1: # The LearningOnline Network with CAPA
2: # XML Parser Module
3: #
4: # $Id: lonxml.pm,v 1.577 2025/02/19 23:39:38 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 $warningcount);
63: use strict;
64: use LONCAPA;
65: use HTML::LCParser();
66: use HTML::TreeBuilder();
67: use HTML::Entities();
68: use Safe();
69: use Safe::Hole();
70: use Math::Cephes();
71: use Math::Random();
72: use Math::Calculus::Expression();
73: use Number::FormatEng();
74: use Opcode();
75: use POSIX qw(strftime);
76: use Time::HiRes qw( gettimeofday tv_interval );
77: use Symbol();
78:
79: sub register {
80: my ($space,@taglist) = @_;
81: foreach my $temptag (@taglist) {
82: push(@{ $Apache::lonxml::alltags{$temptag} },$space);
83: }
84: }
85:
86: sub deregister {
87: my ($space,@taglist) = @_;
88: foreach my $temptag (@taglist) {
89: my $tempspace = $Apache::lonxml::alltags{$temptag}[-1];
90: if ($tempspace eq $space) {
91: pop(@{ $Apache::lonxml::alltags{$temptag} });
92: }
93: }
94: #&printalltags();
95: }
96:
97: use Apache::Constants qw(:common);
98: use Apache::lontexconvert();
99: use Apache::style();
100: use Apache::run();
101: use Apache::londefdef();
102: use Apache::scripttag();
103: use Apache::languagetags();
104: use Apache::edit();
105: use Apache::inputtags();
106: use Apache::outputtags();
107: use Apache::lonnet;
108: use Apache::File();
109: use Apache::loncommon();
110: use Apache::lonfeedback();
111: use Apache::lonmsg();
112: use Apache::loncacc();
113: use Apache::lonmaxima();
114: use Apache::lonr();
115: use Apache::lonlocal;
116: use Apache::lonhtmlcommon();
117: use Apache::functionplotresponse();
118: use Apache::lonnavmaps();
119:
120: #==================================== Main subroutine: xmlparse
121:
122: #debugging control, to turn on debugging modify the correct handler
123:
124: $Apache::lonxml::debug=0;
125:
126: # keeps count of the number of warnings and errors generated in a parse
127: $warningcount=0;
128: $errorcount=0;
129:
130: #path to the directory containing the file currently being processed
131: @pwd=();
132:
133: #these two are used for capturing a subset of the output for later processing,
134: #don't touch them directly use &startredirection and &endredirection
135: @outputstack = ();
136: $redirection = 0;
137:
138: #controls wheter the <import> tag actually does
139: $import = 1;
140: @extlinks=();
141:
142: # meta mode is a bit weird only some output is to be turned off
143: #<output> tag turns metamode off (defined in londefdef.pm)
144: $metamode = 0;
145:
146: # turns on and of run::evaluate actually derefencing var refs
147: $evaluate = 1;
148:
149: # data structure for edit mode, determines what tags can go into what other tags
150: %insertlist=();
151:
152: # stores the list of active tag namespaces
153: @namespace=();
154:
155: # stores all Scrit Vars displays for later showing
156: my @script_var_displays=();
157:
158: # a pointer the the Apache request object
159: $Apache::lonxml::request='';
160:
161: # a problem number counter, and check on ether it is used
162: $Apache::lonxml::counter=1;
163: $Apache::lonxml::counter_changed=0;
164:
165: # Part counter hash. In analysis mode, the
166: # problems can use this to record which parts increment the counter
167: # by how much. The counter subs will maintain this hash via
168: # their optional part parameters. Note that the assumption is that
169: # analysis is done in one request and therefore it is not necessary to
170: # save this information request-to-request.
171:
172:
173: %Apache::lonxml::counters_per_part = ();
174:
175: #internal check on whether to look at style defs
176: $Apache::lonxml::usestyle=1;
177:
178: #locations used to store the parameter string for style substitutions
179: $Apache::lonxml::style_values='';
180: $Apache::lonxml::style_end_values='';
181:
182: #array of ssi calls that need to occur after we are done parsing
183: @Apache::lonxml::ssi_info=();
184:
185: #should we do the postag variable interpolation
186: $Apache::lonxml::post_evaluate=1;
187:
188: #a header message to emit in the case of any generated warning or errors
189: $Apache::lonxml::warnings_error_header='';
190:
191: # Control whether or not LaTeX symbols should be substituted for their
192: # \ style equivalents...this may be turned off e.g. in an verbatim
193: # environment.
194:
195: $Apache::lonxml::substitute_LaTeX_symbols = 1; # Starts out on.
196:
197: sub enable_LaTeX_substitutions {
198: $Apache::lonxml::substitute_LaTeX_symbols = 1;
199: }
200: sub disable_LaTeX_substitutions {
201: $Apache::lonxml::substitute_LaTeX_symbols = 0;
202: }
203:
204: sub xmlend {
205: my ($target,$parser)=@_;
206: my $mode='xml';
207: my $status='OPEN';
208: if ($Apache::lonhomework::parsing_a_problem ||
209: $Apache::lonhomework::parsing_a_task ) {
210: $mode='problem';
211: $status=$Apache::inputtags::status[-1];
212: }
213: my $discussion;
214: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
215: ['LONCAPA_INTERNAL_no_discussion']);
216: if (
217: ( (!exists($env{'form.LONCAPA_INTERNAL_no_discussion'}))
218: || ($env{'form.LONCAPA_INTERNAL_no_discussion'} ne 'true')
219: )
220: && ($env{'form.inhibitmenu'} ne 'yes')
221: ) {
222: $discussion=&Apache::lonfeedback::list_discussion($mode,$status);
223: }
224: if ($target eq 'tex') {
225: $discussion.='<tex>\keephidden{ENDOFPROBLEM}\vskip 0.5mm\noindent\makebox[\textwidth/$number_of_columns][b]{\hrulefill}\end{document}</tex>';
226: &Apache::lonxml::newparser($parser,\$discussion,'');
227: return '';
228: }
229:
230: return $discussion;
231: }
232:
233: sub printalltags {
234: foreach my $temp (sort(keys(%Apache::lonxml::alltags))) {
235: &Apache::lonxml::debug("$temp -- ".
236: join(',',@{ $Apache::lonxml::alltags{$temp} }));
237: }
238: }
239:
240: sub xmlparse {
241: my ($request,$target,$content_file_string,$safeinit,%style_for_target) = @_;
242:
243: &setup_globals($request,$target);
244: &Apache::inputtags::initialize_inputtags();
245: &Apache::bridgetask::initialize_bridgetask();
246: &Apache::outputtags::initialize_outputtags();
247: &Apache::edit::initialize_edit();
248: &Apache::londefdef::initialize_londefdef();
249:
250: #
251: # do we have a course style file?
252: #
253:
254: if ($env{'request.course.id'} && $env{'request.state'} ne 'construct') {
255: my $bodytext=
256: $env{'course.'.$env{'request.course.id'}.'.default_xml_style'};
257: if ($bodytext) {
258: foreach my $file (split(',',$bodytext)) {
259: my $location=&Apache::lonnet::filelocation('',$file);
260: my $styletext=&Apache::lonnet::getfile($location);
261: if ($styletext ne '-1') {
262: %style_for_target = (%style_for_target,
263: &Apache::style::styleparser($target,$styletext));
264: }
265: }
266: }
267: } elsif ($env{'construct.style'}
268: && ($env{'request.state'} eq 'construct')) {
269: my $location=&Apache::lonnet::filelocation('',$env{'construct.style'});
270: my $styletext=&Apache::lonnet::getfile($location);
271: if ($styletext ne '-1') {
272: %style_for_target = (%style_for_target,
273: &Apache::style::styleparser($target,$styletext));
274: }
275: }
276: #&printalltags();
277: my @pars = ();
278: my $pwd=$env{'request.filename'};
279: $pwd =~ s:/[^/]*$::;
280: &newparser(\@pars,\$content_file_string,$pwd);
281:
282: my $safeeval = new Safe;
283: my $safehole = new Safe::Hole;
284: &init_safespace($target,$safeeval,$safehole,$safeinit);
285: #-------------------- Redefinition of the target in the case of compound target
286:
287: ($target, my @tenta) = split('&&',$target);
288:
289: my @stack = ();
290: my @parstack = ();
291: &initdepth();
292: &init_alarm();
293: my $finaloutput = &inner_xmlparse($target,\@stack,\@parstack,\@pars,
294: $safeeval,\%style_for_target,1);
295:
296: if (@stack) {
297: &warning(&mt('At end of file some tags were still left unclosed:').
298: ' <tt><'.join('></tt>, <tt><',reverse(@stack)).
299: '></tt>');
300: }
301: if ($env{'request.uri'}) {
302: &writeallows($env{'request.uri'});
303: }
304: &do_registered_ssi();
305: if ($Apache::lonxml::counter_changed) { &store_counter() }
306:
307: &clean_safespace($safeeval);
308:
309: if (@script_var_displays) {
310: if ($finaloutput =~ m{</body>\s*</html>\s*$}s) {
311: my $scriptoutput = join('',@script_var_displays);
312: $finaloutput=~s{(</body>\s*</html>)\s*$}{$scriptoutput$1}s;
313: } else {
314: $finaloutput .= join('',@script_var_displays);
315: }
316: undef(@script_var_displays);
317: }
318: &init_state();
319: if ($env{'form.return_only_error_and_warning_counts'}) {
320: if ($env{'request.filename'}=~/\.(html|htm|xml)$/i) {
321: my $error=&verify_html($content_file_string);
322: if ($error) { $errorcount++; }
323: }
324: return "$errorcount:$warningcount";
325: }
326: return $finaloutput;
327: }
328:
329: sub latex_special_symbols {
330: my ($string,$where)=@_;
331: #
332: # If e.g. in verbatim mode, then don't substitute.
333: # but return original string.
334: #
335: if (!($Apache::lonxml::substitute_LaTeX_symbols)) {
336: return $string;
337: }
338: if ($where eq 'header') {
339: $string =~ s/\\/\$\\backslash\$/g; # \ -> $\backslash$ per LaTex line by line pg 10.
340: $string =~ s/(\$|%|\{|\})/\\$1/g;
341: $string=&Apache::lonprintout::character_chart($string);
342: # any & or # leftover should be safe to just escape
343: $string=~s/([^\\])\&/$1\\\&/g;
344: $string=~s/([^\\])\#/$1\\\#/g;
345: $string =~ s/_/\\_/g; # _ -> \_
346: $string =~ s/\^/\\\^{}/g; # ^ -> \^{}
347: } else {
348: $string=~s/\\/\\ensuremath{\\backslash}/g;
349: $string=~s/\\\%|\%/\\\%/g;
350: $string=~s/\\\{|\{/\\{/g;
351: $string=~s/\\}|}/\\}/g;
352: $string=~s/\\ensuremath\\\{\\backslash\\}/\\ensuremath{\\backslash}/g;
353: $string=~s/\\\$|\$/\\\$/g;
354: $string=~s/\\\_|\_/\\\_/g;
355: $string=~s/([^\\]|^)(\~|\^)/$1\\$2\\strut /g;
356: $string=~s/(>|<)/\\ensuremath\{$1\}/g; #more or less
357: $string=&Apache::lonprintout::character_chart($string);
358: # any & or # leftover should be safe to just escape
359: $string=~s/\\\&|\&/\\\&/g;
360: $string=~s/\\\#|\#/\\\#/g;
361: $string=~s/\|/\$\\mid\$/g;
362: #single { or } How to escape?
363: }
364: return $string;
365: }
366:
367: sub inner_xmlparse {
368: my ($target,$stack,$parstack,$pars,$safeeval,$style_for_target,$start)=@_;
369: my $finaloutput = '';
370: my $result;
371: my $token;
372: my $dontpop=0;
373: my $lastdontpop;
374: my $lastendtag;
375: my $startredirection = $Apache::lonxml::redirection;
376: while ( $#$pars > -1 ) {
377: while ($token = $$pars['-1']->get_token) {
378: if (($token->[0] eq 'T') || ($token->[0] eq 'C') ) {
379: if ($metamode<1) {
380: my $text=$token->[1];
381: if ($token->[0] eq 'C' && $target eq 'tex') {
382: $text = '';
383: # $text = '%'.$text."\n";
384: }
385: $result.=$text;
386: }
387: } elsif (($token->[0] eq 'D')) {
388: if ($metamode<1 && $target eq 'web') {
389: my $text=$token->[1];
390: $result.=$text;
391: }
392: } elsif ($token->[0] eq 'PI') {
393: if ($metamode<1 && $target eq 'web') {
394: $result=$token->[2];
395: }
396: } elsif ($token->[0] eq 'S') {
397: # add tag to stack
398: push (@$stack,$token->[1]);
399: # add parameters list to another stack
400: push (@$parstack,&parstring($token));
401: &increasedepth($token);
402: if ($Apache::lonxml::usestyle &&
403: exists($$style_for_target{$token->[1]})) {
404: $Apache::lonxml::usestyle=0;
405: my $string=$$style_for_target{$token->[1]}.
406: '<LONCAPA_INTERNAL_TURN_STYLE_ON />';
407: &Apache::lonxml::newparser($pars,\$string);
408: $Apache::lonxml::style_values=$$parstack[-1];
409: $Apache::lonxml::style_end_values=$$parstack[-1];
410: } else {
411: $result = &callsub("start_$token->[1]", $target, $token, $stack,
412: $parstack, $pars, $safeeval, $style_for_target);
413: }
414: } elsif ($token->[0] eq 'E') {
415: if ($Apache::lonxml::usestyle &&
416: exists($$style_for_target{'/'."$token->[1]"})) {
417: $Apache::lonxml::usestyle=0;
418: my $string=$$style_for_target{'/'.$token->[1]}.
419: '<LONCAPA_INTERNAL_TURN_STYLE_ON end="'.$token->[1].'" />';
420: &Apache::lonxml::newparser($pars,\$string);
421: $Apache::lonxml::style_values=$Apache::lonxml::style_end_values;
422: $Apache::lonxml::style_end_values='';
423: $dontpop=1;
424: } else {
425: #clear out any tags that didn't end
426: while ($token->[1] ne $$stack['-1'] && ($#$stack > -1)) {
427: my $lasttag=$$stack[-1];
428: if ($token->[1] =~ /^\Q$lasttag\E$/i) {
429: &Apache::lonxml::warning(&mt('Using tag [_1] on line [_2] as end tag to [_3]','</'.$token->[1].'>','.$token->[3].','<'.$$stack[-1].'>'));
430: last;
431: } else {
432: &Apache::lonxml::warning(&mt('Found tag [_1] on line [_2] when looking for [_3] in file.','</'.$token->[1].'>',$token->[3],'</'.$$stack[-1].'>'));
433: &end_tag($stack,$parstack,$token);
434: }
435: }
436: $result = &callsub("end_$token->[1]", $target, $token, $stack,
437: $parstack, $pars,$safeeval, $style_for_target);
438: }
439: } else {
440: &Apache::lonxml::error("Unknown token event :$token->[0]:$token->[1]:");
441: }
442: #evaluate variable refs in result
443: if ($Apache::lonxml::post_evaluate &&$result ne "") {
444: my $extras;
445: if (!$Apache::lonxml::usestyle) {
446: $extras=$Apache::lonxml::style_values;
447: }
448: if ( $#$parstack > -1 ) {
449: $result=&Apache::run::evaluate($result,$safeeval,$extras.$$parstack[-1]);
450: } else {
451: $result= &Apache::run::evaluate($result,$safeeval,$extras);
452: }
453: }
454: $Apache::lonxml::post_evaluate=1;
455:
456: if (($token->[0] eq 'T') || ($token->[0] eq 'C') || ($token->[0] eq 'D') ) {
457: #Style file definitions should be correct
458: if ($target eq 'tex' && ($Apache::lonxml::usestyle)) {
459: $result=&latex_special_symbols($result);
460: }
461: }
462:
463: if ($Apache::lonxml::redirection) {
464: $Apache::lonxml::outputstack['-1'] .= $result;
465: } else {
466: $finaloutput.=$result;
467: }
468: $result = '';
469:
470: if ($token->[0] eq 'E') {
471: if ($dontpop) {
472: $lastdontpop = $token;
473: } else {
474: $lastendtag = $token->[1];
475: &end_tag($stack,$parstack,$token);
476: }
477: }
478: $dontpop=0;
479: }
480: if ($#$pars > -1) {
481: pop @$pars;
482: pop @Apache::lonxml::pwd;
483: }
484: }
485:
486: if (($#$stack == 0) && ($stack->[0] eq 'physnet') && ($target eq 'web') &&
487: ($lastendtag eq 'LONCAPA_INTERNAL_TURN_STYLE_ON')) {
488: if ((ref($lastdontpop) eq 'ARRAY') && ($lastdontpop->[1] eq 'physnet')) {
489: &end_tag($stack,$parstack,$lastdontpop);
490: }
491: }
492:
493: # if ($target eq 'meta') {
494: # $finaloutput.=&endredirection;
495: # }
496:
497: if ( $start && $target eq 'grade') { &endredirection(); }
498: if ( $Apache::lonxml::redirection > $startredirection) {
499: while ($Apache::lonxml::redirection > $startredirection) {
500: $finaloutput .= &endredirection();
501: }
502: }
503: if (($ENV{'QUERY_STRING'}) && ($target eq 'web')) {
504: $finaloutput=&afterburn($finaloutput);
505: }
506: if ($target eq 'modified') {
507: # if modfied, handle startpart and endpart
508: $finaloutput=~s/\<startpartmarker[^\>]*\>(.*)\<endpartmarker[^\>]*\>/<part>$1<\/part>/gs;
509: }
510: return $finaloutput;
511: }
512:
513: ##
514: ## Looks to see if there is a subroutine defined for this tag. If so, call it,
515: ## otherwise do not call it as we do not know what it is.
516: ##
517: sub callsub {
518: my ($sub,$target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
519: my $currentstring='';
520: my $nodefault;
521: {
522: my $sub1;
523: no strict 'refs';
524: my $tag=$token->[1];
525: # get utterly rid of extended html tags
526: if ($tag=~/^x\-/i) { return ''; }
527: my $space=$Apache::lonxml::alltags{$tag}[-1];
528: if (!$space) {
529: $tag=~tr/A-Z/a-z/;
530: $sub=~tr/A-Z/a-z/;
531: $space=$Apache::lonxml::alltags{$tag}[-1]
532: }
533:
534: my $deleted=0;
535: if (($token->[0] eq 'S') && ($target eq 'modified')) {
536: $deleted=&Apache::edit::handle_delete($space,$target,$token,$tagstack,
537: $parstack,$parser,$safeeval,
538: $style);
539: }
540: if (!$deleted) {
541: if ($space) {
542: #&Apache::lonxml::debug("Calling sub $sub in $space $metamode");
543: $sub1="$space\:\:$sub";
544: ($currentstring,$nodefault) = &$sub1($target,$token,$tagstack,
545: $parstack,$parser,$safeeval,
546: $style);
547: } else {
548: if ($target eq 'tex') {
549: # throw away tag name
550: return '';
551: }
552: #&Apache::lonxml::debug("NOT Calling sub $sub in $space $metamode");
553: if ($metamode <1) {
554: if (defined($token->[4]) && ($metamode < 1)) {
555: $currentstring = $token->[4];
556: } else {
557: $currentstring = $token->[2];
558: }
559: }
560: }
561: # &Apache::lonxml::debug("nodefalt:$nodefault:");
562: if ($currentstring eq '' && $nodefault eq '') {
563: if ($target eq 'edit') {
564: #&Apache::lonxml::debug("doing default edit for $token->[1]");
565: if ($token->[0] eq 'S') {
566: $currentstring = &Apache::edit::tag_start($target,$token);
567: } elsif ($token->[0] eq 'E') {
568: $currentstring = &Apache::edit::tag_end($target,$token);
569: }
570: }
571: }
572: if ($target eq 'modified' && $nodefault eq '') {
573: if ($currentstring eq '') {
574: if ($token->[0] eq 'S') {
575: $currentstring = $token->[4];
576: } elsif ($token->[0] eq 'E') {
577: $currentstring = $token->[2];
578: } else {
579: $currentstring = $token->[2];
580: }
581: }
582: if ($token->[0] eq 'S') {
583: $currentstring.=&Apache::edit::handle_insert();
584: } elsif ($token->[0] eq 'E') {
585: $currentstring.=&Apache::edit::handle_insertafter($token->[1]);
586: }
587: }
588: }
589: use strict 'refs';
590: }
591: return $currentstring;
592: }
593:
594: {
595: my %state;
596:
597: sub init_state {
598: undef(%state);
599: }
600:
601: sub set_state {
602: my ($key,$value) = @_;
603: $state{$key} = $value;
604: return $value;
605: }
606: sub get_state {
607: my ($key) = @_;
608: return $state{$key};
609: }
610: }
611:
612: sub setup_globals {
613: my ($request,$target)=@_;
614: $Apache::lonxml::request=$request;
615: $errorcount=0;
616: $warningcount=0;
617: $Apache::lonxml::internal_error=0;
618: $Apache::lonxml::default_homework_loaded=0;
619: $Apache::lonxml::usestyle=1;
620: &init_counter();
621: &clear_bubble_lines_for_part();
622: &init_state();
623: &set_state('target',$target);
624: @Apache::lonxml::pwd=();
625: @Apache::lonxml::extlinks=();
626: @script_var_displays=();
627: @Apache::lonxml::ssi_info=();
628: $Apache::lonxml::post_evaluate=1;
629: $Apache::lonxml::warnings_error_header='';
630: $Apache::lonxml::substitute_LaTeX_symbols = 1;
631: if ($target eq 'meta') {
632: $Apache::lonxml::redirection = 0;
633: $Apache::lonxml::metamode = 1;
634: $Apache::lonxml::evaluate = 1;
635: $Apache::lonxml::import = 0;
636: } elsif ($target eq 'answer') {
637: $Apache::lonxml::redirection = 0;
638: $Apache::lonxml::metamode = 1;
639: $Apache::lonxml::evaluate = 1;
640: $Apache::lonxml::import = 1;
641: } elsif ($target eq 'grade') {
642: &startredirection(); #ended in inner_xmlparse on exit
643: $Apache::lonxml::metamode = 0;
644: $Apache::lonxml::evaluate = 1;
645: $Apache::lonxml::import = 1;
646: } elsif ($target eq 'modified') {
647: $Apache::lonxml::redirection = 0;
648: $Apache::lonxml::metamode = 0;
649: $Apache::lonxml::evaluate = 0;
650: $Apache::lonxml::import = 0;
651: } elsif ($target eq 'edit') {
652: $Apache::lonxml::redirection = 0;
653: $Apache::lonxml::metamode = 0;
654: $Apache::lonxml::evaluate = 0;
655: $Apache::lonxml::import = 0;
656: } elsif ($target eq 'analyze') {
657: $Apache::lonxml::redirection = 0;
658: $Apache::lonxml::metamode = 0;
659: $Apache::lonxml::evaluate = 1;
660: $Apache::lonxml::import = 1;
661: } else {
662: $Apache::lonxml::redirection = 0;
663: $Apache::lonxml::metamode = 0;
664: $Apache::lonxml::evaluate = 1;
665: $Apache::lonxml::import = 1;
666: }
667: }
668:
669: sub init_safespace {
670: my ($target,$safeeval,$safehole,$safeinit) = @_;
671: $safeeval->reval('use LaTeX::Table;');
672: $safeeval->deny_only(':dangerous');
673: $safeeval->reval('use LONCAPA::LCMathComplex;');
674: $safeeval->permit_only(":default");
675: $safeeval->permit("entereval");
676: $safeeval->permit("hintseval");
677: $safeeval->permit(":base_math");
678: $safeeval->permit("sort");
679: $safeeval->permit("time");
680: $safeeval->permit("caller");
681: $safeeval->deny("rand");
682: $safeeval->deny("srand");
683: $safeeval->deny(":base_io");
684: $safehole->wrap(\&Apache::scripttag::xmlparse,$safeeval,'&xmlparse');
685: $safehole->wrap(\&Apache::outputtags::multipart,$safeeval,'&multipart');
686: $safehole->wrap(\&Apache::lonnet::EXT,$safeeval,'&EXT');
687: $safehole->wrap(\&Apache::chemresponse::chem_standard_order,$safeeval,
688: '&chem_standard_order');
689: $safehole->wrap(\&Apache::response::check_status,$safeeval,'&check_status');
690: $safehole->wrap(\&Apache::response::implicit_multiplication,$safeeval,'&implicit_multiplication');
691:
692: $safehole->wrap(\&Apache::lonmaxima::maxima_eval,$safeeval,'&maxima_eval');
693: $safehole->wrap(\&Apache::lonmaxima::maxima_check,$safeeval,'&maxima_check');
694: $safehole->wrap(\&Apache::lonmaxima::maxima_cas_formula_fix,$safeeval,
695: '&maxima_cas_formula_fix');
696:
697: $safehole->wrap(\&Apache::lonr::r_eval,$safeeval,'&r_eval');
698: $safehole->wrap(\&Apache::lonr::Rentry,$safeeval,'&Rentry');
699: $safehole->wrap(\&Apache::lonr::Rarray,$safeeval,'&Rarray');
700: $safehole->wrap(\&Apache::lonr::r_check,$safeeval,'&r_check');
701: $safehole->wrap(\&Apache::lonr::r_cas_formula_fix,$safeeval,
702: '&r_cas_formula_fix');
703:
704: $safehole->wrap(\&Apache::caparesponse::capa_formula_fix,$safeeval,
705: '&capa_formula_fix');
706:
707: $safehole->wrap(\&Apache::lonlocal::locallocaltime,$safeeval,
708: '&locallocaltime');
709:
710: $safehole->wrap(\&Math::Cephes::asin,$safeeval,'&asin');
711: $safehole->wrap(\&Math::Cephes::acos,$safeeval,'&acos');
712: $safehole->wrap(\&Math::Cephes::atan,$safeeval,'&atan');
713: $safehole->wrap(\&Math::Cephes::sinh,$safeeval,'&sinh');
714: $safehole->wrap(\&Math::Cephes::cosh,$safeeval,'&cosh');
715: $safehole->wrap(\&Math::Cephes::tanh,$safeeval,'&tanh');
716: $safehole->wrap(\&Math::Cephes::asinh,$safeeval,'&asinh');
717: $safehole->wrap(\&Math::Cephes::acosh,$safeeval,'&acosh');
718: $safehole->wrap(\&Math::Cephes::atanh,$safeeval,'&atanh');
719: $safehole->wrap(\&Math::Cephes::erf,$safeeval,'&erf');
720: $safehole->wrap(\&Math::Cephes::erfc,$safeeval,'&erfc');
721: $safehole->wrap(\&Math::Cephes::j0,$safeeval,'&j0');
722: $safehole->wrap(\&Math::Cephes::j1,$safeeval,'&j1');
723: $safehole->wrap(\&Math::Cephes::jn,$safeeval,'&jn');
724: $safehole->wrap(\&Math::Cephes::jv,$safeeval,'&jv');
725: $safehole->wrap(\&Math::Cephes::y0,$safeeval,'&y0');
726: $safehole->wrap(\&Math::Cephes::y1,$safeeval,'&y1');
727: $safehole->wrap(\&Math::Cephes::yn,$safeeval,'&yn');
728: $safehole->wrap(\&Math::Cephes::yv,$safeeval,'&yv');
729:
730: $safehole->wrap(\&Math::Cephes::bdtr ,$safeeval,'&bdtr' );
731: $safehole->wrap(\&Math::Cephes::bdtrc ,$safeeval,'&bdtrc' );
732: $safehole->wrap(\&Math::Cephes::bdtri ,$safeeval,'&bdtri' );
733: $safehole->wrap(\&Math::Cephes::btdtr ,$safeeval,'&btdtr' );
734: $safehole->wrap(\&Math::Cephes::chdtr ,$safeeval,'&chdtr' );
735: $safehole->wrap(\&Math::Cephes::chdtrc,$safeeval,'&chdtrc');
736: $safehole->wrap(\&Math::Cephes::chdtri,$safeeval,'&chdtri');
737: $safehole->wrap(\&Math::Cephes::fdtr ,$safeeval,'&fdtr' );
738: $safehole->wrap(\&Math::Cephes::fdtrc ,$safeeval,'&fdtrc' );
739: $safehole->wrap(\&Math::Cephes::fdtri ,$safeeval,'&fdtri' );
740: $safehole->wrap(\&Math::Cephes::gdtr ,$safeeval,'&gdtr' );
741: $safehole->wrap(\&Math::Cephes::gdtrc ,$safeeval,'&gdtrc' );
742: $safehole->wrap(\&Math::Cephes::nbdtr ,$safeeval,'&nbdtr' );
743: $safehole->wrap(\&Math::Cephes::nbdtrc,$safeeval,'&nbdtrc');
744: $safehole->wrap(\&Math::Cephes::nbdtri,$safeeval,'&nbdtri');
745: $safehole->wrap(\&Math::Cephes::ndtr ,$safeeval,'&ndtr' );
746: $safehole->wrap(\&Math::Cephes::ndtri ,$safeeval,'&ndtri' );
747: $safehole->wrap(\&Math::Cephes::pdtr ,$safeeval,'&pdtr' );
748: $safehole->wrap(\&Math::Cephes::pdtrc ,$safeeval,'&pdtrc' );
749: $safehole->wrap(\&Math::Cephes::pdtri ,$safeeval,'&pdtri' );
750: $safehole->wrap(\&Math::Cephes::stdtr ,$safeeval,'&stdtr' );
751: $safehole->wrap(\&Math::Cephes::stdtri,$safeeval,'&stdtri');
752:
753: $safehole->wrap(\&Math::Cephes::Matrix::mat,$safeeval,'&mat');
754: $safehole->wrap(\&Math::Cephes::Matrix::new,$safeeval,
755: '&Math::Cephes::Matrix::new');
756: $safehole->wrap(\&Math::Cephes::Matrix::coef,$safeeval,
757: '&Math::Cephes::Matrix::coef');
758: $safehole->wrap(\&Math::Cephes::Matrix::clr,$safeeval,
759: '&Math::Cephes::Matrix::clr');
760: $safehole->wrap(\&Math::Cephes::Matrix::add,$safeeval,
761: '&Math::Cephes::Matrix::add');
762: $safehole->wrap(\&Math::Cephes::Matrix::sub,$safeeval,
763: '&Math::Cephes::Matrix::sub');
764: $safehole->wrap(\&Math::Cephes::Matrix::mul,$safeeval,
765: '&Math::Cephes::Matrix::mul');
766: $safehole->wrap(\&Math::Cephes::Matrix::div,$safeeval,
767: '&Math::Cephes::Matrix::div');
768: $safehole->wrap(\&Math::Cephes::Matrix::inv,$safeeval,
769: '&Math::Cephes::Matrix::inv');
770: $safehole->wrap(\&Math::Cephes::Matrix::transp,$safeeval,
771: '&Math::Cephes::Matrix::transp');
772: $safehole->wrap(\&Math::Cephes::Matrix::simq,$safeeval,
773: '&Math::Cephes::Matrix::simq');
774: $safehole->wrap(\&Math::Cephes::Matrix::mat_to_vec,$safeeval,
775: '&Math::Cephes::Matrix::mat_to_vec');
776: $safehole->wrap(\&Math::Cephes::Matrix::vec_to_mat,$safeeval,
777: '&Math::Cephes::Matrix::vec_to_mat');
778: $safehole->wrap(\&Math::Cephes::Matrix::check,$safeeval,
779: '&Math::Cephes::Matrix::check');
780: $safehole->wrap(\&Math::Cephes::Matrix::check,$safeeval,
781: '&Math::Cephes::Matrix::check');
782:
783: # $safehole->wrap(\&Math::Cephes::new_fract,$safeeval,'&new_fract');
784: # $safehole->wrap(\&Math::Cephes::radd,$safeeval,'&radd');
785: # $safehole->wrap(\&Math::Cephes::rsub,$safeeval,'&rsub');
786: # $safehole->wrap(\&Math::Cephes::rmul,$safeeval,'&rmul');
787: # $safehole->wrap(\&Math::Cephes::rdiv,$safeeval,'&rdiv');
788: # $safehole->wrap(\&Math::Cephes::euclid,$safeeval,'&euclid');
789:
790: $safehole->wrap(\&Math::Random::random_beta,$safeeval,'&math_random_beta');
791: $safehole->wrap(\&Math::Random::random_chi_square,$safeeval,'&math_random_chi_square');
792: $safehole->wrap(\&Math::Random::random_exponential,$safeeval,'&math_random_exponential');
793: $safehole->wrap(\&Math::Random::random_f,$safeeval,'&math_random_f');
794: $safehole->wrap(\&Math::Random::random_gamma,$safeeval,'&math_random_gamma');
795: $safehole->wrap(\&Math::Random::random_multivariate_normal,$safeeval,'&math_random_multivariate_normal');
796: $safehole->wrap(\&Math::Random::random_multinomial,$safeeval,'&math_random_multinomial');
797: $safehole->wrap(\&Math::Random::random_noncentral_chi_square,$safeeval,'&math_random_noncentral_chi_square');
798: $safehole->wrap(\&Math::Random::random_noncentral_f,$safeeval,'&math_random_noncentral_f');
799: $safehole->wrap(\&Math::Random::random_normal,$safeeval,'&math_random_normal');
800: $safehole->wrap(\&Math::Random::random_permutation,$safeeval,'&math_random_permutation');
801: $safehole->wrap(\&Math::Random::random_permuted_index,$safeeval,'&math_random_permuted_index');
802: $safehole->wrap(\&Math::Random::random_uniform,$safeeval,'&math_random_uniform');
803: $safehole->wrap(\&Math::Random::random_poisson,$safeeval,'&math_random_poisson');
804: $safehole->wrap(\&Math::Random::random_uniform_integer,$safeeval,'&math_random_uniform_integer');
805: $safehole->wrap(\&Math::Random::random_negative_binomial,$safeeval,'&math_random_negative_binomial');
806: $safehole->wrap(\&Math::Random::random_binomial,$safeeval,'&math_random_binomial');
807: $safehole->wrap(\&Math::Random::random_seed_from_phrase,$safeeval,'&random_seed_from_phrase');
808: $safehole->wrap(\&Math::Random::random_set_seed_from_phrase,$safeeval,'&random_set_seed_from_phrase');
809: $safehole->wrap(\&Math::Random::random_get_seed,$safeeval,'&random_get_seed');
810: $safehole->wrap(\&Math::Random::random_set_seed,$safeeval,'&random_set_seed');
811: $safehole->wrap(\&Apache::loncommon::languages,$safeeval,'&languages');
812: $safehole->wrap(\&Apache::lonxml::error,$safeeval,'&LONCAPA_INTERNAL_ERROR');
813: $safehole->wrap(\&Apache::lonxml::debug,$safeeval,'&LONCAPA_INTERNAL_DEBUG');
814: $safehole->wrap(\&Apache::lonnet::logthis,$safeeval,'&LONCAPA_INTERNAL_LOGTHIS');
815: $safehole->wrap(\&Apache::inputtags::finalizeawards,$safeeval,'&LONCAPA_INTERNAL_FINALIZEAWARDS');
816: $safehole->wrap(\&Apache::caparesponse::get_sigrange,$safeeval,'&LONCAPA_INTERNAL_get_sigrange');
817: $safehole->wrap(\&Apache::functionplotresponse::fpr_val,$safeeval,'&fpr_val');
818: $safehole->wrap(\&Apache::functionplotresponse::fpr_f,$safeeval,'&fpr_f');
819: $safehole->wrap(\&Apache::functionplotresponse::fpr_dfdx,$safeeval,'&fpr_dfdx');
820: $safehole->wrap(\&Apache::functionplotresponse::fpr_d2fdx2,$safeeval,'&fpr_d2fdx2');
821: $safehole->wrap(\&Apache::functionplotresponse::fpr_vectorcoords,$safeeval,'&fpr_vectorcoords');
822: $safehole->wrap(\&Apache::functionplotresponse::fpr_objectcoords,$safeeval,'&fpr_objectcoords');
823: $safehole->wrap(\&Apache::functionplotresponse::fpr_vectorlength,$safeeval,'&fpr_vectorlength');
824: $safehole->wrap(\&Apache::functionplotresponse::fpr_vectorangle,$safeeval,'&fpr_vectorangle');
825: $safehole->wrap(\&Math::Calculus::Expression::math_calculus_expression,$safeeval,'&math_calculus_expression');
826: $safehole->wrap(\&Number::FormatEng::format_eng,$safeeval,'&number_format_eng');
827: $safehole->wrap(\&Number::FormatEng::format_pref,$safeeval,'&number_format_pref');
828:
829: # use Data::Dumper;
830: # $safehole->wrap(\&Data::Dumper::Dumper,$safeeval,'&LONCAPA_INTERNAL_Dumper');
831: #need to inspect this class of ops
832: # $safeeval->deny(":base_orig");
833: $safeeval->permit("require");
834: $safeinit .= ';$external::target="'.$target.'";';
835: &Apache::run::run($safeinit,$safeeval);
836: my $rawrndseed = &initialize_rndseed($safeeval);
837: if ($target eq 'grade') {
838: $Apache::lonhomework::rawrndseed = $rawrndseed;
839: }
840: }
841:
842: sub clean_safespace {
843: my ($safeeval) = @_;
844: delete_package_recurse($safeeval->{Root});
845: }
846:
847: sub delete_package_recurse {
848: my ($package) = @_;
849: my @subp;
850: {
851: no strict 'refs';
852: while (my ($key,$val) = each(%{*{"$package\::"}})) {
853: if (!defined($val)) { next; }
854: local (*ENTRY) = $val;
855: if (defined *ENTRY{HASH} && $key =~ /::$/ &&
856: $key ne "main::" && $key ne "<none>::")
857: {
858: my ($p) = $package ne "main" ? "$package\::" : "";
859: ($p .= $key) =~ s/::$//;
860: push(@subp,$p);
861: }
862: }
863: }
864: foreach my $p (@subp) {
865: delete_package_recurse($p);
866: }
867: Symbol::delete_package($package);
868: }
869:
870: sub initialize_rndseed {
871: my ($safeeval)=@_;
872: my $rndseed;
873: my ($symb,$courseid,$domain,$name) = &Apache::lonnet::whichuser();
874: $rndseed=&Apache::lonnet::rndseed($symb,$courseid,$domain,$name);
875: my $safeinit = '$external::randomseed="'.$rndseed.'";';
876: &Apache::lonxml::debug("Setting rndseed to $rndseed");
877: &Apache::run::run($safeinit,$safeeval);
878: return $rndseed;
879: }
880:
881: sub default_homework_load {
882: my ($safeeval)=@_;
883: &Apache::lonxml::debug('Loading default_homework');
884: my $default=&Apache::lonnet::getfile($Apache::lonnet::perlvar{'lonIncludes'}.
885: '/default_homework.lcpm');
886: if ($default eq -1) {
887: &Apache::lonxml::error("<b>Unable to find <i>default_homework.lcpm</i></b>");
888: } else {
889: &Apache::run::run($default,$safeeval);
890: $Apache::lonxml::default_homework_loaded=1;
891: }
892: }
893:
894: {
895: my $alarm_depth;
896: sub init_alarm {
897: alarm(0);
898: $alarm_depth=0;
899: }
900:
901: sub start_alarm {
902: if ($alarm_depth<1) {
903: my $old=alarm($Apache::lonnet::perlvar{'lonScriptTimeout'});
904: if ($old) {
905: &Apache::lonxml::error("Cancelled an alarm of $old, this shouldn't occur.");
906: }
907: }
908: $alarm_depth++;
909: }
910:
911: sub end_alarm {
912: $alarm_depth--;
913: if ($alarm_depth<1) { alarm(0); }
914: }
915: }
916: my $metamode_was;
917: sub startredirection {
918: if (!$Apache::lonxml::redirection) {
919: $metamode_was=$Apache::lonxml::metamode;
920: }
921: $Apache::lonxml::metamode=0;
922: $Apache::lonxml::redirection++;
923: push (@Apache::lonxml::outputstack, '');
924: }
925:
926: sub endredirection {
927: if (!$Apache::lonxml::redirection) {
928: &Apache::lonxml::error("Endredirection was called before a startredirection, perhaps you have unbalanced tags. Some debugging information:".join ":",caller);
929: return '';
930: }
931: $Apache::lonxml::redirection--;
932: if (!$Apache::lonxml::redirection) {
933: $Apache::lonxml::metamode=$metamode_was;
934: }
935: pop @Apache::lonxml::outputstack;
936: }
937: sub in_redirection {
938: return ($Apache::lonxml::redirection > 0)
939: }
940:
941: sub end_tag {
942: my ($tagstack,$parstack,$token)=@_;
943: pop(@$tagstack);
944: pop(@$parstack);
945: &decreasedepth($token);
946: }
947:
948: sub initdepth {
949: @Apache::lonxml::depthcounter=();
950: undef($Apache::lonxml::last_depth_count);
951: }
952:
953:
954: my @timers;
955: my $lasttime;
956: # @Apache::lonxml::depthcounter -> count of tags that exist so
957: # far at each level
958: # $Apache::lonxml::last_depth_count -> when ascending, need to
959: # remember the count for the level below the current level (for
960: # example going from 1_2 -> 1 -> 1_3 need to remember the 2 )
961:
962: sub increasedepth {
963: my ($token) = @_;
964: push(@Apache::lonxml::depthcounter,$Apache::lonxml::last_depth_count+1);
965: undef($Apache::lonxml::last_depth_count);
966: my $time;
967: if ($Apache::lonxml::debug eq "1") {
968: push(@timers,[&gettimeofday()]);
969: $time=&tv_interval($lasttime);
970: $lasttime=[&gettimeofday()];
971: }
972: my $spacing=' 'x($#Apache::lonxml::depthcounter);
973: $Apache::lonxml::curdepth=join('_',@Apache::lonxml::depthcounter);
974: # &Apache::lonxml::debug("s$spacing$Apache::lonxml::depth : $Apache::lonxml::olddepth : $Apache::lonxml::curdepth : $token->[1] : $time");
975: #print "<br />s $Apache::lonxml::depth : $Apache::lonxml::olddepth : $curdepth : $token->[1]\n";
976: }
977:
978: sub decreasedepth {
979: my ($token) = @_;
980: if ( $#Apache::lonxml::depthcounter == -1) {
981: &Apache::lonxml::warning(&mt("Missing tags, unable to properly run file."));
982: }
983: $Apache::lonxml::last_depth_count = pop(@Apache::lonxml::depthcounter);
984:
985: my ($timer,$time);
986: if ($Apache::lonxml::debug eq "1") {
987: $timer=pop(@timers);
988: $time=&tv_interval($lasttime);
989: $lasttime=[&gettimeofday()];
990: }
991: my $spacing=' 'x($#Apache::lonxml::depthcounter);
992: $Apache::lonxml::curdepth = join('_',@Apache::lonxml::depthcounter);
993: # &Apache::lonxml::debug("e$spacing$Apache::lonxml::depth : $Apache::lonxml::olddepth : $Apache::lonxml::curdepth : $token->[1] : $time : ".&tv_interval($timer));
994: #print "<br />e $Apache::lonxml::depth : $Apache::lonxml::olddepth : $token->[1] : $curdepth\n";
995: }
996:
997: sub get_id {
998: my ($parstack,$safeeval)=@_;
999: my $id= &Apache::lonxml::get_param('id',$parstack,$safeeval);
1000: if ($env{'request.state'} eq 'construct' && $id =~ /([._]|[^\w\s\-])/) {
1001: &error(&mt('ID [_1] contains invalid characters. IDs are only allowed to contain letters, numbers, spaces and -','"<tt>'.$id.'</tt>"'));
1002: }
1003: if ($id =~ /^\s*$/) { $id = $Apache::lonxml::curdepth; }
1004: return $id;
1005: }
1006:
1007: sub get_all_text_unbalanced {
1008: #there is a copy of this in lonpublisher.pm
1009: my($tag,$pars)= @_;
1010: my $token;
1011: my $result='';
1012: $tag='<'.$tag.'>';
1013: while ($token = $$pars[-1]->get_token) {
1014: if (($token->[0] eq 'T')||($token->[0] eq 'C')||($token->[0] eq 'D')) {
1015: if ($token->[0] eq 'T' && $token->[2]) {
1016: $result.='<![CDATA['.$token->[1].']]>';
1017: } else {
1018: $result.=$token->[1];
1019: }
1020: } elsif ($token->[0] eq 'PI') {
1021: $result.=$token->[2];
1022: } elsif ($token->[0] eq 'S') {
1023: $result.=$token->[4];
1024: } elsif ($token->[0] eq 'E') {
1025: $result.=$token->[2];
1026: }
1027: if ($result =~ /\Q$tag\E/is) {
1028: ($result,my $redo)=$result =~ /(.*)\Q$tag\E(.*)/is;
1029: #&Apache::lonxml::debug('Got a winner with leftovers ::'.$2);
1030: #&Apache::lonxml::debug('Result is :'.$1);
1031: $redo=$tag.$redo;
1032: &Apache::lonxml::newparser($pars,\$redo);
1033: last;
1034: }
1035: }
1036: return $result
1037:
1038: }
1039:
1040: #########################################################################
1041: # #
1042: # bubble line counter management #
1043: # #
1044: #########################################################################
1045:
1046: =pod
1047:
1048: For bubble grading mode and exam bubble printing mode, the tracking of
1049: the current 'bubble line number' is stored in the %env element
1050: 'form.counter', and is modifed and handled by the following routines.
1051:
1052: The value of it is stored in $Apache:lonxml::counter when live and
1053: stored back to env after done.
1054:
1055: =item &increment_counter($increment, $part_response);
1056:
1057: Increments the internal counter environment variable a specified amount
1058:
1059: Optional Arguments:
1060: $increment - amount to increment by (defaults to 1)
1061: Also 1 if the value is negative or zero.
1062: $part_response - A concatenation of the part and response id
1063: identifying exactly what is being 'answered'.
1064:
1065:
1066: =cut
1067:
1068: sub increment_counter {
1069: my ($increment, $part_response) = @_;
1070: if ($env{'form.grade_noincrement'}) { return; }
1071: if (!defined($increment) || $increment le 0) {
1072: $increment = 1;
1073: }
1074: $Apache::lonxml::counter += $increment;
1075:
1076: # If the caller supplied the response_id parameter,
1077: # Maintain its counter.. creating if necessary.
1078:
1079: if (defined($part_response)) {
1080: if (!defined($Apache::lonxml::counters_per_part{$part_response})) {
1081: $Apache::lonxml::counters_per_part{$part_response} = 0;
1082: }
1083: $Apache::lonxml::counters_per_part{$part_response} += $increment;
1084: my $new_value = $Apache::lonxml::counters_per_part{$part_response};
1085: }
1086:
1087: $Apache::lonxml::counter_changed=1;
1088: }
1089:
1090: =pod
1091:
1092: =item &init_counter($increment);
1093:
1094: Initialize the internal counter environment variable
1095:
1096: =cut
1097:
1098: sub init_counter {
1099: if ($env{'request.state'} eq 'construct') {
1100: $Apache::lonxml::counter=1;
1101: $Apache::lonxml::counter_changed=1;
1102: } elsif (defined($env{'form.counter'})) {
1103: $Apache::lonxml::counter=$env{'form.counter'};
1104: $Apache::lonxml::counter_changed=0;
1105: } else {
1106: $Apache::lonxml::counter=1;
1107: $Apache::lonxml::counter_changed=1;
1108: }
1109: }
1110:
1111: sub store_counter {
1112: &Apache::lonnet::appenv({'form.counter' => $Apache::lonxml::counter});
1113: $Apache::lonxml::counter_changed=0;
1114: return '';
1115: }
1116:
1117: {
1118: my $state;
1119: sub clear_problem_counter {
1120: undef($state);
1121: &Apache::lonnet::delenv('form.counter');
1122: &Apache::lonxml::init_counter();
1123: &Apache::lonxml::store_counter();
1124: }
1125:
1126: sub remember_problem_counter {
1127: &Apache::lonnet::transfer_profile_to_env(undef,undef,1);
1128: $state = $env{'form.counter'};
1129: }
1130:
1131: sub restore_problem_counter {
1132: if (defined($state)) {
1133: &Apache::lonnet::appenv({'form.counter' => $state});
1134: }
1135: }
1136: sub get_problem_counter {
1137: if ($Apache::lonxml::counter_changed) { &store_counter() }
1138: &Apache::lonnet::transfer_profile_to_env(undef,undef,1);
1139: return $env{'form.counter'};
1140: }
1141: }
1142:
1143: =pod
1144:
1145: =item bubble_lines_for_part(part_response)
1146:
1147: Returns the number of lines required to get a response for
1148: $part_response (this is just $Apache::lonxml::counters_per_part{$part_response}
1149:
1150: =cut
1151:
1152: sub bubble_lines_for_part {
1153: my ($part_response) = @_;
1154:
1155: if (!defined($Apache::lonxml::counters_per_part{$part_response})) {
1156: return 0;
1157: } else {
1158: return $Apache::lonxml::counters_per_part{$part_response};
1159: }
1160: }
1161:
1162: =pod
1163:
1164: =item clear_bubble_lines_for_part
1165:
1166: Clears the hash of bubble lines per part. If a caller
1167: needs to analyze several resources this should be called between
1168: resources to reset the hash for each problem being analyzed.
1169:
1170: =cut
1171:
1172: sub clear_bubble_lines_for_part {
1173: undef(%Apache::lonxml::counters_per_part);
1174: }
1175:
1176: =pod
1177:
1178: =item set_bubble_lines(part_response, value)
1179:
1180: If there is a problem part, that for whatever reason
1181: requires bubble lines that are not
1182: the same as the counter increment, it can call this sub during
1183: analysis to set its hash value explicitly.
1184:
1185: =cut
1186:
1187: sub set_bubble_lines {
1188: my ($part_response, $value) = @_;
1189:
1190: $Apache::lonxml::counters_per_part{$part_response} = $value;
1191: }
1192:
1193: =pod
1194:
1195: =item get_bubble_line_hash
1196:
1197: Returns the current bubble line hash. This is assumed to
1198: be small so we return a copy
1199:
1200:
1201: =cut
1202:
1203: sub get_bubble_line_hash {
1204: return %Apache::lonxml::counters_per_part;
1205: }
1206:
1207:
1208: #--------------------------------------------------
1209:
1210: sub get_all_text {
1211: my($tag,$pars,$style)= @_;
1212: my $gotfullstack=1;
1213: if (ref($pars) ne 'ARRAY') {
1214: $gotfullstack=0;
1215: $pars=[$pars];
1216: }
1217: if (ref($style) ne 'HASH') {
1218: $style={};
1219: }
1220: my $depth=0;
1221: my $token;
1222: my $result='';
1223: if ( $tag =~ m:^/: ) {
1224: my $tag=substr($tag,1);
1225: #&Apache::lonxml::debug("have:$tag:");
1226: my $top_empty=0;
1227: while (($depth >=0) && ($#$pars > -1) && (!$top_empty)) {
1228: while (($depth >=0) && ($token = $$pars[-1]->get_token)) {
1229: #&Apache::lonxml::debug("e token:$token->[0]:$depth:$token->[1]:".$#$pars.":".$#Apache::lonxml::pwd);
1230: if (($token->[0] eq 'T')||($token->[0] eq 'C')||($token->[0] eq 'D')) {
1231: if ($token->[2]) {
1232: $result.='<![CDATA['.$token->[1].']]>';
1233: } else {
1234: $result.=$token->[1];
1235: }
1236: } elsif ($token->[0] eq 'PI') {
1237: $result.=$token->[2];
1238: } elsif ($token->[0] eq 'S') {
1239: if ($token->[1] =~ /^\Q$tag\E$/i) { $depth++; }
1240: if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_ON$/) { $Apache::lonxml::usestyle=1; }
1241: if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_OFF$/) { $Apache::lonxml::usestyle=0; }
1242: $result.=$token->[4];
1243: } elsif ($token->[0] eq 'E') {
1244: if ( $token->[1] =~ /^\Q$tag\E$/i) { $depth--; }
1245: #skip sending back the last end tag
1246: if ($depth == 0 && exists($$style{'/'.$token->[1]}) && $Apache::lonxml::usestyle) {
1247: my $string=
1248: '<LONCAPA_INTERNAL_TURN_STYLE_OFF end="yes" />'.
1249: $$style{'/'.$token->[1]}.
1250: $token->[2].
1251: '<LONCAPA_INTERNAL_TURN_STYLE_ON />';
1252: &Apache::lonxml::newparser($pars,\$string);
1253: #&Apache::lonxml::debug("reParsing $string");
1254: next;
1255: }
1256: if ($depth > -1) {
1257: $result.=$token->[2];
1258: } else {
1259: $$pars[-1]->unget_token($token);
1260: }
1261: }
1262: }
1263: if (($depth >=0) && ($#$pars == 0) ) { $top_empty=1; }
1264: if (($depth >=0) && ($#$pars > 0) ) {
1265: pop(@$pars);
1266: pop(@Apache::lonxml::pwd);
1267: }
1268: }
1269: if ($top_empty && $depth >= 0) {
1270: #never found the end tag ran out of text, throw error send back blank
1271: &error('Never found end tag for <'.$tag.
1272: '> current string <pre>'.
1273: &HTML::Entities::encode($result,'<>&"').
1274: '</pre>');
1275: if ($gotfullstack) {
1276: my $newstring='</'.$tag.'>'.$result;
1277: &Apache::lonxml::newparser($pars,\$newstring);
1278: }
1279: $result='';
1280: }
1281: } else {
1282: while ($#$pars > -1) {
1283: while ($token = $$pars[-1]->get_token) {
1284: #&Apache::lonxml::debug("s token:$token->[0]:$depth:$token->[1]");
1285: if (($token->[0] eq 'T')||($token->[0] eq 'C')||
1286: ($token->[0] eq 'D')) {
1287: if ($token->[2]) {
1288: $result.='<![CDATA['.$token->[1].']]>';
1289: } else {
1290: $result.=$token->[1];
1291: }
1292: } elsif ($token->[0] eq 'PI') {
1293: $result.=$token->[2];
1294: } elsif ($token->[0] eq 'S') {
1295: if ( $token->[1] =~ /^\Q$tag\E$/i) {
1296: $$pars[-1]->unget_token($token); last;
1297: } else {
1298: $result.=$token->[4];
1299: }
1300: if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_ON$/) { $Apache::lonxml::usestyle=1; }
1301: if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_OFF$/) { $Apache::lonxml::usestyle=0; }
1302: } elsif ($token->[0] eq 'E') {
1303: $result.=$token->[2];
1304: }
1305: }
1306: if (($#$pars > 0) ) {
1307: pop(@$pars);
1308: pop(@Apache::lonxml::pwd);
1309: } else { last; }
1310: }
1311: }
1312: #&Apache::lonxml::debug("Exit:$result:");
1313: return $result
1314: }
1315:
1316: sub newparser {
1317: my ($parser,$contentref,$dir) = @_;
1318: push (@$parser,HTML::LCParser->new($contentref));
1319: $$parser[-1]->xml_mode(1);
1320: $$parser[-1]->marked_sections(1);
1321: if ( $dir eq '' ) {
1322: push (@Apache::lonxml::pwd, $Apache::lonxml::pwd[$#Apache::lonxml::pwd]);
1323: } else {
1324: push (@Apache::lonxml::pwd, $dir);
1325: }
1326: }
1327:
1328: sub parstring {
1329: my ($token) = @_;
1330: my (@vars,@values);
1331: foreach my $attr (@{$token->[3]}) {
1332: if ($attr!~/\W/) {
1333: my $val=$token->[2]->{$attr};
1334: $val =~ s/([\%\@\\\"\'])/\\$1/g;
1335: $val =~ s/(\$[^\{a-zA-Z_])/\\$1/g;
1336: $val =~ s/(\$)$/\\$1/;
1337: #if ($val =~ m/^[\%\@]/) { $val="\\".$val; }
1338: push(@vars,"\$$attr");
1339: push(@values,"\"$val\"");
1340: }
1341: }
1342: my $var_init =
1343: (@vars) ? 'my ('.join(',',@vars).') = ('.join(',',@values).');'
1344: : '';
1345: return $var_init;
1346: }
1347:
1348: sub extlink {
1349: my ($res,$exact)=@_;
1350: if (!$exact) {
1351: $res=&Apache::lonnet::hreflocation($Apache::lonxml::pwd[-1],$res);
1352: }
1353: push(@Apache::lonxml::extlinks,$res);
1354: }
1355:
1356: sub writeallows {
1357: unless ($#extlinks>=0) { return; }
1358: my $thisurl = &Apache::lonnet::clutter(shift);
1359: if ($env{'httpref.'.$thisurl}) {
1360: $thisurl=$env{'httpref.'.$thisurl};
1361: }
1362: my $thisdir=$thisurl;
1363: $thisdir=~s/\/[^\/]+$//;
1364: my %httpref=();
1365: foreach (@extlinks) {
1366: $httpref{'httpref.'.
1367: &Apache::lonnet::hreflocation($thisdir,&unescape($_))}=$thisurl;
1368: }
1369: @extlinks=();
1370: &Apache::lonnet::appenv(\%httpref);
1371: }
1372:
1373: sub register_ssi {
1374: my ($url,%form)=@_;
1375: push (@Apache::lonxml::ssi_info,{'url'=>$url,'form'=>\%form});
1376: return '';
1377: }
1378:
1379: sub do_registered_ssi {
1380: foreach my $info (@Apache::lonxml::ssi_info) {
1381: my %form=%{ $info->{'form'}};
1382: my $url=$info->{'url'};
1383: &Apache::lonnet::ssi($url,%form);
1384: }
1385: }
1386:
1387: sub add_script_result {
1388: my ($display) = @_;
1389: if ($display ne '') {
1390: push(@script_var_displays, $display);
1391: }
1392: }
1393:
1394: #
1395: # Afterburner handles anchors, highlights and links
1396: #
1397: sub afterburn {
1398: my $result=shift;
1399: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
1400: ['highlight','anchor','link']);
1401: if ($env{'form.highlight'}) {
1402: foreach (split(/\,/,$env{'form.highlight'})) {
1403: my $anchorname=$_;
1404: my $matchthis=$anchorname;
1405: $matchthis=~s/\_+/\\s\+/g;
1406: $result=~s/(\Q$matchthis\E)/\<font color=\"red\"\>$1\<\/font\>/gs;
1407: }
1408: }
1409: if ($env{'form.link'}) {
1410: foreach (split(/\,/,$env{'form.link'})) {
1411: my ($anchorname,$linkurl)=split(/\>/,$_);
1412: my $matchthis=$anchorname;
1413: $matchthis=~s/\_+/\\s\+/g;
1414: $result=~s/(\Q$matchthis\E)/\<a href=\"$linkurl\"\>$1\<\/a\>/gs;
1415: }
1416: }
1417: if ($env{'form.anchor'}) {
1418: my $anchorname=$env{'form.anchor'};
1419: my $matchthis=$anchorname;
1420: $matchthis=~s/\_+/\\s\+/g;
1421: $result=~s/(\Q$matchthis\E)/\<a name=\"$anchorname\"\>$1\<\/a\>/s;
1422: $result.=(<<"ENDSCRIPT");
1423: <script type="text/javascript">
1424: document.location.hash='$anchorname';
1425: </script>
1426: ENDSCRIPT
1427: }
1428: return $result;
1429: }
1430:
1431: sub storefile {
1432: my ($file,$contents)=@_;
1433: &Apache::lonnet::correct_line_ends(\$contents);
1434: if (my $fh=Apache::File->new('>'.$file)) {
1435: print $fh $contents;
1436: $fh->close();
1437: return 1;
1438: } else {
1439: &warning(&mt('Unable to save file [_1]','<tt>'.$file.'</tt>'));
1440: return 0;
1441: }
1442: }
1443:
1444: sub createnewhtml {
1445: my $title=&mt('Title of document goes here');
1446: my $body=&mt('Body of document goes here');
1447: my $filecontents=(<<SIMPLECONTENT);
1448: <html>
1449: <head>
1450: <title>$title</title>
1451: </head>
1452: <body bgcolor="#FFFFFF">
1453: $body
1454: </body>
1455: </html>
1456: SIMPLECONTENT
1457: return $filecontents;
1458: }
1459:
1460: sub createnewsty {
1461: my $filecontents=(<<SIMPLECONTENT);
1462: <definetag name="">
1463: <render>
1464: <web></web>
1465: <tex></tex>
1466: </render>
1467: </definetag>
1468: SIMPLECONTENT
1469: return $filecontents;
1470: }
1471:
1472: sub createnewjs {
1473: my $filecontents=(<<SIMPLECONTENT);
1474: <script type="text/javascript" language="Javascript">
1475:
1476: </script>
1477: SIMPLECONTENT
1478: return $filecontents;
1479: }
1480:
1481: sub verify_html {
1482: my ($filecontents)=@_;
1483: my ($is_html,$is_xml,$is_physnet);
1484: if ($filecontents =~/(?:\<|\<\;)\?xml[^\<]*\?(?:\>|\>\;)/is) {
1485: $is_xml = 1;
1486: } elsif ($filecontents =~/(?:\<|\<\;)html(?:\s+[^\<]+|\s*)(?:\>|\>\;)/is) {
1487: $is_html = 1;
1488: } elsif ($filecontents =~/(?:\<|\<\;)physnet[^\<]*(?:\>|\>\;)/is) {
1489: $is_physnet = 1;
1490: }
1491: unless ($is_xml || $is_html || $is_physnet) {
1492: return &mt('File does not have [_1] or [_2] starting tag','<html>','<?xml ?>');
1493: }
1494: if ($is_html) {
1495: if ($filecontents!~/(?:\<|\<\;)\/html(?:\>|\>\;)/is) {
1496: return &mt('File does not have [_1] ending tag','<html>');
1497: }
1498: if ($filecontents!~/(?:\<|\<\;)(?:body|frameset)[^\<]*(?:\>|\>\;)/is) {
1499: return &mt('File does not have [_1] or [_2] starting tag','<body>','<frameset>');
1500: }
1501: if ($filecontents!~/(?:\<|\<\;)\/(?:body|frameset)[^\<]*(?:\>|\>\;)/is) {
1502: return &mt('File does not have [_1] or [_2] ending tag','<body>','<frameset>');
1503: }
1504: }
1505: return '';
1506: }
1507:
1508: sub renderingoptions {
1509: my %langchoices=('' => '');
1510: foreach (&Apache::loncommon::languageids()) {
1511: if (&Apache::loncommon::supportedlanguagecode($_)) {
1512: $langchoices{&Apache::loncommon::supportedlanguagecode($_)}
1513: = &Apache::loncommon::plainlanguagedescription($_);
1514: }
1515: }
1516: my $output;
1517: unless ($env{'form.forceedit'}) {
1518: $output .=
1519: '<span class="LC_nobreak">'.
1520: &mt('Language:').' '.
1521: &Apache::loncommon::select_form(
1522: $env{'form.languages'},
1523: 'languages',
1524: {&Apache::lonlocal::texthash(%langchoices)}).
1525: '</span>';
1526: }
1527: $output .=
1528: ' <span class="LC_nobreak">'.
1529: &mt('Math Rendering:').' '.
1530: &Apache::loncommon::select_form(
1531: $env{'form.texengine'},
1532: 'texengine',
1533: {&Apache::lonlocal::texthash
1534: ('' => '',
1535: 'tth' => 'tth (TeX to HTML)',
1536: 'MathJax' => 'MathJax',
1537: 'mimetex' => 'mimetex (Convert to Images)')}).
1538: '</span>';
1539: return $output;
1540: }
1541:
1542: sub inserteditinfo {
1543: my ($filecontents,$filetype,$filename,$symb,$itemtitle,$folderpath,$uri,$action) = @_;
1544: $filecontents = &HTML::Entities::encode($filecontents,'<>&"');
1545: my $xml_help = '';
1546: my $initialize='';
1547: my $textarea_id = 'filecont';
1548: my ($dragmath_button,$deps_button,$context,$cnum,$cdom,$add_to_onload,
1549: $add_to_onresize,$init_dragmath);
1550: $initialize=&Apache::lonhtmlcommon::spellheader();
1551: if ($filetype eq 'html') {
1552: if ($env{'request.course.id'}) {
1553: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
1554: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
1555: if ($uri =~ m{^\Q/uploaded/$cdom/$cnum/portfolio/syllabus/\E}) {
1556: $context = 'syllabus';
1557: }
1558: }
1559: if (&Apache::lonhtmlcommon::htmlareabrowser()) {
1560: my $lang = &Apache::lonhtmlcommon::htmlarea_lang();
1561: my %textarea_args = (
1562: fullpage => 'true',
1563: dragmath => 'math',
1564: );
1565: $initialize .= &Apache::lonhtmlcommon::htmlareaselectactive(\%textarea_args);
1566: if ($context eq 'syllabus') {
1567: $init_dragmath = "editmath_visibility('filecont','none')";
1568: }
1569: }
1570: }
1571: $initialize .= (<<FULLPAGE);
1572: <script type="text/javascript">
1573: // <![CDATA[
1574: function initDocument() {
1575: resize_textarea('$textarea_id','LC_aftertextarea');
1576: $init_dragmath
1577: }
1578: // ]]>
1579: </script>
1580: FULLPAGE
1581: my $textareaclass;
1582: if ($filetype eq 'html') {
1583: if ($context eq 'syllabus') {
1584: $deps_button = &Apache::lonhtmlcommon::dependencies_button()."\n";
1585: $initialize .=
1586: &Apache::lonhtmlcommon::dependencycheck_js(undef,&mt('Syllabus'),
1587: $uri,undef,
1588: "/public/$cdom/$cnum/syllabus").
1589: "\n";
1590: if (&Apache::lonhtmlcommon::htmlareabrowser()) {
1591: $textareaclass = 'class="LC_richDefaultOn"';
1592: }
1593: } elsif ($symb || $folderpath) {
1594: $deps_button = &Apache::lonhtmlcommon::dependencies_button()."\n";
1595: $initialize .=
1596: &Apache::lonhtmlcommon::dependencycheck_js($symb,$itemtitle,
1597: undef,$folderpath,$uri)."\n";
1598: }
1599: $dragmath_button = '<span id="math_filecont">'.&Apache::lonhtmlcommon::dragmath_button('filecont',1).'</span>';
1600: $initialize .= "\n".&Apache::lonhtmlcommon::dragmath_js('EditMathPopup');
1601: }
1602: $add_to_onload = 'initDocument();';
1603: $add_to_onresize = "resize_textarea('$textarea_id','LC_aftertextarea');";
1604:
1605: if ($filetype eq 'html') {
1606: my $not_author;
1607: if ($uri =~ m{^/uploaded/}) {
1608: $not_author = 1;
1609: }
1610: $xml_help=&Apache::loncommon::helpLatexCheatsheet(undef,undef,$not_author);
1611: }
1612:
1613: my $titledisplay=&display_title();
1614: my %lt=&Apache::lonlocal::texthash('st' => 'Save and Edit',
1615: 'vi' => 'Save and View',
1616: 'dv' => 'Discard Edits and View',
1617: 'un' => 'Undo',
1618: 'ed' => 'Edit',
1619: 'ew' => 'Edit with Daxe',
1620: 'er' => 'Editor');
1621: my $spelllink = &Apache::lonhtmlcommon::spelllink('xmledit','filecont');
1622: my $textarea_events = &Apache::edit::element_change_detection();
1623: my $form_events = &Apache::edit::form_change_detection();
1624: my $htmlerror;
1625: if ($filetype eq 'html') {
1626: $htmlerror=&verify_html($filecontents);
1627: if ($htmlerror) {
1628: $htmlerror=(' 'x3).' <span class="LC_error">'.$htmlerror.'</span>';
1629: }
1630: if (&Apache::lonhtmlcommon::htmlareabrowser()) {
1631: unless ($textareaclass) {
1632: $textareaclass = 'class="LC_richDefaultOff"';
1633: }
1634: }
1635: }
1636: my ($undo,$daxebutton,%onclick);
1637: foreach my $item ('discard','undo','daxe') {
1638: $onclick{$item} = 'onclick="still_ask=true;setmode(this.form,'."'$item'".')"';
1639: }
1640: foreach my $item ('saveedit','saveview') {
1641: $onclick{$item} = 'onclick="is_submit=true;setmode(this.form,'."'$item'".')"';
1642: }
1643: unless ($uri =~ m{^/uploaded/}) {
1644: $undo = '<input type="button" name="undo" accesskey="u" value="'.$lt{'un'}.'" '.
1645: $onclick{'undo'}.' />'."\n";
1646: }
1647: $initialize .= &setmode_javascript();
1648: if ($filetype eq 'html') {
1649: my %editors = &Apache::loncommon::permitted_editors($uri);
1650: if ($editors{'daxe'}) {
1651: $daxebutton = '<input type="button" name="editwithdaxe" accesskey="w" value="'.$lt{'ew'}.'" '.
1652: $onclick{'daxe'}.' />'."\n";
1653: }
1654: }
1655: my $editfooter=(<<ENDFOOTER);
1656: $initialize
1657: <a name="editsection" />
1658: <form $form_events method="post" name="xmledit" action="$action">
1659: <input type="hidden" name="problemmode" value="edit" />
1660: <div class="LC_edit_problem_editxml_header">
1661: <table class="LC_edit_problem_header_title"><tr><td>
1662: $filename
1663: </td><td align="right">
1664: $xml_help
1665: </td></tr>
1666: </table>
1667: <div style="float:right">
1668: <input type="button" name="savethisfile" accesskey="s" value="$lt{'st'}" $onclick{'saveedit'} />
1669: <input type="button" name="viewmode" accesskey="v" value="$lt{'vi'}" $onclick{'saveview'} />
1670: </div>
1671: <div>
1672: <input type="button" name="discardview" accesskey="d" value="$lt{'dv'}" $onclick{'discard'} />
1673: $undo $deps_button $daxebutton $dragmath_button $htmlerror
1674: </div>
1675: </div>
1676: <textarea $textarea_events style="width:100%" cols="80" rows="44" name="filecont" id="filecont" $textareaclass>$filecontents</textarea><br /><label for="filecont" class="LC_visually_hidden">$lt{'er'}</label>$spelllink
1677: <div id="LC_aftertextarea">
1678: <br />
1679: $titledisplay
1680: </div>
1681: </form>
1682: ENDFOOTER
1683: return ($editfooter,$add_to_onload,$add_to_onresize);
1684: }
1685:
1686: sub setmode_javascript {
1687: return <<"ENDSCRIPT";
1688: <script type="text/javascript">
1689: // <![CDATA[
1690: function setmode(form,probmode) {
1691: if (probmode == 'daxe') {
1692: var url = new URL(document.location.href);
1693: window.location = url.protocol+'//'+url.hostname+'/daxepage'+url.pathname;
1694: } else {
1695: var initial = form.problemmode.value;
1696: form.problemmode.value = probmode;
1697: form.submit();
1698: form.problemmode.value = initial;
1699: }
1700: }
1701: // ]]>
1702: </script>
1703: ENDSCRIPT
1704: }
1705:
1706: sub seteditor_javascript {
1707: my ($is_course_doc,$is_supp,$supp_path,$supp_title) = @_;
1708: my $symb;
1709: if ($is_course_doc) {
1710: if (!$is_supp) {
1711: ($symb) = &Apache::lonnet::whichuser();
1712: if ($symb) {
1713: $symb = &escape($symb);
1714: }
1715: }
1716: }
1717: return <<"ENDSCRIPT";
1718: <script type="text/javascript">
1719: // <![CDATA[
1720: function seteditmode(form,editor) {
1721: var querystr = '';
1722: var supplemental = '$is_supp';
1723: var coursedoc = '$is_course_doc';
1724: if (coursedoc) {
1725: if (supplemental) {
1726: var supppath = '$supp_path';
1727: var supptitle = '$supp_title';
1728: if (supppath) {
1729: querystr = 'folderpath='+supppath;
1730: }
1731: if (supptitle) {
1732: if (querystr) {
1733: querystr += '&';
1734: }
1735: querystr += 'title='+supptitle;
1736: }
1737: }
1738: }
1739: if (editor == 'daxe') {
1740: var url = new URL(document.location.href);
1741: var newloc = url.protocol+'//'+url.hostname+'/daxepage'+url.pathname;
1742: if (querystr) {
1743: if (/\\?/.test(url.pathname)) {
1744: newloc += '&';
1745: } else {
1746: newloc += '?';
1747: }
1748: newloc += querystr;
1749: }
1750: window.location = newloc;
1751: } else {
1752: if (coursedoc) {
1753: var curraction = form.action;
1754: var idx = curraction.indexOf('?');
1755: if (idx !== -1) {
1756: form.action = curraction.substring(0,idx);
1757: }
1758: form.action += '?forceedit=1®ister=1';
1759: if (querystr) {
1760: form.action += '&'+querystr;
1761: }
1762: }
1763: if (editor == 'edit') {
1764: form.editmode.value = editor;
1765: } else {
1766: form.editmode.value = '';
1767: }
1768: form.submit();
1769: }
1770: }
1771: // ]]>
1772: </script>
1773: ENDSCRIPT
1774: }
1775:
1776: sub get_target {
1777: my $viewgrades=&Apache::lonnet::allowed('vgr',$env{'request.course.id'});
1778: if ( $env{'request.state'} eq 'published') {
1779: if ( defined($env{'form.grade_target'})
1780: && ($viewgrades == 'F' )) {
1781: return ($env{'form.grade_target'});
1782: } elsif (defined($env{'form.grade_target'})) {
1783: if (($env{'form.grade_target'} eq 'web') ||
1784: ($env{'form.grade_target'} eq 'tex') ) {
1785: return $env{'form.grade_target'}
1786: } else {
1787: return 'web';
1788: }
1789: } else {
1790: return 'web';
1791: }
1792: } elsif ($env{'request.state'} eq 'construct') {
1793: if ( defined($env{'form.grade_target'})) {
1794: return ($env{'form.grade_target'});
1795: } else {
1796: return 'web';
1797: }
1798: } else {
1799: return 'web';
1800: }
1801: }
1802:
1803: sub handler {
1804: my $request=shift;
1805:
1806: my $target=&get_target();
1807: $Apache::lonxml::debug=$env{'user.debug'};
1808:
1809: &Apache::loncommon::content_type($request,'text/html');
1810: &Apache::loncommon::no_cache($request);
1811: if ($env{'request.state'} eq 'published') {
1812: $request->set_last_modified(&Apache::lonnet::metadata($request->uri,
1813: 'lastrevisiondate'));
1814: }
1815: # Embedded Flash movies from Camtasia served from https will not display in IE
1816: # if XML config file has expired from cache.
1817: if ($ENV{'SERVER_PORT'} == 443) {
1818: if ($request->uri =~ /\.xml$/) {
1819: my ($httpbrowser,$clientbrowser) =
1820: &Apache::loncommon::decode_user_agent($request);
1821: if ($clientbrowser =~ /^explorer$/i) {
1822: delete $request->headers_out->{'Cache-control'};
1823: delete $request->headers_out->{'Pragma'};
1824: my $expiration = time + 60;
1825: my $date=strftime("%a, %d %b %Y %H:%M:%S GMT",gmtime($expiration));
1826: $request->headers_out->set("Expires" => $date);
1827: }
1828: }
1829: }
1830: $request->send_http_header;
1831:
1832: return OK if $request->header_only;
1833:
1834:
1835: my $file=&Apache::lonnet::filelocation("",$request->uri);
1836: my ($filetype,$breadcrumbtext);
1837: if ($file =~ /\.(sty|css|js|txt|tex)$/) {
1838: $filetype=$1;
1839: } else {
1840: $filetype='html';
1841: }
1842: unless ($env{'request.uri'}) {
1843: $env{'request.uri'}=$request->uri;
1844: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
1845: ['todocs']);
1846: }
1847: my ($cdom,$cnum);
1848: if ($env{'request.course.id'}) {
1849: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
1850: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
1851: if ($filetype eq 'html') {
1852: if ($request->uri =~ m{^\Q/uploaded/$cdom/$cnum/portfolio/syllabus/\E.+$}) {
1853: if (&Apache::lonnet::allowed('mdc',$env{'request.course.id'})) {
1854: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
1855: ['editmode']);
1856: }
1857: }
1858: }
1859: }
1860: if ($filetype eq 'sty') {
1861: $breadcrumbtext = 'Style File Editor';
1862: } elsif ($filetype eq 'js') {
1863: $breadcrumbtext = 'Javascript Editor';
1864: } elsif ($filetype eq 'css') {
1865: $breadcrumbtext = 'CSS Editor';
1866: } elsif ($filetype eq 'txt') {
1867: $breadcrumbtext = 'Text Editor';
1868: } elsif ($filetype eq 'tex') {
1869: $breadcrumbtext = 'TeX Editor';
1870: } else {
1871: $breadcrumbtext = 'HTML Editor';
1872: }
1873:
1874: #
1875: # Edit action? Save file.
1876: #
1877: if (!($env{'request.state'} eq 'published')) {
1878: if (($env{'form.problemmode'} eq 'saveedit') ||
1879: ($env{'form.problemmode'} eq 'saveview') ||
1880: ($env{'form.problemmode'} eq 'undo')) {
1881: my $html_file=&Apache::lonnet::getfile($file);
1882: my $error = &Apache::lonhomework::handle_save_or_undo($request, \$html_file, \$env{'form.filecont'});
1883: if ($env{'form.problemmode'} eq 'saveedit') {
1884: $env{'form.editmode'}='edit'; #force edit mode
1885: }
1886: }
1887: }
1888: my $inhibit_menu;
1889: my %mystyle;
1890: my $result = '';
1891: my $filecontents=&Apache::lonnet::getfile($file);
1892: if ($filecontents eq -1) {
1893: my ($start_page,$end_page,$errormsg);
1894: $start_page=&Apache::loncommon::start_page('File Error');
1895: if ($target eq 'web') {
1896: $start_page .= '<div class="LC_landmark" style="clear:both" role="menu">'.
1897: '<h1 class="LC_visually_hidden">'.
1898: &mt('File not found').'</h1>';
1899: $end_page = '</div>';
1900: }
1901: $end_page .= &Apache::loncommon::end_page();
1902: $errormsg='<p class="LC_error">'
1903: .&mt('File not found: [_1]'
1904: ,'<span class="LC_filename">'.$file.'</span>')
1905: .'</p>';
1906: $result=(<<ENDNOTFOUND);
1907: $start_page
1908: $errormsg
1909: $end_page
1910: ENDNOTFOUND
1911: $filecontents='';
1912: if ($env{'request.state'} ne 'published') {
1913: if ($filetype eq 'sty') {
1914: $filecontents=&createnewsty();
1915: } elsif ($filetype eq 'js') {
1916: $filecontents=&createnewjs();
1917: } elsif ($filetype ne 'css' && $filetype ne 'txt' && $filetype ne 'tex') {
1918: $filecontents=&createnewhtml();
1919: }
1920: $env{'form.editmode'}='edit'; #force edit mode
1921: }
1922: } else {
1923: unless ($env{'request.state'} eq 'published') {
1924: if ($filecontents=~/BEGIN LON-CAPA Internal/) {
1925: &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.'));
1926: }
1927: #
1928: # we are in construction space, see if edit mode forced
1929: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
1930: ['editmode']);
1931: }
1932: if ((!$env{'form.editmode'}) ||
1933: ($env{'form.problemmode'} eq 'saveview') ||
1934: ($env{'form.problemmode'} eq 'discard')) {
1935: if ($filetype eq 'html' || $filetype eq 'sty') {
1936: &Apache::structuretags::reset_problem_globals();
1937: $result = &Apache::lonxml::xmlparse($request,$target,
1938: $filecontents,'',%mystyle);
1939: # .html files may contain <problem> or <Task> need to clean
1940: # up if it did
1941: &Apache::structuretags::reset_problem_globals();
1942: &Apache::lonhomework::finished_parsing();
1943: } elsif ($filetype eq 'tex') {
1944: $result = &Apache::lontexconvert::converted(\$filecontents,
1945: $env{'form.texengine'});
1946: if ($env{'form.return_only_error_and_warning_counts'}) {
1947: $result = "$errorcount:$warningcount";
1948: }
1949: } else {
1950: $result = $filecontents;
1951: }
1952: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
1953: ['rawmode']);
1954: if ($env{'form.rawmode'}) { $result = $filecontents; }
1955: if (($env{'request.state'} eq 'construct') &&
1956: (($filetype eq 'css') || ($filetype eq 'js')) && ($ENV{'HTTP_REFERER'})) {
1957: if ($ENV{'HTTP_REFERER'} =~ m{^https?\://[^\/]+/priv/$LONCAPA::match_domain/$LONCAPA::match_username/[^\?]+\.(x?html?|swf)(|\?)[^\?]*$}) {
1958: $inhibit_menu = 1;
1959: }
1960: }
1961: if (($filetype ne 'html') &&
1962: (!$env{'form.return_only_error_and_warning_counts'}) &&
1963: (!$inhibit_menu)) {
1964: my $nochgview = 1;
1965: my $controls = '';
1966: if ($env{'request.state'} eq 'construct') {
1967: $controls = &Apache::loncommon::head_subbox(
1968: &Apache::loncommon::CSTR_pageheader()
1969: .&Apache::londefdef::edit_controls($nochgview));
1970: }
1971: if ($filetype ne 'sty' && $filetype ne 'tex') {
1972: $result =~ s/</</g;
1973: $result =~ s/>/>/g;
1974: $result = '<table class="LC_sty_begin">'.
1975: '<tr><td><b><pre>'.$result.
1976: '</pre></b></td></tr></table>';
1977: }
1978: my $brcrum;
1979: if ($env{'request.state'} eq 'construct') {
1980: my $text = 'Authoring Space';
1981: my $href = &Apache::loncommon::authorspace($request->uri);
1982: if ($env{'request.course.id'}) {
1983: my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
1984: my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
1985: if ($href eq "/priv/$cdom/$cnum/") {
1986: $text = 'Course Authoring Space';
1987: }
1988: }
1989: $brcrum = [{'href' => $href,
1990: 'text' => $text,},
1991: {'href' => '',
1992: 'text' => $breadcrumbtext}];
1993: } else {
1994: $brcrum = ''; # FIXME: Where are we?
1995: }
1996: my %options = ('bread_crumbs' => $brcrum,
1997: 'bgcolor' => '#FFFFFF');
1998: $result =
1999: &Apache::loncommon::start_page(undef,undef,\%options)
2000: .$controls
2001: .$result
2002: .&Apache::loncommon::end_page();
2003: }
2004: }
2005: }
2006:
2007: #
2008: # Edit action? Insert editing commands
2009: #
2010: unless (($env{'request.state'} eq 'published') || ($inhibit_menu)) {
2011: if (($env{'form.editmode'}) &&
2012: (!($env{'form.problemmode'} eq 'saveview')) &&
2013: (!($env{'form.problemmode'} eq 'discard'))) {
2014: my ($displayfile,$url,$symb,$itemtitle,$action);
2015: $displayfile=$request->uri;
2016: if ($request->uri =~ m{^/uploaded/}) {
2017: if ($env{'request.course.id'}) {
2018: if ($request->uri =~ m{^\Q/uploaded/$cdom/$cnum/\E(docs|supplemental)/}) {
2019: if ($1 eq 'supplemental') {
2020: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
2021: ['folderpath','title']);
2022: }
2023: if (($env{'request.state'} eq 'edit') && ($env{'form.editmode'} eq 'edit') &&
2024: ($filetype eq 'html')) {
2025: &Apache::lonhtmlcommon::clear_breadcrumbs();
2026: }
2027: } elsif ($request->uri =~ m{^\Q/uploaded/$cdom/$cnum/portfolio/syllabus/\E(.+)$}) {
2028: my $filename = $1;
2029: if ($1 eq 'loncapa.html') {
2030: $displayfile = &mt('Syllabus (minimal template)');
2031: $action = $request->uri.'?forceedit=1';
2032: } else {
2033: $displayfile = &mt('Syllabus file: [_1]',$1);
2034: }
2035: $itemtitle = &mt('Syllabus');
2036: }
2037: }
2038: unless ($itemtitle) {
2039: ($symb,$itemtitle,$displayfile) =
2040: &get_courseupload_hierarchy($request->uri,
2041: $env{'form.folderpath'},
2042: $env{'form.title'});
2043: }
2044: } else {
2045: $displayfile=~s/^\/[^\/]*//;
2046: }
2047:
2048: my ($edit_info, $add_to_onload, $add_to_onresize)=
2049: &inserteditinfo($filecontents,$filetype,$displayfile,$symb,
2050: $itemtitle,$env{'form.folderpath'},$request->uri,$action);
2051:
2052: my %options =
2053: ('add_entries' =>
2054: {'onresize' => $add_to_onresize,
2055: 'onload' => $add_to_onload, });
2056: my $header;
2057: if ($env{'request.state'} eq 'construct') {
2058: my $text = 'Authoring Space';
2059: my $href = &Apache::loncommon::authorspace($request->uri);
2060: if ($env{'request.course.id'}) {
2061: my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
2062: my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
2063: if ($href eq "/priv/$cdom/$cnum/") {
2064: $text = 'Course Authoring Space';
2065: }
2066: }
2067: $options{'bread_crumbs'} = [{
2068: 'href' => $href,
2069: 'text' => $text},
2070: {'href' => '',
2071: 'text' => $breadcrumbtext}];
2072: $header = &Apache::loncommon::head_subbox(
2073: &Apache::loncommon::CSTR_pageheader());
2074: }
2075: my $js =
2076: &Apache::edit::js_change_detection().
2077: &Apache::loncommon::resize_textarea_js();
2078: my $start_page = &Apache::loncommon::start_page(undef,$js,
2079: \%options);
2080: $result = $start_page
2081: .$header
2082: .&Apache::lonxml::message_location()
2083: .$edit_info
2084: .&Apache::loncommon::end_page();
2085: }
2086: }
2087: if ($filetype eq 'html') { &writeallows($request->uri); }
2088:
2089: &Apache::lonxml::add_messages(\$result);
2090: $request->print($result);
2091:
2092: return OK;
2093: }
2094:
2095: sub display_title {
2096: my $result;
2097: if ($env{'request.state'} eq 'construct') {
2098: my $title=&Apache::lonnet::gettitle();
2099: if (!defined($title) || $title eq '') {
2100: $title = $env{'request.filename'};
2101: $title = substr($title, rindex($title, '/') + 1);
2102: }
2103: $result = "<script type='text/javascript'>top.document.title = '$title - LON-CAPA "
2104: .&mt('Authoring Space')."';</script>";
2105: }
2106: return $result;
2107: }
2108:
2109: sub get_courseupload_hierarchy {
2110: my ($url,$folderpath,$title) = @_;
2111: my ($symb,$itemtitle,$displaypath);
2112: if ($env{'request.course.id'}) {
2113: if ($folderpath =~ /^supplemental/) {
2114: my @folders = split(/\&/,$folderpath);
2115: my @pathitems;
2116: while (@folders) {
2117: my $folder=shift(@folders);
2118: my $foldername=shift(@folders);
2119: $foldername =~ s/\:(\d*)\:(\w*)\:(\w*):(\d*)\:?(\d*)$//;
2120: push(@pathitems,&unescape($foldername));
2121: }
2122: if ($title) {
2123: push(@pathitems,&unescape($title));
2124: $itemtitle = $title;
2125: }
2126: $displaypath = join(' » ',@pathitems);
2127: } else {
2128: $symb = &Apache::lonnet::symbread($url);
2129: my ($map,$id,$res)=&Apache::lonnet::decode_symb($symb);
2130: my $navmap=Apache::lonnavmaps::navmap->new;
2131: if (ref($navmap)) {
2132: my $res = $navmap->getBySymb($symb);
2133: if (ref($res)) {
2134: my @pathitems =
2135: &Apache::loncommon::get_folder_hierarchy($navmap,$map,1);
2136: $itemtitle = $res->compTitle();
2137: push(@pathitems,$itemtitle);
2138: $displaypath = join(' » ',@pathitems);
2139: }
2140: }
2141: }
2142: }
2143: return ($symb,$itemtitle,$displaypath);
2144: }
2145:
2146: sub debug {
2147: if ($Apache::lonxml::debug eq "1") {
2148: $|=1;
2149: my $request=$Apache::lonxml::request;
2150: if (!$request) {
2151: eval { $request=Apache->request; };
2152: }
2153: if (!$request) {
2154: eval { $request=Apache2::RequestUtil->request; };
2155: }
2156: $request->print('<font size="-2"><pre>DEBUG:'.&HTML::Entities::encode($_[0],'<>&"')."</pre></font>\n");
2157: #&Apache::lonnet::logthis($_[0]);
2158: }
2159: }
2160:
2161: sub show_error_warn_msg {
2162: if (($env{'request.filename'} eq
2163: $Apache::lonnet::perlvar{'lonDocRoot'}.'/res/lib/templates/simpleproblem.problem') &&
2164: (&Apache::lonnet::allowed('mdc',$env{'request.course.id'}))) {
2165: return 1;
2166: }
2167: return (($Apache::lonxml::debug eq 1) ||
2168: ($env{'request.state'} eq 'construct') ||
2169: ($Apache::lonhomework::browse eq 'F'
2170: &&
2171: $env{'form.show_errors'} eq 'on'));
2172: }
2173:
2174: sub error {
2175: my @errors = @_;
2176:
2177: $errorcount++;
2178:
2179: $Apache::lonxml::internal_error=1;
2180:
2181: if (defined($Apache::inputtags::part)) {
2182: if ( @Apache::inputtags::response ) {
2183: push(@errors,
2184: &mt("This error occurred while processing response [_1] in part [_2]",
2185: $Apache::inputtags::response[-1],
2186: $Apache::inputtags::part));
2187: } else {
2188: push(@errors,
2189: &mt("This error occurred while processing part [_1]",
2190: $Apache::inputtags::part));
2191: }
2192: }
2193:
2194: if ( &show_error_warn_msg() ) {
2195: # If printing in construction space, put the error inside <pre></pre>
2196: push(@Apache::lonxml::error_messages,
2197: $Apache::lonxml::warnings_error_header
2198: .'<div class="LC_error">'
2199: .'<b>'.&mt('ERROR:').' </b>'.join("<br />\n",@errors)
2200: ."</div>\n");
2201: $Apache::lonxml::warnings_error_header='';
2202: } else {
2203: my $errormsg;
2204: my ($symb)=&Apache::lonnet::symbread();
2205: if ( !$symb ) {
2206: #public or browsers
2207: $errormsg=&mt("An error occurred while processing this resource. The author has been notified.");
2208: }
2209: my $host=$Apache::lonnet::perlvar{'lonHostID'};
2210: push(@errors,
2211: &mt("The error occurred on host [_1]",
2212: "<tt>$host</tt>"));
2213:
2214: my $msg = join('<br />', @errors);
2215:
2216: #notify author
2217: &Apache::lonmsg::author_res_msg($env{'request.filename'},$msg);
2218: #notify course
2219: if ( $symb && $env{'request.course.id'} ) {
2220: my $cnum=$env{'course.'.$env{'request.course.id'}.'.num'};
2221: my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
2222: my (undef,%users)=&Apache::lonmsg::decide_receiver(undef,0,1,1,1);
2223: my $declutter=&Apache::lonnet::declutter($env{'request.filename'});
2224: my $baseurl = &Apache::lonnet::clutter($declutter);
2225: my @userlist;
2226: foreach (keys(%users)) {
2227: my ($user,$domain) = split(/:/, $_);
2228: push(@userlist,"$user:$domain");
2229: my $key=$declutter.'_'.$user.'_'.$domain;
2230: my %lastnotified=&Apache::lonnet::get('nohist_xmlerrornotifications',
2231: [$key],
2232: $cdom,$cnum);
2233: my $now=time;
2234: if ($now-$lastnotified{$key}>86400) {
2235: my $title = &Apache::lonnet::gettitle($symb);
2236: my $sentmessage;
2237: &Apache::lonmsg::user_normal_msg($user,$domain,
2238: "Error [$title]",$msg,'',$baseurl,'','',
2239: \$sentmessage,$symb,$title,1);
2240: &Apache::lonnet::put('nohist_xmlerrornotifications',
2241: {$key => $now},
2242: $cdom,$cnum);
2243: }
2244: }
2245: if ($env{'request.role.adv'}) {
2246: $errormsg=&mt("An error occurred while processing this resource. The course personnel ([_1]) and the author have been notified.",join(', ',@userlist));
2247: } else {
2248: $errormsg=&mt("An error occurred while processing this resource. The instructor has been notified.");
2249: }
2250: }
2251: push(@Apache::lonxml::error_messages,"<span class=\"LC_warning\">$errormsg</span><br />");
2252: }
2253: }
2254:
2255: sub warning {
2256: $warningcount++;
2257:
2258: if ($env{'form.grade_target'} ne 'tex') {
2259: if ( &show_error_warn_msg() ) {
2260: push(@Apache::lonxml::warning_messages,
2261: $Apache::lonxml::warnings_error_header
2262: .'<div class="LC_warning">'
2263: .&mt('[_1]W[_2]ARNING','<b>','</b>')."<b>:</b> ".join('<br />',@_)
2264: ."</div>\n"
2265: );
2266: $Apache::lonxml::warnings_error_header='';
2267: }
2268: }
2269: }
2270:
2271: sub info {
2272: if ($env{'form.grade_target'} ne 'tex'
2273: && $env{'request.state'} eq 'construct') {
2274: push(@Apache::lonxml::info_messages,join('<br />',@_)."<br />\n");
2275: }
2276: }
2277:
2278: sub message_location {
2279: return '__LONCAPA_INTERNAL_MESSAGE_LOCATION__';
2280: }
2281:
2282: sub add_messages {
2283: my ($msg)=@_;
2284: my $result=join(' ',
2285: @Apache::lonxml::info_messages,
2286: @Apache::lonxml::error_messages,
2287: @Apache::lonxml::warning_messages);
2288: undef(@Apache::lonxml::info_messages);
2289: undef(@Apache::lonxml::error_messages);
2290: undef(@Apache::lonxml::warning_messages);
2291: $$msg=~s/__LONCAPA_INTERNAL_MESSAGE_LOCATION__/$result/;
2292: $$msg=~s/__LONCAPA_INTERNAL_MESSAGE_LOCATION__//g;
2293: }
2294:
2295: sub get_param {
2296: my ($param,$parstack,$safeeval,$context,$case_insensitive, $noelide) = @_;
2297:
2298: if ( ! $context ) { $context = -1; }
2299: my $args ='';
2300: if ( $#$parstack > (-2-$context) ) { $args=$$parstack[$context]; }
2301: if ( ! $Apache::lonxml::usestyle ) {
2302: $args=$Apache::lonxml::style_values.$args;
2303: }
2304:
2305:
2306: if ($noelide) {
2307: # $args =~ s/\\'/'/g;
2308: $args =~ s/'\$/'\\\$/g;
2309: }
2310:
2311: if ( ! $args ) { return undef; }
2312: if ( $case_insensitive ) {
2313: if ($args =~ s/(my (?:.*))(\$\Q$param\E[,\)])/$1.lc($2)/ei) {
2314:
2315: return &Apache::run::run("{$args;".'return $'.$param.'}',
2316: $safeeval); #'
2317: } else {
2318: return undef;
2319: }
2320: } else {
2321: if ( $args =~ /my .*\$\Q$param\E[,\)]/ ) {
2322:
2323: return &Apache::run::run("{$args;".'return $'.$param.'}',
2324: $safeeval); #'
2325: } else {
2326: return undef;
2327: }
2328: }
2329: }
2330:
2331: sub get_param_var {
2332: my ($param,$parstack,$safeeval,$context,$case_insensitive) = @_;
2333: if ( ! $context ) { $context = -1; }
2334: my $args ='';
2335: if ( $#$parstack > (-2-$context) ) { $args=$$parstack[$context]; }
2336: if ( ! $Apache::lonxml::usestyle ) {
2337: $args=$Apache::lonxml::style_values.$args;
2338: }
2339: &Apache::lonxml::debug("Args are $args param is $param");
2340: if ($case_insensitive) {
2341: if (! ($args=~s/(my (?:.*))(\$\Q$param\E[,\)])/$1.lc($2)/ei)) {
2342: return undef;
2343: }
2344: } elsif ( $args !~ /my .*\$\Q$param\E[,\)]/ ) { return undef; }
2345: my $value=&Apache::run::run("{$args;".'return $'.$param.'}',$safeeval); #'
2346: &Apache::lonxml::debug("first run is $value");
2347: if ($value =~ /^[\$\@\%][a-zA-Z_]\w*$/) {
2348: &Apache::lonxml::debug("doing second");
2349: my @result=&Apache::run::run("return $value",$safeeval,1);
2350: if (!defined($result[0])) {
2351: return $value
2352: } else {
2353: if (wantarray) { return @result; } else { return $result[0]; }
2354: }
2355: } else {
2356: return $value;
2357: }
2358: }
2359:
2360: sub register_insert_xml {
2361: my $parser = HTML::LCParser->new($Apache::lonnet::perlvar{'lonTabDir'}
2362: .'/insertlist.xml');
2363: my ($tagnum,$in_help)=(0,0);
2364: my @alltags;
2365: my $tag;
2366: while (my $token = $parser->get_token()) {
2367: if ($token->[0] eq 'S') {
2368: my $key;
2369: if ($token->[1] eq 'tag') {
2370: $tag = $token->[2]{'name'};
2371: if (defined($tag)) {
2372: $insertlist{$tagnum.'.tag'} = $tag;
2373: $insertlist{$tag.'.num'} = $tagnum;
2374: push(@alltags,$tag);
2375: }
2376: } elsif ($in_help && $token->[1] eq 'file') {
2377: $key = $tag.'.helpfile';
2378: } elsif ($in_help && $token->[1] eq 'description') {
2379: $key = $tag.'.helpdesc';
2380: } elsif ($token->[1] eq 'description' ||
2381: $token->[1] eq 'color' ||
2382: $token->[1] eq 'show' ) {
2383: $key = $tag.'.'.$token->[1];
2384: } elsif ($token->[1] eq 'insert_sub') {
2385: $key = $tag.'.function';
2386: } elsif ($token->[1] eq 'help') {
2387: $in_help=1;
2388: } elsif ($token->[1] eq 'allow') {
2389: $key = $tag.'.allow';
2390: }
2391: if (defined($key)) {
2392: $insertlist{$key} = $parser->get_text();
2393: $insertlist{$key} =~ s/(^\s*|\s*$ )//gx;
2394: }
2395: } elsif ($token->[0] eq 'E') {
2396: if ($token->[1] eq 'tag') {
2397: undef($tag);
2398: $tagnum++;
2399: } elsif ($token->[1] eq 'help') {
2400: undef($in_help);
2401: }
2402: }
2403: }
2404:
2405: # parse the allows and ignore tags set to <show>no</show>
2406: foreach my $tag (@alltags) {
2407: next if (!exists($insertlist{$tag.'.allow'}));
2408: my $allow = $insertlist{$tag.'.allow'};
2409: foreach my $element (split(',',$allow)) {
2410: $element =~ s/(^\s*|\s*$ )//gx;
2411: if (!exists($insertlist{$element.'.show'})
2412: || $insertlist{$element.'.show'} ne 'no') {
2413: push(@{ $insertlist{$tag.'.which'} },$element);
2414: }
2415: }
2416: }
2417: }
2418:
2419: sub register_insert {
2420: return ®ister_insert_xml(@_);
2421: # &dump_insertlist('2');
2422: }
2423:
2424: sub dump_insertlist {
2425: my ($ext) = @_;
2426: open(XML,">","/tmp/insertlist.xml.$ext");
2427: print XML ("<insertlist>");
2428: my $i=0;
2429:
2430: while (exists($insertlist{"$i.tag"})) {
2431: my $tag = $insertlist{"$i.tag"};
2432: print XML ("
2433: \t<tag name=\"$tag\">");
2434: if (defined($insertlist{"$tag.description"})) {
2435: print XML ("
2436: \t\t<description>".$insertlist{"$tag.description"}."</description>");
2437: }
2438: if (defined($insertlist{"$tag.color"})) {
2439: print XML ("
2440: \t\t<color>".$insertlist{"$tag.color"}."</color>");
2441: }
2442: if (defined($insertlist{"$tag.function"})) {
2443: print XML ("
2444: \t\t<insert_sub>".$insertlist{"$tag.function"}."</insert_sub>");
2445: }
2446: if (defined($insertlist{"$tag.show"})
2447: && $insertlist{"$tag.show"} ne 'yes') {
2448: print XML ("
2449: \t\t<show>".$insertlist{"$tag.show"}."</show>");
2450: }
2451: if (defined($insertlist{"$tag.helpfile"})) {
2452: print XML ("
2453: \t\t<help>
2454: \t\t\t<file>".$insertlist{"$tag.helpfile"}."</file>");
2455: if ($insertlist{"$tag.helpdesc"} ne '') {
2456: print XML ("
2457: \t\t\t<description>".$insertlist{"$tag.helpdesc"}."</description>");
2458: }
2459: print XML ("
2460: \t\t</help>");
2461: }
2462: if (defined($insertlist{"$tag.which"})) {
2463: print XML ("
2464: \t\t<allow>".join(',',sort(@{ $insertlist{"$tag.which"} }))."</allow>");
2465: }
2466: print XML ("
2467: \t</tag>");
2468: $i++;
2469: }
2470: print XML ("\n</insertlist>\n");
2471: close(XML);
2472: }
2473:
2474: sub description {
2475: my ($token)=@_;
2476: my $tag = &get_tag($token);
2477: return $insertlist{$tag.'.description'};
2478: }
2479:
2480: # Returns a list containing the help file, and the description
2481: sub helpinfo {
2482: my ($token)=@_;
2483: my $tag = &get_tag($token);
2484: return ($insertlist{$tag.'.helpfile'}, &mt($insertlist{$tag.'.helpdesc'}));
2485: }
2486:
2487: sub get_tag {
2488: my ($token)=@_;
2489: my $tagnum;
2490: my $tag=$token->[1];
2491: foreach my $namespace (reverse(@Apache::lonxml::namespace)) {
2492: my $testtag = $namespace.'::'.$tag;
2493: $tagnum = $insertlist{"$testtag.num"};
2494: last if (defined($tagnum));
2495: }
2496: if (!defined($tagnum)) {
2497: $tagnum = $Apache::lonxml::insertlist{"$tag.num"};
2498: }
2499: return $insertlist{"$tagnum.tag"};
2500: }
2501:
2502: ############################################################
2503: # PDF-FORM-METHODS
2504:
2505: =pod
2506:
2507: =item &print_pdf_radiobutton(fieldname, value)
2508:
2509: Returns a latexline to generate a PDF-Form-Radiobutton.
2510: Note: Radiobuttons with equal names are automaticly grouped
2511: in a selection-group.
2512:
2513: $fieldname: PDF internalname of the radiobutton(group)
2514: $value: Value of radiobutton
2515:
2516: =cut
2517: sub print_pdf_radiobutton {
2518: my ($fieldname, $value) = @_;
2519: return '\radioButton[\symbolchoice{circle}]{'
2520: .$fieldname.'}{10bp}{10bp}{'.$value.'}';
2521: }
2522:
2523:
2524: =pod
2525:
2526: =item &print_pdf_start_combobox(fieldname)
2527:
2528: Starts a latexline to generate a PDF-Form-Combobox with text.
2529:
2530: $fieldname: PDF internal name of the Combobox
2531:
2532: =cut
2533: sub print_pdf_start_combobox {
2534: my $result;
2535: my ($fieldName) = @_;
2536: $result .= '\begin{tabularx}{\textwidth}{p{2.5cm}X}'."\n";
2537: $result .= '\comboBox[]{'.$fieldName.'}{2.3cm}{14bp}{'; #
2538:
2539: return $result;
2540: }
2541:
2542:
2543: =pod
2544:
2545: =item &print_pdf_add_combobox_option(options)
2546:
2547: Generates a latexline to add Options to a PDF-Form-ComboBox.
2548:
2549: $option: PDF internal name of the Combobox-Option
2550:
2551: =cut
2552: sub print_pdf_add_combobox_option {
2553:
2554: my $result;
2555: my ($option) = @_;
2556:
2557: $result .= '('.$option.')';
2558:
2559: return $result;
2560: }
2561:
2562:
2563: =pod
2564:
2565: =item &print_pdf_end_combobox(text) {
2566:
2567: Returns latexcode to end a PDF-Form-Combobox with text.
2568:
2569: =cut
2570: sub print_pdf_end_combobox {
2571: my $result;
2572: my ($text) = @_;
2573:
2574: $result .= '}&'.$text."\\\\\n";
2575: $result .= '\end{tabularx}' . "\n";
2576: $result .= '\hspace{2mm}' . "\n";
2577: return $result;
2578: }
2579:
2580:
2581: =pod
2582:
2583: =item &print_pdf_hiddenField(fieldname, user, domain)
2584:
2585: Returns a latexline to generate a PDF-Form-hiddenField with userdata.
2586:
2587: $fieldname label for hiddentextfield
2588: $user: name of user
2589: $domain: domain of user
2590:
2591: =cut
2592: sub print_pdf_hiddenfield {
2593: my $result;
2594: my ($fieldname, $user, $domain) = @_;
2595:
2596: $result .= '\textField [\F{\FHidden}\F{-\FPrint}\V{'.$domain.'&'.$user.'}]{'.$fieldname.'}{0in}{0in}'."\n";
2597:
2598: return $result;
2599: }
2600:
2601: 1;
2602: __END__
2603:
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