File:
[LON-CAPA] /
loncom /
xml /
lonxml.pm
Revision
1.481:
download - view:
text,
annotated -
select for diffs
Wed Jun 25 12:00:37 2008 UTC (15 years, 10 months ago) by
raeburn
Branches:
MAIN
CVS tags:
version_2_6_99_1,
version_2_6_99_0,
HEAD
Bug 5695.
Improved fix. Earlier fix caused other things to break (e.g., scantron grading). Now explicitly pass a grade_noincrement form element in the ssi call to inhibit the unwanted second increment of the counter when displaying submission details ("by datess and submissions" case only).
1: # The LearningOnline Network with CAPA
2: # XML Parser Module
3: #
4: # $Id: lonxml.pm,v 1.481 2008/06/25 12:00:37 raeburn Exp $
5: #
6: # Copyright Michigan State University Board of Trustees
7: #
8: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
9: #
10: # LON-CAPA is free software; you can redistribute it and/or modify
11: # it under the terms of the GNU General Public License as published by
12: # the Free Software Foundation; either version 2 of the License, or
13: # (at your option) any later version.
14: #
15: # LON-CAPA is distributed in the hope that it will be useful,
16: # but WITHOUT ANY WARRANTY; without even the implied warranty of
17: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18: # GNU General Public License for more details.
19: #
20: # You should have received a copy of the GNU General Public License
21: # along with LON-CAPA; if not, write to the Free Software
22: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23: #
24: # /home/httpd/html/adm/gpl.txt
25: #
26: # http://www.lon-capa.org/
27: #
28: # Copyright for TtHfunc and TtMfunc by Ian Hutchinson.
29: # TtHfunc and TtMfunc (the "Code") may be compiled and linked into
30: # binary executable programs or libraries distributed by the
31: # Michigan State University (the "Licensee"), but any binaries so
32: # distributed are hereby licensed only for use in the context
33: # of a program or computational system for which the Licensee is the
34: # primary author or distributor, and which performs substantial
35: # additional tasks beyond the translation of (La)TeX into HTML.
36: # The C source of the Code may not be distributed by the Licensee
37: # to any other parties under any circumstances.
38: #
39:
40:
41: package Apache::lonxml;
42: use vars
43: qw(@pwd @outputstack $redirection $import @extlinks $metamode $evaluate %insertlist @namespace $errorcount $warningcount);
44: use strict;
45: use LONCAPA;
46: use HTML::LCParser();
47: use HTML::TreeBuilder();
48: use HTML::Entities();
49: use Safe();
50: use Safe::Hole();
51: use Math::Cephes();
52: use Math::Random();
53: use Opcode();
54: use POSIX qw(strftime);
55: use Time::HiRes qw( gettimeofday tv_interval );
56: use Symbol();
57:
58: sub register {
59: my ($space,@taglist) = @_;
60: foreach my $temptag (@taglist) {
61: push(@{ $Apache::lonxml::alltags{$temptag} },$space);
62: }
63: }
64:
65: sub deregister {
66: my ($space,@taglist) = @_;
67: foreach my $temptag (@taglist) {
68: my $tempspace = $Apache::lonxml::alltags{$temptag}[-1];
69: if ($tempspace eq $space) {
70: pop(@{ $Apache::lonxml::alltags{$temptag} });
71: }
72: }
73: #&printalltags();
74: }
75:
76: use Apache::Constants qw(:common);
77: use Apache::lontexconvert();
78: use Apache::style();
79: use Apache::run();
80: use Apache::londefdef();
81: use Apache::scripttag();
82: use Apache::languagetags();
83: use Apache::edit();
84: use Apache::inputtags();
85: use Apache::outputtags();
86: use Apache::lonnet;
87: use Apache::File();
88: use Apache::loncommon();
89: use Apache::lonfeedback();
90: use Apache::lonmsg();
91: use Apache::loncacc();
92: use Apache::lonmaxima();
93: use Apache::lonlocal;
94:
95: #==================================== Main subroutine: xmlparse
96:
97: #debugging control, to turn on debugging modify the correct handler
98:
99: $Apache::lonxml::debug=0;
100:
101: # keeps count of the number of warnings and errors generated in a parse
102: $warningcount=0;
103: $errorcount=0;
104:
105: #path to the directory containing the file currently being processed
106: @pwd=();
107:
108: #these two are used for capturing a subset of the output for later processing,
109: #don't touch them directly use &startredirection and &endredirection
110: @outputstack = ();
111: $redirection = 0;
112:
113: #controls wheter the <import> tag actually does
114: $import = 1;
115: @extlinks=();
116:
117: # meta mode is a bit weird only some output is to be turned off
118: #<output> tag turns metamode off (defined in londefdef.pm)
119: $metamode = 0;
120:
121: # turns on and of run::evaluate actually derefencing var refs
122: $evaluate = 1;
123:
124: # data structure for eidt mode, determines what tags can go into what other tags
125: %insertlist=();
126:
127: # stores the list of active tag namespaces
128: @namespace=();
129:
130: # stores all Scrit Vars displays for later showing
131: my @script_var_displays=();
132:
133: # a pointer the the Apache request object
134: $Apache::lonxml::request='';
135:
136: # a problem number counter, and check on ether it is used
137: $Apache::lonxml::counter=1;
138: $Apache::lonxml::counter_changed=0;
139:
140: # Part counter hash. In analysis mode, the
141: # problems can use this to record which parts increment the counter
142: # by how much. The counter subs will maintain this hash via
143: # their optional part parameters. Note that the assumption is that
144: # analysis is done in one request and therefore it is not necessary to
145: # save this information request-to-request.
146:
147:
148: %Apache::lonxml::counters_per_part = ();
149:
150: #internal check on whether to look at style defs
151: $Apache::lonxml::usestyle=1;
152:
153: #locations used to store the parameter string for style substitutions
154: $Apache::lonxml::style_values='';
155: $Apache::lonxml::style_end_values='';
156:
157: #array of ssi calls that need to occur after we are done parsing
158: @Apache::lonxml::ssi_info=();
159:
160: #should we do the postag variable interpolation
161: $Apache::lonxml::post_evaluate=1;
162:
163: #a header message to emit in the case of any generated warning or errors
164: $Apache::lonxml::warnings_error_header='';
165:
166: # Control whether or not LaTeX symbols should be substituted for their
167: # \ style equivalents...this may be turned off e.g. in an verbatim
168: # environment.
169:
170: $Apache::lonxml::substitute_LaTeX_symbols = 1; # Starts out on.
171:
172: sub enable_LaTeX_substitutions {
173: $Apache::lonxml::substitute_LaTeX_symbols = 1;
174: }
175: sub disable_LaTeX_substitutions {
176: $Apache::lonxml::substitute_LaTeX_symbols = 0;
177: }
178:
179: sub xmlend {
180: my ($target,$parser)=@_;
181: my $mode='xml';
182: my $status='OPEN';
183: if ($Apache::lonhomework::parsing_a_problem ||
184: $Apache::lonhomework::parsing_a_task ) {
185: $mode='problem';
186: $status=$Apache::inputtags::status[-1];
187: }
188: my $discussion;
189: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
190: ['LONCAPA_INTERNAL_no_discussion']);
191: if (! exists($env{'form.LONCAPA_INTERNAL_no_discussion'}) ||
192: $env{'form.LONCAPA_INTERNAL_no_discussion'} ne 'true') {
193: $discussion=&Apache::lonfeedback::list_discussion($mode,$status);
194: }
195: if ($target eq 'tex') {
196: $discussion.='<tex>\keephidden{ENDOFPROBLEM}\vskip 0.5mm\noindent\makebox[\textwidth/$number_of_columns][b]{\hrulefill}\end{document}</tex>';
197: &Apache::lonxml::newparser($parser,\$discussion,'');
198: return '';
199: }
200:
201: return $discussion;
202: }
203:
204: sub tokeninputfield {
205: my $defhost=$Apache::lonnet::perlvar{'lonHostID'};
206: $defhost=~tr/a-z/A-Z/;
207: return (<<ENDINPUTFIELD)
208: <script type="text/javascript">
209: function updatetoken() {
210: var comp=new Array;
211: var barcode=unescape(document.tokeninput.barcode.value);
212: comp=barcode.split('*');
213: if (typeof(comp[0])!="undefined") {
214: document.tokeninput.codeone.value=comp[0];
215: }
216: if (typeof(comp[1])!="undefined") {
217: document.tokeninput.codetwo.value=comp[1];
218: }
219: if (typeof(comp[2])!="undefined") {
220: comp[2]=comp[2].toUpperCase();
221: document.tokeninput.codethree.value=comp[2];
222: }
223: document.tokeninput.barcode.value='';
224: }
225: </script>
226: <form method="post" name="tokeninput">
227: <table border="2" bgcolor="#FFFFBB">
228: <tr><th>DocID Checkin</th></tr>
229: <tr><td>
230: <table>
231: <tr>
232: <td>Scan in Barcode</td>
233: <td><input type="text" size="22" name="barcode"
234: onChange="updatetoken()"/></td>
235: </tr>
236: <tr><td><i>or</i> Type in DocID</td>
237: <td>
238: <input type="text" size="5" name="codeone" />
239: <b><font size="+2">*</font></b>
240: <input type="text" size="5" name="codetwo" />
241: <b><font size="+2">*</font></b>
242: <input type="text" size="10" name="codethree" value="$defhost"
243: onChange="this.value=this.value.toUpperCase()" />
244: </td></tr>
245: </table>
246: </td></tr>
247: <tr><td><input type="submit" value="Check in DocID" /></td></tr>
248: </table>
249: </form>
250: ENDINPUTFIELD
251: }
252:
253: sub maketoken {
254: my ($symb,$tuname,$tudom,$tcrsid)=@_;
255: unless ($symb) {
256: $symb=&Apache::lonnet::symbread();
257: }
258: unless ($tuname) {
259: $tuname=$env{'user.name'};
260: $tudom=$env{'user.domain'};
261: $tcrsid=$env{'request.course.id'};
262: }
263:
264: return &Apache::lonnet::checkout($symb,$tuname,$tudom,$tcrsid);
265: }
266:
267: sub printtokenheader {
268: my ($target,$token,$tsymb,$tcrsid,$tudom,$tuname)=@_;
269: unless ($token) { return ''; }
270:
271: my ($symb,$courseid,$domain,$name) = &Apache::lonnet::whichuser();
272: unless ($tsymb) {
273: $tsymb=$symb;
274: }
275: unless ($tuname) {
276: $tuname=$name;
277: $tudom=$domain;
278: $tcrsid=$courseid;
279: }
280:
281: my $plainname=&Apache::loncommon::plainname($tuname,$tudom);
282:
283: if ($target eq 'web') {
284: my %idhash=&Apache::lonnet::idrget($tudom,($tuname));
285: return
286: '<img align="right" src="/cgi-bin/barcode.png?encode='.$token.'" />'.
287: &mt('Checked out for').' '.$plainname.
288: '<br />'.&mt('User').': '.$tuname.' at '.$tudom.
289: '<br />'.&mt('ID').': '.$idhash{$tuname}.
290: '<br />'.&mt('CourseID').': '.$tcrsid.
291: '<br />'.&mt('Course').': '.$env{'course.'.$tcrsid.'.description'}.
292: '<br />'.&mt('DocID').': '.$token.
293: '<br />'.&mt('Time').': '.&Apache::lonlocal::locallocaltime().'<hr />';
294: } else {
295: return $token;
296: }
297: }
298:
299: sub printalltags {
300: my $temp;
301: foreach $temp (sort keys %Apache::lonxml::alltags) {
302: &Apache::lonxml::debug("$temp -- ".
303: join(',',@{ $Apache::lonxml::alltags{$temp} }));
304: }
305: }
306:
307: sub xmlparse {
308: my ($request,$target,$content_file_string,$safeinit,%style_for_target) = @_;
309:
310: &setup_globals($request,$target);
311: &Apache::inputtags::initialize_inputtags();
312: &Apache::bridgetask::initialize_bridgetask();
313: &Apache::outputtags::initialize_outputtags();
314: &Apache::edit::initialize_edit();
315: &Apache::londefdef::initialize_londefdef();
316:
317: #
318: # do we have a course style file?
319: #
320:
321: if ($env{'request.course.id'} && $env{'request.state'} ne 'construct') {
322: my $bodytext=
323: $env{'course.'.$env{'request.course.id'}.'.default_xml_style'};
324: if ($bodytext) {
325: foreach my $file (split(',',$bodytext)) {
326: my $location=&Apache::lonnet::filelocation('',$file);
327: my $styletext=&Apache::lonnet::getfile($location);
328: if ($styletext ne '-1') {
329: %style_for_target = (%style_for_target,
330: &Apache::style::styleparser($target,$styletext));
331: }
332: }
333: }
334: } elsif ($env{'construct.style'}
335: && ($env{'request.state'} eq 'construct')) {
336: my $location=&Apache::lonnet::filelocation('',$env{'construct.style'});
337: my $styletext=&Apache::lonnet::getfile($location);
338: if ($styletext ne '-1') {
339: %style_for_target = (%style_for_target,
340: &Apache::style::styleparser($target,$styletext));
341: }
342: }
343: #&printalltags();
344: my @pars = ();
345: my $pwd=$env{'request.filename'};
346: $pwd =~ s:/[^/]*$::;
347: &newparser(\@pars,\$content_file_string,$pwd);
348:
349: my $safeeval = new Safe;
350: my $safehole = new Safe::Hole;
351: &init_safespace($target,$safeeval,$safehole,$safeinit);
352: #-------------------- Redefinition of the target in the case of compound target
353:
354: ($target, my @tenta) = split('&&',$target);
355:
356: my @stack = ();
357: my @parstack = ();
358: &initdepth();
359: &init_alarm();
360: my $finaloutput = &inner_xmlparse($target,\@stack,\@parstack,\@pars,
361: $safeeval,\%style_for_target,1);
362:
363: if (@stack) {
364: &warning("At end of file some tags were still left unclosed, ".
365: '<tt><'.join('></tt>, <tt><',reverse(@stack)).
366: '></tt>');
367: }
368: if ($env{'request.uri'}) {
369: &writeallows($env{'request.uri'});
370: }
371: &do_registered_ssi();
372: if ($Apache::lonxml::counter_changed) { &store_counter() }
373:
374: &clean_safespace($safeeval);
375:
376: if (@script_var_displays) {
377: $finaloutput .= join('',@script_var_displays);
378: undef(@script_var_displays);
379: }
380: &init_state();
381: if ($env{'form.return_only_error_and_warning_counts'}) {
382: if ($env{'request.filename'}=~/\.(html|htm|xml)$/i) {
383: my $error=&verify_html($content_file_string);
384: if ($error) { $errorcount++; }
385: }
386: return "$errorcount:$warningcount";
387: }
388: return $finaloutput;
389: }
390:
391: sub latex_special_symbols {
392: my ($string,$where)=@_;
393: #
394: # If e.g. in verbatim mode, then don't substitute.
395: # but return original string.
396: #
397: if (!($Apache::lonxml::substitute_LaTeX_symbols)) {
398: return $string;
399: }
400: if ($where eq 'header') {
401: $string =~ s/\\/\$\\backslash\$/g; # \ -> $\backslash$ per LaTex line by line pg 10.
402: $string =~ s/(\$|%|\{|\})/\\$1/g;
403: $string=&Apache::lonprintout::character_chart($string);
404: # any & or # leftover should be safe to just escape
405: $string=~s/([^\\])\&/$1\\\&/g;
406: $string=~s/([^\\])\#/$1\\\#/g;
407: $string =~ s/_/\\_/g; # _ -> \_
408: $string =~ s/\^/\\\^{}/g; # ^ -> \^{}
409: } else {
410: $string=~s/\\/\\ensuremath{\\backslash}/g;
411: $string=~s/\\\%|\%/\\\%/g;
412: $string=~s/\\{|{/\\{/g;
413: $string=~s/\\}|}/\\}/g;
414: $string=~s/\\ensuremath\\{\\backslash\\}/\\ensuremath{\\backslash}/g;
415: $string=~s/\\\$|\$/\\\$/g;
416: $string=~s/\\\_|\_/\\\_/g;
417: $string=~s/([^\\]|^)(\~|\^)/$1\\$2\\strut /g;
418: $string=~s/(>|<)/\\ensuremath\{$1\}/g; #more or less
419: $string=&Apache::lonprintout::character_chart($string);
420: # any & or # leftover should be safe to just escape
421: $string=~s/\\\&|\&/\\\&/g;
422: $string=~s/\\\#|\#/\\\#/g;
423: $string=~s/\|/\$\\mid\$/g;
424: #single { or } How to escape?
425: }
426: return $string;
427: }
428:
429: sub inner_xmlparse {
430: my ($target,$stack,$parstack,$pars,$safeeval,$style_for_target,$start)=@_;
431: my $finaloutput = '';
432: my $result;
433: my $token;
434: my $dontpop=0;
435: my $startredirection = $Apache::lonxml::redirection;
436: while ( $#$pars > -1 ) {
437: while ($token = $$pars['-1']->get_token) {
438: if (($token->[0] eq 'T') || ($token->[0] eq 'C') ) {
439: if ($metamode<1) {
440: my $text=$token->[1];
441: if ($token->[0] eq 'C' && $target eq 'tex') {
442: $text = '';
443: # $text = '%'.$text."\n";
444: }
445: $result.=$text;
446: }
447: } elsif (($token->[0] eq 'D')) {
448: if ($metamode<1 && $target eq 'web') {
449: my $text=$token->[1];
450: $result.=$text;
451: }
452: } elsif ($token->[0] eq 'PI') {
453: if ($metamode<1 && $target eq 'web') {
454: $result=$token->[2];
455: }
456: } elsif ($token->[0] eq 'S') {
457: # add tag to stack
458: push (@$stack,$token->[1]);
459: # add parameters list to another stack
460: push (@$parstack,&parstring($token));
461: &increasedepth($token);
462: if ($Apache::lonxml::usestyle &&
463: exists($$style_for_target{$token->[1]})) {
464: $Apache::lonxml::usestyle=0;
465: my $string=$$style_for_target{$token->[1]}.
466: '<LONCAPA_INTERNAL_TURN_STYLE_ON />';
467: &Apache::lonxml::newparser($pars,\$string);
468: $Apache::lonxml::style_values=$$parstack[-1];
469: $Apache::lonxml::style_end_values=$$parstack[-1];
470: } else {
471: $result = &callsub("start_$token->[1]", $target, $token, $stack,
472: $parstack, $pars, $safeeval, $style_for_target);
473: }
474: } elsif ($token->[0] eq 'E') {
475: if ($Apache::lonxml::usestyle &&
476: exists($$style_for_target{'/'."$token->[1]"})) {
477: $Apache::lonxml::usestyle=0;
478: my $string=$$style_for_target{'/'.$token->[1]}.
479: '<LONCAPA_INTERNAL_TURN_STYLE_ON end="'.$token->[1].'" />';
480: &Apache::lonxml::newparser($pars,\$string);
481: $Apache::lonxml::style_values=$Apache::lonxml::style_end_values;
482: $Apache::lonxml::style_end_values='';
483: $dontpop=1;
484: } else {
485: #clear out any tags that didn't end
486: while ($token->[1] ne $$stack['-1'] && ($#$stack > -1)) {
487: my $lasttag=$$stack[-1];
488: if ($token->[1] =~ /^\Q$lasttag\E$/i) {
489: &Apache::lonxml::warning('Using tag </'.$token->[1].'> on line '.$token->[3].' as end tag to <'.$$stack[-1].'>');
490: last;
491: } else {
492: &Apache::lonxml::warning('Found tag </'.$token->[1].'> on line '.$token->[3].' when looking for </'.$$stack[-1].'> in file');
493: &end_tag($stack,$parstack,$token);
494: }
495: }
496: $result = &callsub("end_$token->[1]", $target, $token, $stack,
497: $parstack, $pars,$safeeval, $style_for_target);
498: }
499: } else {
500: &Apache::lonxml::error("Unknown token event :$token->[0]:$token->[1]:");
501: }
502: #evaluate variable refs in result
503: if ($Apache::lonxml::post_evaluate &&$result ne "") {
504: my $extras;
505: if (!$Apache::lonxml::usestyle) {
506: $extras=$Apache::lonxml::style_values;
507: }
508: if ( $#$parstack > -1 ) {
509: $result=&Apache::run::evaluate($result,$safeeval,$extras.$$parstack[-1]);
510: } else {
511: $result= &Apache::run::evaluate($result,$safeeval,$extras);
512: }
513: }
514: $Apache::lonxml::post_evaluate=1;
515:
516: if (($token->[0] eq 'T') || ($token->[0] eq 'C') || ($token->[0] eq 'D') ) {
517: #Style file definitions should be correct
518: if ($target eq 'tex' && ($Apache::lonxml::usestyle)) {
519: $result=&latex_special_symbols($result);
520: }
521: }
522:
523: if ($Apache::lonxml::redirection) {
524: $Apache::lonxml::outputstack['-1'] .= $result;
525: } else {
526: $finaloutput.=$result;
527: }
528: $result = '';
529:
530: if ($token->[0] eq 'E' && !$dontpop) {
531: &end_tag($stack,$parstack,$token);
532: }
533: $dontpop=0;
534: }
535: if ($#$pars > -1) {
536: pop @$pars;
537: pop @Apache::lonxml::pwd;
538: }
539: }
540:
541: # if ($target eq 'meta') {
542: # $finaloutput.=&endredirection;
543: # }
544:
545: if ( $start && $target eq 'grade') { &endredirection(); }
546: if ( $Apache::lonxml::redirection > $startredirection) {
547: while ($Apache::lonxml::redirection > $startredirection) {
548: $finaloutput .= &endredirection();
549: }
550: }
551: if (($ENV{'QUERY_STRING'}) && ($target eq 'web')) {
552: $finaloutput=&afterburn($finaloutput);
553: }
554: return $finaloutput;
555: }
556:
557: ##
558: ## Looks to see if there is a subroutine defined for this tag. If so, call it,
559: ## otherwise do not call it as we do not know what it is.
560: ##
561: sub callsub {
562: my ($sub,$target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
563: my $currentstring='';
564: my $nodefault;
565: {
566: my $sub1;
567: no strict 'refs';
568: my $tag=$token->[1];
569: # get utterly rid of extended html tags
570: if ($tag=~/^x\-/i) { return ''; }
571: my $space=$Apache::lonxml::alltags{$tag}[-1];
572: if (!$space) {
573: $tag=~tr/A-Z/a-z/;
574: $sub=~tr/A-Z/a-z/;
575: $space=$Apache::lonxml::alltags{$tag}[-1]
576: }
577:
578: my $deleted=0;
579: if (($token->[0] eq 'S') && ($target eq 'modified')) {
580: $deleted=&Apache::edit::handle_delete($space,$target,$token,$tagstack,
581: $parstack,$parser,$safeeval,
582: $style);
583: }
584: if (!$deleted) {
585: if ($space) {
586: #&Apache::lonxml::debug("Calling sub $sub in $space $metamode");
587: $sub1="$space\:\:$sub";
588: ($currentstring,$nodefault) = &$sub1($target,$token,$tagstack,
589: $parstack,$parser,$safeeval,
590: $style);
591: } else {
592: if ($target eq 'tex') {
593: # throw away tag name
594: return '';
595: }
596: #&Apache::lonxml::debug("NOT Calling sub $sub in $space $metamode");
597: if ($metamode <1) {
598: if (defined($token->[4]) && ($metamode < 1)) {
599: $currentstring = $token->[4];
600: } else {
601: $currentstring = $token->[2];
602: }
603: }
604: }
605: # &Apache::lonxml::debug("nodefalt:$nodefault:");
606: if ($currentstring eq '' && $nodefault eq '') {
607: if ($target eq 'edit') {
608: #&Apache::lonxml::debug("doing default edit for $token->[1]");
609: if ($token->[0] eq 'S') {
610: $currentstring = &Apache::edit::tag_start($target,$token);
611: } elsif ($token->[0] eq 'E') {
612: $currentstring = &Apache::edit::tag_end($target,$token);
613: }
614: }
615: }
616: if ($target eq 'modified' && $nodefault eq '') {
617: if ($currentstring eq '') {
618: if ($token->[0] eq 'S') {
619: $currentstring = $token->[4];
620: } elsif ($token->[0] eq 'E') {
621: $currentstring = $token->[2];
622: } else {
623: $currentstring = $token->[2];
624: }
625: }
626: if ($token->[0] eq 'S') {
627: $currentstring.=&Apache::edit::handle_insert();
628: } elsif ($token->[0] eq 'E') {
629: $currentstring.=&Apache::edit::handle_insertafter($token->[1]);
630: }
631: }
632: }
633: use strict 'refs';
634: }
635: return $currentstring;
636: }
637:
638: {
639: my %state;
640:
641: sub init_state {
642: undef(%state);
643: }
644:
645: sub set_state {
646: my ($key,$value) = @_;
647: $state{$key} = $value;
648: return $value;
649: }
650: sub get_state {
651: my ($key) = @_;
652: return $state{$key};
653: }
654: }
655:
656: sub setup_globals {
657: my ($request,$target)=@_;
658: $Apache::lonxml::request=$request;
659: $errorcount=0;
660: $warningcount=0;
661: $Apache::lonxml::default_homework_loaded=0;
662: $Apache::lonxml::usestyle=1;
663: &init_counter();
664: &clear_bubble_lines_for_part();
665: &init_state();
666: &set_state('target',$target);
667: @Apache::lonxml::pwd=();
668: @Apache::lonxml::extlinks=();
669: @script_var_displays=();
670: @Apache::lonxml::ssi_info=();
671: $Apache::lonxml::post_evaluate=1;
672: $Apache::lonxml::warnings_error_header='';
673: $Apache::lonxml::substitute_LaTeX_symbols = 1;
674: if ($target eq 'meta') {
675: $Apache::lonxml::redirection = 0;
676: $Apache::lonxml::metamode = 1;
677: $Apache::lonxml::evaluate = 1;
678: $Apache::lonxml::import = 0;
679: } elsif ($target eq 'answer') {
680: $Apache::lonxml::redirection = 0;
681: $Apache::lonxml::metamode = 1;
682: $Apache::lonxml::evaluate = 1;
683: $Apache::lonxml::import = 1;
684: } elsif ($target eq 'grade') {
685: &startredirection(); #ended in inner_xmlparse on exit
686: $Apache::lonxml::metamode = 0;
687: $Apache::lonxml::evaluate = 1;
688: $Apache::lonxml::import = 1;
689: } elsif ($target eq 'modified') {
690: $Apache::lonxml::redirection = 0;
691: $Apache::lonxml::metamode = 0;
692: $Apache::lonxml::evaluate = 0;
693: $Apache::lonxml::import = 0;
694: } elsif ($target eq 'edit') {
695: $Apache::lonxml::redirection = 0;
696: $Apache::lonxml::metamode = 0;
697: $Apache::lonxml::evaluate = 0;
698: $Apache::lonxml::import = 0;
699: } elsif ($target eq 'analyze') {
700: $Apache::lonxml::redirection = 0;
701: $Apache::lonxml::metamode = 0;
702: $Apache::lonxml::evaluate = 1;
703: $Apache::lonxml::import = 1;
704: } else {
705: $Apache::lonxml::redirection = 0;
706: $Apache::lonxml::metamode = 0;
707: $Apache::lonxml::evaluate = 1;
708: $Apache::lonxml::import = 1;
709: }
710: }
711:
712: sub init_safespace {
713: my ($target,$safeeval,$safehole,$safeinit) = @_;
714: $safeeval->deny_only(':dangerous');
715: $safeeval->reval('use Math::Complex;');
716: $safeeval->permit_only(":default");
717: $safeeval->permit("entereval");
718: $safeeval->permit(":base_math");
719: $safeeval->permit("sort");
720: $safeeval->permit("time");
721: $safeeval->permit("caller");
722: $safeeval->deny("rand");
723: $safeeval->deny("srand");
724: $safeeval->deny(":base_io");
725: $safehole->wrap(\&Apache::scripttag::xmlparse,$safeeval,'&xmlparse');
726: $safehole->wrap(\&Apache::outputtags::multipart,$safeeval,'&multipart');
727: $safehole->wrap(\&Apache::lonnet::EXT,$safeeval,'&EXT');
728: $safehole->wrap(\&Apache::chemresponse::chem_standard_order,$safeeval,
729: '&chem_standard_order');
730: $safehole->wrap(\&Apache::response::check_status,$safeeval,'&check_status');
731: $safehole->wrap(\&Apache::response::implicit_multiplication,$safeeval,'&implicit_multiplication');
732:
733: $safehole->wrap(\&Apache::lonmaxima::maxima_eval,$safeeval,'&maxima_eval');
734: $safehole->wrap(\&Apache::lonmaxima::maxima_check,$safeeval,'&maxima_check');
735: $safehole->wrap(\&Apache::lonmaxima::maxima_cas_formula_fix,$safeeval,
736: '&maxima_cas_formula_fix');
737:
738: $safehole->wrap(\&Apache::caparesponse::capa_formula_fix,$safeeval,
739: '&capa_formula_fix');
740:
741: $safehole->wrap(\&Apache::lonlocal::locallocaltime,$safeeval,
742: '&locallocaltime');
743:
744: $safehole->wrap(\&Math::Cephes::asin,$safeeval,'&asin');
745: $safehole->wrap(\&Math::Cephes::acos,$safeeval,'&acos');
746: $safehole->wrap(\&Math::Cephes::atan,$safeeval,'&atan');
747: $safehole->wrap(\&Math::Cephes::sinh,$safeeval,'&sinh');
748: $safehole->wrap(\&Math::Cephes::cosh,$safeeval,'&cosh');
749: $safehole->wrap(\&Math::Cephes::tanh,$safeeval,'&tanh');
750: $safehole->wrap(\&Math::Cephes::asinh,$safeeval,'&asinh');
751: $safehole->wrap(\&Math::Cephes::acosh,$safeeval,'&acosh');
752: $safehole->wrap(\&Math::Cephes::atanh,$safeeval,'&atanh');
753: $safehole->wrap(\&Math::Cephes::erf,$safeeval,'&erf');
754: $safehole->wrap(\&Math::Cephes::erfc,$safeeval,'&erfc');
755: $safehole->wrap(\&Math::Cephes::j0,$safeeval,'&j0');
756: $safehole->wrap(\&Math::Cephes::j1,$safeeval,'&j1');
757: $safehole->wrap(\&Math::Cephes::jn,$safeeval,'&jn');
758: $safehole->wrap(\&Math::Cephes::jv,$safeeval,'&jv');
759: $safehole->wrap(\&Math::Cephes::y0,$safeeval,'&y0');
760: $safehole->wrap(\&Math::Cephes::y1,$safeeval,'&y1');
761: $safehole->wrap(\&Math::Cephes::yn,$safeeval,'&yn');
762: $safehole->wrap(\&Math::Cephes::yv,$safeeval,'&yv');
763:
764: $safehole->wrap(\&Math::Cephes::bdtr ,$safeeval,'&bdtr' );
765: $safehole->wrap(\&Math::Cephes::bdtrc ,$safeeval,'&bdtrc' );
766: $safehole->wrap(\&Math::Cephes::bdtri ,$safeeval,'&bdtri' );
767: $safehole->wrap(\&Math::Cephes::btdtr ,$safeeval,'&btdtr' );
768: $safehole->wrap(\&Math::Cephes::chdtr ,$safeeval,'&chdtr' );
769: $safehole->wrap(\&Math::Cephes::chdtrc,$safeeval,'&chdtrc');
770: $safehole->wrap(\&Math::Cephes::chdtri,$safeeval,'&chdtri');
771: $safehole->wrap(\&Math::Cephes::fdtr ,$safeeval,'&fdtr' );
772: $safehole->wrap(\&Math::Cephes::fdtrc ,$safeeval,'&fdtrc' );
773: $safehole->wrap(\&Math::Cephes::fdtri ,$safeeval,'&fdtri' );
774: $safehole->wrap(\&Math::Cephes::gdtr ,$safeeval,'&gdtr' );
775: $safehole->wrap(\&Math::Cephes::gdtrc ,$safeeval,'&gdtrc' );
776: $safehole->wrap(\&Math::Cephes::nbdtr ,$safeeval,'&nbdtr' );
777: $safehole->wrap(\&Math::Cephes::nbdtrc,$safeeval,'&nbdtrc');
778: $safehole->wrap(\&Math::Cephes::nbdtri,$safeeval,'&nbdtri');
779: $safehole->wrap(\&Math::Cephes::ndtr ,$safeeval,'&ndtr' );
780: $safehole->wrap(\&Math::Cephes::ndtri ,$safeeval,'&ndtri' );
781: $safehole->wrap(\&Math::Cephes::pdtr ,$safeeval,'&pdtr' );
782: $safehole->wrap(\&Math::Cephes::pdtrc ,$safeeval,'&pdtrc' );
783: $safehole->wrap(\&Math::Cephes::pdtri ,$safeeval,'&pdtri' );
784: $safehole->wrap(\&Math::Cephes::stdtr ,$safeeval,'&stdtr' );
785: $safehole->wrap(\&Math::Cephes::stdtri,$safeeval,'&stdtri');
786:
787: $safehole->wrap(\&Math::Cephes::Matrix::mat,$safeeval,'&mat');
788: $safehole->wrap(\&Math::Cephes::Matrix::new,$safeeval,
789: '&Math::Cephes::Matrix::new');
790: $safehole->wrap(\&Math::Cephes::Matrix::coef,$safeeval,
791: '&Math::Cephes::Matrix::coef');
792: $safehole->wrap(\&Math::Cephes::Matrix::clr,$safeeval,
793: '&Math::Cephes::Matrix::clr');
794: $safehole->wrap(\&Math::Cephes::Matrix::add,$safeeval,
795: '&Math::Cephes::Matrix::add');
796: $safehole->wrap(\&Math::Cephes::Matrix::sub,$safeeval,
797: '&Math::Cephes::Matrix::sub');
798: $safehole->wrap(\&Math::Cephes::Matrix::mul,$safeeval,
799: '&Math::Cephes::Matrix::mul');
800: $safehole->wrap(\&Math::Cephes::Matrix::div,$safeeval,
801: '&Math::Cephes::Matrix::div');
802: $safehole->wrap(\&Math::Cephes::Matrix::inv,$safeeval,
803: '&Math::Cephes::Matrix::inv');
804: $safehole->wrap(\&Math::Cephes::Matrix::transp,$safeeval,
805: '&Math::Cephes::Matrix::transp');
806: $safehole->wrap(\&Math::Cephes::Matrix::simq,$safeeval,
807: '&Math::Cephes::Matrix::simq');
808: $safehole->wrap(\&Math::Cephes::Matrix::mat_to_vec,$safeeval,
809: '&Math::Cephes::Matrix::mat_to_vec');
810: $safehole->wrap(\&Math::Cephes::Matrix::vec_to_mat,$safeeval,
811: '&Math::Cephes::Matrix::vec_to_mat');
812: $safehole->wrap(\&Math::Cephes::Matrix::check,$safeeval,
813: '&Math::Cephes::Matrix::check');
814: $safehole->wrap(\&Math::Cephes::Matrix::check,$safeeval,
815: '&Math::Cephes::Matrix::check');
816:
817: # $safehole->wrap(\&Math::Cephes::new_fract,$safeeval,'&new_fract');
818: # $safehole->wrap(\&Math::Cephes::radd,$safeeval,'&radd');
819: # $safehole->wrap(\&Math::Cephes::rsub,$safeeval,'&rsub');
820: # $safehole->wrap(\&Math::Cephes::rmul,$safeeval,'&rmul');
821: # $safehole->wrap(\&Math::Cephes::rdiv,$safeeval,'&rdiv');
822: # $safehole->wrap(\&Math::Cephes::euclid,$safeeval,'&euclid');
823:
824: $safehole->wrap(\&Math::Random::random_beta,$safeeval,'&math_random_beta');
825: $safehole->wrap(\&Math::Random::random_chi_square,$safeeval,'&math_random_chi_square');
826: $safehole->wrap(\&Math::Random::random_exponential,$safeeval,'&math_random_exponential');
827: $safehole->wrap(\&Math::Random::random_f,$safeeval,'&math_random_f');
828: $safehole->wrap(\&Math::Random::random_gamma,$safeeval,'&math_random_gamma');
829: $safehole->wrap(\&Math::Random::random_multivariate_normal,$safeeval,'&math_random_multivariate_normal');
830: $safehole->wrap(\&Math::Random::random_multinomial,$safeeval,'&math_random_multinomial');
831: $safehole->wrap(\&Math::Random::random_noncentral_chi_square,$safeeval,'&math_random_noncentral_chi_square');
832: $safehole->wrap(\&Math::Random::random_noncentral_f,$safeeval,'&math_random_noncentral_f');
833: $safehole->wrap(\&Math::Random::random_normal,$safeeval,'&math_random_normal');
834: $safehole->wrap(\&Math::Random::random_permutation,$safeeval,'&math_random_permutation');
835: $safehole->wrap(\&Math::Random::random_permuted_index,$safeeval,'&math_random_permuted_index');
836: $safehole->wrap(\&Math::Random::random_uniform,$safeeval,'&math_random_uniform');
837: $safehole->wrap(\&Math::Random::random_poisson,$safeeval,'&math_random_poisson');
838: $safehole->wrap(\&Math::Random::random_uniform_integer,$safeeval,'&math_random_uniform_integer');
839: $safehole->wrap(\&Math::Random::random_negative_binomial,$safeeval,'&math_random_negative_binomial');
840: $safehole->wrap(\&Math::Random::random_binomial,$safeeval,'&math_random_binomial');
841: $safehole->wrap(\&Math::Random::random_seed_from_phrase,$safeeval,'&random_seed_from_phrase');
842: $safehole->wrap(\&Math::Random::random_set_seed_from_phrase,$safeeval,'&random_set_seed_from_phrase');
843: $safehole->wrap(\&Math::Random::random_get_seed,$safeeval,'&random_get_seed');
844: $safehole->wrap(\&Math::Random::random_set_seed,$safeeval,'&random_set_seed');
845: $safehole->wrap(\&Apache::loncommon::languages,$safeeval,'&languages');
846: $safehole->wrap(\&Apache::lonxml::error,$safeeval,'&LONCAPA_INTERNAL_ERROR');
847: $safehole->wrap(\&Apache::lonxml::debug,$safeeval,'&LONCAPA_INTERNAL_DEBUG');
848: $safehole->wrap(\&Apache::lonnet::logthis,$safeeval,'&LONCAPA_INTERNAL_LOGTHIS');
849: $safehole->wrap(\&Apache::inputtags::finalizeawards,$safeeval,'&LONCAPA_INTERNAL_FINALIZEAWARDS');
850: $safehole->wrap(\&Apache::caparesponse::get_sigrange,$safeeval,'&LONCAPA_INTERNAL_get_sigrange');
851: # use Data::Dumper;
852: # $safehole->wrap(\&Data::Dumper::Dumper,$safeeval,'&LONCAPA_INTERNAL_Dumper');
853: #need to inspect this class of ops
854: # $safeeval->deny(":base_orig");
855: $safeeval->permit("require");
856: $safeinit .= ';$external::target="'.$target.'";';
857: &Apache::run::run($safeinit,$safeeval);
858: &initialize_rndseed($safeeval);
859: }
860:
861: sub clean_safespace {
862: my ($safeeval) = @_;
863: delete_package_recurse($safeeval->{Root});
864: }
865:
866: sub delete_package_recurse {
867: my ($package) = @_;
868: my @subp;
869: {
870: no strict 'refs';
871: while (my ($key,$val) = each(%{*{"$package\::"}})) {
872: if (!defined($val)) { next; }
873: local (*ENTRY) = $val;
874: if (defined *ENTRY{HASH} && $key =~ /::$/ &&
875: $key ne "main::" && $key ne "<none>::")
876: {
877: my ($p) = $package ne "main" ? "$package\::" : "";
878: ($p .= $key) =~ s/::$//;
879: push(@subp,$p);
880: }
881: }
882: }
883: foreach my $p (@subp) {
884: delete_package_recurse($p);
885: }
886: Symbol::delete_package($package);
887: }
888:
889: sub initialize_rndseed {
890: my ($safeeval)=@_;
891: my $rndseed;
892: my ($symb,$courseid,$domain,$name) = &Apache::lonnet::whichuser();
893: $rndseed=&Apache::lonnet::rndseed($symb,$courseid,$domain,$name);
894: my $safeinit = '$external::randomseed="'.$rndseed.'";';
895: &Apache::lonxml::debug("Setting rndseed to $rndseed");
896: &Apache::run::run($safeinit,$safeeval);
897: }
898:
899: sub default_homework_load {
900: my ($safeeval)=@_;
901: &Apache::lonxml::debug('Loading default_homework');
902: my $default=&Apache::lonnet::getfile('/home/httpd/html/res/adm/includes/default_homework.lcpm');
903: if ($default eq -1) {
904: &Apache::lonxml::error("<b>Unable to find <i>default_homework.lcpm</i></b>");
905: } else {
906: &Apache::run::run($default,$safeeval);
907: $Apache::lonxml::default_homework_loaded=1;
908: }
909: }
910:
911: {
912: my $alarm_depth;
913: sub init_alarm {
914: alarm(0);
915: $alarm_depth=0;
916: }
917:
918: sub start_alarm {
919: if ($alarm_depth<1) {
920: my $old=alarm($Apache::lonnet::perlvar{'lonScriptTimeout'});
921: if ($old) {
922: &Apache::lonxml::error("Cancelled an alarm of $old, this shouldn't occur.");
923: }
924: }
925: $alarm_depth++;
926: }
927:
928: sub end_alarm {
929: $alarm_depth--;
930: if ($alarm_depth<1) { alarm(0); }
931: }
932: }
933: my $metamode_was;
934: sub startredirection {
935: if (!$Apache::lonxml::redirection) {
936: $metamode_was=$Apache::lonxml::metamode;
937: }
938: $Apache::lonxml::metamode=0;
939: $Apache::lonxml::redirection++;
940: push (@Apache::lonxml::outputstack, '');
941: }
942:
943: sub endredirection {
944: if (!$Apache::lonxml::redirection) {
945: &Apache::lonxml::error("Endredirection was called before a startredirection, perhaps you have unbalanced tags. Some debugging information:".join ":",caller);
946: return '';
947: }
948: $Apache::lonxml::redirection--;
949: if (!$Apache::lonxml::redirection) {
950: $Apache::lonxml::metamode=$metamode_was;
951: }
952: pop @Apache::lonxml::outputstack;
953: }
954: sub in_redirection {
955: return ($Apache::lonxml::redirection > 0)
956: }
957:
958: sub end_tag {
959: my ($tagstack,$parstack,$token)=@_;
960: pop(@$tagstack);
961: pop(@$parstack);
962: &decreasedepth($token);
963: }
964:
965: sub initdepth {
966: @Apache::lonxml::depthcounter=();
967: undef($Apache::lonxml::last_depth_count);
968: }
969:
970:
971: my @timers;
972: my $lasttime;
973: # @Apache::lonxml::depthcounter -> count of tags that exist so
974: # far at each level
975: # $Apache::lonxml::last_depth_count -> when ascending, need to
976: # remember the count for the level below the current level (for
977: # example going from 1_2 -> 1 -> 1_3 need to remember the 2 )
978:
979: sub increasedepth {
980: my ($token) = @_;
981: push(@Apache::lonxml::depthcounter,$Apache::lonxml::last_depth_count+1);
982: undef($Apache::lonxml::last_depth_count);
983: my $time;
984: if ($Apache::lonxml::debug eq "1") {
985: push(@timers,[&gettimeofday()]);
986: $time=&tv_interval($lasttime);
987: $lasttime=[&gettimeofday()];
988: }
989: my $spacing=' 'x($#Apache::lonxml::depthcounter);
990: $Apache::lonxml::curdepth=join('_',@Apache::lonxml::depthcounter);
991: # &Apache::lonxml::debug("s$spacing$Apache::lonxml::depth : $Apache::lonxml::olddepth : $Apache::lonxml::curdepth : $token->[1] : $time");
992: #print "<br />s $Apache::lonxml::depth : $Apache::lonxml::olddepth : $curdepth : $token->[1]\n";
993: }
994:
995: sub decreasedepth {
996: my ($token) = @_;
997: if ( $#Apache::lonxml::depthcounter == -1) {
998: &Apache::lonxml::warning(&mt("Missing tags, unable to properly run file."));
999: }
1000: $Apache::lonxml::last_depth_count = pop(@Apache::lonxml::depthcounter);
1001:
1002: my ($timer,$time);
1003: if ($Apache::lonxml::debug eq "1") {
1004: $timer=pop(@timers);
1005: $time=&tv_interval($lasttime);
1006: $lasttime=[&gettimeofday()];
1007: }
1008: my $spacing=' 'x($#Apache::lonxml::depthcounter);
1009: $Apache::lonxml::curdepth = join('_',@Apache::lonxml::depthcounter);
1010: # &Apache::lonxml::debug("e$spacing$Apache::lonxml::depth : $Apache::lonxml::olddepth : $Apache::lonxml::curdepth : $token->[1] : $time : ".&tv_interval($timer));
1011: #print "<br />e $Apache::lonxml::depth : $Apache::lonxml::olddepth : $token->[1] : $curdepth\n";
1012: }
1013:
1014: sub get_id {
1015: my ($parstack,$safeeval)=@_;
1016: my $id= &Apache::lonxml::get_param('id',$parstack,$safeeval);
1017: if ($env{'request.state'} eq 'construct' && $id =~ /([._]|[^\w\d\s[:punct:]])/) {
1018: &error(&mt("ID "[_1]" contains invalid characters, IDs are only allowed to contain letters, numbers, spaces and -",'<tt>'.$id.'</tt>'));
1019: }
1020: if ($id =~ /^\s*$/) { $id = $Apache::lonxml::curdepth; }
1021: return $id;
1022: }
1023:
1024: sub get_all_text_unbalanced {
1025: #there is a copy of this in lonpublisher.pm
1026: my($tag,$pars)= @_;
1027: my $token;
1028: my $result='';
1029: $tag='<'.$tag.'>';
1030: while ($token = $$pars[-1]->get_token) {
1031: if (($token->[0] eq 'T')||($token->[0] eq 'C')||($token->[0] eq 'D')) {
1032: if ($token->[0] eq 'T' && $token->[2]) {
1033: $result.='<![CDATA['.$token->[1].']]>';
1034: } else {
1035: $result.=$token->[1];
1036: }
1037: } elsif ($token->[0] eq 'PI') {
1038: $result.=$token->[2];
1039: } elsif ($token->[0] eq 'S') {
1040: $result.=$token->[4];
1041: } elsif ($token->[0] eq 'E') {
1042: $result.=$token->[2];
1043: }
1044: if ($result =~ /\Q$tag\E/is) {
1045: ($result,my $redo)=$result =~ /(.*)\Q$tag\E(.*)/is;
1046: #&Apache::lonxml::debug('Got a winner with leftovers ::'.$2);
1047: #&Apache::lonxml::debug('Result is :'.$1);
1048: $redo=$tag.$redo;
1049: &Apache::lonxml::newparser($pars,\$redo);
1050: last;
1051: }
1052: }
1053: return $result
1054:
1055: }
1056:
1057: #########################################################################
1058: # #
1059: # bubble line counter management #
1060: # #
1061: #########################################################################
1062:
1063: =pod
1064:
1065: For bubble grading mode and exam bubble printing mode, the tracking of
1066: the current 'bubble line number' is stored in the %env element
1067: 'form.counter', and is modifed and handled by the following routines.
1068:
1069: The value of it is stored in $Apache:lonxml::counter when live and
1070: stored back to env after done.
1071:
1072: =item &increment_counter($increment);
1073:
1074: Increments the internal counter environment variable a specified amount
1075:
1076: Optional Arguments:
1077: $increment - amount to increment by (defaults to 1)
1078: Also 1 if the value is negative or zero.
1079: $part_response - A concatenation of the part and response id
1080: identifying exactly what is being 'answered'.
1081:
1082:
1083: =cut
1084:
1085: sub increment_counter {
1086: my ($increment, $part_response) = @_;
1087: if ($env{'form.grade_noincrement'}) { return; }
1088: if (!defined($increment) || $increment le 0) {
1089: $increment = 1;
1090: }
1091: $Apache::lonxml::counter += $increment;
1092:
1093: # If the caller supplied the response_id parameter,
1094: # Maintain its counter.. creating if necessary.
1095:
1096: if (defined($part_response)) {
1097: if (!defined($Apache::lonxml::counters_per_part{$part_response})) {
1098: $Apache::lonxml::counters_per_part{$part_response} = 0;
1099: }
1100: $Apache::lonxml::counters_per_part{$part_response} += $increment;
1101: my $new_value = $Apache::lonxml::counters_per_part{$part_response};
1102: }
1103:
1104: $Apache::lonxml::counter_changed=1;
1105: }
1106:
1107: =pod
1108:
1109: =item &init_counter($increment);
1110:
1111: Initialize the internal counter environment variable
1112:
1113: =cut
1114:
1115: sub init_counter {
1116: if ($env{'request.state'} eq 'construct') {
1117: $Apache::lonxml::counter=1;
1118: $Apache::lonxml::counter_changed=1;
1119: } elsif (defined($env{'form.counter'})) {
1120: $Apache::lonxml::counter=$env{'form.counter'};
1121: $Apache::lonxml::counter_changed=0;
1122: } else {
1123: $Apache::lonxml::counter=1;
1124: $Apache::lonxml::counter_changed=1;
1125: }
1126: }
1127:
1128: sub store_counter {
1129: &Apache::lonnet::appenv({'form.counter' => $Apache::lonxml::counter});
1130: $Apache::lonxml::counter_changed=0;
1131: return '';
1132: }
1133:
1134: {
1135: my $state;
1136: sub clear_problem_counter {
1137: undef($state);
1138: &Apache::lonnet::delenv('form.counter');
1139: &Apache::lonxml::init_counter();
1140: &Apache::lonxml::store_counter();
1141: }
1142:
1143: sub remember_problem_counter {
1144: &Apache::lonnet::transfer_profile_to_env(undef,undef,1);
1145: $state = $env{'form.counter'};
1146: }
1147:
1148: sub restore_problem_counter {
1149: if (defined($state)) {
1150: &Apache::lonnet::appenv({'form.counter' => $state});
1151: }
1152: }
1153: sub get_problem_counter {
1154: if ($Apache::lonxml::counter_changed) { &store_counter() }
1155: &Apache::lonnet::transfer_profile_to_env(undef,undef,1);
1156: return $env{'form.counter'};
1157: }
1158: }
1159:
1160: =pod
1161:
1162: =item bubble_lines_for_part(part_response)
1163:
1164: Returns the number of lines required to get a response for
1165: $part_response (this is just $Apache::lonxml::counters_per_part{$part_response}
1166:
1167: =cut
1168:
1169: sub bubble_lines_for_part {
1170: my ($part_response) = @_;
1171:
1172: if (!defined($Apache::lonxml::counters_per_part{$part_response})) {
1173: return 0;
1174: } else {
1175: return $Apache::lonxml::counters_per_part{$part_response};
1176: }
1177: }
1178:
1179: =pod
1180:
1181: =item clear_bubble_lines_for_part
1182:
1183: Clears the hash of bubble lines per part. If a caller
1184: needs to analyze several resources this should be called between
1185: resources to reset the hash for each problem being analyzed.
1186:
1187: =cut
1188:
1189: sub clear_bubble_lines_for_part {
1190: undef(%Apache::lonxml::counters_per_part);
1191: }
1192:
1193: =pod
1194:
1195: =item set_bubble_lines(part_response, value)
1196:
1197: If there is a problem part, that for whatever reason
1198: requires bubble lines that are not
1199: the same as the counter increment, it can call this sub during
1200: analysis to set its hash value explicitly.
1201:
1202: =cut
1203:
1204: sub set_bubble_lines {
1205: my ($part_response, $value) = @_;
1206:
1207: $Apache::lonxml::counters_per_part{$part_response} = $value;
1208: }
1209:
1210: =pod
1211:
1212: =item get_bubble_line_hash
1213:
1214: Returns the current bubble line hash. This is assumed to
1215: be small so we return a copy
1216:
1217:
1218: =cut
1219:
1220: sub get_bubble_line_hash {
1221: return %Apache::lonxml::counters_per_part;
1222: }
1223:
1224:
1225: #--------------------------------------------------
1226:
1227: sub get_all_text {
1228: my($tag,$pars,$style)= @_;
1229: my $gotfullstack=1;
1230: if (ref($pars) ne 'ARRAY') {
1231: $gotfullstack=0;
1232: $pars=[$pars];
1233: }
1234: if (ref($style) ne 'HASH') {
1235: $style={};
1236: }
1237: my $depth=0;
1238: my $token;
1239: my $result='';
1240: if ( $tag =~ m:^/: ) {
1241: my $tag=substr($tag,1);
1242: #&Apache::lonxml::debug("have:$tag:");
1243: my $top_empty=0;
1244: while (($depth >=0) && ($#$pars > -1) && (!$top_empty)) {
1245: while (($depth >=0) && ($token = $$pars[-1]->get_token)) {
1246: #&Apache::lonxml::debug("e token:$token->[0]:$depth:$token->[1]:".$#$pars.":".$#Apache::lonxml::pwd);
1247: if (($token->[0] eq 'T')||($token->[0] eq 'C')||($token->[0] eq 'D')) {
1248: if ($token->[2]) {
1249: $result.='<![CDATA['.$token->[1].']]>';
1250: } else {
1251: $result.=$token->[1];
1252: }
1253: } elsif ($token->[0] eq 'PI') {
1254: $result.=$token->[2];
1255: } elsif ($token->[0] eq 'S') {
1256: if ($token->[1] =~ /^\Q$tag\E$/i) { $depth++; }
1257: if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_ON$/) { $Apache::lonxml::usestyle=1; }
1258: if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_OFF$/) { $Apache::lonxml::usestyle=0; }
1259: $result.=$token->[4];
1260: } elsif ($token->[0] eq 'E') {
1261: if ( $token->[1] =~ /^\Q$tag\E$/i) { $depth--; }
1262: #skip sending back the last end tag
1263: if ($depth == 0 && exists($$style{'/'.$token->[1]}) && $Apache::lonxml::usestyle) {
1264: my $string=
1265: '<LONCAPA_INTERNAL_TURN_STYLE_OFF end="yes" />'.
1266: $$style{'/'.$token->[1]}.
1267: $token->[2].
1268: '<LONCAPA_INTERNAL_TURN_STYLE_ON />';
1269: &Apache::lonxml::newparser($pars,\$string);
1270: #&Apache::lonxml::debug("reParsing $string");
1271: next;
1272: }
1273: if ($depth > -1) {
1274: $result.=$token->[2];
1275: } else {
1276: $$pars[-1]->unget_token($token);
1277: }
1278: }
1279: }
1280: if (($depth >=0) && ($#$pars == 0) ) { $top_empty=1; }
1281: if (($depth >=0) && ($#$pars > 0) ) {
1282: pop(@$pars);
1283: pop(@Apache::lonxml::pwd);
1284: }
1285: }
1286: if ($top_empty && $depth >= 0) {
1287: #never found the end tag ran out of text, throw error send back blank
1288: &error('Never found end tag for <'.$tag.
1289: '> current string <pre>'.
1290: &HTML::Entities::encode($result,'<>&"').
1291: '</pre>');
1292: if ($gotfullstack) {
1293: my $newstring='</'.$tag.'>'.$result;
1294: &Apache::lonxml::newparser($pars,\$newstring);
1295: }
1296: $result='';
1297: }
1298: } else {
1299: while ($#$pars > -1) {
1300: while ($token = $$pars[-1]->get_token) {
1301: #&Apache::lonxml::debug("s token:$token->[0]:$depth:$token->[1]");
1302: if (($token->[0] eq 'T')||($token->[0] eq 'C')||
1303: ($token->[0] eq 'D')) {
1304: if ($token->[2]) {
1305: $result.='<![CDATA['.$token->[1].']]>';
1306: } else {
1307: $result.=$token->[1];
1308: }
1309: } elsif ($token->[0] eq 'PI') {
1310: $result.=$token->[2];
1311: } elsif ($token->[0] eq 'S') {
1312: if ( $token->[1] =~ /^\Q$tag\E$/i) {
1313: $$pars[-1]->unget_token($token); last;
1314: } else {
1315: $result.=$token->[4];
1316: }
1317: if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_ON$/) { $Apache::lonxml::usestyle=1; }
1318: if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_OFF$/) { $Apache::lonxml::usestyle=0; }
1319: } elsif ($token->[0] eq 'E') {
1320: $result.=$token->[2];
1321: }
1322: }
1323: if (($#$pars > 0) ) {
1324: pop(@$pars);
1325: pop(@Apache::lonxml::pwd);
1326: } else { last; }
1327: }
1328: }
1329: #&Apache::lonxml::debug("Exit:$result:");
1330: return $result
1331: }
1332:
1333: sub newparser {
1334: my ($parser,$contentref,$dir) = @_;
1335: push (@$parser,HTML::LCParser->new($contentref));
1336: $$parser[-1]->xml_mode(1);
1337: $$parser[-1]->marked_sections(1);
1338: if ( $dir eq '' ) {
1339: push (@Apache::lonxml::pwd, $Apache::lonxml::pwd[$#Apache::lonxml::pwd]);
1340: } else {
1341: push (@Apache::lonxml::pwd, $dir);
1342: }
1343: }
1344:
1345: sub parstring {
1346: my ($token) = @_;
1347: my (@vars,@values);
1348: foreach my $attr (@{$token->[3]}) {
1349: if ($attr!~/\W/) {
1350: my $val=$token->[2]->{$attr};
1351: $val =~ s/([\%\@\\\"\'])/\\$1/g;
1352: $val =~ s/(\$[^\{a-zA-Z_])/\\$1/g;
1353: $val =~ s/(\$)$/\\$1/;
1354: #if ($val =~ m/^[\%\@]/) { $val="\\".$val; }
1355: push(@vars,"\$$attr");
1356: push(@values,"\"$val\"");
1357: }
1358: }
1359: my $var_init =
1360: (@vars) ? 'my ('.join(',',@vars).') = ('.join(',',@values).');'
1361: : '';
1362: return $var_init;
1363: }
1364:
1365: sub extlink {
1366: my ($res,$exact)=@_;
1367: if (!$exact) {
1368: $res=&Apache::lonnet::hreflocation($Apache::lonxml::pwd[-1],$res);
1369: }
1370: push(@Apache::lonxml::extlinks,$res)
1371: }
1372:
1373: sub writeallows {
1374: unless ($#extlinks>=0) { return; }
1375: my $thisurl = &Apache::lonnet::clutter(shift);
1376: if ($env{'httpref.'.$thisurl}) {
1377: $thisurl=$env{'httpref.'.$thisurl};
1378: }
1379: my $thisdir=$thisurl;
1380: $thisdir=~s/\/[^\/]+$//;
1381: my %httpref=();
1382: foreach (@extlinks) {
1383: $httpref{'httpref.'.
1384: &Apache::lonnet::hreflocation($thisdir,&unescape($_))}=$thisurl;
1385: }
1386: @extlinks=();
1387: &Apache::lonnet::appenv(\%httpref);
1388: }
1389:
1390: sub register_ssi {
1391: my ($url,%form)=@_;
1392: push (@Apache::lonxml::ssi_info,{'url'=>$url,'form'=>\%form});
1393: return '';
1394: }
1395:
1396: sub do_registered_ssi {
1397: foreach my $info (@Apache::lonxml::ssi_info) {
1398: my %form=%{ $info->{'form'}};
1399: my $url=$info->{'url'};
1400: &Apache::lonnet::ssi($url,%form);
1401: }
1402: }
1403:
1404: sub add_script_result {
1405: my ($display) = @_;
1406: push(@script_var_displays, $display);
1407: }
1408:
1409: #
1410: # Afterburner handles anchors, highlights and links
1411: #
1412: sub afterburn {
1413: my $result=shift;
1414: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
1415: ['highlight','anchor','link']);
1416: if ($env{'form.highlight'}) {
1417: foreach (split(/\,/,$env{'form.highlight'})) {
1418: my $anchorname=$_;
1419: my $matchthis=$anchorname;
1420: $matchthis=~s/\_+/\\s\+/g;
1421: $result=~s/(\Q$matchthis\E)/\<font color=\"red\"\>$1\<\/font\>/gs;
1422: }
1423: }
1424: if ($env{'form.link'}) {
1425: foreach (split(/\,/,$env{'form.link'})) {
1426: my ($anchorname,$linkurl)=split(/\>/,$_);
1427: my $matchthis=$anchorname;
1428: $matchthis=~s/\_+/\\s\+/g;
1429: $result=~s/(\Q$matchthis\E)/\<a href=\"$linkurl\"\>$1\<\/a\>/gs;
1430: }
1431: }
1432: if ($env{'form.anchor'}) {
1433: my $anchorname=$env{'form.anchor'};
1434: my $matchthis=$anchorname;
1435: $matchthis=~s/\_+/\\s\+/g;
1436: $result=~s/(\Q$matchthis\E)/\<a name=\"$anchorname\"\>$1\<\/a\>/s;
1437: $result.=(<<"ENDSCRIPT");
1438: <script type="text/javascript">
1439: document.location.hash='$anchorname';
1440: </script>
1441: ENDSCRIPT
1442: }
1443: return $result;
1444: }
1445:
1446: sub storefile {
1447: my ($file,$contents)=@_;
1448: &Apache::lonnet::correct_line_ends(\$contents);
1449: if (my $fh=Apache::File->new('>'.$file)) {
1450: print $fh $contents;
1451: $fh->close();
1452: return 1;
1453: } else {
1454: &warning("Unable to save file $file");
1455: return 0;
1456: }
1457: }
1458:
1459: sub createnewhtml {
1460: my $title=&mt('Title of document goes here');
1461: my $body=&mt('Body of document goes here');
1462: my $filecontents=(<<SIMPLECONTENT);
1463: <html>
1464: <head>
1465: <title>$title</title>
1466: </head>
1467: <body bgcolor="#FFFFFF">
1468: $body
1469: </body>
1470: </html>
1471: SIMPLECONTENT
1472: return $filecontents;
1473: }
1474:
1475: sub createnewsty {
1476: my $filecontents=(<<SIMPLECONTENT);
1477: <definetag name="">
1478: <render>
1479: <web></web>
1480: <tex></tex>
1481: </render>
1482: </definetag>
1483: SIMPLECONTENT
1484: return $filecontents;
1485: }
1486:
1487: sub verify_html {
1488: my ($filecontents)=@_;
1489: if ($filecontents!~/(?:\<|\<\;)(?:html|xml)[^\<]*(?:\>|\>\;)/is) {
1490: return &mt('File does not have [_1] or [_2] starting tag','<html>','<xml>');
1491: }
1492: if ($filecontents!~/(?:\<|\<\;)\/(?:html|xml)(?:\>|\>\;)/is) {
1493: return &mt('File does not have [_1] or [_2] ending tag','<html>','<xml>');
1494: }
1495: if ($filecontents!~/(?:\<|\<\;)(?:body|frameset)[^\<]*(?:\>|\>\;)/is) {
1496: return &mt('File does not have [_1] or [_2] starting tag','<body>','<frameset>');
1497: }
1498: if ($filecontents!~/(?:\<|\<\;)\/(?:body|frameset)[^\<]*(?:\>|\>\;)/is) {
1499: return &mt('File does not have [_1] or [_2] ending tag','<body>','<frameset>');
1500: }
1501: return '';
1502: }
1503:
1504: sub renderingoptions {
1505: my %langchoices=('' => '');
1506: foreach (&Apache::loncommon::languageids()) {
1507: if (&Apache::loncommon::supportedlanguagecode($_)) {
1508: $langchoices{&Apache::loncommon::supportedlanguagecode($_)}
1509: = &Apache::loncommon::plainlanguagedescription($_);
1510: }
1511: }
1512: return
1513: '<span class="LC_nobreak">'.
1514: &mt('Language:').' '.
1515: &Apache::loncommon::select_form($env{'form.languages'},'languages',
1516: %langchoices).'
1517: </span>
1518: <span class="LC_nobreak">'.
1519: &mt('Math Rendering:').' '.
1520: &Apache::loncommon::select_form($env{'form.texengine'},'texengine',
1521: ('' => '',
1522: 'tth' => 'tth (Tex-to-HTML)',
1523: 'jsMath' => 'jsMath',
1524: 'mimetex' => 'mimetex (Convert to Images)')).'
1525: </span>';
1526: }
1527:
1528: sub inserteditinfo {
1529: my ($filecontents, $filetype, $filename)=@_;
1530: $filecontents = &HTML::Entities::encode($filecontents,'<>&"');
1531: my $xml_help = '';
1532: my $initialize='';
1533: my $textarea_id = 'filecont';
1534: my ($add_to_onload, $add_to_onresize);
1535: $initialize=&Apache::lonhtmlcommon::spellheader();
1536: if ($filetype eq 'html'
1537: && (!&Apache::lonhtmlcommon::htmlareablocked() &&
1538: &Apache::lonhtmlcommon::htmlareabrowser())) {
1539: $textarea_id .= '___Frame';
1540: my $lang = &Apache::lonhtmlcommon::htmlarea_lang();
1541: $initialize.=(<<FULLPAGE);
1542: <script type="text/javascript">
1543: lonca
1544: function initDocument() {
1545: var oFCKeditor = new FCKeditor('filecont');
1546: oFCKeditor.Config['CustomConfigurationsPath'] = '/fckeditor/loncapaconfig.js' ;
1547: oFCKeditor.Config['FullPage'] = true
1548: oFCKeditor.Config['AutoDetectLanguage'] = false;
1549: oFCKeditor.Config['DefaultLanguage'] = "$lang";
1550: oFCKeditor.ReplaceTextarea();
1551: }
1552: function check_if_dirty(editor) {
1553: if (editor.IsDirty()) {
1554: unClean();
1555: }
1556: }
1557: function FCKeditor_OnComplete(editor) {
1558: editor.Events.AttachEvent("OnSelectionChange",check_if_dirty);
1559: resize_textarea('$textarea_id','LC_aftertextarea');
1560: }
1561: </script>
1562: FULLPAGE
1563: } else {
1564: $initialize.=(<<FULLPAGE);
1565: <script type="text/javascript">
1566: function initDocument() {
1567: resize_textarea('$textarea_id','LC_aftertextarea');
1568: }
1569: </script>
1570: FULLPAGE
1571: }
1572:
1573: $add_to_onload = 'initDocument();';
1574: $add_to_onresize = "resize_textarea('$textarea_id','LC_aftertextarea');";
1575:
1576: if ($filetype eq 'html') {
1577: $xml_help=&Apache::loncommon::helpLatexCheatsheet();
1578: }
1579:
1580: my $titledisplay=&display_title();
1581: my %lt=&Apache::lonlocal::texthash('st' => 'Save and Edit',
1582: 'vi' => 'Save and View',
1583: 'dv' => 'Discard Edits and View',
1584: 'un' => 'undo',
1585: 'ed' => 'Edit');
1586: my $spelllink .=&Apache::lonhtmlcommon::spelllink('xmledit','filecont');
1587: my $textarea_events = &Apache::edit::element_change_detection();
1588: my $form_events = &Apache::edit::form_change_detection();
1589: my $htmlerror=&verify_html($filecontents);
1590: if ($htmlerror) {
1591: $htmlerror='<span class="LC_error">'.$htmlerror.'</span>';
1592: }
1593: my $editfooter=(<<ENDFOOTER);
1594: $initialize
1595: <a name="editsection" />
1596: <form $form_events method="post" name="xmledit">
1597: <div class="LC_edit_problem_editxml_header">
1598: <table class="LC_edit_problem_header_title"><tr><td>
1599: $filename
1600: </td><td align="right">
1601: $xml_help
1602: </td></tr>
1603: </table>
1604: <div class="LC_edit_problem_discards">
1605: <input type="submit" name="discardview" accesskey="d" value="$lt{'dv'}" />
1606: <input type="submit" name="Undo" accesskey="u" value="$lt{'un'}" />
1607: $spelllink $htmlerror
1608: </div>
1609: <div class="LC_edit_problem_saves">
1610: <input type="submit" name="savethisfile" accesskey="s" value="$lt{'st'}" />
1611: <input type="submit" name="viewmode" accesskey="v" value="$lt{'vi'}" />
1612: </div>
1613: </div>
1614: <textarea $textarea_events style="width:100%" cols="80" rows="44" name="filecont" id="filecont">$filecontents</textarea>
1615: <div id="LC_aftertextarea">
1616: <br />
1617: $titledisplay
1618: </div>
1619: </form>
1620: </body>
1621: ENDFOOTER
1622: return ($editfooter,$add_to_onload,$add_to_onresize);;
1623: }
1624:
1625: sub get_target {
1626: my $viewgrades=&Apache::lonnet::allowed('vgr',$env{'request.course.id'});
1627: if ( $env{'request.state'} eq 'published') {
1628: if ( defined($env{'form.grade_target'})
1629: && ($viewgrades == 'F' )) {
1630: return ($env{'form.grade_target'});
1631: } elsif (defined($env{'form.grade_target'})) {
1632: if (($env{'form.grade_target'} eq 'web') ||
1633: ($env{'form.grade_target'} eq 'tex') ) {
1634: return $env{'form.grade_target'}
1635: } else {
1636: return 'web';
1637: }
1638: } else {
1639: return 'web';
1640: }
1641: } elsif ($env{'request.state'} eq 'construct') {
1642: if ( defined($env{'form.grade_target'})) {
1643: return ($env{'form.grade_target'});
1644: } else {
1645: return 'web';
1646: }
1647: } else {
1648: return 'web';
1649: }
1650: }
1651:
1652: sub handler {
1653: my $request=shift;
1654:
1655: my $target=&get_target();
1656:
1657: $Apache::lonxml::debug=$env{'user.debug'};
1658:
1659: &Apache::loncommon::content_type($request,'text/html');
1660: &Apache::loncommon::no_cache($request);
1661: if ($env{'request.state'} eq 'published') {
1662: $request->set_last_modified(&Apache::lonnet::metadata($request->uri,
1663: 'lastrevisiondate'));
1664: }
1665: $request->send_http_header;
1666:
1667: return OK if $request->header_only;
1668:
1669:
1670: my $file=&Apache::lonnet::filelocation("",$request->uri);
1671: my $filetype;
1672: if ($file =~ /\.sty$/) {
1673: $filetype='sty';
1674: } else {
1675: $filetype='html';
1676: }
1677: #
1678: # Edit action? Save file.
1679: #
1680: if (!($env{'request.state'} eq 'published')) {
1681: if ($env{'form.savethisfile'} || $env{'form.viewmode'} || $env{'form.Undo'}) {
1682: my $html_file=&Apache::lonnet::getfile($file);
1683: my $error = &Apache::lonhomework::handle_save_or_undo($request, \$html_file, \$env{'form.filecont'});
1684: if ($env{'form.savethisfile'}) {
1685: $env{'form.editmode'}='Edit'; #force edit mode
1686: }
1687: }
1688: }
1689: my %mystyle;
1690: my $result = '';
1691: my $filecontents=&Apache::lonnet::getfile($file);
1692: if ($filecontents eq -1) {
1693: my $start_page=&Apache::loncommon::start_page('File Error');
1694: my $end_page=&Apache::loncommon::end_page();
1695: my $fnf=&mt('File not found');
1696: $result=(<<ENDNOTFOUND);
1697: $start_page
1698: <b>$fnf: $file</b>
1699: $end_page
1700: ENDNOTFOUND
1701: $filecontents='';
1702: if ($env{'request.state'} ne 'published') {
1703: if ($filetype eq 'sty') {
1704: $filecontents=&createnewsty();
1705: } else {
1706: $filecontents=&createnewhtml();
1707: }
1708: $env{'form.editmode'}='Edit'; #force edit mode
1709: }
1710: } else {
1711: unless ($env{'request.state'} eq 'published') {
1712: if ($filecontents=~/BEGIN LON-CAPA Internal/) {
1713: &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.'));
1714: }
1715: #
1716: # we are in construction space, see if edit mode forced
1717: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
1718: ['editmode']);
1719: }
1720: if (!$env{'form.editmode'} || $env{'form.viewmode'} || $env{'form.discardview'}) {
1721: &Apache::structuretags::reset_problem_globals();
1722: $result = &Apache::lonxml::xmlparse($request,$target,$filecontents,
1723: '',%mystyle);
1724: # .html files may contain <problem> or <Task> need to clean
1725: # up if it did
1726: &Apache::structuretags::reset_problem_globals();
1727: &Apache::lonhomework::finished_parsing();
1728: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
1729: ['rawmode']);
1730: if ($env{'form.rawmode'}) { $result = $filecontents; }
1731: if ($filetype eq 'sty') {
1732: my $controls =
1733: ($env{'request.state'} eq 'construct') ? &Apache::londefdef::edit_controls()
1734: : '';
1735: my %options = ('bgcolor' => '#FFFFFF');
1736: $result =
1737: &Apache::loncommon::start_page(undef,undef,\%options).
1738: $controls.
1739: $result.
1740: &Apache::loncommon::end_page();
1741: }
1742: }
1743: }
1744:
1745: #
1746: # Edit action? Insert editing commands
1747: #
1748: unless ($env{'request.state'} eq 'published') {
1749: if ($env{'form.editmode'} && (!($env{'form.viewmode'})) && (!($env{'form.discardview'})))
1750: {
1751: my $displayfile=$request->uri;
1752: $displayfile=~s/^\/[^\/]*//;
1753:
1754: my ($edit_info, $add_to_onload, $add_to_onresize)=
1755: &inserteditinfo($filecontents,$filetype,$displayfile);
1756:
1757: my %options =
1758: ('add_entries' =>
1759: {'onresize' => $add_to_onresize,
1760: 'onload' => $add_to_onload, });
1761:
1762: if ($env{'environment.remote'} ne 'off') {
1763: $options{'bgcolor'} = '#FFFFFF';
1764: $options{'only_body'} = 1;
1765: }
1766: my $js =
1767: &Apache::edit::js_change_detection().
1768: &Apache::loncommon::resize_textarea_js();
1769: my $start_page = &Apache::loncommon::start_page(undef,$js,
1770: \%options);
1771: $result=$start_page.
1772: &Apache::lonxml::message_location().
1773: $edit_info.
1774: &Apache::loncommon::end_page();
1775: }
1776: }
1777: if ($filetype eq 'html') { &writeallows($request->uri); }
1778:
1779: &Apache::lonxml::add_messages(\$result);
1780: $request->print($result);
1781:
1782: return OK;
1783: }
1784:
1785: sub display_title {
1786: my $result;
1787: if ($env{'request.state'} eq 'construct') {
1788: my $title=&Apache::lonnet::gettitle();
1789: if (!defined($title) || $title eq '') {
1790: $title = $env{'request.filename'};
1791: $title = substr($title, rindex($title, '/') + 1);
1792: }
1793: $result = "<script type='text/javascript'>top.document.title = '$title - LON-CAPA "
1794: .&mt('Construction Space')."';</script>";
1795: }
1796: return $result;
1797: }
1798:
1799: sub debug {
1800: if ($Apache::lonxml::debug eq "1") {
1801: $|=1;
1802: my $request=$Apache::lonxml::request;
1803: if (!$request) {
1804: eval { $request=Apache->request; };
1805: }
1806: if (!$request) {
1807: eval { $request=Apache2::RequestUtil->request; };
1808: }
1809: $request->print('<font size="-2"><pre>DEBUG:'.&HTML::Entities::encode($_[0],'<>&"')."</pre></font>\n");
1810: #&Apache::lonnet::logthis($_[0]);
1811: }
1812: }
1813:
1814: sub show_error_warn_msg {
1815: if ($env{'request.filename'} eq '/home/httpd/html/res/lib/templates/simpleproblem.problem' &&
1816: &Apache::lonnet::allowed('mdc',$env{'request.course.id'})) {
1817: return 1;
1818: }
1819: return (($Apache::lonxml::debug eq 1) ||
1820: ($env{'request.state'} eq 'construct') ||
1821: ($Apache::lonhomework::browse eq 'F'
1822: &&
1823: $env{'form.show_errors'} eq 'on'));
1824: }
1825:
1826: sub error {
1827: my @errors = @_;
1828:
1829: $errorcount++;
1830:
1831: if (defined($Apache::inputtags::part)) {
1832: if ( @Apache::inputtags::response ) {
1833: push(@errors,
1834: &mt("This error occurred while processing response [_1] in part [_2]",
1835: $Apache::inputtags::response[-1],
1836: $Apache::inputtags::part));
1837: } else {
1838: push(@errors,
1839: &mt("This error occurred while processing part [_1]",
1840: $Apache::inputtags::part));
1841: }
1842: }
1843:
1844: if ( &show_error_warn_msg() ) {
1845: # If printing in construction space, put the error inside <pre></pre>
1846: push(@Apache::lonxml::error_messages,
1847: $Apache::lonxml::warnings_error_header.
1848: "<b>".&mt('ERROR:')."</b>".join("<br />\n",@errors)."<br />\n");
1849: $Apache::lonxml::warnings_error_header='';
1850: } else {
1851: my $errormsg;
1852: my ($symb)=&Apache::lonnet::symbread();
1853: if ( !$symb ) {
1854: #public or browsers
1855: $errormsg=&mt("An error occured while processing this resource. The author has been notified.");
1856: }
1857: my $host=$Apache::lonnet::perlvar{'lonHostID'};
1858: push(@errors,
1859: &mt("The error occurred on host [_1]",
1860: "<tt>$host</tt>"));
1861:
1862: my $msg = join('<br />', @errors);
1863:
1864: #notify author
1865: &Apache::lonmsg::author_res_msg($env{'request.filename'},$msg);
1866: #notify course
1867: if ( $symb && $env{'request.course.id'} ) {
1868: my $cnum=$env{'course.'.$env{'request.course.id'}.'.num'};
1869: my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
1870: my (undef,%users)=&Apache::lonmsg::decide_receiver(undef,0,1,1,1);
1871: my $declutter=&Apache::lonnet::declutter($env{'request.filename'});
1872: my $baseurl = &Apache::lonnet::clutter($declutter);
1873: my @userlist;
1874: foreach (keys %users) {
1875: my ($user,$domain) = split(/:/, $_);
1876: push(@userlist,"$user\@$domain");
1877: my $key=$declutter.'_'.$user.'_'.$domain;
1878: my %lastnotified=&Apache::lonnet::get('nohist_xmlerrornotifications',
1879: [$key],
1880: $cdom,$cnum);
1881: my $now=time;
1882: if ($now-$lastnotified{$key}>86400) {
1883: my $title = &Apache::lonnet::gettitle($symb);
1884: my $sentmessage;
1885: &Apache::lonmsg::user_normal_msg($user,$domain,
1886: "Error [$title]",$msg,'',$baseurl,'','',
1887: \$sentmessage,$symb,$title,1);
1888: &Apache::lonnet::put('nohist_xmlerrornotifications',
1889: {$key => $now},
1890: $cdom,$cnum);
1891: }
1892: }
1893: if ($env{'request.role.adv'}) {
1894: $errormsg=&mt("An error occured while processing this resource. The course personnel ([_1]) and the author have been notified.",join(', ',@userlist));
1895: } else {
1896: $errormsg=&mt("An error occured while processing this resource. The instructor has been notified.");
1897: }
1898: }
1899: push(@Apache::lonxml::error_messages,"<b>$errormsg</b> <br />");
1900: }
1901: }
1902:
1903: sub warning {
1904: $warningcount++;
1905:
1906: if ($env{'form.grade_target'} ne 'tex') {
1907: if ( &show_error_warn_msg() ) {
1908: push(@Apache::lonxml::warning_messages,
1909: $Apache::lonxml::warnings_error_header.
1910: "<b>W</b>ARNING<b>:</b>".join('<br />',@_)."<br />\n");
1911: $Apache::lonxml::warnings_error_header='';
1912: }
1913: }
1914: }
1915:
1916: sub info {
1917: if ($env{'form.grade_target'} ne 'tex'
1918: && $env{'request.state'} eq 'construct') {
1919: push(@Apache::lonxml::info_messages,join('<br />',@_)."<br />\n");
1920: }
1921: }
1922:
1923: sub message_location {
1924: return '__LONCAPA_INTERNAL_MESSAGE_LOCATION__';
1925: }
1926:
1927: sub add_messages {
1928: my ($msg)=@_;
1929: my $result=join(' ',
1930: @Apache::lonxml::info_messages,
1931: @Apache::lonxml::error_messages,
1932: @Apache::lonxml::warning_messages);
1933: undef(@Apache::lonxml::info_messages);
1934: undef(@Apache::lonxml::error_messages);
1935: undef(@Apache::lonxml::warning_messages);
1936: $$msg=~s/__LONCAPA_INTERNAL_MESSAGE_LOCATION__/$result/;
1937: $$msg=~s/__LONCAPA_INTERNAL_MESSAGE_LOCATION__//g;
1938: }
1939:
1940: sub get_param {
1941: my ($param,$parstack,$safeeval,$context,$case_insensitive) = @_;
1942: if ( ! $context ) { $context = -1; }
1943: my $args ='';
1944: if ( $#$parstack > (-2-$context) ) { $args=$$parstack[$context]; }
1945: if ( ! $Apache::lonxml::usestyle ) {
1946: $args=$Apache::lonxml::style_values.$args;
1947: }
1948: if ( ! $args ) { return undef; }
1949: if ( $case_insensitive ) {
1950: if ($args =~ s/(my (?:.*))(\$\Q$param\E[,\)])/$1.lc($2)/ei) {
1951: return &Apache::run::run("{$args;".'return $'.$param.'}',
1952: $safeeval); #'
1953: } else {
1954: return undef;
1955: }
1956: } else {
1957: if ( $args =~ /my .*\$\Q$param\E[,\)]/ ) {
1958: return &Apache::run::run("{$args;".'return $'.$param.'}',
1959: $safeeval); #'
1960: } else {
1961: return undef;
1962: }
1963: }
1964: }
1965:
1966: sub get_param_var {
1967: my ($param,$parstack,$safeeval,$context,$case_insensitive) = @_;
1968: if ( ! $context ) { $context = -1; }
1969: my $args ='';
1970: if ( $#$parstack > (-2-$context) ) { $args=$$parstack[$context]; }
1971: if ( ! $Apache::lonxml::usestyle ) {
1972: $args=$Apache::lonxml::style_values.$args;
1973: }
1974: &Apache::lonxml::debug("Args are $args param is $param");
1975: if ($case_insensitive) {
1976: if (! ($args=~s/(my (?:.*))(\$\Q$param\E[,\)])/$1.lc($2)/ei)) {
1977: return undef;
1978: }
1979: } elsif ( $args !~ /my .*\$\Q$param\E[,\)]/ ) { return undef; }
1980: my $value=&Apache::run::run("{$args;".'return $'.$param.'}',$safeeval); #'
1981: &Apache::lonxml::debug("first run is $value");
1982: if ($value =~ /^[\$\@\%][a-zA-Z_]\w*$/) {
1983: &Apache::lonxml::debug("doing second");
1984: my @result=&Apache::run::run("return $value",$safeeval,1);
1985: if (!defined($result[0])) {
1986: return $value
1987: } else {
1988: if (wantarray) { return @result; } else { return $result[0]; }
1989: }
1990: } else {
1991: return $value;
1992: }
1993: }
1994:
1995: sub register_insert_xml {
1996: my $parser = HTML::LCParser->new($Apache::lonnet::perlvar{'lonTabDir'}
1997: .'/insertlist.xml');
1998: my ($tagnum,$in_help)=(0,0);
1999: my @alltags;
2000: my $tag;
2001: while (my $token = $parser->get_token()) {
2002: if ($token->[0] eq 'S') {
2003: my $key;
2004: if ($token->[1] eq 'tag') {
2005: $tag = $token->[2]{'name'};
2006: $insertlist{"$tagnum.tag"} = $tag;
2007: $insertlist{"$tag.num"} = $tagnum;
2008: push(@alltags,$tag);
2009: } elsif ($in_help && $token->[1] eq 'file') {
2010: $key = $tag.'.helpfile';
2011: } elsif ($in_help && $token->[1] eq 'description') {
2012: $key = $tag.'.helpdesc';
2013: } elsif ($token->[1] eq 'description' ||
2014: $token->[1] eq 'color' ||
2015: $token->[1] eq 'show' ) {
2016: $key = $tag.'.'.$token->[1];
2017: } elsif ($token->[1] eq 'insert_sub') {
2018: $key = $tag.'.function';
2019: } elsif ($token->[1] eq 'help') {
2020: $in_help=1;
2021: } elsif ($token->[1] eq 'allow') {
2022: $key = $tag.'.allow';
2023: }
2024: if (defined($key)) {
2025: $insertlist{$key} = $parser->get_text();
2026: $insertlist{$key} =~ s/(^\s*|\s*$ )//gx;
2027: }
2028: } elsif ($token->[0] eq 'E') {
2029: if ($token->[1] eq 'tag') {
2030: undef($tag);
2031: $tagnum++;
2032: } elsif ($token->[1] eq 'help') {
2033: undef($in_help);
2034: }
2035: }
2036: }
2037:
2038: # parse the allows and ignore tags set to <show>no</show>
2039: foreach my $tag (@alltags) {
2040: next if (!exists($insertlist{"$tag.allow"}));
2041: my $allow = $insertlist{"$tag.allow"};
2042: foreach my $element (split(',',$allow)) {
2043: $element =~ s/(^\s*|\s*$ )//gx;
2044: if (!exists($insertlist{"$element.show"})
2045: || $insertlist{"$element.show"} ne 'no') {
2046: push(@{ $insertlist{$tag.'.which'} },$element);
2047: }
2048: }
2049: }
2050: }
2051:
2052: sub register_insert {
2053: return ®ister_insert_xml(@_);
2054: # &dump_insertlist('2');
2055: }
2056:
2057: sub dump_insertlist {
2058: my ($ext) = @_;
2059: open(XML,">/tmp/insertlist.xml.$ext");
2060: print XML ("<insertlist>");
2061: my $i=0;
2062:
2063: while (exists($insertlist{"$i.tag"})) {
2064: my $tag = $insertlist{"$i.tag"};
2065: print XML ("
2066: \t<tag name=\"$tag\">");
2067: if (defined($insertlist{"$tag.description"})) {
2068: print XML ("
2069: \t\t<description>".$insertlist{"$tag.description"}."</description>");
2070: }
2071: if (defined($insertlist{"$tag.color"})) {
2072: print XML ("
2073: \t\t<color>".$insertlist{"$tag.color"}."</color>");
2074: }
2075: if (defined($insertlist{"$tag.function"})) {
2076: print XML ("
2077: \t\t<insert_sub>".$insertlist{"$tag.function"}."</insert_sub>");
2078: }
2079: if (defined($insertlist{"$tag.show"})
2080: && $insertlist{"$tag.show"} ne 'yes') {
2081: print XML ("
2082: \t\t<show>".$insertlist{"$tag.show"}."</show>");
2083: }
2084: if (defined($insertlist{"$tag.helpfile"})) {
2085: print XML ("
2086: \t\t<help>
2087: \t\t\t<file>".$insertlist{"$tag.helpfile"}."</file>");
2088: if ($insertlist{"$tag.helpdesc"} ne '') {
2089: print XML ("
2090: \t\t\t<description>".$insertlist{"$tag.helpdesc"}."</description>");
2091: }
2092: print XML ("
2093: \t\t</help>");
2094: }
2095: if (defined($insertlist{"$tag.which"})) {
2096: print XML ("
2097: \t\t<allow>".join(',',sort(@{ $insertlist{"$tag.which"} }))."</allow>");
2098: }
2099: print XML ("
2100: \t</tag>");
2101: $i++;
2102: }
2103: print XML ("\n</insertlist>\n");
2104: close(XML);
2105: }
2106:
2107: sub description {
2108: my ($token)=@_;
2109: my $tag = &get_tag($token);
2110: return $insertlist{$tag.'.description'};
2111: }
2112:
2113: # Returns a list containing the help file, and the description
2114: sub helpinfo {
2115: my ($token)=@_;
2116: my $tag = &get_tag($token);
2117: return ($insertlist{$tag.'.helpfile'}, $insertlist{$tag.'.helpdesc'});
2118: }
2119:
2120: sub get_tag {
2121: my ($token)=@_;
2122: my $tagnum;
2123: my $tag=$token->[1];
2124: foreach my $namespace (reverse(@Apache::lonxml::namespace)) {
2125: my $testtag = $namespace.'::'.$tag;
2126: $tagnum = $insertlist{"$testtag.num"};
2127: last if (defined($tagnum));
2128: }
2129: if (!defined($tagnum)) {
2130: $tagnum = $Apache::lonxml::insertlist{"$tag.num"};
2131: }
2132: return $insertlist{"$tagnum.tag"};
2133: }
2134:
2135: 1;
2136: __END__
2137:
2138:
FreeBSD-CVSweb <freebsd-cvsweb@FreeBSD.org>
![[BACK]](/icons/back.gif){kind=icon}
Return to lonxml.pm CVS log ![[TXT]](/icons/text.gif){kind=icon}
![[DIR]](/icons/dir.gif){kind=icon}
Up to [LON-CAPA] / loncom / xml