Annotation of loncom/xml/lonxml.pm, revision 1.389
1.2 sakharuk 1: # The LearningOnline Network with CAPA
1.3 sakharuk 2: # XML Parser Module
1.2 sakharuk 3: #
1.389 ! albertel 4: # $Id: lonxml.pm,v 1.388 2005/11/10 21:38:27 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();
1.372 albertel 84: use Apache::lonnet;
1.161 albertel 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: $Apache::lonxml::warnings_error_header='';
150:
1.68 www 151: sub xmlbegin {
1.356 albertel 152: my ($style)=@_;
153: my $output='';
154: @htmlareafields=();
1.372 albertel 155: if ($env{'browser.mathml'}) {
1.356 albertel 156: $output='<?xml version="1.0"?>'
1.357 albertel 157: #.'<?xml-stylesheet type="text/css" href="/adm/MathML/mathml.css"?>'."\n"
158: # .'<!DOCTYPE html SYSTEM "/adm/MathML/mathml.dtd" '
159:
160: # .'<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd" [<!ENTITY mathns "http://www.w3.org/1998/Math/MathML">] >'
161: .'<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1 plus MathML 2.0 plus SVG 1.1//EN" "http://www.w3.org/2002/04/xhtml-math-svg/xhtml-math-svg.dtd">'
1.68 www 162: .'<html xmlns:math="http://www.w3.org/1998/Math/MathML" '
1.357 albertel 163: .'xmlns="http://www.w3.org/1999/xhtml">';
1.356 albertel 164: } else {
165: $output='<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html>';
166: }
167: if ($style eq 'encode') {
168: $output=&HTML::Entities::encode($output,'<>&"');
169: }
170: return $output;
1.68 www 171: }
172:
173: sub xmlend {
1.335 sakharuk 174: my ($target,$parser)=@_;
1.278 www 175: my $mode='xml';
176: my $status='OPEN';
1.368 albertel 177: if ($Apache::lonhomework::parsing_a_problem ||
178: $Apache::lonhomework::parsing_a_task ) {
1.278 www 179: $mode='problem';
180: $status=$Apache::inputtags::status[-1];
181: }
1.362 matthew 182: my $discussion;
1.379 albertel 183: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
184: ['LONCAPA_INTERNAL_no_discussion']);
1.372 albertel 185: if (! exists($env{'form.LONCAPA_INTERNAL_no_discussion'}) ||
186: $env{'form.LONCAPA_INTERNAL_no_discussion'} ne 'true') {
1.362 matthew 187: $discussion=&Apache::lonfeedback::list_discussion($mode,$status);
188: }
1.334 sakharuk 189: if ($target eq 'tex') {
1.335 sakharuk 190: $discussion.='<tex>\keephidden{ENDOFPROBLEM}\vskip 0.5mm\noindent\makebox[\textwidth/$number_of_columns][b]{\hrulefill}\end{document}</tex>';
1.334 sakharuk 191: &Apache::lonxml::newparser($parser,\$discussion,'');
192: return '';
193: } else {
1.360 albertel 194: return $discussion.&Apache::loncommon::endbodytag();
1.334 sakharuk 195: }
1.119 www 196: }
197:
198: sub tokeninputfield {
1.120 www 199: my $defhost=$Apache::lonnet::perlvar{'lonHostID'};
200: $defhost=~tr/a-z/A-Z/;
1.119 www 201: return (<<ENDINPUTFIELD)
1.226 albertel 202: <script type="text/javascript">
1.120 www 203: function updatetoken() {
204: var comp=new Array;
205: var barcode=unescape(document.tokeninput.barcode.value);
206: comp=barcode.split('*');
207: if (typeof(comp[0])!="undefined") {
208: document.tokeninput.codeone.value=comp[0];
209: }
210: if (typeof(comp[1])!="undefined") {
211: document.tokeninput.codetwo.value=comp[1];
212: }
213: if (typeof(comp[2])!="undefined") {
214: comp[2]=comp[2].toUpperCase();
215: document.tokeninput.codethree.value=comp[2];
216: }
217: document.tokeninput.barcode.value='';
218: }
219: </script>
220: <form method="post" name="tokeninput">
1.119 www 221: <table border="2" bgcolor="#FFFFBB">
222: <tr><th>DocID Checkin</th></tr>
223: <tr><td>
224: <table>
225: <tr>
226: <td>Scan in Barcode</td>
1.120 www 227: <td><input type="text" size="22" name="barcode"
228: onChange="updatetoken()"/></td>
1.119 www 229: </tr>
230: <tr><td><i>or</i> Type in DocID</td>
231: <td>
232: <input type="text" size="5" name="codeone" />
1.120 www 233: <b><font size="+2">*</font></b>
1.119 www 234: <input type="text" size="5" name="codetwo" />
1.120 www 235: <b><font size="+2">*</font></b>
236: <input type="text" size="10" name="codethree" value="$defhost"
237: onChange="this.value=this.value.toUpperCase()" />
1.119 www 238: </td></tr>
239: </table>
240: </td></tr>
241: <tr><td><input type="submit" value="Check in DocID" /></td></tr>
242: </table>
243: </form>
244: ENDINPUTFIELD
1.112 www 245: }
246:
1.116 www 247: sub maketoken {
1.118 www 248: my ($symb,$tuname,$tudom,$tcrsid)=@_;
1.112 www 249: unless ($symb) {
250: $symb=&Apache::lonnet::symbread();
251: }
252: unless ($tuname) {
1.372 albertel 253: $tuname=$env{'user.name'};
254: $tudom=$env{'user.domain'};
255: $tcrsid=$env{'request.course.id'};
1.112 www 256: }
1.116 www 257:
1.118 www 258: return &Apache::lonnet::checkout($symb,$tuname,$tudom,$tcrsid);
259: }
260:
261: sub printtokenheader {
1.133 albertel 262: my ($target,$token,$tsymb,$tcrsid,$tudom,$tuname)=@_;
1.116 www 263: unless ($token) { return ''; }
1.118 www 264:
1.133 albertel 265: my ($symb,$courseid,$domain,$name) = &Apache::lonxml::whichuser();
266: unless ($tsymb) {
267: $tsymb=$symb;
1.118 www 268: }
269: unless ($tuname) {
1.133 albertel 270: $tuname=$name;
271: $tudom=$domain;
272: $tcrsid=$courseid;
1.118 www 273: }
1.114 www 274:
275: my %reply=&Apache::lonnet::get('environment',
276: ['firstname','middlename','lastname','generation'],
277: $tudom,$tuname);
278: my $plainname=$reply{'firstname'}.' '.
279: $reply{'middlename'}.' '.
280: $reply{'lastname'}.' '.
281: $reply{'generation'};
282:
1.112 www 283: if ($target eq 'web') {
1.145 www 284: my %idhash=&Apache::lonnet::idrget($tudom,($tuname));
1.115 www 285: return
1.221 albertel 286: '<img align="right" src="/cgi-bin/barcode.png?encode='.$token.'" />'.
1.284 www 287: &mt('Checked out for').' '.$plainname.
288: '<br />'.&mt('User').': '.$tuname.' at '.$tudom.
289: '<br />'.&mt('ID').': '.$idhash{$tuname}.
290: '<br />'.&mt('CourseID').': '.$tcrsid.
1.372 albertel 291: '<br />'.&mt('Course').': '.$env{'course.'.$tcrsid.'.description'}.
1.284 www 292: '<br />'.&mt('DocID').': '.$token.
293: '<br />'.&mt('Time').': '.&Apache::lonlocal::locallocaltime().'<hr />';
1.112 www 294: } else {
1.121 albertel 295: return $token;
1.112 www 296: }
1.68 www 297: }
298:
1.356 albertel 299: sub fontsettings {
1.70 www 300: my $headerstring='';
1.372 albertel 301: if (($env{'browser.os'} eq 'mac') && (!$env{'browser.mathml'})) {
1.248 albertel 302: $headerstring.=
1.343 albertel 303: '<meta Content-Type="text/html; charset=x-mac-roman" />';
1.372 albertel 304: } elsif (!$env{'browser.mathml'} && $env{'browser.unicode'}) {
1.248 albertel 305: $headerstring.=
306: '<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />';
1.70 www 307: }
308: return $headerstring;
1.68 www 309: }
310:
1.48 albertel 311: sub printalltags {
312: my $temp;
313: foreach $temp (sort keys %Apache::lonxml::alltags) {
1.141 albertel 314: &Apache::lonxml::debug("$temp -- ".
315: join(',',@{ $Apache::lonxml::alltags{$temp} }));
1.48 albertel 316: }
317: }
1.31 sakharuk 318:
1.3 sakharuk 319: sub xmlparse {
1.172 albertel 320: my ($request,$target,$content_file_string,$safeinit,%style_for_target) = @_;
1.96 albertel 321:
1.172 albertel 322: &setup_globals($request,$target);
1.232 albertel 323: &Apache::inputtags::initialize_inputtags();
1.370 albertel 324: &Apache::bridgetask::initialize_bridgetask();
1.232 albertel 325: &Apache::outputtags::initialize_outputtags();
326: &Apache::edit::initialize_edit();
1.287 albertel 327: &Apache::londefdef::initialize_londefdef();
1.244 albertel 328:
1.178 www 329: #
330: # do we have a course style file?
331: #
332:
1.372 albertel 333: if ($env{'request.course.id'} && $env{'request.state'} ne 'construct') {
1.178 www 334: my $bodytext=
1.372 albertel 335: $env{'course.'.$env{'request.course.id'}.'.default_xml_style'};
1.178 www 336: if ($bodytext) {
1.337 albertel 337: foreach my $file (split(',',$bodytext)) {
338: my $location=&Apache::lonnet::filelocation('',$file);
339: my $styletext=&Apache::lonnet::getfile($location);
340: if ($styletext ne '-1') {
341: %style_for_target = (%style_for_target,
342: &Apache::style::styleparser($target,$styletext));
343: }
344: }
345: }
1.372 albertel 346: } elsif ($env{'construct.style'} && ($env{'request.state'} eq 'construct')) {
347: my $location=&Apache::lonnet::filelocation('',$env{'construct.style'});
1.291 sakharuk 348: my $styletext=&Apache::lonnet::getfile($location);
349: if ($styletext ne '-1') {
350: %style_for_target = (%style_for_target,
351: &Apache::style::styleparser($target,$styletext));
352: }
1.178 www 353: }
1.255 sakharuk 354: #&printalltags();
1.16 albertel 355: my @pars = ();
1.372 albertel 356: my $pwd=$env{'request.filename'};
1.23 albertel 357: $pwd =~ s:/[^/]*$::;
358: &newparser(\@pars,\$content_file_string,$pwd);
1.24 sakharuk 359:
1.3 sakharuk 360: my $safeeval = new Safe;
1.40 albertel 361: my $safehole = new Safe::Hole;
1.82 ng 362: &init_safespace($target,$safeeval,$safehole,$safeinit);
1.3 sakharuk 363: #-------------------- Redefinition of the target in the case of compound target
364:
365: ($target, my @tenta) = split('&&',$target);
366:
1.150 albertel 367: my @stack = ();
1.3 sakharuk 368: my @parstack = ();
1.358 albertel 369: &initdepth();
370: &init_alarm();
1.101 albertel 371: my $finaloutput = &inner_xmlparse($target,\@stack,\@parstack,\@pars,
372: $safeeval,\%style_for_target);
1.255 sakharuk 373:
1.372 albertel 374: if ($env{'request.uri'}) {
375: &writeallows($env{'request.uri'});
1.125 www 376: }
1.281 albertel 377: &do_registered_ssi();
1.204 albertel 378: if ($Apache::lonxml::counter_changed) { &store_counter() }
1.372 albertel 379: if ($env{'form.return_only_error_and_warning_counts'}) {
1.361 www 380: return "$errorcount:$warningcount";
381: }
1.3 sakharuk 382: return $finaloutput;
1.106 www 383: }
384:
1.191 albertel 385: sub latex_special_symbols {
1.272 albertel 386: my ($string,$where)=@_;
1.235 sakharuk 387: if ($where eq 'header') {
1.272 albertel 388: $string =~ s/(\\|_|\^)/ /g;
1.311 albertel 389: $string =~ s/(\$|%|\{|\})/\\$1/g;
1.273 sakharuk 390: $string =~ s/_/ /g;
1.311 albertel 391: $string=&Apache::lonprintout::character_chart($string);
392: # any & or # leftover should be safe to just escape
393: $string=~s/([^\\])\&/$1\\\&/g;
394: $string=~s/([^\\])\#/$1\\\#/g;
1.229 sakharuk 395: } else {
1.312 albertel 396: $string=~s/\\/\\ensuremath{\\backslash}/g;
1.367 albertel 397: $string=~s/\\\%|\%/\\\%/g;
398: $string=~s/\\{|{/\\{/g;
399: $string=~s/\\}|}/\\}/g;
1.378 albertel 400: $string=~s/\\ensuremath\\{\\backslash\\}/\\ensuremath{\\backslash}/g;
1.367 albertel 401: $string=~s/\\\$|\$/\\\$/g;
402: $string=~s/\\\_|\_/\\\_/g;
1.313 albertel 403: $string=~s/([^\\]|^)(\~|\^)/$1\\$2\\strut /g;
1.310 sakharuk 404: $string=~s/(>|<)/\\ensuremath\{$1\}/g; #more or less
1.311 albertel 405: $string=&Apache::lonprintout::character_chart($string);
406: # any & or # leftover should be safe to just escape
1.367 albertel 407: $string=~s/\\\&|\&/\\\&/g;
408: $string=~s/\\\#|\#/\\\#/g;
1.332 sakharuk 409: $string=~s/\|/\$\\mid\$/g;
1.310 sakharuk 410: #single { or } How to escape?
1.229 sakharuk 411: }
1.272 albertel 412: return $string;
1.188 sakharuk 413: }
414:
1.101 albertel 415: sub inner_xmlparse {
416: my ($target,$stack,$parstack,$pars,$safeeval,$style_for_target)=@_;
417: my $finaloutput = '';
418: my $result;
419: my $token;
1.258 albertel 420: my $dontpop=0;
1.389 ! albertel 421: my $startredirection = $Apache::lonxml::redirection;
1.101 albertel 422: while ( $#$pars > -1 ) {
423: while ($token = $$pars['-1']->get_token) {
1.261 albertel 424: if (($token->[0] eq 'T') || ($token->[0] eq 'C') ) {
1.101 albertel 425: if ($metamode<1) {
1.190 albertel 426: my $text=$token->[1];
1.193 albertel 427: if ($token->[0] eq 'C' && $target eq 'tex') {
1.239 sakharuk 428: $text = '';
429: # $text = '%'.$text."\n";
1.182 sakharuk 430: }
1.190 albertel 431: $result.=$text;
1.101 albertel 432: }
1.261 albertel 433: } elsif (($token->[0] eq 'D')) {
434: if ($metamode<1 && $target eq 'web') {
435: my $text=$token->[1];
436: $result.=$text;
437: }
1.101 albertel 438: } elsif ($token->[0] eq 'PI') {
1.261 albertel 439: if ($metamode<1 && $target eq 'web') {
1.101 albertel 440: $result=$token->[2];
441: }
442: } elsif ($token->[0] eq 'S') {
1.140 albertel 443: # add tag to stack
1.101 albertel 444: push (@$stack,$token->[1]);
445: # add parameters list to another stack
446: push (@$parstack,&parstring($token));
1.140 albertel 447: &increasedepth($token);
1.212 albertel 448: if ($Apache::lonxml::usestyle &&
449: exists($$style_for_target{$token->[1]})) {
450: $Apache::lonxml::usestyle=0;
451: my $string=$$style_for_target{$token->[1]}.
452: '<LONCAPA_INTERNAL_TURN_STYLE_ON />';
453: &Apache::lonxml::newparser($pars,\$string);
1.257 albertel 454: $Apache::lonxml::style_values=$$parstack[-1];
1.259 albertel 455: $Apache::lonxml::style_end_values=$$parstack[-1];
1.101 albertel 456: } else {
457: $result = &callsub("start_$token->[1]", $target, $token, $stack,
458: $parstack, $pars, $safeeval, $style_for_target);
1.140 albertel 459: }
1.101 albertel 460: } elsif ($token->[0] eq 'E') {
1.212 albertel 461: if ($Apache::lonxml::usestyle &&
462: exists($$style_for_target{'/'."$token->[1]"})) {
463: $Apache::lonxml::usestyle=0;
464: my $string=$$style_for_target{'/'.$token->[1]}.
1.258 albertel 465: '<LONCAPA_INTERNAL_TURN_STYLE_ON end="'.$token->[1].'" />';
1.212 albertel 466: &Apache::lonxml::newparser($pars,\$string);
1.259 albertel 467: $Apache::lonxml::style_values=$Apache::lonxml::style_end_values;
468: $Apache::lonxml::style_end_values='';
1.258 albertel 469: $dontpop=1;
1.101 albertel 470: } else {
1.258 albertel 471: #clear out any tags that didn't end
472: while ($token->[1] ne $$stack['-1'] && ($#$stack > -1)) {
473: my $lasttag=$$stack[-1];
1.317 albertel 474: if ($token->[1] =~ /^\Q$lasttag\E$/i) {
1.258 albertel 475: &Apache::lonxml::warning('Using tag </'.$token->[1].'> on line '.$token->[3].' as end tag to <'.$$stack[-1].'>');
476: last;
477: } else {
478: &Apache::lonxml::warning('Found tag </'.$token->[1].'> on line '.$token->[3].' when looking for </'.$$stack[-1].'> in file');
479: &end_tag($stack,$parstack,$token);
480: }
481: }
482: $result = &callsub("end_$token->[1]", $target, $token, $stack,
483: $parstack, $pars,$safeeval, $style_for_target);
1.101 albertel 484: }
485: } else {
486: &Apache::lonxml::error("Unknown token event :$token->[0]:$token->[1]:");
487: }
488: #evaluate variable refs in result
1.282 albertel 489: if ($Apache::lonxml::post_evaluate &&$result ne "") {
1.257 albertel 490: my $extras;
491: if (!$Apache::lonxml::usestyle) {
492: $extras=$Apache::lonxml::style_values;
493: }
1.101 albertel 494: if ( $#$parstack > -1 ) {
1.257 albertel 495: $result=&Apache::run::evaluate($result,$safeeval,$extras.$$parstack[-1]);
1.101 albertel 496: } else {
1.257 albertel 497: $result= &Apache::run::evaluate($result,$safeeval,$extras);
1.101 albertel 498: }
1.163 albertel 499: }
1.282 albertel 500: $Apache::lonxml::post_evaluate=1;
501:
1.190 albertel 502: if (($token->[0] eq 'T') || ($token->[0] eq 'C') || ($token->[0] eq 'D') ) {
1.249 albertel 503: #Style file definitions should be correct
1.250 albertel 504: if ($target eq 'tex' && ($Apache::lonxml::usestyle)) {
1.311 albertel 505: $result=&latex_special_symbols($result);
1.249 albertel 506: }
1.190 albertel 507: }
508:
1.169 albertel 509: if ($Apache::lonxml::redirection) {
510: $Apache::lonxml::outputstack['-1'] .= $result;
511: } else {
512: $finaloutput.=$result;
513: }
514: $result = '';
515:
1.258 albertel 516: if ($token->[0] eq 'E' && !$dontpop) {
1.101 albertel 517: &end_tag($stack,$parstack,$token);
518: }
1.258 albertel 519: $dontpop=0;
1.224 albertel 520: }
1.212 albertel 521: if ($#$pars > -1) {
522: pop @$pars;
523: pop @Apache::lonxml::pwd;
524: }
1.101 albertel 525: }
526:
527: # if ($target eq 'meta') {
528: # $finaloutput.=&endredirection;
529: # }
530:
1.387 albertel 531: if ($target eq 'grade') { &endredirection(); }
1.389 ! albertel 532: if ( $Apache::lonxml::redirection > $startredirection) {
! 533: while ($Apache::lonxml::redirection > $startredirection) {
! 534: $finaloutput .= &endredirection();
1.387 albertel 535: }
536: }
1.101 albertel 537: if (($ENV{'QUERY_STRING'}) && ($target eq 'web')) {
538: $finaloutput=&afterburn($finaloutput);
1.216 sakharuk 539: }
1.101 albertel 540: return $finaloutput;
541: }
1.67 www 542:
1.318 matthew 543: ##
544: ## Looks to see if there is a subroutine defined for this tag. If so, call it,
545: ## otherwise do not call it as we do not know what it is.
546: ##
1.7 albertel 547: sub callsub {
1.84 albertel 548: my ($sub,$target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.7 albertel 549: my $currentstring='';
1.72 albertel 550: my $nodefault;
1.7 albertel 551: {
1.59 albertel 552: my $sub1;
1.7 albertel 553: no strict 'refs';
1.68 www 554: my $tag=$token->[1];
1.236 www 555: # get utterly rid of extended html tags
556: if ($tag=~/^x\-/i) { return ''; }
1.141 albertel 557: my $space=$Apache::lonxml::alltags{$tag}[-1];
1.68 www 558: if (!$space) {
1.141 albertel 559: $tag=~tr/A-Z/a-z/;
1.68 www 560: $sub=~tr/A-Z/a-z/;
1.141 albertel 561: $space=$Apache::lonxml::alltags{$tag}[-1]
1.68 www 562: }
1.97 albertel 563:
564: my $deleted=0;
565: $Apache::lonxml::curdepth=join('_',@Apache::lonxml::depthcounter);
566: if (($token->[0] eq 'S') && ($target eq 'modified')) {
567: $deleted=&Apache::edit::handle_delete($space,$target,$token,$tagstack,
568: $parstack,$parser,$safeeval,
569: $style);
570: }
571: if (!$deleted) {
572: if ($space) {
1.220 albertel 573: #&Apache::lonxml::debug("Calling sub $sub in $space $metamode");
1.97 albertel 574: $sub1="$space\:\:$sub";
575: ($currentstring,$nodefault) = &$sub1($target,$token,$tagstack,
576: $parstack,$parser,$safeeval,
577: $style);
578: } else {
1.318 matthew 579: if ($target eq 'tex') {
580: # throw away tag name
581: return '';
582: }
1.220 albertel 583: #&Apache::lonxml::debug("NOT Calling sub $sub in $space $metamode");
1.97 albertel 584: if ($metamode <1) {
585: if (defined($token->[4]) && ($metamode < 1)) {
586: $currentstring = $token->[4];
587: } else {
588: $currentstring = $token->[2];
589: }
1.62 sakharuk 590: }
1.7 albertel 591: }
1.97 albertel 592: # &Apache::lonxml::debug("nodefalt:$nodefault:");
593: if ($currentstring eq '' && $nodefault eq '') {
594: if ($target eq 'edit') {
1.220 albertel 595: #&Apache::lonxml::debug("doing default edit for $token->[1]");
1.97 albertel 596: if ($token->[0] eq 'S') {
597: $currentstring = &Apache::edit::tag_start($target,$token);
598: } elsif ($token->[0] eq 'E') {
599: $currentstring = &Apache::edit::tag_end($target,$token);
600: }
601: } elsif ($target eq 'modified') {
602: if ($token->[0] eq 'S') {
603: $currentstring = $token->[4];
604: $currentstring.=&Apache::edit::handle_insert();
1.210 www 605: } elsif ($token->[0] eq 'E') {
606: $currentstring = $token->[2];
607: $currentstring.=&Apache::edit::handle_insertafter($token->[1]);
1.97 albertel 608: } else {
609: $currentstring = $token->[2];
610: }
1.72 albertel 611: }
612: }
1.7 albertel 613: }
614: use strict 'refs';
615: }
616: return $currentstring;
1.82 ng 617: }
618:
1.96 albertel 619: sub setup_globals {
1.172 albertel 620: my ($request,$target)=@_;
621: $Apache::lonxml::request=$request;
1.99 albertel 622: $Apache::lonxml::registered = 0;
1.325 www 623: @Apache::lonxml::htmlareafields=();
1.205 www 624: $errorcount=0;
625: $warningcount=0;
1.207 albertel 626: $Apache::lonxml::default_homework_loaded=0;
1.212 albertel 627: $Apache::lonxml::usestyle=1;
1.204 albertel 628: &init_counter();
1.101 albertel 629: @Apache::lonxml::pwd=();
1.124 albertel 630: @Apache::lonxml::extlinks=();
1.281 albertel 631: @Apache::lonxml::ssi_info=();
1.282 albertel 632: $Apache::lonxml::post_evaluate=1;
1.295 albertel 633: $Apache::lonxml::warnings_error_header='';
1.96 albertel 634: if ($target eq 'meta') {
635: $Apache::lonxml::redirection = 0;
636: $Apache::lonxml::metamode = 1;
637: $Apache::lonxml::evaluate = 1;
638: $Apache::lonxml::import = 0;
1.129 albertel 639: } elsif ($target eq 'answer') {
640: $Apache::lonxml::redirection = 0;
641: $Apache::lonxml::metamode = 1;
642: $Apache::lonxml::evaluate = 1;
643: $Apache::lonxml::import = 1;
1.96 albertel 644: } elsif ($target eq 'grade') {
1.387 albertel 645: &startredirection(); #ended in inner_xmlparse on exit
1.96 albertel 646: $Apache::lonxml::metamode = 0;
647: $Apache::lonxml::evaluate = 1;
648: $Apache::lonxml::import = 1;
649: } elsif ($target eq 'modified') {
650: $Apache::lonxml::redirection = 0;
651: $Apache::lonxml::metamode = 0;
652: $Apache::lonxml::evaluate = 0;
653: $Apache::lonxml::import = 0;
654: } elsif ($target eq 'edit') {
655: $Apache::lonxml::redirection = 0;
656: $Apache::lonxml::metamode = 0;
657: $Apache::lonxml::evaluate = 0;
658: $Apache::lonxml::import = 0;
1.163 albertel 659: } elsif ($target eq 'analyze') {
660: $Apache::lonxml::redirection = 0;
661: $Apache::lonxml::metamode = 0;
662: $Apache::lonxml::evaluate = 1;
663: $Apache::lonxml::import = 1;
1.96 albertel 664: } else {
665: $Apache::lonxml::redirection = 0;
666: $Apache::lonxml::metamode = 0;
667: $Apache::lonxml::evaluate = 1;
668: $Apache::lonxml::import = 1;
669: }
670: }
671:
1.82 ng 672: sub init_safespace {
673: my ($target,$safeeval,$safehole,$safeinit) = @_;
1.383 albertel 674: $safeeval->deny_only(':dangerous');
675: $safeeval->reval('use Math::Complex;');
676: $safeeval->permit_only(":default");
1.82 ng 677: $safeeval->permit("entereval");
678: $safeeval->permit(":base_math");
679: $safeeval->permit("sort");
1.286 albertel 680: $safeeval->permit("time");
1.371 albertel 681: $safeeval->deny("rand");
682: $safeeval->deny("srand");
1.82 ng 683: $safeeval->deny(":base_io");
1.102 albertel 684: $safehole->wrap(\&Apache::scripttag::xmlparse,$safeeval,'&xmlparse');
1.251 albertel 685: $safehole->wrap(\&Apache::outputtags::multipart,$safeeval,'&multipart');
1.82 ng 686: $safehole->wrap(\&Apache::lonnet::EXT,$safeeval,'&EXT');
1.324 albertel 687: $safehole->wrap(\&Apache::chemresponse::chem_standard_order,$safeeval,
688: '&chem_standard_order');
1.369 albertel 689: $safehole->wrap(\&Apache::response::check_status,$safeeval,'&check_status');
1.324 albertel 690:
1.82 ng 691: $safehole->wrap(\&Math::Cephes::asin,$safeeval,'&asin');
692: $safehole->wrap(\&Math::Cephes::acos,$safeeval,'&acos');
693: $safehole->wrap(\&Math::Cephes::atan,$safeeval,'&atan');
694: $safehole->wrap(\&Math::Cephes::sinh,$safeeval,'&sinh');
695: $safehole->wrap(\&Math::Cephes::cosh,$safeeval,'&cosh');
696: $safehole->wrap(\&Math::Cephes::tanh,$safeeval,'&tanh');
697: $safehole->wrap(\&Math::Cephes::asinh,$safeeval,'&asinh');
698: $safehole->wrap(\&Math::Cephes::acosh,$safeeval,'&acosh');
699: $safehole->wrap(\&Math::Cephes::atanh,$safeeval,'&atanh');
700: $safehole->wrap(\&Math::Cephes::erf,$safeeval,'&erf');
701: $safehole->wrap(\&Math::Cephes::erfc,$safeeval,'&erfc');
702: $safehole->wrap(\&Math::Cephes::j0,$safeeval,'&j0');
703: $safehole->wrap(\&Math::Cephes::j1,$safeeval,'&j1');
704: $safehole->wrap(\&Math::Cephes::jn,$safeeval,'&jn');
705: $safehole->wrap(\&Math::Cephes::jv,$safeeval,'&jv');
706: $safehole->wrap(\&Math::Cephes::y0,$safeeval,'&y0');
707: $safehole->wrap(\&Math::Cephes::y1,$safeeval,'&y1');
708: $safehole->wrap(\&Math::Cephes::yn,$safeeval,'&yn');
709: $safehole->wrap(\&Math::Cephes::yv,$safeeval,'&yv');
1.215 albertel 710:
711: $safehole->wrap(\&Math::Cephes::bdtr ,$safeeval,'&bdtr' );
712: $safehole->wrap(\&Math::Cephes::bdtrc ,$safeeval,'&bdtrc' );
713: $safehole->wrap(\&Math::Cephes::bdtri ,$safeeval,'&bdtri' );
714: $safehole->wrap(\&Math::Cephes::btdtr ,$safeeval,'&btdtr' );
715: $safehole->wrap(\&Math::Cephes::chdtr ,$safeeval,'&chdtr' );
716: $safehole->wrap(\&Math::Cephes::chdtrc,$safeeval,'&chdtrc');
717: $safehole->wrap(\&Math::Cephes::chdtri,$safeeval,'&chdtri');
718: $safehole->wrap(\&Math::Cephes::fdtr ,$safeeval,'&fdtr' );
719: $safehole->wrap(\&Math::Cephes::fdtrc ,$safeeval,'&fdtrc' );
720: $safehole->wrap(\&Math::Cephes::fdtri ,$safeeval,'&fdtri' );
721: $safehole->wrap(\&Math::Cephes::gdtr ,$safeeval,'&gdtr' );
722: $safehole->wrap(\&Math::Cephes::gdtrc ,$safeeval,'&gdtrc' );
723: $safehole->wrap(\&Math::Cephes::nbdtr ,$safeeval,'&nbdtr' );
724: $safehole->wrap(\&Math::Cephes::nbdtrc,$safeeval,'&nbdtrc');
725: $safehole->wrap(\&Math::Cephes::nbdtri,$safeeval,'&nbdtri');
726: $safehole->wrap(\&Math::Cephes::ndtr ,$safeeval,'&ndtr' );
727: $safehole->wrap(\&Math::Cephes::ndtri ,$safeeval,'&ndtri' );
728: $safehole->wrap(\&Math::Cephes::pdtr ,$safeeval,'&pdtr' );
729: $safehole->wrap(\&Math::Cephes::pdtrc ,$safeeval,'&pdtrc' );
730: $safehole->wrap(\&Math::Cephes::pdtri ,$safeeval,'&pdtri' );
731: $safehole->wrap(\&Math::Cephes::stdtr ,$safeeval,'&stdtr' );
732: $safehole->wrap(\&Math::Cephes::stdtri,$safeeval,'&stdtri');
733:
1.383 albertel 734: $safehole->wrap(\&Math::Cephes::Matrix::mat,$safeeval,'&mat');
735: $safehole->wrap(\&Math::Cephes::Matrix::new,$safeeval,
736: '&Math::Cephes::Matrix::new');
737: $safehole->wrap(\&Math::Cephes::Matrix::coef,$safeeval,
738: '&Math::Cephes::Matrix::coef');
739: $safehole->wrap(\&Math::Cephes::Matrix::clr,$safeeval,
740: '&Math::Cephes::Matrix::clr');
741: $safehole->wrap(\&Math::Cephes::Matrix::add,$safeeval,
742: '&Math::Cephes::Matrix::add');
743: $safehole->wrap(\&Math::Cephes::Matrix::sub,$safeeval,
744: '&Math::Cephes::Matrix::sub');
745: $safehole->wrap(\&Math::Cephes::Matrix::mul,$safeeval,
746: '&Math::Cephes::Matrix::mul');
747: $safehole->wrap(\&Math::Cephes::Matrix::div,$safeeval,
748: '&Math::Cephes::Matrix::div');
749: $safehole->wrap(\&Math::Cephes::Matrix::inv,$safeeval,
750: '&Math::Cephes::Matrix::inv');
751: $safehole->wrap(\&Math::Cephes::Matrix::transp,$safeeval,
752: '&Math::Cephes::Matrix::transp');
753: $safehole->wrap(\&Math::Cephes::Matrix::simq,$safeeval,
754: '&Math::Cephes::Matrix::simq');
755: $safehole->wrap(\&Math::Cephes::Matrix::mat_to_vec,$safeeval,
756: '&Math::Cephes::Matrix::mat_to_vec');
757: $safehole->wrap(\&Math::Cephes::Matrix::vec_to_mat,$safeeval,
758: '&Math::Cephes::Matrix::vec_to_mat');
759: $safehole->wrap(\&Math::Cephes::Matrix::check,$safeeval,
760: '&Math::Cephes::Matrix::check');
761: $safehole->wrap(\&Math::Cephes::Matrix::check,$safeeval,
762: '&Math::Cephes::Matrix::check');
763:
1.215 albertel 764: # $safehole->wrap(\&Math::Cephes::new_fract,$safeeval,'&new_fract');
765: # $safehole->wrap(\&Math::Cephes::radd,$safeeval,'&radd');
766: # $safehole->wrap(\&Math::Cephes::rsub,$safeeval,'&rsub');
767: # $safehole->wrap(\&Math::Cephes::rmul,$safeeval,'&rmul');
768: # $safehole->wrap(\&Math::Cephes::rdiv,$safeeval,'&rdiv');
769: # $safehole->wrap(\&Math::Cephes::euclid,$safeeval,'&euclid');
770:
1.91 ng 771: $safehole->wrap(\&Math::Random::random_beta,$safeeval,'&math_random_beta');
772: $safehole->wrap(\&Math::Random::random_chi_square,$safeeval,'&math_random_chi_square');
773: $safehole->wrap(\&Math::Random::random_exponential,$safeeval,'&math_random_exponential');
774: $safehole->wrap(\&Math::Random::random_f,$safeeval,'&math_random_f');
775: $safehole->wrap(\&Math::Random::random_gamma,$safeeval,'&math_random_gamma');
776: $safehole->wrap(\&Math::Random::random_multivariate_normal,$safeeval,'&math_random_multivariate_normal');
777: $safehole->wrap(\&Math::Random::random_multinomial,$safeeval,'&math_random_multinomial');
778: $safehole->wrap(\&Math::Random::random_noncentral_chi_square,$safeeval,'&math_random_noncentral_chi_square');
779: $safehole->wrap(\&Math::Random::random_noncentral_f,$safeeval,'&math_random_noncentral_f');
780: $safehole->wrap(\&Math::Random::random_normal,$safeeval,'&math_random_normal');
781: $safehole->wrap(\&Math::Random::random_permutation,$safeeval,'&math_random_permutation');
1.93 ng 782: $safehole->wrap(\&Math::Random::random_permuted_index,$safeeval,'&math_random_permuted_index');
1.91 ng 783: $safehole->wrap(\&Math::Random::random_uniform,$safeeval,'&math_random_uniform');
784: $safehole->wrap(\&Math::Random::random_poisson,$safeeval,'&math_random_poisson');
785: $safehole->wrap(\&Math::Random::random_uniform_integer,$safeeval,'&math_random_uniform_integer');
786: $safehole->wrap(\&Math::Random::random_negative_binomial,$safeeval,'&math_random_negative_binomial');
787: $safehole->wrap(\&Math::Random::random_binomial,$safeeval,'&math_random_binomial');
788: $safehole->wrap(\&Math::Random::random_seed_from_phrase,$safeeval,'&random_seed_from_phrase');
789: $safehole->wrap(\&Math::Random::random_set_seed_from_phrase,$safeeval,'&random_set_seed_from_phrase');
790: $safehole->wrap(\&Math::Random::random_get_seed,$safeeval,'&random_get_seed');
791: $safehole->wrap(\&Math::Random::random_set_seed,$safeeval,'&random_set_seed');
1.305 albertel 792: $safehole->wrap(\&Apache::lonxml::error,$safeeval,'&LONCAPA_INTERNAL_ERROR');
1.311 albertel 793: $safehole->wrap(\&Apache::lonxml::debug,$safeeval,'&LONCAPA_INTERNAL_DEBUG');
1.322 albertel 794: $safehole->wrap(\&Apache::caparesponse::get_sigrange,$safeeval,'&LONCAPA_INTERNAL_get_sigrange');
1.91 ng 795:
1.82 ng 796: #need to inspect this class of ops
797: # $safeeval->deny(":base_orig");
1.331 albertel 798: $safeeval->permit("require");
1.91 ng 799: $safeinit .= ';$external::target="'.$target.'";';
1.82 ng 800: &Apache::run::run($safeinit,$safeeval);
1.373 albertel 801: &initialize_rndseed($safeeval);
802: }
1.303 albertel 803:
1.373 albertel 804: sub initialize_rndseed {
805: my ($safeeval)=@_;
806: my $rndseed;
807: my ($symb,$courseid,$domain,$name) = &Apache::lonxml::whichuser();
808: $rndseed=&Apache::lonnet::rndseed($symb,$courseid,$domain,$name);
809: my $safeinit = '$external::randomseed="'.$rndseed.'";';
810: &Apache::lonxml::debug("Setting rndseed to $rndseed");
811: &Apache::run::run($safeinit,$safeeval);
1.207 albertel 812: }
813:
814: sub default_homework_load {
815: my ($safeeval)=@_;
816: &Apache::lonxml::debug('Loading default_homework');
817: my $default=&Apache::lonnet::getfile('/home/httpd/html/res/adm/includes/default_homework.lcpm');
1.241 albertel 818: if ($default eq -1) {
1.207 albertel 819: &Apache::lonxml::error("<b>Unable to find <i>default_homework.lcpm</i></b>");
820: } else {
821: &Apache::run::run($default,$safeeval);
822: $Apache::lonxml::default_homework_loaded=1;
823: }
1.17 albertel 824: }
825:
1.358 albertel 826: {
827: my $alarm_depth;
828: sub init_alarm {
829: alarm(0);
830: $alarm_depth=0;
831: }
832:
833: sub start_alarm {
834: if ($alarm_depth<1) {
835: my $old=alarm($Apache::lonnet::perlvar{'lonScriptTimeout'});
836: if ($old) {
837: &Apache::lonxml::error("Cancelled an alarm of $old, this shouldn't occur.");
838: }
839: }
840: $alarm_depth++;
841: }
842:
843: sub end_alarm {
844: $alarm_depth--;
845: if ($alarm_depth<1) { alarm(0); }
846: }
847: }
1.328 albertel 848: my $metamode_was;
1.55 albertel 849: sub startredirection {
1.328 albertel 850: if (!$Apache::lonxml::redirection) {
851: $metamode_was=$Apache::lonxml::metamode;
852: }
853: $Apache::lonxml::metamode=0;
854: $Apache::lonxml::redirection++;
855: push (@Apache::lonxml::outputstack, '');
1.55 albertel 856: }
857:
858: sub endredirection {
1.328 albertel 859: if (!$Apache::lonxml::redirection) {
1.380 www 860: &Apache::lonxml::error("Endredirection was called before a startredirection, perhaps you have unbalanced tags. Some debugging information:".join ":",caller);
1.328 albertel 861: return '';
862: }
863: $Apache::lonxml::redirection--;
864: if (!$Apache::lonxml::redirection) {
865: $Apache::lonxml::metamode=$metamode_was;
866: }
867: pop @Apache::lonxml::outputstack;
1.97 albertel 868: }
869:
870: sub end_tag {
871: my ($tagstack,$parstack,$token)=@_;
872: pop(@$tagstack);
873: pop(@$parstack);
874: &decreasedepth($token);
1.55 albertel 875: }
876:
1.17 albertel 877: sub initdepth {
878: @Apache::lonxml::depthcounter=();
879: $Apache::lonxml::depth=-1;
880: $Apache::lonxml::olddepth=-1;
881: }
882:
1.339 albertel 883: my @timers;
884: my $lasttime;
1.17 albertel 885: sub increasedepth {
1.19 albertel 886: my ($token) = @_;
1.17 albertel 887: $Apache::lonxml::depth++;
888: $Apache::lonxml::depthcounter[$Apache::lonxml::depth]++;
889: if ($Apache::lonxml::depthcounter[$Apache::lonxml::depth]==1) {
890: $Apache::lonxml::olddepth=$Apache::lonxml::depth;
891: }
1.340 albertel 892: my $time;
893: if ($Apache::lonxml::debug eq "1") {
894: push(@timers,[&gettimeofday()]);
895: $time=&tv_interval($lasttime);
896: $lasttime=[&gettimeofday()];
897: }
1.339 albertel 898: my $spacing=' 'x($Apache::lonxml::depth-1);
1.42 albertel 899: my $curdepth=join('_',@Apache::lonxml::depthcounter);
1.339 albertel 900: &Apache::lonxml::debug("s$spacing$Apache::lonxml::depth : $Apache::lonxml::olddepth : $curdepth : $token->[1] : $time : \n");
1.54 albertel 901: #print "<br />s $Apache::lonxml::depth : $Apache::lonxml::olddepth : $curdepth : $token->[1]\n";
1.17 albertel 902: }
903:
904: sub decreasedepth {
1.19 albertel 905: my ($token) = @_;
1.17 albertel 906: $Apache::lonxml::depth--;
1.36 albertel 907: if ($Apache::lonxml::depth<$Apache::lonxml::olddepth-1) {
908: $#Apache::lonxml::depthcounter--;
909: $Apache::lonxml::olddepth=$Apache::lonxml::depth+1;
910: }
1.43 albertel 911: if ( $Apache::lonxml::depth < -1) {
1.280 www 912: &Apache::lonxml::warning(&mt("Missing tags, unable to properly run file."));
1.43 albertel 913: $Apache::lonxml::depth='-1';
914: }
1.340 albertel 915: my ($timer,$time);
916: if ($Apache::lonxml::debug eq "1") {
917: $timer=pop(@timers);
918: $time=&tv_interval($lasttime);
919: $lasttime=[&gettimeofday()];
920: }
1.339 albertel 921: my $spacing=' 'x$Apache::lonxml::depth;
1.42 albertel 922: my $curdepth=join('_',@Apache::lonxml::depthcounter);
1.339 albertel 923: &Apache::lonxml::debug("e$spacing$Apache::lonxml::depth : $Apache::lonxml::olddepth : $curdepth : $token->[1] : $time : ".&tv_interval($timer)."\n");
1.54 albertel 924: #print "<br />e $Apache::lonxml::depth : $Apache::lonxml::olddepth : $token->[1] : $curdepth\n";
1.1 sakharuk 925: }
1.19 albertel 926:
1.180 albertel 927: sub get_all_text_unbalanced {
1.190 albertel 928: #there is a copy of this in lonpublisher.pm
1.326 albertel 929: my($tag,$pars)= @_;
930: my $token;
931: my $result='';
932: $tag='<'.$tag.'>';
933: while ($token = $$pars[-1]->get_token) {
934: if (($token->[0] eq 'T')||($token->[0] eq 'C')||($token->[0] eq 'D')) {
1.386 albertel 935: if ($token->[0] eq 'T' && $token->[2]) {
1.382 albertel 936: $result.='<![CDATA['.$token->[1].']]>';
937: } else {
938: $result.=$token->[1];
939: }
1.326 albertel 940: } elsif ($token->[0] eq 'PI') {
941: $result.=$token->[2];
942: } elsif ($token->[0] eq 'S') {
943: $result.=$token->[4];
944: } elsif ($token->[0] eq 'E') {
945: $result.=$token->[2];
946: }
947: if ($result =~ /\Q$tag\E/is) {
948: ($result,my $redo)=$result =~ /(.*)\Q$tag\E(.*)/is;
949: #&Apache::lonxml::debug('Got a winner with leftovers ::'.$2);
950: #&Apache::lonxml::debug('Result is :'.$1);
951: $redo=$tag.$redo;
952: &Apache::lonxml::newparser($pars,\$redo);
953: last;
954: }
955: }
956: return $result
1.204 albertel 957: }
958:
959: sub increment_counter {
1.247 albertel 960: my ($increment) = @_;
1.289 sakharuk 961: if (defined($increment) && $increment gt 0) {
962: $Apache::lonxml::counter+=$increment;
963: } else {
964: $Apache::lonxml::counter++;
1.247 albertel 965: }
1.289 sakharuk 966: $Apache::lonxml::counter_changed=1;
1.204 albertel 967: }
968:
969: sub init_counter {
1.372 albertel 970: if (defined($env{'form.counter'})) {
971: $Apache::lonxml::counter=$env{'form.counter'};
1.247 albertel 972: $Apache::lonxml::counter_changed=0;
1.237 sakharuk 973: } else {
1.204 albertel 974: $Apache::lonxml::counter=1;
1.247 albertel 975: $Apache::lonxml::counter_changed=1;
1.204 albertel 976: }
977: }
978:
979: sub store_counter {
980: &Apache::lonnet::appenv(('form.counter' => $Apache::lonxml::counter));
981: return '';
1.180 albertel 982: }
983:
1.19 albertel 984: sub get_all_text {
1.270 albertel 985: my($tag,$pars,$style)= @_;
986: my $gotfullstack=1;
987: if (ref($pars) ne 'ARRAY') {
988: $gotfullstack=0;
989: $pars=[$pars];
990: }
991: if (ref($style) ne 'HASH') {
992: $style={};
993: }
994: my $depth=0;
995: my $token;
996: my $result='';
997: if ( $tag =~ m:^/: ) {
998: my $tag=substr($tag,1);
999: #&Apache::lonxml::debug("have:$tag:");
1000: my $top_empty=0;
1001: while (($depth >=0) && ($#$pars > -1) && (!$top_empty)) {
1002: while (($depth >=0) && ($token = $$pars[-1]->get_token)) {
1003: #&Apache::lonxml::debug("e token:$token->[0]:$depth:$token->[1]:".$#$pars.":".$#Apache::lonxml::pwd);
1004: if (($token->[0] eq 'T')||($token->[0] eq 'C')||($token->[0] eq 'D')) {
1.382 albertel 1005: if ($token->[2]) {
1006: $result.='<![CDATA['.$token->[1].']]>';
1007: } else {
1008: $result.=$token->[1];
1009: }
1.270 albertel 1010: } elsif ($token->[0] eq 'PI') {
1011: $result.=$token->[2];
1012: } elsif ($token->[0] eq 'S') {
1.316 albertel 1013: if ($token->[1] =~ /^\Q$tag\E$/i) { $depth++; }
1014: if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_ON$/) { $Apache::lonxml::usestyle=1; }
1015: if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_OFF$/) { $Apache::lonxml::usestyle=0; }
1.270 albertel 1016: $result.=$token->[4];
1017: } elsif ($token->[0] eq 'E') {
1.316 albertel 1018: if ( $token->[1] =~ /^\Q$tag\E$/i) { $depth--; }
1.270 albertel 1019: #skip sending back the last end tag
1.283 albertel 1020: if ($depth == 0 && exists($$style{'/'.$token->[1]}) && $Apache::lonxml::usestyle) {
1.270 albertel 1021: my $string=
1022: '<LONCAPA_INTERNAL_TURN_STYLE_OFF end="yes" />'.
1023: $$style{'/'.$token->[1]}.
1024: $token->[2].
1025: '<LONCAPA_INTERNAL_TURN_STYLE_ON />';
1026: &Apache::lonxml::newparser($pars,\$string);
1027: #&Apache::lonxml::debug("reParsing $string");
1028: next;
1029: }
1030: if ($depth > -1) {
1031: $result.=$token->[2];
1032: } else {
1033: $$pars[-1]->unget_token($token);
1034: }
1035: }
1036: }
1037: if (($depth >=0) && ($#$pars == 0) ) { $top_empty=1; }
1038: if (($depth >=0) && ($#$pars > 0) ) {
1039: pop(@$pars);
1040: pop(@Apache::lonxml::pwd);
1041: }
1042: }
1043: if ($top_empty && $depth >= 0) {
1044: #never found the end tag ran out of text, throw error send back blank
1045: &error('Never found end tag for <'.$tag.
1046: '> current string <pre>'.
1.314 albertel 1047: &HTML::Entities::encode($result,'<>&"').
1.270 albertel 1048: '</pre>');
1049: if ($gotfullstack) {
1050: my $newstring='</'.$tag.'>'.$result;
1051: &Apache::lonxml::newparser($pars,\$newstring);
1052: }
1053: $result='';
1054: }
1055: } else {
1056: while ($#$pars > -1) {
1057: while ($token = $$pars[-1]->get_token) {
1058: #&Apache::lonxml::debug("s token:$token->[0]:$depth:$token->[1]");
1059: if (($token->[0] eq 'T')||($token->[0] eq 'C')||
1060: ($token->[0] eq 'D')) {
1.382 albertel 1061: if ($token->[2]) {
1062: $result.='<![CDATA['.$token->[1].']]>';
1063: } else {
1064: $result.=$token->[1];
1065: }
1.270 albertel 1066: } elsif ($token->[0] eq 'PI') {
1067: $result.=$token->[2];
1068: } elsif ($token->[0] eq 'S') {
1.316 albertel 1069: if ( $token->[1] =~ /^\Q$tag\E$/i) {
1.270 albertel 1070: $$pars[-1]->unget_token($token); last;
1071: } else {
1072: $result.=$token->[4];
1073: }
1.316 albertel 1074: if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_ON$/) { $Apache::lonxml::usestyle=1; }
1075: if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_OFF$/) { $Apache::lonxml::usestyle=0; }
1.270 albertel 1076: } elsif ($token->[0] eq 'E') {
1077: $result.=$token->[2];
1078: }
1079: }
1080: if (($#$pars > 0) ) {
1081: pop(@$pars);
1082: pop(@Apache::lonxml::pwd);
1083: } else { last; }
1084: }
1085: }
1086: #&Apache::lonxml::debug("Exit:$result:");
1087: return $result
1.19 albertel 1088: }
1089:
1.23 albertel 1090: sub newparser {
1091: my ($parser,$contentref,$dir) = @_;
1.167 albertel 1092: push (@$parser,HTML::LCParser->new($contentref));
1.365 albertel 1093: $$parser[-1]->xml_mode(1);
1094: $$parser[-1]->marked_sections(1);
1.23 albertel 1095: if ( $dir eq '' ) {
1096: push (@Apache::lonxml::pwd, $Apache::lonxml::pwd[$#Apache::lonxml::pwd]);
1097: } else {
1098: push (@Apache::lonxml::pwd, $dir);
1099: }
1100: }
1.1 sakharuk 1101:
1.8 albertel 1102: sub parstring {
1103: my ($token) = @_;
1104: my $temp='';
1.142 albertel 1105: foreach (@{$token->[3]}) {
1.35 www 1106: unless ($_=~/\W/) {
1.42 albertel 1107: my $val=$token->[2]->{$_};
1.231 albertel 1108: $val =~ s/([\%\@\\\"\'])/\\$1/g;
1.342 albertel 1109: $val =~ s/(\$[^{a-zA-Z_])/\\$1/g;
1.346 albertel 1110: $val =~ s/(\$)$/\\$1/;
1.51 albertel 1111: #if ($val =~ m/^[\%\@]/) { $val="\\".$val; }
1.267 sakharuk 1112: $temp .= "my \$$_=\"$val\";";
1.20 albertel 1113: }
1.142 albertel 1114: }
1.8 albertel 1115: return $temp;
1116: }
1.22 albertel 1117:
1.384 albertel 1118: sub extlink {
1119: my ($res,$exact)=@_;
1120: if (!$exact) {
1121: $res=&Apache::lonnet::hreflocation($Apache::lonxml::pwd[-1],$res);
1122: }
1123: push(@Apache::lonxml::extlinks,$res)
1124: }
1125:
1.34 www 1126: sub writeallows {
1.126 www 1127: unless ($#extlinks>=0) { return; }
1.377 albertel 1128: my $thisurl = &Apache::lonnet::clutter(shift);
1.372 albertel 1129: if ($env{'httpref.'.$thisurl}) {
1130: $thisurl=$env{'httpref.'.$thisurl};
1.111 www 1131: }
1.34 www 1132: my $thisdir=$thisurl;
1133: $thisdir=~s/\/[^\/]+$//;
1134: my %httpref=();
1.142 albertel 1135: foreach (@extlinks) {
1.34 www 1136: $httpref{'httpref.'.
1.125 www 1137: &Apache::lonnet::hreflocation($thisdir,$_)}=$thisurl;
1.142 albertel 1138: }
1.126 www 1139: @extlinks=();
1.34 www 1140: &Apache::lonnet::appenv(%httpref);
1141: }
1142:
1.281 albertel 1143: sub register_ssi {
1144: my ($url,%form)=@_;
1145: push (@Apache::lonxml::ssi_info,{'url'=>$url,'form'=>\%form});
1146: return '';
1147: }
1148:
1149: sub do_registered_ssi {
1150: foreach my $info (@Apache::lonxml::ssi_info) {
1151: my %form=%{ $info->{'form'}};
1152: my $url=$info->{'url'};
1153: &Apache::lonnet::ssi($url,%form);
1154: }
1155: }
1.66 www 1156: #
1157: # Afterburner handles anchors, highlights and links
1158: #
1159: sub afterburn {
1160: my $result=shift;
1.154 albertel 1161: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
1162: ['highlight','anchor','link']);
1.372 albertel 1163: if ($env{'form.highlight'}) {
1164: foreach (split(/\,/,$env{'form.highlight'})) {
1.66 www 1165: my $anchorname=$_;
1166: my $matchthis=$anchorname;
1167: $matchthis=~s/\_+/\\s\+/g;
1.317 albertel 1168: $result=~s/(\Q$matchthis\E)/\<font color=\"red\"\>$1\<\/font\>/gs;
1.142 albertel 1169: }
1.66 www 1170: }
1.372 albertel 1171: if ($env{'form.link'}) {
1172: foreach (split(/\,/,$env{'form.link'})) {
1.66 www 1173: my ($anchorname,$linkurl)=split(/\>/,$_);
1174: my $matchthis=$anchorname;
1175: $matchthis=~s/\_+/\\s\+/g;
1.317 albertel 1176: $result=~s/(\Q$matchthis\E)/\<a href=\"$linkurl\"\>$1\<\/a\>/gs;
1.142 albertel 1177: }
1.66 www 1178: }
1.372 albertel 1179: if ($env{'form.anchor'}) {
1180: my $anchorname=$env{'form.anchor'};
1.66 www 1181: my $matchthis=$anchorname;
1182: $matchthis=~s/\_+/\\s\+/g;
1.317 albertel 1183: $result=~s/(\Q$matchthis\E)/\<a name=\"$anchorname\"\>$1\<\/a\>/s;
1.66 www 1184: $result.=(<<"ENDSCRIPT");
1.226 albertel 1185: <script type="text/javascript">
1.66 www 1186: document.location.hash='$anchorname';
1187: </script>
1188: ENDSCRIPT
1189: }
1190: return $result;
1191: }
1192:
1.79 www 1193: sub storefile {
1194: my ($file,$contents)=@_;
1.290 albertel 1195: &Apache::lonnet::correct_line_ends(\$contents);
1.79 www 1196: if (my $fh=Apache::File->new('>'.$file)) {
1197: print $fh $contents;
1198: $fh->close();
1.271 www 1199: return 1;
1.147 albertel 1200: } else {
1.271 www 1201: &warning("Unable to save file $file");
1202: return 0;
1.79 www 1203: }
1204: }
1205:
1.151 albertel 1206: sub createnewhtml {
1.321 www 1207: my $title=&mt('Title of document goes here');
1208: my $body=&mt('Body of document goes here');
1209: my $filecontents=(<<SIMPLECONTENT);
1.78 www 1210: <html>
1211: <head>
1.321 www 1212: <title>$title</title>
1.78 www 1213: </head>
1214: <body bgcolor="#FFFFFF">
1.321 www 1215: $body
1.78 www 1216: </body>
1217: </html>
1218: SIMPLECONTENT
1.321 www 1219: return $filecontents;
1.151 albertel 1220: }
1221:
1.274 albertel 1222: sub createnewsty {
1223: my $filecontents=(<<SIMPLECONTENT);
1224: <definetag name="">
1225: <render>
1226: <web></web>
1227: <tex></tex>
1228: </render>
1229: </definetag>
1230: SIMPLECONTENT
1231: return $filecontents;
1232: }
1233:
1.147 albertel 1234:
1.151 albertel 1235: sub inserteditinfo {
1.274 albertel 1236: my ($result,$filecontents,$filetype)=@_;
1.314 albertel 1237: $filecontents = &HTML::Entities::encode($filecontents,'<>&"');
1.147 albertel 1238: # my $editheader='<a href="#editsection">Edit below</a><hr />';
1.274 albertel 1239: my $xml_help = '';
1.321 www 1240: my $initialize='';
1.274 albertel 1241: if ($filetype eq 'html') {
1.323 www 1242: my $addbuttons=&Apache::lonhtmlcommon::htmlareaaddbuttons();
1.333 www 1243: $initialize=&Apache::lonhtmlcommon::htmlareaheaders().
1.347 albertel 1244: &Apache::lonhtmlcommon::spellheader();
1245: if (!&Apache::lonhtmlcommon::htmlareablocked() &&
1246: &Apache::lonhtmlcommon::htmlareabrowser()) {
1247: $initialize.=(<<FULLPAGE);
1.321 www 1248: <script type="text/javascript">
1.323 www 1249: $addbuttons
1250:
1.321 www 1251: HTMLArea.loadPlugin("FullPage");
1252:
1253: function initDocument() {
1.323 www 1254: var editor=new HTMLArea("filecont",config);
1.321 www 1255: editor.registerPlugin(FullPage);
1256: editor.generate();
1257: }
1258: </script>
1259: FULLPAGE
1.347 albertel 1260: } else {
1261: $initialize.=(<<FULLPAGE);
1262: <script type="text/javascript">
1263: $addbuttons
1264: function initDocument() {
1265: }
1266: </script>
1267: FULLPAGE
1268: }
1.321 www 1269: $result=~s/\<body([^\>]*)\>/\<body onload="initDocument()" $1\>/i;
1270: $xml_help=&Apache::loncommon::helpLatexCheatsheet();
1.274 albertel 1271: }
1272: my $cleanbut = '';
1.374 www 1273:
1.254 albertel 1274: my $titledisplay=&display_title();
1.280 www 1275: my %lt=&Apache::lonlocal::texthash('st' => 'Save this',
1276: 'vi' => 'View',
1277: 'ed' => 'Edit');
1.161 albertel 1278: my $buttons=(<<BUTTONS);
1.274 albertel 1279: $cleanbut
1.304 matthew 1280: <input type="submit" name="savethisfile" accesskey="s" value="$lt{'st'}" />
1281: <input type="submit" name="viewmode" accesskey="v" value="$lt{'vi'}" />
1.161 albertel 1282: BUTTONS
1.333 www 1283: $buttons.=&Apache::lonhtmlcommon::spelllink('xmledit','filecont');
1.338 albertel 1284: $buttons.=&Apache::lonhtmlcommon::htmlareaselectactive('filecont');
1.78 www 1285: my $editfooter=(<<ENDFOOTER);
1.321 www 1286: $initialize
1.78 www 1287: <hr />
1288: <a name="editsection" />
1.333 www 1289: <form method="post" name="xmledit">
1.240 albertel 1290: $xml_help
1.280 www 1291: <input type="hidden" name="editmode" value="$lt{'ed'}" />
1.170 www 1292: $buttons<br />
1.366 albertel 1293: <textarea style="width:100%" cols="80" rows="44" name="filecont" id="filecont">$filecontents</textarea>
1.170 www 1294: <br />$buttons
1.78 www 1295: <br />
1296: </form>
1.254 albertel 1297: $titledisplay
1.321 www 1298: </body>
1.78 www 1299: ENDFOOTER
1.147 albertel 1300: # $result=~s/(\<body[^\>]*\>)/$1$editheader/is;
1.78 www 1301: $result=~s/(\<\/body\>)/$editfooter/is;
1302: return $result;
1303: }
1304:
1.152 albertel 1305: sub get_target {
1.372 albertel 1306: my $viewgrades=&Apache::lonnet::allowed('vgr',$env{'request.course.id'});
1307: if ( $env{'request.state'} eq 'published') {
1308: if ( defined($env{'form.grade_target'})
1.152 albertel 1309: && ($viewgrades == 'F' )) {
1.372 albertel 1310: return ($env{'form.grade_target'});
1311: } elsif (defined($env{'form.grade_target'})) {
1312: if (($env{'form.grade_target'} eq 'web') ||
1313: ($env{'form.grade_target'} eq 'tex') ) {
1314: return $env{'form.grade_target'}
1.153 albertel 1315: } else {
1316: return 'web';
1317: }
1.152 albertel 1318: } else {
1319: return 'web';
1320: }
1.372 albertel 1321: } elsif ($env{'request.state'} eq 'construct') {
1322: if ( defined($env{'form.grade_target'})) {
1323: return ($env{'form.grade_target'});
1.152 albertel 1324: } else {
1325: return 'web';
1326: }
1327: } else {
1328: return 'web';
1329: }
1330: }
1331:
1.24 sakharuk 1332: sub handler {
1.255 sakharuk 1333: my $request=shift;
1334:
1335: my $target=&get_target();
1336:
1.372 albertel 1337: $Apache::lonxml::debug=$env{'user.debug'};
1.255 sakharuk 1338:
1.364 albertel 1339: &Apache::loncommon::content_type($request,'text/html');
1.255 sakharuk 1340: &Apache::loncommon::no_cache($request);
1.372 albertel 1341: if ($env{'request.state'} eq 'published') {
1.363 albertel 1342: $request->set_last_modified(&Apache::lonnet::metadata($request->uri,
1343: 'lastrevisiondate'));
1344: }
1.255 sakharuk 1345: $request->send_http_header;
1346:
1347: return OK if $request->header_only;
1.68 www 1348:
1349:
1.255 sakharuk 1350: my $file=&Apache::lonnet::filelocation("",$request->uri);
1.274 albertel 1351: my $filetype;
1352: if ($file =~ /\.sty$/) {
1353: $filetype='sty';
1354: } else {
1355: $filetype='html';
1356: }
1.78 www 1357: #
1358: # Edit action? Save file.
1359: #
1.372 albertel 1360: unless ($env{'request.state'} eq 'published') {
1.374 www 1361: if ($env{'form.savethisfile'}) {
1.372 albertel 1362: if (&storefile($file,$env{'form.filecont'})) {
1.309 albertel 1363: &Apache::lonxml::info("<font COLOR=\"#0000FF\">".
1364: &mt('Updated').": ".
1365: &Apache::lonlocal::locallocaltime(time).
1366: " </font>");
1.271 www 1367: }
1.255 sakharuk 1368: }
1369: }
1370: my %mystyle;
1371: my $result = '';
1372: my $filecontents=&Apache::lonnet::getfile($file);
1373: if ($filecontents eq -1) {
1.284 www 1374: my $bodytag=&Apache::loncommon::bodytag('File Error');
1375: my $fnf=&mt('File not found');
1.255 sakharuk 1376: $result=(<<ENDNOTFOUND);
1.78 www 1377: <html>
1378: <head>
1.284 www 1379: <title>$fnf</title>
1.78 www 1380: </head>
1.284 www 1381: $bodytag
1382: <b>$fnf: $file</b>
1.78 www 1383: </body>
1384: </html>
1385: ENDNOTFOUND
1.343 albertel 1386: $filecontents='';
1.372 albertel 1387: if ($env{'request.state'} ne 'published') {
1.274 albertel 1388: if ($filetype eq 'sty') {
1389: $filecontents=&createnewsty();
1390: } else {
1391: $filecontents=&createnewhtml();
1392: }
1.372 albertel 1393: $env{'form.editmode'}='Edit'; #force edit mode
1.255 sakharuk 1394: }
1395: } else {
1.372 albertel 1396: unless ($env{'request.state'} eq 'published') {
1.343 albertel 1397: if ($filecontents=~/BEGIN LON-CAPA Internal/) {
1.381 www 1398: &Apache::lonxml::error(&mt('This file appears to be a rendering of a LON-CAPA resource. If this is correct, this resource will act very oddly and incorrectly.'));
1.343 albertel 1399: }
1.264 www 1400: #
1401: # we are in construction space, see if edit mode forced
1.385 albertel 1402: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
1403: ['editmode']);
1.255 sakharuk 1404: }
1.372 albertel 1405: if (!$env{'form.editmode'} || $env{'form.viewmode'}) {
1.255 sakharuk 1406: $result = &Apache::lonxml::xmlparse($request,$target,$filecontents,
1407: '',%mystyle);
1.368 albertel 1408: undef($Apache::lonhomework::parsing_a_task);
1.385 albertel 1409: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
1410: ['rawmode']);
1411: if ($env{'rawmode'}) { $result = $filecontents; }
1.255 sakharuk 1412: }
1.147 albertel 1413: }
1.255 sakharuk 1414:
1.78 www 1415: #
1416: # Edit action? Insert editing commands
1417: #
1.372 albertel 1418: unless ($env{'request.state'} eq 'published') {
1419: if ($env{'form.editmode'} && (!($env{'form.viewmode'}))) {
1.255 sakharuk 1420: my $displayfile=$request->uri;
1421: $displayfile=~s/^\/[^\/]*//;
1.349 albertel 1422: my $bodytag='<body bgcolor="#FFFFFF">';
1.372 albertel 1423: if ($env{'environment.remote'} eq 'off') {
1.349 albertel 1424: $bodytag=&Apache::loncommon::bodytag();
1425: }
1426: $result='<html>'.$bodytag.
1.309 albertel 1427: &Apache::lonxml::message_location().'<h3>'.
1428: $displayfile.
1.255 sakharuk 1429: '</h3></body></html>';
1.274 albertel 1430: $result=&inserteditinfo($result,$filecontents,$filetype);
1.255 sakharuk 1431: }
1.147 albertel 1432: }
1.274 albertel 1433: if ($filetype eq 'html') { writeallows($request->uri); }
1434:
1.255 sakharuk 1435:
1.309 albertel 1436: &Apache::lonxml::add_messages(\$result);
1.255 sakharuk 1437: $request->print($result);
1438:
1439: return OK;
1.253 albertel 1440: }
1441:
1442: sub display_title {
1443: my $result;
1.372 albertel 1444: if ($env{'request.state'} eq 'construct') {
1.253 albertel 1445: my $title=&Apache::lonnet::gettitle();
1446: if (!defined($title) || $title eq '') {
1.372 albertel 1447: $title = $env{'request.filename'};
1.253 albertel 1448: $title = substr($title, rindex($title, '/') + 1);
1449: }
1450: $result = "<script type='text/javascript'>top.document.title = '$title - LON-CAPA Construction Space';</script>";
1451: }
1452: return $result;
1.24 sakharuk 1453: }
1.147 albertel 1454:
1.22 albertel 1455: sub debug {
1.298 albertel 1456: if ($Apache::lonxml::debug eq "1") {
1457: $|=1;
1.300 albertel 1458: my $request=$Apache::lonxml::request;
1.388 albertel 1459: if (!$request) {
1460: eval { $request=Apache->request; };
1461: }
1462: if (!$request) {
1463: eval { $request=Apache2::RequestUtil->request; };
1464: }
1.314 albertel 1465: $request->print('<font size="-2"><pre>DEBUG:'.&HTML::Entities::encode($_[0],'<>&"')."</pre></font>\n");
1.346 albertel 1466: #&Apache::lonnet::logthis($_[0]);
1.298 albertel 1467: }
1.22 albertel 1468: }
1.49 albertel 1469:
1.348 albertel 1470: sub show_error_warn_msg {
1.372 albertel 1471: if ($env{'request.filename'} eq '/home/httpd/html/res/lib/templates/simpleproblem.problem' &&
1472: &Apache::lonnet::allowed('mdc',$env{'request.course.id'})) {
1.351 albertel 1473: return 1;
1474: }
1.348 albertel 1475: return (($Apache::lonxml::debug eq 1) ||
1.372 albertel 1476: ($env{'request.state'} eq 'construct') ||
1.348 albertel 1477: ($Apache::lonhomework::browse eq 'F'
1478: &&
1.372 albertel 1479: $env{'form.show_errors'} eq 'on'));
1.348 albertel 1480: }
1481:
1.22 albertel 1482: sub error {
1.336 albertel 1483: $errorcount++;
1.348 albertel 1484: if ( &show_error_warn_msg() ) {
1.336 albertel 1485: # If printing in construction space, put the error inside <pre></pre>
1486: push(@Apache::lonxml::error_messages,
1487: $Apache::lonxml::warnings_error_header.
1488: "<b>ERROR:</b>".join("<br />\n",@_)."<br />\n");
1489: $Apache::lonxml::warnings_error_header='';
1490: } else {
1491: my $errormsg;
1492: my ($symb)=&Apache::lonnet::symbread();
1493: if ( !$symb ) {
1494: #public or browsers
1495: $errormsg=&mt("An error occured while processing this resource. The author has been notified.");
1496: }
1497: #notify author
1.372 albertel 1498: &Apache::lonmsg::author_res_msg($env{'request.filename'},join('<br />',@_));
1.336 albertel 1499: #notify course
1.372 albertel 1500: if ( $symb && $env{'request.course.id'} ) {
1.380 www 1501: my $cnum=$env{'course.'.$env{'request.course.id'}.'.num'};
1502: my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
1.336 albertel 1503: my (undef,%users)=&Apache::lonfeedback::decide_receiver(undef,0,1,1,1);
1.372 albertel 1504: my $declutter=&Apache::lonnet::declutter($env{'request.filename'});
1.336 albertel 1505: my @userlist;
1506: foreach (keys %users) {
1507: my ($user,$domain) = split(/:/, $_);
1508: push(@userlist,"$user\@$domain");
1.380 www 1509: my $key=$declutter.'_'.$user.'_'.$domain;
1510: my %lastnotified=&Apache::lonnet::get('nohist_xmlerrornotifications',
1511: [$key],
1512: $cdom,$cnum);
1513: my $now=time;
1514: if ($now-$lastnotified{$key}>86400) {
1515: &Apache::lonmsg::user_normal_msg($user,$domain,
1.336 albertel 1516: "Error [$declutter]",join('<br />',@_));
1.380 www 1517: &Apache::lonnet::put('nohist_xmlerrornotifications',
1518: {$key => $now},
1519: $cdom,$cnum);
1520: }
1.336 albertel 1521: }
1.372 albertel 1522: if ($env{'request.role.adv'}) {
1.336 albertel 1523: $errormsg=&mt("An error occured while processing this resource. The course personnel ([_1]) and the author have been notified.",join(', ',@userlist));
1524: } else {
1525: $errormsg=&mt("An error occured while processing this resource. The instructor has been notified.");
1526: }
1527: }
1528: push(@Apache::lonxml::error_messages,"<b>$errormsg</b> <br />");
1.52 albertel 1529: }
1.22 albertel 1530: }
1.49 albertel 1531:
1.22 albertel 1532: sub warning {
1.295 albertel 1533: $warningcount++;
1.261 albertel 1534:
1.372 albertel 1535: if ($env{'form.grade_target'} ne 'tex') {
1.348 albertel 1536: if ( &show_error_warn_msg() ) {
1.309 albertel 1537: push(@Apache::lonxml::warning_messages,
1538: $Apache::lonxml::warnings_error_header.
1539: "<b>W</b>ARNING<b>:</b>".join('<br />',@_)."<br />\n");
1.295 albertel 1540: $Apache::lonxml::warnings_error_header='';
1541: }
1542: }
1.309 albertel 1543: }
1544:
1545: sub info {
1.372 albertel 1546: if ($env{'form.grade_target'} ne 'tex'
1547: && $env{'request.state'} eq 'construct') {
1.309 albertel 1548: push(@Apache::lonxml::info_messages,join('<br />',@_)."<br />\n");
1549: }
1550: }
1551:
1552: sub message_location {
1553: return '__LONCAPA_INTERNAL_MESSAGE_LOCATION__';
1554: }
1555:
1556: sub add_messages {
1557: my ($msg)=@_;
1558: my $result=join(' ',
1559: @Apache::lonxml::info_messages,
1560: @Apache::lonxml::error_messages,
1561: @Apache::lonxml::warning_messages);
1562: undef(@Apache::lonxml::info_messages);
1563: undef(@Apache::lonxml::error_messages);
1564: undef(@Apache::lonxml::warning_messages);
1565: $$msg=~s/__LONCAPA_INTERNAL_MESSAGE_LOCATION__/$result/;
1566: $$msg=~s/__LONCAPA_INTERNAL_MESSAGE_LOCATION__//g;
1.83 albertel 1567: }
1568:
1569: sub get_param {
1.213 albertel 1570: my ($param,$parstack,$safeeval,$context,$case_insensitive) = @_;
1571: if ( ! $context ) { $context = -1; }
1572: my $args ='';
1573: if ( $#$parstack > (-2-$context) ) { $args=$$parstack[$context]; }
1.297 sakharuk 1574: if ( ! $Apache::lonxml::usestyle ) {
1575: $args=$Apache::lonxml::style_values.$args;
1576: }
1.213 albertel 1577: if ( ! $args ) { return undef; }
1578: if ( $case_insensitive ) {
1579: if ($args =~ s/(my \$)(\Q$param\E)(=\")/$1.lc($2).$3/ei) {
1580: return &Apache::run::run("{$args;".'return $'.$param.'}',
1581: $safeeval); #'
1582: } else {
1583: return undef;
1584: }
1585: } else {
1586: if ( $args =~ /my \$\Q$param\E=\"/ ) {
1587: return &Apache::run::run("{$args;".'return $'.$param.'}',
1588: $safeeval); #'
1589: } else {
1590: return undef;
1591: }
1592: }
1.22 albertel 1593: }
1594:
1.132 albertel 1595: sub get_param_var {
1.213 albertel 1596: my ($param,$parstack,$safeeval,$context,$case_insensitive) = @_;
1.132 albertel 1597: if ( ! $context ) { $context = -1; }
1598: my $args ='';
1599: if ( $#$parstack > (-2-$context) ) { $args=$$parstack[$context]; }
1.297 sakharuk 1600: if ( ! $Apache::lonxml::usestyle ) {
1601: $args=$Apache::lonxml::style_values.$args;
1602: }
1.230 albertel 1603: &Apache::lonxml::debug("Args are $args param is $param");
1.213 albertel 1604: if ($case_insensitive) {
1605: if (! ($args=~s/(my \$)(\Q$param\E)(=\")/$1.lc($2).$3/ei)) {
1606: return undef;
1607: }
1608: } elsif ( $args !~ /my \$\Q$param\E=\"/ ) { return undef; }
1.132 albertel 1609: my $value=&Apache::run::run("{$args;".'return $'.$param.'}',$safeeval); #'
1.230 albertel 1610: &Apache::lonxml::debug("first run is $value");
1.341 albertel 1611: if ($value =~ /^[\$\@\%][a-zA-Z_]\w*$/) {
1.230 albertel 1612: &Apache::lonxml::debug("doing second");
1613: my @result=&Apache::run::run("return $value",$safeeval,1);
1614: if (!defined($result[0])) {
1615: return $value
1616: } else {
1617: if (wantarray) { return @result; } else { return $result[0]; }
1618: }
1.132 albertel 1619: } else {
1620: return $value;
1621: }
1622: }
1623:
1.74 albertel 1624: sub register_insert {
1.75 albertel 1625: my @data = split /\n/, &Apache::lonnet::getfile('/home/httpd/lonTabs/insertlist.tab');
1.74 albertel 1626: my $i;
1.76 albertel 1627: my $tagnum=0;
1.74 albertel 1628: my @order;
1629: for ($i=0;$i < $#data; $i++) {
1630: my $line = $data[$i];
1631: if ( $line =~ /^\#/ || $line =~ /^\s*\n/) { next; }
1632: if ( $line =~ /TABLE/ ) { last; }
1.268 bowersj2 1633: my ($tag,$descrip,$color,$function,$show,$helpfile,$helpdesc) = split(/,/, $line);
1.135 albertel 1634: if ($tag) {
1635: $insertlist{"$tagnum.tag"} = $tag;
1636: $insertlist{"$tagnum.description"} = $descrip;
1637: $insertlist{"$tagnum.color"} = $color;
1638: $insertlist{"$tagnum.function"} = $function;
1639: if (!defined($show)) { $show='yes'; }
1640: $insertlist{"$tagnum.show"}= $show;
1.268 bowersj2 1641: $insertlist{"$tagnum.helpfile"} = $helpfile;
1642: $insertlist{"$tagnum.helpdesc"} = $helpdesc;
1.135 albertel 1643: $insertlist{"$tag.num"}=$tagnum;
1644: $tagnum++;
1645: }
1.74 albertel 1646: }
1.76 albertel 1647: $i++; #skipping TABLE line
1648: $tagnum = 0;
1.74 albertel 1649: for (;$i < $#data;$i++) {
1650: my $line = $data[$i];
1.76 albertel 1651: my ($mnemonic,@which) = split(/ +/,$line);
1652: my $tag = $insertlist{"$tagnum.tag"};
1.144 matthew 1653: for (my $j=0;$j <=$#which;$j++) {
1.74 albertel 1654: if ( $which[$j] eq 'Y' ) {
1.76 albertel 1655: if ($insertlist{"$j.show"} ne 'no') {
1656: push(@{ $insertlist{"$tag.which"} },$j);
1657: }
1.74 albertel 1658: }
1659: }
1.76 albertel 1660: $tagnum++;
1.74 albertel 1661: }
1662: }
1.98 albertel 1663:
1664: sub description {
1665: my ($token)=@_;
1.138 albertel 1666: my $tagnum;
1667: my $tag=$token->[1];
1668: foreach my $namespace (reverse @Apache::lonxml::namespace) {
1669: my $testtag=$namespace.'::'.$tag;
1670: $tagnum=$insertlist{"$testtag.num"};
1671: if (defined($tagnum)) { last; }
1672: }
1673: if (!defined ($tagnum)) { $tagnum=$Apache::lonxml::insertlist{"$tag.num"}; }
1674: return $insertlist{$tagnum.'.description'};
1.268 bowersj2 1675: }
1676:
1677: # Returns a list containing the help file, and the description
1678: sub helpinfo {
1679: my ($token)=@_;
1680: my $tagnum;
1681: my $tag=$token->[1];
1682: foreach my $namespace (reverse @Apache::lonxml::namespace) {
1683: my $testtag=$namespace.'::'.$tag;
1684: $tagnum=$insertlist{"$testtag.num"};
1685: if (defined($tagnum)) { last; }
1686: }
1687: if (!defined ($tagnum)) { $tagnum=$Apache::lonxml::insertlist{"$tag.num"}; }
1688: return ($insertlist{$tagnum.'.helpfile'}, $insertlist{$tagnum.'.helpdesc'});
1.98 albertel 1689: }
1.123 albertel 1690:
1691: # ----------------------------------------------------------------- whichuser
1692: # returns a list of $symb, $courseid, $domain, $name that is correct for
1693: # calls to lonnet functions for this setup.
1694: # - looks for form.grade_ parameters
1695: sub whichuser {
1.262 matthew 1696: my ($passedsymb)=@_;
1.245 albertel 1697: my ($symb,$courseid,$domain,$name,$publicuser);
1.372 albertel 1698: if (defined($env{'form.grade_symb'})) {
1.350 albertel 1699: my ($tmp_courseid)=
1700: &Apache::loncommon::get_env_multiple('form.grade_courseid');
1701: my $allowed=&Apache::lonnet::allowed('vgr',$tmp_courseid);
1702: if (!$allowed &&
1.372 albertel 1703: exists($env{'request.course.sec'}) &&
1704: $env{'request.course.sec'} !~ /^\s*$/) {
1.350 albertel 1705: $allowed=&Apache::lonnet::allowed('vgr',$tmp_courseid.
1.372 albertel 1706: '/'.$env{'request.course.sec'});
1.350 albertel 1707: }
1708: if ($allowed) {
1709: ($symb)=&Apache::loncommon::get_env_multiple('form.grade_symb');
1710: $courseid=$tmp_courseid;
1711: ($domain)=&Apache::loncommon::get_env_multiple('form.grade_domain');
1712: ($name)=&Apache::loncommon::get_env_multiple('form.grade_username');
1713: return ($symb,$courseid,$domain,$name,$publicuser);
1714: }
1715: }
1716: if (!$passedsymb) {
1717: $symb=&Apache::lonnet::symbread();
1.134 albertel 1718: } else {
1.350 albertel 1719: $symb=$passedsymb;
1720: }
1.372 albertel 1721: $courseid=$env{'request.course.id'};
1722: $domain=$env{'user.domain'};
1723: $name=$env{'user.name'};
1.350 albertel 1724: if ($name eq 'public' && $domain eq 'public') {
1.372 albertel 1725: if (!defined($env{'form.username'})) {
1726: $env{'form.username'}.=time.rand(10000000);
1.244 albertel 1727: }
1.372 albertel 1728: $name.=$env{'form.username'};
1.123 albertel 1729: }
1.245 albertel 1730: return ($symb,$courseid,$domain,$name,$publicuser);
1.123 albertel 1731: }
1732:
1.1 sakharuk 1733: 1;
1734: __END__
1.68 www 1735:
1736:
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