1: # The LearningOnline Network with CAPA
2: # XML Parser Module
3: #
4: # $Id: lonxml.pm,v 1.531.2.24.2.1 2023/12/29 23:40:37 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 tokeninputfield {
234: my $defhost=$Apache::lonnet::perlvar{'lonHostID'};
235: $defhost=~tr/a-z/A-Z/;
236: return (<<ENDINPUTFIELD)
237: <script type="text/javascript">
238: function updatetoken() {
239: var comp=new Array;
240: var barcode=unescape(document.tokeninput.barcode.value);
241: comp=barcode.split('*');
242: if (typeof(comp[0])!="undefined") {
243: document.tokeninput.codeone.value=comp[0];
244: }
245: if (typeof(comp[1])!="undefined") {
246: document.tokeninput.codetwo.value=comp[1];
247: }
248: if (typeof(comp[2])!="undefined") {
249: comp[2]=comp[2].toUpperCase();
250: document.tokeninput.codethree.value=comp[2];
251: }
252: document.tokeninput.barcode.value='';
253: }
254: </script>
255: <form method="post" name="tokeninput" action="">
256: <table border="2" bgcolor="#FFFFBB">
257: <tr><th>DocID Checkin</th></tr>
258: <tr><td>
259: <table>
260: <tr>
261: <td>Scan in Barcode</td>
262: <td><input type="text" size="22" name="barcode"
263: onchange="updatetoken()"/></td>
264: </tr>
265: <tr><td><i>or</i> Type in DocID</td>
266: <td>
267: <input type="text" size="5" name="codeone" />
268: <b><font size="+2">*</font></b>
269: <input type="text" size="5" name="codetwo" />
270: <b><font size="+2">*</font></b>
271: <input type="text" size="10" name="codethree" value="$defhost"
272: onchange="this.value=this.value.toUpperCase()" />
273: </td></tr>
274: </table>
275: </td></tr>
276: <tr><td><input type="submit" value="Check in DocID" /></td></tr>
277: </table>
278: </form>
279: ENDINPUTFIELD
280: }
281:
282: sub maketoken {
283: my ($symb,$tuname,$tudom,$tcrsid)=@_;
284: unless ($symb) {
285: $symb=&Apache::lonnet::symbread();
286: }
287: unless ($tuname) {
288: $tuname=$env{'user.name'};
289: $tudom=$env{'user.domain'};
290: $tcrsid=$env{'request.course.id'};
291: }
292: return &Apache::lonnet::checkout($symb,$tuname,$tudom,$tcrsid);
293: }
294:
295: sub printtokenheader {
296: my ($target,$token,$tsymb,$tcrsid,$tudom,$tuname)=@_;
297: unless ($token) { return ''; }
298:
299: my ($symb,$courseid,$domain,$name) = &Apache::lonnet::whichuser();
300: unless ($tsymb) {
301: $tsymb=$symb;
302: }
303: unless ($tuname) {
304: $tuname=$name;
305: $tudom=$domain;
306: $tcrsid=$courseid;
307: }
308:
309: my $plainname=&Apache::loncommon::plainname($tuname,$tudom);
310:
311: if ($target eq 'web') {
312: my %idhash=&Apache::lonnet::idrget($tudom,($tuname));
313: return
314: '<img align="right" src="/cgi-bin/barcode.png?encode='.$token.'" />'.
315: &mt('Checked out for').' '.$plainname.
316: '<br />'.&mt('User').': '.$tuname.' at '.$tudom.
317: '<br />'.&mt('ID').': '.$idhash{$tuname}.
318: '<br />'.&mt('CourseID').': '.$tcrsid.
319: '<br />'.&mt('Course').': '.$env{'course.'.$tcrsid.'.description'}.
320: '<br />'.&mt('DocID').': '.$token.
321: '<br />'.&mt('Time').': '.&Apache::lonlocal::locallocaltime().'<hr />';
322: } else {
323: return $token;
324: }
325: }
326:
327: sub printalltags {
328: my $temp;
329: foreach $temp (sort keys %Apache::lonxml::alltags) {
330: &Apache::lonxml::debug("$temp -- ".
331: join(',',@{ $Apache::lonxml::alltags{$temp} }));
332: }
333: }
334:
335: sub xmlparse {
336: my ($request,$target,$content_file_string,$safeinit,%style_for_target) = @_;
337:
338: &setup_globals($request,$target);
339: &Apache::inputtags::initialize_inputtags();
340: &Apache::bridgetask::initialize_bridgetask();
341: &Apache::outputtags::initialize_outputtags();
342: &Apache::edit::initialize_edit();
343: &Apache::londefdef::initialize_londefdef();
344:
345: #
346: # do we have a course style file?
347: #
348:
349: if ($env{'request.course.id'} && $env{'request.state'} ne 'construct') {
350: my $bodytext=
351: $env{'course.'.$env{'request.course.id'}.'.default_xml_style'};
352: if ($bodytext) {
353: foreach my $file (split(',',$bodytext)) {
354: my $location=&Apache::lonnet::filelocation('',$file);
355: my $styletext=&Apache::lonnet::getfile($location);
356: if ($styletext ne '-1') {
357: %style_for_target = (%style_for_target,
358: &Apache::style::styleparser($target,$styletext));
359: }
360: }
361: }
362: } elsif ($env{'construct.style'}
363: && ($env{'request.state'} eq 'construct')) {
364: my $location=&Apache::lonnet::filelocation('',$env{'construct.style'});
365: my $styletext=&Apache::lonnet::getfile($location);
366: if ($styletext ne '-1') {
367: %style_for_target = (%style_for_target,
368: &Apache::style::styleparser($target,$styletext));
369: }
370: }
371: #&printalltags();
372: my @pars = ();
373: my $pwd=$env{'request.filename'};
374: $pwd =~ s:/[^/]*$::;
375: &newparser(\@pars,\$content_file_string,$pwd);
376:
377: my $safeeval = new Safe;
378: my $safehole = new Safe::Hole;
379: &init_safespace($target,$safeeval,$safehole,$safeinit);
380: #-------------------- Redefinition of the target in the case of compound target
381:
382: ($target, my @tenta) = split('&&',$target);
383:
384: my @stack = ();
385: my @parstack = ();
386: &initdepth();
387: &init_alarm();
388: my $finaloutput = &inner_xmlparse($target,\@stack,\@parstack,\@pars,
389: $safeeval,\%style_for_target,1);
390:
391: if (@stack) {
392: &warning(&mt('At end of file some tags were still left unclosed:').
393: ' <tt><'.join('></tt>, <tt><',reverse(@stack)).
394: '></tt>');
395: }
396: if ($env{'request.uri'}) {
397: &writeallows($env{'request.uri'});
398: }
399: &do_registered_ssi();
400: if ($Apache::lonxml::counter_changed) { &store_counter() }
401:
402: &clean_safespace($safeeval);
403:
404: if (@script_var_displays) {
405: if ($finaloutput =~ m{</body>\s*</html>\s*$}s) {
406: my $scriptoutput = join('',@script_var_displays);
407: $finaloutput=~s{(</body>\s*</html>)\s*$}{$scriptoutput$1}s;
408: } else {
409: $finaloutput .= join('',@script_var_displays);
410: }
411: undef(@script_var_displays);
412: }
413: &init_state();
414: if ($env{'form.return_only_error_and_warning_counts'}) {
415: if ($env{'request.filename'}=~/\.(html|htm|xml)$/i) {
416: my $error=&verify_html($content_file_string);
417: if ($error) { $errorcount++; }
418: }
419: return "$errorcount:$warningcount";
420: }
421: return $finaloutput;
422: }
423:
424: sub latex_special_symbols {
425: my ($string,$where)=@_;
426: #
427: # If e.g. in verbatim mode, then don't substitute.
428: # but return original string.
429: #
430: if (!($Apache::lonxml::substitute_LaTeX_symbols)) {
431: return $string;
432: }
433: if ($where eq 'header') {
434: $string =~ s/\\/\$\\backslash\$/g; # \ -> $\backslash$ per LaTex line by line pg 10.
435: $string =~ s/(\$|%|\{|\})/\\$1/g;
436: $string=&Apache::lonprintout::character_chart($string);
437: # any & or # leftover should be safe to just escape
438: $string=~s/([^\\])\&/$1\\\&/g;
439: $string=~s/([^\\])\#/$1\\\#/g;
440: $string =~ s/_/\\_/g; # _ -> \_
441: $string =~ s/\^/\\\^{}/g; # ^ -> \^{}
442: } else {
443: $string=~s/\\/\\ensuremath{\\backslash}/g;
444: $string=~s/\\\%|\%/\\\%/g;
445: $string=~s/\\\{|\{/\\{/g;
446: $string=~s/\\}|}/\\}/g;
447: $string=~s/\\ensuremath\\\{\\backslash\\}/\\ensuremath{\\backslash}/g;
448: $string=~s/\\\$|\$/\\\$/g;
449: $string=~s/\\\_|\_/\\\_/g;
450: $string=~s/([^\\]|^)(\~|\^)/$1\\$2\\strut /g;
451: $string=~s/(>|<)/\\ensuremath\{$1\}/g; #more or less
452: $string=&Apache::lonprintout::character_chart($string);
453: # any & or # leftover should be safe to just escape
454: $string=~s/\\\&|\&/\\\&/g;
455: $string=~s/\\\#|\#/\\\#/g;
456: $string=~s/\|/\$\\mid\$/g;
457: #single { or } How to escape?
458: }
459: return $string;
460: }
461:
462: sub inner_xmlparse {
463: my ($target,$stack,$parstack,$pars,$safeeval,$style_for_target,$start)=@_;
464: my $finaloutput = '';
465: my $result;
466: my $token;
467: my $dontpop=0;
468: my $lastdontpop;
469: my $lastendtag;
470: my $startredirection = $Apache::lonxml::redirection;
471: while ( $#$pars > -1 ) {
472: while ($token = $$pars['-1']->get_token) {
473: if (($token->[0] eq 'T') || ($token->[0] eq 'C') ) {
474: if ($metamode<1) {
475: my $text=$token->[1];
476: if ($token->[0] eq 'C' && $target eq 'tex') {
477: $text = '';
478: # $text = '%'.$text."\n";
479: }
480: $result.=$text;
481: }
482: } elsif (($token->[0] eq 'D')) {
483: if ($metamode<1 && $target eq 'web') {
484: my $text=$token->[1];
485: $result.=$text;
486: }
487: } elsif ($token->[0] eq 'PI') {
488: if ($metamode<1 && $target eq 'web') {
489: $result=$token->[2];
490: }
491: } elsif ($token->[0] eq 'S') {
492: # add tag to stack
493: push (@$stack,$token->[1]);
494: # add parameters list to another stack
495: push (@$parstack,&parstring($token));
496: &increasedepth($token);
497: if ($Apache::lonxml::usestyle &&
498: exists($$style_for_target{$token->[1]})) {
499: $Apache::lonxml::usestyle=0;
500: my $string=$$style_for_target{$token->[1]}.
501: '<LONCAPA_INTERNAL_TURN_STYLE_ON />';
502: &Apache::lonxml::newparser($pars,\$string);
503: $Apache::lonxml::style_values=$$parstack[-1];
504: $Apache::lonxml::style_end_values=$$parstack[-1];
505: } else {
506: $result = &callsub("start_$token->[1]", $target, $token, $stack,
507: $parstack, $pars, $safeeval, $style_for_target);
508: }
509: } elsif ($token->[0] eq 'E') {
510: if ($Apache::lonxml::usestyle &&
511: exists($$style_for_target{'/'."$token->[1]"})) {
512: $Apache::lonxml::usestyle=0;
513: my $string=$$style_for_target{'/'.$token->[1]}.
514: '<LONCAPA_INTERNAL_TURN_STYLE_ON end="'.$token->[1].'" />';
515: &Apache::lonxml::newparser($pars,\$string);
516: $Apache::lonxml::style_values=$Apache::lonxml::style_end_values;
517: $Apache::lonxml::style_end_values='';
518: $dontpop=1;
519: } else {
520: #clear out any tags that didn't end
521: while ($token->[1] ne $$stack['-1'] && ($#$stack > -1)) {
522: my $lasttag=$$stack[-1];
523: if ($token->[1] =~ /^\Q$lasttag\E$/i) {
524: &Apache::lonxml::warning(&mt('Using tag [_1] on line [_2] as end tag to [_3]','</'.$token->[1].'>','.$token->[3].','<'.$$stack[-1].'>'));
525: last;
526: } else {
527: &Apache::lonxml::warning(&mt('Found tag [_1] on line [_2] when looking for [_3] in file.','</'.$token->[1].'>',$token->[3],'</'.$$stack[-1].'>'));
528: &end_tag($stack,$parstack,$token);
529: }
530: }
531: $result = &callsub("end_$token->[1]", $target, $token, $stack,
532: $parstack, $pars,$safeeval, $style_for_target);
533: }
534: } else {
535: &Apache::lonxml::error("Unknown token event :$token->[0]:$token->[1]:");
536: }
537: #evaluate variable refs in result
538: if ($Apache::lonxml::post_evaluate &&$result ne "") {
539: my $extras;
540: if (!$Apache::lonxml::usestyle) {
541: $extras=$Apache::lonxml::style_values;
542: }
543: if ( $#$parstack > -1 ) {
544: $result=&Apache::run::evaluate($result,$safeeval,$extras.$$parstack[-1]);
545: } else {
546: $result= &Apache::run::evaluate($result,$safeeval,$extras);
547: }
548: }
549: $Apache::lonxml::post_evaluate=1;
550:
551: if (($token->[0] eq 'T') || ($token->[0] eq 'C') || ($token->[0] eq 'D') ) {
552: #Style file definitions should be correct
553: if ($target eq 'tex' && ($Apache::lonxml::usestyle)) {
554: $result=&latex_special_symbols($result);
555: }
556: }
557:
558: if ($Apache::lonxml::redirection) {
559: $Apache::lonxml::outputstack['-1'] .= $result;
560: } else {
561: $finaloutput.=$result;
562: }
563: $result = '';
564:
565: if ($token->[0] eq 'E') {
566: if ($dontpop) {
567: $lastdontpop = $token;
568: } else {
569: $lastendtag = $token->[1];
570: &end_tag($stack,$parstack,$token);
571: }
572: }
573: $dontpop=0;
574: }
575: if ($#$pars > -1) {
576: pop @$pars;
577: pop @Apache::lonxml::pwd;
578: }
579: }
580:
581: if (($#$stack == 0) && ($stack->[0] eq 'physnet') && ($target eq 'web') &&
582: ($lastendtag eq 'LONCAPA_INTERNAL_TURN_STYLE_ON')) {
583: if ((ref($lastdontpop) eq 'ARRAY') && ($lastdontpop->[1] eq 'physnet')) {
584: &end_tag($stack,$parstack,$lastdontpop);
585: }
586: }
587:
588: # if ($target eq 'meta') {
589: # $finaloutput.=&endredirection;
590: # }
591:
592: if ( $start && $target eq 'grade') { &endredirection(); }
593: if ( $Apache::lonxml::redirection > $startredirection) {
594: while ($Apache::lonxml::redirection > $startredirection) {
595: $finaloutput .= &endredirection();
596: }
597: }
598: if (($ENV{'QUERY_STRING'}) && ($target eq 'web')) {
599: $finaloutput=&afterburn($finaloutput);
600: }
601: if ($target eq 'modified') {
602: # if modfied, handle startpart and endpart
603: $finaloutput=~s/\<startpartmarker[^\>]*\>(.*)\<endpartmarker[^\>]*\>/<part>$1<\/part>/gs;
604: }
605: return $finaloutput;
606: }
607:
608: ##
609: ## Looks to see if there is a subroutine defined for this tag. If so, call it,
610: ## otherwise do not call it as we do not know what it is.
611: ##
612: sub callsub {
613: my ($sub,$target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
614: my $currentstring='';
615: my $nodefault;
616: {
617: my $sub1;
618: no strict 'refs';
619: my $tag=$token->[1];
620: # get utterly rid of extended html tags
621: if ($tag=~/^x\-/i) { return ''; }
622: my $space=$Apache::lonxml::alltags{$tag}[-1];
623: if (!$space) {
624: $tag=~tr/A-Z/a-z/;
625: $sub=~tr/A-Z/a-z/;
626: $space=$Apache::lonxml::alltags{$tag}[-1]
627: }
628:
629: my $deleted=0;
630: if (($token->[0] eq 'S') && ($target eq 'modified')) {
631: $deleted=&Apache::edit::handle_delete($space,$target,$token,$tagstack,
632: $parstack,$parser,$safeeval,
633: $style);
634: }
635: if (!$deleted) {
636: if ($space) {
637: #&Apache::lonxml::debug("Calling sub $sub in $space $metamode");
638: $sub1="$space\:\:$sub";
639: ($currentstring,$nodefault) = &$sub1($target,$token,$tagstack,
640: $parstack,$parser,$safeeval,
641: $style);
642: } else {
643: if ($target eq 'tex') {
644: # throw away tag name
645: return '';
646: }
647: #&Apache::lonxml::debug("NOT Calling sub $sub in $space $metamode");
648: if ($metamode <1) {
649: if (defined($token->[4]) && ($metamode < 1)) {
650: $currentstring = $token->[4];
651: } else {
652: $currentstring = $token->[2];
653: }
654: }
655: }
656: # &Apache::lonxml::debug("nodefalt:$nodefault:");
657: if ($currentstring eq '' && $nodefault eq '') {
658: if ($target eq 'edit') {
659: #&Apache::lonxml::debug("doing default edit for $token->[1]");
660: if ($token->[0] eq 'S') {
661: $currentstring = &Apache::edit::tag_start($target,$token);
662: } elsif ($token->[0] eq 'E') {
663: $currentstring = &Apache::edit::tag_end($target,$token);
664: }
665: }
666: }
667: if ($target eq 'modified' && $nodefault eq '') {
668: if ($currentstring eq '') {
669: if ($token->[0] eq 'S') {
670: $currentstring = $token->[4];
671: } elsif ($token->[0] eq 'E') {
672: $currentstring = $token->[2];
673: } else {
674: $currentstring = $token->[2];
675: }
676: }
677: if ($token->[0] eq 'S') {
678: $currentstring.=&Apache::edit::handle_insert();
679: } elsif ($token->[0] eq 'E') {
680: $currentstring.=&Apache::edit::handle_insertafter($token->[1]);
681: }
682: }
683: }
684: use strict 'refs';
685: }
686: return $currentstring;
687: }
688:
689: {
690: my %state;
691:
692: sub init_state {
693: undef(%state);
694: }
695:
696: sub set_state {
697: my ($key,$value) = @_;
698: $state{$key} = $value;
699: return $value;
700: }
701: sub get_state {
702: my ($key) = @_;
703: return $state{$key};
704: }
705: }
706:
707: sub setup_globals {
708: my ($request,$target)=@_;
709: $Apache::lonxml::request=$request;
710: $errorcount=0;
711: $warningcount=0;
712: $Apache::lonxml::internal_error=0;
713: $Apache::lonxml::default_homework_loaded=0;
714: $Apache::lonxml::usestyle=1;
715: &init_counter();
716: &clear_bubble_lines_for_part();
717: &init_state();
718: &set_state('target',$target);
719: @Apache::lonxml::pwd=();
720: @Apache::lonxml::extlinks=();
721: @script_var_displays=();
722: @Apache::lonxml::ssi_info=();
723: $Apache::lonxml::post_evaluate=1;
724: $Apache::lonxml::warnings_error_header='';
725: $Apache::lonxml::substitute_LaTeX_symbols = 1;
726: if ($target eq 'meta') {
727: $Apache::lonxml::redirection = 0;
728: $Apache::lonxml::metamode = 1;
729: $Apache::lonxml::evaluate = 1;
730: $Apache::lonxml::import = 0;
731: } elsif ($target eq 'answer') {
732: $Apache::lonxml::redirection = 0;
733: $Apache::lonxml::metamode = 1;
734: $Apache::lonxml::evaluate = 1;
735: $Apache::lonxml::import = 1;
736: } elsif ($target eq 'grade') {
737: &startredirection(); #ended in inner_xmlparse on exit
738: $Apache::lonxml::metamode = 0;
739: $Apache::lonxml::evaluate = 1;
740: $Apache::lonxml::import = 1;
741: } elsif ($target eq 'modified') {
742: $Apache::lonxml::redirection = 0;
743: $Apache::lonxml::metamode = 0;
744: $Apache::lonxml::evaluate = 0;
745: $Apache::lonxml::import = 0;
746: } elsif ($target eq 'edit') {
747: $Apache::lonxml::redirection = 0;
748: $Apache::lonxml::metamode = 0;
749: $Apache::lonxml::evaluate = 0;
750: $Apache::lonxml::import = 0;
751: } elsif ($target eq 'analyze') {
752: $Apache::lonxml::redirection = 0;
753: $Apache::lonxml::metamode = 0;
754: $Apache::lonxml::evaluate = 1;
755: $Apache::lonxml::import = 1;
756: } else {
757: $Apache::lonxml::redirection = 0;
758: $Apache::lonxml::metamode = 0;
759: $Apache::lonxml::evaluate = 1;
760: $Apache::lonxml::import = 1;
761: }
762: }
763:
764: sub init_safespace {
765: my ($target,$safeeval,$safehole,$safeinit) = @_;
766: $safeeval->reval('use LaTeX::Table;');
767: $safeeval->deny_only(':dangerous');
768: $safeeval->reval('use LONCAPA::LCMathComplex;');
769: $safeeval->permit_only(":default");
770: $safeeval->permit("entereval");
771: $safeeval->permit(":base_math");
772: $safeeval->permit("sort");
773: $safeeval->permit("time");
774: $safeeval->permit("caller");
775: $safeeval->deny("rand");
776: $safeeval->deny("srand");
777: $safeeval->deny(":base_io");
778: $safehole->wrap(\&Apache::scripttag::xmlparse,$safeeval,'&xmlparse');
779: $safehole->wrap(\&Apache::outputtags::multipart,$safeeval,'&multipart');
780: $safehole->wrap(\&Apache::lonnet::EXT,$safeeval,'&EXT');
781: $safehole->wrap(\&Apache::chemresponse::chem_standard_order,$safeeval,
782: '&chem_standard_order');
783: $safehole->wrap(\&Apache::response::check_status,$safeeval,'&check_status');
784: $safehole->wrap(\&Apache::response::implicit_multiplication,$safeeval,'&implicit_multiplication');
785:
786: $safehole->wrap(\&Apache::lonmaxima::maxima_eval,$safeeval,'&maxima_eval');
787: $safehole->wrap(\&Apache::lonmaxima::maxima_check,$safeeval,'&maxima_check');
788: $safehole->wrap(\&Apache::lonmaxima::maxima_cas_formula_fix,$safeeval,
789: '&maxima_cas_formula_fix');
790:
791: $safehole->wrap(\&Apache::lonr::r_eval,$safeeval,'&r_eval');
792: $safehole->wrap(\&Apache::lonr::Rentry,$safeeval,'&Rentry');
793: $safehole->wrap(\&Apache::lonr::Rarray,$safeeval,'&Rarray');
794: $safehole->wrap(\&Apache::lonr::r_check,$safeeval,'&r_check');
795: $safehole->wrap(\&Apache::lonr::r_cas_formula_fix,$safeeval,
796: '&r_cas_formula_fix');
797:
798: $safehole->wrap(\&Apache::caparesponse::capa_formula_fix,$safeeval,
799: '&capa_formula_fix');
800:
801: $safehole->wrap(\&Apache::lonlocal::locallocaltime,$safeeval,
802: '&locallocaltime');
803:
804: $safehole->wrap(\&Math::Cephes::asin,$safeeval,'&asin');
805: $safehole->wrap(\&Math::Cephes::acos,$safeeval,'&acos');
806: $safehole->wrap(\&Math::Cephes::atan,$safeeval,'&atan');
807: $safehole->wrap(\&Math::Cephes::sinh,$safeeval,'&sinh');
808: $safehole->wrap(\&Math::Cephes::cosh,$safeeval,'&cosh');
809: $safehole->wrap(\&Math::Cephes::tanh,$safeeval,'&tanh');
810: $safehole->wrap(\&Math::Cephes::asinh,$safeeval,'&asinh');
811: $safehole->wrap(\&Math::Cephes::acosh,$safeeval,'&acosh');
812: $safehole->wrap(\&Math::Cephes::atanh,$safeeval,'&atanh');
813: $safehole->wrap(\&Math::Cephes::erf,$safeeval,'&erf');
814: $safehole->wrap(\&Math::Cephes::erfc,$safeeval,'&erfc');
815: $safehole->wrap(\&Math::Cephes::j0,$safeeval,'&j0');
816: $safehole->wrap(\&Math::Cephes::j1,$safeeval,'&j1');
817: $safehole->wrap(\&Math::Cephes::jn,$safeeval,'&jn');
818: $safehole->wrap(\&Math::Cephes::jv,$safeeval,'&jv');
819: $safehole->wrap(\&Math::Cephes::y0,$safeeval,'&y0');
820: $safehole->wrap(\&Math::Cephes::y1,$safeeval,'&y1');
821: $safehole->wrap(\&Math::Cephes::yn,$safeeval,'&yn');
822: $safehole->wrap(\&Math::Cephes::yv,$safeeval,'&yv');
823:
824: $safehole->wrap(\&Math::Cephes::bdtr ,$safeeval,'&bdtr' );
825: $safehole->wrap(\&Math::Cephes::bdtrc ,$safeeval,'&bdtrc' );
826: $safehole->wrap(\&Math::Cephes::bdtri ,$safeeval,'&bdtri' );
827: $safehole->wrap(\&Math::Cephes::btdtr ,$safeeval,'&btdtr' );
828: $safehole->wrap(\&Math::Cephes::chdtr ,$safeeval,'&chdtr' );
829: $safehole->wrap(\&Math::Cephes::chdtrc,$safeeval,'&chdtrc');
830: $safehole->wrap(\&Math::Cephes::chdtri,$safeeval,'&chdtri');
831: $safehole->wrap(\&Math::Cephes::fdtr ,$safeeval,'&fdtr' );
832: $safehole->wrap(\&Math::Cephes::fdtrc ,$safeeval,'&fdtrc' );
833: $safehole->wrap(\&Math::Cephes::fdtri ,$safeeval,'&fdtri' );
834: $safehole->wrap(\&Math::Cephes::gdtr ,$safeeval,'&gdtr' );
835: $safehole->wrap(\&Math::Cephes::gdtrc ,$safeeval,'&gdtrc' );
836: $safehole->wrap(\&Math::Cephes::nbdtr ,$safeeval,'&nbdtr' );
837: $safehole->wrap(\&Math::Cephes::nbdtrc,$safeeval,'&nbdtrc');
838: $safehole->wrap(\&Math::Cephes::nbdtri,$safeeval,'&nbdtri');
839: $safehole->wrap(\&Math::Cephes::ndtr ,$safeeval,'&ndtr' );
840: $safehole->wrap(\&Math::Cephes::ndtri ,$safeeval,'&ndtri' );
841: $safehole->wrap(\&Math::Cephes::pdtr ,$safeeval,'&pdtr' );
842: $safehole->wrap(\&Math::Cephes::pdtrc ,$safeeval,'&pdtrc' );
843: $safehole->wrap(\&Math::Cephes::pdtri ,$safeeval,'&pdtri' );
844: $safehole->wrap(\&Math::Cephes::stdtr ,$safeeval,'&stdtr' );
845: $safehole->wrap(\&Math::Cephes::stdtri,$safeeval,'&stdtri');
846:
847: $safehole->wrap(\&Math::Cephes::Matrix::mat,$safeeval,'&mat');
848: $safehole->wrap(\&Math::Cephes::Matrix::new,$safeeval,
849: '&Math::Cephes::Matrix::new');
850: $safehole->wrap(\&Math::Cephes::Matrix::coef,$safeeval,
851: '&Math::Cephes::Matrix::coef');
852: $safehole->wrap(\&Math::Cephes::Matrix::clr,$safeeval,
853: '&Math::Cephes::Matrix::clr');
854: $safehole->wrap(\&Math::Cephes::Matrix::add,$safeeval,
855: '&Math::Cephes::Matrix::add');
856: $safehole->wrap(\&Math::Cephes::Matrix::sub,$safeeval,
857: '&Math::Cephes::Matrix::sub');
858: $safehole->wrap(\&Math::Cephes::Matrix::mul,$safeeval,
859: '&Math::Cephes::Matrix::mul');
860: $safehole->wrap(\&Math::Cephes::Matrix::div,$safeeval,
861: '&Math::Cephes::Matrix::div');
862: $safehole->wrap(\&Math::Cephes::Matrix::inv,$safeeval,
863: '&Math::Cephes::Matrix::inv');
864: $safehole->wrap(\&Math::Cephes::Matrix::transp,$safeeval,
865: '&Math::Cephes::Matrix::transp');
866: $safehole->wrap(\&Math::Cephes::Matrix::simq,$safeeval,
867: '&Math::Cephes::Matrix::simq');
868: $safehole->wrap(\&Math::Cephes::Matrix::mat_to_vec,$safeeval,
869: '&Math::Cephes::Matrix::mat_to_vec');
870: $safehole->wrap(\&Math::Cephes::Matrix::vec_to_mat,$safeeval,
871: '&Math::Cephes::Matrix::vec_to_mat');
872: $safehole->wrap(\&Math::Cephes::Matrix::check,$safeeval,
873: '&Math::Cephes::Matrix::check');
874: $safehole->wrap(\&Math::Cephes::Matrix::check,$safeeval,
875: '&Math::Cephes::Matrix::check');
876:
877: # $safehole->wrap(\&Math::Cephes::new_fract,$safeeval,'&new_fract');
878: # $safehole->wrap(\&Math::Cephes::radd,$safeeval,'&radd');
879: # $safehole->wrap(\&Math::Cephes::rsub,$safeeval,'&rsub');
880: # $safehole->wrap(\&Math::Cephes::rmul,$safeeval,'&rmul');
881: # $safehole->wrap(\&Math::Cephes::rdiv,$safeeval,'&rdiv');
882: # $safehole->wrap(\&Math::Cephes::euclid,$safeeval,'&euclid');
883:
884: $safehole->wrap(\&Math::Random::random_beta,$safeeval,'&math_random_beta');
885: $safehole->wrap(\&Math::Random::random_chi_square,$safeeval,'&math_random_chi_square');
886: $safehole->wrap(\&Math::Random::random_exponential,$safeeval,'&math_random_exponential');
887: $safehole->wrap(\&Math::Random::random_f,$safeeval,'&math_random_f');
888: $safehole->wrap(\&Math::Random::random_gamma,$safeeval,'&math_random_gamma');
889: $safehole->wrap(\&Math::Random::random_multivariate_normal,$safeeval,'&math_random_multivariate_normal');
890: $safehole->wrap(\&Math::Random::random_multinomial,$safeeval,'&math_random_multinomial');
891: $safehole->wrap(\&Math::Random::random_noncentral_chi_square,$safeeval,'&math_random_noncentral_chi_square');
892: $safehole->wrap(\&Math::Random::random_noncentral_f,$safeeval,'&math_random_noncentral_f');
893: $safehole->wrap(\&Math::Random::random_normal,$safeeval,'&math_random_normal');
894: $safehole->wrap(\&Math::Random::random_permutation,$safeeval,'&math_random_permutation');
895: $safehole->wrap(\&Math::Random::random_permuted_index,$safeeval,'&math_random_permuted_index');
896: $safehole->wrap(\&Math::Random::random_uniform,$safeeval,'&math_random_uniform');
897: $safehole->wrap(\&Math::Random::random_poisson,$safeeval,'&math_random_poisson');
898: $safehole->wrap(\&Math::Random::random_uniform_integer,$safeeval,'&math_random_uniform_integer');
899: $safehole->wrap(\&Math::Random::random_negative_binomial,$safeeval,'&math_random_negative_binomial');
900: $safehole->wrap(\&Math::Random::random_binomial,$safeeval,'&math_random_binomial');
901: $safehole->wrap(\&Math::Random::random_seed_from_phrase,$safeeval,'&random_seed_from_phrase');
902: $safehole->wrap(\&Math::Random::random_set_seed_from_phrase,$safeeval,'&random_set_seed_from_phrase');
903: $safehole->wrap(\&Math::Random::random_get_seed,$safeeval,'&random_get_seed');
904: $safehole->wrap(\&Math::Random::random_set_seed,$safeeval,'&random_set_seed');
905: $safehole->wrap(\&Apache::loncommon::languages,$safeeval,'&languages');
906: $safehole->wrap(\&Apache::lonxml::error,$safeeval,'&LONCAPA_INTERNAL_ERROR');
907: $safehole->wrap(\&Apache::lonxml::debug,$safeeval,'&LONCAPA_INTERNAL_DEBUG');
908: $safehole->wrap(\&Apache::lonnet::logthis,$safeeval,'&LONCAPA_INTERNAL_LOGTHIS');
909: $safehole->wrap(\&Apache::inputtags::finalizeawards,$safeeval,'&LONCAPA_INTERNAL_FINALIZEAWARDS');
910: $safehole->wrap(\&Apache::caparesponse::get_sigrange,$safeeval,'&LONCAPA_INTERNAL_get_sigrange');
911: $safehole->wrap(\&Apache::functionplotresponse::fpr_val,$safeeval,'&fpr_val');
912: $safehole->wrap(\&Apache::functionplotresponse::fpr_f,$safeeval,'&fpr_f');
913: $safehole->wrap(\&Apache::functionplotresponse::fpr_dfdx,$safeeval,'&fpr_dfdx');
914: $safehole->wrap(\&Apache::functionplotresponse::fpr_d2fdx2,$safeeval,'&fpr_d2fdx2');
915: $safehole->wrap(\&Apache::functionplotresponse::fpr_vectorcoords,$safeeval,'&fpr_vectorcoords');
916: $safehole->wrap(\&Apache::functionplotresponse::fpr_objectcoords,$safeeval,'&fpr_objectcoords');
917: $safehole->wrap(\&Apache::functionplotresponse::fpr_vectorlength,$safeeval,'&fpr_vectorlength');
918: $safehole->wrap(\&Apache::functionplotresponse::fpr_vectorangle,$safeeval,'&fpr_vectorangle');
919: $safehole->wrap(\&Math::Calculus::Expression::math_calculus_expression,$safeeval,'&math_calculus_expression');
920: $safehole->wrap(\&Number::FormatEng::format_eng,$safeeval,'&number_format_eng');
921: $safehole->wrap(\&Number::FormatEng::format_pref,$safeeval,'&number_format_pref');
922:
923: # use Data::Dumper;
924: # $safehole->wrap(\&Data::Dumper::Dumper,$safeeval,'&LONCAPA_INTERNAL_Dumper');
925: #need to inspect this class of ops
926: # $safeeval->deny(":base_orig");
927: $safeeval->permit("require");
928: $safeinit .= ';$external::target="'.$target.'";';
929: &Apache::run::run($safeinit,$safeeval);
930: my $rawrndseed = &initialize_rndseed($safeeval);
931: if ($target eq 'grade') {
932: $Apache::lonhomework::rawrndseed = $rawrndseed;
933: }
934: }
935:
936: sub clean_safespace {
937: my ($safeeval) = @_;
938: delete_package_recurse($safeeval->{Root});
939: }
940:
941: sub delete_package_recurse {
942: my ($package) = @_;
943: my @subp;
944: {
945: no strict 'refs';
946: while (my ($key,$val) = each(%{*{"$package\::"}})) {
947: if (!defined($val)) { next; }
948: local (*ENTRY) = $val;
949: if (defined *ENTRY{HASH} && $key =~ /::$/ &&
950: $key ne "main::" && $key ne "<none>::")
951: {
952: my ($p) = $package ne "main" ? "$package\::" : "";
953: ($p .= $key) =~ s/::$//;
954: push(@subp,$p);
955: }
956: }
957: }
958: foreach my $p (@subp) {
959: delete_package_recurse($p);
960: }
961: Symbol::delete_package($package);
962: }
963:
964: sub initialize_rndseed {
965: my ($safeeval)=@_;
966: my $rndseed;
967: my ($symb,$courseid,$domain,$name) = &Apache::lonnet::whichuser();
968: $rndseed=&Apache::lonnet::rndseed($symb,$courseid,$domain,$name);
969: my $safeinit = '$external::randomseed="'.$rndseed.'";';
970: &Apache::lonxml::debug("Setting rndseed to $rndseed");
971: &Apache::run::run($safeinit,$safeeval);
972: return $rndseed;
973: }
974:
975: sub default_homework_load {
976: my ($safeeval)=@_;
977: &Apache::lonxml::debug('Loading default_homework');
978: my $default=&Apache::lonnet::getfile($Apache::lonnet::perlvar{'lonIncludes'}.
979: '/default_homework.lcpm');
980: if ($default eq -1) {
981: &Apache::lonxml::error("<b>Unable to find <i>default_homework.lcpm</i></b>");
982: } else {
983: &Apache::run::run($default,$safeeval);
984: $Apache::lonxml::default_homework_loaded=1;
985: }
986: }
987:
988: {
989: my $alarm_depth;
990: sub init_alarm {
991: alarm(0);
992: $alarm_depth=0;
993: }
994:
995: sub start_alarm {
996: if ($alarm_depth<1) {
997: my $old=alarm($Apache::lonnet::perlvar{'lonScriptTimeout'});
998: if ($old) {
999: &Apache::lonxml::error("Cancelled an alarm of $old, this shouldn't occur.");
1000: }
1001: }
1002: $alarm_depth++;
1003: }
1004:
1005: sub end_alarm {
1006: $alarm_depth--;
1007: if ($alarm_depth<1) { alarm(0); }
1008: }
1009: }
1010: my $metamode_was;
1011: sub startredirection {
1012: if (!$Apache::lonxml::redirection) {
1013: $metamode_was=$Apache::lonxml::metamode;
1014: }
1015: $Apache::lonxml::metamode=0;
1016: $Apache::lonxml::redirection++;
1017: push (@Apache::lonxml::outputstack, '');
1018: }
1019:
1020: sub endredirection {
1021: if (!$Apache::lonxml::redirection) {
1022: &Apache::lonxml::error("Endredirection was called before a startredirection, perhaps you have unbalanced tags. Some debugging information:".join ":",caller);
1023: return '';
1024: }
1025: $Apache::lonxml::redirection--;
1026: if (!$Apache::lonxml::redirection) {
1027: $Apache::lonxml::metamode=$metamode_was;
1028: }
1029: pop @Apache::lonxml::outputstack;
1030: }
1031: sub in_redirection {
1032: return ($Apache::lonxml::redirection > 0)
1033: }
1034:
1035: sub end_tag {
1036: my ($tagstack,$parstack,$token)=@_;
1037: pop(@$tagstack);
1038: pop(@$parstack);
1039: &decreasedepth($token);
1040: }
1041:
1042: sub initdepth {
1043: @Apache::lonxml::depthcounter=();
1044: undef($Apache::lonxml::last_depth_count);
1045: }
1046:
1047:
1048: my @timers;
1049: my $lasttime;
1050: # @Apache::lonxml::depthcounter -> count of tags that exist so
1051: # far at each level
1052: # $Apache::lonxml::last_depth_count -> when ascending, need to
1053: # remember the count for the level below the current level (for
1054: # example going from 1_2 -> 1 -> 1_3 need to remember the 2 )
1055:
1056: sub increasedepth {
1057: my ($token) = @_;
1058: push(@Apache::lonxml::depthcounter,$Apache::lonxml::last_depth_count+1);
1059: undef($Apache::lonxml::last_depth_count);
1060: my $time;
1061: if ($Apache::lonxml::debug eq "1") {
1062: push(@timers,[&gettimeofday()]);
1063: $time=&tv_interval($lasttime);
1064: $lasttime=[&gettimeofday()];
1065: }
1066: my $spacing=' 'x($#Apache::lonxml::depthcounter);
1067: $Apache::lonxml::curdepth=join('_',@Apache::lonxml::depthcounter);
1068: # &Apache::lonxml::debug("s$spacing$Apache::lonxml::depth : $Apache::lonxml::olddepth : $Apache::lonxml::curdepth : $token->[1] : $time");
1069: #print "<br />s $Apache::lonxml::depth : $Apache::lonxml::olddepth : $curdepth : $token->[1]\n";
1070: }
1071:
1072: sub decreasedepth {
1073: my ($token) = @_;
1074: if ( $#Apache::lonxml::depthcounter == -1) {
1075: &Apache::lonxml::warning(&mt("Missing tags, unable to properly run file."));
1076: }
1077: $Apache::lonxml::last_depth_count = pop(@Apache::lonxml::depthcounter);
1078:
1079: my ($timer,$time);
1080: if ($Apache::lonxml::debug eq "1") {
1081: $timer=pop(@timers);
1082: $time=&tv_interval($lasttime);
1083: $lasttime=[&gettimeofday()];
1084: }
1085: my $spacing=' 'x($#Apache::lonxml::depthcounter);
1086: $Apache::lonxml::curdepth = join('_',@Apache::lonxml::depthcounter);
1087: # &Apache::lonxml::debug("e$spacing$Apache::lonxml::depth : $Apache::lonxml::olddepth : $Apache::lonxml::curdepth : $token->[1] : $time : ".&tv_interval($timer));
1088: #print "<br />e $Apache::lonxml::depth : $Apache::lonxml::olddepth : $token->[1] : $curdepth\n";
1089: }
1090:
1091: sub get_id {
1092: my ($parstack,$safeeval)=@_;
1093: my $id= &Apache::lonxml::get_param('id',$parstack,$safeeval);
1094: if ($env{'request.state'} eq 'construct' && $id =~ /([._]|[^\w\s\-])/) {
1095: &error(&mt('ID [_1] contains invalid characters. IDs are only allowed to contain letters, numbers, spaces and -','"<tt>'.$id.'</tt>"'));
1096: }
1097: if ($id =~ /^\s*$/) { $id = $Apache::lonxml::curdepth; }
1098: return $id;
1099: }
1100:
1101: sub get_all_text_unbalanced {
1102: #there is a copy of this in lonpublisher.pm
1103: my($tag,$pars)= @_;
1104: my $token;
1105: my $result='';
1106: $tag='<'.$tag.'>';
1107: while ($token = $$pars[-1]->get_token) {
1108: if (($token->[0] eq 'T')||($token->[0] eq 'C')||($token->[0] eq 'D')) {
1109: if ($token->[0] eq 'T' && $token->[2]) {
1110: $result.='<![CDATA['.$token->[1].']]>';
1111: } else {
1112: $result.=$token->[1];
1113: }
1114: } elsif ($token->[0] eq 'PI') {
1115: $result.=$token->[2];
1116: } elsif ($token->[0] eq 'S') {
1117: $result.=$token->[4];
1118: } elsif ($token->[0] eq 'E') {
1119: $result.=$token->[2];
1120: }
1121: if ($result =~ /\Q$tag\E/is) {
1122: ($result,my $redo)=$result =~ /(.*)\Q$tag\E(.*)/is;
1123: #&Apache::lonxml::debug('Got a winner with leftovers ::'.$2);
1124: #&Apache::lonxml::debug('Result is :'.$1);
1125: $redo=$tag.$redo;
1126: &Apache::lonxml::newparser($pars,\$redo);
1127: last;
1128: }
1129: }
1130: return $result
1131:
1132: }
1133:
1134: #########################################################################
1135: # #
1136: # bubble line counter management #
1137: # #
1138: #########################################################################
1139:
1140: =pod
1141:
1142: For bubble grading mode and exam bubble printing mode, the tracking of
1143: the current 'bubble line number' is stored in the %env element
1144: 'form.counter', and is modifed and handled by the following routines.
1145:
1146: The value of it is stored in $Apache:lonxml::counter when live and
1147: stored back to env after done.
1148:
1149: =item &increment_counter($increment, $part_response);
1150:
1151: Increments the internal counter environment variable a specified amount
1152:
1153: Optional Arguments:
1154: $increment - amount to increment by (defaults to 1)
1155: Also 1 if the value is negative or zero.
1156: $part_response - A concatenation of the part and response id
1157: identifying exactly what is being 'answered'.
1158:
1159:
1160: =cut
1161:
1162: sub increment_counter {
1163: my ($increment, $part_response) = @_;
1164: if ($env{'form.grade_noincrement'}) { return; }
1165: if (!defined($increment) || $increment le 0) {
1166: $increment = 1;
1167: }
1168: $Apache::lonxml::counter += $increment;
1169:
1170: # If the caller supplied the response_id parameter,
1171: # Maintain its counter.. creating if necessary.
1172:
1173: if (defined($part_response)) {
1174: if (!defined($Apache::lonxml::counters_per_part{$part_response})) {
1175: $Apache::lonxml::counters_per_part{$part_response} = 0;
1176: }
1177: $Apache::lonxml::counters_per_part{$part_response} += $increment;
1178: my $new_value = $Apache::lonxml::counters_per_part{$part_response};
1179: }
1180:
1181: $Apache::lonxml::counter_changed=1;
1182: }
1183:
1184: =pod
1185:
1186: =item &init_counter($increment);
1187:
1188: Initialize the internal counter environment variable
1189:
1190: =cut
1191:
1192: sub init_counter {
1193: if ($env{'request.state'} eq 'construct') {
1194: $Apache::lonxml::counter=1;
1195: $Apache::lonxml::counter_changed=1;
1196: } elsif (defined($env{'form.counter'})) {
1197: $Apache::lonxml::counter=$env{'form.counter'};
1198: $Apache::lonxml::counter_changed=0;
1199: } else {
1200: $Apache::lonxml::counter=1;
1201: $Apache::lonxml::counter_changed=1;
1202: }
1203: }
1204:
1205: sub store_counter {
1206: &Apache::lonnet::appenv({'form.counter' => $Apache::lonxml::counter});
1207: $Apache::lonxml::counter_changed=0;
1208: return '';
1209: }
1210:
1211: {
1212: my $state;
1213: sub clear_problem_counter {
1214: undef($state);
1215: &Apache::lonnet::delenv('form.counter');
1216: &Apache::lonxml::init_counter();
1217: &Apache::lonxml::store_counter();
1218: }
1219:
1220: sub remember_problem_counter {
1221: &Apache::lonnet::transfer_profile_to_env(undef,undef,1);
1222: $state = $env{'form.counter'};
1223: }
1224:
1225: sub restore_problem_counter {
1226: if (defined($state)) {
1227: &Apache::lonnet::appenv({'form.counter' => $state});
1228: }
1229: }
1230: sub get_problem_counter {
1231: if ($Apache::lonxml::counter_changed) { &store_counter() }
1232: &Apache::lonnet::transfer_profile_to_env(undef,undef,1);
1233: return $env{'form.counter'};
1234: }
1235: }
1236:
1237: =pod
1238:
1239: =item bubble_lines_for_part(part_response)
1240:
1241: Returns the number of lines required to get a response for
1242: $part_response (this is just $Apache::lonxml::counters_per_part{$part_response}
1243:
1244: =cut
1245:
1246: sub bubble_lines_for_part {
1247: my ($part_response) = @_;
1248:
1249: if (!defined($Apache::lonxml::counters_per_part{$part_response})) {
1250: return 0;
1251: } else {
1252: return $Apache::lonxml::counters_per_part{$part_response};
1253: }
1254: }
1255:
1256: =pod
1257:
1258: =item clear_bubble_lines_for_part
1259:
1260: Clears the hash of bubble lines per part. If a caller
1261: needs to analyze several resources this should be called between
1262: resources to reset the hash for each problem being analyzed.
1263:
1264: =cut
1265:
1266: sub clear_bubble_lines_for_part {
1267: undef(%Apache::lonxml::counters_per_part);
1268: }
1269:
1270: =pod
1271:
1272: =item set_bubble_lines(part_response, value)
1273:
1274: If there is a problem part, that for whatever reason
1275: requires bubble lines that are not
1276: the same as the counter increment, it can call this sub during
1277: analysis to set its hash value explicitly.
1278:
1279: =cut
1280:
1281: sub set_bubble_lines {
1282: my ($part_response, $value) = @_;
1283:
1284: $Apache::lonxml::counters_per_part{$part_response} = $value;
1285: }
1286:
1287: =pod
1288:
1289: =item get_bubble_line_hash
1290:
1291: Returns the current bubble line hash. This is assumed to
1292: be small so we return a copy
1293:
1294:
1295: =cut
1296:
1297: sub get_bubble_line_hash {
1298: return %Apache::lonxml::counters_per_part;
1299: }
1300:
1301:
1302: #--------------------------------------------------
1303:
1304: sub get_all_text {
1305: my($tag,$pars,$style)= @_;
1306: my $gotfullstack=1;
1307: if (ref($pars) ne 'ARRAY') {
1308: $gotfullstack=0;
1309: $pars=[$pars];
1310: }
1311: if (ref($style) ne 'HASH') {
1312: $style={};
1313: }
1314: my $depth=0;
1315: my $token;
1316: my $result='';
1317: if ( $tag =~ m:^/: ) {
1318: my $tag=substr($tag,1);
1319: #&Apache::lonxml::debug("have:$tag:");
1320: my $top_empty=0;
1321: while (($depth >=0) && ($#$pars > -1) && (!$top_empty)) {
1322: while (($depth >=0) && ($token = $$pars[-1]->get_token)) {
1323: #&Apache::lonxml::debug("e token:$token->[0]:$depth:$token->[1]:".$#$pars.":".$#Apache::lonxml::pwd);
1324: if (($token->[0] eq 'T')||($token->[0] eq 'C')||($token->[0] eq 'D')) {
1325: if ($token->[2]) {
1326: $result.='<![CDATA['.$token->[1].']]>';
1327: } else {
1328: $result.=$token->[1];
1329: }
1330: } elsif ($token->[0] eq 'PI') {
1331: $result.=$token->[2];
1332: } elsif ($token->[0] eq 'S') {
1333: if ($token->[1] =~ /^\Q$tag\E$/i) { $depth++; }
1334: if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_ON$/) { $Apache::lonxml::usestyle=1; }
1335: if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_OFF$/) { $Apache::lonxml::usestyle=0; }
1336: $result.=$token->[4];
1337: } elsif ($token->[0] eq 'E') {
1338: if ( $token->[1] =~ /^\Q$tag\E$/i) { $depth--; }
1339: #skip sending back the last end tag
1340: if ($depth == 0 && exists($$style{'/'.$token->[1]}) && $Apache::lonxml::usestyle) {
1341: my $string=
1342: '<LONCAPA_INTERNAL_TURN_STYLE_OFF end="yes" />'.
1343: $$style{'/'.$token->[1]}.
1344: $token->[2].
1345: '<LONCAPA_INTERNAL_TURN_STYLE_ON />';
1346: &Apache::lonxml::newparser($pars,\$string);
1347: #&Apache::lonxml::debug("reParsing $string");
1348: next;
1349: }
1350: if ($depth > -1) {
1351: $result.=$token->[2];
1352: } else {
1353: $$pars[-1]->unget_token($token);
1354: }
1355: }
1356: }
1357: if (($depth >=0) && ($#$pars == 0) ) { $top_empty=1; }
1358: if (($depth >=0) && ($#$pars > 0) ) {
1359: pop(@$pars);
1360: pop(@Apache::lonxml::pwd);
1361: }
1362: }
1363: if ($top_empty && $depth >= 0) {
1364: #never found the end tag ran out of text, throw error send back blank
1365: &error('Never found end tag for <'.$tag.
1366: '> current string <pre>'.
1367: &HTML::Entities::encode($result,'<>&"').
1368: '</pre>');
1369: if ($gotfullstack) {
1370: my $newstring='</'.$tag.'>'.$result;
1371: &Apache::lonxml::newparser($pars,\$newstring);
1372: }
1373: $result='';
1374: }
1375: } else {
1376: while ($#$pars > -1) {
1377: while ($token = $$pars[-1]->get_token) {
1378: #&Apache::lonxml::debug("s token:$token->[0]:$depth:$token->[1]");
1379: if (($token->[0] eq 'T')||($token->[0] eq 'C')||
1380: ($token->[0] eq 'D')) {
1381: if ($token->[2]) {
1382: $result.='<![CDATA['.$token->[1].']]>';
1383: } else {
1384: $result.=$token->[1];
1385: }
1386: } elsif ($token->[0] eq 'PI') {
1387: $result.=$token->[2];
1388: } elsif ($token->[0] eq 'S') {
1389: if ( $token->[1] =~ /^\Q$tag\E$/i) {
1390: $$pars[-1]->unget_token($token); last;
1391: } else {
1392: $result.=$token->[4];
1393: }
1394: if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_ON$/) { $Apache::lonxml::usestyle=1; }
1395: if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_OFF$/) { $Apache::lonxml::usestyle=0; }
1396: } elsif ($token->[0] eq 'E') {
1397: $result.=$token->[2];
1398: }
1399: }
1400: if (($#$pars > 0) ) {
1401: pop(@$pars);
1402: pop(@Apache::lonxml::pwd);
1403: } else { last; }
1404: }
1405: }
1406: #&Apache::lonxml::debug("Exit:$result:");
1407: return $result
1408: }
1409:
1410: sub newparser {
1411: my ($parser,$contentref,$dir) = @_;
1412: push (@$parser,HTML::LCParser->new($contentref));
1413: $$parser[-1]->xml_mode(1);
1414: $$parser[-1]->marked_sections(1);
1415: if ( $dir eq '' ) {
1416: push (@Apache::lonxml::pwd, $Apache::lonxml::pwd[$#Apache::lonxml::pwd]);
1417: } else {
1418: push (@Apache::lonxml::pwd, $dir);
1419: }
1420: }
1421:
1422: sub parstring {
1423: my ($token) = @_;
1424: my (@vars,@values);
1425: foreach my $attr (@{$token->[3]}) {
1426: if ($attr!~/\W/) {
1427: my $val=$token->[2]->{$attr};
1428: $val =~ s/([\%\@\\\"\'])/\\$1/g;
1429: $val =~ s/(\$[^\{a-zA-Z_])/\\$1/g;
1430: $val =~ s/(\$)$/\\$1/;
1431: #if ($val =~ m/^[\%\@]/) { $val="\\".$val; }
1432: push(@vars,"\$$attr");
1433: push(@values,"\"$val\"");
1434: }
1435: }
1436: my $var_init =
1437: (@vars) ? 'my ('.join(',',@vars).') = ('.join(',',@values).');'
1438: : '';
1439: return $var_init;
1440: }
1441:
1442: sub extlink {
1443: my ($res,$exact)=@_;
1444: if (!$exact) {
1445: $res=&Apache::lonnet::hreflocation($Apache::lonxml::pwd[-1],$res);
1446: }
1447: push(@Apache::lonxml::extlinks,$res);
1448: }
1449:
1450: sub writeallows {
1451: unless ($#extlinks>=0) { return; }
1452: my $thisurl = &Apache::lonnet::clutter(shift);
1453: if ($env{'httpref.'.$thisurl}) {
1454: $thisurl=$env{'httpref.'.$thisurl};
1455: }
1456: my $thisdir=$thisurl;
1457: $thisdir=~s/\/[^\/]+$//;
1458: my %httpref=();
1459: foreach (@extlinks) {
1460: $httpref{'httpref.'.
1461: &Apache::lonnet::hreflocation($thisdir,&unescape($_))}=$thisurl;
1462: }
1463: @extlinks=();
1464: &Apache::lonnet::appenv(\%httpref);
1465: }
1466:
1467: sub register_ssi {
1468: my ($url,%form)=@_;
1469: push (@Apache::lonxml::ssi_info,{'url'=>$url,'form'=>\%form});
1470: return '';
1471: }
1472:
1473: sub do_registered_ssi {
1474: foreach my $info (@Apache::lonxml::ssi_info) {
1475: my %form=%{ $info->{'form'}};
1476: my $url=$info->{'url'};
1477: &Apache::lonnet::ssi($url,%form);
1478: }
1479: }
1480:
1481: sub add_script_result {
1482: my ($display) = @_;
1483: if ($display ne '') {
1484: push(@script_var_displays, $display);
1485: }
1486: }
1487:
1488: #
1489: # Afterburner handles anchors, highlights and links
1490: #
1491: sub afterburn {
1492: my $result=shift;
1493: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
1494: ['highlight','anchor','link']);
1495: if ($env{'form.highlight'}) {
1496: foreach (split(/\,/,$env{'form.highlight'})) {
1497: my $anchorname=$_;
1498: my $matchthis=$anchorname;
1499: $matchthis=~s/\_+/\\s\+/g;
1500: $result=~s/(\Q$matchthis\E)/\<font color=\"red\"\>$1\<\/font\>/gs;
1501: }
1502: }
1503: if ($env{'form.link'}) {
1504: foreach (split(/\,/,$env{'form.link'})) {
1505: my ($anchorname,$linkurl)=split(/\>/,$_);
1506: my $matchthis=$anchorname;
1507: $matchthis=~s/\_+/\\s\+/g;
1508: $result=~s/(\Q$matchthis\E)/\<a href=\"$linkurl\"\>$1\<\/a\>/gs;
1509: }
1510: }
1511: if ($env{'form.anchor'}) {
1512: my $anchorname=$env{'form.anchor'};
1513: my $matchthis=$anchorname;
1514: $matchthis=~s/\_+/\\s\+/g;
1515: $result=~s/(\Q$matchthis\E)/\<a name=\"$anchorname\"\>$1\<\/a\>/s;
1516: $result.=(<<"ENDSCRIPT");
1517: <script type="text/javascript">
1518: document.location.hash='$anchorname';
1519: </script>
1520: ENDSCRIPT
1521: }
1522: return $result;
1523: }
1524:
1525: sub storefile {
1526: my ($file,$contents)=@_;
1527: &Apache::lonnet::correct_line_ends(\$contents);
1528: if (my $fh=Apache::File->new('>'.$file)) {
1529: print $fh $contents;
1530: $fh->close();
1531: return 1;
1532: } else {
1533: &warning(&mt('Unable to save file [_1]','<tt>'.$file.'</tt>'));
1534: return 0;
1535: }
1536: }
1537:
1538: sub createnewhtml {
1539: my $title=&mt('Title of document goes here');
1540: my $body=&mt('Body of document goes here');
1541: my $filecontents=(<<SIMPLECONTENT);
1542: <html>
1543: <head>
1544: <title>$title</title>
1545: </head>
1546: <body bgcolor="#FFFFFF">
1547: $body
1548: </body>
1549: </html>
1550: SIMPLECONTENT
1551: return $filecontents;
1552: }
1553:
1554: sub createnewsty {
1555: my $filecontents=(<<SIMPLECONTENT);
1556: <definetag name="">
1557: <render>
1558: <web></web>
1559: <tex></tex>
1560: </render>
1561: </definetag>
1562: SIMPLECONTENT
1563: return $filecontents;
1564: }
1565:
1566: sub createnewjs {
1567: my $filecontents=(<<SIMPLECONTENT);
1568: <script type="text/javascript" language="Javascript">
1569:
1570: </script>
1571: SIMPLECONTENT
1572: return $filecontents;
1573: }
1574:
1575: sub verify_html {
1576: my ($filecontents)=@_;
1577: my ($is_html,$is_xml,$is_physnet);
1578: if ($filecontents =~/(?:\<|\<\;)\?xml[^\<]*\?(?:\>|\>\;)/is) {
1579: $is_xml = 1;
1580: } elsif ($filecontents =~/(?:\<|\<\;)html(?:\s+[^\<]+|\s*)(?:\>|\>\;)/is) {
1581: $is_html = 1;
1582: } elsif ($filecontents =~/(?:\<|\<\;)physnet[^\<]*(?:\>|\>\;)/is) {
1583: $is_physnet = 1;
1584: }
1585: unless ($is_xml || $is_html || $is_physnet) {
1586: return &mt('File does not have [_1] or [_2] starting tag','<html>','<?xml ?>');
1587: }
1588: if ($is_html) {
1589: if ($filecontents!~/(?:\<|\<\;)\/html(?:\>|\>\;)/is) {
1590: return &mt('File does not have [_1] ending tag','<html>');
1591: }
1592: if ($filecontents!~/(?:\<|\<\;)(?:body|frameset)[^\<]*(?:\>|\>\;)/is) {
1593: return &mt('File does not have [_1] or [_2] starting tag','<body>','<frameset>');
1594: }
1595: if ($filecontents!~/(?:\<|\<\;)\/(?:body|frameset)[^\<]*(?:\>|\>\;)/is) {
1596: return &mt('File does not have [_1] or [_2] ending tag','<body>','<frameset>');
1597: }
1598: }
1599: return '';
1600: }
1601:
1602: sub renderingoptions {
1603: my %langchoices=('' => '');
1604: foreach (&Apache::loncommon::languageids()) {
1605: if (&Apache::loncommon::supportedlanguagecode($_)) {
1606: $langchoices{&Apache::loncommon::supportedlanguagecode($_)}
1607: = &Apache::loncommon::plainlanguagedescription($_);
1608: }
1609: }
1610: my $output;
1611: unless ($env{'form.forceedit'}) {
1612: $output .=
1613: '<span class="LC_nobreak">'.
1614: &mt('Language:').' '.
1615: &Apache::loncommon::select_form(
1616: $env{'form.languages'},
1617: 'languages',
1618: {&Apache::lonlocal::texthash(%langchoices)}).
1619: '</span>';
1620: }
1621: $output .=
1622: ' <span class="LC_nobreak">'.
1623: &mt('Math Rendering:').' '.
1624: &Apache::loncommon::select_form(
1625: $env{'form.texengine'},
1626: 'texengine',
1627: {&Apache::lonlocal::texthash
1628: ('' => '',
1629: 'tth' => 'tth (TeX to HTML)',
1630: 'MathJax' => 'MathJax',
1631: 'mimetex' => 'mimetex (Convert to Images)')}).
1632: '</span>';
1633: return $output;
1634: }
1635:
1636: sub inserteditinfo {
1637: my ($filecontents,$filetype,$filename,$symb,$itemtitle,$folderpath,$uri,$action) = @_;
1638: $filecontents = &HTML::Entities::encode($filecontents,'<>&"');
1639: my $xml_help = '';
1640: my $initialize='';
1641: my $textarea_id = 'filecont';
1642: my ($dragmath_button,$deps_button,$context,$cnum,$cdom,$add_to_onload,
1643: $add_to_onresize,$init_dragmath);
1644: $initialize=&Apache::lonhtmlcommon::spellheader();
1645: if ($filetype eq 'html') {
1646: if ($env{'request.course.id'}) {
1647: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
1648: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
1649: if ($uri =~ m{^\Q/uploaded/$cdom/$cnum/portfolio/syllabus/\E}) {
1650: $context = 'syllabus';
1651: }
1652: }
1653: if (&Apache::lonhtmlcommon::htmlareabrowser()) {
1654: my $lang = &Apache::lonhtmlcommon::htmlarea_lang();
1655: my %textarea_args = (
1656: fullpage => 'true',
1657: dragmath => 'math',
1658: );
1659: $initialize .= &Apache::lonhtmlcommon::htmlareaselectactive(\%textarea_args);
1660: if ($context eq 'syllabus') {
1661: $init_dragmath = "editmath_visibility('filecont','none')";
1662: }
1663: }
1664: }
1665: $initialize .= (<<FULLPAGE);
1666: <script type="text/javascript">
1667: // <![CDATA[
1668: function initDocument() {
1669: resize_textarea('$textarea_id','LC_aftertextarea');
1670: $init_dragmath
1671: }
1672: // ]]>
1673: </script>
1674: FULLPAGE
1675: my $textareaclass;
1676: if ($filetype eq 'html') {
1677: if ($context eq 'syllabus') {
1678: $deps_button = &Apache::lonhtmlcommon::dependencies_button()."\n";
1679: $initialize .=
1680: &Apache::lonhtmlcommon::dependencycheck_js(undef,&mt('Syllabus'),
1681: $uri,undef,
1682: "/public/$cdom/$cnum/syllabus").
1683: "\n";
1684: if (&Apache::lonhtmlcommon::htmlareabrowser()) {
1685: $textareaclass = 'class="LC_richDefaultOn"';
1686: }
1687: } elsif ($symb || $folderpath) {
1688: $deps_button = &Apache::lonhtmlcommon::dependencies_button()."\n";
1689: $initialize .=
1690: &Apache::lonhtmlcommon::dependencycheck_js($symb,$itemtitle,
1691: undef,$folderpath,$uri)."\n";
1692: }
1693: $dragmath_button = '<span id="math_filecont">'.&Apache::lonhtmlcommon::dragmath_button('filecont',1).'</span>';
1694: $initialize .= "\n".&Apache::lonhtmlcommon::dragmath_js('EditMathPopup');
1695: }
1696: $add_to_onload = 'initDocument();';
1697: $add_to_onresize = "resize_textarea('$textarea_id','LC_aftertextarea');";
1698:
1699: if ($filetype eq 'html') {
1700: my $not_author;
1701: if ($uri =~ m{^/uploaded/}) {
1702: $not_author = 1;
1703: }
1704: $xml_help=&Apache::loncommon::helpLatexCheatsheet(undef,undef,$not_author);
1705: }
1706:
1707: my $titledisplay=&display_title();
1708: my %lt=&Apache::lonlocal::texthash('st' => 'Save and Edit',
1709: 'vi' => 'Save and View',
1710: 'dv' => 'Discard Edits and View',
1711: 'un' => 'undo',
1712: 'ed' => 'Edit');
1713: my $spelllink = &Apache::lonhtmlcommon::spelllink('xmledit','filecont');
1714: my $textarea_events = &Apache::edit::element_change_detection();
1715: my $form_events = &Apache::edit::form_change_detection();
1716: my $htmlerror;
1717: if ($filetype eq 'html') {
1718: $htmlerror=&verify_html($filecontents);
1719: if ($htmlerror) {
1720: $htmlerror='<span class="LC_error">'.$htmlerror.'</span>';
1721: }
1722: if (&Apache::lonhtmlcommon::htmlareabrowser()) {
1723: unless ($textareaclass) {
1724: $textareaclass = 'class="LC_richDefaultOff"';
1725: }
1726: }
1727: }
1728: my ($undo,%onclick);
1729: foreach my $item ('discard','undo','daxe') {
1730: $onclick{$item} = 'onclick="still_ask=true;setmode(this.form,'."'$item'".')"';
1731: }
1732: foreach my $item ('saveedit','saveview') {
1733: $onclick{$item} = 'onclick="is_submit=true;setmode(this.form,'."'$item'".')"';
1734: }
1735: unless ($uri =~ m{^/uploaded/}) {
1736: $undo = '<input type="button" name="Undo" accesskey="u" value="'.$lt{'un'}.'" '.
1737: $onclick{'undo'}.' />'."\n";
1738: }
1739: $initialize .= &setmode_javascript();
1740: my $editfooter=(<<ENDFOOTER);
1741: $initialize
1742: <a name="editsection" />
1743: <form $form_events method="post" name="xmledit" action="$action">
1744: <input type="hidden" name="problemmode" value="edit" />
1745: <div class="LC_edit_problem_editxml_header">
1746: <table class="LC_edit_problem_header_title"><tr><td>
1747: $filename
1748: </td><td align="right">
1749: $xml_help
1750: </td></tr>
1751: </table>
1752: <div style="float:right">
1753: <input type="button" name="savethisfile" accesskey="s" value="$lt{'st'}" $onclick{'saveedit'} />
1754: <input type="button" name="viewmode" accesskey="v" value="$lt{'vi'}" $onclick{'saveview'} />
1755: </div>
1756: <div>
1757: <input type="button" name="discardview" accesskey="d" value="$lt{'dv'}" $onclick{'discard'} />
1758: $undo $htmlerror $deps_button $dragmath_button
1759: </div>
1760: </div>
1761: <textarea $textarea_events style="width:100%" cols="80" rows="44" name="filecont" id="filecont" $textareaclass>$filecontents</textarea><br />$spelllink
1762: <div id="LC_aftertextarea">
1763: <br />
1764: $titledisplay
1765: </div>
1766: </form>
1767: ENDFOOTER
1768: return ($editfooter,$add_to_onload,$add_to_onresize);
1769: }
1770:
1771: sub setmode_javascript {
1772: return <<"ENDSCRIPT";
1773: <script type="text/javascript">
1774: // <![CDATA[
1775: function setmode(form,probmode) {
1776: var initial = form.problemmode.value;
1777: form.problemmode.value = probmode;
1778: form.submit();
1779: form.problemmode.value = initial;
1780: }
1781: // ]]>
1782: </script>
1783: ENDSCRIPT
1784: }
1785:
1786: sub seteditor_javascript {
1787: return <<"ENDSCRIPT";
1788: <script type="text/javascript">
1789: // <![CDATA[
1790: function seteditmode(form,editor) {
1791: form.editmode.value = editor;
1792: form.submit();
1793: }
1794: // ]]>
1795: </script>
1796: ENDSCRIPT
1797: }
1798:
1799: sub get_target {
1800: my $viewgrades=&Apache::lonnet::allowed('vgr',$env{'request.course.id'});
1801: if ( $env{'request.state'} eq 'published') {
1802: if ( defined($env{'form.grade_target'})
1803: && ($viewgrades == 'F' )) {
1804: return ($env{'form.grade_target'});
1805: } elsif (defined($env{'form.grade_target'})) {
1806: if (($env{'form.grade_target'} eq 'web') ||
1807: ($env{'form.grade_target'} eq 'tex') ) {
1808: return $env{'form.grade_target'}
1809: } else {
1810: return 'web';
1811: }
1812: } else {
1813: return 'web';
1814: }
1815: } elsif ($env{'request.state'} eq 'construct') {
1816: if ( defined($env{'form.grade_target'})) {
1817: return ($env{'form.grade_target'});
1818: } else {
1819: return 'web';
1820: }
1821: } else {
1822: return 'web';
1823: }
1824: }
1825:
1826: sub handler {
1827: my $request=shift;
1828:
1829: my $target=&get_target();
1830: $Apache::lonxml::debug=$env{'user.debug'};
1831:
1832: &Apache::loncommon::content_type($request,'text/html');
1833: &Apache::loncommon::no_cache($request);
1834: if ($env{'request.state'} eq 'published') {
1835: $request->set_last_modified(&Apache::lonnet::metadata($request->uri,
1836: 'lastrevisiondate'));
1837: }
1838: # Embedded Flash movies from Camtasia served from https will not display in IE
1839: # if XML config file has expired from cache.
1840: if ($ENV{'SERVER_PORT'} == 443) {
1841: if ($request->uri =~ /\.xml$/) {
1842: my ($httpbrowser,$clientbrowser) =
1843: &Apache::loncommon::decode_user_agent($request);
1844: if ($clientbrowser =~ /^explorer$/i) {
1845: delete $request->headers_out->{'Cache-control'};
1846: delete $request->headers_out->{'Pragma'};
1847: my $expiration = time + 60;
1848: my $date=strftime("%a, %d %b %Y %H:%M:%S GMT",gmtime($expiration));
1849: $request->headers_out->set("Expires" => $date);
1850: }
1851: }
1852: }
1853: $request->send_http_header;
1854:
1855: return OK if $request->header_only;
1856:
1857:
1858: my $file=&Apache::lonnet::filelocation("",$request->uri);
1859: my ($filetype,$breadcrumbtext);
1860: if ($file =~ /\.(sty|css|js|txt|tex)$/) {
1861: $filetype=$1;
1862: } else {
1863: $filetype='html';
1864: }
1865: unless ($env{'request.uri'}) {
1866: $env{'request.uri'}=$request->uri;
1867: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
1868: ['todocs']);
1869: }
1870: my ($cdom,$cnum);
1871: if ($env{'request.course.id'}) {
1872: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
1873: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
1874: if ($filetype eq 'html') {
1875: if ($request->uri =~ m{^\Q/uploaded/$cdom/$cnum/portfolio/syllabus/\E.+$}) {
1876: if (&Apache::lonnet::allowed('mdc',$env{'request.course.id'})) {
1877: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
1878: ['editmode']);
1879: }
1880: }
1881: }
1882: }
1883: if ($filetype eq 'sty') {
1884: $breadcrumbtext = 'Style File Editor';
1885: } elsif ($filetype eq 'js') {
1886: $breadcrumbtext = 'Javascript Editor';
1887: } elsif ($filetype eq 'css') {
1888: $breadcrumbtext = 'CSS Editor';
1889: } elsif ($filetype eq 'txt') {
1890: $breadcrumbtext = 'Text Editor';
1891: } elsif ($filetype eq 'tex') {
1892: $breadcrumbtext = 'TeX Editor';
1893: } else {
1894: $breadcrumbtext = 'HTML Editor';
1895: }
1896:
1897: #
1898: # Edit action? Save file.
1899: #
1900: if (!($env{'request.state'} eq 'published')) {
1901: if (($env{'form.problemmode'} eq 'saveedit') ||
1902: ($env{'form.problemmode'} eq 'saveview') ||
1903: ($env{'form.problemmode'} eq 'undo')) {
1904: my $html_file=&Apache::lonnet::getfile($file);
1905: my $error = &Apache::lonhomework::handle_save_or_undo($request, \$html_file, \$env{'form.filecont'});
1906: if ($env{'form.problemmode'} eq 'saveedit') {
1907: $env{'form.editmode'}='edit'; #force edit mode
1908: }
1909: }
1910: }
1911: my $inhibit_menu;
1912: my %mystyle;
1913: my $result = '';
1914: my $filecontents=&Apache::lonnet::getfile($file);
1915: if ($filecontents eq -1) {
1916: my $start_page=&Apache::loncommon::start_page('File Error');
1917: my $end_page=&Apache::loncommon::end_page();
1918: my $errormsg='<p class="LC_error">'
1919: .&mt('File not found: [_1]'
1920: ,'<span class="LC_filename">'.$file.'</span>')
1921: .'</p>';
1922: $result=(<<ENDNOTFOUND);
1923: $start_page
1924: $errormsg
1925: $end_page
1926: ENDNOTFOUND
1927: $filecontents='';
1928: if ($env{'request.state'} ne 'published') {
1929: if ($filetype eq 'sty') {
1930: $filecontents=&createnewsty();
1931: } elsif ($filetype eq 'js') {
1932: $filecontents=&createnewjs();
1933: } elsif ($filetype ne 'css' && $filetype ne 'txt' && $filetype ne 'tex') {
1934: $filecontents=&createnewhtml();
1935: }
1936: $env{'form.editmode'}='edit'; #force edit mode
1937: }
1938: } else {
1939: unless ($env{'request.state'} eq 'published') {
1940: if ($filecontents=~/BEGIN LON-CAPA Internal/) {
1941: &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.'));
1942: }
1943: #
1944: # we are in construction space, see if edit mode forced
1945: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
1946: ['editmode']);
1947: }
1948: if ((!$env{'form.editmode'}) ||
1949: ($env{'form.problemmode'} eq 'saveview') ||
1950: ($env{'form.problemmode'} eq 'discard')) {
1951: if ($filetype eq 'html' || $filetype eq 'sty') {
1952: &Apache::structuretags::reset_problem_globals();
1953: $result = &Apache::lonxml::xmlparse($request,$target,
1954: $filecontents,'',%mystyle);
1955: # .html files may contain <problem> or <Task> need to clean
1956: # up if it did
1957: &Apache::structuretags::reset_problem_globals();
1958: &Apache::lonhomework::finished_parsing();
1959: } elsif ($filetype eq 'tex') {
1960: $result = &Apache::lontexconvert::converted(\$filecontents,
1961: $env{'form.texengine'});
1962: if ($env{'form.return_only_error_and_warning_counts'}) {
1963: $result = "$errorcount:$warningcount";
1964: }
1965: } else {
1966: $result = $filecontents;
1967: }
1968: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
1969: ['rawmode']);
1970: if ($env{'form.rawmode'}) { $result = $filecontents; }
1971: if (($env{'request.state'} eq 'construct') &&
1972: (($filetype eq 'css') || ($filetype eq 'js')) && ($ENV{'HTTP_REFERER'})) {
1973: if ($ENV{'HTTP_REFERER'} =~ m{^https?\://[^\/]+/priv/$LONCAPA::match_domain/$LONCAPA::match_username/[^\?]+\.(x?html?|swf)(|\?)[^\?]*$}) {
1974: $inhibit_menu = 1;
1975: }
1976: }
1977: if (($filetype ne 'html') &&
1978: (!$env{'form.return_only_error_and_warning_counts'}) &&
1979: (!$inhibit_menu)) {
1980: my $nochgview = 1;
1981: my $controls = '';
1982: if ($env{'request.state'} eq 'construct') {
1983: $controls = &Apache::loncommon::head_subbox(
1984: &Apache::loncommon::CSTR_pageheader()
1985: .&Apache::londefdef::edit_controls($nochgview));
1986: }
1987: if ($filetype ne 'sty' && $filetype ne 'tex') {
1988: $result =~ s/</</g;
1989: $result =~ s/>/>/g;
1990: $result = '<table class="LC_sty_begin">'.
1991: '<tr><td><b><pre>'.$result.
1992: '</pre></b></td></tr></table>';
1993: }
1994: my $brcrum;
1995: if ($env{'request.state'} eq 'construct') {
1996: $brcrum = [{'href' => &Apache::loncommon::authorspace($request->uri),
1997: 'text' => 'Authoring Space'},
1998: {'href' => '',
1999: 'text' => $breadcrumbtext}];
2000: } else {
2001: $brcrum = ''; # FIXME: Where are we?
2002: }
2003: my %options = ('bread_crumbs' => $brcrum,
2004: 'bgcolor' => '#FFFFFF');
2005: $result =
2006: &Apache::loncommon::start_page(undef,undef,\%options)
2007: .$controls
2008: .$result
2009: .&Apache::loncommon::end_page();
2010: }
2011: }
2012: }
2013:
2014: #
2015: # Edit action? Insert editing commands
2016: #
2017: unless (($env{'request.state'} eq 'published') || ($inhibit_menu)) {
2018: if (($env{'form.editmode'}) &&
2019: (!($env{'form.problemmode'} eq 'saveview')) &&
2020: (!($env{'form.problemmode'} eq 'discard'))) {
2021: my ($displayfile,$url,$symb,$itemtitle,$action);
2022: $displayfile=$request->uri;
2023: if ($request->uri =~ m{^/uploaded/}) {
2024: if ($env{'request.course.id'}) {
2025: if ($request->uri =~ m{^\Q/uploaded/$cdom/$cnum/supplemental/\E}) {
2026: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
2027: ['folderpath','title']);
2028: } elsif ($request->uri =~ m{^\Q/uploaded/$cdom/$cnum/portfolio/syllabus/\E(.+)$}) {
2029: my $filename = $1;
2030: if ($1 eq 'loncapa.html') {
2031: $displayfile = &mt('Syllabus (minimal template)');
2032: $action = $request->uri.'?forceedit=1';
2033: } else {
2034: $displayfile = &mt('Syllabus file: [_1]',$1);
2035: }
2036: $itemtitle = &mt('Syllabus');
2037: }
2038: }
2039: unless ($itemtitle) {
2040: ($symb,$itemtitle,$displayfile) =
2041: &get_courseupload_hierarchy($request->uri,
2042: $env{'form.folderpath'},
2043: $env{'form.title'});
2044: }
2045: } else {
2046: $displayfile=~s/^\/[^\/]*//;
2047: }
2048:
2049: my ($edit_info, $add_to_onload, $add_to_onresize)=
2050: &inserteditinfo($filecontents,$filetype,$displayfile,$symb,
2051: $itemtitle,$env{'form.folderpath'},$request->uri,$action);
2052:
2053: my %options =
2054: ('add_entries' =>
2055: {'onresize' => $add_to_onresize,
2056: 'onload' => $add_to_onload, });
2057: my $header;
2058: if ($env{'request.state'} eq 'construct') {
2059: $options{'bread_crumbs'} = [{
2060: 'href' => &Apache::loncommon::authorspace($request->uri),
2061: 'text' => 'Authoring Space'},
2062: {'href' => '',
2063: 'text' => $breadcrumbtext}];
2064: $header = &Apache::loncommon::head_subbox(
2065: &Apache::loncommon::CSTR_pageheader());
2066: }
2067: my $js =
2068: &Apache::edit::js_change_detection().
2069: &Apache::loncommon::resize_textarea_js();
2070: my $start_page = &Apache::loncommon::start_page(undef,$js,
2071: \%options);
2072: $result = $start_page
2073: .$header
2074: .&Apache::lonxml::message_location()
2075: .$edit_info
2076: .&Apache::loncommon::end_page();
2077: }
2078: }
2079: if ($filetype eq 'html') { &writeallows($request->uri); }
2080:
2081: &Apache::lonxml::add_messages(\$result);
2082: $request->print($result);
2083:
2084: return OK;
2085: }
2086:
2087: sub display_title {
2088: my $result;
2089: if ($env{'request.state'} eq 'construct') {
2090: my $title=&Apache::lonnet::gettitle();
2091: if (!defined($title) || $title eq '') {
2092: $title = $env{'request.filename'};
2093: $title = substr($title, rindex($title, '/') + 1);
2094: }
2095: $result = "<script type='text/javascript'>top.document.title = '$title - LON-CAPA "
2096: .&mt('Authoring Space')."';</script>";
2097: }
2098: return $result;
2099: }
2100:
2101: sub get_courseupload_hierarchy {
2102: my ($url,$folderpath,$title) = @_;
2103: my ($symb,$itemtitle,$displaypath);
2104: if ($env{'request.course.id'}) {
2105: if ($folderpath =~ /^supplemental/) {
2106: my @folders = split(/\&/,$folderpath);
2107: my @pathitems;
2108: while (@folders) {
2109: my $folder=shift(@folders);
2110: my $foldername=shift(@folders);
2111: $foldername =~ s/\:(\d*)\:(\w*)\:(\w*):(\d*)\:?(\d*)$//;
2112: push(@pathitems,&unescape($foldername));
2113: }
2114: if ($title) {
2115: push(@pathitems,&unescape($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: $$msg=~s/__LONCAPA_INTERNAL_MESSAGE_LOCATION__//g;
2284: }
2285:
2286: sub get_param {
2287: my ($param,$parstack,$safeeval,$context,$case_insensitive, $noelide) = @_;
2288: if ( ! $context ) { $context = -1; }
2289: my $args ='';
2290: if ( $#$parstack > (-2-$context) ) { $args=$$parstack[$context]; }
2291: if ( ! $Apache::lonxml::usestyle ) {
2292: $args=$Apache::lonxml::style_values.$args;
2293: }
2294:
2295: if ($noelide) {
2296: $args =~ s/'\$/'\\\$/g;
2297: }
2298:
2299: if ( ! $args ) { return undef; }
2300: if ( $case_insensitive ) {
2301: if ($args =~ s/(my (?:.*))(\$\Q$param\E[,\)])/$1.lc($2)/ei) {
2302: return &Apache::run::run("{$args;".'return $'.$param.'}',
2303: $safeeval); #'
2304: } else {
2305: return undef;
2306: }
2307: } else {
2308: if ( $args =~ /my .*\$\Q$param\E[,\)]/ ) {
2309: return &Apache::run::run("{$args;".'return $'.$param.'}',
2310: $safeeval); #'
2311: } else {
2312: return undef;
2313: }
2314: }
2315: }
2316:
2317: sub get_param_var {
2318: my ($param,$parstack,$safeeval,$context,$case_insensitive) = @_;
2319: if ( ! $context ) { $context = -1; }
2320: my $args ='';
2321: if ( $#$parstack > (-2-$context) ) { $args=$$parstack[$context]; }
2322: if ( ! $Apache::lonxml::usestyle ) {
2323: $args=$Apache::lonxml::style_values.$args;
2324: }
2325: &Apache::lonxml::debug("Args are $args param is $param");
2326: if ($case_insensitive) {
2327: if (! ($args=~s/(my (?:.*))(\$\Q$param\E[,\)])/$1.lc($2)/ei)) {
2328: return undef;
2329: }
2330: } elsif ( $args !~ /my .*\$\Q$param\E[,\)]/ ) { return undef; }
2331: my $value=&Apache::run::run("{$args;".'return $'.$param.'}',$safeeval); #'
2332: &Apache::lonxml::debug("first run is $value");
2333: if ($value =~ /^[\$\@\%][a-zA-Z_]\w*$/) {
2334: &Apache::lonxml::debug("doing second");
2335: my @result=&Apache::run::run("return $value",$safeeval,1);
2336: if (!defined($result[0])) {
2337: return $value
2338: } else {
2339: if (wantarray) { return @result; } else { return $result[0]; }
2340: }
2341: } else {
2342: return $value;
2343: }
2344: }
2345:
2346: sub register_insert_xml {
2347: my $parser = HTML::LCParser->new($Apache::lonnet::perlvar{'lonTabDir'}
2348: .'/insertlist.xml');
2349: my ($tagnum,$in_help)=(0,0);
2350: my @alltags;
2351: my $tag;
2352: while (my $token = $parser->get_token()) {
2353: if ($token->[0] eq 'S') {
2354: my $key;
2355: if ($token->[1] eq 'tag') {
2356: $tag = $token->[2]{'name'};
2357: if (defined($tag)) {
2358: $insertlist{$tagnum.'.tag'} = $tag;
2359: $insertlist{$tag.'.num'} = $tagnum;
2360: push(@alltags,$tag);
2361: }
2362: } elsif ($in_help && $token->[1] eq 'file') {
2363: $key = $tag.'.helpfile';
2364: } elsif ($in_help && $token->[1] eq 'description') {
2365: $key = $tag.'.helpdesc';
2366: } elsif ($token->[1] eq 'description' ||
2367: $token->[1] eq 'color' ||
2368: $token->[1] eq 'show' ) {
2369: $key = $tag.'.'.$token->[1];
2370: } elsif ($token->[1] eq 'insert_sub') {
2371: $key = $tag.'.function';
2372: } elsif ($token->[1] eq 'help') {
2373: $in_help=1;
2374: } elsif ($token->[1] eq 'allow') {
2375: $key = $tag.'.allow';
2376: }
2377: if (defined($key)) {
2378: $insertlist{$key} = $parser->get_text();
2379: $insertlist{$key} =~ s/(^\s*|\s*$ )//gx;
2380: }
2381: } elsif ($token->[0] eq 'E') {
2382: if ($token->[1] eq 'tag') {
2383: undef($tag);
2384: $tagnum++;
2385: } elsif ($token->[1] eq 'help') {
2386: undef($in_help);
2387: }
2388: }
2389: }
2390:
2391: # parse the allows and ignore tags set to <show>no</show>
2392: foreach my $tag (@alltags) {
2393: next if (!exists($insertlist{$tag.'.allow'}));
2394: my $allow = $insertlist{$tag.'.allow'};
2395: foreach my $element (split(',',$allow)) {
2396: $element =~ s/(^\s*|\s*$ )//gx;
2397: if (!exists($insertlist{$element.'.show'})
2398: || $insertlist{$element.'.show'} ne 'no') {
2399: push(@{ $insertlist{$tag.'.which'} },$element);
2400: }
2401: }
2402: }
2403: }
2404:
2405: sub register_insert {
2406: return ®ister_insert_xml(@_);
2407: # &dump_insertlist('2');
2408: }
2409:
2410: sub dump_insertlist {
2411: my ($ext) = @_;
2412: open(XML,">","/tmp/insertlist.xml.$ext");
2413: print XML ("<insertlist>");
2414: my $i=0;
2415:
2416: while (exists($insertlist{"$i.tag"})) {
2417: my $tag = $insertlist{"$i.tag"};
2418: print XML ("
2419: \t<tag name=\"$tag\">");
2420: if (defined($insertlist{"$tag.description"})) {
2421: print XML ("
2422: \t\t<description>".$insertlist{"$tag.description"}."</description>");
2423: }
2424: if (defined($insertlist{"$tag.color"})) {
2425: print XML ("
2426: \t\t<color>".$insertlist{"$tag.color"}."</color>");
2427: }
2428: if (defined($insertlist{"$tag.function"})) {
2429: print XML ("
2430: \t\t<insert_sub>".$insertlist{"$tag.function"}."</insert_sub>");
2431: }
2432: if (defined($insertlist{"$tag.show"})
2433: && $insertlist{"$tag.show"} ne 'yes') {
2434: print XML ("
2435: \t\t<show>".$insertlist{"$tag.show"}."</show>");
2436: }
2437: if (defined($insertlist{"$tag.helpfile"})) {
2438: print XML ("
2439: \t\t<help>
2440: \t\t\t<file>".$insertlist{"$tag.helpfile"}."</file>");
2441: if ($insertlist{"$tag.helpdesc"} ne '') {
2442: print XML ("
2443: \t\t\t<description>".$insertlist{"$tag.helpdesc"}."</description>");
2444: }
2445: print XML ("
2446: \t\t</help>");
2447: }
2448: if (defined($insertlist{"$tag.which"})) {
2449: print XML ("
2450: \t\t<allow>".join(',',sort(@{ $insertlist{"$tag.which"} }))."</allow>");
2451: }
2452: print XML ("
2453: \t</tag>");
2454: $i++;
2455: }
2456: print XML ("\n</insertlist>\n");
2457: close(XML);
2458: }
2459:
2460: sub description {
2461: my ($token)=@_;
2462: my $tag = &get_tag($token);
2463: return $insertlist{$tag.'.description'};
2464: }
2465:
2466: # Returns a list containing the help file, and the description
2467: sub helpinfo {
2468: my ($token)=@_;
2469: my $tag = &get_tag($token);
2470: return ($insertlist{$tag.'.helpfile'}, &mt($insertlist{$tag.'.helpdesc'}));
2471: }
2472:
2473: sub get_tag {
2474: my ($token)=@_;
2475: my $tagnum;
2476: my $tag=$token->[1];
2477: foreach my $namespace (reverse(@Apache::lonxml::namespace)) {
2478: my $testtag = $namespace.'::'.$tag;
2479: $tagnum = $insertlist{"$testtag.num"};
2480: last if (defined($tagnum));
2481: }
2482: if (!defined($tagnum)) {
2483: $tagnum = $Apache::lonxml::insertlist{"$tag.num"};
2484: }
2485: return $insertlist{"$tagnum.tag"};
2486: }
2487:
2488: ############################################################
2489: # PDF-FORM-METHODS
2490:
2491: =pod
2492:
2493: =item &print_pdf_radiobutton(fieldname, value)
2494:
2495: Returns a latexline to generate a PDF-Form-Radiobutton.
2496: Note: Radiobuttons with equal names are automaticly grouped
2497: in a selection-group.
2498:
2499: $fieldname: PDF internalname of the radiobutton(group)
2500: $value: Value of radiobutton
2501:
2502: =cut
2503: sub print_pdf_radiobutton {
2504: my ($fieldname, $value) = @_;
2505: return '\radioButton[\symbolchoice{circle}]{'
2506: .$fieldname.'}{10bp}{10bp}{'.$value.'}';
2507: }
2508:
2509:
2510: =pod
2511:
2512: =item &print_pdf_start_combobox(fieldname)
2513:
2514: Starts a latexline to generate a PDF-Form-Combobox with text.
2515:
2516: $fieldname: PDF internal name of the Combobox
2517:
2518: =cut
2519: sub print_pdf_start_combobox {
2520: my $result;
2521: my ($fieldName) = @_;
2522: $result .= '\begin{tabularx}{\textwidth}{p{2.5cm}X}'."\n";
2523: $result .= '\comboBox[]{'.$fieldName.'}{2.3cm}{14bp}{'; #
2524:
2525: return $result;
2526: }
2527:
2528:
2529: =pod
2530:
2531: =item &print_pdf_add_combobox_option(options)
2532:
2533: Generates a latexline to add Options to a PDF-Form-ComboBox.
2534:
2535: $option: PDF internal name of the Combobox-Option
2536:
2537: =cut
2538: sub print_pdf_add_combobox_option {
2539:
2540: my $result;
2541: my ($option) = @_;
2542:
2543: $result .= '('.$option.')';
2544:
2545: return $result;
2546: }
2547:
2548:
2549: =pod
2550:
2551: =item &print_pdf_end_combobox(text) {
2552:
2553: Returns latexcode to end a PDF-Form-Combobox with text.
2554:
2555: =cut
2556: sub print_pdf_end_combobox {
2557: my $result;
2558: my ($text) = @_;
2559:
2560: $result .= '}&'.$text."\\\\\n";
2561: $result .= '\end{tabularx}' . "\n";
2562: $result .= '\hspace{2mm}' . "\n";
2563: return $result;
2564: }
2565:
2566:
2567: =pod
2568:
2569: =item &print_pdf_hiddenField(fieldname, user, domain)
2570:
2571: Returns a latexline to generate a PDF-Form-hiddenField with userdata.
2572:
2573: $fieldname label for hiddentextfield
2574: $user: name of user
2575: $domain: domain of user
2576:
2577: =cut
2578: sub print_pdf_hiddenfield {
2579: my $result;
2580: my ($fieldname, $user, $domain) = @_;
2581:
2582: $result .= '\textField [\F{\FHidden}\F{-\FPrint}\V{'.$domain.'&'.$user.'}]{'.$fieldname.'}{0in}{0in}'."\n";
2583:
2584: return $result;
2585: }
2586:
2587: 1;
2588: __END__
2589:
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