Annotation of loncom/xml/lonxml.pm, revision 1.330
1.2 sakharuk 1: # The LearningOnline Network with CAPA
1.3 sakharuk 2: # XML Parser Module
1.2 sakharuk 3: #
1.330 ! albertel 4: # $Id: lonxml.pm,v 1.329 2004/07/13 18:13:46 sakharuk Exp $
1.139 www 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: #
1.316 albertel 39:
1.2 sakharuk 40:
1.4 albertel 41: package Apache::lonxml;
1.33 www 42: use vars
1.320 www 43: qw(@pwd @outputstack $redirection $import @extlinks $metamode $evaluate %insertlist @namespace $errorcount $warningcount @htmlareafields);
1.1 sakharuk 44: use strict;
1.167 albertel 45: use HTML::LCParser();
1.161 albertel 46: use HTML::TreeBuilder();
47: use HTML::Entities();
48: use Safe();
49: use Safe::Hole();
50: use Math::Cephes();
51: use Math::Random();
52: use Opcode();
1.271 www 53: use POSIX qw(strftime);
1.72 albertel 54:
1.266 bowersj2 55:
1.72 albertel 56: sub register {
1.141 albertel 57: my ($space,@taglist) = @_;
58: foreach my $temptag (@taglist) {
59: push(@{ $Apache::lonxml::alltags{$temptag} },$space);
1.72 albertel 60: }
61: }
62:
1.141 albertel 63: sub deregister {
64: my ($space,@taglist) = @_;
65: foreach my $temptag (@taglist) {
66: my $tempspace = $Apache::lonxml::alltags{$temptag}[-1];
67: if ($tempspace eq $space) {
68: pop(@{ $Apache::lonxml::alltags{$temptag} });
69: }
70: }
1.142 albertel 71: #&printalltags();
1.141 albertel 72: }
73:
1.46 www 74: use Apache::Constants qw(:common);
1.161 albertel 75: use Apache::lontexconvert();
76: use Apache::style();
77: use Apache::run();
78: use Apache::londefdef();
79: use Apache::scripttag();
1.285 www 80: use Apache::languagetags();
1.161 albertel 81: use Apache::edit();
1.266 bowersj2 82: use Apache::inputtags();
83: use Apache::outputtags();
1.161 albertel 84: use Apache::lonnet();
85: use Apache::File();
86: use Apache::loncommon();
1.198 www 87: use Apache::lonfeedback();
1.200 www 88: use Apache::lonmsg();
1.217 matthew 89: use Apache::loncacc();
1.280 www 90: use Apache::lonlocal;
1.79 www 91:
1.72 albertel 92: #================================================== Main subroutine: xmlparse
93: #debugging control, to turn on debugging modify the correct handler
94: $Apache::lonxml::debug=0;
1.206 albertel 95:
96: # keeps count of the number of warnings and errors generated in a parse
97: $warningcount=0;
98: $errorcount=0;
1.72 albertel 99:
100: #path to the directory containing the file currently being processed
101: @pwd=();
102:
103: #these two are used for capturing a subset of the output for later processing,
104: #don't touch them directly use &startredirection and &endredirection
105: @outputstack = ();
106: $redirection = 0;
107:
108: #controls wheter the <import> tag actually does
109: $import = 1;
110: @extlinks=();
111:
112: # meta mode is a bit weird only some output is to be turned off
113: #<output> tag turns metamode off (defined in londefdef.pm)
114: $metamode = 0;
115:
116: # turns on and of run::evaluate actually derefencing var refs
117: $evaluate = 1;
1.7 albertel 118:
1.74 albertel 119: # data structure for eidt mode, determines what tags can go into what other tags
120: %insertlist=();
1.68 www 121:
1.99 albertel 122: # stores the list of active tag namespaces
1.76 albertel 123: @namespace=();
124:
1.99 albertel 125: # has the dynamic menu been updated to know about this resource
126: $Apache::lonxml::registered=0;
127:
1.172 albertel 128: # a pointer the the Apache request object
129: $Apache::lonxml::request='';
130:
1.216 sakharuk 131: # a problem number counter, and check on ether it is used
1.237 sakharuk 132: $Apache::lonxml::counter=1;
1.204 albertel 133: $Apache::lonxml::counter_changed=0;
134:
1.212 albertel 135: #internal check on whether to look at style defs
136: $Apache::lonxml::usestyle=1;
1.260 albertel 137:
138: #locations used to store the parameter string for style substitutions
139: $Apache::lonxml::style_values='';
140: $Apache::lonxml::style_end_values='';
1.212 albertel 141:
1.281 albertel 142: #array of ssi calls that need to occur after we are done parsing
143: @Apache::lonxml::ssi_info=();
144:
1.282 albertel 145: #should we do the postag variable interpolation
146: $Apache::lonxml::post_evaluate=1;
147:
1.295 albertel 148: #a header message to emit in the case of any generated warning or errors
149: $Apache::lonxml::warnings_error_header='';
150:
1.68 www 151: sub xmlbegin {
152: my $output='';
1.325 www 153: @htmlareafields=();
1.68 www 154: if ($ENV{'browser.mathml'}) {
155: $output='<?xml version="1.0"?>'
156: .'<?xml-stylesheet type="text/css" href="/adm/MathML/mathml.css"?>'
157: .'<!DOCTYPE html SYSTEM "/adm/MathML/mathml.dtd" '
158: .'[<!ENTITY mathns "http://www.w3.org/1998/Math/MathML">]>'
159: .'<html xmlns:math="http://www.w3.org/1998/Math/MathML" '
160: .'xmlns="http://www.w3.org/TR/REC-html40">';
161: } else {
162: $output='<html>';
163: }
164: return $output;
165: }
166:
167: sub xmlend {
1.278 www 168: my $mode='xml';
169: my $status='OPEN';
170: if ($Apache::lonhomework::parsing_a_problem) {
171: $mode='problem';
172: $status=$Apache::inputtags::status[-1];
173: }
1.298 albertel 174: return &Apache::lonfeedback::list_discussion($mode,$status).'</html>';
1.119 www 175: }
176:
177: sub tokeninputfield {
1.120 www 178: my $defhost=$Apache::lonnet::perlvar{'lonHostID'};
179: $defhost=~tr/a-z/A-Z/;
1.119 www 180: return (<<ENDINPUTFIELD)
1.226 albertel 181: <script type="text/javascript">
1.120 www 182: function updatetoken() {
183: var comp=new Array;
184: var barcode=unescape(document.tokeninput.barcode.value);
185: comp=barcode.split('*');
186: if (typeof(comp[0])!="undefined") {
187: document.tokeninput.codeone.value=comp[0];
188: }
189: if (typeof(comp[1])!="undefined") {
190: document.tokeninput.codetwo.value=comp[1];
191: }
192: if (typeof(comp[2])!="undefined") {
193: comp[2]=comp[2].toUpperCase();
194: document.tokeninput.codethree.value=comp[2];
195: }
196: document.tokeninput.barcode.value='';
197: }
198: </script>
199: <form method="post" name="tokeninput">
1.119 www 200: <table border="2" bgcolor="#FFFFBB">
201: <tr><th>DocID Checkin</th></tr>
202: <tr><td>
203: <table>
204: <tr>
205: <td>Scan in Barcode</td>
1.120 www 206: <td><input type="text" size="22" name="barcode"
207: onChange="updatetoken()"/></td>
1.119 www 208: </tr>
209: <tr><td><i>or</i> Type in DocID</td>
210: <td>
211: <input type="text" size="5" name="codeone" />
1.120 www 212: <b><font size="+2">*</font></b>
1.119 www 213: <input type="text" size="5" name="codetwo" />
1.120 www 214: <b><font size="+2">*</font></b>
215: <input type="text" size="10" name="codethree" value="$defhost"
216: onChange="this.value=this.value.toUpperCase()" />
1.119 www 217: </td></tr>
218: </table>
219: </td></tr>
220: <tr><td><input type="submit" value="Check in DocID" /></td></tr>
221: </table>
222: </form>
223: ENDINPUTFIELD
1.112 www 224: }
225:
1.116 www 226: sub maketoken {
1.118 www 227: my ($symb,$tuname,$tudom,$tcrsid)=@_;
1.112 www 228: unless ($symb) {
229: $symb=&Apache::lonnet::symbread();
230: }
231: unless ($tuname) {
232: $tuname=$ENV{'user.name'};
233: $tudom=$ENV{'user.domain'};
234: $tcrsid=$ENV{'request.course.id'};
235: }
1.116 www 236:
1.118 www 237: return &Apache::lonnet::checkout($symb,$tuname,$tudom,$tcrsid);
238: }
239:
240: sub printtokenheader {
1.133 albertel 241: my ($target,$token,$tsymb,$tcrsid,$tudom,$tuname)=@_;
1.116 www 242: unless ($token) { return ''; }
1.118 www 243:
1.133 albertel 244: my ($symb,$courseid,$domain,$name) = &Apache::lonxml::whichuser();
245: unless ($tsymb) {
246: $tsymb=$symb;
1.118 www 247: }
248: unless ($tuname) {
1.133 albertel 249: $tuname=$name;
250: $tudom=$domain;
251: $tcrsid=$courseid;
1.118 www 252: }
1.114 www 253:
254: my %reply=&Apache::lonnet::get('environment',
255: ['firstname','middlename','lastname','generation'],
256: $tudom,$tuname);
257: my $plainname=$reply{'firstname'}.' '.
258: $reply{'middlename'}.' '.
259: $reply{'lastname'}.' '.
260: $reply{'generation'};
261:
1.112 www 262: if ($target eq 'web') {
1.145 www 263: my %idhash=&Apache::lonnet::idrget($tudom,($tuname));
1.115 www 264: return
1.221 albertel 265: '<img align="right" src="/cgi-bin/barcode.png?encode='.$token.'" />'.
1.284 www 266: &mt('Checked out for').' '.$plainname.
267: '<br />'.&mt('User').': '.$tuname.' at '.$tudom.
268: '<br />'.&mt('ID').': '.$idhash{$tuname}.
269: '<br />'.&mt('CourseID').': '.$tcrsid.
270: '<br />'.&mt('Course').': '.$ENV{'course.'.$tcrsid.'.description'}.
271: '<br />'.&mt('DocID').': '.$token.
272: '<br />'.&mt('Time').': '.&Apache::lonlocal::locallocaltime().'<hr />';
1.112 www 273: } else {
1.121 albertel 274: return $token;
1.112 www 275: }
1.68 www 276: }
277:
1.70 www 278: sub fontsettings() {
279: my $headerstring='';
280: if (($ENV{'browser.os'} eq 'mac') && (!$ENV{'browser.mathml'})) {
1.248 albertel 281: $headerstring.=
282: '<meta Content-Type="text/html; charset=x-mac-roman">';
1.263 albertel 283: } elsif (!$ENV{'browser.mathml'} && $ENV{'browser.unicode'}) {
1.248 albertel 284: $headerstring.=
285: '<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />';
1.70 www 286: }
287: return $headerstring;
1.68 www 288: }
289:
1.48 albertel 290: sub printalltags {
291: my $temp;
292: foreach $temp (sort keys %Apache::lonxml::alltags) {
1.141 albertel 293: &Apache::lonxml::debug("$temp -- ".
294: join(',',@{ $Apache::lonxml::alltags{$temp} }));
1.48 albertel 295: }
296: }
1.31 sakharuk 297:
1.3 sakharuk 298: sub xmlparse {
1.172 albertel 299: my ($request,$target,$content_file_string,$safeinit,%style_for_target) = @_;
1.96 albertel 300:
1.172 albertel 301: &setup_globals($request,$target);
1.232 albertel 302: &Apache::inputtags::initialize_inputtags();
303: &Apache::outputtags::initialize_outputtags();
304: &Apache::edit::initialize_edit();
1.287 albertel 305: &Apache::londefdef::initialize_londefdef();
1.244 albertel 306:
1.178 www 307: #
308: # do we have a course style file?
309: #
310:
1.208 albertel 311: if ($ENV{'request.course.id'} && $ENV{'request.state'} ne 'construct') {
1.178 www 312: my $bodytext=
313: $ENV{'course.'.$ENV{'request.course.id'}.'.default_xml_style'};
314: if ($bodytext) {
315: my $location=&Apache::lonnet::filelocation('',$bodytext);
316: my $styletext=&Apache::lonnet::getfile($location);
317: if ($styletext ne '-1') {
318: %style_for_target = (%style_for_target,
319: &Apache::style::styleparser($target,$styletext));
320: }
321: }
1.292 sakharuk 322: } elsif ($ENV{'construct.style'} && ($ENV{'request.state'} eq 'construct')) {
323: my $location=&Apache::lonnet::filelocation('',$ENV{'construct.style'});
1.291 sakharuk 324: my $styletext=&Apache::lonnet::getfile($location);
325: if ($styletext ne '-1') {
326: %style_for_target = (%style_for_target,
327: &Apache::style::styleparser($target,$styletext));
328: }
1.178 www 329: }
1.255 sakharuk 330: #&printalltags();
1.16 albertel 331: my @pars = ();
1.23 albertel 332: my $pwd=$ENV{'request.filename'};
333: $pwd =~ s:/[^/]*$::;
334: &newparser(\@pars,\$content_file_string,$pwd);
1.24 sakharuk 335:
1.3 sakharuk 336: my $safeeval = new Safe;
1.40 albertel 337: my $safehole = new Safe::Hole;
1.82 ng 338: &init_safespace($target,$safeeval,$safehole,$safeinit);
1.3 sakharuk 339: #-------------------- Redefinition of the target in the case of compound target
340:
341: ($target, my @tenta) = split('&&',$target);
342:
1.150 albertel 343: my @stack = ();
1.3 sakharuk 344: my @parstack = ();
1.17 albertel 345: &initdepth;
1.67 www 346:
1.101 albertel 347: my $finaloutput = &inner_xmlparse($target,\@stack,\@parstack,\@pars,
348: $safeeval,\%style_for_target);
1.255 sakharuk 349:
1.125 www 350: if ($ENV{'request.uri'}) {
351: &writeallows($ENV{'request.uri'});
352: }
1.281 albertel 353: &do_registered_ssi();
1.204 albertel 354: if ($Apache::lonxml::counter_changed) { &store_counter() }
1.3 sakharuk 355: return $finaloutput;
1.106 www 356: }
357:
358: sub htmlclean {
1.107 www 359: my ($raw,$full)=@_;
1.106 www 360:
361: my $tree = HTML::TreeBuilder->new;
362: $tree->ignore_unknown(0);
1.140 albertel 363:
1.106 www 364: $tree->parse($raw);
365:
1.107 www 366: my $output= $tree->as_HTML(undef,' ');
1.140 albertel 367:
1.161 albertel 368: $output=~s/\<(br|hr|img|meta|allow)(.*?)\>/\<$1$2 \/\>/gis;
1.111 www 369: $output=~s/\<\/(br|hr|img|meta|allow)\>//gis;
1.107 www 370: unless ($full) {
371: $output=~s/\<[\/]*(body|head|html)\>//gis;
372: }
1.106 www 373:
374: $tree = $tree->delete;
375:
376: return $output;
1.15 albertel 377: }
378:
1.191 albertel 379: sub latex_special_symbols {
1.272 albertel 380: my ($string,$where)=@_;
1.235 sakharuk 381: if ($where eq 'header') {
1.272 albertel 382: $string =~ s/(\\|_|\^)/ /g;
1.311 albertel 383: $string =~ s/(\$|%|\{|\})/\\$1/g;
1.273 sakharuk 384: $string =~ s/_/ /g;
1.311 albertel 385: $string=&Apache::lonprintout::character_chart($string);
386: # any & or # leftover should be safe to just escape
387: $string=~s/([^\\])\&/$1\\\&/g;
388: $string=~s/([^\\])\#/$1\\\#/g;
1.229 sakharuk 389: } else {
1.312 albertel 390: $string=~s/\\/\\ensuremath{\\backslash}/g;
1.313 albertel 391: $string=~s/([^\\]|^)\%/$1\\\%/g;
1.329 sakharuk 392: $string=~s/([^\\]|^)\$/$1\\\$/g;
393: $string=~s/([^\\])\_/$1\\_/g;
1.310 sakharuk 394: $string=~s/\$\$/\$\\\$/g;
1.329 sakharuk 395: $string=~s/\_\_/\_\\\_/g;
1.310 sakharuk 396: $string=~s/\#\#/\#\\\#/g;
1.313 albertel 397: $string=~s/([^\\]|^)(\~|\^)/$1\\$2\\strut /g;
1.310 sakharuk 398: $string=~s/(>|<)/\\ensuremath\{$1\}/g; #more or less
1.311 albertel 399: $string=&Apache::lonprintout::character_chart($string);
400: # any & or # leftover should be safe to just escape
1.313 albertel 401: $string=~s/([^\\]|^)\&/$1\\\&/g;
402: $string=~s/([^\\]|^)\#/$1\\\#/g;
1.310 sakharuk 403: #single { or } How to escape?
1.229 sakharuk 404: }
1.272 albertel 405: return $string;
1.188 sakharuk 406: }
407:
1.101 albertel 408: sub inner_xmlparse {
409: my ($target,$stack,$parstack,$pars,$safeeval,$style_for_target)=@_;
410: my $finaloutput = '';
411: my $result;
412: my $token;
1.258 albertel 413: my $dontpop=0;
1.101 albertel 414: while ( $#$pars > -1 ) {
415: while ($token = $$pars['-1']->get_token) {
1.261 albertel 416: if (($token->[0] eq 'T') || ($token->[0] eq 'C') ) {
1.101 albertel 417: if ($metamode<1) {
1.190 albertel 418: my $text=$token->[1];
1.193 albertel 419: if ($token->[0] eq 'C' && $target eq 'tex') {
1.239 sakharuk 420: $text = '';
421: # $text = '%'.$text."\n";
1.182 sakharuk 422: }
1.190 albertel 423: $result.=$text;
1.101 albertel 424: }
1.261 albertel 425: } elsif (($token->[0] eq 'D')) {
426: if ($metamode<1 && $target eq 'web') {
427: my $text=$token->[1];
428: $result.=$text;
429: }
1.101 albertel 430: } elsif ($token->[0] eq 'PI') {
1.261 albertel 431: if ($metamode<1 && $target eq 'web') {
1.101 albertel 432: $result=$token->[2];
433: }
434: } elsif ($token->[0] eq 'S') {
1.140 albertel 435: # add tag to stack
1.101 albertel 436: push (@$stack,$token->[1]);
437: # add parameters list to another stack
438: push (@$parstack,&parstring($token));
1.140 albertel 439: &increasedepth($token);
1.212 albertel 440: if ($Apache::lonxml::usestyle &&
441: exists($$style_for_target{$token->[1]})) {
442: $Apache::lonxml::usestyle=0;
443: my $string=$$style_for_target{$token->[1]}.
444: '<LONCAPA_INTERNAL_TURN_STYLE_ON />';
445: &Apache::lonxml::newparser($pars,\$string);
1.257 albertel 446: $Apache::lonxml::style_values=$$parstack[-1];
1.259 albertel 447: $Apache::lonxml::style_end_values=$$parstack[-1];
1.101 albertel 448: } else {
449: $result = &callsub("start_$token->[1]", $target, $token, $stack,
450: $parstack, $pars, $safeeval, $style_for_target);
1.140 albertel 451: }
1.101 albertel 452: } elsif ($token->[0] eq 'E') {
1.212 albertel 453: if ($Apache::lonxml::usestyle &&
454: exists($$style_for_target{'/'."$token->[1]"})) {
455: $Apache::lonxml::usestyle=0;
456: my $string=$$style_for_target{'/'.$token->[1]}.
1.258 albertel 457: '<LONCAPA_INTERNAL_TURN_STYLE_ON end="'.$token->[1].'" />';
1.212 albertel 458: &Apache::lonxml::newparser($pars,\$string);
1.259 albertel 459: $Apache::lonxml::style_values=$Apache::lonxml::style_end_values;
460: $Apache::lonxml::style_end_values='';
1.258 albertel 461: $dontpop=1;
1.101 albertel 462: } else {
1.258 albertel 463: #clear out any tags that didn't end
464: while ($token->[1] ne $$stack['-1'] && ($#$stack > -1)) {
465: my $lasttag=$$stack[-1];
1.317 albertel 466: if ($token->[1] =~ /^\Q$lasttag\E$/i) {
1.258 albertel 467: &Apache::lonxml::warning('Using tag </'.$token->[1].'> on line '.$token->[3].' as end tag to <'.$$stack[-1].'>');
468: last;
469: } else {
470: &Apache::lonxml::warning('Found tag </'.$token->[1].'> on line '.$token->[3].' when looking for </'.$$stack[-1].'> in file');
471: &end_tag($stack,$parstack,$token);
472: }
473: }
474: $result = &callsub("end_$token->[1]", $target, $token, $stack,
475: $parstack, $pars,$safeeval, $style_for_target);
1.101 albertel 476: }
477: } else {
478: &Apache::lonxml::error("Unknown token event :$token->[0]:$token->[1]:");
479: }
480: #evaluate variable refs in result
1.282 albertel 481: if ($Apache::lonxml::post_evaluate &&$result ne "") {
1.257 albertel 482: my $extras;
483: if (!$Apache::lonxml::usestyle) {
484: $extras=$Apache::lonxml::style_values;
485: }
1.101 albertel 486: if ( $#$parstack > -1 ) {
1.257 albertel 487: $result=&Apache::run::evaluate($result,$safeeval,$extras.$$parstack[-1]);
1.101 albertel 488: } else {
1.257 albertel 489: $result= &Apache::run::evaluate($result,$safeeval,$extras);
1.101 albertel 490: }
1.163 albertel 491: }
1.282 albertel 492: $Apache::lonxml::post_evaluate=1;
493:
1.190 albertel 494: if (($token->[0] eq 'T') || ($token->[0] eq 'C') || ($token->[0] eq 'D') ) {
1.249 albertel 495: #Style file definitions should be correct
1.250 albertel 496: if ($target eq 'tex' && ($Apache::lonxml::usestyle)) {
1.311 albertel 497: $result=&latex_special_symbols($result);
1.249 albertel 498: }
1.190 albertel 499: }
500:
1.169 albertel 501: if ($Apache::lonxml::redirection) {
502: $Apache::lonxml::outputstack['-1'] .= $result;
503: } else {
504: $finaloutput.=$result;
505: }
506: $result = '';
507:
1.258 albertel 508: if ($token->[0] eq 'E' && !$dontpop) {
1.101 albertel 509: &end_tag($stack,$parstack,$token);
510: }
1.258 albertel 511: $dontpop=0;
1.224 albertel 512: }
1.212 albertel 513: if ($#$pars > -1) {
514: pop @$pars;
515: pop @Apache::lonxml::pwd;
516: }
1.101 albertel 517: }
518:
519: # if ($target eq 'meta') {
520: # $finaloutput.=&endredirection;
521: # }
522:
1.169 albertel 523:
1.101 albertel 524: if (($ENV{'QUERY_STRING'}) && ($target eq 'web')) {
525: $finaloutput=&afterburn($finaloutput);
1.216 sakharuk 526: }
1.101 albertel 527: return $finaloutput;
528: }
1.67 www 529:
1.318 matthew 530: ##
531: ## Looks to see if there is a subroutine defined for this tag. If so, call it,
532: ## otherwise do not call it as we do not know what it is.
533: ##
1.7 albertel 534: sub callsub {
1.84 albertel 535: my ($sub,$target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.7 albertel 536: my $currentstring='';
1.72 albertel 537: my $nodefault;
1.7 albertel 538: {
1.59 albertel 539: my $sub1;
1.7 albertel 540: no strict 'refs';
1.68 www 541: my $tag=$token->[1];
1.236 www 542: # get utterly rid of extended html tags
543: if ($tag=~/^x\-/i) { return ''; }
1.141 albertel 544: my $space=$Apache::lonxml::alltags{$tag}[-1];
1.68 www 545: if (!$space) {
1.141 albertel 546: $tag=~tr/A-Z/a-z/;
1.68 www 547: $sub=~tr/A-Z/a-z/;
1.141 albertel 548: $space=$Apache::lonxml::alltags{$tag}[-1]
1.68 www 549: }
1.97 albertel 550:
551: my $deleted=0;
552: $Apache::lonxml::curdepth=join('_',@Apache::lonxml::depthcounter);
553: if (($token->[0] eq 'S') && ($target eq 'modified')) {
554: $deleted=&Apache::edit::handle_delete($space,$target,$token,$tagstack,
555: $parstack,$parser,$safeeval,
556: $style);
557: }
558: if (!$deleted) {
559: if ($space) {
1.220 albertel 560: #&Apache::lonxml::debug("Calling sub $sub in $space $metamode");
1.97 albertel 561: $sub1="$space\:\:$sub";
562: ($currentstring,$nodefault) = &$sub1($target,$token,$tagstack,
563: $parstack,$parser,$safeeval,
564: $style);
565: } else {
1.318 matthew 566: if ($target eq 'tex') {
567: # throw away tag name
568: return '';
569: }
1.220 albertel 570: #&Apache::lonxml::debug("NOT Calling sub $sub in $space $metamode");
1.97 albertel 571: if ($metamode <1) {
572: if (defined($token->[4]) && ($metamode < 1)) {
573: $currentstring = $token->[4];
574: } else {
575: $currentstring = $token->[2];
576: }
1.62 sakharuk 577: }
1.7 albertel 578: }
1.97 albertel 579: # &Apache::lonxml::debug("nodefalt:$nodefault:");
580: if ($currentstring eq '' && $nodefault eq '') {
581: if ($target eq 'edit') {
1.220 albertel 582: #&Apache::lonxml::debug("doing default edit for $token->[1]");
1.97 albertel 583: if ($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: $currentstring.=&Apache::edit::handle_insert();
1.210 www 592: } elsif ($token->[0] eq 'E') {
593: $currentstring = $token->[2];
594: $currentstring.=&Apache::edit::handle_insertafter($token->[1]);
1.97 albertel 595: } else {
596: $currentstring = $token->[2];
597: }
1.72 albertel 598: }
599: }
1.7 albertel 600: }
601: use strict 'refs';
602: }
603: return $currentstring;
1.82 ng 604: }
605:
1.96 albertel 606: sub setup_globals {
1.172 albertel 607: my ($request,$target)=@_;
608: $Apache::lonxml::request=$request;
1.99 albertel 609: $Apache::lonxml::registered = 0;
1.325 www 610: @Apache::lonxml::htmlareafields=();
1.205 www 611: $errorcount=0;
612: $warningcount=0;
1.207 albertel 613: $Apache::lonxml::default_homework_loaded=0;
1.212 albertel 614: $Apache::lonxml::usestyle=1;
1.204 albertel 615: &init_counter();
1.101 albertel 616: @Apache::lonxml::pwd=();
1.124 albertel 617: @Apache::lonxml::extlinks=();
1.281 albertel 618: @Apache::lonxml::ssi_info=();
1.282 albertel 619: $Apache::lonxml::post_evaluate=1;
1.295 albertel 620: $Apache::lonxml::warnings_error_header='';
1.96 albertel 621: if ($target eq 'meta') {
622: $Apache::lonxml::redirection = 0;
623: $Apache::lonxml::metamode = 1;
624: $Apache::lonxml::evaluate = 1;
625: $Apache::lonxml::import = 0;
1.129 albertel 626: } elsif ($target eq 'answer') {
627: $Apache::lonxml::redirection = 0;
628: $Apache::lonxml::metamode = 1;
629: $Apache::lonxml::evaluate = 1;
630: $Apache::lonxml::import = 1;
1.96 albertel 631: } elsif ($target eq 'grade') {
632: &startredirection;
633: $Apache::lonxml::metamode = 0;
634: $Apache::lonxml::evaluate = 1;
635: $Apache::lonxml::import = 1;
636: } elsif ($target eq 'modified') {
637: $Apache::lonxml::redirection = 0;
638: $Apache::lonxml::metamode = 0;
639: $Apache::lonxml::evaluate = 0;
640: $Apache::lonxml::import = 0;
641: } elsif ($target eq 'edit') {
642: $Apache::lonxml::redirection = 0;
643: $Apache::lonxml::metamode = 0;
644: $Apache::lonxml::evaluate = 0;
645: $Apache::lonxml::import = 0;
1.163 albertel 646: } elsif ($target eq 'analyze') {
647: $Apache::lonxml::redirection = 0;
648: $Apache::lonxml::metamode = 0;
649: $Apache::lonxml::evaluate = 1;
650: $Apache::lonxml::import = 1;
1.96 albertel 651: } else {
652: $Apache::lonxml::redirection = 0;
653: $Apache::lonxml::metamode = 0;
654: $Apache::lonxml::evaluate = 1;
655: $Apache::lonxml::import = 1;
656: }
657: }
658:
1.82 ng 659: sub init_safespace {
660: my ($target,$safeeval,$safehole,$safeinit) = @_;
661: $safeeval->permit("entereval");
662: $safeeval->permit(":base_math");
663: $safeeval->permit("sort");
1.286 albertel 664: $safeeval->permit("time");
1.82 ng 665: $safeeval->deny(":base_io");
1.102 albertel 666: $safehole->wrap(\&Apache::scripttag::xmlparse,$safeeval,'&xmlparse');
1.251 albertel 667: $safehole->wrap(\&Apache::outputtags::multipart,$safeeval,'&multipart');
1.82 ng 668: $safehole->wrap(\&Apache::lonnet::EXT,$safeeval,'&EXT');
1.324 albertel 669: $safehole->wrap(\&Apache::chemresponse::chem_standard_order,$safeeval,
670: '&chem_standard_order');
671:
1.82 ng 672: $safehole->wrap(\&Math::Cephes::asin,$safeeval,'&asin');
673: $safehole->wrap(\&Math::Cephes::acos,$safeeval,'&acos');
674: $safehole->wrap(\&Math::Cephes::atan,$safeeval,'&atan');
675: $safehole->wrap(\&Math::Cephes::sinh,$safeeval,'&sinh');
676: $safehole->wrap(\&Math::Cephes::cosh,$safeeval,'&cosh');
677: $safehole->wrap(\&Math::Cephes::tanh,$safeeval,'&tanh');
678: $safehole->wrap(\&Math::Cephes::asinh,$safeeval,'&asinh');
679: $safehole->wrap(\&Math::Cephes::acosh,$safeeval,'&acosh');
680: $safehole->wrap(\&Math::Cephes::atanh,$safeeval,'&atanh');
681: $safehole->wrap(\&Math::Cephes::erf,$safeeval,'&erf');
682: $safehole->wrap(\&Math::Cephes::erfc,$safeeval,'&erfc');
683: $safehole->wrap(\&Math::Cephes::j0,$safeeval,'&j0');
684: $safehole->wrap(\&Math::Cephes::j1,$safeeval,'&j1');
685: $safehole->wrap(\&Math::Cephes::jn,$safeeval,'&jn');
686: $safehole->wrap(\&Math::Cephes::jv,$safeeval,'&jv');
687: $safehole->wrap(\&Math::Cephes::y0,$safeeval,'&y0');
688: $safehole->wrap(\&Math::Cephes::y1,$safeeval,'&y1');
689: $safehole->wrap(\&Math::Cephes::yn,$safeeval,'&yn');
690: $safehole->wrap(\&Math::Cephes::yv,$safeeval,'&yv');
1.215 albertel 691:
692: $safehole->wrap(\&Math::Cephes::bdtr ,$safeeval,'&bdtr' );
693: $safehole->wrap(\&Math::Cephes::bdtrc ,$safeeval,'&bdtrc' );
694: $safehole->wrap(\&Math::Cephes::bdtri ,$safeeval,'&bdtri' );
695: $safehole->wrap(\&Math::Cephes::btdtr ,$safeeval,'&btdtr' );
696: $safehole->wrap(\&Math::Cephes::chdtr ,$safeeval,'&chdtr' );
697: $safehole->wrap(\&Math::Cephes::chdtrc,$safeeval,'&chdtrc');
698: $safehole->wrap(\&Math::Cephes::chdtri,$safeeval,'&chdtri');
699: $safehole->wrap(\&Math::Cephes::fdtr ,$safeeval,'&fdtr' );
700: $safehole->wrap(\&Math::Cephes::fdtrc ,$safeeval,'&fdtrc' );
701: $safehole->wrap(\&Math::Cephes::fdtri ,$safeeval,'&fdtri' );
702: $safehole->wrap(\&Math::Cephes::gdtr ,$safeeval,'&gdtr' );
703: $safehole->wrap(\&Math::Cephes::gdtrc ,$safeeval,'&gdtrc' );
704: $safehole->wrap(\&Math::Cephes::nbdtr ,$safeeval,'&nbdtr' );
705: $safehole->wrap(\&Math::Cephes::nbdtrc,$safeeval,'&nbdtrc');
706: $safehole->wrap(\&Math::Cephes::nbdtri,$safeeval,'&nbdtri');
707: $safehole->wrap(\&Math::Cephes::ndtr ,$safeeval,'&ndtr' );
708: $safehole->wrap(\&Math::Cephes::ndtri ,$safeeval,'&ndtri' );
709: $safehole->wrap(\&Math::Cephes::pdtr ,$safeeval,'&pdtr' );
710: $safehole->wrap(\&Math::Cephes::pdtrc ,$safeeval,'&pdtrc' );
711: $safehole->wrap(\&Math::Cephes::pdtri ,$safeeval,'&pdtri' );
712: $safehole->wrap(\&Math::Cephes::stdtr ,$safeeval,'&stdtr' );
713: $safehole->wrap(\&Math::Cephes::stdtri,$safeeval,'&stdtri');
714:
715: # $safehole->wrap(\&Math::Cephes::new_fract,$safeeval,'&new_fract');
716: # $safehole->wrap(\&Math::Cephes::radd,$safeeval,'&radd');
717: # $safehole->wrap(\&Math::Cephes::rsub,$safeeval,'&rsub');
718: # $safehole->wrap(\&Math::Cephes::rmul,$safeeval,'&rmul');
719: # $safehole->wrap(\&Math::Cephes::rdiv,$safeeval,'&rdiv');
720: # $safehole->wrap(\&Math::Cephes::euclid,$safeeval,'&euclid');
721:
1.91 ng 722: $safehole->wrap(\&Math::Random::random_beta,$safeeval,'&math_random_beta');
723: $safehole->wrap(\&Math::Random::random_chi_square,$safeeval,'&math_random_chi_square');
724: $safehole->wrap(\&Math::Random::random_exponential,$safeeval,'&math_random_exponential');
725: $safehole->wrap(\&Math::Random::random_f,$safeeval,'&math_random_f');
726: $safehole->wrap(\&Math::Random::random_gamma,$safeeval,'&math_random_gamma');
727: $safehole->wrap(\&Math::Random::random_multivariate_normal,$safeeval,'&math_random_multivariate_normal');
728: $safehole->wrap(\&Math::Random::random_multinomial,$safeeval,'&math_random_multinomial');
729: $safehole->wrap(\&Math::Random::random_noncentral_chi_square,$safeeval,'&math_random_noncentral_chi_square');
730: $safehole->wrap(\&Math::Random::random_noncentral_f,$safeeval,'&math_random_noncentral_f');
731: $safehole->wrap(\&Math::Random::random_normal,$safeeval,'&math_random_normal');
732: $safehole->wrap(\&Math::Random::random_permutation,$safeeval,'&math_random_permutation');
1.93 ng 733: $safehole->wrap(\&Math::Random::random_permuted_index,$safeeval,'&math_random_permuted_index');
1.91 ng 734: $safehole->wrap(\&Math::Random::random_uniform,$safeeval,'&math_random_uniform');
735: $safehole->wrap(\&Math::Random::random_poisson,$safeeval,'&math_random_poisson');
736: $safehole->wrap(\&Math::Random::random_uniform_integer,$safeeval,'&math_random_uniform_integer');
737: $safehole->wrap(\&Math::Random::random_negative_binomial,$safeeval,'&math_random_negative_binomial');
738: $safehole->wrap(\&Math::Random::random_binomial,$safeeval,'&math_random_binomial');
739: $safehole->wrap(\&Math::Random::random_seed_from_phrase,$safeeval,'&random_seed_from_phrase');
740: $safehole->wrap(\&Math::Random::random_set_seed_from_phrase,$safeeval,'&random_set_seed_from_phrase');
741: $safehole->wrap(\&Math::Random::random_get_seed,$safeeval,'&random_get_seed');
742: $safehole->wrap(\&Math::Random::random_set_seed,$safeeval,'&random_set_seed');
1.305 albertel 743: $safehole->wrap(\&Apache::lonxml::error,$safeeval,'&LONCAPA_INTERNAL_ERROR');
1.311 albertel 744: $safehole->wrap(\&Apache::lonxml::debug,$safeeval,'&LONCAPA_INTERNAL_DEBUG');
1.322 albertel 745: $safehole->wrap(\&Apache::caparesponse::get_sigrange,$safeeval,'&LONCAPA_INTERNAL_get_sigrange');
1.91 ng 746:
1.82 ng 747: #need to inspect this class of ops
748: # $safeeval->deny(":base_orig");
1.91 ng 749: $safeinit .= ';$external::target="'.$target.'";';
1.121 albertel 750: my $rndseed;
1.123 albertel 751: my ($symb,$courseid,$domain,$name) = &Apache::lonxml::whichuser();
752: $rndseed=&Apache::lonnet::rndseed($symb,$courseid,$domain,$name);
1.319 albertel 753: $safeinit .= ';$external::randomseed="'.$rndseed.'";';
1.249 albertel 754: &Apache::lonxml::debug("Setting rndseed to $rndseed");
1.82 ng 755: &Apache::run::run($safeinit,$safeeval);
1.303 albertel 756:
1.207 albertel 757: }
758:
759: sub default_homework_load {
760: my ($safeeval)=@_;
761: &Apache::lonxml::debug('Loading default_homework');
762: my $default=&Apache::lonnet::getfile('/home/httpd/html/res/adm/includes/default_homework.lcpm');
1.241 albertel 763: if ($default eq -1) {
1.207 albertel 764: &Apache::lonxml::error("<b>Unable to find <i>default_homework.lcpm</i></b>");
765: } else {
766: &Apache::run::run($default,$safeeval);
767: $Apache::lonxml::default_homework_loaded=1;
768: }
1.17 albertel 769: }
770:
1.328 albertel 771: my $metamode_was;
1.55 albertel 772: sub startredirection {
1.328 albertel 773: if (!$Apache::lonxml::redirection) {
774: $metamode_was=$Apache::lonxml::metamode;
775: }
776: $Apache::lonxml::metamode=0;
777: $Apache::lonxml::redirection++;
778: push (@Apache::lonxml::outputstack, '');
1.55 albertel 779: }
780:
781: sub endredirection {
1.328 albertel 782: if (!$Apache::lonxml::redirection) {
783: &Apache::lonxml::error("Endredirection was called, before a startredirection, perhaps you have unbalanced tags. Some debuging information:".join ":",caller);
784: return '';
785: }
786: $Apache::lonxml::redirection--;
787: if (!$Apache::lonxml::redirection) {
788: $Apache::lonxml::metamode=$metamode_was;
789: }
790: pop @Apache::lonxml::outputstack;
1.97 albertel 791: }
792:
793: sub end_tag {
794: my ($tagstack,$parstack,$token)=@_;
795: pop(@$tagstack);
796: pop(@$parstack);
797: &decreasedepth($token);
1.55 albertel 798: }
799:
1.17 albertel 800: sub initdepth {
801: @Apache::lonxml::depthcounter=();
802: $Apache::lonxml::depth=-1;
803: $Apache::lonxml::olddepth=-1;
804: }
805:
806: sub increasedepth {
1.19 albertel 807: my ($token) = @_;
1.17 albertel 808: $Apache::lonxml::depth++;
809: $Apache::lonxml::depthcounter[$Apache::lonxml::depth]++;
810: if ($Apache::lonxml::depthcounter[$Apache::lonxml::depth]==1) {
811: $Apache::lonxml::olddepth=$Apache::lonxml::depth;
812: }
1.42 albertel 813: my $curdepth=join('_',@Apache::lonxml::depthcounter);
1.64 albertel 814: &Apache::lonxml::debug("s $Apache::lonxml::depth : $Apache::lonxml::olddepth : $curdepth : $token->[1]\n");
1.54 albertel 815: #print "<br />s $Apache::lonxml::depth : $Apache::lonxml::olddepth : $curdepth : $token->[1]\n";
1.17 albertel 816: }
817:
818: sub decreasedepth {
1.19 albertel 819: my ($token) = @_;
1.17 albertel 820: $Apache::lonxml::depth--;
1.36 albertel 821: if ($Apache::lonxml::depth<$Apache::lonxml::olddepth-1) {
822: $#Apache::lonxml::depthcounter--;
823: $Apache::lonxml::olddepth=$Apache::lonxml::depth+1;
824: }
1.43 albertel 825: if ( $Apache::lonxml::depth < -1) {
1.280 www 826: &Apache::lonxml::warning(&mt("Missing tags, unable to properly run file."));
1.43 albertel 827: $Apache::lonxml::depth='-1';
828: }
1.42 albertel 829: my $curdepth=join('_',@Apache::lonxml::depthcounter);
1.64 albertel 830: &Apache::lonxml::debug("e $Apache::lonxml::depth : $Apache::lonxml::olddepth : $token->[1] : $curdepth\n");
1.54 albertel 831: #print "<br />e $Apache::lonxml::depth : $Apache::lonxml::olddepth : $token->[1] : $curdepth\n";
1.1 sakharuk 832: }
1.19 albertel 833:
1.180 albertel 834: sub get_all_text_unbalanced {
1.190 albertel 835: #there is a copy of this in lonpublisher.pm
1.326 albertel 836: my($tag,$pars)= @_;
837: my $token;
838: my $result='';
839: $tag='<'.$tag.'>';
840: while ($token = $$pars[-1]->get_token) {
841: if (($token->[0] eq 'T')||($token->[0] eq 'C')||($token->[0] eq 'D')) {
842: $result.=$token->[1];
843: } elsif ($token->[0] eq 'PI') {
844: $result.=$token->[2];
845: } elsif ($token->[0] eq 'S') {
846: $result.=$token->[4];
847: } elsif ($token->[0] eq 'E') {
848: $result.=$token->[2];
849: }
850: if ($result =~ /\Q$tag\E/is) {
851: ($result,my $redo)=$result =~ /(.*)\Q$tag\E(.*)/is;
852: #&Apache::lonxml::debug('Got a winner with leftovers ::'.$2);
853: #&Apache::lonxml::debug('Result is :'.$1);
854: $redo=$tag.$redo;
855: &Apache::lonxml::newparser($pars,\$redo);
856: last;
857: }
858: }
859: return $result
1.204 albertel 860: }
861:
862: sub increment_counter {
1.247 albertel 863: my ($increment) = @_;
1.289 sakharuk 864: if (defined($increment) && $increment gt 0) {
865: $Apache::lonxml::counter+=$increment;
866: } else {
867: $Apache::lonxml::counter++;
1.247 albertel 868: }
1.289 sakharuk 869: $Apache::lonxml::counter_changed=1;
1.204 albertel 870: }
871:
872: sub init_counter {
873: if (defined($ENV{'form.counter'})) {
874: $Apache::lonxml::counter=$ENV{'form.counter'};
1.247 albertel 875: $Apache::lonxml::counter_changed=0;
1.237 sakharuk 876: } else {
1.204 albertel 877: $Apache::lonxml::counter=1;
1.247 albertel 878: $Apache::lonxml::counter_changed=1;
1.204 albertel 879: }
880: }
881:
882: sub store_counter {
883: &Apache::lonnet::appenv(('form.counter' => $Apache::lonxml::counter));
884: return '';
1.180 albertel 885: }
886:
1.19 albertel 887: sub get_all_text {
1.270 albertel 888: my($tag,$pars,$style)= @_;
889: my $gotfullstack=1;
890: if (ref($pars) ne 'ARRAY') {
891: $gotfullstack=0;
892: $pars=[$pars];
893: }
894: if (ref($style) ne 'HASH') {
895: $style={};
896: }
897: my $depth=0;
898: my $token;
899: my $result='';
900: if ( $tag =~ m:^/: ) {
901: my $tag=substr($tag,1);
902: #&Apache::lonxml::debug("have:$tag:");
903: my $top_empty=0;
904: while (($depth >=0) && ($#$pars > -1) && (!$top_empty)) {
905: while (($depth >=0) && ($token = $$pars[-1]->get_token)) {
906: #&Apache::lonxml::debug("e token:$token->[0]:$depth:$token->[1]:".$#$pars.":".$#Apache::lonxml::pwd);
907: if (($token->[0] eq 'T')||($token->[0] eq 'C')||($token->[0] eq 'D')) {
908: $result.=$token->[1];
909: } elsif ($token->[0] eq 'PI') {
910: $result.=$token->[2];
911: } elsif ($token->[0] eq 'S') {
1.316 albertel 912: if ($token->[1] =~ /^\Q$tag\E$/i) { $depth++; }
913: if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_ON$/) { $Apache::lonxml::usestyle=1; }
914: if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_OFF$/) { $Apache::lonxml::usestyle=0; }
1.270 albertel 915: $result.=$token->[4];
916: } elsif ($token->[0] eq 'E') {
1.316 albertel 917: if ( $token->[1] =~ /^\Q$tag\E$/i) { $depth--; }
1.270 albertel 918: #skip sending back the last end tag
1.283 albertel 919: if ($depth == 0 && exists($$style{'/'.$token->[1]}) && $Apache::lonxml::usestyle) {
1.270 albertel 920: my $string=
921: '<LONCAPA_INTERNAL_TURN_STYLE_OFF end="yes" />'.
922: $$style{'/'.$token->[1]}.
923: $token->[2].
924: '<LONCAPA_INTERNAL_TURN_STYLE_ON />';
925: &Apache::lonxml::newparser($pars,\$string);
926: #&Apache::lonxml::debug("reParsing $string");
927: next;
928: }
929: if ($depth > -1) {
930: $result.=$token->[2];
931: } else {
932: $$pars[-1]->unget_token($token);
933: }
934: }
935: }
936: if (($depth >=0) && ($#$pars == 0) ) { $top_empty=1; }
937: if (($depth >=0) && ($#$pars > 0) ) {
938: pop(@$pars);
939: pop(@Apache::lonxml::pwd);
940: }
941: }
942: if ($top_empty && $depth >= 0) {
943: #never found the end tag ran out of text, throw error send back blank
944: &error('Never found end tag for <'.$tag.
945: '> current string <pre>'.
1.314 albertel 946: &HTML::Entities::encode($result,'<>&"').
1.270 albertel 947: '</pre>');
948: if ($gotfullstack) {
949: my $newstring='</'.$tag.'>'.$result;
950: &Apache::lonxml::newparser($pars,\$newstring);
951: }
952: $result='';
953: }
954: } else {
955: while ($#$pars > -1) {
956: while ($token = $$pars[-1]->get_token) {
957: #&Apache::lonxml::debug("s token:$token->[0]:$depth:$token->[1]");
958: if (($token->[0] eq 'T')||($token->[0] eq 'C')||
959: ($token->[0] eq 'D')) {
960: $result.=$token->[1];
961: } elsif ($token->[0] eq 'PI') {
962: $result.=$token->[2];
963: } elsif ($token->[0] eq 'S') {
1.316 albertel 964: if ( $token->[1] =~ /^\Q$tag\E$/i) {
1.270 albertel 965: $$pars[-1]->unget_token($token); last;
966: } else {
967: $result.=$token->[4];
968: }
1.316 albertel 969: if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_ON$/) { $Apache::lonxml::usestyle=1; }
970: if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_OFF$/) { $Apache::lonxml::usestyle=0; }
1.270 albertel 971: } elsif ($token->[0] eq 'E') {
972: $result.=$token->[2];
973: }
974: }
975: if (($#$pars > 0) ) {
976: pop(@$pars);
977: pop(@Apache::lonxml::pwd);
978: } else { last; }
979: }
980: }
981: #&Apache::lonxml::debug("Exit:$result:");
982: return $result
1.19 albertel 983: }
984:
1.23 albertel 985: sub newparser {
986: my ($parser,$contentref,$dir) = @_;
1.167 albertel 987: push (@$parser,HTML::LCParser->new($contentref));
1.56 albertel 988: $$parser['-1']->xml_mode('1');
1.23 albertel 989: if ( $dir eq '' ) {
990: push (@Apache::lonxml::pwd, $Apache::lonxml::pwd[$#Apache::lonxml::pwd]);
991: } else {
992: push (@Apache::lonxml::pwd, $dir);
993: }
994: }
1.1 sakharuk 995:
1.8 albertel 996: sub parstring {
997: my ($token) = @_;
998: my $temp='';
1.142 albertel 999: foreach (@{$token->[3]}) {
1.35 www 1000: unless ($_=~/\W/) {
1.42 albertel 1001: my $val=$token->[2]->{$_};
1.231 albertel 1002: $val =~ s/([\%\@\\\"\'])/\\$1/g;
1.51 albertel 1003: #if ($val =~ m/^[\%\@]/) { $val="\\".$val; }
1.267 sakharuk 1004: $temp .= "my \$$_=\"$val\";";
1.20 albertel 1005: }
1.142 albertel 1006: }
1.8 albertel 1007: return $temp;
1008: }
1.22 albertel 1009:
1.34 www 1010: sub writeallows {
1.126 www 1011: unless ($#extlinks>=0) { return; }
1.34 www 1012: my $thisurl='/res/'.&Apache::lonnet::declutter(shift);
1.111 www 1013: if ($ENV{'httpref.'.$thisurl}) {
1014: $thisurl=$ENV{'httpref.'.$thisurl};
1015: }
1.34 www 1016: my $thisdir=$thisurl;
1017: $thisdir=~s/\/[^\/]+$//;
1018: my %httpref=();
1.142 albertel 1019: foreach (@extlinks) {
1.34 www 1020: $httpref{'httpref.'.
1.125 www 1021: &Apache::lonnet::hreflocation($thisdir,$_)}=$thisurl;
1.142 albertel 1022: }
1.126 www 1023: @extlinks=();
1.34 www 1024: &Apache::lonnet::appenv(%httpref);
1025: }
1026:
1.281 albertel 1027: sub register_ssi {
1028: my ($url,%form)=@_;
1029: push (@Apache::lonxml::ssi_info,{'url'=>$url,'form'=>\%form});
1030: return '';
1031: }
1032:
1033: sub do_registered_ssi {
1034: foreach my $info (@Apache::lonxml::ssi_info) {
1035: my %form=%{ $info->{'form'}};
1036: my $url=$info->{'url'};
1037: &Apache::lonnet::ssi($url,%form);
1038: }
1039: }
1.66 www 1040: #
1041: # Afterburner handles anchors, highlights and links
1042: #
1043: sub afterburn {
1044: my $result=shift;
1.154 albertel 1045: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
1046: ['highlight','anchor','link']);
1.66 www 1047: if ($ENV{'form.highlight'}) {
1.142 albertel 1048: foreach (split(/\,/,$ENV{'form.highlight'})) {
1.66 www 1049: my $anchorname=$_;
1050: my $matchthis=$anchorname;
1051: $matchthis=~s/\_+/\\s\+/g;
1.317 albertel 1052: $result=~s/(\Q$matchthis\E)/\<font color=\"red\"\>$1\<\/font\>/gs;
1.142 albertel 1053: }
1.66 www 1054: }
1055: if ($ENV{'form.link'}) {
1.142 albertel 1056: foreach (split(/\,/,$ENV{'form.link'})) {
1.66 www 1057: my ($anchorname,$linkurl)=split(/\>/,$_);
1058: my $matchthis=$anchorname;
1059: $matchthis=~s/\_+/\\s\+/g;
1.317 albertel 1060: $result=~s/(\Q$matchthis\E)/\<a href=\"$linkurl\"\>$1\<\/a\>/gs;
1.142 albertel 1061: }
1.66 www 1062: }
1063: if ($ENV{'form.anchor'}) {
1064: my $anchorname=$ENV{'form.anchor'};
1065: my $matchthis=$anchorname;
1066: $matchthis=~s/\_+/\\s\+/g;
1.317 albertel 1067: $result=~s/(\Q$matchthis\E)/\<a name=\"$anchorname\"\>$1\<\/a\>/s;
1.66 www 1068: $result.=(<<"ENDSCRIPT");
1.226 albertel 1069: <script type="text/javascript">
1.66 www 1070: document.location.hash='$anchorname';
1071: </script>
1072: ENDSCRIPT
1073: }
1074: return $result;
1075: }
1076:
1.79 www 1077: sub storefile {
1078: my ($file,$contents)=@_;
1.290 albertel 1079: &Apache::lonnet::correct_line_ends(\$contents);
1.79 www 1080: if (my $fh=Apache::File->new('>'.$file)) {
1081: print $fh $contents;
1082: $fh->close();
1.271 www 1083: return 1;
1.147 albertel 1084: } else {
1.271 www 1085: &warning("Unable to save file $file");
1086: return 0;
1.79 www 1087: }
1088: }
1089:
1.151 albertel 1090: sub createnewhtml {
1.321 www 1091: my $title=&mt('Title of document goes here');
1092: my $body=&mt('Body of document goes here');
1093: my $filecontents=(<<SIMPLECONTENT);
1094: <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml/11/DTD/xhtml11.dtd">
1.78 www 1095: <html>
1096: <head>
1.321 www 1097: <title>$title</title>
1.78 www 1098: </head>
1099: <body bgcolor="#FFFFFF">
1.321 www 1100: $body
1.78 www 1101: </body>
1102: </html>
1103: SIMPLECONTENT
1.321 www 1104: return $filecontents;
1.151 albertel 1105: }
1106:
1.274 albertel 1107: sub createnewsty {
1108: my $filecontents=(<<SIMPLECONTENT);
1109: <definetag name="">
1110: <render>
1111: <web></web>
1112: <tex></tex>
1113: </render>
1114: </definetag>
1115: SIMPLECONTENT
1116: return $filecontents;
1117: }
1118:
1.147 albertel 1119:
1.151 albertel 1120: sub inserteditinfo {
1.274 albertel 1121: my ($result,$filecontents,$filetype)=@_;
1.314 albertel 1122: $filecontents = &HTML::Entities::encode($filecontents,'<>&"');
1.147 albertel 1123: # my $editheader='<a href="#editsection">Edit below</a><hr />';
1.274 albertel 1124: my $xml_help = '';
1.321 www 1125: my $initialize='';
1.274 albertel 1126: if ($filetype eq 'html') {
1.323 www 1127: my $addbuttons=&Apache::lonhtmlcommon::htmlareaaddbuttons();
1.321 www 1128: $initialize=&Apache::lonhtmlcommon::htmlareaheaders().(<<FULLPAGE);
1129: <script type="text/javascript">
1.323 www 1130: $addbuttons
1131:
1.321 www 1132: HTMLArea.loadPlugin("FullPage");
1133:
1134: function initDocument() {
1.323 www 1135: var editor=new HTMLArea("filecont",config);
1.321 www 1136: editor.registerPlugin(FullPage);
1137: editor.generate();
1138: }
1139: </script>
1140: FULLPAGE
1141: $result=~s/\<body([^\>]*)\>/\<body onload="initDocument()" $1\>/i;
1142: $xml_help=&Apache::loncommon::helpLatexCheatsheet();
1.274 albertel 1143: }
1144: my $cleanbut = '';
1145: if ($filetype eq 'html') {
1.280 www 1146: $cleanbut='<input type="submit" name="attemptclean" value="'.
1147: &mt('Save and then attempt to clean HTML').'" />';
1.274 albertel 1148: }
1.254 albertel 1149: my $titledisplay=&display_title();
1.280 www 1150: my %lt=&Apache::lonlocal::texthash('st' => 'Save this',
1151: 'vi' => 'View',
1152: 'ed' => 'Edit');
1.161 albertel 1153: my $buttons=(<<BUTTONS);
1.274 albertel 1154: $cleanbut
1.304 matthew 1155: <input type="submit" name="savethisfile" accesskey="s" value="$lt{'st'}" />
1156: <input type="submit" name="viewmode" accesskey="v" value="$lt{'vi'}" />
1.161 albertel 1157: BUTTONS
1.78 www 1158: my $editfooter=(<<ENDFOOTER);
1.321 www 1159: $initialize
1.78 www 1160: <hr />
1161: <a name="editsection" />
1162: <form method="post">
1.240 albertel 1163: $xml_help
1.280 www 1164: <input type="hidden" name="editmode" value="$lt{'ed'}" />
1.170 www 1165: $buttons<br />
1.321 www 1166: <textarea cols="80" rows="44" name="filecont" id="filecont">$filecontents</textarea>
1.170 www 1167: <br />$buttons
1.78 www 1168: <br />
1169: </form>
1.254 albertel 1170: $titledisplay
1.321 www 1171: </body>
1.78 www 1172: ENDFOOTER
1.147 albertel 1173: # $result=~s/(\<body[^\>]*\>)/$1$editheader/is;
1.78 www 1174: $result=~s/(\<\/body\>)/$editfooter/is;
1175: return $result;
1176: }
1177:
1.152 albertel 1178: sub get_target {
1179: my $viewgrades=&Apache::lonnet::allowed('vgr',$ENV{'request.course.id'});
1180: if ( $ENV{'request.state'} eq 'published') {
1181: if ( defined($ENV{'form.grade_target'})
1182: && ($viewgrades == 'F' )) {
1183: return ($ENV{'form.grade_target'});
1.153 albertel 1184: } elsif (defined($ENV{'form.grade_target'})) {
1185: if (($ENV{'form.grade_target'} eq 'web') ||
1186: ($ENV{'form.grade_target'} eq 'tex') ) {
1187: return $ENV{'form.grade_target'}
1188: } else {
1189: return 'web';
1190: }
1.152 albertel 1191: } else {
1192: return 'web';
1193: }
1194: } elsif ($ENV{'request.state'} eq 'construct') {
1195: if ( defined($ENV{'form.grade_target'})) {
1196: return ($ENV{'form.grade_target'});
1197: } else {
1198: return 'web';
1199: }
1200: } else {
1201: return 'web';
1202: }
1203: }
1204:
1.24 sakharuk 1205: sub handler {
1.255 sakharuk 1206: my $request=shift;
1207:
1208: my $target=&get_target();
1209:
1.258 albertel 1210: $Apache::lonxml::debug=$ENV{'user.debug'};
1.255 sakharuk 1211:
1212: if ($ENV{'browser.mathml'}) {
1.280 www 1213: &Apache::loncommon::content_type($request,'text/xml');
1.255 sakharuk 1214: } else {
1.280 www 1215: &Apache::loncommon::content_type($request,'text/html');
1.255 sakharuk 1216: }
1217: &Apache::loncommon::no_cache($request);
1218: $request->send_http_header;
1219:
1220: return OK if $request->header_only;
1.68 www 1221:
1222:
1.255 sakharuk 1223: my $file=&Apache::lonnet::filelocation("",$request->uri);
1.274 albertel 1224: my $filetype;
1225: if ($file =~ /\.sty$/) {
1226: $filetype='sty';
1227: } else {
1228: $filetype='html';
1229: }
1.78 www 1230: #
1231: # Edit action? Save file.
1232: #
1.255 sakharuk 1233: unless ($ENV{'request.state'} eq 'published') {
1234: if (($ENV{'form.savethisfile'}) || ($ENV{'form.attemptclean'})) {
1.271 www 1235: if (&storefile($file,$ENV{'form.filecont'})) {
1.309 albertel 1236: &Apache::lonxml::info("<font COLOR=\"#0000FF\">".
1237: &mt('Updated').": ".
1238: &Apache::lonlocal::locallocaltime(time).
1239: " </font>");
1.271 www 1240: }
1.255 sakharuk 1241: }
1242: }
1243: my %mystyle;
1244: my $result = '';
1245: my $filecontents=&Apache::lonnet::getfile($file);
1246: if ($filecontents eq -1) {
1.284 www 1247: my $bodytag=&Apache::loncommon::bodytag('File Error');
1248: my $fnf=&mt('File not found');
1.255 sakharuk 1249: $result=(<<ENDNOTFOUND);
1.78 www 1250: <html>
1251: <head>
1.284 www 1252: <title>$fnf</title>
1.78 www 1253: </head>
1.284 www 1254: $bodytag
1255: <b>$fnf: $file</b>
1.78 www 1256: </body>
1257: </html>
1258: ENDNOTFOUND
1.50 albertel 1259: $filecontents='';
1.255 sakharuk 1260: if ($ENV{'request.state'} ne 'published') {
1.274 albertel 1261: if ($filetype eq 'sty') {
1262: $filecontents=&createnewsty();
1263: } else {
1264: $filecontents=&createnewhtml();
1265: }
1.255 sakharuk 1266: $ENV{'form.editmode'}='Edit'; #force edit mode
1267: }
1268: } else {
1269: unless ($ENV{'request.state'} eq 'published') {
1270: if ($ENV{'form.attemptclean'}) {
1271: $filecontents=&htmlclean($filecontents,1);
1272: }
1.264 www 1273: #
1274: # we are in construction space, see if edit mode forced
1275: &Apache::loncommon::get_unprocessed_cgi
1276: ($ENV{'QUERY_STRING'},['editmode']);
1.255 sakharuk 1277: }
1278: if (!$ENV{'form.editmode'} || $ENV{'form.viewmode'}) {
1279: $result = &Apache::lonxml::xmlparse($request,$target,$filecontents,
1280: '',%mystyle);
1281: }
1.147 albertel 1282: }
1.255 sakharuk 1283:
1.78 www 1284: #
1285: # Edit action? Insert editing commands
1286: #
1.255 sakharuk 1287: unless ($ENV{'request.state'} eq 'published') {
1288: if ($ENV{'form.editmode'} && (!($ENV{'form.viewmode'}))) {
1289: my $displayfile=$request->uri;
1290: $displayfile=~s/^\/[^\/]*//;
1.309 albertel 1291: $result='<html><body bgcolor="#FFFFFF">'.
1292: &Apache::lonxml::message_location().'<h3>'.
1293: $displayfile.
1.255 sakharuk 1294: '</h3></body></html>';
1.274 albertel 1295: $result=&inserteditinfo($result,$filecontents,$filetype);
1.255 sakharuk 1296: }
1.147 albertel 1297: }
1.274 albertel 1298: if ($filetype eq 'html') { writeallows($request->uri); }
1299:
1.255 sakharuk 1300:
1.309 albertel 1301: &Apache::lonxml::add_messages(\$result);
1.255 sakharuk 1302: $request->print($result);
1303:
1304: return OK;
1.253 albertel 1305: }
1306:
1307: sub display_title {
1308: my $result;
1309: if ($ENV{'request.state'} eq 'construct') {
1310: my $title=&Apache::lonnet::gettitle();
1311: if (!defined($title) || $title eq '') {
1312: $title = $ENV{'request.filename'};
1313: $title = substr($title, rindex($title, '/') + 1);
1314: }
1315: $result = "<script type='text/javascript'>top.document.title = '$title - LON-CAPA Construction Space';</script>";
1316: }
1317: return $result;
1.24 sakharuk 1318: }
1.147 albertel 1319:
1.22 albertel 1320: sub debug {
1.298 albertel 1321: if ($Apache::lonxml::debug eq "1") {
1322: $|=1;
1.300 albertel 1323: my $request=$Apache::lonxml::request;
1324: if (!$request) { $request=Apache->request; }
1.314 albertel 1325: $request->print('<font size="-2"><pre>DEBUG:'.&HTML::Entities::encode($_[0],'<>&"')."</pre></font>\n");
1.327 sakharuk 1326: # &Apache::lonnet::logthis($_[0]);
1.298 albertel 1327: }
1.22 albertel 1328: }
1.49 albertel 1329:
1.22 albertel 1330: sub error {
1.205 www 1331: $errorcount++;
1.300 albertel 1332: my $request=$Apache::lonxml::request;
1333: if (!$request) { $request=Apache->request; }
1.74 albertel 1334: if (($Apache::lonxml::debug eq 1) || ($ENV{'request.state'} eq 'construct') ) {
1.166 matthew 1335: # If printing in construction space, put the error inside <pre></pre>
1.309 albertel 1336: push(@Apache::lonxml::error_messages,
1337: $Apache::lonxml::warnings_error_header.
1338: "<b>ERROR:</b>".join("<br />\n",@_)."<br />\n");
1.295 albertel 1339: $Apache::lonxml::warnings_error_header='';
1.52 albertel 1340: } else {
1.309 albertel 1341: push(@Apache::lonxml::error_messages,
1342: "<b>An Error occured while processing this resource. The instructor has been notified.</b> <br />");
1.52 albertel 1343: #notify author
1.146 albertel 1344: &Apache::lonmsg::author_res_msg($ENV{'request.filename'},join('<br />',@_));
1.52 albertel 1345: #notify course
1346: if ( $ENV{'request.course.id'} ) {
1.209 www 1347: my (undef,%users)=&Apache::lonfeedback::decide_receiver(undef,0,1,1,1);
1.143 www 1348: my $declutter=&Apache::lonnet::declutter($ENV{'request.filename'});
1.209 www 1349: foreach (keys %users) {
1350: my ($user,$domain) = split(/:/, $_);
1.143 www 1351: &Apache::lonmsg::user_normal_msg($user,$domain,
1.146 albertel 1352: "Error [$declutter]",join('<br />',@_));
1.52 albertel 1353: }
1354: }
1355: }
1.22 albertel 1356: }
1.49 albertel 1357:
1.22 albertel 1358: sub warning {
1.295 albertel 1359: $warningcount++;
1.261 albertel 1360:
1.295 albertel 1361: if ($ENV{'form.grade_target'} ne 'tex') {
1362: if ($ENV{'request.state'} eq 'construct' || $Apache::lonxml::debug) {
1.300 albertel 1363: my $request=$Apache::lonxml::request;
1364: if (!$request) { $request=Apache->request; }
1.309 albertel 1365: push(@Apache::lonxml::warning_messages,
1366: $Apache::lonxml::warnings_error_header.
1367: "<b>W</b>ARNING<b>:</b>".join('<br />',@_)."<br />\n");
1.295 albertel 1368: $Apache::lonxml::warnings_error_header='';
1369: }
1370: }
1.309 albertel 1371: }
1372:
1373: sub info {
1374: if ($ENV{'form.grade_target'} ne 'tex'
1375: && $ENV{'request.state'} eq 'construct') {
1376: push(@Apache::lonxml::info_messages,join('<br />',@_)."<br />\n");
1377: }
1378: }
1379:
1380: sub message_location {
1381: return '__LONCAPA_INTERNAL_MESSAGE_LOCATION__';
1382: }
1383:
1384: sub add_messages {
1385: my ($msg)=@_;
1386: my $result=join(' ',
1387: @Apache::lonxml::info_messages,
1388: @Apache::lonxml::error_messages,
1389: @Apache::lonxml::warning_messages);
1390: undef(@Apache::lonxml::info_messages);
1391: undef(@Apache::lonxml::error_messages);
1392: undef(@Apache::lonxml::warning_messages);
1393: $$msg=~s/__LONCAPA_INTERNAL_MESSAGE_LOCATION__/$result/;
1394: $$msg=~s/__LONCAPA_INTERNAL_MESSAGE_LOCATION__//g;
1.83 albertel 1395: }
1396:
1397: sub get_param {
1.213 albertel 1398: my ($param,$parstack,$safeeval,$context,$case_insensitive) = @_;
1399: if ( ! $context ) { $context = -1; }
1400: my $args ='';
1401: if ( $#$parstack > (-2-$context) ) { $args=$$parstack[$context]; }
1.297 sakharuk 1402: if ( ! $Apache::lonxml::usestyle ) {
1403: $args=$Apache::lonxml::style_values.$args;
1404: }
1.213 albertel 1405: if ( ! $args ) { return undef; }
1406: if ( $case_insensitive ) {
1407: if ($args =~ s/(my \$)(\Q$param\E)(=\")/$1.lc($2).$3/ei) {
1408: return &Apache::run::run("{$args;".'return $'.$param.'}',
1409: $safeeval); #'
1410: } else {
1411: return undef;
1412: }
1413: } else {
1414: if ( $args =~ /my \$\Q$param\E=\"/ ) {
1415: return &Apache::run::run("{$args;".'return $'.$param.'}',
1416: $safeeval); #'
1417: } else {
1418: return undef;
1419: }
1420: }
1.22 albertel 1421: }
1422:
1.132 albertel 1423: sub get_param_var {
1.213 albertel 1424: my ($param,$parstack,$safeeval,$context,$case_insensitive) = @_;
1.132 albertel 1425: if ( ! $context ) { $context = -1; }
1426: my $args ='';
1427: if ( $#$parstack > (-2-$context) ) { $args=$$parstack[$context]; }
1.297 sakharuk 1428: if ( ! $Apache::lonxml::usestyle ) {
1429: $args=$Apache::lonxml::style_values.$args;
1430: }
1.230 albertel 1431: &Apache::lonxml::debug("Args are $args param is $param");
1.213 albertel 1432: if ($case_insensitive) {
1433: if (! ($args=~s/(my \$)(\Q$param\E)(=\")/$1.lc($2).$3/ei)) {
1434: return undef;
1435: }
1436: } elsif ( $args !~ /my \$\Q$param\E=\"/ ) { return undef; }
1.132 albertel 1437: my $value=&Apache::run::run("{$args;".'return $'.$param.'}',$safeeval); #'
1.230 albertel 1438: &Apache::lonxml::debug("first run is $value");
1439: if ($value =~ /^[\$\@\%]\w+$/) {
1440: &Apache::lonxml::debug("doing second");
1441: my @result=&Apache::run::run("return $value",$safeeval,1);
1442: if (!defined($result[0])) {
1443: return $value
1444: } else {
1445: if (wantarray) { return @result; } else { return $result[0]; }
1446: }
1.132 albertel 1447: } else {
1448: return $value;
1449: }
1450: }
1451:
1.74 albertel 1452: sub register_insert {
1.75 albertel 1453: my @data = split /\n/, &Apache::lonnet::getfile('/home/httpd/lonTabs/insertlist.tab');
1.74 albertel 1454: my $i;
1.76 albertel 1455: my $tagnum=0;
1.74 albertel 1456: my @order;
1457: for ($i=0;$i < $#data; $i++) {
1458: my $line = $data[$i];
1459: if ( $line =~ /^\#/ || $line =~ /^\s*\n/) { next; }
1460: if ( $line =~ /TABLE/ ) { last; }
1.268 bowersj2 1461: my ($tag,$descrip,$color,$function,$show,$helpfile,$helpdesc) = split(/,/, $line);
1.135 albertel 1462: if ($tag) {
1463: $insertlist{"$tagnum.tag"} = $tag;
1464: $insertlist{"$tagnum.description"} = $descrip;
1465: $insertlist{"$tagnum.color"} = $color;
1466: $insertlist{"$tagnum.function"} = $function;
1467: if (!defined($show)) { $show='yes'; }
1468: $insertlist{"$tagnum.show"}= $show;
1.268 bowersj2 1469: $insertlist{"$tagnum.helpfile"} = $helpfile;
1470: $insertlist{"$tagnum.helpdesc"} = $helpdesc;
1.135 albertel 1471: $insertlist{"$tag.num"}=$tagnum;
1472: $tagnum++;
1473: }
1.74 albertel 1474: }
1.76 albertel 1475: $i++; #skipping TABLE line
1476: $tagnum = 0;
1.74 albertel 1477: for (;$i < $#data;$i++) {
1478: my $line = $data[$i];
1.76 albertel 1479: my ($mnemonic,@which) = split(/ +/,$line);
1480: my $tag = $insertlist{"$tagnum.tag"};
1.144 matthew 1481: for (my $j=0;$j <=$#which;$j++) {
1.74 albertel 1482: if ( $which[$j] eq 'Y' ) {
1.76 albertel 1483: if ($insertlist{"$j.show"} ne 'no') {
1484: push(@{ $insertlist{"$tag.which"} },$j);
1485: }
1.74 albertel 1486: }
1487: }
1.76 albertel 1488: $tagnum++;
1.74 albertel 1489: }
1490: }
1.98 albertel 1491:
1492: sub description {
1493: my ($token)=@_;
1.138 albertel 1494: my $tagnum;
1495: my $tag=$token->[1];
1496: foreach my $namespace (reverse @Apache::lonxml::namespace) {
1497: my $testtag=$namespace.'::'.$tag;
1498: $tagnum=$insertlist{"$testtag.num"};
1499: if (defined($tagnum)) { last; }
1500: }
1501: if (!defined ($tagnum)) { $tagnum=$Apache::lonxml::insertlist{"$tag.num"}; }
1502: return $insertlist{$tagnum.'.description'};
1.268 bowersj2 1503: }
1504:
1505: # Returns a list containing the help file, and the description
1506: sub helpinfo {
1507: my ($token)=@_;
1508: my $tagnum;
1509: my $tag=$token->[1];
1510: foreach my $namespace (reverse @Apache::lonxml::namespace) {
1511: my $testtag=$namespace.'::'.$tag;
1512: $tagnum=$insertlist{"$testtag.num"};
1513: if (defined($tagnum)) { last; }
1514: }
1515: if (!defined ($tagnum)) { $tagnum=$Apache::lonxml::insertlist{"$tag.num"}; }
1516: return ($insertlist{$tagnum.'.helpfile'}, $insertlist{$tagnum.'.helpdesc'});
1.98 albertel 1517: }
1.123 albertel 1518:
1519: # ----------------------------------------------------------------- whichuser
1520: # returns a list of $symb, $courseid, $domain, $name that is correct for
1521: # calls to lonnet functions for this setup.
1522: # - looks for form.grade_ parameters
1523: sub whichuser {
1.262 matthew 1524: my ($passedsymb)=@_;
1.245 albertel 1525: my ($symb,$courseid,$domain,$name,$publicuser);
1.123 albertel 1526: if (defined($ENV{'form.grade_symb'})) {
1527: my $tmp_courseid=$ENV{'form.grade_courseid'};
1.269 albertel 1528: my $allowed=&Apache::lonnet::allowed('vgr',$tmp_courseid);
1.123 albertel 1529: if ($allowed) {
1530: $symb=$ENV{'form.grade_symb'};
1531: $courseid=$ENV{'form.grade_courseid'};
1532: $domain=$ENV{'form.grade_domain'};
1533: $name=$ENV{'form.grade_username'};
1534: }
1.134 albertel 1535: } else {
1.262 matthew 1536: if (!$passedsymb) {
1537: $symb=&Apache::lonnet::symbread();
1538: } else {
1539: $symb=$passedsymb;
1540: }
1.244 albertel 1541: $courseid=$ENV{'request.course.id'};
1542: $domain=$ENV{'user.domain'};
1543: $name=$ENV{'user.name'};
1544: if ($name eq 'public' && $domain eq 'public') {
1545: if (!defined($ENV{'form.username'})) {
1546: $ENV{'form.username'}.=time.rand(10000000);
1547: }
1548: $name.=$ENV{'form.username'};
1549: }
1.123 albertel 1550: }
1.245 albertel 1551: return ($symb,$courseid,$domain,$name,$publicuser);
1.123 albertel 1552: }
1553:
1.1 sakharuk 1554: 1;
1555: __END__
1.68 www 1556:
1557:
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