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Bug created during submission of version 1.241 at 09.29.2003 is fixed.
It appeared that instead of printing the assignment name (when you print from the whole course) the ref on array was printed.

# The LearningOnline Network
# Printout
#
# $Id: lonprintout.pm,v 1.247 2003/10/02 15:33:03 sakharuk 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/
#
# (Internal Server Error Handler
#
# (Login Screen
# 5/21/99,5/22,5/25,5/26,5/31,6/2,6/10,7/12,7/14,
# 1/14/00,5/29,5/30,6/1,6/29,7/1,11/9 Gerd Kortemeyer)
#
# 3/1/1 Gerd Kortemeyer)
#
# 3/1 Gerd Kortemeyer
#
# 9/17 Alex Sakharuk
#
package Apache::lonprintout;

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 GDBM_File;


my %hash;
my $LaTeXwidth = 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;/\$=\$/g;
    $result =~ s/&(\#0?62|gt|\#155);/\$>\$/g;
    $result =~ s/&\#0?63;/\?/g;
    $result =~ s/&\#0?65;/A/g;
    $result =~ s/&\#0?66;/B/g;
    $result =~ s/&\#0?67;/C/g;
    $result =~ s/&\#0?68;/D/g;
    $result =~ s/&\#0?69;/E/g;
    $result =~ s/&\#0?70;/F/g;
    $result =~ s/&\#0?71;/G/g;
    $result =~ s/&\#0?72;/H/g;
    $result =~ s/&\#0?73;/I/g;
    $result =~ s/&\#0?74;/J/g;
    $result =~ s/&\#0?75;/K/g;
    $result =~ s/&\#0?76;/L/g;
    $result =~ s/&\#0?77;/M/g;
    $result =~ s/&\#0?78;/N/g;
    $result =~ s/&\#0?79;/O/g;
    $result =~ s/&\#0?80;/P/g;
    $result =~ s/&\#0?81;/Q/g;
    $result =~ s/&\#0?82;/R/g;
    $result =~ s/&\#0?83;/S/g;
    $result =~ s/&\#0?84;/T/g;
    $result =~ s/&\#0?85;/U/g;
    $result =~ s/&\#0?86;/V/g;
    $result =~ s/&\#0?87;/W/g;
    $result =~ s/&\#0?88;/X/g;
    $result =~ s/&\#0?89;/Y/g;
    $result =~ s/&\#0?90;/Z/g;
    $result =~ s/&\#0?91;/[/g;
    $result =~ s/&\#0?92;/\$\\setminus\$/g;
    $result =~ s/&\#0?93;/]/g;
    $result =~ s/&\#(0?94|136);/\$\\wedge\$/g;
    $result =~ s/&\#(0?95|138|154);/\\underline{\\makebox[2mm]{\\strut}}/g;
    $result =~ s/&\#(0?96|145);/\`/g;
    $result =~ s/&\#0?97;/a/g;
    $result =~ s/&\#0?98;/b/g;
    $result =~ s/&\#0?99;/c/g;
    $result =~ s/&\#100;/d/g;
    $result =~ s/&\#101;/e/g;
    $result =~ s/&\#102;/f/g;
    $result =~ s/&\#103;/g/g;
    $result =~ s/&\#104;/h/g;
    $result =~ s/&\#105;/i/g;
    $result =~ s/&\#106;/j/g;
    $result =~ s/&\#107;/k/g;
    $result =~ s/&\#108;/l/g;
    $result =~ s/&\#109;/m/g;
    $result =~ s/&\#110;/n/g;
    $result =~ s/&\#111;/o/g;
    $result =~ s/&\#112;/p/g;
    $result =~ s/&\#113;/q/g;
    $result =~ s/&\#114;/r/g;
    $result =~ s/&\#115;/s/g;
    $result =~ s/&\#116;/t/g;
    $result =~ s/&\#117;/u/g;
    $result =~ s/&\#118;/v/g;
    $result =~ s/&\#119;/w/g;
    $result =~ s/&\#120;/x/g;
    $result =~ s/&\#121;/y/g;
    $result =~ s/&\#122;/z/g;
    $result =~ s/&\#123;/\\{/g;
    $result =~ s/&\#124;/\|/g;
    $result =~ s/&\#125;/\\}/g;
    $result =~ s/&\#126;/\~/g;
    $result =~ s/&\#131;/\\textflorin /g;
    $result =~ s/&\#132;/\"/g;
    $result =~ s/&\#133;/\$\\ldots\$/g;
    $result =~ s/&\#134;/\$\\dagger\$/g;
    $result =~ s/&\#135;/\$\\ddagger\$/g;
    $result =~ s/&\#137;/\\textperthousand /g;
    $result =~ s/&\#140;/{\\OE}/g;
    $result =~ s/&\#147;/\`\`/g;
    $result =~ s/&\#148;/\'\'/g;
    $result =~ s/&\#149;/\$\\bullet\$/g;
    $result =~ s/&\#150;/--/g;
    $result =~ s/&\#151;/---/g;
    $result =~ s/&\#152;/\$\\sim\$/g;
    $result =~ s/&\#153;/\\texttrademark /g;
    $result =~ s/&\#156;/\\oe/g;
    $result =~ s/&\#159;/\\\"Y/g;
    $result =~ s/&(\#160|nbsp);//g;
    $result =~ s/&(\#161|iexcl);/!\`/g;
    $result =~ s/&(\#162|cent);/\\textcent /g;
    $result =~ s/&(\#163|pound);/\\pounds /g; 
    $result =~ s/&(\#164|curren);/\\textcurrency /g;
    $result =~ s/&(\#165|yen);/\\textyen /g;
    $result =~ s/&(\#166|brvbar);/\\textbrokenbar /g;
    $result =~ s/&(\#167|sect);/\\textsection /g;
    $result =~ s/&(\#168|uml);/\\texthighdieresis /g;
    $result =~ s/&(\#169|copy);/\\copyright /g;
    $result =~ s/&(\#170|ordf);/\\textordfeminine /g;
    $result =~ s/&(\#172|not);/\$\\neg\$/g;
    $result =~ s/&(\#173|shy);/ - /g;
    $result =~ s/&(\#174|reg);/\\textregistered /g;
    $result =~ s/&(\#175|macr);/\$^{-}\$/g;
    $result =~ s/&(\#176|deg);/\$^{\\circ}\$/g;
    $result =~ s/&(\#177|plusmn);/\$\\pm\$/g;
    $result =~ s/&(\#178|sup2);/\$^2\$/g;
    $result =~ s/&(\#179|sup3);/\$^3\$/g;
    $result =~ s/&(\#180|acute);/\\textacute /g;
    $result =~ s/&(\#181|micro);/\$\\mu\$/g;
    $result =~ s/&(\#182|para);/\\P/g;
    $result =~ s/&(\#183|middot);/\$\\cdot\$/g;
    $result =~ s/&(\#184|cedil);/\\c{\\strut}/g;
    $result =~ s/&(\#185|sup1);/\$^1\$/g;
    $result =~ s/&(\#186|ordm);/\\textordmasculine /g;
    $result =~ s/&(\#188|frac14);/\\textonequarter /g;
    $result =~ s/&(\#189|frac12);/\\textonehalf /g;
    $result =~ s/&(\#190|frac34);/\\textthreequarters /g;
    $result =~ s/&(\#191|iquest);/?\`/g;   
    $result =~ s/&(\#192|Agrave);/\\\`{A}/g;  
    $result =~ s/&(\#193|Aacute);/\\\'{A}/g; 
    $result =~ s/&(\#194|Acirc);/\\^{A}/g;
    $result =~ s/&(\#195|Atilde);/\\~{A}/g;
    $result =~ s/&(\#196|Auml);/\\\"{A}/g; 
    $result =~ s/&(\#197|Aring);/{\\AA}/g;
    $result =~ s/&(\#198|AElig);/{\\AE}/g;
    $result =~ s/&(\#199|Ccedil);/\\c{c}/g;
    $result =~ s/&(\#200|Egrave);/\\\`{E}/g;  
    $result =~ s/&(\#201|Eacute);/\\\'{E}/g;    
    $result =~ s/&(\#202|Ecirc);/\\^{E}/g;
    $result =~ s/&(\#203|Euml);/\\\"{E}/g;
    $result =~ s/&(\#204|Igrave);/\\\`{I}/g;
    $result =~ s/&(\#205|Iacute);/\\\'{I}/g;    
    $result =~ s/&(\#206|Icirc);/\\^{I}/g;
    $result =~ s/&(\#207|Iuml);/\\\"{I}/g;    
    $result =~ s/&(\#209|Ntilde);/\\~{N}/g;
    $result =~ s/&(\#210|Ograve);/\\\`{O}/g;
    $result =~ s/&(\#211|Oacute);/\\\'{O}/g;
    $result =~ s/&(\#212|Ocirc);/\\^{O}/g;
    $result =~ s/&(\#213|Otilde);/\\~{O}/g;
    $result =~ s/&(\#214|Ouml);/\\\"{O}/g;    
    $result =~ s/&(\#215|times);/\$\\times\$/g;
    $result =~ s/&(\#216|Oslash);/{\\O}/g;
    $result =~ s/&(\#217|Ugrave);/\\\`{U}/g;    
    $result =~ s/&(\#218|Uacute);/\\\'{U}/g;
    $result =~ s/&(\#219|Ucirc);/\\^{U}/g;
    $result =~ s/&(\#220|Uuml);/\\\"{U}/g;
    $result =~ s/&(\#221|Yacute);/\\\'{Y}/g;
    $result =~ s/&(\#223|szlig);/\\ss/g;
    $result =~ s/&(\#224|agrave);/\\\`{a}/g;
    $result =~ s/&(\#225|aacute);/\\\'{a}/g;
    $result =~ s/&(\#226|acirc);/\\^{a}/g;
    $result =~ s/&(\#227|atilde);/\\~{a}/g;
    $result =~ s/&(\#228|auml);/\\\"{a}/g;
    $result =~ s/&(\#229|aring);/{\\aa}/g;
    $result =~ s/&(\#230|aelig);/{\\ae}/g;
    $result =~ s/&(\#231|ccedil);/\\c{c}/g;
    $result =~ s/&(\#232|egrave);/\\\`{e}/g;
    $result =~ s/&(\#233|eacute);/\\\'{e}/g;
    $result =~ s/&(\#234|ecirc);/\\^{e}/g;
    $result =~ s/&(\#235|euml);/\\\"{e}/g;
    $result =~ s/&(\#236|igrave);/\\\`{i}/g;
    $result =~ s/&(\#237|iacute);/\\\'{i}/g;
    $result =~ s/&(\#238|icirc);/\\^{i}/g;
    $result =~ s/&(\#239|iuml);/\\\"{i}/g;
    $result =~ s/&(\#240|eth);/\$\\partial\$/g;
    $result =~ s/&(\#241|ntilde);/\\~{n}/g;
    $result =~ s/&(\#242|ograve);/\\\`{o}/g;
    $result =~ s/&(\#243|oacute);/\\\'{o}/g;
    $result =~ s/&(\#244|ocirc);/\\^{o}/g;
    $result =~ s/&(\#245|otilde);/\\~{o}/g;
    $result =~ s/&(\#246|ouml);/\\\"{o}/g;
    $result =~ s/&(\#247|divide);/\$\\div\$/g;
    $result =~ s/&(\#248|oslash);/{\\o}/g;
    $result =~ s/&(\#249|ugrave);/\\\`{u}/g; 
    $result =~ s/&(\#250|uacute);/\\\'{u}/g;
    $result =~ s/&(\#251|ucirc);/\\^{u}/g;
    $result =~ s/&(\#252|uuml);/\\\"{u}/g;
    $result =~ s/&(\#253|yacute);/\\\'{y}/g;
    $result =~ s/&(\#255|yuml);/\\\"{y}/g;
    $result =~ s/&\#952;/\$\\theta\$/g;
#Greek Alphabet
    $result =~ s/&(alpha|\#945);/\$\\alpha \$/g;
    $result =~ s/&(beta|\#946);/\$\\beta \$/g;
    $result =~ s/&(gamma|\#947);/\$\\gamma \$/g;
    $result =~ s/&(delta|\#948);/\$\\delta \$/g;
    $result =~ s/&(epsilon|\#949);/\$\\epsilon \$/g;
    $result =~ s/&(zeta|\#950);/\$\\zeta \$/g;
    $result =~ s/&(eta|\#951);/\$\\eta \$/g;
    $result =~ s/&(theta|\#952);/\$\\theta \$/g;
    $result =~ s/&(iota|\#953);/\$\\iota \$/g;
    $result =~ s/&(kappa|\#954);/\$\\kappa \$/g;
    $result =~ s/&(lambda|\#955);/\$\\lambda \$/g;
    $result =~ s/&(mu|\#956);/\$\\mu \$/g;
    $result =~ s/&(nu|\#957);/\$\\nu \$/g;
    $result =~ s/&(xi|\#958);/\$\\xi \$/g;
    $result =~ s/&(omicron|\#959);/o/g;
    $result =~ s/&(pi|\#960);/\$\\pi \$/g;
    $result =~ s/&(rho|\#961);/\$\\rho \$/g;
    $result =~ s/&(sigma|\#963);/\$\\sigma \$/g;
    $result =~ s/&(tau|\#964);/\$\\tau \$/g;
    $result =~ s/&(upsilon|\#965);/\$\\upsilon \$/g;
    $result =~ s/&(phi|\#966);/\$\\phi \$/g;
    $result =~ s/&(chi|\#967);/\$\\chi \$/g;
    $result =~ s/&(psi|\#968);/\$\\psi \$/g;
    $result =~ s/&(omega|\#969);/\$\\omega \$/g;
    $result =~ s/&(thetasym|\#977);/\$\\vartheta \$/g;
    $result =~ s/&(piv|\#982);/\$\\varpi \$/g;
    $result =~ s/&(Alpha|\#913);/A/g;
    $result =~ s/&(Beta|\#914);/B/g;
    $result =~ s/&(Gamma|\#915);/\$\\Gamma \$/g;
    $result =~ s/&(Delta|\#916);/\$\\Delta \$/g;
    $result =~ s/&(Epsilon|\#917);/E/g;
    $result =~ s/&(Zeta|\#918);/Z/g;
    $result =~ s/&(Eta|\#919);/H/g;
    $result =~ s/&(Theta|\#920);/\$\\Theta \$/g;
    $result =~ s/&(Iota|\#921);/I/g;
    $result =~ s/&(Kappa|\#922);/K/g;
    $result =~ s/&(Lambda|\#923);/\$\\Lambda \$/g;
    $result =~ s/&(Mu|\#924);/M/g;
    $result =~ s/&(Nu|\#925);/N/g;
    $result =~ s/&(Xi|\#926);/\$\\Xi \$/g;
    $result =~ s/&(Omicron|\#927);/O/g;
    $result =~ s/&(Pi|\#928);/\$\\Pi \$/g;
    $result =~ s/&(Rho|\#929);/P/g;
    $result =~ s/&(Sigma|\#931);/\$\\Sigma \$/g;
    $result =~ s/&(Tau|\#932);/T/g;
    $result =~ s/&(Upsilon|\#933);/\$\\Upsilon \$/g;
    $result =~ s/&(Phi|\#934);/\$\\Phi \$/g;
    $result =~ s/&(Chi|\#935);/X/g;
    $result =~ s/&(Psi|\#936);/\$\\Psi \$/g;
    $result =~ s/&(Omega|\#937);/\$\\Omega \$/g;
#Arrows (extended HTML 4.01)
    $result =~ s/&(larr|\#8592);/\$\\leftarrow \$/g;
    $result =~ s/&(uarr|\#8593);/\$\\uparrow \$/g;
    $result =~ s/&(rarr|\#8594);/\$\\rightarrow \$/g;
    $result =~ s/&(darr|\#8595);/\$\\downarrow \$/g;
    $result =~ s/&(harr|\#8596);/\$\\leftrightarrow \$/g;
    $result =~ s/&(lArr|\#8656);/\$\\Leftarrow \$/g;
    $result =~ s/&(uArr|\#8657);/\$\\Uparrow \$/g;
    $result =~ s/&(rArr|\#8658);/\$\\Rightarrow \$/g;
    $result =~ s/&(dArr|\#8659);/\$\\Downarrow \$/g;
    $result =~ s/&(hArr|\#8660);/\$\\Leftrightarrow \$/g;
#Mathematical Operators (extended HTML 4.01)
    $result =~ s/&(forall|\#8704);/\$\\forall \$/g;
    $result =~ s/&(part|\#8706);/\$\\partial \$/g;
    $result =~ s/&(exist|\#8707);/\$\\exists \$/g;
    $result =~ s/&(empty|\#8709);/\$\\emptyset \$/g;
    $result =~ s/&(nabla|\#8711);/\$\\nabla \$/g;
    $result =~ s/&(isin|\#8712);/\$\\in \$/g;
    $result =~ s/&(notin|\#8713);/\$\\notin \$/g;
    $result =~ s/&(ni|\#8715);/\$\\ni \$/g;
    $result =~ s/&(prod|\#8719);/\$\\prod \$/g;
    $result =~ s/&(sum|\#8721);/\$\\sum \$/g;
    $result =~ s/&(minus|\#8722);/\$-\$/g;
    $result =~ s/&(lowast|\#8727);/\$*\$/g;
    $result =~ s/&(radic|\#8730);/\$\\surd \$/g;
    $result =~ s/&(prop|\#8733);/\$\\propto \$/g;
    $result =~ s/&(infin|\#8734);/\$\\infty \$/g;
    $result =~ s/&(ang|\#8736);/\$\\angle \$/g;
    $result =~ s/&(and|\#8743);/\$\\wedge \$/g;
    $result =~ s/&(or|\#8744);/\$\\vee \$/g;
    $result =~ s/&(cap|\#8745);/\$\\cap \$/g;
    $result =~ s/&(cup|\#8746);/\$\\cup \$/g;
    $result =~ s/&(int|\#8747);/\$\\int \$/g;
    $result =~ s/&(sim|\#8764);/\$\\sim \$/g;
    $result =~ s/&(cong|\#8773);/\$\\cong \$/g;
    $result =~ s/&(asymp|\#8776);/\$\\approx \$/g;
    $result =~ s/&(ne|\#8800);/\$\\not= \$/g;
    $result =~ s/&(equiv|\#8801);/\$\\equiv \$/g;
    $result =~ s/&(le|\#8804);/\$\\leq \$/g;
    $result =~ s/&(ge|\#8805);/\$\\geq \$/g;
    $result =~ s/&(sub|\#8834);/\$\\subset \$/g;
    $result =~ s/&(sup|\#8835);/\$\\supset \$/g;
    $result =~ s/&(nsub|\#8836);/\$\\not\\subset \$/g;
    $result =~ s/&(sube|\#8838);/\$\\subseteq \$/g;
    $result =~ s/&(supe|\#8839);/\$\\supseteq \$/g;
    $result =~ s/&(oplus|\#8853);/\$\\oplus \$/g;
    $result =~ s/&(otimes|\#8855);/\$\\otimes \$/g;
    $result =~ s/&(perp|\#8869);/\$\\perp \$/g;
    $result =~ s/&(sdot|\#8901);/\$\\cdot \$/g;
#Geometric Shapes (extended HTML 4.01)
    $result =~ s/&(loz|\#9674);/\$\\Diamond \$/g;
#Miscellaneous Symbols (extended HTML 4.01)
    $result =~ s/&(spades|\#9824);/\$\\spadesuit \$/g;
    $result =~ s/&(clubs|\#9827);/\$\\clubsuit \$/g;
    $result =~ s/&(hearts|\#9829);/\$\\heartsuit \$/g;
    $result =~ s/&(diams|\#9830);/\$\\diamondsuit \$/g;
    return $result;
}


sub page_format {
#
#Correspondence between $papersize variable and real paper format:
# 0 - "Letter [8 1/2x11 in]"
# 1 - "Legal [8 1/2x14 in]"
# 2 - "Ledger/Tabloid [11x17 in]"
# 3 - "Executive [7 1/2x10 in]"
# 4 - "A2 [420x594 mm]"
# 5 - "A3 [297x420 mm]"
# 6 - "A4 [210x297 mm]"
# 7 - "A5 [148x210 mm]"
# 8 - "A6 [105x148 mm]"
# 
    my ($papersize,$layout,$numberofcolumns) = @_; 
    my ($textwidth,$textheight,$oddoffset,$evenoffset,$topmargin) = (0,0,0,0,0);
    if ($papersize eq '0') {
	if ($layout eq 'book') {
	    if ($numberofcolumns == 1) {
		$textwidth = '7.1 in';      #'18 cm';
		$textheight = '10.2 in';    #'25.9 cm';
		$oddoffset = '-0.57 in';
		$evenoffset = '-0.57 in';
	    } elsif ($numberofcolumns == 2) {
		$textwidth = '3.66 in';     #'93 mm';
		$textheight = '10.2 in';    #'25.9 cm';
		$oddoffset = '-0.57 in';
		$evenoffset = '-0.57 in';
	    }
	} elsif ($layout eq 'album') {
	    if ($numberofcolumns eq '1') {
		$textwidth = '8.8 in';
		$textheight = '6.8 in';
		$oddoffset = '-40 pt';
		$evenoffset = '-60 pt';
	    } elsif ($numberofcolumns == 2) {
		$textwidth = '4.4 in';
		$textheight = '6.8 in';
		$oddoffset = '-0.5 in';
		$evenoffset = '-1.5 in';
		$topmargin = '3.5 in';
	    }
	}
#    } elsif($papersize eq '1') {
#    } elsif($papersize eq '2') {
#    } elsif($papersize eq '3'/) {
    } elsif($papersize eq '6') {
	if ($layout eq 'book') {
	    if ($numberofcolumns == 1) {
		$textwidth = '18 cm';
		$textheight = '28 cm';
		$oddoffset = '-0.57 in';
		$evenoffset = '-0.57 in';
	    } elsif ($numberofcolumns == 2) {
		$textwidth = '96 mm';
		$textheight = '2 cm';
		$oddoffset = '-0.57 in';
		$evenoffset = '-0.57 in';
	    }
	} elsif ($layout eq 'album') {
	    if ($numberofcolumns eq '1') {
		$textwidth = '8.5 in';
		$textheight = '7.7 in';
		$oddoffset = '-40 pt';
		$evenoffset = '-60 pt';
	    } elsif ($numberofcolumns == 2) {
		$textwidth = '3.9 in';
		$textheight = '7.7 in';
		$oddoffset = '-40 pt';
		$evenoffset = '-60 pt';
	    }
	}
#    } elsif($papersize eq '5') {
#    } elsif($papersize eq '4') {
#    } elsif($papersize eq '7') {
#    } elsif($papersize eq '8') {
    }
    return $textwidth,$textheight,$oddoffset,$evenoffset,$topmargin;
}


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) = @_; 
    my ($textwidth,$textheight,$oddoffset,$evenoffset,$topmargin);
    $assignment=&Apache::lonxml::latex_special_symbols($assignment,'header');
    if ($numberofcolumns != 1) {
	($textwidth,$textheight,$oddoffset,$evenoffset,$topmargin) = &page_format($papersize,$layout,$numberofcolumns,$topmargin);
    } else {
	($textwidth,$textheight,$oddoffset,$evenoffset) = ($ENV{'form.width'},$ENV{'form.height'},$ENV{'form.leftmargin'},$ENV{'form.leftmargin'});
    }
    my $name = &get_name();
    my $courseidinfo = &get_course();
    if (defined($courseidinfo)) { $courseidinfo=' - '.$courseidinfo }
    if ($layout eq 'album') {
	my $topmargintoinsert = '';
	if ($topmargin ne '0') {$topmargintoinsert='\setlength{\topmargin}{'.$topmargin.'}';}
	    $text =~ s/\\begin{document}/\\setlength{\\oddsidemargin}{$oddoffset}\\setlength{\\evensidemargin}{$evenoffset}$topmargintoinsert\\setlength{\\textwidth}{$textwidth}\\setlength{\\textheight}{$textheight}\\setlength{\\textfloatsep}{8pt plus 2\.0pt minus 4\.0pt}\\newlength{\\minipagewidth}\\setlength{\\minipagewidth}{\\textwidth\/\$number_of_columns-0\.2cm}\\usepackage{fancyhdr}\\pagestyle{fancy}\\rhead{}\\chead{}\\lhead{\\textbf{$name} $courseidinfo \\hfill \\thepage \\\\ \\textit{$assignment}} \\begin{document}\\voffset=-0\.8 cm\\setcounter{page}{1} /;
    } elsif ($layout eq 'book') {
	if ($choice ne 'All class print') { 
	    $text =~ s/\\begin{document}/\\textheight $textheight\\oddsidemargin = $evenoffset\\evensidemargin = $evenoffset\\textwidth= $textwidth\\newlength{\\minipagewidth}\\setlength{\\minipagewidth}{\\textwidth\/\$number_of_columns-0\.2cm}\\renewcommand{\\ref}{\\keephidden\}\\usepackage{fancyhdr}\\pagestyle{fancy}\\rhead{}\\chead{}\\lhead{\\textbf{$name} $courseidinfo \\hfill \\thepage \\\\ \\textit{$assignment}}\\begin{document}\\voffset=-0\.8 cm\\setcounter{page}{1}/;
	} else {
	    $text =~ s/\\pagestyle{fancy}\\rhead{}\\chead{}\s*\\begin{document}/\\textheight = $textheight\\oddsidemargin = $evenoffset\\evensidemargin = $evenoffset\\textwidth= $textwidth\\newlength{\\minipagewidth}\\setlength{\\minipagewidth}{\\textwidth\/\$number_of_columns-0\.2cm}\\renewcommand{\\ref}{\\keephidden\}\\pagestyle{fancy}\\rhead{}\\chead{}\\begin{document}\\voffset=-0\.8cm\\setcounter{page}{1}  \\vskip 5 mm /;
	}
    }
    if ($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 $name_of_resourse = $hash{'title_'.$hash{'ids_'.$ENV{'form.postdata'}}};
    my $symbolic = &Apache::lonnet::symbread($ENV{'form.postdata'});
    my ($map,$id,$resource)=&Apache::lonnet::decode_symb($symbolic);
    $map=&Apache::lonnet::clutter($map);
    my $name_of_sequence;
    $name_of_sequence = $hash{'title_'.$hash{'ids_'.$map}};
    if ($name_of_sequence =~ /^\s*$/) {
	$map =~ m|([^/]+)$|;
	$name_of_sequence = $1;
    }
    my $name_of_map = $hash{'title_'.$hash{'ids_'.&Apache::lonnet::clutter($ENV{'request.course.uri'})}};
    if ($name_of_map =~ /^\s*$/) {
	$ENV{'request.course.uri'} =~ m|([^/]+)$|;
	$name_of_map = $1;
    }
    return ($name_of_resourse,$name_of_sequence,$name_of_map);

}


sub latex_corrections {

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

#    $result =~ s/\\includegraphics{/\\includegraphics\[width=\\minipagewidth\]{/g;
    $result =~ s/\$number_of_columns/$number_of_columns/g;
    $result =~ s/(\\end{document})/\\strut\\newline\\noindent\\makebox\[\\textwidth\/$number_of_columns\]\[b\]{\\hrulefill}\\newline\\noindent\\tiny Printed from LON-CAPA\\copyright MSU{\\hfill} Licensed under GNU General Public License  $1/;
    $result =~ s/(\\end{longtable}\s*)(\\strut\\newline\\noindent\\makebox\[\\textwidth\/$number_of_columns\]\[b\]{\\hrulefill})/$2$1/g;
    $result =~ s/(\\end{longtable}\s*)\\strut\\newline/$1/g;
#-- LaTeX corrections     
    my $first_comment = index($result,'<!--',0);
    while ($first_comment != -1) {
	my $end_comment = index($result,'-->',$first_comment);
	substr($result,$first_comment,$end_comment-$first_comment+3) = '';
	$first_comment = index($result,'<!--',$first_comment);
    }
    $result =~ s/^\s+$//gm; #remove empty lines
    $result =~ s/(\s)(\s+)/$1/g; #removes more than one empty space
    $result =~ s/\\\\\s*\\vskip/\\vskip/gm;
    $result =~ s/\\\\\s*\\noindent\s*(\\\\)+/\\\\\\noindent /g;
    $result =~ s/{\\par }\s*\\\\/\\\\/gm;
	$result =~ s/\\\\\s+\[/ \[/g;
    $result =~ s/\b__+\b/\\makebox\[1 cm\]\[b\]{\\hrulefill}/g;
    #conversion of html characters to LaTeX equivalents
    if ($result =~ m/&(\w+|#\d+);/) {
	$result = &character_chart($result);
    }
    $result =~ s/(\\end{tabular})\s*\\vskip 0 mm/$1/g;
    $result =~ s/(\\begin{enumerate})\s*\\noindent/$1/g;

    return $result;
}


sub 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') {
	$output.='\batchmode';
    }
    $output.='\newcommand{\keephidden}[1]{}\renewcommand{\deg}{$^{\circ}$}'.
	     '\usepackage{longtable}\usepackage{textcomp}\usepackage{makeidx}'.
	     '\usepackage[dvips]{graphicx}\usepackage{epsfig}\usepackage{calc}'.
	     '\newenvironment{choicelist}{\begin{list}{}{\setlength{\rightmargin}{0in}'.
	     '\setlength{\leftmargin}{0.13in}\setlength{\topsep}{0.05in}'.
	     '\setlength{\itemsep}{0.022in}\setlength{\parsep}{0in}'.
	     '\setlength{\belowdisplayskip}{0.04in}\setlength{\abovedisplayskip}{0.05in}'.
	     '\setlength{\abovedisplayshortskip}{-0.04in}'.
	     '\setlength{\belowdisplayshortskip}{0.04in}}}{\end{list}}'.
	     '\renewenvironment{theindex}{\begin{list}{}{{\vskip 1mm \noindent \large'.
	     '\textbf{Index}} \newline \setlength{\rightmargin}{0in}'.
	     '\setlength{\leftmargin}{0.13in}\setlength{\topsep}{0.01in}'.
	     '\setlength{\itemsep}{0.1in}\setlength{\parsep}{-0.02in}'.
	     '\setlength{\belowdisplayskip}{0.01in}\setlength{\abovedisplayskip}{0.01in}'.
	     '\setlength{\abovedisplayshortskip}{-0.04in}'.
	     '\setlength{\belowdisplayshortskip}{0.01in}}}{\end{list}}\begin{document}';
    return $output;	     
}

sub path_to_problem {
    my ($urlp,$LaTeXwidth)=@_;
    my $newurlp = '';
    $LaTeXwidth=~s/\s*mm\s*$//;
    my $HowMany = length($urlp)*2;
    if ($HowMany > $LaTeXwidth) {
	my @temporrary = split '/',$urlp;
	my $HowManyNew = 0;
	for (my $ii=0;$ii<=$#temporrary;$ii++) {
	    if ($temporrary[$ii] ne '') {
		$HowManyNew += length($temporrary[$ii])*2;
		if ($HowManyNew < $LaTeXwidth ) {
		    $newurlp .=  '/'.$temporrary[$ii];
		} else {
		    $HowManyNew = 0;
		    $newurlp .=  '|\vskip -1 mm \noindent \verb|';
		    $ii--;
		}
	    }
	}
    }
    return '{\small\noindent\verb|'.$newurlp.'|\vskip 0 mm}';
}

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

    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 $LaTeXwidth; 
    if ($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';
    
    if ($helper->{'VARS'}->{'PRINT_TYPE'} eq 'current_document') {
      #-- single document - problem, page, html, xml, ...
	my $currentURL;
	if ($helper->{'VARS'}->{'construction'} ne '1') {
            #prints published resource
	    $currentURL=$helper->{'VARS'}->{'postdata'};
	} else {
            #prints resource from the construction space
	    $currentURL='/'.$helper->{'VARS'}->{'filename'};
	    if ($currentURL=~/([^?]+)/) {$currentURL=$1;}
	}
	$selectionmade = 1;
	if ($currentURL=~/\.(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;
		$moreenv{'request.filename'}=$currentURL;
		my %form;
		$form{'grade_target'}='tex';
		$form{'textwidth'}=$LaTeXwidth;	
		$form{'problem_split'}=$parmhash{'problem_stream_switch'};
		$form{'latex_type'}=$helper->{'VARS'}->{'LATEX_TYPE'};
		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')) {
		my %form;
		$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 ';
			$texversion.=&path_to_problem ($currentURL,$LaTeXwidth);
		    } else {
			$texversion.='\vskip 0 mm \noindent\textbf{Prints from construction space - there is no title.}\vskip 0 mm ';
			my $URLpath=$currentURL;
			$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') {
			my %form;
			$form{'grade_target'}='tex';
			$form{'textwidth'}=$LaTeXwidth;
			$form{'problem_split'}=$parmhash{'problem_stream_switch'};
			$form{'latex_type'}=$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')) {
			my %form;
			$form{'grade_target'}='answer';
			$form{'answer_output_mode'}='tex';
			$form{'rndseed'}=$rndseed;
                        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}';   
	} else {
	  $result.='\documentclass[letterpaper]{article}\usepackage{calc}\begin{document}Printout of this type of document is currently not supported: ';
	  if ($currentURL=~/\/(aboutme|syllabus|bulletinboard|smppg)$/) {
	      $result.=$1;
	  } elsif ($currentURL=~/\/ext\//) {
	      $result.=' \strut \\\\ THIS IS EXTERNAL RESOURCE WITH URL \strut \\\\ '.$currentURL.' ';
	  } else {
	      $result.=$currentURL;
	  }
	  $result.=' \end{document}'
	}
    } elsif (($helper->{'VARS'}->{'PRINT_TYPE'} eq 'map_problems') or
             ($helper->{'VARS'}->{'PRINT_TYPE'} eq 'map_problems_pages') or
             ($helper->{'VARS'}->{'PRINT_TYPE'} eq 'all_problems')) { 
        #-- produce an output string
	my %form=();	   
	$form{'grade_target'}='tex';
	$form{'textwidth'}=$LaTeXwidth;
	$form{'problem_split'}=$parmhash{'problem_stream_switch'};
	$form{'latex_type'}=$helper->{'VARS'}->{'LATEX_TYPE'};
	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++) {
	    my (undef,undef,$urlp)=&Apache::lonnet::decode_symb($master_seq[$i]);
	    $urlp=&Apache::lonnet::clutter($urlp);
	    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;
	    }
	    $form{'symb'}=$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 ($i==0) {$prevassignment=$assignment;}
	    #&Apache::lonnet::logthis("Trying to get $urlp with symb $master_seq[$i]");
	    my $texversion=&Apache::lonnet::ssi($urlp,%form);
	    if ($urlp=~/\.page$/) {
		($texversion,my $number_of_columns_page) = &page_cleanup($texversion);
		if ($number_of_columns_page > $number_of_columns) {$number_of_columns=$number_of_columns_page;} 
		$texversion =~ s/\\end{document}\d*/\\end{document}/;
		$flag_page_in_sequence = 'YES';
	    } 
	    if(($helper->{'VARS'}->{'ANSWER_TYPE'} eq 'no') ||
	       ($helper->{'VARS'}->{'ANSWER_TYPE'} eq 'only')) {
		my %form;
		$form{'grade_target'}='answer';
		$form{'answer_output_mode'}='tex';
		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 ';
		    $texversion.=&path_to_problem ($urlp,$LaTeXwidth);
		    $texversion.='\vskip 1 mm '.$answer;
		}
	    }
	    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;
	    $flag_latex_header_remove = 'YES';   
	}
	&Apache::lonnet::delenv('form.counter');
	if ($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') { 
     #-- prints assignments for whole class or for selected students  
	 $selectionmade=5;
	 my @students=split /\|\|\|/, $helper->{'VARS'}->{'STUDENTS'};
	 my @master_seq=split /\|\|\|/, $helper->{'VARS'}->{'RESOURCES'};
	 #loop over students
	 my $flag_latex_header_remove = 'NO'; 
	 my %moreenv;
	 $moreenv{'form.textwidth'}=$LaTeXwidth;
	 &Apache::lonnet::appenv(%moreenv);
	 my %prog_state=&Apache::lonhtmlcommon::Create_PrgWin($r,'Print Status','Class Print Status',$#students+1);
	 foreach my $person (@students) {
	    my $current_output = ''; 
#	    my ($usersection,$username,$userdomain) = split /:/,$person;
	    my ($username,$userdomain) = split /:/,$person;
	    my $fullname = &get_name($username,$userdomain);

	    if ($parmhash{'anonymous_quiz'}=~/yes/) {$fullname=' ';} #put here something reasonable for anonymous exams or quiz
            #goes through all resources, checks if they are available for current student, and produces output   
	    &Apache::lonnet::delenv('form.counter');
	    &Apache::lonxml::init_counter();
	    foreach my $curresline (@master_seq)  {
		if ($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)) {
			my $rendered = &Apache::loncommon::get_student_view($curresline,$username,$userdomain,
                                                                        $ENV{'request.course.id'},'tex');
			if ($flag_latex_header_remove eq 'YES') {
			    $rendered = &latex_header_footer_remove($rendered);
			} else {
			    $rendered =~ s/\\end{document}//;
			}
			if($helper->{'VARS'}->{'ANSWER_TYPE'} eq 'no') {
			    my %form;
			    $form{'answer_output_mode'}='tex';
			    $form{'latex_type'}=$helper->{'VARS'}->{'LATEX_TYPE'};
			    my $ansrendered = &Apache::loncommon::get_student_answers($curresline,$username,$userdomain,$ENV{'request.course.id'},%form);
			    $rendered=~s/(\\keephidden{ENDOFPROBLEM})/$ansrendered$1/;
			}
			$current_output .= $rendered;
		    }
		    $flag_latex_header_remove = 'YES';
		}
	    }
	    my $courseidinfo = &get_course();
	    if (defined($courseidinfo)) { $courseidinfo=' - '.$courseidinfo }
	    my $currentassignment=&Apache::lonxml::latex_special_symbols($helper->{VARS}->{'assignment'},'header');
	    if ($current_output=~/\\documentclass/) {
		$current_output =~ s/\\begin{document}/\\setlength{\\topmargin}{1cm} \\begin{document}\\noindent\\lhead{\\textit{\\textbf{$fullname}}$courseidinfo \\hfill \\thepage \\\\ \\textit{$currentassignment}}\\vskip 3 mm /;
	    } else {
		my $blanspages = '';
		for (my $j=0;$j<$helper->{'VARS'}->{'EMPTY_PAGES'};$j++) {$blanspages.='\clearpage\strut\clearpage';}
		$current_output = '\strut\\newline\\noindent\\makebox[\\textwidth/$number_of_columns][b]{\\hrulefill}\\newline\\noindent{\\tiny Printed from LON-CAPA\\copyright MSU{\\hfill} Licensed under GNU General Public License }\\newpage '.$blanspages.'\setcounter{page}{1}\noindent\parbox{\minipagewidth}{\noindent\\lhead{\\textit{\\textbf{'.$fullname.'}}'.$courseidinfo.' \\hfill \\thepage \\\\ \\textit{'.$currentassignment.'}}} \vskip -5 mm '.$current_output;
	    }
	    $result .= $current_output;
	    &Apache::lonnet::delenv('form.counter');	    
	    &Apache::lonxml::init_counter(); 
	    &Apache::lonhtmlcommon::Increment_PrgWin($r,\%prog_state,
						    'last student '.$fullname);
	}
	&Apache::lonhtmlcommon::Close_PrgWin($r,\%prog_state);
	$result .= '\end{document}';
	&Apache::lonnet::delenv('form.textwidth');
    } elsif ($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];
	    if ($urlp=~/\//) {
		my %form;
		$form{'grade_target'}='tex';
		$form{'textwidth'}=$LaTeXwidth;
		$form{'rndseed'}=$rndseed;
		if ($urlp =~ m|/home/([^/]+)/public_html|) {
		    $urlp =~ s|/home/([^/]*)/public_html|/~$1|;
		} else {
		    $urlp =~ s|^/home/httpd/html||;
		}
		my $texversion=&Apache::lonnet::ssi($urlp,%form);
		if($helper->{'VARS'}->{'ANSWER_TYPE'} eq 'no') {
		    my %form;
		    $form{'grade_target'}='answer';
		    $form{'answer_output_mode'}='tex';
		    $form{'latex_type'}=$helper->{'VARS'}->{'LATEX_TYPE'};
		    $form{'rndseed'}=$rndseed;
		    my $answer=&Apache::lonnet::ssi($urlp,%form);
		    $texversion=~s/(\\keephidden{ENDOFPROBLEM})/$answer$1/;
		}
                #this chunck is responsible for printing the path to problem
		my $newurlp=&path_to_problem($urlp,$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'});
    $result = &latex_corrections($number_of_columns,$result);
    #changes page's parameters for the one column output 
    if ($numberofcolumns == 1) {
	$result =~ s/\\textwidth= 9cm/\\textwidth= $helper->{'VARS'}->{'pagesize.width'} $helper->{'VARS'}->{'pagesize.widthunit'} /;
	$result =~ s/\\textheight 25\.9cm/\\textheight $helper->{'VARS'}->{'pagesize.height'} $helper->{'VARS'}->{'pagesize.heightunit'} /;
	$result =~ s/\\evensidemargin = -0\.57in/\\evensidemargin= $helper->{'VARS'}->{'pagesize.lmargin'} $helper->{'VARS'}->{'pagesize.lmarginunit'} /;
	$result =~ s/\\oddsidemargin = -0\.57in/\\oddsidemargin= $helper->{'VARS'}->{'pagesize.lmargin'} $helper->{'VARS'}->{'pagesize.lmarginunit'} /;
    }
    if ($helper->{'VARS'}->{'TABLE_CONTENTS'} eq 'yes') {$selectionmade*=10;}
    if ($helper->{'VARS'}->{'TABLE_INDEX'} eq 'yes') {
	if ($selectionmade<10) {$selectionmade*=100;} else {$selectionmade*=10;}
    }
    if ($ENV{'request.role.adv'}) {$selectionmade*=10000;}
#-- writing .tex file in prtspool 
    my $temp_file;
    my $filename = "/home/httpd/prtspool/$ENV{'user.name'}_$ENV{'user.domain'}_printout_".time."_".rand(10000000).".tex";
    unless ($temp_file = Apache::File->new('>'.$filename)) {
	$r->log_error("Couldn't open $filename for output $!");
	return SERVER_ERROR; 
    } 
    print $temp_file $result;

$r->print(<<FINALEND);
<meta http-equiv="Refresh" content="0; url=/cgi-bin/printout.pl?$filename&$laystyle&$numberofcolumns&$selectionmade">
</body>
</html>
FINALEND
}



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 />');
#	}
#	return OK;

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

    &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 ($ENV{'request.course.id'}) {
	my $fn=$ENV{'request.course.fn'};
	tie(%hash,'GDBM_File',"$fn.db",&GDBM_READER(),0640);
    }

    if ($r->header_only) {
        if ($ENV{'browser.mathml'}) {
            &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('filename');
    $helper->declareVar('construction');
    $helper->declareVar('assignment');
    
    # This will persistently load in the data we want from the
    # very first screen.
    # Detect whether we're coming from construction space
    if ($ENV{'form.postdata'}=~/^(?:http:\/\/[^\/]+\/|\/|)\~([^\/]+)\/(.*)$/) {
        $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'});

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

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

    # Get the resource name from construction space
    if ($helper->{VARS}->{'construction'}) {
        $resourceTitle = substr($helper->{VARS}->{'filename'}, 
                                rindex($helper->{VARS}->{'filename'}, '/')+1);
        $subdir = substr($helper->{VARS}->{'filename'},
                         0, rindex($helper->{VARS}->{'filename'}, '/') + 1);
    } else {
        ($map, $id, $url) = &Apache::lonnet::decode_symb($symb);
        $helper->{VARS}->{'postdata'} = Apache::lonnet::clutter($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'};
    }

    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'}) {
	$subdir='/home/httpd/html/res/'.$subdir;
    }
    # "Remove all duplicate slashes."
    $subdir =~ s|/+|/|g;

    # What can be printed is a very dynamic decision based on
    # lots of factors. So we need to dynamically build this list.
    # To prevent security leaks, states are only added to the wizard
    # if they can be reached, which ensures manipulating the form input
    # won't allow anyone to reach states they shouldn't have permission
    # to reach.

    # printChoices is tracking the kind of printing the user can
    # do, and will be used in a choices construction later.
    # In the meantime we will be adding states and elements to
    # the helper by hand.
    my $printChoices = [];
    my $paramHash;

    if ($resourceTitle) {
        push @{$printChoices}, ["<b>$resourceTitle</b> (what you just saw on the screen)", 'current_document', 'PAGESIZE'];
    }

#    $r->print($helper->{VARS}->{'postdata'});

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

    $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>Problems</b> in $sequenceTitle", 'map_problems', 'CHOOSE_PROBLEMS'];
        # Allow all resources from sequence
        push @{$printChoices}, ["<b>Resources</b> in $sequenceTitle", '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">
      <nextstate>PAGESIZE</nextstate>
      <filterfunc>return $isProblem;</filterfunc>
      <mapurl>$map</mapurl>
      <valuefunc>return $symbFilter;</valuefunc>
      </resource>
    </state>

  <state name="CHOOSE_PROBLEMS_HTML" title="Select Resource(s) to print">
    <message>(mark them then click "next" button) <br /></message>
    <resource variable="RESOURCES" multichoice="1" toponly='1' addstatus="1">
      <nextstate>PAGESIZE</nextstate>
      <filterfunc>return $isNotMap;</filterfunc>
      <mapurl>$map</mapurl>
      <valuefunc>return $symbFilter;</valuefunc>
      </resource>
    </state>
HELPERFRAGMENT

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

    # If the user is priviledged, allow them to print all 
    # problems in the course, optionally for selected students
    if ($userPriviledged && ($helper->{VARS}->{'postdata'}=~/\/res\//)) { 
        push @{$printChoices}, ['Problems from <b>entire course</b>', 'all_problems', 'ALL_PROBLEMS'];
	if ($helper->{VARS}->{'assignment'}) {
	    push @{$printChoices}, ["Problems from $sequenceTitle for <b>selected students</b>", 'problems_for_students', 'CHOOSE_STUDENTS'];
	}

        &Apache::lonxml::xmlparse($r, 'helper', <<CHOOSE_STUDENTS);
  <state name="ALL_PROBLEMS" title="Select Problem(s) to print">
    <message>(mark them then click "next" button) <br /></message>
    <resource variable="RESOURCES" multichoice="1"
	suppressEmptySequences='1' addstatus="1">
      <nextstate>PAGESIZE</nextstate>
      <filterfunc>return $isProblemOrMap;</filterfunc>
      <choicefunc>return $isProblem;</choicefunc>
      <valuefunc>return $symbFilter;</valuefunc>
      </resource>
    </state>

  <state name="CHOOSE_STUDENTS" title="Select Students and Resources">
    <student multichoice='1' variable="STUDENTS" nextstate="PAGESIZE" />
    <message><br /><big><i><b>Select resources for the assignment</b></i></big><br /></message>
    <resource variable="RESOURCES" multichoice="1" addstatus="1">
      <filterfunc>return $isProblem</filterfunc>
      <mapurl>$map</mapurl>
      <valuefunc>return $symbFilter</valuefunc>
      </resource>
    <message><br /><big><i><b>How should the results be printed?</b></i></big><br /></message>
    <choices variable="EMPTY_PAGES">
      <choice computer='0'>Start each student\'s assignment on a new page/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>
    </state>
CHOOSE_STUDENTS
    }

    # FIXME: That RE should come from a library somewhere.
    if ((((&Apache::lonnet::allowed('bre',$subdir) eq 'F') and ($helper->{VARS}->{'postdata'}=~/\.(problem|exam|quiz|assess|survey|form|library|page|xml|html|htm|xhtml|xhtm)/)) or defined $helper->{'VARS'}->{'construction'}) and $ENV{'request.role.adv'} and $subdir ne '/home/httpd/html/res/') {    
        push @{$printChoices}, ["Problems from current subdirectory <b>$subdir</b>", 'problems_from_directory', 'CHOOSE_FROM_SUBDIR'];

        my $f = '$filename';
        my $xmlfrag = <<CHOOSE_FROM_SUBDIR;
  <state name="CHOOSE_FROM_SUBDIR" title="Select File(s) from <b><small>$subdir</small></b> to print">
    <message>(mark them then click "next" button) <br /></message>
    <files variable="FILES" multichoice='1'>
      <nextstate>PAGESIZE</nextstate>
      <filechoice>return '$subdir';</filechoice>
CHOOSE_FROM_SUBDIR
        
        # 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, ["Resources from <b>selected sequence</b> in course",
			      'map_problems_pages', '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>
      </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">
      <nextstate>PAGESIZE</nextstate>
      <filterfunc>return $isProblem</filterfunc>
      <mapurl evaluate='1'>return '$escapedSequenceName';</mapurl>
      <valuefunc>return $symbFilter;</valuefunc>
      </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';
    $helper->declareVar('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'] ];
        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>");
	}

	if ($helper->{VARS}->{'construction'}) {
	    addMessage("<tr><td align='right'>Print With URL: </td><td>");
	    $paramHash = Apache::lonhelper::getParamHash();
	    $paramHash->{'variable'} = 'CONSTR_RESOURSE_URL';   
	    $helper->declareVar('CONSTR_RESOURSE_URL');         
	    $paramHash->{CHOICES} = [
				     ['No', 'no'],
				     ['Yes', 'yes'] ];
	    Apache::lonhelper::dropdown->new();
	    addMessage("</td></tr>");
	}
	if ($helper->{'VARS'}->{'construction'}) { 
	    my $xmlfrag .= <<'RNDSEED';
	    <message><tr><td align='right'>Use random seed: </td><td></message>
	    <string variable="curseed" size="15" maxlength="15">
		<defaultvalue>
	            return $helper->{VARS}->{'curseed'};
	        </defaultvalue>
	     </string>
             <message></td></tr></message>
RNDSEED
            &Apache::lonxml::xmlparse($r, 'helper', $xmlfrag);
	}
    }

    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();

    untie %hash;

    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;

my $maxColumns = 2;
my @paperSize = ("Letter [8 1/2x11 in]", "Legal [8 1/2x14 in]", 
                 "Ledger/Tabloid [11x17 in]", "Executive [7 1/2x10 in]",
                 "A2 [420x594 mm]", "A3 [297x420 mm]", "A4 [210x297 mm]", 
                 "A5 [148x210 mm]", "A6 [105x148 mm]" );

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

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

    shift;

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

sub render {
    my $self = shift;
    my $helper = Apache::lonhelper::getHelper();
    my $result = '';
    my $var = $self->{'variable'};

    $result .= <<STATEHTML;

<hr width="33%" />
<table cellpadding="3">
  <tr>
    <td align="center"><b>Page layout</b></td>
    <td align="center"><b>Number of columns</b></td>
    <td align="center"><b>Paper type</b></td>
  </tr>
  <tr>
    <td>
      <input type="radio" name="${var}.layout" value="L" /> Landscape<br />
      <input type="radio" name="${var}.layout" value="P" checked='1'  /> Portrait
    </td>
    <td align="center">
      <select name="${var}.cols">
STATEHTML

    my $i;
    for ($i = 1; $i <= $maxColumns; $i++) {
        if ($i == 2) {
            $result .= "<option value='$i' selected>$i</option>\n";
        } else {
            $result .= "<option value='$i'>$i</option>\n";
        }
    }

    $result .= "</select></td><td>\n";
    $result .= "<select name='${var}.paper'>\n";

    $i = 0;
    foreach (@paperSize) {
        if ($i == 0) {
            $result .= "<option selected value='$i'>" . $paperSize[$i] . "</option>\n";
        } else {
            $result .= "<option value='$i'>" . $paperSize[$i] . "</option>\n";
        }
        $i++;
    }

    $result .= "</select></td></tr></table>";
    return $result;
}

sub postprocess {
    my $self = shift;

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

1;

package Apache::lonprintout::page_size_state;

=pod

=head1 Helper element: page_size_state

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

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

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

=over 4

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

=back

=cut

use Apache::lonhelper;

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



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

    shift; # disturbs me (probably prevents subclassing) but works (drops
           # package descriptor)... - Jeremy

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

    # The variable name of the format element, so we can look into 
    # $helper->{VARS} to figure out whether the columns are one or two
    $self->{'formatvar'} = shift;

    # The state to transition to after selection, or after discovering
    # the cols are not set to 1
    $self->{NEXTSTATE} = shift;
    bless($self);
    return $self;
}

sub render {
    my $self = shift;
    my $helper = Apache::lonhelper::getHelper();
    my $result = '';
    my $var = $self->{'variable'};

    if (defined $self->{ERROR_MSG}) {
        $result .= '<br /><font color="#FF0000">' . $self->{ERROR_MSG} . '</font><br />';
    }

    $result .= <<ELEMENTHTML;

<p>How should the column be formatted?</p>

<table cellpadding='3'>
  <tr>
    <td align='right'><b>Width</b>:</td>
    <td align='left'><input type='text' name='$var.width' value='18' size='4'></td>
    <td align='left'>
      <select name='$var.widthunit'>
        <option>cm</option><option>in</option>
      </select>
    </td>
  </tr>
  <tr>
    <td align='right'><b>Height</b>:</td>
    <td align='left'><input type='text' name="$var.height" value="25.9" size='4'></td>
    <td align='left'>
      <select name='$var.heightunit'>
        <option>cm</option><option>in</option>
      </select>
    </td>
  </tr>
  <tr>
    <td align='right'><b>Left margin</b>:</td>
    <td align='left'><input type='text' name='$var.lmargin' value='-1.5' size='4'></td>
    <td align='left'>
      <select name='$var.lmarginunit'>
        <option>cm</option><option>in</option>
      </select>
    </td>
  </tr>
</table>

<p>Hint: Some instructors like to leave scratch space for the student by
making the width much smaller then the width of the page.</p>

ELEMENTHTML

    return $result;
}

# If the user didn't select 1 column, skip this state.
sub preprocess {
    my $self = shift;
    my $helper = Apache::lonhelper::getHelper();

    my $format = $helper->{VARS}->{$self->{'formatvar'}};
    if (substr($format, 2, 1) ne '1') {
        $helper->changeState($self->{NEXTSTATE});
    }
   
    return 1;
}

sub postprocess {
    my $self = shift;

    my $var = $self->{'variable'};
    my $helper = Apache::lonhelper->getHelper();
    my $width = $helper->{VARS}->{$var .'.width'} = $ENV{"form.${var}.width"}; 
    my $height = $helper->{VARS}->{$var .'.height'} = $ENV{"form.${var}.height"}; 
    my $lmargin = $helper->{VARS}->{$var .'.lmargin'} = $ENV{"form.${var}.lmargin"}; 
    $helper->{VARS}->{$var .'.widthunit'} = $ENV{"form.${var}.widthunit"}; 
    $helper->{VARS}->{$var .'.heightunit'} = $ENV{"form.${var}.heightunit"}; 
    $helper->{VARS}->{$var .'.lmarginunit'} = $ENV{"form.${var}.lmarginunit"}; 

    my $error = '';

    # /^-?[0-9]+(\.[0-9]*)?$/ -> optional minus, at least on digit, followed 
    # by an optional period, followed by digits, ending the string

    if ($width !~  /^-?[0-9]+(\.[0-9]*)?$/) {
        $error .= "Invalid width; please type only a number.<br />\n";
    }
    if ($height !~  /^-?[0-9]+(\.[0-9]*)?$/) {
        $error .= "Invalid height; please type only a number.<br />\n";
    }
    if ($lmargin !~  /^-?[0-9]+(\.[0-9]*)?$/) {
        $error .= "Invalid left margin; please type only a number.<br />\n";
    }

    if (!$error) {
        Apache::lonhelper::getHelper()->changeState($self->{NEXTSTATE});
        return 1;
    } else {
        $self->{ERROR_MSG} = $error;
        return 0;
    }
}



__END__