Annotation of loncom/xml/lonxml.pm, revision 1.163
1.2 sakharuk 1: # The LearningOnline Network with CAPA
1.3 sakharuk 2: # XML Parser Module
1.2 sakharuk 3: #
1.163 ! albertel 4: # $Id: lonxml.pm,v 1.162 2002/03/25 20:06:08 matthew Exp $
1.139 www 5: #
6: # Copyright Michigan State University Board of Trustees
7: #
8: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
9: #
10: # LON-CAPA is free software; you can redistribute it and/or modify
11: # it under the terms of the GNU General Public License as published by
12: # the Free Software Foundation; either version 2 of the License, or
13: # (at your option) any later version.
14: #
15: # LON-CAPA is distributed in the hope that it will be useful,
16: # but WITHOUT ANY WARRANTY; without even the implied warranty of
17: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18: # GNU General Public License for more details.
19: #
20: # You should have received a copy of the GNU General Public License
21: # along with LON-CAPA; if not, write to the Free Software
22: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23: #
24: # /home/httpd/html/adm/gpl.txt
25: #
26: # http://www.lon-capa.org/
27: #
28: # Copyright for TtHfunc and TtMfunc by Ian Hutchinson.
29: # TtHfunc and TtMfunc (the "Code") may be compiled and linked into
30: # binary executable programs or libraries distributed by the
31: # Michigan State University (the "Licensee"), but any binaries so
32: # distributed are hereby licensed only for use in the context
33: # of a program or computational system for which the Licensee is the
34: # primary author or distributor, and which performs substantial
35: # additional tasks beyond the translation of (La)TeX into HTML.
36: # The C source of the Code may not be distributed by the Licensee
37: # to any other parties under any circumstances.
38: #
1.3 sakharuk 39: # last modified 06/26/00 by Alexander Sakharuk
1.33 www 40: # 11/6 Gerd Kortemeyer
1.45 www 41: # 6/1/1 Gerd Kortemeyer
1.56 albertel 42: # 2/21,3/13 Guy
1.68 www 43: # 3/29,5/4 Gerd Kortemeyer
1.73 harris41 44: # 5/10 Scott Harrison
1.78 www 45: # 5/26 Gerd Kortemeyer
1.80 harris41 46: # 5/27 H. K. Ng
1.89 www 47: # 6/2,6/3,6/8,6/9 Gerd Kortemeyer
1.93 ng 48: # 6/12,6/13 H. K. Ng
1.95 www 49: # 6/16 Gerd Kortemeyer
1.104 ng 50: # 7/27 H. K. Ng
1.127 www 51: # 8/7,8/9,8/10,8/11,8/15,8/16,8/17,8/18,8/20,8/23,8/24 Gerd Kortemeyer
1.130 www 52: # Guy Albertelli
53: # 9/26 Gerd Kortemeyer
1.143 www 54: # Dec Guy Albertelli
55: # YEAR=2002
56: # 1/1 Gerd Kortemeyer
1.145 www 57: # 1/2 Matthew Hall
58: # 1/3 Gerd Kortemeyer
1.143 www 59: #
1.2 sakharuk 60:
1.4 albertel 61: package Apache::lonxml;
1.33 www 62: use vars
1.76 albertel 63: qw(@pwd @outputstack $redirection $import @extlinks $metamode $evaluate %insertlist @namespace);
1.1 sakharuk 64: use strict;
1.161 albertel 65: use HTML::TokeParser();
66: use HTML::TreeBuilder();
67: use HTML::Entities();
68: use Safe();
69: use Safe::Hole();
70: use Math::Cephes();
71: use Math::Random();
72: use Opcode();
1.72 albertel 73:
74: sub register {
1.141 albertel 75: my ($space,@taglist) = @_;
76: foreach my $temptag (@taglist) {
77: push(@{ $Apache::lonxml::alltags{$temptag} },$space);
1.72 albertel 78: }
79: }
80:
1.141 albertel 81: sub deregister {
82: my ($space,@taglist) = @_;
83: foreach my $temptag (@taglist) {
84: my $tempspace = $Apache::lonxml::alltags{$temptag}[-1];
85: if ($tempspace eq $space) {
86: pop(@{ $Apache::lonxml::alltags{$temptag} });
87: }
88: }
1.142 albertel 89: #&printalltags();
1.141 albertel 90: }
91:
1.46 www 92: use Apache::Constants qw(:common);
1.161 albertel 93: use Apache::lontexconvert();
94: use Apache::style();
95: use Apache::run();
96: use Apache::londefdef();
97: use Apache::scripttag();
98: use Apache::edit();
99: use Apache::lonnet();
100: use Apache::File();
101: use Apache::loncommon();
1.79 www 102:
1.72 albertel 103: #================================================== Main subroutine: xmlparse
104: #debugging control, to turn on debugging modify the correct handler
105: $Apache::lonxml::debug=0;
106:
107: #path to the directory containing the file currently being processed
108: @pwd=();
109:
110: #these two are used for capturing a subset of the output for later processing,
111: #don't touch them directly use &startredirection and &endredirection
112: @outputstack = ();
113: $redirection = 0;
114:
115: #controls wheter the <import> tag actually does
116: $import = 1;
117: @extlinks=();
118:
119: # meta mode is a bit weird only some output is to be turned off
120: #<output> tag turns metamode off (defined in londefdef.pm)
121: $metamode = 0;
122:
123: # turns on and of run::evaluate actually derefencing var refs
124: $evaluate = 1;
1.7 albertel 125:
1.74 albertel 126: # data structure for eidt mode, determines what tags can go into what other tags
127: %insertlist=();
1.68 www 128:
1.99 albertel 129: # stores the list of active tag namespaces
1.76 albertel 130: @namespace=();
131:
1.99 albertel 132: # has the dynamic menu been updated to know about this resource
133: $Apache::lonxml::registered=0;
134:
1.68 www 135: sub xmlbegin {
136: my $output='';
137: if ($ENV{'browser.mathml'}) {
138: $output='<?xml version="1.0"?>'
139: .'<?xml-stylesheet type="text/css" href="/adm/MathML/mathml.css"?>'
140: .'<!DOCTYPE html SYSTEM "/adm/MathML/mathml.dtd" '
141: .'[<!ENTITY mathns "http://www.w3.org/1998/Math/MathML">]>'
142: .'<html xmlns:math="http://www.w3.org/1998/Math/MathML" '
143: .'xmlns="http://www.w3.org/TR/REC-html40">';
144: } else {
145: $output='<html>';
146: }
147: return $output;
148: }
149:
150: sub xmlend {
1.103 www 151: my $discussion='';
152: if ($ENV{'request.course.id'}) {
1.109 www 153: my $crs='/'.$ENV{'request.course.id'};
154: if ($ENV{'request.course.sec'}) {
155: $crs.='_'.$ENV{'request.course.sec'};
156: }
157: $crs=~s/\_/\//g;
158: my $seeid=&Apache::lonnet::allowed('rin',$crs);
1.103 www 159: my $symb=&Apache::lonnet::symbread();
160: if ($symb) {
161: my %contrib=&Apache::lonnet::restore($symb,$ENV{'request.course.id'},
162: $ENV{'course.'.$ENV{'request.course.id'}.'.domain'},
163: $ENV{'course.'.$ENV{'request.course.id'}.'.num'});
164: if ($contrib{'version'}) {
165: $discussion.=
166: '<address><hr /><h2>Course Discussion of Resource</h2>';
167: my $idx;
168: for ($idx=1;$idx<=$contrib{'version'};$idx++) {
1.110 www 169: my $hidden=($contrib{'hidden'}=~/\.$idx\./);
170: unless (($hidden) && (!$seeid)) {
171: my $message=$contrib{$idx.':message'};
172: $message=~s/\n/\<br \/\>/g;
173: if ($message) {
174: if ($hidden) {
175: $message='<font color="#888888">'.$message.'</font>';
176: }
1.109 www 177: my $sender='Anonymous';
178: if ((!$contrib{$idx.':anonymous'}) || ($seeid)) {
179: $sender=$contrib{$idx.':sendername'}.' at '.
180: $contrib{$idx.':senderdomain'};
181: if ($contrib{$idx.':anonymous'}) {
182: $sender.=' (anonymous)';
1.110 www 183: }
184: if ($seeid) {
185: if ($hidden) {
186: $sender.=' <a href="/adm/feedback?unhide='.
187: $symb.':::'.$idx.'">Make Visible</a>';
188: } else {
189: $sender.=' <a href="/adm/feedback?hide='.
190: $symb.':::'.$idx.'">Hide</a>';
191: }
1.109 www 192: }
193: }
194: $discussion.='<p><b>'.$sender.'</b> ('.
1.103 www 195: localtime($contrib{$idx.':timestamp'}).
196: '):<blockquote>'.$message.
1.110 www 197: '</blockquote></p>';
198: }
199: }
1.103 www 200: }
201: $discussion.='</address>';
202: }
203: }
204: }
205: return $discussion.'</html>';
1.119 www 206: }
207:
208: sub tokeninputfield {
1.120 www 209: my $defhost=$Apache::lonnet::perlvar{'lonHostID'};
210: $defhost=~tr/a-z/A-Z/;
1.119 www 211: return (<<ENDINPUTFIELD)
1.120 www 212: <script>
213: function updatetoken() {
214: var comp=new Array;
215: var barcode=unescape(document.tokeninput.barcode.value);
216: comp=barcode.split('*');
217: if (typeof(comp[0])!="undefined") {
218: document.tokeninput.codeone.value=comp[0];
219: }
220: if (typeof(comp[1])!="undefined") {
221: document.tokeninput.codetwo.value=comp[1];
222: }
223: if (typeof(comp[2])!="undefined") {
224: comp[2]=comp[2].toUpperCase();
225: document.tokeninput.codethree.value=comp[2];
226: }
227: document.tokeninput.barcode.value='';
228: }
229: </script>
230: <form method="post" name="tokeninput">
1.119 www 231: <table border="2" bgcolor="#FFFFBB">
232: <tr><th>DocID Checkin</th></tr>
233: <tr><td>
234: <table>
235: <tr>
236: <td>Scan in Barcode</td>
1.120 www 237: <td><input type="text" size="22" name="barcode"
238: onChange="updatetoken()"/></td>
1.119 www 239: </tr>
240: <tr><td><i>or</i> Type in DocID</td>
241: <td>
242: <input type="text" size="5" name="codeone" />
1.120 www 243: <b><font size="+2">*</font></b>
1.119 www 244: <input type="text" size="5" name="codetwo" />
1.120 www 245: <b><font size="+2">*</font></b>
246: <input type="text" size="10" name="codethree" value="$defhost"
247: onChange="this.value=this.value.toUpperCase()" />
1.119 www 248: </td></tr>
249: </table>
250: </td></tr>
251: <tr><td><input type="submit" value="Check in DocID" /></td></tr>
252: </table>
253: </form>
254: ENDINPUTFIELD
1.112 www 255: }
256:
1.116 www 257: sub maketoken {
1.118 www 258: my ($symb,$tuname,$tudom,$tcrsid)=@_;
1.112 www 259: unless ($symb) {
260: $symb=&Apache::lonnet::symbread();
261: }
262: unless ($tuname) {
263: $tuname=$ENV{'user.name'};
264: $tudom=$ENV{'user.domain'};
265: $tcrsid=$ENV{'request.course.id'};
266: }
1.116 www 267:
1.118 www 268: return &Apache::lonnet::checkout($symb,$tuname,$tudom,$tcrsid);
269: }
270:
271: sub printtokenheader {
1.133 albertel 272: my ($target,$token,$tsymb,$tcrsid,$tudom,$tuname)=@_;
1.116 www 273: unless ($token) { return ''; }
1.118 www 274:
1.133 albertel 275: my ($symb,$courseid,$domain,$name) = &Apache::lonxml::whichuser();
276: unless ($tsymb) {
277: $tsymb=$symb;
1.118 www 278: }
279: unless ($tuname) {
1.133 albertel 280: $tuname=$name;
281: $tudom=$domain;
282: $tcrsid=$courseid;
1.118 www 283: }
1.114 www 284:
285: my %reply=&Apache::lonnet::get('environment',
286: ['firstname','middlename','lastname','generation'],
287: $tudom,$tuname);
288: my $plainname=$reply{'firstname'}.' '.
289: $reply{'middlename'}.' '.
290: $reply{'lastname'}.' '.
291: $reply{'generation'};
292:
1.112 www 293: if ($target eq 'web') {
1.145 www 294: my %idhash=&Apache::lonnet::idrget($tudom,($tuname));
1.115 www 295: return
296: '<img align="right" src="/cgi-bin/barcode.gif?encode='.$token.'" />'.
297: 'Checked out for '.$plainname.
1.114 www 298: '<br />User: '.$tuname.' at '.$tudom.
1.145 www 299: '<br />ID: '.$idhash{$tuname}.
1.117 www 300: '<br />CourseID: '.$tcrsid.
1.145 www 301: '<br />Course: '.$ENV{'course.'.$tcrsid.'.description'}.
1.114 www 302: '<br />DocID: '.$token.
1.116 www 303: '<br />Time: '.localtime().'<hr />';
1.112 www 304: } else {
1.121 albertel 305: return $token;
1.112 www 306: }
1.68 www 307: }
308:
1.70 www 309: sub fontsettings() {
310: my $headerstring='';
311: if (($ENV{'browser.os'} eq 'mac') && (!$ENV{'browser.mathml'})) {
312: $headerstring.=
313: '<meta Content-Type="text/html; charset=x-mac-roman">';
314: }
315: return $headerstring;
316: }
317:
1.68 www 318: sub registerurl {
1.100 www 319: my $forcereg=shift;
1.155 matthew 320: my $target = shift;
321: my $result = '';
1.160 www 322: if (($ENV{'request.publicaccess'}) ||
323: ($ENV{'REQUEST_URI'} eq '/res/adm/pages/menu.html')) {
1.130 www 324: return
325: '<script>function LONCAPAreg(){} function LONCAPAstale(){}</script>';
326: }
1.128 albertel 327: if ($Apache::lonxml::registered && !$forcereg) { return ''; }
1.105 albertel 328: $Apache::lonxml::registered=1;
1.159 www 329: my $nothing='';
330: if ($ENV{'browser.type'} eq 'explorer') { $nothing='javascript:void(0);'; }
1.100 www 331: if (($ENV{'REQUEST_URI'}!~/^\/(res\/)*adm\//) || ($forcereg)) {
1.87 www 332: my $hwkadd='';
333: if ($ENV{'REQUEST_URI'}=~/\.(problem|exam|quiz|assess|survey|form)$/) {
334: if (&Apache::lonnet::allowed('vgr',$ENV{'request.course.id'})) {
335: $hwkadd.=(<<ENDSUBM);
336: menu.switchbutton
337: (7,1,'subm.gif','view sub','missions',
1.88 www 338: 'gocmd("/adm/grades","submission")');
1.87 www 339: ENDSUBM
340: }
341: if (&Apache::lonnet::allowed('mgr',$ENV{'request.course.id'})) {
342: $hwkadd.=(<<ENDGRDS);
343: menu.switchbutton
344: (7,2,'pgrd.gif','problem','grades',
1.88 www 345: 'gocmd("/adm/grades","viewgrades")');
1.87 www 346: ENDGRDS
347: }
348: if (&Apache::lonnet::allowed('opa',$ENV{'request.course.id'})) {
349: $hwkadd.=(<<ENDPARM);
350: menu.switchbutton
351: (7,3,'pparm.gif','problem','parms',
1.88 www 352: 'gocmd("/adm/parmset","set")');
1.87 www 353: ENDPARM
354: }
355: }
1.155 matthew 356: $result = (<<ENDREGTHIS);
1.87 www 357:
1.68 www 358: <script language="JavaScript">
1.71 www 359: // BEGIN LON-CAPA Internal
1.86 www 360:
1.69 www 361: function LONCAPAreg() {
1.159 www 362: menu=window.open("$nothing","LONCAPAmenu","",false);
1.86 www 363: menu.clearTimeout(menu.menucltim);
1.69 www 364: menu.currentURL=window.location.pathname;
365: menu.currentStale=0;
1.85 www 366: menu.clearbut(3,1);
367: menu.switchbutton
1.108 www 368: (6,3,'catalog.gif','catalog','info','catalog_info()');
369: menu.switchbutton
1.85 www 370: (8,1,'eval.gif','evaluate','this','gopost("/adm/evaluate",currentURL)');
371: menu.switchbutton
372: (8,2,'fdbk.gif','feedback','on this','gopost("/adm/feedback",currentURL)');
373: menu.switchbutton
374: (8,3,'prt.gif','prepare','printout','gopost("/adm/printout",currentURL)');
375: menu.switchbutton
376: (2,1,'back.gif','backward','','gopost("/adm/flip","back:"+currentURL)');
377: menu.switchbutton
378: (2,3,'forw.gif','forward','','gopost("/adm/flip","forward:"+currentURL)');
1.94 www 379: menu.switchbutton
380: (9,1,'sbkm.gif','set','bookmark','set_bookmark()');
381: menu.switchbutton
382: (9,2,'vbkm.gif','view','bookmark','edit_bookmarks()');
383: menu.switchbutton
1.95 www 384: (9,3,'anot.gif','anno-','tations','annotate()');
1.87 www 385: $hwkadd
1.69 www 386: }
1.86 www 387:
1.69 www 388: function LONCAPAstale() {
1.159 www 389: menu=window.open("$nothing","LONCAPAmenu","",false);
1.86 www 390: menu.currentStale=1;
1.127 www 391: menu.switchbutton
392: (3,1,'reload.gif','return','location','go(currentURL)');
393: menu.clearbut(7,1);
394: menu.clearbut(7,2);
395: menu.clearbut(7,3);
1.86 www 396: menu.menucltim=menu.setTimeout(
1.94 www 397: 'clearbut(2,1);clearbut(2,3);clearbut(8,1);clearbut(8,2);clearbut(8,3);'+
1.108 www 398: 'clearbut(9,1);clearbut(9,2);clearbut(9,3);clearbut(6,3)',
1.86 www 399: 2000);
400:
1.87 www 401: }
1.86 www 402:
403: // END LON-CAPA Internal
404: </script>
405: ENDREGTHIS
406:
407: } else {
1.155 matthew 408: $result = (<<ENDDONOTREGTHIS);
1.86 www 409:
410: <script language="JavaScript">
411: // BEGIN LON-CAPA Internal
412:
413: function LONCAPAreg() {
1.159 www 414: menu=window.open("$nothing","LONCAPAmenu","",false);
1.69 www 415: menu.currentStale=1;
1.85 www 416: menu.clearbut(2,1);
417: menu.clearbut(2,3);
418: menu.clearbut(8,1);
419: menu.clearbut(8,2);
420: menu.clearbut(8,3);
1.86 www 421: if (menu.currentURL) {
422: menu.switchbutton
423: (3,1,'reload.gif','return','location','go(currentURL)');
424: } else {
425: menu.clearbut(3,1);
426: }
427: }
428:
429: function LONCAPAstale() {
1.68 www 430: }
1.86 www 431:
1.71 www 432: // END LON-CAPA Internal
1.68 www 433: </script>
1.86 www 434: ENDDONOTREGTHIS
435: }
1.155 matthew 436: if ($target eq 'edit') {
1.156 matthew 437: # Javascript routines for construction space:
438: # openbrowser and opensearcher will start the file browser
439: # (lonindexer) and searcher (lonsearchcat) respectively.
440: # Inputs are the name of the html form being used
441: # and the name of the element the selected URL should
442: # be placed in.
1.155 matthew 443: $result .=<<"ENDBROWSERSCRIPT";
444: <script>
1.156 matthew 445: var editbrowser;
1.162 matthew 446: function openbrowser(formname,elementname,only,omit) {
1.155 matthew 447: var url = '/res/?';
1.156 matthew 448: if (editbrowser == null) {
1.155 matthew 449: url += 'launch=1&';
450: }
451: url += 'catalogmode=interactive&';
452: url += 'mode=edit&';
453: url += 'form=' + formname + '&';
1.162 matthew 454: if (only != null) {
455: url += 'only=' + only + '&';
456: }
457: if (omit != null) {
458: url += 'omit=' + omit + '&';
459: }
1.155 matthew 460: url += 'element=' + elementname + '';
461: var title = 'Browser';
462: var options = 'scrollbars=1,resizable=1,menubar=0';
463: options += ',width=700,height=600';
1.156 matthew 464: editbrowser = open(url,title,options,'1');
465: editbrowser.focus();
466: }
467: var editsearcher;
468: function opensearcher(formname,elementname) {
469: var url = '/adm/searchcat?';
470: if (editsearcher == null) {
471: url += 'launch=1&';
472: }
473: url += 'catalogmode=interactive&';
474: url += 'mode=edit&';
475: url += 'form=' + formname + '&';
476: url += 'element=' + elementname + '';
477: var title = 'Search';
478: var options = 'scrollbars=1,resizable=1,menubar=0';
479: options += ',width=700,height=600';
480: editsearcher = open(url,title,options,'1');
481: editsearcher.focus();
1.155 matthew 482: }
483: </script>
484: ENDBROWSERSCRIPT
485: }
486: return $result;
1.69 www 487: }
488:
489: sub loadevents() {
490: return 'LONCAPAreg();';
491: }
492:
493: sub unloadevents() {
494: return 'LONCAPAstale();';
1.68 www 495: }
496:
1.48 albertel 497: sub printalltags {
498: my $temp;
499: foreach $temp (sort keys %Apache::lonxml::alltags) {
1.141 albertel 500: &Apache::lonxml::debug("$temp -- ".
501: join(',',@{ $Apache::lonxml::alltags{$temp} }));
1.48 albertel 502: }
503: }
1.31 sakharuk 504:
1.3 sakharuk 505: sub xmlparse {
1.18 albertel 506: my ($target,$content_file_string,$safeinit,%style_for_target) = @_;
1.96 albertel 507:
508: &setup_globals($target);
1.48 albertel 509: #&printalltags();
1.16 albertel 510: my @pars = ();
1.23 albertel 511: my $pwd=$ENV{'request.filename'};
512: $pwd =~ s:/[^/]*$::;
513: &newparser(\@pars,\$content_file_string,$pwd);
1.24 sakharuk 514:
1.3 sakharuk 515: my $safeeval = new Safe;
1.40 albertel 516: my $safehole = new Safe::Hole;
1.82 ng 517: &init_safespace($target,$safeeval,$safehole,$safeinit);
1.3 sakharuk 518: #-------------------- Redefinition of the target in the case of compound target
519:
520: ($target, my @tenta) = split('&&',$target);
521:
1.150 albertel 522: my @stack = ();
1.3 sakharuk 523: my @parstack = ();
1.17 albertel 524: &initdepth;
1.67 www 525:
1.101 albertel 526: my $finaloutput = &inner_xmlparse($target,\@stack,\@parstack,\@pars,
527: $safeeval,\%style_for_target);
1.125 www 528: if ($ENV{'request.uri'}) {
529: &writeallows($ENV{'request.uri'});
530: }
1.3 sakharuk 531: return $finaloutput;
1.106 www 532: }
533:
534: sub htmlclean {
1.107 www 535: my ($raw,$full)=@_;
1.106 www 536:
537: my $tree = HTML::TreeBuilder->new;
538: $tree->ignore_unknown(0);
1.140 albertel 539:
1.106 www 540: $tree->parse($raw);
541:
1.107 www 542: my $output= $tree->as_HTML(undef,' ');
1.140 albertel 543:
1.161 albertel 544: $output=~s/\<(br|hr|img|meta|allow)(.*?)\>/\<$1$2 \/\>/gis;
1.111 www 545: $output=~s/\<\/(br|hr|img|meta|allow)\>//gis;
1.107 www 546: unless ($full) {
547: $output=~s/\<[\/]*(body|head|html)\>//gis;
548: }
1.106 www 549:
550: $tree = $tree->delete;
551:
552: return $output;
1.15 albertel 553: }
554:
1.101 albertel 555: sub inner_xmlparse {
556: my ($target,$stack,$parstack,$pars,$safeeval,$style_for_target)=@_;
557: my $finaloutput = '';
558: my $result;
559: my $token;
560: while ( $#$pars > -1 ) {
561: while ($token = $$pars['-1']->get_token) {
562: if (($token->[0] eq 'T') || ($token->[0] eq 'C') || ($token->[0] eq 'D') ) {
563: if ($metamode<1) {
564: $result=$token->[1];
565: }
566: } elsif ($token->[0] eq 'PI') {
567: if ($metamode<1) {
568: $result=$token->[2];
569: }
570: } elsif ($token->[0] eq 'S') {
1.140 albertel 571: # add tag to stack
1.101 albertel 572: push (@$stack,$token->[1]);
573: # add parameters list to another stack
574: push (@$parstack,&parstring($token));
1.140 albertel 575: &increasedepth($token);
1.101 albertel 576: if (exists $$style_for_target{$token->[1]}) {
577: if ($Apache::lonxml::redirection) {
1.140 albertel 578: $Apache::lonxml::outputstack['-1'] .=
1.101 albertel 579: &recurse($$style_for_target{$token->[1]},$target,$safeeval,
580: $style_for_target,@$parstack);
581: } else {
582: $finaloutput .= &recurse($$style_for_target{$token->[1]},$target,
583: $safeeval,$style_for_target,@$parstack);
584: }
585: } else {
586: $result = &callsub("start_$token->[1]", $target, $token, $stack,
587: $parstack, $pars, $safeeval, $style_for_target);
1.140 albertel 588: }
1.101 albertel 589: } elsif ($token->[0] eq 'E') {
590: #clear out any tags that didn't end
591: while ($token->[1] ne $$stack['-1'] && ($#$stack > -1)) {
1.150 albertel 592: my $lasttag=$$stack[-1];
593: if ($token->[1] =~ /^$lasttag$/i) {
594: &Apache::lonxml::warning('Using tag </'.$token->[1].'> as end tag to <'.$$stack[-1].'>');
595: last;
596: } else {
1.152 albertel 597: &Apache::lonxml::warning('Found tag </'.$token->[1].'> when looking for </'.$$stack[-1].'> in file');
1.150 albertel 598: &end_tag($stack,$parstack,$token);
599: }
1.101 albertel 600: }
1.140 albertel 601:
602: if (exists($$style_for_target{'/'."$token->[1]"})) {
1.101 albertel 603: if ($Apache::lonxml::redirection) {
604: $Apache::lonxml::outputstack['-1'] .=
605: &recurse($$style_for_target{'/'."$token->[1]"},
606: $target,$safeeval,$style_for_target,@$parstack);
607: } else {
608: $finaloutput .= &recurse($$style_for_target{'/'."$token->[1]"},
609: $target,$safeeval,$style_for_target,
610: @$parstack);
611: }
612: } else {
613: $result = &callsub("end_$token->[1]", $target, $token, $stack,
614: $parstack, $pars,$safeeval, $style_for_target);
615: }
616: } else {
617: &Apache::lonxml::error("Unknown token event :$token->[0]:$token->[1]:");
618: }
619: #evaluate variable refs in result
620: if ($result ne "") {
621: if ( $#$parstack > -1 ) {
622: if ($Apache::lonxml::redirection) {
623: $Apache::lonxml::outputstack['-1'] .=
624: &Apache::run::evaluate($result,$safeeval,$$parstack['-1']);
625: } else {
626: $finaloutput .= &Apache::run::evaluate($result,$safeeval,
627: $$parstack['-1']);
628: }
629: } else {
630: $finaloutput .= &Apache::run::evaluate($result,$safeeval,'');
631: }
632: $result = '';
1.163 ! albertel 633: }
1.101 albertel 634: if ($token->[0] eq 'E') {
635: &end_tag($stack,$parstack,$token);
636: }
637: }
638: pop @$pars;
639: pop @Apache::lonxml::pwd;
640: }
641:
642: # if ($target eq 'meta') {
643: # $finaloutput.=&endredirection;
644: # }
645:
646: if (($ENV{'QUERY_STRING'}) && ($target eq 'web')) {
647: $finaloutput=&afterburn($finaloutput);
648: }
649: return $finaloutput;
650: }
1.67 www 651:
1.15 albertel 652: sub recurse {
653: my @innerstack = ();
654: my @innerparstack = ();
655: my ($newarg,$target,$safeeval,$style_for_target,@parstack) = @_;
1.16 albertel 656: my @pat = ();
1.23 albertel 657: &newparser(\@pat,\$newarg);
1.15 albertel 658: my $tokenpat;
659: my $partstring = '';
660: my $output='';
1.16 albertel 661: my $decls='';
1.140 albertel 662: &Apache::lonxml::debug("Recursing");
1.16 albertel 663: while ( $#pat > -1 ) {
664: while ($tokenpat = $pat[$#pat]->get_token) {
1.57 albertel 665: if (($tokenpat->[0] eq 'T') || ($tokenpat->[0] eq 'C') || ($tokenpat->[0] eq 'D') ) {
1.61 albertel 666: if ($metamode<1) { $partstring=$tokenpat->[1]; }
1.57 albertel 667: } elsif ($tokenpat->[0] eq 'PI') {
1.61 albertel 668: if ($metamode<1) { $partstring=$tokenpat->[2]; }
1.16 albertel 669: } elsif ($tokenpat->[0] eq 'S') {
670: push (@innerstack,$tokenpat->[1]);
671: push (@innerparstack,&parstring($tokenpat));
1.19 albertel 672: &increasedepth($tokenpat);
1.84 albertel 673: $partstring = &callsub("start_$tokenpat->[1]", $target, $tokenpat,
674: \@innerstack, \@innerparstack, \@pat,
675: $safeeval, $style_for_target);
1.16 albertel 676: } elsif ($tokenpat->[0] eq 'E') {
677: #clear out any tags that didn't end
1.150 albertel 678: while ($tokenpat->[1] ne $innerstack[$#innerstack]
1.43 albertel 679: && ($#innerstack > -1)) {
1.150 albertel 680: my $lasttag=$innerstack[-1];
681: if ($tokenpat->[1] =~ /^$lasttag$/i) {
682: &Apache::lonxml::warning('Using tag </'.$tokenpat->[1].'> as end tag to <'.$innerstack[-1].'>');
683: last;
684: } else {
1.152 albertel 685: &Apache::lonxml::warning('Found tag </'.$tokenpat->[1].'> when looking for </'.$innerstack[-1].'> in file');
1.150 albertel 686: &end_tag(\@innerstack,\@innerparstack,$tokenpat);
687: }
1.43 albertel 688: }
1.84 albertel 689: $partstring = &callsub("end_$tokenpat->[1]", $target, $tokenpat,
690: \@innerstack, \@innerparstack, \@pat,
691: $safeeval, $style_for_target);
1.57 albertel 692: } else {
693: &Apache::lonxml::error("Unknown token event :$tokenpat->[0]:$tokenpat->[1]:");
1.16 albertel 694: }
695: #pass both the variable to the style tag, and the tag we
696: #are processing inside the <definedtag>
697: if ( $partstring ne "" ) {
698: if ( $#parstack > -1 ) {
699: if ( $#innerparstack > -1 ) {
700: $decls= $parstack[$#parstack].$innerparstack[$#innerparstack];
701: } else {
702: $decls= $parstack[$#parstack];
703: }
704: } else {
705: if ( $#innerparstack > -1 ) {
706: $decls=$innerparstack[$#innerparstack];
707: } else {
708: $decls='';
709: }
710: }
711: $output .= &Apache::run::evaluate($partstring,$safeeval,$decls);
712: $partstring = '';
713: }
1.17 albertel 714: if ($tokenpat->[0] eq 'E') { pop @innerstack;pop @innerparstack;
1.19 albertel 715: &decreasedepth($tokenpat);}
1.15 albertel 716: }
1.16 albertel 717: pop @pat;
1.23 albertel 718: pop @Apache::lonxml::pwd;
1.15 albertel 719: }
1.140 albertel 720: &Apache::lonxml::debug("Exiting Recursing");
1.15 albertel 721: return $output;
1.7 albertel 722: }
723:
724: sub callsub {
1.84 albertel 725: my ($sub,$target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.7 albertel 726: my $currentstring='';
1.72 albertel 727: my $nodefault;
1.7 albertel 728: {
1.59 albertel 729: my $sub1;
1.7 albertel 730: no strict 'refs';
1.68 www 731: my $tag=$token->[1];
1.141 albertel 732: my $space=$Apache::lonxml::alltags{$tag}[-1];
1.68 www 733: if (!$space) {
1.141 albertel 734: $tag=~tr/A-Z/a-z/;
1.68 www 735: $sub=~tr/A-Z/a-z/;
1.141 albertel 736: $space=$Apache::lonxml::alltags{$tag}[-1]
1.68 www 737: }
1.97 albertel 738:
739: my $deleted=0;
740: $Apache::lonxml::curdepth=join('_',@Apache::lonxml::depthcounter);
741: if (($token->[0] eq 'S') && ($target eq 'modified')) {
742: $deleted=&Apache::edit::handle_delete($space,$target,$token,$tagstack,
743: $parstack,$parser,$safeeval,
744: $style);
745: }
746: if (!$deleted) {
747: if ($space) {
1.152 albertel 748: #&Apache::lonxml::debug("Calling sub $sub in $space $metamode");
1.97 albertel 749: $sub1="$space\:\:$sub";
750: ($currentstring,$nodefault) = &$sub1($target,$token,$tagstack,
751: $parstack,$parser,$safeeval,
752: $style);
753: } else {
1.152 albertel 754: #&Apache::lonxml::debug("NOT Calling sub $sub in $space $metamode");
1.97 albertel 755: if ($metamode <1) {
756: if (defined($token->[4]) && ($metamode < 1)) {
757: $currentstring = $token->[4];
758: } else {
759: $currentstring = $token->[2];
760: }
1.62 sakharuk 761: }
1.7 albertel 762: }
1.97 albertel 763: # &Apache::lonxml::debug("nodefalt:$nodefault:");
764: if ($currentstring eq '' && $nodefault eq '') {
765: if ($target eq 'edit') {
766: &Apache::lonxml::debug("doing default edit for $token->[1]");
767: if ($token->[0] eq 'S') {
768: $currentstring = &Apache::edit::tag_start($target,$token);
769: } elsif ($token->[0] eq 'E') {
770: $currentstring = &Apache::edit::tag_end($target,$token);
771: }
772: } elsif ($target eq 'modified') {
773: if ($token->[0] eq 'S') {
774: $currentstring = $token->[4];
775: $currentstring.=&Apache::edit::handle_insert();
776: } else {
777: $currentstring = $token->[2];
778: }
1.72 albertel 779: }
780: }
1.7 albertel 781: }
782: use strict 'refs';
783: }
784: return $currentstring;
1.82 ng 785: }
786:
1.96 albertel 787: sub setup_globals {
788: my ($target)=@_;
1.99 albertel 789: $Apache::lonxml::registered = 0;
1.101 albertel 790: @Apache::lonxml::pwd=();
1.124 albertel 791: @Apache::lonxml::extlinks=();
1.96 albertel 792: if ($target eq 'meta') {
793: $Apache::lonxml::redirection = 0;
794: $Apache::lonxml::metamode = 1;
795: $Apache::lonxml::evaluate = 1;
796: $Apache::lonxml::import = 0;
1.129 albertel 797: } elsif ($target eq 'answer') {
798: $Apache::lonxml::redirection = 0;
799: $Apache::lonxml::metamode = 1;
800: $Apache::lonxml::evaluate = 1;
801: $Apache::lonxml::import = 1;
1.96 albertel 802: } elsif ($target eq 'grade') {
803: &startredirection;
804: $Apache::lonxml::metamode = 0;
805: $Apache::lonxml::evaluate = 1;
806: $Apache::lonxml::import = 1;
807: } elsif ($target eq 'modified') {
808: $Apache::lonxml::redirection = 0;
809: $Apache::lonxml::metamode = 0;
810: $Apache::lonxml::evaluate = 0;
811: $Apache::lonxml::import = 0;
812: } elsif ($target eq 'edit') {
813: $Apache::lonxml::redirection = 0;
814: $Apache::lonxml::metamode = 0;
815: $Apache::lonxml::evaluate = 0;
816: $Apache::lonxml::import = 0;
1.163 ! albertel 817: } elsif ($target eq 'analyze') {
! 818: $Apache::lonxml::redirection = 0;
! 819: $Apache::lonxml::metamode = 0;
! 820: $Apache::lonxml::evaluate = 1;
! 821: $Apache::lonxml::import = 1;
1.96 albertel 822: } else {
823: $Apache::lonxml::redirection = 0;
824: $Apache::lonxml::metamode = 0;
825: $Apache::lonxml::evaluate = 1;
826: $Apache::lonxml::import = 1;
827: }
828: }
829:
1.82 ng 830: sub init_safespace {
831: my ($target,$safeeval,$safehole,$safeinit) = @_;
832: $safeeval->permit("entereval");
833: $safeeval->permit(":base_math");
834: $safeeval->permit("sort");
835: $safeeval->deny(":base_io");
1.102 albertel 836: $safehole->wrap(\&Apache::scripttag::xmlparse,$safeeval,'&xmlparse');
1.82 ng 837: $safehole->wrap(\&Apache::lonnet::EXT,$safeeval,'&EXT');
838:
839: $safehole->wrap(\&Math::Cephes::asin,$safeeval,'&asin');
840: $safehole->wrap(\&Math::Cephes::acos,$safeeval,'&acos');
841: $safehole->wrap(\&Math::Cephes::atan,$safeeval,'&atan');
842: $safehole->wrap(\&Math::Cephes::sinh,$safeeval,'&sinh');
843: $safehole->wrap(\&Math::Cephes::cosh,$safeeval,'&cosh');
844: $safehole->wrap(\&Math::Cephes::tanh,$safeeval,'&tanh');
845: $safehole->wrap(\&Math::Cephes::asinh,$safeeval,'&asinh');
846: $safehole->wrap(\&Math::Cephes::acosh,$safeeval,'&acosh');
847: $safehole->wrap(\&Math::Cephes::atanh,$safeeval,'&atanh');
848: $safehole->wrap(\&Math::Cephes::erf,$safeeval,'&erf');
849: $safehole->wrap(\&Math::Cephes::erfc,$safeeval,'&erfc');
850: $safehole->wrap(\&Math::Cephes::j0,$safeeval,'&j0');
851: $safehole->wrap(\&Math::Cephes::j1,$safeeval,'&j1');
852: $safehole->wrap(\&Math::Cephes::jn,$safeeval,'&jn');
853: $safehole->wrap(\&Math::Cephes::jv,$safeeval,'&jv');
854: $safehole->wrap(\&Math::Cephes::y0,$safeeval,'&y0');
855: $safehole->wrap(\&Math::Cephes::y1,$safeeval,'&y1');
856: $safehole->wrap(\&Math::Cephes::yn,$safeeval,'&yn');
857: $safehole->wrap(\&Math::Cephes::yv,$safeeval,'&yv');
1.91 ng 858: $safehole->wrap(\&Math::Random::random_beta,$safeeval,'&math_random_beta');
859: $safehole->wrap(\&Math::Random::random_chi_square,$safeeval,'&math_random_chi_square');
860: $safehole->wrap(\&Math::Random::random_exponential,$safeeval,'&math_random_exponential');
861: $safehole->wrap(\&Math::Random::random_f,$safeeval,'&math_random_f');
862: $safehole->wrap(\&Math::Random::random_gamma,$safeeval,'&math_random_gamma');
863: $safehole->wrap(\&Math::Random::random_multivariate_normal,$safeeval,'&math_random_multivariate_normal');
864: $safehole->wrap(\&Math::Random::random_multinomial,$safeeval,'&math_random_multinomial');
865: $safehole->wrap(\&Math::Random::random_noncentral_chi_square,$safeeval,'&math_random_noncentral_chi_square');
866: $safehole->wrap(\&Math::Random::random_noncentral_f,$safeeval,'&math_random_noncentral_f');
867: $safehole->wrap(\&Math::Random::random_normal,$safeeval,'&math_random_normal');
868: $safehole->wrap(\&Math::Random::random_permutation,$safeeval,'&math_random_permutation');
1.93 ng 869: $safehole->wrap(\&Math::Random::random_permuted_index,$safeeval,'&math_random_permuted_index');
1.91 ng 870: $safehole->wrap(\&Math::Random::random_uniform,$safeeval,'&math_random_uniform');
871: $safehole->wrap(\&Math::Random::random_poisson,$safeeval,'&math_random_poisson');
872: $safehole->wrap(\&Math::Random::random_uniform_integer,$safeeval,'&math_random_uniform_integer');
873: $safehole->wrap(\&Math::Random::random_negative_binomial,$safeeval,'&math_random_negative_binomial');
874: $safehole->wrap(\&Math::Random::random_binomial,$safeeval,'&math_random_binomial');
875: $safehole->wrap(\&Math::Random::random_seed_from_phrase,$safeeval,'&random_seed_from_phrase');
876: $safehole->wrap(\&Math::Random::random_set_seed_from_phrase,$safeeval,'&random_set_seed_from_phrase');
877: $safehole->wrap(\&Math::Random::random_get_seed,$safeeval,'&random_get_seed');
878: $safehole->wrap(\&Math::Random::random_set_seed,$safeeval,'&random_set_seed');
879:
1.82 ng 880: #need to inspect this class of ops
881: # $safeeval->deny(":base_orig");
1.91 ng 882: $safeinit .= ';$external::target="'.$target.'";';
1.121 albertel 883: my $rndseed;
1.123 albertel 884: my ($symb,$courseid,$domain,$name) = &Apache::lonxml::whichuser();
885: $rndseed=&Apache::lonnet::rndseed($symb,$courseid,$domain,$name);
1.121 albertel 886: $safeinit .= ';$external::randomseed='.$rndseed.';';
1.82 ng 887: &Apache::run::run($safeinit,$safeeval);
1.17 albertel 888: }
889:
1.55 albertel 890: sub startredirection {
891: $Apache::lonxml::redirection++;
892: push (@Apache::lonxml::outputstack, '');
893: }
894:
895: sub endredirection {
896: if (!$Apache::lonxml::redirection) {
1.72 albertel 897: &Apache::lonxml::error("Endredirection was called, before a startredirection, perhaps you have unbalanced tags. Some debuging information:".join ":",caller);
1.55 albertel 898: return '';
899: }
900: $Apache::lonxml::redirection--;
901: pop @Apache::lonxml::outputstack;
1.97 albertel 902: }
903:
904: sub end_tag {
905: my ($tagstack,$parstack,$token)=@_;
906: pop(@$tagstack);
907: pop(@$parstack);
908: &decreasedepth($token);
1.55 albertel 909: }
910:
1.17 albertel 911: sub initdepth {
912: @Apache::lonxml::depthcounter=();
913: $Apache::lonxml::depth=-1;
914: $Apache::lonxml::olddepth=-1;
915: }
916:
917: sub increasedepth {
1.19 albertel 918: my ($token) = @_;
1.17 albertel 919: $Apache::lonxml::depth++;
920: $Apache::lonxml::depthcounter[$Apache::lonxml::depth]++;
921: if ($Apache::lonxml::depthcounter[$Apache::lonxml::depth]==1) {
922: $Apache::lonxml::olddepth=$Apache::lonxml::depth;
923: }
1.42 albertel 924: my $curdepth=join('_',@Apache::lonxml::depthcounter);
1.64 albertel 925: &Apache::lonxml::debug("s $Apache::lonxml::depth : $Apache::lonxml::olddepth : $curdepth : $token->[1]\n");
1.54 albertel 926: #print "<br />s $Apache::lonxml::depth : $Apache::lonxml::olddepth : $curdepth : $token->[1]\n";
1.17 albertel 927: }
928:
929: sub decreasedepth {
1.19 albertel 930: my ($token) = @_;
1.17 albertel 931: $Apache::lonxml::depth--;
1.36 albertel 932: if ($Apache::lonxml::depth<$Apache::lonxml::olddepth-1) {
933: $#Apache::lonxml::depthcounter--;
934: $Apache::lonxml::olddepth=$Apache::lonxml::depth+1;
935: }
1.43 albertel 936: if ( $Apache::lonxml::depth < -1) {
1.140 albertel 937: &Apache::lonxml::warning("Missing tags, unable to properly run file.");
1.43 albertel 938: $Apache::lonxml::depth='-1';
939: }
1.42 albertel 940: my $curdepth=join('_',@Apache::lonxml::depthcounter);
1.64 albertel 941: &Apache::lonxml::debug("e $Apache::lonxml::depth : $Apache::lonxml::olddepth : $token->[1] : $curdepth\n");
1.54 albertel 942: #print "<br />e $Apache::lonxml::depth : $Apache::lonxml::olddepth : $token->[1] : $curdepth\n";
1.1 sakharuk 943: }
1.19 albertel 944:
945: sub get_all_text {
946:
947: my($tag,$pars)= @_;
948: my $depth=0;
949: my $token;
950: my $result='';
1.57 albertel 951: if ( $tag =~ m:^/: ) {
952: my $tag=substr($tag,1);
953: # &Apache::lonxml::debug("have:$tag:");
954: while (($depth >=0) && ($token = $pars->get_token)) {
955: # &Apache::lonxml::debug("e token:$token->[0]:$depth:$token->[1]");
956: if (($token->[0] eq 'T')||($token->[0] eq 'C')||($token->[0] eq 'D')) {
957: $result.=$token->[1];
958: } elsif ($token->[0] eq 'PI') {
959: $result.=$token->[2];
960: } elsif ($token->[0] eq 'S') {
1.151 albertel 961: if ($token->[1] =~ /^$tag$/i) { $depth++; }
1.57 albertel 962: $result.=$token->[4];
963: } elsif ($token->[0] eq 'E') {
1.151 albertel 964: if ( $token->[1] =~ /^$tag$/i) { $depth--; }
1.57 albertel 965: #skip sending back the last end tag
966: if ($depth > -1) { $result.=$token->[2]; } else {
967: $pars->unget_token($token);
968: }
969: }
970: }
971: } else {
972: while ($token = $pars->get_token) {
973: # &Apache::lonxml::debug("s token:$token->[0]:$depth:$token->[1]");
974: if (($token->[0] eq 'T')||($token->[0] eq 'C')||($token->[0] eq 'D')) {
975: $result.=$token->[1];
976: } elsif ($token->[0] eq 'PI') {
977: $result.=$token->[2];
978: } elsif ($token->[0] eq 'S') {
1.151 albertel 979: if ( $token->[1] =~ /^$tag$/i) {
1.57 albertel 980: $pars->unget_token($token); last;
981: } else {
982: $result.=$token->[4];
983: }
984: } elsif ($token->[0] eq 'E') {
985: $result.=$token->[2];
1.36 albertel 986: }
1.19 albertel 987: }
988: }
1.49 albertel 989: # &Apache::lonxml::debug("Exit:$result:");
1.19 albertel 990: return $result
991: }
992:
1.23 albertel 993: sub newparser {
994: my ($parser,$contentref,$dir) = @_;
995: push (@$parser,HTML::TokeParser->new($contentref));
1.56 albertel 996: $$parser['-1']->xml_mode('1');
1.163 ! albertel 997: # $$parser['-1']->attr_encoded('1');
1.23 albertel 998: if ( $dir eq '' ) {
999: push (@Apache::lonxml::pwd, $Apache::lonxml::pwd[$#Apache::lonxml::pwd]);
1000: } else {
1001: push (@Apache::lonxml::pwd, $dir);
1002: }
1003: # &Apache::lonxml::debug("pwd:$#Apache::lonxml::pwd");
1004: # &Apache::lonxml::debug("pwd:$Apache::lonxml::pwd[$#Apache::lonxml::pwd]");
1005: }
1.1 sakharuk 1006:
1.8 albertel 1007: sub parstring {
1008: my ($token) = @_;
1009: my $temp='';
1.142 albertel 1010: foreach (@{$token->[3]}) {
1.35 www 1011: unless ($_=~/\W/) {
1.42 albertel 1012: my $val=$token->[2]->{$_};
1.150 albertel 1013: $val =~ s/([\%\@\\\"])/\\$1/g;
1.51 albertel 1014: #if ($val =~ m/^[\%\@]/) { $val="\\".$val; }
1.42 albertel 1015: $temp .= "my \$$_=\"$val\";"
1.20 albertel 1016: }
1.142 albertel 1017: }
1.8 albertel 1018: return $temp;
1019: }
1.22 albertel 1020:
1.34 www 1021: sub writeallows {
1.126 www 1022: unless ($#extlinks>=0) { return; }
1.34 www 1023: my $thisurl='/res/'.&Apache::lonnet::declutter(shift);
1.111 www 1024: if ($ENV{'httpref.'.$thisurl}) {
1025: $thisurl=$ENV{'httpref.'.$thisurl};
1026: }
1.34 www 1027: my $thisdir=$thisurl;
1028: $thisdir=~s/\/[^\/]+$//;
1029: my %httpref=();
1.142 albertel 1030: foreach (@extlinks) {
1.34 www 1031: $httpref{'httpref.'.
1.125 www 1032: &Apache::lonnet::hreflocation($thisdir,$_)}=$thisurl;
1.142 albertel 1033: }
1.126 www 1034: @extlinks=();
1.34 www 1035: &Apache::lonnet::appenv(%httpref);
1036: }
1037:
1.66 www 1038: #
1039: # Afterburner handles anchors, highlights and links
1040: #
1041: sub afterburn {
1042: my $result=shift;
1.154 albertel 1043: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
1044: ['highlight','anchor','link']);
1.66 www 1045: if ($ENV{'form.highlight'}) {
1.142 albertel 1046: foreach (split(/\,/,$ENV{'form.highlight'})) {
1.66 www 1047: my $anchorname=$_;
1048: my $matchthis=$anchorname;
1049: $matchthis=~s/\_+/\\s\+/g;
1050: $result=~s/($matchthis)/\<font color=\"red\"\>$1\<\/font\>/gs;
1.142 albertel 1051: }
1.66 www 1052: }
1053: if ($ENV{'form.link'}) {
1.142 albertel 1054: foreach (split(/\,/,$ENV{'form.link'})) {
1.66 www 1055: my ($anchorname,$linkurl)=split(/\>/,$_);
1056: my $matchthis=$anchorname;
1057: $matchthis=~s/\_+/\\s\+/g;
1058: $result=~s/($matchthis)/\<a href=\"$linkurl\"\>$1\<\/a\>/gs;
1.142 albertel 1059: }
1.66 www 1060: }
1061: if ($ENV{'form.anchor'}) {
1062: my $anchorname=$ENV{'form.anchor'};
1063: my $matchthis=$anchorname;
1064: $matchthis=~s/\_+/\\s\+/g;
1065: $result=~s/($matchthis)/\<a name=\"$anchorname\"\>$1\<\/a\>/s;
1066: $result.=(<<"ENDSCRIPT");
1067: <script>
1068: document.location.hash='$anchorname';
1069: </script>
1070: ENDSCRIPT
1071: }
1072: return $result;
1073: }
1074:
1.79 www 1075: sub storefile {
1076: my ($file,$contents)=@_;
1077: if (my $fh=Apache::File->new('>'.$file)) {
1078: print $fh $contents;
1079: $fh->close();
1.147 albertel 1080: } else {
1081: &warning("Unable to save file $file");
1.79 www 1082: }
1083: }
1084:
1.151 albertel 1085: sub createnewhtml {
1086: my $filecontents=(<<SIMPLECONTENT);
1.78 www 1087: <html>
1088: <head>
1089: <title>
1090: Title of Document Goes Here
1091: </title>
1092: </head>
1093: <body bgcolor="#FFFFFF">
1094:
1095: Body of Document Goes Here
1096:
1097: </body>
1098: </html>
1099: SIMPLECONTENT
1.151 albertel 1100: return $filecontents;
1101: }
1102:
1.147 albertel 1103:
1.151 albertel 1104: sub inserteditinfo {
1105: my ($result,$filecontents)=@_;
1.157 albertel 1106: $filecontents = &HTML::Entities::encode($filecontents);
1.147 albertel 1107: # my $editheader='<a href="#editsection">Edit below</a><hr />';
1.161 albertel 1108: my $buttons=(<<BUTTONS);
1109: <input type="submit" name="attemptclean"
1110: value="Save and then attempt to clean HTML" />
1111: <input type="submit" name="savethisfile" value="Save this" />
1112: <input type="submit" name="viewmode" value="View" />
1113: BUTTONS
1.78 www 1114: my $editfooter=(<<ENDFOOTER);
1115: <hr />
1116: <a name="editsection" />
1117: <form method="post">
1.161 albertel 1118: <input type="hidden" name="editmode" value="Edit" />
1119: $buttons
1.78 www 1120: <textarea cols="80" rows="40" name="filecont">$filecontents</textarea>
1.161 albertel 1121: $buttons
1.78 www 1122: <br />
1123: </form>
1124: ENDFOOTER
1.147 albertel 1125: # $result=~s/(\<body[^\>]*\>)/$1$editheader/is;
1.78 www 1126: $result=~s/(\<\/body\>)/$editfooter/is;
1127: return $result;
1128: }
1129:
1.152 albertel 1130: sub get_target {
1131: my $viewgrades=&Apache::lonnet::allowed('vgr',$ENV{'request.course.id'});
1132: if ( $ENV{'request.state'} eq 'published') {
1133: if ( defined($ENV{'form.grade_target'})
1134: && ($viewgrades == 'F' )) {
1135: return ($ENV{'form.grade_target'});
1.153 albertel 1136: } elsif (defined($ENV{'form.grade_target'})) {
1137: if (($ENV{'form.grade_target'} eq 'web') ||
1138: ($ENV{'form.grade_target'} eq 'tex') ) {
1139: return $ENV{'form.grade_target'}
1140: } else {
1141: return 'web';
1142: }
1.152 albertel 1143: } else {
1144: return 'web';
1145: }
1146: } elsif ($ENV{'request.state'} eq 'construct') {
1147: if ( defined($ENV{'form.grade_target'})) {
1148: return ($ENV{'form.grade_target'});
1149: } else {
1150: return 'web';
1151: }
1152: } else {
1153: return 'web';
1154: }
1155: }
1156:
1.24 sakharuk 1157: sub handler {
1158: my $request=shift;
1.68 www 1159:
1.152 albertel 1160: my $target=&get_target();
1.68 www 1161:
1.65 albertel 1162: $Apache::lonxml::debug=0;
1.68 www 1163:
1.25 sakharuk 1164: if ($ENV{'browser.mathml'}) {
1.27 albertel 1165: $request->content_type('text/xml');
1166: } else {
1167: $request->content_type('text/html');
1.25 sakharuk 1168: }
1.141 albertel 1169: &Apache::loncommon::no_cache($request);
1.27 albertel 1170: $request->send_http_header;
1.141 albertel 1171:
1.45 www 1172: return OK if $request->header_only;
1.27 albertel 1173:
1.79 www 1174:
1175: my $file=&Apache::lonnet::filelocation("",$request->uri);
1.78 www 1176: #
1177: # Edit action? Save file.
1178: #
1179: unless ($ENV{'request.state'} eq 'published') {
1.107 www 1180: if (($ENV{'form.savethisfile'}) || ($ENV{'form.attemptclean'})) {
1.79 www 1181: &storefile($file,$ENV{'form.filecont'});
1.78 www 1182: }
1183: }
1.24 sakharuk 1184: my %mystyle;
1.147 albertel 1185: my $result = '';
1.50 albertel 1186: my $filecontents=&Apache::lonnet::getfile($file);
1187: if ($filecontents == -1) {
1.78 www 1188: $result=(<<ENDNOTFOUND);
1189: <html>
1190: <head>
1191: <title>File not found</title>
1192: </head>
1193: <body bgcolor="#FFFFFF">
1194: <b>File not found: $file</b>
1195: </body>
1196: </html>
1197: ENDNOTFOUND
1.50 albertel 1198: $filecontents='';
1.151 albertel 1199: if ($ENV{'request.state'} ne 'published') {
1200: $filecontents=&createnewhtml();
1.161 albertel 1201: $ENV{'form.editmode'}='Edit'; #force edit mode
1.151 albertel 1202: }
1.50 albertel 1203: } else {
1.147 albertel 1204: unless ($ENV{'request.state'} eq 'published') {
1205: if ($ENV{'form.attemptclean'}) {
1206: $filecontents=&htmlclean($filecontents,1);
1.107 www 1207: }
1.147 albertel 1208: }
1.161 albertel 1209: if (!$ENV{'form.editmode'} || $ENV{'form.viewmode'}) {
1.147 albertel 1210: $result = &Apache::lonxml::xmlparse($target,$filecontents,'',%mystyle);
1211: }
1.78 www 1212: }
1213:
1214: #
1215: # Edit action? Insert editing commands
1216: #
1217: unless ($ENV{'request.state'} eq 'published') {
1.161 albertel 1218: if ($ENV{'form.editmode'} && (!($ENV{'form.viewmode'}))) {
1.147 albertel 1219: $result='<html><body bgcolor="#FFFFFF"></body></html>';
1.78 www 1220: $result=&inserteditinfo($result,$filecontents);
1.147 albertel 1221: }
1.66 www 1222: }
1.147 albertel 1223:
1.126 www 1224: writeallows($request->uri);
1.50 albertel 1225:
1.67 www 1226: $request->print($result);
1.64 albertel 1227:
1.45 www 1228: return OK;
1.24 sakharuk 1229: }
1.147 albertel 1230:
1.22 albertel 1231: sub debug {
1232: if ($Apache::lonxml::debug eq 1) {
1.146 albertel 1233: $|=1;
1234: print("DEBUG:".join('<br />',@_)."<br />\n");
1.22 albertel 1235: }
1236: }
1.49 albertel 1237:
1.22 albertel 1238: sub error {
1.74 albertel 1239: if (($Apache::lonxml::debug eq 1) || ($ENV{'request.state'} eq 'construct') ) {
1.146 albertel 1240: print "<b>ERROR:</b>".join('<br />',@_)."<br />\n";
1.52 albertel 1241: } else {
1242: print "<b>An Error occured while processing this resource. The instructor has been notified.</b> <br />";
1243: #notify author
1.146 albertel 1244: &Apache::lonmsg::author_res_msg($ENV{'request.filename'},join('<br />',@_));
1.52 albertel 1245: #notify course
1246: if ( $ENV{'request.course.id'} ) {
1247: my $users=$ENV{'course.'.$ENV{'request.course.id'}.'.comment.email'};
1.143 www 1248: my $declutter=&Apache::lonnet::declutter($ENV{'request.filename'});
1.52 albertel 1249: foreach my $user (split /\,/, $users) {
1250: ($user,my $domain) = split /:/, $user;
1.143 www 1251: &Apache::lonmsg::user_normal_msg($user,$domain,
1.146 albertel 1252: "Error [$declutter]",join('<br />',@_));
1.52 albertel 1253: }
1254: }
1.74 albertel 1255:
1.52 albertel 1256: #FIXME probably shouldn't have me get everything forever.
1.146 albertel 1257: &Apache::lonmsg::user_normal_msg('albertel','msu',"Error in $ENV{'request.filename'}",join('<br />',@_));
1.74 albertel 1258: #&Apache::lonmsg::user_normal_msg('albertel','103',"Error in $ENV{'request.filename'}",$_[0]);
1.52 albertel 1259: }
1.22 albertel 1260: }
1.49 albertel 1261:
1.22 albertel 1262: sub warning {
1.73 harris41 1263: if ($ENV{'request.state'} eq 'construct') {
1.146 albertel 1264: print "<b>W</b>ARNING<b>:</b>".join('<br />',@_)."<br />\n";
1.73 harris41 1265: }
1.83 albertel 1266: }
1267:
1268: sub get_param {
1269: my ($param,$parstack,$safeeval,$context) = @_;
1270: if ( ! $context ) { $context = -1; }
1271: my $args ='';
1272: if ( $#$parstack > (-2-$context) ) { $args=$$parstack[$context]; }
1.157 albertel 1273: if ( ! $args ) { return undef; }
1.131 albertel 1274: if ( $args =~ /my \$$param=\"/ ) {
1275: return &Apache::run::run("{$args;".'return $'.$param.'}',$safeeval); #'
1276: } else {
1277: return undef;
1278: }
1.22 albertel 1279: }
1280:
1.132 albertel 1281: sub get_param_var {
1282: my ($param,$parstack,$safeeval,$context) = @_;
1283: if ( ! $context ) { $context = -1; }
1284: my $args ='';
1285: if ( $#$parstack > (-2-$context) ) { $args=$$parstack[$context]; }
1286: if ( $args !~ /my \$$param=\"/ ) { return undef; }
1287: my $value=&Apache::run::run("{$args;".'return $'.$param.'}',$safeeval); #'
1288: if ($value =~ /^[\$\@\%]/) {
1289: return &Apache::run::run("return $value",$safeeval,1);
1290: } else {
1291: return $value;
1292: }
1293: }
1294:
1.74 albertel 1295: sub register_insert {
1.75 albertel 1296: my @data = split /\n/, &Apache::lonnet::getfile('/home/httpd/lonTabs/insertlist.tab');
1.74 albertel 1297: my $i;
1.76 albertel 1298: my $tagnum=0;
1.74 albertel 1299: my @order;
1300: for ($i=0;$i < $#data; $i++) {
1301: my $line = $data[$i];
1302: if ( $line =~ /^\#/ || $line =~ /^\s*\n/) { next; }
1303: if ( $line =~ /TABLE/ ) { last; }
1.92 albertel 1304: my ($tag,$descrip,$color,$function,$show) = split(/,/, $line);
1.135 albertel 1305: if ($tag) {
1306: $insertlist{"$tagnum.tag"} = $tag;
1307: $insertlist{"$tagnum.description"} = $descrip;
1308: $insertlist{"$tagnum.color"} = $color;
1309: $insertlist{"$tagnum.function"} = $function;
1310: if (!defined($show)) { $show='yes'; }
1311: $insertlist{"$tagnum.show"}= $show;
1312: $insertlist{"$tag.num"}=$tagnum;
1313: $tagnum++;
1314: }
1.74 albertel 1315: }
1.76 albertel 1316: $i++; #skipping TABLE line
1317: $tagnum = 0;
1.74 albertel 1318: for (;$i < $#data;$i++) {
1319: my $line = $data[$i];
1.76 albertel 1320: my ($mnemonic,@which) = split(/ +/,$line);
1321: my $tag = $insertlist{"$tagnum.tag"};
1.144 matthew 1322: for (my $j=0;$j <=$#which;$j++) {
1.74 albertel 1323: if ( $which[$j] eq 'Y' ) {
1.76 albertel 1324: if ($insertlist{"$j.show"} ne 'no') {
1325: push(@{ $insertlist{"$tag.which"} },$j);
1326: }
1.74 albertel 1327: }
1328: }
1.76 albertel 1329: $tagnum++;
1.74 albertel 1330: }
1331: }
1.98 albertel 1332:
1333: sub description {
1334: my ($token)=@_;
1.138 albertel 1335: my $tagnum;
1336: my $tag=$token->[1];
1337: foreach my $namespace (reverse @Apache::lonxml::namespace) {
1338: my $testtag=$namespace.'::'.$tag;
1339: $tagnum=$insertlist{"$testtag.num"};
1340: if (defined($tagnum)) { last; }
1341: }
1342: if (!defined ($tagnum)) { $tagnum=$Apache::lonxml::insertlist{"$tag.num"}; }
1343: return $insertlist{$tagnum.'.description'};
1.98 albertel 1344: }
1.123 albertel 1345:
1346: # ----------------------------------------------------------------- whichuser
1347: # returns a list of $symb, $courseid, $domain, $name that is correct for
1348: # calls to lonnet functions for this setup.
1349: # - looks for form.grade_ parameters
1350: sub whichuser {
1.134 albertel 1351: my ($symb,$courseid,$domain,$name);
1.123 albertel 1352: if (defined($ENV{'form.grade_symb'})) {
1353: my $tmp_courseid=$ENV{'form.grade_courseid'};
1354: my $allowed=&Apache::lonnet::allowed('mgr',$tmp_courseid);
1355: if ($allowed) {
1356: $symb=$ENV{'form.grade_symb'};
1357: $courseid=$ENV{'form.grade_courseid'};
1358: $domain=$ENV{'form.grade_domain'};
1359: $name=$ENV{'form.grade_username'};
1360: }
1.134 albertel 1361: } else {
1362: $symb=&Apache::lonnet::symbread();
1363: $courseid=$ENV{'request.course.id'};
1364: $domain=$ENV{'user.domain'};
1365: $name=$ENV{'user.name'};
1.123 albertel 1366: }
1367: return ($symb,$courseid,$domain,$name);
1368: }
1369:
1.1 sakharuk 1370: 1;
1371: __END__
1.68 www 1372:
1373:
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