1: # The LearningOnline Network with CAPA
2: # XML Parser Module
3: #
4: # $Id: lonxml.pm,v 1.572 2024/04/17 15:15:13 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(":base_math");
677: $safeeval->permit("sort");
678: $safeeval->permit("time");
679: $safeeval->permit("caller");
680: $safeeval->deny("rand");
681: $safeeval->deny("srand");
682: $safeeval->deny(":base_io");
683: $safehole->wrap(\&Apache::scripttag::xmlparse,$safeeval,'&xmlparse');
684: $safehole->wrap(\&Apache::outputtags::multipart,$safeeval,'&multipart');
685: $safehole->wrap(\&Apache::lonnet::EXT,$safeeval,'&EXT');
686: $safehole->wrap(\&Apache::chemresponse::chem_standard_order,$safeeval,
687: '&chem_standard_order');
688: $safehole->wrap(\&Apache::response::check_status,$safeeval,'&check_status');
689: $safehole->wrap(\&Apache::response::implicit_multiplication,$safeeval,'&implicit_multiplication');
690:
691: $safehole->wrap(\&Apache::lonmaxima::maxima_eval,$safeeval,'&maxima_eval');
692: $safehole->wrap(\&Apache::lonmaxima::maxima_check,$safeeval,'&maxima_check');
693: $safehole->wrap(\&Apache::lonmaxima::maxima_cas_formula_fix,$safeeval,
694: '&maxima_cas_formula_fix');
695:
696: $safehole->wrap(\&Apache::lonr::r_eval,$safeeval,'&r_eval');
697: $safehole->wrap(\&Apache::lonr::Rentry,$safeeval,'&Rentry');
698: $safehole->wrap(\&Apache::lonr::Rarray,$safeeval,'&Rarray');
699: $safehole->wrap(\&Apache::lonr::r_check,$safeeval,'&r_check');
700: $safehole->wrap(\&Apache::lonr::r_cas_formula_fix,$safeeval,
701: '&r_cas_formula_fix');
702:
703: $safehole->wrap(\&Apache::caparesponse::capa_formula_fix,$safeeval,
704: '&capa_formula_fix');
705:
706: $safehole->wrap(\&Apache::lonlocal::locallocaltime,$safeeval,
707: '&locallocaltime');
708:
709: $safehole->wrap(\&Math::Cephes::asin,$safeeval,'&asin');
710: $safehole->wrap(\&Math::Cephes::acos,$safeeval,'&acos');
711: $safehole->wrap(\&Math::Cephes::atan,$safeeval,'&atan');
712: $safehole->wrap(\&Math::Cephes::sinh,$safeeval,'&sinh');
713: $safehole->wrap(\&Math::Cephes::cosh,$safeeval,'&cosh');
714: $safehole->wrap(\&Math::Cephes::tanh,$safeeval,'&tanh');
715: $safehole->wrap(\&Math::Cephes::asinh,$safeeval,'&asinh');
716: $safehole->wrap(\&Math::Cephes::acosh,$safeeval,'&acosh');
717: $safehole->wrap(\&Math::Cephes::atanh,$safeeval,'&atanh');
718: $safehole->wrap(\&Math::Cephes::erf,$safeeval,'&erf');
719: $safehole->wrap(\&Math::Cephes::erfc,$safeeval,'&erfc');
720: $safehole->wrap(\&Math::Cephes::j0,$safeeval,'&j0');
721: $safehole->wrap(\&Math::Cephes::j1,$safeeval,'&j1');
722: $safehole->wrap(\&Math::Cephes::jn,$safeeval,'&jn');
723: $safehole->wrap(\&Math::Cephes::jv,$safeeval,'&jv');
724: $safehole->wrap(\&Math::Cephes::y0,$safeeval,'&y0');
725: $safehole->wrap(\&Math::Cephes::y1,$safeeval,'&y1');
726: $safehole->wrap(\&Math::Cephes::yn,$safeeval,'&yn');
727: $safehole->wrap(\&Math::Cephes::yv,$safeeval,'&yv');
728:
729: $safehole->wrap(\&Math::Cephes::bdtr ,$safeeval,'&bdtr' );
730: $safehole->wrap(\&Math::Cephes::bdtrc ,$safeeval,'&bdtrc' );
731: $safehole->wrap(\&Math::Cephes::bdtri ,$safeeval,'&bdtri' );
732: $safehole->wrap(\&Math::Cephes::btdtr ,$safeeval,'&btdtr' );
733: $safehole->wrap(\&Math::Cephes::chdtr ,$safeeval,'&chdtr' );
734: $safehole->wrap(\&Math::Cephes::chdtrc,$safeeval,'&chdtrc');
735: $safehole->wrap(\&Math::Cephes::chdtri,$safeeval,'&chdtri');
736: $safehole->wrap(\&Math::Cephes::fdtr ,$safeeval,'&fdtr' );
737: $safehole->wrap(\&Math::Cephes::fdtrc ,$safeeval,'&fdtrc' );
738: $safehole->wrap(\&Math::Cephes::fdtri ,$safeeval,'&fdtri' );
739: $safehole->wrap(\&Math::Cephes::gdtr ,$safeeval,'&gdtr' );
740: $safehole->wrap(\&Math::Cephes::gdtrc ,$safeeval,'&gdtrc' );
741: $safehole->wrap(\&Math::Cephes::nbdtr ,$safeeval,'&nbdtr' );
742: $safehole->wrap(\&Math::Cephes::nbdtrc,$safeeval,'&nbdtrc');
743: $safehole->wrap(\&Math::Cephes::nbdtri,$safeeval,'&nbdtri');
744: $safehole->wrap(\&Math::Cephes::ndtr ,$safeeval,'&ndtr' );
745: $safehole->wrap(\&Math::Cephes::ndtri ,$safeeval,'&ndtri' );
746: $safehole->wrap(\&Math::Cephes::pdtr ,$safeeval,'&pdtr' );
747: $safehole->wrap(\&Math::Cephes::pdtrc ,$safeeval,'&pdtrc' );
748: $safehole->wrap(\&Math::Cephes::pdtri ,$safeeval,'&pdtri' );
749: $safehole->wrap(\&Math::Cephes::stdtr ,$safeeval,'&stdtr' );
750: $safehole->wrap(\&Math::Cephes::stdtri,$safeeval,'&stdtri');
751:
752: $safehole->wrap(\&Math::Cephes::Matrix::mat,$safeeval,'&mat');
753: $safehole->wrap(\&Math::Cephes::Matrix::new,$safeeval,
754: '&Math::Cephes::Matrix::new');
755: $safehole->wrap(\&Math::Cephes::Matrix::coef,$safeeval,
756: '&Math::Cephes::Matrix::coef');
757: $safehole->wrap(\&Math::Cephes::Matrix::clr,$safeeval,
758: '&Math::Cephes::Matrix::clr');
759: $safehole->wrap(\&Math::Cephes::Matrix::add,$safeeval,
760: '&Math::Cephes::Matrix::add');
761: $safehole->wrap(\&Math::Cephes::Matrix::sub,$safeeval,
762: '&Math::Cephes::Matrix::sub');
763: $safehole->wrap(\&Math::Cephes::Matrix::mul,$safeeval,
764: '&Math::Cephes::Matrix::mul');
765: $safehole->wrap(\&Math::Cephes::Matrix::div,$safeeval,
766: '&Math::Cephes::Matrix::div');
767: $safehole->wrap(\&Math::Cephes::Matrix::inv,$safeeval,
768: '&Math::Cephes::Matrix::inv');
769: $safehole->wrap(\&Math::Cephes::Matrix::transp,$safeeval,
770: '&Math::Cephes::Matrix::transp');
771: $safehole->wrap(\&Math::Cephes::Matrix::simq,$safeeval,
772: '&Math::Cephes::Matrix::simq');
773: $safehole->wrap(\&Math::Cephes::Matrix::mat_to_vec,$safeeval,
774: '&Math::Cephes::Matrix::mat_to_vec');
775: $safehole->wrap(\&Math::Cephes::Matrix::vec_to_mat,$safeeval,
776: '&Math::Cephes::Matrix::vec_to_mat');
777: $safehole->wrap(\&Math::Cephes::Matrix::check,$safeeval,
778: '&Math::Cephes::Matrix::check');
779: $safehole->wrap(\&Math::Cephes::Matrix::check,$safeeval,
780: '&Math::Cephes::Matrix::check');
781:
782: # $safehole->wrap(\&Math::Cephes::new_fract,$safeeval,'&new_fract');
783: # $safehole->wrap(\&Math::Cephes::radd,$safeeval,'&radd');
784: # $safehole->wrap(\&Math::Cephes::rsub,$safeeval,'&rsub');
785: # $safehole->wrap(\&Math::Cephes::rmul,$safeeval,'&rmul');
786: # $safehole->wrap(\&Math::Cephes::rdiv,$safeeval,'&rdiv');
787: # $safehole->wrap(\&Math::Cephes::euclid,$safeeval,'&euclid');
788:
789: $safehole->wrap(\&Math::Random::random_beta,$safeeval,'&math_random_beta');
790: $safehole->wrap(\&Math::Random::random_chi_square,$safeeval,'&math_random_chi_square');
791: $safehole->wrap(\&Math::Random::random_exponential,$safeeval,'&math_random_exponential');
792: $safehole->wrap(\&Math::Random::random_f,$safeeval,'&math_random_f');
793: $safehole->wrap(\&Math::Random::random_gamma,$safeeval,'&math_random_gamma');
794: $safehole->wrap(\&Math::Random::random_multivariate_normal,$safeeval,'&math_random_multivariate_normal');
795: $safehole->wrap(\&Math::Random::random_multinomial,$safeeval,'&math_random_multinomial');
796: $safehole->wrap(\&Math::Random::random_noncentral_chi_square,$safeeval,'&math_random_noncentral_chi_square');
797: $safehole->wrap(\&Math::Random::random_noncentral_f,$safeeval,'&math_random_noncentral_f');
798: $safehole->wrap(\&Math::Random::random_normal,$safeeval,'&math_random_normal');
799: $safehole->wrap(\&Math::Random::random_permutation,$safeeval,'&math_random_permutation');
800: $safehole->wrap(\&Math::Random::random_permuted_index,$safeeval,'&math_random_permuted_index');
801: $safehole->wrap(\&Math::Random::random_uniform,$safeeval,'&math_random_uniform');
802: $safehole->wrap(\&Math::Random::random_poisson,$safeeval,'&math_random_poisson');
803: $safehole->wrap(\&Math::Random::random_uniform_integer,$safeeval,'&math_random_uniform_integer');
804: $safehole->wrap(\&Math::Random::random_negative_binomial,$safeeval,'&math_random_negative_binomial');
805: $safehole->wrap(\&Math::Random::random_binomial,$safeeval,'&math_random_binomial');
806: $safehole->wrap(\&Math::Random::random_seed_from_phrase,$safeeval,'&random_seed_from_phrase');
807: $safehole->wrap(\&Math::Random::random_set_seed_from_phrase,$safeeval,'&random_set_seed_from_phrase');
808: $safehole->wrap(\&Math::Random::random_get_seed,$safeeval,'&random_get_seed');
809: $safehole->wrap(\&Math::Random::random_set_seed,$safeeval,'&random_set_seed');
810: $safehole->wrap(\&Apache::loncommon::languages,$safeeval,'&languages');
811: $safehole->wrap(\&Apache::lonxml::error,$safeeval,'&LONCAPA_INTERNAL_ERROR');
812: $safehole->wrap(\&Apache::lonxml::debug,$safeeval,'&LONCAPA_INTERNAL_DEBUG');
813: $safehole->wrap(\&Apache::lonnet::logthis,$safeeval,'&LONCAPA_INTERNAL_LOGTHIS');
814: $safehole->wrap(\&Apache::inputtags::finalizeawards,$safeeval,'&LONCAPA_INTERNAL_FINALIZEAWARDS');
815: $safehole->wrap(\&Apache::caparesponse::get_sigrange,$safeeval,'&LONCAPA_INTERNAL_get_sigrange');
816: $safehole->wrap(\&Apache::functionplotresponse::fpr_val,$safeeval,'&fpr_val');
817: $safehole->wrap(\&Apache::functionplotresponse::fpr_f,$safeeval,'&fpr_f');
818: $safehole->wrap(\&Apache::functionplotresponse::fpr_dfdx,$safeeval,'&fpr_dfdx');
819: $safehole->wrap(\&Apache::functionplotresponse::fpr_d2fdx2,$safeeval,'&fpr_d2fdx2');
820: $safehole->wrap(\&Apache::functionplotresponse::fpr_vectorcoords,$safeeval,'&fpr_vectorcoords');
821: $safehole->wrap(\&Apache::functionplotresponse::fpr_objectcoords,$safeeval,'&fpr_objectcoords');
822: $safehole->wrap(\&Apache::functionplotresponse::fpr_vectorlength,$safeeval,'&fpr_vectorlength');
823: $safehole->wrap(\&Apache::functionplotresponse::fpr_vectorangle,$safeeval,'&fpr_vectorangle');
824: $safehole->wrap(\&Math::Calculus::Expression::math_calculus_expression,$safeeval,'&math_calculus_expression');
825: $safehole->wrap(\&Number::FormatEng::format_eng,$safeeval,'&number_format_eng');
826: $safehole->wrap(\&Number::FormatEng::format_pref,$safeeval,'&number_format_pref');
827:
828: # use Data::Dumper;
829: # $safehole->wrap(\&Data::Dumper::Dumper,$safeeval,'&LONCAPA_INTERNAL_Dumper');
830: #need to inspect this class of ops
831: # $safeeval->deny(":base_orig");
832: $safeeval->permit("require");
833: $safeinit .= ';$external::target="'.$target.'";';
834: &Apache::run::run($safeinit,$safeeval);
835: my $rawrndseed = &initialize_rndseed($safeeval);
836: if ($target eq 'grade') {
837: $Apache::lonhomework::rawrndseed = $rawrndseed;
838: }
839: }
840:
841: sub clean_safespace {
842: my ($safeeval) = @_;
843: delete_package_recurse($safeeval->{Root});
844: }
845:
846: sub delete_package_recurse {
847: my ($package) = @_;
848: my @subp;
849: {
850: no strict 'refs';
851: while (my ($key,$val) = each(%{*{"$package\::"}})) {
852: if (!defined($val)) { next; }
853: local (*ENTRY) = $val;
854: if (defined *ENTRY{HASH} && $key =~ /::$/ &&
855: $key ne "main::" && $key ne "<none>::")
856: {
857: my ($p) = $package ne "main" ? "$package\::" : "";
858: ($p .= $key) =~ s/::$//;
859: push(@subp,$p);
860: }
861: }
862: }
863: foreach my $p (@subp) {
864: delete_package_recurse($p);
865: }
866: Symbol::delete_package($package);
867: }
868:
869: sub initialize_rndseed {
870: my ($safeeval)=@_;
871: my $rndseed;
872: my ($symb,$courseid,$domain,$name) = &Apache::lonnet::whichuser();
873: $rndseed=&Apache::lonnet::rndseed($symb,$courseid,$domain,$name);
874: my $safeinit = '$external::randomseed="'.$rndseed.'";';
875: &Apache::lonxml::debug("Setting rndseed to $rndseed");
876: &Apache::run::run($safeinit,$safeeval);
877: return $rndseed;
878: }
879:
880: sub default_homework_load {
881: my ($safeeval)=@_;
882: &Apache::lonxml::debug('Loading default_homework');
883: my $default=&Apache::lonnet::getfile($Apache::lonnet::perlvar{'lonIncludes'}.
884: '/default_homework.lcpm');
885: if ($default eq -1) {
886: &Apache::lonxml::error("<b>Unable to find <i>default_homework.lcpm</i></b>");
887: } else {
888: &Apache::run::run($default,$safeeval);
889: $Apache::lonxml::default_homework_loaded=1;
890: }
891: }
892:
893: {
894: my $alarm_depth;
895: sub init_alarm {
896: alarm(0);
897: $alarm_depth=0;
898: }
899:
900: sub start_alarm {
901: if ($alarm_depth<1) {
902: my $old=alarm($Apache::lonnet::perlvar{'lonScriptTimeout'});
903: if ($old) {
904: &Apache::lonxml::error("Cancelled an alarm of $old, this shouldn't occur.");
905: }
906: }
907: $alarm_depth++;
908: }
909:
910: sub end_alarm {
911: $alarm_depth--;
912: if ($alarm_depth<1) { alarm(0); }
913: }
914: }
915: my $metamode_was;
916: sub startredirection {
917: if (!$Apache::lonxml::redirection) {
918: $metamode_was=$Apache::lonxml::metamode;
919: }
920: $Apache::lonxml::metamode=0;
921: $Apache::lonxml::redirection++;
922: push (@Apache::lonxml::outputstack, '');
923: }
924:
925: sub endredirection {
926: if (!$Apache::lonxml::redirection) {
927: &Apache::lonxml::error("Endredirection was called before a startredirection, perhaps you have unbalanced tags. Some debugging information:".join ":",caller);
928: return '';
929: }
930: $Apache::lonxml::redirection--;
931: if (!$Apache::lonxml::redirection) {
932: $Apache::lonxml::metamode=$metamode_was;
933: }
934: pop @Apache::lonxml::outputstack;
935: }
936: sub in_redirection {
937: return ($Apache::lonxml::redirection > 0)
938: }
939:
940: sub end_tag {
941: my ($tagstack,$parstack,$token)=@_;
942: pop(@$tagstack);
943: pop(@$parstack);
944: &decreasedepth($token);
945: }
946:
947: sub initdepth {
948: @Apache::lonxml::depthcounter=();
949: undef($Apache::lonxml::last_depth_count);
950: }
951:
952:
953: my @timers;
954: my $lasttime;
955: # @Apache::lonxml::depthcounter -> count of tags that exist so
956: # far at each level
957: # $Apache::lonxml::last_depth_count -> when ascending, need to
958: # remember the count for the level below the current level (for
959: # example going from 1_2 -> 1 -> 1_3 need to remember the 2 )
960:
961: sub increasedepth {
962: my ($token) = @_;
963: push(@Apache::lonxml::depthcounter,$Apache::lonxml::last_depth_count+1);
964: undef($Apache::lonxml::last_depth_count);
965: my $time;
966: if ($Apache::lonxml::debug eq "1") {
967: push(@timers,[&gettimeofday()]);
968: $time=&tv_interval($lasttime);
969: $lasttime=[&gettimeofday()];
970: }
971: my $spacing=' 'x($#Apache::lonxml::depthcounter);
972: $Apache::lonxml::curdepth=join('_',@Apache::lonxml::depthcounter);
973: # &Apache::lonxml::debug("s$spacing$Apache::lonxml::depth : $Apache::lonxml::olddepth : $Apache::lonxml::curdepth : $token->[1] : $time");
974: #print "<br />s $Apache::lonxml::depth : $Apache::lonxml::olddepth : $curdepth : $token->[1]\n";
975: }
976:
977: sub decreasedepth {
978: my ($token) = @_;
979: if ( $#Apache::lonxml::depthcounter == -1) {
980: &Apache::lonxml::warning(&mt("Missing tags, unable to properly run file."));
981: }
982: $Apache::lonxml::last_depth_count = pop(@Apache::lonxml::depthcounter);
983:
984: my ($timer,$time);
985: if ($Apache::lonxml::debug eq "1") {
986: $timer=pop(@timers);
987: $time=&tv_interval($lasttime);
988: $lasttime=[&gettimeofday()];
989: }
990: my $spacing=' 'x($#Apache::lonxml::depthcounter);
991: $Apache::lonxml::curdepth = join('_',@Apache::lonxml::depthcounter);
992: # &Apache::lonxml::debug("e$spacing$Apache::lonxml::depth : $Apache::lonxml::olddepth : $Apache::lonxml::curdepth : $token->[1] : $time : ".&tv_interval($timer));
993: #print "<br />e $Apache::lonxml::depth : $Apache::lonxml::olddepth : $token->[1] : $curdepth\n";
994: }
995:
996: sub get_id {
997: my ($parstack,$safeeval)=@_;
998: my $id= &Apache::lonxml::get_param('id',$parstack,$safeeval);
999: if ($env{'request.state'} eq 'construct' && $id =~ /([._]|[^\w\s\-])/) {
1000: &error(&mt('ID [_1] contains invalid characters. IDs are only allowed to contain letters, numbers, spaces and -','"<tt>'.$id.'</tt>"'));
1001: }
1002: if ($id =~ /^\s*$/) { $id = $Apache::lonxml::curdepth; }
1003: return $id;
1004: }
1005:
1006: sub get_all_text_unbalanced {
1007: #there is a copy of this in lonpublisher.pm
1008: my($tag,$pars)= @_;
1009: my $token;
1010: my $result='';
1011: $tag='<'.$tag.'>';
1012: while ($token = $$pars[-1]->get_token) {
1013: if (($token->[0] eq 'T')||($token->[0] eq 'C')||($token->[0] eq 'D')) {
1014: if ($token->[0] eq 'T' && $token->[2]) {
1015: $result.='<![CDATA['.$token->[1].']]>';
1016: } else {
1017: $result.=$token->[1];
1018: }
1019: } elsif ($token->[0] eq 'PI') {
1020: $result.=$token->[2];
1021: } elsif ($token->[0] eq 'S') {
1022: $result.=$token->[4];
1023: } elsif ($token->[0] eq 'E') {
1024: $result.=$token->[2];
1025: }
1026: if ($result =~ /\Q$tag\E/is) {
1027: ($result,my $redo)=$result =~ /(.*)\Q$tag\E(.*)/is;
1028: #&Apache::lonxml::debug('Got a winner with leftovers ::'.$2);
1029: #&Apache::lonxml::debug('Result is :'.$1);
1030: $redo=$tag.$redo;
1031: &Apache::lonxml::newparser($pars,\$redo);
1032: last;
1033: }
1034: }
1035: return $result
1036:
1037: }
1038:
1039: #########################################################################
1040: # #
1041: # bubble line counter management #
1042: # #
1043: #########################################################################
1044:
1045: =pod
1046:
1047: For bubble grading mode and exam bubble printing mode, the tracking of
1048: the current 'bubble line number' is stored in the %env element
1049: 'form.counter', and is modifed and handled by the following routines.
1050:
1051: The value of it is stored in $Apache:lonxml::counter when live and
1052: stored back to env after done.
1053:
1054: =item &increment_counter($increment, $part_response);
1055:
1056: Increments the internal counter environment variable a specified amount
1057:
1058: Optional Arguments:
1059: $increment - amount to increment by (defaults to 1)
1060: Also 1 if the value is negative or zero.
1061: $part_response - A concatenation of the part and response id
1062: identifying exactly what is being 'answered'.
1063:
1064:
1065: =cut
1066:
1067: sub increment_counter {
1068: my ($increment, $part_response) = @_;
1069: if ($env{'form.grade_noincrement'}) { return; }
1070: if (!defined($increment) || $increment le 0) {
1071: $increment = 1;
1072: }
1073: $Apache::lonxml::counter += $increment;
1074:
1075: # If the caller supplied the response_id parameter,
1076: # Maintain its counter.. creating if necessary.
1077:
1078: if (defined($part_response)) {
1079: if (!defined($Apache::lonxml::counters_per_part{$part_response})) {
1080: $Apache::lonxml::counters_per_part{$part_response} = 0;
1081: }
1082: $Apache::lonxml::counters_per_part{$part_response} += $increment;
1083: my $new_value = $Apache::lonxml::counters_per_part{$part_response};
1084: }
1085:
1086: $Apache::lonxml::counter_changed=1;
1087: }
1088:
1089: =pod
1090:
1091: =item &init_counter($increment);
1092:
1093: Initialize the internal counter environment variable
1094:
1095: =cut
1096:
1097: sub init_counter {
1098: if ($env{'request.state'} eq 'construct') {
1099: $Apache::lonxml::counter=1;
1100: $Apache::lonxml::counter_changed=1;
1101: } elsif (defined($env{'form.counter'})) {
1102: $Apache::lonxml::counter=$env{'form.counter'};
1103: $Apache::lonxml::counter_changed=0;
1104: } else {
1105: $Apache::lonxml::counter=1;
1106: $Apache::lonxml::counter_changed=1;
1107: }
1108: }
1109:
1110: sub store_counter {
1111: &Apache::lonnet::appenv({'form.counter' => $Apache::lonxml::counter});
1112: $Apache::lonxml::counter_changed=0;
1113: return '';
1114: }
1115:
1116: {
1117: my $state;
1118: sub clear_problem_counter {
1119: undef($state);
1120: &Apache::lonnet::delenv('form.counter');
1121: &Apache::lonxml::init_counter();
1122: &Apache::lonxml::store_counter();
1123: }
1124:
1125: sub remember_problem_counter {
1126: &Apache::lonnet::transfer_profile_to_env(undef,undef,1);
1127: $state = $env{'form.counter'};
1128: }
1129:
1130: sub restore_problem_counter {
1131: if (defined($state)) {
1132: &Apache::lonnet::appenv({'form.counter' => $state});
1133: }
1134: }
1135: sub get_problem_counter {
1136: if ($Apache::lonxml::counter_changed) { &store_counter() }
1137: &Apache::lonnet::transfer_profile_to_env(undef,undef,1);
1138: return $env{'form.counter'};
1139: }
1140: }
1141:
1142: =pod
1143:
1144: =item bubble_lines_for_part(part_response)
1145:
1146: Returns the number of lines required to get a response for
1147: $part_response (this is just $Apache::lonxml::counters_per_part{$part_response}
1148:
1149: =cut
1150:
1151: sub bubble_lines_for_part {
1152: my ($part_response) = @_;
1153:
1154: if (!defined($Apache::lonxml::counters_per_part{$part_response})) {
1155: return 0;
1156: } else {
1157: return $Apache::lonxml::counters_per_part{$part_response};
1158: }
1159: }
1160:
1161: =pod
1162:
1163: =item clear_bubble_lines_for_part
1164:
1165: Clears the hash of bubble lines per part. If a caller
1166: needs to analyze several resources this should be called between
1167: resources to reset the hash for each problem being analyzed.
1168:
1169: =cut
1170:
1171: sub clear_bubble_lines_for_part {
1172: undef(%Apache::lonxml::counters_per_part);
1173: }
1174:
1175: =pod
1176:
1177: =item set_bubble_lines(part_response, value)
1178:
1179: If there is a problem part, that for whatever reason
1180: requires bubble lines that are not
1181: the same as the counter increment, it can call this sub during
1182: analysis to set its hash value explicitly.
1183:
1184: =cut
1185:
1186: sub set_bubble_lines {
1187: my ($part_response, $value) = @_;
1188:
1189: $Apache::lonxml::counters_per_part{$part_response} = $value;
1190: }
1191:
1192: =pod
1193:
1194: =item get_bubble_line_hash
1195:
1196: Returns the current bubble line hash. This is assumed to
1197: be small so we return a copy
1198:
1199:
1200: =cut
1201:
1202: sub get_bubble_line_hash {
1203: return %Apache::lonxml::counters_per_part;
1204: }
1205:
1206:
1207: #--------------------------------------------------
1208:
1209: sub get_all_text {
1210: my($tag,$pars,$style)= @_;
1211: my $gotfullstack=1;
1212: if (ref($pars) ne 'ARRAY') {
1213: $gotfullstack=0;
1214: $pars=[$pars];
1215: }
1216: if (ref($style) ne 'HASH') {
1217: $style={};
1218: }
1219: my $depth=0;
1220: my $token;
1221: my $result='';
1222: if ( $tag =~ m:^/: ) {
1223: my $tag=substr($tag,1);
1224: #&Apache::lonxml::debug("have:$tag:");
1225: my $top_empty=0;
1226: while (($depth >=0) && ($#$pars > -1) && (!$top_empty)) {
1227: while (($depth >=0) && ($token = $$pars[-1]->get_token)) {
1228: #&Apache::lonxml::debug("e token:$token->[0]:$depth:$token->[1]:".$#$pars.":".$#Apache::lonxml::pwd);
1229: if (($token->[0] eq 'T')||($token->[0] eq 'C')||($token->[0] eq 'D')) {
1230: if ($token->[2]) {
1231: $result.='<![CDATA['.$token->[1].']]>';
1232: } else {
1233: $result.=$token->[1];
1234: }
1235: } elsif ($token->[0] eq 'PI') {
1236: $result.=$token->[2];
1237: } elsif ($token->[0] eq 'S') {
1238: if ($token->[1] =~ /^\Q$tag\E$/i) { $depth++; }
1239: if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_ON$/) { $Apache::lonxml::usestyle=1; }
1240: if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_OFF$/) { $Apache::lonxml::usestyle=0; }
1241: $result.=$token->[4];
1242: } elsif ($token->[0] eq 'E') {
1243: if ( $token->[1] =~ /^\Q$tag\E$/i) { $depth--; }
1244: #skip sending back the last end tag
1245: if ($depth == 0 && exists($$style{'/'.$token->[1]}) && $Apache::lonxml::usestyle) {
1246: my $string=
1247: '<LONCAPA_INTERNAL_TURN_STYLE_OFF end="yes" />'.
1248: $$style{'/'.$token->[1]}.
1249: $token->[2].
1250: '<LONCAPA_INTERNAL_TURN_STYLE_ON />';
1251: &Apache::lonxml::newparser($pars,\$string);
1252: #&Apache::lonxml::debug("reParsing $string");
1253: next;
1254: }
1255: if ($depth > -1) {
1256: $result.=$token->[2];
1257: } else {
1258: $$pars[-1]->unget_token($token);
1259: }
1260: }
1261: }
1262: if (($depth >=0) && ($#$pars == 0) ) { $top_empty=1; }
1263: if (($depth >=0) && ($#$pars > 0) ) {
1264: pop(@$pars);
1265: pop(@Apache::lonxml::pwd);
1266: }
1267: }
1268: if ($top_empty && $depth >= 0) {
1269: #never found the end tag ran out of text, throw error send back blank
1270: &error('Never found end tag for <'.$tag.
1271: '> current string <pre>'.
1272: &HTML::Entities::encode($result,'<>&"').
1273: '</pre>');
1274: if ($gotfullstack) {
1275: my $newstring='</'.$tag.'>'.$result;
1276: &Apache::lonxml::newparser($pars,\$newstring);
1277: }
1278: $result='';
1279: }
1280: } else {
1281: while ($#$pars > -1) {
1282: while ($token = $$pars[-1]->get_token) {
1283: #&Apache::lonxml::debug("s token:$token->[0]:$depth:$token->[1]");
1284: if (($token->[0] eq 'T')||($token->[0] eq 'C')||
1285: ($token->[0] eq 'D')) {
1286: if ($token->[2]) {
1287: $result.='<![CDATA['.$token->[1].']]>';
1288: } else {
1289: $result.=$token->[1];
1290: }
1291: } elsif ($token->[0] eq 'PI') {
1292: $result.=$token->[2];
1293: } elsif ($token->[0] eq 'S') {
1294: if ( $token->[1] =~ /^\Q$tag\E$/i) {
1295: $$pars[-1]->unget_token($token); last;
1296: } else {
1297: $result.=$token->[4];
1298: }
1299: if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_ON$/) { $Apache::lonxml::usestyle=1; }
1300: if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_OFF$/) { $Apache::lonxml::usestyle=0; }
1301: } elsif ($token->[0] eq 'E') {
1302: $result.=$token->[2];
1303: }
1304: }
1305: if (($#$pars > 0) ) {
1306: pop(@$pars);
1307: pop(@Apache::lonxml::pwd);
1308: } else { last; }
1309: }
1310: }
1311: #&Apache::lonxml::debug("Exit:$result:");
1312: return $result
1313: }
1314:
1315: sub newparser {
1316: my ($parser,$contentref,$dir) = @_;
1317: push (@$parser,HTML::LCParser->new($contentref));
1318: $$parser[-1]->xml_mode(1);
1319: $$parser[-1]->marked_sections(1);
1320: if ( $dir eq '' ) {
1321: push (@Apache::lonxml::pwd, $Apache::lonxml::pwd[$#Apache::lonxml::pwd]);
1322: } else {
1323: push (@Apache::lonxml::pwd, $dir);
1324: }
1325: }
1326:
1327: sub parstring {
1328: my ($token) = @_;
1329: my (@vars,@values);
1330: foreach my $attr (@{$token->[3]}) {
1331: if ($attr!~/\W/) {
1332: my $val=$token->[2]->{$attr};
1333: $val =~ s/([\%\@\\\"\'])/\\$1/g;
1334: $val =~ s/(\$[^\{a-zA-Z_])/\\$1/g;
1335: $val =~ s/(\$)$/\\$1/;
1336: #if ($val =~ m/^[\%\@]/) { $val="\\".$val; }
1337: push(@vars,"\$$attr");
1338: push(@values,"\"$val\"");
1339: }
1340: }
1341: my $var_init =
1342: (@vars) ? 'my ('.join(',',@vars).') = ('.join(',',@values).');'
1343: : '';
1344: return $var_init;
1345: }
1346:
1347: sub extlink {
1348: my ($res,$exact)=@_;
1349: if (!$exact) {
1350: $res=&Apache::lonnet::hreflocation($Apache::lonxml::pwd[-1],$res);
1351: }
1352: push(@Apache::lonxml::extlinks,$res);
1353: }
1354:
1355: sub writeallows {
1356: unless ($#extlinks>=0) { return; }
1357: my $thisurl = &Apache::lonnet::clutter(shift);
1358: if ($env{'httpref.'.$thisurl}) {
1359: $thisurl=$env{'httpref.'.$thisurl};
1360: }
1361: my $thisdir=$thisurl;
1362: $thisdir=~s/\/[^\/]+$//;
1363: my %httpref=();
1364: foreach (@extlinks) {
1365: $httpref{'httpref.'.
1366: &Apache::lonnet::hreflocation($thisdir,&unescape($_))}=$thisurl;
1367: }
1368: @extlinks=();
1369: &Apache::lonnet::appenv(\%httpref);
1370: }
1371:
1372: sub register_ssi {
1373: my ($url,%form)=@_;
1374: push (@Apache::lonxml::ssi_info,{'url'=>$url,'form'=>\%form});
1375: return '';
1376: }
1377:
1378: sub do_registered_ssi {
1379: foreach my $info (@Apache::lonxml::ssi_info) {
1380: my %form=%{ $info->{'form'}};
1381: my $url=$info->{'url'};
1382: &Apache::lonnet::ssi($url,%form);
1383: }
1384: }
1385:
1386: sub add_script_result {
1387: my ($display) = @_;
1388: if ($display ne '') {
1389: push(@script_var_displays, $display);
1390: }
1391: }
1392:
1393: #
1394: # Afterburner handles anchors, highlights and links
1395: #
1396: sub afterburn {
1397: my $result=shift;
1398: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
1399: ['highlight','anchor','link']);
1400: if ($env{'form.highlight'}) {
1401: foreach (split(/\,/,$env{'form.highlight'})) {
1402: my $anchorname=$_;
1403: my $matchthis=$anchorname;
1404: $matchthis=~s/\_+/\\s\+/g;
1405: $result=~s/(\Q$matchthis\E)/\<font color=\"red\"\>$1\<\/font\>/gs;
1406: }
1407: }
1408: if ($env{'form.link'}) {
1409: foreach (split(/\,/,$env{'form.link'})) {
1410: my ($anchorname,$linkurl)=split(/\>/,$_);
1411: my $matchthis=$anchorname;
1412: $matchthis=~s/\_+/\\s\+/g;
1413: $result=~s/(\Q$matchthis\E)/\<a href=\"$linkurl\"\>$1\<\/a\>/gs;
1414: }
1415: }
1416: if ($env{'form.anchor'}) {
1417: my $anchorname=$env{'form.anchor'};
1418: my $matchthis=$anchorname;
1419: $matchthis=~s/\_+/\\s\+/g;
1420: $result=~s/(\Q$matchthis\E)/\<a name=\"$anchorname\"\>$1\<\/a\>/s;
1421: $result.=(<<"ENDSCRIPT");
1422: <script type="text/javascript">
1423: document.location.hash='$anchorname';
1424: </script>
1425: ENDSCRIPT
1426: }
1427: return $result;
1428: }
1429:
1430: sub storefile {
1431: my ($file,$contents)=@_;
1432: &Apache::lonnet::correct_line_ends(\$contents);
1433: if (my $fh=Apache::File->new('>'.$file)) {
1434: print $fh $contents;
1435: $fh->close();
1436: return 1;
1437: } else {
1438: &warning(&mt('Unable to save file [_1]','<tt>'.$file.'</tt>'));
1439: return 0;
1440: }
1441: }
1442:
1443: sub createnewhtml {
1444: my $title=&mt('Title of document goes here');
1445: my $body=&mt('Body of document goes here');
1446: my $filecontents=(<<SIMPLECONTENT);
1447: <html>
1448: <head>
1449: <title>$title</title>
1450: </head>
1451: <body bgcolor="#FFFFFF">
1452: $body
1453: </body>
1454: </html>
1455: SIMPLECONTENT
1456: return $filecontents;
1457: }
1458:
1459: sub createnewsty {
1460: my $filecontents=(<<SIMPLECONTENT);
1461: <definetag name="">
1462: <render>
1463: <web></web>
1464: <tex></tex>
1465: </render>
1466: </definetag>
1467: SIMPLECONTENT
1468: return $filecontents;
1469: }
1470:
1471: sub createnewjs {
1472: my $filecontents=(<<SIMPLECONTENT);
1473: <script type="text/javascript" language="Javascript">
1474:
1475: </script>
1476: SIMPLECONTENT
1477: return $filecontents;
1478: }
1479:
1480: sub verify_html {
1481: my ($filecontents)=@_;
1482: my ($is_html,$is_xml,$is_physnet);
1483: if ($filecontents =~/(?:\<|\<\;)\?xml[^\<]*\?(?:\>|\>\;)/is) {
1484: $is_xml = 1;
1485: } elsif ($filecontents =~/(?:\<|\<\;)html(?:\s+[^\<]+|\s*)(?:\>|\>\;)/is) {
1486: $is_html = 1;
1487: } elsif ($filecontents =~/(?:\<|\<\;)physnet[^\<]*(?:\>|\>\;)/is) {
1488: $is_physnet = 1;
1489: }
1490: unless ($is_xml || $is_html || $is_physnet) {
1491: return &mt('File does not have [_1] or [_2] starting tag','<html>','<?xml ?>');
1492: }
1493: if ($is_html) {
1494: if ($filecontents!~/(?:\<|\<\;)\/html(?:\>|\>\;)/is) {
1495: return &mt('File does not have [_1] ending tag','<html>');
1496: }
1497: if ($filecontents!~/(?:\<|\<\;)(?:body|frameset)[^\<]*(?:\>|\>\;)/is) {
1498: return &mt('File does not have [_1] or [_2] starting tag','<body>','<frameset>');
1499: }
1500: if ($filecontents!~/(?:\<|\<\;)\/(?:body|frameset)[^\<]*(?:\>|\>\;)/is) {
1501: return &mt('File does not have [_1] or [_2] ending tag','<body>','<frameset>');
1502: }
1503: }
1504: return '';
1505: }
1506:
1507: sub renderingoptions {
1508: my %langchoices=('' => '');
1509: foreach (&Apache::loncommon::languageids()) {
1510: if (&Apache::loncommon::supportedlanguagecode($_)) {
1511: $langchoices{&Apache::loncommon::supportedlanguagecode($_)}
1512: = &Apache::loncommon::plainlanguagedescription($_);
1513: }
1514: }
1515: my $output;
1516: unless ($env{'form.forceedit'}) {
1517: $output .=
1518: '<span class="LC_nobreak">'.
1519: &mt('Language:').' '.
1520: &Apache::loncommon::select_form(
1521: $env{'form.languages'},
1522: 'languages',
1523: {&Apache::lonlocal::texthash(%langchoices)}).
1524: '</span>';
1525: }
1526: $output .=
1527: ' <span class="LC_nobreak">'.
1528: &mt('Math Rendering:').' '.
1529: &Apache::loncommon::select_form(
1530: $env{'form.texengine'},
1531: 'texengine',
1532: {&Apache::lonlocal::texthash
1533: ('' => '',
1534: 'tth' => 'tth (TeX to HTML)',
1535: 'MathJax' => 'MathJax',
1536: 'mimetex' => 'mimetex (Convert to Images)')}).
1537: '</span>';
1538: return $output;
1539: }
1540:
1541: sub inserteditinfo {
1542: my ($filecontents,$filetype,$filename,$symb,$itemtitle,$folderpath,$uri,$action) = @_;
1543: $filecontents = &HTML::Entities::encode($filecontents,'<>&"');
1544: my $xml_help = '';
1545: my $initialize='';
1546: my $textarea_id = 'filecont';
1547: my ($dragmath_button,$deps_button,$context,$cnum,$cdom,$add_to_onload,
1548: $add_to_onresize,$init_dragmath);
1549: $initialize=&Apache::lonhtmlcommon::spellheader();
1550: if ($filetype eq 'html') {
1551: if ($env{'request.course.id'}) {
1552: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
1553: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
1554: if ($uri =~ m{^\Q/uploaded/$cdom/$cnum/portfolio/syllabus/\E}) {
1555: $context = 'syllabus';
1556: }
1557: }
1558: if (&Apache::lonhtmlcommon::htmlareabrowser()) {
1559: my $lang = &Apache::lonhtmlcommon::htmlarea_lang();
1560: my %textarea_args = (
1561: fullpage => 'true',
1562: dragmath => 'math',
1563: );
1564: $initialize .= &Apache::lonhtmlcommon::htmlareaselectactive(\%textarea_args);
1565: if ($context eq 'syllabus') {
1566: $init_dragmath = "editmath_visibility('filecont','none')";
1567: }
1568: }
1569: }
1570: $initialize .= (<<FULLPAGE);
1571: <script type="text/javascript">
1572: // <![CDATA[
1573: function initDocument() {
1574: resize_textarea('$textarea_id','LC_aftertextarea');
1575: $init_dragmath
1576: }
1577: // ]]>
1578: </script>
1579: FULLPAGE
1580: my $textareaclass;
1581: if ($filetype eq 'html') {
1582: if ($context eq 'syllabus') {
1583: $deps_button = &Apache::lonhtmlcommon::dependencies_button()."\n";
1584: $initialize .=
1585: &Apache::lonhtmlcommon::dependencycheck_js(undef,&mt('Syllabus'),
1586: $uri,undef,
1587: "/public/$cdom/$cnum/syllabus").
1588: "\n";
1589: if (&Apache::lonhtmlcommon::htmlareabrowser()) {
1590: $textareaclass = 'class="LC_richDefaultOn"';
1591: }
1592: } elsif ($symb || $folderpath) {
1593: $deps_button = &Apache::lonhtmlcommon::dependencies_button()."\n";
1594: $initialize .=
1595: &Apache::lonhtmlcommon::dependencycheck_js($symb,$itemtitle,
1596: undef,$folderpath,$uri)."\n";
1597: }
1598: $dragmath_button = '<span id="math_filecont">'.&Apache::lonhtmlcommon::dragmath_button('filecont',1).'</span>';
1599: $initialize .= "\n".&Apache::lonhtmlcommon::dragmath_js('EditMathPopup');
1600: }
1601: $add_to_onload = 'initDocument();';
1602: $add_to_onresize = "resize_textarea('$textarea_id','LC_aftertextarea');";
1603:
1604: if ($filetype eq 'html') {
1605: my $not_author;
1606: if ($uri =~ m{^/uploaded/}) {
1607: $not_author = 1;
1608: }
1609: $xml_help=&Apache::loncommon::helpLatexCheatsheet(undef,undef,$not_author);
1610: }
1611:
1612: my $titledisplay=&display_title();
1613: my %lt=&Apache::lonlocal::texthash('st' => 'Save and Edit',
1614: 'vi' => 'Save and View',
1615: 'dv' => 'Discard Edits and View',
1616: 'un' => 'Undo',
1617: 'ed' => 'Edit',
1618: 'ew' => 'Edit with Daxe');
1619: my $spelllink = &Apache::lonhtmlcommon::spelllink('xmledit','filecont');
1620: my $textarea_events = &Apache::edit::element_change_detection();
1621: my $form_events = &Apache::edit::form_change_detection();
1622: my $htmlerror;
1623: if ($filetype eq 'html') {
1624: $htmlerror=&verify_html($filecontents);
1625: if ($htmlerror) {
1626: $htmlerror=(' 'x3).' <span class="LC_error">'.$htmlerror.'</span>';
1627: }
1628: if (&Apache::lonhtmlcommon::htmlareabrowser()) {
1629: unless ($textareaclass) {
1630: $textareaclass = 'class="LC_richDefaultOff"';
1631: }
1632: }
1633: }
1634: my ($undo,$daxebutton,%onclick);
1635: foreach my $item ('discard','undo','daxe') {
1636: $onclick{$item} = 'onclick="still_ask=true;setmode(this.form,'."'$item'".')"';
1637: }
1638: foreach my $item ('saveedit','saveview') {
1639: $onclick{$item} = 'onclick="is_submit=true;setmode(this.form,'."'$item'".')"';
1640: }
1641: unless ($uri =~ m{^/uploaded/}) {
1642: $undo = '<input type="button" name="Undo" accesskey="u" value="'.$lt{'un'}.'" '.
1643: $onclick{'undo'}.' />'."\n";
1644: }
1645: $initialize .= &setmode_javascript();
1646: if ($filetype eq 'html') {
1647: my %editors = &Apache::loncommon::permitted_editors();
1648: if ($editors{'daxe'}) {
1649: $daxebutton = '<input type="button" name="editwithdaxe" accesskey="w" value="'.$lt{'ew'}.'" '.
1650: $onclick{'daxe'}.' />'."\n";
1651: }
1652: }
1653: my $editfooter=(<<ENDFOOTER);
1654: $initialize
1655: <a name="editsection" />
1656: <form $form_events method="post" name="xmledit" action="$action">
1657: <input type="hidden" name="problemmode" value="edit" />
1658: <div class="LC_edit_problem_editxml_header">
1659: <table class="LC_edit_problem_header_title"><tr><td>
1660: $filename
1661: </td><td align="right">
1662: $xml_help
1663: </td></tr>
1664: </table>
1665: <div style="float:right">
1666: <input type="button" name="savethisfile" accesskey="s" value="$lt{'st'}" $onclick{'saveedit'} />
1667: <input type="button" name="viewmode" accesskey="v" value="$lt{'vi'}" $onclick{'saveview'} />
1668: </div>
1669: <div>
1670: <input type="button" name="discardview" accesskey="d" value="$lt{'dv'}" $onclick{'discard'} />
1671: $undo $deps_button $daxebutton $dragmath_button $htmlerror
1672: </div>
1673: </div>
1674: <textarea $textarea_events style="width:100%" cols="80" rows="44" name="filecont" id="filecont" $textareaclass>$filecontents</textarea><br />$spelllink
1675: <div id="LC_aftertextarea">
1676: <br />
1677: $titledisplay
1678: </div>
1679: </form>
1680: ENDFOOTER
1681: return ($editfooter,$add_to_onload,$add_to_onresize);
1682: }
1683:
1684: sub setmode_javascript {
1685: return <<"ENDSCRIPT";
1686: <script type="text/javascript">
1687: // <![CDATA[
1688: function setmode(form,probmode) {
1689: if (probmode == 'daxe') {
1690: var url = new URL(document.location.href);
1691: window.location = url.protocol+'//'+url.hostname+'/daxepage'+url.pathname;
1692: } else {
1693: var initial = form.problemmode.value;
1694: form.problemmode.value = probmode;
1695: form.submit();
1696: form.problemmode.value = initial;
1697: }
1698: }
1699: // ]]>
1700: </script>
1701: ENDSCRIPT
1702: }
1703:
1704: sub seteditor_javascript {
1705: my ($is_course_doc,$is_supp,$supp_path,$supp_title) = @_;
1706: my $symb;
1707: if ($is_course_doc) {
1708: if (!$is_supp) {
1709: ($symb) = &Apache::lonnet::whichuser();
1710: if ($symb) {
1711: $symb = &escape($symb);
1712: }
1713: }
1714: }
1715: return <<"ENDSCRIPT";
1716: <script type="text/javascript">
1717: // <![CDATA[
1718: function seteditmode(form,editor) {
1719: var querystr = '';
1720: var supplemental = '$is_supp';
1721: var coursedoc = '$is_course_doc';
1722: if (coursedoc) {
1723: if (supplemental) {
1724: var supppath = '$supp_path';
1725: var supptitle = '$supp_title';
1726: if (supppath) {
1727: querystr = 'folderpath='+supppath;
1728: }
1729: if (supptitle) {
1730: if (querystr) {
1731: querystr += '&';
1732: }
1733: querystr += 'title='+supptitle;
1734: }
1735: }
1736: }
1737: if (editor == 'daxe') {
1738: var url = new URL(document.location.href);
1739: var newloc = url.protocol+'//'+url.hostname+'/daxepage'+url.pathname;
1740: if (querystr) {
1741: if (/\\?/.test(url.pathname)) {
1742: newloc += '&';
1743: } else {
1744: newloc += '?';
1745: }
1746: newloc += querystr;
1747: }
1748: window.location = newloc;
1749: } else {
1750: if (coursedoc) {
1751: var curraction = form.action;
1752: var idx = curraction.indexOf('?');
1753: if (idx !== -1) {
1754: form.action = curraction.substring(0,idx);
1755: }
1756: form.action += '?forceedit=1®ister=1';
1757: if (querystr) {
1758: form.action += '&'+querystr;
1759: }
1760: }
1761: if (editor == 'edit') {
1762: form.editmode.value = editor;
1763: } else {
1764: form.editmode.value = '';
1765: }
1766: form.submit();
1767: }
1768: }
1769: // ]]>
1770: </script>
1771: ENDSCRIPT
1772: }
1773:
1774: sub get_target {
1775: my $viewgrades=&Apache::lonnet::allowed('vgr',$env{'request.course.id'});
1776: if ( $env{'request.state'} eq 'published') {
1777: if ( defined($env{'form.grade_target'})
1778: && ($viewgrades == 'F' )) {
1779: return ($env{'form.grade_target'});
1780: } elsif (defined($env{'form.grade_target'})) {
1781: if (($env{'form.grade_target'} eq 'web') ||
1782: ($env{'form.grade_target'} eq 'tex') ) {
1783: return $env{'form.grade_target'}
1784: } else {
1785: return 'web';
1786: }
1787: } else {
1788: return 'web';
1789: }
1790: } elsif ($env{'request.state'} eq 'construct') {
1791: if ( defined($env{'form.grade_target'})) {
1792: return ($env{'form.grade_target'});
1793: } else {
1794: return 'web';
1795: }
1796: } else {
1797: return 'web';
1798: }
1799: }
1800:
1801: sub handler {
1802: my $request=shift;
1803:
1804: my $target=&get_target();
1805: $Apache::lonxml::debug=$env{'user.debug'};
1806:
1807: &Apache::loncommon::content_type($request,'text/html');
1808: &Apache::loncommon::no_cache($request);
1809: if ($env{'request.state'} eq 'published') {
1810: $request->set_last_modified(&Apache::lonnet::metadata($request->uri,
1811: 'lastrevisiondate'));
1812: }
1813: # Embedded Flash movies from Camtasia served from https will not display in IE
1814: # if XML config file has expired from cache.
1815: if ($ENV{'SERVER_PORT'} == 443) {
1816: if ($request->uri =~ /\.xml$/) {
1817: my ($httpbrowser,$clientbrowser) =
1818: &Apache::loncommon::decode_user_agent($request);
1819: if ($clientbrowser =~ /^explorer$/i) {
1820: delete $request->headers_out->{'Cache-control'};
1821: delete $request->headers_out->{'Pragma'};
1822: my $expiration = time + 60;
1823: my $date=strftime("%a, %d %b %Y %H:%M:%S GMT",gmtime($expiration));
1824: $request->headers_out->set("Expires" => $date);
1825: }
1826: }
1827: }
1828: $request->send_http_header;
1829:
1830: return OK if $request->header_only;
1831:
1832:
1833: my $file=&Apache::lonnet::filelocation("",$request->uri);
1834: my ($filetype,$breadcrumbtext);
1835: if ($file =~ /\.(sty|css|js|txt|tex)$/) {
1836: $filetype=$1;
1837: } else {
1838: $filetype='html';
1839: }
1840: unless ($env{'request.uri'}) {
1841: $env{'request.uri'}=$request->uri;
1842: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
1843: ['todocs']);
1844: }
1845: my ($cdom,$cnum);
1846: if ($env{'request.course.id'}) {
1847: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
1848: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
1849: if ($filetype eq 'html') {
1850: if ($request->uri =~ m{^\Q/uploaded/$cdom/$cnum/portfolio/syllabus/\E.+$}) {
1851: if (&Apache::lonnet::allowed('mdc',$env{'request.course.id'})) {
1852: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
1853: ['editmode']);
1854: }
1855: }
1856: }
1857: }
1858: if ($filetype eq 'sty') {
1859: $breadcrumbtext = 'Style File Editor';
1860: } elsif ($filetype eq 'js') {
1861: $breadcrumbtext = 'Javascript Editor';
1862: } elsif ($filetype eq 'css') {
1863: $breadcrumbtext = 'CSS Editor';
1864: } elsif ($filetype eq 'txt') {
1865: $breadcrumbtext = 'Text Editor';
1866: } elsif ($filetype eq 'tex') {
1867: $breadcrumbtext = 'TeX Editor';
1868: } else {
1869: $breadcrumbtext = 'HTML Editor';
1870: }
1871:
1872: #
1873: # Edit action? Save file.
1874: #
1875: if (!($env{'request.state'} eq 'published')) {
1876: if (($env{'form.problemmode'} eq 'saveedit') ||
1877: ($env{'form.problemmode'} eq 'saveview') ||
1878: ($env{'form.problemmode'} eq 'undo')) {
1879: my $html_file=&Apache::lonnet::getfile($file);
1880: my $error = &Apache::lonhomework::handle_save_or_undo($request, \$html_file, \$env{'form.filecont'});
1881: if ($env{'form.problemmode'} eq 'saveedit') {
1882: $env{'form.editmode'}='edit'; #force edit mode
1883: }
1884: }
1885: }
1886: my $inhibit_menu;
1887: my %mystyle;
1888: my $result = '';
1889: my $filecontents=&Apache::lonnet::getfile($file);
1890: if ($filecontents eq -1) {
1891: my $start_page=&Apache::loncommon::start_page('File Error');
1892: my $end_page=&Apache::loncommon::end_page();
1893: my $errormsg='<p class="LC_error">'
1894: .&mt('File not found: [_1]'
1895: ,'<span class="LC_filename">'.$file.'</span>')
1896: .'</p>';
1897: $result=(<<ENDNOTFOUND);
1898: $start_page
1899: $errormsg
1900: $end_page
1901: ENDNOTFOUND
1902: $filecontents='';
1903: if ($env{'request.state'} ne 'published') {
1904: if ($filetype eq 'sty') {
1905: $filecontents=&createnewsty();
1906: } elsif ($filetype eq 'js') {
1907: $filecontents=&createnewjs();
1908: } elsif ($filetype ne 'css' && $filetype ne 'txt' && $filetype ne 'tex') {
1909: $filecontents=&createnewhtml();
1910: }
1911: $env{'form.editmode'}='edit'; #force edit mode
1912: }
1913: } else {
1914: unless ($env{'request.state'} eq 'published') {
1915: if ($filecontents=~/BEGIN LON-CAPA Internal/) {
1916: &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.'));
1917: }
1918: #
1919: # we are in construction space, see if edit mode forced
1920: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
1921: ['editmode']);
1922: }
1923: if ((!$env{'form.editmode'}) ||
1924: ($env{'form.problemmode'} eq 'saveview') ||
1925: ($env{'form.problemmode'} eq 'discard')) {
1926: if ($filetype eq 'html' || $filetype eq 'sty') {
1927: &Apache::structuretags::reset_problem_globals();
1928: $result = &Apache::lonxml::xmlparse($request,$target,
1929: $filecontents,'',%mystyle);
1930: # .html files may contain <problem> or <Task> need to clean
1931: # up if it did
1932: &Apache::structuretags::reset_problem_globals();
1933: &Apache::lonhomework::finished_parsing();
1934: } elsif ($filetype eq 'tex') {
1935: $result = &Apache::lontexconvert::converted(\$filecontents,
1936: $env{'form.texengine'});
1937: if ($env{'form.return_only_error_and_warning_counts'}) {
1938: $result = "$errorcount:$warningcount";
1939: }
1940: } else {
1941: $result = $filecontents;
1942: }
1943: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
1944: ['rawmode']);
1945: if ($env{'form.rawmode'}) { $result = $filecontents; }
1946: if (($env{'request.state'} eq 'construct') &&
1947: (($filetype eq 'css') || ($filetype eq 'js')) && ($ENV{'HTTP_REFERER'})) {
1948: if ($ENV{'HTTP_REFERER'} =~ m{^https?\://[^\/]+/priv/$LONCAPA::match_domain/$LONCAPA::match_username/[^\?]+\.(x?html?|swf)(|\?)[^\?]*$}) {
1949: $inhibit_menu = 1;
1950: }
1951: }
1952: if (($filetype ne 'html') &&
1953: (!$env{'form.return_only_error_and_warning_counts'}) &&
1954: (!$inhibit_menu)) {
1955: my $nochgview = 1;
1956: my $controls = '';
1957: if ($env{'request.state'} eq 'construct') {
1958: $controls = &Apache::loncommon::head_subbox(
1959: &Apache::loncommon::CSTR_pageheader()
1960: .&Apache::londefdef::edit_controls($nochgview));
1961: }
1962: if ($filetype ne 'sty' && $filetype ne 'tex') {
1963: $result =~ s/</</g;
1964: $result =~ s/>/>/g;
1965: $result = '<table class="LC_sty_begin">'.
1966: '<tr><td><b><pre>'.$result.
1967: '</pre></b></td></tr></table>';
1968: }
1969: my $brcrum;
1970: if ($env{'request.state'} eq 'construct') {
1971: my $text = 'Authoring Space';
1972: my $href = &Apache::loncommon::authorspace($request->uri);
1973: if ($env{'request.course.id'}) {
1974: my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
1975: my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
1976: if ($href eq "/priv/$cdom/$cnum/") {
1977: $text = 'Course Authoring Space';
1978: }
1979: }
1980: $brcrum = [{'href' => $href,
1981: 'text' => $text,},
1982: {'href' => '',
1983: 'text' => $breadcrumbtext}];
1984: } else {
1985: $brcrum = ''; # FIXME: Where are we?
1986: }
1987: my %options = ('bread_crumbs' => $brcrum,
1988: 'bgcolor' => '#FFFFFF');
1989: $result =
1990: &Apache::loncommon::start_page(undef,undef,\%options)
1991: .$controls
1992: .$result
1993: .&Apache::loncommon::end_page();
1994: }
1995: }
1996: }
1997:
1998: #
1999: # Edit action? Insert editing commands
2000: #
2001: unless (($env{'request.state'} eq 'published') || ($inhibit_menu)) {
2002: if (($env{'form.editmode'}) &&
2003: (!($env{'form.problemmode'} eq 'saveview')) &&
2004: (!($env{'form.problemmode'} eq 'discard'))) {
2005: my ($displayfile,$url,$symb,$itemtitle,$action);
2006: $displayfile=$request->uri;
2007: if ($request->uri =~ m{^/uploaded/}) {
2008: if ($env{'request.course.id'}) {
2009: if ($request->uri =~ m{^\Q/uploaded/$cdom/$cnum/\E(docs|supplemental)/}) {
2010: if ($1 eq 'supplemental') {
2011: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
2012: ['folderpath','title']);
2013: }
2014: if (($env{'request.state'} eq 'edit') && ($env{'form.editmode'} eq 'edit') &&
2015: ($filetype eq 'html')) {
2016: &Apache::lonhtmlcommon::clear_breadcrumbs();
2017: }
2018: } elsif ($request->uri =~ m{^\Q/uploaded/$cdom/$cnum/portfolio/syllabus/\E(.+)$}) {
2019: my $filename = $1;
2020: if ($1 eq 'loncapa.html') {
2021: $displayfile = &mt('Syllabus (minimal template)');
2022: $action = $request->uri.'?forceedit=1';
2023: } else {
2024: $displayfile = &mt('Syllabus file: [_1]',$1);
2025: }
2026: $itemtitle = &mt('Syllabus');
2027: }
2028: }
2029: unless ($itemtitle) {
2030: ($symb,$itemtitle,$displayfile) =
2031: &get_courseupload_hierarchy($request->uri,
2032: $env{'form.folderpath'},
2033: $env{'form.title'});
2034: }
2035: } else {
2036: $displayfile=~s/^\/[^\/]*//;
2037: }
2038:
2039: my ($edit_info, $add_to_onload, $add_to_onresize)=
2040: &inserteditinfo($filecontents,$filetype,$displayfile,$symb,
2041: $itemtitle,$env{'form.folderpath'},$request->uri,$action);
2042:
2043: my %options =
2044: ('add_entries' =>
2045: {'onresize' => $add_to_onresize,
2046: 'onload' => $add_to_onload, });
2047: my $header;
2048: if ($env{'request.state'} eq 'construct') {
2049: my $text = 'Authoring Space';
2050: my $href = &Apache::loncommon::authorspace($request->uri);
2051: if ($env{'request.course.id'}) {
2052: my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
2053: my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
2054: if ($href eq "/priv/$cdom/$cnum/") {
2055: $text = 'Course Authoring Space';
2056: }
2057: }
2058: $options{'bread_crumbs'} = [{
2059: 'href' => $href,
2060: 'text' => $text},
2061: {'href' => '',
2062: 'text' => $breadcrumbtext}];
2063: $header = &Apache::loncommon::head_subbox(
2064: &Apache::loncommon::CSTR_pageheader());
2065: }
2066: my $js =
2067: &Apache::edit::js_change_detection().
2068: &Apache::loncommon::resize_textarea_js();
2069: my $start_page = &Apache::loncommon::start_page(undef,$js,
2070: \%options);
2071: $result = $start_page
2072: .$header
2073: .&Apache::lonxml::message_location()
2074: .$edit_info
2075: .&Apache::loncommon::end_page();
2076: }
2077: }
2078: if ($filetype eq 'html') { &writeallows($request->uri); }
2079:
2080: &Apache::lonxml::add_messages(\$result);
2081: $request->print($result);
2082:
2083: return OK;
2084: }
2085:
2086: sub display_title {
2087: my $result;
2088: if ($env{'request.state'} eq 'construct') {
2089: my $title=&Apache::lonnet::gettitle();
2090: if (!defined($title) || $title eq '') {
2091: $title = $env{'request.filename'};
2092: $title = substr($title, rindex($title, '/') + 1);
2093: }
2094: $result = "<script type='text/javascript'>top.document.title = '$title - LON-CAPA "
2095: .&mt('Authoring Space')."';</script>";
2096: }
2097: return $result;
2098: }
2099:
2100: sub get_courseupload_hierarchy {
2101: my ($url,$folderpath,$title) = @_;
2102: my ($symb,$itemtitle,$displaypath);
2103: if ($env{'request.course.id'}) {
2104: if ($folderpath =~ /^supplemental/) {
2105: my @folders = split(/\&/,$folderpath);
2106: my @pathitems;
2107: while (@folders) {
2108: my $folder=shift(@folders);
2109: my $foldername=shift(@folders);
2110: $foldername =~ s/\:(\d*)\:(\w*)\:(\w*):(\d*)\:?(\d*)$//;
2111: push(@pathitems,&unescape($foldername));
2112: }
2113: if ($title) {
2114: push(@pathitems,&unescape($title));
2115: $itemtitle = $title;
2116: }
2117: $displaypath = join(' » ',@pathitems);
2118: } else {
2119: $symb = &Apache::lonnet::symbread($url);
2120: my ($map,$id,$res)=&Apache::lonnet::decode_symb($symb);
2121: my $navmap=Apache::lonnavmaps::navmap->new;
2122: if (ref($navmap)) {
2123: my $res = $navmap->getBySymb($symb);
2124: if (ref($res)) {
2125: my @pathitems =
2126: &Apache::loncommon::get_folder_hierarchy($navmap,$map,1);
2127: $itemtitle = $res->compTitle();
2128: push(@pathitems,$itemtitle);
2129: $displaypath = join(' » ',@pathitems);
2130: }
2131: }
2132: }
2133: }
2134: return ($symb,$itemtitle,$displaypath);
2135: }
2136:
2137: sub debug {
2138: if ($Apache::lonxml::debug eq "1") {
2139: $|=1;
2140: my $request=$Apache::lonxml::request;
2141: if (!$request) {
2142: eval { $request=Apache->request; };
2143: }
2144: if (!$request) {
2145: eval { $request=Apache2::RequestUtil->request; };
2146: }
2147: $request->print('<font size="-2"><pre>DEBUG:'.&HTML::Entities::encode($_[0],'<>&"')."</pre></font>\n");
2148: #&Apache::lonnet::logthis($_[0]);
2149: }
2150: }
2151:
2152: sub show_error_warn_msg {
2153: if (($env{'request.filename'} eq
2154: $Apache::lonnet::perlvar{'lonDocRoot'}.'/res/lib/templates/simpleproblem.problem') &&
2155: (&Apache::lonnet::allowed('mdc',$env{'request.course.id'}))) {
2156: return 1;
2157: }
2158: return (($Apache::lonxml::debug eq 1) ||
2159: ($env{'request.state'} eq 'construct') ||
2160: ($Apache::lonhomework::browse eq 'F'
2161: &&
2162: $env{'form.show_errors'} eq 'on'));
2163: }
2164:
2165: sub error {
2166: my @errors = @_;
2167:
2168: $errorcount++;
2169:
2170: $Apache::lonxml::internal_error=1;
2171:
2172: if (defined($Apache::inputtags::part)) {
2173: if ( @Apache::inputtags::response ) {
2174: push(@errors,
2175: &mt("This error occurred while processing response [_1] in part [_2]",
2176: $Apache::inputtags::response[-1],
2177: $Apache::inputtags::part));
2178: } else {
2179: push(@errors,
2180: &mt("This error occurred while processing part [_1]",
2181: $Apache::inputtags::part));
2182: }
2183: }
2184:
2185: if ( &show_error_warn_msg() ) {
2186: # If printing in construction space, put the error inside <pre></pre>
2187: push(@Apache::lonxml::error_messages,
2188: $Apache::lonxml::warnings_error_header
2189: .'<div class="LC_error">'
2190: .'<b>'.&mt('ERROR:').' </b>'.join("<br />\n",@errors)
2191: ."</div>\n");
2192: $Apache::lonxml::warnings_error_header='';
2193: } else {
2194: my $errormsg;
2195: my ($symb)=&Apache::lonnet::symbread();
2196: if ( !$symb ) {
2197: #public or browsers
2198: $errormsg=&mt("An error occurred while processing this resource. The author has been notified.");
2199: }
2200: my $host=$Apache::lonnet::perlvar{'lonHostID'};
2201: push(@errors,
2202: &mt("The error occurred on host [_1]",
2203: "<tt>$host</tt>"));
2204:
2205: my $msg = join('<br />', @errors);
2206:
2207: #notify author
2208: &Apache::lonmsg::author_res_msg($env{'request.filename'},$msg);
2209: #notify course
2210: if ( $symb && $env{'request.course.id'} ) {
2211: my $cnum=$env{'course.'.$env{'request.course.id'}.'.num'};
2212: my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
2213: my (undef,%users)=&Apache::lonmsg::decide_receiver(undef,0,1,1,1);
2214: my $declutter=&Apache::lonnet::declutter($env{'request.filename'});
2215: my $baseurl = &Apache::lonnet::clutter($declutter);
2216: my @userlist;
2217: foreach (keys(%users)) {
2218: my ($user,$domain) = split(/:/, $_);
2219: push(@userlist,"$user:$domain");
2220: my $key=$declutter.'_'.$user.'_'.$domain;
2221: my %lastnotified=&Apache::lonnet::get('nohist_xmlerrornotifications',
2222: [$key],
2223: $cdom,$cnum);
2224: my $now=time;
2225: if ($now-$lastnotified{$key}>86400) {
2226: my $title = &Apache::lonnet::gettitle($symb);
2227: my $sentmessage;
2228: &Apache::lonmsg::user_normal_msg($user,$domain,
2229: "Error [$title]",$msg,'',$baseurl,'','',
2230: \$sentmessage,$symb,$title,1);
2231: &Apache::lonnet::put('nohist_xmlerrornotifications',
2232: {$key => $now},
2233: $cdom,$cnum);
2234: }
2235: }
2236: if ($env{'request.role.adv'}) {
2237: $errormsg=&mt("An error occurred while processing this resource. The course personnel ([_1]) and the author have been notified.",join(', ',@userlist));
2238: } else {
2239: $errormsg=&mt("An error occurred while processing this resource. The instructor has been notified.");
2240: }
2241: }
2242: push(@Apache::lonxml::error_messages,"<span class=\"LC_warning\">$errormsg</span><br />");
2243: }
2244: }
2245:
2246: sub warning {
2247: $warningcount++;
2248:
2249: if ($env{'form.grade_target'} ne 'tex') {
2250: if ( &show_error_warn_msg() ) {
2251: push(@Apache::lonxml::warning_messages,
2252: $Apache::lonxml::warnings_error_header
2253: .'<div class="LC_warning">'
2254: .&mt('[_1]W[_2]ARNING','<b>','</b>')."<b>:</b> ".join('<br />',@_)
2255: ."</div>\n"
2256: );
2257: $Apache::lonxml::warnings_error_header='';
2258: }
2259: }
2260: }
2261:
2262: sub info {
2263: if ($env{'form.grade_target'} ne 'tex'
2264: && $env{'request.state'} eq 'construct') {
2265: push(@Apache::lonxml::info_messages,join('<br />',@_)."<br />\n");
2266: }
2267: }
2268:
2269: sub message_location {
2270: return '__LONCAPA_INTERNAL_MESSAGE_LOCATION__';
2271: }
2272:
2273: sub add_messages {
2274: my ($msg)=@_;
2275: my $result=join(' ',
2276: @Apache::lonxml::info_messages,
2277: @Apache::lonxml::error_messages,
2278: @Apache::lonxml::warning_messages);
2279: undef(@Apache::lonxml::info_messages);
2280: undef(@Apache::lonxml::error_messages);
2281: undef(@Apache::lonxml::warning_messages);
2282: $$msg=~s/__LONCAPA_INTERNAL_MESSAGE_LOCATION__/$result/;
2283: $$msg=~s/__LONCAPA_INTERNAL_MESSAGE_LOCATION__//g;
2284: }
2285:
2286: sub get_param {
2287: my ($param,$parstack,$safeeval,$context,$case_insensitive, $noelide) = @_;
2288:
2289: if ( ! $context ) { $context = -1; }
2290: my $args ='';
2291: if ( $#$parstack > (-2-$context) ) { $args=$$parstack[$context]; }
2292: if ( ! $Apache::lonxml::usestyle ) {
2293: $args=$Apache::lonxml::style_values.$args;
2294: }
2295:
2296:
2297: if ($noelide) {
2298: # $args =~ s/\\'/'/g;
2299: $args =~ s/'\$/'\\\$/g;
2300: }
2301:
2302: if ( ! $args ) { return undef; }
2303: if ( $case_insensitive ) {
2304: if ($args =~ s/(my (?:.*))(\$\Q$param\E[,\)])/$1.lc($2)/ei) {
2305:
2306: return &Apache::run::run("{$args;".'return $'.$param.'}',
2307: $safeeval); #'
2308: } else {
2309: return undef;
2310: }
2311: } else {
2312: if ( $args =~ /my .*\$\Q$param\E[,\)]/ ) {
2313:
2314: return &Apache::run::run("{$args;".'return $'.$param.'}',
2315: $safeeval); #'
2316: } else {
2317: return undef;
2318: }
2319: }
2320: }
2321:
2322: sub get_param_var {
2323: my ($param,$parstack,$safeeval,$context,$case_insensitive) = @_;
2324: if ( ! $context ) { $context = -1; }
2325: my $args ='';
2326: if ( $#$parstack > (-2-$context) ) { $args=$$parstack[$context]; }
2327: if ( ! $Apache::lonxml::usestyle ) {
2328: $args=$Apache::lonxml::style_values.$args;
2329: }
2330: &Apache::lonxml::debug("Args are $args param is $param");
2331: if ($case_insensitive) {
2332: if (! ($args=~s/(my (?:.*))(\$\Q$param\E[,\)])/$1.lc($2)/ei)) {
2333: return undef;
2334: }
2335: } elsif ( $args !~ /my .*\$\Q$param\E[,\)]/ ) { return undef; }
2336: my $value=&Apache::run::run("{$args;".'return $'.$param.'}',$safeeval); #'
2337: &Apache::lonxml::debug("first run is $value");
2338: if ($value =~ /^[\$\@\%][a-zA-Z_]\w*$/) {
2339: &Apache::lonxml::debug("doing second");
2340: my @result=&Apache::run::run("return $value",$safeeval,1);
2341: if (!defined($result[0])) {
2342: return $value
2343: } else {
2344: if (wantarray) { return @result; } else { return $result[0]; }
2345: }
2346: } else {
2347: return $value;
2348: }
2349: }
2350:
2351: sub register_insert_xml {
2352: my $parser = HTML::LCParser->new($Apache::lonnet::perlvar{'lonTabDir'}
2353: .'/insertlist.xml');
2354: my ($tagnum,$in_help)=(0,0);
2355: my @alltags;
2356: my $tag;
2357: while (my $token = $parser->get_token()) {
2358: if ($token->[0] eq 'S') {
2359: my $key;
2360: if ($token->[1] eq 'tag') {
2361: $tag = $token->[2]{'name'};
2362: if (defined($tag)) {
2363: $insertlist{$tagnum.'.tag'} = $tag;
2364: $insertlist{$tag.'.num'} = $tagnum;
2365: push(@alltags,$tag);
2366: }
2367: } elsif ($in_help && $token->[1] eq 'file') {
2368: $key = $tag.'.helpfile';
2369: } elsif ($in_help && $token->[1] eq 'description') {
2370: $key = $tag.'.helpdesc';
2371: } elsif ($token->[1] eq 'description' ||
2372: $token->[1] eq 'color' ||
2373: $token->[1] eq 'show' ) {
2374: $key = $tag.'.'.$token->[1];
2375: } elsif ($token->[1] eq 'insert_sub') {
2376: $key = $tag.'.function';
2377: } elsif ($token->[1] eq 'help') {
2378: $in_help=1;
2379: } elsif ($token->[1] eq 'allow') {
2380: $key = $tag.'.allow';
2381: }
2382: if (defined($key)) {
2383: $insertlist{$key} = $parser->get_text();
2384: $insertlist{$key} =~ s/(^\s*|\s*$ )//gx;
2385: }
2386: } elsif ($token->[0] eq 'E') {
2387: if ($token->[1] eq 'tag') {
2388: undef($tag);
2389: $tagnum++;
2390: } elsif ($token->[1] eq 'help') {
2391: undef($in_help);
2392: }
2393: }
2394: }
2395:
2396: # parse the allows and ignore tags set to <show>no</show>
2397: foreach my $tag (@alltags) {
2398: next if (!exists($insertlist{$tag.'.allow'}));
2399: my $allow = $insertlist{$tag.'.allow'};
2400: foreach my $element (split(',',$allow)) {
2401: $element =~ s/(^\s*|\s*$ )//gx;
2402: if (!exists($insertlist{$element.'.show'})
2403: || $insertlist{$element.'.show'} ne 'no') {
2404: push(@{ $insertlist{$tag.'.which'} },$element);
2405: }
2406: }
2407: }
2408: }
2409:
2410: sub register_insert {
2411: return ®ister_insert_xml(@_);
2412: # &dump_insertlist('2');
2413: }
2414:
2415: sub dump_insertlist {
2416: my ($ext) = @_;
2417: open(XML,">","/tmp/insertlist.xml.$ext");
2418: print XML ("<insertlist>");
2419: my $i=0;
2420:
2421: while (exists($insertlist{"$i.tag"})) {
2422: my $tag = $insertlist{"$i.tag"};
2423: print XML ("
2424: \t<tag name=\"$tag\">");
2425: if (defined($insertlist{"$tag.description"})) {
2426: print XML ("
2427: \t\t<description>".$insertlist{"$tag.description"}."</description>");
2428: }
2429: if (defined($insertlist{"$tag.color"})) {
2430: print XML ("
2431: \t\t<color>".$insertlist{"$tag.color"}."</color>");
2432: }
2433: if (defined($insertlist{"$tag.function"})) {
2434: print XML ("
2435: \t\t<insert_sub>".$insertlist{"$tag.function"}."</insert_sub>");
2436: }
2437: if (defined($insertlist{"$tag.show"})
2438: && $insertlist{"$tag.show"} ne 'yes') {
2439: print XML ("
2440: \t\t<show>".$insertlist{"$tag.show"}."</show>");
2441: }
2442: if (defined($insertlist{"$tag.helpfile"})) {
2443: print XML ("
2444: \t\t<help>
2445: \t\t\t<file>".$insertlist{"$tag.helpfile"}."</file>");
2446: if ($insertlist{"$tag.helpdesc"} ne '') {
2447: print XML ("
2448: \t\t\t<description>".$insertlist{"$tag.helpdesc"}."</description>");
2449: }
2450: print XML ("
2451: \t\t</help>");
2452: }
2453: if (defined($insertlist{"$tag.which"})) {
2454: print XML ("
2455: \t\t<allow>".join(',',sort(@{ $insertlist{"$tag.which"} }))."</allow>");
2456: }
2457: print XML ("
2458: \t</tag>");
2459: $i++;
2460: }
2461: print XML ("\n</insertlist>\n");
2462: close(XML);
2463: }
2464:
2465: sub description {
2466: my ($token)=@_;
2467: my $tag = &get_tag($token);
2468: return $insertlist{$tag.'.description'};
2469: }
2470:
2471: # Returns a list containing the help file, and the description
2472: sub helpinfo {
2473: my ($token)=@_;
2474: my $tag = &get_tag($token);
2475: return ($insertlist{$tag.'.helpfile'}, &mt($insertlist{$tag.'.helpdesc'}));
2476: }
2477:
2478: sub get_tag {
2479: my ($token)=@_;
2480: my $tagnum;
2481: my $tag=$token->[1];
2482: foreach my $namespace (reverse(@Apache::lonxml::namespace)) {
2483: my $testtag = $namespace.'::'.$tag;
2484: $tagnum = $insertlist{"$testtag.num"};
2485: last if (defined($tagnum));
2486: }
2487: if (!defined($tagnum)) {
2488: $tagnum = $Apache::lonxml::insertlist{"$tag.num"};
2489: }
2490: return $insertlist{"$tagnum.tag"};
2491: }
2492:
2493: ############################################################
2494: # PDF-FORM-METHODS
2495:
2496: =pod
2497:
2498: =item &print_pdf_radiobutton(fieldname, value)
2499:
2500: Returns a latexline to generate a PDF-Form-Radiobutton.
2501: Note: Radiobuttons with equal names are automaticly grouped
2502: in a selection-group.
2503:
2504: $fieldname: PDF internalname of the radiobutton(group)
2505: $value: Value of radiobutton
2506:
2507: =cut
2508: sub print_pdf_radiobutton {
2509: my ($fieldname, $value) = @_;
2510: return '\radioButton[\symbolchoice{circle}]{'
2511: .$fieldname.'}{10bp}{10bp}{'.$value.'}';
2512: }
2513:
2514:
2515: =pod
2516:
2517: =item &print_pdf_start_combobox(fieldname)
2518:
2519: Starts a latexline to generate a PDF-Form-Combobox with text.
2520:
2521: $fieldname: PDF internal name of the Combobox
2522:
2523: =cut
2524: sub print_pdf_start_combobox {
2525: my $result;
2526: my ($fieldName) = @_;
2527: $result .= '\begin{tabularx}{\textwidth}{p{2.5cm}X}'."\n";
2528: $result .= '\comboBox[]{'.$fieldName.'}{2.3cm}{14bp}{'; #
2529:
2530: return $result;
2531: }
2532:
2533:
2534: =pod
2535:
2536: =item &print_pdf_add_combobox_option(options)
2537:
2538: Generates a latexline to add Options to a PDF-Form-ComboBox.
2539:
2540: $option: PDF internal name of the Combobox-Option
2541:
2542: =cut
2543: sub print_pdf_add_combobox_option {
2544:
2545: my $result;
2546: my ($option) = @_;
2547:
2548: $result .= '('.$option.')';
2549:
2550: return $result;
2551: }
2552:
2553:
2554: =pod
2555:
2556: =item &print_pdf_end_combobox(text) {
2557:
2558: Returns latexcode to end a PDF-Form-Combobox with text.
2559:
2560: =cut
2561: sub print_pdf_end_combobox {
2562: my $result;
2563: my ($text) = @_;
2564:
2565: $result .= '}&'.$text."\\\\\n";
2566: $result .= '\end{tabularx}' . "\n";
2567: $result .= '\hspace{2mm}' . "\n";
2568: return $result;
2569: }
2570:
2571:
2572: =pod
2573:
2574: =item &print_pdf_hiddenField(fieldname, user, domain)
2575:
2576: Returns a latexline to generate a PDF-Form-hiddenField with userdata.
2577:
2578: $fieldname label for hiddentextfield
2579: $user: name of user
2580: $domain: domain of user
2581:
2582: =cut
2583: sub print_pdf_hiddenfield {
2584: my $result;
2585: my ($fieldname, $user, $domain) = @_;
2586:
2587: $result .= '\textField [\F{\FHidden}\F{-\FPrint}\V{'.$domain.'&'.$user.'}]{'.$fieldname.'}{0in}{0in}'."\n";
2588:
2589: return $result;
2590: }
2591:
2592: 1;
2593: __END__
2594:
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