1: # The LearningOnline Network with CAPA
2: # XML Parser Module
3: #
4: # $Id: lonxml.pm,v 1.446 2007/05/17 21:00:59 albertel 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:
41: package Apache::lonxml;
42: use vars
43: qw(@pwd @outputstack $redirection $import @extlinks $metamode $evaluate %insertlist @namespace $errorcount $warningcount);
44: use strict;
45: use LONCAPA;
46: use HTML::LCParser();
47: use HTML::TreeBuilder();
48: use HTML::Entities();
49: use Safe();
50: use Safe::Hole();
51: use Math::Cephes();
52: use Math::Random();
53: use Opcode();
54: use POSIX qw(strftime);
55: use Time::HiRes qw( gettimeofday tv_interval );
56: use Symbol();
57:
58: sub register {
59: my ($space,@taglist) = @_;
60: foreach my $temptag (@taglist) {
61: push(@{ $Apache::lonxml::alltags{$temptag} },$space);
62: }
63: }
64:
65: sub deregister {
66: my ($space,@taglist) = @_;
67: foreach my $temptag (@taglist) {
68: my $tempspace = $Apache::lonxml::alltags{$temptag}[-1];
69: if ($tempspace eq $space) {
70: pop(@{ $Apache::lonxml::alltags{$temptag} });
71: }
72: }
73: #&printalltags();
74: }
75:
76: use Apache::Constants qw(:common);
77: use Apache::lontexconvert();
78: use Apache::style();
79: use Apache::run();
80: use Apache::londefdef();
81: use Apache::scripttag();
82: use Apache::languagetags();
83: use Apache::edit();
84: use Apache::inputtags();
85: use Apache::outputtags();
86: use Apache::lonnet;
87: use Apache::File();
88: use Apache::loncommon();
89: use Apache::lonfeedback();
90: use Apache::lonmsg();
91: use Apache::loncacc();
92: use Apache::lonmaxima();
93: use Apache::lonlocal;
94:
95: #================================================== Main subroutine: xmlparse
96: #debugging control, to turn on debugging modify the correct handler
97: $Apache::lonxml::debug=0;
98:
99: # keeps count of the number of warnings and errors generated in a parse
100: $warningcount=0;
101: $errorcount=0;
102:
103: #path to the directory containing the file currently being processed
104: @pwd=();
105:
106: #these two are used for capturing a subset of the output for later processing,
107: #don't touch them directly use &startredirection and &endredirection
108: @outputstack = ();
109: $redirection = 0;
110:
111: #controls wheter the <import> tag actually does
112: $import = 1;
113: @extlinks=();
114:
115: # meta mode is a bit weird only some output is to be turned off
116: #<output> tag turns metamode off (defined in londefdef.pm)
117: $metamode = 0;
118:
119: # turns on and of run::evaluate actually derefencing var refs
120: $evaluate = 1;
121:
122: # data structure for eidt mode, determines what tags can go into what other tags
123: %insertlist=();
124:
125: # stores the list of active tag namespaces
126: @namespace=();
127:
128: # a pointer the the Apache request object
129: $Apache::lonxml::request='';
130:
131: # a problem number counter, and check on ether it is used
132: $Apache::lonxml::counter=1;
133: $Apache::lonxml::counter_changed=0;
134:
135: #internal check on whether to look at style defs
136: $Apache::lonxml::usestyle=1;
137:
138: #locations used to store the parameter string for style substitutions
139: $Apache::lonxml::style_values='';
140: $Apache::lonxml::style_end_values='';
141:
142: #array of ssi calls that need to occur after we are done parsing
143: @Apache::lonxml::ssi_info=();
144:
145: #should we do the postag variable interpolation
146: $Apache::lonxml::post_evaluate=1;
147:
148: #a header message to emit in the case of any generated warning or errors
149: $Apache::lonxml::warnings_error_header='';
150:
151: # Control whether or not LaTeX symbols should be substituted for their
152: # \ style equivalents...this may be turned off e.g. in an verbatim
153: # environment.
154:
155: $Apache::lonxml::substitute_LaTeX_symbols = 1; # Starts out on.
156:
157: sub enable_LaTeX_substitutions {
158: $Apache::lonxml::substitute_LaTeX_symbols = 1;
159: }
160: sub disable_LaTeX_substitutions {
161: $Apache::lonxml::substitute_LaTeX_symbols = 0;
162: }
163:
164: sub xmlend {
165: my ($target,$parser)=@_;
166: my $mode='xml';
167: my $status='OPEN';
168: if ($Apache::lonhomework::parsing_a_problem ||
169: $Apache::lonhomework::parsing_a_task ) {
170: $mode='problem';
171: $status=$Apache::inputtags::status[-1];
172: }
173: my $discussion;
174: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
175: ['LONCAPA_INTERNAL_no_discussion']);
176: if (! exists($env{'form.LONCAPA_INTERNAL_no_discussion'}) ||
177: $env{'form.LONCAPA_INTERNAL_no_discussion'} ne 'true') {
178: $discussion=&Apache::lonfeedback::list_discussion($mode,$status);
179: }
180: if ($target eq 'tex') {
181: $discussion.='<tex>\keephidden{ENDOFPROBLEM}\vskip 0.5mm\noindent\makebox[\textwidth/$number_of_columns][b]{\hrulefill}\end{document}</tex>';
182: &Apache::lonxml::newparser($parser,\$discussion,'');
183: return '';
184: }
185:
186: return $discussion;
187: }
188:
189: sub tokeninputfield {
190: my $defhost=$Apache::lonnet::perlvar{'lonHostID'};
191: $defhost=~tr/a-z/A-Z/;
192: return (<<ENDINPUTFIELD)
193: <script type="text/javascript">
194: function updatetoken() {
195: var comp=new Array;
196: var barcode=unescape(document.tokeninput.barcode.value);
197: comp=barcode.split('*');
198: if (typeof(comp[0])!="undefined") {
199: document.tokeninput.codeone.value=comp[0];
200: }
201: if (typeof(comp[1])!="undefined") {
202: document.tokeninput.codetwo.value=comp[1];
203: }
204: if (typeof(comp[2])!="undefined") {
205: comp[2]=comp[2].toUpperCase();
206: document.tokeninput.codethree.value=comp[2];
207: }
208: document.tokeninput.barcode.value='';
209: }
210: </script>
211: <form method="post" name="tokeninput">
212: <table border="2" bgcolor="#FFFFBB">
213: <tr><th>DocID Checkin</th></tr>
214: <tr><td>
215: <table>
216: <tr>
217: <td>Scan in Barcode</td>
218: <td><input type="text" size="22" name="barcode"
219: onChange="updatetoken()"/></td>
220: </tr>
221: <tr><td><i>or</i> Type in DocID</td>
222: <td>
223: <input type="text" size="5" name="codeone" />
224: <b><font size="+2">*</font></b>
225: <input type="text" size="5" name="codetwo" />
226: <b><font size="+2">*</font></b>
227: <input type="text" size="10" name="codethree" value="$defhost"
228: onChange="this.value=this.value.toUpperCase()" />
229: </td></tr>
230: </table>
231: </td></tr>
232: <tr><td><input type="submit" value="Check in DocID" /></td></tr>
233: </table>
234: </form>
235: ENDINPUTFIELD
236: }
237:
238: sub maketoken {
239: my ($symb,$tuname,$tudom,$tcrsid)=@_;
240: unless ($symb) {
241: $symb=&Apache::lonnet::symbread();
242: }
243: unless ($tuname) {
244: $tuname=$env{'user.name'};
245: $tudom=$env{'user.domain'};
246: $tcrsid=$env{'request.course.id'};
247: }
248:
249: return &Apache::lonnet::checkout($symb,$tuname,$tudom,$tcrsid);
250: }
251:
252: sub printtokenheader {
253: my ($target,$token,$tsymb,$tcrsid,$tudom,$tuname)=@_;
254: unless ($token) { return ''; }
255:
256: my ($symb,$courseid,$domain,$name) = &Apache::lonnet::whichuser();
257: unless ($tsymb) {
258: $tsymb=$symb;
259: }
260: unless ($tuname) {
261: $tuname=$name;
262: $tudom=$domain;
263: $tcrsid=$courseid;
264: }
265:
266: my $plainname=&Apache::loncommon::plainname($tuname,$tudom);
267:
268: if ($target eq 'web') {
269: my %idhash=&Apache::lonnet::idrget($tudom,($tuname));
270: return
271: '<img align="right" src="/cgi-bin/barcode.png?encode='.$token.'" />'.
272: &mt('Checked out for').' '.$plainname.
273: '<br />'.&mt('User').': '.$tuname.' at '.$tudom.
274: '<br />'.&mt('ID').': '.$idhash{$tuname}.
275: '<br />'.&mt('CourseID').': '.$tcrsid.
276: '<br />'.&mt('Course').': '.$env{'course.'.$tcrsid.'.description'}.
277: '<br />'.&mt('DocID').': '.$token.
278: '<br />'.&mt('Time').': '.&Apache::lonlocal::locallocaltime().'<hr />';
279: } else {
280: return $token;
281: }
282: }
283:
284: sub printalltags {
285: my $temp;
286: foreach $temp (sort keys %Apache::lonxml::alltags) {
287: &Apache::lonxml::debug("$temp -- ".
288: join(',',@{ $Apache::lonxml::alltags{$temp} }));
289: }
290: }
291:
292: sub xmlparse {
293: my ($request,$target,$content_file_string,$safeinit,%style_for_target) = @_;
294:
295: &setup_globals($request,$target);
296: &Apache::inputtags::initialize_inputtags();
297: &Apache::bridgetask::initialize_bridgetask();
298: &Apache::outputtags::initialize_outputtags();
299: &Apache::edit::initialize_edit();
300: &Apache::londefdef::initialize_londefdef();
301:
302: #
303: # do we have a course style file?
304: #
305:
306: if ($env{'request.course.id'} && $env{'request.state'} ne 'construct') {
307: my $bodytext=
308: $env{'course.'.$env{'request.course.id'}.'.default_xml_style'};
309: if ($bodytext) {
310: foreach my $file (split(',',$bodytext)) {
311: my $location=&Apache::lonnet::filelocation('',$file);
312: my $styletext=&Apache::lonnet::getfile($location);
313: if ($styletext ne '-1') {
314: %style_for_target = (%style_for_target,
315: &Apache::style::styleparser($target,$styletext));
316: }
317: }
318: }
319: } elsif ($env{'construct.style'} && ($env{'request.state'} eq 'construct')) {
320: my $location=&Apache::lonnet::filelocation('',$env{'construct.style'});
321: my $styletext=&Apache::lonnet::getfile($location);
322: if ($styletext ne '-1') {
323: %style_for_target = (%style_for_target,
324: &Apache::style::styleparser($target,$styletext));
325: }
326: }
327: #&printalltags();
328: my @pars = ();
329: my $pwd=$env{'request.filename'};
330: $pwd =~ s:/[^/]*$::;
331: &newparser(\@pars,\$content_file_string,$pwd);
332:
333: my $safeeval = new Safe;
334: my $safehole = new Safe::Hole;
335: &init_safespace($target,$safeeval,$safehole,$safeinit);
336: #-------------------- Redefinition of the target in the case of compound target
337:
338: ($target, my @tenta) = split('&&',$target);
339:
340: my @stack = ();
341: my @parstack = ();
342: &initdepth();
343: &init_alarm();
344: my $finaloutput = &inner_xmlparse($target,\@stack,\@parstack,\@pars,
345: $safeeval,\%style_for_target,1);
346:
347: if (@stack) {
348: &warning("At end of file some tags were still left unclosed, ".
349: '<tt><'.join('></tt>, <tt><',reverse(@stack)).
350: '></tt>');
351: }
352: if ($env{'request.uri'}) {
353: &writeallows($env{'request.uri'});
354: }
355: &do_registered_ssi();
356: if ($Apache::lonxml::counter_changed) { &store_counter() }
357:
358: &clean_safespace($safeeval);
359:
360: if ($env{'form.return_only_error_and_warning_counts'}) {
361: return "$errorcount:$warningcount";
362: }
363: return $finaloutput;
364: }
365:
366: sub latex_special_symbols {
367: my ($string,$where)=@_;
368: #
369: # If e.g. in verbatim mode, then don't substitute.
370: # but return original string.
371: #
372: if (!($Apache::lonxml::substitute_LaTeX_symbols)) {
373: return $string;
374: }
375: if ($where eq 'header') {
376: $string =~ s/\\/\$\\backslash\$/g; # \ -> $\backslash$ per LaTex line by line pg 10.
377: $string =~ s/(\$|%|\{|\})/\\$1/g;
378: $string=&Apache::lonprintout::character_chart($string);
379: # any & or # leftover should be safe to just escape
380: $string=~s/([^\\])\&/$1\\\&/g;
381: $string=~s/([^\\])\#/$1\\\#/g;
382: $string =~ s/_/\\_/g; # _ -> \_
383: $string =~ s/\^/\\\^{}/g; # ^ -> \^{}
384: } else {
385: $string=~s/\\/\\ensuremath{\\backslash}/g;
386: $string=~s/\\\%|\%/\\\%/g;
387: $string=~s/\\{|{/\\{/g;
388: $string=~s/\\}|}/\\}/g;
389: $string=~s/\\ensuremath\\{\\backslash\\}/\\ensuremath{\\backslash}/g;
390: $string=~s/\\\$|\$/\\\$/g;
391: $string=~s/\\\_|\_/\\\_/g;
392: $string=~s/([^\\]|^)(\~|\^)/$1\\$2\\strut /g;
393: $string=~s/(>|<)/\\ensuremath\{$1\}/g; #more or less
394: $string=&Apache::lonprintout::character_chart($string);
395: # any & or # leftover should be safe to just escape
396: $string=~s/\\\&|\&/\\\&/g;
397: $string=~s/\\\#|\#/\\\#/g;
398: $string=~s/\|/\$\\mid\$/g;
399: #single { or } How to escape?
400: }
401: return $string;
402: }
403:
404: sub inner_xmlparse {
405: my ($target,$stack,$parstack,$pars,$safeeval,$style_for_target,$start)=@_;
406: my $finaloutput = '';
407: my $result;
408: my $token;
409: my $dontpop=0;
410: my $startredirection = $Apache::lonxml::redirection;
411: while ( $#$pars > -1 ) {
412: while ($token = $$pars['-1']->get_token) {
413: if (($token->[0] eq 'T') || ($token->[0] eq 'C') ) {
414: if ($metamode<1) {
415: my $text=$token->[1];
416: if ($token->[0] eq 'C' && $target eq 'tex') {
417: $text = '';
418: # $text = '%'.$text."\n";
419: }
420: $result.=$text;
421: }
422: } elsif (($token->[0] eq 'D')) {
423: if ($metamode<1 && $target eq 'web') {
424: my $text=$token->[1];
425: $result.=$text;
426: }
427: } elsif ($token->[0] eq 'PI') {
428: if ($metamode<1 && $target eq 'web') {
429: $result=$token->[2];
430: }
431: } elsif ($token->[0] eq 'S') {
432: # add tag to stack
433: push (@$stack,$token->[1]);
434: # add parameters list to another stack
435: push (@$parstack,&parstring($token));
436: &increasedepth($token);
437: if ($Apache::lonxml::usestyle &&
438: exists($$style_for_target{$token->[1]})) {
439: $Apache::lonxml::usestyle=0;
440: my $string=$$style_for_target{$token->[1]}.
441: '<LONCAPA_INTERNAL_TURN_STYLE_ON />';
442: &Apache::lonxml::newparser($pars,\$string);
443: $Apache::lonxml::style_values=$$parstack[-1];
444: $Apache::lonxml::style_end_values=$$parstack[-1];
445: } else {
446: $result = &callsub("start_$token->[1]", $target, $token, $stack,
447: $parstack, $pars, $safeeval, $style_for_target);
448: }
449: } elsif ($token->[0] eq 'E') {
450: if ($Apache::lonxml::usestyle &&
451: exists($$style_for_target{'/'."$token->[1]"})) {
452: $Apache::lonxml::usestyle=0;
453: my $string=$$style_for_target{'/'.$token->[1]}.
454: '<LONCAPA_INTERNAL_TURN_STYLE_ON end="'.$token->[1].'" />';
455: &Apache::lonxml::newparser($pars,\$string);
456: $Apache::lonxml::style_values=$Apache::lonxml::style_end_values;
457: $Apache::lonxml::style_end_values='';
458: $dontpop=1;
459: } else {
460: #clear out any tags that didn't end
461: while ($token->[1] ne $$stack['-1'] && ($#$stack > -1)) {
462: my $lasttag=$$stack[-1];
463: if ($token->[1] =~ /^\Q$lasttag\E$/i) {
464: &Apache::lonxml::warning('Using tag </'.$token->[1].'> on line '.$token->[3].' as end tag to <'.$$stack[-1].'>');
465: last;
466: } else {
467: &Apache::lonxml::warning('Found tag </'.$token->[1].'> on line '.$token->[3].' when looking for </'.$$stack[-1].'> in file');
468: &end_tag($stack,$parstack,$token);
469: }
470: }
471: $result = &callsub("end_$token->[1]", $target, $token, $stack,
472: $parstack, $pars,$safeeval, $style_for_target);
473: }
474: } else {
475: &Apache::lonxml::error("Unknown token event :$token->[0]:$token->[1]:");
476: }
477: #evaluate variable refs in result
478: if ($Apache::lonxml::post_evaluate &&$result ne "") {
479: my $extras;
480: if (!$Apache::lonxml::usestyle) {
481: $extras=$Apache::lonxml::style_values;
482: }
483: if ( $#$parstack > -1 ) {
484: $result=&Apache::run::evaluate($result,$safeeval,$extras.$$parstack[-1]);
485: } else {
486: $result= &Apache::run::evaluate($result,$safeeval,$extras);
487: }
488: }
489: $Apache::lonxml::post_evaluate=1;
490:
491: if (($token->[0] eq 'T') || ($token->[0] eq 'C') || ($token->[0] eq 'D') ) {
492: #Style file definitions should be correct
493: if ($target eq 'tex' && ($Apache::lonxml::usestyle)) {
494: $result=&latex_special_symbols($result);
495: }
496: }
497:
498: if ($Apache::lonxml::redirection) {
499: $Apache::lonxml::outputstack['-1'] .= $result;
500: } else {
501: $finaloutput.=$result;
502: }
503: $result = '';
504:
505: if ($token->[0] eq 'E' && !$dontpop) {
506: &end_tag($stack,$parstack,$token);
507: }
508: $dontpop=0;
509: }
510: if ($#$pars > -1) {
511: pop @$pars;
512: pop @Apache::lonxml::pwd;
513: }
514: }
515:
516: # if ($target eq 'meta') {
517: # $finaloutput.=&endredirection;
518: # }
519:
520: if ( $start && $target eq 'grade') { &endredirection(); }
521: if ( $Apache::lonxml::redirection > $startredirection) {
522: while ($Apache::lonxml::redirection > $startredirection) {
523: $finaloutput .= &endredirection();
524: }
525: }
526: if (($ENV{'QUERY_STRING'}) && ($target eq 'web')) {
527: $finaloutput=&afterburn($finaloutput);
528: }
529: return $finaloutput;
530: }
531:
532: ##
533: ## Looks to see if there is a subroutine defined for this tag. If so, call it,
534: ## otherwise do not call it as we do not know what it is.
535: ##
536: sub callsub {
537: my ($sub,$target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
538: my $currentstring='';
539: my $nodefault;
540: {
541: my $sub1;
542: no strict 'refs';
543: my $tag=$token->[1];
544: # get utterly rid of extended html tags
545: if ($tag=~/^x\-/i) { return ''; }
546: my $space=$Apache::lonxml::alltags{$tag}[-1];
547: if (!$space) {
548: $tag=~tr/A-Z/a-z/;
549: $sub=~tr/A-Z/a-z/;
550: $space=$Apache::lonxml::alltags{$tag}[-1]
551: }
552:
553: my $deleted=0;
554: if (($token->[0] eq 'S') && ($target eq 'modified')) {
555: $deleted=&Apache::edit::handle_delete($space,$target,$token,$tagstack,
556: $parstack,$parser,$safeeval,
557: $style);
558: }
559: if (!$deleted) {
560: if ($space) {
561: #&Apache::lonxml::debug("Calling sub $sub in $space $metamode");
562: $sub1="$space\:\:$sub";
563: ($currentstring,$nodefault) = &$sub1($target,$token,$tagstack,
564: $parstack,$parser,$safeeval,
565: $style);
566: } else {
567: if ($target eq 'tex') {
568: # throw away tag name
569: return '';
570: }
571: #&Apache::lonxml::debug("NOT Calling sub $sub in $space $metamode");
572: if ($metamode <1) {
573: if (defined($token->[4]) && ($metamode < 1)) {
574: $currentstring = $token->[4];
575: } else {
576: $currentstring = $token->[2];
577: }
578: }
579: }
580: # &Apache::lonxml::debug("nodefalt:$nodefault:");
581: if ($currentstring eq '' && $nodefault eq '') {
582: if ($target eq 'edit') {
583: #&Apache::lonxml::debug("doing default edit for $token->[1]");
584: if ($token->[0] eq 'S') {
585: $currentstring = &Apache::edit::tag_start($target,$token);
586: } elsif ($token->[0] eq 'E') {
587: $currentstring = &Apache::edit::tag_end($target,$token);
588: }
589: }
590: }
591: if ($target eq 'modified' && $nodefault eq '') {
592: if ($currentstring eq '') {
593: if ($token->[0] eq 'S') {
594: $currentstring = $token->[4];
595: } elsif ($token->[0] eq 'E') {
596: $currentstring = $token->[2];
597: } else {
598: $currentstring = $token->[2];
599: }
600: }
601: if ($token->[0] eq 'S') {
602: $currentstring.=&Apache::edit::handle_insert();
603: } elsif ($token->[0] eq 'E') {
604: $currentstring.=&Apache::edit::handle_insertafter($token->[1]);
605: }
606: }
607: }
608: use strict 'refs';
609: }
610: return $currentstring;
611: }
612:
613: sub setup_globals {
614: my ($request,$target)=@_;
615: $Apache::lonxml::request=$request;
616: $errorcount=0;
617: $warningcount=0;
618: $Apache::lonxml::default_homework_loaded=0;
619: $Apache::lonxml::usestyle=1;
620: &init_counter();
621: @Apache::lonxml::pwd=();
622: @Apache::lonxml::extlinks=();
623: @Apache::lonxml::ssi_info=();
624: $Apache::lonxml::post_evaluate=1;
625: $Apache::lonxml::warnings_error_header='';
626: $Apache::lonxml::substitute_LaTeX_symbols = 1;
627: if ($target eq 'meta') {
628: $Apache::lonxml::redirection = 0;
629: $Apache::lonxml::metamode = 1;
630: $Apache::lonxml::evaluate = 1;
631: $Apache::lonxml::import = 0;
632: } elsif ($target eq 'answer') {
633: $Apache::lonxml::redirection = 0;
634: $Apache::lonxml::metamode = 1;
635: $Apache::lonxml::evaluate = 1;
636: $Apache::lonxml::import = 1;
637: } elsif ($target eq 'grade') {
638: &startredirection(); #ended in inner_xmlparse on exit
639: $Apache::lonxml::metamode = 0;
640: $Apache::lonxml::evaluate = 1;
641: $Apache::lonxml::import = 1;
642: } elsif ($target eq 'modified') {
643: $Apache::lonxml::redirection = 0;
644: $Apache::lonxml::metamode = 0;
645: $Apache::lonxml::evaluate = 0;
646: $Apache::lonxml::import = 0;
647: } elsif ($target eq 'edit') {
648: $Apache::lonxml::redirection = 0;
649: $Apache::lonxml::metamode = 0;
650: $Apache::lonxml::evaluate = 0;
651: $Apache::lonxml::import = 0;
652: } elsif ($target eq 'analyze') {
653: $Apache::lonxml::redirection = 0;
654: $Apache::lonxml::metamode = 0;
655: $Apache::lonxml::evaluate = 1;
656: $Apache::lonxml::import = 1;
657: } else {
658: $Apache::lonxml::redirection = 0;
659: $Apache::lonxml::metamode = 0;
660: $Apache::lonxml::evaluate = 1;
661: $Apache::lonxml::import = 1;
662: }
663: }
664:
665: sub init_safespace {
666: my ($target,$safeeval,$safehole,$safeinit) = @_;
667: $safeeval->deny_only(':dangerous');
668: $safeeval->reval('use Math::Complex;');
669: $safeeval->permit_only(":default");
670: $safeeval->permit("entereval");
671: $safeeval->permit(":base_math");
672: $safeeval->permit("sort");
673: $safeeval->permit("time");
674: $safeeval->deny("rand");
675: $safeeval->deny("srand");
676: $safeeval->deny(":base_io");
677: $safehole->wrap(\&Apache::scripttag::xmlparse,$safeeval,'&xmlparse');
678: $safehole->wrap(\&Apache::outputtags::multipart,$safeeval,'&multipart');
679: $safehole->wrap(\&Apache::lonnet::EXT,$safeeval,'&EXT');
680: $safehole->wrap(\&Apache::chemresponse::chem_standard_order,$safeeval,
681: '&chem_standard_order');
682: $safehole->wrap(\&Apache::response::check_status,$safeeval,'&check_status');
683:
684: $safehole->wrap(\&Apache::lonmaxima::maxima_eval,$safeeval,'&maxima_eval');
685: $safehole->wrap(\&Apache::lonmaxima::maxima_check,$safeeval,'&maxima_check');
686: $safehole->wrap(\&Apache::lonmaxima::maxima_cas_formula_fix,$safeeval,
687: '&maxima_cas_formula_fix');
688:
689: $safehole->wrap(\&Apache::caparesponse::capa_formula_fix,$safeeval,
690: '&capa_formula_fix');
691:
692: $safehole->wrap(\&Math::Cephes::asin,$safeeval,'&asin');
693: $safehole->wrap(\&Math::Cephes::acos,$safeeval,'&acos');
694: $safehole->wrap(\&Math::Cephes::atan,$safeeval,'&atan');
695: $safehole->wrap(\&Math::Cephes::sinh,$safeeval,'&sinh');
696: $safehole->wrap(\&Math::Cephes::cosh,$safeeval,'&cosh');
697: $safehole->wrap(\&Math::Cephes::tanh,$safeeval,'&tanh');
698: $safehole->wrap(\&Math::Cephes::asinh,$safeeval,'&asinh');
699: $safehole->wrap(\&Math::Cephes::acosh,$safeeval,'&acosh');
700: $safehole->wrap(\&Math::Cephes::atanh,$safeeval,'&atanh');
701: $safehole->wrap(\&Math::Cephes::erf,$safeeval,'&erf');
702: $safehole->wrap(\&Math::Cephes::erfc,$safeeval,'&erfc');
703: $safehole->wrap(\&Math::Cephes::j0,$safeeval,'&j0');
704: $safehole->wrap(\&Math::Cephes::j1,$safeeval,'&j1');
705: $safehole->wrap(\&Math::Cephes::jn,$safeeval,'&jn');
706: $safehole->wrap(\&Math::Cephes::jv,$safeeval,'&jv');
707: $safehole->wrap(\&Math::Cephes::y0,$safeeval,'&y0');
708: $safehole->wrap(\&Math::Cephes::y1,$safeeval,'&y1');
709: $safehole->wrap(\&Math::Cephes::yn,$safeeval,'&yn');
710: $safehole->wrap(\&Math::Cephes::yv,$safeeval,'&yv');
711:
712: $safehole->wrap(\&Math::Cephes::bdtr ,$safeeval,'&bdtr' );
713: $safehole->wrap(\&Math::Cephes::bdtrc ,$safeeval,'&bdtrc' );
714: $safehole->wrap(\&Math::Cephes::bdtri ,$safeeval,'&bdtri' );
715: $safehole->wrap(\&Math::Cephes::btdtr ,$safeeval,'&btdtr' );
716: $safehole->wrap(\&Math::Cephes::chdtr ,$safeeval,'&chdtr' );
717: $safehole->wrap(\&Math::Cephes::chdtrc,$safeeval,'&chdtrc');
718: $safehole->wrap(\&Math::Cephes::chdtri,$safeeval,'&chdtri');
719: $safehole->wrap(\&Math::Cephes::fdtr ,$safeeval,'&fdtr' );
720: $safehole->wrap(\&Math::Cephes::fdtrc ,$safeeval,'&fdtrc' );
721: $safehole->wrap(\&Math::Cephes::fdtri ,$safeeval,'&fdtri' );
722: $safehole->wrap(\&Math::Cephes::gdtr ,$safeeval,'&gdtr' );
723: $safehole->wrap(\&Math::Cephes::gdtrc ,$safeeval,'&gdtrc' );
724: $safehole->wrap(\&Math::Cephes::nbdtr ,$safeeval,'&nbdtr' );
725: $safehole->wrap(\&Math::Cephes::nbdtrc,$safeeval,'&nbdtrc');
726: $safehole->wrap(\&Math::Cephes::nbdtri,$safeeval,'&nbdtri');
727: $safehole->wrap(\&Math::Cephes::ndtr ,$safeeval,'&ndtr' );
728: $safehole->wrap(\&Math::Cephes::ndtri ,$safeeval,'&ndtri' );
729: $safehole->wrap(\&Math::Cephes::pdtr ,$safeeval,'&pdtr' );
730: $safehole->wrap(\&Math::Cephes::pdtrc ,$safeeval,'&pdtrc' );
731: $safehole->wrap(\&Math::Cephes::pdtri ,$safeeval,'&pdtri' );
732: $safehole->wrap(\&Math::Cephes::stdtr ,$safeeval,'&stdtr' );
733: $safehole->wrap(\&Math::Cephes::stdtri,$safeeval,'&stdtri');
734:
735: $safehole->wrap(\&Math::Cephes::Matrix::mat,$safeeval,'&mat');
736: $safehole->wrap(\&Math::Cephes::Matrix::new,$safeeval,
737: '&Math::Cephes::Matrix::new');
738: $safehole->wrap(\&Math::Cephes::Matrix::coef,$safeeval,
739: '&Math::Cephes::Matrix::coef');
740: $safehole->wrap(\&Math::Cephes::Matrix::clr,$safeeval,
741: '&Math::Cephes::Matrix::clr');
742: $safehole->wrap(\&Math::Cephes::Matrix::add,$safeeval,
743: '&Math::Cephes::Matrix::add');
744: $safehole->wrap(\&Math::Cephes::Matrix::sub,$safeeval,
745: '&Math::Cephes::Matrix::sub');
746: $safehole->wrap(\&Math::Cephes::Matrix::mul,$safeeval,
747: '&Math::Cephes::Matrix::mul');
748: $safehole->wrap(\&Math::Cephes::Matrix::div,$safeeval,
749: '&Math::Cephes::Matrix::div');
750: $safehole->wrap(\&Math::Cephes::Matrix::inv,$safeeval,
751: '&Math::Cephes::Matrix::inv');
752: $safehole->wrap(\&Math::Cephes::Matrix::transp,$safeeval,
753: '&Math::Cephes::Matrix::transp');
754: $safehole->wrap(\&Math::Cephes::Matrix::simq,$safeeval,
755: '&Math::Cephes::Matrix::simq');
756: $safehole->wrap(\&Math::Cephes::Matrix::mat_to_vec,$safeeval,
757: '&Math::Cephes::Matrix::mat_to_vec');
758: $safehole->wrap(\&Math::Cephes::Matrix::vec_to_mat,$safeeval,
759: '&Math::Cephes::Matrix::vec_to_mat');
760: $safehole->wrap(\&Math::Cephes::Matrix::check,$safeeval,
761: '&Math::Cephes::Matrix::check');
762: $safehole->wrap(\&Math::Cephes::Matrix::check,$safeeval,
763: '&Math::Cephes::Matrix::check');
764:
765: # $safehole->wrap(\&Math::Cephes::new_fract,$safeeval,'&new_fract');
766: # $safehole->wrap(\&Math::Cephes::radd,$safeeval,'&radd');
767: # $safehole->wrap(\&Math::Cephes::rsub,$safeeval,'&rsub');
768: # $safehole->wrap(\&Math::Cephes::rmul,$safeeval,'&rmul');
769: # $safehole->wrap(\&Math::Cephes::rdiv,$safeeval,'&rdiv');
770: # $safehole->wrap(\&Math::Cephes::euclid,$safeeval,'&euclid');
771:
772: $safehole->wrap(\&Math::Random::random_beta,$safeeval,'&math_random_beta');
773: $safehole->wrap(\&Math::Random::random_chi_square,$safeeval,'&math_random_chi_square');
774: $safehole->wrap(\&Math::Random::random_exponential,$safeeval,'&math_random_exponential');
775: $safehole->wrap(\&Math::Random::random_f,$safeeval,'&math_random_f');
776: $safehole->wrap(\&Math::Random::random_gamma,$safeeval,'&math_random_gamma');
777: $safehole->wrap(\&Math::Random::random_multivariate_normal,$safeeval,'&math_random_multivariate_normal');
778: $safehole->wrap(\&Math::Random::random_multinomial,$safeeval,'&math_random_multinomial');
779: $safehole->wrap(\&Math::Random::random_noncentral_chi_square,$safeeval,'&math_random_noncentral_chi_square');
780: $safehole->wrap(\&Math::Random::random_noncentral_f,$safeeval,'&math_random_noncentral_f');
781: $safehole->wrap(\&Math::Random::random_normal,$safeeval,'&math_random_normal');
782: $safehole->wrap(\&Math::Random::random_permutation,$safeeval,'&math_random_permutation');
783: $safehole->wrap(\&Math::Random::random_permuted_index,$safeeval,'&math_random_permuted_index');
784: $safehole->wrap(\&Math::Random::random_uniform,$safeeval,'&math_random_uniform');
785: $safehole->wrap(\&Math::Random::random_poisson,$safeeval,'&math_random_poisson');
786: $safehole->wrap(\&Math::Random::random_uniform_integer,$safeeval,'&math_random_uniform_integer');
787: $safehole->wrap(\&Math::Random::random_negative_binomial,$safeeval,'&math_random_negative_binomial');
788: $safehole->wrap(\&Math::Random::random_binomial,$safeeval,'&math_random_binomial');
789: $safehole->wrap(\&Math::Random::random_seed_from_phrase,$safeeval,'&random_seed_from_phrase');
790: $safehole->wrap(\&Math::Random::random_set_seed_from_phrase,$safeeval,'&random_set_seed_from_phrase');
791: $safehole->wrap(\&Math::Random::random_get_seed,$safeeval,'&random_get_seed');
792: $safehole->wrap(\&Math::Random::random_set_seed,$safeeval,'&random_set_seed');
793: $safehole->wrap(\&Apache::lonxml::error,$safeeval,'&LONCAPA_INTERNAL_ERROR');
794: $safehole->wrap(\&Apache::lonxml::debug,$safeeval,'&LONCAPA_INTERNAL_DEBUG');
795: $safehole->wrap(\&Apache::lonnet::logthis,$safeeval,'&LONCAPA_INTERNAL_LOGTHIS');
796: $safehole->wrap(\&Apache::inputtags::finalizeawards,$safeeval,'&LONCAPA_INTERNAL_FINALIZEAWARDS');
797: $safehole->wrap(\&Apache::caparesponse::get_sigrange,$safeeval,'&LONCAPA_INTERNAL_get_sigrange');
798: # use Data::Dumper;
799: # $safehole->wrap(\&Data::Dumper::Dumper,$safeeval,'&LONCAPA_INTERNAL_Dumper');
800: #need to inspect this class of ops
801: # $safeeval->deny(":base_orig");
802: $safeeval->permit("require");
803: $safeinit .= ';$external::target="'.$target.'";';
804: &Apache::run::run($safeinit,$safeeval);
805: &initialize_rndseed($safeeval);
806: }
807:
808: sub clean_safespace {
809: my ($safeeval) = @_;
810: delete_package_recurse($safeeval->{Root});
811: }
812:
813: sub delete_package_recurse {
814: my ($package) = @_;
815: my @subp;
816: {
817: no strict 'refs';
818: while (my ($key,$val) = each(%{*{"$package\::"}})) {
819: if (!defined($val)) { next; }
820: local (*ENTRY) = $val;
821: if (defined *ENTRY{HASH} && $key =~ /::$/ &&
822: $key ne "main::" && $key ne "<none>::")
823: {
824: my ($p) = $package ne "main" ? "$package\::" : "";
825: ($p .= $key) =~ s/::$//;
826: push(@subp,$p);
827: }
828: }
829: }
830: foreach my $p (@subp) {
831: delete_package_recurse($p);
832: }
833: Symbol::delete_package($package);
834: }
835:
836: sub initialize_rndseed {
837: my ($safeeval)=@_;
838: my $rndseed;
839: my ($symb,$courseid,$domain,$name) = &Apache::lonnet::whichuser();
840: $rndseed=&Apache::lonnet::rndseed($symb,$courseid,$domain,$name);
841: my $safeinit = '$external::randomseed="'.$rndseed.'";';
842: &Apache::lonxml::debug("Setting rndseed to $rndseed");
843: &Apache::run::run($safeinit,$safeeval);
844: }
845:
846: sub default_homework_load {
847: my ($safeeval)=@_;
848: &Apache::lonxml::debug('Loading default_homework');
849: my $default=&Apache::lonnet::getfile('/home/httpd/html/res/adm/includes/default_homework.lcpm');
850: if ($default eq -1) {
851: &Apache::lonxml::error("<b>Unable to find <i>default_homework.lcpm</i></b>");
852: } else {
853: &Apache::run::run($default,$safeeval);
854: $Apache::lonxml::default_homework_loaded=1;
855: }
856: }
857:
858: {
859: my $alarm_depth;
860: sub init_alarm {
861: alarm(0);
862: $alarm_depth=0;
863: }
864:
865: sub start_alarm {
866: if ($alarm_depth<1) {
867: my $old=alarm($Apache::lonnet::perlvar{'lonScriptTimeout'});
868: if ($old) {
869: &Apache::lonxml::error("Cancelled an alarm of $old, this shouldn't occur.");
870: }
871: }
872: $alarm_depth++;
873: }
874:
875: sub end_alarm {
876: $alarm_depth--;
877: if ($alarm_depth<1) { alarm(0); }
878: }
879: }
880: my $metamode_was;
881: sub startredirection {
882: if (!$Apache::lonxml::redirection) {
883: $metamode_was=$Apache::lonxml::metamode;
884: }
885: $Apache::lonxml::metamode=0;
886: $Apache::lonxml::redirection++;
887: push (@Apache::lonxml::outputstack, '');
888: }
889:
890: sub endredirection {
891: if (!$Apache::lonxml::redirection) {
892: &Apache::lonxml::error("Endredirection was called before a startredirection, perhaps you have unbalanced tags. Some debugging information:".join ":",caller);
893: return '';
894: }
895: $Apache::lonxml::redirection--;
896: if (!$Apache::lonxml::redirection) {
897: $Apache::lonxml::metamode=$metamode_was;
898: }
899: pop @Apache::lonxml::outputstack;
900: }
901:
902: sub end_tag {
903: my ($tagstack,$parstack,$token)=@_;
904: pop(@$tagstack);
905: pop(@$parstack);
906: &decreasedepth($token);
907: }
908:
909: sub initdepth {
910: @Apache::lonxml::depthcounter=();
911: undef($Apache::lonxml::last_depth_count);
912: }
913:
914:
915: my @timers;
916: my $lasttime;
917: # @Apache::lonxml::depthcounter -> count of tags that exist so
918: # far at each level
919: # $Apache::lonxml::last_depth_count -> when ascending, need to
920: # remember the count for the level below the current level (for
921: # example going from 1_2 -> 1 -> 1_3 need to remember the 2 )
922:
923: sub increasedepth {
924: my ($token) = @_;
925: push(@Apache::lonxml::depthcounter,$Apache::lonxml::last_depth_count+1);
926: undef($Apache::lonxml::last_depth_count);
927: my $time;
928: if ($Apache::lonxml::debug eq "1") {
929: push(@timers,[&gettimeofday()]);
930: $time=&tv_interval($lasttime);
931: $lasttime=[&gettimeofday()];
932: }
933: my $spacing=' 'x($#Apache::lonxml::depthcounter);
934: $Apache::lonxml::curdepth=join('_',@Apache::lonxml::depthcounter);
935: # &Apache::lonxml::debug("s$spacing$Apache::lonxml::depth : $Apache::lonxml::olddepth : $Apache::lonxml::curdepth : $token->[1] : $time");
936: #print "<br />s $Apache::lonxml::depth : $Apache::lonxml::olddepth : $curdepth : $token->[1]\n";
937: }
938:
939: sub decreasedepth {
940: my ($token) = @_;
941: if ( $#Apache::lonxml::depthcounter == -1) {
942: &Apache::lonxml::warning(&mt("Missing tags, unable to properly run file."));
943: }
944: $Apache::lonxml::last_depth_count = pop(@Apache::lonxml::depthcounter);
945:
946: my ($timer,$time);
947: if ($Apache::lonxml::debug eq "1") {
948: $timer=pop(@timers);
949: $time=&tv_interval($lasttime);
950: $lasttime=[&gettimeofday()];
951: }
952: my $spacing=' 'x($#Apache::lonxml::depthcounter);
953: $Apache::lonxml::curdepth = join('_',@Apache::lonxml::depthcounter);
954: # &Apache::lonxml::debug("e$spacing$Apache::lonxml::depth : $Apache::lonxml::olddepth : $Apache::lonxml::curdepth : $token->[1] : $time : ".&tv_interval($timer));
955: #print "<br />e $Apache::lonxml::depth : $Apache::lonxml::olddepth : $token->[1] : $curdepth\n";
956: }
957:
958: sub get_id {
959: my ($parstack,$safeeval)=@_;
960: my $id= &Apache::lonxml::get_param('id',$parstack,$safeeval);
961: if ($env{'request.state'} eq 'construct' && $id =~ /(\.|_)/) {
962: &error(&mt("IDs are not allowed to contain "<tt>_</tt>" or "<tt>.</tt>""));
963: }
964: if ($id =~ /^\s*$/) { $id = $Apache::lonxml::curdepth; }
965: return $id;
966: }
967:
968: sub get_all_text_unbalanced {
969: #there is a copy of this in lonpublisher.pm
970: my($tag,$pars)= @_;
971: my $token;
972: my $result='';
973: $tag='<'.$tag.'>';
974: while ($token = $$pars[-1]->get_token) {
975: if (($token->[0] eq 'T')||($token->[0] eq 'C')||($token->[0] eq 'D')) {
976: if ($token->[0] eq 'T' && $token->[2]) {
977: $result.='<![CDATA['.$token->[1].']]>';
978: } else {
979: $result.=$token->[1];
980: }
981: } elsif ($token->[0] eq 'PI') {
982: $result.=$token->[2];
983: } elsif ($token->[0] eq 'S') {
984: $result.=$token->[4];
985: } elsif ($token->[0] eq 'E') {
986: $result.=$token->[2];
987: }
988: if ($result =~ /\Q$tag\E/is) {
989: ($result,my $redo)=$result =~ /(.*)\Q$tag\E(.*)/is;
990: #&Apache::lonxml::debug('Got a winner with leftovers ::'.$2);
991: #&Apache::lonxml::debug('Result is :'.$1);
992: $redo=$tag.$redo;
993: &Apache::lonxml::newparser($pars,\$redo);
994: last;
995: }
996: }
997: return $result
998: }
999:
1000: sub increment_counter {
1001: my ($increment) = @_;
1002: if (defined($increment) && $increment gt 0) {
1003: $Apache::lonxml::counter+=$increment;
1004: } else {
1005: $Apache::lonxml::counter++;
1006: }
1007: $Apache::lonxml::counter_changed=1;
1008: }
1009:
1010: sub init_counter {
1011: if ($env{'request.state'} eq 'construct') {
1012: $Apache::lonxml::counter=1;
1013: $Apache::lonxml::counter_changed=1;
1014: } elsif (defined($env{'form.counter'})) {
1015: $Apache::lonxml::counter=$env{'form.counter'};
1016: $Apache::lonxml::counter_changed=0;
1017: } else {
1018: $Apache::lonxml::counter=1;
1019: $Apache::lonxml::counter_changed=1;
1020: }
1021: }
1022:
1023: sub store_counter {
1024: &Apache::lonnet::appenv(('form.counter' => $Apache::lonxml::counter));
1025: $Apache::lonxml::counter_changed=0;
1026: return '';
1027: }
1028:
1029: {
1030: my $state;
1031: sub clear_problem_counter {
1032: undef($state);
1033: &Apache::lonnet::delenv('form.counter');
1034: &Apache::lonxml::init_counter();
1035: &Apache::lonxml::store_counter();
1036: }
1037:
1038: sub remember_problem_counter {
1039: &Apache::lonnet::transfer_profile_to_env(undef,undef,1);
1040: $state = $env{'form.counter'};
1041: }
1042:
1043: sub restore_problem_counter {
1044: if (defined($state)) {
1045: &Apache::lonnet::appenv(('form.counter' => $state));
1046: }
1047: }
1048: sub get_problem_counter {
1049: if ($Apache::lonxml::counter_changed) { &store_counter() }
1050: &Apache::lonnet::transfer_profile_to_env(undef,undef,1);
1051: return $env{'form.counter'};
1052: }
1053: }
1054:
1055: sub get_all_text {
1056: my($tag,$pars,$style)= @_;
1057: my $gotfullstack=1;
1058: if (ref($pars) ne 'ARRAY') {
1059: $gotfullstack=0;
1060: $pars=[$pars];
1061: }
1062: if (ref($style) ne 'HASH') {
1063: $style={};
1064: }
1065: my $depth=0;
1066: my $token;
1067: my $result='';
1068: if ( $tag =~ m:^/: ) {
1069: my $tag=substr($tag,1);
1070: #&Apache::lonxml::debug("have:$tag:");
1071: my $top_empty=0;
1072: while (($depth >=0) && ($#$pars > -1) && (!$top_empty)) {
1073: while (($depth >=0) && ($token = $$pars[-1]->get_token)) {
1074: #&Apache::lonxml::debug("e token:$token->[0]:$depth:$token->[1]:".$#$pars.":".$#Apache::lonxml::pwd);
1075: if (($token->[0] eq 'T')||($token->[0] eq 'C')||($token->[0] eq 'D')) {
1076: if ($token->[2]) {
1077: $result.='<![CDATA['.$token->[1].']]>';
1078: } else {
1079: $result.=$token->[1];
1080: }
1081: } elsif ($token->[0] eq 'PI') {
1082: $result.=$token->[2];
1083: } elsif ($token->[0] eq 'S') {
1084: if ($token->[1] =~ /^\Q$tag\E$/i) { $depth++; }
1085: if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_ON$/) { $Apache::lonxml::usestyle=1; }
1086: if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_OFF$/) { $Apache::lonxml::usestyle=0; }
1087: $result.=$token->[4];
1088: } elsif ($token->[0] eq 'E') {
1089: if ( $token->[1] =~ /^\Q$tag\E$/i) { $depth--; }
1090: #skip sending back the last end tag
1091: if ($depth == 0 && exists($$style{'/'.$token->[1]}) && $Apache::lonxml::usestyle) {
1092: my $string=
1093: '<LONCAPA_INTERNAL_TURN_STYLE_OFF end="yes" />'.
1094: $$style{'/'.$token->[1]}.
1095: $token->[2].
1096: '<LONCAPA_INTERNAL_TURN_STYLE_ON />';
1097: &Apache::lonxml::newparser($pars,\$string);
1098: #&Apache::lonxml::debug("reParsing $string");
1099: next;
1100: }
1101: if ($depth > -1) {
1102: $result.=$token->[2];
1103: } else {
1104: $$pars[-1]->unget_token($token);
1105: }
1106: }
1107: }
1108: if (($depth >=0) && ($#$pars == 0) ) { $top_empty=1; }
1109: if (($depth >=0) && ($#$pars > 0) ) {
1110: pop(@$pars);
1111: pop(@Apache::lonxml::pwd);
1112: }
1113: }
1114: if ($top_empty && $depth >= 0) {
1115: #never found the end tag ran out of text, throw error send back blank
1116: &error('Never found end tag for <'.$tag.
1117: '> current string <pre>'.
1118: &HTML::Entities::encode($result,'<>&"').
1119: '</pre>');
1120: if ($gotfullstack) {
1121: my $newstring='</'.$tag.'>'.$result;
1122: &Apache::lonxml::newparser($pars,\$newstring);
1123: }
1124: $result='';
1125: }
1126: } else {
1127: while ($#$pars > -1) {
1128: while ($token = $$pars[-1]->get_token) {
1129: #&Apache::lonxml::debug("s token:$token->[0]:$depth:$token->[1]");
1130: if (($token->[0] eq 'T')||($token->[0] eq 'C')||
1131: ($token->[0] eq 'D')) {
1132: if ($token->[2]) {
1133: $result.='<![CDATA['.$token->[1].']]>';
1134: } else {
1135: $result.=$token->[1];
1136: }
1137: } elsif ($token->[0] eq 'PI') {
1138: $result.=$token->[2];
1139: } elsif ($token->[0] eq 'S') {
1140: if ( $token->[1] =~ /^\Q$tag\E$/i) {
1141: $$pars[-1]->unget_token($token); last;
1142: } else {
1143: $result.=$token->[4];
1144: }
1145: if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_ON$/) { $Apache::lonxml::usestyle=1; }
1146: if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_OFF$/) { $Apache::lonxml::usestyle=0; }
1147: } elsif ($token->[0] eq 'E') {
1148: $result.=$token->[2];
1149: }
1150: }
1151: if (($#$pars > 0) ) {
1152: pop(@$pars);
1153: pop(@Apache::lonxml::pwd);
1154: } else { last; }
1155: }
1156: }
1157: #&Apache::lonxml::debug("Exit:$result:");
1158: return $result
1159: }
1160:
1161: sub newparser {
1162: my ($parser,$contentref,$dir) = @_;
1163: push (@$parser,HTML::LCParser->new($contentref));
1164: $$parser[-1]->xml_mode(1);
1165: $$parser[-1]->marked_sections(1);
1166: if ( $dir eq '' ) {
1167: push (@Apache::lonxml::pwd, $Apache::lonxml::pwd[$#Apache::lonxml::pwd]);
1168: } else {
1169: push (@Apache::lonxml::pwd, $dir);
1170: }
1171: }
1172:
1173: sub parstring {
1174: my ($token) = @_;
1175: my (@vars,@values);
1176: foreach my $attr (@{$token->[3]}) {
1177: if ($attr!~/\W/) {
1178: my $val=$token->[2]->{$attr};
1179: $val =~ s/([\%\@\\\"\'])/\\$1/g;
1180: $val =~ s/(\$[^\{a-zA-Z_])/\\$1/g;
1181: $val =~ s/(\$)$/\\$1/;
1182: #if ($val =~ m/^[\%\@]/) { $val="\\".$val; }
1183: push(@vars,"\$$attr");
1184: push(@values,"\"$val\"");
1185: }
1186: }
1187: my $var_init =
1188: (@vars) ? 'my ('.join(',',@vars).') = ('.join(',',@values).');'
1189: : '';
1190: return $var_init;
1191: }
1192:
1193: sub extlink {
1194: my ($res,$exact)=@_;
1195: if (!$exact) {
1196: $res=&Apache::lonnet::hreflocation($Apache::lonxml::pwd[-1],$res);
1197: }
1198: push(@Apache::lonxml::extlinks,$res)
1199: }
1200:
1201: sub writeallows {
1202: unless ($#extlinks>=0) { return; }
1203: my $thisurl = &Apache::lonnet::clutter(shift);
1204: if ($env{'httpref.'.$thisurl}) {
1205: $thisurl=$env{'httpref.'.$thisurl};
1206: }
1207: my $thisdir=$thisurl;
1208: $thisdir=~s/\/[^\/]+$//;
1209: my %httpref=();
1210: foreach (@extlinks) {
1211: $httpref{'httpref.'.
1212: &Apache::lonnet::hreflocation($thisdir,&unescape($_))}=$thisurl;
1213: }
1214: @extlinks=();
1215: &Apache::lonnet::appenv(%httpref);
1216: }
1217:
1218: sub register_ssi {
1219: my ($url,%form)=@_;
1220: push (@Apache::lonxml::ssi_info,{'url'=>$url,'form'=>\%form});
1221: return '';
1222: }
1223:
1224: sub do_registered_ssi {
1225: foreach my $info (@Apache::lonxml::ssi_info) {
1226: my %form=%{ $info->{'form'}};
1227: my $url=$info->{'url'};
1228: &Apache::lonnet::ssi($url,%form);
1229: }
1230: }
1231: #
1232: # Afterburner handles anchors, highlights and links
1233: #
1234: sub afterburn {
1235: my $result=shift;
1236: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
1237: ['highlight','anchor','link']);
1238: if ($env{'form.highlight'}) {
1239: foreach (split(/\,/,$env{'form.highlight'})) {
1240: my $anchorname=$_;
1241: my $matchthis=$anchorname;
1242: $matchthis=~s/\_+/\\s\+/g;
1243: $result=~s/(\Q$matchthis\E)/\<font color=\"red\"\>$1\<\/font\>/gs;
1244: }
1245: }
1246: if ($env{'form.link'}) {
1247: foreach (split(/\,/,$env{'form.link'})) {
1248: my ($anchorname,$linkurl)=split(/\>/,$_);
1249: my $matchthis=$anchorname;
1250: $matchthis=~s/\_+/\\s\+/g;
1251: $result=~s/(\Q$matchthis\E)/\<a href=\"$linkurl\"\>$1\<\/a\>/gs;
1252: }
1253: }
1254: if ($env{'form.anchor'}) {
1255: my $anchorname=$env{'form.anchor'};
1256: my $matchthis=$anchorname;
1257: $matchthis=~s/\_+/\\s\+/g;
1258: $result=~s/(\Q$matchthis\E)/\<a name=\"$anchorname\"\>$1\<\/a\>/s;
1259: $result.=(<<"ENDSCRIPT");
1260: <script type="text/javascript">
1261: document.location.hash='$anchorname';
1262: </script>
1263: ENDSCRIPT
1264: }
1265: return $result;
1266: }
1267:
1268: sub storefile {
1269: my ($file,$contents)=@_;
1270: &Apache::lonnet::correct_line_ends(\$contents);
1271: if (my $fh=Apache::File->new('>'.$file)) {
1272: print $fh $contents;
1273: $fh->close();
1274: return 1;
1275: } else {
1276: &warning("Unable to save file $file");
1277: return 0;
1278: }
1279: }
1280:
1281: sub createnewhtml {
1282: my $title=&mt('Title of document goes here');
1283: my $body=&mt('Body of document goes here');
1284: my $filecontents=(<<SIMPLECONTENT);
1285: <html>
1286: <head>
1287: <title>$title</title>
1288: </head>
1289: <body bgcolor="#FFFFFF">
1290: $body
1291: </body>
1292: </html>
1293: SIMPLECONTENT
1294: return $filecontents;
1295: }
1296:
1297: sub createnewsty {
1298: my $filecontents=(<<SIMPLECONTENT);
1299: <definetag name="">
1300: <render>
1301: <web></web>
1302: <tex></tex>
1303: </render>
1304: </definetag>
1305: SIMPLECONTENT
1306: return $filecontents;
1307: }
1308:
1309:
1310: sub inserteditinfo {
1311: my ($result,$filecontents,$filetype)=@_;
1312: $filecontents = &HTML::Entities::encode($filecontents,'<>&"');
1313: # my $editheader='<a href="#editsection">Edit below</a><hr />';
1314: my $xml_help = '';
1315: my $initialize='';
1316: if ($filetype eq 'html') {
1317: my $addbuttons=&Apache::lonhtmlcommon::htmlareaaddbuttons();
1318: $initialize=&Apache::lonhtmlcommon::spellheader();
1319: if (!&Apache::lonhtmlcommon::htmlareablocked() &&
1320: &Apache::lonhtmlcommon::htmlareabrowser()) {
1321: $initialize.=(<<FULLPAGE);
1322: <script type="text/javascript">
1323: $addbuttons
1324:
1325: HTMLArea.loadPlugin("FullPage");
1326:
1327: function initDocument() {
1328: var editor=new HTMLArea("filecont",config);
1329: editor.registerPlugin(FullPage);
1330: editor.generate();
1331: }
1332: </script>
1333: FULLPAGE
1334: } else {
1335: $initialize.=(<<FULLPAGE);
1336: <script type="text/javascript">
1337: $addbuttons
1338: function initDocument() {
1339: }
1340: </script>
1341: FULLPAGE
1342: }
1343: $result=~s/\<body([^\>]*)\>/\<body onload="initDocument()" $1\>/i;
1344: $xml_help=&Apache::loncommon::helpLatexCheatsheet();
1345: }
1346: my $cleanbut = '';
1347:
1348: my $titledisplay=&display_title();
1349: my %lt=&Apache::lonlocal::texthash('st' => 'Save and Edit',
1350: 'vi' => 'Save and View',
1351: 'dv' => 'Discard Edits and View',
1352: 'un' => 'undo',
1353: 'ed' => 'Edit');
1354: my $buttons=(<<BUTTONS);
1355: $cleanbut
1356: <input type="submit" name="discardview" accesskey="d" value="$lt{'dv'}" />
1357: <input type="submit" name="Undo" accesskey="u" value="$lt{'un'}" /><hr>
1358: <input type="submit" name="savethisfile" accesskey="s" value="$lt{'st'}" />
1359: <input type="submit" name="viewmode" accesskey="v" value="$lt{'vi'}" />
1360: BUTTONS
1361: $buttons.=&Apache::lonhtmlcommon::spelllink('xmledit','filecont');
1362: my $editfooter=(<<ENDFOOTER);
1363: $initialize
1364: <hr />
1365: <a name="editsection" />
1366: <form method="post" name="xmledit">
1367: $xml_help
1368: <input type="hidden" name="editmode" value="$lt{'ed'}" />
1369: $buttons<br />
1370: <textarea style="width:100%" cols="80" rows="44" name="filecont" id="filecont">$filecontents</textarea>
1371: <br />$buttons
1372: <br />
1373: </form>
1374: $titledisplay
1375: </body>
1376: ENDFOOTER
1377: # $result=~s/(\<body[^\>]*\>)/$1$editheader/is;
1378: $result=~s/(\<\/body\>)/$editfooter/is;
1379: return $result;
1380: }
1381:
1382: sub get_target {
1383: my $viewgrades=&Apache::lonnet::allowed('vgr',$env{'request.course.id'});
1384: if ( $env{'request.state'} eq 'published') {
1385: if ( defined($env{'form.grade_target'})
1386: && ($viewgrades == 'F' )) {
1387: return ($env{'form.grade_target'});
1388: } elsif (defined($env{'form.grade_target'})) {
1389: if (($env{'form.grade_target'} eq 'web') ||
1390: ($env{'form.grade_target'} eq 'tex') ) {
1391: return $env{'form.grade_target'}
1392: } else {
1393: return 'web';
1394: }
1395: } else {
1396: return 'web';
1397: }
1398: } elsif ($env{'request.state'} eq 'construct') {
1399: if ( defined($env{'form.grade_target'})) {
1400: return ($env{'form.grade_target'});
1401: } else {
1402: return 'web';
1403: }
1404: } else {
1405: return 'web';
1406: }
1407: }
1408:
1409: sub handler {
1410: my $request=shift;
1411:
1412: my $target=&get_target();
1413:
1414: $Apache::lonxml::debug=$env{'user.debug'};
1415:
1416: &Apache::loncommon::content_type($request,'text/html');
1417: &Apache::loncommon::no_cache($request);
1418: if ($env{'request.state'} eq 'published') {
1419: $request->set_last_modified(&Apache::lonnet::metadata($request->uri,
1420: 'lastrevisiondate'));
1421: }
1422: $request->send_http_header;
1423:
1424: return OK if $request->header_only;
1425:
1426:
1427: my $file=&Apache::lonnet::filelocation("",$request->uri);
1428: my $filetype;
1429: if ($file =~ /\.sty$/) {
1430: $filetype='sty';
1431: } else {
1432: $filetype='html';
1433: }
1434: #
1435: # Edit action? Save file.
1436: #
1437: if (!($env{'request.state'} eq 'published')) {
1438: if ($env{'form.savethisfile'} || $env{'form.viewmode'} || $env{'form.Undo'}) {
1439: my $html_file=&Apache::lonnet::getfile($file);
1440: my $error = &Apache::lonhomework::handle_save_or_undo($request, \$html_file, \$env{'form.filecont'});
1441: }
1442: }
1443: my %mystyle;
1444: my $result = '';
1445: my $filecontents=&Apache::lonnet::getfile($file);
1446: if ($filecontents eq -1) {
1447: my $start_page=&Apache::loncommon::start_page('File Error');
1448: my $end_page=&Apache::loncommon::end_page();
1449: my $fnf=&mt('File not found');
1450: $result=(<<ENDNOTFOUND);
1451: $start_page
1452: <b>$fnf: $file</b>
1453: $end_page
1454: ENDNOTFOUND
1455: $filecontents='';
1456: if ($env{'request.state'} ne 'published') {
1457: if ($filetype eq 'sty') {
1458: $filecontents=&createnewsty();
1459: } else {
1460: $filecontents=&createnewhtml();
1461: }
1462: $env{'form.editmode'}='Edit'; #force edit mode
1463: }
1464: } else {
1465: unless ($env{'request.state'} eq 'published') {
1466: if ($filecontents=~/BEGIN LON-CAPA Internal/) {
1467: &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.'));
1468: }
1469: #
1470: # we are in construction space, see if edit mode forced
1471: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
1472: ['editmode']);
1473: }
1474: if (!$env{'form.editmode'} || $env{'form.viewmode'} || $env{'form.discardview'}) {
1475: $result = &Apache::lonxml::xmlparse($request,$target,$filecontents,
1476: '',%mystyle);
1477: undef($Apache::lonhomework::parsing_a_task);
1478: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
1479: ['rawmode']);
1480: if ($env{'form.rawmode'}) { $result = $filecontents; }
1481: }
1482: }
1483:
1484: #
1485: # Edit action? Insert editing commands
1486: #
1487: unless ($env{'request.state'} eq 'published') {
1488: if ($env{'form.editmode'} && (!($env{'form.viewmode'})) && (!($env{'form.discardview'})))
1489: {
1490: my $displayfile=$request->uri;
1491: $displayfile=~s/^\/[^\/]*//;
1492: my %options = ();
1493: if ($env{'environment.remote'} ne 'off') {
1494: $options{'bgcolor'} = '#FFFFFF';
1495: }
1496: my $start_page = &Apache::loncommon::start_page(undef,undef,
1497: \%options);
1498: $result=$start_page.
1499: &Apache::lonxml::message_location().'<h3>'.
1500: $displayfile.
1501: '</h3>'.&Apache::loncommon::end_page();
1502: $result=&inserteditinfo($result,$filecontents,$filetype);
1503: }
1504: }
1505: if ($filetype eq 'html') { &writeallows($request->uri); }
1506:
1507:
1508: &Apache::lonxml::add_messages(\$result);
1509: $request->print($result);
1510:
1511: return OK;
1512: }
1513:
1514: sub display_title {
1515: my $result;
1516: if ($env{'request.state'} eq 'construct') {
1517: my $title=&Apache::lonnet::gettitle();
1518: if (!defined($title) || $title eq '') {
1519: $title = $env{'request.filename'};
1520: $title = substr($title, rindex($title, '/') + 1);
1521: }
1522: $result = "<script type='text/javascript'>top.document.title = '$title - LON-CAPA Construction Space';</script>";
1523: }
1524: return $result;
1525: }
1526:
1527: sub debug {
1528: if ($Apache::lonxml::debug eq "1") {
1529: $|=1;
1530: my $request=$Apache::lonxml::request;
1531: if (!$request) {
1532: eval { $request=Apache->request; };
1533: }
1534: if (!$request) {
1535: eval { $request=Apache2::RequestUtil->request; };
1536: }
1537: $request->print('<font size="-2"><pre>DEBUG:'.&HTML::Entities::encode($_[0],'<>&"')."</pre></font>\n");
1538: #&Apache::lonnet::logthis($_[0]);
1539: }
1540: }
1541:
1542: sub show_error_warn_msg {
1543: if ($env{'request.filename'} eq '/home/httpd/html/res/lib/templates/simpleproblem.problem' &&
1544: &Apache::lonnet::allowed('mdc',$env{'request.course.id'})) {
1545: return 1;
1546: }
1547: return (($Apache::lonxml::debug eq 1) ||
1548: ($env{'request.state'} eq 'construct') ||
1549: ($Apache::lonhomework::browse eq 'F'
1550: &&
1551: $env{'form.show_errors'} eq 'on'));
1552: }
1553:
1554: sub error {
1555: $errorcount++;
1556: if ( &show_error_warn_msg() ) {
1557: # If printing in construction space, put the error inside <pre></pre>
1558: push(@Apache::lonxml::error_messages,
1559: $Apache::lonxml::warnings_error_header.
1560: "<b>ERROR:</b>".join("<br />\n",@_)."<br />\n");
1561: $Apache::lonxml::warnings_error_header='';
1562: } else {
1563: my $errormsg;
1564: my ($symb)=&Apache::lonnet::symbread();
1565: if ( !$symb ) {
1566: #public or browsers
1567: $errormsg=&mt("An error occured while processing this resource. The author has been notified.");
1568: }
1569: my $host=$Apache::lonnet::perlvar{'lonHostID'};
1570: my $msg = join('<br />',(@_,"The error occurred on host <tt>$host</tt>"));
1571: #notify author
1572: &Apache::lonmsg::author_res_msg($env{'request.filename'},$msg);
1573: #notify course
1574: if ( $symb && $env{'request.course.id'} ) {
1575: my $cnum=$env{'course.'.$env{'request.course.id'}.'.num'};
1576: my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
1577: my (undef,%users)=&Apache::lonmsg::decide_receiver(undef,0,1,1,1);
1578: my $declutter=&Apache::lonnet::declutter($env{'request.filename'});
1579: my $baseurl = &Apache::lonnet::clutter($declutter);
1580: my @userlist;
1581: foreach (keys %users) {
1582: my ($user,$domain) = split(/:/, $_);
1583: push(@userlist,"$user\@$domain");
1584: my $key=$declutter.'_'.$user.'_'.$domain;
1585: my %lastnotified=&Apache::lonnet::get('nohist_xmlerrornotifications',
1586: [$key],
1587: $cdom,$cnum);
1588: my $now=time;
1589: if ($now-$lastnotified{$key}>86400) {
1590: my $title = &Apache::lonnet::gettitle($symb);
1591: my $sentmessage;
1592: &Apache::lonmsg::user_normal_msg($user,$domain,
1593: "Error [$title]",$msg,'',$baseurl,'','',
1594: \$sentmessage,$symb,$title,1);
1595: &Apache::lonnet::put('nohist_xmlerrornotifications',
1596: {$key => $now},
1597: $cdom,$cnum);
1598: }
1599: }
1600: if ($env{'request.role.adv'}) {
1601: $errormsg=&mt("An error occured while processing this resource. The course personnel ([_1]) and the author have been notified.",join(', ',@userlist));
1602: } else {
1603: $errormsg=&mt("An error occured while processing this resource. The instructor has been notified.");
1604: }
1605: }
1606: push(@Apache::lonxml::error_messages,"<b>$errormsg</b> <br />");
1607: }
1608: }
1609:
1610: sub warning {
1611: $warningcount++;
1612:
1613: if ($env{'form.grade_target'} ne 'tex') {
1614: if ( &show_error_warn_msg() ) {
1615: push(@Apache::lonxml::warning_messages,
1616: $Apache::lonxml::warnings_error_header.
1617: "<b>W</b>ARNING<b>:</b>".join('<br />',@_)."<br />\n");
1618: $Apache::lonxml::warnings_error_header='';
1619: }
1620: }
1621: }
1622:
1623: sub info {
1624: if ($env{'form.grade_target'} ne 'tex'
1625: && $env{'request.state'} eq 'construct') {
1626: push(@Apache::lonxml::info_messages,join('<br />',@_)."<br />\n");
1627: }
1628: }
1629:
1630: sub message_location {
1631: return '__LONCAPA_INTERNAL_MESSAGE_LOCATION__';
1632: }
1633:
1634: sub add_messages {
1635: my ($msg)=@_;
1636: my $result=join(' ',
1637: @Apache::lonxml::info_messages,
1638: @Apache::lonxml::error_messages,
1639: @Apache::lonxml::warning_messages);
1640: undef(@Apache::lonxml::info_messages);
1641: undef(@Apache::lonxml::error_messages);
1642: undef(@Apache::lonxml::warning_messages);
1643: $$msg=~s/__LONCAPA_INTERNAL_MESSAGE_LOCATION__/$result/;
1644: $$msg=~s/__LONCAPA_INTERNAL_MESSAGE_LOCATION__//g;
1645: }
1646:
1647: sub get_param {
1648: my ($param,$parstack,$safeeval,$context,$case_insensitive) = @_;
1649: if ( ! $context ) { $context = -1; }
1650: my $args ='';
1651: if ( $#$parstack > (-2-$context) ) { $args=$$parstack[$context]; }
1652: if ( ! $Apache::lonxml::usestyle ) {
1653: $args=$Apache::lonxml::style_values.$args;
1654: }
1655: if ( ! $args ) { return undef; }
1656: if ( $case_insensitive ) {
1657: if ($args =~ s/(my (?:.*))(\$\Q$param\E[,\)])/$1.lc($2)/ei) {
1658: return &Apache::run::run("{$args;".'return $'.$param.'}',
1659: $safeeval); #'
1660: } else {
1661: return undef;
1662: }
1663: } else {
1664: if ( $args =~ /my .*\$\Q$param\E[,\)]/ ) {
1665: return &Apache::run::run("{$args;".'return $'.$param.'}',
1666: $safeeval); #'
1667: } else {
1668: return undef;
1669: }
1670: }
1671: }
1672:
1673: sub get_param_var {
1674: my ($param,$parstack,$safeeval,$context,$case_insensitive) = @_;
1675: if ( ! $context ) { $context = -1; }
1676: my $args ='';
1677: if ( $#$parstack > (-2-$context) ) { $args=$$parstack[$context]; }
1678: if ( ! $Apache::lonxml::usestyle ) {
1679: $args=$Apache::lonxml::style_values.$args;
1680: }
1681: &Apache::lonxml::debug("Args are $args param is $param");
1682: if ($case_insensitive) {
1683: if (! ($args=~s/(my (?:.*))(\$\Q$param\E[,\)])/$1.lc($2)/ei)) {
1684: return undef;
1685: }
1686: } elsif ( $args !~ /my .*\$\Q$param\E[,\)]/ ) { return undef; }
1687: my $value=&Apache::run::run("{$args;".'return $'.$param.'}',$safeeval); #'
1688: &Apache::lonxml::debug("first run is $value");
1689: if ($value =~ /^[\$\@\%][a-zA-Z_]\w*$/) {
1690: &Apache::lonxml::debug("doing second");
1691: my @result=&Apache::run::run("return $value",$safeeval,1);
1692: if (!defined($result[0])) {
1693: return $value
1694: } else {
1695: if (wantarray) { return @result; } else { return $result[0]; }
1696: }
1697: } else {
1698: return $value;
1699: }
1700: }
1701:
1702: sub register_insert_xml {
1703: my $parser = HTML::LCParser->new($Apache::lonnet::perlvar{'lonTabDir'}
1704: .'/insertlist.xml');
1705: my ($tagnum,$in_help)=(0,0);
1706: my @alltags;
1707: my $tag;
1708: while (my $token = $parser->get_token()) {
1709: if ($token->[0] eq 'S') {
1710: my $key;
1711: if ($token->[1] eq 'tag') {
1712: $tag = $token->[2]{'name'};
1713: $insertlist{"$tagnum.tag"} = $tag;
1714: $insertlist{"$tag.num"} = $tagnum;
1715: push(@alltags,$tag);
1716: } elsif ($in_help && $token->[1] eq 'file') {
1717: $key = $tag.'.helpfile';
1718: } elsif ($in_help && $token->[1] eq 'description') {
1719: $key = $tag.'.helpdesc';
1720: } elsif ($token->[1] eq 'description' ||
1721: $token->[1] eq 'color' ||
1722: $token->[1] eq 'show' ) {
1723: $key = $tag.'.'.$token->[1];
1724: } elsif ($token->[1] eq 'insert_sub') {
1725: $key = $tag.'.function';
1726: } elsif ($token->[1] eq 'help') {
1727: $in_help=1;
1728: } elsif ($token->[1] eq 'allow') {
1729: $key = $tag.'.allow';
1730: }
1731: if (defined($key)) {
1732: $insertlist{$key} = $parser->get_text();
1733: $insertlist{$key} =~ s/(^\s*|\s*$ )//gx;
1734: }
1735: } elsif ($token->[0] eq 'E') {
1736: if ($token->[1] eq 'tag') {
1737: undef($tag);
1738: $tagnum++;
1739: } elsif ($token->[1] eq 'help') {
1740: undef($in_help);
1741: }
1742: }
1743: }
1744:
1745: # parse the allows and ignore tags set to <show>no</show>
1746: foreach my $tag (@alltags) {
1747: next if (!exists($insertlist{"$tag.allow"}));
1748: my $allow = $insertlist{"$tag.allow"};
1749: foreach my $element (split(',',$allow)) {
1750: $element =~ s/(^\s*|\s*$ )//gx;
1751: if (!exists($insertlist{"$element.show"})
1752: || $insertlist{"$element.show"} ne 'no') {
1753: push(@{ $insertlist{$tag.'.which'} },$element);
1754: }
1755: }
1756: }
1757: }
1758:
1759: sub register_insert {
1760: return ®ister_insert_xml(@_);
1761: # &dump_insertlist('2');
1762: }
1763:
1764: sub dump_insertlist {
1765: my ($ext) = @_;
1766: open(XML,">/tmp/insertlist.xml.$ext");
1767: print XML ("<insertlist>");
1768: my $i=0;
1769:
1770: while (exists($insertlist{"$i.tag"})) {
1771: my $tag = $insertlist{"$i.tag"};
1772: print XML ("
1773: \t<tag name=\"$tag\">");
1774: if (defined($insertlist{"$tag.description"})) {
1775: print XML ("
1776: \t\t<description>".$insertlist{"$tag.description"}."</description>");
1777: }
1778: if (defined($insertlist{"$tag.color"})) {
1779: print XML ("
1780: \t\t<color>".$insertlist{"$tag.color"}."</color>");
1781: }
1782: if (defined($insertlist{"$tag.function"})) {
1783: print XML ("
1784: \t\t<insert_sub>".$insertlist{"$tag.function"}."</insert_sub>");
1785: }
1786: if (defined($insertlist{"$tag.show"})
1787: && $insertlist{"$tag.show"} ne 'yes') {
1788: print XML ("
1789: \t\t<show>".$insertlist{"$tag.show"}."</show>");
1790: }
1791: if (defined($insertlist{"$tag.helpfile"})) {
1792: print XML ("
1793: \t\t<help>
1794: \t\t\t<file>".$insertlist{"$tag.helpfile"}."</file>");
1795: if ($insertlist{"$tag.helpdesc"} ne '') {
1796: print XML ("
1797: \t\t\t<description>".$insertlist{"$tag.helpdesc"}."</description>");
1798: }
1799: print XML ("
1800: \t\t</help>");
1801: }
1802: if (defined($insertlist{"$tag.which"})) {
1803: print XML ("
1804: \t\t<allow>".join(',',sort(@{ $insertlist{"$tag.which"} }))."</allow>");
1805: }
1806: print XML ("
1807: \t</tag>");
1808: $i++;
1809: }
1810: print XML ("\n</insertlist>\n");
1811: close(XML);
1812: }
1813:
1814: sub description {
1815: my ($token)=@_;
1816: my $tag = &get_tag($token);
1817: return $insertlist{$tag.'.description'};
1818: }
1819:
1820: # Returns a list containing the help file, and the description
1821: sub helpinfo {
1822: my ($token)=@_;
1823: my $tag = &get_tag($token);
1824: return ($insertlist{$tag.'.helpfile'}, $insertlist{$tag.'.helpdesc'});
1825: }
1826:
1827: sub get_tag {
1828: my ($token)=@_;
1829: my $tagnum;
1830: my $tag=$token->[1];
1831: foreach my $namespace (reverse(@Apache::lonxml::namespace)) {
1832: my $testtag = $namespace.'::'.$tag;
1833: $tagnum = $insertlist{"$testtag.num"};
1834: last if (defined($tagnum));
1835: }
1836: if (!defined($tagnum)) {
1837: $tagnum = $Apache::lonxml::insertlist{"$tag.num"};
1838: }
1839: return $insertlist{"$tagnum.tag"};
1840: }
1841:
1842: 1;
1843: __END__
1844:
1845:
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