Annotation of loncom/xml/lonxml.pm, revision 1.315
1.2 sakharuk 1: # The LearningOnline Network with CAPA
1.3 sakharuk 2: # XML Parser Module
1.2 sakharuk 3: #
1.315 ! albertel 4: # $Id: lonxml.pm,v 1.314 2004/03/30 07:16:24 albertel 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: #
1.3 sakharuk 39: # last modified 06/26/00 by Alexander Sakharuk
1.33 www 40: # 11/6 Gerd Kortemeyer
1.45 www 41: # 6/1/1 Gerd Kortemeyer
1.56 albertel 42: # 2/21,3/13 Guy
1.68 www 43: # 3/29,5/4 Gerd Kortemeyer
1.78 www 44: # 5/26 Gerd Kortemeyer
1.80 harris41 45: # 5/27 H. K. Ng
1.89 www 46: # 6/2,6/3,6/8,6/9 Gerd Kortemeyer
1.93 ng 47: # 6/12,6/13 H. K. Ng
1.95 www 48: # 6/16 Gerd Kortemeyer
1.104 ng 49: # 7/27 H. K. Ng
1.127 www 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
1.130 www 51: # Guy Albertelli
52: # 9/26 Gerd Kortemeyer
1.143 www 53: # Dec Guy Albertelli
54: # YEAR=2002
55: # 1/1 Gerd Kortemeyer
1.145 www 56: # 1/2 Matthew Hall
57: # 1/3 Gerd Kortemeyer
1.143 www 58: #
1.2 sakharuk 59:
1.4 albertel 60: package Apache::lonxml;
1.33 www 61: use vars
1.315 ! albertel 62: qw(@pwd @outputstack $redirection $import @extlinks $metamode $evaluate %insertlist @namespace $errorcount $warningcount);
1.1 sakharuk 63: use strict;
1.167 albertel 64: use HTML::LCParser();
1.161 albertel 65: use HTML::TreeBuilder();
66: use HTML::Entities();
67: use Safe();
68: use Safe::Hole();
69: use Math::Cephes();
70: use Math::Random();
71: use Opcode();
1.271 www 72: use POSIX qw(strftime);
1.72 albertel 73:
1.266 bowersj2 74:
1.72 albertel 75: sub register {
1.141 albertel 76: my ($space,@taglist) = @_;
77: foreach my $temptag (@taglist) {
78: push(@{ $Apache::lonxml::alltags{$temptag} },$space);
1.72 albertel 79: }
80: }
81:
1.141 albertel 82: sub deregister {
83: my ($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: }
1.142 albertel 90: #&printalltags();
1.141 albertel 91: }
92:
1.46 www 93: use Apache::Constants qw(:common);
1.161 albertel 94: use Apache::lontexconvert();
95: use Apache::style();
96: use Apache::run();
97: use Apache::londefdef();
98: use Apache::scripttag();
1.285 www 99: use Apache::languagetags();
1.161 albertel 100: use Apache::edit();
1.266 bowersj2 101: use Apache::inputtags();
102: use Apache::outputtags();
1.161 albertel 103: use Apache::lonnet();
104: use Apache::File();
105: use Apache::loncommon();
1.198 www 106: use Apache::lonfeedback();
1.200 www 107: use Apache::lonmsg();
1.217 matthew 108: use Apache::loncacc();
1.280 www 109: use Apache::lonlocal;
1.79 www 110:
1.72 albertel 111: #================================================== Main subroutine: xmlparse
112: #debugging control, to turn on debugging modify the correct handler
113: $Apache::lonxml::debug=0;
1.206 albertel 114:
115: # keeps count of the number of warnings and errors generated in a parse
116: $warningcount=0;
117: $errorcount=0;
1.72 albertel 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;
1.7 albertel 137:
1.74 albertel 138: # data structure for eidt mode, determines what tags can go into what other tags
139: %insertlist=();
1.68 www 140:
1.99 albertel 141: # stores the list of active tag namespaces
1.76 albertel 142: @namespace=();
143:
1.99 albertel 144: # has the dynamic menu been updated to know about this resource
145: $Apache::lonxml::registered=0;
146:
1.172 albertel 147: # a pointer the the Apache request object
148: $Apache::lonxml::request='';
149:
1.216 sakharuk 150: # a problem number counter, and check on ether it is used
1.237 sakharuk 151: $Apache::lonxml::counter=1;
1.204 albertel 152: $Apache::lonxml::counter_changed=0;
153:
1.212 albertel 154: #internal check on whether to look at style defs
155: $Apache::lonxml::usestyle=1;
1.260 albertel 156:
157: #locations used to store the parameter string for style substitutions
158: $Apache::lonxml::style_values='';
159: $Apache::lonxml::style_end_values='';
1.212 albertel 160:
1.281 albertel 161: #array of ssi calls that need to occur after we are done parsing
162: @Apache::lonxml::ssi_info=();
163:
1.282 albertel 164: #should we do the postag variable interpolation
165: $Apache::lonxml::post_evaluate=1;
166:
1.295 albertel 167: #a header message to emit in the case of any generated warning or errors
168: $Apache::lonxml::warnings_error_header='';
169:
1.68 www 170: sub xmlbegin {
171: my $output='';
172: if ($ENV{'browser.mathml'}) {
173: $output='<?xml version="1.0"?>'
174: .'<?xml-stylesheet type="text/css" href="/adm/MathML/mathml.css"?>'
175: .'<!DOCTYPE html SYSTEM "/adm/MathML/mathml.dtd" '
176: .'[<!ENTITY mathns "http://www.w3.org/1998/Math/MathML">]>'
177: .'<html xmlns:math="http://www.w3.org/1998/Math/MathML" '
178: .'xmlns="http://www.w3.org/TR/REC-html40">';
179: } else {
180: $output='<html>';
181: }
182: return $output;
183: }
184:
185: sub xmlend {
1.278 www 186: my $mode='xml';
187: my $status='OPEN';
188: if ($Apache::lonhomework::parsing_a_problem) {
189: $mode='problem';
190: $status=$Apache::inputtags::status[-1];
191: }
1.298 albertel 192: return &Apache::lonfeedback::list_discussion($mode,$status).'</html>';
1.119 www 193: }
194:
195: sub tokeninputfield {
1.120 www 196: my $defhost=$Apache::lonnet::perlvar{'lonHostID'};
197: $defhost=~tr/a-z/A-Z/;
1.119 www 198: return (<<ENDINPUTFIELD)
1.226 albertel 199: <script type="text/javascript">
1.120 www 200: function updatetoken() {
201: var comp=new Array;
202: var barcode=unescape(document.tokeninput.barcode.value);
203: comp=barcode.split('*');
204: if (typeof(comp[0])!="undefined") {
205: document.tokeninput.codeone.value=comp[0];
206: }
207: if (typeof(comp[1])!="undefined") {
208: document.tokeninput.codetwo.value=comp[1];
209: }
210: if (typeof(comp[2])!="undefined") {
211: comp[2]=comp[2].toUpperCase();
212: document.tokeninput.codethree.value=comp[2];
213: }
214: document.tokeninput.barcode.value='';
215: }
216: </script>
217: <form method="post" name="tokeninput">
1.119 www 218: <table border="2" bgcolor="#FFFFBB">
219: <tr><th>DocID Checkin</th></tr>
220: <tr><td>
221: <table>
222: <tr>
223: <td>Scan in Barcode</td>
1.120 www 224: <td><input type="text" size="22" name="barcode"
225: onChange="updatetoken()"/></td>
1.119 www 226: </tr>
227: <tr><td><i>or</i> Type in DocID</td>
228: <td>
229: <input type="text" size="5" name="codeone" />
1.120 www 230: <b><font size="+2">*</font></b>
1.119 www 231: <input type="text" size="5" name="codetwo" />
1.120 www 232: <b><font size="+2">*</font></b>
233: <input type="text" size="10" name="codethree" value="$defhost"
234: onChange="this.value=this.value.toUpperCase()" />
1.119 www 235: </td></tr>
236: </table>
237: </td></tr>
238: <tr><td><input type="submit" value="Check in DocID" /></td></tr>
239: </table>
240: </form>
241: ENDINPUTFIELD
1.112 www 242: }
243:
1.116 www 244: sub maketoken {
1.118 www 245: my ($symb,$tuname,$tudom,$tcrsid)=@_;
1.112 www 246: unless ($symb) {
247: $symb=&Apache::lonnet::symbread();
248: }
249: unless ($tuname) {
250: $tuname=$ENV{'user.name'};
251: $tudom=$ENV{'user.domain'};
252: $tcrsid=$ENV{'request.course.id'};
253: }
1.116 www 254:
1.118 www 255: return &Apache::lonnet::checkout($symb,$tuname,$tudom,$tcrsid);
256: }
257:
258: sub printtokenheader {
1.133 albertel 259: my ($target,$token,$tsymb,$tcrsid,$tudom,$tuname)=@_;
1.116 www 260: unless ($token) { return ''; }
1.118 www 261:
1.133 albertel 262: my ($symb,$courseid,$domain,$name) = &Apache::lonxml::whichuser();
263: unless ($tsymb) {
264: $tsymb=$symb;
1.118 www 265: }
266: unless ($tuname) {
1.133 albertel 267: $tuname=$name;
268: $tudom=$domain;
269: $tcrsid=$courseid;
1.118 www 270: }
1.114 www 271:
272: my %reply=&Apache::lonnet::get('environment',
273: ['firstname','middlename','lastname','generation'],
274: $tudom,$tuname);
275: my $plainname=$reply{'firstname'}.' '.
276: $reply{'middlename'}.' '.
277: $reply{'lastname'}.' '.
278: $reply{'generation'};
279:
1.112 www 280: if ($target eq 'web') {
1.145 www 281: my %idhash=&Apache::lonnet::idrget($tudom,($tuname));
1.115 www 282: return
1.221 albertel 283: '<img align="right" src="/cgi-bin/barcode.png?encode='.$token.'" />'.
1.284 www 284: &mt('Checked out for').' '.$plainname.
285: '<br />'.&mt('User').': '.$tuname.' at '.$tudom.
286: '<br />'.&mt('ID').': '.$idhash{$tuname}.
287: '<br />'.&mt('CourseID').': '.$tcrsid.
288: '<br />'.&mt('Course').': '.$ENV{'course.'.$tcrsid.'.description'}.
289: '<br />'.&mt('DocID').': '.$token.
290: '<br />'.&mt('Time').': '.&Apache::lonlocal::locallocaltime().'<hr />';
1.112 www 291: } else {
1.121 albertel 292: return $token;
1.112 www 293: }
1.68 www 294: }
295:
1.70 www 296: sub fontsettings() {
297: my $headerstring='';
298: if (($ENV{'browser.os'} eq 'mac') && (!$ENV{'browser.mathml'})) {
1.248 albertel 299: $headerstring.=
300: '<meta Content-Type="text/html; charset=x-mac-roman">';
1.263 albertel 301: } elsif (!$ENV{'browser.mathml'} && $ENV{'browser.unicode'}) {
1.248 albertel 302: $headerstring.=
303: '<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />';
1.70 www 304: }
305: return $headerstring;
1.68 www 306: }
307:
1.48 albertel 308: sub printalltags {
309: my $temp;
310: foreach $temp (sort keys %Apache::lonxml::alltags) {
1.141 albertel 311: &Apache::lonxml::debug("$temp -- ".
312: join(',',@{ $Apache::lonxml::alltags{$temp} }));
1.48 albertel 313: }
314: }
1.31 sakharuk 315:
1.3 sakharuk 316: sub xmlparse {
1.172 albertel 317: my ($request,$target,$content_file_string,$safeinit,%style_for_target) = @_;
1.96 albertel 318:
1.172 albertel 319: &setup_globals($request,$target);
1.232 albertel 320: &Apache::inputtags::initialize_inputtags();
321: &Apache::outputtags::initialize_outputtags();
322: &Apache::edit::initialize_edit();
1.287 albertel 323: &Apache::londefdef::initialize_londefdef();
1.244 albertel 324:
1.178 www 325: #
326: # do we have a course style file?
327: #
328:
1.208 albertel 329: if ($ENV{'request.course.id'} && $ENV{'request.state'} ne 'construct') {
1.178 www 330: my $bodytext=
331: $ENV{'course.'.$ENV{'request.course.id'}.'.default_xml_style'};
332: if ($bodytext) {
333: my $location=&Apache::lonnet::filelocation('',$bodytext);
334: my $styletext=&Apache::lonnet::getfile($location);
335: if ($styletext ne '-1') {
336: %style_for_target = (%style_for_target,
337: &Apache::style::styleparser($target,$styletext));
338: }
339: }
1.292 sakharuk 340: } elsif ($ENV{'construct.style'} && ($ENV{'request.state'} eq 'construct')) {
341: my $location=&Apache::lonnet::filelocation('',$ENV{'construct.style'});
1.291 sakharuk 342: my $styletext=&Apache::lonnet::getfile($location);
343: if ($styletext ne '-1') {
344: %style_for_target = (%style_for_target,
345: &Apache::style::styleparser($target,$styletext));
346: }
1.178 www 347: }
1.255 sakharuk 348: #&printalltags();
1.16 albertel 349: my @pars = ();
1.23 albertel 350: my $pwd=$ENV{'request.filename'};
351: $pwd =~ s:/[^/]*$::;
352: &newparser(\@pars,\$content_file_string,$pwd);
1.24 sakharuk 353:
1.3 sakharuk 354: my $safeeval = new Safe;
1.40 albertel 355: my $safehole = new Safe::Hole;
1.82 ng 356: &init_safespace($target,$safeeval,$safehole,$safeinit);
1.3 sakharuk 357: #-------------------- Redefinition of the target in the case of compound target
358:
359: ($target, my @tenta) = split('&&',$target);
360:
1.150 albertel 361: my @stack = ();
1.3 sakharuk 362: my @parstack = ();
1.17 albertel 363: &initdepth;
1.67 www 364:
1.101 albertel 365: my $finaloutput = &inner_xmlparse($target,\@stack,\@parstack,\@pars,
366: $safeeval,\%style_for_target);
1.255 sakharuk 367:
1.125 www 368: if ($ENV{'request.uri'}) {
369: &writeallows($ENV{'request.uri'});
370: }
1.281 albertel 371: &do_registered_ssi();
1.204 albertel 372: if ($Apache::lonxml::counter_changed) { &store_counter() }
1.3 sakharuk 373: return $finaloutput;
1.106 www 374: }
375:
376: sub htmlclean {
1.107 www 377: my ($raw,$full)=@_;
1.106 www 378:
379: my $tree = HTML::TreeBuilder->new;
380: $tree->ignore_unknown(0);
1.140 albertel 381:
1.106 www 382: $tree->parse($raw);
383:
1.107 www 384: my $output= $tree->as_HTML(undef,' ');
1.140 albertel 385:
1.161 albertel 386: $output=~s/\<(br|hr|img|meta|allow)(.*?)\>/\<$1$2 \/\>/gis;
1.111 www 387: $output=~s/\<\/(br|hr|img|meta|allow)\>//gis;
1.107 www 388: unless ($full) {
389: $output=~s/\<[\/]*(body|head|html)\>//gis;
390: }
1.106 www 391:
392: $tree = $tree->delete;
393:
394: return $output;
1.15 albertel 395: }
396:
1.191 albertel 397: sub latex_special_symbols {
1.272 albertel 398: my ($string,$where)=@_;
1.235 sakharuk 399: if ($where eq 'header') {
1.272 albertel 400: $string =~ s/(\\|_|\^)/ /g;
1.311 albertel 401: $string =~ s/(\$|%|\{|\})/\\$1/g;
1.273 sakharuk 402: $string =~ s/_/ /g;
1.311 albertel 403: $string=&Apache::lonprintout::character_chart($string);
404: # any & or # leftover should be safe to just escape
405: $string=~s/([^\\])\&/$1\\\&/g;
406: $string=~s/([^\\])\#/$1\\\#/g;
1.229 sakharuk 407: } else {
1.312 albertel 408: $string=~s/\\/\\ensuremath{\\backslash}/g;
1.313 albertel 409: $string=~s/([^\\]|^)\%/$1\\\%/g;
410: $string=~s/([^\\]|^)(\$|_)/$1\\$2/g;
1.310 sakharuk 411: $string=~s/\$\$/\$\\\$/g;
412: $string=~s/\#\#/\#\\\#/g;
1.313 albertel 413: $string=~s/([^\\]|^)(\~|\^)/$1\\$2\\strut /g;
1.310 sakharuk 414: $string=~s/(>|<)/\\ensuremath\{$1\}/g; #more or less
1.311 albertel 415: $string=&Apache::lonprintout::character_chart($string);
416: # any & or # leftover should be safe to just escape
1.313 albertel 417: $string=~s/([^\\]|^)\&/$1\\\&/g;
418: $string=~s/([^\\]|^)\#/$1\\\#/g;
1.310 sakharuk 419: #single { or } How to escape?
1.229 sakharuk 420: }
1.272 albertel 421: return $string;
1.188 sakharuk 422: }
423:
1.101 albertel 424: sub inner_xmlparse {
425: my ($target,$stack,$parstack,$pars,$safeeval,$style_for_target)=@_;
426: my $finaloutput = '';
427: my $result;
428: my $token;
1.258 albertel 429: my $dontpop=0;
1.101 albertel 430: while ( $#$pars > -1 ) {
431: while ($token = $$pars['-1']->get_token) {
1.261 albertel 432: if (($token->[0] eq 'T') || ($token->[0] eq 'C') ) {
1.101 albertel 433: if ($metamode<1) {
1.190 albertel 434: my $text=$token->[1];
1.193 albertel 435: if ($token->[0] eq 'C' && $target eq 'tex') {
1.239 sakharuk 436: $text = '';
437: # $text = '%'.$text."\n";
1.182 sakharuk 438: }
1.190 albertel 439: $result.=$text;
1.101 albertel 440: }
1.261 albertel 441: } elsif (($token->[0] eq 'D')) {
442: if ($metamode<1 && $target eq 'web') {
443: my $text=$token->[1];
444: $result.=$text;
445: }
1.101 albertel 446: } elsif ($token->[0] eq 'PI') {
1.261 albertel 447: if ($metamode<1 && $target eq 'web') {
1.101 albertel 448: $result=$token->[2];
449: }
450: } elsif ($token->[0] eq 'S') {
1.140 albertel 451: # add tag to stack
1.101 albertel 452: push (@$stack,$token->[1]);
453: # add parameters list to another stack
454: push (@$parstack,&parstring($token));
1.140 albertel 455: &increasedepth($token);
1.212 albertel 456: if ($Apache::lonxml::usestyle &&
457: exists($$style_for_target{$token->[1]})) {
458: $Apache::lonxml::usestyle=0;
459: my $string=$$style_for_target{$token->[1]}.
460: '<LONCAPA_INTERNAL_TURN_STYLE_ON />';
461: &Apache::lonxml::newparser($pars,\$string);
1.257 albertel 462: $Apache::lonxml::style_values=$$parstack[-1];
1.259 albertel 463: $Apache::lonxml::style_end_values=$$parstack[-1];
1.101 albertel 464: } else {
465: $result = &callsub("start_$token->[1]", $target, $token, $stack,
466: $parstack, $pars, $safeeval, $style_for_target);
1.140 albertel 467: }
1.101 albertel 468: } elsif ($token->[0] eq 'E') {
1.212 albertel 469: if ($Apache::lonxml::usestyle &&
470: exists($$style_for_target{'/'."$token->[1]"})) {
471: $Apache::lonxml::usestyle=0;
472: my $string=$$style_for_target{'/'.$token->[1]}.
1.258 albertel 473: '<LONCAPA_INTERNAL_TURN_STYLE_ON end="'.$token->[1].'" />';
1.212 albertel 474: &Apache::lonxml::newparser($pars,\$string);
1.259 albertel 475: $Apache::lonxml::style_values=$Apache::lonxml::style_end_values;
476: $Apache::lonxml::style_end_values='';
1.258 albertel 477: $dontpop=1;
1.101 albertel 478: } else {
1.258 albertel 479: #clear out any tags that didn't end
480: while ($token->[1] ne $$stack['-1'] && ($#$stack > -1)) {
481: my $lasttag=$$stack[-1];
482: if ($token->[1] =~ /^$lasttag$/i) {
483: &Apache::lonxml::warning('Using tag </'.$token->[1].'> on line '.$token->[3].' as end tag to <'.$$stack[-1].'>');
484: last;
485: } else {
486: &Apache::lonxml::warning('Found tag </'.$token->[1].'> on line '.$token->[3].' when looking for </'.$$stack[-1].'> in file');
487: &end_tag($stack,$parstack,$token);
488: }
489: }
490: $result = &callsub("end_$token->[1]", $target, $token, $stack,
491: $parstack, $pars,$safeeval, $style_for_target);
1.101 albertel 492: }
493: } else {
494: &Apache::lonxml::error("Unknown token event :$token->[0]:$token->[1]:");
495: }
496: #evaluate variable refs in result
1.282 albertel 497: if ($Apache::lonxml::post_evaluate &&$result ne "") {
1.257 albertel 498: my $extras;
499: if (!$Apache::lonxml::usestyle) {
500: $extras=$Apache::lonxml::style_values;
501: }
1.101 albertel 502: if ( $#$parstack > -1 ) {
1.257 albertel 503: $result=&Apache::run::evaluate($result,$safeeval,$extras.$$parstack[-1]);
1.101 albertel 504: } else {
1.257 albertel 505: $result= &Apache::run::evaluate($result,$safeeval,$extras);
1.101 albertel 506: }
1.163 albertel 507: }
1.282 albertel 508: $Apache::lonxml::post_evaluate=1;
509:
1.190 albertel 510: if (($token->[0] eq 'T') || ($token->[0] eq 'C') || ($token->[0] eq 'D') ) {
1.249 albertel 511: #Style file definitions should be correct
1.250 albertel 512: if ($target eq 'tex' && ($Apache::lonxml::usestyle)) {
1.311 albertel 513: $result=&latex_special_symbols($result);
1.249 albertel 514: }
1.190 albertel 515: }
516:
1.169 albertel 517: if ($Apache::lonxml::redirection) {
518: $Apache::lonxml::outputstack['-1'] .= $result;
519: } else {
520: $finaloutput.=$result;
521: }
522: $result = '';
523:
1.258 albertel 524: if ($token->[0] eq 'E' && !$dontpop) {
1.101 albertel 525: &end_tag($stack,$parstack,$token);
526: }
1.258 albertel 527: $dontpop=0;
1.224 albertel 528: }
1.212 albertel 529: if ($#$pars > -1) {
530: pop @$pars;
531: pop @Apache::lonxml::pwd;
532: }
1.101 albertel 533: }
534:
535: # if ($target eq 'meta') {
536: # $finaloutput.=&endredirection;
537: # }
538:
1.169 albertel 539:
1.101 albertel 540: if (($ENV{'QUERY_STRING'}) && ($target eq 'web')) {
541: $finaloutput=&afterburn($finaloutput);
1.216 sakharuk 542: }
1.101 albertel 543: return $finaloutput;
544: }
1.67 www 545:
1.7 albertel 546: sub callsub {
1.84 albertel 547: my ($sub,$target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.7 albertel 548: my $currentstring='';
1.72 albertel 549: my $nodefault;
1.7 albertel 550: {
1.59 albertel 551: my $sub1;
1.7 albertel 552: no strict 'refs';
1.68 www 553: my $tag=$token->[1];
1.236 www 554: # get utterly rid of extended html tags
555: if ($tag=~/^x\-/i) { return ''; }
1.141 albertel 556: my $space=$Apache::lonxml::alltags{$tag}[-1];
1.68 www 557: if (!$space) {
1.141 albertel 558: $tag=~tr/A-Z/a-z/;
1.68 www 559: $sub=~tr/A-Z/a-z/;
1.141 albertel 560: $space=$Apache::lonxml::alltags{$tag}[-1]
1.68 www 561: }
1.97 albertel 562:
563: my $deleted=0;
564: $Apache::lonxml::curdepth=join('_',@Apache::lonxml::depthcounter);
565: if (($token->[0] eq 'S') && ($target eq 'modified')) {
566: $deleted=&Apache::edit::handle_delete($space,$target,$token,$tagstack,
567: $parstack,$parser,$safeeval,
568: $style);
569: }
570: if (!$deleted) {
571: if ($space) {
1.220 albertel 572: #&Apache::lonxml::debug("Calling sub $sub in $space $metamode");
1.97 albertel 573: $sub1="$space\:\:$sub";
574: ($currentstring,$nodefault) = &$sub1($target,$token,$tagstack,
575: $parstack,$parser,$safeeval,
576: $style);
577: } else {
1.220 albertel 578: #&Apache::lonxml::debug("NOT Calling sub $sub in $space $metamode");
1.97 albertel 579: if ($metamode <1) {
580: if (defined($token->[4]) && ($metamode < 1)) {
581: $currentstring = $token->[4];
582: } else {
583: $currentstring = $token->[2];
584: }
1.62 sakharuk 585: }
1.7 albertel 586: }
1.97 albertel 587: # &Apache::lonxml::debug("nodefalt:$nodefault:");
588: if ($currentstring eq '' && $nodefault eq '') {
589: if ($target eq 'edit') {
1.220 albertel 590: #&Apache::lonxml::debug("doing default edit for $token->[1]");
1.97 albertel 591: if ($token->[0] eq 'S') {
592: $currentstring = &Apache::edit::tag_start($target,$token);
593: } elsif ($token->[0] eq 'E') {
594: $currentstring = &Apache::edit::tag_end($target,$token);
595: }
596: } elsif ($target eq 'modified') {
597: if ($token->[0] eq 'S') {
598: $currentstring = $token->[4];
599: $currentstring.=&Apache::edit::handle_insert();
1.210 www 600: } elsif ($token->[0] eq 'E') {
601: $currentstring = $token->[2];
602: $currentstring.=&Apache::edit::handle_insertafter($token->[1]);
1.97 albertel 603: } else {
604: $currentstring = $token->[2];
605: }
1.72 albertel 606: }
607: }
1.7 albertel 608: }
609: use strict 'refs';
610: }
611: return $currentstring;
1.82 ng 612: }
613:
1.96 albertel 614: sub setup_globals {
1.172 albertel 615: my ($request,$target)=@_;
616: $Apache::lonxml::request=$request;
1.99 albertel 617: $Apache::lonxml::registered = 0;
1.205 www 618: $errorcount=0;
619: $warningcount=0;
1.207 albertel 620: $Apache::lonxml::default_homework_loaded=0;
1.212 albertel 621: $Apache::lonxml::usestyle=1;
1.204 albertel 622: &init_counter();
1.101 albertel 623: @Apache::lonxml::pwd=();
1.124 albertel 624: @Apache::lonxml::extlinks=();
1.281 albertel 625: @Apache::lonxml::ssi_info=();
1.282 albertel 626: $Apache::lonxml::post_evaluate=1;
1.295 albertel 627: $Apache::lonxml::warnings_error_header='';
1.96 albertel 628: if ($target eq 'meta') {
629: $Apache::lonxml::redirection = 0;
630: $Apache::lonxml::metamode = 1;
631: $Apache::lonxml::evaluate = 1;
632: $Apache::lonxml::import = 0;
1.129 albertel 633: } elsif ($target eq 'answer') {
634: $Apache::lonxml::redirection = 0;
635: $Apache::lonxml::metamode = 1;
636: $Apache::lonxml::evaluate = 1;
637: $Apache::lonxml::import = 1;
1.96 albertel 638: } elsif ($target eq 'grade') {
639: &startredirection;
640: $Apache::lonxml::metamode = 0;
641: $Apache::lonxml::evaluate = 1;
642: $Apache::lonxml::import = 1;
643: } elsif ($target eq 'modified') {
644: $Apache::lonxml::redirection = 0;
645: $Apache::lonxml::metamode = 0;
646: $Apache::lonxml::evaluate = 0;
647: $Apache::lonxml::import = 0;
648: } elsif ($target eq 'edit') {
649: $Apache::lonxml::redirection = 0;
650: $Apache::lonxml::metamode = 0;
651: $Apache::lonxml::evaluate = 0;
652: $Apache::lonxml::import = 0;
1.163 albertel 653: } elsif ($target eq 'analyze') {
654: $Apache::lonxml::redirection = 0;
655: $Apache::lonxml::metamode = 0;
656: $Apache::lonxml::evaluate = 1;
657: $Apache::lonxml::import = 1;
1.96 albertel 658: } else {
659: $Apache::lonxml::redirection = 0;
660: $Apache::lonxml::metamode = 0;
661: $Apache::lonxml::evaluate = 1;
662: $Apache::lonxml::import = 1;
663: }
664: }
665:
1.82 ng 666: sub init_safespace {
667: my ($target,$safeeval,$safehole,$safeinit) = @_;
668: $safeeval->permit("entereval");
669: $safeeval->permit(":base_math");
670: $safeeval->permit("sort");
1.286 albertel 671: $safeeval->permit("time");
1.82 ng 672: $safeeval->deny(":base_io");
1.102 albertel 673: $safehole->wrap(\&Apache::scripttag::xmlparse,$safeeval,'&xmlparse');
1.251 albertel 674: $safehole->wrap(\&Apache::outputtags::multipart,$safeeval,'&multipart');
1.82 ng 675: $safehole->wrap(\&Apache::lonnet::EXT,$safeeval,'&EXT');
676:
677: $safehole->wrap(\&Math::Cephes::asin,$safeeval,'&asin');
678: $safehole->wrap(\&Math::Cephes::acos,$safeeval,'&acos');
679: $safehole->wrap(\&Math::Cephes::atan,$safeeval,'&atan');
680: $safehole->wrap(\&Math::Cephes::sinh,$safeeval,'&sinh');
681: $safehole->wrap(\&Math::Cephes::cosh,$safeeval,'&cosh');
682: $safehole->wrap(\&Math::Cephes::tanh,$safeeval,'&tanh');
683: $safehole->wrap(\&Math::Cephes::asinh,$safeeval,'&asinh');
684: $safehole->wrap(\&Math::Cephes::acosh,$safeeval,'&acosh');
685: $safehole->wrap(\&Math::Cephes::atanh,$safeeval,'&atanh');
686: $safehole->wrap(\&Math::Cephes::erf,$safeeval,'&erf');
687: $safehole->wrap(\&Math::Cephes::erfc,$safeeval,'&erfc');
688: $safehole->wrap(\&Math::Cephes::j0,$safeeval,'&j0');
689: $safehole->wrap(\&Math::Cephes::j1,$safeeval,'&j1');
690: $safehole->wrap(\&Math::Cephes::jn,$safeeval,'&jn');
691: $safehole->wrap(\&Math::Cephes::jv,$safeeval,'&jv');
692: $safehole->wrap(\&Math::Cephes::y0,$safeeval,'&y0');
693: $safehole->wrap(\&Math::Cephes::y1,$safeeval,'&y1');
694: $safehole->wrap(\&Math::Cephes::yn,$safeeval,'&yn');
695: $safehole->wrap(\&Math::Cephes::yv,$safeeval,'&yv');
1.215 albertel 696:
697: $safehole->wrap(\&Math::Cephes::bdtr ,$safeeval,'&bdtr' );
698: $safehole->wrap(\&Math::Cephes::bdtrc ,$safeeval,'&bdtrc' );
699: $safehole->wrap(\&Math::Cephes::bdtri ,$safeeval,'&bdtri' );
700: $safehole->wrap(\&Math::Cephes::btdtr ,$safeeval,'&btdtr' );
701: $safehole->wrap(\&Math::Cephes::chdtr ,$safeeval,'&chdtr' );
702: $safehole->wrap(\&Math::Cephes::chdtrc,$safeeval,'&chdtrc');
703: $safehole->wrap(\&Math::Cephes::chdtri,$safeeval,'&chdtri');
704: $safehole->wrap(\&Math::Cephes::fdtr ,$safeeval,'&fdtr' );
705: $safehole->wrap(\&Math::Cephes::fdtrc ,$safeeval,'&fdtrc' );
706: $safehole->wrap(\&Math::Cephes::fdtri ,$safeeval,'&fdtri' );
707: $safehole->wrap(\&Math::Cephes::gdtr ,$safeeval,'&gdtr' );
708: $safehole->wrap(\&Math::Cephes::gdtrc ,$safeeval,'&gdtrc' );
709: $safehole->wrap(\&Math::Cephes::nbdtr ,$safeeval,'&nbdtr' );
710: $safehole->wrap(\&Math::Cephes::nbdtrc,$safeeval,'&nbdtrc');
711: $safehole->wrap(\&Math::Cephes::nbdtri,$safeeval,'&nbdtri');
712: $safehole->wrap(\&Math::Cephes::ndtr ,$safeeval,'&ndtr' );
713: $safehole->wrap(\&Math::Cephes::ndtri ,$safeeval,'&ndtri' );
714: $safehole->wrap(\&Math::Cephes::pdtr ,$safeeval,'&pdtr' );
715: $safehole->wrap(\&Math::Cephes::pdtrc ,$safeeval,'&pdtrc' );
716: $safehole->wrap(\&Math::Cephes::pdtri ,$safeeval,'&pdtri' );
717: $safehole->wrap(\&Math::Cephes::stdtr ,$safeeval,'&stdtr' );
718: $safehole->wrap(\&Math::Cephes::stdtri,$safeeval,'&stdtri');
719:
720: # $safehole->wrap(\&Math::Cephes::new_fract,$safeeval,'&new_fract');
721: # $safehole->wrap(\&Math::Cephes::radd,$safeeval,'&radd');
722: # $safehole->wrap(\&Math::Cephes::rsub,$safeeval,'&rsub');
723: # $safehole->wrap(\&Math::Cephes::rmul,$safeeval,'&rmul');
724: # $safehole->wrap(\&Math::Cephes::rdiv,$safeeval,'&rdiv');
725: # $safehole->wrap(\&Math::Cephes::euclid,$safeeval,'&euclid');
726:
1.91 ng 727: $safehole->wrap(\&Math::Random::random_beta,$safeeval,'&math_random_beta');
728: $safehole->wrap(\&Math::Random::random_chi_square,$safeeval,'&math_random_chi_square');
729: $safehole->wrap(\&Math::Random::random_exponential,$safeeval,'&math_random_exponential');
730: $safehole->wrap(\&Math::Random::random_f,$safeeval,'&math_random_f');
731: $safehole->wrap(\&Math::Random::random_gamma,$safeeval,'&math_random_gamma');
732: $safehole->wrap(\&Math::Random::random_multivariate_normal,$safeeval,'&math_random_multivariate_normal');
733: $safehole->wrap(\&Math::Random::random_multinomial,$safeeval,'&math_random_multinomial');
734: $safehole->wrap(\&Math::Random::random_noncentral_chi_square,$safeeval,'&math_random_noncentral_chi_square');
735: $safehole->wrap(\&Math::Random::random_noncentral_f,$safeeval,'&math_random_noncentral_f');
736: $safehole->wrap(\&Math::Random::random_normal,$safeeval,'&math_random_normal');
737: $safehole->wrap(\&Math::Random::random_permutation,$safeeval,'&math_random_permutation');
1.93 ng 738: $safehole->wrap(\&Math::Random::random_permuted_index,$safeeval,'&math_random_permuted_index');
1.91 ng 739: $safehole->wrap(\&Math::Random::random_uniform,$safeeval,'&math_random_uniform');
740: $safehole->wrap(\&Math::Random::random_poisson,$safeeval,'&math_random_poisson');
741: $safehole->wrap(\&Math::Random::random_uniform_integer,$safeeval,'&math_random_uniform_integer');
742: $safehole->wrap(\&Math::Random::random_negative_binomial,$safeeval,'&math_random_negative_binomial');
743: $safehole->wrap(\&Math::Random::random_binomial,$safeeval,'&math_random_binomial');
744: $safehole->wrap(\&Math::Random::random_seed_from_phrase,$safeeval,'&random_seed_from_phrase');
745: $safehole->wrap(\&Math::Random::random_set_seed_from_phrase,$safeeval,'&random_set_seed_from_phrase');
746: $safehole->wrap(\&Math::Random::random_get_seed,$safeeval,'&random_get_seed');
747: $safehole->wrap(\&Math::Random::random_set_seed,$safeeval,'&random_set_seed');
1.305 albertel 748: $safehole->wrap(\&Apache::lonxml::error,$safeeval,'&LONCAPA_INTERNAL_ERROR');
1.311 albertel 749: $safehole->wrap(\&Apache::lonxml::debug,$safeeval,'&LONCAPA_INTERNAL_DEBUG');
1.91 ng 750:
1.82 ng 751: #need to inspect this class of ops
752: # $safeeval->deny(":base_orig");
1.91 ng 753: $safeinit .= ';$external::target="'.$target.'";';
1.121 albertel 754: my $rndseed;
1.123 albertel 755: my ($symb,$courseid,$domain,$name) = &Apache::lonxml::whichuser();
756: $rndseed=&Apache::lonnet::rndseed($symb,$courseid,$domain,$name);
1.121 albertel 757: $safeinit .= ';$external::randomseed='.$rndseed.';';
1.249 albertel 758: &Apache::lonxml::debug("Setting rndseed to $rndseed");
1.82 ng 759: &Apache::run::run($safeinit,$safeeval);
1.303 albertel 760:
761: my $subroutine=<<'EVALUATESUB';
762: sub __LC_INTERNAL_EVALUATE__ {
763: my ($__LC__a,$__LC__b,$__LC__c)=@_;
764: my $__LC__prefix;
765: while(1){
766: {
1.306 albertel 767: use strict;
768: no strict "vars";
1.303 albertel 769: if (eval(defined(eval($__LC__a.$__LC__b)))) {
1.306 albertel 770: return $__LC__prefix.eval($__LC__a.$__LC__b.$__LC__c);
1.303 albertel 771: }
772: }
773: $__LC__prefix.=substr($__LC__a,0,1,"");
774: if ($__LC__a!~/^(\$|&|\#)/) { last; }
775: }
1.306 albertel 776: return $__LC__prefix.$__LC__a.$__LC__b.$__LC__c;
1.303 albertel 777: }
778: EVALUATESUB
779: $safeeval->permit("require");
780: $safeeval->reval($subroutine);
781: $safeeval->deny("require");
1.207 albertel 782: }
783:
784: sub default_homework_load {
785: my ($safeeval)=@_;
786: &Apache::lonxml::debug('Loading default_homework');
787: my $default=&Apache::lonnet::getfile('/home/httpd/html/res/adm/includes/default_homework.lcpm');
1.241 albertel 788: if ($default eq -1) {
1.207 albertel 789: &Apache::lonxml::error("<b>Unable to find <i>default_homework.lcpm</i></b>");
790: } else {
791: &Apache::run::run($default,$safeeval);
792: $Apache::lonxml::default_homework_loaded=1;
793: }
1.17 albertel 794: }
795:
1.55 albertel 796: sub startredirection {
797: $Apache::lonxml::redirection++;
798: push (@Apache::lonxml::outputstack, '');
799: }
800:
801: sub endredirection {
802: if (!$Apache::lonxml::redirection) {
1.72 albertel 803: &Apache::lonxml::error("Endredirection was called, before a startredirection, perhaps you have unbalanced tags. Some debuging information:".join ":",caller);
1.55 albertel 804: return '';
805: }
806: $Apache::lonxml::redirection--;
807: pop @Apache::lonxml::outputstack;
1.97 albertel 808: }
809:
810: sub end_tag {
811: my ($tagstack,$parstack,$token)=@_;
812: pop(@$tagstack);
813: pop(@$parstack);
814: &decreasedepth($token);
1.55 albertel 815: }
816:
1.17 albertel 817: sub initdepth {
818: @Apache::lonxml::depthcounter=();
819: $Apache::lonxml::depth=-1;
820: $Apache::lonxml::olddepth=-1;
821: }
822:
823: sub increasedepth {
1.19 albertel 824: my ($token) = @_;
1.17 albertel 825: $Apache::lonxml::depth++;
826: $Apache::lonxml::depthcounter[$Apache::lonxml::depth]++;
827: if ($Apache::lonxml::depthcounter[$Apache::lonxml::depth]==1) {
828: $Apache::lonxml::olddepth=$Apache::lonxml::depth;
829: }
1.42 albertel 830: my $curdepth=join('_',@Apache::lonxml::depthcounter);
1.64 albertel 831: &Apache::lonxml::debug("s $Apache::lonxml::depth : $Apache::lonxml::olddepth : $curdepth : $token->[1]\n");
1.54 albertel 832: #print "<br />s $Apache::lonxml::depth : $Apache::lonxml::olddepth : $curdepth : $token->[1]\n";
1.17 albertel 833: }
834:
835: sub decreasedepth {
1.19 albertel 836: my ($token) = @_;
1.17 albertel 837: $Apache::lonxml::depth--;
1.36 albertel 838: if ($Apache::lonxml::depth<$Apache::lonxml::olddepth-1) {
839: $#Apache::lonxml::depthcounter--;
840: $Apache::lonxml::olddepth=$Apache::lonxml::depth+1;
841: }
1.43 albertel 842: if ( $Apache::lonxml::depth < -1) {
1.280 www 843: &Apache::lonxml::warning(&mt("Missing tags, unable to properly run file."));
1.43 albertel 844: $Apache::lonxml::depth='-1';
845: }
1.42 albertel 846: my $curdepth=join('_',@Apache::lonxml::depthcounter);
1.64 albertel 847: &Apache::lonxml::debug("e $Apache::lonxml::depth : $Apache::lonxml::olddepth : $token->[1] : $curdepth\n");
1.54 albertel 848: #print "<br />e $Apache::lonxml::depth : $Apache::lonxml::olddepth : $token->[1] : $curdepth\n";
1.1 sakharuk 849: }
1.19 albertel 850:
1.180 albertel 851: sub get_all_text_unbalanced {
1.190 albertel 852: #there is a copy of this in lonpublisher.pm
1.180 albertel 853: my($tag,$pars)= @_;
854: my $token;
855: my $result='';
856: $tag='<'.$tag.'>';
857: while ($token = $$pars[-1]->get_token) {
858: if (($token->[0] eq 'T')||($token->[0] eq 'C')||($token->[0] eq 'D')) {
859: $result.=$token->[1];
860: } elsif ($token->[0] eq 'PI') {
861: $result.=$token->[2];
862: } elsif ($token->[0] eq 'S') {
863: $result.=$token->[4];
864: } elsif ($token->[0] eq 'E') {
865: $result.=$token->[2];
866: }
1.211 albertel 867: if ($result =~ /(.*)\Q$tag\E(.*)/s) {
1.180 albertel 868: &Apache::lonxml::debug('Got a winner with leftovers ::'.$2);
869: &Apache::lonxml::debug('Result is :'.$1);
870: $result=$1;
871: my $redo=$tag.$2;
872: &Apache::lonxml::newparser($pars,\$redo);
873: last;
874: }
875: }
876: return $result
1.204 albertel 877: }
878:
879: sub increment_counter {
1.247 albertel 880: my ($increment) = @_;
1.289 sakharuk 881: if (defined($increment) && $increment gt 0) {
882: $Apache::lonxml::counter+=$increment;
883: } else {
884: $Apache::lonxml::counter++;
1.247 albertel 885: }
1.289 sakharuk 886: $Apache::lonxml::counter_changed=1;
1.204 albertel 887: }
888:
889: sub init_counter {
890: if (defined($ENV{'form.counter'})) {
891: $Apache::lonxml::counter=$ENV{'form.counter'};
1.247 albertel 892: $Apache::lonxml::counter_changed=0;
1.237 sakharuk 893: } else {
1.204 albertel 894: $Apache::lonxml::counter=1;
1.247 albertel 895: $Apache::lonxml::counter_changed=1;
1.204 albertel 896: }
897: }
898:
899: sub store_counter {
900: &Apache::lonnet::appenv(('form.counter' => $Apache::lonxml::counter));
901: return '';
1.180 albertel 902: }
903:
1.19 albertel 904: sub get_all_text {
1.270 albertel 905: my($tag,$pars,$style)= @_;
906: my $gotfullstack=1;
907: if (ref($pars) ne 'ARRAY') {
908: $gotfullstack=0;
909: $pars=[$pars];
910: }
911: if (ref($style) ne 'HASH') {
912: $style={};
913: }
914: my $depth=0;
915: my $token;
916: my $result='';
917: if ( $tag =~ m:^/: ) {
918: my $tag=substr($tag,1);
919: #&Apache::lonxml::debug("have:$tag:");
920: my $top_empty=0;
921: while (($depth >=0) && ($#$pars > -1) && (!$top_empty)) {
922: while (($depth >=0) && ($token = $$pars[-1]->get_token)) {
923: #&Apache::lonxml::debug("e token:$token->[0]:$depth:$token->[1]:".$#$pars.":".$#Apache::lonxml::pwd);
924: if (($token->[0] eq 'T')||($token->[0] eq 'C')||($token->[0] eq 'D')) {
925: $result.=$token->[1];
926: } elsif ($token->[0] eq 'PI') {
927: $result.=$token->[2];
928: } elsif ($token->[0] eq 'S') {
929: if ($token->[1] =~ /^$tag$/i) { $depth++; }
930: if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_ON$/i) { $Apache::lonxml::usestyle=1; }
931: if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_OFF$/i) { $Apache::lonxml::usestyle=0; }
932: $result.=$token->[4];
933: } elsif ($token->[0] eq 'E') {
934: if ( $token->[1] =~ /^$tag$/i) { $depth--; }
935: #skip sending back the last end tag
1.283 albertel 936: if ($depth == 0 && exists($$style{'/'.$token->[1]}) && $Apache::lonxml::usestyle) {
1.270 albertel 937: my $string=
938: '<LONCAPA_INTERNAL_TURN_STYLE_OFF end="yes" />'.
939: $$style{'/'.$token->[1]}.
940: $token->[2].
941: '<LONCAPA_INTERNAL_TURN_STYLE_ON />';
942: &Apache::lonxml::newparser($pars,\$string);
943: #&Apache::lonxml::debug("reParsing $string");
944: next;
945: }
946: if ($depth > -1) {
947: $result.=$token->[2];
948: } else {
949: $$pars[-1]->unget_token($token);
950: }
951: }
952: }
953: if (($depth >=0) && ($#$pars == 0) ) { $top_empty=1; }
954: if (($depth >=0) && ($#$pars > 0) ) {
955: pop(@$pars);
956: pop(@Apache::lonxml::pwd);
957: }
958: }
959: if ($top_empty && $depth >= 0) {
960: #never found the end tag ran out of text, throw error send back blank
961: &error('Never found end tag for <'.$tag.
962: '> current string <pre>'.
1.314 albertel 963: &HTML::Entities::encode($result,'<>&"').
1.270 albertel 964: '</pre>');
965: if ($gotfullstack) {
966: my $newstring='</'.$tag.'>'.$result;
967: &Apache::lonxml::newparser($pars,\$newstring);
968: }
969: $result='';
970: }
971: } else {
972: while ($#$pars > -1) {
973: while ($token = $$pars[-1]->get_token) {
974: #&Apache::lonxml::debug("s token:$token->[0]:$depth:$token->[1]");
975: if (($token->[0] eq 'T')||($token->[0] eq 'C')||
976: ($token->[0] eq 'D')) {
977: $result.=$token->[1];
978: } elsif ($token->[0] eq 'PI') {
979: $result.=$token->[2];
980: } elsif ($token->[0] eq 'S') {
981: if ( $token->[1] =~ /^$tag$/i) {
982: $$pars[-1]->unget_token($token); last;
983: } else {
984: $result.=$token->[4];
985: }
986: if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_ON$/i) { $Apache::lonxml::usestyle=1; }
987: if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_OFF$/i) { $Apache::lonxml::usestyle=0; }
988: } elsif ($token->[0] eq 'E') {
989: $result.=$token->[2];
990: }
991: }
992: if (($#$pars > 0) ) {
993: pop(@$pars);
994: pop(@Apache::lonxml::pwd);
995: } else { last; }
996: }
997: }
998: #&Apache::lonxml::debug("Exit:$result:");
999: return $result
1.19 albertel 1000: }
1001:
1.23 albertel 1002: sub newparser {
1003: my ($parser,$contentref,$dir) = @_;
1.167 albertel 1004: push (@$parser,HTML::LCParser->new($contentref));
1.56 albertel 1005: $$parser['-1']->xml_mode('1');
1.23 albertel 1006: if ( $dir eq '' ) {
1007: push (@Apache::lonxml::pwd, $Apache::lonxml::pwd[$#Apache::lonxml::pwd]);
1008: } else {
1009: push (@Apache::lonxml::pwd, $dir);
1010: }
1011: }
1.1 sakharuk 1012:
1.8 albertel 1013: sub parstring {
1014: my ($token) = @_;
1015: my $temp='';
1.142 albertel 1016: foreach (@{$token->[3]}) {
1.35 www 1017: unless ($_=~/\W/) {
1.42 albertel 1018: my $val=$token->[2]->{$_};
1.231 albertel 1019: $val =~ s/([\%\@\\\"\'])/\\$1/g;
1.51 albertel 1020: #if ($val =~ m/^[\%\@]/) { $val="\\".$val; }
1.267 sakharuk 1021: $temp .= "my \$$_=\"$val\";";
1.20 albertel 1022: }
1.142 albertel 1023: }
1.8 albertel 1024: return $temp;
1025: }
1.22 albertel 1026:
1.34 www 1027: sub writeallows {
1.126 www 1028: unless ($#extlinks>=0) { return; }
1.34 www 1029: my $thisurl='/res/'.&Apache::lonnet::declutter(shift);
1.111 www 1030: if ($ENV{'httpref.'.$thisurl}) {
1031: $thisurl=$ENV{'httpref.'.$thisurl};
1032: }
1.34 www 1033: my $thisdir=$thisurl;
1034: $thisdir=~s/\/[^\/]+$//;
1035: my %httpref=();
1.142 albertel 1036: foreach (@extlinks) {
1.34 www 1037: $httpref{'httpref.'.
1.125 www 1038: &Apache::lonnet::hreflocation($thisdir,$_)}=$thisurl;
1.142 albertel 1039: }
1.126 www 1040: @extlinks=();
1.34 www 1041: &Apache::lonnet::appenv(%httpref);
1042: }
1043:
1.281 albertel 1044: sub register_ssi {
1045: my ($url,%form)=@_;
1046: push (@Apache::lonxml::ssi_info,{'url'=>$url,'form'=>\%form});
1047: return '';
1048: }
1049:
1050: sub do_registered_ssi {
1051: foreach my $info (@Apache::lonxml::ssi_info) {
1052: my %form=%{ $info->{'form'}};
1053: my $url=$info->{'url'};
1054: &Apache::lonnet::ssi($url,%form);
1055: }
1056: }
1.66 www 1057: #
1058: # Afterburner handles anchors, highlights and links
1059: #
1060: sub afterburn {
1061: my $result=shift;
1.154 albertel 1062: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
1063: ['highlight','anchor','link']);
1.66 www 1064: if ($ENV{'form.highlight'}) {
1.142 albertel 1065: foreach (split(/\,/,$ENV{'form.highlight'})) {
1.66 www 1066: my $anchorname=$_;
1067: my $matchthis=$anchorname;
1068: $matchthis=~s/\_+/\\s\+/g;
1069: $result=~s/($matchthis)/\<font color=\"red\"\>$1\<\/font\>/gs;
1.142 albertel 1070: }
1.66 www 1071: }
1072: if ($ENV{'form.link'}) {
1.142 albertel 1073: foreach (split(/\,/,$ENV{'form.link'})) {
1.66 www 1074: my ($anchorname,$linkurl)=split(/\>/,$_);
1075: my $matchthis=$anchorname;
1076: $matchthis=~s/\_+/\\s\+/g;
1077: $result=~s/($matchthis)/\<a href=\"$linkurl\"\>$1\<\/a\>/gs;
1.142 albertel 1078: }
1.66 www 1079: }
1080: if ($ENV{'form.anchor'}) {
1081: my $anchorname=$ENV{'form.anchor'};
1082: my $matchthis=$anchorname;
1083: $matchthis=~s/\_+/\\s\+/g;
1084: $result=~s/($matchthis)/\<a name=\"$anchorname\"\>$1\<\/a\>/s;
1085: $result.=(<<"ENDSCRIPT");
1.226 albertel 1086: <script type="text/javascript">
1.66 www 1087: document.location.hash='$anchorname';
1088: </script>
1089: ENDSCRIPT
1090: }
1091: return $result;
1092: }
1093:
1.79 www 1094: sub storefile {
1095: my ($file,$contents)=@_;
1.290 albertel 1096: &Apache::lonnet::correct_line_ends(\$contents);
1.79 www 1097: if (my $fh=Apache::File->new('>'.$file)) {
1098: print $fh $contents;
1099: $fh->close();
1.271 www 1100: return 1;
1.147 albertel 1101: } else {
1.271 www 1102: &warning("Unable to save file $file");
1103: return 0;
1.79 www 1104: }
1105: }
1106:
1.151 albertel 1107: sub createnewhtml {
1108: my $filecontents=(<<SIMPLECONTENT);
1.78 www 1109: <html>
1110: <head>
1111: <title>
1112: Title of Document Goes Here
1113: </title>
1114: </head>
1115: <body bgcolor="#FFFFFF">
1116:
1117: Body of Document Goes Here
1118:
1119: </body>
1120: </html>
1121: SIMPLECONTENT
1.151 albertel 1122: return $filecontents;
1123: }
1124:
1.274 albertel 1125: sub createnewsty {
1126: my $filecontents=(<<SIMPLECONTENT);
1127: <definetag name="">
1128: <render>
1129: <web></web>
1130: <tex></tex>
1131: </render>
1132: </definetag>
1133: SIMPLECONTENT
1134: return $filecontents;
1135: }
1136:
1.147 albertel 1137:
1.151 albertel 1138: sub inserteditinfo {
1.274 albertel 1139: my ($result,$filecontents,$filetype)=@_;
1.314 albertel 1140: $filecontents = &HTML::Entities::encode($filecontents,'<>&"');
1.147 albertel 1141: # my $editheader='<a href="#editsection">Edit below</a><hr />';
1.274 albertel 1142: my $xml_help = '';
1143: if ($filetype eq 'html') {
1144: $xml_help=Apache::loncommon::helpLatexCheatsheet();
1145: }
1146: my $cleanbut = '';
1147: if ($filetype eq 'html') {
1.280 www 1148: $cleanbut='<input type="submit" name="attemptclean" value="'.
1149: &mt('Save and then attempt to clean HTML').'" />';
1.274 albertel 1150: }
1.254 albertel 1151: my $titledisplay=&display_title();
1.280 www 1152: my %lt=&Apache::lonlocal::texthash('st' => 'Save this',
1153: 'vi' => 'View',
1154: 'ed' => 'Edit');
1.161 albertel 1155: my $buttons=(<<BUTTONS);
1.274 albertel 1156: $cleanbut
1.304 matthew 1157: <input type="submit" name="savethisfile" accesskey="s" value="$lt{'st'}" />
1158: <input type="submit" name="viewmode" accesskey="v" value="$lt{'vi'}" />
1.161 albertel 1159: BUTTONS
1.78 www 1160: my $editfooter=(<<ENDFOOTER);
1161: <hr />
1162: <a name="editsection" />
1163: <form method="post">
1.240 albertel 1164: $xml_help
1.280 www 1165: <input type="hidden" name="editmode" value="$lt{'ed'}" />
1.170 www 1166: $buttons<br />
1.78 www 1167: <textarea cols="80" rows="40" name="filecont">$filecontents</textarea>
1.170 www 1168: <br />$buttons
1.78 www 1169: <br />
1170: </form>
1.254 albertel 1171: $titledisplay
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");
1.298 albertel 1326: }
1.22 albertel 1327: }
1.49 albertel 1328:
1.22 albertel 1329: sub error {
1.205 www 1330: $errorcount++;
1.300 albertel 1331: my $request=$Apache::lonxml::request;
1332: if (!$request) { $request=Apache->request; }
1.74 albertel 1333: if (($Apache::lonxml::debug eq 1) || ($ENV{'request.state'} eq 'construct') ) {
1.166 matthew 1334: # If printing in construction space, put the error inside <pre></pre>
1.309 albertel 1335: push(@Apache::lonxml::error_messages,
1336: $Apache::lonxml::warnings_error_header.
1337: "<b>ERROR:</b>".join("<br />\n",@_)."<br />\n");
1.295 albertel 1338: $Apache::lonxml::warnings_error_header='';
1.52 albertel 1339: } else {
1.309 albertel 1340: push(@Apache::lonxml::error_messages,
1341: "<b>An Error occured while processing this resource. The instructor has been notified.</b> <br />");
1.52 albertel 1342: #notify author
1.146 albertel 1343: &Apache::lonmsg::author_res_msg($ENV{'request.filename'},join('<br />',@_));
1.52 albertel 1344: #notify course
1345: if ( $ENV{'request.course.id'} ) {
1.209 www 1346: my (undef,%users)=&Apache::lonfeedback::decide_receiver(undef,0,1,1,1);
1.143 www 1347: my $declutter=&Apache::lonnet::declutter($ENV{'request.filename'});
1.209 www 1348: foreach (keys %users) {
1349: my ($user,$domain) = split(/:/, $_);
1.143 www 1350: &Apache::lonmsg::user_normal_msg($user,$domain,
1.146 albertel 1351: "Error [$declutter]",join('<br />',@_));
1.52 albertel 1352: }
1353: }
1354: }
1.22 albertel 1355: }
1.49 albertel 1356:
1.22 albertel 1357: sub warning {
1.295 albertel 1358: $warningcount++;
1.261 albertel 1359:
1.295 albertel 1360: if ($ENV{'form.grade_target'} ne 'tex') {
1361: if ($ENV{'request.state'} eq 'construct' || $Apache::lonxml::debug) {
1.300 albertel 1362: my $request=$Apache::lonxml::request;
1363: if (!$request) { $request=Apache->request; }
1.309 albertel 1364: push(@Apache::lonxml::warning_messages,
1365: $Apache::lonxml::warnings_error_header.
1366: "<b>W</b>ARNING<b>:</b>".join('<br />',@_)."<br />\n");
1.295 albertel 1367: $Apache::lonxml::warnings_error_header='';
1368: }
1369: }
1.309 albertel 1370: }
1371:
1372: sub info {
1373: if ($ENV{'form.grade_target'} ne 'tex'
1374: && $ENV{'request.state'} eq 'construct') {
1375: push(@Apache::lonxml::info_messages,join('<br />',@_)."<br />\n");
1376: }
1377: }
1378:
1379: sub message_location {
1380: return '__LONCAPA_INTERNAL_MESSAGE_LOCATION__';
1381: }
1382:
1383: sub add_messages {
1384: my ($msg)=@_;
1385: my $result=join(' ',
1386: @Apache::lonxml::info_messages,
1387: @Apache::lonxml::error_messages,
1388: @Apache::lonxml::warning_messages);
1389: undef(@Apache::lonxml::info_messages);
1390: undef(@Apache::lonxml::error_messages);
1391: undef(@Apache::lonxml::warning_messages);
1392: $$msg=~s/__LONCAPA_INTERNAL_MESSAGE_LOCATION__/$result/;
1393: $$msg=~s/__LONCAPA_INTERNAL_MESSAGE_LOCATION__//g;
1.83 albertel 1394: }
1395:
1396: sub get_param {
1.213 albertel 1397: my ($param,$parstack,$safeeval,$context,$case_insensitive) = @_;
1398: if ( ! $context ) { $context = -1; }
1399: my $args ='';
1400: if ( $#$parstack > (-2-$context) ) { $args=$$parstack[$context]; }
1.297 sakharuk 1401: if ( ! $Apache::lonxml::usestyle ) {
1402: $args=$Apache::lonxml::style_values.$args;
1403: }
1.213 albertel 1404: if ( ! $args ) { return undef; }
1405: if ( $case_insensitive ) {
1406: if ($args =~ s/(my \$)(\Q$param\E)(=\")/$1.lc($2).$3/ei) {
1407: return &Apache::run::run("{$args;".'return $'.$param.'}',
1408: $safeeval); #'
1409: } else {
1410: return undef;
1411: }
1412: } else {
1413: if ( $args =~ /my \$\Q$param\E=\"/ ) {
1414: return &Apache::run::run("{$args;".'return $'.$param.'}',
1415: $safeeval); #'
1416: } else {
1417: return undef;
1418: }
1419: }
1.22 albertel 1420: }
1421:
1.132 albertel 1422: sub get_param_var {
1.213 albertel 1423: my ($param,$parstack,$safeeval,$context,$case_insensitive) = @_;
1.132 albertel 1424: if ( ! $context ) { $context = -1; }
1425: my $args ='';
1426: if ( $#$parstack > (-2-$context) ) { $args=$$parstack[$context]; }
1.297 sakharuk 1427: if ( ! $Apache::lonxml::usestyle ) {
1428: $args=$Apache::lonxml::style_values.$args;
1429: }
1.230 albertel 1430: &Apache::lonxml::debug("Args are $args param is $param");
1.213 albertel 1431: if ($case_insensitive) {
1432: if (! ($args=~s/(my \$)(\Q$param\E)(=\")/$1.lc($2).$3/ei)) {
1433: return undef;
1434: }
1435: } elsif ( $args !~ /my \$\Q$param\E=\"/ ) { return undef; }
1.132 albertel 1436: my $value=&Apache::run::run("{$args;".'return $'.$param.'}',$safeeval); #'
1.230 albertel 1437: &Apache::lonxml::debug("first run is $value");
1438: if ($value =~ /^[\$\@\%]\w+$/) {
1439: &Apache::lonxml::debug("doing second");
1440: my @result=&Apache::run::run("return $value",$safeeval,1);
1441: if (!defined($result[0])) {
1442: return $value
1443: } else {
1444: if (wantarray) { return @result; } else { return $result[0]; }
1445: }
1.132 albertel 1446: } else {
1447: return $value;
1448: }
1449: }
1450:
1.74 albertel 1451: sub register_insert {
1.75 albertel 1452: my @data = split /\n/, &Apache::lonnet::getfile('/home/httpd/lonTabs/insertlist.tab');
1.74 albertel 1453: my $i;
1.76 albertel 1454: my $tagnum=0;
1.74 albertel 1455: my @order;
1456: for ($i=0;$i < $#data; $i++) {
1457: my $line = $data[$i];
1458: if ( $line =~ /^\#/ || $line =~ /^\s*\n/) { next; }
1459: if ( $line =~ /TABLE/ ) { last; }
1.268 bowersj2 1460: my ($tag,$descrip,$color,$function,$show,$helpfile,$helpdesc) = split(/,/, $line);
1.135 albertel 1461: if ($tag) {
1462: $insertlist{"$tagnum.tag"} = $tag;
1463: $insertlist{"$tagnum.description"} = $descrip;
1464: $insertlist{"$tagnum.color"} = $color;
1465: $insertlist{"$tagnum.function"} = $function;
1466: if (!defined($show)) { $show='yes'; }
1467: $insertlist{"$tagnum.show"}= $show;
1.268 bowersj2 1468: $insertlist{"$tagnum.helpfile"} = $helpfile;
1469: $insertlist{"$tagnum.helpdesc"} = $helpdesc;
1.135 albertel 1470: $insertlist{"$tag.num"}=$tagnum;
1471: $tagnum++;
1472: }
1.74 albertel 1473: }
1.76 albertel 1474: $i++; #skipping TABLE line
1475: $tagnum = 0;
1.74 albertel 1476: for (;$i < $#data;$i++) {
1477: my $line = $data[$i];
1.76 albertel 1478: my ($mnemonic,@which) = split(/ +/,$line);
1479: my $tag = $insertlist{"$tagnum.tag"};
1.144 matthew 1480: for (my $j=0;$j <=$#which;$j++) {
1.74 albertel 1481: if ( $which[$j] eq 'Y' ) {
1.76 albertel 1482: if ($insertlist{"$j.show"} ne 'no') {
1483: push(@{ $insertlist{"$tag.which"} },$j);
1484: }
1.74 albertel 1485: }
1486: }
1.76 albertel 1487: $tagnum++;
1.74 albertel 1488: }
1489: }
1.98 albertel 1490:
1491: sub description {
1492: my ($token)=@_;
1.138 albertel 1493: my $tagnum;
1494: my $tag=$token->[1];
1495: foreach my $namespace (reverse @Apache::lonxml::namespace) {
1496: my $testtag=$namespace.'::'.$tag;
1497: $tagnum=$insertlist{"$testtag.num"};
1498: if (defined($tagnum)) { last; }
1499: }
1500: if (!defined ($tagnum)) { $tagnum=$Apache::lonxml::insertlist{"$tag.num"}; }
1501: return $insertlist{$tagnum.'.description'};
1.268 bowersj2 1502: }
1503:
1504: # Returns a list containing the help file, and the description
1505: sub helpinfo {
1506: my ($token)=@_;
1507: my $tagnum;
1508: my $tag=$token->[1];
1509: foreach my $namespace (reverse @Apache::lonxml::namespace) {
1510: my $testtag=$namespace.'::'.$tag;
1511: $tagnum=$insertlist{"$testtag.num"};
1512: if (defined($tagnum)) { last; }
1513: }
1514: if (!defined ($tagnum)) { $tagnum=$Apache::lonxml::insertlist{"$tag.num"}; }
1515: return ($insertlist{$tagnum.'.helpfile'}, $insertlist{$tagnum.'.helpdesc'});
1.98 albertel 1516: }
1.123 albertel 1517:
1518: # ----------------------------------------------------------------- whichuser
1519: # returns a list of $symb, $courseid, $domain, $name that is correct for
1520: # calls to lonnet functions for this setup.
1521: # - looks for form.grade_ parameters
1522: sub whichuser {
1.262 matthew 1523: my ($passedsymb)=@_;
1.245 albertel 1524: my ($symb,$courseid,$domain,$name,$publicuser);
1.123 albertel 1525: if (defined($ENV{'form.grade_symb'})) {
1526: my $tmp_courseid=$ENV{'form.grade_courseid'};
1.269 albertel 1527: my $allowed=&Apache::lonnet::allowed('vgr',$tmp_courseid);
1.123 albertel 1528: if ($allowed) {
1529: $symb=$ENV{'form.grade_symb'};
1530: $courseid=$ENV{'form.grade_courseid'};
1531: $domain=$ENV{'form.grade_domain'};
1532: $name=$ENV{'form.grade_username'};
1533: }
1.134 albertel 1534: } else {
1.262 matthew 1535: if (!$passedsymb) {
1536: $symb=&Apache::lonnet::symbread();
1537: } else {
1538: $symb=$passedsymb;
1539: }
1.244 albertel 1540: $courseid=$ENV{'request.course.id'};
1541: $domain=$ENV{'user.domain'};
1542: $name=$ENV{'user.name'};
1543: if ($name eq 'public' && $domain eq 'public') {
1544: if (!defined($ENV{'form.username'})) {
1545: $ENV{'form.username'}.=time.rand(10000000);
1546: }
1547: $name.=$ENV{'form.username'};
1548: }
1.123 albertel 1549: }
1.245 albertel 1550: return ($symb,$courseid,$domain,$name,$publicuser);
1.123 albertel 1551: }
1552:
1.1 sakharuk 1553: 1;
1554: __END__
1.68 www 1555:
1556:
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