Annotation of loncom/xml/lonxml.pm, revision 1.340
1.2 sakharuk 1: # The LearningOnline Network with CAPA
1.3 sakharuk 2: # XML Parser Module
1.2 sakharuk 3: #
1.340 ! albertel 4: # $Id: lonxml.pm,v 1.339 2004/10/05 18:51:50 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: #
1.316 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 $warningcount @htmlareafields);
1.1 sakharuk 44: use strict;
1.167 albertel 45: use HTML::LCParser();
1.161 albertel 46: use HTML::TreeBuilder();
47: use HTML::Entities();
48: use Safe();
49: use Safe::Hole();
50: use Math::Cephes();
51: use Math::Random();
52: use Opcode();
1.271 www 53: use POSIX qw(strftime);
1.339 albertel 54: use Time::HiRes qw( gettimeofday tv_interval );
1.266 bowersj2 55:
1.72 albertel 56: sub register {
1.141 albertel 57: my ($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 $output;
165: }
166:
167: sub xmlend {
1.335 sakharuk 168: my ($target,$parser)=@_;
1.278 www 169: my $mode='xml';
170: my $status='OPEN';
171: if ($Apache::lonhomework::parsing_a_problem) {
172: $mode='problem';
173: $status=$Apache::inputtags::status[-1];
174: }
1.335 sakharuk 175: my $discussion=&Apache::lonfeedback::list_discussion($mode,$status);
1.334 sakharuk 176: if ($target eq 'tex') {
1.335 sakharuk 177: $discussion.='<tex>\keephidden{ENDOFPROBLEM}\vskip 0.5mm\noindent\makebox[\textwidth/$number_of_columns][b]{\hrulefill}\end{document}</tex>';
1.334 sakharuk 178: &Apache::lonxml::newparser($parser,\$discussion,'');
179: return '';
180: } else {
181: return $discussion.'</html>';
182: }
1.119 www 183: }
184:
185: sub tokeninputfield {
1.120 www 186: my $defhost=$Apache::lonnet::perlvar{'lonHostID'};
187: $defhost=~tr/a-z/A-Z/;
1.119 www 188: return (<<ENDINPUTFIELD)
1.226 albertel 189: <script type="text/javascript">
1.120 www 190: function updatetoken() {
191: var comp=new Array;
192: var barcode=unescape(document.tokeninput.barcode.value);
193: comp=barcode.split('*');
194: if (typeof(comp[0])!="undefined") {
195: document.tokeninput.codeone.value=comp[0];
196: }
197: if (typeof(comp[1])!="undefined") {
198: document.tokeninput.codetwo.value=comp[1];
199: }
200: if (typeof(comp[2])!="undefined") {
201: comp[2]=comp[2].toUpperCase();
202: document.tokeninput.codethree.value=comp[2];
203: }
204: document.tokeninput.barcode.value='';
205: }
206: </script>
207: <form method="post" name="tokeninput">
1.119 www 208: <table border="2" bgcolor="#FFFFBB">
209: <tr><th>DocID Checkin</th></tr>
210: <tr><td>
211: <table>
212: <tr>
213: <td>Scan in Barcode</td>
1.120 www 214: <td><input type="text" size="22" name="barcode"
215: onChange="updatetoken()"/></td>
1.119 www 216: </tr>
217: <tr><td><i>or</i> Type in DocID</td>
218: <td>
219: <input type="text" size="5" name="codeone" />
1.120 www 220: <b><font size="+2">*</font></b>
1.119 www 221: <input type="text" size="5" name="codetwo" />
1.120 www 222: <b><font size="+2">*</font></b>
223: <input type="text" size="10" name="codethree" value="$defhost"
224: onChange="this.value=this.value.toUpperCase()" />
1.119 www 225: </td></tr>
226: </table>
227: </td></tr>
228: <tr><td><input type="submit" value="Check in DocID" /></td></tr>
229: </table>
230: </form>
231: ENDINPUTFIELD
1.112 www 232: }
233:
1.116 www 234: sub maketoken {
1.118 www 235: my ($symb,$tuname,$tudom,$tcrsid)=@_;
1.112 www 236: unless ($symb) {
237: $symb=&Apache::lonnet::symbread();
238: }
239: unless ($tuname) {
240: $tuname=$ENV{'user.name'};
241: $tudom=$ENV{'user.domain'};
242: $tcrsid=$ENV{'request.course.id'};
243: }
1.116 www 244:
1.118 www 245: return &Apache::lonnet::checkout($symb,$tuname,$tudom,$tcrsid);
246: }
247:
248: sub printtokenheader {
1.133 albertel 249: my ($target,$token,$tsymb,$tcrsid,$tudom,$tuname)=@_;
1.116 www 250: unless ($token) { return ''; }
1.118 www 251:
1.133 albertel 252: my ($symb,$courseid,$domain,$name) = &Apache::lonxml::whichuser();
253: unless ($tsymb) {
254: $tsymb=$symb;
1.118 www 255: }
256: unless ($tuname) {
1.133 albertel 257: $tuname=$name;
258: $tudom=$domain;
259: $tcrsid=$courseid;
1.118 www 260: }
1.114 www 261:
262: my %reply=&Apache::lonnet::get('environment',
263: ['firstname','middlename','lastname','generation'],
264: $tudom,$tuname);
265: my $plainname=$reply{'firstname'}.' '.
266: $reply{'middlename'}.' '.
267: $reply{'lastname'}.' '.
268: $reply{'generation'};
269:
1.112 www 270: if ($target eq 'web') {
1.145 www 271: my %idhash=&Apache::lonnet::idrget($tudom,($tuname));
1.115 www 272: return
1.221 albertel 273: '<img align="right" src="/cgi-bin/barcode.png?encode='.$token.'" />'.
1.284 www 274: &mt('Checked out for').' '.$plainname.
275: '<br />'.&mt('User').': '.$tuname.' at '.$tudom.
276: '<br />'.&mt('ID').': '.$idhash{$tuname}.
277: '<br />'.&mt('CourseID').': '.$tcrsid.
278: '<br />'.&mt('Course').': '.$ENV{'course.'.$tcrsid.'.description'}.
279: '<br />'.&mt('DocID').': '.$token.
280: '<br />'.&mt('Time').': '.&Apache::lonlocal::locallocaltime().'<hr />';
1.112 www 281: } else {
1.121 albertel 282: return $token;
1.112 www 283: }
1.68 www 284: }
285:
1.70 www 286: sub fontsettings() {
287: my $headerstring='';
288: if (($ENV{'browser.os'} eq 'mac') && (!$ENV{'browser.mathml'})) {
1.248 albertel 289: $headerstring.=
290: '<meta Content-Type="text/html; charset=x-mac-roman">';
1.263 albertel 291: } elsif (!$ENV{'browser.mathml'} && $ENV{'browser.unicode'}) {
1.248 albertel 292: $headerstring.=
293: '<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />';
1.70 www 294: }
295: return $headerstring;
1.68 www 296: }
297:
1.48 albertel 298: sub printalltags {
299: my $temp;
300: foreach $temp (sort keys %Apache::lonxml::alltags) {
1.141 albertel 301: &Apache::lonxml::debug("$temp -- ".
302: join(',',@{ $Apache::lonxml::alltags{$temp} }));
1.48 albertel 303: }
304: }
1.31 sakharuk 305:
1.3 sakharuk 306: sub xmlparse {
1.172 albertel 307: my ($request,$target,$content_file_string,$safeinit,%style_for_target) = @_;
1.96 albertel 308:
1.172 albertel 309: &setup_globals($request,$target);
1.232 albertel 310: &Apache::inputtags::initialize_inputtags();
311: &Apache::outputtags::initialize_outputtags();
312: &Apache::edit::initialize_edit();
1.287 albertel 313: &Apache::londefdef::initialize_londefdef();
1.244 albertel 314:
1.178 www 315: #
316: # do we have a course style file?
317: #
318:
1.208 albertel 319: if ($ENV{'request.course.id'} && $ENV{'request.state'} ne 'construct') {
1.178 www 320: my $bodytext=
321: $ENV{'course.'.$ENV{'request.course.id'}.'.default_xml_style'};
322: if ($bodytext) {
1.337 albertel 323: foreach my $file (split(',',$bodytext)) {
324: my $location=&Apache::lonnet::filelocation('',$file);
325: my $styletext=&Apache::lonnet::getfile($location);
326: if ($styletext ne '-1') {
327: %style_for_target = (%style_for_target,
328: &Apache::style::styleparser($target,$styletext));
329: }
330: }
331: }
1.292 sakharuk 332: } elsif ($ENV{'construct.style'} && ($ENV{'request.state'} eq 'construct')) {
333: my $location=&Apache::lonnet::filelocation('',$ENV{'construct.style'});
1.291 sakharuk 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: }
1.178 www 339: }
1.255 sakharuk 340: #&printalltags();
1.16 albertel 341: my @pars = ();
1.23 albertel 342: my $pwd=$ENV{'request.filename'};
343: $pwd =~ s:/[^/]*$::;
344: &newparser(\@pars,\$content_file_string,$pwd);
1.24 sakharuk 345:
1.3 sakharuk 346: my $safeeval = new Safe;
1.40 albertel 347: my $safehole = new Safe::Hole;
1.82 ng 348: &init_safespace($target,$safeeval,$safehole,$safeinit);
1.3 sakharuk 349: #-------------------- Redefinition of the target in the case of compound target
350:
351: ($target, my @tenta) = split('&&',$target);
352:
1.150 albertel 353: my @stack = ();
1.3 sakharuk 354: my @parstack = ();
1.17 albertel 355: &initdepth;
1.67 www 356:
1.101 albertel 357: my $finaloutput = &inner_xmlparse($target,\@stack,\@parstack,\@pars,
358: $safeeval,\%style_for_target);
1.255 sakharuk 359:
1.125 www 360: if ($ENV{'request.uri'}) {
361: &writeallows($ENV{'request.uri'});
362: }
1.281 albertel 363: &do_registered_ssi();
1.204 albertel 364: if ($Apache::lonxml::counter_changed) { &store_counter() }
1.3 sakharuk 365: return $finaloutput;
1.106 www 366: }
367:
368: sub htmlclean {
1.107 www 369: my ($raw,$full)=@_;
1.106 www 370:
371: my $tree = HTML::TreeBuilder->new;
372: $tree->ignore_unknown(0);
1.140 albertel 373:
1.106 www 374: $tree->parse($raw);
375:
1.107 www 376: my $output= $tree->as_HTML(undef,' ');
1.140 albertel 377:
1.161 albertel 378: $output=~s/\<(br|hr|img|meta|allow)(.*?)\>/\<$1$2 \/\>/gis;
1.111 www 379: $output=~s/\<\/(br|hr|img|meta|allow)\>//gis;
1.107 www 380: unless ($full) {
381: $output=~s/\<[\/]*(body|head|html)\>//gis;
382: }
1.106 www 383:
384: $tree = $tree->delete;
385:
386: return $output;
1.15 albertel 387: }
388:
1.191 albertel 389: sub latex_special_symbols {
1.272 albertel 390: my ($string,$where)=@_;
1.235 sakharuk 391: if ($where eq 'header') {
1.272 albertel 392: $string =~ s/(\\|_|\^)/ /g;
1.311 albertel 393: $string =~ s/(\$|%|\{|\})/\\$1/g;
1.273 sakharuk 394: $string =~ s/_/ /g;
1.311 albertel 395: $string=&Apache::lonprintout::character_chart($string);
396: # any & or # leftover should be safe to just escape
397: $string=~s/([^\\])\&/$1\\\&/g;
398: $string=~s/([^\\])\#/$1\\\#/g;
1.229 sakharuk 399: } else {
1.312 albertel 400: $string=~s/\\/\\ensuremath{\\backslash}/g;
1.313 albertel 401: $string=~s/([^\\]|^)\%/$1\\\%/g;
1.329 sakharuk 402: $string=~s/([^\\]|^)\$/$1\\\$/g;
403: $string=~s/([^\\])\_/$1\\_/g;
1.310 sakharuk 404: $string=~s/\$\$/\$\\\$/g;
1.329 sakharuk 405: $string=~s/\_\_/\_\\\_/g;
1.310 sakharuk 406: $string=~s/\#\#/\#\\\#/g;
1.313 albertel 407: $string=~s/([^\\]|^)(\~|\^)/$1\\$2\\strut /g;
1.310 sakharuk 408: $string=~s/(>|<)/\\ensuremath\{$1\}/g; #more or less
1.311 albertel 409: $string=&Apache::lonprintout::character_chart($string);
410: # any & or # leftover should be safe to just escape
1.313 albertel 411: $string=~s/([^\\]|^)\&/$1\\\&/g;
412: $string=~s/([^\\]|^)\#/$1\\\#/g;
1.332 sakharuk 413: $string=~s/\|/\$\\mid\$/g;
1.310 sakharuk 414: #single { or } How to escape?
1.229 sakharuk 415: }
1.272 albertel 416: return $string;
1.188 sakharuk 417: }
418:
1.101 albertel 419: sub inner_xmlparse {
420: my ($target,$stack,$parstack,$pars,$safeeval,$style_for_target)=@_;
421: my $finaloutput = '';
422: my $result;
423: my $token;
1.258 albertel 424: my $dontpop=0;
1.101 albertel 425: while ( $#$pars > -1 ) {
426: while ($token = $$pars['-1']->get_token) {
1.261 albertel 427: if (($token->[0] eq 'T') || ($token->[0] eq 'C') ) {
1.101 albertel 428: if ($metamode<1) {
1.190 albertel 429: my $text=$token->[1];
1.193 albertel 430: if ($token->[0] eq 'C' && $target eq 'tex') {
1.239 sakharuk 431: $text = '';
432: # $text = '%'.$text."\n";
1.182 sakharuk 433: }
1.190 albertel 434: $result.=$text;
1.101 albertel 435: }
1.261 albertel 436: } elsif (($token->[0] eq 'D')) {
437: if ($metamode<1 && $target eq 'web') {
438: my $text=$token->[1];
439: $result.=$text;
440: }
1.101 albertel 441: } elsif ($token->[0] eq 'PI') {
1.261 albertel 442: if ($metamode<1 && $target eq 'web') {
1.101 albertel 443: $result=$token->[2];
444: }
445: } elsif ($token->[0] eq 'S') {
1.140 albertel 446: # add tag to stack
1.101 albertel 447: push (@$stack,$token->[1]);
448: # add parameters list to another stack
449: push (@$parstack,&parstring($token));
1.140 albertel 450: &increasedepth($token);
1.212 albertel 451: if ($Apache::lonxml::usestyle &&
452: exists($$style_for_target{$token->[1]})) {
453: $Apache::lonxml::usestyle=0;
454: my $string=$$style_for_target{$token->[1]}.
455: '<LONCAPA_INTERNAL_TURN_STYLE_ON />';
456: &Apache::lonxml::newparser($pars,\$string);
1.257 albertel 457: $Apache::lonxml::style_values=$$parstack[-1];
1.259 albertel 458: $Apache::lonxml::style_end_values=$$parstack[-1];
1.101 albertel 459: } else {
460: $result = &callsub("start_$token->[1]", $target, $token, $stack,
461: $parstack, $pars, $safeeval, $style_for_target);
1.140 albertel 462: }
1.101 albertel 463: } elsif ($token->[0] eq 'E') {
1.212 albertel 464: if ($Apache::lonxml::usestyle &&
465: exists($$style_for_target{'/'."$token->[1]"})) {
466: $Apache::lonxml::usestyle=0;
467: my $string=$$style_for_target{'/'.$token->[1]}.
1.258 albertel 468: '<LONCAPA_INTERNAL_TURN_STYLE_ON end="'.$token->[1].'" />';
1.212 albertel 469: &Apache::lonxml::newparser($pars,\$string);
1.259 albertel 470: $Apache::lonxml::style_values=$Apache::lonxml::style_end_values;
471: $Apache::lonxml::style_end_values='';
1.258 albertel 472: $dontpop=1;
1.101 albertel 473: } else {
1.258 albertel 474: #clear out any tags that didn't end
475: while ($token->[1] ne $$stack['-1'] && ($#$stack > -1)) {
476: my $lasttag=$$stack[-1];
1.317 albertel 477: if ($token->[1] =~ /^\Q$lasttag\E$/i) {
1.258 albertel 478: &Apache::lonxml::warning('Using tag </'.$token->[1].'> on line '.$token->[3].' as end tag to <'.$$stack[-1].'>');
479: last;
480: } else {
481: &Apache::lonxml::warning('Found tag </'.$token->[1].'> on line '.$token->[3].' when looking for </'.$$stack[-1].'> in file');
482: &end_tag($stack,$parstack,$token);
483: }
484: }
485: $result = &callsub("end_$token->[1]", $target, $token, $stack,
486: $parstack, $pars,$safeeval, $style_for_target);
1.101 albertel 487: }
488: } else {
489: &Apache::lonxml::error("Unknown token event :$token->[0]:$token->[1]:");
490: }
491: #evaluate variable refs in result
1.282 albertel 492: if ($Apache::lonxml::post_evaluate &&$result ne "") {
1.257 albertel 493: my $extras;
494: if (!$Apache::lonxml::usestyle) {
495: $extras=$Apache::lonxml::style_values;
496: }
1.101 albertel 497: if ( $#$parstack > -1 ) {
1.257 albertel 498: $result=&Apache::run::evaluate($result,$safeeval,$extras.$$parstack[-1]);
1.101 albertel 499: } else {
1.257 albertel 500: $result= &Apache::run::evaluate($result,$safeeval,$extras);
1.101 albertel 501: }
1.163 albertel 502: }
1.282 albertel 503: $Apache::lonxml::post_evaluate=1;
504:
1.190 albertel 505: if (($token->[0] eq 'T') || ($token->[0] eq 'C') || ($token->[0] eq 'D') ) {
1.249 albertel 506: #Style file definitions should be correct
1.250 albertel 507: if ($target eq 'tex' && ($Apache::lonxml::usestyle)) {
1.311 albertel 508: $result=&latex_special_symbols($result);
1.249 albertel 509: }
1.190 albertel 510: }
511:
1.169 albertel 512: if ($Apache::lonxml::redirection) {
513: $Apache::lonxml::outputstack['-1'] .= $result;
514: } else {
515: $finaloutput.=$result;
516: }
517: $result = '';
518:
1.258 albertel 519: if ($token->[0] eq 'E' && !$dontpop) {
1.101 albertel 520: &end_tag($stack,$parstack,$token);
521: }
1.258 albertel 522: $dontpop=0;
1.224 albertel 523: }
1.212 albertel 524: if ($#$pars > -1) {
525: pop @$pars;
526: pop @Apache::lonxml::pwd;
527: }
1.101 albertel 528: }
529:
530: # if ($target eq 'meta') {
531: # $finaloutput.=&endredirection;
532: # }
533:
1.169 albertel 534:
1.101 albertel 535: if (($ENV{'QUERY_STRING'}) && ($target eq 'web')) {
536: $finaloutput=&afterburn($finaloutput);
1.216 sakharuk 537: }
1.101 albertel 538: return $finaloutput;
539: }
1.67 www 540:
1.318 matthew 541: ##
542: ## Looks to see if there is a subroutine defined for this tag. If so, call it,
543: ## otherwise do not call it as we do not know what it is.
544: ##
1.7 albertel 545: sub callsub {
1.84 albertel 546: my ($sub,$target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.7 albertel 547: my $currentstring='';
1.72 albertel 548: my $nodefault;
1.7 albertel 549: {
1.59 albertel 550: my $sub1;
1.7 albertel 551: no strict 'refs';
1.68 www 552: my $tag=$token->[1];
1.236 www 553: # get utterly rid of extended html tags
554: if ($tag=~/^x\-/i) { return ''; }
1.141 albertel 555: my $space=$Apache::lonxml::alltags{$tag}[-1];
1.68 www 556: if (!$space) {
1.141 albertel 557: $tag=~tr/A-Z/a-z/;
1.68 www 558: $sub=~tr/A-Z/a-z/;
1.141 albertel 559: $space=$Apache::lonxml::alltags{$tag}[-1]
1.68 www 560: }
1.97 albertel 561:
562: my $deleted=0;
563: $Apache::lonxml::curdepth=join('_',@Apache::lonxml::depthcounter);
564: if (($token->[0] eq 'S') && ($target eq 'modified')) {
565: $deleted=&Apache::edit::handle_delete($space,$target,$token,$tagstack,
566: $parstack,$parser,$safeeval,
567: $style);
568: }
569: if (!$deleted) {
570: if ($space) {
1.220 albertel 571: #&Apache::lonxml::debug("Calling sub $sub in $space $metamode");
1.97 albertel 572: $sub1="$space\:\:$sub";
573: ($currentstring,$nodefault) = &$sub1($target,$token,$tagstack,
574: $parstack,$parser,$safeeval,
575: $style);
576: } else {
1.318 matthew 577: if ($target eq 'tex') {
578: # throw away tag name
579: return '';
580: }
1.220 albertel 581: #&Apache::lonxml::debug("NOT Calling sub $sub in $space $metamode");
1.97 albertel 582: if ($metamode <1) {
583: if (defined($token->[4]) && ($metamode < 1)) {
584: $currentstring = $token->[4];
585: } else {
586: $currentstring = $token->[2];
587: }
1.62 sakharuk 588: }
1.7 albertel 589: }
1.97 albertel 590: # &Apache::lonxml::debug("nodefalt:$nodefault:");
591: if ($currentstring eq '' && $nodefault eq '') {
592: if ($target eq 'edit') {
1.220 albertel 593: #&Apache::lonxml::debug("doing default edit for $token->[1]");
1.97 albertel 594: if ($token->[0] eq 'S') {
595: $currentstring = &Apache::edit::tag_start($target,$token);
596: } elsif ($token->[0] eq 'E') {
597: $currentstring = &Apache::edit::tag_end($target,$token);
598: }
599: } elsif ($target eq 'modified') {
600: if ($token->[0] eq 'S') {
601: $currentstring = $token->[4];
602: $currentstring.=&Apache::edit::handle_insert();
1.210 www 603: } elsif ($token->[0] eq 'E') {
604: $currentstring = $token->[2];
605: $currentstring.=&Apache::edit::handle_insertafter($token->[1]);
1.97 albertel 606: } else {
607: $currentstring = $token->[2];
608: }
1.72 albertel 609: }
610: }
1.7 albertel 611: }
612: use strict 'refs';
613: }
614: return $currentstring;
1.82 ng 615: }
616:
1.96 albertel 617: sub setup_globals {
1.172 albertel 618: my ($request,$target)=@_;
619: $Apache::lonxml::request=$request;
1.99 albertel 620: $Apache::lonxml::registered = 0;
1.325 www 621: @Apache::lonxml::htmlareafields=();
1.205 www 622: $errorcount=0;
623: $warningcount=0;
1.207 albertel 624: $Apache::lonxml::default_homework_loaded=0;
1.212 albertel 625: $Apache::lonxml::usestyle=1;
1.204 albertel 626: &init_counter();
1.101 albertel 627: @Apache::lonxml::pwd=();
1.124 albertel 628: @Apache::lonxml::extlinks=();
1.281 albertel 629: @Apache::lonxml::ssi_info=();
1.282 albertel 630: $Apache::lonxml::post_evaluate=1;
1.295 albertel 631: $Apache::lonxml::warnings_error_header='';
1.96 albertel 632: if ($target eq 'meta') {
633: $Apache::lonxml::redirection = 0;
634: $Apache::lonxml::metamode = 1;
635: $Apache::lonxml::evaluate = 1;
636: $Apache::lonxml::import = 0;
1.129 albertel 637: } elsif ($target eq 'answer') {
638: $Apache::lonxml::redirection = 0;
639: $Apache::lonxml::metamode = 1;
640: $Apache::lonxml::evaluate = 1;
641: $Apache::lonxml::import = 1;
1.96 albertel 642: } elsif ($target eq 'grade') {
643: &startredirection;
644: $Apache::lonxml::metamode = 0;
645: $Apache::lonxml::evaluate = 1;
646: $Apache::lonxml::import = 1;
647: } elsif ($target eq 'modified') {
648: $Apache::lonxml::redirection = 0;
649: $Apache::lonxml::metamode = 0;
650: $Apache::lonxml::evaluate = 0;
651: $Apache::lonxml::import = 0;
652: } elsif ($target eq 'edit') {
653: $Apache::lonxml::redirection = 0;
654: $Apache::lonxml::metamode = 0;
655: $Apache::lonxml::evaluate = 0;
656: $Apache::lonxml::import = 0;
1.163 albertel 657: } elsif ($target eq 'analyze') {
658: $Apache::lonxml::redirection = 0;
659: $Apache::lonxml::metamode = 0;
660: $Apache::lonxml::evaluate = 1;
661: $Apache::lonxml::import = 1;
1.96 albertel 662: } else {
663: $Apache::lonxml::redirection = 0;
664: $Apache::lonxml::metamode = 0;
665: $Apache::lonxml::evaluate = 1;
666: $Apache::lonxml::import = 1;
667: }
668: }
669:
1.82 ng 670: sub init_safespace {
671: my ($target,$safeeval,$safehole,$safeinit) = @_;
672: $safeeval->permit("entereval");
673: $safeeval->permit(":base_math");
674: $safeeval->permit("sort");
1.286 albertel 675: $safeeval->permit("time");
1.82 ng 676: $safeeval->deny(":base_io");
1.102 albertel 677: $safehole->wrap(\&Apache::scripttag::xmlparse,$safeeval,'&xmlparse');
1.251 albertel 678: $safehole->wrap(\&Apache::outputtags::multipart,$safeeval,'&multipart');
1.82 ng 679: $safehole->wrap(\&Apache::lonnet::EXT,$safeeval,'&EXT');
1.324 albertel 680: $safehole->wrap(\&Apache::chemresponse::chem_standard_order,$safeeval,
681: '&chem_standard_order');
682:
1.82 ng 683: $safehole->wrap(\&Math::Cephes::asin,$safeeval,'&asin');
684: $safehole->wrap(\&Math::Cephes::acos,$safeeval,'&acos');
685: $safehole->wrap(\&Math::Cephes::atan,$safeeval,'&atan');
686: $safehole->wrap(\&Math::Cephes::sinh,$safeeval,'&sinh');
687: $safehole->wrap(\&Math::Cephes::cosh,$safeeval,'&cosh');
688: $safehole->wrap(\&Math::Cephes::tanh,$safeeval,'&tanh');
689: $safehole->wrap(\&Math::Cephes::asinh,$safeeval,'&asinh');
690: $safehole->wrap(\&Math::Cephes::acosh,$safeeval,'&acosh');
691: $safehole->wrap(\&Math::Cephes::atanh,$safeeval,'&atanh');
692: $safehole->wrap(\&Math::Cephes::erf,$safeeval,'&erf');
693: $safehole->wrap(\&Math::Cephes::erfc,$safeeval,'&erfc');
694: $safehole->wrap(\&Math::Cephes::j0,$safeeval,'&j0');
695: $safehole->wrap(\&Math::Cephes::j1,$safeeval,'&j1');
696: $safehole->wrap(\&Math::Cephes::jn,$safeeval,'&jn');
697: $safehole->wrap(\&Math::Cephes::jv,$safeeval,'&jv');
698: $safehole->wrap(\&Math::Cephes::y0,$safeeval,'&y0');
699: $safehole->wrap(\&Math::Cephes::y1,$safeeval,'&y1');
700: $safehole->wrap(\&Math::Cephes::yn,$safeeval,'&yn');
701: $safehole->wrap(\&Math::Cephes::yv,$safeeval,'&yv');
1.215 albertel 702:
703: $safehole->wrap(\&Math::Cephes::bdtr ,$safeeval,'&bdtr' );
704: $safehole->wrap(\&Math::Cephes::bdtrc ,$safeeval,'&bdtrc' );
705: $safehole->wrap(\&Math::Cephes::bdtri ,$safeeval,'&bdtri' );
706: $safehole->wrap(\&Math::Cephes::btdtr ,$safeeval,'&btdtr' );
707: $safehole->wrap(\&Math::Cephes::chdtr ,$safeeval,'&chdtr' );
708: $safehole->wrap(\&Math::Cephes::chdtrc,$safeeval,'&chdtrc');
709: $safehole->wrap(\&Math::Cephes::chdtri,$safeeval,'&chdtri');
710: $safehole->wrap(\&Math::Cephes::fdtr ,$safeeval,'&fdtr' );
711: $safehole->wrap(\&Math::Cephes::fdtrc ,$safeeval,'&fdtrc' );
712: $safehole->wrap(\&Math::Cephes::fdtri ,$safeeval,'&fdtri' );
713: $safehole->wrap(\&Math::Cephes::gdtr ,$safeeval,'&gdtr' );
714: $safehole->wrap(\&Math::Cephes::gdtrc ,$safeeval,'&gdtrc' );
715: $safehole->wrap(\&Math::Cephes::nbdtr ,$safeeval,'&nbdtr' );
716: $safehole->wrap(\&Math::Cephes::nbdtrc,$safeeval,'&nbdtrc');
717: $safehole->wrap(\&Math::Cephes::nbdtri,$safeeval,'&nbdtri');
718: $safehole->wrap(\&Math::Cephes::ndtr ,$safeeval,'&ndtr' );
719: $safehole->wrap(\&Math::Cephes::ndtri ,$safeeval,'&ndtri' );
720: $safehole->wrap(\&Math::Cephes::pdtr ,$safeeval,'&pdtr' );
721: $safehole->wrap(\&Math::Cephes::pdtrc ,$safeeval,'&pdtrc' );
722: $safehole->wrap(\&Math::Cephes::pdtri ,$safeeval,'&pdtri' );
723: $safehole->wrap(\&Math::Cephes::stdtr ,$safeeval,'&stdtr' );
724: $safehole->wrap(\&Math::Cephes::stdtri,$safeeval,'&stdtri');
725:
726: # $safehole->wrap(\&Math::Cephes::new_fract,$safeeval,'&new_fract');
727: # $safehole->wrap(\&Math::Cephes::radd,$safeeval,'&radd');
728: # $safehole->wrap(\&Math::Cephes::rsub,$safeeval,'&rsub');
729: # $safehole->wrap(\&Math::Cephes::rmul,$safeeval,'&rmul');
730: # $safehole->wrap(\&Math::Cephes::rdiv,$safeeval,'&rdiv');
731: # $safehole->wrap(\&Math::Cephes::euclid,$safeeval,'&euclid');
732:
1.91 ng 733: $safehole->wrap(\&Math::Random::random_beta,$safeeval,'&math_random_beta');
734: $safehole->wrap(\&Math::Random::random_chi_square,$safeeval,'&math_random_chi_square');
735: $safehole->wrap(\&Math::Random::random_exponential,$safeeval,'&math_random_exponential');
736: $safehole->wrap(\&Math::Random::random_f,$safeeval,'&math_random_f');
737: $safehole->wrap(\&Math::Random::random_gamma,$safeeval,'&math_random_gamma');
738: $safehole->wrap(\&Math::Random::random_multivariate_normal,$safeeval,'&math_random_multivariate_normal');
739: $safehole->wrap(\&Math::Random::random_multinomial,$safeeval,'&math_random_multinomial');
740: $safehole->wrap(\&Math::Random::random_noncentral_chi_square,$safeeval,'&math_random_noncentral_chi_square');
741: $safehole->wrap(\&Math::Random::random_noncentral_f,$safeeval,'&math_random_noncentral_f');
742: $safehole->wrap(\&Math::Random::random_normal,$safeeval,'&math_random_normal');
743: $safehole->wrap(\&Math::Random::random_permutation,$safeeval,'&math_random_permutation');
1.93 ng 744: $safehole->wrap(\&Math::Random::random_permuted_index,$safeeval,'&math_random_permuted_index');
1.91 ng 745: $safehole->wrap(\&Math::Random::random_uniform,$safeeval,'&math_random_uniform');
746: $safehole->wrap(\&Math::Random::random_poisson,$safeeval,'&math_random_poisson');
747: $safehole->wrap(\&Math::Random::random_uniform_integer,$safeeval,'&math_random_uniform_integer');
748: $safehole->wrap(\&Math::Random::random_negative_binomial,$safeeval,'&math_random_negative_binomial');
749: $safehole->wrap(\&Math::Random::random_binomial,$safeeval,'&math_random_binomial');
750: $safehole->wrap(\&Math::Random::random_seed_from_phrase,$safeeval,'&random_seed_from_phrase');
751: $safehole->wrap(\&Math::Random::random_set_seed_from_phrase,$safeeval,'&random_set_seed_from_phrase');
752: $safehole->wrap(\&Math::Random::random_get_seed,$safeeval,'&random_get_seed');
753: $safehole->wrap(\&Math::Random::random_set_seed,$safeeval,'&random_set_seed');
1.305 albertel 754: $safehole->wrap(\&Apache::lonxml::error,$safeeval,'&LONCAPA_INTERNAL_ERROR');
1.311 albertel 755: $safehole->wrap(\&Apache::lonxml::debug,$safeeval,'&LONCAPA_INTERNAL_DEBUG');
1.322 albertel 756: $safehole->wrap(\&Apache::caparesponse::get_sigrange,$safeeval,'&LONCAPA_INTERNAL_get_sigrange');
1.91 ng 757:
1.82 ng 758: #need to inspect this class of ops
759: # $safeeval->deny(":base_orig");
1.331 albertel 760: $safeeval->permit("require");
1.91 ng 761: $safeinit .= ';$external::target="'.$target.'";';
1.121 albertel 762: my $rndseed;
1.123 albertel 763: my ($symb,$courseid,$domain,$name) = &Apache::lonxml::whichuser();
764: $rndseed=&Apache::lonnet::rndseed($symb,$courseid,$domain,$name);
1.319 albertel 765: $safeinit .= ';$external::randomseed="'.$rndseed.'";';
1.249 albertel 766: &Apache::lonxml::debug("Setting rndseed to $rndseed");
1.82 ng 767: &Apache::run::run($safeinit,$safeeval);
1.303 albertel 768:
1.207 albertel 769: }
770:
771: sub default_homework_load {
772: my ($safeeval)=@_;
773: &Apache::lonxml::debug('Loading default_homework');
774: my $default=&Apache::lonnet::getfile('/home/httpd/html/res/adm/includes/default_homework.lcpm');
1.241 albertel 775: if ($default eq -1) {
1.207 albertel 776: &Apache::lonxml::error("<b>Unable to find <i>default_homework.lcpm</i></b>");
777: } else {
778: &Apache::run::run($default,$safeeval);
779: $Apache::lonxml::default_homework_loaded=1;
780: }
1.17 albertel 781: }
782:
1.328 albertel 783: my $metamode_was;
1.55 albertel 784: sub startredirection {
1.328 albertel 785: if (!$Apache::lonxml::redirection) {
786: $metamode_was=$Apache::lonxml::metamode;
787: }
788: $Apache::lonxml::metamode=0;
789: $Apache::lonxml::redirection++;
790: push (@Apache::lonxml::outputstack, '');
1.55 albertel 791: }
792:
793: sub endredirection {
1.328 albertel 794: if (!$Apache::lonxml::redirection) {
795: &Apache::lonxml::error("Endredirection was called, before a startredirection, perhaps you have unbalanced tags. Some debuging information:".join ":",caller);
796: return '';
797: }
798: $Apache::lonxml::redirection--;
799: if (!$Apache::lonxml::redirection) {
800: $Apache::lonxml::metamode=$metamode_was;
801: }
802: pop @Apache::lonxml::outputstack;
1.97 albertel 803: }
804:
805: sub end_tag {
806: my ($tagstack,$parstack,$token)=@_;
807: pop(@$tagstack);
808: pop(@$parstack);
809: &decreasedepth($token);
1.55 albertel 810: }
811:
1.17 albertel 812: sub initdepth {
813: @Apache::lonxml::depthcounter=();
814: $Apache::lonxml::depth=-1;
815: $Apache::lonxml::olddepth=-1;
816: }
817:
1.339 albertel 818: my @timers;
819: my $lasttime;
1.17 albertel 820: sub increasedepth {
1.19 albertel 821: my ($token) = @_;
1.17 albertel 822: $Apache::lonxml::depth++;
823: $Apache::lonxml::depthcounter[$Apache::lonxml::depth]++;
824: if ($Apache::lonxml::depthcounter[$Apache::lonxml::depth]==1) {
825: $Apache::lonxml::olddepth=$Apache::lonxml::depth;
826: }
1.340 ! albertel 827: my $time;
! 828: if ($Apache::lonxml::debug eq "1") {
! 829: push(@timers,[&gettimeofday()]);
! 830: $time=&tv_interval($lasttime);
! 831: $lasttime=[&gettimeofday()];
! 832: }
1.339 albertel 833: my $spacing=' 'x($Apache::lonxml::depth-1);
1.42 albertel 834: my $curdepth=join('_',@Apache::lonxml::depthcounter);
1.339 albertel 835: &Apache::lonxml::debug("s$spacing$Apache::lonxml::depth : $Apache::lonxml::olddepth : $curdepth : $token->[1] : $time : \n");
1.54 albertel 836: #print "<br />s $Apache::lonxml::depth : $Apache::lonxml::olddepth : $curdepth : $token->[1]\n";
1.17 albertel 837: }
838:
839: sub decreasedepth {
1.19 albertel 840: my ($token) = @_;
1.17 albertel 841: $Apache::lonxml::depth--;
1.36 albertel 842: if ($Apache::lonxml::depth<$Apache::lonxml::olddepth-1) {
843: $#Apache::lonxml::depthcounter--;
844: $Apache::lonxml::olddepth=$Apache::lonxml::depth+1;
845: }
1.43 albertel 846: if ( $Apache::lonxml::depth < -1) {
1.280 www 847: &Apache::lonxml::warning(&mt("Missing tags, unable to properly run file."));
1.43 albertel 848: $Apache::lonxml::depth='-1';
849: }
1.340 ! albertel 850: my ($timer,$time);
! 851: if ($Apache::lonxml::debug eq "1") {
! 852: $timer=pop(@timers);
! 853: $time=&tv_interval($lasttime);
! 854: $lasttime=[&gettimeofday()];
! 855: }
1.339 albertel 856: my $spacing=' 'x$Apache::lonxml::depth;
1.42 albertel 857: my $curdepth=join('_',@Apache::lonxml::depthcounter);
1.339 albertel 858: &Apache::lonxml::debug("e$spacing$Apache::lonxml::depth : $Apache::lonxml::olddepth : $curdepth : $token->[1] : $time : ".&tv_interval($timer)."\n");
1.54 albertel 859: #print "<br />e $Apache::lonxml::depth : $Apache::lonxml::olddepth : $token->[1] : $curdepth\n";
1.1 sakharuk 860: }
1.19 albertel 861:
1.180 albertel 862: sub get_all_text_unbalanced {
1.190 albertel 863: #there is a copy of this in lonpublisher.pm
1.326 albertel 864: my($tag,$pars)= @_;
865: my $token;
866: my $result='';
867: $tag='<'.$tag.'>';
868: while ($token = $$pars[-1]->get_token) {
869: if (($token->[0] eq 'T')||($token->[0] eq 'C')||($token->[0] eq 'D')) {
870: $result.=$token->[1];
871: } elsif ($token->[0] eq 'PI') {
872: $result.=$token->[2];
873: } elsif ($token->[0] eq 'S') {
874: $result.=$token->[4];
875: } elsif ($token->[0] eq 'E') {
876: $result.=$token->[2];
877: }
878: if ($result =~ /\Q$tag\E/is) {
879: ($result,my $redo)=$result =~ /(.*)\Q$tag\E(.*)/is;
880: #&Apache::lonxml::debug('Got a winner with leftovers ::'.$2);
881: #&Apache::lonxml::debug('Result is :'.$1);
882: $redo=$tag.$redo;
883: &Apache::lonxml::newparser($pars,\$redo);
884: last;
885: }
886: }
887: return $result
1.204 albertel 888: }
889:
890: sub increment_counter {
1.247 albertel 891: my ($increment) = @_;
1.289 sakharuk 892: if (defined($increment) && $increment gt 0) {
893: $Apache::lonxml::counter+=$increment;
894: } else {
895: $Apache::lonxml::counter++;
1.247 albertel 896: }
1.289 sakharuk 897: $Apache::lonxml::counter_changed=1;
1.204 albertel 898: }
899:
900: sub init_counter {
901: if (defined($ENV{'form.counter'})) {
902: $Apache::lonxml::counter=$ENV{'form.counter'};
1.247 albertel 903: $Apache::lonxml::counter_changed=0;
1.237 sakharuk 904: } else {
1.204 albertel 905: $Apache::lonxml::counter=1;
1.247 albertel 906: $Apache::lonxml::counter_changed=1;
1.204 albertel 907: }
908: }
909:
910: sub store_counter {
911: &Apache::lonnet::appenv(('form.counter' => $Apache::lonxml::counter));
912: return '';
1.180 albertel 913: }
914:
1.19 albertel 915: sub get_all_text {
1.270 albertel 916: my($tag,$pars,$style)= @_;
917: my $gotfullstack=1;
918: if (ref($pars) ne 'ARRAY') {
919: $gotfullstack=0;
920: $pars=[$pars];
921: }
922: if (ref($style) ne 'HASH') {
923: $style={};
924: }
925: my $depth=0;
926: my $token;
927: my $result='';
928: if ( $tag =~ m:^/: ) {
929: my $tag=substr($tag,1);
930: #&Apache::lonxml::debug("have:$tag:");
931: my $top_empty=0;
932: while (($depth >=0) && ($#$pars > -1) && (!$top_empty)) {
933: while (($depth >=0) && ($token = $$pars[-1]->get_token)) {
934: #&Apache::lonxml::debug("e token:$token->[0]:$depth:$token->[1]:".$#$pars.":".$#Apache::lonxml::pwd);
935: if (($token->[0] eq 'T')||($token->[0] eq 'C')||($token->[0] eq 'D')) {
936: $result.=$token->[1];
937: } elsif ($token->[0] eq 'PI') {
938: $result.=$token->[2];
939: } elsif ($token->[0] eq 'S') {
1.316 albertel 940: if ($token->[1] =~ /^\Q$tag\E$/i) { $depth++; }
941: if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_ON$/) { $Apache::lonxml::usestyle=1; }
942: if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_OFF$/) { $Apache::lonxml::usestyle=0; }
1.270 albertel 943: $result.=$token->[4];
944: } elsif ($token->[0] eq 'E') {
1.316 albertel 945: if ( $token->[1] =~ /^\Q$tag\E$/i) { $depth--; }
1.270 albertel 946: #skip sending back the last end tag
1.283 albertel 947: if ($depth == 0 && exists($$style{'/'.$token->[1]}) && $Apache::lonxml::usestyle) {
1.270 albertel 948: my $string=
949: '<LONCAPA_INTERNAL_TURN_STYLE_OFF end="yes" />'.
950: $$style{'/'.$token->[1]}.
951: $token->[2].
952: '<LONCAPA_INTERNAL_TURN_STYLE_ON />';
953: &Apache::lonxml::newparser($pars,\$string);
954: #&Apache::lonxml::debug("reParsing $string");
955: next;
956: }
957: if ($depth > -1) {
958: $result.=$token->[2];
959: } else {
960: $$pars[-1]->unget_token($token);
961: }
962: }
963: }
964: if (($depth >=0) && ($#$pars == 0) ) { $top_empty=1; }
965: if (($depth >=0) && ($#$pars > 0) ) {
966: pop(@$pars);
967: pop(@Apache::lonxml::pwd);
968: }
969: }
970: if ($top_empty && $depth >= 0) {
971: #never found the end tag ran out of text, throw error send back blank
972: &error('Never found end tag for <'.$tag.
973: '> current string <pre>'.
1.314 albertel 974: &HTML::Entities::encode($result,'<>&"').
1.270 albertel 975: '</pre>');
976: if ($gotfullstack) {
977: my $newstring='</'.$tag.'>'.$result;
978: &Apache::lonxml::newparser($pars,\$newstring);
979: }
980: $result='';
981: }
982: } else {
983: while ($#$pars > -1) {
984: while ($token = $$pars[-1]->get_token) {
985: #&Apache::lonxml::debug("s token:$token->[0]:$depth:$token->[1]");
986: if (($token->[0] eq 'T')||($token->[0] eq 'C')||
987: ($token->[0] eq 'D')) {
988: $result.=$token->[1];
989: } elsif ($token->[0] eq 'PI') {
990: $result.=$token->[2];
991: } elsif ($token->[0] eq 'S') {
1.316 albertel 992: if ( $token->[1] =~ /^\Q$tag\E$/i) {
1.270 albertel 993: $$pars[-1]->unget_token($token); last;
994: } else {
995: $result.=$token->[4];
996: }
1.316 albertel 997: if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_ON$/) { $Apache::lonxml::usestyle=1; }
998: if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_OFF$/) { $Apache::lonxml::usestyle=0; }
1.270 albertel 999: } elsif ($token->[0] eq 'E') {
1000: $result.=$token->[2];
1001: }
1002: }
1003: if (($#$pars > 0) ) {
1004: pop(@$pars);
1005: pop(@Apache::lonxml::pwd);
1006: } else { last; }
1007: }
1008: }
1009: #&Apache::lonxml::debug("Exit:$result:");
1010: return $result
1.19 albertel 1011: }
1012:
1.23 albertel 1013: sub newparser {
1014: my ($parser,$contentref,$dir) = @_;
1.167 albertel 1015: push (@$parser,HTML::LCParser->new($contentref));
1.56 albertel 1016: $$parser['-1']->xml_mode('1');
1.23 albertel 1017: if ( $dir eq '' ) {
1018: push (@Apache::lonxml::pwd, $Apache::lonxml::pwd[$#Apache::lonxml::pwd]);
1019: } else {
1020: push (@Apache::lonxml::pwd, $dir);
1021: }
1022: }
1.1 sakharuk 1023:
1.8 albertel 1024: sub parstring {
1025: my ($token) = @_;
1026: my $temp='';
1.142 albertel 1027: foreach (@{$token->[3]}) {
1.35 www 1028: unless ($_=~/\W/) {
1.42 albertel 1029: my $val=$token->[2]->{$_};
1.231 albertel 1030: $val =~ s/([\%\@\\\"\'])/\\$1/g;
1.51 albertel 1031: #if ($val =~ m/^[\%\@]/) { $val="\\".$val; }
1.267 sakharuk 1032: $temp .= "my \$$_=\"$val\";";
1.20 albertel 1033: }
1.142 albertel 1034: }
1.8 albertel 1035: return $temp;
1036: }
1.22 albertel 1037:
1.34 www 1038: sub writeallows {
1.126 www 1039: unless ($#extlinks>=0) { return; }
1.34 www 1040: my $thisurl='/res/'.&Apache::lonnet::declutter(shift);
1.111 www 1041: if ($ENV{'httpref.'.$thisurl}) {
1042: $thisurl=$ENV{'httpref.'.$thisurl};
1043: }
1.34 www 1044: my $thisdir=$thisurl;
1045: $thisdir=~s/\/[^\/]+$//;
1046: my %httpref=();
1.142 albertel 1047: foreach (@extlinks) {
1.34 www 1048: $httpref{'httpref.'.
1.125 www 1049: &Apache::lonnet::hreflocation($thisdir,$_)}=$thisurl;
1.142 albertel 1050: }
1.126 www 1051: @extlinks=();
1.34 www 1052: &Apache::lonnet::appenv(%httpref);
1053: }
1054:
1.281 albertel 1055: sub register_ssi {
1056: my ($url,%form)=@_;
1057: push (@Apache::lonxml::ssi_info,{'url'=>$url,'form'=>\%form});
1058: return '';
1059: }
1060:
1061: sub do_registered_ssi {
1062: foreach my $info (@Apache::lonxml::ssi_info) {
1063: my %form=%{ $info->{'form'}};
1064: my $url=$info->{'url'};
1065: &Apache::lonnet::ssi($url,%form);
1066: }
1067: }
1.66 www 1068: #
1069: # Afterburner handles anchors, highlights and links
1070: #
1071: sub afterburn {
1072: my $result=shift;
1.154 albertel 1073: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
1074: ['highlight','anchor','link']);
1.66 www 1075: if ($ENV{'form.highlight'}) {
1.142 albertel 1076: foreach (split(/\,/,$ENV{'form.highlight'})) {
1.66 www 1077: my $anchorname=$_;
1078: my $matchthis=$anchorname;
1079: $matchthis=~s/\_+/\\s\+/g;
1.317 albertel 1080: $result=~s/(\Q$matchthis\E)/\<font color=\"red\"\>$1\<\/font\>/gs;
1.142 albertel 1081: }
1.66 www 1082: }
1083: if ($ENV{'form.link'}) {
1.142 albertel 1084: foreach (split(/\,/,$ENV{'form.link'})) {
1.66 www 1085: my ($anchorname,$linkurl)=split(/\>/,$_);
1086: my $matchthis=$anchorname;
1087: $matchthis=~s/\_+/\\s\+/g;
1.317 albertel 1088: $result=~s/(\Q$matchthis\E)/\<a href=\"$linkurl\"\>$1\<\/a\>/gs;
1.142 albertel 1089: }
1.66 www 1090: }
1091: if ($ENV{'form.anchor'}) {
1092: my $anchorname=$ENV{'form.anchor'};
1093: my $matchthis=$anchorname;
1094: $matchthis=~s/\_+/\\s\+/g;
1.317 albertel 1095: $result=~s/(\Q$matchthis\E)/\<a name=\"$anchorname\"\>$1\<\/a\>/s;
1.66 www 1096: $result.=(<<"ENDSCRIPT");
1.226 albertel 1097: <script type="text/javascript">
1.66 www 1098: document.location.hash='$anchorname';
1099: </script>
1100: ENDSCRIPT
1101: }
1102: return $result;
1103: }
1104:
1.79 www 1105: sub storefile {
1106: my ($file,$contents)=@_;
1.290 albertel 1107: &Apache::lonnet::correct_line_ends(\$contents);
1.79 www 1108: if (my $fh=Apache::File->new('>'.$file)) {
1109: print $fh $contents;
1110: $fh->close();
1.271 www 1111: return 1;
1.147 albertel 1112: } else {
1.271 www 1113: &warning("Unable to save file $file");
1114: return 0;
1.79 www 1115: }
1116: }
1117:
1.151 albertel 1118: sub createnewhtml {
1.321 www 1119: my $title=&mt('Title of document goes here');
1120: my $body=&mt('Body of document goes here');
1121: my $filecontents=(<<SIMPLECONTENT);
1122: <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml/11/DTD/xhtml11.dtd">
1.78 www 1123: <html>
1124: <head>
1.321 www 1125: <title>$title</title>
1.78 www 1126: </head>
1127: <body bgcolor="#FFFFFF">
1.321 www 1128: $body
1.78 www 1129: </body>
1130: </html>
1131: SIMPLECONTENT
1.321 www 1132: return $filecontents;
1.151 albertel 1133: }
1134:
1.274 albertel 1135: sub createnewsty {
1136: my $filecontents=(<<SIMPLECONTENT);
1137: <definetag name="">
1138: <render>
1139: <web></web>
1140: <tex></tex>
1141: </render>
1142: </definetag>
1143: SIMPLECONTENT
1144: return $filecontents;
1145: }
1146:
1.147 albertel 1147:
1.151 albertel 1148: sub inserteditinfo {
1.274 albertel 1149: my ($result,$filecontents,$filetype)=@_;
1.314 albertel 1150: $filecontents = &HTML::Entities::encode($filecontents,'<>&"');
1.147 albertel 1151: # my $editheader='<a href="#editsection">Edit below</a><hr />';
1.274 albertel 1152: my $xml_help = '';
1.321 www 1153: my $initialize='';
1.274 albertel 1154: if ($filetype eq 'html') {
1.323 www 1155: my $addbuttons=&Apache::lonhtmlcommon::htmlareaaddbuttons();
1.333 www 1156: $initialize=&Apache::lonhtmlcommon::htmlareaheaders().
1157: &Apache::lonhtmlcommon::spellheader().(<<FULLPAGE);
1.321 www 1158: <script type="text/javascript">
1.323 www 1159: $addbuttons
1160:
1.321 www 1161: HTMLArea.loadPlugin("FullPage");
1162:
1163: function initDocument() {
1.323 www 1164: var editor=new HTMLArea("filecont",config);
1.321 www 1165: editor.registerPlugin(FullPage);
1166: editor.generate();
1167: }
1168: </script>
1169: FULLPAGE
1170: $result=~s/\<body([^\>]*)\>/\<body onload="initDocument()" $1\>/i;
1171: $xml_help=&Apache::loncommon::helpLatexCheatsheet();
1.274 albertel 1172: }
1173: my $cleanbut = '';
1174: if ($filetype eq 'html') {
1.280 www 1175: $cleanbut='<input type="submit" name="attemptclean" value="'.
1176: &mt('Save and then attempt to clean HTML').'" />';
1.274 albertel 1177: }
1.254 albertel 1178: my $titledisplay=&display_title();
1.280 www 1179: my %lt=&Apache::lonlocal::texthash('st' => 'Save this',
1180: 'vi' => 'View',
1181: 'ed' => 'Edit');
1.161 albertel 1182: my $buttons=(<<BUTTONS);
1.274 albertel 1183: $cleanbut
1.304 matthew 1184: <input type="submit" name="savethisfile" accesskey="s" value="$lt{'st'}" />
1185: <input type="submit" name="viewmode" accesskey="v" value="$lt{'vi'}" />
1.161 albertel 1186: BUTTONS
1.333 www 1187: $buttons.=&Apache::lonhtmlcommon::spelllink('xmledit','filecont');
1.338 albertel 1188: $buttons.=&Apache::lonhtmlcommon::htmlareaselectactive('filecont');
1.78 www 1189: my $editfooter=(<<ENDFOOTER);
1.321 www 1190: $initialize
1.78 www 1191: <hr />
1192: <a name="editsection" />
1.333 www 1193: <form method="post" name="xmledit">
1.240 albertel 1194: $xml_help
1.280 www 1195: <input type="hidden" name="editmode" value="$lt{'ed'}" />
1.170 www 1196: $buttons<br />
1.321 www 1197: <textarea cols="80" rows="44" name="filecont" id="filecont">$filecontents</textarea>
1.170 www 1198: <br />$buttons
1.78 www 1199: <br />
1200: </form>
1.254 albertel 1201: $titledisplay
1.321 www 1202: </body>
1.78 www 1203: ENDFOOTER
1.147 albertel 1204: # $result=~s/(\<body[^\>]*\>)/$1$editheader/is;
1.78 www 1205: $result=~s/(\<\/body\>)/$editfooter/is;
1206: return $result;
1207: }
1208:
1.152 albertel 1209: sub get_target {
1210: my $viewgrades=&Apache::lonnet::allowed('vgr',$ENV{'request.course.id'});
1211: if ( $ENV{'request.state'} eq 'published') {
1212: if ( defined($ENV{'form.grade_target'})
1213: && ($viewgrades == 'F' )) {
1214: return ($ENV{'form.grade_target'});
1.153 albertel 1215: } elsif (defined($ENV{'form.grade_target'})) {
1216: if (($ENV{'form.grade_target'} eq 'web') ||
1217: ($ENV{'form.grade_target'} eq 'tex') ) {
1218: return $ENV{'form.grade_target'}
1219: } else {
1220: return 'web';
1221: }
1.152 albertel 1222: } else {
1223: return 'web';
1224: }
1225: } elsif ($ENV{'request.state'} eq 'construct') {
1226: if ( defined($ENV{'form.grade_target'})) {
1227: return ($ENV{'form.grade_target'});
1228: } else {
1229: return 'web';
1230: }
1231: } else {
1232: return 'web';
1233: }
1234: }
1235:
1.24 sakharuk 1236: sub handler {
1.255 sakharuk 1237: my $request=shift;
1238:
1239: my $target=&get_target();
1240:
1.258 albertel 1241: $Apache::lonxml::debug=$ENV{'user.debug'};
1.255 sakharuk 1242:
1243: if ($ENV{'browser.mathml'}) {
1.280 www 1244: &Apache::loncommon::content_type($request,'text/xml');
1.255 sakharuk 1245: } else {
1.280 www 1246: &Apache::loncommon::content_type($request,'text/html');
1.255 sakharuk 1247: }
1248: &Apache::loncommon::no_cache($request);
1249: $request->send_http_header;
1250:
1251: return OK if $request->header_only;
1.68 www 1252:
1253:
1.255 sakharuk 1254: my $file=&Apache::lonnet::filelocation("",$request->uri);
1.274 albertel 1255: my $filetype;
1256: if ($file =~ /\.sty$/) {
1257: $filetype='sty';
1258: } else {
1259: $filetype='html';
1260: }
1.78 www 1261: #
1262: # Edit action? Save file.
1263: #
1.255 sakharuk 1264: unless ($ENV{'request.state'} eq 'published') {
1265: if (($ENV{'form.savethisfile'}) || ($ENV{'form.attemptclean'})) {
1.271 www 1266: if (&storefile($file,$ENV{'form.filecont'})) {
1.309 albertel 1267: &Apache::lonxml::info("<font COLOR=\"#0000FF\">".
1268: &mt('Updated').": ".
1269: &Apache::lonlocal::locallocaltime(time).
1270: " </font>");
1.271 www 1271: }
1.255 sakharuk 1272: }
1273: }
1274: my %mystyle;
1275: my $result = '';
1276: my $filecontents=&Apache::lonnet::getfile($file);
1277: if ($filecontents eq -1) {
1.284 www 1278: my $bodytag=&Apache::loncommon::bodytag('File Error');
1279: my $fnf=&mt('File not found');
1.255 sakharuk 1280: $result=(<<ENDNOTFOUND);
1.78 www 1281: <html>
1282: <head>
1.284 www 1283: <title>$fnf</title>
1.78 www 1284: </head>
1.284 www 1285: $bodytag
1286: <b>$fnf: $file</b>
1.78 www 1287: </body>
1288: </html>
1289: ENDNOTFOUND
1.50 albertel 1290: $filecontents='';
1.255 sakharuk 1291: if ($ENV{'request.state'} ne 'published') {
1.274 albertel 1292: if ($filetype eq 'sty') {
1293: $filecontents=&createnewsty();
1294: } else {
1295: $filecontents=&createnewhtml();
1296: }
1.255 sakharuk 1297: $ENV{'form.editmode'}='Edit'; #force edit mode
1298: }
1299: } else {
1300: unless ($ENV{'request.state'} eq 'published') {
1301: if ($ENV{'form.attemptclean'}) {
1302: $filecontents=&htmlclean($filecontents,1);
1303: }
1.264 www 1304: #
1305: # we are in construction space, see if edit mode forced
1306: &Apache::loncommon::get_unprocessed_cgi
1307: ($ENV{'QUERY_STRING'},['editmode']);
1.255 sakharuk 1308: }
1309: if (!$ENV{'form.editmode'} || $ENV{'form.viewmode'}) {
1310: $result = &Apache::lonxml::xmlparse($request,$target,$filecontents,
1311: '',%mystyle);
1312: }
1.147 albertel 1313: }
1.255 sakharuk 1314:
1.78 www 1315: #
1316: # Edit action? Insert editing commands
1317: #
1.255 sakharuk 1318: unless ($ENV{'request.state'} eq 'published') {
1319: if ($ENV{'form.editmode'} && (!($ENV{'form.viewmode'}))) {
1320: my $displayfile=$request->uri;
1321: $displayfile=~s/^\/[^\/]*//;
1.309 albertel 1322: $result='<html><body bgcolor="#FFFFFF">'.
1323: &Apache::lonxml::message_location().'<h3>'.
1324: $displayfile.
1.255 sakharuk 1325: '</h3></body></html>';
1.274 albertel 1326: $result=&inserteditinfo($result,$filecontents,$filetype);
1.255 sakharuk 1327: }
1.147 albertel 1328: }
1.274 albertel 1329: if ($filetype eq 'html') { writeallows($request->uri); }
1330:
1.255 sakharuk 1331:
1.309 albertel 1332: &Apache::lonxml::add_messages(\$result);
1.255 sakharuk 1333: $request->print($result);
1334:
1335: return OK;
1.253 albertel 1336: }
1337:
1338: sub display_title {
1339: my $result;
1340: if ($ENV{'request.state'} eq 'construct') {
1341: my $title=&Apache::lonnet::gettitle();
1342: if (!defined($title) || $title eq '') {
1343: $title = $ENV{'request.filename'};
1344: $title = substr($title, rindex($title, '/') + 1);
1345: }
1346: $result = "<script type='text/javascript'>top.document.title = '$title - LON-CAPA Construction Space';</script>";
1347: }
1348: return $result;
1.24 sakharuk 1349: }
1.147 albertel 1350:
1.22 albertel 1351: sub debug {
1.298 albertel 1352: if ($Apache::lonxml::debug eq "1") {
1353: $|=1;
1.300 albertel 1354: my $request=$Apache::lonxml::request;
1355: if (!$request) { $request=Apache->request; }
1.314 albertel 1356: $request->print('<font size="-2"><pre>DEBUG:'.&HTML::Entities::encode($_[0],'<>&"')."</pre></font>\n");
1.327 sakharuk 1357: # &Apache::lonnet::logthis($_[0]);
1.298 albertel 1358: }
1.22 albertel 1359: }
1.49 albertel 1360:
1.22 albertel 1361: sub error {
1.336 albertel 1362: $errorcount++;
1363: if (($Apache::lonxml::debug eq 1) || ($ENV{'request.state'} eq 'construct') ) {
1364: # If printing in construction space, put the error inside <pre></pre>
1365: push(@Apache::lonxml::error_messages,
1366: $Apache::lonxml::warnings_error_header.
1367: "<b>ERROR:</b>".join("<br />\n",@_)."<br />\n");
1368: $Apache::lonxml::warnings_error_header='';
1369: } else {
1370: my $errormsg;
1371: my ($symb)=&Apache::lonnet::symbread();
1372: if ( !$symb ) {
1373: #public or browsers
1374: $errormsg=&mt("An error occured while processing this resource. The author has been notified.");
1375: }
1376: #notify author
1377: &Apache::lonmsg::author_res_msg($ENV{'request.filename'},join('<br />',@_));
1378: #notify course
1379: if ( $symb && $ENV{'request.course.id'} ) {
1380: my (undef,%users)=&Apache::lonfeedback::decide_receiver(undef,0,1,1,1);
1381: my $declutter=&Apache::lonnet::declutter($ENV{'request.filename'});
1382: my @userlist;
1383: foreach (keys %users) {
1384: my ($user,$domain) = split(/:/, $_);
1385: push(@userlist,"$user\@$domain");
1386: &Apache::lonmsg::user_normal_msg($user,$domain,
1387: "Error [$declutter]",join('<br />',@_));
1388: }
1389: if ($ENV{'request.role.adv'}) {
1390: $errormsg=&mt("An error occured while processing this resource. The course personnel ([_1]) and the author have been notified.",join(', ',@userlist));
1391: } else {
1392: $errormsg=&mt("An error occured while processing this resource. The instructor has been notified.");
1393: }
1394: }
1395: push(@Apache::lonxml::error_messages,"<b>$errormsg</b> <br />");
1.52 albertel 1396: }
1.22 albertel 1397: }
1.49 albertel 1398:
1.22 albertel 1399: sub warning {
1.295 albertel 1400: $warningcount++;
1.261 albertel 1401:
1.295 albertel 1402: if ($ENV{'form.grade_target'} ne 'tex') {
1403: if ($ENV{'request.state'} eq 'construct' || $Apache::lonxml::debug) {
1.300 albertel 1404: my $request=$Apache::lonxml::request;
1405: if (!$request) { $request=Apache->request; }
1.309 albertel 1406: push(@Apache::lonxml::warning_messages,
1407: $Apache::lonxml::warnings_error_header.
1408: "<b>W</b>ARNING<b>:</b>".join('<br />',@_)."<br />\n");
1.295 albertel 1409: $Apache::lonxml::warnings_error_header='';
1410: }
1411: }
1.309 albertel 1412: }
1413:
1414: sub info {
1415: if ($ENV{'form.grade_target'} ne 'tex'
1416: && $ENV{'request.state'} eq 'construct') {
1417: push(@Apache::lonxml::info_messages,join('<br />',@_)."<br />\n");
1418: }
1419: }
1420:
1421: sub message_location {
1422: return '__LONCAPA_INTERNAL_MESSAGE_LOCATION__';
1423: }
1424:
1425: sub add_messages {
1426: my ($msg)=@_;
1427: my $result=join(' ',
1428: @Apache::lonxml::info_messages,
1429: @Apache::lonxml::error_messages,
1430: @Apache::lonxml::warning_messages);
1431: undef(@Apache::lonxml::info_messages);
1432: undef(@Apache::lonxml::error_messages);
1433: undef(@Apache::lonxml::warning_messages);
1434: $$msg=~s/__LONCAPA_INTERNAL_MESSAGE_LOCATION__/$result/;
1435: $$msg=~s/__LONCAPA_INTERNAL_MESSAGE_LOCATION__//g;
1.83 albertel 1436: }
1437:
1438: sub get_param {
1.213 albertel 1439: my ($param,$parstack,$safeeval,$context,$case_insensitive) = @_;
1440: if ( ! $context ) { $context = -1; }
1441: my $args ='';
1442: if ( $#$parstack > (-2-$context) ) { $args=$$parstack[$context]; }
1.297 sakharuk 1443: if ( ! $Apache::lonxml::usestyle ) {
1444: $args=$Apache::lonxml::style_values.$args;
1445: }
1.213 albertel 1446: if ( ! $args ) { return undef; }
1447: if ( $case_insensitive ) {
1448: if ($args =~ s/(my \$)(\Q$param\E)(=\")/$1.lc($2).$3/ei) {
1449: return &Apache::run::run("{$args;".'return $'.$param.'}',
1450: $safeeval); #'
1451: } else {
1452: return undef;
1453: }
1454: } else {
1455: if ( $args =~ /my \$\Q$param\E=\"/ ) {
1456: return &Apache::run::run("{$args;".'return $'.$param.'}',
1457: $safeeval); #'
1458: } else {
1459: return undef;
1460: }
1461: }
1.22 albertel 1462: }
1463:
1.132 albertel 1464: sub get_param_var {
1.213 albertel 1465: my ($param,$parstack,$safeeval,$context,$case_insensitive) = @_;
1.132 albertel 1466: if ( ! $context ) { $context = -1; }
1467: my $args ='';
1468: if ( $#$parstack > (-2-$context) ) { $args=$$parstack[$context]; }
1.297 sakharuk 1469: if ( ! $Apache::lonxml::usestyle ) {
1470: $args=$Apache::lonxml::style_values.$args;
1471: }
1.230 albertel 1472: &Apache::lonxml::debug("Args are $args param is $param");
1.213 albertel 1473: if ($case_insensitive) {
1474: if (! ($args=~s/(my \$)(\Q$param\E)(=\")/$1.lc($2).$3/ei)) {
1475: return undef;
1476: }
1477: } elsif ( $args !~ /my \$\Q$param\E=\"/ ) { return undef; }
1.132 albertel 1478: my $value=&Apache::run::run("{$args;".'return $'.$param.'}',$safeeval); #'
1.230 albertel 1479: &Apache::lonxml::debug("first run is $value");
1480: if ($value =~ /^[\$\@\%]\w+$/) {
1481: &Apache::lonxml::debug("doing second");
1482: my @result=&Apache::run::run("return $value",$safeeval,1);
1483: if (!defined($result[0])) {
1484: return $value
1485: } else {
1486: if (wantarray) { return @result; } else { return $result[0]; }
1487: }
1.132 albertel 1488: } else {
1489: return $value;
1490: }
1491: }
1492:
1.74 albertel 1493: sub register_insert {
1.75 albertel 1494: my @data = split /\n/, &Apache::lonnet::getfile('/home/httpd/lonTabs/insertlist.tab');
1.74 albertel 1495: my $i;
1.76 albertel 1496: my $tagnum=0;
1.74 albertel 1497: my @order;
1498: for ($i=0;$i < $#data; $i++) {
1499: my $line = $data[$i];
1500: if ( $line =~ /^\#/ || $line =~ /^\s*\n/) { next; }
1501: if ( $line =~ /TABLE/ ) { last; }
1.268 bowersj2 1502: my ($tag,$descrip,$color,$function,$show,$helpfile,$helpdesc) = split(/,/, $line);
1.135 albertel 1503: if ($tag) {
1504: $insertlist{"$tagnum.tag"} = $tag;
1505: $insertlist{"$tagnum.description"} = $descrip;
1506: $insertlist{"$tagnum.color"} = $color;
1507: $insertlist{"$tagnum.function"} = $function;
1508: if (!defined($show)) { $show='yes'; }
1509: $insertlist{"$tagnum.show"}= $show;
1.268 bowersj2 1510: $insertlist{"$tagnum.helpfile"} = $helpfile;
1511: $insertlist{"$tagnum.helpdesc"} = $helpdesc;
1.135 albertel 1512: $insertlist{"$tag.num"}=$tagnum;
1513: $tagnum++;
1514: }
1.74 albertel 1515: }
1.76 albertel 1516: $i++; #skipping TABLE line
1517: $tagnum = 0;
1.74 albertel 1518: for (;$i < $#data;$i++) {
1519: my $line = $data[$i];
1.76 albertel 1520: my ($mnemonic,@which) = split(/ +/,$line);
1521: my $tag = $insertlist{"$tagnum.tag"};
1.144 matthew 1522: for (my $j=0;$j <=$#which;$j++) {
1.74 albertel 1523: if ( $which[$j] eq 'Y' ) {
1.76 albertel 1524: if ($insertlist{"$j.show"} ne 'no') {
1525: push(@{ $insertlist{"$tag.which"} },$j);
1526: }
1.74 albertel 1527: }
1528: }
1.76 albertel 1529: $tagnum++;
1.74 albertel 1530: }
1531: }
1.98 albertel 1532:
1533: sub description {
1534: my ($token)=@_;
1.138 albertel 1535: my $tagnum;
1536: my $tag=$token->[1];
1537: foreach my $namespace (reverse @Apache::lonxml::namespace) {
1538: my $testtag=$namespace.'::'.$tag;
1539: $tagnum=$insertlist{"$testtag.num"};
1540: if (defined($tagnum)) { last; }
1541: }
1542: if (!defined ($tagnum)) { $tagnum=$Apache::lonxml::insertlist{"$tag.num"}; }
1543: return $insertlist{$tagnum.'.description'};
1.268 bowersj2 1544: }
1545:
1546: # Returns a list containing the help file, and the description
1547: sub helpinfo {
1548: my ($token)=@_;
1549: my $tagnum;
1550: my $tag=$token->[1];
1551: foreach my $namespace (reverse @Apache::lonxml::namespace) {
1552: my $testtag=$namespace.'::'.$tag;
1553: $tagnum=$insertlist{"$testtag.num"};
1554: if (defined($tagnum)) { last; }
1555: }
1556: if (!defined ($tagnum)) { $tagnum=$Apache::lonxml::insertlist{"$tag.num"}; }
1557: return ($insertlist{$tagnum.'.helpfile'}, $insertlist{$tagnum.'.helpdesc'});
1.98 albertel 1558: }
1.123 albertel 1559:
1560: # ----------------------------------------------------------------- whichuser
1561: # returns a list of $symb, $courseid, $domain, $name that is correct for
1562: # calls to lonnet functions for this setup.
1563: # - looks for form.grade_ parameters
1564: sub whichuser {
1.262 matthew 1565: my ($passedsymb)=@_;
1.245 albertel 1566: my ($symb,$courseid,$domain,$name,$publicuser);
1.123 albertel 1567: if (defined($ENV{'form.grade_symb'})) {
1568: my $tmp_courseid=$ENV{'form.grade_courseid'};
1.269 albertel 1569: my $allowed=&Apache::lonnet::allowed('vgr',$tmp_courseid);
1.123 albertel 1570: if ($allowed) {
1571: $symb=$ENV{'form.grade_symb'};
1572: $courseid=$ENV{'form.grade_courseid'};
1573: $domain=$ENV{'form.grade_domain'};
1574: $name=$ENV{'form.grade_username'};
1575: }
1.134 albertel 1576: } else {
1.262 matthew 1577: if (!$passedsymb) {
1578: $symb=&Apache::lonnet::symbread();
1579: } else {
1580: $symb=$passedsymb;
1581: }
1.244 albertel 1582: $courseid=$ENV{'request.course.id'};
1583: $domain=$ENV{'user.domain'};
1584: $name=$ENV{'user.name'};
1585: if ($name eq 'public' && $domain eq 'public') {
1586: if (!defined($ENV{'form.username'})) {
1587: $ENV{'form.username'}.=time.rand(10000000);
1588: }
1589: $name.=$ENV{'form.username'};
1590: }
1.123 albertel 1591: }
1.245 albertel 1592: return ($symb,$courseid,$domain,$name,$publicuser);
1.123 albertel 1593: }
1594:
1.1 sakharuk 1595: 1;
1596: __END__
1.68 www 1597:
1598:
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