--- loncom/xml/lonxml.pm 2005/11/02 22:48:52 1.386
+++ loncom/xml/lonxml.pm 2006/10/04 19:50:43 1.415.2.1
@@ -1,7 +1,7 @@
# The LearningOnline Network with CAPA
# XML Parser Module
#
-# $Id: lonxml.pm,v 1.386 2005/11/02 22:48:52 albertel Exp $
+# $Id: lonxml.pm,v 1.415.2.1 2006/10/04 19:50:43 albertel Exp $
#
# Copyright Michigan State University Board of Trustees
#
@@ -40,7 +40,7 @@
package Apache::lonxml;
use vars
-qw(@pwd @outputstack $redirection $import @extlinks $metamode $evaluate %insertlist @namespace $errorcount $warningcount @htmlareafields);
+qw(@pwd @outputstack $redirection $import @extlinks $metamode $evaluate %insertlist @namespace $errorcount $warningcount);
use strict;
use HTML::LCParser();
use HTML::TreeBuilder();
@@ -52,6 +52,7 @@ use Math::Random();
use Opcode();
use POSIX qw(strftime);
use Time::HiRes qw( gettimeofday tv_interval );
+use Symbol();
sub register {
my ($space,@taglist) = @_;
@@ -122,9 +123,6 @@ $evaluate = 1;
# stores the list of active tag namespaces
@namespace=();
-# has the dynamic menu been updated to know about this resource
-$Apache::lonxml::registered=0;
-
# a pointer the the Apache request object
$Apache::lonxml::request='';
@@ -148,26 +146,17 @@ $Apache::lonxml::post_evaluate=1;
#a header message to emit in the case of any generated warning or errors
$Apache::lonxml::warnings_error_header='';
-sub xmlbegin {
- my ($style)=@_;
- my $output='';
- @htmlareafields=();
- if ($env{'browser.mathml'}) {
- $output='<?xml version="1.0"?>'
- #.'<?xml-stylesheet type="text/css" href="/adm/MathML/mathml.css"?>'."\n"
-# .'<!DOCTYPE html SYSTEM "/adm/MathML/mathml.dtd" '
-
-# .'<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd" [<!ENTITY mathns "http://www.w3.org/1998/Math/MathML">] >'
- .'<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1 plus MathML 2.0 plus SVG 1.1//EN" "http://www.w3.org/2002/04/xhtml-math-svg/xhtml-math-svg.dtd">'
- .'<html xmlns:math="http://www.w3.org/1998/Math/MathML" '
- .'xmlns="http://www.w3.org/1999/xhtml">';
- } else {
- $output='<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html>';
- }
- if ($style eq 'encode') {
- $output=&HTML::Entities::encode($output,'<>&"');
- }
- return $output;
+# Control whether or not LaTeX symbols should be substituted for their
+# \ style equivalents...this may be turned off e.g. in an verbatim
+# environment.
+
+$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 {
@@ -190,9 +179,9 @@ sub xmlend {
$discussion.='<tex>\keephidden{ENDOFPROBLEM}\vskip 0.5mm\noindent\makebox[\textwidth/$number_of_columns][b]{\hrulefill}\end{document}</tex>';
&Apache::lonxml::newparser($parser,\$discussion,'');
return '';
- } else {
- return $discussion.&Apache::loncommon::endbodytag();
}
+
+ return $discussion;
}
sub tokeninputfield {
@@ -272,13 +261,7 @@ sub printtokenheader {
$tcrsid=$courseid;
}
- my %reply=&Apache::lonnet::get('environment',
- ['firstname','middlename','lastname','generation'],
- $tudom,$tuname);
- my $plainname=$reply{'firstname'}.' '.
- $reply{'middlename'}.' '.
- $reply{'lastname'}.' '.
- $reply{'generation'};
+ my $plainname=&Apache::loncommon::plainname($tuname,$tudom);
if ($target eq 'web') {
my %idhash=&Apache::lonnet::idrget($tudom,($tuname));
@@ -296,18 +279,6 @@ sub printtokenheader {
}
}
-sub fontsettings {
- my $headerstring='';
- if (($env{'browser.os'} eq 'mac') && (!$env{'browser.mathml'})) {
- $headerstring.=
- '<meta Content-Type="text/html; charset=x-mac-roman" />';
- } elsif (!$env{'browser.mathml'} && $env{'browser.unicode'}) {
- $headerstring.=
- '<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />';
- }
- return $headerstring;
-}
-
sub printalltags {
my $temp;
foreach $temp (sort keys %Apache::lonxml::alltags) {
@@ -369,13 +340,16 @@ sub xmlparse {
&initdepth();
&init_alarm();
my $finaloutput = &inner_xmlparse($target,\@stack,\@parstack,\@pars,
- $safeeval,\%style_for_target);
+ $safeeval,\%style_for_target,1);
if ($env{'request.uri'}) {
&writeallows($env{'request.uri'});
}
&do_registered_ssi();
if ($Apache::lonxml::counter_changed) { &store_counter() }
+
+ &clean_safespace($safeeval);
+
if ($env{'form.return_only_error_and_warning_counts'}) {
return "$errorcount:$warningcount";
}
@@ -384,14 +358,22 @@ sub xmlparse {
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/(\\|_|\^)/ /g;
+ $string =~ s/\\/\$\\backslash\$/g; # \ -> $\backslash$ per LaTex line by line pg 10.
$string =~ s/(\$|%|\{|\})/\\$1/g;
- $string =~ s/_/ /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;
$string=~s/\\\%|\%/\\\%/g;
@@ -413,11 +395,12 @@ sub latex_special_symbols {
}
sub inner_xmlparse {
- my ($target,$stack,$parstack,$pars,$safeeval,$style_for_target)=@_;
+ my ($target,$stack,$parstack,$pars,$safeeval,$style_for_target,$start)=@_;
my $finaloutput = '';
my $result;
my $token;
my $dontpop=0;
+ my $startredirection = $Apache::lonxml::redirection;
while ( $#$pars > -1 ) {
while ($token = $$pars['-1']->get_token) {
if (($token->[0] eq 'T') || ($token->[0] eq 'C') ) {
@@ -527,7 +510,12 @@ sub inner_xmlparse {
# $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);
}
@@ -613,8 +601,6 @@ sub callsub {
sub setup_globals {
my ($request,$target)=@_;
$Apache::lonxml::request=$request;
- $Apache::lonxml::registered = 0;
- @Apache::lonxml::htmlareafields=();
$errorcount=0;
$warningcount=0;
$Apache::lonxml::default_homework_loaded=0;
@@ -625,6 +611,7 @@ sub setup_globals {
@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;
@@ -636,7 +623,7 @@ sub setup_globals {
$Apache::lonxml::evaluate = 1;
$Apache::lonxml::import = 1;
} elsif ($target eq 'grade') {
- &startredirection;
+ &startredirection(); #ended in inner_xmlparse on exit
$Apache::lonxml::metamode = 0;
$Apache::lonxml::evaluate = 1;
$Apache::lonxml::import = 1;
@@ -795,6 +782,34 @@ sub init_safespace {
&initialize_rndseed($safeeval);
}
+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;
@@ -918,6 +933,16 @@ sub decreasedepth {
#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' && $id =~ /(\.|_)/) {
+ &error(&mt("IDs are not allowed to contain "<tt>_</tt>" or "<tt>.</tt>""));
+ }
+ if ($id =~ /^\s*$/) { $id = $Apache::lonxml::curdepth; }
+ return $id;
+}
+
sub get_all_text_unbalanced {
#there is a copy of this in lonpublisher.pm
my($tag,$pars)= @_;
@@ -961,7 +986,10 @@ sub increment_counter {
}
sub init_counter {
- if (defined($env{'form.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 {
@@ -972,9 +1000,36 @@ sub init_counter {
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 $env{'form.counter'};
+ }
+}
+
sub get_all_text {
my($tag,$pars,$style)= @_;
my $gotfullstack=1;
@@ -1234,8 +1289,7 @@ sub inserteditinfo {
my $initialize='';
if ($filetype eq 'html') {
my $addbuttons=&Apache::lonhtmlcommon::htmlareaaddbuttons();
- $initialize=&Apache::lonhtmlcommon::htmlareaheaders().
- &Apache::lonhtmlcommon::spellheader();
+ $initialize=&Apache::lonhtmlcommon::spellheader();
if (!&Apache::lonhtmlcommon::htmlareablocked() &&
&Apache::lonhtmlcommon::htmlareabrowser()) {
$initialize.=(<<FULLPAGE);
@@ -1275,7 +1329,6 @@ $cleanbut
<input type="submit" name="viewmode" accesskey="v" value="$lt{'vi'}" />
BUTTONS
$buttons.=&Apache::lonhtmlcommon::spelllink('xmledit','filecont');
- $buttons.=&Apache::lonhtmlcommon::htmlareaselectactive('filecont');
my $editfooter=(<<ENDFOOTER);
$initialize
<hr />
@@ -1365,17 +1418,13 @@ sub handler {
my $result = '';
my $filecontents=&Apache::lonnet::getfile($file);
if ($filecontents eq -1) {
- my $bodytag=&Apache::loncommon::bodytag('File Error');
+ my $start_page=&Apache::loncommon::start_page('File Error');
+ my $end_page=&Apache::loncommon::end_page();
my $fnf=&mt('File not found');
$result=(<<ENDNOTFOUND);
-<html>
-<head>
-<title>$fnf</title>
-</head>
-$bodytag
+$start_page
<b>$fnf: $file</b>
-</body>
-</html>
+$end_page
ENDNOTFOUND
$filecontents='';
if ($env{'request.state'} ne 'published') {
@@ -1402,7 +1451,7 @@ ENDNOTFOUND
undef($Apache::lonhomework::parsing_a_task);
&Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
['rawmode']);
- if ($env{'rawmode'}) { $result = $filecontents; }
+ if ($env{'form.rawmode'}) { $result = $filecontents; }
}
}
@@ -1413,18 +1462,20 @@ ENDNOTFOUND
if ($env{'form.editmode'} && (!($env{'form.viewmode'}))) {
my $displayfile=$request->uri;
$displayfile=~s/^\/[^\/]*//;
- my $bodytag='<body bgcolor="#FFFFFF">';
- if ($env{'environment.remote'} eq 'off') {
- $bodytag=&Apache::loncommon::bodytag();
+ my %options = ();
+ if ($env{'environment.remote'} ne 'off') {
+ $options{'bgcolor'} = '#FFFFFF';
}
- $result='<html>'.$bodytag.
+ my $start_page = &Apache::loncommon::start_page(undef,undef,
+ \%options);
+ $result=$start_page.
&Apache::lonxml::message_location().'<h3>'.
$displayfile.
- '</h3></body></html>';
+ '</h3>'.&Apache::loncommon::end_page();
$result=&inserteditinfo($result,$filecontents,$filetype);
}
}
- if ($filetype eq 'html') { writeallows($request->uri); }
+ if ($filetype eq 'html') { &writeallows($request->uri); }
&Apache::lonxml::add_messages(\$result);
@@ -1450,7 +1501,12 @@ sub debug {
if ($Apache::lonxml::debug eq "1") {
$|=1;
my $request=$Apache::lonxml::request;
- if (!$request) { $request=Apache->request; }
+ if (!$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($_[0]);
}
@@ -1482,9 +1538,11 @@ sub error {
if ( !$symb ) {
#public or browsers
$errormsg=&mt("An error occured while processing this resource. The author has been notified.");
- }
+ }
+ my $host=$Apache::lonnet::perlvar{'lonHostID'};
+ my $msg = join('<br />',(@_,"The occured on host <tt>$host</tt>"));
#notify author
- &Apache::lonmsg::author_res_msg($env{'request.filename'},join('<br />',@_));
+ &Apache::lonmsg::author_res_msg($env{'request.filename'},$msg);
#notify course
if ( $symb && $env{'request.course.id'} ) {
my $cnum=$env{'course.'.$env{'request.course.id'}.'.num'};
@@ -1502,7 +1560,7 @@ sub error {
my $now=time;
if ($now-$lastnotified{$key}>86400) {
&Apache::lonmsg::user_normal_msg($user,$domain,
- "Error [$declutter]",join('<br />',@_));
+ "Error [$declutter]",$msg);
&Apache::lonnet::put('nohist_xmlerrornotifications',
{$key => $now},
$cdom,$cnum);