1: # The LearningOnline Network with CAPA
2: # XML Parser Module
3: #
4: # $Id: lonxml.pm,v 1.531.2.6 2013/03/18 00:04:27 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: # Copyright for TtHfunc and TtMfunc by Ian Hutchinson.
29: # TtHfunc and TtMfunc (the "Code") may be compiled and linked into
30: # binary executable programs or libraries distributed by the
31: # Michigan State University (the "Licensee"), but any binaries so
32: # distributed are hereby licensed only for use in the context
33: # of a program or computational system for which the Licensee is the
34: # primary author or distributor, and which performs substantial
35: # additional tasks beyond the translation of (La)TeX into HTML.
36: # The C source of the Code may not be distributed by the Licensee
37: # to any other parties under any circumstances.
38: #
39:
40: =pod
41:
42: =head1 NAME
43:
44: Apache::lonxml
45:
46: =head1 SYNOPSIS
47:
48: XML Parsing Module
49:
50: This is part of the LearningOnline Network with CAPA project
51: described at http://www.lon-capa.org.
52:
53:
54: =head1 SUBROUTINES
55:
56: =cut
57:
58:
59:
60: package Apache::lonxml;
61: use vars
62: qw(@pwd @outputstack $redirection $import @extlinks $metamode $evaluate %insertlist @namespace $errorcount $warningcount);
63: use strict;
64: use LONCAPA;
65: use HTML::LCParser();
66: use HTML::TreeBuilder();
67: use HTML::Entities();
68: use Safe();
69: use Safe::Hole();
70: use Math::Cephes();
71: use Math::Random();
72: use Opcode();
73: use POSIX qw(strftime);
74: use Time::HiRes qw( gettimeofday tv_interval );
75: use Symbol();
76:
77: sub register {
78: my ($space,@taglist) = @_;
79: foreach my $temptag (@taglist) {
80: push(@{ $Apache::lonxml::alltags{$temptag} },$space);
81: }
82: }
83:
84: sub deregister {
85: my ($space,@taglist) = @_;
86: foreach my $temptag (@taglist) {
87: my $tempspace = $Apache::lonxml::alltags{$temptag}[-1];
88: if ($tempspace eq $space) {
89: pop(@{ $Apache::lonxml::alltags{$temptag} });
90: }
91: }
92: #&printalltags();
93: }
94:
95: use Apache::Constants qw(:common);
96: use Apache::lontexconvert();
97: use Apache::style();
98: use Apache::run();
99: use Apache::londefdef();
100: use Apache::scripttag();
101: use Apache::languagetags();
102: use Apache::edit();
103: use Apache::inputtags();
104: use Apache::outputtags();
105: use Apache::lonnet;
106: use Apache::File();
107: use Apache::loncommon();
108: use Apache::lonfeedback();
109: use Apache::lonmsg();
110: use Apache::loncacc();
111: use Apache::lonmaxima();
112: use Apache::lonr();
113: use Apache::lonlocal;
114: use Apache::lonhtmlcommon();
115: use Apache::functionplotresponse();
116: use Apache::lonnavmaps();
117:
118: #==================================== Main subroutine: xmlparse
119:
120: #debugging control, to turn on debugging modify the correct handler
121:
122: $Apache::lonxml::debug=0;
123:
124: # keeps count of the number of warnings and errors generated in a parse
125: $warningcount=0;
126: $errorcount=0;
127:
128: #path to the directory containing the file currently being processed
129: @pwd=();
130:
131: #these two are used for capturing a subset of the output for later processing,
132: #don't touch them directly use &startredirection and &endredirection
133: @outputstack = ();
134: $redirection = 0;
135:
136: #controls wheter the <import> tag actually does
137: $import = 1;
138: @extlinks=();
139:
140: # meta mode is a bit weird only some output is to be turned off
141: #<output> tag turns metamode off (defined in londefdef.pm)
142: $metamode = 0;
143:
144: # turns on and of run::evaluate actually derefencing var refs
145: $evaluate = 1;
146:
147: # data structure for eidt mode, determines what tags can go into what other tags
148: %insertlist=();
149:
150: # stores the list of active tag namespaces
151: @namespace=();
152:
153: # stores all Scrit Vars displays for later showing
154: my @script_var_displays=();
155:
156: # a pointer the the Apache request object
157: $Apache::lonxml::request='';
158:
159: # a problem number counter, and check on ether it is used
160: $Apache::lonxml::counter=1;
161: $Apache::lonxml::counter_changed=0;
162:
163: # Part counter hash. In analysis mode, the
164: # problems can use this to record which parts increment the counter
165: # by how much. The counter subs will maintain this hash via
166: # their optional part parameters. Note that the assumption is that
167: # analysis is done in one request and therefore it is not necessary to
168: # save this information request-to-request.
169:
170:
171: %Apache::lonxml::counters_per_part = ();
172:
173: #internal check on whether to look at style defs
174: $Apache::lonxml::usestyle=1;
175:
176: #locations used to store the parameter string for style substitutions
177: $Apache::lonxml::style_values='';
178: $Apache::lonxml::style_end_values='';
179:
180: #array of ssi calls that need to occur after we are done parsing
181: @Apache::lonxml::ssi_info=();
182:
183: #should we do the postag variable interpolation
184: $Apache::lonxml::post_evaluate=1;
185:
186: #a header message to emit in the case of any generated warning or errors
187: $Apache::lonxml::warnings_error_header='';
188:
189: # Control whether or not LaTeX symbols should be substituted for their
190: # \ style equivalents...this may be turned off e.g. in an verbatim
191: # environment.
192:
193: $Apache::lonxml::substitute_LaTeX_symbols = 1; # Starts out on.
194:
195: sub enable_LaTeX_substitutions {
196: $Apache::lonxml::substitute_LaTeX_symbols = 1;
197: }
198: sub disable_LaTeX_substitutions {
199: $Apache::lonxml::substitute_LaTeX_symbols = 0;
200: }
201:
202: sub xmlend {
203: my ($target,$parser)=@_;
204: my $mode='xml';
205: my $status='OPEN';
206: if ($Apache::lonhomework::parsing_a_problem ||
207: $Apache::lonhomework::parsing_a_task ) {
208: $mode='problem';
209: $status=$Apache::inputtags::status[-1];
210: }
211: my $discussion;
212: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
213: ['LONCAPA_INTERNAL_no_discussion']);
214: if (
215: ( (!exists($env{'form.LONCAPA_INTERNAL_no_discussion'}))
216: || ($env{'form.LONCAPA_INTERNAL_no_discussion'} ne 'true')
217: )
218: && ($env{'form.inhibitmenu'} ne 'yes')
219: ) {
220: $discussion=&Apache::lonfeedback::list_discussion($mode,$status);
221: }
222: if ($target eq 'tex') {
223: $discussion.='<tex>\keephidden{ENDOFPROBLEM}\vskip 0.5mm\noindent\makebox[\textwidth/$number_of_columns][b]{\hrulefill}\end{document}</tex>';
224: &Apache::lonxml::newparser($parser,\$discussion,'');
225: return '';
226: }
227:
228: return $discussion;
229: }
230:
231: sub tokeninputfield {
232: my $defhost=$Apache::lonnet::perlvar{'lonHostID'};
233: $defhost=~tr/a-z/A-Z/;
234: return (<<ENDINPUTFIELD)
235: <script type="text/javascript">
236: function updatetoken() {
237: var comp=new Array;
238: var barcode=unescape(document.tokeninput.barcode.value);
239: comp=barcode.split('*');
240: if (typeof(comp[0])!="undefined") {
241: document.tokeninput.codeone.value=comp[0];
242: }
243: if (typeof(comp[1])!="undefined") {
244: document.tokeninput.codetwo.value=comp[1];
245: }
246: if (typeof(comp[2])!="undefined") {
247: comp[2]=comp[2].toUpperCase();
248: document.tokeninput.codethree.value=comp[2];
249: }
250: document.tokeninput.barcode.value='';
251: }
252: </script>
253: <form method="post" name="tokeninput" action="">
254: <table border="2" bgcolor="#FFFFBB">
255: <tr><th>DocID Checkin</th></tr>
256: <tr><td>
257: <table>
258: <tr>
259: <td>Scan in Barcode</td>
260: <td><input type="text" size="22" name="barcode"
261: onchange="updatetoken()"/></td>
262: </tr>
263: <tr><td><i>or</i> Type in DocID</td>
264: <td>
265: <input type="text" size="5" name="codeone" />
266: <b><font size="+2">*</font></b>
267: <input type="text" size="5" name="codetwo" />
268: <b><font size="+2">*</font></b>
269: <input type="text" size="10" name="codethree" value="$defhost"
270: onchange="this.value=this.value.toUpperCase()" />
271: </td></tr>
272: </table>
273: </td></tr>
274: <tr><td><input type="submit" value="Check in DocID" /></td></tr>
275: </table>
276: </form>
277: ENDINPUTFIELD
278: }
279:
280: sub maketoken {
281: my ($symb,$tuname,$tudom,$tcrsid)=@_;
282: unless ($symb) {
283: $symb=&Apache::lonnet::symbread();
284: }
285: unless ($tuname) {
286: $tuname=$env{'user.name'};
287: $tudom=$env{'user.domain'};
288: $tcrsid=$env{'request.course.id'};
289: }
290: return &Apache::lonnet::checkout($symb,$tuname,$tudom,$tcrsid);
291: }
292:
293: sub printtokenheader {
294: my ($target,$token,$tsymb,$tcrsid,$tudom,$tuname)=@_;
295: unless ($token) { return ''; }
296:
297: my ($symb,$courseid,$domain,$name) = &Apache::lonnet::whichuser();
298: unless ($tsymb) {
299: $tsymb=$symb;
300: }
301: unless ($tuname) {
302: $tuname=$name;
303: $tudom=$domain;
304: $tcrsid=$courseid;
305: }
306:
307: my $plainname=&Apache::loncommon::plainname($tuname,$tudom);
308:
309: if ($target eq 'web') {
310: my %idhash=&Apache::lonnet::idrget($tudom,($tuname));
311: return
312: '<img align="right" src="/cgi-bin/barcode.png?encode='.$token.'" />'.
313: &mt('Checked out for').' '.$plainname.
314: '<br />'.&mt('User').': '.$tuname.' at '.$tudom.
315: '<br />'.&mt('ID').': '.$idhash{$tuname}.
316: '<br />'.&mt('CourseID').': '.$tcrsid.
317: '<br />'.&mt('Course').': '.$env{'course.'.$tcrsid.'.description'}.
318: '<br />'.&mt('DocID').': '.$token.
319: '<br />'.&mt('Time').': '.&Apache::lonlocal::locallocaltime().'<hr />';
320: } else {
321: return $token;
322: }
323: }
324:
325: sub printalltags {
326: my $temp;
327: foreach $temp (sort keys %Apache::lonxml::alltags) {
328: &Apache::lonxml::debug("$temp -- ".
329: join(',',@{ $Apache::lonxml::alltags{$temp} }));
330: }
331: }
332:
333: sub xmlparse {
334: my ($request,$target,$content_file_string,$safeinit,%style_for_target) = @_;
335:
336: &setup_globals($request,$target);
337: &Apache::inputtags::initialize_inputtags();
338: &Apache::bridgetask::initialize_bridgetask();
339: &Apache::outputtags::initialize_outputtags();
340: &Apache::edit::initialize_edit();
341: &Apache::londefdef::initialize_londefdef();
342:
343: #
344: # do we have a course style file?
345: #
346:
347: if ($env{'request.course.id'} && $env{'request.state'} ne 'construct') {
348: my $bodytext=
349: $env{'course.'.$env{'request.course.id'}.'.default_xml_style'};
350: if ($bodytext) {
351: foreach my $file (split(',',$bodytext)) {
352: my $location=&Apache::lonnet::filelocation('',$file);
353: my $styletext=&Apache::lonnet::getfile($location);
354: if ($styletext ne '-1') {
355: %style_for_target = (%style_for_target,
356: &Apache::style::styleparser($target,$styletext));
357: }
358: }
359: }
360: } elsif ($env{'construct.style'}
361: && ($env{'request.state'} eq 'construct')) {
362: my $location=&Apache::lonnet::filelocation('',$env{'construct.style'});
363: my $styletext=&Apache::lonnet::getfile($location);
364: if ($styletext ne '-1') {
365: %style_for_target = (%style_for_target,
366: &Apache::style::styleparser($target,$styletext));
367: }
368: }
369: #&printalltags();
370: my @pars = ();
371: my $pwd=$env{'request.filename'};
372: $pwd =~ s:/[^/]*$::;
373: &newparser(\@pars,\$content_file_string,$pwd);
374:
375: my $safeeval = new Safe;
376: my $safehole = new Safe::Hole;
377: &init_safespace($target,$safeeval,$safehole,$safeinit);
378: #-------------------- Redefinition of the target in the case of compound target
379:
380: ($target, my @tenta) = split('&&',$target);
381:
382: my @stack = ();
383: my @parstack = ();
384: &initdepth();
385: &init_alarm();
386: my $finaloutput = &inner_xmlparse($target,\@stack,\@parstack,\@pars,
387: $safeeval,\%style_for_target,1);
388:
389: if (@stack) {
390: &warning(&mt('At end of file some tags were still left unclosed:').
391: ' <tt><'.join('></tt>, <tt><',reverse(@stack)).
392: '></tt>');
393: }
394: if ($env{'request.uri'}) {
395: &writeallows($env{'request.uri'});
396: }
397: &do_registered_ssi();
398: if ($Apache::lonxml::counter_changed) { &store_counter() }
399:
400: &clean_safespace($safeeval);
401:
402: if (@script_var_displays) {
403: my $scriptoutput = join('',@script_var_displays);
404: $finaloutput=~s{(</body>\s*</html>)\s*$}{$scriptoutput$1}s;
405: undef(@script_var_displays);
406: }
407: &init_state();
408: if ($env{'form.return_only_error_and_warning_counts'}) {
409: if ($env{'request.filename'}=~/\.(html|htm|xml)$/i) {
410: my $error=&verify_html($content_file_string);
411: if ($error) { $errorcount++; }
412: }
413: return "$errorcount:$warningcount";
414: }
415: return $finaloutput;
416: }
417:
418: sub latex_special_symbols {
419: my ($string,$where)=@_;
420: #
421: # If e.g. in verbatim mode, then don't substitute.
422: # but return original string.
423: #
424: if (!($Apache::lonxml::substitute_LaTeX_symbols)) {
425: return $string;
426: }
427: if ($where eq 'header') {
428: $string =~ s/\\/\$\\backslash\$/g; # \ -> $\backslash$ per LaTex line by line pg 10.
429: $string =~ s/(\$|%|\{|\})/\\$1/g;
430: $string=&Apache::lonprintout::character_chart($string);
431: # any & or # leftover should be safe to just escape
432: $string=~s/([^\\])\&/$1\\\&/g;
433: $string=~s/([^\\])\#/$1\\\#/g;
434: $string =~ s/_/\\_/g; # _ -> \_
435: $string =~ s/\^/\\\^{}/g; # ^ -> \^{}
436: } else {
437: $string=~s/\\/\\ensuremath{\\backslash}/g;
438: $string=~s/\\\%|\%/\\\%/g;
439: $string=~s/\\{|{/\\{/g;
440: $string=~s/\\}|}/\\}/g;
441: $string=~s/\\ensuremath\\{\\backslash\\}/\\ensuremath{\\backslash}/g;
442: $string=~s/\\\$|\$/\\\$/g;
443: $string=~s/\\\_|\_/\\\_/g;
444: $string=~s/([^\\]|^)(\~|\^)/$1\\$2\\strut /g;
445: $string=~s/(>|<)/\\ensuremath\{$1\}/g; #more or less
446: $string=&Apache::lonprintout::character_chart($string);
447: # any & or # leftover should be safe to just escape
448: $string=~s/\\\&|\&/\\\&/g;
449: $string=~s/\\\#|\#/\\\#/g;
450: $string=~s/\|/\$\\mid\$/g;
451: #single { or } How to escape?
452: }
453: return $string;
454: }
455:
456: sub inner_xmlparse {
457: my ($target,$stack,$parstack,$pars,$safeeval,$style_for_target,$start)=@_;
458: my $finaloutput = '';
459: my $result;
460: my $token;
461: my $dontpop=0;
462: my $startredirection = $Apache::lonxml::redirection;
463: while ( $#$pars > -1 ) {
464: while ($token = $$pars['-1']->get_token) {
465: if (($token->[0] eq 'T') || ($token->[0] eq 'C') ) {
466: if ($metamode<1) {
467: my $text=$token->[1];
468: if ($token->[0] eq 'C' && $target eq 'tex') {
469: $text = '';
470: # $text = '%'.$text."\n";
471: }
472: $result.=$text;
473: }
474: } elsif (($token->[0] eq 'D')) {
475: if ($metamode<1 && $target eq 'web') {
476: my $text=$token->[1];
477: $result.=$text;
478: }
479: } elsif ($token->[0] eq 'PI') {
480: if ($metamode<1 && $target eq 'web') {
481: $result=$token->[2];
482: }
483: } elsif ($token->[0] eq 'S') {
484: # add tag to stack
485: push (@$stack,$token->[1]);
486: # add parameters list to another stack
487: push (@$parstack,&parstring($token));
488: &increasedepth($token);
489: if ($Apache::lonxml::usestyle &&
490: exists($$style_for_target{$token->[1]})) {
491: $Apache::lonxml::usestyle=0;
492: my $string=$$style_for_target{$token->[1]}.
493: '<LONCAPA_INTERNAL_TURN_STYLE_ON />';
494: &Apache::lonxml::newparser($pars,\$string);
495: $Apache::lonxml::style_values=$$parstack[-1];
496: $Apache::lonxml::style_end_values=$$parstack[-1];
497: } else {
498: $result = &callsub("start_$token->[1]", $target, $token, $stack,
499: $parstack, $pars, $safeeval, $style_for_target);
500: }
501: } elsif ($token->[0] eq 'E') {
502: if ($Apache::lonxml::usestyle &&
503: exists($$style_for_target{'/'."$token->[1]"})) {
504: $Apache::lonxml::usestyle=0;
505: my $string=$$style_for_target{'/'.$token->[1]}.
506: '<LONCAPA_INTERNAL_TURN_STYLE_ON end="'.$token->[1].'" />';
507: &Apache::lonxml::newparser($pars,\$string);
508: $Apache::lonxml::style_values=$Apache::lonxml::style_end_values;
509: $Apache::lonxml::style_end_values='';
510: $dontpop=1;
511: } else {
512: #clear out any tags that didn't end
513: while ($token->[1] ne $$stack['-1'] && ($#$stack > -1)) {
514: my $lasttag=$$stack[-1];
515: if ($token->[1] =~ /^\Q$lasttag\E$/i) {
516: &Apache::lonxml::warning(&mt('Using tag [_1] on line [_2] as end tag to [_3]','</'.$token->[1].'>','.$token->[3].','<'.$$stack[-1].'>'));
517: last;
518: } else {
519: &Apache::lonxml::warning(&mt('Found tag [_1] on line [_2] when looking for [_3] in file.','</'.$token->[1].'>',$token->[3],'</'.$$stack[-1].'>'));
520: &end_tag($stack,$parstack,$token);
521: }
522: }
523: $result = &callsub("end_$token->[1]", $target, $token, $stack,
524: $parstack, $pars,$safeeval, $style_for_target);
525: }
526: } else {
527: &Apache::lonxml::error("Unknown token event :$token->[0]:$token->[1]:");
528: }
529: #evaluate variable refs in result
530: if ($Apache::lonxml::post_evaluate &&$result ne "") {
531: my $extras;
532: if (!$Apache::lonxml::usestyle) {
533: $extras=$Apache::lonxml::style_values;
534: }
535: if ( $#$parstack > -1 ) {
536: $result=&Apache::run::evaluate($result,$safeeval,$extras.$$parstack[-1]);
537: } else {
538: $result= &Apache::run::evaluate($result,$safeeval,$extras);
539: }
540: }
541: $Apache::lonxml::post_evaluate=1;
542:
543: if (($token->[0] eq 'T') || ($token->[0] eq 'C') || ($token->[0] eq 'D') ) {
544: #Style file definitions should be correct
545: if ($target eq 'tex' && ($Apache::lonxml::usestyle)) {
546: $result=&latex_special_symbols($result);
547: }
548: }
549:
550: if ($Apache::lonxml::redirection) {
551: $Apache::lonxml::outputstack['-1'] .= $result;
552: } else {
553: $finaloutput.=$result;
554: }
555: $result = '';
556:
557: if ($token->[0] eq 'E' && !$dontpop) {
558: &end_tag($stack,$parstack,$token);
559: }
560: $dontpop=0;
561: }
562: if ($#$pars > -1) {
563: pop @$pars;
564: pop @Apache::lonxml::pwd;
565: }
566: }
567:
568: # if ($target eq 'meta') {
569: # $finaloutput.=&endredirection;
570: # }
571:
572: if ( $start && $target eq 'grade') { &endredirection(); }
573: if ( $Apache::lonxml::redirection > $startredirection) {
574: while ($Apache::lonxml::redirection > $startredirection) {
575: $finaloutput .= &endredirection();
576: }
577: }
578: if (($ENV{'QUERY_STRING'}) && ($target eq 'web')) {
579: $finaloutput=&afterburn($finaloutput);
580: }
581: if ($target eq 'modified') {
582: # if modfied, handle startpart and endpart
583: $finaloutput=~s/\<startpartmarker[^\>]*\>(.*)\<endpartmarker[^\>]*\>/<part>$1<\/part>/gs;
584: }
585: return $finaloutput;
586: }
587:
588: ##
589: ## Looks to see if there is a subroutine defined for this tag. If so, call it,
590: ## otherwise do not call it as we do not know what it is.
591: ##
592: sub callsub {
593: my ($sub,$target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
594: my $currentstring='';
595: my $nodefault;
596: {
597: my $sub1;
598: no strict 'refs';
599: my $tag=$token->[1];
600: # get utterly rid of extended html tags
601: if ($tag=~/^x\-/i) { return ''; }
602: my $space=$Apache::lonxml::alltags{$tag}[-1];
603: if (!$space) {
604: $tag=~tr/A-Z/a-z/;
605: $sub=~tr/A-Z/a-z/;
606: $space=$Apache::lonxml::alltags{$tag}[-1]
607: }
608:
609: my $deleted=0;
610: if (($token->[0] eq 'S') && ($target eq 'modified')) {
611: $deleted=&Apache::edit::handle_delete($space,$target,$token,$tagstack,
612: $parstack,$parser,$safeeval,
613: $style);
614: }
615: if (!$deleted) {
616: if ($space) {
617: #&Apache::lonxml::debug("Calling sub $sub in $space $metamode");
618: $sub1="$space\:\:$sub";
619: ($currentstring,$nodefault) = &$sub1($target,$token,$tagstack,
620: $parstack,$parser,$safeeval,
621: $style);
622: } else {
623: if ($target eq 'tex') {
624: # throw away tag name
625: return '';
626: }
627: #&Apache::lonxml::debug("NOT Calling sub $sub in $space $metamode");
628: if ($metamode <1) {
629: if (defined($token->[4]) && ($metamode < 1)) {
630: $currentstring = $token->[4];
631: } else {
632: $currentstring = $token->[2];
633: }
634: }
635: }
636: # &Apache::lonxml::debug("nodefalt:$nodefault:");
637: if ($currentstring eq '' && $nodefault eq '') {
638: if ($target eq 'edit') {
639: #&Apache::lonxml::debug("doing default edit for $token->[1]");
640: if ($token->[0] eq 'S') {
641: $currentstring = &Apache::edit::tag_start($target,$token);
642: } elsif ($token->[0] eq 'E') {
643: $currentstring = &Apache::edit::tag_end($target,$token);
644: }
645: }
646: }
647: if ($target eq 'modified' && $nodefault eq '') {
648: if ($currentstring eq '') {
649: if ($token->[0] eq 'S') {
650: $currentstring = $token->[4];
651: } elsif ($token->[0] eq 'E') {
652: $currentstring = $token->[2];
653: } else {
654: $currentstring = $token->[2];
655: }
656: }
657: if ($token->[0] eq 'S') {
658: $currentstring.=&Apache::edit::handle_insert();
659: } elsif ($token->[0] eq 'E') {
660: $currentstring.=&Apache::edit::handle_insertafter($token->[1]);
661: }
662: }
663: }
664: use strict 'refs';
665: }
666: return $currentstring;
667: }
668:
669: {
670: my %state;
671:
672: sub init_state {
673: undef(%state);
674: }
675:
676: sub set_state {
677: my ($key,$value) = @_;
678: $state{$key} = $value;
679: return $value;
680: }
681: sub get_state {
682: my ($key) = @_;
683: return $state{$key};
684: }
685: }
686:
687: sub setup_globals {
688: my ($request,$target)=@_;
689: $Apache::lonxml::request=$request;
690: $errorcount=0;
691: $warningcount=0;
692: $Apache::lonxml::internal_error=0;
693: $Apache::lonxml::default_homework_loaded=0;
694: $Apache::lonxml::usestyle=1;
695: &init_counter();
696: &clear_bubble_lines_for_part();
697: &init_state();
698: &set_state('target',$target);
699: @Apache::lonxml::pwd=();
700: @Apache::lonxml::extlinks=();
701: @script_var_displays=();
702: @Apache::lonxml::ssi_info=();
703: $Apache::lonxml::post_evaluate=1;
704: $Apache::lonxml::warnings_error_header='';
705: $Apache::lonxml::substitute_LaTeX_symbols = 1;
706: if ($target eq 'meta') {
707: $Apache::lonxml::redirection = 0;
708: $Apache::lonxml::metamode = 1;
709: $Apache::lonxml::evaluate = 1;
710: $Apache::lonxml::import = 0;
711: } elsif ($target eq 'answer') {
712: $Apache::lonxml::redirection = 0;
713: $Apache::lonxml::metamode = 1;
714: $Apache::lonxml::evaluate = 1;
715: $Apache::lonxml::import = 1;
716: } elsif ($target eq 'grade') {
717: &startredirection(); #ended in inner_xmlparse on exit
718: $Apache::lonxml::metamode = 0;
719: $Apache::lonxml::evaluate = 1;
720: $Apache::lonxml::import = 1;
721: } elsif ($target eq 'modified') {
722: $Apache::lonxml::redirection = 0;
723: $Apache::lonxml::metamode = 0;
724: $Apache::lonxml::evaluate = 0;
725: $Apache::lonxml::import = 0;
726: } elsif ($target eq 'edit') {
727: $Apache::lonxml::redirection = 0;
728: $Apache::lonxml::metamode = 0;
729: $Apache::lonxml::evaluate = 0;
730: $Apache::lonxml::import = 0;
731: } elsif ($target eq 'analyze') {
732: $Apache::lonxml::redirection = 0;
733: $Apache::lonxml::metamode = 0;
734: $Apache::lonxml::evaluate = 1;
735: $Apache::lonxml::import = 1;
736: } else {
737: $Apache::lonxml::redirection = 0;
738: $Apache::lonxml::metamode = 0;
739: $Apache::lonxml::evaluate = 1;
740: $Apache::lonxml::import = 1;
741: }
742: }
743:
744: sub init_safespace {
745: my ($target,$safeeval,$safehole,$safeinit) = @_;
746: $safeeval->reval('use LaTeX::Table;');
747: $safeeval->deny_only(':dangerous');
748: $safeeval->reval('use Math::Complex;');
749: $safeeval->permit_only(":default");
750: $safeeval->permit("entereval");
751: $safeeval->permit(":base_math");
752: $safeeval->permit("sort");
753: $safeeval->permit("time");
754: $safeeval->permit("caller");
755: $safeeval->deny("rand");
756: $safeeval->deny("srand");
757: $safeeval->deny(":base_io");
758: $safehole->wrap(\&Apache::scripttag::xmlparse,$safeeval,'&xmlparse');
759: $safehole->wrap(\&Apache::outputtags::multipart,$safeeval,'&multipart');
760: $safehole->wrap(\&Apache::lonnet::EXT,$safeeval,'&EXT');
761: $safehole->wrap(\&Apache::chemresponse::chem_standard_order,$safeeval,
762: '&chem_standard_order');
763: $safehole->wrap(\&Apache::response::check_status,$safeeval,'&check_status');
764: $safehole->wrap(\&Apache::response::implicit_multiplication,$safeeval,'&implicit_multiplication');
765:
766: $safehole->wrap(\&Apache::lonmaxima::maxima_eval,$safeeval,'&maxima_eval');
767: $safehole->wrap(\&Apache::lonmaxima::maxima_check,$safeeval,'&maxima_check');
768: $safehole->wrap(\&Apache::lonmaxima::maxima_cas_formula_fix,$safeeval,
769: '&maxima_cas_formula_fix');
770:
771: $safehole->wrap(\&Apache::lonr::r_eval,$safeeval,'&r_eval');
772: $safehole->wrap(\&Apache::lonr::Rentry,$safeeval,'&Rentry');
773: $safehole->wrap(\&Apache::lonr::Rarray,$safeeval,'&Rarray');
774: $safehole->wrap(\&Apache::lonr::r_check,$safeeval,'&r_check');
775: $safehole->wrap(\&Apache::lonr::r_cas_formula_fix,$safeeval,
776: '&r_cas_formula_fix');
777:
778: $safehole->wrap(\&Apache::caparesponse::capa_formula_fix,$safeeval,
779: '&capa_formula_fix');
780:
781: $safehole->wrap(\&Apache::lonlocal::locallocaltime,$safeeval,
782: '&locallocaltime');
783:
784: $safehole->wrap(\&Math::Cephes::asin,$safeeval,'&asin');
785: $safehole->wrap(\&Math::Cephes::acos,$safeeval,'&acos');
786: $safehole->wrap(\&Math::Cephes::atan,$safeeval,'&atan');
787: $safehole->wrap(\&Math::Cephes::sinh,$safeeval,'&sinh');
788: $safehole->wrap(\&Math::Cephes::cosh,$safeeval,'&cosh');
789: $safehole->wrap(\&Math::Cephes::tanh,$safeeval,'&tanh');
790: $safehole->wrap(\&Math::Cephes::asinh,$safeeval,'&asinh');
791: $safehole->wrap(\&Math::Cephes::acosh,$safeeval,'&acosh');
792: $safehole->wrap(\&Math::Cephes::atanh,$safeeval,'&atanh');
793: $safehole->wrap(\&Math::Cephes::erf,$safeeval,'&erf');
794: $safehole->wrap(\&Math::Cephes::erfc,$safeeval,'&erfc');
795: $safehole->wrap(\&Math::Cephes::j0,$safeeval,'&j0');
796: $safehole->wrap(\&Math::Cephes::j1,$safeeval,'&j1');
797: $safehole->wrap(\&Math::Cephes::jn,$safeeval,'&jn');
798: $safehole->wrap(\&Math::Cephes::jv,$safeeval,'&jv');
799: $safehole->wrap(\&Math::Cephes::y0,$safeeval,'&y0');
800: $safehole->wrap(\&Math::Cephes::y1,$safeeval,'&y1');
801: $safehole->wrap(\&Math::Cephes::yn,$safeeval,'&yn');
802: $safehole->wrap(\&Math::Cephes::yv,$safeeval,'&yv');
803:
804: $safehole->wrap(\&Math::Cephes::bdtr ,$safeeval,'&bdtr' );
805: $safehole->wrap(\&Math::Cephes::bdtrc ,$safeeval,'&bdtrc' );
806: $safehole->wrap(\&Math::Cephes::bdtri ,$safeeval,'&bdtri' );
807: $safehole->wrap(\&Math::Cephes::btdtr ,$safeeval,'&btdtr' );
808: $safehole->wrap(\&Math::Cephes::chdtr ,$safeeval,'&chdtr' );
809: $safehole->wrap(\&Math::Cephes::chdtrc,$safeeval,'&chdtrc');
810: $safehole->wrap(\&Math::Cephes::chdtri,$safeeval,'&chdtri');
811: $safehole->wrap(\&Math::Cephes::fdtr ,$safeeval,'&fdtr' );
812: $safehole->wrap(\&Math::Cephes::fdtrc ,$safeeval,'&fdtrc' );
813: $safehole->wrap(\&Math::Cephes::fdtri ,$safeeval,'&fdtri' );
814: $safehole->wrap(\&Math::Cephes::gdtr ,$safeeval,'&gdtr' );
815: $safehole->wrap(\&Math::Cephes::gdtrc ,$safeeval,'&gdtrc' );
816: $safehole->wrap(\&Math::Cephes::nbdtr ,$safeeval,'&nbdtr' );
817: $safehole->wrap(\&Math::Cephes::nbdtrc,$safeeval,'&nbdtrc');
818: $safehole->wrap(\&Math::Cephes::nbdtri,$safeeval,'&nbdtri');
819: $safehole->wrap(\&Math::Cephes::ndtr ,$safeeval,'&ndtr' );
820: $safehole->wrap(\&Math::Cephes::ndtri ,$safeeval,'&ndtri' );
821: $safehole->wrap(\&Math::Cephes::pdtr ,$safeeval,'&pdtr' );
822: $safehole->wrap(\&Math::Cephes::pdtrc ,$safeeval,'&pdtrc' );
823: $safehole->wrap(\&Math::Cephes::pdtri ,$safeeval,'&pdtri' );
824: $safehole->wrap(\&Math::Cephes::stdtr ,$safeeval,'&stdtr' );
825: $safehole->wrap(\&Math::Cephes::stdtri,$safeeval,'&stdtri');
826:
827: $safehole->wrap(\&Math::Cephes::Matrix::mat,$safeeval,'&mat');
828: $safehole->wrap(\&Math::Cephes::Matrix::new,$safeeval,
829: '&Math::Cephes::Matrix::new');
830: $safehole->wrap(\&Math::Cephes::Matrix::coef,$safeeval,
831: '&Math::Cephes::Matrix::coef');
832: $safehole->wrap(\&Math::Cephes::Matrix::clr,$safeeval,
833: '&Math::Cephes::Matrix::clr');
834: $safehole->wrap(\&Math::Cephes::Matrix::add,$safeeval,
835: '&Math::Cephes::Matrix::add');
836: $safehole->wrap(\&Math::Cephes::Matrix::sub,$safeeval,
837: '&Math::Cephes::Matrix::sub');
838: $safehole->wrap(\&Math::Cephes::Matrix::mul,$safeeval,
839: '&Math::Cephes::Matrix::mul');
840: $safehole->wrap(\&Math::Cephes::Matrix::div,$safeeval,
841: '&Math::Cephes::Matrix::div');
842: $safehole->wrap(\&Math::Cephes::Matrix::inv,$safeeval,
843: '&Math::Cephes::Matrix::inv');
844: $safehole->wrap(\&Math::Cephes::Matrix::transp,$safeeval,
845: '&Math::Cephes::Matrix::transp');
846: $safehole->wrap(\&Math::Cephes::Matrix::simq,$safeeval,
847: '&Math::Cephes::Matrix::simq');
848: $safehole->wrap(\&Math::Cephes::Matrix::mat_to_vec,$safeeval,
849: '&Math::Cephes::Matrix::mat_to_vec');
850: $safehole->wrap(\&Math::Cephes::Matrix::vec_to_mat,$safeeval,
851: '&Math::Cephes::Matrix::vec_to_mat');
852: $safehole->wrap(\&Math::Cephes::Matrix::check,$safeeval,
853: '&Math::Cephes::Matrix::check');
854: $safehole->wrap(\&Math::Cephes::Matrix::check,$safeeval,
855: '&Math::Cephes::Matrix::check');
856:
857: # $safehole->wrap(\&Math::Cephes::new_fract,$safeeval,'&new_fract');
858: # $safehole->wrap(\&Math::Cephes::radd,$safeeval,'&radd');
859: # $safehole->wrap(\&Math::Cephes::rsub,$safeeval,'&rsub');
860: # $safehole->wrap(\&Math::Cephes::rmul,$safeeval,'&rmul');
861: # $safehole->wrap(\&Math::Cephes::rdiv,$safeeval,'&rdiv');
862: # $safehole->wrap(\&Math::Cephes::euclid,$safeeval,'&euclid');
863:
864: $safehole->wrap(\&Math::Random::random_beta,$safeeval,'&math_random_beta');
865: $safehole->wrap(\&Math::Random::random_chi_square,$safeeval,'&math_random_chi_square');
866: $safehole->wrap(\&Math::Random::random_exponential,$safeeval,'&math_random_exponential');
867: $safehole->wrap(\&Math::Random::random_f,$safeeval,'&math_random_f');
868: $safehole->wrap(\&Math::Random::random_gamma,$safeeval,'&math_random_gamma');
869: $safehole->wrap(\&Math::Random::random_multivariate_normal,$safeeval,'&math_random_multivariate_normal');
870: $safehole->wrap(\&Math::Random::random_multinomial,$safeeval,'&math_random_multinomial');
871: $safehole->wrap(\&Math::Random::random_noncentral_chi_square,$safeeval,'&math_random_noncentral_chi_square');
872: $safehole->wrap(\&Math::Random::random_noncentral_f,$safeeval,'&math_random_noncentral_f');
873: $safehole->wrap(\&Math::Random::random_normal,$safeeval,'&math_random_normal');
874: $safehole->wrap(\&Math::Random::random_permutation,$safeeval,'&math_random_permutation');
875: $safehole->wrap(\&Math::Random::random_permuted_index,$safeeval,'&math_random_permuted_index');
876: $safehole->wrap(\&Math::Random::random_uniform,$safeeval,'&math_random_uniform');
877: $safehole->wrap(\&Math::Random::random_poisson,$safeeval,'&math_random_poisson');
878: $safehole->wrap(\&Math::Random::random_uniform_integer,$safeeval,'&math_random_uniform_integer');
879: $safehole->wrap(\&Math::Random::random_negative_binomial,$safeeval,'&math_random_negative_binomial');
880: $safehole->wrap(\&Math::Random::random_binomial,$safeeval,'&math_random_binomial');
881: $safehole->wrap(\&Math::Random::random_seed_from_phrase,$safeeval,'&random_seed_from_phrase');
882: $safehole->wrap(\&Math::Random::random_set_seed_from_phrase,$safeeval,'&random_set_seed_from_phrase');
883: $safehole->wrap(\&Math::Random::random_get_seed,$safeeval,'&random_get_seed');
884: $safehole->wrap(\&Math::Random::random_set_seed,$safeeval,'&random_set_seed');
885: $safehole->wrap(\&Apache::loncommon::languages,$safeeval,'&languages');
886: $safehole->wrap(\&Apache::lonxml::error,$safeeval,'&LONCAPA_INTERNAL_ERROR');
887: $safehole->wrap(\&Apache::lonxml::debug,$safeeval,'&LONCAPA_INTERNAL_DEBUG');
888: $safehole->wrap(\&Apache::lonnet::logthis,$safeeval,'&LONCAPA_INTERNAL_LOGTHIS');
889: $safehole->wrap(\&Apache::inputtags::finalizeawards,$safeeval,'&LONCAPA_INTERNAL_FINALIZEAWARDS');
890: $safehole->wrap(\&Apache::caparesponse::get_sigrange,$safeeval,'&LONCAPA_INTERNAL_get_sigrange');
891: $safehole->wrap(\&Apache::functionplotresponse::fpr_val,$safeeval,'&fpr_val');
892: $safehole->wrap(\&Apache::functionplotresponse::fpr_f,$safeeval,'&fpr_f');
893: $safehole->wrap(\&Apache::functionplotresponse::fpr_dfdx,$safeeval,'&fpr_dfdx');
894: $safehole->wrap(\&Apache::functionplotresponse::fpr_d2fdx2,$safeeval,'&fpr_d2fdx2');
895: $safehole->wrap(\&Apache::functionplotresponse::fpr_vectorcoords,$safeeval,'&fpr_vectorcoords');
896: $safehole->wrap(\&Apache::functionplotresponse::fpr_objectcoords,$safeeval,'&fpr_objectcoords');
897: $safehole->wrap(\&Apache::functionplotresponse::fpr_vectorlength,$safeeval,'&fpr_vectorlength');
898: $safehole->wrap(\&Apache::functionplotresponse::fpr_vectorangle,$safeeval,'&fpr_vectorangle');
899:
900: # use Data::Dumper;
901: # $safehole->wrap(\&Data::Dumper::Dumper,$safeeval,'&LONCAPA_INTERNAL_Dumper');
902: #need to inspect this class of ops
903: # $safeeval->deny(":base_orig");
904: $safeeval->permit("require");
905: $safeinit .= ';$external::target="'.$target.'";';
906: &Apache::run::run($safeinit,$safeeval);
907: &initialize_rndseed($safeeval);
908: }
909:
910: sub clean_safespace {
911: my ($safeeval) = @_;
912: delete_package_recurse($safeeval->{Root});
913: }
914:
915: sub delete_package_recurse {
916: my ($package) = @_;
917: my @subp;
918: {
919: no strict 'refs';
920: while (my ($key,$val) = each(%{*{"$package\::"}})) {
921: if (!defined($val)) { next; }
922: local (*ENTRY) = $val;
923: if (defined *ENTRY{HASH} && $key =~ /::$/ &&
924: $key ne "main::" && $key ne "<none>::")
925: {
926: my ($p) = $package ne "main" ? "$package\::" : "";
927: ($p .= $key) =~ s/::$//;
928: push(@subp,$p);
929: }
930: }
931: }
932: foreach my $p (@subp) {
933: delete_package_recurse($p);
934: }
935: Symbol::delete_package($package);
936: }
937:
938: sub initialize_rndseed {
939: my ($safeeval)=@_;
940: my $rndseed;
941: my ($symb,$courseid,$domain,$name) = &Apache::lonnet::whichuser();
942: $rndseed=&Apache::lonnet::rndseed($symb,$courseid,$domain,$name);
943: my $safeinit = '$external::randomseed="'.$rndseed.'";';
944: &Apache::lonxml::debug("Setting rndseed to $rndseed");
945: &Apache::run::run($safeinit,$safeeval);
946: }
947:
948: sub default_homework_load {
949: my ($safeeval)=@_;
950: &Apache::lonxml::debug('Loading default_homework');
951: my $default=&Apache::lonnet::getfile($Apache::lonnet::perlvar{'lonIncludes'}.
952: '/default_homework.lcpm');
953: if ($default eq -1) {
954: &Apache::lonxml::error("<b>Unable to find <i>default_homework.lcpm</i></b>");
955: } else {
956: &Apache::run::run($default,$safeeval);
957: $Apache::lonxml::default_homework_loaded=1;
958: }
959: }
960:
961: {
962: my $alarm_depth;
963: sub init_alarm {
964: alarm(0);
965: $alarm_depth=0;
966: }
967:
968: sub start_alarm {
969: if ($alarm_depth<1) {
970: my $old=alarm($Apache::lonnet::perlvar{'lonScriptTimeout'});
971: if ($old) {
972: &Apache::lonxml::error("Cancelled an alarm of $old, this shouldn't occur.");
973: }
974: }
975: $alarm_depth++;
976: }
977:
978: sub end_alarm {
979: $alarm_depth--;
980: if ($alarm_depth<1) { alarm(0); }
981: }
982: }
983: my $metamode_was;
984: sub startredirection {
985: if (!$Apache::lonxml::redirection) {
986: $metamode_was=$Apache::lonxml::metamode;
987: }
988: $Apache::lonxml::metamode=0;
989: $Apache::lonxml::redirection++;
990: push (@Apache::lonxml::outputstack, '');
991: }
992:
993: sub endredirection {
994: if (!$Apache::lonxml::redirection) {
995: &Apache::lonxml::error("Endredirection was called before a startredirection, perhaps you have unbalanced tags. Some debugging information:".join ":",caller);
996: return '';
997: }
998: $Apache::lonxml::redirection--;
999: if (!$Apache::lonxml::redirection) {
1000: $Apache::lonxml::metamode=$metamode_was;
1001: }
1002: pop @Apache::lonxml::outputstack;
1003: }
1004: sub in_redirection {
1005: return ($Apache::lonxml::redirection > 0)
1006: }
1007:
1008: sub end_tag {
1009: my ($tagstack,$parstack,$token)=@_;
1010: pop(@$tagstack);
1011: pop(@$parstack);
1012: &decreasedepth($token);
1013: }
1014:
1015: sub initdepth {
1016: @Apache::lonxml::depthcounter=();
1017: undef($Apache::lonxml::last_depth_count);
1018: }
1019:
1020:
1021: my @timers;
1022: my $lasttime;
1023: # @Apache::lonxml::depthcounter -> count of tags that exist so
1024: # far at each level
1025: # $Apache::lonxml::last_depth_count -> when ascending, need to
1026: # remember the count for the level below the current level (for
1027: # example going from 1_2 -> 1 -> 1_3 need to remember the 2 )
1028:
1029: sub increasedepth {
1030: my ($token) = @_;
1031: push(@Apache::lonxml::depthcounter,$Apache::lonxml::last_depth_count+1);
1032: undef($Apache::lonxml::last_depth_count);
1033: my $time;
1034: if ($Apache::lonxml::debug eq "1") {
1035: push(@timers,[&gettimeofday()]);
1036: $time=&tv_interval($lasttime);
1037: $lasttime=[&gettimeofday()];
1038: }
1039: my $spacing=' 'x($#Apache::lonxml::depthcounter);
1040: $Apache::lonxml::curdepth=join('_',@Apache::lonxml::depthcounter);
1041: # &Apache::lonxml::debug("s$spacing$Apache::lonxml::depth : $Apache::lonxml::olddepth : $Apache::lonxml::curdepth : $token->[1] : $time");
1042: #print "<br />s $Apache::lonxml::depth : $Apache::lonxml::olddepth : $curdepth : $token->[1]\n";
1043: }
1044:
1045: sub decreasedepth {
1046: my ($token) = @_;
1047: if ( $#Apache::lonxml::depthcounter == -1) {
1048: &Apache::lonxml::warning(&mt("Missing tags, unable to properly run file."));
1049: }
1050: $Apache::lonxml::last_depth_count = pop(@Apache::lonxml::depthcounter);
1051:
1052: my ($timer,$time);
1053: if ($Apache::lonxml::debug eq "1") {
1054: $timer=pop(@timers);
1055: $time=&tv_interval($lasttime);
1056: $lasttime=[&gettimeofday()];
1057: }
1058: my $spacing=' 'x($#Apache::lonxml::depthcounter);
1059: $Apache::lonxml::curdepth = join('_',@Apache::lonxml::depthcounter);
1060: # &Apache::lonxml::debug("e$spacing$Apache::lonxml::depth : $Apache::lonxml::olddepth : $Apache::lonxml::curdepth : $token->[1] : $time : ".&tv_interval($timer));
1061: #print "<br />e $Apache::lonxml::depth : $Apache::lonxml::olddepth : $token->[1] : $curdepth\n";
1062: }
1063:
1064: sub get_id {
1065: my ($parstack,$safeeval)=@_;
1066: my $id= &Apache::lonxml::get_param('id',$parstack,$safeeval);
1067: if ($env{'request.state'} eq 'construct' && $id =~ /([._]|[^\w\d\s[:punct:]])/) {
1068: &error(&mt('ID [_1] contains invalid characters. IDs are only allowed to contain letters, numbers, spaces and -','"<tt>'.$id.'</tt>"'));
1069: }
1070: if ($id =~ /^\s*$/) { $id = $Apache::lonxml::curdepth; }
1071: return $id;
1072: }
1073:
1074: sub get_all_text_unbalanced {
1075: #there is a copy of this in lonpublisher.pm
1076: my($tag,$pars)= @_;
1077: my $token;
1078: my $result='';
1079: $tag='<'.$tag.'>';
1080: while ($token = $$pars[-1]->get_token) {
1081: if (($token->[0] eq 'T')||($token->[0] eq 'C')||($token->[0] eq 'D')) {
1082: if ($token->[0] eq 'T' && $token->[2]) {
1083: $result.='<![CDATA['.$token->[1].']]>';
1084: } else {
1085: $result.=$token->[1];
1086: }
1087: } elsif ($token->[0] eq 'PI') {
1088: $result.=$token->[2];
1089: } elsif ($token->[0] eq 'S') {
1090: $result.=$token->[4];
1091: } elsif ($token->[0] eq 'E') {
1092: $result.=$token->[2];
1093: }
1094: if ($result =~ /\Q$tag\E/is) {
1095: ($result,my $redo)=$result =~ /(.*)\Q$tag\E(.*)/is;
1096: #&Apache::lonxml::debug('Got a winner with leftovers ::'.$2);
1097: #&Apache::lonxml::debug('Result is :'.$1);
1098: $redo=$tag.$redo;
1099: &Apache::lonxml::newparser($pars,\$redo);
1100: last;
1101: }
1102: }
1103: return $result
1104:
1105: }
1106:
1107: #########################################################################
1108: # #
1109: # bubble line counter management #
1110: # #
1111: #########################################################################
1112:
1113: =pod
1114:
1115: For bubble grading mode and exam bubble printing mode, the tracking of
1116: the current 'bubble line number' is stored in the %env element
1117: 'form.counter', and is modifed and handled by the following routines.
1118:
1119: The value of it is stored in $Apache:lonxml::counter when live and
1120: stored back to env after done.
1121:
1122: =item &increment_counter($increment, $part_response);
1123:
1124: Increments the internal counter environment variable a specified amount
1125:
1126: Optional Arguments:
1127: $increment - amount to increment by (defaults to 1)
1128: Also 1 if the value is negative or zero.
1129: $part_response - A concatenation of the part and response id
1130: identifying exactly what is being 'answered'.
1131:
1132:
1133: =cut
1134:
1135: sub increment_counter {
1136: my ($increment, $part_response) = @_;
1137: if ($env{'form.grade_noincrement'}) { return; }
1138: if (!defined($increment) || $increment le 0) {
1139: $increment = 1;
1140: }
1141: $Apache::lonxml::counter += $increment;
1142:
1143: # If the caller supplied the response_id parameter,
1144: # Maintain its counter.. creating if necessary.
1145:
1146: if (defined($part_response)) {
1147: if (!defined($Apache::lonxml::counters_per_part{$part_response})) {
1148: $Apache::lonxml::counters_per_part{$part_response} = 0;
1149: }
1150: $Apache::lonxml::counters_per_part{$part_response} += $increment;
1151: my $new_value = $Apache::lonxml::counters_per_part{$part_response};
1152: }
1153:
1154: $Apache::lonxml::counter_changed=1;
1155: }
1156:
1157: =pod
1158:
1159: =item &init_counter($increment);
1160:
1161: Initialize the internal counter environment variable
1162:
1163: =cut
1164:
1165: sub init_counter {
1166: if ($env{'request.state'} eq 'construct') {
1167: $Apache::lonxml::counter=1;
1168: $Apache::lonxml::counter_changed=1;
1169: } elsif (defined($env{'form.counter'})) {
1170: $Apache::lonxml::counter=$env{'form.counter'};
1171: $Apache::lonxml::counter_changed=0;
1172: } else {
1173: $Apache::lonxml::counter=1;
1174: $Apache::lonxml::counter_changed=1;
1175: }
1176: }
1177:
1178: sub store_counter {
1179: &Apache::lonnet::appenv({'form.counter' => $Apache::lonxml::counter});
1180: $Apache::lonxml::counter_changed=0;
1181: return '';
1182: }
1183:
1184: {
1185: my $state;
1186: sub clear_problem_counter {
1187: undef($state);
1188: &Apache::lonnet::delenv('form.counter');
1189: &Apache::lonxml::init_counter();
1190: &Apache::lonxml::store_counter();
1191: }
1192:
1193: sub remember_problem_counter {
1194: &Apache::lonnet::transfer_profile_to_env(undef,undef,1);
1195: $state = $env{'form.counter'};
1196: }
1197:
1198: sub restore_problem_counter {
1199: if (defined($state)) {
1200: &Apache::lonnet::appenv({'form.counter' => $state});
1201: }
1202: }
1203: sub get_problem_counter {
1204: if ($Apache::lonxml::counter_changed) { &store_counter() }
1205: &Apache::lonnet::transfer_profile_to_env(undef,undef,1);
1206: return $env{'form.counter'};
1207: }
1208: }
1209:
1210: =pod
1211:
1212: =item bubble_lines_for_part(part_response)
1213:
1214: Returns the number of lines required to get a response for
1215: $part_response (this is just $Apache::lonxml::counters_per_part{$part_response}
1216:
1217: =cut
1218:
1219: sub bubble_lines_for_part {
1220: my ($part_response) = @_;
1221:
1222: if (!defined($Apache::lonxml::counters_per_part{$part_response})) {
1223: return 0;
1224: } else {
1225: return $Apache::lonxml::counters_per_part{$part_response};
1226: }
1227: }
1228:
1229: =pod
1230:
1231: =item clear_bubble_lines_for_part
1232:
1233: Clears the hash of bubble lines per part. If a caller
1234: needs to analyze several resources this should be called between
1235: resources to reset the hash for each problem being analyzed.
1236:
1237: =cut
1238:
1239: sub clear_bubble_lines_for_part {
1240: undef(%Apache::lonxml::counters_per_part);
1241: }
1242:
1243: =pod
1244:
1245: =item set_bubble_lines(part_response, value)
1246:
1247: If there is a problem part, that for whatever reason
1248: requires bubble lines that are not
1249: the same as the counter increment, it can call this sub during
1250: analysis to set its hash value explicitly.
1251:
1252: =cut
1253:
1254: sub set_bubble_lines {
1255: my ($part_response, $value) = @_;
1256:
1257: $Apache::lonxml::counters_per_part{$part_response} = $value;
1258: }
1259:
1260: =pod
1261:
1262: =item get_bubble_line_hash
1263:
1264: Returns the current bubble line hash. This is assumed to
1265: be small so we return a copy
1266:
1267:
1268: =cut
1269:
1270: sub get_bubble_line_hash {
1271: return %Apache::lonxml::counters_per_part;
1272: }
1273:
1274:
1275: #--------------------------------------------------
1276:
1277: sub get_all_text {
1278: my($tag,$pars,$style)= @_;
1279: my $gotfullstack=1;
1280: if (ref($pars) ne 'ARRAY') {
1281: $gotfullstack=0;
1282: $pars=[$pars];
1283: }
1284: if (ref($style) ne 'HASH') {
1285: $style={};
1286: }
1287: my $depth=0;
1288: my $token;
1289: my $result='';
1290: if ( $tag =~ m:^/: ) {
1291: my $tag=substr($tag,1);
1292: #&Apache::lonxml::debug("have:$tag:");
1293: my $top_empty=0;
1294: while (($depth >=0) && ($#$pars > -1) && (!$top_empty)) {
1295: while (($depth >=0) && ($token = $$pars[-1]->get_token)) {
1296: #&Apache::lonxml::debug("e token:$token->[0]:$depth:$token->[1]:".$#$pars.":".$#Apache::lonxml::pwd);
1297: if (($token->[0] eq 'T')||($token->[0] eq 'C')||($token->[0] eq 'D')) {
1298: if ($token->[2]) {
1299: $result.='<![CDATA['.$token->[1].']]>';
1300: } else {
1301: $result.=$token->[1];
1302: }
1303: } elsif ($token->[0] eq 'PI') {
1304: $result.=$token->[2];
1305: } elsif ($token->[0] eq 'S') {
1306: if ($token->[1] =~ /^\Q$tag\E$/i) { $depth++; }
1307: if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_ON$/) { $Apache::lonxml::usestyle=1; }
1308: if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_OFF$/) { $Apache::lonxml::usestyle=0; }
1309: $result.=$token->[4];
1310: } elsif ($token->[0] eq 'E') {
1311: if ( $token->[1] =~ /^\Q$tag\E$/i) { $depth--; }
1312: #skip sending back the last end tag
1313: if ($depth == 0 && exists($$style{'/'.$token->[1]}) && $Apache::lonxml::usestyle) {
1314: my $string=
1315: '<LONCAPA_INTERNAL_TURN_STYLE_OFF end="yes" />'.
1316: $$style{'/'.$token->[1]}.
1317: $token->[2].
1318: '<LONCAPA_INTERNAL_TURN_STYLE_ON />';
1319: &Apache::lonxml::newparser($pars,\$string);
1320: #&Apache::lonxml::debug("reParsing $string");
1321: next;
1322: }
1323: if ($depth > -1) {
1324: $result.=$token->[2];
1325: } else {
1326: $$pars[-1]->unget_token($token);
1327: }
1328: }
1329: }
1330: if (($depth >=0) && ($#$pars == 0) ) { $top_empty=1; }
1331: if (($depth >=0) && ($#$pars > 0) ) {
1332: pop(@$pars);
1333: pop(@Apache::lonxml::pwd);
1334: }
1335: }
1336: if ($top_empty && $depth >= 0) {
1337: #never found the end tag ran out of text, throw error send back blank
1338: &error('Never found end tag for <'.$tag.
1339: '> current string <pre>'.
1340: &HTML::Entities::encode($result,'<>&"').
1341: '</pre>');
1342: if ($gotfullstack) {
1343: my $newstring='</'.$tag.'>'.$result;
1344: &Apache::lonxml::newparser($pars,\$newstring);
1345: }
1346: $result='';
1347: }
1348: } else {
1349: while ($#$pars > -1) {
1350: while ($token = $$pars[-1]->get_token) {
1351: #&Apache::lonxml::debug("s token:$token->[0]:$depth:$token->[1]");
1352: if (($token->[0] eq 'T')||($token->[0] eq 'C')||
1353: ($token->[0] eq 'D')) {
1354: if ($token->[2]) {
1355: $result.='<![CDATA['.$token->[1].']]>';
1356: } else {
1357: $result.=$token->[1];
1358: }
1359: } elsif ($token->[0] eq 'PI') {
1360: $result.=$token->[2];
1361: } elsif ($token->[0] eq 'S') {
1362: if ( $token->[1] =~ /^\Q$tag\E$/i) {
1363: $$pars[-1]->unget_token($token); last;
1364: } else {
1365: $result.=$token->[4];
1366: }
1367: if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_ON$/) { $Apache::lonxml::usestyle=1; }
1368: if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_OFF$/) { $Apache::lonxml::usestyle=0; }
1369: } elsif ($token->[0] eq 'E') {
1370: $result.=$token->[2];
1371: }
1372: }
1373: if (($#$pars > 0) ) {
1374: pop(@$pars);
1375: pop(@Apache::lonxml::pwd);
1376: } else { last; }
1377: }
1378: }
1379: #&Apache::lonxml::debug("Exit:$result:");
1380: return $result
1381: }
1382:
1383: sub newparser {
1384: my ($parser,$contentref,$dir) = @_;
1385: push (@$parser,HTML::LCParser->new($contentref));
1386: $$parser[-1]->xml_mode(1);
1387: $$parser[-1]->marked_sections(1);
1388: if ( $dir eq '' ) {
1389: push (@Apache::lonxml::pwd, $Apache::lonxml::pwd[$#Apache::lonxml::pwd]);
1390: } else {
1391: push (@Apache::lonxml::pwd, $dir);
1392: }
1393: }
1394:
1395: sub parstring {
1396: my ($token) = @_;
1397: my (@vars,@values);
1398: foreach my $attr (@{$token->[3]}) {
1399: if ($attr!~/\W/) {
1400: my $val=$token->[2]->{$attr};
1401: $val =~ s/([\%\@\\\"\'])/\\$1/g;
1402: $val =~ s/(\$[^\{a-zA-Z_])/\\$1/g;
1403: $val =~ s/(\$)$/\\$1/;
1404: #if ($val =~ m/^[\%\@]/) { $val="\\".$val; }
1405: push(@vars,"\$$attr");
1406: push(@values,"\"$val\"");
1407: }
1408: }
1409: my $var_init =
1410: (@vars) ? 'my ('.join(',',@vars).') = ('.join(',',@values).');'
1411: : '';
1412: return $var_init;
1413: }
1414:
1415: sub extlink {
1416: my ($res,$exact)=@_;
1417: if (!$exact) {
1418: $res=&Apache::lonnet::hreflocation($Apache::lonxml::pwd[-1],$res);
1419: }
1420: push(@Apache::lonxml::extlinks,$res)
1421: }
1422:
1423: sub writeallows {
1424: unless ($#extlinks>=0) { return; }
1425: my $thisurl = &Apache::lonnet::clutter(shift);
1426: if ($env{'httpref.'.$thisurl}) {
1427: $thisurl=$env{'httpref.'.$thisurl};
1428: }
1429: my $thisdir=$thisurl;
1430: $thisdir=~s/\/[^\/]+$//;
1431: my %httpref=();
1432: foreach (@extlinks) {
1433: $httpref{'httpref.'.
1434: &Apache::lonnet::hreflocation($thisdir,&unescape($_))}=$thisurl;
1435: }
1436: @extlinks=();
1437: &Apache::lonnet::appenv(\%httpref);
1438: }
1439:
1440: sub register_ssi {
1441: my ($url,%form)=@_;
1442: push (@Apache::lonxml::ssi_info,{'url'=>$url,'form'=>\%form});
1443: return '';
1444: }
1445:
1446: sub do_registered_ssi {
1447: foreach my $info (@Apache::lonxml::ssi_info) {
1448: my %form=%{ $info->{'form'}};
1449: my $url=$info->{'url'};
1450: &Apache::lonnet::ssi($url,%form);
1451: }
1452: }
1453:
1454: sub add_script_result {
1455: my ($display) = @_;
1456: push(@script_var_displays, $display);
1457: }
1458:
1459: #
1460: # Afterburner handles anchors, highlights and links
1461: #
1462: sub afterburn {
1463: my $result=shift;
1464: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
1465: ['highlight','anchor','link']);
1466: if ($env{'form.highlight'}) {
1467: foreach (split(/\,/,$env{'form.highlight'})) {
1468: my $anchorname=$_;
1469: my $matchthis=$anchorname;
1470: $matchthis=~s/\_+/\\s\+/g;
1471: $result=~s/(\Q$matchthis\E)/\<font color=\"red\"\>$1\<\/font\>/gs;
1472: }
1473: }
1474: if ($env{'form.link'}) {
1475: foreach (split(/\,/,$env{'form.link'})) {
1476: my ($anchorname,$linkurl)=split(/\>/,$_);
1477: my $matchthis=$anchorname;
1478: $matchthis=~s/\_+/\\s\+/g;
1479: $result=~s/(\Q$matchthis\E)/\<a href=\"$linkurl\"\>$1\<\/a\>/gs;
1480: }
1481: }
1482: if ($env{'form.anchor'}) {
1483: my $anchorname=$env{'form.anchor'};
1484: my $matchthis=$anchorname;
1485: $matchthis=~s/\_+/\\s\+/g;
1486: $result=~s/(\Q$matchthis\E)/\<a name=\"$anchorname\"\>$1\<\/a\>/s;
1487: $result.=(<<"ENDSCRIPT");
1488: <script type="text/javascript">
1489: document.location.hash='$anchorname';
1490: </script>
1491: ENDSCRIPT
1492: }
1493: return $result;
1494: }
1495:
1496: sub storefile {
1497: my ($file,$contents)=@_;
1498: &Apache::lonnet::correct_line_ends(\$contents);
1499: if (my $fh=Apache::File->new('>'.$file)) {
1500: print $fh $contents;
1501: $fh->close();
1502: return 1;
1503: } else {
1504: &warning(&mt('Unable to save file [_1]','<tt>'.$file.'</tt>'));
1505: return 0;
1506: }
1507: }
1508:
1509: sub createnewhtml {
1510: my $title=&mt('Title of document goes here');
1511: my $body=&mt('Body of document goes here');
1512: my $filecontents=(<<SIMPLECONTENT);
1513: <html>
1514: <head>
1515: <title>$title</title>
1516: </head>
1517: <body bgcolor="#FFFFFF">
1518: $body
1519: </body>
1520: </html>
1521: SIMPLECONTENT
1522: return $filecontents;
1523: }
1524:
1525: sub createnewsty {
1526: my $filecontents=(<<SIMPLECONTENT);
1527: <definetag name="">
1528: <render>
1529: <web></web>
1530: <tex></tex>
1531: </render>
1532: </definetag>
1533: SIMPLECONTENT
1534: return $filecontents;
1535: }
1536:
1537: sub createnewjs {
1538: my $filecontents=(<<SIMPLECONTENT);
1539: <script type="text/javascript" language="Javascript">
1540:
1541: </script>
1542: SIMPLECONTENT
1543: return $filecontents;
1544: }
1545:
1546: sub verify_html {
1547: my ($filecontents)=@_;
1548: my ($is_html,$is_xml);
1549: if ($filecontents =~/(?:\<|\<\;)\?xml[^\<]*\?(?:\>|\>\;)/is) {
1550: $is_xml = 1;
1551: } elsif ($filecontents =~/(?:\<|\<\;)html(?:\s+[^\<]+|\s*)(?:\>|\>\;)/is) {
1552: $is_html = 1;
1553: }
1554: unless ($is_xml || $is_html) {
1555: return &mt('File does not have [_1] or [_2] starting tag','<html>','<?xml ?>');
1556: }
1557: if ($is_html) {
1558: if ($filecontents!~/(?:\<|\<\;)\/html(?:\>|\>\;)/is) {
1559: return &mt('File does not have [_1] ending tag','<html>');
1560: }
1561: if ($filecontents!~/(?:\<|\<\;)(?:body|frameset)[^\<]*(?:\>|\>\;)/is) {
1562: return &mt('File does not have [_1] or [_2] starting tag','<body>','<frameset>');
1563: }
1564: if ($filecontents!~/(?:\<|\<\;)\/(?:body|frameset)[^\<]*(?:\>|\>\;)/is) {
1565: return &mt('File does not have [_1] or [_2] ending tag','<body>','<frameset>');
1566: }
1567: }
1568: return '';
1569: }
1570:
1571: sub renderingoptions {
1572: my %langchoices=('' => '');
1573: foreach (&Apache::loncommon::languageids()) {
1574: if (&Apache::loncommon::supportedlanguagecode($_)) {
1575: $langchoices{&Apache::loncommon::supportedlanguagecode($_)}
1576: = &Apache::loncommon::plainlanguagedescription($_);
1577: }
1578: }
1579: my $output;
1580: unless ($env{'form.forceedit'}) {
1581: $output .=
1582: '<span class="LC_nobreak">'.
1583: &mt('Language:').' '.
1584: &Apache::loncommon::select_form(
1585: $env{'form.languages'},
1586: 'languages',
1587: {&Apache::lonlocal::texthash(%langchoices)}).
1588: '</span>';
1589: }
1590: $output .=
1591: ' <span class="LC_nobreak">'.
1592: &mt('Math Rendering:').' '.
1593: &Apache::loncommon::select_form(
1594: $env{'form.texengine'},
1595: 'texengine',
1596: {&Apache::lonlocal::texthash
1597: ('' => '',
1598: 'tth' => 'tth (TeX to HTML)',
1599: 'MathJax' => 'MathJax',
1600: 'jsMath' => 'jsMath',
1601: 'mimetex' => 'mimetex (Convert to Images)')}).
1602: '</span>';
1603: return $output;
1604: }
1605:
1606: sub inserteditinfo {
1607: my ($filecontents,$filetype,$filename,$symb,$itemtitle,$folderpath,$uri) = @_;
1608: $filecontents = &HTML::Entities::encode($filecontents,'<>&"');
1609: my $xml_help = '';
1610: my $initialize='';
1611: my $textarea_id = 'filecont';
1612: my ($dragmath_button,$deps_button);
1613: my ($add_to_onload, $add_to_onresize);
1614: $initialize=&Apache::lonhtmlcommon::spellheader();
1615: if (($filetype eq 'html') && (&Apache::lonhtmlcommon::htmlareabrowser())) {
1616: my $lang = &Apache::lonhtmlcommon::htmlarea_lang();
1617: my %textarea_args = (
1618: fullpage => 'true',
1619: dragmath => 'math',
1620: );
1621: $initialize .= &Apache::lonhtmlcommon::htmlareaselectactive(\%textarea_args);
1622: }
1623: $initialize .= (<<FULLPAGE);
1624: <script type="text/javascript">
1625: // <![CDATA[
1626: function initDocument() {
1627: resize_textarea('$textarea_id','LC_aftertextarea');
1628: }
1629: // ]]>
1630: </script>
1631: FULLPAGE
1632: if ($filetype eq 'html') {
1633: if ($symb || $folderpath) {
1634: $deps_button = &Apache::lonhtmlcommon::dependencies_button()."\n";
1635: $initialize .=
1636: &Apache::lonhtmlcommon::dependencycheck_js($symb,$itemtitle,
1637: undef,$folderpath,$uri)."\n";
1638: }
1639: $dragmath_button = '<span id="math_filecont">'.&Apache::lonhtmlcommon::dragmath_button('filecont',1).'</span>';
1640: $initialize .= "\n".&Apache::lonhtmlcommon::dragmath_js('EditMathPopup');
1641: }
1642: $add_to_onload = 'initDocument();';
1643: $add_to_onresize = "resize_textarea('$textarea_id','LC_aftertextarea');";
1644:
1645: if ($filetype eq 'html') {
1646: $xml_help=&Apache::loncommon::helpLatexCheatsheet();
1647: }
1648:
1649: my $titledisplay=&display_title();
1650: my $textareaclass;
1651: my %lt=&Apache::lonlocal::texthash('st' => 'Save and Edit',
1652: 'vi' => 'Save and View',
1653: 'dv' => 'Discard Edits and View',
1654: 'un' => 'undo',
1655: 'ed' => 'Edit');
1656: my $spelllink = &Apache::lonhtmlcommon::spelllink('xmledit','filecont');
1657: my $textarea_events = &Apache::edit::element_change_detection();
1658: my $form_events = &Apache::edit::form_change_detection();
1659: my $htmlerror;
1660: if ($filetype eq 'html') {
1661: $htmlerror=&verify_html($filecontents);
1662: if ($htmlerror) {
1663: $htmlerror='<span class="LC_error">'.$htmlerror.'</span>';
1664: }
1665: if (&Apache::lonhtmlcommon::htmlareabrowser()) {
1666: $textareaclass = 'class="LC_richDefaultOff"';
1667: }
1668: }
1669: my $editfooter=(<<ENDFOOTER);
1670: $initialize
1671: <a name="editsection" />
1672: <form $form_events method="post" name="xmledit">
1673: <div class="LC_edit_problem_editxml_header">
1674: <table class="LC_edit_problem_header_title"><tr><td>
1675: $filename
1676: </td><td align="right">
1677: $xml_help
1678: </td></tr>
1679: </table>
1680: <div class="LC_edit_problem_discards">
1681: <input type="submit" name="discardview" accesskey="d" value="$lt{'dv'}" />
1682: <input type="submit" name="Undo" accesskey="u" value="$lt{'un'}" />
1683: $htmlerror $deps_button $dragmath_button
1684: </div>
1685: <div class="LC_edit_problem_saves">
1686: <input type="submit" name="savethisfile" accesskey="s" value="$lt{'st'}" />
1687: <input type="submit" name="viewmode" accesskey="v" value="$lt{'vi'}" />
1688: </div>
1689: </div>
1690: <textarea $textarea_events style="width:100%" cols="80" rows="44" name="filecont" id="filecont" $textareaclass>$filecontents</textarea><br />$spelllink
1691: <div id="LC_aftertextarea">
1692: <br />
1693: $titledisplay
1694: </div>
1695: </form>
1696: </body>
1697: ENDFOOTER
1698: return ($editfooter,$add_to_onload,$add_to_onresize);;
1699: }
1700:
1701: sub get_target {
1702: my $viewgrades=&Apache::lonnet::allowed('vgr',$env{'request.course.id'});
1703: if ( $env{'request.state'} eq 'published') {
1704: if ( defined($env{'form.grade_target'})
1705: && ($viewgrades == 'F' )) {
1706: return ($env{'form.grade_target'});
1707: } elsif (defined($env{'form.grade_target'})) {
1708: if (($env{'form.grade_target'} eq 'web') ||
1709: ($env{'form.grade_target'} eq 'tex') ) {
1710: return $env{'form.grade_target'}
1711: } else {
1712: return 'web';
1713: }
1714: } else {
1715: return 'web';
1716: }
1717: } elsif ($env{'request.state'} eq 'construct') {
1718: if ( defined($env{'form.grade_target'})) {
1719: return ($env{'form.grade_target'});
1720: } else {
1721: return 'web';
1722: }
1723: } else {
1724: return 'web';
1725: }
1726: }
1727:
1728: sub handler {
1729: my $request=shift;
1730:
1731: my $target=&get_target();
1732: $Apache::lonxml::debug=$env{'user.debug'};
1733:
1734: &Apache::loncommon::content_type($request,'text/html');
1735: &Apache::loncommon::no_cache($request);
1736: if ($env{'request.state'} eq 'published') {
1737: $request->set_last_modified(&Apache::lonnet::metadata($request->uri,
1738: 'lastrevisiondate'));
1739: }
1740: # Embedded Flash movies from Camtasia served from https will not display in IE
1741: # if XML config file has expired from cache.
1742: if ($ENV{'SERVER_PORT'} == 443) {
1743: if ($request->uri =~ /\.xml$/) {
1744: my ($httpbrowser,$clientbrowser) =
1745: &Apache::loncommon::decode_user_agent($request);
1746: if ($clientbrowser =~ /^explorer$/i) {
1747: delete $request->headers_out->{'Cache-control'};
1748: delete $request->headers_out->{'Pragma'};
1749: my $expiration = time + 60;
1750: my $date=strftime("%a, %d %b %Y %H:%M:%S GMT",gmtime($expiration));
1751: $request->headers_out->set("Expires" => $date);
1752: }
1753: }
1754: }
1755: $request->send_http_header;
1756:
1757: return OK if $request->header_only;
1758:
1759:
1760: my $file=&Apache::lonnet::filelocation("",$request->uri);
1761: my ($filetype,$breadcrumbtext);
1762: if ($file =~ /\.(sty|css|js|txt|tex)$/) {
1763: $filetype=$1;
1764: } else {
1765: $filetype='html';
1766: }
1767: unless ($env{'request.uri'}) {
1768: $env{'request.uri'}=$request->uri;
1769: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
1770: ['todocs']);
1771: }
1772: if ($filetype eq 'sty') {
1773: $breadcrumbtext = 'Style File Editor';
1774: } elsif ($filetype eq 'js') {
1775: $breadcrumbtext = 'Javascript Editor';
1776: } elsif ($filetype eq 'css') {
1777: $breadcrumbtext = 'CSS Editor';
1778: } elsif ($filetype eq 'txt') {
1779: $breadcrumbtext = 'Text Editor';
1780: } elsif ($filetype eq 'tex') {
1781: $breadcrumbtext = 'TeX Editor';
1782: } else {
1783: $breadcrumbtext = 'HTML Editor';
1784: }
1785:
1786: #
1787: # Edit action? Save file.
1788: #
1789: if (!($env{'request.state'} eq 'published')) {
1790: if ($env{'form.savethisfile'} || $env{'form.viewmode'} || $env{'form.Undo'}) {
1791: my $html_file=&Apache::lonnet::getfile($file);
1792: my $error = &Apache::lonhomework::handle_save_or_undo($request, \$html_file, \$env{'form.filecont'});
1793: if ($env{'form.savethisfile'}) {
1794: $env{'form.editmode'}='Edit'; #force edit mode
1795: }
1796: }
1797: }
1798: my %mystyle;
1799: my $result = '';
1800: my $filecontents=&Apache::lonnet::getfile($file);
1801: if ($filecontents eq -1) {
1802: my $start_page=&Apache::loncommon::start_page('File Error');
1803: my $end_page=&Apache::loncommon::end_page();
1804: my $errormsg='<p class="LC_error">'
1805: .&mt('File not found: [_1]'
1806: ,'<span class="LC_filename">'.$file.'</span>')
1807: .'</p>';
1808: $result=(<<ENDNOTFOUND);
1809: $start_page
1810: $errormsg
1811: $end_page
1812: ENDNOTFOUND
1813: $filecontents='';
1814: if ($env{'request.state'} ne 'published') {
1815: if ($filetype eq 'sty') {
1816: $filecontents=&createnewsty();
1817: } elsif ($filetype eq 'js') {
1818: $filecontents=&createnewjs();
1819: } elsif ($filetype ne 'css' && $filetype ne 'txt' && $filetype ne 'tex') {
1820: $filecontents=&createnewhtml();
1821: }
1822: $env{'form.editmode'}='Edit'; #force edit mode
1823: }
1824: } else {
1825: unless ($env{'request.state'} eq 'published') {
1826: if ($filecontents=~/BEGIN LON-CAPA Internal/) {
1827: &Apache::lonxml::error(&mt('This file appears to be a rendering of a LON-CAPA resource. If this is correct, this resource will act very oddly and incorrectly.'));
1828: }
1829: #
1830: # we are in construction space, see if edit mode forced
1831: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
1832: ['editmode']);
1833: }
1834: if (!$env{'form.editmode'} || $env{'form.viewmode'} || $env{'form.discardview'}) {
1835: if ($filetype eq 'html' || $filetype eq 'sty') {
1836: &Apache::structuretags::reset_problem_globals();
1837: $result = &Apache::lonxml::xmlparse($request,$target,
1838: $filecontents,'',%mystyle);
1839: # .html files may contain <problem> or <Task> need to clean
1840: # up if it did
1841: &Apache::structuretags::reset_problem_globals();
1842: &Apache::lonhomework::finished_parsing();
1843: } elsif ($filetype eq 'tex') {
1844: $result = &Apache::lontexconvert::converted(\$filecontents,
1845: $env{'form.texengine'});
1846: if ($env{'form.return_only_error_and_warning_counts'}) {
1847: $result = "$errorcount:$warningcount";
1848: }
1849: } else {
1850: $result = $filecontents;
1851: }
1852: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
1853: ['rawmode']);
1854: if ($env{'form.rawmode'}) { $result = $filecontents; }
1855: if (($filetype ne 'html') &&
1856: (!$env{'form.return_only_error_and_warning_counts'})) {
1857: my $nochgview = 1;
1858: my $controls = '';
1859: if ($env{'request.state'} eq 'construct') {
1860: $controls = &Apache::loncommon::head_subbox(
1861: &Apache::loncommon::CSTR_pageheader()
1862: .&Apache::londefdef::edit_controls($nochgview));
1863: }
1864: if ($filetype ne 'sty' && $filetype ne 'tex') {
1865: $result =~ s/</</g;
1866: $result =~ s/>/>/g;
1867: $result = '<table class="LC_sty_begin">'.
1868: '<tr><td><b><pre>'.$result.
1869: '</pre></b></td></tr></table>';
1870: }
1871: my $brcrum;
1872: if ($env{'request.state'} eq 'construct') {
1873: $brcrum = [{'href' => &Apache::loncommon::authorspace($request->uri),
1874: 'text' => 'Construction Space'},
1875: {'href' => '',
1876: 'text' => $breadcrumbtext}];
1877: } else {
1878: $brcrum = ''; # FIXME: Where are we?
1879: }
1880: my %options = ('bread_crumbs' => $brcrum,
1881: 'bgcolor' => '#FFFFFF');
1882: $result =
1883: &Apache::loncommon::start_page(undef,undef,\%options)
1884: .$controls
1885: .$result
1886: .&Apache::loncommon::end_page();
1887: }
1888: }
1889: }
1890:
1891: #
1892: # Edit action? Insert editing commands
1893: #
1894: unless ($env{'request.state'} eq 'published') {
1895: if ($env{'form.editmode'} && (!($env{'form.viewmode'})) && (!($env{'form.discardview'})))
1896: {
1897: my ($displayfile,$url,$symb,$itemtitle);
1898: $displayfile=$request->uri;
1899: if ($request->uri =~ m{^/uploaded/}) {
1900: if ($env{'request.course.id'}) {
1901: my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
1902: my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
1903: if ($request->uri =~ m{^\Q/uploaded/$cdom/$cnum/\Esupplemental/}) {
1904: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
1905: ['folderpath','title']);
1906: }
1907: }
1908:
1909: ($symb,$itemtitle,$displayfile) =
1910: &get_courseupload_hierarchy($request->uri,
1911: $env{'form.folderpath'},$env{'form.title'});
1912: } else {
1913: $displayfile=~s/^\/[^\/]*//;
1914: }
1915:
1916: my ($edit_info, $add_to_onload, $add_to_onresize)=
1917: &inserteditinfo($filecontents,$filetype,$displayfile,$symb,
1918: $itemtitle,$env{'form.folderpath'},$request->uri);
1919:
1920: my %options =
1921: ('add_entries' =>
1922: {'onresize' => $add_to_onresize,
1923: 'onload' => $add_to_onload, });
1924: my $header;
1925: if ($env{'request.state'} eq 'construct') {
1926: $options{'bread_crumbs'} = [{
1927: 'href' => &Apache::loncommon::authorspace($request->uri),
1928: 'text' => 'Construction Space'},
1929: {'href' => '',
1930: 'text' => $breadcrumbtext}];
1931: $header = &Apache::loncommon::head_subbox(
1932: &Apache::loncommon::CSTR_pageheader());
1933: }
1934: my $js =
1935: &Apache::edit::js_change_detection().
1936: &Apache::loncommon::resize_textarea_js();
1937: my $start_page = &Apache::loncommon::start_page(undef,$js,
1938: \%options);
1939: $result = $start_page
1940: .$header
1941: .&Apache::lonxml::message_location()
1942: .$edit_info
1943: .&Apache::loncommon::end_page();
1944: }
1945: }
1946: if ($filetype eq 'html') { &writeallows($request->uri); }
1947:
1948: &Apache::lonxml::add_messages(\$result);
1949: $request->print($result);
1950:
1951: return OK;
1952: }
1953:
1954: sub display_title {
1955: my $result;
1956: if ($env{'request.state'} eq 'construct') {
1957: my $title=&Apache::lonnet::gettitle();
1958: if (!defined($title) || $title eq '') {
1959: $title = $env{'request.filename'};
1960: $title = substr($title, rindex($title, '/') + 1);
1961: }
1962: $result = "<script type='text/javascript'>top.document.title = '$title - LON-CAPA "
1963: .&mt('Construction Space')."';</script>";
1964: }
1965: return $result;
1966: }
1967:
1968: sub get_courseupload_hierarchy {
1969: my ($url,$folderpath,$title) = @_;
1970: my ($symb,$itemtitle,$displaypath);
1971: if ($env{'request.course.id'}) {
1972: if ($folderpath =~ /^supplemental/) {
1973: my @folders = split(/\&/,$folderpath);
1974: my @pathitems;
1975: while (@folders) {
1976: my $folder=shift(@folders);
1977: my $foldername=shift(@folders);
1978: $foldername =~ s/\:(\d*)\:(\w*)\:(\w*):(\d*)\:?(\d*)$//;
1979: push(@pathitems,&unescape($foldername));
1980: }
1981: if ($title) {
1982: push(@pathitems,&unescape($title));
1983: }
1984: $displaypath = join(' » ',@pathitems);
1985: } else {
1986: $symb = &Apache::lonnet::symbread($url);
1987: my ($map,$id,$res)=&Apache::lonnet::decode_symb($symb);
1988: my $navmap=Apache::lonnavmaps::navmap->new;
1989: if (ref($navmap)) {
1990: my $res = $navmap->getBySymb($symb);
1991: if (ref($res)) {
1992: my @pathitems =
1993: &Apache::loncommon::get_folder_hierarchy($navmap,$map,1);
1994: $itemtitle = $res->compTitle();
1995: push(@pathitems,$itemtitle);
1996: $displaypath = join(' » ',@pathitems);
1997: }
1998: }
1999: }
2000: }
2001: return ($symb,$itemtitle,$displaypath);
2002: }
2003:
2004: sub debug {
2005: if ($Apache::lonxml::debug eq "1") {
2006: $|=1;
2007: my $request=$Apache::lonxml::request;
2008: if (!$request) {
2009: eval { $request=Apache->request; };
2010: }
2011: if (!$request) {
2012: eval { $request=Apache2::RequestUtil->request; };
2013: }
2014: $request->print('<font size="-2"><pre>DEBUG:'.&HTML::Entities::encode($_[0],'<>&"')."</pre></font>\n");
2015: #&Apache::lonnet::logthis($_[0]);
2016: }
2017: }
2018:
2019: sub show_error_warn_msg {
2020: if (($env{'request.filename'} eq
2021: $Apache::lonnet::perlvar{'lonDocRoot'}.'/res/lib/templates/simpleproblem.problem') &&
2022: (&Apache::lonnet::allowed('mdc',$env{'request.course.id'}))) {
2023: return 1;
2024: }
2025: return (($Apache::lonxml::debug eq 1) ||
2026: ($env{'request.state'} eq 'construct') ||
2027: ($Apache::lonhomework::browse eq 'F'
2028: &&
2029: $env{'form.show_errors'} eq 'on'));
2030: }
2031:
2032: sub error {
2033: my @errors = @_;
2034:
2035: $errorcount++;
2036:
2037: $Apache::lonxml::internal_error=1;
2038:
2039: if (defined($Apache::inputtags::part)) {
2040: if ( @Apache::inputtags::response ) {
2041: push(@errors,
2042: &mt("This error occurred while processing response [_1] in part [_2]",
2043: $Apache::inputtags::response[-1],
2044: $Apache::inputtags::part));
2045: } else {
2046: push(@errors,
2047: &mt("This error occurred while processing part [_1]",
2048: $Apache::inputtags::part));
2049: }
2050: }
2051:
2052: if ( &show_error_warn_msg() ) {
2053: # If printing in construction space, put the error inside <pre></pre>
2054: push(@Apache::lonxml::error_messages,
2055: $Apache::lonxml::warnings_error_header
2056: .'<div class="LC_error">'
2057: .'<b>'.&mt('ERROR:').' </b>'.join("<br />\n",@errors)
2058: ."</div>\n");
2059: $Apache::lonxml::warnings_error_header='';
2060: } else {
2061: my $errormsg;
2062: my ($symb)=&Apache::lonnet::symbread();
2063: if ( !$symb ) {
2064: #public or browsers
2065: $errormsg=&mt("An error occurred while processing this resource. The author has been notified.");
2066: }
2067: my $host=$Apache::lonnet::perlvar{'lonHostID'};
2068: push(@errors,
2069: &mt("The error occurred on host [_1]",
2070: "<tt>$host</tt>"));
2071:
2072: my $msg = join('<br />', @errors);
2073:
2074: #notify author
2075: &Apache::lonmsg::author_res_msg($env{'request.filename'},$msg);
2076: #notify course
2077: if ( $symb && $env{'request.course.id'} ) {
2078: my $cnum=$env{'course.'.$env{'request.course.id'}.'.num'};
2079: my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
2080: my (undef,%users)=&Apache::lonmsg::decide_receiver(undef,0,1,1,1);
2081: my $declutter=&Apache::lonnet::declutter($env{'request.filename'});
2082: my $baseurl = &Apache::lonnet::clutter($declutter);
2083: my @userlist;
2084: foreach (keys %users) {
2085: my ($user,$domain) = split(/:/, $_);
2086: push(@userlist,"$user:$domain");
2087: my $key=$declutter.'_'.$user.'_'.$domain;
2088: my %lastnotified=&Apache::lonnet::get('nohist_xmlerrornotifications',
2089: [$key],
2090: $cdom,$cnum);
2091: my $now=time;
2092: if ($now-$lastnotified{$key}>86400) {
2093: my $title = &Apache::lonnet::gettitle($symb);
2094: my $sentmessage;
2095: &Apache::lonmsg::user_normal_msg($user,$domain,
2096: "Error [$title]",$msg,'',$baseurl,'','',
2097: \$sentmessage,$symb,$title,1);
2098: &Apache::lonnet::put('nohist_xmlerrornotifications',
2099: {$key => $now},
2100: $cdom,$cnum);
2101: }
2102: }
2103: if ($env{'request.role.adv'}) {
2104: $errormsg=&mt("An error occurred while processing this resource. The course personnel ([_1]) and the author have been notified.",join(', ',@userlist));
2105: } else {
2106: $errormsg=&mt("An error occurred while processing this resource. The instructor has been notified.");
2107: }
2108: }
2109: push(@Apache::lonxml::error_messages,"<span class=\"LC_warning\">$errormsg</span><br />");
2110: }
2111: }
2112:
2113: sub warning {
2114: $warningcount++;
2115:
2116: if ($env{'form.grade_target'} ne 'tex') {
2117: if ( &show_error_warn_msg() ) {
2118: push(@Apache::lonxml::warning_messages,
2119: $Apache::lonxml::warnings_error_header
2120: .'<div class="LC_warning">'
2121: .&mt('[_1]W[_2]ARNING','<b>','</b>')."<b>:</b> ".join('<br />',@_)
2122: ."</div>\n"
2123: );
2124: $Apache::lonxml::warnings_error_header='';
2125: }
2126: }
2127: }
2128:
2129: sub info {
2130: if ($env{'form.grade_target'} ne 'tex'
2131: && $env{'request.state'} eq 'construct') {
2132: push(@Apache::lonxml::info_messages,join('<br />',@_)."<br />\n");
2133: }
2134: }
2135:
2136: sub message_location {
2137: return '__LONCAPA_INTERNAL_MESSAGE_LOCATION__';
2138: }
2139:
2140: sub add_messages {
2141: my ($msg)=@_;
2142: my $result=join(' ',
2143: @Apache::lonxml::info_messages,
2144: @Apache::lonxml::error_messages,
2145: @Apache::lonxml::warning_messages);
2146: undef(@Apache::lonxml::info_messages);
2147: undef(@Apache::lonxml::error_messages);
2148: undef(@Apache::lonxml::warning_messages);
2149: $$msg=~s/__LONCAPA_INTERNAL_MESSAGE_LOCATION__/$result/;
2150: $$msg=~s/__LONCAPA_INTERNAL_MESSAGE_LOCATION__//g;
2151: }
2152:
2153: sub get_param {
2154: my ($param,$parstack,$safeeval,$context,$case_insensitive, $noelide) = @_;
2155: if ( ! $context ) { $context = -1; }
2156: my $args ='';
2157: if ( $#$parstack > (-2-$context) ) { $args=$$parstack[$context]; }
2158: if ( ! $Apache::lonxml::usestyle ) {
2159: $args=$Apache::lonxml::style_values.$args;
2160: }
2161:
2162: if ($noelide) {
2163: $args =~ s/'\$/'\\\$/g;
2164: }
2165:
2166: if ( ! $args ) { return undef; }
2167: if ( $case_insensitive ) {
2168: if ($args =~ s/(my (?:.*))(\$\Q$param\E[,\)])/$1.lc($2)/ei) {
2169: return &Apache::run::run("{$args;".'return $'.$param.'}',
2170: $safeeval); #'
2171: } else {
2172: return undef;
2173: }
2174: } else {
2175: if ( $args =~ /my .*\$\Q$param\E[,\)]/ ) {
2176: return &Apache::run::run("{$args;".'return $'.$param.'}',
2177: $safeeval); #'
2178: } else {
2179: return undef;
2180: }
2181: }
2182: }
2183:
2184: sub get_param_var {
2185: my ($param,$parstack,$safeeval,$context,$case_insensitive) = @_;
2186: if ( ! $context ) { $context = -1; }
2187: my $args ='';
2188: if ( $#$parstack > (-2-$context) ) { $args=$$parstack[$context]; }
2189: if ( ! $Apache::lonxml::usestyle ) {
2190: $args=$Apache::lonxml::style_values.$args;
2191: }
2192: &Apache::lonxml::debug("Args are $args param is $param");
2193: if ($case_insensitive) {
2194: if (! ($args=~s/(my (?:.*))(\$\Q$param\E[,\)])/$1.lc($2)/ei)) {
2195: return undef;
2196: }
2197: } elsif ( $args !~ /my .*\$\Q$param\E[,\)]/ ) { return undef; }
2198: my $value=&Apache::run::run("{$args;".'return $'.$param.'}',$safeeval); #'
2199: &Apache::lonxml::debug("first run is $value");
2200: if ($value =~ /^[\$\@\%][a-zA-Z_]\w*$/) {
2201: &Apache::lonxml::debug("doing second");
2202: my @result=&Apache::run::run("return $value",$safeeval,1);
2203: if (!defined($result[0])) {
2204: return $value
2205: } else {
2206: if (wantarray) { return @result; } else { return $result[0]; }
2207: }
2208: } else {
2209: return $value;
2210: }
2211: }
2212:
2213: sub register_insert_xml {
2214: my $parser = HTML::LCParser->new($Apache::lonnet::perlvar{'lonTabDir'}
2215: .'/insertlist.xml');
2216: my ($tagnum,$in_help)=(0,0);
2217: my @alltags;
2218: my $tag;
2219: while (my $token = $parser->get_token()) {
2220: if ($token->[0] eq 'S') {
2221: my $key;
2222: if ($token->[1] eq 'tag') {
2223: $tag = $token->[2]{'name'};
2224: if (defined($tag)) {
2225: $insertlist{$tagnum.'.tag'} = $tag;
2226: $insertlist{$tag.'.num'} = $tagnum;
2227: push(@alltags,$tag);
2228: }
2229: } elsif ($in_help && $token->[1] eq 'file') {
2230: $key = $tag.'.helpfile';
2231: } elsif ($in_help && $token->[1] eq 'description') {
2232: $key = $tag.'.helpdesc';
2233: } elsif ($token->[1] eq 'description' ||
2234: $token->[1] eq 'color' ||
2235: $token->[1] eq 'show' ) {
2236: $key = $tag.'.'.$token->[1];
2237: } elsif ($token->[1] eq 'insert_sub') {
2238: $key = $tag.'.function';
2239: } elsif ($token->[1] eq 'help') {
2240: $in_help=1;
2241: } elsif ($token->[1] eq 'allow') {
2242: $key = $tag.'.allow';
2243: }
2244: if (defined($key)) {
2245: $insertlist{$key} = $parser->get_text();
2246: $insertlist{$key} =~ s/(^\s*|\s*$ )//gx;
2247: }
2248: } elsif ($token->[0] eq 'E') {
2249: if ($token->[1] eq 'tag') {
2250: undef($tag);
2251: $tagnum++;
2252: } elsif ($token->[1] eq 'help') {
2253: undef($in_help);
2254: }
2255: }
2256: }
2257:
2258: # parse the allows and ignore tags set to <show>no</show>
2259: foreach my $tag (@alltags) {
2260: next if (!exists($insertlist{$tag.'.allow'}));
2261: my $allow = $insertlist{$tag.'.allow'};
2262: foreach my $element (split(',',$allow)) {
2263: $element =~ s/(^\s*|\s*$ )//gx;
2264: if (!exists($insertlist{$element.'.show'})
2265: || $insertlist{$element.'.show'} ne 'no') {
2266: push(@{ $insertlist{$tag.'.which'} },$element);
2267: }
2268: }
2269: }
2270: }
2271:
2272: sub register_insert {
2273: return ®ister_insert_xml(@_);
2274: # &dump_insertlist('2');
2275: }
2276:
2277: sub dump_insertlist {
2278: my ($ext) = @_;
2279: open(XML,">/tmp/insertlist.xml.$ext");
2280: print XML ("<insertlist>");
2281: my $i=0;
2282:
2283: while (exists($insertlist{"$i.tag"})) {
2284: my $tag = $insertlist{"$i.tag"};
2285: print XML ("
2286: \t<tag name=\"$tag\">");
2287: if (defined($insertlist{"$tag.description"})) {
2288: print XML ("
2289: \t\t<description>".$insertlist{"$tag.description"}."</description>");
2290: }
2291: if (defined($insertlist{"$tag.color"})) {
2292: print XML ("
2293: \t\t<color>".$insertlist{"$tag.color"}."</color>");
2294: }
2295: if (defined($insertlist{"$tag.function"})) {
2296: print XML ("
2297: \t\t<insert_sub>".$insertlist{"$tag.function"}."</insert_sub>");
2298: }
2299: if (defined($insertlist{"$tag.show"})
2300: && $insertlist{"$tag.show"} ne 'yes') {
2301: print XML ("
2302: \t\t<show>".$insertlist{"$tag.show"}."</show>");
2303: }
2304: if (defined($insertlist{"$tag.helpfile"})) {
2305: print XML ("
2306: \t\t<help>
2307: \t\t\t<file>".$insertlist{"$tag.helpfile"}."</file>");
2308: if ($insertlist{"$tag.helpdesc"} ne '') {
2309: print XML ("
2310: \t\t\t<description>".$insertlist{"$tag.helpdesc"}."</description>");
2311: }
2312: print XML ("
2313: \t\t</help>");
2314: }
2315: if (defined($insertlist{"$tag.which"})) {
2316: print XML ("
2317: \t\t<allow>".join(',',sort(@{ $insertlist{"$tag.which"} }))."</allow>");
2318: }
2319: print XML ("
2320: \t</tag>");
2321: $i++;
2322: }
2323: print XML ("\n</insertlist>\n");
2324: close(XML);
2325: }
2326:
2327: sub description {
2328: my ($token)=@_;
2329: my $tag = &get_tag($token);
2330: return $insertlist{$tag.'.description'};
2331: }
2332:
2333: # Returns a list containing the help file, and the description
2334: sub helpinfo {
2335: my ($token)=@_;
2336: my $tag = &get_tag($token);
2337: return ($insertlist{$tag.'.helpfile'}, $insertlist{$tag.'.helpdesc'});
2338: }
2339:
2340: sub get_tag {
2341: my ($token)=@_;
2342: my $tagnum;
2343: my $tag=$token->[1];
2344: foreach my $namespace (reverse(@Apache::lonxml::namespace)) {
2345: my $testtag = $namespace.'::'.$tag;
2346: $tagnum = $insertlist{"$testtag.num"};
2347: last if (defined($tagnum));
2348: }
2349: if (!defined($tagnum)) {
2350: $tagnum = $Apache::lonxml::insertlist{"$tag.num"};
2351: }
2352: return $insertlist{"$tagnum.tag"};
2353: }
2354:
2355: ############################################################
2356: # PDF-FORM-METHODS
2357:
2358: =pod
2359:
2360: =item &print_pdf_radiobutton(fieldname, value)
2361:
2362: Returns a latexline to generate a PDF-Form-Radiobutton.
2363: Note: Radiobuttons with equal names are automaticly grouped
2364: in a selection-group.
2365:
2366: $fieldname: PDF internalname of the radiobutton(group)
2367: $value: Value of radiobutton
2368:
2369: =cut
2370: sub print_pdf_radiobutton {
2371: my ($fieldname, $value) = @_;
2372: return '\radioButton[\symbolchoice{circle}]{'
2373: .$fieldname.'}{10bp}{10bp}{'.$value.'}';
2374: }
2375:
2376:
2377: =pod
2378:
2379: =item &print_pdf_start_combobox(fieldname)
2380:
2381: Starts a latexline to generate a PDF-Form-Combobox with text.
2382:
2383: $fieldname: PDF internal name of the Combobox
2384:
2385: =cut
2386: sub print_pdf_start_combobox {
2387: my $result;
2388: my ($fieldName) = @_;
2389: $result .= '\begin{tabularx}{\textwidth}{p{2.5cm}X}'."\n";
2390: $result .= '\comboBox[]{'.$fieldName.'}{2.3cm}{14bp}{'; #
2391:
2392: return $result;
2393: }
2394:
2395:
2396: =pod
2397:
2398: =item &print_pdf_add_combobox_option(options)
2399:
2400: Generates a latexline to add Options to a PDF-Form-ComboBox.
2401:
2402: $option: PDF internal name of the Combobox-Option
2403:
2404: =cut
2405: sub print_pdf_add_combobox_option {
2406:
2407: my $result;
2408: my ($option) = @_;
2409:
2410: $result .= '('.$option.')';
2411:
2412: return $result;
2413: }
2414:
2415:
2416: =pod
2417:
2418: =item &print_pdf_end_combobox(text) {
2419:
2420: Returns latexcode to end a PDF-Form-Combobox with text.
2421:
2422: =cut
2423: sub print_pdf_end_combobox {
2424: my $result;
2425: my ($text) = @_;
2426:
2427: $result .= '}&'.$text."\\\\\n";
2428: $result .= '\end{tabularx}' . "\n";
2429: $result .= '\hspace{2mm}' . "\n";
2430: return $result;
2431: }
2432:
2433:
2434: =pod
2435:
2436: =item &print_pdf_hiddenField(fieldname, user, domain)
2437:
2438: Returns a latexline to generate a PDF-Form-hiddenField with userdata.
2439:
2440: $fieldname label for hiddentextfield
2441: $user: name of user
2442: $domain: domain of user
2443:
2444: =cut
2445: sub print_pdf_hiddenfield {
2446: my $result;
2447: my ($fieldname, $user, $domain) = @_;
2448:
2449: $result .= '\textField [\F{\FHidden}\F{-\FPrint}\V{'.$domain.'&'.$user.'}]{'.$fieldname.'}{0in}{0in}'."\n";
2450:
2451: return $result;
2452: }
2453:
2454: 1;
2455: __END__
2456:
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