1: # The LearningOnline Network with CAPA
2: # <script> definiton
3: #
4: # $Id: scripttag.pm,v 1.159 2011/12/10 18:11:05 www 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','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($function_name,500,500,
112: '<pre>'.&Apache::run::dump($target,$safeeval).'</pre>',
113: &mt('Script Vars'))."<br />");
114: }
115: } elsif ($target eq "edit" ) {
116: #&Apache::run::run($bodytext,$safeeval);
117: #$result="<br /> <$token->[1]> output: <br />$bodytext<br />Source:<br />";
118: my $bodytext=&Apache::lonxml::get_all_text_unbalanced("/script",$parser);
119: $result=&Apache::edit::tag_start($target,$token,'Script');
120: $result.=&Apache::edit::editfield($token->[1],$bodytext,'',80,4);
121: } elsif ($target eq 'meta') {
122: my $bodytext=&Apache::lonxml::get_all_text_unbalanced("/script",$parser);
123: }
124: } else {
125: my $bodytext=&Apache::lonxml::get_all_text_unbalanced("/script",$parser);
126: if ($target ne "meta" && $target ne 'tex' && $target ne 'answer') {
127: $result = $token->[4];
128: $result.=$bodytext;
129: }
130: }
131: return $result;
132: }
133:
134: sub end_script {
135: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
136: if ( $target eq "meta" ) { return ''; }
137: my $type = &Apache::lonxml::get_param('type',$parstack,$safeeval);
138: my $result='';
139: #other script blocks need to survive
140: if ($type ne "loncapa/perl" && $target ne 'tex') {
141: return $token->[2];
142: } elsif ($target eq 'edit' ) {
143: return &Apache::edit::end_table();
144: } elsif ($target eq 'answer') {
145: $Apache::lonxml::evaluate++;
146: }
147: return '';
148: }
149:
150: sub start_display {
151: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
152: @Apache::scripttag::parser_env = @_;
153: my $result;
154:
155: if ( $target eq "modified" ) {
156: $result=$token->[4].&Apache::edit::modifiedfield("/display",$parser);
157: } elsif ( $target eq 'web' || $target eq 'tex' ||
158: $target eq 'grade' || $target eq 'webgrade' ||
159: $target eq 'answer' || $target eq 'analyze') {
160: my $bodytext=&Apache::lonxml::get_all_text_unbalanced("/display",$parser);
161: if (!$Apache::lonxml::default_homework_loaded) {
162: &Apache::lonxml::default_homework_load($safeeval);
163: }
164: $result=&Apache::run::run($bodytext,$safeeval);
165: if ($target eq 'grade' || $target eq 'answer' ||
166: $target eq 'analyze') {
167: # grade/answer/analyxe should produce no output but if we
168: # are redirecting, the redirecter should know what to do
169: # with the output
170: if (!$Apache::lonxml::redirection) { $result=''; }
171: }
172: $Apache::lonxml::post_evaluate=0;
173: } elsif ($target eq "edit" ) {
174: my $bodytext=&Apache::lonxml::get_all_text_unbalanced("/display",$parser);
175: #$result =
176: # "<br /> <$token->[1]> output: <br />$bodytext<br />Source:<br />";
177: #$result.=&Apache::edit::editfield($token->[1],$bodytext,'',40,1);
178: $result=&Apache::edit::tag_start($target,$token,'Script With Display');
179: $result.=&Apache::edit::editfield($token->[1],$bodytext,'',80,1)
180: } elsif ($target eq 'meta') {
181: my $bodytext=&Apache::lonxml::get_all_text_unbalanced("/display",$parser);
182: }
183: return $result;
184: }
185:
186: sub end_display {
187: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
188: if ($target eq 'edit' ) { return &Apache::edit::end_table(); }
189: return '';
190: }
191:
192: sub start_scriptlib {
193: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
194: my $bodytext;
195: my $result ='';
196: my $error='';
197:
198: if ($target eq 'web' || $target eq 'tex' || $target eq 'grade' ||
199: $target eq 'meta' || $target eq 'edit' || $target eq 'answer' ||
200: $target eq 'analyze' || $target eq 'webgrade') {
201: $bodytext=$$parser[$#$parser]->get_text("/scriptlib");
202: $bodytext=&Apache::run::evaluate($bodytext,$safeeval,
203: $$parstack[$#$parstack]);
204: my $location=&Apache::lonnet::filelocation($Apache::lonxml::pwd['-1'],
205: $bodytext);
206: my $script=&Apache::lonnet::getfile($location);
207: if ($script == -1) {
208: if ($target eq 'edit') {
209: $error='</tr><tr><td>'.&mt('Errors').'</td><td colspan="2"><b>'.&mt(' Unable to find [_1]','<span class="LC_filename">'.$location.'</span>').'</b></td>'."\n";
210: } else {
211: &Apache::lonxml::error("<b> Unable to find <i>$location</i> for scriptlib</b>");
212: return "";
213: }
214: }
215: &Apache::run::run($script,$safeeval);
216: #&Apache::lonxml::debug("ran $bodytext:<br />".&Apache::lonnet::getfile($bodytext)."<br />");
217: }
218: if ($target eq "edit" ) {
219: $result=
220: &Apache::edit::tag_start($target,$token,'New Script Functions').
221: &Apache::edit::editline($token->[1],$bodytext,'scriptlib',40).
222: &Apache::edit::browse(undef,'textnode').
223: $error.'</td></tr>'.
224: &Apache::edit::end_table();
225: }
226: if ($target eq "modified" ) {
227: $result=$token->[4].&Apache::edit::modifiedfield("/scriptlib",$parser);
228: }
229: return $result;
230: }
231:
232: sub end_scriptlib {
233: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
234: my @result;
235: if ($target eq "edit" ) { $result[1]='no'; }
236: return @result;
237: }
238:
239: sub start_parserlib {
240: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
241: my $bodytext;
242: my $result ="";
243: my $error='';
244: if ($target eq 'web' || $target eq 'tex' || $target eq 'grade' ||
245: $target eq 'meta' || $target eq 'edit' || $target eq 'answer' ||
246: $target eq 'analyze' || $target eq 'webgrade') {
247: $bodytext=$$parser[$#$parser]->get_text("/parserlib");
248: $bodytext=&Apache::run::evaluate($bodytext,$safeeval,
249: $$parstack[$#$parstack]);
250: my $location=&Apache::lonnet::filelocation($Apache::lonxml::pwd['-1'],
251: $bodytext);
252: my $styletext=&Apache::lonnet::getfile($location);
253: #&Apache::lonxml::debug("found :$bodytext: in :$location: with :$styletext:");
254: if ($styletext == -1) {
255: if ($target eq 'edit') {
256: $error='</tr><tr><td>Errors</td><td colspan="2"><b> Unable to find <i>'.$location.'</i></b></td>'."\n";
257: } else {
258: &Apache::lonxml::error("<b> Unable to find <i>$location</i> for parserlib</b>");
259: return "";
260: }
261: }
262: %$style = ( %$style , &Apache::style::styleparser($target,$styletext));
263: }
264: if ($target eq "edit" ) {
265: $result=
266: &Apache::edit::tag_start($target,$token,'New Tag Definitions').
267: &Apache::edit::editline($token->[1],$bodytext,'',40).
268: $error.'</td></tr>'.
269: &Apache::edit::end_table();
270: }
271: if ($target eq "modified" ) {
272: $result=$token->[4].&Apache::edit::modifiedfield("/parserlib",$parser);
273: }
274: return $result;
275: }
276:
277: sub end_parserlib {
278: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
279: my @result;
280: if ($target eq "edit" ) { $result[1]='no'; }
281: return @result;
282: }
283:
284: sub start_window {
285: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
286: my $result = '';
287: if ($target eq 'web' || $target eq 'webgrade') {
288: &Apache::lonxml::startredirection;
289: } elsif ($target eq 'tex') {
290: $result = '\unskip\footnote{';
291: } elsif ($target eq 'edit') {
292: $result.=&Apache::edit::tag_start($target,$token);
293: $result.=&Apache::edit::text_arg('Text of Link:','linktext',$token,70);
294: $result.=&Apache::edit::text_arg('Height:','height',$token,5);
295: $result.=&Apache::edit::text_arg('Width:','width',$token,5);
296: $result.=&Apache::edit::text_arg('Mime Type:','mimetype',$token,5);
297: $result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
298: } elsif ($target eq 'modified') {
299: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
300: $safeeval,'linktext',
301: 'width','height',
302: 'mimetype');
303: if ($constructtag) { $result=&Apache::edit::rebuild_tag($token); }
304: }
305: return $result;
306: }
307:
308: sub end_window {
309: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
310: my $result;
311: if ($target eq 'web' || $target eq 'webgrade') {
312: my $output=&Apache::lonxml::endredirection;
313: $output =~ s/[\n\r]/ /g;
314: # $output = &HTML::Entities::encode($output,'<>&"\'');
315: $output =~ s/\'/\\\'/g;
316: my $linktext= &Apache::lonxml::get_param('linktext',$parstack,$safeeval);
317: if (!$linktext) { $linktext='<sup>*</sup>'; }
318: my $width= &Apache::lonxml::get_param('width',$parstack,$safeeval);
319: if (!$width) { $width='500'; }
320: my $height= &Apache::lonxml::get_param('height',$parstack,$safeeval);
321: if (!$height) { $height='200'; }
322: my $mimetype= &Apache::lonxml::get_param('mimetype',$parstack,$safeeval)
323: || 'text/html';
324:
325: my ($start_page,$end_page);
326: if ($mimetype eq 'text/html') {
327: $start_page =
328: &Apache::loncommon::start_page($linktext, undef,
329: {'only_body' => 1,
330: 'bgcolor' => '#FFFFFF',
331: 'js_ready' => 1,});
332: $end_page =
333: &Apache::loncommon::end_page({'js_ready' => 1,});
334: }
335: $result = "<script type=\"text/javascript\">
336: //<!--
337: function LONCAPA_newwindow_$Apache::lonxml::curdepth() {
338: newWindow=open(".&Apache::lonhtmlcommon::javascript_nothing().",'new_W');
339: newWindow.close();
340: newWindow=open(".&Apache::lonhtmlcommon::javascript_nothing().",'new_W','width=$width,height=$height,scrollbars=1');
341: newWindow.".&Apache::lonhtmlcommon::javascript_docopen($mimetype).";
342: newWindow.document.writeln('$start_page $output $end_page');
343: newWindow.document.close();}
344: //-->
345: </script><a href=\"javascript:LONCAPA_newwindow_$Apache::lonxml::curdepth();void(0);\">$linktext</a>";
346: } elsif ($target eq 'tex') {
347: $result = '}';
348: } else {
349: $result = '';
350: }
351: return $result;
352: }
353:
354: sub start_import {
355: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
356: my $bodytext=$$parser[$#$parser]->get_text("/import");
357: my $result ="";
358:
359: $bodytext=&Apache::run::evaluate($bodytext,$safeeval,$$parstack[$#$parstack]);
360:
361: if ($target eq 'web' || $target eq 'webgrade' || $target eq 'grade'
362: || $target eq 'answer' || $target eq 'tex' || $target eq 'analyze' ) {
363: # FIXME this probably needs to be smart about construction vs.
364: # non construction space.
365: my $location=&Apache::lonnet::filelocation($Apache::lonxml::pwd['-1'],$bodytext);
366: my $file=&Apache::lonnet::getfile($location);
367: if ($file == -1) {
368: &Apache::lonxml::error("<b> Unable to find <i>$bodytext as $location</i> for import</b>");
369: return "";
370: }
371: my $importmode=&Apache::lonxml::get_param('importmode',$parstack,$safeeval);
372: if (($importmode eq 'problem') || ($importmode eq 'part')) {
373: # We are using import to import published problems
374: if (($importmode eq 'problem') || ($file=~/<part[^<]*>/s)) {
375: # We explicitly don't want this to be a separate part or the problem already has parts
376: $file=~s/^\s*<problem>/<library>/s;
377: $file=~s/<\/problem>\s*$/<\/library>/s;
378: } else {
379: # We want this to be a separate part, but it currently is not
380: $file=~s/^\s*<problem>/<library><part>/s;
381: $file=~s/<\/problem>\s*$/<\/part><\/library>/s;
382: }
383: }
384: my $dir=$location;
385: $dir=~s:/[^/]*$::;
386: # &Apache::lonxml::debug("directory $dir $location file $file \n<b>END</b>\n");
387: my $id= &Apache::lonxml::get_id($parstack,$safeeval);
388: if (!$id) { $id=$Apache::lonxml::curdepth; }
389: push(@Apache::inputtags::import,$id);
390: push(@Apache::inputtags::importlist,$id);
391:
392: &Apache::lonxml::newparser($parser,\$file,$dir);
393:
394: } elsif ($target eq "edit" ) {
395: $result.=&Apache::edit::tag_start($target,$token);
396: my $location=$token->[1];
397: $location=~s/^\s*//s;
398: $location=~s/\s*$//s;
399: $result.=&Apache::edit::editline($location,$bodytext,'',40);
400: $result.=&Apache::edit::browse(undef,'textnode');
401: $result.= ' <label>'.&mt('Import as:').
402: '<select name="importmode_'.$Apache::lonxml::curdepth.'">';
403: my %options=&Apache::lonlocal::texthash('' => 'as standard library',
404: 'problem' => 'as problem',
405: 'part' => 'as problem part(s)');
406: foreach my $option (sort(keys(%options))) {
407: $result.='<option value="'.$option.'"';
408: if ($option eq &Apache::lonxml::get_param('importmode',$parstack,$safeeval)) {
409: $result.=' selected="selected"';
410: }
411: $result.='>'.$options{$option}.'</option>';
412: }
413: $result.='</select></label>';
414: #FIXME this need to convert $bodytext to be a contruction space reference
415: #my $location=&Apache::lonnet::filelocation($Apache::lonxml::pwd['-1'],$bodytext);
416: #$result.="Click<a href=\"$location\">here</a> to edit<br />"
417: } elsif ($target eq 'modified') {
418: &Apache::edit::get_new_args($token,$parstack,$safeeval,'importmode');
419: $result='<import id="'.$token->[2]{'id'}.'" importmode="'.$token->[2]{'importmode'}.'">';
420: $result.=&Apache::edit::modifiedfield("/import",$parser);
421: } elsif ($target eq 'meta') {
422: my $id= &Apache::lonxml::get_id($parstack,$safeeval);
423: $result.='<import part="'.$Apache::inputtags::part;
424: if ($id) {
425: $result.='" id="'.$id;
426: }
427: $result.='" importmode="'.$token->[2]{'importmode'}.'">';
428: $result.=$bodytext;
429: $result.='</import>';
430: }
431: return $result;
432: }
433:
434: sub end_import {
435: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
436: pop(@Apache::inputtags::import);
437: my $result;
438: if ($target eq 'edit' ) { $result=&Apache::edit::end_row.
439: &Apache::edit::end_table(); }
440: return $result;
441: }
442:
443: sub start_storetc {
444: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
445: my $result = '';
446: &Apache::lonxml::startredirection;
447: return $result;
448: }
449:
450: sub end_storetc {
451: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
452: my $result;
453: my $output=&Apache::lonxml::endredirection;
454: $output =~ s/\"/\"\;/g;
455: $result = '{\bf '.$output.'.}}\write\tcfile{\protect\tcpc{ '.$output.'.}{\the\value{relpage}}}';
456: return $result;
457: }
458:
459:
460: sub start_physnet {
461: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
462: my $bodytext = '/adm/includes/physnet.sty';
463: my $location=&Apache::lonnet::filelocation($Apache::lonxml::pwd['-1'],$bodytext);
464: my $cbistyletext=&Apache::lonnet::getfile($location);
465:
466: %$style = (%$style,&Apache::style::styleparser($target,$cbistyletext));
467: $$parser['-1']->unget_token($token);
468: # if ( defined($$style{'physnet'}) ) {
469: # &Apache::lonxml::newparser($parser,\$$style{'physnet'});
470: # }
471: return "";
472: }
473:
474: sub end_physnet {
475: return '';
476: }
477:
478: sub start_standalone {
479: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
480: my $result='';
481: if ($target eq 'web' || $target eq 'webgrade') {
482: if ( $env{'request.course.id'} ) {
483: my $inside = &Apache::lonxml::get_all_text("/standalone",$parser,$style);
484: } else {
485: $result='<table bgcolor="#E1E1E1" border="2"><tr><td>';
486: }
487: }
488: return $result;
489: }
490:
491: sub end_standalone {
492: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
493: my $result='';
494: if ($target eq 'web' || $target eq 'webgrade' ) {
495: if ( $env{'request.course.id'} ) {
496: } else {
497: $result='</td></tr></table>';
498: }
499: }
500: return $result;
501: }
502:
503: sub start_comment {
504: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
505: my $result='';
506: if ($target eq 'edit') {
507: $result=&Apache::edit::tag_start($target,$token);
508: my $bodytext=&Apache::lonxml::get_all_text("/comment",$parser,$style);
509: $result.=&Apache::edit::editfield($token->[1],$bodytext,'',80,4)
510: } elsif ( $target eq 'modified') {
511: $result=$token->[4].&Apache::edit::modifiedfield("/comment",$parser);
512: } elsif ( $target eq 'web' || $target eq 'tex' || $target eq 'grade' ||
513: $target eq 'answer' || $target eq 'meta' || $target eq 'analyze' ||
514: $target eq 'webgrade') {
515: #normally throw away comments
516: my $bodytext=&Apache::lonxml::get_all_text("/comment",$parser,$style);
517: }
518: return $result;
519: }
520:
521: sub end_comment {
522: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
523: if ($target eq 'edit' ) { return &Apache::edit::end_table(); }
524: return '';
525: }
526:
527:
528: sub xmlparse {
529: my ($string) = @_;
530: &Apache::lonxml::debug("xmlparse recursion starting with $string");
531: # Apache::run::evaluate does an 'eval' on the name of the subroutine
532: # if it detects something that looks like a subroutine, this ends up calling
533: # things without any arguments and since perl is nice enough to pass
534: # along the default arguments when you don't explicitly say no arguments
535: # if you call &xmlparse, it gets &xmlparse passed as it argument.
536: # Same thing soccurs with &chemparse.
537: if ($string eq '&xmlparse') { return '&xmlparse'; }
538: if ($string eq '&chemparse') { return '&chemparse'; }
539: my ($target,$token,$tagstack,$parstack,$oldparser,$safeeval,$style)=
540: @Apache::scripttag::parser_env;
541: my @parser;
542: &Apache::lonxml::newparser(\@parser,\$string);
543: &Apache::lonxml::startredirection();
544: my $result=&Apache::lonxml::inner_xmlparse($target,$tagstack,
545: $parstack,\@parser,
546: $safeeval,$style);
547: $result.=&Apache::lonxml::endredirection();
548: &Apache::lonxml::debug("target is $target xmlparse recursion ending with $result");
549: return $result;
550: }
551:
552: sub start_num {
553: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
554: my $result = '';
555: my $inside = &Apache::lonxml::get_all_text_unbalanced("/num",$parser);
556: if ($target eq 'tex' || $target eq 'web' || $target eq 'webgrade') {
557: $inside=&Apache::run::evaluate($inside,$safeeval,$$parstack[-1]);
558: if (!$Apache::lonxml::default_homework_loaded) {
559: &Apache::lonxml::default_homework_load($safeeval);
560: }
561: @Apache::scripttag::parser_env = @_;
562: my $format=&Apache::lonxml::get_param('format',$parstack,$safeeval);
563: $result=&Apache::run::run("return &prettyprint(q\0$inside\0,q\0$format\0);",$safeeval);
564: }
565: return $result;
566: }
567:
568: sub end_num {
569: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
570: my $result = '';
571: return $result;
572: }
573:
574: sub start_parse {
575: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
576: my $result = '';
577: if ( $target eq 'web' || $target eq 'tex' ||
578: $target eq 'grade' || $target eq 'answer' ||
579: $target eq 'analyze'|| $target eq 'webgrade') {
580: my $inside = &Apache::lonxml::get_all_text_unbalanced("/parse",$parser);
581: $inside=&Apache::run::evaluate($inside,$safeeval,$$parstack[-1]);
582: if (!$Apache::lonxml::default_homework_loaded) {
583: &Apache::lonxml::default_homework_load($safeeval);
584: }
585: @Apache::scripttag::parser_env = @_;
586: $result=&Apache::run::run("return &xmlparse(q\0$inside\0);",$safeeval);
587: if ($target eq 'grade' || $target eq 'answer' ||
588: $target eq 'analyze') {
589: # grade/answer/analyxe should produce no output but if we
590: # are redirecting, the redirecter should know what to do
591: # with the output
592: if (!$Apache::lonxml::redirection) { $result=''; }
593: }
594: }
595: return $result;
596: }
597:
598: sub end_parse {
599: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
600: my $result = '';
601: return $result;
602: }
603:
604: sub start_algebra {
605: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
606: my $result = '';
607: if ( $target eq 'web' || $target eq 'tex' ||
608: $target eq 'grade' || $target eq 'answer' ||
609: $target eq 'analyze' || $target eq 'webgrade') {
610: my $inside = &Apache::lonxml::get_all_text_unbalanced("/algebra",$parser);
611: $inside = &Apache::run::evaluate($inside,$safeeval,$$parstack[-1]);
612: if ($target eq 'web' || $target eq 'tex' || $target eq 'analyze') {
613: my $style=&Apache::lonxml::get_param('style',$parstack,$safeeval);
614: $result=&Apache::lontexconvert::algebra($inside,$target,$style,$parstack,$safeeval);
615: }
616: $Apache::lonxml::post_evaluate=0;
617: }
618: return $result;
619: }
620:
621: sub end_algebra {
622: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
623: my $result = '';
624: return $result;
625: }
626:
627: 1;
628: __END__
629:
630: =pod
631:
632: =head1 NAME
633:
634: Apache::scripttag.pm
635:
636: =head1 SYNOPSIS
637:
638: implements <script>, <scriptlib>, <parserlib>,
639: and <import>
640:
641: This is part of the LearningOnline Network with CAPA project
642: described at http://www.lon-capa.org.
643:
644: =cut
645:
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