1: # The LearningOnline Network with CAPA
2: # <script> definiton
3: #
4: # $Id: scripttag.pm,v 1.141 2007/06/11 20:52:40 albertel 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::style;
34:
35: #Globals
36: # this used to pass around the standard callsub arguments to a tag func
37: # so xmlparse can reenter the inner_xmlparse loop.
38:
39: @Apache::scripttag::parser_env = ();
40: BEGIN {
41: &Apache::lonxml::register('Apache::scripttag',
42: ('script','scriptlib','parserlib','import',
43: 'window','display','storetc','physnet',
44: 'standalone','comment','num','parse','algebra',
45: 'LONCAPA_INTERNAL_TURN_STYLE_ON',
46: 'LONCAPA_INTERNAL_TURN_STYLE_OFF',
47: 'LONCAPA_INTERNAL_LONHTTPD_PORT'));
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: $Apache::lonxml::style_end_values='';
75: }
76: return ('','no');
77: }
78:
79: sub end_LONCAPA_INTERNAL_TURN_STYLE_OFF {
80: return ('','no');
81: }
82:
83: sub start_LONCAPA_INTERNAL_LONHTTPD_PORT {
84: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
85: if ($target eq 'web' || $target eq 'webgrade') {
86: my $lonhttpdPort=$Apache::lonnet::perlvar{'lonhttpdPort'};
87: if (!defined($lonhttpdPort)) { $lonhttpdPort='8080'; }
88: return '<script type="text/javascript">var lonhttpdport=\''.
89: $lonhttpdPort.'\';</script>';
90: }
91: return ('','no');
92: }
93:
94: sub end_LONCAPA_INTERNAL_LONHTTPD_PORT {
95: return ('','no');
96: }
97:
98: sub start_script {
99: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
100: @Apache::scripttag::parser_env = @_;
101: my $result='';
102: my $type= &Apache::lonxml::get_param('type',$parstack,$safeeval);
103: &Apache::lonxml::debug("found type of $type");
104: if ($type eq "loncapa/perl") {
105: if ( $target eq "modified" ) {
106: $result=$token->[4].&Apache::edit::modifiedfield('/script',$parser);
107: } elsif ( $target eq 'web' || $target eq 'tex' ||
108: $target eq 'grade' || $target eq 'webgrade' ||
109: $target eq 'answer' || $target eq 'analyze' ) {
110: my $bodytext=&Apache::lonxml::get_all_text_unbalanced("/script",$parser);
111: if (!$Apache::lonxml::default_homework_loaded) {
112: &Apache::lonxml::default_homework_load($safeeval);
113: }
114: &Apache::run::run($bodytext,$safeeval);
115: if (($target eq 'answer') &&
116: ($env{'form.answer_output_mode'} ne 'tex') &&
117: ($Apache::lonhomework::viewgrades == 'F')) {
118: $Apache::lonxml::evaluate--;
119: my (undef,undef,$udom,$uname)=&Apache::lonnet::whichuser();
120: my $windowopen=&Apache::lonhtmlcommon::javascript_docopen();
121: my $start_page =
122: &Apache::loncommon::start_page('Script Vars', undef,
123: {'only_body' => 1,
124: 'bgcolor' => '#FFFFFF',
125: 'js_ready' => 1,});
126: my $end_page =
127: &Apache::loncommon::end_page({'js_ready' => 1,});
128:
129: $uname =~s/\W//g;
130: $udom =~s/\W//g;
131: my $script_var ="<script type=\"text/javascript\">
132: // <![CDATA[
133: function LONCAPA_scriptvars_".$uname."_".$udom."_"."$Apache::lonxml::curdepth() {newWindow=open('','new_W','width=500,height=500,scrollbars=1,resizable=yes');newWindow.$windowopen;newWindow.document.writeln('$start_page<pre>";
134: my $listing=&Apache::run::dump($target,$safeeval);
135: $listing=~s/\\/\\\\/g;
136: $listing=~s/\'/\\\'/g;
137: $script_var.=$listing;
138: $script_var.= "<\\/pre>$end_page');newWindow.document.close();newWindow.focus()}
139: // ]]>
140: </script><a href=\"javascript:LONCAPA_scriptvars_".$uname."_".$udom."_$Apache::lonxml::curdepth();void(0);\">Script Vars</a><br />";
141: &Apache::lonxml::add_script_result($script_var);
142: }
143: } elsif ($target eq "edit" ) {
144: #&Apache::run::run($bodytext,$safeeval);
145: #$result="<br /> <$token->[1]> output: <br />$bodytext<br />Source:<br />";
146: my $bodytext=&Apache::lonxml::get_all_text_unbalanced("/script",$parser);
147: $result=&Apache::edit::tag_start($target,$token,'Script');
148: $result.=&Apache::edit::editfield($token->[1],$bodytext,'',80,4);
149: } elsif ($target eq 'meta') {
150: my $bodytext=&Apache::lonxml::get_all_text_unbalanced("/script",$parser);
151: }
152: } else {
153: my $bodytext=&Apache::lonxml::get_all_text_unbalanced("/script",$parser);
154: if ($target ne "meta" && $target ne 'tex') {
155: $result = $token->[4];
156: $result.=$bodytext;
157: }
158: }
159: return $result;
160: }
161:
162: sub end_script {
163: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
164: if ( $target eq "meta" ) { return ''; }
165: my $type = &Apache::lonxml::get_param('type',$parstack,$safeeval);
166: my $result='';
167: #other script blocks need to survive
168: if ($type ne "loncapa/perl" && $target ne 'tex') {
169: return $token->[2];
170: } elsif ($target eq 'edit' ) {
171: return &Apache::edit::end_table();
172: } elsif ($target eq 'answer') {
173: $Apache::lonxml::evaluate++;
174: }
175: return '';
176: }
177:
178: sub start_display {
179: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
180: @Apache::scripttag::parser_env = @_;
181: my $result;
182:
183: if ( $target eq "modified" ) {
184: $result=$token->[4].&Apache::edit::modifiedfield("/display",$parser);
185: } elsif ( $target eq 'web' || $target eq 'tex' ||
186: $target eq 'grade' || $target eq 'webgrade' ||
187: $target eq 'answer' || $target eq 'analyze') {
188: my $bodytext=&Apache::lonxml::get_all_text_unbalanced("/display",$parser);
189: if (!$Apache::lonxml::default_homework_loaded) {
190: &Apache::lonxml::default_homework_load($safeeval);
191: }
192: $result=&Apache::run::run($bodytext,$safeeval);
193: if ($target eq 'grade' || $target eq 'answer' ||
194: $target eq 'analyze') {
195: # grade/answer/analyxe should produce no output but if we
196: # are redirecting, the redirecter should know what to do
197: # with the output
198: if (!$Apache::lonxml::redirection) { $result=''; }
199: }
200: $Apache::lonxml::post_evaluate=0;
201: } elsif ($target eq "edit" ) {
202: my $bodytext=&Apache::lonxml::get_all_text_unbalanced("/display",$parser);
203: #$result =
204: # "<br /> <$token->[1]> output: <br />$bodytext<br />Source:<br />";
205: #$result.=&Apache::edit::editfield($token->[1],$bodytext,'',40,1);
206: $result=&Apache::edit::tag_start($target,$token,'Script With Display');
207: $result.=&Apache::edit::editfield($token->[1],$bodytext,'',80,1)
208: } elsif ($target eq 'meta') {
209: my $bodytext=&Apache::lonxml::get_all_text_unbalanced("/display",$parser);
210: }
211: return $result;
212: }
213:
214: sub end_display {
215: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
216: if ($target eq 'edit' ) { return &Apache::edit::end_table(); }
217: return '';
218: }
219:
220: sub start_scriptlib {
221: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
222: my $bodytext;
223: my $result ='';
224: my $error='';
225:
226: if ($target eq 'web' || $target eq 'tex' || $target eq 'grade' ||
227: $target eq 'meta' || $target eq 'edit' || $target eq 'answer' ||
228: $target eq 'analyze' || $target eq 'webgrade') {
229: $bodytext=$$parser[$#$parser]->get_text("/scriptlib");
230: $bodytext=&Apache::run::evaluate($bodytext,$safeeval,
231: $$parstack[$#$parstack]);
232: my $location=&Apache::lonnet::filelocation($Apache::lonxml::pwd['-1'],
233: $bodytext);
234: my $script=&Apache::lonnet::getfile($location);
235: if ($script == -1) {
236: if ($target eq 'edit') {
237: $error='</tr><tr><td>Errors</td><td colspan="2"><b> Unable to find <i>'.$location.'</i></b></td>'."\n";
238: } else {
239: &Apache::lonxml::error("<b> Unable to find <i>$location</i> for scriptlib</b>");
240: return "";
241: }
242: }
243: &Apache::run::run($script,$safeeval);
244: #&Apache::lonxml::debug("ran $bodytext:<br />".&Apache::lonnet::getfile($bodytext)."<br />");
245: }
246: if ($target eq "edit" ) {
247: $result=
248: &Apache::edit::tag_start($target,$token,'New Script Functions').
249: &Apache::edit::editline($token->[1],$bodytext,'scriptlib',40).
250: &Apache::edit::browse(undef,'textnode').
251: $error.'</td></tr>'.
252: &Apache::edit::end_table();
253: }
254: if ($target eq "modified" ) {
255: $result=$token->[4].&Apache::edit::modifiedfield("/scriptlib",$parser);
256: }
257: return $result;
258: }
259:
260: sub end_scriptlib {
261: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
262: my @result;
263: if ($target eq "edit" ) { $result[1]='no'; }
264: return @result;
265: }
266:
267: sub start_parserlib {
268: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
269: my $bodytext;
270: my $result ="";
271: my $error='';
272: if ($target eq 'web' || $target eq 'tex' || $target eq 'grade' ||
273: $target eq 'meta' || $target eq 'edit' || $target eq 'answer' ||
274: $target eq 'analyze' || $target eq 'webgrade') {
275: $bodytext=$$parser[$#$parser]->get_text("/parserlib");
276: $bodytext=&Apache::run::evaluate($bodytext,$safeeval,
277: $$parstack[$#$parstack]);
278: my $location=&Apache::lonnet::filelocation($Apache::lonxml::pwd['-1'],
279: $bodytext);
280: my $styletext=&Apache::lonnet::getfile($location);
281: #&Apache::lonxml::debug("found :$bodytext: in :$location: with :$styletext:");
282: if ($styletext == -1) {
283: if ($target eq 'edit') {
284: $error='</tr><tr><td>Errors</td><td colspan="2"><b> Unable to find <i>'.$location.'</i></b></td>'."\n";
285: } else {
286: &Apache::lonxml::error("<b> Unable to find <i>$location</i> for parserlib</b>");
287: return "";
288: }
289: }
290: %$style = ( %$style , &Apache::style::styleparser($target,$styletext));
291: }
292: if ($target eq "edit" ) {
293: $result=
294: &Apache::edit::tag_start($target,$token,'New Tag Definitions').
295: &Apache::edit::editline($token->[1],$bodytext,'',40).
296: $error.'</td></tr>'.
297: &Apache::edit::end_table();
298: }
299: if ($target eq "modified" ) {
300: $result=$token->[4].&Apache::edit::modifiedfield("/parserlib",$parser);
301: }
302: return $result;
303: }
304:
305: sub end_parserlib {
306: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
307: my @result;
308: if ($target eq "edit" ) { $result[1]='no'; }
309: return @result;
310: }
311:
312: sub start_window {
313: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
314: my $result = '';
315: if ($target eq 'web' || $target eq 'webgrade') {
316: &Apache::lonxml::startredirection;
317: } elsif ($target eq 'tex') {
318: $result = '\unskip\footnote{';
319: } elsif ($target eq 'edit') {
320: $result.=&Apache::edit::tag_start($target,$token);
321: $result.=&Apache::edit::text_arg('Text of Link:','linktext',$token,70);
322: $result.=&Apache::edit::text_arg('Height:','height',$token,5);
323: $result.=&Apache::edit::text_arg('Width:','width',$token,5);
324: $result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
325: } elsif ($target eq 'modified') {
326: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
327: $safeeval,'linktext',
328: 'width','height');
329: if ($constructtag) { $result=&Apache::edit::rebuild_tag($token); }
330: }
331: return $result;
332: }
333:
334: sub end_window {
335: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
336: my $result;
337: if ($target eq 'web' || $target eq 'webgrade') {
338: my $output=&Apache::lonxml::endredirection;
339: $output =~ s/[\n\r]/ /g;
340: # $output = &HTML::Entities::encode($output,'<>&"\'');
341: $output =~ s/\'/\\\'/g;
342: my $linktext= &Apache::lonxml::get_param('linktext',$parstack,$safeeval);
343: if (!$linktext) { $linktext='<sup>*</sup>'; }
344: my $width= &Apache::lonxml::get_param('width',$parstack,$safeeval);
345: if (!$width) { $width='500'; }
346: my $height= &Apache::lonxml::get_param('height',$parstack,$safeeval);
347: if (!$height) { $height='200'; }
348:
349: my $start_page =
350: &Apache::loncommon::start_page($linktext, undef,
351: {'only_body' => 1,
352: 'bgcolor' => '#FFFFFF',
353: 'js_ready' => 1,});
354: my $end_page =
355: &Apache::loncommon::end_page({'js_ready' => 1,});
356: $result = "<script type=\"text/javascript\">
357: //<!--
358: function LONCAPA_newwindow_$Apache::lonxml::curdepth() {
359: newWindow=open(".&Apache::lonhtmlcommon::javascript_nothing().",'new_W','width=$width,height=$height,scrollbars=1');
360: newWindow.".&Apache::lonhtmlcommon::javascript_docopen().";
361: newWindow.document.writeln('$start_page $output $end_page');
362: newWindow.document.close();}
363: //-->
364: </script><a href=\"javascript:LONCAPA_newwindow_$Apache::lonxml::curdepth();void(0);\">$linktext</a>";
365: } elsif ($target eq 'tex') {
366: $result = '}';
367: } else {
368: $result = '';
369: }
370: return $result;
371: }
372:
373: sub start_import {
374: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
375: my $bodytext=$$parser[$#$parser]->get_text("/import");
376: my $result ="";
377:
378: $bodytext=Apache::run::evaluate($bodytext,$safeeval,$$parstack[$#$parstack]);
379:
380: if ($target eq 'web' || $target eq 'webgrade' || $target eq 'grade'
381: || $target eq 'answer' || $target eq 'tex' || $target eq 'analyze' ) {
382: # FIXME this probably needs to be smart about construction vs.
383: # non construction space.
384: my $location=&Apache::lonnet::filelocation($Apache::lonxml::pwd['-1'],$bodytext);
385: my $file=&Apache::lonnet::getfile($location);
386: if ($file == -1) {
387: &Apache::lonxml::error("<b> Unable to find <i>$bodytext as $location</i> for import</b>");
388: return "";
389: }
390:
391: my $dir=$location;
392: $dir=~s:/[^/]*$::;
393: # &Apache::lonxml::debug("directory $dir $location file $file \n<b>END</b>\n");
394: my $id= &Apache::lonxml::get_param('id',$parstack,$safeeval);
395: if (!$id) { $id=$Apache::lonxml::curdepth; }
396: push(@Apache::inputtags::import,$id);
397: push(@Apache::inputtags::importlist,$id);
398:
399: &Apache::lonxml::newparser($parser,\$file,$dir);
400:
401: } elsif ($target eq "edit" ) {
402: $result.=&Apache::edit::tag_start($target,$token);
403: $result.=&Apache::edit::editline($token->[1],$bodytext,'',40);
404: $result.=&Apache::edit::browse(undef,'textnode');
405: #FIXME this need to convert $bodytext to be a contruction space reference
406: #my $location=&Apache::lonnet::filelocation($Apache::lonxml::pwd['-1'],$bodytext);
407: #$result.="Click<a href=\"$location\">here</a> to edit<br />"
408: } elsif ($target eq 'modified') {
409: $result=$token->[4].&Apache::edit::modifiedfield("/import",$parser);
410: } elsif ($target eq 'meta') {
411: my $id= &Apache::lonxml::get_param('id',$parstack,$safeeval);
412: $result.='<import part="'.$Apache::inputtags::part;
413: if ($id) {
414: $result.='" id="'.$id;
415: }
416: $result.='">';
417: $result.=$bodytext;
418: $result.='</import>';
419: }
420: return $result;
421: }
422:
423: sub end_import {
424: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
425: pop(@Apache::inputtags::import);
426: my $result;
427: if ($target eq 'edit' ) { $result=&Apache::edit::end_row.
428: &Apache::edit::end_table(); }
429: return $result;
430: }
431:
432: sub start_storetc {
433: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
434: my $result = '';
435: &Apache::lonxml::startredirection;
436: return $result;
437: }
438:
439: sub end_storetc {
440: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
441: my $result;
442: my $output=&Apache::lonxml::endredirection;
443: $output =~ s/\"/\"\;/g;
444: $result = '{\bf '.$output.'.}}\write\tcfile{\protect\tcpc{ '.$output.'.}{\the\value{relpage}}}';
445: return $result;
446: }
447:
448:
449: sub start_physnet {
450: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
451: my $bodytext = '/adm/includes/physnet.sty';
452: my $location=&Apache::lonnet::filelocation($Apache::lonxml::pwd['-1'],$bodytext);
453: my $cbistyletext=&Apache::lonnet::getfile($location);
454:
455: %$style = (%$style,&Apache::style::styleparser($target,$cbistyletext));
456: $$parser['-1']->unget_token($token);
457: # if ( defined($$style{'physnet'}) ) {
458: # &Apache::lonxml::newparser($parser,\$$style{'physnet'});
459: # }
460: return "";
461: }
462:
463: sub end_physnet {
464: return '';
465: }
466:
467: sub start_standalone {
468: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
469: my $result='';
470: if ($target eq 'web' || $target eq 'webgrade') {
471: if ( $env{'request.course.id'} ) {
472: my $inside = &Apache::lonxml::get_all_text("/standalone",$parser,$style);
473: } else {
474: $result='<table bgcolor="#E1E1E1" border="2"><tr><td>';
475: }
476: }
477: return $result;
478: }
479:
480: sub end_standalone {
481: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
482: my $result='';
483: if ($target eq 'web' || $target eq 'webgrade' ) {
484: if ( $env{'request.course.id'} ) {
485: } else {
486: $result='</td></tr></table>';
487: }
488: }
489: return $result;
490: }
491:
492: sub start_comment {
493: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
494: my $result='';
495: if ($target eq 'edit') {
496: $result=&Apache::edit::tag_start($target,$token);
497: my $bodytext=&Apache::lonxml::get_all_text("/comment",$parser,$style);
498: $result.=&Apache::edit::editfield($token->[1],$bodytext,'',80,4)
499: } elsif ( $target eq 'modified') {
500: $result=$token->[4].&Apache::edit::modifiedfield("/comment",$parser);
501: } elsif ( $target eq 'web' || $target eq 'tex' || $target eq 'grade' ||
502: $target eq 'answer' || $target eq 'meta' || $target eq 'analyze' ||
503: $target eq 'webgrade') {
504: #normally throw away comments
505: my $bodytext=&Apache::lonxml::get_all_text("/comment",$parser,$style);
506: }
507: return $result;
508: }
509:
510: sub end_comment {
511: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
512: if ($target eq 'edit' ) { return &Apache::edit::end_table(); }
513: return '';
514: }
515:
516:
517: sub xmlparse {
518: my ($string) = @_;
519: &Apache::lonxml::debug("xmlparse recursion starting with $string");
520: # Apache::run::evaluate does an 'eval' on the name of the subroutine
521: # if it detects something that looks like a subroutine, this ends up calling
522: # things without any arguments and since perl is nice enough to pass
523: # along the default arguments when you don't explicitly say no arguments
524: # if you call &xmlparse, it gets &xmlparse passed as it argument.
525: # Same thing soccurs with &chemparse.
526: if ($string eq '&xmlparse') { return '&xmlparse'; }
527: if ($string eq '&chemparse') { return '&chemparse'; }
528: my ($target,$token,$tagstack,$parstack,$oldparser,$safeeval,$style)=
529: @Apache::scripttag::parser_env;
530: my @parser;
531: &Apache::lonxml::newparser(\@parser,\$string);
532: &Apache::lonxml::startredirection();
533: my $result=&Apache::lonxml::inner_xmlparse($target,$tagstack,
534: $parstack,\@parser,
535: $safeeval,$style);
536: $result.=&Apache::lonxml::endredirection();
537: &Apache::lonxml::debug("target is $target xmlparse recursion ending with $result");
538: return $result;
539: }
540:
541: sub start_num {
542: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
543: my $result = '';
544: my $inside = &Apache::lonxml::get_all_text_unbalanced("/num",$parser);
545: if ($target eq 'tex' || $target eq 'web' || $target eq 'webgrade') {
546: $inside=&Apache::run::evaluate($inside,$safeeval,$$parstack[-1]);
547: if (!$Apache::lonxml::default_homework_loaded) {
548: &Apache::lonxml::default_homework_load($safeeval);
549: }
550: @Apache::scripttag::parser_env = @_;
551: my $format=&Apache::lonxml::get_param('format',$parstack,$safeeval);
552: $result=&Apache::run::run("return &prettyprint(q\0$inside\0,q\0$format\0);",$safeeval);
553: }
554: return $result;
555: }
556:
557: sub end_num {
558: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
559: my $result = '';
560: return $result;
561: }
562:
563: sub start_parse {
564: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
565: my $result = '';
566: if ( $target eq 'web' || $target eq 'tex' ||
567: $target eq 'grade' || $target eq 'answer' ||
568: $target eq 'analyze'|| $target eq 'webgrade') {
569: my $inside = &Apache::lonxml::get_all_text_unbalanced("/parse",$parser);
570: $inside=&Apache::run::evaluate($inside,$safeeval,$$parstack[-1]);
571: if (!$Apache::lonxml::default_homework_loaded) {
572: &Apache::lonxml::default_homework_load($safeeval);
573: }
574: @Apache::scripttag::parser_env = @_;
575: $result=&Apache::run::run("return &xmlparse(q\0$inside\0);",$safeeval);
576: if ($target eq 'grade' || $target eq 'answer' ||
577: $target eq 'analyze') {
578: # grade/answer/analyxe should produce no output but if we
579: # are redirecting, the redirecter should know what to do
580: # with the output
581: if (!$Apache::lonxml::redirection) { $result=''; }
582: }
583: }
584: return $result;
585: }
586:
587: sub end_parse {
588: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
589: my $result = '';
590: return $result;
591: }
592:
593: sub start_algebra {
594: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
595: my $result = '';
596: if ( $target eq 'web' || $target eq 'tex' ||
597: $target eq 'grade' || $target eq 'answer' ||
598: $target eq 'analyze' || $target eq 'webgrade') {
599: my $inside = &Apache::lonxml::get_all_text_unbalanced("/algebra",$parser);
600: $inside = &Apache::run::evaluate($inside,$safeeval,$$parstack[-1]);
601: if ($target eq 'web' || $target eq 'tex' || $target eq 'analyze') {
602: my $style=&Apache::lonxml::get_param('style',$parstack,$safeeval);
603: $result=&Apache::lontexconvert::algebra($inside,$target,$style);
604: }
605: $Apache::lonxml::post_evaluate=0;
606: }
607: return $result;
608: }
609:
610: sub end_algebra {
611: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
612: my $result = '';
613: return $result;
614: }
615:
616: 1;
617: __END__
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