--- loncom/xml/lonxml.pm 2004/12/09 23:45:59 1.350
+++ loncom/xml/lonxml.pm 2005/04/07 00:42:07 1.371
@@ -1,7 +1,7 @@
# The LearningOnline Network with CAPA
# XML Parser Module
#
-# $Id: lonxml.pm,v 1.350 2004/12/09 23:45:59 albertel Exp $
+# $Id: lonxml.pm,v 1.371 2005/04/07 00:42:07 albertel Exp $
#
# Copyright Michigan State University Board of Trustees
#
@@ -149,37 +149,49 @@ $Apache::lonxml::post_evaluate=1;
$Apache::lonxml::warnings_error_header='';
sub xmlbegin {
- my $output='';
- @htmlareafields=();
- if ($ENV{'browser.mathml'}) {
- $output='<?xml version="1.0"?>'
- .'<?xml-stylesheet type="text/css" href="/adm/MathML/mathml.css"?>'
- .'<!DOCTYPE html SYSTEM "/adm/MathML/mathml.dtd" '
- .'[<!ENTITY mathns "http://www.w3.org/1998/Math/MathML">]>'
+ my ($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/TR/REC-html40">';
- } else {
- $output='<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
-<html>';
- }
- return $output;
+ .'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 $output;
}
sub xmlend {
my ($target,$parser)=@_;
my $mode='xml';
my $status='OPEN';
- if ($Apache::lonhomework::parsing_a_problem) {
+ if ($Apache::lonhomework::parsing_a_problem ||
+ $Apache::lonhomework::parsing_a_task ) {
$mode='problem';
$status=$Apache::inputtags::status[-1];
}
- my $discussion=&Apache::lonfeedback::list_discussion($mode,$status);
+ 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') {
+ $discussion=&Apache::lonfeedback::list_discussion($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 '';
} else {
- return $discussion.'</html>';
+ return $discussion.&Apache::loncommon::endbodytag();
}
}
@@ -284,7 +296,7 @@ sub printtokenheader {
}
}
-sub fontsettings() {
+sub fontsettings {
my $headerstring='';
if (($ENV{'browser.os'} eq 'mac') && (!$ENV{'browser.mathml'})) {
$headerstring.=
@@ -309,6 +321,7 @@ sub xmlparse {
&setup_globals($request,$target);
&Apache::inputtags::initialize_inputtags();
+ &Apache::bridgetask::initialize_bridgetask();
&Apache::outputtags::initialize_outputtags();
&Apache::edit::initialize_edit();
&Apache::londefdef::initialize_londefdef();
@@ -353,8 +366,8 @@ sub xmlparse {
my @stack = ();
my @parstack = ();
- &initdepth;
-
+ &initdepth();
+ &init_alarm();
my $finaloutput = &inner_xmlparse($target,\@stack,\@parstack,\@pars,
$safeeval,\%style_for_target);
@@ -363,28 +376,37 @@ sub xmlparse {
}
&do_registered_ssi();
if ($Apache::lonxml::counter_changed) { &store_counter() }
+ if ($ENV{'form.return_only_error_and_warning_counts'}) {
+ return "$errorcount:$warningcount";
+ }
return $finaloutput;
}
sub htmlclean {
my ($raw,$full)=@_;
+# Take care of CRLF etc
- my $tree = HTML::TreeBuilder->new;
- $tree->ignore_unknown(0);
-
- $tree->parse($raw);
-
- my $output= $tree->as_HTML(undef,' ');
-
- $output=~s/\<(br|hr|img|meta|allow)(.*?)\>/\<$1$2 \/\>/gis;
- $output=~s/\<\/(br|hr|img|meta|allow)\>//gis;
+ $raw=~s/\r\f/\n/gs; $raw=~s/\f\r/\n/gs;
+ $raw=~s/\r\n/\n/gs; $raw=~s/\n\r/\n/gs;
+ $raw=~s/\f/\n/gs; $raw=~s/\r/\n/gs;
+ $raw=~s/\&\#10\;/\n/gs; $raw=~s/\&\#13\;/\n/gs;
+
+# Generate empty tags, remove wrong end tags
+ $raw=~s/\<(br|hr|img|meta|allow|basefont)([^\>\/]*?)\>/\<$1$2 \/\>/gis;
+ $raw=~s/\<\/(br|hr|img|meta|allow|basefont)\>//gis;
unless ($full) {
- $output=~s/\<[\/]*(body|head|html)\>//gis;
+ $raw=~s/\<[\/]*(body|head|html)\>//gis;
}
-
- $tree = $tree->delete;
-
- return $output;
+# Make standard tags lowercase
+ foreach ('html','body','head','meta','h1','h2','h3','h4','b','i','m',
+ 'table','tr','td','th','p','br','hr','img','embed','font',
+ 'a','strong','center','title','basefont','li','ol','ul',
+ 'input','select','form','option','script','pre') {
+ $raw=~s/\<$_\s*\>/\<$_\>/gis;
+ $raw=~s/\<\/$_\s*\>/<\/$_\>/gis;
+ $raw=~s/\<$_\s([^\>]*)\>/<$_ $1\>/gis;
+ }
+ return $raw;
}
sub latex_special_symbols {
@@ -399,18 +421,17 @@ sub latex_special_symbols {
$string=~s/([^\\])\#/$1\\\#/g;
} else {
$string=~s/\\/\\ensuremath{\\backslash}/g;
- $string=~s/([^\\]|^)\%/$1\\\%/g;
- $string=~s/([^\\]|^)\$/$1\\\$/g;
- $string=~s/([^\\])\_/$1\\_/g;
- $string=~s/\$\$/\$\\\$/g;
- $string=~s/\_\_/\_\\\_/g;
- $string=~s/\#\#/\#\\\#/g;
+ $string=~s/\\\%|\%/\\\%/g;
+ $string=~s/\\{|{/\\{/g;
+ $string=~s/\\}|}/\\}/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/([^\\]|^)\&/$1\\\&/g;
- $string=~s/([^\\]|^)\#/$1\\\#/g;
+ $string=~s/\\\&|\&/\\\&/g;
+ $string=~s/\\\#|\#/\\\#/g;
$string=~s/\|/\$\\mid\$/g;
#single { or } How to escape?
}
@@ -674,12 +695,15 @@ sub init_safespace {
$safeeval->permit(":base_math");
$safeeval->permit("sort");
$safeeval->permit("time");
+ $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');
$safehole->wrap(\&Math::Cephes::asin,$safeeval,'&asin');
$safehole->wrap(\&Math::Cephes::acos,$safeeval,'&acos');
@@ -781,6 +805,28 @@ sub default_homework_load {
}
}
+{
+ 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) {
@@ -1014,7 +1060,8 @@ sub get_all_text {
sub newparser {
my ($parser,$contentref,$dir) = @_;
push (@$parser,HTML::LCParser->new($contentref));
- $$parser['-1']->xml_mode('1');
+ $$parser[-1]->xml_mode(1);
+ $$parser[-1]->marked_sections(1);
if ( $dir eq '' ) {
push (@Apache::lonxml::pwd, $Apache::lonxml::pwd[$#Apache::lonxml::pwd]);
} else {
@@ -1209,7 +1256,7 @@ $initialize
$xml_help
<input type="hidden" name="editmode" value="$lt{'ed'}" />
$buttons<br />
-<textarea cols="80" rows="44" name="filecont" id="filecont">$filecontents</textarea>
+<textarea style="width:100%" cols="80" rows="44" name="filecont" id="filecont">$filecontents</textarea>
<br />$buttons
<br />
</form>
@@ -1255,12 +1302,12 @@ sub handler {
$Apache::lonxml::debug=$ENV{'user.debug'};
- if ($ENV{'browser.mathml'}) {
- &Apache::loncommon::content_type($request,'text/xml');
- } else {
- &Apache::loncommon::content_type($request,'text/html');
- }
+ &Apache::loncommon::content_type($request,'text/html');
&Apache::loncommon::no_cache($request);
+ if ($ENV{'request.state'} eq 'published') {
+ $request->set_last_modified(&Apache::lonnet::metadata($request->uri,
+ 'lastrevisiondate'));
+ }
$request->send_http_header;
return OK if $request->header_only;
@@ -1328,6 +1375,7 @@ ENDNOTFOUND
if (!$ENV{'form.editmode'} || $ENV{'form.viewmode'}) {
$result = &Apache::lonxml::xmlparse($request,$target,$filecontents,
'',%mystyle);
+ undef($Apache::lonhomework::parsing_a_task);
}
}
@@ -1382,6 +1430,10 @@ sub debug {
}
sub show_error_warn_msg {
+ if ($ENV{'request.filename'} eq '/home/httpd/html/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'