Annotation of loncom/xml/lonxml.pm, revision 1.150
1.2 sakharuk 1: # The LearningOnline Network with CAPA
1.3 sakharuk 2: # XML Parser Module
1.2 sakharuk 3: #
1.150 ! albertel 4: # $Id: lonxml.pm,v 1.149 2002/01/17 17:42:34 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
1.76 albertel 63: qw(@pwd @outputstack $redirection $import @extlinks $metamode $evaluate %insertlist @namespace);
1.1 sakharuk 64: use strict;
65: use HTML::TokeParser;
1.106 www 66: use HTML::TreeBuilder;
1.3 sakharuk 67: use Safe;
1.40 albertel 68: use Safe::Hole;
1.81 ng 69: use Math::Cephes qw(:trigs :hypers :bessels erf erfc);
1.91 ng 70: use Math::Random qw(:all);
1.13 albertel 71: use Opcode;
1.72 albertel 72:
73: sub register {
1.141 albertel 74: my ($space,@taglist) = @_;
75: foreach my $temptag (@taglist) {
76: push(@{ $Apache::lonxml::alltags{$temptag} },$space);
1.72 albertel 77: }
78: }
79:
1.141 albertel 80: sub deregister {
81: my ($space,@taglist) = @_;
82: foreach my $temptag (@taglist) {
83: my $tempspace = $Apache::lonxml::alltags{$temptag}[-1];
84: if ($tempspace eq $space) {
85: pop(@{ $Apache::lonxml::alltags{$temptag} });
86: }
87: }
1.142 albertel 88: #&printalltags();
1.141 albertel 89: }
90:
1.46 www 91: use Apache::Constants qw(:common);
1.71 www 92: use Apache::lontexconvert;
1.72 albertel 93: use Apache::style;
94: use Apache::run;
95: use Apache::londefdef;
96: use Apache::scripttag;
97: use Apache::edit;
1.79 www 98: use Apache::lonnet;
99: use Apache::File;
1.136 albertel 100: use Apache::loncommon;
1.79 www 101:
1.72 albertel 102: #================================================== Main subroutine: xmlparse
103: #debugging control, to turn on debugging modify the correct handler
104: $Apache::lonxml::debug=0;
105:
106: #path to the directory containing the file currently being processed
107: @pwd=();
108:
109: #these two are used for capturing a subset of the output for later processing,
110: #don't touch them directly use &startredirection and &endredirection
111: @outputstack = ();
112: $redirection = 0;
113:
114: #controls wheter the <import> tag actually does
115: $import = 1;
116: @extlinks=();
117:
118: # meta mode is a bit weird only some output is to be turned off
119: #<output> tag turns metamode off (defined in londefdef.pm)
120: $metamode = 0;
121:
122: # turns on and of run::evaluate actually derefencing var refs
123: $evaluate = 1;
1.7 albertel 124:
1.74 albertel 125: # data structure for eidt mode, determines what tags can go into what other tags
126: %insertlist=();
1.68 www 127:
1.99 albertel 128: # stores the list of active tag namespaces
1.76 albertel 129: @namespace=();
130:
1.99 albertel 131: # has the dynamic menu been updated to know about this resource
132: $Apache::lonxml::registered=0;
133:
1.68 www 134: sub xmlbegin {
135: my $output='';
136: if ($ENV{'browser.mathml'}) {
137: $output='<?xml version="1.0"?>'
138: .'<?xml-stylesheet type="text/css" href="/adm/MathML/mathml.css"?>'
139: .'<!DOCTYPE html SYSTEM "/adm/MathML/mathml.dtd" '
140: .'[<!ENTITY mathns "http://www.w3.org/1998/Math/MathML">]>'
141: .'<html xmlns:math="http://www.w3.org/1998/Math/MathML" '
142: .'xmlns="http://www.w3.org/TR/REC-html40">';
143: } else {
144: $output='<html>';
145: }
146: return $output;
147: }
148:
149: sub xmlend {
1.103 www 150: my $discussion='';
151: if ($ENV{'request.course.id'}) {
1.109 www 152: my $crs='/'.$ENV{'request.course.id'};
153: if ($ENV{'request.course.sec'}) {
154: $crs.='_'.$ENV{'request.course.sec'};
155: }
156: $crs=~s/\_/\//g;
157: my $seeid=&Apache::lonnet::allowed('rin',$crs);
1.103 www 158: my $symb=&Apache::lonnet::symbread();
159: if ($symb) {
160: my %contrib=&Apache::lonnet::restore($symb,$ENV{'request.course.id'},
161: $ENV{'course.'.$ENV{'request.course.id'}.'.domain'},
162: $ENV{'course.'.$ENV{'request.course.id'}.'.num'});
163: if ($contrib{'version'}) {
164: $discussion.=
165: '<address><hr /><h2>Course Discussion of Resource</h2>';
166: my $idx;
167: for ($idx=1;$idx<=$contrib{'version'};$idx++) {
1.110 www 168: my $hidden=($contrib{'hidden'}=~/\.$idx\./);
169: unless (($hidden) && (!$seeid)) {
170: my $message=$contrib{$idx.':message'};
171: $message=~s/\n/\<br \/\>/g;
172: if ($message) {
173: if ($hidden) {
174: $message='<font color="#888888">'.$message.'</font>';
175: }
1.109 www 176: my $sender='Anonymous';
177: if ((!$contrib{$idx.':anonymous'}) || ($seeid)) {
178: $sender=$contrib{$idx.':sendername'}.' at '.
179: $contrib{$idx.':senderdomain'};
180: if ($contrib{$idx.':anonymous'}) {
181: $sender.=' (anonymous)';
1.110 www 182: }
183: if ($seeid) {
184: if ($hidden) {
185: $sender.=' <a href="/adm/feedback?unhide='.
186: $symb.':::'.$idx.'">Make Visible</a>';
187: } else {
188: $sender.=' <a href="/adm/feedback?hide='.
189: $symb.':::'.$idx.'">Hide</a>';
190: }
1.109 www 191: }
192: }
193: $discussion.='<p><b>'.$sender.'</b> ('.
1.103 www 194: localtime($contrib{$idx.':timestamp'}).
195: '):<blockquote>'.$message.
1.110 www 196: '</blockquote></p>';
197: }
198: }
1.103 www 199: }
200: $discussion.='</address>';
201: }
202: }
203: }
204: return $discussion.'</html>';
1.119 www 205: }
206:
207: sub tokeninputfield {
1.120 www 208: my $defhost=$Apache::lonnet::perlvar{'lonHostID'};
209: $defhost=~tr/a-z/A-Z/;
1.119 www 210: return (<<ENDINPUTFIELD)
1.120 www 211: <script>
212: function updatetoken() {
213: var comp=new Array;
214: var barcode=unescape(document.tokeninput.barcode.value);
215: comp=barcode.split('*');
216: if (typeof(comp[0])!="undefined") {
217: document.tokeninput.codeone.value=comp[0];
218: }
219: if (typeof(comp[1])!="undefined") {
220: document.tokeninput.codetwo.value=comp[1];
221: }
222: if (typeof(comp[2])!="undefined") {
223: comp[2]=comp[2].toUpperCase();
224: document.tokeninput.codethree.value=comp[2];
225: }
226: document.tokeninput.barcode.value='';
227: }
228: </script>
229: <form method="post" name="tokeninput">
1.119 www 230: <table border="2" bgcolor="#FFFFBB">
231: <tr><th>DocID Checkin</th></tr>
232: <tr><td>
233: <table>
234: <tr>
235: <td>Scan in Barcode</td>
1.120 www 236: <td><input type="text" size="22" name="barcode"
237: onChange="updatetoken()"/></td>
1.119 www 238: </tr>
239: <tr><td><i>or</i> Type in DocID</td>
240: <td>
241: <input type="text" size="5" name="codeone" />
1.120 www 242: <b><font size="+2">*</font></b>
1.119 www 243: <input type="text" size="5" name="codetwo" />
1.120 www 244: <b><font size="+2">*</font></b>
245: <input type="text" size="10" name="codethree" value="$defhost"
246: onChange="this.value=this.value.toUpperCase()" />
1.119 www 247: </td></tr>
248: </table>
249: </td></tr>
250: <tr><td><input type="submit" value="Check in DocID" /></td></tr>
251: </table>
252: </form>
253: ENDINPUTFIELD
1.112 www 254: }
255:
1.116 www 256: sub maketoken {
1.118 www 257: my ($symb,$tuname,$tudom,$tcrsid)=@_;
1.112 www 258: unless ($symb) {
259: $symb=&Apache::lonnet::symbread();
260: }
261: unless ($tuname) {
262: $tuname=$ENV{'user.name'};
263: $tudom=$ENV{'user.domain'};
264: $tcrsid=$ENV{'request.course.id'};
265: }
1.116 www 266:
1.118 www 267: return &Apache::lonnet::checkout($symb,$tuname,$tudom,$tcrsid);
268: }
269:
270: sub printtokenheader {
1.133 albertel 271: my ($target,$token,$tsymb,$tcrsid,$tudom,$tuname)=@_;
1.116 www 272: unless ($token) { return ''; }
1.118 www 273:
1.133 albertel 274: my ($symb,$courseid,$domain,$name) = &Apache::lonxml::whichuser();
275: unless ($tsymb) {
276: $tsymb=$symb;
1.118 www 277: }
278: unless ($tuname) {
1.133 albertel 279: $tuname=$name;
280: $tudom=$domain;
281: $tcrsid=$courseid;
1.118 www 282: }
1.114 www 283:
284: my %reply=&Apache::lonnet::get('environment',
285: ['firstname','middlename','lastname','generation'],
286: $tudom,$tuname);
287: my $plainname=$reply{'firstname'}.' '.
288: $reply{'middlename'}.' '.
289: $reply{'lastname'}.' '.
290: $reply{'generation'};
291:
1.112 www 292: if ($target eq 'web') {
1.145 www 293: my %idhash=&Apache::lonnet::idrget($tudom,($tuname));
1.115 www 294: return
295: '<img align="right" src="/cgi-bin/barcode.gif?encode='.$token.'" />'.
296: 'Checked out for '.$plainname.
1.114 www 297: '<br />User: '.$tuname.' at '.$tudom.
1.145 www 298: '<br />ID: '.$idhash{$tuname}.
1.117 www 299: '<br />CourseID: '.$tcrsid.
1.145 www 300: '<br />Course: '.$ENV{'course.'.$tcrsid.'.description'}.
1.114 www 301: '<br />DocID: '.$token.
1.116 www 302: '<br />Time: '.localtime().'<hr />';
1.112 www 303: } else {
1.121 albertel 304: return $token;
1.112 www 305: }
1.68 www 306: }
307:
1.70 www 308: sub fontsettings() {
309: my $headerstring='';
310: if (($ENV{'browser.os'} eq 'mac') && (!$ENV{'browser.mathml'})) {
311: $headerstring.=
312: '<meta Content-Type="text/html; charset=x-mac-roman">';
313: }
314: return $headerstring;
315: }
316:
1.68 www 317: sub registerurl {
1.100 www 318: my $forcereg=shift;
1.130 www 319: if ($ENV{'request.publicaccess'}) {
320: return
321: '<script>function LONCAPAreg(){} function LONCAPAstale(){}</script>';
322: }
1.128 albertel 323: if ($Apache::lonxml::registered && !$forcereg) { return ''; }
1.105 albertel 324: $Apache::lonxml::registered=1;
1.100 www 325: if (($ENV{'REQUEST_URI'}!~/^\/(res\/)*adm\//) || ($forcereg)) {
1.87 www 326: my $hwkadd='';
327: if ($ENV{'REQUEST_URI'}=~/\.(problem|exam|quiz|assess|survey|form)$/) {
328: if (&Apache::lonnet::allowed('vgr',$ENV{'request.course.id'})) {
329: $hwkadd.=(<<ENDSUBM);
330: menu.switchbutton
331: (7,1,'subm.gif','view sub','missions',
1.88 www 332: 'gocmd("/adm/grades","submission")');
1.87 www 333: ENDSUBM
334: }
335: if (&Apache::lonnet::allowed('mgr',$ENV{'request.course.id'})) {
336: $hwkadd.=(<<ENDGRDS);
337: menu.switchbutton
338: (7,2,'pgrd.gif','problem','grades',
1.88 www 339: 'gocmd("/adm/grades","viewgrades")');
1.87 www 340: ENDGRDS
341: }
342: if (&Apache::lonnet::allowed('opa',$ENV{'request.course.id'})) {
343: $hwkadd.=(<<ENDPARM);
344: menu.switchbutton
345: (7,3,'pparm.gif','problem','parms',
1.88 www 346: 'gocmd("/adm/parmset","set")');
1.87 www 347: ENDPARM
348: }
349: }
1.86 www 350: return (<<ENDREGTHIS);
1.87 www 351:
1.68 www 352: <script language="JavaScript">
1.71 www 353: // BEGIN LON-CAPA Internal
1.86 www 354:
1.69 www 355: function LONCAPAreg() {
356: menu=window.open("","LONCAPAmenu");
1.86 www 357: menu.clearTimeout(menu.menucltim);
1.69 www 358: menu.currentURL=window.location.pathname;
359: menu.currentStale=0;
1.85 www 360: menu.clearbut(3,1);
361: menu.switchbutton
1.108 www 362: (6,3,'catalog.gif','catalog','info','catalog_info()');
363: menu.switchbutton
1.85 www 364: (8,1,'eval.gif','evaluate','this','gopost("/adm/evaluate",currentURL)');
365: menu.switchbutton
366: (8,2,'fdbk.gif','feedback','on this','gopost("/adm/feedback",currentURL)');
367: menu.switchbutton
368: (8,3,'prt.gif','prepare','printout','gopost("/adm/printout",currentURL)');
369: menu.switchbutton
370: (2,1,'back.gif','backward','','gopost("/adm/flip","back:"+currentURL)');
371: menu.switchbutton
372: (2,3,'forw.gif','forward','','gopost("/adm/flip","forward:"+currentURL)');
1.94 www 373: menu.switchbutton
374: (9,1,'sbkm.gif','set','bookmark','set_bookmark()');
375: menu.switchbutton
376: (9,2,'vbkm.gif','view','bookmark','edit_bookmarks()');
377: menu.switchbutton
1.95 www 378: (9,3,'anot.gif','anno-','tations','annotate()');
1.87 www 379: $hwkadd
1.69 www 380: }
1.86 www 381:
1.69 www 382: function LONCAPAstale() {
1.86 www 383: menu=window.open("","LONCAPAmenu");
384: menu.currentStale=1;
1.127 www 385: menu.switchbutton
386: (3,1,'reload.gif','return','location','go(currentURL)');
387: menu.clearbut(7,1);
388: menu.clearbut(7,2);
389: menu.clearbut(7,3);
1.86 www 390: menu.menucltim=menu.setTimeout(
1.94 www 391: 'clearbut(2,1);clearbut(2,3);clearbut(8,1);clearbut(8,2);clearbut(8,3);'+
1.108 www 392: 'clearbut(9,1);clearbut(9,2);clearbut(9,3);clearbut(6,3)',
1.86 www 393: 2000);
394:
1.87 www 395: }
1.86 www 396:
397: // END LON-CAPA Internal
398: </script>
399: ENDREGTHIS
400:
401: } else {
402: return (<<ENDDONOTREGTHIS);
403:
404: <script language="JavaScript">
405: // BEGIN LON-CAPA Internal
406:
407: function LONCAPAreg() {
1.69 www 408: menu=window.open("","LONCAPAmenu");
409: menu.currentStale=1;
1.85 www 410: menu.clearbut(2,1);
411: menu.clearbut(2,3);
412: menu.clearbut(8,1);
413: menu.clearbut(8,2);
414: menu.clearbut(8,3);
1.86 www 415: if (menu.currentURL) {
416: menu.switchbutton
417: (3,1,'reload.gif','return','location','go(currentURL)');
418: } else {
419: menu.clearbut(3,1);
420: }
421: }
422:
423: function LONCAPAstale() {
1.68 www 424: }
1.86 www 425:
1.71 www 426: // END LON-CAPA Internal
1.68 www 427: </script>
1.86 www 428: ENDDONOTREGTHIS
429:
430: }
1.69 www 431: }
432:
433: sub loadevents() {
434: return 'LONCAPAreg();';
435: }
436:
437: sub unloadevents() {
438: return 'LONCAPAstale();';
1.68 www 439: }
440:
1.48 albertel 441: sub printalltags {
442: my $temp;
443: foreach $temp (sort keys %Apache::lonxml::alltags) {
1.141 albertel 444: &Apache::lonxml::debug("$temp -- ".
445: join(',',@{ $Apache::lonxml::alltags{$temp} }));
1.48 albertel 446: }
447: }
1.31 sakharuk 448:
1.3 sakharuk 449: sub xmlparse {
1.18 albertel 450: my ($target,$content_file_string,$safeinit,%style_for_target) = @_;
1.96 albertel 451:
452: &setup_globals($target);
1.48 albertel 453: #&printalltags();
1.16 albertel 454: my @pars = ();
1.23 albertel 455: my $pwd=$ENV{'request.filename'};
456: $pwd =~ s:/[^/]*$::;
457: &newparser(\@pars,\$content_file_string,$pwd);
1.24 sakharuk 458:
1.3 sakharuk 459: my $safeeval = new Safe;
1.40 albertel 460: my $safehole = new Safe::Hole;
1.82 ng 461: &init_safespace($target,$safeeval,$safehole,$safeinit);
1.3 sakharuk 462: #-------------------- Redefinition of the target in the case of compound target
463:
464: ($target, my @tenta) = split('&&',$target);
465:
1.150 ! albertel 466: my @stack = ();
1.3 sakharuk 467: my @parstack = ();
1.17 albertel 468: &initdepth;
1.67 www 469:
1.101 albertel 470: my $finaloutput = &inner_xmlparse($target,\@stack,\@parstack,\@pars,
471: $safeeval,\%style_for_target);
1.125 www 472: if ($ENV{'request.uri'}) {
473: &writeallows($ENV{'request.uri'});
474: }
1.3 sakharuk 475: return $finaloutput;
1.106 www 476: }
477:
478: sub htmlclean {
1.107 www 479: my ($raw,$full)=@_;
1.106 www 480:
481: my $tree = HTML::TreeBuilder->new;
482: $tree->ignore_unknown(0);
1.140 albertel 483:
1.106 www 484: $tree->parse($raw);
485:
1.107 www 486: my $output= $tree->as_HTML(undef,' ');
1.140 albertel 487:
1.111 www 488: $output=~s/\<(br|hr|img|meta|allow)([^\>\/]*)\>/\<$1$2 \/\>/gis;
489: $output=~s/\<\/(br|hr|img|meta|allow)\>//gis;
1.107 www 490: unless ($full) {
491: $output=~s/\<[\/]*(body|head|html)\>//gis;
492: }
1.106 www 493:
494: $tree = $tree->delete;
495:
496: return $output;
1.15 albertel 497: }
498:
1.101 albertel 499: sub inner_xmlparse {
500: my ($target,$stack,$parstack,$pars,$safeeval,$style_for_target)=@_;
501: my $finaloutput = '';
502: my $result;
503: my $token;
504: while ( $#$pars > -1 ) {
505: while ($token = $$pars['-1']->get_token) {
506: if (($token->[0] eq 'T') || ($token->[0] eq 'C') || ($token->[0] eq 'D') ) {
507: if ($metamode<1) {
508: $result=$token->[1];
509: }
510: } elsif ($token->[0] eq 'PI') {
511: if ($metamode<1) {
512: $result=$token->[2];
513: }
514: } elsif ($token->[0] eq 'S') {
1.140 albertel 515: # add tag to stack
1.101 albertel 516: push (@$stack,$token->[1]);
517: # add parameters list to another stack
518: push (@$parstack,&parstring($token));
1.140 albertel 519: &increasedepth($token);
1.101 albertel 520: if (exists $$style_for_target{$token->[1]}) {
521: if ($Apache::lonxml::redirection) {
1.140 albertel 522: $Apache::lonxml::outputstack['-1'] .=
1.101 albertel 523: &recurse($$style_for_target{$token->[1]},$target,$safeeval,
524: $style_for_target,@$parstack);
525: } else {
526: $finaloutput .= &recurse($$style_for_target{$token->[1]},$target,
527: $safeeval,$style_for_target,@$parstack);
528: }
529: } else {
530: $result = &callsub("start_$token->[1]", $target, $token, $stack,
531: $parstack, $pars, $safeeval, $style_for_target);
1.140 albertel 532: }
1.101 albertel 533: } elsif ($token->[0] eq 'E') {
534: #clear out any tags that didn't end
535: while ($token->[1] ne $$stack['-1'] && ($#$stack > -1)) {
1.150 ! albertel 536: my $lasttag=$$stack[-1];
! 537: if ($token->[1] =~ /^$lasttag$/i) {
! 538: &Apache::lonxml::warning('Using tag </'.$token->[1].'> as end tag to <'.$$stack[-1].'>');
! 539: last;
! 540: } else {
! 541: &Apache::lonxml::warning('Found tag </'.$$stack[-1].'> when looking for </'.$token->[1].'> in file');
! 542: &end_tag($stack,$parstack,$token);
! 543: }
1.101 albertel 544: }
1.140 albertel 545:
546: if (exists($$style_for_target{'/'."$token->[1]"})) {
1.101 albertel 547: if ($Apache::lonxml::redirection) {
548: $Apache::lonxml::outputstack['-1'] .=
549: &recurse($$style_for_target{'/'."$token->[1]"},
550: $target,$safeeval,$style_for_target,@$parstack);
551: } else {
552: $finaloutput .= &recurse($$style_for_target{'/'."$token->[1]"},
553: $target,$safeeval,$style_for_target,
554: @$parstack);
555: }
556: } else {
557: $result = &callsub("end_$token->[1]", $target, $token, $stack,
558: $parstack, $pars,$safeeval, $style_for_target);
559: }
560: } else {
561: &Apache::lonxml::error("Unknown token event :$token->[0]:$token->[1]:");
562: }
563: #evaluate variable refs in result
564: if ($result ne "") {
565: if ( $#$parstack > -1 ) {
566: if ($Apache::lonxml::redirection) {
567: $Apache::lonxml::outputstack['-1'] .=
568: &Apache::run::evaluate($result,$safeeval,$$parstack['-1']);
569: } else {
570: $finaloutput .= &Apache::run::evaluate($result,$safeeval,
571: $$parstack['-1']);
572: }
573: } else {
574: $finaloutput .= &Apache::run::evaluate($result,$safeeval,'');
575: }
576: $result = '';
577: }
578: if ($token->[0] eq 'E') {
579: &end_tag($stack,$parstack,$token);
580: }
581: }
582: pop @$pars;
583: pop @Apache::lonxml::pwd;
584: }
585:
586: # if ($target eq 'meta') {
587: # $finaloutput.=&endredirection;
588: # }
589:
590: if (($ENV{'QUERY_STRING'}) && ($target eq 'web')) {
591: $finaloutput=&afterburn($finaloutput);
592: }
593: return $finaloutput;
594: }
1.67 www 595:
1.15 albertel 596: sub recurse {
597: my @innerstack = ();
598: my @innerparstack = ();
599: my ($newarg,$target,$safeeval,$style_for_target,@parstack) = @_;
1.16 albertel 600: my @pat = ();
1.23 albertel 601: &newparser(\@pat,\$newarg);
1.15 albertel 602: my $tokenpat;
603: my $partstring = '';
604: my $output='';
1.16 albertel 605: my $decls='';
1.140 albertel 606: &Apache::lonxml::debug("Recursing");
1.16 albertel 607: while ( $#pat > -1 ) {
608: while ($tokenpat = $pat[$#pat]->get_token) {
1.57 albertel 609: if (($tokenpat->[0] eq 'T') || ($tokenpat->[0] eq 'C') || ($tokenpat->[0] eq 'D') ) {
1.61 albertel 610: if ($metamode<1) { $partstring=$tokenpat->[1]; }
1.57 albertel 611: } elsif ($tokenpat->[0] eq 'PI') {
1.61 albertel 612: if ($metamode<1) { $partstring=$tokenpat->[2]; }
1.16 albertel 613: } elsif ($tokenpat->[0] eq 'S') {
614: push (@innerstack,$tokenpat->[1]);
615: push (@innerparstack,&parstring($tokenpat));
1.19 albertel 616: &increasedepth($tokenpat);
1.84 albertel 617: $partstring = &callsub("start_$tokenpat->[1]", $target, $tokenpat,
618: \@innerstack, \@innerparstack, \@pat,
619: $safeeval, $style_for_target);
1.16 albertel 620: } elsif ($tokenpat->[0] eq 'E') {
621: #clear out any tags that didn't end
1.150 ! albertel 622: while ($tokenpat->[1] ne $innerstack[$#innerstack]
1.43 albertel 623: && ($#innerstack > -1)) {
1.150 ! albertel 624: my $lasttag=$innerstack[-1];
! 625: if ($tokenpat->[1] =~ /^$lasttag$/i) {
! 626: &Apache::lonxml::warning('Using tag </'.$tokenpat->[1].'> as end tag to <'.$innerstack[-1].'>');
! 627: last;
! 628: } else {
! 629: &Apache::lonxml::warning('Found tag </'.$innerstack[-1].'> when looking for </'.$tokenpat->[1].'> in file');
! 630: &end_tag(\@innerstack,\@innerparstack,$tokenpat);
! 631: }
1.43 albertel 632: }
1.84 albertel 633: $partstring = &callsub("end_$tokenpat->[1]", $target, $tokenpat,
634: \@innerstack, \@innerparstack, \@pat,
635: $safeeval, $style_for_target);
1.57 albertel 636: } else {
637: &Apache::lonxml::error("Unknown token event :$tokenpat->[0]:$tokenpat->[1]:");
1.16 albertel 638: }
639: #pass both the variable to the style tag, and the tag we
640: #are processing inside the <definedtag>
641: if ( $partstring ne "" ) {
642: if ( $#parstack > -1 ) {
643: if ( $#innerparstack > -1 ) {
644: $decls= $parstack[$#parstack].$innerparstack[$#innerparstack];
645: } else {
646: $decls= $parstack[$#parstack];
647: }
648: } else {
649: if ( $#innerparstack > -1 ) {
650: $decls=$innerparstack[$#innerparstack];
651: } else {
652: $decls='';
653: }
654: }
655: $output .= &Apache::run::evaluate($partstring,$safeeval,$decls);
656: $partstring = '';
657: }
1.17 albertel 658: if ($tokenpat->[0] eq 'E') { pop @innerstack;pop @innerparstack;
1.19 albertel 659: &decreasedepth($tokenpat);}
1.15 albertel 660: }
1.16 albertel 661: pop @pat;
1.23 albertel 662: pop @Apache::lonxml::pwd;
1.15 albertel 663: }
1.140 albertel 664: &Apache::lonxml::debug("Exiting Recursing");
1.15 albertel 665: return $output;
1.7 albertel 666: }
667:
668: sub callsub {
1.84 albertel 669: my ($sub,$target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.7 albertel 670: my $currentstring='';
1.72 albertel 671: my $nodefault;
1.7 albertel 672: {
1.59 albertel 673: my $sub1;
1.7 albertel 674: no strict 'refs';
1.68 www 675: my $tag=$token->[1];
1.141 albertel 676: my $space=$Apache::lonxml::alltags{$tag}[-1];
1.68 www 677: if (!$space) {
1.141 albertel 678: $tag=~tr/A-Z/a-z/;
1.68 www 679: $sub=~tr/A-Z/a-z/;
1.141 albertel 680: $space=$Apache::lonxml::alltags{$tag}[-1]
1.68 www 681: }
1.97 albertel 682:
683: my $deleted=0;
684: $Apache::lonxml::curdepth=join('_',@Apache::lonxml::depthcounter);
685: if (($token->[0] eq 'S') && ($target eq 'modified')) {
686: $deleted=&Apache::edit::handle_delete($space,$target,$token,$tagstack,
687: $parstack,$parser,$safeeval,
688: $style);
689: }
690: if (!$deleted) {
691: if ($space) {
692: #&Apache::lonxml::debug("Calling sub $sub in $space $metamode<br />\n");
693: $sub1="$space\:\:$sub";
694: ($currentstring,$nodefault) = &$sub1($target,$token,$tagstack,
695: $parstack,$parser,$safeeval,
696: $style);
697: } else {
698: #&Apache::lonxml::debug("NOT Calling sub $sub in $space $metamode<br />\n");
699: if ($metamode <1) {
700: if (defined($token->[4]) && ($metamode < 1)) {
701: $currentstring = $token->[4];
702: } else {
703: $currentstring = $token->[2];
704: }
1.62 sakharuk 705: }
1.7 albertel 706: }
1.97 albertel 707: # &Apache::lonxml::debug("nodefalt:$nodefault:");
708: if ($currentstring eq '' && $nodefault eq '') {
709: if ($target eq 'edit') {
710: &Apache::lonxml::debug("doing default edit for $token->[1]");
711: if ($token->[0] eq 'S') {
712: $currentstring = &Apache::edit::tag_start($target,$token);
713: } elsif ($token->[0] eq 'E') {
714: $currentstring = &Apache::edit::tag_end($target,$token);
715: }
716: } elsif ($target eq 'modified') {
717: if ($token->[0] eq 'S') {
718: $currentstring = $token->[4];
719: $currentstring.=&Apache::edit::handle_insert();
720: } else {
721: $currentstring = $token->[2];
722: }
1.72 albertel 723: }
724: }
1.7 albertel 725: }
726: use strict 'refs';
727: }
728: return $currentstring;
1.82 ng 729: }
730:
1.96 albertel 731: sub setup_globals {
732: my ($target)=@_;
1.99 albertel 733: $Apache::lonxml::registered = 0;
1.101 albertel 734: @Apache::lonxml::pwd=();
1.124 albertel 735: @Apache::lonxml::extlinks=();
1.96 albertel 736: if ($target eq 'meta') {
737: $Apache::lonxml::redirection = 0;
738: $Apache::lonxml::metamode = 1;
739: $Apache::lonxml::evaluate = 1;
740: $Apache::lonxml::import = 0;
1.129 albertel 741: } elsif ($target eq 'answer') {
742: $Apache::lonxml::redirection = 0;
743: $Apache::lonxml::metamode = 1;
744: $Apache::lonxml::evaluate = 1;
745: $Apache::lonxml::import = 1;
1.96 albertel 746: } elsif ($target eq 'grade') {
747: &startredirection;
748: $Apache::lonxml::metamode = 0;
749: $Apache::lonxml::evaluate = 1;
750: $Apache::lonxml::import = 1;
751: } elsif ($target eq 'modified') {
752: $Apache::lonxml::redirection = 0;
753: $Apache::lonxml::metamode = 0;
754: $Apache::lonxml::evaluate = 0;
755: $Apache::lonxml::import = 0;
756: } elsif ($target eq 'edit') {
757: $Apache::lonxml::redirection = 0;
758: $Apache::lonxml::metamode = 0;
759: $Apache::lonxml::evaluate = 0;
760: $Apache::lonxml::import = 0;
761: } else {
762: $Apache::lonxml::redirection = 0;
763: $Apache::lonxml::metamode = 0;
764: $Apache::lonxml::evaluate = 1;
765: $Apache::lonxml::import = 1;
766: }
767: }
768:
1.82 ng 769: sub init_safespace {
770: my ($target,$safeeval,$safehole,$safeinit) = @_;
771: $safeeval->permit("entereval");
772: $safeeval->permit(":base_math");
773: $safeeval->permit("sort");
774: $safeeval->deny(":base_io");
1.102 albertel 775: $safehole->wrap(\&Apache::scripttag::xmlparse,$safeeval,'&xmlparse');
1.82 ng 776: $safehole->wrap(\&Apache::lonnet::EXT,$safeeval,'&EXT');
777:
778: $safehole->wrap(\&Math::Cephes::asin,$safeeval,'&asin');
779: $safehole->wrap(\&Math::Cephes::acos,$safeeval,'&acos');
780: $safehole->wrap(\&Math::Cephes::atan,$safeeval,'&atan');
781: $safehole->wrap(\&Math::Cephes::sinh,$safeeval,'&sinh');
782: $safehole->wrap(\&Math::Cephes::cosh,$safeeval,'&cosh');
783: $safehole->wrap(\&Math::Cephes::tanh,$safeeval,'&tanh');
784: $safehole->wrap(\&Math::Cephes::asinh,$safeeval,'&asinh');
785: $safehole->wrap(\&Math::Cephes::acosh,$safeeval,'&acosh');
786: $safehole->wrap(\&Math::Cephes::atanh,$safeeval,'&atanh');
787: $safehole->wrap(\&Math::Cephes::erf,$safeeval,'&erf');
788: $safehole->wrap(\&Math::Cephes::erfc,$safeeval,'&erfc');
789: $safehole->wrap(\&Math::Cephes::j0,$safeeval,'&j0');
790: $safehole->wrap(\&Math::Cephes::j1,$safeeval,'&j1');
791: $safehole->wrap(\&Math::Cephes::jn,$safeeval,'&jn');
792: $safehole->wrap(\&Math::Cephes::jv,$safeeval,'&jv');
793: $safehole->wrap(\&Math::Cephes::y0,$safeeval,'&y0');
794: $safehole->wrap(\&Math::Cephes::y1,$safeeval,'&y1');
795: $safehole->wrap(\&Math::Cephes::yn,$safeeval,'&yn');
796: $safehole->wrap(\&Math::Cephes::yv,$safeeval,'&yv');
1.91 ng 797: $safehole->wrap(\&Math::Random::random_beta,$safeeval,'&math_random_beta');
798: $safehole->wrap(\&Math::Random::random_chi_square,$safeeval,'&math_random_chi_square');
799: $safehole->wrap(\&Math::Random::random_exponential,$safeeval,'&math_random_exponential');
800: $safehole->wrap(\&Math::Random::random_f,$safeeval,'&math_random_f');
801: $safehole->wrap(\&Math::Random::random_gamma,$safeeval,'&math_random_gamma');
802: $safehole->wrap(\&Math::Random::random_multivariate_normal,$safeeval,'&math_random_multivariate_normal');
803: $safehole->wrap(\&Math::Random::random_multinomial,$safeeval,'&math_random_multinomial');
804: $safehole->wrap(\&Math::Random::random_noncentral_chi_square,$safeeval,'&math_random_noncentral_chi_square');
805: $safehole->wrap(\&Math::Random::random_noncentral_f,$safeeval,'&math_random_noncentral_f');
806: $safehole->wrap(\&Math::Random::random_normal,$safeeval,'&math_random_normal');
807: $safehole->wrap(\&Math::Random::random_permutation,$safeeval,'&math_random_permutation');
1.93 ng 808: $safehole->wrap(\&Math::Random::random_permuted_index,$safeeval,'&math_random_permuted_index');
1.91 ng 809: $safehole->wrap(\&Math::Random::random_uniform,$safeeval,'&math_random_uniform');
810: $safehole->wrap(\&Math::Random::random_poisson,$safeeval,'&math_random_poisson');
811: $safehole->wrap(\&Math::Random::random_uniform_integer,$safeeval,'&math_random_uniform_integer');
812: $safehole->wrap(\&Math::Random::random_negative_binomial,$safeeval,'&math_random_negative_binomial');
813: $safehole->wrap(\&Math::Random::random_binomial,$safeeval,'&math_random_binomial');
814: $safehole->wrap(\&Math::Random::random_seed_from_phrase,$safeeval,'&random_seed_from_phrase');
815: $safehole->wrap(\&Math::Random::random_set_seed_from_phrase,$safeeval,'&random_set_seed_from_phrase');
816: $safehole->wrap(\&Math::Random::random_get_seed,$safeeval,'&random_get_seed');
817: $safehole->wrap(\&Math::Random::random_set_seed,$safeeval,'&random_set_seed');
818:
1.82 ng 819: #need to inspect this class of ops
820: # $safeeval->deny(":base_orig");
1.91 ng 821: $safeinit .= ';$external::target="'.$target.'";';
1.121 albertel 822: my $rndseed;
1.123 albertel 823: my ($symb,$courseid,$domain,$name) = &Apache::lonxml::whichuser();
824: $rndseed=&Apache::lonnet::rndseed($symb,$courseid,$domain,$name);
1.121 albertel 825: $safeinit .= ';$external::randomseed='.$rndseed.';';
1.82 ng 826: &Apache::run::run($safeinit,$safeeval);
1.17 albertel 827: }
828:
1.55 albertel 829: sub startredirection {
830: $Apache::lonxml::redirection++;
831: push (@Apache::lonxml::outputstack, '');
832: }
833:
834: sub endredirection {
835: if (!$Apache::lonxml::redirection) {
1.72 albertel 836: &Apache::lonxml::error("Endredirection was called, before a startredirection, perhaps you have unbalanced tags. Some debuging information:".join ":",caller);
1.55 albertel 837: return '';
838: }
839: $Apache::lonxml::redirection--;
840: pop @Apache::lonxml::outputstack;
1.97 albertel 841: }
842:
843: sub end_tag {
844: my ($tagstack,$parstack,$token)=@_;
845: pop(@$tagstack);
846: pop(@$parstack);
847: &decreasedepth($token);
1.55 albertel 848: }
849:
1.17 albertel 850: sub initdepth {
851: @Apache::lonxml::depthcounter=();
852: $Apache::lonxml::depth=-1;
853: $Apache::lonxml::olddepth=-1;
854: }
855:
856: sub increasedepth {
1.19 albertel 857: my ($token) = @_;
1.17 albertel 858: $Apache::lonxml::depth++;
859: $Apache::lonxml::depthcounter[$Apache::lonxml::depth]++;
860: if ($Apache::lonxml::depthcounter[$Apache::lonxml::depth]==1) {
861: $Apache::lonxml::olddepth=$Apache::lonxml::depth;
862: }
1.42 albertel 863: my $curdepth=join('_',@Apache::lonxml::depthcounter);
1.64 albertel 864: &Apache::lonxml::debug("s $Apache::lonxml::depth : $Apache::lonxml::olddepth : $curdepth : $token->[1]\n");
1.54 albertel 865: #print "<br />s $Apache::lonxml::depth : $Apache::lonxml::olddepth : $curdepth : $token->[1]\n";
1.17 albertel 866: }
867:
868: sub decreasedepth {
1.19 albertel 869: my ($token) = @_;
1.17 albertel 870: $Apache::lonxml::depth--;
1.36 albertel 871: if ($Apache::lonxml::depth<$Apache::lonxml::olddepth-1) {
872: $#Apache::lonxml::depthcounter--;
873: $Apache::lonxml::olddepth=$Apache::lonxml::depth+1;
874: }
1.43 albertel 875: if ( $Apache::lonxml::depth < -1) {
1.140 albertel 876: &Apache::lonxml::warning("Missing tags, unable to properly run file.");
1.43 albertel 877: $Apache::lonxml::depth='-1';
878: }
1.42 albertel 879: my $curdepth=join('_',@Apache::lonxml::depthcounter);
1.64 albertel 880: &Apache::lonxml::debug("e $Apache::lonxml::depth : $Apache::lonxml::olddepth : $token->[1] : $curdepth\n");
1.54 albertel 881: #print "<br />e $Apache::lonxml::depth : $Apache::lonxml::olddepth : $token->[1] : $curdepth\n";
1.1 sakharuk 882: }
1.19 albertel 883:
884: sub get_all_text {
885:
886: my($tag,$pars)= @_;
887: my $depth=0;
888: my $token;
889: my $result='';
1.57 albertel 890: if ( $tag =~ m:^/: ) {
891: my $tag=substr($tag,1);
892: # &Apache::lonxml::debug("have:$tag:");
893: while (($depth >=0) && ($token = $pars->get_token)) {
894: # &Apache::lonxml::debug("e token:$token->[0]:$depth:$token->[1]");
895: if (($token->[0] eq 'T')||($token->[0] eq 'C')||($token->[0] eq 'D')) {
896: $result.=$token->[1];
897: } elsif ($token->[0] eq 'PI') {
898: $result.=$token->[2];
899: } elsif ($token->[0] eq 'S') {
900: if ($token->[1] eq $tag) { $depth++; }
901: $result.=$token->[4];
902: } elsif ($token->[0] eq 'E') {
903: if ( $token->[1] eq $tag) { $depth--; }
904: #skip sending back the last end tag
905: if ($depth > -1) { $result.=$token->[2]; } else {
906: $pars->unget_token($token);
907: }
908: }
909: }
910: } else {
911: while ($token = $pars->get_token) {
912: # &Apache::lonxml::debug("s token:$token->[0]:$depth:$token->[1]");
913: if (($token->[0] eq 'T')||($token->[0] eq 'C')||($token->[0] eq 'D')) {
914: $result.=$token->[1];
915: } elsif ($token->[0] eq 'PI') {
916: $result.=$token->[2];
917: } elsif ($token->[0] eq 'S') {
918: if ( $token->[1] eq $tag) {
919: $pars->unget_token($token); last;
920: } else {
921: $result.=$token->[4];
922: }
923: } elsif ($token->[0] eq 'E') {
924: $result.=$token->[2];
1.36 albertel 925: }
1.19 albertel 926: }
927: }
1.49 albertel 928: # &Apache::lonxml::debug("Exit:$result:");
1.19 albertel 929: return $result
930: }
931:
1.23 albertel 932: sub newparser {
933: my ($parser,$contentref,$dir) = @_;
934: push (@$parser,HTML::TokeParser->new($contentref));
1.56 albertel 935: $$parser['-1']->xml_mode('1');
1.23 albertel 936: if ( $dir eq '' ) {
937: push (@Apache::lonxml::pwd, $Apache::lonxml::pwd[$#Apache::lonxml::pwd]);
938: } else {
939: push (@Apache::lonxml::pwd, $dir);
940: }
941: # &Apache::lonxml::debug("pwd:$#Apache::lonxml::pwd");
942: # &Apache::lonxml::debug("pwd:$Apache::lonxml::pwd[$#Apache::lonxml::pwd]");
943: }
1.1 sakharuk 944:
1.8 albertel 945: sub parstring {
946: my ($token) = @_;
947: my $temp='';
1.142 albertel 948: foreach (@{$token->[3]}) {
1.35 www 949: unless ($_=~/\W/) {
1.42 albertel 950: my $val=$token->[2]->{$_};
1.150 ! albertel 951: $val =~ s/([\%\@\\\"])/\\$1/g;
1.51 albertel 952: #if ($val =~ m/^[\%\@]/) { $val="\\".$val; }
1.42 albertel 953: $temp .= "my \$$_=\"$val\";"
1.20 albertel 954: }
1.142 albertel 955: }
1.8 albertel 956: return $temp;
957: }
1.22 albertel 958:
1.34 www 959: sub writeallows {
1.126 www 960: unless ($#extlinks>=0) { return; }
1.34 www 961: my $thisurl='/res/'.&Apache::lonnet::declutter(shift);
1.111 www 962: if ($ENV{'httpref.'.$thisurl}) {
963: $thisurl=$ENV{'httpref.'.$thisurl};
964: }
1.34 www 965: my $thisdir=$thisurl;
966: $thisdir=~s/\/[^\/]+$//;
967: my %httpref=();
1.142 albertel 968: foreach (@extlinks) {
1.34 www 969: $httpref{'httpref.'.
1.125 www 970: &Apache::lonnet::hreflocation($thisdir,$_)}=$thisurl;
1.142 albertel 971: }
1.126 www 972: @extlinks=();
1.34 www 973: &Apache::lonnet::appenv(%httpref);
974: }
975:
1.66 www 976: #
977: # Afterburner handles anchors, highlights and links
978: #
979: sub afterburn {
980: my $result=shift;
1.142 albertel 981: foreach (split(/&/,$ENV{'QUERY_STRING'})) {
1.66 www 982: my ($name, $value) = split(/=/,$_);
983: $value =~ tr/+/ /;
984: $value =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
985: if (($name eq 'highlight')||($name eq 'anchor')||($name eq 'link')) {
986: unless ($ENV{'form.'.$name}) {
987: $ENV{'form.'.$name}=$value;
988: }
989: }
1.142 albertel 990: }
1.66 www 991: if ($ENV{'form.highlight'}) {
1.142 albertel 992: foreach (split(/\,/,$ENV{'form.highlight'})) {
1.66 www 993: my $anchorname=$_;
994: my $matchthis=$anchorname;
995: $matchthis=~s/\_+/\\s\+/g;
996: $result=~s/($matchthis)/\<font color=\"red\"\>$1\<\/font\>/gs;
1.142 albertel 997: }
1.66 www 998: }
999: if ($ENV{'form.link'}) {
1.142 albertel 1000: foreach (split(/\,/,$ENV{'form.link'})) {
1.66 www 1001: my ($anchorname,$linkurl)=split(/\>/,$_);
1002: my $matchthis=$anchorname;
1003: $matchthis=~s/\_+/\\s\+/g;
1004: $result=~s/($matchthis)/\<a href=\"$linkurl\"\>$1\<\/a\>/gs;
1.142 albertel 1005: }
1.66 www 1006: }
1007: if ($ENV{'form.anchor'}) {
1008: my $anchorname=$ENV{'form.anchor'};
1009: my $matchthis=$anchorname;
1010: $matchthis=~s/\_+/\\s\+/g;
1011: $result=~s/($matchthis)/\<a name=\"$anchorname\"\>$1\<\/a\>/s;
1012: $result.=(<<"ENDSCRIPT");
1013: <script>
1014: document.location.hash='$anchorname';
1015: </script>
1016: ENDSCRIPT
1017: }
1018: return $result;
1019: }
1020:
1.79 www 1021: sub storefile {
1022: my ($file,$contents)=@_;
1023: if (my $fh=Apache::File->new('>'.$file)) {
1024: print $fh $contents;
1025: $fh->close();
1.147 albertel 1026: } else {
1027: &warning("Unable to save file $file");
1.79 www 1028: }
1029: }
1030:
1.78 www 1031: sub inserteditinfo {
1032: my ($result,$filecontents)=@_;
1033: unless ($filecontents) {
1034: $filecontents=(<<SIMPLECONTENT);
1035: <html>
1036: <head>
1037: <title>
1038: Title of Document Goes Here
1039: </title>
1040: </head>
1041: <body bgcolor="#FFFFFF">
1042:
1043: Body of Document Goes Here
1044:
1045: </body>
1046: </html>
1047: SIMPLECONTENT
1048: }
1.147 albertel 1049:
1.148 albertel 1050: $filecontents =~ s:</textarea>:</textarea>:ig;
1.147 albertel 1051: # my $editheader='<a href="#editsection">Edit below</a><hr />';
1.78 www 1052: my $editfooter=(<<ENDFOOTER);
1053: <hr />
1054: <a name="editsection" />
1055: <form method="post">
1056: <textarea cols="80" rows="40" name="filecont">$filecontents</textarea>
1057: <br />
1.147 albertel 1058: <input type="hidden" name="showmode" value="Edit" />
1.107 www 1059: <input type="submit" name="attemptclean"
1060: value="Save and then attempt to clean HTML" />
1061: <input type="submit" name="savethisfile" value="Save this" />
1.147 albertel 1062: <input type="submit" name="showmode" value="View" />
1.78 www 1063: </form>
1064: ENDFOOTER
1.147 albertel 1065: # $result=~s/(\<body[^\>]*\>)/$1$editheader/is;
1.78 www 1066: $result=~s/(\<\/body\>)/$editfooter/is;
1067: return $result;
1068: }
1069:
1.24 sakharuk 1070: sub handler {
1071: my $request=shift;
1.68 www 1072:
1.64 albertel 1073: my $target='web';
1.68 www 1074:
1.65 albertel 1075: $Apache::lonxml::debug=0;
1.68 www 1076:
1.25 sakharuk 1077: if ($ENV{'browser.mathml'}) {
1.27 albertel 1078: $request->content_type('text/xml');
1079: } else {
1080: $request->content_type('text/html');
1.25 sakharuk 1081: }
1.141 albertel 1082: &Apache::loncommon::no_cache($request);
1.27 albertel 1083: $request->send_http_header;
1.141 albertel 1084:
1.45 www 1085: return OK if $request->header_only;
1.27 albertel 1086:
1.79 www 1087:
1088: my $file=&Apache::lonnet::filelocation("",$request->uri);
1.78 www 1089: #
1090: # Edit action? Save file.
1091: #
1092: unless ($ENV{'request.state'} eq 'published') {
1.107 www 1093: if (($ENV{'form.savethisfile'}) || ($ENV{'form.attemptclean'})) {
1.79 www 1094: &storefile($file,$ENV{'form.filecont'});
1.78 www 1095: }
1096: }
1.24 sakharuk 1097: my %mystyle;
1.147 albertel 1098: my $result = '';
1.50 albertel 1099: my $filecontents=&Apache::lonnet::getfile($file);
1100: if ($filecontents == -1) {
1.78 www 1101: $result=(<<ENDNOTFOUND);
1102: <html>
1103: <head>
1104: <title>File not found</title>
1105: </head>
1106: <body bgcolor="#FFFFFF">
1107: <b>File not found: $file</b>
1108: </body>
1109: </html>
1110: ENDNOTFOUND
1.50 albertel 1111: $filecontents='';
1112: } else {
1.147 albertel 1113: unless ($ENV{'request.state'} eq 'published') {
1114: if ($ENV{'form.attemptclean'}) {
1115: $filecontents=&htmlclean($filecontents,1);
1.107 www 1116: }
1.147 albertel 1117: }
1118: if ($ENV{'form.showmode'} ne 'Edit') {
1119: $result = &Apache::lonxml::xmlparse($target,$filecontents,'',%mystyle);
1120: }
1.78 www 1121: }
1122:
1123: #
1124: # Edit action? Insert editing commands
1125: #
1126: unless ($ENV{'request.state'} eq 'published') {
1.147 albertel 1127: if ($ENV{'form.showmode'} eq 'Edit') {
1128: $result='<html><body bgcolor="#FFFFFF"></body></html>';
1.78 www 1129: $result=&inserteditinfo($result,$filecontents);
1.147 albertel 1130: }
1.66 www 1131: }
1.147 albertel 1132:
1.126 www 1133: writeallows($request->uri);
1.50 albertel 1134:
1.67 www 1135: $request->print($result);
1.64 albertel 1136:
1.45 www 1137: return OK;
1.24 sakharuk 1138: }
1.147 albertel 1139:
1.22 albertel 1140: sub debug {
1141: if ($Apache::lonxml::debug eq 1) {
1.146 albertel 1142: $|=1;
1143: print("DEBUG:".join('<br />',@_)."<br />\n");
1.22 albertel 1144: }
1145: }
1.49 albertel 1146:
1.22 albertel 1147: sub error {
1.74 albertel 1148: if (($Apache::lonxml::debug eq 1) || ($ENV{'request.state'} eq 'construct') ) {
1.146 albertel 1149: print "<b>ERROR:</b>".join('<br />',@_)."<br />\n";
1.52 albertel 1150: } else {
1151: print "<b>An Error occured while processing this resource. The instructor has been notified.</b> <br />";
1152: #notify author
1.146 albertel 1153: &Apache::lonmsg::author_res_msg($ENV{'request.filename'},join('<br />',@_));
1.52 albertel 1154: #notify course
1155: if ( $ENV{'request.course.id'} ) {
1156: my $users=$ENV{'course.'.$ENV{'request.course.id'}.'.comment.email'};
1.143 www 1157: my $declutter=&Apache::lonnet::declutter($ENV{'request.filename'});
1.52 albertel 1158: foreach my $user (split /\,/, $users) {
1159: ($user,my $domain) = split /:/, $user;
1.143 www 1160: &Apache::lonmsg::user_normal_msg($user,$domain,
1.146 albertel 1161: "Error [$declutter]",join('<br />',@_));
1.52 albertel 1162: }
1163: }
1.74 albertel 1164:
1.52 albertel 1165: #FIXME probably shouldn't have me get everything forever.
1.146 albertel 1166: &Apache::lonmsg::user_normal_msg('albertel','msu',"Error in $ENV{'request.filename'}",join('<br />',@_));
1.74 albertel 1167: #&Apache::lonmsg::user_normal_msg('albertel','103',"Error in $ENV{'request.filename'}",$_[0]);
1.52 albertel 1168: }
1.22 albertel 1169: }
1.49 albertel 1170:
1.22 albertel 1171: sub warning {
1.73 harris41 1172: if ($ENV{'request.state'} eq 'construct') {
1.146 albertel 1173: print "<b>W</b>ARNING<b>:</b>".join('<br />',@_)."<br />\n";
1.73 harris41 1174: }
1.83 albertel 1175: }
1176:
1177: sub get_param {
1178: my ($param,$parstack,$safeeval,$context) = @_;
1179: if ( ! $context ) { $context = -1; }
1180: my $args ='';
1181: if ( $#$parstack > (-2-$context) ) { $args=$$parstack[$context]; }
1.131 albertel 1182: if ( $args =~ /my \$$param=\"/ ) {
1183: return &Apache::run::run("{$args;".'return $'.$param.'}',$safeeval); #'
1184: } else {
1185: return undef;
1186: }
1.22 albertel 1187: }
1188:
1.132 albertel 1189: sub get_param_var {
1190: my ($param,$parstack,$safeeval,$context) = @_;
1191: if ( ! $context ) { $context = -1; }
1192: my $args ='';
1193: if ( $#$parstack > (-2-$context) ) { $args=$$parstack[$context]; }
1194: if ( $args !~ /my \$$param=\"/ ) { return undef; }
1195: my $value=&Apache::run::run("{$args;".'return $'.$param.'}',$safeeval); #'
1196: if ($value =~ /^[\$\@\%]/) {
1197: return &Apache::run::run("return $value",$safeeval,1);
1198: } else {
1199: return $value;
1200: }
1201: }
1202:
1.74 albertel 1203: sub register_insert {
1.75 albertel 1204: my @data = split /\n/, &Apache::lonnet::getfile('/home/httpd/lonTabs/insertlist.tab');
1.74 albertel 1205: my $i;
1.76 albertel 1206: my $tagnum=0;
1.74 albertel 1207: my @order;
1208: for ($i=0;$i < $#data; $i++) {
1209: my $line = $data[$i];
1210: if ( $line =~ /^\#/ || $line =~ /^\s*\n/) { next; }
1211: if ( $line =~ /TABLE/ ) { last; }
1.92 albertel 1212: my ($tag,$descrip,$color,$function,$show) = split(/,/, $line);
1.135 albertel 1213: if ($tag) {
1214: $insertlist{"$tagnum.tag"} = $tag;
1215: $insertlist{"$tagnum.description"} = $descrip;
1216: $insertlist{"$tagnum.color"} = $color;
1217: $insertlist{"$tagnum.function"} = $function;
1218: if (!defined($show)) { $show='yes'; }
1219: $insertlist{"$tagnum.show"}= $show;
1220: $insertlist{"$tag.num"}=$tagnum;
1221: $tagnum++;
1222: }
1.74 albertel 1223: }
1.76 albertel 1224: $i++; #skipping TABLE line
1225: $tagnum = 0;
1.74 albertel 1226: for (;$i < $#data;$i++) {
1227: my $line = $data[$i];
1.76 albertel 1228: my ($mnemonic,@which) = split(/ +/,$line);
1229: my $tag = $insertlist{"$tagnum.tag"};
1.144 matthew 1230: for (my $j=0;$j <=$#which;$j++) {
1.74 albertel 1231: if ( $which[$j] eq 'Y' ) {
1.76 albertel 1232: if ($insertlist{"$j.show"} ne 'no') {
1233: push(@{ $insertlist{"$tag.which"} },$j);
1234: }
1.74 albertel 1235: }
1236: }
1.76 albertel 1237: $tagnum++;
1.74 albertel 1238: }
1239: }
1.98 albertel 1240:
1241: sub description {
1242: my ($token)=@_;
1.138 albertel 1243: my $tagnum;
1244: my $tag=$token->[1];
1245: foreach my $namespace (reverse @Apache::lonxml::namespace) {
1246: my $testtag=$namespace.'::'.$tag;
1247: $tagnum=$insertlist{"$testtag.num"};
1248: if (defined($tagnum)) { last; }
1249: }
1250: if (!defined ($tagnum)) { $tagnum=$Apache::lonxml::insertlist{"$tag.num"}; }
1251: return $insertlist{$tagnum.'.description'};
1.98 albertel 1252: }
1.123 albertel 1253:
1254: # ----------------------------------------------------------------- whichuser
1255: # returns a list of $symb, $courseid, $domain, $name that is correct for
1256: # calls to lonnet functions for this setup.
1257: # - looks for form.grade_ parameters
1258: sub whichuser {
1.134 albertel 1259: my ($symb,$courseid,$domain,$name);
1.123 albertel 1260: if (defined($ENV{'form.grade_symb'})) {
1261: my $tmp_courseid=$ENV{'form.grade_courseid'};
1262: my $allowed=&Apache::lonnet::allowed('mgr',$tmp_courseid);
1263: if ($allowed) {
1264: $symb=$ENV{'form.grade_symb'};
1265: $courseid=$ENV{'form.grade_courseid'};
1266: $domain=$ENV{'form.grade_domain'};
1267: $name=$ENV{'form.grade_username'};
1268: }
1.134 albertel 1269: } else {
1270: $symb=&Apache::lonnet::symbread();
1271: $courseid=$ENV{'request.course.id'};
1272: $domain=$ENV{'user.domain'};
1273: $name=$ENV{'user.name'};
1.123 albertel 1274: }
1275: return ($symb,$courseid,$domain,$name);
1276: }
1277:
1.1 sakharuk 1278: 1;
1279: __END__
1.68 www 1280:
1281:
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