File:  [LON-CAPA] / loncom / interface / lonprintout.pm
Revision 1.661: download - view: text, annotated - select for diffs
Mon Jan 15 00:51:42 2018 UTC (6 years, 9 months ago) by raeburn
Branches: MAIN
CVS tags: HEAD
- Bug 6791. Links launched as modal pop-ups for resources listing in
  "Select Resource(s)" to print UI.

    1: # The LearningOnline Network
    2: # Printout
    3: #
    4: # $Id: lonprintout.pm,v 1.661 2018/01/15 00:51:42 raeburn Exp $
    5: #
    6: # Copyright Michigan State University Board of Trustees
    7: #
    8: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
    9: #
   10: # LON-CAPA is free software; you can redistribute it and/or modify
   11: # it under the terms of the GNU General Public License as published by
   12: # the Free Software Foundation; either version 2 of the License, or
   13: # (at your option) any later version.
   14: #
   15: # LON-CAPA is distributed in the hope that it will be useful,
   16: # but WITHOUT ANY WARRANTY; without even the implied warranty of
   17: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   18: # GNU General Public License for more details.
   19: #
   20: # You should have received a copy of the GNU General Public License
   21: # along with LON-CAPA; if not, write to the Free Software
   22: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
   23: #
   24: # /home/httpd/html/adm/gpl.txt
   25: # http://www.lon-capa.org/
   26: #
   27: #
   28: package Apache::lonprintout;
   29: use strict;
   30: use Apache::Constants qw(:common :http);
   31: use Apache::lonxml;
   32: use Apache::lonnet;
   33: use Apache::loncommon;
   34: use Apache::inputtags;
   35: use Apache::grades;
   36: use Apache::edit;
   37: use Apache::File();
   38: use Apache::lonnavmaps;
   39: use Apache::admannotations;
   40: use Apache::lonenc;
   41: use Apache::entities;
   42: use Apache::londefdef;
   43: # use Apache::structurelags;	# for language management.
   44: 
   45: use File::Basename;
   46: 
   47: use HTTP::Response;
   48: use LONCAPA::map();
   49: use Apache::lonlocal;
   50: use Carp;
   51: use LONCAPA;
   52: 
   53: 
   54: my %perm;
   55: my %parmhash;
   56: my $resources_printed;
   57: 
   58: # Global variables that describe errors in ssi calls detected  by ssi_with_retries.
   59: #
   60: 
   61: my $ssi_error;			# True if there was an ssi error.
   62: my $ssi_last_error_resource;	# The resource URI that could not be fetched.
   63: my $ssi_last_error;		# The error text from the server. (e.g. 500 Server timed out).
   64: 
   65: #
   66: #  Our ssi max retry count.
   67: #
   68: 
   69: my $ssi_retry_count = 5;	# Some arbitrary value.
   70: 
   71: 
   72: #  Font size:
   73: 
   74: my $font_size = 'normalsize';	# Default is normalsize...
   75: 
   76: #----------------------------  Helper helpers. -------------------------
   77: 
   78: ## 
   79: # Filter function to determine if a resource is a printable sequence.
   80: #
   81: # @param $res -Resource to check.
   82: #
   83: # @return 1 - printable and a resource
   84: #         0 - either notm a sequence or not printable.
   85: #
   86: sub printable_sequence {
   87:     my $res = shift;
   88: 
   89:     # Non-sequences are not listed:
   90: 
   91:     if (!$res->is_sequence()) {
   92: 	return 0;
   93:     }
   94: 
   95:     # Person with pav or pfo can always print:
   96: 
   97:     if ($perm{'pav'} || $perm{'pfo'}) {
   98: 	return 1;
   99:     }
  100: 
  101:     if ($res->is_sequence()) {
  102: 	my $symb = $res->symb();
  103: 	my $navmap   = $res->{NAV_MAP};
  104: 
  105: 	# Find the first resource in the map:
  106: 
  107: 	my $iterator = $navmap->getIterator($res, undef, undef, 1, 1);
  108: 	my $first    = $iterator->next();
  109: 
  110: 	while (1) {
  111: 	    if ($first == $iterator->END_ITERATOR) { last; }
  112: 	    if (ref($first) && ! $first->is_sequence()) {last; }
  113: 	    $first = $iterator->next();
  114: 	}
  115: 
  116: 
  117: 	# Might be an empty map:
  118: 
  119: 	if (!ref($first)) {
  120: 	    return 0;
  121: 	}
  122: 	my $partsref = $first->parts();
  123: 	my @parts    = @$partsref;
  124: 	my ($open, $close) = $navmap->map_printdates($first, $parts[0]);
  125: 	return &printable($open, $close);
  126:     }
  127:     return 0;
  128: }
  129: 
  130: # BZ5209:
  131: #    Create the states needed to run the helper for incomplete problems from
  132: #    the current folder for selected students.
  133: #    This includes:
  134: #    -  A resource selector limited to problems (incompleteness must be
  135: #       calculated on a student per student basis.
  136: #    -  A student selector.
  137: #    -  Tie in to the FORMAT of the print job.
  138: #
  139: # States:
  140: #   CHOOSE_INCOMPLETE_PEOPLE_SEQ      - Resource selection.
  141: #   CHOOSE_STUDENTS_INCOMPLETE        - Student selection.
  142: #   CHOOSE_STUDENTS_INCOMPLETE_FORMAT - Format selection
  143: # Parameters:
  144: #    helper - the helper which already contains info about the current folder we can
  145: #             purloin.
  146: #    url    - Top url of the sequence
  147: # Return:
  148: #     XML that can be parsed by the helper to drive the state machine.
  149: #
  150: sub create_incomplete_folder_selstud_helper {
  151:     my ($helper, $map)  = @_;
  152: 
  153: 
  154:     my $symbFilter = '$res->shown_symb()';
  155:     my $selFilter   = '$res->is_problem()';
  156: 
  157: 
  158:     my $resource_chooser = &generate_resource_chooser('CHOOSE_INCOMPLETE_PEOPLE_SEQ',
  159: 						      'Select problem(s) to print',
  160: 						      'multichoice="1" toponly="1" addstatus="1" closeallpages="1" modallink="1"',
  161: 						      'RESOURCES',
  162: 						      'CHOOSE_STUDENTS_INCOMPLETE',
  163: 						      $map,
  164: 						      $selFilter,
  165: 						      '',
  166: 						      $symbFilter, 
  167: 						      '');
  168: 
  169:     my $student_chooser = &generate_student_chooser('CHOOSE_STUDENTS_INCOMPLETE',
  170: 						 'student_sort',
  171: 						 'STUDENTS',
  172: 						 'CHOOSE_STUDENTS_INCOMPLETE_FORMAT');
  173: 
  174:     my $format_chooser = &generate_format_selector($helper,
  175: 						'Format of the print job',
  176: 						'CHOOSE_STUDENTS_INCOMPLETE_FORMAT'); # end state.
  177: 
  178:     return $resource_chooser . $student_chooser . $format_chooser;
  179: }  
  180: 
  181: 
  182: # BZ 5209
  183: #     Create the states needed to run the helper for incomplete problems from
  184: #     the current folder for selected students.
  185: #     This includes:
  186: #     - A resource selector limited to problems.  (incompleteness must be calculated
  187: #       on a student per student basis.
  188: #     - A student selector.
  189: #     - Tie in to format for the print job.
  190: # States:
  191: #    INCOMPLETE_PROBLEMS_COURSE_RESOURCES - Resource selector.
  192: #    INCOMPLETE_PROBLEMS_COURSE_STUDENTS  - Student selector.
  193: #    INCOMPLETE_PROBLEMS_COURSE_FORMAT    - Format selection.
  194: #
  195: # Parameters:
  196: #   helper   - Helper we are creating states for.
  197: # Returns:
  198: #   Text that can be parsed by the helper.
  199: # 
  200: 
  201: sub create_incomplete_course_helper {
  202:     my $helper = shift;
  203: 
  204:     my $filter = '$res->is_problem() || $res->contains_problem() || $res->is_sequence() || $res->is_practice())';
  205:     my $symbfilter = '$res->shown_symb()';
  206:     
  207:     my $resource_chooser = &generate_resource_chooser('INCOMPLETE_PROBLEMS_COURSE_RESOURCES',
  208: 						      'Select problem(s) to print',
  209: 						      'multichoice = "1" suppressEmptySequences="0" addstatus="1" closeallpagtes="1" modallink="1"',
  210: 						      'RESOURCES',
  211: 						      'INCOMPLETE_PROBLEMS_COURSE_STUDENTS',
  212: 						      '',
  213: 						      $filter,
  214: 						      '',
  215: 						      $symbfilter,
  216: 						      '');
  217: 
  218:     my $people_chooser  = &generate_student_chooser('INCOMPLETE_PROBLEMS_COURSE_STUDENTS',
  219: 						    'student_sort',
  220: 						    'STUDENTS',
  221: 						    'INCOMPLETE_PROBLEMS_COURSE_FORMAT');
  222: 
  223:     my $format = &generate_format_selector($helper,
  224: 					   'Format of the print job',
  225: 					   'INCOMPLETE_PROBLEMS_COURSE_FORMAT'); # end state.
  226: 
  227:     return $resource_chooser . $people_chooser . $format;
  228: 
  229: 
  230: }
  231: 
  232: # BZ5209 
  233: #   Creates the states needed to run the print helper for a student
  234: #   that wants to print his incomplete problems from the current folder.
  235: # Parameters:
  236: #   $helper - helper we are generating states for.
  237: #   $map    - The map for which the student wants incomplete problems.
  238: # Returns:
  239: #   XML that defines the helper states being created.
  240: #
  241: # States:
  242: #   CHOOSE_INCOMPLETE_SEQ  - Resource selector.
  243: #
  244: sub create_incomplete_folder_helper {
  245:     my ($helper, $map) = @_;
  246: 
  247:     my $filter    = '$res->is_problem()';
  248:     $filter      .= ' && $res->resprintable() ';
  249:     $filter      .= ' && $res->is_incomplete() ';
  250: 
  251:     my $symfilter = '$res->shown_symb()';
  252: 
  253:     my $resource_chooser = &generate_resource_chooser('CHOOSE_INCOMPLETE_SEQ',
  254: 						      'Select problem(s) to print',
  255: 						      'multichoice="1", toponly ="1", addstatus="1", closeallpages="1" modallink="1"',
  256: 						      'RESOURCES',
  257: 						      'PAGESIZE',
  258: 						      $map,
  259: 						      $filter, '', 
  260: 						      $symfilter,
  261: 						      '');
  262: 
  263:     return $resource_chooser;
  264: }
  265: 
  266: 
  267: #  Returns the text neded for a student chooser.
  268: #  that text must still be parsed by the helper xml parser.
  269: # Parameters:
  270: #   this_state   - State name of the chooser.
  271: #   sort_choice  - variable to hold the sorting choice.
  272: #   variable     - Name of variable to hold students.
  273: #   next_state   - State after chooser.
  274: 
  275: 
  276: sub generate_student_chooser {
  277:     my ($this_state, 
  278: 	$sort_choice, 
  279: 	$variable, 
  280: 	$next_state) = @_;
  281:     my $result = <<CHOOSE_STUDENTS;
  282:   <state name="$this_state" title="Select Students and Resources">
  283:       <message><b>Select sorting order of printout</b> </message>
  284: 
  285:     <choices variable="$sort_choice">
  286:       <choice computer='0'>Sort by section then student</choice>
  287:       <choice computer='1'>Sort by students across sections.</choice>
  288:     </choices>
  289: 
  290:       <message><br /><hr /><br /> </message>
  291:       <student multichoice='1' 
  292:                variable="$variable" 
  293:                nextstate="$next_state" 
  294:                coursepersonnel="1" />
  295:   </state>
  296: 
  297: CHOOSE_STUDENTS
  298: 
  299:   return $result;
  300: }
  301: 
  302: # Generate the text needed for a resource chooser given the top level of
  303: # the sequence/page
  304: #
  305: # Parameters:
  306: #     this_state    - State name of the chooser.
  307: #     prompt_text   - Text to use to prompt user.
  308: #     resource_options - Resource tag options e.g.
  309: #                        "multichoice='1', toponly='1', addstatus='1',
  310: #                         modallink='1'" 
  311: #                     that control the selection and appearance of the
  312: #                     resource selector.
  313: #     variable      - Name of the variable to hold the choice
  314: #     next_state    - Name of the next state the helper should transition
  315: #                     to
  316: #     top_url       - Top level URL within which to make the selector.
  317: #                     If empty the top level sequence is shown.
  318: #     filter        - How to filter the resources.
  319: #     value_func    - <valuefunc> function.
  320: #     choice_func   - If not empty generates a <choicefunc> with this function.
  321: #     start_new_option 
  322: #                   - Fragment appended after valuefunc.
  323: #
  324: #
  325: sub generate_resource_chooser {
  326:     my ($this_state,
  327: 	$prompt_text,
  328: 	$resource_options,
  329: 	$variable,
  330: 	$next_state,
  331: 	$top_url,
  332: 	$filter,
  333: 	$choice_func,
  334: 	$value_func,
  335: 	$start_new_option)  = @_;
  336: 
  337:     my $result = <<CHOOSE_RESOURCES;
  338: <state name="$this_state" title="$prompt_text">
  339:     <resource variable="$variable" $resource_options
  340:               closeallpages="1">
  341:       <nextstate>$next_state</nextstate>
  342:       <filterfunc>return $filter;</filterfunc>
  343: CHOOSE_RESOURCES
  344:     if ($choice_func ne '') {
  345: 	$result .= "<choicefunc>return $choice_func;</choicefunc>";
  346:     }
  347:     if ($top_url ne '') {
  348: 	$result .=  "<mapurl>$top_url</mapurl>";
  349:     }
  350:     $result .= <<CHOOSE_RESOURCES;
  351:       <valuefunc>return $value_func;</valuefunc>
  352:       $start_new_option
  353:       </resource>
  354:     </state>
  355: CHOOSE_RESOURCES
  356:     return $result;
  357: }
  358: #
  359: #   Generate the helper XML for a code choice helper dialog:
  360: #
  361: # Paramters:
  362: #   $helper       - Reference to the helper.
  363: #   $state        - Name of the state for the chooser.
  364: #   $next_state   - Name fo the state to follow the chooser.
  365: #   $bubble_types - Populates the bubble sheet type dropt down.
  366: #   $code_selections - Provides set of code choices that have been used
  367: #   $saved_codes  - Provides the list of saved codes.
  368: #
  369: # Returns;
  370: #   The Xml of the code chooser.
  371: #
  372: sub generate_code_selector {
  373:     my ($helper,
  374: 	$state,
  375: 	$next_state,
  376: 	$bubble_types,
  377: 	$code_selections,
  378: 	$saved_codes) = @_;	# Unpack the parameters.
  379: 
  380:     my $result = <<CHOOSE_ANON1;
  381:   <state name="$state" title="Specify CODEd Assignments">
  382:     <nextstate>$next_state</nextstate>
  383:     <message><h4>Fill out one of the forms below</h4></message>
  384:     <message><br /><hr /> <br /></message>
  385:     <message><h3>Generate new CODEd Assignments</h3></message>
  386:     <message><table><tr><td><b>Number of CODEd assignments to print:</b></td><td></message>
  387:     <string variable="NUMBER_TO_PRINT_TOTAL" maxlength="5" size="5"  noproceed="1">
  388:        <validator>
  389: 	if (((\$helper->{'VARS'}{'NUMBER_TO_PRINT_TOTAL'}+0) < 1) &&
  390: 	    !\$helper->{'VARS'}{'REUSE_OLD_CODES'}                &&
  391:             !\$helper->{'VARS'}{'SINGLE_CODE'}                    &&
  392: 	    !\$helper->{'VARS'}{'CODE_SELECTED_FROM_LIST'} ) {
  393: 
  394: 	    return "You need to specify the number of assignments to print";
  395: 	}
  396:         if (((\$helper->{'VARS'}{'NUMBER_TO_PRINT_TOTAL'}+0) >= 1)  &&
  397:              (\$helper->{'VARS'}{'SINGLE_CODE'} ne '') ) {
  398:             return 'Specifying number of codes to print and a specific code is not compatible';
  399:         }
  400: 	return undef;
  401:        </validator>
  402:     </string>
  403:     <message></td></tr><tr><td></message>
  404:     <message><b>Names to save the CODEs under for later:</b></message>
  405:     <message></td><td></message>
  406:     <string variable="ANON_CODE_STORAGE_NAME" maxlength="50" size="20" />
  407:     <message></td></tr><tr><td></message>
  408:     <message><b>Bubblesheet type:</b></message>
  409:     <message></td><td></message>
  410:     <dropdown variable="CODE_OPTION" multichoice="0" allowempty="0">
  411:     $bubble_types
  412:     </dropdown>
  413:     <message></td></tr><tr><td colspan="2"></td></tr><tr><td></message>
  414:     <message></td></tr><tr><td></table></message>
  415:     <message><br /><hr /><h3>Print a Specific CODE </h3><br /><table></message>
  416:     <message><tr><td><b>Enter a CODE to print:</b></td><td></message>
  417:     <string variable="SINGLE_CODE" size="10">
  418:         <validator>
  419: 	   if(!\$helper->{'VARS'}{'NUMBER_TO_PRINT_TOTAL'}           &&
  420: 	      !\$helper->{'VARS'}{'REUSE_OLD_CODES'}                 &&
  421: 	      !\$helper->{'VARS'}{'CODE_SELECTED_FROM_LIST'}) {
  422: 	      return &Apache::lonprintout::is_code_valid(\$helper->{'VARS'}{'SINGLE_CODE'},
  423: 						      \$helper->{'VARS'}{'CODE_OPTION'});
  424: 	  } elsif (\$helper->{'VARS'}{'SINGLE_CODE'} ne ''){
  425: 	      return 'Specifying a code name is incompatible with specifying number of codes.';
  426: 	   } else {
  427: 	       return undef;	# Other forces control us.
  428: 	   }
  429:         </validator>
  430:     </string>
  431:     <message></td></tr><tr><td></message>
  432:         $code_selections
  433:     <message></td></tr></table></message>
  434:     <message><hr /><h3>Reprint a Set of Saved CODEs</h3><table><tr><td></message>
  435:     <message><b>Select saved CODEs:</b></message>
  436:     <message></td><td></message>
  437:     <dropdown variable="REUSE_OLD_CODES">
  438:         $saved_codes
  439:     </dropdown>
  440:     <message></td></tr></table></message>
  441:   </state>
  442: CHOOSE_ANON1
  443: 
  444:    return $result;
  445: }
  446: 
  447: #  Returns the XML for choosing how assignments are to be formatted 
  448: #  that text must still be parsed by the helper xml parser.
  449: # Parameters: 3 (required)
  450: 
  451: #   helper       - The helper; $helper->{'VARS'}->{'PRINT_TYPE'} used
  452: #                  to check if splitting PDFs by section can be offered.
  453: #   title        - Title for the current state. 
  454: #   this_state   - State name of the chooser.
  455: 
  456: sub generate_format_selector {
  457:     my ($helper,$title,$this_state) = @_;
  458:     my $secpdfoption;
  459:     unless (($helper->{'VARS'}->{'PRINT_TYPE'} eq 'problems_for_anon')     ||
  460:             ($helper->{'VARS'}->{'PRINT_TYPE'} eq 'problems_for_anon_page') ||
  461:             ($helper->{'VARS'}->{'PRINT_TYPE'} eq 'resources_for_anon')  ) {
  462:         $secpdfoption =  '<choice computer="sections">Each PDF contains exactly one section</choice>';
  463:     }
  464:     return <<RESOURCE_SELECTOR;
  465:     <state name="$this_state" title="$title">
  466:     <message><br /><big><i><b>How should the results be printed?</b></i></big><br /></message>
  467:     <choices variable="EMPTY_PAGES">
  468:       <choice computer='0'>Start each student\'s assignment on a new page/column (add a pagefeed after each assignment)</choice>
  469:       <choice computer='1'>Add one empty page/column after each student\'s assignment</choice>
  470:       <choice computer='2'>Add two empty pages/column after each student\'s assignment</choice>
  471:       <choice computer='3'>Add three empty pages/column after each student\'s assignment</choice>
  472:     </choices>
  473:     <nextstate>PAGESIZE</nextstate>
  474:     <message><hr width='33%' /><b>How do you want assignments split into PDF files? </b></message>
  475:     <choices variable="SPLIT_PDFS">
  476:        <choice computer="all">All assignments in a single PDF file</choice>
  477:        $secpdfoption
  478:        <choice computer="oneper">Each PDF contains exactly one assignment</choice>
  479:        <choice computer="usenumber" relatedvalue="NUMBER_TO_PRINT">
  480:             Specify the number of assignments per PDF:</choice>
  481:     </choices>
  482:     </state>
  483: RESOURCE_SELECTOR
  484: }
  485: 
  486: #-----------------------------------------------------------------------
  487: 
  488: # Computes an open and close date from a list of open/close dates for a resource's
  489: # parts.
  490: #
  491: # @param \@opens - reference to an array of open dates.
  492: # @param \@closes - reference to an array of close dates.
  493: #
  494: # @return ($open, $close) 
  495: #
  496: # @note If open/close dates are not defined they will be returned as undef
  497: # @note It is possible for there to be no overlap in which case -1,-1 
  498: #       will be returned.
  499: # @note The algorithm used is to take the latest open date and the earliest end date.
  500: #
  501: sub compute_open_window {
  502:     my ($opensref, $closesref) = @_;
  503: 
  504:     my @opens   = @$opensref;
  505:     my @closes  = @$closesref;
  506: 
  507:     # latest open date:
  508:     my $latest_open;
  509: 
  510:     foreach my $open (@opens) {
  511: 	if (!defined($latest_open) || ($open > $latest_open)) {
  512: 	    $latest_open = $open;
  513: 	}
  514:     }
  515:     # Earliest close:
  516: 
  517:     my $earliest_close;
  518:     foreach my $close (@closes) {
  519: 	if (!defined($earliest_close) || ($close < $earliest_close)) {
  520: 	    $earliest_close = $close;
  521: 	}
  522:     }
  523: 
  524:     # If no overlap...both are -1 as promised.
  525: 
  526:     if (($earliest_close ne '') && ($latest_open ne '')
  527: 	 && ($earliest_close < $latest_open)) {
  528: 	$latest_open  = -1;
  529: 	$earliest_close = -1;
  530:     }
  531:     
  532:     return ($latest_open, $earliest_close);
  533:   
  534: }
  535: 
  536: ##
  537: #  Determines if 'now' is within the set of printable dates.
  538: #
  539: #  @param $open_date - Starting date/timestamp.
  540: #  @param $close_date - Ending date/timestamp.
  541: #
  542: #  @return 0 - Not open.
  543: #  @return 1 - open.
  544: #
  545: sub printable {
  546:     my ($open_date, $close_date) = @_;
  547: 
  548: 
  549:     my $now = time();
  550: 
  551:     # Have to do a bit of fancy footwork around undefined open/close dates:
  552: 
  553:     if ($open_date && ($open_date > $now)) {
  554: 	return 0;
  555:     }
  556: 
  557:     if ($close_date && ($close_date < $now)) {
  558: 	return 0;
  559:     }
  560:     
  561:     return 1;
  562: 
  563: }
  564: 
  565: ##
  566: # Returns the innermost print start/print end dates for a resource.
  567: # This is done by looking at the start/end dates for its parts and choosing
  568: # the intersection of those dates.
  569: # 
  570: # @param res - lonnvamaps::resource object that represents the resource.
  571: #
  572: # @return (opendate, closedate)
  573: #
  574: # @note If open/close dates are not defined they will be returned as undef
  575: # @note It is possible for there to be no overlap in which case -1,-1 
  576: #       will be returned.
  577: # @note The algorithm used is to take the latest open date and the earliest end date.
  578: #       For consistency with &printable() in lonnavmaps.pm determination of start
  579: #       date for printing checks printstartdate param first, then, if not set,
  580: #       opendate param, then, if not set, contentopen param.
  581: 
  582: sub get_print_dates {
  583:     my $res = shift;
  584:     my $partsref = $res->parts();
  585:     my @parts;
  586:     if (ref($partsref) eq 'ARRAY') {
  587:         @parts   = @{$partsref};
  588:     }
  589:     my $open_date;
  590:     my $close_date;
  591:     my @open_dates;
  592:     my @close_dates;
  593: 
  594: 
  595:     if (@parts) {
  596: 	foreach my $part (@parts) {
  597: 	    my $partopen  = $res->parmval('printstartdate', $part);
  598: 	    my $partclose = $res->parmval('printenddate',  $part);
  599:             if (!$partopen) {
  600:                 $partopen = $res->parmval('opendate',$part);
  601:             }
  602:             if (!$partopen) {
  603:                 $partopen = $res->parmval('contentopen',$part);
  604:             }
  605:             if ($partopen) {
  606:                 push(@open_dates, $partopen);
  607:             }
  608:             if ($partclose) {
  609:                 push(@close_dates, $partclose);
  610:             }
  611: 	    push(@open_dates, $partopen);
  612: 	    push(@close_dates, $partclose);
  613: 	}
  614:     }
  615: 
  616:     ($open_date, $close_date)  = &compute_open_window(\@open_dates, \@close_dates);
  617: 
  618:     return ($open_date, $close_date);
  619: }
  620: 
  621: ##
  622: # Get the dates for which a course says a resource can be printed.  This is like
  623: # get_print_dates but namvaps::course_print_dates are gotten...and not converted
  624: # to times either.
  625: #
  626: # @param $res - Reference to a resource has from lonnvampas::resource.
  627: #
  628: # @return (opendate, closedate)
  629: #
  630: sub course_print_dates {
  631:     my $res = shift;
  632:     my $partsref = $res->parts();
  633:     my @parts    = @$partsref;
  634:     my $open_date;
  635:     my $close_date;
  636:     my @open_dates;
  637:     my @close_dates;
  638:     my $navmap = $res->{NAV_MAP}; # Slightly OO dirty.
  639: 
  640:     # Don't bother looping over undefined or empty parts arraY;
  641: 
  642:     if (@parts) {
  643: 	foreach my $part (@parts) {
  644: 	    my ($partopen, $partclose) = $navmap->course_printdates($res, $part);
  645: 	    push(@open_dates, $partopen);
  646: 	    push(@close_dates, $partclose);
  647: 	}
  648: 	($open_date, $close_date) = &compute_open_window(\@open_dates, \@close_dates);
  649:     }
  650:     return ($open_date, $close_date);
  651: }
  652: ##
  653: # Same as above but for the enclosing map:
  654: #
  655: sub map_print_dates {
  656:     my $res = shift;
  657:     my $partsref = $res->parts();
  658:     my @parts    = @$partsref;
  659:     my $open_date;
  660:     my $close_date;
  661:     my @open_dates;
  662:     my @close_dates;
  663:     my $navmap = $res->{NAV_MAP}; # slightly OO dirty.
  664: 
  665: 
  666:     # Don't bother looping over undefined or empty parts arraY;
  667: 
  668:     if (@parts) {
  669: 	foreach my $part (@parts) {
  670: 	    my ($partopen, $partclose) = $navmap->map_printdates($res, $part);
  671: 	    push(@open_dates, $partopen);
  672: 	    push(@close_dates, $partclose);
  673: 	}
  674: 	($open_date, $close_date) = &compute_open_window(\@open_dates, \@close_dates);
  675:     }
  676:     return ($open_date, $close_date);
  677: }
  678: 
  679: # Determine if a resource is incomplete given the map:
  680: # Parameters:
  681: #   $username - Name of user for whom we are checking.
  682: #   $domain   - Domain of user we are checking.
  683: #   $map - map name.
  684: # Returns:
  685: #     0 - map is not incomplete.
  686: #     1 - map is incomplete.
  687: #
  688: sub incomplete {
  689:     my ($username, $domain, $map) = @_;
  690: 
  691: 
  692:     my $navmap = Apache::lonnavmaps::navmap->new($username, $domain);
  693:     
  694: 
  695:     if (defined($navmap)) {
  696: 	my $res = $navmap->getResourceByUrl($map);
  697: 	my $result = $res->is_incomplete();
  698: 	return $result;
  699:     } else {
  700: 	return 1;
  701:     }
  702: }
  703: #
  704: #  When printing for students, the resources and order of the
  705: #  resources may need to be altered if there are folders with
  706: #  random selectiopn or random ordering (or both) enabled.
  707: #  This sub computes the set of resources to print for a student
  708: #  modified both by random ordering and selection and filtered
  709: #  to only those that are in the original set selected to be printed.
  710: #
  711: # Parameters:
  712: #   $map - The URL of the folder being printed.
  713: #          Used to determine which startResource and finishResource
  714: #          to use when using the navmap's getIterator method.
  715: #   $seq   - The original set of resources to print.
  716: #            (really an array of resource names (array of symb's).
  717: #   $who   - Student/domain for whome the sequence will be generated.
  718: #   $code  - CODE being printed when printing Problems/Resources
  719: #            from folder for CODEd assignments
  720: #   $nohidemap - If true, parameter in map for hiddenresource will be
  721: #                ignored.  The user calling the routine should have
  722: #                both the pav and vgr privileges if this is set to true).
  723: #
  724: # Implicit inputs:
  725: #   $
  726: # Returns:
  727: #   reference to an array of resources that can be passed to
  728: #   print_resources.
  729: # 
  730: sub master_seq_to_person_seq {
  731:     my ($map, $seq, $who, $code, $nohidemap) = @_;
  732: 
  733: 
  734:     my ($username, $userdomain, $usersection) = split(/:/, $who);
  735: 
  736:     # Toss the sequence up into a hash so that we have O(1) lookup time.
  737:     # on the items that come out of the user's list of resources.
  738:     #
  739: 
  740:     my %seq_hash = map {$_  => 1} @$seq;
  741:     my @output_seq;
  742: 
  743:     my $unhidden;
  744:     if ($nohidemap) {
  745:         $unhidden = &Apache::lonnet::clutter($map);
  746:     }
  747:     
  748:     my $navmap           = Apache::lonnavmaps::navmap->new($username, $userdomain,
  749:                                                            $code, $unhidden);
  750:     my ($start,$finish);
  751: 
  752:     if ($map) {
  753:         my $mapres = $navmap->getResourceByUrl($map);
  754:         if ($mapres->is_map()) {
  755:             $start = $mapres->map_start();
  756:             $finish = $mapres->map_finish();
  757:         }
  758:     }
  759:     unless ($start && $finish) {
  760:         $start = $navmap->firstResource();
  761:         $finish = $navmap->finishResource();
  762:     }
  763: 
  764:     my $iterator         = $navmap->getIterator($start,$finish,{},1);
  765: 
  766:     #  Iterate on the resource..select the items that are randomly selected
  767:     #  and that are in the seq_has.  Presumably the iterator will take care
  768:     # of the random ordering part of the deal.
  769:     #
  770:     my $curres;
  771:     while ($curres = $iterator->next()) {
  772: 	#
  773: 	#  Only process resources..that are not removed by randomout...
  774: 	#  and are selected for printint as well.
  775: 	#
  776:         if (ref($curres) && ! $curres->randomout()) {
  777:             my $currsymb = $curres->symb();
  778:             if (exists($seq_hash{$currsymb})) {
  779:                 push(@output_seq, $currsymb);
  780: 	    }
  781: 	}
  782:     }
  783: 
  784:     return \@output_seq;		# for now.
  785:     
  786: }
  787: 
  788: 
  789: # Fetch the contents of a resource, uninterpreted.
  790: # This is used here to fetch a latex file to be included
  791: # verbatim into the printout<
  792: # NOTE: Ask Guy if there is a lonnet function similar to this?
  793: #
  794: # Parameters:
  795: #   URL of the file
  796: #
  797: sub fetch_raw_resource {
  798:     my ($url) = @_;
  799: 
  800:     my $filename  = &Apache::lonnet::filelocation("", $url);
  801:     my $contents  = &Apache::lonnet::getfile($filename);
  802: 
  803:     if ($contents == -1) {
  804: 	return "File open failed for $filename";      # This will bomb the print.
  805:     }
  806:     return $contents;
  807: 
  808:     
  809: }
  810: 
  811: #  Fetch the annotations associated with a URL and 
  812: #  put a centered 'annotations:' title.
  813: #  This is all suppressed if the annotations are empty.
  814: #
  815: sub annotate {
  816:     my ($symb) = @_;
  817: 
  818:     my $annotation_text = &Apache::loncommon::get_annotation($symb, 1);
  819: 
  820: 
  821:     my $result = "";
  822: 
  823:     if (length($annotation_text) > 0) {
  824: 	$result .= '\\hspace*{\\fill} \\\\[\\baselineskip] \textbf{Annotations:} \\\\ ';
  825: 	$result .= "\n";
  826: 	$result .= &Apache::lonxml::latex_special_symbols($annotation_text,"");	# Escape latex.
  827: 	$result .= "\n\n";
  828:     }
  829:     return $result;
  830: }
  831: 
  832: #
  833: #   Set a global document font size:
  834: #   This is done by replacing \begin{document}
  835: #   with \begin{document}{\some-font-directive
  836: #   and \end{document} with
  837: #   }\end{document
  838: #
  839: sub set_font_size {
  840: 
  841:     my ($text) = @_;
  842: 
  843:     # There appear to be cases where the font directive is empty.. in which
  844:     # case the first substituion would  insert a spurious \ oh happy day.
  845:     # as this has been the cause of much mystery and hair pulling _sigh_
  846: 
  847:     if ($font_size ne '') {
  848: 
  849: 	$text =~ s/\\begin\{document}/\\begin{document}{\\$font_size/;
  850:     }
  851:     $text =~ s/\\end\{document}/}\\end{document}/;
  852:     return $text;
  853: 
  854: 
  855: }
  856: 
  857: # include_pdf - PDF files are included into the 
  858: # output as follows:
  859: #  - The PDF, if necessary, is replicated.
  860: #  - The PDF is added to the list of files to convert to postscript (along with the images).
  861: #  - The LaTeX is added to include the final converted postscript in the file as an included
  862: #    job.  The assumption is that the includedpsheader.ps header will be included.
  863: #
  864: # Parameters:
  865: #   pdf_uri   - URI of the PDF file to include.
  866: #   
  867: # Returns:
  868: #  The LaTeX to include.
  869: #
  870: # Assumptions:
  871: #    The uri is actually a PDF file
  872: #    The postscript will have the includepsheader.ps included.
  873: #
  874: #
  875: sub include_pdf {
  876:     my ($pdf_uri) = @_;
  877: 
  878:     # Where is the file? If not local we'll need to repcopy it:'
  879: 
  880:     my $file = &Apache::lonnet::filelocation('', $pdf_uri);
  881:     if (! -e $file) {
  882: 	&Apache::lonnet::repcopy($file);
  883: 	$file = &Apache::lonnet::filelocation('',$pdf_uri);
  884:     }
  885: 
  886:     #  The file isn ow replicated locally.. or it did not exist in the first place
  887:     # (unlikely).  If it did exist, add the pdf to the set of files/images that
  888:     # need tob e converted for this print job:
  889: 
  890:     my $londocroot = $Apache::lonnet::perlvar{'lonDocRoot'};
  891:     $file =~ s{(.*)/res/}{$londocroot/res/};
  892: 
  893:     open(FILE,">>","$Apache::lonnet::perlvar{'lonPrtDir'}/$env{'user.name'}_$env{'user.domain'}_printout.dat");
  894:     print FILE ("$file\n");
  895:     close (FILE);
  896: 
  897:     # Construct the special to put out.  To do this we need to get the
  898:     # resulting filename after conversion.  The file will have the same name
  899:     # but will be in the user's spool directory with converted images.
  900: 
  901:     my $dirname = "/home/httpd/prtspool/$env{'user.name'}/";
  902:     my ( $base, $path,  $ext) = &fileparse($file, '.pdf');
  903: #    my $destname = $dirname.'/'.$base.'.eps'; # Not really an eps but easier in printout.pl
  904:     $base =~ s/ /\_/g;
  905: 
  906: 
  907:     my $output = &print_latex_header();
  908:     $output    .= '\special{ps: _begin_job_ ('
  909: 	.$base.'.pdf.eps'.
  910: 	')run _end_job_}';
  911: 
  912:     return $output;
  913: 
  914: 
  915: }
  916: ##
  917: #  Collect the various \select_language{language_name}
  918: #  latex tags to build a \usepackage[lang-list]{babel} which will
  919: #  appear just prior to the \begin{document} at the front of the concatenated
  920: #  set of resources:
  921: # @param doc - The string of latex to search/replace.
  922: # @return string
  923: # @retval - the modified document stringt.
  924: #
  925: sub collect_languages {
  926:     my $doc = shift;
  927:     my %languages;
  928:     while ($doc =~ /\\selectlanguage\{(\w+)}/mg) {
  929: 	$languages{$1} = 1;	# allows us to request each language exactly once.
  930:     }
  931:     my @lang_list = (keys(%languages)); # List of unique languages
  932:     if (scalar @lang_list) {
  933: 	my $babel_header = '\usepackage[' . join(',', @lang_list) .']{babel}'. "\n";
  934: 	$doc =~ s/\\begin\{document}/$babel_header\\begin{document}/;
  935:     }
  936:     return $doc;
  937: }
  938: #-------------------------------------------------------------------
  939: 
  940: #
  941: #   ssi_with_retries- Does the server side include of a resource.
  942: #                      if the ssi call returns an error we'll retry it up to
  943: #                      the number of times requested by the caller.
  944: #                      If we still have a proble, no text is appended to the
  945: #                      output and we set some global variables.
  946: #                      to indicate to the caller an SSI error occurred.  
  947: #                      All of this is supposed to deal with the issues described
  948: #                      in LonCAPA BZ 5631 see:
  949: #                      http://bugs.lon-capa.org/show_bug.cgi?id=5631
  950: #                      by informing the user that this happened.
  951: #
  952: # Parameters:
  953: #   resource   - The resource to include.  This is passed directly, without
  954: #                interpretation to lonnet::ssi.
  955: #   form       - The form hash parameters that guide the interpretation of the resource
  956: #                
  957: #   retries    - Number of retries allowed before giving up completely.
  958: # Returns:
  959: #   On success, returns the rendered resource identified by the resource parameter.
  960: # Side Effects:
  961: #   The following global variables can be set:
  962: #    ssi_error                - If an unrecoverable error occurred this becomes true.
  963: #                               It is up to the caller to initialize this to false
  964: #                               if desired.
  965: #    ssi_last_error_resource  - If an unrecoverable error occurred, this is the value
  966: #                               of the resource that could not be rendered by the ssi
  967: #                               call.
  968: #    ssi_last_error           - The error string fetched from the ssi response
  969: #                               in the event of an error.
  970: #
  971: sub ssi_with_retries {
  972:     my ($resource, $retries, %form) = @_;
  973: 
  974:     my $target = $form{'grade_target'};
  975:     my $aom    = $form{'answer_output_mode'};
  976: 
  977: 
  978: 
  979:     my ($content, $response) = &Apache::loncommon::ssi_with_retries($resource, $retries, %form);
  980:     if (!$response->is_success) {
  981: 	$ssi_error               = 1;
  982: 	$ssi_last_error_resource = $resource;
  983: 	$ssi_last_error          = $response->code . " " . $response->message;
  984:         $content='\section*{!!! An error occurred !!!}';	
  985:     }
  986: 
  987:     return $content;
  988: 
  989: }
  990: 
  991: sub get_student_view_with_retries {
  992:     my ($curresline,$retries,$username,$userdomain,$courseid,$target,$moreenv)=@_;
  993: 
  994:     my ($content, $response) = &Apache::loncommon::get_student_view_with_retries($curresline,$retries,$username,$userdomain,$courseid,$target,$moreenv);
  995:     if (!$response->is_success) {
  996:         $ssi_error               = 1;
  997:         $ssi_last_error_resource = $curresline.' for user '.$username.':'.$userdomain;
  998:         $ssi_last_error          = $response->code . " " . $response->message;
  999:         $content='\section*{!!! An error occurred !!!}';
 1000:     }
 1001:     return $content;
 1002: 
 1003: }
 1004: 
 1005: #
 1006: #   printf_style_subst  item format_string repl
 1007: #  
 1008: # Does printf style substitution for a format string that
 1009: # can have %[n]item in it.. wherever, %[n]item occurs,
 1010: # rep is substituted in format_string.  Note that
 1011: # [n] is an optional integer length.  If provided,
 1012: # repl is truncated to at most [n] characters prior to 
 1013: # substitution.
 1014: #
 1015: sub printf_style_subst {
 1016:     my ($item, $format_string, $repl) = @_;
 1017:     my $result = "";
 1018:     while ($format_string =~ /(%)(\d*)\Q$item\E/g ) {
 1019: 	my $fmt = $1;
 1020: 	my $size = $2;
 1021: 	my $subst = $repl;
 1022: 	if ($size ne "") {
 1023: 	    $subst = substr($subst, 0, $size);
 1024: 	    
 1025: 	    #  Here's a nice edge case.. supose the end of the
 1026: 	    #  substring is a \.  In that case may have  just
 1027: 	    #  chopped off a TeX escape... in that case, we append
 1028: 	    #   " " for the trailing character, and let the field 
 1029: 	    #  spill over a bit (sigh).
 1030: 	    #  We don't just chop off the last character in order to deal
 1031: 	    #  with one last pathology, and that would be if substr had
 1032: 	    #  trimmed us to e.g. \\\  
 1033: 
 1034: 
 1035: 	    if ($subst =~ /\\$/) {
 1036: 		$subst .= " ";
 1037: 	    }
 1038: 	}
 1039: 	my $item_pos = pos($format_string);
 1040: 	$result .= substr($format_string, 0, $item_pos - length($size) -2) . $subst;
 1041:         $format_string = substr($format_string, pos($format_string));
 1042:     }
 1043: 
 1044:     # Put the residual format string into the result:
 1045: 
 1046:     $result .= $format_string;
 1047: 
 1048:     return $result;
 1049: }
 1050: 
 1051: 
 1052: # Format a header according to a format.  
 1053: # 
 1054: 
 1055: # Substitutions:
 1056: #     %a    - Assignment name.
 1057: #     %c    - Course name.
 1058: #     %n    - Student name.
 1059: #     %s    - The section if it is supplied.
 1060: #
 1061: sub format_page_header {
 1062:     my ($width, $format, $assignment, $course, $student, $section) = @_;
 1063: 
 1064: 
 1065: 
 1066:     $width = &recalcto_mm($width); # Get width in mm.
 1067:     my $chars_per_line = int($width/1.6);   # Character/textline.
 1068: 
 1069:     #  Default format?
 1070: 
 1071:     if ($format eq '') {
 1072: 	# For the default format, we may need to truncate
 1073: 	# elements..  To do this we need to get the page width.
 1074: 	# we assume that each character is about 2mm in width.
 1075: 	# (correct for the header text size??).  We ignore
 1076: 	# any formatting (e.g. boldfacing in this).
 1077: 	# 
 1078: 	# - Allow the student/course to be one line.
 1079: 	#   but only truncate the course.
 1080: 	# - Allow the assignment to be 2 lines (wrapped).
 1081: 	#
 1082: 
 1083: 	
 1084: 
 1085: 	my $name_length    = int($chars_per_line *3 /4);
 1086: 	my $sec_length     = int($chars_per_line / 5);
 1087: 
 1088: 	$format  = "%$name_length".'n';
 1089: 
 1090: 	if ($section) {
 1091: 	    $format .=  ' - Sec: '."%$sec_length".'s';
 1092: 	}
 1093: 
 1094: 	$format .= '\\\\%c \\\\ %a';
 1095:         
 1096: 
 1097:     }
 1098:     # An open question is how to handle long user formatted page headers...
 1099:     # A possible future is to support e.g. %na so that the user can control
 1100:     # the truncation of the elements that can appear in the header.
 1101:     #
 1102:     $format =  &printf_style_subst("a", $format, $assignment);
 1103:     $format =  &printf_style_subst("c", $format, $course);
 1104:     $format =  &printf_style_subst("n", $format, $student);
 1105:     $format =  &printf_style_subst("s", $format, $section);
 1106:     
 1107:     
 1108:     # If the user put %'s in the format string, they  must be escaped
 1109:     # to \% else LaTeX will think they are comments and terminate
 1110:     # the line.. which is bad!!!
 1111:     
 1112:     # If the user has role author, $course and $assignment are empty so
 1113:     # there is '\\ \\ ' in the page header. That's cause a error in LaTeX
 1114:     if($format =~ /\\\\\s\\\\\s/) {
 1115:         #TODO find sensible caption for page header
 1116:         my $testPrintout = '\\\\'.&mt('Authoring Space').' \\\\'.&mt('Test-Printout ');
 1117:         $format =~ s/\\\\\s\\\\\s/$testPrintout/;
 1118:     }
 1119:     #
 1120:     #  We're going to trust LaTeX to break lines appropriately, but
 1121:     #  we'll truncate anything that's more than 3 lines worth of
 1122:     # text.  This is also assuming (which will probably end badly)
 1123:     # nobody's going to embed LaTeX control sequences in the title
 1124:     # header or rather that those control sequences won't get broken
 1125:     # by the stuff below.
 1126:     #
 1127:     my $total_length = 3*$chars_per_line;
 1128:     if (length($format) > $total_length) {
 1129: 	$format = substr($format, 0, $total_length);
 1130:     }
 1131: 
 1132: 
 1133:     return $format;
 1134:     
 1135: }
 1136: 
 1137: #
 1138: #   Convert a numeric code to letters
 1139: #
 1140: sub num_to_letters {
 1141:     my ($num) = @_;
 1142:     my @nums= split('',$num);
 1143:     my @num_to_let=('A'..'Z');
 1144:     my $word;
 1145:     foreach my $digit (@nums) { $word.=$num_to_let[$digit]; }
 1146:     return $word;
 1147: }
 1148: #   Convert a letter code to numeric.
 1149: #
 1150: sub letters_to_num {
 1151:     my ($letters) = @_;
 1152:     my @letters = split('', uc($letters));
 1153:    my %substitution;
 1154:     my $digit = 0;
 1155:     foreach my $letter ('A'..'J') {
 1156: 	$substitution{$letter} = $digit;
 1157: 	$digit++;
 1158:     }
 1159:     #  The substitution is done as below to preserve leading
 1160:     #  zeroes which are needed to keep the code size exact
 1161:     #
 1162:     my $result ="";
 1163:     foreach my $letter (@letters) {
 1164: 	$result.=$substitution{$letter};
 1165:     }
 1166:     return $result;
 1167: }
 1168: 
 1169: #  Determine if a code is a valid numeric code.  Valid
 1170: #  numeric codes must be comprised entirely of digits and
 1171: #  have a correct number of digits.
 1172: #
 1173: #  Parameters:
 1174: #     value      - proposed code value.
 1175: #     num_digits - Number of digits required.
 1176: #
 1177: sub is_valid_numeric_code {
 1178:     my ($value, $num_digits) = @_;
 1179:     #   Remove leading/trailing whitespace;
 1180:     $value =~ s/^\s*//g;
 1181:     $value =~ s/\s*$//g;
 1182:     
 1183:     #  All digits?
 1184:     if ($value !~ /^[0-9]+$/) {
 1185: 	return "Numeric code $value has invalid characters - must only be digits";
 1186:     }
 1187:     if (length($value) != $num_digits) {
 1188: 	return "Numeric code $value incorrect number of digits (correct = $num_digits)";
 1189:     }
 1190:     return undef;
 1191: }
 1192: #   Determines if a code is a valid alhpa code.  Alpha codes
 1193: #   are ciphers that map  [A-J,a-j] -> 0..9 0..9.
 1194: #   They also have a correct digit count.
 1195: # Parameters:
 1196: #     value          - Proposed code value.
 1197: #     num_letters    - correct number of letters.
 1198: # Note:
 1199: #    leading and trailing whitespace are ignored.
 1200: #
 1201: sub is_valid_alpha_code {
 1202:     my ($value, $num_letters) = @_;
 1203:     
 1204:      # strip leading and trailing spaces.
 1205: 
 1206:     $value =~ s/^\s*//g;
 1207:     $value =~ s/\s*$//g;
 1208: 
 1209:     #  All alphas in the right range?
 1210:     if ($value !~ /^[A-J,a-j]+$/) {
 1211: 	return "Invalid letter code $value must only contain A-J";
 1212:     }
 1213:     if (length($value) != $num_letters) {
 1214: 	return "Letter code $value has incorrect number of letters (correct = $num_letters)";
 1215:     }
 1216:     return undef;
 1217: }
 1218: 
 1219: #   Determine if a code entered by the user in a helper is valid.
 1220: #   valid depends on the code type and the type of code selected.
 1221: #   The type of code selected can either be numeric or 
 1222: #   Alphabetic.  If alphabetic, the code, in fact is a simple
 1223: #   substitution cipher for the actual numeric code: 0->A, 1->B ...
 1224: #   We'll be nice and be case insensitive for alpha codes.
 1225: # Parameters:
 1226: #    code_value    - the value of the code the user typed in.
 1227: #    code_option   - The code type selected from the set in the scantron format
 1228: #                    table.
 1229: # Returns:
 1230: #    undef         - The code is valid.
 1231: #    other         - An error message indicating what's wrong.
 1232: #
 1233: sub is_code_valid {
 1234:     my ($code_value, $code_option) = @_;
 1235:     my ($code_type, $code_length) = ('letter', 6);	# defaults.
 1236:     my @lines = &Apache::grades::get_scantronformat_file();
 1237:     foreach my $line (@lines) {
 1238: 	my ($name, $type, $length) = (split(/:/, $line))[0,2,4];
 1239: 	if($name eq $code_option) {
 1240: 	    $code_length = $length;
 1241: 	    if($type eq 'number') {
 1242: 		$code_type = 'number';
 1243: 	    }
 1244: 	}
 1245:     }
 1246:     my $valid;
 1247:     if ($code_type eq 'number') {
 1248: 	return &is_valid_numeric_code($code_value, $code_length);
 1249:     } else {
 1250: 	return &is_valid_alpha_code($code_value, $code_length);
 1251:     }
 1252: 
 1253: }
 1254: #
 1255: # Compare two students by section (Used to sort by section).
 1256: #
 1257: #  Implicit inputs, 
 1258: #    $a - The first one
 1259: #    $b - The second one.
 1260: #
 1261: #  Returns:
 1262: #     a-section cmp b-section
 1263: #
 1264: sub compare_sections {
 1265:     my ($u1, $d1, $s1, $n1, $stat1) = split(/:/, $a);
 1266:     my ($u2, $d2, $s2, $n2, $stat2) = split(/:/, $b);
 1267: 
 1268:     return $s1 cmp $s2;
 1269: }
 1270: 
 1271: #   Compare two students by name.  The students are in the form
 1272: #   returned by the helper:
 1273: #      user:domain:section:last,   first:status
 1274: #   This is a helper function for the perl sort built-in  therefore:
 1275: # Implicit Inputs:
 1276: #    $a     - The first element to compare (global)
 1277: #    $b     - The second element to compare (global)
 1278: # Returns:
 1279: #   -1   - $a < $b
 1280: #    0   - $a == $b
 1281: #   +1   - $a > $b
 1282: #   Note that the initial comparison is done on the last names with the
 1283: #   first names only used to break the tie.
 1284: #
 1285: #
 1286: sub compare_names {
 1287:     #  First split the names up into the primary fields.
 1288: 
 1289:     my ($u1, $d1, $s1, $n1, $stat1) = split(/:/, $a);
 1290:     my ($u2, $d2, $s2, $n2, $stat2) = split(/:/, $b);
 1291: 
 1292:     # Now split the last name and first name of each n:
 1293:     #
 1294: 
 1295:     my ($l1,$f1) = split(/,/, $n1);
 1296:     my ($l2,$f2) = split(/,/, $n2);
 1297: 
 1298:     # We don't bother to remove the leading/trailing whitespace from the
 1299:     # firstname, unless the last names compare identical.
 1300: 
 1301:     if($l1 lt $l2) {
 1302: 	return -1;
 1303:     }
 1304:     if($l1 gt $l2) {
 1305: 	return  1;
 1306:     }
 1307: 
 1308:     # Break the tie on the first name, but there are leading (possibly trailing
 1309:     # whitespaces to get rid of first 
 1310:     #
 1311:     $f1 =~ s/^\s+//;		# Remove leading...
 1312:     $f1 =~ s/\s+$//;		# Trailing spaces from first 1...
 1313:     
 1314:     $f2 =~ s/^\s+//;
 1315:     $f2 =~ s/\s+$//;		# And the same for first 2...
 1316: 
 1317:     if($f1 lt $f2) {
 1318: 	return -1;
 1319:     }
 1320:     if($f1 gt $f2) {
 1321: 	return 1;
 1322:     }
 1323:     
 1324:     #  Must be the same name.
 1325: 
 1326:     return 0;
 1327: }
 1328: 
 1329: sub latex_header_footer_remove {
 1330:     my $text = shift;
 1331:     $text =~ s/\\end\{document}//;
 1332:     $text =~ s/\\documentclass([^&]*)\\begin\{document}//;
 1333:     return $text;
 1334: }
 1335: #
 1336: #  If necessary, encapsulate text inside 
 1337: #  a minipage env.
 1338: #  necessity is determined by the problem_split param.
 1339: #
 1340: sub encapsulate_minipage {
 1341:     my ($text) = @_;
 1342:     if (!($env{'form.problem.split'} =~ /yes/i)) {
 1343: 	$text = '\begin{minipage}{\textwidth}'.$text.'\end{minipage}';
 1344:     }
 1345:     return $text;
 1346: }
 1347: #
 1348: #  The NUMBER_TO_PRINT and SPLIT_PDFS
 1349: #  variables interact, this sub looks at these two parameters
 1350: #  and comes up with a final value for NUMBER_TO_PRINT which can be:
 1351: #     all     - if SPLIT_PDFS eq 'all'.
 1352: #     1       - if SPLIT_PDFS eq 'oneper'
 1353: #     section - if SPLIT_PDFS eq 'sections'
 1354: #     <unchanged> - if SPLIT_PDFS eq 'usenumber'
 1355: #
 1356: sub adjust_number_to_print {
 1357:     my $helper = shift;
 1358: 
 1359:     my $split_pdf = $helper->{'VARS'}->{'SPLIT_PDFS'};
 1360:     
 1361:     if ($split_pdf eq 'all') {
 1362: 	$helper->{'VARS'}->{'NUMBER_TO_PRINT'} = 'all';
 1363:     } elsif ($split_pdf eq 'oneper') {
 1364: 	$helper->{'VARS'}->{'NUMBER_TO_PRINT'} = 1;
 1365:     } elsif ($split_pdf eq 'sections') {
 1366: 	$helper->{'VARS'}->{'NUMBER_TO_PRINT'} = 'section';
 1367:     } elsif ($split_pdf eq 'usenumber') {
 1368: 	#  Unmodified.
 1369:     } else {
 1370: 	# Error!!!!
 1371: 	
 1372: 	croak "bad SPLIT_PDFS: $split_pdf in lonprintout::adjust_number_to_print";
 1373: 
 1374:     }
 1375: }
 1376: 
 1377: 
 1378: sub character_chart {
 1379:     my $result = shift;
 1380:     return  &Apache::entities::replace_entities($result);
 1381: }
 1382: 
 1383: sub old_character_chart {
 1384:     my $result = shift;	
 1385:     $result =~ s/&\#0?0?(7|9);//g;
 1386:     $result =~ s/&\#0?(10|13);//g;
 1387:     $result =~ s/&\#0?32;/ /g;
 1388:     $result =~ s/&\#0?33;/!/g;
 1389:     $result =~ s/&(\#0?34|quot);/\"/g;
 1390:     $result =~ s/&\#0?35;/\\\#/g;
 1391:     $result =~ s/&\#0?36;/\\\$/g;
 1392:     $result =~ s/&\#0?37;/\\%/g; 
 1393:     $result =~ s/&(\#0?38|amp);/\\&/g; 
 1394:     $result =~ s/&\#(0?39|146);/\'/g;
 1395:     $result =~ s/&\#0?40;/(/g;
 1396:     $result =~ s/&\#0?41;/)/g;
 1397:     $result =~ s/&\#0?42;/\*/g;
 1398:     $result =~ s/&\#0?43;/\+/g;
 1399:     $result =~ s/&\#(0?44|130);/,/g;
 1400:     $result =~ s/&\#0?45;/-/g;
 1401:     $result =~ s/&\#0?46;/\./g;
 1402:     $result =~ s/&\#0?47;/\//g;
 1403:     $result =~ s/&\#0?48;/0/g;
 1404:     $result =~ s/&\#0?49;/1/g;
 1405:     $result =~ s/&\#0?50;/2/g;
 1406:     $result =~ s/&\#0?51;/3/g;
 1407:     $result =~ s/&\#0?52;/4/g;
 1408:     $result =~ s/&\#0?53;/5/g;
 1409:     $result =~ s/&\#0?54;/6/g;
 1410:     $result =~ s/&\#0?55;/7/g;
 1411:     $result =~ s/&\#0?56;/8/g;
 1412:     $result =~ s/&\#0?57;/9/g;
 1413:     $result =~ s/&\#0?58;/:/g;
 1414:     $result =~ s/&\#0?59;/;/g;
 1415:     $result =~ s/&(\#0?60|lt|\#139);/\$<\$/g;
 1416:     $result =~ s/&\#0?61;/\\ensuremath\{=\}/g;
 1417:     $result =~ s/&(\#0?62|gt|\#155);/\\ensuremath\{>\}/g;
 1418:     $result =~ s/&\#0?63;/\?/g;
 1419:     $result =~ s/&\#0?65;/A/g;
 1420:     $result =~ s/&\#0?66;/B/g;
 1421:     $result =~ s/&\#0?67;/C/g;
 1422:     $result =~ s/&\#0?68;/D/g;
 1423:     $result =~ s/&\#0?69;/E/g;
 1424:     $result =~ s/&\#0?70;/F/g;
 1425:     $result =~ s/&\#0?71;/G/g;
 1426:     $result =~ s/&\#0?72;/H/g;
 1427:     $result =~ s/&\#0?73;/I/g;
 1428:     $result =~ s/&\#0?74;/J/g;
 1429:     $result =~ s/&\#0?75;/K/g;
 1430:     $result =~ s/&\#0?76;/L/g;
 1431:     $result =~ s/&\#0?77;/M/g;
 1432:     $result =~ s/&\#0?78;/N/g;
 1433:     $result =~ s/&\#0?79;/O/g;
 1434:     $result =~ s/&\#0?80;/P/g;
 1435:     $result =~ s/&\#0?81;/Q/g;
 1436:     $result =~ s/&\#0?82;/R/g;
 1437:     $result =~ s/&\#0?83;/S/g;
 1438:     $result =~ s/&\#0?84;/T/g;
 1439:     $result =~ s/&\#0?85;/U/g;
 1440:     $result =~ s/&\#0?86;/V/g;
 1441:     $result =~ s/&\#0?87;/W/g;
 1442:     $result =~ s/&\#0?88;/X/g;
 1443:     $result =~ s/&\#0?89;/Y/g;
 1444:     $result =~ s/&\#0?90;/Z/g;
 1445:     $result =~ s/&\#0?91;/[/g;
 1446:     $result =~ s/&\#0?92;/\\ensuremath\{\\setminus\}/g;
 1447:     $result =~ s/&\#0?93;/]/g;
 1448:     $result =~ s/&\#(0?94|136);/\\ensuremath\{\\wedge\}/g;
 1449:     $result =~ s/&\#(0?95|138|154);/\\underline{\\makebox[2mm]{\\strut}}/g;
 1450:     $result =~ s/&\#(0?96|145);/\`/g;
 1451:     $result =~ s/&\#0?97;/a/g;
 1452:     $result =~ s/&\#0?98;/b/g;
 1453:     $result =~ s/&\#0?99;/c/g;
 1454:     $result =~ s/&\#100;/d/g;
 1455:     $result =~ s/&\#101;/e/g;
 1456:     $result =~ s/&\#102;/f/g;
 1457:     $result =~ s/&\#103;/g/g;
 1458:     $result =~ s/&\#104;/h/g;
 1459:     $result =~ s/&\#105;/i/g;
 1460:     $result =~ s/&\#106;/j/g;
 1461:     $result =~ s/&\#107;/k/g;
 1462:     $result =~ s/&\#108;/l/g;
 1463:     $result =~ s/&\#109;/m/g;
 1464:     $result =~ s/&\#110;/n/g;
 1465:     $result =~ s/&\#111;/o/g;
 1466:     $result =~ s/&\#112;/p/g;
 1467:     $result =~ s/&\#113;/q/g;
 1468:     $result =~ s/&\#114;/r/g;
 1469:     $result =~ s/&\#115;/s/g;
 1470:     $result =~ s/&\#116;/t/g;
 1471:     $result =~ s/&\#117;/u/g;
 1472:     $result =~ s/&\#118;/v/g;
 1473:     $result =~ s/&\#119;/w/g;
 1474:     $result =~ s/&\#120;/x/g;
 1475:     $result =~ s/&\#121;/y/g;
 1476:     $result =~ s/&\#122;/z/g;
 1477:     $result =~ s/&\#123;/\\{/g;
 1478:     $result =~ s/&\#124;/\|/g;
 1479:     $result =~ s/&\#125;/\\}/g;
 1480:     $result =~ s/&\#126;/\~/g;
 1481:     $result =~ s/&\#131;/\\textflorin /g;
 1482:     $result =~ s/&\#132;/\"/g;
 1483:     $result =~ s/&\#133;/\\ensuremath\{\\ldots\}/g;
 1484:     $result =~ s/&\#134;/\\ensuremath\{\\dagger\}/g;
 1485:     $result =~ s/&\#135;/\\ensuremath\{\\ddagger\}/g;
 1486:     $result =~ s/&\#137;/\\textperthousand /g;
 1487:     $result =~ s/&\#140;/{\\OE}/g;
 1488:     $result =~ s/&\#147;/\`\`/g;
 1489:     $result =~ s/&\#148;/\'\'/g;
 1490:     $result =~ s/&\#149;/\\ensuremath\{\\bullet\}/g;
 1491:     $result =~ s/&(\#150|\#8211);/--/g;
 1492:     $result =~ s/&\#151;/---/g;
 1493:     $result =~ s/&\#152;/\\ensuremath\{\\sim\}/g;
 1494:     $result =~ s/&\#153;/\\texttrademark /g;
 1495:     $result =~ s/&\#156;/\\oe/g;
 1496:     $result =~ s/&\#159;/\\\"Y/g;
 1497:     $result =~ s/&(\#160|nbsp);/~/g;
 1498:     $result =~ s/&(\#161|iexcl);/!\`/g;
 1499:     $result =~ s/&(\#162|cent);/\\textcent /g;
 1500:     $result =~ s/&(\#163|pound);/\\pounds /g; 
 1501:     $result =~ s/&(\#164|curren);/\\textcurrency /g;
 1502:     $result =~ s/&(\#165|yen);/\\textyen /g;
 1503:     $result =~ s/&(\#166|brvbar);/\\textbrokenbar /g;
 1504:     $result =~ s/&(\#167|sect);/\\textsection /g;
 1505:     $result =~ s/&(\#168|uml);/\\"\{\} /g;
 1506:     $result =~ s/&(\#169|copy);/\\copyright /g;
 1507:     $result =~ s/&(\#170|ordf);/\\textordfeminine /g;
 1508:     $result =~ s/&(\#172|not);/\\ensuremath\{\\neg\}/g;
 1509:     $result =~ s/&(\#173|shy);/ - /g;
 1510:     $result =~ s/&(\#174|reg);/\\textregistered /g;
 1511:     $result =~ s/&(\#175|macr);/\\ensuremath\{^{-}\}/g;
 1512:     $result =~ s/&(\#176|deg);/\\ensuremath\{^{\\circ}\}/g;
 1513:     $result =~ s/&(\#177|plusmn);/\\ensuremath\{\\pm\}/g;
 1514:     $result =~ s/&(\#178|sup2);/\\ensuremath\{^2\}/g;
 1515:     $result =~ s/&(\#179|sup3);/\\ensuremath\{^3\}/g;
 1516:     $result =~ s/&(\#180|acute);/\\'\{\} /g;
 1517:     $result =~ s/&(\#181|micro);/\\ensuremath\{\\mu\}/g;
 1518:     $result =~ s/&(\#182|para);/\\P/g;
 1519:     $result =~ s/&(\#183|middot);/\\ensuremath\{\\cdot\}/g;
 1520:     $result =~ s/&(\#184|cedil);/\\c{\\strut}/g;
 1521:     $result =~ s/&(\#185|sup1);/\\ensuremath\{^1\}/g;
 1522:     $result =~ s/&(\#186|ordm);/\\textordmasculine /g;
 1523:     $result =~ s/&(\#188|frac14);/\\textonequarter /g;
 1524:     $result =~ s/&(\#189|frac12);/\\textonehalf /g;
 1525:     $result =~ s/&(\#190|frac34);/\\textthreequarters /g;
 1526:     $result =~ s/&(\#191|iquest);/?\`/g;   
 1527:     $result =~ s/&(\#192|Agrave);/\\\`{A}/g;  
 1528:     $result =~ s/&(\#193|Aacute);/\\\'{A}/g; 
 1529:     $result =~ s/&(\#194|Acirc);/\\^{A}/g;
 1530:     $result =~ s/&(\#195|Atilde);/\\~{A}/g;
 1531:     $result =~ s/&(\#196|Auml);/\\\"{A}/g; 
 1532:     $result =~ s/&(\#197|Aring);/{\\AA}/g;
 1533:     $result =~ s/&(\#198|AElig);/{\\AE}/g;
 1534:     $result =~ s/&(\#199|Ccedil);/\\c{c}/g;
 1535:     $result =~ s/&(\#200|Egrave);/\\\`{E}/g;  
 1536:     $result =~ s/&(\#201|Eacute);/\\\'{E}/g;    
 1537:     $result =~ s/&(\#202|Ecirc);/\\^{E}/g;
 1538:     $result =~ s/&(\#203|Euml);/\\\"{E}/g;
 1539:     $result =~ s/&(\#204|Igrave);/\\\`{I}/g;
 1540:     $result =~ s/&(\#205|Iacute);/\\\'{I}/g;    
 1541:     $result =~ s/&(\#206|Icirc);/\\^{I}/g;
 1542:     $result =~ s/&(\#207|Iuml);/\\\"{I}/g;    
 1543:     $result =~ s/&(\#209|Ntilde);/\\~{N}/g;
 1544:     $result =~ s/&(\#210|Ograve);/\\\`{O}/g;
 1545:     $result =~ s/&(\#211|Oacute);/\\\'{O}/g;
 1546:     $result =~ s/&(\#212|Ocirc);/\\^{O}/g;
 1547:     $result =~ s/&(\#213|Otilde);/\\~{O}/g;
 1548:     $result =~ s/&(\#214|Ouml);/\\\"{O}/g;    
 1549:     $result =~ s/&(\#215|times);/\\ensuremath\{\\times\}/g;
 1550:     $result =~ s/&(\#216|Oslash);/{\\O}/g;
 1551:     $result =~ s/&(\#217|Ugrave);/\\\`{U}/g;    
 1552:     $result =~ s/&(\#218|Uacute);/\\\'{U}/g;
 1553:     $result =~ s/&(\#219|Ucirc);/\\^{U}/g;
 1554:     $result =~ s/&(\#220|Uuml);/\\\"{U}/g;
 1555:     $result =~ s/&(\#221|Yacute);/\\\'{Y}/g;
 1556:     $result =~ s/&(\#223|szlig);/{\\ss}/g;
 1557:     $result =~ s/&(\#224|agrave);/\\\`{a}/g;
 1558:     $result =~ s/&(\#225|aacute);/\\\'{a}/g;
 1559:     $result =~ s/&(\#226|acirc);/\\^{a}/g;
 1560:     $result =~ s/&(\#227|atilde);/\\~{a}/g;
 1561:     $result =~ s/&(\#228|auml);/\\\"{a}/g;
 1562:     $result =~ s/&(\#229|aring);/{\\aa}/g;
 1563:     $result =~ s/&(\#230|aelig);/{\\ae}/g;
 1564:     $result =~ s/&(\#231|ccedil);/\\c{c}/g;
 1565:     $result =~ s/&(\#232|egrave);/\\\`{e}/g;
 1566:     $result =~ s/&(\#233|eacute);/\\\'{e}/g;
 1567:     $result =~ s/&(\#234|ecirc);/\\^{e}/g;
 1568:     $result =~ s/&(\#235|euml);/\\\"{e}/g;
 1569:     $result =~ s/&(\#236|igrave);/\\\`{i}/g;
 1570:     $result =~ s/&(\#237|iacute);/\\\'{i}/g;
 1571:     $result =~ s/&(\#238|icirc);/\\^{i}/g;
 1572:     $result =~ s/&(\#239|iuml);/\\\"{i}/g;
 1573:     $result =~ s/&(\#240|eth);/\\ensuremath\{\\partial\}/g;
 1574:     $result =~ s/&(\#241|ntilde);/\\~{n}/g;
 1575:     $result =~ s/&(\#242|ograve);/\\\`{o}/g;
 1576:     $result =~ s/&(\#243|oacute);/\\\'{o}/g;
 1577:     $result =~ s/&(\#244|ocirc);/\\^{o}/g;
 1578:     $result =~ s/&(\#245|otilde);/\\~{o}/g;
 1579:     $result =~ s/&(\#246|ouml);/\\\"{o}/g;
 1580:     $result =~ s/&(\#247|divide);/\\ensuremath\{\\div\}/g;
 1581:     $result =~ s/&(\#248|oslash);/{\\o}/g;
 1582:     $result =~ s/&(\#249|ugrave);/\\\`{u}/g; 
 1583:     $result =~ s/&(\#250|uacute);/\\\'{u}/g;
 1584:     $result =~ s/&(\#251|ucirc);/\\^{u}/g;
 1585:     $result =~ s/&(\#252|uuml);/\\\"{u}/g;
 1586:     $result =~ s/&(\#253|yacute);/\\\'{y}/g;
 1587:     $result =~ s/&(\#255|yuml);/\\\"{y}/g;
 1588:     $result =~ s/&\#295;/\\ensuremath\{\\hbar\}/g;
 1589:     $result =~ s/&\#952;/\\ensuremath\{\\theta\}/g;
 1590: #Greek Alphabet
 1591:     $result =~ s/&(alpha|\#945);/\\ensuremath\{\\alpha\}/g;
 1592:     $result =~ s/&(beta|\#946);/\\ensuremath\{\\beta\}/g;
 1593:     $result =~ s/&(gamma|\#947);/\\ensuremath\{\\gamma\}/g;
 1594:     $result =~ s/&(delta|\#948);/\\ensuremath\{\\delta\}/g;
 1595:     $result =~ s/&(epsilon|\#949);/\\ensuremath\{\\epsilon\}/g;
 1596:     $result =~ s/&(zeta|\#950);/\\ensuremath\{\\zeta\}/g;
 1597:     $result =~ s/&(eta|\#951);/\\ensuremath\{\\eta\}/g;
 1598:     $result =~ s/&(theta|\#952);/\\ensuremath\{\\theta\}/g;
 1599:     $result =~ s/&(iota|\#953);/\\ensuremath\{\\iota\}/g;
 1600:     $result =~ s/&(kappa|\#954);/\\ensuremath\{\\kappa\}/g;
 1601:     $result =~ s/&(lambda|\#955);/\\ensuremath\{\\lambda\}/g;
 1602:     $result =~ s/&(mu|\#956);/\\ensuremath\{\\mu\}/g;
 1603:     $result =~ s/&(nu|\#957);/\\ensuremath\{\\nu\}/g;
 1604:     $result =~ s/&(xi|\#958);/\\ensuremath\{\\xi\}/g;
 1605:     $result =~ s/&(omicron|\#959);/o/g;
 1606:     $result =~ s/&(pi|\#960);/\\ensuremath\{\\pi\}/g;
 1607:     $result =~ s/&(rho|\#961);/\\ensuremath\{\\rho\}/g;
 1608:     $result =~ s/&(sigma|\#963);/\\ensuremath\{\\sigma\}/g;
 1609:     $result =~ s/&(tau|\#964);/\\ensuremath\{\\tau\}/g;
 1610:     $result =~ s/&(upsilon|\#965);/\\ensuremath\{\\upsilon\}/g;
 1611:     $result =~ s/&(phi|\#966);/\\ensuremath\{\\phi\}/g;
 1612:     $result =~ s/&(chi|\#967);/\\ensuremath\{\\chi\}/g;
 1613:     $result =~ s/&(psi|\#968);/\\ensuremath\{\\psi\}/g;
 1614:     $result =~ s/&(omega|\#969);/\\ensuremath\{\\omega\}/g;
 1615:     $result =~ s/&(thetasym|\#977);/\\ensuremath\{\\vartheta\}/g;
 1616:     $result =~ s/&(piv|\#982);/\\ensuremath\{\\varpi\}/g;
 1617:     $result =~ s/&(Alpha|\#913);/A/g;
 1618:     $result =~ s/&(Beta|\#914);/B/g;
 1619:     $result =~ s/&(Gamma|\#915);/\\ensuremath\{\\Gamma\}/g;
 1620:     $result =~ s/&(Delta|\#916);/\\ensuremath\{\\Delta\}/g;
 1621:     $result =~ s/&(Epsilon|\#917);/E/g;
 1622:     $result =~ s/&(Zeta|\#918);/Z/g;
 1623:     $result =~ s/&(Eta|\#919);/H/g;
 1624:     $result =~ s/&(Theta|\#920);/\\ensuremath\{\\Theta\}/g;
 1625:     $result =~ s/&(Iota|\#921);/I/g;
 1626:     $result =~ s/&(Kappa|\#922);/K/g;
 1627:     $result =~ s/&(Lambda|\#923);/\\ensuremath\{\\Lambda\}/g;
 1628:     $result =~ s/&(Mu|\#924);/M/g;
 1629:     $result =~ s/&(Nu|\#925);/N/g;
 1630:     $result =~ s/&(Xi|\#926);/\\ensuremath\{\\Xi\}/g;
 1631:     $result =~ s/&(Omicron|\#927);/O/g;
 1632:     $result =~ s/&(Pi|\#928);/\\ensuremath\{\\Pi\}/g;
 1633:     $result =~ s/&(Rho|\#929);/P/g;
 1634:     $result =~ s/&(Sigma|\#931);/\\ensuremath\{\\Sigma\}/g;
 1635:     $result =~ s/&(Tau|\#932);/T/g;
 1636:     $result =~ s/&(Upsilon|\#933);/\\ensuremath\{\\Upsilon\}/g;
 1637:     $result =~ s/&(Phi|\#934);/\\ensuremath\{\\Phi\}/g;
 1638:     $result =~ s/&(Chi|\#935);/X/g;
 1639:     $result =~ s/&(Psi|\#936);/\\ensuremath\{\\Psi\}/g;
 1640:     $result =~ s/&(Omega|\#937);/\\ensuremath\{\\Omega\}/g;
 1641: #Arrows (extended HTML 4.01)
 1642:     $result =~ s/&(larr|\#8592);/\\ensuremath\{\\leftarrow\}/g;
 1643:     $result =~ s/&(uarr|\#8593);/\\ensuremath\{\\uparrow\}/g;
 1644:     $result =~ s/&(rarr|\#8594);/\\ensuremath\{\\rightarrow\}/g;
 1645:     $result =~ s/&(darr|\#8595);/\\ensuremath\{\\downarrow\}/g;
 1646:     $result =~ s/&(harr|\#8596);/\\ensuremath\{\\leftrightarrow\}/g;
 1647:     $result =~ s/&(lArr|\#8656);/\\ensuremath\{\\Leftarrow\}/g;
 1648:     $result =~ s/&(uArr|\#8657);/\\ensuremath\{\\Uparrow\}/g;
 1649:     $result =~ s/&(rArr|\#8658);/\\ensuremath\{\\Rightarrow\}/g;
 1650:     $result =~ s/&(dArr|\#8659);/\\ensuremath\{\\Downarrow\}/g;
 1651:     $result =~ s/&(hArr|\#8660);/\\ensuremath\{\\Leftrightarrow\}/g;
 1652: #Mathematical Operators (extended HTML 4.01)
 1653:     $result =~ s/&(forall|\#8704);/\\ensuremath\{\\forall\}/g;
 1654:     $result =~ s/&(part|\#8706);/\\ensuremath\{\\partial\}/g;
 1655:     $result =~ s/&(exist|\#8707);/\\ensuremath\{\\exists\}/g;
 1656:     $result =~ s/&(empty|\#8709);/\\ensuremath\{\\emptyset\}/g;
 1657:     $result =~ s/&(nabla|\#8711);/\\ensuremath\{\\nabla\}/g;
 1658:     $result =~ s/&(isin|\#8712);/\\ensuremath\{\\in\}/g;
 1659:     $result =~ s/&(notin|\#8713);/\\ensuremath\{\\notin\}/g;
 1660:     $result =~ s/&(ni|\#8715);/\\ensuremath\{\\ni\}/g;
 1661:     $result =~ s/&(prod|\#8719);/\\ensuremath\{\\prod\}/g;
 1662:     $result =~ s/&(sum|\#8721);/\\ensuremath\{\\sum\}/g;
 1663:     $result =~ s/&(minus|\#8722);/\\ensuremath\{-\}/g;
 1664:     $result =~ s/–/\\ensuremath\{-\}/g;
 1665:     $result =~ s/&(lowast|\#8727);/\\ensuremath\{*\}/g;
 1666:     $result =~ s/&(radic|\#8730);/\\ensuremath\{\\surd\}/g;
 1667:     $result =~ s/&(prop|\#8733);/\\ensuremath\{\\propto\}/g;
 1668:     $result =~ s/&(infin|\#8734);/\\ensuremath\{\\infty\}/g;
 1669:     $result =~ s/&(ang|\#8736);/\\ensuremath\{\\angle\}/g;
 1670:     $result =~ s/&(and|\#8743);/\\ensuremath\{\\wedge\}/g;
 1671:     $result =~ s/&(or|\#8744);/\\ensuremath\{\\vee\}/g;
 1672:     $result =~ s/&(cap|\#8745);/\\ensuremath\{\\cap\}/g;
 1673:     $result =~ s/&(cup|\#8746);/\\ensuremath\{\\cup\}/g;
 1674:     $result =~ s/&(int|\#8747);/\\ensuremath\{\\int\}/g;
 1675:     $result =~ s/&(sim|\#8764);/\\ensuremath\{\\sim\}/g;
 1676:     $result =~ s/&(cong|\#8773);/\\ensuremath\{\\cong\}/g;
 1677:     $result =~ s/&(asymp|\#8776);/\\ensuremath\{\\approx\}/g;
 1678:     $result =~ s/&(ne|\#8800);/\\ensuremath\{\\not=\}/g;
 1679:     $result =~ s/&(equiv|\#8801);/\\ensuremath\{\\equiv\}/g;
 1680:     $result =~ s/&(le|\#8804);/\\ensuremath\{\\leq\}/g;
 1681:     $result =~ s/&(ge|\#8805);/\\ensuremath\{\\geq\}/g;
 1682:     $result =~ s/&(sub|\#8834);/\\ensuremath\{\\subset\}/g;
 1683:     $result =~ s/&(sup|\#8835);/\\ensuremath\{\\supset\}/g;
 1684:     $result =~ s/&(nsub|\#8836);/\\ensuremath\{\\not\\subset\}/g;
 1685:     $result =~ s/&(sube|\#8838);/\\ensuremath\{\\subseteq\}/g;
 1686:     $result =~ s/&(supe|\#8839);/\\ensuremath\{\\supseteq\}/g;
 1687:     $result =~ s/&(oplus|\#8853);/\\ensuremath\{\\oplus\}/g;
 1688:     $result =~ s/&(otimes|\#8855);/\\ensuremath\{\\otimes\}/g;
 1689:     $result =~ s/&(perp|\#8869);/\\ensuremath\{\\perp\}/g;
 1690:     $result =~ s/&(sdot|\#8901);/\\ensuremath\{\\cdot\}/g;
 1691: #Geometric Shapes (extended HTML 4.01)
 1692:     $result =~ s/&(loz|\#9674);/\\ensuremath\{\\Diamond\}/g;
 1693: #Miscellaneous Symbols (extended HTML 4.01)
 1694:     $result =~ s/&(spades|\#9824);/\\ensuremath\{\\spadesuit\}/g;
 1695:     $result =~ s/&(clubs|\#9827);/\\ensuremath\{\\clubsuit\}/g;
 1696:     $result =~ s/&(hearts|\#9829);/\\ensuremath\{\\heartsuit\}/g;
 1697:     $result =~ s/&(diams|\#9830);/\\ensuremath\{\\diamondsuit\}/g;
 1698: #   Chemically useful 'things' contributed by Hon Kie (bug 4652).
 1699: 
 1700:     $result =~ s/&\#8636;/\\ensuremath\{\\leftharpoonup\}/g;
 1701:     $result =~ s/&\#8637;/\\ensuremath\{\\leftharpoondown\}/g;
 1702:     $result =~ s/&\#8640;/\\ensuremath\{\\rightharpoonup\}/g;
 1703:     $result =~ s/&\#8641;/\\ensuremath\{\\rightharpoondown\}/g;
 1704:     $result =~ s/&\#8652;/\\ensuremath\{\\rightleftharpoons\}/g;
 1705:     $result =~ s/&\#8605;/\\ensuremath\{\\leadsto\}/g;
 1706:     $result =~ s/&\#8617;/\\ensuremath\{\\hookleftarrow\}/g;
 1707:     $result =~ s/&\#8618;/\\ensuremath\{\\hookrightarrow\}/g;
 1708:     $result =~ s/&\#8614;/\\ensuremath\{\\mapsto\}/g;
 1709:     $result =~ s/&\#8599;/\\ensuremath\{\\nearrow\}/g;
 1710:     $result =~ s/&\#8600;/\\ensuremath\{\\searrow\}/g;
 1711:     $result =~ s/&\#8601;/\\ensuremath\{\\swarrow\}/g;
 1712:     $result =~ s/&\#8598;/\\ensuremath\{\\nwarrow\}/g;
 1713: 
 1714:     # Left/right quotations:
 1715: 
 1716:     $result =~ s/&(ldquo|#8220);/\`\`/g;
 1717:     $result =~ s/&(rdquo|#8221);/\'\'/g;
 1718: 
 1719: 
 1720: 
 1721:     return $result;
 1722: }
 1723: 
 1724: 
 1725:                   #width, height, oddsidemargin, evensidemargin, topmargin
 1726: my %page_formats=
 1727:     ('letter' => {
 1728: 	 'book' => {
 1729: 	     '1' => [ '7.1 in','9.8 in', '-0.57 in','-0.57 in','0.275 in'],
 1730: 	     '2' => ['3.66 in','9.8 in', '-0.57 in','-0.57 in','0.275 in']
 1731: 	 },
 1732: 	 'album' => {
 1733: 	     '1' => [ '8.8 in', '6.8 in','-0.55 in',  '-0.55 in','0.394 in'],
 1734: 	     '2' => [ '4.8 in', '6.8 in','-0.5 in', '-1.0 in','3.5 in']
 1735: 	 },
 1736:      },
 1737:      'legal' => {
 1738: 	 'book' => {
 1739: 	     '1' => ['7.1 in','13 in',,'-0.57 in','-0.57 in','-0.5 in'],
 1740: 	     '2' => ['3.66 in','13 in','-0.57 in','-0.57 in','-0.5 in']
 1741: 	 },
 1742: 	 'album' => {
 1743: 	     '1' => ['12 in','7.1 in',,'-0.57 in','-0.57 in','-0.5 in'],
 1744:              '2' => ['6.0 in','7.1 in','-1 in','-1 in','5 in']
 1745:           },
 1746:      },
 1747:      'tabloid' => {
 1748: 	 'book' => {
 1749: 	     '1' => ['9.8 in','16 in','-0.57 in','-0.57 in','-0.5 in'],
 1750: 	     '2' => ['4.9 in','16 in','-0.57 in','-0.57 in','-0.5 in']
 1751: 	 },
 1752: 	 'album' => {
 1753: 	     '1' => ['16 in','9.8 in','-0.57 in','-0.57 in','-0.5 in'],
 1754: 	     '2' => ['16 in','4.9 in','-0.57 in','-0.57 in','-0.5 in']
 1755:           },
 1756:      },
 1757:      'executive' => {
 1758: 	 'book' => {
 1759: 	     '1' => ['6.8 in','9 in','-0.57 in','-0.57 in','1.2 in'],
 1760: 	     '2' => ['3.1 in','9 in','-0.57 in','-0.57 in','1.2 in']
 1761: 	 },
 1762: 	 'album' => {
 1763: 	     '1' => [],
 1764: 	     '2' => []
 1765:           },
 1766:      },
 1767:      'a2' => {
 1768: 	 'book' => {
 1769: 	     '1' => [],
 1770: 	     '2' => []
 1771: 	 },
 1772: 	 'album' => {
 1773: 	     '1' => [],
 1774: 	     '2' => []
 1775:           },
 1776:      },
 1777:      'a3' => {
 1778: 	 'book' => {
 1779: 	     '1' => [],
 1780: 	     '2' => []
 1781: 	 },
 1782: 	 'album' => {
 1783: 	     '1' => [],
 1784: 	     '2' => []
 1785:           },
 1786:      },
 1787:      'a4' => {
 1788: 	 'book' => {
 1789: 	     '1' => ['17.6 cm','27.2 cm','-1.397 cm','-2.11 cm','-1.27 cm'],
 1790: 	     '2' => [ '9.1 cm','27.2 cm','-1.397 cm','-2.11 cm','-1.27 cm']
 1791: 	 },
 1792: 	 'album' => {
 1793: 	     '1' => ['21.59 cm','19.558 cm','-1.397cm','-2.11 cm','0 cm'],
 1794: 	     '2' => ['9.91 cm','19.558 cm','-1.397 cm','-2.11 cm','0 cm']
 1795: 	 },
 1796:      },
 1797:      'a5' => {
 1798: 	 'book' => {
 1799: 	     '1' => [],
 1800: 	     '2' => []
 1801: 	 },
 1802: 	 'album' => {
 1803: 	     '1' => [],
 1804: 	     '2' => []
 1805:           },
 1806:      },
 1807:      'a6' => {
 1808: 	 'book' => {
 1809: 	     '1' => [],
 1810: 	     '2' => []
 1811: 	 },
 1812: 	 'album' => {
 1813: 	     '1' => [],
 1814: 	     '2' => []
 1815:           },
 1816:      },
 1817:      );
 1818: 
 1819: sub page_format {
 1820: #
 1821: #Supported paper format: "Letter [8 1/2x11 in]",      "Legal [8 1/2x14 in]",
 1822: #                        "Ledger/Tabloid [11x17 in]", "Executive [7 1/2x10 in]",
 1823: #                        "A2 [420x594 mm]",           "A3 [297x420 mm]",
 1824: #                        "A4 [210x297 mm]",           "A5 [148x210 mm]",
 1825: #                        "A6 [105x148 mm]"
 1826: # 
 1827:     my ($papersize,$layout,$numberofcolumns) = @_; 
 1828:     return @{$page_formats{$papersize}->{$layout}->{$numberofcolumns}};
 1829: }
 1830: 
 1831: 
 1832: sub get_name {
 1833:     my ($uname,$udom)=@_;
 1834:     if (!defined($uname)) { $uname=$env{'user.name'}; }
 1835:     if (!defined($udom)) { $udom=$env{'user.domain'}; }
 1836:     my $plainname=&Apache::loncommon::plainname($uname,$udom);
 1837:     if ($plainname=~/^\s*$/) { $plainname=$uname.'@'.$udom; }
 1838:    $plainname=&Apache::lonxml::latex_special_symbols($plainname,'header');
 1839:     return $plainname;
 1840: }
 1841: 
 1842: sub get_course {
 1843:     my $courseidinfo;
 1844:     if (defined($env{'request.course.id'})) {
 1845: 	$courseidinfo = &Apache::lonxml::latex_special_symbols(&unescape($env{'course.'.$env{'request.course.id'}.'.description'}),'header');
 1846: 	my $sec = $env{'request.course.sec'};
 1847: 	    
 1848:     }
 1849:     return $courseidinfo;
 1850: }
 1851: 
 1852: sub page_format_transformation {
 1853:     my ($papersize,$layout,$numberofcolumns,$choice,$text,$assignment,$tableofcontents,$indexlist,$selectionmade) = @_; 
 1854:     my ($textwidth,$textheight,$oddoffset,$evenoffset,$topmargin);
 1855: 
 1856:     if ($selectionmade eq '4') {
 1857: 	if ($choice eq 'all_problems') {
 1858:             $assignment=&mt('Problems from the Whole Course');
 1859: 	} else {
 1860:             $assignment=&mt('Resources from the Whole Course');
 1861: 	}
 1862:     } else {
 1863: 	$assignment=&Apache::lonxml::latex_special_symbols($assignment,'header');
 1864:     }
 1865:     ($textwidth,$textheight,$oddoffset,$evenoffset,$topmargin) = &page_format($papersize,$layout,$numberofcolumns,$topmargin);
 1866: 
 1867: 
 1868:     my $name = &get_name();
 1869:     my $courseidinfo = &get_course();
 1870:     my $header_text  = $parmhash{'print_header_format'};
 1871:     $header_text     = &format_page_header($textwidth, $header_text, $assignment,
 1872: 					   $courseidinfo, $name);
 1873:     my $topmargintoinsert = '';
 1874:     if ($topmargin ne '0') {$topmargintoinsert='\setlength{\topmargin}{'.$topmargin.'}';}
 1875:     my $fancypagestatement='';
 1876:     if ($numberofcolumns eq '2') {
 1877: 	$fancypagestatement="\\fancyhead{}\\fancyhead[LO]{$header_text}";
 1878:     } else {
 1879: 	$fancypagestatement="\\rhead{}\\chead{}\\lhead{$header_text}";
 1880:     }
 1881:     if ($layout eq 'album') {
 1882: 	    $text =~ s/\\begin\{document}/\\setlength{\\oddsidemargin}{$oddoffset}\\setlength{\\evensidemargin}{$evenoffset}$topmargintoinsert\n\\setlength{\\textwidth}{$textwidth}\\setlength{\\textheight}{$textheight}\\setlength{\\textfloatsep}{8pt plus 2\.0pt minus 4\.0pt}\n\\newlength{\\minipagewidth}\\setlength{\\minipagewidth}{\\textwidth\/\$number_of_columns-0\.2cm}\\usepackage{fancyhdr}\\addtolength{\\headheight}{\\baselineskip}\n\\pagestyle{fancy}$fancypagestatement\\usepackage{booktabs}\\begin{document}\\voffset=-0\.8 cm\\setcounter{page}{1}\n /;
 1883:     } elsif ($layout eq 'book') {
 1884: 	if ($choice ne 'All class print') { 
 1885: 	    $text =~ s/\\begin\{document}/\\textheight $textheight\\oddsidemargin = $evenoffset\\evensidemargin = $evenoffset $topmargintoinsert\n\\textwidth= $textwidth\\newlength{\\minipagewidth}\\setlength{\\minipagewidth}{\\textwidth\/\$number_of_columns-0\.2cm}\n\\renewcommand{\\ref}{\\keephidden\}\\usepackage{fancyhdr}\\addtolength{\\headheight}{\\baselineskip}\\pagestyle{fancy}$fancypagestatement\\usepackage{booktabs}\\begin{document}\n\\voffset=-0\.8 cm\\setcounter{page}{1}\n/;
 1886: 	} else {
 1887: 	    $text =~ s/\\pagestyle\{fancy}\\rhead\{}\\chead\{}\s*\\begin\{document}/\\textheight = $textheight\\oddsidemargin = $evenoffset\n\\evensidemargin = $evenoffset $topmargintoinsert\\textwidth= $textwidth\\newlength{\\minipagewidth}\n\\setlength{\\minipagewidth}{\\textwidth\/\$number_of_columns-0\.2cm}\\renewcommand{\\ref}{\\keephidden\}\\pagestyle{fancy}\\rhead{}\\chead{}\\usepackage{booktabs}\\begin{document}\\voffset=-0\.8cm\n\\setcounter{page}{1}  \\vskip 5 mm\n /;
 1888: 	}
 1889: 	if ($papersize eq 'a4') {
 1890: 	    my $papersize_text;
 1891: 	    if ($perm{'pav'}) {
 1892: 		$papersize_text = '\\special{papersize=210mm,297mm}';
 1893: 	    } else {
 1894: 		$papersize_text = '\special{papersize=210mm,297mm}';
 1895: 	    }
 1896: 	    $text =~ s/(\\begin\{document})/$1$papersize_text/;
 1897: 	}
 1898:     }
 1899:     if ($tableofcontents eq 'yes') {$text=~s/(\\setcounter\{page\}\{1\})/$1 \\tableofcontents\\newpage /;}
 1900:     if ($indexlist eq 'yes') {
 1901: 	$text=~s/(\\begin\{document})/\\makeindex $1/;
 1902: 	$text=~s/(\\end\{document})/\\strut\\\\\\strut\\printindex $1/;
 1903:     }
 1904:     return $text;
 1905: }
 1906: 
 1907: 
 1908: sub page_cleanup {
 1909:     my $result = shift;	
 1910:  
 1911:     $result =~ m/\\end\{document}(\d*)$/;
 1912:     my $number_of_columns = $1;
 1913:     my $insert = '{';
 1914:     for (my $id=1;$id<=$number_of_columns;$id++) { $insert .='l'; }
 1915:     $insert .= '}';
 1916:     $result =~ s/(\\begin\{longtable})INSERTTHEHEADOFLONGTABLE\\endfirsthead\\endhead/$1$insert/g;
 1917:     $result =~ s/&\s*REMOVETHEHEADOFLONGTABLE\\\\/\\\\/g;
 1918:     return $result,$number_of_columns;
 1919: }
 1920: 
 1921: 
 1922: sub details_for_menu {
 1923:     my ($helper)=@_;
 1924:     my $postdata=$env{'form.postdata'};
 1925:     if (!$postdata) { $postdata=$helper->{VARS}{'postdata'}; }
 1926:     my $name_of_resource = &Apache::lonnet::gettitle($postdata);
 1927:     my $symbolic = &Apache::lonnet::symbread($postdata);
 1928:     return if ( $symbolic eq '');
 1929: 
 1930:     my ($map,$id,$resource)=&Apache::lonnet::decode_symb($symbolic);
 1931:     $map=&Apache::lonnet::clutter($map);
 1932:     my $name_of_sequence = &Apache::lonnet::gettitle($map);
 1933:     if ($name_of_sequence =~ /^\s*$/) {
 1934: 	$map =~ m|([^/]+)$|;
 1935: 	$name_of_sequence = $1;
 1936:     }
 1937:     my $name_of_map = &Apache::lonnet::gettitle($env{'request.course.uri'});
 1938:     if ($name_of_map =~ /^\s*$/) {
 1939: 	$env{'request.course.uri'} =~ m|([^/]+)$|;
 1940: 	$name_of_map = $1;
 1941:     }
 1942:     return ($name_of_resource,$name_of_sequence,$name_of_map);
 1943: }
 1944: 
 1945: sub copyright_line {
 1946:     return '\noindent\makebox[\textwidth/$number_of_columns][b]{\hrulefill}\vspace*{-2 mm}\newline\noindent{\tiny Printed from LON-CAPA\copyright MSU{\hfill} Licensed under GNU General Public License } ';
 1947: }
 1948: my $end_of_student = "\n".'\special{ps:ENDOFSTUDENTSTAMP}'."\n";
 1949: 
 1950: sub latex_corrections {
 1951:     my ($number_of_columns,$result,$selectionmade,$answer_mode) = @_;
 1952: #    $result =~ s/\\includegraphics\{/\\includegraphics\[width=\\minipagewidth\]{/g;
 1953:     my $copyright = &copyright_line();
 1954:     if ($selectionmade eq '1' || $answer_mode eq 'only') {
 1955: 	$result =~ s/(\\end\{document})/\\strut\\vskip 0 mm $copyright $end_of_student $1/;
 1956:     } else {
 1957: 	$result =~ s/(\\end\{document})/\\strut\\vspace\*{-4 mm}\\newline $copyright $end_of_student $1/;
 1958:     }
 1959:     $result =~ s/\$number_of_columns/$number_of_columns/g;
 1960:     $result =~ s/(\\end\{longtable}\s*)(\\strut\\newline\\noindent\\makebox\[\\textwidth\/$number_of_columns\]\[b\]{\\hrulefill})/$2$1/g;
 1961:     $result =~ s/(\\end\{longtable}\s*)\\strut\\newline/$1/g;
 1962: #-- LaTeX corrections     
 1963:     my $first_comment = index($result,'<!--',0);
 1964:     while ($first_comment != -1) {
 1965: 	my $end_comment = index($result,'-->',$first_comment);
 1966: 	substr($result,$first_comment,$end_comment-$first_comment+3) = '';
 1967: 	$first_comment = index($result,'<!--',$first_comment);
 1968:     }
 1969:     $result =~ s/^\s+$//gm; #remove empty lines
 1970:     #removes more than one empty space
 1971:     $result =~ s|(\s\s+)|($1=~/[\n\r]/)?"\n":" "|ge;
 1972:     $result =~ s/\\\\\s*\\vskip/\\vskip/gm;
 1973:     $result =~ s/\\\\\s*\\noindent\s*(\\\\)+/\\\\\\noindent /g;
 1974:     $result =~ s/{\\par }\s*\\\\/\\\\/gm;
 1975:     $result =~ s/\\\\\s+\[/ \[/g;
 1976:     #conversion of html characters to LaTeX equivalents
 1977:     if ($result =~ m/&(\w+|#\d+);/) {
 1978: 	$result = &character_chart($result);
 1979:     }
 1980:     $result =~ s/(\\end\{tabular})\s*\\vskip 0 mm/$1/g;
 1981:     $result =~ s/(\\begin\{enumerate})\s*\\noindent/$1/g;
 1982:     return $result;
 1983: }
 1984: 
 1985: 
 1986: sub index_table {
 1987:     my $currentURL = shift;
 1988:     my $insex_string='';
 1989:     $currentURL=~s/\.([^\/+])$/\.$1\.meta/;
 1990:     $insex_string=&Apache::lonnet::metadata($currentURL,'keywords');
 1991:     return $insex_string;
 1992: }
 1993: 
 1994: 
 1995: sub IndexCreation {
 1996:     my ($texversion,$currentURL)=@_;
 1997:     my @key_words=split(/,/,&index_table($currentURL));
 1998:     my $chunk='';
 1999:     my $st=index $texversion,'\addcontentsline{toc}{subsection}{';
 2000:     if ($st>0) {
 2001: 	for (my $i=0;$i<3;$i++) {$st=(index $texversion,'}',$st+1);}
 2002: 	$chunk=substr($texversion,0,$st+1);
 2003: 	substr($texversion,0,$st+1)=' ';
 2004:     }
 2005:     foreach my $key_word (@key_words) {
 2006: 	if ($key_word=~/\S+/) {
 2007: 	    $texversion=~s/\b($key_word)\b/$1 \\index{$key_word} /i;
 2008: 	}
 2009:     }			
 2010:     if ($st>0) {substr($texversion,0,1)=$chunk;}
 2011:     return $texversion;
 2012: }
 2013: 
 2014: sub print_latex_header {
 2015:     my $mode=shift;
 2016: 
 2017:     return &Apache::londefdef::latex_header($mode);
 2018: }
 2019: 
 2020: sub path_to_problem {
 2021:     my ($urlp,$colwidth)=@_;
 2022:     $urlp=&Apache::lonnet::clutter($urlp);
 2023: 
 2024:     my $newurlp = '';
 2025:     $colwidth=~s/\s*mm\s*$//;
 2026: #characters average about 2 mm in width
 2027:     if (length($urlp)*2 > $colwidth) {
 2028: 	my @elements = split('/',$urlp);
 2029: 	my $curlength=0;
 2030: 	foreach my $element (@elements) {
 2031: 	    if ($element eq '') { next; }
 2032: 	    if ($curlength+(length($element)*2) > $colwidth) {
 2033: 		$newurlp .=  '|\vskip -1 mm \verb|';
 2034: 		$curlength=length($element)*2;
 2035: 	    } else {
 2036: 		$curlength+=length($element)*2;
 2037: 	    }
 2038: 	    $newurlp.='/'.$element;
 2039: 	}
 2040:     } else {
 2041: 	$newurlp=$urlp;
 2042:     }
 2043:     return '{\small\noindent\verb|'.$newurlp.'|\vskip 0 mm}';
 2044: }
 2045: 
 2046: sub recalcto_mm {
 2047:     my $textwidth=shift;
 2048:     my $LaTeXwidth;
 2049:     if ($textwidth=~/(-?\d+\.?\d*)\s*cm/) {
 2050: 	$LaTeXwidth = $1*10;
 2051:     } elsif ($textwidth=~/(-?\d+\.?\d*)\s*mm/) {
 2052: 	$LaTeXwidth = $1;
 2053:     } elsif ($textwidth=~/(-?\d+\.?\d*)\s*in/) {
 2054: 	$LaTeXwidth = $1*25.4;
 2055:     }
 2056:     $LaTeXwidth.=' mm';
 2057:     return $LaTeXwidth;
 2058: }
 2059: 
 2060: sub get_textwidth {
 2061:     my ($helper,$LaTeXwidth)=@_;
 2062:     my $textwidth=$LaTeXwidth;
 2063:     if ($helper->{'VARS'}->{'pagesize.width'}=~/\d+/ &&
 2064: 	$helper->{'VARS'}->{'pagesize.widthunit'}=~/\w+/) {
 2065: 	$textwidth=&recalcto_mm($helper->{'VARS'}->{'pagesize.width'}.' '.
 2066: 				$helper->{'VARS'}->{'pagesize.widthunit'});
 2067:     }
 2068:     return $textwidth;
 2069: }
 2070: 
 2071: 
 2072: sub unsupported {
 2073:     my ($currentURL,$mode,$symb)=@_;
 2074:     if ($mode ne '') {$mode='\\'.$mode}
 2075:     my $result.= &print_latex_header($mode);
 2076:     if ($currentURL=~m|^(/adm/wrapper/)?ext/|) {
 2077: 	$currentURL=~s|^(/adm/wrapper/)?ext/|http://|;
 2078:         $currentURL=~s|^http://https://|https://|;
 2079: 	my $title=&Apache::lonnet::gettitle($symb);
 2080: 	$title = &Apache::lonxml::latex_special_symbols($title);
 2081: 	$result.=' \strut \\\\ '.$title.' \strut \\\\ '.$currentURL.' ';
 2082:     } else {
 2083: 	$result.=$currentURL;
 2084:     }
 2085:     $result.= '\vskip 0.5mm\noindent\makebox[\textwidth/$number_of_columns][b]{\hrulefill} \end{document}';
 2086:     return $result;
 2087: }
 2088: 
 2089: #
 2090: #  Map from helper layout style to the book/album:
 2091: #
 2092: sub map_laystyle {
 2093:     my ($laystyle) = @_;
 2094:     if ($laystyle eq 'L') {
 2095: 	$laystyle='album';
 2096:     } else {
 2097: 	$laystyle='book';
 2098:     }
 2099:     return $laystyle;
 2100: }
 2101: 
 2102: sub print_page_in_course {
 2103:     my ($helper, $rparmhash, $currentURL, $resources) = @_;
 2104: 
 2105:     my %parmhash       = %$rparmhash;
 2106:     my @page_resources = @$resources;
 2107:     my $mode = $helper->{'VARS'}->{'LATEX_TYPE'};
 2108:     my $symb = $helper->{'VARS'}->{'symb'};
 2109: 
 2110: 
 2111:     my $format_from_helper = $helper->{'VARS'}->{'FORMAT'};
 2112: 
 2113: 
 2114:     my @temporary_array=split /\|/,$format_from_helper;
 2115:     my ($laystyle,$numberofcolumns,$papersize,$pdfFormFields)=@temporary_array;
 2116:     $laystyle = &map_laystyle($laystyle);
 2117:     my ($textwidth,$textheight,$oddoffset,$evenoffset) = &page_format($papersize,$laystyle,
 2118: 								      $numberofcolumns);
 2119:     my $LaTeXwidth=&recalcto_mm($textwidth); 
 2120: 
 2121: 
 2122:     if ($mode ne '') {$mode='\\'.$mode}
 2123:     my $result   =    &print_latex_header($mode);
 2124:     if ($currentURL=~m|^(/adm/wrapper/)?ext/|) {
 2125: 	$currentURL=~s|^(/adm/wrapper/)?ext/|http://|;
 2126: 	my $title=&Apache::lonnet::gettitle($symb);
 2127: 	$title = &Apache::lonxml::latex_special_symbols($title);
 2128:     } else {
 2129:         my $esc_currentURL= $currentURL;
 2130:         $esc_currentURL =~ s/_/\\_/g;
 2131: 	$result.=$esc_currentURL;
 2132:     }
 2133:     $result .= '\\\\';
 2134: 
 2135:     if ($helper->{'VARS'}->{'style_file'}=~/\w/) {
 2136: 	&Apache::lonnet::appenv({'construct.style' =>
 2137: 				$helper->{'VARS'}->{'style_file'}});
 2138:     } elsif ($env{'construct.style'}) {
 2139: 	&Apache::lonnet::delenv('construct.style');
 2140:     }
 2141: 
 2142:     # First is the overall page description.  This is then followed by the 
 2143:     # components of the page. Each of which must be printed independently.
 2144:     my $the_page = shift(@page_resources); 
 2145: 
 2146: 
 2147:     foreach my $resource (@page_resources) {
 2148: 	my $resource_src   = $resource->src(); # Essentially the URL of the resource.
 2149: 	$result           .= $resource->title() . '\\\\';
 2150: 
 2151: 	# Recurse if a .page:
 2152: 
 2153: 	if ($resource_src =~ /.page$/i) {
 2154: 	    my $navmap         = Apache::lonnavmaps::navmap->new();
 2155: 	    my @page_resources = $navmap->retrieveResources($resource_src);
 2156: 	    $result           .= &print_page_in_course($helper, $rparmhash, 
 2157: 						       $resource_src, \@page_resources);
 2158:         } elsif ($resource->ext()) {
 2159:             $result .= &unsupported($currentURL,$mode,$symb);
 2160: 	}
 2161: 	# these resources go through the XML transformer:
 2162: 
 2163: 	elsif ($resource_src =~ /\.(problem|exam|quiz|assess|survey|form|library|xml|html|htm|xhtml|xhtm)$/)  {
 2164: 
 2165: 	    my $urlp = &Apache::lonnet::clutter($resource_src);
 2166: 
 2167: 	    my %form;
 2168: 	    my %moreenv;
 2169: 
 2170: 	    &Apache::lonxml::remember_problem_counter();
 2171: 	    $moreenv{'request.filename'}=$urlp;
 2172: 	    if ($helper->{'VARS'}->{'probstatus'} eq 'exam') {$form{'problemtype'}='exam';}
 2173: 
 2174: 	    $form{'grade_target'}  = 'tex';
 2175: 	    $form{'textwidth'}    = &get_textwidth($helper, $LaTeXwidth);
 2176: 	    $form{'pdfFormFields'} = $pdfFormFields; # 
 2177: 	    $form{'showallfoils'} = $helper->{'VARS'}->{'showallfoils'};    
 2178: 	    
 2179: 	    $form{'problem_split'}=$parmhash{'problem_stream_switch'};
 2180: 	    $form{'suppress_tries'}=$parmhash{'suppress_tries'};
 2181: 	    $form{'latex_type'}=$helper->{'VARS'}->{'LATEX_TYPE'};
 2182: 	    $form{'print_discussions'}=$helper->{'VARS'}->{'PRINT_DISCUSSIONS'};
 2183: 	    $form{'print_annotations'}=$helper->{'VARS'}->{'PRINT_ANNOTATIONS'};
 2184: 	    if (($helper->{'VARS'}->{'PRINT_DISCUSSIONS'} eq 'yes') ||
 2185: 		($helper->{'VARS'}->{'PRINT_ANNOTATIONS'} eq 'yes')) {
 2186: 		$form{'problem_split'}='yes';
 2187: 	    }
 2188: 	    my $rndseed = time;
 2189: 	    if ($helper->{'VARS'}->{'curseed'}) {
 2190: 		$rndseed=$helper->{'VARS'}->{'curseed'};
 2191: 	    }
 2192: 	    $form{'rndseed'}=$rndseed;
 2193: 	    &Apache::lonnet::appenv(\%moreenv);
 2194: 	    
 2195: 	    &Apache::lonxml::clear_problem_counter();
 2196: 
 2197: 	    my $texversion = &ssi_with_retries($urlp, $ssi_retry_count, %form);
 2198: 
 2199: 
 2200: 	    # current document with answers.. no need to encap in minipage
 2201: 	    #  since there's only one answer.
 2202: 
 2203: 	    if(($helper->{'VARS'}->{'ANSWER_TYPE'} eq 'no') ||
 2204: 	       ($helper->{'VARS'}->{'ANSWER_TYPE'} eq 'only')) {
 2205: 		my %answerform = %form;
 2206: 
 2207: 
 2208: 		$answerform{'problem_split'}=$parmhash{'problem_stream_switch'};
 2209: 		$answerform{'grade_target'}='answer';
 2210: 		$answerform{'answer_output_mode'}='tex';
 2211: 		$answerform{'rndseed'}=$rndseed;
 2212:                 if ($helper->{'VARS'}->{'probstatus'} eq 'exam') {
 2213: 		    $answerform{'problemtype'}='exam';
 2214: 		}
 2215: 		$resources_printed .= $urlp.':';
 2216: 		my $answer=&ssi_with_retries($urlp,$ssi_retry_count, %answerform);
 2217: 
 2218: 		if ($helper->{'VARS'}->{'ANSWER_TYPE'} eq 'no') {
 2219: 		    $texversion=~s/(\\keephidden\{ENDOFPROBLEM})/$answer$1/;
 2220: 		} else {
 2221: 		    $texversion= &print_latex_header($helper->{'VARS'}->{'LATEX_TYPE'});
 2222: 		    if ($helper->{'VARS'}->{'construction'} ne '1') {
 2223: 			my $title = &Apache::lonnet::gettitle($helper->{'VARS'}->{'symb'});
 2224: 			$title = &Apache::lonxml::latex_special_symbols($title);
 2225: 			$texversion.='\vskip 0 mm \noindent\textbf{'.$title.'}\vskip 0 mm ';
 2226: 			$texversion.=&path_to_problem($urlp,$LaTeXwidth);
 2227: 		    } else {
 2228: 			$texversion.='\vskip 0 mm \noindent\textbf{'.
 2229:                         &mt("Printing from Authoring Space: No Title").'}\vskip 0 mm ';
 2230: 			$texversion.=&path_to_problem($urlp,$LaTeXwidth);
 2231: 		    }
 2232: 		    $texversion.='\vskip 1 mm '.$answer.'\end{document}';
 2233: 		}
 2234: 
 2235: 
 2236: 		
 2237: 
 2238: 	    
 2239: 	    }
 2240: 	    # Print annotations.
 2241: 
 2242: 
 2243: 	    if ($helper->{'VARS'}->{'PRINT_ANNOTATIONS'} eq 'yes') {
 2244: 		my $annotation .= &annotate($currentURL);
 2245: 		$texversion =~ s/(\\keephidden\{ENDOFPROBLEM})/$annotation$1/;
 2246: 	    }
 2247: 	    
 2248: 	    if ($helper->{'VARS'}->{'TABLE_INDEX'} eq 'yes') {
 2249: 		$texversion=&IndexCreation($texversion,$currentURL);
 2250: 	    }
 2251: 	    if ($helper->{'VARS'}->{'CONSTR_RESOURSE_URL'} eq 'yes') {
 2252: 		$texversion=~s/(\\addcontentsline\{toc\}\{subsection\}\{[^\}]*\})/$1 URL: \\verb|$currentURL| \\strut\\\\\\strut /;
 2253: 
 2254: 	    }
 2255: 	    $texversion = &latex_header_footer_remove($texversion);
 2256: 
 2257: 	    # the first remaining line is a comment from londefdef the second
 2258: 	    # line  seems to be an extraneous \vskip 1mm \\\\ :
 2259:             # (imperfect removal from header_footer_remove?
 2260: 
 2261: 	    $texversion =~ s/\\vskip 1mm \\\\\\\\//;
 2262: 
 2263: 	    $result .= $texversion;
 2264: 	    if ($currentURL=~m/\.page\s*$/) {
 2265: 		($result,$numberofcolumns) = &page_cleanup($result);
 2266: 	    }
 2267: 	}
 2268:     }
 2269: 
 2270:     $result.= '\vskip 0.5mm\noindent\makebox[\textwidth/$number_of_columns][b]{\hrulefill} \end{document}';
 2271:     return $result;
 2272: }
 2273: 
 2274: 
 2275: #
 2276: # List of recently generated print files
 2277: #
 2278: sub recently_generated {
 2279:     my ($prtspool) = @_;
 2280:     my $output;
 2281:     my $zip_result;
 2282:     my $pdf_result;
 2283:     opendir(DIR,$prtspool);
 2284: 
 2285:     my @files = 
 2286: 	grep(/^$env{'user.name'}_$env{'user.domain'}_printout_(\d+)_.*\.(pdf|zip)$/,readdir(DIR));
 2287:     closedir(DIR);
 2288: 
 2289:     @files = sort {
 2290: 	my ($actime) = (stat($prtspool.'/'.$a))[10];
 2291: 	my ($bctime) = (stat($prtspool.'/'.$b))[10];
 2292: 	return $bctime <=> $actime;
 2293:     } (@files);
 2294: 
 2295:     foreach my $filename (@files) {
 2296: 	my ($ext) = ($filename =~ m/(pdf|zip)$/);
 2297: 	my ($cdev,$cino,$cmode,$cnlink,
 2298: 	    $cuid,$cgid,$crdev,$csize,
 2299: 	    $catime,$cmtime,$cctime,
 2300: 	    $cblksize,$cblocks)=stat($prtspool.'/'.$filename);
 2301:         my $ext_text = 'pdf' ? &mt('PDF File'):&mt('Zip File');
 2302: 	my $result=&Apache::loncommon::start_data_table_row()
 2303:                   .'<td>'
 2304:                   .'<a href="/prtspool/'.$filename.'">'.$ext_text.'</a>'
 2305:                   .'</td>'
 2306:                   .'<td>'.&Apache::lonlocal::locallocaltime($cctime).'</td>'
 2307:                   .'<td align="right">'.$csize.'</td>'
 2308:                   .&Apache::loncommon::end_data_table_row();
 2309: 	if ($ext eq 'pdf') { $pdf_result .= $result; }
 2310: 	if ($ext eq 'zip') { $zip_result .= $result; }
 2311:     }
 2312:     if ($zip_result || $pdf_result) {
 2313:         $output ='<hr />';
 2314:     }
 2315:     if ($zip_result) {
 2316: 	$output .='<h3>'.&mt('Recently generated printout zip files')."</h3>\n"
 2317:                   .&Apache::loncommon::start_data_table()
 2318:                   .&Apache::loncommon::start_data_table_header_row()
 2319:                   .'<th>'.&mt('Download').'</th>'
 2320:                   .'<th>'.&mt('Creation Date').'</th>'
 2321:                   .'<th>'.&mt('File Size (Bytes)').'</th>'
 2322:                   .&Apache::loncommon::end_data_table_header_row()
 2323:                   .$zip_result
 2324:                   .&Apache::loncommon::end_data_table();
 2325:     }
 2326:     if ($pdf_result) {
 2327: 	$output .='<h3>'.&mt('Recently generated printouts')."</h3>\n"
 2328:                   .&Apache::loncommon::start_data_table()
 2329:                   .&Apache::loncommon::start_data_table_header_row()
 2330:                   .'<th>'.&mt('Download').'</th>'
 2331:                   .'<th>'.&mt('Creation Date').'</th>'
 2332:                   .'<th>'.&mt('File Size (Bytes)').'</th>'
 2333:                   .&Apache::loncommon::end_data_table_header_row()
 2334:                   .$pdf_result
 2335:                   .&Apache::loncommon::end_data_table();
 2336:     }
 2337:     return $output;
 2338: }
 2339: 
 2340: #
 2341: #   Retrieve the hash of page breaks.
 2342: #
 2343: #  Inputs:
 2344: #    helper   - reference to helper object.
 2345: #  Outputs
 2346: #    A reference to a page break hash.
 2347: #
 2348: #
 2349: # use Data::Dumper;
 2350: # sub dump_helper_vars {
 2351: #    my ($helper) = @_;
 2352: #    my $helpervars = Dumper($helper->{'VARS'});
 2353: #    &Apache::lonnet::logthis("Dump of helper vars:\n $helpervars");
 2354: #}
 2355: 
 2356: sub get_page_breaks  {
 2357:     my ($helper) = @_;
 2358:     my %page_breaks;
 2359: 
 2360:     foreach my $break (split /\|\|\|/, $helper->{'VARS'}->{'FINISHPAGE'}) {
 2361: 	$page_breaks{$break} = 1;
 2362:     }
 2363:     return %page_breaks;
 2364: }
 2365: # 
 2366: #   Returns text to insert for any extra vskip prior to the resource.
 2367: #   Parameters:
 2368: #     helper   - Reference to the helper object driving the printout.
 2369: #     resource - Identifies the resource about to be printed.
 2370: #
 2371: #   This is done as follows:
 2372: #    POSSIBLE_RESOURCES has the list of possible resources.
 2373: #    EXTRASPACE         has the list of extra space values.
 2374: #    EXTRASPACE_UNITS   is the set of resources for which the units are
 2375: #                       mm. All others are 'in'.
 2376: #    
 2377: #    The resource is found in the POSSIBLE_RESOURCES to get the index
 2378: #    of the EXTRASPACE value.
 2379: #
 2380: #   In order to speed this up for lengthy printouts, the first time,
 2381: #   POSSIBLE_RESOURCES is turned into a look up hash and
 2382: #   EXTRASPACE is turned into an array.
 2383: #
 2384: 
 2385: 
 2386: my %possible_resources;
 2387: my %extraspace_mm;
 2388: my @extraspace;
 2389: my $skips_loaded       = 0;
 2390: 
 2391: #  Function to load the skips hash and array
 2392: 
 2393: sub load_skips {
 2394: 
 2395:     my ($helper)  = @_;
 2396: 
 2397:     #  If this is the first time, unrap the resources and extra spaces:
 2398: 
 2399:     if (!$skips_loaded) {
 2400: 	@extraspace = (split(/\|\|\|/, $helper->{'VARS'}->{'EXTRASPACE'}));
 2401: 	my @resource_list = (split(/\|\|\|/, $helper->{'VARS'}->{'POSSIBLE_RESOURCES'}));
 2402: 	my $i = 0;
 2403: 	foreach my $resource (@resource_list) {
 2404: 	    $possible_resources{$resource} = $i;
 2405: 	    $i++;
 2406: 	}
 2407: 	foreach my $mm_resource (split(/\|\|\|/, $helper->{'VARS'}->{'EXTRASPACE_UNITS'})) {
 2408: 	    $extraspace_mm{$mm_resource} = 1;
 2409: 	}
 2410: 	$skips_loaded = 1;
 2411:     }
 2412: }
 2413: 
 2414: sub get_extra_vspaces {
 2415:     my ($helper, $resource) = @_;
 2416: 
 2417:     &load_skips($helper);
 2418: 
 2419:     #  Lookup the resource in the possible resources hash.. that is the index
 2420:     # into the extraspace array that gives us either an empty string or
 2421:     # the number of mm to skip:
 2422: 
 2423:     my $index = $possible_resources{$resource};
 2424:     my $skip  = $extraspace[$index];
 2425: 
 2426:     my $result = '';
 2427:     if ($skip ne '') {
 2428: 	my $units = 'in';
 2429: 	if (defined($extraspace_mm{$resource})) {
 2430: 	    $units = 'mm';
 2431: 	}
 2432: 	$result = '\vskip '.$skip.' '.$units;
 2433:     }
 2434: 
 2435: 	
 2436:     return $result;
 2437: 
 2438: 
 2439: }
 2440: 
 2441: #
 2442: #  The resource chooser part of the helper needs more than just
 2443: #  the value of the extraspaces var to recover the value into a text
 2444: #  field option.  This sub produces the required format for the saved var:
 2445: #  specifically 
 2446: #    ||| separated fields of the form resourcename=value
 2447: #
 2448: #  Parameters:
 2449: #    $helper     - Refers to the helper we are configuring
 2450: #  Implicit input:
 2451: #     $helper->{'VARS'}->{'EXTRASPACE'}  - the spaces helper var has the text field
 2452: #                                          value.
 2453: #     $helper->{'VARS'}->{'EXTRASPACE_UNITS'} - units for the skips (checkboxes).
 2454: #     $helper->{'VARS'}->{'POSSIBLE_RESOURCES'}  - has the list of resources. |||
 2455: #                                          separated of course.
 2456: #  Implicit outputs:
 2457: #     $env{'form.extraspace'}
 2458: #     $env{'form.extraspace_units'}
 2459: #
 2460: sub set_form_extraspace {
 2461:     my ($helper) = @_;
 2462: 
 2463:     # the most convenient way to do this is to drive from the skips arrays/hash.
 2464:     # may not be the fastest, but this is once per print request so it's not so
 2465:     # speed critical:
 2466: 
 2467:     &load_skips($helper);
 2468: 
 2469:     my $result = '';
 2470: 
 2471:     foreach my $resource (keys(%possible_resources)) {
 2472: 	my $vskip = $extraspace[$possible_resources{$resource}];
 2473: 	$result  .= $resource .'=' . $vskip . '|||';
 2474:     }
 2475: 
 2476:     $env{'form.extraspace'}  = $result;
 2477:     $env{'form.extraspace_units'} = $helper->{'VARS'}->{'EXTRASPACE_UNITS'};
 2478:     return $result;
 2479:     
 2480: }
 2481: 
 2482: #  Output a sequence (recursively if neeed)
 2483: #  from construction space.
 2484: # Parameters:
 2485: #    url     = URL of the sequence to print.
 2486: #    helper  - Reference to the helper hash.
 2487: #    form    - Copy of the format hash.
 2488: #    LaTeXWidth
 2489: # Returns:
 2490: #   Text to add to the printout.
 2491: #   NOTE if the first element of the outermost sequence
 2492: #   is itself a sequence, the outermost caller may need to
 2493: #   prefix the latex with the page headers stuff.
 2494: #
 2495: sub print_construction_sequence {
 2496:     my ($currentURL, $helper, %form, $LaTeXwidth) = @_;
 2497: 
 2498:     my $result;
 2499:     my $rndseed=time;
 2500:     if ($helper->{'VARS'}->{'curseed'}) {
 2501: 	$rndseed=$helper->{'VARS'}->{'curseed'};
 2502:     }
 2503:     my $errtext=&LONCAPA::map::mapread(&Apache::lonnet::filelocation('',$currentURL));
 2504: 
 2505:     # 
 2506:     #  These make this all support recursing for subsequences.
 2507:     #
 2508:     my @order    = @LONCAPA::map::order;
 2509:     my @resources = @LONCAPA::map::resources; 
 2510: 
 2511:     for (my $member=0;$member<=$#order;$member++) {
 2512: 	$resources[$order[$member]]=~/^([^:]*):([^:]*):/;
 2513: 	my $urlp=$2;
 2514: 	if ($urlp=~/\.(problem|exam|quiz|assess|survey|form|library|xml|html|htm|xhtml|xhtm)$/) {
 2515: 	    my $texversion='';
 2516: 	    if ($helper->{'VARS'}->{'ANSWER_TYPE'} ne 'only') {
 2517: 		$form{'problem_split'}=$parmhash{'problem_stream_switch'};
 2518: 		$form{'suppress_tries'}=$parmhash{'suppress_tries'};
 2519: 		$form{'latex_type'}=$helper->{'VARS'}->{'LATEX_TYPE'};
 2520: 		$form{'rndseed'}=$rndseed;
 2521: 		$resources_printed .=$urlp.':';
 2522: 		$texversion=&ssi_with_retries($urlp, $ssi_retry_count, %form);
 2523: 	    }
 2524: 	    if((($helper->{'VARS'}->{'ANSWER_TYPE'} eq 'no') ||
 2525: 		($helper->{'VARS'}->{'ANSWER_TYPE'} eq 'only')) && 
 2526: 	       ($urlp=~/$LONCAPA::assess_page_re/)) {
 2527: 		#  Don't permanently modify %$form...
 2528: 		my %answerform = %form;
 2529: 		$answerform{'grade_target'}='answer';
 2530: 		$answerform{'answer_output_mode'}='tex';
 2531: 		$answerform{'rndseed'}=$rndseed;
 2532: 		$answerform{'problem_split'}=$parmhash{'problem_stream_switch'};
 2533: 		if ($urlp=~/\/res\//) {$env{'request.state'}='published';}
 2534: 		$resources_printed .= $urlp.':';
 2535: 		my $answer=&ssi_with_retries($urlp, $ssi_retry_count, %answerform);
 2536: 		if ($helper->{'VARS'}->{'ANSWER_TYPE'} eq 'no') {
 2537: 		    $texversion=~s/(\\keephidden\{ENDOFPROBLEM})/$answer$1/;
 2538: 		} else {
 2539: 		    # If necessary, encapsulate answer in minipage:
 2540: 		    
 2541: 		    $texversion=&print_latex_header($helper->{'VARS'}->{'LATEX_TYPE'});
 2542: 		    my $title = &Apache::lonnet::gettitle($helper->{'VARS'}->{'symb'});
 2543: 		    $title = &Apache::lonxml::latex_special_symbols($title);
 2544: 		    my $body ='\vskip 0 mm \noindent\textbf{'.$title.'}\vskip 0 mm ';
 2545: 		    $body.=&path_to_problem($urlp,$LaTeXwidth);
 2546: 		    $body.='\vskip 1 mm '.$answer.'\end{document}';
 2547: 		    $body = &encapsulate_minipage($body);
 2548: 		    $texversion.=$body;
 2549: 		}
 2550: 	    }
 2551: 	    $texversion = &latex_header_footer_remove($texversion);
 2552: 
 2553: 	    if ($helper->{'VARS'}->{'TABLE_INDEX'} eq 'yes') {
 2554: 		$texversion=&IndexCreation($texversion,$urlp);
 2555: 	    }
 2556: 	    if ($helper->{'VARS'}->{'CONSTR_RESOURSE_URL'} eq 'yes') {
 2557: 		$texversion=~s/(\\addcontentsline\{toc\}\{subsection\}\{[^\}]*\})/$1 URL: \\verb|$urlp| \\strut\\\\\\strut /;
 2558: 	    }
 2559: 	    $result.=$texversion;
 2560: 
 2561: 	} elsif ($urlp=~/\.(sequence|page)$/) {
 2562:  
 2563: 	    # header:
 2564: 
 2565: 	    $result.='\strut\newline\noindent Sequence/page '.$urlp.'\strut\newline\noindent\makebox[\textwidth/$number_of_columns][b]{\hrulefill}\newline\noindent ';
 2566: 
 2567: 	    # IF sequence, recurse:
 2568: 	    
 2569: 	    if ($urlp =~ /\.sequence$/) {
 2570: 		$result .= &print_construction_sequence($urlp, 
 2571: 							$helper, %form, 
 2572: 							$LaTeXwidth);
 2573: 	    }
 2574: 	}
 2575: 	elsif ($urlp =~ /\.pdf$/i) {
 2576: 	    my $texversion;
 2577: 	    if ($member != 0) {
 2578: 		$texversion .= '\cleardoublepage';
 2579: 	    }
 2580: 
 2581: 	    $texversion .= &include_pdf($urlp);
 2582: 	    $texversion = &latex_header_footer_remove($texversion);
 2583: 	    if ($member != $#order) {
 2584: 		$texversion .= '\\ \cleardoublepage';
 2585: 	    }
 2586: 	    
 2587: 	    $result .= $texversion;
 2588: 	}
 2589:     }
 2590:     if ($helper->{VARS}->{'construction'} eq '1') {$result=~s/(\\begin\{document})/$1 \\fbox\{RANDOM SEED IS $rndseed\} /;}
 2591:     return $result;
 2592: }
 2593: 
 2594: #
 2595: #  Top level for generating print output.
 2596: #
 2597: #  May call print_resources if multiple resources will be printed.
 2598: #
 2599: #  The main driver is $selectionmade which reflects the type of print out
 2600: #  requested:
 2601: #   Value    Print type:
 2602: #   1        Print resource that's being looked at.
 2603: #   2        Print problems in a map or in a page.
 2604: #   3        Print pages in a map or resources in a page.
 2605: #   4        Print all problems  or all resources.
 2606: #   5        Print problems for seleted students.
 2607: #   6        Print selected problems from a folder.
 2608: #   7        Print print selected resources from some scope.
 2609: #   8        Print resources for selected students.
 2610: #
 2611: #BZ 5209
 2612: #   2        map_incomplete_problems_seq Print incomplete problems from the current
 2613: #            folder in student context.
 2614: #   5      map_incomplete_problems_people_seq Print incomplete problems from the
 2615: #            current folder in privileged context.
 2616: #    5      incomplete_problems_selpeople_course Print incomplete problems for
 2617: #            selected people from the entire course.
 2618: #
 2619: #   Item 101 has much the same processing as 8,
 2620: #
 2621: #  Differences:  Item 101, 102 require per-student filtering of the resource
 2622: #  set so that only the incomplete resources are printed.
 2623: #  For item 100, filtering was done at the helper level.
 2624: 
 2625: sub output_data {
 2626: 
 2627:     my ($r,$helper,$rparmhash) = @_;
 2628:     my %parmhash = %$rparmhash;
 2629:     $ssi_error = 0;		# This will be set nonzero by failing ssi's.
 2630:     $resources_printed = '';
 2631:     $font_size = $helper->{'VARS'}->{'fontsize'};
 2632:     my $print_type = $helper->{'VARS'}->{'PRINT_TYPE'}; # Allows textual simplification.
 2633:     my $do_postprocessing = 1;
 2634:     my $js = <<ENDPART;
 2635: <script type="text/javascript">
 2636:     var editbrowser;
 2637:     function openbrowser(formname,elementname,only,omit) {
 2638:         var url = '/res/?';
 2639:         if (editbrowser == null) {
 2640:             url += 'launch=1&';
 2641:         }
 2642:         url += 'catalogmode=interactive&';
 2643:         url += 'mode=parmset&';
 2644:         url += 'form=' + formname + '&';
 2645:         if (only != null) {
 2646:             url += 'only=' + only + '&';
 2647:         } 
 2648:         if (omit != null) {
 2649:             url += 'omit=' + omit + '&';
 2650:         }
 2651:         url += 'element=' + elementname + '';
 2652:         var title = 'Browser';
 2653:         var options = 'scrollbars=1,resizable=1,menubar=0';
 2654:         options += ',width=700,height=600';
 2655:         editbrowser = open(url,title,options,'1');
 2656:         editbrowser.focus();
 2657:     }
 2658: </script>
 2659: ENDPART
 2660: 
 2661: 
 2662:     # Breadcrumbs
 2663:     #FIXME: Choose better/different breadcrumbs?!? Links?
 2664:     my $brcrum = [{'href' => '',
 2665:                    'text' => 'Helper'}, #FIXME: Different origin possible than print out helper?
 2666:                   {'href' => '',
 2667:                    'text' => 'Preparing Printout'}];
 2668: 
 2669:     my $start_page  = &Apache::loncommon::start_page('Preparing Printout',
 2670:                                                      $js,
 2671:                                                      {'bread_crumbs' => $brcrum,});
 2672:     my $msg = &mt('Please stand by while processing your print request, this may take some time ...');
 2673: 
 2674:     $r->print($start_page."\n<p>\n$msg\n</p>\n");
 2675: 
 2676:     # fetch the pagebreaks and store them in the course environment
 2677:     # The page breaks will be pulled into the hash %page_breaks which is
 2678:     # indexed by symb and contains 1's for each break.
 2679: 
 2680:     $env{'form.pagebreaks'}  = $helper->{'VARS'}->{'FINISHPAGE'};
 2681:     &set_form_extraspace($helper);
 2682:     $env{'form.lastprinttype'} = $print_type; 
 2683:     &Apache::loncommon::store_course_settings('print',
 2684: 					      {'pagebreaks'    => 'scalar',
 2685: 					       'extraspace'    => 'scalar',
 2686: 					       'extraspace_units' => 'scalar',
 2687: 					       'lastprinttype' => 'scalar'});
 2688:     my %page_breaks  = &get_page_breaks($helper);
 2689: 
 2690:     my $format_from_helper = $helper->{'VARS'}->{'FORMAT'};
 2691:     my ($result,$selectionmade) = ('','');
 2692:     my $number_of_columns = 1; #used only for pages to determine the width of the cell
 2693:     my @temporary_array=split /\|/,$format_from_helper;
 2694:     my ($laystyle,$numberofcolumns,$papersize,$pdfFormFields)=@temporary_array;
 2695: 
 2696:     $laystyle = &map_laystyle($laystyle);
 2697:     my ($textwidth,$textheight,$oddoffset,$evenoffset) = &page_format($papersize,$laystyle,$numberofcolumns);
 2698:     my $assignment =  $env{'form.assignment'};
 2699:     my $LaTeXwidth=&recalcto_mm($textwidth); 
 2700:     my @print_array=();
 2701:     my @student_names=();
 2702: 
 2703:      
 2704:     #  Common settings for the %form has:
 2705:     # In some cases these settings get overriddent by specific cases, but the
 2706:     # settings are common enough to make it worthwhile factoring them out
 2707:     # here.
 2708:     #
 2709:     my %form;
 2710:     $form{'grade_target'} = 'tex';
 2711:     $form{'textwidth'}    = &get_textwidth($helper, $LaTeXwidth);
 2712:     $form{'pdfFormFields'} = $pdfFormFields;
 2713: 
 2714:     # If form.showallfoils is set, then request all foils be shown:
 2715:     # privilege will be enforced both by not allowing the 
 2716:     # check box selecting this option to be presnt unless it's ok,
 2717:     # and by lonresponse's priv. check.
 2718:     # The if is here because lonresponse.pm only cares that
 2719:     # showallfoils is defined, not what the value is.
 2720: 
 2721:     if ($helper->{'VARS'}->{'showallfoils'} eq "1") { 
 2722: 	$form{'showallfoils'} = $helper->{'VARS'}->{'showallfoils'};
 2723:     }
 2724:     
 2725:     if ($helper->{'VARS'}->{'style_file'}=~/\w/) {
 2726: 	&Apache::lonnet::appenv({'construct.style' =>
 2727: 				$helper->{'VARS'}->{'style_file'}});
 2728:     } elsif ($env{'construct.style'}) {
 2729: 	&Apache::lonnet::delenv('construct.style');
 2730:     }
 2731: 
 2732:     if ($print_type eq 'current_document') {
 2733:       #-- single document - problem, page, html, xml, ...
 2734: 	my ($currentURL,$cleanURL);
 2735: 
 2736: 	if ($helper->{'VARS'}->{'construction'} ne '1') {
 2737:             #prints published resource
 2738: 	    $currentURL=$helper->{'VARS'}->{'postdata'};
 2739: 	    $cleanURL=&Apache::lonenc::check_decrypt($currentURL);
 2740: 	} else {
 2741: 
 2742:             #prints resource from the construction space
 2743: 	    $currentURL=$helper->{'VARS'}->{'filename'};
 2744: 	    $cleanURL=$currentURL;
 2745: 	}
 2746: 	$selectionmade = 1;
 2747: 
 2748: 	if ($cleanURL!~m|^/adm/|
 2749: 	    && $cleanURL=~/\.(problem|exam|quiz|assess|survey|form|library|xml|html|htm|xhtml|xhtm)$/) {
 2750: 	    my $rndseed=time;
 2751: 	    my $texversion='';
 2752: 	    if ($helper->{'VARS'}->{'ANSWER_TYPE'} ne 'only') {
 2753: 		my %moreenv;
 2754: 		$moreenv{'request.filename'}=$cleanURL;
 2755:                 if ($helper->{'VARS'}->{'probstatus'} eq 'exam') {$form{'problemtype'}='exam';}
 2756: 		$form{'problem_split'}=$parmhash{'problem_stream_switch'};
 2757: 		$form{'suppress_tries'}=$parmhash{'suppress_tries'};
 2758: 		$form{'latex_type'}=$helper->{'VARS'}->{'LATEX_TYPE'};
 2759: 		$form{'print_discussions'}=$helper->{'VARS'}->{'PRINT_DISCUSSIONS'};
 2760: 		$form{'print_annotations'}=$helper->{'VARS'}->{'PRINT_ANNOTATIONS'};
 2761: 		if (($helper->{'VARS'}->{'PRINT_DISCUSSIONS'} eq 'yes') ||
 2762: 		    ($helper->{'VARS'}->{'PRINT_ANNOTATIONS'} eq 'yes')) {
 2763: 		    $form{'problem_split'}='yes';
 2764: 		}
 2765: 		if ($helper->{'VARS'}->{'curseed'}) {
 2766: 		    $rndseed=$helper->{'VARS'}->{'curseed'};
 2767: 		}
 2768: 		$form{'rndseed'}=$rndseed;
 2769: 		&Apache::lonnet::appenv(\%moreenv);
 2770: 
 2771: 		&Apache::lonxml::clear_problem_counter();
 2772: 
 2773: 		$resources_printed .= $currentURL.':';
 2774: 		$texversion.=&ssi_with_retries($currentURL,$ssi_retry_count, %form);
 2775: 
 2776: 		#  Add annotations if required:
 2777: 	    
 2778: 		&Apache::lonxml::clear_problem_counter();
 2779: 
 2780: 		&Apache::lonnet::delenv('request.filename');
 2781: 	    }
 2782: 	    # current document with answers.. no need to encap in minipage
 2783: 	    #  since there's only one answer.
 2784: 
 2785: 	    if(($helper->{'VARS'}->{'ANSWER_TYPE'} eq 'no') ||
 2786: 	       ($helper->{'VARS'}->{'ANSWER_TYPE'} eq 'only')) {
 2787: 
 2788: 		$form{'problem_split'}=$parmhash{'problem_stream_switch'};
 2789: 		$form{'grade_target'}='answer';
 2790: 		$form{'answer_output_mode'}='tex';
 2791: 		$form{'rndseed'}=$rndseed;
 2792:                 if ($helper->{'VARS'}->{'probstatus'} eq 'exam') {
 2793: 		    $form{'problemtype'}='exam';
 2794: 		}
 2795: 		$resources_printed .= $currentURL.':';
 2796: 		my $answer=&ssi_with_retries($currentURL,$ssi_retry_count, %form);
 2797: 		
 2798: 
 2799: 		if ($helper->{'VARS'}->{'ANSWER_TYPE'} eq 'no') {
 2800: 		    $texversion=~s/(\\keephidden\{ENDOFPROBLEM})/$answer$1/;
 2801: 		} else {
 2802: 		    $texversion=&print_latex_header($helper->{'VARS'}->{'LATEX_TYPE'});
 2803: 		    if ($helper->{'VARS'}->{'construction'} ne '1') {
 2804: 			my $title = &Apache::lonnet::gettitle($helper->{'VARS'}->{'symb'});
 2805: 			$title = &Apache::lonxml::latex_special_symbols($title);
 2806: 			$texversion.='\vskip 0 mm \noindent\textbf{'.$title.'}\vskip 0 mm ';
 2807: 			$texversion.=&path_to_problem($cleanURL,$LaTeXwidth);
 2808: 		    } else {
 2809: 			$texversion.='\vskip 0 mm \noindent\textbf{'.
 2810:                         &mt("Printing from Authoring Space: No Title").'}\vskip 0 mm ';
 2811: 
 2812: 			$texversion.=&path_to_problem($cleanURL,$LaTeXwidth);
 2813: 		    }
 2814: 		    $texversion.='\vskip 1 mm '.$answer.'\end{document}';
 2815: 		}
 2816: 
 2817: 
 2818: 		
 2819: 
 2820: 	    
 2821: 	    }
 2822: 	    # Print annotations.
 2823: 
 2824: 
 2825: 	    if ($helper->{'VARS'}->{'PRINT_ANNOTATIONS'} eq 'yes') {
 2826: 		my $annotation .= &annotate($currentURL);
 2827: 		$texversion =~ s/(\\keephidden\{ENDOFPROBLEM})/$annotation$1/;
 2828: 	    }
 2829: 
 2830: 
 2831: 	    if ($helper->{'VARS'}->{'TABLE_INDEX'} eq 'yes') {
 2832: 		$texversion=&IndexCreation($texversion,$currentURL);
 2833: 	    }
 2834: 	    if ($helper->{'VARS'}->{'CONSTR_RESOURSE_URL'} eq 'yes') {
 2835: 		$texversion=~s/(\\addcontentsline\{toc\}\{subsection\}\{[^\}]*\})/$1 URL: \\verb|$currentURL| \\strut\\\\\\strut /;
 2836: 
 2837: 	    }
 2838: 	    $result .= $texversion;
 2839: 	    if ($currentURL=~m/\.page\s*$/) {
 2840: 		($result,$number_of_columns) = &page_cleanup($result);
 2841: 	    }
 2842:         } elsif ($cleanURL!~m|^/adm/|
 2843: 		 && $currentURL=~/\.(sequence|page)$/ && $helper->{'VARS'}->{'construction'} eq '1') {
 2844: 	    $result .= &print_construction_sequence($currentURL, $helper, %form,
 2845: 						    $LaTeXwidth);
 2846: 	    $result .= '\end{document}';  
 2847: 	    if (!($result =~ /\\begin\{document\}/)) {
 2848: 		$result = &print_latex_header() . $result;
 2849: 	    }
 2850: 	    # End construction space sequence.
 2851: 	} elsif ($cleanURL=~/\/(smppg|syllabus|aboutme|bulletinboard|ext\.tool)$/) { 
 2852: 		$form{'latex_type'}=$helper->{'VARS'}->{'LATEX_TYPE'};
 2853: 		if ($currentURL=~/\/syllabus$/) {$currentURL=~s/\/res//;}
 2854:                 if ($currentURL=~/\/ext\.tool$/) {$currentURL=~s/^\/adm\/wrapper//;}
 2855: 		$resources_printed .= $currentURL.':';
 2856: 		my $texversion = &ssi_with_retries($currentURL, $ssi_retry_count, %form);
 2857: 		if ($helper->{'VARS'}->{'PRINT_ANNOTATIONS'} eq 'yes') {
 2858: 		    my $annotation = &annotate($currentURL);
 2859: 		    $texversion    =~ s/(\\end\{document})/$annotation$1/;
 2860: 		}
 2861: 		$result .= $texversion;
 2862: 	} elsif ($cleanURL =~/\.tex$/) {
 2863: 	    # For this sort of print of a single LaTeX file,
 2864: 	    # We can just print the LaTeX file as it is uninterpreted in any way:
 2865: 	    #
 2866: 
 2867: 	    $result = &fetch_raw_resource($currentURL);
 2868: 	    if ($helper->{'VARS'}->{'PRINT_ANNOTATIONS'} eq 'yes') {
 2869: 		my $annotation = &annotate($currentURL);
 2870: 		$result =~ s/(\\end\{document})/$annotation$1/;
 2871: 	    }
 2872: 
 2873: 	    $do_postprocessing = 0; # Don't massage the result.
 2874: 
 2875: 	} elsif ($cleanURL =~ /\.pdf$/i) {
 2876: 	    $result .= &include_pdf($cleanURL);
 2877: 	    $result .= '\end{document}';
 2878: 	} elsif ($cleanURL =~ /\.page$/i) { #  Print page in non construction space contexts.
 2879: 
 2880: 	    # Determine the set of resources in the map of the page:
 2881: 
 2882: 	    my $navmap         =  Apache::lonnavmaps::navmap->new();
 2883: 	    my @page_resources =  $navmap->retrieveResources($cleanURL);
 2884: 	    $result           .=  &print_page_in_course($helper, $rparmhash,
 2885: 							$cleanURL, \@page_resources);
 2886: 
 2887:        
 2888: 	} else {
 2889: 	    $result.=&unsupported($currentURL,$helper->{'VARS'}->{'LATEX_TYPE'},
 2890: 				  $helper->{'VARS'}->{'symb'});
 2891: 	}
 2892:     } elsif (($print_type eq 'map_problems')          or
 2893: 	     ($print_type eq 'map_problems_in_page')  or
 2894: 	     ($print_type eq 'map_resources_in_page') or
 2895:              ($print_type eq 'map_problems_pages')    or
 2896:              ($print_type eq 'all_problems')          or
 2897: 	     ($print_type eq 'all_resources')         or # BUGBUG
 2898: 	     ($print_type eq 'select_sequences')      or
 2899: 	     ($print_type eq 'map_incomplete_problems_seq')
 2900: 	     ) {
 2901:  
 2902:         #-- produce an output string
 2903: 	if (($print_type eq 'map_problems')                or
 2904: 	    ($print_type eq 'map_incomplete_problems_seq') or
 2905: 	    ($print_type eq 'map_problems_in_page') ) {
 2906: 	    $selectionmade = 2;
 2907: 	} elsif (($print_type eq 'map_problems_pages') or
 2908: 		 ($print_type eq 'map_resources_in_page'))
 2909: 	{
 2910: 	    $selectionmade = 3;
 2911: 	} elsif (($print_type eq 'all_problems') 
 2912: 		 ) {
 2913: 	    $selectionmade = 4;
 2914: 	} elsif ($print_type eq 'all_resources') {  #BUGBUG
 2915: 	    $selectionmade = 4;
 2916: 	} elsif ($print_type eq 'select_sequences') {
 2917: 	    $selectionmade = 7;
 2918: 	}
 2919: 
 2920: 	$form{'problem_split'}=$parmhash{'problem_stream_switch'};
 2921: 	$form{'suppress_tries'}=$parmhash{'suppress_tries'};
 2922: 	$form{'latex_type'}=$helper->{'VARS'}->{'LATEX_TYPE'};
 2923: 	$form{'print_discussions'}=$helper->{'VARS'}->{'PRINT_DISCUSSIONS'};
 2924: 	$form{'print_annotations'} = $helper->{'VARS'}->{'PRINT_ANNOTATIONS'};
 2925: 	if (($helper->{'VARS'}->{'PRINT_DISCUSSIONS'} eq 'yes')   ||
 2926: 	    ($helper->{'VARS'}->{'PRINT_ANNOTATIONS'} eq 'yes') ) {
 2927: 	    $form{'problem_split'}='yes';
 2928: 	}
 2929: 	my $flag_latex_header_remove = 'NO';
 2930: 	my $flag_page_in_sequence = 'NO';
 2931: 	my @master_seq=split /\|\|\|/, $helper->{'VARS'}->{'RESOURCES'};
 2932: 	my $prevassignment='';
 2933: 
 2934: 	&Apache::lonxml::clear_problem_counter();
 2935: 
 2936: 	for (my $i=0;$i<=$#master_seq;$i++) {
 2937: 
 2938: 	    &Apache::lonenc::reset_enc();
 2939: 
 2940: 
 2941: 	    # Note due to document structure, not allowed to put \newpage
 2942: 	    # prior to the first resource
 2943: 
 2944: 	    if (defined $page_breaks{$master_seq[$i]}) {
 2945: 		if($i != 0) {
 2946: 		    $result.="\\newpage\n";
 2947: 		}
 2948: 	    }
 2949: 	    $result .= &get_extra_vspaces($helper, $master_seq[$i]);
 2950: 	    my ($sequence,$middle_thingy,$urlp)=&Apache::lonnet::decode_symb($master_seq[$i]);
 2951: 	    $urlp=&Apache::lonnet::clutter($urlp);
 2952: 	    $form{'symb'}=$master_seq[$i];
 2953: 
 2954: 	    my $assignment=&Apache::lonxml::latex_special_symbols(&Apache::lonnet::gettitle($sequence),'header'); #title of the assignment which contains this problem
 2955: 
 2956: 	    if ($selectionmade==7) {$helper->{VARS}->{'assignment'}=$assignment;}
 2957: 	    if ($i==0) {$prevassignment=$assignment;}
 2958: 	    my $texversion='';
 2959: 	    if ($urlp!~m|^/adm/|
 2960: 		&& $urlp=~/\.(problem|exam|quiz|assess|survey|form|library|page|xml|html|htm|xhtml|xhtm)$/) {
 2961:                 my $extension = $1;
 2962: 		$resources_printed .= $urlp.':';
 2963: 		&Apache::lonxml::remember_problem_counter();
 2964: 		if ($flag_latex_header_remove eq 'NO') {
 2965: 		    $texversion.=&print_latex_header($helper->{'VARS'}->{'LATEX_TYPE'});  # RF
 2966:                     unless (($helper->{'VARS'}->{'ANSWER_TYPE'} eq 'only') ||
 2967:                             (($i==0) &&
 2968:                              (($urlp=~/\.page$/) ||
 2969:                               ($print_type eq 'map_problems_in_page') ||
 2970:                               (($print_type eq 'map_resources_in_page') && ($extension !~ /^x?html?$/))))) {
 2971:                         $flag_latex_header_remove = 'YES';
 2972:                     }
 2973: 		}
 2974: 		$texversion.=&ssi_with_retries($urlp, $ssi_retry_count, %form);
 2975: 		if ($urlp=~/\.page$/) {
 2976: 		    ($texversion,my $number_of_columns_page) = &page_cleanup($texversion);
 2977: 		    if ($number_of_columns_page > $number_of_columns) {$number_of_columns=$number_of_columns_page;} 
 2978: 		    $texversion =~ s/\\end\{document}\d*/\\end{document}/;
 2979: 		    $flag_page_in_sequence = 'YES';
 2980: 		}
 2981: 
 2982: 		if(($helper->{'VARS'}->{'ANSWER_TYPE'} eq 'no') ||
 2983: 		   ($helper->{'VARS'}->{'ANSWER_TYPE'} eq 'only')) {
 2984: 		    #  Don't permanently pervert the %form hash
 2985: 		    my %answerform = %form;
 2986: 		    $answerform{'grade_target'}='answer';
 2987: 		    $answerform{'answer_output_mode'}='tex';
 2988: 		    $resources_printed .= $urlp.':';
 2989: 
 2990: 		    &Apache::lonxml::restore_problem_counter();
 2991: 		    my $answer=&ssi_with_retries($urlp, $ssi_retry_count, %answerform);
 2992:                     if ($urlp =~ /\.page$/) {
 2993:                         $answer =~ s/\\end\{document}(\d*)$//;
 2994:                     }
 2995: 		    if ($helper->{'VARS'}->{'ANSWER_TYPE'} eq 'no') {
 2996:                         if ($urlp =~ /\.page$/) {
 2997:                             my @probs = split(/\\keephidden\{ENDOFPROBLEM}/,$texversion);
 2998:                             my $lastprob = pop(@probs);
 2999:                             $texversion = join('\keephidden{ENDOFPROBLEM}',@probs).
 3000:                             $answer.'\keephidden{ENDOFPROBLEM}'.$lastprob;
 3001:                         } else {
 3002:                             $texversion=~s/(\\keephidden\{ENDOFPROBLEM})/$answer$1/;
 3003:                         }
 3004: 		    } else {
 3005: 			if ($urlp=~/$LONCAPA::assess_page_re/) {
 3006: 			    $texversion=&print_latex_header($helper->{'VARS'}->{'LATEX_TYPE'});
 3007: #			    $texversion =~ s/\\begin\{document}//; # FIXME
 3008: 			    my $title = &Apache::lonnet::gettitle($master_seq[$i]);
 3009: 			    $title = &Apache::lonxml::latex_special_symbols($title);
 3010: 			    my $body ='\vskip 0 mm \noindent\textbf{'.$title.'}\vskip 0 mm ';
 3011: 			    $body   .= &path_to_problem ($urlp,$LaTeXwidth);
 3012: 			    $body   .='\vskip 1 mm '.$answer;
 3013: 			    $body    = &encapsulate_minipage($body);
 3014: 			    $texversion .= $body;
 3015: 			} else {
 3016: 			    $texversion='';
 3017: 			}
 3018: 		    }
 3019: 
 3020: 		}
 3021: 		if ($helper->{'VARS'}->{'PRINT_ANNOTATIONS'} eq 'yes') {
 3022: 		    my $annotation .= &annotate($urlp);
 3023: 		    $texversion =~ s/(\\keephidden\{ENDOFPROBLEM})/$annotation$1/;
 3024: 		}
 3025: 
 3026: 		if ($flag_latex_header_remove ne 'NO') {
 3027: 		    $texversion = &latex_header_footer_remove($texversion);
 3028: 		} else {
 3029: 		    $texversion =~ s/\\end\{document}//;
 3030: 		}
 3031: 		if ($helper->{'VARS'}->{'TABLE_INDEX'} eq 'yes') {
 3032: 		    $texversion=&IndexCreation($texversion,$urlp);
 3033: 		}
 3034: 		if (($selectionmade == 4) and ($assignment ne $prevassignment)) {
 3035: 		    my $name = &get_name();
 3036: 		    my $courseidinfo = &get_course();
 3037: 		    $prevassignment=$assignment;
 3038: 		    my $header_text = $parmhash{'print_header_format'};
 3039: 		    $header_text    = &format_page_header($textwidth, $header_text,
 3040: 							  $assignment, 
 3041: 							  $courseidinfo, 
 3042: 							  $name);
 3043: 		    if ($numberofcolumns eq '1') {
 3044: 			$result .='\newpage \noindent\parbox{\minipagewidth}{\noindent\\lhead{'.$header_text.'}} \vskip 5 mm ';
 3045: 		    } else {
 3046: 			$result .='\newpage \noindent\parbox{\minipagewidth}{\noindent\\fancyhead[LO]{'.$header_text.'}} \vskip 5 mm ';
 3047: 		    }			
 3048: 		}
 3049: 		$result .= $texversion;
 3050: 		$flag_latex_header_remove = 'YES';   
 3051: 	    } elsif ($urlp=~/\/(smppg|syllabus|aboutme|bulletinboard|ext\.tool)$/) { 
 3052: 		$form{'latex_type'}=$helper->{'VARS'}->{'LATEX_TYPE'};
 3053: 		if ($urlp=~/\/syllabus$/) {$urlp=~s/\/res//;}
 3054:                 if ($urlp=~/\/ext\.tool$/) {$urlp=~s/^\/adm\/wrapper//;}
 3055: 		$resources_printed .= $urlp.':';
 3056: 		my $texversion = &ssi_with_retries($urlp, $ssi_retry_count, %form);
 3057: 		if ($helper->{'VARS'}->{'PRINT_ANNOTATIONS'} eq 'yes') {
 3058: 		    my $annotation = &annotate($urlp);
 3059: 		    $texversion =~ s/(\\end\{document)/$annotation$1/;
 3060: 		}
 3061: 
 3062: 		if ($flag_latex_header_remove ne 'NO') {
 3063: 		    $texversion = &latex_header_footer_remove($texversion);
 3064: 		} else {	
 3065: 		    $texversion =~ s/\\end\{document}/\\vskip 0\.5mm\\noindent\\makebox\[\\textwidth\/\$number_of_columns\]\[b\]\{\\hrulefill\}/;
 3066: 		}
 3067: 		$result .= $texversion;
 3068: 		$flag_latex_header_remove = 'YES'; 
 3069: 	    } elsif ($urlp=~ /\.pdf$/i) {
 3070: 		if ($i > 0) {
 3071: 		    $result .= '\cleardoublepage';
 3072: 		}
 3073:                 my $texfrompdf = &include_pdf($urlp);
 3074:                 if ($flag_latex_header_remove ne 'NO') {
 3075:                     $texfrompdf = &latex_header_footer_remove($texfrompdf);
 3076:                 }
 3077:                 $result .= $texfrompdf;
 3078: 		if ($i != $#master_seq) {
 3079: 		    if ($numberofcolumns eq '1') {
 3080: 			$result .= '\newpage';
 3081: 		    } else {
 3082: 			# the \\'s seem to be needed to let LaTeX know there's something
 3083: 			# on the page since LaTeX seems to not like to clear an empty page.
 3084: 			#
 3085: 			$result .= '\\ \cleardoublepage';
 3086: 		    }
 3087: 		}
 3088: 		$flag_latex_header_remove = 'YES';
 3089: 
 3090: 	    } else {
 3091: 		$texversion=&unsupported($urlp,$helper->{'VARS'}->{'LATEX_TYPE'},
 3092: 					 $master_seq[$i]);
 3093: 		if ($flag_latex_header_remove ne 'NO') {
 3094: 		    $texversion = &latex_header_footer_remove($texversion);
 3095: 		} else {
 3096: 		    $texversion =~ s/\\end\{document}//;
 3097: 		}
 3098: 		$result .= $texversion;
 3099: 		$flag_latex_header_remove = 'YES';   
 3100: 	    }
 3101: 	    if (&Apache::loncommon::connection_aborted($r)) { 
 3102: 		last; 
 3103: 	    }
 3104: 	}
 3105: 	&Apache::lonxml::clear_problem_counter();
 3106: 	if ($flag_page_in_sequence eq 'YES') {
 3107: 	    $result =~ s/\\usepackage\{calc}/\\usepackage{calc}\\usepackage{longtable}/;
 3108: 	}	
 3109: 	$result .= '\end{document}';
 3110:      } elsif (($print_type eq 'problems_for_students')           ||
 3111: 	      ($print_type eq 'problems_for_students_from_page') ||
 3112: 	      ($print_type eq 'all_problems_students')           ||
 3113: 	      ($print_type eq 'resources_for_students')          ||
 3114: 	      ($print_type eq 'incomplete_problems_selpeople_course') ||
 3115: 	      ($print_type eq 'map_incomplete_problems_people_seq')){
 3116: 
 3117: 
 3118:      #-- prints assignments for whole class or for selected students  
 3119: 	 my $type;
 3120: 	 if (($print_type eq 'problems_for_students')           ||
 3121: 	     ($print_type eq 'problems_for_students_from_page') ||
 3122: 	     ($print_type eq 'all_problems_students')           ||
 3123: 	     ($print_type eq 'incomplete_problems_selpeople_course') ||
 3124: 	     ($print_type eq 'map_incomplete_problems_people_seq')) {
 3125: 	     $selectionmade=5;
 3126: 	     $type='problems';
 3127: 	 } elsif ($print_type eq 'resources_for_students') {
 3128: 	     $selectionmade=8;
 3129: 	     $type='resources';
 3130: 	 }
 3131: 	 my @students=split /\|\|\|/, $helper->{'VARS'}->{'STUDENTS'};
 3132: 	 #   The normal sort order is by section then by students within the
 3133: 	 #   section. If the helper var student_sort is 1, then the user has elected
 3134: 	 #   to override this and output the students by name.
 3135: 	 #    Each element of the students array is of the form:
 3136: 	 #       username:domain:section:last, first:status
 3137: 	 #    
 3138: 	 #  Note that student sort is not compatible with printing 
 3139: 	 #  1 section per pdf...so that setting overrides.
 3140: 	 #   
 3141: 	 if (($helper->{'VARS'}->{'student_sort'}    eq 1)  && 
 3142: 	     ($helper->{'VARS'}->{'SPLIT_PDFS'} ne "sections")) {
 3143: 	     @students = sort compare_names  @students;
 3144: 	 } else {
 3145: 	     @students = sort compare_sections @students; 
 3146: 	 }
 3147: 	 &adjust_number_to_print($helper);
 3148: 
 3149:          if ($helper->{'VARS'}->{'NUMBER_TO_PRINT'} eq '0' ||
 3150: 	     $helper->{'VARS'}->{'NUMBER_TO_PRINT'} eq 'all' ) {
 3151: 	     $helper->{'VARS'}->{'NUMBER_TO_PRINT'}=$#students+1;
 3152: 	 }
 3153: 	 # If we are splitting on section boundaries, we need 
 3154: 	 # to remember that in split_on_sections and 
 3155: 	 # print all of the students in the list.
 3156: 	 #
 3157: 	 my $split_on_sections = 0;
 3158: 	 if ($helper->{'VARS'}->{'NUMBER_TO_PRINT'} eq 'section') {
 3159: 	     $split_on_sections = 1;
 3160: 	     $helper->{'VARS'}->{'NUMBER_TO_PRINT'} = $#students+1;
 3161: 	 }
 3162: 	 my @master_seq=split /\|\|\|/, $helper->{'VARS'}->{'RESOURCES'};
 3163: 
 3164:          my $map;
 3165:          if ($helper->{VARS}->{'symb'}) {
 3166:              ($map, my $id, my $resource) =
 3167:                  &Apache::lonnet::decode_symb($helper->{VARS}->{'symb'});
 3168:          }
 3169: 
 3170: 	 #loop over students
 3171: 
 3172:  	 my $flag_latex_header_remove = 'NO';
 3173: 	 my %moreenv;
 3174:          $moreenv{'instructor_comments'}='hide';
 3175: 	 $moreenv{'textwidth'}=&get_textwidth($helper,$LaTeXwidth);
 3176: 	 $moreenv{'print_discussions'}=$helper->{'VARS'}->{'PRINT_DISCUSSIONS'};
 3177: 	 $moreenv{'print_annotations'} = $helper->{'VARS'}->{'PRINT_ANNOTATIONS'};
 3178: 	 $moreenv{'problem_split'}    = $parmhash{'problem_stream_switch'};
 3179: 	 $moreenv{'suppress_tries'}   = $parmhash{'suppress_tries'};
 3180: 	 if (($helper->{'VARS'}->{'PRINT_DISCUSSIONS'} eq 'yes')  ||
 3181: 	     ($helper->{'VARS'}->{'PRINT_ANNOTATIONS'} eq 'yes')) {
 3182: 	     $moreenv{'problem_split'}='yes';
 3183: 	 }
 3184: 	 my %prog_state=&Apache::lonhtmlcommon::Create_PrgWin($r,$#students+1);
 3185: 	 my $student_counter=-1;
 3186: 	 my $i = 0;
 3187: 	 my $last_section = (split(/:/,$students[0]))[2];
 3188:          my $nohidemap;
 3189:          if ($perm{'pav'} && $perm{'vgr'}) {
 3190:              $nohidemap = 1;
 3191:          }
 3192: 	 foreach my $person (@students) {
 3193:              my $duefile="/home/httpd/prtspool/$env{'user.name'}_$env{'user.domain'}_printout.due";
 3194: 	     if (-e $duefile) {
 3195: 		 my $temp_file = Apache::File->new('>>'.$duefile);
 3196: 		 print $temp_file "1969\n";
 3197: 	     }
 3198: 	     $student_counter++;
 3199: 	     if ($split_on_sections) {
 3200: 		 my $this_section = (split(/:/,$person))[2];
 3201: 		 if ($this_section ne $last_section) {
 3202: 		     $i++;
 3203: 		     $last_section = $this_section;
 3204: 		 }
 3205: 	     } else {
 3206: 		 $i=int($student_counter/$helper->{'VARS'}{'NUMBER_TO_PRINT'});
 3207: 	     }
 3208: 	     my $actual_seq = master_seq_to_person_seq($map, \@master_seq,
 3209:                                                        $person, undef, $nohidemap);
 3210: 	     my ($output,$fullname, $printed)=&print_resources($r,$helper,
 3211: 						     $person,$type,
 3212: 						     \%moreenv,  $actual_seq,
 3213: 						     $flag_latex_header_remove,
 3214: 						     $LaTeXwidth);
 3215: 	     $resources_printed .= ":";
 3216: 	     $print_array[$i].=$output;
 3217: 	     $student_names[$i].=$person.':'.$fullname.'_END_';
 3218: #	     &Apache::lonhtmlcommon::Increment_PrgWin($r,\%prog_state,&mt('last student').' '.$fullname);
 3219: 	     &Apache::lonhtmlcommon::Increment_PrgWin($r,\%prog_state,'last student');
 3220: 	     $flag_latex_header_remove = 'YES';
 3221: 	     if (&Apache::loncommon::connection_aborted($r)) { last; }
 3222: 	 }
 3223: 	 &Apache::lonhtmlcommon::Close_PrgWin($r,\%prog_state);
 3224: 	 $result .= $print_array[0].'  \end{document}';
 3225:      } elsif (($print_type eq 'problems_for_anon')      ||
 3226: 	      ($print_type eq 'problems_for_anon_page') ||
 3227: 	      ($print_type eq 'resources_for_anon')  ) { 
 3228: 	 my $cdom =$env{'course.'.$env{'request.course.id'}.'.domain'};
 3229: 	 my $cnum =$env{'course.'.$env{'request.course.id'}.'.num'};
 3230: 	 my $num_todo=$helper->{'VARS'}->{'NUMBER_TO_PRINT_TOTAL'};
 3231: 	 my $code_name=$helper->{'VARS'}->{'ANON_CODE_STORAGE_NAME'};
 3232: 	 my $old_name=$helper->{'VARS'}->{'REUSE_OLD_CODES'};
 3233: 	 my $single_code = $helper->{'VARS'}->{'SINGLE_CODE'};
 3234: 	 my $selected_code = $helper->{'VARS'}->{'CODE_SELECTED_FROM_LIST'};
 3235: 	 my $code_option=$helper->{'VARS'}->{'CODE_OPTION'};
 3236:          my @lines = &Apache::grades::get_scantronformat_file();
 3237: 	 my ($code_type,$code_length,$bubbles_per_row)=('letter',6,10);
 3238: 	 foreach my $line (@lines) {
 3239:              chomp($line);
 3240: 	     my ($name,$type,$length,$bubbles_per_item) = 
 3241:                  (split(/:/,$line))[0,2,4,17];
 3242: 	     if ($name eq $code_option) {
 3243: 		 $code_length=$length;
 3244: 		 if ($type eq 'number') { $code_type = 'number'; }
 3245:                  chomp($bubbles_per_item); 
 3246:                  if (($bubbles_per_item ne '') && ($bubbles_per_item > 0)) {
 3247:                      $bubbles_per_row = $bubbles_per_item; 
 3248:                  }
 3249: 	     }
 3250: 	 }
 3251:          my ($randomorder,$randompick,$map);
 3252:          if ($helper->{VARS}{'symb'}) {
 3253:              ($map, my $id, my $resource) =
 3254:                  &Apache::lonnet::decode_symb($helper->{VARS}{'symb'});
 3255:              my $navmap = Apache::lonnavmaps::navmap->new();
 3256:              if (defined($navmap)) {
 3257:                  if ($map) {
 3258:                      my $mapres = $navmap->getResourceByUrl($map);
 3259:                      $randomorder = $mapres->randomorder();
 3260:                      $randompick = $mapres->randompick();
 3261:                  }
 3262:              }
 3263:          }
 3264: 	 my %moreenv = ('textwidth' => &get_textwidth($helper,$LaTeXwidth));
 3265: 	 $moreenv{'problem_split'}    = $parmhash{'problem_stream_switch'};
 3266:          $moreenv{'instructor_comments'}='hide';
 3267:          $moreenv{'bubbles_per_row'} = $bubbles_per_row;
 3268: 	 my $seed=time+($$<<16)+($$);
 3269: 	 my @allcodes;
 3270: 	 if ($old_name) {
 3271: 	     my %result=&Apache::lonnet::get('CODEs',
 3272: 					     [$old_name,"type\0$old_name"],
 3273: 					     $cdom,$cnum);
 3274: 	     $code_type=$result{"type\0$old_name"};
 3275: 	     @allcodes=split(',',$result{$old_name});
 3276: 	     $num_todo=scalar(@allcodes);
 3277: 	 } elsif ($selected_code) { # Selection value is always numeric.
 3278: 	     $num_todo = 1;
 3279: 	     @allcodes = ($selected_code);
 3280: 	 } elsif ($single_code) {
 3281: 
 3282: 	     $num_todo    = 1;	# Unconditionally one code to do.
 3283: 	     # If an alpha code have to convert to numbers so it can be
 3284: 	     # converted back to letters again :-)
 3285: 	     #
 3286: 	     if ($code_type ne 'number') {
 3287: 		 $single_code = &letters_to_num($single_code);
 3288: 	     }
 3289: 	     @allcodes = ($single_code);
 3290: 	 } else {
 3291: 	     my %allcodes;
 3292: 	     srand($seed);
 3293: 	     for (my $i=0;$i<$num_todo;$i++) {
 3294: 		 $moreenv{'CODE'}=&get_CODE(\%allcodes,$i,$seed,$code_length,
 3295: 					    $code_type);
 3296: 	     }
 3297:              $code_name =~ s/^\s+//;
 3298:              $code_name =~ s/\s+$//;
 3299: 	     if ($code_name) {
 3300: 		 &Apache::lonnet::put('CODEs',
 3301: 				      {
 3302: 					$code_name =>join(',',keys(%allcodes)),
 3303: 					"type\0$code_name" => $code_type
 3304: 				      },
 3305: 				      $cdom,$cnum);
 3306: 	     }
 3307: 	     @allcodes=keys(%allcodes);
 3308: 	 }
 3309: 	 my @master_seq=split /\|\|\|/, $helper->{'VARS'}->{'RESOURCES'};
 3310: 	 my ($type) = split(/_/,$print_type);
 3311: 	 &adjust_number_to_print($helper);
 3312: 	 my $number_per_page=$helper->{'VARS'}->{'NUMBER_TO_PRINT'};
 3313: 	 if ($number_per_page eq '0' || $number_per_page eq 'all'
 3314: 	     || $number_per_page eq 'section') {
 3315: 	     $number_per_page=$num_todo > 0 ? $num_todo : 1;
 3316: 	 }
 3317: 	 my $flag_latex_header_remove = 'NO'; 
 3318: 	 my %prog_state=&Apache::lonhtmlcommon::Create_PrgWin($r,$num_todo);
 3319: 	 my $count=0;
 3320:          my $nohidemap;
 3321:          if ($perm{'pav'} && $perm{'vgr'}) {
 3322:              $nohidemap = 1;
 3323:          }
 3324: 	 foreach my $code (sort(@allcodes)) {
 3325: 	     my $file_num=int($count/$number_per_page);
 3326: 	     if ($code_type eq 'number') { 
 3327: 		 $moreenv{'CODE'}=$code;
 3328: 	     } else {
 3329: 		 $moreenv{'CODE'}=&num_to_letters($code);
 3330: 	     }
 3331:              my $actual_seq = \@master_seq;
 3332:              if ($randomorder || $randompick) {
 3333:                  $env{'form.CODE'} = $moreenv{'CODE'};
 3334:                  $actual_seq = master_seq_to_person_seq($map, \@master_seq,
 3335:                                                         undef,
 3336:                                                         $moreenv{'CODE'}, $nohidemap);
 3337:                  delete($env{'form.CODE'});
 3338:              }
 3339: 	     my ($output,$fullname, $printed)=
 3340: 		 &print_resources($r,$helper,'anonymous',$type,\%moreenv,
 3341: 				  $actual_seq,$flag_latex_header_remove,
 3342: 				  $LaTeXwidth);
 3343: 	     $resources_printed .= ":";
 3344: 	     $print_array[$file_num].=$output;
 3345: 	     &Apache::lonhtmlcommon::Increment_PrgWin($r,\%prog_state,
 3346: 				       &mt('last assignment').' '.$fullname);
 3347: 	     $flag_latex_header_remove = 'YES';
 3348: 	     $count++;
 3349: 	     if (&Apache::loncommon::connection_aborted($r)) { last; }
 3350: 	 }
 3351: 	 &Apache::lonhtmlcommon::Close_PrgWin($r,\%prog_state);
 3352: 	 $result .= $print_array[0].'  \end{document}';
 3353:      } elsif ($print_type eq 'problems_from_directory') {      
 3354:     #prints selected problems from the subdirectory 
 3355: 	$selectionmade = 6;
 3356:         my @list_of_files=split /\|\|\|/, $helper->{'VARS'}->{'FILES'};
 3357: 	@list_of_files=sort @list_of_files;
 3358: 	my $flag_latex_header_remove = 'NO'; 
 3359: 	my $rndseed=time;
 3360: 	if ($helper->{'VARS'}->{'curseed'}) {
 3361: 	    $rndseed=$helper->{'VARS'}->{'curseed'};
 3362: 	}
 3363: 	for (my $i=0;$i<=$#list_of_files;$i++) {
 3364: 
 3365: 	    &Apache::lonenc::reset_enc();
 3366: 
 3367: 	    my $urlp = $list_of_files[$i];
 3368: 	    $urlp=~s|//|/|;
 3369: 	    if ($urlp=~/\//) {
 3370: 		$form{'problem_split'}=$parmhash{'problem_stream_switch'};
 3371: 		$form{'rndseed'}=$rndseed;
 3372: 		$urlp =~ s|^$Apache::lonnet::perlvar{'lonDocRoot'}||;
 3373: 		$resources_printed .= $urlp.':';
 3374: 		my $texversion=&ssi_with_retries($urlp, $ssi_retry_count, %form);
 3375: 		if(($helper->{'VARS'}->{'ANSWER_TYPE'} eq 'no') ||
 3376: 		   ($helper->{'VARS'}->{'ANSWER_TYPE'} eq 'only')) {
 3377: 		    #  Don't permanently pervert %form:
 3378: 		    my %answerform = %form;
 3379: 		    $answerform{'grade_target'}='answer';
 3380: 		    $answerform{'answer_output_mode'}='tex';
 3381: 		    $answerform{'latex_type'}=$helper->{'VARS'}->{'LATEX_TYPE'};
 3382: 		    $answerform{'rndseed'}=$rndseed;
 3383: 		    $resources_printed .= $urlp.':';
 3384: 		    my $answer=&ssi_with_retries($urlp, $ssi_retry_count, %answerform);
 3385: 		    if ($helper->{'VARS'}->{'ANSWER_TYPE'} eq 'no') {
 3386: 			$texversion=~s/(\\keephidden\{ENDOFPROBLEM})/$answer$1/;
 3387: 		    } else {
 3388: 			$texversion=&print_latex_header($helper->{'VARS'}->{'LATEX_TYPE'});
 3389: 			if ($helper->{'VARS'}->{'construction'} ne '1') {
 3390: 			    $texversion.='\vskip 0 mm \noindent ';
 3391: 			    $texversion.=&path_to_problem ($urlp,$LaTeXwidth);
 3392: 			} else {
 3393: 			    $texversion.='\vskip 0 mm \noindent\textbf{'.
 3394:                                          &mt("Printing from Authoring Space: No Title").'}\vskip 0 mm ';
 3395: 			    $texversion.=&path_to_problem ($urlp,$LaTeXwidth);
 3396: 			}
 3397: 			$texversion.='\vskip 1 mm '.$answer.'\end{document}';
 3398: 		    }
 3399: 		}
 3400:                 #this chunk is responsible for printing the path to problem
 3401: 
 3402: 		my $newurlp=&path_to_problem($urlp,$LaTeXwidth);
 3403: 		$texversion =~ s/(\\begin\{minipage}\{\\textwidth})/$1 $newurlp/;
 3404: 		if ($flag_latex_header_remove ne 'NO') {
 3405: 		    $texversion = &latex_header_footer_remove($texversion);
 3406: 		} else {
 3407: 		    $texversion =~ s/\\end\{document}//;
 3408: 		}
 3409: 		if ($helper->{'VARS'}->{'TABLE_INDEX'} eq 'yes') {
 3410: 		    $texversion=&IndexCreation($texversion,$urlp);
 3411: 		}
 3412: 		if ($helper->{'VARS'}->{'CONSTR_RESOURSE_URL'} eq 'yes') {
 3413: 		    $texversion=~s/(\\addcontentsline\{toc\}\{subsection\}\{[^\}]*\})/$1 URL: \\verb|$urlp| \\strut\\\\\\strut /;
 3414: 		    
 3415: 		}
 3416: 		$result .= $texversion;
 3417: 	    }
 3418: 	    $flag_latex_header_remove = 'YES';  
 3419: 	}
 3420: 	if ($helper->{VARS}->{'construction'} eq '1') {$result=~s/(\\typeout)/ RANDOM SEED IS $rndseed $1/;}
 3421: 	$result .= '\end{document}';      	
 3422:     }
 3423: #-------------------------------------------------------- corrections for the different page formats
 3424: 
 3425:     # Only post process if that has not been turned off e.g. by a raw latex resource.
 3426: 
 3427:     if ($do_postprocessing) {
 3428: 	$result = &page_format_transformation($papersize,
 3429: 					      $laystyle,$numberofcolumns,
 3430: 					      $print_type,$result,
 3431: 					      $helper->{VARS}->{'assignment'},
 3432: 					      $helper->{'VARS'}->{'TABLE_CONTENTS'},
 3433: 					      $helper->{'VARS'}->{'TABLE_INDEX'},
 3434: 					      $selectionmade);
 3435: 	$result = &latex_corrections($number_of_columns,$result,$selectionmade,
 3436: 				     $helper->{'VARS'}->{'ANSWER_TYPE'});
 3437: 	#if ($numberofcolumns == 1) {
 3438: 	$result =~ s/\\textwidth\s*=\s*-?\d*\.?\d*\s*(cm|mm|in)/\\textwidth= $helper->{'VARS'}->{'pagesize.width'} $helper->{'VARS'}->{'pagesize.widthunit'} /;
 3439: 	$result =~ s/\\textheight\s*=?\s*-?\d*\.?\d*\s*(cm|mm|in)/\\textheight $helper->{'VARS'}->{'pagesize.height'} $helper->{'VARS'}->{'pagesize.heightunit'} /;
 3440: 	$result =~ s/\\evensidemargin\s*=\s*-?\d*\.?\d*\s*(cm|mm|in)/\\evensidemargin= $helper->{'VARS'}->{'pagesize.lmargin'} $helper->{'VARS'}->{'pagesize.lmarginunit'} /;
 3441: 	$result =~ s/\\oddsidemargin\s*=\s*-?\d*\.?\d*\s*(cm|mm|in)/\\oddsidemargin= $helper->{'VARS'}->{'pagesize.lmargin'} $helper->{'VARS'}->{'pagesize.lmarginunit'} /;
 3442: 	#}
 3443:     }
 3444: 
 3445:     # Set URLback so we can provide a link back to the resource and to change options.
 3446:     # (Since the browser back button does not currently work with https,
 3447:     # the back link is useful even when there is an easy-to-miss LON-CAPA back button.)
 3448: 
 3449:     my $URLback=''; #link to original document
 3450:     if ($helper->{'VARS'}->{'construction'} eq '1') {
 3451: 	$URLback=$helper->{'VARS'}->{'filename'};
 3452:     } elsif ($helper->{VARS}{'symb'}) {
 3453:         my ($map, $id, $url) = &Apache::lonnet::decode_symb($helper->{VARS}{'symb'});
 3454:         $url = &Apache::lonnet::clutter($url);
 3455:         if ($env{'request.enc'}) {
 3456:             $url = &Apache::lonenc::encrypted($url); 
 3457:         }
 3458:         if ($url ne '') {
 3459:             $URLback = $url.(($url =~ /\?/) ? '&amp;':'?').'symb='.$helper->{VARS}{'symb'};
 3460:         }
 3461:     }
 3462:     #
 3463:     # Final adjustment of the font size:
 3464:     #
 3465: 
 3466:     $result = set_font_size($result);
 3467: 
 3468:     # Insert any babel headers required.
 3469: 
 3470:     $result       = &collect_languages($result);
 3471: 
 3472: 
 3473: #-- writing .tex file in prtspool 
 3474:     my $temp_file;
 3475:     my $identifier = &Apache::loncommon::get_cgi_id();
 3476:     my $filename = "/home/httpd/prtspool/$env{'user.name'}_$env{'user.domain'}_printout_$identifier.tex";
 3477:     if (!($#print_array>0)) { 
 3478:        unless ($temp_file = Apache::File->new('>'.$filename)) {
 3479: 	  $r->log_error("Couldn't open $filename for output $!");
 3480: 	  return SERVER_ERROR; 
 3481:        }
 3482:        print $temp_file $result;
 3483:        my $begin=index($result,'\begin{document}',0);
 3484:        my $inc=substr($result,0,$begin+16); 
 3485:     } else {
 3486:        my $begin=index($result,'\begin{document}',0);
 3487:        my $inc=substr($result,0,$begin+16);
 3488:        for (my $i=0;$i<=$#print_array;$i++) {
 3489: 	  if ($i==0) {
 3490: 	      $print_array[$i]=$result;
 3491: 	  } else {
 3492: 	      $print_array[$i].='\end{document}';
 3493: 	      $print_array[$i] = 
 3494: 		&latex_corrections($number_of_columns,$print_array[$i],
 3495: 				   $selectionmade, 
 3496: 				   $helper->{'VARS'}->{'ANSWER_TYPE'});
 3497: 	    
 3498: 	      my $anobegin=index($print_array[$i],'\setcounter{page}',0);
 3499: 	      substr($print_array[$i],0,$anobegin)='';
 3500: 	      $print_array[$i]=$inc.$print_array[$i];
 3501: 	  }
 3502: 	  my $temp_file;
 3503: 	  my $newfilename=$filename;
 3504: 	  my $num=$i+1;
 3505: 	  $newfilename =~s/\.tex$//; 
 3506: 	  $newfilename=sprintf("%s_%03d.tex",$newfilename, $num);
 3507: 	  unless ($temp_file = Apache::File->new('>'.$newfilename)) {
 3508: 	      $r->log_error("Couldn't open $newfilename for output $!");
 3509: 	      return SERVER_ERROR; 
 3510: 	  }
 3511: 	  print $temp_file $print_array[$i];
 3512:        }
 3513:     }
 3514:     my $student_names='';
 3515:     if ($#print_array>0) {
 3516:         for (my $i=0;$i<=$#print_array;$i++) {
 3517:   	  $student_names.=$student_names[$i].'_ENDPERSON_';
 3518: 	}
 3519:     } else {
 3520: 	if ($#student_names>-1) {
 3521: 	   $student_names=$student_names[0].'_ENDPERSON_';
 3522: 	} else {
 3523:            my $fullname = &get_name($env{'user.name'},$env{'user.domain'});
 3524: 	   $student_names=join(':',$env{'user.name'},$env{'user.domain'},
 3525: 				    $env{'request.course.sec'},$fullname).
 3526: 					'_ENDPERSON_'.'_END_';
 3527: 	}
 3528:      }
 3529: 	
 3530:      # logic for now is too complex to trace if this has been defined
 3531:      #  yet.
 3532:      my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
 3533:      my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
 3534:      &Apache::lonnet::appenv({'cgi.'.$identifier.'.file'   => $filename,
 3535: 				'cgi.'.$identifier.'.layout'  => $laystyle,
 3536: 				'cgi.'.$identifier.'.numcol'  => $numberofcolumns,
 3537: 				'cgi.'.$identifier.'.paper'  => $papersize,
 3538: 				'cgi.'.$identifier.'.selection' => $selectionmade,
 3539: 				'cgi.'.$identifier.'.tableofcontents' => $helper->{'VARS'}->{'TABLE_CONTENTS'},
 3540: 				'cgi.'.$identifier.'.tableofindex' => $helper->{'VARS'}->{'TABLE_INDEX'},
 3541: 				'cgi.'.$identifier.'.role' => $perm{'pav'},
 3542: 				'cgi.'.$identifier.'.numberoffiles' => $#print_array,
 3543: 				'cgi.'.$identifier.'.studentnames' => $student_names,
 3544: 				'cgi.'.$identifier.'.backref' => &escape($URLback),});
 3545:     &Apache::lonnet::appenv({"cgi.$identifier.user"    => $env{'user.name'},
 3546: 				"cgi.$identifier.domain"  => $env{'user.domain'},
 3547: 				"cgi.$identifier.courseid" => $cnum, 
 3548: 				"cgi.$identifier.coursedom" => $cdom, 
 3549: 				"cgi.$identifier.resources" => $resources_printed});
 3550: 	
 3551:     my $end_page = &Apache::loncommon::end_page();
 3552:     my $continue_text = &mt('Continue');
 3553:     # If there's been an unrecoverable SSI error, report it to the user
 3554:     if ($ssi_error) {
 3555:         my $helpurl = &Apache::loncommon::top_nav_help('Helpdesk');
 3556:         $r->print('<br /><p class="LC_error">'.&mt('An unrecoverable network error occurred:').'</p><p>'.
 3557:                   &mt('At least one of the resources you chose to print could not be rendered due to an unrecoverable error when communicating with a server:').
 3558:                   '<br />'.$ssi_last_error_resource.'<br />'.$ssi_last_error.
 3559:                   '</p><p>'.&mt('You can continue using the link provided below, but make sure to carefully inspect your output file! The errors will be marked in the file.').'<br />'.
 3560:                   &mt('You may be able to reprint the individual resources for which this error occurred, as the issue may be temporary.').
 3561:                   '<br />'.&mt('If the error persists, please contact the [_1] for assistance.',$helpurl).'</p><p>'.
 3562:                   &mt('We apologize for the inconvenience.').'</p>'.
 3563:                   '<a href="/cgi-bin/printout.pl?'.$identifier.'">'.$continue_text.'</a>'.$end_page);
 3564:     } else {
 3565: 	$r->print(<<FINALEND);
 3566: <br />
 3567: <meta http-equiv="Refresh" content="0; url=/cgi-bin/printout.pl?$identifier" />
 3568: <a href="/cgi-bin/printout.pl?$identifier">$continue_text</a>
 3569: $end_page
 3570: FINALEND
 3571:     }                                     # endif ssi errors.
 3572: }
 3573: 
 3574: 
 3575: sub get_CODE {
 3576:     my ($all_codes,$num,$seed,$size,$type)=@_;
 3577:     my $max='1'.'0'x$size;
 3578:     my $newcode;
 3579:     while(1) {
 3580: 	$newcode=sprintf("%0".$size."d",int(rand($max)));
 3581: 	if (!exists($$all_codes{$newcode})) {
 3582: 	    $$all_codes{$newcode}=1;
 3583: 	    if ($type eq 'number' ) {
 3584: 		return $newcode;
 3585: 	    } else {
 3586: 		return &num_to_letters($newcode);
 3587: 	    }
 3588: 	}
 3589:     }
 3590: }
 3591: 
 3592: sub print_resources {
 3593:     my ($r,$helper,$person,$type,$moreenv,$master_seq,$remove_latex_header,
 3594: 	$LaTeXwidth)=@_;
 3595:     my $current_output = ''; 
 3596:     my $printed = '';
 3597:     my ($username,$userdomain,$usersection) = split /:/,$person;
 3598:     my $fullname = &get_name($username,$userdomain);
 3599:     my $namepostfix = "\\\\";	# Both anon and not anon should get the same vspace.
 3600: 
 3601: 
 3602:     #
 3603:     # Figure out if we need to filter the output by
 3604:     # the incomplete problems for that person
 3605:     #
 3606:     my $print_type = $helper->{'VARS'}->{'PRINT_TYPE'};
 3607:     my $print_incomplete = 0;
 3608:     if (($print_type eq 'map_incomplete_problems_people_seq')   ||
 3609: 	($print_type eq 'incomplete_problems_selpeople_course')) {
 3610: 	$print_incomplete = 1;
 3611:     }
 3612:     if ($person eq 'anonymous') {
 3613: 	$namepostfix .=&mt('Name:')." ";
 3614: 	$fullname = "CODE - ".$moreenv->{'CODE'};
 3615:     }
 3616: 
 3617:     #  Fullname may have special latex characters that need \ prefixing:
 3618:     #
 3619: 
 3620:     my $i           = 0;
 3621:     my $actually_printed = 0;	# Count of resources printed.
 3622:     #goes through all resources, checks if they are available for 
 3623:     #current student, and produces output   
 3624: 
 3625:     &Apache::lonxml::clear_problem_counter();
 3626:     my %page_breaks  = &get_page_breaks($helper);
 3627:     my $columns_in_format = (split(/\|/,$helper->{'VARS'}->{'FORMAT'}))[1];
 3628:     #
 3629:     #   end each student with a 
 3630:     #   Special that allows the post processor to even out the page
 3631:     #   counts later.  Nasty problem this... it would be really
 3632:     #   nice to put the special in as a postscript comment
 3633:     #   e.g. \special{ps:\ENDOFSTUDENTSTAMP}  unfortunately,
 3634:     #   The special gets passed the \ and dvips puts it in the output file
 3635:     #   so we will just rely on prntout.pl to strip  ENDOFSTUDENTSTAMP from the
 3636:     #   postscript.  Each ENDOFSTUDENTSTAMP will go on a line by itself.
 3637:     #
 3638: 
 3639:     my $syllabus_first = 0;
 3640:     my $current_assignment = "";
 3641:     my $assignment;
 3642:     my $courseidinfo = &get_course();
 3643:     my $possprint = scalar(@{$master_seq});
 3644: 
 3645:     foreach my $curresline (@{$master_seq})  {
 3646: 	if (defined $page_breaks{$curresline}) {
 3647: 	    if($i != 0) {
 3648: 		$current_output.= "\\newpage\n";
 3649: 	    }
 3650: 	}
 3651: 	$current_output .= &get_extra_vspaces($helper, $curresline);
 3652: 	$i++;
 3653: 	my ($map,$id,$res_url) = &Apache::lonnet::decode_symb($curresline);
 3654: 
 3655: 	# See if we need to emit a new header:
 3656: 
 3657: 	if ( !($type eq 'problems' && 
 3658: 	       ($curresline!~ m/$LONCAPA::assess_page_re/)) ) {
 3659: 	    if ($print_incomplete && !&incomplete($username, $userdomain, $res_url)) {
 3660: 		next;
 3661: 	    }
 3662: 	    $actually_printed++; # we're going to print one.
 3663: 
 3664: 	    if (&Apache::lonnet::allowed('bre',$res_url)) {
 3665: 		if ($res_url!~m|^ext/|
 3666: 		    && $res_url=~/\.(problem|exam|quiz|assess|survey|form|library|page|xml|html|htm|xhtml|xhtm)$/) {
 3667: 		    $printed .= $curresline.':';
 3668: 		    &Apache::lonxml::remember_problem_counter();    
 3669: 
 3670: 		    my $rendered = &get_student_view_with_retries($curresline,$ssi_retry_count,$username,$userdomain,$env{'request.course.id'},'tex',$moreenv);
 3671:                     if ($res_url =~ /\.page$/) {
 3672:                         if ($remove_latex_header eq 'NO') {
 3673:                             if (!($rendered =~ /\\begin\{document\}/)) {
 3674:                                 $rendered = &print_latex_header().$rendered;
 3675:                             }
 3676:                         }
 3677: ;
 3678:                         if ($remove_latex_header eq 'YES') {
 3679:                             $rendered = &latex_header_footer_remove($rendered);
 3680:                         } else {
 3681:                             $rendered =~ s/\\end\{document}\d*//;
 3682:                         }
 3683:                     }
 3684: 		    if(($helper->{'VARS'}->{'ANSWER_TYPE'} eq 'no') ||
 3685: 		       ($helper->{'VARS'}->{'ANSWER_TYPE'} eq 'only')) {
 3686: 			#   Use a copy of the hash so we don't pervert it on future loop passes.
 3687: 			my %answerenv = %{$moreenv};
 3688: 			$answerenv{'answer_output_mode'}='tex';
 3689: 
 3690: 
 3691: 			$answerenv{'latex_type'}=$helper->{'VARS'}->{'LATEX_TYPE'};
 3692: 			
 3693: 			&Apache::lonxml::restore_problem_counter();
 3694: 
 3695: 			my $ansrendered = &Apache::loncommon::get_student_answers($curresline,$username,$userdomain,$env{'request.course.id'},%answerenv);
 3696: 
 3697: 			if ($helper->{'VARS'}->{'ANSWER_TYPE'} eq 'no') {
 3698: 			    $rendered=~s/(\\keephidden\{ENDOFPROBLEM})/$ansrendered$1/;
 3699: 			} else {
 3700: 
 3701: 			    
 3702: 			    my $header =&print_latex_header($helper->{'VARS'}->{'LATEX_TYPE'});
 3703:                             unless ($helper->{'VARS'}->{'ANSWER_TYPE'} eq 'only') {
 3704:                                 $header =~ s/\\begin\{document}//;     #<<<<<
 3705:                             }
 3706: 			    my $title = &Apache::lonnet::gettitle($curresline);
 3707: 			    $title = &Apache::lonxml::latex_special_symbols($title);
 3708: 			    my $body   ='\vskip 0 mm \noindent\textbf{'.$title.'}\vskip 0 mm ';
 3709: 			    $body     .=&path_to_problem($res_url,$LaTeXwidth);
 3710: 			    $body     .='\vskip 1 mm '.$ansrendered;
 3711: 			    $body     = &encapsulate_minipage($body);
 3712: 			    $rendered = $header.$body;
 3713: 			}
 3714: 		    }
 3715: 		    if ($helper->{'VARS'}->{'PRINT_ANNOTATIONS'} eq 'yes') {
 3716: 			my $url = &Apache::lonnet::clutter($res_url);
 3717: 			my $annotation = &annotate($url);
 3718: 			$rendered =~  s/(\\keephidden\{ENDOFPROBLEM})/$annotation$1/;
 3719: 		    }
 3720: 		    my $junk;
 3721: 		    if ($remove_latex_header eq 'YES') {
 3722: 			$rendered = &latex_header_footer_remove($rendered);
 3723: 		    } else {
 3724: 			$rendered =~ s/\\end\{document}//;
 3725: 		    }
 3726: 		    $current_output .= $rendered;		    
 3727: 		} elsif ($res_url=~/\/(smppg|syllabus|aboutme|bulletinboard|ext\.tool)$/) {
 3728: 		    if ($i == 1) {
 3729: 			$syllabus_first = 1;
 3730: 		    }
 3731: 		    $printed .= $curresline.':';
 3732: 		    my $rendered = &get_student_view_with_retries($curresline,$ssi_retry_count,$username,$userdomain,$env{'request.course.id'},'tex',$moreenv);
 3733: 		    if ($helper->{'VARS'}->{'PRINT_ANNOTATIONS'} eq 'yes') {
 3734: 			my $url = &Apache::lonnet::clutter($res_url);
 3735: 			my $annotation = &annotate($url);
 3736: 			$annotation    =~ s/(\\end\{document})/$annotation$1/;
 3737: 		    }
 3738: 		    if ($remove_latex_header eq 'YES') {
 3739: 			$rendered = &latex_header_footer_remove($rendered);
 3740: 		    } else {
 3741: 			$rendered =~ s/\\end\{document}//;
 3742: 		    }
 3743: 		    $current_output .= $rendered.'\vskip 0.5mm\noindent\makebox[\textwidth/$number_of_columns][b]{\hrulefill}\strut \vskip 0 mm \strut ';
 3744: 		} elsif($res_url = ~/\.pdf$/) {
 3745: 		    my $url = &Apache::lonnet::clutter($res_url);
 3746: 		    my $rendered  = &include_pdf($url);
 3747: 		    if ($remove_latex_header ne 'NO') {
 3748: 			$rendered = &latex_header_footer_remove($rendered);
 3749: 		    }
 3750: 		    $current_output .= $rendered;
 3751: 		} else {
 3752: 		    my $rendered = &unsupported($res_url,$helper->{'VARS'}->{'LATEX_TYPE'},$curresline);
 3753: 		    if ($remove_latex_header ne 'NO') {
 3754: 			$rendered = &latex_header_footer_remove($rendered);
 3755: 		    } else {
 3756: 			$rendered =~ s/\\end\{document}//;
 3757: 		    }
 3758: 		    $current_output .= $rendered;
 3759: 		}
 3760: 	    }
 3761: 	    $remove_latex_header = 'YES';
 3762: 	}
 3763: 	$assignment = &Apache::lonxml::latex_special_symbols(
 3764: 	    &Apache::lonnet::gettitle($map), 'header');
 3765: 	if (($assignment ne $current_assignment) && ($assignment ne "")) {
 3766: 	    my $header_line = &format_page_header($LaTeXwidth, $parmhash{'print_header_format'},
 3767: 						  $assignment, $courseidinfo, 
 3768: 						  $fullname, $usersection);
 3769: 	    my $header_start = ($columns_in_format == 1) ? '\lhead'
 3770: 		: '\fancyhead[LO]';
 3771: 	    $header_line = $header_start.'{'.$header_line.'}';
 3772: 	    $current_output = $current_output . $header_line;
 3773: 	    $current_assignment = $assignment;
 3774: 	}
 3775: 
 3776: 	if (&Apache::loncommon::connection_aborted($r)) { last; }
 3777:     }
 3778:     # If we are printing incomplete it's possible we don't have
 3779:     # anything to print.  The print subsystem is not so good at handling
 3780:     # that so we're going to generate a stub that says there are no
 3781:     # incomplete resources for the person.
 3782:     #
 3783: 
 3784:     if ($actually_printed == 0) {
 3785:         my $message = &mt('No resources to print');
 3786:         if (!$possprint) {
 3787:             if ($perm{'pav'} || $perm{'pfo'}) {
 3788:                 $message = &mt('There are no unhidden resources to print.')."\n\n".
 3789:                            &mt('The most likely reason is one of the following: ')."\n".
 3790:                            '\begin{itemize}'."\n".
 3791:                            '\item '.&mt("The 'Resource hidden from students' parameter is set for the folder being printed.")."\n".
 3792:                            '\item '.&mt("'Hidden' is checked in the Course Editor individually for each resource in the folder being printed.")."\n".
 3793:                            '\end{itemize}'."\n\n".
 3794:                            &mt("Note: to print a bubblesheet exam which you want to hide from students, ".
 3795:                                "use the Course Editor to check the 'Hidden' checkbox for the exam folder itself.")."\n";
 3796:             }
 3797:         } elsif ($print_incomplete) {
 3798:             $message = &mt('No incomplete resources');
 3799:         }
 3800:         if ($message) { 
 3801: 	    $current_output  = &encapsulate_minipage("\\vskip -10mm \n$message\n \\vskip 100 mm { }\n");
 3802:         }
 3803: 	if ($remove_latex_header eq "NO") {
 3804: 	    $current_output = &print_latex_header() . $current_output;
 3805: 	} else {
 3806: 	    $current_output = &latex_header_footer_remove($current_output);
 3807: 	}
 3808:     }
 3809: 
 3810:     if ($syllabus_first) {
 3811:         $current_output =~ s/\\\\ Last updated:/Last updated:/
 3812:     }
 3813:     my $currentassignment=&Apache::lonxml::latex_special_symbols($helper->{VARS}->{'assignment'},'header');
 3814:     my $header_line =
 3815:     &format_page_header($LaTeXwidth, $parmhash{'print_header_format'},
 3816:                         $currentassignment, $courseidinfo, $fullname, $usersection);
 3817:     my $header_start = ($columns_in_format == 1) ? '\lhead' : '\fancyhead[LO]';
 3818:     my $newheader = $header_start.'{'.$header_line.'}';
 3819:     if ($current_output=~/\\documentclass/) {
 3820: 	$current_output =~ s/\\begin\{document}/\\setlength{\\topmargin}{1cm} \\begin{document}\\noindent\\parbox{\\minipagewidth}{\\noindent$newheader$namepostfix}\\vskip 5 mm /;
 3821: 
 3822:     } else {
 3823: 	my $blankpages = 
 3824: 	    '\clearpage\strut\clearpage'x$helper->{'VARS'}->{'EMPTY_PAGES'};
 3825: 	
 3826: 	$current_output = '\strut\vspace*{-6 mm}\\newline'.
 3827: 	    &copyright_line().' \newpage '.$blankpages.$end_of_student.
 3828: 	    '\setcounter{page}{1}\noindent\parbox{\minipagewidth}{\noindent'.
 3829: 	    $newheader.$namepostfix. '} \vskip 5 mm '.$current_output;
 3830: 
 3831:     }
 3832:     #
 3833:     #  Close the student bracketing.
 3834:     #
 3835:     return ($current_output,$fullname, $printed);
 3836: 
 3837: }
 3838: 
 3839: sub printing_blocked {
 3840:     my ($r,$blocktext) = @_;
 3841:     my $title = &mt('Preparing Printout');
 3842:     &Apache::lonhtmlcommon::clear_breadcrumbs();
 3843:     &Apache::lonhtmlcommon::add_breadcrumb({href=>'/adm/printout',
 3844:                                             text=> $title});
 3845:     my $breadcrumbs = &Apache::lonhtmlcommon::breadcrumbs($title);
 3846:     &Apache::loncommon::content_type($r,'text/html');
 3847:     &Apache::loncommon::no_cache($r);
 3848:     $r->send_http_header;
 3849:     $r->print(&Apache::loncommon::start_page('Preparing Printout').
 3850:               $breadcrumbs.
 3851:               $blocktext.
 3852:               &Apache::loncommon::end_page());
 3853:     return;
 3854: }
 3855: 
 3856: sub handler {
 3857: 
 3858:     my $r = shift;
 3859: 
 3860:     if ($env{'request.course.id'}) {
 3861:         my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
 3862:         my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
 3863:         my ($blocked,$blocktext) = 
 3864:             &Apache::loncommon::blocking_status('printout',$cnum,$cdom);
 3865:         if ($blocked) {
 3866:             my $checkrole = "cm./$cdom/$cnum";
 3867:             if ($env{'request.course.sec'} ne '') {
 3868:                 $checkrole .= "/$env{'request.course.sec'}";
 3869:             }
 3870:             unless ((&Apache::lonnet::allowed('evb',undef,undef,$checkrole)) && 
 3871:                     ($env{'request.role'} !~ m{^st\./$cdom/$cnum})) {
 3872:                 &printing_blocked($r,$blocktext);
 3873:                 return OK;
 3874:             }
 3875:         }
 3876:     }
 3877:     
 3878:     &init_perm();
 3879:     my $helper = printHelper($r);
 3880:     if (!ref($helper)) {
 3881: 	return $helper;
 3882:     }
 3883:    
 3884: 
 3885:     %parmhash=&Apache::lonnet::coursedescription($env{'request.course.id'});
 3886:  
 3887: 
 3888: 
 3889: 
 3890:     #  If a figure conversion queue file exists for this user.domain
 3891:     # we delete it since it can only be bad (if it were good, printout.pl
 3892:     # would have deleted it the last time around.
 3893: 
 3894:     my $conversion_queuefile = "/home/httpd/prtspool/$env{'user.name'}_$env{'user.domain'}_printout.dat";
 3895:     if(-e $conversion_queuefile) {
 3896: 	unlink $conversion_queuefile;
 3897:     }
 3898:     
 3899: 
 3900:     &output_data($r,$helper,\%parmhash);
 3901:     return OK;
 3902: }
 3903: 
 3904: use Apache::lonhelper;
 3905: 
 3906: sub addMessage {
 3907:     my $text = shift;
 3908:     my $paramHash = Apache::lonhelper::getParamHash();
 3909:     $paramHash->{MESSAGE_TEXT} = $text;
 3910:     Apache::lonhelper::message->new();
 3911: }
 3912: 
 3913: 
 3914: 
 3915: sub init_perm {
 3916:     undef(%perm);
 3917:     $perm{'pav'}=&Apache::lonnet::allowed('pav',$env{'request.course.id'});
 3918:     if (!$perm{'pav'}) {
 3919: 	$perm{'pav'}=&Apache::lonnet::allowed('pav',
 3920: 		  $env{'request.course.id'}.'/'.$env{'request.course.sec'});
 3921:     }
 3922:     $perm{'pfo'}=&Apache::lonnet::allowed('pfo',$env{'request.course.id'});
 3923:     if (!$perm{'pfo'}) {
 3924: 	$perm{'pfo'}=&Apache::lonnet::allowed('pfo',
 3925: 		  $env{'request.course.id'}.'/'.$env{'request.course.sec'});
 3926:     }
 3927:     $perm{'vgr'}=&Apache::lonnet::allowed('vgr',$env{'request.course.id'});
 3928:     if (!$perm{'vgr'}) {
 3929:         $perm{'vgr'}=&Apache::lonnet::allowed('vgr',
 3930:                    $env{'request.course.id'}.'/'.$env{'request.course.sec'});
 3931:     }
 3932: }
 3933: 
 3934: sub get_randomly_ordered_warning {
 3935:     my ($helper,$map) = @_;
 3936: 
 3937:     my $message;
 3938: 
 3939:     my $postdata = $env{'form.postdata'} || $helper->{VARS}{'postdata'};
 3940:     my $navmap = Apache::lonnavmaps::navmap->new();
 3941:     if (defined($navmap)) {
 3942:         my $res = $navmap->getResourceByUrl($map);
 3943:         if ($res) {
 3944: 	    my $func = 
 3945: 	        sub { return ($_[0]->is_map() && $_[0]->randomorder); };
 3946: 	    my @matches = $navmap->retrieveResources($res, $func,1,1,1);
 3947: 
 3948:         }
 3949:     } else {
 3950:         $message = "Retrieval of information about ordering of resources failed."; 
 3951:         return '<message type="warning">'.$message.'</message>';
 3952:     }
 3953:     return;
 3954: }
 3955: 
 3956: sub printHelper {
 3957:     my $r = shift;
 3958: 
 3959:     if ($r->header_only) {
 3960:         if ($env{'browser.mathml'}) {
 3961:             &Apache::loncommon::content_type($r,'text/xml');
 3962:         } else {
 3963:             &Apache::loncommon::content_type($r,'text/html');
 3964:         }
 3965:         $r->send_http_header;
 3966:         return OK;
 3967:     }
 3968: 
 3969:     # Send header, nocache
 3970:     if ($env{'browser.mathml'}) {
 3971:         &Apache::loncommon::content_type($r,'text/xml');
 3972:     } else {
 3973:         &Apache::loncommon::content_type($r,'text/html');
 3974:     }
 3975:     &Apache::loncommon::no_cache($r);
 3976:     $r->send_http_header;
 3977:     $r->rflush();
 3978: 
 3979:     # Unfortunately, this helper is so complicated we have to
 3980:     # write it by hand
 3981: 
 3982:     Apache::loncommon::get_unprocessed_cgi($ENV{QUERY_STRING});
 3983:     
 3984:     my $helper = Apache::lonhelper::helper->new("Printing Helper");
 3985:     $helper->declareVar('symb');
 3986:     $helper->declareVar('postdata');    
 3987:     $helper->declareVar('curseed'); 
 3988:     $helper->declareVar('probstatus');   
 3989:     $helper->declareVar('filename');
 3990:     $helper->declareVar('construction');
 3991:     $helper->declareVar('assignment');
 3992:     $helper->declareVar('style_file');
 3993:     $helper->declareVar('student_sort');
 3994:     $helper->declareVar('FINISHPAGE');
 3995:     $helper->declareVar('PRINT_TYPE');
 3996:     $helper->declareVar("showallfoils");
 3997:     $helper->declareVar("STUDENTS");
 3998:     $helper->declareVar("EXTRASPACE");
 3999: 
 4000:    
 4001: 
 4002: 
 4003:     #  The page breaks and extra spaces
 4004:     #  can get loaded initially from the course environment:
 4005:     # But we only do this in the initial state so that they are allowed to change.
 4006:     #
 4007: 
 4008:     
 4009:     &Apache::loncommon::restore_course_settings('print',
 4010: 						{'pagebreaks'  => 'scalar',
 4011: 						 'extraspace'  => 'scalar',
 4012: 						 'extraspace_units' => 'scalar',
 4013: 					         'lastprinttype' => 'scalar'});
 4014:     
 4015:     # This will persistently load in the data we want from the
 4016:     # very first screen.
 4017:     
 4018:     if($helper->{VARS}->{PRINT_TYPE} eq $env{'form.lastprinttype'}) {
 4019: 	if (!defined ($env{"form.CURRENT_STATE"})) {
 4020: 	    
 4021: 	    $helper->{VARS}->{FINISHPAGE} = $env{'form.pagebreaks'};
 4022: 	    $helper->{VARS}->{EXTRASPACE} = $env{'form.extraspace'};
 4023: 	    $helper->{VARS}->{EXTRASPACE_UNITS} = $env{'form.extraspace_units'};
 4024: 	} else {
 4025: 	    my $state = $env{"form.CURRENT_STATE"};
 4026: 	    if ($state eq "START") {
 4027: 		$helper->{VARS}->{FINISHPAGE} = $env{'form.pagebreaks'};
 4028: 		$helper->{VARS}->{EXTRASPACE} = $env{'form.extraspace'};
 4029: 		$helper->{VARS}->{EXTRASPACE_UNITS} = $env{'form.extraspace_units'};
 4030: 		
 4031: 	    }
 4032: 	}
 4033: 	
 4034:     }
 4035: 
 4036:     # Detect whether we're coming from construction space
 4037:     if ($env{'form.postdata'}=~m{^/priv}) {
 4038:         $helper->{VARS}->{'filename'} = $env{'form.postdata'};
 4039:         $helper->{VARS}->{'construction'} = 1;
 4040:     } else {
 4041:         if ($env{'form.postdata'}) {
 4042:             $helper->{VARS}->{'symb'} = &Apache::lonnet::symbread($env{'form.postdata'});
 4043: 	    if ( $helper->{VARS}->{'symb'} eq '') {
 4044: 		$helper->{VARS}->{'postdata'} = $env{'form.postdata'};
 4045: 	    }
 4046:         }
 4047:         if ($env{'form.symb'}) {
 4048:             $helper->{VARS}->{'symb'} = $env{'form.symb'};
 4049:         }
 4050:         if ($env{'form.url'}) {
 4051:             $helper->{VARS}->{'symb'} = &Apache::lonnet::symbread($helper->{VARS}->{'postdata'});
 4052:         }
 4053: 
 4054:     }
 4055: 
 4056:     if ($env{'form.symb'}) {
 4057:         $helper->{VARS}->{'symb'} = $env{'form.symb'};
 4058:     }
 4059:     if ($env{'form.url'}) {
 4060:         $helper->{VARS}->{'symb'} = &Apache::lonnet::symbread($helper->{VARS}->{'postdata'});
 4061: 
 4062:     }
 4063:     $helper->{VARS}->{'symb'}=
 4064: 	&Apache::lonenc::check_encrypt($helper->{VARS}->{'symb'});
 4065:     my ($resourceTitle,$sequenceTitle,$mapTitle) = &details_for_menu($helper);
 4066:     if ($sequenceTitle ne '') {$helper->{VARS}->{'assignment'}=$sequenceTitle;}
 4067: 
 4068:     
 4069:     # Extract map
 4070:     my $symb = $helper->{VARS}->{'symb'};
 4071:     my ($map, $id, $url);
 4072:     my $subdir;
 4073:     my $is_published=0;		# True when printing from resource space.
 4074:     my $res_printable = 1;	# By default the current resource is printable.    
 4075:     my $userCanPrint = ($perm{'pav'} || $perm{'pfo'});
 4076:     my $res_printstartdate;
 4077:     my $res_printenddate;
 4078:     my $map_open = 0;
 4079:     my $map_close = 0xffffffff;
 4080:     my $course_open = 0;
 4081:     my $course_close = 0xffffffff;
 4082: 
 4083:     # Get the resource name from construction space
 4084:     if ($helper->{VARS}->{'construction'}) {
 4085:         $resourceTitle = substr($helper->{VARS}->{'filename'}, 
 4086:                                 rindex($helper->{VARS}->{'filename'}, '/')+1);
 4087:         $subdir = substr($helper->{VARS}->{'filename'},
 4088:                          0, rindex($helper->{VARS}->{'filename'}, '/') + 1);
 4089:     } else {
 4090: 	# From course space:
 4091: 
 4092: 	if ($symb ne '') {
 4093: 	    ($map, $id, $url) = &Apache::lonnet::decode_symb($symb);
 4094: 	    $helper->{VARS}->{'postdata'} = 
 4095: 		&Apache::lonenc::check_encrypt(&Apache::lonnet::clutter($url));
 4096: 	    my $navmap = Apache::lonnavmaps::navmap->new();
 4097: 	    my $res   = $navmap->getBySymb($symb);
 4098: 	    $res_printable  = $res->resprintable() || $userCanPrint; #printability in course context
 4099: 	    ($res_printstartdate, $res_printenddate) = 	&get_print_dates($res);
 4100: 	    ($course_open, $course_close) = &course_print_dates($res);
 4101: 	    ($map_open, $map_close)       = &map_print_dates($res);
 4102: 
 4103: 	} else {
 4104: 	    # Resource space.
 4105: 
 4106: 	    $url = $helper->{VARS}->{'postdata'};
 4107: 	    $is_published=1;	# From resource space.
 4108: 	}
 4109: 	$url = &Apache::lonnet::clutter($url);
 4110:         if (!$resourceTitle) { # if the resource doesn't have a title, use the filename
 4111:             my $postdata = $helper->{VARS}->{'postdata'};
 4112:             $resourceTitle = substr($postdata, rindex($postdata, '/') + 1);
 4113:         }
 4114:         $subdir = &Apache::lonnet::filelocation("", $url);
 4115: 
 4116: 
 4117:     }
 4118:     if (!$helper->{VARS}->{'curseed'} && $env{'form.curseed'}) {
 4119: 	$helper->{VARS}->{'curseed'}=$env{'form.curseed'};
 4120:     }
 4121: 
 4122:     if (!$helper->{VARS}->{'probstatus'} && $env{'form.problemtype'}) {
 4123: 	$helper->{VARS}->{'probstatus'}=$env{'form.problemstatus'};
 4124:     }
 4125: 
 4126:     my $userCanSeeHidden = Apache::lonnavmaps::advancedUser();
 4127: 
 4128:     Apache::lonhelper::registerHelperTags();
 4129: 
 4130:     # "Delete everything after the last slash."
 4131:     $subdir =~ s|/[^/]+$||;
 4132: 
 4133:     # What can be printed is a very dynamic decision based on
 4134:     # lots of factors. So we need to dynamically build this list.
 4135:     # To prevent security leaks, states are only added to the wizard
 4136:     # if they can be reached, which ensures manipulating the form input
 4137:     # won't allow anyone to reach states they shouldn't have permission
 4138:     # to reach.
 4139: 
 4140:     # printChoices is tracking the kind of printing the user can
 4141:     # do, and will be used in a choices construction later.
 4142:     # In the meantime we will be adding states and elements to
 4143:     # the helper by hand.
 4144:     my $printChoices = [];
 4145:     my $paramHash;
 4146: 
 4147:     # If there is a current resource and it is printable
 4148:     # Give that as a choice.
 4149: 
 4150:     if ($resourceTitle && $res_printable) {
 4151:         push @{$printChoices}, ["<b><i>$resourceTitle</i></b> (".&mt('the resource you just saw on the screen').")", 'current_document', 'PAGESIZE'];
 4152:     } 
 4153: 
 4154:     # Useful filter strings
 4155: 
 4156:     my $isPrintable = ' && $res->resprintable()';
 4157: 
 4158:     my $isProblem = '(($res->is_problem()||$res->contains_problem() ||$res->is_practice()))';
 4159:     $isProblem .= $isPrintable unless $userCanPrint;
 4160:     $isProblem .= ' && !$res->randomout()' if !$userCanSeeHidden;
 4161:     my $isProblemOrMap = '($res->is_problem() || $res->contains_problem() || $res->is_sequence() || $res->is_practice())';
 4162:     $isProblemOrMap .= $isPrintable unless $userCanPrint;
 4163:     my $isNotMap = '(!$res->is_sequence())';
 4164:     $isNotMap .= $isPrintable unless $userCanPrint;
 4165:     $isNotMap .= ' && !$res->randomout()' if !$userCanSeeHidden;
 4166:     my $isMap = '$res->is_map()';
 4167:     $isMap .= $isPrintable unless $userCanPrint;
 4168:     my $symbFilter = '$res->shown_symb() ';
 4169:     my $urlValue = '$res->link()';
 4170: 
 4171:     $helper->declareVar('SEQUENCE');
 4172: 
 4173:     # If we're in a sequence...
 4174: 
 4175:     my $start_new_option;
 4176:     if ($perm{'pav'}) {
 4177: 	$start_new_option = 
 4178: 	    "<option text='".&mt('Start new page[_1]before selected','<br />').
 4179: 	    "' variable='FINISHPAGE' />".
 4180: 	    "<option text='".&mt('Extra space[_1]before selected','<br />').
 4181: 	    "' variable='EXTRASPACE' type='text' />" .
 4182: 	    "<option " .
 4183: 	    "' variable='POSSIBLE_RESOURCES' type='hidden' />".
 4184: 	    "<option text='".&mt('Space units[_1]check for mm','<br />').
 4185: 	    "' variable='EXTRASPACE_UNITS' type='checkbox' />"
 4186: 	    ;
 4187: 	    
 4188: 
 4189:     }
 4190: 
 4191:     # If not construction space user can print the components of a page:
 4192: 
 4193:     my $page_ispage;
 4194:     my $page_title;
 4195:     if (!$helper->{VARS}->{'construction'}) {
 4196: 	my $varspostdata = $helper->{VARS}->{'postdata'};
 4197: 	my $varsassignment = $helper->{VARS}->{'assignment'};
 4198: 	my $page_navmap         = Apache::lonnavmaps::navmap->new();
 4199: 	if (defined($page_navmap)) {
 4200: 	    my @page_resources      = $page_navmap->retrieveResources($url);
 4201: 	    if(defined($page_resources[0])) {
 4202: 		$page_ispage       = $page_resources[0]->is_page();
 4203: 		$page_title     = $page_resources[0]->title();
 4204: 		my $resourcesymb   = $page_resources[0]->symb();
 4205: 		my ($pagemap, $pageid, $pageurl) = &Apache::lonnet::decode_symb($symb);
 4206: 		if ($page_ispage) {
 4207: 		    push @{$printChoices}, 
 4208: 		    [&mt('Selected [_1]Problems[_2] from page [_3]', '<b>', '</b>', '<b><i>'.$page_title.'</i></b>'), 
 4209: 		     'map_problems_in_page', 
 4210: 		     'CHOOSE_PROBLEMS_PAGE'];
 4211: 		    push @{$printChoices}, 
 4212: 		    [&mt('Selected [_1]Resources[_2] from page [_3]', '<b>', '</b>', '<b><i>'.$page_title.'</i></b>'), 
 4213: 		     'map_resources_in_page', 
 4214: 		     'CHOOSE_RESOURCES_PAGE'];
 4215: 		}
 4216:         my $helperFragment = &generate_resource_chooser('CHOOSE_PROBLEMS_PAGE',
 4217: 							'Select Problem(s) to print',
 4218: 							"multichoice='1' toponly='1' addstatus='1' closeallpages='1' modallink='1'",
 4219: 							'RESOURCES',
 4220: 							'PAGESIZE',
 4221: 							$url,
 4222: 							$isProblem, '',  $symbFilter,
 4223: 							$start_new_option);
 4224: 
 4225: 
 4226:       $helperFragment .= &generate_resource_chooser('CHOOSE_RESOURCES_PAGE',
 4227: 						    'Select Resource(s) to print',
 4228: 						    'multichoice="1" toponly="1" addstatus="1" closeallpages="1" modallink="1"',
 4229: 						    'RESOURCES',
 4230: 						    'PAGESIZE',
 4231: 						    $url,
 4232: 						    $isNotMap, '', $symbFilter,
 4233: 						    $start_new_option);
 4234: 
 4235: 						    
 4236: 
 4237: 
 4238: 
 4239: 	&Apache::lonxml::xmlparse($r, 'helper', $helperFragment);
 4240: 	
 4241: 	    }
 4242: 	}
 4243:     }
 4244: 
 4245:     if (($helper->{'VAR'}->{'construction'} ne '1' ) &&
 4246: 	$helper->{VARS}->{'postdata'} &&
 4247: 	$helper->{VARS}->{'assignment'}) {
 4248: 
 4249: 	# BZ 5209 - Print incomplete problems from sequence:
 4250: 	# the exact form of this depends on whether or not we are privileged or a mere
 4251: 	# plebe of s student:
 4252: 
 4253: 	my $printSelector = 'map_incomplete_problems_seq';
 4254: 	my $nextState     = 'CHOOSE_INCOMPLETE_SEQ';
 4255: 	my $textSuffix    = '';
 4256: 
 4257: 	if ($userCanPrint)  {
 4258: 	    $printSelector = 'map_incomplete_problems_people_seq';
 4259: 	    $nextState     = 'CHOOSE_INCOMPLETE_PEOPLE_SEQ';
 4260: 	    $textSuffix    = ' for selected students';
 4261: 	    my $helperStates =
 4262: 		&create_incomplete_folder_selstud_helper($helper, $map); 
 4263: 	    &Apache::lonxml::xmlparse($r, 'helper', $helperStates);
 4264: 	} else {
 4265: 	    if (&printable($map_open, $map_close)) {
 4266: 		my $helperStates = &create_incomplete_folder_helper($helper, $map); # Create needed states for student.
 4267: 		&Apache::lonxml::xmlparse($r, 'helper', $helperStates);
 4268: 	    } else {
 4269: 		# TODO: Figure out how to break the news...this folder is not printable.
 4270: 	    }
 4271: 	}
 4272: 
 4273: 	if ($userCanPrint || &printable($map_open, $map_close)) {
 4274: 	    push(@{$printChoices},
 4275: 		 [&mt('Selected  [_1]Incomplete Problems[_2] from folder [_3]' . $textSuffix,
 4276: 		      '<b>', '</b>',
 4277: 		      '<b><i>'. $sequenceTitle . '</b></i>'),
 4278: 		  $printSelector,
 4279: 		  $nextState]);
 4280: 	}
 4281:         # Allow problems from sequence
 4282: 	if ($userCanPrint || &printable($map_open, $map_close)) {
 4283: 	    push @{$printChoices}, 
 4284: 	    [&mt('Selected [_1]Problems[_2] from folder [_3]','<b>','</b>','<b><i>'.$sequenceTitle.'</i></b>'), 
 4285: 	     'map_problems', 
 4286: 	     'CHOOSE_PROBLEMS'];
 4287: 	    # Allow all resources from sequence
 4288: 	    push @{$printChoices}, [&mt('Selected [_1]Resources[_2] from folder [_3]','<b>','</b>','<b><i>'.$sequenceTitle.'</i></b>'), 
 4289: 				    'map_problems_pages', 
 4290: 				    'CHOOSE_PROBLEMS_HTML'];
 4291: 	    my $helperFragment = &generate_resource_chooser('CHOOSE_PROBLEMS',
 4292: 							    'Select Problem(s) to print',
 4293: 							    'multichoice="1" toponly="1" addstatus="1" closeallpages="1" modallink="1"',
 4294: 							    'RESOURCES',
 4295: 							    'PAGESIZE',
 4296: 							    $map,
 4297: 							    $isProblem, '',
 4298: 							    $symbFilter,
 4299: 							    $start_new_option);
 4300: 	    $helperFragment .= &generate_resource_chooser('CHOOSE_PROBLEMS_HTML',
 4301: 							  'Select Resource(s) to print',
 4302: 							  'multichoice="1" toponly="1" addstatus="1" closeallpages="1" modallink="1"',
 4303: 							  'RESOURCES',
 4304: 							  'PAGESIZE',
 4305: 							  $map,
 4306: 							  $isNotMap, '',
 4307: 							  $symbFilter,
 4308: 							  $start_new_option);
 4309: 	    
 4310: 	    &Apache::lonxml::xmlparse($r, 'helper', $helperFragment);
 4311: 	} else {
 4312: 	    # TODO: Figure out how to tell them the folder is not printable.
 4313: 	}
 4314:     }
 4315: 	# If the user has pfo (print for others) allow them to print all 
 4316: 	# problems and resources  in the entire course, optionally for selected students
 4317: 	my $post_data = $helper->{VARS}->{'postdata'};
 4318:     
 4319:     if ($perm{'pfo'} &&  !$is_published  &&
 4320:         ($post_data=~/\/res\// || $post_data =~/\/(syllabus|smppg|aboutme|bulletinboard)$/)) { 
 4321: 
 4322: 	# BZ 5209 - incomplete problems from entire course:
 4323: 
 4324: 	push(@{$printChoices},
 4325: 	     [&mtn('Selected <b>Incomplete Problems</b> from <b>entire course</b> for selected people'),
 4326: 	      'incomplete_problems_selpeople_course', 'INCOMPLETE_PROBLEMS_COURSE_RESOURCES']);
 4327: 	my $helperFragment = &create_incomplete_course_helper($helper); # Create needed states.
 4328: 
 4329: 	&Apache::lonxml::xmlparse($r, 'helper', $helperFragment);
 4330: 
 4331: 	#  Selected problems/resources from entire course:
 4332: 
 4333:         push @{$printChoices}, [&mtn('Selected <b>Problems</b> from <b>entire course</b>'), 'all_problems', 'ALL_PROBLEMS'];
 4334: 	push @{$printChoices}, [&mtn('Selected <b>Resources</b> from <b>entire course</b>'), 'all_resources', 'ALL_RESOURCES'];
 4335: 	push @{$printChoices}, [&mtn('Selected <b>Problems</b> from <b>entire course</b> for <b>selected people</b>'), 'all_problems_students', 'ALL_PROBLEMS_STUDENTS'];
 4336: my $suffixXml = <<ALL_PROBLEMS;
 4337:   <state name="STUDENTS1" title="Select People">
 4338:       <message><b>Select sorting order of printout</b> </message>
 4339:     <choices variable='student_sort'>
 4340:       <choice computer='0'>Sort by section then student</choice>
 4341:       <choice computer='1'>Sort by students across sections.</choice>
 4342:     </choices>
 4343:       <message><br /><hr /><br /> </message>
 4344:       <student multichoice='1' variable="STUDENTS" nextstate="PRINT_FORMATTING" coursepersonnel="1"/>
 4345:   </state>
 4346: ALL_PROBLEMS
 4347:          &Apache::lonxml::xmlparse($r, 'helper', 
 4348: 				   &generate_resource_chooser('ALL_PROBLEMS',
 4349: 							      'Select Problem(s) to print',
 4350: 							      'multichoice="1" suppressEmptySequences="0" addstatus="1" closeallpages="1" modallink="1"',
 4351: 							      'RESOURCES',
 4352: 							      'PAGESIZE',
 4353: 							      '',
 4354: 							      $isProblemOrMap, $isNotMap,
 4355: 							      $symbFilter,
 4356: 							      $start_new_option) .
 4357: 				   &generate_resource_chooser('ALL_RESOURCES',
 4358: 							      'Select Resource(s) to print',
 4359: 							      " toponly='0' multichoice='1' suppressEmptySequences='0' addstatus='1' closeallpages='1' modallink='1'",
 4360: 							      'RESOURCES',
 4361: 							      'PAGESIZE',
 4362: 							      '',
 4363: 							      $isNotMap,'',$symbFilter,
 4364: 							      $start_new_option) .
 4365: 				   &generate_resource_chooser('ALL_PROBLEMS_STUDENTS',
 4366: 							      'Select Problem(s) to print',
 4367: 							      'toponly="0" multichoice="1" suppressEmptySequences="0" addstatus="1" closeallpages="1" modallink="1"',
 4368: 							      'RESOURCES',
 4369: 							      'STUDENTS1',
 4370: 							      '',
 4371: 							      $isProblemOrMap,'' , $symbFilter,
 4372: 							      $start_new_option) .
 4373: 				     $suffixXml
 4374: 				   );
 4375: 
 4376: 	if ($helper->{VARS}->{'assignment'}) {
 4377: 
 4378: 	    # If we were looking at a page, allow a selection of problems from the page
 4379: 	    # either for selected students or for coded assignments.
 4380: 
 4381: 	    if ($page_ispage) {
 4382: 		push @{$printChoices}, [&mt('Selected [_1]Problems[_2] from page [_3] for [_4]selected people[_5]',
 4383: 					    '<b>', '</b>', '<b><i>'.$page_title.'</i></b>', '<b>', '</b>'),
 4384: 					'problems_for_students_from_page', 'CHOOSE_TGT_STUDENTS_PAGE'];
 4385: 		push @{$printChoices}, [&mt('Selected [_1]Problems[_2] from page [_3] for [_4]CODEd assignments[_5]',
 4386: 					    '<b>', '</b>', '<b><i>'.$page_title.'</i></b>', '<b>', '</b>'),
 4387: 					'problems_for_anon_page', 'CHOOSE_ANON1_PAGE'];
 4388: 	    }
 4389: 	    push @{$printChoices}, [&mt('Selected [_1]Problems[_2] from folder [_3] for [_4]selected people[_5]',
 4390: 					'<b>','</b>','<b><i>'.$sequenceTitle.'</i></b>','<b>','</b>'), 
 4391: 				    'problems_for_students', 'CHOOSE_STUDENTS'];
 4392: 	    push @{$printChoices}, [&mt('Selected [_1]Problems[_2] from folder [_3] for [_4]CODEd assignments[_5]',
 4393: 					'<b>','</b>','<b><i>'.$sequenceTitle.'</i></b>','<b>','</b>'), 
 4394: 				    'problems_for_anon', 'CHOOSE_ANON1'];
 4395: 	}
 4396: 
 4397: 	my $randomly_ordered_warning = 
 4398:             &get_randomly_ordered_warning($helper, $map);
 4399: 
 4400: 	# resource_selector will hold a few states that:
 4401: 	#   - Allow resources to be selected for printing.
 4402: 	#   - Determine pagination between assignments.
 4403: 	#   - Determine how many assignments should be bundled into a single PDF.
 4404:         # TODO:
 4405: 	#    Probably good to do things like separate this up into several vars, each
 4406: 	#    with one state, and use REGEXPs at inclusion time to set state names
 4407: 	#    and next states for better mix and match capability
 4408: 	#
 4409: 	my $resource_selector= &generate_resource_chooser('SELECT_PROBLEMS',
 4410: 							  'Select resources to print',
 4411: 							  'multichoice="1" addstatus="1" closeallpages="1" modallink="1"',
 4412: 							  'RESOURCES', 
 4413: 							  'PRINT_FORMATTING',
 4414: 							  $map,
 4415: 							  $isProblem, '', $symbFilter,
 4416: 							  $start_new_option);
 4417: 	$resource_selector .=  &generate_format_selector($helper,
 4418:                                                          'How should results be printed?',
 4419:                                                          'PRINT_FORMATTING').
 4420:                                &generate_resource_chooser('CHOOSE_STUDENTS_PAGE',
 4421: 							'Select Problem(s) to print',
 4422: 							"multichoice='1' addstatus='1' closeallpages ='1' modallink='1'",
 4423: 							'RESOURCES',
 4424: 							'PRINT_FORMATTING',
 4425: 							$url,
 4426: 							$isProblem, '',  $symbFilter,
 4427: 							$start_new_option);
 4428: 
 4429: 
 4430: # Generate student choosers.
 4431: 
 4432: 
 4433: 
 4434:         &Apache::lonxml::xmlparse($r, 'helper',
 4435: 				  &generate_student_chooser('CHOOSE_TGT_STUDENTS_PAGE',
 4436: 							    'student_sort',
 4437: 							    'STUDENTS',
 4438: 							    'CHOOSE_STUDENTS_PAGE'));
 4439: 	&Apache::lonxml::xmlparse($r, 'helper', 
 4440: 				  &generate_student_chooser('CHOOSE_STUDENTS',
 4441: 							    'student_sort',
 4442: 							    'STUDENTS',
 4443: 							    'SELECT_PROBLEMS'));
 4444: 	&Apache::lonxml::xmlparse($r, 'helper', $resource_selector);
 4445: 
 4446: 	my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
 4447: 	my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
 4448:         my @names=&Apache::lonnet::getkeys('CODEs',$cdom,$cnum);
 4449: 	my $namechoice='<choice></choice>';
 4450: 	foreach my $name (sort {uc($a) cmp uc($b)} @names) {
 4451: 	    if ($name =~ /^error: 2 /) { next; }
 4452: 	    if ($name =~ /^type\0/) { next; }
 4453: 	    $namechoice.='<choice computer="'.$name.'">'.$name.'</choice>';
 4454: 	}
 4455: 
 4456: 
 4457: 	my %code_values;
 4458: 	my %codes_to_print;
 4459: 	foreach my $key (@names) {
 4460: 	    %code_values = &Apache::grades::get_codes($key, $cdom, $cnum);
 4461: 	    foreach my $key (keys(%code_values)) {
 4462: 		$codes_to_print{$key} = 1;
 4463: 	    }
 4464: 	}
 4465: 
 4466: 	my $code_selection;
 4467: 	foreach my $code (sort {uc($a) cmp uc($b)} (keys(%codes_to_print))) {
 4468: 	    my $choice  = $code;
 4469: 	    if ($code =~ /^[A-Z]+$/) { # Alpha code
 4470: 		$choice = &letters_to_num($code);
 4471: 	    }
 4472: 	    push(@{$helper->{DATA}{ALL_CODE_CHOICES}},[$code,$choice]);
 4473: 	}
 4474: 	if (%codes_to_print) {
 4475: 	    $code_selection .='   
 4476: 	    <message><b>Choose single CODE from list:</b></message>
 4477: 		<message></td><td></message>
 4478: 		<dropdown variable="CODE_SELECTED_FROM_LIST" multichoice="0" allowempty="0">
 4479:                   <choice></choice>
 4480:                   <exec>
 4481:                      push(@{$state->{CHOICES}},@{$helper->{DATA}{ALL_CODE_CHOICES}});
 4482:                   </exec>
 4483: 		</dropdown>
 4484: 	    <message></td></tr><tr><td></message>
 4485:             '.$/;
 4486: 
 4487: 	}
 4488: 
 4489:         my @lines = &Apache::grades::get_scantronformat_file();
 4490: 	my $codechoice='';
 4491: 	foreach my $line (@lines) {
 4492:             next if (($line =~ /^\#/) || ($line eq ''));
 4493: 	    my ($name,$description,$code_type,$code_length)=
 4494: 		(split(/:/,$line))[0,1,2,4];
 4495: 	    if ($code_length > 0 && 
 4496: 		$code_type =~/^(letter|number|-1)/) {
 4497: 		$codechoice.='<choice computer="'.$name.'">'.$description.'</choice>';
 4498: 	    }
 4499: 	}
 4500: 	if ($codechoice eq '') {
 4501: 	    $codechoice='<choice computer="default">Default</choice>';
 4502: 	}
 4503: 	my $anon1 = &generate_code_selector($helper, 
 4504: 					    'CHOOSE_ANON1',
 4505: 					    'SELECT_PROBLEMS',
 4506: 					    $codechoice,
 4507: 					    $code_selection,
 4508: 					    $namechoice) . $resource_selector;
 4509: 					    
 4510: 					    
 4511:         &Apache::lonxml::xmlparse($r, 'helper',$anon1);
 4512: 
 4513: 	my $anon_page = &generate_code_selector($helper,
 4514: 						'CHOOSE_ANON1_PAGE',
 4515: 						'SELECT_PROBLEMS_PAGE',
 4516: 						$codechoice,
 4517: 						$code_selection,
 4518: 						$namechoice) .
 4519: 			&generate_resource_chooser('SELECT_PROBLEMS_PAGE',
 4520: 						   'Select Problem(s) to print',
 4521: 						   "multichoice='1' addstatus='1' closeallpages ='1' modallink='1'",
 4522: 						   'RESOURCES',
 4523: 						   'PRINT_FORMATTING',
 4524: 						   $url,
 4525: 						   $isProblem, '',  $symbFilter,
 4526: 						   $start_new_option);
 4527: 	&Apache::lonxml::xmlparse($r, 'helper', $anon_page);
 4528: 
 4529: 
 4530: 	if ($helper->{VARS}->{'assignment'}) {
 4531: 
 4532: 	    # Assignment printing:
 4533: 
 4534: 	    push @{$printChoices}, [&mt('Selected [_1]Resources[_2] from folder [_3] for [_4]selected people[_5]','<b>','</b>','<b><i>'.$sequenceTitle.'</i></b>','<b>','</b>'), 'resources_for_students', 'CHOOSE_STUDENTS1'];
 4535: 	    push @{$printChoices}, [&mt('Selected [_1]Resources[_2] from folder [_3] for [_4]CODEd assignments[_5]','<b>','</b>','<b><i>'.$sequenceTitle.'</i></b>','<b>','</b>'), 'resources_for_anon', 'CHOOSE_ANON2'];
 4536: 	}
 4537: 	    
 4538: 
 4539: 	$resource_selector=<<RESOURCE_SELECTOR;
 4540:     <state name="SELECT_RESOURCES" title="Select Resources">
 4541:     $randomly_ordered_warning
 4542:     <nextstate>PRINT_FORMATTING</nextstate>
 4543:     <message><br /><big><i><b>Select resources for the assignment</b></i></big><br /></message>
 4544:     <resource variable="RESOURCES" multichoice="1" addstatus="1" 
 4545:               closeallpages="1" modallink="1">
 4546:       <filterfunc>return $isNotMap;</filterfunc>
 4547:       <mapurl>$map</mapurl>
 4548:       <valuefunc>return $symbFilter;</valuefunc>
 4549:       $start_new_option
 4550:       </resource>
 4551:     </state>
 4552: RESOURCE_SELECTOR
 4553: 
 4554:         $resource_selector .= &generate_format_selector($helper,
 4555:                                                         'Format of the print job',
 4556:                                                         'PRINT_FORMATTING');
 4557: 	&Apache::lonxml::xmlparse($r, 'helper', <<CHOOSE_STUDENTS1);
 4558:   <state name="CHOOSE_STUDENTS1" title="Select Students and Resources">
 4559:     <choices variable='student_sort'>
 4560:       <choice computer='0'>Sort by section then student</choice>
 4561:       <choice computer='1'>Sort by students across sections.</choice>
 4562:     </choices>
 4563:     <message><br /><hr /><br /></message>
 4564:     <student multichoice='1' variable="STUDENTS" nextstate="SELECT_RESOURCES" coursepersonnel="1" />
 4565: 
 4566:     </state>
 4567:     $resource_selector
 4568: CHOOSE_STUDENTS1
 4569: 
 4570: 	&Apache::lonxml::xmlparse($r, 'helper', <<CHOOSE_ANON2);
 4571:   <state name="CHOOSE_ANON2" title="Select CODEd Assignments">
 4572:     <nextstate>SELECT_RESOURCES</nextstate>
 4573:     <message><h4>Fill out one of the forms below</h4></message>
 4574:     <message><br /><hr /> <br /></message>
 4575:     <message><h3>Generate new CODEd Assignments</h3></message>
 4576:     <message><table><tr><td><b>Number of CODEd assignments to print:</b></td><td></message>
 4577:     <string variable="NUMBER_TO_PRINT_TOTAL" maxlength="5" size="5"  noproceed="1">
 4578:        <validator>
 4579: 	if (((\$helper->{'VARS'}{'NUMBER_TO_PRINT_TOTAL'}+0) < 1) &&
 4580: 	    !\$helper->{'VARS'}{'REUSE_OLD_CODES'}                &&
 4581: 	    !\$helper->{'VARS'}{'SINGLE_CODE'}                   &&
 4582: 	    !\$helper->{'VARS'}{'CODE_SELECTED_FROM_LIST'}) {
 4583: 	    return "You need to specify the number of assignments to print";
 4584: 	}
 4585:         if (((\$helper->{'VARS'}{'NUMBER_TO_PRINT_TOTAL'}+0) >= 1)  &&
 4586:              (\$helper->{'VARS'}{'SINGLE_CODE'} ne '') ) {
 4587:             return 'Specifying number of codes to print and a specific code is not compatible';
 4588:         }
 4589: 	return undef;
 4590:        </validator>
 4591:     </string>
 4592:     <message></td></tr><tr><td></message>
 4593:     <message><b>Names to save the CODEs under for later:</b></message>
 4594:     <message></td><td></message>
 4595:     <string variable="ANON_CODE_STORAGE_NAME" maxlength="50" size="20" />
 4596:     <message></td></tr><tr><td></message>
 4597:     <message><b>Bubblesheet type:</b></message>
 4598:     <message></td><td></message>
 4599:     <dropdown variable="CODE_OPTION" multichoice="0" allowempty="0">
 4600:     $codechoice
 4601:     </dropdown>
 4602:     <message></td></tr><tr><td></table></message>
 4603:     <message><br /><hr /><h3>Print a Specific CODE </h3><br /><table></message>
 4604:     <message><tr><td><b>Enter a CODE to print:</b></td><td></message>
 4605:     <string variable="SINGLE_CODE" size="10">
 4606:         <validator>
 4607: 	   if(!\$helper->{'VARS'}{'NUMBER_TO_PRINT_TOTAL'}           &&
 4608: 	      !\$helper->{'VARS'}{'REUSE_OLD_CODES'}                 &&
 4609: 	      !\$helper->{'VARS'}{'CODE_SELECTED_FROM_LIST'}) {
 4610: 	      return &Apache::lonprintout::is_code_valid(\$helper->{'VARS'}{'SINGLE_CODE'},
 4611: 						      \$helper->{'VARS'}{'CODE_OPTION'});
 4612: 	  } elsif (\$helper->{'VARS'}{'SINGLE_CODE'} ne ''){
 4613: 	      return 'Specifying a code name is incompatible specifying number of codes.';
 4614: 	   } else {
 4615: 	       return undef;	# Other forces control us.
 4616: 	   }
 4617:         </validator>
 4618:     </string>
 4619:     <message></td></tr><tr><td></message>
 4620:         $code_selection
 4621:     <message></td></tr></table></message>
 4622:     <message><hr /><h3>Reprint a Set of Saved CODEs</h3><table><tr><td></message>
 4623:     <message><b>Select saved CODEs:</b></message>
 4624:     <message></td><td></message>
 4625:     <dropdown variable="REUSE_OLD_CODES">
 4626:         $namechoice
 4627:     </dropdown>
 4628:     <message></td></tr></table></message>
 4629:   </state>
 4630:     $resource_selector
 4631: CHOOSE_ANON2
 4632:     }
 4633: 
 4634:     # FIXME: That RE should come from a library somewhere.
 4635:     if (($perm{'pav'} 
 4636: 	&& $subdir ne $Apache::lonnet::perlvar{'lonDocRoot'}.'/res/'
 4637: 	&& (defined($helper->{'VARS'}->{'construction'})
 4638: 	    ||
 4639: 	    (&Apache::lonnet::allowed('bre',$subdir) eq 'F'
 4640: 	     && 
 4641: 	     $helper->{VARS}->{'postdata'}=~/\.(problem|exam|quiz|assess|survey|form|library|page|xml|html|htm|xhtml|xhtm)/)
 4642: 	    )) 
 4643: 	&& $helper->{VARS}->{'assignment'} eq ""
 4644: 	) {
 4645: 	my $pretty_dir = &Apache::lonnet::hreflocation($subdir);
 4646:         push @{$printChoices}, [&mt('Selected [_1]Problems[_2] from current subdirectory [_3]','<b>','</b>','<b><i>'.$pretty_dir.'</i></b>','<b>','</b>'), 'problems_from_directory', 'CHOOSE_FROM_SUBDIR'];
 4647:         my $xmlfrag = <<CHOOSE_FROM_SUBDIR;
 4648:   <state name="CHOOSE_FROM_SUBDIR" title="Select File(s) from <b><small>$pretty_dir</small></b> to print">
 4649: 
 4650:     <files variable="FILES" multichoice='1'>
 4651:       <nextstate>PAGESIZE</nextstate>
 4652:       <filechoice>return '$subdir';</filechoice>
 4653: CHOOSE_FROM_SUBDIR
 4654:         
 4655:         # this is broken up because I really want interpolation above,
 4656:         # and I really DON'T want it below
 4657:         $xmlfrag .= <<'CHOOSE_FROM_SUBDIR';
 4658:       <filefilter>return Apache::lonhelper::files::not_old_version($filename) &&
 4659: 	  $filename =~ m/\.(problem|exam|quiz|assess|survey|form|library)$/;
 4660:       </filefilter>
 4661:       </files>
 4662:     </state>
 4663: CHOOSE_FROM_SUBDIR
 4664:         &Apache::lonxml::xmlparse($r, 'helper', $xmlfrag);
 4665:     }
 4666: 
 4667:     # Allow the user to select any sequence in the course, feed it to
 4668:     # another resource selector for that sequence
 4669:     if (!$helper->{VARS}->{'construction'} && !$is_published) {
 4670: 	push @$printChoices, [&mtn("Selected <b>Resources</b> from <b>selected folder</b> in course"),
 4671: 			      'select_sequences', 'CHOOSE_SEQUENCE'];
 4672: 	my $escapedSequenceName = $helper->{VARS}->{'SEQUENCE'};
 4673: 	#Escape apostrophes and backslashes for Perl
 4674: 	$escapedSequenceName =~ s/\\/\\\\/g;
 4675: 	$escapedSequenceName =~ s/'/\\'/g;
 4676: 	&Apache::lonxml::xmlparse($r, 'helper', <<CHOOSE_FROM_ANY_SEQUENCE);
 4677:   <state name="CHOOSE_SEQUENCE" title="Select Sequence To Print From">
 4678:     <message>Select the sequence to print resources from:</message>
 4679:     <resource variable="SEQUENCE">
 4680:       <nextstate>CHOOSE_FROM_ANY_SEQUENCE</nextstate>
 4681:       <filterfunc>return &Apache::lonprintout::printable_sequence(\$res);</filterfunc>
 4682:       <valuefunc>return $urlValue;</valuefunc>
 4683:       <choicefunc>return \$res->hasResource(\$res,sub { return !\$_[0]->is_sequence() },0,0);
 4684: 	</choicefunc>
 4685:       </resource>
 4686:     </state>
 4687:   <state name="CHOOSE_FROM_ANY_SEQUENCE" title="Select Resources To Print">
 4688:     <message>(mark desired resources then click "next" button) <br /></message>
 4689:     <resource variable="RESOURCES" multichoice="1" toponly='1' addstatus="1"
 4690:               closeallpages="1" modallink="1">
 4691:       <nextstate>PAGESIZE</nextstate>
 4692:       <filterfunc>return $isNotMap</filterfunc>
 4693:       <mapurl evaluate='1'>return '$escapedSequenceName';</mapurl>
 4694:       <valuefunc>return $symbFilter;</valuefunc>
 4695:       $start_new_option
 4696:       </resource>
 4697:     </state>
 4698: CHOOSE_FROM_ANY_SEQUENCE
 4699: }
 4700: 
 4701:     # Generate the first state, to select which resources get printed.
 4702:     Apache::lonhelper::state->new("START", "Select Printing Options:");
 4703:     if (!$res_printable) {
 4704:         my $now = time;
 4705:         my $shownprintstart = &Apache::lonlocal::locallocaltime($res_printstartdate);
 4706:         my $shownprintend = &Apache::lonlocal::locallocaltime($res_printenddate);
 4707:         my $noprintmsg;
 4708:         if (($res_printenddate) && ($res_printenddate < $now)) {
 4709:                 $noprintmsg = &mt('Printing for current resource no longer available (ended: [_1])',
 4710:                                   $shownprintend);
 4711:         } else {
 4712:             if (($res_printstartdate) && ($res_printstartdate > $now)) {
 4713:                 if (($res_printenddate) && ($res_printenddate > $now) && ($res_printenddate > $res_printstartdate)) {
 4714:                     $noprintmsg = &mt('Printing for current resource is only possible between [_1] and [_2]',
 4715:                                   $shownprintstart,$shownprintend);
 4716:                 } elsif (!$res_printenddate) {
 4717:                     $noprintmsg = &mt('Printing for current resource will only be possible starting [_1]',
 4718:                                       $shownprintstart);
 4719:                 } else {
 4720:                     $noprintmsg = &mt('Printing for current resource is unavailable');
 4721:                 }
 4722:             }
 4723:         }
 4724: 
 4725:         if ($noprintmsg) {
 4726:             $paramHash = Apache::lonhelper::getParamHash();
 4727: 	    $paramHash->{MESSAGE_TEXT} = 
 4728:                 '<p class="LC_info">'.$noprintmsg.'</p>';
 4729: 	    Apache::lonhelper::message->new();
 4730:         }
 4731:     }
 4732:     $paramHash = Apache::lonhelper::getParamHash();
 4733:     $paramHash = Apache::lonhelper::getParamHash();
 4734:     $paramHash->{MESSAGE_TEXT} = "";
 4735:     Apache::lonhelper::message->new();
 4736:     $paramHash = Apache::lonhelper::getParamHash();
 4737:     $paramHash->{'variable'} = 'PRINT_TYPE';
 4738:     $paramHash->{CHOICES} = $printChoices;
 4739:     Apache::lonhelper::choices->new();
 4740: 
 4741:     my $startedTable = 0; # have we started an HTML table yet? (need
 4742:                           # to close it later)
 4743: 
 4744:     if (($perm{'pav'} and $perm{'vgr'}) or 
 4745: 	($helper->{VARS}->{'construction'} eq '1')) {
 4746: 	&addMessage('<br />'
 4747:                    .'<h3>'.&mt('Print Options').'</h3>'
 4748:                    .&Apache::lonhtmlcommon::start_pick_box()
 4749:                    .&Apache::lonhtmlcommon::row_title(
 4750:                        '<label for="ANSWER_TYPE_forminput">'
 4751:                       .&mt('Print Answers')
 4752:                       .'</label>'
 4753:                     )
 4754:         );
 4755:         $paramHash = Apache::lonhelper::getParamHash();
 4756: 	$paramHash->{'variable'} = 'ANSWER_TYPE';   
 4757: 	$helper->declareVar('ANSWER_TYPE');         
 4758:         $paramHash->{CHOICES} = [
 4759:                                    ['Without Answers', 'yes'],
 4760:                                    ['With Answers', 'no'],
 4761:                                    ['Only Answers', 'only']
 4762:                                 ];
 4763:         Apache::lonhelper::dropdown->new();
 4764: 	&addMessage(&Apache::lonhtmlcommon::row_closure());
 4765: 	$startedTable = 1;
 4766: 
 4767: #
 4768: #  Select font size.
 4769: #
 4770: 
 4771:             $helper->declareVar('fontsize');
 4772:             &addMessage(&Apache::lonhtmlcommon::row_title(&mt('Font Size')));
 4773:             my $xmlfrag = << "FONT_SELECTION";
 4774: 
 4775:           
 4776:             <dropdown variable='fontsize' multichoice='0', allowempty='0'>
 4777:             <defaultvalue>
 4778: 		  return 'normalsize';
 4779:             </defaultvalue>
 4780:             <choice computer='tiny'>Tiny</choice>
 4781:             <choice computer='sub/superscriptsize'>Script Size</choice>
 4782:             <choice computer='footnotesize'>Footnote Size</choice>
 4783:             <choice computer='small'>Small</choice>
 4784:             <choice computer='normalsize'>Normal (default)</choice>
 4785:             <choice computer='large'>larger than normal</choice>
 4786:             <choice computer='Large'>Even larger than normal</choice>
 4787:             <choice computer='LARGE'>Still larger than normal</choice>
 4788:             <choice computer='huge'>huge font size</choice>
 4789:             <choice computer='Huge'>Largest possible size</choice>
 4790:             </dropdown>
 4791: FONT_SELECTION
 4792:             &Apache::lonxml::xmlparse($r, 'helper', $xmlfrag);
 4793:             &addMessage(&Apache::lonhtmlcommon::row_closure(1));
 4794:     }
 4795: 
 4796:     if ($perm{'pav'}) {
 4797: 	if (!$startedTable) {
 4798: 	    addMessage("<hr width='33%' /><table><tr><td align='right'>".
 4799:                        '<label for="LATEX_TYPE_forminput">'.
 4800:                        &mt('LaTeX mode').
 4801:                        "</label>: </td><td>");
 4802: 	    $startedTable = 1;
 4803: 	} else {
 4804: 	    &addMessage(&Apache::lonhtmlcommon::row_title(
 4805:                            '<label for="LATEX_TYPE_forminput">'
 4806:                            .&mt('LaTeX mode')
 4807:                            .'</label>'
 4808:                         )
 4809:             );
 4810: 	}
 4811:         $paramHash = Apache::lonhelper::getParamHash();
 4812: 	$paramHash->{'variable'} = 'LATEX_TYPE';   
 4813: 	$helper->declareVar('LATEX_TYPE');  
 4814: 	if ($helper->{VARS}->{'construction'} eq '1') {       
 4815: 	    $paramHash->{CHOICES} = [
 4816: 				     ['standard LaTeX mode', 'standard'], 
 4817: 				     ['LaTeX batchmode', 'batchmode'], ];
 4818: 	} else {
 4819: 	    $paramHash->{CHOICES} = [
 4820: 				     ['LaTeX batchmode', 'batchmode'],
 4821: 				     ['standard LaTeX mode', 'standard'] ];
 4822: 	}
 4823:         Apache::lonhelper::dropdown->new();
 4824:  
 4825: 	&addMessage(&Apache::lonhtmlcommon::row_closure()
 4826:                    .&Apache::lonhtmlcommon::row_title(
 4827:                         '<label for="TABLE_CONTENTS_forminput">'
 4828:                        .&mt('Print Table of Contents')
 4829:                        .'</label>'
 4830:                     )
 4831:         );
 4832:         $paramHash = Apache::lonhelper::getParamHash();
 4833: 	$paramHash->{'variable'} = 'TABLE_CONTENTS';   
 4834: 	$helper->declareVar('TABLE_CONTENTS');         
 4835:         $paramHash->{CHOICES} = [
 4836:                                    ['No', 'no'],
 4837:                                    ['Yes', 'yes'] ];
 4838:         Apache::lonhelper::dropdown->new();
 4839: 	&addMessage(&Apache::lonhtmlcommon::row_closure());
 4840:         
 4841: 	if (not $helper->{VARS}->{'construction'}) {
 4842: 	    &addMessage(&Apache::lonhtmlcommon::row_title(
 4843:                             '<label for="TABLE_INDEX_forminput">'
 4844:                            .&mt('Print Index')
 4845:                            .'</label>'
 4846:                         )
 4847:             );
 4848: 	    $paramHash = Apache::lonhelper::getParamHash();
 4849: 	    $paramHash->{'variable'} = 'TABLE_INDEX';   
 4850: 	    $helper->declareVar('TABLE_INDEX');         
 4851: 	    $paramHash->{CHOICES} = [
 4852: 				     ['No', 'no'],
 4853: 				     ['Yes', 'yes'] ];
 4854: 	    Apache::lonhelper::dropdown->new();
 4855:             &addMessage(&Apache::lonhtmlcommon::row_closure());
 4856:             &addMessage(&Apache::lonhtmlcommon::row_title(
 4857:                             '<label for="PRINT_DISCUSSIONS_forminput">'
 4858:                            .&mt('Print Discussions')
 4859:                            .'</label>'
 4860:                         )
 4861:             );
 4862: 	    $paramHash = Apache::lonhelper::getParamHash();
 4863: 	    $paramHash->{'variable'} = 'PRINT_DISCUSSIONS';   
 4864: 	    $helper->declareVar('PRINT_DISCUSSIONS');         
 4865: 	    $paramHash->{CHOICES} = [
 4866: 				     ['No', 'no'],
 4867: 				     ['Yes', 'yes'] ];
 4868: 	    Apache::lonhelper::dropdown->new();
 4869:             &addMessage(&Apache::lonhtmlcommon::row_closure());
 4870: 
 4871: 	    # Prompt for printing annotations too.
 4872: 		
 4873: 	    &addMessage(&Apache::lonhtmlcommon::row_title(
 4874:                             '<label for="PRINT_ANNOTATIONS_forminput">'
 4875:                            .&mt('Print Annotations')
 4876:                            .'</label>'
 4877:                         )
 4878:             );
 4879: 	    $paramHash = Apache::lonhelper::getParamHash();
 4880: 	    $paramHash->{'variable'} = "PRINT_ANNOTATIONS";
 4881: 	    $helper->declareVar("PRINT_ANNOTATIONS");
 4882: 	    $paramHash->{CHOICES} = [
 4883: 				     ['No', 'no'],
 4884: 				     ['Yes', 'yes']];
 4885: 	    Apache::lonhelper::dropdown->new();
 4886:             &addMessage(&Apache::lonhtmlcommon::row_closure());
 4887: 
 4888:             &addMessage(&Apache::lonhtmlcommon::row_title(&mt('Foils')));
 4889: 	    $paramHash = Apache::lonhelper::getParamHash();
 4890: 	    $paramHash->{'multichoice'} = "true";
 4891: 	    $paramHash->{'allowempty'}  = "true";
 4892: 	    $paramHash->{'variable'}   = "showallfoils";
 4893: 	    $paramHash->{'CHOICES'} = [ [&mt('Show All Foils'), "1"] ];
 4894: 	    Apache::lonhelper::choices->new();
 4895:             &addMessage(&Apache::lonhtmlcommon::row_closure(1));
 4896: 	}
 4897: 
 4898: 	if ($helper->{'VARS'}->{'construction'}) { 
 4899: 	    my $stylevalue='$Apache::lonnet::env{"construct.style"}';
 4900:             my $randseedtext=&mt("Use random seed");
 4901:             my $stylefiletext=&mt("Use style file");
 4902:             my $selectfiletext=&mt("Select style file");
 4903: 
 4904: 	    my $xmlfrag .= '<message>'
 4905:             .&Apache::lonhtmlcommon::row_title('<label for="curseed_forminput">'
 4906:                                               .$randseedtext
 4907:                                               .'</label>'
 4908:              )
 4909:             .'</message>
 4910:             <string variable="curseed" size="15" maxlength="15">
 4911:                 <defaultvalue>
 4912:                    return '.$helper->{VARS}->{'curseed'}.';
 4913:                 </defaultvalue>'
 4914:             .'</string>'
 4915:             .'<message>'
 4916:             .&Apache::lonhtmlcommon::row_closure()
 4917:             .&Apache::lonhtmlcommon::row_title('<label for="style_file">'
 4918:                                               .$stylefiletext
 4919:                                               .'</label>'
 4920:              )
 4921:             .'</message>
 4922:              <string variable="style_file" size="40">
 4923:                 <defaultvalue>
 4924:                     return '.$stylevalue.';
 4925:                 </defaultvalue>
 4926:              </string><message>&nbsp;'
 4927: .qq|<a href="javascript:openbrowser('helpform','style_file_forminput','sty')">|
 4928: .$selectfiletext.'</a>'
 4929:             .&Apache::lonhtmlcommon::row_closure()
 4930:             .&Apache::lonhtmlcommon::row_title(&mt('Show All Foils'))
 4931:             .'</message>
 4932: 	     <choices allowempty="1" multichoice="true" variable="showallfoils">
 4933:                 <choice computer="1">&nbsp;</choice>
 4934:              </choices>'
 4935: 	    .'<message>'
 4936:             .&Apache::lonhtmlcommon::row_closure()
 4937:             .'</message>';
 4938:             &Apache::lonxml::xmlparse($r, 'helper', $xmlfrag);
 4939: 
 4940: 
 4941:             &addMessage(&Apache::lonhtmlcommon::row_title(&mt('Problem Type')));
 4942: 	    #
 4943: 	    # Initial value from construction space:
 4944: 	    #
 4945: 	    if (!$helper->{VARS}->{'probstatus'} && $env{'form.problemtype'}) {
 4946: 		$helper->{VARS}->{'probstatus'} = $env{'form.problemtype'};	# initial value
 4947: 	    }
 4948: 	    $xmlfrag = << "PROBTYPE";
 4949: 		<dropdown variable="probstatus" multichoice="0" allowempty="0">
 4950: 		   <defaultvalue>
 4951: 		      return "$helper->{VARS}->{'probstatus'}";
 4952:                    </defaultvalue>
 4953: 		   <choice computer="problem">Homework Problem</choice>
 4954: 		   <choice computer="exam">Bubblesheet Exam Problem</choice>
 4955: 		   <choice computer="survey">Survey question</choice>
 4956:                    ,choice computer="anonsurvey"Anonymous survey question</choice>
 4957: 		</dropdown>
 4958: PROBTYPE
 4959:             &Apache::lonxml::xmlparse($r, 'helper', $xmlfrag);
 4960:             &addMessage(&Apache::lonhtmlcommon::row_closure(1));
 4961: 
 4962: 
 4963: 
 4964:         }
 4965:     }
 4966: 
 4967: 
 4968: 
 4969: 
 4970:     if ($startedTable) {
 4971:         &addMessage(&Apache::lonhtmlcommon::end_pick_box());
 4972:     }
 4973: 
 4974:     Apache::lonprintout::page_format_state->new("FORMAT");
 4975: 
 4976:     # Generate the PAGESIZE state which will offer the user the margin
 4977:     # choices if they select one column
 4978:     Apache::lonhelper::state->new("PAGESIZE", "Set Margins");
 4979:     Apache::lonprintout::page_size_state->new('pagesize', 'FORMAT', 'FINAL');
 4980: 
 4981: 
 4982:     $helper->process();
 4983: 
 4984: 
 4985:     # MANUAL BAILOUT CONDITION:
 4986:     # If we're in the "final" state, bailout and return to handler
 4987:     if ($helper->{STATE} eq 'FINAL') {
 4988:         return $helper;
 4989:     }    
 4990: 
 4991:     my $footer;
 4992:     if ($helper->{STATE} eq 'START') {
 4993:         my $prtspool=$r->dir_config('lonPrtDir'); 
 4994: 	$footer = &recently_generated($prtspool);
 4995:     }
 4996:     $r->print($helper->display($footer));
 4997:     &Apache::lonhelper::unregisterHelperTags();
 4998: 
 4999:     return OK;
 5000: }
 5001: 
 5002: 
 5003: 1;
 5004: 
 5005: package Apache::lonprintout::page_format_state;
 5006: 
 5007: =pod
 5008: 
 5009: =head1 Helper element: page_format_state
 5010: 
 5011: See lonhelper.pm documentation for discussion of the helper framework.
 5012: 
 5013: Apache::lonprintout::page_format_state is an element that gives the 
 5014: user an opportunity to select the page layout they wish to print 
 5015: with: Number of columns, portrait/landscape, and paper size. If you 
 5016: want to change the paper size choices, change the @paperSize array 
 5017: contents in this package.
 5018: 
 5019: page_format_state is always directly invoked in lonprintout.pm, so there
 5020: is no tag interface. You actually pass parameters to the constructor.
 5021: 
 5022: =over 4
 5023: 
 5024: =item * B<new>(varName): varName is where the print information will be stored in the format FIXME.
 5025: 
 5026: =back
 5027: 
 5028: =cut
 5029: 
 5030: use Apache::lonhelper;
 5031: 
 5032: no strict;
 5033: @ISA = ("Apache::lonhelper::element");
 5034: use strict;
 5035: use Apache::lonlocal;
 5036: use Apache::lonnet;
 5037: 
 5038: my $maxColumns = 2;
 5039: # it'd be nice if these all worked
 5040: #my @paperSize = ("letter [8 1/2x11 in]", "legal [8 1/2x14 in]", 
 5041: #                 "tabloid (ledger) [11x17 in]", "executive [7 1/2x10 in]",
 5042: #                 "a2 [420x594 mm]", "a3 [297x420 mm]", "a4 [210x297 mm]", 
 5043: #                 "a5 [148x210 mm]", "a6 [105x148 mm]" );
 5044: my @paperSize = ("letter [8 1/2x11 in]", "legal [8 1/2x14 in]", 
 5045: 		 "a4 [210x297 mm]");
 5046: 
 5047: # Tentative format: Orientation (L = Landscape, P = portrait) | Colnum |
 5048: #                   Paper type
 5049: 
 5050: sub new { 
 5051:     my $self = Apache::lonhelper::element->new();
 5052: 
 5053:     shift;
 5054: 
 5055:     $self->{'variable'} = shift;
 5056:     my $helper = Apache::lonhelper::getHelper();
 5057:     $helper->declareVar($self->{'variable'});
 5058:     bless($self);
 5059:     return $self;
 5060: }
 5061: 
 5062: sub render {
 5063:     my $self = shift;
 5064:     my $helper = Apache::lonhelper::getHelper();
 5065:     my $result = '';
 5066:     my $var = $self->{'variable'};
 5067:     my $PageLayout=&mt('Page layout');
 5068:     my $NumberOfColumns=&mt('Number of columns');
 5069:     my $PaperType=&mt('Paper type');
 5070:     my $landscape=&mt('Landscape');
 5071:     my $portrait=&mt('Portrait');
 5072:     my $pdfFormLabel=&mt('PDF Form Fields');
 5073:     my $with=&mt('with Form Fields');
 5074:     my $without=&mt('without Form Fields');
 5075:     
 5076: 
 5077:     $result.='<h3>'.&mt('Layout Options').'</h3>'
 5078:             .&Apache::loncommon::start_data_table()
 5079:             .&Apache::loncommon::start_data_table_header_row()
 5080:             .'<th>'.$PageLayout.'</th>'
 5081:             .'<th>'.$NumberOfColumns.'</th>'
 5082:             .'<th>'.$PaperType.'</th>'
 5083:             .'<th>'.$pdfFormLabel.'</th>'
 5084:             .&Apache::loncommon::end_data_table_header_row()
 5085:             .&Apache::loncommon::start_data_table_row()
 5086:     .'<td>'
 5087:     .'<label><input type="radio" name="'.${var}.'.layout" value="L" />'.$landscape.'</label><br />'
 5088:     .'<label><input type="radio" name="'.${var}.'.layout" value="P" checked="checked" />'.$portrait.'</label>'
 5089:     .'</td>';
 5090: 
 5091:     $result.='<td align="center">'
 5092:             .'<select name="'.${var}.'.cols">';
 5093: 
 5094:     my $i;
 5095:     for ($i = 1; $i <= $maxColumns; $i++) {
 5096:         if ($i == 2) {
 5097:             $result .= '<option value="'.$i.'" selected="selected">'.$i.'</option>'."\n";
 5098:         } else {
 5099:             $result .= '<option value="'.$i.'">'.$i.'</option>'."\n";
 5100:         }
 5101:     }
 5102: 
 5103:     $result .= "</select></td><td>\n";
 5104:     $result .= "<select name='${var}.paper'>\n";
 5105: 
 5106:     my %parmhash=&Apache::lonnet::coursedescription($env{'request.course.id'});
 5107:     my $DefaultPaperSize=lc($parmhash{'default_paper_size'});
 5108:     $DefaultPaperSize=~s/\s//g;
 5109:     if ($DefaultPaperSize eq '') {$DefaultPaperSize='letter';}
 5110:     $i = 0;
 5111:     foreach (@paperSize) {
 5112: 	$_=~/(\w+)/;
 5113: 	my $papersize=$1;
 5114:         if ($paperSize[$i]=~/$DefaultPaperSize/) {
 5115:             $result .= '<option selected="selected" value="'.$papersize.'">'.$paperSize[$i].'</option>'."\n";
 5116:         } else {
 5117:             $result .= '<option value="'.$papersize.'">'.$paperSize[$i].'</option>'."\n";
 5118:         }
 5119:         $i++;
 5120:     }
 5121:     $result .= <<HTML;
 5122:         </select>
 5123:     </td>
 5124:     <td align='center'>
 5125:         <select name='${var}.pdfFormFields'>
 5126:             <option selected="selected" value="no">$without</option>
 5127:             <option value="yes">$with</option>
 5128:         </select>
 5129:     </td>
 5130: HTML
 5131:     $result.=&Apache::loncommon::end_data_table_row()
 5132:             .&Apache::loncommon::end_data_table();
 5133: 
 5134:     return $result;
 5135: }
 5136: 
 5137: sub postprocess {
 5138:     my $self = shift;
 5139: 
 5140:     my $var = $self->{'variable'};
 5141:     my $helper = Apache::lonhelper->getHelper();
 5142:     $helper->{VARS}->{$var} = 
 5143:         $env{"form.$var.layout"} . '|' . $env{"form.$var.cols"} . '|' .
 5144:         $env{"form.$var.paper"} . '|' . $env{"form.$var.pdfFormFields"};
 5145:     return 1;
 5146: }
 5147: 
 5148: 1;
 5149: 
 5150: package Apache::lonprintout::page_size_state;
 5151: 
 5152: =pod
 5153: 
 5154: =head1 Helper element: page_size_state
 5155: 
 5156: See lonhelper.pm documentation for discussion of the helper framework.
 5157: 
 5158: Apache::lonprintout::page_size_state is an element that gives the 
 5159: user the opportunity to further refine the page settings if they
 5160: select a single-column page.
 5161: 
 5162: page_size_state is always directly invoked in lonprintout.pm, so there
 5163: is no tag interface. You actually pass parameters to the constructor.
 5164: 
 5165: =over 4
 5166: 
 5167: =item * B<new>(varName): varName is where the print information will be stored in the format FIXME.
 5168: 
 5169: =back
 5170: 
 5171: =cut
 5172: 
 5173: use Apache::lonhelper;
 5174: use Apache::lonnet;
 5175: no strict;
 5176: @ISA = ("Apache::lonhelper::element");
 5177: use strict;
 5178: 
 5179: 
 5180: 
 5181: sub new { 
 5182:     my $self = Apache::lonhelper::element->new();
 5183: 
 5184:     shift; # disturbs me (probably prevents subclassing) but works (drops
 5185:            # package descriptor)... - Jeremy
 5186: 
 5187:     $self->{'variable'} = shift;
 5188:     my $helper = Apache::lonhelper::getHelper();
 5189:     $helper->declareVar($self->{'variable'});
 5190: 
 5191:     # The variable name of the format element, so we can look into 
 5192:     # $helper->{VARS} to figure out whether the columns are one or two
 5193:     $self->{'formatvar'} = shift;
 5194: 
 5195: 
 5196:     $self->{NEXTSTATE} = shift;
 5197:     bless($self);
 5198: 
 5199:     return $self;
 5200: }
 5201: 
 5202: sub render {
 5203:     my $self = shift;
 5204:     my $helper = Apache::lonhelper::getHelper();
 5205:     my $result = '';
 5206:     my $var = $self->{'variable'};
 5207: 
 5208: 
 5209: 
 5210:     if (defined $self->{ERROR_MSG}) {
 5211:         $result .= '<br /><span class="LC_error">' . $self->{ERROR_MSG} . '</span><br />';
 5212:     }
 5213: 
 5214:     my $format = $helper->{VARS}->{$self->{'formatvar'}};
 5215: 
 5216:     # Use format to get sensible defaults for the margins:
 5217: 
 5218: 
 5219:     my ($laystyle, $cols, $papersize) = split(/\|/, $format);
 5220:     ($papersize)                      = split(/ /, $papersize);
 5221: 
 5222:     $laystyle = &Apache::lonprintout::map_laystyle($laystyle);
 5223: 
 5224: 
 5225: 
 5226:     my %size;
 5227:     ($size{'width_and_units'},
 5228:      $size{'height_and_units'},
 5229:      $size{'margin_and_units'})=
 5230: 	 &Apache::lonprintout::page_format($papersize, $laystyle, $cols);
 5231:     
 5232:     foreach my $dimension ('width','height','margin') {
 5233: 	($size{$dimension},$size{$dimension.'_unit'}) =
 5234: 	    split(/ +/, $size{$dimension.'_and_units'},2);
 5235:        	
 5236: 	foreach my $unit ('cm','in') {
 5237: 	    $size{$dimension.'_options'} .= '<option ';
 5238: 	    if ($size{$dimension.'_unit'} eq $unit) {
 5239: 		$size{$dimension.'_options'} .= 'selected="selected" ';
 5240: 	    }
 5241: 	    $size{$dimension.'_options'} .= '>'.$unit.'</option>';
 5242: 	}
 5243:     }
 5244: 
 5245:     # Adjust margin for LaTeX margin: .. requires units == cm or in.
 5246: 
 5247:     if ($size{'margin_unit'} eq 'in') {
 5248: 	$size{'margin'} += 1;
 5249:     }  else {
 5250: 	$size{'margin'} += 2.54;
 5251:     }
 5252:     my %lt = &Apache::lonlocal::texthash(
 5253:         'format' => 'How should each column be formatted?',
 5254:         'width'  => 'Width',
 5255:         'height' => 'Height',
 5256:         'margin' => 'Left Margin'
 5257:     );
 5258: 
 5259:     $result .= '<p>'.$lt{'format'}.'</p>'
 5260:               .&Apache::lonhtmlcommon::start_pick_box()
 5261:               .&Apache::lonhtmlcommon::row_title($lt{'width'})
 5262:               .'<input type="text" name="'.$var.'.width" value="'.$size{'width'}.'" size="4" />'
 5263:               .'<select name="'.$var.'.widthunit">'
 5264:               .$size{'width_options'}
 5265:               .'</select>'
 5266:               .&Apache::lonhtmlcommon::row_closure()
 5267:               .&Apache::lonhtmlcommon::row_title($lt{'height'})
 5268:               .'<input type="text" name="'.$var.'.height" value="'.$size{'height'}.'" size="4" />'
 5269:               .'<select name="'.$var.'.heightunit">'
 5270:               .$size{'height_options'}
 5271:               .'</select>'
 5272:               .&Apache::lonhtmlcommon::row_closure()
 5273:               .&Apache::lonhtmlcommon::row_title($lt{'margin'})
 5274:               .'<input type="text" name="'.$var.'.lmargin" value="'.$size{'margin'}.'" size="4" />'
 5275:               .'<select name="'.$var.'.lmarginunit">'
 5276:               .$size{'margin_options'}
 5277:               .'</select>'
 5278:               .&Apache::lonhtmlcommon::row_closure(1)
 5279:               .&Apache::lonhtmlcommon::end_pick_box();
 5280:     # <p>Hint: Some instructors like to leave scratch space for the student by
 5281:     # making the width much smaller than the width of the page.</p>
 5282: 
 5283:     return $result;
 5284: }
 5285: 
 5286: 
 5287: sub preprocess {
 5288:     my $self = shift;
 5289:     my $helper = Apache::lonhelper::getHelper();
 5290: 
 5291:     my $format = $helper->{VARS}->{$self->{'formatvar'}};
 5292: 
 5293:     #  If the user does not have 'pav' privilege, set default widths and
 5294:     #  on to the next state right away.
 5295:     #
 5296:     if (!$perm{'pav'}) {
 5297: 	my $var = $self->{'variable'};
 5298: 	my $format = $helper->{VARS}->{$self->{'formatvar'}};
 5299: 	
 5300: 	my ($laystyle, $cols, $papersize) = split(/\|/, $format);
 5301: 	($papersize)                      = split(/ /, $papersize);
 5302: 	
 5303: 	
 5304: 	$laystyle = &Apache::lonprintout::map_laystyle($laystyle);
 5305: 
 5306: 	#  Figure out some good defaults for the print out and set them:
 5307: 	
 5308: 	my %size;
 5309: 	($size{'width'},
 5310: 	 $size{'height'},
 5311: 	 $size{'lmargin'})=
 5312: 	     &Apache::lonprintout::page_format($papersize, $laystyle, $cols);
 5313: 	
 5314: 	foreach my $dim ('width', 'height', 'lmargin') {
 5315: 	    my ($value, $units) = split(/ /, $size{$dim});
 5316: 	    	    
 5317: 	    $helper->{VARS}->{"$var.".$dim}      = $value;
 5318: 	    $helper->{VARS}->{"$var.".$dim.'unit'} = $units;
 5319: 	    
 5320: 	}
 5321: 	
 5322: 
 5323: 	# Transition to the next state
 5324: 
 5325: 	$helper->changeState($self->{NEXTSTATE});
 5326:     }
 5327:    
 5328:     return 1;
 5329: }
 5330: 
 5331: sub postprocess {
 5332:     my $self = shift;
 5333: 
 5334:     my $var = $self->{'variable'};
 5335:     my $helper = Apache::lonhelper->getHelper();
 5336:     my $width = $helper->{VARS}->{$var .'.width'} = $env{"form.${var}.width"}; 
 5337:     my $height = $helper->{VARS}->{$var .'.height'} = $env{"form.${var}.height"}; 
 5338:     my $lmargin = $helper->{VARS}->{$var .'.lmargin'} = $env{"form.${var}.lmargin"}; 
 5339:     $helper->{VARS}->{$var .'.widthunit'} = $env{"form.${var}.widthunit"}; 
 5340:     $helper->{VARS}->{$var .'.heightunit'} = $env{"form.${var}.heightunit"}; 
 5341:     $helper->{VARS}->{$var .'.lmarginunit'} = $env{"form.${var}.lmarginunit"}; 
 5342: 
 5343:     my $error = '';
 5344: 
 5345:     # /^-?[0-9]+(\.[0-9]*)?$/ -> optional minus, at least on digit, followed 
 5346:     # by an optional period, followed by digits, ending the string
 5347: 
 5348:     if ($width !~  /^-?[0-9]*(\.[0-9]*)?$/) {
 5349:         $error .= "Invalid width; please type only a number.<br />\n";
 5350:     }
 5351:     if ($height !~  /^-?[0-9]*(\.[0-9]*)?$/) {
 5352:         $error .= "Invalid height; please type only a number.<br />\n";
 5353:     }
 5354:     if ($lmargin !~  /^-?[0-9]*(\.[0-9]*)?$/) {
 5355:         $error .= "Invalid left margin; please type only a number.<br />\n";
 5356:     } else {
 5357: 	# Adjust for LaTeX 1.0 inch margin:
 5358: 
 5359: 	if ($env{"form.${var}.lmarginunit"} eq "in") {
 5360: 	    $helper->{VARS}->{$var.'.lmargin'} = $lmargin - 1;
 5361: 	} else {
 5362: 	    $helper->{VARS}->{$var.'.lmargin'} = $lmargin - 2.54;
 5363: 	}
 5364:     }
 5365: 
 5366:     if (!$error) {
 5367:         Apache::lonhelper::getHelper()->changeState($self->{NEXTSTATE});
 5368:         return 1;
 5369:     } else {
 5370:         $self->{ERROR_MSG} = $error;
 5371:         return 0;
 5372:     }
 5373: }
 5374: 
 5375: __END__
 5376: 

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