[BACK]Return to lonprintout.pm CVS log [TXT] [DIR] Up to [LON-CAPA] / loncom / interface

Diff for /loncom/interface/lonprintout.pm between versions 1.23 and 1.193

version 1.23, 2002/04/25 21:38:42 version 1.193, 2003/06/23 19:22:00
Line 43  use strict; Line 43  use strict;
 use Apache::Constants qw(:common :http);  use Apache::Constants qw(:common :http);
 use Apache::lonxml;  use Apache::lonxml;
 use Apache::lonnet;  use Apache::lonnet;
   use Apache::loncommon;
 use Apache::inputtags;  use Apache::inputtags;
   use Apache::grades;
 use Apache::edit;  use Apache::edit;
 use Apache::File();  use Apache::File();
   use Apache::lonnavmaps;
   use POSIX qw(strftime);
   use GDBM_File;
   
   
   my %hash;
   my $LaTeXwidth = 0;
   
 sub headerform {  
     my $r = shift;  sub latex_header_footer_remove {
     $r->print(<<ENDHEADER);      my $text = shift;
 <html>      $text =~ s/\\end{document}//;
 <head>      $text =~ s/\\documentclass([^&]*)\\begin{document}//;
 <title>LON-CAPA output for printing</title>      return $text;
 </head>  
 <body bgcolor="FFFFFF">  
 <form method="post" enctype="multipart/form-data" action="/adm/printout" name="printform">  
 <h1>What do you want to print? Make a choice.</h1><br />  
 ENDHEADER  
 }  }
   
   
 sub menu_for_output {  sub character_chart {
     my $r = shift;      my $result = shift;
     $r->print(<<ENDMENUOUT);      $result =~ s/&\#0?0?(7|9);//g;
 <input type="hidden" name="phase" value="two">      $result =~ s/&\#0?(10|13);//g;
 <input type="hidden" name="url" value="$ENV{'form.postdata'}">      $result =~ s/&\#0?32;/ /g;
 <input type="radio" name="choice" value="Standard LaTeX output for current document">  Current document      $result =~ s/&\#0?33;/!/g;
 (you will print what you see on the screen)<br />      $result =~ s/&(\#0?34|quot);/\"/g;
 <input type="radio" name="choice" value="Standard LaTeX output for the primary sequence">  All problems from the primary sequence<br />      $result =~ s/&\#0?35;/\\\#/g;
 <input type="radio" name="choice" value="Standard LaTeX output for whole primary sequence">  The whole primary sequence (problems plus all html and xml files)<br />      $result =~ s/&\#0?36;/\\\$/g;
 <input type="radio" name="choice" value="Standard LaTeX output for the top level sequence">  All problems from the top level sequence<br />      $result =~ s/&\#0?37;/\\%/g; 
 <br /><hr /><br />      $result =~ s/&(\#0?38|amp);/\\&/g; 
 <h1>And what page format do you prefer?</h1>      $result =~ s/&\#(0?39|146);/\'/g;
 <input type="radio" name="layout" value="CBI" checked>  CBI <br />      $result =~ s/&\#0?40;/(/g;
 <input type="radio" name="layout" value="CAPA"> CAPA <br />      $result =~ s/&\#0?41;/)/g;
 <input type="submit" value="Submit your choice">      $result =~ s/&\#0?42;/\*/g;
 </form>      $result =~ s/&\#0?43;/\+/g;
 </body>      $result =~ s/&\#(0?44|130);/,/g;
 </html>      $result =~ s/&\#0?45;/-/g;
 ENDMENUOUT      $result =~ s/&\#0?46;/\./g;
       $result =~ s/&\#0?47;/\//g;
       $result =~ s/&\#0?48;/0/g;
       $result =~ s/&\#0?49;/1/g;
       $result =~ s/&\#0?50;/2/g;
       $result =~ s/&\#0?51;/3/g;
       $result =~ s/&\#0?52;/4/g;
       $result =~ s/&\#0?53;/5/g;
       $result =~ s/&\#0?54;/6/g;
       $result =~ s/&\#0?55;/7/g;
       $result =~ s/&\#0?56;/8/g;
       $result =~ s/&\#0?57;/9/g;
       $result =~ s/&\#0?58;/:/g;
       $result =~ s/&\#0?59;/;/g;
       $result =~ s/&(\#0?60|lt|\#139);/\$<\$/g;
       $result =~ s/&\#0?61;/\$=\$/g;
       $result =~ s/&(\#0?62|gt|\#155);/\$>\$/g;
       $result =~ s/&\#0?63;/\?/g;
       $result =~ s/&\#0?65;/A/g;
       $result =~ s/&\#0?66;/B/g;
       $result =~ s/&\#0?67;/C/g;
       $result =~ s/&\#0?68;/D/g;
       $result =~ s/&\#0?69;/E/g;
       $result =~ s/&\#0?70;/F/g;
       $result =~ s/&\#0?71;/G/g;
       $result =~ s/&\#0?72;/H/g;
       $result =~ s/&\#0?73;/I/g;
       $result =~ s/&\#0?74;/J/g;
       $result =~ s/&\#0?75;/K/g;
       $result =~ s/&\#0?76;/L/g;
       $result =~ s/&\#0?77;/M/g;
       $result =~ s/&\#0?78;/N/g;
       $result =~ s/&\#0?79;/O/g;
       $result =~ s/&\#0?80;/P/g;
       $result =~ s/&\#0?81;/Q/g;
       $result =~ s/&\#0?82;/R/g;
       $result =~ s/&\#0?83;/S/g;
       $result =~ s/&\#0?84;/T/g;
       $result =~ s/&\#0?85;/U/g;
       $result =~ s/&\#0?86;/V/g;
       $result =~ s/&\#0?87;/W/g;
       $result =~ s/&\#0?88;/X/g;
       $result =~ s/&\#0?89;/Y/g;
       $result =~ s/&\#0?90;/Z/g;
       $result =~ s/&\#0?91;/[/g;
       $result =~ s/&\#0?92;/\$\\setminus\$/g;
       $result =~ s/&\#0?93;/]/g;
       $result =~ s/&\#(0?94|136);/\$\\wedge\$/g;
       $result =~ s/&\#(0?95|138|154);/\\underline{\\makebox[2mm]{\\strut}}/g;
       $result =~ s/&\#(0?96|145);/\`/g;
       $result =~ s/&\#0?97;/a/g;
       $result =~ s/&\#0?98;/b/g;
       $result =~ s/&\#0?99;/c/g;
       $result =~ s/&\#100;/d/g;
       $result =~ s/&\#101;/e/g;
       $result =~ s/&\#102;/f/g;
       $result =~ s/&\#103;/g/g;
       $result =~ s/&\#104;/h/g;
       $result =~ s/&\#105;/i/g;
       $result =~ s/&\#106;/j/g;
       $result =~ s/&\#107;/k/g;
       $result =~ s/&\#108;/l/g;
       $result =~ s/&\#109;/m/g;
       $result =~ s/&\#110;/n/g;
       $result =~ s/&\#111;/o/g;
       $result =~ s/&\#112;/p/g;
       $result =~ s/&\#113;/q/g;
       $result =~ s/&\#114;/r/g;
       $result =~ s/&\#115;/s/g;
       $result =~ s/&\#116;/t/g;
       $result =~ s/&\#117;/u/g;
       $result =~ s/&\#118;/v/g;
       $result =~ s/&\#119;/w/g;
       $result =~ s/&\#120;/x/g;
       $result =~ s/&\#121;/y/g;
       $result =~ s/&\#122;/z/g;
       $result =~ s/&\#123;/\\{/g;
       $result =~ s/&\#124;/\|/g;
       $result =~ s/&\#125;/\\}/g;
       $result =~ s/&\#126;/\~/g;
       $result =~ s/&\#131;/\\textflorin /g;
       $result =~ s/&\#132;/\"/g;
       $result =~ s/&\#133;/\$\\ldots\$/g;
       $result =~ s/&\#134;/\$\\dagger\$/g;
       $result =~ s/&\#135;/\$\\ddagger\$/g;
       $result =~ s/&\#137;/\\textperthousand /g;
       $result =~ s/&\#140;/{\\OE}/g;
       $result =~ s/&\#147;/\`\`/g;
       $result =~ s/&\#148;/\'\'/g;
       $result =~ s/&\#149;/\$\\bullet\$/g;
       $result =~ s/&\#150;/--/g;
       $result =~ s/&\#151;/---/g;
       $result =~ s/&\#152;/\$\\sim\$/g;
       $result =~ s/&\#153;/\\texttrademark /g;
       $result =~ s/&\#156;/\\oe/g;
       $result =~ s/&\#159;/\\\"Y/g;
       $result =~ s/&(\#160|nbsp);//g;
       $result =~ s/&(\#161|iexcl);/!\`/g;
       $result =~ s/&(\#162|cent);/\\textcent /g;
       $result =~ s/&(\#163|pound);/\\pounds /g; 
       $result =~ s/&(\#164|curren);/\\textcurrency /g;
       $result =~ s/&(\#165|yen);/\\textyen /g;
       $result =~ s/&(\#166|brvbar);/\\textbrokenbar /g;
       $result =~ s/&(\#167|sect);/\\textsection /g;
       $result =~ s/&(\#168|uml);/\\texthighdieresis /g;
       $result =~ s/&(\#169|copy);/\\copyright /g;
       $result =~ s/&(\#170|ordf);/\\textordfeminine /g;
       $result =~ s/&(\#172|not);/\$\\neg\$/g;
       $result =~ s/&(\#173|shy);/ - /g;
       $result =~ s/&(\#174|reg);/\\textregistered /g;
       $result =~ s/&(\#175|macr);/\$^{-}\$/g;
       $result =~ s/&(\#176|deg);/\$^{\\circ}\$/g;
       $result =~ s/&(\#177|plusmn);/\$\\pm\$/g;
       $result =~ s/&(\#178|sup2);/\$^2\$/g;
       $result =~ s/&(\#179|sup3);/\$^3\$/g;
       $result =~ s/&(\#180|acute);/\\textacute /g;
       $result =~ s/&(\#181|micro);/\$\\mu\$/g;
       $result =~ s/&(\#182|para);/\\P/g;
       $result =~ s/&(\#183|middot);/\$\\cdot\$/g;
       $result =~ s/&(\#184|cedil);/\\c{\\strut}/g;
       $result =~ s/&(\#185|sup1);/\$^1\$/g;
       $result =~ s/&(\#186|ordm);/\\textordmasculine /g;
       $result =~ s/&(\#188|frac14);/\\textonequarter /g;
       $result =~ s/&(\#189|frac12);/\\textonehalf /g;
       $result =~ s/&(\#190|frac34);/\\textthreequarters /g;
       $result =~ s/&(\#191|iquest);/?\`/g;   
       $result =~ s/&(\#192|Agrave);/\\\`{A}/g;  
       $result =~ s/&(\#193|Aacute);/\\\'{A}/g; 
       $result =~ s/&(\#194|Acirc);/\\^{A}/g;
       $result =~ s/&(\#195|Atilde);/\\~{A}/g;
       $result =~ s/&(\#196|Auml);/\\\"{A}/g; 
       $result =~ s/&(\#197|Aring);/{\\AA}/g;
       $result =~ s/&(\#198|AElig);/{\\AE}/g;
       $result =~ s/&(\#199|Ccedil);/\\c{c}/g;
       $result =~ s/&(\#200|Egrave);/\\\`{E}/g;  
       $result =~ s/&(\#201|Eacute);/\\\'{E}/g;    
       $result =~ s/&(\#202|Ecirc);/\\^{E}/g;
       $result =~ s/&(\#203|Euml);/\\\"{E}/g;
       $result =~ s/&(\#204|Igrave);/\\\`{I}/g;
       $result =~ s/&(\#205|Iacute);/\\\'{I}/g;    
       $result =~ s/&(\#206|Icirc);/\\^{I}/g;
       $result =~ s/&(\#207|Iuml);/\\\"{I}/g;    
       $result =~ s/&(\#209|Ntilde);/\\~{N}/g;
       $result =~ s/&(\#210|Ograve);/\\\`{O}/g;
       $result =~ s/&(\#211|Oacute);/\\\'{O}/g;
       $result =~ s/&(\#212|Ocirc);/\\^{O}/g;
       $result =~ s/&(\#213|Otilde);/\\~{O}/g;
       $result =~ s/&(\#214|Ouml);/\\\"{O}/g;    
       $result =~ s/&(\#215|times);/\$\\times\$/g;
       $result =~ s/&(\#216|Oslash);/{\\O}/g;
       $result =~ s/&(\#217|Ugrave);/\\\`{U}/g;    
       $result =~ s/&(\#218|Uacute);/\\\'{U}/g;
       $result =~ s/&(\#219|Ucirc);/\\^{U}/g;
       $result =~ s/&(\#220|Uuml);/\\\"{U}/g;
       $result =~ s/&(\#221|Yacute);/\\\'{Y}/g;
       $result =~ s/&(\#223|szlig);/\\ss/g;
       $result =~ s/&(\#224|agrave);/\\\`{a}/g;
       $result =~ s/&(\#225|aacute);/\\\'{a}/g;
       $result =~ s/&(\#226|acirc);/\\^{a}/g;
       $result =~ s/&(\#227|atilde);/\\~{a}/g;
       $result =~ s/&(\#228|auml);/\\\"{a}/g;
       $result =~ s/&(\#229|aring);/{\\aa}/g;
       $result =~ s/&(\#230|aelig);/{\\ae}/g;
       $result =~ s/&(\#231|ccedil);/\\c{c}/g;
       $result =~ s/&(\#232|egrave);/\\\`{e}/g;
       $result =~ s/&(\#233|eacute);/\\\'{e}/g;
       $result =~ s/&(\#234|ecirc);/\\^{e}/g;
       $result =~ s/&(\#235|euml);/\\\"{e}/g;
       $result =~ s/&(\#236|igrave);/\\\`{i}/g;
       $result =~ s/&(\#237|iacute);/\\\'{i}/g;
       $result =~ s/&(\#238|icirc);/\\^{i}/g;
       $result =~ s/&(\#239|iuml);/\\\"{i}/g;
       $result =~ s/&(\#240|eth);/\$\\partial\$/g;
       $result =~ s/&(\#241|ntilde);/\\~{n}/g;
       $result =~ s/&(\#242|ograve);/\\\`{o}/g;
       $result =~ s/&(\#243|oacute);/\\\'{o}/g;
       $result =~ s/&(\#244|ocirc);/\\^{o}/g;
       $result =~ s/&(\#245|otilde);/\\~{o}/g;
       $result =~ s/&(\#246|ouml);/\\\"{o}/g;
       $result =~ s/&(\#247|divide);/\$\\div\$/g;
       $result =~ s/&(\#248|oslash);/{\\o}/g;
       $result =~ s/&(\#249|ugrave);/\\\`{u}/g; 
       $result =~ s/&(\#250|uacute);/\\\'{u}/g;
       $result =~ s/&(\#251|ucirc);/\\^{u}/g;
       $result =~ s/&(\#252|uuml);/\\\"{u}/g;
       $result =~ s/&(\#253|yacute);/\\\'{y}/g;
       $result =~ s/&(\#255|yuml);/\\\"{y}/g;
       $result =~ s/&\#952;/\$\\theta\$/g;
   #Greek Alphabet
       $result =~ s/&(alpha|\#945);/\$\\alpha \$/g;
       $result =~ s/&(beta|\#946);/\$\\beta \$/g;
       $result =~ s/&(gamma|\#947);/\$\\gamma \$/g;
       $result =~ s/&(delta|\#948);/\$\\delta \$/g;
       $result =~ s/&(epsilon|\#949);/\$\\epsilon \$/g;
       $result =~ s/&(zeta|\#950);/\$\\zeta \$/g;
       $result =~ s/&(eta|\#951);/\$\\eta \$/g;
       $result =~ s/&(theta|\#952);/\$\\theta \$/g;
       $result =~ s/&(iota|\#953);/\$\\iota \$/g;
       $result =~ s/&(kappa|\#954);/\$\\kappa \$/g;
       $result =~ s/&(lambda|\#955);/\$\\lambda \$/g;
       $result =~ s/&(mu|\#956);/\$\\mu \$/g;
       $result =~ s/&(nu|\#957);/\$\\nu \$/g;
       $result =~ s/&(xi|\#958);/\$\\xi \$/g;
       $result =~ s/&(pi|\#960);/\$\\pi \$/g;
       $result =~ s/&(rho|\#961);/\$\\rho \$/g;
       $result =~ s/&(sigma|\#963);/\$\\sigma \$/g;
       $result =~ s/&(tau|\#964);/\$\\tau \$/g;
       $result =~ s/&(upsilon|\#965);/\$\\upsilon \$/g;
       $result =~ s/&(phi|\#966);/\$\\phi \$/g;
       $result =~ s/&(chi|\#967);/\$\\chi \$/g;
       $result =~ s/&(psi|\#968);/\$\\psi \$/g;
       $result =~ s/&(omega|\#969);/\$\\omega \$/g;
       $result =~ s/&(Gamma|\#915);/\$\\Gamma \$/g;
       $result =~ s/&(Delta|\#916);/\$\\Delta \$/g;
       $result =~ s/&(Theta|\#920);/\$\\Theta \$/g;
       $result =~ s/&(Lambda|\#923);/\$\\Lambda \$/g;
       $result =~ s/&(Xi|\#926);/\$\\Xi \$/g;
       $result =~ s/&(Pi|\#928);/\$\\Pi \$/g;
       $result =~ s/&(Sigma|\#931);/\$\\Sigma \$/g;
       $result =~ s/&(Upsilon|\#933);/\$\\Upsilon \$/g;
       $result =~ s/&(Phi|\#934);/\$\\Phi \$/g;
       $result =~ s/&(Psi|\#936);/\$\\Psi \$/g;
       $result =~ s/&(Omega|\#937);/\$\\Omega \$/g;
       return $result;
 }  }
   
   
   sub page_format {
   #
   #Correspondence between $papersize variable and real paper format:
   # 0 - "Letter [8 1/2x11 in]"
   # 1 - "Legal [8 1/2x14 in]"
   # 2 - "Ledger/Tabloid [11x17 in]"
   # 3 - "Executive [7 1/2x10 in]"
   # 4 - "A2 [420x594 mm]"
   # 5 - "A3 [297x420 mm]"
   # 6 - "A4 [210x297 mm]"
   # 7 - "A5 [148x210 mm]"
   # 8 - "A6 [105x148 mm]"
   # 
       my ($papersize,$layout,$numberofcolumns) = @_; 
       my ($textwidth,$textheight,$oddoffset,$evenoffset) = (0,0,0,0);
       if ($papersize eq '0') {
    if ($layout eq 'book') {
       if ($numberofcolumns == 1) {
    $textwidth = '7.1 in';      #'18 cm';
    $textheight = '10.2 in';    #'25.9 cm';
    $oddoffset = '-0.57 in';
    $evenoffset = '-0.57 in';
       } elsif ($numberofcolumns == 2) {
    $textwidth = '3.66 in';     #'93 mm';
    $textheight = '10.2 in';    #'25.9 cm';
    $oddoffset = '-0.57 in';
    $evenoffset = '-0.57 in';
       }
    } elsif ($layout eq 'album') {
       if ($numberofcolumns eq '1') {
    $textwidth = '8.8 in';
    $textheight = '6.8 in';
    $oddoffset = '-40 pt';
    $evenoffset = '-60 pt';
       } elsif ($numberofcolumns == 2) {
    $textwidth = '4.2 in';
    $textheight = '6.8 in';
    $oddoffset = '-40 pt';
    $evenoffset = '-60 pt';
       }
    }
   #    } elsif($papersize eq '1') {
   #    } elsif($papersize eq '2') {
   #    } elsif($papersize eq '3'/) {
       } elsif($papersize eq '6') {
    if ($layout eq 'book') {
       if ($numberofcolumns == 1) {
    $textwidth = '18 cm';
    $textheight = '28 cm';
    $oddoffset = '-0.57 in';
    $evenoffset = '-0.57 in';
       } elsif ($numberofcolumns == 2) {
    $textwidth = '96 mm';
    $textheight = '2 cm';
    $oddoffset = '-0.57 in';
    $evenoffset = '-0.57 in';
       }
    } elsif ($layout eq 'album') {
       if ($numberofcolumns eq '1') {
    $textwidth = '8.5 in';
    $textheight = '7.7 in';
    $oddoffset = '-40 pt';
    $evenoffset = '-60 pt';
       } elsif ($numberofcolumns == 2) {
    $textwidth = '3.9 in';
    $textheight = '7.7 in';
    $oddoffset = '-40 pt';
    $evenoffset = '-60 pt';
       }
    }
   #    } elsif($papersize eq '5') {
   #    } elsif($papersize eq '4') {
   #    } elsif($papersize eq '7') {
   #    } elsif($papersize eq '8') {
       }
       return $textwidth,$textheight,$oddoffset,$evenoffset;
   }
   
   
   sub get_name {
       my ($uname,$udom)=@_;
       if (!defined($uname)) { $uname=$ENV{'user.name'}; }
       if (!defined($udom)) { $uname=$ENV{'user.domain'}; }
       my $plainname=&Apache::loncommon::plainname($uname,$udom);
       if ($plainname=~/^\s*$/) { $plainname=$uname; }
       return &Apache::lonxml::latex_special_symbols($plainname,undef,undef,
     'header');
   }
   
   
   sub page_format_transformation {
       my ($papersize,$layout,$numberofcolumns,$choice,$text,$assignment) = @_; 
       my ($textwidth,$textheight,$oddoffset,$evenoffset);
    $assignment=~s/_/ /g;
           if ($numberofcolumns != 1) {
             ($textwidth,$textheight,$oddoffset,$evenoffset) = &page_format($papersize,$layout,$numberofcolumns);
    } else {
     ($textwidth,$textheight,$oddoffset,$evenoffset) = ($ENV{'form.width'},$ENV{'form.height'},$ENV{'form.leftmargin'},$ENV{'form.leftmargin'});
    }
       my $name = &get_name();
       if ($name =~ /^\s*$/) {
    $name=&Apache::lonxml::latex_special_symbols($ENV{'user.name'},undef,
        undef,'header');
       }
       my $courseidinfo = &Apache::lonxml::latex_special_symbols(&Apache::lonnet::unescape($ENV{'course.'.$ENV{'request.course.id'}.'.description'}),'','','header');
       if ($layout eq 'album') {
       $text =~ s/\\begin{document}/\\setlength{\\oddsidemargin}{$oddoffset}\\setlength{\\evensidemargin}{$evenoffset}\\setlength{\\topmargin}{200pt}\\setlength{\\textwidth}{$textwidth}\\setlength{\\textheight}{$textheight}\\setlength{\\parindent}{20pt}\\setlength{\\marginparwidth}{90pt}\\setlength{\\textfloatsep}{8pt plus 2\.0pt minus 4\.0pt}\\newlength{\\minipagewidth}\\setlength{\\minipagewidth}{\\textwidth\/\$number_of_columns-0\.2cm} \\begin{document}\\setcounter{page}{1}\\noindent\\parbox{\\minipagewidth}{\\noindent\\fbox{\\textbf{$name}} \\hfill  $courseidinfo} \\vskip 5 mm /;
       } elsif ($layout eq 'book') {
    if ($choice ne 'All class print') { 
       $text =~ s/\\begin{document}/\\textheight $textheight\\oddsidemargin = $evenoffset\\evensidemargin = $evenoffset\\textwidth= $textwidth\\newlength{\\minipagewidth}\\setlength{\\minipagewidth}{\\textwidth\/\$number_of_columns-0\.2cm}\\renewcommand{\\ref}{\\keephidden\}\\usepackage{fancyhdr}\\pagestyle{fancy}\\rhead{}\\chead{}\\lhead{\\textbf{$name} - $courseidinfo \\hfill \\thepage \\\\ \\textit{$assignment}}\\begin{document}\\voffset=-0\.8 cm\\setcounter{page}{1}/;
    } 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 /;
    }
       }
       return $text;
   }
   
   
   sub page_cleanup {
       my $result = shift;
    
       $result =~ m/\\end{document}(\d*)$/;
       my $number_of_columns = $1;
       my $insert = '{';
       for (my $id=1;$id<=$number_of_columns;$id++) { $insert .='l'; }
       $insert .= '}';
       $result =~ s/(\\begin{longtable})INSERTTHEHEADOFLONGTABLE\\endfirsthead\\endhead/$1$insert/g;
       $result =~ s/&\s*REMOVETHEHEADOFLONGTABLE\\\\/\\\\/g;
       return $result,$number_of_columns;
   }
   
   
   sub details_for_menu {
   
       my $name_of_resourse = $hash{'title_'.$hash{'ids_'.$ENV{'form.postdata'}}};
       my $symbolic = &Apache::lonnet::symbread($ENV{'form.postdata'});
       my ($map,$id,$resource)=split(/___/,$symbolic);
       $map=&Apache::lonnet::clutter($map);
       my $name_of_sequence;
       $name_of_sequence = $hash{'title_'.$hash{'ids_'.$map}};
       if ($name_of_sequence =~ /^\s*$/) {
    $map =~ m|([^/]+)$|;
    $name_of_sequence = $1;
       }
       my $name_of_map = $hash{'title_'.$hash{'ids_'.&Apache::lonnet::clutter($ENV{'request.course.uri'})}};
       if ($name_of_map =~ /^\s*$/) {
    $ENV{'request.course.uri'} =~ m|([^/]+)$|;
    $name_of_map = $1;
       }
       return ($name_of_resourse,$name_of_sequence,$name_of_map);
   
   }
   
   
   sub latex_corrections {
   
       my ($number_of_columns,$result) = @_;
   
   #    $result =~ s/\\includegraphics{/\\includegraphics\[width=\\minipagewidth\]{/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/$1/g;
   #-- LaTeX corrections     
       my $first_comment = index($result,'<!--',0);
       while ($first_comment != -1) {
    my $end_comment = index($result,'-->',$first_comment);
    substr($result,$first_comment,$end_comment-$first_comment+3) = '';
    $first_comment = index($result,'<!--',$first_comment);
       }
       $result =~ s/^\s+$//gm; #remove empty lines
       $result =~ s/(\s)(\s+)/$1/g; #removes more than one empty space
       $result =~ s/\\\\\s*\\vskip/\\vskip/gm;
       $result =~ s/\\\\\s*\\noindent\s*(\\\\)+/\\\\\\noindent /g;
       $result =~ s/{\\par }\s*\\\\/\\\\/gm;
    $result =~ s/\\\\\s+\[/ \[/g;
       $result =~ s/\b__+\b/\\makebox\[1 cm\]\[b\]{\\hrulefill}/g;
       #conversion of html characters to LaTeX equivalents
       if ($result =~ m/&(\w+|#\d+);/) {
    $result = &character_chart($result);
       }
       $result =~ s/(\\end{tabular})\s*\\vskip 0 mm/$1/g;
       $result =~ s/(\\begin{enumerate})\s*\\noindent/$1/g;
   
       return $result;
   }
   
   
 sub output_data {  sub output_data {
     my $r = shift;      my ($r,$helper,$rparmhash) = @_;
       my %parmhash = %$rparmhash;
       my $bodytag=&Apache::loncommon::bodytag('Preparing Printout');
     $r->print(<<ENDPART);      $r->print(<<ENDPART);
 <html>  <html>
 <head>  <head>
 <title>LON-CAPA output for printing</title>  <title>LON-CAPA output for printing</title>
 </head>  </head>
 <body bgcolor="FFFFFF">  $bodytag
 <hr>  Please stand by while processing your print request, this may take some time ...
 ENDPART  ENDPART
   
     my $choice = $ENV{'form.choice'};      my $format_from_helper = $helper->{'VARS'}->{'FORMAT'};
     my $layout = $ENV{'form.layout'};      my ($result,$selectionmade) = ('','');
     my $laystyle = 'book';      my $number_of_columns = 1; #used only for pages to determine the width of the cell
     my $result = '';      my @temporary_array=split /\|/,$format_from_helper;
     my %mystyle;      my ($laystyle,$numberofcolumns,$papersize)=@temporary_array;
     my $filename;      if ($laystyle eq 'L') {
    $laystyle='album';
     if ($choice eq 'Standard LaTeX output for current document') {      } else {
       my %moreenv;   $laystyle='book';
       my $currequest=$ENV{'request.filename'};      }
       $moreenv{'form.grade_target'}='tex';      my ($textwidth,$textheight,$oddoffset,$evenoffset) = &page_format($papersize,$laystyle,$numberofcolumns);
       $moreenv{'request.filename'}=$ENV{'form.url'};      my $assignment =  $ENV{'form.assignment'};
       &Apache::lonnet::appenv(%moreenv);      my $LaTeXwidth; 
       my $texversion=&Apache::lonnet::ssi($ENV{'form.url'});      if ($textwidth=~/(\d+\.?\d*)\s*cm/) {
       &Apache::lonnet::delenv('form.grade_target');   $LaTeXwidth = $1*10;
       %moreenv = ();      } elsif ($textwidth=~/(\d+\.?\d*)\s*mm/) {
       $moreenv{'request.filename'}=$currequest;   $LaTeXwidth = $1;
       &Apache::lonnet::appenv(%moreenv);      } elsif ($textwidth=~/(\d+\.?\d*)\s*in/) {
       $result .= $texversion;   $LaTeXwidth = $1*25.4;
       }
     } elsif ($choice eq 'Standard LaTeX output for the primary sequence' or $choice eq 'Standard LaTeX output for whole primary sequence') {      $LaTeXwidth.=' mm';
 #-- where is the primary sequence containing file?      
  my %moreenv;      if ($helper->{'VARS'}->{'PRINT_TYPE'} eq 'current_document') {
  my $symbolic = &Apache::lonnet::symbread($ENV{'form.url'});        #-- single document - problem, page, html, xml, ...
  $_ = $symbolic;   my $currentURL;
  m/([^_]+)_/;   if ($helper->{'VARS'}->{'construction'} ne '1') {
  my $primary_sequence = '/res/'.$1;              #prints published resource
 #-- open and analyses the primary sequence      $currentURL=$helper->{'VARS'}->{'postdata'};
  my $sequence_file=&Apache::lonnet::filelocation("",$primary_sequence);   } else {
  my $sequencefilecontents=&Apache::lonnet::getfile($sequence_file);              #prints resource from the construction space
  my @master_seq = &content_map($sequencefilecontents);      $currentURL=$helper->{'VARS'}->{'filename'};
 #-- produce an output string      $currentURL=~s/\/home\//\/~/;
       $currentURL=~s/public_html\///;
    }
    $selectionmade = 1;
    if ($currentURL=~/\.(problem|exam|quiz|assess|survey|form|library|page|xml|html|htm|xhtml|xhtm)$/) {
       my %moreenv;
       $moreenv{'request.filename'}=$currentURL;
       my %form;
       $form{'grade_target'}='tex';
       $form{'textwidth'}=$LaTeXwidth;
       my $rndseed=time;
       $form{'rndseed'}=$rndseed;
       &Apache::lonnet::appenv(%moreenv);
       my $texversion=&Apache::lonnet::ssi($currentURL,%form);
       &Apache::lonnet::delenv('form.counter');
       &Apache::lonnet::delenv('request.filename');
       if($helper->{'VARS'}->{'ANSWER_TYPE'} eq 'no') {
    my %form;
    $form{'grade_target'}='answer';
    $form{'answer_output_mode'}='tex';
    $form{'rndseed'}=$rndseed;
    my $answer=&Apache::lonnet::ssi($currentURL,%form);
    $texversion=~s/(\\keephidden{ENDOFPROBLEM})/$answer$1/;
       }
       $result .= $texversion;
       if ($currentURL=~m/\.page\s*$/) {
    ($result,$number_of_columns) = &page_cleanup($result);
       }
    } else {
   #  $result='\documentclass[letterpaper]{article}\usepackage{calc}\begin{document}Printout of this type of document is currently not supported: ';
   #  if ($ENV{'form.url'}=~/\/(aboutme|syllabus|bulletinboard|smppg)$/) {
   #      $result.=$1;
   #  } else {
   #      $result.=$ENV{'form.url'};
   #  }
   #  $result.=' \end{document}'
    }
       } elsif (($helper->{'VARS'}->{'PRINT_TYPE'} eq 'map_problems') or
                ($helper->{'VARS'}->{'PRINT_TYPE'} eq 'map_problems_pages') or
                ($helper->{'VARS'}->{'PRINT_TYPE'} eq 'all_problems')) { 
           #-- produce an output string
    my %form=();   
    $form{'grade_target'}='tex';
    $form{'textwidth'}=$LaTeXwidth;
    $form{'problem_split'}=$parmhash{'problem_stream_switch'};
    my $flag_latex_header_remove = 'NO';
    my $flag_page_in_sequence = 'NO';
    my @master_seq=split /\|\|\|/, $helper->{'VARS'}->{'RESOURCES'};
    my $prevassignment='';
  for (my $i=0;$i<=$#master_seq;$i++) {   for (my $i=0;$i<=$#master_seq;$i++) {
     $_ = $master_seq[$i];      $master_seq[$i]=~/___\d+___(.*)$/;
     m/\"(.*)\"/;      my $urlp='/res/'.$1;
             $_ = $1;      if ($helper->{'VARS'}->{'PRINT_TYPE'} eq 'map_problems') {
             my $urlp = $1;   $selectionmade = 2;
     if ($choice eq 'Standard LaTeX output for the primary sequence') {      } elsif ($helper->{'VARS'}->{'PRINT_TYPE'} eq 'map_problems_pages') {
  if (/\.(problem|exam|quiz|assess|survey|form|library)/) {   $selectionmade = 3;
     my %moreenv;      } elsif ($helper->{'VARS'}->{'PRINT_TYPE'} eq 'all_problems') {
     $moreenv{'form.grade_target'}='tex';   $selectionmade = 4;
     &Apache::lonnet::appenv(%moreenv);      }
     my $texversion=&Apache::lonnet::ssi($urlp);      $form{'symb'}=$master_seq[$i];
     &Apache::lonnet::delenv('form.grade_target');      $master_seq[$i]=~/\/([^\/]+)\.sequence_/;
     $result .= $texversion;              my $assignment=' '.$1.' ';
  }      #&Apache::lonnet::logthis("Trying to get $urlp with symb $master_seq[$i]");
       my $texversion=&Apache::lonnet::ssi($urlp,%form);
       if ($urlp=~/\.page$/) {
    ($texversion,my $number_of_columns_page) = &page_cleanup($texversion);
    if ($number_of_columns_page > $number_of_columns) {$number_of_columns=$number_of_columns_page;} 
    $texversion =~ s/\\end{document}\d*/\\end{document}/;
    $flag_page_in_sequence = 'YES';
       } 
       if ($flag_latex_header_remove ne 'NO') {
    $texversion = &latex_header_footer_remove($texversion);
     } else {      } else {
  $moreenv{'form.grade_target'}='tex';   $texversion =~ s/\\end{document}//;
  &Apache::lonnet::appenv(%moreenv);  
  my $texversion=&Apache::lonnet::ssi($urlp);  
  &Apache::lonnet::delenv('form.grade_target');  
  $result .= $texversion;      
     }      }
  }      if($helper->{'VARS'}->{'ANSWER_TYPE'} eq 'no') {
 #-- additional cleanup for output   my %form;
  my $first_app = index($result,'\documentclass',0);   $form{'grade_target'}='answer';
  $first_app = index($result,'\documentclass',$first_app+5);   $form{'answer_output_mode'}='tex';
  while ($first_app != -1) {   my $answer=&Apache::lonnet::ssi($urlp,%form);
     my $second_app = index($result,'begin{document}',$first_app);   $texversion=~s/(\\keephidden{ENDOFPROBLEM})/$answer$1/;
     $first_app = rindex($result,'\end{document}',$first_app);  
     substr($result,$first_app,$second_app-$first_app+15) = '\vskip 3 mm';  
     $first_app = index($result,'\documentclass',$first_app+5);  
  }  
     }  elsif ($choice eq 'Standard LaTeX output for the top level sequence') {  
  my @master_seq = ();  
  my @add_file_seq = ();  
 #-- where is the main sequence of the course?  
  my $main_seq = '/res/'.$ENV{'request.course.uri'};  
  my $file=&Apache::lonnet::filelocation("",$main_seq);  
  my $filecontents=&Apache::lonnet::getfile($file);  
  my @file_seq = &content_map($filecontents);  
 #-- do we have any other sequence inside?  
  my $i=0;  
  while ($i<=$#file_seq) {  
     $_ = $file_seq[$i];  
     if (/\.sequence$/) {  
  $file = &Apache::lonnet::filelocation("",$file_seq[$i]);  
  $filecontents=&Apache::lonnet::getfile($file);  
  @add_file_seq = &content_map($filecontents);  
  splice(@file_seq,$i,1,@add_file_seq);  
  @add_file_seq = ();  
  $i = -1;  
     }      }
     $i++;  #    $result .= $texversion;
       if (($selectionmade == 4) and ($assignment ne $prevassignment) and ($i>1)) {
    my $name = &get_name();
    if ($name =~ /^\s*$/) {
       $name=&Apache::lonxml::latex_special_symbols($ENV{'user.name'},undef,
    undef,'header');
    }
    my $courseidinfo = &Apache::lonxml::latex_special_symbols(&Apache::lonnet::unescape($ENV{'course.'.$ENV{'request.course.id'}.'.description'}),'','','header');
    $prevassignment=$assignment;
    $result .='\newpage \noindent\parbox{\minipagewidth}{\noindent\\lhead{\\textit{\\textbf{'.$name.'}} - '.$courseidinfo.' \\hfill \\thepage \\\\ \\textit{'.$assignment.'}}} \vskip -5 mm ';
       }
       $result .= $texversion;
       $flag_latex_header_remove = 'YES';   
  }   }
  @master_seq = @file_seq;   &Apache::lonnet::delenv('form.counter');
 #-- produce an output string   if ($flag_page_in_sequence eq 'YES') {$result =~ s/\\usepackage{calc}/\\usepackage{calc}\\usepackage{longtable}/;}
  for (my $i=0;$i<=$#master_seq;$i++) {   $result .= '\end{document}';
     $_ = $master_seq[$i];       } elsif ($helper->{'VARS'}->{'PRINT_TYPE'} eq 'problems_for_students') { 
     m/\"(.*)\"/;       #-- prints assignments for whole class or for selected students  
             $_ = $1;   $selectionmade=5;
             my $urlp = $1;   my @students=split /\|\|\|/, $helper->{'VARS'}->{'STUDENTS'};
             if (/\.(problem|exam|quiz|assess|survey|form|library)/) {   my @master_seq=split /\|\|\|/, $helper->{'VARS'}->{'RESOURCES'};
  my %moreenv;   #loop over students
  $moreenv{'form.grade_target'}='tex';   my $flag_latex_header_remove = 'NO'; 
  &Apache::lonnet::appenv(%moreenv);   my %moreenv;
  my $texversion=&Apache::lonnet::ssi($urlp);   $moreenv{'form.textwidth'}=$LaTeXwidth;
  &Apache::lonnet::delenv('form.grade_target');   &Apache::lonnet::appenv(%moreenv);
  $result .= $texversion;           my %prog_state=&Apache::lonhtmlcommon::Create_PrgWin($r,'Print Status','Class Print Status',$#students+1);
    foreach my $person (@students) {
       my $current_output = ''; 
   #    my ($usersection,$username,$userdomain) = split /:/,$person;
       my ($username,$userdomain) = split /:/,$person;
       my $fullname = &get_name($username,$userdomain);
               #goes through all resources, checks if they are available for current student, and produces output   
       foreach my $curresline (@master_seq)  {
    if ($curresline=~ m/\.(problem|exam|quiz|assess|survey|form|library)$/) {
       my ($map,$id,$res_url) = split(/___/,$curresline);
       if (&Apache::lonnet::allowed('bre',$res_url)) {
    my $rendered = &Apache::loncommon::get_student_view($curresline,$username,$userdomain,
                                                                           $ENV{'request.course.id'},'tex');
    if ($flag_latex_header_remove eq 'YES') {
       $rendered = &latex_header_footer_remove($rendered);
    } else {
       $rendered =~ s/\\end{document}//;
    }
    if($helper->{'VARS'}->{'ANSWER_TYPE'} eq 'no') {
       my %form;
       $form{'answer_output_mode'}='tex';
       my $ansrendered = &Apache::loncommon::get_student_answers($curresline,$username,$userdomain,$ENV{'request.course.id'},%form);
       $rendered=~s/(\\keephidden{ENDOFPROBLEM})/$ansrendered$1/;
    }
    $current_output .= $rendered;
       }
       $flag_latex_header_remove = 'YES';
    }
     }      }
       my $courseidinfo = $ENV{'course.'.$ENV{'request.course.id'}.'.description'};
       if ($current_output=~/\\documentclass/) {
    $current_output =~ s/\\begin{document}/\\setlength{\\topmargin}{1cm} \\begin{document}\\noindent\\lhead{\\textit{\\textbf{$fullname}} - $courseidinfo \\hfill \\thepage \\\\ \\textit{$helper->{VARS}->{'assignment'}}}\\vskip 3 mm /;
       } else {
    my $blanspages = '';
    for (my $j=0;$j<$helper->{'VARS'}->{'EMPTY_PAGES'};$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 '.$blanspages.'\setcounter{page}{1}\noindent\parbox{\minipagewidth}{\noindent\\lhead{\\textit{\\textbf{'.$fullname.'}} - '.$courseidinfo.' \\hfill \\thepage \\\\ \\textit{'.$helper->{VARS}->{'assignment'}.'}}} \vskip -5 mm '.$current_output;
       }
       $result .= $current_output;
       &Apache::lonnet::delenv('form.counter');    
       &Apache::lonxml::init_counter(); 
       &Apache::lonhtmlcommon::Increment_PrgWin($r,\%prog_state,
       'last student '.$fullname);
  }   }
 #-- additional cleanup for output   &Apache::lonhtmlcommon::Close_PrgWin($r,\%prog_state);
  my $first_app = index($result,'\documentclass',0);   $result .= '\end{document}';
  $first_app = index($result,'\documentclass',$first_app+5);   &Apache::lonnet::delenv('form.textwidth');
  while ($first_app != -1) {      } elsif ($helper->{'VARS'}->{'PRINT_TYPE'} eq 'problems_from_directory') {      
     my $second_app = index($result,'begin{document}',$first_app);      #prints selected problems from the subdirectory 
     $first_app = rindex($result,'\end{document}',$first_app);   $selectionmade = 6;
     substr($result,$first_app,$second_app-$first_app+15) = '\vskip 3 mm';          my @list_of_files=split /\|\|\|/, $helper->{'VARS'}->{'FILES'};
     $first_app = index($result,'\documentclass',$first_app+5);   @list_of_files=sort @list_of_files;
    my $flag_latex_header_remove = 'NO'; 
    my $rndseed=time;
    for (my $i=0;$i<=$#list_of_files;$i++) {
       my $urlp = $list_of_files[$i];
       if ($urlp=~/\//) {
    my %form;
    $form{'grade_target'}='tex';
    $form{'textwidth'}=$LaTeXwidth;
    $form{'rndseed'}=$rndseed;
    if ($urlp =~ m|/home/([^/]+)/public_html|) {
       $urlp =~ s|/home/([^/]*)/public_html|/~$1|;
    } else {
       $urlp =~ s|^/home/httpd/html||;
    }
    my $texversion=&Apache::lonnet::ssi($urlp,%form);
    if($helper->{'VARS'}->{'ANSWER_TYPE'} eq 'no') {
       my %form;
       $form{'grade_target'}='answer';
       $form{'answer_output_mode'}='tex';
       $form{'rndseed'}=$rndseed;
       my $answer=&Apache::lonnet::ssi($urlp,%form);
       $texversion=~s/(\\keephidden{ENDOFPROBLEM})/$answer$1/;
    }
                   #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;
       }
       $flag_latex_header_remove = 'YES';  
  }   }
    if ($helper->{VARS}->{'construction'} eq '1') {$result=~s/(\\typeout)/ RANDOM SEED IS $rndseed $1/;}
    $result .= '\end{document}';      
     }      }
 #-- corrections for the different page formats  #-------------------------------------------------------- corrections for the different page formats
     if ($layout eq 'CBI') {      $result = &page_format_transformation($papersize,$laystyle,$numberofcolumns,$helper->{'VARS'}->{'PRINT_TYPE'},$result,$helper->{VARS}->{'assignment'});
  $result =~ s/\\begin{document}/\\setlength{\\oddsidemargin}{-40pt}\\setlength{\\evensidemargin}{-60pt}\\setlength{\\topmargin}{200pt}\\setlength{\\textwidth}{4\.4in}\\setlength{\\textheight}{6\.8in}\\setlength{\\parindent}{20pt}\\setlength{\\marginparwidth}{90pt}\\setlength{\\textfloatsep}{8pt plus 2\.0pt minus 4\.0pt} \\begin{document}/;      $result = &latex_corrections($number_of_columns,$result);
         $laystyle = 'album';      #changes page's parameters for the one column output 
     } elsif ($layout eq 'CAPA') {  #    if ($numberofcolumns == 1) {
         my $courseidinfo = $ENV{'request.role'};  # $result =~ s/\\textwidth= 9cm/\\textwidth= $ENV{'form.width'}/;
         $_ = $courseidinfo;  # $result =~ s/\\textheight 25\.9cm/\\textheight $ENV{'form.height'}/;
         m/.*\/(.*)/;  # $result =~ s/\\evensidemargin = -0\.57in/\\evensidemargin= $ENV{'form.leftmargin'}/;
         $courseidinfo = $ENV{'course.physnet_'.$1.'.description'};  # $result =~ s/\\oddsidemargin = -0\.57in/\\oddsidemargin= $ENV{'form.leftmargin'}/;
  $result =~ s/\\documentclass\[letterpaper\]{article}/\\documentclass\[twocolumn\]{article}/;  #    }
  $result =~ s/\\begin{document}/\\textheight 25\.9cm\\oddsidemargin = -0\.57in\\evensidemargin = -0\.57in\\textwidth= 7\.7in\\begin{document}\\voffset=-1\.8cm\\setcounter{page}{1}\\noindent\\fbox{\\textbf{$ENV{'environment.firstname'} $ENV{'environment.lastname'}}}\\hskip 1\.4in $courseidinfo \\vskip 5 mm /;  
  $result =~ s/\\includegraphics/\\includegraphics\[width=9\.0 cm\]/g;  
  $result =~ s/(\\end{document})/\\newline\\noindent\\makebox\[9.0cm\]\[b\]{\\hrulefill}\\newline\\noindent\\tiny Dept\. of Physics and Astronomy, MSU\\makebox\[1.5cm\]\[b\]{\\hfill}LON-CAPA\\copyright MSU GNU\/GPS $1/;  
     }  
 #-- LaTeX corrections       
     my $first_comment = index($result,'<!--',0);  
     while ($first_comment != -1) {  
  my $end_comment = index($result,'-->',$first_comment);  
  substr($result,$first_comment,$end_comment-$first_comment+3) = '';  
  $first_comment = index($result,'<!--',$first_comment);  
     }  
     $result =~ s/^\s+$//gm; #remove empty lines  
     $result =~ s/%/\\%/g;   #corrects %  
     $result =~ s/(\s)+/$1/g; #removes more than one empty space  
     $result =~ s/\\\\\s*\\vskip/\\vskip/gm;  
     $result =~ s/ (<|>|) / \$$1\$ /g; #corrects < or >  
     $result =~ s/\\\\\s*\\noindent\s*(\\\\)+/\\\\\\noindent/g;  
     $result =~ s/{\\par }\s*\\\\/\\\\/gm;  
 #-- Do all of eps figures exist?  
     my $needconvert = 0;  
     $_ = $result;  
     if (/\\needepsconversion/) { $needconvert = 1; }    
 #-- writing .tex file in prtspool   #-- writing .tex file in prtspool 
     my $temp_file;      my $temp_file;
     $filename = "/home/httpd/prtspool/$ENV{'user.name'}$ENV{'user.domain'}temp$ENV{'user.login.time'}.tex";      my $filename = "/home/httpd/prtspool/$ENV{'user.name'}_$ENV{'user.domain'}_printout_".time."_".rand(10000000).".tex";
     unless ($temp_file = Apache::File->new('>'.$filename)) {      unless ($temp_file = Apache::File->new('>'.$filename)) {
  $r->log_error("Couldn't open $filename for output $!");   $r->log_error("Couldn't open $filename for output $!");
  return SERVER_ERROR;    return SERVER_ERROR; 
     }       } 
     print $temp_file $result;      print $temp_file $result;
   
   #<meta http-equiv="Refresh" content="0; url=/cgi-bin/printout.pl?$filename&$laystyle&$numberofcolumns&$selectionmade">
 $r->print(<<FINALEND);  $r->print(<<FINALEND);
 <meta http-equiv="Refresh" content="0; url=/cgi-bin/printout.pl?$filename&$laystyle&$needconvert">  <meta http-equiv="Refresh" content="0; url=/cgi-bin/printout.pl?$filename&$laystyle&$numberofcolumns&$selectionmade">
 </body>  </body>
 </html>  </html>
 FINALEND  FINALEND
Line 258  FINALEND Line 786  FINALEND
   
   
   
   sub handler {
   
 sub content_map {      my $r = shift;
 #-- find a list of files to print      my $helper;
     my $map_string = shift;  
     my @number_seq = ();  
     my @file_seq = ();  
     my $startlink = index($map_string,'<link',0);  
     my $endlink = index($map_string,'</link>',$startlink);  
     my $chunk = substr($map_string,$startlink,$endlink-$startlink+7);  
     $_ = $chunk;  
     m/from=\"(\d+)\"/;  
     push @number_seq,$1;  
     while ($startlink != -1) {  
  $endlink = index($map_string,'</link>',$startlink);  
  $chunk = substr($map_string,$startlink,$endlink-$startlink+7);  
  substr($map_string,$startlink,$endlink-$startlink+7) = '';  
  $_ = $chunk;  
         m/to=\"(\d+)\"/;  
  push @number_seq,$1;  
  $startlink = index($map_string,'from="'.$1.'"',$startlink);  
  $startlink = rindex($map_string,'<link ',$startlink);  
     }  
     my $stalink = index($map_string,' to="'.$number_seq[0].'"',$startlink);  
     while ($stalink != -1) {  
  $startlink = rindex($map_string,'<link ',$stalink);  
  $endlink = index($map_string,'</link>',$startlink);  
  $chunk = substr($map_string,$startlink,$endlink-$startlink+7);  
  substr($map_string,$startlink,$endlink-$startlink+7) = '';  
  $_ = $chunk;  
         m/from=\"(\d+)\"/;  
  unshift @number_seq,$1;  
  $stalink = index($map_string,' to="'.$number_seq[0].'"',0);  
     }  
     for (my $i=0;$i<=$#number_seq;$i++) {  
  $stalink = index($map_string,' id="'.$number_seq[$i].'"',0);  
         {      
     my $ahed1 = index($map_string,'src="',$stalink);  
     my $ahed2 = index($map_string,'</resource>',$stalink);  
     if ($ahed1 != -1) {  
  if ($ahed1 < $ahed2) {  
     $startlink = $ahed1;  
  } else {  
     $startlink = rindex($map_string,'src="',$stalink);  
  }  
     } else {  
  $startlink = rindex($map_string,'src="',$stalink);  
     }  
   
  }  #    my $loaderror=&Apache::lonnet::overloaderror($r);
  $startlink = index($map_string,'"',$startlink);  #    if ($loaderror) { return $loaderror; }
  $endlink = index($map_string,'"',$startlink+1);  #    $loaderror=
  $chunk = substr($map_string,$startlink,$endlink-$startlink+1);  #       &Apache::lonnet::overloaderror($r,
  push @file_seq,$chunk;  #         $ENV{'course.'.$ENV{'request.course.id'}.'.home'});
   #    if ($loaderror) { return $loaderror; }
   
       my $result = printHelper($r);
       if (!ref($result)) {
    return $result;
     }      }
     return @file_seq;      $helper = $result;
 }     
   # my $key; 
   # foreach $key (keys %{$helper->{'VARS'}}) {
   #    $r->print(' '.$key.'->'.$helper->{'VARS'}->{$key}.'<-<br />');
   # }
   # return OK;
   
       my %parmhash=&Apache::lonnet::coursedescription($ENV{'request.course.id'});
       
   
       &output_data($r,$helper,\%parmhash);
       return OK;
   } 
   
 sub handler {  use Apache::lonhelper;
   
   sub printHelper {
     my $r = shift;      my $r = shift;
     $r->content_type('text/html');  
       if ($ENV{'request.course.id'}) {
    my $fn=$ENV{'request.course.fn'};
    tie(%hash,'GDBM_File',"$fn.db",&GDBM_READER(),0640);
       }
   
       if ($r->header_only) {
           if ($ENV{'browser.mathml'}) {
               $r->content_type('text/xml');
           } else {
               $r->content_type('text/html');
           }
           $r->send_http_header;
           return OK;
       }
   
       # Send header, nocache
       if ($ENV{'browser.mathml'}) {
           $r->content_type('text/xml');
       } else {
           $r->content_type('text/html');
       }
       &Apache::loncommon::no_cache($r);
     $r->send_http_header;      $r->send_http_header;
       $r->rflush();
   
       # Unfortunately, this helper is so complicated we have to
       # write it by hand
   
       Apache::loncommon::get_unprocessed_cgi($ENV{QUERY_STRING});
       
       my $helper = Apache::lonhelper::helper->new("Printing Helper");
       $helper->declareVar('symb');
       $helper->declareVar('postdata');    
       $helper->declareVar('filename');
       $helper->declareVar('construction');
       $helper->declareVar('assignment');
       
       # This will persistently load in the data we want from the
       # very first screen.
       # Detect whether we're coming from construction space
       if ($ENV{'form.postdata'} =~ /http:\/\// ) {
           $ENV{'form.postdata'} =~ /http:\/\/[^\/]+\/~([^\/]+)\/(.*)/;
           $helper->{VARS}->{'filename'} = "/home/$1/public_html/$2";
           $helper->{VARS}->{'construction'} = 1;
       } else {
           if ($ENV{'form.postdata'}) {
               $helper->{VARS}->{'symb'} = &Apache::lonnet::symbread($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'});
           }
       }
   
 #-- start form      if ($ENV{'form.symb'}) {
     &headerform($r);          $helper->{VARS}->{'symb'} = $ENV{'form.symb'};
 #-- menu for output  
     unless  ($ENV{'form.phase'}) {  
  &menu_for_output($r);  
     }  
 #-- core part   
     if ($ENV{'form.phase'} eq 'two') {  
  &output_data($r);  
     }      }
       if ($ENV{'form.url'}) {
           $helper->{VARS}->{'symb'} = &Apache::lonnet::symbread($helper->{VARS}->{'postdata'});
   
       }
       
       my ($resourceTitle,$sequenceTitle,$mapTitle) = &details_for_menu;
       if ($sequenceTitle ne '') {$helper->{VARS}->{'assignment'}=$sequenceTitle;}
   
       
       # Extract map
       my $symb = $helper->{VARS}->{'symb'};
       my ($map, $id, $url);
       my $subdir;
   
       # 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($helper->{VARS}->{'filename'}, '/') + 1);
       } else {
           ($map, $id, $url) = split(/___/, $symb);
           $helper->{VARS}->{'postdata'} = Apache::lonnet::clutter($url);
   
           if (!$resourceTitle) { # if the resource doesn't have a title, use the filename
               my $url = $helper->{VARS}->{'postdata'};
               $resourceTitle = substr($url, rindex($url, '/') + 1);
           }
           $subdir = &Apache::lonnet::filelocation("", $url);
       }
   
       my $userCanSeeHidden = Apache::lonnavmaps::advancedUser();
   
       Apache::lonhelper::registerHelperTags();
   
       # "Delete everything after the last slash."
       $subdir =~ s|/[^/]+$||;
       if (not $helper->{VARS}->{'construction'}) {
    $subdir='/home/httpd/html/res/'.$subdir;
       }
       # "Remove all duplicate slashes."
       $subdir =~ s|/+|/|g;
   
       # What can be printed is a very dynamic decision based on
       # lots of factors. So we need to dynamically build this list.
       # To prevent security leaks, states are only added to the wizard
       # if they can be reached, which ensures manipulating the form input
       # won't allow anyone to reach states they shouldn't have permission
       # to reach.
   
       # printChoices is tracking the kind of printing the user can
       # do, and will be used in a choices construction later.
       # In the meantime we will be adding states and elements to
       # the helper by hand.
       my $printChoices = [];
       my $paramHash;
   
       if ($resourceTitle) {
           push @{$printChoices}, ["<b>$resourceTitle</b> (prints what you just saw on the screen)", 'current_document', 'PAGESIZE'];
       }
   
   #    $r->print($helper->{VARS}->{'postdata'});
   
       # If we're in a sequence...
       if ($helper->{'VARS'}->{'construction'} ne '1') {
           # Allow problems from sequence
           push @{$printChoices}, ["Problem(s) from <b>$sequenceTitle</b>", 'map_problems', 'CHOOSE_PROBLEMS'];
           # Allow all resources from sequence
           push @{$printChoices}, ["Everything (problem(s), page(s), html/xml file(s)) from <b>$sequenceTitle</b>", 'map_problems_pages', 'CHOOSE_PROBLEMS_HTML'];
   
           my $isProblem = '$res->is_problem()';
    $isProblem .= ' && !$res->randomout()' if !$userCanSeeHidden;
           my $isProblemOrMap = '$res->is_problem() || $res->is_map()';
           my $isNotMap = '!$res->is_map()';
    $isNotMap .= ' && !$res->randomout()' if !$userCanSeeHidden;
           my $symb = '$res->symb()';
           my $helperFragment = <<HELPERFRAGMENT;
     <state name="CHOOSE_PROBLEMS" title="Select Problem(s) to print">
       <message>(mark them then click "next" button) <br /></message>
       <resource variable="RESOURCES" multichoice="1" toponly='1'>
         <nextstate>PAGESIZE</nextstate>
         <filterfunc>return $isProblem;</filterfunc>
         <mapurl>$map</mapurl>
         <valuefunc>return $symb;</valuefunc>
         </resource>
       </state>
   
     <state name="CHOOSE_PROBLEMS_HTML" title="Select Resource(s) to print">
       <message>(mark them then click "next" button) <br /></message>
       <resource variable="RESOURCES" multichoice="1" toponly='1'>
         <nextstate>PAGESIZE</nextstate>
         <filterfunc>return $isNotMap;</filterfunc>
         <mapurl>$map</mapurl>
         <valuefunc>return $symb;</valuefunc>
         </resource>
       </state>
   HELPERFRAGMENT
   
           &Apache::lonxml::xmlparse($r, 'helper', $helperFragment); 
       }
   
       # If the user is priviledged, allow them to print all 
       # problems in the course, optionally for selected students
       if (($ENV{'request.role'}=~m/^cc\./ or $ENV{'request.role'}=~m/^in\./ or $ENV{'request.role'}=~m/^ta\./) and ($helper->{VARS}->{'postdata'}=~/\/res\//)) { 
           push @{$printChoices}, ['<b>Problems</b> in this course', 'all_problems', 'ALL_PROBLEMS'];
           push @{$printChoices}, ["Problems from <b>$sequenceTitle</b> for selected students", 'problems_for_students', 'CHOOSE_STUDENTS'];
   
           my $isProblem = '$res->is_problem()';
    $isProblem .= ' && !$res->randomout()' if !$userCanSeeHidden;
           my $isProblemOrMap = '($res->is_problem() || $res->is_map())';
    $isProblemOrMap .= ' && !$res->randomout()' if !$userCanSeeHidden;
           my $symb = '$res->symb()';
           &Apache::lonxml::xmlparse($r, 'helper', <<CHOOSE_STUDENTS);
     <state name="ALL_PROBLEMS" title="Select Problem(s) to print">
       <message>(mark them then click "next" button) <br /></message>
       <resource variable="RESOURCES" multichoice="1" suppressEmptySequences='1'>
         <nextstate>PAGESIZE</nextstate>
         <filterfunc>return $isProblemOrMap;</filterfunc>
         <choicefunc>return $isProblem;</choicefunc>
         <valuefunc>return $symb;</valuefunc>
         </resource>
       </state>
   
     <state name="CHOOSE_STUDENTS" title="Choose Students whose assignments you want to print">
       <student multichoice='1' variable="STUDENTS" nextstate="PAGESIZE" />
       <message><br /><big><i><b>Select resources for the assignment</b></i></big><br /></message>
       <resource variable="RESOURCES" multichoice="1">
         <filterfunc>return $isProblem</filterfunc>
         <mapurl>$map</mapurl>
         <valuefunc>return $symb</valuefunc>
         </resource>
       <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 (add a pagefeed after each assignment)</choice>
         <choice computer='1'>Add one empty page after each student\'s assignment</choice>
         <choice computer='2'>Add two empty pages after each student\'s assignment</choice>
         </choices>
       </state>
   CHOOSE_STUDENTS
       }
   
       # FIXME: That RE should come from a library somewhere.
       if (((&Apache::lonnet::allowed('bre',$subdir) eq 'F') and ($helper->{VARS}->{'postdata'}=~/\.(problem|exam|quiz|assess|survey|form|library|page|xml|html|htm|xhtml|xhtm)/)) or defined $helper->{'VARS'}->{'construction'}) {    
           push @{$printChoices}, ["Problems from current subdirectory <b>$subdir</b>", 'problems_from_directory', 'CHOOSE_FROM_SUBDIR'];
           
           my $f = '$filename';
           my $xmlfrag = <<CHOOSE_FROM_SUBDIR;
     <state name="CHOOSE_FROM_SUBDIR" title="Select File(s) from <b><small>$subdir</small></b> to print">
       <message>(mark them then click "next" button) <br /></message>
       <files variable="FILES" multichoice='1'>
         <nextstate>PAGESIZE</nextstate>
         <filechoice>return '$subdir';</filechoice>
   CHOOSE_FROM_SUBDIR
           
           $xmlfrag .= <<'CHOOSE_FROM_SUBDIR';
         <filefilter>return $filename =~ 
              m/^[^\.]+\.(problem|exam|quiz|assess|survey|form|library)$/;
         </filefilter>
         </files>
       </state>
   CHOOSE_FROM_SUBDIR
           &Apache::lonxml::xmlparse($r, 'helper', $xmlfrag);
       }
   
       # Generate the first state, to select which resources get printed.
       Apache::lonhelper::state->new("START", "What do you want to print? Make a choice.");
       $paramHash = Apache::lonhelper::getParamHash();
       $paramHash->{MESSAGE_TEXT} = "";
       Apache::lonhelper::message->new();
       $paramHash = Apache::lonhelper::getParamHash();
       $paramHash->{'variable'} = 'PRINT_TYPE';
       $helper->declareVar('PRINT_TYPE');
       $paramHash->{CHOICES} = $printChoices;
       Apache::lonhelper::choices->new();
   
       if (($ENV{'request.role.adv'} and &Apache::lonnet::allowed('vgr',$ENV{'request.course.id'})) or 
    ($helper->{VARS}->{'construction'} eq '1')) {
           $paramHash = Apache::lonhelper::getParamHash();
           $paramHash->{MESSAGE_TEXT} = "<br /><big><b><i>Next option is available only for advanced users:</i></b></big><br />";
           Apache::lonhelper::message->new();
           $paramHash = Apache::lonhelper::getParamHash();
    $paramHash->{'variable'} = 'ANSWER_TYPE';   
    $helper->declareVar('ANSWER_TYPE');         
           $paramHash->{CHOICES} = [
                                      ['Print without answer', 'yes'],
                                      ['Print with answers', 'no'] ];
           Apache::lonhelper::choices->new();
       }
   
       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());
   
       Apache::lonhelper::unregisterHelperTags();
   
       untie %hash;
   
     return OK;      return OK;
   }
   
 }   
   
 1;  1;
 __END__  
   
   package Apache::lonprintout::page_format_state;
   
   =pod
   
   =head1 Helper element: page_format_state
   
   See lonhelper.pm documentation for discussion of the helper framework.
   
   Apache::lonprintout::page_format_state is an element that gives the 
   user an opportunity to select the page layout they wish to print 
   with: Number of columns, portrait/landscape, and paper size. If you 
   want to change the paper size choices, change the @paperSize array 
   contents in this package.
   
   page_format_state is always directly invoked in lonprintout.pm, so there
   is no tag interface. You actually pass parameters to the constructor.
   
   =over 4
   
   =item * B<new>(varName): varName is where the print information will be stored in the format FIXME.
   
   =back
   
   =cut
   
   use Apache::lonhelper;
   
   no strict;
   @ISA = ("Apache::lonhelper::element");
   use strict;
   
   my $maxColumns = 2;
   my @paperSize = ("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]" );
   
   # Tentative format: Orientation (L = Landscape, P = portrait) | Colnum |
   #                   Paper type
   
   sub new { 
       my $self = Apache::lonhelper::element->new();
   
       shift;
   
       $self->{'variable'} = shift;
       my $helper = Apache::lonhelper::getHelper();
       $helper->declareVar($self->{'variable'});
       bless($self);
       return $self;
   }
   
   sub render {
       my $self = shift;
       my $helper = Apache::lonhelper::getHelper();
       my $result = '';
       my $var = $self->{'variable'};
   
       $result .= <<STATEHTML;
   
   <p><big><i><b>What page format do you prefer?</b></i></big></p>
   <table cellpadding="3">
     <tr>
       <td align="center"><b>Page layout</b></td>
       <td align="center"><b>Number of columns</b></td>
       <td align="center"><b>Paper type</b></td>
     </tr>
     <tr>
       <td>
         <input type="radio" name="${var}.layout" value="L" /> Landscape<br />
         <input type="radio" name="${var}.layout" value="P" checked='1'  /> Portrait
       </td>
       <td align="center">
         <select name="${var}.cols">
   STATEHTML
   
       my $i;
       for ($i = 1; $i <= $maxColumns; $i++) {
           if ($i == 2) {
               $result .= "<option value='$i' selected>$i</option>\n";
           } else {
               $result .= "<option value='$i'>$i</option>\n";
           }
       }
   
       $result .= "</select></td><td>\n";
       $result .= "<select name='${var}.paper'>\n";
   
       $i = 0;
       foreach (@paperSize) {
           if ($i == 0) {
               $result .= "<option selected value='$i'>" . $paperSize[$i] . "</option>\n";
           } else {
               $result .= "<option value='$i'>" . $paperSize[$i] . "</option>\n";
           }
           $i++;
       }
   
       $result .= "</select></td></tr></table>";
       return $result;
   }
   
   sub postprocess {
       my $self = shift;
   
       my $var = $self->{'variable'};
       my $helper = Apache::lonhelper->getHelper();
       $helper->{VARS}->{$var} = 
           $ENV{"form.$var.layout"} . '|' . $ENV{"form.$var.cols"} . '|' .
           $ENV{"form.$var.paper"};
       return 1;
   }
   
   1;
   
   package Apache::lonprintout::page_size_state;
   
   =pod
   
   =head1 Helper element: page_size_state
   
   See lonhelper.pm documentation for discussion of the helper framework.
   
   Apache::lonprintout::page_size_state is an element that gives the 
   user the opportunity to further refine the page settings if they
   select a single-column page.
   
   page_size_state is always directly invoked in lonprintout.pm, so there
   is no tag interface. You actually pass parameters to the constructor.
   
   =over 4
   
   =item * B<new>(varName): varName is where the print information will be stored in the format FIXME.
   
   =back
   
   =cut
   
   use Apache::lonhelper;
   
   no strict;
   @ISA = ("Apache::lonhelper::element");
   use strict;
   
   
   
   sub new { 
       my $self = Apache::lonhelper::element->new();
   
       shift; # disturbs me (probably prevents subclassing) but works (drops
              # package descriptor)... - Jeremy
   
       $self->{'variable'} = shift;
       my $helper = Apache::lonhelper::getHelper();
       $helper->declareVar($self->{'variable'});
   
       # The variable name of the format element, so we can look into 
       # $helper->{VARS} to figure out whether the columns are one or two
       $self->{'formatvar'} = shift;
   
       # The state to transition to after selection, or after discovering
       # the cols are not set to 1
       $self->{NEXTSTATE} = shift;
       bless($self);
       return $self;
   }
   
   sub render {
       my $self = shift;
       my $helper = Apache::lonhelper::getHelper();
       my $result = '';
       my $var = $self->{'variable'};
   
       if (defined $self->{ERROR_MSG}) {
           $result .= '<br /><font color="#FF0000">' . $self->{ERROR_MSG} . '</font><br />';
       }
   
       $result .= <<ELEMENTHTML;
   
   <p>How should the column be formatted?</p>
   
   <table cellpadding='3'>
     <tr>
       <td align='right'><b>Width</b>:</td>
       <td align='left'><input type='text' name='$var.width' value='18' size='4'></td>
       <td align='left'>
         <select name='$var.widthunit'>
           <option>cm</option><option>in</option>
         </select>
       </td>
     </tr>
     <tr>
       <td align='right'><b>Height</b>:</td>
       <td align='left'><input type='text' name="$var.height" value="25.9" size='4'></td>
       <td align='left'>
         <select name='$var.heightunit'>
           <option>cm</option><option>in</option>
         </select>
       </td>
     </tr>
     <tr>
       <td align='right'><b>Left margin</b>:</td>
       <td align='left'><input type='text' name='$var.lmargin' value='-1.5' size='4'></td>
       <td align='left'>
         <select name='$var.lmarginunit'>
           <option>cm</option><option>in</option>
         </select>
       </td>
     </tr>
   </table>
   
   <p>Hint: Some instructors like to leave scratch space for the student by
   making the width much smaller then the width of the page.</p>
   
   ELEMENTHTML
   
       return $result;
   }
   
   # If the user didn't select 1 column, skip this state.
   sub preprocess {
       my $self = shift;
       my $helper = Apache::lonhelper::getHelper();
   
       my $format = $helper->{VARS}->{$self->{'formatvar'}};
       if (substr($format, 2, 1) ne '1') {
           $helper->changeState($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";
       }
   
       if (!$error) {
           Apache::lonhelper::getHelper()->changeState($self->{NEXTSTATE});
           return 1;
       } else {
           $self->{ERROR_MSG} = $error;
           return 0;
       }
   }
   
   
   
   __END__
   
 #### Test block  
 #    my $ere;  
 #    foreach $ere (%ENV) {  
 # $result .= ' SS '.$ere.' => '.$ENV{$ere}.' FF '."\n\n";  
 #    }  
 ####  
Removed from v.1.23  
changed lines
  Added in v.1.193

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