1: # The LearningOnline Network with CAPA
2: # XML Parser Module
3: #
4: # $Id: lonxml.pm,v 1.435 2006/12/28 17:20:36 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:
41: package Apache::lonxml;
42: use vars
43: qw(@pwd @outputstack $redirection $import @extlinks $metamode $evaluate %insertlist @namespace $errorcount $warningcount);
44: use strict;
45: use HTML::LCParser();
46: use HTML::TreeBuilder();
47: use HTML::Entities();
48: use Safe();
49: use Safe::Hole();
50: use Math::Cephes();
51: use Math::Random();
52: use Opcode();
53: use POSIX qw(strftime);
54: use Time::HiRes qw( gettimeofday tv_interval );
55: use Symbol();
56:
57: sub register {
58: my ($space,@taglist) = @_;
59: foreach my $temptag (@taglist) {
60: push(@{ $Apache::lonxml::alltags{$temptag} },$space);
61: }
62: }
63:
64: sub deregister {
65: my ($space,@taglist) = @_;
66: foreach my $temptag (@taglist) {
67: my $tempspace = $Apache::lonxml::alltags{$temptag}[-1];
68: if ($tempspace eq $space) {
69: pop(@{ $Apache::lonxml::alltags{$temptag} });
70: }
71: }
72: #&printalltags();
73: }
74:
75: use Apache::Constants qw(:common);
76: use Apache::lontexconvert();
77: use Apache::style();
78: use Apache::run();
79: use Apache::londefdef();
80: use Apache::scripttag();
81: use Apache::languagetags();
82: use Apache::edit();
83: use Apache::inputtags();
84: use Apache::outputtags();
85: use Apache::lonnet;
86: use Apache::File();
87: use Apache::loncommon();
88: use Apache::lonfeedback();
89: use Apache::lonmsg();
90: use Apache::loncacc();
91: use Apache::lonmaxima();
92: use Apache::lonlocal;
93:
94: #================================================== Main subroutine: xmlparse
95: #debugging control, to turn on debugging modify the correct handler
96: $Apache::lonxml::debug=0;
97:
98: # keeps count of the number of warnings and errors generated in a parse
99: $warningcount=0;
100: $errorcount=0;
101:
102: #path to the directory containing the file currently being processed
103: @pwd=();
104:
105: #these two are used for capturing a subset of the output for later processing,
106: #don't touch them directly use &startredirection and &endredirection
107: @outputstack = ();
108: $redirection = 0;
109:
110: #controls wheter the <import> tag actually does
111: $import = 1;
112: @extlinks=();
113:
114: # meta mode is a bit weird only some output is to be turned off
115: #<output> tag turns metamode off (defined in londefdef.pm)
116: $metamode = 0;
117:
118: # turns on and of run::evaluate actually derefencing var refs
119: $evaluate = 1;
120:
121: # data structure for eidt mode, determines what tags can go into what other tags
122: %insertlist=();
123:
124: # stores the list of active tag namespaces
125: @namespace=();
126:
127: # a pointer the the Apache request object
128: $Apache::lonxml::request='';
129:
130: # a problem number counter, and check on ether it is used
131: $Apache::lonxml::counter=1;
132: $Apache::lonxml::counter_changed=0;
133:
134: #internal check on whether to look at style defs
135: $Apache::lonxml::usestyle=1;
136:
137: #locations used to store the parameter string for style substitutions
138: $Apache::lonxml::style_values='';
139: $Apache::lonxml::style_end_values='';
140:
141: #array of ssi calls that need to occur after we are done parsing
142: @Apache::lonxml::ssi_info=();
143:
144: #should we do the postag variable interpolation
145: $Apache::lonxml::post_evaluate=1;
146:
147: #a header message to emit in the case of any generated warning or errors
148: $Apache::lonxml::warnings_error_header='';
149:
150: # Control whether or not LaTeX symbols should be substituted for their
151: # \ style equivalents...this may be turned off e.g. in an verbatim
152: # environment.
153:
154: $Apache::lonxml::substitute_LaTeX_symbols = 1; # Starts out on.
155:
156: sub enable_LaTeX_substitutions {
157: $Apache::lonxml::substitute_LaTeX_symbols = 1;
158: }
159: sub disable_LaTeX_substitutions {
160: $Apache::lonxml::substitute_LaTeX_symbols = 0;
161: }
162:
163: sub xmlend {
164: my ($target,$parser)=@_;
165: my $mode='xml';
166: my $status='OPEN';
167: if ($Apache::lonhomework::parsing_a_problem ||
168: $Apache::lonhomework::parsing_a_task ) {
169: $mode='problem';
170: $status=$Apache::inputtags::status[-1];
171: }
172: my $discussion;
173: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
174: ['LONCAPA_INTERNAL_no_discussion']);
175: if (! exists($env{'form.LONCAPA_INTERNAL_no_discussion'}) ||
176: $env{'form.LONCAPA_INTERNAL_no_discussion'} ne 'true') {
177: $discussion=&Apache::lonfeedback::list_discussion($mode,$status);
178: }
179: if ($target eq 'tex') {
180: $discussion.='<tex>\keephidden{ENDOFPROBLEM}\vskip 0.5mm\noindent\makebox[\textwidth/$number_of_columns][b]{\hrulefill}\end{document}</tex>';
181: &Apache::lonxml::newparser($parser,\$discussion,'');
182: return '';
183: }
184:
185: return $discussion;
186: }
187:
188: sub tokeninputfield {
189: my $defhost=$Apache::lonnet::perlvar{'lonHostID'};
190: $defhost=~tr/a-z/A-Z/;
191: return (<<ENDINPUTFIELD)
192: <script type="text/javascript">
193: function updatetoken() {
194: var comp=new Array;
195: var barcode=unescape(document.tokeninput.barcode.value);
196: comp=barcode.split('*');
197: if (typeof(comp[0])!="undefined") {
198: document.tokeninput.codeone.value=comp[0];
199: }
200: if (typeof(comp[1])!="undefined") {
201: document.tokeninput.codetwo.value=comp[1];
202: }
203: if (typeof(comp[2])!="undefined") {
204: comp[2]=comp[2].toUpperCase();
205: document.tokeninput.codethree.value=comp[2];
206: }
207: document.tokeninput.barcode.value='';
208: }
209: </script>
210: <form method="post" name="tokeninput">
211: <table border="2" bgcolor="#FFFFBB">
212: <tr><th>DocID Checkin</th></tr>
213: <tr><td>
214: <table>
215: <tr>
216: <td>Scan in Barcode</td>
217: <td><input type="text" size="22" name="barcode"
218: onChange="updatetoken()"/></td>
219: </tr>
220: <tr><td><i>or</i> Type in DocID</td>
221: <td>
222: <input type="text" size="5" name="codeone" />
223: <b><font size="+2">*</font></b>
224: <input type="text" size="5" name="codetwo" />
225: <b><font size="+2">*</font></b>
226: <input type="text" size="10" name="codethree" value="$defhost"
227: onChange="this.value=this.value.toUpperCase()" />
228: </td></tr>
229: </table>
230: </td></tr>
231: <tr><td><input type="submit" value="Check in DocID" /></td></tr>
232: </table>
233: </form>
234: ENDINPUTFIELD
235: }
236:
237: sub maketoken {
238: my ($symb,$tuname,$tudom,$tcrsid)=@_;
239: unless ($symb) {
240: $symb=&Apache::lonnet::symbread();
241: }
242: unless ($tuname) {
243: $tuname=$env{'user.name'};
244: $tudom=$env{'user.domain'};
245: $tcrsid=$env{'request.course.id'};
246: }
247:
248: return &Apache::lonnet::checkout($symb,$tuname,$tudom,$tcrsid);
249: }
250:
251: sub printtokenheader {
252: my ($target,$token,$tsymb,$tcrsid,$tudom,$tuname)=@_;
253: unless ($token) { return ''; }
254:
255: my ($symb,$courseid,$domain,$name) = &Apache::lonnet::whichuser();
256: unless ($tsymb) {
257: $tsymb=$symb;
258: }
259: unless ($tuname) {
260: $tuname=$name;
261: $tudom=$domain;
262: $tcrsid=$courseid;
263: }
264:
265: my $plainname=&Apache::loncommon::plainname($tuname,$tudom);
266:
267: if ($target eq 'web') {
268: my %idhash=&Apache::lonnet::idrget($tudom,($tuname));
269: return
270: '<img align="right" src="/cgi-bin/barcode.png?encode='.$token.'" />'.
271: &mt('Checked out for').' '.$plainname.
272: '<br />'.&mt('User').': '.$tuname.' at '.$tudom.
273: '<br />'.&mt('ID').': '.$idhash{$tuname}.
274: '<br />'.&mt('CourseID').': '.$tcrsid.
275: '<br />'.&mt('Course').': '.$env{'course.'.$tcrsid.'.description'}.
276: '<br />'.&mt('DocID').': '.$token.
277: '<br />'.&mt('Time').': '.&Apache::lonlocal::locallocaltime().'<hr />';
278: } else {
279: return $token;
280: }
281: }
282:
283: sub printalltags {
284: my $temp;
285: foreach $temp (sort keys %Apache::lonxml::alltags) {
286: &Apache::lonxml::debug("$temp -- ".
287: join(',',@{ $Apache::lonxml::alltags{$temp} }));
288: }
289: }
290:
291: sub xmlparse {
292: my ($request,$target,$content_file_string,$safeinit,%style_for_target) = @_;
293:
294: &setup_globals($request,$target);
295: &Apache::inputtags::initialize_inputtags();
296: &Apache::bridgetask::initialize_bridgetask();
297: &Apache::outputtags::initialize_outputtags();
298: &Apache::edit::initialize_edit();
299: &Apache::londefdef::initialize_londefdef();
300:
301: #
302: # do we have a course style file?
303: #
304:
305: if ($env{'request.course.id'} && $env{'request.state'} ne 'construct') {
306: my $bodytext=
307: $env{'course.'.$env{'request.course.id'}.'.default_xml_style'};
308: if ($bodytext) {
309: foreach my $file (split(',',$bodytext)) {
310: my $location=&Apache::lonnet::filelocation('',$file);
311: my $styletext=&Apache::lonnet::getfile($location);
312: if ($styletext ne '-1') {
313: %style_for_target = (%style_for_target,
314: &Apache::style::styleparser($target,$styletext));
315: }
316: }
317: }
318: } elsif ($env{'construct.style'} && ($env{'request.state'} eq 'construct')) {
319: my $location=&Apache::lonnet::filelocation('',$env{'construct.style'});
320: my $styletext=&Apache::lonnet::getfile($location);
321: if ($styletext ne '-1') {
322: %style_for_target = (%style_for_target,
323: &Apache::style::styleparser($target,$styletext));
324: }
325: }
326: #&printalltags();
327: my @pars = ();
328: my $pwd=$env{'request.filename'};
329: $pwd =~ s:/[^/]*$::;
330: &newparser(\@pars,\$content_file_string,$pwd);
331:
332: my $safeeval = new Safe;
333: my $safehole = new Safe::Hole;
334: &init_safespace($target,$safeeval,$safehole,$safeinit);
335: #-------------------- Redefinition of the target in the case of compound target
336:
337: ($target, my @tenta) = split('&&',$target);
338:
339: my @stack = ();
340: my @parstack = ();
341: &initdepth();
342: &init_alarm();
343: my $finaloutput = &inner_xmlparse($target,\@stack,\@parstack,\@pars,
344: $safeeval,\%style_for_target,1);
345:
346: if (@stack) {
347: &warning("At end of file some tags were still left unclosed, ".
348: '<tt><'.join('></tt>, <tt><',reverse(@stack)).
349: '></tt>');
350: }
351: if ($env{'request.uri'}) {
352: &writeallows($env{'request.uri'});
353: }
354: &do_registered_ssi();
355: if ($Apache::lonxml::counter_changed) { &store_counter() }
356:
357: &clean_safespace($safeeval);
358:
359: if ($env{'form.return_only_error_and_warning_counts'}) {
360: return "$errorcount:$warningcount";
361: }
362: return $finaloutput;
363: }
364:
365: sub latex_special_symbols {
366: my ($string,$where)=@_;
367: #
368: # If e.g. in verbatim mode, then don't substitute.
369: # but return original string.
370: #
371: if (!($Apache::lonxml::substitute_LaTeX_symbols)) {
372: return $string;
373: }
374: if ($where eq 'header') {
375: $string =~ s/\\/\$\\backslash\$/g; # \ -> $\backslash$ per LaTex line by line pg 10.
376: $string =~ s/(\$|%|\{|\})/\\$1/g;
377: $string=&Apache::lonprintout::character_chart($string);
378: # any & or # leftover should be safe to just escape
379: $string=~s/([^\\])\&/$1\\\&/g;
380: $string=~s/([^\\])\#/$1\\\#/g;
381: $string =~ s/_/\\_/g; # _ -> \_
382: $string =~ s/\^/\\\^{}/g; # ^ -> \^{}
383: } else {
384: $string=~s/\\/\\ensuremath{\\backslash}/g;
385: $string=~s/\\\%|\%/\\\%/g;
386: $string=~s/\\{|{/\\{/g;
387: $string=~s/\\}|}/\\}/g;
388: $string=~s/\\ensuremath\\{\\backslash\\}/\\ensuremath{\\backslash}/g;
389: $string=~s/\\\$|\$/\\\$/g;
390: $string=~s/\\\_|\_/\\\_/g;
391: $string=~s/([^\\]|^)(\~|\^)/$1\\$2\\strut /g;
392: $string=~s/(>|<)/\\ensuremath\{$1\}/g; #more or less
393: $string=&Apache::lonprintout::character_chart($string);
394: # any & or # leftover should be safe to just escape
395: $string=~s/\\\&|\&/\\\&/g;
396: $string=~s/\\\#|\#/\\\#/g;
397: $string=~s/\|/\$\\mid\$/g;
398: #single { or } How to escape?
399: }
400: return $string;
401: }
402:
403: sub inner_xmlparse {
404: my ($target,$stack,$parstack,$pars,$safeeval,$style_for_target,$start)=@_;
405: my $finaloutput = '';
406: my $result;
407: my $token;
408: my $dontpop=0;
409: my $startredirection = $Apache::lonxml::redirection;
410: while ( $#$pars > -1 ) {
411: while ($token = $$pars['-1']->get_token) {
412: if (($token->[0] eq 'T') || ($token->[0] eq 'C') ) {
413: if ($metamode<1) {
414: my $text=$token->[1];
415: if ($token->[0] eq 'C' && $target eq 'tex') {
416: $text = '';
417: # $text = '%'.$text."\n";
418: }
419: $result.=$text;
420: }
421: } elsif (($token->[0] eq 'D')) {
422: if ($metamode<1 && $target eq 'web') {
423: my $text=$token->[1];
424: $result.=$text;
425: }
426: } elsif ($token->[0] eq 'PI') {
427: if ($metamode<1 && $target eq 'web') {
428: $result=$token->[2];
429: }
430: } elsif ($token->[0] eq 'S') {
431: # add tag to stack
432: push (@$stack,$token->[1]);
433: # add parameters list to another stack
434: push (@$parstack,&parstring($token));
435: &increasedepth($token);
436: if ($Apache::lonxml::usestyle &&
437: exists($$style_for_target{$token->[1]})) {
438: $Apache::lonxml::usestyle=0;
439: my $string=$$style_for_target{$token->[1]}.
440: '<LONCAPA_INTERNAL_TURN_STYLE_ON />';
441: &Apache::lonxml::newparser($pars,\$string);
442: $Apache::lonxml::style_values=$$parstack[-1];
443: $Apache::lonxml::style_end_values=$$parstack[-1];
444: } else {
445: $result = &callsub("start_$token->[1]", $target, $token, $stack,
446: $parstack, $pars, $safeeval, $style_for_target);
447: }
448: } elsif ($token->[0] eq 'E') {
449: if ($Apache::lonxml::usestyle &&
450: exists($$style_for_target{'/'."$token->[1]"})) {
451: $Apache::lonxml::usestyle=0;
452: my $string=$$style_for_target{'/'.$token->[1]}.
453: '<LONCAPA_INTERNAL_TURN_STYLE_ON end="'.$token->[1].'" />';
454: &Apache::lonxml::newparser($pars,\$string);
455: $Apache::lonxml::style_values=$Apache::lonxml::style_end_values;
456: $Apache::lonxml::style_end_values='';
457: $dontpop=1;
458: } else {
459: #clear out any tags that didn't end
460: while ($token->[1] ne $$stack['-1'] && ($#$stack > -1)) {
461: my $lasttag=$$stack[-1];
462: if ($token->[1] =~ /^\Q$lasttag\E$/i) {
463: &Apache::lonxml::warning('Using tag </'.$token->[1].'> on line '.$token->[3].' as end tag to <'.$$stack[-1].'>');
464: last;
465: } else {
466: &Apache::lonxml::warning('Found tag </'.$token->[1].'> on line '.$token->[3].' when looking for </'.$$stack[-1].'> in file');
467: &end_tag($stack,$parstack,$token);
468: }
469: }
470: $result = &callsub("end_$token->[1]", $target, $token, $stack,
471: $parstack, $pars,$safeeval, $style_for_target);
472: }
473: } else {
474: &Apache::lonxml::error("Unknown token event :$token->[0]:$token->[1]:");
475: }
476: #evaluate variable refs in result
477: if ($Apache::lonxml::post_evaluate &&$result ne "") {
478: my $extras;
479: if (!$Apache::lonxml::usestyle) {
480: $extras=$Apache::lonxml::style_values;
481: }
482: if ( $#$parstack > -1 ) {
483: $result=&Apache::run::evaluate($result,$safeeval,$extras.$$parstack[-1]);
484: } else {
485: $result= &Apache::run::evaluate($result,$safeeval,$extras);
486: }
487: }
488: $Apache::lonxml::post_evaluate=1;
489:
490: if (($token->[0] eq 'T') || ($token->[0] eq 'C') || ($token->[0] eq 'D') ) {
491: #Style file definitions should be correct
492: if ($target eq 'tex' && ($Apache::lonxml::usestyle)) {
493: $result=&latex_special_symbols($result);
494: }
495: }
496:
497: if ($Apache::lonxml::redirection) {
498: $Apache::lonxml::outputstack['-1'] .= $result;
499: } else {
500: $finaloutput.=$result;
501: }
502: $result = '';
503:
504: if ($token->[0] eq 'E' && !$dontpop) {
505: &end_tag($stack,$parstack,$token);
506: }
507: $dontpop=0;
508: }
509: if ($#$pars > -1) {
510: pop @$pars;
511: pop @Apache::lonxml::pwd;
512: }
513: }
514:
515: # if ($target eq 'meta') {
516: # $finaloutput.=&endredirection;
517: # }
518:
519: if ( $start && $target eq 'grade') { &endredirection(); }
520: if ( $Apache::lonxml::redirection > $startredirection) {
521: while ($Apache::lonxml::redirection > $startredirection) {
522: $finaloutput .= &endredirection();
523: }
524: }
525: if (($ENV{'QUERY_STRING'}) && ($target eq 'web')) {
526: $finaloutput=&afterburn($finaloutput);
527: }
528: return $finaloutput;
529: }
530:
531: ##
532: ## Looks to see if there is a subroutine defined for this tag. If so, call it,
533: ## otherwise do not call it as we do not know what it is.
534: ##
535: sub callsub {
536: my ($sub,$target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
537: my $currentstring='';
538: my $nodefault;
539: {
540: my $sub1;
541: no strict 'refs';
542: my $tag=$token->[1];
543: # get utterly rid of extended html tags
544: if ($tag=~/^x\-/i) { return ''; }
545: my $space=$Apache::lonxml::alltags{$tag}[-1];
546: if (!$space) {
547: $tag=~tr/A-Z/a-z/;
548: $sub=~tr/A-Z/a-z/;
549: $space=$Apache::lonxml::alltags{$tag}[-1]
550: }
551:
552: my $deleted=0;
553: $Apache::lonxml::curdepth=join('_',@Apache::lonxml::depthcounter);
554: if (($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,$token);
588: }
589: } elsif ($target eq 'modified') {
590: if ($token->[0] eq 'S') {
591: $currentstring = $token->[4];
592: $currentstring.=&Apache::edit::handle_insert();
593: } elsif ($token->[0] eq 'E') {
594: $currentstring = $token->[2];
595: $currentstring.=&Apache::edit::handle_insertafter($token->[1]);
596: } else {
597: $currentstring = $token->[2];
598: }
599: }
600: }
601: }
602: use strict 'refs';
603: }
604: return $currentstring;
605: }
606:
607: sub setup_globals {
608: my ($request,$target)=@_;
609: $Apache::lonxml::request=$request;
610: $errorcount=0;
611: $warningcount=0;
612: $Apache::lonxml::default_homework_loaded=0;
613: $Apache::lonxml::usestyle=1;
614: &init_counter();
615: @Apache::lonxml::pwd=();
616: @Apache::lonxml::extlinks=();
617: @Apache::lonxml::ssi_info=();
618: $Apache::lonxml::post_evaluate=1;
619: $Apache::lonxml::warnings_error_header='';
620: $Apache::lonxml::substitute_LaTeX_symbols = 1;
621: if ($target eq 'meta') {
622: $Apache::lonxml::redirection = 0;
623: $Apache::lonxml::metamode = 1;
624: $Apache::lonxml::evaluate = 1;
625: $Apache::lonxml::import = 0;
626: } elsif ($target eq 'answer') {
627: $Apache::lonxml::redirection = 0;
628: $Apache::lonxml::metamode = 1;
629: $Apache::lonxml::evaluate = 1;
630: $Apache::lonxml::import = 1;
631: } elsif ($target eq 'grade') {
632: &startredirection(); #ended in inner_xmlparse on exit
633: $Apache::lonxml::metamode = 0;
634: $Apache::lonxml::evaluate = 1;
635: $Apache::lonxml::import = 1;
636: } elsif ($target eq 'modified') {
637: $Apache::lonxml::redirection = 0;
638: $Apache::lonxml::metamode = 0;
639: $Apache::lonxml::evaluate = 0;
640: $Apache::lonxml::import = 0;
641: } elsif ($target eq 'edit') {
642: $Apache::lonxml::redirection = 0;
643: $Apache::lonxml::metamode = 0;
644: $Apache::lonxml::evaluate = 0;
645: $Apache::lonxml::import = 0;
646: } elsif ($target eq 'analyze') {
647: $Apache::lonxml::redirection = 0;
648: $Apache::lonxml::metamode = 0;
649: $Apache::lonxml::evaluate = 1;
650: $Apache::lonxml::import = 1;
651: } else {
652: $Apache::lonxml::redirection = 0;
653: $Apache::lonxml::metamode = 0;
654: $Apache::lonxml::evaluate = 1;
655: $Apache::lonxml::import = 1;
656: }
657: }
658:
659: sub init_safespace {
660: my ($target,$safeeval,$safehole,$safeinit) = @_;
661: $safeeval->deny_only(':dangerous');
662: $safeeval->reval('use Math::Complex;');
663: $safeeval->permit_only(":default");
664: $safeeval->permit("entereval");
665: $safeeval->permit(":base_math");
666: $safeeval->permit("sort");
667: $safeeval->permit("time");
668: $safeeval->deny("rand");
669: $safeeval->deny("srand");
670: $safeeval->deny(":base_io");
671: $safehole->wrap(\&Apache::scripttag::xmlparse,$safeeval,'&xmlparse');
672: $safehole->wrap(\&Apache::outputtags::multipart,$safeeval,'&multipart');
673: $safehole->wrap(\&Apache::lonnet::EXT,$safeeval,'&EXT');
674: $safehole->wrap(\&Apache::chemresponse::chem_standard_order,$safeeval,
675: '&chem_standard_order');
676: $safehole->wrap(\&Apache::response::check_status,$safeeval,'&check_status');
677:
678: $safehole->wrap(\&Apache::lonmaxima::maxima_eval,$safeeval,'&maxima_eval');
679: $safehole->wrap(\&Apache::lonmaxima::maxima_check,$safeeval,'&maxima_check');
680: $safehole->wrap(\&Apache::lonmaxima::maxima_cas_formula_fix,$safeeval,
681: '&maxima_cas_formula_fix');
682:
683: $safehole->wrap(\&Apache::caparesponse::capa_formula_fix,$safeeval,
684: '&capa_formula_fix');
685:
686: $safehole->wrap(\&Math::Cephes::asin,$safeeval,'&asin');
687: $safehole->wrap(\&Math::Cephes::acos,$safeeval,'&acos');
688: $safehole->wrap(\&Math::Cephes::atan,$safeeval,'&atan');
689: $safehole->wrap(\&Math::Cephes::sinh,$safeeval,'&sinh');
690: $safehole->wrap(\&Math::Cephes::cosh,$safeeval,'&cosh');
691: $safehole->wrap(\&Math::Cephes::tanh,$safeeval,'&tanh');
692: $safehole->wrap(\&Math::Cephes::asinh,$safeeval,'&asinh');
693: $safehole->wrap(\&Math::Cephes::acosh,$safeeval,'&acosh');
694: $safehole->wrap(\&Math::Cephes::atanh,$safeeval,'&atanh');
695: $safehole->wrap(\&Math::Cephes::erf,$safeeval,'&erf');
696: $safehole->wrap(\&Math::Cephes::erfc,$safeeval,'&erfc');
697: $safehole->wrap(\&Math::Cephes::j0,$safeeval,'&j0');
698: $safehole->wrap(\&Math::Cephes::j1,$safeeval,'&j1');
699: $safehole->wrap(\&Math::Cephes::jn,$safeeval,'&jn');
700: $safehole->wrap(\&Math::Cephes::jv,$safeeval,'&jv');
701: $safehole->wrap(\&Math::Cephes::y0,$safeeval,'&y0');
702: $safehole->wrap(\&Math::Cephes::y1,$safeeval,'&y1');
703: $safehole->wrap(\&Math::Cephes::yn,$safeeval,'&yn');
704: $safehole->wrap(\&Math::Cephes::yv,$safeeval,'&yv');
705:
706: $safehole->wrap(\&Math::Cephes::bdtr ,$safeeval,'&bdtr' );
707: $safehole->wrap(\&Math::Cephes::bdtrc ,$safeeval,'&bdtrc' );
708: $safehole->wrap(\&Math::Cephes::bdtri ,$safeeval,'&bdtri' );
709: $safehole->wrap(\&Math::Cephes::btdtr ,$safeeval,'&btdtr' );
710: $safehole->wrap(\&Math::Cephes::chdtr ,$safeeval,'&chdtr' );
711: $safehole->wrap(\&Math::Cephes::chdtrc,$safeeval,'&chdtrc');
712: $safehole->wrap(\&Math::Cephes::chdtri,$safeeval,'&chdtri');
713: $safehole->wrap(\&Math::Cephes::fdtr ,$safeeval,'&fdtr' );
714: $safehole->wrap(\&Math::Cephes::fdtrc ,$safeeval,'&fdtrc' );
715: $safehole->wrap(\&Math::Cephes::fdtri ,$safeeval,'&fdtri' );
716: $safehole->wrap(\&Math::Cephes::gdtr ,$safeeval,'&gdtr' );
717: $safehole->wrap(\&Math::Cephes::gdtrc ,$safeeval,'&gdtrc' );
718: $safehole->wrap(\&Math::Cephes::nbdtr ,$safeeval,'&nbdtr' );
719: $safehole->wrap(\&Math::Cephes::nbdtrc,$safeeval,'&nbdtrc');
720: $safehole->wrap(\&Math::Cephes::nbdtri,$safeeval,'&nbdtri');
721: $safehole->wrap(\&Math::Cephes::ndtr ,$safeeval,'&ndtr' );
722: $safehole->wrap(\&Math::Cephes::ndtri ,$safeeval,'&ndtri' );
723: $safehole->wrap(\&Math::Cephes::pdtr ,$safeeval,'&pdtr' );
724: $safehole->wrap(\&Math::Cephes::pdtrc ,$safeeval,'&pdtrc' );
725: $safehole->wrap(\&Math::Cephes::pdtri ,$safeeval,'&pdtri' );
726: $safehole->wrap(\&Math::Cephes::stdtr ,$safeeval,'&stdtr' );
727: $safehole->wrap(\&Math::Cephes::stdtri,$safeeval,'&stdtri');
728:
729: $safehole->wrap(\&Math::Cephes::Matrix::mat,$safeeval,'&mat');
730: $safehole->wrap(\&Math::Cephes::Matrix::new,$safeeval,
731: '&Math::Cephes::Matrix::new');
732: $safehole->wrap(\&Math::Cephes::Matrix::coef,$safeeval,
733: '&Math::Cephes::Matrix::coef');
734: $safehole->wrap(\&Math::Cephes::Matrix::clr,$safeeval,
735: '&Math::Cephes::Matrix::clr');
736: $safehole->wrap(\&Math::Cephes::Matrix::add,$safeeval,
737: '&Math::Cephes::Matrix::add');
738: $safehole->wrap(\&Math::Cephes::Matrix::sub,$safeeval,
739: '&Math::Cephes::Matrix::sub');
740: $safehole->wrap(\&Math::Cephes::Matrix::mul,$safeeval,
741: '&Math::Cephes::Matrix::mul');
742: $safehole->wrap(\&Math::Cephes::Matrix::div,$safeeval,
743: '&Math::Cephes::Matrix::div');
744: $safehole->wrap(\&Math::Cephes::Matrix::inv,$safeeval,
745: '&Math::Cephes::Matrix::inv');
746: $safehole->wrap(\&Math::Cephes::Matrix::transp,$safeeval,
747: '&Math::Cephes::Matrix::transp');
748: $safehole->wrap(\&Math::Cephes::Matrix::simq,$safeeval,
749: '&Math::Cephes::Matrix::simq');
750: $safehole->wrap(\&Math::Cephes::Matrix::mat_to_vec,$safeeval,
751: '&Math::Cephes::Matrix::mat_to_vec');
752: $safehole->wrap(\&Math::Cephes::Matrix::vec_to_mat,$safeeval,
753: '&Math::Cephes::Matrix::vec_to_mat');
754: $safehole->wrap(\&Math::Cephes::Matrix::check,$safeeval,
755: '&Math::Cephes::Matrix::check');
756: $safehole->wrap(\&Math::Cephes::Matrix::check,$safeeval,
757: '&Math::Cephes::Matrix::check');
758:
759: # $safehole->wrap(\&Math::Cephes::new_fract,$safeeval,'&new_fract');
760: # $safehole->wrap(\&Math::Cephes::radd,$safeeval,'&radd');
761: # $safehole->wrap(\&Math::Cephes::rsub,$safeeval,'&rsub');
762: # $safehole->wrap(\&Math::Cephes::rmul,$safeeval,'&rmul');
763: # $safehole->wrap(\&Math::Cephes::rdiv,$safeeval,'&rdiv');
764: # $safehole->wrap(\&Math::Cephes::euclid,$safeeval,'&euclid');
765:
766: $safehole->wrap(\&Math::Random::random_beta,$safeeval,'&math_random_beta');
767: $safehole->wrap(\&Math::Random::random_chi_square,$safeeval,'&math_random_chi_square');
768: $safehole->wrap(\&Math::Random::random_exponential,$safeeval,'&math_random_exponential');
769: $safehole->wrap(\&Math::Random::random_f,$safeeval,'&math_random_f');
770: $safehole->wrap(\&Math::Random::random_gamma,$safeeval,'&math_random_gamma');
771: $safehole->wrap(\&Math::Random::random_multivariate_normal,$safeeval,'&math_random_multivariate_normal');
772: $safehole->wrap(\&Math::Random::random_multinomial,$safeeval,'&math_random_multinomial');
773: $safehole->wrap(\&Math::Random::random_noncentral_chi_square,$safeeval,'&math_random_noncentral_chi_square');
774: $safehole->wrap(\&Math::Random::random_noncentral_f,$safeeval,'&math_random_noncentral_f');
775: $safehole->wrap(\&Math::Random::random_normal,$safeeval,'&math_random_normal');
776: $safehole->wrap(\&Math::Random::random_permutation,$safeeval,'&math_random_permutation');
777: $safehole->wrap(\&Math::Random::random_permuted_index,$safeeval,'&math_random_permuted_index');
778: $safehole->wrap(\&Math::Random::random_uniform,$safeeval,'&math_random_uniform');
779: $safehole->wrap(\&Math::Random::random_poisson,$safeeval,'&math_random_poisson');
780: $safehole->wrap(\&Math::Random::random_uniform_integer,$safeeval,'&math_random_uniform_integer');
781: $safehole->wrap(\&Math::Random::random_negative_binomial,$safeeval,'&math_random_negative_binomial');
782: $safehole->wrap(\&Math::Random::random_binomial,$safeeval,'&math_random_binomial');
783: $safehole->wrap(\&Math::Random::random_seed_from_phrase,$safeeval,'&random_seed_from_phrase');
784: $safehole->wrap(\&Math::Random::random_set_seed_from_phrase,$safeeval,'&random_set_seed_from_phrase');
785: $safehole->wrap(\&Math::Random::random_get_seed,$safeeval,'&random_get_seed');
786: $safehole->wrap(\&Math::Random::random_set_seed,$safeeval,'&random_set_seed');
787: $safehole->wrap(\&Apache::lonxml::error,$safeeval,'&LONCAPA_INTERNAL_ERROR');
788: $safehole->wrap(\&Apache::lonxml::debug,$safeeval,'&LONCAPA_INTERNAL_DEBUG');
789: $safehole->wrap(\&Apache::lonnet::logthis,$safeeval,'&LONCAPA_INTERNAL_LOGTHIS');
790: $safehole->wrap(\&Apache::inputtags::finalizeawards,$safeeval,'&LONCAPA_INTERNAL_FINALIZEAWARDS');
791: $safehole->wrap(\&Apache::caparesponse::get_sigrange,$safeeval,'&LONCAPA_INTERNAL_get_sigrange');
792: # use Data::Dumper;
793: # $safehole->wrap(\&Data::Dumper::Dumper,$safeeval,'&LONCAPA_INTERNAL_Dumper');
794: #need to inspect this class of ops
795: # $safeeval->deny(":base_orig");
796: $safeeval->permit("require");
797: $safeinit .= ';$external::target="'.$target.'";';
798: &Apache::run::run($safeinit,$safeeval);
799: &initialize_rndseed($safeeval);
800: }
801:
802: sub clean_safespace {
803: my ($safeeval) = @_;
804: delete_package_recurse($safeeval->{Root});
805: }
806:
807: sub delete_package_recurse {
808: my ($package) = @_;
809: my @subp;
810: {
811: no strict 'refs';
812: while (my ($key,$val) = each(%{*{"$package\::"}})) {
813: if (!defined($val)) { next; }
814: local (*ENTRY) = $val;
815: if (defined *ENTRY{HASH} && $key =~ /::$/ &&
816: $key ne "main::" && $key ne "<none>::")
817: {
818: my ($p) = $package ne "main" ? "$package\::" : "";
819: ($p .= $key) =~ s/::$//;
820: push(@subp,$p);
821: }
822: }
823: }
824: foreach my $p (@subp) {
825: delete_package_recurse($p);
826: }
827: Symbol::delete_package($package);
828: }
829:
830: sub initialize_rndseed {
831: my ($safeeval)=@_;
832: my $rndseed;
833: my ($symb,$courseid,$domain,$name) = &Apache::lonnet::whichuser();
834: $rndseed=&Apache::lonnet::rndseed($symb,$courseid,$domain,$name);
835: my $safeinit = '$external::randomseed="'.$rndseed.'";';
836: &Apache::lonxml::debug("Setting rndseed to $rndseed");
837: &Apache::run::run($safeinit,$safeeval);
838: }
839:
840: sub default_homework_load {
841: my ($safeeval)=@_;
842: &Apache::lonxml::debug('Loading default_homework');
843: my $default=&Apache::lonnet::getfile('/home/httpd/html/res/adm/includes/default_homework.lcpm');
844: if ($default eq -1) {
845: &Apache::lonxml::error("<b>Unable to find <i>default_homework.lcpm</i></b>");
846: } else {
847: &Apache::run::run($default,$safeeval);
848: $Apache::lonxml::default_homework_loaded=1;
849: }
850: }
851:
852: {
853: my $alarm_depth;
854: sub init_alarm {
855: alarm(0);
856: $alarm_depth=0;
857: }
858:
859: sub start_alarm {
860: if ($alarm_depth<1) {
861: my $old=alarm($Apache::lonnet::perlvar{'lonScriptTimeout'});
862: if ($old) {
863: &Apache::lonxml::error("Cancelled an alarm of $old, this shouldn't occur.");
864: }
865: }
866: $alarm_depth++;
867: }
868:
869: sub end_alarm {
870: $alarm_depth--;
871: if ($alarm_depth<1) { alarm(0); }
872: }
873: }
874: my $metamode_was;
875: sub startredirection {
876: if (!$Apache::lonxml::redirection) {
877: $metamode_was=$Apache::lonxml::metamode;
878: }
879: $Apache::lonxml::metamode=0;
880: $Apache::lonxml::redirection++;
881: push (@Apache::lonxml::outputstack, '');
882: }
883:
884: sub endredirection {
885: if (!$Apache::lonxml::redirection) {
886: &Apache::lonxml::error("Endredirection was called before a startredirection, perhaps you have unbalanced tags. Some debugging information:".join ":",caller);
887: return '';
888: }
889: $Apache::lonxml::redirection--;
890: if (!$Apache::lonxml::redirection) {
891: $Apache::lonxml::metamode=$metamode_was;
892: }
893: pop @Apache::lonxml::outputstack;
894: }
895:
896: sub end_tag {
897: my ($tagstack,$parstack,$token)=@_;
898: pop(@$tagstack);
899: pop(@$parstack);
900: &decreasedepth($token);
901: }
902:
903: sub initdepth {
904: @Apache::lonxml::depthcounter=();
905: $Apache::lonxml::depth=-1;
906: $Apache::lonxml::olddepth=-1;
907: }
908:
909: my @timers;
910: my $lasttime;
911: sub increasedepth {
912: my ($token) = @_;
913: $Apache::lonxml::depth++;
914: $Apache::lonxml::depthcounter[$Apache::lonxml::depth]++;
915: if ($Apache::lonxml::depthcounter[$Apache::lonxml::depth]==1) {
916: $Apache::lonxml::olddepth=$Apache::lonxml::depth;
917: }
918: my $time;
919: if ($Apache::lonxml::debug eq "1") {
920: push(@timers,[&gettimeofday()]);
921: $time=&tv_interval($lasttime);
922: $lasttime=[&gettimeofday()];
923: }
924: my $spacing=' 'x($Apache::lonxml::depth-1);
925: my $curdepth=join('_',@Apache::lonxml::depthcounter);
926: &Apache::lonxml::debug("s$spacing$Apache::lonxml::depth : $Apache::lonxml::olddepth : $curdepth : $token->[1] : $time : \n");
927: #print "<br />s $Apache::lonxml::depth : $Apache::lonxml::olddepth : $curdepth : $token->[1]\n";
928: }
929:
930: sub decreasedepth {
931: my ($token) = @_;
932: $Apache::lonxml::depth--;
933: if ($Apache::lonxml::depth<$Apache::lonxml::olddepth-1) {
934: $#Apache::lonxml::depthcounter--;
935: $Apache::lonxml::olddepth=$Apache::lonxml::depth+1;
936: }
937: if ( $Apache::lonxml::depth < -1) {
938: &Apache::lonxml::warning(&mt("Missing tags, unable to properly run file."));
939: $Apache::lonxml::depth='-1';
940: }
941: my ($timer,$time);
942: if ($Apache::lonxml::debug eq "1") {
943: $timer=pop(@timers);
944: $time=&tv_interval($lasttime);
945: $lasttime=[&gettimeofday()];
946: }
947: my $spacing=' 'x$Apache::lonxml::depth;
948: my $curdepth=join('_',@Apache::lonxml::depthcounter);
949: &Apache::lonxml::debug("e$spacing$Apache::lonxml::depth : $Apache::lonxml::olddepth : $curdepth : $token->[1] : $time : ".&tv_interval($timer)."\n");
950: #print "<br />e $Apache::lonxml::depth : $Apache::lonxml::olddepth : $token->[1] : $curdepth\n";
951: }
952:
953: sub get_id {
954: my ($parstack,$safeeval)=@_;
955: my $id= &Apache::lonxml::get_param('id',$parstack,$safeeval);
956: if ($env{'request.state'} eq 'construct' && $id =~ /(\.|_)/) {
957: &error(&mt("IDs are not allowed to contain "<tt>_</tt>" or "<tt>.</tt>""));
958: }
959: if ($id =~ /^\s*$/) { $id = $Apache::lonxml::curdepth; }
960: return $id;
961: }
962:
963: sub get_all_text_unbalanced {
964: #there is a copy of this in lonpublisher.pm
965: my($tag,$pars)= @_;
966: my $token;
967: my $result='';
968: $tag='<'.$tag.'>';
969: while ($token = $$pars[-1]->get_token) {
970: if (($token->[0] eq 'T')||($token->[0] eq 'C')||($token->[0] eq 'D')) {
971: if ($token->[0] eq 'T' && $token->[2]) {
972: $result.='<![CDATA['.$token->[1].']]>';
973: } else {
974: $result.=$token->[1];
975: }
976: } elsif ($token->[0] eq 'PI') {
977: $result.=$token->[2];
978: } elsif ($token->[0] eq 'S') {
979: $result.=$token->[4];
980: } elsif ($token->[0] eq 'E') {
981: $result.=$token->[2];
982: }
983: if ($result =~ /\Q$tag\E/is) {
984: ($result,my $redo)=$result =~ /(.*)\Q$tag\E(.*)/is;
985: #&Apache::lonxml::debug('Got a winner with leftovers ::'.$2);
986: #&Apache::lonxml::debug('Result is :'.$1);
987: $redo=$tag.$redo;
988: &Apache::lonxml::newparser($pars,\$redo);
989: last;
990: }
991: }
992: return $result
993: }
994:
995: sub increment_counter {
996: my ($increment) = @_;
997: if (defined($increment) && $increment gt 0) {
998: $Apache::lonxml::counter+=$increment;
999: } else {
1000: $Apache::lonxml::counter++;
1001: }
1002: $Apache::lonxml::counter_changed=1;
1003: }
1004:
1005: sub init_counter {
1006: if ($env{'request.state'} eq 'construct') {
1007: $Apache::lonxml::counter=1;
1008: $Apache::lonxml::counter_changed=1;
1009: } elsif (defined($env{'form.counter'})) {
1010: $Apache::lonxml::counter=$env{'form.counter'};
1011: $Apache::lonxml::counter_changed=0;
1012: } else {
1013: $Apache::lonxml::counter=1;
1014: $Apache::lonxml::counter_changed=1;
1015: }
1016: }
1017:
1018: sub store_counter {
1019: &Apache::lonnet::appenv(('form.counter' => $Apache::lonxml::counter));
1020: $Apache::lonxml::counter_changed=0;
1021: return '';
1022: }
1023:
1024: {
1025: my $state;
1026: sub clear_problem_counter {
1027: undef($state);
1028: &Apache::lonnet::delenv('form.counter');
1029: &Apache::lonxml::init_counter();
1030: &Apache::lonxml::store_counter();
1031: }
1032:
1033: sub remember_problem_counter {
1034: &Apache::lonnet::transfer_profile_to_env(undef,undef,1);
1035: $state = $env{'form.counter'};
1036: }
1037:
1038: sub restore_problem_counter {
1039: if (defined($state)) {
1040: &Apache::lonnet::appenv(('form.counter' => $state));
1041: }
1042: }
1043: sub get_problem_counter {
1044: if ($Apache::lonxml::counter_changed) { &store_counter() }
1045: &Apache::lonnet::transfer_profile_to_env(undef,undef,1);
1046: return $env{'form.counter'};
1047: }
1048: }
1049:
1050: sub get_all_text {
1051: my($tag,$pars,$style)= @_;
1052: my $gotfullstack=1;
1053: if (ref($pars) ne 'ARRAY') {
1054: $gotfullstack=0;
1055: $pars=[$pars];
1056: }
1057: if (ref($style) ne 'HASH') {
1058: $style={};
1059: }
1060: my $depth=0;
1061: my $token;
1062: my $result='';
1063: if ( $tag =~ m:^/: ) {
1064: my $tag=substr($tag,1);
1065: #&Apache::lonxml::debug("have:$tag:");
1066: my $top_empty=0;
1067: while (($depth >=0) && ($#$pars > -1) && (!$top_empty)) {
1068: while (($depth >=0) && ($token = $$pars[-1]->get_token)) {
1069: #&Apache::lonxml::debug("e token:$token->[0]:$depth:$token->[1]:".$#$pars.":".$#Apache::lonxml::pwd);
1070: if (($token->[0] eq 'T')||($token->[0] eq 'C')||($token->[0] eq 'D')) {
1071: if ($token->[2]) {
1072: $result.='<![CDATA['.$token->[1].']]>';
1073: } else {
1074: $result.=$token->[1];
1075: }
1076: } elsif ($token->[0] eq 'PI') {
1077: $result.=$token->[2];
1078: } elsif ($token->[0] eq 'S') {
1079: if ($token->[1] =~ /^\Q$tag\E$/i) { $depth++; }
1080: if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_ON$/) { $Apache::lonxml::usestyle=1; }
1081: if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_OFF$/) { $Apache::lonxml::usestyle=0; }
1082: $result.=$token->[4];
1083: } elsif ($token->[0] eq 'E') {
1084: if ( $token->[1] =~ /^\Q$tag\E$/i) { $depth--; }
1085: #skip sending back the last end tag
1086: if ($depth == 0 && exists($$style{'/'.$token->[1]}) && $Apache::lonxml::usestyle) {
1087: my $string=
1088: '<LONCAPA_INTERNAL_TURN_STYLE_OFF end="yes" />'.
1089: $$style{'/'.$token->[1]}.
1090: $token->[2].
1091: '<LONCAPA_INTERNAL_TURN_STYLE_ON />';
1092: &Apache::lonxml::newparser($pars,\$string);
1093: #&Apache::lonxml::debug("reParsing $string");
1094: next;
1095: }
1096: if ($depth > -1) {
1097: $result.=$token->[2];
1098: } else {
1099: $$pars[-1]->unget_token($token);
1100: }
1101: }
1102: }
1103: if (($depth >=0) && ($#$pars == 0) ) { $top_empty=1; }
1104: if (($depth >=0) && ($#$pars > 0) ) {
1105: pop(@$pars);
1106: pop(@Apache::lonxml::pwd);
1107: }
1108: }
1109: if ($top_empty && $depth >= 0) {
1110: #never found the end tag ran out of text, throw error send back blank
1111: &error('Never found end tag for <'.$tag.
1112: '> current string <pre>'.
1113: &HTML::Entities::encode($result,'<>&"').
1114: '</pre>');
1115: if ($gotfullstack) {
1116: my $newstring='</'.$tag.'>'.$result;
1117: &Apache::lonxml::newparser($pars,\$newstring);
1118: }
1119: $result='';
1120: }
1121: } else {
1122: while ($#$pars > -1) {
1123: while ($token = $$pars[-1]->get_token) {
1124: #&Apache::lonxml::debug("s token:$token->[0]:$depth:$token->[1]");
1125: if (($token->[0] eq 'T')||($token->[0] eq 'C')||
1126: ($token->[0] eq 'D')) {
1127: if ($token->[2]) {
1128: $result.='<![CDATA['.$token->[1].']]>';
1129: } else {
1130: $result.=$token->[1];
1131: }
1132: } elsif ($token->[0] eq 'PI') {
1133: $result.=$token->[2];
1134: } elsif ($token->[0] eq 'S') {
1135: if ( $token->[1] =~ /^\Q$tag\E$/i) {
1136: $$pars[-1]->unget_token($token); last;
1137: } else {
1138: $result.=$token->[4];
1139: }
1140: if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_ON$/) { $Apache::lonxml::usestyle=1; }
1141: if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_OFF$/) { $Apache::lonxml::usestyle=0; }
1142: } elsif ($token->[0] eq 'E') {
1143: $result.=$token->[2];
1144: }
1145: }
1146: if (($#$pars > 0) ) {
1147: pop(@$pars);
1148: pop(@Apache::lonxml::pwd);
1149: } else { last; }
1150: }
1151: }
1152: #&Apache::lonxml::debug("Exit:$result:");
1153: return $result
1154: }
1155:
1156: sub newparser {
1157: my ($parser,$contentref,$dir) = @_;
1158: push (@$parser,HTML::LCParser->new($contentref));
1159: $$parser[-1]->xml_mode(1);
1160: $$parser[-1]->marked_sections(1);
1161: if ( $dir eq '' ) {
1162: push (@Apache::lonxml::pwd, $Apache::lonxml::pwd[$#Apache::lonxml::pwd]);
1163: } else {
1164: push (@Apache::lonxml::pwd, $dir);
1165: }
1166: }
1167:
1168: sub parstring {
1169: my ($token) = @_;
1170: my (@vars,@values);
1171: foreach my $attr (@{$token->[3]}) {
1172: if ($attr!~/\W/) {
1173: my $val=$token->[2]->{$attr};
1174: $val =~ s/([\%\@\\\"\'])/\\$1/g;
1175: $val =~ s/(\$[^\{a-zA-Z_])/\\$1/g;
1176: $val =~ s/(\$)$/\\$1/;
1177: #if ($val =~ m/^[\%\@]/) { $val="\\".$val; }
1178: push(@vars,"\$$attr");
1179: push(@values,"\"$val\"");
1180: }
1181: }
1182: my $var_init =
1183: (@vars) ? 'my ('.join(',',@vars).') = ('.join(',',@values).');'
1184: : '';
1185: return $var_init;
1186: }
1187:
1188: sub extlink {
1189: my ($res,$exact)=@_;
1190: if (!$exact) {
1191: $res=&Apache::lonnet::hreflocation($Apache::lonxml::pwd[-1],$res);
1192: }
1193: push(@Apache::lonxml::extlinks,$res)
1194: }
1195:
1196: sub writeallows {
1197: unless ($#extlinks>=0) { return; }
1198: my $thisurl = &Apache::lonnet::clutter(shift);
1199: if ($env{'httpref.'.$thisurl}) {
1200: $thisurl=$env{'httpref.'.$thisurl};
1201: }
1202: my $thisdir=$thisurl;
1203: $thisdir=~s/\/[^\/]+$//;
1204: my %httpref=();
1205: foreach (@extlinks) {
1206: $httpref{'httpref.'.
1207: &Apache::lonnet::hreflocation($thisdir,$_)}=$thisurl;
1208: }
1209: @extlinks=();
1210: &Apache::lonnet::appenv(%httpref);
1211: }
1212:
1213: sub register_ssi {
1214: my ($url,%form)=@_;
1215: push (@Apache::lonxml::ssi_info,{'url'=>$url,'form'=>\%form});
1216: return '';
1217: }
1218:
1219: sub do_registered_ssi {
1220: foreach my $info (@Apache::lonxml::ssi_info) {
1221: my %form=%{ $info->{'form'}};
1222: my $url=$info->{'url'};
1223: &Apache::lonnet::ssi($url,%form);
1224: }
1225: }
1226: #
1227: # Afterburner handles anchors, highlights and links
1228: #
1229: sub afterburn {
1230: my $result=shift;
1231: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
1232: ['highlight','anchor','link']);
1233: if ($env{'form.highlight'}) {
1234: foreach (split(/\,/,$env{'form.highlight'})) {
1235: my $anchorname=$_;
1236: my $matchthis=$anchorname;
1237: $matchthis=~s/\_+/\\s\+/g;
1238: $result=~s/(\Q$matchthis\E)/\<font color=\"red\"\>$1\<\/font\>/gs;
1239: }
1240: }
1241: if ($env{'form.link'}) {
1242: foreach (split(/\,/,$env{'form.link'})) {
1243: my ($anchorname,$linkurl)=split(/\>/,$_);
1244: my $matchthis=$anchorname;
1245: $matchthis=~s/\_+/\\s\+/g;
1246: $result=~s/(\Q$matchthis\E)/\<a href=\"$linkurl\"\>$1\<\/a\>/gs;
1247: }
1248: }
1249: if ($env{'form.anchor'}) {
1250: my $anchorname=$env{'form.anchor'};
1251: my $matchthis=$anchorname;
1252: $matchthis=~s/\_+/\\s\+/g;
1253: $result=~s/(\Q$matchthis\E)/\<a name=\"$anchorname\"\>$1\<\/a\>/s;
1254: $result.=(<<"ENDSCRIPT");
1255: <script type="text/javascript">
1256: document.location.hash='$anchorname';
1257: </script>
1258: ENDSCRIPT
1259: }
1260: return $result;
1261: }
1262:
1263: sub storefile {
1264: my ($file,$contents)=@_;
1265: &Apache::lonnet::correct_line_ends(\$contents);
1266: if (my $fh=Apache::File->new('>'.$file)) {
1267: print $fh $contents;
1268: $fh->close();
1269: return 1;
1270: } else {
1271: &warning("Unable to save file $file");
1272: return 0;
1273: }
1274: }
1275:
1276: sub createnewhtml {
1277: my $title=&mt('Title of document goes here');
1278: my $body=&mt('Body of document goes here');
1279: my $filecontents=(<<SIMPLECONTENT);
1280: <html>
1281: <head>
1282: <title>$title</title>
1283: </head>
1284: <body bgcolor="#FFFFFF">
1285: $body
1286: </body>
1287: </html>
1288: SIMPLECONTENT
1289: return $filecontents;
1290: }
1291:
1292: sub createnewsty {
1293: my $filecontents=(<<SIMPLECONTENT);
1294: <definetag name="">
1295: <render>
1296: <web></web>
1297: <tex></tex>
1298: </render>
1299: </definetag>
1300: SIMPLECONTENT
1301: return $filecontents;
1302: }
1303:
1304:
1305: sub inserteditinfo {
1306: my ($result,$filecontents,$filetype)=@_;
1307: $filecontents = &HTML::Entities::encode($filecontents,'<>&"');
1308: # my $editheader='<a href="#editsection">Edit below</a><hr />';
1309: my $xml_help = '';
1310: my $initialize='';
1311: if ($filetype eq 'html') {
1312: my $addbuttons=&Apache::lonhtmlcommon::htmlareaaddbuttons();
1313: $initialize=&Apache::lonhtmlcommon::spellheader();
1314: if (!&Apache::lonhtmlcommon::htmlareablocked() &&
1315: &Apache::lonhtmlcommon::htmlareabrowser()) {
1316: $initialize.=(<<FULLPAGE);
1317: <script type="text/javascript">
1318: $addbuttons
1319:
1320: HTMLArea.loadPlugin("FullPage");
1321:
1322: function initDocument() {
1323: var editor=new HTMLArea("filecont",config);
1324: editor.registerPlugin(FullPage);
1325: editor.generate();
1326: }
1327: </script>
1328: FULLPAGE
1329: } else {
1330: $initialize.=(<<FULLPAGE);
1331: <script type="text/javascript">
1332: $addbuttons
1333: function initDocument() {
1334: }
1335: </script>
1336: FULLPAGE
1337: }
1338: $result=~s/\<body([^\>]*)\>/\<body onload="initDocument()" $1\>/i;
1339: $xml_help=&Apache::loncommon::helpLatexCheatsheet();
1340: }
1341: my $cleanbut = '';
1342:
1343: my $titledisplay=&display_title();
1344: my %lt=&Apache::lonlocal::texthash('st' => 'Save and Edit',
1345: 'vi' => 'Save and View',
1346: 'dv' => 'Discard Edits and View',
1347: 'un' => 'undo',
1348: 'ed' => 'Edit');
1349: my $buttons=(<<BUTTONS);
1350: $cleanbut
1351: <input type="submit" name="discardview" accesskey="d" value="$lt{'dv'}" />
1352: <input type="submit" name="Undo" accesskey="u" value="$lt{'un'}" /><hr>
1353: <input type="submit" name="savethisfile" accesskey="s" value="$lt{'st'}" />
1354: <input type="submit" name="viewmode" accesskey="v" value="$lt{'vi'}" />
1355: BUTTONS
1356: $buttons.=&Apache::lonhtmlcommon::spelllink('xmledit','filecont');
1357: my $editfooter=(<<ENDFOOTER);
1358: $initialize
1359: <hr />
1360: <a name="editsection" />
1361: <form method="post" name="xmledit">
1362: $xml_help
1363: <input type="hidden" name="editmode" value="$lt{'ed'}" />
1364: $buttons<br />
1365: <textarea style="width:100%" cols="80" rows="44" name="filecont" id="filecont">$filecontents</textarea>
1366: <br />$buttons
1367: <br />
1368: </form>
1369: $titledisplay
1370: </body>
1371: ENDFOOTER
1372: # $result=~s/(\<body[^\>]*\>)/$1$editheader/is;
1373: $result=~s/(\<\/body\>)/$editfooter/is;
1374: return $result;
1375: }
1376:
1377: sub get_target {
1378: my $viewgrades=&Apache::lonnet::allowed('vgr',$env{'request.course.id'});
1379: if ( $env{'request.state'} eq 'published') {
1380: if ( defined($env{'form.grade_target'})
1381: && ($viewgrades == 'F' )) {
1382: return ($env{'form.grade_target'});
1383: } elsif (defined($env{'form.grade_target'})) {
1384: if (($env{'form.grade_target'} eq 'web') ||
1385: ($env{'form.grade_target'} eq 'tex') ) {
1386: return $env{'form.grade_target'}
1387: } else {
1388: return 'web';
1389: }
1390: } else {
1391: return 'web';
1392: }
1393: } elsif ($env{'request.state'} eq 'construct') {
1394: if ( defined($env{'form.grade_target'})) {
1395: return ($env{'form.grade_target'});
1396: } else {
1397: return 'web';
1398: }
1399: } else {
1400: return 'web';
1401: }
1402: }
1403:
1404: sub handler {
1405: my $request=shift;
1406:
1407: my $target=&get_target();
1408:
1409: $Apache::lonxml::debug=$env{'user.debug'};
1410:
1411: &Apache::loncommon::content_type($request,'text/html');
1412: &Apache::loncommon::no_cache($request);
1413: if ($env{'request.state'} eq 'published') {
1414: $request->set_last_modified(&Apache::lonnet::metadata($request->uri,
1415: 'lastrevisiondate'));
1416: }
1417: $request->send_http_header;
1418:
1419: return OK if $request->header_only;
1420:
1421:
1422: my $file=&Apache::lonnet::filelocation("",$request->uri);
1423: my $filetype;
1424: if ($file =~ /\.sty$/) {
1425: $filetype='sty';
1426: } else {
1427: $filetype='html';
1428: }
1429: #
1430: # Edit action? Save file.
1431: #
1432: if (!($env{'request.state'} eq 'published')) {
1433: if ($env{'form.savethisfile'} || $env{'form.viewmode'} || $env{'form.Undo'}) {
1434: my $html_file=&Apache::lonnet::getfile($file);
1435: my $error = &Apache::lonhomework::handle_save_or_undo($request, \$html_file, \$env{'form.filecont'});
1436: }
1437: }
1438: my %mystyle;
1439: my $result = '';
1440: my $filecontents=&Apache::lonnet::getfile($file);
1441: if ($filecontents eq -1) {
1442: my $start_page=&Apache::loncommon::start_page('File Error');
1443: my $end_page=&Apache::loncommon::end_page();
1444: my $fnf=&mt('File not found');
1445: $result=(<<ENDNOTFOUND);
1446: $start_page
1447: <b>$fnf: $file</b>
1448: $end_page
1449: ENDNOTFOUND
1450: $filecontents='';
1451: if ($env{'request.state'} ne 'published') {
1452: if ($filetype eq 'sty') {
1453: $filecontents=&createnewsty();
1454: } else {
1455: $filecontents=&createnewhtml();
1456: }
1457: $env{'form.editmode'}='Edit'; #force edit mode
1458: }
1459: } else {
1460: unless ($env{'request.state'} eq 'published') {
1461: if ($filecontents=~/BEGIN LON-CAPA Internal/) {
1462: &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.'));
1463: }
1464: #
1465: # we are in construction space, see if edit mode forced
1466: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
1467: ['editmode']);
1468: }
1469: &Apache::lonnet::logthis("edit mode is ".$env{'form.editmode'});
1470: if (!$env{'form.editmode'} || $env{'form.viewmode'} || $env{'form.discardview'}) {
1471: $result = &Apache::lonxml::xmlparse($request,$target,$filecontents,
1472: '',%mystyle);
1473: undef($Apache::lonhomework::parsing_a_task);
1474: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
1475: ['rawmode']);
1476: if ($env{'form.rawmode'}) { $result = $filecontents; }
1477: }
1478: }
1479:
1480: #
1481: # Edit action? Insert editing commands
1482: #
1483: unless ($env{'request.state'} eq 'published') {
1484: if ($env{'form.editmode'} && (!($env{'form.viewmode'})) && (!($env{'form.discardview'})))
1485: {
1486: my $displayfile=$request->uri;
1487: $displayfile=~s/^\/[^\/]*//;
1488: my %options = ();
1489: if ($env{'environment.remote'} ne 'off') {
1490: $options{'bgcolor'} = '#FFFFFF';
1491: }
1492: my $start_page = &Apache::loncommon::start_page(undef,undef,
1493: \%options);
1494: $result=$start_page.
1495: &Apache::lonxml::message_location().'<h3>'.
1496: $displayfile.
1497: '</h3>'.&Apache::loncommon::end_page();
1498: $result=&inserteditinfo($result,$filecontents,$filetype);
1499: }
1500: }
1501: if ($filetype eq 'html') { &writeallows($request->uri); }
1502:
1503:
1504: &Apache::lonxml::add_messages(\$result);
1505: $request->print($result);
1506:
1507: return OK;
1508: }
1509:
1510: sub display_title {
1511: my $result;
1512: if ($env{'request.state'} eq 'construct') {
1513: my $title=&Apache::lonnet::gettitle();
1514: if (!defined($title) || $title eq '') {
1515: $title = $env{'request.filename'};
1516: $title = substr($title, rindex($title, '/') + 1);
1517: }
1518: $result = "<script type='text/javascript'>top.document.title = '$title - LON-CAPA Construction Space';</script>";
1519: }
1520: return $result;
1521: }
1522:
1523: sub debug {
1524: if ($Apache::lonxml::debug eq "1") {
1525: $|=1;
1526: my $request=$Apache::lonxml::request;
1527: if (!$request) {
1528: eval { $request=Apache->request; };
1529: }
1530: if (!$request) {
1531: eval { $request=Apache2::RequestUtil->request; };
1532: }
1533: $request->print('<font size="-2"><pre>DEBUG:'.&HTML::Entities::encode($_[0],'<>&"')."</pre></font>\n");
1534: #&Apache::lonnet::logthis($_[0]);
1535: }
1536: }
1537:
1538: sub show_error_warn_msg {
1539: if ($env{'request.filename'} eq '/home/httpd/html/res/lib/templates/simpleproblem.problem' &&
1540: &Apache::lonnet::allowed('mdc',$env{'request.course.id'})) {
1541: return 1;
1542: }
1543: return (($Apache::lonxml::debug eq 1) ||
1544: ($env{'request.state'} eq 'construct') ||
1545: ($Apache::lonhomework::browse eq 'F'
1546: &&
1547: $env{'form.show_errors'} eq 'on'));
1548: }
1549:
1550: sub error {
1551: $errorcount++;
1552: if ( &show_error_warn_msg() ) {
1553: # If printing in construction space, put the error inside <pre></pre>
1554: push(@Apache::lonxml::error_messages,
1555: $Apache::lonxml::warnings_error_header.
1556: "<b>ERROR:</b>".join("<br />\n",@_)."<br />\n");
1557: $Apache::lonxml::warnings_error_header='';
1558: } else {
1559: my $errormsg;
1560: my ($symb)=&Apache::lonnet::symbread();
1561: if ( !$symb ) {
1562: #public or browsers
1563: $errormsg=&mt("An error occured while processing this resource. The author has been notified.");
1564: }
1565: my $host=$Apache::lonnet::perlvar{'lonHostID'};
1566: my $msg = join('<br />',(@_,"The error occurred on host <tt>$host</tt>"));
1567: #notify author
1568: &Apache::lonmsg::author_res_msg($env{'request.filename'},$msg);
1569: #notify course
1570: if ( $symb && $env{'request.course.id'} ) {
1571: my $cnum=$env{'course.'.$env{'request.course.id'}.'.num'};
1572: my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
1573: my (undef,%users)=&Apache::lonfeedback::decide_receiver(undef,0,1,1,1);
1574: my $declutter=&Apache::lonnet::declutter($env{'request.filename'});
1575: my $baseurl = &Apache::lonnet::clutter($declutter);
1576: my @userlist;
1577: foreach (keys %users) {
1578: my ($user,$domain) = split(/:/, $_);
1579: push(@userlist,"$user\@$domain");
1580: my $key=$declutter.'_'.$user.'_'.$domain;
1581: my %lastnotified=&Apache::lonnet::get('nohist_xmlerrornotifications',
1582: [$key],
1583: $cdom,$cnum);
1584: my $now=time;
1585: if ($now-$lastnotified{$key}>86400) {
1586: my $title = &Apache::lonnet::gettitle($symb);
1587: my $sentmessage;
1588: &Apache::lonmsg::user_normal_msg($user,$domain,
1589: "Error [$title]",$msg,'',$baseurl,'','',
1590: \$sentmessage,$symb,$title,1);
1591: &Apache::lonnet::put('nohist_xmlerrornotifications',
1592: {$key => $now},
1593: $cdom,$cnum);
1594: }
1595: }
1596: if ($env{'request.role.adv'}) {
1597: $errormsg=&mt("An error occured while processing this resource. The course personnel ([_1]) and the author have been notified.",join(', ',@userlist));
1598: } else {
1599: $errormsg=&mt("An error occured while processing this resource. The instructor has been notified.");
1600: }
1601: }
1602: push(@Apache::lonxml::error_messages,"<b>$errormsg</b> <br />");
1603: }
1604: }
1605:
1606: sub warning {
1607: $warningcount++;
1608:
1609: if ($env{'form.grade_target'} ne 'tex') {
1610: if ( &show_error_warn_msg() ) {
1611: push(@Apache::lonxml::warning_messages,
1612: $Apache::lonxml::warnings_error_header.
1613: "<b>W</b>ARNING<b>:</b>".join('<br />',@_)."<br />\n");
1614: $Apache::lonxml::warnings_error_header='';
1615: }
1616: }
1617: }
1618:
1619: sub info {
1620: if ($env{'form.grade_target'} ne 'tex'
1621: && $env{'request.state'} eq 'construct') {
1622: push(@Apache::lonxml::info_messages,join('<br />',@_)."<br />\n");
1623: }
1624: }
1625:
1626: sub message_location {
1627: return '__LONCAPA_INTERNAL_MESSAGE_LOCATION__';
1628: }
1629:
1630: sub add_messages {
1631: my ($msg)=@_;
1632: my $result=join(' ',
1633: @Apache::lonxml::info_messages,
1634: @Apache::lonxml::error_messages,
1635: @Apache::lonxml::warning_messages);
1636: undef(@Apache::lonxml::info_messages);
1637: undef(@Apache::lonxml::error_messages);
1638: undef(@Apache::lonxml::warning_messages);
1639: $$msg=~s/__LONCAPA_INTERNAL_MESSAGE_LOCATION__/$result/;
1640: $$msg=~s/__LONCAPA_INTERNAL_MESSAGE_LOCATION__//g;
1641: }
1642:
1643: sub get_param {
1644: my ($param,$parstack,$safeeval,$context,$case_insensitive) = @_;
1645: if ( ! $context ) { $context = -1; }
1646: my $args ='';
1647: if ( $#$parstack > (-2-$context) ) { $args=$$parstack[$context]; }
1648: if ( ! $Apache::lonxml::usestyle ) {
1649: $args=$Apache::lonxml::style_values.$args;
1650: }
1651: if ( ! $args ) { return undef; }
1652: if ( $case_insensitive ) {
1653: if ($args =~ s/(my (?:.*))(\$\Q$param\E[,\)])/$1.lc($2)/ei) {
1654: return &Apache::run::run("{$args;".'return $'.$param.'}',
1655: $safeeval); #'
1656: } else {
1657: return undef;
1658: }
1659: } else {
1660: if ( $args =~ /my .*\$\Q$param\E[,\)]/ ) {
1661: return &Apache::run::run("{$args;".'return $'.$param.'}',
1662: $safeeval); #'
1663: } else {
1664: return undef;
1665: }
1666: }
1667: }
1668:
1669: sub get_param_var {
1670: my ($param,$parstack,$safeeval,$context,$case_insensitive) = @_;
1671: if ( ! $context ) { $context = -1; }
1672: my $args ='';
1673: if ( $#$parstack > (-2-$context) ) { $args=$$parstack[$context]; }
1674: if ( ! $Apache::lonxml::usestyle ) {
1675: $args=$Apache::lonxml::style_values.$args;
1676: }
1677: &Apache::lonxml::debug("Args are $args param is $param");
1678: if ($case_insensitive) {
1679: if (! ($args=~s/(my (?:.*))(\$\Q$param\E[,\)])/$1.lc($2)/ei)) {
1680: return undef;
1681: }
1682: } elsif ( $args !~ /my .*\$\Q$param\E[,\)]/ ) { return undef; }
1683: my $value=&Apache::run::run("{$args;".'return $'.$param.'}',$safeeval); #'
1684: &Apache::lonxml::debug("first run is $value");
1685: if ($value =~ /^[\$\@\%][a-zA-Z_]\w*$/) {
1686: &Apache::lonxml::debug("doing second");
1687: my @result=&Apache::run::run("return $value",$safeeval,1);
1688: if (!defined($result[0])) {
1689: return $value
1690: } else {
1691: if (wantarray) { return @result; } else { return $result[0]; }
1692: }
1693: } else {
1694: return $value;
1695: }
1696: }
1697:
1698: sub register_insert {
1699: my @data = split /\n/, &Apache::lonnet::getfile('/home/httpd/lonTabs/insertlist.tab');
1700: my $i;
1701: my $tagnum=0;
1702: my @order;
1703: for ($i=0;$i < $#data; $i++) {
1704: my $line = $data[$i];
1705: if ( $line =~ /^\#/ || $line =~ /^\s*\n/) { next; }
1706: if ( $line =~ /TABLE/ ) { last; }
1707: my ($tag,$descrip,$color,$function,$show,$helpfile,$helpdesc) = split(/,/, $line);
1708: if ($tag) {
1709: $insertlist{"$tagnum.tag"} = $tag;
1710: $insertlist{"$tagnum.description"} = $descrip;
1711: $insertlist{"$tagnum.color"} = $color;
1712: $insertlist{"$tagnum.function"} = $function;
1713: if (!defined($show)) { $show='yes'; }
1714: $insertlist{"$tagnum.show"}= $show;
1715: $insertlist{"$tagnum.helpfile"} = $helpfile;
1716: $insertlist{"$tagnum.helpdesc"} = $helpdesc;
1717: $insertlist{"$tag.num"}=$tagnum;
1718: $tagnum++;
1719: }
1720: }
1721: $i++; #skipping TABLE line
1722: $tagnum = 0;
1723: for (;$i < $#data;$i++) {
1724: my $line = $data[$i];
1725: my ($mnemonic,@which) = split(/ +/,$line);
1726: my $tag = $insertlist{"$tagnum.tag"};
1727: for (my $j=0;$j <=$#which;$j++) {
1728: if ( $which[$j] eq 'Y' ) {
1729: if ($insertlist{"$j.show"} ne 'no') {
1730: push(@{ $insertlist{"$tag.which"} },$j);
1731: }
1732: }
1733: }
1734: $tagnum++;
1735: }
1736: }
1737:
1738: sub description {
1739: my ($token)=@_;
1740: my $tagnum;
1741: my $tag=$token->[1];
1742: foreach my $namespace (reverse @Apache::lonxml::namespace) {
1743: my $testtag=$namespace.'::'.$tag;
1744: $tagnum=$insertlist{"$testtag.num"};
1745: if (defined($tagnum)) { last; }
1746: }
1747: if (!defined ($tagnum)) { $tagnum=$Apache::lonxml::insertlist{"$tag.num"}; }
1748: return $insertlist{$tagnum.'.description'};
1749: }
1750:
1751: # Returns a list containing the help file, and the description
1752: sub helpinfo {
1753: my ($token)=@_;
1754: my $tagnum;
1755: my $tag=$token->[1];
1756: foreach my $namespace (reverse @Apache::lonxml::namespace) {
1757: my $testtag=$namespace.'::'.$tag;
1758: $tagnum=$insertlist{"$testtag.num"};
1759: if (defined($tagnum)) { last; }
1760: }
1761: if (!defined ($tagnum)) { $tagnum=$Apache::lonxml::insertlist{"$tag.num"}; }
1762: return ($insertlist{$tagnum.'.helpfile'}, $insertlist{$tagnum.'.helpdesc'});
1763: }
1764:
1765: 1;
1766: __END__
1767:
1768:
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