1: # The LearningOnline Network with CAPA
2: # XML Parser Module
3: #
4: # $Id: lonxml.pm,v 1.551 2014/12/15 17:39:24 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 $startredirection = $Apache::lonxml::redirection;
372: while ( $#$pars > -1 ) {
373: while ($token = $$pars['-1']->get_token) {
374: if (($token->[0] eq 'T') || ($token->[0] eq 'C') ) {
375: if ($metamode<1) {
376: my $text=$token->[1];
377: if ($token->[0] eq 'C' && $target eq 'tex') {
378: $text = '';
379: # $text = '%'.$text."\n";
380: }
381: $result.=$text;
382: }
383: } elsif (($token->[0] eq 'D')) {
384: if ($metamode<1 && $target eq 'web') {
385: my $text=$token->[1];
386: $result.=$text;
387: }
388: } elsif ($token->[0] eq 'PI') {
389: if ($metamode<1 && $target eq 'web') {
390: $result=$token->[2];
391: }
392: } elsif ($token->[0] eq 'S') {
393: # add tag to stack
394: push (@$stack,$token->[1]);
395: # add parameters list to another stack
396: push (@$parstack,&parstring($token));
397: &increasedepth($token);
398: if ($Apache::lonxml::usestyle &&
399: exists($$style_for_target{$token->[1]})) {
400: $Apache::lonxml::usestyle=0;
401: my $string=$$style_for_target{$token->[1]}.
402: '<LONCAPA_INTERNAL_TURN_STYLE_ON />';
403: &Apache::lonxml::newparser($pars,\$string);
404: $Apache::lonxml::style_values=$$parstack[-1];
405: $Apache::lonxml::style_end_values=$$parstack[-1];
406: } else {
407: $result = &callsub("start_$token->[1]", $target, $token, $stack,
408: $parstack, $pars, $safeeval, $style_for_target);
409: }
410: } elsif ($token->[0] eq 'E') {
411: if ($Apache::lonxml::usestyle &&
412: exists($$style_for_target{'/'."$token->[1]"})) {
413: $Apache::lonxml::usestyle=0;
414: my $string=$$style_for_target{'/'.$token->[1]}.
415: '<LONCAPA_INTERNAL_TURN_STYLE_ON end="'.$token->[1].'" />';
416: &Apache::lonxml::newparser($pars,\$string);
417: $Apache::lonxml::style_values=$Apache::lonxml::style_end_values;
418: $Apache::lonxml::style_end_values='';
419: $dontpop=1;
420: } else {
421: #clear out any tags that didn't end
422: while ($token->[1] ne $$stack['-1'] && ($#$stack > -1)) {
423: my $lasttag=$$stack[-1];
424: if ($token->[1] =~ /^\Q$lasttag\E$/i) {
425: &Apache::lonxml::warning(&mt('Using tag [_1] on line [_2] as end tag to [_3]','</'.$token->[1].'>','.$token->[3].','<'.$$stack[-1].'>'));
426: last;
427: } else {
428: &Apache::lonxml::warning(&mt('Found tag [_1] on line [_2] when looking for [_3] in file.','</'.$token->[1].'>',$token->[3],'</'.$$stack[-1].'>'));
429: &end_tag($stack,$parstack,$token);
430: }
431: }
432: $result = &callsub("end_$token->[1]", $target, $token, $stack,
433: $parstack, $pars,$safeeval, $style_for_target);
434: }
435: } else {
436: &Apache::lonxml::error("Unknown token event :$token->[0]:$token->[1]:");
437: }
438: #evaluate variable refs in result
439: if ($Apache::lonxml::post_evaluate &&$result ne "") {
440: my $extras;
441: if (!$Apache::lonxml::usestyle) {
442: $extras=$Apache::lonxml::style_values;
443: }
444: if ( $#$parstack > -1 ) {
445: $result=&Apache::run::evaluate($result,$safeeval,$extras.$$parstack[-1]);
446: } else {
447: $result= &Apache::run::evaluate($result,$safeeval,$extras);
448: }
449: }
450: $Apache::lonxml::post_evaluate=1;
451:
452: if (($token->[0] eq 'T') || ($token->[0] eq 'C') || ($token->[0] eq 'D') ) {
453: #Style file definitions should be correct
454: if ($target eq 'tex' && ($Apache::lonxml::usestyle)) {
455: $result=&latex_special_symbols($result);
456: }
457: }
458:
459: if ($Apache::lonxml::redirection) {
460: $Apache::lonxml::outputstack['-1'] .= $result;
461: } else {
462: $finaloutput.=$result;
463: }
464: $result = '';
465:
466: if ($token->[0] eq 'E' && !$dontpop) {
467: &end_tag($stack,$parstack,$token);
468: }
469: $dontpop=0;
470: }
471: if ($#$pars > -1) {
472: pop @$pars;
473: pop @Apache::lonxml::pwd;
474: }
475: }
476:
477: # if ($target eq 'meta') {
478: # $finaloutput.=&endredirection;
479: # }
480:
481: if ( $start && $target eq 'grade') { &endredirection(); }
482: if ( $Apache::lonxml::redirection > $startredirection) {
483: while ($Apache::lonxml::redirection > $startredirection) {
484: $finaloutput .= &endredirection();
485: }
486: }
487: if (($ENV{'QUERY_STRING'}) && ($target eq 'web')) {
488: $finaloutput=&afterburn($finaloutput);
489: }
490: if ($target eq 'modified') {
491: # if modfied, handle startpart and endpart
492: $finaloutput=~s/\<startpartmarker[^\>]*\>(.*)\<endpartmarker[^\>]*\>/<part>$1<\/part>/gs;
493: }
494: return $finaloutput;
495: }
496:
497: ##
498: ## Looks to see if there is a subroutine defined for this tag. If so, call it,
499: ## otherwise do not call it as we do not know what it is.
500: ##
501: sub callsub {
502: my ($sub,$target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
503: my $currentstring='';
504: my $nodefault;
505: {
506: my $sub1;
507: no strict 'refs';
508: my $tag=$token->[1];
509: # get utterly rid of extended html tags
510: if ($tag=~/^x\-/i) { return ''; }
511: my $space=$Apache::lonxml::alltags{$tag}[-1];
512: if (!$space) {
513: $tag=~tr/A-Z/a-z/;
514: $sub=~tr/A-Z/a-z/;
515: $space=$Apache::lonxml::alltags{$tag}[-1]
516: }
517:
518: my $deleted=0;
519: if (($token->[0] eq 'S') && ($target eq 'modified')) {
520: $deleted=&Apache::edit::handle_delete($space,$target,$token,$tagstack,
521: $parstack,$parser,$safeeval,
522: $style);
523: }
524: if (!$deleted) {
525: if ($space) {
526: #&Apache::lonxml::debug("Calling sub $sub in $space $metamode");
527: $sub1="$space\:\:$sub";
528: ($currentstring,$nodefault) = &$sub1($target,$token,$tagstack,
529: $parstack,$parser,$safeeval,
530: $style);
531: } else {
532: if ($target eq 'tex') {
533: # throw away tag name
534: return '';
535: }
536: #&Apache::lonxml::debug("NOT Calling sub $sub in $space $metamode");
537: if ($metamode <1) {
538: if (defined($token->[4]) && ($metamode < 1)) {
539: $currentstring = $token->[4];
540: } else {
541: $currentstring = $token->[2];
542: }
543: }
544: }
545: # &Apache::lonxml::debug("nodefalt:$nodefault:");
546: if ($currentstring eq '' && $nodefault eq '') {
547: if ($target eq 'edit') {
548: #&Apache::lonxml::debug("doing default edit for $token->[1]");
549: if ($token->[0] eq 'S') {
550: $currentstring = &Apache::edit::tag_start($target,$token);
551: } elsif ($token->[0] eq 'E') {
552: $currentstring = &Apache::edit::tag_end($target,$token);
553: }
554: }
555: }
556: if ($target eq 'modified' && $nodefault eq '') {
557: if ($currentstring eq '') {
558: if ($token->[0] eq 'S') {
559: $currentstring = $token->[4];
560: } elsif ($token->[0] eq 'E') {
561: $currentstring = $token->[2];
562: } else {
563: $currentstring = $token->[2];
564: }
565: }
566: if ($token->[0] eq 'S') {
567: $currentstring.=&Apache::edit::handle_insert();
568: } elsif ($token->[0] eq 'E') {
569: $currentstring.=&Apache::edit::handle_insertafter($token->[1]);
570: }
571: }
572: }
573: use strict 'refs';
574: }
575: return $currentstring;
576: }
577:
578: {
579: my %state;
580:
581: sub init_state {
582: undef(%state);
583: }
584:
585: sub set_state {
586: my ($key,$value) = @_;
587: $state{$key} = $value;
588: return $value;
589: }
590: sub get_state {
591: my ($key) = @_;
592: return $state{$key};
593: }
594: }
595:
596: sub setup_globals {
597: my ($request,$target)=@_;
598: $Apache::lonxml::request=$request;
599: $errorcount=0;
600: $warningcount=0;
601: $Apache::lonxml::internal_error=0;
602: $Apache::lonxml::default_homework_loaded=0;
603: $Apache::lonxml::usestyle=1;
604: &init_counter();
605: &clear_bubble_lines_for_part();
606: &init_state();
607: &set_state('target',$target);
608: @Apache::lonxml::pwd=();
609: @Apache::lonxml::extlinks=();
610: @script_var_displays=();
611: @Apache::lonxml::ssi_info=();
612: $Apache::lonxml::post_evaluate=1;
613: $Apache::lonxml::warnings_error_header='';
614: $Apache::lonxml::substitute_LaTeX_symbols = 1;
615: if ($target eq 'meta') {
616: $Apache::lonxml::redirection = 0;
617: $Apache::lonxml::metamode = 1;
618: $Apache::lonxml::evaluate = 1;
619: $Apache::lonxml::import = 0;
620: } elsif ($target eq 'answer') {
621: $Apache::lonxml::redirection = 0;
622: $Apache::lonxml::metamode = 1;
623: $Apache::lonxml::evaluate = 1;
624: $Apache::lonxml::import = 1;
625: } elsif ($target eq 'grade') {
626: &startredirection(); #ended in inner_xmlparse on exit
627: $Apache::lonxml::metamode = 0;
628: $Apache::lonxml::evaluate = 1;
629: $Apache::lonxml::import = 1;
630: } elsif ($target eq 'modified') {
631: $Apache::lonxml::redirection = 0;
632: $Apache::lonxml::metamode = 0;
633: $Apache::lonxml::evaluate = 0;
634: $Apache::lonxml::import = 0;
635: } elsif ($target eq 'edit') {
636: $Apache::lonxml::redirection = 0;
637: $Apache::lonxml::metamode = 0;
638: $Apache::lonxml::evaluate = 0;
639: $Apache::lonxml::import = 0;
640: } elsif ($target eq 'analyze') {
641: $Apache::lonxml::redirection = 0;
642: $Apache::lonxml::metamode = 0;
643: $Apache::lonxml::evaluate = 1;
644: $Apache::lonxml::import = 1;
645: } else {
646: $Apache::lonxml::redirection = 0;
647: $Apache::lonxml::metamode = 0;
648: $Apache::lonxml::evaluate = 1;
649: $Apache::lonxml::import = 1;
650: }
651: }
652:
653: sub init_safespace {
654: my ($target,$safeeval,$safehole,$safeinit) = @_;
655: $safeeval->reval('use LaTeX::Table;');
656: $safeeval->deny_only(':dangerous');
657: $safeeval->reval('use LONCAPA::LCMathComplex;');
658: $safeeval->permit_only(":default");
659: $safeeval->permit("entereval");
660: $safeeval->permit(":base_math");
661: $safeeval->permit("sort");
662: $safeeval->permit("time");
663: $safeeval->permit("caller");
664: $safeeval->deny("rand");
665: $safeeval->deny("srand");
666: $safeeval->deny(":base_io");
667: $safehole->wrap(\&Apache::scripttag::xmlparse,$safeeval,'&xmlparse');
668: $safehole->wrap(\&Apache::outputtags::multipart,$safeeval,'&multipart');
669: $safehole->wrap(\&Apache::lonnet::EXT,$safeeval,'&EXT');
670: $safehole->wrap(\&Apache::chemresponse::chem_standard_order,$safeeval,
671: '&chem_standard_order');
672: $safehole->wrap(\&Apache::response::check_status,$safeeval,'&check_status');
673: $safehole->wrap(\&Apache::response::implicit_multiplication,$safeeval,'&implicit_multiplication');
674:
675: $safehole->wrap(\&Apache::lonmaxima::maxima_eval,$safeeval,'&maxima_eval');
676: $safehole->wrap(\&Apache::lonmaxima::maxima_check,$safeeval,'&maxima_check');
677: $safehole->wrap(\&Apache::lonmaxima::maxima_cas_formula_fix,$safeeval,
678: '&maxima_cas_formula_fix');
679:
680: $safehole->wrap(\&Apache::lonr::r_eval,$safeeval,'&r_eval');
681: $safehole->wrap(\&Apache::lonr::Rentry,$safeeval,'&Rentry');
682: $safehole->wrap(\&Apache::lonr::Rarray,$safeeval,'&Rarray');
683: $safehole->wrap(\&Apache::lonr::r_check,$safeeval,'&r_check');
684: $safehole->wrap(\&Apache::lonr::r_cas_formula_fix,$safeeval,
685: '&r_cas_formula_fix');
686:
687: $safehole->wrap(\&Apache::caparesponse::capa_formula_fix,$safeeval,
688: '&capa_formula_fix');
689:
690: $safehole->wrap(\&Apache::lonlocal::locallocaltime,$safeeval,
691: '&locallocaltime');
692:
693: $safehole->wrap(\&Math::Cephes::asin,$safeeval,'&asin');
694: $safehole->wrap(\&Math::Cephes::acos,$safeeval,'&acos');
695: $safehole->wrap(\&Math::Cephes::atan,$safeeval,'&atan');
696: $safehole->wrap(\&Math::Cephes::sinh,$safeeval,'&sinh');
697: $safehole->wrap(\&Math::Cephes::cosh,$safeeval,'&cosh');
698: $safehole->wrap(\&Math::Cephes::tanh,$safeeval,'&tanh');
699: $safehole->wrap(\&Math::Cephes::asinh,$safeeval,'&asinh');
700: $safehole->wrap(\&Math::Cephes::acosh,$safeeval,'&acosh');
701: $safehole->wrap(\&Math::Cephes::atanh,$safeeval,'&atanh');
702: $safehole->wrap(\&Math::Cephes::erf,$safeeval,'&erf');
703: $safehole->wrap(\&Math::Cephes::erfc,$safeeval,'&erfc');
704: $safehole->wrap(\&Math::Cephes::j0,$safeeval,'&j0');
705: $safehole->wrap(\&Math::Cephes::j1,$safeeval,'&j1');
706: $safehole->wrap(\&Math::Cephes::jn,$safeeval,'&jn');
707: $safehole->wrap(\&Math::Cephes::jv,$safeeval,'&jv');
708: $safehole->wrap(\&Math::Cephes::y0,$safeeval,'&y0');
709: $safehole->wrap(\&Math::Cephes::y1,$safeeval,'&y1');
710: $safehole->wrap(\&Math::Cephes::yn,$safeeval,'&yn');
711: $safehole->wrap(\&Math::Cephes::yv,$safeeval,'&yv');
712:
713: $safehole->wrap(\&Math::Cephes::bdtr ,$safeeval,'&bdtr' );
714: $safehole->wrap(\&Math::Cephes::bdtrc ,$safeeval,'&bdtrc' );
715: $safehole->wrap(\&Math::Cephes::bdtri ,$safeeval,'&bdtri' );
716: $safehole->wrap(\&Math::Cephes::btdtr ,$safeeval,'&btdtr' );
717: $safehole->wrap(\&Math::Cephes::chdtr ,$safeeval,'&chdtr' );
718: $safehole->wrap(\&Math::Cephes::chdtrc,$safeeval,'&chdtrc');
719: $safehole->wrap(\&Math::Cephes::chdtri,$safeeval,'&chdtri');
720: $safehole->wrap(\&Math::Cephes::fdtr ,$safeeval,'&fdtr' );
721: $safehole->wrap(\&Math::Cephes::fdtrc ,$safeeval,'&fdtrc' );
722: $safehole->wrap(\&Math::Cephes::fdtri ,$safeeval,'&fdtri' );
723: $safehole->wrap(\&Math::Cephes::gdtr ,$safeeval,'&gdtr' );
724: $safehole->wrap(\&Math::Cephes::gdtrc ,$safeeval,'&gdtrc' );
725: $safehole->wrap(\&Math::Cephes::nbdtr ,$safeeval,'&nbdtr' );
726: $safehole->wrap(\&Math::Cephes::nbdtrc,$safeeval,'&nbdtrc');
727: $safehole->wrap(\&Math::Cephes::nbdtri,$safeeval,'&nbdtri');
728: $safehole->wrap(\&Math::Cephes::ndtr ,$safeeval,'&ndtr' );
729: $safehole->wrap(\&Math::Cephes::ndtri ,$safeeval,'&ndtri' );
730: $safehole->wrap(\&Math::Cephes::pdtr ,$safeeval,'&pdtr' );
731: $safehole->wrap(\&Math::Cephes::pdtrc ,$safeeval,'&pdtrc' );
732: $safehole->wrap(\&Math::Cephes::pdtri ,$safeeval,'&pdtri' );
733: $safehole->wrap(\&Math::Cephes::stdtr ,$safeeval,'&stdtr' );
734: $safehole->wrap(\&Math::Cephes::stdtri,$safeeval,'&stdtri');
735:
736: $safehole->wrap(\&Math::Cephes::Matrix::mat,$safeeval,'&mat');
737: $safehole->wrap(\&Math::Cephes::Matrix::new,$safeeval,
738: '&Math::Cephes::Matrix::new');
739: $safehole->wrap(\&Math::Cephes::Matrix::coef,$safeeval,
740: '&Math::Cephes::Matrix::coef');
741: $safehole->wrap(\&Math::Cephes::Matrix::clr,$safeeval,
742: '&Math::Cephes::Matrix::clr');
743: $safehole->wrap(\&Math::Cephes::Matrix::add,$safeeval,
744: '&Math::Cephes::Matrix::add');
745: $safehole->wrap(\&Math::Cephes::Matrix::sub,$safeeval,
746: '&Math::Cephes::Matrix::sub');
747: $safehole->wrap(\&Math::Cephes::Matrix::mul,$safeeval,
748: '&Math::Cephes::Matrix::mul');
749: $safehole->wrap(\&Math::Cephes::Matrix::div,$safeeval,
750: '&Math::Cephes::Matrix::div');
751: $safehole->wrap(\&Math::Cephes::Matrix::inv,$safeeval,
752: '&Math::Cephes::Matrix::inv');
753: $safehole->wrap(\&Math::Cephes::Matrix::transp,$safeeval,
754: '&Math::Cephes::Matrix::transp');
755: $safehole->wrap(\&Math::Cephes::Matrix::simq,$safeeval,
756: '&Math::Cephes::Matrix::simq');
757: $safehole->wrap(\&Math::Cephes::Matrix::mat_to_vec,$safeeval,
758: '&Math::Cephes::Matrix::mat_to_vec');
759: $safehole->wrap(\&Math::Cephes::Matrix::vec_to_mat,$safeeval,
760: '&Math::Cephes::Matrix::vec_to_mat');
761: $safehole->wrap(\&Math::Cephes::Matrix::check,$safeeval,
762: '&Math::Cephes::Matrix::check');
763: $safehole->wrap(\&Math::Cephes::Matrix::check,$safeeval,
764: '&Math::Cephes::Matrix::check');
765:
766: # $safehole->wrap(\&Math::Cephes::new_fract,$safeeval,'&new_fract');
767: # $safehole->wrap(\&Math::Cephes::radd,$safeeval,'&radd');
768: # $safehole->wrap(\&Math::Cephes::rsub,$safeeval,'&rsub');
769: # $safehole->wrap(\&Math::Cephes::rmul,$safeeval,'&rmul');
770: # $safehole->wrap(\&Math::Cephes::rdiv,$safeeval,'&rdiv');
771: # $safehole->wrap(\&Math::Cephes::euclid,$safeeval,'&euclid');
772:
773: $safehole->wrap(\&Math::Random::random_beta,$safeeval,'&math_random_beta');
774: $safehole->wrap(\&Math::Random::random_chi_square,$safeeval,'&math_random_chi_square');
775: $safehole->wrap(\&Math::Random::random_exponential,$safeeval,'&math_random_exponential');
776: $safehole->wrap(\&Math::Random::random_f,$safeeval,'&math_random_f');
777: $safehole->wrap(\&Math::Random::random_gamma,$safeeval,'&math_random_gamma');
778: $safehole->wrap(\&Math::Random::random_multivariate_normal,$safeeval,'&math_random_multivariate_normal');
779: $safehole->wrap(\&Math::Random::random_multinomial,$safeeval,'&math_random_multinomial');
780: $safehole->wrap(\&Math::Random::random_noncentral_chi_square,$safeeval,'&math_random_noncentral_chi_square');
781: $safehole->wrap(\&Math::Random::random_noncentral_f,$safeeval,'&math_random_noncentral_f');
782: $safehole->wrap(\&Math::Random::random_normal,$safeeval,'&math_random_normal');
783: $safehole->wrap(\&Math::Random::random_permutation,$safeeval,'&math_random_permutation');
784: $safehole->wrap(\&Math::Random::random_permuted_index,$safeeval,'&math_random_permuted_index');
785: $safehole->wrap(\&Math::Random::random_uniform,$safeeval,'&math_random_uniform');
786: $safehole->wrap(\&Math::Random::random_poisson,$safeeval,'&math_random_poisson');
787: $safehole->wrap(\&Math::Random::random_uniform_integer,$safeeval,'&math_random_uniform_integer');
788: $safehole->wrap(\&Math::Random::random_negative_binomial,$safeeval,'&math_random_negative_binomial');
789: $safehole->wrap(\&Math::Random::random_binomial,$safeeval,'&math_random_binomial');
790: $safehole->wrap(\&Math::Random::random_seed_from_phrase,$safeeval,'&random_seed_from_phrase');
791: $safehole->wrap(\&Math::Random::random_set_seed_from_phrase,$safeeval,'&random_set_seed_from_phrase');
792: $safehole->wrap(\&Math::Random::random_get_seed,$safeeval,'&random_get_seed');
793: $safehole->wrap(\&Math::Random::random_set_seed,$safeeval,'&random_set_seed');
794: $safehole->wrap(\&Apache::loncommon::languages,$safeeval,'&languages');
795: $safehole->wrap(\&Apache::lonxml::error,$safeeval,'&LONCAPA_INTERNAL_ERROR');
796: $safehole->wrap(\&Apache::lonxml::debug,$safeeval,'&LONCAPA_INTERNAL_DEBUG');
797: $safehole->wrap(\&Apache::lonnet::logthis,$safeeval,'&LONCAPA_INTERNAL_LOGTHIS');
798: $safehole->wrap(\&Apache::inputtags::finalizeawards,$safeeval,'&LONCAPA_INTERNAL_FINALIZEAWARDS');
799: $safehole->wrap(\&Apache::caparesponse::get_sigrange,$safeeval,'&LONCAPA_INTERNAL_get_sigrange');
800: $safehole->wrap(\&Apache::functionplotresponse::fpr_val,$safeeval,'&fpr_val');
801: $safehole->wrap(\&Apache::functionplotresponse::fpr_f,$safeeval,'&fpr_f');
802: $safehole->wrap(\&Apache::functionplotresponse::fpr_dfdx,$safeeval,'&fpr_dfdx');
803: $safehole->wrap(\&Apache::functionplotresponse::fpr_d2fdx2,$safeeval,'&fpr_d2fdx2');
804: $safehole->wrap(\&Apache::functionplotresponse::fpr_vectorcoords,$safeeval,'&fpr_vectorcoords');
805: $safehole->wrap(\&Apache::functionplotresponse::fpr_objectcoords,$safeeval,'&fpr_objectcoords');
806: $safehole->wrap(\&Apache::functionplotresponse::fpr_vectorlength,$safeeval,'&fpr_vectorlength');
807: $safehole->wrap(\&Apache::functionplotresponse::fpr_vectorangle,$safeeval,'&fpr_vectorangle');
808:
809: # use Data::Dumper;
810: # $safehole->wrap(\&Data::Dumper::Dumper,$safeeval,'&LONCAPA_INTERNAL_Dumper');
811: #need to inspect this class of ops
812: # $safeeval->deny(":base_orig");
813: $safeeval->permit("require");
814: $safeinit .= ';$external::target="'.$target.'";';
815: &Apache::run::run($safeinit,$safeeval);
816: &initialize_rndseed($safeeval);
817: }
818:
819: sub clean_safespace {
820: my ($safeeval) = @_;
821: delete_package_recurse($safeeval->{Root});
822: }
823:
824: sub delete_package_recurse {
825: my ($package) = @_;
826: my @subp;
827: {
828: no strict 'refs';
829: while (my ($key,$val) = each(%{*{"$package\::"}})) {
830: if (!defined($val)) { next; }
831: local (*ENTRY) = $val;
832: if (defined *ENTRY{HASH} && $key =~ /::$/ &&
833: $key ne "main::" && $key ne "<none>::")
834: {
835: my ($p) = $package ne "main" ? "$package\::" : "";
836: ($p .= $key) =~ s/::$//;
837: push(@subp,$p);
838: }
839: }
840: }
841: foreach my $p (@subp) {
842: delete_package_recurse($p);
843: }
844: Symbol::delete_package($package);
845: }
846:
847: sub initialize_rndseed {
848: my ($safeeval)=@_;
849: my $rndseed;
850: my ($symb,$courseid,$domain,$name) = &Apache::lonnet::whichuser();
851: $rndseed=&Apache::lonnet::rndseed($symb,$courseid,$domain,$name);
852: my $safeinit = '$external::randomseed="'.$rndseed.'";';
853: &Apache::lonxml::debug("Setting rndseed to $rndseed");
854: &Apache::run::run($safeinit,$safeeval);
855: }
856:
857: sub default_homework_load {
858: my ($safeeval)=@_;
859: &Apache::lonxml::debug('Loading default_homework');
860: my $default=&Apache::lonnet::getfile($Apache::lonnet::perlvar{'lonIncludes'}.
861: '/default_homework.lcpm');
862: if ($default eq -1) {
863: &Apache::lonxml::error("<b>Unable to find <i>default_homework.lcpm</i></b>");
864: } else {
865: &Apache::run::run($default,$safeeval);
866: $Apache::lonxml::default_homework_loaded=1;
867: }
868: }
869:
870: {
871: my $alarm_depth;
872: sub init_alarm {
873: alarm(0);
874: $alarm_depth=0;
875: }
876:
877: sub start_alarm {
878: if ($alarm_depth<1) {
879: my $old=alarm($Apache::lonnet::perlvar{'lonScriptTimeout'});
880: if ($old) {
881: &Apache::lonxml::error("Cancelled an alarm of $old, this shouldn't occur.");
882: }
883: }
884: $alarm_depth++;
885: }
886:
887: sub end_alarm {
888: $alarm_depth--;
889: if ($alarm_depth<1) { alarm(0); }
890: }
891: }
892: my $metamode_was;
893: sub startredirection {
894: if (!$Apache::lonxml::redirection) {
895: $metamode_was=$Apache::lonxml::metamode;
896: }
897: $Apache::lonxml::metamode=0;
898: $Apache::lonxml::redirection++;
899: push (@Apache::lonxml::outputstack, '');
900: }
901:
902: sub endredirection {
903: if (!$Apache::lonxml::redirection) {
904: &Apache::lonxml::error("Endredirection was called before a startredirection, perhaps you have unbalanced tags. Some debugging information:".join ":",caller);
905: return '';
906: }
907: $Apache::lonxml::redirection--;
908: if (!$Apache::lonxml::redirection) {
909: $Apache::lonxml::metamode=$metamode_was;
910: }
911: pop @Apache::lonxml::outputstack;
912: }
913: sub in_redirection {
914: return ($Apache::lonxml::redirection > 0)
915: }
916:
917: sub end_tag {
918: my ($tagstack,$parstack,$token)=@_;
919: pop(@$tagstack);
920: pop(@$parstack);
921: &decreasedepth($token);
922: }
923:
924: sub initdepth {
925: @Apache::lonxml::depthcounter=();
926: undef($Apache::lonxml::last_depth_count);
927: }
928:
929:
930: my @timers;
931: my $lasttime;
932: # @Apache::lonxml::depthcounter -> count of tags that exist so
933: # far at each level
934: # $Apache::lonxml::last_depth_count -> when ascending, need to
935: # remember the count for the level below the current level (for
936: # example going from 1_2 -> 1 -> 1_3 need to remember the 2 )
937:
938: sub increasedepth {
939: my ($token) = @_;
940: push(@Apache::lonxml::depthcounter,$Apache::lonxml::last_depth_count+1);
941: undef($Apache::lonxml::last_depth_count);
942: my $time;
943: if ($Apache::lonxml::debug eq "1") {
944: push(@timers,[&gettimeofday()]);
945: $time=&tv_interval($lasttime);
946: $lasttime=[&gettimeofday()];
947: }
948: my $spacing=' 'x($#Apache::lonxml::depthcounter);
949: $Apache::lonxml::curdepth=join('_',@Apache::lonxml::depthcounter);
950: # &Apache::lonxml::debug("s$spacing$Apache::lonxml::depth : $Apache::lonxml::olddepth : $Apache::lonxml::curdepth : $token->[1] : $time");
951: #print "<br />s $Apache::lonxml::depth : $Apache::lonxml::olddepth : $curdepth : $token->[1]\n";
952: }
953:
954: sub decreasedepth {
955: my ($token) = @_;
956: if ( $#Apache::lonxml::depthcounter == -1) {
957: &Apache::lonxml::warning(&mt("Missing tags, unable to properly run file."));
958: }
959: $Apache::lonxml::last_depth_count = pop(@Apache::lonxml::depthcounter);
960:
961: my ($timer,$time);
962: if ($Apache::lonxml::debug eq "1") {
963: $timer=pop(@timers);
964: $time=&tv_interval($lasttime);
965: $lasttime=[&gettimeofday()];
966: }
967: my $spacing=' 'x($#Apache::lonxml::depthcounter);
968: $Apache::lonxml::curdepth = join('_',@Apache::lonxml::depthcounter);
969: # &Apache::lonxml::debug("e$spacing$Apache::lonxml::depth : $Apache::lonxml::olddepth : $Apache::lonxml::curdepth : $token->[1] : $time : ".&tv_interval($timer));
970: #print "<br />e $Apache::lonxml::depth : $Apache::lonxml::olddepth : $token->[1] : $curdepth\n";
971: }
972:
973: sub get_id {
974: my ($parstack,$safeeval)=@_;
975: my $id= &Apache::lonxml::get_param('id',$parstack,$safeeval);
976: if ($env{'request.state'} eq 'construct' && $id =~ /([._]|[^\w\d\s[:punct:]])/) {
977: &error(&mt('ID [_1] contains invalid characters. IDs are only allowed to contain letters, numbers, spaces and -','"<tt>'.$id.'</tt>"'));
978: }
979: if ($id =~ /^\s*$/) { $id = $Apache::lonxml::curdepth; }
980: return $id;
981: }
982:
983: sub get_all_text_unbalanced {
984: #there is a copy of this in lonpublisher.pm
985: my($tag,$pars)= @_;
986: my $token;
987: my $result='';
988: $tag='<'.$tag.'>';
989: while ($token = $$pars[-1]->get_token) {
990: if (($token->[0] eq 'T')||($token->[0] eq 'C')||($token->[0] eq 'D')) {
991: if ($token->[0] eq 'T' && $token->[2]) {
992: $result.='<![CDATA['.$token->[1].']]>';
993: } else {
994: $result.=$token->[1];
995: }
996: } elsif ($token->[0] eq 'PI') {
997: $result.=$token->[2];
998: } elsif ($token->[0] eq 'S') {
999: $result.=$token->[4];
1000: } elsif ($token->[0] eq 'E') {
1001: $result.=$token->[2];
1002: }
1003: if ($result =~ /\Q$tag\E/is) {
1004: ($result,my $redo)=$result =~ /(.*)\Q$tag\E(.*)/is;
1005: #&Apache::lonxml::debug('Got a winner with leftovers ::'.$2);
1006: #&Apache::lonxml::debug('Result is :'.$1);
1007: $redo=$tag.$redo;
1008: &Apache::lonxml::newparser($pars,\$redo);
1009: last;
1010: }
1011: }
1012: return $result
1013:
1014: }
1015:
1016: #########################################################################
1017: # #
1018: # bubble line counter management #
1019: # #
1020: #########################################################################
1021:
1022: =pod
1023:
1024: For bubble grading mode and exam bubble printing mode, the tracking of
1025: the current 'bubble line number' is stored in the %env element
1026: 'form.counter', and is modifed and handled by the following routines.
1027:
1028: The value of it is stored in $Apache:lonxml::counter when live and
1029: stored back to env after done.
1030:
1031: =item &increment_counter($increment, $part_response);
1032:
1033: Increments the internal counter environment variable a specified amount
1034:
1035: Optional Arguments:
1036: $increment - amount to increment by (defaults to 1)
1037: Also 1 if the value is negative or zero.
1038: $part_response - A concatenation of the part and response id
1039: identifying exactly what is being 'answered'.
1040:
1041:
1042: =cut
1043:
1044: sub increment_counter {
1045: my ($increment, $part_response) = @_;
1046: if ($env{'form.grade_noincrement'}) { return; }
1047: if (!defined($increment) || $increment le 0) {
1048: $increment = 1;
1049: }
1050: $Apache::lonxml::counter += $increment;
1051:
1052: # If the caller supplied the response_id parameter,
1053: # Maintain its counter.. creating if necessary.
1054:
1055: if (defined($part_response)) {
1056: if (!defined($Apache::lonxml::counters_per_part{$part_response})) {
1057: $Apache::lonxml::counters_per_part{$part_response} = 0;
1058: }
1059: $Apache::lonxml::counters_per_part{$part_response} += $increment;
1060: my $new_value = $Apache::lonxml::counters_per_part{$part_response};
1061: }
1062:
1063: $Apache::lonxml::counter_changed=1;
1064: }
1065:
1066: =pod
1067:
1068: =item &init_counter($increment);
1069:
1070: Initialize the internal counter environment variable
1071:
1072: =cut
1073:
1074: sub init_counter {
1075: if ($env{'request.state'} eq 'construct') {
1076: $Apache::lonxml::counter=1;
1077: $Apache::lonxml::counter_changed=1;
1078: } elsif (defined($env{'form.counter'})) {
1079: $Apache::lonxml::counter=$env{'form.counter'};
1080: $Apache::lonxml::counter_changed=0;
1081: } else {
1082: $Apache::lonxml::counter=1;
1083: $Apache::lonxml::counter_changed=1;
1084: }
1085: }
1086:
1087: sub store_counter {
1088: &Apache::lonnet::appenv({'form.counter' => $Apache::lonxml::counter});
1089: $Apache::lonxml::counter_changed=0;
1090: return '';
1091: }
1092:
1093: {
1094: my $state;
1095: sub clear_problem_counter {
1096: undef($state);
1097: &Apache::lonnet::delenv('form.counter');
1098: &Apache::lonxml::init_counter();
1099: &Apache::lonxml::store_counter();
1100: }
1101:
1102: sub remember_problem_counter {
1103: &Apache::lonnet::transfer_profile_to_env(undef,undef,1);
1104: $state = $env{'form.counter'};
1105: }
1106:
1107: sub restore_problem_counter {
1108: if (defined($state)) {
1109: &Apache::lonnet::appenv({'form.counter' => $state});
1110: }
1111: }
1112: sub get_problem_counter {
1113: if ($Apache::lonxml::counter_changed) { &store_counter() }
1114: &Apache::lonnet::transfer_profile_to_env(undef,undef,1);
1115: return $env{'form.counter'};
1116: }
1117: }
1118:
1119: =pod
1120:
1121: =item bubble_lines_for_part(part_response)
1122:
1123: Returns the number of lines required to get a response for
1124: $part_response (this is just $Apache::lonxml::counters_per_part{$part_response}
1125:
1126: =cut
1127:
1128: sub bubble_lines_for_part {
1129: my ($part_response) = @_;
1130:
1131: if (!defined($Apache::lonxml::counters_per_part{$part_response})) {
1132: return 0;
1133: } else {
1134: return $Apache::lonxml::counters_per_part{$part_response};
1135: }
1136: }
1137:
1138: =pod
1139:
1140: =item clear_bubble_lines_for_part
1141:
1142: Clears the hash of bubble lines per part. If a caller
1143: needs to analyze several resources this should be called between
1144: resources to reset the hash for each problem being analyzed.
1145:
1146: =cut
1147:
1148: sub clear_bubble_lines_for_part {
1149: undef(%Apache::lonxml::counters_per_part);
1150: }
1151:
1152: =pod
1153:
1154: =item set_bubble_lines(part_response, value)
1155:
1156: If there is a problem part, that for whatever reason
1157: requires bubble lines that are not
1158: the same as the counter increment, it can call this sub during
1159: analysis to set its hash value explicitly.
1160:
1161: =cut
1162:
1163: sub set_bubble_lines {
1164: my ($part_response, $value) = @_;
1165:
1166: $Apache::lonxml::counters_per_part{$part_response} = $value;
1167: }
1168:
1169: =pod
1170:
1171: =item get_bubble_line_hash
1172:
1173: Returns the current bubble line hash. This is assumed to
1174: be small so we return a copy
1175:
1176:
1177: =cut
1178:
1179: sub get_bubble_line_hash {
1180: return %Apache::lonxml::counters_per_part;
1181: }
1182:
1183:
1184: #--------------------------------------------------
1185:
1186: sub get_all_text {
1187: my($tag,$pars,$style)= @_;
1188: my $gotfullstack=1;
1189: if (ref($pars) ne 'ARRAY') {
1190: $gotfullstack=0;
1191: $pars=[$pars];
1192: }
1193: if (ref($style) ne 'HASH') {
1194: $style={};
1195: }
1196: my $depth=0;
1197: my $token;
1198: my $result='';
1199: if ( $tag =~ m:^/: ) {
1200: my $tag=substr($tag,1);
1201: #&Apache::lonxml::debug("have:$tag:");
1202: my $top_empty=0;
1203: while (($depth >=0) && ($#$pars > -1) && (!$top_empty)) {
1204: while (($depth >=0) && ($token = $$pars[-1]->get_token)) {
1205: #&Apache::lonxml::debug("e token:$token->[0]:$depth:$token->[1]:".$#$pars.":".$#Apache::lonxml::pwd);
1206: if (($token->[0] eq 'T')||($token->[0] eq 'C')||($token->[0] eq 'D')) {
1207: if ($token->[2]) {
1208: $result.='<![CDATA['.$token->[1].']]>';
1209: } else {
1210: $result.=$token->[1];
1211: }
1212: } elsif ($token->[0] eq 'PI') {
1213: $result.=$token->[2];
1214: } elsif ($token->[0] eq 'S') {
1215: if ($token->[1] =~ /^\Q$tag\E$/i) { $depth++; }
1216: if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_ON$/) { $Apache::lonxml::usestyle=1; }
1217: if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_OFF$/) { $Apache::lonxml::usestyle=0; }
1218: $result.=$token->[4];
1219: } elsif ($token->[0] eq 'E') {
1220: if ( $token->[1] =~ /^\Q$tag\E$/i) { $depth--; }
1221: #skip sending back the last end tag
1222: if ($depth == 0 && exists($$style{'/'.$token->[1]}) && $Apache::lonxml::usestyle) {
1223: my $string=
1224: '<LONCAPA_INTERNAL_TURN_STYLE_OFF end="yes" />'.
1225: $$style{'/'.$token->[1]}.
1226: $token->[2].
1227: '<LONCAPA_INTERNAL_TURN_STYLE_ON />';
1228: &Apache::lonxml::newparser($pars,\$string);
1229: #&Apache::lonxml::debug("reParsing $string");
1230: next;
1231: }
1232: if ($depth > -1) {
1233: $result.=$token->[2];
1234: } else {
1235: $$pars[-1]->unget_token($token);
1236: }
1237: }
1238: }
1239: if (($depth >=0) && ($#$pars == 0) ) { $top_empty=1; }
1240: if (($depth >=0) && ($#$pars > 0) ) {
1241: pop(@$pars);
1242: pop(@Apache::lonxml::pwd);
1243: }
1244: }
1245: if ($top_empty && $depth >= 0) {
1246: #never found the end tag ran out of text, throw error send back blank
1247: &error('Never found end tag for <'.$tag.
1248: '> current string <pre>'.
1249: &HTML::Entities::encode($result,'<>&"').
1250: '</pre>');
1251: if ($gotfullstack) {
1252: my $newstring='</'.$tag.'>'.$result;
1253: &Apache::lonxml::newparser($pars,\$newstring);
1254: }
1255: $result='';
1256: }
1257: } else {
1258: while ($#$pars > -1) {
1259: while ($token = $$pars[-1]->get_token) {
1260: #&Apache::lonxml::debug("s token:$token->[0]:$depth:$token->[1]");
1261: if (($token->[0] eq 'T')||($token->[0] eq 'C')||
1262: ($token->[0] eq 'D')) {
1263: if ($token->[2]) {
1264: $result.='<![CDATA['.$token->[1].']]>';
1265: } else {
1266: $result.=$token->[1];
1267: }
1268: } elsif ($token->[0] eq 'PI') {
1269: $result.=$token->[2];
1270: } elsif ($token->[0] eq 'S') {
1271: if ( $token->[1] =~ /^\Q$tag\E$/i) {
1272: $$pars[-1]->unget_token($token); last;
1273: } else {
1274: $result.=$token->[4];
1275: }
1276: if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_ON$/) { $Apache::lonxml::usestyle=1; }
1277: if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_OFF$/) { $Apache::lonxml::usestyle=0; }
1278: } elsif ($token->[0] eq 'E') {
1279: $result.=$token->[2];
1280: }
1281: }
1282: if (($#$pars > 0) ) {
1283: pop(@$pars);
1284: pop(@Apache::lonxml::pwd);
1285: } else { last; }
1286: }
1287: }
1288: #&Apache::lonxml::debug("Exit:$result:");
1289: return $result
1290: }
1291:
1292: sub newparser {
1293: my ($parser,$contentref,$dir) = @_;
1294: push (@$parser,HTML::LCParser->new($contentref));
1295: $$parser[-1]->xml_mode(1);
1296: $$parser[-1]->marked_sections(1);
1297: if ( $dir eq '' ) {
1298: push (@Apache::lonxml::pwd, $Apache::lonxml::pwd[$#Apache::lonxml::pwd]);
1299: } else {
1300: push (@Apache::lonxml::pwd, $dir);
1301: }
1302: }
1303:
1304: sub parstring {
1305: my ($token) = @_;
1306: my (@vars,@values);
1307: foreach my $attr (@{$token->[3]}) {
1308: if ($attr!~/\W/) {
1309: my $val=$token->[2]->{$attr};
1310: $val =~ s/([\%\@\\\"\'])/\\$1/g;
1311: $val =~ s/(\$[^\{a-zA-Z_])/\\$1/g;
1312: $val =~ s/(\$)$/\\$1/;
1313: #if ($val =~ m/^[\%\@]/) { $val="\\".$val; }
1314: push(@vars,"\$$attr");
1315: push(@values,"\"$val\"");
1316: }
1317: }
1318: my $var_init =
1319: (@vars) ? 'my ('.join(',',@vars).') = ('.join(',',@values).');'
1320: : '';
1321: return $var_init;
1322: }
1323:
1324: sub extlink {
1325: my ($res,$exact)=@_;
1326: if (!$exact) {
1327: $res=&Apache::lonnet::hreflocation($Apache::lonxml::pwd[-1],$res);
1328: }
1329: push(@Apache::lonxml::extlinks,$res);
1330: }
1331:
1332: sub writeallows {
1333: unless ($#extlinks>=0) { return; }
1334: my $thisurl = &Apache::lonnet::clutter(shift);
1335: if ($env{'httpref.'.$thisurl}) {
1336: $thisurl=$env{'httpref.'.$thisurl};
1337: }
1338: my $thisdir=$thisurl;
1339: $thisdir=~s/\/[^\/]+$//;
1340: my %httpref=();
1341: foreach (@extlinks) {
1342: $httpref{'httpref.'.
1343: &Apache::lonnet::hreflocation($thisdir,&unescape($_))}=$thisurl;
1344: }
1345: @extlinks=();
1346: &Apache::lonnet::appenv(\%httpref);
1347: }
1348:
1349: sub register_ssi {
1350: my ($url,%form)=@_;
1351: push (@Apache::lonxml::ssi_info,{'url'=>$url,'form'=>\%form});
1352: return '';
1353: }
1354:
1355: sub do_registered_ssi {
1356: foreach my $info (@Apache::lonxml::ssi_info) {
1357: my %form=%{ $info->{'form'}};
1358: my $url=$info->{'url'};
1359: &Apache::lonnet::ssi($url,%form);
1360: }
1361: }
1362:
1363: sub add_script_result {
1364: my ($display) = @_;
1365: if ($display ne '') {
1366: push(@script_var_displays, $display);
1367: }
1368: }
1369:
1370: #
1371: # Afterburner handles anchors, highlights and links
1372: #
1373: sub afterburn {
1374: my $result=shift;
1375: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
1376: ['highlight','anchor','link']);
1377: if ($env{'form.highlight'}) {
1378: foreach (split(/\,/,$env{'form.highlight'})) {
1379: my $anchorname=$_;
1380: my $matchthis=$anchorname;
1381: $matchthis=~s/\_+/\\s\+/g;
1382: $result=~s/(\Q$matchthis\E)/\<font color=\"red\"\>$1\<\/font\>/gs;
1383: }
1384: }
1385: if ($env{'form.link'}) {
1386: foreach (split(/\,/,$env{'form.link'})) {
1387: my ($anchorname,$linkurl)=split(/\>/,$_);
1388: my $matchthis=$anchorname;
1389: $matchthis=~s/\_+/\\s\+/g;
1390: $result=~s/(\Q$matchthis\E)/\<a href=\"$linkurl\"\>$1\<\/a\>/gs;
1391: }
1392: }
1393: if ($env{'form.anchor'}) {
1394: my $anchorname=$env{'form.anchor'};
1395: my $matchthis=$anchorname;
1396: $matchthis=~s/\_+/\\s\+/g;
1397: $result=~s/(\Q$matchthis\E)/\<a name=\"$anchorname\"\>$1\<\/a\>/s;
1398: $result.=(<<"ENDSCRIPT");
1399: <script type="text/javascript">
1400: document.location.hash='$anchorname';
1401: </script>
1402: ENDSCRIPT
1403: }
1404: return $result;
1405: }
1406:
1407: sub storefile {
1408: my ($file,$contents)=@_;
1409: &Apache::lonnet::correct_line_ends(\$contents);
1410: if (my $fh=Apache::File->new('>'.$file)) {
1411: print $fh $contents;
1412: $fh->close();
1413: return 1;
1414: } else {
1415: &warning(&mt('Unable to save file [_1]','<tt>'.$file.'</tt>'));
1416: return 0;
1417: }
1418: }
1419:
1420: sub createnewhtml {
1421: my $title=&mt('Title of document goes here');
1422: my $body=&mt('Body of document goes here');
1423: my $filecontents=(<<SIMPLECONTENT);
1424: <html>
1425: <head>
1426: <title>$title</title>
1427: </head>
1428: <body bgcolor="#FFFFFF">
1429: $body
1430: </body>
1431: </html>
1432: SIMPLECONTENT
1433: return $filecontents;
1434: }
1435:
1436: sub createnewsty {
1437: my $filecontents=(<<SIMPLECONTENT);
1438: <definetag name="">
1439: <render>
1440: <web></web>
1441: <tex></tex>
1442: </render>
1443: </definetag>
1444: SIMPLECONTENT
1445: return $filecontents;
1446: }
1447:
1448: sub createnewjs {
1449: my $filecontents=(<<SIMPLECONTENT);
1450: <script type="text/javascript" language="Javascript">
1451:
1452: </script>
1453: SIMPLECONTENT
1454: return $filecontents;
1455: }
1456:
1457: sub verify_html {
1458: my ($filecontents)=@_;
1459: my ($is_html,$is_xml);
1460: if ($filecontents =~/(?:\<|\<\;)\?xml[^\<]*\?(?:\>|\>\;)/is) {
1461: $is_xml = 1;
1462: } elsif ($filecontents =~/(?:\<|\<\;)html(?:\s+[^\<]+|\s*)(?:\>|\>\;)/is) {
1463: $is_html = 1;
1464: }
1465: unless ($is_xml || $is_html) {
1466: return &mt('File does not have [_1] or [_2] starting tag','<html>','<?xml ?>');
1467: }
1468: if ($is_html) {
1469: if ($filecontents!~/(?:\<|\<\;)\/html(?:\>|\>\;)/is) {
1470: return &mt('File does not have [_1] ending tag','<html>');
1471: }
1472: if ($filecontents!~/(?:\<|\<\;)(?:body|frameset)[^\<]*(?:\>|\>\;)/is) {
1473: return &mt('File does not have [_1] or [_2] starting tag','<body>','<frameset>');
1474: }
1475: if ($filecontents!~/(?:\<|\<\;)\/(?:body|frameset)[^\<]*(?:\>|\>\;)/is) {
1476: return &mt('File does not have [_1] or [_2] ending tag','<body>','<frameset>');
1477: }
1478: }
1479: return '';
1480: }
1481:
1482: sub renderingoptions {
1483: my %langchoices=('' => '');
1484: foreach (&Apache::loncommon::languageids()) {
1485: if (&Apache::loncommon::supportedlanguagecode($_)) {
1486: $langchoices{&Apache::loncommon::supportedlanguagecode($_)}
1487: = &Apache::loncommon::plainlanguagedescription($_);
1488: }
1489: }
1490: my $output;
1491: unless ($env{'form.forceedit'}) {
1492: $output .=
1493: '<span class="LC_nobreak">'.
1494: &mt('Language:').' '.
1495: &Apache::loncommon::select_form(
1496: $env{'form.languages'},
1497: 'languages',
1498: {&Apache::lonlocal::texthash(%langchoices)}).
1499: '</span>';
1500: }
1501: $output .=
1502: ' <span class="LC_nobreak">'.
1503: &mt('Math Rendering:').' '.
1504: &Apache::loncommon::select_form(
1505: $env{'form.texengine'},
1506: 'texengine',
1507: {&Apache::lonlocal::texthash
1508: ('' => '',
1509: 'tth' => 'tth (TeX to HTML)',
1510: 'MathJax' => 'MathJax',
1511: 'jsMath' => 'jsMath',
1512: 'mimetex' => 'mimetex (Convert to Images)')}).
1513: '</span>';
1514: return $output;
1515: }
1516:
1517: sub inserteditinfo {
1518: my ($filecontents,$filetype,$filename,$symb,$itemtitle,$folderpath,$uri,$action) = @_;
1519: $filecontents = &HTML::Entities::encode($filecontents,'<>&"');
1520: my $xml_help = '';
1521: my $initialize='';
1522: my $textarea_id = 'filecont';
1523: my ($dragmath_button,$deps_button,$context,$cnum,$cdom,$add_to_onload,
1524: $add_to_onresize,$init_dragmath);
1525: $initialize=&Apache::lonhtmlcommon::spellheader();
1526: if ($filetype eq 'html') {
1527: if ($env{'request.course.id'}) {
1528: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
1529: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
1530: if ($uri =~ m{^\Q/uploaded/$cdom/$cnum/portfolio/syllabus/\E}) {
1531: $context = 'syllabus';
1532: }
1533: }
1534: if (&Apache::lonhtmlcommon::htmlareabrowser()) {
1535: my $lang = &Apache::lonhtmlcommon::htmlarea_lang();
1536: my %textarea_args = (
1537: fullpage => 'true',
1538: dragmath => 'math',
1539: );
1540: $initialize .= &Apache::lonhtmlcommon::htmlareaselectactive(\%textarea_args);
1541: if ($context eq 'syllabus') {
1542: $init_dragmath = "editmath_visibility('filecont','none')";
1543: }
1544: }
1545: }
1546: $initialize .= (<<FULLPAGE);
1547: <script type="text/javascript">
1548: // <![CDATA[
1549: function initDocument() {
1550: resize_textarea('$textarea_id','LC_aftertextarea');
1551: $init_dragmath
1552: }
1553: // ]]>
1554: </script>
1555: FULLPAGE
1556: my $textareaclass;
1557: if ($filetype eq 'html') {
1558: if ($context eq 'syllabus') {
1559: $deps_button = &Apache::lonhtmlcommon::dependencies_button()."\n";
1560: $initialize .=
1561: &Apache::lonhtmlcommon::dependencycheck_js(undef,&mt('Syllabus'),
1562: $uri,undef,
1563: "/public/$cdom/$cnum/syllabus").
1564: "\n";
1565: if (&Apache::lonhtmlcommon::htmlareabrowser()) {
1566: $textareaclass = 'class="LC_richDefaultOn"';
1567: }
1568: } elsif ($symb || $folderpath) {
1569: $deps_button = &Apache::lonhtmlcommon::dependencies_button()."\n";
1570: $initialize .=
1571: &Apache::lonhtmlcommon::dependencycheck_js($symb,$itemtitle,
1572: undef,$folderpath,$uri)."\n";
1573: }
1574: $dragmath_button = '<span id="math_filecont">'.&Apache::lonhtmlcommon::dragmath_button('filecont',1).'</span>';
1575: $initialize .= "\n".&Apache::lonhtmlcommon::dragmath_js('EditMathPopup');
1576: }
1577: $add_to_onload = 'initDocument();';
1578: $add_to_onresize = "resize_textarea('$textarea_id','LC_aftertextarea');";
1579:
1580: if ($filetype eq 'html') {
1581: my $not_author;
1582: if ($uri =~ m{^/uploaded/}) {
1583: $not_author = 1;
1584: }
1585: $xml_help=&Apache::loncommon::helpLatexCheatsheet(undef,undef,$not_author);
1586: }
1587:
1588: my $titledisplay=&display_title();
1589: my %lt=&Apache::lonlocal::texthash('st' => 'Save and Edit',
1590: 'vi' => 'Save and View',
1591: 'dv' => 'Discard Edits and View',
1592: 'un' => 'undo',
1593: 'ed' => 'Edit');
1594: my $spelllink = &Apache::lonhtmlcommon::spelllink('xmledit','filecont');
1595: my $textarea_events = &Apache::edit::element_change_detection();
1596: my $form_events = &Apache::edit::form_change_detection();
1597: my $htmlerror;
1598: if ($filetype eq 'html') {
1599: $htmlerror=&verify_html($filecontents);
1600: if ($htmlerror) {
1601: $htmlerror='<span class="LC_error">'.$htmlerror.'</span>';
1602: }
1603: if (&Apache::lonhtmlcommon::htmlareabrowser()) {
1604: unless ($textareaclass) {
1605: $textareaclass = 'class="LC_richDefaultOff"';
1606: }
1607: }
1608: }
1609: my $undo;
1610: unless ($uri =~ m{^/uploaded/}) {
1611: $undo = '<input type="submit" name="Undo" accesskey="u" value="'.$lt{'un'}.'" />'."\n";
1612: }
1613: my $editfooter=(<<ENDFOOTER);
1614: $initialize
1615: <a name="editsection" />
1616: <form $form_events method="post" name="xmledit" action="$action">
1617: <div class="LC_edit_problem_editxml_header">
1618: <table class="LC_edit_problem_header_title"><tr><td>
1619: $filename
1620: </td><td align="right">
1621: $xml_help
1622: </td></tr>
1623: </table>
1624: <div class="LC_edit_problem_discards">
1625: <input type="submit" name="discardview" accesskey="d" value="$lt{'dv'}" />
1626: $undo $htmlerror $deps_button $dragmath_button
1627: </div>
1628: <div class="LC_edit_problem_saves">
1629: <input type="submit" name="savethisfile" accesskey="s" value="$lt{'st'}" />
1630: <input type="submit" name="viewmode" accesskey="v" value="$lt{'vi'}" />
1631: </div>
1632: </div>
1633: <textarea $textarea_events style="width:100%" cols="80" rows="44" name="filecont" id="filecont" $textareaclass>$filecontents</textarea><br />$spelllink
1634: <div id="LC_aftertextarea">
1635: <br />
1636: $titledisplay
1637: </div>
1638: </form>
1639: ENDFOOTER
1640: return ($editfooter,$add_to_onload,$add_to_onresize);;
1641: }
1642:
1643: sub get_target {
1644: my $viewgrades=&Apache::lonnet::allowed('vgr',$env{'request.course.id'});
1645: if ( $env{'request.state'} eq 'published') {
1646: if ( defined($env{'form.grade_target'})
1647: && ($viewgrades == 'F' )) {
1648: return ($env{'form.grade_target'});
1649: } elsif (defined($env{'form.grade_target'})) {
1650: if (($env{'form.grade_target'} eq 'web') ||
1651: ($env{'form.grade_target'} eq 'tex') ) {
1652: return $env{'form.grade_target'}
1653: } else {
1654: return 'web';
1655: }
1656: } else {
1657: return 'web';
1658: }
1659: } elsif ($env{'request.state'} eq 'construct') {
1660: if ( defined($env{'form.grade_target'})) {
1661: return ($env{'form.grade_target'});
1662: } else {
1663: return 'web';
1664: }
1665: } else {
1666: return 'web';
1667: }
1668: }
1669:
1670: sub handler {
1671: my $request=shift;
1672:
1673: my $target=&get_target();
1674: $Apache::lonxml::debug=$env{'user.debug'};
1675:
1676: &Apache::loncommon::content_type($request,'text/html');
1677: &Apache::loncommon::no_cache($request);
1678: if ($env{'request.state'} eq 'published') {
1679: $request->set_last_modified(&Apache::lonnet::metadata($request->uri,
1680: 'lastrevisiondate'));
1681: }
1682: # Embedded Flash movies from Camtasia served from https will not display in IE
1683: # if XML config file has expired from cache.
1684: if ($ENV{'SERVER_PORT'} == 443) {
1685: if ($request->uri =~ /\.xml$/) {
1686: my ($httpbrowser,$clientbrowser) =
1687: &Apache::loncommon::decode_user_agent($request);
1688: if ($clientbrowser =~ /^explorer$/i) {
1689: delete $request->headers_out->{'Cache-control'};
1690: delete $request->headers_out->{'Pragma'};
1691: my $expiration = time + 60;
1692: my $date=strftime("%a, %d %b %Y %H:%M:%S GMT",gmtime($expiration));
1693: $request->headers_out->set("Expires" => $date);
1694: }
1695: }
1696: }
1697: $request->send_http_header;
1698:
1699: return OK if $request->header_only;
1700:
1701:
1702: my $file=&Apache::lonnet::filelocation("",$request->uri);
1703: my ($filetype,$breadcrumbtext);
1704: if ($file =~ /\.(sty|css|js|txt|tex)$/) {
1705: $filetype=$1;
1706: } else {
1707: $filetype='html';
1708: }
1709: unless ($env{'request.uri'}) {
1710: $env{'request.uri'}=$request->uri;
1711: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
1712: ['todocs']);
1713: }
1714: my ($cdom,$cnum);
1715: if ($env{'request.course.id'}) {
1716: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
1717: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
1718: if ($filetype eq 'html') {
1719: if ($request->uri =~ m{^\Q/uploaded/$cdom/$cnum/portfolio/syllabus/\E.+$}) {
1720: if (&Apache::lonnet::allowed('mdc',$env{'request.course.id'})) {
1721: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
1722: ['editmode']);
1723: }
1724: }
1725: }
1726: }
1727: if ($filetype eq 'sty') {
1728: $breadcrumbtext = 'Style File Editor';
1729: } elsif ($filetype eq 'js') {
1730: $breadcrumbtext = 'Javascript Editor';
1731: } elsif ($filetype eq 'css') {
1732: $breadcrumbtext = 'CSS Editor';
1733: } elsif ($filetype eq 'txt') {
1734: $breadcrumbtext = 'Text Editor';
1735: } elsif ($filetype eq 'tex') {
1736: $breadcrumbtext = 'TeX Editor';
1737: } else {
1738: $breadcrumbtext = 'HTML Editor';
1739: }
1740:
1741: #
1742: # Edit action? Save file.
1743: #
1744: if (!($env{'request.state'} eq 'published')) {
1745: if ($env{'form.savethisfile'} || $env{'form.viewmode'} || $env{'form.Undo'}) {
1746: my $html_file=&Apache::lonnet::getfile($file);
1747: my $error = &Apache::lonhomework::handle_save_or_undo($request, \$html_file, \$env{'form.filecont'});
1748: if ($env{'form.savethisfile'}) {
1749: $env{'form.editmode'}='Edit'; #force edit mode
1750: }
1751: }
1752: }
1753: my $inhibit_menu;
1754: my %mystyle;
1755: my $result = '';
1756: my $filecontents=&Apache::lonnet::getfile($file);
1757: if ($filecontents eq -1) {
1758: my $start_page=&Apache::loncommon::start_page('File Error');
1759: my $end_page=&Apache::loncommon::end_page();
1760: my $errormsg='<p class="LC_error">'
1761: .&mt('File not found: [_1]'
1762: ,'<span class="LC_filename">'.$file.'</span>')
1763: .'</p>';
1764: $result=(<<ENDNOTFOUND);
1765: $start_page
1766: $errormsg
1767: $end_page
1768: ENDNOTFOUND
1769: $filecontents='';
1770: if ($env{'request.state'} ne 'published') {
1771: if ($filetype eq 'sty') {
1772: $filecontents=&createnewsty();
1773: } elsif ($filetype eq 'js') {
1774: $filecontents=&createnewjs();
1775: } elsif ($filetype ne 'css' && $filetype ne 'txt' && $filetype ne 'tex') {
1776: $filecontents=&createnewhtml();
1777: }
1778: $env{'form.editmode'}='Edit'; #force edit mode
1779: }
1780: } else {
1781: unless ($env{'request.state'} eq 'published') {
1782: if ($filecontents=~/BEGIN LON-CAPA Internal/) {
1783: &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.'));
1784: }
1785: #
1786: # we are in construction space, see if edit mode forced
1787: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
1788: ['editmode']);
1789: }
1790: if (!$env{'form.editmode'} || $env{'form.viewmode'} || $env{'form.discardview'}) {
1791: if ($filetype eq 'html' || $filetype eq 'sty') {
1792: &Apache::structuretags::reset_problem_globals();
1793: $result = &Apache::lonxml::xmlparse($request,$target,
1794: $filecontents,'',%mystyle);
1795: # .html files may contain <problem> or <Task> need to clean
1796: # up if it did
1797: &Apache::structuretags::reset_problem_globals();
1798: &Apache::lonhomework::finished_parsing();
1799: } elsif ($filetype eq 'tex') {
1800: $result = &Apache::lontexconvert::converted(\$filecontents,
1801: $env{'form.texengine'});
1802: if ($env{'form.return_only_error_and_warning_counts'}) {
1803: $result = "$errorcount:$warningcount";
1804: }
1805: } else {
1806: $result = $filecontents;
1807: }
1808: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
1809: ['rawmode']);
1810: if ($env{'form.rawmode'}) { $result = $filecontents; }
1811: if (($env{'request.state'} eq 'construct') &&
1812: (($filetype eq 'css') || ($filetype eq 'js')) && ($ENV{'HTTP_REFERER'})) {
1813: if ($ENV{'HTTP_REFERER'} =~ m{^https?\://[^\/]+/priv/$LONCAPA::match_domain/$LONCAPA::match_username/[^\?]+\.(x?html?|swf)(|\?)[^\?]*$}) {
1814: $inhibit_menu = 1;
1815: }
1816: }
1817: if (($filetype ne 'html') &&
1818: (!$env{'form.return_only_error_and_warning_counts'}) &&
1819: (!$inhibit_menu)) {
1820: my $nochgview = 1;
1821: my $controls = '';
1822: if ($env{'request.state'} eq 'construct') {
1823: $controls = &Apache::loncommon::head_subbox(
1824: &Apache::loncommon::CSTR_pageheader()
1825: .&Apache::londefdef::edit_controls($nochgview));
1826: }
1827: if ($filetype ne 'sty' && $filetype ne 'tex') {
1828: $result =~ s/</</g;
1829: $result =~ s/>/>/g;
1830: $result = '<table class="LC_sty_begin">'.
1831: '<tr><td><b><pre>'.$result.
1832: '</pre></b></td></tr></table>';
1833: }
1834: my $brcrum;
1835: if ($env{'request.state'} eq 'construct') {
1836: $brcrum = [{'href' => &Apache::loncommon::authorspace($request->uri),
1837: 'text' => 'Authoring Space'},
1838: {'href' => '',
1839: 'text' => $breadcrumbtext}];
1840: } else {
1841: $brcrum = ''; # FIXME: Where are we?
1842: }
1843: my %options = ('bread_crumbs' => $brcrum,
1844: 'bgcolor' => '#FFFFFF');
1845: $result =
1846: &Apache::loncommon::start_page(undef,undef,\%options)
1847: .$controls
1848: .$result
1849: .&Apache::loncommon::end_page();
1850: }
1851: }
1852: }
1853:
1854: #
1855: # Edit action? Insert editing commands
1856: #
1857: unless (($env{'request.state'} eq 'published') || ($inhibit_menu)) {
1858: if ($env{'form.editmode'} && (!($env{'form.viewmode'})) && (!($env{'form.discardview'})))
1859: {
1860: my ($displayfile,$url,$symb,$itemtitle,$action);
1861: $displayfile=$request->uri;
1862: if ($request->uri =~ m{^/uploaded/}) {
1863: if ($env{'request.course.id'}) {
1864: if ($request->uri =~ m{^\Q/uploaded/$cdom/$cnum/supplemental/\E}) {
1865: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
1866: ['folderpath','title']);
1867: } elsif ($request->uri =~ m{^\Q/uploaded/$cdom/$cnum/portfolio/syllabus/\E(.+)$}) {
1868: my $filename = $1;
1869: if ($1 eq 'loncapa.html') {
1870: $displayfile = &mt('Syllabus (minimal template)');
1871: $action = $request->uri.'?forceedit=1';
1872: } else {
1873: $displayfile = &mt('Syllabus file: [_1]',$1);
1874: }
1875: $itemtitle = &mt('Syllabus');
1876: }
1877: }
1878: unless ($itemtitle) {
1879: ($symb,$itemtitle,$displayfile) =
1880: &get_courseupload_hierarchy($request->uri,
1881: $env{'form.folderpath'},
1882: $env{'form.title'});
1883: }
1884: } else {
1885: $displayfile=~s/^\/[^\/]*//;
1886: }
1887:
1888: my ($edit_info, $add_to_onload, $add_to_onresize)=
1889: &inserteditinfo($filecontents,$filetype,$displayfile,$symb,
1890: $itemtitle,$env{'form.folderpath'},$request->uri,$action);
1891:
1892: my %options =
1893: ('add_entries' =>
1894: {'onresize' => $add_to_onresize,
1895: 'onload' => $add_to_onload, });
1896: my $header;
1897: if ($env{'request.state'} eq 'construct') {
1898: $options{'bread_crumbs'} = [{
1899: 'href' => &Apache::loncommon::authorspace($request->uri),
1900: 'text' => 'Authoring Space'},
1901: {'href' => '',
1902: 'text' => $breadcrumbtext}];
1903: $header = &Apache::loncommon::head_subbox(
1904: &Apache::loncommon::CSTR_pageheader());
1905: }
1906: my $js =
1907: &Apache::edit::js_change_detection().
1908: &Apache::loncommon::resize_textarea_js();
1909: my $start_page = &Apache::loncommon::start_page(undef,$js,
1910: \%options);
1911: $result = $start_page
1912: .$header
1913: .&Apache::lonxml::message_location()
1914: .$edit_info
1915: .&Apache::loncommon::end_page();
1916: }
1917: }
1918: if ($filetype eq 'html') { &writeallows($request->uri); }
1919:
1920: &Apache::lonxml::add_messages(\$result);
1921: $request->print($result);
1922:
1923: return OK;
1924: }
1925:
1926: sub display_title {
1927: my $result;
1928: if ($env{'request.state'} eq 'construct') {
1929: my $title=&Apache::lonnet::gettitle();
1930: if (!defined($title) || $title eq '') {
1931: $title = $env{'request.filename'};
1932: $title = substr($title, rindex($title, '/') + 1);
1933: }
1934: $result = "<script type='text/javascript'>top.document.title = '$title - LON-CAPA "
1935: .&mt('Authoring Space')."';</script>";
1936: }
1937: return $result;
1938: }
1939:
1940: sub get_courseupload_hierarchy {
1941: my ($url,$folderpath,$title) = @_;
1942: my ($symb,$itemtitle,$displaypath);
1943: if ($env{'request.course.id'}) {
1944: if ($folderpath =~ /^supplemental/) {
1945: my @folders = split(/\&/,$folderpath);
1946: my @pathitems;
1947: while (@folders) {
1948: my $folder=shift(@folders);
1949: my $foldername=shift(@folders);
1950: $foldername =~ s/\:(\d*)\:(\w*)\:(\w*):(\d*)\:?(\d*)$//;
1951: push(@pathitems,&unescape($foldername));
1952: }
1953: if ($title) {
1954: push(@pathitems,&unescape($title));
1955: }
1956: $displaypath = join(' » ',@pathitems);
1957: } else {
1958: $symb = &Apache::lonnet::symbread($url);
1959: my ($map,$id,$res)=&Apache::lonnet::decode_symb($symb);
1960: my $navmap=Apache::lonnavmaps::navmap->new;
1961: if (ref($navmap)) {
1962: my $res = $navmap->getBySymb($symb);
1963: if (ref($res)) {
1964: my @pathitems =
1965: &Apache::loncommon::get_folder_hierarchy($navmap,$map,1);
1966: $itemtitle = $res->compTitle();
1967: push(@pathitems,$itemtitle);
1968: $displaypath = join(' » ',@pathitems);
1969: }
1970: }
1971: }
1972: }
1973: return ($symb,$itemtitle,$displaypath);
1974: }
1975:
1976: sub debug {
1977: if ($Apache::lonxml::debug eq "1") {
1978: $|=1;
1979: my $request=$Apache::lonxml::request;
1980: if (!$request) {
1981: eval { $request=Apache->request; };
1982: }
1983: if (!$request) {
1984: eval { $request=Apache2::RequestUtil->request; };
1985: }
1986: $request->print('<font size="-2"><pre>DEBUG:'.&HTML::Entities::encode($_[0],'<>&"')."</pre></font>\n");
1987: #&Apache::lonnet::logthis($_[0]);
1988: }
1989: }
1990:
1991: sub show_error_warn_msg {
1992: if (($env{'request.filename'} eq
1993: $Apache::lonnet::perlvar{'lonDocRoot'}.'/res/lib/templates/simpleproblem.problem') &&
1994: (&Apache::lonnet::allowed('mdc',$env{'request.course.id'}))) {
1995: return 1;
1996: }
1997: return (($Apache::lonxml::debug eq 1) ||
1998: ($env{'request.state'} eq 'construct') ||
1999: ($Apache::lonhomework::browse eq 'F'
2000: &&
2001: $env{'form.show_errors'} eq 'on'));
2002: }
2003:
2004: sub error {
2005: my @errors = @_;
2006:
2007: $errorcount++;
2008:
2009: $Apache::lonxml::internal_error=1;
2010:
2011: if (defined($Apache::inputtags::part)) {
2012: if ( @Apache::inputtags::response ) {
2013: push(@errors,
2014: &mt("This error occurred while processing response [_1] in part [_2]",
2015: $Apache::inputtags::response[-1],
2016: $Apache::inputtags::part));
2017: } else {
2018: push(@errors,
2019: &mt("This error occurred while processing part [_1]",
2020: $Apache::inputtags::part));
2021: }
2022: }
2023:
2024: if ( &show_error_warn_msg() ) {
2025: # If printing in construction space, put the error inside <pre></pre>
2026: push(@Apache::lonxml::error_messages,
2027: $Apache::lonxml::warnings_error_header
2028: .'<div class="LC_error">'
2029: .'<b>'.&mt('ERROR:').' </b>'.join("<br />\n",@errors)
2030: ."</div>\n");
2031: $Apache::lonxml::warnings_error_header='';
2032: } else {
2033: my $errormsg;
2034: my ($symb)=&Apache::lonnet::symbread();
2035: if ( !$symb ) {
2036: #public or browsers
2037: $errormsg=&mt("An error occurred while processing this resource. The author has been notified.");
2038: }
2039: my $host=$Apache::lonnet::perlvar{'lonHostID'};
2040: push(@errors,
2041: &mt("The error occurred on host [_1]",
2042: "<tt>$host</tt>"));
2043:
2044: my $msg = join('<br />', @errors);
2045:
2046: #notify author
2047: &Apache::lonmsg::author_res_msg($env{'request.filename'},$msg);
2048: #notify course
2049: if ( $symb && $env{'request.course.id'} ) {
2050: my $cnum=$env{'course.'.$env{'request.course.id'}.'.num'};
2051: my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
2052: my (undef,%users)=&Apache::lonmsg::decide_receiver(undef,0,1,1,1);
2053: my $declutter=&Apache::lonnet::declutter($env{'request.filename'});
2054: my $baseurl = &Apache::lonnet::clutter($declutter);
2055: my @userlist;
2056: foreach (keys(%users)) {
2057: my ($user,$domain) = split(/:/, $_);
2058: push(@userlist,"$user:$domain");
2059: my $key=$declutter.'_'.$user.'_'.$domain;
2060: my %lastnotified=&Apache::lonnet::get('nohist_xmlerrornotifications',
2061: [$key],
2062: $cdom,$cnum);
2063: my $now=time;
2064: if ($now-$lastnotified{$key}>86400) {
2065: my $title = &Apache::lonnet::gettitle($symb);
2066: my $sentmessage;
2067: &Apache::lonmsg::user_normal_msg($user,$domain,
2068: "Error [$title]",$msg,'',$baseurl,'','',
2069: \$sentmessage,$symb,$title,1);
2070: &Apache::lonnet::put('nohist_xmlerrornotifications',
2071: {$key => $now},
2072: $cdom,$cnum);
2073: }
2074: }
2075: if ($env{'request.role.adv'}) {
2076: $errormsg=&mt("An error occurred while processing this resource. The course personnel ([_1]) and the author have been notified.",join(', ',@userlist));
2077: } else {
2078: $errormsg=&mt("An error occurred while processing this resource. The instructor has been notified.");
2079: }
2080: }
2081: push(@Apache::lonxml::error_messages,"<span class=\"LC_warning\">$errormsg</span><br />");
2082: }
2083: }
2084:
2085: sub warning {
2086: $warningcount++;
2087:
2088: if ($env{'form.grade_target'} ne 'tex') {
2089: if ( &show_error_warn_msg() ) {
2090: push(@Apache::lonxml::warning_messages,
2091: $Apache::lonxml::warnings_error_header
2092: .'<div class="LC_warning">'
2093: .&mt('[_1]W[_2]ARNING','<b>','</b>')."<b>:</b> ".join('<br />',@_)
2094: ."</div>\n"
2095: );
2096: $Apache::lonxml::warnings_error_header='';
2097: }
2098: }
2099: }
2100:
2101: sub info {
2102: if ($env{'form.grade_target'} ne 'tex'
2103: && $env{'request.state'} eq 'construct') {
2104: push(@Apache::lonxml::info_messages,join('<br />',@_)."<br />\n");
2105: }
2106: }
2107:
2108: sub message_location {
2109: return '__LONCAPA_INTERNAL_MESSAGE_LOCATION__';
2110: }
2111:
2112: sub add_messages {
2113: my ($msg)=@_;
2114: my $result=join(' ',
2115: @Apache::lonxml::info_messages,
2116: @Apache::lonxml::error_messages,
2117: @Apache::lonxml::warning_messages);
2118: undef(@Apache::lonxml::info_messages);
2119: undef(@Apache::lonxml::error_messages);
2120: undef(@Apache::lonxml::warning_messages);
2121: $$msg=~s/__LONCAPA_INTERNAL_MESSAGE_LOCATION__/$result/;
2122: $$msg=~s/__LONCAPA_INTERNAL_MESSAGE_LOCATION__//g;
2123: }
2124:
2125: sub get_param {
2126: my ($param,$parstack,$safeeval,$context,$case_insensitive, $noelide) = @_;
2127:
2128: if ( ! $context ) { $context = -1; }
2129: my $args ='';
2130: if ( $#$parstack > (-2-$context) ) { $args=$$parstack[$context]; }
2131: if ( ! $Apache::lonxml::usestyle ) {
2132: $args=$Apache::lonxml::style_values.$args;
2133: }
2134:
2135:
2136: if ($noelide) {
2137: # $args =~ s/\\'/'/g;
2138: $args =~ s/'\$/'\\\$/g;
2139: }
2140:
2141: if ( ! $args ) { return undef; }
2142: if ( $case_insensitive ) {
2143: if ($args =~ s/(my (?:.*))(\$\Q$param\E[,\)])/$1.lc($2)/ei) {
2144:
2145: return &Apache::run::run("{$args;".'return $'.$param.'}',
2146: $safeeval); #'
2147: } else {
2148: return undef;
2149: }
2150: } else {
2151: if ( $args =~ /my .*\$\Q$param\E[,\)]/ ) {
2152:
2153: return &Apache::run::run("{$args;".'return $'.$param.'}',
2154: $safeeval); #'
2155: } else {
2156: return undef;
2157: }
2158: }
2159: }
2160:
2161: sub get_param_var {
2162: my ($param,$parstack,$safeeval,$context,$case_insensitive) = @_;
2163: if ( ! $context ) { $context = -1; }
2164: my $args ='';
2165: if ( $#$parstack > (-2-$context) ) { $args=$$parstack[$context]; }
2166: if ( ! $Apache::lonxml::usestyle ) {
2167: $args=$Apache::lonxml::style_values.$args;
2168: }
2169: &Apache::lonxml::debug("Args are $args param is $param");
2170: if ($case_insensitive) {
2171: if (! ($args=~s/(my (?:.*))(\$\Q$param\E[,\)])/$1.lc($2)/ei)) {
2172: return undef;
2173: }
2174: } elsif ( $args !~ /my .*\$\Q$param\E[,\)]/ ) { return undef; }
2175: my $value=&Apache::run::run("{$args;".'return $'.$param.'}',$safeeval); #'
2176: &Apache::lonxml::debug("first run is $value");
2177: if ($value =~ /^[\$\@\%][a-zA-Z_]\w*$/) {
2178: &Apache::lonxml::debug("doing second");
2179: my @result=&Apache::run::run("return $value",$safeeval,1);
2180: if (!defined($result[0])) {
2181: return $value
2182: } else {
2183: if (wantarray) { return @result; } else { return $result[0]; }
2184: }
2185: } else {
2186: return $value;
2187: }
2188: }
2189:
2190: sub register_insert_xml {
2191: my $parser = HTML::LCParser->new($Apache::lonnet::perlvar{'lonTabDir'}
2192: .'/insertlist.xml');
2193: my ($tagnum,$in_help)=(0,0);
2194: my @alltags;
2195: my $tag;
2196: while (my $token = $parser->get_token()) {
2197: if ($token->[0] eq 'S') {
2198: my $key;
2199: if ($token->[1] eq 'tag') {
2200: $tag = $token->[2]{'name'};
2201: if (defined($tag)) {
2202: $insertlist{$tagnum.'.tag'} = $tag;
2203: $insertlist{$tag.'.num'} = $tagnum;
2204: push(@alltags,$tag);
2205: }
2206: } elsif ($in_help && $token->[1] eq 'file') {
2207: $key = $tag.'.helpfile';
2208: } elsif ($in_help && $token->[1] eq 'description') {
2209: $key = $tag.'.helpdesc';
2210: } elsif ($token->[1] eq 'description' ||
2211: $token->[1] eq 'color' ||
2212: $token->[1] eq 'show' ) {
2213: $key = $tag.'.'.$token->[1];
2214: } elsif ($token->[1] eq 'insert_sub') {
2215: $key = $tag.'.function';
2216: } elsif ($token->[1] eq 'help') {
2217: $in_help=1;
2218: } elsif ($token->[1] eq 'allow') {
2219: $key = $tag.'.allow';
2220: }
2221: if (defined($key)) {
2222: $insertlist{$key} = $parser->get_text();
2223: $insertlist{$key} =~ s/(^\s*|\s*$ )//gx;
2224: }
2225: } elsif ($token->[0] eq 'E') {
2226: if ($token->[1] eq 'tag') {
2227: undef($tag);
2228: $tagnum++;
2229: } elsif ($token->[1] eq 'help') {
2230: undef($in_help);
2231: }
2232: }
2233: }
2234:
2235: # parse the allows and ignore tags set to <show>no</show>
2236: foreach my $tag (@alltags) {
2237: next if (!exists($insertlist{$tag.'.allow'}));
2238: my $allow = $insertlist{$tag.'.allow'};
2239: foreach my $element (split(',',$allow)) {
2240: $element =~ s/(^\s*|\s*$ )//gx;
2241: if (!exists($insertlist{$element.'.show'})
2242: || $insertlist{$element.'.show'} ne 'no') {
2243: push(@{ $insertlist{$tag.'.which'} },$element);
2244: }
2245: }
2246: }
2247: }
2248:
2249: sub register_insert {
2250: return ®ister_insert_xml(@_);
2251: # &dump_insertlist('2');
2252: }
2253:
2254: sub dump_insertlist {
2255: my ($ext) = @_;
2256: open(XML,">/tmp/insertlist.xml.$ext");
2257: print XML ("<insertlist>");
2258: my $i=0;
2259:
2260: while (exists($insertlist{"$i.tag"})) {
2261: my $tag = $insertlist{"$i.tag"};
2262: print XML ("
2263: \t<tag name=\"$tag\">");
2264: if (defined($insertlist{"$tag.description"})) {
2265: print XML ("
2266: \t\t<description>".$insertlist{"$tag.description"}."</description>");
2267: }
2268: if (defined($insertlist{"$tag.color"})) {
2269: print XML ("
2270: \t\t<color>".$insertlist{"$tag.color"}."</color>");
2271: }
2272: if (defined($insertlist{"$tag.function"})) {
2273: print XML ("
2274: \t\t<insert_sub>".$insertlist{"$tag.function"}."</insert_sub>");
2275: }
2276: if (defined($insertlist{"$tag.show"})
2277: && $insertlist{"$tag.show"} ne 'yes') {
2278: print XML ("
2279: \t\t<show>".$insertlist{"$tag.show"}."</show>");
2280: }
2281: if (defined($insertlist{"$tag.helpfile"})) {
2282: print XML ("
2283: \t\t<help>
2284: \t\t\t<file>".$insertlist{"$tag.helpfile"}."</file>");
2285: if ($insertlist{"$tag.helpdesc"} ne '') {
2286: print XML ("
2287: \t\t\t<description>".$insertlist{"$tag.helpdesc"}."</description>");
2288: }
2289: print XML ("
2290: \t\t</help>");
2291: }
2292: if (defined($insertlist{"$tag.which"})) {
2293: print XML ("
2294: \t\t<allow>".join(',',sort(@{ $insertlist{"$tag.which"} }))."</allow>");
2295: }
2296: print XML ("
2297: \t</tag>");
2298: $i++;
2299: }
2300: print XML ("\n</insertlist>\n");
2301: close(XML);
2302: }
2303:
2304: sub description {
2305: my ($token)=@_;
2306: my $tag = &get_tag($token);
2307: return $insertlist{$tag.'.description'};
2308: }
2309:
2310: # Returns a list containing the help file, and the description
2311: sub helpinfo {
2312: my ($token)=@_;
2313: my $tag = &get_tag($token);
2314: return ($insertlist{$tag.'.helpfile'}, &mt($insertlist{$tag.'.helpdesc'}));
2315: }
2316:
2317: sub get_tag {
2318: my ($token)=@_;
2319: my $tagnum;
2320: my $tag=$token->[1];
2321: foreach my $namespace (reverse(@Apache::lonxml::namespace)) {
2322: my $testtag = $namespace.'::'.$tag;
2323: $tagnum = $insertlist{"$testtag.num"};
2324: last if (defined($tagnum));
2325: }
2326: if (!defined($tagnum)) {
2327: $tagnum = $Apache::lonxml::insertlist{"$tag.num"};
2328: }
2329: return $insertlist{"$tagnum.tag"};
2330: }
2331:
2332: ############################################################
2333: # PDF-FORM-METHODS
2334:
2335: =pod
2336:
2337: =item &print_pdf_radiobutton(fieldname, value)
2338:
2339: Returns a latexline to generate a PDF-Form-Radiobutton.
2340: Note: Radiobuttons with equal names are automaticly grouped
2341: in a selection-group.
2342:
2343: $fieldname: PDF internalname of the radiobutton(group)
2344: $value: Value of radiobutton
2345:
2346: =cut
2347: sub print_pdf_radiobutton {
2348: my ($fieldname, $value) = @_;
2349: return '\radioButton[\symbolchoice{circle}]{'
2350: .$fieldname.'}{10bp}{10bp}{'.$value.'}';
2351: }
2352:
2353:
2354: =pod
2355:
2356: =item &print_pdf_start_combobox(fieldname)
2357:
2358: Starts a latexline to generate a PDF-Form-Combobox with text.
2359:
2360: $fieldname: PDF internal name of the Combobox
2361:
2362: =cut
2363: sub print_pdf_start_combobox {
2364: my $result;
2365: my ($fieldName) = @_;
2366: $result .= '\begin{tabularx}{\textwidth}{p{2.5cm}X}'."\n";
2367: $result .= '\comboBox[]{'.$fieldName.'}{2.3cm}{14bp}{'; #
2368:
2369: return $result;
2370: }
2371:
2372:
2373: =pod
2374:
2375: =item &print_pdf_add_combobox_option(options)
2376:
2377: Generates a latexline to add Options to a PDF-Form-ComboBox.
2378:
2379: $option: PDF internal name of the Combobox-Option
2380:
2381: =cut
2382: sub print_pdf_add_combobox_option {
2383:
2384: my $result;
2385: my ($option) = @_;
2386:
2387: $result .= '('.$option.')';
2388:
2389: return $result;
2390: }
2391:
2392:
2393: =pod
2394:
2395: =item &print_pdf_end_combobox(text) {
2396:
2397: Returns latexcode to end a PDF-Form-Combobox with text.
2398:
2399: =cut
2400: sub print_pdf_end_combobox {
2401: my $result;
2402: my ($text) = @_;
2403:
2404: $result .= '}&'.$text."\\\\\n";
2405: $result .= '\end{tabularx}' . "\n";
2406: $result .= '\hspace{2mm}' . "\n";
2407: return $result;
2408: }
2409:
2410:
2411: =pod
2412:
2413: =item &print_pdf_hiddenField(fieldname, user, domain)
2414:
2415: Returns a latexline to generate a PDF-Form-hiddenField with userdata.
2416:
2417: $fieldname label for hiddentextfield
2418: $user: name of user
2419: $domain: domain of user
2420:
2421: =cut
2422: sub print_pdf_hiddenfield {
2423: my $result;
2424: my ($fieldname, $user, $domain) = @_;
2425:
2426: $result .= '\textField [\F{\FHidden}\F{-\FPrint}\V{'.$domain.'&'.$user.'}]{'.$fieldname.'}{0in}{0in}'."\n";
2427:
2428: return $result;
2429: }
2430:
2431: 1;
2432: __END__
2433:
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