File:
[LON-CAPA] /
loncom /
xml /
lonxml.pm
Revision
1.288:
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Mon Oct 27 19:00:11 2003 UTC (20 years, 7 months ago) by
sakharuk
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MAIN
CVS tags:
HEAD
Bug 2323 (problem numbering when printing exam with answers) is fixed for resources from sequence (not for selected students yet). I want to know the Guy's opinion.
1: # The LearningOnline Network with CAPA
2: # XML Parser Module
3: #
4: # $Id: lonxml.pm,v 1.288 2003/10/27 19:00:11 sakharuk 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: # last modified 06/26/00 by Alexander Sakharuk
40: # 11/6 Gerd Kortemeyer
41: # 6/1/1 Gerd Kortemeyer
42: # 2/21,3/13 Guy
43: # 3/29,5/4 Gerd Kortemeyer
44: # 5/26 Gerd Kortemeyer
45: # 5/27 H. K. Ng
46: # 6/2,6/3,6/8,6/9 Gerd Kortemeyer
47: # 6/12,6/13 H. K. Ng
48: # 6/16 Gerd Kortemeyer
49: # 7/27 H. K. Ng
50: # 8/7,8/9,8/10,8/11,8/15,8/16,8/17,8/18,8/20,8/23,8/24 Gerd Kortemeyer
51: # Guy Albertelli
52: # 9/26 Gerd Kortemeyer
53: # Dec Guy Albertelli
54: # YEAR=2002
55: # 1/1 Gerd Kortemeyer
56: # 1/2 Matthew Hall
57: # 1/3 Gerd Kortemeyer
58: #
59:
60: package Apache::lonxml;
61: use vars
62: qw(@pwd @outputstack $redirection $import @extlinks $metamode $evaluate %insertlist @namespace $prevent_entity_encode $errorcount $warningcount);
63: use strict;
64: use HTML::LCParser();
65: use HTML::TreeBuilder();
66: use HTML::Entities();
67: use Safe();
68: use Safe::Hole();
69: use Math::Cephes();
70: use Math::Random();
71: use Opcode();
72: use POSIX qw(strftime);
73:
74:
75: sub register {
76: my ($space,@taglist) = @_;
77: foreach my $temptag (@taglist) {
78: push(@{ $Apache::lonxml::alltags{$temptag} },$space);
79: }
80: }
81:
82: sub deregister {
83: my ($space,@taglist) = @_;
84: foreach my $temptag (@taglist) {
85: my $tempspace = $Apache::lonxml::alltags{$temptag}[-1];
86: if ($tempspace eq $space) {
87: pop(@{ $Apache::lonxml::alltags{$temptag} });
88: }
89: }
90: #&printalltags();
91: }
92:
93: use Apache::Constants qw(:common);
94: use Apache::lontexconvert();
95: use Apache::style();
96: use Apache::run();
97: use Apache::londefdef();
98: use Apache::scripttag();
99: use Apache::languagetags();
100: use Apache::edit();
101: use Apache::inputtags();
102: use Apache::outputtags();
103: use Apache::lonnet();
104: use Apache::File();
105: use Apache::loncommon();
106: use Apache::lonfeedback();
107: use Apache::lonmsg();
108: use Apache::loncacc();
109: use Apache::lonlocal;
110:
111: #================================================== Main subroutine: xmlparse
112: #debugging control, to turn on debugging modify the correct handler
113: $Apache::lonxml::debug=0;
114:
115: # keeps count of the number of warnings and errors generated in a parse
116: $warningcount=0;
117: $errorcount=0;
118:
119: #path to the directory containing the file currently being processed
120: @pwd=();
121:
122: #these two are used for capturing a subset of the output for later processing,
123: #don't touch them directly use &startredirection and &endredirection
124: @outputstack = ();
125: $redirection = 0;
126:
127: #controls wheter the <import> tag actually does
128: $import = 1;
129: @extlinks=();
130:
131: # meta mode is a bit weird only some output is to be turned off
132: #<output> tag turns metamode off (defined in londefdef.pm)
133: $metamode = 0;
134:
135: # turns on and of run::evaluate actually derefencing var refs
136: $evaluate = 1;
137:
138: # data structure for eidt mode, determines what tags can go into what other tags
139: %insertlist=();
140:
141: # stores the list of active tag namespaces
142: @namespace=();
143:
144: # if 0 all high ASCII characters will be encoded into HTML Entities
145: $prevent_entity_encode=0;
146:
147: # has the dynamic menu been updated to know about this resource
148: $Apache::lonxml::registered=0;
149:
150: # a pointer the the Apache request object
151: $Apache::lonxml::request='';
152:
153: # a problem number counter, and check on ether it is used
154: $Apache::lonxml::counter=1;
155: $Apache::lonxml::counter_changed=0;
156:
157: #internal check on whether to look at style defs
158: $Apache::lonxml::usestyle=1;
159:
160: #locations used to store the parameter string for style substitutions
161: $Apache::lonxml::style_values='';
162: $Apache::lonxml::style_end_values='';
163:
164: #array of ssi calls that need to occur after we are done parsing
165: @Apache::lonxml::ssi_info=();
166:
167: #should we do the postag variable interpolation
168: $Apache::lonxml::post_evaluate=1;
169:
170: sub xmlbegin {
171: my $output='';
172: if ($ENV{'browser.mathml'}) {
173: $output='<?xml version="1.0"?>'
174: .'<?xml-stylesheet type="text/css" href="/adm/MathML/mathml.css"?>'
175: .'<!DOCTYPE html SYSTEM "/adm/MathML/mathml.dtd" '
176: .'[<!ENTITY mathns "http://www.w3.org/1998/Math/MathML">]>'
177: .'<html xmlns:math="http://www.w3.org/1998/Math/MathML" '
178: .'xmlns="http://www.w3.org/TR/REC-html40">';
179: } else {
180: $output='<html>';
181: }
182: return $output;
183: }
184:
185: sub xmlend {
186: my $mode='xml';
187: my $status='OPEN';
188: if ($Apache::lonhomework::parsing_a_problem) {
189: $mode='problem';
190: $status=$Apache::inputtags::status[-1];
191: }
192: return &Apache::lonfeedback::list_discussion().'</html>';
193: }
194:
195: sub tokeninputfield {
196: my $defhost=$Apache::lonnet::perlvar{'lonHostID'};
197: $defhost=~tr/a-z/A-Z/;
198: return (<<ENDINPUTFIELD)
199: <script type="text/javascript">
200: function updatetoken() {
201: var comp=new Array;
202: var barcode=unescape(document.tokeninput.barcode.value);
203: comp=barcode.split('*');
204: if (typeof(comp[0])!="undefined") {
205: document.tokeninput.codeone.value=comp[0];
206: }
207: if (typeof(comp[1])!="undefined") {
208: document.tokeninput.codetwo.value=comp[1];
209: }
210: if (typeof(comp[2])!="undefined") {
211: comp[2]=comp[2].toUpperCase();
212: document.tokeninput.codethree.value=comp[2];
213: }
214: document.tokeninput.barcode.value='';
215: }
216: </script>
217: <form method="post" name="tokeninput">
218: <table border="2" bgcolor="#FFFFBB">
219: <tr><th>DocID Checkin</th></tr>
220: <tr><td>
221: <table>
222: <tr>
223: <td>Scan in Barcode</td>
224: <td><input type="text" size="22" name="barcode"
225: onChange="updatetoken()"/></td>
226: </tr>
227: <tr><td><i>or</i> Type in DocID</td>
228: <td>
229: <input type="text" size="5" name="codeone" />
230: <b><font size="+2">*</font></b>
231: <input type="text" size="5" name="codetwo" />
232: <b><font size="+2">*</font></b>
233: <input type="text" size="10" name="codethree" value="$defhost"
234: onChange="this.value=this.value.toUpperCase()" />
235: </td></tr>
236: </table>
237: </td></tr>
238: <tr><td><input type="submit" value="Check in DocID" /></td></tr>
239: </table>
240: </form>
241: ENDINPUTFIELD
242: }
243:
244: sub maketoken {
245: my ($symb,$tuname,$tudom,$tcrsid)=@_;
246: unless ($symb) {
247: $symb=&Apache::lonnet::symbread();
248: }
249: unless ($tuname) {
250: $tuname=$ENV{'user.name'};
251: $tudom=$ENV{'user.domain'};
252: $tcrsid=$ENV{'request.course.id'};
253: }
254:
255: return &Apache::lonnet::checkout($symb,$tuname,$tudom,$tcrsid);
256: }
257:
258: sub printtokenheader {
259: my ($target,$token,$tsymb,$tcrsid,$tudom,$tuname)=@_;
260: unless ($token) { return ''; }
261:
262: my ($symb,$courseid,$domain,$name) = &Apache::lonxml::whichuser();
263: unless ($tsymb) {
264: $tsymb=$symb;
265: }
266: unless ($tuname) {
267: $tuname=$name;
268: $tudom=$domain;
269: $tcrsid=$courseid;
270: }
271:
272: my %reply=&Apache::lonnet::get('environment',
273: ['firstname','middlename','lastname','generation'],
274: $tudom,$tuname);
275: my $plainname=$reply{'firstname'}.' '.
276: $reply{'middlename'}.' '.
277: $reply{'lastname'}.' '.
278: $reply{'generation'};
279:
280: if ($target eq 'web') {
281: my %idhash=&Apache::lonnet::idrget($tudom,($tuname));
282: return
283: '<img align="right" src="/cgi-bin/barcode.png?encode='.$token.'" />'.
284: &mt('Checked out for').' '.$plainname.
285: '<br />'.&mt('User').': '.$tuname.' at '.$tudom.
286: '<br />'.&mt('ID').': '.$idhash{$tuname}.
287: '<br />'.&mt('CourseID').': '.$tcrsid.
288: '<br />'.&mt('Course').': '.$ENV{'course.'.$tcrsid.'.description'}.
289: '<br />'.&mt('DocID').': '.$token.
290: '<br />'.&mt('Time').': '.&Apache::lonlocal::locallocaltime().'<hr />';
291: } else {
292: return $token;
293: }
294: }
295:
296: sub fontsettings() {
297: my $headerstring='';
298: if (($ENV{'browser.os'} eq 'mac') && (!$ENV{'browser.mathml'})) {
299: $headerstring.=
300: '<meta Content-Type="text/html; charset=x-mac-roman">';
301: } elsif (!$ENV{'browser.mathml'} && $ENV{'browser.unicode'}) {
302: $headerstring.=
303: '<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />';
304: }
305: return $headerstring;
306: }
307:
308: sub printalltags {
309: my $temp;
310: foreach $temp (sort keys %Apache::lonxml::alltags) {
311: &Apache::lonxml::debug("$temp -- ".
312: join(',',@{ $Apache::lonxml::alltags{$temp} }));
313: }
314: }
315:
316: sub xmlparse {
317: my ($request,$target,$content_file_string,$safeinit,%style_for_target) = @_;
318:
319: &setup_globals($request,$target);
320: &Apache::inputtags::initialize_inputtags();
321: &Apache::outputtags::initialize_outputtags();
322: &Apache::edit::initialize_edit();
323: &Apache::londefdef::initialize_londefdef();
324:
325: #
326: # do we have a course style file?
327: #
328:
329: if ($ENV{'request.course.id'} && $ENV{'request.state'} ne 'construct') {
330: my $bodytext=
331: $ENV{'course.'.$ENV{'request.course.id'}.'.default_xml_style'};
332: if ($bodytext) {
333: my $location=&Apache::lonnet::filelocation('',$bodytext);
334: my $styletext=&Apache::lonnet::getfile($location);
335: if ($styletext ne '-1') {
336: %style_for_target = (%style_for_target,
337: &Apache::style::styleparser($target,$styletext));
338: }
339: }
340: }
341: #&printalltags();
342: my @pars = ();
343: my $pwd=$ENV{'request.filename'};
344: $pwd =~ s:/[^/]*$::;
345: &newparser(\@pars,\$content_file_string,$pwd);
346:
347: my $safeeval = new Safe;
348: my $safehole = new Safe::Hole;
349: &init_safespace($target,$safeeval,$safehole,$safeinit);
350: #-------------------- Redefinition of the target in the case of compound target
351:
352: ($target, my @tenta) = split('&&',$target);
353:
354: my @stack = ();
355: my @parstack = ();
356: &initdepth;
357:
358: my $finaloutput = &inner_xmlparse($target,\@stack,\@parstack,\@pars,
359: $safeeval,\%style_for_target);
360:
361: if ($ENV{'request.uri'}) {
362: &writeallows($ENV{'request.uri'});
363: }
364: &do_registered_ssi();
365: if ($Apache::lonxml::counter_changed) { &store_counter() }
366: return $finaloutput;
367: }
368:
369: sub htmlclean {
370: my ($raw,$full)=@_;
371:
372: my $tree = HTML::TreeBuilder->new;
373: $tree->ignore_unknown(0);
374:
375: $tree->parse($raw);
376:
377: my $output= $tree->as_HTML(undef,' ');
378:
379: $output=~s/\<(br|hr|img|meta|allow)(.*?)\>/\<$1$2 \/\>/gis;
380: $output=~s/\<\/(br|hr|img|meta|allow)\>//gis;
381: unless ($full) {
382: $output=~s/\<[\/]*(body|head|html)\>//gis;
383: }
384:
385: $tree = $tree->delete;
386:
387: return $output;
388: }
389:
390: sub latex_special_symbols {
391: my ($string,$where)=@_;
392: if ($where eq 'header') {
393: $string =~ s/(\\|_|\^)/ /g;
394: $string =~ s/(\$|%|\#|&|\{|\})/\\$1/g;
395: $string =~ s/_/ /g;
396: } else {
397: $string=~s/\\ /\\char92 /g;
398: $string=~s/\^/\\\^ /g;
399: $string=~s/\~/\\char126 /g;
400: $string=~s/(&[^A-Za-z\#])/\\$1/g;
401: $string=~s/([^&])\#/$1\\#/g;
402: $string=~s/(\$|_|{|})/\\$1/g;
403: $string=~s/\\char92 /\\texttt{\\char92}/g;
404: $string=~s/(>|<)/\$$1\$/g; #more or less
405: if ($string=~m/\d%/) {$string =~ s/(\d)%/$1\\%/g;} #percent after digit
406: if ($string=~m/\s%/) {$string =~ s/(\s)%/$1\\%/g;} #percent after space
407: if ($string eq '%.') {$string = '\%.';} #percent at the end of statement
408: }
409: return $string;
410: }
411:
412: sub inner_xmlparse {
413: my ($target,$stack,$parstack,$pars,$safeeval,$style_for_target)=@_;
414: my $finaloutput = '';
415: my $result;
416: my $token;
417: my $dontpop=0;
418: while ( $#$pars > -1 ) {
419: while ($token = $$pars['-1']->get_token) {
420: if (($token->[0] eq 'T') || ($token->[0] eq 'C') ) {
421: if ($metamode<1) {
422: my $text=$token->[1];
423: if ($token->[0] eq 'C' && $target eq 'tex') {
424: $text = '';
425: # $text = '%'.$text."\n";
426: }
427: $result.=$text;
428: }
429: } elsif (($token->[0] eq 'D')) {
430: if ($metamode<1 && $target eq 'web') {
431: my $text=$token->[1];
432: $result.=$text;
433: }
434: } elsif ($token->[0] eq 'PI') {
435: if ($metamode<1 && $target eq 'web') {
436: $result=$token->[2];
437: }
438: } elsif ($token->[0] eq 'S') {
439: # add tag to stack
440: push (@$stack,$token->[1]);
441: # add parameters list to another stack
442: push (@$parstack,&parstring($token));
443: &increasedepth($token);
444: if ($Apache::lonxml::usestyle &&
445: exists($$style_for_target{$token->[1]})) {
446: $Apache::lonxml::usestyle=0;
447: my $string=$$style_for_target{$token->[1]}.
448: '<LONCAPA_INTERNAL_TURN_STYLE_ON />';
449: &Apache::lonxml::newparser($pars,\$string);
450: $Apache::lonxml::style_values=$$parstack[-1];
451: $Apache::lonxml::style_end_values=$$parstack[-1];
452: } else {
453: $result = &callsub("start_$token->[1]", $target, $token, $stack,
454: $parstack, $pars, $safeeval, $style_for_target);
455: }
456: } elsif ($token->[0] eq 'E') {
457: if ($Apache::lonxml::usestyle &&
458: exists($$style_for_target{'/'."$token->[1]"})) {
459: $Apache::lonxml::usestyle=0;
460: my $string=$$style_for_target{'/'.$token->[1]}.
461: '<LONCAPA_INTERNAL_TURN_STYLE_ON end="'.$token->[1].'" />';
462: &Apache::lonxml::newparser($pars,\$string);
463: $Apache::lonxml::style_values=$Apache::lonxml::style_end_values;
464: $Apache::lonxml::style_end_values='';
465: $dontpop=1;
466: } else {
467: #clear out any tags that didn't end
468: while ($token->[1] ne $$stack['-1'] && ($#$stack > -1)) {
469: my $lasttag=$$stack[-1];
470: if ($token->[1] =~ /^$lasttag$/i) {
471: &Apache::lonxml::warning('Using tag </'.$token->[1].'> on line '.$token->[3].' as end tag to <'.$$stack[-1].'>');
472: last;
473: } else {
474: &Apache::lonxml::warning('Found tag </'.$token->[1].'> on line '.$token->[3].' when looking for </'.$$stack[-1].'> in file');
475: &end_tag($stack,$parstack,$token);
476: }
477: }
478: $result = &callsub("end_$token->[1]", $target, $token, $stack,
479: $parstack, $pars,$safeeval, $style_for_target);
480: }
481: } else {
482: &Apache::lonxml::error("Unknown token event :$token->[0]:$token->[1]:");
483: }
484: #evaluate variable refs in result
485: if ($Apache::lonxml::post_evaluate &&$result ne "") {
486: my $extras;
487: if (!$Apache::lonxml::usestyle) {
488: $extras=$Apache::lonxml::style_values;
489: }
490: if ( $#$parstack > -1 ) {
491: $result=&Apache::run::evaluate($result,$safeeval,$extras.$$parstack[-1]);
492: } else {
493: $result= &Apache::run::evaluate($result,$safeeval,$extras);
494: }
495: }
496: $Apache::lonxml::post_evaluate=1;
497:
498: if (($token->[0] eq 'T') || ($token->[0] eq 'C') || ($token->[0] eq 'D') ) {
499: #Style file definitions should be correct
500: if ($target eq 'tex' && ($Apache::lonxml::usestyle)) {
501: $result=&latex_special_symbols($result);
502: }
503: }
504:
505: # Encode any high ASCII characters
506: # if (!$Apache::lonxml::prevent_entity_encode) {
507: # $result=&HTML::Entities::encode($result,"\200-\377");
508: # }
509: if ($Apache::lonxml::redirection) {
510: $Apache::lonxml::outputstack['-1'] .= $result;
511: } else {
512: $finaloutput.=$result;
513: }
514: $result = '';
515:
516: if ($token->[0] eq 'E' && !$dontpop) {
517: &end_tag($stack,$parstack,$token);
518: }
519: $dontpop=0;
520: }
521: if ($#$pars > -1) {
522: pop @$pars;
523: pop @Apache::lonxml::pwd;
524: }
525: }
526:
527: # if ($target eq 'meta') {
528: # $finaloutput.=&endredirection;
529: # }
530:
531:
532: if (($ENV{'QUERY_STRING'}) && ($target eq 'web')) {
533: $finaloutput=&afterburn($finaloutput);
534: }
535: return $finaloutput;
536: }
537:
538: sub callsub {
539: my ($sub,$target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
540: my $currentstring='';
541: my $nodefault;
542: {
543: my $sub1;
544: no strict 'refs';
545: my $tag=$token->[1];
546: # get utterly rid of extended html tags
547: if ($tag=~/^x\-/i) { return ''; }
548: my $space=$Apache::lonxml::alltags{$tag}[-1];
549: if (!$space) {
550: $tag=~tr/A-Z/a-z/;
551: $sub=~tr/A-Z/a-z/;
552: $space=$Apache::lonxml::alltags{$tag}[-1]
553: }
554:
555: my $deleted=0;
556: $Apache::lonxml::curdepth=join('_',@Apache::lonxml::depthcounter);
557: if (($token->[0] eq 'S') && ($target eq 'modified')) {
558: $deleted=&Apache::edit::handle_delete($space,$target,$token,$tagstack,
559: $parstack,$parser,$safeeval,
560: $style);
561: }
562: if (!$deleted) {
563: if ($space) {
564: #&Apache::lonxml::debug("Calling sub $sub in $space $metamode");
565: $sub1="$space\:\:$sub";
566: ($currentstring,$nodefault) = &$sub1($target,$token,$tagstack,
567: $parstack,$parser,$safeeval,
568: $style);
569: } else {
570: #&Apache::lonxml::debug("NOT Calling sub $sub in $space $metamode");
571: if ($metamode <1) {
572: if (defined($token->[4]) && ($metamode < 1)) {
573: $currentstring = $token->[4];
574: } else {
575: $currentstring = $token->[2];
576: }
577: }
578: }
579: # &Apache::lonxml::debug("nodefalt:$nodefault:");
580: if ($currentstring eq '' && $nodefault eq '') {
581: if ($target eq 'edit') {
582: #&Apache::lonxml::debug("doing default edit for $token->[1]");
583: if ($token->[0] eq 'S') {
584: $currentstring = &Apache::edit::tag_start($target,$token);
585: } elsif ($token->[0] eq 'E') {
586: $currentstring = &Apache::edit::tag_end($target,$token);
587: }
588: } elsif ($target eq 'modified') {
589: if ($token->[0] eq 'S') {
590: $currentstring = $token->[4];
591: $currentstring.=&Apache::edit::handle_insert();
592: } elsif ($token->[0] eq 'E') {
593: $currentstring = $token->[2];
594: $currentstring.=&Apache::edit::handle_insertafter($token->[1]);
595: } else {
596: $currentstring = $token->[2];
597: }
598: }
599: }
600: }
601: use strict 'refs';
602: }
603: return $currentstring;
604: }
605:
606: sub setup_globals {
607: my ($request,$target)=@_;
608: $Apache::lonxml::request=$request;
609: $Apache::lonxml::registered = 0;
610: $errorcount=0;
611: $warningcount=0;
612: $Apache::lonxml::default_homework_loaded=0;
613: $Apache::lonxml::usestyle=1;
614: &init_counter();
615: @Apache::lonxml::pwd=();
616: @Apache::lonxml::extlinks=();
617: @Apache::lonxml::ssi_info=();
618: $Apache::lonxml::post_evaluate=1;
619: if ($target eq 'meta') {
620: $Apache::lonxml::redirection = 0;
621: $Apache::lonxml::metamode = 1;
622: $Apache::lonxml::evaluate = 1;
623: $Apache::lonxml::import = 0;
624: } elsif ($target eq 'answer') {
625: $Apache::lonxml::redirection = 0;
626: $Apache::lonxml::metamode = 1;
627: $Apache::lonxml::evaluate = 1;
628: $Apache::lonxml::import = 1;
629: } elsif ($target eq 'grade') {
630: &startredirection;
631: $Apache::lonxml::metamode = 0;
632: $Apache::lonxml::evaluate = 1;
633: $Apache::lonxml::import = 1;
634: } elsif ($target eq 'modified') {
635: $Apache::lonxml::redirection = 0;
636: $Apache::lonxml::metamode = 0;
637: $Apache::lonxml::evaluate = 0;
638: $Apache::lonxml::import = 0;
639: } elsif ($target eq 'edit') {
640: $Apache::lonxml::redirection = 0;
641: $Apache::lonxml::metamode = 0;
642: $Apache::lonxml::evaluate = 0;
643: $Apache::lonxml::import = 0;
644: } elsif ($target eq 'analyze') {
645: $Apache::lonxml::redirection = 0;
646: $Apache::lonxml::metamode = 0;
647: $Apache::lonxml::evaluate = 1;
648: $Apache::lonxml::import = 1;
649: } else {
650: $Apache::lonxml::redirection = 0;
651: $Apache::lonxml::metamode = 0;
652: $Apache::lonxml::evaluate = 1;
653: $Apache::lonxml::import = 1;
654: }
655: }
656:
657: sub init_safespace {
658: my ($target,$safeeval,$safehole,$safeinit) = @_;
659: $safeeval->permit("entereval");
660: $safeeval->permit(":base_math");
661: $safeeval->permit("sort");
662: $safeeval->permit("time");
663: $safeeval->deny(":base_io");
664: $safehole->wrap(\&Apache::scripttag::xmlparse,$safeeval,'&xmlparse');
665: $safehole->wrap(\&Apache::outputtags::multipart,$safeeval,'&multipart');
666: $safehole->wrap(\&Apache::lonnet::EXT,$safeeval,'&EXT');
667:
668: $safehole->wrap(\&Math::Cephes::asin,$safeeval,'&asin');
669: $safehole->wrap(\&Math::Cephes::acos,$safeeval,'&acos');
670: $safehole->wrap(\&Math::Cephes::atan,$safeeval,'&atan');
671: $safehole->wrap(\&Math::Cephes::sinh,$safeeval,'&sinh');
672: $safehole->wrap(\&Math::Cephes::cosh,$safeeval,'&cosh');
673: $safehole->wrap(\&Math::Cephes::tanh,$safeeval,'&tanh');
674: $safehole->wrap(\&Math::Cephes::asinh,$safeeval,'&asinh');
675: $safehole->wrap(\&Math::Cephes::acosh,$safeeval,'&acosh');
676: $safehole->wrap(\&Math::Cephes::atanh,$safeeval,'&atanh');
677: $safehole->wrap(\&Math::Cephes::erf,$safeeval,'&erf');
678: $safehole->wrap(\&Math::Cephes::erfc,$safeeval,'&erfc');
679: $safehole->wrap(\&Math::Cephes::j0,$safeeval,'&j0');
680: $safehole->wrap(\&Math::Cephes::j1,$safeeval,'&j1');
681: $safehole->wrap(\&Math::Cephes::jn,$safeeval,'&jn');
682: $safehole->wrap(\&Math::Cephes::jv,$safeeval,'&jv');
683: $safehole->wrap(\&Math::Cephes::y0,$safeeval,'&y0');
684: $safehole->wrap(\&Math::Cephes::y1,$safeeval,'&y1');
685: $safehole->wrap(\&Math::Cephes::yn,$safeeval,'&yn');
686: $safehole->wrap(\&Math::Cephes::yv,$safeeval,'&yv');
687:
688: $safehole->wrap(\&Math::Cephes::bdtr ,$safeeval,'&bdtr' );
689: $safehole->wrap(\&Math::Cephes::bdtrc ,$safeeval,'&bdtrc' );
690: $safehole->wrap(\&Math::Cephes::bdtri ,$safeeval,'&bdtri' );
691: $safehole->wrap(\&Math::Cephes::btdtr ,$safeeval,'&btdtr' );
692: $safehole->wrap(\&Math::Cephes::chdtr ,$safeeval,'&chdtr' );
693: $safehole->wrap(\&Math::Cephes::chdtrc,$safeeval,'&chdtrc');
694: $safehole->wrap(\&Math::Cephes::chdtri,$safeeval,'&chdtri');
695: $safehole->wrap(\&Math::Cephes::fdtr ,$safeeval,'&fdtr' );
696: $safehole->wrap(\&Math::Cephes::fdtrc ,$safeeval,'&fdtrc' );
697: $safehole->wrap(\&Math::Cephes::fdtri ,$safeeval,'&fdtri' );
698: $safehole->wrap(\&Math::Cephes::gdtr ,$safeeval,'&gdtr' );
699: $safehole->wrap(\&Math::Cephes::gdtrc ,$safeeval,'&gdtrc' );
700: $safehole->wrap(\&Math::Cephes::nbdtr ,$safeeval,'&nbdtr' );
701: $safehole->wrap(\&Math::Cephes::nbdtrc,$safeeval,'&nbdtrc');
702: $safehole->wrap(\&Math::Cephes::nbdtri,$safeeval,'&nbdtri');
703: $safehole->wrap(\&Math::Cephes::ndtr ,$safeeval,'&ndtr' );
704: $safehole->wrap(\&Math::Cephes::ndtri ,$safeeval,'&ndtri' );
705: $safehole->wrap(\&Math::Cephes::pdtr ,$safeeval,'&pdtr' );
706: $safehole->wrap(\&Math::Cephes::pdtrc ,$safeeval,'&pdtrc' );
707: $safehole->wrap(\&Math::Cephes::pdtri ,$safeeval,'&pdtri' );
708: $safehole->wrap(\&Math::Cephes::stdtr ,$safeeval,'&stdtr' );
709: $safehole->wrap(\&Math::Cephes::stdtri,$safeeval,'&stdtri');
710:
711: # $safehole->wrap(\&Math::Cephes::new_fract,$safeeval,'&new_fract');
712: # $safehole->wrap(\&Math::Cephes::radd,$safeeval,'&radd');
713: # $safehole->wrap(\&Math::Cephes::rsub,$safeeval,'&rsub');
714: # $safehole->wrap(\&Math::Cephes::rmul,$safeeval,'&rmul');
715: # $safehole->wrap(\&Math::Cephes::rdiv,$safeeval,'&rdiv');
716: # $safehole->wrap(\&Math::Cephes::euclid,$safeeval,'&euclid');
717:
718: $safehole->wrap(\&Math::Random::random_beta,$safeeval,'&math_random_beta');
719: $safehole->wrap(\&Math::Random::random_chi_square,$safeeval,'&math_random_chi_square');
720: $safehole->wrap(\&Math::Random::random_exponential,$safeeval,'&math_random_exponential');
721: $safehole->wrap(\&Math::Random::random_f,$safeeval,'&math_random_f');
722: $safehole->wrap(\&Math::Random::random_gamma,$safeeval,'&math_random_gamma');
723: $safehole->wrap(\&Math::Random::random_multivariate_normal,$safeeval,'&math_random_multivariate_normal');
724: $safehole->wrap(\&Math::Random::random_multinomial,$safeeval,'&math_random_multinomial');
725: $safehole->wrap(\&Math::Random::random_noncentral_chi_square,$safeeval,'&math_random_noncentral_chi_square');
726: $safehole->wrap(\&Math::Random::random_noncentral_f,$safeeval,'&math_random_noncentral_f');
727: $safehole->wrap(\&Math::Random::random_normal,$safeeval,'&math_random_normal');
728: $safehole->wrap(\&Math::Random::random_permutation,$safeeval,'&math_random_permutation');
729: $safehole->wrap(\&Math::Random::random_permuted_index,$safeeval,'&math_random_permuted_index');
730: $safehole->wrap(\&Math::Random::random_uniform,$safeeval,'&math_random_uniform');
731: $safehole->wrap(\&Math::Random::random_poisson,$safeeval,'&math_random_poisson');
732: $safehole->wrap(\&Math::Random::random_uniform_integer,$safeeval,'&math_random_uniform_integer');
733: $safehole->wrap(\&Math::Random::random_negative_binomial,$safeeval,'&math_random_negative_binomial');
734: $safehole->wrap(\&Math::Random::random_binomial,$safeeval,'&math_random_binomial');
735: $safehole->wrap(\&Math::Random::random_seed_from_phrase,$safeeval,'&random_seed_from_phrase');
736: $safehole->wrap(\&Math::Random::random_set_seed_from_phrase,$safeeval,'&random_set_seed_from_phrase');
737: $safehole->wrap(\&Math::Random::random_get_seed,$safeeval,'&random_get_seed');
738: $safehole->wrap(\&Math::Random::random_set_seed,$safeeval,'&random_set_seed');
739:
740: #need to inspect this class of ops
741: # $safeeval->deny(":base_orig");
742: $safeinit .= ';$external::target="'.$target.'";';
743: my $rndseed;
744: my ($symb,$courseid,$domain,$name) = &Apache::lonxml::whichuser();
745: $rndseed=&Apache::lonnet::rndseed($symb,$courseid,$domain,$name);
746: $safeinit .= ';$external::randomseed='.$rndseed.';';
747: &Apache::lonxml::debug("Setting rndseed to $rndseed");
748: &Apache::run::run($safeinit,$safeeval);
749: }
750:
751: sub default_homework_load {
752: my ($safeeval)=@_;
753: &Apache::lonxml::debug('Loading default_homework');
754: my $default=&Apache::lonnet::getfile('/home/httpd/html/res/adm/includes/default_homework.lcpm');
755: if ($default eq -1) {
756: &Apache::lonxml::error("<b>Unable to find <i>default_homework.lcpm</i></b>");
757: } else {
758: &Apache::run::run($default,$safeeval);
759: $Apache::lonxml::default_homework_loaded=1;
760: }
761: }
762:
763: sub startredirection {
764: $Apache::lonxml::redirection++;
765: push (@Apache::lonxml::outputstack, '');
766: }
767:
768: sub endredirection {
769: if (!$Apache::lonxml::redirection) {
770: &Apache::lonxml::error("Endredirection was called, before a startredirection, perhaps you have unbalanced tags. Some debuging information:".join ":",caller);
771: return '';
772: }
773: $Apache::lonxml::redirection--;
774: pop @Apache::lonxml::outputstack;
775: }
776:
777: sub end_tag {
778: my ($tagstack,$parstack,$token)=@_;
779: pop(@$tagstack);
780: pop(@$parstack);
781: &decreasedepth($token);
782: }
783:
784: sub initdepth {
785: @Apache::lonxml::depthcounter=();
786: $Apache::lonxml::depth=-1;
787: $Apache::lonxml::olddepth=-1;
788: }
789:
790: sub increasedepth {
791: my ($token) = @_;
792: $Apache::lonxml::depth++;
793: $Apache::lonxml::depthcounter[$Apache::lonxml::depth]++;
794: if ($Apache::lonxml::depthcounter[$Apache::lonxml::depth]==1) {
795: $Apache::lonxml::olddepth=$Apache::lonxml::depth;
796: }
797: my $curdepth=join('_',@Apache::lonxml::depthcounter);
798: &Apache::lonxml::debug("s $Apache::lonxml::depth : $Apache::lonxml::olddepth : $curdepth : $token->[1]\n");
799: #print "<br />s $Apache::lonxml::depth : $Apache::lonxml::olddepth : $curdepth : $token->[1]\n";
800: }
801:
802: sub decreasedepth {
803: my ($token) = @_;
804: $Apache::lonxml::depth--;
805: if ($Apache::lonxml::depth<$Apache::lonxml::olddepth-1) {
806: $#Apache::lonxml::depthcounter--;
807: $Apache::lonxml::olddepth=$Apache::lonxml::depth+1;
808: }
809: if ( $Apache::lonxml::depth < -1) {
810: &Apache::lonxml::warning(&mt("Missing tags, unable to properly run file."));
811: $Apache::lonxml::depth='-1';
812: }
813: my $curdepth=join('_',@Apache::lonxml::depthcounter);
814: &Apache::lonxml::debug("e $Apache::lonxml::depth : $Apache::lonxml::olddepth : $token->[1] : $curdepth\n");
815: #print "<br />e $Apache::lonxml::depth : $Apache::lonxml::olddepth : $token->[1] : $curdepth\n";
816: }
817:
818: sub get_all_text_unbalanced {
819: #there is a copy of this in lonpublisher.pm
820: my($tag,$pars)= @_;
821: my $token;
822: my $result='';
823: $tag='<'.$tag.'>';
824: while ($token = $$pars[-1]->get_token) {
825: if (($token->[0] eq 'T')||($token->[0] eq 'C')||($token->[0] eq 'D')) {
826: $result.=$token->[1];
827: } elsif ($token->[0] eq 'PI') {
828: $result.=$token->[2];
829: } elsif ($token->[0] eq 'S') {
830: $result.=$token->[4];
831: } elsif ($token->[0] eq 'E') {
832: $result.=$token->[2];
833: }
834: if ($result =~ /(.*)\Q$tag\E(.*)/s) {
835: &Apache::lonxml::debug('Got a winner with leftovers ::'.$2);
836: &Apache::lonxml::debug('Result is :'.$1);
837: $result=$1;
838: my $redo=$tag.$2;
839: &Apache::lonxml::newparser($pars,\$redo);
840: last;
841: }
842: }
843: return $result
844: }
845:
846: sub increment_counter {
847: my ($increment) = @_;
848: if ($ENV{'form.freeze_counter'} ne 'yes') {
849: if (defined($increment) && $increment gt 0) {
850: $Apache::lonxml::counter+=$increment;
851: } else {
852: $Apache::lonxml::counter++;
853: }
854: $Apache::lonxml::counter_changed=1;
855: }
856: }
857:
858: sub init_counter {
859: if (defined($ENV{'form.counter'})) {
860: $Apache::lonxml::counter=$ENV{'form.counter'};
861: $Apache::lonxml::counter_changed=0;
862: } else {
863: $Apache::lonxml::counter=1;
864: $Apache::lonxml::counter_changed=1;
865: }
866: }
867:
868: sub store_counter {
869: &Apache::lonnet::appenv(('form.counter' => $Apache::lonxml::counter));
870: return '';
871: }
872:
873: sub get_all_text {
874: my($tag,$pars,$style)= @_;
875: my $gotfullstack=1;
876: if (ref($pars) ne 'ARRAY') {
877: $gotfullstack=0;
878: $pars=[$pars];
879: }
880: if (ref($style) ne 'HASH') {
881: $style={};
882: }
883: my $depth=0;
884: my $token;
885: my $result='';
886: if ( $tag =~ m:^/: ) {
887: my $tag=substr($tag,1);
888: #&Apache::lonxml::debug("have:$tag:");
889: my $top_empty=0;
890: while (($depth >=0) && ($#$pars > -1) && (!$top_empty)) {
891: while (($depth >=0) && ($token = $$pars[-1]->get_token)) {
892: #&Apache::lonxml::debug("e token:$token->[0]:$depth:$token->[1]:".$#$pars.":".$#Apache::lonxml::pwd);
893: if (($token->[0] eq 'T')||($token->[0] eq 'C')||($token->[0] eq 'D')) {
894: $result.=$token->[1];
895: } elsif ($token->[0] eq 'PI') {
896: $result.=$token->[2];
897: } elsif ($token->[0] eq 'S') {
898: if ($token->[1] =~ /^$tag$/i) { $depth++; }
899: if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_ON$/i) { $Apache::lonxml::usestyle=1; }
900: if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_OFF$/i) { $Apache::lonxml::usestyle=0; }
901: $result.=$token->[4];
902: } elsif ($token->[0] eq 'E') {
903: if ( $token->[1] =~ /^$tag$/i) { $depth--; }
904: #skip sending back the last end tag
905: if ($depth == 0 && exists($$style{'/'.$token->[1]}) && $Apache::lonxml::usestyle) {
906: my $string=
907: '<LONCAPA_INTERNAL_TURN_STYLE_OFF end="yes" />'.
908: $$style{'/'.$token->[1]}.
909: $token->[2].
910: '<LONCAPA_INTERNAL_TURN_STYLE_ON />';
911: &Apache::lonxml::newparser($pars,\$string);
912: #&Apache::lonxml::debug("reParsing $string");
913: next;
914: }
915: if ($depth > -1) {
916: $result.=$token->[2];
917: } else {
918: $$pars[-1]->unget_token($token);
919: }
920: }
921: }
922: if (($depth >=0) && ($#$pars == 0) ) { $top_empty=1; }
923: if (($depth >=0) && ($#$pars > 0) ) {
924: pop(@$pars);
925: pop(@Apache::lonxml::pwd);
926: }
927: }
928: if ($top_empty && $depth >= 0) {
929: #never found the end tag ran out of text, throw error send back blank
930: &error('Never found end tag for <'.$tag.
931: '> current string <pre>'.
932: &HTML::Entities::encode($result).
933: '</pre>');
934: if ($gotfullstack) {
935: my $newstring='</'.$tag.'>'.$result;
936: &Apache::lonxml::newparser($pars,\$newstring);
937: }
938: $result='';
939: }
940: } else {
941: while ($#$pars > -1) {
942: while ($token = $$pars[-1]->get_token) {
943: #&Apache::lonxml::debug("s token:$token->[0]:$depth:$token->[1]");
944: if (($token->[0] eq 'T')||($token->[0] eq 'C')||
945: ($token->[0] eq 'D')) {
946: $result.=$token->[1];
947: } elsif ($token->[0] eq 'PI') {
948: $result.=$token->[2];
949: } elsif ($token->[0] eq 'S') {
950: if ( $token->[1] =~ /^$tag$/i) {
951: $$pars[-1]->unget_token($token); last;
952: } else {
953: $result.=$token->[4];
954: }
955: if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_ON$/i) { $Apache::lonxml::usestyle=1; }
956: if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_OFF$/i) { $Apache::lonxml::usestyle=0; }
957: } elsif ($token->[0] eq 'E') {
958: $result.=$token->[2];
959: }
960: }
961: if (($#$pars > 0) ) {
962: pop(@$pars);
963: pop(@Apache::lonxml::pwd);
964: } else { last; }
965: }
966: }
967: #&Apache::lonxml::debug("Exit:$result:");
968: return $result
969: }
970:
971: sub newparser {
972: my ($parser,$contentref,$dir) = @_;
973: push (@$parser,HTML::LCParser->new($contentref));
974: $$parser['-1']->xml_mode('1');
975: if ( $dir eq '' ) {
976: push (@Apache::lonxml::pwd, $Apache::lonxml::pwd[$#Apache::lonxml::pwd]);
977: } else {
978: push (@Apache::lonxml::pwd, $dir);
979: }
980: }
981:
982: sub parstring {
983: my ($token) = @_;
984: my $temp='';
985: foreach (@{$token->[3]}) {
986: unless ($_=~/\W/) {
987: my $val=$token->[2]->{$_};
988: $val =~ s/([\%\@\\\"\'])/\\$1/g;
989: #if ($val =~ m/^[\%\@]/) { $val="\\".$val; }
990: $temp .= "my \$$_=\"$val\";";
991: }
992: }
993: return $temp;
994: }
995:
996: sub writeallows {
997: unless ($#extlinks>=0) { return; }
998: my $thisurl='/res/'.&Apache::lonnet::declutter(shift);
999: if ($ENV{'httpref.'.$thisurl}) {
1000: $thisurl=$ENV{'httpref.'.$thisurl};
1001: }
1002: my $thisdir=$thisurl;
1003: $thisdir=~s/\/[^\/]+$//;
1004: my %httpref=();
1005: foreach (@extlinks) {
1006: $httpref{'httpref.'.
1007: &Apache::lonnet::hreflocation($thisdir,$_)}=$thisurl;
1008: }
1009: @extlinks=();
1010: &Apache::lonnet::appenv(%httpref);
1011: }
1012:
1013: sub register_ssi {
1014: my ($url,%form)=@_;
1015: push (@Apache::lonxml::ssi_info,{'url'=>$url,'form'=>\%form});
1016: return '';
1017: }
1018:
1019: sub do_registered_ssi {
1020: foreach my $info (@Apache::lonxml::ssi_info) {
1021: my %form=%{ $info->{'form'}};
1022: my $url=$info->{'url'};
1023: &Apache::lonnet::ssi($url,%form);
1024: }
1025: }
1026: #
1027: # Afterburner handles anchors, highlights and links
1028: #
1029: sub afterburn {
1030: my $result=shift;
1031: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
1032: ['highlight','anchor','link']);
1033: if ($ENV{'form.highlight'}) {
1034: foreach (split(/\,/,$ENV{'form.highlight'})) {
1035: my $anchorname=$_;
1036: my $matchthis=$anchorname;
1037: $matchthis=~s/\_+/\\s\+/g;
1038: $result=~s/($matchthis)/\<font color=\"red\"\>$1\<\/font\>/gs;
1039: }
1040: }
1041: if ($ENV{'form.link'}) {
1042: foreach (split(/\,/,$ENV{'form.link'})) {
1043: my ($anchorname,$linkurl)=split(/\>/,$_);
1044: my $matchthis=$anchorname;
1045: $matchthis=~s/\_+/\\s\+/g;
1046: $result=~s/($matchthis)/\<a href=\"$linkurl\"\>$1\<\/a\>/gs;
1047: }
1048: }
1049: if ($ENV{'form.anchor'}) {
1050: my $anchorname=$ENV{'form.anchor'};
1051: my $matchthis=$anchorname;
1052: $matchthis=~s/\_+/\\s\+/g;
1053: $result=~s/($matchthis)/\<a name=\"$anchorname\"\>$1\<\/a\>/s;
1054: $result.=(<<"ENDSCRIPT");
1055: <script type="text/javascript">
1056: document.location.hash='$anchorname';
1057: </script>
1058: ENDSCRIPT
1059: }
1060: return $result;
1061: }
1062:
1063: sub storefile {
1064: my ($file,$contents)=@_;
1065: if (my $fh=Apache::File->new('>'.$file)) {
1066: print $fh $contents;
1067: $fh->close();
1068: return 1;
1069: } else {
1070: &warning("Unable to save file $file");
1071: return 0;
1072: }
1073: }
1074:
1075: sub createnewhtml {
1076: my $filecontents=(<<SIMPLECONTENT);
1077: <html>
1078: <head>
1079: <title>
1080: Title of Document Goes Here
1081: </title>
1082: </head>
1083: <body bgcolor="#FFFFFF">
1084:
1085: Body of Document Goes Here
1086:
1087: </body>
1088: </html>
1089: SIMPLECONTENT
1090: return $filecontents;
1091: }
1092:
1093: sub createnewsty {
1094: my $filecontents=(<<SIMPLECONTENT);
1095: <definetag name="">
1096: <render>
1097: <web></web>
1098: <tex></tex>
1099: </render>
1100: </definetag>
1101: SIMPLECONTENT
1102: return $filecontents;
1103: }
1104:
1105:
1106: sub inserteditinfo {
1107: my ($result,$filecontents,$filetype)=@_;
1108: $filecontents = &HTML::Entities::encode($filecontents);
1109: # my $editheader='<a href="#editsection">Edit below</a><hr />';
1110: my $xml_help = '';
1111: if ($filetype eq 'html') {
1112: $xml_help=Apache::loncommon::helpLatexCheatsheet();
1113: }
1114: my $cleanbut = '';
1115: if ($filetype eq 'html') {
1116: $cleanbut='<input type="submit" name="attemptclean" value="'.
1117: &mt('Save and then attempt to clean HTML').'" />';
1118: }
1119: my $titledisplay=&display_title();
1120: my %lt=&Apache::lonlocal::texthash('st' => 'Save this',
1121: 'vi' => 'View',
1122: 'ed' => 'Edit');
1123: my $buttons=(<<BUTTONS);
1124: $cleanbut
1125: <input type="submit" name="savethisfile" value="$lt{'st'}" />
1126: <input type="submit" name="viewmode" value="$lt{'vi'}" />
1127: BUTTONS
1128: my $editfooter=(<<ENDFOOTER);
1129: <hr />
1130: <a name="editsection" />
1131: <form method="post">
1132: $xml_help
1133: <input type="hidden" name="editmode" value="$lt{'ed'}" />
1134: $buttons<br />
1135: <textarea cols="80" rows="40" name="filecont">$filecontents</textarea>
1136: <br />$buttons
1137: <br />
1138: </form>
1139: $titledisplay
1140: ENDFOOTER
1141: # $result=~s/(\<body[^\>]*\>)/$1$editheader/is;
1142: $result=~s/(\<\/body\>)/$editfooter/is;
1143: return $result;
1144: }
1145:
1146: sub get_target {
1147: my $viewgrades=&Apache::lonnet::allowed('vgr',$ENV{'request.course.id'});
1148: if ( $ENV{'request.state'} eq 'published') {
1149: if ( defined($ENV{'form.grade_target'})
1150: && ($viewgrades == 'F' )) {
1151: return ($ENV{'form.grade_target'});
1152: } elsif (defined($ENV{'form.grade_target'})) {
1153: if (($ENV{'form.grade_target'} eq 'web') ||
1154: ($ENV{'form.grade_target'} eq 'tex') ) {
1155: return $ENV{'form.grade_target'}
1156: } else {
1157: return 'web';
1158: }
1159: } else {
1160: return 'web';
1161: }
1162: } elsif ($ENV{'request.state'} eq 'construct') {
1163: if ( defined($ENV{'form.grade_target'})) {
1164: return ($ENV{'form.grade_target'});
1165: } else {
1166: return 'web';
1167: }
1168: } else {
1169: return 'web';
1170: }
1171: }
1172:
1173: sub handler {
1174: my $request=shift;
1175:
1176: my $target=&get_target();
1177:
1178: $Apache::lonxml::debug=$ENV{'user.debug'};
1179:
1180: if ($ENV{'browser.mathml'}) {
1181: &Apache::loncommon::content_type($request,'text/xml');
1182: } else {
1183: &Apache::loncommon::content_type($request,'text/html');
1184: }
1185: &Apache::loncommon::no_cache($request);
1186: $request->send_http_header;
1187:
1188: return OK if $request->header_only;
1189:
1190:
1191: my $file=&Apache::lonnet::filelocation("",$request->uri);
1192: my $filetype;
1193: if ($file =~ /\.sty$/) {
1194: $filetype='sty';
1195: } else {
1196: $filetype='html';
1197: }
1198: #
1199: # Edit action? Save file.
1200: #
1201: unless ($ENV{'request.state'} eq 'published') {
1202: if (($ENV{'form.savethisfile'}) || ($ENV{'form.attemptclean'})) {
1203: if (&storefile($file,$ENV{'form.filecont'})) {
1204: $request->print("<font COLOR=\"#0000FF\">".&mt('Updated').": ".
1205: &Apache::lonlocal::locallocaltime(time)." </font>");
1206: }
1207: }
1208: }
1209: my %mystyle;
1210: my $result = '';
1211: my $filecontents=&Apache::lonnet::getfile($file);
1212: if ($filecontents eq -1) {
1213: my $bodytag=&Apache::loncommon::bodytag('File Error');
1214: my $fnf=&mt('File not found');
1215: $result=(<<ENDNOTFOUND);
1216: <html>
1217: <head>
1218: <title>$fnf</title>
1219: </head>
1220: $bodytag
1221: <b>$fnf: $file</b>
1222: </body>
1223: </html>
1224: ENDNOTFOUND
1225: $filecontents='';
1226: if ($ENV{'request.state'} ne 'published') {
1227: if ($filetype eq 'sty') {
1228: $filecontents=&createnewsty();
1229: } else {
1230: $filecontents=&createnewhtml();
1231: }
1232: $ENV{'form.editmode'}='Edit'; #force edit mode
1233: }
1234: } else {
1235: unless ($ENV{'request.state'} eq 'published') {
1236: if ($ENV{'form.attemptclean'}) {
1237: $filecontents=&htmlclean($filecontents,1);
1238: }
1239: #
1240: # we are in construction space, see if edit mode forced
1241: &Apache::loncommon::get_unprocessed_cgi
1242: ($ENV{'QUERY_STRING'},['editmode']);
1243: }
1244: if (!$ENV{'form.editmode'} || $ENV{'form.viewmode'}) {
1245: $result = &Apache::lonxml::xmlparse($request,$target,$filecontents,
1246: '',%mystyle);
1247: }
1248: }
1249:
1250: #
1251: # Edit action? Insert editing commands
1252: #
1253: unless ($ENV{'request.state'} eq 'published') {
1254: if ($ENV{'form.editmode'} && (!($ENV{'form.viewmode'}))) {
1255: my $displayfile=$request->uri;
1256: $displayfile=~s/^\/[^\/]*//;
1257: $result='<html><body bgcolor="#FFFFFF"><h3>'.$displayfile.
1258: '</h3></body></html>';
1259: $result=&inserteditinfo($result,$filecontents,$filetype);
1260: }
1261: }
1262: if ($filetype eq 'html') { writeallows($request->uri); }
1263:
1264:
1265:
1266: $request->print($result);
1267:
1268: return OK;
1269: }
1270:
1271: sub display_title {
1272: my $result;
1273: if ($ENV{'request.state'} eq 'construct') {
1274: my $title=&Apache::lonnet::gettitle();
1275: if (!defined($title) || $title eq '') {
1276: $title = $ENV{'request.filename'};
1277: $title = substr($title, rindex($title, '/') + 1);
1278: }
1279: $result = "<script type='text/javascript'>top.document.title = '$title - LON-CAPA Construction Space';</script>";
1280: }
1281: return $result;
1282: }
1283:
1284: sub debug {
1285: if ($Apache::lonxml::debug eq 1) {
1286: $|=1;
1287: print('<font size="-2"<pre>DEBUG:'.&HTML::Entities::encode($_[0])."</pre></font>\n");
1288: }
1289: }
1290:
1291: sub error {
1292: $errorcount++;
1293: if (($Apache::lonxml::debug eq 1) || ($ENV{'request.state'} eq 'construct') ) {
1294: # If printing in construction space, put the error inside <pre></pre>
1295: print "<b>ERROR:</b>".join("\n",@_)."\n";
1296: } else {
1297: print "<b>An Error occured while processing this resource. The instructor has been notified.</b> <br />";
1298: #notify author
1299: &Apache::lonmsg::author_res_msg($ENV{'request.filename'},join('<br />',@_));
1300: #notify course
1301: if ( $ENV{'request.course.id'} ) {
1302: my (undef,%users)=&Apache::lonfeedback::decide_receiver(undef,0,1,1,1);
1303: my $declutter=&Apache::lonnet::declutter($ENV{'request.filename'});
1304: foreach (keys %users) {
1305: my ($user,$domain) = split(/:/, $_);
1306: &Apache::lonmsg::user_normal_msg($user,$domain,
1307: "Error [$declutter]",join('<br />',@_));
1308: }
1309: }
1310:
1311: #FIXME probably shouldn't have me get everything forever.
1312: &Apache::lonmsg::user_normal_msg('albertel','msu',"Error in $ENV{'request.filename'}",join('<br />',@_));
1313: #&Apache::lonmsg::user_normal_msg('albertel','103',"Error in $ENV{'request.filename'}",$_[0]);
1314: }
1315: }
1316:
1317: sub warning {
1318: $warningcount++;
1319:
1320: if ($ENV{'form.grade_target'} ne 'tex') {
1321: if ($ENV{'request.state'} eq 'construct' || $Apache::lonxml::debug) {
1322: print "<b>W</b>ARNING<b>:</b>".join('<br />',@_)."<br />\n";
1323: }
1324: }
1325: }
1326:
1327: sub get_param {
1328: my ($param,$parstack,$safeeval,$context,$case_insensitive) = @_;
1329: if ( ! $context ) { $context = -1; }
1330: my $args ='';
1331: if ( $#$parstack > (-2-$context) ) { $args=$$parstack[$context]; }
1332: if ( ! $args ) { return undef; }
1333: if ( $case_insensitive ) {
1334: if ($args =~ s/(my \$)(\Q$param\E)(=\")/$1.lc($2).$3/ei) {
1335: return &Apache::run::run("{$args;".'return $'.$param.'}',
1336: $safeeval); #'
1337: } else {
1338: return undef;
1339: }
1340: } else {
1341: if ( $args =~ /my \$\Q$param\E=\"/ ) {
1342: return &Apache::run::run("{$args;".'return $'.$param.'}',
1343: $safeeval); #'
1344: } else {
1345: return undef;
1346: }
1347: }
1348: }
1349:
1350: sub get_param_var {
1351: my ($param,$parstack,$safeeval,$context,$case_insensitive) = @_;
1352: if ( ! $context ) { $context = -1; }
1353: my $args ='';
1354: if ( $#$parstack > (-2-$context) ) { $args=$$parstack[$context]; }
1355: &Apache::lonxml::debug("Args are $args param is $param");
1356: if ($case_insensitive) {
1357: if (! ($args=~s/(my \$)(\Q$param\E)(=\")/$1.lc($2).$3/ei)) {
1358: return undef;
1359: }
1360: } elsif ( $args !~ /my \$\Q$param\E=\"/ ) { return undef; }
1361: my $value=&Apache::run::run("{$args;".'return $'.$param.'}',$safeeval); #'
1362: &Apache::lonxml::debug("first run is $value");
1363: if ($value =~ /^[\$\@\%]\w+$/) {
1364: &Apache::lonxml::debug("doing second");
1365: my @result=&Apache::run::run("return $value",$safeeval,1);
1366: if (!defined($result[0])) {
1367: return $value
1368: } else {
1369: if (wantarray) { return @result; } else { return $result[0]; }
1370: }
1371: } else {
1372: return $value;
1373: }
1374: }
1375:
1376: sub register_insert {
1377: my @data = split /\n/, &Apache::lonnet::getfile('/home/httpd/lonTabs/insertlist.tab');
1378: my $i;
1379: my $tagnum=0;
1380: my @order;
1381: for ($i=0;$i < $#data; $i++) {
1382: my $line = $data[$i];
1383: if ( $line =~ /^\#/ || $line =~ /^\s*\n/) { next; }
1384: if ( $line =~ /TABLE/ ) { last; }
1385: my ($tag,$descrip,$color,$function,$show,$helpfile,$helpdesc) = split(/,/, $line);
1386: if ($tag) {
1387: $insertlist{"$tagnum.tag"} = $tag;
1388: $insertlist{"$tagnum.description"} = $descrip;
1389: $insertlist{"$tagnum.color"} = $color;
1390: $insertlist{"$tagnum.function"} = $function;
1391: if (!defined($show)) { $show='yes'; }
1392: $insertlist{"$tagnum.show"}= $show;
1393: $insertlist{"$tagnum.helpfile"} = $helpfile;
1394: $insertlist{"$tagnum.helpdesc"} = $helpdesc;
1395: $insertlist{"$tag.num"}=$tagnum;
1396: $tagnum++;
1397: }
1398: }
1399: $i++; #skipping TABLE line
1400: $tagnum = 0;
1401: for (;$i < $#data;$i++) {
1402: my $line = $data[$i];
1403: my ($mnemonic,@which) = split(/ +/,$line);
1404: my $tag = $insertlist{"$tagnum.tag"};
1405: for (my $j=0;$j <=$#which;$j++) {
1406: if ( $which[$j] eq 'Y' ) {
1407: if ($insertlist{"$j.show"} ne 'no') {
1408: push(@{ $insertlist{"$tag.which"} },$j);
1409: }
1410: }
1411: }
1412: $tagnum++;
1413: }
1414: }
1415:
1416: sub description {
1417: my ($token)=@_;
1418: my $tagnum;
1419: my $tag=$token->[1];
1420: foreach my $namespace (reverse @Apache::lonxml::namespace) {
1421: my $testtag=$namespace.'::'.$tag;
1422: $tagnum=$insertlist{"$testtag.num"};
1423: if (defined($tagnum)) { last; }
1424: }
1425: if (!defined ($tagnum)) { $tagnum=$Apache::lonxml::insertlist{"$tag.num"}; }
1426: return $insertlist{$tagnum.'.description'};
1427: }
1428:
1429: # Returns a list containing the help file, and the description
1430: sub helpinfo {
1431: my ($token)=@_;
1432: my $tagnum;
1433: my $tag=$token->[1];
1434: foreach my $namespace (reverse @Apache::lonxml::namespace) {
1435: my $testtag=$namespace.'::'.$tag;
1436: $tagnum=$insertlist{"$testtag.num"};
1437: if (defined($tagnum)) { last; }
1438: }
1439: if (!defined ($tagnum)) { $tagnum=$Apache::lonxml::insertlist{"$tag.num"}; }
1440: return ($insertlist{$tagnum.'.helpfile'}, $insertlist{$tagnum.'.helpdesc'});
1441: }
1442:
1443: # ----------------------------------------------------------------- whichuser
1444: # returns a list of $symb, $courseid, $domain, $name that is correct for
1445: # calls to lonnet functions for this setup.
1446: # - looks for form.grade_ parameters
1447: sub whichuser {
1448: my ($passedsymb)=@_;
1449: my ($symb,$courseid,$domain,$name,$publicuser);
1450: if (defined($ENV{'form.grade_symb'})) {
1451: my $tmp_courseid=$ENV{'form.grade_courseid'};
1452: my $allowed=&Apache::lonnet::allowed('vgr',$tmp_courseid);
1453: if ($allowed) {
1454: $symb=$ENV{'form.grade_symb'};
1455: $courseid=$ENV{'form.grade_courseid'};
1456: $domain=$ENV{'form.grade_domain'};
1457: $name=$ENV{'form.grade_username'};
1458: }
1459: } else {
1460: if (!$passedsymb) {
1461: $symb=&Apache::lonnet::symbread();
1462: } else {
1463: $symb=$passedsymb;
1464: }
1465: $courseid=$ENV{'request.course.id'};
1466: $domain=$ENV{'user.domain'};
1467: $name=$ENV{'user.name'};
1468: if ($name eq 'public' && $domain eq 'public') {
1469: if (!defined($ENV{'form.username'})) {
1470: $ENV{'form.username'}.=time.rand(10000000);
1471: }
1472: $name.=$ENV{'form.username'};
1473: }
1474: }
1475: return ($symb,$courseid,$domain,$name,$publicuser);
1476: }
1477:
1478: 1;
1479: __END__
1480:
1481:
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