Annotation of loncom/xml/lonxml.pm, revision 1.182
1.2 sakharuk 1: # The LearningOnline Network with CAPA
1.3 sakharuk 2: # XML Parser Module
1.2 sakharuk 3: #
1.182 ! sakharuk 4: # $Id: lonxml.pm,v 1.181 2002/07/15 19:45:18 www 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
1.73 harris41 44: # 5/10 Scott Harrison
1.78 www 45: # 5/26 Gerd Kortemeyer
1.80 harris41 46: # 5/27 H. K. Ng
1.89 www 47: # 6/2,6/3,6/8,6/9 Gerd Kortemeyer
1.93 ng 48: # 6/12,6/13 H. K. Ng
1.95 www 49: # 6/16 Gerd Kortemeyer
1.104 ng 50: # 7/27 H. K. Ng
1.127 www 51: # 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 52: # Guy Albertelli
53: # 9/26 Gerd Kortemeyer
1.143 www 54: # Dec Guy Albertelli
55: # YEAR=2002
56: # 1/1 Gerd Kortemeyer
1.145 www 57: # 1/2 Matthew Hall
58: # 1/3 Gerd Kortemeyer
1.143 www 59: #
1.2 sakharuk 60:
1.4 albertel 61: package Apache::lonxml;
1.33 www 62: use vars
1.169 albertel 63: qw(@pwd @outputstack $redirection $import @extlinks $metamode $evaluate %insertlist @namespace $prevent_entity_encode);
1.1 sakharuk 64: use strict;
1.167 albertel 65: use HTML::LCParser();
1.161 albertel 66: use HTML::TreeBuilder();
67: use HTML::Entities();
68: use Safe();
69: use Safe::Hole();
70: use Math::Cephes();
71: use Math::Random();
72: use Opcode();
1.72 albertel 73:
74: sub register {
1.141 albertel 75: my ($space,@taglist) = @_;
76: foreach my $temptag (@taglist) {
77: push(@{ $Apache::lonxml::alltags{$temptag} },$space);
1.72 albertel 78: }
79: }
80:
1.141 albertel 81: sub deregister {
82: my ($space,@taglist) = @_;
83: foreach my $temptag (@taglist) {
84: my $tempspace = $Apache::lonxml::alltags{$temptag}[-1];
85: if ($tempspace eq $space) {
86: pop(@{ $Apache::lonxml::alltags{$temptag} });
87: }
88: }
1.142 albertel 89: #&printalltags();
1.141 albertel 90: }
91:
1.46 www 92: use Apache::Constants qw(:common);
1.161 albertel 93: use Apache::lontexconvert();
94: use Apache::style();
95: use Apache::run();
96: use Apache::londefdef();
97: use Apache::scripttag();
98: use Apache::edit();
99: use Apache::lonnet();
100: use Apache::File();
101: use Apache::loncommon();
1.79 www 102:
1.72 albertel 103: #================================================== Main subroutine: xmlparse
104: #debugging control, to turn on debugging modify the correct handler
105: $Apache::lonxml::debug=0;
106:
107: #path to the directory containing the file currently being processed
108: @pwd=();
109:
110: #these two are used for capturing a subset of the output for later processing,
111: #don't touch them directly use &startredirection and &endredirection
112: @outputstack = ();
113: $redirection = 0;
114:
115: #controls wheter the <import> tag actually does
116: $import = 1;
117: @extlinks=();
118:
119: # meta mode is a bit weird only some output is to be turned off
120: #<output> tag turns metamode off (defined in londefdef.pm)
121: $metamode = 0;
122:
123: # turns on and of run::evaluate actually derefencing var refs
124: $evaluate = 1;
1.7 albertel 125:
1.74 albertel 126: # data structure for eidt mode, determines what tags can go into what other tags
127: %insertlist=();
1.68 www 128:
1.99 albertel 129: # stores the list of active tag namespaces
1.76 albertel 130: @namespace=();
131:
1.169 albertel 132: # if 0 all high ASCII characters will be encoded into HTML Entities
133: $prevent_entity_encode=0;
134:
1.99 albertel 135: # has the dynamic menu been updated to know about this resource
136: $Apache::lonxml::registered=0;
137:
1.172 albertel 138: # a pointer the the Apache request object
139: $Apache::lonxml::request='';
140:
1.68 www 141: sub xmlbegin {
142: my $output='';
143: if ($ENV{'browser.mathml'}) {
144: $output='<?xml version="1.0"?>'
145: .'<?xml-stylesheet type="text/css" href="/adm/MathML/mathml.css"?>'
146: .'<!DOCTYPE html SYSTEM "/adm/MathML/mathml.dtd" '
147: .'[<!ENTITY mathns "http://www.w3.org/1998/Math/MathML">]>'
148: .'<html xmlns:math="http://www.w3.org/1998/Math/MathML" '
149: .'xmlns="http://www.w3.org/TR/REC-html40">';
150: } else {
151: $output='<html>';
152: }
153: return $output;
154: }
155:
156: sub xmlend {
1.103 www 157: my $discussion='';
158: if ($ENV{'request.course.id'}) {
1.109 www 159: my $crs='/'.$ENV{'request.course.id'};
160: if ($ENV{'request.course.sec'}) {
161: $crs.='_'.$ENV{'request.course.sec'};
162: }
163: $crs=~s/\_/\//g;
164: my $seeid=&Apache::lonnet::allowed('rin',$crs);
1.103 www 165: my $symb=&Apache::lonnet::symbread();
166: if ($symb) {
167: my %contrib=&Apache::lonnet::restore($symb,$ENV{'request.course.id'},
168: $ENV{'course.'.$ENV{'request.course.id'}.'.domain'},
169: $ENV{'course.'.$ENV{'request.course.id'}.'.num'});
170: if ($contrib{'version'}) {
171: $discussion.=
172: '<address><hr /><h2>Course Discussion of Resource</h2>';
173: my $idx;
174: for ($idx=1;$idx<=$contrib{'version'};$idx++) {
1.110 www 175: my $hidden=($contrib{'hidden'}=~/\.$idx\./);
176: unless (($hidden) && (!$seeid)) {
177: my $message=$contrib{$idx.':message'};
178: $message=~s/\n/\<br \/\>/g;
179: if ($message) {
180: if ($hidden) {
181: $message='<font color="#888888">'.$message.'</font>';
182: }
1.109 www 183: my $sender='Anonymous';
184: if ((!$contrib{$idx.':anonymous'}) || ($seeid)) {
1.164 www 185: $sender=$contrib{$idx.':plainname'}.' ('.
186: $contrib{$idx.':sendername'}.' at '.
187: $contrib{$idx.':senderdomain'}.')';
1.109 www 188: if ($contrib{$idx.':anonymous'}) {
1.164 www 189: $sender.=' [anonymous] '.
190: $contrib{$idx.':screenname'};
1.110 www 191: }
192: if ($seeid) {
193: if ($hidden) {
194: $sender.=' <a href="/adm/feedback?unhide='.
195: $symb.':::'.$idx.'">Make Visible</a>';
196: } else {
197: $sender.=' <a href="/adm/feedback?hide='.
198: $symb.':::'.$idx.'">Hide</a>';
199: }
1.109 www 200: }
1.164 www 201: } else {
202: if ($contrib{$idx.':screenname'}) {
203: $sender='<i>'.$contrib{$idx.':screenname'}.'</i>';
204: }
1.109 www 205: }
206: $discussion.='<p><b>'.$sender.'</b> ('.
1.103 www 207: localtime($contrib{$idx.':timestamp'}).
208: '):<blockquote>'.$message.
1.110 www 209: '</blockquote></p>';
210: }
211: }
1.103 www 212: }
213: $discussion.='</address>';
214: }
215: }
216: }
217: return $discussion.'</html>';
1.119 www 218: }
219:
220: sub tokeninputfield {
1.120 www 221: my $defhost=$Apache::lonnet::perlvar{'lonHostID'};
222: $defhost=~tr/a-z/A-Z/;
1.119 www 223: return (<<ENDINPUTFIELD)
1.120 www 224: <script>
225: function updatetoken() {
226: var comp=new Array;
227: var barcode=unescape(document.tokeninput.barcode.value);
228: comp=barcode.split('*');
229: if (typeof(comp[0])!="undefined") {
230: document.tokeninput.codeone.value=comp[0];
231: }
232: if (typeof(comp[1])!="undefined") {
233: document.tokeninput.codetwo.value=comp[1];
234: }
235: if (typeof(comp[2])!="undefined") {
236: comp[2]=comp[2].toUpperCase();
237: document.tokeninput.codethree.value=comp[2];
238: }
239: document.tokeninput.barcode.value='';
240: }
241: </script>
242: <form method="post" name="tokeninput">
1.119 www 243: <table border="2" bgcolor="#FFFFBB">
244: <tr><th>DocID Checkin</th></tr>
245: <tr><td>
246: <table>
247: <tr>
248: <td>Scan in Barcode</td>
1.120 www 249: <td><input type="text" size="22" name="barcode"
250: onChange="updatetoken()"/></td>
1.119 www 251: </tr>
252: <tr><td><i>or</i> Type in DocID</td>
253: <td>
254: <input type="text" size="5" name="codeone" />
1.120 www 255: <b><font size="+2">*</font></b>
1.119 www 256: <input type="text" size="5" name="codetwo" />
1.120 www 257: <b><font size="+2">*</font></b>
258: <input type="text" size="10" name="codethree" value="$defhost"
259: onChange="this.value=this.value.toUpperCase()" />
1.119 www 260: </td></tr>
261: </table>
262: </td></tr>
263: <tr><td><input type="submit" value="Check in DocID" /></td></tr>
264: </table>
265: </form>
266: ENDINPUTFIELD
1.112 www 267: }
268:
1.116 www 269: sub maketoken {
1.118 www 270: my ($symb,$tuname,$tudom,$tcrsid)=@_;
1.112 www 271: unless ($symb) {
272: $symb=&Apache::lonnet::symbread();
273: }
274: unless ($tuname) {
275: $tuname=$ENV{'user.name'};
276: $tudom=$ENV{'user.domain'};
277: $tcrsid=$ENV{'request.course.id'};
278: }
1.116 www 279:
1.118 www 280: return &Apache::lonnet::checkout($symb,$tuname,$tudom,$tcrsid);
281: }
282:
283: sub printtokenheader {
1.133 albertel 284: my ($target,$token,$tsymb,$tcrsid,$tudom,$tuname)=@_;
1.116 www 285: unless ($token) { return ''; }
1.118 www 286:
1.133 albertel 287: my ($symb,$courseid,$domain,$name) = &Apache::lonxml::whichuser();
288: unless ($tsymb) {
289: $tsymb=$symb;
1.118 www 290: }
291: unless ($tuname) {
1.133 albertel 292: $tuname=$name;
293: $tudom=$domain;
294: $tcrsid=$courseid;
1.118 www 295: }
1.114 www 296:
297: my %reply=&Apache::lonnet::get('environment',
298: ['firstname','middlename','lastname','generation'],
299: $tudom,$tuname);
300: my $plainname=$reply{'firstname'}.' '.
301: $reply{'middlename'}.' '.
302: $reply{'lastname'}.' '.
303: $reply{'generation'};
304:
1.112 www 305: if ($target eq 'web') {
1.145 www 306: my %idhash=&Apache::lonnet::idrget($tudom,($tuname));
1.115 www 307: return
308: '<img align="right" src="/cgi-bin/barcode.gif?encode='.$token.'" />'.
309: 'Checked out for '.$plainname.
1.114 www 310: '<br />User: '.$tuname.' at '.$tudom.
1.145 www 311: '<br />ID: '.$idhash{$tuname}.
1.117 www 312: '<br />CourseID: '.$tcrsid.
1.145 www 313: '<br />Course: '.$ENV{'course.'.$tcrsid.'.description'}.
1.114 www 314: '<br />DocID: '.$token.
1.116 www 315: '<br />Time: '.localtime().'<hr />';
1.112 www 316: } else {
1.121 albertel 317: return $token;
1.112 www 318: }
1.68 www 319: }
320:
1.70 www 321: sub fontsettings() {
322: my $headerstring='';
323: if (($ENV{'browser.os'} eq 'mac') && (!$ENV{'browser.mathml'})) {
324: $headerstring.=
325: '<meta Content-Type="text/html; charset=x-mac-roman">';
326: }
327: return $headerstring;
328: }
329:
1.68 www 330: sub registerurl {
1.100 www 331: my $forcereg=shift;
1.155 matthew 332: my $target = shift;
333: my $result = '';
1.179 matthew 334: if ($target eq 'edit') {
335: $result .="<script>\n menu.currentURL=null;\n".
336: &Apache::loncommon::browser_and_searcher_javascript().
337: "\n</script>\n";
338: }
1.176 www 339: if ((($ENV{'request.publicaccess'}) ||
340: (!&Apache::lonnet::is_on_map($ENV{'REQUEST_URI'}))) &&
341: (!$forcereg)) {
1.179 matthew 342: return $result.
1.130 www 343: '<script>function LONCAPAreg(){} function LONCAPAstale(){}</script>';
344: }
1.128 albertel 345: if ($Apache::lonxml::registered && !$forcereg) { return ''; }
1.105 albertel 346: $Apache::lonxml::registered=1;
1.159 www 347: my $nothing='';
348: if ($ENV{'browser.type'} eq 'explorer') { $nothing='javascript:void(0);'; }
1.181 www 349: my $timesync='menu.syncclock(1000*'.time.');';
1.100 www 350: if (($ENV{'REQUEST_URI'}!~/^\/(res\/)*adm\//) || ($forcereg)) {
1.87 www 351: my $hwkadd='';
1.168 albertel 352: if ($ENV{'request.filename'}=~/\.(problem|exam|quiz|assess|survey|form)$/) {
1.87 www 353: if (&Apache::lonnet::allowed('vgr',$ENV{'request.course.id'})) {
354: $hwkadd.=(<<ENDSUBM);
1.168 albertel 355: menu.switchbutton(7,1,'subm.gif','view sub','missions','gocmd("/adm/grades","submission")');
1.87 www 356: ENDSUBM
357: }
358: if (&Apache::lonnet::allowed('mgr',$ENV{'request.course.id'})) {
359: $hwkadd.=(<<ENDGRDS);
1.171 albertel 360: menu.switchbutton(7,2,'pgrd.gif','problem','grades','gocmd("/adm/grades","gradingmenu")');
1.87 www 361: ENDGRDS
362: }
363: if (&Apache::lonnet::allowed('opa',$ENV{'request.course.id'})) {
364: $hwkadd.=(<<ENDPARM);
1.168 albertel 365: menu.switchbutton(7,3,'pparm.gif','problem','parms','gocmd("/adm/parmset","set")');
1.87 www 366: ENDPARM
367: }
368: }
1.155 matthew 369: $result = (<<ENDREGTHIS);
1.87 www 370:
1.68 www 371: <script language="JavaScript">
1.71 www 372: // BEGIN LON-CAPA Internal
1.86 www 373:
1.69 www 374: function LONCAPAreg() {
1.159 www 375: menu=window.open("$nothing","LONCAPAmenu","",false);
1.86 www 376: menu.clearTimeout(menu.menucltim);
1.174 www 377: $timesync
1.69 www 378: menu.currentURL=window.location.pathname;
1.175 www 379: menu.reloadURL=window.location.pathname;
1.69 www 380: menu.currentStale=0;
1.85 www 381: menu.clearbut(3,1);
382: menu.switchbutton
1.108 www 383: (6,3,'catalog.gif','catalog','info','catalog_info()');
384: menu.switchbutton
1.85 www 385: (8,1,'eval.gif','evaluate','this','gopost("/adm/evaluate",currentURL)');
386: menu.switchbutton
387: (8,2,'fdbk.gif','feedback','on this','gopost("/adm/feedback",currentURL)');
388: menu.switchbutton
389: (8,3,'prt.gif','prepare','printout','gopost("/adm/printout",currentURL)');
390: menu.switchbutton
391: (2,1,'back.gif','backward','','gopost("/adm/flip","back:"+currentURL)');
392: menu.switchbutton
393: (2,3,'forw.gif','forward','','gopost("/adm/flip","forward:"+currentURL)');
1.94 www 394: menu.switchbutton
395: (9,1,'sbkm.gif','set','bookmark','set_bookmark()');
396: menu.switchbutton
397: (9,2,'vbkm.gif','view','bookmark','edit_bookmarks()');
398: menu.switchbutton
1.95 www 399: (9,3,'anot.gif','anno-','tations','annotate()');
1.87 www 400: $hwkadd
1.69 www 401: }
1.86 www 402:
1.69 www 403: function LONCAPAstale() {
1.159 www 404: menu=window.open("$nothing","LONCAPAmenu","",false);
1.86 www 405: menu.currentStale=1;
1.175 www 406: if (menu.reloadURL!='' && menu.reloadURL!= null) {
407: menu.switchbutton
408: (3,1,'reload.gif','return','location','go(reloadURL)');
409: }
1.127 www 410: menu.clearbut(7,1);
411: menu.clearbut(7,2);
412: menu.clearbut(7,3);
1.86 www 413: menu.menucltim=menu.setTimeout(
1.94 www 414: 'clearbut(2,1);clearbut(2,3);clearbut(8,1);clearbut(8,2);clearbut(8,3);'+
1.108 www 415: 'clearbut(9,1);clearbut(9,2);clearbut(9,3);clearbut(6,3)',
1.86 www 416: 2000);
417:
1.87 www 418: }
1.86 www 419:
420: // END LON-CAPA Internal
421: </script>
422: ENDREGTHIS
423:
424: } else {
1.155 matthew 425: $result = (<<ENDDONOTREGTHIS);
1.86 www 426:
427: <script language="JavaScript">
428: // BEGIN LON-CAPA Internal
429:
430: function LONCAPAreg() {
1.159 www 431: menu=window.open("$nothing","LONCAPAmenu","",false);
1.174 www 432: $timesync
1.69 www 433: menu.currentStale=1;
1.85 www 434: menu.clearbut(2,1);
435: menu.clearbut(2,3);
436: menu.clearbut(8,1);
437: menu.clearbut(8,2);
438: menu.clearbut(8,3);
1.86 www 439: if (menu.currentURL) {
440: menu.switchbutton
441: (3,1,'reload.gif','return','location','go(currentURL)');
442: } else {
443: menu.clearbut(3,1);
444: }
445: }
446:
447: function LONCAPAstale() {
1.68 www 448: }
1.86 www 449:
1.71 www 450: // END LON-CAPA Internal
1.68 www 451: </script>
1.86 www 452: ENDDONOTREGTHIS
1.155 matthew 453: }
454: return $result;
1.69 www 455: }
456:
457: sub loadevents() {
458: return 'LONCAPAreg();';
459: }
460:
461: sub unloadevents() {
462: return 'LONCAPAstale();';
1.68 www 463: }
464:
1.48 albertel 465: sub printalltags {
466: my $temp;
467: foreach $temp (sort keys %Apache::lonxml::alltags) {
1.141 albertel 468: &Apache::lonxml::debug("$temp -- ".
469: join(',',@{ $Apache::lonxml::alltags{$temp} }));
1.48 albertel 470: }
471: }
1.31 sakharuk 472:
1.3 sakharuk 473: sub xmlparse {
1.172 albertel 474: my ($request,$target,$content_file_string,$safeinit,%style_for_target) = @_;
1.96 albertel 475:
1.172 albertel 476: &setup_globals($request,$target);
1.178 www 477: #
478: # do we have a course style file?
479: #
480:
481: if ($ENV{'request.course.id'}) {
482: my $bodytext=
483: $ENV{'course.'.$ENV{'request.course.id'}.'.default_xml_style'};
484: if ($bodytext) {
485: my $location=&Apache::lonnet::filelocation('',$bodytext);
486: my $styletext=&Apache::lonnet::getfile($location);
487: if ($styletext ne '-1') {
488: %style_for_target = (%style_for_target,
489: &Apache::style::styleparser($target,$styletext));
490: }
491: }
492: }
493:
1.48 albertel 494: #&printalltags();
1.16 albertel 495: my @pars = ();
1.23 albertel 496: my $pwd=$ENV{'request.filename'};
497: $pwd =~ s:/[^/]*$::;
498: &newparser(\@pars,\$content_file_string,$pwd);
1.24 sakharuk 499:
1.3 sakharuk 500: my $safeeval = new Safe;
1.40 albertel 501: my $safehole = new Safe::Hole;
1.82 ng 502: &init_safespace($target,$safeeval,$safehole,$safeinit);
1.3 sakharuk 503: #-------------------- Redefinition of the target in the case of compound target
504:
505: ($target, my @tenta) = split('&&',$target);
506:
1.150 albertel 507: my @stack = ();
1.3 sakharuk 508: my @parstack = ();
1.17 albertel 509: &initdepth;
1.67 www 510:
1.101 albertel 511: my $finaloutput = &inner_xmlparse($target,\@stack,\@parstack,\@pars,
512: $safeeval,\%style_for_target);
1.125 www 513: if ($ENV{'request.uri'}) {
514: &writeallows($ENV{'request.uri'});
515: }
1.3 sakharuk 516: return $finaloutput;
1.106 www 517: }
518:
519: sub htmlclean {
1.107 www 520: my ($raw,$full)=@_;
1.106 www 521:
522: my $tree = HTML::TreeBuilder->new;
523: $tree->ignore_unknown(0);
1.140 albertel 524:
1.106 www 525: $tree->parse($raw);
526:
1.107 www 527: my $output= $tree->as_HTML(undef,' ');
1.140 albertel 528:
1.161 albertel 529: $output=~s/\<(br|hr|img|meta|allow)(.*?)\>/\<$1$2 \/\>/gis;
1.111 www 530: $output=~s/\<\/(br|hr|img|meta|allow)\>//gis;
1.107 www 531: unless ($full) {
532: $output=~s/\<[\/]*(body|head|html)\>//gis;
533: }
1.106 www 534:
535: $tree = $tree->delete;
536:
537: return $output;
1.15 albertel 538: }
539:
1.101 albertel 540: sub inner_xmlparse {
541: my ($target,$stack,$parstack,$pars,$safeeval,$style_for_target)=@_;
542: my $finaloutput = '';
543: my $result;
544: my $token;
545: while ( $#$pars > -1 ) {
546: while ($token = $$pars['-1']->get_token) {
547: if (($token->[0] eq 'T') || ($token->[0] eq 'C') || ($token->[0] eq 'D') ) {
548: if ($metamode<1) {
1.182 ! sakharuk 549: if ($target eq 'tex') {
! 550: my @temp_array = @$stack;
! 551: if ($temp_array[-1] ne 'm') {
! 552: if ($temp_array[-1] ne 'tt') {
! 553: if ($token->[1]=~m/\^/) {$token->[1]=~s/\^/\\verb|\^|/g;}
! 554: } else {
! 555: if ($token->[1]=~m/\^/) {$token->[1]=~s/\^/}\\verb|\^|{/g;}
! 556: }
! 557: }
! 558: }
! 559: $result.=$token->[1];
1.101 albertel 560: }
561: } elsif ($token->[0] eq 'PI') {
562: if ($metamode<1) {
563: $result=$token->[2];
564: }
565: } elsif ($token->[0] eq 'S') {
1.140 albertel 566: # add tag to stack
1.101 albertel 567: push (@$stack,$token->[1]);
568: # add parameters list to another stack
569: push (@$parstack,&parstring($token));
1.140 albertel 570: &increasedepth($token);
1.101 albertel 571: if (exists $$style_for_target{$token->[1]}) {
572: if ($Apache::lonxml::redirection) {
1.140 albertel 573: $Apache::lonxml::outputstack['-1'] .=
1.101 albertel 574: &recurse($$style_for_target{$token->[1]},$target,$safeeval,
575: $style_for_target,@$parstack);
576: } else {
577: $finaloutput .= &recurse($$style_for_target{$token->[1]},$target,
578: $safeeval,$style_for_target,@$parstack);
579: }
580: } else {
581: $result = &callsub("start_$token->[1]", $target, $token, $stack,
582: $parstack, $pars, $safeeval, $style_for_target);
1.140 albertel 583: }
1.101 albertel 584: } elsif ($token->[0] eq 'E') {
585: #clear out any tags that didn't end
586: while ($token->[1] ne $$stack['-1'] && ($#$stack > -1)) {
1.150 albertel 587: my $lasttag=$$stack[-1];
588: if ($token->[1] =~ /^$lasttag$/i) {
589: &Apache::lonxml::warning('Using tag </'.$token->[1].'> as end tag to <'.$$stack[-1].'>');
590: last;
591: } else {
1.152 albertel 592: &Apache::lonxml::warning('Found tag </'.$token->[1].'> when looking for </'.$$stack[-1].'> in file');
1.150 albertel 593: &end_tag($stack,$parstack,$token);
594: }
1.101 albertel 595: }
1.140 albertel 596:
597: if (exists($$style_for_target{'/'."$token->[1]"})) {
1.101 albertel 598: if ($Apache::lonxml::redirection) {
599: $Apache::lonxml::outputstack['-1'] .=
600: &recurse($$style_for_target{'/'."$token->[1]"},
601: $target,$safeeval,$style_for_target,@$parstack);
602: } else {
603: $finaloutput .= &recurse($$style_for_target{'/'."$token->[1]"},
604: $target,$safeeval,$style_for_target,
605: @$parstack);
606: }
607: } else {
608: $result = &callsub("end_$token->[1]", $target, $token, $stack,
609: $parstack, $pars,$safeeval, $style_for_target);
610: }
611: } else {
612: &Apache::lonxml::error("Unknown token event :$token->[0]:$token->[1]:");
613: }
614: #evaluate variable refs in result
615: if ($result ne "") {
616: if ( $#$parstack > -1 ) {
1.169 albertel 617: $result=&Apache::run::evaluate($result,$safeeval,$$parstack[-1]);
1.101 albertel 618: } else {
1.169 albertel 619: $result= &Apache::run::evaluate($result,$safeeval,'');
1.101 albertel 620: }
1.163 albertel 621: }
1.169 albertel 622: # Encode any high ASCII characters
623: if (!$Apache::lonxml::prevent_entity_encode) {
624: $result=&HTML::Entities::encode($result,"\200-\377");
625: }
626: if ($Apache::lonxml::redirection) {
627: $Apache::lonxml::outputstack['-1'] .= $result;
628: } else {
629: $finaloutput.=$result;
630: }
631: $result = '';
632:
1.101 albertel 633: if ($token->[0] eq 'E') {
634: &end_tag($stack,$parstack,$token);
635: }
636: }
637: pop @$pars;
638: pop @Apache::lonxml::pwd;
639: }
640:
641: # if ($target eq 'meta') {
642: # $finaloutput.=&endredirection;
643: # }
644:
1.169 albertel 645:
1.101 albertel 646: if (($ENV{'QUERY_STRING'}) && ($target eq 'web')) {
647: $finaloutput=&afterburn($finaloutput);
648: }
649: return $finaloutput;
650: }
1.67 www 651:
1.15 albertel 652: sub recurse {
653: my @innerstack = ();
654: my @innerparstack = ();
655: my ($newarg,$target,$safeeval,$style_for_target,@parstack) = @_;
1.16 albertel 656: my @pat = ();
1.23 albertel 657: &newparser(\@pat,\$newarg);
1.15 albertel 658: my $tokenpat;
659: my $partstring = '';
660: my $output='';
1.16 albertel 661: my $decls='';
1.140 albertel 662: &Apache::lonxml::debug("Recursing");
1.16 albertel 663: while ( $#pat > -1 ) {
664: while ($tokenpat = $pat[$#pat]->get_token) {
1.57 albertel 665: if (($tokenpat->[0] eq 'T') || ($tokenpat->[0] eq 'C') || ($tokenpat->[0] eq 'D') ) {
1.61 albertel 666: if ($metamode<1) { $partstring=$tokenpat->[1]; }
1.57 albertel 667: } elsif ($tokenpat->[0] eq 'PI') {
1.61 albertel 668: if ($metamode<1) { $partstring=$tokenpat->[2]; }
1.16 albertel 669: } elsif ($tokenpat->[0] eq 'S') {
670: push (@innerstack,$tokenpat->[1]);
671: push (@innerparstack,&parstring($tokenpat));
1.19 albertel 672: &increasedepth($tokenpat);
1.84 albertel 673: $partstring = &callsub("start_$tokenpat->[1]", $target, $tokenpat,
674: \@innerstack, \@innerparstack, \@pat,
675: $safeeval, $style_for_target);
1.16 albertel 676: } elsif ($tokenpat->[0] eq 'E') {
677: #clear out any tags that didn't end
1.150 albertel 678: while ($tokenpat->[1] ne $innerstack[$#innerstack]
1.43 albertel 679: && ($#innerstack > -1)) {
1.150 albertel 680: my $lasttag=$innerstack[-1];
681: if ($tokenpat->[1] =~ /^$lasttag$/i) {
682: &Apache::lonxml::warning('Using tag </'.$tokenpat->[1].'> as end tag to <'.$innerstack[-1].'>');
683: last;
684: } else {
1.152 albertel 685: &Apache::lonxml::warning('Found tag </'.$tokenpat->[1].'> when looking for </'.$innerstack[-1].'> in file');
1.150 albertel 686: &end_tag(\@innerstack,\@innerparstack,$tokenpat);
687: }
1.43 albertel 688: }
1.84 albertel 689: $partstring = &callsub("end_$tokenpat->[1]", $target, $tokenpat,
690: \@innerstack, \@innerparstack, \@pat,
691: $safeeval, $style_for_target);
1.57 albertel 692: } else {
693: &Apache::lonxml::error("Unknown token event :$tokenpat->[0]:$tokenpat->[1]:");
1.16 albertel 694: }
695: #pass both the variable to the style tag, and the tag we
696: #are processing inside the <definedtag>
697: if ( $partstring ne "" ) {
698: if ( $#parstack > -1 ) {
699: if ( $#innerparstack > -1 ) {
700: $decls= $parstack[$#parstack].$innerparstack[$#innerparstack];
701: } else {
702: $decls= $parstack[$#parstack];
703: }
704: } else {
705: if ( $#innerparstack > -1 ) {
706: $decls=$innerparstack[$#innerparstack];
707: } else {
708: $decls='';
709: }
710: }
711: $output .= &Apache::run::evaluate($partstring,$safeeval,$decls);
712: $partstring = '';
713: }
1.17 albertel 714: if ($tokenpat->[0] eq 'E') { pop @innerstack;pop @innerparstack;
1.19 albertel 715: &decreasedepth($tokenpat);}
1.15 albertel 716: }
1.16 albertel 717: pop @pat;
1.23 albertel 718: pop @Apache::lonxml::pwd;
1.15 albertel 719: }
1.140 albertel 720: &Apache::lonxml::debug("Exiting Recursing");
1.15 albertel 721: return $output;
1.7 albertel 722: }
723:
724: sub callsub {
1.84 albertel 725: my ($sub,$target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.7 albertel 726: my $currentstring='';
1.72 albertel 727: my $nodefault;
1.7 albertel 728: {
1.59 albertel 729: my $sub1;
1.7 albertel 730: no strict 'refs';
1.68 www 731: my $tag=$token->[1];
1.141 albertel 732: my $space=$Apache::lonxml::alltags{$tag}[-1];
1.68 www 733: if (!$space) {
1.141 albertel 734: $tag=~tr/A-Z/a-z/;
1.68 www 735: $sub=~tr/A-Z/a-z/;
1.141 albertel 736: $space=$Apache::lonxml::alltags{$tag}[-1]
1.68 www 737: }
1.97 albertel 738:
739: my $deleted=0;
740: $Apache::lonxml::curdepth=join('_',@Apache::lonxml::depthcounter);
741: if (($token->[0] eq 'S') && ($target eq 'modified')) {
742: $deleted=&Apache::edit::handle_delete($space,$target,$token,$tagstack,
743: $parstack,$parser,$safeeval,
744: $style);
745: }
746: if (!$deleted) {
747: if ($space) {
1.152 albertel 748: #&Apache::lonxml::debug("Calling sub $sub in $space $metamode");
1.97 albertel 749: $sub1="$space\:\:$sub";
750: ($currentstring,$nodefault) = &$sub1($target,$token,$tagstack,
751: $parstack,$parser,$safeeval,
752: $style);
753: } else {
1.152 albertel 754: #&Apache::lonxml::debug("NOT Calling sub $sub in $space $metamode");
1.97 albertel 755: if ($metamode <1) {
756: if (defined($token->[4]) && ($metamode < 1)) {
757: $currentstring = $token->[4];
758: } else {
759: $currentstring = $token->[2];
760: }
1.62 sakharuk 761: }
1.7 albertel 762: }
1.97 albertel 763: # &Apache::lonxml::debug("nodefalt:$nodefault:");
764: if ($currentstring eq '' && $nodefault eq '') {
765: if ($target eq 'edit') {
766: &Apache::lonxml::debug("doing default edit for $token->[1]");
767: if ($token->[0] eq 'S') {
768: $currentstring = &Apache::edit::tag_start($target,$token);
769: } elsif ($token->[0] eq 'E') {
770: $currentstring = &Apache::edit::tag_end($target,$token);
771: }
772: } elsif ($target eq 'modified') {
773: if ($token->[0] eq 'S') {
774: $currentstring = $token->[4];
775: $currentstring.=&Apache::edit::handle_insert();
776: } else {
777: $currentstring = $token->[2];
778: }
1.72 albertel 779: }
780: }
1.7 albertel 781: }
782: use strict 'refs';
783: }
784: return $currentstring;
1.82 ng 785: }
786:
1.96 albertel 787: sub setup_globals {
1.172 albertel 788: my ($request,$target)=@_;
789: $Apache::lonxml::request=$request;
1.99 albertel 790: $Apache::lonxml::registered = 0;
1.101 albertel 791: @Apache::lonxml::pwd=();
1.124 albertel 792: @Apache::lonxml::extlinks=();
1.96 albertel 793: if ($target eq 'meta') {
794: $Apache::lonxml::redirection = 0;
795: $Apache::lonxml::metamode = 1;
796: $Apache::lonxml::evaluate = 1;
797: $Apache::lonxml::import = 0;
1.129 albertel 798: } elsif ($target eq 'answer') {
799: $Apache::lonxml::redirection = 0;
800: $Apache::lonxml::metamode = 1;
801: $Apache::lonxml::evaluate = 1;
802: $Apache::lonxml::import = 1;
1.96 albertel 803: } elsif ($target eq 'grade') {
804: &startredirection;
805: $Apache::lonxml::metamode = 0;
806: $Apache::lonxml::evaluate = 1;
807: $Apache::lonxml::import = 1;
808: } elsif ($target eq 'modified') {
809: $Apache::lonxml::redirection = 0;
810: $Apache::lonxml::metamode = 0;
811: $Apache::lonxml::evaluate = 0;
812: $Apache::lonxml::import = 0;
813: } elsif ($target eq 'edit') {
814: $Apache::lonxml::redirection = 0;
815: $Apache::lonxml::metamode = 0;
816: $Apache::lonxml::evaluate = 0;
817: $Apache::lonxml::import = 0;
1.163 albertel 818: } elsif ($target eq 'analyze') {
819: $Apache::lonxml::redirection = 0;
820: $Apache::lonxml::metamode = 0;
821: $Apache::lonxml::evaluate = 1;
822: $Apache::lonxml::import = 1;
1.96 albertel 823: } else {
824: $Apache::lonxml::redirection = 0;
825: $Apache::lonxml::metamode = 0;
826: $Apache::lonxml::evaluate = 1;
827: $Apache::lonxml::import = 1;
828: }
829: }
830:
1.82 ng 831: sub init_safespace {
832: my ($target,$safeeval,$safehole,$safeinit) = @_;
833: $safeeval->permit("entereval");
834: $safeeval->permit(":base_math");
835: $safeeval->permit("sort");
836: $safeeval->deny(":base_io");
1.102 albertel 837: $safehole->wrap(\&Apache::scripttag::xmlparse,$safeeval,'&xmlparse');
1.82 ng 838: $safehole->wrap(\&Apache::lonnet::EXT,$safeeval,'&EXT');
839:
840: $safehole->wrap(\&Math::Cephes::asin,$safeeval,'&asin');
841: $safehole->wrap(\&Math::Cephes::acos,$safeeval,'&acos');
842: $safehole->wrap(\&Math::Cephes::atan,$safeeval,'&atan');
843: $safehole->wrap(\&Math::Cephes::sinh,$safeeval,'&sinh');
844: $safehole->wrap(\&Math::Cephes::cosh,$safeeval,'&cosh');
845: $safehole->wrap(\&Math::Cephes::tanh,$safeeval,'&tanh');
846: $safehole->wrap(\&Math::Cephes::asinh,$safeeval,'&asinh');
847: $safehole->wrap(\&Math::Cephes::acosh,$safeeval,'&acosh');
848: $safehole->wrap(\&Math::Cephes::atanh,$safeeval,'&atanh');
849: $safehole->wrap(\&Math::Cephes::erf,$safeeval,'&erf');
850: $safehole->wrap(\&Math::Cephes::erfc,$safeeval,'&erfc');
851: $safehole->wrap(\&Math::Cephes::j0,$safeeval,'&j0');
852: $safehole->wrap(\&Math::Cephes::j1,$safeeval,'&j1');
853: $safehole->wrap(\&Math::Cephes::jn,$safeeval,'&jn');
854: $safehole->wrap(\&Math::Cephes::jv,$safeeval,'&jv');
855: $safehole->wrap(\&Math::Cephes::y0,$safeeval,'&y0');
856: $safehole->wrap(\&Math::Cephes::y1,$safeeval,'&y1');
857: $safehole->wrap(\&Math::Cephes::yn,$safeeval,'&yn');
858: $safehole->wrap(\&Math::Cephes::yv,$safeeval,'&yv');
1.91 ng 859: $safehole->wrap(\&Math::Random::random_beta,$safeeval,'&math_random_beta');
860: $safehole->wrap(\&Math::Random::random_chi_square,$safeeval,'&math_random_chi_square');
861: $safehole->wrap(\&Math::Random::random_exponential,$safeeval,'&math_random_exponential');
862: $safehole->wrap(\&Math::Random::random_f,$safeeval,'&math_random_f');
863: $safehole->wrap(\&Math::Random::random_gamma,$safeeval,'&math_random_gamma');
864: $safehole->wrap(\&Math::Random::random_multivariate_normal,$safeeval,'&math_random_multivariate_normal');
865: $safehole->wrap(\&Math::Random::random_multinomial,$safeeval,'&math_random_multinomial');
866: $safehole->wrap(\&Math::Random::random_noncentral_chi_square,$safeeval,'&math_random_noncentral_chi_square');
867: $safehole->wrap(\&Math::Random::random_noncentral_f,$safeeval,'&math_random_noncentral_f');
868: $safehole->wrap(\&Math::Random::random_normal,$safeeval,'&math_random_normal');
869: $safehole->wrap(\&Math::Random::random_permutation,$safeeval,'&math_random_permutation');
1.93 ng 870: $safehole->wrap(\&Math::Random::random_permuted_index,$safeeval,'&math_random_permuted_index');
1.91 ng 871: $safehole->wrap(\&Math::Random::random_uniform,$safeeval,'&math_random_uniform');
872: $safehole->wrap(\&Math::Random::random_poisson,$safeeval,'&math_random_poisson');
873: $safehole->wrap(\&Math::Random::random_uniform_integer,$safeeval,'&math_random_uniform_integer');
874: $safehole->wrap(\&Math::Random::random_negative_binomial,$safeeval,'&math_random_negative_binomial');
875: $safehole->wrap(\&Math::Random::random_binomial,$safeeval,'&math_random_binomial');
876: $safehole->wrap(\&Math::Random::random_seed_from_phrase,$safeeval,'&random_seed_from_phrase');
877: $safehole->wrap(\&Math::Random::random_set_seed_from_phrase,$safeeval,'&random_set_seed_from_phrase');
878: $safehole->wrap(\&Math::Random::random_get_seed,$safeeval,'&random_get_seed');
879: $safehole->wrap(\&Math::Random::random_set_seed,$safeeval,'&random_set_seed');
880:
1.82 ng 881: #need to inspect this class of ops
882: # $safeeval->deny(":base_orig");
1.91 ng 883: $safeinit .= ';$external::target="'.$target.'";';
1.121 albertel 884: my $rndseed;
1.123 albertel 885: my ($symb,$courseid,$domain,$name) = &Apache::lonxml::whichuser();
886: $rndseed=&Apache::lonnet::rndseed($symb,$courseid,$domain,$name);
1.121 albertel 887: $safeinit .= ';$external::randomseed='.$rndseed.';';
1.82 ng 888: &Apache::run::run($safeinit,$safeeval);
1.17 albertel 889: }
890:
1.55 albertel 891: sub startredirection {
892: $Apache::lonxml::redirection++;
893: push (@Apache::lonxml::outputstack, '');
894: }
895:
896: sub endredirection {
897: if (!$Apache::lonxml::redirection) {
1.72 albertel 898: &Apache::lonxml::error("Endredirection was called, before a startredirection, perhaps you have unbalanced tags. Some debuging information:".join ":",caller);
1.55 albertel 899: return '';
900: }
901: $Apache::lonxml::redirection--;
902: pop @Apache::lonxml::outputstack;
1.97 albertel 903: }
904:
905: sub end_tag {
906: my ($tagstack,$parstack,$token)=@_;
907: pop(@$tagstack);
908: pop(@$parstack);
909: &decreasedepth($token);
1.55 albertel 910: }
911:
1.17 albertel 912: sub initdepth {
913: @Apache::lonxml::depthcounter=();
914: $Apache::lonxml::depth=-1;
915: $Apache::lonxml::olddepth=-1;
916: }
917:
918: sub increasedepth {
1.19 albertel 919: my ($token) = @_;
1.17 albertel 920: $Apache::lonxml::depth++;
921: $Apache::lonxml::depthcounter[$Apache::lonxml::depth]++;
922: if ($Apache::lonxml::depthcounter[$Apache::lonxml::depth]==1) {
923: $Apache::lonxml::olddepth=$Apache::lonxml::depth;
924: }
1.42 albertel 925: my $curdepth=join('_',@Apache::lonxml::depthcounter);
1.64 albertel 926: &Apache::lonxml::debug("s $Apache::lonxml::depth : $Apache::lonxml::olddepth : $curdepth : $token->[1]\n");
1.54 albertel 927: #print "<br />s $Apache::lonxml::depth : $Apache::lonxml::olddepth : $curdepth : $token->[1]\n";
1.17 albertel 928: }
929:
930: sub decreasedepth {
1.19 albertel 931: my ($token) = @_;
1.17 albertel 932: $Apache::lonxml::depth--;
1.36 albertel 933: if ($Apache::lonxml::depth<$Apache::lonxml::olddepth-1) {
934: $#Apache::lonxml::depthcounter--;
935: $Apache::lonxml::olddepth=$Apache::lonxml::depth+1;
936: }
1.43 albertel 937: if ( $Apache::lonxml::depth < -1) {
1.140 albertel 938: &Apache::lonxml::warning("Missing tags, unable to properly run file.");
1.43 albertel 939: $Apache::lonxml::depth='-1';
940: }
1.42 albertel 941: my $curdepth=join('_',@Apache::lonxml::depthcounter);
1.64 albertel 942: &Apache::lonxml::debug("e $Apache::lonxml::depth : $Apache::lonxml::olddepth : $token->[1] : $curdepth\n");
1.54 albertel 943: #print "<br />e $Apache::lonxml::depth : $Apache::lonxml::olddepth : $token->[1] : $curdepth\n";
1.1 sakharuk 944: }
1.19 albertel 945:
1.180 albertel 946: sub get_all_text_unbalanced {
947: my($tag,$pars)= @_;
948: my $token;
949: my $result='';
950: $tag='<'.$tag.'>';
951: while ($token = $$pars[-1]->get_token) {
952: if (($token->[0] eq 'T')||($token->[0] eq 'C')||($token->[0] eq 'D')) {
953: $result.=$token->[1];
954: } elsif ($token->[0] eq 'PI') {
955: $result.=$token->[2];
956: } elsif ($token->[0] eq 'S') {
957: $result.=$token->[4];
958: } elsif ($token->[0] eq 'E') {
959: $result.=$token->[2];
960: }
961: if ($result =~ /(.*)$tag(.*)/) {
962: &Apache::lonxml::debug('Got a winner with leftovers ::'.$2);
963: &Apache::lonxml::debug('Result is :'.$1);
964: $result=$1;
965: my $redo=$tag.$2;
966: &Apache::lonxml::newparser($pars,\$redo);
967: last;
968: }
969: }
970: return $result
971: }
972:
1.19 albertel 973: sub get_all_text {
974: my($tag,$pars)= @_;
975: my $depth=0;
976: my $token;
977: my $result='';
1.57 albertel 978: if ( $tag =~ m:^/: ) {
979: my $tag=substr($tag,1);
980: # &Apache::lonxml::debug("have:$tag:");
981: while (($depth >=0) && ($token = $pars->get_token)) {
982: # &Apache::lonxml::debug("e token:$token->[0]:$depth:$token->[1]");
983: if (($token->[0] eq 'T')||($token->[0] eq 'C')||($token->[0] eq 'D')) {
984: $result.=$token->[1];
985: } elsif ($token->[0] eq 'PI') {
986: $result.=$token->[2];
987: } elsif ($token->[0] eq 'S') {
1.151 albertel 988: if ($token->[1] =~ /^$tag$/i) { $depth++; }
1.57 albertel 989: $result.=$token->[4];
990: } elsif ($token->[0] eq 'E') {
1.151 albertel 991: if ( $token->[1] =~ /^$tag$/i) { $depth--; }
1.57 albertel 992: #skip sending back the last end tag
993: if ($depth > -1) { $result.=$token->[2]; } else {
994: $pars->unget_token($token);
995: }
996: }
997: }
998: } else {
999: while ($token = $pars->get_token) {
1000: # &Apache::lonxml::debug("s token:$token->[0]:$depth:$token->[1]");
1001: if (($token->[0] eq 'T')||($token->[0] eq 'C')||($token->[0] eq 'D')) {
1002: $result.=$token->[1];
1003: } elsif ($token->[0] eq 'PI') {
1004: $result.=$token->[2];
1005: } elsif ($token->[0] eq 'S') {
1.151 albertel 1006: if ( $token->[1] =~ /^$tag$/i) {
1.57 albertel 1007: $pars->unget_token($token); last;
1008: } else {
1009: $result.=$token->[4];
1010: }
1011: } elsif ($token->[0] eq 'E') {
1012: $result.=$token->[2];
1.36 albertel 1013: }
1.19 albertel 1014: }
1015: }
1.49 albertel 1016: # &Apache::lonxml::debug("Exit:$result:");
1.19 albertel 1017: return $result
1018: }
1019:
1.23 albertel 1020: sub newparser {
1021: my ($parser,$contentref,$dir) = @_;
1.167 albertel 1022: push (@$parser,HTML::LCParser->new($contentref));
1.56 albertel 1023: $$parser['-1']->xml_mode('1');
1.23 albertel 1024: if ( $dir eq '' ) {
1025: push (@Apache::lonxml::pwd, $Apache::lonxml::pwd[$#Apache::lonxml::pwd]);
1026: } else {
1027: push (@Apache::lonxml::pwd, $dir);
1028: }
1029: # &Apache::lonxml::debug("pwd:$#Apache::lonxml::pwd");
1030: # &Apache::lonxml::debug("pwd:$Apache::lonxml::pwd[$#Apache::lonxml::pwd]");
1031: }
1.1 sakharuk 1032:
1.8 albertel 1033: sub parstring {
1034: my ($token) = @_;
1035: my $temp='';
1.142 albertel 1036: foreach (@{$token->[3]}) {
1.35 www 1037: unless ($_=~/\W/) {
1.42 albertel 1038: my $val=$token->[2]->{$_};
1.150 albertel 1039: $val =~ s/([\%\@\\\"])/\\$1/g;
1.51 albertel 1040: #if ($val =~ m/^[\%\@]/) { $val="\\".$val; }
1.42 albertel 1041: $temp .= "my \$$_=\"$val\";"
1.20 albertel 1042: }
1.142 albertel 1043: }
1.8 albertel 1044: return $temp;
1045: }
1.22 albertel 1046:
1.34 www 1047: sub writeallows {
1.126 www 1048: unless ($#extlinks>=0) { return; }
1.34 www 1049: my $thisurl='/res/'.&Apache::lonnet::declutter(shift);
1.111 www 1050: if ($ENV{'httpref.'.$thisurl}) {
1051: $thisurl=$ENV{'httpref.'.$thisurl};
1052: }
1.34 www 1053: my $thisdir=$thisurl;
1054: $thisdir=~s/\/[^\/]+$//;
1055: my %httpref=();
1.142 albertel 1056: foreach (@extlinks) {
1.34 www 1057: $httpref{'httpref.'.
1.125 www 1058: &Apache::lonnet::hreflocation($thisdir,$_)}=$thisurl;
1.142 albertel 1059: }
1.126 www 1060: @extlinks=();
1.34 www 1061: &Apache::lonnet::appenv(%httpref);
1062: }
1063:
1.66 www 1064: #
1065: # Afterburner handles anchors, highlights and links
1066: #
1067: sub afterburn {
1068: my $result=shift;
1.154 albertel 1069: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
1070: ['highlight','anchor','link']);
1.66 www 1071: if ($ENV{'form.highlight'}) {
1.142 albertel 1072: foreach (split(/\,/,$ENV{'form.highlight'})) {
1.66 www 1073: my $anchorname=$_;
1074: my $matchthis=$anchorname;
1075: $matchthis=~s/\_+/\\s\+/g;
1076: $result=~s/($matchthis)/\<font color=\"red\"\>$1\<\/font\>/gs;
1.142 albertel 1077: }
1.66 www 1078: }
1079: if ($ENV{'form.link'}) {
1.142 albertel 1080: foreach (split(/\,/,$ENV{'form.link'})) {
1.66 www 1081: my ($anchorname,$linkurl)=split(/\>/,$_);
1082: my $matchthis=$anchorname;
1083: $matchthis=~s/\_+/\\s\+/g;
1084: $result=~s/($matchthis)/\<a href=\"$linkurl\"\>$1\<\/a\>/gs;
1.142 albertel 1085: }
1.66 www 1086: }
1087: if ($ENV{'form.anchor'}) {
1088: my $anchorname=$ENV{'form.anchor'};
1089: my $matchthis=$anchorname;
1090: $matchthis=~s/\_+/\\s\+/g;
1091: $result=~s/($matchthis)/\<a name=\"$anchorname\"\>$1\<\/a\>/s;
1092: $result.=(<<"ENDSCRIPT");
1093: <script>
1094: document.location.hash='$anchorname';
1095: </script>
1096: ENDSCRIPT
1097: }
1098: return $result;
1099: }
1100:
1.79 www 1101: sub storefile {
1102: my ($file,$contents)=@_;
1103: if (my $fh=Apache::File->new('>'.$file)) {
1104: print $fh $contents;
1105: $fh->close();
1.147 albertel 1106: } else {
1107: &warning("Unable to save file $file");
1.79 www 1108: }
1109: }
1110:
1.151 albertel 1111: sub createnewhtml {
1112: my $filecontents=(<<SIMPLECONTENT);
1.78 www 1113: <html>
1114: <head>
1115: <title>
1116: Title of Document Goes Here
1117: </title>
1118: </head>
1119: <body bgcolor="#FFFFFF">
1120:
1121: Body of Document Goes Here
1122:
1123: </body>
1124: </html>
1125: SIMPLECONTENT
1.151 albertel 1126: return $filecontents;
1127: }
1128:
1.147 albertel 1129:
1.151 albertel 1130: sub inserteditinfo {
1131: my ($result,$filecontents)=@_;
1.157 albertel 1132: $filecontents = &HTML::Entities::encode($filecontents);
1.147 albertel 1133: # my $editheader='<a href="#editsection">Edit below</a><hr />';
1.161 albertel 1134: my $buttons=(<<BUTTONS);
1135: <input type="submit" name="attemptclean"
1136: value="Save and then attempt to clean HTML" />
1137: <input type="submit" name="savethisfile" value="Save this" />
1138: <input type="submit" name="viewmode" value="View" />
1139: BUTTONS
1.78 www 1140: my $editfooter=(<<ENDFOOTER);
1141: <hr />
1142: <a name="editsection" />
1143: <form method="post">
1.161 albertel 1144: <input type="hidden" name="editmode" value="Edit" />
1.170 www 1145: $buttons<br />
1.78 www 1146: <textarea cols="80" rows="40" name="filecont">$filecontents</textarea>
1.170 www 1147: <br />$buttons
1.78 www 1148: <br />
1149: </form>
1150: ENDFOOTER
1.147 albertel 1151: # $result=~s/(\<body[^\>]*\>)/$1$editheader/is;
1.78 www 1152: $result=~s/(\<\/body\>)/$editfooter/is;
1153: return $result;
1154: }
1155:
1.152 albertel 1156: sub get_target {
1157: my $viewgrades=&Apache::lonnet::allowed('vgr',$ENV{'request.course.id'});
1158: if ( $ENV{'request.state'} eq 'published') {
1159: if ( defined($ENV{'form.grade_target'})
1160: && ($viewgrades == 'F' )) {
1161: return ($ENV{'form.grade_target'});
1.153 albertel 1162: } elsif (defined($ENV{'form.grade_target'})) {
1163: if (($ENV{'form.grade_target'} eq 'web') ||
1164: ($ENV{'form.grade_target'} eq 'tex') ) {
1165: return $ENV{'form.grade_target'}
1166: } else {
1167: return 'web';
1168: }
1.152 albertel 1169: } else {
1170: return 'web';
1171: }
1172: } elsif ($ENV{'request.state'} eq 'construct') {
1173: if ( defined($ENV{'form.grade_target'})) {
1174: return ($ENV{'form.grade_target'});
1175: } else {
1176: return 'web';
1177: }
1178: } else {
1179: return 'web';
1180: }
1181: }
1182:
1.24 sakharuk 1183: sub handler {
1184: my $request=shift;
1.68 www 1185:
1.152 albertel 1186: my $target=&get_target();
1.68 www 1187:
1.65 albertel 1188: $Apache::lonxml::debug=0;
1.68 www 1189:
1.25 sakharuk 1190: if ($ENV{'browser.mathml'}) {
1.27 albertel 1191: $request->content_type('text/xml');
1192: } else {
1193: $request->content_type('text/html');
1.25 sakharuk 1194: }
1.141 albertel 1195: &Apache::loncommon::no_cache($request);
1.27 albertel 1196: $request->send_http_header;
1.141 albertel 1197:
1.45 www 1198: return OK if $request->header_only;
1.27 albertel 1199:
1.79 www 1200:
1201: my $file=&Apache::lonnet::filelocation("",$request->uri);
1.78 www 1202: #
1203: # Edit action? Save file.
1204: #
1205: unless ($ENV{'request.state'} eq 'published') {
1.107 www 1206: if (($ENV{'form.savethisfile'}) || ($ENV{'form.attemptclean'})) {
1.79 www 1207: &storefile($file,$ENV{'form.filecont'});
1.78 www 1208: }
1209: }
1.24 sakharuk 1210: my %mystyle;
1.147 albertel 1211: my $result = '';
1.50 albertel 1212: my $filecontents=&Apache::lonnet::getfile($file);
1213: if ($filecontents == -1) {
1.78 www 1214: $result=(<<ENDNOTFOUND);
1215: <html>
1216: <head>
1217: <title>File not found</title>
1218: </head>
1219: <body bgcolor="#FFFFFF">
1220: <b>File not found: $file</b>
1221: </body>
1222: </html>
1223: ENDNOTFOUND
1.50 albertel 1224: $filecontents='';
1.151 albertel 1225: if ($ENV{'request.state'} ne 'published') {
1226: $filecontents=&createnewhtml();
1.161 albertel 1227: $ENV{'form.editmode'}='Edit'; #force edit mode
1.151 albertel 1228: }
1.50 albertel 1229: } else {
1.147 albertel 1230: unless ($ENV{'request.state'} eq 'published') {
1231: if ($ENV{'form.attemptclean'}) {
1232: $filecontents=&htmlclean($filecontents,1);
1.107 www 1233: }
1.147 albertel 1234: }
1.161 albertel 1235: if (!$ENV{'form.editmode'} || $ENV{'form.viewmode'}) {
1.172 albertel 1236: $result = &Apache::lonxml::xmlparse($request,$target,$filecontents,
1237: '',%mystyle);
1.147 albertel 1238: }
1.78 www 1239: }
1240:
1241: #
1242: # Edit action? Insert editing commands
1243: #
1244: unless ($ENV{'request.state'} eq 'published') {
1.161 albertel 1245: if ($ENV{'form.editmode'} && (!($ENV{'form.viewmode'}))) {
1.177 www 1246: my $displayfile=$request->uri;
1247: $displayfile=~s/^\/[^\/]*//;
1248: $result='<html><body bgcolor="#FFFFFF"><h3>'.$displayfile.
1249: '</h3></body></html>';
1.78 www 1250: $result=&inserteditinfo($result,$filecontents);
1.147 albertel 1251: }
1.66 www 1252: }
1.147 albertel 1253:
1.126 www 1254: writeallows($request->uri);
1.50 albertel 1255:
1.67 www 1256: $request->print($result);
1.64 albertel 1257:
1.45 www 1258: return OK;
1.24 sakharuk 1259: }
1.147 albertel 1260:
1.22 albertel 1261: sub debug {
1262: if ($Apache::lonxml::debug eq 1) {
1.146 albertel 1263: $|=1;
1.180 albertel 1264: print("DEBUG:".&HTML::Entities::encode($_[0])."<br />\n");
1.22 albertel 1265: }
1266: }
1.49 albertel 1267:
1.22 albertel 1268: sub error {
1.74 albertel 1269: if (($Apache::lonxml::debug eq 1) || ($ENV{'request.state'} eq 'construct') ) {
1.166 matthew 1270: # If printing in construction space, put the error inside <pre></pre>
1.167 albertel 1271: print "<b>ERROR:</b>".join("\n",@_)."\n";
1.52 albertel 1272: } else {
1273: print "<b>An Error occured while processing this resource. The instructor has been notified.</b> <br />";
1274: #notify author
1.146 albertel 1275: &Apache::lonmsg::author_res_msg($ENV{'request.filename'},join('<br />',@_));
1.52 albertel 1276: #notify course
1277: if ( $ENV{'request.course.id'} ) {
1278: my $users=$ENV{'course.'.$ENV{'request.course.id'}.'.comment.email'};
1.143 www 1279: my $declutter=&Apache::lonnet::declutter($ENV{'request.filename'});
1.52 albertel 1280: foreach my $user (split /\,/, $users) {
1281: ($user,my $domain) = split /:/, $user;
1.143 www 1282: &Apache::lonmsg::user_normal_msg($user,$domain,
1.146 albertel 1283: "Error [$declutter]",join('<br />',@_));
1.52 albertel 1284: }
1285: }
1.74 albertel 1286:
1.52 albertel 1287: #FIXME probably shouldn't have me get everything forever.
1.146 albertel 1288: &Apache::lonmsg::user_normal_msg('albertel','msu',"Error in $ENV{'request.filename'}",join('<br />',@_));
1.74 albertel 1289: #&Apache::lonmsg::user_normal_msg('albertel','103',"Error in $ENV{'request.filename'}",$_[0]);
1.52 albertel 1290: }
1.22 albertel 1291: }
1.49 albertel 1292:
1.22 albertel 1293: sub warning {
1.73 harris41 1294: if ($ENV{'request.state'} eq 'construct') {
1.146 albertel 1295: print "<b>W</b>ARNING<b>:</b>".join('<br />',@_)."<br />\n";
1.73 harris41 1296: }
1.83 albertel 1297: }
1298:
1299: sub get_param {
1300: my ($param,$parstack,$safeeval,$context) = @_;
1301: if ( ! $context ) { $context = -1; }
1302: my $args ='';
1303: if ( $#$parstack > (-2-$context) ) { $args=$$parstack[$context]; }
1.157 albertel 1304: if ( ! $args ) { return undef; }
1.131 albertel 1305: if ( $args =~ /my \$$param=\"/ ) {
1306: return &Apache::run::run("{$args;".'return $'.$param.'}',$safeeval); #'
1307: } else {
1308: return undef;
1309: }
1.22 albertel 1310: }
1311:
1.132 albertel 1312: sub get_param_var {
1313: my ($param,$parstack,$safeeval,$context) = @_;
1314: if ( ! $context ) { $context = -1; }
1315: my $args ='';
1316: if ( $#$parstack > (-2-$context) ) { $args=$$parstack[$context]; }
1317: if ( $args !~ /my \$$param=\"/ ) { return undef; }
1318: my $value=&Apache::run::run("{$args;".'return $'.$param.'}',$safeeval); #'
1319: if ($value =~ /^[\$\@\%]/) {
1320: return &Apache::run::run("return $value",$safeeval,1);
1321: } else {
1322: return $value;
1323: }
1324: }
1325:
1.74 albertel 1326: sub register_insert {
1.75 albertel 1327: my @data = split /\n/, &Apache::lonnet::getfile('/home/httpd/lonTabs/insertlist.tab');
1.74 albertel 1328: my $i;
1.76 albertel 1329: my $tagnum=0;
1.74 albertel 1330: my @order;
1331: for ($i=0;$i < $#data; $i++) {
1332: my $line = $data[$i];
1333: if ( $line =~ /^\#/ || $line =~ /^\s*\n/) { next; }
1334: if ( $line =~ /TABLE/ ) { last; }
1.92 albertel 1335: my ($tag,$descrip,$color,$function,$show) = split(/,/, $line);
1.135 albertel 1336: if ($tag) {
1337: $insertlist{"$tagnum.tag"} = $tag;
1338: $insertlist{"$tagnum.description"} = $descrip;
1339: $insertlist{"$tagnum.color"} = $color;
1340: $insertlist{"$tagnum.function"} = $function;
1341: if (!defined($show)) { $show='yes'; }
1342: $insertlist{"$tagnum.show"}= $show;
1343: $insertlist{"$tag.num"}=$tagnum;
1344: $tagnum++;
1345: }
1.74 albertel 1346: }
1.76 albertel 1347: $i++; #skipping TABLE line
1348: $tagnum = 0;
1.74 albertel 1349: for (;$i < $#data;$i++) {
1350: my $line = $data[$i];
1.76 albertel 1351: my ($mnemonic,@which) = split(/ +/,$line);
1352: my $tag = $insertlist{"$tagnum.tag"};
1.144 matthew 1353: for (my $j=0;$j <=$#which;$j++) {
1.74 albertel 1354: if ( $which[$j] eq 'Y' ) {
1.76 albertel 1355: if ($insertlist{"$j.show"} ne 'no') {
1356: push(@{ $insertlist{"$tag.which"} },$j);
1357: }
1.74 albertel 1358: }
1359: }
1.76 albertel 1360: $tagnum++;
1.74 albertel 1361: }
1362: }
1.98 albertel 1363:
1364: sub description {
1365: my ($token)=@_;
1.138 albertel 1366: my $tagnum;
1367: my $tag=$token->[1];
1368: foreach my $namespace (reverse @Apache::lonxml::namespace) {
1369: my $testtag=$namespace.'::'.$tag;
1370: $tagnum=$insertlist{"$testtag.num"};
1371: if (defined($tagnum)) { last; }
1372: }
1373: if (!defined ($tagnum)) { $tagnum=$Apache::lonxml::insertlist{"$tag.num"}; }
1374: return $insertlist{$tagnum.'.description'};
1.98 albertel 1375: }
1.123 albertel 1376:
1377: # ----------------------------------------------------------------- whichuser
1378: # returns a list of $symb, $courseid, $domain, $name that is correct for
1379: # calls to lonnet functions for this setup.
1380: # - looks for form.grade_ parameters
1381: sub whichuser {
1.134 albertel 1382: my ($symb,$courseid,$domain,$name);
1.123 albertel 1383: if (defined($ENV{'form.grade_symb'})) {
1384: my $tmp_courseid=$ENV{'form.grade_courseid'};
1385: my $allowed=&Apache::lonnet::allowed('mgr',$tmp_courseid);
1386: if ($allowed) {
1387: $symb=$ENV{'form.grade_symb'};
1388: $courseid=$ENV{'form.grade_courseid'};
1389: $domain=$ENV{'form.grade_domain'};
1390: $name=$ENV{'form.grade_username'};
1391: }
1.134 albertel 1392: } else {
1393: $symb=&Apache::lonnet::symbread();
1394: $courseid=$ENV{'request.course.id'};
1395: $domain=$ENV{'user.domain'};
1396: $name=$ENV{'user.name'};
1.123 albertel 1397: }
1398: return ($symb,$courseid,$domain,$name);
1399: }
1400:
1.1 sakharuk 1401: 1;
1402: __END__
1.68 www 1403:
1404:
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