Annotation of loncom/xml/lonxml.pm, revision 1.213
1.2 sakharuk 1: # The LearningOnline Network with CAPA
1.3 sakharuk 2: # XML Parser Module
1.2 sakharuk 3: #
1.213 ! albertel 4: # $Id: lonxml.pm,v 1.212 2002/11/06 23:05:02 albertel Exp $
1.139 www 5: #
6: # Copyright Michigan State University Board of Trustees
7: #
8: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
9: #
10: # LON-CAPA is free software; you can redistribute it and/or modify
11: # it under the terms of the GNU General Public License as published by
12: # the Free Software Foundation; either version 2 of the License, or
13: # (at your option) any later version.
14: #
15: # LON-CAPA is distributed in the hope that it will be useful,
16: # but WITHOUT ANY WARRANTY; without even the implied warranty of
17: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18: # GNU General Public License for more details.
19: #
20: # You should have received a copy of the GNU General Public License
21: # along with LON-CAPA; if not, write to the Free Software
22: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23: #
24: # /home/httpd/html/adm/gpl.txt
25: #
26: # http://www.lon-capa.org/
27: #
28: # Copyright for TtHfunc and TtMfunc by Ian Hutchinson.
29: # TtHfunc and TtMfunc (the "Code") may be compiled and linked into
30: # binary executable programs or libraries distributed by the
31: # Michigan State University (the "Licensee"), but any binaries so
32: # distributed are hereby licensed only for use in the context
33: # of a program or computational system for which the Licensee is the
34: # primary author or distributor, and which performs substantial
35: # additional tasks beyond the translation of (La)TeX into HTML.
36: # The C source of the Code may not be distributed by the Licensee
37: # to any other parties under any circumstances.
38: #
1.3 sakharuk 39: # last modified 06/26/00 by Alexander Sakharuk
1.33 www 40: # 11/6 Gerd Kortemeyer
1.45 www 41: # 6/1/1 Gerd Kortemeyer
1.56 albertel 42: # 2/21,3/13 Guy
1.68 www 43: # 3/29,5/4 Gerd Kortemeyer
1.73 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
1.205 www 63: qw(@pwd @outputstack $redirection $import @extlinks $metamode $evaluate %insertlist @namespace $prevent_entity_encode $errorcount $warningcount);
1.1 sakharuk 64: use strict;
1.167 albertel 65: use HTML::LCParser();
1.161 albertel 66: use HTML::TreeBuilder();
67: use HTML::Entities();
68: use Safe();
69: use Safe::Hole();
70: use Math::Cephes();
71: use Math::Random();
72: use Opcode();
1.72 albertel 73:
74: sub register {
1.141 albertel 75: my ($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();
1.198 www 102: use Apache::lonfeedback();
1.200 www 103: use Apache::lonmsg();
1.79 www 104:
1.72 albertel 105: #================================================== Main subroutine: xmlparse
106: #debugging control, to turn on debugging modify the correct handler
107: $Apache::lonxml::debug=0;
1.206 albertel 108:
109: # keeps count of the number of warnings and errors generated in a parse
110: $warningcount=0;
111: $errorcount=0;
1.72 albertel 112:
113: #path to the directory containing the file currently being processed
114: @pwd=();
115:
116: #these two are used for capturing a subset of the output for later processing,
117: #don't touch them directly use &startredirection and &endredirection
118: @outputstack = ();
119: $redirection = 0;
120:
121: #controls wheter the <import> tag actually does
122: $import = 1;
123: @extlinks=();
124:
125: # meta mode is a bit weird only some output is to be turned off
126: #<output> tag turns metamode off (defined in londefdef.pm)
127: $metamode = 0;
128:
129: # turns on and of run::evaluate actually derefencing var refs
130: $evaluate = 1;
1.7 albertel 131:
1.74 albertel 132: # data structure for eidt mode, determines what tags can go into what other tags
133: %insertlist=();
1.68 www 134:
1.99 albertel 135: # stores the list of active tag namespaces
1.76 albertel 136: @namespace=();
137:
1.169 albertel 138: # if 0 all high ASCII characters will be encoded into HTML Entities
139: $prevent_entity_encode=0;
140:
1.99 albertel 141: # has the dynamic menu been updated to know about this resource
142: $Apache::lonxml::registered=0;
143:
1.172 albertel 144: # a pointer the the Apache request object
145: $Apache::lonxml::request='';
146:
1.204 albertel 147: # a problem number counter, and check on hether it is used
148: $Apache::lonxml::counter=0;
149: $Apache::lonxml::counter_changed=0;
150:
1.212 albertel 151: #internal check on whether to look at style defs
152: $Apache::lonxml::usestyle=1;
153:
1.68 www 154: sub xmlbegin {
155: my $output='';
156: if ($ENV{'browser.mathml'}) {
157: $output='<?xml version="1.0"?>'
158: .'<?xml-stylesheet type="text/css" href="/adm/MathML/mathml.css"?>'
159: .'<!DOCTYPE html SYSTEM "/adm/MathML/mathml.dtd" '
160: .'[<!ENTITY mathns "http://www.w3.org/1998/Math/MathML">]>'
161: .'<html xmlns:math="http://www.w3.org/1998/Math/MathML" '
162: .'xmlns="http://www.w3.org/TR/REC-html40">';
163: } else {
164: $output='<html>';
165: }
166: return $output;
167: }
168:
169: sub xmlend {
1.194 www 170: my ($discussiononly,$symb)=@_;
1.103 www 171: my $discussion='';
172: if ($ENV{'request.course.id'}) {
1.109 www 173: my $crs='/'.$ENV{'request.course.id'};
174: if ($ENV{'request.course.sec'}) {
175: $crs.='_'.$ENV{'request.course.sec'};
176: }
177: $crs=~s/\_/\//g;
178: my $seeid=&Apache::lonnet::allowed('rin',$crs);
1.194 www 179: unless ($symb) {
180: $symb=&Apache::lonnet::symbread();
181: }
1.103 www 182: if ($symb) {
183: my %contrib=&Apache::lonnet::restore($symb,$ENV{'request.course.id'},
184: $ENV{'course.'.$ENV{'request.course.id'}.'.domain'},
185: $ENV{'course.'.$ENV{'request.course.id'}.'.num'});
186: if ($contrib{'version'}) {
1.194 www 187: unless ($discussiononly) {
188: $discussion.=
189: '<address><hr />';
190: }
1.103 www 191: my $idx;
192: for ($idx=1;$idx<=$contrib{'version'};$idx++) {
1.110 www 193: my $hidden=($contrib{'hidden'}=~/\.$idx\./);
194: unless (($hidden) && (!$seeid)) {
195: my $message=$contrib{$idx.':message'};
196: $message=~s/\n/\<br \/\>/g;
1.186 www 197: $message=&Apache::lontexconvert::msgtexconverted($message);
1.110 www 198: if ($message) {
199: if ($hidden) {
200: $message='<font color="#888888">'.$message.'</font>';
201: }
1.196 www 202: my $screenname=&Apache::loncommon::screenname(
203: $contrib{$idx.':sendername'},
204: $contrib{$idx.':senderdomain'});
205: my $plainname=&Apache::loncommon::nickname(
206: $contrib{$idx.':sendername'},
207: $contrib{$idx.':senderdomain'});
208:
1.109 www 209: my $sender='Anonymous';
210: if ((!$contrib{$idx.':anonymous'}) || ($seeid)) {
1.194 www 211: $sender=&Apache::loncommon::aboutmewrapper(
1.196 www 212: $plainname,
1.194 www 213: $contrib{$idx.':sendername'},
214: $contrib{$idx.':senderdomain'}).' ('.
1.164 www 215: $contrib{$idx.':sendername'}.' at '.
216: $contrib{$idx.':senderdomain'}.')';
1.109 www 217: if ($contrib{$idx.':anonymous'}) {
1.164 www 218: $sender.=' [anonymous] '.
1.196 www 219: $screenname;
1.110 www 220: }
221: if ($seeid) {
222: if ($hidden) {
223: $sender.=' <a href="/adm/feedback?unhide='.
224: $symb.':::'.$idx.'">Make Visible</a>';
225: } else {
226: $sender.=' <a href="/adm/feedback?hide='.
227: $symb.':::'.$idx.'">Hide</a>';
228: }
1.109 www 229: }
1.164 www 230: } else {
1.196 www 231: if ($screenname) {
232: $sender='<i>'.$screenname.'</i>';
1.164 www 233: }
1.109 www 234: }
235: $discussion.='<p><b>'.$sender.'</b> ('.
1.103 www 236: localtime($contrib{$idx.':timestamp'}).
237: '):<blockquote>'.$message.
1.110 www 238: '</blockquote></p>';
239: }
240: }
1.103 www 241: }
1.194 www 242: unless ($discussiononly) {
243: $discussion.='</address>';
244: }
245: }
246: if ($discussiononly) {
1.195 www 247: $discussion.=(<<ENDDISCUSS);
1.198 www 248: <form action="/adm/feedback" method="post" name="mailform">
1.195 www 249: <input type="submit" name="discuss" value="Post Discussion" />
250: <input type="submit" name="anondiscuss" value="Post Anonymous Discussion" />
251: <input type="hidden" name="symb" value="$symb" />
252: <input type="hidden" name="sendit" value="true" />
253: <br />
254: <font size="1">Note: in anonymous discussion, your name is visible only to
255: course faculty</font><br />
256: <textarea name=comment cols=60 rows=10 wrap=hard></textarea>
257: </form>
258: ENDDISCUSS
1.198 www 259: $discussion.=&Apache::lonfeedback::generate_preview_button();
1.103 www 260: }
261: }
262: }
1.194 www 263: return $discussion.($discussiononly?'':'</html>');
1.119 www 264: }
265:
266: sub tokeninputfield {
1.120 www 267: my $defhost=$Apache::lonnet::perlvar{'lonHostID'};
268: $defhost=~tr/a-z/A-Z/;
1.119 www 269: return (<<ENDINPUTFIELD)
1.120 www 270: <script>
271: function updatetoken() {
272: var comp=new Array;
273: var barcode=unescape(document.tokeninput.barcode.value);
274: comp=barcode.split('*');
275: if (typeof(comp[0])!="undefined") {
276: document.tokeninput.codeone.value=comp[0];
277: }
278: if (typeof(comp[1])!="undefined") {
279: document.tokeninput.codetwo.value=comp[1];
280: }
281: if (typeof(comp[2])!="undefined") {
282: comp[2]=comp[2].toUpperCase();
283: document.tokeninput.codethree.value=comp[2];
284: }
285: document.tokeninput.barcode.value='';
286: }
287: </script>
288: <form method="post" name="tokeninput">
1.119 www 289: <table border="2" bgcolor="#FFFFBB">
290: <tr><th>DocID Checkin</th></tr>
291: <tr><td>
292: <table>
293: <tr>
294: <td>Scan in Barcode</td>
1.120 www 295: <td><input type="text" size="22" name="barcode"
296: onChange="updatetoken()"/></td>
1.119 www 297: </tr>
298: <tr><td><i>or</i> Type in DocID</td>
299: <td>
300: <input type="text" size="5" name="codeone" />
1.120 www 301: <b><font size="+2">*</font></b>
1.119 www 302: <input type="text" size="5" name="codetwo" />
1.120 www 303: <b><font size="+2">*</font></b>
304: <input type="text" size="10" name="codethree" value="$defhost"
305: onChange="this.value=this.value.toUpperCase()" />
1.119 www 306: </td></tr>
307: </table>
308: </td></tr>
309: <tr><td><input type="submit" value="Check in DocID" /></td></tr>
310: </table>
311: </form>
312: ENDINPUTFIELD
1.112 www 313: }
314:
1.116 www 315: sub maketoken {
1.118 www 316: my ($symb,$tuname,$tudom,$tcrsid)=@_;
1.112 www 317: unless ($symb) {
318: $symb=&Apache::lonnet::symbread();
319: }
320: unless ($tuname) {
321: $tuname=$ENV{'user.name'};
322: $tudom=$ENV{'user.domain'};
323: $tcrsid=$ENV{'request.course.id'};
324: }
1.116 www 325:
1.118 www 326: return &Apache::lonnet::checkout($symb,$tuname,$tudom,$tcrsid);
327: }
328:
329: sub printtokenheader {
1.133 albertel 330: my ($target,$token,$tsymb,$tcrsid,$tudom,$tuname)=@_;
1.116 www 331: unless ($token) { return ''; }
1.118 www 332:
1.133 albertel 333: my ($symb,$courseid,$domain,$name) = &Apache::lonxml::whichuser();
334: unless ($tsymb) {
335: $tsymb=$symb;
1.118 www 336: }
337: unless ($tuname) {
1.133 albertel 338: $tuname=$name;
339: $tudom=$domain;
340: $tcrsid=$courseid;
1.118 www 341: }
1.114 www 342:
343: my %reply=&Apache::lonnet::get('environment',
344: ['firstname','middlename','lastname','generation'],
345: $tudom,$tuname);
346: my $plainname=$reply{'firstname'}.' '.
347: $reply{'middlename'}.' '.
348: $reply{'lastname'}.' '.
349: $reply{'generation'};
350:
1.112 www 351: if ($target eq 'web') {
1.145 www 352: my %idhash=&Apache::lonnet::idrget($tudom,($tuname));
1.115 www 353: return
354: '<img align="right" src="/cgi-bin/barcode.gif?encode='.$token.'" />'.
355: 'Checked out for '.$plainname.
1.114 www 356: '<br />User: '.$tuname.' at '.$tudom.
1.145 www 357: '<br />ID: '.$idhash{$tuname}.
1.117 www 358: '<br />CourseID: '.$tcrsid.
1.145 www 359: '<br />Course: '.$ENV{'course.'.$tcrsid.'.description'}.
1.114 www 360: '<br />DocID: '.$token.
1.116 www 361: '<br />Time: '.localtime().'<hr />';
1.112 www 362: } else {
1.121 albertel 363: return $token;
1.112 www 364: }
1.68 www 365: }
366:
1.70 www 367: sub fontsettings() {
368: my $headerstring='';
369: if (($ENV{'browser.os'} eq 'mac') && (!$ENV{'browser.mathml'})) {
370: $headerstring.=
371: '<meta Content-Type="text/html; charset=x-mac-roman">';
372: }
373: return $headerstring;
374: }
375:
1.68 www 376: sub registerurl {
1.100 www 377: my $forcereg=shift;
1.155 matthew 378: my $target = shift;
379: my $result = '';
1.197 sakharuk 380:
1.179 matthew 381: if ($target eq 'edit') {
1.187 matthew 382: $result .="<script>\n".
383: "if (typeof menu != 'undefined') {menu.currentURL=null;}\n".
1.179 matthew 384: &Apache::loncommon::browser_and_searcher_javascript().
385: "\n</script>\n";
386: }
1.176 www 387: if ((($ENV{'request.publicaccess'}) ||
388: (!&Apache::lonnet::is_on_map($ENV{'REQUEST_URI'}))) &&
389: (!$forcereg)) {
1.179 matthew 390: return $result.
1.130 www 391: '<script>function LONCAPAreg(){} function LONCAPAstale(){}</script>';
392: }
1.128 albertel 393: if ($Apache::lonxml::registered && !$forcereg) { return ''; }
1.105 albertel 394: $Apache::lonxml::registered=1;
1.159 www 395: my $nothing='';
396: if ($ENV{'browser.type'} eq 'explorer') { $nothing='javascript:void(0);'; }
1.200 www 397: my $newmail='';
398: if (&Apache::lonmsg::newmail()) {
1.201 www 399: $newmail='menu.setstatus("you have","messages");';
1.200 www 400: }
1.181 www 401: my $timesync='menu.syncclock(1000*'.time.');';
1.100 www 402: if (($ENV{'REQUEST_URI'}!~/^\/(res\/)*adm\//) || ($forcereg)) {
1.87 www 403: my $hwkadd='';
1.168 albertel 404: if ($ENV{'request.filename'}=~/\.(problem|exam|quiz|assess|survey|form)$/) {
1.87 www 405: if (&Apache::lonnet::allowed('vgr',$ENV{'request.course.id'})) {
406: $hwkadd.=(<<ENDSUBM);
1.168 albertel 407: menu.switchbutton(7,1,'subm.gif','view sub','missions','gocmd("/adm/grades","submission")');
1.87 www 408: ENDSUBM
409: }
410: if (&Apache::lonnet::allowed('mgr',$ENV{'request.course.id'})) {
411: $hwkadd.=(<<ENDGRDS);
1.171 albertel 412: menu.switchbutton(7,2,'pgrd.gif','problem','grades','gocmd("/adm/grades","gradingmenu")');
1.87 www 413: ENDGRDS
414: }
415: if (&Apache::lonnet::allowed('opa',$ENV{'request.course.id'})) {
416: $hwkadd.=(<<ENDPARM);
1.168 albertel 417: menu.switchbutton(7,3,'pparm.gif','problem','parms','gocmd("/adm/parmset","set")');
1.87 www 418: ENDPARM
419: }
420: }
1.155 matthew 421: $result = (<<ENDREGTHIS);
1.87 www 422:
1.68 www 423: <script language="JavaScript">
1.71 www 424: // BEGIN LON-CAPA Internal
1.86 www 425:
1.69 www 426: function LONCAPAreg() {
1.159 www 427: menu=window.open("$nothing","LONCAPAmenu","",false);
1.86 www 428: menu.clearTimeout(menu.menucltim);
1.174 www 429: $timesync
1.200 www 430: $newmail
1.69 www 431: menu.currentURL=window.location.pathname;
1.175 www 432: menu.reloadURL=window.location.pathname;
1.69 www 433: menu.currentStale=0;
1.85 www 434: menu.clearbut(3,1);
435: menu.switchbutton
1.108 www 436: (6,3,'catalog.gif','catalog','info','catalog_info()');
437: menu.switchbutton
1.85 www 438: (8,1,'eval.gif','evaluate','this','gopost("/adm/evaluate",currentURL)');
439: menu.switchbutton
1.184 www 440: (8,2,'fdbk.gif','feedback','discuss','gopost("/adm/feedback",currentURL)');
1.85 www 441: menu.switchbutton
442: (8,3,'prt.gif','prepare','printout','gopost("/adm/printout",currentURL)');
443: menu.switchbutton
444: (2,1,'back.gif','backward','','gopost("/adm/flip","back:"+currentURL)');
445: menu.switchbutton
446: (2,3,'forw.gif','forward','','gopost("/adm/flip","forward:"+currentURL)');
1.94 www 447: menu.switchbutton
448: (9,1,'sbkm.gif','set','bookmark','set_bookmark()');
449: menu.switchbutton
450: (9,2,'vbkm.gif','view','bookmark','edit_bookmarks()');
451: menu.switchbutton
1.95 www 452: (9,3,'anot.gif','anno-','tations','annotate()');
1.87 www 453: $hwkadd
1.69 www 454: }
1.86 www 455:
1.69 www 456: function LONCAPAstale() {
1.159 www 457: menu=window.open("$nothing","LONCAPAmenu","",false);
1.86 www 458: menu.currentStale=1;
1.175 www 459: if (menu.reloadURL!='' && menu.reloadURL!= null) {
460: menu.switchbutton
461: (3,1,'reload.gif','return','location','go(reloadURL)');
462: }
1.127 www 463: menu.clearbut(7,1);
464: menu.clearbut(7,2);
465: menu.clearbut(7,3);
1.86 www 466: menu.menucltim=menu.setTimeout(
1.94 www 467: 'clearbut(2,1);clearbut(2,3);clearbut(8,1);clearbut(8,2);clearbut(8,3);'+
1.108 www 468: 'clearbut(9,1);clearbut(9,2);clearbut(9,3);clearbut(6,3)',
1.86 www 469: 2000);
470:
1.87 www 471: }
1.86 www 472:
473: // END LON-CAPA Internal
474: </script>
475: ENDREGTHIS
476:
477: } else {
1.155 matthew 478: $result = (<<ENDDONOTREGTHIS);
1.86 www 479:
480: <script language="JavaScript">
481: // BEGIN LON-CAPA Internal
482:
483: function LONCAPAreg() {
1.159 www 484: menu=window.open("$nothing","LONCAPAmenu","",false);
1.174 www 485: $timesync
1.69 www 486: menu.currentStale=1;
1.85 www 487: menu.clearbut(2,1);
488: menu.clearbut(2,3);
489: menu.clearbut(8,1);
490: menu.clearbut(8,2);
491: menu.clearbut(8,3);
1.86 www 492: if (menu.currentURL) {
493: menu.switchbutton
494: (3,1,'reload.gif','return','location','go(currentURL)');
495: } else {
496: menu.clearbut(3,1);
497: }
498: }
499:
500: function LONCAPAstale() {
1.68 www 501: }
1.86 www 502:
1.71 www 503: // END LON-CAPA Internal
1.68 www 504: </script>
1.86 www 505: ENDDONOTREGTHIS
1.155 matthew 506: }
507: return $result;
1.69 www 508: }
509:
510: sub loadevents() {
511: return 'LONCAPAreg();';
512: }
513:
514: sub unloadevents() {
515: return 'LONCAPAstale();';
1.68 www 516: }
517:
1.48 albertel 518: sub printalltags {
519: my $temp;
520: foreach $temp (sort keys %Apache::lonxml::alltags) {
1.141 albertel 521: &Apache::lonxml::debug("$temp -- ".
522: join(',',@{ $Apache::lonxml::alltags{$temp} }));
1.48 albertel 523: }
524: }
1.31 sakharuk 525:
1.3 sakharuk 526: sub xmlparse {
1.172 albertel 527: my ($request,$target,$content_file_string,$safeinit,%style_for_target) = @_;
1.96 albertel 528:
1.172 albertel 529: &setup_globals($request,$target);
1.178 www 530: #
531: # do we have a course style file?
532: #
533:
1.208 albertel 534: if ($ENV{'request.course.id'} && $ENV{'request.state'} ne 'construct') {
1.178 www 535: my $bodytext=
536: $ENV{'course.'.$ENV{'request.course.id'}.'.default_xml_style'};
537: if ($bodytext) {
538: my $location=&Apache::lonnet::filelocation('',$bodytext);
539: my $styletext=&Apache::lonnet::getfile($location);
540: if ($styletext ne '-1') {
541: %style_for_target = (%style_for_target,
542: &Apache::style::styleparser($target,$styletext));
543: }
544: }
545: }
546:
1.48 albertel 547: #&printalltags();
1.16 albertel 548: my @pars = ();
1.23 albertel 549: my $pwd=$ENV{'request.filename'};
550: $pwd =~ s:/[^/]*$::;
551: &newparser(\@pars,\$content_file_string,$pwd);
1.24 sakharuk 552:
1.3 sakharuk 553: my $safeeval = new Safe;
1.40 albertel 554: my $safehole = new Safe::Hole;
1.82 ng 555: &init_safespace($target,$safeeval,$safehole,$safeinit);
1.3 sakharuk 556: #-------------------- Redefinition of the target in the case of compound target
557:
558: ($target, my @tenta) = split('&&',$target);
559:
1.150 albertel 560: my @stack = ();
1.3 sakharuk 561: my @parstack = ();
1.17 albertel 562: &initdepth;
1.67 www 563:
1.101 albertel 564: my $finaloutput = &inner_xmlparse($target,\@stack,\@parstack,\@pars,
565: $safeeval,\%style_for_target);
1.125 www 566: if ($ENV{'request.uri'}) {
567: &writeallows($ENV{'request.uri'});
568: }
1.204 albertel 569: if ($Apache::lonxml::counter_changed) { &store_counter() }
1.3 sakharuk 570: return $finaloutput;
1.106 www 571: }
572:
573: sub htmlclean {
1.107 www 574: my ($raw,$full)=@_;
1.106 www 575:
576: my $tree = HTML::TreeBuilder->new;
577: $tree->ignore_unknown(0);
1.140 albertel 578:
1.106 www 579: $tree->parse($raw);
580:
1.107 www 581: my $output= $tree->as_HTML(undef,' ');
1.140 albertel 582:
1.161 albertel 583: $output=~s/\<(br|hr|img|meta|allow)(.*?)\>/\<$1$2 \/\>/gis;
1.111 www 584: $output=~s/\<\/(br|hr|img|meta|allow)\>//gis;
1.107 www 585: unless ($full) {
586: $output=~s/\<[\/]*(body|head|html)\>//gis;
587: }
1.106 www 588:
589: $tree = $tree->delete;
590:
591: return $output;
1.15 albertel 592: }
593:
1.191 albertel 594: sub latex_special_symbols {
1.188 sakharuk 595: my ($current_token,$stack,$parstack)=@_;
1.192 albertel 596: $current_token=~s/\\/\\char92 /g;
597: $current_token=~s/\^/\\char94 /g;
598: $current_token=~s/\~/\\char126 /g;
1.197 sakharuk 599: $current_token=~s/(&[^a-z\#])/\\$1/g;
1.203 sakharuk 600: $current_token=~s/([^&])\#/$1\\#/g;
1.192 albertel 601: $current_token=~s/(\$|_|{|})/\\$1/g;
602: $current_token=~s/\\char92 /\\texttt{\\char92}/g;
603: $current_token=~s/>/\$>\$/g; #more
604: $current_token=~s/</\$<\$/g; #less
605: if ($current_token=~m/\d%/) {$current_token =~ s/(\d)%/$1\\%/g;} #percent after digit
606: if ($current_token=~m/\s%/) {$current_token =~ s/(\s)%/$1\\%/g;} #persent after space
1.188 sakharuk 607: return $current_token;
608: }
609:
1.101 albertel 610: sub inner_xmlparse {
611: my ($target,$stack,$parstack,$pars,$safeeval,$style_for_target)=@_;
612: my $finaloutput = '';
613: my $result;
614: my $token;
615: while ( $#$pars > -1 ) {
616: while ($token = $$pars['-1']->get_token) {
617: if (($token->[0] eq 'T') || ($token->[0] eq 'C') || ($token->[0] eq 'D') ) {
618: if ($metamode<1) {
1.190 albertel 619: my $text=$token->[1];
1.193 albertel 620: if ($token->[0] eq 'C' && $target eq 'tex') {
1.190 albertel 621: $text = '%'.$text;
622: $text =~ s/[\n\r]//g;
1.182 sakharuk 623: }
1.190 albertel 624: $result.=$text;
1.101 albertel 625: }
626: } elsif ($token->[0] eq 'PI') {
627: if ($metamode<1) {
628: $result=$token->[2];
629: }
630: } elsif ($token->[0] eq 'S') {
1.140 albertel 631: # add tag to stack
1.101 albertel 632: push (@$stack,$token->[1]);
633: # add parameters list to another stack
634: push (@$parstack,&parstring($token));
1.140 albertel 635: &increasedepth($token);
1.212 albertel 636: if ($Apache::lonxml::usestyle &&
637: exists($$style_for_target{$token->[1]})) {
638: $Apache::lonxml::usestyle=0;
639: my $string=$$style_for_target{$token->[1]}.
640: '<LONCAPA_INTERNAL_TURN_STYLE_ON />';
641: &Apache::lonxml::newparser($pars,\$string);
1.101 albertel 642: } else {
643: $result = &callsub("start_$token->[1]", $target, $token, $stack,
644: $parstack, $pars, $safeeval, $style_for_target);
1.140 albertel 645: }
1.101 albertel 646: } elsif ($token->[0] eq 'E') {
647: #clear out any tags that didn't end
648: while ($token->[1] ne $$stack['-1'] && ($#$stack > -1)) {
1.150 albertel 649: my $lasttag=$$stack[-1];
650: if ($token->[1] =~ /^$lasttag$/i) {
651: &Apache::lonxml::warning('Using tag </'.$token->[1].'> as end tag to <'.$$stack[-1].'>');
652: last;
653: } else {
1.152 albertel 654: &Apache::lonxml::warning('Found tag </'.$token->[1].'> when looking for </'.$$stack[-1].'> in file');
1.150 albertel 655: &end_tag($stack,$parstack,$token);
656: }
1.101 albertel 657: }
1.140 albertel 658:
1.212 albertel 659: if ($Apache::lonxml::usestyle &&
660: exists($$style_for_target{'/'."$token->[1]"})) {
661: $Apache::lonxml::usestyle=0;
662: my $string=$$style_for_target{'/'.$token->[1]}.
663: '<LONCAPA_INTERNAL_TURN_STYLE_ON />';
664: &Apache::lonxml::newparser($pars,\$string);
1.101 albertel 665: } else {
666: $result = &callsub("end_$token->[1]", $target, $token, $stack,
667: $parstack, $pars,$safeeval, $style_for_target);
668: }
669: } else {
670: &Apache::lonxml::error("Unknown token event :$token->[0]:$token->[1]:");
671: }
672: #evaluate variable refs in result
673: if ($result ne "") {
674: if ( $#$parstack > -1 ) {
1.169 albertel 675: $result=&Apache::run::evaluate($result,$safeeval,$$parstack[-1]);
1.101 albertel 676: } else {
1.169 albertel 677: $result= &Apache::run::evaluate($result,$safeeval,'');
1.101 albertel 678: }
1.163 albertel 679: }
1.190 albertel 680: if (($token->[0] eq 'T') || ($token->[0] eq 'C') || ($token->[0] eq 'D') ) {
681: if ($target eq 'tex') {
1.191 albertel 682: $result=&latex_special_symbols($result,$stack,$parstack);
1.190 albertel 683: }
684: }
685:
1.169 albertel 686: # Encode any high ASCII characters
687: if (!$Apache::lonxml::prevent_entity_encode) {
688: $result=&HTML::Entities::encode($result,"\200-\377");
689: }
690: if ($Apache::lonxml::redirection) {
691: $Apache::lonxml::outputstack['-1'] .= $result;
692: } else {
693: $finaloutput.=$result;
694: }
695: $result = '';
696:
1.101 albertel 697: if ($token->[0] eq 'E') {
698: &end_tag($stack,$parstack,$token);
699: }
700: }
1.212 albertel 701: if ($#$pars > -1) {
702: pop @$pars;
703: pop @Apache::lonxml::pwd;
704: }
1.101 albertel 705: }
706:
707: # if ($target eq 'meta') {
708: # $finaloutput.=&endredirection;
709: # }
710:
1.169 albertel 711:
1.101 albertel 712: if (($ENV{'QUERY_STRING'}) && ($target eq 'web')) {
713: $finaloutput=&afterburn($finaloutput);
714: }
715: return $finaloutput;
716: }
1.67 www 717:
1.7 albertel 718: sub callsub {
1.84 albertel 719: my ($sub,$target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.7 albertel 720: my $currentstring='';
1.72 albertel 721: my $nodefault;
1.7 albertel 722: {
1.59 albertel 723: my $sub1;
1.7 albertel 724: no strict 'refs';
1.68 www 725: my $tag=$token->[1];
1.141 albertel 726: my $space=$Apache::lonxml::alltags{$tag}[-1];
1.68 www 727: if (!$space) {
1.141 albertel 728: $tag=~tr/A-Z/a-z/;
1.68 www 729: $sub=~tr/A-Z/a-z/;
1.141 albertel 730: $space=$Apache::lonxml::alltags{$tag}[-1]
1.68 www 731: }
1.97 albertel 732:
733: my $deleted=0;
734: $Apache::lonxml::curdepth=join('_',@Apache::lonxml::depthcounter);
735: if (($token->[0] eq 'S') && ($target eq 'modified')) {
736: $deleted=&Apache::edit::handle_delete($space,$target,$token,$tagstack,
737: $parstack,$parser,$safeeval,
738: $style);
739: }
740: if (!$deleted) {
741: if ($space) {
1.189 sakharuk 742: &Apache::lonxml::debug("Calling sub $sub in $space $metamode");
1.97 albertel 743: $sub1="$space\:\:$sub";
744: ($currentstring,$nodefault) = &$sub1($target,$token,$tagstack,
745: $parstack,$parser,$safeeval,
746: $style);
747: } else {
1.189 sakharuk 748: &Apache::lonxml::debug("NOT Calling sub $sub in $space $metamode");
1.97 albertel 749: if ($metamode <1) {
750: if (defined($token->[4]) && ($metamode < 1)) {
751: $currentstring = $token->[4];
752: } else {
753: $currentstring = $token->[2];
754: }
1.62 sakharuk 755: }
1.7 albertel 756: }
1.97 albertel 757: # &Apache::lonxml::debug("nodefalt:$nodefault:");
758: if ($currentstring eq '' && $nodefault eq '') {
759: if ($target eq 'edit') {
760: &Apache::lonxml::debug("doing default edit for $token->[1]");
761: if ($token->[0] eq 'S') {
762: $currentstring = &Apache::edit::tag_start($target,$token);
763: } elsif ($token->[0] eq 'E') {
764: $currentstring = &Apache::edit::tag_end($target,$token);
765: }
766: } elsif ($target eq 'modified') {
767: if ($token->[0] eq 'S') {
768: $currentstring = $token->[4];
769: $currentstring.=&Apache::edit::handle_insert();
1.210 www 770: } elsif ($token->[0] eq 'E') {
771: $currentstring = $token->[2];
772: $currentstring.=&Apache::edit::handle_insertafter($token->[1]);
1.97 albertel 773: } else {
774: $currentstring = $token->[2];
775: }
1.72 albertel 776: }
777: }
1.7 albertel 778: }
779: use strict 'refs';
780: }
781: return $currentstring;
1.82 ng 782: }
783:
1.96 albertel 784: sub setup_globals {
1.172 albertel 785: my ($request,$target)=@_;
786: $Apache::lonxml::request=$request;
1.99 albertel 787: $Apache::lonxml::registered = 0;
1.205 www 788: $errorcount=0;
789: $warningcount=0;
1.207 albertel 790: $Apache::lonxml::default_homework_loaded=0;
1.212 albertel 791: $Apache::lonxml::usestyle=1;
1.204 albertel 792: &init_counter();
1.101 albertel 793: @Apache::lonxml::pwd=();
1.124 albertel 794: @Apache::lonxml::extlinks=();
1.96 albertel 795: if ($target eq 'meta') {
796: $Apache::lonxml::redirection = 0;
797: $Apache::lonxml::metamode = 1;
798: $Apache::lonxml::evaluate = 1;
799: $Apache::lonxml::import = 0;
1.129 albertel 800: } elsif ($target eq 'answer') {
801: $Apache::lonxml::redirection = 0;
802: $Apache::lonxml::metamode = 1;
803: $Apache::lonxml::evaluate = 1;
804: $Apache::lonxml::import = 1;
1.96 albertel 805: } elsif ($target eq 'grade') {
806: &startredirection;
807: $Apache::lonxml::metamode = 0;
808: $Apache::lonxml::evaluate = 1;
809: $Apache::lonxml::import = 1;
810: } elsif ($target eq 'modified') {
811: $Apache::lonxml::redirection = 0;
812: $Apache::lonxml::metamode = 0;
813: $Apache::lonxml::evaluate = 0;
814: $Apache::lonxml::import = 0;
815: } elsif ($target eq 'edit') {
816: $Apache::lonxml::redirection = 0;
817: $Apache::lonxml::metamode = 0;
818: $Apache::lonxml::evaluate = 0;
819: $Apache::lonxml::import = 0;
1.163 albertel 820: } elsif ($target eq 'analyze') {
821: $Apache::lonxml::redirection = 0;
822: $Apache::lonxml::metamode = 0;
823: $Apache::lonxml::evaluate = 1;
824: $Apache::lonxml::import = 1;
1.96 albertel 825: } else {
826: $Apache::lonxml::redirection = 0;
827: $Apache::lonxml::metamode = 0;
828: $Apache::lonxml::evaluate = 1;
829: $Apache::lonxml::import = 1;
830: }
831: }
832:
1.82 ng 833: sub init_safespace {
834: my ($target,$safeeval,$safehole,$safeinit) = @_;
835: $safeeval->permit("entereval");
836: $safeeval->permit(":base_math");
837: $safeeval->permit("sort");
838: $safeeval->deny(":base_io");
1.102 albertel 839: $safehole->wrap(\&Apache::scripttag::xmlparse,$safeeval,'&xmlparse');
1.82 ng 840: $safehole->wrap(\&Apache::lonnet::EXT,$safeeval,'&EXT');
841:
842: $safehole->wrap(\&Math::Cephes::asin,$safeeval,'&asin');
843: $safehole->wrap(\&Math::Cephes::acos,$safeeval,'&acos');
844: $safehole->wrap(\&Math::Cephes::atan,$safeeval,'&atan');
845: $safehole->wrap(\&Math::Cephes::sinh,$safeeval,'&sinh');
846: $safehole->wrap(\&Math::Cephes::cosh,$safeeval,'&cosh');
847: $safehole->wrap(\&Math::Cephes::tanh,$safeeval,'&tanh');
848: $safehole->wrap(\&Math::Cephes::asinh,$safeeval,'&asinh');
849: $safehole->wrap(\&Math::Cephes::acosh,$safeeval,'&acosh');
850: $safehole->wrap(\&Math::Cephes::atanh,$safeeval,'&atanh');
851: $safehole->wrap(\&Math::Cephes::erf,$safeeval,'&erf');
852: $safehole->wrap(\&Math::Cephes::erfc,$safeeval,'&erfc');
853: $safehole->wrap(\&Math::Cephes::j0,$safeeval,'&j0');
854: $safehole->wrap(\&Math::Cephes::j1,$safeeval,'&j1');
855: $safehole->wrap(\&Math::Cephes::jn,$safeeval,'&jn');
856: $safehole->wrap(\&Math::Cephes::jv,$safeeval,'&jv');
857: $safehole->wrap(\&Math::Cephes::y0,$safeeval,'&y0');
858: $safehole->wrap(\&Math::Cephes::y1,$safeeval,'&y1');
859: $safehole->wrap(\&Math::Cephes::yn,$safeeval,'&yn');
860: $safehole->wrap(\&Math::Cephes::yv,$safeeval,'&yv');
1.91 ng 861: $safehole->wrap(\&Math::Random::random_beta,$safeeval,'&math_random_beta');
862: $safehole->wrap(\&Math::Random::random_chi_square,$safeeval,'&math_random_chi_square');
863: $safehole->wrap(\&Math::Random::random_exponential,$safeeval,'&math_random_exponential');
864: $safehole->wrap(\&Math::Random::random_f,$safeeval,'&math_random_f');
865: $safehole->wrap(\&Math::Random::random_gamma,$safeeval,'&math_random_gamma');
866: $safehole->wrap(\&Math::Random::random_multivariate_normal,$safeeval,'&math_random_multivariate_normal');
867: $safehole->wrap(\&Math::Random::random_multinomial,$safeeval,'&math_random_multinomial');
868: $safehole->wrap(\&Math::Random::random_noncentral_chi_square,$safeeval,'&math_random_noncentral_chi_square');
869: $safehole->wrap(\&Math::Random::random_noncentral_f,$safeeval,'&math_random_noncentral_f');
870: $safehole->wrap(\&Math::Random::random_normal,$safeeval,'&math_random_normal');
871: $safehole->wrap(\&Math::Random::random_permutation,$safeeval,'&math_random_permutation');
1.93 ng 872: $safehole->wrap(\&Math::Random::random_permuted_index,$safeeval,'&math_random_permuted_index');
1.91 ng 873: $safehole->wrap(\&Math::Random::random_uniform,$safeeval,'&math_random_uniform');
874: $safehole->wrap(\&Math::Random::random_poisson,$safeeval,'&math_random_poisson');
875: $safehole->wrap(\&Math::Random::random_uniform_integer,$safeeval,'&math_random_uniform_integer');
876: $safehole->wrap(\&Math::Random::random_negative_binomial,$safeeval,'&math_random_negative_binomial');
877: $safehole->wrap(\&Math::Random::random_binomial,$safeeval,'&math_random_binomial');
878: $safehole->wrap(\&Math::Random::random_seed_from_phrase,$safeeval,'&random_seed_from_phrase');
879: $safehole->wrap(\&Math::Random::random_set_seed_from_phrase,$safeeval,'&random_set_seed_from_phrase');
880: $safehole->wrap(\&Math::Random::random_get_seed,$safeeval,'&random_get_seed');
881: $safehole->wrap(\&Math::Random::random_set_seed,$safeeval,'&random_set_seed');
882:
1.82 ng 883: #need to inspect this class of ops
884: # $safeeval->deny(":base_orig");
1.91 ng 885: $safeinit .= ';$external::target="'.$target.'";';
1.121 albertel 886: my $rndseed;
1.123 albertel 887: my ($symb,$courseid,$domain,$name) = &Apache::lonxml::whichuser();
888: $rndseed=&Apache::lonnet::rndseed($symb,$courseid,$domain,$name);
1.121 albertel 889: $safeinit .= ';$external::randomseed='.$rndseed.';';
1.82 ng 890: &Apache::run::run($safeinit,$safeeval);
1.207 albertel 891: }
892:
893: sub default_homework_load {
894: my ($safeeval)=@_;
895: &Apache::lonxml::debug('Loading default_homework');
896: my $default=&Apache::lonnet::getfile('/home/httpd/html/res/adm/includes/default_homework.lcpm');
897: if ($default == -1) {
898: &Apache::lonxml::error("<b>Unable to find <i>default_homework.lcpm</i></b>");
899: } else {
900: &Apache::run::run($default,$safeeval);
901: $Apache::lonxml::default_homework_loaded=1;
902: }
1.17 albertel 903: }
904:
1.55 albertel 905: sub startredirection {
906: $Apache::lonxml::redirection++;
907: push (@Apache::lonxml::outputstack, '');
908: }
909:
910: sub endredirection {
911: if (!$Apache::lonxml::redirection) {
1.72 albertel 912: &Apache::lonxml::error("Endredirection was called, before a startredirection, perhaps you have unbalanced tags. Some debuging information:".join ":",caller);
1.55 albertel 913: return '';
914: }
915: $Apache::lonxml::redirection--;
916: pop @Apache::lonxml::outputstack;
1.97 albertel 917: }
918:
919: sub end_tag {
920: my ($tagstack,$parstack,$token)=@_;
921: pop(@$tagstack);
922: pop(@$parstack);
923: &decreasedepth($token);
1.55 albertel 924: }
925:
1.17 albertel 926: sub initdepth {
927: @Apache::lonxml::depthcounter=();
928: $Apache::lonxml::depth=-1;
929: $Apache::lonxml::olddepth=-1;
930: }
931:
932: sub increasedepth {
1.19 albertel 933: my ($token) = @_;
1.17 albertel 934: $Apache::lonxml::depth++;
935: $Apache::lonxml::depthcounter[$Apache::lonxml::depth]++;
936: if ($Apache::lonxml::depthcounter[$Apache::lonxml::depth]==1) {
937: $Apache::lonxml::olddepth=$Apache::lonxml::depth;
938: }
1.42 albertel 939: my $curdepth=join('_',@Apache::lonxml::depthcounter);
1.64 albertel 940: &Apache::lonxml::debug("s $Apache::lonxml::depth : $Apache::lonxml::olddepth : $curdepth : $token->[1]\n");
1.54 albertel 941: #print "<br />s $Apache::lonxml::depth : $Apache::lonxml::olddepth : $curdepth : $token->[1]\n";
1.17 albertel 942: }
943:
944: sub decreasedepth {
1.19 albertel 945: my ($token) = @_;
1.17 albertel 946: $Apache::lonxml::depth--;
1.36 albertel 947: if ($Apache::lonxml::depth<$Apache::lonxml::olddepth-1) {
948: $#Apache::lonxml::depthcounter--;
949: $Apache::lonxml::olddepth=$Apache::lonxml::depth+1;
950: }
1.43 albertel 951: if ( $Apache::lonxml::depth < -1) {
1.140 albertel 952: &Apache::lonxml::warning("Missing tags, unable to properly run file.");
1.43 albertel 953: $Apache::lonxml::depth='-1';
954: }
1.42 albertel 955: my $curdepth=join('_',@Apache::lonxml::depthcounter);
1.64 albertel 956: &Apache::lonxml::debug("e $Apache::lonxml::depth : $Apache::lonxml::olddepth : $token->[1] : $curdepth\n");
1.54 albertel 957: #print "<br />e $Apache::lonxml::depth : $Apache::lonxml::olddepth : $token->[1] : $curdepth\n";
1.1 sakharuk 958: }
1.19 albertel 959:
1.180 albertel 960: sub get_all_text_unbalanced {
1.190 albertel 961: #there is a copy of this in lonpublisher.pm
1.180 albertel 962: my($tag,$pars)= @_;
963: my $token;
964: my $result='';
965: $tag='<'.$tag.'>';
966: while ($token = $$pars[-1]->get_token) {
967: if (($token->[0] eq 'T')||($token->[0] eq 'C')||($token->[0] eq 'D')) {
968: $result.=$token->[1];
969: } elsif ($token->[0] eq 'PI') {
970: $result.=$token->[2];
971: } elsif ($token->[0] eq 'S') {
972: $result.=$token->[4];
973: } elsif ($token->[0] eq 'E') {
974: $result.=$token->[2];
975: }
1.211 albertel 976: if ($result =~ /(.*)\Q$tag\E(.*)/s) {
1.180 albertel 977: &Apache::lonxml::debug('Got a winner with leftovers ::'.$2);
978: &Apache::lonxml::debug('Result is :'.$1);
979: $result=$1;
980: my $redo=$tag.$2;
981: &Apache::lonxml::newparser($pars,\$redo);
982: last;
983: }
984: }
985: return $result
1.204 albertel 986: }
987:
988: sub increment_counter {
989: $Apache::lonxml::counter++;
990: $Apache::lonxml::counter_changed=1;
991: }
992:
993: sub init_counter {
994: if (defined($ENV{'form.counter'})) {
995: $Apache::lonxml::counter=$ENV{'form.counter'};
996: } elsif (not defined($Apache::lonxml::counter)) {
997: $Apache::lonxml::counter=1;
998: &store_counter();
999: }
1000: $Apache::lonxml::counter_changed=0;
1001: }
1002:
1003: sub store_counter {
1004: &Apache::lonnet::appenv(('form.counter' => $Apache::lonxml::counter));
1005: return '';
1.180 albertel 1006: }
1007:
1.19 albertel 1008: sub get_all_text {
1009: my($tag,$pars)= @_;
1.212 albertel 1010: &Apache::lonxml::debug("Got a ".ref($pars));
1011: if (ref($pars) ne 'ARRAY') {
1012: $pars=[$pars];
1013: }
1.19 albertel 1014: my $depth=0;
1015: my $token;
1016: my $result='';
1.57 albertel 1017: if ( $tag =~ m:^/: ) {
1018: my $tag=substr($tag,1);
1.212 albertel 1019: #&Apache::lonxml::debug("have:$tag:");
1020: while (($depth >=0) && ($#$pars > -1)) {
1021: while (($depth >=0) && ($token = $$pars[-1]->get_token)) {
1022: #&Apache::lonxml::debug("e token:$token->[0]:$depth:$token->[1]:".$#$pars.":".$#Apache::lonxml::pwd);
1023: if (($token->[0] eq 'T')||($token->[0] eq 'C')||($token->[0] eq 'D')) {
1024: $result.=$token->[1];
1025: } elsif ($token->[0] eq 'PI') {
1026: $result.=$token->[2];
1027: } elsif ($token->[0] eq 'S') {
1028: if ($token->[1] =~ /^$tag$/i) { $depth++; }
1029: $result.=$token->[4];
1030: } elsif ($token->[0] eq 'E') {
1031: if ( $token->[1] =~ /^$tag$/i) { $depth--; }
1032: #skip sending back the last end tag
1033: if ($depth > -1) { $result.=$token->[2]; } else {
1034: $$pars[-1]->unget_token($token);
1035: }
1.57 albertel 1036: }
1037: }
1.212 albertel 1038: if (($depth >=0) && ($#$pars > 0) ) {
1039: pop(@$pars);
1040: pop(@Apache::lonxml::pwd);
1041: }
1.57 albertel 1042: }
1043: } else {
1.212 albertel 1044: while ($#$pars > -1) {
1045: while ($token = $$pars[-1]->get_token) {
1046: #&Apache::lonxml::debug("s token:$token->[0]:$depth:$token->[1]");
1047: if (($token->[0] eq 'T')||($token->[0] eq 'C')||
1048: ($token->[0] eq 'D')) {
1049: $result.=$token->[1];
1050: } elsif ($token->[0] eq 'PI') {
1051: $result.=$token->[2];
1052: } elsif ($token->[0] eq 'S') {
1053: if ( $token->[1] =~ /^$tag$/i) {
1054: $$pars[-1]->unget_token($token); last;
1055: } else {
1056: $result.=$token->[4];
1057: }
1058: } elsif ($token->[0] eq 'E') {
1059: $result.=$token->[2];
1060: }
1061: }
1062: if (($#$pars > 0) ) {
1063: pop(@$pars);
1064: pop(@Apache::lonxml::pwd);
1065: } else { last; }
1.36 albertel 1066: }
1.19 albertel 1067: }
1.212 albertel 1068: if ($result =~ m|<LONCAPA_INTERNAL_TURN_STYLE_ON />|) {
1069: $Apache::lonxml::usestyle=1;
1070: }
1071: #&Apache::lonxml::debug("Exit:$result:");
1.19 albertel 1072: return $result
1073: }
1074:
1.23 albertel 1075: sub newparser {
1076: my ($parser,$contentref,$dir) = @_;
1.167 albertel 1077: push (@$parser,HTML::LCParser->new($contentref));
1.56 albertel 1078: $$parser['-1']->xml_mode('1');
1.23 albertel 1079: if ( $dir eq '' ) {
1080: push (@Apache::lonxml::pwd, $Apache::lonxml::pwd[$#Apache::lonxml::pwd]);
1081: } else {
1082: push (@Apache::lonxml::pwd, $dir);
1083: }
1084: # &Apache::lonxml::debug("pwd:$#Apache::lonxml::pwd");
1085: # &Apache::lonxml::debug("pwd:$Apache::lonxml::pwd[$#Apache::lonxml::pwd]");
1086: }
1.1 sakharuk 1087:
1.8 albertel 1088: sub parstring {
1089: my ($token) = @_;
1090: my $temp='';
1.142 albertel 1091: foreach (@{$token->[3]}) {
1.35 www 1092: unless ($_=~/\W/) {
1.42 albertel 1093: my $val=$token->[2]->{$_};
1.150 albertel 1094: $val =~ s/([\%\@\\\"])/\\$1/g;
1.51 albertel 1095: #if ($val =~ m/^[\%\@]/) { $val="\\".$val; }
1.42 albertel 1096: $temp .= "my \$$_=\"$val\";"
1.20 albertel 1097: }
1.142 albertel 1098: }
1.8 albertel 1099: return $temp;
1100: }
1.22 albertel 1101:
1.34 www 1102: sub writeallows {
1.126 www 1103: unless ($#extlinks>=0) { return; }
1.34 www 1104: my $thisurl='/res/'.&Apache::lonnet::declutter(shift);
1.111 www 1105: if ($ENV{'httpref.'.$thisurl}) {
1106: $thisurl=$ENV{'httpref.'.$thisurl};
1107: }
1.34 www 1108: my $thisdir=$thisurl;
1109: $thisdir=~s/\/[^\/]+$//;
1110: my %httpref=();
1.142 albertel 1111: foreach (@extlinks) {
1.34 www 1112: $httpref{'httpref.'.
1.125 www 1113: &Apache::lonnet::hreflocation($thisdir,$_)}=$thisurl;
1.142 albertel 1114: }
1.126 www 1115: @extlinks=();
1.34 www 1116: &Apache::lonnet::appenv(%httpref);
1117: }
1118:
1.66 www 1119: #
1120: # Afterburner handles anchors, highlights and links
1121: #
1122: sub afterburn {
1123: my $result=shift;
1.154 albertel 1124: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
1125: ['highlight','anchor','link']);
1.66 www 1126: if ($ENV{'form.highlight'}) {
1.142 albertel 1127: foreach (split(/\,/,$ENV{'form.highlight'})) {
1.66 www 1128: my $anchorname=$_;
1129: my $matchthis=$anchorname;
1130: $matchthis=~s/\_+/\\s\+/g;
1131: $result=~s/($matchthis)/\<font color=\"red\"\>$1\<\/font\>/gs;
1.142 albertel 1132: }
1.66 www 1133: }
1134: if ($ENV{'form.link'}) {
1.142 albertel 1135: foreach (split(/\,/,$ENV{'form.link'})) {
1.66 www 1136: my ($anchorname,$linkurl)=split(/\>/,$_);
1137: my $matchthis=$anchorname;
1138: $matchthis=~s/\_+/\\s\+/g;
1139: $result=~s/($matchthis)/\<a href=\"$linkurl\"\>$1\<\/a\>/gs;
1.142 albertel 1140: }
1.66 www 1141: }
1142: if ($ENV{'form.anchor'}) {
1143: my $anchorname=$ENV{'form.anchor'};
1144: my $matchthis=$anchorname;
1145: $matchthis=~s/\_+/\\s\+/g;
1146: $result=~s/($matchthis)/\<a name=\"$anchorname\"\>$1\<\/a\>/s;
1147: $result.=(<<"ENDSCRIPT");
1148: <script>
1149: document.location.hash='$anchorname';
1150: </script>
1151: ENDSCRIPT
1152: }
1153: return $result;
1154: }
1155:
1.79 www 1156: sub storefile {
1157: my ($file,$contents)=@_;
1158: if (my $fh=Apache::File->new('>'.$file)) {
1159: print $fh $contents;
1160: $fh->close();
1.147 albertel 1161: } else {
1162: &warning("Unable to save file $file");
1.79 www 1163: }
1164: }
1165:
1.151 albertel 1166: sub createnewhtml {
1167: my $filecontents=(<<SIMPLECONTENT);
1.78 www 1168: <html>
1169: <head>
1170: <title>
1171: Title of Document Goes Here
1172: </title>
1173: </head>
1174: <body bgcolor="#FFFFFF">
1175:
1176: Body of Document Goes Here
1177:
1178: </body>
1179: </html>
1180: SIMPLECONTENT
1.151 albertel 1181: return $filecontents;
1182: }
1183:
1.147 albertel 1184:
1.151 albertel 1185: sub inserteditinfo {
1186: my ($result,$filecontents)=@_;
1.157 albertel 1187: $filecontents = &HTML::Entities::encode($filecontents);
1.147 albertel 1188: # my $editheader='<a href="#editsection">Edit below</a><hr />';
1.161 albertel 1189: my $buttons=(<<BUTTONS);
1190: <input type="submit" name="attemptclean"
1191: value="Save and then attempt to clean HTML" />
1192: <input type="submit" name="savethisfile" value="Save this" />
1193: <input type="submit" name="viewmode" value="View" />
1194: BUTTONS
1.78 www 1195: my $editfooter=(<<ENDFOOTER);
1196: <hr />
1197: <a name="editsection" />
1198: <form method="post">
1.161 albertel 1199: <input type="hidden" name="editmode" value="Edit" />
1.170 www 1200: $buttons<br />
1.78 www 1201: <textarea cols="80" rows="40" name="filecont">$filecontents</textarea>
1.170 www 1202: <br />$buttons
1.78 www 1203: <br />
1204: </form>
1205: ENDFOOTER
1.147 albertel 1206: # $result=~s/(\<body[^\>]*\>)/$1$editheader/is;
1.78 www 1207: $result=~s/(\<\/body\>)/$editfooter/is;
1208: return $result;
1209: }
1210:
1.152 albertel 1211: sub get_target {
1212: my $viewgrades=&Apache::lonnet::allowed('vgr',$ENV{'request.course.id'});
1213: if ( $ENV{'request.state'} eq 'published') {
1214: if ( defined($ENV{'form.grade_target'})
1215: && ($viewgrades == 'F' )) {
1216: return ($ENV{'form.grade_target'});
1.153 albertel 1217: } elsif (defined($ENV{'form.grade_target'})) {
1218: if (($ENV{'form.grade_target'} eq 'web') ||
1219: ($ENV{'form.grade_target'} eq 'tex') ) {
1220: return $ENV{'form.grade_target'}
1221: } else {
1222: return 'web';
1223: }
1.152 albertel 1224: } else {
1225: return 'web';
1226: }
1227: } elsif ($ENV{'request.state'} eq 'construct') {
1228: if ( defined($ENV{'form.grade_target'})) {
1229: return ($ENV{'form.grade_target'});
1230: } else {
1231: return 'web';
1232: }
1233: } else {
1234: return 'web';
1235: }
1236: }
1237:
1.24 sakharuk 1238: sub handler {
1239: my $request=shift;
1.68 www 1240:
1.152 albertel 1241: my $target=&get_target();
1.68 www 1242:
1.65 albertel 1243: $Apache::lonxml::debug=0;
1.68 www 1244:
1.25 sakharuk 1245: if ($ENV{'browser.mathml'}) {
1.27 albertel 1246: $request->content_type('text/xml');
1247: } else {
1248: $request->content_type('text/html');
1.25 sakharuk 1249: }
1.141 albertel 1250: &Apache::loncommon::no_cache($request);
1.27 albertel 1251: $request->send_http_header;
1.141 albertel 1252:
1.45 www 1253: return OK if $request->header_only;
1.27 albertel 1254:
1.79 www 1255:
1256: my $file=&Apache::lonnet::filelocation("",$request->uri);
1.78 www 1257: #
1258: # Edit action? Save file.
1259: #
1260: unless ($ENV{'request.state'} eq 'published') {
1.107 www 1261: if (($ENV{'form.savethisfile'}) || ($ENV{'form.attemptclean'})) {
1.79 www 1262: &storefile($file,$ENV{'form.filecont'});
1.78 www 1263: }
1264: }
1.24 sakharuk 1265: my %mystyle;
1.147 albertel 1266: my $result = '';
1.50 albertel 1267: my $filecontents=&Apache::lonnet::getfile($file);
1268: if ($filecontents == -1) {
1.78 www 1269: $result=(<<ENDNOTFOUND);
1270: <html>
1271: <head>
1272: <title>File not found</title>
1273: </head>
1274: <body bgcolor="#FFFFFF">
1275: <b>File not found: $file</b>
1276: </body>
1277: </html>
1278: ENDNOTFOUND
1.50 albertel 1279: $filecontents='';
1.151 albertel 1280: if ($ENV{'request.state'} ne 'published') {
1281: $filecontents=&createnewhtml();
1.161 albertel 1282: $ENV{'form.editmode'}='Edit'; #force edit mode
1.151 albertel 1283: }
1.50 albertel 1284: } else {
1.147 albertel 1285: unless ($ENV{'request.state'} eq 'published') {
1286: if ($ENV{'form.attemptclean'}) {
1287: $filecontents=&htmlclean($filecontents,1);
1.107 www 1288: }
1.147 albertel 1289: }
1.161 albertel 1290: if (!$ENV{'form.editmode'} || $ENV{'form.viewmode'}) {
1.172 albertel 1291: $result = &Apache::lonxml::xmlparse($request,$target,$filecontents,
1292: '',%mystyle);
1.147 albertel 1293: }
1.78 www 1294: }
1295:
1296: #
1297: # Edit action? Insert editing commands
1298: #
1299: unless ($ENV{'request.state'} eq 'published') {
1.161 albertel 1300: if ($ENV{'form.editmode'} && (!($ENV{'form.viewmode'}))) {
1.177 www 1301: my $displayfile=$request->uri;
1302: $displayfile=~s/^\/[^\/]*//;
1303: $result='<html><body bgcolor="#FFFFFF"><h3>'.$displayfile.
1304: '</h3></body></html>';
1.78 www 1305: $result=&inserteditinfo($result,$filecontents);
1.147 albertel 1306: }
1.66 www 1307: }
1.147 albertel 1308:
1.126 www 1309: writeallows($request->uri);
1.50 albertel 1310:
1.67 www 1311: $request->print($result);
1.64 albertel 1312:
1.45 www 1313: return OK;
1.24 sakharuk 1314: }
1.147 albertel 1315:
1.22 albertel 1316: sub debug {
1317: if ($Apache::lonxml::debug eq 1) {
1.146 albertel 1318: $|=1;
1.202 albertel 1319: print('<font size="-2"<pre>DEBUG:'.&HTML::Entities::encode($_[0])."</pre></font>\n");
1.22 albertel 1320: }
1321: }
1.49 albertel 1322:
1.22 albertel 1323: sub error {
1.205 www 1324: $errorcount++;
1.74 albertel 1325: if (($Apache::lonxml::debug eq 1) || ($ENV{'request.state'} eq 'construct') ) {
1.166 matthew 1326: # If printing in construction space, put the error inside <pre></pre>
1.167 albertel 1327: print "<b>ERROR:</b>".join("\n",@_)."\n";
1.52 albertel 1328: } else {
1329: print "<b>An Error occured while processing this resource. The instructor has been notified.</b> <br />";
1330: #notify author
1.146 albertel 1331: &Apache::lonmsg::author_res_msg($ENV{'request.filename'},join('<br />',@_));
1.52 albertel 1332: #notify course
1333: if ( $ENV{'request.course.id'} ) {
1.209 www 1334: my (undef,%users)=&Apache::lonfeedback::decide_receiver(undef,0,1,1,1);
1.143 www 1335: my $declutter=&Apache::lonnet::declutter($ENV{'request.filename'});
1.209 www 1336: foreach (keys %users) {
1337: my ($user,$domain) = split(/:/, $_);
1.143 www 1338: &Apache::lonmsg::user_normal_msg($user,$domain,
1.146 albertel 1339: "Error [$declutter]",join('<br />',@_));
1.52 albertel 1340: }
1341: }
1.74 albertel 1342:
1.52 albertel 1343: #FIXME probably shouldn't have me get everything forever.
1.146 albertel 1344: &Apache::lonmsg::user_normal_msg('albertel','msu',"Error in $ENV{'request.filename'}",join('<br />',@_));
1.74 albertel 1345: #&Apache::lonmsg::user_normal_msg('albertel','103',"Error in $ENV{'request.filename'}",$_[0]);
1.52 albertel 1346: }
1.22 albertel 1347: }
1.49 albertel 1348:
1.22 albertel 1349: sub warning {
1.205 www 1350: $warningcount++;
1.73 harris41 1351: if ($ENV{'request.state'} eq 'construct') {
1.146 albertel 1352: print "<b>W</b>ARNING<b>:</b>".join('<br />',@_)."<br />\n";
1.73 harris41 1353: }
1.83 albertel 1354: }
1355:
1356: sub get_param {
1.213 ! albertel 1357: my ($param,$parstack,$safeeval,$context,$case_insensitive) = @_;
! 1358: if ( ! $context ) { $context = -1; }
! 1359: my $args ='';
! 1360: if ( $#$parstack > (-2-$context) ) { $args=$$parstack[$context]; }
! 1361: if ( ! $args ) { return undef; }
! 1362: if ( $case_insensitive ) {
! 1363: if ($args =~ s/(my \$)(\Q$param\E)(=\")/$1.lc($2).$3/ei) {
! 1364: return &Apache::run::run("{$args;".'return $'.$param.'}',
! 1365: $safeeval); #'
! 1366: } else {
! 1367: return undef;
! 1368: }
! 1369: } else {
! 1370: if ( $args =~ /my \$\Q$param\E=\"/ ) {
! 1371: return &Apache::run::run("{$args;".'return $'.$param.'}',
! 1372: $safeeval); #'
! 1373: } else {
! 1374: return undef;
! 1375: }
! 1376: }
1.22 albertel 1377: }
1378:
1.132 albertel 1379: sub get_param_var {
1.213 ! albertel 1380: my ($param,$parstack,$safeeval,$context,$case_insensitive) = @_;
1.132 albertel 1381: if ( ! $context ) { $context = -1; }
1382: my $args ='';
1383: if ( $#$parstack > (-2-$context) ) { $args=$$parstack[$context]; }
1.213 ! albertel 1384: if ($case_insensitive) {
! 1385: if (! ($args=~s/(my \$)(\Q$param\E)(=\")/$1.lc($2).$3/ei)) {
! 1386: return undef;
! 1387: }
! 1388: } elsif ( $args !~ /my \$\Q$param\E=\"/ ) { return undef; }
1.132 albertel 1389: my $value=&Apache::run::run("{$args;".'return $'.$param.'}',$safeeval); #'
1390: if ($value =~ /^[\$\@\%]/) {
1391: return &Apache::run::run("return $value",$safeeval,1);
1392: } else {
1393: return $value;
1394: }
1395: }
1396:
1.74 albertel 1397: sub register_insert {
1.75 albertel 1398: my @data = split /\n/, &Apache::lonnet::getfile('/home/httpd/lonTabs/insertlist.tab');
1.74 albertel 1399: my $i;
1.76 albertel 1400: my $tagnum=0;
1.74 albertel 1401: my @order;
1402: for ($i=0;$i < $#data; $i++) {
1403: my $line = $data[$i];
1404: if ( $line =~ /^\#/ || $line =~ /^\s*\n/) { next; }
1405: if ( $line =~ /TABLE/ ) { last; }
1.92 albertel 1406: my ($tag,$descrip,$color,$function,$show) = split(/,/, $line);
1.135 albertel 1407: if ($tag) {
1408: $insertlist{"$tagnum.tag"} = $tag;
1409: $insertlist{"$tagnum.description"} = $descrip;
1410: $insertlist{"$tagnum.color"} = $color;
1411: $insertlist{"$tagnum.function"} = $function;
1412: if (!defined($show)) { $show='yes'; }
1413: $insertlist{"$tagnum.show"}= $show;
1414: $insertlist{"$tag.num"}=$tagnum;
1415: $tagnum++;
1416: }
1.74 albertel 1417: }
1.76 albertel 1418: $i++; #skipping TABLE line
1419: $tagnum = 0;
1.74 albertel 1420: for (;$i < $#data;$i++) {
1421: my $line = $data[$i];
1.76 albertel 1422: my ($mnemonic,@which) = split(/ +/,$line);
1423: my $tag = $insertlist{"$tagnum.tag"};
1.144 matthew 1424: for (my $j=0;$j <=$#which;$j++) {
1.74 albertel 1425: if ( $which[$j] eq 'Y' ) {
1.76 albertel 1426: if ($insertlist{"$j.show"} ne 'no') {
1427: push(@{ $insertlist{"$tag.which"} },$j);
1428: }
1.74 albertel 1429: }
1430: }
1.76 albertel 1431: $tagnum++;
1.74 albertel 1432: }
1433: }
1.98 albertel 1434:
1435: sub description {
1436: my ($token)=@_;
1.138 albertel 1437: my $tagnum;
1438: my $tag=$token->[1];
1439: foreach my $namespace (reverse @Apache::lonxml::namespace) {
1440: my $testtag=$namespace.'::'.$tag;
1441: $tagnum=$insertlist{"$testtag.num"};
1442: if (defined($tagnum)) { last; }
1443: }
1444: if (!defined ($tagnum)) { $tagnum=$Apache::lonxml::insertlist{"$tag.num"}; }
1445: return $insertlist{$tagnum.'.description'};
1.98 albertel 1446: }
1.123 albertel 1447:
1448: # ----------------------------------------------------------------- whichuser
1449: # returns a list of $symb, $courseid, $domain, $name that is correct for
1450: # calls to lonnet functions for this setup.
1451: # - looks for form.grade_ parameters
1452: sub whichuser {
1.134 albertel 1453: my ($symb,$courseid,$domain,$name);
1.123 albertel 1454: if (defined($ENV{'form.grade_symb'})) {
1455: my $tmp_courseid=$ENV{'form.grade_courseid'};
1456: my $allowed=&Apache::lonnet::allowed('mgr',$tmp_courseid);
1457: if ($allowed) {
1458: $symb=$ENV{'form.grade_symb'};
1459: $courseid=$ENV{'form.grade_courseid'};
1460: $domain=$ENV{'form.grade_domain'};
1461: $name=$ENV{'form.grade_username'};
1462: }
1.134 albertel 1463: } else {
1464: $symb=&Apache::lonnet::symbread();
1465: $courseid=$ENV{'request.course.id'};
1466: $domain=$ENV{'user.domain'};
1467: $name=$ENV{'user.name'};
1.123 albertel 1468: }
1469: return ($symb,$courseid,$domain,$name);
1470: }
1471:
1.1 sakharuk 1472: 1;
1473: __END__
1.68 www 1474:
1475:
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