1: # The LearningOnline Network with CAPA
2: # XML Parser Module
3: #
4: # $Id: lonxml.pm,v 1.531.2.19 2015/04/06 17:02:33 raeburn Exp $
5: #
6: # Copyright Michigan State University Board of Trustees
7: #
8: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
9: #
10: # LON-CAPA is free software; you can redistribute it and/or modify
11: # it under the terms of the GNU General Public License as published by
12: # the Free Software Foundation; either version 2 of the License, or
13: # (at your option) any later version.
14: #
15: # LON-CAPA is distributed in the hope that it will be useful,
16: # but WITHOUT ANY WARRANTY; without even the implied warranty of
17: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18: # GNU General Public License for more details.
19: #
20: # You should have received a copy of the GNU General Public License
21: # along with LON-CAPA; if not, write to the Free Software
22: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23: #
24: # /home/httpd/html/adm/gpl.txt
25: #
26: # http://www.lon-capa.org/
27: #
28: # Copyright for TtHfunc and TtMfunc by Ian Hutchinson.
29: # TtHfunc and TtMfunc (the "Code") may be compiled and linked into
30: # binary executable programs or libraries distributed by the
31: # Michigan State University (the "Licensee"), but any binaries so
32: # distributed are hereby licensed only for use in the context
33: # of a program or computational system for which the Licensee is the
34: # primary author or distributor, and which performs substantial
35: # additional tasks beyond the translation of (La)TeX into HTML.
36: # The C source of the Code may not be distributed by the Licensee
37: # to any other parties under any circumstances.
38: #
39:
40: =pod
41:
42: =head1 NAME
43:
44: Apache::lonxml
45:
46: =head1 SYNOPSIS
47:
48: XML Parsing Module
49:
50: This is part of the LearningOnline Network with CAPA project
51: described at http://www.lon-capa.org.
52:
53:
54: =head1 SUBROUTINES
55:
56: =cut
57:
58:
59:
60: package Apache::lonxml;
61: use vars
62: qw(@pwd @outputstack $redirection $import @extlinks $metamode $evaluate %insertlist @namespace $errorcount $warningcount);
63: use strict;
64: use LONCAPA;
65: use HTML::LCParser();
66: use HTML::TreeBuilder();
67: use HTML::Entities();
68: use Safe();
69: use Safe::Hole();
70: use Math::Cephes();
71: use Math::Random();
72: use Opcode();
73: use POSIX qw(strftime);
74: use Time::HiRes qw( gettimeofday tv_interval );
75: use Symbol();
76:
77: sub register {
78: my ($space,@taglist) = @_;
79: foreach my $temptag (@taglist) {
80: push(@{ $Apache::lonxml::alltags{$temptag} },$space);
81: }
82: }
83:
84: sub deregister {
85: my ($space,@taglist) = @_;
86: foreach my $temptag (@taglist) {
87: my $tempspace = $Apache::lonxml::alltags{$temptag}[-1];
88: if ($tempspace eq $space) {
89: pop(@{ $Apache::lonxml::alltags{$temptag} });
90: }
91: }
92: #&printalltags();
93: }
94:
95: use Apache::Constants qw(:common);
96: use Apache::lontexconvert();
97: use Apache::style();
98: use Apache::run();
99: use Apache::londefdef();
100: use Apache::scripttag();
101: use Apache::languagetags();
102: use Apache::edit();
103: use Apache::inputtags();
104: use Apache::outputtags();
105: use Apache::lonnet;
106: use Apache::File();
107: use Apache::loncommon();
108: use Apache::lonfeedback();
109: use Apache::lonmsg();
110: use Apache::loncacc();
111: use Apache::lonmaxima();
112: use Apache::lonr();
113: use Apache::lonlocal;
114: use Apache::lonhtmlcommon();
115: use Apache::functionplotresponse();
116: use Apache::lonnavmaps();
117:
118: #==================================== Main subroutine: xmlparse
119:
120: #debugging control, to turn on debugging modify the correct handler
121:
122: $Apache::lonxml::debug=0;
123:
124: # keeps count of the number of warnings and errors generated in a parse
125: $warningcount=0;
126: $errorcount=0;
127:
128: #path to the directory containing the file currently being processed
129: @pwd=();
130:
131: #these two are used for capturing a subset of the output for later processing,
132: #don't touch them directly use &startredirection and &endredirection
133: @outputstack = ();
134: $redirection = 0;
135:
136: #controls wheter the <import> tag actually does
137: $import = 1;
138: @extlinks=();
139:
140: # meta mode is a bit weird only some output is to be turned off
141: #<output> tag turns metamode off (defined in londefdef.pm)
142: $metamode = 0;
143:
144: # turns on and of run::evaluate actually derefencing var refs
145: $evaluate = 1;
146:
147: # data structure for edit mode, determines what tags can go into what other tags
148: %insertlist=();
149:
150: # stores the list of active tag namespaces
151: @namespace=();
152:
153: # stores all Scrit Vars displays for later showing
154: my @script_var_displays=();
155:
156: # a pointer the the Apache request object
157: $Apache::lonxml::request='';
158:
159: # a problem number counter, and check on ether it is used
160: $Apache::lonxml::counter=1;
161: $Apache::lonxml::counter_changed=0;
162:
163: # Part counter hash. In analysis mode, the
164: # problems can use this to record which parts increment the counter
165: # by how much. The counter subs will maintain this hash via
166: # their optional part parameters. Note that the assumption is that
167: # analysis is done in one request and therefore it is not necessary to
168: # save this information request-to-request.
169:
170:
171: %Apache::lonxml::counters_per_part = ();
172:
173: #internal check on whether to look at style defs
174: $Apache::lonxml::usestyle=1;
175:
176: #locations used to store the parameter string for style substitutions
177: $Apache::lonxml::style_values='';
178: $Apache::lonxml::style_end_values='';
179:
180: #array of ssi calls that need to occur after we are done parsing
181: @Apache::lonxml::ssi_info=();
182:
183: #should we do the postag variable interpolation
184: $Apache::lonxml::post_evaluate=1;
185:
186: #a header message to emit in the case of any generated warning or errors
187: $Apache::lonxml::warnings_error_header='';
188:
189: # Control whether or not LaTeX symbols should be substituted for their
190: # \ style equivalents...this may be turned off e.g. in an verbatim
191: # environment.
192:
193: $Apache::lonxml::substitute_LaTeX_symbols = 1; # Starts out on.
194:
195: sub enable_LaTeX_substitutions {
196: $Apache::lonxml::substitute_LaTeX_symbols = 1;
197: }
198: sub disable_LaTeX_substitutions {
199: $Apache::lonxml::substitute_LaTeX_symbols = 0;
200: }
201:
202: sub xmlend {
203: my ($target,$parser)=@_;
204: my $mode='xml';
205: my $status='OPEN';
206: if ($Apache::lonhomework::parsing_a_problem ||
207: $Apache::lonhomework::parsing_a_task ) {
208: $mode='problem';
209: $status=$Apache::inputtags::status[-1];
210: }
211: my $discussion;
212: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
213: ['LONCAPA_INTERNAL_no_discussion']);
214: if (
215: ( (!exists($env{'form.LONCAPA_INTERNAL_no_discussion'}))
216: || ($env{'form.LONCAPA_INTERNAL_no_discussion'} ne 'true')
217: )
218: && ($env{'form.inhibitmenu'} ne 'yes')
219: ) {
220: $discussion=&Apache::lonfeedback::list_discussion($mode,$status);
221: }
222: if ($target eq 'tex') {
223: $discussion.='<tex>\keephidden{ENDOFPROBLEM}\vskip 0.5mm\noindent\makebox[\textwidth/$number_of_columns][b]{\hrulefill}\end{document}</tex>';
224: &Apache::lonxml::newparser($parser,\$discussion,'');
225: return '';
226: }
227:
228: return $discussion;
229: }
230:
231: sub tokeninputfield {
232: my $defhost=$Apache::lonnet::perlvar{'lonHostID'};
233: $defhost=~tr/a-z/A-Z/;
234: return (<<ENDINPUTFIELD)
235: <script type="text/javascript">
236: function updatetoken() {
237: var comp=new Array;
238: var barcode=unescape(document.tokeninput.barcode.value);
239: comp=barcode.split('*');
240: if (typeof(comp[0])!="undefined") {
241: document.tokeninput.codeone.value=comp[0];
242: }
243: if (typeof(comp[1])!="undefined") {
244: document.tokeninput.codetwo.value=comp[1];
245: }
246: if (typeof(comp[2])!="undefined") {
247: comp[2]=comp[2].toUpperCase();
248: document.tokeninput.codethree.value=comp[2];
249: }
250: document.tokeninput.barcode.value='';
251: }
252: </script>
253: <form method="post" name="tokeninput" action="">
254: <table border="2" bgcolor="#FFFFBB">
255: <tr><th>DocID Checkin</th></tr>
256: <tr><td>
257: <table>
258: <tr>
259: <td>Scan in Barcode</td>
260: <td><input type="text" size="22" name="barcode"
261: onchange="updatetoken()"/></td>
262: </tr>
263: <tr><td><i>or</i> Type in DocID</td>
264: <td>
265: <input type="text" size="5" name="codeone" />
266: <b><font size="+2">*</font></b>
267: <input type="text" size="5" name="codetwo" />
268: <b><font size="+2">*</font></b>
269: <input type="text" size="10" name="codethree" value="$defhost"
270: onchange="this.value=this.value.toUpperCase()" />
271: </td></tr>
272: </table>
273: </td></tr>
274: <tr><td><input type="submit" value="Check in DocID" /></td></tr>
275: </table>
276: </form>
277: ENDINPUTFIELD
278: }
279:
280: sub maketoken {
281: my ($symb,$tuname,$tudom,$tcrsid)=@_;
282: unless ($symb) {
283: $symb=&Apache::lonnet::symbread();
284: }
285: unless ($tuname) {
286: $tuname=$env{'user.name'};
287: $tudom=$env{'user.domain'};
288: $tcrsid=$env{'request.course.id'};
289: }
290: return &Apache::lonnet::checkout($symb,$tuname,$tudom,$tcrsid);
291: }
292:
293: sub printtokenheader {
294: my ($target,$token,$tsymb,$tcrsid,$tudom,$tuname)=@_;
295: unless ($token) { return ''; }
296:
297: my ($symb,$courseid,$domain,$name) = &Apache::lonnet::whichuser();
298: unless ($tsymb) {
299: $tsymb=$symb;
300: }
301: unless ($tuname) {
302: $tuname=$name;
303: $tudom=$domain;
304: $tcrsid=$courseid;
305: }
306:
307: my $plainname=&Apache::loncommon::plainname($tuname,$tudom);
308:
309: if ($target eq 'web') {
310: my %idhash=&Apache::lonnet::idrget($tudom,($tuname));
311: return
312: '<img align="right" src="/cgi-bin/barcode.png?encode='.$token.'" />'.
313: &mt('Checked out for').' '.$plainname.
314: '<br />'.&mt('User').': '.$tuname.' at '.$tudom.
315: '<br />'.&mt('ID').': '.$idhash{$tuname}.
316: '<br />'.&mt('CourseID').': '.$tcrsid.
317: '<br />'.&mt('Course').': '.$env{'course.'.$tcrsid.'.description'}.
318: '<br />'.&mt('DocID').': '.$token.
319: '<br />'.&mt('Time').': '.&Apache::lonlocal::locallocaltime().'<hr />';
320: } else {
321: return $token;
322: }
323: }
324:
325: sub printalltags {
326: my $temp;
327: foreach $temp (sort keys %Apache::lonxml::alltags) {
328: &Apache::lonxml::debug("$temp -- ".
329: join(',',@{ $Apache::lonxml::alltags{$temp} }));
330: }
331: }
332:
333: sub xmlparse {
334: my ($request,$target,$content_file_string,$safeinit,%style_for_target) = @_;
335:
336: &setup_globals($request,$target);
337: &Apache::inputtags::initialize_inputtags();
338: &Apache::bridgetask::initialize_bridgetask();
339: &Apache::outputtags::initialize_outputtags();
340: &Apache::edit::initialize_edit();
341: &Apache::londefdef::initialize_londefdef();
342:
343: #
344: # do we have a course style file?
345: #
346:
347: if ($env{'request.course.id'} && $env{'request.state'} ne 'construct') {
348: my $bodytext=
349: $env{'course.'.$env{'request.course.id'}.'.default_xml_style'};
350: if ($bodytext) {
351: foreach my $file (split(',',$bodytext)) {
352: my $location=&Apache::lonnet::filelocation('',$file);
353: my $styletext=&Apache::lonnet::getfile($location);
354: if ($styletext ne '-1') {
355: %style_for_target = (%style_for_target,
356: &Apache::style::styleparser($target,$styletext));
357: }
358: }
359: }
360: } elsif ($env{'construct.style'}
361: && ($env{'request.state'} eq 'construct')) {
362: my $location=&Apache::lonnet::filelocation('',$env{'construct.style'});
363: my $styletext=&Apache::lonnet::getfile($location);
364: if ($styletext ne '-1') {
365: %style_for_target = (%style_for_target,
366: &Apache::style::styleparser($target,$styletext));
367: }
368: }
369: #&printalltags();
370: my @pars = ();
371: my $pwd=$env{'request.filename'};
372: $pwd =~ s:/[^/]*$::;
373: &newparser(\@pars,\$content_file_string,$pwd);
374:
375: my $safeeval = new Safe;
376: my $safehole = new Safe::Hole;
377: &init_safespace($target,$safeeval,$safehole,$safeinit);
378: #-------------------- Redefinition of the target in the case of compound target
379:
380: ($target, my @tenta) = split('&&',$target);
381:
382: my @stack = ();
383: my @parstack = ();
384: &initdepth();
385: &init_alarm();
386: my $finaloutput = &inner_xmlparse($target,\@stack,\@parstack,\@pars,
387: $safeeval,\%style_for_target,1);
388:
389: if (@stack) {
390: &warning(&mt('At end of file some tags were still left unclosed:').
391: ' <tt><'.join('></tt>, <tt><',reverse(@stack)).
392: '></tt>');
393: }
394: if ($env{'request.uri'}) {
395: &writeallows($env{'request.uri'});
396: }
397: &do_registered_ssi();
398: if ($Apache::lonxml::counter_changed) { &store_counter() }
399:
400: &clean_safespace($safeeval);
401:
402: if (@script_var_displays) {
403: if ($finaloutput =~ m{</body>\s*</html>\s*$}s) {
404: my $scriptoutput = join('',@script_var_displays);
405: $finaloutput=~s{(</body>\s*</html>)\s*$}{$scriptoutput$1}s;
406: } else {
407: $finaloutput .= join('',@script_var_displays);
408: }
409: undef(@script_var_displays);
410: }
411: &init_state();
412: if ($env{'form.return_only_error_and_warning_counts'}) {
413: if ($env{'request.filename'}=~/\.(html|htm|xml)$/i) {
414: my $error=&verify_html($content_file_string);
415: if ($error) { $errorcount++; }
416: }
417: return "$errorcount:$warningcount";
418: }
419: return $finaloutput;
420: }
421:
422: sub latex_special_symbols {
423: my ($string,$where)=@_;
424: #
425: # If e.g. in verbatim mode, then don't substitute.
426: # but return original string.
427: #
428: if (!($Apache::lonxml::substitute_LaTeX_symbols)) {
429: return $string;
430: }
431: if ($where eq 'header') {
432: $string =~ s/\\/\$\\backslash\$/g; # \ -> $\backslash$ per LaTex line by line pg 10.
433: $string =~ s/(\$|%|\{|\})/\\$1/g;
434: $string=&Apache::lonprintout::character_chart($string);
435: # any & or # leftover should be safe to just escape
436: $string=~s/([^\\])\&/$1\\\&/g;
437: $string=~s/([^\\])\#/$1\\\#/g;
438: $string =~ s/_/\\_/g; # _ -> \_
439: $string =~ s/\^/\\\^{}/g; # ^ -> \^{}
440: } else {
441: $string=~s/\\/\\ensuremath{\\backslash}/g;
442: $string=~s/\\\%|\%/\\\%/g;
443: $string=~s/\\{|{/\\{/g;
444: $string=~s/\\}|}/\\}/g;
445: $string=~s/\\ensuremath\\{\\backslash\\}/\\ensuremath{\\backslash}/g;
446: $string=~s/\\\$|\$/\\\$/g;
447: $string=~s/\\\_|\_/\\\_/g;
448: $string=~s/([^\\]|^)(\~|\^)/$1\\$2\\strut /g;
449: $string=~s/(>|<)/\\ensuremath\{$1\}/g; #more or less
450: $string=&Apache::lonprintout::character_chart($string);
451: # any & or # leftover should be safe to just escape
452: $string=~s/\\\&|\&/\\\&/g;
453: $string=~s/\\\#|\#/\\\#/g;
454: $string=~s/\|/\$\\mid\$/g;
455: #single { or } How to escape?
456: }
457: return $string;
458: }
459:
460: sub inner_xmlparse {
461: my ($target,$stack,$parstack,$pars,$safeeval,$style_for_target,$start)=@_;
462: my $finaloutput = '';
463: my $result;
464: my $token;
465: my $dontpop=0;
466: my $lastdontpop;
467: my $lastendtag;
468: my $startredirection = $Apache::lonxml::redirection;
469: while ( $#$pars > -1 ) {
470: while ($token = $$pars['-1']->get_token) {
471: if (($token->[0] eq 'T') || ($token->[0] eq 'C') ) {
472: if ($metamode<1) {
473: my $text=$token->[1];
474: if ($token->[0] eq 'C' && $target eq 'tex') {
475: $text = '';
476: # $text = '%'.$text."\n";
477: }
478: $result.=$text;
479: }
480: } elsif (($token->[0] eq 'D')) {
481: if ($metamode<1 && $target eq 'web') {
482: my $text=$token->[1];
483: $result.=$text;
484: }
485: } elsif ($token->[0] eq 'PI') {
486: if ($metamode<1 && $target eq 'web') {
487: $result=$token->[2];
488: }
489: } elsif ($token->[0] eq 'S') {
490: # add tag to stack
491: push (@$stack,$token->[1]);
492: # add parameters list to another stack
493: push (@$parstack,&parstring($token));
494: &increasedepth($token);
495: if ($Apache::lonxml::usestyle &&
496: exists($$style_for_target{$token->[1]})) {
497: $Apache::lonxml::usestyle=0;
498: my $string=$$style_for_target{$token->[1]}.
499: '<LONCAPA_INTERNAL_TURN_STYLE_ON />';
500: &Apache::lonxml::newparser($pars,\$string);
501: $Apache::lonxml::style_values=$$parstack[-1];
502: $Apache::lonxml::style_end_values=$$parstack[-1];
503: } else {
504: $result = &callsub("start_$token->[1]", $target, $token, $stack,
505: $parstack, $pars, $safeeval, $style_for_target);
506: }
507: } elsif ($token->[0] eq 'E') {
508: if ($Apache::lonxml::usestyle &&
509: exists($$style_for_target{'/'."$token->[1]"})) {
510: $Apache::lonxml::usestyle=0;
511: my $string=$$style_for_target{'/'.$token->[1]}.
512: '<LONCAPA_INTERNAL_TURN_STYLE_ON end="'.$token->[1].'" />';
513: &Apache::lonxml::newparser($pars,\$string);
514: $Apache::lonxml::style_values=$Apache::lonxml::style_end_values;
515: $Apache::lonxml::style_end_values='';
516: $dontpop=1;
517: } else {
518: #clear out any tags that didn't end
519: while ($token->[1] ne $$stack['-1'] && ($#$stack > -1)) {
520: my $lasttag=$$stack[-1];
521: if ($token->[1] =~ /^\Q$lasttag\E$/i) {
522: &Apache::lonxml::warning(&mt('Using tag [_1] on line [_2] as end tag to [_3]','</'.$token->[1].'>','.$token->[3].','<'.$$stack[-1].'>'));
523: last;
524: } else {
525: &Apache::lonxml::warning(&mt('Found tag [_1] on line [_2] when looking for [_3] in file.','</'.$token->[1].'>',$token->[3],'</'.$$stack[-1].'>'));
526: &end_tag($stack,$parstack,$token);
527: }
528: }
529: $result = &callsub("end_$token->[1]", $target, $token, $stack,
530: $parstack, $pars,$safeeval, $style_for_target);
531: }
532: } else {
533: &Apache::lonxml::error("Unknown token event :$token->[0]:$token->[1]:");
534: }
535: #evaluate variable refs in result
536: if ($Apache::lonxml::post_evaluate &&$result ne "") {
537: my $extras;
538: if (!$Apache::lonxml::usestyle) {
539: $extras=$Apache::lonxml::style_values;
540: }
541: if ( $#$parstack > -1 ) {
542: $result=&Apache::run::evaluate($result,$safeeval,$extras.$$parstack[-1]);
543: } else {
544: $result= &Apache::run::evaluate($result,$safeeval,$extras);
545: }
546: }
547: $Apache::lonxml::post_evaluate=1;
548:
549: if (($token->[0] eq 'T') || ($token->[0] eq 'C') || ($token->[0] eq 'D') ) {
550: #Style file definitions should be correct
551: if ($target eq 'tex' && ($Apache::lonxml::usestyle)) {
552: $result=&latex_special_symbols($result);
553: }
554: }
555:
556: if ($Apache::lonxml::redirection) {
557: $Apache::lonxml::outputstack['-1'] .= $result;
558: } else {
559: $finaloutput.=$result;
560: }
561: $result = '';
562:
563: if ($token->[0] eq 'E') {
564: if ($dontpop) {
565: $lastdontpop = $token;
566: } else {
567: $lastendtag = $token->[1];
568: &end_tag($stack,$parstack,$token);
569: }
570: }
571: $dontpop=0;
572: }
573: if ($#$pars > -1) {
574: pop @$pars;
575: pop @Apache::lonxml::pwd;
576: }
577: }
578:
579: if (($#$stack == 0) && ($stack->[0] eq 'physnet') && ($target eq 'web') &&
580: ($lastendtag eq 'LONCAPA_INTERNAL_TURN_STYLE_ON')) {
581: if ((ref($lastdontpop) eq 'ARRAY') && ($lastdontpop->[1] eq 'physnet')) {
582: &end_tag($stack,$parstack,$lastdontpop);
583: }
584: }
585:
586: # if ($target eq 'meta') {
587: # $finaloutput.=&endredirection;
588: # }
589:
590: if ( $start && $target eq 'grade') { &endredirection(); }
591: if ( $Apache::lonxml::redirection > $startredirection) {
592: while ($Apache::lonxml::redirection > $startredirection) {
593: $finaloutput .= &endredirection();
594: }
595: }
596: if (($ENV{'QUERY_STRING'}) && ($target eq 'web')) {
597: $finaloutput=&afterburn($finaloutput);
598: }
599: if ($target eq 'modified') {
600: # if modfied, handle startpart and endpart
601: $finaloutput=~s/\<startpartmarker[^\>]*\>(.*)\<endpartmarker[^\>]*\>/<part>$1<\/part>/gs;
602: }
603: return $finaloutput;
604: }
605:
606: ##
607: ## Looks to see if there is a subroutine defined for this tag. If so, call it,
608: ## otherwise do not call it as we do not know what it is.
609: ##
610: sub callsub {
611: my ($sub,$target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
612: my $currentstring='';
613: my $nodefault;
614: {
615: my $sub1;
616: no strict 'refs';
617: my $tag=$token->[1];
618: # get utterly rid of extended html tags
619: if ($tag=~/^x\-/i) { return ''; }
620: my $space=$Apache::lonxml::alltags{$tag}[-1];
621: if (!$space) {
622: $tag=~tr/A-Z/a-z/;
623: $sub=~tr/A-Z/a-z/;
624: $space=$Apache::lonxml::alltags{$tag}[-1]
625: }
626:
627: my $deleted=0;
628: if (($token->[0] eq 'S') && ($target eq 'modified')) {
629: $deleted=&Apache::edit::handle_delete($space,$target,$token,$tagstack,
630: $parstack,$parser,$safeeval,
631: $style);
632: }
633: if (!$deleted) {
634: if ($space) {
635: #&Apache::lonxml::debug("Calling sub $sub in $space $metamode");
636: $sub1="$space\:\:$sub";
637: ($currentstring,$nodefault) = &$sub1($target,$token,$tagstack,
638: $parstack,$parser,$safeeval,
639: $style);
640: } else {
641: if ($target eq 'tex') {
642: # throw away tag name
643: return '';
644: }
645: #&Apache::lonxml::debug("NOT Calling sub $sub in $space $metamode");
646: if ($metamode <1) {
647: if (defined($token->[4]) && ($metamode < 1)) {
648: $currentstring = $token->[4];
649: } else {
650: $currentstring = $token->[2];
651: }
652: }
653: }
654: # &Apache::lonxml::debug("nodefalt:$nodefault:");
655: if ($currentstring eq '' && $nodefault eq '') {
656: if ($target eq 'edit') {
657: #&Apache::lonxml::debug("doing default edit for $token->[1]");
658: if ($token->[0] eq 'S') {
659: $currentstring = &Apache::edit::tag_start($target,$token);
660: } elsif ($token->[0] eq 'E') {
661: $currentstring = &Apache::edit::tag_end($target,$token);
662: }
663: }
664: }
665: if ($target eq 'modified' && $nodefault eq '') {
666: if ($currentstring eq '') {
667: if ($token->[0] eq 'S') {
668: $currentstring = $token->[4];
669: } elsif ($token->[0] eq 'E') {
670: $currentstring = $token->[2];
671: } else {
672: $currentstring = $token->[2];
673: }
674: }
675: if ($token->[0] eq 'S') {
676: $currentstring.=&Apache::edit::handle_insert();
677: } elsif ($token->[0] eq 'E') {
678: $currentstring.=&Apache::edit::handle_insertafter($token->[1]);
679: }
680: }
681: }
682: use strict 'refs';
683: }
684: return $currentstring;
685: }
686:
687: {
688: my %state;
689:
690: sub init_state {
691: undef(%state);
692: }
693:
694: sub set_state {
695: my ($key,$value) = @_;
696: $state{$key} = $value;
697: return $value;
698: }
699: sub get_state {
700: my ($key) = @_;
701: return $state{$key};
702: }
703: }
704:
705: sub setup_globals {
706: my ($request,$target)=@_;
707: $Apache::lonxml::request=$request;
708: $errorcount=0;
709: $warningcount=0;
710: $Apache::lonxml::internal_error=0;
711: $Apache::lonxml::default_homework_loaded=0;
712: $Apache::lonxml::usestyle=1;
713: &init_counter();
714: &clear_bubble_lines_for_part();
715: &init_state();
716: &set_state('target',$target);
717: @Apache::lonxml::pwd=();
718: @Apache::lonxml::extlinks=();
719: @script_var_displays=();
720: @Apache::lonxml::ssi_info=();
721: $Apache::lonxml::post_evaluate=1;
722: $Apache::lonxml::warnings_error_header='';
723: $Apache::lonxml::substitute_LaTeX_symbols = 1;
724: if ($target eq 'meta') {
725: $Apache::lonxml::redirection = 0;
726: $Apache::lonxml::metamode = 1;
727: $Apache::lonxml::evaluate = 1;
728: $Apache::lonxml::import = 0;
729: } elsif ($target eq 'answer') {
730: $Apache::lonxml::redirection = 0;
731: $Apache::lonxml::metamode = 1;
732: $Apache::lonxml::evaluate = 1;
733: $Apache::lonxml::import = 1;
734: } elsif ($target eq 'grade') {
735: &startredirection(); #ended in inner_xmlparse on exit
736: $Apache::lonxml::metamode = 0;
737: $Apache::lonxml::evaluate = 1;
738: $Apache::lonxml::import = 1;
739: } elsif ($target eq 'modified') {
740: $Apache::lonxml::redirection = 0;
741: $Apache::lonxml::metamode = 0;
742: $Apache::lonxml::evaluate = 0;
743: $Apache::lonxml::import = 0;
744: } elsif ($target eq 'edit') {
745: $Apache::lonxml::redirection = 0;
746: $Apache::lonxml::metamode = 0;
747: $Apache::lonxml::evaluate = 0;
748: $Apache::lonxml::import = 0;
749: } elsif ($target eq 'analyze') {
750: $Apache::lonxml::redirection = 0;
751: $Apache::lonxml::metamode = 0;
752: $Apache::lonxml::evaluate = 1;
753: $Apache::lonxml::import = 1;
754: } else {
755: $Apache::lonxml::redirection = 0;
756: $Apache::lonxml::metamode = 0;
757: $Apache::lonxml::evaluate = 1;
758: $Apache::lonxml::import = 1;
759: }
760: }
761:
762: sub init_safespace {
763: my ($target,$safeeval,$safehole,$safeinit) = @_;
764: $safeeval->reval('use LaTeX::Table;');
765: $safeeval->deny_only(':dangerous');
766: $safeeval->reval('use LONCAPA::LCMathComplex;');
767: $safeeval->permit_only(":default");
768: $safeeval->permit("entereval");
769: $safeeval->permit(":base_math");
770: $safeeval->permit("sort");
771: $safeeval->permit("time");
772: $safeeval->permit("caller");
773: $safeeval->deny("rand");
774: $safeeval->deny("srand");
775: $safeeval->deny(":base_io");
776: $safehole->wrap(\&Apache::scripttag::xmlparse,$safeeval,'&xmlparse');
777: $safehole->wrap(\&Apache::outputtags::multipart,$safeeval,'&multipart');
778: $safehole->wrap(\&Apache::lonnet::EXT,$safeeval,'&EXT');
779: $safehole->wrap(\&Apache::chemresponse::chem_standard_order,$safeeval,
780: '&chem_standard_order');
781: $safehole->wrap(\&Apache::response::check_status,$safeeval,'&check_status');
782: $safehole->wrap(\&Apache::response::implicit_multiplication,$safeeval,'&implicit_multiplication');
783:
784: $safehole->wrap(\&Apache::lonmaxima::maxima_eval,$safeeval,'&maxima_eval');
785: $safehole->wrap(\&Apache::lonmaxima::maxima_check,$safeeval,'&maxima_check');
786: $safehole->wrap(\&Apache::lonmaxima::maxima_cas_formula_fix,$safeeval,
787: '&maxima_cas_formula_fix');
788:
789: $safehole->wrap(\&Apache::lonr::r_eval,$safeeval,'&r_eval');
790: $safehole->wrap(\&Apache::lonr::Rentry,$safeeval,'&Rentry');
791: $safehole->wrap(\&Apache::lonr::Rarray,$safeeval,'&Rarray');
792: $safehole->wrap(\&Apache::lonr::r_check,$safeeval,'&r_check');
793: $safehole->wrap(\&Apache::lonr::r_cas_formula_fix,$safeeval,
794: '&r_cas_formula_fix');
795:
796: $safehole->wrap(\&Apache::caparesponse::capa_formula_fix,$safeeval,
797: '&capa_formula_fix');
798:
799: $safehole->wrap(\&Apache::lonlocal::locallocaltime,$safeeval,
800: '&locallocaltime');
801:
802: $safehole->wrap(\&Math::Cephes::asin,$safeeval,'&asin');
803: $safehole->wrap(\&Math::Cephes::acos,$safeeval,'&acos');
804: $safehole->wrap(\&Math::Cephes::atan,$safeeval,'&atan');
805: $safehole->wrap(\&Math::Cephes::sinh,$safeeval,'&sinh');
806: $safehole->wrap(\&Math::Cephes::cosh,$safeeval,'&cosh');
807: $safehole->wrap(\&Math::Cephes::tanh,$safeeval,'&tanh');
808: $safehole->wrap(\&Math::Cephes::asinh,$safeeval,'&asinh');
809: $safehole->wrap(\&Math::Cephes::acosh,$safeeval,'&acosh');
810: $safehole->wrap(\&Math::Cephes::atanh,$safeeval,'&atanh');
811: $safehole->wrap(\&Math::Cephes::erf,$safeeval,'&erf');
812: $safehole->wrap(\&Math::Cephes::erfc,$safeeval,'&erfc');
813: $safehole->wrap(\&Math::Cephes::j0,$safeeval,'&j0');
814: $safehole->wrap(\&Math::Cephes::j1,$safeeval,'&j1');
815: $safehole->wrap(\&Math::Cephes::jn,$safeeval,'&jn');
816: $safehole->wrap(\&Math::Cephes::jv,$safeeval,'&jv');
817: $safehole->wrap(\&Math::Cephes::y0,$safeeval,'&y0');
818: $safehole->wrap(\&Math::Cephes::y1,$safeeval,'&y1');
819: $safehole->wrap(\&Math::Cephes::yn,$safeeval,'&yn');
820: $safehole->wrap(\&Math::Cephes::yv,$safeeval,'&yv');
821:
822: $safehole->wrap(\&Math::Cephes::bdtr ,$safeeval,'&bdtr' );
823: $safehole->wrap(\&Math::Cephes::bdtrc ,$safeeval,'&bdtrc' );
824: $safehole->wrap(\&Math::Cephes::bdtri ,$safeeval,'&bdtri' );
825: $safehole->wrap(\&Math::Cephes::btdtr ,$safeeval,'&btdtr' );
826: $safehole->wrap(\&Math::Cephes::chdtr ,$safeeval,'&chdtr' );
827: $safehole->wrap(\&Math::Cephes::chdtrc,$safeeval,'&chdtrc');
828: $safehole->wrap(\&Math::Cephes::chdtri,$safeeval,'&chdtri');
829: $safehole->wrap(\&Math::Cephes::fdtr ,$safeeval,'&fdtr' );
830: $safehole->wrap(\&Math::Cephes::fdtrc ,$safeeval,'&fdtrc' );
831: $safehole->wrap(\&Math::Cephes::fdtri ,$safeeval,'&fdtri' );
832: $safehole->wrap(\&Math::Cephes::gdtr ,$safeeval,'&gdtr' );
833: $safehole->wrap(\&Math::Cephes::gdtrc ,$safeeval,'&gdtrc' );
834: $safehole->wrap(\&Math::Cephes::nbdtr ,$safeeval,'&nbdtr' );
835: $safehole->wrap(\&Math::Cephes::nbdtrc,$safeeval,'&nbdtrc');
836: $safehole->wrap(\&Math::Cephes::nbdtri,$safeeval,'&nbdtri');
837: $safehole->wrap(\&Math::Cephes::ndtr ,$safeeval,'&ndtr' );
838: $safehole->wrap(\&Math::Cephes::ndtri ,$safeeval,'&ndtri' );
839: $safehole->wrap(\&Math::Cephes::pdtr ,$safeeval,'&pdtr' );
840: $safehole->wrap(\&Math::Cephes::pdtrc ,$safeeval,'&pdtrc' );
841: $safehole->wrap(\&Math::Cephes::pdtri ,$safeeval,'&pdtri' );
842: $safehole->wrap(\&Math::Cephes::stdtr ,$safeeval,'&stdtr' );
843: $safehole->wrap(\&Math::Cephes::stdtri,$safeeval,'&stdtri');
844:
845: $safehole->wrap(\&Math::Cephes::Matrix::mat,$safeeval,'&mat');
846: $safehole->wrap(\&Math::Cephes::Matrix::new,$safeeval,
847: '&Math::Cephes::Matrix::new');
848: $safehole->wrap(\&Math::Cephes::Matrix::coef,$safeeval,
849: '&Math::Cephes::Matrix::coef');
850: $safehole->wrap(\&Math::Cephes::Matrix::clr,$safeeval,
851: '&Math::Cephes::Matrix::clr');
852: $safehole->wrap(\&Math::Cephes::Matrix::add,$safeeval,
853: '&Math::Cephes::Matrix::add');
854: $safehole->wrap(\&Math::Cephes::Matrix::sub,$safeeval,
855: '&Math::Cephes::Matrix::sub');
856: $safehole->wrap(\&Math::Cephes::Matrix::mul,$safeeval,
857: '&Math::Cephes::Matrix::mul');
858: $safehole->wrap(\&Math::Cephes::Matrix::div,$safeeval,
859: '&Math::Cephes::Matrix::div');
860: $safehole->wrap(\&Math::Cephes::Matrix::inv,$safeeval,
861: '&Math::Cephes::Matrix::inv');
862: $safehole->wrap(\&Math::Cephes::Matrix::transp,$safeeval,
863: '&Math::Cephes::Matrix::transp');
864: $safehole->wrap(\&Math::Cephes::Matrix::simq,$safeeval,
865: '&Math::Cephes::Matrix::simq');
866: $safehole->wrap(\&Math::Cephes::Matrix::mat_to_vec,$safeeval,
867: '&Math::Cephes::Matrix::mat_to_vec');
868: $safehole->wrap(\&Math::Cephes::Matrix::vec_to_mat,$safeeval,
869: '&Math::Cephes::Matrix::vec_to_mat');
870: $safehole->wrap(\&Math::Cephes::Matrix::check,$safeeval,
871: '&Math::Cephes::Matrix::check');
872: $safehole->wrap(\&Math::Cephes::Matrix::check,$safeeval,
873: '&Math::Cephes::Matrix::check');
874:
875: # $safehole->wrap(\&Math::Cephes::new_fract,$safeeval,'&new_fract');
876: # $safehole->wrap(\&Math::Cephes::radd,$safeeval,'&radd');
877: # $safehole->wrap(\&Math::Cephes::rsub,$safeeval,'&rsub');
878: # $safehole->wrap(\&Math::Cephes::rmul,$safeeval,'&rmul');
879: # $safehole->wrap(\&Math::Cephes::rdiv,$safeeval,'&rdiv');
880: # $safehole->wrap(\&Math::Cephes::euclid,$safeeval,'&euclid');
881:
882: $safehole->wrap(\&Math::Random::random_beta,$safeeval,'&math_random_beta');
883: $safehole->wrap(\&Math::Random::random_chi_square,$safeeval,'&math_random_chi_square');
884: $safehole->wrap(\&Math::Random::random_exponential,$safeeval,'&math_random_exponential');
885: $safehole->wrap(\&Math::Random::random_f,$safeeval,'&math_random_f');
886: $safehole->wrap(\&Math::Random::random_gamma,$safeeval,'&math_random_gamma');
887: $safehole->wrap(\&Math::Random::random_multivariate_normal,$safeeval,'&math_random_multivariate_normal');
888: $safehole->wrap(\&Math::Random::random_multinomial,$safeeval,'&math_random_multinomial');
889: $safehole->wrap(\&Math::Random::random_noncentral_chi_square,$safeeval,'&math_random_noncentral_chi_square');
890: $safehole->wrap(\&Math::Random::random_noncentral_f,$safeeval,'&math_random_noncentral_f');
891: $safehole->wrap(\&Math::Random::random_normal,$safeeval,'&math_random_normal');
892: $safehole->wrap(\&Math::Random::random_permutation,$safeeval,'&math_random_permutation');
893: $safehole->wrap(\&Math::Random::random_permuted_index,$safeeval,'&math_random_permuted_index');
894: $safehole->wrap(\&Math::Random::random_uniform,$safeeval,'&math_random_uniform');
895: $safehole->wrap(\&Math::Random::random_poisson,$safeeval,'&math_random_poisson');
896: $safehole->wrap(\&Math::Random::random_uniform_integer,$safeeval,'&math_random_uniform_integer');
897: $safehole->wrap(\&Math::Random::random_negative_binomial,$safeeval,'&math_random_negative_binomial');
898: $safehole->wrap(\&Math::Random::random_binomial,$safeeval,'&math_random_binomial');
899: $safehole->wrap(\&Math::Random::random_seed_from_phrase,$safeeval,'&random_seed_from_phrase');
900: $safehole->wrap(\&Math::Random::random_set_seed_from_phrase,$safeeval,'&random_set_seed_from_phrase');
901: $safehole->wrap(\&Math::Random::random_get_seed,$safeeval,'&random_get_seed');
902: $safehole->wrap(\&Math::Random::random_set_seed,$safeeval,'&random_set_seed');
903: $safehole->wrap(\&Apache::loncommon::languages,$safeeval,'&languages');
904: $safehole->wrap(\&Apache::lonxml::error,$safeeval,'&LONCAPA_INTERNAL_ERROR');
905: $safehole->wrap(\&Apache::lonxml::debug,$safeeval,'&LONCAPA_INTERNAL_DEBUG');
906: $safehole->wrap(\&Apache::lonnet::logthis,$safeeval,'&LONCAPA_INTERNAL_LOGTHIS');
907: $safehole->wrap(\&Apache::inputtags::finalizeawards,$safeeval,'&LONCAPA_INTERNAL_FINALIZEAWARDS');
908: $safehole->wrap(\&Apache::caparesponse::get_sigrange,$safeeval,'&LONCAPA_INTERNAL_get_sigrange');
909: $safehole->wrap(\&Apache::functionplotresponse::fpr_val,$safeeval,'&fpr_val');
910: $safehole->wrap(\&Apache::functionplotresponse::fpr_f,$safeeval,'&fpr_f');
911: $safehole->wrap(\&Apache::functionplotresponse::fpr_dfdx,$safeeval,'&fpr_dfdx');
912: $safehole->wrap(\&Apache::functionplotresponse::fpr_d2fdx2,$safeeval,'&fpr_d2fdx2');
913: $safehole->wrap(\&Apache::functionplotresponse::fpr_vectorcoords,$safeeval,'&fpr_vectorcoords');
914: $safehole->wrap(\&Apache::functionplotresponse::fpr_objectcoords,$safeeval,'&fpr_objectcoords');
915: $safehole->wrap(\&Apache::functionplotresponse::fpr_vectorlength,$safeeval,'&fpr_vectorlength');
916: $safehole->wrap(\&Apache::functionplotresponse::fpr_vectorangle,$safeeval,'&fpr_vectorangle');
917:
918: # use Data::Dumper;
919: # $safehole->wrap(\&Data::Dumper::Dumper,$safeeval,'&LONCAPA_INTERNAL_Dumper');
920: #need to inspect this class of ops
921: # $safeeval->deny(":base_orig");
922: $safeeval->permit("require");
923: $safeinit .= ';$external::target="'.$target.'";';
924: &Apache::run::run($safeinit,$safeeval);
925: my $rawrndseed = &initialize_rndseed($safeeval);
926: if ($target eq 'grade') {
927: $Apache::lonhomework::rawrndseed = $rawrndseed;
928: }
929: }
930:
931: sub clean_safespace {
932: my ($safeeval) = @_;
933: delete_package_recurse($safeeval->{Root});
934: }
935:
936: sub delete_package_recurse {
937: my ($package) = @_;
938: my @subp;
939: {
940: no strict 'refs';
941: while (my ($key,$val) = each(%{*{"$package\::"}})) {
942: if (!defined($val)) { next; }
943: local (*ENTRY) = $val;
944: if (defined *ENTRY{HASH} && $key =~ /::$/ &&
945: $key ne "main::" && $key ne "<none>::")
946: {
947: my ($p) = $package ne "main" ? "$package\::" : "";
948: ($p .= $key) =~ s/::$//;
949: push(@subp,$p);
950: }
951: }
952: }
953: foreach my $p (@subp) {
954: delete_package_recurse($p);
955: }
956: Symbol::delete_package($package);
957: }
958:
959: sub initialize_rndseed {
960: my ($safeeval)=@_;
961: my $rndseed;
962: my ($symb,$courseid,$domain,$name) = &Apache::lonnet::whichuser();
963: $rndseed=&Apache::lonnet::rndseed($symb,$courseid,$domain,$name);
964: my $safeinit = '$external::randomseed="'.$rndseed.'";';
965: &Apache::lonxml::debug("Setting rndseed to $rndseed");
966: &Apache::run::run($safeinit,$safeeval);
967: return $rndseed;
968: }
969:
970: sub default_homework_load {
971: my ($safeeval)=@_;
972: &Apache::lonxml::debug('Loading default_homework');
973: my $default=&Apache::lonnet::getfile($Apache::lonnet::perlvar{'lonIncludes'}.
974: '/default_homework.lcpm');
975: if ($default eq -1) {
976: &Apache::lonxml::error("<b>Unable to find <i>default_homework.lcpm</i></b>");
977: } else {
978: &Apache::run::run($default,$safeeval);
979: $Apache::lonxml::default_homework_loaded=1;
980: }
981: }
982:
983: {
984: my $alarm_depth;
985: sub init_alarm {
986: alarm(0);
987: $alarm_depth=0;
988: }
989:
990: sub start_alarm {
991: if ($alarm_depth<1) {
992: my $old=alarm($Apache::lonnet::perlvar{'lonScriptTimeout'});
993: if ($old) {
994: &Apache::lonxml::error("Cancelled an alarm of $old, this shouldn't occur.");
995: }
996: }
997: $alarm_depth++;
998: }
999:
1000: sub end_alarm {
1001: $alarm_depth--;
1002: if ($alarm_depth<1) { alarm(0); }
1003: }
1004: }
1005: my $metamode_was;
1006: sub startredirection {
1007: if (!$Apache::lonxml::redirection) {
1008: $metamode_was=$Apache::lonxml::metamode;
1009: }
1010: $Apache::lonxml::metamode=0;
1011: $Apache::lonxml::redirection++;
1012: push (@Apache::lonxml::outputstack, '');
1013: }
1014:
1015: sub endredirection {
1016: if (!$Apache::lonxml::redirection) {
1017: &Apache::lonxml::error("Endredirection was called before a startredirection, perhaps you have unbalanced tags. Some debugging information:".join ":",caller);
1018: return '';
1019: }
1020: $Apache::lonxml::redirection--;
1021: if (!$Apache::lonxml::redirection) {
1022: $Apache::lonxml::metamode=$metamode_was;
1023: }
1024: pop @Apache::lonxml::outputstack;
1025: }
1026: sub in_redirection {
1027: return ($Apache::lonxml::redirection > 0)
1028: }
1029:
1030: sub end_tag {
1031: my ($tagstack,$parstack,$token)=@_;
1032: pop(@$tagstack);
1033: pop(@$parstack);
1034: &decreasedepth($token);
1035: }
1036:
1037: sub initdepth {
1038: @Apache::lonxml::depthcounter=();
1039: undef($Apache::lonxml::last_depth_count);
1040: }
1041:
1042:
1043: my @timers;
1044: my $lasttime;
1045: # @Apache::lonxml::depthcounter -> count of tags that exist so
1046: # far at each level
1047: # $Apache::lonxml::last_depth_count -> when ascending, need to
1048: # remember the count for the level below the current level (for
1049: # example going from 1_2 -> 1 -> 1_3 need to remember the 2 )
1050:
1051: sub increasedepth {
1052: my ($token) = @_;
1053: push(@Apache::lonxml::depthcounter,$Apache::lonxml::last_depth_count+1);
1054: undef($Apache::lonxml::last_depth_count);
1055: my $time;
1056: if ($Apache::lonxml::debug eq "1") {
1057: push(@timers,[&gettimeofday()]);
1058: $time=&tv_interval($lasttime);
1059: $lasttime=[&gettimeofday()];
1060: }
1061: my $spacing=' 'x($#Apache::lonxml::depthcounter);
1062: $Apache::lonxml::curdepth=join('_',@Apache::lonxml::depthcounter);
1063: # &Apache::lonxml::debug("s$spacing$Apache::lonxml::depth : $Apache::lonxml::olddepth : $Apache::lonxml::curdepth : $token->[1] : $time");
1064: #print "<br />s $Apache::lonxml::depth : $Apache::lonxml::olddepth : $curdepth : $token->[1]\n";
1065: }
1066:
1067: sub decreasedepth {
1068: my ($token) = @_;
1069: if ( $#Apache::lonxml::depthcounter == -1) {
1070: &Apache::lonxml::warning(&mt("Missing tags, unable to properly run file."));
1071: }
1072: $Apache::lonxml::last_depth_count = pop(@Apache::lonxml::depthcounter);
1073:
1074: my ($timer,$time);
1075: if ($Apache::lonxml::debug eq "1") {
1076: $timer=pop(@timers);
1077: $time=&tv_interval($lasttime);
1078: $lasttime=[&gettimeofday()];
1079: }
1080: my $spacing=' 'x($#Apache::lonxml::depthcounter);
1081: $Apache::lonxml::curdepth = join('_',@Apache::lonxml::depthcounter);
1082: # &Apache::lonxml::debug("e$spacing$Apache::lonxml::depth : $Apache::lonxml::olddepth : $Apache::lonxml::curdepth : $token->[1] : $time : ".&tv_interval($timer));
1083: #print "<br />e $Apache::lonxml::depth : $Apache::lonxml::olddepth : $token->[1] : $curdepth\n";
1084: }
1085:
1086: sub get_id {
1087: my ($parstack,$safeeval)=@_;
1088: my $id= &Apache::lonxml::get_param('id',$parstack,$safeeval);
1089: if ($env{'request.state'} eq 'construct' && $id =~ /([._]|[^\w\d\s[:punct:]])/) {
1090: &error(&mt('ID [_1] contains invalid characters. IDs are only allowed to contain letters, numbers, spaces and -','"<tt>'.$id.'</tt>"'));
1091: }
1092: if ($id =~ /^\s*$/) { $id = $Apache::lonxml::curdepth; }
1093: return $id;
1094: }
1095:
1096: sub get_all_text_unbalanced {
1097: #there is a copy of this in lonpublisher.pm
1098: my($tag,$pars)= @_;
1099: my $token;
1100: my $result='';
1101: $tag='<'.$tag.'>';
1102: while ($token = $$pars[-1]->get_token) {
1103: if (($token->[0] eq 'T')||($token->[0] eq 'C')||($token->[0] eq 'D')) {
1104: if ($token->[0] eq 'T' && $token->[2]) {
1105: $result.='<![CDATA['.$token->[1].']]>';
1106: } else {
1107: $result.=$token->[1];
1108: }
1109: } elsif ($token->[0] eq 'PI') {
1110: $result.=$token->[2];
1111: } elsif ($token->[0] eq 'S') {
1112: $result.=$token->[4];
1113: } elsif ($token->[0] eq 'E') {
1114: $result.=$token->[2];
1115: }
1116: if ($result =~ /\Q$tag\E/is) {
1117: ($result,my $redo)=$result =~ /(.*)\Q$tag\E(.*)/is;
1118: #&Apache::lonxml::debug('Got a winner with leftovers ::'.$2);
1119: #&Apache::lonxml::debug('Result is :'.$1);
1120: $redo=$tag.$redo;
1121: &Apache::lonxml::newparser($pars,\$redo);
1122: last;
1123: }
1124: }
1125: return $result
1126:
1127: }
1128:
1129: #########################################################################
1130: # #
1131: # bubble line counter management #
1132: # #
1133: #########################################################################
1134:
1135: =pod
1136:
1137: For bubble grading mode and exam bubble printing mode, the tracking of
1138: the current 'bubble line number' is stored in the %env element
1139: 'form.counter', and is modifed and handled by the following routines.
1140:
1141: The value of it is stored in $Apache:lonxml::counter when live and
1142: stored back to env after done.
1143:
1144: =item &increment_counter($increment, $part_response);
1145:
1146: Increments the internal counter environment variable a specified amount
1147:
1148: Optional Arguments:
1149: $increment - amount to increment by (defaults to 1)
1150: Also 1 if the value is negative or zero.
1151: $part_response - A concatenation of the part and response id
1152: identifying exactly what is being 'answered'.
1153:
1154:
1155: =cut
1156:
1157: sub increment_counter {
1158: my ($increment, $part_response) = @_;
1159: if ($env{'form.grade_noincrement'}) { return; }
1160: if (!defined($increment) || $increment le 0) {
1161: $increment = 1;
1162: }
1163: $Apache::lonxml::counter += $increment;
1164:
1165: # If the caller supplied the response_id parameter,
1166: # Maintain its counter.. creating if necessary.
1167:
1168: if (defined($part_response)) {
1169: if (!defined($Apache::lonxml::counters_per_part{$part_response})) {
1170: $Apache::lonxml::counters_per_part{$part_response} = 0;
1171: }
1172: $Apache::lonxml::counters_per_part{$part_response} += $increment;
1173: my $new_value = $Apache::lonxml::counters_per_part{$part_response};
1174: }
1175:
1176: $Apache::lonxml::counter_changed=1;
1177: }
1178:
1179: =pod
1180:
1181: =item &init_counter($increment);
1182:
1183: Initialize the internal counter environment variable
1184:
1185: =cut
1186:
1187: sub init_counter {
1188: if ($env{'request.state'} eq 'construct') {
1189: $Apache::lonxml::counter=1;
1190: $Apache::lonxml::counter_changed=1;
1191: } elsif (defined($env{'form.counter'})) {
1192: $Apache::lonxml::counter=$env{'form.counter'};
1193: $Apache::lonxml::counter_changed=0;
1194: } else {
1195: $Apache::lonxml::counter=1;
1196: $Apache::lonxml::counter_changed=1;
1197: }
1198: }
1199:
1200: sub store_counter {
1201: &Apache::lonnet::appenv({'form.counter' => $Apache::lonxml::counter});
1202: $Apache::lonxml::counter_changed=0;
1203: return '';
1204: }
1205:
1206: {
1207: my $state;
1208: sub clear_problem_counter {
1209: undef($state);
1210: &Apache::lonnet::delenv('form.counter');
1211: &Apache::lonxml::init_counter();
1212: &Apache::lonxml::store_counter();
1213: }
1214:
1215: sub remember_problem_counter {
1216: &Apache::lonnet::transfer_profile_to_env(undef,undef,1);
1217: $state = $env{'form.counter'};
1218: }
1219:
1220: sub restore_problem_counter {
1221: if (defined($state)) {
1222: &Apache::lonnet::appenv({'form.counter' => $state});
1223: }
1224: }
1225: sub get_problem_counter {
1226: if ($Apache::lonxml::counter_changed) { &store_counter() }
1227: &Apache::lonnet::transfer_profile_to_env(undef,undef,1);
1228: return $env{'form.counter'};
1229: }
1230: }
1231:
1232: =pod
1233:
1234: =item bubble_lines_for_part(part_response)
1235:
1236: Returns the number of lines required to get a response for
1237: $part_response (this is just $Apache::lonxml::counters_per_part{$part_response}
1238:
1239: =cut
1240:
1241: sub bubble_lines_for_part {
1242: my ($part_response) = @_;
1243:
1244: if (!defined($Apache::lonxml::counters_per_part{$part_response})) {
1245: return 0;
1246: } else {
1247: return $Apache::lonxml::counters_per_part{$part_response};
1248: }
1249: }
1250:
1251: =pod
1252:
1253: =item clear_bubble_lines_for_part
1254:
1255: Clears the hash of bubble lines per part. If a caller
1256: needs to analyze several resources this should be called between
1257: resources to reset the hash for each problem being analyzed.
1258:
1259: =cut
1260:
1261: sub clear_bubble_lines_for_part {
1262: undef(%Apache::lonxml::counters_per_part);
1263: }
1264:
1265: =pod
1266:
1267: =item set_bubble_lines(part_response, value)
1268:
1269: If there is a problem part, that for whatever reason
1270: requires bubble lines that are not
1271: the same as the counter increment, it can call this sub during
1272: analysis to set its hash value explicitly.
1273:
1274: =cut
1275:
1276: sub set_bubble_lines {
1277: my ($part_response, $value) = @_;
1278:
1279: $Apache::lonxml::counters_per_part{$part_response} = $value;
1280: }
1281:
1282: =pod
1283:
1284: =item get_bubble_line_hash
1285:
1286: Returns the current bubble line hash. This is assumed to
1287: be small so we return a copy
1288:
1289:
1290: =cut
1291:
1292: sub get_bubble_line_hash {
1293: return %Apache::lonxml::counters_per_part;
1294: }
1295:
1296:
1297: #--------------------------------------------------
1298:
1299: sub get_all_text {
1300: my($tag,$pars,$style)= @_;
1301: my $gotfullstack=1;
1302: if (ref($pars) ne 'ARRAY') {
1303: $gotfullstack=0;
1304: $pars=[$pars];
1305: }
1306: if (ref($style) ne 'HASH') {
1307: $style={};
1308: }
1309: my $depth=0;
1310: my $token;
1311: my $result='';
1312: if ( $tag =~ m:^/: ) {
1313: my $tag=substr($tag,1);
1314: #&Apache::lonxml::debug("have:$tag:");
1315: my $top_empty=0;
1316: while (($depth >=0) && ($#$pars > -1) && (!$top_empty)) {
1317: while (($depth >=0) && ($token = $$pars[-1]->get_token)) {
1318: #&Apache::lonxml::debug("e token:$token->[0]:$depth:$token->[1]:".$#$pars.":".$#Apache::lonxml::pwd);
1319: if (($token->[0] eq 'T')||($token->[0] eq 'C')||($token->[0] eq 'D')) {
1320: if ($token->[2]) {
1321: $result.='<![CDATA['.$token->[1].']]>';
1322: } else {
1323: $result.=$token->[1];
1324: }
1325: } elsif ($token->[0] eq 'PI') {
1326: $result.=$token->[2];
1327: } elsif ($token->[0] eq 'S') {
1328: if ($token->[1] =~ /^\Q$tag\E$/i) { $depth++; }
1329: if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_ON$/) { $Apache::lonxml::usestyle=1; }
1330: if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_OFF$/) { $Apache::lonxml::usestyle=0; }
1331: $result.=$token->[4];
1332: } elsif ($token->[0] eq 'E') {
1333: if ( $token->[1] =~ /^\Q$tag\E$/i) { $depth--; }
1334: #skip sending back the last end tag
1335: if ($depth == 0 && exists($$style{'/'.$token->[1]}) && $Apache::lonxml::usestyle) {
1336: my $string=
1337: '<LONCAPA_INTERNAL_TURN_STYLE_OFF end="yes" />'.
1338: $$style{'/'.$token->[1]}.
1339: $token->[2].
1340: '<LONCAPA_INTERNAL_TURN_STYLE_ON />';
1341: &Apache::lonxml::newparser($pars,\$string);
1342: #&Apache::lonxml::debug("reParsing $string");
1343: next;
1344: }
1345: if ($depth > -1) {
1346: $result.=$token->[2];
1347: } else {
1348: $$pars[-1]->unget_token($token);
1349: }
1350: }
1351: }
1352: if (($depth >=0) && ($#$pars == 0) ) { $top_empty=1; }
1353: if (($depth >=0) && ($#$pars > 0) ) {
1354: pop(@$pars);
1355: pop(@Apache::lonxml::pwd);
1356: }
1357: }
1358: if ($top_empty && $depth >= 0) {
1359: #never found the end tag ran out of text, throw error send back blank
1360: &error('Never found end tag for <'.$tag.
1361: '> current string <pre>'.
1362: &HTML::Entities::encode($result,'<>&"').
1363: '</pre>');
1364: if ($gotfullstack) {
1365: my $newstring='</'.$tag.'>'.$result;
1366: &Apache::lonxml::newparser($pars,\$newstring);
1367: }
1368: $result='';
1369: }
1370: } else {
1371: while ($#$pars > -1) {
1372: while ($token = $$pars[-1]->get_token) {
1373: #&Apache::lonxml::debug("s token:$token->[0]:$depth:$token->[1]");
1374: if (($token->[0] eq 'T')||($token->[0] eq 'C')||
1375: ($token->[0] eq 'D')) {
1376: if ($token->[2]) {
1377: $result.='<![CDATA['.$token->[1].']]>';
1378: } else {
1379: $result.=$token->[1];
1380: }
1381: } elsif ($token->[0] eq 'PI') {
1382: $result.=$token->[2];
1383: } elsif ($token->[0] eq 'S') {
1384: if ( $token->[1] =~ /^\Q$tag\E$/i) {
1385: $$pars[-1]->unget_token($token); last;
1386: } else {
1387: $result.=$token->[4];
1388: }
1389: if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_ON$/) { $Apache::lonxml::usestyle=1; }
1390: if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_OFF$/) { $Apache::lonxml::usestyle=0; }
1391: } elsif ($token->[0] eq 'E') {
1392: $result.=$token->[2];
1393: }
1394: }
1395: if (($#$pars > 0) ) {
1396: pop(@$pars);
1397: pop(@Apache::lonxml::pwd);
1398: } else { last; }
1399: }
1400: }
1401: #&Apache::lonxml::debug("Exit:$result:");
1402: return $result
1403: }
1404:
1405: sub newparser {
1406: my ($parser,$contentref,$dir) = @_;
1407: push (@$parser,HTML::LCParser->new($contentref));
1408: $$parser[-1]->xml_mode(1);
1409: $$parser[-1]->marked_sections(1);
1410: if ( $dir eq '' ) {
1411: push (@Apache::lonxml::pwd, $Apache::lonxml::pwd[$#Apache::lonxml::pwd]);
1412: } else {
1413: push (@Apache::lonxml::pwd, $dir);
1414: }
1415: }
1416:
1417: sub parstring {
1418: my ($token) = @_;
1419: my (@vars,@values);
1420: foreach my $attr (@{$token->[3]}) {
1421: if ($attr!~/\W/) {
1422: my $val=$token->[2]->{$attr};
1423: $val =~ s/([\%\@\\\"\'])/\\$1/g;
1424: $val =~ s/(\$[^\{a-zA-Z_])/\\$1/g;
1425: $val =~ s/(\$)$/\\$1/;
1426: #if ($val =~ m/^[\%\@]/) { $val="\\".$val; }
1427: push(@vars,"\$$attr");
1428: push(@values,"\"$val\"");
1429: }
1430: }
1431: my $var_init =
1432: (@vars) ? 'my ('.join(',',@vars).') = ('.join(',',@values).');'
1433: : '';
1434: return $var_init;
1435: }
1436:
1437: sub extlink {
1438: my ($res,$exact)=@_;
1439: if (!$exact) {
1440: $res=&Apache::lonnet::hreflocation($Apache::lonxml::pwd[-1],$res);
1441: }
1442: push(@Apache::lonxml::extlinks,$res);
1443: }
1444:
1445: sub writeallows {
1446: unless ($#extlinks>=0) { return; }
1447: my $thisurl = &Apache::lonnet::clutter(shift);
1448: if ($env{'httpref.'.$thisurl}) {
1449: $thisurl=$env{'httpref.'.$thisurl};
1450: }
1451: my $thisdir=$thisurl;
1452: $thisdir=~s/\/[^\/]+$//;
1453: my %httpref=();
1454: foreach (@extlinks) {
1455: $httpref{'httpref.'.
1456: &Apache::lonnet::hreflocation($thisdir,&unescape($_))}=$thisurl;
1457: }
1458: @extlinks=();
1459: &Apache::lonnet::appenv(\%httpref);
1460: }
1461:
1462: sub register_ssi {
1463: my ($url,%form)=@_;
1464: push (@Apache::lonxml::ssi_info,{'url'=>$url,'form'=>\%form});
1465: return '';
1466: }
1467:
1468: sub do_registered_ssi {
1469: foreach my $info (@Apache::lonxml::ssi_info) {
1470: my %form=%{ $info->{'form'}};
1471: my $url=$info->{'url'};
1472: &Apache::lonnet::ssi($url,%form);
1473: }
1474: }
1475:
1476: sub add_script_result {
1477: my ($display) = @_;
1478: if ($display ne '') {
1479: push(@script_var_displays, $display);
1480: }
1481: }
1482:
1483: #
1484: # Afterburner handles anchors, highlights and links
1485: #
1486: sub afterburn {
1487: my $result=shift;
1488: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
1489: ['highlight','anchor','link']);
1490: if ($env{'form.highlight'}) {
1491: foreach (split(/\,/,$env{'form.highlight'})) {
1492: my $anchorname=$_;
1493: my $matchthis=$anchorname;
1494: $matchthis=~s/\_+/\\s\+/g;
1495: $result=~s/(\Q$matchthis\E)/\<font color=\"red\"\>$1\<\/font\>/gs;
1496: }
1497: }
1498: if ($env{'form.link'}) {
1499: foreach (split(/\,/,$env{'form.link'})) {
1500: my ($anchorname,$linkurl)=split(/\>/,$_);
1501: my $matchthis=$anchorname;
1502: $matchthis=~s/\_+/\\s\+/g;
1503: $result=~s/(\Q$matchthis\E)/\<a href=\"$linkurl\"\>$1\<\/a\>/gs;
1504: }
1505: }
1506: if ($env{'form.anchor'}) {
1507: my $anchorname=$env{'form.anchor'};
1508: my $matchthis=$anchorname;
1509: $matchthis=~s/\_+/\\s\+/g;
1510: $result=~s/(\Q$matchthis\E)/\<a name=\"$anchorname\"\>$1\<\/a\>/s;
1511: $result.=(<<"ENDSCRIPT");
1512: <script type="text/javascript">
1513: document.location.hash='$anchorname';
1514: </script>
1515: ENDSCRIPT
1516: }
1517: return $result;
1518: }
1519:
1520: sub storefile {
1521: my ($file,$contents)=@_;
1522: &Apache::lonnet::correct_line_ends(\$contents);
1523: if (my $fh=Apache::File->new('>'.$file)) {
1524: print $fh $contents;
1525: $fh->close();
1526: return 1;
1527: } else {
1528: &warning(&mt('Unable to save file [_1]','<tt>'.$file.'</tt>'));
1529: return 0;
1530: }
1531: }
1532:
1533: sub createnewhtml {
1534: my $title=&mt('Title of document goes here');
1535: my $body=&mt('Body of document goes here');
1536: my $filecontents=(<<SIMPLECONTENT);
1537: <html>
1538: <head>
1539: <title>$title</title>
1540: </head>
1541: <body bgcolor="#FFFFFF">
1542: $body
1543: </body>
1544: </html>
1545: SIMPLECONTENT
1546: return $filecontents;
1547: }
1548:
1549: sub createnewsty {
1550: my $filecontents=(<<SIMPLECONTENT);
1551: <definetag name="">
1552: <render>
1553: <web></web>
1554: <tex></tex>
1555: </render>
1556: </definetag>
1557: SIMPLECONTENT
1558: return $filecontents;
1559: }
1560:
1561: sub createnewjs {
1562: my $filecontents=(<<SIMPLECONTENT);
1563: <script type="text/javascript" language="Javascript">
1564:
1565: </script>
1566: SIMPLECONTENT
1567: return $filecontents;
1568: }
1569:
1570: sub verify_html {
1571: my ($filecontents)=@_;
1572: my ($is_html,$is_xml,$is_physnet);
1573: if ($filecontents =~/(?:\<|\<\;)\?xml[^\<]*\?(?:\>|\>\;)/is) {
1574: $is_xml = 1;
1575: } elsif ($filecontents =~/(?:\<|\<\;)html(?:\s+[^\<]+|\s*)(?:\>|\>\;)/is) {
1576: $is_html = 1;
1577: } elsif ($filecontents =~/(?:\<|\<\;)physnet[^\<]*(?:\>|\>\;)/is) {
1578: $is_physnet = 1;
1579: }
1580: unless ($is_xml || $is_html || $is_physnet) {
1581: return &mt('File does not have [_1] or [_2] starting tag','<html>','<?xml ?>');
1582: }
1583: if ($is_html) {
1584: if ($filecontents!~/(?:\<|\<\;)\/html(?:\>|\>\;)/is) {
1585: return &mt('File does not have [_1] ending tag','<html>');
1586: }
1587: if ($filecontents!~/(?:\<|\<\;)(?:body|frameset)[^\<]*(?:\>|\>\;)/is) {
1588: return &mt('File does not have [_1] or [_2] starting tag','<body>','<frameset>');
1589: }
1590: if ($filecontents!~/(?:\<|\<\;)\/(?:body|frameset)[^\<]*(?:\>|\>\;)/is) {
1591: return &mt('File does not have [_1] or [_2] ending tag','<body>','<frameset>');
1592: }
1593: }
1594: return '';
1595: }
1596:
1597: sub renderingoptions {
1598: my %langchoices=('' => '');
1599: foreach (&Apache::loncommon::languageids()) {
1600: if (&Apache::loncommon::supportedlanguagecode($_)) {
1601: $langchoices{&Apache::loncommon::supportedlanguagecode($_)}
1602: = &Apache::loncommon::plainlanguagedescription($_);
1603: }
1604: }
1605: my $output;
1606: unless ($env{'form.forceedit'}) {
1607: $output .=
1608: '<span class="LC_nobreak">'.
1609: &mt('Language:').' '.
1610: &Apache::loncommon::select_form(
1611: $env{'form.languages'},
1612: 'languages',
1613: {&Apache::lonlocal::texthash(%langchoices)}).
1614: '</span>';
1615: }
1616: $output .=
1617: ' <span class="LC_nobreak">'.
1618: &mt('Math Rendering:').' '.
1619: &Apache::loncommon::select_form(
1620: $env{'form.texengine'},
1621: 'texengine',
1622: {&Apache::lonlocal::texthash
1623: ('' => '',
1624: 'tth' => 'tth (TeX to HTML)',
1625: 'MathJax' => 'MathJax',
1626: 'jsMath' => 'jsMath',
1627: 'mimetex' => 'mimetex (Convert to Images)')}).
1628: '</span>';
1629: return $output;
1630: }
1631:
1632: sub inserteditinfo {
1633: my ($filecontents,$filetype,$filename,$symb,$itemtitle,$folderpath,$uri,$action) = @_;
1634: $filecontents = &HTML::Entities::encode($filecontents,'<>&"');
1635: my $xml_help = '';
1636: my $initialize='';
1637: my $textarea_id = 'filecont';
1638: my ($dragmath_button,$deps_button,$context,$cnum,$cdom,$add_to_onload,
1639: $add_to_onresize,$init_dragmath);
1640: $initialize=&Apache::lonhtmlcommon::spellheader();
1641: if ($filetype eq 'html') {
1642: if ($env{'request.course.id'}) {
1643: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
1644: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
1645: if ($uri =~ m{^\Q/uploaded/$cdom/$cnum/portfolio/syllabus/\E}) {
1646: $context = 'syllabus';
1647: }
1648: }
1649: if (&Apache::lonhtmlcommon::htmlareabrowser()) {
1650: my $lang = &Apache::lonhtmlcommon::htmlarea_lang();
1651: my %textarea_args = (
1652: fullpage => 'true',
1653: dragmath => 'math',
1654: );
1655: $initialize .= &Apache::lonhtmlcommon::htmlareaselectactive(\%textarea_args);
1656: if ($context eq 'syllabus') {
1657: $init_dragmath = "editmath_visibility('filecont','none')";
1658: }
1659: }
1660: }
1661: $initialize .= (<<FULLPAGE);
1662: <script type="text/javascript">
1663: // <![CDATA[
1664: function initDocument() {
1665: resize_textarea('$textarea_id','LC_aftertextarea');
1666: $init_dragmath
1667: }
1668: // ]]>
1669: </script>
1670: FULLPAGE
1671: my $textareaclass;
1672: if ($filetype eq 'html') {
1673: if ($context eq 'syllabus') {
1674: $deps_button = &Apache::lonhtmlcommon::dependencies_button()."\n";
1675: $initialize .=
1676: &Apache::lonhtmlcommon::dependencycheck_js(undef,&mt('Syllabus'),
1677: $uri,undef,
1678: "/public/$cdom/$cnum/syllabus").
1679: "\n";
1680: if (&Apache::lonhtmlcommon::htmlareabrowser()) {
1681: $textareaclass = 'class="LC_richDefaultOn"';
1682: }
1683: } elsif ($symb || $folderpath) {
1684: $deps_button = &Apache::lonhtmlcommon::dependencies_button()."\n";
1685: $initialize .=
1686: &Apache::lonhtmlcommon::dependencycheck_js($symb,$itemtitle,
1687: undef,$folderpath,$uri)."\n";
1688: }
1689: $dragmath_button = '<span id="math_filecont">'.&Apache::lonhtmlcommon::dragmath_button('filecont',1).'</span>';
1690: $initialize .= "\n".&Apache::lonhtmlcommon::dragmath_js('EditMathPopup');
1691: }
1692: $add_to_onload = 'initDocument();';
1693: $add_to_onresize = "resize_textarea('$textarea_id','LC_aftertextarea');";
1694:
1695: if ($filetype eq 'html') {
1696: my $not_author;
1697: if ($uri =~ m{^/uploaded/}) {
1698: $not_author = 1;
1699: }
1700: $xml_help=&Apache::loncommon::helpLatexCheatsheet(undef,undef,$not_author);
1701: }
1702:
1703: my $titledisplay=&display_title();
1704: my %lt=&Apache::lonlocal::texthash('st' => 'Save and Edit',
1705: 'vi' => 'Save and View',
1706: 'dv' => 'Discard Edits and View',
1707: 'un' => 'undo',
1708: 'ed' => 'Edit');
1709: my $spelllink = &Apache::lonhtmlcommon::spelllink('xmledit','filecont');
1710: my $textarea_events = &Apache::edit::element_change_detection();
1711: my $form_events = &Apache::edit::form_change_detection();
1712: my $htmlerror;
1713: if ($filetype eq 'html') {
1714: $htmlerror=&verify_html($filecontents);
1715: if ($htmlerror) {
1716: $htmlerror='<span class="LC_error">'.$htmlerror.'</span>';
1717: }
1718: if (&Apache::lonhtmlcommon::htmlareabrowser()) {
1719: unless ($textareaclass) {
1720: $textareaclass = 'class="LC_richDefaultOff"';
1721: }
1722: }
1723: }
1724: my $undo;
1725: unless ($uri =~ m{^/uploaded/}) {
1726: $undo = '<input type="submit" name="Undo" accesskey="u" value="'.$lt{'un'}.'" />'."\n";
1727: }
1728: my $editfooter=(<<ENDFOOTER);
1729: $initialize
1730: <a name="editsection" />
1731: <form $form_events method="post" name="xmledit" action="$action">
1732: <div class="LC_edit_problem_editxml_header">
1733: <table class="LC_edit_problem_header_title"><tr><td>
1734: $filename
1735: </td><td align="right">
1736: $xml_help
1737: </td></tr>
1738: </table>
1739: <div class="LC_edit_problem_discards">
1740: <input type="submit" name="discardview" accesskey="d" value="$lt{'dv'}" />
1741: $undo $htmlerror $deps_button $dragmath_button
1742: </div>
1743: <div class="LC_edit_problem_saves">
1744: <input type="submit" name="savethisfile" accesskey="s" value="$lt{'st'}" />
1745: <input type="submit" name="viewmode" accesskey="v" value="$lt{'vi'}" />
1746: </div>
1747: </div>
1748: <textarea $textarea_events style="width:100%" cols="80" rows="44" name="filecont" id="filecont" $textareaclass>$filecontents</textarea><br />$spelllink
1749: <div id="LC_aftertextarea">
1750: <br />
1751: $titledisplay
1752: </div>
1753: </form>
1754: ENDFOOTER
1755: return ($editfooter,$add_to_onload,$add_to_onresize);;
1756: }
1757:
1758: sub get_target {
1759: my $viewgrades=&Apache::lonnet::allowed('vgr',$env{'request.course.id'});
1760: if ( $env{'request.state'} eq 'published') {
1761: if ( defined($env{'form.grade_target'})
1762: && ($viewgrades == 'F' )) {
1763: return ($env{'form.grade_target'});
1764: } elsif (defined($env{'form.grade_target'})) {
1765: if (($env{'form.grade_target'} eq 'web') ||
1766: ($env{'form.grade_target'} eq 'tex') ) {
1767: return $env{'form.grade_target'}
1768: } else {
1769: return 'web';
1770: }
1771: } else {
1772: return 'web';
1773: }
1774: } elsif ($env{'request.state'} eq 'construct') {
1775: if ( defined($env{'form.grade_target'})) {
1776: return ($env{'form.grade_target'});
1777: } else {
1778: return 'web';
1779: }
1780: } else {
1781: return 'web';
1782: }
1783: }
1784:
1785: sub handler {
1786: my $request=shift;
1787:
1788: my $target=&get_target();
1789: $Apache::lonxml::debug=$env{'user.debug'};
1790:
1791: &Apache::loncommon::content_type($request,'text/html');
1792: &Apache::loncommon::no_cache($request);
1793: if ($env{'request.state'} eq 'published') {
1794: $request->set_last_modified(&Apache::lonnet::metadata($request->uri,
1795: 'lastrevisiondate'));
1796: }
1797: # Embedded Flash movies from Camtasia served from https will not display in IE
1798: # if XML config file has expired from cache.
1799: if ($ENV{'SERVER_PORT'} == 443) {
1800: if ($request->uri =~ /\.xml$/) {
1801: my ($httpbrowser,$clientbrowser) =
1802: &Apache::loncommon::decode_user_agent($request);
1803: if ($clientbrowser =~ /^explorer$/i) {
1804: delete $request->headers_out->{'Cache-control'};
1805: delete $request->headers_out->{'Pragma'};
1806: my $expiration = time + 60;
1807: my $date=strftime("%a, %d %b %Y %H:%M:%S GMT",gmtime($expiration));
1808: $request->headers_out->set("Expires" => $date);
1809: }
1810: }
1811: }
1812: $request->send_http_header;
1813:
1814: return OK if $request->header_only;
1815:
1816:
1817: my $file=&Apache::lonnet::filelocation("",$request->uri);
1818: my ($filetype,$breadcrumbtext);
1819: if ($file =~ /\.(sty|css|js|txt|tex)$/) {
1820: $filetype=$1;
1821: } else {
1822: $filetype='html';
1823: }
1824: unless ($env{'request.uri'}) {
1825: $env{'request.uri'}=$request->uri;
1826: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
1827: ['todocs']);
1828: }
1829: my ($cdom,$cnum);
1830: if ($env{'request.course.id'}) {
1831: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
1832: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
1833: if ($filetype eq 'html') {
1834: if ($request->uri =~ m{^\Q/uploaded/$cdom/$cnum/portfolio/syllabus/\E.+$}) {
1835: if (&Apache::lonnet::allowed('mdc',$env{'request.course.id'})) {
1836: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
1837: ['editmode']);
1838: }
1839: }
1840: }
1841: }
1842: if ($filetype eq 'sty') {
1843: $breadcrumbtext = 'Style File Editor';
1844: } elsif ($filetype eq 'js') {
1845: $breadcrumbtext = 'Javascript Editor';
1846: } elsif ($filetype eq 'css') {
1847: $breadcrumbtext = 'CSS Editor';
1848: } elsif ($filetype eq 'txt') {
1849: $breadcrumbtext = 'Text Editor';
1850: } elsif ($filetype eq 'tex') {
1851: $breadcrumbtext = 'TeX Editor';
1852: } else {
1853: $breadcrumbtext = 'HTML Editor';
1854: }
1855:
1856: #
1857: # Edit action? Save file.
1858: #
1859: if (!($env{'request.state'} eq 'published')) {
1860: if ($env{'form.savethisfile'} || $env{'form.viewmode'} || $env{'form.Undo'}) {
1861: my $html_file=&Apache::lonnet::getfile($file);
1862: my $error = &Apache::lonhomework::handle_save_or_undo($request, \$html_file, \$env{'form.filecont'});
1863: if ($env{'form.savethisfile'}) {
1864: $env{'form.editmode'}='Edit'; #force edit mode
1865: }
1866: }
1867: }
1868: my $inhibit_menu;
1869: my %mystyle;
1870: my $result = '';
1871: my $filecontents=&Apache::lonnet::getfile($file);
1872: if ($filecontents eq -1) {
1873: my $start_page=&Apache::loncommon::start_page('File Error');
1874: my $end_page=&Apache::loncommon::end_page();
1875: my $errormsg='<p class="LC_error">'
1876: .&mt('File not found: [_1]'
1877: ,'<span class="LC_filename">'.$file.'</span>')
1878: .'</p>';
1879: $result=(<<ENDNOTFOUND);
1880: $start_page
1881: $errormsg
1882: $end_page
1883: ENDNOTFOUND
1884: $filecontents='';
1885: if ($env{'request.state'} ne 'published') {
1886: if ($filetype eq 'sty') {
1887: $filecontents=&createnewsty();
1888: } elsif ($filetype eq 'js') {
1889: $filecontents=&createnewjs();
1890: } elsif ($filetype ne 'css' && $filetype ne 'txt' && $filetype ne 'tex') {
1891: $filecontents=&createnewhtml();
1892: }
1893: $env{'form.editmode'}='Edit'; #force edit mode
1894: }
1895: } else {
1896: unless ($env{'request.state'} eq 'published') {
1897: if ($filecontents=~/BEGIN LON-CAPA Internal/) {
1898: &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.'));
1899: }
1900: #
1901: # we are in construction space, see if edit mode forced
1902: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
1903: ['editmode']);
1904: }
1905: if (!$env{'form.editmode'} || $env{'form.viewmode'} || $env{'form.discardview'}) {
1906: if ($filetype eq 'html' || $filetype eq 'sty') {
1907: &Apache::structuretags::reset_problem_globals();
1908: $result = &Apache::lonxml::xmlparse($request,$target,
1909: $filecontents,'',%mystyle);
1910: # .html files may contain <problem> or <Task> need to clean
1911: # up if it did
1912: &Apache::structuretags::reset_problem_globals();
1913: &Apache::lonhomework::finished_parsing();
1914: } elsif ($filetype eq 'tex') {
1915: $result = &Apache::lontexconvert::converted(\$filecontents,
1916: $env{'form.texengine'});
1917: if ($env{'form.return_only_error_and_warning_counts'}) {
1918: $result = "$errorcount:$warningcount";
1919: }
1920: } else {
1921: $result = $filecontents;
1922: }
1923: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
1924: ['rawmode']);
1925: if ($env{'form.rawmode'}) { $result = $filecontents; }
1926: if (($env{'request.state'} eq 'construct') &&
1927: (($filetype eq 'css') || ($filetype eq 'js')) && ($ENV{'HTTP_REFERER'})) {
1928: if ($ENV{'HTTP_REFERER'} =~ m{^https?\://[^\/]+/priv/$LONCAPA::match_domain/$LONCAPA::match_username/[^\?]+\.(x?html?|swf)(|\?)[^\?]*$}) {
1929: $inhibit_menu = 1;
1930: }
1931: }
1932: if (($filetype ne 'html') &&
1933: (!$env{'form.return_only_error_and_warning_counts'}) &&
1934: (!$inhibit_menu)) {
1935: my $nochgview = 1;
1936: my $controls = '';
1937: if ($env{'request.state'} eq 'construct') {
1938: $controls = &Apache::loncommon::head_subbox(
1939: &Apache::loncommon::CSTR_pageheader()
1940: .&Apache::londefdef::edit_controls($nochgview));
1941: }
1942: if ($filetype ne 'sty' && $filetype ne 'tex') {
1943: $result =~ s/</</g;
1944: $result =~ s/>/>/g;
1945: $result = '<table class="LC_sty_begin">'.
1946: '<tr><td><b><pre>'.$result.
1947: '</pre></b></td></tr></table>';
1948: }
1949: my $brcrum;
1950: if ($env{'request.state'} eq 'construct') {
1951: $brcrum = [{'href' => &Apache::loncommon::authorspace($request->uri),
1952: 'text' => 'Authoring Space'},
1953: {'href' => '',
1954: 'text' => $breadcrumbtext}];
1955: } else {
1956: $brcrum = ''; # FIXME: Where are we?
1957: }
1958: my %options = ('bread_crumbs' => $brcrum,
1959: 'bgcolor' => '#FFFFFF');
1960: $result =
1961: &Apache::loncommon::start_page(undef,undef,\%options)
1962: .$controls
1963: .$result
1964: .&Apache::loncommon::end_page();
1965: }
1966: }
1967: }
1968:
1969: #
1970: # Edit action? Insert editing commands
1971: #
1972: unless (($env{'request.state'} eq 'published') || ($inhibit_menu)) {
1973: if ($env{'form.editmode'} && (!($env{'form.viewmode'})) && (!($env{'form.discardview'})))
1974: {
1975: my ($displayfile,$url,$symb,$itemtitle,$action);
1976: $displayfile=$request->uri;
1977: if ($request->uri =~ m{^/uploaded/}) {
1978: if ($env{'request.course.id'}) {
1979: if ($request->uri =~ m{^\Q/uploaded/$cdom/$cnum/supplemental/\E}) {
1980: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
1981: ['folderpath','title']);
1982: } elsif ($request->uri =~ m{^\Q/uploaded/$cdom/$cnum/portfolio/syllabus/\E(.+)$}) {
1983: my $filename = $1;
1984: if ($1 eq 'loncapa.html') {
1985: $displayfile = &mt('Syllabus (minimal template)');
1986: $action = $request->uri.'?forceedit=1';
1987: } else {
1988: $displayfile = &mt('Syllabus file: [_1]',$1);
1989: }
1990: $itemtitle = &mt('Syllabus');
1991: }
1992: }
1993: unless ($itemtitle) {
1994: ($symb,$itemtitle,$displayfile) =
1995: &get_courseupload_hierarchy($request->uri,
1996: $env{'form.folderpath'},
1997: $env{'form.title'});
1998: }
1999: } else {
2000: $displayfile=~s/^\/[^\/]*//;
2001: }
2002:
2003: my ($edit_info, $add_to_onload, $add_to_onresize)=
2004: &inserteditinfo($filecontents,$filetype,$displayfile,$symb,
2005: $itemtitle,$env{'form.folderpath'},$request->uri,$action);
2006:
2007: my %options =
2008: ('add_entries' =>
2009: {'onresize' => $add_to_onresize,
2010: 'onload' => $add_to_onload, });
2011: my $header;
2012: if ($env{'request.state'} eq 'construct') {
2013: $options{'bread_crumbs'} = [{
2014: 'href' => &Apache::loncommon::authorspace($request->uri),
2015: 'text' => 'Authoring Space'},
2016: {'href' => '',
2017: 'text' => $breadcrumbtext}];
2018: $header = &Apache::loncommon::head_subbox(
2019: &Apache::loncommon::CSTR_pageheader());
2020: }
2021: my $js =
2022: &Apache::edit::js_change_detection().
2023: &Apache::loncommon::resize_textarea_js();
2024: my $start_page = &Apache::loncommon::start_page(undef,$js,
2025: \%options);
2026: $result = $start_page
2027: .$header
2028: .&Apache::lonxml::message_location()
2029: .$edit_info
2030: .&Apache::loncommon::end_page();
2031: }
2032: }
2033: if ($filetype eq 'html') { &writeallows($request->uri); }
2034:
2035: &Apache::lonxml::add_messages(\$result);
2036: $request->print($result);
2037:
2038: return OK;
2039: }
2040:
2041: sub display_title {
2042: my $result;
2043: if ($env{'request.state'} eq 'construct') {
2044: my $title=&Apache::lonnet::gettitle();
2045: if (!defined($title) || $title eq '') {
2046: $title = $env{'request.filename'};
2047: $title = substr($title, rindex($title, '/') + 1);
2048: }
2049: $result = "<script type='text/javascript'>top.document.title = '$title - LON-CAPA "
2050: .&mt('Authoring Space')."';</script>";
2051: }
2052: return $result;
2053: }
2054:
2055: sub get_courseupload_hierarchy {
2056: my ($url,$folderpath,$title) = @_;
2057: my ($symb,$itemtitle,$displaypath);
2058: if ($env{'request.course.id'}) {
2059: if ($folderpath =~ /^supplemental/) {
2060: my @folders = split(/\&/,$folderpath);
2061: my @pathitems;
2062: while (@folders) {
2063: my $folder=shift(@folders);
2064: my $foldername=shift(@folders);
2065: $foldername =~ s/\:(\d*)\:(\w*)\:(\w*):(\d*)\:?(\d*)$//;
2066: push(@pathitems,&unescape($foldername));
2067: }
2068: if ($title) {
2069: push(@pathitems,&unescape($title));
2070: }
2071: $displaypath = join(' » ',@pathitems);
2072: } else {
2073: $symb = &Apache::lonnet::symbread($url);
2074: my ($map,$id,$res)=&Apache::lonnet::decode_symb($symb);
2075: my $navmap=Apache::lonnavmaps::navmap->new;
2076: if (ref($navmap)) {
2077: my $res = $navmap->getBySymb($symb);
2078: if (ref($res)) {
2079: my @pathitems =
2080: &Apache::loncommon::get_folder_hierarchy($navmap,$map,1);
2081: $itemtitle = $res->compTitle();
2082: push(@pathitems,$itemtitle);
2083: $displaypath = join(' » ',@pathitems);
2084: }
2085: }
2086: }
2087: }
2088: return ($symb,$itemtitle,$displaypath);
2089: }
2090:
2091: sub debug {
2092: if ($Apache::lonxml::debug eq "1") {
2093: $|=1;
2094: my $request=$Apache::lonxml::request;
2095: if (!$request) {
2096: eval { $request=Apache->request; };
2097: }
2098: if (!$request) {
2099: eval { $request=Apache2::RequestUtil->request; };
2100: }
2101: $request->print('<font size="-2"><pre>DEBUG:'.&HTML::Entities::encode($_[0],'<>&"')."</pre></font>\n");
2102: #&Apache::lonnet::logthis($_[0]);
2103: }
2104: }
2105:
2106: sub show_error_warn_msg {
2107: if (($env{'request.filename'} eq
2108: $Apache::lonnet::perlvar{'lonDocRoot'}.'/res/lib/templates/simpleproblem.problem') &&
2109: (&Apache::lonnet::allowed('mdc',$env{'request.course.id'}))) {
2110: return 1;
2111: }
2112: return (($Apache::lonxml::debug eq 1) ||
2113: ($env{'request.state'} eq 'construct') ||
2114: ($Apache::lonhomework::browse eq 'F'
2115: &&
2116: $env{'form.show_errors'} eq 'on'));
2117: }
2118:
2119: sub error {
2120: my @errors = @_;
2121:
2122: $errorcount++;
2123:
2124: $Apache::lonxml::internal_error=1;
2125:
2126: if (defined($Apache::inputtags::part)) {
2127: if ( @Apache::inputtags::response ) {
2128: push(@errors,
2129: &mt("This error occurred while processing response [_1] in part [_2]",
2130: $Apache::inputtags::response[-1],
2131: $Apache::inputtags::part));
2132: } else {
2133: push(@errors,
2134: &mt("This error occurred while processing part [_1]",
2135: $Apache::inputtags::part));
2136: }
2137: }
2138:
2139: if ( &show_error_warn_msg() ) {
2140: # If printing in construction space, put the error inside <pre></pre>
2141: push(@Apache::lonxml::error_messages,
2142: $Apache::lonxml::warnings_error_header
2143: .'<div class="LC_error">'
2144: .'<b>'.&mt('ERROR:').' </b>'.join("<br />\n",@errors)
2145: ."</div>\n");
2146: $Apache::lonxml::warnings_error_header='';
2147: } else {
2148: my $errormsg;
2149: my ($symb)=&Apache::lonnet::symbread();
2150: if ( !$symb ) {
2151: #public or browsers
2152: $errormsg=&mt("An error occurred while processing this resource. The author has been notified.");
2153: }
2154: my $host=$Apache::lonnet::perlvar{'lonHostID'};
2155: push(@errors,
2156: &mt("The error occurred on host [_1]",
2157: "<tt>$host</tt>"));
2158:
2159: my $msg = join('<br />', @errors);
2160:
2161: #notify author
2162: &Apache::lonmsg::author_res_msg($env{'request.filename'},$msg);
2163: #notify course
2164: if ( $symb && $env{'request.course.id'} ) {
2165: my $cnum=$env{'course.'.$env{'request.course.id'}.'.num'};
2166: my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
2167: my (undef,%users)=&Apache::lonmsg::decide_receiver(undef,0,1,1,1);
2168: my $declutter=&Apache::lonnet::declutter($env{'request.filename'});
2169: my $baseurl = &Apache::lonnet::clutter($declutter);
2170: my @userlist;
2171: foreach (keys(%users)) {
2172: my ($user,$domain) = split(/:/, $_);
2173: push(@userlist,"$user:$domain");
2174: my $key=$declutter.'_'.$user.'_'.$domain;
2175: my %lastnotified=&Apache::lonnet::get('nohist_xmlerrornotifications',
2176: [$key],
2177: $cdom,$cnum);
2178: my $now=time;
2179: if ($now-$lastnotified{$key}>86400) {
2180: my $title = &Apache::lonnet::gettitle($symb);
2181: my $sentmessage;
2182: &Apache::lonmsg::user_normal_msg($user,$domain,
2183: "Error [$title]",$msg,'',$baseurl,'','',
2184: \$sentmessage,$symb,$title,1);
2185: &Apache::lonnet::put('nohist_xmlerrornotifications',
2186: {$key => $now},
2187: $cdom,$cnum);
2188: }
2189: }
2190: if ($env{'request.role.adv'}) {
2191: $errormsg=&mt("An error occurred while processing this resource. The course personnel ([_1]) and the author have been notified.",join(', ',@userlist));
2192: } else {
2193: $errormsg=&mt("An error occurred while processing this resource. The instructor has been notified.");
2194: }
2195: }
2196: push(@Apache::lonxml::error_messages,"<span class=\"LC_warning\">$errormsg</span><br />");
2197: }
2198: }
2199:
2200: sub warning {
2201: $warningcount++;
2202:
2203: if ($env{'form.grade_target'} ne 'tex') {
2204: if ( &show_error_warn_msg() ) {
2205: push(@Apache::lonxml::warning_messages,
2206: $Apache::lonxml::warnings_error_header
2207: .'<div class="LC_warning">'
2208: .&mt('[_1]W[_2]ARNING','<b>','</b>')."<b>:</b> ".join('<br />',@_)
2209: ."</div>\n"
2210: );
2211: $Apache::lonxml::warnings_error_header='';
2212: }
2213: }
2214: }
2215:
2216: sub info {
2217: if ($env{'form.grade_target'} ne 'tex'
2218: && $env{'request.state'} eq 'construct') {
2219: push(@Apache::lonxml::info_messages,join('<br />',@_)."<br />\n");
2220: }
2221: }
2222:
2223: sub message_location {
2224: return '__LONCAPA_INTERNAL_MESSAGE_LOCATION__';
2225: }
2226:
2227: sub add_messages {
2228: my ($msg)=@_;
2229: my $result=join(' ',
2230: @Apache::lonxml::info_messages,
2231: @Apache::lonxml::error_messages,
2232: @Apache::lonxml::warning_messages);
2233: undef(@Apache::lonxml::info_messages);
2234: undef(@Apache::lonxml::error_messages);
2235: undef(@Apache::lonxml::warning_messages);
2236: $$msg=~s/__LONCAPA_INTERNAL_MESSAGE_LOCATION__/$result/;
2237: $$msg=~s/__LONCAPA_INTERNAL_MESSAGE_LOCATION__//g;
2238: }
2239:
2240: sub get_param {
2241: my ($param,$parstack,$safeeval,$context,$case_insensitive, $noelide) = @_;
2242: if ( ! $context ) { $context = -1; }
2243: my $args ='';
2244: if ( $#$parstack > (-2-$context) ) { $args=$$parstack[$context]; }
2245: if ( ! $Apache::lonxml::usestyle ) {
2246: $args=$Apache::lonxml::style_values.$args;
2247: }
2248:
2249: if ($noelide) {
2250: $args =~ s/'\$/'\\\$/g;
2251: }
2252:
2253: if ( ! $args ) { return undef; }
2254: if ( $case_insensitive ) {
2255: if ($args =~ s/(my (?:.*))(\$\Q$param\E[,\)])/$1.lc($2)/ei) {
2256: return &Apache::run::run("{$args;".'return $'.$param.'}',
2257: $safeeval); #'
2258: } else {
2259: return undef;
2260: }
2261: } else {
2262: if ( $args =~ /my .*\$\Q$param\E[,\)]/ ) {
2263: return &Apache::run::run("{$args;".'return $'.$param.'}',
2264: $safeeval); #'
2265: } else {
2266: return undef;
2267: }
2268: }
2269: }
2270:
2271: sub get_param_var {
2272: my ($param,$parstack,$safeeval,$context,$case_insensitive) = @_;
2273: if ( ! $context ) { $context = -1; }
2274: my $args ='';
2275: if ( $#$parstack > (-2-$context) ) { $args=$$parstack[$context]; }
2276: if ( ! $Apache::lonxml::usestyle ) {
2277: $args=$Apache::lonxml::style_values.$args;
2278: }
2279: &Apache::lonxml::debug("Args are $args param is $param");
2280: if ($case_insensitive) {
2281: if (! ($args=~s/(my (?:.*))(\$\Q$param\E[,\)])/$1.lc($2)/ei)) {
2282: return undef;
2283: }
2284: } elsif ( $args !~ /my .*\$\Q$param\E[,\)]/ ) { return undef; }
2285: my $value=&Apache::run::run("{$args;".'return $'.$param.'}',$safeeval); #'
2286: &Apache::lonxml::debug("first run is $value");
2287: if ($value =~ /^[\$\@\%][a-zA-Z_]\w*$/) {
2288: &Apache::lonxml::debug("doing second");
2289: my @result=&Apache::run::run("return $value",$safeeval,1);
2290: if (!defined($result[0])) {
2291: return $value
2292: } else {
2293: if (wantarray) { return @result; } else { return $result[0]; }
2294: }
2295: } else {
2296: return $value;
2297: }
2298: }
2299:
2300: sub register_insert_xml {
2301: my $parser = HTML::LCParser->new($Apache::lonnet::perlvar{'lonTabDir'}
2302: .'/insertlist.xml');
2303: my ($tagnum,$in_help)=(0,0);
2304: my @alltags;
2305: my $tag;
2306: while (my $token = $parser->get_token()) {
2307: if ($token->[0] eq 'S') {
2308: my $key;
2309: if ($token->[1] eq 'tag') {
2310: $tag = $token->[2]{'name'};
2311: if (defined($tag)) {
2312: $insertlist{$tagnum.'.tag'} = $tag;
2313: $insertlist{$tag.'.num'} = $tagnum;
2314: push(@alltags,$tag);
2315: }
2316: } elsif ($in_help && $token->[1] eq 'file') {
2317: $key = $tag.'.helpfile';
2318: } elsif ($in_help && $token->[1] eq 'description') {
2319: $key = $tag.'.helpdesc';
2320: } elsif ($token->[1] eq 'description' ||
2321: $token->[1] eq 'color' ||
2322: $token->[1] eq 'show' ) {
2323: $key = $tag.'.'.$token->[1];
2324: } elsif ($token->[1] eq 'insert_sub') {
2325: $key = $tag.'.function';
2326: } elsif ($token->[1] eq 'help') {
2327: $in_help=1;
2328: } elsif ($token->[1] eq 'allow') {
2329: $key = $tag.'.allow';
2330: }
2331: if (defined($key)) {
2332: $insertlist{$key} = $parser->get_text();
2333: $insertlist{$key} =~ s/(^\s*|\s*$ )//gx;
2334: }
2335: } elsif ($token->[0] eq 'E') {
2336: if ($token->[1] eq 'tag') {
2337: undef($tag);
2338: $tagnum++;
2339: } elsif ($token->[1] eq 'help') {
2340: undef($in_help);
2341: }
2342: }
2343: }
2344:
2345: # parse the allows and ignore tags set to <show>no</show>
2346: foreach my $tag (@alltags) {
2347: next if (!exists($insertlist{$tag.'.allow'}));
2348: my $allow = $insertlist{$tag.'.allow'};
2349: foreach my $element (split(',',$allow)) {
2350: $element =~ s/(^\s*|\s*$ )//gx;
2351: if (!exists($insertlist{$element.'.show'})
2352: || $insertlist{$element.'.show'} ne 'no') {
2353: push(@{ $insertlist{$tag.'.which'} },$element);
2354: }
2355: }
2356: }
2357: }
2358:
2359: sub register_insert {
2360: return ®ister_insert_xml(@_);
2361: # &dump_insertlist('2');
2362: }
2363:
2364: sub dump_insertlist {
2365: my ($ext) = @_;
2366: open(XML,">/tmp/insertlist.xml.$ext");
2367: print XML ("<insertlist>");
2368: my $i=0;
2369:
2370: while (exists($insertlist{"$i.tag"})) {
2371: my $tag = $insertlist{"$i.tag"};
2372: print XML ("
2373: \t<tag name=\"$tag\">");
2374: if (defined($insertlist{"$tag.description"})) {
2375: print XML ("
2376: \t\t<description>".$insertlist{"$tag.description"}."</description>");
2377: }
2378: if (defined($insertlist{"$tag.color"})) {
2379: print XML ("
2380: \t\t<color>".$insertlist{"$tag.color"}."</color>");
2381: }
2382: if (defined($insertlist{"$tag.function"})) {
2383: print XML ("
2384: \t\t<insert_sub>".$insertlist{"$tag.function"}."</insert_sub>");
2385: }
2386: if (defined($insertlist{"$tag.show"})
2387: && $insertlist{"$tag.show"} ne 'yes') {
2388: print XML ("
2389: \t\t<show>".$insertlist{"$tag.show"}."</show>");
2390: }
2391: if (defined($insertlist{"$tag.helpfile"})) {
2392: print XML ("
2393: \t\t<help>
2394: \t\t\t<file>".$insertlist{"$tag.helpfile"}."</file>");
2395: if ($insertlist{"$tag.helpdesc"} ne '') {
2396: print XML ("
2397: \t\t\t<description>".$insertlist{"$tag.helpdesc"}."</description>");
2398: }
2399: print XML ("
2400: \t\t</help>");
2401: }
2402: if (defined($insertlist{"$tag.which"})) {
2403: print XML ("
2404: \t\t<allow>".join(',',sort(@{ $insertlist{"$tag.which"} }))."</allow>");
2405: }
2406: print XML ("
2407: \t</tag>");
2408: $i++;
2409: }
2410: print XML ("\n</insertlist>\n");
2411: close(XML);
2412: }
2413:
2414: sub description {
2415: my ($token)=@_;
2416: my $tag = &get_tag($token);
2417: return $insertlist{$tag.'.description'};
2418: }
2419:
2420: # Returns a list containing the help file, and the description
2421: sub helpinfo {
2422: my ($token)=@_;
2423: my $tag = &get_tag($token);
2424: return ($insertlist{$tag.'.helpfile'}, &mt($insertlist{$tag.'.helpdesc'}));
2425: }
2426:
2427: sub get_tag {
2428: my ($token)=@_;
2429: my $tagnum;
2430: my $tag=$token->[1];
2431: foreach my $namespace (reverse(@Apache::lonxml::namespace)) {
2432: my $testtag = $namespace.'::'.$tag;
2433: $tagnum = $insertlist{"$testtag.num"};
2434: last if (defined($tagnum));
2435: }
2436: if (!defined($tagnum)) {
2437: $tagnum = $Apache::lonxml::insertlist{"$tag.num"};
2438: }
2439: return $insertlist{"$tagnum.tag"};
2440: }
2441:
2442: ############################################################
2443: # PDF-FORM-METHODS
2444:
2445: =pod
2446:
2447: =item &print_pdf_radiobutton(fieldname, value)
2448:
2449: Returns a latexline to generate a PDF-Form-Radiobutton.
2450: Note: Radiobuttons with equal names are automaticly grouped
2451: in a selection-group.
2452:
2453: $fieldname: PDF internalname of the radiobutton(group)
2454: $value: Value of radiobutton
2455:
2456: =cut
2457: sub print_pdf_radiobutton {
2458: my ($fieldname, $value) = @_;
2459: return '\radioButton[\symbolchoice{circle}]{'
2460: .$fieldname.'}{10bp}{10bp}{'.$value.'}';
2461: }
2462:
2463:
2464: =pod
2465:
2466: =item &print_pdf_start_combobox(fieldname)
2467:
2468: Starts a latexline to generate a PDF-Form-Combobox with text.
2469:
2470: $fieldname: PDF internal name of the Combobox
2471:
2472: =cut
2473: sub print_pdf_start_combobox {
2474: my $result;
2475: my ($fieldName) = @_;
2476: $result .= '\begin{tabularx}{\textwidth}{p{2.5cm}X}'."\n";
2477: $result .= '\comboBox[]{'.$fieldName.'}{2.3cm}{14bp}{'; #
2478:
2479: return $result;
2480: }
2481:
2482:
2483: =pod
2484:
2485: =item &print_pdf_add_combobox_option(options)
2486:
2487: Generates a latexline to add Options to a PDF-Form-ComboBox.
2488:
2489: $option: PDF internal name of the Combobox-Option
2490:
2491: =cut
2492: sub print_pdf_add_combobox_option {
2493:
2494: my $result;
2495: my ($option) = @_;
2496:
2497: $result .= '('.$option.')';
2498:
2499: return $result;
2500: }
2501:
2502:
2503: =pod
2504:
2505: =item &print_pdf_end_combobox(text) {
2506:
2507: Returns latexcode to end a PDF-Form-Combobox with text.
2508:
2509: =cut
2510: sub print_pdf_end_combobox {
2511: my $result;
2512: my ($text) = @_;
2513:
2514: $result .= '}&'.$text."\\\\\n";
2515: $result .= '\end{tabularx}' . "\n";
2516: $result .= '\hspace{2mm}' . "\n";
2517: return $result;
2518: }
2519:
2520:
2521: =pod
2522:
2523: =item &print_pdf_hiddenField(fieldname, user, domain)
2524:
2525: Returns a latexline to generate a PDF-Form-hiddenField with userdata.
2526:
2527: $fieldname label for hiddentextfield
2528: $user: name of user
2529: $domain: domain of user
2530:
2531: =cut
2532: sub print_pdf_hiddenfield {
2533: my $result;
2534: my ($fieldname, $user, $domain) = @_;
2535:
2536: $result .= '\textField [\F{\FHidden}\F{-\FPrint}\V{'.$domain.'&'.$user.'}]{'.$fieldname.'}{0in}{0in}'."\n";
2537:
2538: return $result;
2539: }
2540:
2541: 1;
2542: __END__
2543:
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