Annotation of loncom/xml/lonxml.pm, revision 1.262
1.2 sakharuk 1: # The LearningOnline Network with CAPA
1.3 sakharuk 2: # XML Parser Module
1.2 sakharuk 3: #
1.262 ! matthew 4: # $Id: lonxml.pm,v 1.261 2003/06/10 14:33:32 albertel Exp $
1.139 www 5: #
6: # Copyright Michigan State University Board of Trustees
7: #
8: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
9: #
10: # LON-CAPA is free software; you can redistribute it and/or modify
11: # it under the terms of the GNU General Public License as published by
12: # the Free Software Foundation; either version 2 of the License, or
13: # (at your option) any later version.
14: #
15: # LON-CAPA is distributed in the hope that it will be useful,
16: # but WITHOUT ANY WARRANTY; without even the implied warranty of
17: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18: # GNU General Public License for more details.
19: #
20: # You should have received a copy of the GNU General Public License
21: # along with LON-CAPA; if not, write to the Free Software
22: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23: #
24: # /home/httpd/html/adm/gpl.txt
25: #
26: # http://www.lon-capa.org/
27: #
28: # Copyright for TtHfunc and TtMfunc by Ian Hutchinson.
29: # TtHfunc and TtMfunc (the "Code") may be compiled and linked into
30: # binary executable programs or libraries distributed by the
31: # Michigan State University (the "Licensee"), but any binaries so
32: # distributed are hereby licensed only for use in the context
33: # of a program or computational system for which the Licensee is the
34: # primary author or distributor, and which performs substantial
35: # additional tasks beyond the translation of (La)TeX into HTML.
36: # The C source of the Code may not be distributed by the Licensee
37: # to any other parties under any circumstances.
38: #
1.3 sakharuk 39: # last modified 06/26/00 by Alexander Sakharuk
1.33 www 40: # 11/6 Gerd Kortemeyer
1.45 www 41: # 6/1/1 Gerd Kortemeyer
1.56 albertel 42: # 2/21,3/13 Guy
1.68 www 43: # 3/29,5/4 Gerd Kortemeyer
1.78 www 44: # 5/26 Gerd Kortemeyer
1.80 harris41 45: # 5/27 H. K. Ng
1.89 www 46: # 6/2,6/3,6/8,6/9 Gerd Kortemeyer
1.93 ng 47: # 6/12,6/13 H. K. Ng
1.95 www 48: # 6/16 Gerd Kortemeyer
1.104 ng 49: # 7/27 H. K. Ng
1.127 www 50: # 8/7,8/9,8/10,8/11,8/15,8/16,8/17,8/18,8/20,8/23,8/24 Gerd Kortemeyer
1.130 www 51: # Guy Albertelli
52: # 9/26 Gerd Kortemeyer
1.143 www 53: # Dec Guy Albertelli
54: # YEAR=2002
55: # 1/1 Gerd Kortemeyer
1.145 www 56: # 1/2 Matthew Hall
57: # 1/3 Gerd Kortemeyer
1.143 www 58: #
1.2 sakharuk 59:
1.4 albertel 60: package Apache::lonxml;
1.33 www 61: use vars
1.205 www 62: qw(@pwd @outputstack $redirection $import @extlinks $metamode $evaluate %insertlist @namespace $prevent_entity_encode $errorcount $warningcount);
1.1 sakharuk 63: use strict;
1.167 albertel 64: use HTML::LCParser();
1.161 albertel 65: use HTML::TreeBuilder();
66: use HTML::Entities();
67: use Safe();
68: use Safe::Hole();
69: use Math::Cephes();
70: use Math::Random();
71: use Opcode();
1.72 albertel 72:
73: sub register {
1.141 albertel 74: my ($space,@taglist) = @_;
75: foreach my $temptag (@taglist) {
76: push(@{ $Apache::lonxml::alltags{$temptag} },$space);
1.72 albertel 77: }
78: }
79:
1.141 albertel 80: sub deregister {
81: my ($space,@taglist) = @_;
82: foreach my $temptag (@taglist) {
83: my $tempspace = $Apache::lonxml::alltags{$temptag}[-1];
84: if ($tempspace eq $space) {
85: pop(@{ $Apache::lonxml::alltags{$temptag} });
86: }
87: }
1.142 albertel 88: #&printalltags();
1.141 albertel 89: }
90:
1.46 www 91: use Apache::Constants qw(:common);
1.161 albertel 92: use Apache::lontexconvert();
93: use Apache::style();
94: use Apache::run();
95: use Apache::londefdef();
96: use Apache::scripttag();
97: use Apache::edit();
98: use Apache::lonnet();
99: use Apache::File();
100: use Apache::loncommon();
1.198 www 101: use Apache::lonfeedback();
1.200 www 102: use Apache::lonmsg();
1.217 matthew 103: use Apache::loncacc();
1.79 www 104:
1.72 albertel 105: #================================================== Main subroutine: xmlparse
106: #debugging control, to turn on debugging modify the correct handler
107: $Apache::lonxml::debug=0;
1.206 albertel 108:
109: # keeps count of the number of warnings and errors generated in a parse
110: $warningcount=0;
111: $errorcount=0;
1.72 albertel 112:
113: #path to the directory containing the file currently being processed
114: @pwd=();
115:
116: #these two are used for capturing a subset of the output for later processing,
117: #don't touch them directly use &startredirection and &endredirection
118: @outputstack = ();
119: $redirection = 0;
120:
121: #controls wheter the <import> tag actually does
122: $import = 1;
123: @extlinks=();
124:
125: # meta mode is a bit weird only some output is to be turned off
126: #<output> tag turns metamode off (defined in londefdef.pm)
127: $metamode = 0;
128:
129: # turns on and of run::evaluate actually derefencing var refs
130: $evaluate = 1;
1.7 albertel 131:
1.74 albertel 132: # data structure for eidt mode, determines what tags can go into what other tags
133: %insertlist=();
1.68 www 134:
1.99 albertel 135: # stores the list of active tag namespaces
1.76 albertel 136: @namespace=();
137:
1.169 albertel 138: # if 0 all high ASCII characters will be encoded into HTML Entities
139: $prevent_entity_encode=0;
140:
1.99 albertel 141: # has the dynamic menu been updated to know about this resource
142: $Apache::lonxml::registered=0;
143:
1.172 albertel 144: # a pointer the the Apache request object
145: $Apache::lonxml::request='';
146:
1.216 sakharuk 147: # a problem number counter, and check on ether it is used
1.237 sakharuk 148: $Apache::lonxml::counter=1;
1.204 albertel 149: $Apache::lonxml::counter_changed=0;
150:
1.212 albertel 151: #internal check on whether to look at style defs
152: $Apache::lonxml::usestyle=1;
1.260 albertel 153:
154: #locations used to store the parameter string for style substitutions
155: $Apache::lonxml::style_values='';
156: $Apache::lonxml::style_end_values='';
1.212 albertel 157:
1.68 www 158: sub xmlbegin {
159: my $output='';
160: if ($ENV{'browser.mathml'}) {
161: $output='<?xml version="1.0"?>'
162: .'<?xml-stylesheet type="text/css" href="/adm/MathML/mathml.css"?>'
163: .'<!DOCTYPE html SYSTEM "/adm/MathML/mathml.dtd" '
164: .'[<!ENTITY mathns "http://www.w3.org/1998/Math/MathML">]>'
165: .'<html xmlns:math="http://www.w3.org/1998/Math/MathML" '
166: .'xmlns="http://www.w3.org/TR/REC-html40">';
167: } else {
168: $output='<html>';
169: }
170: return $output;
171: }
172:
173: sub xmlend {
1.194 www 174: my ($discussiononly,$symb)=@_;
1.103 www 175: my $discussion='';
176: if ($ENV{'request.course.id'}) {
1.109 www 177: my $crs='/'.$ENV{'request.course.id'};
178: if ($ENV{'request.course.sec'}) {
179: $crs.='_'.$ENV{'request.course.sec'};
180: }
181: $crs=~s/\_/\//g;
182: my $seeid=&Apache::lonnet::allowed('rin',$crs);
1.194 www 183: unless ($symb) {
184: $symb=&Apache::lonnet::symbread();
185: }
1.103 www 186: if ($symb) {
187: my %contrib=&Apache::lonnet::restore($symb,$ENV{'request.course.id'},
188: $ENV{'course.'.$ENV{'request.course.id'}.'.domain'},
189: $ENV{'course.'.$ENV{'request.course.id'}.'.num'});
190: if ($contrib{'version'}) {
1.194 www 191: unless ($discussiononly) {
192: $discussion.=
193: '<address><hr />';
194: }
1.103 www 195: my $idx;
196: for ($idx=1;$idx<=$contrib{'version'};$idx++) {
1.110 www 197: my $hidden=($contrib{'hidden'}=~/\.$idx\./);
1.222 www 198: my $deleted=($contrib{'deleted'}=~/\.$idx\./);
199: unless ((($hidden) && (!$seeid)) || ($deleted)) {
1.110 www 200: my $message=$contrib{$idx.':message'};
201: $message=~s/\n/\<br \/\>/g;
1.186 www 202: $message=&Apache::lontexconvert::msgtexconverted($message);
1.243 www 203: if ($contrib{$idx.':attachmenturl'}) {
204: my ($fname,$ft)
205: =($contrib{$idx.':attachmenturl'}=~/\/(\w+)\.(\w+)$/);
206: $message.='<p>Attachment: <a href="'.
207: &Apache::lonnet::tokenwrapper($contrib{$idx.':attachmenturl'}).
208: '"><tt>'.$fname.'.'.$ft.'</tt></a>';
209: }
1.110 www 210: if ($message) {
211: if ($hidden) {
212: $message='<font color="#888888">'.$message.'</font>';
213: }
1.196 www 214: my $screenname=&Apache::loncommon::screenname(
215: $contrib{$idx.':sendername'},
216: $contrib{$idx.':senderdomain'});
217: my $plainname=&Apache::loncommon::nickname(
218: $contrib{$idx.':sendername'},
219: $contrib{$idx.':senderdomain'});
220:
1.109 www 221: my $sender='Anonymous';
222: if ((!$contrib{$idx.':anonymous'}) || ($seeid)) {
1.194 www 223: $sender=&Apache::loncommon::aboutmewrapper(
1.196 www 224: $plainname,
1.194 www 225: $contrib{$idx.':sendername'},
226: $contrib{$idx.':senderdomain'}).' ('.
1.164 www 227: $contrib{$idx.':sendername'}.' at '.
228: $contrib{$idx.':senderdomain'}.')';
1.109 www 229: if ($contrib{$idx.':anonymous'}) {
1.164 www 230: $sender.=' [anonymous] '.
1.196 www 231: $screenname;
1.110 www 232: }
233: if ($seeid) {
234: if ($hidden) {
235: $sender.=' <a href="/adm/feedback?unhide='.
236: $symb.':::'.$idx.'">Make Visible</a>';
237: } else {
238: $sender.=' <a href="/adm/feedback?hide='.
239: $symb.':::'.$idx.'">Hide</a>';
1.222 www 240: }
241: $sender.=' <a href="/adm/feedback?deldisc='.
242: $symb.':::'.$idx.'">Delete</a>';
243: }
1.164 www 244: } else {
1.196 www 245: if ($screenname) {
246: $sender='<i>'.$screenname.'</i>';
1.164 www 247: }
1.109 www 248: }
249: $discussion.='<p><b>'.$sender.'</b> ('.
1.103 www 250: localtime($contrib{$idx.':timestamp'}).
251: '):<blockquote>'.$message.
1.110 www 252: '</blockquote></p>';
253: }
254: }
1.103 www 255: }
1.194 www 256: unless ($discussiononly) {
257: $discussion.='</address>';
258: }
259: }
260: if ($discussiononly) {
1.195 www 261: $discussion.=(<<ENDDISCUSS);
1.243 www 262: <form action="/adm/feedback" method="post" name="mailform" enctype="multipart/form-data">
1.195 www 263: <input type="submit" name="discuss" value="Post Discussion" />
264: <input type="submit" name="anondiscuss" value="Post Anonymous Discussion" />
265: <input type="hidden" name="symb" value="$symb" />
266: <input type="hidden" name="sendit" value="true" />
267: <br />
268: <font size="1">Note: in anonymous discussion, your name is visible only to
269: course faculty</font><br />
270: <textarea name=comment cols=60 rows=10 wrap=hard></textarea>
1.242 www 271: <p>
272: Attachment (128 KB max size): <input type="file" name="attachment" />
273: </p>
1.195 www 274: </form>
275: ENDDISCUSS
1.198 www 276: $discussion.=&Apache::lonfeedback::generate_preview_button();
1.103 www 277: }
278: }
279: }
1.194 www 280: return $discussion.($discussiononly?'':'</html>');
1.119 www 281: }
282:
283: sub tokeninputfield {
1.120 www 284: my $defhost=$Apache::lonnet::perlvar{'lonHostID'};
285: $defhost=~tr/a-z/A-Z/;
1.119 www 286: return (<<ENDINPUTFIELD)
1.226 albertel 287: <script type="text/javascript">
1.120 www 288: function updatetoken() {
289: var comp=new Array;
290: var barcode=unescape(document.tokeninput.barcode.value);
291: comp=barcode.split('*');
292: if (typeof(comp[0])!="undefined") {
293: document.tokeninput.codeone.value=comp[0];
294: }
295: if (typeof(comp[1])!="undefined") {
296: document.tokeninput.codetwo.value=comp[1];
297: }
298: if (typeof(comp[2])!="undefined") {
299: comp[2]=comp[2].toUpperCase();
300: document.tokeninput.codethree.value=comp[2];
301: }
302: document.tokeninput.barcode.value='';
303: }
304: </script>
305: <form method="post" name="tokeninput">
1.119 www 306: <table border="2" bgcolor="#FFFFBB">
307: <tr><th>DocID Checkin</th></tr>
308: <tr><td>
309: <table>
310: <tr>
311: <td>Scan in Barcode</td>
1.120 www 312: <td><input type="text" size="22" name="barcode"
313: onChange="updatetoken()"/></td>
1.119 www 314: </tr>
315: <tr><td><i>or</i> Type in DocID</td>
316: <td>
317: <input type="text" size="5" name="codeone" />
1.120 www 318: <b><font size="+2">*</font></b>
1.119 www 319: <input type="text" size="5" name="codetwo" />
1.120 www 320: <b><font size="+2">*</font></b>
321: <input type="text" size="10" name="codethree" value="$defhost"
322: onChange="this.value=this.value.toUpperCase()" />
1.119 www 323: </td></tr>
324: </table>
325: </td></tr>
326: <tr><td><input type="submit" value="Check in DocID" /></td></tr>
327: </table>
328: </form>
329: ENDINPUTFIELD
1.112 www 330: }
331:
1.116 www 332: sub maketoken {
1.118 www 333: my ($symb,$tuname,$tudom,$tcrsid)=@_;
1.112 www 334: unless ($symb) {
335: $symb=&Apache::lonnet::symbread();
336: }
337: unless ($tuname) {
338: $tuname=$ENV{'user.name'};
339: $tudom=$ENV{'user.domain'};
340: $tcrsid=$ENV{'request.course.id'};
341: }
1.116 www 342:
1.118 www 343: return &Apache::lonnet::checkout($symb,$tuname,$tudom,$tcrsid);
344: }
345:
346: sub printtokenheader {
1.133 albertel 347: my ($target,$token,$tsymb,$tcrsid,$tudom,$tuname)=@_;
1.116 www 348: unless ($token) { return ''; }
1.118 www 349:
1.133 albertel 350: my ($symb,$courseid,$domain,$name) = &Apache::lonxml::whichuser();
351: unless ($tsymb) {
352: $tsymb=$symb;
1.118 www 353: }
354: unless ($tuname) {
1.133 albertel 355: $tuname=$name;
356: $tudom=$domain;
357: $tcrsid=$courseid;
1.118 www 358: }
1.114 www 359:
360: my %reply=&Apache::lonnet::get('environment',
361: ['firstname','middlename','lastname','generation'],
362: $tudom,$tuname);
363: my $plainname=$reply{'firstname'}.' '.
364: $reply{'middlename'}.' '.
365: $reply{'lastname'}.' '.
366: $reply{'generation'};
367:
1.112 www 368: if ($target eq 'web') {
1.145 www 369: my %idhash=&Apache::lonnet::idrget($tudom,($tuname));
1.115 www 370: return
1.221 albertel 371: '<img align="right" src="/cgi-bin/barcode.png?encode='.$token.'" />'.
1.115 www 372: 'Checked out for '.$plainname.
1.114 www 373: '<br />User: '.$tuname.' at '.$tudom.
1.145 www 374: '<br />ID: '.$idhash{$tuname}.
1.117 www 375: '<br />CourseID: '.$tcrsid.
1.145 www 376: '<br />Course: '.$ENV{'course.'.$tcrsid.'.description'}.
1.114 www 377: '<br />DocID: '.$token.
1.116 www 378: '<br />Time: '.localtime().'<hr />';
1.112 www 379: } else {
1.121 albertel 380: return $token;
1.112 www 381: }
1.68 www 382: }
383:
1.70 www 384: sub fontsettings() {
385: my $headerstring='';
386: if (($ENV{'browser.os'} eq 'mac') && (!$ENV{'browser.mathml'})) {
1.248 albertel 387: $headerstring.=
388: '<meta Content-Type="text/html; charset=x-mac-roman">';
389: } elsif (!$ENV{'browser.mathml'}) {
390: $headerstring.=
391: '<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />';
1.70 www 392: }
393: return $headerstring;
1.68 www 394: }
395:
1.48 albertel 396: sub printalltags {
397: my $temp;
398: foreach $temp (sort keys %Apache::lonxml::alltags) {
1.141 albertel 399: &Apache::lonxml::debug("$temp -- ".
400: join(',',@{ $Apache::lonxml::alltags{$temp} }));
1.48 albertel 401: }
402: }
1.31 sakharuk 403:
1.3 sakharuk 404: sub xmlparse {
1.172 albertel 405: my ($request,$target,$content_file_string,$safeinit,%style_for_target) = @_;
1.96 albertel 406:
1.172 albertel 407: &setup_globals($request,$target);
1.232 albertel 408: &Apache::inputtags::initialize_inputtags();
409: &Apache::outputtags::initialize_outputtags();
410: &Apache::edit::initialize_edit();
1.244 albertel 411:
1.178 www 412: #
413: # do we have a course style file?
414: #
415:
1.208 albertel 416: if ($ENV{'request.course.id'} && $ENV{'request.state'} ne 'construct') {
1.178 www 417: my $bodytext=
418: $ENV{'course.'.$ENV{'request.course.id'}.'.default_xml_style'};
419: if ($bodytext) {
420: my $location=&Apache::lonnet::filelocation('',$bodytext);
421: my $styletext=&Apache::lonnet::getfile($location);
422: if ($styletext ne '-1') {
423: %style_for_target = (%style_for_target,
424: &Apache::style::styleparser($target,$styletext));
425: }
426: }
427: }
1.255 sakharuk 428: #&printalltags();
1.16 albertel 429: my @pars = ();
1.23 albertel 430: my $pwd=$ENV{'request.filename'};
431: $pwd =~ s:/[^/]*$::;
432: &newparser(\@pars,\$content_file_string,$pwd);
1.24 sakharuk 433:
1.3 sakharuk 434: my $safeeval = new Safe;
1.40 albertel 435: my $safehole = new Safe::Hole;
1.82 ng 436: &init_safespace($target,$safeeval,$safehole,$safeinit);
1.3 sakharuk 437: #-------------------- Redefinition of the target in the case of compound target
438:
439: ($target, my @tenta) = split('&&',$target);
440:
1.150 albertel 441: my @stack = ();
1.3 sakharuk 442: my @parstack = ();
1.17 albertel 443: &initdepth;
1.67 www 444:
1.101 albertel 445: my $finaloutput = &inner_xmlparse($target,\@stack,\@parstack,\@pars,
446: $safeeval,\%style_for_target);
1.255 sakharuk 447:
1.125 www 448: if ($ENV{'request.uri'}) {
449: &writeallows($ENV{'request.uri'});
450: }
1.204 albertel 451: if ($Apache::lonxml::counter_changed) { &store_counter() }
1.3 sakharuk 452: return $finaloutput;
1.106 www 453: }
454:
455: sub htmlclean {
1.107 www 456: my ($raw,$full)=@_;
1.106 www 457:
458: my $tree = HTML::TreeBuilder->new;
459: $tree->ignore_unknown(0);
1.140 albertel 460:
1.106 www 461: $tree->parse($raw);
462:
1.107 www 463: my $output= $tree->as_HTML(undef,' ');
1.140 albertel 464:
1.161 albertel 465: $output=~s/\<(br|hr|img|meta|allow)(.*?)\>/\<$1$2 \/\>/gis;
1.111 www 466: $output=~s/\<\/(br|hr|img|meta|allow)\>//gis;
1.107 www 467: unless ($full) {
468: $output=~s/\<[\/]*(body|head|html)\>//gis;
469: }
1.106 www 470:
471: $tree = $tree->delete;
472:
473: return $output;
1.15 albertel 474: }
475:
1.191 albertel 476: sub latex_special_symbols {
1.229 sakharuk 477: my ($current_token,$stack,$parstack,$where)=@_;
1.235 sakharuk 478: if ($where eq 'header') {
1.238 albertel 479: $current_token =~ s/(\\|_|\^)/ /g;
480: $current_token =~ s/(\$|%|\#|&|\{|\})/\\$1/g;
1.229 sakharuk 481: } else {
1.238 albertel 482: $current_token=~s/\\ /\\char92 /g;
483: $current_token=~s/\^/\\char94 /g;
484: $current_token=~s/\~/\\char126 /g;
1.246 albertel 485: $current_token=~s/(&[^A-Za-z\#])/\\$1/g;
1.238 albertel 486: $current_token=~s/([^&])\#/$1\\#/g;
487: $current_token=~s/(\$|_|{|})/\\$1/g;
488: $current_token=~s/\\char92 /\\texttt{\\char92}/g;
489: $current_token=~s/(>|<)/\$$1\$/g; #more or less
490: if ($current_token=~m/\d%/) {$current_token =~ s/(\d)%/$1\\%/g;} #percent after digit
491: if ($current_token=~m/\s%/) {$current_token =~ s/(\s)%/$1\\%/g;} #persent after space
1.229 sakharuk 492: }
1.188 sakharuk 493: return $current_token;
494: }
495:
1.101 albertel 496: sub inner_xmlparse {
497: my ($target,$stack,$parstack,$pars,$safeeval,$style_for_target)=@_;
498: my $finaloutput = '';
499: my $result;
500: my $token;
1.258 albertel 501: my $dontpop=0;
1.101 albertel 502: while ( $#$pars > -1 ) {
503: while ($token = $$pars['-1']->get_token) {
1.261 albertel 504: if (($token->[0] eq 'T') || ($token->[0] eq 'C') ) {
1.101 albertel 505: if ($metamode<1) {
1.190 albertel 506: my $text=$token->[1];
1.193 albertel 507: if ($token->[0] eq 'C' && $target eq 'tex') {
1.239 sakharuk 508: $text = '';
509: # $text = '%'.$text."\n";
1.182 sakharuk 510: }
1.190 albertel 511: $result.=$text;
1.101 albertel 512: }
1.261 albertel 513: } elsif (($token->[0] eq 'D')) {
514: if ($metamode<1 && $target eq 'web') {
515: my $text=$token->[1];
516: $result.=$text;
517: }
1.101 albertel 518: } elsif ($token->[0] eq 'PI') {
1.261 albertel 519: if ($metamode<1 && $target eq 'web') {
1.101 albertel 520: $result=$token->[2];
521: }
522: } elsif ($token->[0] eq 'S') {
1.140 albertel 523: # add tag to stack
1.101 albertel 524: push (@$stack,$token->[1]);
525: # add parameters list to another stack
526: push (@$parstack,&parstring($token));
1.140 albertel 527: &increasedepth($token);
1.212 albertel 528: if ($Apache::lonxml::usestyle &&
529: exists($$style_for_target{$token->[1]})) {
530: $Apache::lonxml::usestyle=0;
531: my $string=$$style_for_target{$token->[1]}.
532: '<LONCAPA_INTERNAL_TURN_STYLE_ON />';
533: &Apache::lonxml::newparser($pars,\$string);
1.257 albertel 534: $Apache::lonxml::style_values=$$parstack[-1];
1.259 albertel 535: $Apache::lonxml::style_end_values=$$parstack[-1];
1.101 albertel 536: } else {
537: $result = &callsub("start_$token->[1]", $target, $token, $stack,
538: $parstack, $pars, $safeeval, $style_for_target);
1.140 albertel 539: }
1.101 albertel 540: } elsif ($token->[0] eq 'E') {
1.212 albertel 541: if ($Apache::lonxml::usestyle &&
542: exists($$style_for_target{'/'."$token->[1]"})) {
543: $Apache::lonxml::usestyle=0;
544: my $string=$$style_for_target{'/'.$token->[1]}.
1.258 albertel 545: '<LONCAPA_INTERNAL_TURN_STYLE_ON end="'.$token->[1].'" />';
1.212 albertel 546: &Apache::lonxml::newparser($pars,\$string);
1.259 albertel 547: $Apache::lonxml::style_values=$Apache::lonxml::style_end_values;
548: $Apache::lonxml::style_end_values='';
1.258 albertel 549: $dontpop=1;
1.101 albertel 550: } else {
1.258 albertel 551: #clear out any tags that didn't end
552: while ($token->[1] ne $$stack['-1'] && ($#$stack > -1)) {
553: my $lasttag=$$stack[-1];
554: if ($token->[1] =~ /^$lasttag$/i) {
555: &Apache::lonxml::warning('Using tag </'.$token->[1].'> on line '.$token->[3].' as end tag to <'.$$stack[-1].'>');
556: last;
557: } else {
558: &Apache::lonxml::warning('Found tag </'.$token->[1].'> on line '.$token->[3].' when looking for </'.$$stack[-1].'> in file');
559: &end_tag($stack,$parstack,$token);
560: }
561: }
562: $result = &callsub("end_$token->[1]", $target, $token, $stack,
563: $parstack, $pars,$safeeval, $style_for_target);
1.101 albertel 564: }
565: } else {
566: &Apache::lonxml::error("Unknown token event :$token->[0]:$token->[1]:");
567: }
568: #evaluate variable refs in result
569: if ($result ne "") {
1.257 albertel 570: my $extras;
571: if (!$Apache::lonxml::usestyle) {
572: $extras=$Apache::lonxml::style_values;
573: }
1.101 albertel 574: if ( $#$parstack > -1 ) {
1.257 albertel 575: $result=&Apache::run::evaluate($result,$safeeval,$extras.$$parstack[-1]);
1.101 albertel 576: } else {
1.257 albertel 577: $result= &Apache::run::evaluate($result,$safeeval,$extras);
1.101 albertel 578: }
1.163 albertel 579: }
1.190 albertel 580: if (($token->[0] eq 'T') || ($token->[0] eq 'C') || ($token->[0] eq 'D') ) {
1.249 albertel 581: #Style file definitions should be correct
1.250 albertel 582: if ($target eq 'tex' && ($Apache::lonxml::usestyle)) {
1.249 albertel 583: $result=&latex_special_symbols($result,$stack,$parstack);
584: }
1.190 albertel 585: }
586:
1.169 albertel 587: # Encode any high ASCII characters
588: if (!$Apache::lonxml::prevent_entity_encode) {
589: $result=&HTML::Entities::encode($result,"\200-\377");
590: }
591: if ($Apache::lonxml::redirection) {
592: $Apache::lonxml::outputstack['-1'] .= $result;
593: } else {
594: $finaloutput.=$result;
595: }
596: $result = '';
597:
1.258 albertel 598: if ($token->[0] eq 'E' && !$dontpop) {
1.101 albertel 599: &end_tag($stack,$parstack,$token);
600: }
1.258 albertel 601: $dontpop=0;
1.224 albertel 602: }
1.212 albertel 603: if ($#$pars > -1) {
604: pop @$pars;
605: pop @Apache::lonxml::pwd;
606: }
1.101 albertel 607: }
608:
609: # if ($target eq 'meta') {
610: # $finaloutput.=&endredirection;
611: # }
612:
1.169 albertel 613:
1.101 albertel 614: if (($ENV{'QUERY_STRING'}) && ($target eq 'web')) {
615: $finaloutput=&afterburn($finaloutput);
1.216 sakharuk 616: }
1.101 albertel 617: return $finaloutput;
618: }
1.67 www 619:
1.7 albertel 620: sub callsub {
1.84 albertel 621: my ($sub,$target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.7 albertel 622: my $currentstring='';
1.72 albertel 623: my $nodefault;
1.7 albertel 624: {
1.59 albertel 625: my $sub1;
1.7 albertel 626: no strict 'refs';
1.68 www 627: my $tag=$token->[1];
1.236 www 628: # get utterly rid of extended html tags
629: if ($tag=~/^x\-/i) { return ''; }
1.141 albertel 630: my $space=$Apache::lonxml::alltags{$tag}[-1];
1.68 www 631: if (!$space) {
1.141 albertel 632: $tag=~tr/A-Z/a-z/;
1.68 www 633: $sub=~tr/A-Z/a-z/;
1.141 albertel 634: $space=$Apache::lonxml::alltags{$tag}[-1]
1.68 www 635: }
1.97 albertel 636:
637: my $deleted=0;
638: $Apache::lonxml::curdepth=join('_',@Apache::lonxml::depthcounter);
639: if (($token->[0] eq 'S') && ($target eq 'modified')) {
640: $deleted=&Apache::edit::handle_delete($space,$target,$token,$tagstack,
641: $parstack,$parser,$safeeval,
642: $style);
643: }
644: if (!$deleted) {
645: if ($space) {
1.220 albertel 646: #&Apache::lonxml::debug("Calling sub $sub in $space $metamode");
1.97 albertel 647: $sub1="$space\:\:$sub";
648: ($currentstring,$nodefault) = &$sub1($target,$token,$tagstack,
649: $parstack,$parser,$safeeval,
650: $style);
651: } else {
1.220 albertel 652: #&Apache::lonxml::debug("NOT Calling sub $sub in $space $metamode");
1.97 albertel 653: if ($metamode <1) {
654: if (defined($token->[4]) && ($metamode < 1)) {
655: $currentstring = $token->[4];
656: } else {
657: $currentstring = $token->[2];
658: }
1.62 sakharuk 659: }
1.7 albertel 660: }
1.97 albertel 661: # &Apache::lonxml::debug("nodefalt:$nodefault:");
662: if ($currentstring eq '' && $nodefault eq '') {
663: if ($target eq 'edit') {
1.220 albertel 664: #&Apache::lonxml::debug("doing default edit for $token->[1]");
1.97 albertel 665: if ($token->[0] eq 'S') {
666: $currentstring = &Apache::edit::tag_start($target,$token);
667: } elsif ($token->[0] eq 'E') {
668: $currentstring = &Apache::edit::tag_end($target,$token);
669: }
670: } elsif ($target eq 'modified') {
671: if ($token->[0] eq 'S') {
672: $currentstring = $token->[4];
673: $currentstring.=&Apache::edit::handle_insert();
1.210 www 674: } elsif ($token->[0] eq 'E') {
675: $currentstring = $token->[2];
676: $currentstring.=&Apache::edit::handle_insertafter($token->[1]);
1.97 albertel 677: } else {
678: $currentstring = $token->[2];
679: }
1.72 albertel 680: }
681: }
1.7 albertel 682: }
683: use strict 'refs';
684: }
685: return $currentstring;
1.82 ng 686: }
687:
1.96 albertel 688: sub setup_globals {
1.172 albertel 689: my ($request,$target)=@_;
690: $Apache::lonxml::request=$request;
1.99 albertel 691: $Apache::lonxml::registered = 0;
1.205 www 692: $errorcount=0;
693: $warningcount=0;
1.207 albertel 694: $Apache::lonxml::default_homework_loaded=0;
1.212 albertel 695: $Apache::lonxml::usestyle=1;
1.204 albertel 696: &init_counter();
1.101 albertel 697: @Apache::lonxml::pwd=();
1.124 albertel 698: @Apache::lonxml::extlinks=();
1.96 albertel 699: if ($target eq 'meta') {
700: $Apache::lonxml::redirection = 0;
701: $Apache::lonxml::metamode = 1;
702: $Apache::lonxml::evaluate = 1;
703: $Apache::lonxml::import = 0;
1.129 albertel 704: } elsif ($target eq 'answer') {
705: $Apache::lonxml::redirection = 0;
706: $Apache::lonxml::metamode = 1;
707: $Apache::lonxml::evaluate = 1;
708: $Apache::lonxml::import = 1;
1.96 albertel 709: } elsif ($target eq 'grade') {
710: &startredirection;
711: $Apache::lonxml::metamode = 0;
712: $Apache::lonxml::evaluate = 1;
713: $Apache::lonxml::import = 1;
714: } elsif ($target eq 'modified') {
715: $Apache::lonxml::redirection = 0;
716: $Apache::lonxml::metamode = 0;
717: $Apache::lonxml::evaluate = 0;
718: $Apache::lonxml::import = 0;
719: } elsif ($target eq 'edit') {
720: $Apache::lonxml::redirection = 0;
721: $Apache::lonxml::metamode = 0;
722: $Apache::lonxml::evaluate = 0;
723: $Apache::lonxml::import = 0;
1.163 albertel 724: } elsif ($target eq 'analyze') {
725: $Apache::lonxml::redirection = 0;
726: $Apache::lonxml::metamode = 0;
727: $Apache::lonxml::evaluate = 1;
728: $Apache::lonxml::import = 1;
1.96 albertel 729: } else {
730: $Apache::lonxml::redirection = 0;
731: $Apache::lonxml::metamode = 0;
732: $Apache::lonxml::evaluate = 1;
733: $Apache::lonxml::import = 1;
734: }
735: }
736:
1.82 ng 737: sub init_safespace {
738: my ($target,$safeeval,$safehole,$safeinit) = @_;
739: $safeeval->permit("entereval");
740: $safeeval->permit(":base_math");
741: $safeeval->permit("sort");
742: $safeeval->deny(":base_io");
1.102 albertel 743: $safehole->wrap(\&Apache::scripttag::xmlparse,$safeeval,'&xmlparse');
1.251 albertel 744: $safehole->wrap(\&Apache::outputtags::multipart,$safeeval,'&multipart');
1.82 ng 745: $safehole->wrap(\&Apache::lonnet::EXT,$safeeval,'&EXT');
746:
747: $safehole->wrap(\&Math::Cephes::asin,$safeeval,'&asin');
748: $safehole->wrap(\&Math::Cephes::acos,$safeeval,'&acos');
749: $safehole->wrap(\&Math::Cephes::atan,$safeeval,'&atan');
750: $safehole->wrap(\&Math::Cephes::sinh,$safeeval,'&sinh');
751: $safehole->wrap(\&Math::Cephes::cosh,$safeeval,'&cosh');
752: $safehole->wrap(\&Math::Cephes::tanh,$safeeval,'&tanh');
753: $safehole->wrap(\&Math::Cephes::asinh,$safeeval,'&asinh');
754: $safehole->wrap(\&Math::Cephes::acosh,$safeeval,'&acosh');
755: $safehole->wrap(\&Math::Cephes::atanh,$safeeval,'&atanh');
756: $safehole->wrap(\&Math::Cephes::erf,$safeeval,'&erf');
757: $safehole->wrap(\&Math::Cephes::erfc,$safeeval,'&erfc');
758: $safehole->wrap(\&Math::Cephes::j0,$safeeval,'&j0');
759: $safehole->wrap(\&Math::Cephes::j1,$safeeval,'&j1');
760: $safehole->wrap(\&Math::Cephes::jn,$safeeval,'&jn');
761: $safehole->wrap(\&Math::Cephes::jv,$safeeval,'&jv');
762: $safehole->wrap(\&Math::Cephes::y0,$safeeval,'&y0');
763: $safehole->wrap(\&Math::Cephes::y1,$safeeval,'&y1');
764: $safehole->wrap(\&Math::Cephes::yn,$safeeval,'&yn');
765: $safehole->wrap(\&Math::Cephes::yv,$safeeval,'&yv');
1.215 albertel 766:
767: $safehole->wrap(\&Math::Cephes::bdtr ,$safeeval,'&bdtr' );
768: $safehole->wrap(\&Math::Cephes::bdtrc ,$safeeval,'&bdtrc' );
769: $safehole->wrap(\&Math::Cephes::bdtri ,$safeeval,'&bdtri' );
770: $safehole->wrap(\&Math::Cephes::btdtr ,$safeeval,'&btdtr' );
771: $safehole->wrap(\&Math::Cephes::chdtr ,$safeeval,'&chdtr' );
772: $safehole->wrap(\&Math::Cephes::chdtrc,$safeeval,'&chdtrc');
773: $safehole->wrap(\&Math::Cephes::chdtri,$safeeval,'&chdtri');
774: $safehole->wrap(\&Math::Cephes::fdtr ,$safeeval,'&fdtr' );
775: $safehole->wrap(\&Math::Cephes::fdtrc ,$safeeval,'&fdtrc' );
776: $safehole->wrap(\&Math::Cephes::fdtri ,$safeeval,'&fdtri' );
777: $safehole->wrap(\&Math::Cephes::gdtr ,$safeeval,'&gdtr' );
778: $safehole->wrap(\&Math::Cephes::gdtrc ,$safeeval,'&gdtrc' );
779: $safehole->wrap(\&Math::Cephes::nbdtr ,$safeeval,'&nbdtr' );
780: $safehole->wrap(\&Math::Cephes::nbdtrc,$safeeval,'&nbdtrc');
781: $safehole->wrap(\&Math::Cephes::nbdtri,$safeeval,'&nbdtri');
782: $safehole->wrap(\&Math::Cephes::ndtr ,$safeeval,'&ndtr' );
783: $safehole->wrap(\&Math::Cephes::ndtri ,$safeeval,'&ndtri' );
784: $safehole->wrap(\&Math::Cephes::pdtr ,$safeeval,'&pdtr' );
785: $safehole->wrap(\&Math::Cephes::pdtrc ,$safeeval,'&pdtrc' );
786: $safehole->wrap(\&Math::Cephes::pdtri ,$safeeval,'&pdtri' );
787: $safehole->wrap(\&Math::Cephes::stdtr ,$safeeval,'&stdtr' );
788: $safehole->wrap(\&Math::Cephes::stdtri,$safeeval,'&stdtri');
789:
790: # $safehole->wrap(\&Math::Cephes::new_fract,$safeeval,'&new_fract');
791: # $safehole->wrap(\&Math::Cephes::radd,$safeeval,'&radd');
792: # $safehole->wrap(\&Math::Cephes::rsub,$safeeval,'&rsub');
793: # $safehole->wrap(\&Math::Cephes::rmul,$safeeval,'&rmul');
794: # $safehole->wrap(\&Math::Cephes::rdiv,$safeeval,'&rdiv');
795: # $safehole->wrap(\&Math::Cephes::euclid,$safeeval,'&euclid');
796:
1.91 ng 797: $safehole->wrap(\&Math::Random::random_beta,$safeeval,'&math_random_beta');
798: $safehole->wrap(\&Math::Random::random_chi_square,$safeeval,'&math_random_chi_square');
799: $safehole->wrap(\&Math::Random::random_exponential,$safeeval,'&math_random_exponential');
800: $safehole->wrap(\&Math::Random::random_f,$safeeval,'&math_random_f');
801: $safehole->wrap(\&Math::Random::random_gamma,$safeeval,'&math_random_gamma');
802: $safehole->wrap(\&Math::Random::random_multivariate_normal,$safeeval,'&math_random_multivariate_normal');
803: $safehole->wrap(\&Math::Random::random_multinomial,$safeeval,'&math_random_multinomial');
804: $safehole->wrap(\&Math::Random::random_noncentral_chi_square,$safeeval,'&math_random_noncentral_chi_square');
805: $safehole->wrap(\&Math::Random::random_noncentral_f,$safeeval,'&math_random_noncentral_f');
806: $safehole->wrap(\&Math::Random::random_normal,$safeeval,'&math_random_normal');
807: $safehole->wrap(\&Math::Random::random_permutation,$safeeval,'&math_random_permutation');
1.93 ng 808: $safehole->wrap(\&Math::Random::random_permuted_index,$safeeval,'&math_random_permuted_index');
1.91 ng 809: $safehole->wrap(\&Math::Random::random_uniform,$safeeval,'&math_random_uniform');
810: $safehole->wrap(\&Math::Random::random_poisson,$safeeval,'&math_random_poisson');
811: $safehole->wrap(\&Math::Random::random_uniform_integer,$safeeval,'&math_random_uniform_integer');
812: $safehole->wrap(\&Math::Random::random_negative_binomial,$safeeval,'&math_random_negative_binomial');
813: $safehole->wrap(\&Math::Random::random_binomial,$safeeval,'&math_random_binomial');
814: $safehole->wrap(\&Math::Random::random_seed_from_phrase,$safeeval,'&random_seed_from_phrase');
815: $safehole->wrap(\&Math::Random::random_set_seed_from_phrase,$safeeval,'&random_set_seed_from_phrase');
816: $safehole->wrap(\&Math::Random::random_get_seed,$safeeval,'&random_get_seed');
817: $safehole->wrap(\&Math::Random::random_set_seed,$safeeval,'&random_set_seed');
818:
1.82 ng 819: #need to inspect this class of ops
820: # $safeeval->deny(":base_orig");
1.91 ng 821: $safeinit .= ';$external::target="'.$target.'";';
1.121 albertel 822: my $rndseed;
1.123 albertel 823: my ($symb,$courseid,$domain,$name) = &Apache::lonxml::whichuser();
824: $rndseed=&Apache::lonnet::rndseed($symb,$courseid,$domain,$name);
1.121 albertel 825: $safeinit .= ';$external::randomseed='.$rndseed.';';
1.249 albertel 826: &Apache::lonxml::debug("Setting rndseed to $rndseed");
1.82 ng 827: &Apache::run::run($safeinit,$safeeval);
1.207 albertel 828: }
829:
830: sub default_homework_load {
831: my ($safeeval)=@_;
832: &Apache::lonxml::debug('Loading default_homework');
833: my $default=&Apache::lonnet::getfile('/home/httpd/html/res/adm/includes/default_homework.lcpm');
1.241 albertel 834: if ($default eq -1) {
1.207 albertel 835: &Apache::lonxml::error("<b>Unable to find <i>default_homework.lcpm</i></b>");
836: } else {
837: &Apache::run::run($default,$safeeval);
838: $Apache::lonxml::default_homework_loaded=1;
839: }
1.17 albertel 840: }
841:
1.55 albertel 842: sub startredirection {
843: $Apache::lonxml::redirection++;
844: push (@Apache::lonxml::outputstack, '');
845: }
846:
847: sub endredirection {
848: if (!$Apache::lonxml::redirection) {
1.72 albertel 849: &Apache::lonxml::error("Endredirection was called, before a startredirection, perhaps you have unbalanced tags. Some debuging information:".join ":",caller);
1.55 albertel 850: return '';
851: }
852: $Apache::lonxml::redirection--;
853: pop @Apache::lonxml::outputstack;
1.97 albertel 854: }
855:
856: sub end_tag {
857: my ($tagstack,$parstack,$token)=@_;
858: pop(@$tagstack);
859: pop(@$parstack);
860: &decreasedepth($token);
1.55 albertel 861: }
862:
1.17 albertel 863: sub initdepth {
864: @Apache::lonxml::depthcounter=();
865: $Apache::lonxml::depth=-1;
866: $Apache::lonxml::olddepth=-1;
867: }
868:
869: sub increasedepth {
1.19 albertel 870: my ($token) = @_;
1.17 albertel 871: $Apache::lonxml::depth++;
872: $Apache::lonxml::depthcounter[$Apache::lonxml::depth]++;
873: if ($Apache::lonxml::depthcounter[$Apache::lonxml::depth]==1) {
874: $Apache::lonxml::olddepth=$Apache::lonxml::depth;
875: }
1.42 albertel 876: my $curdepth=join('_',@Apache::lonxml::depthcounter);
1.64 albertel 877: &Apache::lonxml::debug("s $Apache::lonxml::depth : $Apache::lonxml::olddepth : $curdepth : $token->[1]\n");
1.54 albertel 878: #print "<br />s $Apache::lonxml::depth : $Apache::lonxml::olddepth : $curdepth : $token->[1]\n";
1.17 albertel 879: }
880:
881: sub decreasedepth {
1.19 albertel 882: my ($token) = @_;
1.17 albertel 883: $Apache::lonxml::depth--;
1.36 albertel 884: if ($Apache::lonxml::depth<$Apache::lonxml::olddepth-1) {
885: $#Apache::lonxml::depthcounter--;
886: $Apache::lonxml::olddepth=$Apache::lonxml::depth+1;
887: }
1.43 albertel 888: if ( $Apache::lonxml::depth < -1) {
1.140 albertel 889: &Apache::lonxml::warning("Missing tags, unable to properly run file.");
1.43 albertel 890: $Apache::lonxml::depth='-1';
891: }
1.42 albertel 892: my $curdepth=join('_',@Apache::lonxml::depthcounter);
1.64 albertel 893: &Apache::lonxml::debug("e $Apache::lonxml::depth : $Apache::lonxml::olddepth : $token->[1] : $curdepth\n");
1.54 albertel 894: #print "<br />e $Apache::lonxml::depth : $Apache::lonxml::olddepth : $token->[1] : $curdepth\n";
1.1 sakharuk 895: }
1.19 albertel 896:
1.180 albertel 897: sub get_all_text_unbalanced {
1.190 albertel 898: #there is a copy of this in lonpublisher.pm
1.180 albertel 899: my($tag,$pars)= @_;
900: my $token;
901: my $result='';
902: $tag='<'.$tag.'>';
903: while ($token = $$pars[-1]->get_token) {
904: if (($token->[0] eq 'T')||($token->[0] eq 'C')||($token->[0] eq 'D')) {
905: $result.=$token->[1];
906: } elsif ($token->[0] eq 'PI') {
907: $result.=$token->[2];
908: } elsif ($token->[0] eq 'S') {
909: $result.=$token->[4];
910: } elsif ($token->[0] eq 'E') {
911: $result.=$token->[2];
912: }
1.211 albertel 913: if ($result =~ /(.*)\Q$tag\E(.*)/s) {
1.180 albertel 914: &Apache::lonxml::debug('Got a winner with leftovers ::'.$2);
915: &Apache::lonxml::debug('Result is :'.$1);
916: $result=$1;
917: my $redo=$tag.$2;
918: &Apache::lonxml::newparser($pars,\$redo);
919: last;
920: }
921: }
922: return $result
1.204 albertel 923: }
924:
925: sub increment_counter {
1.247 albertel 926: my ($increment) = @_;
927: if (defined($increment) && $increment gt 0) {
928: $Apache::lonxml::counter+=$increment;
929: } else {
930: $Apache::lonxml::counter++;
931: }
1.204 albertel 932: $Apache::lonxml::counter_changed=1;
933: }
934:
935: sub init_counter {
936: if (defined($ENV{'form.counter'})) {
937: $Apache::lonxml::counter=$ENV{'form.counter'};
1.247 albertel 938: $Apache::lonxml::counter_changed=0;
1.237 sakharuk 939: } else {
1.204 albertel 940: $Apache::lonxml::counter=1;
1.247 albertel 941: $Apache::lonxml::counter_changed=1;
1.204 albertel 942: }
943: }
944:
945: sub store_counter {
946: &Apache::lonnet::appenv(('form.counter' => $Apache::lonxml::counter));
947: return '';
1.180 albertel 948: }
949:
1.19 albertel 950: sub get_all_text {
951: my($tag,$pars)= @_;
1.212 albertel 952: &Apache::lonxml::debug("Got a ".ref($pars));
1.224 albertel 953: my $gotfullstack=1;
1.212 albertel 954: if (ref($pars) ne 'ARRAY') {
1.224 albertel 955: $gotfullstack=0;
1.212 albertel 956: $pars=[$pars];
957: }
1.19 albertel 958: my $depth=0;
959: my $token;
960: my $result='';
1.57 albertel 961: if ( $tag =~ m:^/: ) {
962: my $tag=substr($tag,1);
1.212 albertel 963: #&Apache::lonxml::debug("have:$tag:");
1.223 albertel 964: my $top_empty=0;
965: while (($depth >=0) && ($#$pars > -1) && (!$top_empty)) {
1.212 albertel 966: while (($depth >=0) && ($token = $$pars[-1]->get_token)) {
967: #&Apache::lonxml::debug("e token:$token->[0]:$depth:$token->[1]:".$#$pars.":".$#Apache::lonxml::pwd);
968: if (($token->[0] eq 'T')||($token->[0] eq 'C')||($token->[0] eq 'D')) {
969: $result.=$token->[1];
970: } elsif ($token->[0] eq 'PI') {
971: $result.=$token->[2];
972: } elsif ($token->[0] eq 'S') {
973: if ($token->[1] =~ /^$tag$/i) { $depth++; }
974: $result.=$token->[4];
975: } elsif ($token->[0] eq 'E') {
976: if ( $token->[1] =~ /^$tag$/i) { $depth--; }
977: #skip sending back the last end tag
978: if ($depth > -1) { $result.=$token->[2]; } else {
979: $$pars[-1]->unget_token($token);
980: }
1.57 albertel 981: }
982: }
1.228 albertel 983: if (($depth >=0) && ($#$pars == 0) ) { $top_empty=1; }
1.212 albertel 984: if (($depth >=0) && ($#$pars > 0) ) {
985: pop(@$pars);
986: pop(@Apache::lonxml::pwd);
987: }
1.224 albertel 988: }
989: if ($top_empty && $depth >= 0) {
990: #never found the end tag ran out of text, throw error send back blank
991: &error('Never found end tag for <'.$tag.'>');
992: if ($gotfullstack) {
993: my $newstring='</'.$tag.'>'.$result;
994: &Apache::lonxml::newparser($pars,\$newstring);
995: }
996: $result='';
1.57 albertel 997: }
998: } else {
1.212 albertel 999: while ($#$pars > -1) {
1000: while ($token = $$pars[-1]->get_token) {
1001: #&Apache::lonxml::debug("s token:$token->[0]:$depth:$token->[1]");
1002: if (($token->[0] eq 'T')||($token->[0] eq 'C')||
1003: ($token->[0] eq 'D')) {
1004: $result.=$token->[1];
1005: } elsif ($token->[0] eq 'PI') {
1006: $result.=$token->[2];
1007: } elsif ($token->[0] eq 'S') {
1008: if ( $token->[1] =~ /^$tag$/i) {
1009: $$pars[-1]->unget_token($token); last;
1010: } else {
1011: $result.=$token->[4];
1012: }
1013: } elsif ($token->[0] eq 'E') {
1014: $result.=$token->[2];
1015: }
1016: }
1017: if (($#$pars > 0) ) {
1018: pop(@$pars);
1019: pop(@Apache::lonxml::pwd);
1020: } else { last; }
1.36 albertel 1021: }
1.19 albertel 1022: }
1.212 albertel 1023: if ($result =~ m|<LONCAPA_INTERNAL_TURN_STYLE_ON />|) {
1024: $Apache::lonxml::usestyle=1;
1025: }
1026: #&Apache::lonxml::debug("Exit:$result:");
1.19 albertel 1027: return $result
1028: }
1029:
1.23 albertel 1030: sub newparser {
1031: my ($parser,$contentref,$dir) = @_;
1.167 albertel 1032: push (@$parser,HTML::LCParser->new($contentref));
1.56 albertel 1033: $$parser['-1']->xml_mode('1');
1.23 albertel 1034: if ( $dir eq '' ) {
1035: push (@Apache::lonxml::pwd, $Apache::lonxml::pwd[$#Apache::lonxml::pwd]);
1036: } else {
1037: push (@Apache::lonxml::pwd, $dir);
1038: }
1039: }
1.1 sakharuk 1040:
1.8 albertel 1041: sub parstring {
1042: my ($token) = @_;
1043: my $temp='';
1.142 albertel 1044: foreach (@{$token->[3]}) {
1.35 www 1045: unless ($_=~/\W/) {
1.42 albertel 1046: my $val=$token->[2]->{$_};
1.231 albertel 1047: $val =~ s/([\%\@\\\"\'])/\\$1/g;
1.51 albertel 1048: #if ($val =~ m/^[\%\@]/) { $val="\\".$val; }
1.42 albertel 1049: $temp .= "my \$$_=\"$val\";"
1.20 albertel 1050: }
1.142 albertel 1051: }
1.8 albertel 1052: return $temp;
1053: }
1.22 albertel 1054:
1.34 www 1055: sub writeallows {
1.126 www 1056: unless ($#extlinks>=0) { return; }
1.34 www 1057: my $thisurl='/res/'.&Apache::lonnet::declutter(shift);
1.111 www 1058: if ($ENV{'httpref.'.$thisurl}) {
1059: $thisurl=$ENV{'httpref.'.$thisurl};
1060: }
1.34 www 1061: my $thisdir=$thisurl;
1062: $thisdir=~s/\/[^\/]+$//;
1063: my %httpref=();
1.142 albertel 1064: foreach (@extlinks) {
1.34 www 1065: $httpref{'httpref.'.
1.125 www 1066: &Apache::lonnet::hreflocation($thisdir,$_)}=$thisurl;
1.142 albertel 1067: }
1.126 www 1068: @extlinks=();
1.34 www 1069: &Apache::lonnet::appenv(%httpref);
1070: }
1071:
1.66 www 1072: #
1073: # Afterburner handles anchors, highlights and links
1074: #
1075: sub afterburn {
1076: my $result=shift;
1.154 albertel 1077: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
1078: ['highlight','anchor','link']);
1.66 www 1079: if ($ENV{'form.highlight'}) {
1.142 albertel 1080: foreach (split(/\,/,$ENV{'form.highlight'})) {
1.66 www 1081: my $anchorname=$_;
1082: my $matchthis=$anchorname;
1083: $matchthis=~s/\_+/\\s\+/g;
1084: $result=~s/($matchthis)/\<font color=\"red\"\>$1\<\/font\>/gs;
1.142 albertel 1085: }
1.66 www 1086: }
1087: if ($ENV{'form.link'}) {
1.142 albertel 1088: foreach (split(/\,/,$ENV{'form.link'})) {
1.66 www 1089: my ($anchorname,$linkurl)=split(/\>/,$_);
1090: my $matchthis=$anchorname;
1091: $matchthis=~s/\_+/\\s\+/g;
1092: $result=~s/($matchthis)/\<a href=\"$linkurl\"\>$1\<\/a\>/gs;
1.142 albertel 1093: }
1.66 www 1094: }
1095: if ($ENV{'form.anchor'}) {
1096: my $anchorname=$ENV{'form.anchor'};
1097: my $matchthis=$anchorname;
1098: $matchthis=~s/\_+/\\s\+/g;
1099: $result=~s/($matchthis)/\<a name=\"$anchorname\"\>$1\<\/a\>/s;
1100: $result.=(<<"ENDSCRIPT");
1.226 albertel 1101: <script type="text/javascript">
1.66 www 1102: document.location.hash='$anchorname';
1103: </script>
1104: ENDSCRIPT
1105: }
1106: return $result;
1107: }
1108:
1.79 www 1109: sub storefile {
1110: my ($file,$contents)=@_;
1111: if (my $fh=Apache::File->new('>'.$file)) {
1112: print $fh $contents;
1113: $fh->close();
1.147 albertel 1114: } else {
1115: &warning("Unable to save file $file");
1.79 www 1116: }
1117: }
1118:
1.151 albertel 1119: sub createnewhtml {
1120: my $filecontents=(<<SIMPLECONTENT);
1.78 www 1121: <html>
1122: <head>
1123: <title>
1124: Title of Document Goes Here
1125: </title>
1126: </head>
1127: <body bgcolor="#FFFFFF">
1128:
1129: Body of Document Goes Here
1130:
1131: </body>
1132: </html>
1133: SIMPLECONTENT
1.151 albertel 1134: return $filecontents;
1135: }
1136:
1.147 albertel 1137:
1.151 albertel 1138: sub inserteditinfo {
1139: my ($result,$filecontents)=@_;
1.157 albertel 1140: $filecontents = &HTML::Entities::encode($filecontents);
1.147 albertel 1141: # my $editheader='<a href="#editsection">Edit below</a><hr />';
1.240 albertel 1142: my $xml_help = '<table><tr><td>'.
1143: &Apache::loncommon::help_open_topic("Greek_Symbols",'Greek Symbols',
1144: undef,undef,600)
1145: .'</td><td>'.
1146: &Apache::loncommon::help_open_topic("Other_Symbols",'Other Symbols',
1147: undef,undef,600)
1148: .'</td></tr></table>';
1.254 albertel 1149: my $titledisplay=&display_title();
1.161 albertel 1150: my $buttons=(<<BUTTONS);
1151: <input type="submit" name="attemptclean"
1152: value="Save and then attempt to clean HTML" />
1153: <input type="submit" name="savethisfile" value="Save this" />
1154: <input type="submit" name="viewmode" value="View" />
1155: BUTTONS
1.78 www 1156: my $editfooter=(<<ENDFOOTER);
1157: <hr />
1158: <a name="editsection" />
1159: <form method="post">
1.240 albertel 1160: $xml_help
1.161 albertel 1161: <input type="hidden" name="editmode" value="Edit" />
1.170 www 1162: $buttons<br />
1.78 www 1163: <textarea cols="80" rows="40" name="filecont">$filecontents</textarea>
1.170 www 1164: <br />$buttons
1.78 www 1165: <br />
1166: </form>
1.254 albertel 1167: $titledisplay
1.78 www 1168: ENDFOOTER
1.147 albertel 1169: # $result=~s/(\<body[^\>]*\>)/$1$editheader/is;
1.78 www 1170: $result=~s/(\<\/body\>)/$editfooter/is;
1171: return $result;
1172: }
1173:
1.152 albertel 1174: sub get_target {
1175: my $viewgrades=&Apache::lonnet::allowed('vgr',$ENV{'request.course.id'});
1176: if ( $ENV{'request.state'} eq 'published') {
1177: if ( defined($ENV{'form.grade_target'})
1178: && ($viewgrades == 'F' )) {
1179: return ($ENV{'form.grade_target'});
1.153 albertel 1180: } elsif (defined($ENV{'form.grade_target'})) {
1181: if (($ENV{'form.grade_target'} eq 'web') ||
1182: ($ENV{'form.grade_target'} eq 'tex') ) {
1183: return $ENV{'form.grade_target'}
1184: } else {
1185: return 'web';
1186: }
1.152 albertel 1187: } else {
1188: return 'web';
1189: }
1190: } elsif ($ENV{'request.state'} eq 'construct') {
1191: if ( defined($ENV{'form.grade_target'})) {
1192: return ($ENV{'form.grade_target'});
1193: } else {
1194: return 'web';
1195: }
1196: } else {
1197: return 'web';
1198: }
1199: }
1200:
1.24 sakharuk 1201: sub handler {
1.255 sakharuk 1202: my $request=shift;
1203:
1204: my $target=&get_target();
1205:
1.258 albertel 1206: $Apache::lonxml::debug=$ENV{'user.debug'};
1.255 sakharuk 1207:
1208: if ($ENV{'browser.mathml'}) {
1209: $request->content_type('text/xml');
1210: } else {
1211: $request->content_type('text/html');
1212: }
1213: &Apache::loncommon::no_cache($request);
1214: $request->send_http_header;
1215:
1216: return OK if $request->header_only;
1.68 www 1217:
1218:
1.255 sakharuk 1219: my $file=&Apache::lonnet::filelocation("",$request->uri);
1.78 www 1220: #
1221: # Edit action? Save file.
1222: #
1.255 sakharuk 1223: unless ($ENV{'request.state'} eq 'published') {
1224: if (($ENV{'form.savethisfile'}) || ($ENV{'form.attemptclean'})) {
1225: &storefile($file,$ENV{'form.filecont'});
1226: }
1227: }
1228: my %mystyle;
1229: my $result = '';
1230: my $filecontents=&Apache::lonnet::getfile($file);
1231: if ($filecontents eq -1) {
1232: $result=(<<ENDNOTFOUND);
1.78 www 1233: <html>
1234: <head>
1235: <title>File not found</title>
1236: </head>
1237: <body bgcolor="#FFFFFF">
1238: <b>File not found: $file</b>
1239: </body>
1240: </html>
1241: ENDNOTFOUND
1.50 albertel 1242: $filecontents='';
1.255 sakharuk 1243: if ($ENV{'request.state'} ne 'published') {
1244: $filecontents=&createnewhtml();
1245: $ENV{'form.editmode'}='Edit'; #force edit mode
1246: }
1247: } else {
1248: unless ($ENV{'request.state'} eq 'published') {
1249: if ($ENV{'form.attemptclean'}) {
1250: $filecontents=&htmlclean($filecontents,1);
1251: }
1252: }
1253: if (!$ENV{'form.editmode'} || $ENV{'form.viewmode'}) {
1254: $result = &Apache::lonxml::xmlparse($request,$target,$filecontents,
1255: '',%mystyle);
1256: }
1.147 albertel 1257: }
1.255 sakharuk 1258:
1.78 www 1259: #
1260: # Edit action? Insert editing commands
1261: #
1.255 sakharuk 1262: unless ($ENV{'request.state'} eq 'published') {
1263: if ($ENV{'form.editmode'} && (!($ENV{'form.viewmode'}))) {
1264: my $displayfile=$request->uri;
1265: $displayfile=~s/^\/[^\/]*//;
1266: $result='<html><body bgcolor="#FFFFFF"><h3>'.$displayfile.
1267: '</h3></body></html>';
1268: $result=&inserteditinfo($result,$filecontents);
1269: }
1.147 albertel 1270: }
1.255 sakharuk 1271:
1272: writeallows($request->uri);
1273:
1274:
1275: $request->print($result);
1276:
1277: return OK;
1.253 albertel 1278: }
1279:
1280: sub display_title {
1281: my $result;
1282: if ($ENV{'request.state'} eq 'construct') {
1283: my $title=&Apache::lonnet::gettitle();
1284: if (!defined($title) || $title eq '') {
1285: $title = $ENV{'request.filename'};
1286: $title = substr($title, rindex($title, '/') + 1);
1287: }
1288: $result = "<script type='text/javascript'>top.document.title = '$title - LON-CAPA Construction Space';</script>";
1289: }
1290: return $result;
1.24 sakharuk 1291: }
1.147 albertel 1292:
1.22 albertel 1293: sub debug {
1294: if ($Apache::lonxml::debug eq 1) {
1.146 albertel 1295: $|=1;
1.202 albertel 1296: print('<font size="-2"<pre>DEBUG:'.&HTML::Entities::encode($_[0])."</pre></font>\n");
1.22 albertel 1297: }
1298: }
1.49 albertel 1299:
1.22 albertel 1300: sub error {
1.205 www 1301: $errorcount++;
1.74 albertel 1302: if (($Apache::lonxml::debug eq 1) || ($ENV{'request.state'} eq 'construct') ) {
1.166 matthew 1303: # If printing in construction space, put the error inside <pre></pre>
1.167 albertel 1304: print "<b>ERROR:</b>".join("\n",@_)."\n";
1.52 albertel 1305: } else {
1306: print "<b>An Error occured while processing this resource. The instructor has been notified.</b> <br />";
1307: #notify author
1.146 albertel 1308: &Apache::lonmsg::author_res_msg($ENV{'request.filename'},join('<br />',@_));
1.52 albertel 1309: #notify course
1310: if ( $ENV{'request.course.id'} ) {
1.209 www 1311: my (undef,%users)=&Apache::lonfeedback::decide_receiver(undef,0,1,1,1);
1.143 www 1312: my $declutter=&Apache::lonnet::declutter($ENV{'request.filename'});
1.209 www 1313: foreach (keys %users) {
1314: my ($user,$domain) = split(/:/, $_);
1.143 www 1315: &Apache::lonmsg::user_normal_msg($user,$domain,
1.146 albertel 1316: "Error [$declutter]",join('<br />',@_));
1.52 albertel 1317: }
1318: }
1.74 albertel 1319:
1.52 albertel 1320: #FIXME probably shouldn't have me get everything forever.
1.146 albertel 1321: &Apache::lonmsg::user_normal_msg('albertel','msu',"Error in $ENV{'request.filename'}",join('<br />',@_));
1.74 albertel 1322: #&Apache::lonmsg::user_normal_msg('albertel','103',"Error in $ENV{'request.filename'}",$_[0]);
1.52 albertel 1323: }
1.22 albertel 1324: }
1.49 albertel 1325:
1.22 albertel 1326: sub warning {
1.205 www 1327: $warningcount++;
1.261 albertel 1328:
1329: if ($ENV{'form.grade_target'} ne 'tex') {
1330: if ($ENV{'request.state'} eq 'construct' || $Apache::lonxml::debug) {
1331: print "<b>W</b>ARNING<b>:</b>".join('<br />',@_)."<br />\n";
1332: }
1.73 harris41 1333: }
1.83 albertel 1334: }
1335:
1336: sub get_param {
1.213 albertel 1337: my ($param,$parstack,$safeeval,$context,$case_insensitive) = @_;
1338: if ( ! $context ) { $context = -1; }
1339: my $args ='';
1340: if ( $#$parstack > (-2-$context) ) { $args=$$parstack[$context]; }
1341: if ( ! $args ) { return undef; }
1342: if ( $case_insensitive ) {
1343: if ($args =~ s/(my \$)(\Q$param\E)(=\")/$1.lc($2).$3/ei) {
1344: return &Apache::run::run("{$args;".'return $'.$param.'}',
1345: $safeeval); #'
1346: } else {
1347: return undef;
1348: }
1349: } else {
1350: if ( $args =~ /my \$\Q$param\E=\"/ ) {
1351: return &Apache::run::run("{$args;".'return $'.$param.'}',
1352: $safeeval); #'
1353: } else {
1354: return undef;
1355: }
1356: }
1.22 albertel 1357: }
1358:
1.132 albertel 1359: sub get_param_var {
1.213 albertel 1360: my ($param,$parstack,$safeeval,$context,$case_insensitive) = @_;
1.132 albertel 1361: if ( ! $context ) { $context = -1; }
1362: my $args ='';
1363: if ( $#$parstack > (-2-$context) ) { $args=$$parstack[$context]; }
1.230 albertel 1364: &Apache::lonxml::debug("Args are $args param is $param");
1.213 albertel 1365: if ($case_insensitive) {
1366: if (! ($args=~s/(my \$)(\Q$param\E)(=\")/$1.lc($2).$3/ei)) {
1367: return undef;
1368: }
1369: } elsif ( $args !~ /my \$\Q$param\E=\"/ ) { return undef; }
1.132 albertel 1370: my $value=&Apache::run::run("{$args;".'return $'.$param.'}',$safeeval); #'
1.230 albertel 1371: &Apache::lonxml::debug("first run is $value");
1372: if ($value =~ /^[\$\@\%]\w+$/) {
1373: &Apache::lonxml::debug("doing second");
1374: my @result=&Apache::run::run("return $value",$safeeval,1);
1375: if (!defined($result[0])) {
1376: return $value
1377: } else {
1378: if (wantarray) { return @result; } else { return $result[0]; }
1379: }
1.132 albertel 1380: } else {
1381: return $value;
1382: }
1383: }
1384:
1.74 albertel 1385: sub register_insert {
1.75 albertel 1386: my @data = split /\n/, &Apache::lonnet::getfile('/home/httpd/lonTabs/insertlist.tab');
1.74 albertel 1387: my $i;
1.76 albertel 1388: my $tagnum=0;
1.74 albertel 1389: my @order;
1390: for ($i=0;$i < $#data; $i++) {
1391: my $line = $data[$i];
1392: if ( $line =~ /^\#/ || $line =~ /^\s*\n/) { next; }
1393: if ( $line =~ /TABLE/ ) { last; }
1.92 albertel 1394: my ($tag,$descrip,$color,$function,$show) = split(/,/, $line);
1.135 albertel 1395: if ($tag) {
1396: $insertlist{"$tagnum.tag"} = $tag;
1397: $insertlist{"$tagnum.description"} = $descrip;
1398: $insertlist{"$tagnum.color"} = $color;
1399: $insertlist{"$tagnum.function"} = $function;
1400: if (!defined($show)) { $show='yes'; }
1401: $insertlist{"$tagnum.show"}= $show;
1402: $insertlist{"$tag.num"}=$tagnum;
1403: $tagnum++;
1404: }
1.74 albertel 1405: }
1.76 albertel 1406: $i++; #skipping TABLE line
1407: $tagnum = 0;
1.74 albertel 1408: for (;$i < $#data;$i++) {
1409: my $line = $data[$i];
1.76 albertel 1410: my ($mnemonic,@which) = split(/ +/,$line);
1411: my $tag = $insertlist{"$tagnum.tag"};
1.144 matthew 1412: for (my $j=0;$j <=$#which;$j++) {
1.74 albertel 1413: if ( $which[$j] eq 'Y' ) {
1.76 albertel 1414: if ($insertlist{"$j.show"} ne 'no') {
1415: push(@{ $insertlist{"$tag.which"} },$j);
1416: }
1.74 albertel 1417: }
1418: }
1.76 albertel 1419: $tagnum++;
1.74 albertel 1420: }
1421: }
1.98 albertel 1422:
1423: sub description {
1424: my ($token)=@_;
1.138 albertel 1425: my $tagnum;
1426: my $tag=$token->[1];
1427: foreach my $namespace (reverse @Apache::lonxml::namespace) {
1428: my $testtag=$namespace.'::'.$tag;
1429: $tagnum=$insertlist{"$testtag.num"};
1430: if (defined($tagnum)) { last; }
1431: }
1432: if (!defined ($tagnum)) { $tagnum=$Apache::lonxml::insertlist{"$tag.num"}; }
1433: return $insertlist{$tagnum.'.description'};
1.98 albertel 1434: }
1.123 albertel 1435:
1436: # ----------------------------------------------------------------- whichuser
1437: # returns a list of $symb, $courseid, $domain, $name that is correct for
1438: # calls to lonnet functions for this setup.
1439: # - looks for form.grade_ parameters
1440: sub whichuser {
1.262 ! matthew 1441: my ($passedsymb)=@_;
1.245 albertel 1442: my ($symb,$courseid,$domain,$name,$publicuser);
1.123 albertel 1443: if (defined($ENV{'form.grade_symb'})) {
1444: my $tmp_courseid=$ENV{'form.grade_courseid'};
1445: my $allowed=&Apache::lonnet::allowed('mgr',$tmp_courseid);
1446: if ($allowed) {
1447: $symb=$ENV{'form.grade_symb'};
1448: $courseid=$ENV{'form.grade_courseid'};
1449: $domain=$ENV{'form.grade_domain'};
1450: $name=$ENV{'form.grade_username'};
1451: }
1.134 albertel 1452: } else {
1.262 ! matthew 1453: if (!$passedsymb) {
! 1454: $symb=&Apache::lonnet::symbread();
! 1455: } else {
! 1456: $symb=$passedsymb;
! 1457: }
1.244 albertel 1458: $courseid=$ENV{'request.course.id'};
1459: $domain=$ENV{'user.domain'};
1460: $name=$ENV{'user.name'};
1461: if ($name eq 'public' && $domain eq 'public') {
1462: if (!defined($ENV{'form.username'})) {
1463: $ENV{'form.username'}.=time.rand(10000000);
1464: }
1465: $name.=$ENV{'form.username'};
1466: }
1.123 albertel 1467: }
1.245 albertel 1468: return ($symb,$courseid,$domain,$name,$publicuser);
1.123 albertel 1469: }
1470:
1.1 sakharuk 1471: 1;
1472: __END__
1.68 www 1473:
1474:
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