Diff for /loncom/interface/lonprintout.pm between versions 1.38 and 1.561

version 1.38, 2002/07/16 20:30:53 version 1.561, 2009/09/22 14:28:50
Line 22 Line 22
 # 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 43  use strict; Line 31  use strict;
 use Apache::Constants qw(:common :http);  use Apache::Constants qw(:common :http);
 use Apache::lonxml;  use Apache::lonxml;
 use Apache::lonnet;  use Apache::lonnet;
   use Apache::loncommon;
 use Apache::inputtags;  use Apache::inputtags;
   use Apache::grades;
 use Apache::edit;  use Apache::edit;
 use Apache::File();  use Apache::File();
   use Apache::lonnavmaps;
   use Apache::admannotations;
   use Apache::lonenc;
   use Apache::entities;
   use Apache::londefdef;
   
   use File::Basename;
   
   use HTTP::Response;
   
   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;
   
   # Global variables that describe errors in ssi calls detected  by ssi_with_retries.
   #
   
 sub headerform {  my $ssi_error; # True if there was an ssi error.
     my $r = shift;  my $ssi_last_error_resource; # The resource URI that could not be fetched.
     $r->print(<<ENDHEADER);  my $ssi_last_error; # The error text from the server. (e.g. 500 Server timed out).
 <html>  
 <head>  #
 <title>LON-CAPA output for printing</title>  #  Our ssi max retry count.
 </head>  #
 <body bgcolor="FFFFFF">  
 <form method="post" enctype="multipart/form-data" action="/adm/printout" name="printform">  my $ssi_retry_count = 5; # Some arbitrary value.
 <tt>$ENV{'form.postdata'}</tt><p>  
 <h1>What do you want to print? Make a choice.</h1><br />  
 ENDHEADER  #  Font size:
   
   my $font_size = 'normalsize'; # Default is normalsize...
   
   
   # Fetch the contents of a resource, uninterpreted.
   # This is used here to fetch a latex file to be included
   # verbatim into the printout<
   # NOTE: Ask Guy if there is a lonnet function similar to this?
   #
   # Parameters:
   #   URL of the file
   #
   sub fetch_raw_resource {
       my ($url) = @_;
   
       my $filename  = &Apache::lonnet::filelocation("", $url);
       my $contents  = &Apache::lonnet::getfile($filename);
   
       if ($contents == -1) {
    return "File open failed for $filename";      # This will bomb the print.
       }
       return $contents;
   
       
 }  }
   
   #  Fetch the annotations associated with a URL and 
   #  put a centered 'annotations:' title.
   #  This is all suppressed if the annotations are empty.
   #
   sub annotate {
       my ($symb) = @_;
   
 sub menu_for_output {      my $annotation_text = &Apache::loncommon::get_annotation($symb, 1);
     my $r = shift;  
     $r->print(<<ENDMENUOUT1);  
 <input type="hidden" name="phase" value="two">      my $result = "";
 <input type="hidden" name="url" value="$ENV{'form.postdata'}">  
 <input type="radio" name="choice" value="Standard LaTeX output for current document" checked>  Current document      if (length($annotation_text) > 0) {
 (you will print what you see on the screen)<br />   $result .= '\\hspace*{\\fill} \\\\[\\baselineskip] \textbf{Annotations:} \\\\ ';
 <input type="radio" name="choice" value="Standard LaTeX output for the primary sequence">  All problems from the primary sequence<br />   $result .= "\n";
 <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 />   $result .= &Apache::lonxml::latex_special_symbols($annotation_text,""); # Escape latex.
 <input type="radio" name="choice" value="Standard LaTeX output for the top level sequence">  All problems from the top level sequence<br />   $result .= "\n\n";
 <br />      }
 ENDMENUOUT1      return $result;
     my $subdirtoprint = &Apache::lonnet::filelocation("",$ENV{'form.url'});  
     $subdirtoprint =~ s/\/[^\/]+$//;  
     if (&Apache::lonnet::allowed('bre',$subdirtoprint) eq 'F') {  
  $r->print(<<ENDMENUOUT2);  
 <input type="radio" name="choice" value="Subdirectory print">  All problems from current subdirectory (where this particular problem is)<br />  
 ENDMENUOUT2  
 }  
     $r->print(<<ENDMENUOUT3);  
 <br /><hr /><br />  
 <h1>And what page format do you prefer?</h1>  
 <table>  
  <tr>  
    <td>  
      <input type="radio" name="layout" value="CBI"> Landscape <br />  
      <input type="radio" name="layout" value="CAPA" checked>  Portrait <br />  
    </td>  
    <td>&nbsp;</td>  
    <td rawspan="2">  
      Number of columns: <input type="text" size="2" name="numberofcolumns" value="2">   
    </td>  
  </tr>  
 </table>  
 </br>   
 <input type="submit" value="Submit your choice">  
 </form>  
 </body>  
 </html>  
 ENDMENUOUT3  
 }  }
   
   #
   #   Set a global document font size:
   #   This is done by replacing \begin{document}
   #   with \begin{document}{\some-font-directive
   #   and \end{document} with
   #   }\end{document
   #
   sub set_font_size {
   
       my ($text) = @_;
   
       $text =~ s/\\begin{document}/\\begin{document}{\\$font_size/;
       $text =~ s/\\end{document}/}\\end{document}/;
       return $text;
   
 sub output_data {  
     my $r = shift;  
     $r->print(<<ENDPART);  
 <html>  
 <head>  
 <title>LON-CAPA output for printing</title>  
 </head>  
 <body bgcolor="FFFFFF">  
 <hr>  
 ENDPART  
   
     my $choice = $ENV{'form.choice'};  }
     my $layout = $ENV{'form.layout'};  
     my $numberofcolumns = $ENV{'form.numberofcolumns'};                 # include_pdf - PDF files are included into the 
     my $laystyle = 'book';  # output as follows:
     my $result = '';  #  - The PDF, if necessary, is replicated.
     my $number_of_columns = 1;  #  - The PDF is added to the list of files to convert to postscript (along with the images).
    #  - The LaTeX is added to include the final converted postscript in the file as an included
     if ($choice eq 'Standard LaTeX output for current document') {  #    job.  The assumption is that the includedpsheader.ps header will be included.
       #-- single document - problem, page, html, xml    #
       my %moreenv;  # Parameters:
       $moreenv{'form.grade_target'}='tex';  #   pdf_uri   - URI of the PDF file to include.
       $moreenv{'request.filename'}=$ENV{'form.url'};  #   
       &Apache::lonnet::appenv(%moreenv);  # Returns:
       my $texversion=&Apache::lonnet::ssi($ENV{'form.url'});  #  The LaTeX to include.
       &Apache::lonnet::delenv('form.grade_target');  #
       $result .= $texversion;  # Assumptions:
       $result = &additional_cleanup($result);  #    The uri is actually a PDF file
       if ($ENV{'form.url'}=~m/\.page\s*$/) {($result,$number_of_columns) = &page_cleanup($result);}  #    The postscript will have the includepsheader.ps included.
     } elsif ($choice eq 'Standard LaTeX output for the primary sequence' or $choice eq 'Standard LaTeX output for whole primary sequence') {  #
       #-- minimal sequence to which the current document belongs  #
         #-- where is the primary sequence containing file?  sub include_pdf {
  my $symbolic = &Apache::lonnet::symbread($ENV{'form.url'});      my ($pdf_uri) = @_;
  $_ = $symbolic;  
  m/([^_]+)_/;      # Where is the file? If not local we'll need to repcopy it:'
  my $primary_sequence = '/res/'.$1;  
         #-- open and analyses the primary sequence      my $file = &Apache::lonnet::filelocation('', $pdf_uri);
  my $sequence_file=&Apache::lonnet::filelocation("",$primary_sequence);      if (! -e $file) {
  my $sequencefilecontents=&Apache::lonnet::getfile($sequence_file);   &Apache::lonnet::repcopy($file);
  my @master_seq = &content_map($sequencefilecontents);   $file = &Apache::lonnet::filelocation('',$pdf_uri);
         #-- produce an output string      }
  for (my $i=0;$i<=$#master_seq;$i++) {  
     $_ = $master_seq[$i];      #  The file isn ow replicated locally.. or it did not exist in the first place
     m/\"(.*)\"/;      # (unlikely).  If it did exist, add the pdf to the set of files/images that
             $_ = $1;      # need tob e converted for this print job:
             my $urlp = $1;  
     if ($choice eq 'Standard LaTeX output for the primary sequence') {      $file =~ s|(.*)/res/|/home/httpd/html/res/|;
  if ($urlp =~ m/\.(problem|exam|quiz|assess|survey|form|library)/) {  
     my %moreenv;      open(FILE,">>/home/httpd/prtspool/$env{'user.name'}_$env{'user.domain'}_printout.dat");
     $moreenv{'form.grade_target'}='tex';      print FILE ("$file\n");
     &Apache::lonnet::appenv(%moreenv);      close (FILE);
     my $texversion=&Apache::lonnet::ssi($urlp);  
     &Apache::lonnet::delenv('form.grade_target');      # Construct the special to put out.  To do this we need to get the
     $result .= $texversion;              # resulting filename after conversion.  The file will have the same name
  }      # but will be in the user's spool directory with converted images.
     } else {  
  my %moreenv;      my $dirname = "/home/httpd/prtspool/$env{'user.name'}/";
  $moreenv{'form.grade_target'}='tex';      my ( $base, $path,  $ext) = &fileparse($file, '.pdf');
  &Apache::lonnet::appenv(%moreenv);  #    my $destname = $dirname.'/'.$base.'.eps'; # Not really an eps but easier in printout.pl
  my $texversion=&Apache::lonnet::ssi($urlp);      $base =~ s/ /\_/g;
  &Apache::lonnet::delenv('form.grade_target');  
  $result .= $texversion;      
     }      my $output = &print_latex_header();
  }      $output    .= '\special{ps: _begin_job_ ('
  $result = &additional_cleanup($result);   .$base.'.pdf.eps'.
     }  elsif ($choice eq 'Standard LaTeX output for the top level sequence') {   ')run _end_job_}';
  my @master_seq = ();  
  my @add_file_seq = ();      return $output;
 #-- where is the main sequence of the course?  
  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);  
 #-- do we have any other sequence inside?  #
  my $i=0;  #   ssi_with_retries- Does the server side include of a resource.
  while ($i<=$#file_seq) {  #                      if the ssi call returns an error we'll retry it up to
     $_ = $file_seq[$i];  #                      the number of times requested by the caller.
     if (/\.sequence$/) {  #                      If we still have a proble, no text is appended to the
  $file = &Apache::lonnet::filelocation("",$file_seq[$i]);  #                      output and we set some global variables.
  $filecontents=&Apache::lonnet::getfile($file);  #                      to indicate to the caller an SSI error occurred.  
  @add_file_seq = &content_map($filecontents);  #                      All of this is supposed to deal with the issues described
  splice(@file_seq,$i,1,@add_file_seq);  #                      in LonCAPA BZ 5631 see:
  @add_file_seq = ();  #                      http://bugs.lon-capa.org/show_bug.cgi?id=5631
  $i = -1;  #                      by informing the user that this happened.
   #
   # Parameters:
   #   resource   - The resource to include.  This is passed directly, without
   #                interpretation to lonnet::ssi.
   #   form       - The form hash parameters that guide the interpretation of the resource
   #                
   #   retries    - Number of retries allowed before giving up completely.
   # Returns:
   #   On success, returns the rendered resource identified by the resource parameter.
   # Side Effects:
   #   The following global variables can be set:
   #    ssi_error                - If an unrecoverable error occurred this becomes true.
   #                               It is up to the caller to initialize this to false
   #                               if desired.
   #    ssi_last_error_resource  - If an unrecoverable error occurred, this is the value
   #                               of the resource that could not be rendered by the ssi
   #                               call.
   #    ssi_last_error           - The error string fetched from the ssi response
   #                               in the event of an error.
   #
   sub ssi_with_retries {
       my ($resource, $retries, %form) = @_;
   
       my $target = $form{'grade_target'};
       my $aom    = $form{'answer_output_mode'};
   
   
   
       my ($content, $response) = &Apache::loncommon::ssi_with_retries($resource, $retries, %form);
       if (!$response->is_success) {
    $ssi_error               = 1;
    $ssi_last_error_resource = $resource;
    $ssi_last_error          = $response->code . " " . $response->message;
           $content='\section*{!!! An error occurred !!!}';
    &Apache::lonnet::logthis("Error in SSI resource: $resource Error: $ssi_last_error");
       }
   
       return $content;
   
   }
   
   sub get_student_view_with_retries {
       my ($curresline,$retries,$username,$userdomain,$courseid,$target,$moreenv)=@_;
   
       my ($content, $response) = &Apache::loncommon::get_student_view_with_retries($curresline,$retries,$username,$userdomain,$courseid,$target,$moreenv);
       if (!$response->is_success) {
           $ssi_error               = 1;
           $ssi_last_error_resource = $curresline.' for user '.$username.':'.$userdomain;
           $ssi_last_error          = $response->code . " " . $response->message;
           $content='\section*{!!! An error occurred !!!}';
           &Apache::lonnet::logthis("Error in SSI (student view) resource: $curresline Error: $ssi_last_error User: $username:$userdomain");
       }
       return $content;
   
   }
   
   #
   #   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. \\\  
   
   
       if ($subst =~ /\\$/) {
    $subst .= " ";
     }      }
     $i++;  
  }   }
  @master_seq = @file_seq;   my $item_pos = pos($format_string);
 #-- produce an output string   $result .= substr($format_string, 0, $item_pos - length($size) -2) . $subst;
  for (my $i=0;$i<=$#master_seq;$i++) {          $format_string = substr($format_string, pos($format_string));
     $_ = $master_seq[$i];      }
     m/\"(.*)\"/;  
             $_ = $1;      # Put the residual format string into the result:
             my $urlp = $1;  
             if (/\.(problem|exam|quiz|assess|survey|form|library)/) {      $result .= $format_string;
  my %moreenv;  
  $moreenv{'form.grade_target'}='tex';      return $result;
  &Apache::lonnet::appenv(%moreenv);  }
  my $texversion=&Apache::lonnet::ssi($urlp);  
  &Apache::lonnet::delenv('form.grade_target');  
  $result .= $texversion;          # Format a header according to a format.  
     }  # 
  }      
  $result = &additional_cleanup($result);  # Substitutions:
     } elsif ($choice eq 'Subdirectory print') {        #     %a    - Assignment name.
  my $subdirtoprint = &Apache::lonnet::filelocation("",$ENV{'form.url'});  #     %c    - Course name.
  $subdirtoprint =~ s/\/[^\/]+$//;  #     %n    - Student name.
  my @list_of_files = ();  #     %s    - The section if it is supplied.
  my $localdirectory = $subdirtoprint;  #
  $localdirectory =~ s/.*(\/res\/)/$1/;  sub format_page_header {
  my @content_directory = &Apache::lonnet::dirlist($localdirectory);      my ($width, $format, $assignment, $course, $student, $section) = @_;
  for (my $iy=0;$iy<=$#content_directory;$iy++) {  
     my @tempo_array = split(/&/,$content_directory[$iy]);      
     $content_directory[$iy] = $tempo_array[0];      $width = &recalcto_mm($width); # Get width in mm.
     if ($content_directory[$iy] =~ m/^[^\.]+\.problem$/) {      #  Default format?
  push @list_of_files,$content_directory[$iy];  
       if ($format eq '') {
    # For the default format, we may need to truncate
    # elements..  To do this we need to get the page width.
    # we assume that each character is about 2mm in width.
    # (correct for the header text size??).  We ignore
    # any formatting (e.g. boldfacing in this).
    # 
    # - Allow the student/course to be one line.
    #   but only truncate the course.
    # - Allow the assignment to be 2 lines (wrapped).
    #
    my $chars_per_line = $width/2; # Character/textline.
   
   
   
    my $name_length    = int($chars_per_line *3 /4);
    my $sec_length     = int($chars_per_line / 5);
   
    $format  = "%$name_length".'n';
   
    if ($section) {
       $format .=  ' - Sec: '."%$sec_length".'s';
    }
   
    $format .= '\\\\%c \\\\ %a';
           
   
       }
       # 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);
       $format =  &printf_style_subst("s", $format, $section);
       
       
       # 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!!!
       
       # If the user has role author, $course and $assignment are empty so
       # there is '\\ \\ ' in the page header. That's cause a error in LaTeX
       if($format =~ /\\\\\s\\\\\s/) {
           #TODO find sensible caption for page header
           my $testPrintout = '\\\\'.&mt('Construction Space').' \\\\'.&mt('Test-Printout ');
           $format =~ s/\\\\\s\\\\\s/$testPrintout/;
       }
       
   
       return $format;
       
   }
   
   #
   #   Convert a numeric code to letters
   #
   sub num_to_letters {
       my ($num) = @_;
       my @nums= split('',$num);
       my @num_to_let=('A'..'Z');
       my $word;
       foreach my $digit (@nums) { $word.=$num_to_let[$digit]; }
       return $word;
   }
   #   Convert a letter code to numeric.
   #
   sub letters_to_num {
       my ($letters) = @_;
       my @letters = split('', uc($letters));
      my %substitution;
       my $digit = 0;
       foreach my $letter ('A'..'J') {
    $substitution{$letter} = $digit;
    $digit++;
       }
       #  The substitution is done as below to preserve leading
       #  zeroes which are needed to keep the code size exact
       #
       my $result ="";
       foreach my $letter (@letters) {
    $result.=$substitution{$letter};
       }
       return $result;
   }
   
   #  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;
   }
   
   #   Determine if a code entered by the user in a helper is valid.
   #   valid depends on the code type and the type of code selected.
   #   The type of code selected can either be numeric or 
   #   Alphabetic.  If alphabetic, the code, in fact is a simple
   #   substitution cipher for the actual numeric code: 0->A, 1->B ...
   #   We'll be nice and be case insensitive for alpha codes.
   # 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.
       my @lines = &Apache::grades::get_scantronformat_file();
       foreach my $line (@lines) {
    my ($name, $type, $length) = (split(/:/, $line))[0,2,4];
    if($name eq $code_option) {
       $code_length = $length;
       if($type eq 'number') {
    $code_type = 'number';
     }      }
  }   }
  $localdirectory =~ s/\/$//;      }
  for (my $i=0;$i<=$#list_of_files;$i++) {      my $valid;
     my $urlp = $localdirectory.'/'.$list_of_files[$i];           if ($code_type eq 'number') {
     my %moreenv;   return &is_valid_numeric_code($code_value, $code_length);
     $moreenv{'form.grade_target'}='tex';      } else {
     &Apache::lonnet::appenv(%moreenv);   return &is_valid_alpha_code($code_value, $code_length);
     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;     
  }  
  $result = &additional_cleanup($result);  
   
   
   
   }
   
   #   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}';
       }
       return $text;
   }
   #
   #  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 {
    # Error!!!!
   
    croak "bad SPLIT_PDFS: $split_pdf in lonprintout::adjust_number_to_print";
   
     }      }
 #-- corrections for the different page formats  }
     if ($layout eq 'CBI' and $numberofcolumns eq '1') {  
     } elsif ($layout eq 'CBI' and $numberofcolumns eq '2') {  
  $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}/;  sub character_chart {
         $laystyle = 'album';      my $result = shift;
     } elsif ($layout eq 'CAPA') {      return  &Apache::entities::replace_entities($result);
         my $courseidinfo = $ENV{'request.role'};  }
         $_ = $courseidinfo;  
         m/.*\/(.*)/;  sub old_character_chart {
         $courseidinfo = $ENV{'course.physnet_'.$1.'.description'};      my $result = shift;
 # $result =~ s/\\documentclass\[letterpaper\]{article}/\\documentclass\[twocolumn\]{article}/;      $result =~ s/&\#0?0?(7|9);//g;
  $result =~ s/\\documentclass\[letterpaper\]{article}/\\documentclass{article}/;      $result =~ s/&\#0?(10|13);//g;
  $result =~ s/\\begin{document}/\\textheight 25\.9cm\\oddsidemargin = -0\.57in\\evensidemargin = -0\.57in\\textwidth= 9cm\\newlength{\\minipagewidth}\\setlength{\\minipagewidth}{\\textwidth\/$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 /;      $result =~ s/&\#0?32;/ /g;
  $result =~ s/\\includegraphics{/\\includegraphics\[width=9\.0 cm\]{/g;      $result =~ s/&\#0?33;/!/g;
 # $result =~ s/\\includegraphics{/\\includegraphics\[width=\\textwidth\]{/g;      $result =~ s/&(\#0?34|quot);/\"/g;
 # $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/;      $result =~ s/&\#0?35;/\\\#/g;
  $result =~ s/(\\end{document})/\\newline\\noindent\\makebox\[\\textwidth\/$number_of_columns\]\[b\]{\\hrulefill}\\newline\\noindent\\tiny Dept\. of Physics and Astronomy, MSU\\makebox\[1.5cm\]\[b\]{\\hfill}LON-CAPA\\copyright MSU GNU\/GPL $1/;      $result =~ s/&\#0?36;/\\\$/g;
 #        $result =~ s/(\\end{longtable}\s*)(\\newline\\noindent\\makebox\[9\.0cm\]\[b\]{\\hrulefill})/$2$1/g;      $result =~ s/&\#0?37;/\\%/g; 
         $result =~ s/(\\end{longtable}\s*)(\\newline\\noindent\\makebox\[\\textwidth\/$number_of_columns\]\[b\]{\\hrulefill})/$2$1/g;      $result =~ s/&(\#0?38|amp);/\\&/g; 
         $result =~ s/(\\end{longtable}\s*)\\newline/$1/g;      $result =~ s/&\#(0?39|146);/\'/g;
  $result =~ s/\$number_of_columns/$number_of_columns/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|130);/,/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|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);/\\"\{\} /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);/\\'\{\} /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;
   
       # Left/right quotations:
   
       $result =~ s/&(ldquo|#8220);/\`\`/g;
       $result =~ s/&(rdquo|#8221);/\'\'/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','0.394 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' => ['3.66 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 cm','-2.11 cm','-1.27 cm']
    },
    'album' => {
        '1' => ['21.59 cm','19.558 cm','-1.397cm','-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');
    my $sec = $env{'request.course.sec'};
       
       }
       return $courseidinfo;
   }
   
   sub page_format_transformation {
       my ($papersize,$layout,$numberofcolumns,$choice,$text,$assignment,$tableofcontents,$indexlist,$selectionmade) = @_; 
       my ($textwidth,$textheight,$oddoffset,$evenoffset,$topmargin);
   
       if ($selectionmade eq '4') {
    if ($choice eq 'all_problems') {
               $assignment=&mt('Problems from the Whole Course');
    } else {
               $assignment=&mt('Resources from the Whole Course');
    }
       } else {
    $assignment=&Apache::lonxml::latex_special_symbols($assignment,'header');
       }
       ($textwidth,$textheight,$oddoffset,$evenoffset,$topmargin) = &page_format($papersize,$layout,$numberofcolumns,$topmargin);
   
   
       my $name = &get_name();
       my $courseidinfo = &get_course();
       my $header_text  = $parmhash{'print_header_format'};
       $header_text     = &format_page_header($textwidth, $header_text, $assignment,
      $courseidinfo, $name);
       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}";
       }
       if ($layout eq 'album') {
       $text =~ s/\\begin{document}/\\setlength{\\oddsidemargin}{$oddoffset}\\setlength{\\evensidemargin}{$evenoffset}$topmargintoinsert\n\\setlength{\\textwidth}{$textwidth}\\setlength{\\textheight}{$textheight}\\setlength{\\textfloatsep}{8pt plus 2\.0pt minus 4\.0pt}\n\\newlength{\\minipagewidth}\\setlength{\\minipagewidth}{\\textwidth\/\$number_of_columns-0\.2cm}\\usepackage{fancyhdr}\\addtolength{\\headheight}{\\baselineskip}\n\\pagestyle{fancy}$fancypagestatement\\usepackage{booktabs}\\begin{document}\\voffset=-0\.8 cm\\setcounter{page}{1}\n /;
       } elsif ($layout eq 'book') {
    if ($choice ne 'All class print') { 
       $text =~ s/\\begin{document}/\\textheight $textheight\\oddsidemargin = $evenoffset\\evensidemargin = $evenoffset $topmargintoinsert\n\\textwidth= $textwidth\\newlength{\\minipagewidth}\\setlength{\\minipagewidth}{\\textwidth\/\$number_of_columns-0\.2cm}\n\\renewcommand{\\ref}{\\keephidden\}\\usepackage{fancyhdr}\\addtolength{\\headheight}{\\baselineskip}\\pagestyle{fancy}$fancypagestatement\\usepackage{booktabs}\\begin{document}\n\\voffset=-0\.8 cm\\setcounter{page}{1}\n/;
    } else {
       $text =~ s/\\pagestyle{fancy}\\rhead{}\\chead{}\s*\\begin{document}/\\textheight = $textheight\\oddsidemargin = $evenoffset\n\\evensidemargin = $evenoffset $topmargintoinsert\\textwidth= $textwidth\\newlength{\\minipagewidth}\n\\setlength{\\minipagewidth}{\\textwidth\/\$number_of_columns-0\.2cm}\\renewcommand{\\ref}{\\keephidden\}\\pagestyle{fancy}\\rhead{}\\chead{}\\usepackage{booktabs}\\begin{document}\\voffset=-0\.8cm\n\\setcounter{page}{1}  \\vskip 5 mm\n /;
    }
    if ($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 page_cleanup {
       my $result = shift;
    
       $result =~ m/\\end{document}(\d*)$/;
       my $number_of_columns = $1;
       my $insert = '{';
       for (my $id=1;$id<=$number_of_columns;$id++) { $insert .='l'; }
       $insert .= '}';
       $result =~ s/(\\begin{longtable})INSERTTHEHEADOFLONGTABLE\\endfirsthead\\endhead/$1$insert/g;
       $result =~ s/&\s*REMOVETHEHEADOFLONGTABLE\\\\/\\\\/g;
       return $result,$number_of_columns;
   }
   
   
   sub details_for_menu {
       my ($helper)=@_;
       my $postdata=$env{'form.postdata'};
       if (!$postdata) { $postdata=$helper->{VARS}{'postdata'}; }
       my $name_of_resource = &Apache::lonnet::gettitle($postdata);
       my $symbolic = &Apache::lonnet::symbread($postdata);
       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);
   }
   
   sub copyright_line {
       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 } ';
   }
   my $end_of_student = "\n".'\special{ps:ENDOFSTUDENTSTAMP}'."\n";
   
   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       #-- LaTeX corrections     
     my $first_comment = index($result,'<!--',0);      my $first_comment = index($result,'<!--',0);
     while ($first_comment != -1) {      while ($first_comment != -1) {
Line 276  ENDPART Line 1192  ENDPART
  $first_comment = index($result,'<!--',$first_comment);   $first_comment = index($result,'<!--',$first_comment);
     }      }
     $result =~ s/^\s+$//gm; #remove empty lines      $result =~ s/^\s+$//gm; #remove empty lines
     $result =~ s/%/\\%/g;   #corrects %      #removes more than one empty space
     $result =~ s/(\s)+/$1/g; #removes more than one empty space      $result =~ s|(\s\s+)|($1=~/[\n\r]/)?"\n":" "|ge;
     $result =~ s/\\\\\s*\\vskip/\\vskip/gm;      $result =~ s/\\\\\s*\\vskip/\\vskip/gm;
     $result =~ s/ (<|>|) / \$$1\$ /g; #corrects < or >  
     $result =~ s/\\\\\s*\\noindent\s*(\\\\)+/\\\\\\noindent /g;      $result =~ s/\\\\\s*\\noindent\s*(\\\\)+/\\\\\\noindent /g;
     $result =~ s/{\\par }\s*\\\\/\\\\/gm;      $result =~ s/{\\par }\s*\\\\/\\\\/gm;
  $result =~ s/\\\\\s+\[/ \[/g;      $result =~ s/\\\\\s+\[/ \[/g;
     $result =~ s/&#952;/\$\\theta\$/g; #converts theta from html into tex  
     $result =~ s/\b_+\b/\\makebox\[1 cm\]\[b\]{\\hrulefill}/g;  
     #conversion of html characters to LaTeX equivalents      #conversion of html characters to LaTeX equivalents
     if ($result =~ m/&(\w+|#\d+);/) {      if ($result =~ m/&(\w+|#\d+);/) {
  $result = &character_chart($result);   $result = &character_chart($result);
     }      }
 #-- writing .tex file in prtspool       $result =~ s/(\\end{tabular})\s*\\vskip 0 mm/$1/g;
     my $temp_file;      $result =~ s/(\\begin{enumerate})\s*\\noindent/$1/g;
     my $filename = "/home/httpd/prtspool/$ENV{'user.name'}_$ENV{'user.domain'}_printout_".time."_".rand(10000000).".tex";      return $result;
     unless ($temp_file = Apache::File->new('>'.$filename)) {  
  $r->log_error("Couldn't open $filename for output $!");  
  return SERVER_ERROR;   
     }   
     print $temp_file $result;  
 $r->print(<<FINALEND);  
 <meta http-equiv="Refresh" content="0; url=/cgi-bin/printout.pl?$filename&$laystyle">  
 </body>  
 </html>  
 FINALEND  
 }  }
   
 sub character_chart {  
     my $result = shift;  sub index_table {
     $result =~ s/&#009;//g;      my $currentURL = shift;
     $result =~ s/&#010;//g;      my $insex_string='';
     $result =~ s/&#013;//g;      $currentURL=~s/\.([^\/+])$/\.$1\.meta/;
     $result =~ s/&#032;/ /g;      $insex_string=&Apache::lonnet::metadata($currentURL,'keywords');
     $result =~ s/&#033;/!/g;      return $insex_string;
     $result =~ s/&#034;/"/g;  }
     $result =~ s/&quot;/"/g; #"  
     $result =~ s/&#035;/\\#/g;  
     $result =~ s/&#036;/\\\$/g;  sub IndexCreation {
     $result =~ s/&#037;/\\%/g;       my ($texversion,$currentURL)=@_;
     $result =~ s/&#038;/\\&/g;       my @key_words=split(/,/,&index_table($currentURL));
     $result =~ s/&amp;/\\&/g;      my $chunk='';
     $result =~ s/&#039;/'/g;      my $st=index $texversion,'\addcontentsline{toc}{subsection}{';
     $result =~ s/&#040;/(/g;      if ($st>0) {
     $result =~ s/&#041;/)/g;   for (my $i=0;$i<3;$i++) {$st=(index $texversion,'}',$st+1);}
     $result =~ s/&#042;/\*/g;   $chunk=substr($texversion,0,$st+1);
     $result =~ s/&#043;/\+/g;   substr($texversion,0,$st+1)=' ';
     $result =~ s/&#044;/,/g;      }
     $result =~ s/&#045;/-/g;      foreach my $key_word (@key_words) {
     $result =~ s/&#046;/\./g;   if ($key_word=~/\S+/) {
     $result =~ s/&#047;/\//g;      $texversion=~s/\b($key_word)\b/$1 \\index{$key_word} /i;
     $result =~ s/&#048;/0/g;   }
     $result =~ s/&#049;/1/g;      }
     $result =~ s/&#050;/2/g;      if ($st>0) {substr($texversion,0,1)=$chunk;}
     $result =~ s/&#051;/3/g;      return $texversion;
     $result =~ s/&#052;/4/g;  }
     $result =~ s/&#053;/5/g;  
     $result =~ s/&#054;/6/g;  sub print_latex_header {
     $result =~ s/&#055;/7/g;      my $mode=shift;
     $result =~ s/&#056;/8/g;  
     $result =~ s/&#057;/9/g;      return &Apache::londefdef::latex_header($mode);
     $result =~ s/&#058;/:/g;  }
     $result =~ s/&#059;/;/g;  
     $result =~ s/&#060;/\$<\$/g;  sub path_to_problem {
     $result =~ s/&lt;/\$<\$/g;      my ($urlp,$colwidth)=@_;
     $result =~ s/&#061;/\$=\$/g;      $urlp=&Apache::lonnet::clutter($urlp);
     $result =~ s/&#062;/\$>\$/g;  
     $result =~ s/&gt;/\$>\$/g;      my $newurlp = '';
     $result =~ s/&#063;/?/g;      $colwidth=~s/\s*mm\s*$//;
 #    $result =~ s/&#064;//g;  #characters average about 2 mm in width
     $result =~ s/&#065;/A/g;      if (length($urlp)*2 > $colwidth) {
     $result =~ s/&#066;/B/g;   my @elements = split('/',$urlp);
     $result =~ s/&#067;/C/g;   my $curlength=0;
     $result =~ s/&#068;/D/g;   foreach my $element (@elements) {
     $result =~ s/&#069;/E/g;      if ($element eq '') { next; }
     $result =~ s/&#070;/F/g;      if ($curlength+(length($element)*2) > $colwidth) {
     $result =~ s/&#071;/G/g;   $newurlp .=  '|\vskip -1 mm \verb|';
     $result =~ s/&#072;/H/g;   $curlength=length($element)*2;
     $result =~ s/&#073;/I/g;      } else {
     $result =~ s/&#074;/J/g;   $curlength+=length($element)*2;
     $result =~ s/&#075;/K/g;      }
     $result =~ s/&#076;/L/g;      $newurlp.='/'.$element;
     $result =~ s/&#077;/M/g;   }
     $result =~ s/&#078;/N/g;      } else {
     $result =~ s/&#079;/O/g;   $newurlp=$urlp;
     $result =~ s/&#080;/P/g;      }
     $result =~ s/&#081;/Q/g;      return '{\small\noindent\verb|'.$newurlp.'|\vskip 0 mm}';
     $result =~ s/&#082;/R/g;  }
     $result =~ s/&#083;/S/g;  
     $result =~ s/&#084;/T/g;  sub recalcto_mm {
     $result =~ s/&#085;/U/g;      my $textwidth=shift;
     $result =~ s/&#086;/V/g;      my $LaTeXwidth;
     $result =~ s/&#087;/W/g;      if ($textwidth=~/(-?\d+\.?\d*)\s*cm/) {
     $result =~ s/&#088;/X/g;   $LaTeXwidth = $1*10;
     $result =~ s/&#089;/Y/g;      } elsif ($textwidth=~/(-?\d+\.?\d*)\s*mm/) {
     $result =~ s/&#090;/Z/g;   $LaTeXwidth = $1;
     $result =~ s/&#091;/[/g;      } elsif ($textwidth=~/(-?\d+\.?\d*)\s*in/) {
     $result =~ s/&#092;/\\/g;   $LaTeXwidth = $1*25.4;
     $result =~ s/&#093;/]/g;      }
 #    $result =~ s/&#094;//g;      $LaTeXwidth.=' mm';
 #    $result =~ s/&#095;//g;      return $LaTeXwidth;
     $result =~ s/&#096;/`/g;  }
     $result =~ s/&#097;/a/g;  
     $result =~ s/&#098;/b/g;  sub get_textwidth {
     $result =~ s/&#099;/c/g;      my ($helper,$LaTeXwidth)=@_;
     $result =~ s/&#100;/d/g;      my $textwidth=$LaTeXwidth;
     $result =~ s/&#101;/e/g;      if ($helper->{'VARS'}->{'pagesize.width'}=~/\d+/ &&
     $result =~ s/&#102;/f/g;   $helper->{'VARS'}->{'pagesize.widthunit'}=~/\w+/) {
     $result =~ s/&#103;/g/g;   $textwidth=&recalcto_mm($helper->{'VARS'}->{'pagesize.width'}.' '.
     $result =~ s/&#104;/h/g;   $helper->{'VARS'}->{'pagesize.widthunit'});
     $result =~ s/&#105;/i/g;      }
     $result =~ s/&#106;/j/g;      return $textwidth;
     $result =~ s/&#107;/k/g;  }
     $result =~ s/&#108;/l/g;  
     $result =~ s/&#109;/m/g;  
     $result =~ s/&#110;/n/g;  sub unsupported {
     $result =~ s/&#111;/o/g;      my ($currentURL,$mode,$symb)=@_;
     $result =~ s/&#112;/p/g;      if ($mode ne '') {$mode='\\'.$mode}
     $result =~ s/&#113;/q/g;      my $result.= &print_latex_header($mode);
     $result =~ s/&#114;/r/g;      if ($currentURL=~m|^(/adm/wrapper/)?ext/|) {
     $result =~ s/&#115;/s/g;   $currentURL=~s|^(/adm/wrapper/)?ext/|http://|;
     $result =~ s/&#116;/t/g;   my $title=&Apache::lonnet::gettitle($symb);
     $result =~ s/&#117;/u/g;   $title = &Apache::lonxml::latex_special_symbols($title);
     $result =~ s/&#118;/v/g;   $result.=' \strut \\\\ '.$title.' \strut \\\\ '.$currentURL.' ';
     $result =~ s/&#119;/w/g;      } else {
     $result =~ s/&#120;/x/g;   $result.=$currentURL;
     $result =~ s/&#121;/y/g;      }
     $result =~ s/&#122;/z/g;      $result.= '\vskip 0.5mm\noindent\makebox[\textwidth/$number_of_columns][b]{\hrulefill} \end{document}';
     $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;      return $result;
 }  }
   
 sub additional_cleanup {  #
     my $result = shift;  #  Map from helper layout style to the book/album:
     my $first_app = index($result,'\documentclass',0);  #
     $first_app = index($result,'\documentclass',$first_app+5);  sub map_laystyle {
     while ($first_app != -1) {      my ($laystyle) = @_;
  my $second_app = index($result,'begin{document}',$first_app);      if ($laystyle eq 'L') {
  $first_app = rindex($result,'\end{document}',$first_app);   $laystyle='album';
  substr($result,$first_app,$second_app-$first_app+15) = '\vskip 3 mm';      } else {
  $first_app = index($result,'\documentclass',$first_app+5);   $laystyle='book';
     }      }
       return $laystyle;
   }
   
   sub print_page_in_course {
       my ($helper, $rparmhash, $currentURL, $resources) = @_;
       my %parmhash       = %$rparmhash;
       my @page_resources = @$resources;
       my $mode = $helper->{'VARS'}->{'LATEX_TYPE'};
       my $symb = $helper->{'VARS'}->{'symb'};
   
   
       my $format_from_helper = $helper->{'VARS'}->{'FORMAT'};
   
   
       my @temporary_array=split /\|/,$format_from_helper;
       my ($laystyle,$numberofcolumns,$papersize,$pdfFormFields)=@temporary_array;
       $laystyle = &map_laystyle($laystyle);
       my ($textwidth,$textheight,$oddoffset,$evenoffset) = &page_format($papersize,$laystyle,
         $numberofcolumns);
       my $LaTeXwidth=&recalcto_mm($textwidth); 
   
   
       if ($mode ne '') {$mode='\\'.$mode}
       my $result.= &print_latex_header($mode);
       if ($currentURL=~m|^(/adm/wrapper/)?ext/|) {
    $currentURL=~s|^(/adm/wrapper/)?ext/|http://|;
    my $title=&Apache::lonnet::gettitle($symb);
    $title = &Apache::lonxml::latex_special_symbols($title);
       } else {
    $result.=$currentURL;
       }
       $result .= '\\\\';
   
       if ($helper->{'VARS'}->{'style_file'}=~/\w/) {
    &Apache::lonnet::appenv({'construct.style' =>
    $helper->{'VARS'}->{'style_file'}});
       } elsif ($env{'construct.style'}) {
    &Apache::lonnet::delenv('construct.style');
       }
   
       # First is the overall page description.  This is then followed by the 
       # components of the page. Each of which must be printed independently.
   
       my $the_page = shift(@page_resources); 
   
       foreach my $resource (@page_resources) {
    my $resource_src   = $resource->src(); # Essentially the URL of the resource.
    $result           .= $resource->title() . '\\\\';
   
    # Recurse if a .page:
   
    if ($resource_src =~ /.page$/i) {
       my $navmap         = Apache::lonnavmaps::navmap->new();
       my @page_resources = $navmap->retrieveResources($resource_src);
       $result           .= &print_page_in_course($helper, $rparmhash, 
          $resource_src, \@page_resources);
    }
    # these resources go through the XML transformer:
   
    elsif ($resource_src =~ /\.(problem|exam|quiz|assess|survey|form|library|page|xml|html|htm\xhtml|xhtm)$/)  {
       my $urlp = &Apache::lonnet::clutter($resource_src);
       my %form;
       my %moreenv;
   
       &Apache::lonxml::remember_problem_counter();
       $moreenv{'request.filename'}=$urlp;
       if ($helper->{'VARS'}->{'probstatus'} eq 'exam') {$form{'problemtype'}='exam';}
   
       $form{'grade_target'}  = 'tex';
       $form{'textwidth'}    = &get_textwidth($helper, $LaTeXwidth);
       $form{'pdfFormFiels'} = $pdfFormFields; # 
       $form{'showallfoils'} = $helper->{'VARS'}->{'showallfoils'};    
       
       $form{'problem_split'}=$parmhash{'problem_stream_switch'};
       $form{'suppress_tries'}=$parmhash{'suppress_tries'};
       $form{'latex_type'}=$helper->{'VARS'}->{'LATEX_TYPE'};
       $form{'print_discussions'}=$helper->{'VARS'}->{'PRINT_DISCUSSIONS'};
       $form{'print_annotations'}=$helper->{'VARS'}->{'PRINT_ANNOTATIONS'};
       if (($helper->{'VARS'}->{'PRINT_DISCUSSIONS'} eq 'yes') ||
    ($helper->{'VARS'}->{'PRINT_ANNOTATIONS'} eq 'yes')) {
    $form{'problem_split'}='yes';
       }
       my $rndseed = time;
       if ($helper->{'VARS'}->{'curseed'}) {
    $rndseed=$helper->{'VARS'}->{'curseed'};
       }
       $form{'rndseed'}=$rndseed;
       &Apache::lonnet::appenv(\%moreenv);
       
       &Apache::lonxml::clear_problem_counter();
   
       my $texversion = &ssi_with_retries($urlp, $ssi_retry_count, %form);
   
       # There seems to be an extraneous \vskip 1mm \\\\ :
   
       $texversion =~ s/^\\vskip 1mm \\\\\\\\//;
   
       # current document with answers.. no need to encap in minipage
       #  since there's only one answer.
   
       if(($helper->{'VARS'}->{'ANSWER_TYPE'} eq 'no') ||
          ($helper->{'VARS'}->{'ANSWER_TYPE'} eq 'only')) {
    my %answerform = %form;
   
   
    $answerform{'problem_split'}=$parmhash{'problem_stream_switch'};
    $answerform{'grade_target'}='answer';
    $answerform{'answer_output_mode'}='tex';
    $answerform{'rndseed'}=$rndseed;
                   if ($helper->{'VARS'}->{'probstatus'} eq 'exam') {
       $answerform{'problemtype'}='exam';
    }
    $resources_printed .= $urlp.':';
    my $answer=&ssi_with_retries($urlp,$ssi_retry_count, %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') {
    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 ';
    $texversion.=&path_to_problem($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}';
    }
   
   
   
   
       
       }
       # Print annotations.
   
   
       if ($helper->{'VARS'}->{'PRINT_ANNOTATIONS'} eq 'yes') {
    my $annotation .= &annotate($currentURL);
    $texversion =~ s/(\\keephidden{ENDOFPROBLEM})/$annotation$1/;
       }
       
       if ($helper->{'VARS'}->{'TABLE_INDEX'} eq 'yes') {
    $texversion=&IndexCreation($texversion,$currentURL);
       }
       if ($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,$numberofcolumns) = &page_cleanup($result);
       }
    }
       }
   
       $result.= '\vskip 0.5mm\noindent\makebox[\textwidth/$number_of_columns][b]{\hrulefill} \end{document}';
     return $result;      return $result;
 }  }
 sub page_cleanup {  
     my $result = shift;  
     $_ = $result;  #
     m/\\end{document}(\d*)$/;  # List of recently generated print files
     my $number_of_columns = $1;  #
     my $insert = '{';  sub recently_generated {
     for (my $id=1;$id<=$number_of_columns;$id++) { $insert .='l'; }      my $r=shift;
     $insert .= '}';      my $prtspool=$r->dir_config('lonPrtDir');
     $result =~ s/(\\begin{longtable})INSERTTHEHEADOFLONGTABLE/$1$insert/g;      my $zip_result;
     $result =~ s/&\s*REMOVETHEHEADOFLONGTABLE\\\\/\\\\/g;      my $pdf_result;
     $result =~ s/(\\vskip\s*\d+\s*mm)/}\\\\\\parbox{\\minipagewidth}{/g;      opendir(DIR,$prtspool);
     $result =~ s/\\parbox{\\minipagewidth}{}\s*\\\\\s*(\\parbox{\\minipagewidth})/$1/g;  
     $result =~ s/\\parbox{\\minipagewidth}{\s*\\\\\\\\/\\parbox{\\minipagewidth}{/g;      my @files = 
     return $result,$number_of_columns;   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 $ext_text = 'pdf' ? &mt('PDF File'):&mt('Zip File');
    my $result=&Apache::loncommon::start_data_table_row()
                     .'<td>'
                     .'<a href="/prtspool/'.$filename.'">'.$ext_text.'</a>'
                     .'</td>'
                     .'<td>'.&Apache::lonlocal::locallocaltime($cctime).'</td>'
                     .'<td align="right">'.$csize.'</td>'
                     .&Apache::loncommon::end_data_table_row();
    if ($ext eq 'pdf') { $pdf_result .= $result; }
    if ($ext eq 'zip') { $zip_result .= $result; }
       }
       if ($zip_result || $pdf_result) {
           $r->print('<hr />');
       }
       if ($zip_result) {
    $r->print('<h3>'.&mt('Recently generated printout zip files')."</h3>\n"
                     .&Apache::loncommon::start_data_table()
                     .&Apache::loncommon::start_data_table_header_row()
                     .'<th>'.&mt('Download').'</th>'
                     .'<th>'.&mt('Creation Date').'</th>'
                     .'<th>'.&mt('File Size (Bytes)').'</th>'
                     .&Apache::loncommon::end_data_table_header_row()
                     .$zip_result
                     .&Apache::loncommon::end_data_table()
           );
       }
       if ($pdf_result) {
    $r->print('<h3>'.&mt('Recently generated printouts')."</h3>\n"
                     .&Apache::loncommon::start_data_table()
                     .&Apache::loncommon::start_data_table_header_row()
                     .'<th>'.&mt('Download').'</th>'
                     .'<th>'.&mt('Creation Date').'</th>'
                     .'<th>'.&mt('File Size (Bytes)').'</th>'
                     .&Apache::loncommon::end_data_table_header_row()
                     .$pdf_result
                     .&Apache::loncommon::end_data_table()
           );
       }
   }
   
   #
   #   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;
 }  }
   
 sub content_map {  #  Output a sequence (recursively if neeed)
 #-- find a list of files to print  #  from construction space.
     my $map_string = shift;  # Parameters:
     my @number_seq = ();  #    url     = URL of the sequence to print.
     my @file_seq = ();  #    helper  - Reference to the helper hash.
     my $startlink = index($map_string,'<link',0);  #    form    - Copy of the format hash.
     my $endlink = index($map_string,'</link>',$startlink);  #    LaTeXWidth
     my $chunk = substr($map_string,$startlink,$endlink-$startlink+7);  # Returns:
     $_ = $chunk;  #   Text to add to the printout.
     m/from=\"(\d+)\"/;  #   NOTE if the first element of the outermost sequence
     push @number_seq,$1;  #   is itself a sequence, the outermost caller may need to
     while ($startlink != -1) {  #   prefix the latex with the page headers stuff.
  $endlink = index($map_string,'</link>',$startlink);  #
  $chunk = substr($map_string,$startlink,$endlink-$startlink+7);  sub print_construction_sequence {
  substr($map_string,$startlink,$endlink-$startlink+7) = '';      my ($currentURL, $helper, %form, $LaTeXwidth) = @_;
  $_ = $chunk;      my $result;
         m/to=\"(\d+)\"/;      my $rndseed=time;
  push @number_seq,$1;      if ($helper->{'VARS'}->{'curseed'}) {
  $startlink = index($map_string,'from="'.$1.'"',$startlink);   $rndseed=$helper->{'VARS'}->{'curseed'};
  $startlink = rindex($map_string,'<link ',$startlink);      }
     }      my $errtext=&LONCAPA::map::mapread($currentURL);
     my $stalink = index($map_string,' to="'.$number_seq[0].'"',$startlink);      # 
     while ($stalink != -1) {      #  These make this all support recursing for subsequences.
  $startlink = rindex($map_string,'<link ',$stalink);      #
  $endlink = index($map_string,'</link>',$startlink);      my @order    = @LONCAPA::map::order;
  $chunk = substr($map_string,$startlink,$endlink-$startlink+7);      my @resources = @LONCAPA::map::resources; 
  substr($map_string,$startlink,$endlink-$startlink+7) = '';      for (my $member=0;$member<=$#order;$member++) {
  $_ = $chunk;   $resources[$order[$member]]=~/^([^:]*):([^:]*):/;
         m/from=\"(\d+)\"/;   my $urlp=$2;
  unshift @number_seq,$1;   if ($urlp=~/\.(problem|exam|quiz|assess|survey|form|library|xml|html|htm|xhtml|xhtm)$/) {
  $stalink = index($map_string,' to="'.$number_seq[0].'"',0);      my $texversion='';
     }      if ($helper->{'VARS'}->{'ANSWER_TYPE'} ne 'only') {
     for (my $i=0;$i<=$#number_seq;$i++) {   $form{'problem_split'}=$parmhash{'problem_stream_switch'};
  $stalink = index($map_string,' id="'.$number_seq[$i].'"',0);   $form{'suppress_tries'}=$parmhash{'suppress_tries'};
         {       $form{'latex_type'}=$helper->{'VARS'}->{'LATEX_TYPE'};
     my $ahed1 = index($map_string,'src="',$stalink);   $form{'rndseed'}=$rndseed;
     my $ahed2 = index($map_string,'</resource>',$stalink);   $resources_printed .=$urlp.':';
     if ($ahed1 != -1) {   $texversion=&ssi_with_retries($urlp, $ssi_retry_count, %form);
  if ($ahed1 < $ahed2) {      }
     $startlink = $ahed1;      if((($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 $answer=&ssi_with_retries($urlp, $ssi_retry_count, %answerform);
    if ($helper->{'VARS'}->{'ANSWER_TYPE'} eq 'no') {
       $texversion=~s/(\\keephidden{ENDOFPROBLEM})/$answer$1/;
  } else {   } else {
     $startlink = rindex($map_string,'src="',$stalink);      # 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, 
    $LaTeXwidth);
       }
    }
    elsif ($urlp =~ /\.pdf$/i) {
       my $texversion;
       if ($member != 0) {
    $texversion .= '\cleardoublepage';
       }
   
       $texversion .= &include_pdf($urlp);
       $texversion = &latex_header_footer_remove($texversion);
       if ($member != $#order) {
    $texversion .= '\\ \cleardoublepage';
       }
       
       $result .= $texversion;
    }
       }
       if ($helper->{VARS}->{'construction'} eq '1') {$result=~s/(\\begin{document})/$1 \\fbox\{RANDOM SEED IS $rndseed\} /;}
       return $result;
   }
   
   sub output_data {
       my ($r,$helper,$rparmhash) = @_;
       my %parmhash = %$rparmhash;
       $ssi_error = 0; # This will be set nonzero by failing ssi's.
       $resources_printed = '';
       $font_size = $helper->{'VARS'}->{'fontsize'};
       my $do_postprocessing = 1;
       my $js = <<ENDPART;
   <script type="text/javascript">
       var editbrowser;
       function openbrowser(formname,elementname,only,omit) {
           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
   
   
       # Breadcrumbs
       #FIXME: Choose better/different breadcrumbs?!? Links?
       my $brcrum = [{'href' => '',
                      'text' => 'Helper'}, #FIXME: Different origin possible than print out helper?
                     {'href' => '',
                      'text' => 'Preparing Printout'}];
   
       my $start_page  = &Apache::loncommon::start_page('Preparing Printout',
                                                        $js,
                                                        {'bread_crumbs' => $brcrum,});
       my $msg = &mt('Please stand by while processing your print request, this may take some time ...');
   
       $r->print($start_page."\n<p>\n$msg\n</p>\n");
   
       # fetch the pagebreaks and store them in the course environment
       # The page breaks will be pulled into the hash %page_breaks which is
       # indexed by symb and contains 1's for each break.
   
       $env{'form.pagebreaks'}  = $helper->{'VARS'}->{'FINISHPAGE'};
       $env{'form.lastprinttype'} = $helper->{'VARS'}->{'PRINT_TYPE'}; 
       &Apache::loncommon::store_course_settings('print',
         {'pagebreaks'    => 'scalar',
          'lastprinttype' => 'scalar'});
   
       my %page_breaks  = &get_page_breaks($helper);
   
       my $format_from_helper = $helper->{'VARS'}->{'FORMAT'};
       my ($result,$selectionmade) = ('','');
       my $number_of_columns = 1; #used only for pages to determine the width of the cell
       my @temporary_array=split /\|/,$format_from_helper;
       my ($laystyle,$numberofcolumns,$papersize,$pdfFormFields)=@temporary_array;
   
       $laystyle = &map_laystyle($laystyle);
       my ($textwidth,$textheight,$oddoffset,$evenoffset) = &page_format($papersize,$laystyle,$numberofcolumns);
       my $assignment =  $env{'form.assignment'};
       my $LaTeXwidth=&recalcto_mm($textwidth); 
       my @print_array=();
       my @student_names=();
   
        
       #  Common settings for the %form has:
       # In some cases these settings get overriddent by specific cases, but the
       # settings are common enough to make it worthwhile factoring them out
       # here.
       #
       my %form;
       $form{'grade_target'} = 'tex';
       $form{'textwidth'}    = &get_textwidth($helper, $LaTeXwidth);
       $form{'pdfFormFields'} = $pdfFormFields;
   
       # If form.showallfoils is set, then request all foils be shown:
       # privilege will be enforced both by not allowing the 
       # check box selecting this option to be presnt unless it's ok,
       # and by lonresponse's priv. check.
       # The if is here because lonresponse.pm only cares that
       # showallfoils is defined, not what the value is.
   
       if ($helper->{'VARS'}->{'showallfoils'} eq "1") { 
    $form{'showallfoils'} = $helper->{'VARS'}->{'showallfoils'};
       }
       
       if ($helper->{'VARS'}->{'style_file'}=~/\w/) {
    &Apache::lonnet::appenv({'construct.style' =>
    $helper->{'VARS'}->{'style_file'}});
       } elsif ($env{'construct.style'}) {
    &Apache::lonnet::delenv('construct.style');
       }
   
   
       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/|
       && $cleanURL=~/\.(problem|exam|quiz|assess|survey|form|library|xml|html|htm|xhtml|xhtm)$/) {
       my $rndseed=time;
       my $texversion='';
       if ($helper->{'VARS'}->{'ANSWER_TYPE'} ne 'only') {
    my %moreenv;
    $moreenv{'request.filename'}=$cleanURL;
                   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'};
    $form{'print_annotations'}=$helper->{'VARS'}->{'PRINT_ANNOTATIONS'};
    if (($helper->{'VARS'}->{'PRINT_DISCUSSIONS'} eq 'yes') ||
       ($helper->{'VARS'}->{'PRINT_ANNOTATIONS'} eq 'yes')) {
       $form{'problem_split'}='yes';
    }
    if ($helper->{'VARS'}->{'curseed'}) {
       $rndseed=$helper->{'VARS'}->{'curseed'};
    }
    $form{'rndseed'}=$rndseed;
    &Apache::lonnet::appenv(\%moreenv);
   
    &Apache::lonxml::clear_problem_counter();
   
    $resources_printed .= $currentURL.':';
    $texversion.=&ssi_with_retries($currentURL,$ssi_retry_count, %form);
   
    #  Add annotations if required:
       
    &Apache::lonxml::clear_problem_counter();
   
    &Apache::lonnet::delenv('request.filename');
       }
       # current document with answers.. no need to encap in minipage
       #  since there's only one answer.
   
       if(($helper->{'VARS'}->{'ANSWER_TYPE'} eq 'no') ||
          ($helper->{'VARS'}->{'ANSWER_TYPE'} eq 'only')) {
    $form{'problem_split'}=$parmhash{'problem_stream_switch'};
    $form{'grade_target'}='answer';
    $form{'answer_output_mode'}='tex';
    $form{'rndseed'}=$rndseed;
                   if ($helper->{'VARS'}->{'probstatus'} eq 'exam') {
       $form{'problemtype'}='exam';
    }
    $resources_printed .= $currentURL.':';
    my $answer=&ssi_with_retries($currentURL,$ssi_retry_count, %form);
   
   
    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') {
    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}';
    }
   
   
   
   
       
       }
       # Print annotations.
   
   
       if ($helper->{'VARS'}->{'PRINT_ANNOTATIONS'} eq 'yes') {
    my $annotation .= &annotate($currentURL);
    $texversion =~ s/(\\keephidden{ENDOFPROBLEM})/$annotation$1/;
       }
   
   
       if ($helper->{'VARS'}->{'TABLE_INDEX'} eq 'yes') {
    $texversion=&IndexCreation($texversion,$currentURL);
       }
       if ($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/|
    && $currentURL=~/\.(sequence|page)$/ && $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 $texversion=&ssi_with_retries($currentURL, $ssi_retry_count, %form);
    if ($helper->{'VARS'}->{'PRINT_ANNOTATIONS'} eq 'yes') {
       my $annotation = &annotate($currentURL);
       $texversion    =~ s/(\\end{document})/$annotation$1/;
    }
    $result .= $texversion;
    } elsif ($cleanURL =~/\.tex$/) {
       # For this sort of print of a single LaTeX file,
       # We can just print the LaTeX file as it is uninterpreted in any way:
       #
   
       $result = &fetch_raw_resource($currentURL);
       if ($helper->{'VARS'}->{'PRINT_ANNOTATIONS'} eq 'yes') {
    my $annotation = &annotate($currentURL);
    $result =~ s/(\\end{document})/$annotation$1/;
       }
   
       $do_postprocessing = 0; # Don't massage the result.
   
    } elsif ($cleanURL =~ /\.pdf$/i) {
       $result .= &include_pdf($cleanURL);
       $result .= '\end{document}';
    } elsif ($cleanURL =~ /\.page$/i) { #  Print page in non construction space contexts.
   
       # Determine the set of resources in the map of the page:
   
       my $navmap         =  Apache::lonnavmaps::navmap->new();
       my @page_resources =  $navmap->retrieveResources($cleanURL);
       $result           .=  &print_page_in_course($helper, $rparmhash,
    $cleanURL, \@page_resources);
   
          
    } else {
       &Apache::lonnet::logthis("Unsupported type handler");
       $result.=&unsupported($currentURL,$helper->{'VARS'}->{'LATEX_TYPE'},
     $helper->{'VARS'}->{'symb'});
    }
       } elsif (($helper->{'VARS'}->{'PRINT_TYPE'} eq 'map_problems')       or
                ($helper->{'VARS'}->{'PRINT_TYPE'} eq 'map_problems_pages') or
                ($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
    if ($helper->{'VARS'}->{'PRINT_TYPE'} eq 'map_problems') {
       $selectionmade = 2;
    } elsif ($helper->{'VARS'}->{'PRINT_TYPE'} eq 'map_problems_pages') {
       $selectionmade = 3;
    } elsif (($helper->{'VARS'}->{'PRINT_TYPE'} eq 'all_problems') 
    ) {
       $selectionmade = 4;
    } elsif ($helper->{'VARS'}->{'PRINT_TYPE'} eq 'all_resources') {  #BUGBUG
       $selectionmade = 4;
    } elsif ($helper->{'VARS'}->{'PRINT_TYPE'} eq 'select_sequences') {
       $selectionmade = 7;
    }
    $form{'problem_split'}=$parmhash{'problem_stream_switch'};
    $form{'suppress_tries'}=$parmhash{'suppress_tries'};
    $form{'latex_type'}=$helper->{'VARS'}->{'LATEX_TYPE'};
    $form{'print_discussions'}=$helper->{'VARS'}->{'PRINT_DISCUSSIONS'};
    $form{'print_annotations'} = $helper->{'VARS'}->{'PRINT_ANNOTATIONS'};
    if (($helper->{'VARS'}->{'PRINT_DISCUSSIONS'} eq 'yes')   ||
       ($helper->{'VARS'}->{'PRINT_ANNOTATIONS'} eq 'yes') ) {
       $form{'problem_split'}='yes';
    }
    my $flag_latex_header_remove = 'NO';
    my $flag_page_in_sequence = 'NO';
    my @master_seq=split /\|\|\|/, $helper->{'VARS'}->{'RESOURCES'};
    my $prevassignment='';
   
    &Apache::lonxml::clear_problem_counter();
   
    my $pbreakresources = keys %page_breaks;
    for (my $i=0;$i<=$#master_seq;$i++) {
   
       &Apache::lonenc::reset_enc();
   
   
       # Note due to document structure, not allowed to put \newpage
       # prior to the first resource
   
       if (defined $page_breaks{$master_seq[$i]}) {
    if($i != 0) {
       $result.="\\newpage\n";
    }
       }
       my ($sequence,$middle_thingy,$urlp)=&Apache::lonnet::decode_symb($master_seq[$i]);
       $urlp=&Apache::lonnet::clutter($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();
    $texversion.=&ssi_with_retries($urlp, $ssi_retry_count, %form);
    if ($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 $answer=&ssi_with_retries($urlp, $ssi_retry_count, %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'});
       $texversion =~ s/\\begin{document}//;
       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 ($helper->{'VARS'}->{'PRINT_ANNOTATIONS'} eq 'yes') {
       my $annotation .= &annotate($urlp);
       $texversion =~ s/(\\keephidden{ENDOFPROBLEM})/$annotation$1/;
    }
   
    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();
       $prevassignment=$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 $texversion=&ssi_with_retries($urlp, $ssi_retry_count, %form);
    if ($helper->{'VARS'}->{'PRINT_ANNOTATIONS'} eq 'yes') {
       my $annotation = &annotate($urlp);
       $texversion =~ s/(\\end{document)/$annotation$1/;
    }
   
    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;
    $flag_latex_header_remove = 'YES'; 
       } elsif ($urlp=~ /\.pdf$/i) {
    if ($i > 0) {
       $result .= '\cleardoublepage';
    }
    $result .= &include_pdf($urlp);
    if ($i != $#master_seq) {
       if ($numberofcolumns eq '1') {
    $result .= '\newpage';
       } else {
    # the \\'s seem to be needed to let LaTeX know there's something
    # on the page since LaTeX seems to not like to clear an empty page.
    #
    $result .= '\\ \cleardoublepage';
       }
    }
    $flag_latex_header_remove = 'YES';
   
     } else {      } else {
  $startlink = rindex($map_string,'src="',$stalink);   $texversion=&unsupported($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; 
     }      }
    }
    &Apache::lonxml::clear_problem_counter();
    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') ||
         ($helper->{'VARS'}->{'PRINT_TYPE'} eq 'all_problems_students') ||
         ($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') ||
        ($helper->{'VARS'}->{'PRINT_TYPE'} eq 'all_problems_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{'print_annotations'} = $helper->{'VARS'}->{'PRINT_ANNOTATIONS'};
    $moreenv{'problem_split'}    = $parmhash{'problem_stream_switch'};
    $moreenv{'suppress_tries'}   = $parmhash{'suppress_tries'};
    if (($helper->{'VARS'}->{'PRINT_DISCUSSIONS'} eq 'yes')  ||
        ($helper->{'VARS'}->{'PRINT_ANNOTATIONS'} 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'};
            my @lines = &Apache::grades::get_scantronformat_file();
    my ($code_type,$code_length)=('letter',6);
    foreach my $line (@lines) {
        my ($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 
    $selectionmade = 6;
           my @list_of_files=split /\|\|\|/, $helper->{'VARS'}->{'FILES'};
    @list_of_files=sort @list_of_files;
    my $flag_latex_header_remove = 'NO'; 
    my $rndseed=time;
    if ($helper->{'VARS'}->{'curseed'}) {
       $rndseed=$helper->{'VARS'}->{'curseed'};
    }
    for (my $i=0;$i<=$#list_of_files;$i++) {
   
       &Apache::lonenc::reset_enc();
   
       my $urlp = $list_of_files[$i];
       $urlp=~s|//|/|;
       if ($urlp=~/\//) {
    $form{'problem_split'}=$parmhash{'problem_stream_switch'};
    $form{'rndseed'}=$rndseed;
    if ($urlp =~ m|/home/([^/]+)/public_html|) {
       $urlp =~ s|/home/([^/]*)/public_html|/~$1|;
    } else {
       $urlp =~ s|^$Apache::lonnet::perlvar{'lonDocRoot'}||;
    }
    $resources_printed .= $urlp.':';
    my $texversion=&ssi_with_retries($urlp, $ssi_retry_count, %form);
    if(($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 $answer=&ssi_with_retries($urlp, $ssi_retry_count, %answerform);
       if ($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 chunk 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 /;
       
    }
    $result .= $texversion;
       }
       $flag_latex_header_remove = 'YES';  
  }   }
  $startlink = index($map_string,'"',$startlink);   if ($helper->{VARS}->{'construction'} eq '1') {$result=~s/(\\typeout)/ RANDOM SEED IS $rndseed $1/;}
  $endlink = index($map_string,'"',$startlink+1);   $result .= '\end{document}';      
  $chunk = substr($map_string,$startlink,$endlink-$startlink+1);  
  push @file_seq,$chunk;  
     }      }
     return @file_seq;  #-------------------------------------------------------- corrections for the different page formats
   
       # Only post process if that has not been turned off e.g. by a raw latex resource.
   
       if ($do_postprocessing) {
    $result = &page_format_transformation($papersize,$laystyle,$numberofcolumns,$helper->{'VARS'}->{'PRINT_TYPE'},$result,$helper->{VARS}->{'assignment'},$helper->{'VARS'}->{'TABLE_CONTENTS'},$helper->{'VARS'}->{'TABLE_INDEX'},$selectionmade);
    $result = &latex_corrections($number_of_columns,$result,$selectionmade,
        $helper->{'VARS'}->{'ANSWER_TYPE'});
    #if ($numberofcolumns == 1) {
    $result =~ s/\\textwidth\s*=\s*-?\d*\.?\d*\s*(cm|mm|in)/\\textwidth= $helper->{'VARS'}->{'pagesize.width'} $helper->{'VARS'}->{'pagesize.widthunit'} /;
    $result =~ s/\\textheight\s*=?\s*-?\d*\.?\d*\s*(cm|mm|in)/\\textheight $helper->{'VARS'}->{'pagesize.height'} $helper->{'VARS'}->{'pagesize.heightunit'} /;
    $result =~ s/\\evensidemargin\s*=\s*-?\d*\.?\d*\s*(cm|mm|in)/\\evensidemargin= $helper->{'VARS'}->{'pagesize.lmargin'} $helper->{'VARS'}->{'pagesize.lmarginunit'} /;
    $result =~ s/\\oddsidemargin\s*=\s*-?\d*\.?\d*\s*(cm|mm|in)/\\oddsidemargin= $helper->{'VARS'}->{'pagesize.lmargin'} $helper->{'VARS'}->{'pagesize.lmarginunit'} /;
    #}
       }
   
       # Set URLback if this is a construction space print so we can provide
       # a link to the resource being edited.
       #
   
       my $URLback=''; #link to original document
       if ($helper->{'VARS'}->{'construction'} eq '1') {
    #prints resource from the construction space
    $URLback='/'.$helper->{'VARS'}->{'filename'};
    if ($URLback=~/([^?]+)/) {
       $URLback=$1;
       $URLback=~s|^/~|/priv/|;
    }
       }
       #
       # Final adjustment of the font size:
       #
   
       $result = set_font_size($result);
   
   #-- writing .tex file in prtspool 
       my $temp_file;
       my $identifier = &Apache::loncommon::get_cgi_id();
       my $filename = "/home/httpd/prtspool/$env{'user.name'}_$env{'user.domain'}_printout_$identifier.tex";
       if (!($#print_array>0)) { 
          unless ($temp_file = Apache::File->new('>'.$filename)) {
     $r->log_error("Couldn't open $filename for output $!");
     return SERVER_ERROR; 
          }
          print $temp_file $result;
          my $begin=index($result,'\begin{document}',0);
          my $inc=substr($result,0,$begin+16); 
       } else {
          my $begin=index($result,'\begin{document}',0);
          my $inc=substr($result,0,$begin+16);
          for (my $i=0;$i<=$#print_array;$i++) {
     if ($i==0) {
         $print_array[$i]=$result;
     } else {
         $print_array[$i].='\end{document}';
         $print_array[$i] = 
    &latex_corrections($number_of_columns,$print_array[$i],
      $selectionmade, 
      $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];
          }
       }
       my $student_names='';
       if ($#print_array>0) {
           for (my $i=0;$i<=$#print_array;$i++) {
      $student_names.=$student_names[$i].'_ENDPERSON_';
    }
       } else {
    if ($#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_';
    }
        }
   
        # logic for now is too complex to trace if this has been defined
        #  yet.
        my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
        my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
        &Apache::lonnet::appenv({'cgi.'.$identifier.'.file'   => $filename,
    'cgi.'.$identifier.'.layout'  => $laystyle,
    'cgi.'.$identifier.'.numcol'  => $numberofcolumns,
    'cgi.'.$identifier.'.paper'  => $papersize,
    'cgi.'.$identifier.'.selection' => $selectionmade,
    'cgi.'.$identifier.'.tableofcontents' => $helper->{'VARS'}->{'TABLE_CONTENTS'},
    'cgi.'.$identifier.'.tableofindex' => $helper->{'VARS'}->{'TABLE_INDEX'},
    'cgi.'.$identifier.'.role' => $perm{'pav'},
    'cgi.'.$identifier.'.numberoffiles' => $#print_array,
    'cgi.'.$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();
       my $continue_text = &mt('Continue');
       # If there's been an unrecoverable SSI error, report it to the user
       if ($ssi_error) {
           my $helpurl = &Apache::loncommon::top_nav_help('Helpdesk');
           $r->print('<br /><p class="LC_error">'.&mt('An unrecoverable network error occurred:').'</p><p>'.
                     &mt('At least one of the resources you chose to print could not be rendered due to an unrecoverable error when communicating with a server:').
                     '<br />'.$ssi_last_error_resource.'<br />'.$ssi_last_error.
                     '</p><p>'.&mt('You can continue using the link provided below, but make sure to carefully inspect your output file! The errors will be marked in the file.').'<br />'.
                     &mt('You may be able to reprint the individual resources for which this error occurred, as the issue may be temporary.').
                     '<br />'.&mt('If the error persists, please contact the [_1] for assistance.',$helpurl).'</p><p>'.
                     &mt('We apologize for the inconvenience.').'</p>'.
                     '<a href="/cgi-bin/printout.pl?'.$identifier.'">'.$continue_text.'</a>'.$end_page);
       } else {
    $r->print(<<FINALEND);
   <br />
   <meta http-equiv="Refresh" content="0; url=/cgi-bin/printout.pl?$identifier" />
   <a href="/cgi-bin/printout.pl?$identifier">$continue_text</a>
   $end_page
   FINALEND
       }                                     # endif ssi errors.
 }  }
   
   
   sub get_CODE {
       my ($all_codes,$num,$seed,$size,$type)=@_;
       my $max='1'.'0'x$size;
       my $newcode;
       while(1) {
    $newcode=sprintf("%0".$size."d",int(rand($max)));
    if (!exists($$all_codes{$newcode})) {
       $$all_codes{$newcode}=1;
       if ($type eq 'number' ) {
    return $newcode;
       } else {
    return &num_to_letters($newcode);
       }
    }
       }
   }
   
   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 $rendered = &get_student_view_with_retries($curresline,$ssi_retry_count,$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 {
   
       
       my $header =&print_latex_header($helper->{'VARS'}->{'LATEX_TYPE'});
       $header =~ s/\\begin{document}//;     #<<<<<
       my $title = &Apache::lonnet::gettitle($curresline);
       $title = &Apache::lonxml::latex_special_symbols($title);
       my $body   ='\vskip 0 mm \noindent\textbf{'.$title.'}\vskip 0 mm ';
       $body     .=&path_to_problem($res_url,$LaTeXwidth);
       $body     .='\vskip 1 mm '.$ansrendered;
       $body     = &encapsulate_minipage($body);
       $rendered = $header.$body;
    }
       }
   
       if ($helper->{'VARS'}->{'PRINT_ANNOTATIONS'} eq 'yes') {
    my $url = &Apache::lonnet::clutter($res_url);
    my $annotation = &annotate($url);
    $rendered =~  s/(\\keephidden{ENDOFPROBLEM})/$annotation$1/;
       }
       if ($remove_latex_header eq 'YES') {
    $rendered = &latex_header_footer_remove($rendered);
       } else {
    $rendered =~ s/\\end{document}//;
       }
       $current_output .= $rendered;    
    } elsif ($res_url=~/\/(smppg|syllabus|aboutme|bulletinboard)$/) {
       $printed .= $curresline.':';
       my $rendered = &get_student_view_with_retries($curresline,$ssi_retry_count,$username,$userdomain,$env{'request.course.id'},'tex',$moreenv);
       if ($helper->{'VARS'}->{'PRINT_ANNOTATIONS'} eq 'yes') {
    my $url = &Apache::lonnet::clutter($res_url);
    my $annotation = &annotate($url);
    $annotation    =~ s/(\\end{document})/$annotation$1/;
       }
       if ($remove_latex_header eq 'YES') {
    $rendered = &latex_header_footer_remove($rendered);
       } else {
    $rendered =~ s/\\end{document}//;
       }
       $current_output .= $rendered.'\vskip 0.5mm\noindent\makebox[\textwidth/$number_of_columns][b]{\hrulefill}\strut \vskip 0 mm \strut ';
    } elsif($res_url = ~/\.pdf$/) {
       my $url = &Apache::lonnet::clutter($res_url);
       my $rendered  = &include_pdf($url);
       if ($remove_latex_header ne 'NO') {
    $rendered = &latex_header_footer_remove($rendered);
       }
       $current_output .= $rendered;
    } else {
       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;
    }
       }
       $remove_latex_header = 'YES';
    } 
    if (&Apache::loncommon::connection_aborted($r)) { last; }
       }
   
   
       my $courseidinfo = &get_course();
       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, $usersection);
       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 get_randomly_ordered_warning {
       my ($helper,$map) = @_;
   
       my $message;
   
       my $postdata = $env{'form.postdata'} || $helper->{VARS}{'postdata'};
       my $navmap = Apache::lonnavmaps::navmap->new();
       if (defined($navmap)) {
           my $res = $navmap->getResourceByUrl($map);
           if ($res) {
       my $func = 
           sub { return ($_[0]->is_map() && $_[0]->randomorder); };
       my @matches = $navmap->retrieveResources($res, $func,1,1,1);
       if (@matches) {
           $message = "Some of the items below are in folders set to be randomly ordered. However, when printing the contents of these folders, they will be printed in the original order for all students, not the randomized order.";
       }
           }
           if ($message) {
       return '<message type="warning">'.$message.'</message>';
           }
       } else {
           $message = "Retrieval of information about ordering of resources failed."; 
           return '<message type="warning">'.$message.'</message>';
       }
       return;
   }
   
   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->rflush();
   
       # Unfortunately, this helper is so complicated we have to
       # write it by hand
   
       Apache::loncommon::get_unprocessed_cgi($ENV{QUERY_STRING});
       
       my $helper = Apache::lonhelper::helper->new("Printing Helper");
       $helper->declareVar('symb');
       $helper->declareVar('postdata');    
       $helper->declareVar('curseed'); 
       $helper->declareVar('probstatus');   
       $helper->declareVar('filename');
       $helper->declareVar('construction');
       $helper->declareVar('assignment');
       $helper->declareVar('style_file');
       $helper->declareVar('student_sort');
       $helper->declareVar('FINISHPAGE');
       $helper->declareVar('PRINT_TYPE');
       $helper->declareVar("showallfoils");
       $helper->declareVar("STUDENTS");
   
   
      
   
   
       #  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.problemstatus'};
       }
   
 #-- start form      my $userCanSeeHidden = Apache::lonnavmaps::advancedUser();
     &headerform($r);  
 #-- menu for output      Apache::lonhelper::registerHelperTags();
     unless  ($ENV{'form.phase'}) {  
  &menu_for_output($r);      # "Delete everything after the last slash."
     }      $subdir =~ s|/[^/]+$||;
 #-- core part   
     if ($ENV{'form.phase'} eq 'two') {      # What can be printed is a very dynamic decision based on
  &output_data($r);      # 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()||$res->contains_problem||$res->is_practice()) ';
       $isProblem .= ' && !$res->randomout()' if !$userCanSeeHidden;
       my $isProblemOrMap = '$res->is_problem() || $res->contains_problem() || $res->is_sequence() || $res->is_practice()';
       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 [_1]Problems[_2] from folder [_3]','<b>','</b>','<b><i>'.$sequenceTitle.'</i></b>'), 'map_problems', 'CHOOSE_PROBLEMS'];
           # Allow all resources from sequence
           push @{$printChoices}, [&mt('Selected [_1]Resources[_2] from folder [_3]','<b>','</b>','<b><i>'.$sequenceTitle.'</i></b>'), '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 others) allow them to print all 
       # problems and resources  in the entire course, optionally for selected students
       if ($perm{'pfo'} &&  !$is_published  &&
           ($helper->{VARS}->{'postdata'}=~/\/res\// || $helper->{VARS}->{'postdata'}=~/\/(syllabus|smppg|aboutme|bulletinboard)$/)) { 
   
           push @{$printChoices}, [&mtn('Selected <b>Problems</b> from <b>entire course</b>'), 'all_problems', 'ALL_PROBLEMS'];
    push @{$printChoices}, [&mtn('Selected <b>Resources</b> from <b>entire course</b>'), 'all_resources', 'ALL_RESOURCES'];
    push @{$printChoices}, [&mtn('Selected <b>Problems</b> from <b>entire course</b> for <b>selected people</b>'), 'all_problems_students', 'ALL_PROBLEMS_STUDENTS'];
            &Apache::lonxml::xmlparse($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>
     <state name="ALL_PROBLEMS_STUDENTS" title="Select Problem(s) to print">
       <resource variable="RESOURCES" toponly='0' multichoice="1"
    suppressEmptySequences='0' addstatus="1" closeallpages="1">
         <nextstate>STUDENTS1</nextstate>
         <filterfunc>return $isProblemOrMap;</filterfunc>
         <choicefunc>return $isNotMap;</choicefunc>
         <valuefunc>return $symbFilter;</valuefunc>
         $start_new_option
       </resource>
     </state>
     <state name="STUDENTS1" title="Select People">
         <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="PRINT_FORMATTING" coursepersonnel="1"/>
     </state>
   
   ALL_PROBLEMS
   
    if ($helper->{VARS}->{'assignment'}) {
       push @{$printChoices}, [&mt('Selected [_1]Problems[_2] from folder [_3] for [_4]selected people[_5]','<b>','</b>','<b><i>'.$sequenceTitle.'</i></b>','<b>','</b>'), 'problems_for_students', 'CHOOSE_STUDENTS'];
       push @{$printChoices}, [&mt('Selected [_1]Problems[_2] from folder [_3] for [_4]CODEd assignments[_5]','<b>','</b>','<b><i>'.$sequenceTitle.'</i></b>','<b>','</b>'), 'problems_for_anon', 'CHOOSE_ANON1'];
    }
   
    my $randomly_ordered_warning = 
       &get_randomly_ordered_warning($helper,$map);
   
    # 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">
       $randomly_ordered_warning
   
      <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}},@{$helper->{DATA}{ALL_CODE_CHOICES}});
                     </exec>
    </dropdown>
       <message></td></tr><tr><td></message>
               '.$/;
   
    }
   
           my @lines = &Apache::grades::get_scantronformat_file();
    my $codechoice='';
    foreach my $line (@lines) {
       my ($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 save 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 [_1]Resources[_2] from folder [_3] for [_4]selected people[_5]','<b>','</b>','<b><i>'.$sequenceTitle.'</i></b>','<b>','</b>'), 'resources_for_students', 'CHOOSE_STUDENTS1'];
       push @{$printChoices}, [&mt('Selected [_1]Resources[_2] from folder [_3] for [_4]CODEd assignments[_5]','<b>','</b>','<b><i>'.$sequenceTitle.'</i></b>','<b>','</b>'), 'resources_for_anon', 'CHOOSE_ANON2'];
    }
       
   
    $resource_selector=<<RESOURCE_SELECTOR;
       <state name="SELECT_RESOURCES" title="Select Resources">
       $randomly_ordered_warning
   
       <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 save 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 @{$printChoices}, [&mt('Selected [_1]Problems[_2] from current subdirectory [_3]','<b>','</b>','<b><i>'.$pretty_dir.'</i></b>','<b>','</b>'), '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, [&mtn("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('<br />'
                      .'<h3>'.&mt('Print Options').'</h3>'
                      .&Apache::lonhtmlcommon::start_pick_box()
                      .&Apache::lonhtmlcommon::row_title(
                          '<label for="ANSWER_TYPE_forminput">'
                         .&mt('Print Answers')
                         .'</label>'
                       )
           );
           $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(&Apache::lonhtmlcommon::row_closure());
    $startedTable = 1;
   
   #
   #  Select font size.
   #
   
               $helper->declareVar('fontsize');
               &addMessage(&Apache::lonhtmlcommon::row_title(&mt('Font Size')));
               my $xmlfrag = << "FONT_SELECTION";
   
             
               <dropdown variable='fontsize' multichoice='0', allowempty='0'>
               <defaultvalue>
     return 'normalsize';
               </defaultvalue>
               <choice computer='tiny'>Tiny</choice>
               <choice computer='sub/superscriptsize'>Script Size</choice>
               <choice computer='footnotesize'>Footnote Size</choice>
               <choice computer='small'>Small</choice>
               <choice computer='normalsize'>Normal (default)</choice>
               <choice computer='large'>larger than normal</choice>
               <choice computer='Large'>Even larger than normal</choice>
               <choice computer='LARGE'>Still larger than normal</choice>
               <choice computer='huge'>huge font size</choice>
               <choice computer='Huge'>Largest possible size</choice>
               </dropdown>
   FONT_SELECTION
               &Apache::lonxml::xmlparse($r, 'helper', $xmlfrag);
               &addMessage(&Apache::lonhtmlcommon::row_closure(1));
       }
   
       if ($perm{'pav'}) {
    if (!$startedTable) {
       addMessage("<hr width='33%' /><table><tr><td align='right'>".
                          '<label for="LATEX_TYPE_forminput">'.
                          &mt('LaTeX mode').
                          "</label>: </td><td>");
       $startedTable = 1;
    } else {
       &addMessage(&Apache::lonhtmlcommon::row_title(
                              '<label for="LATEX_TYPE_forminput">'
                              .&mt('LaTeX mode')
                              .'</label>'
                           )
               );
    }
           $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 {
       $paramHash->{CHOICES} = [
        ['LaTeX batchmode', 'batchmode'],
        ['standard LaTeX mode', 'standard'] ];
    }
           Apache::lonhelper::dropdown->new();
    
    &addMessage(&Apache::lonhtmlcommon::row_closure()
                      .&Apache::lonhtmlcommon::row_title(
                           '<label for="TABLE_CONTENTS_forminput">'
                          .&mt('Print Table of Contents')
                          .'</label>'
                       )
           );
           $paramHash = Apache::lonhelper::getParamHash();
    $paramHash->{'variable'} = 'TABLE_CONTENTS';   
    $helper->declareVar('TABLE_CONTENTS');         
           $paramHash->{CHOICES} = [
                                      ['No', 'no'],
                                      ['Yes', 'yes'] ];
           Apache::lonhelper::dropdown->new();
    &addMessage(&Apache::lonhtmlcommon::row_closure());
           
    if (not $helper->{VARS}->{'construction'}) {
       &addMessage(&Apache::lonhtmlcommon::row_title(
                               '<label for="TABLE_INDEX_forminput">'
                              .&mt('Print Index')
                              .'</label>'
                           )
               );
       $paramHash = Apache::lonhelper::getParamHash();
       $paramHash->{'variable'} = 'TABLE_INDEX';   
       $helper->declareVar('TABLE_INDEX');         
       $paramHash->{CHOICES} = [
        ['No', 'no'],
        ['Yes', 'yes'] ];
       Apache::lonhelper::dropdown->new();
               &addMessage(&Apache::lonhtmlcommon::row_closure());
               &addMessage(&Apache::lonhtmlcommon::row_title(
                               '<label for="PRINT_DISCUSSIONS_forminput">'
                              .&mt('Print Discussions')
                              .'</label>'
                           )
               );
       $paramHash = Apache::lonhelper::getParamHash();
       $paramHash->{'variable'} = 'PRINT_DISCUSSIONS';   
       $helper->declareVar('PRINT_DISCUSSIONS');         
       $paramHash->{CHOICES} = [
        ['No', 'no'],
        ['Yes', 'yes'] ];
       Apache::lonhelper::dropdown->new();
               &addMessage(&Apache::lonhtmlcommon::row_closure());
   
       # Prompt for printing annotations too.
   
       &addMessage(&Apache::lonhtmlcommon::row_title(
                               '<label for="PRINT_ANNOTATIONS_forminput">'
                              .&mt('Print Annotations')
                              .'</label>'
                           )
               );
       $paramHash = Apache::lonhelper::getParamHash();
       $paramHash->{'variable'} = "PRINT_ANNOTATIONS";
       $helper->declareVar("PRINT_ANNOTATIONS");
       $paramHash->{CHOICES} = [
        ['No', 'no'],
        ['Yes', 'yes']];
       Apache::lonhelper::dropdown->new();
               &addMessage(&Apache::lonhtmlcommon::row_closure());
   
               &addMessage(&Apache::lonhtmlcommon::row_title(&mt('Foils')));
       $paramHash = Apache::lonhelper::getParamHash();
       $paramHash->{'multichoice'} = "true";
       $paramHash->{'allowempty'}  = "true";
       $paramHash->{'variable'}   = "showallfoils";
       $paramHash->{'CHOICES'} = [ [&mt('Show All Foils'), "1"] ];
       Apache::lonhelper::choices->new();
               &addMessage(&Apache::lonhtmlcommon::row_closure(1));
    }
   
    if ($helper->{'VARS'}->{'construction'}) { 
       my $stylevalue='$Apache::lonnet::env{"construct.style"}';
               my $randseedtext=&mt("Use random seed");
               my $stylefiletext=&mt("Use style file");
               my $selectfiletext=&mt("Select style file");
   
       my $xmlfrag .= '<message>'
               .&Apache::lonhtmlcommon::row_title('<label for="curseed_forminput">'
                                                 .$randseedtext
                                                 .'</label>'
                )
               .'</message>
               <string variable="curseed" size="15" maxlength="15">
                   <defaultvalue>
                      return '.$helper->{VARS}->{'curseed'}.';
                   </defaultvalue>'
               .'</string>'
               .'<message>'
               .&Apache::lonhtmlcommon::row_closure()
               .&Apache::lonhtmlcommon::row_title('<label for="style_file">'
                                                 .$stylefiletext
                                                 .'</label>'
                )
               .'</message>
                <string variable="style_file" size="40">
                   <defaultvalue>
                       return '.$stylevalue.';
                   </defaultvalue>
                </string><message>&nbsp;'
   .qq|<a href="javascript:openbrowser('helpform','style_file_forminput','sty')">|
   .$selectfiletext.'</a>'
               .&Apache::lonhtmlcommon::row_closure()
               .&Apache::lonhtmlcommon::row_title(&mt('Show All Foils'))
               .'</message>
        <choices allowempty="1" multichoice="true" variable="showallfoils">
                   <choice computer="1">&nbsp;</choice>
                </choices>'
       .'<message>'
               .&Apache::lonhtmlcommon::row_closure()
               .'</message>';
               &Apache::lonxml::xmlparse($r, 'helper', $xmlfrag);
   
   
               &addMessage(&Apache::lonhtmlcommon::row_title(&mt('Problem Type')));
       #
       # Initial value from construction space:
       #
       if (!$helper->{VARS}->{'probstatus'} && $env{'form.problemtype'}) {
    $helper->{VARS}->{'probstatus'} = $env{'form.problemtype'}; # initial value
       }
       $xmlfrag = << "PROBTYPE";
    <dropdown variable="probstatus" multichoice="0" allowempty="0">
      <defaultvalue>
         return "$helper->{VARS}->{'probstatus'}";
                      </defaultvalue>
      <choice computer="problem">Homework Problem</choice>
      <choice computer="exam">Exam Problem</choice>
      <choice computer="survey">Survey question</choice>
    </dropdown>
   PROBTYPE
               &Apache::lonxml::xmlparse($r, 'helper', $xmlfrag);
               &addMessage(&Apache::lonhtmlcommon::row_closure(1));
   
   
   
           }
       }
   
   
   
   
       if ($startedTable) {
           &addMessage(&Apache::lonhtmlcommon::end_pick_box());
       }
   
       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');
       my $landscape=&mt('Landscape');
       my $portrait=&mt('Portrait');
       my $pdfFormLabel=&mt('PDF-Formfields');
       my $with=&mt('with Formfields');
       my $without=&mt('without Formfields');
       
   
       $result.='<h3>'.&mt('Layout Options').'</h3>'
               .&Apache::loncommon::start_data_table()
               .&Apache::loncommon::start_data_table_header_row()
               .'<th>'.$PageLayout.'</th>'
               .'<th>'.$NumberOfColumns.'</th>'
               .'<th>'.$PaperType.'</th>'
               .'<th>'.$pdfFormLabel.'</th>'
               .&Apache::loncommon::end_data_table_header_row()
               .&Apache::loncommon::start_data_table_row()
       .'<td>'
       .'<label><input type="radio" name="'.${var}.'.layout" value="L" />'.$landscape.'</label><br />'
       .'<label><input type="radio" name="'.${var}.'.layout" value="P" checked="checked" />'.$portrait.'</label>'
       .'</td>';
   
       $result.='<td align="center">'
               .'<select name="'.${var}.'.cols">';
   
       my $i;
       for ($i = 1; $i <= $maxColumns; $i++) {
           if ($i == 2) {
               $result .= '<option value="'.$i.'" selected="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/) {
               $result .= '<option selected="selected" value="'.$papersize.'">'.$paperSize[$i].'</option>'."\n";
           } else {
               $result .= '<option value="'.$papersize.'">'.$paperSize[$i].'</option>'."\n";
           }
           $i++;
       }
       $result .= <<HTML;
           </select>
       </td>
       <td align='center'>
           <select name='${var}.pdfFormFields'>
               <option selected="selected" value="no">$without</option>
               <option value="yes">$with</option>
           </select>
       </td>
   HTML
       $result.=&Apache::loncommon::end_data_table_row()
               .&Apache::loncommon::end_data_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"} . '|' . $env{"form.$var.pdfFormFields"};
       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);
   
       $laystyle = &Apache::lonprintout::map_laystyle($laystyle);
   
   
   
       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;
       }
       my %lt = &Apache::lonlocal::texthash(
           'format' => 'How should each column be formatted?',
           'width'  => 'Width',
           'height' => 'Height',
           'margin' => 'Left Margin'
       );
   
       $result .= '<p>'.$lt{'format'}.'</p>'
                 .&Apache::lonhtmlcommon::start_pick_box()
                 .&Apache::lonhtmlcommon::row_title($lt{'width'})
                 .'<input type="text" name="'.$var.'.width" value="'.$size{'width'}.'" size="4" />'
                 .'<select name="'.$var.'.widthunit">'
                 .$size{'width_options'}
                 .'</select>'
                 .&Apache::lonhtmlcommon::row_closure()
                 .&Apache::lonhtmlcommon::row_title($lt{'height'})
                 .'<input type="text" name="'.$var.'.height" value="'.$size{'height'}.'" size="4" />'
                 .'<select name="'.$var.'.heightunit">'
                 .$size{'height_options'}
                 .'</select>'
                 .&Apache::lonhtmlcommon::row_closure()
                 .&Apache::lonhtmlcommon::row_title($lt{'margin'})
                 .'<input type="text" name="'.$var.'.lmargin" value="'.$size{'margin'}.'" size="4" />'
                 .'<select name="'.$var.'.lmarginunit">'
                 .$size{'margin_options'}
                 .'</select>'
                 .&Apache::lonhtmlcommon::row_closure(1)
                 .&Apache::lonhtmlcommon::end_pick_box();
       # <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>
   
       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);
   
   
    $laystyle = &Apache::lonprintout::map_laystyle($laystyle);
   
    #  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.1.38  
changed lines
  Added in v.1.561


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