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Diff for /loncom/interface/lonprintout.pm between versions 1.59 and 1.495

version 1.59, 2002/09/10 20:14:35 version 1.495, 2007/01/15 11:53:50
Line 1 Line 1
   #
 # The LearningOnline Network  # The LearningOnline Network
 # Printout  # Printout
 #  #
Line 22 Line 23
 # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA  # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 #  #
 # /home/httpd/html/adm/gpl.txt  # /home/httpd/html/adm/gpl.txt
 #  
 # http://www.lon-capa.org/  # http://www.lon-capa.org/
 #  #
 # (Internal Server Error Handler  
 #  
 # (Login Screen  
 # 5/21/99,5/22,5/25,5/26,5/31,6/2,6/10,7/12,7/14,  
 # 1/14/00,5/29,5/30,6/1,6/29,7/1,11/9 Gerd Kortemeyer)  
 #  
 # 3/1/1 Gerd Kortemeyer)  
 #  
 # 3/1 Gerd Kortemeyer  
 #  
 # 9/17 Alex Sakharuk  
 #  #
 package Apache::lonprintout;  package Apache::lonprintout;
   
Line 48  use Apache::inputtags; Line 37  use Apache::inputtags;
 use Apache::grades;  use Apache::grades;
 use Apache::edit;  use Apache::edit;
 use Apache::File();  use Apache::File();
   use Apache::lonnavmaps;
   use LONCAPA::map();
 use POSIX qw(strftime);  use POSIX qw(strftime);
   use Apache::lonlocal;
   use Carp;
   use LONCAPA;
   
   my %perm;
   my %parmhash;
   my $resources_printed;
   
   #
   #   printf_style_subst  item format_string repl
   #  
   # Does printf style substitution for a format string that
   # can have %[n]item in it.. wherever, %[n]item occurs,
   # rep is substituted in format_string.  Note that
   # [n] is an optional integer length.  If provided,
   # repl is truncated to at most [n] characters prior to 
   # substitution.
   #
   sub printf_style_subst {
       my ($item, $format_string, $repl) = @_;
       my $result = "";
       while ($format_string =~ /(%)(\d*)\Q$item\E/g ) {
    my $fmt = $1;
    my $size = $2;
    my $subst = $repl;
    if ($size ne "") {
       $subst = substr($subst, 0, $size);
       
       #  Here's a nice edge case.. supose the end of the
       #  substring is a \.  In that case may have  just
       #  chopped off a TeX escape... in that case, we append
       #   " " for the trailing character, and let the field 
       #  spill over a bit (sigh).
       #  We don't just chop off the last character in order to deal
       #  with one last pathology, and that would be if substr had
       #  trimmed us to e.g. \\\  
   
 sub headerform {  
     my $r = shift;      if ($subst =~ /\\$/) {
     $r->print(<<ENDHEADER);   $subst .= " ";
 <html>      }
 <head>   }
 <title>LON-CAPA output for printing</title>   my $item_pos = pos($format_string);
 </head>   $result .= substr($format_string, 0, $item_pos - length($size) -2) . $subst;
 <body bgcolor="FFFFFF">          $format_string = substr($format_string, pos($format_string));
 <form method="post" enctype="multipart/form-data" action="/adm/printout" name="printform">      }
 <tt>$ENV{'form.postdata'}</tt><p>  
 ENDHEADER      # Put the residual format string into the result:
   
       $result .= $format_string;
   
       return $result;
 }  }
   
   
 sub menu_for_output {  # Format a header according to a format.  
     my $r = shift;  # 
     my $symbolic = &Apache::lonnet::symbread($ENV{'form.postdata'});  
 #    $symbolic =~ m/([^_]+)_/;  # Substitutions:
 #    my $primary_sequence = '/res/'.$1;  #     %a    - Assignment name.
     $r->print(<<ENDMENUOUT1);  #     %c    - Course name.
 <h1>What do you want to print? Make a choice.</h1><br />  #     %n    - Student name.
 <input type="hidden" name="phase" value="two">  #
 <input type="hidden" name="url" value="$ENV{'form.postdata'}">  sub format_page_header {
 <input type="radio" name="choice" value="Standard LaTeX output for current document" checked>  Current document      my ($width, $format, $assignment, $course, $student) = @_;
 (you will print what you see on the screen)<br />      
 ENDMENUOUT1      $width = &recalcto_mm($width); # Get width in mm.
     if ((not $ENV{'request.role'}=~m/^au\./) and (not $ENV{'request.role'}=~m/^ca\./)) {      #  Default format?
  $r->print(<<ENDMENUOUT2);  
 <input type="radio" name="choice" value="Standard LaTeX output for the primary sequence">  All problems from the primary sequence<br />      if ($format eq '') {
 <input type="radio" name="choice" value="Standard LaTeX output for whole primary sequence">  The whole primary sequence (problems plus all html and xml files)<br />   # For the default format, we may need to truncate
 ENDMENUOUT2   # elements..  To do this we need to get the page width.
     }   # we assume that each character is about 2mm in width.
     if ($ENV{'request.role'}=~m/^cc\./ or $ENV{'request.role'}=~m/^in\./ or $ENV{'request.role'}=~m/^ta\./) {    # (correct for the header text size??).  We ignore
  $r->print(<<ENDMENUOUT6);   # any formatting (e.g. boldfacing in this).
 <input type="radio" name="choice" value="Standard LaTeX output for the top level sequence">  All problems from the top level sequence<br />   # 
 <br />   # - Allow the student/course to be one line.
 <input type="radio" name="choice" value="All class print">  Print assignment (all problems from the primary sequence) for group of students<br /><br />   #   but only truncate the course.
 ENDMENUOUT6   # - Allow the assignment to be 2 lines (wrapped).
    #
    my $chars_per_line = $width/2; # Character/textline.
   
   
    my $firstline = "$student $course";
    if (length($firstline) > $chars_per_line) {
       my $lastchar = $chars_per_line - length($student) - 1;
       if ($lastchar > 0) {
    $course = substr($course, 0, $lastchar);
       } else { # Nothing left of course:
    $course = '';
       }
    }
    if (length($assignment) > $chars_per_line) {
       $assignment = substr($assignment, 0, $chars_per_line);
    }
   
    $format =  "\\textbf{$student} $course \\hfill \\thepage \\\\ \\textit{$assignment}";
   
       } else {
    # An open question is how to handle long user formatted page headers...
    # A possible future is to support e.g. %na so that the user can control
    # the truncation of the elements that can appear in the header.
    #
    $format =  &printf_style_subst("a", $format, $assignment);
    $format =  &printf_style_subst("c", $format, $course);
    $format =  &printf_style_subst("n", $format, $student);
   
    # If the user put %'s in the format string, they  must be escaped
    # to \% else LaTeX will think they are comments and terminate
    # the line.. which is bad!!!
   
   
     }      }
       my $subdirtoprint = &Apache::lonnet::filelocation("",$ENV{'form.url'});      
       $subdirtoprint =~ s/\/[^\/]+$//;  
       if (&Apache::lonnet::allowed('bre',$subdirtoprint) eq 'F') {      return $format;
   $r->print(<<ENDMENUOUT4);      
   <input type="radio" name="choice" value="Subdirectory print">  All problems from current subdirectory (where this particular problem is)<br />  }
 ENDMENUOUT4  
       }  #
     $r->print(<<ENDMENUOUT5);  #   Convert a numeric code to letters
 <br /><hr /><br />  #
 <h1>And what page format do you prefer?</h1>  sub num_to_letters {
 <table>      my ($num) = @_;
  <tr>      my @nums= split('',$num);
    <td>      my @num_to_let=('A'..'Z');
      <input type="radio" name="layout" value="CBI"> Landscape <br />      my $word;
      <input type="radio" name="layout" value="CAPA" checked>  Portrait <br />      foreach my $digit (@nums) { $word.=$num_to_let[$digit]; }
    </td>      return $word;
    <td>&nbsp;</td>  }
    <td rawspan="2">  #   Convert a letter code to numeric.
      Number of columns: <select name="numberofcolumns">  #
                          <option> 1 </option>  sub letters_to_num {
                          <option selected> 2 </option>      my ($letters) = @_;
                         </select>       my @letters = split('', uc($letters));
    </td>     my %substitution;
    <td rawspan="2">      my $digit = 0;
      Paper size (format [width x height]): <select name="papersize">      foreach my $letter ('A'..'J') {
                                             <option selected> Letter [216x297 mm] </option>   $substitution{$letter} = $digit;
                                             <option> Legal [216x356 mm] </option>   $digit++;
                                             <option> Executive [190x254 mm] </option>      }
                                             <option> Ledger/Tabloid [279x432 mm] </option>      #  The substitution is done as below to preserve leading
                                             <option> A2 [420x594 mm] </option>      #  zeroes which are needed to keep the code size exact
                                             <option> A3 [297x420 mm] </option>      #
                                             <option> A4 [210x297 mm] </option>      my $result ="";
                                             <option> A5 [148x210 mm] </option>      foreach my $letter (@letters) {
                                             <option> A6 [105x148 mm] </option>   $result.=$substitution{$letter};
                                            </select>       }
    </td>      return $result;
  </tr>  
 </table>  
 </br>   
 <input type="submit" value="Submit your choice">  
 ENDMENUOUT5  
 }  }
   
   #  Determine if a code is a valid numeric code.  Valid
   #  numeric codes must be comprised entirely of digits and
   #  have a correct number of digits.
   #
   #  Parameters:
   #     value      - proposed code value.
   #     num_digits - Number of digits required.
   #
   sub is_valid_numeric_code {
       my ($value, $num_digits) = @_;
       #   Remove leading/trailing whitespace;
       $value =~ s/^\s*//g;
       $value =~ s/\s*$//g;
       
       #  All digits?
       if ($value !~ /^[0-9]+$/) {
    return "Numeric code $value has invalid characters - must only be digits";
       }
       if (length($value) != $num_digits) {
    return "Numeric code $value incorrect number of digits (correct = $num_digits)";
       }
       return undef;
   }
   #   Determines if a code is a valid alhpa code.  Alpha codes
   #   are ciphers that map  [A-J,a-j] -> 0..9 0..9.
   #   They also have a correct digit count.
   # Parameters:
   #     value          - Proposed code value.
   #     num_letters    - correct number of letters.
   # Note:
   #    leading and trailing whitespace are ignored.
   #
   sub is_valid_alpha_code {
       my ($value, $num_letters) = @_;
       
        # strip leading and trailing spaces.
   
       $value =~ s/^\s*//g;
       $value =~ s/\s*$//g;
   
       #  All alphas in the right range?
       if ($value !~ /^[A-J,a-j]+$/) {
    return "Invalid letter code $value must only contain A-J";
       }
       if (length($value) != $num_letters) {
    return "Letter code $value has incorrect number of letters (correct = $num_letters)";
       }
       return undef;
   }
   
 sub problem_choice_menu {  #   Determine if a code entered by the user in a helper is valid.
     my $r = shift;  #   valid depends on the code type and the type of code selected.
     my $subdirtoprint = &Apache::lonnet::filelocation("",$ENV{'form.url'});  #   The type of code selected can either be numeric or 
     $subdirtoprint =~ s/\/[^\/]+$//;  #   Alphabetic.  If alphabetic, the code, in fact is a simple
     my @list_of_files = ();  #   substitution cipher for the actual numeric code: 0->A, 1->B ...
     if ($ENV{'request.role'}=~m/^au\./ or $ENV{'request.role'}=~m/^ca\./) {  #   We'll be nice and be case insensitive for alpha codes.
  $subdirtoprint =~ s/^[^~]*~(\w+)\//\/home\/$1\/public_html\//;  # Parameters:
   #    code_value    - the value of the code the user typed in.
   #    code_option   - The code type selected from the set in the scantron format
   #                    table.
   # Returns:
   #    undef         - The code is valid.
   #    other         - An error message indicating what's wrong.
   #
   sub is_code_valid {
       my ($code_value, $code_option) = @_;
       my ($code_type, $code_length) = ('letter', 6); # defaults.
       open(FG, $Apache::lonnet::perlvar{'lonTabDir'}.'/scantronformat.tab');
       foreach my $line (<FG>) {
    my ($name, $type, $length) = (split(/:/, $line))[0,2,4];
    if($name eq $code_option) {
       $code_length = $length;
       if($type eq 'number') {
    $code_type = 'number';
       }
    }
       }
       my $valid;
       if ($code_type eq 'number') {
    return &is_valid_numeric_code($code_value, $code_length);
     } else {      } else {
  $subdirtoprint =~ s/.*(\/res\/)/$1/;   return &is_valid_alpha_code($code_value, $code_length);
       }
   
   }
   
   #   Compare two students by name.  The students are in the form
   #   returned by the helper:
   #      user:domain:section:last,   first:status
   #   This is a helper function for the perl sort built-in  therefore:
   # Implicit Inputs:
   #    $a     - The first element to compare (global)
   #    $b     - The second element to compare (global)
   # Returns:
   #   -1   - $a < $b
   #    0   - $a == $b
   #   +1   - $a > $b
   #   Note that the initial comparison is done on the last names with the
   #   first names only used to break the tie.
   #
   #
   sub compare_names {
       #  First split the names up into the primary fields.
   
       my ($u1, $d1, $s1, $n1, $stat1) = split(/:/, $a);
       my ($u2, $d2, $s2, $n2, $stat2) = split(/:/, $b);
   
       # Now split the last name and first name of each n:
       #
   
       my ($l1,$f1) = split(/,/, $n1);
       my ($l2,$f2) = split(/,/, $n2);
   
       # We don't bother to remove the leading/trailing whitespace from the
       # firstname, unless the last names compare identical.
   
       if($l1 lt $l2) {
    return -1;
       }
       if($l1 gt $l2) {
    return  1;
       }
   
       # Break the tie on the first name, but there are leading (possibly trailing
       # whitespaces to get rid of first 
       #
       $f1 =~ s/^\s+//; # Remove leading...
       $f1 =~ s/\s+$//; # Trailing spaces from first 1...
       
       $f2 =~ s/^\s+//;
       $f2 =~ s/\s+$//; # And the same for first 2...
   
       if($f1 lt $f2) {
    return -1;
       }
       if($f1 gt $f2) {
    return 1;
       }
       
       #  Must be the same name.
   
       return 0;
   }
   
   sub latex_header_footer_remove {
       my $text = shift;
       $text =~ s/\\end{document}//;
       $text =~ s/\\documentclass([^&]*)\\begin{document}//;
       return $text;
   }
   #
   #  If necessary, encapsulate text inside 
   #  a minipage env.
   #  necessity is determined by the problem_split param.
   #
   sub encapsulate_minipage {
       my ($text) = @_;
       if (!($env{'form.problem.split'} =~ /yes/i)) {
    $text = '\begin{minipage}{\textwidth}'.$text.'\end{minipage}';
     }      }
     my @content_directory = ();      return $text;
     if ($ENV{'request.role'}=~m/^au\./ or $ENV{'request.role'}=~m/^ca\./) {  }
  @content_directory = &Apache::lonnet::dirlist($subdirtoprint,$ENV{'user.domain'}, $ENV{'user.name'},'');  #
   #  The NUMBER_TO_PRINT and SPLIT_PDFS
   #  variables interact, this sub looks at these two parameters
   #  and comes up with a final value for NUMBER_TO_PRINT which can be:
   #     all     - if SPLIT_PDFS eq 'all'.
   #     1       - if SPLIT_PDFS eq 'oneper'
   #     section - if SPLIT_PDFS eq 'sections'
   #     <unchanged> - if SPLIT_PDFS eq 'usenumber'
   #
   sub adjust_number_to_print {
       my $helper = shift;
   
       my $split_pdf = $helper->{'VARS'}->{'SPLIT_PDFS'};
       
       if ($split_pdf eq 'all') {
    $helper->{'VARS'}->{'NUMBER_TO_PRINT'} = 'all';
       } elsif ($split_pdf eq 'oneper') {
    $helper->{'VARS'}->{'NUMBER_TO_PRINT'} = 1;
       } elsif ($split_pdf eq 'sections') {
    $helper->{'VARS'}->{'NUMBER_TO_PRINT'} = 'section';
       } elsif ($split_pdf eq 'usenumber') {
    #  Unmodified.
     } else {      } else {
  @content_directory = &Apache::lonnet::dirlist($subdirtoprint);   # Error!!!!
   
    croak "bad SPLIT_PDFS: $split_pdf in lonprintout::adjust_number_to_print";
     }      }
     for (my $iy=0;$iy<=$#content_directory;$iy++) {  }
  my @tempo_array = split(/&/,$content_directory[$iy]);  
  if ($tempo_array[0] =~ m/^[^\.]+\.(problem|exam|quiz|assess|survey|form|library)$/) {  sub character_chart {
     push(@list_of_files,$tempo_array[0]);      my $result = shift;
  }      $result =~ s/&\#0?0?(7|9);//g;
     }      $result =~ s/&\#0?(10|13);//g;
     $subdirtoprint =~ s/\/$//;      $result =~ s/&\#0?32;/ /g;
     for (my $i=0;$i<=$#list_of_files;$i++) {      $result =~ s/&\#0?33;/!/g;
  $list_of_files[$i] = $subdirtoprint.'/'.$list_of_files[$i];      $result =~ s/&(\#0?34|quot);/\"/g;
     }      $result =~ s/&\#0?35;/\\\#/g;
     $r->print(<<ENDMENUOUT1);      $result =~ s/&\#0?36;/\\\$/g;
 <input type="hidden" name="url" value="$ENV{'form.url'}">      $result =~ s/&\#0?37;/\\%/g; 
 <input type="hidden" name="choice" value="$ENV{'form.choice'}">      $result =~ s/&(\#0?38|amp);/\\&/g; 
 <input type="hidden" name="layout" value="$ENV{'form.layout'}">      $result =~ s/&\#(0?39|146);/\'/g;
 <input type="hidden" name="numberofcolumns" value="$ENV{'form.numberofcolumns'}">      $result =~ s/&\#0?40;/(/g;
 <h1>Mark problems which you want to print</h1>      $result =~ s/&\#0?41;/)/g;
 <script>      $result =~ s/&\#0?42;/\*/g;
     function checkall() {      $result =~ s/&\#0?43;/\+/g;
  for (i=0; i<document.forms.printform.elements.length; i++) {      $result =~ s/&\#(0?44|130);/,/g;
             if       $result =~ s/&\#0?45;/-/g;
           (document.forms.printform.elements[i].name.indexOf('whattoprint')==0) {      $result =~ s/&\#0?46;/\./g;
       document.forms.printform.elements[i].checked=true;      $result =~ s/&\#0?47;/\//g;
             }      $result =~ s/&\#0?48;/0/g;
         }      $result =~ s/&\#0?49;/1/g;
       $result =~ s/&\#0?50;/2/g;
       $result =~ s/&\#0?51;/3/g;
       $result =~ s/&\#0?52;/4/g;
       $result =~ s/&\#0?53;/5/g;
       $result =~ s/&\#0?54;/6/g;
       $result =~ s/&\#0?55;/7/g;
       $result =~ s/&\#0?56;/8/g;
       $result =~ s/&\#0?57;/9/g;
       $result =~ s/&\#0?58;/:/g;
       $result =~ s/&\#0?59;/;/g;
       $result =~ s/&(\#0?60|lt|\#139);/\$<\$/g;
       $result =~ s/&\#0?61;/\\ensuremath\{=\}/g;
       $result =~ s/&(\#0?62|gt|\#155);/\\ensuremath\{>\}/g;
       $result =~ s/&\#0?63;/\?/g;
       $result =~ s/&\#0?65;/A/g;
       $result =~ s/&\#0?66;/B/g;
       $result =~ s/&\#0?67;/C/g;
       $result =~ s/&\#0?68;/D/g;
       $result =~ s/&\#0?69;/E/g;
       $result =~ s/&\#0?70;/F/g;
       $result =~ s/&\#0?71;/G/g;
       $result =~ s/&\#0?72;/H/g;
       $result =~ s/&\#0?73;/I/g;
       $result =~ s/&\#0?74;/J/g;
       $result =~ s/&\#0?75;/K/g;
       $result =~ s/&\#0?76;/L/g;
       $result =~ s/&\#0?77;/M/g;
       $result =~ s/&\#0?78;/N/g;
       $result =~ s/&\#0?79;/O/g;
       $result =~ s/&\#0?80;/P/g;
       $result =~ s/&\#0?81;/Q/g;
       $result =~ s/&\#0?82;/R/g;
       $result =~ s/&\#0?83;/S/g;
       $result =~ s/&\#0?84;/T/g;
       $result =~ s/&\#0?85;/U/g;
       $result =~ s/&\#0?86;/V/g;
       $result =~ s/&\#0?87;/W/g;
       $result =~ s/&\#0?88;/X/g;
       $result =~ s/&\#0?89;/Y/g;
       $result =~ s/&\#0?90;/Z/g;
       $result =~ s/&\#0?91;/[/g;
       $result =~ s/&\#0?92;/\\ensuremath\{\\setminus\}/g;
       $result =~ s/&\#0?93;/]/g;
       $result =~ s/&\#(0?94|136);/\\ensuremath\{\\wedge\}/g;
       $result =~ s/&\#(0?95|138|154);/\\underline{\\makebox[2mm]{\\strut}}/g;
       $result =~ s/&\#(0?96|145);/\`/g;
       $result =~ s/&\#0?97;/a/g;
       $result =~ s/&\#0?98;/b/g;
       $result =~ s/&\#0?99;/c/g;
       $result =~ s/&\#100;/d/g;
       $result =~ s/&\#101;/e/g;
       $result =~ s/&\#102;/f/g;
       $result =~ s/&\#103;/g/g;
       $result =~ s/&\#104;/h/g;
       $result =~ s/&\#105;/i/g;
       $result =~ s/&\#106;/j/g;
       $result =~ s/&\#107;/k/g;
       $result =~ s/&\#108;/l/g;
       $result =~ s/&\#109;/m/g;
       $result =~ s/&\#110;/n/g;
       $result =~ s/&\#111;/o/g;
       $result =~ s/&\#112;/p/g;
       $result =~ s/&\#113;/q/g;
       $result =~ s/&\#114;/r/g;
       $result =~ s/&\#115;/s/g;
       $result =~ s/&\#116;/t/g;
       $result =~ s/&\#117;/u/g;
       $result =~ s/&\#118;/v/g;
       $result =~ s/&\#119;/w/g;
       $result =~ s/&\#120;/x/g;
       $result =~ s/&\#121;/y/g;
       $result =~ s/&\#122;/z/g;
       $result =~ s/&\#123;/\\{/g;
       $result =~ s/&\#124;/\|/g;
       $result =~ s/&\#125;/\\}/g;
       $result =~ s/&\#126;/\~/g;
       $result =~ s/&\#131;/\\textflorin /g;
       $result =~ s/&\#132;/\"/g;
       $result =~ s/&\#133;/\\ensuremath\{\\ldots\}/g;
       $result =~ s/&\#134;/\\ensuremath\{\\dagger\}/g;
       $result =~ s/&\#135;/\\ensuremath\{\\ddagger\}/g;
       $result =~ s/&\#137;/\\textperthousand /g;
       $result =~ s/&\#140;/{\\OE}/g;
       $result =~ s/&\#147;/\`\`/g;
       $result =~ s/&\#148;/\'\'/g;
       $result =~ s/&\#149;/\\ensuremath\{\\bullet\}/g;
       $result =~ s/&(\#150|\#8211);/--/g;
       $result =~ s/&\#151;/---/g;
       $result =~ s/&\#152;/\\ensuremath\{\\sim\}/g;
       $result =~ s/&\#153;/\\texttrademark /g;
       $result =~ s/&\#156;/\\oe/g;
       $result =~ s/&\#159;/\\\"Y/g;
       $result =~ s/&(\#160|nbsp);/~/g;
       $result =~ s/&(\#161|iexcl);/!\`/g;
       $result =~ s/&(\#162|cent);/\\textcent /g;
       $result =~ s/&(\#163|pound);/\\pounds /g; 
       $result =~ s/&(\#164|curren);/\\textcurrency /g;
       $result =~ s/&(\#165|yen);/\\textyen /g;
       $result =~ s/&(\#166|brvbar);/\\textbrokenbar /g;
       $result =~ s/&(\#167|sect);/\\textsection /g;
       $result =~ s/&(\#168|uml);/\\texthighdieresis /g;
       $result =~ s/&(\#169|copy);/\\copyright /g;
       $result =~ s/&(\#170|ordf);/\\textordfeminine /g;
       $result =~ s/&(\#172|not);/\\ensuremath\{\\neg\}/g;
       $result =~ s/&(\#173|shy);/ - /g;
       $result =~ s/&(\#174|reg);/\\textregistered /g;
       $result =~ s/&(\#175|macr);/\\ensuremath\{^{-}\}/g;
       $result =~ s/&(\#176|deg);/\\ensuremath\{^{\\circ}\}/g;
       $result =~ s/&(\#177|plusmn);/\\ensuremath\{\\pm\}/g;
       $result =~ s/&(\#178|sup2);/\\ensuremath\{^2\}/g;
       $result =~ s/&(\#179|sup3);/\\ensuremath\{^3\}/g;
       $result =~ s/&(\#180|acute);/\\textacute /g;
       $result =~ s/&(\#181|micro);/\\ensuremath\{\\mu\}/g;
       $result =~ s/&(\#182|para);/\\P/g;
       $result =~ s/&(\#183|middot);/\\ensuremath\{\\cdot\}/g;
       $result =~ s/&(\#184|cedil);/\\c{\\strut}/g;
       $result =~ s/&(\#185|sup1);/\\ensuremath\{^1\}/g;
       $result =~ s/&(\#186|ordm);/\\textordmasculine /g;
       $result =~ s/&(\#188|frac14);/\\textonequarter /g;
       $result =~ s/&(\#189|frac12);/\\textonehalf /g;
       $result =~ s/&(\#190|frac34);/\\textthreequarters /g;
       $result =~ s/&(\#191|iquest);/?\`/g;   
       $result =~ s/&(\#192|Agrave);/\\\`{A}/g;  
       $result =~ s/&(\#193|Aacute);/\\\'{A}/g; 
       $result =~ s/&(\#194|Acirc);/\\^{A}/g;
       $result =~ s/&(\#195|Atilde);/\\~{A}/g;
       $result =~ s/&(\#196|Auml);/\\\"{A}/g; 
       $result =~ s/&(\#197|Aring);/{\\AA}/g;
       $result =~ s/&(\#198|AElig);/{\\AE}/g;
       $result =~ s/&(\#199|Ccedil);/\\c{c}/g;
       $result =~ s/&(\#200|Egrave);/\\\`{E}/g;  
       $result =~ s/&(\#201|Eacute);/\\\'{E}/g;    
       $result =~ s/&(\#202|Ecirc);/\\^{E}/g;
       $result =~ s/&(\#203|Euml);/\\\"{E}/g;
       $result =~ s/&(\#204|Igrave);/\\\`{I}/g;
       $result =~ s/&(\#205|Iacute);/\\\'{I}/g;    
       $result =~ s/&(\#206|Icirc);/\\^{I}/g;
       $result =~ s/&(\#207|Iuml);/\\\"{I}/g;    
       $result =~ s/&(\#209|Ntilde);/\\~{N}/g;
       $result =~ s/&(\#210|Ograve);/\\\`{O}/g;
       $result =~ s/&(\#211|Oacute);/\\\'{O}/g;
       $result =~ s/&(\#212|Ocirc);/\\^{O}/g;
       $result =~ s/&(\#213|Otilde);/\\~{O}/g;
       $result =~ s/&(\#214|Ouml);/\\\"{O}/g;    
       $result =~ s/&(\#215|times);/\\ensuremath\{\\times\}/g;
       $result =~ s/&(\#216|Oslash);/{\\O}/g;
       $result =~ s/&(\#217|Ugrave);/\\\`{U}/g;    
       $result =~ s/&(\#218|Uacute);/\\\'{U}/g;
       $result =~ s/&(\#219|Ucirc);/\\^{U}/g;
       $result =~ s/&(\#220|Uuml);/\\\"{U}/g;
       $result =~ s/&(\#221|Yacute);/\\\'{Y}/g;
       $result =~ s/&(\#223|szlig);/{\\ss}/g;
       $result =~ s/&(\#224|agrave);/\\\`{a}/g;
       $result =~ s/&(\#225|aacute);/\\\'{a}/g;
       $result =~ s/&(\#226|acirc);/\\^{a}/g;
       $result =~ s/&(\#227|atilde);/\\~{a}/g;
       $result =~ s/&(\#228|auml);/\\\"{a}/g;
       $result =~ s/&(\#229|aring);/{\\aa}/g;
       $result =~ s/&(\#230|aelig);/{\\ae}/g;
       $result =~ s/&(\#231|ccedil);/\\c{c}/g;
       $result =~ s/&(\#232|egrave);/\\\`{e}/g;
       $result =~ s/&(\#233|eacute);/\\\'{e}/g;
       $result =~ s/&(\#234|ecirc);/\\^{e}/g;
       $result =~ s/&(\#235|euml);/\\\"{e}/g;
       $result =~ s/&(\#236|igrave);/\\\`{i}/g;
       $result =~ s/&(\#237|iacute);/\\\'{i}/g;
       $result =~ s/&(\#238|icirc);/\\^{i}/g;
       $result =~ s/&(\#239|iuml);/\\\"{i}/g;
       $result =~ s/&(\#240|eth);/\\ensuremath\{\\partial\}/g;
       $result =~ s/&(\#241|ntilde);/\\~{n}/g;
       $result =~ s/&(\#242|ograve);/\\\`{o}/g;
       $result =~ s/&(\#243|oacute);/\\\'{o}/g;
       $result =~ s/&(\#244|ocirc);/\\^{o}/g;
       $result =~ s/&(\#245|otilde);/\\~{o}/g;
       $result =~ s/&(\#246|ouml);/\\\"{o}/g;
       $result =~ s/&(\#247|divide);/\\ensuremath\{\\div\}/g;
       $result =~ s/&(\#248|oslash);/{\\o}/g;
       $result =~ s/&(\#249|ugrave);/\\\`{u}/g; 
       $result =~ s/&(\#250|uacute);/\\\'{u}/g;
       $result =~ s/&(\#251|ucirc);/\\^{u}/g;
       $result =~ s/&(\#252|uuml);/\\\"{u}/g;
       $result =~ s/&(\#253|yacute);/\\\'{y}/g;
       $result =~ s/&(\#255|yuml);/\\\"{y}/g;
       $result =~ s/&\#295;/\\ensuremath\{\\hbar\}/g;
       $result =~ s/&\#952;/\\ensuremath\{\\theta\}/g;
   #Greek Alphabet
       $result =~ s/&(alpha|\#945);/\\ensuremath\{\\alpha\}/g;
       $result =~ s/&(beta|\#946);/\\ensuremath\{\\beta\}/g;
       $result =~ s/&(gamma|\#947);/\\ensuremath\{\\gamma\}/g;
       $result =~ s/&(delta|\#948);/\\ensuremath\{\\delta\}/g;
       $result =~ s/&(epsilon|\#949);/\\ensuremath\{\\epsilon\}/g;
       $result =~ s/&(zeta|\#950);/\\ensuremath\{\\zeta\}/g;
       $result =~ s/&(eta|\#951);/\\ensuremath\{\\eta\}/g;
       $result =~ s/&(theta|\#952);/\\ensuremath\{\\theta\}/g;
       $result =~ s/&(iota|\#953);/\\ensuremath\{\\iota\}/g;
       $result =~ s/&(kappa|\#954);/\\ensuremath\{\\kappa\}/g;
       $result =~ s/&(lambda|\#955);/\\ensuremath\{\\lambda\}/g;
       $result =~ s/&(mu|\#956);/\\ensuremath\{\\mu\}/g;
       $result =~ s/&(nu|\#957);/\\ensuremath\{\\nu\}/g;
       $result =~ s/&(xi|\#958);/\\ensuremath\{\\xi\}/g;
       $result =~ s/&(omicron|\#959);/o/g;
       $result =~ s/&(pi|\#960);/\\ensuremath\{\\pi\}/g;
       $result =~ s/&(rho|\#961);/\\ensuremath\{\\rho\}/g;
       $result =~ s/&(sigma|\#963);/\\ensuremath\{\\sigma\}/g;
       $result =~ s/&(tau|\#964);/\\ensuremath\{\\tau\}/g;
       $result =~ s/&(upsilon|\#965);/\\ensuremath\{\\upsilon\}/g;
       $result =~ s/&(phi|\#966);/\\ensuremath\{\\phi\}/g;
       $result =~ s/&(chi|\#967);/\\ensuremath\{\\chi\}/g;
       $result =~ s/&(psi|\#968);/\\ensuremath\{\\psi\}/g;
       $result =~ s/&(omega|\#969);/\\ensuremath\{\\omega\}/g;
       $result =~ s/&(thetasym|\#977);/\\ensuremath\{\\vartheta\}/g;
       $result =~ s/&(piv|\#982);/\\ensuremath\{\\varpi\}/g;
       $result =~ s/&(Alpha|\#913);/A/g;
       $result =~ s/&(Beta|\#914);/B/g;
       $result =~ s/&(Gamma|\#915);/\\ensuremath\{\\Gamma\}/g;
       $result =~ s/&(Delta|\#916);/\\ensuremath\{\\Delta\}/g;
       $result =~ s/&(Epsilon|\#917);/E/g;
       $result =~ s/&(Zeta|\#918);/Z/g;
       $result =~ s/&(Eta|\#919);/H/g;
       $result =~ s/&(Theta|\#920);/\\ensuremath\{\\Theta\}/g;
       $result =~ s/&(Iota|\#921);/I/g;
       $result =~ s/&(Kappa|\#922);/K/g;
       $result =~ s/&(Lambda|\#923);/\\ensuremath\{\\Lambda\}/g;
       $result =~ s/&(Mu|\#924);/M/g;
       $result =~ s/&(Nu|\#925);/N/g;
       $result =~ s/&(Xi|\#926);/\\ensuremath\{\\Xi\}/g;
       $result =~ s/&(Omicron|\#927);/O/g;
       $result =~ s/&(Pi|\#928);/\\ensuremath\{\\Pi\}/g;
       $result =~ s/&(Rho|\#929);/P/g;
       $result =~ s/&(Sigma|\#931);/\\ensuremath\{\\Sigma\}/g;
       $result =~ s/&(Tau|\#932);/T/g;
       $result =~ s/&(Upsilon|\#933);/\\ensuremath\{\\Upsilon\}/g;
       $result =~ s/&(Phi|\#934);/\\ensuremath\{\\Phi\}/g;
       $result =~ s/&(Chi|\#935);/X/g;
       $result =~ s/&(Psi|\#936);/\\ensuremath\{\\Psi\}/g;
       $result =~ s/&(Omega|\#937);/\\ensuremath\{\\Omega\}/g;
   #Arrows (extended HTML 4.01)
       $result =~ s/&(larr|\#8592);/\\ensuremath\{\\leftarrow\}/g;
       $result =~ s/&(uarr|\#8593);/\\ensuremath\{\\uparrow\}/g;
       $result =~ s/&(rarr|\#8594);/\\ensuremath\{\\rightarrow\}/g;
       $result =~ s/&(darr|\#8595);/\\ensuremath\{\\downarrow\}/g;
       $result =~ s/&(harr|\#8596);/\\ensuremath\{\\leftrightarrow\}/g;
       $result =~ s/&(lArr|\#8656);/\\ensuremath\{\\Leftarrow\}/g;
       $result =~ s/&(uArr|\#8657);/\\ensuremath\{\\Uparrow\}/g;
       $result =~ s/&(rArr|\#8658);/\\ensuremath\{\\Rightarrow\}/g;
       $result =~ s/&(dArr|\#8659);/\\ensuremath\{\\Downarrow\}/g;
       $result =~ s/&(hArr|\#8660);/\\ensuremath\{\\Leftrightarrow\}/g;
   #Mathematical Operators (extended HTML 4.01)
       $result =~ s/&(forall|\#8704);/\\ensuremath\{\\forall\}/g;
       $result =~ s/&(part|\#8706);/\\ensuremath\{\\partial\}/g;
       $result =~ s/&(exist|\#8707);/\\ensuremath\{\\exists\}/g;
       $result =~ s/&(empty|\#8709);/\\ensuremath\{\\emptyset\}/g;
       $result =~ s/&(nabla|\#8711);/\\ensuremath\{\\nabla\}/g;
       $result =~ s/&(isin|\#8712);/\\ensuremath\{\\in\}/g;
       $result =~ s/&(notin|\#8713);/\\ensuremath\{\\notin\}/g;
       $result =~ s/&(ni|\#8715);/\\ensuremath\{\\ni\}/g;
       $result =~ s/&(prod|\#8719);/\\ensuremath\{\\prod\}/g;
       $result =~ s/&(sum|\#8721);/\\ensuremath\{\\sum\}/g;
       $result =~ s/&(minus|\#8722);/\\ensuremath\{-\}/g;
       $result =~ s/–/\\ensuremath\{-\}/g;
       $result =~ s/&(lowast|\#8727);/\\ensuremath\{*\}/g;
       $result =~ s/&(radic|\#8730);/\\ensuremath\{\\surd\}/g;
       $result =~ s/&(prop|\#8733);/\\ensuremath\{\\propto\}/g;
       $result =~ s/&(infin|\#8734);/\\ensuremath\{\\infty\}/g;
       $result =~ s/&(ang|\#8736);/\\ensuremath\{\\angle\}/g;
       $result =~ s/&(and|\#8743);/\\ensuremath\{\\wedge\}/g;
       $result =~ s/&(or|\#8744);/\\ensuremath\{\\vee\}/g;
       $result =~ s/&(cap|\#8745);/\\ensuremath\{\\cap\}/g;
       $result =~ s/&(cup|\#8746);/\\ensuremath\{\\cup\}/g;
       $result =~ s/&(int|\#8747);/\\ensuremath\{\\int\}/g;
       $result =~ s/&(sim|\#8764);/\\ensuremath\{\\sim\}/g;
       $result =~ s/&(cong|\#8773);/\\ensuremath\{\\cong\}/g;
       $result =~ s/&(asymp|\#8776);/\\ensuremath\{\\approx\}/g;
       $result =~ s/&(ne|\#8800);/\\ensuremath\{\\not=\}/g;
       $result =~ s/&(equiv|\#8801);/\\ensuremath\{\\equiv\}/g;
       $result =~ s/&(le|\#8804);/\\ensuremath\{\\leq\}/g;
       $result =~ s/&(ge|\#8805);/\\ensuremath\{\\geq\}/g;
       $result =~ s/&(sub|\#8834);/\\ensuremath\{\\subset\}/g;
       $result =~ s/&(sup|\#8835);/\\ensuremath\{\\supset\}/g;
       $result =~ s/&(nsub|\#8836);/\\ensuremath\{\\not\\subset\}/g;
       $result =~ s/&(sube|\#8838);/\\ensuremath\{\\subseteq\}/g;
       $result =~ s/&(supe|\#8839);/\\ensuremath\{\\supseteq\}/g;
       $result =~ s/&(oplus|\#8853);/\\ensuremath\{\\oplus\}/g;
       $result =~ s/&(otimes|\#8855);/\\ensuremath\{\\otimes\}/g;
       $result =~ s/&(perp|\#8869);/\\ensuremath\{\\perp\}/g;
       $result =~ s/&(sdot|\#8901);/\\ensuremath\{\\cdot\}/g;
   #Geometric Shapes (extended HTML 4.01)
       $result =~ s/&(loz|\#9674);/\\ensuremath\{\\Diamond\}/g;
   #Miscellaneous Symbols (extended HTML 4.01)
       $result =~ s/&(spades|\#9824);/\\ensuremath\{\\spadesuit\}/g;
       $result =~ s/&(clubs|\#9827);/\\ensuremath\{\\clubsuit\}/g;
       $result =~ s/&(hearts|\#9829);/\\ensuremath\{\\heartsuit\}/g;
       $result =~ s/&(diams|\#9830);/\\ensuremath\{\\diamondsuit\}/g;
   #   Chemically useful 'things' contributed by Hon Kie (bug 4652).
       $result =~ s/&\#8636;/\\ensuremath\{\\leftharpoonup\}/g;
       $result =~ s/&\#8637;/\\ensuremath\{\\leftharpoondown\}/g;
       $result =~ s/&\#8640;/\\ensuremath\{\\rightharpoonup\}/g;
       $result =~ s/&\#8641;/\\ensuremath\{\\rightharpoondown\}/g;
       $result =~ s/&\#8652;/\\ensuremath\{\\rightleftharpoons\}/g;
       $result =~ s/&\#8605;/\\ensuremath\{\\leadsto\}/g;
       $result =~ s/&\#8617;/\\ensuremath\{\\hookleftarrow\}/g;
       $result =~ s/&\#8618;/\\ensuremath\{\\hookrightarrow\}/g;
       $result =~ s/&\#8614;/\\ensuremath\{\\mapsto\}/g;
       $result =~ s/&\#8599;/\\ensuremath\{\\nearrow\}/g;
       $result =~ s/&\#8600;/\\ensuremath\{\\searrow\}/g;
       $result =~ s/&\#8601;/\\ensuremath\{\\swarrow\}/g;
       $result =~ s/&\#8598;/\\ensuremath\{\\nwarrow\}/g;
       return $result;
   }
   
   
                     #width, height, oddsidemargin, evensidemargin, topmargin
   my %page_formats=
       ('letter' => {
    'book' => {
        '1' => [ '7.1 in','9.8 in', '-0.57 in','-0.57 in','0.275 in'],
        '2' => ['3.66 in','9.8 in', '-0.57 in','-0.57 in','0.275 in']
    },
    'album' => {
        '1' => [ '8.8 in', '6.8 in','-0.55 in',  '-0.55 in','1.0 in'],
        '2' => [ '4.8 in', '6.8 in','-0.5 in', '-1.0 in','3.5 in']
    },
        },
        'legal' => {
    'book' => {
        '1' => ['7.1 in','13 in',,'-0.57 in','-0.57 in','-0.5 in'],
        '2' => ['3.16 in','13 in','-0.57 in','-0.57 in','-0.5 in']
    },
    'album' => {
        '1' => ['12 in','7.1 in',,'-0.57 in','-0.57 in','-0.5 in'],
                '2' => ['6.0 in','7.1 in','-1 in','-1 in','5 in']
             },
        },
        'tabloid' => {
    'book' => {
        '1' => ['9.8 in','16 in','-0.57 in','-0.57 in','-0.5 in'],
        '2' => ['4.9 in','16 in','-0.57 in','-0.57 in','-0.5 in']
    },
    'album' => {
        '1' => ['16 in','9.8 in','-0.57 in','-0.57 in','-0.5 in'],
        '2' => ['16 in','4.9 in','-0.57 in','-0.57 in','-0.5 in']
             },
        },
        'executive' => {
    'book' => {
        '1' => ['6.8 in','9 in','-0.57 in','-0.57 in','1.2 in'],
        '2' => ['3.1 in','9 in','-0.57 in','-0.57 in','1.2 in']
    },
    'album' => {
        '1' => [],
        '2' => []
             },
        },
        'a2' => {
    'book' => {
        '1' => [],
        '2' => []
    },
    'album' => {
        '1' => [],
        '2' => []
             },
        },
        'a3' => {
    'book' => {
        '1' => [],
        '2' => []
    },
    'album' => {
        '1' => [],
        '2' => []
             },
        },
        'a4' => {
    'book' => {
        '1' => ['17.6 cm','27.2 cm','-1.397 cm','-2.11 cm','-1.27 cm'],
        '2' => [ '9.1 cm','27.2 cm','-1.397 c,','-2.11 cm','-1.27 cm']
    },
    'album' => {
        '1' => ['21.59 cm','19.558 cm','-1.27 cm','-2.11 cm','0 cm'],
        '2' => ['9.91 cm','19.558 cm','-1.397 cm','-2.11 cm','0 cm']
    },
        },
        'a5' => {
    'book' => {
        '1' => [],
        '2' => []
    },
    'album' => {
        '1' => [],
        '2' => []
             },
        },
        'a6' => {
    'book' => {
        '1' => [],
        '2' => []
    },
    'album' => {
        '1' => [],
        '2' => []
             },
        },
        );
   
   sub page_format {
   #
   #Supported paper format: "Letter [8 1/2x11 in]",      "Legal [8 1/2x14 in]",
   #                        "Ledger/Tabloid [11x17 in]", "Executive [7 1/2x10 in]",
   #                        "A2 [420x594 mm]",           "A3 [297x420 mm]",
   #                        "A4 [210x297 mm]",           "A5 [148x210 mm]",
   #                        "A6 [105x148 mm]"
   # 
       my ($papersize,$layout,$numberofcolumns) = @_; 
       return @{$page_formats{$papersize}->{$layout}->{$numberofcolumns}};
   }
   
   
   sub get_name {
       my ($uname,$udom)=@_;
       if (!defined($uname)) { $uname=$env{'user.name'}; }
       if (!defined($udom)) { $udom=$env{'user.domain'}; }
       my $plainname=&Apache::loncommon::plainname($uname,$udom);
       if ($plainname=~/^\s*$/) { $plainname=$uname.'@'.$udom; }
      $plainname=&Apache::lonxml::latex_special_symbols($plainname,'header');
       return $plainname;
   }
   
   sub get_course {
       my $courseidinfo;
       if (defined($env{'request.course.id'})) {
    $courseidinfo = &Apache::lonxml::latex_special_symbols(&unescape($env{'course.'.$env{'request.course.id'}.'.description'}),'header');
     }      }
       return $courseidinfo;
   }
   
   sub page_format_transformation {
       my ($papersize,$layout,$numberofcolumns,$choice,$text,$assignment,$tableofcontents,$indexlist,$selectionmade) = @_; 
       my ($textwidth,$textheight,$oddoffset,$evenoffset,$topmargin);
   
     function uncheckall() {      if ($selectionmade eq '4') {
  for (i=0; i<document.forms.printform.elements.length; i++) {   $assignment='Problems from the Whole Course';
             if       } else {
           (document.forms.printform.elements[i].name.indexOf('whattoprint')==0) {   $assignment=&Apache::lonxml::latex_special_symbols($assignment,'header');
       document.forms.printform.elements[i].checked=false;  
             }  
         }  
     }      }
 </script>      ($textwidth,$textheight,$oddoffset,$evenoffset,$topmargin) = &page_format($papersize,$layout,$numberofcolumns,$topmargin);
 <input type=button onClick="checkall()" value="Check for All">&nbsp;  
 <input type=button onClick="uncheckall()" value="Check for None">  
 <p>      my $name = &get_name();
 ENDMENUOUT1      my $courseidinfo = &get_course();
     my $i;      if (defined($courseidinfo)) { $courseidinfo=' - '.$courseidinfo }
     foreach my $file (@list_of_files) {      my $header_text  = $parmhash{'print_header_format'};
  $r->print('<br /><input type=checkbox name="whattoprint'.$i.'" value="'.$file.'"> '.      $header_text     = &format_page_header($textwidth, $header_text, $assignment,
                   $file);     $courseidinfo, $name);
  $i++;      my $topmargintoinsert = '';
       if ($topmargin ne '0') {$topmargintoinsert='\setlength{\topmargin}{'.$topmargin.'}';}
       my $fancypagestatement='';
       if ($numberofcolumns eq '2') {
    $fancypagestatement="\\fancyhead{}\\fancyhead[LO]{$header_text}";
       } else {
    $fancypagestatement="\\rhead{}\\chead{}\\lhead{$header_text}";
     }      }
     $r->print(<<ENDMENUOUT2);      if ($layout eq 'album') {
 <br />      $text =~ s/\\begin{document}/\\setlength{\\oddsidemargin}{$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}$fancypagestatement\\begin{document}\\voffset=-0\.8 cm\\setcounter{page}{1}\n /;
 <input type="hidden" name="numberofproblems" value="$i">      } elsif ($layout eq 'book') {
 <input type="hidden" name="phase" value="three">   if ($choice ne 'All class print') { 
 <input type="submit" value="Submit">      $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\\begin{document}\n\\voffset=-0\.8 cm\\setcounter{page}{1}\n/;
 ENDMENUOUT2   } else {
       $text =~ s/\\pagestyle{fancy}\\rhead{}\\chead{}\s*\\begin{document}/\\textheight = $textheight\\oddsidemargin = $evenoffset\n\\evensidemargin = $evenoffset $topmargintoinsert\\textwidth= $textwidth\\newlength{\\minipagewidth}\n\\setlength{\\minipagewidth}{\\textwidth\/\$number_of_columns-0\.2cm}\\renewcommand{\\ref}{\\keephidden\}\\pagestyle{fancy}\\rhead{}\\chead{}\\begin{document}\\voffset=-0\.8cm\n\\setcounter{page}{1}  \\vskip 5 mm\n /;
    }
    if ($papersize eq 'a4') {
       $text =~ s/(\\begin{document})/$1\\special{papersize=210mm,297mm}/;
    }
       }
       if ($tableofcontents eq 'yes') {$text=~s/(\\setcounter\{page\}\{1\})/$1 \\tableofcontents\\newpage /;}
       if ($indexlist eq 'yes') {
    $text=~s/(\\begin{document})/\\makeindex $1/;
    $text=~s/(\\end{document})/\\strut\\\\\\strut\\printindex $1/;
       }
       return $text;
 }  }
   
   
 sub additional_class_menu {  sub page_cleanup {
     my $r = shift;      my $result = shift;
     $r->print(<<ENDMENUOUT1);   
 <input type="hidden" name="url" value="$ENV{'form.url'}">      $result =~ m/\\end{document}(\d*)$/;
 <input type="hidden" name="choice" value="$ENV{'form.choice'}">      my $number_of_columns = $1;
 <input type="hidden" name="layout" value="$ENV{'form.layout'}">      my $insert = '{';
 <input type="hidden" name="numberofcolumns" value="$ENV{'form.numberofcolumns'}">      for (my $id=1;$id<=$number_of_columns;$id++) { $insert .='l'; }
 <h1>Mark students which assignments you want to print</h1>      $insert .= '}';
 ENDMENUOUT1      $result =~ s/(\\begin{longtable})INSERTTHEHEADOFLONGTABLE\\endfirsthead\\endhead/$1$insert/g;
     my %courselist=&Apache::lonnet::dump(      $result =~ s/&\s*REMOVETHEHEADOFLONGTABLE\\\\/\\\\/g;
                    'classlist',      return $result,$number_of_columns;
    $ENV{'course.'.$ENV{'request.course.id'}.'.domain'},  }
    $ENV{'course.'.$ENV{'request.course.id'}.'.num'});  
     my $now=time;  
     $r->print(<<ENDDISHEADER);  sub details_for_menu {
 <script>      my ($helper)=@_;
     function checkall() {      my $postdata=$env{'form.postdata'};
  for (i=0; i<document.forms.printform.elements.length; i++) {      if (!$postdata) { $postdata=$helper->{VARS}{'postdata'}; }
             if       my $name_of_resource = &Apache::lonnet::gettitle($postdata);
           (document.forms.printform.elements[i].name.indexOf('whomtoprint')==0) {      my $symbolic = &Apache::lonnet::symbread($postdata);
       document.forms.printform.elements[i].checked=true;      return if ( $symbolic eq '');
             }  
         }      my ($map,$id,$resource)=&Apache::lonnet::decode_symb($symbolic);
       $map=&Apache::lonnet::clutter($map);
       my $name_of_sequence = &Apache::lonnet::gettitle($map);
       if ($name_of_sequence =~ /^\s*$/) {
    $map =~ m|([^/]+)$|;
    $name_of_sequence = $1;
       }
       my $name_of_map = &Apache::lonnet::gettitle($env{'request.course.uri'});
       if ($name_of_map =~ /^\s*$/) {
    $env{'request.course.uri'} =~ m|([^/]+)$|;
    $name_of_map = $1;
     }      }
       return ($name_of_resource,$name_of_sequence,$name_of_map);
   }
   
     function checksec() {  sub copyright_line {
  for (i=0; i<document.forms.printform.elements.length; i++) {      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 } ';
             if   }
           (document.forms.printform.elements[i].value.indexOf  my $end_of_student = "\n".'\special{ps:ENDOFSTUDENTSTAMP}'."\n";
            (document.forms.printform.chksec.value)==0) {  
       document.forms.printform.elements[i].checked=true;  sub latex_corrections {
             }      my ($number_of_columns,$result,$selectionmade,$answer_mode) = @_;
         }  #    $result =~ s/\\includegraphics{/\\includegraphics\[width=\\minipagewidth\]{/g;
       my $copyright = &copyright_line();
       if ($selectionmade eq '1' || $answer_mode eq 'only') {
    $result =~ s/(\\end{document})/\\strut\\vskip 0 mm $copyright $end_of_student $1/;
       } else {
    $result =~ s/(\\end{document})/\\strut\\vspace\*{-4 mm}\\newline $copyright $end_of_student $1/;
       }
       $result =~ s/\$number_of_columns/$number_of_columns/g;
       $result =~ s/(\\end{longtable}\s*)(\\strut\\newline\\noindent\\makebox\[\\textwidth\/$number_of_columns\]\[b\]{\\hrulefill})/$2$1/g;
       $result =~ s/(\\end{longtable}\s*)\\strut\\newline/$1/g;
   #-- LaTeX corrections     
       my $first_comment = index($result,'<!--',0);
       while ($first_comment != -1) {
    my $end_comment = index($result,'-->',$first_comment);
    substr($result,$first_comment,$end_comment-$first_comment+3) = '';
    $first_comment = index($result,'<!--',$first_comment);
       }
       $result =~ s/^\s+$//gm; #remove empty lines
       #removes more than one empty space
       $result =~ s|(\s\s+)|($1=~/[\n\r]/)?"\n":" "|ge;
       $result =~ s/\\\\\s*\\vskip/\\vskip/gm;
       $result =~ s/\\\\\s*\\noindent\s*(\\\\)+/\\\\\\noindent /g;
       $result =~ s/{\\par }\s*\\\\/\\\\/gm;
       $result =~ s/\\\\\s+\[/ \[/g;
       #conversion of html characters to LaTeX equivalents
       if ($result =~ m/&(\w+|#\d+);/) {
    $result = &character_chart($result);
     }      }
       $result =~ s/(\\end{tabular})\s*\\vskip 0 mm/$1/g;
       $result =~ s/(\\begin{enumerate})\s*\\noindent/$1/g;
       return $result;
   }
   
     function uncheckall() {  
  for (i=0; i<document.forms.printform.elements.length; i++) {  sub index_table {
             if       my $currentURL = shift;
           (document.forms.printform.elements[i].name.indexOf('whomtoprint')==0) {      my $insex_string='';
       document.forms.printform.elements[i].checked=false;      $currentURL=~s/\.([^\/+])$/\.$1\.meta/;
             }      $insex_string=&Apache::lonnet::metadata($currentURL,'keywords');
         }      return $insex_string;
   }
   
   
   sub IndexCreation {
       my ($texversion,$currentURL)=@_;
       my @key_words=split(/,/,&index_table($currentURL));
       my $chunk='';
       my $st=index $texversion,'\addcontentsline{toc}{subsection}{';
       if ($st>0) {
    for (my $i=0;$i<3;$i++) {$st=(index $texversion,'}',$st+1);}
    $chunk=substr($texversion,0,$st+1);
    substr($texversion,0,$st+1)=' ';
       }
       foreach my $key_word (@key_words) {
    if ($key_word=~/\S+/) {
       $texversion=~s/\b($key_word)\b/$1 \\index{$key_word} /i;
    }
       }
       if ($st>0) {substr($texversion,0,1)=$chunk;}
       return $texversion;
   }
   
   sub print_latex_header {
       my $mode=shift;
       my $output='\documentclass[letterpaper,twoside]{article}\raggedbottom';
       if (($mode eq 'batchmode') || (!$perm{'pav'})) {
    $output.='\batchmode';
       }
       $output.='\newcommand{\keephidden}[1]{}\renewcommand{\deg}{$^{\circ}$}'."\n".
          '\usepackage{multirow}'."\n".
        '\usepackage{longtable}\usepackage{textcomp}\usepackage{makeidx}'."\n".
        '\usepackage[dvips]{graphicx}\usepackage{epsfig}'."\n".
        '\usepackage{wrapfig}'.
        '\usepackage{picins}\usepackage{calc}'."\n".
        '\newenvironment{choicelist}{\begin{list}{}{\setlength{\rightmargin}{0in}'."\n".
        '\setlength{\leftmargin}{0.13in}\setlength{\topsep}{0.05in}'."\n".
        '\setlength{\itemsep}{0.022in}\setlength{\parsep}{0in}'."\n".
        '\setlength{\belowdisplayskip}{0.04in}\setlength{\abovedisplayskip}{0.05in}'."\n".
        '\setlength{\abovedisplayshortskip}{-0.04in}'."\n".
        '\setlength{\belowdisplayshortskip}{0.04in}}}{\end{list}}'."\n".
        '\renewenvironment{theindex}{\begin{list}{}{{\vskip 1mm \noindent \large'."\n".
        '\textbf{Index}} \newline \setlength{\rightmargin}{0in}'."\n".
        '\setlength{\leftmargin}{0.13in}\setlength{\topsep}{0.01in}'."\n".
        '\setlength{\itemsep}{0.1in}\setlength{\parsep}{-0.02in}'."\n".
        '\setlength{\belowdisplayskip}{0.01in}\setlength{\abovedisplayskip}{0.01in}'."\n".
        '\setlength{\abovedisplayshortskip}{-0.04in}'."\n".
        '\setlength{\belowdisplayshortskip}{0.01in}}}{\end{list}}\begin{document}'."\n";
       return $output;     
   }
   
   sub path_to_problem {
       my ($urlp,$colwidth)=@_;
       $urlp=&Apache::lonnet::clutter($urlp);
   
       my $newurlp = '';
       $colwidth=~s/\s*mm\s*$//;
   #characters average about 2 mm in width
       if (length($urlp)*2 > $colwidth) {
    my @elements = split('/',$urlp);
    my $curlength=0;
    foreach my $element (@elements) {
       if ($element eq '') { next; }
       if ($curlength+(length($element)*2) > $colwidth) {
    $newurlp .=  '|\vskip -1 mm \verb|';
    $curlength=length($element)*2;
       } else {
    $curlength+=length($element)*2;
       }
       $newurlp.='/'.$element;
    }
       } else {
    $newurlp=$urlp;
     }      }
 </script>      return '{\small\noindent\verb|'.$newurlp.'|\vskip 0 mm}';
 <input type=button onClick="checkall()" value="Check for All">&nbsp;  }
 <input type=button onClick="checksec()" value="Check for Section/Group">  
 <input type=text size=5 name=chksec>&nbsp;  sub recalcto_mm {
 <input type=button onClick="uncheckall()" value="Check for None">      my $textwidth=shift;
 <p>      my $LaTeXwidth;
 ENDDISHEADER      if ($textwidth=~/(-?\d+\.?\d*)\s*cm/) {
     my $i = 0;   $LaTeXwidth = $1*10;
     foreach (sort keys %courselist) {      } elsif ($textwidth=~/(-?\d+\.?\d*)\s*mm/) {
         my ($end,$start)=split(/\:/,$courselist{$_});   $LaTeXwidth = $1;
         my $active=1;      } elsif ($textwidth=~/(-?\d+\.?\d*)\s*in/) {
         if (($end) && ($now>$end)) { $active=0; }   $LaTeXwidth = $1*25.4;
         if ($active) {  
            my ($sname,$sdom)=split(/\:/,$_);  
            my %reply=&Apache::lonnet::get('environment',  
               ['firstname','middlename','lastname','generation'],  
               $sdom,$sname);  
            my $section=&Apache::lonnet::usection  
        ($sdom,$sname,$ENV{'request.course.id'});  
            $r->print(  
         '<br /><input type=checkbox name="whomtoprint'.$i.'" value="'.$section.':'.$_.'"> '.  
       $reply{'firstname'}.' '.   
                       $reply{'middlename'}.' '.  
                       $reply{'lastname'}.' '.  
                       $reply{'generation'}.  
                       ' ('.$_.') '.$section);  
    $i++;  
         }   
     }      }
     $r->print(<<ENDMENUOUT2);      $LaTeXwidth.=' mm';
 <br />      return $LaTeXwidth;
 <input type="hidden" name="numberofstudents" value="$i">  }
 <input type="hidden" name="phase" value="three">  
 <input type="submit" value="Submit">  sub get_textwidth {
 ENDMENUOUT2      my ($helper,$LaTeXwidth)=@_;
       my $textwidth=$LaTeXwidth;
       if ($helper->{'VARS'}->{'pagesize.width'}=~/\d+/ &&
    $helper->{'VARS'}->{'pagesize.widthunit'}=~/\w+/) {
    $textwidth=&recalcto_mm($helper->{'VARS'}->{'pagesize.width'}.' '.
    $helper->{'VARS'}->{'pagesize.widthunit'});
       }
       return $textwidth;
 }  }
   
   
 sub additional_print_menu {   sub unsupported {
     my $r = shift;      my ($currentURL,$mode,$symb)=@_;
     my $what_to_print = '';      if ($mode ne '') {$mode='\\'.$mode}
     for (my $i=0; $i<$ENV{'form.numberofstudents'};$i++) {      my $result.= &print_latex_header($mode);
  $what_to_print .= '<input type="hidden" name="whomtoprint'.$i.'" value="'.$ENV{'form.whomtoprint'.$i}.'">';      if ($currentURL=~m|^(/adm/wrapper/)?ext/|) {
     }   $currentURL=~s|^(/adm/wrapper/)?ext/|http://|;
     for (my $i=0; $i<$ENV{'form.numberofproblems'};$i++) {   my $title=&Apache::lonnet::gettitle($symb);
  $what_to_print .= '<input type="hidden" name="whattoprint'.$i.'" value="'.$ENV{'form.whattoprint'.$i}.'">';   $title = &Apache::lonxml::latex_special_symbols($title);
     }   $result.=' \strut \\\\ '.$title.' \strut \\\\ '.$currentURL.' ';
     $r->print(<<ENDMENUOUT);      } else {
     $what_to_print   $result.=$currentURL;
 <input type="hidden" name="url" value="$ENV{'form.url'}">      }
 <input type="hidden" name="choice" value="$ENV{'form.choice'}">      $result.= '\vskip 0.5mm\noindent\makebox[\textwidth/$number_of_columns][b]{\hrulefill} \end{document}';
 <input type="hidden" name="layout" value="$ENV{'form.layout'}">      return $result;
 <input type="hidden" name="numberofstudents" value="$ENV{'form.numberofstudents'}">  }
 <input type="hidden" name="numberofproblems" value="$ENV{'form.numberofproblems'}">  
 <input type="hidden" name="numberofcolumns" value="$ENV{'form.numberofcolumns'}">  
 Define page layout parameters: <br />  #
 <b>Width</b>: <input type="text" name="width" width="8" value="9cm"> <br />  # List of recently generated print files
 <b>Height</b>: <input type="text" name="height" width="8" value="25.9cm"> <br />  #
 <b>Left margin</b>: <input type="text" name="leftmargin" width="8" value="-0.57in"> <br />  sub recently_generated {
 <input type="hidden" name="phase" value="four">      my $r=shift;
 <input type="submit" value="Submit">      my $prtspool=$r->dir_config('lonPrtDir');
 </form>      my $zip_result;
 </body>      my $pdf_result;
 </html>      opendir(DIR,$prtspool);
 ENDMENUOUT  
       my @files = 
    grep(/^$env{'user.name'}_$env{'user.domain'}_printout_(\d+)_.*\.(pdf|zip)$/,readdir(DIR));
       closedir(DIR);
   
       @files = sort {
    my ($actime) = (stat($prtspool.'/'.$a))[10];
    my ($bctime) = (stat($prtspool.'/'.$b))[10];
    return $bctime <=> $actime;
       } (@files);
   
       foreach my $filename (@files) {
    my ($ext) = ($filename =~ m/(pdf|zip)$/);
    my ($cdev,$cino,$cmode,$cnlink,
       $cuid,$cgid,$crdev,$csize,
       $catime,$cmtime,$cctime,
       $cblksize,$cblocks)=stat($prtspool.'/'.$filename);
    my $result="<a href='/prtspool/$filename'>".
       &mt('Generated [_1] ([_2] bytes)',
    &Apache::lonlocal::locallocaltime($cctime),$csize).
    '</a><br />';
    if ($ext eq 'pdf') { $pdf_result .= $result; }
    if ($ext eq 'zip') { $zip_result .= $result; }
       }
       if ($zip_result) {
    $r->print('<h4>'.&mt('Recently generated printout zip files')."</h4>\n"
     .$zip_result);
       }
       if ($pdf_result) {
    $r->print('<h4>'.&mt('Recently generated printouts')."</h4>\n"
     .$pdf_result);
       }
   }
   
   #
   #   Retrieve the hash of page breaks.
   #
   #  Inputs:
   #    helper   - reference to helper object.
   #  Outputs
   #    A reference to a page break hash.
   #
   #
   #use Data::Dumper;
   #sub dump_helper_vars {
   #    my ($helper) = @_;
   #    my $helpervars = Dumper($helper->{'VARS'});
   #    &Apache::lonnet::logthis("Dump of helper vars:\n $helpervars");
   #}
   
   sub get_page_breaks  {
       my ($helper) = @_;
       my %page_breaks;
   
       foreach my $break (split /\|\|\|/, $helper->{'VARS'}->{'FINISHPAGE'}) {
    $page_breaks{$break} = 1;
       }
       return %page_breaks;
 }  }
   
   #  Output a sequence (recursively if neeed)
   #  from construction space.
   # Parameters:
   #    url     = URL of the sequence to print.
   #    helper  - Reference to the helper hash.
   #    form    - Copy of the format hash.
   #    LaTeXWidth
   # Returns:
   #   Text to add to the printout.
   #   NOTE if the first element of the outermost sequence
   #   is itself a sequence, the outermost caller may need to
   #   prefix the latex with the page headers stuff.
   #
   sub print_construction_sequence {
       my ($currentURL, $helper, %form, $LaTeXwidth) = @_;
       my $result;
       my $rndseed=time;
       if ($helper->{'VARS'}->{'curseed'}) {
    $rndseed=$helper->{'VARS'}->{'curseed'};
       }
       my $errtext=&LONCAPA::map::mapread($currentURL);
       # 
       #  These make this all support recursing for subsequences.
       #
       my @order    = @LONCAPA::map::order;
       my @resources = @LONCAPA::map::resources; 
       for (my $member=0;$member<=$#order;$member++) {
    $resources[$order[$member]]=~/^([^:]*):([^:]*):/;
    my $urlp=$2;
    if ($urlp=~/\.(problem|exam|quiz|assess|survey|form|library|xml|html|htm|xhtml|xhtm)$/) {
       my $texversion='';
       if ($helper->{'VARS'}->{'ANSWER_TYPE'} ne 'only') {
    $form{'problem_split'}=$parmhash{'problem_stream_switch'};
    $form{'suppress_tries'}=$parmhash{'suppress_tries'};
    $form{'latex_type'}=$helper->{'VARS'}->{'LATEX_TYPE'};
    $form{'rndseed'}=$rndseed;
    $resources_printed .=$urlp.':';
    $texversion=&Apache::lonnet::ssi($urlp,%form);
       }
       if((($helper->{'VARS'}->{'ANSWER_TYPE'} eq 'no') ||
    ($helper->{'VARS'}->{'ANSWER_TYPE'} eq 'only')) && 
          ($urlp=~/\.(problem|exam|quiz|assess|survey|form|library|page)$/)) {
    #  Don't permanently modify %$form...
    my %answerform = %form;
    $answerform{'grade_target'}='answer';
    $answerform{'answer_output_mode'}='tex';
    $answerform{'rndseed'}=$rndseed;
    $answerform{'problem_split'}=$parmhash{'problem_stream_switch'};
    if ($urlp=~/\/res\//) {$env{'request.state'}='published';}
    $resources_printed .= $urlp.':';
    my $answer=&Apache::lonnet::ssi($urlp,%answerform);
    if ($helper->{'VARS'}->{'ANSWER_TYPE'} eq 'no') {
       $texversion=~s/(\\keephidden{ENDOFPROBLEM})/$answer$1/;
    } else {
       # If necessary, encapsulate answer in minipage:
       
       $texversion=&print_latex_header($helper->{'VARS'}->{'LATEX_TYPE'});
       my $title = &Apache::lonnet::gettitle($helper->{'VARS'}->{'symb'});
       $title = &Apache::lonxml::latex_special_symbols($title);
       my $body ='\vskip 0 mm \noindent\textbf{'.$title.'}\vskip 0 mm ';
       $body.=&path_to_problem($urlp,$LaTeXwidth);
       $body.='\vskip 1 mm '.$answer.'\end{document}';
       $body = &encapsulate_minipage($body);
       $texversion.=$body;
    }
       }
       $texversion = &latex_header_footer_remove($texversion);
   
       if ($helper->{'VARS'}->{'TABLE_INDEX'} eq 'yes') {
    $texversion=&IndexCreation($texversion,$urlp);
       }
       if ($helper->{'VARS'}->{'CONSTR_RESOURSE_URL'} eq 'yes') {
    $texversion=~s/(\\addcontentsline\{toc\}\{subsection\}\{[^\}]*\})/$1 URL: \\verb|$urlp| \\strut\\\\\\strut /;
       }
       $result.=$texversion;
   
    } elsif ($urlp=~/\.(sequence|page)$/) {
       
       # header:
   
       $result.='\strut\newline\noindent Sequence/page '.$urlp.'\strut\newline\noindent\makebox[\textwidth/$number_of_columns][b]{\hrulefill}\newline\noindent ';
   
       # IF sequence, recurse:
       
       if ($urlp =~ /\.sequence$/) {
    my $sequence_url = $urlp;
    my $domain       = $env{'user.domain'}; # Constr. space only on local
    my $user         = $env{'user.name'};
   
    $sequence_url    =~ s/^\/res\/$domain/\/home/;
    $sequence_url    =~ s/^(\/home\/$user)/$1\/public_html/;
   # $sequence_url    =~ s|\/~([^\/]+)\/|\/home\/$1\/public_html\/|;
    $result .= &print_construction_sequence($sequence_url, 
    $helper, %form, 
    $LaTeXwidth);
       }
    }  
       }
       if ($helper->{VARS}->{'construction'} eq '1') {$result=~s/(\\begin{document})/$1 \\fbox\{RANDOM SEED IS $rndseed\} /;}
       return $result;
   }
   
 sub output_data {  sub output_data {
     my $r = shift;      my ($r,$helper,$rparmhash) = @_;
     $r->print(<<ENDPART);      my %parmhash = %$rparmhash;
 <html>      $resources_printed = '';
 <head>      my $js = <<ENDPART;
 <title>LON-CAPA output for printing</title>  <script type="text/javascript">
 </head>      var editbrowser;
 <body bgcolor="FFFFFF">      function openbrowser(formname,elementname,only,omit) {
 <hr>          var url = '/res/?';
           if (editbrowser == null) {
               url += 'launch=1&';
           }
           url += 'catalogmode=interactive&';
           url += 'mode=parmset&';
           url += 'form=' + formname + '&';
           if (only != null) {
               url += 'only=' + only + '&';
           } 
           if (omit != null) {
               url += 'omit=' + omit + '&';
           }
           url += 'element=' + elementname + '';
           var title = 'Browser';
           var options = 'scrollbars=1,resizable=1,menubar=0';
           options += ',width=700,height=600';
           editbrowser = open(url,title,options,'1');
           editbrowser.focus();
       }
   </script>
 ENDPART  ENDPART
   
     my $choice = $ENV{'form.choice'};      my $start_page  = &Apache::loncommon::start_page('Preparing Printout',$js);
     my $layout = $ENV{'form.layout'};      my $msg = &mt('Please stand by while processing your print request, this may take some time ...');
     my $numberofcolumns = $ENV{'form.numberofcolumns'};                 
     my $laystyle = 'book';      $r->print($start_page."\n<p>\n$msg\n</p>\n");
     my $result = '';  
     my $number_of_columns = 1;      # fetch the pagebreaks and store them in the course environment
     my $selectionmade = '';      # The page breaks will be pulled into the hash %page_breaks which is
        # indexed by symb and contains 1's for each break.
     if ($choice eq 'Standard LaTeX output for current document') {  
       #-- single document - problem, page, html, xml        $env{'form.pagebreaks'}  = $helper->{'VARS'}->{'FINISHPAGE'};
       $selectionmade = 1;      $env{'form.lastprinttype'} = $helper->{'VARS'}->{'PRINT_TYPE'}; 
       my %moreenv;      &Apache::loncommon::store_course_settings('print',
       $moreenv{'form.grade_target'}='tex';        {'pagebreaks'    => 'scalar',
       if ($ENV{'request.role'}=~m/^au\./ or $ENV{'request.role'}=~m/^ca\./) {         'lastprinttype' => 'scalar'});
   $ENV{'form.url'}=~s/http:\/\/[^\/]+//;  
       }      my %page_breaks  = &get_page_breaks($helper);
       $moreenv{'request.filename'}=$ENV{'form.url'};  
       &Apache::lonnet::appenv(%moreenv);      my $format_from_helper = $helper->{'VARS'}->{'FORMAT'};
       my $texversion=&Apache::lonnet::ssi($ENV{'form.url'});      my ($result,$selectionmade) = ('','');
       &Apache::lonnet::delenv('form.grade_target');      my $number_of_columns = 1; #used only for pages to determine the width of the cell
       $result .= $texversion;      my @temporary_array=split /\|/,$format_from_helper;
       $result = &additional_cleanup($result);      my ($laystyle,$numberofcolumns,$papersize)=@temporary_array;
       if ($ENV{'form.url'}=~m/\.page\s*$/) {      if ($laystyle eq 'L') {
   ($result,$number_of_columns) = &page_cleanup($result);   $laystyle='album';
       }      } else {
     } elsif ($choice eq 'Standard LaTeX output for the primary sequence' or    $laystyle='book';
              $choice eq 'Standard LaTeX output for whole primary sequence') {      }
       #-- minimal sequence to which the current document belongs      my ($textwidth,$textheight,$oddoffset,$evenoffset) = &page_format($papersize,$laystyle,$numberofcolumns);
         #-- where is the primary sequence containing file?      my $assignment =  $env{'form.assignment'};
  my $symbolic = &Apache::lonnet::symbread($ENV{'form.url'});      my $LaTeXwidth=&recalcto_mm($textwidth); 
  $symbolic =~ m/([^_]+)_/;      my @print_array=();
  my $primary_sequence = '/res/'.$1;      my @student_names=();
         #-- open and analyses the primary sequence  
  my $sequence_file=&Apache::lonnet::filelocation("",$primary_sequence);      #  Common settings for the %form has:
  my $sequencefilecontents=&Apache::lonnet::getfile($sequence_file);      # In some cases these settings get overriddent by specific cases, but the
  my @master_seq = &content_map($sequencefilecontents);      # settings are common enough to make it worthwhile factoring them out
         #-- produce an output string      # here.
  for (my $i=0;$i<=$#master_seq;$i++) {      #
     $_ = $master_seq[$i];      my %form;
     m/\"(.*)\"/;      $form{'grade_target'} = 'tex';
             $_ = $1;      $form{'textwidth'}    = &get_textwidth($helper, $LaTeXwidth);
             my $urlp = $1;  
     if ($choice eq 'Standard LaTeX output for the primary sequence') {      # If form.showallfoils is set, then request all foils be shown:
  $selectionmade = 2;      # privilege will be enforced both by not allowing the 
  if ($urlp =~ m/\.(problem|exam|quiz|assess|survey|form|library)/) {      # check box selecting this option to be presnt unless it's ok,
     my %moreenv;      # and by lonresponse's priv. check.
     $moreenv{'form.grade_target'}='tex';      # The if is here because lonresponse.pm only cares that
     &Apache::lonnet::appenv(%moreenv);      # showallfoils is defined, not what the value is.
     my $texversion=&Apache::lonnet::ssi($urlp);  
     &Apache::lonnet::delenv('form.grade_target');      if ($helper->{'VARS'}->{'showallfoils'} eq "1") { 
     $result .= $texversion;           $form{'showallfoils'} = $helper->{'VARS'}->{'showallfoils'};
  }      }
     } elsif ($urlp =~ /\S+/) {  
  $selectionmade = 3;      if ($helper->{'VARS'}->{'PRINT_TYPE'} eq 'current_document') {
         #-- single document - problem, page, html, xml, ...
    my ($currentURL,$cleanURL);
   
    if ($helper->{'VARS'}->{'construction'} ne '1') {
               #prints published resource
       $currentURL=$helper->{'VARS'}->{'postdata'};
       $cleanURL=&Apache::lonenc::check_decrypt($currentURL);
    } else {
               #prints resource from the construction space
       $currentURL='/'.$helper->{'VARS'}->{'filename'};
       if ($currentURL=~/([^?]+)/) {$currentURL=$1;}
       $cleanURL=$currentURL;
    }
    $selectionmade = 1;
    if ($cleanURL!~m|^/adm/|
       && $cleanURL=~/\.(problem|exam|quiz|assess|survey|form|library|page|xml|html|htm|xhtml|xhtm)$/) {
       my $rndseed=time;
       my $texversion='';
       if ($helper->{'VARS'}->{'ANSWER_TYPE'} ne 'only') {
  my %moreenv;   my %moreenv;
  $moreenv{'form.grade_target'}='tex';   $moreenv{'request.filename'}=$cleanURL;
    if ($helper->{'VARS'}->{'style_file'}=~/\w/) {
       $moreenv{'construct.style'}=$helper->{'VARS'}->{'style_file'};
       my $dom = $env{'user.domain'};
       my $user = $env{'user.name'};
       my $put_result = &Apache::lonnet::put('environment',{'construct.style'=>$helper->{'VARS'}->{'style_file'}},$dom,$user);
    }
                   if ($helper->{'VARS'}->{'probstatus'} eq 'exam') {$form{'problemtype'}='exam';}
    $form{'problem_split'}=$parmhash{'problem_stream_switch'};
    $form{'suppress_tries'}=$parmhash{'suppress_tries'};
    $form{'latex_type'}=$helper->{'VARS'}->{'LATEX_TYPE'};
    $form{'print_discussions'}=$helper->{'VARS'}->{'PRINT_DISCUSSIONS'};
    if ($helper->{'VARS'}->{'PRINT_DISCUSSIONS'} eq 'yes') {$form{'problem_split'}='yes';}
    if ($helper->{'VARS'}->{'curseed'}) {
       $rndseed=$helper->{'VARS'}->{'curseed'};
    }
    $form{'rndseed'}=$rndseed;
  &Apache::lonnet::appenv(%moreenv);   &Apache::lonnet::appenv(%moreenv);
  my $texversion=&Apache::lonnet::ssi($urlp);  
  &Apache::lonnet::delenv('form.grade_target');   &Apache::lonxml::clear_problem_counter();
  $result .= $texversion;      
     }   $resources_printed .= $currentURL.':';
  }   $texversion.=&Apache::lonnet::ssi($currentURL,%form);
  $result = &additional_cleanup($result);  
     }  elsif ($choice eq 'Standard LaTeX output for the top level sequence') {   &Apache::lonxml::clear_problem_counter();
         # where is the main sequence of the course?  
  $selectionmade = 4;   &Apache::lonnet::delenv('request.filename');
  my $main_seq = '/res/'.$ENV{'request.course.uri'};  
  my $file=&Apache::lonnet::filelocation("",$main_seq);  
  my $filecontents=&Apache::lonnet::getfile($file);  
  my @file_seq = &content_map($filecontents);  
  for (my $iu=0;$iu<=$#file_seq;$iu++) {  
     $file_seq[$iu]=~s/^"//;  
     $file_seq[$iu]=~s/"$//;  
     if ($file_seq[$iu]=~m/\S+/) {  
  $file_seq[$iu]=&Apache::lonnet::filelocation("",$file_seq[$iu]);  
     } else {  
  $file_seq[$iu]= 'REMOVE IT PLEASE';  
     }      }
  }      # current document with answers.. no need to encap in minipage
  my $i=0;      #  since there's only one answer.
         my $limit = $#file_seq;      
         while ($i<=$limit) {      if(($helper->{'VARS'}->{'ANSWER_TYPE'} eq 'no') ||
     unless ($file_seq[$i]=~m/\.(problem|page)/) {         ($helper->{'VARS'}->{'ANSWER_TYPE'} eq 'only')) {
  if ($file_seq[$i]=~m/\.sequence/) {   $form{'problem_split'}=$parmhash{'problem_stream_switch'};
     my $filecontents=&Apache::lonnet::getfile($file_seq[$i]);   $form{'grade_target'}='answer';
     my @newfile_seq = &content_map($filecontents);   $form{'answer_output_mode'}='tex';
     for (my $iu=0;$iu<=$#newfile_seq;$iu++) {   $form{'rndseed'}=$rndseed;
  $newfile_seq[$iu]=~s/^"//;                  if ($helper->{'VARS'}->{'probstatus'} eq 'exam') {
                 $newfile_seq[$iu]=~s/"$//;      $form{'problemtype'}='exam';
  if ($newfile_seq[$iu]=~m/\S+/) {   }
     $newfile_seq[$iu]=&Apache::lonnet::filelocation("",$newfile_seq[$iu]);   $resources_printed .= $currentURL.':';
  } else {   my $answer=&Apache::lonnet::ssi($currentURL,%form);
     $newfile_seq[$iu]= 'REMOVE IT PLEASE';   if ($helper->{'VARS'}->{'ANSWER_TYPE'} eq 'no') {
  }      $texversion=~s/(\\keephidden{ENDOFPROBLEM})/$answer$1/;
     }  
     splice @file_seq,$i,1,@newfile_seq;  
     $i=0;  
     $limit = $#file_seq;  
  } else {   } else {
     splice @file_seq,$i,1,'REMOVE IT PLEASE';      $texversion=&print_latex_header($helper->{'VARS'}->{'LATEX_TYPE'});
       if ($helper->{'VARS'}->{'construction'} ne '1') {
    my $title = &Apache::lonnet::gettitle($helper->{'VARS'}->{'symb'});
    $title = &Apache::lonxml::latex_special_symbols($title);
    $texversion.='\vskip 0 mm \noindent\textbf{'.$title.'}\vskip 0 mm ';
    $texversion.=&path_to_problem($cleanURL,$LaTeXwidth);
       } else {
    $texversion.='\vskip 0 mm \noindent\textbf{Prints from construction space - there is no title.}\vskip 0 mm ';
    my $URLpath=$cleanURL;
    $URLpath=~s/~([^\/]+)/public_html\/$1\/$1/;
    $texversion.=&path_to_problem ($URLpath,$LaTeXwidth);
       }
       $texversion.='\vskip 1 mm '.$answer.'\end{document}';
  }   }
     }      }
     $i++;      if ($helper->{'VARS'}->{'TABLE_INDEX'} eq 'yes') {
  }   $texversion=&IndexCreation($texversion,$currentURL);
  for (my $iu=0;$iu<=$#file_seq;$iu++) {  
     if ($file_seq[$iu]=~m/REMOVE IT PLEASE/) {  
  splice @file_seq,$iu,1;  
     }      }
       if ($helper->{'VARS'}->{'CONSTR_RESOURSE_URL'} eq 'yes') {
    $texversion=~s/(\\addcontentsline\{toc\}\{subsection\}\{[^\}]*\})/$1 URL: \\verb|$currentURL| \\strut\\\\\\strut /;
   
       }
       $result .= $texversion;
       if ($currentURL=~m/\.page\s*$/) {
    ($result,$number_of_columns) = &page_cleanup($result);
       }
           } elsif ($cleanURL!~m|^/adm/|
    && $currentURL=~/\.sequence$/ && $helper->{'VARS'}->{'construction'} eq '1') {
               #printing content of sequence from the construction space
       $currentURL=~s|\/~([^\/]+)\/|\/home\/$1\/public_html\/|;
       $result .= &print_latex_header($helper->{'VARS'}->{'LATEX_TYPE'});
       $result .= &print_construction_sequence($currentURL, $helper, %form,
       $LaTeXwidth);
       $result .= '\end{document}';  
       if (!($result =~ /\\begin\{document\}/)) {
    $result = &print_latex_header() . $result;
       }
       # End construction space sequence.
    } elsif ($cleanURL=~/\/(smppg|syllabus|aboutme|bulletinboard)$/) { 
    $form{'latex_type'}=$helper->{'VARS'}->{'LATEX_TYPE'};
    if ($currentURL=~/\/syllabus$/) {$currentURL=~s/\/res//;}
    $resources_printed .= $currentURL.':';
    my $texversion=&Apache::lonnet::ssi($currentURL,%form);
    $result .= $texversion;
    } else {
       $result.=&unsupported($currentURL,$helper->{'VARS'}->{'LATEX_TYPE'},
     $helper->{'VARS'}->{'symb'});
  }   }
  if ($file_seq[-1]=~m/REMOVE IT PLEASE/) {      } elsif (($helper->{'VARS'}->{'PRINT_TYPE'} eq 'map_problems')       or
     pop @file_seq;               ($helper->{'VARS'}->{'PRINT_TYPE'} eq 'map_problems_pages') or
  }               ($helper->{'VARS'}->{'PRINT_TYPE'} eq 'all_problems')       or
        ($helper->{'VARS'}->{'PRINT_TYPE'} eq 'all_resources')      or # BUGBUG
        ($helper->{'VARS'}->{'PRINT_TYPE'} eq 'select_sequences')) { 
         #-- produce an output string          #-- produce an output string
  for (my $i=0;$i<=$#file_seq;$i++) {   if ($helper->{'VARS'}->{'PRINT_TYPE'} eq 'map_problems') {
             my $urlp = $file_seq[$i];      $selectionmade = 2;
     $urlp=~s/\/home\/httpd\/html//;       } elsif ($helper->{'VARS'}->{'PRINT_TYPE'} eq 'map_problems_pages') {
             if ($urlp=~m/\.(problem|exam|quiz|assess|survey|form|library)/) {      $selectionmade = 3;
  my %moreenv;   } elsif ($helper->{'VARS'}->{'PRINT_TYPE'} eq 'all_problems') {
  $moreenv{'form.grade_target'}='tex';      $selectionmade = 4;
  &Apache::lonnet::appenv(%moreenv);   } elsif ($helper->{'VARS'}->{'PRINT_TYPE'} eq 'all_resources') {  #BUGBUG
  my $texversion=&Apache::lonnet::ssi($urlp);      $selectionmade = 4;
  &Apache::lonnet::delenv('form.grade_target');   } elsif ($helper->{'VARS'}->{'PRINT_TYPE'} eq 'select_sequences') {
  $result .= $texversion;              $selectionmade = 7;
     }   }
  }       $form{'problem_split'}=$parmhash{'problem_stream_switch'};
  $result = &additional_cleanup($result);   $form{'suppress_tries'}=$parmhash{'suppress_tries'};
     } elsif ($choice eq 'All class print') {    $form{'latex_type'}=$helper->{'VARS'}->{'LATEX_TYPE'};
     #-- prints assignments for whole class or for selected students     $form{'print_discussions'}=$helper->{'VARS'}->{'PRINT_DISCUSSIONS'};
  $selectionmade = 5;   if ($helper->{'VARS'}->{'PRINT_DISCUSSIONS'} eq 'yes') {$form{'problem_split'}='yes';}
         my (@students,@st_output) = ((),());   my $flag_latex_header_remove = 'NO';
  for (my $i=0; $i<$ENV{'form.numberofstudents'};$i++) {   my $flag_page_in_sequence = 'NO';
     if ($ENV{'form.whomtoprint'.$i}=~/:/) {   my @master_seq=split /\|\|\|/, $helper->{'VARS'}->{'RESOURCES'};
  push @students,$ENV{'form.whomtoprint'.$i};   my $prevassignment='';
     }  
  }   &Apache::lonxml::clear_problem_counter();
  #where is the primary sequence containing current resource (the same for all students)?  
  my $symbolic = &Apache::lonnet::symbread($ENV{'form.url'});   my $pbreakresources = keys %page_breaks;
  $symbolic =~ m/([^_]+)_/;   for (my $i=0;$i<=$#master_seq;$i++) {
  my $primary_sequence = '/res/'.$1;  
  #opens and analyses the primary sequence file, produces the array of resources      # Note due to document structure, not allowed to put \newpage
  my $sequence_file=&Apache::lonnet::filelocation("",$primary_sequence);      # prior to the first resource
  my $sequencefilecontents=&Apache::lonnet::getfile($sequence_file);  
  my @master_seq = &content_map($sequencefilecontents);      if (defined $page_breaks{$master_seq[$i]}) {
         #loop over students   if($i != 0) {
  foreach my $person (@students) {      $result.="\\newpage\n";
     my $current_output = '';   
     my ($usersection,$username,$userdomain) = split /:/,$person;  
     my $fullname = &Apache::grades::get_fullname($username,$userdomain);  
             #goes through all resources, checks if they are available for current student, and produces output   
     foreach my $curres (@master_seq)  {  
  $curres =~ s/^"//;  
  $curres =~ s/"$//;  
                 if ($curres=~/\w+/) {  
     my $symb = &Apache::lonnet::symbread($curres);  
     my ($map,$id,$res_url) = split(/___/,$symb);  
     if (&Apache::lonnet::allowed('bre',$res_url)) {  
  my $rendered = &Apache::loncommon::get_student_view($symb,$username,$userdomain,  
                                                                         $ENV{'request.course.id'},'tex');  
  $current_output .= $rendered;  
     }  
  }   }
     }      }
     $current_output =~ s/\\begin{document}/\\begin{document}\\noindent\\parbox{\\minipagewidth}{\\noindent\\fbox{\\textbf{$fullname}}\\hskip 1\.4in } \\vskip 5 mm /;      my ($sequence,undef,$urlp)=&Apache::lonnet::decode_symb($master_seq[$i]);
     $result .= $current_output;      $urlp=&Apache::lonnet::clutter($urlp);
       $form{'symb'}=$master_seq[$i];
   
       my $assignment=&Apache::lonxml::latex_special_symbols(&Apache::lonnet::gettitle($sequence),'header'); #title of the assignment which contains this problem
       if ($selectionmade==7) {$helper->{VARS}->{'assignment'}=$assignment;}
       if ($i==0) {$prevassignment=$assignment;}
       my $texversion='';
       if ($urlp!~m|^/adm/|
    && $urlp=~/\.(problem|exam|quiz|assess|survey|form|library|page|xml|html|htm|xhtml|xhtm)$/) {
    $resources_printed .= $urlp.':';
   
    &Apache::lonxml::remember_problem_counter();
    $texversion.=&Apache::lonnet::ssi($urlp,%form);
    if ($urlp=~/\.page$/) {
       ($texversion,my $number_of_columns_page) = &page_cleanup($texversion);
       if ($number_of_columns_page > $number_of_columns) {$number_of_columns=$number_of_columns_page;} 
       $texversion =~ s/\\end{document}\d*/\\end{document}/;
       $flag_page_in_sequence = 'YES';
    } 
   
    if(($helper->{'VARS'}->{'ANSWER_TYPE'} eq 'no') ||
      ($helper->{'VARS'}->{'ANSWER_TYPE'} eq 'only')) {
       #  Don't permanently pervert the %form hash
       my %answerform = %form;
       $answerform{'grade_target'}='answer';
       $answerform{'answer_output_mode'}='tex';
       $resources_printed .= $urlp.':';
   
       &Apache::lonxml::restore_problem_counter();
       my $answer=&Apache::lonnet::ssi($urlp,%answerform);
   
       if ($helper->{'VARS'}->{'ANSWER_TYPE'} eq 'no') {
    $texversion=~s/(\\keephidden{ENDOFPROBLEM})/$answer$1/;
       } else {
    if ($urlp=~/\.(problem|exam|quiz|assess|survey|form|library)$/) {
       $texversion=&print_latex_header($helper->{'VARS'}->{'LATEX_TYPE'});
       my $title = &Apache::lonnet::gettitle($master_seq[$i]);
       $title = &Apache::lonxml::latex_special_symbols($title);
       my $body ='\vskip 0 mm \noindent\textbf{'.$title.'}\vskip 0 mm ';
       $body   .= &path_to_problem ($urlp,$LaTeXwidth);
       $body   .='\vskip 1 mm '.$answer;
       $body    = &encapsulate_minipage($body);
       $texversion .= $body;
    } else {
       $texversion='';
    }
       }
    }
    if ($flag_latex_header_remove ne 'NO') {
       $texversion = &latex_header_footer_remove($texversion);
    } else {
       $texversion =~ s/\\end{document}//;
    }
    if ($helper->{'VARS'}->{'TABLE_INDEX'} eq 'yes') {
       $texversion=&IndexCreation($texversion,$urlp);
    }
    if (($selectionmade == 4) and ($assignment ne $prevassignment)) {
       my $name = &get_name();
       my $courseidinfo = &get_course();
       if (defined($courseidinfo)) { $courseidinfo=' - '.$courseidinfo }
       $prevassignment=$assignment;
       my $header_text = $parmhash{'print_header_format'};
       $header_text    = &format_page_header($textwidth, $header_text,
     $assignment, 
     $courseidinfo, 
     $name);
       if ($numberofcolumns eq '1') {
    $result .='\newpage \noindent\parbox{\minipagewidth}{\noindent\\lhead{'.$header_text.'}} \vskip 5 mm ';
       } else {
    $result .='\newpage \noindent\parbox{\minipagewidth}{\noindent\\fancyhead[LO]{'.$header_text.'}} \vskip 5 mm ';
       }
    }
    $result .= $texversion;
    $flag_latex_header_remove = 'YES';   
       } elsif ($urlp=~/\/(smppg|syllabus|aboutme|bulletinboard)$/) { 
    $form{'latex_type'}=$helper->{'VARS'}->{'LATEX_TYPE'};
    if ($urlp=~/\/syllabus$/) {$urlp=~s/\/res//;}
    $resources_printed .= $urlp.':';
    my $texversion=&Apache::lonnet::ssi($urlp,%form);
    if ($flag_latex_header_remove ne 'NO') {
       $texversion = &latex_header_footer_remove($texversion);
    } else {
       $texversion =~ s/\\end{document}/\\vskip 0\.5mm\\noindent\\makebox\[\\textwidth\/\$number_of_columns\]\[b\]\{\\hrulefill\}/;
    }
    $result .= $texversion;
    $flag_latex_header_remove = 'YES'; 
       } else {
    $texversion=&unsupported($urlp,$helper->{'VARS'}->{'LATEX_TYPE'},
    $master_seq[$i]);
    if ($flag_latex_header_remove ne 'NO') {
       $texversion = &latex_header_footer_remove($texversion);
    } else {
       $texversion =~ s/\\end{document}//;
    }
    $result .= $texversion;
    $flag_latex_header_remove = 'YES';   
       }    
       if (&Apache::loncommon::connection_aborted($r)) { last; }
  }   }
  $result = &additional_cleanup($result);   &Apache::lonxml::clear_problem_counter();
     } elsif ($choice eq 'Subdirectory print') {         if ($flag_page_in_sequence eq 'YES') {
       $result =~ s/\\usepackage{calc}/\\usepackage{calc}\\usepackage{longtable}/;
    }
    $result .= '\end{document}';
        } elsif (($helper->{'VARS'}->{'PRINT_TYPE'} eq 'problems_for_students') ||
         ($helper->{'VARS'}->{'PRINT_TYPE'} eq 'resources_for_students')){
   
   
        #-- prints assignments for whole class or for selected students  
    my $type;
    if ($helper->{'VARS'}->{'PRINT_TYPE'} eq 'problems_for_students') {
        $selectionmade=5;
        $type='problems';
    } elsif ($helper->{'VARS'}->{'PRINT_TYPE'} eq 'resources_for_students') {
        $selectionmade=8;
        $type='resources';
    }
    my @students=split /\|\|\|/, $helper->{'VARS'}->{'STUDENTS'};
    #   The normal sort order is by section then by students within the
    #   section. If the helper var student_sort is 1, then the user has elected
    #   to override this and output the students by name.
    #    Each element of the students array is of the form:
    #       username:domain:section:last, first:status
    #    
    #  Note that student sort is not compatible with printing 
    #  1 section per pdf...so that setting overrides.
    #   
    if (($helper->{'VARS'}->{'student_sort'}    eq 1)  && 
        ($helper->{'VARS'}->{'SPLIT_PDFS'} ne "sections")) {
        @students = sort compare_names  @students;
    }
    &adjust_number_to_print($helper);
   
            if ($helper->{'VARS'}->{'NUMBER_TO_PRINT'} eq '0' ||
        $helper->{'VARS'}->{'NUMBER_TO_PRINT'} eq 'all' ) {
        $helper->{'VARS'}->{'NUMBER_TO_PRINT'}=$#students+1;
    }
    # If we are splitting on section boundaries, we need 
    # to remember that in split_on_sections and 
    # print all of the students in the list.
    #
    my $split_on_sections = 0;
    if ($helper->{'VARS'}->{'NUMBER_TO_PRINT'} eq 'section') {
        $split_on_sections = 1;
        $helper->{'VARS'}->{'NUMBER_TO_PRINT'} = $#students+1;
    }
    my @master_seq=split /\|\|\|/, $helper->{'VARS'}->{'RESOURCES'};
   
    #loop over students
    my $flag_latex_header_remove = 'NO'; 
    my %moreenv;
            $moreenv{'instructor_comments'}='hide';
    $moreenv{'textwidth'}=&get_textwidth($helper,$LaTeXwidth);
    $moreenv{'print_discussions'}=$helper->{'VARS'}->{'PRINT_DISCUSSIONS'};
    $moreenv{'problem_split'}    = $parmhash{'problem_stream_switch'};
    $moreenv{'suppress_tries'}   = $parmhash{'suppress_tries'};
    if ($helper->{'VARS'}->{'PRINT_DISCUSSIONS'} eq 'yes') {$moreenv{'problem_split'}='yes';}
    my %prog_state=&Apache::lonhtmlcommon::Create_PrgWin($r,'Print Status','Class Print Status',$#students+1,'inline','75');
    my $student_counter=-1;
    my $i = 0;
    my $last_section = (split(/:/,$students[0]))[2];
    foreach my $person (@students) {
   
                my $duefile="/home/httpd/prtspool/$env{'user.name'}_$env{'user.domain'}_printout.due";
        if (-e $duefile) {
    my $temp_file = Apache::File->new('>>'.$duefile);
    print $temp_file "1969\n";
        }
        $student_counter++;
        if ($split_on_sections) {
    my $this_section = (split(/:/,$person))[2];
    if ($this_section ne $last_section) {
        $i++;
        $last_section = $this_section;
    }
        } else {
    $i=int($student_counter/$helper->{'VARS'}{'NUMBER_TO_PRINT'});
        }
        my ($output,$fullname, $printed)=&print_resources($r,$helper,
        $person,$type,
        \%moreenv,\@master_seq,
        $flag_latex_header_remove,
        $LaTeXwidth);
        $resources_printed .= ":";
        $print_array[$i].=$output;
        $student_names[$i].=$person.':'.$fullname.'_END_';
        &Apache::lonhtmlcommon::Increment_PrgWin($r,\%prog_state,&mt('last student').' '.$fullname);
        $flag_latex_header_remove = 'YES';
        if (&Apache::loncommon::connection_aborted($r)) { last; }
    }
    &Apache::lonhtmlcommon::Close_PrgWin($r,\%prog_state);
    $result .= $print_array[0].'  \end{document}';
        } elsif (($helper->{'VARS'}->{'PRINT_TYPE'} eq 'problems_for_anon')     ||
         ($helper->{'VARS'}->{'PRINT_TYPE'} eq 'resources_for_anon')  ) { 
    my $cdom =$env{'course.'.$env{'request.course.id'}.'.domain'};
    my $cnum =$env{'course.'.$env{'request.course.id'}.'.num'};
    my $num_todo=$helper->{'VARS'}->{'NUMBER_TO_PRINT_TOTAL'};
    my $code_name=$helper->{'VARS'}->{'ANON_CODE_STORAGE_NAME'};
    my $old_name=$helper->{'VARS'}->{'REUSE_OLD_CODES'};
    my $single_code = $helper->{'VARS'}->{'SINGLE_CODE'};
    my $selected_code = $helper->{'VARS'}->{'CODE_SELECTED_FROM_LIST'};
   
    my $code_option=$helper->{'VARS'}->{'CODE_OPTION'};
    open(FH,$Apache::lonnet::perlvar{'lonTabDir'}.'/scantronformat.tab');
    my ($code_type,$code_length)=('letter',6);
    foreach my $line (<FH>) {
        my ($name,$type,$length) = (split(/:/,$line))[0,2,4];
        if ($name eq $code_option) {
    $code_length=$length;
    if ($type eq 'number') { $code_type = 'number'; }
        }
    }
    my %moreenv = ('textwidth' => &get_textwidth($helper,$LaTeXwidth));
    $moreenv{'problem_split'}    = $parmhash{'problem_stream_switch'};
            $moreenv{'instructor_comments'}='hide';
    my $seed=time+($$<<16)+($$);
    my @allcodes;
    if ($old_name) {
        my %result=&Apache::lonnet::get('CODEs',
        [$old_name,"type\0$old_name"],
        $cdom,$cnum);
        $code_type=$result{"type\0$old_name"};
        @allcodes=split(',',$result{$old_name});
        $num_todo=scalar(@allcodes);
    } elsif ($selected_code) { # Selection value is always numeric.
        $num_todo = 1;
        @allcodes = ($selected_code);
    } elsif ($single_code) {
   
        $num_todo    = 1; # Unconditionally one code to do.
        # If an alpha code have to convert to numbers so it can be
        # converted back to letters again :-)
        #
        if ($code_type ne 'number') {
    $single_code = &letters_to_num($single_code);
        }
        @allcodes = ($single_code);
    } else {
        my %allcodes;
        srand($seed);
        for (my $i=0;$i<$num_todo;$i++) {
    $moreenv{'CODE'}=&get_CODE(\%allcodes,$i,$seed,$code_length,
       $code_type);
        }
        if ($code_name) {
    &Apache::lonnet::put('CODEs',
         {
    $code_name =>join(',',keys(%allcodes)),
    "type\0$code_name" => $code_type
         },
         $cdom,$cnum);
        }
        @allcodes=keys(%allcodes);
    }
    my @master_seq=split /\|\|\|/, $helper->{'VARS'}->{'RESOURCES'};
    my ($type) = split(/_/,$helper->{'VARS'}->{'PRINT_TYPE'});
    &adjust_number_to_print($helper);
    my $number_per_page=$helper->{'VARS'}->{'NUMBER_TO_PRINT'};
    if ($number_per_page eq '0' || $number_per_page eq 'all') {
        $number_per_page=$num_todo;
    }
    my $flag_latex_header_remove = 'NO'; 
    my %prog_state=&Apache::lonhtmlcommon::Create_PrgWin($r,'Print Status','Class Print Status',$num_todo,'inline','75');
    my $count=0;
    foreach my $code (sort(@allcodes)) {
        my $file_num=int($count/$number_per_page);
        if ($code_type eq 'number') { 
    $moreenv{'CODE'}=$code;
        } else {
    $moreenv{'CODE'}=&num_to_letters($code);
        }
        my ($output,$fullname, $printed)=
    &print_resources($r,$helper,'anonymous',$type,\%moreenv,
     \@master_seq,$flag_latex_header_remove,
     $LaTeXwidth);
        $resources_printed .= ":";
        $print_array[$file_num].=$output;
        &Apache::lonhtmlcommon::Increment_PrgWin($r,\%prog_state,
          &mt('last assignment').' '.$fullname);
        $flag_latex_header_remove = 'YES';
        $count++;
        if (&Apache::loncommon::connection_aborted($r)) { last; }
    }
    &Apache::lonhtmlcommon::Close_PrgWin($r,\%prog_state);
    $result .= $print_array[0].'  \end{document}';
        } elsif ($helper->{'VARS'}->{'PRINT_TYPE'} eq 'problems_from_directory') {      
     #prints selected problems from the subdirectory       #prints selected problems from the subdirectory 
  $selectionmade = 6;   $selectionmade = 6;
         my @list_of_files = ();          my @list_of_files=split /\|\|\|/, $helper->{'VARS'}->{'FILES'};
  for (my $i=0; $i<$ENV{'form.numberofproblems'};$i++) {   @list_of_files=sort @list_of_files;
     if ($ENV{'form.whattoprint'.$i}=~/^\//) {   my $flag_latex_header_remove = 'NO'; 
  push @list_of_files,$ENV{'form.whattoprint'.$i};   my $rndseed=time;
     }   if ($helper->{'VARS'}->{'curseed'}) {
       $rndseed=$helper->{'VARS'}->{'curseed'};
  }   }
  for (my $i=0;$i<=$#list_of_files;$i++) {   for (my $i=0;$i<=$#list_of_files;$i++) {
     my $urlp = $list_of_files[$i];      my $urlp = $list_of_files[$i];
       $urlp=~s|//|/|;
     if ($urlp=~/\//) {      if ($urlp=~/\//) {
  my %moreenv;   $form{'problem_split'}=$parmhash{'problem_stream_switch'};
  $moreenv{'form.grade_target'}='tex';   $form{'rndseed'}=$rndseed;
  &Apache::lonnet::appenv(%moreenv);   if ($urlp =~ m|/home/([^/]+)/public_html|) {
  if ($ENV{'request.role'}=~m/^au\./ or $ENV{'request.role'}=~m/^ca\./) {       $urlp =~ s|/home/([^/]*)/public_html|/~$1|;
     $urlp =~ s/\/home\/([^\/]*)\/public_html/\/~$1/;    } else {
       $urlp =~ s|^$Apache::lonnet::perlvar{'lonDocRoot'}||;
    }
    $resources_printed .= $urlp.':';
    my $texversion=&Apache::lonnet::ssi($urlp,%form);
    if(($helper->{'VARS'}->{'ANSWER_TYPE'} eq 'no') ||
      ($helper->{'VARS'}->{'ANSWER_TYPE'} eq 'only')) {
       #  Don't permanently pervert %form:
       my %answerform = %form;
       $answerform{'grade_target'}='answer';
       $answerform{'answer_output_mode'}='tex';
       $answerform{'latex_type'}=$helper->{'VARS'}->{'LATEX_TYPE'};
       $answerform{'rndseed'}=$rndseed;
       $resources_printed .= $urlp.':';
       my $answer=&Apache::lonnet::ssi($urlp,%answerform);
       if ($helper->{'VARS'}->{'ANSWER_TYPE'} eq 'no') {
    $texversion=~s/(\\keephidden{ENDOFPROBLEM})/$answer$1/;
       } else {
    $texversion=&print_latex_header($helper->{'VARS'}->{'LATEX_TYPE'});
    if ($helper->{'VARS'}->{'construction'} ne '1') {
       $texversion.='\vskip 0 mm \noindent ';
       $texversion.=&path_to_problem ($urlp,$LaTeXwidth);
    } else {
       $texversion.='\vskip 0 mm \noindent\textbf{Prints from construction space - there is no title.}\vskip 0 mm ';
       my $URLpath=$urlp;
       $URLpath=~s/~([^\/]+)/public_html\/$1\/$1/;
       $texversion.=&path_to_problem ($URLpath,$LaTeXwidth);
    }
    $texversion.='\vskip 1 mm '.$answer.'\end{document}';
       }
    }
                   #this chunck is responsible for printing the path to problem
    my $newurlp=$urlp;
    if ($newurlp=~/~/) {$newurlp=~s|\/~([^\/]+)\/|\/home\/$1\/public_html\/|;}
    $newurlp=&path_to_problem($newurlp,$LaTeXwidth);
    $texversion =~ s/(\\begin{minipage}{\\textwidth})/$1 $newurlp/;
    if ($flag_latex_header_remove ne 'NO') {
       $texversion = &latex_header_footer_remove($texversion);
    } else {
       $texversion =~ s/\\end{document}//;
    }
    if ($helper->{'VARS'}->{'TABLE_INDEX'} eq 'yes') {
       $texversion=&IndexCreation($texversion,$urlp);
    }
    if ($helper->{'VARS'}->{'CONSTR_RESOURSE_URL'} eq 'yes') {
       $texversion=~s/(\\addcontentsline\{toc\}\{subsection\}\{[^\}]*\})/$1 URL: \\verb|$urlp| \\strut\\\\\\strut /;
       
  }   }
  my $texversion=&Apache::lonnet::ssi($urlp);  
  &Apache::lonnet::delenv('form.grade_target');  
  $texversion =~ s/(\\begin{document})/$1 {\\tiny\\begin{verbatim}$urlp\\end{verbatim}}/;  
  $result .= $texversion;   $result .= $texversion;
     }         }
       $flag_latex_header_remove = 'YES';  
  }   }
  $result = &additional_cleanup($result);         if ($helper->{VARS}->{'construction'} eq '1') {$result=~s/(\\typeout)/ RANDOM SEED IS $rndseed $1/;}
    $result .= '\end{document}';      
     }      }
 #-- corrections for the different page formats  #-------------------------------------------------------- corrections for the different page formats
     if ($layout eq 'CBI' and $numberofcolumns eq '1') {      $result = &page_format_transformation($papersize,$laystyle,$numberofcolumns,$helper->{'VARS'}->{'PRINT_TYPE'},$result,$helper->{VARS}->{'assignment'},$helper->{'VARS'}->{'TABLE_CONTENTS'},$helper->{'VARS'}->{'TABLE_INDEX'},$selectionmade);
  $result =~ s/\\begin{document}/\\setlength{\\oddsidemargin}{-40pt}\\setlength{\\evensidemargin}{-60pt}\\setlength{\\topmargin}{200pt}\\setlength{\\textwidth}{4\.4in}\\setlength{\\textheight}{6\.8in}\\setlength{\\parindent}{20pt}\\setlength{\\marginparwidth}{90pt}\\setlength{\\textfloatsep}{8pt plus 2\.0pt minus 4\.0pt} \\begin{document}/;      $result = &latex_corrections($number_of_columns,$result,$selectionmade,
  $result =~ s/\$number_of_columns/$number_of_columns/g;   $helper->{'VARS'}->{'ANSWER_TYPE'});
         $laystyle = 'album';      #if ($numberofcolumns == 1) {
     } elsif ($layout eq 'CBI' and $numberofcolumns eq '2') {   $result =~ s/\\textwidth\s*=\s*-?\d*\.?\d*\s*(cm|mm|in)/\\textwidth= $helper->{'VARS'}->{'pagesize.width'} $helper->{'VARS'}->{'pagesize.widthunit'} /;
  $result =~ s/\\begin{document}/\\setlength{\\oddsidemargin}{-40pt}\\setlength{\\evensidemargin}{-60pt}\\setlength{\\topmargin}{200pt}\\setlength{\\textwidth}{4\.4in}\\setlength{\\textheight}{6\.8in}\\setlength{\\parindent}{20pt}\\setlength{\\marginparwidth}{90pt}\\setlength{\\textfloatsep}{8pt plus 2\.0pt minus 4\.0pt} \\begin{document}/;   $result =~ s/\\textheight\s*=?\s*-?\d*\.?\d*\s*(cm|mm|in)/\\textheight $helper->{'VARS'}->{'pagesize.height'} $helper->{'VARS'}->{'pagesize.heightunit'} /;
  $result =~ s/\$number_of_columns/$number_of_columns/g;   $result =~ s/\\evensidemargin\s*=\s*-?\d*\.?\d*\s*(cm|mm|in)/\\evensidemargin= $helper->{'VARS'}->{'pagesize.lmargin'} $helper->{'VARS'}->{'pagesize.lmarginunit'} /;
         $laystyle = 'album';   $result =~ s/\\oddsidemargin\s*=\s*-?\d*\.?\d*\s*(cm|mm|in)/\\oddsidemargin= $helper->{'VARS'}->{'pagesize.lmargin'} $helper->{'VARS'}->{'pagesize.lmarginunit'} /;
     } elsif ($layout eq 'CAPA') {      #}
         my $courseidinfo = $ENV{'request.role'};  
         $_ = $courseidinfo;  #-- writing .tex file in prtspool 
         m/.*\/(.*)/;      my $temp_file;
         $courseidinfo = $ENV{'course.physnet_'.$1.'.description'};      my $identifier = &Apache::loncommon::get_cgi_id();
  $result =~ s/\\documentclass\[letterpaper\]{article}/\\documentclass{article}/;      my $filename = "/home/httpd/prtspool/$env{'user.name'}_$env{'user.domain'}_printout_$identifier.tex";
  if ($choice ne 'All class print') {       if (!($#print_array>0)) { 
     $result =~ s/\\begin{document}/\\textheight 25\.9cm\\oddsidemargin = -0\.57in\\evensidemargin = -0\.57in\\textwidth= 9cm\\newlength{\\minipagewidth}\\setlength{\\minipagewidth}{\\textwidth\/$number_of_columns-0\.2cm}\\renewcommand{\\ref}{\\keephidden\}\\begin{document}\\voffset=-1\.8cm\\setcounter{page}{1}\\parbox{\\minipagewidth}{\\noindent\\fbox{\\textbf{$ENV{'environment.firstname'} $ENV{'environment.lastname'}}}\\hskip 1\.4in $courseidinfo} \\vskip 5 mm /;   unless ($temp_file = Apache::File->new('>'.$filename)) {
         } else {      $r->log_error("Couldn't open $filename for output $!");
     $result =~ s/\\begin{document}/\\textheight 25\.9cm\\oddsidemargin = -0\.57in\\evensidemargin = -0\.57in\\textwidth= 9cm\\newlength{\\minipagewidth}\\setlength{\\minipagewidth}{\\textwidth\/$number_of_columns-0\.2cm}\\renewcommand{\\ref}{\\keephidden\}\\begin{document}\\voffset=-1\.8cm\\setcounter{page}{1}  \\vskip 5 mm /;      return SERVER_ERROR; 
  }   }
  $result =~ s/\\includegraphics{/\\includegraphics\[width=9\.0 cm\]{/g;   print $temp_file $result;
 # $result =~ s/\\includegraphics{/\\includegraphics\[width=\\textwidth\]{/g;   my $begin=index($result,'\begin{document}',0);
 # $result =~ s/(\\end{document})/\\newline\\noindent\\makebox\[9.0cm\]\[b\]{\\hrulefill}\\newline\\noindent\\tiny Dept\. of Physics and Astronomy, MSU\\makebox\[1.5cm\]\[b\]{\\hfill}LON-CAPA\\copyright MSU GNU\/GPL $1/;   my $inc=substr($result,0,$begin+16);
  $result =~ s/(\\end{document})/\\newline\\noindent\\makebox\[\\textwidth\/$number_of_columns\]\[b\]{\\hrulefill}\\newline\\noindent\\tiny \\makebox\[1.5cm\]\[b\]{\\hfill}LON-CAPA\\copyright Michigan State University Board of Trustees $1/;      } else {
 #        $result =~ s/(\\end{longtable}\s*)(\\newline\\noindent\\makebox\[9\.0cm\]\[b\]{\\hrulefill})/$2$1/g;   my $begin=index($result,'\begin{document}',0);
         $result =~ s/(\\end{longtable}\s*)(\\newline\\noindent\\makebox\[\\textwidth\/$number_of_columns\]\[b\]{\\hrulefill})/$2$1/g;   my $inc=substr($result,0,$begin+16);
         $result =~ s/(\\end{longtable}\s*)\\newline/$1/g;          for (my $i=0;$i<=$#print_array;$i++) {
  $result =~ s/\$number_of_columns/$number_of_columns/g;      if ($i==0) {
     }   $print_array[$i]=$result;
     #changes page's parameters for the one column output       } else {
     if ($ENV{'form.numberofcolumns'} == 1) {   $print_array[$i].='\end{document}';
  $result =~ s/\\textwidth= 9cm/\\textwidth= $ENV{'form.width'}/;   $print_array[$i] = 
  $result =~ s/\\textheight 25\.9cm/\\textheight $ENV{'form.height'}/;      &latex_corrections($number_of_columns,$print_array[$i],
  $result =~ s/\\evensidemargin = -0\.57in/\\evensidemargin= $ENV{'form.leftmargin'}/;         $selectionmade, 
  $result =~ s/\\oddsidemargin = -0\.57in/\\oddsidemargin= $ENV{'form.leftmargin'}/;         $helper->{'VARS'}->{'ANSWER_TYPE'});
   
    my $anobegin=index($print_array[$i],'\setcounter{page}',0);
    substr($print_array[$i],0,$anobegin)='';
    $print_array[$i]=$inc.$print_array[$i];
       }
       my $temp_file;
       my $newfilename=$filename;
       my $num=$i+1;
       $newfilename =~s/\.tex$//; 
       $newfilename=sprintf("%s_%03d.tex",$newfilename, $num);
       unless ($temp_file = Apache::File->new('>'.$newfilename)) {
    $r->log_error("Couldn't open $newfilename for output $!");
    return SERVER_ERROR; 
       }
       print $temp_file $print_array[$i];
    }
     }      }
 #-- LaTeX corrections           my $student_names='';
     my $first_comment = index($result,'<!--',0);      if ($#print_array>0) {
     while ($first_comment != -1) {   for (my $i=0;$i<=$#print_array;$i++) {
  my $end_comment = index($result,'-->',$first_comment);      $student_names.=$student_names[$i].'_ENDPERSON_';
  substr($result,$first_comment,$end_comment-$first_comment+3) = '';   }
  $first_comment = index($result,'<!--',$first_comment);      } else {
    if ($#student_names>-1) {
       $student_names=$student_names[0].'_ENDPERSON_';
    } else {
       my $fullname = &get_name($env{'user.name'},$env{'user.domain'});
       $student_names=join(':',$env{'user.name'},$env{'user.domain'},
    $env{'request.course.sec'},$fullname).
       '_ENDPERSON_'.'_END_';
    }
     }      }
     $result =~ s/^\s+$//gm; #remove empty lines  
     $result =~ s/(\s)+/$1/g; #removes more than one empty space      my $URLback=''; #link to original document
     $result =~ s/\\\\\s*\\vskip/\\vskip/gm;      if ($helper->{'VARS'}->{'construction'} ne '1') {
     $result =~ s/\\\\\s*\\noindent\s*(\\\\)+/\\\\\\noindent /g;   #prints published resource
     $result =~ s/{\\par }\s*\\\\/\\\\/gm;   $URLback=&escape('/adm/flip?postdata=return:');
  $result =~ s/\\\\\s+\[/ \[/g;      } else {
     $result =~ s/&#952;/\$\\theta\$/g; #converts theta from html into tex   #prints resource from the construction space
     $result =~ s/\b__+\b/\\makebox\[1 cm\]\[b\]{\\hrulefill}/g;   $URLback='/'.$helper->{'VARS'}->{'filename'};
     #conversion of html characters to LaTeX equivalents   if ($URLback=~/([^?]+)/) {
     if ($result =~ m/&(\w+|#\d+);/) {      $URLback=$1;
  $result = &character_chart($result);      $URLback=~s|^/~|/priv/|;
    }
     }      }
     $result =~ s/(\\end{tabular})\s*\\vskip 0 mm/$1/g;      # logic for now is too complex to trace if this has been defined
     $result =~ s/(\\begin{enumerate})\s*\\noindent/$1/g;      #  yet.
 #-- writing .tex file in prtspool       my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
     my $temp_file;      my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
     my $filename = "/home/httpd/prtspool/$ENV{'user.name'}_$ENV{'user.domain'}_printout_".time."_".rand(10000000).".tex";      &Apache::lonnet::appenv('cgi.'.$identifier.'.file'   => $filename,
     unless ($temp_file = Apache::File->new('>'.$filename)) {                              'cgi.'.$identifier.'.layout'  => $laystyle,
  $r->log_error("Couldn't open $filename for output $!");                              'cgi.'.$identifier.'.numcol'  => $numberofcolumns,
  return SERVER_ERROR;       'cgi.'.$identifier.'.paper'  => $papersize,
     }                               'cgi.'.$identifier.'.selection' => $selectionmade,
     print $temp_file $result;      'cgi.'.$identifier.'.tableofcontents' => $helper->{'VARS'}->{'TABLE_CONTENTS'},
 $r->print(<<FINALEND);      'cgi.'.$identifier.'.tableofindex' => $helper->{'VARS'}->{'TABLE_INDEX'},
 <meta http-equiv="Refresh" content="0; url=/cgi-bin/printout.pl?$filename&$laystyle&$numberofcolumns&$selectionmade">      'cgi.'.$identifier.'.role' => $perm{'pav'},
 </body>                              'cgi.'.$identifier.'.numberoffiles' => $#print_array,
 </html>                              'cgi.'.$identifier.'.studentnames' => $student_names,
                               'cgi.'.$identifier.'.backref' => $URLback,);
       &Apache::lonnet::appenv("cgi.$identifier.user"    => $env{'user.name'},
       "cgi.$identifier.domain"  => $env{'user.domain'},
       "cgi.$identifier.courseid" => $cnum, 
       "cgi.$identifier.coursedom" => $cdom, 
       "cgi.$identifier.resources" => $resources_printed);
   
       my $end_page = &Apache::loncommon::end_page();
       $r->print(<<FINALEND);
   <br />
   <meta http-equiv="Refresh" content="0; url=/cgi-bin/printout.pl?$identifier" />
   <a href="/cgi-bin/printout.pl?$identifier">Continue</a>
   $end_page
 FINALEND  FINALEND
 }  }
   
 sub character_chart {  
     my $result = shift;  sub get_CODE {
     $result =~ s/&#0?0?7;//g;      my ($all_codes,$num,$seed,$size,$type)=@_;
     $result =~ s/&#0?0?9;//g;      my $max='1'.'0'x$size;
     $result =~ s/&#0?10;//g;      my $newcode;
     $result =~ s/&#0?13;//g;      while(1) {
     $result =~ s/&#0?32;/ /g;   $newcode=sprintf("%0".$size."d",int(rand($max)));
     $result =~ s/&#0?33;/!/g;   if (!exists($$all_codes{$newcode})) {
     $result =~ s/&#0?34;/"/g;      $$all_codes{$newcode}=1;
     $result =~ s/&quot;/"/g;       if ($type eq 'number' ) {
     $result =~ s/&#0?35;/\\#/g;   return $newcode;
 #    $result =~ s/&#0?36;/\\\$/g;      } else {
     $result =~ s/&#0?37;/\\%/g;    return &num_to_letters($newcode);
     $result =~ s/&#0?38;/\\&/g;       }
     $result =~ s/&amp;/\\&/g;   }
     $result =~ s/&#0?39;/'/g;      }
     $result =~ s/&#0?40;/(/g;  
     $result =~ s/&#0?41;/)/g;  
     $result =~ s/&#0?42;/\*/g;  
     $result =~ s/&#0?43;/\+/g;  
     $result =~ s/&#0?44;/,/g;  
     $result =~ s/&#0?45;/-/g;  
     $result =~ s/&#0?46;/\./g;  
     $result =~ s/&#0?47;/\//g;  
     $result =~ s/&#0?48;/0/g;  
     $result =~ s/&#0?49;/1/g;  
     $result =~ s/&#0?50;/2/g;  
     $result =~ s/&#0?51;/3/g;  
     $result =~ s/&#0?52;/4/g;  
     $result =~ s/&#0?53;/5/g;  
     $result =~ s/&#0?54;/6/g;  
     $result =~ s/&#0?55;/7/g;  
     $result =~ s/&#0?56;/8/g;  
     $result =~ s/&#0?57;/9/g;  
     $result =~ s/&#0?58;/:/g;  
     $result =~ s/&#0?59;/;/g;  
     $result =~ s/&#0?60;/\$<\$/g;  
     $result =~ s/&lt;/\$<\$/g;  
     $result =~ s/&#0?61;/\$=\$/g;  
     $result =~ s/&#0?62;/\$>\$/g;  
     $result =~ s/&gt;/\$>\$/g;  
     $result =~ s/&#0?63;/?/g;  
 #    $result =~ s/&#0?64;//g;  
     $result =~ s/&#0?65;/A/g;  
     $result =~ s/&#0?66;/B/g;  
     $result =~ s/&#0?67;/C/g;  
     $result =~ s/&#0?68;/D/g;  
     $result =~ s/&#0?69;/E/g;  
     $result =~ s/&#0?70;/F/g;  
     $result =~ s/&#0?71;/G/g;  
     $result =~ s/&#0?72;/H/g;  
     $result =~ s/&#0?73;/I/g;  
     $result =~ s/&#0?74;/J/g;  
     $result =~ s/&#0?75;/K/g;  
     $result =~ s/&#0?76;/L/g;  
     $result =~ s/&#0?77;/M/g;  
     $result =~ s/&#0?78;/N/g;  
     $result =~ s/&#0?79;/O/g;  
     $result =~ s/&#0?80;/P/g;  
     $result =~ s/&#0?81;/Q/g;  
     $result =~ s/&#0?82;/R/g;  
     $result =~ s/&#0?83;/S/g;  
     $result =~ s/&#0?84;/T/g;  
     $result =~ s/&#0?85;/U/g;  
     $result =~ s/&#0?86;/V/g;  
     $result =~ s/&#0?87;/W/g;  
     $result =~ s/&#0?88;/X/g;  
     $result =~ s/&#0?89;/Y/g;  
     $result =~ s/&#0?90;/Z/g;  
     $result =~ s/&#0?91;/[/g;  
     $result =~ s/&#0?92;/\\/g;  
     $result =~ s/&#0?93;/]/g;  
 #    $result =~ s/&#0?94;//g;  
 #    $result =~ s/&#0?95;//g;  
     $result =~ s/&#0?96;/`/g;  
     $result =~ s/&#0?97;/a/g;  
     $result =~ s/&#0?98;/b/g;  
     $result =~ s/&#0?99;/c/g;  
     $result =~ s/&#100;/d/g;  
     $result =~ s/&#101;/e/g;  
     $result =~ s/&#102;/f/g;  
     $result =~ s/&#103;/g/g;  
     $result =~ s/&#104;/h/g;  
     $result =~ s/&#105;/i/g;  
     $result =~ s/&#106;/j/g;  
     $result =~ s/&#107;/k/g;  
     $result =~ s/&#108;/l/g;  
     $result =~ s/&#109;/m/g;  
     $result =~ s/&#110;/n/g;  
     $result =~ s/&#111;/o/g;  
     $result =~ s/&#112;/p/g;  
     $result =~ s/&#113;/q/g;  
     $result =~ s/&#114;/r/g;  
     $result =~ s/&#115;/s/g;  
     $result =~ s/&#116;/t/g;  
     $result =~ s/&#117;/u/g;  
     $result =~ s/&#118;/v/g;  
     $result =~ s/&#119;/w/g;  
     $result =~ s/&#120;/x/g;  
     $result =~ s/&#121;/y/g;  
     $result =~ s/&#122;/z/g;  
     $result =~ s/&#123;/\\{/g;  
     $result =~ s/&#124;/\|/g;  
     $result =~ s/&#125;/\\}/g;  
     $result =~ s/&#126;/\~/g;  
     $result =~ s/&#130;/,/g;  
 #    $result =~ s/&#131;//g;  
     $result =~ s/&#132;/''/g;  
     $result =~ s/&#133;/\$\\ldots\$/g;  
     $result =~ s/&#134;/\$\\dagger\$/g;  
     $result =~ s/&#135;/\$\\ddagger\$/g;  
 #    $result =~ s/&#136;//g;  
 #    $result =~ s/&#137;//g;  
 #    $result =~ s/&#138;//g;  
     $result =~ s/&#139;/\$<\$/g;  
 #    $result =~ s/&#140;//g;  
     $result =~ s/&#145;/`/g;  
     $result =~ s/&#146;/'/g;  
     $result =~ s/&#147;/``/g;  
     $result =~ s/&#148;/''/g;  
     $result =~ s/&#149;/\$\\bullet\$/g;  
 #    $result =~ s/&#150;//g;  
 #    $result =~ s/&#151;//g;  
     $result =~ s/&#152;/~/g;  
 #    $result =~ s/&#153;//g;  
 #    $result =~ s/&#154;//g;  
     $result =~ s/&#155;/\$>\$/g;  
     $result =~ s/&#156;/\\{\\oe\\}/g;  
     $result =~ s/&#159;/\\"\\{Y\\}/g;  
     $result =~ s/&#160;//g;  
     $result =~ s/&nbsp;//g;  
     $result =~ s/&#161;/!`/g;  
     $result =~ s/&iexcl;/!`/g; #`  
 #    $result =~ s/&#162;//g;  
 #    $result =~ s/&cent;//g;  
     $result =~ s/&#163;/\\pounds/g;   
     $result =~ s/&pound;/\\pounds/g;  
 #    $result =~ s/&#164;//g;  
 #    $result =~ s/&curren;//g;  
 #    $result =~ s/&#165;//g;  
 #    $result =~ s/&yen;//g;  
 #    $result =~ s/&#166;//g;  
 #    $result =~ s/&brvbar;//g;  
 #    $result =~ s/&#167;//g;  
 #    $result =~ s/&sect;//g;  
 #    $result =~ s/&#168;//g;  
 #    $result =~ s/&uml;//g;  
     $result =~ s/&#169;/\\copyright/g;  
     $result =~ s/&copy;/\\copyright/g;  
 #    $result =~ s/&#170;//g;  
 #    $result =~ s/&ordf;//g;  
 #    $result =~ s/&#171;//g;  
 #    $result =~ s/&laquo;//g;  
     $result =~ s/&#172;/\$\\neg\$/g;  
     $result =~ s/&not;/\$\\neg\$/g;  
 #    $result =~ s/&#173;//g;  
 #    $result =~ s/&shy;//g;  
 #    $result =~ s/&#174;//g;  
 #    $result =~ s/&reg;//g;  
 #    $result =~ s/&#175;//g;  
 #    $result =~ s/&macr;//g;  
     $result =~ s/&#176;/\$^{\\circ}\$/g;  
     $result =~ s/&deg;/\$^{\\circ}\$/g;  
     $result =~ s/&#177;/\$\\pm\$/g;  
     $result =~ s/&plusmn;/\$\\pm\$/g;  
     $result =~ s/&#178;/\$^2\$/g;  
     $result =~ s/&sup2;/\$^2\$/g;  
     $result =~ s/&#179;/\$^3\$/g;  
     $result =~ s/&sup3;/\$^3\$/g;  
 #    $result =~ s/&#180;//g;  
 #    $result =~ s/&acute;//g;  
     $result =~ s/&#181;/\$\\mu\$/g;  
     $result =~ s/&micro;/\$\\mu\$/g;  
     $result =~ s/&#182;/\\P/g;  
     $result =~ s/&para;/\\P/g;  
     $result =~ s/&#183;/\$\\cdot\$/g;  
     $result =~ s/&middot;/\$\\cdot\$/g;  
 #    $result =~ s/&#184;//g;  
 #    $result =~ s/&cedil;//g;  
     $result =~ s/&#185;/\$^1\$/g;  
     $result =~ s/&sup1;/\$^1\$/g;  
 #    $result =~ s/&#186;//g;  
 #    $result =~ s/&ordm;//g;  
 #    $result =~ s/&#187;//g;  
 #    $result =~ s/&raquo;//g;  
 #    $result =~ s/&#188;//g;  
 #    $result =~ s/&frac14;//g;  
 #    $result =~ s/&#189;//g;  
 #    $result =~ s/&frac12;//g;  
 #    $result =~ s/&#190;//g;  
 #    $result =~ s/&frac34;//g;  
     $result =~ s/&#191;/?`/g;  
     $result =~ s/&iquest;/?`/g;   
     $result =~ s/&#192;/\\`{A}/g;  
     $result =~ s/&Agrave;/\\`{A}/g;   
     $result =~ s/&#193;/\\'{A}/g;   
     $result =~ s/&Aacute;/\\'{A}/g;   
     $result =~ s/&#194;/\\^{A}/g;  
     $result =~ s/&Acirc;/\\^{A}/g;  
     $result =~ s/&#195;/\\~{A}/g;  
     $result =~ s/&Atilde;/\\~{A}/g;  
     $result =~ s/&#196;/\\"{A}/g;   
     $result =~ s/&Auml;/\\"{A}/g;   
     $result =~ s/&#197;/{\\AA}/g;  
     $result =~ s/&Aring;/{\\AA}/g;  
     $result =~ s/&#198;/{\\AE}/g;  
     $result =~ s/&AElig;/{\\AE}/g;  
 #    $result =~ s/&#199;//g;  
 #    $result =~ s/&Ccedil;//g;  
     $result =~ s/&#200;/\\`{E}/g;  
     $result =~ s/&Egrave;/\\`{E}/g;  
     $result =~ s/&#201;/\\'{E}/g;  
     $result =~ s/&Eacute;/\\'{E}/g;  
     $result =~ s/&#202;/\\^{E}/g;  
     $result =~ s/&Ecirc;/\\^{E}/g;  
     $result =~ s/&#203;/\\`{E}/g;  
     $result =~ s/&Euml;/\\`{E}/g;  
     $result =~ s/&#204;/\\`{I}/g;  
     $result =~ s/&Igrave;/\\`{I}/g;   
     $result =~ s/&#205;/\\'{I}/g;   
     $result =~ s/&Iacute;/\\'{I}/g;   
     $result =~ s/&#206;/\\^{I}/g;  
     $result =~ s/&Icirc;/\\^{I}/g;  
     $result =~ s/&#207;/\\"{I}/g;   
     $result =~ s/&Iuml;/\\"{I}/g;   
 #    $result =~ s/&#208;//g;  
 #    $result =~ s/&ETH;//g;  
     $result =~ s/&#209;/\\~{N}/g;  
     $result =~ s/&Ntilde;/\\~{N}/g;  
     $result =~ s/&#210;/\\`{O}/g;  
     $result =~ s/&Ograve;/\\`{O}/g;   
     $result =~ s/&#211;/\\'{O}/g;  
     $result =~ s/&Oacute;/\\'{O}/g;   
     $result =~ s/&#212;/\\^{O}/g;  
     $result =~ s/&Ocirc;/\\^{O}/g;  
     $result =~ s/&#213;/\\~{O}/g;  
     $result =~ s/&Otilde;/\\~{O}/g;  
     $result =~ s/&#214;/\\"{O}/g;  
     $result =~ s/&Ouml;/\\"{O}/g;   
     $result =~ s/&#215;/\$\\times\$/g;  
     $result =~ s/&times;/\$\\times\$/g;  
     $result =~ s/&#216;/{\\O}/g;  
     $result =~ s/&Oslash;/{\\O}/g;  
     $result =~ s/&#217;/\\`{U}/g;  
     $result =~ s/&Ugrave;/\\`{U}/g;  
     $result =~ s/&#218;/\\'{U}/g;  
     $result =~ s/&Uacute;/\\'{U}/g;  
     $result =~ s/&#219;/\\^{U}/g;  
     $result =~ s/&Ucirc;/\\^{U}/g;  
     $result =~ s/&#220;/\\"{U}/g;  
     $result =~ s/&Uuml;/\\"{U}/g;  
     $result =~ s/&#221;/\\'{Y}/g;  
     $result =~ s/&Yacute;/\\'{Y}/g;  
 #    $result =~ s/&#222;//g;  
 #    $result =~ s/&THORN;//g;  
 #    $result =~ s/&#223;//g;  
 #    $result =~ s/&szlig;//g;  
     $result =~ s/&#224;/\\`{a}/g;  
     $result =~ s/&agrave;/\\`{a}/g;  
     $result =~ s/&#225;/\\'{a}/g;  
     $result =~ s/&aacute;/\\'{a}/g;  
     $result =~ s/&#226;/\\^{a}/g;  
     $result =~ s/&acirc;/\\^{a}/g;  
     $result =~ s/&#227;/\\~{a}/g;  
     $result =~ s/&atilde;/\\~{a}/g;  
     $result =~ s/&#228;/\\"{a}/g;  
     $result =~ s/&auml;/\\"{a}/g;  
     $result =~ s/&#229;/{\\aa}/g;  
     $result =~ s/&aring;/{\\aa}/g;  
     $result =~ s/&#230;/{\\ae}/g;  
     $result =~ s/&aelig;/{\\ae}/g;  
 #    $result =~ s/&#231;//g;  
 #    $result =~ s/&ccedil;//g;  
     $result =~ s/&#232;/\\`{e}/g;  
     $result =~ s/&egrave;/\\`{e}/g;  
     $result =~ s/&#233;/\\'{e}/g;  
     $result =~ s/&eacute;/\\'{e}/g;  
     $result =~ s/&#234;/\\^{e}/g;  
     $result =~ s/&ecirc;/\\^{e}/g;  
     $result =~ s/&#235;/\\"{e}/g;  
     $result =~ s/&euml;/\\"{e}/g;  
     $result =~ s/&#236;/\\`{i}/g;  
     $result =~ s/&igrave;/\\`{i}/g;  
     $result =~ s/&#237;/\\'{i}/g;  
     $result =~ s/&iacute;/\\'{i}/g;  
     $result =~ s/&#238;/\\^{i}/g;  
     $result =~ s/&icirc;/\\^{i}/g;  
     $result =~ s/&#239;/\\"{i}/g;  
     $result =~ s/&iuml;/\\"{i}/g;  
 #    $result =~ s/&#240;//g;  
 #    $result =~ s/&eth;//g;  
     $result =~ s/&#241;/\\~{n}/g;  
     $result =~ s/&ntilde;/\\~{n}/g;  
     $result =~ s/&#242;/\\`{o}/g;  
     $result =~ s/&ograve;/\\`{o}/g;  
     $result =~ s/&#243;/\\'{o}/g;  
     $result =~ s/&oacute;/\\'{o}/g;  
     $result =~ s/&#244;/\\^{o}/g;  
     $result =~ s/&ocirc;/\\^{o}/g;  
     $result =~ s/&#245;/\\~{o}/g;  
     $result =~ s/&otilde;/\\~{o}/g;  
     $result =~ s/&#246;/\\"{o}/g;  
     $result =~ s/&ouml;/\\"{o}/g;  
     $result =~ s/&#247;/\$\\div\$/g;  
     $result =~ s/&divide;/\$\\div\$/g;  
     $result =~ s/&#248;/{\\o}/g;  
     $result =~ s/&oslash;/{\\o}/g;  
     $result =~ s/&#249;/\\`{u}/g;   
     $result =~ s/&ugrave;/\\`{u}/g;  
     $result =~ s/&#250;/\\'{u}/g;  
     $result =~ s/&uacute;/\\'{u}/g;  
     $result =~ s/&#251;/\\^{u}/g;  
     $result =~ s/&ucirc;/\\^{u}/g;  
     $result =~ s/&#252;/\\"{u}/g;  
     $result =~ s/&uuml;/\\"{u}/g;  
     $result =~ s/&#253;/\\'{y}/g;  
     $result =~ s/&yacute;/\\'{y}/g;  
 #    $result =~ s/&#254;//g;  
 #    $result =~ s/&thorn;//g;  
     $result =~ s/&#255;/\\"{y}/g;  
     $result =~ s/&yuml;/\\"{y}/g;  
     return $result;  
 }  }
   
   sub print_resources {
       my ($r,$helper,$person,$type,$moreenv,$master_seq,$remove_latex_header,
    $LaTeXwidth)=@_;
       my $current_output = ''; 
       my $printed = '';
       my ($username,$userdomain,$usersection) = split /:/,$person;
       my $fullname = &get_name($username,$userdomain);
       my $namepostfix = "\\\\"; # Both anon and not anon should get the same vspace.
       if ($person =~ 'anon') {
    $namepostfix .="Name: ";
    $fullname = "CODE - ".$moreenv->{'CODE'};
       }
       #  Fullname may have special latex characters that need \ prefixing:
       #
   
       my $i           = 0;
       #goes through all resources, checks if they are available for 
       #current student, and produces output   
   
       &Apache::lonxml::clear_problem_counter();
       my %page_breaks  = &get_page_breaks($helper);
       my $columns_in_format = (split(/\|/,$helper->{'VARS'}->{'FORMAT'}))[1];
       #
       #   end each student with a 
       #   Special that allows the post processor to even out the page
       #   counts later.  Nasty problem this... it would be really
       #   nice to put the special in as a postscript comment
       #   e.g. \special{ps:\ENDOFSTUDENTSTAMP}  unfortunately,
       #   The special gets passed the \ and dvips puts it in the output file
       #   so we will just rely on prntout.pl to strip  ENDOFSTUDENTSTAMP from the
       #   postscript.  Each ENDOFSTUDENTSTAMP will go on a line by itself.
       #
   
       foreach my $curresline (@{$master_seq})  {
    if (defined $page_breaks{$curresline}) {
       if($i != 0) {
    $current_output.= "\\newpage\n";
       }
    }
    $i++;
    if ( !($type eq 'problems' && 
          ($curresline!~ m/\.(problem|exam|quiz|assess|survey|form|library)$/)) ) {
       my ($map,$id,$res_url) = &Apache::lonnet::decode_symb($curresline);
       if (&Apache::lonnet::allowed('bre',$res_url)) {
    if ($res_url!~m|^ext/|
       && $res_url=~/\.(problem|exam|quiz|assess|survey|form|library|page|xml|html|htm|xhtml|xhtm)$/) {
       $printed .= $curresline.':';
   
       &Apache::lonxml::remember_problem_counter();    
   
       my $rendered = &Apache::loncommon::get_student_view($curresline,$username,$userdomain,$env{'request.course.id'},'tex',$moreenv);
   
       if(($helper->{'VARS'}->{'ANSWER_TYPE'} eq 'no') ||
          ($helper->{'VARS'}->{'ANSWER_TYPE'} eq 'only')) {
    #   Use a copy of the hash so we don't pervert it on future loop passes.
    my %answerenv = %{$moreenv};
    $answerenv{'answer_output_mode'}='tex';
    $answerenv{'latex_type'}=$helper->{'VARS'}->{'LATEX_TYPE'};
   
    &Apache::lonxml::restore_problem_counter();
   
    my $ansrendered = &Apache::loncommon::get_student_answers($curresline,$username,$userdomain,$env{'request.course.id'},%answerenv);
   
 #'"`   if ($helper->{'VARS'}->{'ANSWER_TYPE'} eq 'no') {
       $rendered=~s/(\\keephidden{ENDOFPROBLEM})/$ansrendered$1/;
    } else {
   
 sub additional_cleanup {      
     my $result = shift;      my $header =&print_latex_header($helper->{'VARS'}->{'LATEX_TYPE'});
     my $first_app = index($result,'\documentclass',0);      my $title = &Apache::lonnet::gettitle($curresline);
     $first_app = index($result,'\documentclass',$first_app+5);      $title = &Apache::lonxml::latex_special_symbols($title);
     while ($first_app != -1) {      my $body   ='\vskip 0 mm \noindent\textbf{'.$title.'}\vskip 0 mm ';
  my $second_app = index($result,'begin{document}',$first_app);      $body     .=&path_to_problem($res_url,$LaTeXwidth);
  $first_app = rindex($result,'\end{document}',$first_app);      $body     .='\vskip 1 mm '.$ansrendered;
  substr($result,$first_app,$second_app-$first_app+15) = '\vskip 3 mm';      $body     = &encapsulate_minipage($body);
  $first_app = index($result,'\documentclass',$first_app+5);      $rendered = $header.$body;
     }   }
     return $result;      }
 }      if ($remove_latex_header eq 'YES') {
 sub page_cleanup {   $rendered = &latex_header_footer_remove($rendered);
     my $result = shift;      } else {
     $_ = $result;   $rendered =~ s/\\end{document}//;
     m/\\end{document}(\d*)$/;      }
     my $number_of_columns = $1;      $current_output .= $rendered;    
     my $insert = '{';   } elsif ($res_url=~/\/(smppg|syllabus|aboutme|bulletinboard)$/) {
     for (my $id=1;$id<=$number_of_columns;$id++) { $insert .='l'; }      $printed .= $curresline.':';
     $insert .= '}';      my $rendered = &Apache::loncommon::get_student_view($curresline,$username,$userdomain,$env{'request.course.id'},'tex',$moreenv);
     $result =~ s/(\\begin{longtable})INSERTTHEHEADOFLONGTABLE/$1$insert/g;  
     $result =~ s/&\s*REMOVETHEHEADOFLONGTABLE\\\\/\\\\/g;      if ($remove_latex_header eq 'YES') {
     $result =~ s/(\\vskip\s*\d+\s*mm)/}\\\\\\parbox{\\minipagewidth}{/g;   $rendered = &latex_header_footer_remove($rendered);
     $result =~ s/\\parbox{\\minipagewidth}{}\s*\\\\\s*(\\parbox{\\minipagewidth})/$1/g;      } else {
     $result =~ s/\\parbox{\\minipagewidth}{\s*\\\\\\\\/\\parbox{\\minipagewidth}{/g;   $rendered =~ s/\\end{document}//;
     return $result,$number_of_columns;      }
 }      $current_output .= $rendered.'\vskip 0.5mm\noindent\makebox[\textwidth/$number_of_columns][b]{\hrulefill}\strut \vskip 0 mm \strut ';
   
 sub content_map {  
 #-- find a list of files to print  
     my $map_string = shift;  
     my @number_seq = ();  
     my @file_seq = ();  
     my $startlink = index($map_string,'<link',0);  
     my $endlink = index($map_string,'</link>',$startlink);  
     my $chunk = substr($map_string,$startlink,$endlink-$startlink+7);  
     $_ = $chunk;  
     m/from=\"(\d+)\"/;  
     push @number_seq,$1;  
     while ($startlink != -1) {  
  $endlink = index($map_string,'</link>',$startlink);  
  $chunk = substr($map_string,$startlink,$endlink-$startlink+7);  
  substr($map_string,$startlink,$endlink-$startlink+7) = '';  
  $_ = $chunk;  
         m/to=\"(\d+)\"/;  
  push @number_seq,$1;  
  $startlink = index($map_string,'from="'.$1.'"',0);  
  $startlink = rindex($map_string,'<link ',$startlink);  
     }  
     my $stalink = index($map_string,' to="'.$number_seq[0].'"',0);  
     while ($stalink != -1) {  
  $startlink = rindex($map_string,'<link ',$stalink);  
  $endlink = index($map_string,'</link>',$startlink);  
  $chunk = substr($map_string,$startlink,$endlink-$startlink+7);  
  substr($map_string,$startlink,$endlink-$startlink+7) = '';  
  $_ = $chunk;  
         m/from=\"(\d+)\"/;  
  unshift @number_seq,$1;  
  $stalink = index($map_string,' to="'.$number_seq[0].'"',0);  
     }  
     for (my $i=0;$i<=$#number_seq;$i++) {  
  $stalink = index($map_string,' id="'.$number_seq[$i].'"',0);  
         {      
     my $ahed1 = index($map_string,'src="',$stalink);  
     my $ahed2 = index($map_string,'</resource>',$stalink);  
     if ($ahed1 != -1) {  
  if ($ahed1 < $ahed2) {  
     $startlink = $ahed1;  
  } else {   } else {
     $startlink = rindex($map_string,'src="',$stalink);      my $rendered = &unsupported($res_url,$helper->{'VARS'}->{'LATEX_TYPE'},$curresline);
       if ($remove_latex_header ne 'NO') {
    $rendered = &latex_header_footer_remove($rendered);
       } else {
    $rendered =~ s/\\end{document}//;
       }
       $current_output .= $rendered;
  }   }
     } else {  
  $startlink = rindex($map_string,'src="',$stalink);  
     }      }
       $remove_latex_header = 'YES';
  }   }
  $startlink = index($map_string,'"',$startlink);   if (&Apache::loncommon::connection_aborted($r)) { last; }
  $endlink = index($map_string,'"',$startlink+1);  
  $chunk = substr($map_string,$startlink,$endlink-$startlink+1);  
  push @file_seq,$chunk;  
     }      }
     return @file_seq;      my $courseidinfo = &get_course();
 }      if (defined($courseidinfo)) { $courseidinfo=' - '.$courseidinfo }
       if ($usersection ne '') {$courseidinfo.=' - Sec. '.$usersection}
       my $currentassignment=&Apache::lonxml::latex_special_symbols($helper->{VARS}->{'assignment'},'header');
       my $header_line =
    &format_page_header($LaTeXwidth, $parmhash{'print_header_format'},
       $currentassignment, $courseidinfo, $fullname);
       my $header_start = ($columns_in_format == 1) ? '\lhead'
                                            : '\fancyhead[LO]';
       $header_line = $header_start.'{'.$header_line.'}';
   
       if ($current_output=~/\\documentclass/) {
    $current_output =~ s/\\begin{document}/\\setlength{\\topmargin}{1cm} \\begin{document}\\noindent\\parbox{\\minipagewidth}{\\noindent$header_line$namepostfix}\\vskip 5 mm /;
       } else {
    my $blankpages = 
       '\clearpage\strut\clearpage'x$helper->{'VARS'}->{'EMPTY_PAGES'};
       
    $current_output = '\strut\vspace*{-6 mm}\\newline'.
       &copyright_line().' \newpage '.$blankpages.$end_of_student.
       '\setcounter{page}{1}\noindent\parbox{\minipagewidth}{\noindent'.
       $header_line.$namepostfix.'} \vskip 5 mm '.$current_output;
       }
       #
       #  Close the student bracketing.
       #
       return ($current_output,$fullname, $printed);
   
   }
   
 sub handler {  sub handler {
   
     my $r = shift;      my $r = shift;
     $r->content_type('text/html');      
       &init_perm();
   
   
   
       my $helper = printHelper($r);
       if (!ref($helper)) {
    return $helper;
       }
      
   
       %parmhash=&Apache::lonnet::coursedescription($env{'request.course.id'});
    
   
   
   
       #  If a figure conversion queue file exists for this user.domain
       # we delete it since it can only be bad (if it were good, printout.pl
       # would have deleted it the last time around.
   
       my $conversion_queuefile = "/home/httpd/prtspool/$env{'user.name'}_$env{'user.domain'}_printout.dat";
       if(-e $conversion_queuefile) {
    unlink $conversion_queuefile;
       }
       &output_data($r,$helper,\%parmhash);
       return OK;
   } 
   
   use Apache::lonhelper;
   
   sub addMessage {
       my $text = shift;
       my $paramHash = Apache::lonhelper::getParamHash();
       $paramHash->{MESSAGE_TEXT} = $text;
       Apache::lonhelper::message->new();
   }
   
   
   
   sub init_perm {
       undef(%perm);
       $perm{'pav'}=&Apache::lonnet::allowed('pav',$env{'request.course.id'});
       if (!$perm{'pav'}) {
    $perm{'pav'}=&Apache::lonnet::allowed('pav',
     $env{'request.course.id'}.'/'.$env{'request.course.sec'});
       }
       $perm{'pfo'}=&Apache::lonnet::allowed('pfo',$env{'request.course.id'});
       if (!$perm{'pfo'}) {
    $perm{'pfo'}=&Apache::lonnet::allowed('pfo',
     $env{'request.course.id'}.'/'.$env{'request.course.sec'});
       }
   }
   
   sub printHelper {
       my $r = shift;
   
       if ($r->header_only) {
           if ($env{'browser.mathml'}) {
               &Apache::loncommon::content_type($r,'text/xml');
           } else {
               &Apache::loncommon::content_type($r,'text/html');
           }
           $r->send_http_header;
           return OK;
       }
   
       # Send header, nocache
       if ($env{'browser.mathml'}) {
           &Apache::loncommon::content_type($r,'text/xml');
       } else {
           &Apache::loncommon::content_type($r,'text/html');
       }
       &Apache::loncommon::no_cache($r);
     $r->send_http_header;      $r->send_http_header;
     $r->print(&Apache::loncommon::bodytag("Printing"));      $r->rflush();
   
 #-- start form      # Unfortunately, this helper is so complicated we have to
     &headerform($r);      # write it by hand
 #-- menu for output  
     unless  ($ENV{'form.phase'}) {      Apache::loncommon::get_unprocessed_cgi($ENV{QUERY_STRING});
  &menu_for_output($r);      
     }      my $helper = Apache::lonhelper::helper->new("Printing Helper");
 #-- additional menu for class printing      $helper->declareVar('symb');
      if ($ENV{'form.phase'} eq 'two') {      $helper->declareVar('postdata');    
  if($ENV{'form.choice'} eq 'All class print') {      $helper->declareVar('curseed'); 
      &additional_class_menu($r);      $helper->declareVar('probstatus');   
  } elsif($ENV{'form.choice'} eq 'Subdirectory print') {      $helper->declareVar('filename');
      &problem_choice_menu($r);      $helper->declareVar('construction');
  } else {      $helper->declareVar('assignment');
      $ENV{'form.phase'} = 'three';      $helper->declareVar('style_file');
  }      $helper->declareVar('student_sort');
      }      $helper->declareVar('FINISHPAGE');
 #-- additional menu for page layout (one column case)      $helper->declareVar('PRINT_TYPE');
     if ($ENV{'form.phase'} eq 'three') {      $helper->declareVar("showallfoils");
  if($ENV{'form.numberofcolumns'} == 1) {      $helper->declareVar("STUDENTS");
     &additional_print_menu($r);  
       #  The page breaks can get loaded initially from the course environment:
       # But we only do this in the initial state so that they are allowed to change.
       #
   
       # $helper->{VARS}->{FINISHPAGE} = '';
       
       &Apache::loncommon::restore_course_settings('print',
    {'pagebreaks'  => 'scalar',
            'lastprinttype' => 'scalar'});
       
       # This will persistently load in the data we want from the
       # very first screen.
       
       if($helper->{VARS}->{PRINT_TYPE} eq $env{'form.lastprinttype'}) {
    if (!defined ($env{"form.CURRENT_STATE"})) {
       
       $helper->{VARS}->{FINISHPAGE} = $env{'form.pagebreaks'};
    } else {
       my $state = $env{"form.CURRENT_STATE"};
       if ($state eq "START") {
    $helper->{VARS}->{FINISHPAGE} = $env{'form.pagebreaks'};
       }
    }
   
       }
   
   
       # Detect whether we're coming from construction space
       if ($env{'form.postdata'}=~/^(?:http:\/\/[^\/]+\/|\/|)\~([^\/]+)\/(.*)$/) {
           $helper->{VARS}->{'filename'} = "~$1/$2";
           $helper->{VARS}->{'construction'} = 1;
       } else {
           if ($env{'form.postdata'}) {
               $helper->{VARS}->{'symb'} = &Apache::lonnet::symbread($env{'form.postdata'});
       if ( $helper->{VARS}->{'symb'} eq '') {
    $helper->{VARS}->{'postdata'} = $env{'form.postdata'};
       }
           }
           if ($env{'form.symb'}) {
               $helper->{VARS}->{'symb'} = $env{'form.symb'};
           }
           if ($env{'form.url'}) {
               $helper->{VARS}->{'symb'} = &Apache::lonnet::symbread($helper->{VARS}->{'postdata'});
           }
   
       }
   
       if ($env{'form.symb'}) {
           $helper->{VARS}->{'symb'} = $env{'form.symb'};
       }
       if ($env{'form.url'}) {
           $helper->{VARS}->{'symb'} = &Apache::lonnet::symbread($helper->{VARS}->{'postdata'});
   
       }
       $helper->{VARS}->{'symb'}=
    &Apache::lonenc::check_encrypt($helper->{VARS}->{'symb'});
       my ($resourceTitle,$sequenceTitle,$mapTitle) = &details_for_menu($helper);
       if ($sequenceTitle ne '') {$helper->{VARS}->{'assignment'}=$sequenceTitle;}
   
       
       # Extract map
       my $symb = $helper->{VARS}->{'symb'};
       my ($map, $id, $url);
       my $subdir;
       my $is_published=0; # True when printing from resource space.
   
       # Get the resource name from construction space
       if ($helper->{VARS}->{'construction'}) {
           $resourceTitle = substr($helper->{VARS}->{'filename'}, 
                                   rindex($helper->{VARS}->{'filename'}, '/')+1);
           $subdir = substr($helper->{VARS}->{'filename'},
                            0, rindex($helper->{VARS}->{'filename'}, '/') + 1);
       } else {
    if ($symb ne '') {
       ($map, $id, $url) = &Apache::lonnet::decode_symb($symb);
       $helper->{VARS}->{'postdata'} = 
    &Apache::lonenc::check_encrypt(&Apache::lonnet::clutter($url));
    } else {
       $url = $helper->{VARS}->{'postdata'};
       $is_published=1; # From resource space.
    }
    $url = &Apache::lonnet::clutter($url);
   
           if (!$resourceTitle) { # if the resource doesn't have a title, use the filename
               my $postdata = $helper->{VARS}->{'postdata'};
               $resourceTitle = substr($postdata, rindex($postdata, '/') + 1);
           }
           $subdir = &Apache::lonnet::filelocation("", $url);
       }
       if (!$helper->{VARS}->{'curseed'} && $env{'form.curseed'}) {
    $helper->{VARS}->{'curseed'}=$env{'form.curseed'};
       }
       if (!$helper->{VARS}->{'probstatus'} && $env{'form.problemtype'}) {
    $helper->{VARS}->{'probstatus'}=$env{'form.problemtype'};
       }
   
       my $userCanSeeHidden = Apache::lonnavmaps::advancedUser();
   
       Apache::lonhelper::registerHelperTags();
   
       # "Delete everything after the last slash."
       $subdir =~ s|/[^/]+$||;
   
       # What can be printed is a very dynamic decision based on
       # lots of factors. So we need to dynamically build this list.
       # To prevent security leaks, states are only added to the wizard
       # if they can be reached, which ensures manipulating the form input
       # won't allow anyone to reach states they shouldn't have permission
       # to reach.
   
       # printChoices is tracking the kind of printing the user can
       # do, and will be used in a choices construction later.
       # In the meantime we will be adding states and elements to
       # the helper by hand.
       my $printChoices = [];
       my $paramHash;
   
       if ($resourceTitle) {
           push @{$printChoices}, ["<b><i>$resourceTitle</i></b> (".&mt('the resource you just saw on the screen').")", 'current_document', 'PAGESIZE'];
       }
   
       # Useful filter strings
       my $isProblem = '($res->is_problem()||$res->contains_problem) ';
       $isProblem .= ' && !$res->randomout()' if !$userCanSeeHidden;
       my $isProblemOrMap = '$res->is_problem() || $res->contains_problem() || $res->is_sequence()';
       my $isNotMap = '!$res->is_sequence()';
       $isNotMap .= ' && !$res->randomout()' if !$userCanSeeHidden;
       my $isMap = '$res->is_map()';
       my $symbFilter = '$res->shown_symb()';
       my $urlValue = '$res->link()';
   
       $helper->declareVar('SEQUENCE');
   
       # If we're in a sequence...
   
       my $start_new_option;
       if ($perm{'pav'}) {
    $start_new_option = 
       "<option text='".&mt('Start new page<br />before selected').
       "' variable='FINISHPAGE' />";
       }
   
       if (($helper->{'VARS'}->{'construction'} ne '1' ) &&
   
    $helper->{VARS}->{'postdata'} &&
    $helper->{VARS}->{'assignment'}) {
           # Allow problems from sequence
           push @{$printChoices}, [&mt('Selected <b>Problems</b> in folder <b><i>[_1]</i></b>',$sequenceTitle), 'map_problems', 'CHOOSE_PROBLEMS'];
           # Allow all resources from sequence
           push @{$printChoices}, [&mt('Selected <b>Resources</b> in folder <b><i>[_1]</i></b>',$sequenceTitle), 'map_problems_pages', 'CHOOSE_PROBLEMS_HTML'];
   
           my $helperFragment = <<HELPERFRAGMENT;
     <state name="CHOOSE_PROBLEMS" title="Select Problem(s) to print">
       <resource variable="RESOURCES" multichoice="1" toponly='1' addstatus="1"
                 closeallpages="1">
         <nextstate>PAGESIZE</nextstate>
         <filterfunc>return $isProblem;</filterfunc>
         <mapurl>$map</mapurl>
         <valuefunc>return $symbFilter;</valuefunc>
         $start_new_option
         </resource>
       </state>
   
     <state name="CHOOSE_PROBLEMS_HTML" title="Select Resource(s) to print">
       <resource variable="RESOURCES" multichoice="1" toponly='1' addstatus="1"
                 closeallpages="1">
         <nextstate>PAGESIZE</nextstate>
         <filterfunc>return $isNotMap;</filterfunc>
         <mapurl>$map</mapurl>
         <valuefunc>return $symbFilter;</valuefunc>
         $start_new_option
         </resource>
       </state>
   HELPERFRAGMENT
   
    &Apache::lonxml::xmlparse($r, 'helper', $helperFragment);
       }
   
       # If the user has pfo (print for otheres) allow them to print all 
       # problems and resources  in the entier course, optionally for selected students
       if ($perm{'pfo'} &&  !$is_published  &&
           ($helper->{VARS}->{'postdata'}=~/\/res\// || $helper->{VARS}->{'postdata'}=~/\/(syllabus|smppg|aboutme|bulletinboard)$/)) { 
   
           push @{$printChoices}, ['Selected <b>Problems</b> from <b>entire course</b>', 'all_problems', 'ALL_PROBLEMS'];
    push @{$printChoices}, ['Selected <b>Resources</b> from <b>entire course</b>', 'all_resources', 'ALL_RESOURCES'];
            &Apache::lonxml::xmlparse($r, 'helper', <<ALL_PROBLEMS);
     <state name="ALL_PROBLEMS" title="Select Problem(s) to print">
       <resource variable="RESOURCES" toponly='0' multichoice="1"
    suppressEmptySequences='0' addstatus="1" closeallpages="1">
         <nextstate>PAGESIZE</nextstate>
         <filterfunc>return $isProblemOrMap;</filterfunc>
         <choicefunc>return $isNotMap;</choicefunc>
         <valuefunc>return $symbFilter;</valuefunc>
         $start_new_option
       </resource>
     </state>
     <state name="ALL_RESOURCES" title="Select Resource(s) to print">
       <resource variable="RESOURCES" toponly='0' multichoice='1'
                 suppressEmptySequences='0' addstatus='1' closeallpages='1'>
         <nextstate>PAGESIZE</nextstate>
         <filterfunc>return $isNotMap; </filterfunc>
         <valuefunc>return $symbFilter;</valuefunc>
         $start_new_option
       </resource>
     </state>
   ALL_PROBLEMS
   
    if ($helper->{VARS}->{'assignment'}) {
       push @{$printChoices}, [&mt("Selected <b>Problems</b> from folder <b><i>[_1]</i></b> for <b>selected people</b>",$sequenceTitle), 'problems_for_students', 'CHOOSE_STUDENTS'];
       push @{$printChoices}, [&mt("Selected <b>Problems</b> from folder <b><i>[_1]</i></b> for <b>CODEd assignments</b>",$sequenceTitle), 'problems_for_anon', 'CHOOSE_ANON1'];
    }
   
    # resource_selector will hold a few states that:
    #   - Allow resources to be selected for printing.
    #   - Determine pagination between assignments.
    #   - Determine how many assignments should be bundled into a single PDF.
           # TODO:
    #    Probably good to do things like separate this up into several vars, each
    #    with one state, and use REGEXPs at inclusion time to set state names
    #    and next states for better mix and match capability
    #
    my $resource_selector=<<RESOURCE_SELECTOR;
       <state name="SELECT_PROBLEMS" title="Select resources to print">
      <nextstate>PRINT_FORMATTING</nextstate> 
      <message><br /><big><i><b>Select resources for the assignment</b></i></big><br /></message>
       <resource variable="RESOURCES" multichoice="1" addstatus="1" 
                 closeallpages="1">
         <filterfunc>return $isProblem;</filterfunc>
         <mapurl>$map</mapurl>
         <valuefunc>return $symbFilter;</valuefunc>
         $start_new_option
         </resource>
       </state>
       <state name="PRINT_FORMATTING" title="How should results be printed?">
       <message><br /><big><i><b>How should the results be printed?</b></i></big><br /></message>
       <choices variable="EMPTY_PAGES">
         <choice computer='0'>Start each student\'s assignment on a new page/column (add a pagefeed after each assignment)</choice>
         <choice computer='1'>Add one empty page/column after each student\'s assignment</choice>
         <choice computer='2'>Add two empty pages/column after each student\'s assignment</choice>
         <choice computer='3'>Add three empty pages/column after each student\'s assignment</choice>
       </choices>
       <nextstate>PAGESIZE</nextstate>
       <message><hr width='33%' /><b>How do you want assignments split into PDF files? </b></message>
       <choices variable="SPLIT_PDFS">
          <choice computer="all">All assignments in a single PDF file</choice>
          <choice computer="sections">Each PDF contains exactly one section</choice>
          <choice computer="oneper">Each PDF contains exactly one assignment</choice>
          <choice computer="usenumber" relatedvalue="NUMBER_TO_PRINT">
               Specify the number of assignments per PDF:</choice>
       </choices>
       </state>
   RESOURCE_SELECTOR
   
           &Apache::lonxml::xmlparse($r, 'helper', <<CHOOSE_STUDENTS);
     <state name="CHOOSE_STUDENTS" title="Select Students and Resources">
         <message><b>Select sorting order of printout</b> </message>
       <choices variable='student_sort'>
         <choice computer='0'>Sort by section then student</choice>
         <choice computer='1'>Sort by students across sections.</choice>
       </choices>
         <message><br /><hr /><br /> </message>
         <student multichoice='1' variable="STUDENTS" nextstate="SELECT_PROBLEMS" coursepersonnel="1"/>
     </state>
       $resource_selector
   CHOOSE_STUDENTS
   
    my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
    my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
           my @names=&Apache::lonnet::getkeys('CODEs',$cdom,$cnum);
    my $namechoice='<choice></choice>';
    foreach my $name (sort {uc($a) cmp uc($b)} @names) {
       if ($name =~ /^error: 2 /) { next; }
       if ($name =~ /^type\0/) { next; }
       $namechoice.='<choice computer="'.$name.'">'.$name.'</choice>';
    }
   
   
    my %code_values;
    my %codes_to_print;
    foreach my $key (@names) {
       %code_values = &Apache::grades::get_codes($key, $cdom, $cnum);
       foreach my $key (keys(%code_values)) {
    $codes_to_print{$key} = 1;
       }
    }
   
    my $code_selection;
    foreach my $code (sort {uc($a) cmp uc($b)} (keys(%codes_to_print))) {
       my $choice  = $code;
       if ($code =~ /^[A-Z]+$/) { # Alpha code
    $choice = &letters_to_num($code);
       }
       push(@{$helper->{DATA}{ALL_CODE_CHOICES}},[$code,$choice]);
    }
    if (%codes_to_print) {
       $code_selection .='   
       <message><b>Choose single CODE from list:</b></message>
    <message></td><td></message>
    <dropdown variable="CODE_SELECTED_FROM_LIST" multichoice="0" allowempty="0">
                     <choice></choice>
                     <exec>
                        push(@{$state->{CHOICES}},@{$helper->{DATA}{ALL_CODE_CHOICES}});
                     </exec>
    </dropdown>
       <message></td></tr><tr><td></message>
               '.$/;
   
    }
   
   
    open(FH,$Apache::lonnet::perlvar{'lonTabDir'}.'/scantronformat.tab');
    my $codechoice='';
    foreach my $line (<FH>) {
       my ($name,$description,$code_type,$code_length)=
    (split(/:/,$line))[0,1,2,4];
       if ($code_length > 0 && 
    $code_type =~/^(letter|number|-1)/) {
    $codechoice.='<choice computer="'.$name.'">'.$description.'</choice>';
       }
    }
    if ($codechoice eq '') {
       $codechoice='<choice computer="default">Default</choice>';
    }
           &Apache::lonxml::xmlparse($r, 'helper', <<CHOOSE_ANON1);
     <state name="CHOOSE_ANON1" title="Specify CODEd Assignments">
       <nextstate>SELECT_PROBLEMS</nextstate>
       <message><h4>Fill out one of the forms below</h4></message>
       <message><br /><hr /> <br /></message>
       <message><h3>Generate new CODEd Assignments</h3></message>
       <message><table><tr><td><b>Number of CODEd assignments to print:</b></td><td></message>
       <string variable="NUMBER_TO_PRINT_TOTAL" maxlength="5" size="5">
          <validator>
    if (((\$helper->{'VARS'}{'NUMBER_TO_PRINT_TOTAL'}+0) < 1) &&
       !\$helper->{'VARS'}{'REUSE_OLD_CODES'}                &&
               !\$helper->{'VARS'}{'SINGLE_CODE'}                    &&
       !\$helper->{'VARS'}{'CODE_SELECTED_FROM_LIST'}) {
       return "You need to specify the number of assignments to print";
    }
    return undef;
          </validator>
       </string>
       <message></td></tr><tr><td></message>
       <message><b>Names to store the CODEs under for later:</b></message>
       <message></td><td></message>
       <string variable="ANON_CODE_STORAGE_NAME" maxlength="50" size="20" />
       <message></td></tr><tr><td></message>
       <message><b>Bubble sheet type:</b></message>
       <message></td><td></message>
       <dropdown variable="CODE_OPTION" multichoice="0" allowempty="0">
       $codechoice
       </dropdown>
       <message></td></tr><tr><td colspan="2"></td></tr><tr><td></message>
       <message></td></tr><tr><td></table></message>
       <message><br /><hr /><h3>Print a Specific CODE </h3><br /><table></message>
       <message><tr><td><b>Enter a CODE to print:</b></td><td></message>
       <string variable="SINGLE_CODE" size="10">
           <validator>
      if(!\$helper->{'VARS'}{'NUMBER_TO_PRINT_TOTAL'}           &&
         !\$helper->{'VARS'}{'REUSE_OLD_CODES'}                 &&
         !\$helper->{'VARS'}{'CODE_SELECTED_FROM_LIST'}) {
         return &Apache::lonprintout::is_code_valid(\$helper->{'VARS'}{'SINGLE_CODE'},
         \$helper->{'VARS'}{'CODE_OPTION'});
      } else {
          return undef; # Other forces control us.
      }
           </validator>
       </string>
       <message></td></tr><tr><td></message>
           $code_selection
       <message></td></tr></table></message>
       <message><hr /><h3>Reprint a Set of Saved CODEs</h3><table><tr><td></message>
       <message><b>Select saved CODEs:</b></message>
       <message></td><td></message>
       <dropdown variable="REUSE_OLD_CODES">
           $namechoice
       </dropdown>
       <message></td></tr></table></message>
     </state>
     $resource_selector
   CHOOSE_ANON1
   
   
    if ($helper->{VARS}->{'assignment'}) {
       push @{$printChoices}, [&mt("Selected <b>Resources</b> from folder <b><i>[_1]</i></b> for <b>selected people</b>",$sequenceTitle), 'resources_for_students', 'CHOOSE_STUDENTS1'];
       push @{$printChoices}, [&mt("Selected <b>Resources</b> from folder <b><i>[_1]</i></b> for <b>CODEd assignments</b>",$sequenceTitle), 'resources_for_anon', 'CHOOSE_ANON2'];
    }
       
   
    $resource_selector=<<RESOURCE_SELECTOR;
       <state name="SELECT_RESOURCES" title="Select Resources">
       <nextstate>PRINT_FORMATTING</nextstate>
       <message><br /><big><i><b>Select resources for the assignment</b></i></big><br /></message>
       <resource variable="RESOURCES" multichoice="1" addstatus="1" 
                 closeallpages="1">
         <filterfunc>return $isNotMap;</filterfunc>
         <mapurl>$map</mapurl>
         <valuefunc>return $symbFilter;</valuefunc>
         $start_new_option
         </resource>
       </state>
       <state name="PRINT_FORMATTING" title="Format of the print job">
       <nextstate>NUMBER_PER_PDF</nextstate>
       <message><br /><big><i><b>How should the results be printed?</b></i></big><br /></message>
       <choices variable="EMPTY_PAGES">
         <choice computer='0'>Start each student\'s assignment on a new page/column (add a pagefeed after each assignment)</choice>
         <choice computer='1'>Add one empty page/column after each student\'s assignment</choice>
         <choice computer='2'>Add two empty pages/column after each student\'s assignment</choice>
         <choice computer='3'>Add three empty pages/column after each student\'s assignment</choice>
       </choices>
       <nextstate>PAGESIZE</nextstate>
       <message><hr width='33%' /><b>How do you want assignments split into PDF files? </b></message>
       <choices variable="SPLIT_PDFS">
          <choice computer="all">All assignments in a single PDF file</choice>
          <choice computer="sections">Each PDF contains exactly one section</choice>
          <choice computer="oneper">Each PDF contains exactly one assignment</choice>
          <choice computer="usenumber" relatedvalue="NUMBER_TO_PRINT">
              Specify the number of assignments per PDF:</choice>
       </choices>
       </state>
   RESOURCE_SELECTOR
   
    &Apache::lonxml::xmlparse($r, 'helper', <<CHOOSE_STUDENTS1);
     <state name="CHOOSE_STUDENTS1" title="Select Students and Resources">
       <choices variable='student_sort'>
         <choice computer='0'>Sort by section then student</choice>
         <choice computer='1'>Sort by students across sections.</choice>
       </choices>
       <message><br /><hr /><br /></message>
       <student multichoice='1' variable="STUDENTS" nextstate="SELECT_RESOURCES" coursepersonnel="1" />
   
       </state>
       $resource_selector
   CHOOSE_STUDENTS1
   
    &Apache::lonxml::xmlparse($r, 'helper', <<CHOOSE_ANON2);
     <state name="CHOOSE_ANON2" title="Select CODEd Assignments">
       <nextstate>SELECT_RESOURCES</nextstate>
       <message><h4>Fill out one of the forms below</h4></message>
       <message><br /><hr /> <br /></message>
       <message><h3>Generate new CODEd Assignments</h3></message>
       <message><table><tr><td><b>Number of CODEd assignments to print:</b></td><td></message>
       <string variable="NUMBER_TO_PRINT_TOTAL" maxlength="5" size="5">
          <validator>
    if (((\$helper->{'VARS'}{'NUMBER_TO_PRINT_TOTAL'}+0) < 1) &&
       !\$helper->{'VARS'}{'REUSE_OLD_CODES'}                &&
       !\$helper->{'VARS'}{'SINGLE_CODE'}                   &&
       !\$helper->{'VARS'}{'CODE_SELECTED_FROM_LIST'}) {
       return "You need to specify the number of assignments to print";
    }
    return undef;
          </validator>
       </string>
       <message></td></tr><tr><td></message>
       <message><b>Names to store the CODEs under for later:</b></message>
       <message></td><td></message>
       <string variable="ANON_CODE_STORAGE_NAME" maxlength="50" size="20" />
       <message></td></tr><tr><td></message>
       <message><b>Bubble sheet type:</b></message>
       <message></td><td></message>
       <dropdown variable="CODE_OPTION" multichoice="0" allowempty="0">
       $codechoice
       </dropdown>
       <message></td></tr><tr><td></table></message>
       <message><br /><hr /><h3>Print a Specific CODE </h3><br /><table></message>
       <message><tr><td><b>Enter a CODE to print:</b></td><td></message>
       <string variable="SINGLE_CODE" size="10">
           <validator>
      if(!\$helper->{'VARS'}{'NUMBER_TO_PRINT_TOTAL'}           &&
         !\$helper->{'VARS'}{'REUSE_OLD_CODES'}                 &&
         !\$helper->{'VARS'}{'CODE_SELECTED_FROM_LIST'}) {
         return &Apache::lonprintout::is_code_valid(\$helper->{'VARS'}{'SINGLE_CODE'},
         \$helper->{'VARS'}{'CODE_OPTION'});
      } else {
          return undef; # Other forces control us.
      }
           </validator>
       </string>
       <message></td></tr><tr><td></message>
           $code_selection
       <message></td></tr></table></message>
       <message><hr /><h3>Reprint a Set of Saved CODEs</h3><table><tr><td></message>
       <message><b>Select saved CODEs:</b></message>
       <message></td><td></message>
       <dropdown variable="REUSE_OLD_CODES">
           $namechoice
       </dropdown>
       <message></td></tr></table></message>
     </state>
       $resource_selector
   CHOOSE_ANON2
       }
   
       # FIXME: That RE should come from a library somewhere.
       if (($perm{'pav'} 
    && $subdir ne $Apache::lonnet::perlvar{'lonDocRoot'}.'/res/'
    && (defined($helper->{'VARS'}->{'construction'})
       ||
       (&Apache::lonnet::allowed('bre',$subdir) eq 'F'
        && 
        $helper->{VARS}->{'postdata'}=~/\.(problem|exam|quiz|assess|survey|form|library|page|xml|html|htm|xhtml|xhtm)/)
       )) 
    && $helper->{VARS}->{'assignment'} eq ""
    ) {
   
    my $pretty_dir = &Apache::lonnet::hreflocation($subdir);
           push @{$printChoices}, [&mt("Selected <b>Problems</b> from current subdirectory <b><i>[_1]</i></b>",$pretty_dir), 'problems_from_directory', 'CHOOSE_FROM_SUBDIR'];
           my $xmlfrag = <<CHOOSE_FROM_SUBDIR;
     <state name="CHOOSE_FROM_SUBDIR" title="Select File(s) from <b><small>$pretty_dir</small></b> to print">
   
       <files variable="FILES" multichoice='1'>
         <nextstate>PAGESIZE</nextstate>
         <filechoice>return '$subdir';</filechoice>
   CHOOSE_FROM_SUBDIR
           
           # this is broken up because I really want interpolation above,
           # and I really DON'T want it below
           $xmlfrag .= <<'CHOOSE_FROM_SUBDIR';
         <filefilter>return Apache::lonhelper::files::not_old_version($filename) &&
     $filename =~ m/\.(problem|exam|quiz|assess|survey|form|library)$/;
         </filefilter>
         </files>
       </state>
   CHOOSE_FROM_SUBDIR
           &Apache::lonxml::xmlparse($r, 'helper', $xmlfrag);
       }
   
       # Allow the user to select any sequence in the course, feed it to
       # another resource selector for that sequence
       if (!$helper->{VARS}->{'construction'} && !$is_published) {
    push @$printChoices, ["Selected <b>Resources</b> from <b>selected folder</b> in course",
         'select_sequences', 'CHOOSE_SEQUENCE'];
    my $escapedSequenceName = $helper->{VARS}->{'SEQUENCE'};
    #Escape apostrophes and backslashes for Perl
    $escapedSequenceName =~ s/\\/\\\\/g;
    $escapedSequenceName =~ s/'/\\'/g;
    &Apache::lonxml::xmlparse($r, 'helper', <<CHOOSE_FROM_ANY_SEQUENCE);
     <state name="CHOOSE_SEQUENCE" title="Select Sequence To Print From">
       <message>Select the sequence to print resources from:</message>
       <resource variable="SEQUENCE">
         <nextstate>CHOOSE_FROM_ANY_SEQUENCE</nextstate>
         <filterfunc>return \$res->is_sequence;</filterfunc>
         <valuefunc>return $urlValue;</valuefunc>
         <choicefunc>return \$res->hasResource(\$res,sub { return !\$_[0]->is_sequence() },0,0);
    </choicefunc>
         </resource>
       </state>
     <state name="CHOOSE_FROM_ANY_SEQUENCE" title="Select Resources To Print">
       <message>(mark desired resources then click "next" button) <br /></message>
       <resource variable="RESOURCES" multichoice="1" toponly='1' addstatus="1"
                 closeallpages="1">
         <nextstate>PAGESIZE</nextstate>
         <filterfunc>return $isNotMap</filterfunc>
         <mapurl evaluate='1'>return '$escapedSequenceName';</mapurl>
         <valuefunc>return $symbFilter;</valuefunc>
         $start_new_option
         </resource>
       </state>
   CHOOSE_FROM_ANY_SEQUENCE
   }
   
       # Generate the first state, to select which resources get printed.
       Apache::lonhelper::state->new("START", "Select Printing Options:");
       $paramHash = Apache::lonhelper::getParamHash();
       $paramHash->{MESSAGE_TEXT} = "";
       Apache::lonhelper::message->new();
       $paramHash = Apache::lonhelper::getParamHash();
       $paramHash->{'variable'} = 'PRINT_TYPE';
       $paramHash->{CHOICES} = $printChoices;
       Apache::lonhelper::choices->new();
   
       my $startedTable = 0; # have we started an HTML table yet? (need
                             # to close it later)
   
       if (($perm{'pav'} and &Apache::lonnet::allowed('vgr',$env{'request.course.id'})) or 
    ($helper->{VARS}->{'construction'} eq '1')) {
    addMessage("<hr width='33%' /><table><tr><td align='right'>Print: </td><td>");
           $paramHash = Apache::lonhelper::getParamHash();
    $paramHash->{'variable'} = 'ANSWER_TYPE';   
    $helper->declareVar('ANSWER_TYPE');         
           $paramHash->{CHOICES} = [
                                      ['Without Answers', 'yes'],
                                      ['With Answers', 'no'],
                                      ['Only Answers', 'only']
                                   ];
           Apache::lonhelper::dropdown->new();
    addMessage("</td></tr>");
    $startedTable = 1;
       }
   
       if ($perm{'pav'}) {
    if (!$startedTable) {
       addMessage("<hr width='33%' /><table><tr><td align='right'>LaTeX mode: </td><td>");
       $startedTable = 1;
    } else {
       addMessage("<tr><td align='right'>LaTeX mode: </td><td>");
    }
           $paramHash = Apache::lonhelper::getParamHash();
    $paramHash->{'variable'} = 'LATEX_TYPE';   
    $helper->declareVar('LATEX_TYPE');  
    if ($helper->{VARS}->{'construction'} eq '1') {       
       $paramHash->{CHOICES} = [
        ['standard LaTeX mode', 'standard'], 
        ['LaTeX batchmode', 'batchmode'], ];
  } else {   } else {
     $ENV{'form.phase'} = 'four';      $paramHash->{CHOICES} = [
        ['LaTeX batchmode', 'batchmode'],
        ['standard LaTeX mode', 'standard'] ];
  }   }
           Apache::lonhelper::dropdown->new();
    
    addMessage("</td></tr><tr><td align='right'>Print Table of Contents: </td><td>");
           $paramHash = Apache::lonhelper::getParamHash();
    $paramHash->{'variable'} = 'TABLE_CONTENTS';   
    $helper->declareVar('TABLE_CONTENTS');         
           $paramHash->{CHOICES} = [
                                      ['No', 'no'],
                                      ['Yes', 'yes'] ];
           Apache::lonhelper::dropdown->new();
    addMessage("</td></tr>");
           
    if (not $helper->{VARS}->{'construction'}) {
       addMessage("<tr><td align='right'>Print Index: </td><td>");
       $paramHash = Apache::lonhelper::getParamHash();
       $paramHash->{'variable'} = 'TABLE_INDEX';   
       $helper->declareVar('TABLE_INDEX');         
       $paramHash->{CHOICES} = [
        ['No', 'no'],
        ['Yes', 'yes'] ];
       Apache::lonhelper::dropdown->new();
       addMessage("</td></tr>");
       addMessage("<tr><td align='right'>Print Discussions: </td><td>");
       $paramHash = Apache::lonhelper::getParamHash();
       $paramHash->{'variable'} = 'PRINT_DISCUSSIONS';   
       $helper->declareVar('PRINT_DISCUSSIONS');         
       $paramHash->{CHOICES} = [
        ['No', 'no'],
        ['Yes', 'yes'] ];
       Apache::lonhelper::dropdown->new();
       addMessage("</td></tr>");
   
       addMessage("<tr><td align = 'right'>  </td><td>");
       $paramHash = Apache::lonhelper::getParamHash();
       $paramHash->{'multichoice'} = "true";
       $paramHash->{'allowempty'}  = "true";
       $paramHash->{'variable'}   = "showallfoils";
       $paramHash->{'CHOICES'} = [ ["Show all foils", "1"] ];
       Apache::lonhelper::choices->new();
       addMessage("</td></tr>");
    }
   
    if ($helper->{'VARS'}->{'construction'}) { 
       my $stylevalue=$env{'construct.style'};
       my $xmlfrag .= <<"RNDSEED";
       <message><tr><td align='right'>Use random seed:  </td><td></message>
       <string variable="curseed" size="15" maxlength="15">
    <defaultvalue>
               return $helper->{VARS}->{'curseed'};
           </defaultvalue>
       </string>
        <message></td></tr><tr><td align="right">Use style file:</td><td></message>
                <message><input type="text" size="40" name="style_file_value" value="$stylevalue"  />&nbsp; <a href="javascript:openbrowser('helpform','style_file_value','sty')">Select style file</a> </td><tr><td></message>
        <choices allowempty="1" multichoice="true" variable="showallfoils">
                   <choice computer="1">Show all foils?</choice>
                </choices>
        <message></td></tr></message>
   RNDSEED
               &Apache::lonxml::xmlparse($r, 'helper', $xmlfrag);
       $helper->{'VARS'}->{'style_file'}=$env{'form.style_file_value'};
       
    } 
     }      }
 #-- core part   
     if ($ENV{'form.phase'} eq 'four') {  
  &output_data($r);  
   
       if ($startedTable) {
    addMessage("</table>");
       }
   
       Apache::lonprintout::page_format_state->new("FORMAT");
   
       # Generate the PAGESIZE state which will offer the user the margin
       # choices if they select one column
       Apache::lonhelper::state->new("PAGESIZE", "Set Margins");
       Apache::lonprintout::page_size_state->new('pagesize', 'FORMAT', 'FINAL');
   
   
       $helper->process();
   
   
       # MANUAL BAILOUT CONDITION:
       # If we're in the "final" state, bailout and return to handler
       if ($helper->{STATE} eq 'FINAL') {
           return $helper;
       }    
   
       $r->print($helper->display());
       if ($helper->{STATE} eq 'START') {
    &recently_generated($r);
     }      }
       &Apache::lonhelper::unregisterHelperTags();
   
     return OK;      return OK;
   }
   
 }   
   
 1;  1;
 __END__  
   
   package Apache::lonprintout::page_format_state;
   
   =pod
   
   =head1 Helper element: page_format_state
   
   See lonhelper.pm documentation for discussion of the helper framework.
   
   Apache::lonprintout::page_format_state is an element that gives the 
   user an opportunity to select the page layout they wish to print 
   with: Number of columns, portrait/landscape, and paper size. If you 
   want to change the paper size choices, change the @paperSize array 
   contents in this package.
   
   page_format_state is always directly invoked in lonprintout.pm, so there
   is no tag interface. You actually pass parameters to the constructor.
   
   =over 4
   
   =item * B<new>(varName): varName is where the print information will be stored in the format FIXME.
   
   =back
   
   =cut
   
   use Apache::lonhelper;
   
   no strict;
   @ISA = ("Apache::lonhelper::element");
   use strict;
   use Apache::lonlocal;
   use Apache::lonnet;
   
   my $maxColumns = 2;
   # it'd be nice if these all worked
   #my @paperSize = ("letter [8 1/2x11 in]", "legal [8 1/2x14 in]", 
   #                 "tabloid (ledger) [11x17 in]", "executive [7 1/2x10 in]",
   #                 "a2 [420x594 mm]", "a3 [297x420 mm]", "a4 [210x297 mm]", 
   #                 "a5 [148x210 mm]", "a6 [105x148 mm]" );
   my @paperSize = ("letter [8 1/2x11 in]", "legal [8 1/2x14 in]", 
    "a4 [210x297 mm]");
   
   # Tentative format: Orientation (L = Landscape, P = portrait) | Colnum |
   #                   Paper type
   
   sub new { 
       my $self = Apache::lonhelper::element->new();
   
       shift;
   
       $self->{'variable'} = shift;
       my $helper = Apache::lonhelper::getHelper();
       $helper->declareVar($self->{'variable'});
       bless($self);
       return $self;
   }
   
   sub render {
       my $self = shift;
       my $helper = Apache::lonhelper::getHelper();
       my $result = '';
       my $var = $self->{'variable'};
       my $PageLayout=&mt('Page layout');
       my $NumberOfColumns=&mt('Number of columns');
       my $PaperType=&mt('Paper type');
       $result .= <<STATEHTML;
   
   <hr width="33%" />
   <table cellpadding="3">
     <tr>
       <td align="center"><b>$PageLayout</b></td>
       <td align="center"><b>$NumberOfColumns</b></td>
       <td align="center"><b>$PaperType</b></td>
     </tr>
     <tr>
       <td>
         <label><input type="radio" name="${var}.layout" value="L" /> Landscape </label><br />
         <label><input type="radio" name="${var}.layout" value="P" checked='1'  /> Portrait </label>
       </td>
       <td align="center">
         <select name="${var}.cols">
   STATEHTML
   
       my $i;
       for ($i = 1; $i <= $maxColumns; $i++) {
           if ($i == 2) {
               $result .= "<option value='$i' selected>$i</option>\n";
           } else {
               $result .= "<option value='$i'>$i</option>\n";
           }
       }
   
       $result .= "</select></td><td>\n";
       $result .= "<select name='${var}.paper'>\n";
   
       my %parmhash=&Apache::lonnet::coursedescription($env{'request.course.id'});
       my $DefaultPaperSize=lc($parmhash{'default_paper_size'});
       $DefaultPaperSize=~s/\s//g;
       if ($DefaultPaperSize eq '') {$DefaultPaperSize='letter';}
       $i = 0;
       foreach (@paperSize) {
    $_=~/(\w+)/;
    my $papersize=$1;
           if ($paperSize[$i]=~/$DefaultPaperSize/) {
               $result .= "<option selected value='$papersize'>" . $paperSize[$i] . "</option>\n";
           } else {
               $result .= "<option value='$papersize'>" . $paperSize[$i] . "</option>\n";
           }
           $i++;
       }
       $result .= "</select></td></tr></table>";
       return $result;
   }
   
   sub postprocess {
       my $self = shift;
   
       my $var = $self->{'variable'};
       my $helper = Apache::lonhelper->getHelper();
       $helper->{VARS}->{$var} = 
           $env{"form.$var.layout"} . '|' . $env{"form.$var.cols"} . '|' .
           $env{"form.$var.paper"};
       return 1;
   }
   
   1;
   
   package Apache::lonprintout::page_size_state;
   
   =pod
   
   =head1 Helper element: page_size_state
   
   See lonhelper.pm documentation for discussion of the helper framework.
   
   Apache::lonprintout::page_size_state is an element that gives the 
   user the opportunity to further refine the page settings if they
   select a single-column page.
   
   page_size_state is always directly invoked in lonprintout.pm, so there
   is no tag interface. You actually pass parameters to the constructor.
   
   =over 4
   
   =item * B<new>(varName): varName is where the print information will be stored in the format FIXME.
   
   =back
   
   =cut
   
   use Apache::lonhelper;
   use Apache::lonnet;
   no strict;
   @ISA = ("Apache::lonhelper::element");
   use strict;
   
   
   
   sub new { 
       my $self = Apache::lonhelper::element->new();
   
       shift; # disturbs me (probably prevents subclassing) but works (drops
              # package descriptor)... - Jeremy
   
       $self->{'variable'} = shift;
       my $helper = Apache::lonhelper::getHelper();
       $helper->declareVar($self->{'variable'});
   
       # The variable name of the format element, so we can look into 
       # $helper->{VARS} to figure out whether the columns are one or two
       $self->{'formatvar'} = shift;
   
   
       $self->{NEXTSTATE} = shift;
       bless($self);
   
       return $self;
   }
   
   sub render {
       my $self = shift;
       my $helper = Apache::lonhelper::getHelper();
       my $result = '';
       my $var = $self->{'variable'};
   
   
   
       if (defined $self->{ERROR_MSG}) {
           $result .= '<br /><span class="LC_error">' . $self->{ERROR_MSG} . '</span><br />';
       }
   
       my $format = $helper->{VARS}->{$self->{'formatvar'}};
   
       # Use format to get sensible defaults for the margins:
   
   
       my ($laystyle, $cols, $papersize) = split(/\|/, $format);
       ($papersize)                      = split(/ /, $papersize);
   
   
       if ($laystyle eq 'L') {
    $laystyle = 'album';
       } else {
    $laystyle = 'book';
       }
   
   
       my %size;
       ($size{'width_and_units'},
        $size{'height_and_units'},
        $size{'margin_and_units'})=
    &Apache::lonprintout::page_format($papersize, $laystyle, $cols);
       
       foreach my $dimension ('width','height','margin') {
    ($size{$dimension},$size{$dimension.'_unit'}) =
       split(/ +/, $size{$dimension.'_and_units'},2);
          
    foreach my $unit ('cm','in') {
       $size{$dimension.'_options'} .= '<option ';
       if ($size{$dimension.'_unit'} eq $unit) {
    $size{$dimension.'_options'} .= 'selected="selected" ';
       }
       $size{$dimension.'_options'} .= '>'.$unit.'</option>';
    }
       }
   
       # Adjust margin for LaTeX margin: .. requires units == cm or in.
   
       if ($size{'margin_unit'} eq 'in') {
    $size{'margin'} += 1;
       }  else {
    $size{'margin'} += 2.54;
       }
       $result .= <<ELEMENTHTML;
   
     
   
   <p>How should each column be formatted?</p>
   
   <table cellpadding='3'>
     <tr>
       <td align='right'><b>Width</b>:</td>
       <td align='left'><input type='text' name='$var.width' value="$size{'width'}" size='4' /></td>
       <td align='left'>
         <select name='$var.widthunit'>
         $size{'width_options'}
         </select>
       </td>
     </tr>
     <tr>
       <td align='right'><b>Height</b>:</td>
       <td align='left'><input type='text' name="$var.height" value="$size{'height'}" size='4' /></td>
       <td align='left'>
         <select name='$var.heightunit'>
         $size{'height_options'}
         </select>
       </td>
     </tr>
     <tr>
       <td align='right'><b>Left margin</b>:</td>
       <td align='left'><input type='text' name='$var.lmargin' value="$size{'margin'}" size='4' /></td>
       <td align='left'>
         <select name='$var.lmarginunit'>
         $size{'margin_options'}
         </select>
       </td>
     </tr>
   </table>
   
   <!--<p>Hint: Some instructors like to leave scratch space for the student by
   making the width much smaller than the width of the page.</p>-->
   
   ELEMENTHTML
   
       return $result;
   }
   
   
   sub preprocess {
       my $self = shift;
       my $helper = Apache::lonhelper::getHelper();
   
       my $format = $helper->{VARS}->{$self->{'formatvar'}};
   
       #  If the user does not have 'pav' privilege, set default widths and
       #  on to the next state right away.
       #
       if (!$perm{'pav'}) {
    my $var = $self->{'variable'};
    my $format = $helper->{VARS}->{$self->{'formatvar'}};
   
    my ($laystyle, $cols, $papersize) = split(/\|/, $format);
    ($papersize)                      = split(/ /, $papersize);
   
   
    if ($laystyle eq 'L') {
       $laystyle = 'album';
    } else {
       $laystyle = 'book';
    }
    #  Figure out some good defaults for the print out and set them:
   
    my %size;
    ($size{'width'},
    $size{'height'},
    $size{'lmargin'})=
        &Apache::lonprintout::page_format($papersize, $laystyle, $cols);
   
    foreach my $dim ('width', 'height', 'lmargin') {
       my ($value, $units) = split(/ /, $size{$dim});
           
       $helper->{VARS}->{"$var.".$dim}      = $value;
       $helper->{VARS}->{"$var.".$dim.'unit'} = $units;
       
    }
   
   
    # Transition to the next state
   
    $helper->changeState($self->{NEXTSTATE});
       }
      
       return 1;
   }
   
   sub postprocess {
       my $self = shift;
   
       my $var = $self->{'variable'};
       my $helper = Apache::lonhelper->getHelper();
       my $width = $helper->{VARS}->{$var .'.width'} = $env{"form.${var}.width"}; 
       my $height = $helper->{VARS}->{$var .'.height'} = $env{"form.${var}.height"}; 
       my $lmargin = $helper->{VARS}->{$var .'.lmargin'} = $env{"form.${var}.lmargin"}; 
       $helper->{VARS}->{$var .'.widthunit'} = $env{"form.${var}.widthunit"}; 
       $helper->{VARS}->{$var .'.heightunit'} = $env{"form.${var}.heightunit"}; 
       $helper->{VARS}->{$var .'.lmarginunit'} = $env{"form.${var}.lmarginunit"}; 
   
       my $error = '';
   
       # /^-?[0-9]+(\.[0-9]*)?$/ -> optional minus, at least on digit, followed 
       # by an optional period, followed by digits, ending the string
   
       if ($width !~  /^-?[0-9]*(\.[0-9]*)?$/) {
           $error .= "Invalid width; please type only a number.<br />\n";
       }
       if ($height !~  /^-?[0-9]*(\.[0-9]*)?$/) {
           $error .= "Invalid height; please type only a number.<br />\n";
       }
       if ($lmargin !~  /^-?[0-9]*(\.[0-9]*)?$/) {
           $error .= "Invalid left margin; please type only a number.<br />\n";
       } else {
    # Adjust for LaTeX 1.0 inch margin:
   
    if ($env{"form.${var}.lmarginunit"} eq "in") {
       $helper->{VARS}->{$var.'.lmargin'} = $lmargin - 1;
    } else {
       $helper->{VARS}->{$var.'.lmargin'} = $lmargin - 2.54;
    }
       }
   
       if (!$error) {
           Apache::lonhelper::getHelper()->changeState($self->{NEXTSTATE});
           return 1;
       } else {
           $self->{ERROR_MSG} = $error;
           return 0;
       }
   }
   
   
   
   __END__
   
 #### Test block  
 #    my $ere;  
 #    foreach $ere (%ENV) {  
 # $result .= ' SS '.$ere.' => '.$ENV{$ere}.' FF '."\n\n";  
 #    }  
 ####  
Removed from v.1.59  
changed lines
  Added in v.1.495

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