--- loncom/xml/lonxml.pm 2002/03/18 21:51:34 1.158
+++ loncom/xml/lonxml.pm 2002/10/08 17:09:09 1.199
@@ -1,7 +1,7 @@
# The LearningOnline Network with CAPA
# XML Parser Module
#
-# $Id: lonxml.pm,v 1.158 2002/03/18 21:51:34 matthew Exp $
+# $Id: lonxml.pm,v 1.199 2002/10/08 17:09:09 albertel Exp $
#
# Copyright Michigan State University Board of Trustees
#
@@ -60,16 +60,16 @@
package Apache::lonxml;
use vars
-qw(@pwd @outputstack $redirection $import @extlinks $metamode $evaluate %insertlist @namespace);
+qw(@pwd @outputstack $redirection $import @extlinks $metamode $evaluate %insertlist @namespace $prevent_entity_encode);
use strict;
-use HTML::TokeParser;
-use HTML::TreeBuilder;
-use HTML::Entities;
-use Safe;
-use Safe::Hole;
-use Math::Cephes qw(:trigs :hypers :bessels erf erfc);
-use Math::Random qw(:all);
-use Opcode;
+use HTML::LCParser();
+use HTML::TreeBuilder();
+use HTML::Entities();
+use Safe();
+use Safe::Hole();
+use Math::Cephes();
+use Math::Random();
+use Opcode();
sub register {
my ($space,@taglist) = @_;
@@ -90,15 +90,16 @@ sub deregister {
}
use Apache::Constants qw(:common);
-use Apache::lontexconvert;
-use Apache::style;
-use Apache::run;
-use Apache::londefdef;
-use Apache::scripttag;
-use Apache::edit;
-use Apache::lonnet;
-use Apache::File;
-use Apache::loncommon;
+use Apache::lontexconvert();
+use Apache::style();
+use Apache::run();
+use Apache::londefdef();
+use Apache::scripttag();
+use Apache::edit();
+use Apache::lonnet();
+use Apache::File();
+use Apache::loncommon();
+use Apache::lonfeedback();
#================================================== Main subroutine: xmlparse
#debugging control, to turn on debugging modify the correct handler
@@ -129,9 +130,15 @@ $evaluate = 1;
# stores the list of active tag namespaces
@namespace=();
+# if 0 all high ASCII characters will be encoded into HTML Entities
+$prevent_entity_encode=0;
+
# 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='';
+
sub xmlbegin {
my $output='';
if ($ENV{'browser.mathml'}) {
@@ -148,6 +155,7 @@ sub xmlbegin {
}
sub xmlend {
+ my ($discussiononly,$symb)=@_;
my $discussion='';
if ($ENV{'request.course.id'}) {
my $crs='/'.$ENV{'request.course.id'};
@@ -156,30 +164,47 @@ sub xmlend {
}
$crs=~s/\_/\//g;
my $seeid=&Apache::lonnet::allowed('rin',$crs);
- my $symb=&Apache::lonnet::symbread();
+ unless ($symb) {
+ $symb=&Apache::lonnet::symbread();
+ }
if ($symb) {
my %contrib=&Apache::lonnet::restore($symb,$ENV{'request.course.id'},
$ENV{'course.'.$ENV{'request.course.id'}.'.domain'},
$ENV{'course.'.$ENV{'request.course.id'}.'.num'});
if ($contrib{'version'}) {
- $discussion.=
- '<address><hr /><h2>Course Discussion of Resource</h2>';
+ unless ($discussiononly) {
+ $discussion.=
+ '<address><hr />';
+ }
my $idx;
for ($idx=1;$idx<=$contrib{'version'};$idx++) {
my $hidden=($contrib{'hidden'}=~/\.$idx\./);
unless (($hidden) && (!$seeid)) {
my $message=$contrib{$idx.':message'};
$message=~s/\n/\<br \/\>/g;
+ $message=&Apache::lontexconvert::msgtexconverted($message);
if ($message) {
if ($hidden) {
$message='<font color="#888888">'.$message.'</font>';
}
+ my $screenname=&Apache::loncommon::screenname(
+ $contrib{$idx.':sendername'},
+ $contrib{$idx.':senderdomain'});
+ my $plainname=&Apache::loncommon::nickname(
+ $contrib{$idx.':sendername'},
+ $contrib{$idx.':senderdomain'});
+
my $sender='Anonymous';
if ((!$contrib{$idx.':anonymous'}) || ($seeid)) {
- $sender=$contrib{$idx.':sendername'}.' at '.
- $contrib{$idx.':senderdomain'};
+ $sender=&Apache::loncommon::aboutmewrapper(
+ $plainname,
+ $contrib{$idx.':sendername'},
+ $contrib{$idx.':senderdomain'}).' ('.
+ $contrib{$idx.':sendername'}.' at '.
+ $contrib{$idx.':senderdomain'}.')';
if ($contrib{$idx.':anonymous'}) {
- $sender.=' (anonymous)';
+ $sender.=' [anonymous] '.
+ $screenname;
}
if ($seeid) {
if ($hidden) {
@@ -190,6 +215,10 @@ sub xmlend {
$symb.':::'.$idx.'">Hide</a>';
}
}
+ } else {
+ if ($screenname) {
+ $sender='<i>'.$screenname.'</i>';
+ }
}
$discussion.='<p><b>'.$sender.'</b> ('.
localtime($contrib{$idx.':timestamp'}).
@@ -198,11 +227,28 @@ sub xmlend {
}
}
}
- $discussion.='</address>';
+ unless ($discussiononly) {
+ $discussion.='</address>';
+ }
+ }
+ if ($discussiononly) {
+ $discussion.=(<<ENDDISCUSS);
+<form action="/adm/feedback" method="post" name="mailform">
+<input type="submit" name="discuss" value="Post Discussion" />
+<input type="submit" name="anondiscuss" value="Post Anonymous Discussion" />
+<input type="hidden" name="symb" value="$symb" />
+<input type="hidden" name="sendit" value="true" />
+<br />
+<font size="1">Note: in anonymous discussion, your name is visible only to
+course faculty</font><br />
+<textarea name=comment cols=60 rows=10 wrap=hard></textarea>
+</form>
+ENDDISCUSS
+ $discussion.=&Apache::lonfeedback::generate_preview_button();
}
}
}
- return $discussion.'</html>';
+ return $discussion.($discussiononly?'':'</html>');
}
sub tokeninputfield {
@@ -319,34 +365,40 @@ sub registerurl {
my $forcereg=shift;
my $target = shift;
my $result = '';
- if ($ENV{'request.publicaccess'}) {
- return
+
+ if ($target eq 'edit') {
+ $result .="<script>\n".
+ "if (typeof menu != 'undefined') {menu.currentURL=null;}\n".
+ &Apache::loncommon::browser_and_searcher_javascript().
+ "\n</script>\n";
+ }
+ if ((($ENV{'request.publicaccess'}) ||
+ (!&Apache::lonnet::is_on_map($ENV{'REQUEST_URI'}))) &&
+ (!$forcereg)) {
+ return $result.
'<script>function LONCAPAreg(){} function LONCAPAstale(){}</script>';
}
if ($Apache::lonxml::registered && !$forcereg) { return ''; }
$Apache::lonxml::registered=1;
+ my $nothing='';
+ if ($ENV{'browser.type'} eq 'explorer') { $nothing='javascript:void(0);'; }
+ my $timesync='menu.syncclock(1000*'.time.');';
if (($ENV{'REQUEST_URI'}!~/^\/(res\/)*adm\//) || ($forcereg)) {
my $hwkadd='';
- if ($ENV{'REQUEST_URI'}=~/\.(problem|exam|quiz|assess|survey|form)$/) {
+ if ($ENV{'request.filename'}=~/\.(problem|exam|quiz|assess|survey|form)$/) {
if (&Apache::lonnet::allowed('vgr',$ENV{'request.course.id'})) {
$hwkadd.=(<<ENDSUBM);
- menu.switchbutton
- (7,1,'subm.gif','view sub','missions',
- 'gocmd("/adm/grades","submission")');
+ menu.switchbutton(7,1,'subm.gif','view sub','missions','gocmd("/adm/grades","submission")');
ENDSUBM
}
if (&Apache::lonnet::allowed('mgr',$ENV{'request.course.id'})) {
$hwkadd.=(<<ENDGRDS);
- menu.switchbutton
- (7,2,'pgrd.gif','problem','grades',
- 'gocmd("/adm/grades","viewgrades")');
+ menu.switchbutton(7,2,'pgrd.gif','problem','grades','gocmd("/adm/grades","gradingmenu")');
ENDGRDS
}
if (&Apache::lonnet::allowed('opa',$ENV{'request.course.id'})) {
$hwkadd.=(<<ENDPARM);
- menu.switchbutton
- (7,3,'pparm.gif','problem','parms',
- 'gocmd("/adm/parmset","set")');
+ menu.switchbutton(7,3,'pparm.gif','problem','parms','gocmd("/adm/parmset","set")');
ENDPARM
}
}
@@ -356,9 +408,11 @@ ENDPARM
// BEGIN LON-CAPA Internal
function LONCAPAreg() {
- menu=window.open("","LONCAPAmenu","",false);
+ menu=window.open("$nothing","LONCAPAmenu","",false);
menu.clearTimeout(menu.menucltim);
+ $timesync
menu.currentURL=window.location.pathname;
+ menu.reloadURL=window.location.pathname;
menu.currentStale=0;
menu.clearbut(3,1);
menu.switchbutton
@@ -366,7 +420,7 @@ ENDPARM
menu.switchbutton
(8,1,'eval.gif','evaluate','this','gopost("/adm/evaluate",currentURL)');
menu.switchbutton
- (8,2,'fdbk.gif','feedback','on this','gopost("/adm/feedback",currentURL)');
+ (8,2,'fdbk.gif','feedback','discuss','gopost("/adm/feedback",currentURL)');
menu.switchbutton
(8,3,'prt.gif','prepare','printout','gopost("/adm/printout",currentURL)');
menu.switchbutton
@@ -383,10 +437,12 @@ ENDPARM
}
function LONCAPAstale() {
- menu=window.open("","LONCAPAmenu","",false);
+ menu=window.open("$nothing","LONCAPAmenu","",false);
menu.currentStale=1;
- menu.switchbutton
- (3,1,'reload.gif','return','location','go(currentURL)');
+ if (menu.reloadURL!='' && menu.reloadURL!= null) {
+ menu.switchbutton
+ (3,1,'reload.gif','return','location','go(reloadURL)');
+ }
menu.clearbut(7,1);
menu.clearbut(7,2);
menu.clearbut(7,3);
@@ -408,7 +464,8 @@ ENDREGTHIS
// BEGIN LON-CAPA Internal
function LONCAPAreg() {
- menu=window.open("","LONCAPAmenu","",false);
+ menu=window.open("$nothing","LONCAPAmenu","",false);
+ $timesync
menu.currentStale=1;
menu.clearbut(2,1);
menu.clearbut(2,3);
@@ -430,50 +487,6 @@ ENDREGTHIS
</script>
ENDDONOTREGTHIS
}
- if ($target eq 'edit') {
- # Javascript routines for construction space:
- # openbrowser and opensearcher will start the file browser
- # (lonindexer) and searcher (lonsearchcat) respectively.
- # Inputs are the name of the html form being used
- # and the name of the element the selected URL should
- # be placed in.
- $result .=<<"ENDBROWSERSCRIPT";
-<script>
- var editbrowser;
- function openbrowser(formname,elementname) {
- var url = '/res/?';
- if (editbrowser == null) {
- url += 'launch=1&';
- }
- url += 'catalogmode=interactive&';
- url += 'mode=edit&';
- url += 'form=' + formname + '&';
- url += 'element=' + elementname + '';
- var title = 'Browser';
- var options = 'scrollbars=1,resizable=1,menubar=0';
- options += ',width=700,height=600';
- editbrowser = open(url,title,options,'1');
- editbrowser.focus();
- }
- var editsearcher;
- function opensearcher(formname,elementname) {
- var url = '/adm/searchcat?';
- if (editsearcher == null) {
- url += 'launch=1&';
- }
- url += 'catalogmode=interactive&';
- url += 'mode=edit&';
- url += 'form=' + formname + '&';
- url += 'element=' + elementname + '';
- var title = 'Search';
- var options = 'scrollbars=1,resizable=1,menubar=0';
- options += ',width=700,height=600';
- editsearcher = open(url,title,options,'1');
- editsearcher.focus();
- }
-</script>
-ENDBROWSERSCRIPT
- }
return $result;
}
@@ -494,9 +507,26 @@ sub printalltags {
}
sub xmlparse {
- my ($target,$content_file_string,$safeinit,%style_for_target) = @_;
+ my ($request,$target,$content_file_string,$safeinit,%style_for_target) = @_;
+
+ &setup_globals($request,$target);
+#
+# do we have a course style file?
+#
+
+ if ($ENV{'request.course.id'}) {
+ my $bodytext=
+ $ENV{'course.'.$ENV{'request.course.id'}.'.default_xml_style'};
+ if ($bodytext) {
+ my $location=&Apache::lonnet::filelocation('',$bodytext);
+ my $styletext=&Apache::lonnet::getfile($location);
+ if ($styletext ne '-1') {
+ %style_for_target = (%style_for_target,
+ &Apache::style::styleparser($target,$styletext));
+ }
+ }
+ }
- &setup_globals($target);
#&printalltags();
my @pars = ();
my $pwd=$ENV{'request.filename'};
@@ -532,7 +562,7 @@ sub htmlclean {
my $output= $tree->as_HTML(undef,' ');
- $output=~s/\<(br|hr|img|meta|allow)([^\>\/]*)\>/\<$1$2 \/\>/gis;
+ $output=~s/\<(br|hr|img|meta|allow)(.*?)\>/\<$1$2 \/\>/gis;
$output=~s/\<\/(br|hr|img|meta|allow)\>//gis;
unless ($full) {
$output=~s/\<[\/]*(body|head|html)\>//gis;
@@ -543,6 +573,26 @@ sub htmlclean {
return $output;
}
+sub latex_special_symbols {
+ my ($current_token,$stack,$parstack)=@_;
+ $current_token=~s/\\/\\char92 /g;
+ $current_token=~s/\^/\\char94 /g;
+ $current_token=~s/\~/\\char126 /g;
+ $current_token=~s/(&[^a-z\#])/\\$1/g;
+ if ($current_token=~/ \#\w/) {
+ $current_token=~s/ \#(\w)/ \\#$1/;
+ } else {
+ $current_token=~s/([^&])(\#)/$1\\$2/g;
+ }
+ $current_token=~s/(\$|_|{|})/\\$1/g;
+ $current_token=~s/\\char92 /\\texttt{\\char92}/g;
+ $current_token=~s/>/\$>\$/g; #more
+ $current_token=~s/</\$<\$/g; #less
+ if ($current_token=~m/\d%/) {$current_token =~ s/(\d)%/$1\\%/g;} #percent after digit
+ if ($current_token=~m/\s%/) {$current_token =~ s/(\s)%/$1\\%/g;} #persent after space
+ return $current_token;
+}
+
sub inner_xmlparse {
my ($target,$stack,$parstack,$pars,$safeeval,$style_for_target)=@_;
my $finaloutput = '';
@@ -552,7 +602,12 @@ sub inner_xmlparse {
while ($token = $$pars['-1']->get_token) {
if (($token->[0] eq 'T') || ($token->[0] eq 'C') || ($token->[0] eq 'D') ) {
if ($metamode<1) {
- $result=$token->[1];
+ my $text=$token->[1];
+ if ($token->[0] eq 'C' && $target eq 'tex') {
+ $text = '%'.$text;
+ $text =~ s/[\n\r]//g;
+ }
+ $result.=$text;
}
} elsif ($token->[0] eq 'PI') {
if ($metamode<1) {
@@ -610,18 +665,28 @@ sub inner_xmlparse {
#evaluate variable refs in result
if ($result ne "") {
if ( $#$parstack > -1 ) {
- if ($Apache::lonxml::redirection) {
- $Apache::lonxml::outputstack['-1'] .=
- &Apache::run::evaluate($result,$safeeval,$$parstack['-1']);
- } else {
- $finaloutput .= &Apache::run::evaluate($result,$safeeval,
- $$parstack['-1']);
- }
+ $result=&Apache::run::evaluate($result,$safeeval,$$parstack[-1]);
} else {
- $finaloutput .= &Apache::run::evaluate($result,$safeeval,'');
+ $result= &Apache::run::evaluate($result,$safeeval,'');
+ }
+ }
+ if (($token->[0] eq 'T') || ($token->[0] eq 'C') || ($token->[0] eq 'D') ) {
+ if ($target eq 'tex') {
+ $result=&latex_special_symbols($result,$stack,$parstack);
}
- $result = '';
- }
+ }
+
+ # Encode any high ASCII characters
+ if (!$Apache::lonxml::prevent_entity_encode) {
+ $result=&HTML::Entities::encode($result,"\200-\377");
+ }
+ if ($Apache::lonxml::redirection) {
+ $Apache::lonxml::outputstack['-1'] .= $result;
+ } else {
+ $finaloutput.=$result;
+ }
+ $result = '';
+
if ($token->[0] eq 'E') {
&end_tag($stack,$parstack,$token);
}
@@ -634,6 +699,7 @@ sub inner_xmlparse {
# $finaloutput.=&endredirection;
# }
+
if (($ENV{'QUERY_STRING'}) && ($target eq 'web')) {
$finaloutput=&afterburn($finaloutput);
}
@@ -736,13 +802,13 @@ sub callsub {
}
if (!$deleted) {
if ($space) {
- #&Apache::lonxml::debug("Calling sub $sub in $space $metamode");
+ &Apache::lonxml::debug("Calling sub $sub in $space $metamode");
$sub1="$space\:\:$sub";
($currentstring,$nodefault) = &$sub1($target,$token,$tagstack,
$parstack,$parser,$safeeval,
$style);
} else {
- #&Apache::lonxml::debug("NOT Calling sub $sub in $space $metamode");
+ &Apache::lonxml::debug("NOT Calling sub $sub in $space $metamode");
if ($metamode <1) {
if (defined($token->[4]) && ($metamode < 1)) {
$currentstring = $token->[4];
@@ -776,7 +842,8 @@ sub callsub {
}
sub setup_globals {
- my ($target)=@_;
+ my ($request,$target)=@_;
+ $Apache::lonxml::request=$request;
$Apache::lonxml::registered = 0;
@Apache::lonxml::pwd=();
@Apache::lonxml::extlinks=();
@@ -805,6 +872,11 @@ sub setup_globals {
$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;
@@ -928,8 +1000,35 @@ sub decreasedepth {
#print "<br />e $Apache::lonxml::depth : $Apache::lonxml::olddepth : $token->[1] : $curdepth\n";
}
-sub get_all_text {
+sub get_all_text_unbalanced {
+#there is a copy of this in lonpublisher.pm
+ my($tag,$pars)= @_;
+ my $token;
+ my $result='';
+ $tag='<'.$tag.'>';
+ while ($token = $$pars[-1]->get_token) {
+ if (($token->[0] eq 'T')||($token->[0] eq 'C')||($token->[0] eq 'D')) {
+ $result.=$token->[1];
+ } elsif ($token->[0] eq 'PI') {
+ $result.=$token->[2];
+ } elsif ($token->[0] eq 'S') {
+ $result.=$token->[4];
+ } elsif ($token->[0] eq 'E') {
+ $result.=$token->[2];
+ }
+ if ($result =~ /(.*)$tag(.*)/) {
+ &Apache::lonxml::debug('Got a winner with leftovers ::'.$2);
+ &Apache::lonxml::debug('Result is :'.$1);
+ $result=$1;
+ my $redo=$tag.$2;
+ &Apache::lonxml::newparser($pars,\$redo);
+ last;
+ }
+ }
+ return $result
+}
+sub get_all_text {
my($tag,$pars)= @_;
my $depth=0;
my $token;
@@ -978,7 +1077,7 @@ sub get_all_text {
sub newparser {
my ($parser,$contentref,$dir) = @_;
- push (@$parser,HTML::TokeParser->new($contentref));
+ push (@$parser,HTML::LCParser->new($contentref));
$$parser['-1']->xml_mode('1');
if ( $dir eq '' ) {
push (@Apache::lonxml::pwd, $Apache::lonxml::pwd[$#Apache::lonxml::pwd]);
@@ -1090,17 +1189,21 @@ sub inserteditinfo {
my ($result,$filecontents)=@_;
$filecontents = &HTML::Entities::encode($filecontents);
# my $editheader='<a href="#editsection">Edit below</a><hr />';
+ my $buttons=(<<BUTTONS);
+<input type="submit" name="attemptclean"
+ value="Save and then attempt to clean HTML" />
+<input type="submit" name="savethisfile" value="Save this" />
+<input type="submit" name="viewmode" value="View" />
+BUTTONS
my $editfooter=(<<ENDFOOTER);
<hr />
<a name="editsection" />
<form method="post">
+<input type="hidden" name="editmode" value="Edit" />
+$buttons<br />
<textarea cols="80" rows="40" name="filecont">$filecontents</textarea>
+<br />$buttons
<br />
-<input type="hidden" name="showmode" value="Edit" />
-<input type="submit" name="attemptclean"
- value="Save and then attempt to clean HTML" />
-<input type="submit" name="savethisfile" value="Save this" />
-<input type="submit" name="showmode" value="View" />
</form>
ENDFOOTER
# $result=~s/(\<body[^\>]*\>)/$1$editheader/is;
@@ -1179,7 +1282,7 @@ ENDNOTFOUND
$filecontents='';
if ($ENV{'request.state'} ne 'published') {
$filecontents=&createnewhtml();
- $ENV{'form.showmode'}='Edit'; #force edit mode
+ $ENV{'form.editmode'}='Edit'; #force edit mode
}
} else {
unless ($ENV{'request.state'} eq 'published') {
@@ -1187,8 +1290,9 @@ ENDNOTFOUND
$filecontents=&htmlclean($filecontents,1);
}
}
- if ($ENV{'form.showmode'} ne 'Edit') {
- $result = &Apache::lonxml::xmlparse($target,$filecontents,'',%mystyle);
+ if (!$ENV{'form.editmode'} || $ENV{'form.viewmode'}) {
+ $result = &Apache::lonxml::xmlparse($request,$target,$filecontents,
+ '',%mystyle);
}
}
@@ -1196,8 +1300,11 @@ ENDNOTFOUND
# Edit action? Insert editing commands
#
unless ($ENV{'request.state'} eq 'published') {
- if ($ENV{'form.showmode'} eq 'Edit') {
- $result='<html><body bgcolor="#FFFFFF"></body></html>';
+ if ($ENV{'form.editmode'} && (!($ENV{'form.viewmode'}))) {
+ my $displayfile=$request->uri;
+ $displayfile=~s/^\/[^\/]*//;
+ $result='<html><body bgcolor="#FFFFFF"><h3>'.$displayfile.
+ '</h3></body></html>';
$result=&inserteditinfo($result,$filecontents);
}
}
@@ -1212,13 +1319,14 @@ ENDNOTFOUND
sub debug {
if ($Apache::lonxml::debug eq 1) {
$|=1;
- print("DEBUG:".join('<br />',@_)."<br />\n");
+ print("DEBUG:".&HTML::Entities::encode($_[0])."<br />\n");
}
}
sub error {
if (($Apache::lonxml::debug eq 1) || ($ENV{'request.state'} eq 'construct') ) {
- print "<b>ERROR:</b>".join('<br />',@_)."<br />\n";
+ # If printing in construction space, put the error inside <pre></pre>
+ print "<b>ERROR:</b>".join("\n",@_)."\n";
} else {
print "<b>An Error occured while processing this resource. The instructor has been notified.</b> <br />";
#notify author