--- loncom/xml/lonxml.pm 2000/08/03 19:34:11 1.16
+++ loncom/xml/lonxml.pm 2025/02/19 23:39:38 1.577
@@ -1,172 +1,589 @@
# The LearningOnline Network with CAPA
-# XML Parser Module
+# XML Parser Module
#
-# last modified 06/26/00 by Alexander Sakharuk
+# $Id: lonxml.pm,v 1.577 2025/02/19 23:39:38 raeburn 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/
+#
+# Copyright for TtHfunc and TtMfunc by Ian Hutchinson.
+# TtHfunc and TtMfunc (the "Code") may be compiled and linked into
+# binary executable programs or libraries distributed by the
+# Michigan State University (the "Licensee"), but any binaries so
+# distributed are hereby licensed only for use in the context
+# of a program or computational system for which the Licensee is the
+# primary author or distributor, and which performs substantial
+# additional tasks beyond the translation of (La)TeX into HTML.
+# The C source of the Code may not be distributed by the Licensee
+# to any other parties under any circumstances.
+#
+
+=pod
+
+=head1 NAME
+
+Apache::lonxml
+
+=head1 SYNOPSIS
+
+XML Parsing Module
+
+This is part of the LearningOnline Network with CAPA project
+described at http://www.lon-capa.org.
+
+
+=head1 SUBROUTINES
-package Apache::lonxml;
+=cut
+
+
+package Apache::lonxml;
+use vars
+qw(@pwd @outputstack $redirection $import @extlinks $metamode $evaluate %insertlist @namespace $errorcount $warningcount);
use strict;
-use HTML::TokeParser;
-use Safe;
-use Opcode;
+use LONCAPA;
+use HTML::LCParser();
+use HTML::TreeBuilder();
+use HTML::Entities();
+use Safe();
+use Safe::Hole();
+use Math::Cephes();
+use Math::Random();
+use Math::Calculus::Expression();
+use Number::FormatEng();
+use Opcode();
+use POSIX qw(strftime);
+use Time::HiRes qw( gettimeofday tv_interval );
+use Symbol();
sub register {
- my $space;
- my @taglist;
- my $temptag;
- ($space,@taglist) = @_;
- foreach $temptag (@taglist) {
- $Apache::lonxml::alltags{$temptag}=$space;
+ my ($space,@taglist) = @_;
+ foreach my $temptag (@taglist) {
+ push(@{ $Apache::lonxml::alltags{$temptag} },$space);
+ }
+}
+
+sub deregister {
+ my ($space,@taglist) = @_;
+ foreach my $temptag (@taglist) {
+ my $tempspace = $Apache::lonxml::alltags{$temptag}[-1];
+ if ($tempspace eq $space) {
+ pop(@{ $Apache::lonxml::alltags{$temptag} });
+ }
}
+ #&printalltags();
+}
+
+use Apache::Constants qw(:common);
+use Apache::lontexconvert();
+use Apache::style();
+use Apache::run();
+use Apache::londefdef();
+use Apache::scripttag();
+use Apache::languagetags();
+use Apache::edit();
+use Apache::inputtags();
+use Apache::outputtags();
+use Apache::lonnet;
+use Apache::File();
+use Apache::loncommon();
+use Apache::lonfeedback();
+use Apache::lonmsg();
+use Apache::loncacc();
+use Apache::lonmaxima();
+use Apache::lonr();
+use Apache::lonlocal;
+use Apache::lonhtmlcommon();
+use Apache::functionplotresponse();
+use Apache::lonnavmaps();
+
+#==================================== Main subroutine: xmlparse
+
+#debugging control, to turn on debugging modify the correct handler
+
+$Apache::lonxml::debug=0;
+
+# keeps count of the number of warnings and errors generated in a parse
+$warningcount=0;
+$errorcount=0;
+
+#path to the directory containing the file currently being processed
+@pwd=();
+
+#these two are used for capturing a subset of the output for later processing,
+#don't touch them directly use &startredirection and &endredirection
+@outputstack = ();
+$redirection = 0;
+
+#controls wheter the <import> tag actually does
+$import = 1;
+@extlinks=();
+
+# meta mode is a bit weird only some output is to be turned off
+#<output> tag turns metamode off (defined in londefdef.pm)
+$metamode = 0;
+
+# turns on and of run::evaluate actually derefencing var refs
+$evaluate = 1;
+
+# data structure for edit mode, determines what tags can go into what other tags
+%insertlist=();
+
+# stores the list of active tag namespaces
+@namespace=();
+
+# stores all Scrit Vars displays for later showing
+my @script_var_displays=();
+
+# a pointer the the Apache request object
+$Apache::lonxml::request='';
+
+# a problem number counter, and check on ether it is used
+$Apache::lonxml::counter=1;
+$Apache::lonxml::counter_changed=0;
+
+# Part counter hash. In analysis mode, the
+# problems can use this to record which parts increment the counter
+# by how much. The counter subs will maintain this hash via
+# their optional part parameters. Note that the assumption is that
+# analysis is done in one request and therefore it is not necessary to
+# save this information request-to-request.
+
+
+%Apache::lonxml::counters_per_part = ();
+
+#internal check on whether to look at style defs
+$Apache::lonxml::usestyle=1;
+
+#locations used to store the parameter string for style substitutions
+$Apache::lonxml::style_values='';
+$Apache::lonxml::style_end_values='';
+
+#array of ssi calls that need to occur after we are done parsing
+@Apache::lonxml::ssi_info=();
+
+#should we do the postag variable interpolation
+$Apache::lonxml::post_evaluate=1;
+
+#a header message to emit in the case of any generated warning or errors
+$Apache::lonxml::warnings_error_header='';
+
+# Control whether or not LaTeX symbols should be substituted for their
+# \ style equivalents...this may be turned off e.g. in an verbatim
+# environment.
+
+$Apache::lonxml::substitute_LaTeX_symbols = 1; # Starts out on.
+
+sub enable_LaTeX_substitutions {
+ $Apache::lonxml::substitute_LaTeX_symbols = 1;
+}
+sub disable_LaTeX_substitutions {
+ $Apache::lonxml::substitute_LaTeX_symbols = 0;
+}
+
+sub xmlend {
+ my ($target,$parser)=@_;
+ my $mode='xml';
+ my $status='OPEN';
+ if ($Apache::lonhomework::parsing_a_problem ||
+ $Apache::lonhomework::parsing_a_task ) {
+ $mode='problem';
+ $status=$Apache::inputtags::status[-1];
+ }
+ my $discussion;
+ &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
+ ['LONCAPA_INTERNAL_no_discussion']);
+ if (
+ ( (!exists($env{'form.LONCAPA_INTERNAL_no_discussion'}))
+ || ($env{'form.LONCAPA_INTERNAL_no_discussion'} ne 'true')
+ )
+ && ($env{'form.inhibitmenu'} ne 'yes')
+ ) {
+ $discussion=&Apache::lonfeedback::list_discussion($mode,$status);
+ }
+ if ($target eq 'tex') {
+ $discussion.='<tex>\keephidden{ENDOFPROBLEM}\vskip 0.5mm\noindent\makebox[\textwidth/$number_of_columns][b]{\hrulefill}\end{document}</tex>';
+ &Apache::lonxml::newparser($parser,\$discussion,'');
+ return '';
+ }
+
+ return $discussion;
+}
+
+sub printalltags {
+ foreach my $temp (sort(keys(%Apache::lonxml::alltags))) {
+ &Apache::lonxml::debug("$temp -- ".
+ join(',',@{ $Apache::lonxml::alltags{$temp} }));
+ }
}
-
-use Apache::style;
-use Apache::lontexconvert;
-use Apache::run;
-use Apache::londefdef;
-use Apache::scripttag;
-#================================================== Main subroutine: xmlparse
sub xmlparse {
+ my ($request,$target,$content_file_string,$safeinit,%style_for_target) = @_;
+
+ &setup_globals($request,$target);
+ &Apache::inputtags::initialize_inputtags();
+ &Apache::bridgetask::initialize_bridgetask();
+ &Apache::outputtags::initialize_outputtags();
+ &Apache::edit::initialize_edit();
+ &Apache::londefdef::initialize_londefdef();
+
+#
+# do we have a course style file?
+#
- my ($target,$content_file_string,%style_for_target) = @_;
+ if ($env{'request.course.id'} && $env{'request.state'} ne 'construct') {
+ my $bodytext=
+ $env{'course.'.$env{'request.course.id'}.'.default_xml_style'};
+ if ($bodytext) {
+ foreach my $file (split(',',$bodytext)) {
+ my $location=&Apache::lonnet::filelocation('',$file);
+ my $styletext=&Apache::lonnet::getfile($location);
+ if ($styletext ne '-1') {
+ %style_for_target = (%style_for_target,
+ &Apache::style::styleparser($target,$styletext));
+ }
+ }
+ }
+ } elsif ($env{'construct.style'}
+ && ($env{'request.state'} eq 'construct')) {
+ my $location=&Apache::lonnet::filelocation('',$env{'construct.style'});
+ my $styletext=&Apache::lonnet::getfile($location);
+ if ($styletext ne '-1') {
+ %style_for_target = (%style_for_target,
+ &Apache::style::styleparser($target,$styletext));
+ }
+ }
+#&printalltags();
my @pars = ();
- push (@pars,HTML::TokeParser->new(\$content_file_string));
- my $currentstring = '';
- my $finaloutput = '';
- my $newarg = '';
- my $result;
+ my $pwd=$env{'request.filename'};
+ $pwd =~ s:/[^/]*$::;
+ &newparser(\@pars,\$content_file_string,$pwd);
+
my $safeeval = new Safe;
- $safeeval->permit("entereval");
- $safeeval->permit(":base_math");
+ my $safehole = new Safe::Hole;
+ &init_safespace($target,$safeeval,$safehole,$safeinit);
#-------------------- Redefinition of the target in the case of compound target
($target, my @tenta) = split('&&',$target);
- my @stack = ();
+ my @stack = ();
my @parstack = ();
- my $token;
- print $#pars;
- while ( $#pars > -1 ) {
- while ($token = $pars[$#pars]->get_token) {
- if ($token->[0] eq 'T') {
- $result=$token->[1];
-# $finaloutput .= &Apache::run::evaluate($token->[1],$safeeval,'');
- } elsif ($token->[0] eq 'S') {
- # add tag to stack
- push (@stack,$token->[1]);
- # add parameters list to another stack
- push (@parstack,&parstring($token));
-
- if (exists $style_for_target{$token->[1]}) {
- $finaloutput .= &recurse($style_for_target{$token->[1]},
- $target,$safeeval,\%style_for_target,
- @parstack);
- } else {
- my $result = &callsub("start_$token->[1]", $target, $token,\@parstack,
- \@pars, $safeeval, \%style_for_target);
- }
- } elsif ($token->[0] eq 'E') {
- #clear out any tags that didn't end
- while ($token->[1] ne $stack[$#stack]
- && ($#stack > -1)) {pop @stack;pop @parstack;}
-
- if (exists $style_for_target{'/'."$token->[1]"}) {
- $finaloutput .= &recurse($style_for_target{'/'."$token->[1]"},
- $target,$safeeval,\%style_for_target,
- @parstack);
- } else {
- my $result = &callsub("end_$token->[1]", $target, $token, \@parstack,
- \@pars,$safeeval, \%style_for_target);
- }
+ &initdepth();
+ &init_alarm();
+ my $finaloutput = &inner_xmlparse($target,\@stack,\@parstack,\@pars,
+ $safeeval,\%style_for_target,1);
+
+ if (@stack) {
+ &warning(&mt('At end of file some tags were still left unclosed:').
+ ' <tt><'.join('></tt>, <tt><',reverse(@stack)).
+ '></tt>');
+ }
+ if ($env{'request.uri'}) {
+ &writeallows($env{'request.uri'});
+ }
+ &do_registered_ssi();
+ if ($Apache::lonxml::counter_changed) { &store_counter() }
+
+ &clean_safespace($safeeval);
+
+ if (@script_var_displays) {
+ if ($finaloutput =~ m{</body>\s*</html>\s*$}s) {
+ my $scriptoutput = join('',@script_var_displays);
+ $finaloutput=~s{(</body>\s*</html>)\s*$}{$scriptoutput$1}s;
+ } else {
+ $finaloutput .= join('',@script_var_displays);
}
- if ($result ne "" ) {
- if ( $#parstack > -1 ) {
- $finaloutput .= &Apache::run::evaluate($result,$safeeval,
- $parstack[$#parstack]);
- } else {
- $finaloutput .= &Apache::run::evaluate($result,$safeeval,'');
- }
- $result = '';
+ undef(@script_var_displays);
+ }
+ &init_state();
+ if ($env{'form.return_only_error_and_warning_counts'}) {
+ if ($env{'request.filename'}=~/\.(html|htm|xml)$/i) {
+ my $error=&verify_html($content_file_string);
+ if ($error) { $errorcount++; }
}
- if ($token->[0] eq 'E') { pop @stack;pop @parstack; }
- }
- pop @pars;
+ return "$errorcount:$warningcount";
}
return $finaloutput;
}
-sub recurse {
-
- my @innerstack = ();
- my @innerparstack = ();
- my ($newarg,$target,$safeeval,$style_for_target,@parstack) = @_;
- my @pat = ();
- push (@pat,HTML::TokeParser->new(\$newarg));
- my $tokenpat;
- my $partstring = '';
- my $output='';
- my $decls='';
- while ( $#pat > -1 ) {
- while ($tokenpat = $pat[$#pat]->get_token) {
- if ($tokenpat->[0] eq 'T') {
- $partstring = $tokenpat->[1];
- } elsif ($tokenpat->[0] eq 'S') {
- push (@innerstack,$tokenpat->[1]);
- push (@innerparstack,&parstring($tokenpat));
- $partstring = &callsub("start_$tokenpat->[1]",
- $target, $tokenpat, \@innerparstack,
- \@pat, $safeeval, $style_for_target);
- } elsif ($tokenpat->[0] eq 'E') {
- #clear out any tags that didn't end
- while ($tokenpat->[1] ne $innerstack[$#innerstack]
- && ($#innerstack > -1)) {pop @innerstack;pop @innerparstack;}
- $partstring = &callsub("end_$tokenpat->[1]",
- $target, $tokenpat, \@innerparstack,
- \@pat, $safeeval, $style_for_target);
- }
- #pass both the variable to the style tag, and the tag we
- #are processing inside the <definedtag>
- if ( $partstring ne "" ) {
- if ( $#parstack > -1 ) {
- if ( $#innerparstack > -1 ) {
- $decls= $parstack[$#parstack].$innerparstack[$#innerparstack];
- } else {
- $decls= $parstack[$#parstack];
- }
+sub latex_special_symbols {
+ my ($string,$where)=@_;
+ #
+ # If e.g. in verbatim mode, then don't substitute.
+ # but return original string.
+ #
+ if (!($Apache::lonxml::substitute_LaTeX_symbols)) {
+ return $string;
+ }
+ if ($where eq 'header') {
+ $string =~ s/\\/\$\\backslash\$/g; # \ -> $\backslash$ per LaTex line by line pg 10.
+ $string =~ s/(\$|%|\{|\})/\\$1/g;
+ $string=&Apache::lonprintout::character_chart($string);
+ # any & or # leftover should be safe to just escape
+ $string=~s/([^\\])\&/$1\\\&/g;
+ $string=~s/([^\\])\#/$1\\\#/g;
+ $string =~ s/_/\\_/g; # _ -> \_
+ $string =~ s/\^/\\\^{}/g; # ^ -> \^{}
+ } else {
+ $string=~s/\\/\\ensuremath{\\backslash}/g;
+ $string=~s/\\\%|\%/\\\%/g;
+ $string=~s/\\\{|\{/\\{/g;
+ $string=~s/\\}|}/\\}/g;
+ $string=~s/\\ensuremath\\\{\\backslash\\}/\\ensuremath{\\backslash}/g;
+ $string=~s/\\\$|\$/\\\$/g;
+ $string=~s/\\\_|\_/\\\_/g;
+ $string=~s/([^\\]|^)(\~|\^)/$1\\$2\\strut /g;
+ $string=~s/(>|<)/\\ensuremath\{$1\}/g; #more or less
+ $string=&Apache::lonprintout::character_chart($string);
+ # any & or # leftover should be safe to just escape
+ $string=~s/\\\&|\&/\\\&/g;
+ $string=~s/\\\#|\#/\\\#/g;
+ $string=~s/\|/\$\\mid\$/g;
+#single { or } How to escape?
+ }
+ return $string;
+}
+
+sub inner_xmlparse {
+ my ($target,$stack,$parstack,$pars,$safeeval,$style_for_target,$start)=@_;
+ my $finaloutput = '';
+ my $result;
+ my $token;
+ my $dontpop=0;
+ my $lastdontpop;
+ my $lastendtag;
+ my $startredirection = $Apache::lonxml::redirection;
+ while ( $#$pars > -1 ) {
+ while ($token = $$pars['-1']->get_token) {
+ if (($token->[0] eq 'T') || ($token->[0] eq 'C') ) {
+ if ($metamode<1) {
+ my $text=$token->[1];
+ if ($token->[0] eq 'C' && $target eq 'tex') {
+ $text = '';
+# $text = '%'.$text."\n";
+ }
+ $result.=$text;
+ }
+ } elsif (($token->[0] eq 'D')) {
+ if ($metamode<1 && $target eq 'web') {
+ my $text=$token->[1];
+ $result.=$text;
+ }
+ } elsif ($token->[0] eq 'PI') {
+ if ($metamode<1 && $target eq 'web') {
+ $result=$token->[2];
+ }
+ } elsif ($token->[0] eq 'S') {
+ # add tag to stack
+ push (@$stack,$token->[1]);
+ # add parameters list to another stack
+ push (@$parstack,&parstring($token));
+ &increasedepth($token);
+ if ($Apache::lonxml::usestyle &&
+ exists($$style_for_target{$token->[1]})) {
+ $Apache::lonxml::usestyle=0;
+ my $string=$$style_for_target{$token->[1]}.
+ '<LONCAPA_INTERNAL_TURN_STYLE_ON />';
+ &Apache::lonxml::newparser($pars,\$string);
+ $Apache::lonxml::style_values=$$parstack[-1];
+ $Apache::lonxml::style_end_values=$$parstack[-1];
} else {
- if ( $#innerparstack > -1 ) {
- $decls=$innerparstack[$#innerparstack];
+ $result = &callsub("start_$token->[1]", $target, $token, $stack,
+ $parstack, $pars, $safeeval, $style_for_target);
+ }
+ } elsif ($token->[0] eq 'E') {
+ if ($Apache::lonxml::usestyle &&
+ exists($$style_for_target{'/'."$token->[1]"})) {
+ $Apache::lonxml::usestyle=0;
+ my $string=$$style_for_target{'/'.$token->[1]}.
+ '<LONCAPA_INTERNAL_TURN_STYLE_ON end="'.$token->[1].'" />';
+ &Apache::lonxml::newparser($pars,\$string);
+ $Apache::lonxml::style_values=$Apache::lonxml::style_end_values;
+ $Apache::lonxml::style_end_values='';
+ $dontpop=1;
+ } else {
+ #clear out any tags that didn't end
+ while ($token->[1] ne $$stack['-1'] && ($#$stack > -1)) {
+ my $lasttag=$$stack[-1];
+ if ($token->[1] =~ /^\Q$lasttag\E$/i) {
+ &Apache::lonxml::warning(&mt('Using tag [_1] on line [_2] as end tag to [_3]','</'.$token->[1].'>','.$token->[3].','<'.$$stack[-1].'>'));
+ last;
+ } else {
+ &Apache::lonxml::warning(&mt('Found tag [_1] on line [_2] when looking for [_3] in file.','</'.$token->[1].'>',$token->[3],'</'.$$stack[-1].'>'));
+ &end_tag($stack,$parstack,$token);
+ }
+ }
+ $result = &callsub("end_$token->[1]", $target, $token, $stack,
+ $parstack, $pars,$safeeval, $style_for_target);
+ }
+ } else {
+ &Apache::lonxml::error("Unknown token event :$token->[0]:$token->[1]:");
+ }
+ #evaluate variable refs in result
+ if ($Apache::lonxml::post_evaluate &&$result ne "") {
+ my $extras;
+ if (!$Apache::lonxml::usestyle) {
+ $extras=$Apache::lonxml::style_values;
+ }
+ if ( $#$parstack > -1 ) {
+ $result=&Apache::run::evaluate($result,$safeeval,$extras.$$parstack[-1]);
} else {
- $decls='';
+ $result= &Apache::run::evaluate($result,$safeeval,$extras);
+ }
+ }
+ $Apache::lonxml::post_evaluate=1;
+
+ if (($token->[0] eq 'T') || ($token->[0] eq 'C') || ($token->[0] eq 'D') ) {
+ #Style file definitions should be correct
+ if ($target eq 'tex' && ($Apache::lonxml::usestyle)) {
+ $result=&latex_special_symbols($result);
}
- }
- $output .= &Apache::run::evaluate($partstring,$safeeval,$decls);
- $partstring = '';
}
- if ($tokenpat->[0] eq 'E') { pop @innerstack;pop @innerparstack; }
+
+ if ($Apache::lonxml::redirection) {
+ $Apache::lonxml::outputstack['-1'] .= $result;
+ } else {
+ $finaloutput.=$result;
+ }
+ $result = '';
+
+ if ($token->[0] eq 'E') {
+ if ($dontpop) {
+ $lastdontpop = $token;
+ } else {
+ $lastendtag = $token->[1];
+ &end_tag($stack,$parstack,$token);
+ }
+ }
+ $dontpop=0;
}
- pop @pat;
+ if ($#$pars > -1) {
+ pop @$pars;
+ pop @Apache::lonxml::pwd;
+ }
+ }
+
+ if (($#$stack == 0) && ($stack->[0] eq 'physnet') && ($target eq 'web') &&
+ ($lastendtag eq 'LONCAPA_INTERNAL_TURN_STYLE_ON')) {
+ if ((ref($lastdontpop) eq 'ARRAY') && ($lastdontpop->[1] eq 'physnet')) {
+ &end_tag($stack,$parstack,$lastdontpop);
+ }
+ }
+
+ # if ($target eq 'meta') {
+ # $finaloutput.=&endredirection;
+ # }
+
+ if ( $start && $target eq 'grade') { &endredirection(); }
+ if ( $Apache::lonxml::redirection > $startredirection) {
+ while ($Apache::lonxml::redirection > $startredirection) {
+ $finaloutput .= &endredirection();
+ }
+ }
+ if (($ENV{'QUERY_STRING'}) && ($target eq 'web')) {
+ $finaloutput=&afterburn($finaloutput);
+ }
+ if ($target eq 'modified') {
+# if modfied, handle startpart and endpart
+ $finaloutput=~s/\<startpartmarker[^\>]*\>(.*)\<endpartmarker[^\>]*\>/<part>$1<\/part>/gs;
}
- return $output;
+ return $finaloutput;
}
+##
+## Looks to see if there is a subroutine defined for this tag. If so, call it,
+## otherwise do not call it as we do not know what it is.
+##
sub callsub {
- my ($sub,$target,$token,$parstack,$parser,$safeeval,$style)=@_;
+ my ($sub,$target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
my $currentstring='';
+ my $nodefault;
{
+ my $sub1;
no strict 'refs';
- if (my $space=$Apache::lonxml::alltags{$token->[1]}) {
- #print "Calling sub $sub in $space \n";
- $sub="$space\:\:$sub";
- $currentstring = &$sub($target,$token,$parstack,$parser,
- $safeeval,$style);
- } else {
- #print "NOT Calling sub $sub\n";
- if (defined($token->[4])) {
- $currentstring = $token->[4];
+ my $tag=$token->[1];
+# get utterly rid of extended html tags
+ if ($tag=~/^x\-/i) { return ''; }
+ my $space=$Apache::lonxml::alltags{$tag}[-1];
+ if (!$space) {
+ $tag=~tr/A-Z/a-z/;
+ $sub=~tr/A-Z/a-z/;
+ $space=$Apache::lonxml::alltags{$tag}[-1]
+ }
+
+ my $deleted=0;
+ if (($token->[0] eq 'S') && ($target eq 'modified')) {
+ $deleted=&Apache::edit::handle_delete($space,$target,$token,$tagstack,
+ $parstack,$parser,$safeeval,
+ $style);
+ }
+ if (!$deleted) {
+ if ($space) {
+ #&Apache::lonxml::debug("Calling sub $sub in $space $metamode");
+ $sub1="$space\:\:$sub";
+ ($currentstring,$nodefault) = &$sub1($target,$token,$tagstack,
+ $parstack,$parser,$safeeval,
+ $style);
} else {
- $currentstring = $token->[2];
+ if ($target eq 'tex') {
+ # throw away tag name
+ return '';
+ }
+ #&Apache::lonxml::debug("NOT Calling sub $sub in $space $metamode");
+ if ($metamode <1) {
+ if (defined($token->[4]) && ($metamode < 1)) {
+ $currentstring = $token->[4];
+ } else {
+ $currentstring = $token->[2];
+ }
+ }
+ }
+ # &Apache::lonxml::debug("nodefalt:$nodefault:");
+ if ($currentstring eq '' && $nodefault eq '') {
+ if ($target eq 'edit') {
+ #&Apache::lonxml::debug("doing default edit for $token->[1]");
+ if ($token->[0] eq 'S') {
+ $currentstring = &Apache::edit::tag_start($target,$token);
+ } elsif ($token->[0] eq 'E') {
+ $currentstring = &Apache::edit::tag_end($target,$token);
+ }
+ }
+ }
+ if ($target eq 'modified' && $nodefault eq '') {
+ if ($currentstring eq '') {
+ if ($token->[0] eq 'S') {
+ $currentstring = $token->[4];
+ } elsif ($token->[0] eq 'E') {
+ $currentstring = $token->[2];
+ } else {
+ $currentstring = $token->[2];
+ }
+ }
+ if ($token->[0] eq 'S') {
+ $currentstring.=&Apache::edit::handle_insert();
+ } elsif ($token->[0] eq 'E') {
+ $currentstring.=&Apache::edit::handle_insertafter($token->[1]);
+ }
}
}
use strict 'refs';
@@ -174,16 +591,2013 @@ sub callsub {
return $currentstring;
}
-sub parstring {
+{
+ my %state;
+
+ sub init_state {
+ undef(%state);
+ }
+
+ sub set_state {
+ my ($key,$value) = @_;
+ $state{$key} = $value;
+ return $value;
+ }
+ sub get_state {
+ my ($key) = @_;
+ return $state{$key};
+ }
+}
+
+sub setup_globals {
+ my ($request,$target)=@_;
+ $Apache::lonxml::request=$request;
+ $errorcount=0;
+ $warningcount=0;
+ $Apache::lonxml::internal_error=0;
+ $Apache::lonxml::default_homework_loaded=0;
+ $Apache::lonxml::usestyle=1;
+ &init_counter();
+ &clear_bubble_lines_for_part();
+ &init_state();
+ &set_state('target',$target);
+ @Apache::lonxml::pwd=();
+ @Apache::lonxml::extlinks=();
+ @script_var_displays=();
+ @Apache::lonxml::ssi_info=();
+ $Apache::lonxml::post_evaluate=1;
+ $Apache::lonxml::warnings_error_header='';
+ $Apache::lonxml::substitute_LaTeX_symbols = 1;
+ if ($target eq 'meta') {
+ $Apache::lonxml::redirection = 0;
+ $Apache::lonxml::metamode = 1;
+ $Apache::lonxml::evaluate = 1;
+ $Apache::lonxml::import = 0;
+ } elsif ($target eq 'answer') {
+ $Apache::lonxml::redirection = 0;
+ $Apache::lonxml::metamode = 1;
+ $Apache::lonxml::evaluate = 1;
+ $Apache::lonxml::import = 1;
+ } elsif ($target eq 'grade') {
+ &startredirection(); #ended in inner_xmlparse on exit
+ $Apache::lonxml::metamode = 0;
+ $Apache::lonxml::evaluate = 1;
+ $Apache::lonxml::import = 1;
+ } elsif ($target eq 'modified') {
+ $Apache::lonxml::redirection = 0;
+ $Apache::lonxml::metamode = 0;
+ $Apache::lonxml::evaluate = 0;
+ $Apache::lonxml::import = 0;
+ } elsif ($target eq 'edit') {
+ $Apache::lonxml::redirection = 0;
+ $Apache::lonxml::metamode = 0;
+ $Apache::lonxml::evaluate = 0;
+ $Apache::lonxml::import = 0;
+ } elsif ($target eq 'analyze') {
+ $Apache::lonxml::redirection = 0;
+ $Apache::lonxml::metamode = 0;
+ $Apache::lonxml::evaluate = 1;
+ $Apache::lonxml::import = 1;
+ } else {
+ $Apache::lonxml::redirection = 0;
+ $Apache::lonxml::metamode = 0;
+ $Apache::lonxml::evaluate = 1;
+ $Apache::lonxml::import = 1;
+ }
+}
+
+sub init_safespace {
+ my ($target,$safeeval,$safehole,$safeinit) = @_;
+ $safeeval->reval('use LaTeX::Table;');
+ $safeeval->deny_only(':dangerous');
+ $safeeval->reval('use LONCAPA::LCMathComplex;');
+ $safeeval->permit_only(":default");
+ $safeeval->permit("entereval");
+ $safeeval->permit("hintseval");
+ $safeeval->permit(":base_math");
+ $safeeval->permit("sort");
+ $safeeval->permit("time");
+ $safeeval->permit("caller");
+ $safeeval->deny("rand");
+ $safeeval->deny("srand");
+ $safeeval->deny(":base_io");
+ $safehole->wrap(\&Apache::scripttag::xmlparse,$safeeval,'&xmlparse');
+ $safehole->wrap(\&Apache::outputtags::multipart,$safeeval,'&multipart');
+ $safehole->wrap(\&Apache::lonnet::EXT,$safeeval,'&EXT');
+ $safehole->wrap(\&Apache::chemresponse::chem_standard_order,$safeeval,
+ '&chem_standard_order');
+ $safehole->wrap(\&Apache::response::check_status,$safeeval,'&check_status');
+ $safehole->wrap(\&Apache::response::implicit_multiplication,$safeeval,'&implicit_multiplication');
+
+ $safehole->wrap(\&Apache::lonmaxima::maxima_eval,$safeeval,'&maxima_eval');
+ $safehole->wrap(\&Apache::lonmaxima::maxima_check,$safeeval,'&maxima_check');
+ $safehole->wrap(\&Apache::lonmaxima::maxima_cas_formula_fix,$safeeval,
+ '&maxima_cas_formula_fix');
+
+ $safehole->wrap(\&Apache::lonr::r_eval,$safeeval,'&r_eval');
+ $safehole->wrap(\&Apache::lonr::Rentry,$safeeval,'&Rentry');
+ $safehole->wrap(\&Apache::lonr::Rarray,$safeeval,'&Rarray');
+ $safehole->wrap(\&Apache::lonr::r_check,$safeeval,'&r_check');
+ $safehole->wrap(\&Apache::lonr::r_cas_formula_fix,$safeeval,
+ '&r_cas_formula_fix');
+
+ $safehole->wrap(\&Apache::caparesponse::capa_formula_fix,$safeeval,
+ '&capa_formula_fix');
+
+ $safehole->wrap(\&Apache::lonlocal::locallocaltime,$safeeval,
+ '&locallocaltime');
+
+ $safehole->wrap(\&Math::Cephes::asin,$safeeval,'&asin');
+ $safehole->wrap(\&Math::Cephes::acos,$safeeval,'&acos');
+ $safehole->wrap(\&Math::Cephes::atan,$safeeval,'&atan');
+ $safehole->wrap(\&Math::Cephes::sinh,$safeeval,'&sinh');
+ $safehole->wrap(\&Math::Cephes::cosh,$safeeval,'&cosh');
+ $safehole->wrap(\&Math::Cephes::tanh,$safeeval,'&tanh');
+ $safehole->wrap(\&Math::Cephes::asinh,$safeeval,'&asinh');
+ $safehole->wrap(\&Math::Cephes::acosh,$safeeval,'&acosh');
+ $safehole->wrap(\&Math::Cephes::atanh,$safeeval,'&atanh');
+ $safehole->wrap(\&Math::Cephes::erf,$safeeval,'&erf');
+ $safehole->wrap(\&Math::Cephes::erfc,$safeeval,'&erfc');
+ $safehole->wrap(\&Math::Cephes::j0,$safeeval,'&j0');
+ $safehole->wrap(\&Math::Cephes::j1,$safeeval,'&j1');
+ $safehole->wrap(\&Math::Cephes::jn,$safeeval,'&jn');
+ $safehole->wrap(\&Math::Cephes::jv,$safeeval,'&jv');
+ $safehole->wrap(\&Math::Cephes::y0,$safeeval,'&y0');
+ $safehole->wrap(\&Math::Cephes::y1,$safeeval,'&y1');
+ $safehole->wrap(\&Math::Cephes::yn,$safeeval,'&yn');
+ $safehole->wrap(\&Math::Cephes::yv,$safeeval,'&yv');
+
+ $safehole->wrap(\&Math::Cephes::bdtr ,$safeeval,'&bdtr' );
+ $safehole->wrap(\&Math::Cephes::bdtrc ,$safeeval,'&bdtrc' );
+ $safehole->wrap(\&Math::Cephes::bdtri ,$safeeval,'&bdtri' );
+ $safehole->wrap(\&Math::Cephes::btdtr ,$safeeval,'&btdtr' );
+ $safehole->wrap(\&Math::Cephes::chdtr ,$safeeval,'&chdtr' );
+ $safehole->wrap(\&Math::Cephes::chdtrc,$safeeval,'&chdtrc');
+ $safehole->wrap(\&Math::Cephes::chdtri,$safeeval,'&chdtri');
+ $safehole->wrap(\&Math::Cephes::fdtr ,$safeeval,'&fdtr' );
+ $safehole->wrap(\&Math::Cephes::fdtrc ,$safeeval,'&fdtrc' );
+ $safehole->wrap(\&Math::Cephes::fdtri ,$safeeval,'&fdtri' );
+ $safehole->wrap(\&Math::Cephes::gdtr ,$safeeval,'&gdtr' );
+ $safehole->wrap(\&Math::Cephes::gdtrc ,$safeeval,'&gdtrc' );
+ $safehole->wrap(\&Math::Cephes::nbdtr ,$safeeval,'&nbdtr' );
+ $safehole->wrap(\&Math::Cephes::nbdtrc,$safeeval,'&nbdtrc');
+ $safehole->wrap(\&Math::Cephes::nbdtri,$safeeval,'&nbdtri');
+ $safehole->wrap(\&Math::Cephes::ndtr ,$safeeval,'&ndtr' );
+ $safehole->wrap(\&Math::Cephes::ndtri ,$safeeval,'&ndtri' );
+ $safehole->wrap(\&Math::Cephes::pdtr ,$safeeval,'&pdtr' );
+ $safehole->wrap(\&Math::Cephes::pdtrc ,$safeeval,'&pdtrc' );
+ $safehole->wrap(\&Math::Cephes::pdtri ,$safeeval,'&pdtri' );
+ $safehole->wrap(\&Math::Cephes::stdtr ,$safeeval,'&stdtr' );
+ $safehole->wrap(\&Math::Cephes::stdtri,$safeeval,'&stdtri');
+
+ $safehole->wrap(\&Math::Cephes::Matrix::mat,$safeeval,'&mat');
+ $safehole->wrap(\&Math::Cephes::Matrix::new,$safeeval,
+ '&Math::Cephes::Matrix::new');
+ $safehole->wrap(\&Math::Cephes::Matrix::coef,$safeeval,
+ '&Math::Cephes::Matrix::coef');
+ $safehole->wrap(\&Math::Cephes::Matrix::clr,$safeeval,
+ '&Math::Cephes::Matrix::clr');
+ $safehole->wrap(\&Math::Cephes::Matrix::add,$safeeval,
+ '&Math::Cephes::Matrix::add');
+ $safehole->wrap(\&Math::Cephes::Matrix::sub,$safeeval,
+ '&Math::Cephes::Matrix::sub');
+ $safehole->wrap(\&Math::Cephes::Matrix::mul,$safeeval,
+ '&Math::Cephes::Matrix::mul');
+ $safehole->wrap(\&Math::Cephes::Matrix::div,$safeeval,
+ '&Math::Cephes::Matrix::div');
+ $safehole->wrap(\&Math::Cephes::Matrix::inv,$safeeval,
+ '&Math::Cephes::Matrix::inv');
+ $safehole->wrap(\&Math::Cephes::Matrix::transp,$safeeval,
+ '&Math::Cephes::Matrix::transp');
+ $safehole->wrap(\&Math::Cephes::Matrix::simq,$safeeval,
+ '&Math::Cephes::Matrix::simq');
+ $safehole->wrap(\&Math::Cephes::Matrix::mat_to_vec,$safeeval,
+ '&Math::Cephes::Matrix::mat_to_vec');
+ $safehole->wrap(\&Math::Cephes::Matrix::vec_to_mat,$safeeval,
+ '&Math::Cephes::Matrix::vec_to_mat');
+ $safehole->wrap(\&Math::Cephes::Matrix::check,$safeeval,
+ '&Math::Cephes::Matrix::check');
+ $safehole->wrap(\&Math::Cephes::Matrix::check,$safeeval,
+ '&Math::Cephes::Matrix::check');
+
+# $safehole->wrap(\&Math::Cephes::new_fract,$safeeval,'&new_fract');
+# $safehole->wrap(\&Math::Cephes::radd,$safeeval,'&radd');
+# $safehole->wrap(\&Math::Cephes::rsub,$safeeval,'&rsub');
+# $safehole->wrap(\&Math::Cephes::rmul,$safeeval,'&rmul');
+# $safehole->wrap(\&Math::Cephes::rdiv,$safeeval,'&rdiv');
+# $safehole->wrap(\&Math::Cephes::euclid,$safeeval,'&euclid');
+
+ $safehole->wrap(\&Math::Random::random_beta,$safeeval,'&math_random_beta');
+ $safehole->wrap(\&Math::Random::random_chi_square,$safeeval,'&math_random_chi_square');
+ $safehole->wrap(\&Math::Random::random_exponential,$safeeval,'&math_random_exponential');
+ $safehole->wrap(\&Math::Random::random_f,$safeeval,'&math_random_f');
+ $safehole->wrap(\&Math::Random::random_gamma,$safeeval,'&math_random_gamma');
+ $safehole->wrap(\&Math::Random::random_multivariate_normal,$safeeval,'&math_random_multivariate_normal');
+ $safehole->wrap(\&Math::Random::random_multinomial,$safeeval,'&math_random_multinomial');
+ $safehole->wrap(\&Math::Random::random_noncentral_chi_square,$safeeval,'&math_random_noncentral_chi_square');
+ $safehole->wrap(\&Math::Random::random_noncentral_f,$safeeval,'&math_random_noncentral_f');
+ $safehole->wrap(\&Math::Random::random_normal,$safeeval,'&math_random_normal');
+ $safehole->wrap(\&Math::Random::random_permutation,$safeeval,'&math_random_permutation');
+ $safehole->wrap(\&Math::Random::random_permuted_index,$safeeval,'&math_random_permuted_index');
+ $safehole->wrap(\&Math::Random::random_uniform,$safeeval,'&math_random_uniform');
+ $safehole->wrap(\&Math::Random::random_poisson,$safeeval,'&math_random_poisson');
+ $safehole->wrap(\&Math::Random::random_uniform_integer,$safeeval,'&math_random_uniform_integer');
+ $safehole->wrap(\&Math::Random::random_negative_binomial,$safeeval,'&math_random_negative_binomial');
+ $safehole->wrap(\&Math::Random::random_binomial,$safeeval,'&math_random_binomial');
+ $safehole->wrap(\&Math::Random::random_seed_from_phrase,$safeeval,'&random_seed_from_phrase');
+ $safehole->wrap(\&Math::Random::random_set_seed_from_phrase,$safeeval,'&random_set_seed_from_phrase');
+ $safehole->wrap(\&Math::Random::random_get_seed,$safeeval,'&random_get_seed');
+ $safehole->wrap(\&Math::Random::random_set_seed,$safeeval,'&random_set_seed');
+ $safehole->wrap(\&Apache::loncommon::languages,$safeeval,'&languages');
+ $safehole->wrap(\&Apache::lonxml::error,$safeeval,'&LONCAPA_INTERNAL_ERROR');
+ $safehole->wrap(\&Apache::lonxml::debug,$safeeval,'&LONCAPA_INTERNAL_DEBUG');
+ $safehole->wrap(\&Apache::lonnet::logthis,$safeeval,'&LONCAPA_INTERNAL_LOGTHIS');
+ $safehole->wrap(\&Apache::inputtags::finalizeawards,$safeeval,'&LONCAPA_INTERNAL_FINALIZEAWARDS');
+ $safehole->wrap(\&Apache::caparesponse::get_sigrange,$safeeval,'&LONCAPA_INTERNAL_get_sigrange');
+ $safehole->wrap(\&Apache::functionplotresponse::fpr_val,$safeeval,'&fpr_val');
+ $safehole->wrap(\&Apache::functionplotresponse::fpr_f,$safeeval,'&fpr_f');
+ $safehole->wrap(\&Apache::functionplotresponse::fpr_dfdx,$safeeval,'&fpr_dfdx');
+ $safehole->wrap(\&Apache::functionplotresponse::fpr_d2fdx2,$safeeval,'&fpr_d2fdx2');
+ $safehole->wrap(\&Apache::functionplotresponse::fpr_vectorcoords,$safeeval,'&fpr_vectorcoords');
+ $safehole->wrap(\&Apache::functionplotresponse::fpr_objectcoords,$safeeval,'&fpr_objectcoords');
+ $safehole->wrap(\&Apache::functionplotresponse::fpr_vectorlength,$safeeval,'&fpr_vectorlength');
+ $safehole->wrap(\&Apache::functionplotresponse::fpr_vectorangle,$safeeval,'&fpr_vectorangle');
+ $safehole->wrap(\&Math::Calculus::Expression::math_calculus_expression,$safeeval,'&math_calculus_expression');
+ $safehole->wrap(\&Number::FormatEng::format_eng,$safeeval,'&number_format_eng');
+ $safehole->wrap(\&Number::FormatEng::format_pref,$safeeval,'&number_format_pref');
+
+# use Data::Dumper;
+# $safehole->wrap(\&Data::Dumper::Dumper,$safeeval,'&LONCAPA_INTERNAL_Dumper');
+#need to inspect this class of ops
+# $safeeval->deny(":base_orig");
+ $safeeval->permit("require");
+ $safeinit .= ';$external::target="'.$target.'";';
+ &Apache::run::run($safeinit,$safeeval);
+ my $rawrndseed = &initialize_rndseed($safeeval);
+ if ($target eq 'grade') {
+ $Apache::lonhomework::rawrndseed = $rawrndseed;
+ }
+}
+
+sub clean_safespace {
+ my ($safeeval) = @_;
+ delete_package_recurse($safeeval->{Root});
+}
+
+sub delete_package_recurse {
+ my ($package) = @_;
+ my @subp;
+ {
+ no strict 'refs';
+ while (my ($key,$val) = each(%{*{"$package\::"}})) {
+ if (!defined($val)) { next; }
+ local (*ENTRY) = $val;
+ if (defined *ENTRY{HASH} && $key =~ /::$/ &&
+ $key ne "main::" && $key ne "<none>::")
+ {
+ my ($p) = $package ne "main" ? "$package\::" : "";
+ ($p .= $key) =~ s/::$//;
+ push(@subp,$p);
+ }
+ }
+ }
+ foreach my $p (@subp) {
+ delete_package_recurse($p);
+ }
+ Symbol::delete_package($package);
+}
+
+sub initialize_rndseed {
+ my ($safeeval)=@_;
+ my $rndseed;
+ my ($symb,$courseid,$domain,$name) = &Apache::lonnet::whichuser();
+ $rndseed=&Apache::lonnet::rndseed($symb,$courseid,$domain,$name);
+ my $safeinit = '$external::randomseed="'.$rndseed.'";';
+ &Apache::lonxml::debug("Setting rndseed to $rndseed");
+ &Apache::run::run($safeinit,$safeeval);
+ return $rndseed;
+}
+
+sub default_homework_load {
+ my ($safeeval)=@_;
+ &Apache::lonxml::debug('Loading default_homework');
+ my $default=&Apache::lonnet::getfile($Apache::lonnet::perlvar{'lonIncludes'}.
+ '/default_homework.lcpm');
+ if ($default eq -1) {
+ &Apache::lonxml::error("<b>Unable to find <i>default_homework.lcpm</i></b>");
+ } else {
+ &Apache::run::run($default,$safeeval);
+ $Apache::lonxml::default_homework_loaded=1;
+ }
+}
+
+{
+ my $alarm_depth;
+ sub init_alarm {
+ alarm(0);
+ $alarm_depth=0;
+ }
+
+ sub start_alarm {
+ if ($alarm_depth<1) {
+ my $old=alarm($Apache::lonnet::perlvar{'lonScriptTimeout'});
+ if ($old) {
+ &Apache::lonxml::error("Cancelled an alarm of $old, this shouldn't occur.");
+ }
+ }
+ $alarm_depth++;
+ }
+
+ sub end_alarm {
+ $alarm_depth--;
+ if ($alarm_depth<1) { alarm(0); }
+ }
+}
+my $metamode_was;
+sub startredirection {
+ if (!$Apache::lonxml::redirection) {
+ $metamode_was=$Apache::lonxml::metamode;
+ }
+ $Apache::lonxml::metamode=0;
+ $Apache::lonxml::redirection++;
+ push (@Apache::lonxml::outputstack, '');
+}
+
+sub endredirection {
+ if (!$Apache::lonxml::redirection) {
+ &Apache::lonxml::error("Endredirection was called before a startredirection, perhaps you have unbalanced tags. Some debugging information:".join ":",caller);
+ return '';
+ }
+ $Apache::lonxml::redirection--;
+ if (!$Apache::lonxml::redirection) {
+ $Apache::lonxml::metamode=$metamode_was;
+ }
+ pop @Apache::lonxml::outputstack;
+}
+sub in_redirection {
+ return ($Apache::lonxml::redirection > 0)
+}
+
+sub end_tag {
+ my ($tagstack,$parstack,$token)=@_;
+ pop(@$tagstack);
+ pop(@$parstack);
+ &decreasedepth($token);
+}
+
+sub initdepth {
+ @Apache::lonxml::depthcounter=();
+ undef($Apache::lonxml::last_depth_count);
+}
+
+
+my @timers;
+my $lasttime;
+# @Apache::lonxml::depthcounter -> count of tags that exist so
+# far at each level
+# $Apache::lonxml::last_depth_count -> when ascending, need to
+# remember the count for the level below the current level (for
+# example going from 1_2 -> 1 -> 1_3 need to remember the 2 )
+
+sub increasedepth {
my ($token) = @_;
- my $temp='';
- map {$temp .= "my \$$_=\"$token->[2]->{$_}\";"} @{$token->[3]};
- return $temp;
+ push(@Apache::lonxml::depthcounter,$Apache::lonxml::last_depth_count+1);
+ undef($Apache::lonxml::last_depth_count);
+ my $time;
+ if ($Apache::lonxml::debug eq "1") {
+ push(@timers,[&gettimeofday()]);
+ $time=&tv_interval($lasttime);
+ $lasttime=[&gettimeofday()];
+ }
+ my $spacing=' 'x($#Apache::lonxml::depthcounter);
+ $Apache::lonxml::curdepth=join('_',@Apache::lonxml::depthcounter);
+# &Apache::lonxml::debug("s$spacing$Apache::lonxml::depth : $Apache::lonxml::olddepth : $Apache::lonxml::curdepth : $token->[1] : $time");
+#print "<br />s $Apache::lonxml::depth : $Apache::lonxml::olddepth : $curdepth : $token->[1]\n";
+}
+
+sub decreasedepth {
+ my ($token) = @_;
+ if ( $#Apache::lonxml::depthcounter == -1) {
+ &Apache::lonxml::warning(&mt("Missing tags, unable to properly run file."));
+ }
+ $Apache::lonxml::last_depth_count = pop(@Apache::lonxml::depthcounter);
+
+ my ($timer,$time);
+ if ($Apache::lonxml::debug eq "1") {
+ $timer=pop(@timers);
+ $time=&tv_interval($lasttime);
+ $lasttime=[&gettimeofday()];
+ }
+ my $spacing=' 'x($#Apache::lonxml::depthcounter);
+ $Apache::lonxml::curdepth = join('_',@Apache::lonxml::depthcounter);
+# &Apache::lonxml::debug("e$spacing$Apache::lonxml::depth : $Apache::lonxml::olddepth : $Apache::lonxml::curdepth : $token->[1] : $time : ".&tv_interval($timer));
+#print "<br />e $Apache::lonxml::depth : $Apache::lonxml::olddepth : $token->[1] : $curdepth\n";
+}
+
+sub get_id {
+ my ($parstack,$safeeval)=@_;
+ my $id= &Apache::lonxml::get_param('id',$parstack,$safeeval);
+ if ($env{'request.state'} eq 'construct' && $id =~ /([._]|[^\w\s\-])/) {
+ &error(&mt('ID [_1] contains invalid characters. IDs are only allowed to contain letters, numbers, spaces and -','"<tt>'.$id.'</tt>"'));
+ }
+ if ($id =~ /^\s*$/) { $id = $Apache::lonxml::curdepth; }
+ return $id;
+}
+
+sub get_all_text_unbalanced {
+#there is a copy of this in lonpublisher.pm
+ my($tag,$pars)= @_;
+ my $token;
+ my $result='';
+ $tag='<'.$tag.'>';
+ while ($token = $$pars[-1]->get_token) {
+ if (($token->[0] eq 'T')||($token->[0] eq 'C')||($token->[0] eq 'D')) {
+ if ($token->[0] eq 'T' && $token->[2]) {
+ $result.='<![CDATA['.$token->[1].']]>';
+ } else {
+ $result.=$token->[1];
+ }
+ } elsif ($token->[0] eq 'PI') {
+ $result.=$token->[2];
+ } elsif ($token->[0] eq 'S') {
+ $result.=$token->[4];
+ } elsif ($token->[0] eq 'E') {
+ $result.=$token->[2];
+ }
+ if ($result =~ /\Q$tag\E/is) {
+ ($result,my $redo)=$result =~ /(.*)\Q$tag\E(.*)/is;
+ #&Apache::lonxml::debug('Got a winner with leftovers ::'.$2);
+ #&Apache::lonxml::debug('Result is :'.$1);
+ $redo=$tag.$redo;
+ &Apache::lonxml::newparser($pars,\$redo);
+ last;
+ }
+ }
+ return $result
+
+}
+
+#########################################################################
+# #
+# bubble line counter management #
+# #
+#########################################################################
+
+=pod
+
+For bubble grading mode and exam bubble printing mode, the tracking of
+the current 'bubble line number' is stored in the %env element
+'form.counter', and is modifed and handled by the following routines.
+
+The value of it is stored in $Apache:lonxml::counter when live and
+stored back to env after done.
+
+=item &increment_counter($increment, $part_response);
+
+Increments the internal counter environment variable a specified amount
+
+Optional Arguments:
+ $increment - amount to increment by (defaults to 1)
+ Also 1 if the value is negative or zero.
+ $part_response - A concatenation of the part and response id
+ identifying exactly what is being 'answered'.
+
+
+=cut
+
+sub increment_counter {
+ my ($increment, $part_response) = @_;
+ if ($env{'form.grade_noincrement'}) { return; }
+ if (!defined($increment) || $increment le 0) {
+ $increment = 1;
+ }
+ $Apache::lonxml::counter += $increment;
+
+ # If the caller supplied the response_id parameter,
+ # Maintain its counter.. creating if necessary.
+
+ if (defined($part_response)) {
+ if (!defined($Apache::lonxml::counters_per_part{$part_response})) {
+ $Apache::lonxml::counters_per_part{$part_response} = 0;
+ }
+ $Apache::lonxml::counters_per_part{$part_response} += $increment;
+ my $new_value = $Apache::lonxml::counters_per_part{$part_response};
+ }
+
+ $Apache::lonxml::counter_changed=1;
+}
+
+=pod
+
+=item &init_counter($increment);
+
+Initialize the internal counter environment variable
+
+=cut
+
+sub init_counter {
+ if ($env{'request.state'} eq 'construct') {
+ $Apache::lonxml::counter=1;
+ $Apache::lonxml::counter_changed=1;
+ } elsif (defined($env{'form.counter'})) {
+ $Apache::lonxml::counter=$env{'form.counter'};
+ $Apache::lonxml::counter_changed=0;
+ } else {
+ $Apache::lonxml::counter=1;
+ $Apache::lonxml::counter_changed=1;
+ }
+}
+
+sub store_counter {
+ &Apache::lonnet::appenv({'form.counter' => $Apache::lonxml::counter});
+ $Apache::lonxml::counter_changed=0;
+ return '';
+}
+
+{
+ my $state;
+ sub clear_problem_counter {
+ undef($state);
+ &Apache::lonnet::delenv('form.counter');
+ &Apache::lonxml::init_counter();
+ &Apache::lonxml::store_counter();
+ }
+
+ sub remember_problem_counter {
+ &Apache::lonnet::transfer_profile_to_env(undef,undef,1);
+ $state = $env{'form.counter'};
+ }
+
+ sub restore_problem_counter {
+ if (defined($state)) {
+ &Apache::lonnet::appenv({'form.counter' => $state});
+ }
+ }
+ sub get_problem_counter {
+ if ($Apache::lonxml::counter_changed) { &store_counter() }
+ &Apache::lonnet::transfer_profile_to_env(undef,undef,1);
+ return $env{'form.counter'};
+ }
+}
+
+=pod
+
+=item bubble_lines_for_part(part_response)
+
+Returns the number of lines required to get a response for
+$part_response (this is just $Apache::lonxml::counters_per_part{$part_response}
+
+=cut
+
+sub bubble_lines_for_part {
+ my ($part_response) = @_;
+
+ if (!defined($Apache::lonxml::counters_per_part{$part_response})) {
+ return 0;
+ } else {
+ return $Apache::lonxml::counters_per_part{$part_response};
+ }
+}
+
+=pod
+
+=item clear_bubble_lines_for_part
+
+Clears the hash of bubble lines per part. If a caller
+needs to analyze several resources this should be called between
+resources to reset the hash for each problem being analyzed.
+
+=cut
+
+sub clear_bubble_lines_for_part {
+ undef(%Apache::lonxml::counters_per_part);
+}
+
+=pod
+
+=item set_bubble_lines(part_response, value)
+
+If there is a problem part, that for whatever reason
+requires bubble lines that are not
+the same as the counter increment, it can call this sub during
+analysis to set its hash value explicitly.
+
+=cut
+
+sub set_bubble_lines {
+ my ($part_response, $value) = @_;
+
+ $Apache::lonxml::counters_per_part{$part_response} = $value;
+}
+
+=pod
+
+=item get_bubble_line_hash
+
+Returns the current bubble line hash. This is assumed to
+be small so we return a copy
+
+
+=cut
+
+sub get_bubble_line_hash {
+ return %Apache::lonxml::counters_per_part;
+}
+
+
+#--------------------------------------------------
+
+sub get_all_text {
+ my($tag,$pars,$style)= @_;
+ my $gotfullstack=1;
+ if (ref($pars) ne 'ARRAY') {
+ $gotfullstack=0;
+ $pars=[$pars];
+ }
+ if (ref($style) ne 'HASH') {
+ $style={};
+ }
+ my $depth=0;
+ my $token;
+ my $result='';
+ if ( $tag =~ m:^/: ) {
+ my $tag=substr($tag,1);
+ #&Apache::lonxml::debug("have:$tag:");
+ my $top_empty=0;
+ while (($depth >=0) && ($#$pars > -1) && (!$top_empty)) {
+ while (($depth >=0) && ($token = $$pars[-1]->get_token)) {
+ #&Apache::lonxml::debug("e token:$token->[0]:$depth:$token->[1]:".$#$pars.":".$#Apache::lonxml::pwd);
+ if (($token->[0] eq 'T')||($token->[0] eq 'C')||($token->[0] eq 'D')) {
+ if ($token->[2]) {
+ $result.='<![CDATA['.$token->[1].']]>';
+ } else {
+ $result.=$token->[1];
+ }
+ } elsif ($token->[0] eq 'PI') {
+ $result.=$token->[2];
+ } elsif ($token->[0] eq 'S') {
+ if ($token->[1] =~ /^\Q$tag\E$/i) { $depth++; }
+ if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_ON$/) { $Apache::lonxml::usestyle=1; }
+ if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_OFF$/) { $Apache::lonxml::usestyle=0; }
+ $result.=$token->[4];
+ } elsif ($token->[0] eq 'E') {
+ if ( $token->[1] =~ /^\Q$tag\E$/i) { $depth--; }
+ #skip sending back the last end tag
+ if ($depth == 0 && exists($$style{'/'.$token->[1]}) && $Apache::lonxml::usestyle) {
+ my $string=
+ '<LONCAPA_INTERNAL_TURN_STYLE_OFF end="yes" />'.
+ $$style{'/'.$token->[1]}.
+ $token->[2].
+ '<LONCAPA_INTERNAL_TURN_STYLE_ON />';
+ &Apache::lonxml::newparser($pars,\$string);
+ #&Apache::lonxml::debug("reParsing $string");
+ next;
+ }
+ if ($depth > -1) {
+ $result.=$token->[2];
+ } else {
+ $$pars[-1]->unget_token($token);
+ }
+ }
+ }
+ if (($depth >=0) && ($#$pars == 0) ) { $top_empty=1; }
+ if (($depth >=0) && ($#$pars > 0) ) {
+ pop(@$pars);
+ pop(@Apache::lonxml::pwd);
+ }
+ }
+ if ($top_empty && $depth >= 0) {
+ #never found the end tag ran out of text, throw error send back blank
+ &error('Never found end tag for <'.$tag.
+ '> current string <pre>'.
+ &HTML::Entities::encode($result,'<>&"').
+ '</pre>');
+ if ($gotfullstack) {
+ my $newstring='</'.$tag.'>'.$result;
+ &Apache::lonxml::newparser($pars,\$newstring);
+ }
+ $result='';
+ }
+ } else {
+ while ($#$pars > -1) {
+ while ($token = $$pars[-1]->get_token) {
+ #&Apache::lonxml::debug("s token:$token->[0]:$depth:$token->[1]");
+ if (($token->[0] eq 'T')||($token->[0] eq 'C')||
+ ($token->[0] eq 'D')) {
+ if ($token->[2]) {
+ $result.='<![CDATA['.$token->[1].']]>';
+ } else {
+ $result.=$token->[1];
+ }
+ } elsif ($token->[0] eq 'PI') {
+ $result.=$token->[2];
+ } elsif ($token->[0] eq 'S') {
+ if ( $token->[1] =~ /^\Q$tag\E$/i) {
+ $$pars[-1]->unget_token($token); last;
+ } else {
+ $result.=$token->[4];
+ }
+ if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_ON$/) { $Apache::lonxml::usestyle=1; }
+ if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_OFF$/) { $Apache::lonxml::usestyle=0; }
+ } elsif ($token->[0] eq 'E') {
+ $result.=$token->[2];
+ }
+ }
+ if (($#$pars > 0) ) {
+ pop(@$pars);
+ pop(@Apache::lonxml::pwd);
+ } else { last; }
+ }
+ }
+ #&Apache::lonxml::debug("Exit:$result:");
+ return $result
+}
+
+sub newparser {
+ my ($parser,$contentref,$dir) = @_;
+ push (@$parser,HTML::LCParser->new($contentref));
+ $$parser[-1]->xml_mode(1);
+ $$parser[-1]->marked_sections(1);
+ if ( $dir eq '' ) {
+ push (@Apache::lonxml::pwd, $Apache::lonxml::pwd[$#Apache::lonxml::pwd]);
+ } else {
+ push (@Apache::lonxml::pwd, $dir);
+ }
+}
+
+sub parstring {
+ my ($token) = @_;
+ my (@vars,@values);
+ foreach my $attr (@{$token->[3]}) {
+ if ($attr!~/\W/) {
+ my $val=$token->[2]->{$attr};
+ $val =~ s/([\%\@\\\"\'])/\\$1/g;
+ $val =~ s/(\$[^\{a-zA-Z_])/\\$1/g;
+ $val =~ s/(\$)$/\\$1/;
+ #if ($val =~ m/^[\%\@]/) { $val="\\".$val; }
+ push(@vars,"\$$attr");
+ push(@values,"\"$val\"");
+ }
+ }
+ my $var_init =
+ (@vars) ? 'my ('.join(',',@vars).') = ('.join(',',@values).');'
+ : '';
+ return $var_init;
+}
+
+sub extlink {
+ my ($res,$exact)=@_;
+ if (!$exact) {
+ $res=&Apache::lonnet::hreflocation($Apache::lonxml::pwd[-1],$res);
+ }
+ push(@Apache::lonxml::extlinks,$res);
+}
+
+sub writeallows {
+ unless ($#extlinks>=0) { return; }
+ my $thisurl = &Apache::lonnet::clutter(shift);
+ if ($env{'httpref.'.$thisurl}) {
+ $thisurl=$env{'httpref.'.$thisurl};
+ }
+ my $thisdir=$thisurl;
+ $thisdir=~s/\/[^\/]+$//;
+ my %httpref=();
+ foreach (@extlinks) {
+ $httpref{'httpref.'.
+ &Apache::lonnet::hreflocation($thisdir,&unescape($_))}=$thisurl;
+ }
+ @extlinks=();
+ &Apache::lonnet::appenv(\%httpref);
+}
+
+sub register_ssi {
+ my ($url,%form)=@_;
+ push (@Apache::lonxml::ssi_info,{'url'=>$url,'form'=>\%form});
+ return '';
+}
+
+sub do_registered_ssi {
+ foreach my $info (@Apache::lonxml::ssi_info) {
+ my %form=%{ $info->{'form'}};
+ my $url=$info->{'url'};
+ &Apache::lonnet::ssi($url,%form);
+ }
+}
+
+sub add_script_result {
+ my ($display) = @_;
+ if ($display ne '') {
+ push(@script_var_displays, $display);
+ }
}
-1;
-__END__
+#
+# Afterburner handles anchors, highlights and links
+#
+sub afterburn {
+ my $result=shift;
+ &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
+ ['highlight','anchor','link']);
+ if ($env{'form.highlight'}) {
+ foreach (split(/\,/,$env{'form.highlight'})) {
+ my $anchorname=$_;
+ my $matchthis=$anchorname;
+ $matchthis=~s/\_+/\\s\+/g;
+ $result=~s/(\Q$matchthis\E)/\<font color=\"red\"\>$1\<\/font\>/gs;
+ }
+ }
+ if ($env{'form.link'}) {
+ foreach (split(/\,/,$env{'form.link'})) {
+ my ($anchorname,$linkurl)=split(/\>/,$_);
+ my $matchthis=$anchorname;
+ $matchthis=~s/\_+/\\s\+/g;
+ $result=~s/(\Q$matchthis\E)/\<a href=\"$linkurl\"\>$1\<\/a\>/gs;
+ }
+ }
+ if ($env{'form.anchor'}) {
+ my $anchorname=$env{'form.anchor'};
+ my $matchthis=$anchorname;
+ $matchthis=~s/\_+/\\s\+/g;
+ $result=~s/(\Q$matchthis\E)/\<a name=\"$anchorname\"\>$1\<\/a\>/s;
+ $result.=(<<"ENDSCRIPT");
+<script type="text/javascript">
+ document.location.hash='$anchorname';
+</script>
+ENDSCRIPT
+ }
+ return $result;
+}
+
+sub storefile {
+ my ($file,$contents)=@_;
+ &Apache::lonnet::correct_line_ends(\$contents);
+ if (my $fh=Apache::File->new('>'.$file)) {
+ print $fh $contents;
+ $fh->close();
+ return 1;
+ } else {
+ &warning(&mt('Unable to save file [_1]','<tt>'.$file.'</tt>'));
+ return 0;
+ }
+}
+
+sub createnewhtml {
+ my $title=&mt('Title of document goes here');
+ my $body=&mt('Body of document goes here');
+ my $filecontents=(<<SIMPLECONTENT);
+<html>
+<head>
+<title>$title</title>
+</head>
+<body bgcolor="#FFFFFF">
+$body
+</body>
+</html>
+SIMPLECONTENT
+ return $filecontents;
+}
+sub createnewsty {
+ my $filecontents=(<<SIMPLECONTENT);
+<definetag name="">
+ <render>
+ <web></web>
+ <tex></tex>
+ </render>
+</definetag>
+SIMPLECONTENT
+ return $filecontents;
+}
+sub createnewjs {
+ my $filecontents=(<<SIMPLECONTENT);
+<script type="text/javascript" language="Javascript">
+</script>
+SIMPLECONTENT
+ return $filecontents;
+}
+
+sub verify_html {
+ my ($filecontents)=@_;
+ my ($is_html,$is_xml,$is_physnet);
+ if ($filecontents =~/(?:\<|\<\;)\?xml[^\<]*\?(?:\>|\>\;)/is) {
+ $is_xml = 1;
+ } elsif ($filecontents =~/(?:\<|\<\;)html(?:\s+[^\<]+|\s*)(?:\>|\>\;)/is) {
+ $is_html = 1;
+ } elsif ($filecontents =~/(?:\<|\<\;)physnet[^\<]*(?:\>|\>\;)/is) {
+ $is_physnet = 1;
+ }
+ unless ($is_xml || $is_html || $is_physnet) {
+ return &mt('File does not have [_1] or [_2] starting tag','<html>','<?xml ?>');
+ }
+ if ($is_html) {
+ if ($filecontents!~/(?:\<|\<\;)\/html(?:\>|\>\;)/is) {
+ return &mt('File does not have [_1] ending tag','<html>');
+ }
+ if ($filecontents!~/(?:\<|\<\;)(?:body|frameset)[^\<]*(?:\>|\>\;)/is) {
+ return &mt('File does not have [_1] or [_2] starting tag','<body>','<frameset>');
+ }
+ if ($filecontents!~/(?:\<|\<\;)\/(?:body|frameset)[^\<]*(?:\>|\>\;)/is) {
+ return &mt('File does not have [_1] or [_2] ending tag','<body>','<frameset>');
+ }
+ }
+ return '';
+}
+
+sub renderingoptions {
+ my %langchoices=('' => '');
+ foreach (&Apache::loncommon::languageids()) {
+ if (&Apache::loncommon::supportedlanguagecode($_)) {
+ $langchoices{&Apache::loncommon::supportedlanguagecode($_)}
+ = &Apache::loncommon::plainlanguagedescription($_);
+ }
+ }
+ my $output;
+ unless ($env{'form.forceedit'}) {
+ $output .=
+ '<span class="LC_nobreak">'.
+ &mt('Language:').' '.
+ &Apache::loncommon::select_form(
+ $env{'form.languages'},
+ 'languages',
+ {&Apache::lonlocal::texthash(%langchoices)}).
+ '</span>';
+ }
+ $output .=
+ ' <span class="LC_nobreak">'.
+ &mt('Math Rendering:').' '.
+ &Apache::loncommon::select_form(
+ $env{'form.texengine'},
+ 'texengine',
+ {&Apache::lonlocal::texthash
+ ('' => '',
+ 'tth' => 'tth (TeX to HTML)',
+ 'MathJax' => 'MathJax',
+ 'mimetex' => 'mimetex (Convert to Images)')}).
+ '</span>';
+ return $output;
+}
+
+sub inserteditinfo {
+ my ($filecontents,$filetype,$filename,$symb,$itemtitle,$folderpath,$uri,$action) = @_;
+ $filecontents = &HTML::Entities::encode($filecontents,'<>&"');
+ my $xml_help = '';
+ my $initialize='';
+ my $textarea_id = 'filecont';
+ my ($dragmath_button,$deps_button,$context,$cnum,$cdom,$add_to_onload,
+ $add_to_onresize,$init_dragmath);
+ $initialize=&Apache::lonhtmlcommon::spellheader();
+ if ($filetype eq 'html') {
+ if ($env{'request.course.id'}) {
+ $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
+ $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
+ if ($uri =~ m{^\Q/uploaded/$cdom/$cnum/portfolio/syllabus/\E}) {
+ $context = 'syllabus';
+ }
+ }
+ if (&Apache::lonhtmlcommon::htmlareabrowser()) {
+ my $lang = &Apache::lonhtmlcommon::htmlarea_lang();
+ my %textarea_args = (
+ fullpage => 'true',
+ dragmath => 'math',
+ );
+ $initialize .= &Apache::lonhtmlcommon::htmlareaselectactive(\%textarea_args);
+ if ($context eq 'syllabus') {
+ $init_dragmath = "editmath_visibility('filecont','none')";
+ }
+ }
+ }
+ $initialize .= (<<FULLPAGE);
+<script type="text/javascript">
+// <![CDATA[
+ function initDocument() {
+ resize_textarea('$textarea_id','LC_aftertextarea');
+ $init_dragmath
+ }
+// ]]>
+</script>
+FULLPAGE
+ my $textareaclass;
+ if ($filetype eq 'html') {
+ if ($context eq 'syllabus') {
+ $deps_button = &Apache::lonhtmlcommon::dependencies_button()."\n";
+ $initialize .=
+ &Apache::lonhtmlcommon::dependencycheck_js(undef,&mt('Syllabus'),
+ $uri,undef,
+ "/public/$cdom/$cnum/syllabus").
+ "\n";
+ if (&Apache::lonhtmlcommon::htmlareabrowser()) {
+ $textareaclass = 'class="LC_richDefaultOn"';
+ }
+ } elsif ($symb || $folderpath) {
+ $deps_button = &Apache::lonhtmlcommon::dependencies_button()."\n";
+ $initialize .=
+ &Apache::lonhtmlcommon::dependencycheck_js($symb,$itemtitle,
+ undef,$folderpath,$uri)."\n";
+ }
+ $dragmath_button = '<span id="math_filecont">'.&Apache::lonhtmlcommon::dragmath_button('filecont',1).'</span>';
+ $initialize .= "\n".&Apache::lonhtmlcommon::dragmath_js('EditMathPopup');
+ }
+ $add_to_onload = 'initDocument();';
+ $add_to_onresize = "resize_textarea('$textarea_id','LC_aftertextarea');";
+
+ if ($filetype eq 'html') {
+ my $not_author;
+ if ($uri =~ m{^/uploaded/}) {
+ $not_author = 1;
+ }
+ $xml_help=&Apache::loncommon::helpLatexCheatsheet(undef,undef,$not_author);
+ }
+
+ my $titledisplay=&display_title();
+ my %lt=&Apache::lonlocal::texthash('st' => 'Save and Edit',
+ 'vi' => 'Save and View',
+ 'dv' => 'Discard Edits and View',
+ 'un' => 'Undo',
+ 'ed' => 'Edit',
+ 'ew' => 'Edit with Daxe',
+ 'er' => 'Editor');
+ my $spelllink = &Apache::lonhtmlcommon::spelllink('xmledit','filecont');
+ my $textarea_events = &Apache::edit::element_change_detection();
+ my $form_events = &Apache::edit::form_change_detection();
+ my $htmlerror;
+ if ($filetype eq 'html') {
+ $htmlerror=&verify_html($filecontents);
+ if ($htmlerror) {
+ $htmlerror=(' 'x3).' <span class="LC_error">'.$htmlerror.'</span>';
+ }
+ if (&Apache::lonhtmlcommon::htmlareabrowser()) {
+ unless ($textareaclass) {
+ $textareaclass = 'class="LC_richDefaultOff"';
+ }
+ }
+ }
+ my ($undo,$daxebutton,%onclick);
+ foreach my $item ('discard','undo','daxe') {
+ $onclick{$item} = 'onclick="still_ask=true;setmode(this.form,'."'$item'".')"';
+ }
+ foreach my $item ('saveedit','saveview') {
+ $onclick{$item} = 'onclick="is_submit=true;setmode(this.form,'."'$item'".')"';
+ }
+ unless ($uri =~ m{^/uploaded/}) {
+ $undo = '<input type="button" name="undo" accesskey="u" value="'.$lt{'un'}.'" '.
+ $onclick{'undo'}.' />'."\n";
+ }
+ $initialize .= &setmode_javascript();
+ if ($filetype eq 'html') {
+ my %editors = &Apache::loncommon::permitted_editors($uri);
+ if ($editors{'daxe'}) {
+ $daxebutton = '<input type="button" name="editwithdaxe" accesskey="w" value="'.$lt{'ew'}.'" '.
+ $onclick{'daxe'}.' />'."\n";
+ }
+ }
+ my $editfooter=(<<ENDFOOTER);
+$initialize
+<a name="editsection" />
+<form $form_events method="post" name="xmledit" action="$action">
+ <input type="hidden" name="problemmode" value="edit" />
+ <div class="LC_edit_problem_editxml_header">
+ <table class="LC_edit_problem_header_title"><tr><td>
+ $filename
+ </td><td align="right">
+ $xml_help
+ </td></tr>
+ </table>
+ <div style="float:right">
+ <input type="button" name="savethisfile" accesskey="s" value="$lt{'st'}" $onclick{'saveedit'} />
+ <input type="button" name="viewmode" accesskey="v" value="$lt{'vi'}" $onclick{'saveview'} />
+ </div>
+ <div>
+ <input type="button" name="discardview" accesskey="d" value="$lt{'dv'}" $onclick{'discard'} />
+ $undo $deps_button $daxebutton $dragmath_button $htmlerror
+ </div>
+ </div>
+ <textarea $textarea_events style="width:100%" cols="80" rows="44" name="filecont" id="filecont" $textareaclass>$filecontents</textarea><br /><label for="filecont" class="LC_visually_hidden">$lt{'er'}</label>$spelllink
+ <div id="LC_aftertextarea">
+ <br />
+ $titledisplay
+ </div>
+</form>
+ENDFOOTER
+ return ($editfooter,$add_to_onload,$add_to_onresize);
+}
+
+sub setmode_javascript {
+ return <<"ENDSCRIPT";
+<script type="text/javascript">
+// <![CDATA[
+function setmode(form,probmode) {
+ if (probmode == 'daxe') {
+ var url = new URL(document.location.href);
+ window.location = url.protocol+'//'+url.hostname+'/daxepage'+url.pathname;
+ } else {
+ var initial = form.problemmode.value;
+ form.problemmode.value = probmode;
+ form.submit();
+ form.problemmode.value = initial;
+ }
+}
+// ]]>
+</script>
+ENDSCRIPT
+}
+
+sub seteditor_javascript {
+ my ($is_course_doc,$is_supp,$supp_path,$supp_title) = @_;
+ my $symb;
+ if ($is_course_doc) {
+ if (!$is_supp) {
+ ($symb) = &Apache::lonnet::whichuser();
+ if ($symb) {
+ $symb = &escape($symb);
+ }
+ }
+ }
+ return <<"ENDSCRIPT";
+<script type="text/javascript">
+// <![CDATA[
+function seteditmode(form,editor) {
+ var querystr = '';
+ var supplemental = '$is_supp';
+ var coursedoc = '$is_course_doc';
+ if (coursedoc) {
+ if (supplemental) {
+ var supppath = '$supp_path';
+ var supptitle = '$supp_title';
+ if (supppath) {
+ querystr = 'folderpath='+supppath;
+ }
+ if (supptitle) {
+ if (querystr) {
+ querystr += '&';
+ }
+ querystr += 'title='+supptitle;
+ }
+ }
+ }
+ if (editor == 'daxe') {
+ var url = new URL(document.location.href);
+ var newloc = url.protocol+'//'+url.hostname+'/daxepage'+url.pathname;
+ if (querystr) {
+ if (/\\?/.test(url.pathname)) {
+ newloc += '&';
+ } else {
+ newloc += '?';
+ }
+ newloc += querystr;
+ }
+ window.location = newloc;
+ } else {
+ if (coursedoc) {
+ var curraction = form.action;
+ var idx = curraction.indexOf('?');
+ if (idx !== -1) {
+ form.action = curraction.substring(0,idx);
+ }
+ form.action += '?forceedit=1®ister=1';
+ if (querystr) {
+ form.action += '&'+querystr;
+ }
+ }
+ if (editor == 'edit') {
+ form.editmode.value = editor;
+ } else {
+ form.editmode.value = '';
+ }
+ form.submit();
+ }
+}
+// ]]>
+</script>
+ENDSCRIPT
+}
+
+sub get_target {
+ my $viewgrades=&Apache::lonnet::allowed('vgr',$env{'request.course.id'});
+ if ( $env{'request.state'} eq 'published') {
+ if ( defined($env{'form.grade_target'})
+ && ($viewgrades == 'F' )) {
+ return ($env{'form.grade_target'});
+ } elsif (defined($env{'form.grade_target'})) {
+ if (($env{'form.grade_target'} eq 'web') ||
+ ($env{'form.grade_target'} eq 'tex') ) {
+ return $env{'form.grade_target'}
+ } else {
+ return 'web';
+ }
+ } else {
+ return 'web';
+ }
+ } elsif ($env{'request.state'} eq 'construct') {
+ if ( defined($env{'form.grade_target'})) {
+ return ($env{'form.grade_target'});
+ } else {
+ return 'web';
+ }
+ } else {
+ return 'web';
+ }
+}
+
+sub handler {
+ my $request=shift;
+
+ my $target=&get_target();
+ $Apache::lonxml::debug=$env{'user.debug'};
+
+ &Apache::loncommon::content_type($request,'text/html');
+ &Apache::loncommon::no_cache($request);
+ if ($env{'request.state'} eq 'published') {
+ $request->set_last_modified(&Apache::lonnet::metadata($request->uri,
+ 'lastrevisiondate'));
+ }
+ # Embedded Flash movies from Camtasia served from https will not display in IE
+ # if XML config file has expired from cache.
+ if ($ENV{'SERVER_PORT'} == 443) {
+ if ($request->uri =~ /\.xml$/) {
+ my ($httpbrowser,$clientbrowser) =
+ &Apache::loncommon::decode_user_agent($request);
+ if ($clientbrowser =~ /^explorer$/i) {
+ delete $request->headers_out->{'Cache-control'};
+ delete $request->headers_out->{'Pragma'};
+ my $expiration = time + 60;
+ my $date=strftime("%a, %d %b %Y %H:%M:%S GMT",gmtime($expiration));
+ $request->headers_out->set("Expires" => $date);
+ }
+ }
+ }
+ $request->send_http_header;
+
+ return OK if $request->header_only;
+
+
+ my $file=&Apache::lonnet::filelocation("",$request->uri);
+ my ($filetype,$breadcrumbtext);
+ if ($file =~ /\.(sty|css|js|txt|tex)$/) {
+ $filetype=$1;
+ } else {
+ $filetype='html';
+ }
+ unless ($env{'request.uri'}) {
+ $env{'request.uri'}=$request->uri;
+ &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
+ ['todocs']);
+ }
+ my ($cdom,$cnum);
+ if ($env{'request.course.id'}) {
+ $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
+ $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
+ if ($filetype eq 'html') {
+ if ($request->uri =~ m{^\Q/uploaded/$cdom/$cnum/portfolio/syllabus/\E.+$}) {
+ if (&Apache::lonnet::allowed('mdc',$env{'request.course.id'})) {
+ &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
+ ['editmode']);
+ }
+ }
+ }
+ }
+ if ($filetype eq 'sty') {
+ $breadcrumbtext = 'Style File Editor';
+ } elsif ($filetype eq 'js') {
+ $breadcrumbtext = 'Javascript Editor';
+ } elsif ($filetype eq 'css') {
+ $breadcrumbtext = 'CSS Editor';
+ } elsif ($filetype eq 'txt') {
+ $breadcrumbtext = 'Text Editor';
+ } elsif ($filetype eq 'tex') {
+ $breadcrumbtext = 'TeX Editor';
+ } else {
+ $breadcrumbtext = 'HTML Editor';
+ }
+
+#
+# Edit action? Save file.
+#
+ if (!($env{'request.state'} eq 'published')) {
+ if (($env{'form.problemmode'} eq 'saveedit') ||
+ ($env{'form.problemmode'} eq 'saveview') ||
+ ($env{'form.problemmode'} eq 'undo')) {
+ my $html_file=&Apache::lonnet::getfile($file);
+ my $error = &Apache::lonhomework::handle_save_or_undo($request, \$html_file, \$env{'form.filecont'});
+ if ($env{'form.problemmode'} eq 'saveedit') {
+ $env{'form.editmode'}='edit'; #force edit mode
+ }
+ }
+ }
+ my $inhibit_menu;
+ my %mystyle;
+ my $result = '';
+ my $filecontents=&Apache::lonnet::getfile($file);
+ if ($filecontents eq -1) {
+ my ($start_page,$end_page,$errormsg);
+ $start_page=&Apache::loncommon::start_page('File Error');
+ if ($target eq 'web') {
+ $start_page .= '<div class="LC_landmark" style="clear:both" role="menu">'.
+ '<h1 class="LC_visually_hidden">'.
+ &mt('File not found').'</h1>';
+ $end_page = '</div>';
+ }
+ $end_page .= &Apache::loncommon::end_page();
+ $errormsg='<p class="LC_error">'
+ .&mt('File not found: [_1]'
+ ,'<span class="LC_filename">'.$file.'</span>')
+ .'</p>';
+ $result=(<<ENDNOTFOUND);
+$start_page
+$errormsg
+$end_page
+ENDNOTFOUND
+ $filecontents='';
+ if ($env{'request.state'} ne 'published') {
+ if ($filetype eq 'sty') {
+ $filecontents=&createnewsty();
+ } elsif ($filetype eq 'js') {
+ $filecontents=&createnewjs();
+ } elsif ($filetype ne 'css' && $filetype ne 'txt' && $filetype ne 'tex') {
+ $filecontents=&createnewhtml();
+ }
+ $env{'form.editmode'}='edit'; #force edit mode
+ }
+ } else {
+ unless ($env{'request.state'} eq 'published') {
+ if ($filecontents=~/BEGIN LON-CAPA Internal/) {
+ &Apache::lonxml::error(&mt('This file appears to be a rendering of a LON-CAPA resource. If this is correct, this resource will act very oddly and incorrectly.'));
+ }
+#
+# we are in construction space, see if edit mode forced
+ &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
+ ['editmode']);
+ }
+ if ((!$env{'form.editmode'}) ||
+ ($env{'form.problemmode'} eq 'saveview') ||
+ ($env{'form.problemmode'} eq 'discard')) {
+ if ($filetype eq 'html' || $filetype eq 'sty') {
+ &Apache::structuretags::reset_problem_globals();
+ $result = &Apache::lonxml::xmlparse($request,$target,
+ $filecontents,'',%mystyle);
+ # .html files may contain <problem> or <Task> need to clean
+ # up if it did
+ &Apache::structuretags::reset_problem_globals();
+ &Apache::lonhomework::finished_parsing();
+ } elsif ($filetype eq 'tex') {
+ $result = &Apache::lontexconvert::converted(\$filecontents,
+ $env{'form.texengine'});
+ if ($env{'form.return_only_error_and_warning_counts'}) {
+ $result = "$errorcount:$warningcount";
+ }
+ } else {
+ $result = $filecontents;
+ }
+ &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
+ ['rawmode']);
+ if ($env{'form.rawmode'}) { $result = $filecontents; }
+ if (($env{'request.state'} eq 'construct') &&
+ (($filetype eq 'css') || ($filetype eq 'js')) && ($ENV{'HTTP_REFERER'})) {
+ if ($ENV{'HTTP_REFERER'} =~ m{^https?\://[^\/]+/priv/$LONCAPA::match_domain/$LONCAPA::match_username/[^\?]+\.(x?html?|swf)(|\?)[^\?]*$}) {
+ $inhibit_menu = 1;
+ }
+ }
+ if (($filetype ne 'html') &&
+ (!$env{'form.return_only_error_and_warning_counts'}) &&
+ (!$inhibit_menu)) {
+ my $nochgview = 1;
+ my $controls = '';
+ if ($env{'request.state'} eq 'construct') {
+ $controls = &Apache::loncommon::head_subbox(
+ &Apache::loncommon::CSTR_pageheader()
+ .&Apache::londefdef::edit_controls($nochgview));
+ }
+ if ($filetype ne 'sty' && $filetype ne 'tex') {
+ $result =~ s/</</g;
+ $result =~ s/>/>/g;
+ $result = '<table class="LC_sty_begin">'.
+ '<tr><td><b><pre>'.$result.
+ '</pre></b></td></tr></table>';
+ }
+ my $brcrum;
+ if ($env{'request.state'} eq 'construct') {
+ my $text = 'Authoring Space';
+ my $href = &Apache::loncommon::authorspace($request->uri);
+ if ($env{'request.course.id'}) {
+ my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
+ my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
+ if ($href eq "/priv/$cdom/$cnum/") {
+ $text = 'Course Authoring Space';
+ }
+ }
+ $brcrum = [{'href' => $href,
+ 'text' => $text,},
+ {'href' => '',
+ 'text' => $breadcrumbtext}];
+ } else {
+ $brcrum = ''; # FIXME: Where are we?
+ }
+ my %options = ('bread_crumbs' => $brcrum,
+ 'bgcolor' => '#FFFFFF');
+ $result =
+ &Apache::loncommon::start_page(undef,undef,\%options)
+ .$controls
+ .$result
+ .&Apache::loncommon::end_page();
+ }
+ }
+ }
+
+#
+# Edit action? Insert editing commands
+#
+ unless (($env{'request.state'} eq 'published') || ($inhibit_menu)) {
+ if (($env{'form.editmode'}) &&
+ (!($env{'form.problemmode'} eq 'saveview')) &&
+ (!($env{'form.problemmode'} eq 'discard'))) {
+ my ($displayfile,$url,$symb,$itemtitle,$action);
+ $displayfile=$request->uri;
+ if ($request->uri =~ m{^/uploaded/}) {
+ if ($env{'request.course.id'}) {
+ if ($request->uri =~ m{^\Q/uploaded/$cdom/$cnum/\E(docs|supplemental)/}) {
+ if ($1 eq 'supplemental') {
+ &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
+ ['folderpath','title']);
+ }
+ if (($env{'request.state'} eq 'edit') && ($env{'form.editmode'} eq 'edit') &&
+ ($filetype eq 'html')) {
+ &Apache::lonhtmlcommon::clear_breadcrumbs();
+ }
+ } elsif ($request->uri =~ m{^\Q/uploaded/$cdom/$cnum/portfolio/syllabus/\E(.+)$}) {
+ my $filename = $1;
+ if ($1 eq 'loncapa.html') {
+ $displayfile = &mt('Syllabus (minimal template)');
+ $action = $request->uri.'?forceedit=1';
+ } else {
+ $displayfile = &mt('Syllabus file: [_1]',$1);
+ }
+ $itemtitle = &mt('Syllabus');
+ }
+ }
+ unless ($itemtitle) {
+ ($symb,$itemtitle,$displayfile) =
+ &get_courseupload_hierarchy($request->uri,
+ $env{'form.folderpath'},
+ $env{'form.title'});
+ }
+ } else {
+ $displayfile=~s/^\/[^\/]*//;
+ }
+
+ my ($edit_info, $add_to_onload, $add_to_onresize)=
+ &inserteditinfo($filecontents,$filetype,$displayfile,$symb,
+ $itemtitle,$env{'form.folderpath'},$request->uri,$action);
+
+ my %options =
+ ('add_entries' =>
+ {'onresize' => $add_to_onresize,
+ 'onload' => $add_to_onload, });
+ my $header;
+ if ($env{'request.state'} eq 'construct') {
+ my $text = 'Authoring Space';
+ my $href = &Apache::loncommon::authorspace($request->uri);
+ if ($env{'request.course.id'}) {
+ my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
+ my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
+ if ($href eq "/priv/$cdom/$cnum/") {
+ $text = 'Course Authoring Space';
+ }
+ }
+ $options{'bread_crumbs'} = [{
+ 'href' => $href,
+ 'text' => $text},
+ {'href' => '',
+ 'text' => $breadcrumbtext}];
+ $header = &Apache::loncommon::head_subbox(
+ &Apache::loncommon::CSTR_pageheader());
+ }
+ my $js =
+ &Apache::edit::js_change_detection().
+ &Apache::loncommon::resize_textarea_js();
+ my $start_page = &Apache::loncommon::start_page(undef,$js,
+ \%options);
+ $result = $start_page
+ .$header
+ .&Apache::lonxml::message_location()
+ .$edit_info
+ .&Apache::loncommon::end_page();
+ }
+ }
+ if ($filetype eq 'html') { &writeallows($request->uri); }
+
+ &Apache::lonxml::add_messages(\$result);
+ $request->print($result);
+
+ return OK;
+}
+
+sub display_title {
+ my $result;
+ if ($env{'request.state'} eq 'construct') {
+ my $title=&Apache::lonnet::gettitle();
+ if (!defined($title) || $title eq '') {
+ $title = $env{'request.filename'};
+ $title = substr($title, rindex($title, '/') + 1);
+ }
+ $result = "<script type='text/javascript'>top.document.title = '$title - LON-CAPA "
+ .&mt('Authoring Space')."';</script>";
+ }
+ return $result;
+}
+
+sub get_courseupload_hierarchy {
+ my ($url,$folderpath,$title) = @_;
+ my ($symb,$itemtitle,$displaypath);
+ if ($env{'request.course.id'}) {
+ if ($folderpath =~ /^supplemental/) {
+ my @folders = split(/\&/,$folderpath);
+ my @pathitems;
+ while (@folders) {
+ my $folder=shift(@folders);
+ my $foldername=shift(@folders);
+ $foldername =~ s/\:(\d*)\:(\w*)\:(\w*):(\d*)\:?(\d*)$//;
+ push(@pathitems,&unescape($foldername));
+ }
+ if ($title) {
+ push(@pathitems,&unescape($title));
+ $itemtitle = $title;
+ }
+ $displaypath = join(' » ',@pathitems);
+ } else {
+ $symb = &Apache::lonnet::symbread($url);
+ my ($map,$id,$res)=&Apache::lonnet::decode_symb($symb);
+ my $navmap=Apache::lonnavmaps::navmap->new;
+ if (ref($navmap)) {
+ my $res = $navmap->getBySymb($symb);
+ if (ref($res)) {
+ my @pathitems =
+ &Apache::loncommon::get_folder_hierarchy($navmap,$map,1);
+ $itemtitle = $res->compTitle();
+ push(@pathitems,$itemtitle);
+ $displaypath = join(' » ',@pathitems);
+ }
+ }
+ }
+ }
+ return ($symb,$itemtitle,$displaypath);
+}
+
+sub debug {
+ if ($Apache::lonxml::debug eq "1") {
+ $|=1;
+ my $request=$Apache::lonxml::request;
+ if (!$request) {
+ eval { $request=Apache->request; };
+ }
+ if (!$request) {
+ eval { $request=Apache2::RequestUtil->request; };
+ }
+ $request->print('<font size="-2"><pre>DEBUG:'.&HTML::Entities::encode($_[0],'<>&"')."</pre></font>\n");
+ #&Apache::lonnet::logthis($_[0]);
+ }
+}
+
+sub show_error_warn_msg {
+ if (($env{'request.filename'} eq
+ $Apache::lonnet::perlvar{'lonDocRoot'}.'/res/lib/templates/simpleproblem.problem') &&
+ (&Apache::lonnet::allowed('mdc',$env{'request.course.id'}))) {
+ return 1;
+ }
+ return (($Apache::lonxml::debug eq 1) ||
+ ($env{'request.state'} eq 'construct') ||
+ ($Apache::lonhomework::browse eq 'F'
+ &&
+ $env{'form.show_errors'} eq 'on'));
+}
+
+sub error {
+ my @errors = @_;
+
+ $errorcount++;
+
+ $Apache::lonxml::internal_error=1;
+
+ if (defined($Apache::inputtags::part)) {
+ if ( @Apache::inputtags::response ) {
+ push(@errors,
+ &mt("This error occurred while processing response [_1] in part [_2]",
+ $Apache::inputtags::response[-1],
+ $Apache::inputtags::part));
+ } else {
+ push(@errors,
+ &mt("This error occurred while processing part [_1]",
+ $Apache::inputtags::part));
+ }
+ }
+
+ if ( &show_error_warn_msg() ) {
+ # If printing in construction space, put the error inside <pre></pre>
+ push(@Apache::lonxml::error_messages,
+ $Apache::lonxml::warnings_error_header
+ .'<div class="LC_error">'
+ .'<b>'.&mt('ERROR:').' </b>'.join("<br />\n",@errors)
+ ."</div>\n");
+ $Apache::lonxml::warnings_error_header='';
+ } else {
+ my $errormsg;
+ my ($symb)=&Apache::lonnet::symbread();
+ if ( !$symb ) {
+ #public or browsers
+ $errormsg=&mt("An error occurred while processing this resource. The author has been notified.");
+ }
+ my $host=$Apache::lonnet::perlvar{'lonHostID'};
+ push(@errors,
+ &mt("The error occurred on host [_1]",
+ "<tt>$host</tt>"));
+
+ my $msg = join('<br />', @errors);
+
+ #notify author
+ &Apache::lonmsg::author_res_msg($env{'request.filename'},$msg);
+ #notify course
+ if ( $symb && $env{'request.course.id'} ) {
+ my $cnum=$env{'course.'.$env{'request.course.id'}.'.num'};
+ my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
+ my (undef,%users)=&Apache::lonmsg::decide_receiver(undef,0,1,1,1);
+ my $declutter=&Apache::lonnet::declutter($env{'request.filename'});
+ my $baseurl = &Apache::lonnet::clutter($declutter);
+ my @userlist;
+ foreach (keys(%users)) {
+ my ($user,$domain) = split(/:/, $_);
+ push(@userlist,"$user:$domain");
+ my $key=$declutter.'_'.$user.'_'.$domain;
+ my %lastnotified=&Apache::lonnet::get('nohist_xmlerrornotifications',
+ [$key],
+ $cdom,$cnum);
+ my $now=time;
+ if ($now-$lastnotified{$key}>86400) {
+ my $title = &Apache::lonnet::gettitle($symb);
+ my $sentmessage;
+ &Apache::lonmsg::user_normal_msg($user,$domain,
+ "Error [$title]",$msg,'',$baseurl,'','',
+ \$sentmessage,$symb,$title,1);
+ &Apache::lonnet::put('nohist_xmlerrornotifications',
+ {$key => $now},
+ $cdom,$cnum);
+ }
+ }
+ if ($env{'request.role.adv'}) {
+ $errormsg=&mt("An error occurred while processing this resource. The course personnel ([_1]) and the author have been notified.",join(', ',@userlist));
+ } else {
+ $errormsg=&mt("An error occurred while processing this resource. The instructor has been notified.");
+ }
+ }
+ push(@Apache::lonxml::error_messages,"<span class=\"LC_warning\">$errormsg</span><br />");
+ }
+}
+
+sub warning {
+ $warningcount++;
+
+ if ($env{'form.grade_target'} ne 'tex') {
+ if ( &show_error_warn_msg() ) {
+ push(@Apache::lonxml::warning_messages,
+ $Apache::lonxml::warnings_error_header
+ .'<div class="LC_warning">'
+ .&mt('[_1]W[_2]ARNING','<b>','</b>')."<b>:</b> ".join('<br />',@_)
+ ."</div>\n"
+ );
+ $Apache::lonxml::warnings_error_header='';
+ }
+ }
+}
+
+sub info {
+ if ($env{'form.grade_target'} ne 'tex'
+ && $env{'request.state'} eq 'construct') {
+ push(@Apache::lonxml::info_messages,join('<br />',@_)."<br />\n");
+ }
+}
+
+sub message_location {
+ return '__LONCAPA_INTERNAL_MESSAGE_LOCATION__';
+}
+
+sub add_messages {
+ my ($msg)=@_;
+ my $result=join(' ',
+ @Apache::lonxml::info_messages,
+ @Apache::lonxml::error_messages,
+ @Apache::lonxml::warning_messages);
+ undef(@Apache::lonxml::info_messages);
+ undef(@Apache::lonxml::error_messages);
+ undef(@Apache::lonxml::warning_messages);
+ $$msg=~s/__LONCAPA_INTERNAL_MESSAGE_LOCATION__/$result/;
+ $$msg=~s/__LONCAPA_INTERNAL_MESSAGE_LOCATION__//g;
+}
+
+sub get_param {
+ my ($param,$parstack,$safeeval,$context,$case_insensitive, $noelide) = @_;
+
+ if ( ! $context ) { $context = -1; }
+ my $args ='';
+ if ( $#$parstack > (-2-$context) ) { $args=$$parstack[$context]; }
+ if ( ! $Apache::lonxml::usestyle ) {
+ $args=$Apache::lonxml::style_values.$args;
+ }
+
+
+ if ($noelide) {
+# $args =~ s/\\'/'/g;
+ $args =~ s/'\$/'\\\$/g;
+ }
+
+ if ( ! $args ) { return undef; }
+ if ( $case_insensitive ) {
+ if ($args =~ s/(my (?:.*))(\$\Q$param\E[,\)])/$1.lc($2)/ei) {
+
+ return &Apache::run::run("{$args;".'return $'.$param.'}',
+ $safeeval); #'
+ } else {
+ return undef;
+ }
+ } else {
+ if ( $args =~ /my .*\$\Q$param\E[,\)]/ ) {
+
+ return &Apache::run::run("{$args;".'return $'.$param.'}',
+ $safeeval); #'
+ } else {
+ return undef;
+ }
+ }
+}
+
+sub get_param_var {
+ my ($param,$parstack,$safeeval,$context,$case_insensitive) = @_;
+ if ( ! $context ) { $context = -1; }
+ my $args ='';
+ if ( $#$parstack > (-2-$context) ) { $args=$$parstack[$context]; }
+ if ( ! $Apache::lonxml::usestyle ) {
+ $args=$Apache::lonxml::style_values.$args;
+ }
+ &Apache::lonxml::debug("Args are $args param is $param");
+ if ($case_insensitive) {
+ if (! ($args=~s/(my (?:.*))(\$\Q$param\E[,\)])/$1.lc($2)/ei)) {
+ return undef;
+ }
+ } elsif ( $args !~ /my .*\$\Q$param\E[,\)]/ ) { return undef; }
+ my $value=&Apache::run::run("{$args;".'return $'.$param.'}',$safeeval); #'
+ &Apache::lonxml::debug("first run is $value");
+ if ($value =~ /^[\$\@\%][a-zA-Z_]\w*$/) {
+ &Apache::lonxml::debug("doing second");
+ my @result=&Apache::run::run("return $value",$safeeval,1);
+ if (!defined($result[0])) {
+ return $value
+ } else {
+ if (wantarray) { return @result; } else { return $result[0]; }
+ }
+ } else {
+ return $value;
+ }
+}
+
+sub register_insert_xml {
+ my $parser = HTML::LCParser->new($Apache::lonnet::perlvar{'lonTabDir'}
+ .'/insertlist.xml');
+ my ($tagnum,$in_help)=(0,0);
+ my @alltags;
+ my $tag;
+ while (my $token = $parser->get_token()) {
+ if ($token->[0] eq 'S') {
+ my $key;
+ if ($token->[1] eq 'tag') {
+ $tag = $token->[2]{'name'};
+ if (defined($tag)) {
+ $insertlist{$tagnum.'.tag'} = $tag;
+ $insertlist{$tag.'.num'} = $tagnum;
+ push(@alltags,$tag);
+ }
+ } elsif ($in_help && $token->[1] eq 'file') {
+ $key = $tag.'.helpfile';
+ } elsif ($in_help && $token->[1] eq 'description') {
+ $key = $tag.'.helpdesc';
+ } elsif ($token->[1] eq 'description' ||
+ $token->[1] eq 'color' ||
+ $token->[1] eq 'show' ) {
+ $key = $tag.'.'.$token->[1];
+ } elsif ($token->[1] eq 'insert_sub') {
+ $key = $tag.'.function';
+ } elsif ($token->[1] eq 'help') {
+ $in_help=1;
+ } elsif ($token->[1] eq 'allow') {
+ $key = $tag.'.allow';
+ }
+ if (defined($key)) {
+ $insertlist{$key} = $parser->get_text();
+ $insertlist{$key} =~ s/(^\s*|\s*$ )//gx;
+ }
+ } elsif ($token->[0] eq 'E') {
+ if ($token->[1] eq 'tag') {
+ undef($tag);
+ $tagnum++;
+ } elsif ($token->[1] eq 'help') {
+ undef($in_help);
+ }
+ }
+ }
+
+ # parse the allows and ignore tags set to <show>no</show>
+ foreach my $tag (@alltags) {
+ next if (!exists($insertlist{$tag.'.allow'}));
+ my $allow = $insertlist{$tag.'.allow'};
+ foreach my $element (split(',',$allow)) {
+ $element =~ s/(^\s*|\s*$ )//gx;
+ if (!exists($insertlist{$element.'.show'})
+ || $insertlist{$element.'.show'} ne 'no') {
+ push(@{ $insertlist{$tag.'.which'} },$element);
+ }
+ }
+ }
+}
+
+sub register_insert {
+ return ®ister_insert_xml(@_);
+# &dump_insertlist('2');
+}
+
+sub dump_insertlist {
+ my ($ext) = @_;
+ open(XML,">","/tmp/insertlist.xml.$ext");
+ print XML ("<insertlist>");
+ my $i=0;
+
+ while (exists($insertlist{"$i.tag"})) {
+ my $tag = $insertlist{"$i.tag"};
+ print XML ("
+\t<tag name=\"$tag\">");
+ if (defined($insertlist{"$tag.description"})) {
+ print XML ("
+\t\t<description>".$insertlist{"$tag.description"}."</description>");
+ }
+ if (defined($insertlist{"$tag.color"})) {
+ print XML ("
+\t\t<color>".$insertlist{"$tag.color"}."</color>");
+ }
+ if (defined($insertlist{"$tag.function"})) {
+ print XML ("
+\t\t<insert_sub>".$insertlist{"$tag.function"}."</insert_sub>");
+ }
+ if (defined($insertlist{"$tag.show"})
+ && $insertlist{"$tag.show"} ne 'yes') {
+ print XML ("
+\t\t<show>".$insertlist{"$tag.show"}."</show>");
+ }
+ if (defined($insertlist{"$tag.helpfile"})) {
+ print XML ("
+\t\t<help>
+\t\t\t<file>".$insertlist{"$tag.helpfile"}."</file>");
+ if ($insertlist{"$tag.helpdesc"} ne '') {
+ print XML ("
+\t\t\t<description>".$insertlist{"$tag.helpdesc"}."</description>");
+ }
+ print XML ("
+\t\t</help>");
+ }
+ if (defined($insertlist{"$tag.which"})) {
+ print XML ("
+\t\t<allow>".join(',',sort(@{ $insertlist{"$tag.which"} }))."</allow>");
+ }
+ print XML ("
+\t</tag>");
+ $i++;
+ }
+ print XML ("\n</insertlist>\n");
+ close(XML);
+}
+
+sub description {
+ my ($token)=@_;
+ my $tag = &get_tag($token);
+ return $insertlist{$tag.'.description'};
+}
+
+# Returns a list containing the help file, and the description
+sub helpinfo {
+ my ($token)=@_;
+ my $tag = &get_tag($token);
+ return ($insertlist{$tag.'.helpfile'}, &mt($insertlist{$tag.'.helpdesc'}));
+}
+
+sub get_tag {
+ my ($token)=@_;
+ my $tagnum;
+ my $tag=$token->[1];
+ foreach my $namespace (reverse(@Apache::lonxml::namespace)) {
+ my $testtag = $namespace.'::'.$tag;
+ $tagnum = $insertlist{"$testtag.num"};
+ last if (defined($tagnum));
+ }
+ if (!defined($tagnum)) {
+ $tagnum = $Apache::lonxml::insertlist{"$tag.num"};
+ }
+ return $insertlist{"$tagnum.tag"};
+}
+
+############################################################
+# PDF-FORM-METHODS
+
+=pod
+
+=item &print_pdf_radiobutton(fieldname, value)
+
+Returns a latexline to generate a PDF-Form-Radiobutton.
+Note: Radiobuttons with equal names are automaticly grouped
+ in a selection-group.
+
+$fieldname: PDF internalname of the radiobutton(group)
+$value: Value of radiobutton
+
+=cut
+sub print_pdf_radiobutton {
+ my ($fieldname, $value) = @_;
+ return '\radioButton[\symbolchoice{circle}]{'
+ .$fieldname.'}{10bp}{10bp}{'.$value.'}';
+}
+
+
+=pod
+
+=item &print_pdf_start_combobox(fieldname)
+
+Starts a latexline to generate a PDF-Form-Combobox with text.
+
+$fieldname: PDF internal name of the Combobox
+
+=cut
+sub print_pdf_start_combobox {
+ my $result;
+ my ($fieldName) = @_;
+ $result .= '\begin{tabularx}{\textwidth}{p{2.5cm}X}'."\n";
+ $result .= '\comboBox[]{'.$fieldName.'}{2.3cm}{14bp}{'; #
+
+ return $result;
+}
+
+
+=pod
+
+=item &print_pdf_add_combobox_option(options)
+
+Generates a latexline to add Options to a PDF-Form-ComboBox.
+
+$option: PDF internal name of the Combobox-Option
+
+=cut
+sub print_pdf_add_combobox_option {
+
+ my $result;
+ my ($option) = @_;
+
+ $result .= '('.$option.')';
+
+ return $result;
+}
+
+
+=pod
+
+=item &print_pdf_end_combobox(text) {
+
+Returns latexcode to end a PDF-Form-Combobox with text.
+
+=cut
+sub print_pdf_end_combobox {
+ my $result;
+ my ($text) = @_;
+
+ $result .= '}&'.$text."\\\\\n";
+ $result .= '\end{tabularx}' . "\n";
+ $result .= '\hspace{2mm}' . "\n";
+ return $result;
+}
+
+
+=pod
+
+=item &print_pdf_hiddenField(fieldname, user, domain)
+
+Returns a latexline to generate a PDF-Form-hiddenField with userdata.
+
+$fieldname label for hiddentextfield
+$user: name of user
+$domain: domain of user
+
+=cut
+sub print_pdf_hiddenfield {
+ my $result;
+ my ($fieldname, $user, $domain) = @_;
+
+ $result .= '\textField [\F{\FHidden}\F{-\FPrint}\V{'.$domain.'&'.$user.'}]{'.$fieldname.'}{0in}{0in}'."\n";
+
+ return $result;
+}
+
+1;
+__END__