1: # The LearningOnline Network with CAPA
2: # XML Parser Module
3: #
4: # $Id: lonxml.pm,v 1.556 2016/08/09 23:43:39 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 edit 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 printalltags {
232: foreach my $temp (sort(keys(%Apache::lonxml::alltags))) {
233: &Apache::lonxml::debug("$temp -- ".
234: join(',',@{ $Apache::lonxml::alltags{$temp} }));
235: }
236: }
237:
238: sub xmlparse {
239: my ($request,$target,$content_file_string,$safeinit,%style_for_target) = @_;
240:
241: &setup_globals($request,$target);
242: &Apache::inputtags::initialize_inputtags();
243: &Apache::bridgetask::initialize_bridgetask();
244: &Apache::outputtags::initialize_outputtags();
245: &Apache::edit::initialize_edit();
246: &Apache::londefdef::initialize_londefdef();
247:
248: #
249: # do we have a course style file?
250: #
251:
252: if ($env{'request.course.id'} && $env{'request.state'} ne 'construct') {
253: my $bodytext=
254: $env{'course.'.$env{'request.course.id'}.'.default_xml_style'};
255: if ($bodytext) {
256: foreach my $file (split(',',$bodytext)) {
257: my $location=&Apache::lonnet::filelocation('',$file);
258: my $styletext=&Apache::lonnet::getfile($location);
259: if ($styletext ne '-1') {
260: %style_for_target = (%style_for_target,
261: &Apache::style::styleparser($target,$styletext));
262: }
263: }
264: }
265: } elsif ($env{'construct.style'}
266: && ($env{'request.state'} eq 'construct')) {
267: my $location=&Apache::lonnet::filelocation('',$env{'construct.style'});
268: my $styletext=&Apache::lonnet::getfile($location);
269: if ($styletext ne '-1') {
270: %style_for_target = (%style_for_target,
271: &Apache::style::styleparser($target,$styletext));
272: }
273: }
274: #&printalltags();
275: my @pars = ();
276: my $pwd=$env{'request.filename'};
277: $pwd =~ s:/[^/]*$::;
278: &newparser(\@pars,\$content_file_string,$pwd);
279:
280: my $safeeval = new Safe;
281: my $safehole = new Safe::Hole;
282: &init_safespace($target,$safeeval,$safehole,$safeinit);
283: #-------------------- Redefinition of the target in the case of compound target
284:
285: ($target, my @tenta) = split('&&',$target);
286:
287: my @stack = ();
288: my @parstack = ();
289: &initdepth();
290: &init_alarm();
291: my $finaloutput = &inner_xmlparse($target,\@stack,\@parstack,\@pars,
292: $safeeval,\%style_for_target,1);
293:
294: if (@stack) {
295: &warning(&mt('At end of file some tags were still left unclosed:').
296: ' <tt><'.join('></tt>, <tt><',reverse(@stack)).
297: '></tt>');
298: }
299: if ($env{'request.uri'}) {
300: &writeallows($env{'request.uri'});
301: }
302: &do_registered_ssi();
303: if ($Apache::lonxml::counter_changed) { &store_counter() }
304:
305: &clean_safespace($safeeval);
306:
307: if (@script_var_displays) {
308: if ($finaloutput =~ m{</body>\s*</html>\s*$}s) {
309: my $scriptoutput = join('',@script_var_displays);
310: $finaloutput=~s{(</body>\s*</html>)\s*$}{$scriptoutput$1}s;
311: } else {
312: $finaloutput .= join('',@script_var_displays);
313: }
314: undef(@script_var_displays);
315: }
316: &init_state();
317: if ($env{'form.return_only_error_and_warning_counts'}) {
318: if ($env{'request.filename'}=~/\.(html|htm|xml)$/i) {
319: my $error=&verify_html($content_file_string);
320: if ($error) { $errorcount++; }
321: }
322: return "$errorcount:$warningcount";
323: }
324: return $finaloutput;
325: }
326:
327: sub latex_special_symbols {
328: my ($string,$where)=@_;
329: #
330: # If e.g. in verbatim mode, then don't substitute.
331: # but return original string.
332: #
333: if (!($Apache::lonxml::substitute_LaTeX_symbols)) {
334: return $string;
335: }
336: if ($where eq 'header') {
337: $string =~ s/\\/\$\\backslash\$/g; # \ -> $\backslash$ per LaTex line by line pg 10.
338: $string =~ s/(\$|%|\{|\})/\\$1/g;
339: $string=&Apache::lonprintout::character_chart($string);
340: # any & or # leftover should be safe to just escape
341: $string=~s/([^\\])\&/$1\\\&/g;
342: $string=~s/([^\\])\#/$1\\\#/g;
343: $string =~ s/_/\\_/g; # _ -> \_
344: $string =~ s/\^/\\\^{}/g; # ^ -> \^{}
345: } else {
346: $string=~s/\\/\\ensuremath{\\backslash}/g;
347: $string=~s/\\\%|\%/\\\%/g;
348: $string=~s/\\\{|\{/\\{/g;
349: $string=~s/\\}|}/\\}/g;
350: $string=~s/\\ensuremath\\\{\\backslash\\}/\\ensuremath{\\backslash}/g;
351: $string=~s/\\\$|\$/\\\$/g;
352: $string=~s/\\\_|\_/\\\_/g;
353: $string=~s/([^\\]|^)(\~|\^)/$1\\$2\\strut /g;
354: $string=~s/(>|<)/\\ensuremath\{$1\}/g; #more or less
355: $string=&Apache::lonprintout::character_chart($string);
356: # any & or # leftover should be safe to just escape
357: $string=~s/\\\&|\&/\\\&/g;
358: $string=~s/\\\#|\#/\\\#/g;
359: $string=~s/\|/\$\\mid\$/g;
360: #single { or } How to escape?
361: }
362: return $string;
363: }
364:
365: sub inner_xmlparse {
366: my ($target,$stack,$parstack,$pars,$safeeval,$style_for_target,$start)=@_;
367: my $finaloutput = '';
368: my $result;
369: my $token;
370: my $dontpop=0;
371: my $lastdontpop;
372: my $lastendtag;
373: my $startredirection = $Apache::lonxml::redirection;
374: while ( $#$pars > -1 ) {
375: while ($token = $$pars['-1']->get_token) {
376: if (($token->[0] eq 'T') || ($token->[0] eq 'C') ) {
377: if ($metamode<1) {
378: my $text=$token->[1];
379: if ($token->[0] eq 'C' && $target eq 'tex') {
380: $text = '';
381: # $text = '%'.$text."\n";
382: }
383: $result.=$text;
384: }
385: } elsif (($token->[0] eq 'D')) {
386: if ($metamode<1 && $target eq 'web') {
387: my $text=$token->[1];
388: $result.=$text;
389: }
390: } elsif ($token->[0] eq 'PI') {
391: if ($metamode<1 && $target eq 'web') {
392: $result=$token->[2];
393: }
394: } elsif ($token->[0] eq 'S') {
395: # add tag to stack
396: push (@$stack,$token->[1]);
397: # add parameters list to another stack
398: push (@$parstack,&parstring($token));
399: &increasedepth($token);
400: if ($Apache::lonxml::usestyle &&
401: exists($$style_for_target{$token->[1]})) {
402: $Apache::lonxml::usestyle=0;
403: my $string=$$style_for_target{$token->[1]}.
404: '<LONCAPA_INTERNAL_TURN_STYLE_ON />';
405: &Apache::lonxml::newparser($pars,\$string);
406: $Apache::lonxml::style_values=$$parstack[-1];
407: $Apache::lonxml::style_end_values=$$parstack[-1];
408: } else {
409: $result = &callsub("start_$token->[1]", $target, $token, $stack,
410: $parstack, $pars, $safeeval, $style_for_target);
411: }
412: } elsif ($token->[0] eq 'E') {
413: if ($Apache::lonxml::usestyle &&
414: exists($$style_for_target{'/'."$token->[1]"})) {
415: $Apache::lonxml::usestyle=0;
416: my $string=$$style_for_target{'/'.$token->[1]}.
417: '<LONCAPA_INTERNAL_TURN_STYLE_ON end="'.$token->[1].'" />';
418: &Apache::lonxml::newparser($pars,\$string);
419: $Apache::lonxml::style_values=$Apache::lonxml::style_end_values;
420: $Apache::lonxml::style_end_values='';
421: $dontpop=1;
422: } else {
423: #clear out any tags that didn't end
424: while ($token->[1] ne $$stack['-1'] && ($#$stack > -1)) {
425: my $lasttag=$$stack[-1];
426: if ($token->[1] =~ /^\Q$lasttag\E$/i) {
427: &Apache::lonxml::warning(&mt('Using tag [_1] on line [_2] as end tag to [_3]','</'.$token->[1].'>','.$token->[3].','<'.$$stack[-1].'>'));
428: last;
429: } else {
430: &Apache::lonxml::warning(&mt('Found tag [_1] on line [_2] when looking for [_3] in file.','</'.$token->[1].'>',$token->[3],'</'.$$stack[-1].'>'));
431: &end_tag($stack,$parstack,$token);
432: }
433: }
434: $result = &callsub("end_$token->[1]", $target, $token, $stack,
435: $parstack, $pars,$safeeval, $style_for_target);
436: }
437: } else {
438: &Apache::lonxml::error("Unknown token event :$token->[0]:$token->[1]:");
439: }
440: #evaluate variable refs in result
441: if ($Apache::lonxml::post_evaluate &&$result ne "") {
442: my $extras;
443: if (!$Apache::lonxml::usestyle) {
444: $extras=$Apache::lonxml::style_values;
445: }
446: if ( $#$parstack > -1 ) {
447: $result=&Apache::run::evaluate($result,$safeeval,$extras.$$parstack[-1]);
448: } else {
449: $result= &Apache::run::evaluate($result,$safeeval,$extras);
450: }
451: }
452: $Apache::lonxml::post_evaluate=1;
453:
454: if (($token->[0] eq 'T') || ($token->[0] eq 'C') || ($token->[0] eq 'D') ) {
455: #Style file definitions should be correct
456: if ($target eq 'tex' && ($Apache::lonxml::usestyle)) {
457: $result=&latex_special_symbols($result);
458: }
459: }
460:
461: if ($Apache::lonxml::redirection) {
462: $Apache::lonxml::outputstack['-1'] .= $result;
463: } else {
464: $finaloutput.=$result;
465: }
466: $result = '';
467:
468: if ($token->[0] eq 'E') {
469: if ($dontpop) {
470: $lastdontpop = $token;
471: } else {
472: $lastendtag = $token->[1];
473: &end_tag($stack,$parstack,$token);
474: }
475: }
476: $dontpop=0;
477: }
478: if ($#$pars > -1) {
479: pop @$pars;
480: pop @Apache::lonxml::pwd;
481: }
482: }
483:
484: if (($#$stack == 0) && ($stack->[0] eq 'physnet') && ($target eq 'web') &&
485: ($lastendtag eq 'LONCAPA_INTERNAL_TURN_STYLE_ON')) {
486: if ((ref($lastdontpop) eq 'ARRAY') && ($lastdontpop->[1] eq 'physnet')) {
487: &end_tag($stack,$parstack,$lastdontpop);
488: }
489: }
490:
491: # if ($target eq 'meta') {
492: # $finaloutput.=&endredirection;
493: # }
494:
495: if ( $start && $target eq 'grade') { &endredirection(); }
496: if ( $Apache::lonxml::redirection > $startredirection) {
497: while ($Apache::lonxml::redirection > $startredirection) {
498: $finaloutput .= &endredirection();
499: }
500: }
501: if (($ENV{'QUERY_STRING'}) && ($target eq 'web')) {
502: $finaloutput=&afterburn($finaloutput);
503: }
504: if ($target eq 'modified') {
505: # if modfied, handle startpart and endpart
506: $finaloutput=~s/\<startpartmarker[^\>]*\>(.*)\<endpartmarker[^\>]*\>/<part>$1<\/part>/gs;
507: }
508: return $finaloutput;
509: }
510:
511: ##
512: ## Looks to see if there is a subroutine defined for this tag. If so, call it,
513: ## otherwise do not call it as we do not know what it is.
514: ##
515: sub callsub {
516: my ($sub,$target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
517: my $currentstring='';
518: my $nodefault;
519: {
520: my $sub1;
521: no strict 'refs';
522: my $tag=$token->[1];
523: # get utterly rid of extended html tags
524: if ($tag=~/^x\-/i) { return ''; }
525: my $space=$Apache::lonxml::alltags{$tag}[-1];
526: if (!$space) {
527: $tag=~tr/A-Z/a-z/;
528: $sub=~tr/A-Z/a-z/;
529: $space=$Apache::lonxml::alltags{$tag}[-1]
530: }
531:
532: my $deleted=0;
533: if (($token->[0] eq 'S') && ($target eq 'modified')) {
534: $deleted=&Apache::edit::handle_delete($space,$target,$token,$tagstack,
535: $parstack,$parser,$safeeval,
536: $style);
537: }
538: if (!$deleted) {
539: if ($space) {
540: #&Apache::lonxml::debug("Calling sub $sub in $space $metamode");
541: $sub1="$space\:\:$sub";
542: ($currentstring,$nodefault) = &$sub1($target,$token,$tagstack,
543: $parstack,$parser,$safeeval,
544: $style);
545: } else {
546: if ($target eq 'tex') {
547: # throw away tag name
548: return '';
549: }
550: #&Apache::lonxml::debug("NOT Calling sub $sub in $space $metamode");
551: if ($metamode <1) {
552: if (defined($token->[4]) && ($metamode < 1)) {
553: $currentstring = $token->[4];
554: } else {
555: $currentstring = $token->[2];
556: }
557: }
558: }
559: # &Apache::lonxml::debug("nodefalt:$nodefault:");
560: if ($currentstring eq '' && $nodefault eq '') {
561: if ($target eq 'edit') {
562: #&Apache::lonxml::debug("doing default edit for $token->[1]");
563: if ($token->[0] eq 'S') {
564: $currentstring = &Apache::edit::tag_start($target,$token);
565: } elsif ($token->[0] eq 'E') {
566: $currentstring = &Apache::edit::tag_end($target,$token);
567: }
568: }
569: }
570: if ($target eq 'modified' && $nodefault eq '') {
571: if ($currentstring eq '') {
572: if ($token->[0] eq 'S') {
573: $currentstring = $token->[4];
574: } elsif ($token->[0] eq 'E') {
575: $currentstring = $token->[2];
576: } else {
577: $currentstring = $token->[2];
578: }
579: }
580: if ($token->[0] eq 'S') {
581: $currentstring.=&Apache::edit::handle_insert();
582: } elsif ($token->[0] eq 'E') {
583: $currentstring.=&Apache::edit::handle_insertafter($token->[1]);
584: }
585: }
586: }
587: use strict 'refs';
588: }
589: return $currentstring;
590: }
591:
592: {
593: my %state;
594:
595: sub init_state {
596: undef(%state);
597: }
598:
599: sub set_state {
600: my ($key,$value) = @_;
601: $state{$key} = $value;
602: return $value;
603: }
604: sub get_state {
605: my ($key) = @_;
606: return $state{$key};
607: }
608: }
609:
610: sub setup_globals {
611: my ($request,$target)=@_;
612: $Apache::lonxml::request=$request;
613: $errorcount=0;
614: $warningcount=0;
615: $Apache::lonxml::internal_error=0;
616: $Apache::lonxml::default_homework_loaded=0;
617: $Apache::lonxml::usestyle=1;
618: &init_counter();
619: &clear_bubble_lines_for_part();
620: &init_state();
621: &set_state('target',$target);
622: @Apache::lonxml::pwd=();
623: @Apache::lonxml::extlinks=();
624: @script_var_displays=();
625: @Apache::lonxml::ssi_info=();
626: $Apache::lonxml::post_evaluate=1;
627: $Apache::lonxml::warnings_error_header='';
628: $Apache::lonxml::substitute_LaTeX_symbols = 1;
629: if ($target eq 'meta') {
630: $Apache::lonxml::redirection = 0;
631: $Apache::lonxml::metamode = 1;
632: $Apache::lonxml::evaluate = 1;
633: $Apache::lonxml::import = 0;
634: } elsif ($target eq 'answer') {
635: $Apache::lonxml::redirection = 0;
636: $Apache::lonxml::metamode = 1;
637: $Apache::lonxml::evaluate = 1;
638: $Apache::lonxml::import = 1;
639: } elsif ($target eq 'grade') {
640: &startredirection(); #ended in inner_xmlparse on exit
641: $Apache::lonxml::metamode = 0;
642: $Apache::lonxml::evaluate = 1;
643: $Apache::lonxml::import = 1;
644: } elsif ($target eq 'modified') {
645: $Apache::lonxml::redirection = 0;
646: $Apache::lonxml::metamode = 0;
647: $Apache::lonxml::evaluate = 0;
648: $Apache::lonxml::import = 0;
649: } elsif ($target eq 'edit') {
650: $Apache::lonxml::redirection = 0;
651: $Apache::lonxml::metamode = 0;
652: $Apache::lonxml::evaluate = 0;
653: $Apache::lonxml::import = 0;
654: } elsif ($target eq 'analyze') {
655: $Apache::lonxml::redirection = 0;
656: $Apache::lonxml::metamode = 0;
657: $Apache::lonxml::evaluate = 1;
658: $Apache::lonxml::import = 1;
659: } else {
660: $Apache::lonxml::redirection = 0;
661: $Apache::lonxml::metamode = 0;
662: $Apache::lonxml::evaluate = 1;
663: $Apache::lonxml::import = 1;
664: }
665: }
666:
667: sub init_safespace {
668: my ($target,$safeeval,$safehole,$safeinit) = @_;
669: $safeeval->reval('use LaTeX::Table;');
670: $safeeval->deny_only(':dangerous');
671: $safeeval->reval('use LONCAPA::LCMathComplex;');
672: $safeeval->permit_only(":default");
673: $safeeval->permit("entereval");
674: $safeeval->permit(":base_math");
675: $safeeval->permit("sort");
676: $safeeval->permit("time");
677: $safeeval->permit("caller");
678: $safeeval->deny("rand");
679: $safeeval->deny("srand");
680: $safeeval->deny(":base_io");
681: $safehole->wrap(\&Apache::scripttag::xmlparse,$safeeval,'&xmlparse');
682: $safehole->wrap(\&Apache::outputtags::multipart,$safeeval,'&multipart');
683: $safehole->wrap(\&Apache::lonnet::EXT,$safeeval,'&EXT');
684: $safehole->wrap(\&Apache::chemresponse::chem_standard_order,$safeeval,
685: '&chem_standard_order');
686: $safehole->wrap(\&Apache::response::check_status,$safeeval,'&check_status');
687: $safehole->wrap(\&Apache::response::implicit_multiplication,$safeeval,'&implicit_multiplication');
688:
689: $safehole->wrap(\&Apache::lonmaxima::maxima_eval,$safeeval,'&maxima_eval');
690: $safehole->wrap(\&Apache::lonmaxima::maxima_check,$safeeval,'&maxima_check');
691: $safehole->wrap(\&Apache::lonmaxima::maxima_cas_formula_fix,$safeeval,
692: '&maxima_cas_formula_fix');
693:
694: $safehole->wrap(\&Apache::lonr::r_eval,$safeeval,'&r_eval');
695: $safehole->wrap(\&Apache::lonr::Rentry,$safeeval,'&Rentry');
696: $safehole->wrap(\&Apache::lonr::Rarray,$safeeval,'&Rarray');
697: $safehole->wrap(\&Apache::lonr::r_check,$safeeval,'&r_check');
698: $safehole->wrap(\&Apache::lonr::r_cas_formula_fix,$safeeval,
699: '&r_cas_formula_fix');
700:
701: $safehole->wrap(\&Apache::caparesponse::capa_formula_fix,$safeeval,
702: '&capa_formula_fix');
703:
704: $safehole->wrap(\&Apache::lonlocal::locallocaltime,$safeeval,
705: '&locallocaltime');
706:
707: $safehole->wrap(\&Math::Cephes::asin,$safeeval,'&asin');
708: $safehole->wrap(\&Math::Cephes::acos,$safeeval,'&acos');
709: $safehole->wrap(\&Math::Cephes::atan,$safeeval,'&atan');
710: $safehole->wrap(\&Math::Cephes::sinh,$safeeval,'&sinh');
711: $safehole->wrap(\&Math::Cephes::cosh,$safeeval,'&cosh');
712: $safehole->wrap(\&Math::Cephes::tanh,$safeeval,'&tanh');
713: $safehole->wrap(\&Math::Cephes::asinh,$safeeval,'&asinh');
714: $safehole->wrap(\&Math::Cephes::acosh,$safeeval,'&acosh');
715: $safehole->wrap(\&Math::Cephes::atanh,$safeeval,'&atanh');
716: $safehole->wrap(\&Math::Cephes::erf,$safeeval,'&erf');
717: $safehole->wrap(\&Math::Cephes::erfc,$safeeval,'&erfc');
718: $safehole->wrap(\&Math::Cephes::j0,$safeeval,'&j0');
719: $safehole->wrap(\&Math::Cephes::j1,$safeeval,'&j1');
720: $safehole->wrap(\&Math::Cephes::jn,$safeeval,'&jn');
721: $safehole->wrap(\&Math::Cephes::jv,$safeeval,'&jv');
722: $safehole->wrap(\&Math::Cephes::y0,$safeeval,'&y0');
723: $safehole->wrap(\&Math::Cephes::y1,$safeeval,'&y1');
724: $safehole->wrap(\&Math::Cephes::yn,$safeeval,'&yn');
725: $safehole->wrap(\&Math::Cephes::yv,$safeeval,'&yv');
726:
727: $safehole->wrap(\&Math::Cephes::bdtr ,$safeeval,'&bdtr' );
728: $safehole->wrap(\&Math::Cephes::bdtrc ,$safeeval,'&bdtrc' );
729: $safehole->wrap(\&Math::Cephes::bdtri ,$safeeval,'&bdtri' );
730: $safehole->wrap(\&Math::Cephes::btdtr ,$safeeval,'&btdtr' );
731: $safehole->wrap(\&Math::Cephes::chdtr ,$safeeval,'&chdtr' );
732: $safehole->wrap(\&Math::Cephes::chdtrc,$safeeval,'&chdtrc');
733: $safehole->wrap(\&Math::Cephes::chdtri,$safeeval,'&chdtri');
734: $safehole->wrap(\&Math::Cephes::fdtr ,$safeeval,'&fdtr' );
735: $safehole->wrap(\&Math::Cephes::fdtrc ,$safeeval,'&fdtrc' );
736: $safehole->wrap(\&Math::Cephes::fdtri ,$safeeval,'&fdtri' );
737: $safehole->wrap(\&Math::Cephes::gdtr ,$safeeval,'&gdtr' );
738: $safehole->wrap(\&Math::Cephes::gdtrc ,$safeeval,'&gdtrc' );
739: $safehole->wrap(\&Math::Cephes::nbdtr ,$safeeval,'&nbdtr' );
740: $safehole->wrap(\&Math::Cephes::nbdtrc,$safeeval,'&nbdtrc');
741: $safehole->wrap(\&Math::Cephes::nbdtri,$safeeval,'&nbdtri');
742: $safehole->wrap(\&Math::Cephes::ndtr ,$safeeval,'&ndtr' );
743: $safehole->wrap(\&Math::Cephes::ndtri ,$safeeval,'&ndtri' );
744: $safehole->wrap(\&Math::Cephes::pdtr ,$safeeval,'&pdtr' );
745: $safehole->wrap(\&Math::Cephes::pdtrc ,$safeeval,'&pdtrc' );
746: $safehole->wrap(\&Math::Cephes::pdtri ,$safeeval,'&pdtri' );
747: $safehole->wrap(\&Math::Cephes::stdtr ,$safeeval,'&stdtr' );
748: $safehole->wrap(\&Math::Cephes::stdtri,$safeeval,'&stdtri');
749:
750: $safehole->wrap(\&Math::Cephes::Matrix::mat,$safeeval,'&mat');
751: $safehole->wrap(\&Math::Cephes::Matrix::new,$safeeval,
752: '&Math::Cephes::Matrix::new');
753: $safehole->wrap(\&Math::Cephes::Matrix::coef,$safeeval,
754: '&Math::Cephes::Matrix::coef');
755: $safehole->wrap(\&Math::Cephes::Matrix::clr,$safeeval,
756: '&Math::Cephes::Matrix::clr');
757: $safehole->wrap(\&Math::Cephes::Matrix::add,$safeeval,
758: '&Math::Cephes::Matrix::add');
759: $safehole->wrap(\&Math::Cephes::Matrix::sub,$safeeval,
760: '&Math::Cephes::Matrix::sub');
761: $safehole->wrap(\&Math::Cephes::Matrix::mul,$safeeval,
762: '&Math::Cephes::Matrix::mul');
763: $safehole->wrap(\&Math::Cephes::Matrix::div,$safeeval,
764: '&Math::Cephes::Matrix::div');
765: $safehole->wrap(\&Math::Cephes::Matrix::inv,$safeeval,
766: '&Math::Cephes::Matrix::inv');
767: $safehole->wrap(\&Math::Cephes::Matrix::transp,$safeeval,
768: '&Math::Cephes::Matrix::transp');
769: $safehole->wrap(\&Math::Cephes::Matrix::simq,$safeeval,
770: '&Math::Cephes::Matrix::simq');
771: $safehole->wrap(\&Math::Cephes::Matrix::mat_to_vec,$safeeval,
772: '&Math::Cephes::Matrix::mat_to_vec');
773: $safehole->wrap(\&Math::Cephes::Matrix::vec_to_mat,$safeeval,
774: '&Math::Cephes::Matrix::vec_to_mat');
775: $safehole->wrap(\&Math::Cephes::Matrix::check,$safeeval,
776: '&Math::Cephes::Matrix::check');
777: $safehole->wrap(\&Math::Cephes::Matrix::check,$safeeval,
778: '&Math::Cephes::Matrix::check');
779:
780: # $safehole->wrap(\&Math::Cephes::new_fract,$safeeval,'&new_fract');
781: # $safehole->wrap(\&Math::Cephes::radd,$safeeval,'&radd');
782: # $safehole->wrap(\&Math::Cephes::rsub,$safeeval,'&rsub');
783: # $safehole->wrap(\&Math::Cephes::rmul,$safeeval,'&rmul');
784: # $safehole->wrap(\&Math::Cephes::rdiv,$safeeval,'&rdiv');
785: # $safehole->wrap(\&Math::Cephes::euclid,$safeeval,'&euclid');
786:
787: $safehole->wrap(\&Math::Random::random_beta,$safeeval,'&math_random_beta');
788: $safehole->wrap(\&Math::Random::random_chi_square,$safeeval,'&math_random_chi_square');
789: $safehole->wrap(\&Math::Random::random_exponential,$safeeval,'&math_random_exponential');
790: $safehole->wrap(\&Math::Random::random_f,$safeeval,'&math_random_f');
791: $safehole->wrap(\&Math::Random::random_gamma,$safeeval,'&math_random_gamma');
792: $safehole->wrap(\&Math::Random::random_multivariate_normal,$safeeval,'&math_random_multivariate_normal');
793: $safehole->wrap(\&Math::Random::random_multinomial,$safeeval,'&math_random_multinomial');
794: $safehole->wrap(\&Math::Random::random_noncentral_chi_square,$safeeval,'&math_random_noncentral_chi_square');
795: $safehole->wrap(\&Math::Random::random_noncentral_f,$safeeval,'&math_random_noncentral_f');
796: $safehole->wrap(\&Math::Random::random_normal,$safeeval,'&math_random_normal');
797: $safehole->wrap(\&Math::Random::random_permutation,$safeeval,'&math_random_permutation');
798: $safehole->wrap(\&Math::Random::random_permuted_index,$safeeval,'&math_random_permuted_index');
799: $safehole->wrap(\&Math::Random::random_uniform,$safeeval,'&math_random_uniform');
800: $safehole->wrap(\&Math::Random::random_poisson,$safeeval,'&math_random_poisson');
801: $safehole->wrap(\&Math::Random::random_uniform_integer,$safeeval,'&math_random_uniform_integer');
802: $safehole->wrap(\&Math::Random::random_negative_binomial,$safeeval,'&math_random_negative_binomial');
803: $safehole->wrap(\&Math::Random::random_binomial,$safeeval,'&math_random_binomial');
804: $safehole->wrap(\&Math::Random::random_seed_from_phrase,$safeeval,'&random_seed_from_phrase');
805: $safehole->wrap(\&Math::Random::random_set_seed_from_phrase,$safeeval,'&random_set_seed_from_phrase');
806: $safehole->wrap(\&Math::Random::random_get_seed,$safeeval,'&random_get_seed');
807: $safehole->wrap(\&Math::Random::random_set_seed,$safeeval,'&random_set_seed');
808: $safehole->wrap(\&Apache::loncommon::languages,$safeeval,'&languages');
809: $safehole->wrap(\&Apache::lonxml::error,$safeeval,'&LONCAPA_INTERNAL_ERROR');
810: $safehole->wrap(\&Apache::lonxml::debug,$safeeval,'&LONCAPA_INTERNAL_DEBUG');
811: $safehole->wrap(\&Apache::lonnet::logthis,$safeeval,'&LONCAPA_INTERNAL_LOGTHIS');
812: $safehole->wrap(\&Apache::inputtags::finalizeawards,$safeeval,'&LONCAPA_INTERNAL_FINALIZEAWARDS');
813: $safehole->wrap(\&Apache::caparesponse::get_sigrange,$safeeval,'&LONCAPA_INTERNAL_get_sigrange');
814: $safehole->wrap(\&Apache::functionplotresponse::fpr_val,$safeeval,'&fpr_val');
815: $safehole->wrap(\&Apache::functionplotresponse::fpr_f,$safeeval,'&fpr_f');
816: $safehole->wrap(\&Apache::functionplotresponse::fpr_dfdx,$safeeval,'&fpr_dfdx');
817: $safehole->wrap(\&Apache::functionplotresponse::fpr_d2fdx2,$safeeval,'&fpr_d2fdx2');
818: $safehole->wrap(\&Apache::functionplotresponse::fpr_vectorcoords,$safeeval,'&fpr_vectorcoords');
819: $safehole->wrap(\&Apache::functionplotresponse::fpr_objectcoords,$safeeval,'&fpr_objectcoords');
820: $safehole->wrap(\&Apache::functionplotresponse::fpr_vectorlength,$safeeval,'&fpr_vectorlength');
821: $safehole->wrap(\&Apache::functionplotresponse::fpr_vectorangle,$safeeval,'&fpr_vectorangle');
822:
823: # use Data::Dumper;
824: # $safehole->wrap(\&Data::Dumper::Dumper,$safeeval,'&LONCAPA_INTERNAL_Dumper');
825: #need to inspect this class of ops
826: # $safeeval->deny(":base_orig");
827: $safeeval->permit("require");
828: $safeinit .= ';$external::target="'.$target.'";';
829: &Apache::run::run($safeinit,$safeeval);
830: my $rawrndseed = &initialize_rndseed($safeeval);
831: if ($target eq 'grade') {
832: $Apache::lonhomework::rawrndseed = $rawrndseed;
833: }
834: }
835:
836: sub clean_safespace {
837: my ($safeeval) = @_;
838: delete_package_recurse($safeeval->{Root});
839: }
840:
841: sub delete_package_recurse {
842: my ($package) = @_;
843: my @subp;
844: {
845: no strict 'refs';
846: while (my ($key,$val) = each(%{*{"$package\::"}})) {
847: if (!defined($val)) { next; }
848: local (*ENTRY) = $val;
849: if (defined *ENTRY{HASH} && $key =~ /::$/ &&
850: $key ne "main::" && $key ne "<none>::")
851: {
852: my ($p) = $package ne "main" ? "$package\::" : "";
853: ($p .= $key) =~ s/::$//;
854: push(@subp,$p);
855: }
856: }
857: }
858: foreach my $p (@subp) {
859: delete_package_recurse($p);
860: }
861: Symbol::delete_package($package);
862: }
863:
864: sub initialize_rndseed {
865: my ($safeeval)=@_;
866: my $rndseed;
867: my ($symb,$courseid,$domain,$name) = &Apache::lonnet::whichuser();
868: $rndseed=&Apache::lonnet::rndseed($symb,$courseid,$domain,$name);
869: my $safeinit = '$external::randomseed="'.$rndseed.'";';
870: &Apache::lonxml::debug("Setting rndseed to $rndseed");
871: &Apache::run::run($safeinit,$safeeval);
872: return $rndseed;
873: }
874:
875: sub default_homework_load {
876: my ($safeeval)=@_;
877: &Apache::lonxml::debug('Loading default_homework');
878: my $default=&Apache::lonnet::getfile($Apache::lonnet::perlvar{'lonIncludes'}.
879: '/default_homework.lcpm');
880: if ($default eq -1) {
881: &Apache::lonxml::error("<b>Unable to find <i>default_homework.lcpm</i></b>");
882: } else {
883: &Apache::run::run($default,$safeeval);
884: $Apache::lonxml::default_homework_loaded=1;
885: }
886: }
887:
888: {
889: my $alarm_depth;
890: sub init_alarm {
891: alarm(0);
892: $alarm_depth=0;
893: }
894:
895: sub start_alarm {
896: if ($alarm_depth<1) {
897: my $old=alarm($Apache::lonnet::perlvar{'lonScriptTimeout'});
898: if ($old) {
899: &Apache::lonxml::error("Cancelled an alarm of $old, this shouldn't occur.");
900: }
901: }
902: $alarm_depth++;
903: }
904:
905: sub end_alarm {
906: $alarm_depth--;
907: if ($alarm_depth<1) { alarm(0); }
908: }
909: }
910: my $metamode_was;
911: sub startredirection {
912: if (!$Apache::lonxml::redirection) {
913: $metamode_was=$Apache::lonxml::metamode;
914: }
915: $Apache::lonxml::metamode=0;
916: $Apache::lonxml::redirection++;
917: push (@Apache::lonxml::outputstack, '');
918: }
919:
920: sub endredirection {
921: if (!$Apache::lonxml::redirection) {
922: &Apache::lonxml::error("Endredirection was called before a startredirection, perhaps you have unbalanced tags. Some debugging information:".join ":",caller);
923: return '';
924: }
925: $Apache::lonxml::redirection--;
926: if (!$Apache::lonxml::redirection) {
927: $Apache::lonxml::metamode=$metamode_was;
928: }
929: pop @Apache::lonxml::outputstack;
930: }
931: sub in_redirection {
932: return ($Apache::lonxml::redirection > 0)
933: }
934:
935: sub end_tag {
936: my ($tagstack,$parstack,$token)=@_;
937: pop(@$tagstack);
938: pop(@$parstack);
939: &decreasedepth($token);
940: }
941:
942: sub initdepth {
943: @Apache::lonxml::depthcounter=();
944: undef($Apache::lonxml::last_depth_count);
945: }
946:
947:
948: my @timers;
949: my $lasttime;
950: # @Apache::lonxml::depthcounter -> count of tags that exist so
951: # far at each level
952: # $Apache::lonxml::last_depth_count -> when ascending, need to
953: # remember the count for the level below the current level (for
954: # example going from 1_2 -> 1 -> 1_3 need to remember the 2 )
955:
956: sub increasedepth {
957: my ($token) = @_;
958: push(@Apache::lonxml::depthcounter,$Apache::lonxml::last_depth_count+1);
959: undef($Apache::lonxml::last_depth_count);
960: my $time;
961: if ($Apache::lonxml::debug eq "1") {
962: push(@timers,[&gettimeofday()]);
963: $time=&tv_interval($lasttime);
964: $lasttime=[&gettimeofday()];
965: }
966: my $spacing=' 'x($#Apache::lonxml::depthcounter);
967: $Apache::lonxml::curdepth=join('_',@Apache::lonxml::depthcounter);
968: # &Apache::lonxml::debug("s$spacing$Apache::lonxml::depth : $Apache::lonxml::olddepth : $Apache::lonxml::curdepth : $token->[1] : $time");
969: #print "<br />s $Apache::lonxml::depth : $Apache::lonxml::olddepth : $curdepth : $token->[1]\n";
970: }
971:
972: sub decreasedepth {
973: my ($token) = @_;
974: if ( $#Apache::lonxml::depthcounter == -1) {
975: &Apache::lonxml::warning(&mt("Missing tags, unable to properly run file."));
976: }
977: $Apache::lonxml::last_depth_count = pop(@Apache::lonxml::depthcounter);
978:
979: my ($timer,$time);
980: if ($Apache::lonxml::debug eq "1") {
981: $timer=pop(@timers);
982: $time=&tv_interval($lasttime);
983: $lasttime=[&gettimeofday()];
984: }
985: my $spacing=' 'x($#Apache::lonxml::depthcounter);
986: $Apache::lonxml::curdepth = join('_',@Apache::lonxml::depthcounter);
987: # &Apache::lonxml::debug("e$spacing$Apache::lonxml::depth : $Apache::lonxml::olddepth : $Apache::lonxml::curdepth : $token->[1] : $time : ".&tv_interval($timer));
988: #print "<br />e $Apache::lonxml::depth : $Apache::lonxml::olddepth : $token->[1] : $curdepth\n";
989: }
990:
991: sub get_id {
992: my ($parstack,$safeeval)=@_;
993: my $id= &Apache::lonxml::get_param('id',$parstack,$safeeval);
994: if ($env{'request.state'} eq 'construct' && $id =~ /([._]|[^\w\d\s[:punct:]])/) {
995: &error(&mt('ID [_1] contains invalid characters. IDs are only allowed to contain letters, numbers, spaces and -','"<tt>'.$id.'</tt>"'));
996: }
997: if ($id =~ /^\s*$/) { $id = $Apache::lonxml::curdepth; }
998: return $id;
999: }
1000:
1001: sub get_all_text_unbalanced {
1002: #there is a copy of this in lonpublisher.pm
1003: my($tag,$pars)= @_;
1004: my $token;
1005: my $result='';
1006: $tag='<'.$tag.'>';
1007: while ($token = $$pars[-1]->get_token) {
1008: if (($token->[0] eq 'T')||($token->[0] eq 'C')||($token->[0] eq 'D')) {
1009: if ($token->[0] eq 'T' && $token->[2]) {
1010: $result.='<![CDATA['.$token->[1].']]>';
1011: } else {
1012: $result.=$token->[1];
1013: }
1014: } elsif ($token->[0] eq 'PI') {
1015: $result.=$token->[2];
1016: } elsif ($token->[0] eq 'S') {
1017: $result.=$token->[4];
1018: } elsif ($token->[0] eq 'E') {
1019: $result.=$token->[2];
1020: }
1021: if ($result =~ /\Q$tag\E/is) {
1022: ($result,my $redo)=$result =~ /(.*)\Q$tag\E(.*)/is;
1023: #&Apache::lonxml::debug('Got a winner with leftovers ::'.$2);
1024: #&Apache::lonxml::debug('Result is :'.$1);
1025: $redo=$tag.$redo;
1026: &Apache::lonxml::newparser($pars,\$redo);
1027: last;
1028: }
1029: }
1030: return $result
1031:
1032: }
1033:
1034: #########################################################################
1035: # #
1036: # bubble line counter management #
1037: # #
1038: #########################################################################
1039:
1040: =pod
1041:
1042: For bubble grading mode and exam bubble printing mode, the tracking of
1043: the current 'bubble line number' is stored in the %env element
1044: 'form.counter', and is modifed and handled by the following routines.
1045:
1046: The value of it is stored in $Apache:lonxml::counter when live and
1047: stored back to env after done.
1048:
1049: =item &increment_counter($increment, $part_response);
1050:
1051: Increments the internal counter environment variable a specified amount
1052:
1053: Optional Arguments:
1054: $increment - amount to increment by (defaults to 1)
1055: Also 1 if the value is negative or zero.
1056: $part_response - A concatenation of the part and response id
1057: identifying exactly what is being 'answered'.
1058:
1059:
1060: =cut
1061:
1062: sub increment_counter {
1063: my ($increment, $part_response) = @_;
1064: if ($env{'form.grade_noincrement'}) { return; }
1065: if (!defined($increment) || $increment le 0) {
1066: $increment = 1;
1067: }
1068: $Apache::lonxml::counter += $increment;
1069:
1070: # If the caller supplied the response_id parameter,
1071: # Maintain its counter.. creating if necessary.
1072:
1073: if (defined($part_response)) {
1074: if (!defined($Apache::lonxml::counters_per_part{$part_response})) {
1075: $Apache::lonxml::counters_per_part{$part_response} = 0;
1076: }
1077: $Apache::lonxml::counters_per_part{$part_response} += $increment;
1078: my $new_value = $Apache::lonxml::counters_per_part{$part_response};
1079: }
1080:
1081: $Apache::lonxml::counter_changed=1;
1082: }
1083:
1084: =pod
1085:
1086: =item &init_counter($increment);
1087:
1088: Initialize the internal counter environment variable
1089:
1090: =cut
1091:
1092: sub init_counter {
1093: if ($env{'request.state'} eq 'construct') {
1094: $Apache::lonxml::counter=1;
1095: $Apache::lonxml::counter_changed=1;
1096: } elsif (defined($env{'form.counter'})) {
1097: $Apache::lonxml::counter=$env{'form.counter'};
1098: $Apache::lonxml::counter_changed=0;
1099: } else {
1100: $Apache::lonxml::counter=1;
1101: $Apache::lonxml::counter_changed=1;
1102: }
1103: }
1104:
1105: sub store_counter {
1106: &Apache::lonnet::appenv({'form.counter' => $Apache::lonxml::counter});
1107: $Apache::lonxml::counter_changed=0;
1108: return '';
1109: }
1110:
1111: {
1112: my $state;
1113: sub clear_problem_counter {
1114: undef($state);
1115: &Apache::lonnet::delenv('form.counter');
1116: &Apache::lonxml::init_counter();
1117: &Apache::lonxml::store_counter();
1118: }
1119:
1120: sub remember_problem_counter {
1121: &Apache::lonnet::transfer_profile_to_env(undef,undef,1);
1122: $state = $env{'form.counter'};
1123: }
1124:
1125: sub restore_problem_counter {
1126: if (defined($state)) {
1127: &Apache::lonnet::appenv({'form.counter' => $state});
1128: }
1129: }
1130: sub get_problem_counter {
1131: if ($Apache::lonxml::counter_changed) { &store_counter() }
1132: &Apache::lonnet::transfer_profile_to_env(undef,undef,1);
1133: return $env{'form.counter'};
1134: }
1135: }
1136:
1137: =pod
1138:
1139: =item bubble_lines_for_part(part_response)
1140:
1141: Returns the number of lines required to get a response for
1142: $part_response (this is just $Apache::lonxml::counters_per_part{$part_response}
1143:
1144: =cut
1145:
1146: sub bubble_lines_for_part {
1147: my ($part_response) = @_;
1148:
1149: if (!defined($Apache::lonxml::counters_per_part{$part_response})) {
1150: return 0;
1151: } else {
1152: return $Apache::lonxml::counters_per_part{$part_response};
1153: }
1154: }
1155:
1156: =pod
1157:
1158: =item clear_bubble_lines_for_part
1159:
1160: Clears the hash of bubble lines per part. If a caller
1161: needs to analyze several resources this should be called between
1162: resources to reset the hash for each problem being analyzed.
1163:
1164: =cut
1165:
1166: sub clear_bubble_lines_for_part {
1167: undef(%Apache::lonxml::counters_per_part);
1168: }
1169:
1170: =pod
1171:
1172: =item set_bubble_lines(part_response, value)
1173:
1174: If there is a problem part, that for whatever reason
1175: requires bubble lines that are not
1176: the same as the counter increment, it can call this sub during
1177: analysis to set its hash value explicitly.
1178:
1179: =cut
1180:
1181: sub set_bubble_lines {
1182: my ($part_response, $value) = @_;
1183:
1184: $Apache::lonxml::counters_per_part{$part_response} = $value;
1185: }
1186:
1187: =pod
1188:
1189: =item get_bubble_line_hash
1190:
1191: Returns the current bubble line hash. This is assumed to
1192: be small so we return a copy
1193:
1194:
1195: =cut
1196:
1197: sub get_bubble_line_hash {
1198: return %Apache::lonxml::counters_per_part;
1199: }
1200:
1201:
1202: #--------------------------------------------------
1203:
1204: sub get_all_text {
1205: my($tag,$pars,$style)= @_;
1206: my $gotfullstack=1;
1207: if (ref($pars) ne 'ARRAY') {
1208: $gotfullstack=0;
1209: $pars=[$pars];
1210: }
1211: if (ref($style) ne 'HASH') {
1212: $style={};
1213: }
1214: my $depth=0;
1215: my $token;
1216: my $result='';
1217: if ( $tag =~ m:^/: ) {
1218: my $tag=substr($tag,1);
1219: #&Apache::lonxml::debug("have:$tag:");
1220: my $top_empty=0;
1221: while (($depth >=0) && ($#$pars > -1) && (!$top_empty)) {
1222: while (($depth >=0) && ($token = $$pars[-1]->get_token)) {
1223: #&Apache::lonxml::debug("e token:$token->[0]:$depth:$token->[1]:".$#$pars.":".$#Apache::lonxml::pwd);
1224: if (($token->[0] eq 'T')||($token->[0] eq 'C')||($token->[0] eq 'D')) {
1225: if ($token->[2]) {
1226: $result.='<![CDATA['.$token->[1].']]>';
1227: } else {
1228: $result.=$token->[1];
1229: }
1230: } elsif ($token->[0] eq 'PI') {
1231: $result.=$token->[2];
1232: } elsif ($token->[0] eq 'S') {
1233: if ($token->[1] =~ /^\Q$tag\E$/i) { $depth++; }
1234: if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_ON$/) { $Apache::lonxml::usestyle=1; }
1235: if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_OFF$/) { $Apache::lonxml::usestyle=0; }
1236: $result.=$token->[4];
1237: } elsif ($token->[0] eq 'E') {
1238: if ( $token->[1] =~ /^\Q$tag\E$/i) { $depth--; }
1239: #skip sending back the last end tag
1240: if ($depth == 0 && exists($$style{'/'.$token->[1]}) && $Apache::lonxml::usestyle) {
1241: my $string=
1242: '<LONCAPA_INTERNAL_TURN_STYLE_OFF end="yes" />'.
1243: $$style{'/'.$token->[1]}.
1244: $token->[2].
1245: '<LONCAPA_INTERNAL_TURN_STYLE_ON />';
1246: &Apache::lonxml::newparser($pars,\$string);
1247: #&Apache::lonxml::debug("reParsing $string");
1248: next;
1249: }
1250: if ($depth > -1) {
1251: $result.=$token->[2];
1252: } else {
1253: $$pars[-1]->unget_token($token);
1254: }
1255: }
1256: }
1257: if (($depth >=0) && ($#$pars == 0) ) { $top_empty=1; }
1258: if (($depth >=0) && ($#$pars > 0) ) {
1259: pop(@$pars);
1260: pop(@Apache::lonxml::pwd);
1261: }
1262: }
1263: if ($top_empty && $depth >= 0) {
1264: #never found the end tag ran out of text, throw error send back blank
1265: &error('Never found end tag for <'.$tag.
1266: '> current string <pre>'.
1267: &HTML::Entities::encode($result,'<>&"').
1268: '</pre>');
1269: if ($gotfullstack) {
1270: my $newstring='</'.$tag.'>'.$result;
1271: &Apache::lonxml::newparser($pars,\$newstring);
1272: }
1273: $result='';
1274: }
1275: } else {
1276: while ($#$pars > -1) {
1277: while ($token = $$pars[-1]->get_token) {
1278: #&Apache::lonxml::debug("s token:$token->[0]:$depth:$token->[1]");
1279: if (($token->[0] eq 'T')||($token->[0] eq 'C')||
1280: ($token->[0] eq 'D')) {
1281: if ($token->[2]) {
1282: $result.='<![CDATA['.$token->[1].']]>';
1283: } else {
1284: $result.=$token->[1];
1285: }
1286: } elsif ($token->[0] eq 'PI') {
1287: $result.=$token->[2];
1288: } elsif ($token->[0] eq 'S') {
1289: if ( $token->[1] =~ /^\Q$tag\E$/i) {
1290: $$pars[-1]->unget_token($token); last;
1291: } else {
1292: $result.=$token->[4];
1293: }
1294: if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_ON$/) { $Apache::lonxml::usestyle=1; }
1295: if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_OFF$/) { $Apache::lonxml::usestyle=0; }
1296: } elsif ($token->[0] eq 'E') {
1297: $result.=$token->[2];
1298: }
1299: }
1300: if (($#$pars > 0) ) {
1301: pop(@$pars);
1302: pop(@Apache::lonxml::pwd);
1303: } else { last; }
1304: }
1305: }
1306: #&Apache::lonxml::debug("Exit:$result:");
1307: return $result
1308: }
1309:
1310: sub newparser {
1311: my ($parser,$contentref,$dir) = @_;
1312: push (@$parser,HTML::LCParser->new($contentref));
1313: $$parser[-1]->xml_mode(1);
1314: $$parser[-1]->marked_sections(1);
1315: if ( $dir eq '' ) {
1316: push (@Apache::lonxml::pwd, $Apache::lonxml::pwd[$#Apache::lonxml::pwd]);
1317: } else {
1318: push (@Apache::lonxml::pwd, $dir);
1319: }
1320: }
1321:
1322: sub parstring {
1323: my ($token) = @_;
1324: my (@vars,@values);
1325: foreach my $attr (@{$token->[3]}) {
1326: if ($attr!~/\W/) {
1327: my $val=$token->[2]->{$attr};
1328: $val =~ s/([\%\@\\\"\'])/\\$1/g;
1329: $val =~ s/(\$[^\{a-zA-Z_])/\\$1/g;
1330: $val =~ s/(\$)$/\\$1/;
1331: #if ($val =~ m/^[\%\@]/) { $val="\\".$val; }
1332: push(@vars,"\$$attr");
1333: push(@values,"\"$val\"");
1334: }
1335: }
1336: my $var_init =
1337: (@vars) ? 'my ('.join(',',@vars).') = ('.join(',',@values).');'
1338: : '';
1339: return $var_init;
1340: }
1341:
1342: sub extlink {
1343: my ($res,$exact)=@_;
1344: if (!$exact) {
1345: $res=&Apache::lonnet::hreflocation($Apache::lonxml::pwd[-1],$res);
1346: }
1347: push(@Apache::lonxml::extlinks,$res);
1348: }
1349:
1350: sub writeallows {
1351: unless ($#extlinks>=0) { return; }
1352: my $thisurl = &Apache::lonnet::clutter(shift);
1353: if ($env{'httpref.'.$thisurl}) {
1354: $thisurl=$env{'httpref.'.$thisurl};
1355: }
1356: my $thisdir=$thisurl;
1357: $thisdir=~s/\/[^\/]+$//;
1358: my %httpref=();
1359: foreach (@extlinks) {
1360: $httpref{'httpref.'.
1361: &Apache::lonnet::hreflocation($thisdir,&unescape($_))}=$thisurl;
1362: }
1363: @extlinks=();
1364: &Apache::lonnet::appenv(\%httpref);
1365: }
1366:
1367: sub register_ssi {
1368: my ($url,%form)=@_;
1369: push (@Apache::lonxml::ssi_info,{'url'=>$url,'form'=>\%form});
1370: return '';
1371: }
1372:
1373: sub do_registered_ssi {
1374: foreach my $info (@Apache::lonxml::ssi_info) {
1375: my %form=%{ $info->{'form'}};
1376: my $url=$info->{'url'};
1377: &Apache::lonnet::ssi($url,%form);
1378: }
1379: }
1380:
1381: sub add_script_result {
1382: my ($display) = @_;
1383: if ($display ne '') {
1384: push(@script_var_displays, $display);
1385: }
1386: }
1387:
1388: #
1389: # Afterburner handles anchors, highlights and links
1390: #
1391: sub afterburn {
1392: my $result=shift;
1393: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
1394: ['highlight','anchor','link']);
1395: if ($env{'form.highlight'}) {
1396: foreach (split(/\,/,$env{'form.highlight'})) {
1397: my $anchorname=$_;
1398: my $matchthis=$anchorname;
1399: $matchthis=~s/\_+/\\s\+/g;
1400: $result=~s/(\Q$matchthis\E)/\<font color=\"red\"\>$1\<\/font\>/gs;
1401: }
1402: }
1403: if ($env{'form.link'}) {
1404: foreach (split(/\,/,$env{'form.link'})) {
1405: my ($anchorname,$linkurl)=split(/\>/,$_);
1406: my $matchthis=$anchorname;
1407: $matchthis=~s/\_+/\\s\+/g;
1408: $result=~s/(\Q$matchthis\E)/\<a href=\"$linkurl\"\>$1\<\/a\>/gs;
1409: }
1410: }
1411: if ($env{'form.anchor'}) {
1412: my $anchorname=$env{'form.anchor'};
1413: my $matchthis=$anchorname;
1414: $matchthis=~s/\_+/\\s\+/g;
1415: $result=~s/(\Q$matchthis\E)/\<a name=\"$anchorname\"\>$1\<\/a\>/s;
1416: $result.=(<<"ENDSCRIPT");
1417: <script type="text/javascript">
1418: document.location.hash='$anchorname';
1419: </script>
1420: ENDSCRIPT
1421: }
1422: return $result;
1423: }
1424:
1425: sub storefile {
1426: my ($file,$contents)=@_;
1427: &Apache::lonnet::correct_line_ends(\$contents);
1428: if (my $fh=Apache::File->new('>'.$file)) {
1429: print $fh $contents;
1430: $fh->close();
1431: return 1;
1432: } else {
1433: &warning(&mt('Unable to save file [_1]','<tt>'.$file.'</tt>'));
1434: return 0;
1435: }
1436: }
1437:
1438: sub createnewhtml {
1439: my $title=&mt('Title of document goes here');
1440: my $body=&mt('Body of document goes here');
1441: my $filecontents=(<<SIMPLECONTENT);
1442: <html>
1443: <head>
1444: <title>$title</title>
1445: </head>
1446: <body bgcolor="#FFFFFF">
1447: $body
1448: </body>
1449: </html>
1450: SIMPLECONTENT
1451: return $filecontents;
1452: }
1453:
1454: sub createnewsty {
1455: my $filecontents=(<<SIMPLECONTENT);
1456: <definetag name="">
1457: <render>
1458: <web></web>
1459: <tex></tex>
1460: </render>
1461: </definetag>
1462: SIMPLECONTENT
1463: return $filecontents;
1464: }
1465:
1466: sub createnewjs {
1467: my $filecontents=(<<SIMPLECONTENT);
1468: <script type="text/javascript" language="Javascript">
1469:
1470: </script>
1471: SIMPLECONTENT
1472: return $filecontents;
1473: }
1474:
1475: sub verify_html {
1476: my ($filecontents)=@_;
1477: my ($is_html,$is_xml,$is_physnet);
1478: if ($filecontents =~/(?:\<|\<\;)\?xml[^\<]*\?(?:\>|\>\;)/is) {
1479: $is_xml = 1;
1480: } elsif ($filecontents =~/(?:\<|\<\;)html(?:\s+[^\<]+|\s*)(?:\>|\>\;)/is) {
1481: $is_html = 1;
1482: } elsif ($filecontents =~/(?:\<|\<\;)physnet[^\<]*(?:\>|\>\;)/is) {
1483: $is_physnet = 1;
1484: }
1485: unless ($is_xml || $is_html || $is_physnet) {
1486: return &mt('File does not have [_1] or [_2] starting tag','<html>','<?xml ?>');
1487: }
1488: if ($is_html) {
1489: if ($filecontents!~/(?:\<|\<\;)\/html(?:\>|\>\;)/is) {
1490: return &mt('File does not have [_1] ending tag','<html>');
1491: }
1492: if ($filecontents!~/(?:\<|\<\;)(?:body|frameset)[^\<]*(?:\>|\>\;)/is) {
1493: return &mt('File does not have [_1] or [_2] starting tag','<body>','<frameset>');
1494: }
1495: if ($filecontents!~/(?:\<|\<\;)\/(?:body|frameset)[^\<]*(?:\>|\>\;)/is) {
1496: return &mt('File does not have [_1] or [_2] ending tag','<body>','<frameset>');
1497: }
1498: }
1499: return '';
1500: }
1501:
1502: sub renderingoptions {
1503: my %langchoices=('' => '');
1504: foreach (&Apache::loncommon::languageids()) {
1505: if (&Apache::loncommon::supportedlanguagecode($_)) {
1506: $langchoices{&Apache::loncommon::supportedlanguagecode($_)}
1507: = &Apache::loncommon::plainlanguagedescription($_);
1508: }
1509: }
1510: my $output;
1511: unless ($env{'form.forceedit'}) {
1512: $output .=
1513: '<span class="LC_nobreak">'.
1514: &mt('Language:').' '.
1515: &Apache::loncommon::select_form(
1516: $env{'form.languages'},
1517: 'languages',
1518: {&Apache::lonlocal::texthash(%langchoices)}).
1519: '</span>';
1520: }
1521: $output .=
1522: ' <span class="LC_nobreak">'.
1523: &mt('Math Rendering:').' '.
1524: &Apache::loncommon::select_form(
1525: $env{'form.texengine'},
1526: 'texengine',
1527: {&Apache::lonlocal::texthash
1528: ('' => '',
1529: 'tth' => 'tth (TeX to HTML)',
1530: 'MathJax' => 'MathJax',
1531: 'mimetex' => 'mimetex (Convert to Images)')}).
1532: '</span>';
1533: return $output;
1534: }
1535:
1536: sub inserteditinfo {
1537: my ($filecontents,$filetype,$filename,$symb,$itemtitle,$folderpath,$uri,$action) = @_;
1538: $filecontents = &HTML::Entities::encode($filecontents,'<>&"');
1539: my $xml_help = '';
1540: my $initialize='';
1541: my $textarea_id = 'filecont';
1542: my ($dragmath_button,$deps_button,$context,$cnum,$cdom,$add_to_onload,
1543: $add_to_onresize,$init_dragmath);
1544: $initialize=&Apache::lonhtmlcommon::spellheader();
1545: if ($filetype eq 'html') {
1546: if ($env{'request.course.id'}) {
1547: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
1548: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
1549: if ($uri =~ m{^\Q/uploaded/$cdom/$cnum/portfolio/syllabus/\E}) {
1550: $context = 'syllabus';
1551: }
1552: }
1553: if (&Apache::lonhtmlcommon::htmlareabrowser()) {
1554: my $lang = &Apache::lonhtmlcommon::htmlarea_lang();
1555: my %textarea_args = (
1556: fullpage => 'true',
1557: dragmath => 'math',
1558: );
1559: $initialize .= &Apache::lonhtmlcommon::htmlareaselectactive(\%textarea_args);
1560: if ($context eq 'syllabus') {
1561: $init_dragmath = "editmath_visibility('filecont','none')";
1562: }
1563: }
1564: }
1565: $initialize .= (<<FULLPAGE);
1566: <script type="text/javascript">
1567: // <![CDATA[
1568: function initDocument() {
1569: resize_textarea('$textarea_id','LC_aftertextarea');
1570: $init_dragmath
1571: }
1572: // ]]>
1573: </script>
1574: FULLPAGE
1575: my $textareaclass;
1576: if ($filetype eq 'html') {
1577: if ($context eq 'syllabus') {
1578: $deps_button = &Apache::lonhtmlcommon::dependencies_button()."\n";
1579: $initialize .=
1580: &Apache::lonhtmlcommon::dependencycheck_js(undef,&mt('Syllabus'),
1581: $uri,undef,
1582: "/public/$cdom/$cnum/syllabus").
1583: "\n";
1584: if (&Apache::lonhtmlcommon::htmlareabrowser()) {
1585: $textareaclass = 'class="LC_richDefaultOn"';
1586: }
1587: } elsif ($symb || $folderpath) {
1588: $deps_button = &Apache::lonhtmlcommon::dependencies_button()."\n";
1589: $initialize .=
1590: &Apache::lonhtmlcommon::dependencycheck_js($symb,$itemtitle,
1591: undef,$folderpath,$uri)."\n";
1592: }
1593: $dragmath_button = '<span id="math_filecont">'.&Apache::lonhtmlcommon::dragmath_button('filecont',1).'</span>';
1594: $initialize .= "\n".&Apache::lonhtmlcommon::dragmath_js('EditMathPopup');
1595: }
1596: $add_to_onload = 'initDocument();';
1597: $add_to_onresize = "resize_textarea('$textarea_id','LC_aftertextarea');";
1598:
1599: if ($filetype eq 'html') {
1600: my $not_author;
1601: if ($uri =~ m{^/uploaded/}) {
1602: $not_author = 1;
1603: }
1604: $xml_help=&Apache::loncommon::helpLatexCheatsheet(undef,undef,$not_author);
1605: }
1606:
1607: my $titledisplay=&display_title();
1608: my %lt=&Apache::lonlocal::texthash('st' => 'Save and Edit',
1609: 'vi' => 'Save and View',
1610: 'dv' => 'Discard Edits and View',
1611: 'un' => 'undo',
1612: 'ed' => 'Edit');
1613: my $spelllink = &Apache::lonhtmlcommon::spelllink('xmledit','filecont');
1614: my $textarea_events = &Apache::edit::element_change_detection();
1615: my $form_events = &Apache::edit::form_change_detection();
1616: my $htmlerror;
1617: if ($filetype eq 'html') {
1618: $htmlerror=&verify_html($filecontents);
1619: if ($htmlerror) {
1620: $htmlerror='<span class="LC_error">'.$htmlerror.'</span>';
1621: }
1622: if (&Apache::lonhtmlcommon::htmlareabrowser()) {
1623: unless ($textareaclass) {
1624: $textareaclass = 'class="LC_richDefaultOff"';
1625: }
1626: }
1627: }
1628: my $undo;
1629: unless ($uri =~ m{^/uploaded/}) {
1630: $undo = '<input type="submit" name="Undo" accesskey="u" value="'.$lt{'un'}.'" />'."\n";
1631: }
1632: my $editfooter=(<<ENDFOOTER);
1633: $initialize
1634: <a name="editsection" />
1635: <form $form_events method="post" name="xmledit" action="$action">
1636: <div class="LC_edit_problem_editxml_header">
1637: <table class="LC_edit_problem_header_title"><tr><td>
1638: $filename
1639: </td><td align="right">
1640: $xml_help
1641: </td></tr>
1642: </table>
1643: <div>
1644: <input type="submit" name="discardview" accesskey="d" value="$lt{'dv'}" />
1645: $undo $htmlerror $deps_button $dragmath_button
1646: </div>
1647: <div style="float:right">
1648: <input type="submit" name="savethisfile" accesskey="s" value="$lt{'st'}" />
1649: <input type="submit" name="viewmode" accesskey="v" value="$lt{'vi'}" />
1650: </div>
1651: </div>
1652: <textarea $textarea_events style="width:100%" cols="80" rows="44" name="filecont" id="filecont" $textareaclass>$filecontents</textarea><br />$spelllink
1653: <div id="LC_aftertextarea">
1654: <br />
1655: $titledisplay
1656: </div>
1657: </form>
1658: ENDFOOTER
1659: return ($editfooter,$add_to_onload,$add_to_onresize);;
1660: }
1661:
1662: sub get_target {
1663: my $viewgrades=&Apache::lonnet::allowed('vgr',$env{'request.course.id'});
1664: if ( $env{'request.state'} eq 'published') {
1665: if ( defined($env{'form.grade_target'})
1666: && ($viewgrades == 'F' )) {
1667: return ($env{'form.grade_target'});
1668: } elsif (defined($env{'form.grade_target'})) {
1669: if (($env{'form.grade_target'} eq 'web') ||
1670: ($env{'form.grade_target'} eq 'tex') ) {
1671: return $env{'form.grade_target'}
1672: } else {
1673: return 'web';
1674: }
1675: } else {
1676: return 'web';
1677: }
1678: } elsif ($env{'request.state'} eq 'construct') {
1679: if ( defined($env{'form.grade_target'})) {
1680: return ($env{'form.grade_target'});
1681: } else {
1682: return 'web';
1683: }
1684: } else {
1685: return 'web';
1686: }
1687: }
1688:
1689: sub handler {
1690: my $request=shift;
1691:
1692: my $target=&get_target();
1693: $Apache::lonxml::debug=$env{'user.debug'};
1694:
1695: &Apache::loncommon::content_type($request,'text/html');
1696: &Apache::loncommon::no_cache($request);
1697: if ($env{'request.state'} eq 'published') {
1698: $request->set_last_modified(&Apache::lonnet::metadata($request->uri,
1699: 'lastrevisiondate'));
1700: }
1701: # Embedded Flash movies from Camtasia served from https will not display in IE
1702: # if XML config file has expired from cache.
1703: if ($ENV{'SERVER_PORT'} == 443) {
1704: if ($request->uri =~ /\.xml$/) {
1705: my ($httpbrowser,$clientbrowser) =
1706: &Apache::loncommon::decode_user_agent($request);
1707: if ($clientbrowser =~ /^explorer$/i) {
1708: delete $request->headers_out->{'Cache-control'};
1709: delete $request->headers_out->{'Pragma'};
1710: my $expiration = time + 60;
1711: my $date=strftime("%a, %d %b %Y %H:%M:%S GMT",gmtime($expiration));
1712: $request->headers_out->set("Expires" => $date);
1713: }
1714: }
1715: }
1716: $request->send_http_header;
1717:
1718: return OK if $request->header_only;
1719:
1720:
1721: my $file=&Apache::lonnet::filelocation("",$request->uri);
1722: my ($filetype,$breadcrumbtext);
1723: if ($file =~ /\.(sty|css|js|txt|tex)$/) {
1724: $filetype=$1;
1725: } else {
1726: $filetype='html';
1727: }
1728: unless ($env{'request.uri'}) {
1729: $env{'request.uri'}=$request->uri;
1730: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
1731: ['todocs']);
1732: }
1733: my ($cdom,$cnum);
1734: if ($env{'request.course.id'}) {
1735: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
1736: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
1737: if ($filetype eq 'html') {
1738: if ($request->uri =~ m{^\Q/uploaded/$cdom/$cnum/portfolio/syllabus/\E.+$}) {
1739: if (&Apache::lonnet::allowed('mdc',$env{'request.course.id'})) {
1740: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
1741: ['editmode']);
1742: }
1743: }
1744: }
1745: }
1746: if ($filetype eq 'sty') {
1747: $breadcrumbtext = 'Style File Editor';
1748: } elsif ($filetype eq 'js') {
1749: $breadcrumbtext = 'Javascript Editor';
1750: } elsif ($filetype eq 'css') {
1751: $breadcrumbtext = 'CSS Editor';
1752: } elsif ($filetype eq 'txt') {
1753: $breadcrumbtext = 'Text Editor';
1754: } elsif ($filetype eq 'tex') {
1755: $breadcrumbtext = 'TeX Editor';
1756: } else {
1757: $breadcrumbtext = 'HTML Editor';
1758: }
1759:
1760: #
1761: # Edit action? Save file.
1762: #
1763: if (!($env{'request.state'} eq 'published')) {
1764: if ($env{'form.savethisfile'} || $env{'form.viewmode'} || $env{'form.Undo'}) {
1765: my $html_file=&Apache::lonnet::getfile($file);
1766: my $error = &Apache::lonhomework::handle_save_or_undo($request, \$html_file, \$env{'form.filecont'});
1767: if ($env{'form.savethisfile'}) {
1768: $env{'form.editmode'}='Edit'; #force edit mode
1769: }
1770: }
1771: }
1772: my $inhibit_menu;
1773: my %mystyle;
1774: my $result = '';
1775: my $filecontents=&Apache::lonnet::getfile($file);
1776: if ($filecontents eq -1) {
1777: my $start_page=&Apache::loncommon::start_page('File Error');
1778: my $end_page=&Apache::loncommon::end_page();
1779: my $errormsg='<p class="LC_error">'
1780: .&mt('File not found: [_1]'
1781: ,'<span class="LC_filename">'.$file.'</span>')
1782: .'</p>';
1783: $result=(<<ENDNOTFOUND);
1784: $start_page
1785: $errormsg
1786: $end_page
1787: ENDNOTFOUND
1788: $filecontents='';
1789: if ($env{'request.state'} ne 'published') {
1790: if ($filetype eq 'sty') {
1791: $filecontents=&createnewsty();
1792: } elsif ($filetype eq 'js') {
1793: $filecontents=&createnewjs();
1794: } elsif ($filetype ne 'css' && $filetype ne 'txt' && $filetype ne 'tex') {
1795: $filecontents=&createnewhtml();
1796: }
1797: $env{'form.editmode'}='Edit'; #force edit mode
1798: }
1799: } else {
1800: unless ($env{'request.state'} eq 'published') {
1801: if ($filecontents=~/BEGIN LON-CAPA Internal/) {
1802: &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.'));
1803: }
1804: #
1805: # we are in construction space, see if edit mode forced
1806: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
1807: ['editmode']);
1808: }
1809: if (!$env{'form.editmode'} || $env{'form.viewmode'} || $env{'form.discardview'}) {
1810: if ($filetype eq 'html' || $filetype eq 'sty') {
1811: &Apache::structuretags::reset_problem_globals();
1812: $result = &Apache::lonxml::xmlparse($request,$target,
1813: $filecontents,'',%mystyle);
1814: # .html files may contain <problem> or <Task> need to clean
1815: # up if it did
1816: &Apache::structuretags::reset_problem_globals();
1817: &Apache::lonhomework::finished_parsing();
1818: } elsif ($filetype eq 'tex') {
1819: $result = &Apache::lontexconvert::converted(\$filecontents,
1820: $env{'form.texengine'});
1821: if ($env{'form.return_only_error_and_warning_counts'}) {
1822: $result = "$errorcount:$warningcount";
1823: }
1824: } else {
1825: $result = $filecontents;
1826: }
1827: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
1828: ['rawmode']);
1829: if ($env{'form.rawmode'}) { $result = $filecontents; }
1830: if (($env{'request.state'} eq 'construct') &&
1831: (($filetype eq 'css') || ($filetype eq 'js')) && ($ENV{'HTTP_REFERER'})) {
1832: if ($ENV{'HTTP_REFERER'} =~ m{^https?\://[^\/]+/priv/$LONCAPA::match_domain/$LONCAPA::match_username/[^\?]+\.(x?html?|swf)(|\?)[^\?]*$}) {
1833: $inhibit_menu = 1;
1834: }
1835: }
1836: if (($filetype ne 'html') &&
1837: (!$env{'form.return_only_error_and_warning_counts'}) &&
1838: (!$inhibit_menu)) {
1839: my $nochgview = 1;
1840: my $controls = '';
1841: if ($env{'request.state'} eq 'construct') {
1842: $controls = &Apache::loncommon::head_subbox(
1843: &Apache::loncommon::CSTR_pageheader()
1844: .&Apache::londefdef::edit_controls($nochgview));
1845: }
1846: if ($filetype ne 'sty' && $filetype ne 'tex') {
1847: $result =~ s/</</g;
1848: $result =~ s/>/>/g;
1849: $result = '<table class="LC_sty_begin">'.
1850: '<tr><td><b><pre>'.$result.
1851: '</pre></b></td></tr></table>';
1852: }
1853: my $brcrum;
1854: if ($env{'request.state'} eq 'construct') {
1855: $brcrum = [{'href' => &Apache::loncommon::authorspace($request->uri),
1856: 'text' => 'Authoring Space'},
1857: {'href' => '',
1858: 'text' => $breadcrumbtext}];
1859: } else {
1860: $brcrum = ''; # FIXME: Where are we?
1861: }
1862: my %options = ('bread_crumbs' => $brcrum,
1863: 'bgcolor' => '#FFFFFF');
1864: $result =
1865: &Apache::loncommon::start_page(undef,undef,\%options)
1866: .$controls
1867: .$result
1868: .&Apache::loncommon::end_page();
1869: }
1870: }
1871: }
1872:
1873: #
1874: # Edit action? Insert editing commands
1875: #
1876: unless (($env{'request.state'} eq 'published') || ($inhibit_menu)) {
1877: if ($env{'form.editmode'} && (!($env{'form.viewmode'})) && (!($env{'form.discardview'})))
1878: {
1879: my ($displayfile,$url,$symb,$itemtitle,$action);
1880: $displayfile=$request->uri;
1881: if ($request->uri =~ m{^/uploaded/}) {
1882: if ($env{'request.course.id'}) {
1883: if ($request->uri =~ m{^\Q/uploaded/$cdom/$cnum/supplemental/\E}) {
1884: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
1885: ['folderpath','title']);
1886: } elsif ($request->uri =~ m{^\Q/uploaded/$cdom/$cnum/portfolio/syllabus/\E(.+)$}) {
1887: my $filename = $1;
1888: if ($1 eq 'loncapa.html') {
1889: $displayfile = &mt('Syllabus (minimal template)');
1890: $action = $request->uri.'?forceedit=1';
1891: } else {
1892: $displayfile = &mt('Syllabus file: [_1]',$1);
1893: }
1894: $itemtitle = &mt('Syllabus');
1895: }
1896: }
1897: unless ($itemtitle) {
1898: ($symb,$itemtitle,$displayfile) =
1899: &get_courseupload_hierarchy($request->uri,
1900: $env{'form.folderpath'},
1901: $env{'form.title'});
1902: }
1903: } else {
1904: $displayfile=~s/^\/[^\/]*//;
1905: }
1906:
1907: my ($edit_info, $add_to_onload, $add_to_onresize)=
1908: &inserteditinfo($filecontents,$filetype,$displayfile,$symb,
1909: $itemtitle,$env{'form.folderpath'},$request->uri,$action);
1910:
1911: my %options =
1912: ('add_entries' =>
1913: {'onresize' => $add_to_onresize,
1914: 'onload' => $add_to_onload, });
1915: my $header;
1916: if ($env{'request.state'} eq 'construct') {
1917: $options{'bread_crumbs'} = [{
1918: 'href' => &Apache::loncommon::authorspace($request->uri),
1919: 'text' => 'Authoring Space'},
1920: {'href' => '',
1921: 'text' => $breadcrumbtext}];
1922: $header = &Apache::loncommon::head_subbox(
1923: &Apache::loncommon::CSTR_pageheader());
1924: }
1925: my $js =
1926: &Apache::edit::js_change_detection().
1927: &Apache::loncommon::resize_textarea_js();
1928: my $start_page = &Apache::loncommon::start_page(undef,$js,
1929: \%options);
1930: $result = $start_page
1931: .$header
1932: .&Apache::lonxml::message_location()
1933: .$edit_info
1934: .&Apache::loncommon::end_page();
1935: }
1936: }
1937: if ($filetype eq 'html') { &writeallows($request->uri); }
1938:
1939: &Apache::lonxml::add_messages(\$result);
1940: $request->print($result);
1941:
1942: return OK;
1943: }
1944:
1945: sub display_title {
1946: my $result;
1947: if ($env{'request.state'} eq 'construct') {
1948: my $title=&Apache::lonnet::gettitle();
1949: if (!defined($title) || $title eq '') {
1950: $title = $env{'request.filename'};
1951: $title = substr($title, rindex($title, '/') + 1);
1952: }
1953: $result = "<script type='text/javascript'>top.document.title = '$title - LON-CAPA "
1954: .&mt('Authoring Space')."';</script>";
1955: }
1956: return $result;
1957: }
1958:
1959: sub get_courseupload_hierarchy {
1960: my ($url,$folderpath,$title) = @_;
1961: my ($symb,$itemtitle,$displaypath);
1962: if ($env{'request.course.id'}) {
1963: if ($folderpath =~ /^supplemental/) {
1964: my @folders = split(/\&/,$folderpath);
1965: my @pathitems;
1966: while (@folders) {
1967: my $folder=shift(@folders);
1968: my $foldername=shift(@folders);
1969: $foldername =~ s/\:(\d*)\:(\w*)\:(\w*):(\d*)\:?(\d*)$//;
1970: push(@pathitems,&unescape($foldername));
1971: }
1972: if ($title) {
1973: push(@pathitems,&unescape($title));
1974: }
1975: $displaypath = join(' » ',@pathitems);
1976: } else {
1977: $symb = &Apache::lonnet::symbread($url);
1978: my ($map,$id,$res)=&Apache::lonnet::decode_symb($symb);
1979: my $navmap=Apache::lonnavmaps::navmap->new;
1980: if (ref($navmap)) {
1981: my $res = $navmap->getBySymb($symb);
1982: if (ref($res)) {
1983: my @pathitems =
1984: &Apache::loncommon::get_folder_hierarchy($navmap,$map,1);
1985: $itemtitle = $res->compTitle();
1986: push(@pathitems,$itemtitle);
1987: $displaypath = join(' » ',@pathitems);
1988: }
1989: }
1990: }
1991: }
1992: return ($symb,$itemtitle,$displaypath);
1993: }
1994:
1995: sub debug {
1996: if ($Apache::lonxml::debug eq "1") {
1997: $|=1;
1998: my $request=$Apache::lonxml::request;
1999: if (!$request) {
2000: eval { $request=Apache->request; };
2001: }
2002: if (!$request) {
2003: eval { $request=Apache2::RequestUtil->request; };
2004: }
2005: $request->print('<font size="-2"><pre>DEBUG:'.&HTML::Entities::encode($_[0],'<>&"')."</pre></font>\n");
2006: #&Apache::lonnet::logthis($_[0]);
2007: }
2008: }
2009:
2010: sub show_error_warn_msg {
2011: if (($env{'request.filename'} eq
2012: $Apache::lonnet::perlvar{'lonDocRoot'}.'/res/lib/templates/simpleproblem.problem') &&
2013: (&Apache::lonnet::allowed('mdc',$env{'request.course.id'}))) {
2014: return 1;
2015: }
2016: return (($Apache::lonxml::debug eq 1) ||
2017: ($env{'request.state'} eq 'construct') ||
2018: ($Apache::lonhomework::browse eq 'F'
2019: &&
2020: $env{'form.show_errors'} eq 'on'));
2021: }
2022:
2023: sub error {
2024: my @errors = @_;
2025:
2026: $errorcount++;
2027:
2028: $Apache::lonxml::internal_error=1;
2029:
2030: if (defined($Apache::inputtags::part)) {
2031: if ( @Apache::inputtags::response ) {
2032: push(@errors,
2033: &mt("This error occurred while processing response [_1] in part [_2]",
2034: $Apache::inputtags::response[-1],
2035: $Apache::inputtags::part));
2036: } else {
2037: push(@errors,
2038: &mt("This error occurred while processing part [_1]",
2039: $Apache::inputtags::part));
2040: }
2041: }
2042:
2043: if ( &show_error_warn_msg() ) {
2044: # If printing in construction space, put the error inside <pre></pre>
2045: push(@Apache::lonxml::error_messages,
2046: $Apache::lonxml::warnings_error_header
2047: .'<div class="LC_error">'
2048: .'<b>'.&mt('ERROR:').' </b>'.join("<br />\n",@errors)
2049: ."</div>\n");
2050: $Apache::lonxml::warnings_error_header='';
2051: } else {
2052: my $errormsg;
2053: my ($symb)=&Apache::lonnet::symbread();
2054: if ( !$symb ) {
2055: #public or browsers
2056: $errormsg=&mt("An error occurred while processing this resource. The author has been notified.");
2057: }
2058: my $host=$Apache::lonnet::perlvar{'lonHostID'};
2059: push(@errors,
2060: &mt("The error occurred on host [_1]",
2061: "<tt>$host</tt>"));
2062:
2063: my $msg = join('<br />', @errors);
2064:
2065: #notify author
2066: &Apache::lonmsg::author_res_msg($env{'request.filename'},$msg);
2067: #notify course
2068: if ( $symb && $env{'request.course.id'} ) {
2069: my $cnum=$env{'course.'.$env{'request.course.id'}.'.num'};
2070: my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
2071: my (undef,%users)=&Apache::lonmsg::decide_receiver(undef,0,1,1,1);
2072: my $declutter=&Apache::lonnet::declutter($env{'request.filename'});
2073: my $baseurl = &Apache::lonnet::clutter($declutter);
2074: my @userlist;
2075: foreach (keys(%users)) {
2076: my ($user,$domain) = split(/:/, $_);
2077: push(@userlist,"$user:$domain");
2078: my $key=$declutter.'_'.$user.'_'.$domain;
2079: my %lastnotified=&Apache::lonnet::get('nohist_xmlerrornotifications',
2080: [$key],
2081: $cdom,$cnum);
2082: my $now=time;
2083: if ($now-$lastnotified{$key}>86400) {
2084: my $title = &Apache::lonnet::gettitle($symb);
2085: my $sentmessage;
2086: &Apache::lonmsg::user_normal_msg($user,$domain,
2087: "Error [$title]",$msg,'',$baseurl,'','',
2088: \$sentmessage,$symb,$title,1);
2089: &Apache::lonnet::put('nohist_xmlerrornotifications',
2090: {$key => $now},
2091: $cdom,$cnum);
2092: }
2093: }
2094: if ($env{'request.role.adv'}) {
2095: $errormsg=&mt("An error occurred while processing this resource. The course personnel ([_1]) and the author have been notified.",join(', ',@userlist));
2096: } else {
2097: $errormsg=&mt("An error occurred while processing this resource. The instructor has been notified.");
2098: }
2099: }
2100: push(@Apache::lonxml::error_messages,"<span class=\"LC_warning\">$errormsg</span><br />");
2101: }
2102: }
2103:
2104: sub warning {
2105: $warningcount++;
2106:
2107: if ($env{'form.grade_target'} ne 'tex') {
2108: if ( &show_error_warn_msg() ) {
2109: push(@Apache::lonxml::warning_messages,
2110: $Apache::lonxml::warnings_error_header
2111: .'<div class="LC_warning">'
2112: .&mt('[_1]W[_2]ARNING','<b>','</b>')."<b>:</b> ".join('<br />',@_)
2113: ."</div>\n"
2114: );
2115: $Apache::lonxml::warnings_error_header='';
2116: }
2117: }
2118: }
2119:
2120: sub info {
2121: if ($env{'form.grade_target'} ne 'tex'
2122: && $env{'request.state'} eq 'construct') {
2123: push(@Apache::lonxml::info_messages,join('<br />',@_)."<br />\n");
2124: }
2125: }
2126:
2127: sub message_location {
2128: return '__LONCAPA_INTERNAL_MESSAGE_LOCATION__';
2129: }
2130:
2131: sub add_messages {
2132: my ($msg)=@_;
2133: my $result=join(' ',
2134: @Apache::lonxml::info_messages,
2135: @Apache::lonxml::error_messages,
2136: @Apache::lonxml::warning_messages);
2137: undef(@Apache::lonxml::info_messages);
2138: undef(@Apache::lonxml::error_messages);
2139: undef(@Apache::lonxml::warning_messages);
2140: $$msg=~s/__LONCAPA_INTERNAL_MESSAGE_LOCATION__/$result/;
2141: $$msg=~s/__LONCAPA_INTERNAL_MESSAGE_LOCATION__//g;
2142: }
2143:
2144: sub get_param {
2145: my ($param,$parstack,$safeeval,$context,$case_insensitive, $noelide) = @_;
2146:
2147: if ( ! $context ) { $context = -1; }
2148: my $args ='';
2149: if ( $#$parstack > (-2-$context) ) { $args=$$parstack[$context]; }
2150: if ( ! $Apache::lonxml::usestyle ) {
2151: $args=$Apache::lonxml::style_values.$args;
2152: }
2153:
2154:
2155: if ($noelide) {
2156: # $args =~ s/\\'/'/g;
2157: $args =~ s/'\$/'\\\$/g;
2158: }
2159:
2160: if ( ! $args ) { return undef; }
2161: if ( $case_insensitive ) {
2162: if ($args =~ s/(my (?:.*))(\$\Q$param\E[,\)])/$1.lc($2)/ei) {
2163:
2164: return &Apache::run::run("{$args;".'return $'.$param.'}',
2165: $safeeval); #'
2166: } else {
2167: return undef;
2168: }
2169: } else {
2170: if ( $args =~ /my .*\$\Q$param\E[,\)]/ ) {
2171:
2172: return &Apache::run::run("{$args;".'return $'.$param.'}',
2173: $safeeval); #'
2174: } else {
2175: return undef;
2176: }
2177: }
2178: }
2179:
2180: sub get_param_var {
2181: my ($param,$parstack,$safeeval,$context,$case_insensitive) = @_;
2182: if ( ! $context ) { $context = -1; }
2183: my $args ='';
2184: if ( $#$parstack > (-2-$context) ) { $args=$$parstack[$context]; }
2185: if ( ! $Apache::lonxml::usestyle ) {
2186: $args=$Apache::lonxml::style_values.$args;
2187: }
2188: &Apache::lonxml::debug("Args are $args param is $param");
2189: if ($case_insensitive) {
2190: if (! ($args=~s/(my (?:.*))(\$\Q$param\E[,\)])/$1.lc($2)/ei)) {
2191: return undef;
2192: }
2193: } elsif ( $args !~ /my .*\$\Q$param\E[,\)]/ ) { return undef; }
2194: my $value=&Apache::run::run("{$args;".'return $'.$param.'}',$safeeval); #'
2195: &Apache::lonxml::debug("first run is $value");
2196: if ($value =~ /^[\$\@\%][a-zA-Z_]\w*$/) {
2197: &Apache::lonxml::debug("doing second");
2198: my @result=&Apache::run::run("return $value",$safeeval,1);
2199: if (!defined($result[0])) {
2200: return $value
2201: } else {
2202: if (wantarray) { return @result; } else { return $result[0]; }
2203: }
2204: } else {
2205: return $value;
2206: }
2207: }
2208:
2209: sub register_insert_xml {
2210: my $parser = HTML::LCParser->new($Apache::lonnet::perlvar{'lonTabDir'}
2211: .'/insertlist.xml');
2212: my ($tagnum,$in_help)=(0,0);
2213: my @alltags;
2214: my $tag;
2215: while (my $token = $parser->get_token()) {
2216: if ($token->[0] eq 'S') {
2217: my $key;
2218: if ($token->[1] eq 'tag') {
2219: $tag = $token->[2]{'name'};
2220: if (defined($tag)) {
2221: $insertlist{$tagnum.'.tag'} = $tag;
2222: $insertlist{$tag.'.num'} = $tagnum;
2223: push(@alltags,$tag);
2224: }
2225: } elsif ($in_help && $token->[1] eq 'file') {
2226: $key = $tag.'.helpfile';
2227: } elsif ($in_help && $token->[1] eq 'description') {
2228: $key = $tag.'.helpdesc';
2229: } elsif ($token->[1] eq 'description' ||
2230: $token->[1] eq 'color' ||
2231: $token->[1] eq 'show' ) {
2232: $key = $tag.'.'.$token->[1];
2233: } elsif ($token->[1] eq 'insert_sub') {
2234: $key = $tag.'.function';
2235: } elsif ($token->[1] eq 'help') {
2236: $in_help=1;
2237: } elsif ($token->[1] eq 'allow') {
2238: $key = $tag.'.allow';
2239: }
2240: if (defined($key)) {
2241: $insertlist{$key} = $parser->get_text();
2242: $insertlist{$key} =~ s/(^\s*|\s*$ )//gx;
2243: }
2244: } elsif ($token->[0] eq 'E') {
2245: if ($token->[1] eq 'tag') {
2246: undef($tag);
2247: $tagnum++;
2248: } elsif ($token->[1] eq 'help') {
2249: undef($in_help);
2250: }
2251: }
2252: }
2253:
2254: # parse the allows and ignore tags set to <show>no</show>
2255: foreach my $tag (@alltags) {
2256: next if (!exists($insertlist{$tag.'.allow'}));
2257: my $allow = $insertlist{$tag.'.allow'};
2258: foreach my $element (split(',',$allow)) {
2259: $element =~ s/(^\s*|\s*$ )//gx;
2260: if (!exists($insertlist{$element.'.show'})
2261: || $insertlist{$element.'.show'} ne 'no') {
2262: push(@{ $insertlist{$tag.'.which'} },$element);
2263: }
2264: }
2265: }
2266: }
2267:
2268: sub register_insert {
2269: return ®ister_insert_xml(@_);
2270: # &dump_insertlist('2');
2271: }
2272:
2273: sub dump_insertlist {
2274: my ($ext) = @_;
2275: open(XML,">/tmp/insertlist.xml.$ext");
2276: print XML ("<insertlist>");
2277: my $i=0;
2278:
2279: while (exists($insertlist{"$i.tag"})) {
2280: my $tag = $insertlist{"$i.tag"};
2281: print XML ("
2282: \t<tag name=\"$tag\">");
2283: if (defined($insertlist{"$tag.description"})) {
2284: print XML ("
2285: \t\t<description>".$insertlist{"$tag.description"}."</description>");
2286: }
2287: if (defined($insertlist{"$tag.color"})) {
2288: print XML ("
2289: \t\t<color>".$insertlist{"$tag.color"}."</color>");
2290: }
2291: if (defined($insertlist{"$tag.function"})) {
2292: print XML ("
2293: \t\t<insert_sub>".$insertlist{"$tag.function"}."</insert_sub>");
2294: }
2295: if (defined($insertlist{"$tag.show"})
2296: && $insertlist{"$tag.show"} ne 'yes') {
2297: print XML ("
2298: \t\t<show>".$insertlist{"$tag.show"}."</show>");
2299: }
2300: if (defined($insertlist{"$tag.helpfile"})) {
2301: print XML ("
2302: \t\t<help>
2303: \t\t\t<file>".$insertlist{"$tag.helpfile"}."</file>");
2304: if ($insertlist{"$tag.helpdesc"} ne '') {
2305: print XML ("
2306: \t\t\t<description>".$insertlist{"$tag.helpdesc"}."</description>");
2307: }
2308: print XML ("
2309: \t\t</help>");
2310: }
2311: if (defined($insertlist{"$tag.which"})) {
2312: print XML ("
2313: \t\t<allow>".join(',',sort(@{ $insertlist{"$tag.which"} }))."</allow>");
2314: }
2315: print XML ("
2316: \t</tag>");
2317: $i++;
2318: }
2319: print XML ("\n</insertlist>\n");
2320: close(XML);
2321: }
2322:
2323: sub description {
2324: my ($token)=@_;
2325: my $tag = &get_tag($token);
2326: return $insertlist{$tag.'.description'};
2327: }
2328:
2329: # Returns a list containing the help file, and the description
2330: sub helpinfo {
2331: my ($token)=@_;
2332: my $tag = &get_tag($token);
2333: return ($insertlist{$tag.'.helpfile'}, &mt($insertlist{$tag.'.helpdesc'}));
2334: }
2335:
2336: sub get_tag {
2337: my ($token)=@_;
2338: my $tagnum;
2339: my $tag=$token->[1];
2340: foreach my $namespace (reverse(@Apache::lonxml::namespace)) {
2341: my $testtag = $namespace.'::'.$tag;
2342: $tagnum = $insertlist{"$testtag.num"};
2343: last if (defined($tagnum));
2344: }
2345: if (!defined($tagnum)) {
2346: $tagnum = $Apache::lonxml::insertlist{"$tag.num"};
2347: }
2348: return $insertlist{"$tagnum.tag"};
2349: }
2350:
2351: ############################################################
2352: # PDF-FORM-METHODS
2353:
2354: =pod
2355:
2356: =item &print_pdf_radiobutton(fieldname, value)
2357:
2358: Returns a latexline to generate a PDF-Form-Radiobutton.
2359: Note: Radiobuttons with equal names are automaticly grouped
2360: in a selection-group.
2361:
2362: $fieldname: PDF internalname of the radiobutton(group)
2363: $value: Value of radiobutton
2364:
2365: =cut
2366: sub print_pdf_radiobutton {
2367: my ($fieldname, $value) = @_;
2368: return '\radioButton[\symbolchoice{circle}]{'
2369: .$fieldname.'}{10bp}{10bp}{'.$value.'}';
2370: }
2371:
2372:
2373: =pod
2374:
2375: =item &print_pdf_start_combobox(fieldname)
2376:
2377: Starts a latexline to generate a PDF-Form-Combobox with text.
2378:
2379: $fieldname: PDF internal name of the Combobox
2380:
2381: =cut
2382: sub print_pdf_start_combobox {
2383: my $result;
2384: my ($fieldName) = @_;
2385: $result .= '\begin{tabularx}{\textwidth}{p{2.5cm}X}'."\n";
2386: $result .= '\comboBox[]{'.$fieldName.'}{2.3cm}{14bp}{'; #
2387:
2388: return $result;
2389: }
2390:
2391:
2392: =pod
2393:
2394: =item &print_pdf_add_combobox_option(options)
2395:
2396: Generates a latexline to add Options to a PDF-Form-ComboBox.
2397:
2398: $option: PDF internal name of the Combobox-Option
2399:
2400: =cut
2401: sub print_pdf_add_combobox_option {
2402:
2403: my $result;
2404: my ($option) = @_;
2405:
2406: $result .= '('.$option.')';
2407:
2408: return $result;
2409: }
2410:
2411:
2412: =pod
2413:
2414: =item &print_pdf_end_combobox(text) {
2415:
2416: Returns latexcode to end a PDF-Form-Combobox with text.
2417:
2418: =cut
2419: sub print_pdf_end_combobox {
2420: my $result;
2421: my ($text) = @_;
2422:
2423: $result .= '}&'.$text."\\\\\n";
2424: $result .= '\end{tabularx}' . "\n";
2425: $result .= '\hspace{2mm}' . "\n";
2426: return $result;
2427: }
2428:
2429:
2430: =pod
2431:
2432: =item &print_pdf_hiddenField(fieldname, user, domain)
2433:
2434: Returns a latexline to generate a PDF-Form-hiddenField with userdata.
2435:
2436: $fieldname label for hiddentextfield
2437: $user: name of user
2438: $domain: domain of user
2439:
2440: =cut
2441: sub print_pdf_hiddenfield {
2442: my $result;
2443: my ($fieldname, $user, $domain) = @_;
2444:
2445: $result .= '\textField [\F{\FHidden}\F{-\FPrint}\V{'.$domain.'&'.$user.'}]{'.$fieldname.'}{0in}{0in}'."\n";
2446:
2447: return $result;
2448: }
2449:
2450: 1;
2451: __END__
2452:
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