Annotation of loncom/xml/lonxml.pm, revision 1.179
1.2 sakharuk 1: # The LearningOnline Network with CAPA
1.3 sakharuk 2: # XML Parser Module
1.2 sakharuk 3: #
1.179 ! matthew 4: # $Id: lonxml.pm,v 1.178 2002/06/15 18:59:26 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);'; }
1.174 www 349: my $timesync='menu.clock.setTime(1000*'.time.');';
1.100 www 350: if (($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 = $$pars['-1']->get_token) {
547: if (($token->[0] eq 'T') || ($token->[0] eq 'C') || ($token->[0] eq 'D') ) {
548: if ($metamode<1) {
549: $result=$token->[1];
550: }
551: } elsif ($token->[0] eq 'PI') {
552: if ($metamode<1) {
553: $result=$token->[2];
554: }
555: } elsif ($token->[0] eq 'S') {
1.140 albertel 556: # add tag to stack
1.101 albertel 557: push (@$stack,$token->[1]);
558: # add parameters list to another stack
559: push (@$parstack,&parstring($token));
1.140 albertel 560: &increasedepth($token);
1.101 albertel 561: if (exists $$style_for_target{$token->[1]}) {
562: if ($Apache::lonxml::redirection) {
1.140 albertel 563: $Apache::lonxml::outputstack['-1'] .=
1.101 albertel 564: &recurse($$style_for_target{$token->[1]},$target,$safeeval,
565: $style_for_target,@$parstack);
566: } else {
567: $finaloutput .= &recurse($$style_for_target{$token->[1]},$target,
568: $safeeval,$style_for_target,@$parstack);
569: }
570: } else {
571: $result = &callsub("start_$token->[1]", $target, $token, $stack,
572: $parstack, $pars, $safeeval, $style_for_target);
1.140 albertel 573: }
1.101 albertel 574: } elsif ($token->[0] eq 'E') {
575: #clear out any tags that didn't end
576: while ($token->[1] ne $$stack['-1'] && ($#$stack > -1)) {
1.150 albertel 577: my $lasttag=$$stack[-1];
578: if ($token->[1] =~ /^$lasttag$/i) {
579: &Apache::lonxml::warning('Using tag </'.$token->[1].'> as end tag to <'.$$stack[-1].'>');
580: last;
581: } else {
1.152 albertel 582: &Apache::lonxml::warning('Found tag </'.$token->[1].'> when looking for </'.$$stack[-1].'> in file');
1.150 albertel 583: &end_tag($stack,$parstack,$token);
584: }
1.101 albertel 585: }
1.140 albertel 586:
587: if (exists($$style_for_target{'/'."$token->[1]"})) {
1.101 albertel 588: if ($Apache::lonxml::redirection) {
589: $Apache::lonxml::outputstack['-1'] .=
590: &recurse($$style_for_target{'/'."$token->[1]"},
591: $target,$safeeval,$style_for_target,@$parstack);
592: } else {
593: $finaloutput .= &recurse($$style_for_target{'/'."$token->[1]"},
594: $target,$safeeval,$style_for_target,
595: @$parstack);
596: }
597: } else {
598: $result = &callsub("end_$token->[1]", $target, $token, $stack,
599: $parstack, $pars,$safeeval, $style_for_target);
600: }
601: } else {
602: &Apache::lonxml::error("Unknown token event :$token->[0]:$token->[1]:");
603: }
604: #evaluate variable refs in result
605: if ($result ne "") {
606: if ( $#$parstack > -1 ) {
1.169 albertel 607: $result=&Apache::run::evaluate($result,$safeeval,$$parstack[-1]);
1.101 albertel 608: } else {
1.169 albertel 609: $result= &Apache::run::evaluate($result,$safeeval,'');
1.101 albertel 610: }
1.163 albertel 611: }
1.169 albertel 612: # Encode any high ASCII characters
613: if (!$Apache::lonxml::prevent_entity_encode) {
614: $result=&HTML::Entities::encode($result,"\200-\377");
615: }
616: if ($Apache::lonxml::redirection) {
617: $Apache::lonxml::outputstack['-1'] .= $result;
618: } else {
619: $finaloutput.=$result;
620: }
621: $result = '';
622:
1.101 albertel 623: if ($token->[0] eq 'E') {
624: &end_tag($stack,$parstack,$token);
625: }
626: }
627: pop @$pars;
628: pop @Apache::lonxml::pwd;
629: }
630:
631: # if ($target eq 'meta') {
632: # $finaloutput.=&endredirection;
633: # }
634:
1.169 albertel 635:
1.101 albertel 636: if (($ENV{'QUERY_STRING'}) && ($target eq 'web')) {
637: $finaloutput=&afterburn($finaloutput);
638: }
639: return $finaloutput;
640: }
1.67 www 641:
1.15 albertel 642: sub recurse {
643: my @innerstack = ();
644: my @innerparstack = ();
645: my ($newarg,$target,$safeeval,$style_for_target,@parstack) = @_;
1.16 albertel 646: my @pat = ();
1.23 albertel 647: &newparser(\@pat,\$newarg);
1.15 albertel 648: my $tokenpat;
649: my $partstring = '';
650: my $output='';
1.16 albertel 651: my $decls='';
1.140 albertel 652: &Apache::lonxml::debug("Recursing");
1.16 albertel 653: while ( $#pat > -1 ) {
654: while ($tokenpat = $pat[$#pat]->get_token) {
1.57 albertel 655: if (($tokenpat->[0] eq 'T') || ($tokenpat->[0] eq 'C') || ($tokenpat->[0] eq 'D') ) {
1.61 albertel 656: if ($metamode<1) { $partstring=$tokenpat->[1]; }
1.57 albertel 657: } elsif ($tokenpat->[0] eq 'PI') {
1.61 albertel 658: if ($metamode<1) { $partstring=$tokenpat->[2]; }
1.16 albertel 659: } elsif ($tokenpat->[0] eq 'S') {
660: push (@innerstack,$tokenpat->[1]);
661: push (@innerparstack,&parstring($tokenpat));
1.19 albertel 662: &increasedepth($tokenpat);
1.84 albertel 663: $partstring = &callsub("start_$tokenpat->[1]", $target, $tokenpat,
664: \@innerstack, \@innerparstack, \@pat,
665: $safeeval, $style_for_target);
1.16 albertel 666: } elsif ($tokenpat->[0] eq 'E') {
667: #clear out any tags that didn't end
1.150 albertel 668: while ($tokenpat->[1] ne $innerstack[$#innerstack]
1.43 albertel 669: && ($#innerstack > -1)) {
1.150 albertel 670: my $lasttag=$innerstack[-1];
671: if ($tokenpat->[1] =~ /^$lasttag$/i) {
672: &Apache::lonxml::warning('Using tag </'.$tokenpat->[1].'> as end tag to <'.$innerstack[-1].'>');
673: last;
674: } else {
1.152 albertel 675: &Apache::lonxml::warning('Found tag </'.$tokenpat->[1].'> when looking for </'.$innerstack[-1].'> in file');
1.150 albertel 676: &end_tag(\@innerstack,\@innerparstack,$tokenpat);
677: }
1.43 albertel 678: }
1.84 albertel 679: $partstring = &callsub("end_$tokenpat->[1]", $target, $tokenpat,
680: \@innerstack, \@innerparstack, \@pat,
681: $safeeval, $style_for_target);
1.57 albertel 682: } else {
683: &Apache::lonxml::error("Unknown token event :$tokenpat->[0]:$tokenpat->[1]:");
1.16 albertel 684: }
685: #pass both the variable to the style tag, and the tag we
686: #are processing inside the <definedtag>
687: if ( $partstring ne "" ) {
688: if ( $#parstack > -1 ) {
689: if ( $#innerparstack > -1 ) {
690: $decls= $parstack[$#parstack].$innerparstack[$#innerparstack];
691: } else {
692: $decls= $parstack[$#parstack];
693: }
694: } else {
695: if ( $#innerparstack > -1 ) {
696: $decls=$innerparstack[$#innerparstack];
697: } else {
698: $decls='';
699: }
700: }
701: $output .= &Apache::run::evaluate($partstring,$safeeval,$decls);
702: $partstring = '';
703: }
1.17 albertel 704: if ($tokenpat->[0] eq 'E') { pop @innerstack;pop @innerparstack;
1.19 albertel 705: &decreasedepth($tokenpat);}
1.15 albertel 706: }
1.16 albertel 707: pop @pat;
1.23 albertel 708: pop @Apache::lonxml::pwd;
1.15 albertel 709: }
1.140 albertel 710: &Apache::lonxml::debug("Exiting Recursing");
1.15 albertel 711: return $output;
1.7 albertel 712: }
713:
714: sub callsub {
1.84 albertel 715: my ($sub,$target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.7 albertel 716: my $currentstring='';
1.72 albertel 717: my $nodefault;
1.7 albertel 718: {
1.59 albertel 719: my $sub1;
1.7 albertel 720: no strict 'refs';
1.68 www 721: my $tag=$token->[1];
1.141 albertel 722: my $space=$Apache::lonxml::alltags{$tag}[-1];
1.68 www 723: if (!$space) {
1.141 albertel 724: $tag=~tr/A-Z/a-z/;
1.68 www 725: $sub=~tr/A-Z/a-z/;
1.141 albertel 726: $space=$Apache::lonxml::alltags{$tag}[-1]
1.68 www 727: }
1.97 albertel 728:
729: my $deleted=0;
730: $Apache::lonxml::curdepth=join('_',@Apache::lonxml::depthcounter);
731: if (($token->[0] eq 'S') && ($target eq 'modified')) {
732: $deleted=&Apache::edit::handle_delete($space,$target,$token,$tagstack,
733: $parstack,$parser,$safeeval,
734: $style);
735: }
736: if (!$deleted) {
737: if ($space) {
1.152 albertel 738: #&Apache::lonxml::debug("Calling sub $sub in $space $metamode");
1.97 albertel 739: $sub1="$space\:\:$sub";
740: ($currentstring,$nodefault) = &$sub1($target,$token,$tagstack,
741: $parstack,$parser,$safeeval,
742: $style);
743: } else {
1.152 albertel 744: #&Apache::lonxml::debug("NOT Calling sub $sub in $space $metamode");
1.97 albertel 745: if ($metamode <1) {
746: if (defined($token->[4]) && ($metamode < 1)) {
747: $currentstring = $token->[4];
748: } else {
749: $currentstring = $token->[2];
750: }
1.62 sakharuk 751: }
1.7 albertel 752: }
1.97 albertel 753: # &Apache::lonxml::debug("nodefalt:$nodefault:");
754: if ($currentstring eq '' && $nodefault eq '') {
755: if ($target eq 'edit') {
756: &Apache::lonxml::debug("doing default edit for $token->[1]");
757: if ($token->[0] eq 'S') {
758: $currentstring = &Apache::edit::tag_start($target,$token);
759: } elsif ($token->[0] eq 'E') {
760: $currentstring = &Apache::edit::tag_end($target,$token);
761: }
762: } elsif ($target eq 'modified') {
763: if ($token->[0] eq 'S') {
764: $currentstring = $token->[4];
765: $currentstring.=&Apache::edit::handle_insert();
766: } else {
767: $currentstring = $token->[2];
768: }
1.72 albertel 769: }
770: }
1.7 albertel 771: }
772: use strict 'refs';
773: }
774: return $currentstring;
1.82 ng 775: }
776:
1.96 albertel 777: sub setup_globals {
1.172 albertel 778: my ($request,$target)=@_;
779: $Apache::lonxml::request=$request;
1.99 albertel 780: $Apache::lonxml::registered = 0;
1.101 albertel 781: @Apache::lonxml::pwd=();
1.124 albertel 782: @Apache::lonxml::extlinks=();
1.96 albertel 783: if ($target eq 'meta') {
784: $Apache::lonxml::redirection = 0;
785: $Apache::lonxml::metamode = 1;
786: $Apache::lonxml::evaluate = 1;
787: $Apache::lonxml::import = 0;
1.129 albertel 788: } elsif ($target eq 'answer') {
789: $Apache::lonxml::redirection = 0;
790: $Apache::lonxml::metamode = 1;
791: $Apache::lonxml::evaluate = 1;
792: $Apache::lonxml::import = 1;
1.96 albertel 793: } elsif ($target eq 'grade') {
794: &startredirection;
795: $Apache::lonxml::metamode = 0;
796: $Apache::lonxml::evaluate = 1;
797: $Apache::lonxml::import = 1;
798: } elsif ($target eq 'modified') {
799: $Apache::lonxml::redirection = 0;
800: $Apache::lonxml::metamode = 0;
801: $Apache::lonxml::evaluate = 0;
802: $Apache::lonxml::import = 0;
803: } elsif ($target eq 'edit') {
804: $Apache::lonxml::redirection = 0;
805: $Apache::lonxml::metamode = 0;
806: $Apache::lonxml::evaluate = 0;
807: $Apache::lonxml::import = 0;
1.163 albertel 808: } elsif ($target eq 'analyze') {
809: $Apache::lonxml::redirection = 0;
810: $Apache::lonxml::metamode = 0;
811: $Apache::lonxml::evaluate = 1;
812: $Apache::lonxml::import = 1;
1.96 albertel 813: } else {
814: $Apache::lonxml::redirection = 0;
815: $Apache::lonxml::metamode = 0;
816: $Apache::lonxml::evaluate = 1;
817: $Apache::lonxml::import = 1;
818: }
819: }
820:
1.82 ng 821: sub init_safespace {
822: my ($target,$safeeval,$safehole,$safeinit) = @_;
823: $safeeval->permit("entereval");
824: $safeeval->permit(":base_math");
825: $safeeval->permit("sort");
826: $safeeval->deny(":base_io");
1.102 albertel 827: $safehole->wrap(\&Apache::scripttag::xmlparse,$safeeval,'&xmlparse');
1.82 ng 828: $safehole->wrap(\&Apache::lonnet::EXT,$safeeval,'&EXT');
829:
830: $safehole->wrap(\&Math::Cephes::asin,$safeeval,'&asin');
831: $safehole->wrap(\&Math::Cephes::acos,$safeeval,'&acos');
832: $safehole->wrap(\&Math::Cephes::atan,$safeeval,'&atan');
833: $safehole->wrap(\&Math::Cephes::sinh,$safeeval,'&sinh');
834: $safehole->wrap(\&Math::Cephes::cosh,$safeeval,'&cosh');
835: $safehole->wrap(\&Math::Cephes::tanh,$safeeval,'&tanh');
836: $safehole->wrap(\&Math::Cephes::asinh,$safeeval,'&asinh');
837: $safehole->wrap(\&Math::Cephes::acosh,$safeeval,'&acosh');
838: $safehole->wrap(\&Math::Cephes::atanh,$safeeval,'&atanh');
839: $safehole->wrap(\&Math::Cephes::erf,$safeeval,'&erf');
840: $safehole->wrap(\&Math::Cephes::erfc,$safeeval,'&erfc');
841: $safehole->wrap(\&Math::Cephes::j0,$safeeval,'&j0');
842: $safehole->wrap(\&Math::Cephes::j1,$safeeval,'&j1');
843: $safehole->wrap(\&Math::Cephes::jn,$safeeval,'&jn');
844: $safehole->wrap(\&Math::Cephes::jv,$safeeval,'&jv');
845: $safehole->wrap(\&Math::Cephes::y0,$safeeval,'&y0');
846: $safehole->wrap(\&Math::Cephes::y1,$safeeval,'&y1');
847: $safehole->wrap(\&Math::Cephes::yn,$safeeval,'&yn');
848: $safehole->wrap(\&Math::Cephes::yv,$safeeval,'&yv');
1.91 ng 849: $safehole->wrap(\&Math::Random::random_beta,$safeeval,'&math_random_beta');
850: $safehole->wrap(\&Math::Random::random_chi_square,$safeeval,'&math_random_chi_square');
851: $safehole->wrap(\&Math::Random::random_exponential,$safeeval,'&math_random_exponential');
852: $safehole->wrap(\&Math::Random::random_f,$safeeval,'&math_random_f');
853: $safehole->wrap(\&Math::Random::random_gamma,$safeeval,'&math_random_gamma');
854: $safehole->wrap(\&Math::Random::random_multivariate_normal,$safeeval,'&math_random_multivariate_normal');
855: $safehole->wrap(\&Math::Random::random_multinomial,$safeeval,'&math_random_multinomial');
856: $safehole->wrap(\&Math::Random::random_noncentral_chi_square,$safeeval,'&math_random_noncentral_chi_square');
857: $safehole->wrap(\&Math::Random::random_noncentral_f,$safeeval,'&math_random_noncentral_f');
858: $safehole->wrap(\&Math::Random::random_normal,$safeeval,'&math_random_normal');
859: $safehole->wrap(\&Math::Random::random_permutation,$safeeval,'&math_random_permutation');
1.93 ng 860: $safehole->wrap(\&Math::Random::random_permuted_index,$safeeval,'&math_random_permuted_index');
1.91 ng 861: $safehole->wrap(\&Math::Random::random_uniform,$safeeval,'&math_random_uniform');
862: $safehole->wrap(\&Math::Random::random_poisson,$safeeval,'&math_random_poisson');
863: $safehole->wrap(\&Math::Random::random_uniform_integer,$safeeval,'&math_random_uniform_integer');
864: $safehole->wrap(\&Math::Random::random_negative_binomial,$safeeval,'&math_random_negative_binomial');
865: $safehole->wrap(\&Math::Random::random_binomial,$safeeval,'&math_random_binomial');
866: $safehole->wrap(\&Math::Random::random_seed_from_phrase,$safeeval,'&random_seed_from_phrase');
867: $safehole->wrap(\&Math::Random::random_set_seed_from_phrase,$safeeval,'&random_set_seed_from_phrase');
868: $safehole->wrap(\&Math::Random::random_get_seed,$safeeval,'&random_get_seed');
869: $safehole->wrap(\&Math::Random::random_set_seed,$safeeval,'&random_set_seed');
870:
1.82 ng 871: #need to inspect this class of ops
872: # $safeeval->deny(":base_orig");
1.91 ng 873: $safeinit .= ';$external::target="'.$target.'";';
1.121 albertel 874: my $rndseed;
1.123 albertel 875: my ($symb,$courseid,$domain,$name) = &Apache::lonxml::whichuser();
876: $rndseed=&Apache::lonnet::rndseed($symb,$courseid,$domain,$name);
1.121 albertel 877: $safeinit .= ';$external::randomseed='.$rndseed.';';
1.82 ng 878: &Apache::run::run($safeinit,$safeeval);
1.17 albertel 879: }
880:
1.55 albertel 881: sub startredirection {
882: $Apache::lonxml::redirection++;
883: push (@Apache::lonxml::outputstack, '');
884: }
885:
886: sub endredirection {
887: if (!$Apache::lonxml::redirection) {
1.72 albertel 888: &Apache::lonxml::error("Endredirection was called, before a startredirection, perhaps you have unbalanced tags. Some debuging information:".join ":",caller);
1.55 albertel 889: return '';
890: }
891: $Apache::lonxml::redirection--;
892: pop @Apache::lonxml::outputstack;
1.97 albertel 893: }
894:
895: sub end_tag {
896: my ($tagstack,$parstack,$token)=@_;
897: pop(@$tagstack);
898: pop(@$parstack);
899: &decreasedepth($token);
1.55 albertel 900: }
901:
1.17 albertel 902: sub initdepth {
903: @Apache::lonxml::depthcounter=();
904: $Apache::lonxml::depth=-1;
905: $Apache::lonxml::olddepth=-1;
906: }
907:
908: sub increasedepth {
1.19 albertel 909: my ($token) = @_;
1.17 albertel 910: $Apache::lonxml::depth++;
911: $Apache::lonxml::depthcounter[$Apache::lonxml::depth]++;
912: if ($Apache::lonxml::depthcounter[$Apache::lonxml::depth]==1) {
913: $Apache::lonxml::olddepth=$Apache::lonxml::depth;
914: }
1.42 albertel 915: my $curdepth=join('_',@Apache::lonxml::depthcounter);
1.64 albertel 916: &Apache::lonxml::debug("s $Apache::lonxml::depth : $Apache::lonxml::olddepth : $curdepth : $token->[1]\n");
1.54 albertel 917: #print "<br />s $Apache::lonxml::depth : $Apache::lonxml::olddepth : $curdepth : $token->[1]\n";
1.17 albertel 918: }
919:
920: sub decreasedepth {
1.19 albertel 921: my ($token) = @_;
1.17 albertel 922: $Apache::lonxml::depth--;
1.36 albertel 923: if ($Apache::lonxml::depth<$Apache::lonxml::olddepth-1) {
924: $#Apache::lonxml::depthcounter--;
925: $Apache::lonxml::olddepth=$Apache::lonxml::depth+1;
926: }
1.43 albertel 927: if ( $Apache::lonxml::depth < -1) {
1.140 albertel 928: &Apache::lonxml::warning("Missing tags, unable to properly run file.");
1.43 albertel 929: $Apache::lonxml::depth='-1';
930: }
1.42 albertel 931: my $curdepth=join('_',@Apache::lonxml::depthcounter);
1.64 albertel 932: &Apache::lonxml::debug("e $Apache::lonxml::depth : $Apache::lonxml::olddepth : $token->[1] : $curdepth\n");
1.54 albertel 933: #print "<br />e $Apache::lonxml::depth : $Apache::lonxml::olddepth : $token->[1] : $curdepth\n";
1.1 sakharuk 934: }
1.19 albertel 935:
936: sub get_all_text {
937:
938: my($tag,$pars)= @_;
939: my $depth=0;
940: my $token;
941: my $result='';
1.57 albertel 942: if ( $tag =~ m:^/: ) {
943: my $tag=substr($tag,1);
944: # &Apache::lonxml::debug("have:$tag:");
945: while (($depth >=0) && ($token = $pars->get_token)) {
946: # &Apache::lonxml::debug("e token:$token->[0]:$depth:$token->[1]");
947: if (($token->[0] eq 'T')||($token->[0] eq 'C')||($token->[0] eq 'D')) {
948: $result.=$token->[1];
949: } elsif ($token->[0] eq 'PI') {
950: $result.=$token->[2];
951: } elsif ($token->[0] eq 'S') {
1.151 albertel 952: if ($token->[1] =~ /^$tag$/i) { $depth++; }
1.57 albertel 953: $result.=$token->[4];
954: } elsif ($token->[0] eq 'E') {
1.151 albertel 955: if ( $token->[1] =~ /^$tag$/i) { $depth--; }
1.57 albertel 956: #skip sending back the last end tag
957: if ($depth > -1) { $result.=$token->[2]; } else {
958: $pars->unget_token($token);
959: }
960: }
961: }
962: } else {
963: while ($token = $pars->get_token) {
964: # &Apache::lonxml::debug("s token:$token->[0]:$depth:$token->[1]");
965: if (($token->[0] eq 'T')||($token->[0] eq 'C')||($token->[0] eq 'D')) {
966: $result.=$token->[1];
967: } elsif ($token->[0] eq 'PI') {
968: $result.=$token->[2];
969: } elsif ($token->[0] eq 'S') {
1.151 albertel 970: if ( $token->[1] =~ /^$tag$/i) {
1.57 albertel 971: $pars->unget_token($token); last;
972: } else {
973: $result.=$token->[4];
974: }
975: } elsif ($token->[0] eq 'E') {
976: $result.=$token->[2];
1.36 albertel 977: }
1.19 albertel 978: }
979: }
1.49 albertel 980: # &Apache::lonxml::debug("Exit:$result:");
1.19 albertel 981: return $result
982: }
983:
1.23 albertel 984: sub newparser {
985: my ($parser,$contentref,$dir) = @_;
1.167 albertel 986: push (@$parser,HTML::LCParser->new($contentref));
1.56 albertel 987: $$parser['-1']->xml_mode('1');
1.23 albertel 988: if ( $dir eq '' ) {
989: push (@Apache::lonxml::pwd, $Apache::lonxml::pwd[$#Apache::lonxml::pwd]);
990: } else {
991: push (@Apache::lonxml::pwd, $dir);
992: }
993: # &Apache::lonxml::debug("pwd:$#Apache::lonxml::pwd");
994: # &Apache::lonxml::debug("pwd:$Apache::lonxml::pwd[$#Apache::lonxml::pwd]");
995: }
1.1 sakharuk 996:
1.8 albertel 997: sub parstring {
998: my ($token) = @_;
999: my $temp='';
1.142 albertel 1000: foreach (@{$token->[3]}) {
1.35 www 1001: unless ($_=~/\W/) {
1.42 albertel 1002: my $val=$token->[2]->{$_};
1.150 albertel 1003: $val =~ s/([\%\@\\\"])/\\$1/g;
1.51 albertel 1004: #if ($val =~ m/^[\%\@]/) { $val="\\".$val; }
1.42 albertel 1005: $temp .= "my \$$_=\"$val\";"
1.20 albertel 1006: }
1.142 albertel 1007: }
1.8 albertel 1008: return $temp;
1009: }
1.22 albertel 1010:
1.34 www 1011: sub writeallows {
1.126 www 1012: unless ($#extlinks>=0) { return; }
1.34 www 1013: my $thisurl='/res/'.&Apache::lonnet::declutter(shift);
1.111 www 1014: if ($ENV{'httpref.'.$thisurl}) {
1015: $thisurl=$ENV{'httpref.'.$thisurl};
1016: }
1.34 www 1017: my $thisdir=$thisurl;
1018: $thisdir=~s/\/[^\/]+$//;
1019: my %httpref=();
1.142 albertel 1020: foreach (@extlinks) {
1.34 www 1021: $httpref{'httpref.'.
1.125 www 1022: &Apache::lonnet::hreflocation($thisdir,$_)}=$thisurl;
1.142 albertel 1023: }
1.126 www 1024: @extlinks=();
1.34 www 1025: &Apache::lonnet::appenv(%httpref);
1026: }
1027:
1.66 www 1028: #
1029: # Afterburner handles anchors, highlights and links
1030: #
1031: sub afterburn {
1032: my $result=shift;
1.154 albertel 1033: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
1034: ['highlight','anchor','link']);
1.66 www 1035: if ($ENV{'form.highlight'}) {
1.142 albertel 1036: foreach (split(/\,/,$ENV{'form.highlight'})) {
1.66 www 1037: my $anchorname=$_;
1038: my $matchthis=$anchorname;
1039: $matchthis=~s/\_+/\\s\+/g;
1040: $result=~s/($matchthis)/\<font color=\"red\"\>$1\<\/font\>/gs;
1.142 albertel 1041: }
1.66 www 1042: }
1043: if ($ENV{'form.link'}) {
1.142 albertel 1044: foreach (split(/\,/,$ENV{'form.link'})) {
1.66 www 1045: my ($anchorname,$linkurl)=split(/\>/,$_);
1046: my $matchthis=$anchorname;
1047: $matchthis=~s/\_+/\\s\+/g;
1048: $result=~s/($matchthis)/\<a href=\"$linkurl\"\>$1\<\/a\>/gs;
1.142 albertel 1049: }
1.66 www 1050: }
1051: if ($ENV{'form.anchor'}) {
1052: my $anchorname=$ENV{'form.anchor'};
1053: my $matchthis=$anchorname;
1054: $matchthis=~s/\_+/\\s\+/g;
1055: $result=~s/($matchthis)/\<a name=\"$anchorname\"\>$1\<\/a\>/s;
1056: $result.=(<<"ENDSCRIPT");
1057: <script>
1058: document.location.hash='$anchorname';
1059: </script>
1060: ENDSCRIPT
1061: }
1062: return $result;
1063: }
1064:
1.79 www 1065: sub storefile {
1066: my ($file,$contents)=@_;
1067: if (my $fh=Apache::File->new('>'.$file)) {
1068: print $fh $contents;
1069: $fh->close();
1.147 albertel 1070: } else {
1071: &warning("Unable to save file $file");
1.79 www 1072: }
1073: }
1074:
1.151 albertel 1075: sub createnewhtml {
1076: my $filecontents=(<<SIMPLECONTENT);
1.78 www 1077: <html>
1078: <head>
1079: <title>
1080: Title of Document Goes Here
1081: </title>
1082: </head>
1083: <body bgcolor="#FFFFFF">
1084:
1085: Body of Document Goes Here
1086:
1087: </body>
1088: </html>
1089: SIMPLECONTENT
1.151 albertel 1090: return $filecontents;
1091: }
1092:
1.147 albertel 1093:
1.151 albertel 1094: sub inserteditinfo {
1095: my ($result,$filecontents)=@_;
1.157 albertel 1096: $filecontents = &HTML::Entities::encode($filecontents);
1.147 albertel 1097: # my $editheader='<a href="#editsection">Edit below</a><hr />';
1.161 albertel 1098: my $buttons=(<<BUTTONS);
1099: <input type="submit" name="attemptclean"
1100: value="Save and then attempt to clean HTML" />
1101: <input type="submit" name="savethisfile" value="Save this" />
1102: <input type="submit" name="viewmode" value="View" />
1103: BUTTONS
1.78 www 1104: my $editfooter=(<<ENDFOOTER);
1105: <hr />
1106: <a name="editsection" />
1107: <form method="post">
1.161 albertel 1108: <input type="hidden" name="editmode" value="Edit" />
1.170 www 1109: $buttons<br />
1.78 www 1110: <textarea cols="80" rows="40" name="filecont">$filecontents</textarea>
1.170 www 1111: <br />$buttons
1.78 www 1112: <br />
1113: </form>
1114: ENDFOOTER
1.147 albertel 1115: # $result=~s/(\<body[^\>]*\>)/$1$editheader/is;
1.78 www 1116: $result=~s/(\<\/body\>)/$editfooter/is;
1117: return $result;
1118: }
1119:
1.152 albertel 1120: sub get_target {
1121: my $viewgrades=&Apache::lonnet::allowed('vgr',$ENV{'request.course.id'});
1122: if ( $ENV{'request.state'} eq 'published') {
1123: if ( defined($ENV{'form.grade_target'})
1124: && ($viewgrades == 'F' )) {
1125: return ($ENV{'form.grade_target'});
1.153 albertel 1126: } elsif (defined($ENV{'form.grade_target'})) {
1127: if (($ENV{'form.grade_target'} eq 'web') ||
1128: ($ENV{'form.grade_target'} eq 'tex') ) {
1129: return $ENV{'form.grade_target'}
1130: } else {
1131: return 'web';
1132: }
1.152 albertel 1133: } else {
1134: return 'web';
1135: }
1136: } elsif ($ENV{'request.state'} eq 'construct') {
1137: if ( defined($ENV{'form.grade_target'})) {
1138: return ($ENV{'form.grade_target'});
1139: } else {
1140: return 'web';
1141: }
1142: } else {
1143: return 'web';
1144: }
1145: }
1146:
1.24 sakharuk 1147: sub handler {
1148: my $request=shift;
1.68 www 1149:
1.152 albertel 1150: my $target=&get_target();
1.68 www 1151:
1.65 albertel 1152: $Apache::lonxml::debug=0;
1.68 www 1153:
1.25 sakharuk 1154: if ($ENV{'browser.mathml'}) {
1.27 albertel 1155: $request->content_type('text/xml');
1156: } else {
1157: $request->content_type('text/html');
1.25 sakharuk 1158: }
1.141 albertel 1159: &Apache::loncommon::no_cache($request);
1.27 albertel 1160: $request->send_http_header;
1.141 albertel 1161:
1.45 www 1162: return OK if $request->header_only;
1.27 albertel 1163:
1.79 www 1164:
1165: my $file=&Apache::lonnet::filelocation("",$request->uri);
1.78 www 1166: #
1167: # Edit action? Save file.
1168: #
1169: unless ($ENV{'request.state'} eq 'published') {
1.107 www 1170: if (($ENV{'form.savethisfile'}) || ($ENV{'form.attemptclean'})) {
1.79 www 1171: &storefile($file,$ENV{'form.filecont'});
1.78 www 1172: }
1173: }
1.24 sakharuk 1174: my %mystyle;
1.147 albertel 1175: my $result = '';
1.50 albertel 1176: my $filecontents=&Apache::lonnet::getfile($file);
1177: if ($filecontents == -1) {
1.78 www 1178: $result=(<<ENDNOTFOUND);
1179: <html>
1180: <head>
1181: <title>File not found</title>
1182: </head>
1183: <body bgcolor="#FFFFFF">
1184: <b>File not found: $file</b>
1185: </body>
1186: </html>
1187: ENDNOTFOUND
1.50 albertel 1188: $filecontents='';
1.151 albertel 1189: if ($ENV{'request.state'} ne 'published') {
1190: $filecontents=&createnewhtml();
1.161 albertel 1191: $ENV{'form.editmode'}='Edit'; #force edit mode
1.151 albertel 1192: }
1.50 albertel 1193: } else {
1.147 albertel 1194: unless ($ENV{'request.state'} eq 'published') {
1195: if ($ENV{'form.attemptclean'}) {
1196: $filecontents=&htmlclean($filecontents,1);
1.107 www 1197: }
1.147 albertel 1198: }
1.161 albertel 1199: if (!$ENV{'form.editmode'} || $ENV{'form.viewmode'}) {
1.172 albertel 1200: $result = &Apache::lonxml::xmlparse($request,$target,$filecontents,
1201: '',%mystyle);
1.147 albertel 1202: }
1.78 www 1203: }
1204:
1205: #
1206: # Edit action? Insert editing commands
1207: #
1208: unless ($ENV{'request.state'} eq 'published') {
1.161 albertel 1209: if ($ENV{'form.editmode'} && (!($ENV{'form.viewmode'}))) {
1.177 www 1210: my $displayfile=$request->uri;
1211: $displayfile=~s/^\/[^\/]*//;
1212: $result='<html><body bgcolor="#FFFFFF"><h3>'.$displayfile.
1213: '</h3></body></html>';
1.78 www 1214: $result=&inserteditinfo($result,$filecontents);
1.147 albertel 1215: }
1.66 www 1216: }
1.147 albertel 1217:
1.126 www 1218: writeallows($request->uri);
1.50 albertel 1219:
1.67 www 1220: $request->print($result);
1.64 albertel 1221:
1.45 www 1222: return OK;
1.24 sakharuk 1223: }
1.147 albertel 1224:
1.22 albertel 1225: sub debug {
1226: if ($Apache::lonxml::debug eq 1) {
1.146 albertel 1227: $|=1;
1228: print("DEBUG:".join('<br />',@_)."<br />\n");
1.22 albertel 1229: }
1230: }
1.49 albertel 1231:
1.22 albertel 1232: sub error {
1.74 albertel 1233: if (($Apache::lonxml::debug eq 1) || ($ENV{'request.state'} eq 'construct') ) {
1.166 matthew 1234: # If printing in construction space, put the error inside <pre></pre>
1.167 albertel 1235: print "<b>ERROR:</b>".join("\n",@_)."\n";
1.52 albertel 1236: } else {
1237: print "<b>An Error occured while processing this resource. The instructor has been notified.</b> <br />";
1238: #notify author
1.146 albertel 1239: &Apache::lonmsg::author_res_msg($ENV{'request.filename'},join('<br />',@_));
1.52 albertel 1240: #notify course
1241: if ( $ENV{'request.course.id'} ) {
1242: my $users=$ENV{'course.'.$ENV{'request.course.id'}.'.comment.email'};
1.143 www 1243: my $declutter=&Apache::lonnet::declutter($ENV{'request.filename'});
1.52 albertel 1244: foreach my $user (split /\,/, $users) {
1245: ($user,my $domain) = split /:/, $user;
1.143 www 1246: &Apache::lonmsg::user_normal_msg($user,$domain,
1.146 albertel 1247: "Error [$declutter]",join('<br />',@_));
1.52 albertel 1248: }
1249: }
1.74 albertel 1250:
1.52 albertel 1251: #FIXME probably shouldn't have me get everything forever.
1.146 albertel 1252: &Apache::lonmsg::user_normal_msg('albertel','msu',"Error in $ENV{'request.filename'}",join('<br />',@_));
1.74 albertel 1253: #&Apache::lonmsg::user_normal_msg('albertel','103',"Error in $ENV{'request.filename'}",$_[0]);
1.52 albertel 1254: }
1.22 albertel 1255: }
1.49 albertel 1256:
1.22 albertel 1257: sub warning {
1.73 harris41 1258: if ($ENV{'request.state'} eq 'construct') {
1.146 albertel 1259: print "<b>W</b>ARNING<b>:</b>".join('<br />',@_)."<br />\n";
1.73 harris41 1260: }
1.83 albertel 1261: }
1262:
1263: sub get_param {
1264: my ($param,$parstack,$safeeval,$context) = @_;
1265: if ( ! $context ) { $context = -1; }
1266: my $args ='';
1267: if ( $#$parstack > (-2-$context) ) { $args=$$parstack[$context]; }
1.157 albertel 1268: if ( ! $args ) { return undef; }
1.131 albertel 1269: if ( $args =~ /my \$$param=\"/ ) {
1270: return &Apache::run::run("{$args;".'return $'.$param.'}',$safeeval); #'
1271: } else {
1272: return undef;
1273: }
1.22 albertel 1274: }
1275:
1.132 albertel 1276: sub get_param_var {
1277: my ($param,$parstack,$safeeval,$context) = @_;
1278: if ( ! $context ) { $context = -1; }
1279: my $args ='';
1280: if ( $#$parstack > (-2-$context) ) { $args=$$parstack[$context]; }
1281: if ( $args !~ /my \$$param=\"/ ) { return undef; }
1282: my $value=&Apache::run::run("{$args;".'return $'.$param.'}',$safeeval); #'
1283: if ($value =~ /^[\$\@\%]/) {
1284: return &Apache::run::run("return $value",$safeeval,1);
1285: } else {
1286: return $value;
1287: }
1288: }
1289:
1.74 albertel 1290: sub register_insert {
1.75 albertel 1291: my @data = split /\n/, &Apache::lonnet::getfile('/home/httpd/lonTabs/insertlist.tab');
1.74 albertel 1292: my $i;
1.76 albertel 1293: my $tagnum=0;
1.74 albertel 1294: my @order;
1295: for ($i=0;$i < $#data; $i++) {
1296: my $line = $data[$i];
1297: if ( $line =~ /^\#/ || $line =~ /^\s*\n/) { next; }
1298: if ( $line =~ /TABLE/ ) { last; }
1.92 albertel 1299: my ($tag,$descrip,$color,$function,$show) = split(/,/, $line);
1.135 albertel 1300: if ($tag) {
1301: $insertlist{"$tagnum.tag"} = $tag;
1302: $insertlist{"$tagnum.description"} = $descrip;
1303: $insertlist{"$tagnum.color"} = $color;
1304: $insertlist{"$tagnum.function"} = $function;
1305: if (!defined($show)) { $show='yes'; }
1306: $insertlist{"$tagnum.show"}= $show;
1307: $insertlist{"$tag.num"}=$tagnum;
1308: $tagnum++;
1309: }
1.74 albertel 1310: }
1.76 albertel 1311: $i++; #skipping TABLE line
1312: $tagnum = 0;
1.74 albertel 1313: for (;$i < $#data;$i++) {
1314: my $line = $data[$i];
1.76 albertel 1315: my ($mnemonic,@which) = split(/ +/,$line);
1316: my $tag = $insertlist{"$tagnum.tag"};
1.144 matthew 1317: for (my $j=0;$j <=$#which;$j++) {
1.74 albertel 1318: if ( $which[$j] eq 'Y' ) {
1.76 albertel 1319: if ($insertlist{"$j.show"} ne 'no') {
1320: push(@{ $insertlist{"$tag.which"} },$j);
1321: }
1.74 albertel 1322: }
1323: }
1.76 albertel 1324: $tagnum++;
1.74 albertel 1325: }
1326: }
1.98 albertel 1327:
1328: sub description {
1329: my ($token)=@_;
1.138 albertel 1330: my $tagnum;
1331: my $tag=$token->[1];
1332: foreach my $namespace (reverse @Apache::lonxml::namespace) {
1333: my $testtag=$namespace.'::'.$tag;
1334: $tagnum=$insertlist{"$testtag.num"};
1335: if (defined($tagnum)) { last; }
1336: }
1337: if (!defined ($tagnum)) { $tagnum=$Apache::lonxml::insertlist{"$tag.num"}; }
1338: return $insertlist{$tagnum.'.description'};
1.98 albertel 1339: }
1.123 albertel 1340:
1341: # ----------------------------------------------------------------- whichuser
1342: # returns a list of $symb, $courseid, $domain, $name that is correct for
1343: # calls to lonnet functions for this setup.
1344: # - looks for form.grade_ parameters
1345: sub whichuser {
1.134 albertel 1346: my ($symb,$courseid,$domain,$name);
1.123 albertel 1347: if (defined($ENV{'form.grade_symb'})) {
1348: my $tmp_courseid=$ENV{'form.grade_courseid'};
1349: my $allowed=&Apache::lonnet::allowed('mgr',$tmp_courseid);
1350: if ($allowed) {
1351: $symb=$ENV{'form.grade_symb'};
1352: $courseid=$ENV{'form.grade_courseid'};
1353: $domain=$ENV{'form.grade_domain'};
1354: $name=$ENV{'form.grade_username'};
1355: }
1.134 albertel 1356: } else {
1357: $symb=&Apache::lonnet::symbread();
1358: $courseid=$ENV{'request.course.id'};
1359: $domain=$ENV{'user.domain'};
1360: $name=$ENV{'user.name'};
1.123 albertel 1361: }
1362: return ($symb,$courseid,$domain,$name);
1363: }
1364:
1.1 sakharuk 1365: 1;
1366: __END__
1.68 www 1367:
1368:
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