Diff for /loncom/interface/lonprintout.pm between versions 1.120 and 1.550

version 1.120, 2003/02/25 16:45:25 version 1.550, 2009/04/17 10:08:42
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 49  use Apache::grades; Line 37  use Apache::grades;
 use Apache::edit;  use Apache::edit;
 use Apache::File();  use Apache::File();
 use Apache::lonnavmaps;  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 GDBM_File;  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.
   #
   
 my %hash;  my $ssi_error; # True if there was an ssi error.
 my $LaTeXwidth = 0;  my $ssi_last_error_resource; # The resource URI that could not be fetched.
   my $ssi_last_error; # The error text from the server. (e.g. 500 Server timed out).
   
 sub headerform {  #
     my $r = shift;  #  Our ssi max retry count.
     $r->print(<<ENDHEADER);  #
 <html>  
 <head>  
 <title>LON-CAPA output for printing</title>  
 </head>  
 <body bgcolor="FFFFFF">  
 <form method="post" enctype="multipart/form-data" action="/adm/printout" name="printform">  
 ENDHEADER  
   
     if ($ENV{'form.postdata'}=~m|^/res/|) {  my $ssi_retry_count = 5; # Some arbitrary value.
  $r->print(<<ENDHEADER1);  
 <b>Path to current document: </b><tt>$ENV{'form.postdata'}</tt><p>  
 ENDHEADER1  
   # 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 $annotation_text = &Apache::admannotations::get_annotation($symb, 1);
     my $r = shift;  
     my ($title_for_single_resource,$title_for_sequence,$title_for_main_map) = &details_for_menu;  
     my $assignment = $title_for_sequence;      my $result = "";
     if ($title_for_single_resource ne '') {$title_for_single_resource = '"'.$title_for_single_resource.'"';}  
     if ($title_for_sequence ne '') {$title_for_sequence = '"'.$title_for_sequence.'"';}      if (length($annotation_text) > 0) {
     if ($title_for_main_map ne '') {$title_for_main_map = '"'.$title_for_main_map.'"';}   $result .= '\\hspace*{\\fill} \\\\[\\baselineskip] \textbf{Annotations:} \\\\ ';
     $ENV{'form.postdata'} =~ s|http://[^/]+||;   $result .= "\n";
     my $subdir_to_print = $ENV{'form.postdata'};   $result .= &Apache::lonxml::latex_special_symbols($annotation_text,""); # Escape latex.
     $subdir_to_print =~ m/\/([^\/]+)$/;   $result .= "\n\n";
     $subdir_to_print =~ s/\Q$1\E//;  
     $r->print(<<ENDMENUOUT1);  
 <h1>What do you want to print? Make a choice.</h1><br />  
 <input type="hidden" name="phase" value="two">  
 <input type="hidden" name="url" value="$ENV{'form.postdata'}">  
 <input type="hidden" name="assignment" value="$assignment">  
 <input type="radio" name="choice" value="Standard LaTeX output for current document" checked>  Current document <b>$title_for_single_resource</b>  
 (prints what you just saw on the screen)<br />  
 ENDMENUOUT1  
     if ($ENV{'form.postdata'}=~/\/res\//) {  
  $r->print(<<ENDMENUOUT2);  
 <input type="radio" name="choice" value="Standard LaTeX output for the primary sequence">  Problem(s) from <b>$title_for_sequence</b><br />  
 <input type="radio" name="choice" value="Standard LaTeX output for whole primary sequence">  Problem(s) plus page(s) or html/xml file(s) from <b>$title_for_sequence</b><br />  
 ENDMENUOUT2  
     }  
     if (($ENV{'request.role'}=~m/^cc\./ or $ENV{'request.role'}=~m/^in\./ or $ENV{'request.role'}=~m/^ta\./) and ($ENV{'form.postdata'}=~/\/res\//)) {   
  $r->print(<<ENDMENUOUT6);  
 <input type="radio" name="choice" value="Standard LaTeX output for the top level sequence">  All problems in this course (<b>warning:</b> this may be time consuming) <br />  
 <br />  
 <input type="radio" name="choice" value="All class print">  All problems from <b>$title_for_sequence</b> for selected students<br /><br />  
 ENDMENUOUT6  
     }  
       my $subdirtoprint = &Apache::lonnet::filelocation("",$ENV{'form.url'});  
       $subdirtoprint =~ s/\/[^\/]+$//;  
       if ((&Apache::lonnet::allowed('bre',$subdirtoprint) eq 'F') and ($ENV{'form.postdata'}=~/\.(problem|exam|quiz|assess|survey|form|library|page|xml|html|htm|xhtml|xhtm)/)) {  
   $r->print(<<ENDMENUOUT4);  
   <input type="radio" name="choice" value="Subdirectory print">  Problems from current subdirectory <b>$subdir_to_print</b><br />  
 ENDMENUOUT4  
       }  
     $r->print(<<ENDMENUOUT5);  
 <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: <select name="numberofcolumns">  
                          <option> 1 </option>  
                          <option selected> 2 </option>  
                         </select>   
    </td>  
    <td rawspan="2">  
      Paper size (format [width x height]): <select name="papersize">  
                                             <option selected> Letter [8 1/2x11 in] </option>  
                                             <option> Legal [8 1/2x14 in] </option>  
                                             <option> Ledger/Tabloid [11x17 in] </option>  
                                             <option> Executive [7 1/2x10 in] </option>  
                                             <option> A2 [420x594 mm] </option>  
                                             <option> A3 [297x420 mm] </option>  
                                             <option> A4 [210x297 mm] </option>  
                                             <option> A5 [148x210 mm] </option>  
                                             <option> A6 [105x148 mm] </option>  
                                            </select>   
    </td>  
  </tr>  
   
 </table>  
 </br>   
 <input type="submit" value="Submit your choice">  
 ENDMENUOUT5  
 }  
   
   
 sub sequence_content_menu {  
     my ($key_to,$r) = @_;  
     my $primary_sequence;  
     my $symbolic = &Apache::lonnet::symbread($ENV{'form.url'});  
     my @sequence = split('___',$symbolic);  
     if ($sequence[0]=~/^uploaded/) {$primary_sequence = '/'.$sequence[0];}   
       else {$primary_sequence = '/res/'.$sequence[0];}   
     my @master_seq = &coming_from_hash($primary_sequence);  
     my @titles_master_seq = ();   
     for (my $i=0;$i<=$#master_seq;$i++) {  
  my ($path,$title,$symb) = split /&&/,$master_seq[$i];  
  $master_seq[$i] = $path.'&&'.$symb;  
         push @titles_master_seq,  $title;  
     }  
     my @master_seq_view = @master_seq;  
     if ($ENV{'user.adv'}) {  
       for (my $i=0;$i<=$#master_seq_view;$i++) {  
  $master_seq_view[$i]=~/___\d+___(.+)$/;  
  $master_seq_view[$i]='/'.$1;  
       }  
     } else {  
       for (my $i=0;$i<=$#master_seq_view;$i++) {  
          $master_seq_view[$i]=' ';  
       }  
     }  
     $r->print(<<ENDMENUOUT1);  
 <input type="hidden" name="url" value="$ENV{'form.url'}">  
 <input type="hidden" name="choice" value="$ENV{'form.choice'}">  
 <input type="hidden" name="layout" value="$ENV{'form.layout'}">  
 <input type="hidden" name="papersize" value="$ENV{'form.papersize'}">  
 <input type="hidden" name="assignment" value="$ENV{'form.assignment'}">  
 <input type="hidden" name="numberofcolumns" value="$ENV{'form.numberofcolumns'}">  
 <h1>Mark item(s) which you want to print</h1>  
 <script>  
     function checkall() {  
  for (i=0; i<document.forms.printform.elements.length; i++) {  
             if (document.forms.printform.elements[i].name.indexOf('whatfile')==0) {  
       document.forms.printform.elements[i].checked=true;  
             }  
         }  
     }      }
     function uncheckall() {      return $result;
  for (i=0; i<document.forms.printform.elements.length; i++) {  }
             if   
           (document.forms.printform.elements[i].name.indexOf('whatfile')==0) {  # include_pdf - PDF files are included into the 
       document.forms.printform.elements[i].checked=false;  # output as follows:
             }  #  - The PDF, if necessary, is replicated.
         }  #  - The PDF is added to the list of files to convert to postscript (along with the images).
   #  - The LaTeX is added to include the final converted postscript in the file as an included
   #    job.  The assumption is that the includedpsheader.ps header will be included.
   #
   # Parameters:
   #   pdf_uri   - URI of the PDF file to include.
   #   
   # Returns:
   #  The LaTeX to include.
   #
   # Assumptions:
   #    The uri is actually a PDF file
   #    The postscript will have the includepsheader.ps included.
   #
   #
   sub include_pdf {
       my ($pdf_uri) = @_;
   
       # Where is the file? If not local we'll need to repcopy it:'
   
       my $file = &Apache::lonnet::filelocation('', $pdf_uri);
       if (! -e $file) {
    &Apache::lonnet::repcopy($file);
    $file = &Apache::lonnet::filelocation('',$pdf_uri);
     }      }
 </script>  
 <b>      #  The file isn ow replicated locally.. or it did not exist in the first place
 <input type=button onClick="checkall()" value="Check All">&nbsp;      # (unlikely).  If it did exist, add the pdf to the set of files/images that
 <input type=button onClick="uncheckall()" value="Uncheck">&nbsp;      # need tob e converted for this print job:
 <input type="submit" value="Submit">  
 <p>      $file =~ s|(.*)/res/|/home/httpd/html/res/|;
 ENDMENUOUT1  
     my $inc=0;       open(FILE,">>/home/httpd/prtspool/$env{'user.name'}_$env{'user.domain'}_printout.dat");
     for (my $i=0;$i<=$#master_seq_view;$i++) {      print FILE ("$file\n");
       if ($key_to==1 && $master_seq[$i]=~/\.(problem|exam|quiz|assess|survey|form|library)$/) {      close (FILE);
  $r->print('<br /><input type=checkbox name="whatfile'.$inc.'" value="'.$master_seq[$i].'"> '."\n".'<b>'.  
                   $titles_master_seq[$i].'</b>&nbsp;&nbsp;&nbsp;<small>'.$master_seq_view[$i].'</small>');      # Construct the special to put out.  To do this we need to get the
         $inc++;      # resulting filename after conversion.  The file will have the same name
     } elsif ($key_to==0 && $master_seq[$i]=~/\.(problem|exam|quiz|assess|survey|form|library|xml|htm|html|page)$/) {      # but will be in the user's spool directory with converted images.
  $r->print('<br /><input type=checkbox name="whatfile'.$inc.'" value="'.$master_seq[$i].'"> '."\n".'<b>'.  
                   $titles_master_seq[$i].'</b>&nbsp;&nbsp;&nbsp;<small>'.$master_seq_view[$i].'</small>');      my $dirname = "/home/httpd/prtspool/$env{'user.name'}/";
         $inc++;      my ( $base, $path,  $ext) = &fileparse($file, '.pdf');
       }  #    my $destname = $dirname.'/'.$base.'.eps'; # Not really an eps but easier in printout.pl
     }      $base =~ s/ /\_/g;
     $r->print(<<ENDMENUOUT2);  
 <br /><br />  
 <input type="hidden" name="numberoffiles" value="$inc">      my $output = &print_latex_header()."\\begin{document}\n";
 <input type="hidden" name="phase" value="three">      $output    .= '\special{ps: _begin_job_ ('
 <input type=button onClick="checkall()" value="Check All">&nbsp;   .$base.'.pdf.eps'.
 <input type=button onClick="uncheckall()" value="Uncheck">&nbsp;   ')run _end_job_}';
 <input type="submit" value="Submit">  
 ENDMENUOUT2      return $output;
   
   
 }  }
   
   
 sub problem_choice_menu {  #
     my $r = shift;  #   ssi_with_retries - Does the server side include of a resource.
     my $subdirtoprint = &Apache::lonnet::filelocation("",$ENV{'form.url'});  #                      if the ssi call returns an error we'll retry it up to
     $subdirtoprint =~ s/\/[^\/]+$//;  #                      the number of times requested by the caller.
     my @list_of_files = ();  #                      If we still have a proble, no text is appended to the
     my @content_directory = ();  #                      output and we set some global variables.
     $r->print("Subdir: " . $subdirtoprint . "<br />");  #                      to indicate to the caller an SSI error occurred.  
     if ($subdirtoprint =~ m|/home/([^/]+)/public_html|) {  #                      All of this is supposed to deal with the issues described
  #localmachine CSTR space  #                      in LonCAPA BZ 5631 see:
  my $user=$1;  #                      http://bugs.lon-capa.org/show_bug.cgi?id=5631
  my $domain=$Apache::lonnet::perlvar{'lonDefDomain'};  #                      by informing the user that this happened.
  @content_directory = &Apache::lonnet::dirlist($subdirtoprint,  #
       $domain, $user,'');  # Parameters:
     } else {  #   resource   - The resource to include.  This is passed directly, without
         #local library server res space (allows to print only from the own library server)  #                interpretation to lonnet::ssi.
  @content_directory = &Apache::lonnet::dirlist($subdirtoprint,$ENV{'user.domain'}, $ENV{'user.name'},'');  #   form       - The form hash parameters that guide the interpretation of the resource
     }  #                
     for (my $iy=0;$iy<=$#content_directory;$iy++) {  #   retries    - Number of retries allowed before giving up completely.
  my @tempo_array = split(/&/,$content_directory[$iy]);  # Returns:
  if ($tempo_array[0] =~ m/^[^\.]+\.(problem|exam|quiz|assess|survey|form|library)$/) {  #   On success, returns the rendered resource identified by the resource parameter.
     push(@list_of_files,$tempo_array[0]);  # Side Effects:
  }  #   The following global variables can be set:
     }  #    ssi_error                - If an unrecoverable error occurred this becomes true.
     $subdirtoprint =~ s/\/$//;  #                               It is up to the caller to initialize this to false
     for (my $i=0;$i<=$#list_of_files;$i++) {  #                               if desired.
  $list_of_files[$i] = $subdirtoprint.'/'.$list_of_files[$i];  #    ssi_last_error_resource  - If an unrecoverable error occurred, this is the value
     }  #                               of the resource that could not be rendered by the ssi
     $r->print(<<ENDMENUOUT1);  #                               call.
 <input type="hidden" name="url" value="$ENV{'form.url'}">  #    ssi_last_error           - The error string fetched from the ssi response
 <input type="hidden" name="choice" value="$ENV{'form.choice'}">  #                               in the event of an error.
 <input type="hidden" name="layout" value="$ENV{'form.layout'}">  #
 <input type="hidden" name="numberofcolumns" value="$ENV{'form.numberofcolumns'}">  sub ssi_with_retries {
 <h1>Mark problems which you want to print</h1>      my ($resource, $retries, %form) = @_;
 <script>  
     function checkall() {  
  for (i=0; i<document.forms.printform.elements.length; i++) {  
             if   
           (document.forms.printform.elements[i].name.indexOf('whattoprint')==0) {  
       document.forms.printform.elements[i].checked=true;  
             }  
         }  
     }  
   
   
     function uncheckall() {      my ($content, $response) = &Apache::loncommon::ssi_with_retries($resource, $retries, %form);
  for (i=0; i<document.forms.printform.elements.length; i++) {      if (!$response->is_success) {
             if    $ssi_error               = 1;
           (document.forms.printform.elements[i].name.indexOf('whattoprint')==0) {   $ssi_last_error_resource = $resource;
       document.forms.printform.elements[i].checked=false;   $ssi_last_error          = $response->code . " " . $response->message;
             }          $content='\section*{!!! An error occurred !!!}';
         }   &Apache::lonnet::logthis("Error in SSI resource: $resource Error: $ssi_last_error");
     }  
 </script>  
 <input type=button onClick="checkall()" value="Check All">&nbsp;  
 <input type=button onClick="uncheckall()" value="Uncheck">&nbsp;  
 <input type="submit" value="Submit">  
 <p>  
 ENDMENUOUT1  
     my $i=0;  
     foreach my $file (sort @list_of_files) {  
  $r->print('<br /><input type=checkbox name="whattoprint'.$i.'" value="'.$file.'"> '.  
                   $file);  
  $i++;  
     }      }
     $r->print(<<ENDMENUOUT2);  
 <br /><br />      return $content;
 <input type="hidden" name="papersize" value="$ENV{'form.papersize'}">  
 <input type="hidden" name="numberofproblems" value="$i">  
 <input type="hidden" name="phase" value="three">  
 <input type=button onClick="checkall()" value="Check All">&nbsp;  
 <input type=button onClick="uncheckall()" value="Uncheck">&nbsp;  
 <input type="submit" value="Submit">  
 ENDMENUOUT2  
 }  }
   
   sub get_student_view_with_retries {
       my ($curresline,$retries,$username,$userdomain,$courseid,$target,$moreenv)=@_;
   
 sub additional_class_menu {      my ($content, $response) = &Apache::loncommon::get_student_view_with_retries($curresline,$retries,$username,$userdomain,$courseid,$target,$moreenv);
     my $r = shift;      if (!$response->is_success) {
     $r->print(<<ENDMENUOUT1);          $ssi_error               = 1;
 <input type="hidden" name="url" value="$ENV{'form.url'}">          $ssi_last_error_resource = $curresline.' for user '.$username.':'.$userdomain;
 <input type="hidden" name="choice" value="$ENV{'form.choice'}">          $ssi_last_error          = $response->code . " " . $response->message;
 <input type="hidden" name="layout" value="$ENV{'form.layout'}">          $content='\section*{!!! An error occurred !!!}';
 <input type="hidden" name="numberofcolumns" value="$ENV{'form.numberofcolumns'}">          &Apache::lonnet::logthis("Error in SSI (student view) resource: $curresline Error: $ssi_last_error User: $username:$userdomain");
 <input type="hidden" name="assignment" value="$ENV{'form.assignment'}">  
 <h1>Select student(s) whose assignment you want to print</h1>  
 ENDMENUOUT1  
     my %courselist=&Apache::lonnet::dump(  
                    'classlist',  
    $ENV{'course.'.$ENV{'request.course.id'}.'.domain'},  
    $ENV{'course.'.$ENV{'request.course.id'}.'.num'});  
     my $now=time;  
     $r->print(<<ENDDISHEADER);  
 <script>  
     function checkall() {  
  for (i=0; i<document.forms.printform.elements.length; i++) {  
             if   
           (document.forms.printform.elements[i].name.indexOf('whomtoprint')==0) {  
       document.forms.printform.elements[i].checked=true;  
             }  
         }  
     }      }
       return $content;
   
     function checksec() {  }
  for (i=0; i<document.forms.printform.elements.length; i++) {  
             if   
           (document.forms.printform.elements[i].value.indexOf  
            (document.forms.printform.chksec.value)==0) {  
       document.forms.printform.elements[i].checked=true;  
             }  
         }  
     }  
   
     function uncheckall() {  #
  for (i=0; i<document.forms.printform.elements.length; i++) {  #   printf_style_subst  item format_string repl
             if   #  
           (document.forms.printform.elements[i].name.indexOf('whomtoprint')==0) {  # Does printf style substitution for a format string that
       document.forms.printform.elements[i].checked=false;  # 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 
 </script>  # substitution.
 <input type=button onClick="checkall()" value="Check All">&nbsp;  #
 <input type=button onClick="checksec()" value="Type Section/Group then click">  sub printf_style_subst {
 <input type=text size=5 name=chksec>&nbsp;      my ($item, $format_string, $repl) = @_;
 <input type=button onClick="uncheckall()" value="Uncheck">      my $result = "";
 <p>      while ($format_string =~ /(%)(\d*)\Q$item\E/g ) {
 ENDDISHEADER   my $fmt = $1;
     my $i = 0;   my $size = $2;
     foreach (sort keys %courselist) {   my $subst = $repl;
         my ($end,$start)=split(/\:/,$courselist{$_});   if ($size ne "") {
         my $active=1;      $subst = substr($subst, 0, $size);
         if (($end) && ($now>$end)) { $active=0; }      
         if ($active) {      #  Here's a nice edge case.. supose the end of the
            my ($sname,$sdom)=split(/\:/,$_);      #  substring is a \.  In that case may have  just
            my %reply=&Apache::lonnet::get('environment',      #  chopped off a TeX escape... in that case, we append
               ['firstname','middlename','lastname','generation'],      #   " " for the trailing character, and let the field 
               $sdom,$sname);      #  spill over a bit (sigh).
            my $section=&Apache::lonnet::usection      #  We don't just chop off the last character in order to deal
        ($sdom,$sname,$ENV{'request.course.id'});      #  with one last pathology, and that would be if substr had
            $r->print(      #  trimmed us to e.g. \\\  
         '<br /><input type=checkbox name="whomtoprint'.$i.'" value="'.$section.':'.$_.'"> '.  
       $reply{'firstname'}.' '.   
                       $reply{'middlename'}.' '.      if ($subst =~ /\\$/) {
                       $reply{'lastname'}.' '.   $subst .= " ";
                       $reply{'generation'}.      }
                       ' ('.$_.') '.$section);   }
    $i++;   my $item_pos = pos($format_string);
         }    $result .= substr($format_string, 0, $item_pos - length($size) -2) . $subst;
           $format_string = substr($format_string, pos($format_string));
     }      }
     $r->print(<<ENDMENUOUT2);  
 <br /><br /><br />  
 <table><tr><td width=300>Number of blank pages added to each student assignments to print these assignments on physically different sheets (<b>requires manual addjustment</b>): <select name="addedpages"><option selected>0</option>  
                                                                             <option>1</option>  
                                                                             <option>2</option>  
                                                                             <option>3</option>  
                                                   </select></td></tr></table>  
 <br />   
 <input type="hidden" name="papersize" value="$ENV{'form.papersize'}">  
 <input type="hidden" name="numberofstudents" value="$i">  
 <input type="hidden" name="phase" value="three">  
 <input type="submit" value="Submit">  
 ENDMENUOUT2  
 }  
   
       # Put the residual format string into the result:
   
 sub additional_print_menu {       $result .= $format_string;
     my $r = shift;  
     my $what_to_print = '';      return $result;
     for (my $i=0; $i<$ENV{'form.numberofstudents'};$i++) {  
  $what_to_print .= '<input type="hidden" name="whomtoprint'.$i.'" value="'.$ENV{'form.whomtoprint'.$i}.'">';  
     }  
     for (my $i=0; $i<$ENV{'form.numberofproblems'};$i++) {  
  $what_to_print .= '<input type="hidden" name="whattoprint'.$i.'" value="'.$ENV{'form.whattoprint'.$i}.'">';  
     }  
     for (my $i=0; $i<$ENV{'form.numberoffiles'};$i++) {  
  $what_to_print .= '<input type="hidden" name="whatfile'.$i.'" value="'.$ENV{'form.whatfile'.$i}.'">';  
     }  
     $r->print(<<ENDMENUOUT);  
     $what_to_print  
 <input type="hidden" name="url" value="$ENV{'form.url'}">  
 <input type="hidden" name="choice" value="$ENV{'form.choice'}">  
 <input type="hidden" name="layout" value="$ENV{'form.layout'}">  
 <input type="hidden" name="papersize" value="$ENV{'form.papersize'}">  
 <input type="hidden" name="numberofstudents" value="$ENV{'form.numberofstudents'}">  
 <input type="hidden" name="numberofproblems" value="$ENV{'form.numberofproblems'}">  
 <input type="hidden" name="numberoffiles" value="$ENV{'form.numberoffiles'}">  
 <input type="hidden" name="numberofcolumns" value="$ENV{'form.numberofcolumns'}">  
 <input type="hidden" name="assignment" value="$ENV{'form.assignment'}">  
 <input type="hidden" name="addedpages" value="$ENV{'form.addedpages'}">  
 Define one column layout parameters: <br />  
 <b>Width</b>: <input type="text" name="width" width="8" value="9cm"> <br />  
 <b>Height</b>: <input type="text" name="height" width="8" value="25.9cm"> <br />  
 <b>Left margin</b>: <input type="text" name="leftmargin" width="8" value="-0.57in"> <br />  
 <input type="hidden" name="phase" value="four">  
 <input type="submit" value="Submit">  
 </form>  
 </body>  
 </html>  
 ENDMENUOUT  
 }  }
   
   
 sub output_data {  # Format a header according to a format.  
     my $r = shift;  # 
     $r->print(<<ENDPART);  
 <html>  # Substitutions:
 <head>  #     %a    - Assignment name.
 <title>LON-CAPA output for printing</title>  #     %c    - Course name.
 </head>  #     %n    - Student name.
 <body bgcolor="FFFFFF">  #     %s    - The section if it is supplied.
 <hr>  #
 ENDPART  sub format_page_header {
       my ($width, $format, $assignment, $course, $student, $section) = @_;
   
       
       $width = &recalcto_mm($width); # Get width in mm.
       #  Default format?
   
       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';
           
   
     my $choice = $ENV{'form.choice'};  
     my $layout = $ENV{'form.layout'};  
     my $numberofcolumns = $ENV{'form.numberofcolumns'};    
     my $papersize = $ENV{'form.papersize'};            
     my $laystyle = 'book';  
     my $assignment =  $ENV{'form.assignment'};  
     if ($choice eq 'Subdirectory print') {  
  if ($ENV{'form.layout'} eq '') {$layout = 'CAPA';}  
  if ($ENV{'form.papersize'} eq '') {$papersize = 'Letter [8 1/2x11 in]';}  
  if ($ENV{'form.numberofcolumns'} eq '') {$numberofcolumns = 2;}  
     }  
     if (($choice eq 'Standard LaTeX output for current document') &&  
  ($ENV{'form.url'}=~m|^/~|)) {  
  if ($ENV{'form.layout'} eq '') {$layout = 'CAPA';}  
  if ($ENV{'form.papersize'} eq '') {$papersize = 'Letter [8 1/2x11 in]';}  
  if ($ENV{'form.numberofcolumns'} eq '') {$numberofcolumns = 2;}  
     }      }
     my $result = '';      # An open question is how to handle long user formatted page headers...
     my $number_of_columns = 1; #used only for pages to determine the width of the cell      # A possible future is to support e.g. %na so that the user can control
     my $selectionmade = '';      # the truncation of the elements that can appear in the header.
     my ($textwidth,$textheight,$oddoffset,$evenoffset) = &page_format($papersize,$layout,$numberofcolumns);      #
     if ($numberofcolumns == 1) {      $format =  &printf_style_subst("a", $format, $assignment);
  $textwidth=$ENV{'form.width'};      $format =  &printf_style_subst("c", $format, $course);
  $textheight=$ENV{'form.height'};      $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/;
     }      }
     my $LaTeXwidth;       
     if ($textwidth=~/(\d+\s*cm)/) {  
  $LaTeXwidth = $1*10;      return $format;
     } elsif ($textwidth=~/(\d+\s*mm)/) {      
  $LaTeXwidth = $1;  }
   
   #
   #   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{$letter};
     }      }
     if ($choice eq 'Standard LaTeX output for current document') {      return $result;
       #-- single document - problem, page, html, xml, ...    }
       $selectionmade = 1;  
       if ($ENV{'form.url'}=~/\.(problem|exam|quiz|assess|survey|form|library|page|xml|html|htm|xhtml|xhtm)$/) {  #  Determine if a code is a valid numeric code.  Valid
         my %moreenv;  #  numeric codes must be comprised entirely of digits and
         $moreenv{'form.grade_target'}='tex';  #  have a correct number of digits.
         if (&Apache::lonnet::allowed('bre',$ENV{'form.url'})) {  #
   $ENV{'form.url'}=~s/http:\/\/[^\/]+//;  #  Parameters:
         }  #     value      - proposed code value.
         $moreenv{'request.filename'}=$ENV{'form.url'};  #     num_digits - Number of digits required.
         $moreenv{'form.textwidth'}=$LaTeXwidth;  #
         &Apache::lonnet::appenv(%moreenv);  sub is_valid_numeric_code {
         my $texversion=&Apache::lonnet::ssi($ENV{'form.url'});      my ($value, $num_digits) = @_;
         &Apache::lonnet::delenv('form.grade_target','form.textwidth','form.counter');      #   Remove leading/trailing whitespace;
         $result .= $texversion;      $value =~ s/^\s*//g;
         if ($ENV{'form.url'}=~m/\.page\s*$/) {      $value =~ s/\s*$//g;
   ($result,$number_of_columns) = &page_cleanup($result);      
         }      #  All digits?
       } else {      if ($value !~ /^[0-9]+$/) {
   $result='\documentclass[letterpaper]{article}\usepackage{calc}\begin{document}Printout of this type of document is currently not supported: ';   return "Numeric code $value has invalid characters - must only be digits";
   if ($ENV{'form.url'}=~/\/(aboutme|syllabus|bulletinboard|smppg)$/) {  
       $result.=$1;  
   } else {  
       $result.=$ENV{'form.url'};  
   }  
   $result.=' \end{document}'  
       }  
     } elsif ($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?  
         my @master_seq = ();  
  for (my $i=0; $i<$ENV{'form.numberoffiles'};$i++) {  
     if ($ENV{'form.whatfile'.$i}=~/\S/) {  
  push @master_seq,$ENV{'form.whatfile'.$i};  
     }  
  }  
         #-- produce an output string  
  my $flag_latex_header_remove = 'NO';  
  my $flag_page_in_sequence = 'NO';  
  for (my $i=0;$i<=$#master_seq;$i++) {  
            my ($urlp,$symb) = split /&&/, $master_seq[$i];  
     if ($choice eq 'Standard LaTeX output for the primary sequence') {  
               $selectionmade = 2;  
     } elsif ($choice eq 'Standard LaTeX output for whole primary sequence') {  
               $selectionmade = 3;  
     }  
    my %moreenv;  
    $moreenv{'form.grade_target'}='tex';  
    $moreenv{'form.textwidth'}=$LaTeXwidth;  
    &Apache::lonnet::appenv(%moreenv);  
    #&Apache::lonnet::logthis("Trying to get $urlp with symb $symb");  
    my $texversion=&Apache::lonnet::ssi($urlp,('symb'=>$symb));  
    &Apache::lonnet::delenv('form.grade_target','form.textwidth');  
    if ($urlp =~ m/\.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}/;  
      $flag_page_in_sequence = 'YES';  
    }   
    if ($flag_latex_header_remove ne 'NO') {  
      $texversion = &latex_header_footer_remove($texversion);  
    } else {  
      $texversion =~ s/\\end{document}//;  
    }  
    $result .= $texversion;           
    $flag_latex_header_remove = 'YES';     
  }  
  &Apache::lonnet::delenv('form.counter');  
  if ($flag_page_in_sequence eq 'YES') {$result =~ s/\\usepackage{calc}/\\usepackage{calc}\\usepackage{longtable}/;}  
  $result .= '\end{document}';  
     }  elsif ($choice eq 'Standard LaTeX output for the top level sequence') {  
         # where is the main sequence of the course?  
  $selectionmade = 4;  
  my $main_seq;  
  if ($ENV{'request.course.uri'}=~/\/?uploaded\//) {  
     $main_seq = $ENV{'request.course.uri'};  
  } else {  
     $main_seq = '/res/'.$ENV{'request.course.uri'};  
  }  
  my @file_seq = &coming_from_hash($main_seq);  
  for (my $i=0;$i<=$#file_seq;$i++) {  
     my ($path,$title,$symb) = split /&&/,$file_seq[$i];  
     $file_seq[$i] = $path.'&&'.$symb;  
  }  
  my $flag_latex_header_remove = 'NO';  
         #-- produce an output string  
  for (my $i=0;$i<=$#file_seq;$i++) {  
    if (not $file_seq[$i]=~/^&&/) {  
      my ($urlp,$symb) = split /&&/, $file_seq[$i];  
      $urlp=~s/\/home\/httpd\/html//;      
      if ($urlp=~m/\.(problem|exam|quiz|assess|survey|form|library)/) {  
  my %moreenv;  
  $moreenv{'form.grade_target'}='tex';  
  $moreenv{'form.textwidth'}=$LaTeXwidth;  
  &Apache::lonnet::appenv(%moreenv);  
  my $texversion=&Apache::lonnet::ssi($urlp,('symb'=>$symb));  
  &Apache::lonnet::delenv('form.grade_target','form.textwidth');      
  if ($flag_latex_header_remove ne 'NO') {  
     $texversion = &latex_header_footer_remove($texversion);  
  } else {  
     $texversion =~ s/\\end{document}//;  
  }  
  $result .= $texversion;    
  $flag_latex_header_remove = 'YES';  
      }  
    }  
  }      
  $result .= '\end{document}';  
     } elsif ($choice eq 'All class print') {   
     #-- prints assignments for whole class or for selected students    
  $selectionmade = 5;  
         my @students = ();  
  for (my $i=0; $i<$ENV{'form.numberofstudents'};$i++) {  
     if ($ENV{'form.whomtoprint'.$i}=~/:/) {  
  push @students,$ENV{'form.whomtoprint'.$i};  
     }  
  }  
  #where is the primary sequence containing current resource (the same for all students)?  
  my $symbolic = &Apache::lonnet::symbread($ENV{'form.url'});  
  my @sequence = split('___',$symbolic);  
  my $primary_sequence;  
  if ($sequence[0]=~/^uploaded/) {$primary_sequence = '/'.$sequence[0];}   
           else {$primary_sequence = '/res/'.$sequence[0];}    
  my @master_seq = &coming_from_hash($primary_sequence);   
  for (my $i=0;$i<=$#master_seq;$i++) {  
     my ($path,$title,$symb) = split /&&/,$master_seq[$i];  
     $master_seq[$i] = $path.'&&'.$symb;  
  }  
         #loop over students  
  my $flag_latex_header_remove = 'NO';   
  my %moreenv;  
  $moreenv{'form.textwidth'}=$LaTeXwidth;  
  &Apache::lonnet::appenv(%moreenv);  
  foreach my $person (@students) {  
     my $current_output = '';   
     my ($usersection,$username,$userdomain) = split /:/,$person;  
     my $fullname = &Apache::grades::get_fullname($username,$userdomain);      
             #goes through all resources, checks if they are available for current student, and produces output     
     foreach my $curresline (@master_seq)  {  
  my ($curres,$symb) = split /&&/, $curresline;  
                 if ($curres=~ m/\.(problem|exam|quiz|assess|survey|form|library)/) {  
     my ($map,$id,$res_url) = split(/___/,$symb);  
     if (&Apache::lonnet::allowed('bre',$res_url)) {  
  my $rendered = &Apache::loncommon::get_student_view($symb,$username,$userdomain,  
                                                                         $ENV{'request.course.id'},'tex');  
  if ($flag_latex_header_remove eq 'YES') {  
     $rendered = &latex_header_footer_remove($rendered);  
  } else {  
     $rendered =~ s/\\end{document}//;  
  }  
  $current_output .= $rendered;  
     }  
     $flag_latex_header_remove = 'YES';  
  }  
     }  
     my $courseidinfo = $ENV{'course.'.$ENV{'request.course.id'}.'.description'};  
     if ($current_output=~/\\documentclass/) {  
  $current_output =~ s/\\begin{document}/\\setlength{\\topmargin}{1cm}\\usepackage{fancyhdr}\\pagestyle{fancy}\\rhead{}\\chead{} \\begin{document}\\noindent\\lhead{\\textit{\\textbf{$fullname}} - $courseidinfo \\hfill \\thepage \\\\ \\textit{$assignment}}\\vskip 3 mm /;  
     } else {  
  my $blanspages = '';  
  for (my $j=0;$j<$ENV{'form.addedpages'};$j++) {$blanspages.='\clearpage\strut\clearpage';}  
  $current_output = '\strut\\newline\\noindent\\makebox[\\textwidth/$number_of_columns][b]{\\hrulefill}\\newline\\noindent{\\tiny Printed from LON-CAPA\\copyright MSU{\\hfill} Licensed under GNU General Public License }\\newpage \\vskip 3mm'.$blanspages.'\setcounter{page}{1}\noindent\parbox{\minipagewidth}{\noindent\\lhead{\\textit{\\textbf{'.$fullname.'}} - '.$courseidinfo.' \\hfill \\thepage \\\\ \\textit{'.$assignment.'}}\hskip 1.4in } \vskip 5 mm '.$current_output;  
     }  
     $result .= $current_output;  
     &Apache::lonnet::delenv('form.counter');      
     &Apache::lonxml::init_counter();   
  }  
  $result .= '\end{document}';  
  &Apache::lonnet::delenv('form.textwidth');  
     } elsif ($choice eq 'Subdirectory print') {        
     #prints selected problems from the subdirectory   
  $selectionmade = 6;  
         my @list_of_files = ();  
  for (my $i=0; $i<$ENV{'form.numberofproblems'};$i++) {  
     if ($ENV{'form.whattoprint'.$i}=~/^\//) {  
  push @list_of_files,$ENV{'form.whattoprint'.$i};  
     }  
  }  
  my $flag_latex_header_remove = 'NO';    
  for (my $i=0;$i<=$#list_of_files;$i++) {  
     my $urlp = $list_of_files[$i];  
     if ($urlp=~/\//) {  
  my %moreenv;  
  $moreenv{'form.grade_target'}='tex';  
  $moreenv{'form.textwidth'}=$LaTeXwidth;  
  &Apache::lonnet::appenv(%moreenv);  
  if ($urlp =~ m|/home/([^/]+)/public_html|) {  
     $urlp =~ s|/home/([^/]*)/public_html|/~$1|;  
  } else {  
     $urlp =~ s|^/home/httpd/html||;  
  }  
  my $texversion=&Apache::lonnet::ssi($urlp);  
  &Apache::lonnet::delenv('form.grade_target','form.textwidth');  
                 #this chunck is responsible for printing the path to problem  
  my $newurlp = '';  
  my $HowMany = length($urlp)*2;  
  if ($HowMany > $LaTeXwidth) {  
     my @temporrary = split '/',$urlp;  
     my $HowManyNew = 0;  
     for (my $ii=0;$ii<=$#temporrary;$ii++) {  
  if ($temporrary[$ii] ne '') {  
     $HowManyNew += length($temporrary[$ii])*2;  
     if ($HowManyNew < $LaTeXwidth ) {  
  $newurlp .=  '/'.$temporrary[$ii];  
     } else {  
  $HowManyNew = 0;  
  $newurlp .=  '|\vskip -1 mm \noindent \verb|';  
  $ii--;  
     }  
  }  
     }  
  }  
  $texversion =~ s/(\\begin{minipage}{\\textwidth})/$1 {\\small\\noindent\\verb|$newurlp\|\\vskip 0 mm}/;  
  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';    
  }  
  $result .= '\end{document}';        
     }      }
 #-------------------------------------------------------- corrections for the different page formats      if (length($value) != $num_digits) {
     $result = &page_format_transformation($papersize,$layout,$numberofcolumns,$choice,$result,$assignment);   return "Numeric code $value incorrect number of digits (correct = $num_digits)";
     if ($layout eq 'CBI') {  
         $laystyle = 'album';  
     }  
     $result = &latex_corrections($number_of_columns,$result);  
     #changes page's parameters for the one column output   
     if ($ENV{'form.numberofcolumns'} == 1) {  
  $result =~ s/\\textwidth= 9cm/\\textwidth= $ENV{'form.width'}/;  
  $result =~ s/\\textheight 25\.9cm/\\textheight $ENV{'form.height'}/;  
  $result =~ s/\\evensidemargin = -0\.57in/\\evensidemargin= $ENV{'form.leftmargin'}/;  
  $result =~ s/\\oddsidemargin = -0\.57in/\\oddsidemargin= $ENV{'form.leftmargin'}/;  
     }      }
 #-- writing .tex file in prtspool       return undef;
     my $temp_file;  
     my $filename = "/home/httpd/prtspool/$ENV{'user.name'}_$ENV{'user.domain'}_printout_".time."_".rand(10000000).".tex";  
     unless ($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&$laystyle&$numberofcolumns&$selectionmade">  
 </body>  
 </html>  
 FINALEND  
 }  }
   #   Determines if a code is a valid alhpa code.  Alpha codes
   #   are ciphers that map  [A-J,a-j] -> 0..9 0..9.
   #   They also have a correct digit count.
   # Parameters:
   #     value          - Proposed code value.
   #     num_letters    - correct number of letters.
   # Note:
   #    leading and trailing whitespace are ignored.
   #
   sub is_valid_alpha_code {
       my ($value, $num_letters) = @_;
       
        # strip leading and trailing spaces.
   
       $value =~ s/^\s*//g;
       $value =~ s/\s*$//g;
   
 sub coming_from_hash {      #  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;
   }
   
     my $mainsequence = shift;  #   Determine if a code entered by the user in a helper is valid.
     my @resourcelist = ();  #   valid depends on the code type and the type of code selected.
     my $mapid = $hash{'map_pc_'.$mainsequence};  #   The type of code selected can either be numeric or 
     my $mapstart = $hash{'map_start_'.$mainsequence};  #   Alphabetic.  If alphabetic, the code, in fact is a simple
     my $mapfinish = $hash{'map_finish_'.$mainsequence};  #   substitution cipher for the actual numeric code: 0->A, 1->B ...
     my $current_resource = $mapstart;  #   We'll be nice and be case insensitive for alpha codes.
     while ($current_resource ne $mapfinish) {  # Parameters:
  if ($hash{'src_'.$current_resource}=~/\.sequence$/) {  #    code_value    - the value of the code the user typed in.
     push @resourcelist,&coming_from_hash($hash{'src_'.$current_resource});  #    code_option   - The code type selected from the set in the scantron format
  } else {  #                    table.
     my $presymb;   # Returns:
     if ($mainsequence =~ /\/res\/(.*)$/) {$presymb = $1;}   #    undef         - The code is valid.
               elsif ($mainsequence =~ /\/?(uploaded\/(.*))$/) {$presymb = $1;}   #    other         - An error message indicating what's wrong.
     my $rid = $current_resource;  #
     if ($rid=~/,/) {  sub is_code_valid {
  my @rid = split /,/, $rid;      my ($code_value, $code_option) = @_;
  foreach my $rid_element (@rid) {      my ($code_type, $code_length) = ('letter', 6); # defaults.
     if ($rid_element =~ m/^$mapid\.(\d*)/) {      my @lines = &Apache::grades::get_scantronformat_file();
  $rid = $1;       foreach my $line (@lines) {
  last;   my ($name, $type, $length) = (split(/:/, $line))[0,2,4];
     }   if($name eq $code_option) {
  }      $code_length = $length;
     } else {      if($type eq 'number') {
         $rid =~ m/^$mapid\.(\d*)/;   $code_type = 'number';
                 $rid = $1;    
     }  
     $hash{'src_'.$current_resource} =~ m/\/res\/(.*)$/;  
     my $symb = $presymb.'___'.$rid.'___'.$1;      
     push @resourcelist,$hash{'src_'.$current_resource}.'&&'.$hash{'title_'.$current_resource}.'&&'.$symb;  
  }  
  $current_resource = $hash{'goesto_'.$hash{'to_'.$current_resource}};  
     }   
     #needs if final resource in the map (type="finish") contains something  
  if ($hash{'src_'.$current_resource}=~/\.sequence$/) {  
     push @resourcelist,&coming_from_hash($hash{'src_'.$current_resource});  
  } else {  
     my $presymb;   
     if ($mainsequence =~ /\/res\/(.*)$/) {$presymb = $1;}   
               elsif ($mainsequence =~ /\/?(uploaded\/(.*))$/) {$presymb = $1;}   
     my $rid = $current_resource;  
     if ($rid=~/,/) {  
  my @rid = split /,/, $rid;  
  foreach my $rid_element (@rid) {  
     if ($rid_element =~ m/^$mapid\.(\d*)/) {  
  $rid = $1;   
  last;  
     }  
  }  
     } else {  
         $rid =~ m/^$mapid\.(\d*)/;  
                 $rid = $1;    
     }      }
     $hash{'src_'.$current_resource} =~ m/\/res\/(.*)$/;  
     my $symb = $presymb.'___'.$rid.'___'.$1;      
     push @resourcelist,$hash{'src_'.$current_resource}.'&&'.$hash{'title_'.$current_resource}.'&&'.$symb;  
  }   }
  $current_resource = $hash{'goesto_'.$hash{'to_'.$current_resource}};      }
     return @resourcelist;      my $valid;
       if ($code_type eq 'number') {
    return &is_valid_numeric_code($code_value, $code_length);
       } else {
    return &is_valid_alpha_code($code_value, $code_length);
       }
   
 }  }
   
   #   Compare two students by name.  The students are in the form
   #   returned by the helper:
   #      user:domain:section:last,   first:status
   #   This is a helper function for the perl sort built-in  therefore:
   # Implicit Inputs:
   #    $a     - The first element to compare (global)
   #    $b     - The second element to compare (global)
   # Returns:
   #   -1   - $a < $b
   #    0   - $a == $b
   #   +1   - $a > $b
   #   Note that the initial comparison is done on the last names with the
   #   first names only used to break the tie.
   #
   #
   sub compare_names {
       #  First split the names up into the primary fields.
   
       my ($u1, $d1, $s1, $n1, $stat1) = split(/:/, $a);
       my ($u2, $d2, $s2, $n2, $stat2) = split(/:/, $b);
   
       # Now split the last name and first name of each n:
       #
   
       my ($l1,$f1) = split(/,/, $n1);
       my ($l2,$f2) = split(/,/, $n2);
   
       # We don't bother to remove the leading/trailing whitespace from the
       # firstname, unless the last names compare identical.
   
       if($l1 lt $l2) {
    return -1;
       }
       if($l1 gt $l2) {
    return  1;
       }
   
       # Break the tie on the first name, but there are leading (possibly trailing
       # whitespaces to get rid of first 
       #
       $f1 =~ s/^\s+//; # Remove leading...
       $f1 =~ s/\s+$//; # Trailing spaces from first 1...
       
       $f2 =~ s/^\s+//;
       $f2 =~ s/\s+$//; # And the same for first 2...
   
       if($f1 lt $f2) {
    return -1;
       }
       if($f1 gt $f2) {
    return 1;
       }
       
       #  Must be the same name.
   
       return 0;
   }
   
 sub latex_header_footer_remove {  sub latex_header_footer_remove {
     my $text = shift;      my $text = shift;
Line 799  sub latex_header_footer_remove { Line 537  sub latex_header_footer_remove {
     $text =~ s/\\documentclass([^&]*)\\begin{document}//;      $text =~ s/\\documentclass([^&]*)\\begin{document}//;
     return $text;      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";
   
       }
   }
   
   
 sub character_chart {  sub character_chart {
       my $result = shift;
       return  &Apache::entities::replace_entities($result);
   }
   
   sub old_character_chart {
     my $result = shift;      my $result = shift;
     $result =~ s/&\#0?0?(7|9);//g;      $result =~ s/&\#0?0?(7|9);//g;
     $result =~ s/&\#0?(10|13);//g;      $result =~ s/&\#0?(10|13);//g;
Line 834  sub character_chart { Line 618  sub character_chart {
     $result =~ s/&\#0?58;/:/g;      $result =~ s/&\#0?58;/:/g;
     $result =~ s/&\#0?59;/;/g;      $result =~ s/&\#0?59;/;/g;
     $result =~ s/&(\#0?60|lt|\#139);/\$<\$/g;      $result =~ s/&(\#0?60|lt|\#139);/\$<\$/g;
     $result =~ s/&\#0?61;/\$=\$/g;      $result =~ s/&\#0?61;/\\ensuremath\{=\}/g;
     $result =~ s/&(\#0?62|gt|\#155);/\$>\$/g;      $result =~ s/&(\#0?62|gt|\#155);/\\ensuremath\{>\}/g;
     $result =~ s/&\#0?63;/\?/g;      $result =~ s/&\#0?63;/\?/g;
     $result =~ s/&\#0?65;/A/g;      $result =~ s/&\#0?65;/A/g;
     $result =~ s/&\#0?66;/B/g;      $result =~ s/&\#0?66;/B/g;
Line 864  sub character_chart { Line 648  sub character_chart {
     $result =~ s/&\#0?89;/Y/g;      $result =~ s/&\#0?89;/Y/g;
     $result =~ s/&\#0?90;/Z/g;      $result =~ s/&\#0?90;/Z/g;
     $result =~ s/&\#0?91;/[/g;      $result =~ s/&\#0?91;/[/g;
     $result =~ s/&\#0?92;/\$\\setminus\$/g;      $result =~ s/&\#0?92;/\\ensuremath\{\\setminus\}/g;
     $result =~ s/&\#0?93;/]/g;      $result =~ s/&\#0?93;/]/g;
     $result =~ s/&\#(0?94|136);/\$\\wedge\$/g;      $result =~ s/&\#(0?94|136);/\\ensuremath\{\\wedge\}/g;
     $result =~ s/&\#(0?95|138|154);/\\underline{\\makebox[2mm]{\\strut}}/g;      $result =~ s/&\#(0?95|138|154);/\\underline{\\makebox[2mm]{\\strut}}/g;
     $result =~ s/&\#(0?96|145);/\`/g;      $result =~ s/&\#(0?96|145);/\`/g;
     $result =~ s/&\#0?97;/a/g;      $result =~ s/&\#0?97;/a/g;
Line 901  sub character_chart { Line 685  sub character_chart {
     $result =~ s/&\#126;/\~/g;      $result =~ s/&\#126;/\~/g;
     $result =~ s/&\#131;/\\textflorin /g;      $result =~ s/&\#131;/\\textflorin /g;
     $result =~ s/&\#132;/\"/g;      $result =~ s/&\#132;/\"/g;
     $result =~ s/&\#133;/\$\\ldots\$/g;      $result =~ s/&\#133;/\\ensuremath\{\\ldots\}/g;
     $result =~ s/&\#134;/\$\\dagger\$/g;      $result =~ s/&\#134;/\\ensuremath\{\\dagger\}/g;
     $result =~ s/&\#135;/\$\\ddagger\$/g;      $result =~ s/&\#135;/\\ensuremath\{\\ddagger\}/g;
     $result =~ s/&\#137;/\\textperthousand /g;      $result =~ s/&\#137;/\\textperthousand /g;
     $result =~ s/&\#140;/{\\OE}/g;      $result =~ s/&\#140;/{\\OE}/g;
     $result =~ s/&\#147;/\`\`/g;      $result =~ s/&\#147;/\`\`/g;
     $result =~ s/&\#148;/\'\'/g;      $result =~ s/&\#148;/\'\'/g;
     $result =~ s/&\#149;/\$\\bullet\$/g;      $result =~ s/&\#149;/\\ensuremath\{\\bullet\}/g;
     $result =~ s/&\#150;/--/g;      $result =~ s/&(\#150|\#8211);/--/g;
     $result =~ s/&\#151;/---/g;      $result =~ s/&\#151;/---/g;
     $result =~ s/&\#152;/\$\\sim\$/g;      $result =~ s/&\#152;/\\ensuremath\{\\sim\}/g;
     $result =~ s/&\#153;/\\texttrademark /g;      $result =~ s/&\#153;/\\texttrademark /g;
     $result =~ s/&\#156;/\\oe/g;      $result =~ s/&\#156;/\\oe/g;
     $result =~ s/&\#159;/\\\"Y/g;      $result =~ s/&\#159;/\\\"Y/g;
     $result =~ s/&(\#160|nbsp);//g;      $result =~ s/&(\#160|nbsp);/~/g;
     $result =~ s/&(\#161|iexcl);/!\`/g;      $result =~ s/&(\#161|iexcl);/!\`/g;
     $result =~ s/&(\#162|cent);/\\textcent /g;      $result =~ s/&(\#162|cent);/\\textcent /g;
     $result =~ s/&(\#163|pound);/\\pounds /g;       $result =~ s/&(\#163|pound);/\\pounds /g; 
Line 923  sub character_chart { Line 707  sub character_chart {
     $result =~ s/&(\#165|yen);/\\textyen /g;      $result =~ s/&(\#165|yen);/\\textyen /g;
     $result =~ s/&(\#166|brvbar);/\\textbrokenbar /g;      $result =~ s/&(\#166|brvbar);/\\textbrokenbar /g;
     $result =~ s/&(\#167|sect);/\\textsection /g;      $result =~ s/&(\#167|sect);/\\textsection /g;
     $result =~ s/&(\#168|uml);/\\texthighdieresis /g;      $result =~ s/&(\#168|uml);/\\"\{\} /g;
     $result =~ s/&(\#169|copy);/\\copyright /g;      $result =~ s/&(\#169|copy);/\\copyright /g;
     $result =~ s/&(\#170|ordf);/\\textordfeminine /g;      $result =~ s/&(\#170|ordf);/\\textordfeminine /g;
     $result =~ s/&(\#172|not);/\$\\neg\$/g;      $result =~ s/&(\#172|not);/\\ensuremath\{\\neg\}/g;
     $result =~ s/&(\#173|shy);/ - /g;      $result =~ s/&(\#173|shy);/ - /g;
     $result =~ s/&(\#174|reg);/\\textregistered /g;      $result =~ s/&(\#174|reg);/\\textregistered /g;
     $result =~ s/&(\#175|macr);/\$^{-}\$/g;      $result =~ s/&(\#175|macr);/\\ensuremath\{^{-}\}/g;
     $result =~ s/&(\#176|deg);/\$^{\\circ}\$/g;      $result =~ s/&(\#176|deg);/\\ensuremath\{^{\\circ}\}/g;
     $result =~ s/&(\#177|plusmn);/\$\\pm\$/g;      $result =~ s/&(\#177|plusmn);/\\ensuremath\{\\pm\}/g;
     $result =~ s/&(\#178|sup2);/\$^2\$/g;      $result =~ s/&(\#178|sup2);/\\ensuremath\{^2\}/g;
     $result =~ s/&(\#179|sup3);/\$^3\$/g;      $result =~ s/&(\#179|sup3);/\\ensuremath\{^3\}/g;
     $result =~ s/&(\#180|acute);/\\textacute /g;      $result =~ s/&(\#180|acute);/\\'\{\} /g;
     $result =~ s/&(\#181|micro);/\$\\mu\$/g;      $result =~ s/&(\#181|micro);/\\ensuremath\{\\mu\}/g;
     $result =~ s/&(\#182|para);/\\P/g;      $result =~ s/&(\#182|para);/\\P/g;
     $result =~ s/&(\#183|middot);/\$\\cdot\$/g;      $result =~ s/&(\#183|middot);/\\ensuremath\{\\cdot\}/g;
     $result =~ s/&(\#184|cedil);/\\c{\\strut}/g;      $result =~ s/&(\#184|cedil);/\\c{\\strut}/g;
     $result =~ s/&(\#185|sup1);/\$^1\$/g;      $result =~ s/&(\#185|sup1);/\\ensuremath\{^1\}/g;
     $result =~ s/&(\#186|ordm);/\\textordmasculine /g;      $result =~ s/&(\#186|ordm);/\\textordmasculine /g;
     $result =~ s/&(\#188|frac14);/\\textonequarter /g;      $result =~ s/&(\#188|frac14);/\\textonequarter /g;
     $result =~ s/&(\#189|frac12);/\\textonehalf /g;      $result =~ s/&(\#189|frac12);/\\textonehalf /g;
Line 967  sub character_chart { Line 751  sub character_chart {
     $result =~ s/&(\#212|Ocirc);/\\^{O}/g;      $result =~ s/&(\#212|Ocirc);/\\^{O}/g;
     $result =~ s/&(\#213|Otilde);/\\~{O}/g;      $result =~ s/&(\#213|Otilde);/\\~{O}/g;
     $result =~ s/&(\#214|Ouml);/\\\"{O}/g;          $result =~ s/&(\#214|Ouml);/\\\"{O}/g;    
     $result =~ s/&(\#215|times);/\$\\times\$/g;      $result =~ s/&(\#215|times);/\\ensuremath\{\\times\}/g;
     $result =~ s/&(\#216|Oslash);/{\\O}/g;      $result =~ s/&(\#216|Oslash);/{\\O}/g;
     $result =~ s/&(\#217|Ugrave);/\\\`{U}/g;          $result =~ s/&(\#217|Ugrave);/\\\`{U}/g;    
     $result =~ s/&(\#218|Uacute);/\\\'{U}/g;      $result =~ s/&(\#218|Uacute);/\\\'{U}/g;
     $result =~ s/&(\#219|Ucirc);/\\^{U}/g;      $result =~ s/&(\#219|Ucirc);/\\^{U}/g;
     $result =~ s/&(\#220|Uuml);/\\\"{U}/g;      $result =~ s/&(\#220|Uuml);/\\\"{U}/g;
     $result =~ s/&(\#221|Yacute);/\\\'{Y}/g;      $result =~ s/&(\#221|Yacute);/\\\'{Y}/g;
     $result =~ s/&(\#223|szlig);/\\ss/g;      $result =~ s/&(\#223|szlig);/{\\ss}/g;
     $result =~ s/&(\#224|agrave);/\\\`{a}/g;      $result =~ s/&(\#224|agrave);/\\\`{a}/g;
     $result =~ s/&(\#225|aacute);/\\\'{a}/g;      $result =~ s/&(\#225|aacute);/\\\'{a}/g;
     $result =~ s/&(\#226|acirc);/\\^{a}/g;      $result =~ s/&(\#226|acirc);/\\^{a}/g;
Line 991  sub character_chart { Line 775  sub character_chart {
     $result =~ s/&(\#237|iacute);/\\\'{i}/g;      $result =~ s/&(\#237|iacute);/\\\'{i}/g;
     $result =~ s/&(\#238|icirc);/\\^{i}/g;      $result =~ s/&(\#238|icirc);/\\^{i}/g;
     $result =~ s/&(\#239|iuml);/\\\"{i}/g;      $result =~ s/&(\#239|iuml);/\\\"{i}/g;
     $result =~ s/&(\#240|eth);/\$\\partial\$/g;      $result =~ s/&(\#240|eth);/\\ensuremath\{\\partial\}/g;
     $result =~ s/&(\#241|ntilde);/\\~{n}/g;      $result =~ s/&(\#241|ntilde);/\\~{n}/g;
     $result =~ s/&(\#242|ograve);/\\\`{o}/g;      $result =~ s/&(\#242|ograve);/\\\`{o}/g;
     $result =~ s/&(\#243|oacute);/\\\'{o}/g;      $result =~ s/&(\#243|oacute);/\\\'{o}/g;
     $result =~ s/&(\#244|ocirc);/\\^{o}/g;      $result =~ s/&(\#244|ocirc);/\\^{o}/g;
     $result =~ s/&(\#245|otilde);/\\~{o}/g;      $result =~ s/&(\#245|otilde);/\\~{o}/g;
     $result =~ s/&(\#246|ouml);/\\\"{o}/g;      $result =~ s/&(\#246|ouml);/\\\"{o}/g;
     $result =~ s/&(\#247|divide);/\$\\div\$/g;      $result =~ s/&(\#247|divide);/\\ensuremath\{\\div\}/g;
     $result =~ s/&(\#248|oslash);/{\\o}/g;      $result =~ s/&(\#248|oslash);/{\\o}/g;
     $result =~ s/&(\#249|ugrave);/\\\`{u}/g;       $result =~ s/&(\#249|ugrave);/\\\`{u}/g; 
     $result =~ s/&(\#250|uacute);/\\\'{u}/g;      $result =~ s/&(\#250|uacute);/\\\'{u}/g;
Line 1006  sub character_chart { Line 790  sub character_chart {
     $result =~ s/&(\#252|uuml);/\\\"{u}/g;      $result =~ s/&(\#252|uuml);/\\\"{u}/g;
     $result =~ s/&(\#253|yacute);/\\\'{y}/g;      $result =~ s/&(\#253|yacute);/\\\'{y}/g;
     $result =~ s/&(\#255|yuml);/\\\"{y}/g;      $result =~ s/&(\#255|yuml);/\\\"{y}/g;
     $result =~ s/&\#952;/\$\\theta\$/g;      $result =~ s/&\#295;/\\ensuremath\{\\hbar\}/g;
       $result =~ s/&\#952;/\\ensuremath\{\\theta\}/g;
 #Greek Alphabet  #Greek Alphabet
     $result =~ s/&(alpha|\#945);/\$\\alpha \$/g;      $result =~ s/&(alpha|\#945);/\\ensuremath\{\\alpha\}/g;
     $result =~ s/&(beta|\#946);/\$\\beta \$/g;      $result =~ s/&(beta|\#946);/\\ensuremath\{\\beta\}/g;
     $result =~ s/&(gamma|\#947);/\$\\gamma \$/g;      $result =~ s/&(gamma|\#947);/\\ensuremath\{\\gamma\}/g;
     $result =~ s/&(delta|\#948);/\$\\delta \$/g;      $result =~ s/&(delta|\#948);/\\ensuremath\{\\delta\}/g;
     $result =~ s/&(epsilon|\#949);/\$\\epsilon \$/g;      $result =~ s/&(epsilon|\#949);/\\ensuremath\{\\epsilon\}/g;
     $result =~ s/&(zeta|\#950);/\$\\zeta \$/g;      $result =~ s/&(zeta|\#950);/\\ensuremath\{\\zeta\}/g;
     $result =~ s/&(eta|\#951);/\$\\eta \$/g;      $result =~ s/&(eta|\#951);/\\ensuremath\{\\eta\}/g;
     $result =~ s/&(theta|\#952);/\$\\theta \$/g;      $result =~ s/&(theta|\#952);/\\ensuremath\{\\theta\}/g;
     $result =~ s/&(iota|\#953);/\$\\iota \$/g;      $result =~ s/&(iota|\#953);/\\ensuremath\{\\iota\}/g;
     $result =~ s/&(kappa|\#954);/\$\\kappa \$/g;      $result =~ s/&(kappa|\#954);/\\ensuremath\{\\kappa\}/g;
     $result =~ s/&(lambda|\#955);/\$\\lambda \$/g;      $result =~ s/&(lambda|\#955);/\\ensuremath\{\\lambda\}/g;
     $result =~ s/&(mu|\#956);/\$\\mu \$/g;      $result =~ s/&(mu|\#956);/\\ensuremath\{\\mu\}/g;
     $result =~ s/&(nu|\#957);/\$\\nu \$/g;      $result =~ s/&(nu|\#957);/\\ensuremath\{\\nu\}/g;
     $result =~ s/&(xi|\#958);/\$\\xi \$/g;      $result =~ s/&(xi|\#958);/\\ensuremath\{\\xi\}/g;
     $result =~ s/&(pi|\#960);/\$\\pi \$/g;      $result =~ s/&(omicron|\#959);/o/g;
     $result =~ s/&(rho|\#961);/\$\\rho \$/g;      $result =~ s/&(pi|\#960);/\\ensuremath\{\\pi\}/g;
     $result =~ s/&(sigma|\#963);/\$\\sigma \$/g;      $result =~ s/&(rho|\#961);/\\ensuremath\{\\rho\}/g;
     $result =~ s/&(tau|\#964);/\$\\tau \$/g;      $result =~ s/&(sigma|\#963);/\\ensuremath\{\\sigma\}/g;
     $result =~ s/&(upsilon|\#965);/\$\\upsilon \$/g;      $result =~ s/&(tau|\#964);/\\ensuremath\{\\tau\}/g;
     $result =~ s/&(phi|\#966);/\$\\phi \$/g;      $result =~ s/&(upsilon|\#965);/\\ensuremath\{\\upsilon\}/g;
     $result =~ s/&(chi|\#967);/\$\\chi \$/g;      $result =~ s/&(phi|\#966);/\\ensuremath\{\\phi\}/g;
     $result =~ s/&(psi|\#968);/\$\\psi \$/g;      $result =~ s/&(chi|\#967);/\\ensuremath\{\\chi\}/g;
     $result =~ s/&(omega|\#969);/\$\\omega \$/g;      $result =~ s/&(psi|\#968);/\\ensuremath\{\\psi\}/g;
     $result =~ s/&(Gamma|\#915);/\$\\Gamma \$/g;      $result =~ s/&(omega|\#969);/\\ensuremath\{\\omega\}/g;
     $result =~ s/&(Delta|\#916);/\$\\Delta \$/g;      $result =~ s/&(thetasym|\#977);/\\ensuremath\{\\vartheta\}/g;
     $result =~ s/&(Theta|\#920);/\$\\Theta \$/g;      $result =~ s/&(piv|\#982);/\\ensuremath\{\\varpi\}/g;
     $result =~ s/&(Lambda|\#923);/\$\\Lambda \$/g;      $result =~ s/&(Alpha|\#913);/A/g;
     $result =~ s/&(Xi|\#926);/\$\\Xi \$/g;      $result =~ s/&(Beta|\#914);/B/g;
     $result =~ s/&(Pi|\#928);/\$\\Pi \$/g;      $result =~ s/&(Gamma|\#915);/\\ensuremath\{\\Gamma\}/g;
     $result =~ s/&(Sigma|\#931);/\$\\Sigma \$/g;      $result =~ s/&(Delta|\#916);/\\ensuremath\{\\Delta\}/g;
     $result =~ s/&(Upsilon|\#933);/\$\\Upsilon \$/g;      $result =~ s/&(Epsilon|\#917);/E/g;
     $result =~ s/&(Phi|\#934);/\$\\Phi \$/g;      $result =~ s/&(Zeta|\#918);/Z/g;
     $result =~ s/&(Psi|\#936);/\$\\Psi \$/g;      $result =~ s/&(Eta|\#919);/H/g;
     $result =~ s/&(Omega|\#937);/\$\\Omega \$/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;      return $result;
 }  }
   
   
     sub page_format {                    #width, height, oddsidemargin, evensidemargin, topmargin
  my ($papersize,$layout,$numberofcolumns) = @_;   my %page_formats=
  my ($textwidth,$textheight,$oddoffset,$evenoffset) = (0,0,0,0);      ('letter' => {
  if ($papersize=~/Letter/) {   'book' => {
     if ($layout eq 'CAPA') {       '1' => [ '7.1 in','9.8 in', '-0.57 in','-0.57 in','0.275 in'],
  if ($numberofcolumns == 1) {       '2' => ['3.66 in','9.8 in', '-0.57 in','-0.57 in','0.275 in']
     $textwidth = '18 cm';   },
     $textheight = '25.9 cm';   'album' => {
     $oddoffset = '-0.57 in';       '1' => [ '8.8 in', '6.8 in','-0.55 in',  '-0.55 in','0.394 in'],
     $evenoffset = '-0.57 in';       '2' => [ '4.8 in', '6.8 in','-0.5 in', '-1.0 in','3.5 in']
  } elsif ($numberofcolumns == 2) {   },
     $textwidth = '93 mm';       },
     $textheight = '25.9 cm';       'legal' => {
     $oddoffset = '-0.57 in';   'book' => {
     $evenoffset = '-0.57 in';       '1' => ['7.1 in','13 in',,'-0.57 in','-0.57 in','-0.5 in'],
  }       '2' => ['3.66 in','13 in','-0.57 in','-0.57 in','-0.5 in']
     } elsif ($layout eq 'CBI') {   },
  if ($numberofcolumns eq '1') {   'album' => {
     $textwidth = '8.8 in';       '1' => ['12 in','7.1 in',,'-0.57 in','-0.57 in','-0.5 in'],
     $textheight = '6.8 in';               '2' => ['6.0 in','7.1 in','-1 in','-1 in','5 in']
     $oddoffset = '-40 pt';            },
     $evenoffset = '-60 pt';       },
  } elsif ($numberofcolumns == 2) {       'tabloid' => {
     $textwidth = '4.2 in';   'book' => {
     $textheight = '6.8 in';       '1' => ['9.8 in','16 in','-0.57 in','-0.57 in','-0.5 in'],
     $oddoffset = '-40 pt';       '2' => ['4.9 in','16 in','-0.57 in','-0.57 in','-0.5 in']
     $evenoffset = '-60 pt';   },
  }   'album' => {
     }       '1' => ['16 in','9.8 in','-0.57 in','-0.57 in','-0.5 in'],
 #    } elsif($papersize=~/Legal/) {       '2' => ['16 in','4.9 in','-0.57 in','-0.57 in','-0.5 in']
 #    } elsif($papersize=~/Ledger/) {            },
 #    } elsif($papersize=~/Executive/) {       },
     } elsif($papersize=~/A4/) {       'executive' => {
     if ($layout eq 'CAPA') {   'book' => {
  if ($numberofcolumns == 1) {       '1' => ['6.8 in','9 in','-0.57 in','-0.57 in','1.2 in'],
     $textwidth = '18 cm';       '2' => ['3.1 in','9 in','-0.57 in','-0.57 in','1.2 in']
     $textheight = '28 cm';   },
     $oddoffset = '-0.57 in';   'album' => {
     $evenoffset = '-0.57 in';       '1' => [],
  } elsif ($numberofcolumns == 2) {       '2' => []
     $textwidth = '96 mm';            },
     $textheight = '2 cm';       },
     $oddoffset = '-0.57 in';       'a2' => {
     $evenoffset = '-0.57 in';   'book' => {
  }       '1' => [],
     } elsif ($layout eq 'CBI') {       '2' => []
  if ($numberofcolumns eq '1') {   },
     $textwidth = '8.5 in';   'album' => {
     $textheight = '7.7 in';       '1' => [],
     $oddoffset = '-40 pt';       '2' => []
     $evenoffset = '-60 pt';            },
  } elsif ($numberofcolumns == 2) {       },
     $textwidth = '3.9 in';       'a3' => {
     $textheight = '7.7 in';   'book' => {
     $oddoffset = '-40 pt';       '1' => [],
     $evenoffset = '-60 pt';       '2' => []
  }   },
     }   'album' => {
 #    } elsif($papersize=~/A3/) {       '1' => [],
 #    } elsif($papersize=~/A2/) {       '2' => []
 #    } elsif($papersize=~/A5/) {            },
 #    } elsif($papersize=~/A6/) {       },
  }       'a4' => {
  return $textwidth,$textheight,$oddoffset,$evenoffset;   '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 {  sub page_format_transformation {
     my ($papersize,$layout,$numberofcolumns,$choice,$text,$assignment) = @_;       my ($papersize,$layout,$numberofcolumns,$choice,$text,$assignment,$tableofcontents,$indexlist,$selectionmade) = @_; 
     my ($textwidth,$textheight,$oddoffset,$evenoffset);      my ($textwidth,$textheight,$oddoffset,$evenoffset,$topmargin);
  $assignment=~s/_/ /g;  
         if ($numberofcolumns != 1) {      if ($selectionmade eq '4') {
           ($textwidth,$textheight,$oddoffset,$evenoffset) = &page_format($papersize,$layout,$numberofcolumns);   if ($choice eq 'all_problems') {
       $assignment='Problems from the Whole Course';
  } else {   } else {
   ($textwidth,$textheight,$oddoffset,$evenoffset) = ($ENV{'form.width'},$ENV{'form.height'},$ENV{'form.leftmargin'},$ENV{'form.leftmargin'});      $assignment='Resources from the Whole Course';
  }   }
     my $firstname = &Apache::lonxml::latex_special_symbols(&Apache::lonnet::unescape($ENV{'environment.firstname'}),'','','header');      } else {
     my $lastname = &Apache::lonxml::latex_special_symbols(&Apache::lonnet::unescape($ENV{'environment.lastname'}),'','','header');   $assignment=&Apache::lonxml::latex_special_symbols($assignment,'header');
     my $courseidinfo = &Apache::lonxml::latex_special_symbols(&Apache::lonnet::unescape($ENV{'course.'.$ENV{'request.course.id'}.'.description'}),'','','header');      }
     if ($layout eq 'CBI') {      ($textwidth,$textheight,$oddoffset,$evenoffset,$topmargin) = &page_format($papersize,$layout,$numberofcolumns,$topmargin);
     $text =~ s/\\begin{document}/\\setlength{\\oddsidemargin}{$oddoffset}\\setlength{\\evensidemargin}{$evenoffset}\\setlength{\\topmargin}{200pt}\\setlength{\\textwidth}{$textwidth}\\setlength{\\textheight}{$textheight}\\setlength{\\parindent}{20pt}\\setlength{\\marginparwidth}{90pt}\\setlength{\\textfloatsep}{8pt plus 2\.0pt minus 4\.0pt}\\newlength{\\minipagewidth}\\setlength{\\minipagewidth}{\\textwidth\/\$number_of_columns-0\.2cm} \\begin{document}\\setcounter{page}{1}\\noindent\\parbox{\\minipagewidth}{\\noindent\\fbox{\\textbf{$firstname $lastname}} \\hfill  $courseidinfo} \\vskip 5 mm /;  
     } elsif ($layout eq 'CAPA') {  
       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 ($choice ne 'All class print') {    if ($choice ne 'All class print') { 
  $text =~ s/\\begin{document}/\\textheight $textheight\\oddsidemargin = $evenoffset\\evensidemargin = $evenoffset\\textwidth= $textwidth\\newlength{\\minipagewidth}\\setlength{\\minipagewidth}{\\textwidth\/\$number_of_columns-0\.2cm}\\renewcommand{\\ref}{\\keephidden\}\\usepackage{fancyhdr}\\pagestyle{fancy}\\rhead{}\\chead{}\\lhead{\\textbf{$firstname $lastname} - $courseidinfo \\hfill \\thepage \\\\ \\textit{$assignment}}\\begin{document}\\voffset=-0\.8 cm\\setcounter{page}{1}/;      $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 {   } else {
     $text =~ s/\\pagestyle{fancy}\\rhead{}\\chead{}\s*\\begin{document}/\\textheight $textheight\\oddsidemargin = $evenoffset\\evensidemargin = $evenoffset\\textwidth= $textwidth\\newlength{\\minipagewidth}\\setlength{\\minipagewidth}{\\textwidth\/\$number_of_columns-0\.2cm}\\renewcommand{\\ref}{\\keephidden\}\\pagestyle{fancy}\\rhead{}\\chead{}\\begin{document}\\voffset=-0\.8cm\\setcounter{page}{1}  \\vskip 5 mm /;      $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;      return $text;
 }  }
   
Line 1155  sub page_cleanup { Line 1118  sub page_cleanup {
   
   
 sub details_for_menu {  sub details_for_menu {
       my ($helper)=@_;
     my $name_of_resourse = $hash{'title_'.$hash{'ids_'.$ENV{'form.postdata'}}};      my $postdata=$env{'form.postdata'};
     my $symbolic = &Apache::lonnet::symbread($ENV{'form.postdata'});      if (!$postdata) { $postdata=$helper->{VARS}{'postdata'}; }
     my ($map,$id,$resource)=split(/___/,$symbolic);      my $name_of_resource = &Apache::lonnet::gettitle($postdata);
     my $name_of_sequence;      my $symbolic = &Apache::lonnet::symbread($postdata);
     if ($map=~/^uploaded/) {      return if ( $symbolic eq '');
  $name_of_sequence = $hash{'title_'.$hash{'ids_/'.$map}};  
     } else {      my ($map,$id,$resource)=&Apache::lonnet::decode_symb($symbolic);
  $name_of_sequence = $hash{'title_'.$hash{'ids_/res/'.$map}};      $map=&Apache::lonnet::clutter($map);
     }      my $name_of_sequence = &Apache::lonnet::gettitle($map);
     if ($name_of_sequence =~ /^\s*$/) {      if ($name_of_sequence =~ /^\s*$/) {
      $map =~ m|([^/]+)$|;   $map =~ m|([^/]+)$|;
       $name_of_sequence = $1;   $name_of_sequence = $1;
     }      }
     my $name_of_map = $hash{'title_'.$hash{'ids_/res/'.$ENV{'request.course.uri'}}};      my $name_of_map = &Apache::lonnet::gettitle($env{'request.course.uri'});
     if ($name_of_map =~ /^\s*$/) {      if ($name_of_map =~ /^\s*$/) {
       $ENV{'request.course.uri'} =~ m|([^/]+)$|;   $env{'request.course.uri'} =~ m|([^/]+)$|;
       $name_of_map = $1;   $name_of_map = $1;
     }        }
     return ($name_of_resourse,$name_of_sequence,$name_of_map);      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 {  sub latex_corrections {
       my ($number_of_columns,$result,$selectionmade,$answer_mode) = @_;
     my ($number_of_columns,$result) = @_;  #    $result =~ s/\\includegraphics{/\\includegraphics\[width=\\minipagewidth\]{/g;
       my $copyright = &copyright_line();
     $result =~ s/\\includegraphics{/\\includegraphics\[width=\\minipagewidth\]{/g;      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;      $result =~ s/\$number_of_columns/$number_of_columns/g;
     $result =~ s/(\\end{document})/\\strut\\newline\\noindent\\makebox\[\\textwidth\/$number_of_columns\]\[b\]{\\hrulefill}\\newline\\noindent\\tiny Printed from LON-CAPA\\copyright MSU{\\hfill} Licensed under GNU General Public License  $1/;  
     $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\\noindent\\makebox\[\\textwidth\/$number_of_columns\]\[b\]{\\hrulefill})/$2$1/g;
     $result =~ s/(\\end{longtable}\s*)\\strut\\newline/$1/g;      $result =~ s/(\\end{longtable}\s*)\\strut\\newline/$1/g;
 #-- LaTeX corrections       #-- LaTeX corrections     
Line 1196  sub latex_corrections { Line 1165  sub latex_corrections {
  $first_comment = index($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/(\s)(\s+)/$1/g; #removes more than one empty space      #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/\\\\\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/\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);
     }      }
     $result =~ s/(\\end{tabular})\s*\\vskip 0 mm/$1/g;      $result =~ s/(\\end{tabular})\s*\\vskip 0 mm/$1/g;
     $result =~ s/(\\begin{enumerate})\s*\\noindent/$1/g;      $result =~ s/(\\begin{enumerate})\s*\\noindent/$1/g;
       return $result;
   }
   
   
   sub index_table {
       my $currentURL = shift;
       my $insex_string='';
       $currentURL=~s/\.([^\/+])$/\.$1\.meta/;
       $insex_string=&Apache::lonnet::metadata($currentURL,'keywords');
       return $insex_string;
   }
   
   
   sub IndexCreation {
       my ($texversion,$currentURL)=@_;
       my @key_words=split(/,/,&index_table($currentURL));
       my $chunk='';
       my $st=index $texversion,'\addcontentsline{toc}{subsection}{';
       if ($st>0) {
    for (my $i=0;$i<3;$i++) {$st=(index $texversion,'}',$st+1);}
    $chunk=substr($texversion,0,$st+1);
    substr($texversion,0,$st+1)=' ';
       }
       foreach my $key_word (@key_words) {
    if ($key_word=~/\S+/) {
       $texversion=~s/\b($key_word)\b/$1 \\index{$key_word} /i;
    }
       }
       if ($st>0) {substr($texversion,0,1)=$chunk;}
       return $texversion;
   }
   
   sub print_latex_header {
       my $mode=shift;
   
       return &Apache::londefdef::latex_header($mode);
   }
   
   sub path_to_problem {
       my ($urlp,$colwidth)=@_;
       $urlp=&Apache::lonnet::clutter($urlp);
   
       my $newurlp = '';
       $colwidth=~s/\s*mm\s*$//;
   #characters average about 2 mm in width
       if (length($urlp)*2 > $colwidth) {
    my @elements = split('/',$urlp);
    my $curlength=0;
    foreach my $element (@elements) {
       if ($element eq '') { next; }
       if ($curlength+(length($element)*2) > $colwidth) {
    $newurlp .=  '|\vskip -1 mm \verb|';
    $curlength=length($element)*2;
       } else {
    $curlength+=length($element)*2;
       }
       $newurlp.='/'.$element;
    }
       } else {
    $newurlp=$urlp;
       }
       return '{\small\noindent\verb|'.$newurlp.'|\vskip 0 mm}';
   }
   
   sub recalcto_mm {
       my $textwidth=shift;
       my $LaTeXwidth;
       if ($textwidth=~/(-?\d+\.?\d*)\s*cm/) {
    $LaTeXwidth = $1*10;
       } elsif ($textwidth=~/(-?\d+\.?\d*)\s*mm/) {
    $LaTeXwidth = $1;
       } elsif ($textwidth=~/(-?\d+\.?\d*)\s*in/) {
    $LaTeXwidth = $1*25.4;
       }
       $LaTeXwidth.=' mm';
       return $LaTeXwidth;
   }
   
   sub get_textwidth {
       my ($helper,$LaTeXwidth)=@_;
       my $textwidth=$LaTeXwidth;
       if ($helper->{'VARS'}->{'pagesize.width'}=~/\d+/ &&
    $helper->{'VARS'}->{'pagesize.widthunit'}=~/\w+/) {
    $textwidth=&recalcto_mm($helper->{'VARS'}->{'pagesize.width'}.' '.
    $helper->{'VARS'}->{'pagesize.widthunit'});
       }
       return $textwidth;
   }
   
   
   sub unsupported {
       my ($currentURL,$mode,$symb)=@_;
       if ($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);
    $result.=' \strut \\\\ '.$title.' \strut \\\\ '.$currentURL.' ';
       } else {
    $result.=$currentURL;
       }
       $result.= '\vskip 0.5mm\noindent\makebox[\textwidth/$number_of_columns][b]{\hrulefill} \end{document}';
     return $result;      return $result;
 }  }
   
   
 sub handler {  #
   # List of recently generated print files
   #
   sub recently_generated {
       my $r=shift;
       my $prtspool=$r->dir_config('lonPrtDir');
       my $zip_result;
       my $pdf_result;
       opendir(DIR,$prtspool);
   
       my @files = 
    grep(/^$env{'user.name'}_$env{'user.domain'}_printout_(\d+)_.*\.(pdf|zip)$/,readdir(DIR));
       closedir(DIR);
   
       @files = sort {
    my ($actime) = (stat($prtspool.'/'.$a))[10];
    my ($bctime) = (stat($prtspool.'/'.$b))[10];
    return $bctime <=> $actime;
       } (@files);
   
       foreach my $filename (@files) {
    my ($ext) = ($filename =~ m/(pdf|zip)$/);
    my ($cdev,$cino,$cmode,$cnlink,
       $cuid,$cgid,$crdev,$csize,
       $catime,$cmtime,$cctime,
       $cblksize,$cblocks)=stat($prtspool.'/'.$filename);
           my $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()
           );
       }
   }
   
     my $r = shift;  #
   #   Retrieve the hash of page breaks.
   #
   #  Inputs:
   #    helper   - reference to helper object.
   #  Outputs
   #    A reference to a page break hash.
   #
   #
   #use Data::Dumper;
   #sub dump_helper_vars {
   #    my ($helper) = @_;
   #    my $helpervars = Dumper($helper->{'VARS'});
   #    &Apache::lonnet::logthis("Dump of helper vars:\n $helpervars");
   #}
   
   sub get_page_breaks  {
       my ($helper) = @_;
       my %page_breaks;
   
     # A hook for me to work without disturbing Alex.      foreach my $break (split /\|\|\|/, $helper->{'VARS'}->{'FINISHPAGE'}) {
     if ($ENV{'form.jeremy'}) {   $page_breaks{$break} = 1;
         printWizard($r);  
         return OK;  
     }      }
       return %page_breaks;
   }
   
     my $loaderror=&Apache::lonnet::overloaderror($r);  #  Output a sequence (recursively if neeed)
     if ($loaderror) { return $loaderror; }  #  from construction space.
     $loaderror=  # Parameters:
        &Apache::lonnet::overloaderror($r,  #    url     = URL of the sequence to print.
          $ENV{'course.'.$ENV{'request.course.id'}.'.home'});  #    helper  - Reference to the helper hash.
     if ($loaderror) { return $loaderror; }  #    form    - Copy of the format hash.
   #    LaTeXWidth
   # Returns:
   #   Text to add to the printout.
   #   NOTE if the first element of the outermost sequence
   #   is itself a sequence, the outermost caller may need to
   #   prefix the latex with the page headers stuff.
   #
   sub print_construction_sequence {
       my ($currentURL, $helper, %form, $LaTeXwidth) = @_;
       my $result;
       my $rndseed=time;
       if ($helper->{'VARS'}->{'curseed'}) {
    $rndseed=$helper->{'VARS'}->{'curseed'};
       }
       my $errtext=&LONCAPA::map::mapread($currentURL);
       # 
       #  These make this all support recursing for subsequences.
       #
       my @order    = @LONCAPA::map::order;
       my @resources = @LONCAPA::map::resources; 
       for (my $member=0;$member<=$#order;$member++) {
    $resources[$order[$member]]=~/^([^:]*):([^:]*):/;
    my $urlp=$2;
    if ($urlp=~/\.(problem|exam|quiz|assess|survey|form|library|xml|html|htm|xhtml|xhtm)$/) {
       my $texversion='';
       if ($helper->{'VARS'}->{'ANSWER_TYPE'} ne 'only') {
    $form{'problem_split'}=$parmhash{'problem_stream_switch'};
    $form{'suppress_tries'}=$parmhash{'suppress_tries'};
    $form{'latex_type'}=$helper->{'VARS'}->{'LATEX_TYPE'};
    $form{'rndseed'}=$rndseed;
    $resources_printed .=$urlp.':';
    $texversion=&ssi_with_retries($urlp, $ssi_retry_count, %form);
       }
       if((($helper->{'VARS'}->{'ANSWER_TYPE'} eq 'no') ||
    ($helper->{'VARS'}->{'ANSWER_TYPE'} eq 'only')) && 
          ($urlp=~/\.(problem|exam|quiz|assess|survey|form|library|page)$/)) {
    #  Don't permanently modify %$form...
    my %answerform = %form;
    $answerform{'grade_target'}='answer';
    $answerform{'answer_output_mode'}='tex';
    $answerform{'rndseed'}=$rndseed;
    $answerform{'problem_split'}=$parmhash{'problem_stream_switch'};
    if ($urlp=~/\/res\//) {$env{'request.state'}='published';}
    $resources_printed .= $urlp.':';
    my $answer=&ssi_with_retries($urlp, $ssi_retry_count, %answerform);
    if ($helper->{'VARS'}->{'ANSWER_TYPE'} eq 'no') {
       $texversion=~s/(\\keephidden{ENDOFPROBLEM})/$answer$1/;
    } else {
       # If necessary, encapsulate answer in minipage:
       
       $texversion=&print_latex_header($helper->{'VARS'}->{'LATEX_TYPE'});
       my $title = &Apache::lonnet::gettitle($helper->{'VARS'}->{'symb'});
       $title = &Apache::lonxml::latex_special_symbols($title);
       my $body ='\vskip 0 mm \noindent\textbf{'.$title.'}\vskip 0 mm ';
       $body.=&path_to_problem($urlp,$LaTeXwidth);
       $body.='\vskip 1 mm '.$answer.'\end{document}';
       $body = &encapsulate_minipage($body);
       $texversion.=$body;
    }
       }
       $texversion = &latex_header_footer_remove($texversion);
   
     $r->content_type('text/html');      if ($helper->{'VARS'}->{'TABLE_INDEX'} eq 'yes') {
     $r->send_http_header;   $texversion=&IndexCreation($texversion,$urlp);
     $r->print(&Apache::loncommon::bodytag("Printing"));      }
       if ($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) {
       $result .= &include_pdf($urlp);
    }
       }
       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 = '';
       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
   
   
   
       my $start_page  = &Apache::loncommon::start_page('Preparing Printout',$js);
       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;
       if ($laystyle eq 'L') {
    $laystyle='album';
       } else {
    $laystyle='book';
       }
       my ($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/|
       && $cleanURL=~/\.(problem|exam|quiz|assess|survey|form|library|page|xml|html|htm|xhtml|xhtm)$/) {
       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 ($ENV{'request.course.id'}) {  
  my $fn=$ENV{'request.course.fn'};      if ($helper->{'VARS'}->{'TABLE_INDEX'} eq 'yes') {
  tie(%hash,'GDBM_File',"$fn.db",&GDBM_READER(),0640);   $texversion=&IndexCreation($texversion,$currentURL);
     }      }
       if ($helper->{'VARS'}->{'CONSTR_RESOURSE_URL'} eq 'yes') {
 #-- start form   $texversion=~s/(\\addcontentsline\{toc\}\{subsection\}\{[^\}]*\})/$1 URL: \\verb|$currentURL| \\strut\\\\\\strut /;
     &headerform($r);  
 #-- menu for output      }
     unless  ($ENV{'form.phase'}) {      $result .= $texversion;
  &menu_for_output($r);      if ($currentURL=~m/\.page\s*$/) {
     }   ($result,$number_of_columns) = &page_cleanup($result);
 #-- additional menu for class printing      }
      if ($ENV{'form.phase'} eq 'two') {          } elsif ($cleanURL!~m|^/adm/|
  if($ENV{'form.choice'} eq 'Standard LaTeX output for whole primary sequence') {   && $currentURL=~/\.sequence$/ && $helper->{'VARS'}->{'construction'} eq '1') {
      &sequence_content_menu(0,$r);              #printing content of sequence from the construction space
  } elsif($ENV{'form.choice'} eq 'Standard LaTeX output for the primary sequence') {      $currentURL=~s|\/~([^\/]+)\/|\/home\/$1\/public_html\/|;
      &sequence_content_menu(1,$r);      $result .= &print_latex_header($helper->{'VARS'}->{'LATEX_TYPE'});
  } elsif($ENV{'form.choice'} eq 'All class print') {      $result .= &print_construction_sequence($currentURL, $helper, %form,
      &additional_class_menu($r);      $LaTeXwidth);
  } elsif($ENV{'form.choice'} eq 'Subdirectory print') {      $result .= '\end{document}';  
      &problem_choice_menu($r);      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);
    } else {
       $result.=&unsupported($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'});
       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 {
    $texversion=&unsupported($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 {   } else {
      $ENV{'form.phase'} = 'three';       my %allcodes;
        srand($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 /\|\|\|/, $helper->{'VARS'}->{'RESOURCES'};
 #-- additional menu for page layout (one column case)   my ($type) = split(/_/,$helper->{'VARS'}->{'PRINT_TYPE'});
     if ($ENV{'form.phase'} eq 'three') {   &adjust_number_to_print($helper);
  if($ENV{'form.numberofcolumns'} == 1) {   my $number_per_page=$helper->{'VARS'}->{'NUMBER_TO_PRINT'};
     &additional_print_menu($r);   if ($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;
       }
       $flag_latex_header_remove = 'YES';  
    }
    if ($helper->{VARS}->{'construction'} eq '1') {$result=~s/(\\typeout)/ RANDOM SEED IS $rndseed $1/;}
    $result .= '\end{document}';      
       }
   #-------------------------------------------------------- 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/|;
    }
       }
   
   #-- 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 {   } else {
     $ENV{'form.phase'} = 'four';             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');
           $r->print('<br /><h2>'.&mt('An unrecoverable network error occurred:').'</h2><p>  '.
                     &mt('At least one of the resources you chose to print could not be rendered due to an unrecoverable error when communicating with a server:').
                     '<br />'.$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);
       }
  }   }
     }      }
 #-- core part   }
     if ($ENV{'form.phase'} eq 'four') {  
  &output_data($r);  sub print_resources {
     }      my ($r,$helper,$person,$type,$moreenv,$master_seq,$remove_latex_header,
     untie %hash;   $LaTeXwidth)=@_;
     return OK;      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'});
       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 ';
   
    } 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 {
   
       my $r = shift;
       
       &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::lonwizard;  use Apache::lonhelper;
   
 sub printWizard {  sub addMessage {
     my $r = shift;      my $text = shift;
       my $paramHash = Apache::lonhelper::getParamHash();
       $paramHash->{MESSAGE_TEXT} = $text;
       Apache::lonhelper::message->new();
   }
   
     if ($ENV{'request.course.id'}) {  
  my $fn=$ENV{'request.course.fn'};  
  tie(%hash,'GDBM_File',"$fn.db",&GDBM_READER(),0640);  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 ($r->header_only) {      if ($r->header_only) {
         if ($ENV{'browser.mathml'}) {          if ($env{'browser.mathml'}) {
             $r->content_type('text/xml');              &Apache::loncommon::content_type($r,'text/xml');
         } else {          } else {
             $r->content_type('text/html');              &Apache::loncommon::content_type($r,'text/html');
         }          }
         $r->send_http_header;          $r->send_http_header;
         return OK;          return OK;
     }      }
   
     # Send header, nocache      # Send header, nocache
     if ($ENV{'browser.mathml'}) {      if ($env{'browser.mathml'}) {
         $r->content_type('text/xml');          &Apache::loncommon::content_type($r,'text/xml');
     } else {      } else {
         $r->content_type('text/html');          &Apache::loncommon::content_type($r,'text/html');
     }      }
     &Apache::loncommon::no_cache($r);      &Apache::loncommon::no_cache($r);
     $r->send_http_header;      $r->send_http_header;
     $r->rflush();      $r->rflush();
   
     my ($resourceTitle,$sequenceTitle,$mapTitle) = &details_for_menu;      # 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");
   
   
     my $wizard = Apache::lonwizard->new("Printing Wizard", $ENV{QUERY_STRING});     
     # PRINT_TYPE: What the user wants to print (current docs,  
     #  whole sequence, etc.  
     $wizard->declareVars(['PRINT_TYPE', 'FORMAT', 'postdata', 'url',      #  The page breaks can get loaded initially from the course environment:
                           'symb', 'RESOURCES', 'FILES']);      # 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      # Extract map
     my $symb = $wizard->{VARS}->{'symb'};      my $symb = $helper->{VARS}->{'symb'};
     my ($map, $id, $url) = split(/__/, $symb);      my ($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);
   
     my $subdir = &Apache::lonnet::filelocation("", $ENV{'form.url'});          if (!$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'};
       }
   
       my $userCanSeeHidden = Apache::lonnavmaps::advancedUser();
   
       Apache::lonhelper::registerHelperTags();
   
     # "Delete everything after the last slash."      # "Delete everything after the last slash."
     $subdir =~ s|/[^/]+$||;      $subdir =~ s|/[^/]+$||;
   
     # This really ought to be in some repository in loncommon or      # What can be printed is a very dynamic decision based on
     # something where it can just be grabbed.      # lots of factors. So we need to dynamically build this list.
     my $problemFilter = sub {       # To prevent security leaks, states are only added to the wizard
         my $name = shift;      # if they can be reached, which ensures manipulating the form input
         return $name =~ m/^[^\.]+\.(problem|exam|quiz|assess|survey|form|library)$/;      # won't allow anyone to reach states they shouldn't have permission
     };      # to reach.
   
     Apache::lonwizard::switch_state->new($wizard, "START", "Selecting Resources to Print", "PRINT_TYPE", [      # printChoices is tracking the kind of printing the user can
            ['current_document', "<b>$resourceTitle</b> (exactly what was on the screen)", 'CHOOSE_FORMAT'],      # do, and will be used in a choices construction later.
            ['map_problems', "Problems from <b>$sequenceTitle</b>", 'CHOOSE_PROBLEMS'],      # In the meantime we will be adding states and elements to
            ['map_problems_pages', "Problems and pages from <b>$sequenceTitle</b>", 'CHOOSE_PROBLEMS_HTML'],      # the helper by hand.
            ['problems_for_students', "Problems from <b>$sequenceTitle</b> for selected students", 'CHOOSE_FORMAT'],      my $printChoices = [];
            ['problems_from_directory', "Problems from <b>$subdir</b>", 'CHOOSE_FROM_SUBDIR'] ],      my $paramHash;
            "What do you want to print?");  
     Apache::lonwizard::resource_multichoice->new($wizard, "CHOOSE_PROBLEMS", 'Select Problems', "Select problems to print from <b>$sequenceTitle</b>:", '', 'CHOOSE_FORMAT', 'RESOURCES', sub {my $res = shift; return $res->is_problem()}, undef, $map);      if ($resourceTitle) {
     Apache::lonwizard::resource_multichoice->new($wizard, "CHOOSE_PROBLEMS_HTML", 'Select Resources', "Select resources to print from <b>$sequenceTitle</b>:", '', "CHOOSE_FORMAT", 'RESOURCES', sub {my $res = shift; return !$res->is_map()}, undef, $map);          push @{$printChoices}, ["<b><i>$resourceTitle</i></b> (".&mt('the resource you just saw on the screen').")", 'current_document', 'PAGESIZE'];
     Apache::lonwizard::choose_files->new($wizard, "CHOOSE_FROM_SUBDIR", "Select Files","Select problems you wish to print from <b>$subdir</b>:", '', 'CHOOSE_FORMAT', 'FILES', $subdir, $problemFilter);      }
     Apache::lonprintout::page_format_state->new($wizard, "CHOOSE_FORMAT", "Page Format", "FORMAT", "FINAL");  
       # 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);
   
     $r->print($wizard->display());   # 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>';
    }
   
     untie %hash;  
   
     return OK;   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_headline()
   #                  .'<h3>'.&mt('Print Options').'</h3>'
   #                  .&Apache::lonhtmlcommon::row_closure()
                      .&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;
       }
   
       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'} = [ ["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;
 }  }
   
   
Line 1357  package Apache::lonprintout::page_format Line 3442  package Apache::lonprintout::page_format
   
 =pod  =pod
   
 =head1 Wizard state: page_format_state  =head1 Helper element: page_format_state
   
   See lonhelper.pm documentation for discussion of the helper framework.
   
 See lonwizard.pm documentation for discussion of the wizard 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.
   
 Apache::lonprintout::page_format_state is a state 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  =over 4
   
 =item * B<new>(parentLonWizReference, stateName, stateTitle, varName, nextState): varName is where the print information will be stored in the format FIXME. nextState is the state that follows this one.  =item * B<new>(varName): varName is where the print information will be stored in the format FIXME.
   
 =back  =back
   
 =cut  =cut
   
 use Apache::lonwizard;  use Apache::lonhelper;
   
 no strict;  no strict;
 @ISA = ("Apache::lonwizard::state");  @ISA = ("Apache::lonhelper::element");
 use strict;  use strict;
   use Apache::lonlocal;
   use Apache::lonnet;
   
 my $maxColumns = 2;  my $maxColumns = 2;
 my @paperSize = ("Letter [8 1/2x11 in]", "Legal [8 1/2x14 in]",   # it'd be nice if these all worked
                  "Ledger/Tabloid [11x17 in]", "Executive [7 1/2x10 in]",  #my @paperSize = ("letter [8 1/2x11 in]", "legal [8 1/2x14 in]", 
                  "A2 [420x594 mm]", "A3 [297x420 mm]", "A4 [210x297 mm]",   #                 "tabloid (ledger) [11x17 in]", "executive [7 1/2x10 in]",
                  "A5 [148x210 mm]", "A6 [105x148 mm]" );  #                 "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 |  # Tentative format: Orientation (L = Landscape, P = portrait) | Colnum |
 #                   Paper type  #                   Paper type
   
 sub new {   sub new { 
     my $proto = shift;      my $self = Apache::lonhelper::element->new();
     my $class = ref($proto) || $proto;  
     my $self = bless $proto->SUPER::new(shift, shift, shift);  
   
     $self->{VAR_NAME} = shift;  
     $self->{NEXT_STATE} = shift;  
     return $self;  
 }  
   
 sub postprocess {      shift;
     my $self = shift;  
     my $wizard = $self->{WIZARD};  
   
     # We have to manually collect the value and store it in the       $self->{'variable'} = shift;
     # wizard variable      my $helper = Apache::lonhelper::getHelper();
     my $result = $ENV{'form.' . $self->{VAR_NAME} . '.layout'} . '|';      $helper->declareVar($self->{'variable'});
     $result .= $ENV{'form.' . $self->{VAR_NAME} . '.cols'} . '|';      bless($self);
     $result .= $ENV{'form.' . $self->{VAR_NAME} . '.paper'};      return $self;
       
     $wizard->setVar($self->{VAR_NAME}, $result);  
     $wizard->changeState($self->{NEXT_STATE});  
 }  }
   
 sub render {  sub render {
     my $self = shift;      my $self = shift;
     my $wizard = $self->{WIZARD};      my $helper = Apache::lonhelper::getHelper();
     my $result = '';      my $result = '';
     my $var = $self->{VAR_NAME};      my $var = $self->{'variable'};
     my $curVal = $self->{WIZARD}->{VARS}->{$var};      my $PageLayout=&mt('Page layout');
       my $NumberOfColumns=&mt('Number of columns');
     my ($layout, $cols, $paper) = split(/\|/, $curVal);      my $PaperType=&mt('Paper type');
       my $landscape=&mt('Landscape');
     my $landscapeChecked = ($layout ne "L")? '' : 'checked ';      my $portrait=&mt('Portrait');
     my $portraitChecked = $landscapeChecked ? '' : 'checked ';      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 .= <<STATEHTML;      $result.='<td align="center">'
               .'<select name="'.${var}.'.cols">';
 <p>How should the printing be formatted?</p>  
 <table cellpadding="3">  
   <tr>  
     <td align="center"><b>Layout</b></td>  
     <td align="center"><b>Columns</b></td>  
     <td align="center"><b>Paper type</b></td>  
   </tr>  
   <tr>  
     <td>  
       <input type="radio" name="${var}.layout" value="L" $landscapeChecked> Landscape<br />  
       <input type="radio" name="${var}.layout" value="P" $portraitChecked> Portrait  
     </td>  
     <td>  
       <select name="${var}.cols">  
 STATEHTML  
   
     my $i;      my $i;
     for ($i = 1; $i <= $maxColumns; $i++) {      for ($i = 1; $i <= $maxColumns; $i++) {
         if ($i == $cols) {          if ($i == 2) {
             $result .= "<option value='$i' selected>$i</option>\n";              $result .= "<option value='$i' selected>$i</option>\n";
         } else {          } else {
             $result .= "<option value='$i'>$i</option>\n";              $result .= "<option value='$i'>$i</option>\n";
Line 1452  STATEHTML Line 3537  STATEHTML
     $result .= "</select></td><td>\n";      $result .= "</select></td><td>\n";
     $result .= "<select name='${var}.paper'>\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;      $i = 0;
     foreach (@paperSize) {      foreach (@paperSize) {
         if ($paper == $i) {   $_=~/(\w+)/;
             $result .= "<option selected value='$i'>" . $paperSize[$i] . "</option>\n";   my $papersize=$1;
           if ($paperSize[$i]=~/$DefaultPaperSize/) {
               $result .= "<option selected value='$papersize'>" . $paperSize[$i] . "</option>\n";
         } else {          } else {
             $result .= "<option value='$i'>" . $paperSize[$i] . "</option>\n";              $result .= "<option value='$papersize'>" . $paperSize[$i] . "</option>\n";
         }          }
         $i++;          $i++;
     }      }
       $result .= <<HTML;
           </select>
       </td>
       <td align='center'>
           <select name='${var}.pdfFormFields'>
               <option 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();
   
     $result .= "</select></td></tr></table>";  
     return $result;      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;  1;
   
 package Apache::lonprintout::printwizfinal;  package Apache::lonprintout::page_size_state;
   
   =pod
   
   =head1 Helper element: page_size_state
   
   See lonhelper.pm documentation for discussion of the helper framework.
   
 # This is the final state for the print wizard. It is not generally useful,  Apache::lonprintout::page_size_state is an element that gives the 
 # so it is not perldoc'ed.  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;  no strict;
 @ISA = ('Apache::lonwizard::state');  @ISA = ("Apache::lonhelper::element");
 use strict;  use strict;
   
 sub new {  
     my $proto = shift;  
     my $class = ref($proto) || $proto;  
     my $self = bless $proto->SUPER::new(shift, shift, shift);  
   
     # All other variables come from the wizard.  
   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 {  sub render {
     my $self = shift;      my $self = shift;
     my $wizard = $self->{WIZARD};      my $helper = Apache::lonhelper::getHelper();
     my $wizvars = $wizard->{VARS};  
   
     my $result = '';      my $result = '';
       my $var = $self->{'variable'};
   
   
   
       if (defined $self->{ERROR_MSG}) {
           $result .= '<br /><span class="LC_error">' . $self->{ERROR_MSG} . '</span><br />';
       }
   
     $result .= "<form method='get' action='/adm/printout'>\n";      my $format = $helper->{VARS}->{$self->{'formatvar'}};
   
     # Nope, I'm lost.      # Use format to get sensible defaults for the margins:
     $result .= "</form>";  
   
       my ($laystyle, $cols, $papersize) = split(/\|/, $format);
       ($papersize)                      = split(/ /, $papersize);
   
   
       if ($laystyle eq 'L') {
    $laystyle = 'album';
       } else {
    $laystyle = 'book';
       }
   
   
       my %size;
       ($size{'width_and_units'},
        $size{'height_and_units'},
        $size{'margin_and_units'})=
    &Apache::lonprintout::page_format($papersize, $laystyle, $cols);
       
       foreach my $dimension ('width','height','margin') {
    ($size{$dimension},$size{$dimension.'_unit'}) =
       split(/ +/, $size{$dimension.'_and_units'},2);
          
    foreach my $unit ('cm','in') {
       $size{$dimension.'_options'} .= '<option ';
       if ($size{$dimension.'_unit'} eq $unit) {
    $size{$dimension.'_options'} .= 'selected="selected" ';
       }
       $size{$dimension.'_options'} .= '>'.$unit.'</option>';
    }
       }
   
       # Adjust margin for LaTeX margin: .. requires units == cm or in.
   
       if ($size{'margin_unit'} eq 'in') {
    $size{'margin'} += 1;
       }  else {
    $size{'margin'} += 2.54;
       }
       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;
 }  }
   
 1;  
   sub preprocess {
       my $self = shift;
       my $helper = Apache::lonhelper::getHelper();
   
       my $format = $helper->{VARS}->{$self->{'formatvar'}};
   
       #  If the user does not have 'pav' privilege, set default widths and
       #  on to the next state right away.
       #
       if (!$perm{'pav'}) {
    my $var = $self->{'variable'};
    my $format = $helper->{VARS}->{$self->{'formatvar'}};
   
    my ($laystyle, $cols, $papersize) = split(/\|/, $format);
    ($papersize)                      = split(/ /, $papersize);
   
   
    if ($laystyle eq 'L') {
       $laystyle = 'album';
    } else {
       $laystyle = 'book';
    }
    #  Figure out some good defaults for the print out and set them:
   
    my %size;
    ($size{'width'},
    $size{'height'},
    $size{'lmargin'})=
        &Apache::lonprintout::page_format($papersize, $laystyle, $cols);
   
    foreach my $dim ('width', 'height', 'lmargin') {
       my ($value, $units) = split(/ /, $size{$dim});
           
       $helper->{VARS}->{"$var.".$dim}      = $value;
       $helper->{VARS}->{"$var.".$dim.'unit'} = $units;
       
    }
   
   
    # Transition to the next state
   
    $helper->changeState($self->{NEXTSTATE});
       }
      
       return 1;
   }
   
   sub postprocess {
       my $self = shift;
   
       my $var = $self->{'variable'};
       my $helper = Apache::lonhelper->getHelper();
       my $width = $helper->{VARS}->{$var .'.width'} = $env{"form.${var}.width"}; 
       my $height = $helper->{VARS}->{$var .'.height'} = $env{"form.${var}.height"}; 
       my $lmargin = $helper->{VARS}->{$var .'.lmargin'} = $env{"form.${var}.lmargin"}; 
       $helper->{VARS}->{$var .'.widthunit'} = $env{"form.${var}.widthunit"}; 
       $helper->{VARS}->{$var .'.heightunit'} = $env{"form.${var}.heightunit"}; 
       $helper->{VARS}->{$var .'.lmarginunit'} = $env{"form.${var}.lmarginunit"}; 
   
       my $error = '';
   
       # /^-?[0-9]+(\.[0-9]*)?$/ -> optional minus, at least on digit, followed 
       # by an optional period, followed by digits, ending the string
   
       if ($width !~  /^-?[0-9]*(\.[0-9]*)?$/) {
           $error .= "Invalid width; please type only a number.<br />\n";
       }
       if ($height !~  /^-?[0-9]*(\.[0-9]*)?$/) {
           $error .= "Invalid height; please type only a number.<br />\n";
       }
       if ($lmargin !~  /^-?[0-9]*(\.[0-9]*)?$/) {
           $error .= "Invalid left margin; please type only a number.<br />\n";
       } else {
    # Adjust for LaTeX 1.0 inch margin:
   
    if ($env{"form.${var}.lmarginunit"} eq "in") {
       $helper->{VARS}->{$var.'.lmargin'} = $lmargin - 1;
    } else {
       $helper->{VARS}->{$var.'.lmargin'} = $lmargin - 2.54;
    }
       }
   
       if (!$error) {
           Apache::lonhelper::getHelper()->changeState($self->{NEXTSTATE});
           return 1;
       } else {
           $self->{ERROR_MSG} = $error;
           return 0;
       }
   }
   
   
   
 __END__  __END__
   

Removed from v.1.120  
changed lines
  Added in v.1.550


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