Annotation of loncom/xml/lonxml.pm, revision 1.165
1.2 sakharuk 1: # The LearningOnline Network with CAPA
1.3 sakharuk 2: # XML Parser Module
1.2 sakharuk 3: #
1.165 ! matthew 4: # $Id: lonxml.pm,v 1.164 2002/04/03 18:47:39 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
1.76 albertel 63: qw(@pwd @outputstack $redirection $import @extlinks $metamode $evaluate %insertlist @namespace);
1.1 sakharuk 64: use strict;
1.161 albertel 65: use HTML::TokeParser();
66: use HTML::TreeBuilder();
67: use HTML::Entities();
68: use Safe();
69: use Safe::Hole();
70: use Math::Cephes();
71: use Math::Random();
72: use Opcode();
1.72 albertel 73:
74: sub register {
1.141 albertel 75: my ($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:
1.99 albertel 132: # has the dynamic menu been updated to know about this resource
133: $Apache::lonxml::registered=0;
134:
1.68 www 135: sub xmlbegin {
136: my $output='';
137: if ($ENV{'browser.mathml'}) {
138: $output='<?xml version="1.0"?>'
139: .'<?xml-stylesheet type="text/css" href="/adm/MathML/mathml.css"?>'
140: .'<!DOCTYPE html SYSTEM "/adm/MathML/mathml.dtd" '
141: .'[<!ENTITY mathns "http://www.w3.org/1998/Math/MathML">]>'
142: .'<html xmlns:math="http://www.w3.org/1998/Math/MathML" '
143: .'xmlns="http://www.w3.org/TR/REC-html40">';
144: } else {
145: $output='<html>';
146: }
147: return $output;
148: }
149:
150: sub xmlend {
1.103 www 151: my $discussion='';
152: if ($ENV{'request.course.id'}) {
1.109 www 153: my $crs='/'.$ENV{'request.course.id'};
154: if ($ENV{'request.course.sec'}) {
155: $crs.='_'.$ENV{'request.course.sec'};
156: }
157: $crs=~s/\_/\//g;
158: my $seeid=&Apache::lonnet::allowed('rin',$crs);
1.103 www 159: my $symb=&Apache::lonnet::symbread();
160: if ($symb) {
161: my %contrib=&Apache::lonnet::restore($symb,$ENV{'request.course.id'},
162: $ENV{'course.'.$ENV{'request.course.id'}.'.domain'},
163: $ENV{'course.'.$ENV{'request.course.id'}.'.num'});
164: if ($contrib{'version'}) {
165: $discussion.=
166: '<address><hr /><h2>Course Discussion of Resource</h2>';
167: my $idx;
168: for ($idx=1;$idx<=$contrib{'version'};$idx++) {
1.110 www 169: my $hidden=($contrib{'hidden'}=~/\.$idx\./);
170: unless (($hidden) && (!$seeid)) {
171: my $message=$contrib{$idx.':message'};
172: $message=~s/\n/\<br \/\>/g;
173: if ($message) {
174: if ($hidden) {
175: $message='<font color="#888888">'.$message.'</font>';
176: }
1.109 www 177: my $sender='Anonymous';
178: if ((!$contrib{$idx.':anonymous'}) || ($seeid)) {
1.164 www 179: $sender=$contrib{$idx.':plainname'}.' ('.
180: $contrib{$idx.':sendername'}.' at '.
181: $contrib{$idx.':senderdomain'}.')';
1.109 www 182: if ($contrib{$idx.':anonymous'}) {
1.164 www 183: $sender.=' [anonymous] '.
184: $contrib{$idx.':screenname'};
1.110 www 185: }
186: if ($seeid) {
187: if ($hidden) {
188: $sender.=' <a href="/adm/feedback?unhide='.
189: $symb.':::'.$idx.'">Make Visible</a>';
190: } else {
191: $sender.=' <a href="/adm/feedback?hide='.
192: $symb.':::'.$idx.'">Hide</a>';
193: }
1.109 www 194: }
1.164 www 195: } else {
196: if ($contrib{$idx.':screenname'}) {
197: $sender='<i>'.$contrib{$idx.':screenname'}.'</i>';
198: }
1.109 www 199: }
200: $discussion.='<p><b>'.$sender.'</b> ('.
1.103 www 201: localtime($contrib{$idx.':timestamp'}).
202: '):<blockquote>'.$message.
1.110 www 203: '</blockquote></p>';
204: }
205: }
1.103 www 206: }
207: $discussion.='</address>';
208: }
209: }
210: }
211: return $discussion.'</html>';
1.119 www 212: }
213:
214: sub tokeninputfield {
1.120 www 215: my $defhost=$Apache::lonnet::perlvar{'lonHostID'};
216: $defhost=~tr/a-z/A-Z/;
1.119 www 217: return (<<ENDINPUTFIELD)
1.120 www 218: <script>
219: function updatetoken() {
220: var comp=new Array;
221: var barcode=unescape(document.tokeninput.barcode.value);
222: comp=barcode.split('*');
223: if (typeof(comp[0])!="undefined") {
224: document.tokeninput.codeone.value=comp[0];
225: }
226: if (typeof(comp[1])!="undefined") {
227: document.tokeninput.codetwo.value=comp[1];
228: }
229: if (typeof(comp[2])!="undefined") {
230: comp[2]=comp[2].toUpperCase();
231: document.tokeninput.codethree.value=comp[2];
232: }
233: document.tokeninput.barcode.value='';
234: }
235: </script>
236: <form method="post" name="tokeninput">
1.119 www 237: <table border="2" bgcolor="#FFFFBB">
238: <tr><th>DocID Checkin</th></tr>
239: <tr><td>
240: <table>
241: <tr>
242: <td>Scan in Barcode</td>
1.120 www 243: <td><input type="text" size="22" name="barcode"
244: onChange="updatetoken()"/></td>
1.119 www 245: </tr>
246: <tr><td><i>or</i> Type in DocID</td>
247: <td>
248: <input type="text" size="5" name="codeone" />
1.120 www 249: <b><font size="+2">*</font></b>
1.119 www 250: <input type="text" size="5" name="codetwo" />
1.120 www 251: <b><font size="+2">*</font></b>
252: <input type="text" size="10" name="codethree" value="$defhost"
253: onChange="this.value=this.value.toUpperCase()" />
1.119 www 254: </td></tr>
255: </table>
256: </td></tr>
257: <tr><td><input type="submit" value="Check in DocID" /></td></tr>
258: </table>
259: </form>
260: ENDINPUTFIELD
1.112 www 261: }
262:
1.116 www 263: sub maketoken {
1.118 www 264: my ($symb,$tuname,$tudom,$tcrsid)=@_;
1.112 www 265: unless ($symb) {
266: $symb=&Apache::lonnet::symbread();
267: }
268: unless ($tuname) {
269: $tuname=$ENV{'user.name'};
270: $tudom=$ENV{'user.domain'};
271: $tcrsid=$ENV{'request.course.id'};
272: }
1.116 www 273:
1.118 www 274: return &Apache::lonnet::checkout($symb,$tuname,$tudom,$tcrsid);
275: }
276:
277: sub printtokenheader {
1.133 albertel 278: my ($target,$token,$tsymb,$tcrsid,$tudom,$tuname)=@_;
1.116 www 279: unless ($token) { return ''; }
1.118 www 280:
1.133 albertel 281: my ($symb,$courseid,$domain,$name) = &Apache::lonxml::whichuser();
282: unless ($tsymb) {
283: $tsymb=$symb;
1.118 www 284: }
285: unless ($tuname) {
1.133 albertel 286: $tuname=$name;
287: $tudom=$domain;
288: $tcrsid=$courseid;
1.118 www 289: }
1.114 www 290:
291: my %reply=&Apache::lonnet::get('environment',
292: ['firstname','middlename','lastname','generation'],
293: $tudom,$tuname);
294: my $plainname=$reply{'firstname'}.' '.
295: $reply{'middlename'}.' '.
296: $reply{'lastname'}.' '.
297: $reply{'generation'};
298:
1.112 www 299: if ($target eq 'web') {
1.145 www 300: my %idhash=&Apache::lonnet::idrget($tudom,($tuname));
1.115 www 301: return
302: '<img align="right" src="/cgi-bin/barcode.gif?encode='.$token.'" />'.
303: 'Checked out for '.$plainname.
1.114 www 304: '<br />User: '.$tuname.' at '.$tudom.
1.145 www 305: '<br />ID: '.$idhash{$tuname}.
1.117 www 306: '<br />CourseID: '.$tcrsid.
1.145 www 307: '<br />Course: '.$ENV{'course.'.$tcrsid.'.description'}.
1.114 www 308: '<br />DocID: '.$token.
1.116 www 309: '<br />Time: '.localtime().'<hr />';
1.112 www 310: } else {
1.121 albertel 311: return $token;
1.112 www 312: }
1.68 www 313: }
314:
1.70 www 315: sub fontsettings() {
316: my $headerstring='';
317: if (($ENV{'browser.os'} eq 'mac') && (!$ENV{'browser.mathml'})) {
318: $headerstring.=
319: '<meta Content-Type="text/html; charset=x-mac-roman">';
320: }
321: return $headerstring;
322: }
323:
1.68 www 324: sub registerurl {
1.100 www 325: my $forcereg=shift;
1.155 matthew 326: my $target = shift;
327: my $result = '';
1.160 www 328: if (($ENV{'request.publicaccess'}) ||
329: ($ENV{'REQUEST_URI'} eq '/res/adm/pages/menu.html')) {
1.130 www 330: return
331: '<script>function LONCAPAreg(){} function LONCAPAstale(){}</script>';
332: }
1.128 albertel 333: if ($Apache::lonxml::registered && !$forcereg) { return ''; }
1.105 albertel 334: $Apache::lonxml::registered=1;
1.159 www 335: my $nothing='';
336: if ($ENV{'browser.type'} eq 'explorer') { $nothing='javascript:void(0);'; }
1.100 www 337: if (($ENV{'REQUEST_URI'}!~/^\/(res\/)*adm\//) || ($forcereg)) {
1.87 www 338: my $hwkadd='';
339: if ($ENV{'REQUEST_URI'}=~/\.(problem|exam|quiz|assess|survey|form)$/) {
340: if (&Apache::lonnet::allowed('vgr',$ENV{'request.course.id'})) {
341: $hwkadd.=(<<ENDSUBM);
342: menu.switchbutton
343: (7,1,'subm.gif','view sub','missions',
1.88 www 344: 'gocmd("/adm/grades","submission")');
1.87 www 345: ENDSUBM
346: }
347: if (&Apache::lonnet::allowed('mgr',$ENV{'request.course.id'})) {
348: $hwkadd.=(<<ENDGRDS);
349: menu.switchbutton
350: (7,2,'pgrd.gif','problem','grades',
1.88 www 351: 'gocmd("/adm/grades","viewgrades")');
1.87 www 352: ENDGRDS
353: }
354: if (&Apache::lonnet::allowed('opa',$ENV{'request.course.id'})) {
355: $hwkadd.=(<<ENDPARM);
356: menu.switchbutton
357: (7,3,'pparm.gif','problem','parms',
1.88 www 358: 'gocmd("/adm/parmset","set")');
1.87 www 359: ENDPARM
360: }
361: }
1.155 matthew 362: $result = (<<ENDREGTHIS);
1.87 www 363:
1.68 www 364: <script language="JavaScript">
1.71 www 365: // BEGIN LON-CAPA Internal
1.86 www 366:
1.69 www 367: function LONCAPAreg() {
1.159 www 368: menu=window.open("$nothing","LONCAPAmenu","",false);
1.86 www 369: menu.clearTimeout(menu.menucltim);
1.69 www 370: menu.currentURL=window.location.pathname;
371: menu.currentStale=0;
1.85 www 372: menu.clearbut(3,1);
373: menu.switchbutton
1.108 www 374: (6,3,'catalog.gif','catalog','info','catalog_info()');
375: menu.switchbutton
1.85 www 376: (8,1,'eval.gif','evaluate','this','gopost("/adm/evaluate",currentURL)');
377: menu.switchbutton
378: (8,2,'fdbk.gif','feedback','on this','gopost("/adm/feedback",currentURL)');
379: menu.switchbutton
380: (8,3,'prt.gif','prepare','printout','gopost("/adm/printout",currentURL)');
381: menu.switchbutton
382: (2,1,'back.gif','backward','','gopost("/adm/flip","back:"+currentURL)');
383: menu.switchbutton
384: (2,3,'forw.gif','forward','','gopost("/adm/flip","forward:"+currentURL)');
1.94 www 385: menu.switchbutton
386: (9,1,'sbkm.gif','set','bookmark','set_bookmark()');
387: menu.switchbutton
388: (9,2,'vbkm.gif','view','bookmark','edit_bookmarks()');
389: menu.switchbutton
1.95 www 390: (9,3,'anot.gif','anno-','tations','annotate()');
1.87 www 391: $hwkadd
1.69 www 392: }
1.86 www 393:
1.69 www 394: function LONCAPAstale() {
1.159 www 395: menu=window.open("$nothing","LONCAPAmenu","",false);
1.86 www 396: menu.currentStale=1;
1.127 www 397: menu.switchbutton
398: (3,1,'reload.gif','return','location','go(currentURL)');
399: menu.clearbut(7,1);
400: menu.clearbut(7,2);
401: menu.clearbut(7,3);
1.86 www 402: menu.menucltim=menu.setTimeout(
1.94 www 403: 'clearbut(2,1);clearbut(2,3);clearbut(8,1);clearbut(8,2);clearbut(8,3);'+
1.108 www 404: 'clearbut(9,1);clearbut(9,2);clearbut(9,3);clearbut(6,3)',
1.86 www 405: 2000);
406:
1.87 www 407: }
1.86 www 408:
409: // END LON-CAPA Internal
410: </script>
411: ENDREGTHIS
412:
413: } else {
1.155 matthew 414: $result = (<<ENDDONOTREGTHIS);
1.86 www 415:
416: <script language="JavaScript">
417: // BEGIN LON-CAPA Internal
418:
419: function LONCAPAreg() {
1.159 www 420: menu=window.open("$nothing","LONCAPAmenu","",false);
1.69 www 421: menu.currentStale=1;
1.85 www 422: menu.clearbut(2,1);
423: menu.clearbut(2,3);
424: menu.clearbut(8,1);
425: menu.clearbut(8,2);
426: menu.clearbut(8,3);
1.86 www 427: if (menu.currentURL) {
428: menu.switchbutton
429: (3,1,'reload.gif','return','location','go(currentURL)');
430: } else {
431: menu.clearbut(3,1);
432: }
433: }
434:
435: function LONCAPAstale() {
1.68 www 436: }
1.86 www 437:
1.71 www 438: // END LON-CAPA Internal
1.68 www 439: </script>
1.86 www 440: ENDDONOTREGTHIS
441: }
1.155 matthew 442: if ($target eq 'edit') {
1.156 matthew 443: # Javascript routines for construction space:
444: # openbrowser and opensearcher will start the file browser
445: # (lonindexer) and searcher (lonsearchcat) respectively.
446: # Inputs are the name of the html form being used
447: # and the name of the element the selected URL should
448: # be placed in.
1.165 ! matthew 449: # openbrowser also takes arguments only and omit, which are
! 450: # comma deliminated lists of file extensions to (only) show
! 451: # or omit.
! 452: # Here we also set currentURL=null.
1.155 matthew 453: $result .=<<"ENDBROWSERSCRIPT";
454: <script>
1.165 ! matthew 455: menu.currentURL=null;
1.156 matthew 456: var editbrowser;
1.162 matthew 457: function openbrowser(formname,elementname,only,omit) {
1.155 matthew 458: var url = '/res/?';
1.156 matthew 459: if (editbrowser == null) {
1.155 matthew 460: url += 'launch=1&';
461: }
462: url += 'catalogmode=interactive&';
463: url += 'mode=edit&';
464: url += 'form=' + formname + '&';
1.162 matthew 465: if (only != null) {
466: url += 'only=' + only + '&';
467: }
468: if (omit != null) {
469: url += 'omit=' + omit + '&';
470: }
1.155 matthew 471: url += 'element=' + elementname + '';
472: var title = 'Browser';
473: var options = 'scrollbars=1,resizable=1,menubar=0';
474: options += ',width=700,height=600';
1.156 matthew 475: editbrowser = open(url,title,options,'1');
476: editbrowser.focus();
477: }
478: var editsearcher;
479: function opensearcher(formname,elementname) {
480: var url = '/adm/searchcat?';
481: if (editsearcher == null) {
482: url += 'launch=1&';
483: }
484: url += 'catalogmode=interactive&';
485: url += 'mode=edit&';
486: url += 'form=' + formname + '&';
487: url += 'element=' + elementname + '';
488: var title = 'Search';
489: var options = 'scrollbars=1,resizable=1,menubar=0';
490: options += ',width=700,height=600';
491: editsearcher = open(url,title,options,'1');
492: editsearcher.focus();
1.155 matthew 493: }
494: </script>
495: ENDBROWSERSCRIPT
496: }
497: return $result;
1.69 www 498: }
499:
500: sub loadevents() {
501: return 'LONCAPAreg();';
502: }
503:
504: sub unloadevents() {
505: return 'LONCAPAstale();';
1.68 www 506: }
507:
1.48 albertel 508: sub printalltags {
509: my $temp;
510: foreach $temp (sort keys %Apache::lonxml::alltags) {
1.141 albertel 511: &Apache::lonxml::debug("$temp -- ".
512: join(',',@{ $Apache::lonxml::alltags{$temp} }));
1.48 albertel 513: }
514: }
1.31 sakharuk 515:
1.3 sakharuk 516: sub xmlparse {
1.18 albertel 517: my ($target,$content_file_string,$safeinit,%style_for_target) = @_;
1.96 albertel 518:
519: &setup_globals($target);
1.48 albertel 520: #&printalltags();
1.16 albertel 521: my @pars = ();
1.23 albertel 522: my $pwd=$ENV{'request.filename'};
523: $pwd =~ s:/[^/]*$::;
524: &newparser(\@pars,\$content_file_string,$pwd);
1.24 sakharuk 525:
1.3 sakharuk 526: my $safeeval = new Safe;
1.40 albertel 527: my $safehole = new Safe::Hole;
1.82 ng 528: &init_safespace($target,$safeeval,$safehole,$safeinit);
1.3 sakharuk 529: #-------------------- Redefinition of the target in the case of compound target
530:
531: ($target, my @tenta) = split('&&',$target);
532:
1.150 albertel 533: my @stack = ();
1.3 sakharuk 534: my @parstack = ();
1.17 albertel 535: &initdepth;
1.67 www 536:
1.101 albertel 537: my $finaloutput = &inner_xmlparse($target,\@stack,\@parstack,\@pars,
538: $safeeval,\%style_for_target);
1.125 www 539: if ($ENV{'request.uri'}) {
540: &writeallows($ENV{'request.uri'});
541: }
1.3 sakharuk 542: return $finaloutput;
1.106 www 543: }
544:
545: sub htmlclean {
1.107 www 546: my ($raw,$full)=@_;
1.106 www 547:
548: my $tree = HTML::TreeBuilder->new;
549: $tree->ignore_unknown(0);
1.140 albertel 550:
1.106 www 551: $tree->parse($raw);
552:
1.107 www 553: my $output= $tree->as_HTML(undef,' ');
1.140 albertel 554:
1.161 albertel 555: $output=~s/\<(br|hr|img|meta|allow)(.*?)\>/\<$1$2 \/\>/gis;
1.111 www 556: $output=~s/\<\/(br|hr|img|meta|allow)\>//gis;
1.107 www 557: unless ($full) {
558: $output=~s/\<[\/]*(body|head|html)\>//gis;
559: }
1.106 www 560:
561: $tree = $tree->delete;
562:
563: return $output;
1.15 albertel 564: }
565:
1.101 albertel 566: sub inner_xmlparse {
567: my ($target,$stack,$parstack,$pars,$safeeval,$style_for_target)=@_;
568: my $finaloutput = '';
569: my $result;
570: my $token;
571: while ( $#$pars > -1 ) {
572: while ($token = $$pars['-1']->get_token) {
573: if (($token->[0] eq 'T') || ($token->[0] eq 'C') || ($token->[0] eq 'D') ) {
574: if ($metamode<1) {
575: $result=$token->[1];
576: }
577: } elsif ($token->[0] eq 'PI') {
578: if ($metamode<1) {
579: $result=$token->[2];
580: }
581: } elsif ($token->[0] eq 'S') {
1.140 albertel 582: # add tag to stack
1.101 albertel 583: push (@$stack,$token->[1]);
584: # add parameters list to another stack
585: push (@$parstack,&parstring($token));
1.140 albertel 586: &increasedepth($token);
1.101 albertel 587: if (exists $$style_for_target{$token->[1]}) {
588: if ($Apache::lonxml::redirection) {
1.140 albertel 589: $Apache::lonxml::outputstack['-1'] .=
1.101 albertel 590: &recurse($$style_for_target{$token->[1]},$target,$safeeval,
591: $style_for_target,@$parstack);
592: } else {
593: $finaloutput .= &recurse($$style_for_target{$token->[1]},$target,
594: $safeeval,$style_for_target,@$parstack);
595: }
596: } else {
597: $result = &callsub("start_$token->[1]", $target, $token, $stack,
598: $parstack, $pars, $safeeval, $style_for_target);
1.140 albertel 599: }
1.101 albertel 600: } elsif ($token->[0] eq 'E') {
601: #clear out any tags that didn't end
602: while ($token->[1] ne $$stack['-1'] && ($#$stack > -1)) {
1.150 albertel 603: my $lasttag=$$stack[-1];
604: if ($token->[1] =~ /^$lasttag$/i) {
605: &Apache::lonxml::warning('Using tag </'.$token->[1].'> as end tag to <'.$$stack[-1].'>');
606: last;
607: } else {
1.152 albertel 608: &Apache::lonxml::warning('Found tag </'.$token->[1].'> when looking for </'.$$stack[-1].'> in file');
1.150 albertel 609: &end_tag($stack,$parstack,$token);
610: }
1.101 albertel 611: }
1.140 albertel 612:
613: if (exists($$style_for_target{'/'."$token->[1]"})) {
1.101 albertel 614: if ($Apache::lonxml::redirection) {
615: $Apache::lonxml::outputstack['-1'] .=
616: &recurse($$style_for_target{'/'."$token->[1]"},
617: $target,$safeeval,$style_for_target,@$parstack);
618: } else {
619: $finaloutput .= &recurse($$style_for_target{'/'."$token->[1]"},
620: $target,$safeeval,$style_for_target,
621: @$parstack);
622: }
623: } else {
624: $result = &callsub("end_$token->[1]", $target, $token, $stack,
625: $parstack, $pars,$safeeval, $style_for_target);
626: }
627: } else {
628: &Apache::lonxml::error("Unknown token event :$token->[0]:$token->[1]:");
629: }
630: #evaluate variable refs in result
631: if ($result ne "") {
632: if ( $#$parstack > -1 ) {
633: if ($Apache::lonxml::redirection) {
634: $Apache::lonxml::outputstack['-1'] .=
635: &Apache::run::evaluate($result,$safeeval,$$parstack['-1']);
636: } else {
637: $finaloutput .= &Apache::run::evaluate($result,$safeeval,
638: $$parstack['-1']);
639: }
640: } else {
641: $finaloutput .= &Apache::run::evaluate($result,$safeeval,'');
642: }
643: $result = '';
1.163 albertel 644: }
1.101 albertel 645: if ($token->[0] eq 'E') {
646: &end_tag($stack,$parstack,$token);
647: }
648: }
649: pop @$pars;
650: pop @Apache::lonxml::pwd;
651: }
652:
653: # if ($target eq 'meta') {
654: # $finaloutput.=&endredirection;
655: # }
656:
657: if (($ENV{'QUERY_STRING'}) && ($target eq 'web')) {
658: $finaloutput=&afterburn($finaloutput);
659: }
660: return $finaloutput;
661: }
1.67 www 662:
1.15 albertel 663: sub recurse {
664: my @innerstack = ();
665: my @innerparstack = ();
666: my ($newarg,$target,$safeeval,$style_for_target,@parstack) = @_;
1.16 albertel 667: my @pat = ();
1.23 albertel 668: &newparser(\@pat,\$newarg);
1.15 albertel 669: my $tokenpat;
670: my $partstring = '';
671: my $output='';
1.16 albertel 672: my $decls='';
1.140 albertel 673: &Apache::lonxml::debug("Recursing");
1.16 albertel 674: while ( $#pat > -1 ) {
675: while ($tokenpat = $pat[$#pat]->get_token) {
1.57 albertel 676: if (($tokenpat->[0] eq 'T') || ($tokenpat->[0] eq 'C') || ($tokenpat->[0] eq 'D') ) {
1.61 albertel 677: if ($metamode<1) { $partstring=$tokenpat->[1]; }
1.57 albertel 678: } elsif ($tokenpat->[0] eq 'PI') {
1.61 albertel 679: if ($metamode<1) { $partstring=$tokenpat->[2]; }
1.16 albertel 680: } elsif ($tokenpat->[0] eq 'S') {
681: push (@innerstack,$tokenpat->[1]);
682: push (@innerparstack,&parstring($tokenpat));
1.19 albertel 683: &increasedepth($tokenpat);
1.84 albertel 684: $partstring = &callsub("start_$tokenpat->[1]", $target, $tokenpat,
685: \@innerstack, \@innerparstack, \@pat,
686: $safeeval, $style_for_target);
1.16 albertel 687: } elsif ($tokenpat->[0] eq 'E') {
688: #clear out any tags that didn't end
1.150 albertel 689: while ($tokenpat->[1] ne $innerstack[$#innerstack]
1.43 albertel 690: && ($#innerstack > -1)) {
1.150 albertel 691: my $lasttag=$innerstack[-1];
692: if ($tokenpat->[1] =~ /^$lasttag$/i) {
693: &Apache::lonxml::warning('Using tag </'.$tokenpat->[1].'> as end tag to <'.$innerstack[-1].'>');
694: last;
695: } else {
1.152 albertel 696: &Apache::lonxml::warning('Found tag </'.$tokenpat->[1].'> when looking for </'.$innerstack[-1].'> in file');
1.150 albertel 697: &end_tag(\@innerstack,\@innerparstack,$tokenpat);
698: }
1.43 albertel 699: }
1.84 albertel 700: $partstring = &callsub("end_$tokenpat->[1]", $target, $tokenpat,
701: \@innerstack, \@innerparstack, \@pat,
702: $safeeval, $style_for_target);
1.57 albertel 703: } else {
704: &Apache::lonxml::error("Unknown token event :$tokenpat->[0]:$tokenpat->[1]:");
1.16 albertel 705: }
706: #pass both the variable to the style tag, and the tag we
707: #are processing inside the <definedtag>
708: if ( $partstring ne "" ) {
709: if ( $#parstack > -1 ) {
710: if ( $#innerparstack > -1 ) {
711: $decls= $parstack[$#parstack].$innerparstack[$#innerparstack];
712: } else {
713: $decls= $parstack[$#parstack];
714: }
715: } else {
716: if ( $#innerparstack > -1 ) {
717: $decls=$innerparstack[$#innerparstack];
718: } else {
719: $decls='';
720: }
721: }
722: $output .= &Apache::run::evaluate($partstring,$safeeval,$decls);
723: $partstring = '';
724: }
1.17 albertel 725: if ($tokenpat->[0] eq 'E') { pop @innerstack;pop @innerparstack;
1.19 albertel 726: &decreasedepth($tokenpat);}
1.15 albertel 727: }
1.16 albertel 728: pop @pat;
1.23 albertel 729: pop @Apache::lonxml::pwd;
1.15 albertel 730: }
1.140 albertel 731: &Apache::lonxml::debug("Exiting Recursing");
1.15 albertel 732: return $output;
1.7 albertel 733: }
734:
735: sub callsub {
1.84 albertel 736: my ($sub,$target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.7 albertel 737: my $currentstring='';
1.72 albertel 738: my $nodefault;
1.7 albertel 739: {
1.59 albertel 740: my $sub1;
1.7 albertel 741: no strict 'refs';
1.68 www 742: my $tag=$token->[1];
1.141 albertel 743: my $space=$Apache::lonxml::alltags{$tag}[-1];
1.68 www 744: if (!$space) {
1.141 albertel 745: $tag=~tr/A-Z/a-z/;
1.68 www 746: $sub=~tr/A-Z/a-z/;
1.141 albertel 747: $space=$Apache::lonxml::alltags{$tag}[-1]
1.68 www 748: }
1.97 albertel 749:
750: my $deleted=0;
751: $Apache::lonxml::curdepth=join('_',@Apache::lonxml::depthcounter);
752: if (($token->[0] eq 'S') && ($target eq 'modified')) {
753: $deleted=&Apache::edit::handle_delete($space,$target,$token,$tagstack,
754: $parstack,$parser,$safeeval,
755: $style);
756: }
757: if (!$deleted) {
758: if ($space) {
1.152 albertel 759: #&Apache::lonxml::debug("Calling sub $sub in $space $metamode");
1.97 albertel 760: $sub1="$space\:\:$sub";
761: ($currentstring,$nodefault) = &$sub1($target,$token,$tagstack,
762: $parstack,$parser,$safeeval,
763: $style);
764: } else {
1.152 albertel 765: #&Apache::lonxml::debug("NOT Calling sub $sub in $space $metamode");
1.97 albertel 766: if ($metamode <1) {
767: if (defined($token->[4]) && ($metamode < 1)) {
768: $currentstring = $token->[4];
769: } else {
770: $currentstring = $token->[2];
771: }
1.62 sakharuk 772: }
1.7 albertel 773: }
1.97 albertel 774: # &Apache::lonxml::debug("nodefalt:$nodefault:");
775: if ($currentstring eq '' && $nodefault eq '') {
776: if ($target eq 'edit') {
777: &Apache::lonxml::debug("doing default edit for $token->[1]");
778: if ($token->[0] eq 'S') {
779: $currentstring = &Apache::edit::tag_start($target,$token);
780: } elsif ($token->[0] eq 'E') {
781: $currentstring = &Apache::edit::tag_end($target,$token);
782: }
783: } elsif ($target eq 'modified') {
784: if ($token->[0] eq 'S') {
785: $currentstring = $token->[4];
786: $currentstring.=&Apache::edit::handle_insert();
787: } else {
788: $currentstring = $token->[2];
789: }
1.72 albertel 790: }
791: }
1.7 albertel 792: }
793: use strict 'refs';
794: }
795: return $currentstring;
1.82 ng 796: }
797:
1.96 albertel 798: sub setup_globals {
799: my ($target)=@_;
1.99 albertel 800: $Apache::lonxml::registered = 0;
1.101 albertel 801: @Apache::lonxml::pwd=();
1.124 albertel 802: @Apache::lonxml::extlinks=();
1.96 albertel 803: if ($target eq 'meta') {
804: $Apache::lonxml::redirection = 0;
805: $Apache::lonxml::metamode = 1;
806: $Apache::lonxml::evaluate = 1;
807: $Apache::lonxml::import = 0;
1.129 albertel 808: } elsif ($target eq 'answer') {
809: $Apache::lonxml::redirection = 0;
810: $Apache::lonxml::metamode = 1;
811: $Apache::lonxml::evaluate = 1;
812: $Apache::lonxml::import = 1;
1.96 albertel 813: } elsif ($target eq 'grade') {
814: &startredirection;
815: $Apache::lonxml::metamode = 0;
816: $Apache::lonxml::evaluate = 1;
817: $Apache::lonxml::import = 1;
818: } elsif ($target eq 'modified') {
819: $Apache::lonxml::redirection = 0;
820: $Apache::lonxml::metamode = 0;
821: $Apache::lonxml::evaluate = 0;
822: $Apache::lonxml::import = 0;
823: } elsif ($target eq 'edit') {
824: $Apache::lonxml::redirection = 0;
825: $Apache::lonxml::metamode = 0;
826: $Apache::lonxml::evaluate = 0;
827: $Apache::lonxml::import = 0;
1.163 albertel 828: } elsif ($target eq 'analyze') {
829: $Apache::lonxml::redirection = 0;
830: $Apache::lonxml::metamode = 0;
831: $Apache::lonxml::evaluate = 1;
832: $Apache::lonxml::import = 1;
1.96 albertel 833: } else {
834: $Apache::lonxml::redirection = 0;
835: $Apache::lonxml::metamode = 0;
836: $Apache::lonxml::evaluate = 1;
837: $Apache::lonxml::import = 1;
838: }
839: }
840:
1.82 ng 841: sub init_safespace {
842: my ($target,$safeeval,$safehole,$safeinit) = @_;
843: $safeeval->permit("entereval");
844: $safeeval->permit(":base_math");
845: $safeeval->permit("sort");
846: $safeeval->deny(":base_io");
1.102 albertel 847: $safehole->wrap(\&Apache::scripttag::xmlparse,$safeeval,'&xmlparse');
1.82 ng 848: $safehole->wrap(\&Apache::lonnet::EXT,$safeeval,'&EXT');
849:
850: $safehole->wrap(\&Math::Cephes::asin,$safeeval,'&asin');
851: $safehole->wrap(\&Math::Cephes::acos,$safeeval,'&acos');
852: $safehole->wrap(\&Math::Cephes::atan,$safeeval,'&atan');
853: $safehole->wrap(\&Math::Cephes::sinh,$safeeval,'&sinh');
854: $safehole->wrap(\&Math::Cephes::cosh,$safeeval,'&cosh');
855: $safehole->wrap(\&Math::Cephes::tanh,$safeeval,'&tanh');
856: $safehole->wrap(\&Math::Cephes::asinh,$safeeval,'&asinh');
857: $safehole->wrap(\&Math::Cephes::acosh,$safeeval,'&acosh');
858: $safehole->wrap(\&Math::Cephes::atanh,$safeeval,'&atanh');
859: $safehole->wrap(\&Math::Cephes::erf,$safeeval,'&erf');
860: $safehole->wrap(\&Math::Cephes::erfc,$safeeval,'&erfc');
861: $safehole->wrap(\&Math::Cephes::j0,$safeeval,'&j0');
862: $safehole->wrap(\&Math::Cephes::j1,$safeeval,'&j1');
863: $safehole->wrap(\&Math::Cephes::jn,$safeeval,'&jn');
864: $safehole->wrap(\&Math::Cephes::jv,$safeeval,'&jv');
865: $safehole->wrap(\&Math::Cephes::y0,$safeeval,'&y0');
866: $safehole->wrap(\&Math::Cephes::y1,$safeeval,'&y1');
867: $safehole->wrap(\&Math::Cephes::yn,$safeeval,'&yn');
868: $safehole->wrap(\&Math::Cephes::yv,$safeeval,'&yv');
1.91 ng 869: $safehole->wrap(\&Math::Random::random_beta,$safeeval,'&math_random_beta');
870: $safehole->wrap(\&Math::Random::random_chi_square,$safeeval,'&math_random_chi_square');
871: $safehole->wrap(\&Math::Random::random_exponential,$safeeval,'&math_random_exponential');
872: $safehole->wrap(\&Math::Random::random_f,$safeeval,'&math_random_f');
873: $safehole->wrap(\&Math::Random::random_gamma,$safeeval,'&math_random_gamma');
874: $safehole->wrap(\&Math::Random::random_multivariate_normal,$safeeval,'&math_random_multivariate_normal');
875: $safehole->wrap(\&Math::Random::random_multinomial,$safeeval,'&math_random_multinomial');
876: $safehole->wrap(\&Math::Random::random_noncentral_chi_square,$safeeval,'&math_random_noncentral_chi_square');
877: $safehole->wrap(\&Math::Random::random_noncentral_f,$safeeval,'&math_random_noncentral_f');
878: $safehole->wrap(\&Math::Random::random_normal,$safeeval,'&math_random_normal');
879: $safehole->wrap(\&Math::Random::random_permutation,$safeeval,'&math_random_permutation');
1.93 ng 880: $safehole->wrap(\&Math::Random::random_permuted_index,$safeeval,'&math_random_permuted_index');
1.91 ng 881: $safehole->wrap(\&Math::Random::random_uniform,$safeeval,'&math_random_uniform');
882: $safehole->wrap(\&Math::Random::random_poisson,$safeeval,'&math_random_poisson');
883: $safehole->wrap(\&Math::Random::random_uniform_integer,$safeeval,'&math_random_uniform_integer');
884: $safehole->wrap(\&Math::Random::random_negative_binomial,$safeeval,'&math_random_negative_binomial');
885: $safehole->wrap(\&Math::Random::random_binomial,$safeeval,'&math_random_binomial');
886: $safehole->wrap(\&Math::Random::random_seed_from_phrase,$safeeval,'&random_seed_from_phrase');
887: $safehole->wrap(\&Math::Random::random_set_seed_from_phrase,$safeeval,'&random_set_seed_from_phrase');
888: $safehole->wrap(\&Math::Random::random_get_seed,$safeeval,'&random_get_seed');
889: $safehole->wrap(\&Math::Random::random_set_seed,$safeeval,'&random_set_seed');
890:
1.82 ng 891: #need to inspect this class of ops
892: # $safeeval->deny(":base_orig");
1.91 ng 893: $safeinit .= ';$external::target="'.$target.'";';
1.121 albertel 894: my $rndseed;
1.123 albertel 895: my ($symb,$courseid,$domain,$name) = &Apache::lonxml::whichuser();
896: $rndseed=&Apache::lonnet::rndseed($symb,$courseid,$domain,$name);
1.121 albertel 897: $safeinit .= ';$external::randomseed='.$rndseed.';';
1.82 ng 898: &Apache::run::run($safeinit,$safeeval);
1.17 albertel 899: }
900:
1.55 albertel 901: sub startredirection {
902: $Apache::lonxml::redirection++;
903: push (@Apache::lonxml::outputstack, '');
904: }
905:
906: sub endredirection {
907: if (!$Apache::lonxml::redirection) {
1.72 albertel 908: &Apache::lonxml::error("Endredirection was called, before a startredirection, perhaps you have unbalanced tags. Some debuging information:".join ":",caller);
1.55 albertel 909: return '';
910: }
911: $Apache::lonxml::redirection--;
912: pop @Apache::lonxml::outputstack;
1.97 albertel 913: }
914:
915: sub end_tag {
916: my ($tagstack,$parstack,$token)=@_;
917: pop(@$tagstack);
918: pop(@$parstack);
919: &decreasedepth($token);
1.55 albertel 920: }
921:
1.17 albertel 922: sub initdepth {
923: @Apache::lonxml::depthcounter=();
924: $Apache::lonxml::depth=-1;
925: $Apache::lonxml::olddepth=-1;
926: }
927:
928: sub increasedepth {
1.19 albertel 929: my ($token) = @_;
1.17 albertel 930: $Apache::lonxml::depth++;
931: $Apache::lonxml::depthcounter[$Apache::lonxml::depth]++;
932: if ($Apache::lonxml::depthcounter[$Apache::lonxml::depth]==1) {
933: $Apache::lonxml::olddepth=$Apache::lonxml::depth;
934: }
1.42 albertel 935: my $curdepth=join('_',@Apache::lonxml::depthcounter);
1.64 albertel 936: &Apache::lonxml::debug("s $Apache::lonxml::depth : $Apache::lonxml::olddepth : $curdepth : $token->[1]\n");
1.54 albertel 937: #print "<br />s $Apache::lonxml::depth : $Apache::lonxml::olddepth : $curdepth : $token->[1]\n";
1.17 albertel 938: }
939:
940: sub decreasedepth {
1.19 albertel 941: my ($token) = @_;
1.17 albertel 942: $Apache::lonxml::depth--;
1.36 albertel 943: if ($Apache::lonxml::depth<$Apache::lonxml::olddepth-1) {
944: $#Apache::lonxml::depthcounter--;
945: $Apache::lonxml::olddepth=$Apache::lonxml::depth+1;
946: }
1.43 albertel 947: if ( $Apache::lonxml::depth < -1) {
1.140 albertel 948: &Apache::lonxml::warning("Missing tags, unable to properly run file.");
1.43 albertel 949: $Apache::lonxml::depth='-1';
950: }
1.42 albertel 951: my $curdepth=join('_',@Apache::lonxml::depthcounter);
1.64 albertel 952: &Apache::lonxml::debug("e $Apache::lonxml::depth : $Apache::lonxml::olddepth : $token->[1] : $curdepth\n");
1.54 albertel 953: #print "<br />e $Apache::lonxml::depth : $Apache::lonxml::olddepth : $token->[1] : $curdepth\n";
1.1 sakharuk 954: }
1.19 albertel 955:
956: sub get_all_text {
957:
958: my($tag,$pars)= @_;
959: my $depth=0;
960: my $token;
961: my $result='';
1.57 albertel 962: if ( $tag =~ m:^/: ) {
963: my $tag=substr($tag,1);
964: # &Apache::lonxml::debug("have:$tag:");
965: while (($depth >=0) && ($token = $pars->get_token)) {
966: # &Apache::lonxml::debug("e token:$token->[0]:$depth:$token->[1]");
967: if (($token->[0] eq 'T')||($token->[0] eq 'C')||($token->[0] eq 'D')) {
968: $result.=$token->[1];
969: } elsif ($token->[0] eq 'PI') {
970: $result.=$token->[2];
971: } elsif ($token->[0] eq 'S') {
1.151 albertel 972: if ($token->[1] =~ /^$tag$/i) { $depth++; }
1.57 albertel 973: $result.=$token->[4];
974: } elsif ($token->[0] eq 'E') {
1.151 albertel 975: if ( $token->[1] =~ /^$tag$/i) { $depth--; }
1.57 albertel 976: #skip sending back the last end tag
977: if ($depth > -1) { $result.=$token->[2]; } else {
978: $pars->unget_token($token);
979: }
980: }
981: }
982: } else {
983: while ($token = $pars->get_token) {
984: # &Apache::lonxml::debug("s token:$token->[0]:$depth:$token->[1]");
985: if (($token->[0] eq 'T')||($token->[0] eq 'C')||($token->[0] eq 'D')) {
986: $result.=$token->[1];
987: } elsif ($token->[0] eq 'PI') {
988: $result.=$token->[2];
989: } elsif ($token->[0] eq 'S') {
1.151 albertel 990: if ( $token->[1] =~ /^$tag$/i) {
1.57 albertel 991: $pars->unget_token($token); last;
992: } else {
993: $result.=$token->[4];
994: }
995: } elsif ($token->[0] eq 'E') {
996: $result.=$token->[2];
1.36 albertel 997: }
1.19 albertel 998: }
999: }
1.49 albertel 1000: # &Apache::lonxml::debug("Exit:$result:");
1.19 albertel 1001: return $result
1002: }
1003:
1.23 albertel 1004: sub newparser {
1005: my ($parser,$contentref,$dir) = @_;
1006: push (@$parser,HTML::TokeParser->new($contentref));
1.56 albertel 1007: $$parser['-1']->xml_mode('1');
1.163 albertel 1008: # $$parser['-1']->attr_encoded('1');
1.23 albertel 1009: if ( $dir eq '' ) {
1010: push (@Apache::lonxml::pwd, $Apache::lonxml::pwd[$#Apache::lonxml::pwd]);
1011: } else {
1012: push (@Apache::lonxml::pwd, $dir);
1013: }
1014: # &Apache::lonxml::debug("pwd:$#Apache::lonxml::pwd");
1015: # &Apache::lonxml::debug("pwd:$Apache::lonxml::pwd[$#Apache::lonxml::pwd]");
1016: }
1.1 sakharuk 1017:
1.8 albertel 1018: sub parstring {
1019: my ($token) = @_;
1020: my $temp='';
1.142 albertel 1021: foreach (@{$token->[3]}) {
1.35 www 1022: unless ($_=~/\W/) {
1.42 albertel 1023: my $val=$token->[2]->{$_};
1.150 albertel 1024: $val =~ s/([\%\@\\\"])/\\$1/g;
1.51 albertel 1025: #if ($val =~ m/^[\%\@]/) { $val="\\".$val; }
1.42 albertel 1026: $temp .= "my \$$_=\"$val\";"
1.20 albertel 1027: }
1.142 albertel 1028: }
1.8 albertel 1029: return $temp;
1030: }
1.22 albertel 1031:
1.34 www 1032: sub writeallows {
1.126 www 1033: unless ($#extlinks>=0) { return; }
1.34 www 1034: my $thisurl='/res/'.&Apache::lonnet::declutter(shift);
1.111 www 1035: if ($ENV{'httpref.'.$thisurl}) {
1036: $thisurl=$ENV{'httpref.'.$thisurl};
1037: }
1.34 www 1038: my $thisdir=$thisurl;
1039: $thisdir=~s/\/[^\/]+$//;
1040: my %httpref=();
1.142 albertel 1041: foreach (@extlinks) {
1.34 www 1042: $httpref{'httpref.'.
1.125 www 1043: &Apache::lonnet::hreflocation($thisdir,$_)}=$thisurl;
1.142 albertel 1044: }
1.126 www 1045: @extlinks=();
1.34 www 1046: &Apache::lonnet::appenv(%httpref);
1047: }
1048:
1.66 www 1049: #
1050: # Afterburner handles anchors, highlights and links
1051: #
1052: sub afterburn {
1053: my $result=shift;
1.154 albertel 1054: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
1055: ['highlight','anchor','link']);
1.66 www 1056: if ($ENV{'form.highlight'}) {
1.142 albertel 1057: foreach (split(/\,/,$ENV{'form.highlight'})) {
1.66 www 1058: my $anchorname=$_;
1059: my $matchthis=$anchorname;
1060: $matchthis=~s/\_+/\\s\+/g;
1061: $result=~s/($matchthis)/\<font color=\"red\"\>$1\<\/font\>/gs;
1.142 albertel 1062: }
1.66 www 1063: }
1064: if ($ENV{'form.link'}) {
1.142 albertel 1065: foreach (split(/\,/,$ENV{'form.link'})) {
1.66 www 1066: my ($anchorname,$linkurl)=split(/\>/,$_);
1067: my $matchthis=$anchorname;
1068: $matchthis=~s/\_+/\\s\+/g;
1069: $result=~s/($matchthis)/\<a href=\"$linkurl\"\>$1\<\/a\>/gs;
1.142 albertel 1070: }
1.66 www 1071: }
1072: if ($ENV{'form.anchor'}) {
1073: my $anchorname=$ENV{'form.anchor'};
1074: my $matchthis=$anchorname;
1075: $matchthis=~s/\_+/\\s\+/g;
1076: $result=~s/($matchthis)/\<a name=\"$anchorname\"\>$1\<\/a\>/s;
1077: $result.=(<<"ENDSCRIPT");
1078: <script>
1079: document.location.hash='$anchorname';
1080: </script>
1081: ENDSCRIPT
1082: }
1083: return $result;
1084: }
1085:
1.79 www 1086: sub storefile {
1087: my ($file,$contents)=@_;
1088: if (my $fh=Apache::File->new('>'.$file)) {
1089: print $fh $contents;
1090: $fh->close();
1.147 albertel 1091: } else {
1092: &warning("Unable to save file $file");
1.79 www 1093: }
1094: }
1095:
1.151 albertel 1096: sub createnewhtml {
1097: my $filecontents=(<<SIMPLECONTENT);
1.78 www 1098: <html>
1099: <head>
1100: <title>
1101: Title of Document Goes Here
1102: </title>
1103: </head>
1104: <body bgcolor="#FFFFFF">
1105:
1106: Body of Document Goes Here
1107:
1108: </body>
1109: </html>
1110: SIMPLECONTENT
1.151 albertel 1111: return $filecontents;
1112: }
1113:
1.147 albertel 1114:
1.151 albertel 1115: sub inserteditinfo {
1116: my ($result,$filecontents)=@_;
1.157 albertel 1117: $filecontents = &HTML::Entities::encode($filecontents);
1.147 albertel 1118: # my $editheader='<a href="#editsection">Edit below</a><hr />';
1.161 albertel 1119: my $buttons=(<<BUTTONS);
1120: <input type="submit" name="attemptclean"
1121: value="Save and then attempt to clean HTML" />
1122: <input type="submit" name="savethisfile" value="Save this" />
1123: <input type="submit" name="viewmode" value="View" />
1124: BUTTONS
1.78 www 1125: my $editfooter=(<<ENDFOOTER);
1126: <hr />
1127: <a name="editsection" />
1128: <form method="post">
1.161 albertel 1129: <input type="hidden" name="editmode" value="Edit" />
1130: $buttons
1.78 www 1131: <textarea cols="80" rows="40" name="filecont">$filecontents</textarea>
1.161 albertel 1132: $buttons
1.78 www 1133: <br />
1134: </form>
1135: ENDFOOTER
1.147 albertel 1136: # $result=~s/(\<body[^\>]*\>)/$1$editheader/is;
1.78 www 1137: $result=~s/(\<\/body\>)/$editfooter/is;
1138: return $result;
1139: }
1140:
1.152 albertel 1141: sub get_target {
1142: my $viewgrades=&Apache::lonnet::allowed('vgr',$ENV{'request.course.id'});
1143: if ( $ENV{'request.state'} eq 'published') {
1144: if ( defined($ENV{'form.grade_target'})
1145: && ($viewgrades == 'F' )) {
1146: return ($ENV{'form.grade_target'});
1.153 albertel 1147: } elsif (defined($ENV{'form.grade_target'})) {
1148: if (($ENV{'form.grade_target'} eq 'web') ||
1149: ($ENV{'form.grade_target'} eq 'tex') ) {
1150: return $ENV{'form.grade_target'}
1151: } else {
1152: return 'web';
1153: }
1.152 albertel 1154: } else {
1155: return 'web';
1156: }
1157: } elsif ($ENV{'request.state'} eq 'construct') {
1158: if ( defined($ENV{'form.grade_target'})) {
1159: return ($ENV{'form.grade_target'});
1160: } else {
1161: return 'web';
1162: }
1163: } else {
1164: return 'web';
1165: }
1166: }
1167:
1.24 sakharuk 1168: sub handler {
1169: my $request=shift;
1.68 www 1170:
1.152 albertel 1171: my $target=&get_target();
1.68 www 1172:
1.65 albertel 1173: $Apache::lonxml::debug=0;
1.68 www 1174:
1.25 sakharuk 1175: if ($ENV{'browser.mathml'}) {
1.27 albertel 1176: $request->content_type('text/xml');
1177: } else {
1178: $request->content_type('text/html');
1.25 sakharuk 1179: }
1.141 albertel 1180: &Apache::loncommon::no_cache($request);
1.27 albertel 1181: $request->send_http_header;
1.141 albertel 1182:
1.45 www 1183: return OK if $request->header_only;
1.27 albertel 1184:
1.79 www 1185:
1186: my $file=&Apache::lonnet::filelocation("",$request->uri);
1.78 www 1187: #
1188: # Edit action? Save file.
1189: #
1190: unless ($ENV{'request.state'} eq 'published') {
1.107 www 1191: if (($ENV{'form.savethisfile'}) || ($ENV{'form.attemptclean'})) {
1.79 www 1192: &storefile($file,$ENV{'form.filecont'});
1.78 www 1193: }
1194: }
1.24 sakharuk 1195: my %mystyle;
1.147 albertel 1196: my $result = '';
1.50 albertel 1197: my $filecontents=&Apache::lonnet::getfile($file);
1198: if ($filecontents == -1) {
1.78 www 1199: $result=(<<ENDNOTFOUND);
1200: <html>
1201: <head>
1202: <title>File not found</title>
1203: </head>
1204: <body bgcolor="#FFFFFF">
1205: <b>File not found: $file</b>
1206: </body>
1207: </html>
1208: ENDNOTFOUND
1.50 albertel 1209: $filecontents='';
1.151 albertel 1210: if ($ENV{'request.state'} ne 'published') {
1211: $filecontents=&createnewhtml();
1.161 albertel 1212: $ENV{'form.editmode'}='Edit'; #force edit mode
1.151 albertel 1213: }
1.50 albertel 1214: } else {
1.147 albertel 1215: unless ($ENV{'request.state'} eq 'published') {
1216: if ($ENV{'form.attemptclean'}) {
1217: $filecontents=&htmlclean($filecontents,1);
1.107 www 1218: }
1.147 albertel 1219: }
1.161 albertel 1220: if (!$ENV{'form.editmode'} || $ENV{'form.viewmode'}) {
1.147 albertel 1221: $result = &Apache::lonxml::xmlparse($target,$filecontents,'',%mystyle);
1222: }
1.78 www 1223: }
1224:
1225: #
1226: # Edit action? Insert editing commands
1227: #
1228: unless ($ENV{'request.state'} eq 'published') {
1.161 albertel 1229: if ($ENV{'form.editmode'} && (!($ENV{'form.viewmode'}))) {
1.147 albertel 1230: $result='<html><body bgcolor="#FFFFFF"></body></html>';
1.78 www 1231: $result=&inserteditinfo($result,$filecontents);
1.147 albertel 1232: }
1.66 www 1233: }
1.147 albertel 1234:
1.126 www 1235: writeallows($request->uri);
1.50 albertel 1236:
1.67 www 1237: $request->print($result);
1.64 albertel 1238:
1.45 www 1239: return OK;
1.24 sakharuk 1240: }
1.147 albertel 1241:
1.22 albertel 1242: sub debug {
1243: if ($Apache::lonxml::debug eq 1) {
1.146 albertel 1244: $|=1;
1245: print("DEBUG:".join('<br />',@_)."<br />\n");
1.22 albertel 1246: }
1247: }
1.49 albertel 1248:
1.22 albertel 1249: sub error {
1.74 albertel 1250: if (($Apache::lonxml::debug eq 1) || ($ENV{'request.state'} eq 'construct') ) {
1.146 albertel 1251: print "<b>ERROR:</b>".join('<br />',@_)."<br />\n";
1.52 albertel 1252: } else {
1253: print "<b>An Error occured while processing this resource. The instructor has been notified.</b> <br />";
1254: #notify author
1.146 albertel 1255: &Apache::lonmsg::author_res_msg($ENV{'request.filename'},join('<br />',@_));
1.52 albertel 1256: #notify course
1257: if ( $ENV{'request.course.id'} ) {
1258: my $users=$ENV{'course.'.$ENV{'request.course.id'}.'.comment.email'};
1.143 www 1259: my $declutter=&Apache::lonnet::declutter($ENV{'request.filename'});
1.52 albertel 1260: foreach my $user (split /\,/, $users) {
1261: ($user,my $domain) = split /:/, $user;
1.143 www 1262: &Apache::lonmsg::user_normal_msg($user,$domain,
1.146 albertel 1263: "Error [$declutter]",join('<br />',@_));
1.52 albertel 1264: }
1265: }
1.74 albertel 1266:
1.52 albertel 1267: #FIXME probably shouldn't have me get everything forever.
1.146 albertel 1268: &Apache::lonmsg::user_normal_msg('albertel','msu',"Error in $ENV{'request.filename'}",join('<br />',@_));
1.74 albertel 1269: #&Apache::lonmsg::user_normal_msg('albertel','103',"Error in $ENV{'request.filename'}",$_[0]);
1.52 albertel 1270: }
1.22 albertel 1271: }
1.49 albertel 1272:
1.22 albertel 1273: sub warning {
1.73 harris41 1274: if ($ENV{'request.state'} eq 'construct') {
1.146 albertel 1275: print "<b>W</b>ARNING<b>:</b>".join('<br />',@_)."<br />\n";
1.73 harris41 1276: }
1.83 albertel 1277: }
1278:
1279: sub get_param {
1280: my ($param,$parstack,$safeeval,$context) = @_;
1281: if ( ! $context ) { $context = -1; }
1282: my $args ='';
1283: if ( $#$parstack > (-2-$context) ) { $args=$$parstack[$context]; }
1.157 albertel 1284: if ( ! $args ) { return undef; }
1.131 albertel 1285: if ( $args =~ /my \$$param=\"/ ) {
1286: return &Apache::run::run("{$args;".'return $'.$param.'}',$safeeval); #'
1287: } else {
1288: return undef;
1289: }
1.22 albertel 1290: }
1291:
1.132 albertel 1292: sub get_param_var {
1293: my ($param,$parstack,$safeeval,$context) = @_;
1294: if ( ! $context ) { $context = -1; }
1295: my $args ='';
1296: if ( $#$parstack > (-2-$context) ) { $args=$$parstack[$context]; }
1297: if ( $args !~ /my \$$param=\"/ ) { return undef; }
1298: my $value=&Apache::run::run("{$args;".'return $'.$param.'}',$safeeval); #'
1299: if ($value =~ /^[\$\@\%]/) {
1300: return &Apache::run::run("return $value",$safeeval,1);
1301: } else {
1302: return $value;
1303: }
1304: }
1305:
1.74 albertel 1306: sub register_insert {
1.75 albertel 1307: my @data = split /\n/, &Apache::lonnet::getfile('/home/httpd/lonTabs/insertlist.tab');
1.74 albertel 1308: my $i;
1.76 albertel 1309: my $tagnum=0;
1.74 albertel 1310: my @order;
1311: for ($i=0;$i < $#data; $i++) {
1312: my $line = $data[$i];
1313: if ( $line =~ /^\#/ || $line =~ /^\s*\n/) { next; }
1314: if ( $line =~ /TABLE/ ) { last; }
1.92 albertel 1315: my ($tag,$descrip,$color,$function,$show) = split(/,/, $line);
1.135 albertel 1316: if ($tag) {
1317: $insertlist{"$tagnum.tag"} = $tag;
1318: $insertlist{"$tagnum.description"} = $descrip;
1319: $insertlist{"$tagnum.color"} = $color;
1320: $insertlist{"$tagnum.function"} = $function;
1321: if (!defined($show)) { $show='yes'; }
1322: $insertlist{"$tagnum.show"}= $show;
1323: $insertlist{"$tag.num"}=$tagnum;
1324: $tagnum++;
1325: }
1.74 albertel 1326: }
1.76 albertel 1327: $i++; #skipping TABLE line
1328: $tagnum = 0;
1.74 albertel 1329: for (;$i < $#data;$i++) {
1330: my $line = $data[$i];
1.76 albertel 1331: my ($mnemonic,@which) = split(/ +/,$line);
1332: my $tag = $insertlist{"$tagnum.tag"};
1.144 matthew 1333: for (my $j=0;$j <=$#which;$j++) {
1.74 albertel 1334: if ( $which[$j] eq 'Y' ) {
1.76 albertel 1335: if ($insertlist{"$j.show"} ne 'no') {
1336: push(@{ $insertlist{"$tag.which"} },$j);
1337: }
1.74 albertel 1338: }
1339: }
1.76 albertel 1340: $tagnum++;
1.74 albertel 1341: }
1342: }
1.98 albertel 1343:
1344: sub description {
1345: my ($token)=@_;
1.138 albertel 1346: my $tagnum;
1347: my $tag=$token->[1];
1348: foreach my $namespace (reverse @Apache::lonxml::namespace) {
1349: my $testtag=$namespace.'::'.$tag;
1350: $tagnum=$insertlist{"$testtag.num"};
1351: if (defined($tagnum)) { last; }
1352: }
1353: if (!defined ($tagnum)) { $tagnum=$Apache::lonxml::insertlist{"$tag.num"}; }
1354: return $insertlist{$tagnum.'.description'};
1.98 albertel 1355: }
1.123 albertel 1356:
1357: # ----------------------------------------------------------------- whichuser
1358: # returns a list of $symb, $courseid, $domain, $name that is correct for
1359: # calls to lonnet functions for this setup.
1360: # - looks for form.grade_ parameters
1361: sub whichuser {
1.134 albertel 1362: my ($symb,$courseid,$domain,$name);
1.123 albertel 1363: if (defined($ENV{'form.grade_symb'})) {
1364: my $tmp_courseid=$ENV{'form.grade_courseid'};
1365: my $allowed=&Apache::lonnet::allowed('mgr',$tmp_courseid);
1366: if ($allowed) {
1367: $symb=$ENV{'form.grade_symb'};
1368: $courseid=$ENV{'form.grade_courseid'};
1369: $domain=$ENV{'form.grade_domain'};
1370: $name=$ENV{'form.grade_username'};
1371: }
1.134 albertel 1372: } else {
1373: $symb=&Apache::lonnet::symbread();
1374: $courseid=$ENV{'request.course.id'};
1375: $domain=$ENV{'user.domain'};
1376: $name=$ENV{'user.name'};
1.123 albertel 1377: }
1378: return ($symb,$courseid,$domain,$name);
1379: }
1380:
1.1 sakharuk 1381: 1;
1382: __END__
1.68 www 1383:
1384:
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