Annotation of loncom/xml/lonxml.pm, revision 1.384
1.2 sakharuk 1: # The LearningOnline Network with CAPA
1.3 sakharuk 2: # XML Parser Module
1.2 sakharuk 3: #
1.384 ! albertel 4: # $Id: lonxml.pm,v 1.383 2005/09/26 21:39:53 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;
1.101 albertel 421: while ( $#$pars > -1 ) {
422: while ($token = $$pars['-1']->get_token) {
1.261 albertel 423: if (($token->[0] eq 'T') || ($token->[0] eq 'C') ) {
1.101 albertel 424: if ($metamode<1) {
1.190 albertel 425: my $text=$token->[1];
1.193 albertel 426: if ($token->[0] eq 'C' && $target eq 'tex') {
1.239 sakharuk 427: $text = '';
428: # $text = '%'.$text."\n";
1.182 sakharuk 429: }
1.190 albertel 430: $result.=$text;
1.101 albertel 431: }
1.261 albertel 432: } elsif (($token->[0] eq 'D')) {
433: if ($metamode<1 && $target eq 'web') {
434: my $text=$token->[1];
435: $result.=$text;
436: }
1.101 albertel 437: } elsif ($token->[0] eq 'PI') {
1.261 albertel 438: if ($metamode<1 && $target eq 'web') {
1.101 albertel 439: $result=$token->[2];
440: }
441: } elsif ($token->[0] eq 'S') {
1.140 albertel 442: # add tag to stack
1.101 albertel 443: push (@$stack,$token->[1]);
444: # add parameters list to another stack
445: push (@$parstack,&parstring($token));
1.140 albertel 446: &increasedepth($token);
1.212 albertel 447: if ($Apache::lonxml::usestyle &&
448: exists($$style_for_target{$token->[1]})) {
449: $Apache::lonxml::usestyle=0;
450: my $string=$$style_for_target{$token->[1]}.
451: '<LONCAPA_INTERNAL_TURN_STYLE_ON />';
452: &Apache::lonxml::newparser($pars,\$string);
1.257 albertel 453: $Apache::lonxml::style_values=$$parstack[-1];
1.259 albertel 454: $Apache::lonxml::style_end_values=$$parstack[-1];
1.101 albertel 455: } else {
456: $result = &callsub("start_$token->[1]", $target, $token, $stack,
457: $parstack, $pars, $safeeval, $style_for_target);
1.140 albertel 458: }
1.101 albertel 459: } elsif ($token->[0] eq 'E') {
1.212 albertel 460: if ($Apache::lonxml::usestyle &&
461: exists($$style_for_target{'/'."$token->[1]"})) {
462: $Apache::lonxml::usestyle=0;
463: my $string=$$style_for_target{'/'.$token->[1]}.
1.258 albertel 464: '<LONCAPA_INTERNAL_TURN_STYLE_ON end="'.$token->[1].'" />';
1.212 albertel 465: &Apache::lonxml::newparser($pars,\$string);
1.259 albertel 466: $Apache::lonxml::style_values=$Apache::lonxml::style_end_values;
467: $Apache::lonxml::style_end_values='';
1.258 albertel 468: $dontpop=1;
1.101 albertel 469: } else {
1.258 albertel 470: #clear out any tags that didn't end
471: while ($token->[1] ne $$stack['-1'] && ($#$stack > -1)) {
472: my $lasttag=$$stack[-1];
1.317 albertel 473: if ($token->[1] =~ /^\Q$lasttag\E$/i) {
1.258 albertel 474: &Apache::lonxml::warning('Using tag </'.$token->[1].'> on line '.$token->[3].' as end tag to <'.$$stack[-1].'>');
475: last;
476: } else {
477: &Apache::lonxml::warning('Found tag </'.$token->[1].'> on line '.$token->[3].' when looking for </'.$$stack[-1].'> in file');
478: &end_tag($stack,$parstack,$token);
479: }
480: }
481: $result = &callsub("end_$token->[1]", $target, $token, $stack,
482: $parstack, $pars,$safeeval, $style_for_target);
1.101 albertel 483: }
484: } else {
485: &Apache::lonxml::error("Unknown token event :$token->[0]:$token->[1]:");
486: }
487: #evaluate variable refs in result
1.282 albertel 488: if ($Apache::lonxml::post_evaluate &&$result ne "") {
1.257 albertel 489: my $extras;
490: if (!$Apache::lonxml::usestyle) {
491: $extras=$Apache::lonxml::style_values;
492: }
1.101 albertel 493: if ( $#$parstack > -1 ) {
1.257 albertel 494: $result=&Apache::run::evaluate($result,$safeeval,$extras.$$parstack[-1]);
1.101 albertel 495: } else {
1.257 albertel 496: $result= &Apache::run::evaluate($result,$safeeval,$extras);
1.101 albertel 497: }
1.163 albertel 498: }
1.282 albertel 499: $Apache::lonxml::post_evaluate=1;
500:
1.190 albertel 501: if (($token->[0] eq 'T') || ($token->[0] eq 'C') || ($token->[0] eq 'D') ) {
1.249 albertel 502: #Style file definitions should be correct
1.250 albertel 503: if ($target eq 'tex' && ($Apache::lonxml::usestyle)) {
1.311 albertel 504: $result=&latex_special_symbols($result);
1.249 albertel 505: }
1.190 albertel 506: }
507:
1.169 albertel 508: if ($Apache::lonxml::redirection) {
509: $Apache::lonxml::outputstack['-1'] .= $result;
510: } else {
511: $finaloutput.=$result;
512: }
513: $result = '';
514:
1.258 albertel 515: if ($token->[0] eq 'E' && !$dontpop) {
1.101 albertel 516: &end_tag($stack,$parstack,$token);
517: }
1.258 albertel 518: $dontpop=0;
1.224 albertel 519: }
1.212 albertel 520: if ($#$pars > -1) {
521: pop @$pars;
522: pop @Apache::lonxml::pwd;
523: }
1.101 albertel 524: }
525:
526: # if ($target eq 'meta') {
527: # $finaloutput.=&endredirection;
528: # }
529:
1.169 albertel 530:
1.101 albertel 531: if (($ENV{'QUERY_STRING'}) && ($target eq 'web')) {
532: $finaloutput=&afterburn($finaloutput);
1.216 sakharuk 533: }
1.101 albertel 534: return $finaloutput;
535: }
1.67 www 536:
1.318 matthew 537: ##
538: ## Looks to see if there is a subroutine defined for this tag. If so, call it,
539: ## otherwise do not call it as we do not know what it is.
540: ##
1.7 albertel 541: sub callsub {
1.84 albertel 542: my ($sub,$target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.7 albertel 543: my $currentstring='';
1.72 albertel 544: my $nodefault;
1.7 albertel 545: {
1.59 albertel 546: my $sub1;
1.7 albertel 547: no strict 'refs';
1.68 www 548: my $tag=$token->[1];
1.236 www 549: # get utterly rid of extended html tags
550: if ($tag=~/^x\-/i) { return ''; }
1.141 albertel 551: my $space=$Apache::lonxml::alltags{$tag}[-1];
1.68 www 552: if (!$space) {
1.141 albertel 553: $tag=~tr/A-Z/a-z/;
1.68 www 554: $sub=~tr/A-Z/a-z/;
1.141 albertel 555: $space=$Apache::lonxml::alltags{$tag}[-1]
1.68 www 556: }
1.97 albertel 557:
558: my $deleted=0;
559: $Apache::lonxml::curdepth=join('_',@Apache::lonxml::depthcounter);
560: if (($token->[0] eq 'S') && ($target eq 'modified')) {
561: $deleted=&Apache::edit::handle_delete($space,$target,$token,$tagstack,
562: $parstack,$parser,$safeeval,
563: $style);
564: }
565: if (!$deleted) {
566: if ($space) {
1.220 albertel 567: #&Apache::lonxml::debug("Calling sub $sub in $space $metamode");
1.97 albertel 568: $sub1="$space\:\:$sub";
569: ($currentstring,$nodefault) = &$sub1($target,$token,$tagstack,
570: $parstack,$parser,$safeeval,
571: $style);
572: } else {
1.318 matthew 573: if ($target eq 'tex') {
574: # throw away tag name
575: return '';
576: }
1.220 albertel 577: #&Apache::lonxml::debug("NOT Calling sub $sub in $space $metamode");
1.97 albertel 578: if ($metamode <1) {
579: if (defined($token->[4]) && ($metamode < 1)) {
580: $currentstring = $token->[4];
581: } else {
582: $currentstring = $token->[2];
583: }
1.62 sakharuk 584: }
1.7 albertel 585: }
1.97 albertel 586: # &Apache::lonxml::debug("nodefalt:$nodefault:");
587: if ($currentstring eq '' && $nodefault eq '') {
588: if ($target eq 'edit') {
1.220 albertel 589: #&Apache::lonxml::debug("doing default edit for $token->[1]");
1.97 albertel 590: if ($token->[0] eq 'S') {
591: $currentstring = &Apache::edit::tag_start($target,$token);
592: } elsif ($token->[0] eq 'E') {
593: $currentstring = &Apache::edit::tag_end($target,$token);
594: }
595: } elsif ($target eq 'modified') {
596: if ($token->[0] eq 'S') {
597: $currentstring = $token->[4];
598: $currentstring.=&Apache::edit::handle_insert();
1.210 www 599: } elsif ($token->[0] eq 'E') {
600: $currentstring = $token->[2];
601: $currentstring.=&Apache::edit::handle_insertafter($token->[1]);
1.97 albertel 602: } else {
603: $currentstring = $token->[2];
604: }
1.72 albertel 605: }
606: }
1.7 albertel 607: }
608: use strict 'refs';
609: }
610: return $currentstring;
1.82 ng 611: }
612:
1.96 albertel 613: sub setup_globals {
1.172 albertel 614: my ($request,$target)=@_;
615: $Apache::lonxml::request=$request;
1.99 albertel 616: $Apache::lonxml::registered = 0;
1.325 www 617: @Apache::lonxml::htmlareafields=();
1.205 www 618: $errorcount=0;
619: $warningcount=0;
1.207 albertel 620: $Apache::lonxml::default_homework_loaded=0;
1.212 albertel 621: $Apache::lonxml::usestyle=1;
1.204 albertel 622: &init_counter();
1.101 albertel 623: @Apache::lonxml::pwd=();
1.124 albertel 624: @Apache::lonxml::extlinks=();
1.281 albertel 625: @Apache::lonxml::ssi_info=();
1.282 albertel 626: $Apache::lonxml::post_evaluate=1;
1.295 albertel 627: $Apache::lonxml::warnings_error_header='';
1.96 albertel 628: if ($target eq 'meta') {
629: $Apache::lonxml::redirection = 0;
630: $Apache::lonxml::metamode = 1;
631: $Apache::lonxml::evaluate = 1;
632: $Apache::lonxml::import = 0;
1.129 albertel 633: } elsif ($target eq 'answer') {
634: $Apache::lonxml::redirection = 0;
635: $Apache::lonxml::metamode = 1;
636: $Apache::lonxml::evaluate = 1;
637: $Apache::lonxml::import = 1;
1.96 albertel 638: } elsif ($target eq 'grade') {
639: &startredirection;
640: $Apache::lonxml::metamode = 0;
641: $Apache::lonxml::evaluate = 1;
642: $Apache::lonxml::import = 1;
643: } elsif ($target eq 'modified') {
644: $Apache::lonxml::redirection = 0;
645: $Apache::lonxml::metamode = 0;
646: $Apache::lonxml::evaluate = 0;
647: $Apache::lonxml::import = 0;
648: } elsif ($target eq 'edit') {
649: $Apache::lonxml::redirection = 0;
650: $Apache::lonxml::metamode = 0;
651: $Apache::lonxml::evaluate = 0;
652: $Apache::lonxml::import = 0;
1.163 albertel 653: } elsif ($target eq 'analyze') {
654: $Apache::lonxml::redirection = 0;
655: $Apache::lonxml::metamode = 0;
656: $Apache::lonxml::evaluate = 1;
657: $Apache::lonxml::import = 1;
1.96 albertel 658: } else {
659: $Apache::lonxml::redirection = 0;
660: $Apache::lonxml::metamode = 0;
661: $Apache::lonxml::evaluate = 1;
662: $Apache::lonxml::import = 1;
663: }
664: }
665:
1.82 ng 666: sub init_safespace {
667: my ($target,$safeeval,$safehole,$safeinit) = @_;
1.383 albertel 668: $safeeval->deny_only(':dangerous');
669: $safeeval->reval('use Math::Complex;');
670: $safeeval->permit_only(":default");
1.82 ng 671: $safeeval->permit("entereval");
672: $safeeval->permit(":base_math");
673: $safeeval->permit("sort");
1.286 albertel 674: $safeeval->permit("time");
1.371 albertel 675: $safeeval->deny("rand");
676: $safeeval->deny("srand");
1.82 ng 677: $safeeval->deny(":base_io");
1.102 albertel 678: $safehole->wrap(\&Apache::scripttag::xmlparse,$safeeval,'&xmlparse');
1.251 albertel 679: $safehole->wrap(\&Apache::outputtags::multipart,$safeeval,'&multipart');
1.82 ng 680: $safehole->wrap(\&Apache::lonnet::EXT,$safeeval,'&EXT');
1.324 albertel 681: $safehole->wrap(\&Apache::chemresponse::chem_standard_order,$safeeval,
682: '&chem_standard_order');
1.369 albertel 683: $safehole->wrap(\&Apache::response::check_status,$safeeval,'&check_status');
1.324 albertel 684:
1.82 ng 685: $safehole->wrap(\&Math::Cephes::asin,$safeeval,'&asin');
686: $safehole->wrap(\&Math::Cephes::acos,$safeeval,'&acos');
687: $safehole->wrap(\&Math::Cephes::atan,$safeeval,'&atan');
688: $safehole->wrap(\&Math::Cephes::sinh,$safeeval,'&sinh');
689: $safehole->wrap(\&Math::Cephes::cosh,$safeeval,'&cosh');
690: $safehole->wrap(\&Math::Cephes::tanh,$safeeval,'&tanh');
691: $safehole->wrap(\&Math::Cephes::asinh,$safeeval,'&asinh');
692: $safehole->wrap(\&Math::Cephes::acosh,$safeeval,'&acosh');
693: $safehole->wrap(\&Math::Cephes::atanh,$safeeval,'&atanh');
694: $safehole->wrap(\&Math::Cephes::erf,$safeeval,'&erf');
695: $safehole->wrap(\&Math::Cephes::erfc,$safeeval,'&erfc');
696: $safehole->wrap(\&Math::Cephes::j0,$safeeval,'&j0');
697: $safehole->wrap(\&Math::Cephes::j1,$safeeval,'&j1');
698: $safehole->wrap(\&Math::Cephes::jn,$safeeval,'&jn');
699: $safehole->wrap(\&Math::Cephes::jv,$safeeval,'&jv');
700: $safehole->wrap(\&Math::Cephes::y0,$safeeval,'&y0');
701: $safehole->wrap(\&Math::Cephes::y1,$safeeval,'&y1');
702: $safehole->wrap(\&Math::Cephes::yn,$safeeval,'&yn');
703: $safehole->wrap(\&Math::Cephes::yv,$safeeval,'&yv');
1.215 albertel 704:
705: $safehole->wrap(\&Math::Cephes::bdtr ,$safeeval,'&bdtr' );
706: $safehole->wrap(\&Math::Cephes::bdtrc ,$safeeval,'&bdtrc' );
707: $safehole->wrap(\&Math::Cephes::bdtri ,$safeeval,'&bdtri' );
708: $safehole->wrap(\&Math::Cephes::btdtr ,$safeeval,'&btdtr' );
709: $safehole->wrap(\&Math::Cephes::chdtr ,$safeeval,'&chdtr' );
710: $safehole->wrap(\&Math::Cephes::chdtrc,$safeeval,'&chdtrc');
711: $safehole->wrap(\&Math::Cephes::chdtri,$safeeval,'&chdtri');
712: $safehole->wrap(\&Math::Cephes::fdtr ,$safeeval,'&fdtr' );
713: $safehole->wrap(\&Math::Cephes::fdtrc ,$safeeval,'&fdtrc' );
714: $safehole->wrap(\&Math::Cephes::fdtri ,$safeeval,'&fdtri' );
715: $safehole->wrap(\&Math::Cephes::gdtr ,$safeeval,'&gdtr' );
716: $safehole->wrap(\&Math::Cephes::gdtrc ,$safeeval,'&gdtrc' );
717: $safehole->wrap(\&Math::Cephes::nbdtr ,$safeeval,'&nbdtr' );
718: $safehole->wrap(\&Math::Cephes::nbdtrc,$safeeval,'&nbdtrc');
719: $safehole->wrap(\&Math::Cephes::nbdtri,$safeeval,'&nbdtri');
720: $safehole->wrap(\&Math::Cephes::ndtr ,$safeeval,'&ndtr' );
721: $safehole->wrap(\&Math::Cephes::ndtri ,$safeeval,'&ndtri' );
722: $safehole->wrap(\&Math::Cephes::pdtr ,$safeeval,'&pdtr' );
723: $safehole->wrap(\&Math::Cephes::pdtrc ,$safeeval,'&pdtrc' );
724: $safehole->wrap(\&Math::Cephes::pdtri ,$safeeval,'&pdtri' );
725: $safehole->wrap(\&Math::Cephes::stdtr ,$safeeval,'&stdtr' );
726: $safehole->wrap(\&Math::Cephes::stdtri,$safeeval,'&stdtri');
727:
1.383 albertel 728: $safehole->wrap(\&Math::Cephes::Matrix::mat,$safeeval,'&mat');
729: $safehole->wrap(\&Math::Cephes::Matrix::new,$safeeval,
730: '&Math::Cephes::Matrix::new');
731: $safehole->wrap(\&Math::Cephes::Matrix::coef,$safeeval,
732: '&Math::Cephes::Matrix::coef');
733: $safehole->wrap(\&Math::Cephes::Matrix::clr,$safeeval,
734: '&Math::Cephes::Matrix::clr');
735: $safehole->wrap(\&Math::Cephes::Matrix::add,$safeeval,
736: '&Math::Cephes::Matrix::add');
737: $safehole->wrap(\&Math::Cephes::Matrix::sub,$safeeval,
738: '&Math::Cephes::Matrix::sub');
739: $safehole->wrap(\&Math::Cephes::Matrix::mul,$safeeval,
740: '&Math::Cephes::Matrix::mul');
741: $safehole->wrap(\&Math::Cephes::Matrix::div,$safeeval,
742: '&Math::Cephes::Matrix::div');
743: $safehole->wrap(\&Math::Cephes::Matrix::inv,$safeeval,
744: '&Math::Cephes::Matrix::inv');
745: $safehole->wrap(\&Math::Cephes::Matrix::transp,$safeeval,
746: '&Math::Cephes::Matrix::transp');
747: $safehole->wrap(\&Math::Cephes::Matrix::simq,$safeeval,
748: '&Math::Cephes::Matrix::simq');
749: $safehole->wrap(\&Math::Cephes::Matrix::mat_to_vec,$safeeval,
750: '&Math::Cephes::Matrix::mat_to_vec');
751: $safehole->wrap(\&Math::Cephes::Matrix::vec_to_mat,$safeeval,
752: '&Math::Cephes::Matrix::vec_to_mat');
753: $safehole->wrap(\&Math::Cephes::Matrix::check,$safeeval,
754: '&Math::Cephes::Matrix::check');
755: $safehole->wrap(\&Math::Cephes::Matrix::check,$safeeval,
756: '&Math::Cephes::Matrix::check');
757:
1.215 albertel 758: # $safehole->wrap(\&Math::Cephes::new_fract,$safeeval,'&new_fract');
759: # $safehole->wrap(\&Math::Cephes::radd,$safeeval,'&radd');
760: # $safehole->wrap(\&Math::Cephes::rsub,$safeeval,'&rsub');
761: # $safehole->wrap(\&Math::Cephes::rmul,$safeeval,'&rmul');
762: # $safehole->wrap(\&Math::Cephes::rdiv,$safeeval,'&rdiv');
763: # $safehole->wrap(\&Math::Cephes::euclid,$safeeval,'&euclid');
764:
1.91 ng 765: $safehole->wrap(\&Math::Random::random_beta,$safeeval,'&math_random_beta');
766: $safehole->wrap(\&Math::Random::random_chi_square,$safeeval,'&math_random_chi_square');
767: $safehole->wrap(\&Math::Random::random_exponential,$safeeval,'&math_random_exponential');
768: $safehole->wrap(\&Math::Random::random_f,$safeeval,'&math_random_f');
769: $safehole->wrap(\&Math::Random::random_gamma,$safeeval,'&math_random_gamma');
770: $safehole->wrap(\&Math::Random::random_multivariate_normal,$safeeval,'&math_random_multivariate_normal');
771: $safehole->wrap(\&Math::Random::random_multinomial,$safeeval,'&math_random_multinomial');
772: $safehole->wrap(\&Math::Random::random_noncentral_chi_square,$safeeval,'&math_random_noncentral_chi_square');
773: $safehole->wrap(\&Math::Random::random_noncentral_f,$safeeval,'&math_random_noncentral_f');
774: $safehole->wrap(\&Math::Random::random_normal,$safeeval,'&math_random_normal');
775: $safehole->wrap(\&Math::Random::random_permutation,$safeeval,'&math_random_permutation');
1.93 ng 776: $safehole->wrap(\&Math::Random::random_permuted_index,$safeeval,'&math_random_permuted_index');
1.91 ng 777: $safehole->wrap(\&Math::Random::random_uniform,$safeeval,'&math_random_uniform');
778: $safehole->wrap(\&Math::Random::random_poisson,$safeeval,'&math_random_poisson');
779: $safehole->wrap(\&Math::Random::random_uniform_integer,$safeeval,'&math_random_uniform_integer');
780: $safehole->wrap(\&Math::Random::random_negative_binomial,$safeeval,'&math_random_negative_binomial');
781: $safehole->wrap(\&Math::Random::random_binomial,$safeeval,'&math_random_binomial');
782: $safehole->wrap(\&Math::Random::random_seed_from_phrase,$safeeval,'&random_seed_from_phrase');
783: $safehole->wrap(\&Math::Random::random_set_seed_from_phrase,$safeeval,'&random_set_seed_from_phrase');
784: $safehole->wrap(\&Math::Random::random_get_seed,$safeeval,'&random_get_seed');
785: $safehole->wrap(\&Math::Random::random_set_seed,$safeeval,'&random_set_seed');
1.305 albertel 786: $safehole->wrap(\&Apache::lonxml::error,$safeeval,'&LONCAPA_INTERNAL_ERROR');
1.311 albertel 787: $safehole->wrap(\&Apache::lonxml::debug,$safeeval,'&LONCAPA_INTERNAL_DEBUG');
1.322 albertel 788: $safehole->wrap(\&Apache::caparesponse::get_sigrange,$safeeval,'&LONCAPA_INTERNAL_get_sigrange');
1.91 ng 789:
1.82 ng 790: #need to inspect this class of ops
791: # $safeeval->deny(":base_orig");
1.331 albertel 792: $safeeval->permit("require");
1.91 ng 793: $safeinit .= ';$external::target="'.$target.'";';
1.82 ng 794: &Apache::run::run($safeinit,$safeeval);
1.373 albertel 795: &initialize_rndseed($safeeval);
796: }
1.303 albertel 797:
1.373 albertel 798: sub initialize_rndseed {
799: my ($safeeval)=@_;
800: my $rndseed;
801: my ($symb,$courseid,$domain,$name) = &Apache::lonxml::whichuser();
802: $rndseed=&Apache::lonnet::rndseed($symb,$courseid,$domain,$name);
803: my $safeinit = '$external::randomseed="'.$rndseed.'";';
804: &Apache::lonxml::debug("Setting rndseed to $rndseed");
805: &Apache::run::run($safeinit,$safeeval);
1.207 albertel 806: }
807:
808: sub default_homework_load {
809: my ($safeeval)=@_;
810: &Apache::lonxml::debug('Loading default_homework');
811: my $default=&Apache::lonnet::getfile('/home/httpd/html/res/adm/includes/default_homework.lcpm');
1.241 albertel 812: if ($default eq -1) {
1.207 albertel 813: &Apache::lonxml::error("<b>Unable to find <i>default_homework.lcpm</i></b>");
814: } else {
815: &Apache::run::run($default,$safeeval);
816: $Apache::lonxml::default_homework_loaded=1;
817: }
1.17 albertel 818: }
819:
1.358 albertel 820: {
821: my $alarm_depth;
822: sub init_alarm {
823: alarm(0);
824: $alarm_depth=0;
825: }
826:
827: sub start_alarm {
828: if ($alarm_depth<1) {
829: my $old=alarm($Apache::lonnet::perlvar{'lonScriptTimeout'});
830: if ($old) {
831: &Apache::lonxml::error("Cancelled an alarm of $old, this shouldn't occur.");
832: }
833: }
834: $alarm_depth++;
835: }
836:
837: sub end_alarm {
838: $alarm_depth--;
839: if ($alarm_depth<1) { alarm(0); }
840: }
841: }
1.328 albertel 842: my $metamode_was;
1.55 albertel 843: sub startredirection {
1.328 albertel 844: if (!$Apache::lonxml::redirection) {
845: $metamode_was=$Apache::lonxml::metamode;
846: }
847: $Apache::lonxml::metamode=0;
848: $Apache::lonxml::redirection++;
849: push (@Apache::lonxml::outputstack, '');
1.55 albertel 850: }
851:
852: sub endredirection {
1.328 albertel 853: if (!$Apache::lonxml::redirection) {
1.380 www 854: &Apache::lonxml::error("Endredirection was called before a startredirection, perhaps you have unbalanced tags. Some debugging information:".join ":",caller);
1.328 albertel 855: return '';
856: }
857: $Apache::lonxml::redirection--;
858: if (!$Apache::lonxml::redirection) {
859: $Apache::lonxml::metamode=$metamode_was;
860: }
861: pop @Apache::lonxml::outputstack;
1.97 albertel 862: }
863:
864: sub end_tag {
865: my ($tagstack,$parstack,$token)=@_;
866: pop(@$tagstack);
867: pop(@$parstack);
868: &decreasedepth($token);
1.55 albertel 869: }
870:
1.17 albertel 871: sub initdepth {
872: @Apache::lonxml::depthcounter=();
873: $Apache::lonxml::depth=-1;
874: $Apache::lonxml::olddepth=-1;
875: }
876:
1.339 albertel 877: my @timers;
878: my $lasttime;
1.17 albertel 879: sub increasedepth {
1.19 albertel 880: my ($token) = @_;
1.17 albertel 881: $Apache::lonxml::depth++;
882: $Apache::lonxml::depthcounter[$Apache::lonxml::depth]++;
883: if ($Apache::lonxml::depthcounter[$Apache::lonxml::depth]==1) {
884: $Apache::lonxml::olddepth=$Apache::lonxml::depth;
885: }
1.340 albertel 886: my $time;
887: if ($Apache::lonxml::debug eq "1") {
888: push(@timers,[&gettimeofday()]);
889: $time=&tv_interval($lasttime);
890: $lasttime=[&gettimeofday()];
891: }
1.339 albertel 892: my $spacing=' 'x($Apache::lonxml::depth-1);
1.42 albertel 893: my $curdepth=join('_',@Apache::lonxml::depthcounter);
1.339 albertel 894: &Apache::lonxml::debug("s$spacing$Apache::lonxml::depth : $Apache::lonxml::olddepth : $curdepth : $token->[1] : $time : \n");
1.54 albertel 895: #print "<br />s $Apache::lonxml::depth : $Apache::lonxml::olddepth : $curdepth : $token->[1]\n";
1.17 albertel 896: }
897:
898: sub decreasedepth {
1.19 albertel 899: my ($token) = @_;
1.17 albertel 900: $Apache::lonxml::depth--;
1.36 albertel 901: if ($Apache::lonxml::depth<$Apache::lonxml::olddepth-1) {
902: $#Apache::lonxml::depthcounter--;
903: $Apache::lonxml::olddepth=$Apache::lonxml::depth+1;
904: }
1.43 albertel 905: if ( $Apache::lonxml::depth < -1) {
1.280 www 906: &Apache::lonxml::warning(&mt("Missing tags, unable to properly run file."));
1.43 albertel 907: $Apache::lonxml::depth='-1';
908: }
1.340 albertel 909: my ($timer,$time);
910: if ($Apache::lonxml::debug eq "1") {
911: $timer=pop(@timers);
912: $time=&tv_interval($lasttime);
913: $lasttime=[&gettimeofday()];
914: }
1.339 albertel 915: my $spacing=' 'x$Apache::lonxml::depth;
1.42 albertel 916: my $curdepth=join('_',@Apache::lonxml::depthcounter);
1.339 albertel 917: &Apache::lonxml::debug("e$spacing$Apache::lonxml::depth : $Apache::lonxml::olddepth : $curdepth : $token->[1] : $time : ".&tv_interval($timer)."\n");
1.54 albertel 918: #print "<br />e $Apache::lonxml::depth : $Apache::lonxml::olddepth : $token->[1] : $curdepth\n";
1.1 sakharuk 919: }
1.19 albertel 920:
1.180 albertel 921: sub get_all_text_unbalanced {
1.190 albertel 922: #there is a copy of this in lonpublisher.pm
1.326 albertel 923: my($tag,$pars)= @_;
924: my $token;
925: my $result='';
926: $tag='<'.$tag.'>';
927: while ($token = $$pars[-1]->get_token) {
928: if (($token->[0] eq 'T')||($token->[0] eq 'C')||($token->[0] eq 'D')) {
1.382 albertel 929: if ($token->[2]) {
930: $result.='<![CDATA['.$token->[1].']]>';
931: } else {
932: $result.=$token->[1];
933: }
1.326 albertel 934: } elsif ($token->[0] eq 'PI') {
935: $result.=$token->[2];
936: } elsif ($token->[0] eq 'S') {
937: $result.=$token->[4];
938: } elsif ($token->[0] eq 'E') {
939: $result.=$token->[2];
940: }
941: if ($result =~ /\Q$tag\E/is) {
942: ($result,my $redo)=$result =~ /(.*)\Q$tag\E(.*)/is;
943: #&Apache::lonxml::debug('Got a winner with leftovers ::'.$2);
944: #&Apache::lonxml::debug('Result is :'.$1);
945: $redo=$tag.$redo;
946: &Apache::lonxml::newparser($pars,\$redo);
947: last;
948: }
949: }
950: return $result
1.204 albertel 951: }
952:
953: sub increment_counter {
1.247 albertel 954: my ($increment) = @_;
1.289 sakharuk 955: if (defined($increment) && $increment gt 0) {
956: $Apache::lonxml::counter+=$increment;
957: } else {
958: $Apache::lonxml::counter++;
1.247 albertel 959: }
1.289 sakharuk 960: $Apache::lonxml::counter_changed=1;
1.204 albertel 961: }
962:
963: sub init_counter {
1.372 albertel 964: if (defined($env{'form.counter'})) {
965: $Apache::lonxml::counter=$env{'form.counter'};
1.247 albertel 966: $Apache::lonxml::counter_changed=0;
1.237 sakharuk 967: } else {
1.204 albertel 968: $Apache::lonxml::counter=1;
1.247 albertel 969: $Apache::lonxml::counter_changed=1;
1.204 albertel 970: }
971: }
972:
973: sub store_counter {
974: &Apache::lonnet::appenv(('form.counter' => $Apache::lonxml::counter));
975: return '';
1.180 albertel 976: }
977:
1.19 albertel 978: sub get_all_text {
1.270 albertel 979: my($tag,$pars,$style)= @_;
980: my $gotfullstack=1;
981: if (ref($pars) ne 'ARRAY') {
982: $gotfullstack=0;
983: $pars=[$pars];
984: }
985: if (ref($style) ne 'HASH') {
986: $style={};
987: }
988: my $depth=0;
989: my $token;
990: my $result='';
991: if ( $tag =~ m:^/: ) {
992: my $tag=substr($tag,1);
993: #&Apache::lonxml::debug("have:$tag:");
994: my $top_empty=0;
995: while (($depth >=0) && ($#$pars > -1) && (!$top_empty)) {
996: while (($depth >=0) && ($token = $$pars[-1]->get_token)) {
997: #&Apache::lonxml::debug("e token:$token->[0]:$depth:$token->[1]:".$#$pars.":".$#Apache::lonxml::pwd);
998: if (($token->[0] eq 'T')||($token->[0] eq 'C')||($token->[0] eq 'D')) {
1.382 albertel 999: if ($token->[2]) {
1000: $result.='<![CDATA['.$token->[1].']]>';
1001: } else {
1002: $result.=$token->[1];
1003: }
1.270 albertel 1004: } elsif ($token->[0] eq 'PI') {
1005: $result.=$token->[2];
1006: } elsif ($token->[0] eq 'S') {
1.316 albertel 1007: if ($token->[1] =~ /^\Q$tag\E$/i) { $depth++; }
1008: if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_ON$/) { $Apache::lonxml::usestyle=1; }
1009: if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_OFF$/) { $Apache::lonxml::usestyle=0; }
1.270 albertel 1010: $result.=$token->[4];
1011: } elsif ($token->[0] eq 'E') {
1.316 albertel 1012: if ( $token->[1] =~ /^\Q$tag\E$/i) { $depth--; }
1.270 albertel 1013: #skip sending back the last end tag
1.283 albertel 1014: if ($depth == 0 && exists($$style{'/'.$token->[1]}) && $Apache::lonxml::usestyle) {
1.270 albertel 1015: my $string=
1016: '<LONCAPA_INTERNAL_TURN_STYLE_OFF end="yes" />'.
1017: $$style{'/'.$token->[1]}.
1018: $token->[2].
1019: '<LONCAPA_INTERNAL_TURN_STYLE_ON />';
1020: &Apache::lonxml::newparser($pars,\$string);
1021: #&Apache::lonxml::debug("reParsing $string");
1022: next;
1023: }
1024: if ($depth > -1) {
1025: $result.=$token->[2];
1026: } else {
1027: $$pars[-1]->unget_token($token);
1028: }
1029: }
1030: }
1031: if (($depth >=0) && ($#$pars == 0) ) { $top_empty=1; }
1032: if (($depth >=0) && ($#$pars > 0) ) {
1033: pop(@$pars);
1034: pop(@Apache::lonxml::pwd);
1035: }
1036: }
1037: if ($top_empty && $depth >= 0) {
1038: #never found the end tag ran out of text, throw error send back blank
1039: &error('Never found end tag for <'.$tag.
1040: '> current string <pre>'.
1.314 albertel 1041: &HTML::Entities::encode($result,'<>&"').
1.270 albertel 1042: '</pre>');
1043: if ($gotfullstack) {
1044: my $newstring='</'.$tag.'>'.$result;
1045: &Apache::lonxml::newparser($pars,\$newstring);
1046: }
1047: $result='';
1048: }
1049: } else {
1050: while ($#$pars > -1) {
1051: while ($token = $$pars[-1]->get_token) {
1052: #&Apache::lonxml::debug("s token:$token->[0]:$depth:$token->[1]");
1053: if (($token->[0] eq 'T')||($token->[0] eq 'C')||
1054: ($token->[0] eq 'D')) {
1.382 albertel 1055: if ($token->[2]) {
1056: $result.='<![CDATA['.$token->[1].']]>';
1057: } else {
1058: $result.=$token->[1];
1059: }
1.270 albertel 1060: } elsif ($token->[0] eq 'PI') {
1061: $result.=$token->[2];
1062: } elsif ($token->[0] eq 'S') {
1.316 albertel 1063: if ( $token->[1] =~ /^\Q$tag\E$/i) {
1.270 albertel 1064: $$pars[-1]->unget_token($token); last;
1065: } else {
1066: $result.=$token->[4];
1067: }
1.316 albertel 1068: if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_ON$/) { $Apache::lonxml::usestyle=1; }
1069: if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_OFF$/) { $Apache::lonxml::usestyle=0; }
1.270 albertel 1070: } elsif ($token->[0] eq 'E') {
1071: $result.=$token->[2];
1072: }
1073: }
1074: if (($#$pars > 0) ) {
1075: pop(@$pars);
1076: pop(@Apache::lonxml::pwd);
1077: } else { last; }
1078: }
1079: }
1080: #&Apache::lonxml::debug("Exit:$result:");
1081: return $result
1.19 albertel 1082: }
1083:
1.23 albertel 1084: sub newparser {
1085: my ($parser,$contentref,$dir) = @_;
1.167 albertel 1086: push (@$parser,HTML::LCParser->new($contentref));
1.365 albertel 1087: $$parser[-1]->xml_mode(1);
1088: $$parser[-1]->marked_sections(1);
1.23 albertel 1089: if ( $dir eq '' ) {
1090: push (@Apache::lonxml::pwd, $Apache::lonxml::pwd[$#Apache::lonxml::pwd]);
1091: } else {
1092: push (@Apache::lonxml::pwd, $dir);
1093: }
1094: }
1.1 sakharuk 1095:
1.8 albertel 1096: sub parstring {
1097: my ($token) = @_;
1098: my $temp='';
1.142 albertel 1099: foreach (@{$token->[3]}) {
1.35 www 1100: unless ($_=~/\W/) {
1.42 albertel 1101: my $val=$token->[2]->{$_};
1.231 albertel 1102: $val =~ s/([\%\@\\\"\'])/\\$1/g;
1.342 albertel 1103: $val =~ s/(\$[^{a-zA-Z_])/\\$1/g;
1.346 albertel 1104: $val =~ s/(\$)$/\\$1/;
1.51 albertel 1105: #if ($val =~ m/^[\%\@]/) { $val="\\".$val; }
1.267 sakharuk 1106: $temp .= "my \$$_=\"$val\";";
1.20 albertel 1107: }
1.142 albertel 1108: }
1.8 albertel 1109: return $temp;
1110: }
1.22 albertel 1111:
1.384 ! albertel 1112: sub extlink {
! 1113: my ($res,$exact)=@_;
! 1114: if (!$exact) {
! 1115: $res=&Apache::lonnet::hreflocation($Apache::lonxml::pwd[-1],$res);
! 1116: }
! 1117: push(@Apache::lonxml::extlinks,$res)
! 1118: }
! 1119:
1.34 www 1120: sub writeallows {
1.126 www 1121: unless ($#extlinks>=0) { return; }
1.377 albertel 1122: my $thisurl = &Apache::lonnet::clutter(shift);
1.372 albertel 1123: if ($env{'httpref.'.$thisurl}) {
1124: $thisurl=$env{'httpref.'.$thisurl};
1.111 www 1125: }
1.34 www 1126: my $thisdir=$thisurl;
1127: $thisdir=~s/\/[^\/]+$//;
1128: my %httpref=();
1.142 albertel 1129: foreach (@extlinks) {
1.34 www 1130: $httpref{'httpref.'.
1.125 www 1131: &Apache::lonnet::hreflocation($thisdir,$_)}=$thisurl;
1.142 albertel 1132: }
1.126 www 1133: @extlinks=();
1.34 www 1134: &Apache::lonnet::appenv(%httpref);
1135: }
1136:
1.281 albertel 1137: sub register_ssi {
1138: my ($url,%form)=@_;
1139: push (@Apache::lonxml::ssi_info,{'url'=>$url,'form'=>\%form});
1140: return '';
1141: }
1142:
1143: sub do_registered_ssi {
1144: foreach my $info (@Apache::lonxml::ssi_info) {
1145: my %form=%{ $info->{'form'}};
1146: my $url=$info->{'url'};
1147: &Apache::lonnet::ssi($url,%form);
1148: }
1149: }
1.66 www 1150: #
1151: # Afterburner handles anchors, highlights and links
1152: #
1153: sub afterburn {
1154: my $result=shift;
1.154 albertel 1155: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
1156: ['highlight','anchor','link']);
1.372 albertel 1157: if ($env{'form.highlight'}) {
1158: foreach (split(/\,/,$env{'form.highlight'})) {
1.66 www 1159: my $anchorname=$_;
1160: my $matchthis=$anchorname;
1161: $matchthis=~s/\_+/\\s\+/g;
1.317 albertel 1162: $result=~s/(\Q$matchthis\E)/\<font color=\"red\"\>$1\<\/font\>/gs;
1.142 albertel 1163: }
1.66 www 1164: }
1.372 albertel 1165: if ($env{'form.link'}) {
1166: foreach (split(/\,/,$env{'form.link'})) {
1.66 www 1167: my ($anchorname,$linkurl)=split(/\>/,$_);
1168: my $matchthis=$anchorname;
1169: $matchthis=~s/\_+/\\s\+/g;
1.317 albertel 1170: $result=~s/(\Q$matchthis\E)/\<a href=\"$linkurl\"\>$1\<\/a\>/gs;
1.142 albertel 1171: }
1.66 www 1172: }
1.372 albertel 1173: if ($env{'form.anchor'}) {
1174: my $anchorname=$env{'form.anchor'};
1.66 www 1175: my $matchthis=$anchorname;
1176: $matchthis=~s/\_+/\\s\+/g;
1.317 albertel 1177: $result=~s/(\Q$matchthis\E)/\<a name=\"$anchorname\"\>$1\<\/a\>/s;
1.66 www 1178: $result.=(<<"ENDSCRIPT");
1.226 albertel 1179: <script type="text/javascript">
1.66 www 1180: document.location.hash='$anchorname';
1181: </script>
1182: ENDSCRIPT
1183: }
1184: return $result;
1185: }
1186:
1.79 www 1187: sub storefile {
1188: my ($file,$contents)=@_;
1.290 albertel 1189: &Apache::lonnet::correct_line_ends(\$contents);
1.79 www 1190: if (my $fh=Apache::File->new('>'.$file)) {
1191: print $fh $contents;
1192: $fh->close();
1.271 www 1193: return 1;
1.147 albertel 1194: } else {
1.271 www 1195: &warning("Unable to save file $file");
1196: return 0;
1.79 www 1197: }
1198: }
1199:
1.151 albertel 1200: sub createnewhtml {
1.321 www 1201: my $title=&mt('Title of document goes here');
1202: my $body=&mt('Body of document goes here');
1203: my $filecontents=(<<SIMPLECONTENT);
1.78 www 1204: <html>
1205: <head>
1.321 www 1206: <title>$title</title>
1.78 www 1207: </head>
1208: <body bgcolor="#FFFFFF">
1.321 www 1209: $body
1.78 www 1210: </body>
1211: </html>
1212: SIMPLECONTENT
1.321 www 1213: return $filecontents;
1.151 albertel 1214: }
1215:
1.274 albertel 1216: sub createnewsty {
1217: my $filecontents=(<<SIMPLECONTENT);
1218: <definetag name="">
1219: <render>
1220: <web></web>
1221: <tex></tex>
1222: </render>
1223: </definetag>
1224: SIMPLECONTENT
1225: return $filecontents;
1226: }
1227:
1.147 albertel 1228:
1.151 albertel 1229: sub inserteditinfo {
1.274 albertel 1230: my ($result,$filecontents,$filetype)=@_;
1.314 albertel 1231: $filecontents = &HTML::Entities::encode($filecontents,'<>&"');
1.147 albertel 1232: # my $editheader='<a href="#editsection">Edit below</a><hr />';
1.274 albertel 1233: my $xml_help = '';
1.321 www 1234: my $initialize='';
1.274 albertel 1235: if ($filetype eq 'html') {
1.323 www 1236: my $addbuttons=&Apache::lonhtmlcommon::htmlareaaddbuttons();
1.333 www 1237: $initialize=&Apache::lonhtmlcommon::htmlareaheaders().
1.347 albertel 1238: &Apache::lonhtmlcommon::spellheader();
1239: if (!&Apache::lonhtmlcommon::htmlareablocked() &&
1240: &Apache::lonhtmlcommon::htmlareabrowser()) {
1241: $initialize.=(<<FULLPAGE);
1.321 www 1242: <script type="text/javascript">
1.323 www 1243: $addbuttons
1244:
1.321 www 1245: HTMLArea.loadPlugin("FullPage");
1246:
1247: function initDocument() {
1.323 www 1248: var editor=new HTMLArea("filecont",config);
1.321 www 1249: editor.registerPlugin(FullPage);
1250: editor.generate();
1251: }
1252: </script>
1253: FULLPAGE
1.347 albertel 1254: } else {
1255: $initialize.=(<<FULLPAGE);
1256: <script type="text/javascript">
1257: $addbuttons
1258: function initDocument() {
1259: }
1260: </script>
1261: FULLPAGE
1262: }
1.321 www 1263: $result=~s/\<body([^\>]*)\>/\<body onload="initDocument()" $1\>/i;
1264: $xml_help=&Apache::loncommon::helpLatexCheatsheet();
1.274 albertel 1265: }
1266: my $cleanbut = '';
1.374 www 1267:
1.254 albertel 1268: my $titledisplay=&display_title();
1.280 www 1269: my %lt=&Apache::lonlocal::texthash('st' => 'Save this',
1270: 'vi' => 'View',
1271: 'ed' => 'Edit');
1.161 albertel 1272: my $buttons=(<<BUTTONS);
1.274 albertel 1273: $cleanbut
1.304 matthew 1274: <input type="submit" name="savethisfile" accesskey="s" value="$lt{'st'}" />
1275: <input type="submit" name="viewmode" accesskey="v" value="$lt{'vi'}" />
1.161 albertel 1276: BUTTONS
1.333 www 1277: $buttons.=&Apache::lonhtmlcommon::spelllink('xmledit','filecont');
1.338 albertel 1278: $buttons.=&Apache::lonhtmlcommon::htmlareaselectactive('filecont');
1.78 www 1279: my $editfooter=(<<ENDFOOTER);
1.321 www 1280: $initialize
1.78 www 1281: <hr />
1282: <a name="editsection" />
1.333 www 1283: <form method="post" name="xmledit">
1.240 albertel 1284: $xml_help
1.280 www 1285: <input type="hidden" name="editmode" value="$lt{'ed'}" />
1.170 www 1286: $buttons<br />
1.366 albertel 1287: <textarea style="width:100%" cols="80" rows="44" name="filecont" id="filecont">$filecontents</textarea>
1.170 www 1288: <br />$buttons
1.78 www 1289: <br />
1290: </form>
1.254 albertel 1291: $titledisplay
1.321 www 1292: </body>
1.78 www 1293: ENDFOOTER
1.147 albertel 1294: # $result=~s/(\<body[^\>]*\>)/$1$editheader/is;
1.78 www 1295: $result=~s/(\<\/body\>)/$editfooter/is;
1296: return $result;
1297: }
1298:
1.152 albertel 1299: sub get_target {
1.372 albertel 1300: my $viewgrades=&Apache::lonnet::allowed('vgr',$env{'request.course.id'});
1301: if ( $env{'request.state'} eq 'published') {
1302: if ( defined($env{'form.grade_target'})
1.152 albertel 1303: && ($viewgrades == 'F' )) {
1.372 albertel 1304: return ($env{'form.grade_target'});
1305: } elsif (defined($env{'form.grade_target'})) {
1306: if (($env{'form.grade_target'} eq 'web') ||
1307: ($env{'form.grade_target'} eq 'tex') ) {
1308: return $env{'form.grade_target'}
1.153 albertel 1309: } else {
1310: return 'web';
1311: }
1.152 albertel 1312: } else {
1313: return 'web';
1314: }
1.372 albertel 1315: } elsif ($env{'request.state'} eq 'construct') {
1316: if ( defined($env{'form.grade_target'})) {
1317: return ($env{'form.grade_target'});
1.152 albertel 1318: } else {
1319: return 'web';
1320: }
1321: } else {
1322: return 'web';
1323: }
1324: }
1325:
1.24 sakharuk 1326: sub handler {
1.255 sakharuk 1327: my $request=shift;
1328:
1329: my $target=&get_target();
1330:
1.372 albertel 1331: $Apache::lonxml::debug=$env{'user.debug'};
1.255 sakharuk 1332:
1.364 albertel 1333: &Apache::loncommon::content_type($request,'text/html');
1.255 sakharuk 1334: &Apache::loncommon::no_cache($request);
1.372 albertel 1335: if ($env{'request.state'} eq 'published') {
1.363 albertel 1336: $request->set_last_modified(&Apache::lonnet::metadata($request->uri,
1337: 'lastrevisiondate'));
1338: }
1.255 sakharuk 1339: $request->send_http_header;
1340:
1341: return OK if $request->header_only;
1.68 www 1342:
1343:
1.255 sakharuk 1344: my $file=&Apache::lonnet::filelocation("",$request->uri);
1.274 albertel 1345: my $filetype;
1346: if ($file =~ /\.sty$/) {
1347: $filetype='sty';
1348: } else {
1349: $filetype='html';
1350: }
1.78 www 1351: #
1352: # Edit action? Save file.
1353: #
1.372 albertel 1354: unless ($env{'request.state'} eq 'published') {
1.374 www 1355: if ($env{'form.savethisfile'}) {
1.372 albertel 1356: if (&storefile($file,$env{'form.filecont'})) {
1.309 albertel 1357: &Apache::lonxml::info("<font COLOR=\"#0000FF\">".
1358: &mt('Updated').": ".
1359: &Apache::lonlocal::locallocaltime(time).
1360: " </font>");
1.271 www 1361: }
1.255 sakharuk 1362: }
1363: }
1364: my %mystyle;
1365: my $result = '';
1366: my $filecontents=&Apache::lonnet::getfile($file);
1367: if ($filecontents eq -1) {
1.284 www 1368: my $bodytag=&Apache::loncommon::bodytag('File Error');
1369: my $fnf=&mt('File not found');
1.255 sakharuk 1370: $result=(<<ENDNOTFOUND);
1.78 www 1371: <html>
1372: <head>
1.284 www 1373: <title>$fnf</title>
1.78 www 1374: </head>
1.284 www 1375: $bodytag
1376: <b>$fnf: $file</b>
1.78 www 1377: </body>
1378: </html>
1379: ENDNOTFOUND
1.343 albertel 1380: $filecontents='';
1.372 albertel 1381: if ($env{'request.state'} ne 'published') {
1.274 albertel 1382: if ($filetype eq 'sty') {
1383: $filecontents=&createnewsty();
1384: } else {
1385: $filecontents=&createnewhtml();
1386: }
1.372 albertel 1387: $env{'form.editmode'}='Edit'; #force edit mode
1.255 sakharuk 1388: }
1389: } else {
1.372 albertel 1390: unless ($env{'request.state'} eq 'published') {
1.343 albertel 1391: if ($filecontents=~/BEGIN LON-CAPA Internal/) {
1.381 www 1392: &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 1393: }
1.264 www 1394: #
1395: # we are in construction space, see if edit mode forced
1396: &Apache::loncommon::get_unprocessed_cgi
1397: ($ENV{'QUERY_STRING'},['editmode']);
1.255 sakharuk 1398: }
1.372 albertel 1399: if (!$env{'form.editmode'} || $env{'form.viewmode'}) {
1.255 sakharuk 1400: $result = &Apache::lonxml::xmlparse($request,$target,$filecontents,
1401: '',%mystyle);
1.368 albertel 1402: undef($Apache::lonhomework::parsing_a_task);
1.255 sakharuk 1403: }
1.147 albertel 1404: }
1.255 sakharuk 1405:
1.78 www 1406: #
1407: # Edit action? Insert editing commands
1408: #
1.372 albertel 1409: unless ($env{'request.state'} eq 'published') {
1410: if ($env{'form.editmode'} && (!($env{'form.viewmode'}))) {
1.255 sakharuk 1411: my $displayfile=$request->uri;
1412: $displayfile=~s/^\/[^\/]*//;
1.349 albertel 1413: my $bodytag='<body bgcolor="#FFFFFF">';
1.372 albertel 1414: if ($env{'environment.remote'} eq 'off') {
1.349 albertel 1415: $bodytag=&Apache::loncommon::bodytag();
1416: }
1417: $result='<html>'.$bodytag.
1.309 albertel 1418: &Apache::lonxml::message_location().'<h3>'.
1419: $displayfile.
1.255 sakharuk 1420: '</h3></body></html>';
1.274 albertel 1421: $result=&inserteditinfo($result,$filecontents,$filetype);
1.255 sakharuk 1422: }
1.147 albertel 1423: }
1.274 albertel 1424: if ($filetype eq 'html') { writeallows($request->uri); }
1425:
1.255 sakharuk 1426:
1.309 albertel 1427: &Apache::lonxml::add_messages(\$result);
1.255 sakharuk 1428: $request->print($result);
1429:
1430: return OK;
1.253 albertel 1431: }
1432:
1433: sub display_title {
1434: my $result;
1.372 albertel 1435: if ($env{'request.state'} eq 'construct') {
1.253 albertel 1436: my $title=&Apache::lonnet::gettitle();
1437: if (!defined($title) || $title eq '') {
1.372 albertel 1438: $title = $env{'request.filename'};
1.253 albertel 1439: $title = substr($title, rindex($title, '/') + 1);
1440: }
1441: $result = "<script type='text/javascript'>top.document.title = '$title - LON-CAPA Construction Space';</script>";
1442: }
1443: return $result;
1.24 sakharuk 1444: }
1.147 albertel 1445:
1.22 albertel 1446: sub debug {
1.298 albertel 1447: if ($Apache::lonxml::debug eq "1") {
1448: $|=1;
1.300 albertel 1449: my $request=$Apache::lonxml::request;
1450: if (!$request) { $request=Apache->request; }
1.314 albertel 1451: $request->print('<font size="-2"><pre>DEBUG:'.&HTML::Entities::encode($_[0],'<>&"')."</pre></font>\n");
1.346 albertel 1452: #&Apache::lonnet::logthis($_[0]);
1.298 albertel 1453: }
1.22 albertel 1454: }
1.49 albertel 1455:
1.348 albertel 1456: sub show_error_warn_msg {
1.372 albertel 1457: if ($env{'request.filename'} eq '/home/httpd/html/res/lib/templates/simpleproblem.problem' &&
1458: &Apache::lonnet::allowed('mdc',$env{'request.course.id'})) {
1.351 albertel 1459: return 1;
1460: }
1.348 albertel 1461: return (($Apache::lonxml::debug eq 1) ||
1.372 albertel 1462: ($env{'request.state'} eq 'construct') ||
1.348 albertel 1463: ($Apache::lonhomework::browse eq 'F'
1464: &&
1.372 albertel 1465: $env{'form.show_errors'} eq 'on'));
1.348 albertel 1466: }
1467:
1.22 albertel 1468: sub error {
1.336 albertel 1469: $errorcount++;
1.348 albertel 1470: if ( &show_error_warn_msg() ) {
1.336 albertel 1471: # If printing in construction space, put the error inside <pre></pre>
1472: push(@Apache::lonxml::error_messages,
1473: $Apache::lonxml::warnings_error_header.
1474: "<b>ERROR:</b>".join("<br />\n",@_)."<br />\n");
1475: $Apache::lonxml::warnings_error_header='';
1476: } else {
1477: my $errormsg;
1478: my ($symb)=&Apache::lonnet::symbread();
1479: if ( !$symb ) {
1480: #public or browsers
1481: $errormsg=&mt("An error occured while processing this resource. The author has been notified.");
1482: }
1483: #notify author
1.372 albertel 1484: &Apache::lonmsg::author_res_msg($env{'request.filename'},join('<br />',@_));
1.336 albertel 1485: #notify course
1.372 albertel 1486: if ( $symb && $env{'request.course.id'} ) {
1.380 www 1487: my $cnum=$env{'course.'.$env{'request.course.id'}.'.num'};
1488: my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
1.336 albertel 1489: my (undef,%users)=&Apache::lonfeedback::decide_receiver(undef,0,1,1,1);
1.372 albertel 1490: my $declutter=&Apache::lonnet::declutter($env{'request.filename'});
1.336 albertel 1491: my @userlist;
1492: foreach (keys %users) {
1493: my ($user,$domain) = split(/:/, $_);
1494: push(@userlist,"$user\@$domain");
1.380 www 1495: my $key=$declutter.'_'.$user.'_'.$domain;
1496: my %lastnotified=&Apache::lonnet::get('nohist_xmlerrornotifications',
1497: [$key],
1498: $cdom,$cnum);
1499: my $now=time;
1500: if ($now-$lastnotified{$key}>86400) {
1501: &Apache::lonmsg::user_normal_msg($user,$domain,
1.336 albertel 1502: "Error [$declutter]",join('<br />',@_));
1.380 www 1503: &Apache::lonnet::put('nohist_xmlerrornotifications',
1504: {$key => $now},
1505: $cdom,$cnum);
1506: }
1.336 albertel 1507: }
1.372 albertel 1508: if ($env{'request.role.adv'}) {
1.336 albertel 1509: $errormsg=&mt("An error occured while processing this resource. The course personnel ([_1]) and the author have been notified.",join(', ',@userlist));
1510: } else {
1511: $errormsg=&mt("An error occured while processing this resource. The instructor has been notified.");
1512: }
1513: }
1514: push(@Apache::lonxml::error_messages,"<b>$errormsg</b> <br />");
1.52 albertel 1515: }
1.22 albertel 1516: }
1.49 albertel 1517:
1.22 albertel 1518: sub warning {
1.295 albertel 1519: $warningcount++;
1.261 albertel 1520:
1.372 albertel 1521: if ($env{'form.grade_target'} ne 'tex') {
1.348 albertel 1522: if ( &show_error_warn_msg() ) {
1.309 albertel 1523: push(@Apache::lonxml::warning_messages,
1524: $Apache::lonxml::warnings_error_header.
1525: "<b>W</b>ARNING<b>:</b>".join('<br />',@_)."<br />\n");
1.295 albertel 1526: $Apache::lonxml::warnings_error_header='';
1527: }
1528: }
1.309 albertel 1529: }
1530:
1531: sub info {
1.372 albertel 1532: if ($env{'form.grade_target'} ne 'tex'
1533: && $env{'request.state'} eq 'construct') {
1.309 albertel 1534: push(@Apache::lonxml::info_messages,join('<br />',@_)."<br />\n");
1535: }
1536: }
1537:
1538: sub message_location {
1539: return '__LONCAPA_INTERNAL_MESSAGE_LOCATION__';
1540: }
1541:
1542: sub add_messages {
1543: my ($msg)=@_;
1544: my $result=join(' ',
1545: @Apache::lonxml::info_messages,
1546: @Apache::lonxml::error_messages,
1547: @Apache::lonxml::warning_messages);
1548: undef(@Apache::lonxml::info_messages);
1549: undef(@Apache::lonxml::error_messages);
1550: undef(@Apache::lonxml::warning_messages);
1551: $$msg=~s/__LONCAPA_INTERNAL_MESSAGE_LOCATION__/$result/;
1552: $$msg=~s/__LONCAPA_INTERNAL_MESSAGE_LOCATION__//g;
1.83 albertel 1553: }
1554:
1555: sub get_param {
1.213 albertel 1556: my ($param,$parstack,$safeeval,$context,$case_insensitive) = @_;
1557: if ( ! $context ) { $context = -1; }
1558: my $args ='';
1559: if ( $#$parstack > (-2-$context) ) { $args=$$parstack[$context]; }
1.297 sakharuk 1560: if ( ! $Apache::lonxml::usestyle ) {
1561: $args=$Apache::lonxml::style_values.$args;
1562: }
1.213 albertel 1563: if ( ! $args ) { return undef; }
1564: if ( $case_insensitive ) {
1565: if ($args =~ s/(my \$)(\Q$param\E)(=\")/$1.lc($2).$3/ei) {
1566: return &Apache::run::run("{$args;".'return $'.$param.'}',
1567: $safeeval); #'
1568: } else {
1569: return undef;
1570: }
1571: } else {
1572: if ( $args =~ /my \$\Q$param\E=\"/ ) {
1573: return &Apache::run::run("{$args;".'return $'.$param.'}',
1574: $safeeval); #'
1575: } else {
1576: return undef;
1577: }
1578: }
1.22 albertel 1579: }
1580:
1.132 albertel 1581: sub get_param_var {
1.213 albertel 1582: my ($param,$parstack,$safeeval,$context,$case_insensitive) = @_;
1.132 albertel 1583: if ( ! $context ) { $context = -1; }
1584: my $args ='';
1585: if ( $#$parstack > (-2-$context) ) { $args=$$parstack[$context]; }
1.297 sakharuk 1586: if ( ! $Apache::lonxml::usestyle ) {
1587: $args=$Apache::lonxml::style_values.$args;
1588: }
1.230 albertel 1589: &Apache::lonxml::debug("Args are $args param is $param");
1.213 albertel 1590: if ($case_insensitive) {
1591: if (! ($args=~s/(my \$)(\Q$param\E)(=\")/$1.lc($2).$3/ei)) {
1592: return undef;
1593: }
1594: } elsif ( $args !~ /my \$\Q$param\E=\"/ ) { return undef; }
1.132 albertel 1595: my $value=&Apache::run::run("{$args;".'return $'.$param.'}',$safeeval); #'
1.230 albertel 1596: &Apache::lonxml::debug("first run is $value");
1.341 albertel 1597: if ($value =~ /^[\$\@\%][a-zA-Z_]\w*$/) {
1.230 albertel 1598: &Apache::lonxml::debug("doing second");
1599: my @result=&Apache::run::run("return $value",$safeeval,1);
1600: if (!defined($result[0])) {
1601: return $value
1602: } else {
1603: if (wantarray) { return @result; } else { return $result[0]; }
1604: }
1.132 albertel 1605: } else {
1606: return $value;
1607: }
1608: }
1609:
1.74 albertel 1610: sub register_insert {
1.75 albertel 1611: my @data = split /\n/, &Apache::lonnet::getfile('/home/httpd/lonTabs/insertlist.tab');
1.74 albertel 1612: my $i;
1.76 albertel 1613: my $tagnum=0;
1.74 albertel 1614: my @order;
1615: for ($i=0;$i < $#data; $i++) {
1616: my $line = $data[$i];
1617: if ( $line =~ /^\#/ || $line =~ /^\s*\n/) { next; }
1618: if ( $line =~ /TABLE/ ) { last; }
1.268 bowersj2 1619: my ($tag,$descrip,$color,$function,$show,$helpfile,$helpdesc) = split(/,/, $line);
1.135 albertel 1620: if ($tag) {
1621: $insertlist{"$tagnum.tag"} = $tag;
1622: $insertlist{"$tagnum.description"} = $descrip;
1623: $insertlist{"$tagnum.color"} = $color;
1624: $insertlist{"$tagnum.function"} = $function;
1625: if (!defined($show)) { $show='yes'; }
1626: $insertlist{"$tagnum.show"}= $show;
1.268 bowersj2 1627: $insertlist{"$tagnum.helpfile"} = $helpfile;
1628: $insertlist{"$tagnum.helpdesc"} = $helpdesc;
1.135 albertel 1629: $insertlist{"$tag.num"}=$tagnum;
1630: $tagnum++;
1631: }
1.74 albertel 1632: }
1.76 albertel 1633: $i++; #skipping TABLE line
1634: $tagnum = 0;
1.74 albertel 1635: for (;$i < $#data;$i++) {
1636: my $line = $data[$i];
1.76 albertel 1637: my ($mnemonic,@which) = split(/ +/,$line);
1638: my $tag = $insertlist{"$tagnum.tag"};
1.144 matthew 1639: for (my $j=0;$j <=$#which;$j++) {
1.74 albertel 1640: if ( $which[$j] eq 'Y' ) {
1.76 albertel 1641: if ($insertlist{"$j.show"} ne 'no') {
1642: push(@{ $insertlist{"$tag.which"} },$j);
1643: }
1.74 albertel 1644: }
1645: }
1.76 albertel 1646: $tagnum++;
1.74 albertel 1647: }
1648: }
1.98 albertel 1649:
1650: sub description {
1651: my ($token)=@_;
1.138 albertel 1652: my $tagnum;
1653: my $tag=$token->[1];
1654: foreach my $namespace (reverse @Apache::lonxml::namespace) {
1655: my $testtag=$namespace.'::'.$tag;
1656: $tagnum=$insertlist{"$testtag.num"};
1657: if (defined($tagnum)) { last; }
1658: }
1659: if (!defined ($tagnum)) { $tagnum=$Apache::lonxml::insertlist{"$tag.num"}; }
1660: return $insertlist{$tagnum.'.description'};
1.268 bowersj2 1661: }
1662:
1663: # Returns a list containing the help file, and the description
1664: sub helpinfo {
1665: my ($token)=@_;
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.'.helpfile'}, $insertlist{$tagnum.'.helpdesc'});
1.98 albertel 1675: }
1.123 albertel 1676:
1677: # ----------------------------------------------------------------- whichuser
1678: # returns a list of $symb, $courseid, $domain, $name that is correct for
1679: # calls to lonnet functions for this setup.
1680: # - looks for form.grade_ parameters
1681: sub whichuser {
1.262 matthew 1682: my ($passedsymb)=@_;
1.245 albertel 1683: my ($symb,$courseid,$domain,$name,$publicuser);
1.372 albertel 1684: if (defined($env{'form.grade_symb'})) {
1.350 albertel 1685: my ($tmp_courseid)=
1686: &Apache::loncommon::get_env_multiple('form.grade_courseid');
1687: my $allowed=&Apache::lonnet::allowed('vgr',$tmp_courseid);
1688: if (!$allowed &&
1.372 albertel 1689: exists($env{'request.course.sec'}) &&
1690: $env{'request.course.sec'} !~ /^\s*$/) {
1.350 albertel 1691: $allowed=&Apache::lonnet::allowed('vgr',$tmp_courseid.
1.372 albertel 1692: '/'.$env{'request.course.sec'});
1.350 albertel 1693: }
1694: if ($allowed) {
1695: ($symb)=&Apache::loncommon::get_env_multiple('form.grade_symb');
1696: $courseid=$tmp_courseid;
1697: ($domain)=&Apache::loncommon::get_env_multiple('form.grade_domain');
1698: ($name)=&Apache::loncommon::get_env_multiple('form.grade_username');
1699: return ($symb,$courseid,$domain,$name,$publicuser);
1700: }
1701: }
1702: if (!$passedsymb) {
1703: $symb=&Apache::lonnet::symbread();
1.134 albertel 1704: } else {
1.350 albertel 1705: $symb=$passedsymb;
1706: }
1.372 albertel 1707: $courseid=$env{'request.course.id'};
1708: $domain=$env{'user.domain'};
1709: $name=$env{'user.name'};
1.350 albertel 1710: if ($name eq 'public' && $domain eq 'public') {
1.372 albertel 1711: if (!defined($env{'form.username'})) {
1712: $env{'form.username'}.=time.rand(10000000);
1.244 albertel 1713: }
1.372 albertel 1714: $name.=$env{'form.username'};
1.123 albertel 1715: }
1.245 albertel 1716: return ($symb,$courseid,$domain,$name,$publicuser);
1.123 albertel 1717: }
1718:
1.1 sakharuk 1719: 1;
1720: __END__
1.68 www 1721:
1722:
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