1: # The LearningOnline Network with CAPA
2: # XML Parser Module
3: #
4: # $Id: lonxml.pm,v 1.399 2006/03/08 22:15:47 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 $warningcount @htmlareafields);
44: use strict;
45: use HTML::LCParser();
46: use HTML::TreeBuilder();
47: use HTML::Entities();
48: use Safe();
49: use Safe::Hole();
50: use Math::Cephes();
51: use Math::Random();
52: use Opcode();
53: use POSIX qw(strftime);
54: use Time::HiRes qw( gettimeofday tv_interval );
55: use Symbol();
56:
57: sub register {
58: my ($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::lonlocal;
92:
93: #================================================== Main subroutine: xmlparse
94: #debugging control, to turn on debugging modify the correct handler
95: $Apache::lonxml::debug=0;
96:
97: # keeps count of the number of warnings and errors generated in a parse
98: $warningcount=0;
99: $errorcount=0;
100:
101: #path to the directory containing the file currently being processed
102: @pwd=();
103:
104: #these two are used for capturing a subset of the output for later processing,
105: #don't touch them directly use &startredirection and &endredirection
106: @outputstack = ();
107: $redirection = 0;
108:
109: #controls wheter the <import> tag actually does
110: $import = 1;
111: @extlinks=();
112:
113: # meta mode is a bit weird only some output is to be turned off
114: #<output> tag turns metamode off (defined in londefdef.pm)
115: $metamode = 0;
116:
117: # turns on and of run::evaluate actually derefencing var refs
118: $evaluate = 1;
119:
120: # data structure for eidt mode, determines what tags can go into what other tags
121: %insertlist=();
122:
123: # stores the list of active tag namespaces
124: @namespace=();
125:
126: # has the dynamic menu been updated to know about this resource
127: $Apache::lonxml::registered=0;
128:
129: # a pointer the the Apache request object
130: $Apache::lonxml::request='';
131:
132: # a problem number counter, and check on ether it is used
133: $Apache::lonxml::counter=1;
134: $Apache::lonxml::counter_changed=0;
135:
136: #internal check on whether to look at style defs
137: $Apache::lonxml::usestyle=1;
138:
139: #locations used to store the parameter string for style substitutions
140: $Apache::lonxml::style_values='';
141: $Apache::lonxml::style_end_values='';
142:
143: #array of ssi calls that need to occur after we are done parsing
144: @Apache::lonxml::ssi_info=();
145:
146: #should we do the postag variable interpolation
147: $Apache::lonxml::post_evaluate=1;
148:
149: #a header message to emit in the case of any generated warning or errors
150: $Apache::lonxml::warnings_error_header='';
151:
152: # Control whether or not LaTeX symbols should be substituted for their
153: # \ style equivalents...this may be turned off e.g. in an verbatim
154: # environment.
155:
156: $Apache::lonxml::substitute_LaTeX_symbols = 1; # Starts out on.
157:
158: sub enable_LaTeX_substitutions {
159: $Apache::lonxml::substitute_LaTeX_symbols = 1;
160: }
161: sub disable_LaTeX_substitutions {
162: $Apache::lonxml::substitute_LaTeX_symbols = 0;
163: }
164:
165: sub xmlbegin {
166: my ($style)=@_;
167: my $output='';
168: @htmlareafields=();
169: if ($env{'browser.mathml'}) {
170: $output='<?xml version="1.0"?>'
171: #.'<?xml-stylesheet type="text/css" href="/adm/MathML/mathml.css"?>'."\n"
172: # .'<!DOCTYPE html SYSTEM "/adm/MathML/mathml.dtd" '
173:
174: # .'<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd" [<!ENTITY mathns "http://www.w3.org/1998/Math/MathML">] >'
175: .'<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1 plus MathML 2.0 plus SVG 1.1//EN" "http://www.w3.org/2002/04/xhtml-math-svg/xhtml-math-svg.dtd">'
176: .'<html xmlns:math="http://www.w3.org/1998/Math/MathML" '
177: .'xmlns="http://www.w3.org/1999/xhtml">';
178: } else {
179: $output='<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html>';
180: }
181: if ($style eq 'encode') {
182: $output=&HTML::Entities::encode($output,'<>&"');
183: }
184: return $output;
185: }
186:
187: sub xmlend {
188: my ($target,$parser)=@_;
189: my $mode='xml';
190: my $status='OPEN';
191: if ($Apache::lonhomework::parsing_a_problem ||
192: $Apache::lonhomework::parsing_a_task ) {
193: $mode='problem';
194: $status=$Apache::inputtags::status[-1];
195: }
196: my $discussion;
197: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
198: ['LONCAPA_INTERNAL_no_discussion']);
199: if (! exists($env{'form.LONCAPA_INTERNAL_no_discussion'}) ||
200: $env{'form.LONCAPA_INTERNAL_no_discussion'} ne 'true') {
201: $discussion=&Apache::lonfeedback::list_discussion($mode,$status);
202: }
203: if ($target eq 'tex') {
204: $discussion.='<tex>\keephidden{ENDOFPROBLEM}\vskip 0.5mm\noindent\makebox[\textwidth/$number_of_columns][b]{\hrulefill}\end{document}</tex>';
205: &Apache::lonxml::newparser($parser,\$discussion,'');
206: return '';
207: } else {
208: return $discussion.&Apache::loncommon::endbodytag();
209: }
210: }
211:
212: sub tokeninputfield {
213: my $defhost=$Apache::lonnet::perlvar{'lonHostID'};
214: $defhost=~tr/a-z/A-Z/;
215: return (<<ENDINPUTFIELD)
216: <script type="text/javascript">
217: function updatetoken() {
218: var comp=new Array;
219: var barcode=unescape(document.tokeninput.barcode.value);
220: comp=barcode.split('*');
221: if (typeof(comp[0])!="undefined") {
222: document.tokeninput.codeone.value=comp[0];
223: }
224: if (typeof(comp[1])!="undefined") {
225: document.tokeninput.codetwo.value=comp[1];
226: }
227: if (typeof(comp[2])!="undefined") {
228: comp[2]=comp[2].toUpperCase();
229: document.tokeninput.codethree.value=comp[2];
230: }
231: document.tokeninput.barcode.value='';
232: }
233: </script>
234: <form method="post" name="tokeninput">
235: <table border="2" bgcolor="#FFFFBB">
236: <tr><th>DocID Checkin</th></tr>
237: <tr><td>
238: <table>
239: <tr>
240: <td>Scan in Barcode</td>
241: <td><input type="text" size="22" name="barcode"
242: onChange="updatetoken()"/></td>
243: </tr>
244: <tr><td><i>or</i> Type in DocID</td>
245: <td>
246: <input type="text" size="5" name="codeone" />
247: <b><font size="+2">*</font></b>
248: <input type="text" size="5" name="codetwo" />
249: <b><font size="+2">*</font></b>
250: <input type="text" size="10" name="codethree" value="$defhost"
251: onChange="this.value=this.value.toUpperCase()" />
252: </td></tr>
253: </table>
254: </td></tr>
255: <tr><td><input type="submit" value="Check in DocID" /></td></tr>
256: </table>
257: </form>
258: ENDINPUTFIELD
259: }
260:
261: sub maketoken {
262: my ($symb,$tuname,$tudom,$tcrsid)=@_;
263: unless ($symb) {
264: $symb=&Apache::lonnet::symbread();
265: }
266: unless ($tuname) {
267: $tuname=$env{'user.name'};
268: $tudom=$env{'user.domain'};
269: $tcrsid=$env{'request.course.id'};
270: }
271:
272: return &Apache::lonnet::checkout($symb,$tuname,$tudom,$tcrsid);
273: }
274:
275: sub printtokenheader {
276: my ($target,$token,$tsymb,$tcrsid,$tudom,$tuname)=@_;
277: unless ($token) { return ''; }
278:
279: my ($symb,$courseid,$domain,$name) = &Apache::lonxml::whichuser();
280: unless ($tsymb) {
281: $tsymb=$symb;
282: }
283: unless ($tuname) {
284: $tuname=$name;
285: $tudom=$domain;
286: $tcrsid=$courseid;
287: }
288:
289: my $plainname=&Apache::loncommon::plainname($tuname,$tudom);
290:
291: if ($target eq 'web') {
292: my %idhash=&Apache::lonnet::idrget($tudom,($tuname));
293: return
294: '<img align="right" src="/cgi-bin/barcode.png?encode='.$token.'" />'.
295: &mt('Checked out for').' '.$plainname.
296: '<br />'.&mt('User').': '.$tuname.' at '.$tudom.
297: '<br />'.&mt('ID').': '.$idhash{$tuname}.
298: '<br />'.&mt('CourseID').': '.$tcrsid.
299: '<br />'.&mt('Course').': '.$env{'course.'.$tcrsid.'.description'}.
300: '<br />'.&mt('DocID').': '.$token.
301: '<br />'.&mt('Time').': '.&Apache::lonlocal::locallocaltime().'<hr />';
302: } else {
303: return $token;
304: }
305: }
306:
307: sub fontsettings {
308: my $headerstring='';
309: if (($env{'browser.os'} eq 'mac') && (!$env{'browser.mathml'})) {
310: $headerstring.=
311: '<meta Content-Type="text/html; charset=x-mac-roman" />';
312: } elsif (!$env{'browser.mathml'} && $env{'browser.unicode'}) {
313: $headerstring.=
314: '<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />';
315: }
316: return $headerstring;
317: }
318:
319: sub printalltags {
320: my $temp;
321: foreach $temp (sort keys %Apache::lonxml::alltags) {
322: &Apache::lonxml::debug("$temp -- ".
323: join(',',@{ $Apache::lonxml::alltags{$temp} }));
324: }
325: }
326:
327: sub xmlparse {
328: my ($request,$target,$content_file_string,$safeinit,%style_for_target) = @_;
329:
330: &setup_globals($request,$target);
331: &Apache::inputtags::initialize_inputtags();
332: &Apache::bridgetask::initialize_bridgetask();
333: &Apache::outputtags::initialize_outputtags();
334: &Apache::edit::initialize_edit();
335: &Apache::londefdef::initialize_londefdef();
336:
337: #
338: # do we have a course style file?
339: #
340:
341: if ($env{'request.course.id'} && $env{'request.state'} ne 'construct') {
342: my $bodytext=
343: $env{'course.'.$env{'request.course.id'}.'.default_xml_style'};
344: if ($bodytext) {
345: foreach my $file (split(',',$bodytext)) {
346: my $location=&Apache::lonnet::filelocation('',$file);
347: my $styletext=&Apache::lonnet::getfile($location);
348: if ($styletext ne '-1') {
349: %style_for_target = (%style_for_target,
350: &Apache::style::styleparser($target,$styletext));
351: }
352: }
353: }
354: } elsif ($env{'construct.style'} && ($env{'request.state'} eq 'construct')) {
355: my $location=&Apache::lonnet::filelocation('',$env{'construct.style'});
356: my $styletext=&Apache::lonnet::getfile($location);
357: if ($styletext ne '-1') {
358: %style_for_target = (%style_for_target,
359: &Apache::style::styleparser($target,$styletext));
360: }
361: }
362: #&printalltags();
363: my @pars = ();
364: my $pwd=$env{'request.filename'};
365: $pwd =~ s:/[^/]*$::;
366: &newparser(\@pars,\$content_file_string,$pwd);
367:
368: my $safeeval = new Safe;
369: my $safehole = new Safe::Hole;
370: &init_safespace($target,$safeeval,$safehole,$safeinit);
371: #-------------------- Redefinition of the target in the case of compound target
372:
373: ($target, my @tenta) = split('&&',$target);
374:
375: my @stack = ();
376: my @parstack = ();
377: &initdepth();
378: &init_alarm();
379: my $finaloutput = &inner_xmlparse($target,\@stack,\@parstack,\@pars,
380: $safeeval,\%style_for_target,1);
381:
382: if ($env{'request.uri'}) {
383: &writeallows($env{'request.uri'});
384: }
385: &do_registered_ssi();
386: if ($Apache::lonxml::counter_changed) { &store_counter() }
387:
388: &clean_safespace($safeeval);
389:
390: if ($env{'form.return_only_error_and_warning_counts'}) {
391: return "$errorcount:$warningcount";
392: }
393: return $finaloutput;
394: }
395:
396: sub latex_special_symbols {
397: my ($string,$where)=@_;
398: #
399: # If e.g. in verbatim mode, then don't substitute.
400: # but return original string.
401: #
402: if (!($Apache::lonxml::substitute_LaTeX_symbols)) {
403: return $string;
404: }
405: if ($where eq 'header') {
406: $string =~ s/(\\|_|\^)/ /g;
407: $string =~ s/(\$|%|\{|\})/\\$1/g;
408: $string =~ s/_/ /g;
409: $string=&Apache::lonprintout::character_chart($string);
410: # any & or # leftover should be safe to just escape
411: $string=~s/([^\\])\&/$1\\\&/g;
412: $string=~s/([^\\])\#/$1\\\#/g;
413: } else {
414: $string=~s/\\/\\ensuremath{\\backslash}/g;
415: $string=~s/\\\%|\%/\\\%/g;
416: $string=~s/\\{|{/\\{/g;
417: $string=~s/\\}|}/\\}/g;
418: $string=~s/\\ensuremath\\{\\backslash\\}/\\ensuremath{\\backslash}/g;
419: $string=~s/\\\$|\$/\\\$/g;
420: $string=~s/\\\_|\_/\\\_/g;
421: $string=~s/([^\\]|^)(\~|\^)/$1\\$2\\strut /g;
422: $string=~s/(>|<)/\\ensuremath\{$1\}/g; #more or less
423: $string=&Apache::lonprintout::character_chart($string);
424: # any & or # leftover should be safe to just escape
425: $string=~s/\\\&|\&/\\\&/g;
426: $string=~s/\\\#|\#/\\\#/g;
427: $string=~s/\|/\$\\mid\$/g;
428: #single { or } How to escape?
429: }
430: return $string;
431: }
432:
433: sub inner_xmlparse {
434: my ($target,$stack,$parstack,$pars,$safeeval,$style_for_target,$start)=@_;
435: my $finaloutput = '';
436: my $result;
437: my $token;
438: my $dontpop=0;
439: my $startredirection = $Apache::lonxml::redirection;
440: while ( $#$pars > -1 ) {
441: while ($token = $$pars['-1']->get_token) {
442: if (($token->[0] eq 'T') || ($token->[0] eq 'C') ) {
443: if ($metamode<1) {
444: my $text=$token->[1];
445: if ($token->[0] eq 'C' && $target eq 'tex') {
446: $text = '';
447: # $text = '%'.$text."\n";
448: }
449: $result.=$text;
450: }
451: } elsif (($token->[0] eq 'D')) {
452: if ($metamode<1 && $target eq 'web') {
453: my $text=$token->[1];
454: $result.=$text;
455: }
456: } elsif ($token->[0] eq 'PI') {
457: if ($metamode<1 && $target eq 'web') {
458: $result=$token->[2];
459: }
460: } elsif ($token->[0] eq 'S') {
461: # add tag to stack
462: push (@$stack,$token->[1]);
463: # add parameters list to another stack
464: push (@$parstack,&parstring($token));
465: &increasedepth($token);
466: if ($Apache::lonxml::usestyle &&
467: exists($$style_for_target{$token->[1]})) {
468: $Apache::lonxml::usestyle=0;
469: my $string=$$style_for_target{$token->[1]}.
470: '<LONCAPA_INTERNAL_TURN_STYLE_ON />';
471: &Apache::lonxml::newparser($pars,\$string);
472: $Apache::lonxml::style_values=$$parstack[-1];
473: $Apache::lonxml::style_end_values=$$parstack[-1];
474: } else {
475: $result = &callsub("start_$token->[1]", $target, $token, $stack,
476: $parstack, $pars, $safeeval, $style_for_target);
477: }
478: } elsif ($token->[0] eq 'E') {
479: if ($Apache::lonxml::usestyle &&
480: exists($$style_for_target{'/'."$token->[1]"})) {
481: $Apache::lonxml::usestyle=0;
482: my $string=$$style_for_target{'/'.$token->[1]}.
483: '<LONCAPA_INTERNAL_TURN_STYLE_ON end="'.$token->[1].'" />';
484: &Apache::lonxml::newparser($pars,\$string);
485: $Apache::lonxml::style_values=$Apache::lonxml::style_end_values;
486: $Apache::lonxml::style_end_values='';
487: $dontpop=1;
488: } else {
489: #clear out any tags that didn't end
490: while ($token->[1] ne $$stack['-1'] && ($#$stack > -1)) {
491: my $lasttag=$$stack[-1];
492: if ($token->[1] =~ /^\Q$lasttag\E$/i) {
493: &Apache::lonxml::warning('Using tag </'.$token->[1].'> on line '.$token->[3].' as end tag to <'.$$stack[-1].'>');
494: last;
495: } else {
496: &Apache::lonxml::warning('Found tag </'.$token->[1].'> on line '.$token->[3].' when looking for </'.$$stack[-1].'> in file');
497: &end_tag($stack,$parstack,$token);
498: }
499: }
500: $result = &callsub("end_$token->[1]", $target, $token, $stack,
501: $parstack, $pars,$safeeval, $style_for_target);
502: }
503: } else {
504: &Apache::lonxml::error("Unknown token event :$token->[0]:$token->[1]:");
505: }
506: #evaluate variable refs in result
507: if ($Apache::lonxml::post_evaluate &&$result ne "") {
508: my $extras;
509: if (!$Apache::lonxml::usestyle) {
510: $extras=$Apache::lonxml::style_values;
511: }
512: if ( $#$parstack > -1 ) {
513: $result=&Apache::run::evaluate($result,$safeeval,$extras.$$parstack[-1]);
514: } else {
515: $result= &Apache::run::evaluate($result,$safeeval,$extras);
516: }
517: }
518: $Apache::lonxml::post_evaluate=1;
519:
520: if (($token->[0] eq 'T') || ($token->[0] eq 'C') || ($token->[0] eq 'D') ) {
521: #Style file definitions should be correct
522: if ($target eq 'tex' && ($Apache::lonxml::usestyle)) {
523: $result=&latex_special_symbols($result);
524: }
525: }
526:
527: if ($Apache::lonxml::redirection) {
528: $Apache::lonxml::outputstack['-1'] .= $result;
529: } else {
530: $finaloutput.=$result;
531: }
532: $result = '';
533:
534: if ($token->[0] eq 'E' && !$dontpop) {
535: &end_tag($stack,$parstack,$token);
536: }
537: $dontpop=0;
538: }
539: if ($#$pars > -1) {
540: pop @$pars;
541: pop @Apache::lonxml::pwd;
542: }
543: }
544:
545: # if ($target eq 'meta') {
546: # $finaloutput.=&endredirection;
547: # }
548:
549: if ( $start && $target eq 'grade') { &endredirection(); }
550: if ( $Apache::lonxml::redirection > $startredirection) {
551: while ($Apache::lonxml::redirection > $startredirection) {
552: $finaloutput .= &endredirection();
553: }
554: }
555: if (($ENV{'QUERY_STRING'}) && ($target eq 'web')) {
556: $finaloutput=&afterburn($finaloutput);
557: }
558: return $finaloutput;
559: }
560:
561: ##
562: ## Looks to see if there is a subroutine defined for this tag. If so, call it,
563: ## otherwise do not call it as we do not know what it is.
564: ##
565: sub callsub {
566: my ($sub,$target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
567: my $currentstring='';
568: my $nodefault;
569: {
570: my $sub1;
571: no strict 'refs';
572: my $tag=$token->[1];
573: # get utterly rid of extended html tags
574: if ($tag=~/^x\-/i) { return ''; }
575: my $space=$Apache::lonxml::alltags{$tag}[-1];
576: if (!$space) {
577: $tag=~tr/A-Z/a-z/;
578: $sub=~tr/A-Z/a-z/;
579: $space=$Apache::lonxml::alltags{$tag}[-1]
580: }
581:
582: my $deleted=0;
583: $Apache::lonxml::curdepth=join('_',@Apache::lonxml::depthcounter);
584: if (($token->[0] eq 'S') && ($target eq 'modified')) {
585: $deleted=&Apache::edit::handle_delete($space,$target,$token,$tagstack,
586: $parstack,$parser,$safeeval,
587: $style);
588: }
589: if (!$deleted) {
590: if ($space) {
591: #&Apache::lonxml::debug("Calling sub $sub in $space $metamode");
592: $sub1="$space\:\:$sub";
593: ($currentstring,$nodefault) = &$sub1($target,$token,$tagstack,
594: $parstack,$parser,$safeeval,
595: $style);
596: } else {
597: if ($target eq 'tex') {
598: # throw away tag name
599: return '';
600: }
601: #&Apache::lonxml::debug("NOT Calling sub $sub in $space $metamode");
602: if ($metamode <1) {
603: if (defined($token->[4]) && ($metamode < 1)) {
604: $currentstring = $token->[4];
605: } else {
606: $currentstring = $token->[2];
607: }
608: }
609: }
610: # &Apache::lonxml::debug("nodefalt:$nodefault:");
611: if ($currentstring eq '' && $nodefault eq '') {
612: if ($target eq 'edit') {
613: #&Apache::lonxml::debug("doing default edit for $token->[1]");
614: if ($token->[0] eq 'S') {
615: $currentstring = &Apache::edit::tag_start($target,$token);
616: } elsif ($token->[0] eq 'E') {
617: $currentstring = &Apache::edit::tag_end($target,$token);
618: }
619: } elsif ($target eq 'modified') {
620: if ($token->[0] eq 'S') {
621: $currentstring = $token->[4];
622: $currentstring.=&Apache::edit::handle_insert();
623: } elsif ($token->[0] eq 'E') {
624: $currentstring = $token->[2];
625: $currentstring.=&Apache::edit::handle_insertafter($token->[1]);
626: } else {
627: $currentstring = $token->[2];
628: }
629: }
630: }
631: }
632: use strict 'refs';
633: }
634: return $currentstring;
635: }
636:
637: sub setup_globals {
638: my ($request,$target)=@_;
639: $Apache::lonxml::request=$request;
640: $Apache::lonxml::registered = 0;
641: @Apache::lonxml::htmlareafields=();
642: $errorcount=0;
643: $warningcount=0;
644: $Apache::lonxml::default_homework_loaded=0;
645: $Apache::lonxml::usestyle=1;
646: &init_counter();
647: @Apache::lonxml::pwd=();
648: @Apache::lonxml::extlinks=();
649: @Apache::lonxml::ssi_info=();
650: $Apache::lonxml::post_evaluate=1;
651: $Apache::lonxml::warnings_error_header='';
652: $Apache::lonxml::substitute_LaTeX_symbols = 1;
653: if ($target eq 'meta') {
654: $Apache::lonxml::redirection = 0;
655: $Apache::lonxml::metamode = 1;
656: $Apache::lonxml::evaluate = 1;
657: $Apache::lonxml::import = 0;
658: } elsif ($target eq 'answer') {
659: $Apache::lonxml::redirection = 0;
660: $Apache::lonxml::metamode = 1;
661: $Apache::lonxml::evaluate = 1;
662: $Apache::lonxml::import = 1;
663: } elsif ($target eq 'grade') {
664: &startredirection(); #ended in inner_xmlparse on exit
665: $Apache::lonxml::metamode = 0;
666: $Apache::lonxml::evaluate = 1;
667: $Apache::lonxml::import = 1;
668: } elsif ($target eq 'modified') {
669: $Apache::lonxml::redirection = 0;
670: $Apache::lonxml::metamode = 0;
671: $Apache::lonxml::evaluate = 0;
672: $Apache::lonxml::import = 0;
673: } elsif ($target eq 'edit') {
674: $Apache::lonxml::redirection = 0;
675: $Apache::lonxml::metamode = 0;
676: $Apache::lonxml::evaluate = 0;
677: $Apache::lonxml::import = 0;
678: } elsif ($target eq 'analyze') {
679: $Apache::lonxml::redirection = 0;
680: $Apache::lonxml::metamode = 0;
681: $Apache::lonxml::evaluate = 1;
682: $Apache::lonxml::import = 1;
683: } else {
684: $Apache::lonxml::redirection = 0;
685: $Apache::lonxml::metamode = 0;
686: $Apache::lonxml::evaluate = 1;
687: $Apache::lonxml::import = 1;
688: }
689: }
690:
691: sub init_safespace {
692: my ($target,$safeeval,$safehole,$safeinit) = @_;
693: $safeeval->deny_only(':dangerous');
694: $safeeval->reval('use Math::Complex;');
695: $safeeval->permit_only(":default");
696: $safeeval->permit("entereval");
697: $safeeval->permit(":base_math");
698: $safeeval->permit("sort");
699: $safeeval->permit("time");
700: $safeeval->deny("rand");
701: $safeeval->deny("srand");
702: $safeeval->deny(":base_io");
703: $safehole->wrap(\&Apache::scripttag::xmlparse,$safeeval,'&xmlparse');
704: $safehole->wrap(\&Apache::outputtags::multipart,$safeeval,'&multipart');
705: $safehole->wrap(\&Apache::lonnet::EXT,$safeeval,'&EXT');
706: $safehole->wrap(\&Apache::chemresponse::chem_standard_order,$safeeval,
707: '&chem_standard_order');
708: $safehole->wrap(\&Apache::response::check_status,$safeeval,'&check_status');
709:
710: $safehole->wrap(\&Math::Cephes::asin,$safeeval,'&asin');
711: $safehole->wrap(\&Math::Cephes::acos,$safeeval,'&acos');
712: $safehole->wrap(\&Math::Cephes::atan,$safeeval,'&atan');
713: $safehole->wrap(\&Math::Cephes::sinh,$safeeval,'&sinh');
714: $safehole->wrap(\&Math::Cephes::cosh,$safeeval,'&cosh');
715: $safehole->wrap(\&Math::Cephes::tanh,$safeeval,'&tanh');
716: $safehole->wrap(\&Math::Cephes::asinh,$safeeval,'&asinh');
717: $safehole->wrap(\&Math::Cephes::acosh,$safeeval,'&acosh');
718: $safehole->wrap(\&Math::Cephes::atanh,$safeeval,'&atanh');
719: $safehole->wrap(\&Math::Cephes::erf,$safeeval,'&erf');
720: $safehole->wrap(\&Math::Cephes::erfc,$safeeval,'&erfc');
721: $safehole->wrap(\&Math::Cephes::j0,$safeeval,'&j0');
722: $safehole->wrap(\&Math::Cephes::j1,$safeeval,'&j1');
723: $safehole->wrap(\&Math::Cephes::jn,$safeeval,'&jn');
724: $safehole->wrap(\&Math::Cephes::jv,$safeeval,'&jv');
725: $safehole->wrap(\&Math::Cephes::y0,$safeeval,'&y0');
726: $safehole->wrap(\&Math::Cephes::y1,$safeeval,'&y1');
727: $safehole->wrap(\&Math::Cephes::yn,$safeeval,'&yn');
728: $safehole->wrap(\&Math::Cephes::yv,$safeeval,'&yv');
729:
730: $safehole->wrap(\&Math::Cephes::bdtr ,$safeeval,'&bdtr' );
731: $safehole->wrap(\&Math::Cephes::bdtrc ,$safeeval,'&bdtrc' );
732: $safehole->wrap(\&Math::Cephes::bdtri ,$safeeval,'&bdtri' );
733: $safehole->wrap(\&Math::Cephes::btdtr ,$safeeval,'&btdtr' );
734: $safehole->wrap(\&Math::Cephes::chdtr ,$safeeval,'&chdtr' );
735: $safehole->wrap(\&Math::Cephes::chdtrc,$safeeval,'&chdtrc');
736: $safehole->wrap(\&Math::Cephes::chdtri,$safeeval,'&chdtri');
737: $safehole->wrap(\&Math::Cephes::fdtr ,$safeeval,'&fdtr' );
738: $safehole->wrap(\&Math::Cephes::fdtrc ,$safeeval,'&fdtrc' );
739: $safehole->wrap(\&Math::Cephes::fdtri ,$safeeval,'&fdtri' );
740: $safehole->wrap(\&Math::Cephes::gdtr ,$safeeval,'&gdtr' );
741: $safehole->wrap(\&Math::Cephes::gdtrc ,$safeeval,'&gdtrc' );
742: $safehole->wrap(\&Math::Cephes::nbdtr ,$safeeval,'&nbdtr' );
743: $safehole->wrap(\&Math::Cephes::nbdtrc,$safeeval,'&nbdtrc');
744: $safehole->wrap(\&Math::Cephes::nbdtri,$safeeval,'&nbdtri');
745: $safehole->wrap(\&Math::Cephes::ndtr ,$safeeval,'&ndtr' );
746: $safehole->wrap(\&Math::Cephes::ndtri ,$safeeval,'&ndtri' );
747: $safehole->wrap(\&Math::Cephes::pdtr ,$safeeval,'&pdtr' );
748: $safehole->wrap(\&Math::Cephes::pdtrc ,$safeeval,'&pdtrc' );
749: $safehole->wrap(\&Math::Cephes::pdtri ,$safeeval,'&pdtri' );
750: $safehole->wrap(\&Math::Cephes::stdtr ,$safeeval,'&stdtr' );
751: $safehole->wrap(\&Math::Cephes::stdtri,$safeeval,'&stdtri');
752:
753: $safehole->wrap(\&Math::Cephes::Matrix::mat,$safeeval,'&mat');
754: $safehole->wrap(\&Math::Cephes::Matrix::new,$safeeval,
755: '&Math::Cephes::Matrix::new');
756: $safehole->wrap(\&Math::Cephes::Matrix::coef,$safeeval,
757: '&Math::Cephes::Matrix::coef');
758: $safehole->wrap(\&Math::Cephes::Matrix::clr,$safeeval,
759: '&Math::Cephes::Matrix::clr');
760: $safehole->wrap(\&Math::Cephes::Matrix::add,$safeeval,
761: '&Math::Cephes::Matrix::add');
762: $safehole->wrap(\&Math::Cephes::Matrix::sub,$safeeval,
763: '&Math::Cephes::Matrix::sub');
764: $safehole->wrap(\&Math::Cephes::Matrix::mul,$safeeval,
765: '&Math::Cephes::Matrix::mul');
766: $safehole->wrap(\&Math::Cephes::Matrix::div,$safeeval,
767: '&Math::Cephes::Matrix::div');
768: $safehole->wrap(\&Math::Cephes::Matrix::inv,$safeeval,
769: '&Math::Cephes::Matrix::inv');
770: $safehole->wrap(\&Math::Cephes::Matrix::transp,$safeeval,
771: '&Math::Cephes::Matrix::transp');
772: $safehole->wrap(\&Math::Cephes::Matrix::simq,$safeeval,
773: '&Math::Cephes::Matrix::simq');
774: $safehole->wrap(\&Math::Cephes::Matrix::mat_to_vec,$safeeval,
775: '&Math::Cephes::Matrix::mat_to_vec');
776: $safehole->wrap(\&Math::Cephes::Matrix::vec_to_mat,$safeeval,
777: '&Math::Cephes::Matrix::vec_to_mat');
778: $safehole->wrap(\&Math::Cephes::Matrix::check,$safeeval,
779: '&Math::Cephes::Matrix::check');
780: $safehole->wrap(\&Math::Cephes::Matrix::check,$safeeval,
781: '&Math::Cephes::Matrix::check');
782:
783: # $safehole->wrap(\&Math::Cephes::new_fract,$safeeval,'&new_fract');
784: # $safehole->wrap(\&Math::Cephes::radd,$safeeval,'&radd');
785: # $safehole->wrap(\&Math::Cephes::rsub,$safeeval,'&rsub');
786: # $safehole->wrap(\&Math::Cephes::rmul,$safeeval,'&rmul');
787: # $safehole->wrap(\&Math::Cephes::rdiv,$safeeval,'&rdiv');
788: # $safehole->wrap(\&Math::Cephes::euclid,$safeeval,'&euclid');
789:
790: $safehole->wrap(\&Math::Random::random_beta,$safeeval,'&math_random_beta');
791: $safehole->wrap(\&Math::Random::random_chi_square,$safeeval,'&math_random_chi_square');
792: $safehole->wrap(\&Math::Random::random_exponential,$safeeval,'&math_random_exponential');
793: $safehole->wrap(\&Math::Random::random_f,$safeeval,'&math_random_f');
794: $safehole->wrap(\&Math::Random::random_gamma,$safeeval,'&math_random_gamma');
795: $safehole->wrap(\&Math::Random::random_multivariate_normal,$safeeval,'&math_random_multivariate_normal');
796: $safehole->wrap(\&Math::Random::random_multinomial,$safeeval,'&math_random_multinomial');
797: $safehole->wrap(\&Math::Random::random_noncentral_chi_square,$safeeval,'&math_random_noncentral_chi_square');
798: $safehole->wrap(\&Math::Random::random_noncentral_f,$safeeval,'&math_random_noncentral_f');
799: $safehole->wrap(\&Math::Random::random_normal,$safeeval,'&math_random_normal');
800: $safehole->wrap(\&Math::Random::random_permutation,$safeeval,'&math_random_permutation');
801: $safehole->wrap(\&Math::Random::random_permuted_index,$safeeval,'&math_random_permuted_index');
802: $safehole->wrap(\&Math::Random::random_uniform,$safeeval,'&math_random_uniform');
803: $safehole->wrap(\&Math::Random::random_poisson,$safeeval,'&math_random_poisson');
804: $safehole->wrap(\&Math::Random::random_uniform_integer,$safeeval,'&math_random_uniform_integer');
805: $safehole->wrap(\&Math::Random::random_negative_binomial,$safeeval,'&math_random_negative_binomial');
806: $safehole->wrap(\&Math::Random::random_binomial,$safeeval,'&math_random_binomial');
807: $safehole->wrap(\&Math::Random::random_seed_from_phrase,$safeeval,'&random_seed_from_phrase');
808: $safehole->wrap(\&Math::Random::random_set_seed_from_phrase,$safeeval,'&random_set_seed_from_phrase');
809: $safehole->wrap(\&Math::Random::random_get_seed,$safeeval,'&random_get_seed');
810: $safehole->wrap(\&Math::Random::random_set_seed,$safeeval,'&random_set_seed');
811: $safehole->wrap(\&Apache::lonxml::error,$safeeval,'&LONCAPA_INTERNAL_ERROR');
812: $safehole->wrap(\&Apache::lonxml::debug,$safeeval,'&LONCAPA_INTERNAL_DEBUG');
813: $safehole->wrap(\&Apache::caparesponse::get_sigrange,$safeeval,'&LONCAPA_INTERNAL_get_sigrange');
814:
815: #need to inspect this class of ops
816: # $safeeval->deny(":base_orig");
817: $safeeval->permit("require");
818: $safeinit .= ';$external::target="'.$target.'";';
819: &Apache::run::run($safeinit,$safeeval);
820: &initialize_rndseed($safeeval);
821: }
822:
823: sub clean_safespace {
824: my ($safeeval) = @_;
825: delete_package_recurse($safeeval->{Root});
826: }
827:
828: sub delete_package_recurse {
829: my ($package) = @_;
830: my @subp;
831: {
832: no strict 'refs';
833: while (my ($key,$val) = each(%{*{"$package\::"}})) {
834: if (!defined($val)) { next; }
835: local (*ENTRY) = $val;
836: if (defined *ENTRY{HASH} && $key =~ /::$/ &&
837: $key ne "main::" && $key ne "<none>::")
838: {
839: my ($p) = $package ne "main" ? "$package\::" : "";
840: ($p .= $key) =~ s/::$//;
841: push(@subp,$p);
842: }
843: }
844: }
845: foreach my $p (@subp) {
846: delete_package_recurse($p);
847: }
848: Symbol::delete_package($package);
849: }
850:
851: sub initialize_rndseed {
852: my ($safeeval)=@_;
853: my $rndseed;
854: my ($symb,$courseid,$domain,$name) = &Apache::lonxml::whichuser();
855: $rndseed=&Apache::lonnet::rndseed($symb,$courseid,$domain,$name);
856: my $safeinit = '$external::randomseed="'.$rndseed.'";';
857: &Apache::lonxml::debug("Setting rndseed to $rndseed");
858: &Apache::run::run($safeinit,$safeeval);
859: }
860:
861: sub default_homework_load {
862: my ($safeeval)=@_;
863: &Apache::lonxml::debug('Loading default_homework');
864: my $default=&Apache::lonnet::getfile('/home/httpd/html/res/adm/includes/default_homework.lcpm');
865: if ($default eq -1) {
866: &Apache::lonxml::error("<b>Unable to find <i>default_homework.lcpm</i></b>");
867: } else {
868: &Apache::run::run($default,$safeeval);
869: $Apache::lonxml::default_homework_loaded=1;
870: }
871: }
872:
873: {
874: my $alarm_depth;
875: sub init_alarm {
876: alarm(0);
877: $alarm_depth=0;
878: }
879:
880: sub start_alarm {
881: if ($alarm_depth<1) {
882: my $old=alarm($Apache::lonnet::perlvar{'lonScriptTimeout'});
883: if ($old) {
884: &Apache::lonxml::error("Cancelled an alarm of $old, this shouldn't occur.");
885: }
886: }
887: $alarm_depth++;
888: }
889:
890: sub end_alarm {
891: $alarm_depth--;
892: if ($alarm_depth<1) { alarm(0); }
893: }
894: }
895: my $metamode_was;
896: sub startredirection {
897: if (!$Apache::lonxml::redirection) {
898: $metamode_was=$Apache::lonxml::metamode;
899: }
900: $Apache::lonxml::metamode=0;
901: $Apache::lonxml::redirection++;
902: push (@Apache::lonxml::outputstack, '');
903: }
904:
905: sub endredirection {
906: if (!$Apache::lonxml::redirection) {
907: &Apache::lonxml::error("Endredirection was called before a startredirection, perhaps you have unbalanced tags. Some debugging information:".join ":",caller);
908: return '';
909: }
910: $Apache::lonxml::redirection--;
911: if (!$Apache::lonxml::redirection) {
912: $Apache::lonxml::metamode=$metamode_was;
913: }
914: pop @Apache::lonxml::outputstack;
915: }
916:
917: sub end_tag {
918: my ($tagstack,$parstack,$token)=@_;
919: pop(@$tagstack);
920: pop(@$parstack);
921: &decreasedepth($token);
922: }
923:
924: sub initdepth {
925: @Apache::lonxml::depthcounter=();
926: $Apache::lonxml::depth=-1;
927: $Apache::lonxml::olddepth=-1;
928: }
929:
930: my @timers;
931: my $lasttime;
932: sub increasedepth {
933: my ($token) = @_;
934: $Apache::lonxml::depth++;
935: $Apache::lonxml::depthcounter[$Apache::lonxml::depth]++;
936: if ($Apache::lonxml::depthcounter[$Apache::lonxml::depth]==1) {
937: $Apache::lonxml::olddepth=$Apache::lonxml::depth;
938: }
939: my $time;
940: if ($Apache::lonxml::debug eq "1") {
941: push(@timers,[&gettimeofday()]);
942: $time=&tv_interval($lasttime);
943: $lasttime=[&gettimeofday()];
944: }
945: my $spacing=' 'x($Apache::lonxml::depth-1);
946: my $curdepth=join('_',@Apache::lonxml::depthcounter);
947: &Apache::lonxml::debug("s$spacing$Apache::lonxml::depth : $Apache::lonxml::olddepth : $curdepth : $token->[1] : $time : \n");
948: #print "<br />s $Apache::lonxml::depth : $Apache::lonxml::olddepth : $curdepth : $token->[1]\n";
949: }
950:
951: sub decreasedepth {
952: my ($token) = @_;
953: $Apache::lonxml::depth--;
954: if ($Apache::lonxml::depth<$Apache::lonxml::olddepth-1) {
955: $#Apache::lonxml::depthcounter--;
956: $Apache::lonxml::olddepth=$Apache::lonxml::depth+1;
957: }
958: if ( $Apache::lonxml::depth < -1) {
959: &Apache::lonxml::warning(&mt("Missing tags, unable to properly run file."));
960: $Apache::lonxml::depth='-1';
961: }
962: my ($timer,$time);
963: if ($Apache::lonxml::debug eq "1") {
964: $timer=pop(@timers);
965: $time=&tv_interval($lasttime);
966: $lasttime=[&gettimeofday()];
967: }
968: my $spacing=' 'x$Apache::lonxml::depth;
969: my $curdepth=join('_',@Apache::lonxml::depthcounter);
970: &Apache::lonxml::debug("e$spacing$Apache::lonxml::depth : $Apache::lonxml::olddepth : $curdepth : $token->[1] : $time : ".&tv_interval($timer)."\n");
971: #print "<br />e $Apache::lonxml::depth : $Apache::lonxml::olddepth : $token->[1] : $curdepth\n";
972: }
973:
974: sub get_id {
975: my ($parstack,$safeeval)=@_;
976: my $id= &Apache::lonxml::get_param('id',$parstack,$safeeval);
977: if ($env{'request.state'} eq 'construct' && $id =~ /(\.|_)/) {
978: &error(&mt("IDs are not allowed to contain "<tt>_</tt>" or "<tt>.</tt>""));
979: }
980: if ($id =~ /^\s*$/) { $id = $Apache::lonxml::curdepth; }
981: return $id;
982: }
983:
984: sub get_all_text_unbalanced {
985: #there is a copy of this in lonpublisher.pm
986: my($tag,$pars)= @_;
987: my $token;
988: my $result='';
989: $tag='<'.$tag.'>';
990: while ($token = $$pars[-1]->get_token) {
991: if (($token->[0] eq 'T')||($token->[0] eq 'C')||($token->[0] eq 'D')) {
992: if ($token->[0] eq 'T' && $token->[2]) {
993: $result.='<![CDATA['.$token->[1].']]>';
994: } else {
995: $result.=$token->[1];
996: }
997: } elsif ($token->[0] eq 'PI') {
998: $result.=$token->[2];
999: } elsif ($token->[0] eq 'S') {
1000: $result.=$token->[4];
1001: } elsif ($token->[0] eq 'E') {
1002: $result.=$token->[2];
1003: }
1004: if ($result =~ /\Q$tag\E/is) {
1005: ($result,my $redo)=$result =~ /(.*)\Q$tag\E(.*)/is;
1006: #&Apache::lonxml::debug('Got a winner with leftovers ::'.$2);
1007: #&Apache::lonxml::debug('Result is :'.$1);
1008: $redo=$tag.$redo;
1009: &Apache::lonxml::newparser($pars,\$redo);
1010: last;
1011: }
1012: }
1013: return $result
1014: }
1015:
1016: sub increment_counter {
1017: my ($increment) = @_;
1018: if (defined($increment) && $increment gt 0) {
1019: $Apache::lonxml::counter+=$increment;
1020: } else {
1021: $Apache::lonxml::counter++;
1022: }
1023: $Apache::lonxml::counter_changed=1;
1024: }
1025:
1026: sub init_counter {
1027: if ($env{'request.state'} eq 'construct') {
1028: $Apache::lonxml::counter=1;
1029: $Apache::lonxml::counter_changed=1;
1030: } elsif (defined($env{'form.counter'})) {
1031: $Apache::lonxml::counter=$env{'form.counter'};
1032: $Apache::lonxml::counter_changed=0;
1033: } else {
1034: $Apache::lonxml::counter=1;
1035: $Apache::lonxml::counter_changed=1;
1036: }
1037: }
1038:
1039: sub store_counter {
1040: &Apache::lonnet::appenv(('form.counter' => $Apache::lonxml::counter));
1041: return '';
1042: }
1043:
1044: {
1045: my $state;
1046: sub clear_problem_counter {
1047: &Apache::lonnet::logthis(" cpc called from ".(join(':',caller(0))));
1048: undef($state);
1049: &Apache::lonnet::delenv('form.counter');
1050: &Apache::lonxml::init_counter();
1051: &Apache::lonxml::store_counter();
1052: }
1053:
1054: sub remember_problem_counter {
1055: &Apache::lonnet::transfer_profile_to_env();
1056: $state = $env{'form.counter'};
1057: }
1058:
1059: sub restore_problem_counter {
1060: if (defined($state)) {
1061: &Apache::lonnet::appenv(('form.counter' => $state));
1062: }
1063: }
1064: }
1065:
1066: sub get_all_text {
1067: my($tag,$pars,$style)= @_;
1068: my $gotfullstack=1;
1069: if (ref($pars) ne 'ARRAY') {
1070: $gotfullstack=0;
1071: $pars=[$pars];
1072: }
1073: if (ref($style) ne 'HASH') {
1074: $style={};
1075: }
1076: my $depth=0;
1077: my $token;
1078: my $result='';
1079: if ( $tag =~ m:^/: ) {
1080: my $tag=substr($tag,1);
1081: #&Apache::lonxml::debug("have:$tag:");
1082: my $top_empty=0;
1083: while (($depth >=0) && ($#$pars > -1) && (!$top_empty)) {
1084: while (($depth >=0) && ($token = $$pars[-1]->get_token)) {
1085: #&Apache::lonxml::debug("e token:$token->[0]:$depth:$token->[1]:".$#$pars.":".$#Apache::lonxml::pwd);
1086: if (($token->[0] eq 'T')||($token->[0] eq 'C')||($token->[0] eq 'D')) {
1087: if ($token->[2]) {
1088: $result.='<![CDATA['.$token->[1].']]>';
1089: } else {
1090: $result.=$token->[1];
1091: }
1092: } elsif ($token->[0] eq 'PI') {
1093: $result.=$token->[2];
1094: } elsif ($token->[0] eq 'S') {
1095: if ($token->[1] =~ /^\Q$tag\E$/i) { $depth++; }
1096: if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_ON$/) { $Apache::lonxml::usestyle=1; }
1097: if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_OFF$/) { $Apache::lonxml::usestyle=0; }
1098: $result.=$token->[4];
1099: } elsif ($token->[0] eq 'E') {
1100: if ( $token->[1] =~ /^\Q$tag\E$/i) { $depth--; }
1101: #skip sending back the last end tag
1102: if ($depth == 0 && exists($$style{'/'.$token->[1]}) && $Apache::lonxml::usestyle) {
1103: my $string=
1104: '<LONCAPA_INTERNAL_TURN_STYLE_OFF end="yes" />'.
1105: $$style{'/'.$token->[1]}.
1106: $token->[2].
1107: '<LONCAPA_INTERNAL_TURN_STYLE_ON />';
1108: &Apache::lonxml::newparser($pars,\$string);
1109: #&Apache::lonxml::debug("reParsing $string");
1110: next;
1111: }
1112: if ($depth > -1) {
1113: $result.=$token->[2];
1114: } else {
1115: $$pars[-1]->unget_token($token);
1116: }
1117: }
1118: }
1119: if (($depth >=0) && ($#$pars == 0) ) { $top_empty=1; }
1120: if (($depth >=0) && ($#$pars > 0) ) {
1121: pop(@$pars);
1122: pop(@Apache::lonxml::pwd);
1123: }
1124: }
1125: if ($top_empty && $depth >= 0) {
1126: #never found the end tag ran out of text, throw error send back blank
1127: &error('Never found end tag for <'.$tag.
1128: '> current string <pre>'.
1129: &HTML::Entities::encode($result,'<>&"').
1130: '</pre>');
1131: if ($gotfullstack) {
1132: my $newstring='</'.$tag.'>'.$result;
1133: &Apache::lonxml::newparser($pars,\$newstring);
1134: }
1135: $result='';
1136: }
1137: } else {
1138: while ($#$pars > -1) {
1139: while ($token = $$pars[-1]->get_token) {
1140: #&Apache::lonxml::debug("s token:$token->[0]:$depth:$token->[1]");
1141: if (($token->[0] eq 'T')||($token->[0] eq 'C')||
1142: ($token->[0] eq 'D')) {
1143: if ($token->[2]) {
1144: $result.='<![CDATA['.$token->[1].']]>';
1145: } else {
1146: $result.=$token->[1];
1147: }
1148: } elsif ($token->[0] eq 'PI') {
1149: $result.=$token->[2];
1150: } elsif ($token->[0] eq 'S') {
1151: if ( $token->[1] =~ /^\Q$tag\E$/i) {
1152: $$pars[-1]->unget_token($token); last;
1153: } else {
1154: $result.=$token->[4];
1155: }
1156: if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_ON$/) { $Apache::lonxml::usestyle=1; }
1157: if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_OFF$/) { $Apache::lonxml::usestyle=0; }
1158: } elsif ($token->[0] eq 'E') {
1159: $result.=$token->[2];
1160: }
1161: }
1162: if (($#$pars > 0) ) {
1163: pop(@$pars);
1164: pop(@Apache::lonxml::pwd);
1165: } else { last; }
1166: }
1167: }
1168: #&Apache::lonxml::debug("Exit:$result:");
1169: return $result
1170: }
1171:
1172: sub newparser {
1173: my ($parser,$contentref,$dir) = @_;
1174: push (@$parser,HTML::LCParser->new($contentref));
1175: $$parser[-1]->xml_mode(1);
1176: $$parser[-1]->marked_sections(1);
1177: if ( $dir eq '' ) {
1178: push (@Apache::lonxml::pwd, $Apache::lonxml::pwd[$#Apache::lonxml::pwd]);
1179: } else {
1180: push (@Apache::lonxml::pwd, $dir);
1181: }
1182: }
1183:
1184: sub parstring {
1185: my ($token) = @_;
1186: my $temp='';
1187: foreach (@{$token->[3]}) {
1188: unless ($_=~/\W/) {
1189: my $val=$token->[2]->{$_};
1190: $val =~ s/([\%\@\\\"\'])/\\$1/g;
1191: $val =~ s/(\$[^{a-zA-Z_])/\\$1/g;
1192: $val =~ s/(\$)$/\\$1/;
1193: #if ($val =~ m/^[\%\@]/) { $val="\\".$val; }
1194: $temp .= "my \$$_=\"$val\";";
1195: }
1196: }
1197: return $temp;
1198: }
1199:
1200: sub extlink {
1201: my ($res,$exact)=@_;
1202: if (!$exact) {
1203: $res=&Apache::lonnet::hreflocation($Apache::lonxml::pwd[-1],$res);
1204: }
1205: push(@Apache::lonxml::extlinks,$res)
1206: }
1207:
1208: sub writeallows {
1209: unless ($#extlinks>=0) { return; }
1210: my $thisurl = &Apache::lonnet::clutter(shift);
1211: if ($env{'httpref.'.$thisurl}) {
1212: $thisurl=$env{'httpref.'.$thisurl};
1213: }
1214: my $thisdir=$thisurl;
1215: $thisdir=~s/\/[^\/]+$//;
1216: my %httpref=();
1217: foreach (@extlinks) {
1218: $httpref{'httpref.'.
1219: &Apache::lonnet::hreflocation($thisdir,$_)}=$thisurl;
1220: }
1221: @extlinks=();
1222: &Apache::lonnet::appenv(%httpref);
1223: }
1224:
1225: sub register_ssi {
1226: my ($url,%form)=@_;
1227: push (@Apache::lonxml::ssi_info,{'url'=>$url,'form'=>\%form});
1228: return '';
1229: }
1230:
1231: sub do_registered_ssi {
1232: foreach my $info (@Apache::lonxml::ssi_info) {
1233: my %form=%{ $info->{'form'}};
1234: my $url=$info->{'url'};
1235: &Apache::lonnet::ssi($url,%form);
1236: }
1237: }
1238: #
1239: # Afterburner handles anchors, highlights and links
1240: #
1241: sub afterburn {
1242: my $result=shift;
1243: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
1244: ['highlight','anchor','link']);
1245: if ($env{'form.highlight'}) {
1246: foreach (split(/\,/,$env{'form.highlight'})) {
1247: my $anchorname=$_;
1248: my $matchthis=$anchorname;
1249: $matchthis=~s/\_+/\\s\+/g;
1250: $result=~s/(\Q$matchthis\E)/\<font color=\"red\"\>$1\<\/font\>/gs;
1251: }
1252: }
1253: if ($env{'form.link'}) {
1254: foreach (split(/\,/,$env{'form.link'})) {
1255: my ($anchorname,$linkurl)=split(/\>/,$_);
1256: my $matchthis=$anchorname;
1257: $matchthis=~s/\_+/\\s\+/g;
1258: $result=~s/(\Q$matchthis\E)/\<a href=\"$linkurl\"\>$1\<\/a\>/gs;
1259: }
1260: }
1261: if ($env{'form.anchor'}) {
1262: my $anchorname=$env{'form.anchor'};
1263: my $matchthis=$anchorname;
1264: $matchthis=~s/\_+/\\s\+/g;
1265: $result=~s/(\Q$matchthis\E)/\<a name=\"$anchorname\"\>$1\<\/a\>/s;
1266: $result.=(<<"ENDSCRIPT");
1267: <script type="text/javascript">
1268: document.location.hash='$anchorname';
1269: </script>
1270: ENDSCRIPT
1271: }
1272: return $result;
1273: }
1274:
1275: sub storefile {
1276: my ($file,$contents)=@_;
1277: &Apache::lonnet::correct_line_ends(\$contents);
1278: if (my $fh=Apache::File->new('>'.$file)) {
1279: print $fh $contents;
1280: $fh->close();
1281: return 1;
1282: } else {
1283: &warning("Unable to save file $file");
1284: return 0;
1285: }
1286: }
1287:
1288: sub createnewhtml {
1289: my $title=&mt('Title of document goes here');
1290: my $body=&mt('Body of document goes here');
1291: my $filecontents=(<<SIMPLECONTENT);
1292: <html>
1293: <head>
1294: <title>$title</title>
1295: </head>
1296: <body bgcolor="#FFFFFF">
1297: $body
1298: </body>
1299: </html>
1300: SIMPLECONTENT
1301: return $filecontents;
1302: }
1303:
1304: sub createnewsty {
1305: my $filecontents=(<<SIMPLECONTENT);
1306: <definetag name="">
1307: <render>
1308: <web></web>
1309: <tex></tex>
1310: </render>
1311: </definetag>
1312: SIMPLECONTENT
1313: return $filecontents;
1314: }
1315:
1316:
1317: sub inserteditinfo {
1318: my ($result,$filecontents,$filetype)=@_;
1319: $filecontents = &HTML::Entities::encode($filecontents,'<>&"');
1320: # my $editheader='<a href="#editsection">Edit below</a><hr />';
1321: my $xml_help = '';
1322: my $initialize='';
1323: if ($filetype eq 'html') {
1324: my $addbuttons=&Apache::lonhtmlcommon::htmlareaaddbuttons();
1325: $initialize=&Apache::lonhtmlcommon::htmlareaheaders().
1326: &Apache::lonhtmlcommon::spellheader();
1327: if (!&Apache::lonhtmlcommon::htmlareablocked() &&
1328: &Apache::lonhtmlcommon::htmlareabrowser()) {
1329: $initialize.=(<<FULLPAGE);
1330: <script type="text/javascript">
1331: $addbuttons
1332:
1333: HTMLArea.loadPlugin("FullPage");
1334:
1335: function initDocument() {
1336: var editor=new HTMLArea("filecont",config);
1337: editor.registerPlugin(FullPage);
1338: editor.generate();
1339: }
1340: </script>
1341: FULLPAGE
1342: } else {
1343: $initialize.=(<<FULLPAGE);
1344: <script type="text/javascript">
1345: $addbuttons
1346: function initDocument() {
1347: }
1348: </script>
1349: FULLPAGE
1350: }
1351: $result=~s/\<body([^\>]*)\>/\<body onload="initDocument()" $1\>/i;
1352: $xml_help=&Apache::loncommon::helpLatexCheatsheet();
1353: }
1354: my $cleanbut = '';
1355:
1356: my $titledisplay=&display_title();
1357: my %lt=&Apache::lonlocal::texthash('st' => 'Save this',
1358: 'vi' => 'View',
1359: 'ed' => 'Edit');
1360: my $buttons=(<<BUTTONS);
1361: $cleanbut
1362: <input type="submit" name="savethisfile" accesskey="s" value="$lt{'st'}" />
1363: <input type="submit" name="viewmode" accesskey="v" value="$lt{'vi'}" />
1364: BUTTONS
1365: $buttons.=&Apache::lonhtmlcommon::spelllink('xmledit','filecont');
1366: $buttons.=&Apache::lonhtmlcommon::htmlareaselectactive('filecont');
1367: my $editfooter=(<<ENDFOOTER);
1368: $initialize
1369: <hr />
1370: <a name="editsection" />
1371: <form method="post" name="xmledit">
1372: $xml_help
1373: <input type="hidden" name="editmode" value="$lt{'ed'}" />
1374: $buttons<br />
1375: <textarea style="width:100%" cols="80" rows="44" name="filecont" id="filecont">$filecontents</textarea>
1376: <br />$buttons
1377: <br />
1378: </form>
1379: $titledisplay
1380: </body>
1381: ENDFOOTER
1382: # $result=~s/(\<body[^\>]*\>)/$1$editheader/is;
1383: $result=~s/(\<\/body\>)/$editfooter/is;
1384: return $result;
1385: }
1386:
1387: sub get_target {
1388: my $viewgrades=&Apache::lonnet::allowed('vgr',$env{'request.course.id'});
1389: if ( $env{'request.state'} eq 'published') {
1390: if ( defined($env{'form.grade_target'})
1391: && ($viewgrades == 'F' )) {
1392: return ($env{'form.grade_target'});
1393: } elsif (defined($env{'form.grade_target'})) {
1394: if (($env{'form.grade_target'} eq 'web') ||
1395: ($env{'form.grade_target'} eq 'tex') ) {
1396: return $env{'form.grade_target'}
1397: } else {
1398: return 'web';
1399: }
1400: } else {
1401: return 'web';
1402: }
1403: } elsif ($env{'request.state'} eq 'construct') {
1404: if ( defined($env{'form.grade_target'})) {
1405: return ($env{'form.grade_target'});
1406: } else {
1407: return 'web';
1408: }
1409: } else {
1410: return 'web';
1411: }
1412: }
1413:
1414: sub handler {
1415: my $request=shift;
1416:
1417: my $target=&get_target();
1418:
1419: $Apache::lonxml::debug=$env{'user.debug'};
1420:
1421: &Apache::loncommon::content_type($request,'text/html');
1422: &Apache::loncommon::no_cache($request);
1423: if ($env{'request.state'} eq 'published') {
1424: $request->set_last_modified(&Apache::lonnet::metadata($request->uri,
1425: 'lastrevisiondate'));
1426: }
1427: $request->send_http_header;
1428:
1429: return OK if $request->header_only;
1430:
1431:
1432: my $file=&Apache::lonnet::filelocation("",$request->uri);
1433: my $filetype;
1434: if ($file =~ /\.sty$/) {
1435: $filetype='sty';
1436: } else {
1437: $filetype='html';
1438: }
1439: #
1440: # Edit action? Save file.
1441: #
1442: unless ($env{'request.state'} eq 'published') {
1443: if ($env{'form.savethisfile'}) {
1444: if (&storefile($file,$env{'form.filecont'})) {
1445: &Apache::lonxml::info("<font COLOR=\"#0000FF\">".
1446: &mt('Updated').": ".
1447: &Apache::lonlocal::locallocaltime(time).
1448: " </font>");
1449: }
1450: }
1451: }
1452: my %mystyle;
1453: my $result = '';
1454: my $filecontents=&Apache::lonnet::getfile($file);
1455: if ($filecontents eq -1) {
1456: my $bodytag=&Apache::loncommon::bodytag('File Error');
1457: my $fnf=&mt('File not found');
1458: $result=(<<ENDNOTFOUND);
1459: <html>
1460: <head>
1461: <title>$fnf</title>
1462: </head>
1463: $bodytag
1464: <b>$fnf: $file</b>
1465: </body>
1466: </html>
1467: ENDNOTFOUND
1468: $filecontents='';
1469: if ($env{'request.state'} ne 'published') {
1470: if ($filetype eq 'sty') {
1471: $filecontents=&createnewsty();
1472: } else {
1473: $filecontents=&createnewhtml();
1474: }
1475: $env{'form.editmode'}='Edit'; #force edit mode
1476: }
1477: } else {
1478: unless ($env{'request.state'} eq 'published') {
1479: if ($filecontents=~/BEGIN LON-CAPA Internal/) {
1480: &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.'));
1481: }
1482: #
1483: # we are in construction space, see if edit mode forced
1484: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
1485: ['editmode']);
1486: }
1487: if (!$env{'form.editmode'} || $env{'form.viewmode'}) {
1488: $result = &Apache::lonxml::xmlparse($request,$target,$filecontents,
1489: '',%mystyle);
1490: undef($Apache::lonhomework::parsing_a_task);
1491: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
1492: ['rawmode']);
1493: if ($env{'form.rawmode'}) { $result = $filecontents; }
1494: }
1495: }
1496:
1497: #
1498: # Edit action? Insert editing commands
1499: #
1500: unless ($env{'request.state'} eq 'published') {
1501: if ($env{'form.editmode'} && (!($env{'form.viewmode'}))) {
1502: my $displayfile=$request->uri;
1503: $displayfile=~s/^\/[^\/]*//;
1504: my $bodytag='<body bgcolor="#FFFFFF">';
1505: if ($env{'environment.remote'} eq 'off') {
1506: $bodytag=&Apache::loncommon::bodytag();
1507: }
1508: $result='<html>'.$bodytag.
1509: &Apache::lonxml::message_location().'<h3>'.
1510: $displayfile.
1511: '</h3></body></html>';
1512: $result=&inserteditinfo($result,$filecontents,$filetype);
1513: }
1514: }
1515: if ($filetype eq 'html') { writeallows($request->uri); }
1516:
1517:
1518: &Apache::lonxml::add_messages(\$result);
1519: $request->print($result);
1520:
1521: return OK;
1522: }
1523:
1524: sub display_title {
1525: my $result;
1526: if ($env{'request.state'} eq 'construct') {
1527: my $title=&Apache::lonnet::gettitle();
1528: if (!defined($title) || $title eq '') {
1529: $title = $env{'request.filename'};
1530: $title = substr($title, rindex($title, '/') + 1);
1531: }
1532: $result = "<script type='text/javascript'>top.document.title = '$title - LON-CAPA Construction Space';</script>";
1533: }
1534: return $result;
1535: }
1536:
1537: sub debug {
1538: if ($Apache::lonxml::debug eq "1") {
1539: $|=1;
1540: my $request=$Apache::lonxml::request;
1541: if (!$request) {
1542: eval { $request=Apache->request; };
1543: }
1544: if (!$request) {
1545: eval { $request=Apache2::RequestUtil->request; };
1546: }
1547: $request->print('<font size="-2"><pre>DEBUG:'.&HTML::Entities::encode($_[0],'<>&"')."</pre></font>\n");
1548: #&Apache::lonnet::logthis($_[0]);
1549: }
1550: }
1551:
1552: sub show_error_warn_msg {
1553: if ($env{'request.filename'} eq '/home/httpd/html/res/lib/templates/simpleproblem.problem' &&
1554: &Apache::lonnet::allowed('mdc',$env{'request.course.id'})) {
1555: return 1;
1556: }
1557: return (($Apache::lonxml::debug eq 1) ||
1558: ($env{'request.state'} eq 'construct') ||
1559: ($Apache::lonhomework::browse eq 'F'
1560: &&
1561: $env{'form.show_errors'} eq 'on'));
1562: }
1563:
1564: sub error {
1565: $errorcount++;
1566: if ( &show_error_warn_msg() ) {
1567: # If printing in construction space, put the error inside <pre></pre>
1568: push(@Apache::lonxml::error_messages,
1569: $Apache::lonxml::warnings_error_header.
1570: "<b>ERROR:</b>".join("<br />\n",@_)."<br />\n");
1571: $Apache::lonxml::warnings_error_header='';
1572: } else {
1573: my $errormsg;
1574: my ($symb)=&Apache::lonnet::symbread();
1575: if ( !$symb ) {
1576: #public or browsers
1577: $errormsg=&mt("An error occured while processing this resource. The author has been notified.");
1578: }
1579: #notify author
1580: &Apache::lonmsg::author_res_msg($env{'request.filename'},join('<br />',@_));
1581: #notify course
1582: if ( $symb && $env{'request.course.id'} ) {
1583: my $cnum=$env{'course.'.$env{'request.course.id'}.'.num'};
1584: my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
1585: my (undef,%users)=&Apache::lonfeedback::decide_receiver(undef,0,1,1,1);
1586: my $declutter=&Apache::lonnet::declutter($env{'request.filename'});
1587: my @userlist;
1588: foreach (keys %users) {
1589: my ($user,$domain) = split(/:/, $_);
1590: push(@userlist,"$user\@$domain");
1591: my $key=$declutter.'_'.$user.'_'.$domain;
1592: my %lastnotified=&Apache::lonnet::get('nohist_xmlerrornotifications',
1593: [$key],
1594: $cdom,$cnum);
1595: my $now=time;
1596: if ($now-$lastnotified{$key}>86400) {
1597: &Apache::lonmsg::user_normal_msg($user,$domain,
1598: "Error [$declutter]",join('<br />',@_));
1599: &Apache::lonnet::put('nohist_xmlerrornotifications',
1600: {$key => $now},
1601: $cdom,$cnum);
1602: }
1603: }
1604: if ($env{'request.role.adv'}) {
1605: $errormsg=&mt("An error occured while processing this resource. The course personnel ([_1]) and the author have been notified.",join(', ',@userlist));
1606: } else {
1607: $errormsg=&mt("An error occured while processing this resource. The instructor has been notified.");
1608: }
1609: }
1610: push(@Apache::lonxml::error_messages,"<b>$errormsg</b> <br />");
1611: }
1612: }
1613:
1614: sub warning {
1615: $warningcount++;
1616:
1617: if ($env{'form.grade_target'} ne 'tex') {
1618: if ( &show_error_warn_msg() ) {
1619: push(@Apache::lonxml::warning_messages,
1620: $Apache::lonxml::warnings_error_header.
1621: "<b>W</b>ARNING<b>:</b>".join('<br />',@_)."<br />\n");
1622: $Apache::lonxml::warnings_error_header='';
1623: }
1624: }
1625: }
1626:
1627: sub info {
1628: if ($env{'form.grade_target'} ne 'tex'
1629: && $env{'request.state'} eq 'construct') {
1630: push(@Apache::lonxml::info_messages,join('<br />',@_)."<br />\n");
1631: }
1632: }
1633:
1634: sub message_location {
1635: return '__LONCAPA_INTERNAL_MESSAGE_LOCATION__';
1636: }
1637:
1638: sub add_messages {
1639: my ($msg)=@_;
1640: my $result=join(' ',
1641: @Apache::lonxml::info_messages,
1642: @Apache::lonxml::error_messages,
1643: @Apache::lonxml::warning_messages);
1644: undef(@Apache::lonxml::info_messages);
1645: undef(@Apache::lonxml::error_messages);
1646: undef(@Apache::lonxml::warning_messages);
1647: $$msg=~s/__LONCAPA_INTERNAL_MESSAGE_LOCATION__/$result/;
1648: $$msg=~s/__LONCAPA_INTERNAL_MESSAGE_LOCATION__//g;
1649: }
1650:
1651: sub get_param {
1652: my ($param,$parstack,$safeeval,$context,$case_insensitive) = @_;
1653: if ( ! $context ) { $context = -1; }
1654: my $args ='';
1655: if ( $#$parstack > (-2-$context) ) { $args=$$parstack[$context]; }
1656: if ( ! $Apache::lonxml::usestyle ) {
1657: $args=$Apache::lonxml::style_values.$args;
1658: }
1659: if ( ! $args ) { return undef; }
1660: if ( $case_insensitive ) {
1661: if ($args =~ s/(my \$)(\Q$param\E)(=\")/$1.lc($2).$3/ei) {
1662: return &Apache::run::run("{$args;".'return $'.$param.'}',
1663: $safeeval); #'
1664: } else {
1665: return undef;
1666: }
1667: } else {
1668: if ( $args =~ /my \$\Q$param\E=\"/ ) {
1669: return &Apache::run::run("{$args;".'return $'.$param.'}',
1670: $safeeval); #'
1671: } else {
1672: return undef;
1673: }
1674: }
1675: }
1676:
1677: sub get_param_var {
1678: my ($param,$parstack,$safeeval,$context,$case_insensitive) = @_;
1679: if ( ! $context ) { $context = -1; }
1680: my $args ='';
1681: if ( $#$parstack > (-2-$context) ) { $args=$$parstack[$context]; }
1682: if ( ! $Apache::lonxml::usestyle ) {
1683: $args=$Apache::lonxml::style_values.$args;
1684: }
1685: &Apache::lonxml::debug("Args are $args param is $param");
1686: if ($case_insensitive) {
1687: if (! ($args=~s/(my \$)(\Q$param\E)(=\")/$1.lc($2).$3/ei)) {
1688: return undef;
1689: }
1690: } elsif ( $args !~ /my \$\Q$param\E=\"/ ) { return undef; }
1691: my $value=&Apache::run::run("{$args;".'return $'.$param.'}',$safeeval); #'
1692: &Apache::lonxml::debug("first run is $value");
1693: if ($value =~ /^[\$\@\%][a-zA-Z_]\w*$/) {
1694: &Apache::lonxml::debug("doing second");
1695: my @result=&Apache::run::run("return $value",$safeeval,1);
1696: if (!defined($result[0])) {
1697: return $value
1698: } else {
1699: if (wantarray) { return @result; } else { return $result[0]; }
1700: }
1701: } else {
1702: return $value;
1703: }
1704: }
1705:
1706: sub register_insert {
1707: my @data = split /\n/, &Apache::lonnet::getfile('/home/httpd/lonTabs/insertlist.tab');
1708: my $i;
1709: my $tagnum=0;
1710: my @order;
1711: for ($i=0;$i < $#data; $i++) {
1712: my $line = $data[$i];
1713: if ( $line =~ /^\#/ || $line =~ /^\s*\n/) { next; }
1714: if ( $line =~ /TABLE/ ) { last; }
1715: my ($tag,$descrip,$color,$function,$show,$helpfile,$helpdesc) = split(/,/, $line);
1716: if ($tag) {
1717: $insertlist{"$tagnum.tag"} = $tag;
1718: $insertlist{"$tagnum.description"} = $descrip;
1719: $insertlist{"$tagnum.color"} = $color;
1720: $insertlist{"$tagnum.function"} = $function;
1721: if (!defined($show)) { $show='yes'; }
1722: $insertlist{"$tagnum.show"}= $show;
1723: $insertlist{"$tagnum.helpfile"} = $helpfile;
1724: $insertlist{"$tagnum.helpdesc"} = $helpdesc;
1725: $insertlist{"$tag.num"}=$tagnum;
1726: $tagnum++;
1727: }
1728: }
1729: $i++; #skipping TABLE line
1730: $tagnum = 0;
1731: for (;$i < $#data;$i++) {
1732: my $line = $data[$i];
1733: my ($mnemonic,@which) = split(/ +/,$line);
1734: my $tag = $insertlist{"$tagnum.tag"};
1735: for (my $j=0;$j <=$#which;$j++) {
1736: if ( $which[$j] eq 'Y' ) {
1737: if ($insertlist{"$j.show"} ne 'no') {
1738: push(@{ $insertlist{"$tag.which"} },$j);
1739: }
1740: }
1741: }
1742: $tagnum++;
1743: }
1744: }
1745:
1746: sub description {
1747: my ($token)=@_;
1748: my $tagnum;
1749: my $tag=$token->[1];
1750: foreach my $namespace (reverse @Apache::lonxml::namespace) {
1751: my $testtag=$namespace.'::'.$tag;
1752: $tagnum=$insertlist{"$testtag.num"};
1753: if (defined($tagnum)) { last; }
1754: }
1755: if (!defined ($tagnum)) { $tagnum=$Apache::lonxml::insertlist{"$tag.num"}; }
1756: return $insertlist{$tagnum.'.description'};
1757: }
1758:
1759: # Returns a list containing the help file, and the description
1760: sub helpinfo {
1761: my ($token)=@_;
1762: my $tagnum;
1763: my $tag=$token->[1];
1764: foreach my $namespace (reverse @Apache::lonxml::namespace) {
1765: my $testtag=$namespace.'::'.$tag;
1766: $tagnum=$insertlist{"$testtag.num"};
1767: if (defined($tagnum)) { last; }
1768: }
1769: if (!defined ($tagnum)) { $tagnum=$Apache::lonxml::insertlist{"$tag.num"}; }
1770: return ($insertlist{$tagnum.'.helpfile'}, $insertlist{$tagnum.'.helpdesc'});
1771: }
1772:
1773: # ----------------------------------------------------------------- whichuser
1774: # returns a list of $symb, $courseid, $domain, $name that is correct for
1775: # calls to lonnet functions for this setup.
1776: # - looks for form.grade_ parameters
1777: sub whichuser {
1778: my ($passedsymb)=@_;
1779: my ($symb,$courseid,$domain,$name,$publicuser);
1780: if (defined($env{'form.grade_symb'})) {
1781: my ($tmp_courseid)=
1782: &Apache::loncommon::get_env_multiple('form.grade_courseid');
1783: my $allowed=&Apache::lonnet::allowed('vgr',$tmp_courseid);
1784: if (!$allowed &&
1785: exists($env{'request.course.sec'}) &&
1786: $env{'request.course.sec'} !~ /^\s*$/) {
1787: $allowed=&Apache::lonnet::allowed('vgr',$tmp_courseid.
1788: '/'.$env{'request.course.sec'});
1789: }
1790: if ($allowed) {
1791: ($symb)=&Apache::loncommon::get_env_multiple('form.grade_symb');
1792: $courseid=$tmp_courseid;
1793: ($domain)=&Apache::loncommon::get_env_multiple('form.grade_domain');
1794: ($name)=&Apache::loncommon::get_env_multiple('form.grade_username');
1795: return ($symb,$courseid,$domain,$name,$publicuser);
1796: }
1797: }
1798: if (!$passedsymb) {
1799: $symb=&Apache::lonnet::symbread();
1800: } else {
1801: $symb=$passedsymb;
1802: }
1803: $courseid=$env{'request.course.id'};
1804: $domain=$env{'user.domain'};
1805: $name=$env{'user.name'};
1806: if ($name eq 'public' && $domain eq 'public') {
1807: if (!defined($env{'form.username'})) {
1808: $env{'form.username'}.=time.rand(10000000);
1809: }
1810: $name.=$env{'form.username'};
1811: }
1812: return ($symb,$courseid,$domain,$name,$publicuser);
1813: }
1814:
1815: 1;
1816: __END__
1817:
1818:
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