1: # The LearningOnline Network with CAPA
2: # <script> definiton
3: #
4: # $Id: scripttag.pm,v 1.166 2012/08/07 14:50:17 raeburn Exp $
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:
29: package Apache::scripttag;
30:
31: use strict;
32: use Apache::lonnet;
33: use Apache::lonlocal;
34: use Apache::style();
35:
36: #Globals
37: # this used to pass around the standard callsub arguments to a tag func
38: # so xmlparse can reenter the inner_xmlparse loop.
39:
40: @Apache::scripttag::parser_env = ();
41: BEGIN {
42: &Apache::lonxml::register('Apache::scripttag',
43: ('script','scriptlib','parserlib','import',
44: 'window','windowlink','togglebox','display','storetc','physnet',
45: 'standalone','comment','num','parse','algebra',
46: 'LONCAPA_INTERNAL_TURN_STYLE_ON',
47: 'LONCAPA_INTERNAL_TURN_STYLE_OFF'));
48: }
49:
50: sub start_LONCAPA_INTERNAL_TURN_STYLE_ON {
51: $Apache::lonxml::usestyle=1;
52: $Apache::lonxml::style_values='';
53: return ('','no');
54: }
55:
56: sub end_LONCAPA_INTERNAL_TURN_STYLE_ON {
57: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
58: my $end=&Apache::lonxml::get_param('end',$parstack,$safeeval);
59: if (defined($end)) {
60: &Apache::lonxml::end_tag($tagstack,$parstack,$token);
61: }
62: return ('','no');
63: }
64:
65: sub start_LONCAPA_INTERNAL_TURN_STYLE_OFF {
66: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
67: $Apache::lonxml::usestyle=0;
68: my $end=&Apache::lonxml::get_param('end',$parstack,$safeeval);
69: if (!$end) {
70: $Apache::lonxml::style_values=$$parstack[-1];
71: $Apache::lonxml::style_end_values=$$parstack[-1];
72: } else {
73: $Apache::lonxml::style_values=$Apache::lonxml::style_end_values;
74: $Apache::lonxml::style_end_values='';
75: }
76: return ('','no');
77: }
78:
79: sub end_LONCAPA_INTERNAL_TURN_STYLE_OFF {
80: return ('','no');
81: }
82:
83: sub start_script {
84: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
85: @Apache::scripttag::parser_env = @_;
86: my $result='';
87: my $type= &Apache::lonxml::get_param('type',$parstack,$safeeval);
88: &Apache::lonxml::debug("found type of $type");
89: if ($type eq "loncapa/perl") {
90: if ( $target eq "modified" ) {
91: $result=$token->[4].&Apache::edit::modifiedfield('/script',$parser);
92: } elsif ( $target eq 'web' || $target eq 'tex' ||
93: $target eq 'grade' || $target eq 'webgrade' ||
94: $target eq 'answer' || $target eq 'analyze' ) {
95: my $bodytext=&Apache::lonxml::get_all_text_unbalanced("/script",$parser);
96: if (!$Apache::lonxml::default_homework_loaded) {
97: &Apache::lonxml::default_homework_load($safeeval);
98: }
99: &Apache::run::run($bodytext,$safeeval);
100: if (($target eq 'answer') &&
101: ($env{'form.answer_output_mode'} ne 'tex') &&
102: ($Apache::lonhomework::viewgrades == 'F')) {
103: $Apache::lonxml::evaluate--;
104: my (undef,undef,$udom,$uname)=&Apache::lonnet::whichuser();
105: $uname =~s/\W//g;
106: $udom =~s/\W//g;
107: my $function_name =
108: join('_','LONCAPA_scriptvars',$uname,$udom,
109: $env{'form.counter'},$Apache::lonxml::curdepth);
110: &Apache::lonxml::add_script_result(
111: &Apache::loncommon::modal_adhoc_window($function_name,500,500,
112: '<pre style="background-color:#ffffff;">'.
113: &Apache::run::dump($target,$safeeval).'</pre>',
114: &mt('Script Vars'))."<br />");
115: }
116: } elsif ($target eq "edit" ) {
117: #&Apache::run::run($bodytext,$safeeval);
118: #$result="<br /> <$token->[1]> output: <br />$bodytext<br />Source:<br />";
119: my $bodytext=&Apache::lonxml::get_all_text_unbalanced("/script",$parser);
120: $result=&Apache::edit::tag_start($target,$token,'Script');
121: $result.=&Apache::edit::editfield($token->[1],$bodytext,'',80,4);
122: } elsif ($target eq 'meta') {
123: my $bodytext=&Apache::lonxml::get_all_text_unbalanced("/script",$parser);
124: }
125: } else {
126: my $bodytext=&Apache::lonxml::get_all_text_unbalanced("/script",$parser);
127: if ($target ne "meta" && $target ne 'tex' && $target ne 'answer') {
128: $result = $token->[4];
129: $result.=$bodytext;
130: if ($type eq "text/javascript") {
131: my $src=&Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
132: if (($src =~ /\.js$/) && ($src !~ m{^(/|https?://)})) {
133: my ($path,$scriptname) = ($src =~ m{^(.+)/([^/]*)$});
134: my $docuri =
135: $Apache::lonnet::env{'request.noversionuri'};
136: my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
137: my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
138: if ($docuri =~ m{^(\Q/uploaded/$cdom/$cnum\E)/(docs/.*/)[^/]+$}) {
139: my $prefix = $1;
140: my $relpath = $2;
141: my $cleanrelpath;
142: foreach my $dir (split(/\//,$relpath.$path)) {
143: next if ($dir eq '.');
144: if ($dir eq '..') {
145: $cleanrelpath =~ s{([^/]+/)$}{};
146: } else {
147: $cleanrelpath .= $dir.'/';
148: }
149: }
150: $cleanrelpath =~ s{/$}{};
151: if ($cleanrelpath ne '') {
152: $src = $prefix.'/'.$cleanrelpath.'/'.$scriptname;
153: } else {
154: $src = $prefix.'/'.$scriptname;
155: }
156: if ($src ne '') {
157: &Apache::lonxml::extlink($src);
158: }
159: }
160: }
161: }
162: }
163: }
164: return $result;
165: }
166:
167: sub end_script {
168: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
169: if ( $target eq "meta" ) { return ''; }
170: my $type = &Apache::lonxml::get_param('type',$parstack,$safeeval);
171: my $result='';
172: #other script blocks need to survive
173: if ($type ne "loncapa/perl" && $target ne 'tex') {
174: return $token->[2];
175: } elsif ($target eq 'edit' ) {
176: return &Apache::edit::end_table();
177: } elsif ($target eq 'answer') {
178: $Apache::lonxml::evaluate++;
179: }
180: return '';
181: }
182:
183: sub start_display {
184: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
185: @Apache::scripttag::parser_env = @_;
186: my $result;
187:
188: if ( $target eq "modified" ) {
189: $result=$token->[4].&Apache::edit::modifiedfield("/display",$parser);
190: } elsif ( $target eq 'web' || $target eq 'tex' ||
191: $target eq 'grade' || $target eq 'webgrade' ||
192: $target eq 'answer' || $target eq 'analyze') {
193: my $bodytext=&Apache::lonxml::get_all_text_unbalanced("/display",$parser);
194: if (!$Apache::lonxml::default_homework_loaded) {
195: &Apache::lonxml::default_homework_load($safeeval);
196: }
197: $result=&Apache::run::run($bodytext,$safeeval);
198: if ($target eq 'grade' || $target eq 'answer' ||
199: $target eq 'analyze') {
200: # grade/answer/analyxe should produce no output but if we
201: # are redirecting, the redirecter should know what to do
202: # with the output
203: if (!$Apache::lonxml::redirection) { $result=''; }
204: }
205: $Apache::lonxml::post_evaluate=0;
206: } elsif ($target eq "edit" ) {
207: my $bodytext=&Apache::lonxml::get_all_text_unbalanced("/display",$parser);
208: #$result =
209: # "<br /> <$token->[1]> output: <br />$bodytext<br />Source:<br />";
210: #$result.=&Apache::edit::editfield($token->[1],$bodytext,'',40,1);
211: $result=&Apache::edit::tag_start($target,$token,'Script With Display');
212: $result.=&Apache::edit::editfield($token->[1],$bodytext,'',80,1)
213: } elsif ($target eq 'meta') {
214: my $bodytext=&Apache::lonxml::get_all_text_unbalanced("/display",$parser);
215: }
216: return $result;
217: }
218:
219: sub end_display {
220: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
221: if ($target eq 'edit' ) { return &Apache::edit::end_table(); }
222: return '';
223: }
224:
225: sub start_scriptlib {
226: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
227: my $bodytext;
228: my $result ='';
229: my $error='';
230:
231: if ($target eq 'web' || $target eq 'tex' || $target eq 'grade' ||
232: $target eq 'meta' || $target eq 'edit' || $target eq 'answer' ||
233: $target eq 'analyze' || $target eq 'webgrade') {
234: $bodytext=$$parser[$#$parser]->get_text("/scriptlib");
235: $bodytext=&Apache::run::evaluate($bodytext,$safeeval,
236: $$parstack[$#$parstack]);
237: my $location=&Apache::lonnet::filelocation($Apache::lonxml::pwd['-1'],
238: $bodytext);
239: my $script=&Apache::lonnet::getfile($location);
240: if ($script == -1) {
241: if ($target eq 'edit') {
242: $error='</tr><tr><td>'.&mt('Errors').'</td><td colspan="2"><b>'.&mt(' Unable to find [_1]','<span class="LC_filename">'.$location.'</span>').'</b></td>'."\n";
243: } else {
244: &Apache::lonxml::error("<b> Unable to find <i>$location</i> for scriptlib</b>");
245: return "";
246: }
247: }
248: &Apache::run::run($script,$safeeval);
249: #&Apache::lonxml::debug("ran $bodytext:<br />".&Apache::lonnet::getfile($bodytext)."<br />");
250: }
251: if ($target eq "edit" ) {
252: $result=
253: &Apache::edit::tag_start($target,$token,'New Script Functions').
254: &Apache::edit::editline($token->[1],$bodytext,'scriptlib',40).
255: &Apache::edit::browse(undef,'textnode').
256: $error.'</td></tr>'.
257: &Apache::edit::end_table();
258: }
259: if ($target eq "modified" ) {
260: $result=$token->[4].&Apache::edit::modifiedfield("/scriptlib",$parser);
261: }
262: return $result;
263: }
264:
265: sub end_scriptlib {
266: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
267: my @result;
268: if ($target eq "edit" ) { $result[1]='no'; }
269: return @result;
270: }
271:
272: sub start_parserlib {
273: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
274: my $bodytext;
275: my $result ="";
276: my $error='';
277: if ($target eq 'web' || $target eq 'tex' || $target eq 'grade' ||
278: $target eq 'meta' || $target eq 'edit' || $target eq 'answer' ||
279: $target eq 'analyze' || $target eq 'webgrade') {
280: $bodytext=$$parser[$#$parser]->get_text("/parserlib");
281: $bodytext=&Apache::run::evaluate($bodytext,$safeeval,
282: $$parstack[$#$parstack]);
283: my $location=&Apache::lonnet::filelocation($Apache::lonxml::pwd['-1'],
284: $bodytext);
285: my $styletext=&Apache::lonnet::getfile($location);
286: #&Apache::lonxml::debug("found :$bodytext: in :$location: with :$styletext:");
287: if ($styletext == -1) {
288: if ($target eq 'edit') {
289: $error='</tr><tr><td>Errors</td><td colspan="2"><b> Unable to find <i>'.$location.'</i></b></td>'."\n";
290: } else {
291: &Apache::lonxml::error("<b> Unable to find <i>$location</i> for parserlib</b>");
292: return "";
293: }
294: }
295: %$style = ( %$style , &Apache::style::styleparser($target,$styletext));
296: }
297: if ($target eq "edit" ) {
298: $result=
299: &Apache::edit::tag_start($target,$token,'New Tag Definitions').
300: &Apache::edit::editline($token->[1],$bodytext,'',40).
301: $error.'</td></tr>'.
302: &Apache::edit::end_table();
303: }
304: if ($target eq "modified" ) {
305: $result=$token->[4].&Apache::edit::modifiedfield("/parserlib",$parser);
306: }
307: return $result;
308: }
309:
310: sub end_parserlib {
311: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
312: my @result;
313: if ($target eq "edit" ) { $result[1]='no'; }
314: return @result;
315: }
316:
317: sub start_window {
318: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
319: my $result = '';
320: if ($target eq 'web' || $target eq 'webgrade') {
321: &Apache::lonxml::startredirection;
322: } elsif ($target eq 'tex') {
323: my $printtext=&Apache::lonxml::get_param('printtext',$parstack,$safeeval);
324: if ($printtext=~/\w/) {
325: # If printtext is given, do not output any intervening information
326: &Apache::lonxml::startredirection;
327: } else {
328: $result = '\unskip\footnote{';
329: }
330: } elsif ($target eq 'edit') {
331: $result.=&Apache::edit::tag_start($target,$token);
332: $result.=&Apache::edit::text_arg('Text of Link:','linktext',$token,70);
333: $result.=&Apache::edit::text_arg('Height:','height',$token,5);
334: $result.=&Apache::edit::text_arg('Width:','width',$token,5);
335: $result.=&Apache::edit::text_arg('Printed text (optional):','printtext',$token,20);
336: $result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
337: } elsif ($target eq 'modified') {
338: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
339: $safeeval,'linktext',
340: 'width','height');
341: if ($constructtag) { $result=&Apache::edit::rebuild_tag($token); }
342: }
343: return $result;
344: }
345:
346: sub end_window {
347: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
348: my $result;
349: if ($target eq 'web' || $target eq 'webgrade') {
350: my $output=&Apache::lonxml::endredirection;
351: my $linktext= &Apache::lonxml::get_param('linktext',$parstack,$safeeval);
352: if (!$linktext) { $linktext='<sup>*</sup>'; }
353: my $width= &Apache::lonxml::get_param('width',$parstack,$safeeval);
354: if (!$width) { $width='500'; }
355: my $height= &Apache::lonxml::get_param('height',$parstack,$safeeval);
356: if (!$height) { $height='200'; }
357: $result=&Apache::loncommon::modal_adhoc_window
358: ("LONCAPA_newwindow_$Apache::lonxml::curdepth",$width,$height,$output,$linktext);
359: } elsif ($target eq 'tex') {
360: my $printtext=&Apache::lonxml::get_param('printtext',$parstack,$safeeval);
361: if ($printtext=~/\w/) {
362: # If a "printtext" is given, proceed to retrieve all intervening information and trash it
363: my $output=&Apache::lonxml::endredirection;
364: # Use printtext instead
365: $result=$printtext;
366: } else {
367: $result='}';
368: }
369: } else {
370: $result = '';
371: }
372: return $result;
373: }
374:
375:
376: sub start_windowlink {
377: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
378: my $result = '';
379: if ($target eq 'web' || $target eq 'webgrade') {
380: &Apache::lonxml::startredirection;
381: } elsif ($target eq 'edit') {
382: $result.=&Apache::edit::tag_start($target,$token);
383: $result.=&Apache::edit::text_arg('Link:','href',$token,70);
384: $result.=&Apache::edit::text_arg('Height:','height',$token,5);
385: $result.=&Apache::edit::text_arg('Width:','width',$token,5);
386: $result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
387: } elsif ($target eq 'modified') {
388: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
389: $safeeval,'href',
390: 'width','height');
391: if ($constructtag) { $result=&Apache::edit::rebuild_tag($token); }
392: }
393: return $result;
394: }
395:
396: sub end_windowlink {
397: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
398: my $result;
399: if ($target eq 'web' || $target eq 'webgrade') {
400: my $output=&Apache::lonxml::endredirection;
401: my $href= &Apache::lonxml::get_param('href',$parstack,$safeeval);
402: if (!$href) { $href='/adm/rat/empty.html'; }
403: my $width= &Apache::lonxml::get_param('width',$parstack,$safeeval);
404: if (!$width) { $width='500'; }
405: my $height= &Apache::lonxml::get_param('height',$parstack,$safeeval);
406: if (!$height) { $height='200'; }
407: $result=&Apache::loncommon::modal_link($href,$output,$width,$height);
408: } else {
409: $result = '';
410: }
411: return $result;
412: }
413:
414:
415: sub start_togglebox {
416: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
417: my $result = '';
418: if ($target eq 'web' || $target eq 'webgrade') {
419: my $id="LONCAPA_togglebox_$Apache::lonxml::curdepth";
420: my $heading=&Apache::lonxml::get_param('heading',$parstack,$safeeval);
421: unless ($heading) { $heading=''; } else { $heading.=' '; }
422: my $showtext=&Apache::lonxml::get_param('showtext',$parstack,$safeeval);
423: my $hidetext=&Apache::lonxml::get_param('hidetext',$parstack,$safeeval);
424: my $headerbg=&Apache::lonxml::get_param('headerbg',$parstack,$safeeval);
425: $result=&Apache::loncommon::start_togglebox($id,$heading,$headerbg,$hidetext,$showtext);
426: } elsif ($target eq 'tex') {
427: my $heading=&Apache::lonxml::get_param('heading',$parstack,$safeeval);
428: unless ($heading) { $heading=''; } else { $heading.=' '; }
429: $result = "\n\n".'\fbox{{\bf '.$heading.'} \qquad '."\n";
430: } elsif ($target eq 'edit') {
431: $result.=&Apache::edit::tag_start($target,$token);
432: $result.=&Apache::edit::text_arg('Heading:','heading',$token,70);
433: $result.=&Apache::edit::text_arg('Header Background:','headerbg',$token,7);
434: $result.=&Apache::edit::text_arg('Show text:','showtext',$token,10);
435: $result.=&Apache::edit::text_arg('Hide text:','hidetext',$token,10);
436: $result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
437: } elsif ($target eq 'modified') {
438: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
439: $safeeval,'heading',
440: 'showtext','hidetext',
441: 'headerbg','textbg');
442: if ($constructtag) { $result=&Apache::edit::rebuild_tag($token); }
443: }
444: return $result;
445: }
446:
447: sub end_togglebox {
448: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
449: my $result;
450: if ($target eq 'web' || $target eq 'webgrade') {
451: $result=&Apache::loncommon::end_togglebox();
452: } elsif ($target eq 'tex') {
453: $result = "}\n\n";
454: } else {
455: $result = '';
456: }
457: return $result;
458: }
459:
460:
461:
462: sub start_import {
463: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
464: my $bodytext=$$parser[$#$parser]->get_text("/import");
465: my $result ="";
466:
467: $bodytext=&Apache::run::evaluate($bodytext,$safeeval,$$parstack[$#$parstack]);
468:
469: if ($target eq 'web' || $target eq 'webgrade' || $target eq 'grade'
470: || $target eq 'answer' || $target eq 'tex' || $target eq 'analyze' ) {
471: # FIXME this probably needs to be smart about construction vs.
472: # non construction space.
473: my $location=&Apache::lonnet::filelocation($Apache::lonxml::pwd['-1'],$bodytext);
474: my $file=&Apache::lonnet::getfile($location);
475: if ($file == -1) {
476: &Apache::lonxml::error("<b> Unable to find <i>$bodytext as $location</i> for import</b>");
477: return "";
478: }
479: my $importmode=&Apache::lonxml::get_param('importmode',$parstack,$safeeval);
480: if (($importmode eq 'problem') || ($importmode eq 'part')) {
481: # We are using import to import published problems
482: if (($importmode eq 'problem') || ($file=~/<part[^<]*>/s)) {
483: # We explicitly don't want this to be a separate part or the problem already has parts
484: $file=~s/^\s*<problem>/<library>/s;
485: $file=~s/<\/problem>\s*$/<\/library>/s;
486: } else {
487: # We want this to be a separate part, but it currently is not
488: $file=~s/^\s*<problem>/<library><part>/s;
489: $file=~s/<\/problem>\s*$/<\/part><\/library>/s;
490: }
491: }
492: my $dir=$location;
493: $dir=~s:/[^/]*$::;
494: # &Apache::lonxml::debug("directory $dir $location file $file \n<b>END</b>\n");
495: my $id= &Apache::lonxml::get_id($parstack,$safeeval);
496: if (!$id) { $id=$Apache::lonxml::curdepth; }
497: push(@Apache::inputtags::import,$id);
498: push(@Apache::inputtags::importlist,$id);
499:
500: &Apache::lonxml::newparser($parser,\$file,$dir);
501:
502: } elsif ($target eq "edit" ) {
503: $result.=&Apache::edit::tag_start($target,$token);
504: my $location=$token->[1];
505: $location=~s/^\s*//s;
506: $location=~s/\s*$//s;
507: $result.=&Apache::edit::editline($location,$bodytext,'',40);
508: $result.=&Apache::edit::browse(undef,'textnode');
509: $result.= ' <label>'.&mt('Import as:').
510: '<select name="importmode_'.$Apache::lonxml::curdepth.'">';
511: my %options=&Apache::lonlocal::texthash('' => 'as standard library',
512: 'problem' => 'as problem',
513: 'part' => 'as problem part(s)');
514: foreach my $option (sort(keys(%options))) {
515: $result.='<option value="'.$option.'"';
516: if ($option eq &Apache::lonxml::get_param('importmode',$parstack,$safeeval)) {
517: $result.=' selected="selected"';
518: }
519: $result.='>'.$options{$option}.'</option>';
520: }
521: $result.='</select></label>';
522: #FIXME this need to convert $bodytext to be a contruction space reference
523: #my $location=&Apache::lonnet::filelocation($Apache::lonxml::pwd['-1'],$bodytext);
524: #$result.="Click<a href=\"$location\">here</a> to edit<br />"
525: } elsif ($target eq 'modified') {
526: &Apache::edit::get_new_args($token,$parstack,$safeeval,'importmode');
527: $result='<import id="'.$token->[2]{'id'}.'" importmode="'.$token->[2]{'importmode'}.'">';
528: $result.=&Apache::edit::modifiedfield("/import",$parser);
529: } elsif ($target eq 'meta') {
530: my $id= &Apache::lonxml::get_id($parstack,$safeeval);
531: $result.='<import part="'.$Apache::inputtags::part;
532: if ($id) {
533: $result.='" id="'.$id;
534: }
535: $result.='" importmode="'.$token->[2]{'importmode'}.'">';
536: $result.=$bodytext;
537: $result.='</import>';
538: }
539: return $result;
540: }
541:
542: sub end_import {
543: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
544: pop(@Apache::inputtags::import);
545: my $result;
546: if ($target eq 'edit' ) { $result=&Apache::edit::end_row.
547: &Apache::edit::end_table(); }
548: return $result;
549: }
550:
551: sub start_storetc {
552: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
553: my $result = '';
554: &Apache::lonxml::startredirection;
555: return $result;
556: }
557:
558: sub end_storetc {
559: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
560: my $result;
561: my $output=&Apache::lonxml::endredirection;
562: $output =~ s/\"/\"\;/g;
563: $result = '{\bf '.$output.'.}}\write\tcfile{\protect\tcpc{ '.$output.'.}{\the\value{relpage}}}';
564: return $result;
565: }
566:
567:
568: sub start_physnet {
569: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
570: my $bodytext = '/adm/includes/physnet.sty';
571: my $location=&Apache::lonnet::filelocation($Apache::lonxml::pwd['-1'],$bodytext);
572: my $cbistyletext=&Apache::lonnet::getfile($location);
573:
574: %$style = (%$style,&Apache::style::styleparser($target,$cbistyletext));
575: $$parser['-1']->unget_token($token);
576: # if ( defined($$style{'physnet'}) ) {
577: # &Apache::lonxml::newparser($parser,\$$style{'physnet'});
578: # }
579: return "";
580: }
581:
582: sub end_physnet {
583: return '';
584: }
585:
586: sub start_standalone {
587: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
588: my $result='';
589: if ($target eq 'web' || $target eq 'webgrade') {
590: if ( $env{'request.course.id'} ) {
591: my $inside = &Apache::lonxml::get_all_text("/standalone",$parser,$style);
592: } else {
593: $result='<table bgcolor="#E1E1E1" border="2"><tr><td>';
594: }
595: }
596: return $result;
597: }
598:
599: sub end_standalone {
600: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
601: my $result='';
602: if ($target eq 'web' || $target eq 'webgrade' ) {
603: if ( $env{'request.course.id'} ) {
604: } else {
605: $result='</td></tr></table>';
606: }
607: }
608: return $result;
609: }
610:
611: sub start_comment {
612: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
613: my $result='';
614: if ($target eq 'edit') {
615: $result=&Apache::edit::tag_start($target,$token);
616: my $bodytext=&Apache::lonxml::get_all_text("/comment",$parser,$style);
617: $result.=&Apache::edit::editfield($token->[1],$bodytext,'',80,4)
618: } elsif ( $target eq 'modified') {
619: $result=$token->[4].&Apache::edit::modifiedfield("/comment",$parser);
620: } elsif ( $target eq 'web' || $target eq 'tex' || $target eq 'grade' ||
621: $target eq 'answer' || $target eq 'meta' || $target eq 'analyze' ||
622: $target eq 'webgrade') {
623: #normally throw away comments
624: my $bodytext=&Apache::lonxml::get_all_text("/comment",$parser,$style);
625: }
626: return $result;
627: }
628:
629: sub end_comment {
630: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
631: if ($target eq 'edit' ) { return &Apache::edit::end_table(); }
632: return '';
633: }
634:
635:
636: sub xmlparse {
637: my ($string) = @_;
638: &Apache::lonxml::debug("xmlparse recursion starting with $string");
639: # Apache::run::evaluate does an 'eval' on the name of the subroutine
640: # if it detects something that looks like a subroutine, this ends up calling
641: # things without any arguments and since perl is nice enough to pass
642: # along the default arguments when you don't explicitly say no arguments
643: # if you call &xmlparse, it gets &xmlparse passed as it argument.
644: # Same thing soccurs with &chemparse.
645: if ($string eq '&xmlparse') { return '&xmlparse'; }
646: if ($string eq '&chemparse') { return '&chemparse'; }
647: my ($target,$token,$tagstack,$parstack,$oldparser,$safeeval,$style)=
648: @Apache::scripttag::parser_env;
649: my @parser;
650: &Apache::lonxml::newparser(\@parser,\$string);
651: &Apache::lonxml::startredirection();
652: my $result=&Apache::lonxml::inner_xmlparse($target,$tagstack,
653: $parstack,\@parser,
654: $safeeval,$style);
655: $result.=&Apache::lonxml::endredirection();
656: &Apache::lonxml::debug("target is $target xmlparse recursion ending with $result");
657: return $result;
658: }
659:
660: sub start_num {
661: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
662: my $result = '';
663: my $inside = &Apache::lonxml::get_all_text_unbalanced("/num",$parser);
664: if ($target eq 'tex' || $target eq 'web' || $target eq 'webgrade') {
665: $inside=&Apache::run::evaluate($inside,$safeeval,$$parstack[-1]);
666: if (!$Apache::lonxml::default_homework_loaded) {
667: &Apache::lonxml::default_homework_load($safeeval);
668: }
669: @Apache::scripttag::parser_env = @_;
670: my $format=&Apache::lonxml::get_param('format',$parstack,$safeeval);
671: $result=&Apache::run::run("return &prettyprint(q\0$inside\0,q\0$format\0);",$safeeval);
672: }
673: return $result;
674: }
675:
676: sub end_num {
677: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
678: my $result = '';
679: return $result;
680: }
681:
682: sub start_parse {
683: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
684: my $result = '';
685: if ( $target eq 'web' || $target eq 'tex' ||
686: $target eq 'grade' || $target eq 'answer' ||
687: $target eq 'analyze'|| $target eq 'webgrade') {
688: my $inside = &Apache::lonxml::get_all_text_unbalanced("/parse",$parser);
689: $inside=&Apache::run::evaluate($inside,$safeeval,$$parstack[-1]);
690: if (!$Apache::lonxml::default_homework_loaded) {
691: &Apache::lonxml::default_homework_load($safeeval);
692: }
693: @Apache::scripttag::parser_env = @_;
694: $result=&Apache::run::run("return &xmlparse(q\0$inside\0);",$safeeval);
695: if ($target eq 'grade' || $target eq 'answer' ||
696: $target eq 'analyze') {
697: # grade/answer/analyxe should produce no output but if we
698: # are redirecting, the redirecter should know what to do
699: # with the output
700: if (!$Apache::lonxml::redirection) { $result=''; }
701: }
702: }
703: return $result;
704: }
705:
706: sub end_parse {
707: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
708: my $result = '';
709: return $result;
710: }
711:
712: sub start_algebra {
713: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
714: my $result = '';
715: if ( $target eq 'web' || $target eq 'tex' ||
716: $target eq 'grade' || $target eq 'answer' ||
717: $target eq 'analyze' || $target eq 'webgrade') {
718: my $inside = &Apache::lonxml::get_all_text_unbalanced("/algebra",$parser);
719: $inside = &Apache::run::evaluate($inside,$safeeval,$$parstack[-1]);
720: if ($target eq 'web' || $target eq 'tex' || $target eq 'analyze') {
721: my $style=&Apache::lonxml::get_param('style',$parstack,$safeeval);
722: $result=&Apache::lontexconvert::algebra($inside,$target,$style,$parstack,$safeeval);
723: }
724: $Apache::lonxml::post_evaluate=0;
725: }
726: return $result;
727: }
728:
729: sub end_algebra {
730: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
731: my $result = '';
732: return $result;
733: }
734:
735: 1;
736: __END__
737:
738: =pod
739:
740: =head1 NAME
741:
742: Apache::scripttag.pm
743:
744: =head1 SYNOPSIS
745:
746: implements <script>, <scriptlib>, <parserlib>,
747: and <import>
748:
749: This is part of the LearningOnline Network with CAPA project
750: described at http://www.lon-capa.org.
751:
752: =cut
753:
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