File:
[LON-CAPA] /
loncom /
xml /
lonxml.pm
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1.302:
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Thu Feb 19 19:29:40 2004 UTC (20 years, 3 months ago) by
sakharuk
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MAIN
CVS tags:
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I fixed my own bug. When I added line allowing to print something like ###3 I
disallowed to print HTML entities (for example &$984;). Now all these possibilities are supported and can be printed.
1: # The LearningOnline Network with CAPA
2: # XML Parser Module
3: #
4: # $Id: lonxml.pm,v 1.302 2004/02/19 19:29:40 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: #a header message to emit in the case of any generated warning or errors
171: $Apache::lonxml::warnings_error_header='';
172:
173: sub xmlbegin {
174: my $output='';
175: if ($ENV{'browser.mathml'}) {
176: $output='<?xml version="1.0"?>'
177: .'<?xml-stylesheet type="text/css" href="/adm/MathML/mathml.css"?>'
178: .'<!DOCTYPE html SYSTEM "/adm/MathML/mathml.dtd" '
179: .'[<!ENTITY mathns "http://www.w3.org/1998/Math/MathML">]>'
180: .'<html xmlns:math="http://www.w3.org/1998/Math/MathML" '
181: .'xmlns="http://www.w3.org/TR/REC-html40">';
182: } else {
183: $output='<html>';
184: }
185: return $output;
186: }
187:
188: sub xmlend {
189: my $mode='xml';
190: my $status='OPEN';
191: if ($Apache::lonhomework::parsing_a_problem) {
192: $mode='problem';
193: $status=$Apache::inputtags::status[-1];
194: }
195: return &Apache::lonfeedback::list_discussion($mode,$status).'</html>';
196: }
197:
198: sub tokeninputfield {
199: my $defhost=$Apache::lonnet::perlvar{'lonHostID'};
200: $defhost=~tr/a-z/A-Z/;
201: return (<<ENDINPUTFIELD)
202: <script type="text/javascript">
203: function updatetoken() {
204: var comp=new Array;
205: var barcode=unescape(document.tokeninput.barcode.value);
206: comp=barcode.split('*');
207: if (typeof(comp[0])!="undefined") {
208: document.tokeninput.codeone.value=comp[0];
209: }
210: if (typeof(comp[1])!="undefined") {
211: document.tokeninput.codetwo.value=comp[1];
212: }
213: if (typeof(comp[2])!="undefined") {
214: comp[2]=comp[2].toUpperCase();
215: document.tokeninput.codethree.value=comp[2];
216: }
217: document.tokeninput.barcode.value='';
218: }
219: </script>
220: <form method="post" name="tokeninput">
221: <table border="2" bgcolor="#FFFFBB">
222: <tr><th>DocID Checkin</th></tr>
223: <tr><td>
224: <table>
225: <tr>
226: <td>Scan in Barcode</td>
227: <td><input type="text" size="22" name="barcode"
228: onChange="updatetoken()"/></td>
229: </tr>
230: <tr><td><i>or</i> Type in DocID</td>
231: <td>
232: <input type="text" size="5" name="codeone" />
233: <b><font size="+2">*</font></b>
234: <input type="text" size="5" name="codetwo" />
235: <b><font size="+2">*</font></b>
236: <input type="text" size="10" name="codethree" value="$defhost"
237: onChange="this.value=this.value.toUpperCase()" />
238: </td></tr>
239: </table>
240: </td></tr>
241: <tr><td><input type="submit" value="Check in DocID" /></td></tr>
242: </table>
243: </form>
244: ENDINPUTFIELD
245: }
246:
247: sub maketoken {
248: my ($symb,$tuname,$tudom,$tcrsid)=@_;
249: unless ($symb) {
250: $symb=&Apache::lonnet::symbread();
251: }
252: unless ($tuname) {
253: $tuname=$ENV{'user.name'};
254: $tudom=$ENV{'user.domain'};
255: $tcrsid=$ENV{'request.course.id'};
256: }
257:
258: return &Apache::lonnet::checkout($symb,$tuname,$tudom,$tcrsid);
259: }
260:
261: sub printtokenheader {
262: my ($target,$token,$tsymb,$tcrsid,$tudom,$tuname)=@_;
263: unless ($token) { return ''; }
264:
265: my ($symb,$courseid,$domain,$name) = &Apache::lonxml::whichuser();
266: unless ($tsymb) {
267: $tsymb=$symb;
268: }
269: unless ($tuname) {
270: $tuname=$name;
271: $tudom=$domain;
272: $tcrsid=$courseid;
273: }
274:
275: my %reply=&Apache::lonnet::get('environment',
276: ['firstname','middlename','lastname','generation'],
277: $tudom,$tuname);
278: my $plainname=$reply{'firstname'}.' '.
279: $reply{'middlename'}.' '.
280: $reply{'lastname'}.' '.
281: $reply{'generation'};
282:
283: if ($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 fontsettings() {
300: my $headerstring='';
301: if (($ENV{'browser.os'} eq 'mac') && (!$ENV{'browser.mathml'})) {
302: $headerstring.=
303: '<meta Content-Type="text/html; charset=x-mac-roman">';
304: } elsif (!$ENV{'browser.mathml'} && $ENV{'browser.unicode'}) {
305: $headerstring.=
306: '<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />';
307: }
308: return $headerstring;
309: }
310:
311: sub printalltags {
312: my $temp;
313: foreach $temp (sort keys %Apache::lonxml::alltags) {
314: &Apache::lonxml::debug("$temp -- ".
315: join(',',@{ $Apache::lonxml::alltags{$temp} }));
316: }
317: }
318:
319: sub xmlparse {
320: my ($request,$target,$content_file_string,$safeinit,%style_for_target) = @_;
321:
322: &setup_globals($request,$target);
323: &Apache::inputtags::initialize_inputtags();
324: &Apache::outputtags::initialize_outputtags();
325: &Apache::edit::initialize_edit();
326: &Apache::londefdef::initialize_londefdef();
327:
328: #
329: # do we have a course style file?
330: #
331:
332: if ($ENV{'request.course.id'} && $ENV{'request.state'} ne 'construct') {
333: my $bodytext=
334: $ENV{'course.'.$ENV{'request.course.id'}.'.default_xml_style'};
335: if ($bodytext) {
336: my $location=&Apache::lonnet::filelocation('',$bodytext);
337: my $styletext=&Apache::lonnet::getfile($location);
338: if ($styletext ne '-1') {
339: %style_for_target = (%style_for_target,
340: &Apache::style::styleparser($target,$styletext));
341: }
342: }
343: } elsif ($ENV{'construct.style'} && ($ENV{'request.state'} eq 'construct')) {
344: my $location=&Apache::lonnet::filelocation('',$ENV{'construct.style'});
345: my $styletext=&Apache::lonnet::getfile($location);
346: if ($styletext ne '-1') {
347: %style_for_target = (%style_for_target,
348: &Apache::style::styleparser($target,$styletext));
349: }
350: }
351: #&printalltags();
352: my @pars = ();
353: my $pwd=$ENV{'request.filename'};
354: $pwd =~ s:/[^/]*$::;
355: &newparser(\@pars,\$content_file_string,$pwd);
356:
357: my $safeeval = new Safe;
358: my $safehole = new Safe::Hole;
359: &init_safespace($target,$safeeval,$safehole,$safeinit);
360: #-------------------- Redefinition of the target in the case of compound target
361:
362: ($target, my @tenta) = split('&&',$target);
363:
364: my @stack = ();
365: my @parstack = ();
366: &initdepth;
367:
368: my $finaloutput = &inner_xmlparse($target,\@stack,\@parstack,\@pars,
369: $safeeval,\%style_for_target);
370:
371: if ($ENV{'request.uri'}) {
372: &writeallows($ENV{'request.uri'});
373: }
374: &do_registered_ssi();
375: if ($Apache::lonxml::counter_changed) { &store_counter() }
376: return $finaloutput;
377: }
378:
379: sub htmlclean {
380: my ($raw,$full)=@_;
381:
382: my $tree = HTML::TreeBuilder->new;
383: $tree->ignore_unknown(0);
384:
385: $tree->parse($raw);
386:
387: my $output= $tree->as_HTML(undef,' ');
388:
389: $output=~s/\<(br|hr|img|meta|allow)(.*?)\>/\<$1$2 \/\>/gis;
390: $output=~s/\<\/(br|hr|img|meta|allow)\>//gis;
391: unless ($full) {
392: $output=~s/\<[\/]*(body|head|html)\>//gis;
393: }
394:
395: $tree = $tree->delete;
396:
397: return $output;
398: }
399:
400: sub latex_special_symbols {
401: my ($string,$where)=@_;
402: if ($where eq 'header') {
403: $string =~ s/(\\|_|\^)/ /g;
404: $string =~ s/(\$|%|\#|&|\{|\})/\\$1/g;
405: $string =~ s/_/ /g;
406: } else {
407: $string=~s/\\ /\\char92 /g;
408: $string=~s/\^/\\\^\\strut /g;
409: $string=~s/\~/\\char126 /g;
410: #fixup & if it doesn't look like
411: # { or α
412: $string=~s/(&(?!((\#[0-9]+)|([a-z]+));))/\\$1/gi;
413: $string=~s/([^&\\])\#/$1\\#/g;
414: $string=~s/\#\#/\#\\#/g;
415: $string=~s/(\$|_|{|})/\\$1/g;
416: $string=~s/\\char92 /\\texttt{\\char92}/g;
417: $string=~s/(>|<)/\$$1\$/g; #more or less
418: if ($string=~m/\d%/) {$string =~ s/(\d)%/$1\\%/g;} #percent after digit
419: if ($string=~m/\s%/) {$string =~ s/(\s)%/$1\\%/g;} #percent after space
420: if ($string eq '%.') {$string = '\%.';} #percent at the end of statement
421: }
422: return $string;
423: }
424:
425: sub inner_xmlparse {
426: my ($target,$stack,$parstack,$pars,$safeeval,$style_for_target)=@_;
427: my $finaloutput = '';
428: my $result;
429: my $token;
430: my $dontpop=0;
431: while ( $#$pars > -1 ) {
432: while ($token = $$pars['-1']->get_token) {
433: if (($token->[0] eq 'T') || ($token->[0] eq 'C') ) {
434: if ($metamode<1) {
435: my $text=$token->[1];
436: if ($token->[0] eq 'C' && $target eq 'tex') {
437: $text = '';
438: # $text = '%'.$text."\n";
439: }
440: $result.=$text;
441: }
442: } elsif (($token->[0] eq 'D')) {
443: if ($metamode<1 && $target eq 'web') {
444: my $text=$token->[1];
445: $result.=$text;
446: }
447: } elsif ($token->[0] eq 'PI') {
448: if ($metamode<1 && $target eq 'web') {
449: $result=$token->[2];
450: }
451: } elsif ($token->[0] eq 'S') {
452: # add tag to stack
453: push (@$stack,$token->[1]);
454: # add parameters list to another stack
455: push (@$parstack,&parstring($token));
456: &increasedepth($token);
457: if ($Apache::lonxml::usestyle &&
458: exists($$style_for_target{$token->[1]})) {
459: $Apache::lonxml::usestyle=0;
460: my $string=$$style_for_target{$token->[1]}.
461: '<LONCAPA_INTERNAL_TURN_STYLE_ON />';
462: &Apache::lonxml::newparser($pars,\$string);
463: $Apache::lonxml::style_values=$$parstack[-1];
464: $Apache::lonxml::style_end_values=$$parstack[-1];
465: } else {
466: $result = &callsub("start_$token->[1]", $target, $token, $stack,
467: $parstack, $pars, $safeeval, $style_for_target);
468: }
469: } elsif ($token->[0] eq 'E') {
470: if ($Apache::lonxml::usestyle &&
471: exists($$style_for_target{'/'."$token->[1]"})) {
472: $Apache::lonxml::usestyle=0;
473: my $string=$$style_for_target{'/'.$token->[1]}.
474: '<LONCAPA_INTERNAL_TURN_STYLE_ON end="'.$token->[1].'" />';
475: &Apache::lonxml::newparser($pars,\$string);
476: $Apache::lonxml::style_values=$Apache::lonxml::style_end_values;
477: $Apache::lonxml::style_end_values='';
478: $dontpop=1;
479: } else {
480: #clear out any tags that didn't end
481: while ($token->[1] ne $$stack['-1'] && ($#$stack > -1)) {
482: my $lasttag=$$stack[-1];
483: if ($token->[1] =~ /^$lasttag$/i) {
484: &Apache::lonxml::warning('Using tag </'.$token->[1].'> on line '.$token->[3].' as end tag to <'.$$stack[-1].'>');
485: last;
486: } else {
487: &Apache::lonxml::warning('Found tag </'.$token->[1].'> on line '.$token->[3].' when looking for </'.$$stack[-1].'> in file');
488: &end_tag($stack,$parstack,$token);
489: }
490: }
491: $result = &callsub("end_$token->[1]", $target, $token, $stack,
492: $parstack, $pars,$safeeval, $style_for_target);
493: }
494: } else {
495: &Apache::lonxml::error("Unknown token event :$token->[0]:$token->[1]:");
496: }
497: #evaluate variable refs in result
498: if ($Apache::lonxml::post_evaluate &&$result ne "") {
499: my $extras;
500: if (!$Apache::lonxml::usestyle) {
501: $extras=$Apache::lonxml::style_values;
502: }
503: if ( $#$parstack > -1 ) {
504: $result=&Apache::run::evaluate($result,$safeeval,$extras.$$parstack[-1]);
505: } else {
506: $result= &Apache::run::evaluate($result,$safeeval,$extras);
507: }
508: }
509: $Apache::lonxml::post_evaluate=1;
510:
511: if (($token->[0] eq 'T') || ($token->[0] eq 'C') || ($token->[0] eq 'D') ) {
512: #Style file definitions should be correct
513: if ($target eq 'tex' && ($Apache::lonxml::usestyle)) {
514: $result=&latex_special_symbols($result);
515: }
516: }
517:
518: # Encode any high ASCII characters
519: # if (!$Apache::lonxml::prevent_entity_encode) {
520: # $result=&HTML::Entities::encode($result,"\200-\377");
521: # }
522: if ($Apache::lonxml::redirection) {
523: $Apache::lonxml::outputstack['-1'] .= $result;
524: } else {
525: $finaloutput.=$result;
526: }
527: $result = '';
528:
529: if ($token->[0] eq 'E' && !$dontpop) {
530: &end_tag($stack,$parstack,$token);
531: }
532: $dontpop=0;
533: }
534: if ($#$pars > -1) {
535: pop @$pars;
536: pop @Apache::lonxml::pwd;
537: }
538: }
539:
540: # if ($target eq 'meta') {
541: # $finaloutput.=&endredirection;
542: # }
543:
544:
545: if (($ENV{'QUERY_STRING'}) && ($target eq 'web')) {
546: $finaloutput=&afterburn($finaloutput);
547: }
548: return $finaloutput;
549: }
550:
551: sub callsub {
552: my ($sub,$target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
553: my $currentstring='';
554: my $nodefault;
555: {
556: my $sub1;
557: no strict 'refs';
558: my $tag=$token->[1];
559: # get utterly rid of extended html tags
560: if ($tag=~/^x\-/i) { return ''; }
561: my $space=$Apache::lonxml::alltags{$tag}[-1];
562: if (!$space) {
563: $tag=~tr/A-Z/a-z/;
564: $sub=~tr/A-Z/a-z/;
565: $space=$Apache::lonxml::alltags{$tag}[-1]
566: }
567:
568: my $deleted=0;
569: $Apache::lonxml::curdepth=join('_',@Apache::lonxml::depthcounter);
570: if (($token->[0] eq 'S') && ($target eq 'modified')) {
571: $deleted=&Apache::edit::handle_delete($space,$target,$token,$tagstack,
572: $parstack,$parser,$safeeval,
573: $style);
574: }
575: if (!$deleted) {
576: if ($space) {
577: #&Apache::lonxml::debug("Calling sub $sub in $space $metamode");
578: $sub1="$space\:\:$sub";
579: ($currentstring,$nodefault) = &$sub1($target,$token,$tagstack,
580: $parstack,$parser,$safeeval,
581: $style);
582: } else {
583: #&Apache::lonxml::debug("NOT Calling sub $sub in $space $metamode");
584: if ($metamode <1) {
585: if (defined($token->[4]) && ($metamode < 1)) {
586: $currentstring = $token->[4];
587: } else {
588: $currentstring = $token->[2];
589: }
590: }
591: }
592: # &Apache::lonxml::debug("nodefalt:$nodefault:");
593: if ($currentstring eq '' && $nodefault eq '') {
594: if ($target eq 'edit') {
595: #&Apache::lonxml::debug("doing default edit for $token->[1]");
596: if ($token->[0] eq 'S') {
597: $currentstring = &Apache::edit::tag_start($target,$token);
598: } elsif ($token->[0] eq 'E') {
599: $currentstring = &Apache::edit::tag_end($target,$token);
600: }
601: } elsif ($target eq 'modified') {
602: if ($token->[0] eq 'S') {
603: $currentstring = $token->[4];
604: $currentstring.=&Apache::edit::handle_insert();
605: } elsif ($token->[0] eq 'E') {
606: $currentstring = $token->[2];
607: $currentstring.=&Apache::edit::handle_insertafter($token->[1]);
608: } else {
609: $currentstring = $token->[2];
610: }
611: }
612: }
613: }
614: use strict 'refs';
615: }
616: return $currentstring;
617: }
618:
619: sub setup_globals {
620: my ($request,$target)=@_;
621: $Apache::lonxml::request=$request;
622: $Apache::lonxml::registered = 0;
623: $errorcount=0;
624: $warningcount=0;
625: $Apache::lonxml::default_homework_loaded=0;
626: $Apache::lonxml::usestyle=1;
627: &init_counter();
628: @Apache::lonxml::pwd=();
629: @Apache::lonxml::extlinks=();
630: @Apache::lonxml::ssi_info=();
631: $Apache::lonxml::post_evaluate=1;
632: $Apache::lonxml::warnings_error_header='';
633: if ($target eq 'meta') {
634: $Apache::lonxml::redirection = 0;
635: $Apache::lonxml::metamode = 1;
636: $Apache::lonxml::evaluate = 1;
637: $Apache::lonxml::import = 0;
638: } elsif ($target eq 'answer') {
639: $Apache::lonxml::redirection = 0;
640: $Apache::lonxml::metamode = 1;
641: $Apache::lonxml::evaluate = 1;
642: $Apache::lonxml::import = 1;
643: } elsif ($target eq 'grade') {
644: &startredirection;
645: $Apache::lonxml::metamode = 0;
646: $Apache::lonxml::evaluate = 1;
647: $Apache::lonxml::import = 1;
648: } elsif ($target eq 'modified') {
649: $Apache::lonxml::redirection = 0;
650: $Apache::lonxml::metamode = 0;
651: $Apache::lonxml::evaluate = 0;
652: $Apache::lonxml::import = 0;
653: } elsif ($target eq 'edit') {
654: $Apache::lonxml::redirection = 0;
655: $Apache::lonxml::metamode = 0;
656: $Apache::lonxml::evaluate = 0;
657: $Apache::lonxml::import = 0;
658: } elsif ($target eq 'analyze') {
659: $Apache::lonxml::redirection = 0;
660: $Apache::lonxml::metamode = 0;
661: $Apache::lonxml::evaluate = 1;
662: $Apache::lonxml::import = 1;
663: } else {
664: $Apache::lonxml::redirection = 0;
665: $Apache::lonxml::metamode = 0;
666: $Apache::lonxml::evaluate = 1;
667: $Apache::lonxml::import = 1;
668: }
669: }
670:
671: sub init_safespace {
672: my ($target,$safeeval,$safehole,$safeinit) = @_;
673: $safeeval->permit("entereval");
674: $safeeval->permit(":base_math");
675: $safeeval->permit("sort");
676: $safeeval->permit("time");
677: $safeeval->deny(":base_io");
678: $safehole->wrap(\&Apache::scripttag::xmlparse,$safeeval,'&xmlparse');
679: $safehole->wrap(\&Apache::outputtags::multipart,$safeeval,'&multipart');
680: $safehole->wrap(\&Apache::lonnet::EXT,$safeeval,'&EXT');
681:
682: $safehole->wrap(\&Math::Cephes::asin,$safeeval,'&asin');
683: $safehole->wrap(\&Math::Cephes::acos,$safeeval,'&acos');
684: $safehole->wrap(\&Math::Cephes::atan,$safeeval,'&atan');
685: $safehole->wrap(\&Math::Cephes::sinh,$safeeval,'&sinh');
686: $safehole->wrap(\&Math::Cephes::cosh,$safeeval,'&cosh');
687: $safehole->wrap(\&Math::Cephes::tanh,$safeeval,'&tanh');
688: $safehole->wrap(\&Math::Cephes::asinh,$safeeval,'&asinh');
689: $safehole->wrap(\&Math::Cephes::acosh,$safeeval,'&acosh');
690: $safehole->wrap(\&Math::Cephes::atanh,$safeeval,'&atanh');
691: $safehole->wrap(\&Math::Cephes::erf,$safeeval,'&erf');
692: $safehole->wrap(\&Math::Cephes::erfc,$safeeval,'&erfc');
693: $safehole->wrap(\&Math::Cephes::j0,$safeeval,'&j0');
694: $safehole->wrap(\&Math::Cephes::j1,$safeeval,'&j1');
695: $safehole->wrap(\&Math::Cephes::jn,$safeeval,'&jn');
696: $safehole->wrap(\&Math::Cephes::jv,$safeeval,'&jv');
697: $safehole->wrap(\&Math::Cephes::y0,$safeeval,'&y0');
698: $safehole->wrap(\&Math::Cephes::y1,$safeeval,'&y1');
699: $safehole->wrap(\&Math::Cephes::yn,$safeeval,'&yn');
700: $safehole->wrap(\&Math::Cephes::yv,$safeeval,'&yv');
701:
702: $safehole->wrap(\&Math::Cephes::bdtr ,$safeeval,'&bdtr' );
703: $safehole->wrap(\&Math::Cephes::bdtrc ,$safeeval,'&bdtrc' );
704: $safehole->wrap(\&Math::Cephes::bdtri ,$safeeval,'&bdtri' );
705: $safehole->wrap(\&Math::Cephes::btdtr ,$safeeval,'&btdtr' );
706: $safehole->wrap(\&Math::Cephes::chdtr ,$safeeval,'&chdtr' );
707: $safehole->wrap(\&Math::Cephes::chdtrc,$safeeval,'&chdtrc');
708: $safehole->wrap(\&Math::Cephes::chdtri,$safeeval,'&chdtri');
709: $safehole->wrap(\&Math::Cephes::fdtr ,$safeeval,'&fdtr' );
710: $safehole->wrap(\&Math::Cephes::fdtrc ,$safeeval,'&fdtrc' );
711: $safehole->wrap(\&Math::Cephes::fdtri ,$safeeval,'&fdtri' );
712: $safehole->wrap(\&Math::Cephes::gdtr ,$safeeval,'&gdtr' );
713: $safehole->wrap(\&Math::Cephes::gdtrc ,$safeeval,'&gdtrc' );
714: $safehole->wrap(\&Math::Cephes::nbdtr ,$safeeval,'&nbdtr' );
715: $safehole->wrap(\&Math::Cephes::nbdtrc,$safeeval,'&nbdtrc');
716: $safehole->wrap(\&Math::Cephes::nbdtri,$safeeval,'&nbdtri');
717: $safehole->wrap(\&Math::Cephes::ndtr ,$safeeval,'&ndtr' );
718: $safehole->wrap(\&Math::Cephes::ndtri ,$safeeval,'&ndtri' );
719: $safehole->wrap(\&Math::Cephes::pdtr ,$safeeval,'&pdtr' );
720: $safehole->wrap(\&Math::Cephes::pdtrc ,$safeeval,'&pdtrc' );
721: $safehole->wrap(\&Math::Cephes::pdtri ,$safeeval,'&pdtri' );
722: $safehole->wrap(\&Math::Cephes::stdtr ,$safeeval,'&stdtr' );
723: $safehole->wrap(\&Math::Cephes::stdtri,$safeeval,'&stdtri');
724:
725: # $safehole->wrap(\&Math::Cephes::new_fract,$safeeval,'&new_fract');
726: # $safehole->wrap(\&Math::Cephes::radd,$safeeval,'&radd');
727: # $safehole->wrap(\&Math::Cephes::rsub,$safeeval,'&rsub');
728: # $safehole->wrap(\&Math::Cephes::rmul,$safeeval,'&rmul');
729: # $safehole->wrap(\&Math::Cephes::rdiv,$safeeval,'&rdiv');
730: # $safehole->wrap(\&Math::Cephes::euclid,$safeeval,'&euclid');
731:
732: $safehole->wrap(\&Math::Random::random_beta,$safeeval,'&math_random_beta');
733: $safehole->wrap(\&Math::Random::random_chi_square,$safeeval,'&math_random_chi_square');
734: $safehole->wrap(\&Math::Random::random_exponential,$safeeval,'&math_random_exponential');
735: $safehole->wrap(\&Math::Random::random_f,$safeeval,'&math_random_f');
736: $safehole->wrap(\&Math::Random::random_gamma,$safeeval,'&math_random_gamma');
737: $safehole->wrap(\&Math::Random::random_multivariate_normal,$safeeval,'&math_random_multivariate_normal');
738: $safehole->wrap(\&Math::Random::random_multinomial,$safeeval,'&math_random_multinomial');
739: $safehole->wrap(\&Math::Random::random_noncentral_chi_square,$safeeval,'&math_random_noncentral_chi_square');
740: $safehole->wrap(\&Math::Random::random_noncentral_f,$safeeval,'&math_random_noncentral_f');
741: $safehole->wrap(\&Math::Random::random_normal,$safeeval,'&math_random_normal');
742: $safehole->wrap(\&Math::Random::random_permutation,$safeeval,'&math_random_permutation');
743: $safehole->wrap(\&Math::Random::random_permuted_index,$safeeval,'&math_random_permuted_index');
744: $safehole->wrap(\&Math::Random::random_uniform,$safeeval,'&math_random_uniform');
745: $safehole->wrap(\&Math::Random::random_poisson,$safeeval,'&math_random_poisson');
746: $safehole->wrap(\&Math::Random::random_uniform_integer,$safeeval,'&math_random_uniform_integer');
747: $safehole->wrap(\&Math::Random::random_negative_binomial,$safeeval,'&math_random_negative_binomial');
748: $safehole->wrap(\&Math::Random::random_binomial,$safeeval,'&math_random_binomial');
749: $safehole->wrap(\&Math::Random::random_seed_from_phrase,$safeeval,'&random_seed_from_phrase');
750: $safehole->wrap(\&Math::Random::random_set_seed_from_phrase,$safeeval,'&random_set_seed_from_phrase');
751: $safehole->wrap(\&Math::Random::random_get_seed,$safeeval,'&random_get_seed');
752: $safehole->wrap(\&Math::Random::random_set_seed,$safeeval,'&random_set_seed');
753:
754: #need to inspect this class of ops
755: # $safeeval->deny(":base_orig");
756: $safeinit .= ';$external::target="'.$target.'";';
757: my $rndseed;
758: my ($symb,$courseid,$domain,$name) = &Apache::lonxml::whichuser();
759: $rndseed=&Apache::lonnet::rndseed($symb,$courseid,$domain,$name);
760: $safeinit .= ';$external::randomseed='.$rndseed.';';
761: &Apache::lonxml::debug("Setting rndseed to $rndseed");
762: &Apache::run::run($safeinit,$safeeval);
763: }
764:
765: sub default_homework_load {
766: my ($safeeval)=@_;
767: &Apache::lonxml::debug('Loading default_homework');
768: my $default=&Apache::lonnet::getfile('/home/httpd/html/res/adm/includes/default_homework.lcpm');
769: if ($default eq -1) {
770: &Apache::lonxml::error("<b>Unable to find <i>default_homework.lcpm</i></b>");
771: } else {
772: &Apache::run::run($default,$safeeval);
773: $Apache::lonxml::default_homework_loaded=1;
774: }
775: }
776:
777: sub startredirection {
778: $Apache::lonxml::redirection++;
779: push (@Apache::lonxml::outputstack, '');
780: }
781:
782: sub endredirection {
783: if (!$Apache::lonxml::redirection) {
784: &Apache::lonxml::error("Endredirection was called, before a startredirection, perhaps you have unbalanced tags. Some debuging information:".join ":",caller);
785: return '';
786: }
787: $Apache::lonxml::redirection--;
788: pop @Apache::lonxml::outputstack;
789: }
790:
791: sub end_tag {
792: my ($tagstack,$parstack,$token)=@_;
793: pop(@$tagstack);
794: pop(@$parstack);
795: &decreasedepth($token);
796: }
797:
798: sub initdepth {
799: @Apache::lonxml::depthcounter=();
800: $Apache::lonxml::depth=-1;
801: $Apache::lonxml::olddepth=-1;
802: }
803:
804: sub increasedepth {
805: my ($token) = @_;
806: $Apache::lonxml::depth++;
807: $Apache::lonxml::depthcounter[$Apache::lonxml::depth]++;
808: if ($Apache::lonxml::depthcounter[$Apache::lonxml::depth]==1) {
809: $Apache::lonxml::olddepth=$Apache::lonxml::depth;
810: }
811: my $curdepth=join('_',@Apache::lonxml::depthcounter);
812: &Apache::lonxml::debug("s $Apache::lonxml::depth : $Apache::lonxml::olddepth : $curdepth : $token->[1]\n");
813: #print "<br />s $Apache::lonxml::depth : $Apache::lonxml::olddepth : $curdepth : $token->[1]\n";
814: }
815:
816: sub decreasedepth {
817: my ($token) = @_;
818: $Apache::lonxml::depth--;
819: if ($Apache::lonxml::depth<$Apache::lonxml::olddepth-1) {
820: $#Apache::lonxml::depthcounter--;
821: $Apache::lonxml::olddepth=$Apache::lonxml::depth+1;
822: }
823: if ( $Apache::lonxml::depth < -1) {
824: &Apache::lonxml::warning(&mt("Missing tags, unable to properly run file."));
825: $Apache::lonxml::depth='-1';
826: }
827: my $curdepth=join('_',@Apache::lonxml::depthcounter);
828: &Apache::lonxml::debug("e $Apache::lonxml::depth : $Apache::lonxml::olddepth : $token->[1] : $curdepth\n");
829: #print "<br />e $Apache::lonxml::depth : $Apache::lonxml::olddepth : $token->[1] : $curdepth\n";
830: }
831:
832: sub get_all_text_unbalanced {
833: #there is a copy of this in lonpublisher.pm
834: my($tag,$pars)= @_;
835: my $token;
836: my $result='';
837: $tag='<'.$tag.'>';
838: while ($token = $$pars[-1]->get_token) {
839: if (($token->[0] eq 'T')||($token->[0] eq 'C')||($token->[0] eq 'D')) {
840: $result.=$token->[1];
841: } elsif ($token->[0] eq 'PI') {
842: $result.=$token->[2];
843: } elsif ($token->[0] eq 'S') {
844: $result.=$token->[4];
845: } elsif ($token->[0] eq 'E') {
846: $result.=$token->[2];
847: }
848: if ($result =~ /(.*)\Q$tag\E(.*)/s) {
849: &Apache::lonxml::debug('Got a winner with leftovers ::'.$2);
850: &Apache::lonxml::debug('Result is :'.$1);
851: $result=$1;
852: my $redo=$tag.$2;
853: &Apache::lonxml::newparser($pars,\$redo);
854: last;
855: }
856: }
857: return $result
858: }
859:
860: sub increment_counter {
861: my ($increment) = @_;
862: if (defined($increment) && $increment gt 0) {
863: $Apache::lonxml::counter+=$increment;
864: } else {
865: $Apache::lonxml::counter++;
866: }
867: $Apache::lonxml::counter_changed=1;
868: }
869:
870: sub init_counter {
871: if (defined($ENV{'form.counter'})) {
872: $Apache::lonxml::counter=$ENV{'form.counter'};
873: $Apache::lonxml::counter_changed=0;
874: } else {
875: $Apache::lonxml::counter=1;
876: $Apache::lonxml::counter_changed=1;
877: }
878: }
879:
880: sub store_counter {
881: &Apache::lonnet::appenv(('form.counter' => $Apache::lonxml::counter));
882: return '';
883: }
884:
885: sub get_all_text {
886: my($tag,$pars,$style)= @_;
887: my $gotfullstack=1;
888: if (ref($pars) ne 'ARRAY') {
889: $gotfullstack=0;
890: $pars=[$pars];
891: }
892: if (ref($style) ne 'HASH') {
893: $style={};
894: }
895: my $depth=0;
896: my $token;
897: my $result='';
898: if ( $tag =~ m:^/: ) {
899: my $tag=substr($tag,1);
900: #&Apache::lonxml::debug("have:$tag:");
901: my $top_empty=0;
902: while (($depth >=0) && ($#$pars > -1) && (!$top_empty)) {
903: while (($depth >=0) && ($token = $$pars[-1]->get_token)) {
904: #&Apache::lonxml::debug("e token:$token->[0]:$depth:$token->[1]:".$#$pars.":".$#Apache::lonxml::pwd);
905: if (($token->[0] eq 'T')||($token->[0] eq 'C')||($token->[0] eq 'D')) {
906: $result.=$token->[1];
907: } elsif ($token->[0] eq 'PI') {
908: $result.=$token->[2];
909: } elsif ($token->[0] eq 'S') {
910: if ($token->[1] =~ /^$tag$/i) { $depth++; }
911: if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_ON$/i) { $Apache::lonxml::usestyle=1; }
912: if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_OFF$/i) { $Apache::lonxml::usestyle=0; }
913: $result.=$token->[4];
914: } elsif ($token->[0] eq 'E') {
915: if ( $token->[1] =~ /^$tag$/i) { $depth--; }
916: #skip sending back the last end tag
917: if ($depth == 0 && exists($$style{'/'.$token->[1]}) && $Apache::lonxml::usestyle) {
918: my $string=
919: '<LONCAPA_INTERNAL_TURN_STYLE_OFF end="yes" />'.
920: $$style{'/'.$token->[1]}.
921: $token->[2].
922: '<LONCAPA_INTERNAL_TURN_STYLE_ON />';
923: &Apache::lonxml::newparser($pars,\$string);
924: #&Apache::lonxml::debug("reParsing $string");
925: next;
926: }
927: if ($depth > -1) {
928: $result.=$token->[2];
929: } else {
930: $$pars[-1]->unget_token($token);
931: }
932: }
933: }
934: if (($depth >=0) && ($#$pars == 0) ) { $top_empty=1; }
935: if (($depth >=0) && ($#$pars > 0) ) {
936: pop(@$pars);
937: pop(@Apache::lonxml::pwd);
938: }
939: }
940: if ($top_empty && $depth >= 0) {
941: #never found the end tag ran out of text, throw error send back blank
942: &error('Never found end tag for <'.$tag.
943: '> current string <pre>'.
944: &HTML::Entities::encode($result).
945: '</pre>');
946: if ($gotfullstack) {
947: my $newstring='</'.$tag.'>'.$result;
948: &Apache::lonxml::newparser($pars,\$newstring);
949: }
950: $result='';
951: }
952: } else {
953: while ($#$pars > -1) {
954: while ($token = $$pars[-1]->get_token) {
955: #&Apache::lonxml::debug("s token:$token->[0]:$depth:$token->[1]");
956: if (($token->[0] eq 'T')||($token->[0] eq 'C')||
957: ($token->[0] eq 'D')) {
958: $result.=$token->[1];
959: } elsif ($token->[0] eq 'PI') {
960: $result.=$token->[2];
961: } elsif ($token->[0] eq 'S') {
962: if ( $token->[1] =~ /^$tag$/i) {
963: $$pars[-1]->unget_token($token); last;
964: } else {
965: $result.=$token->[4];
966: }
967: if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_ON$/i) { $Apache::lonxml::usestyle=1; }
968: if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_OFF$/i) { $Apache::lonxml::usestyle=0; }
969: } elsif ($token->[0] eq 'E') {
970: $result.=$token->[2];
971: }
972: }
973: if (($#$pars > 0) ) {
974: pop(@$pars);
975: pop(@Apache::lonxml::pwd);
976: } else { last; }
977: }
978: }
979: #&Apache::lonxml::debug("Exit:$result:");
980: return $result
981: }
982:
983: sub newparser {
984: my ($parser,$contentref,$dir) = @_;
985: push (@$parser,HTML::LCParser->new($contentref));
986: $$parser['-1']->xml_mode('1');
987: if ( $dir eq '' ) {
988: push (@Apache::lonxml::pwd, $Apache::lonxml::pwd[$#Apache::lonxml::pwd]);
989: } else {
990: push (@Apache::lonxml::pwd, $dir);
991: }
992: }
993:
994: sub parstring {
995: my ($token) = @_;
996: my $temp='';
997: foreach (@{$token->[3]}) {
998: unless ($_=~/\W/) {
999: my $val=$token->[2]->{$_};
1000: $val =~ s/([\%\@\\\"\'])/\\$1/g;
1001: #if ($val =~ m/^[\%\@]/) { $val="\\".$val; }
1002: $temp .= "my \$$_=\"$val\";";
1003: }
1004: }
1005: return $temp;
1006: }
1007:
1008: sub writeallows {
1009: unless ($#extlinks>=0) { return; }
1010: my $thisurl='/res/'.&Apache::lonnet::declutter(shift);
1011: if ($ENV{'httpref.'.$thisurl}) {
1012: $thisurl=$ENV{'httpref.'.$thisurl};
1013: }
1014: my $thisdir=$thisurl;
1015: $thisdir=~s/\/[^\/]+$//;
1016: my %httpref=();
1017: foreach (@extlinks) {
1018: $httpref{'httpref.'.
1019: &Apache::lonnet::hreflocation($thisdir,$_)}=$thisurl;
1020: }
1021: @extlinks=();
1022: &Apache::lonnet::appenv(%httpref);
1023: }
1024:
1025: sub register_ssi {
1026: my ($url,%form)=@_;
1027: push (@Apache::lonxml::ssi_info,{'url'=>$url,'form'=>\%form});
1028: return '';
1029: }
1030:
1031: sub do_registered_ssi {
1032: foreach my $info (@Apache::lonxml::ssi_info) {
1033: my %form=%{ $info->{'form'}};
1034: my $url=$info->{'url'};
1035: &Apache::lonnet::ssi($url,%form);
1036: }
1037: }
1038: #
1039: # Afterburner handles anchors, highlights and links
1040: #
1041: sub afterburn {
1042: my $result=shift;
1043: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
1044: ['highlight','anchor','link']);
1045: if ($ENV{'form.highlight'}) {
1046: foreach (split(/\,/,$ENV{'form.highlight'})) {
1047: my $anchorname=$_;
1048: my $matchthis=$anchorname;
1049: $matchthis=~s/\_+/\\s\+/g;
1050: $result=~s/($matchthis)/\<font color=\"red\"\>$1\<\/font\>/gs;
1051: }
1052: }
1053: if ($ENV{'form.link'}) {
1054: foreach (split(/\,/,$ENV{'form.link'})) {
1055: my ($anchorname,$linkurl)=split(/\>/,$_);
1056: my $matchthis=$anchorname;
1057: $matchthis=~s/\_+/\\s\+/g;
1058: $result=~s/($matchthis)/\<a href=\"$linkurl\"\>$1\<\/a\>/gs;
1059: }
1060: }
1061: if ($ENV{'form.anchor'}) {
1062: my $anchorname=$ENV{'form.anchor'};
1063: my $matchthis=$anchorname;
1064: $matchthis=~s/\_+/\\s\+/g;
1065: $result=~s/($matchthis)/\<a name=\"$anchorname\"\>$1\<\/a\>/s;
1066: $result.=(<<"ENDSCRIPT");
1067: <script type="text/javascript">
1068: document.location.hash='$anchorname';
1069: </script>
1070: ENDSCRIPT
1071: }
1072: return $result;
1073: }
1074:
1075: sub storefile {
1076: my ($file,$contents)=@_;
1077: &Apache::lonnet::correct_line_ends(\$contents);
1078: if (my $fh=Apache::File->new('>'.$file)) {
1079: print $fh $contents;
1080: $fh->close();
1081: return 1;
1082: } else {
1083: &warning("Unable to save file $file");
1084: return 0;
1085: }
1086: }
1087:
1088: sub createnewhtml {
1089: my $filecontents=(<<SIMPLECONTENT);
1090: <html>
1091: <head>
1092: <title>
1093: Title of Document Goes Here
1094: </title>
1095: </head>
1096: <body bgcolor="#FFFFFF">
1097:
1098: Body of Document Goes Here
1099:
1100: </body>
1101: </html>
1102: SIMPLECONTENT
1103: return $filecontents;
1104: }
1105:
1106: sub createnewsty {
1107: my $filecontents=(<<SIMPLECONTENT);
1108: <definetag name="">
1109: <render>
1110: <web></web>
1111: <tex></tex>
1112: </render>
1113: </definetag>
1114: SIMPLECONTENT
1115: return $filecontents;
1116: }
1117:
1118:
1119: sub inserteditinfo {
1120: my ($result,$filecontents,$filetype)=@_;
1121: $filecontents = &HTML::Entities::encode($filecontents);
1122: # my $editheader='<a href="#editsection">Edit below</a><hr />';
1123: my $xml_help = '';
1124: if ($filetype eq 'html') {
1125: $xml_help=Apache::loncommon::helpLatexCheatsheet();
1126: }
1127: my $cleanbut = '';
1128: if ($filetype eq 'html') {
1129: $cleanbut='<input type="submit" name="attemptclean" value="'.
1130: &mt('Save and then attempt to clean HTML').'" />';
1131: }
1132: my $titledisplay=&display_title();
1133: my %lt=&Apache::lonlocal::texthash('st' => 'Save this',
1134: 'vi' => 'View',
1135: 'ed' => 'Edit');
1136: my $buttons=(<<BUTTONS);
1137: $cleanbut
1138: <input type="submit" name="savethisfile" value="$lt{'st'}" />
1139: <input type="submit" name="viewmode" value="$lt{'vi'}" />
1140: BUTTONS
1141: my $editfooter=(<<ENDFOOTER);
1142: <hr />
1143: <a name="editsection" />
1144: <form method="post">
1145: $xml_help
1146: <input type="hidden" name="editmode" value="$lt{'ed'}" />
1147: $buttons<br />
1148: <textarea cols="80" rows="40" name="filecont">$filecontents</textarea>
1149: <br />$buttons
1150: <br />
1151: </form>
1152: $titledisplay
1153: ENDFOOTER
1154: # $result=~s/(\<body[^\>]*\>)/$1$editheader/is;
1155: $result=~s/(\<\/body\>)/$editfooter/is;
1156: return $result;
1157: }
1158:
1159: sub get_target {
1160: my $viewgrades=&Apache::lonnet::allowed('vgr',$ENV{'request.course.id'});
1161: if ( $ENV{'request.state'} eq 'published') {
1162: if ( defined($ENV{'form.grade_target'})
1163: && ($viewgrades == 'F' )) {
1164: return ($ENV{'form.grade_target'});
1165: } elsif (defined($ENV{'form.grade_target'})) {
1166: if (($ENV{'form.grade_target'} eq 'web') ||
1167: ($ENV{'form.grade_target'} eq 'tex') ) {
1168: return $ENV{'form.grade_target'}
1169: } else {
1170: return 'web';
1171: }
1172: } else {
1173: return 'web';
1174: }
1175: } elsif ($ENV{'request.state'} eq 'construct') {
1176: if ( defined($ENV{'form.grade_target'})) {
1177: return ($ENV{'form.grade_target'});
1178: } else {
1179: return 'web';
1180: }
1181: } else {
1182: return 'web';
1183: }
1184: }
1185:
1186: sub handler {
1187: my $request=shift;
1188:
1189: my $target=&get_target();
1190:
1191: $Apache::lonxml::debug=$ENV{'user.debug'};
1192:
1193: if ($ENV{'browser.mathml'}) {
1194: &Apache::loncommon::content_type($request,'text/xml');
1195: } else {
1196: &Apache::loncommon::content_type($request,'text/html');
1197: }
1198: &Apache::loncommon::no_cache($request);
1199: $request->send_http_header;
1200:
1201: return OK if $request->header_only;
1202:
1203:
1204: my $file=&Apache::lonnet::filelocation("",$request->uri);
1205: my $filetype;
1206: if ($file =~ /\.sty$/) {
1207: $filetype='sty';
1208: } else {
1209: $filetype='html';
1210: }
1211: #
1212: # Edit action? Save file.
1213: #
1214: unless ($ENV{'request.state'} eq 'published') {
1215: if (($ENV{'form.savethisfile'}) || ($ENV{'form.attemptclean'})) {
1216: if (&storefile($file,$ENV{'form.filecont'})) {
1217: $request->print("<font COLOR=\"#0000FF\">".&mt('Updated').": ".
1218: &Apache::lonlocal::locallocaltime(time)." </font>");
1219: }
1220: }
1221: }
1222: my %mystyle;
1223: my $result = '';
1224: my $filecontents=&Apache::lonnet::getfile($file);
1225: if ($filecontents eq -1) {
1226: my $bodytag=&Apache::loncommon::bodytag('File Error');
1227: my $fnf=&mt('File not found');
1228: $result=(<<ENDNOTFOUND);
1229: <html>
1230: <head>
1231: <title>$fnf</title>
1232: </head>
1233: $bodytag
1234: <b>$fnf: $file</b>
1235: </body>
1236: </html>
1237: ENDNOTFOUND
1238: $filecontents='';
1239: if ($ENV{'request.state'} ne 'published') {
1240: if ($filetype eq 'sty') {
1241: $filecontents=&createnewsty();
1242: } else {
1243: $filecontents=&createnewhtml();
1244: }
1245: $ENV{'form.editmode'}='Edit'; #force edit mode
1246: }
1247: } else {
1248: unless ($ENV{'request.state'} eq 'published') {
1249: if ($ENV{'form.attemptclean'}) {
1250: $filecontents=&htmlclean($filecontents,1);
1251: }
1252: #
1253: # we are in construction space, see if edit mode forced
1254: &Apache::loncommon::get_unprocessed_cgi
1255: ($ENV{'QUERY_STRING'},['editmode']);
1256: }
1257: if (!$ENV{'form.editmode'} || $ENV{'form.viewmode'}) {
1258: $result = &Apache::lonxml::xmlparse($request,$target,$filecontents,
1259: '',%mystyle);
1260: }
1261: }
1262:
1263: #
1264: # Edit action? Insert editing commands
1265: #
1266: unless ($ENV{'request.state'} eq 'published') {
1267: if ($ENV{'form.editmode'} && (!($ENV{'form.viewmode'}))) {
1268: my $displayfile=$request->uri;
1269: $displayfile=~s/^\/[^\/]*//;
1270: $result='<html><body bgcolor="#FFFFFF"><h3>'.$displayfile.
1271: '</h3></body></html>';
1272: $result=&inserteditinfo($result,$filecontents,$filetype);
1273: }
1274: }
1275: if ($filetype eq 'html') { writeallows($request->uri); }
1276:
1277:
1278:
1279: $request->print($result);
1280:
1281: return OK;
1282: }
1283:
1284: sub display_title {
1285: my $result;
1286: if ($ENV{'request.state'} eq 'construct') {
1287: my $title=&Apache::lonnet::gettitle();
1288: if (!defined($title) || $title eq '') {
1289: $title = $ENV{'request.filename'};
1290: $title = substr($title, rindex($title, '/') + 1);
1291: }
1292: $result = "<script type='text/javascript'>top.document.title = '$title - LON-CAPA Construction Space';</script>";
1293: }
1294: return $result;
1295: }
1296:
1297: sub debug {
1298: if ($Apache::lonxml::debug eq "1") {
1299: $|=1;
1300: my $request=$Apache::lonxml::request;
1301: if (!$request) { $request=Apache->request; }
1302: $request->print('<font size="-2"><pre>DEBUG:'.&HTML::Entities::encode($_[0])."</pre></font>\n");
1303: }
1304: }
1305:
1306: sub error {
1307: $errorcount++;
1308: my $request=$Apache::lonxml::request;
1309: if (!$request) { $request=Apache->request; }
1310: if (($Apache::lonxml::debug eq 1) || ($ENV{'request.state'} eq 'construct') ) {
1311: # If printing in construction space, put the error inside <pre></pre>
1312: $request->print($Apache::lonxml::warnings_error_header.
1313: "<b>ERROR:</b>".join("\n",@_)."\n");
1314: $Apache::lonxml::warnings_error_header='';
1315: } else {
1316: $request->print("<b>An Error occured while processing this resource. The instructor has been notified.</b> <br />");
1317: #notify author
1318: &Apache::lonmsg::author_res_msg($ENV{'request.filename'},join('<br />',@_));
1319: #notify course
1320: if ( $ENV{'request.course.id'} ) {
1321: my (undef,%users)=&Apache::lonfeedback::decide_receiver(undef,0,1,1,1);
1322: my $declutter=&Apache::lonnet::declutter($ENV{'request.filename'});
1323: foreach (keys %users) {
1324: my ($user,$domain) = split(/:/, $_);
1325: &Apache::lonmsg::user_normal_msg($user,$domain,
1326: "Error [$declutter]",join('<br />',@_));
1327: }
1328: }
1329:
1330: #FIXME probably shouldn't have me get everything forever.
1331: &Apache::lonmsg::user_normal_msg('albertel','msu',"Error in $ENV{'request.filename'}",join('<br />',@_));
1332: #&Apache::lonmsg::user_normal_msg('albertel','103',"Error in $ENV{'request.filename'}",$_[0]);
1333: }
1334: }
1335:
1336: sub warning {
1337: $warningcount++;
1338:
1339: if ($ENV{'form.grade_target'} ne 'tex') {
1340: if ($ENV{'request.state'} eq 'construct' || $Apache::lonxml::debug) {
1341: my $request=$Apache::lonxml::request;
1342: if (!$request) { $request=Apache->request; }
1343: $request->print($Apache::lonxml::warnings_error_header.
1344: "<b>W</b>ARNING<b>:</b>".join('<br />',@_)."<br />\n");
1345: $Apache::lonxml::warnings_error_header='';
1346: }
1347: }
1348: }
1349:
1350: sub get_param {
1351: my ($param,$parstack,$safeeval,$context,$case_insensitive) = @_;
1352: if ( ! $context ) { $context = -1; }
1353: my $args ='';
1354: if ( $#$parstack > (-2-$context) ) { $args=$$parstack[$context]; }
1355: if ( ! $Apache::lonxml::usestyle ) {
1356: $args=$Apache::lonxml::style_values.$args;
1357: }
1358: if ( ! $args ) { return undef; }
1359: if ( $case_insensitive ) {
1360: if ($args =~ s/(my \$)(\Q$param\E)(=\")/$1.lc($2).$3/ei) {
1361: return &Apache::run::run("{$args;".'return $'.$param.'}',
1362: $safeeval); #'
1363: } else {
1364: return undef;
1365: }
1366: } else {
1367: if ( $args =~ /my \$\Q$param\E=\"/ ) {
1368: return &Apache::run::run("{$args;".'return $'.$param.'}',
1369: $safeeval); #'
1370: } else {
1371: return undef;
1372: }
1373: }
1374: }
1375:
1376: sub get_param_var {
1377: my ($param,$parstack,$safeeval,$context,$case_insensitive) = @_;
1378: if ( ! $context ) { $context = -1; }
1379: my $args ='';
1380: if ( $#$parstack > (-2-$context) ) { $args=$$parstack[$context]; }
1381: if ( ! $Apache::lonxml::usestyle ) {
1382: $args=$Apache::lonxml::style_values.$args;
1383: }
1384: &Apache::lonxml::debug("Args are $args param is $param");
1385: if ($case_insensitive) {
1386: if (! ($args=~s/(my \$)(\Q$param\E)(=\")/$1.lc($2).$3/ei)) {
1387: return undef;
1388: }
1389: } elsif ( $args !~ /my \$\Q$param\E=\"/ ) { return undef; }
1390: my $value=&Apache::run::run("{$args;".'return $'.$param.'}',$safeeval); #'
1391: &Apache::lonxml::debug("first run is $value");
1392: if ($value =~ /^[\$\@\%]\w+$/) {
1393: &Apache::lonxml::debug("doing second");
1394: my @result=&Apache::run::run("return $value",$safeeval,1);
1395: if (!defined($result[0])) {
1396: return $value
1397: } else {
1398: if (wantarray) { return @result; } else { return $result[0]; }
1399: }
1400: } else {
1401: return $value;
1402: }
1403: }
1404:
1405: sub register_insert {
1406: my @data = split /\n/, &Apache::lonnet::getfile('/home/httpd/lonTabs/insertlist.tab');
1407: my $i;
1408: my $tagnum=0;
1409: my @order;
1410: for ($i=0;$i < $#data; $i++) {
1411: my $line = $data[$i];
1412: if ( $line =~ /^\#/ || $line =~ /^\s*\n/) { next; }
1413: if ( $line =~ /TABLE/ ) { last; }
1414: my ($tag,$descrip,$color,$function,$show,$helpfile,$helpdesc) = split(/,/, $line);
1415: if ($tag) {
1416: $insertlist{"$tagnum.tag"} = $tag;
1417: $insertlist{"$tagnum.description"} = $descrip;
1418: $insertlist{"$tagnum.color"} = $color;
1419: $insertlist{"$tagnum.function"} = $function;
1420: if (!defined($show)) { $show='yes'; }
1421: $insertlist{"$tagnum.show"}= $show;
1422: $insertlist{"$tagnum.helpfile"} = $helpfile;
1423: $insertlist{"$tagnum.helpdesc"} = $helpdesc;
1424: $insertlist{"$tag.num"}=$tagnum;
1425: $tagnum++;
1426: }
1427: }
1428: $i++; #skipping TABLE line
1429: $tagnum = 0;
1430: for (;$i < $#data;$i++) {
1431: my $line = $data[$i];
1432: my ($mnemonic,@which) = split(/ +/,$line);
1433: my $tag = $insertlist{"$tagnum.tag"};
1434: for (my $j=0;$j <=$#which;$j++) {
1435: if ( $which[$j] eq 'Y' ) {
1436: if ($insertlist{"$j.show"} ne 'no') {
1437: push(@{ $insertlist{"$tag.which"} },$j);
1438: }
1439: }
1440: }
1441: $tagnum++;
1442: }
1443: }
1444:
1445: sub description {
1446: my ($token)=@_;
1447: my $tagnum;
1448: my $tag=$token->[1];
1449: foreach my $namespace (reverse @Apache::lonxml::namespace) {
1450: my $testtag=$namespace.'::'.$tag;
1451: $tagnum=$insertlist{"$testtag.num"};
1452: if (defined($tagnum)) { last; }
1453: }
1454: if (!defined ($tagnum)) { $tagnum=$Apache::lonxml::insertlist{"$tag.num"}; }
1455: return $insertlist{$tagnum.'.description'};
1456: }
1457:
1458: # Returns a list containing the help file, and the description
1459: sub helpinfo {
1460: my ($token)=@_;
1461: my $tagnum;
1462: my $tag=$token->[1];
1463: foreach my $namespace (reverse @Apache::lonxml::namespace) {
1464: my $testtag=$namespace.'::'.$tag;
1465: $tagnum=$insertlist{"$testtag.num"};
1466: if (defined($tagnum)) { last; }
1467: }
1468: if (!defined ($tagnum)) { $tagnum=$Apache::lonxml::insertlist{"$tag.num"}; }
1469: return ($insertlist{$tagnum.'.helpfile'}, $insertlist{$tagnum.'.helpdesc'});
1470: }
1471:
1472: # ----------------------------------------------------------------- whichuser
1473: # returns a list of $symb, $courseid, $domain, $name that is correct for
1474: # calls to lonnet functions for this setup.
1475: # - looks for form.grade_ parameters
1476: sub whichuser {
1477: my ($passedsymb)=@_;
1478: my ($symb,$courseid,$domain,$name,$publicuser);
1479: if (defined($ENV{'form.grade_symb'})) {
1480: my $tmp_courseid=$ENV{'form.grade_courseid'};
1481: my $allowed=&Apache::lonnet::allowed('vgr',$tmp_courseid);
1482: if ($allowed) {
1483: $symb=$ENV{'form.grade_symb'};
1484: $courseid=$ENV{'form.grade_courseid'};
1485: $domain=$ENV{'form.grade_domain'};
1486: $name=$ENV{'form.grade_username'};
1487: }
1488: } else {
1489: if (!$passedsymb) {
1490: $symb=&Apache::lonnet::symbread();
1491: } else {
1492: $symb=$passedsymb;
1493: }
1494: $courseid=$ENV{'request.course.id'};
1495: $domain=$ENV{'user.domain'};
1496: $name=$ENV{'user.name'};
1497: if ($name eq 'public' && $domain eq 'public') {
1498: if (!defined($ENV{'form.username'})) {
1499: $ENV{'form.username'}.=time.rand(10000000);
1500: }
1501: $name.=$ENV{'form.username'};
1502: }
1503: }
1504: return ($symb,$courseid,$domain,$name,$publicuser);
1505: }
1506:
1507: 1;
1508: __END__
1509:
1510:
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