File:  [LON-CAPA] / loncom / interface / lonprintout.pm
Revision 1.366: download - view: text, annotated - select for diffs
Wed Feb 23 11:51:40 2005 UTC (19 years, 2 months ago) by foxr
Branches: MAIN
CVS tags: HEAD
Added some context to help the saved pagebreaks not get reset too
spuriously.   The context is the type of print selected.  I think
this will work in most but not all cases.  Context is complicated
by the interaction between the helper and the printout that is managing
the context.  The helper knows which resources are available to be printed,
that's the best context to use to know when to reload the saved pagebreaks,
however, that information is presented in the same page of the helper in
which we want to select the page breaks.  The only other alternative
is to select page breaks on a separate page of the helper...

#  The LearningOnline Network
# Printout
#
# $Id: lonprintout.pm,v 1.366 2005/02/23 11:51:40 foxr Exp $
#
# Copyright Michigan State University Board of Trustees
#
# This file is part of the LearningOnline Network with CAPA (LON-CAPA).
#
# LON-CAPA is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# LON-CAPA is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with LON-CAPA; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
#
# /home/httpd/html/adm/gpl.txt
#
# http://www.lon-capa.org/
#
#
package Apache::lonprintout;

use strict;
use Apache::Constants qw(:common :http);
use Apache::lonxml;
use Apache::lonnet;
use Apache::loncommon;
use Apache::inputtags;
use Apache::grades;
use Apache::edit;
use Apache::File();
use Apache::lonnavmaps;
use Apache::lonratedt;
use POSIX qw(strftime);
use Apache::lonlocal;

#   Compare two students by name.  The students are in the form
#   returned by the helper:
#      user:domain:section:last,   first:status
#   This is a helper function for the perl sort built-in  therefore:
# Implicit Inputs:
#    $a     - The first element to compare (global)
#    $b     - The second element to compare (global)
# Returns:
#   -1   - $a < $b
#    0   - $a == $b
#   +1   - $a > $b
#   Note that the initial comparison is done on the last names with the
#   first names only used to break the tie.
#
#
sub compare_names {
    #  First split the names up into the primary fields.

    my ($u1, $d1, $s1, $n1, $stat1) = split(/:/, $a);
    my ($u2, $d2, $s2, $n2, $stat2) = split(/:/, $b);

    # Now split the last name and first name of each n:
    #

    my ($l1,$f1) = split(/,/, $n1);
    my ($l2,$f2) = split(/,/, $n2);

    # We don't bother to remove the leading/trailing whitespace from the
    # firstname, unless the last names compare identical.

    if($l1 lt $l2) {
	return -1;
    }
    if($l1 gt $l2) {
	return  1;
    }

    # Break the tie on the first name, but there are leading (possibly trailing
    # whitespaces to get rid of first 
    #
    $f1 =~ s/^\s+//;		# Remove leading...
    $f1 =~ s/\s+$//;		# Trailing spaces from first 1...
    
    $f2 =~ s/^\s+//;
    $f2 =~ s/\s+$//;		# And the same for first 2...

    if($f1 lt $f2) {
	return -1;
    }
    if($f1 gt $f2) {
	return 1;
    }
    
    #  Must be the same name.

    return 0;
}

sub latex_header_footer_remove {
    my $text = shift;
    $text =~ s/\\end{document}//;
    $text =~ s/\\documentclass([^&]*)\\begin{document}//;
    return $text;
}


sub character_chart {
    my $result = shift;	
    $result =~ s/&\#0?0?(7|9);//g;
    $result =~ s/&\#0?(10|13);//g;
    $result =~ s/&\#0?32;/ /g;
    $result =~ s/&\#0?33;/!/g;
    $result =~ s/&(\#0?34|quot);/\"/g;
    $result =~ s/&\#0?35;/\\\#/g;
    $result =~ s/&\#0?36;/\\\$/g;
    $result =~ s/&\#0?37;/\\%/g; 
    $result =~ s/&(\#0?38|amp);/\\&/g; 
    $result =~ s/&\#(0?39|146);/\'/g;
    $result =~ s/&\#0?40;/(/g;
    $result =~ s/&\#0?41;/)/g;
    $result =~ s/&\#0?42;/\*/g;
    $result =~ s/&\#0?43;/\+/g;
    $result =~ s/&\#(0?44|130);/,/g;
    $result =~ s/&\#0?45;/-/g;
    $result =~ s/&\#0?46;/\./g;
    $result =~ s/&\#0?47;/\//g;
    $result =~ s/&\#0?48;/0/g;
    $result =~ s/&\#0?49;/1/g;
    $result =~ s/&\#0?50;/2/g;
    $result =~ s/&\#0?51;/3/g;
    $result =~ s/&\#0?52;/4/g;
    $result =~ s/&\#0?53;/5/g;
    $result =~ s/&\#0?54;/6/g;
    $result =~ s/&\#0?55;/7/g;
    $result =~ s/&\#0?56;/8/g;
    $result =~ s/&\#0?57;/9/g;
    $result =~ s/&\#0?58;/:/g;
    $result =~ s/&\#0?59;/;/g;
    $result =~ s/&(\#0?60|lt|\#139);/\$<\$/g;
    $result =~ s/&\#0?61;/\\ensuremath\{=\}/g;
    $result =~ s/&(\#0?62|gt|\#155);/\\ensuremath\{>\}/g;
    $result =~ s/&\#0?63;/\?/g;
    $result =~ s/&\#0?65;/A/g;
    $result =~ s/&\#0?66;/B/g;
    $result =~ s/&\#0?67;/C/g;
    $result =~ s/&\#0?68;/D/g;
    $result =~ s/&\#0?69;/E/g;
    $result =~ s/&\#0?70;/F/g;
    $result =~ s/&\#0?71;/G/g;
    $result =~ s/&\#0?72;/H/g;
    $result =~ s/&\#0?73;/I/g;
    $result =~ s/&\#0?74;/J/g;
    $result =~ s/&\#0?75;/K/g;
    $result =~ s/&\#0?76;/L/g;
    $result =~ s/&\#0?77;/M/g;
    $result =~ s/&\#0?78;/N/g;
    $result =~ s/&\#0?79;/O/g;
    $result =~ s/&\#0?80;/P/g;
    $result =~ s/&\#0?81;/Q/g;
    $result =~ s/&\#0?82;/R/g;
    $result =~ s/&\#0?83;/S/g;
    $result =~ s/&\#0?84;/T/g;
    $result =~ s/&\#0?85;/U/g;
    $result =~ s/&\#0?86;/V/g;
    $result =~ s/&\#0?87;/W/g;
    $result =~ s/&\#0?88;/X/g;
    $result =~ s/&\#0?89;/Y/g;
    $result =~ s/&\#0?90;/Z/g;
    $result =~ s/&\#0?91;/[/g;
    $result =~ s/&\#0?92;/\\ensuremath\{\\setminus\}/g;
    $result =~ s/&\#0?93;/]/g;
    $result =~ s/&\#(0?94|136);/\\ensuremath\{\\wedge\}/g;
    $result =~ s/&\#(0?95|138|154);/\\underline{\\makebox[2mm]{\\strut}}/g;
    $result =~ s/&\#(0?96|145);/\`/g;
    $result =~ s/&\#0?97;/a/g;
    $result =~ s/&\#0?98;/b/g;
    $result =~ s/&\#0?99;/c/g;
    $result =~ s/&\#100;/d/g;
    $result =~ s/&\#101;/e/g;
    $result =~ s/&\#102;/f/g;
    $result =~ s/&\#103;/g/g;
    $result =~ s/&\#104;/h/g;
    $result =~ s/&\#105;/i/g;
    $result =~ s/&\#106;/j/g;
    $result =~ s/&\#107;/k/g;
    $result =~ s/&\#108;/l/g;
    $result =~ s/&\#109;/m/g;
    $result =~ s/&\#110;/n/g;
    $result =~ s/&\#111;/o/g;
    $result =~ s/&\#112;/p/g;
    $result =~ s/&\#113;/q/g;
    $result =~ s/&\#114;/r/g;
    $result =~ s/&\#115;/s/g;
    $result =~ s/&\#116;/t/g;
    $result =~ s/&\#117;/u/g;
    $result =~ s/&\#118;/v/g;
    $result =~ s/&\#119;/w/g;
    $result =~ s/&\#120;/x/g;
    $result =~ s/&\#121;/y/g;
    $result =~ s/&\#122;/z/g;
    $result =~ s/&\#123;/\\{/g;
    $result =~ s/&\#124;/\|/g;
    $result =~ s/&\#125;/\\}/g;
    $result =~ s/&\#126;/\~/g;
    $result =~ s/&\#131;/\\textflorin /g;
    $result =~ s/&\#132;/\"/g;
    $result =~ s/&\#133;/\\ensuremath\{\\ldots\}/g;
    $result =~ s/&\#134;/\\ensuremath\{\\dagger\}/g;
    $result =~ s/&\#135;/\\ensuremath\{\\ddagger\}/g;
    $result =~ s/&\#137;/\\textperthousand /g;
    $result =~ s/&\#140;/{\\OE}/g;
    $result =~ s/&\#147;/\`\`/g;
    $result =~ s/&\#148;/\'\'/g;
    $result =~ s/&\#149;/\\ensuremath\{\\bullet\}/g;
    $result =~ s/&\#150;/--/g;
    $result =~ s/&\#151;/---/g;
    $result =~ s/&\#152;/\\ensuremath\{\\sim\}/g;
    $result =~ s/&\#153;/\\texttrademark /g;
    $result =~ s/&\#156;/\\oe/g;
    $result =~ s/&\#159;/\\\"Y/g;
    $result =~ s/&(\#160|nbsp);/~/g;
    $result =~ s/&(\#161|iexcl);/!\`/g;
    $result =~ s/&(\#162|cent);/\\textcent /g;
    $result =~ s/&(\#163|pound);/\\pounds /g; 
    $result =~ s/&(\#164|curren);/\\textcurrency /g;
    $result =~ s/&(\#165|yen);/\\textyen /g;
    $result =~ s/&(\#166|brvbar);/\\textbrokenbar /g;
    $result =~ s/&(\#167|sect);/\\textsection /g;
    $result =~ s/&(\#168|uml);/\\texthighdieresis /g;
    $result =~ s/&(\#169|copy);/\\copyright /g;
    $result =~ s/&(\#170|ordf);/\\textordfeminine /g;
    $result =~ s/&(\#172|not);/\\ensuremath\{\\neg\}/g;
    $result =~ s/&(\#173|shy);/ - /g;
    $result =~ s/&(\#174|reg);/\\textregistered /g;
    $result =~ s/&(\#175|macr);/\\ensuremath\{^{-}\}/g;
    $result =~ s/&(\#176|deg);/\\ensuremath\{^{\\circ}\}/g;
    $result =~ s/&(\#177|plusmn);/\\ensuremath\{\\pm\}/g;
    $result =~ s/&(\#178|sup2);/\\ensuremath\{^2\}/g;
    $result =~ s/&(\#179|sup3);/\\ensuremath\{^3\}/g;
    $result =~ s/&(\#180|acute);/\\textacute /g;
    $result =~ s/&(\#181|micro);/\\ensuremath\{\\mu\}/g;
    $result =~ s/&(\#182|para);/\\P/g;
    $result =~ s/&(\#183|middot);/\\ensuremath\{\\cdot\}/g;
    $result =~ s/&(\#184|cedil);/\\c{\\strut}/g;
    $result =~ s/&(\#185|sup1);/\\ensuremath\{^1\}/g;
    $result =~ s/&(\#186|ordm);/\\textordmasculine /g;
    $result =~ s/&(\#188|frac14);/\\textonequarter /g;
    $result =~ s/&(\#189|frac12);/\\textonehalf /g;
    $result =~ s/&(\#190|frac34);/\\textthreequarters /g;
    $result =~ s/&(\#191|iquest);/?\`/g;   
    $result =~ s/&(\#192|Agrave);/\\\`{A}/g;  
    $result =~ s/&(\#193|Aacute);/\\\'{A}/g; 
    $result =~ s/&(\#194|Acirc);/\\^{A}/g;
    $result =~ s/&(\#195|Atilde);/\\~{A}/g;
    $result =~ s/&(\#196|Auml);/\\\"{A}/g; 
    $result =~ s/&(\#197|Aring);/{\\AA}/g;
    $result =~ s/&(\#198|AElig);/{\\AE}/g;
    $result =~ s/&(\#199|Ccedil);/\\c{c}/g;
    $result =~ s/&(\#200|Egrave);/\\\`{E}/g;  
    $result =~ s/&(\#201|Eacute);/\\\'{E}/g;    
    $result =~ s/&(\#202|Ecirc);/\\^{E}/g;
    $result =~ s/&(\#203|Euml);/\\\"{E}/g;
    $result =~ s/&(\#204|Igrave);/\\\`{I}/g;
    $result =~ s/&(\#205|Iacute);/\\\'{I}/g;    
    $result =~ s/&(\#206|Icirc);/\\^{I}/g;
    $result =~ s/&(\#207|Iuml);/\\\"{I}/g;    
    $result =~ s/&(\#209|Ntilde);/\\~{N}/g;
    $result =~ s/&(\#210|Ograve);/\\\`{O}/g;
    $result =~ s/&(\#211|Oacute);/\\\'{O}/g;
    $result =~ s/&(\#212|Ocirc);/\\^{O}/g;
    $result =~ s/&(\#213|Otilde);/\\~{O}/g;
    $result =~ s/&(\#214|Ouml);/\\\"{O}/g;    
    $result =~ s/&(\#215|times);/\\ensuremath\{\\times\}/g;
    $result =~ s/&(\#216|Oslash);/{\\O}/g;
    $result =~ s/&(\#217|Ugrave);/\\\`{U}/g;    
    $result =~ s/&(\#218|Uacute);/\\\'{U}/g;
    $result =~ s/&(\#219|Ucirc);/\\^{U}/g;
    $result =~ s/&(\#220|Uuml);/\\\"{U}/g;
    $result =~ s/&(\#221|Yacute);/\\\'{Y}/g;
    $result =~ s/&(\#223|szlig);/{\\ss}/g;
    $result =~ s/&(\#224|agrave);/\\\`{a}/g;
    $result =~ s/&(\#225|aacute);/\\\'{a}/g;
    $result =~ s/&(\#226|acirc);/\\^{a}/g;
    $result =~ s/&(\#227|atilde);/\\~{a}/g;
    $result =~ s/&(\#228|auml);/\\\"{a}/g;
    $result =~ s/&(\#229|aring);/{\\aa}/g;
    $result =~ s/&(\#230|aelig);/{\\ae}/g;
    $result =~ s/&(\#231|ccedil);/\\c{c}/g;
    $result =~ s/&(\#232|egrave);/\\\`{e}/g;
    $result =~ s/&(\#233|eacute);/\\\'{e}/g;
    $result =~ s/&(\#234|ecirc);/\\^{e}/g;
    $result =~ s/&(\#235|euml);/\\\"{e}/g;
    $result =~ s/&(\#236|igrave);/\\\`{i}/g;
    $result =~ s/&(\#237|iacute);/\\\'{i}/g;
    $result =~ s/&(\#238|icirc);/\\^{i}/g;
    $result =~ s/&(\#239|iuml);/\\\"{i}/g;
    $result =~ s/&(\#240|eth);/\\ensuremath\{\\partial\}/g;
    $result =~ s/&(\#241|ntilde);/\\~{n}/g;
    $result =~ s/&(\#242|ograve);/\\\`{o}/g;
    $result =~ s/&(\#243|oacute);/\\\'{o}/g;
    $result =~ s/&(\#244|ocirc);/\\^{o}/g;
    $result =~ s/&(\#245|otilde);/\\~{o}/g;
    $result =~ s/&(\#246|ouml);/\\\"{o}/g;
    $result =~ s/&(\#247|divide);/\\ensuremath\{\\div\}/g;
    $result =~ s/&(\#248|oslash);/{\\o}/g;
    $result =~ s/&(\#249|ugrave);/\\\`{u}/g; 
    $result =~ s/&(\#250|uacute);/\\\'{u}/g;
    $result =~ s/&(\#251|ucirc);/\\^{u}/g;
    $result =~ s/&(\#252|uuml);/\\\"{u}/g;
    $result =~ s/&(\#253|yacute);/\\\'{y}/g;
    $result =~ s/&(\#255|yuml);/\\\"{y}/g;
    $result =~ s/&\#952;/\\ensuremath\{\\theta\}/g;
#Greek Alphabet
    $result =~ s/&(alpha|\#945);/\\ensuremath\{\\alpha\}/g;
    $result =~ s/&(beta|\#946);/\\ensuremath\{\\beta\}/g;
    $result =~ s/&(gamma|\#947);/\\ensuremath\{\\gamma\}/g;
    $result =~ s/&(delta|\#948);/\\ensuremath\{\\delta\}/g;
    $result =~ s/&(epsilon|\#949);/\\ensuremath\{\\epsilon\}/g;
    $result =~ s/&(zeta|\#950);/\\ensuremath\{\\zeta\}/g;
    $result =~ s/&(eta|\#951);/\\ensuremath\{\\eta\}/g;
    $result =~ s/&(theta|\#952);/\\ensuremath\{\\theta\}/g;
    $result =~ s/&(iota|\#953);/\\ensuremath\{\\iota\}/g;
    $result =~ s/&(kappa|\#954);/\\ensuremath\{\\kappa\}/g;
    $result =~ s/&(lambda|\#955);/\\ensuremath\{\\lambda\}/g;
    $result =~ s/&(mu|\#956);/\\ensuremath\{\\mu\}/g;
    $result =~ s/&(nu|\#957);/\\ensuremath\{\\nu\}/g;
    $result =~ s/&(xi|\#958);/\\ensuremath\{\\xi\}/g;
    $result =~ s/&(omicron|\#959);/o/g;
    $result =~ s/&(pi|\#960);/\\ensuremath\{\\pi\}/g;
    $result =~ s/&(rho|\#961);/\\ensuremath\{\\rho\}/g;
    $result =~ s/&(sigma|\#963);/\\ensuremath\{\\sigma\}/g;
    $result =~ s/&(tau|\#964);/\\ensuremath\{\\tau\}/g;
    $result =~ s/&(upsilon|\#965);/\\ensuremath\{\\upsilon\}/g;
    $result =~ s/&(phi|\#966);/\\ensuremath\{\\phi\}/g;
    $result =~ s/&(chi|\#967);/\\ensuremath\{\\chi\}/g;
    $result =~ s/&(psi|\#968);/\\ensuremath\{\\psi\}/g;
    $result =~ s/&(omega|\#969);/\\ensuremath\{\\omega\}/g;
    $result =~ s/&(thetasym|\#977);/\\ensuremath\{\\vartheta\}/g;
    $result =~ s/&(piv|\#982);/\\ensuremath\{\\varpi\}/g;
    $result =~ s/&(Alpha|\#913);/A/g;
    $result =~ s/&(Beta|\#914);/B/g;
    $result =~ s/&(Gamma|\#915);/\\ensuremath\{\\Gamma\}/g;
    $result =~ s/&(Delta|\#916);/\\ensuremath\{\\Delta\}/g;
    $result =~ s/&(Epsilon|\#917);/E/g;
    $result =~ s/&(Zeta|\#918);/Z/g;
    $result =~ s/&(Eta|\#919);/H/g;
    $result =~ s/&(Theta|\#920);/\\ensuremath\{\\Theta\}/g;
    $result =~ s/&(Iota|\#921);/I/g;
    $result =~ s/&(Kappa|\#922);/K/g;
    $result =~ s/&(Lambda|\#923);/\\ensuremath\{\\Lambda\}/g;
    $result =~ s/&(Mu|\#924);/M/g;
    $result =~ s/&(Nu|\#925);/N/g;
    $result =~ s/&(Xi|\#926);/\\ensuremath\{\\Xi\}/g;
    $result =~ s/&(Omicron|\#927);/O/g;
    $result =~ s/&(Pi|\#928);/\\ensuremath\{\\Pi\}/g;
    $result =~ s/&(Rho|\#929);/P/g;
    $result =~ s/&(Sigma|\#931);/\\ensuremath\{\\Sigma\}/g;
    $result =~ s/&(Tau|\#932);/T/g;
    $result =~ s/&(Upsilon|\#933);/\\ensuremath\{\\Upsilon\}/g;
    $result =~ s/&(Phi|\#934);/\\ensuremath\{\\Phi\}/g;
    $result =~ s/&(Chi|\#935);/X/g;
    $result =~ s/&(Psi|\#936);/\\ensuremath\{\\Psi\}/g;
    $result =~ s/&(Omega|\#937);/\\ensuremath\{\\Omega\}/g;
#Arrows (extended HTML 4.01)
    $result =~ s/&(larr|\#8592);/\\ensuremath\{\\leftarrow\}/g;
    $result =~ s/&(uarr|\#8593);/\\ensuremath\{\\uparrow\}/g;
    $result =~ s/&(rarr|\#8594);/\\ensuremath\{\\rightarrow\}/g;
    $result =~ s/&(darr|\#8595);/\\ensuremath\{\\downarrow\}/g;
    $result =~ s/&(harr|\#8596);/\\ensuremath\{\\leftrightarrow\}/g;
    $result =~ s/&(lArr|\#8656);/\\ensuremath\{\\Leftarrow\}/g;
    $result =~ s/&(uArr|\#8657);/\\ensuremath\{\\Uparrow\}/g;
    $result =~ s/&(rArr|\#8658);/\\ensuremath\{\\Rightarrow\}/g;
    $result =~ s/&(dArr|\#8659);/\\ensuremath\{\\Downarrow\}/g;
    $result =~ s/&(hArr|\#8660);/\\ensuremath\{\\Leftrightarrow\}/g;
#Mathematical Operators (extended HTML 4.01)
    $result =~ s/&(forall|\#8704);/\\ensuremath\{\\forall\}/g;
    $result =~ s/&(part|\#8706);/\\ensuremath\{\\partial\}/g;
    $result =~ s/&(exist|\#8707);/\\ensuremath\{\\exists\}/g;
    $result =~ s/&(empty|\#8709);/\\ensuremath\{\\emptyset\}/g;
    $result =~ s/&(nabla|\#8711);/\\ensuremath\{\\nabla\}/g;
    $result =~ s/&(isin|\#8712);/\\ensuremath\{\\in\}/g;
    $result =~ s/&(notin|\#8713);/\\ensuremath\{\\notin\}/g;
    $result =~ s/&(ni|\#8715);/\\ensuremath\{\\ni\}/g;
    $result =~ s/&(prod|\#8719);/\\ensuremath\{\\prod\}/g;
    $result =~ s/&(sum|\#8721);/\\ensuremath\{\\sum\}/g;
    $result =~ s/&(minus|\#8722);/\\ensuremath\{-\}/g;
    $result =~ s/&(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;
    return $result;
}


                  #width, height, oddsidemargin, evensidemargin, topmargin
my %page_formats=
    ('letter' => {
	 'book' => {
	     '1' => [ '7.1 in','9.8 in', '-0.57 in','-0.57 in','0.7 cm'],
	     '2' => ['3.66 in','9.8 in', '-0.57 in','-0.57 in','0.7 cm']
	 },
	 'album' => {
	     '1' => [ '8.8 in', '6.8 in','-40 pt in',  '-60 pt','1 cm'],
	     '2' => [ '4.4 in', '6.8 in','-0.5 in', '-1.5 in','3.5 in']
	 },
     },
     'legal' => {
	 'book' => {
	     '1' => ['7.1 in','13 in',,'-0.57 in','-0.57 in','-0.5 in'],
	     '2' => ['3.16 in','13 in','-0.57 in','-0.57 in','-0.5 in']
	 },
	 'album' => {
	     '1' => [],
	     '2' => []
          },
     },
     'tabloid' => {
	 'book' => {
	     '1' => ['9.8 in','16 in','-0.57 in','-0.57 in','-0.5 in'],
	     '2' => ['4.9 in','16 in','-0.57 in','-0.57 in','-0.5 in']
	 },
	 'album' => {
	     '1' => [],
	     '2' => []
          },
     },
     'executive' => {
	 'book' => {
	     '1' => ['6.8 in','9 in','-0.57 in','-0.57 in','1.2 in'],
	     '2' => ['3.1 in','9 in','-0.57 in','-0.57 in','1.2 in']
	 },
	 'album' => {
	     '1' => [],
	     '2' => []
          },
     },
     'a2' => {
	 'book' => {
	     '1' => [],
	     '2' => []
	 },
	 'album' => {
	     '1' => [],
	     '2' => []
          },
     },
     'a3' => {
	 'book' => {
	     '1' => [],
	     '2' => []
	 },
	 'album' => {
	     '1' => [],
	     '2' => []
          },
     },
     'a4' => {
	 'book' => {
	     '1' => ['176 mm','272 mm','-40 pt in','-60 pt','-0.5 in'],
	     '2' => [ '91 mm','272 mm','-40 pt in','-60 pt','-0.5 in']
	 },
	 'album' => {
	     '1' => ['8.5 in','7.7 in','-40 pt in','-60 pt','0 in'],
	     '2' => ['3.9 in','7.7 in','-40 pt in','-60 pt','0 in']
	 },
     },
     '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'})) {
	$courseidinfo = &Apache::lonxml::latex_special_symbols(&Apache::lonnet::unescape($ENV{'course.'.$ENV{'request.course.id'}.'.description'}),'header');
    }
    return $courseidinfo;
}

sub page_format_transformation {
    my ($papersize,$layout,$numberofcolumns,$choice,$text,$assignment,$tableofcontents,$indexlist,$selectionmade) = @_; 
    my ($textwidth,$textheight,$oddoffset,$evenoffset,$topmargin);
    if ($selectionmade eq '4') {
	$assignment='Problems from the Whole Course';
    } else {
	$assignment=&Apache::lonxml::latex_special_symbols($assignment,'header');
    }
    ($textwidth,$textheight,$oddoffset,$evenoffset,$topmargin) = &page_format($papersize,$layout,$numberofcolumns,$topmargin);
    my $name = &get_name();
    my $courseidinfo = &get_course();
    if (defined($courseidinfo)) { $courseidinfo=' - '.$courseidinfo }
    my $topmargintoinsert = '';
    if ($topmargin ne '0') {$topmargintoinsert='\setlength{\topmargin}{'.$topmargin.'}';}
    my $fancypagestatement='';
    if ($numberofcolumns eq '2') {
	$fancypagestatement="\\fancyhead{}\\fancyhead[LO]{\\textbf{$name} $courseidinfo \\hfill \\thepage \\\\ \\textit{$assignment}}";
    } else {
	$fancypagestatement="\\rhead{}\\chead{}\\lhead{\\textbf{$name} $courseidinfo \\hfill \\thepage \\\\ \\textit{$assignment}}";
    }
    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}$fancypagestatement\\begin{document}\\voffset=-0\.8 cm\\setcounter{page}{1}\n /;
    } elsif ($layout eq 'book') {
	if ($choice ne 'All class print') { 
	    $text =~ s/\\begin{document}/\\textheight $textheight\\oddsidemargin = $evenoffset\\evensidemargin = $evenoffset $topmargintoinsert\n\\textwidth= $textwidth\\newlength{\\minipagewidth}\\setlength{\\minipagewidth}{\\textwidth\/\$number_of_columns-0\.2cm}\n\\renewcommand{\\ref}{\\keephidden\}\\usepackage{fancyhdr}\\addtolength{\\headheight}{\\baselineskip}\\pagestyle{fancy}$fancypagestatement\\begin{document}\n\\voffset=-0\.8 cm\\setcounter{page}{1}\n/;
	} else {
	    $text =~ s/\\pagestyle{fancy}\\rhead{}\\chead{}\s*\\begin{document}/\\textheight = $textheight\\oddsidemargin = $evenoffset\n\\evensidemargin = $evenoffset $topmargintoinsert\\textwidth= $textwidth\\newlength{\\minipagewidth}\n\\setlength{\\minipagewidth}{\\textwidth\/\$number_of_columns-0\.2cm}\\renewcommand{\\ref}{\\keephidden\}\\pagestyle{fancy}\\rhead{}\\chead{}\\begin{document}\\voffset=-0\.8cm\n\\setcounter{page}{1}  \\vskip 5 mm\n /;
	}
	if ($papersize eq 'a4') {
	    $text =~ s/(\\begin{document})/$1\\special{papersize=210mm,297mm}/;
	}
    }
    if ($tableofcontents eq 'yes') {$text=~s/(\\setcounter\{page\}\{1\})/$1 \\tableofcontents\\newpage /;}
    if ($indexlist eq 'yes') {
	$text=~s/(\\begin{document})/\\makeindex $1/;
	$text=~s/(\\end{document})/\\strut\\\\\\strut\\printindex $1/;
    }
    return $text;
}


sub page_cleanup {
    my $result = shift;	
 
    $result =~ m/\\end{document}(\d*)$/;
    my $number_of_columns = $1;
    my $insert = '{';
    for (my $id=1;$id<=$number_of_columns;$id++) { $insert .='l'; }
    $insert .= '}';
    $result =~ s/(\\begin{longtable})INSERTTHEHEADOFLONGTABLE\\endfirsthead\\endhead/$1$insert/g;
    $result =~ s/&\s*REMOVETHEHEADOFLONGTABLE\\\\/\\\\/g;
    return $result,$number_of_columns;
}


sub details_for_menu {
    my ($helper)=@_;
    my $postdata=$ENV{'form.postdata'};
    if (!$postdata) { $postdata=$helper->{VARS}{'postdata'}; }
    my $name_of_resource = &Apache::lonnet::gettitle($postdata);
    my $symbolic = &Apache::lonnet::symbread($postdata);
    my ($map,$id,$resource)=&Apache::lonnet::decode_symb($symbolic);
    $map=&Apache::lonnet::clutter($map);
    my $name_of_sequence = &Apache::lonnet::gettitle($map);
    if ($name_of_sequence =~ /^\s*$/) {
	$map =~ m|([^/]+)$|;
	$name_of_sequence = $1;
    }
    my $name_of_map = &Apache::lonnet::gettitle($ENV{'request.course.uri'});
    if ($name_of_map =~ /^\s*$/) {
	$ENV{'request.course.uri'} =~ m|([^/]+)$|;
	$name_of_map = $1;
    }
    return ($name_of_resource,$name_of_sequence,$name_of_map);
}


sub latex_corrections {

    my ($number_of_columns,$result,$selectionmade) = @_;

#    $result =~ s/\\includegraphics{/\\includegraphics\[width=\\minipagewidth\]{/g;
    $result =~ s/\$number_of_columns/$number_of_columns/g;
    if ($selectionmade ne '1') {
	$result =~ s/(\\end{document})/\\strut\\vspace\*{-4 mm}\\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/;
    } else {
	$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;
    #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 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;
    my $output='\documentclass[letterpaper]{article}';
    if (($mode eq 'batchmode') || (!$ENV{'request.role.adv'})) {
	$output.='\batchmode';
    }
    $output.='\newcommand{\keephidden}[1]{}\renewcommand{\deg}{$^{\circ}$}'."\n".
	     '\usepackage{longtable}\usepackage{textcomp}\usepackage{makeidx}'."\n".
	     '\usepackage[dvips]{graphicx}\usepackage{epsfig}'."\n".
	     '\usepackage{picins}\usepackage{calc}'."\n".
	     '\newenvironment{choicelist}{\begin{list}{}{\setlength{\rightmargin}{0in}'."\n".
	     '\setlength{\leftmargin}{0.13in}\setlength{\topsep}{0.05in}'."\n".
	     '\setlength{\itemsep}{0.022in}\setlength{\parsep}{0in}'."\n".
	     '\setlength{\belowdisplayskip}{0.04in}\setlength{\abovedisplayskip}{0.05in}'."\n".
	     '\setlength{\abovedisplayshortskip}{-0.04in}'."\n".
	     '\setlength{\belowdisplayshortskip}{0.04in}}}{\end{list}}'."\n".
	     '\renewenvironment{theindex}{\begin{list}{}{{\vskip 1mm \noindent \large'."\n".
	     '\textbf{Index}} \newline \setlength{\rightmargin}{0in}'."\n".
	     '\setlength{\leftmargin}{0.13in}\setlength{\topsep}{0.01in}'."\n".
	     '\setlength{\itemsep}{0.1in}\setlength{\parsep}{-0.02in}'."\n".
	     '\setlength{\belowdisplayskip}{0.01in}\setlength{\abovedisplayskip}{0.01in}'."\n".
	     '\setlength{\abovedisplayshortskip}{-0.04in}'."\n".
	     '\setlength{\belowdisplayshortskip}{0.01in}}}{\end{list}}\begin{document}'."\n";
    return $output;	     
}

sub path_to_problem {
    my ($urlp,$colwidth)=@_;
    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 $element (@elements) {
	    if ($curlength+(length($element)*2) > $colwidth) {
		$newurlp .=  '|\vskip -1 mm \noindent \verb|';
		$curlength=0;
	    } 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)=@_;
    if ($mode ne '') {$mode='\\'.$mode}
    my $result.= &print_latex_header($mode);
    if ($currentURL=~/\/ext\//) {
	$result.=' \strut \\\\ THIS IS EXTERNAL RESOURCE WITH URL \strut \\\\ '.$currentURL.' ';
    } else {
	$result.=$currentURL;
    }
    $result.= '\vskip 0.5mm\noindent\makebox[\textwidth/$number_of_columns][b]{\hrulefill} \end{document}';
    return $result;
}


#
#   Retrieve the hash of page breaks.
#
#  Inputs:
#    helper   - reference to helper object.
#  Outputs
#    A reference to a page break hash.
#
#

sub get_page_breaks  {
    my ($helper) = @_;
    my %page_breaks;
    
    foreach my $break (split /\|\|\|/, $helper->{'VARS'}->{'FINISHPAGE'}) {
	$page_breaks{$break} = 1;
    }
    
    return %page_breaks;
}

sub output_data {
    my ($r,$helper,$rparmhash) = @_;
    my %parmhash = %$rparmhash;
    my $html=&Apache::lonxml::xmlbegin();
    my $bodytag=&Apache::loncommon::bodytag('Preparing Printout');
    $r->print(<<ENDPART);
$html
<head>
<script type="text/javascript" language="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>
<title>LON-CAPA output for printing</title>
</head>
$bodytag
Please stand by while processing your print request, this may take some time ...
ENDPART


    # 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,$papersize)=@temporary_array;
    if ($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);
    
    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=~/\.(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'}->{'style_file'}=~/\w/) {
		    $moreenv{'construct.style'}=$helper->{'VARS'}->{'style_file'};
		    my $dom = $ENV{'user.domain'};
		    my $user = $ENV{'user.name'};
		    my $put_result = &Apache::lonnet::put('environment',{'construct.style'=>$helper->{'VARS'}->{'style_file'}},$dom,$user);
		}
                if ($helper->{'VARS'}->{'probstatus'} eq 'exam') {$form{'problemtype'}='exam';}
		$form{'problem_split'}=$parmhash{'problem_stream_switch'};
		$form{'suppress_tries'}=$parmhash{'suppress_tries'};
		$form{'latex_type'}=$helper->{'VARS'}->{'LATEX_TYPE'};
		$form{'print_discussions'}=$helper->{'VARS'}->{'PRINT_DISCUSSIONS'};
		if ($helper->{'VARS'}->{'PRINT_DISCUSSIONS'} eq 'yes') {$form{'problem_split'}='yes';}
		if ($helper->{'VARS'}->{'curseed'}) {
		    $rndseed=$helper->{'VARS'}->{'curseed'};
		}
		$form{'rndseed'}=$rndseed;
		&Apache::lonnet::appenv(%moreenv);
		&Apache::lonnet::delenv('form.counter');
		&Apache::lonxml::init_counter();
		$texversion.=&Apache::lonnet::ssi($currentURL,%form);
		&Apache::lonnet::delenv('form.counter');
		&Apache::lonnet::delenv('request.filename');
	    }
	    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;
		my $answer=&Apache::lonnet::ssi($currentURL,%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') {
			$texversion.='\vskip 0 mm \noindent\textbf{'.&Apache::lonnet::gettitle($helper->{'VARS'}->{'symb'}).'}\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}';
		}
	    }
	    if ($helper->{'VARS'}->{'TABLE_INDEX'} eq 'yes') {
		$texversion=&IndexCreation($texversion,$currentURL);
	    }
	    if ($helper->{'VARS'}->{'CONSTR_RESOURSE_URL'} eq 'yes') {
		$texversion=~s/(\\addcontentsline\{toc\}\{subsection\}\{[^\}]*\})/$1 URL: \\verb|$currentURL| \\strut\\\\\\strut /;

	    }
	    $result .= $texversion;
	    if ($currentURL=~m/\.page\s*$/) {
		($result,$number_of_columns) = &page_cleanup($result);
	    }
        } elsif ($currentURL=~/\.sequence$/ && $helper->{'VARS'}->{'construction'} eq '1') {
            #printing content of sequence from the construction space	
	    my $flag_latex_header_remove = 'NO'; 
	    my $rndseed=time;
	    if ($helper->{'VARS'}->{'curseed'}) {
		$rndseed=$helper->{'VARS'}->{'curseed'};
	    }
	    $currentURL=~s|\/~([^\/]+)\/|\/home\/$1\/public_html\/|;
	    my $errtext=&Apache::lonratedt::mapread($currentURL);
	    for (my $member=0;$member<=$#Apache::lonratedt::order;$member++) {
		$Apache::lonratedt::resources[$Apache::lonratedt::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;
			$texversion=&Apache::lonnet::ssi($urlp,%form);
		    }
		    if((($helper->{'VARS'}->{'ANSWER_TYPE'} eq 'no') ||
		       ($helper->{'VARS'}->{'ANSWER_TYPE'} eq 'only')) && 
		       ($urlp=~/\.(problem|exam|quiz|assess|survey|form|library|page)$/)) {
			$form{'grade_target'}='answer';
			$form{'answer_output_mode'}='tex';
			$form{'rndseed'}=$rndseed;
			$form{'problem_split'}=$parmhash{'problem_stream_switch'};
                        if ($urlp=~/\/res\//) {$ENV{'request.state'}='published';}
			my $answer=&Apache::lonnet::ssi($urlp,%form);
			if ($helper->{'VARS'}->{'ANSWER_TYPE'} eq 'no') {
			    $texversion=~s/(\\keephidden{ENDOFPROBLEM})/$answer$1/;
			} else {
			    $texversion=&print_latex_header($helper->{'VARS'}->{'LATEX_TYPE'});
			    $texversion.='\vskip 0 mm \noindent\textbf{'.&Apache::lonnet::gettitle($helper->{'VARS'}->{'symb'}).'}\vskip 0 mm ';
			    $texversion.=&path_to_problem ($currentURL,$LaTeXwidth);
			    $texversion.='\vskip 1 mm '.$answer.'\end{document}';
			}
		    }
		    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_URpL'} eq 'yes') {
			$texversion=~s/(\\addcontentsline\{toc\}\{subsection\}\{[^\}]*\})/$1 URL: \\verb|$urlp| \\strut\\\\\\strut /;
		    }
		    $result.=$texversion;
		    $flag_latex_header_remove = 'YES';
		} elsif ($urlp=~/\.(sequence|page)$/) {
		    $result.='\strut\newline\noindent Sequence/page '.$urlp.'\strut\newline\noindent\makebox[\textwidth/$number_of_columns][b]{\hrulefill}\newline\noindent ';
		}  
	    }
	    if ($helper->{VARS}->{'construction'} eq '1') {$result=~s/(\\begin{document})/$1 \\fbox\{RANDOM SEED IS $rndseed\} /;}
	    $result .= '\end{document}';   
	} elsif ($cleanURL=~/\/(smppg|syllabus|aboutme|bulletinboard)$/) { 
		$form{'latex_type'}=$helper->{'VARS'}->{'LATEX_TYPE'};
		if ($currentURL=~/\/syllabus$/) {$currentURL=~s/\/res//;}
		my $texversion=&Apache::lonnet::ssi($currentURL,%form);
		$result .= $texversion;
	} else {
	    $result.=&unsupported($currentURL,$helper->{'VARS'}->{'LATEX_TYPE'});
	}
    } elsif (($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'};
	if ($helper->{'VARS'}->{'PRINT_DISCUSSIONS'} eq 'yes') {$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::lonnet::delenv('form.counter');
	&Apache::lonxml::init_counter();
	for (my $i=0;$i<=$#master_seq;$i++) {

	    # 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) {
		    $result.="\\newpage\n";
		}
	    }
	    my (undef,undef,$urlp)=&Apache::lonnet::decode_symb($master_seq[$i]);
	    $urlp=&Apache::lonnet::clutter($urlp);
	    $form{'symb'}=$master_seq[$i];
	    my ($sequence)=&Apache::lonnet::decode_symb($master_seq[$i]);
	    my $assignment=&Apache::lonxml::latex_special_symbols(&Apache::lonnet::gettitle($sequence),'header'); #tittle of the assignment which contains this problem
	    if ($selectionmade==7) {$helper->{VARS}->{'assignment'}=$assignment;}
	    if ($i==0) {$prevassignment=$assignment;}
	    my $texversion='';
	    if ($urlp=~/\.(problem|exam|quiz|assess|survey|form|library|page|xml|html|htm|xhtml|xhtm)$/) {
		$texversion.=&Apache::lonnet::ssi($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';
		} 
		my $lonidsdir=$r->dir_config('lonIDsDir');
		my $envfile=$ENV{'user.environment'};
		$envfile=~/\/([^\/]+)\.id$/;
		$envfile=$1;
		&Apache::lonnet::transfer_profile_to_env($lonidsdir,$envfile);
		my $current_counter=$ENV{'form.counter'};
		if(($helper->{'VARS'}->{'ANSWER_TYPE'} eq 'no') ||
		   ($helper->{'VARS'}->{'ANSWER_TYPE'} eq 'only')) {
		    $form{'grade_target'}='answer';
		    $form{'answer_output_mode'}='tex';
		    my $answer=&Apache::lonnet::ssi($urlp,%form);
		    &Apache::lonnet::appenv(('form.counter' => $current_counter));
		    if ($helper->{'VARS'}->{'ANSWER_TYPE'} eq 'no') {
			$texversion=~s/(\\keephidden{ENDOFPROBLEM})/$answer$1/;
		    } else {
			if ($urlp=~/\.(problem|exam|quiz|assess|survey|form|library)$/) {
			    $texversion=&print_latex_header($helper->{'VARS'}->{'LATEX_TYPE'});
			    $texversion.='\vskip 0 mm \noindent\textbf{'.&Apache::lonnet::gettitle($urlp).'}\vskip 0 mm ';
			    $texversion.=&path_to_problem ($urlp,$LaTeXwidth);
			    $texversion.='\vskip 1 mm '.$answer;
			} else {
			    $texversion='';
			}
		    }
		}
		if ($flag_latex_header_remove ne 'NO') {
		    $texversion = &latex_header_footer_remove($texversion);
		} else {
		    $texversion =~ s/\\end{document}//;
		}
		if ($helper->{'VARS'}->{'TABLE_INDEX'} eq 'yes') {
		    $texversion=&IndexCreation($texversion,$urlp);
		}
		if (($selectionmade == 4) and ($assignment ne $prevassignment)) {
		    my $name = &get_name();
		    my $courseidinfo = &get_course();
		    if (defined($courseidinfo)) { $courseidinfo=' - '.$courseidinfo }
		    $prevassignment=$assignment;
		    $result .='\newpage \noindent\parbox{\minipagewidth}{\noindent\\lhead{\\textit{\\textbf{'.$name.'}}'.$courseidinfo.' \\hfill \\thepage \\\\ \\textit{'.$assignment.'}}} \vskip 5 mm ';
		}
		$result .= $texversion;
		$flag_latex_header_remove = 'YES';   
	    } elsif ($urlp=~/\/(smppg|syllabus|aboutme|bulletinboard)$/) { 
		$form{'latex_type'}=$helper->{'VARS'}->{'LATEX_TYPE'};
		if ($urlp=~/\/syllabus$/) {$urlp=~s/\/res//;}
		my $texversion=&Apache::lonnet::ssi($urlp,%form);
		if ($flag_latex_header_remove ne 'NO') {
		    $texversion = &latex_header_footer_remove($texversion);
		} else {
		    $texversion =~ s/\\end{document}/\\vskip 0\.5mm\\noindent\\makebox\[\\textwidth\/\$number_of_columns\]\[b\]\{\\hrulefill\}/;
		}
		$result .= $texversion;
		$flag_latex_header_remove = 'YES'; 
	    } else {
		$texversion=&unsupported($urlp,$helper->{'VARS'}->{'LATEX_TYPE'});
		if ($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::lonnet::delenv('form.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 'resources_for_students')){


     #-- prints assignments for whole class or for selected students  
	 my $type;
	 if ($helper->{'VARS'}->{'PRINT_TYPE'} eq 'problems_for_students') {
	     $selectionmade=5;
	     $type='problems';
	 } elsif ($helper->{'VARS'}->{'PRINT_TYPE'} eq 'resources_for_students') {
	     $selectionmade=8;
	     $type='resources';
	 }
	 my @students=split /\|\|\|/, $helper->{'VARS'}->{'STUDENTS'};
	 #   The normal sort order is by section then by students within the
	 #   section. If the helper var student_sort is 1, then the user has elected
	 #   to override this and output the students by name.
	 #    Each element of the students array is of the form:
	 #       username:domain:section:last, first:status
	 #    
	 #   
	 if ($helper->{'VARS'}->{'student_sort'}    eq 1) {
	     @students = sort compare_names  @students;
	 }
         if ($helper->{'VARS'}->{'NUMBER_TO_PRINT'} eq '0' ||
	     $helper->{'VARS'}->{'NUMBER_TO_PRINT'} eq 'all' ) {
	     $helper->{'VARS'}->{'NUMBER_TO_PRINT'}=$#students+1;
	 }
	 my @master_seq=split /\|\|\|/, $helper->{'VARS'}->{'RESOURCES'};

	 #loop over students
	 my $flag_latex_header_remove = 'NO'; 
	 my %moreenv;
         $moreenv{'instructor_comments'}='hide';
	 $moreenv{'textwidth'}=&get_textwidth($helper,$LaTeXwidth);
	 $moreenv{'print_discussions'}=$helper->{'VARS'}->{'PRINT_DISCUSSIONS'};
	 $moreenv{'problem_split'}    = $parmhash{'problem_stream_switch'};
	 if ($helper->{'VARS'}->{'PRINT_DISCUSSIONS'} eq 'yes') {$moreenv{'problem_split'}='yes';}
	 my %prog_state=&Apache::lonhtmlcommon::Create_PrgWin($r,'Print Status','Class Print Status',$#students+1,'inline','75');
	 my $student_counter=-1;
	 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++;
	     my $i=int($student_counter/$helper->{'VARS'}{'NUMBER_TO_PRINT'});
	     my ($output,$fullname)=&print_resources($r,$helper,
						     $person,$type,
						     \%moreenv,\@master_seq,
						     $flag_latex_header_remove,
						     $LaTeXwidth);
	     $print_array[$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 %moreenv = ('textwidth' => &get_textwidth($helper,$LaTeXwidth));
	 $moreenv{'problem_split'}    = $parmhash{'problem_stream_switch'};
	 my $seed=time+($$<<16)+($$);
	 my @allcodes;
	 if ($old_name) {
	     my %result=&Apache::lonnet::get('CODEs',[$old_name],$cdom,$cnum);
	     @allcodes=split(',',$result{$old_name});
	     $num_todo=scalar(@allcodes);
	 } else {
	     my %allcodes;
	     srand($seed);
	     for (my $i=0;$i<$num_todo;$i++) {
		 $moreenv{'CODE'}=&get_CODE(\%allcodes,$i,$seed,'6');
	     }
	     if ($code_name) {
		 &Apache::lonnet::put('CODEs',
				      {$code_name =>join(',',keys(%allcodes))},
				      $cdom,$cnum);
	     }
	     @allcodes=keys(%allcodes);
	 }
	 my @master_seq=split /\|\|\|/, $helper->{'VARS'}->{'RESOURCES'};
	 my ($type) = split(/_/,$helper->{'VARS'}->{'PRINT_TYPE'});
	 my $number_per_page=$helper->{'VARS'}->{'NUMBER_TO_PRINT'};
	 if ($number_per_page eq '0' || $number_per_page eq 'all') {
	     $number_per_page=$num_todo;
	 }
	 my $flag_latex_header_remove = 'NO'; 
	 my %prog_state=&Apache::lonhtmlcommon::Create_PrgWin($r,'Print Status','Class Print Status',$num_todo,'inline','75');
	 my $count=0;
	 foreach my $code (sort(@allcodes)) {
	     my $file_num=int($count/$number_per_page);
	     $moreenv{'CODE'}=&num_to_letters($code);
	     my ($output,$fullname)=
		 &print_resources($r,$helper,'anonymous',$type,\%moreenv,
				  \@master_seq,$flag_latex_header_remove,
				  $LaTeXwidth);
	     $print_array[$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++) {
	    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'}||;
		}
		my $texversion=&Apache::lonnet::ssi($urlp,%form);
		if(($helper->{'VARS'}->{'ANSWER_TYPE'} eq 'no') ||
		   ($helper->{'VARS'}->{'ANSWER_TYPE'} eq 'only')) {
		    $form{'grade_target'}='answer';
		    $form{'answer_output_mode'}='tex';
		    $form{'latex_type'}=$helper->{'VARS'}->{'LATEX_TYPE'};
		    $form{'rndseed'}=$rndseed;
		    my $answer=&Apache::lonnet::ssi($urlp,%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') {
			    $texversion.='\vskip 0 mm \noindent ';
			    $texversion.=&path_to_problem ($urlp,$LaTeXwidth);
			} else {
			    $texversion.='\vskip 0 mm \noindent\textbf{Prints from construction space - there is no title.}\vskip 0 mm ';
			    my $URLpath=$urlp;
			    $URLpath=~s/~([^\/]+)/public_html\/$1\/$1/;
			    $texversion.=&path_to_problem ($URLpath,$LaTeXwidth);
			}
			$texversion.='\vskip 1 mm '.$answer.'\end{document}';
		    }
		}
                #this chunck is responsible for printing the path to problem
		my $newurlp=$urlp;
		if ($newurlp=~/~/) {$newurlp=~s|\/~([^\/]+)\/|\/home\/$1\/public_html\/|;}
		$newurlp=&path_to_problem($newurlp,$LaTeXwidth);
		$texversion =~ s/(\\begin{minipage}{\\textwidth})/$1 $newurlp/;
		if ($flag_latex_header_remove ne 'NO') {
		    $texversion = &latex_header_footer_remove($texversion);
		} else {
		    $texversion =~ s/\\end{document}//;
		}
		if ($helper->{'VARS'}->{'TABLE_INDEX'} eq 'yes') {
		    $texversion=&IndexCreation($texversion,$urlp);
		}
		if ($helper->{'VARS'}->{'CONSTR_RESOURSE_URL'} eq 'yes') {
		    $texversion=~s/(\\addcontentsline\{toc\}\{subsection\}\{[^\}]*\})/$1 URL: \\verb|$urlp| \\strut\\\\\\strut /;
		    
		}
		$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
    $result = &page_format_transformation($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);
    for (my $i=1;$i<=$#print_array;$i++) {$print_array[$i] = &latex_corrections($number_of_columns,$print_array[$i],$selectionmade);}
    #changes page's parameters for the one column output 
    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'} /;
    }
#-- 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 {
		my $anobegin=index($print_array[$i],'\setcounter{page}',0);
		substr($print_array[$i],0,$anobegin)='';
		$print_array[$i]=$inc.$print_array[$i].'\end{document}';
	    }
	    my $temp_file;
	    my $newfilename=$filename;
	    my $num=$i+1;
	    $newfilename =~s/\.tex$/_$num\.tex/; 
	    unless ($temp_file = Apache::File->new('>'.$newfilename)) {
		$r->log_error("Couldn't open $newfilename for output $!");
		return SERVER_ERROR; 
	    }
	    print $temp_file $print_array[$i];
	}
    }
    my $student_names='';
    if ($#print_array>0) {
	for (my $i=0;$i<=$#print_array;$i++) {
	    $student_names.=$student_names[$i].'_ENDPERSON_';
	}
    } else {
	if ($#student_names>-1) {
	    $student_names=$student_names[0].'_ENDPERSON_';
	} else {
	    my $fullname = &get_name($ENV{'user.name'},$ENV{'user.domain'});
	    $student_names=join(':',$ENV{'user.name'},$ENV{'user.domain'},
				$ENV{'request.course.sec'},$fullname).
				    '_ENDPERSON_'.'_END_';
	}
    }

    my $URLback=''; #link to original document
    if ($helper->{'VARS'}->{'construction'} ne '1') {
	#prints published resource
	$URLback=&Apache::lonnet::escape('/adm/flip?postdata=return:');
    } else {
	#prints resource from the construction space
	$URLback='/'.$helper->{'VARS'}->{'filename'};
	if ($URLback=~/([^?]+)/) {
	    $URLback=$1;
	    $URLback=~s|^/~|/priv/|;
	}
    }

    &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' => $ENV{'request.role.adv'},
                            'cgi.'.$identifier.'numberoffiles' => $#print_array,
                            'cgi.'.$identifier.'studentnames' => $student_names,
                            'cgi.'.$identifier.'backref' => $URLback,);
 
$r->print(<<FINALEND);
<br />
<meta http-equiv="Refresh" content="0; url=/cgi-bin/printout.pl?$identifier" />
<a href="/cgi-bin/printout.pl?$identifier">Continue</a>
</body>
</html>
FINALEND
}

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;
}

sub get_CODE {
    my ($all_codes,$num,$seed,$size)=@_;
    my $max='1'.'0'x$size;
    my $newcode;
    while(1) {
	$newcode=sprintf("%06d",int(rand($max)));
	if (!exists($$all_codes{$newcode})) {
	    $$all_codes{$newcode}=1;
	    return &num_to_letters($newcode);
	}
    }
}

sub print_resources {
    my ($r,$helper,$person,$type,$moreenv,$master_seq,$remove_latex_header,
	$LaTeXwidth)=@_;
    my $current_output = ''; 
    my ($username,$userdomain,$usersection) = split /:/,$person;
    my $fullname = &get_name($username,$userdomain);
    my $namepostfix;
    if ($person =~ 'anon') {
	$namepostfix="\\\\Name: ";
	$fullname = "CODE - ".$moreenv->{'CODE'};
    }
    my $i           = 0;
    #goes through all resources, checks if they are available for 
    #current student, and produces output   
    &Apache::lonnet::delenv('form.counter');
    &Apache::lonxml::init_counter();

    my %page_breaks  = &get_page_breaks($helper);

    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=~/\.(problem|exam|quiz|assess|survey|form|library|page|xml|html|htm|xhtml|xhtm)$/) {
		    my $rendered = &Apache::loncommon::get_student_view($curresline,$username,$userdomain,$ENV{'request.course.id'},'tex',$moreenv);
		    my $lonidsdir=$r->dir_config('lonIDsDir');
		    my $envfile=$ENV{'user.environment'};
		    $envfile=~/\/([^\/]+)\.id$/;
		    $envfile=$1;
		    &Apache::lonnet::transfer_profile_to_env($lonidsdir,$envfile);
		    my $current_counter=$ENV{'form.counter'};
		    if(($helper->{'VARS'}->{'ANSWER_TYPE'} eq 'no') ||
		       ($helper->{'VARS'}->{'ANSWER_TYPE'} eq 'only')) {
			$moreenv->{'answer_output_mode'}='tex';
			$moreenv->{'latex_type'}=$helper->{'VARS'}->{'LATEX_TYPE'};
			my $ansrendered = &Apache::loncommon::get_student_answers($curresline,$username,$userdomain,$ENV{'request.course.id'},%{$moreenv});
			&Apache::lonnet::appenv(('form.counter' => $current_counter));
			if ($helper->{'VARS'}->{'ANSWER_TYPE'} eq 'no') {
			    $rendered=~s/(\\keephidden{ENDOFPROBLEM})/$ansrendered$1/;
			} else {
			    $rendered=&print_latex_header($helper->{'VARS'}->{'LATEX_TYPE'});
			    $rendered.='\vskip 0 mm \noindent\textbf{'.&Apache::lonnet::gettitle($curresline).'}\vskip 0 mm ';
			    $rendered.=&path_to_problem ($curresline,$LaTeXwidth);
			    $rendered.='\vskip 1 mm '.$ansrendered;
			}
		    }
		    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)$/) {
		    my $rendered = &Apache::loncommon::get_student_view($curresline,$username,$userdomain,$ENV{'request.course.id'},'tex',$moreenv);
		    my $lonidsdir=$r->dir_config('lonIDsDir');
		    my $envfile=$ENV{'user.environment'};
		    $envfile=~/\/([^\/]+)\.id$/;
		    $envfile=$1;
		    &Apache::lonnet::transfer_profile_to_env($lonidsdir,$envfile);
		    my $current_counter=$ENV{'form.counter'};
		    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,$helper->{'VARS'}->{'LATEX_TYPE'});
		    if ($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 $courseidinfo = &get_course();
    if (defined($courseidinfo)) { $courseidinfo=' - '.$courseidinfo }
    if ($usersection ne '') {$courseidinfo.=' - Sec. '.$usersection}
    my $currentassignment=&Apache::lonxml::latex_special_symbols($helper->{VARS}->{'assignment'},'header');
    if ($current_output=~/\\documentclass/) {
	$current_output =~ s/\\begin{document}/\\setlength{\\topmargin}{1cm} \\begin{document}\\noindent\\parbox{\\minipagewidth}{\\noindent\\lhead{\\textit{\\textbf{$fullname}}$courseidinfo \\hfill \\thepage \\\\ \\textit{$currentassignment}$namepostfix}}\\vskip 5 mm /;
    } else {
	my $blankpages = '';
	for (my $j=0;$j<$helper->{'VARS'}->{'EMPTY_PAGES'};$j++) {$blankpages.='\clearpage\strut\clearpage';}
	$current_output = '\strut\vspace*{-6 mm}\\newline\\noindent\\makebox[\\textwidth/$number_of_columns][b]{\\hrulefill}\vspace*{-2 mm}\\newline\\noindent{\\tiny Printed from LON-CAPA\\copyright MSU{\\hfill} Licensed under GNU General Public License }\\newpage '.$blankpages.'\setcounter{page}{1}\noindent\parbox{\minipagewidth}{\noindent\\lhead{\\textit{\\textbf{'.$fullname.'}}'.$courseidinfo.' \\hfill \\thepage \\\\ \\textit{'.$currentassignment.'}'.$namepostfix.'}} \vskip 5 mm '.$current_output;
    }
    return ($current_output,$fullname);

}

sub handler {

    my $r = shift;
    my $helper;

#    my $loaderror=&Apache::lonnet::overloaderror($r);
#    if ($loaderror) { return $loaderror; }
#    $loaderror=
#       &Apache::lonnet::overloaderror($r,
#         $ENV{'course.'.$ENV{'request.course.id'}.'.home'});
#    if ($loaderror) { return $loaderror; }

    my $result = printHelper($r);
    if (!ref($result)) {
	return $result;
    }
    $helper = $result;
   
#	my $key; 
#	foreach $key (keys %{$helper->{'VARS'}}) {
#	    $r->print(' '.$key.'->'.$helper->{'VARS'}->{$key}.'<-<br />');
#	}
#	foreach $key (keys %ENV) {
#	    $r->print(' '.$key.'->'.$ENV{$key}.'<-<br />');
#	}
#	return OK;

    my %parmhash=&Apache::lonnet::coursedescription($ENV{'request.course.id'});
 
#	my $key; 
#	foreach $key (keys %parmhash) {
#	    $r->print(' '.$key.'->'.$parmhash{$key}.'<-<br />');
#	}
#


			 
    &output_data($r,$helper,\%parmhash);
    return OK;
} 

use Apache::lonhelper;

sub addMessage {
    my $text = shift;
    my $paramHash = Apache::lonhelper::getParamHash();
    $paramHash->{MESSAGE_TEXT} = $text;
    Apache::lonhelper::message->new();
}

use Data::Dumper;

sub printHelper {
    my $r = shift;

    if ($r->header_only) {
        if ($ENV{'browser.mathml'}) {
            &Apache::loncommon::content_type($r,'text/xml');
        } else {
            &Apache::loncommon::content_type($r,'text/html');
        }
        $r->send_http_header;
        return OK;
    }

    # Send header, nocache
    if ($ENV{'browser.mathml'}) {
        &Apache::loncommon::content_type($r,'text/xml');
    } else {
        &Apache::loncommon::content_type($r,'text/html');
    }
    &Apache::loncommon::no_cache($r);
    $r->send_http_header;
    $r->rflush();

    # Unfortunately, this helper is so complicated we have to
    # write it by hand

    Apache::loncommon::get_unprocessed_cgi($ENV{QUERY_STRING});
    
    my $helper = Apache::lonhelper::helper->new("Printing Helper");
    $helper->declareVar('symb');
    $helper->declareVar('postdata');    
    $helper->declareVar('curseed'); 
    $helper->declareVar('probstatus');   
    $helper->declareVar('filename');
    $helper->declareVar('construction');
    $helper->declareVar('assignment');
    $helper->declareVar('style_file');
    $helper->declareVar('student_sort');
    $helper->declareVar('FINISHPAGE');
    $helper->declareVar('PRINT_TYPE');

    #  The page breaks can get loaded initially from the course environment:

    if((!defined($ENV{"form.CURRENT_STATE"}))  ||
       ($ENV{'form.CURRENT_STATE'} == "START")) {
	$helper->{VARS}->{FINISHPAGE} = ""; # In case they did a back e.g.
    }


    
    &Apache::loncommon::restore_course_settings('print',
						{'pagebreaks'  => 'scalar',
					         'lastprinttype' => 'scalar'});

    
    if("$helper->{VARS}->{PRINT_TYPE}" eq "$ENV{'form.lastprinttype'}") {
	$helper->{VARS}->{FINISHPAGE} = $ENV{'form.pagebreaks'};
    }
    
    
    # This will persistently load in the data we want from the
    # very first screen.
    # Detect whether we're coming from construction space
    if ($ENV{'form.postdata'}=~/^(?:http:\/\/[^\/]+\/|\/|)\~([^\/]+)\/(.*)$/) {
        $helper->{VARS}->{'filename'} = "~$1/$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'});
        }
    }

    if ($ENV{'form.symb'}) {
        $helper->{VARS}->{'symb'} = $ENV{'form.symb'};
    }
    if ($ENV{'form.url'}) {
        $helper->{VARS}->{'symb'} = &Apache::lonnet::symbread($helper->{VARS}->{'postdata'});

    }
    $helper->{VARS}->{'symb'}=
	&Apache::lonenc::check_encrypt($helper->{VARS}->{'symb'});
    my ($resourceTitle,$sequenceTitle,$mapTitle) = &details_for_menu($helper);
    if ($sequenceTitle ne '') {$helper->{VARS}->{'assignment'}=$sequenceTitle;}

    
    # Extract map
    my $symb = $helper->{VARS}->{'symb'};
    my ($map, $id, $url);
    my $subdir;

    # 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, $url) = &Apache::lonnet::decode_symb($symb);
        $helper->{VARS}->{'postdata'} = 
	    &Apache::lonenc::check_encrypt(&Apache::lonnet::clutter($url));

        if (!$resourceTitle) { # if the resource doesn't have a title, use the filename
            my $postdata = $helper->{VARS}->{'postdata'};
            $resourceTitle = substr($postdata, rindex($postdata, '/') + 1);
        }
        $subdir = &Apache::lonnet::filelocation("", $url);
    }
    if (!$helper->{VARS}->{'curseed'} && $ENV{'form.curseed'}) {
	$helper->{VARS}->{'curseed'}=$ENV{'form.curseed'};
    }
    if (!$helper->{VARS}->{'probstatus'} && $ENV{'form.problemtype'}) {
	$helper->{VARS}->{'probstatus'}=$ENV{'form.problemtype'};
    }

    my $userCanSeeHidden = Apache::lonnavmaps::advancedUser();
    my $userPriviledged = ($ENV{'request.role'}=~m/^cc\./ or
			   $ENV{'request.role'}=~m/^in\./ or
			   $ENV{'request.role'}=~m/^ta\./);

    Apache::lonhelper::registerHelperTags();

    # "Delete everything after the last slash."
    $subdir =~ s|/[^/]+$||;
    if (not $helper->{VARS}->{'construction'}) {
	$subdir=$Apache::lonnet::perlvar{'lonDocRoot'}.'/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><i>$resourceTitle</i></b> (".&mt('what you just saw on the screen').")", 'current_document', 'PAGESIZE'];
    }

    # Useful filter strings
    my $isProblem = '($res->is_problem()||$res->contains_problem) ';
    $isProblem .= ' && !$res->randomout()' if !$userCanSeeHidden;
    my $isProblemOrMap = '$res->is_problem() || $res->contains_problem() || $res->is_sequence()';
    my $isNotMap = '!$res->is_sequence()';
    $isNotMap .= ' && !$res->randomout()' if !$userCanSeeHidden;
    my $isMap = '$res->is_map()';
    my $symbFilter = '$res->shown_symb()';
    my $urlValue = '$res->link()';

    $helper->declareVar('SEQUENCE');

    # Useful for debugging: Dump the help vars
#    $r->print(Dumper($helper->{VARS}));
#    $r->print($map);

    # If we're in a sequence...
    if (($helper->{'VARS'}->{'construction'} ne '1') &&

	$helper->{VARS}->{'postdata'} &&
	$helper->{VARS}->{'assignment'}) {
        # Allow problems from sequence
        push @{$printChoices}, ["<b>".&mt('Problems')."</b> ".&mt('in')." <b><i>$sequenceTitle</i></b>", 'map_problems', 'CHOOSE_PROBLEMS'];
        # Allow all resources from sequence
        push @{$printChoices}, ["<b>".&mt('Resources')."</b> ".&mt('in')." <b><i>$sequenceTitle</i></b>", 'map_problems_pages', 'CHOOSE_PROBLEMS_HTML'];

        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' addstatus="1"
              closeallpages="1">
      <nextstate>PAGESIZE</nextstate>
      <filterfunc>return $isProblem;</filterfunc>
      <mapurl>$map</mapurl>
      <valuefunc>return $symbFilter;</valuefunc>
      <option text='Newpage' variable='FINISHPAGE' />
      </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' addstatus="1"
              closeallpages="1">
      <nextstate>PAGESIZE</nextstate>
      <filterfunc>return $isNotMap;</filterfunc>
      <mapurl>$map</mapurl>
      <valuefunc>return $symbFilter;</valuefunc>
      <option text='Newpage' variable='FINISHPAGE' />
      </resource>
    </state>
HELPERFRAGMENT

	&Apache::lonxml::xmlparse($r, 'helper', $helperFragment);
    }

    # If the user is privileged, allow them to print all 
    # problems and resources  in the entier course, optionally for selected students
    if ($userPriviledged && 
        ($helper->{VARS}->{'postdata'}=~/\/res\// || $helper->{VARS}->{'postdata'}=~/\/(syllabus|smppg|aboutme|bulletinboard)$/)) { 

        push @{$printChoices}, ['<b>Problems</b> from <b>entire course</b>', 'all_problems', 'ALL_PROBLEMS'];
	push @{$printChoices}, ['<b>Resources</b> from <b>entire course</b>', 'all_resources', 'ALL_RESOURCES'];
         &Apache::lonxml::xmlparse($r, 'helper', <<ALL_PROBLEMS);
  <state name="ALL_PROBLEMS" title="Select Problem(s) to print">
    <message>(mark them then click "next" button) <br /></message>
    <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>
      <option text='Newpage' variable='FINISHPAGE' />
    </resource>
  </state>
  <state name="ALL_RESOURCES" title="Select Resource(s) to print">
    <message>(Mark them then click "next" button) <br /> </message>
    <resource variable="RESOURCES" toponly='0' multichoice='1'
              suppressEmptySequences='0' addstatus='1' closeallpages='1'>
      <nextstate>PAGESIZE</nextstate>
      <filterfunc>return $isNotMap; </filterfunc>
      <valuefunc>return $symbFilter;</valuefunc>
      <option text='NewPage' variable='FINISHPAGE' />
    </resource>
  </state>
ALL_PROBLEMS

	if ($helper->{VARS}->{'assignment'}) {
	    push @{$printChoices}, ["<b>".&mt('Problems')."</b> ".&mt('from')." <b><i>$sequenceTitle</i></b> ".&mt('for')." <b>".&mt('selected students')."</b>", 'problems_for_students', 'CHOOSE_STUDENTS'];
	    push @{$printChoices}, ["<b>".&mt('Problems')."</b> ".&mt('from')." <b><i>$sequenceTitle</i></b> ".&mt('for')." <b>".&mt('anonymous students')."</b>", 'problems_for_anon', 'CHOOSE_ANON1'];
	}
	my $resource_selector=<<RESOURCE_SELECTOR;
   <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>
      <option text='New Page' variable='FINISHPAGE' />
      </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/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>
    <message><hr width='33%' /><b>Number of assignments printed at the same time: </b></message>
    <string variable="NUMBER_TO_PRINT" maxlength="5" size="5"><defaultvalue>"all"</defaultvalue></string>
RESOURCE_SELECTOR

        &Apache::lonxml::xmlparse($r, 'helper', <<CHOOSE_STUDENTS);
  <state name="CHOOSE_STUDENTS" title="Select Students and Resources">
      <student multichoice='1' variable="STUDENTS" nextstate="PAGESIZE" />
      <message><b>Select sort order</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>
    $resource_selector
  </state>
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; }
	    $namechoice.='<choice computer="'.$name.'">'.$name.'</choice>';
	}
        &Apache::lonxml::xmlparse($r, 'helper', <<CHOOSE_ANON1);
  <state name="CHOOSE_ANON1" title="Select Students and Resources">
    <nextstate>PAGESIZE</nextstate>
    <message><hr width='33%' /></message>
    <message><table><tr><td><b>Number of anonymous 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'}) {
	    return "You need to specify the number of assignments to print";
	}
	return undef;
       </validator>
    </string>
    <message></td></tr><tr><td></message>
    <message><b>Names to store the CODEs under for later:</b></message>
    <message></td><td></message>
    <string variable="ANON_CODE_STORAGE_NAME" maxlength="50" size="20" />
    <message></td></tr></table></message>
    <message><hr width='33%' /></message>
    <message><b>Reprint a set of saved CODEs:</b></message>
    <dropdown variable="REUSE_OLD_CODES">
        $namechoice
    </dropdown>
    <message><hr width='33%' /></message>
    $resource_selector
  </state>
CHOOSE_ANON1


	if ($helper->{VARS}->{'assignment'}) {
	    push @{$printChoices}, ["<b>".&mt('Resources')."</b> ".&mt('from')." <b><i>$sequenceTitle</i></b> ".&mt('for')." <b>".&mt('selected students')."</b>", 'resources_for_students', 'CHOOSE_STUDENTS1'];
	    push @{$printChoices}, ["<b>".&mt('Resources')."</b> ".&mt('from')." <b><i>$sequenceTitle</i></b> ".&mt('for')." <b>".&mt('anonymous students')."</b>", 'resources_for_anon', 'CHOOSE_ANON2'];
	}
	    

	$resource_selector=<<RESOURCE_SELECTOR;
    <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>
      <option text='Newpage' variable='FINISHPAGE' />
      </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/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>
    <message><hr width='33%' /><b>Number of assignments printed at the same time: </b></message>
    <string variable="NUMBER_TO_PRINT" maxlength="5" size="5"><defaultvalue>"all"</defaultvalue></string>
RESOURCE_SELECTOR

	&Apache::lonxml::xmlparse($r, 'helper', <<CHOOSE_STUDENTS1);
  <state name="CHOOSE_STUDENTS1" title="Select Students and Resources">
    <student multichoice='1' variable="STUDENTS" nextstate="PAGESIZE" />
    <choices variable='student_sort'>
      <choice computer='0'>Sort by section then student</choice>
      <choice computer='1'>Sort by students across sections.</choice>
    </choices>

    $resource_selector
    </state>
CHOOSE_STUDENTS1

	&Apache::lonxml::xmlparse($r, 'helper', <<CHOOSE_ANON2);
  <state name="CHOOSE_ANON2" title="Select Students and Resources">
    <nextstate>PAGESIZE</nextstate>
    <message><table><tr><td><b>Number of anonymous 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'}) {
	    return "You need to specify the number of assignments to print";
	}
	return undef;
       </validator>
    </string>
    <message></td></tr><tr><td></message>
    <message><b>Names to store the CODEs under for later:</b></message>
    <message></td><td></message>
    <string variable="ANON_CODE_STORAGE_NAME" maxlength="50" size="20" />
    <message></td></tr></table></message>
    <message><hr width='33%' /></message>
    <message><b>Reprint a set of saved CODEs:</b></message>
    <dropdown variable="REUSE_OLD_CODES">
        $namechoice
    </dropdown>
    <message><hr width='33%' /></message>
    $resource_selector
  </state>
CHOOSE_ANON2
    }

    # 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'}) and $ENV{'request.role.adv'} and $subdir ne $Apache::lonnet::perlvar{'lonDocRoot'}.'/res/') {    
        push @{$printChoices}, ["<b>".&mt('Problems')."</b> ".&mt('from current subdirectory')." <b><i>$subdir</i></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
        
        # 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 (!$helper->{VARS}->{'construction'}) {
	push @$printChoices, ["<b>Resources</b> from <b>selected sequence</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>
      <option text='Newpage' variable='FINISHPAGE' />
      </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 $isProblem</filterfunc>
      <mapurl evaluate='1'>return '$escapedSequenceName';</mapurl>
      <valuefunc>return $symbFilter;</valuefunc>
      <option text='Newpage' variable='FINISHPAGE' />
      </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 (($ENV{'request.role.adv'} and &Apache::lonnet::allowed('vgr',$ENV{'request.course.id'})) or 
	($helper->{VARS}->{'construction'} eq '1')) {
	addMessage("<hr width='33%' /><table><tr><td align='right'>Print: </td><td>");
        $paramHash = Apache::lonhelper::getParamHash();
	$paramHash->{'variable'} = 'ANSWER_TYPE';   
	$helper->declareVar('ANSWER_TYPE');         
        $paramHash->{CHOICES} = [
                                   ['Without Answers', 'yes'],
                                   ['With Answers', 'no'],
                                   ['Only Answers', 'only'],
                                   ['As Exam Problem', 'exam']
                                ];
        Apache::lonhelper::dropdown->new();
	addMessage("</td></tr>");
	$startedTable = 1;
    }

    if ($ENV{'request.role.adv'}) {
	if (!$startedTable) {
	    addMessage("<hr width='33%' /><table><tr><td align='right'>LaTeX mode: </td><td>");
	    $startedTable = 1;
	} else {
	    addMessage("<tr><td align='right'>LaTeX mode: </td><td>");
	}
        $paramHash = Apache::lonhelper::getParamHash();
	$paramHash->{'variable'} = 'LATEX_TYPE';   
	$helper->declareVar('LATEX_TYPE');  
	if ($helper->{VARS}->{'construction'} eq '1') {       
	    $paramHash->{CHOICES} = [
				     ['standard LaTeX mode', 'standard'], 
				     ['LaTeX batchmode', 'batchmode'], ];
	} else {
	    $paramHash->{CHOICES} = [
				     ['LaTeX batchmode', 'batchmode'],
				     ['standard LaTeX mode', 'standard'] ];
	}
        Apache::lonhelper::dropdown->new();
 
	addMessage("</td></tr><tr><td align='right'>Print Table of Contents: </td><td>");
        $paramHash = Apache::lonhelper::getParamHash();
	$paramHash->{'variable'} = 'TABLE_CONTENTS';   
	$helper->declareVar('TABLE_CONTENTS');         
        $paramHash->{CHOICES} = [
                                   ['No', 'no'],
                                   ['Yes', 'yes'] ];
        Apache::lonhelper::dropdown->new();
	addMessage("</td></tr>");
        
	if (not $helper->{VARS}->{'construction'}) {
	    addMessage("<tr><td align='right'>Print Index: </td><td>");
	    $paramHash = Apache::lonhelper::getParamHash();
	    $paramHash->{'variable'} = 'TABLE_INDEX';   
	    $helper->declareVar('TABLE_INDEX');         
	    $paramHash->{CHOICES} = [
				     ['No', 'no'],
				     ['Yes', 'yes'] ];
	    Apache::lonhelper::dropdown->new();
	    addMessage("</td></tr>");
	    addMessage("<tr><td align='right'>Print Discussions: </td><td>");
	    $paramHash = Apache::lonhelper::getParamHash();
	    $paramHash->{'variable'} = 'PRINT_DISCUSSIONS';   
	    $helper->declareVar('PRINT_DISCUSSIONS');         
	    $paramHash->{CHOICES} = [
				     ['No', 'no'],
				     ['Yes', 'yes'] ];
	    Apache::lonhelper::dropdown->new();
	    addMessage("</td></tr>");
	}

	if ($helper->{'VARS'}->{'construction'}) { 
	    my $stylevalue=$ENV{'construct.style'};
	    my $xmlfrag .= <<"RNDSEED";
	    <message><tr><td align='right'>Use random seed:  </td><td></message>
	    <string variable="curseed" size="15" maxlength="15">
		<defaultvalue>
	            return $helper->{VARS}->{'curseed'};
	        </defaultvalue>
	    </string>
	     <message></td></tr><tr><td align="right">Use style file:</td><td></message>
             <message><input type="text" size="40" name="style_file_value" value="$stylevalue"  />&nbsp; <a href="javascript:openbrowser('helpform','style_file','sty')">Select style file</a> </td><td></message>
             <message></td></tr></message>
RNDSEED
            &Apache::lonxml::xmlparse($r, 'helper', $xmlfrag);
	    $helper->{'VARS'}->{'style_file'}=$ENV{'form.style_file_value'};
	}
    }




    if ($startedTable) {
	addMessage("</table>");
    }

    Apache::lonprintout::page_format_state->new("FORMAT");

    # Generate the PAGESIZE state which will offer the user the margin
    # choices if they select one column
    Apache::lonhelper::state->new("PAGESIZE", "Set Margins");
    Apache::lonprintout::page_size_state->new('pagesize', 'FORMAT', 'FINAL');


    $helper->process();

    # MANUAL BAILOUT CONDITION:
    # If we're in the "final" state, bailout and return to handler
    if ($helper->{STATE} eq 'FINAL') {
        return $helper;
    }    

    $r->print($helper->display());

    &Apache::lonhelper::unregisterHelperTags();

    return OK;
}


1;

package Apache::lonprintout::page_format_state;

=pod

=head1 Helper element: page_format_state

See lonhelper.pm documentation for discussion of the helper framework.

Apache::lonprintout::page_format_state is an element that gives the 
user an opportunity to select the page layout they wish to print 
with: Number of columns, portrait/landscape, and paper size. If you 
want to change the paper size choices, change the @paperSize array 
contents in this package.

page_format_state is always directly invoked in lonprintout.pm, so there
is no tag interface. You actually pass parameters to the constructor.

=over 4

=item * B<new>(varName): varName is where the print information will be stored in the format FIXME.

=back

=cut

use Apache::lonhelper;

no strict;
@ISA = ("Apache::lonhelper::element");
use strict;
use Apache::lonlocal;

my $maxColumns = 2;
my @paperSize = ("letter [8 1/2x11 in]", "legal [8 1/2x14 in]", 
                 "tabloid (ledger) [11x17 in]", "executive [7 1/2x10 in]",
                 "a2 [420x594 mm]", "a3 [297x420 mm]", "a4 [210x297 mm]", 
                 "a5 [148x210 mm]", "a6 [105x148 mm]" );

# Tentative format: Orientation (L = Landscape, P = portrait) | Colnum |
#                   Paper type

sub new { 
    my $self = Apache::lonhelper::element->new();

    shift;

    $self->{'variable'} = shift;
    my $helper = Apache::lonhelper::getHelper();
    $helper->declareVar($self->{'variable'});
    bless($self);
    return $self;
}

sub render {
    my $self = shift;
    my $helper = Apache::lonhelper::getHelper();
    my $result = '';
    my $var = $self->{'variable'};
    my $PageLayout=&mt('Page layout');
    my $NumberOfColumns=&mt('Number of columns');
    my $PaperType=&mt('Paper type');
    $result .= <<STATEHTML;

<hr width="33%" />
<table cellpadding="3">
  <tr>
    <td align="center"><b>$PageLayout</b></td>
    <td align="center"><b>$NumberOfColumns</b></td>
    <td align="center"><b>$PaperType</b></td>
  </tr>
  <tr>
    <td>
      <input type="radio" name="${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";

    my %parmhash=&Apache::lonnet::coursedescription($ENV{'request.course.id'});
    my $DefaultPaperSize=$parmhash{'default_paper_size'};
    if ($DefaultPaperSize eq '') {$DefaultPaperSize='letter';}
    $i = 0;
    foreach (@paperSize) {
	$_=~/(\w+)/;
	my $papersize=$1;
        if ($paperSize[$i]=~/$DefaultPaperSize/) {
            $result .= "<option selected value='$papersize'>" . $paperSize[$i] . "</option>\n";
        } else {
            $result .= "<option value='$papersize'>" . $paperSize[$i] . "</option>\n";
        }
        $i++;
    }
    $result .= "</select></td></tr></table>";
    return $result;
}

sub postprocess {
    my $self = shift;

    my $var = $self->{'variable'};
    my $helper = Apache::lonhelper->getHelper();
    $helper->{VARS}->{$var} = 
        $ENV{"form.$var.layout"} . '|' . $ENV{"form.$var.cols"} . '|' .
        $ENV{"form.$var.paper"};
    return 1;
}

1;

package Apache::lonprintout::page_size_state;

=pod

=head1 Helper element: page_size_state

See lonhelper.pm documentation for discussion of the helper framework.

Apache::lonprintout::page_size_state is an element that gives the 
user the opportunity to further refine the page settings if they
select a single-column page.

page_size_state is always directly invoked in lonprintout.pm, so there
is no tag interface. You actually pass parameters to the constructor.

=over 4

=item * B<new>(varName): varName is where the print information will be stored in the format FIXME.

=back

=cut

use Apache::lonhelper;

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 than 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__


FreeBSD-CVSweb <freebsd-cvsweb@FreeBSD.org>