1: # The LearningOnline Network with CAPA
2: # <script> definiton
3: #
4: # $Id: scripttag.pm,v 1.112 2004/04/15 20:24:34 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: # 2/21 Guy
29: # 8/20 Gerd Kortemeyer
30:
31: package Apache::scripttag;
32:
33: use strict;
34: use Apache::lonnet;
35: use Apache::style;
36:
37: #Globals
38: # this used to pass around the standard callsub arguments to a tag func
39: # so xmlparse can reenter the inner_xmlparse loop.
40:
41: @Apache::scripttag::parser_env = ();
42: BEGIN {
43: &Apache::lonxml::register('Apache::scripttag',
44: ('script','scriptlib','parserlib','import',
45: 'window','display','storetc','physnet',
46: 'standalone','comment',
47: 'LONCAPA_INTERNAL_TURN_STYLE_ON',
48: 'LONCAPA_INTERNAL_TURN_STYLE_OFF',
49: 'LONCAPA_INTERNAL_LONHTTPD_PORT'));
50: }
51:
52: sub start_LONCAPA_INTERNAL_TURN_STYLE_ON {
53: $Apache::lonxml::usestyle=1;
54: $Apache::lonxml::style_values='';
55: return ('','no');
56: }
57:
58: sub end_LONCAPA_INTERNAL_TURN_STYLE_ON {
59: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
60: my $end=&Apache::lonxml::get_param('end',$parstack,$safeeval);
61: if (defined($end)) {
62: &Apache::lonxml::end_tag($tagstack,$parstack,$token);
63: }
64: return ('','no');
65: }
66:
67: sub start_LONCAPA_INTERNAL_TURN_STYLE_OFF {
68: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
69: $Apache::lonxml::usestyle=0;
70: my $end=&Apache::lonxml::get_param('end',$parstack,$safeeval);
71: if (!$end) {
72: $Apache::lonxml::style_values=$$parstack[-1];
73: $Apache::lonxml::style_end_values=$$parstack[-1];
74: } else {
75: $Apache::lonxml::style_values=$Apache::lonxml::style_end_values;
76: $Apache::lonxml::style_end_values='';
77: }
78: return ('','no');
79: }
80:
81: sub end_LONCAPA_INTERNAL_TURN_STYLE_OFF {
82: return ('','no');
83: }
84:
85: sub start_LONCAPA_INTERNAL_LONHTTPD_PORT {
86: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
87: if ($target eq 'web') {
88: my $lonhttpdPort=$Apache::lonnet::perlvar{'lonhttpdPort'};
89: if (!defined($lonhttpdPort)) { $lonhttpdPort='8080'; }
90: return '<script type="text/javascript">var lonhttpdport=\''.
91: $lonhttpdPort.'\';</script>';
92: }
93: return ('','no');
94: }
95:
96: sub end_LONCAPA_INTERNAL_LONHTTPD_PORT {
97: return ('','no');
98: }
99:
100: sub start_script {
101: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
102: @Apache::scripttag::parser_env = @_;
103: my $result='';
104: my $type= &Apache::lonxml::get_param('type',$parstack,$safeeval);
105: &Apache::lonxml::debug("found type of $type");
106: if ($type eq "loncapa/perl") {
107: if ( $target eq "modified" ) {
108: $result=$token->[4].&Apache::edit::modifiedfield('/script',$parser);
109: } elsif ( $target eq 'web' || $target eq 'tex' ||
110: $target eq 'grade' || $target eq 'answer' ||
111: $target eq 'analyze' ) {
112: my $bodytext=&Apache::lonxml::get_all_text_unbalanced("/script",$parser);
113: if (!$Apache::lonxml::default_homework_loaded) {
114: &Apache::lonxml::default_homework_load($safeeval);
115: }
116: &Apache::run::run($bodytext,$safeeval);
117: if (($target eq 'answer') &&
118: ($ENV{'form.answer_output_mode'} ne 'tex') &&
119: ($Apache::lonhomework::viewgrades == 'F')) {
120: $Apache::lonxml::evaluate--;
121: my (undef,undef,$udom,$uname)=&Apache::lonxml::whichuser();
122: $result.="<script type=\"text/javascript\"> function LONCAPA_scriptvars_".$uname."_".$udom."_"."$Apache::lonxml::curdepth() {newWindow=open('','new_W','width=500,height=500,scrollbars=1,resizable=yes');newWindow.document.open('text/html','replace');newWindow.document.writeln('<html><head><title>Script Vars</title></head><body bgcolor=\"#FFFFFF\"><pre>";
123: my $listing=&Apache::run::dump($target,$safeeval);
124: $listing=~s/\'/\\\'/g;
125: $listing=~s/\n/\\n/g;
126: $listing=~s/\r/\\r/g;
127: $result.=$listing;
128: $result.= "</pre></body></html>');newWindow.document.close();}</script><a href=\"javascript:LONCAPA_scriptvars_".$uname."_".$udom."_$Apache::lonxml::curdepth();void(0);\">Script Vars</a><br />";
129: }
130: } elsif ($target eq "edit" ) {
131: #&Apache::run::run($bodytext,$safeeval);
132: #$result="<br /> <$token->[1]> output: <br />$bodytext<br />Source:<br />";
133: my $bodytext=&Apache::lonxml::get_all_text_unbalanced("/script",$parser);
134: $result=&Apache::edit::tag_start($target,$token,'Script');
135: $result.=&Apache::edit::editfield($token->[1],$bodytext,'',80,4);
136: } elsif ($target eq 'meta') {
137: my $bodytext=&Apache::lonxml::get_all_text_unbalanced("/script",$parser);
138: }
139: } else {
140: my $bodytext=&Apache::lonxml::get_all_text_unbalanced("/script",$parser);
141: if ($target ne "meta") {
142: $result = $token->[4];
143: $result.=$bodytext;
144: }
145: }
146: return $result;
147: }
148:
149: sub end_script {
150: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
151: if ( $target eq "meta" ) { return ''; }
152: my $type = &Apache::lonxml::get_param('type',$parstack,$safeeval);
153: my $result='';
154: #other script blocks need to survive
155: if ($type ne "loncapa/perl") {
156: return $token->[2];
157: } elsif ($target eq 'edit' ) {
158: return &Apache::edit::end_table();
159: } elsif ($target eq 'answer') {
160: $Apache::lonxml::evaluate++;
161: }
162: return '';
163: }
164:
165: sub start_display {
166: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
167:
168: my $result;
169:
170: if ( $target eq "modified" ) {
171: $result=$token->[4].&Apache::edit::modifiedfield("/display",$parser);
172: } elsif ( $target eq 'web' || $target eq 'tex' ||
173: $target eq 'grade' || $target eq 'answer' ||
174: $target eq 'analyze') {
175: my $bodytext=&Apache::lonxml::get_all_text_unbalanced("/display",$parser);
176: if (!$Apache::lonxml::default_homework_loaded) {
177: &Apache::lonxml::default_homework_load($safeeval);
178: }
179: $result=&Apache::run::run($bodytext,$safeeval);
180: if ($target eq 'grade' || $target eq 'answer' ||
181: $target eq 'analyze') {
182: $result=''; # grade should produce no output
183: }
184: $Apache::lonxml::post_evaluate=0;
185: } elsif ($target eq "edit" ) {
186: my $bodytext=&Apache::lonxml::get_all_text_unbalanced("/display",$parser);
187: #$result =
188: # "<br /> <$token->[1]> output: <br />$bodytext<br />Source:<br />";
189: #$result.=&Apache::edit::editfield($token->[1],$bodytext,'',40,1);
190: $result=&Apache::edit::tag_start($target,$token,'Script With Display');
191: $result.=&Apache::edit::editfield($token->[1],$bodytext,'',80,1)
192: } elsif ($target eq 'meta') {
193: my $bodytext=&Apache::lonxml::get_all_text_unbalanced("/display",$parser);
194: }
195: return $result;
196: }
197:
198: sub end_display {
199: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
200: if ($target eq 'edit' ) { return &Apache::edit::end_table(); }
201: return '';
202: }
203:
204: sub start_scriptlib {
205: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
206: my $bodytext;
207: my $result ='';
208: my $error='';
209:
210: if ($target eq 'web' || $target eq 'tex' || $target eq 'grade' ||
211: $target eq 'meta' || $target eq 'edit' || $target eq 'answer' ||
212: $target eq 'analyze') {
213: $bodytext=$$parser[$#$parser]->get_text("/scriptlib");
214: $bodytext=&Apache::run::evaluate($bodytext,$safeeval,
215: $$parstack[$#$parstack]);
216: my $location=&Apache::lonnet::filelocation($Apache::lonxml::pwd['-1'],
217: $bodytext);
218: my $script=&Apache::lonnet::getfile($location);
219: if ($script == -1) {
220: if ($target eq 'edit') {
221: $error='</tr><tr><td>Errors</td><td colspan="2"><b> Unable to find <i>'.$location.'</i></b></td>'."\n";
222: } else {
223: &Apache::lonxml::error("<b> Unable to find <i>$location</i> for scriptlib</b>");
224: return "";
225: }
226: }
227: &Apache::run::run($script,$safeeval);
228: #&Apache::lonxml::debug("ran $bodytext:<br />".&Apache::lonnet::getfile($bodytext)."<br />");
229: }
230: if ($target eq "edit" ) {
231: $result=
232: &Apache::edit::tag_start($target,$token,'New Script Functions').
233: &Apache::edit::editline($token->[1],$bodytext,'scriptlib',40).
234: &Apache::edit::browse(undef,'textnode').
235: $error.'</td></tr>'.
236: &Apache::edit::end_table();
237: }
238: if ($target eq "modified" ) {
239: $result=$token->[4].&Apache::edit::modifiedfield("/scriptlib",$parser);
240: }
241: return $result;
242: }
243:
244: sub end_scriptlib {
245: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
246: my @result;
247: if ($target eq "edit" ) { $result[1]='no'; }
248: return @result;
249: }
250:
251: sub start_parserlib {
252: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
253: my $bodytext;
254: my $result ="";
255: my $error='';
256: if ($target eq 'web' || $target eq 'tex' || $target eq 'grade' ||
257: $target eq 'meta' || $target eq 'edit' || $target eq 'answer' ||
258: $target eq 'analyze') {
259: $bodytext=$$parser[$#$parser]->get_text("/parserlib");
260: $bodytext=&Apache::run::evaluate($bodytext,$safeeval,
261: $$parstack[$#$parstack]);
262: my $location=&Apache::lonnet::filelocation($Apache::lonxml::pwd['-1'],
263: $bodytext);
264: my $styletext=&Apache::lonnet::getfile($location);
265: #&Apache::lonxml::debug("found :$bodytext: in :$location: with :$styletext:");
266: if ($styletext == -1) {
267: if ($target eq 'edit') {
268: $error='</tr><tr><td>Errors</td><td colspan="2"><b> Unable to find <i>'.$location.'</i></b></td>'."\n";
269: } else {
270: &Apache::lonxml::error("<b> Unable to find <i>$location</i> for parserlib</b>");
271: return "";
272: }
273: }
274: %$style = ( %$style , &Apache::style::styleparser($target,$styletext));
275: }
276: if ($target eq "edit" ) {
277: $result=
278: &Apache::edit::tag_start($target,$token,'New Tag Definitions').
279: &Apache::edit::editline($token->[1],$bodytext,'',40).
280: $error.'</td></tr>'.
281: &Apache::edit::end_table();
282: }
283: if ($target eq "modified" ) {
284: $result=$token->[4].&Apache::edit::modifiedfield("/parserlib",$parser);
285: }
286: return $result;
287: }
288:
289: sub end_parserlib {
290: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
291: my @result;
292: if ($target eq "edit" ) { $result[1]='no'; }
293: return @result;
294: }
295:
296: sub start_window {
297: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
298: my $result = '';
299: if ($target eq 'web') {
300: &Apache::lonxml::startredirection;
301: } elsif ($target eq 'tex') {
302: $result = '\unskip\footnote{';
303: } elsif ($target eq 'edit') {
304: $result.=&Apache::edit::tag_start($target,$token);
305: $result.=&Apache::edit::text_arg('Text of Link:','linktext',$token,70);
306: $result.=&Apache::edit::text_arg('Height:','width',$token,5);
307: $result.=&Apache::edit::text_arg('Width:','height',$token,5);
308: $result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
309: } elsif ($target eq 'modified') {
310: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
311: $safeeval,'linttext',
312: 'width','height');
313: if ($constructtag) { $result=&Apache::edit::rebuild_tag($token); }
314: }
315: return $result;
316: }
317:
318: sub end_window {
319: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
320: my $result;
321: if ($target eq 'web') {
322: my $output=&Apache::lonxml::endredirection;
323: $output =~ s/[\n\r]/ /g;
324: # $output = &HTML::Entities::encode($output,'<>&"\'');
325: $output =~ s/\'/\\\'/g;
326: my $linktext= &Apache::lonxml::get_param('linktext',$parstack,$safeeval);
327: if (!$linktext) { $linktext='<sup>*</sup>'; }
328: my $width= &Apache::lonxml::get_param('width',$parstack,$safeeval);
329: if (!$width) { $width='500'; }
330: my $height= &Apache::lonxml::get_param('height',$parstack,$safeeval);
331: if (!$height) { $height='200'; }
332: $result = "<script type=\"text/javascript\"> function LONCAPA_newwindow_$Apache::lonxml::curdepth() {newWindow=open('','new_W','width=$width,height=$height,scrollbars=1');newWindow.document.open('text/html','replace');newWindow.document.writeln('<html><head><title>newwindow</title></head><body bgcolor=\"#FFFFFF\"> $output </body></html>');newWindow.document.close();}</script><a href=\"javascript:LONCAPA_newwindow_$Apache::lonxml::curdepth();void(0);\">$linktext</a>";
333: } elsif ($target eq 'tex') {
334: $result = '}';
335: } else {
336: $result = '';
337: }
338: return $result;
339: }
340:
341: sub start_import {
342: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
343: my $bodytext=$$parser[$#$parser]->get_text("/import");
344: my $result ="";
345:
346: $bodytext=Apache::run::evaluate($bodytext,$safeeval,$$parstack[$#$parstack]);
347:
348: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
349: $target eq 'tex' || $target eq 'analyze' ) {
350: # FIXME this probably needs to be smart about construction vs.
351: # non construction space.
352: my $location=&Apache::lonnet::filelocation($Apache::lonxml::pwd['-1'],$bodytext);
353: my $file=&Apache::lonnet::getfile($location);
354: if ($file == -1) {
355: &Apache::lonxml::error("<b> Unable to find <i>$bodytext as $location</i> for import</b>");
356: return "";
357: }
358:
359: my $dir=$location;
360: $dir=~s:/[^/]*$::;
361: # &Apache::lonxml::debug("directory $dir $location file $file \n<b>END</b>\n");
362: my $id= &Apache::lonxml::get_param('id',$parstack,$safeeval);
363: if (!$id) { $id=$Apache::lonxml::curdepth; }
364: push(@Apache::inputtags::import,$id);
365: push(@Apache::inputtags::importlist,$id);
366:
367: &Apache::lonxml::newparser($parser,\$file,$dir);
368:
369: } elsif ($target eq "edit" ) {
370: $result.=&Apache::edit::tag_start($target,$token);
371: $result.=&Apache::edit::editline($token->[1],$bodytext,'',40);
372: $result.=&Apache::edit::browse(undef,'textnode');
373: #FIXME this need to convert $bodytext to be a contruction space reference
374: #my $location=&Apache::lonnet::filelocation($Apache::lonxml::pwd['-1'],$bodytext);
375: #$result.="Click<a href=\"$location\">here</a> to edit<br />"
376: } elsif ($target eq 'modified') {
377: $result=$token->[4].&Apache::edit::modifiedfield("/import",$parser);
378: } elsif ($target eq 'meta') {
379: my $id= &Apache::lonxml::get_param('id',$parstack,$safeeval);
380: $result.='<import part="'.$Apache::inputtags::part;
381: if ($id) {
382: $result.='" id="'.$id;
383: }
384: $result.='">';
385: $result.=$bodytext;
386: $result.='</import>';
387: }
388: return $result;
389: }
390:
391: sub end_import {
392: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
393: pop(@Apache::inputtags::import);
394: my $result;
395: if ($target eq 'edit' ) { $result=&Apache::edit::end_table(); }
396: return $result;
397: }
398:
399: sub start_storetc {
400: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
401: my $result = '';
402: &Apache::lonxml::startredirection;
403: return $result;
404: }
405:
406: sub end_storetc {
407: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
408: my $result;
409: my $output=&Apache::lonxml::endredirection;
410: $output =~ s/\"/\"\;/g;
411: $result = '{\bf '.$output.'.}}\write\tcfile{\protect\tcpc{ '.$output.'.}{\the\value{relpage}}}';
412: return $result;
413: }
414:
415:
416: sub start_physnet {
417: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
418: my $bodytext = '/adm/includes/physnet.sty';
419: my $location=&Apache::lonnet::filelocation($Apache::lonxml::pwd['-1'],$bodytext);
420: my $cbistyletext=&Apache::lonnet::getfile($location);
421:
422: %$style = (%$style,&Apache::style::styleparser($target,$cbistyletext));
423: $$parser['-1']->unget_token($token);
424: # if ( defined($$style{'physnet'}) ) {
425: # &Apache::lonxml::newparser($parser,\$$style{'physnet'});
426: # }
427: return "";
428: }
429:
430: sub end_physnet {
431: return '';
432: }
433:
434: sub start_standalone {
435: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
436: my $result='';
437: if ($target eq 'web' ) {
438: if ( $ENV{'request.course.id'} ) {
439: my $inside = &Apache::lonxml::get_all_text("/standalone",$parser);
440: } else {
441: $result='<table bgcolor="#E1E1E1" border="2"><tr><td>';
442: }
443: }
444: return $result;
445: }
446:
447: sub end_standalone {
448: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
449: my $result='';
450: if ($target eq 'web' ) {
451: if ( $ENV{'request.course.id'} ) {
452: } else {
453: $result='</td></tr></table>';
454: }
455: }
456: return $result;
457: }
458:
459: sub start_comment {
460: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
461: my $result='';
462: if ($target eq 'edit') {
463: $result=&Apache::edit::tag_start($target,$token);
464: my $bodytext=&Apache::lonxml::get_all_text("/comment",$parser);
465: $result.=&Apache::edit::editfield($token->[1],$bodytext,'',80,4)
466: } elsif ( $target eq 'modified') {
467: $result=$token->[4].&Apache::edit::modifiedfield("/comment",$parser);
468: } elsif ( $target eq 'web' || $target eq 'tex' || $target eq 'grade' ||
469: $target eq 'answer' || $target eq 'meta' || $target eq 'analyze') {
470: #normally throw away comments
471: my $bodytext=&Apache::lonxml::get_all_text("/comment",$parser);
472: }
473: return $result;
474: }
475:
476: sub end_comment {
477: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
478: if ($target eq 'edit' ) { return &Apache::edit::end_table(); }
479: return '';
480: }
481:
482:
483: sub xmlparse {
484: my ($string) = @_;
485: &Apache::lonxml::debug("xmlparse recursion starting with $string");
486: if ($string eq '&xmlparse') { return '&xmlparse'; }
487: my ($target,$token,$tagstack,$parstack,$oldparser,$safeeval,$style)=
488: @Apache::scripttag::parser_env;
489: my @parser;
490: &Apache::lonxml::newparser(\@parser,\$string);
491: my $result=&Apache::lonxml::inner_xmlparse($target,$tagstack,
492: $parstack,\@parser,
493: $safeeval,$style);
494: &Apache::lonxml::debug("xmlparse recursion ending with $result");
495: return $result;
496: }
497:
498: 1;
499: __END__
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