Annotation of loncom/xml/lonxml.pm, revision 1.148
1.2 sakharuk 1: # The LearningOnline Network with CAPA
1.3 sakharuk 2: # XML Parser Module
1.2 sakharuk 3: #
1.148 ! albertel 4: # $Id: lonxml.pm,v 1.147 2002/01/08 21:11:13 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:
466: my @stack = ();
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 $$stack['-1'] && ($#$stack > -1)) {
1.140 albertel 536: &Apache::lonxml::warning('Missing tag </'.$$stack['-1'].'> in file');
1.101 albertel 537: &end_tag($stack,$parstack,$token);
538: }
1.140 albertel 539:
540: if (exists($$style_for_target{'/'."$token->[1]"})) {
1.101 albertel 541: if ($Apache::lonxml::redirection) {
542: $Apache::lonxml::outputstack['-1'] .=
543: &recurse($$style_for_target{'/'."$token->[1]"},
544: $target,$safeeval,$style_for_target,@$parstack);
545: } else {
546: $finaloutput .= &recurse($$style_for_target{'/'."$token->[1]"},
547: $target,$safeeval,$style_for_target,
548: @$parstack);
549: }
550: } else {
551: $result = &callsub("end_$token->[1]", $target, $token, $stack,
552: $parstack, $pars,$safeeval, $style_for_target);
553: }
554: } else {
555: &Apache::lonxml::error("Unknown token event :$token->[0]:$token->[1]:");
556: }
557: #evaluate variable refs in result
558: if ($result ne "") {
559: if ( $#$parstack > -1 ) {
560: if ($Apache::lonxml::redirection) {
561: $Apache::lonxml::outputstack['-1'] .=
562: &Apache::run::evaluate($result,$safeeval,$$parstack['-1']);
563: } else {
564: $finaloutput .= &Apache::run::evaluate($result,$safeeval,
565: $$parstack['-1']);
566: }
567: } else {
568: $finaloutput .= &Apache::run::evaluate($result,$safeeval,'');
569: }
570: $result = '';
571: }
572: if ($token->[0] eq 'E') {
573: &end_tag($stack,$parstack,$token);
574: }
575: }
576: pop @$pars;
577: pop @Apache::lonxml::pwd;
578: }
579:
580: # if ($target eq 'meta') {
581: # $finaloutput.=&endredirection;
582: # }
583:
584: if (($ENV{'QUERY_STRING'}) && ($target eq 'web')) {
585: $finaloutput=&afterburn($finaloutput);
586: }
587: return $finaloutput;
588: }
1.67 www 589:
1.15 albertel 590: sub recurse {
591: my @innerstack = ();
592: my @innerparstack = ();
593: my ($newarg,$target,$safeeval,$style_for_target,@parstack) = @_;
1.16 albertel 594: my @pat = ();
1.23 albertel 595: &newparser(\@pat,\$newarg);
1.15 albertel 596: my $tokenpat;
597: my $partstring = '';
598: my $output='';
1.16 albertel 599: my $decls='';
1.140 albertel 600: &Apache::lonxml::debug("Recursing");
1.16 albertel 601: while ( $#pat > -1 ) {
602: while ($tokenpat = $pat[$#pat]->get_token) {
1.57 albertel 603: if (($tokenpat->[0] eq 'T') || ($tokenpat->[0] eq 'C') || ($tokenpat->[0] eq 'D') ) {
1.61 albertel 604: if ($metamode<1) { $partstring=$tokenpat->[1]; }
1.57 albertel 605: } elsif ($tokenpat->[0] eq 'PI') {
1.61 albertel 606: if ($metamode<1) { $partstring=$tokenpat->[2]; }
1.16 albertel 607: } elsif ($tokenpat->[0] eq 'S') {
608: push (@innerstack,$tokenpat->[1]);
609: push (@innerparstack,&parstring($tokenpat));
1.19 albertel 610: &increasedepth($tokenpat);
1.84 albertel 611: $partstring = &callsub("start_$tokenpat->[1]", $target, $tokenpat,
612: \@innerstack, \@innerparstack, \@pat,
613: $safeeval, $style_for_target);
1.16 albertel 614: } elsif ($tokenpat->[0] eq 'E') {
615: #clear out any tags that didn't end
616: while ($tokenpat->[1] ne $innerstack[$#innerstack]
1.43 albertel 617: && ($#innerstack > -1)) {
1.140 albertel 618: &Apache::lonxml::warning('Missing tag </'.$innerstack['-1'].'> in style');
1.97 albertel 619: &end_tag(\@innerstack,\@innerparstack,$tokenpat);
1.43 albertel 620: }
1.84 albertel 621: $partstring = &callsub("end_$tokenpat->[1]", $target, $tokenpat,
622: \@innerstack, \@innerparstack, \@pat,
623: $safeeval, $style_for_target);
1.57 albertel 624: } else {
625: &Apache::lonxml::error("Unknown token event :$tokenpat->[0]:$tokenpat->[1]:");
1.16 albertel 626: }
627: #pass both the variable to the style tag, and the tag we
628: #are processing inside the <definedtag>
629: if ( $partstring ne "" ) {
630: if ( $#parstack > -1 ) {
631: if ( $#innerparstack > -1 ) {
632: $decls= $parstack[$#parstack].$innerparstack[$#innerparstack];
633: } else {
634: $decls= $parstack[$#parstack];
635: }
636: } else {
637: if ( $#innerparstack > -1 ) {
638: $decls=$innerparstack[$#innerparstack];
639: } else {
640: $decls='';
641: }
642: }
643: $output .= &Apache::run::evaluate($partstring,$safeeval,$decls);
644: $partstring = '';
645: }
1.17 albertel 646: if ($tokenpat->[0] eq 'E') { pop @innerstack;pop @innerparstack;
1.19 albertel 647: &decreasedepth($tokenpat);}
1.15 albertel 648: }
1.16 albertel 649: pop @pat;
1.23 albertel 650: pop @Apache::lonxml::pwd;
1.15 albertel 651: }
1.140 albertel 652: &Apache::lonxml::debug("Exiting Recursing");
1.15 albertel 653: return $output;
1.7 albertel 654: }
655:
656: sub callsub {
1.84 albertel 657: my ($sub,$target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.7 albertel 658: my $currentstring='';
1.72 albertel 659: my $nodefault;
1.7 albertel 660: {
1.59 albertel 661: my $sub1;
1.7 albertel 662: no strict 'refs';
1.68 www 663: my $tag=$token->[1];
1.141 albertel 664: my $space=$Apache::lonxml::alltags{$tag}[-1];
1.68 www 665: if (!$space) {
1.141 albertel 666: $tag=~tr/A-Z/a-z/;
1.68 www 667: $sub=~tr/A-Z/a-z/;
1.141 albertel 668: $space=$Apache::lonxml::alltags{$tag}[-1]
1.68 www 669: }
1.97 albertel 670:
671: my $deleted=0;
672: $Apache::lonxml::curdepth=join('_',@Apache::lonxml::depthcounter);
673: if (($token->[0] eq 'S') && ($target eq 'modified')) {
674: $deleted=&Apache::edit::handle_delete($space,$target,$token,$tagstack,
675: $parstack,$parser,$safeeval,
676: $style);
677: }
678: if (!$deleted) {
679: if ($space) {
680: #&Apache::lonxml::debug("Calling sub $sub in $space $metamode<br />\n");
681: $sub1="$space\:\:$sub";
682: ($currentstring,$nodefault) = &$sub1($target,$token,$tagstack,
683: $parstack,$parser,$safeeval,
684: $style);
685: } else {
686: #&Apache::lonxml::debug("NOT Calling sub $sub in $space $metamode<br />\n");
687: if ($metamode <1) {
688: if (defined($token->[4]) && ($metamode < 1)) {
689: $currentstring = $token->[4];
690: } else {
691: $currentstring = $token->[2];
692: }
1.62 sakharuk 693: }
1.7 albertel 694: }
1.97 albertel 695: # &Apache::lonxml::debug("nodefalt:$nodefault:");
696: if ($currentstring eq '' && $nodefault eq '') {
697: if ($target eq 'edit') {
698: &Apache::lonxml::debug("doing default edit for $token->[1]");
699: if ($token->[0] eq 'S') {
700: $currentstring = &Apache::edit::tag_start($target,$token);
701: } elsif ($token->[0] eq 'E') {
702: $currentstring = &Apache::edit::tag_end($target,$token);
703: }
704: } elsif ($target eq 'modified') {
705: if ($token->[0] eq 'S') {
706: $currentstring = $token->[4];
707: $currentstring.=&Apache::edit::handle_insert();
708: } else {
709: $currentstring = $token->[2];
710: }
1.72 albertel 711: }
712: }
1.7 albertel 713: }
714: use strict 'refs';
715: }
716: return $currentstring;
1.82 ng 717: }
718:
1.96 albertel 719: sub setup_globals {
720: my ($target)=@_;
1.99 albertel 721: $Apache::lonxml::registered = 0;
1.101 albertel 722: @Apache::lonxml::pwd=();
1.124 albertel 723: @Apache::lonxml::extlinks=();
1.96 albertel 724: if ($target eq 'meta') {
725: $Apache::lonxml::redirection = 0;
726: $Apache::lonxml::metamode = 1;
727: $Apache::lonxml::evaluate = 1;
728: $Apache::lonxml::import = 0;
1.129 albertel 729: } elsif ($target eq 'answer') {
730: $Apache::lonxml::redirection = 0;
731: $Apache::lonxml::metamode = 1;
732: $Apache::lonxml::evaluate = 1;
733: $Apache::lonxml::import = 1;
1.96 albertel 734: } elsif ($target eq 'grade') {
735: &startredirection;
736: $Apache::lonxml::metamode = 0;
737: $Apache::lonxml::evaluate = 1;
738: $Apache::lonxml::import = 1;
739: } elsif ($target eq 'modified') {
740: $Apache::lonxml::redirection = 0;
741: $Apache::lonxml::metamode = 0;
742: $Apache::lonxml::evaluate = 0;
743: $Apache::lonxml::import = 0;
744: } elsif ($target eq 'edit') {
745: $Apache::lonxml::redirection = 0;
746: $Apache::lonxml::metamode = 0;
747: $Apache::lonxml::evaluate = 0;
748: $Apache::lonxml::import = 0;
749: } else {
750: $Apache::lonxml::redirection = 0;
751: $Apache::lonxml::metamode = 0;
752: $Apache::lonxml::evaluate = 1;
753: $Apache::lonxml::import = 1;
754: }
755: }
756:
1.82 ng 757: sub init_safespace {
758: my ($target,$safeeval,$safehole,$safeinit) = @_;
759: $safeeval->permit("entereval");
760: $safeeval->permit(":base_math");
761: $safeeval->permit("sort");
762: $safeeval->deny(":base_io");
1.102 albertel 763: $safehole->wrap(\&Apache::scripttag::xmlparse,$safeeval,'&xmlparse');
1.82 ng 764: $safehole->wrap(\&Apache::lonnet::EXT,$safeeval,'&EXT');
765:
766: $safehole->wrap(\&Math::Cephes::asin,$safeeval,'&asin');
767: $safehole->wrap(\&Math::Cephes::acos,$safeeval,'&acos');
768: $safehole->wrap(\&Math::Cephes::atan,$safeeval,'&atan');
769: $safehole->wrap(\&Math::Cephes::sinh,$safeeval,'&sinh');
770: $safehole->wrap(\&Math::Cephes::cosh,$safeeval,'&cosh');
771: $safehole->wrap(\&Math::Cephes::tanh,$safeeval,'&tanh');
772: $safehole->wrap(\&Math::Cephes::asinh,$safeeval,'&asinh');
773: $safehole->wrap(\&Math::Cephes::acosh,$safeeval,'&acosh');
774: $safehole->wrap(\&Math::Cephes::atanh,$safeeval,'&atanh');
775: $safehole->wrap(\&Math::Cephes::erf,$safeeval,'&erf');
776: $safehole->wrap(\&Math::Cephes::erfc,$safeeval,'&erfc');
777: $safehole->wrap(\&Math::Cephes::j0,$safeeval,'&j0');
778: $safehole->wrap(\&Math::Cephes::j1,$safeeval,'&j1');
779: $safehole->wrap(\&Math::Cephes::jn,$safeeval,'&jn');
780: $safehole->wrap(\&Math::Cephes::jv,$safeeval,'&jv');
781: $safehole->wrap(\&Math::Cephes::y0,$safeeval,'&y0');
782: $safehole->wrap(\&Math::Cephes::y1,$safeeval,'&y1');
783: $safehole->wrap(\&Math::Cephes::yn,$safeeval,'&yn');
784: $safehole->wrap(\&Math::Cephes::yv,$safeeval,'&yv');
1.91 ng 785: $safehole->wrap(\&Math::Random::random_beta,$safeeval,'&math_random_beta');
786: $safehole->wrap(\&Math::Random::random_chi_square,$safeeval,'&math_random_chi_square');
787: $safehole->wrap(\&Math::Random::random_exponential,$safeeval,'&math_random_exponential');
788: $safehole->wrap(\&Math::Random::random_f,$safeeval,'&math_random_f');
789: $safehole->wrap(\&Math::Random::random_gamma,$safeeval,'&math_random_gamma');
790: $safehole->wrap(\&Math::Random::random_multivariate_normal,$safeeval,'&math_random_multivariate_normal');
791: $safehole->wrap(\&Math::Random::random_multinomial,$safeeval,'&math_random_multinomial');
792: $safehole->wrap(\&Math::Random::random_noncentral_chi_square,$safeeval,'&math_random_noncentral_chi_square');
793: $safehole->wrap(\&Math::Random::random_noncentral_f,$safeeval,'&math_random_noncentral_f');
794: $safehole->wrap(\&Math::Random::random_normal,$safeeval,'&math_random_normal');
795: $safehole->wrap(\&Math::Random::random_permutation,$safeeval,'&math_random_permutation');
1.93 ng 796: $safehole->wrap(\&Math::Random::random_permuted_index,$safeeval,'&math_random_permuted_index');
1.91 ng 797: $safehole->wrap(\&Math::Random::random_uniform,$safeeval,'&math_random_uniform');
798: $safehole->wrap(\&Math::Random::random_poisson,$safeeval,'&math_random_poisson');
799: $safehole->wrap(\&Math::Random::random_uniform_integer,$safeeval,'&math_random_uniform_integer');
800: $safehole->wrap(\&Math::Random::random_negative_binomial,$safeeval,'&math_random_negative_binomial');
801: $safehole->wrap(\&Math::Random::random_binomial,$safeeval,'&math_random_binomial');
802: $safehole->wrap(\&Math::Random::random_seed_from_phrase,$safeeval,'&random_seed_from_phrase');
803: $safehole->wrap(\&Math::Random::random_set_seed_from_phrase,$safeeval,'&random_set_seed_from_phrase');
804: $safehole->wrap(\&Math::Random::random_get_seed,$safeeval,'&random_get_seed');
805: $safehole->wrap(\&Math::Random::random_set_seed,$safeeval,'&random_set_seed');
806:
1.82 ng 807: #need to inspect this class of ops
808: # $safeeval->deny(":base_orig");
1.91 ng 809: $safeinit .= ';$external::target="'.$target.'";';
1.121 albertel 810: my $rndseed;
1.123 albertel 811: my ($symb,$courseid,$domain,$name) = &Apache::lonxml::whichuser();
812: $rndseed=&Apache::lonnet::rndseed($symb,$courseid,$domain,$name);
1.121 albertel 813: $safeinit .= ';$external::randomseed='.$rndseed.';';
1.82 ng 814: &Apache::run::run($safeinit,$safeeval);
1.17 albertel 815: }
816:
1.55 albertel 817: sub startredirection {
818: $Apache::lonxml::redirection++;
819: push (@Apache::lonxml::outputstack, '');
820: }
821:
822: sub endredirection {
823: if (!$Apache::lonxml::redirection) {
1.72 albertel 824: &Apache::lonxml::error("Endredirection was called, before a startredirection, perhaps you have unbalanced tags. Some debuging information:".join ":",caller);
1.55 albertel 825: return '';
826: }
827: $Apache::lonxml::redirection--;
828: pop @Apache::lonxml::outputstack;
1.97 albertel 829: }
830:
831: sub end_tag {
832: my ($tagstack,$parstack,$token)=@_;
833: pop(@$tagstack);
834: pop(@$parstack);
835: &decreasedepth($token);
1.55 albertel 836: }
837:
1.17 albertel 838: sub initdepth {
839: @Apache::lonxml::depthcounter=();
840: $Apache::lonxml::depth=-1;
841: $Apache::lonxml::olddepth=-1;
842: }
843:
844: sub increasedepth {
1.19 albertel 845: my ($token) = @_;
1.17 albertel 846: $Apache::lonxml::depth++;
847: $Apache::lonxml::depthcounter[$Apache::lonxml::depth]++;
848: if ($Apache::lonxml::depthcounter[$Apache::lonxml::depth]==1) {
849: $Apache::lonxml::olddepth=$Apache::lonxml::depth;
850: }
1.42 albertel 851: my $curdepth=join('_',@Apache::lonxml::depthcounter);
1.64 albertel 852: &Apache::lonxml::debug("s $Apache::lonxml::depth : $Apache::lonxml::olddepth : $curdepth : $token->[1]\n");
1.54 albertel 853: #print "<br />s $Apache::lonxml::depth : $Apache::lonxml::olddepth : $curdepth : $token->[1]\n";
1.17 albertel 854: }
855:
856: sub decreasedepth {
1.19 albertel 857: my ($token) = @_;
1.17 albertel 858: $Apache::lonxml::depth--;
1.36 albertel 859: if ($Apache::lonxml::depth<$Apache::lonxml::olddepth-1) {
860: $#Apache::lonxml::depthcounter--;
861: $Apache::lonxml::olddepth=$Apache::lonxml::depth+1;
862: }
1.43 albertel 863: if ( $Apache::lonxml::depth < -1) {
1.140 albertel 864: &Apache::lonxml::warning("Missing tags, unable to properly run file.");
1.43 albertel 865: $Apache::lonxml::depth='-1';
866: }
1.42 albertel 867: my $curdepth=join('_',@Apache::lonxml::depthcounter);
1.64 albertel 868: &Apache::lonxml::debug("e $Apache::lonxml::depth : $Apache::lonxml::olddepth : $token->[1] : $curdepth\n");
1.54 albertel 869: #print "<br />e $Apache::lonxml::depth : $Apache::lonxml::olddepth : $token->[1] : $curdepth\n";
1.1 sakharuk 870: }
1.19 albertel 871:
872: sub get_all_text {
873:
874: my($tag,$pars)= @_;
875: my $depth=0;
876: my $token;
877: my $result='';
1.57 albertel 878: if ( $tag =~ m:^/: ) {
879: my $tag=substr($tag,1);
880: # &Apache::lonxml::debug("have:$tag:");
881: while (($depth >=0) && ($token = $pars->get_token)) {
882: # &Apache::lonxml::debug("e token:$token->[0]:$depth:$token->[1]");
883: if (($token->[0] eq 'T')||($token->[0] eq 'C')||($token->[0] eq 'D')) {
884: $result.=$token->[1];
885: } elsif ($token->[0] eq 'PI') {
886: $result.=$token->[2];
887: } elsif ($token->[0] eq 'S') {
888: if ($token->[1] eq $tag) { $depth++; }
889: $result.=$token->[4];
890: } elsif ($token->[0] eq 'E') {
891: if ( $token->[1] eq $tag) { $depth--; }
892: #skip sending back the last end tag
893: if ($depth > -1) { $result.=$token->[2]; } else {
894: $pars->unget_token($token);
895: }
896: }
897: }
898: } else {
899: while ($token = $pars->get_token) {
900: # &Apache::lonxml::debug("s token:$token->[0]:$depth:$token->[1]");
901: if (($token->[0] eq 'T')||($token->[0] eq 'C')||($token->[0] eq 'D')) {
902: $result.=$token->[1];
903: } elsif ($token->[0] eq 'PI') {
904: $result.=$token->[2];
905: } elsif ($token->[0] eq 'S') {
906: if ( $token->[1] eq $tag) {
907: $pars->unget_token($token); last;
908: } else {
909: $result.=$token->[4];
910: }
911: } elsif ($token->[0] eq 'E') {
912: $result.=$token->[2];
1.36 albertel 913: }
1.19 albertel 914: }
915: }
1.49 albertel 916: # &Apache::lonxml::debug("Exit:$result:");
1.19 albertel 917: return $result
918: }
919:
1.23 albertel 920: sub newparser {
921: my ($parser,$contentref,$dir) = @_;
922: push (@$parser,HTML::TokeParser->new($contentref));
1.56 albertel 923: $$parser['-1']->xml_mode('1');
1.23 albertel 924: if ( $dir eq '' ) {
925: push (@Apache::lonxml::pwd, $Apache::lonxml::pwd[$#Apache::lonxml::pwd]);
926: } else {
927: push (@Apache::lonxml::pwd, $dir);
928: }
929: # &Apache::lonxml::debug("pwd:$#Apache::lonxml::pwd");
930: # &Apache::lonxml::debug("pwd:$Apache::lonxml::pwd[$#Apache::lonxml::pwd]");
931: }
1.1 sakharuk 932:
1.8 albertel 933: sub parstring {
934: my ($token) = @_;
935: my $temp='';
1.142 albertel 936: foreach (@{$token->[3]}) {
1.35 www 937: unless ($_=~/\W/) {
1.42 albertel 938: my $val=$token->[2]->{$_};
1.53 albertel 939: $val =~ s/([\%\@\\])/\\$1/g;
1.51 albertel 940: #if ($val =~ m/^[\%\@]/) { $val="\\".$val; }
1.42 albertel 941: $temp .= "my \$$_=\"$val\";"
1.20 albertel 942: }
1.142 albertel 943: }
1.8 albertel 944: return $temp;
945: }
1.22 albertel 946:
1.34 www 947: sub writeallows {
1.126 www 948: unless ($#extlinks>=0) { return; }
1.34 www 949: my $thisurl='/res/'.&Apache::lonnet::declutter(shift);
1.111 www 950: if ($ENV{'httpref.'.$thisurl}) {
951: $thisurl=$ENV{'httpref.'.$thisurl};
952: }
1.34 www 953: my $thisdir=$thisurl;
954: $thisdir=~s/\/[^\/]+$//;
955: my %httpref=();
1.142 albertel 956: foreach (@extlinks) {
1.34 www 957: $httpref{'httpref.'.
1.125 www 958: &Apache::lonnet::hreflocation($thisdir,$_)}=$thisurl;
1.142 albertel 959: }
1.126 www 960: @extlinks=();
1.34 www 961: &Apache::lonnet::appenv(%httpref);
962: }
963:
1.66 www 964: #
965: # Afterburner handles anchors, highlights and links
966: #
967: sub afterburn {
968: my $result=shift;
1.142 albertel 969: foreach (split(/&/,$ENV{'QUERY_STRING'})) {
1.66 www 970: my ($name, $value) = split(/=/,$_);
971: $value =~ tr/+/ /;
972: $value =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
973: if (($name eq 'highlight')||($name eq 'anchor')||($name eq 'link')) {
974: unless ($ENV{'form.'.$name}) {
975: $ENV{'form.'.$name}=$value;
976: }
977: }
1.142 albertel 978: }
1.66 www 979: if ($ENV{'form.highlight'}) {
1.142 albertel 980: foreach (split(/\,/,$ENV{'form.highlight'})) {
1.66 www 981: my $anchorname=$_;
982: my $matchthis=$anchorname;
983: $matchthis=~s/\_+/\\s\+/g;
984: $result=~s/($matchthis)/\<font color=\"red\"\>$1\<\/font\>/gs;
1.142 albertel 985: }
1.66 www 986: }
987: if ($ENV{'form.link'}) {
1.142 albertel 988: foreach (split(/\,/,$ENV{'form.link'})) {
1.66 www 989: my ($anchorname,$linkurl)=split(/\>/,$_);
990: my $matchthis=$anchorname;
991: $matchthis=~s/\_+/\\s\+/g;
992: $result=~s/($matchthis)/\<a href=\"$linkurl\"\>$1\<\/a\>/gs;
1.142 albertel 993: }
1.66 www 994: }
995: if ($ENV{'form.anchor'}) {
996: my $anchorname=$ENV{'form.anchor'};
997: my $matchthis=$anchorname;
998: $matchthis=~s/\_+/\\s\+/g;
999: $result=~s/($matchthis)/\<a name=\"$anchorname\"\>$1\<\/a\>/s;
1000: $result.=(<<"ENDSCRIPT");
1001: <script>
1002: document.location.hash='$anchorname';
1003: </script>
1004: ENDSCRIPT
1005: }
1006: return $result;
1007: }
1008:
1.79 www 1009: sub storefile {
1010: my ($file,$contents)=@_;
1011: if (my $fh=Apache::File->new('>'.$file)) {
1012: print $fh $contents;
1013: $fh->close();
1.147 albertel 1014: } else {
1015: &warning("Unable to save file $file");
1.79 www 1016: }
1017: }
1018:
1.78 www 1019: sub inserteditinfo {
1020: my ($result,$filecontents)=@_;
1021: unless ($filecontents) {
1022: $filecontents=(<<SIMPLECONTENT);
1023: <html>
1024: <head>
1025: <title>
1026: Title of Document Goes Here
1027: </title>
1028: </head>
1029: <body bgcolor="#FFFFFF">
1030:
1031: Body of Document Goes Here
1032:
1033: </body>
1034: </html>
1035: SIMPLECONTENT
1036: }
1.147 albertel 1037:
1.148 ! albertel 1038: $filecontents =~ s:</textarea>:</textarea>:ig;
1.147 albertel 1039: # my $editheader='<a href="#editsection">Edit below</a><hr />';
1.78 www 1040: my $editfooter=(<<ENDFOOTER);
1041: <hr />
1042: <a name="editsection" />
1043: <form method="post">
1044: <textarea cols="80" rows="40" name="filecont">$filecontents</textarea>
1045: <br />
1.147 albertel 1046: <input type="hidden" name="showmode" value="Edit" />
1.107 www 1047: <input type="submit" name="attemptclean"
1048: value="Save and then attempt to clean HTML" />
1049: <input type="submit" name="savethisfile" value="Save this" />
1.147 albertel 1050: <input type="submit" name="showmode" value="View" />
1.78 www 1051: </form>
1052: ENDFOOTER
1.147 albertel 1053: # $result=~s/(\<body[^\>]*\>)/$1$editheader/is;
1.78 www 1054: $result=~s/(\<\/body\>)/$editfooter/is;
1055: return $result;
1056: }
1057:
1.147 albertel 1058: sub editbutton {
1059: my ($result) = @_;
1060: my $button=(<<EDITBUTTON);
1061: <form method="post">
1062: <input type="submit" name="showmode" value="Edit" />
1063: </form>
1064: EDITBUTTON
1065: $result=~s/(\<\/body\>)/$button/is;
1066: return $result;
1067: }
1068:
1.24 sakharuk 1069: sub handler {
1070: my $request=shift;
1.68 www 1071:
1.64 albertel 1072: my $target='web';
1.68 www 1073:
1.65 albertel 1074: $Apache::lonxml::debug=0;
1.68 www 1075:
1.25 sakharuk 1076: if ($ENV{'browser.mathml'}) {
1.27 albertel 1077: $request->content_type('text/xml');
1078: } else {
1079: $request->content_type('text/html');
1.25 sakharuk 1080: }
1.141 albertel 1081: &Apache::loncommon::no_cache($request);
1.27 albertel 1082: $request->send_http_header;
1.141 albertel 1083:
1.45 www 1084: return OK if $request->header_only;
1.27 albertel 1085:
1.79 www 1086:
1087: my $file=&Apache::lonnet::filelocation("",$request->uri);
1.78 www 1088: #
1089: # Edit action? Save file.
1090: #
1091: unless ($ENV{'request.state'} eq 'published') {
1.107 www 1092: if (($ENV{'form.savethisfile'}) || ($ENV{'form.attemptclean'})) {
1.79 www 1093: &storefile($file,$ENV{'form.filecont'});
1.78 www 1094: }
1095: }
1.24 sakharuk 1096: my %mystyle;
1.147 albertel 1097: my $result = '';
1.50 albertel 1098: my $filecontents=&Apache::lonnet::getfile($file);
1099: if ($filecontents == -1) {
1.78 www 1100: $result=(<<ENDNOTFOUND);
1101: <html>
1102: <head>
1103: <title>File not found</title>
1104: </head>
1105: <body bgcolor="#FFFFFF">
1106: <b>File not found: $file</b>
1107: </body>
1108: </html>
1109: ENDNOTFOUND
1.50 albertel 1110: $filecontents='';
1111: } else {
1.147 albertel 1112: unless ($ENV{'request.state'} eq 'published') {
1113: if ($ENV{'form.attemptclean'}) {
1114: $filecontents=&htmlclean($filecontents,1);
1.107 www 1115: }
1.147 albertel 1116: }
1117: if ($ENV{'form.showmode'} ne 'Edit') {
1118: $result = &Apache::lonxml::xmlparse($target,$filecontents,'',%mystyle);
1119: }
1.78 www 1120: }
1121:
1122: #
1123: # Edit action? Insert editing commands
1124: #
1125: unless ($ENV{'request.state'} eq 'published') {
1.147 albertel 1126: if ($ENV{'form.showmode'} eq 'Edit') {
1127: $result='<html><body bgcolor="#FFFFFF"></body></html>';
1.78 www 1128: $result=&inserteditinfo($result,$filecontents);
1.147 albertel 1129: } else {
1130: $result = &editbutton($result);
1131: }
1.66 www 1132: }
1.147 albertel 1133:
1.126 www 1134: writeallows($request->uri);
1.50 albertel 1135:
1.67 www 1136: $request->print($result);
1.64 albertel 1137:
1.45 www 1138: return OK;
1.24 sakharuk 1139: }
1.147 albertel 1140:
1.22 albertel 1141: sub debug {
1142: if ($Apache::lonxml::debug eq 1) {
1.146 albertel 1143: $|=1;
1144: print("DEBUG:".join('<br />',@_)."<br />\n");
1.22 albertel 1145: }
1146: }
1.49 albertel 1147:
1.22 albertel 1148: sub error {
1.74 albertel 1149: if (($Apache::lonxml::debug eq 1) || ($ENV{'request.state'} eq 'construct') ) {
1.146 albertel 1150: print "<b>ERROR:</b>".join('<br />',@_)."<br />\n";
1.52 albertel 1151: } else {
1152: print "<b>An Error occured while processing this resource. The instructor has been notified.</b> <br />";
1153: #notify author
1.146 albertel 1154: &Apache::lonmsg::author_res_msg($ENV{'request.filename'},join('<br />',@_));
1.52 albertel 1155: #notify course
1156: if ( $ENV{'request.course.id'} ) {
1157: my $users=$ENV{'course.'.$ENV{'request.course.id'}.'.comment.email'};
1.143 www 1158: my $declutter=&Apache::lonnet::declutter($ENV{'request.filename'});
1.52 albertel 1159: foreach my $user (split /\,/, $users) {
1160: ($user,my $domain) = split /:/, $user;
1.143 www 1161: &Apache::lonmsg::user_normal_msg($user,$domain,
1.146 albertel 1162: "Error [$declutter]",join('<br />',@_));
1.52 albertel 1163: }
1164: }
1.74 albertel 1165:
1.52 albertel 1166: #FIXME probably shouldn't have me get everything forever.
1.146 albertel 1167: &Apache::lonmsg::user_normal_msg('albertel','msu',"Error in $ENV{'request.filename'}",join('<br />',@_));
1.74 albertel 1168: #&Apache::lonmsg::user_normal_msg('albertel','103',"Error in $ENV{'request.filename'}",$_[0]);
1.52 albertel 1169: }
1.22 albertel 1170: }
1.49 albertel 1171:
1.22 albertel 1172: sub warning {
1.73 harris41 1173: if ($ENV{'request.state'} eq 'construct') {
1.146 albertel 1174: print "<b>W</b>ARNING<b>:</b>".join('<br />',@_)."<br />\n";
1.73 harris41 1175: }
1.83 albertel 1176: }
1177:
1178: sub get_param {
1179: my ($param,$parstack,$safeeval,$context) = @_;
1180: if ( ! $context ) { $context = -1; }
1181: my $args ='';
1182: if ( $#$parstack > (-2-$context) ) { $args=$$parstack[$context]; }
1.131 albertel 1183: if ( $args =~ /my \$$param=\"/ ) {
1184: return &Apache::run::run("{$args;".'return $'.$param.'}',$safeeval); #'
1185: } else {
1186: return undef;
1187: }
1.22 albertel 1188: }
1189:
1.132 albertel 1190: sub get_param_var {
1191: my ($param,$parstack,$safeeval,$context) = @_;
1192: if ( ! $context ) { $context = -1; }
1193: my $args ='';
1194: if ( $#$parstack > (-2-$context) ) { $args=$$parstack[$context]; }
1195: if ( $args !~ /my \$$param=\"/ ) { return undef; }
1196: my $value=&Apache::run::run("{$args;".'return $'.$param.'}',$safeeval); #'
1197: if ($value =~ /^[\$\@\%]/) {
1198: return &Apache::run::run("return $value",$safeeval,1);
1199: } else {
1200: return $value;
1201: }
1202: }
1203:
1.74 albertel 1204: sub register_insert {
1.75 albertel 1205: my @data = split /\n/, &Apache::lonnet::getfile('/home/httpd/lonTabs/insertlist.tab');
1.74 albertel 1206: my $i;
1.76 albertel 1207: my $tagnum=0;
1.74 albertel 1208: my @order;
1209: for ($i=0;$i < $#data; $i++) {
1210: my $line = $data[$i];
1211: if ( $line =~ /^\#/ || $line =~ /^\s*\n/) { next; }
1212: if ( $line =~ /TABLE/ ) { last; }
1.92 albertel 1213: my ($tag,$descrip,$color,$function,$show) = split(/,/, $line);
1.135 albertel 1214: if ($tag) {
1215: $insertlist{"$tagnum.tag"} = $tag;
1216: $insertlist{"$tagnum.description"} = $descrip;
1217: $insertlist{"$tagnum.color"} = $color;
1218: $insertlist{"$tagnum.function"} = $function;
1219: if (!defined($show)) { $show='yes'; }
1220: $insertlist{"$tagnum.show"}= $show;
1221: $insertlist{"$tag.num"}=$tagnum;
1222: $tagnum++;
1223: }
1.74 albertel 1224: }
1.76 albertel 1225: $i++; #skipping TABLE line
1226: $tagnum = 0;
1.74 albertel 1227: for (;$i < $#data;$i++) {
1228: my $line = $data[$i];
1.76 albertel 1229: my ($mnemonic,@which) = split(/ +/,$line);
1230: my $tag = $insertlist{"$tagnum.tag"};
1.144 matthew 1231: for (my $j=0;$j <=$#which;$j++) {
1.74 albertel 1232: if ( $which[$j] eq 'Y' ) {
1.76 albertel 1233: if ($insertlist{"$j.show"} ne 'no') {
1234: push(@{ $insertlist{"$tag.which"} },$j);
1235: }
1.74 albertel 1236: }
1237: }
1.76 albertel 1238: $tagnum++;
1.74 albertel 1239: }
1240: }
1.98 albertel 1241:
1242: sub description {
1243: my ($token)=@_;
1.138 albertel 1244: my $tagnum;
1245: my $tag=$token->[1];
1246: foreach my $namespace (reverse @Apache::lonxml::namespace) {
1247: my $testtag=$namespace.'::'.$tag;
1248: $tagnum=$insertlist{"$testtag.num"};
1249: if (defined($tagnum)) { last; }
1250: }
1251: if (!defined ($tagnum)) { $tagnum=$Apache::lonxml::insertlist{"$tag.num"}; }
1252: return $insertlist{$tagnum.'.description'};
1.98 albertel 1253: }
1.123 albertel 1254:
1255: # ----------------------------------------------------------------- whichuser
1256: # returns a list of $symb, $courseid, $domain, $name that is correct for
1257: # calls to lonnet functions for this setup.
1258: # - looks for form.grade_ parameters
1259: sub whichuser {
1.134 albertel 1260: my ($symb,$courseid,$domain,$name);
1.123 albertel 1261: if (defined($ENV{'form.grade_symb'})) {
1262: my $tmp_courseid=$ENV{'form.grade_courseid'};
1263: my $allowed=&Apache::lonnet::allowed('mgr',$tmp_courseid);
1264: if ($allowed) {
1265: $symb=$ENV{'form.grade_symb'};
1266: $courseid=$ENV{'form.grade_courseid'};
1267: $domain=$ENV{'form.grade_domain'};
1268: $name=$ENV{'form.grade_username'};
1269: }
1.134 albertel 1270: } else {
1271: $symb=&Apache::lonnet::symbread();
1272: $courseid=$ENV{'request.course.id'};
1273: $domain=$ENV{'user.domain'};
1274: $name=$ENV{'user.name'};
1.123 albertel 1275: }
1276: return ($symb,$courseid,$domain,$name);
1277: }
1278:
1.1 sakharuk 1279: 1;
1280: __END__
1.68 www 1281:
1282:
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