Annotation of loncom/xml/lonxml.pm, revision 1.379
1.2 sakharuk 1: # The LearningOnline Network with CAPA
1.3 sakharuk 2: # XML Parser Module
1.2 sakharuk 3: #
1.379 ! albertel 4: # $Id: lonxml.pm,v 1.378 2005/06/24 21:09:31 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) = @_;
668: $safeeval->permit("entereval");
669: $safeeval->permit(":base_math");
670: $safeeval->permit("sort");
1.286 albertel 671: $safeeval->permit("time");
1.371 albertel 672: $safeeval->deny("rand");
673: $safeeval->deny("srand");
1.82 ng 674: $safeeval->deny(":base_io");
1.102 albertel 675: $safehole->wrap(\&Apache::scripttag::xmlparse,$safeeval,'&xmlparse');
1.251 albertel 676: $safehole->wrap(\&Apache::outputtags::multipart,$safeeval,'&multipart');
1.82 ng 677: $safehole->wrap(\&Apache::lonnet::EXT,$safeeval,'&EXT');
1.324 albertel 678: $safehole->wrap(\&Apache::chemresponse::chem_standard_order,$safeeval,
679: '&chem_standard_order');
1.369 albertel 680: $safehole->wrap(\&Apache::response::check_status,$safeeval,'&check_status');
1.324 albertel 681:
1.82 ng 682: $safehole->wrap(\&Math::Cephes::asin,$safeeval,'&asin');
683: $safehole->wrap(\&Math::Cephes::acos,$safeeval,'&acos');
684: $safehole->wrap(\&Math::Cephes::atan,$safeeval,'&atan');
685: $safehole->wrap(\&Math::Cephes::sinh,$safeeval,'&sinh');
686: $safehole->wrap(\&Math::Cephes::cosh,$safeeval,'&cosh');
687: $safehole->wrap(\&Math::Cephes::tanh,$safeeval,'&tanh');
688: $safehole->wrap(\&Math::Cephes::asinh,$safeeval,'&asinh');
689: $safehole->wrap(\&Math::Cephes::acosh,$safeeval,'&acosh');
690: $safehole->wrap(\&Math::Cephes::atanh,$safeeval,'&atanh');
691: $safehole->wrap(\&Math::Cephes::erf,$safeeval,'&erf');
692: $safehole->wrap(\&Math::Cephes::erfc,$safeeval,'&erfc');
693: $safehole->wrap(\&Math::Cephes::j0,$safeeval,'&j0');
694: $safehole->wrap(\&Math::Cephes::j1,$safeeval,'&j1');
695: $safehole->wrap(\&Math::Cephes::jn,$safeeval,'&jn');
696: $safehole->wrap(\&Math::Cephes::jv,$safeeval,'&jv');
697: $safehole->wrap(\&Math::Cephes::y0,$safeeval,'&y0');
698: $safehole->wrap(\&Math::Cephes::y1,$safeeval,'&y1');
699: $safehole->wrap(\&Math::Cephes::yn,$safeeval,'&yn');
700: $safehole->wrap(\&Math::Cephes::yv,$safeeval,'&yv');
1.215 albertel 701:
702: $safehole->wrap(\&Math::Cephes::bdtr ,$safeeval,'&bdtr' );
703: $safehole->wrap(\&Math::Cephes::bdtrc ,$safeeval,'&bdtrc' );
704: $safehole->wrap(\&Math::Cephes::bdtri ,$safeeval,'&bdtri' );
705: $safehole->wrap(\&Math::Cephes::btdtr ,$safeeval,'&btdtr' );
706: $safehole->wrap(\&Math::Cephes::chdtr ,$safeeval,'&chdtr' );
707: $safehole->wrap(\&Math::Cephes::chdtrc,$safeeval,'&chdtrc');
708: $safehole->wrap(\&Math::Cephes::chdtri,$safeeval,'&chdtri');
709: $safehole->wrap(\&Math::Cephes::fdtr ,$safeeval,'&fdtr' );
710: $safehole->wrap(\&Math::Cephes::fdtrc ,$safeeval,'&fdtrc' );
711: $safehole->wrap(\&Math::Cephes::fdtri ,$safeeval,'&fdtri' );
712: $safehole->wrap(\&Math::Cephes::gdtr ,$safeeval,'&gdtr' );
713: $safehole->wrap(\&Math::Cephes::gdtrc ,$safeeval,'&gdtrc' );
714: $safehole->wrap(\&Math::Cephes::nbdtr ,$safeeval,'&nbdtr' );
715: $safehole->wrap(\&Math::Cephes::nbdtrc,$safeeval,'&nbdtrc');
716: $safehole->wrap(\&Math::Cephes::nbdtri,$safeeval,'&nbdtri');
717: $safehole->wrap(\&Math::Cephes::ndtr ,$safeeval,'&ndtr' );
718: $safehole->wrap(\&Math::Cephes::ndtri ,$safeeval,'&ndtri' );
719: $safehole->wrap(\&Math::Cephes::pdtr ,$safeeval,'&pdtr' );
720: $safehole->wrap(\&Math::Cephes::pdtrc ,$safeeval,'&pdtrc' );
721: $safehole->wrap(\&Math::Cephes::pdtri ,$safeeval,'&pdtri' );
722: $safehole->wrap(\&Math::Cephes::stdtr ,$safeeval,'&stdtr' );
723: $safehole->wrap(\&Math::Cephes::stdtri,$safeeval,'&stdtri');
724:
725: # $safehole->wrap(\&Math::Cephes::new_fract,$safeeval,'&new_fract');
726: # $safehole->wrap(\&Math::Cephes::radd,$safeeval,'&radd');
727: # $safehole->wrap(\&Math::Cephes::rsub,$safeeval,'&rsub');
728: # $safehole->wrap(\&Math::Cephes::rmul,$safeeval,'&rmul');
729: # $safehole->wrap(\&Math::Cephes::rdiv,$safeeval,'&rdiv');
730: # $safehole->wrap(\&Math::Cephes::euclid,$safeeval,'&euclid');
731:
1.91 ng 732: $safehole->wrap(\&Math::Random::random_beta,$safeeval,'&math_random_beta');
733: $safehole->wrap(\&Math::Random::random_chi_square,$safeeval,'&math_random_chi_square');
734: $safehole->wrap(\&Math::Random::random_exponential,$safeeval,'&math_random_exponential');
735: $safehole->wrap(\&Math::Random::random_f,$safeeval,'&math_random_f');
736: $safehole->wrap(\&Math::Random::random_gamma,$safeeval,'&math_random_gamma');
737: $safehole->wrap(\&Math::Random::random_multivariate_normal,$safeeval,'&math_random_multivariate_normal');
738: $safehole->wrap(\&Math::Random::random_multinomial,$safeeval,'&math_random_multinomial');
739: $safehole->wrap(\&Math::Random::random_noncentral_chi_square,$safeeval,'&math_random_noncentral_chi_square');
740: $safehole->wrap(\&Math::Random::random_noncentral_f,$safeeval,'&math_random_noncentral_f');
741: $safehole->wrap(\&Math::Random::random_normal,$safeeval,'&math_random_normal');
742: $safehole->wrap(\&Math::Random::random_permutation,$safeeval,'&math_random_permutation');
1.93 ng 743: $safehole->wrap(\&Math::Random::random_permuted_index,$safeeval,'&math_random_permuted_index');
1.91 ng 744: $safehole->wrap(\&Math::Random::random_uniform,$safeeval,'&math_random_uniform');
745: $safehole->wrap(\&Math::Random::random_poisson,$safeeval,'&math_random_poisson');
746: $safehole->wrap(\&Math::Random::random_uniform_integer,$safeeval,'&math_random_uniform_integer');
747: $safehole->wrap(\&Math::Random::random_negative_binomial,$safeeval,'&math_random_negative_binomial');
748: $safehole->wrap(\&Math::Random::random_binomial,$safeeval,'&math_random_binomial');
749: $safehole->wrap(\&Math::Random::random_seed_from_phrase,$safeeval,'&random_seed_from_phrase');
750: $safehole->wrap(\&Math::Random::random_set_seed_from_phrase,$safeeval,'&random_set_seed_from_phrase');
751: $safehole->wrap(\&Math::Random::random_get_seed,$safeeval,'&random_get_seed');
752: $safehole->wrap(\&Math::Random::random_set_seed,$safeeval,'&random_set_seed');
1.305 albertel 753: $safehole->wrap(\&Apache::lonxml::error,$safeeval,'&LONCAPA_INTERNAL_ERROR');
1.311 albertel 754: $safehole->wrap(\&Apache::lonxml::debug,$safeeval,'&LONCAPA_INTERNAL_DEBUG');
1.322 albertel 755: $safehole->wrap(\&Apache::caparesponse::get_sigrange,$safeeval,'&LONCAPA_INTERNAL_get_sigrange');
1.91 ng 756:
1.82 ng 757: #need to inspect this class of ops
758: # $safeeval->deny(":base_orig");
1.331 albertel 759: $safeeval->permit("require");
1.91 ng 760: $safeinit .= ';$external::target="'.$target.'";';
1.82 ng 761: &Apache::run::run($safeinit,$safeeval);
1.373 albertel 762: &initialize_rndseed($safeeval);
763: }
1.303 albertel 764:
1.373 albertel 765: sub initialize_rndseed {
766: my ($safeeval)=@_;
767: my $rndseed;
768: my ($symb,$courseid,$domain,$name) = &Apache::lonxml::whichuser();
769: $rndseed=&Apache::lonnet::rndseed($symb,$courseid,$domain,$name);
770: my $safeinit = '$external::randomseed="'.$rndseed.'";';
771: &Apache::lonxml::debug("Setting rndseed to $rndseed");
772: &Apache::run::run($safeinit,$safeeval);
1.207 albertel 773: }
774:
775: sub default_homework_load {
776: my ($safeeval)=@_;
777: &Apache::lonxml::debug('Loading default_homework');
778: my $default=&Apache::lonnet::getfile('/home/httpd/html/res/adm/includes/default_homework.lcpm');
1.241 albertel 779: if ($default eq -1) {
1.207 albertel 780: &Apache::lonxml::error("<b>Unable to find <i>default_homework.lcpm</i></b>");
781: } else {
782: &Apache::run::run($default,$safeeval);
783: $Apache::lonxml::default_homework_loaded=1;
784: }
1.17 albertel 785: }
786:
1.358 albertel 787: {
788: my $alarm_depth;
789: sub init_alarm {
790: alarm(0);
791: $alarm_depth=0;
792: }
793:
794: sub start_alarm {
795: if ($alarm_depth<1) {
796: my $old=alarm($Apache::lonnet::perlvar{'lonScriptTimeout'});
797: if ($old) {
798: &Apache::lonxml::error("Cancelled an alarm of $old, this shouldn't occur.");
799: }
800: }
801: $alarm_depth++;
802: }
803:
804: sub end_alarm {
805: $alarm_depth--;
806: if ($alarm_depth<1) { alarm(0); }
807: }
808: }
1.328 albertel 809: my $metamode_was;
1.55 albertel 810: sub startredirection {
1.328 albertel 811: if (!$Apache::lonxml::redirection) {
812: $metamode_was=$Apache::lonxml::metamode;
813: }
814: $Apache::lonxml::metamode=0;
815: $Apache::lonxml::redirection++;
816: push (@Apache::lonxml::outputstack, '');
1.55 albertel 817: }
818:
819: sub endredirection {
1.328 albertel 820: if (!$Apache::lonxml::redirection) {
821: &Apache::lonxml::error("Endredirection was called, before a startredirection, perhaps you have unbalanced tags. Some debuging information:".join ":",caller);
822: return '';
823: }
824: $Apache::lonxml::redirection--;
825: if (!$Apache::lonxml::redirection) {
826: $Apache::lonxml::metamode=$metamode_was;
827: }
828: pop @Apache::lonxml::outputstack;
1.97 albertel 829: }
830:
831: sub end_tag {
832: my ($tagstack,$parstack,$token)=@_;
833: pop(@$tagstack);
834: pop(@$parstack);
835: &decreasedepth($token);
1.55 albertel 836: }
837:
1.17 albertel 838: sub initdepth {
839: @Apache::lonxml::depthcounter=();
840: $Apache::lonxml::depth=-1;
841: $Apache::lonxml::olddepth=-1;
842: }
843:
1.339 albertel 844: my @timers;
845: my $lasttime;
1.17 albertel 846: sub increasedepth {
1.19 albertel 847: my ($token) = @_;
1.17 albertel 848: $Apache::lonxml::depth++;
849: $Apache::lonxml::depthcounter[$Apache::lonxml::depth]++;
850: if ($Apache::lonxml::depthcounter[$Apache::lonxml::depth]==1) {
851: $Apache::lonxml::olddepth=$Apache::lonxml::depth;
852: }
1.340 albertel 853: my $time;
854: if ($Apache::lonxml::debug eq "1") {
855: push(@timers,[&gettimeofday()]);
856: $time=&tv_interval($lasttime);
857: $lasttime=[&gettimeofday()];
858: }
1.339 albertel 859: my $spacing=' 'x($Apache::lonxml::depth-1);
1.42 albertel 860: my $curdepth=join('_',@Apache::lonxml::depthcounter);
1.339 albertel 861: &Apache::lonxml::debug("s$spacing$Apache::lonxml::depth : $Apache::lonxml::olddepth : $curdepth : $token->[1] : $time : \n");
1.54 albertel 862: #print "<br />s $Apache::lonxml::depth : $Apache::lonxml::olddepth : $curdepth : $token->[1]\n";
1.17 albertel 863: }
864:
865: sub decreasedepth {
1.19 albertel 866: my ($token) = @_;
1.17 albertel 867: $Apache::lonxml::depth--;
1.36 albertel 868: if ($Apache::lonxml::depth<$Apache::lonxml::olddepth-1) {
869: $#Apache::lonxml::depthcounter--;
870: $Apache::lonxml::olddepth=$Apache::lonxml::depth+1;
871: }
1.43 albertel 872: if ( $Apache::lonxml::depth < -1) {
1.280 www 873: &Apache::lonxml::warning(&mt("Missing tags, unable to properly run file."));
1.43 albertel 874: $Apache::lonxml::depth='-1';
875: }
1.340 albertel 876: my ($timer,$time);
877: if ($Apache::lonxml::debug eq "1") {
878: $timer=pop(@timers);
879: $time=&tv_interval($lasttime);
880: $lasttime=[&gettimeofday()];
881: }
1.339 albertel 882: my $spacing=' 'x$Apache::lonxml::depth;
1.42 albertel 883: my $curdepth=join('_',@Apache::lonxml::depthcounter);
1.339 albertel 884: &Apache::lonxml::debug("e$spacing$Apache::lonxml::depth : $Apache::lonxml::olddepth : $curdepth : $token->[1] : $time : ".&tv_interval($timer)."\n");
1.54 albertel 885: #print "<br />e $Apache::lonxml::depth : $Apache::lonxml::olddepth : $token->[1] : $curdepth\n";
1.1 sakharuk 886: }
1.19 albertel 887:
1.180 albertel 888: sub get_all_text_unbalanced {
1.190 albertel 889: #there is a copy of this in lonpublisher.pm
1.326 albertel 890: my($tag,$pars)= @_;
891: my $token;
892: my $result='';
893: $tag='<'.$tag.'>';
894: while ($token = $$pars[-1]->get_token) {
895: if (($token->[0] eq 'T')||($token->[0] eq 'C')||($token->[0] eq 'D')) {
896: $result.=$token->[1];
897: } elsif ($token->[0] eq 'PI') {
898: $result.=$token->[2];
899: } elsif ($token->[0] eq 'S') {
900: $result.=$token->[4];
901: } elsif ($token->[0] eq 'E') {
902: $result.=$token->[2];
903: }
904: if ($result =~ /\Q$tag\E/is) {
905: ($result,my $redo)=$result =~ /(.*)\Q$tag\E(.*)/is;
906: #&Apache::lonxml::debug('Got a winner with leftovers ::'.$2);
907: #&Apache::lonxml::debug('Result is :'.$1);
908: $redo=$tag.$redo;
909: &Apache::lonxml::newparser($pars,\$redo);
910: last;
911: }
912: }
913: return $result
1.204 albertel 914: }
915:
916: sub increment_counter {
1.247 albertel 917: my ($increment) = @_;
1.289 sakharuk 918: if (defined($increment) && $increment gt 0) {
919: $Apache::lonxml::counter+=$increment;
920: } else {
921: $Apache::lonxml::counter++;
1.247 albertel 922: }
1.289 sakharuk 923: $Apache::lonxml::counter_changed=1;
1.204 albertel 924: }
925:
926: sub init_counter {
1.372 albertel 927: if (defined($env{'form.counter'})) {
928: $Apache::lonxml::counter=$env{'form.counter'};
1.247 albertel 929: $Apache::lonxml::counter_changed=0;
1.237 sakharuk 930: } else {
1.204 albertel 931: $Apache::lonxml::counter=1;
1.247 albertel 932: $Apache::lonxml::counter_changed=1;
1.204 albertel 933: }
934: }
935:
936: sub store_counter {
937: &Apache::lonnet::appenv(('form.counter' => $Apache::lonxml::counter));
938: return '';
1.180 albertel 939: }
940:
1.19 albertel 941: sub get_all_text {
1.270 albertel 942: my($tag,$pars,$style)= @_;
943: my $gotfullstack=1;
944: if (ref($pars) ne 'ARRAY') {
945: $gotfullstack=0;
946: $pars=[$pars];
947: }
948: if (ref($style) ne 'HASH') {
949: $style={};
950: }
951: my $depth=0;
952: my $token;
953: my $result='';
954: if ( $tag =~ m:^/: ) {
955: my $tag=substr($tag,1);
956: #&Apache::lonxml::debug("have:$tag:");
957: my $top_empty=0;
958: while (($depth >=0) && ($#$pars > -1) && (!$top_empty)) {
959: while (($depth >=0) && ($token = $$pars[-1]->get_token)) {
960: #&Apache::lonxml::debug("e token:$token->[0]:$depth:$token->[1]:".$#$pars.":".$#Apache::lonxml::pwd);
961: if (($token->[0] eq 'T')||($token->[0] eq 'C')||($token->[0] eq 'D')) {
962: $result.=$token->[1];
963: } elsif ($token->[0] eq 'PI') {
964: $result.=$token->[2];
965: } elsif ($token->[0] eq 'S') {
1.316 albertel 966: if ($token->[1] =~ /^\Q$tag\E$/i) { $depth++; }
967: if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_ON$/) { $Apache::lonxml::usestyle=1; }
968: if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_OFF$/) { $Apache::lonxml::usestyle=0; }
1.270 albertel 969: $result.=$token->[4];
970: } elsif ($token->[0] eq 'E') {
1.316 albertel 971: if ( $token->[1] =~ /^\Q$tag\E$/i) { $depth--; }
1.270 albertel 972: #skip sending back the last end tag
1.283 albertel 973: if ($depth == 0 && exists($$style{'/'.$token->[1]}) && $Apache::lonxml::usestyle) {
1.270 albertel 974: my $string=
975: '<LONCAPA_INTERNAL_TURN_STYLE_OFF end="yes" />'.
976: $$style{'/'.$token->[1]}.
977: $token->[2].
978: '<LONCAPA_INTERNAL_TURN_STYLE_ON />';
979: &Apache::lonxml::newparser($pars,\$string);
980: #&Apache::lonxml::debug("reParsing $string");
981: next;
982: }
983: if ($depth > -1) {
984: $result.=$token->[2];
985: } else {
986: $$pars[-1]->unget_token($token);
987: }
988: }
989: }
990: if (($depth >=0) && ($#$pars == 0) ) { $top_empty=1; }
991: if (($depth >=0) && ($#$pars > 0) ) {
992: pop(@$pars);
993: pop(@Apache::lonxml::pwd);
994: }
995: }
996: if ($top_empty && $depth >= 0) {
997: #never found the end tag ran out of text, throw error send back blank
998: &error('Never found end tag for <'.$tag.
999: '> current string <pre>'.
1.314 albertel 1000: &HTML::Entities::encode($result,'<>&"').
1.270 albertel 1001: '</pre>');
1002: if ($gotfullstack) {
1003: my $newstring='</'.$tag.'>'.$result;
1004: &Apache::lonxml::newparser($pars,\$newstring);
1005: }
1006: $result='';
1007: }
1008: } else {
1009: while ($#$pars > -1) {
1010: while ($token = $$pars[-1]->get_token) {
1011: #&Apache::lonxml::debug("s token:$token->[0]:$depth:$token->[1]");
1012: if (($token->[0] eq 'T')||($token->[0] eq 'C')||
1013: ($token->[0] eq 'D')) {
1014: $result.=$token->[1];
1015: } elsif ($token->[0] eq 'PI') {
1016: $result.=$token->[2];
1017: } elsif ($token->[0] eq 'S') {
1.316 albertel 1018: if ( $token->[1] =~ /^\Q$tag\E$/i) {
1.270 albertel 1019: $$pars[-1]->unget_token($token); last;
1020: } else {
1021: $result.=$token->[4];
1022: }
1.316 albertel 1023: if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_ON$/) { $Apache::lonxml::usestyle=1; }
1024: if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_OFF$/) { $Apache::lonxml::usestyle=0; }
1.270 albertel 1025: } elsif ($token->[0] eq 'E') {
1026: $result.=$token->[2];
1027: }
1028: }
1029: if (($#$pars > 0) ) {
1030: pop(@$pars);
1031: pop(@Apache::lonxml::pwd);
1032: } else { last; }
1033: }
1034: }
1035: #&Apache::lonxml::debug("Exit:$result:");
1036: return $result
1.19 albertel 1037: }
1038:
1.23 albertel 1039: sub newparser {
1040: my ($parser,$contentref,$dir) = @_;
1.167 albertel 1041: push (@$parser,HTML::LCParser->new($contentref));
1.365 albertel 1042: $$parser[-1]->xml_mode(1);
1043: $$parser[-1]->marked_sections(1);
1.23 albertel 1044: if ( $dir eq '' ) {
1045: push (@Apache::lonxml::pwd, $Apache::lonxml::pwd[$#Apache::lonxml::pwd]);
1046: } else {
1047: push (@Apache::lonxml::pwd, $dir);
1048: }
1049: }
1.1 sakharuk 1050:
1.8 albertel 1051: sub parstring {
1052: my ($token) = @_;
1053: my $temp='';
1.142 albertel 1054: foreach (@{$token->[3]}) {
1.35 www 1055: unless ($_=~/\W/) {
1.42 albertel 1056: my $val=$token->[2]->{$_};
1.231 albertel 1057: $val =~ s/([\%\@\\\"\'])/\\$1/g;
1.342 albertel 1058: $val =~ s/(\$[^{a-zA-Z_])/\\$1/g;
1.346 albertel 1059: $val =~ s/(\$)$/\\$1/;
1.51 albertel 1060: #if ($val =~ m/^[\%\@]/) { $val="\\".$val; }
1.267 sakharuk 1061: $temp .= "my \$$_=\"$val\";";
1.20 albertel 1062: }
1.142 albertel 1063: }
1.8 albertel 1064: return $temp;
1065: }
1.22 albertel 1066:
1.34 www 1067: sub writeallows {
1.126 www 1068: unless ($#extlinks>=0) { return; }
1.377 albertel 1069: my $thisurl = &Apache::lonnet::clutter(shift);
1.372 albertel 1070: if ($env{'httpref.'.$thisurl}) {
1071: $thisurl=$env{'httpref.'.$thisurl};
1.111 www 1072: }
1.34 www 1073: my $thisdir=$thisurl;
1074: $thisdir=~s/\/[^\/]+$//;
1075: my %httpref=();
1.142 albertel 1076: foreach (@extlinks) {
1.34 www 1077: $httpref{'httpref.'.
1.125 www 1078: &Apache::lonnet::hreflocation($thisdir,$_)}=$thisurl;
1.142 albertel 1079: }
1.126 www 1080: @extlinks=();
1.34 www 1081: &Apache::lonnet::appenv(%httpref);
1082: }
1083:
1.281 albertel 1084: sub register_ssi {
1085: my ($url,%form)=@_;
1086: push (@Apache::lonxml::ssi_info,{'url'=>$url,'form'=>\%form});
1087: return '';
1088: }
1089:
1090: sub do_registered_ssi {
1091: foreach my $info (@Apache::lonxml::ssi_info) {
1092: my %form=%{ $info->{'form'}};
1093: my $url=$info->{'url'};
1094: &Apache::lonnet::ssi($url,%form);
1095: }
1096: }
1.66 www 1097: #
1098: # Afterburner handles anchors, highlights and links
1099: #
1100: sub afterburn {
1101: my $result=shift;
1.154 albertel 1102: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
1103: ['highlight','anchor','link']);
1.372 albertel 1104: if ($env{'form.highlight'}) {
1105: foreach (split(/\,/,$env{'form.highlight'})) {
1.66 www 1106: my $anchorname=$_;
1107: my $matchthis=$anchorname;
1108: $matchthis=~s/\_+/\\s\+/g;
1.317 albertel 1109: $result=~s/(\Q$matchthis\E)/\<font color=\"red\"\>$1\<\/font\>/gs;
1.142 albertel 1110: }
1.66 www 1111: }
1.372 albertel 1112: if ($env{'form.link'}) {
1113: foreach (split(/\,/,$env{'form.link'})) {
1.66 www 1114: my ($anchorname,$linkurl)=split(/\>/,$_);
1115: my $matchthis=$anchorname;
1116: $matchthis=~s/\_+/\\s\+/g;
1.317 albertel 1117: $result=~s/(\Q$matchthis\E)/\<a href=\"$linkurl\"\>$1\<\/a\>/gs;
1.142 albertel 1118: }
1.66 www 1119: }
1.372 albertel 1120: if ($env{'form.anchor'}) {
1121: my $anchorname=$env{'form.anchor'};
1.66 www 1122: my $matchthis=$anchorname;
1123: $matchthis=~s/\_+/\\s\+/g;
1.317 albertel 1124: $result=~s/(\Q$matchthis\E)/\<a name=\"$anchorname\"\>$1\<\/a\>/s;
1.66 www 1125: $result.=(<<"ENDSCRIPT");
1.226 albertel 1126: <script type="text/javascript">
1.66 www 1127: document.location.hash='$anchorname';
1128: </script>
1129: ENDSCRIPT
1130: }
1131: return $result;
1132: }
1133:
1.79 www 1134: sub storefile {
1135: my ($file,$contents)=@_;
1.290 albertel 1136: &Apache::lonnet::correct_line_ends(\$contents);
1.79 www 1137: if (my $fh=Apache::File->new('>'.$file)) {
1138: print $fh $contents;
1139: $fh->close();
1.271 www 1140: return 1;
1.147 albertel 1141: } else {
1.271 www 1142: &warning("Unable to save file $file");
1143: return 0;
1.79 www 1144: }
1145: }
1146:
1.151 albertel 1147: sub createnewhtml {
1.321 www 1148: my $title=&mt('Title of document goes here');
1149: my $body=&mt('Body of document goes here');
1150: my $filecontents=(<<SIMPLECONTENT);
1151: <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml/11/DTD/xhtml11.dtd">
1.78 www 1152: <html>
1153: <head>
1.321 www 1154: <title>$title</title>
1.78 www 1155: </head>
1156: <body bgcolor="#FFFFFF">
1.321 www 1157: $body
1.78 www 1158: </body>
1159: </html>
1160: SIMPLECONTENT
1.321 www 1161: return $filecontents;
1.151 albertel 1162: }
1163:
1.274 albertel 1164: sub createnewsty {
1165: my $filecontents=(<<SIMPLECONTENT);
1166: <definetag name="">
1167: <render>
1168: <web></web>
1169: <tex></tex>
1170: </render>
1171: </definetag>
1172: SIMPLECONTENT
1173: return $filecontents;
1174: }
1175:
1.147 albertel 1176:
1.151 albertel 1177: sub inserteditinfo {
1.274 albertel 1178: my ($result,$filecontents,$filetype)=@_;
1.314 albertel 1179: $filecontents = &HTML::Entities::encode($filecontents,'<>&"');
1.147 albertel 1180: # my $editheader='<a href="#editsection">Edit below</a><hr />';
1.274 albertel 1181: my $xml_help = '';
1.321 www 1182: my $initialize='';
1.274 albertel 1183: if ($filetype eq 'html') {
1.323 www 1184: my $addbuttons=&Apache::lonhtmlcommon::htmlareaaddbuttons();
1.333 www 1185: $initialize=&Apache::lonhtmlcommon::htmlareaheaders().
1.347 albertel 1186: &Apache::lonhtmlcommon::spellheader();
1187: if (!&Apache::lonhtmlcommon::htmlareablocked() &&
1188: &Apache::lonhtmlcommon::htmlareabrowser()) {
1189: $initialize.=(<<FULLPAGE);
1.321 www 1190: <script type="text/javascript">
1.323 www 1191: $addbuttons
1192:
1.321 www 1193: HTMLArea.loadPlugin("FullPage");
1194:
1195: function initDocument() {
1.323 www 1196: var editor=new HTMLArea("filecont",config);
1.321 www 1197: editor.registerPlugin(FullPage);
1198: editor.generate();
1199: }
1200: </script>
1201: FULLPAGE
1.347 albertel 1202: } else {
1203: $initialize.=(<<FULLPAGE);
1204: <script type="text/javascript">
1205: $addbuttons
1206: function initDocument() {
1207: }
1208: </script>
1209: FULLPAGE
1210: }
1.321 www 1211: $result=~s/\<body([^\>]*)\>/\<body onload="initDocument()" $1\>/i;
1212: $xml_help=&Apache::loncommon::helpLatexCheatsheet();
1.274 albertel 1213: }
1214: my $cleanbut = '';
1.374 www 1215:
1.254 albertel 1216: my $titledisplay=&display_title();
1.280 www 1217: my %lt=&Apache::lonlocal::texthash('st' => 'Save this',
1218: 'vi' => 'View',
1219: 'ed' => 'Edit');
1.161 albertel 1220: my $buttons=(<<BUTTONS);
1.274 albertel 1221: $cleanbut
1.304 matthew 1222: <input type="submit" name="savethisfile" accesskey="s" value="$lt{'st'}" />
1223: <input type="submit" name="viewmode" accesskey="v" value="$lt{'vi'}" />
1.161 albertel 1224: BUTTONS
1.333 www 1225: $buttons.=&Apache::lonhtmlcommon::spelllink('xmledit','filecont');
1.338 albertel 1226: $buttons.=&Apache::lonhtmlcommon::htmlareaselectactive('filecont');
1.78 www 1227: my $editfooter=(<<ENDFOOTER);
1.321 www 1228: $initialize
1.78 www 1229: <hr />
1230: <a name="editsection" />
1.333 www 1231: <form method="post" name="xmledit">
1.240 albertel 1232: $xml_help
1.280 www 1233: <input type="hidden" name="editmode" value="$lt{'ed'}" />
1.170 www 1234: $buttons<br />
1.366 albertel 1235: <textarea style="width:100%" cols="80" rows="44" name="filecont" id="filecont">$filecontents</textarea>
1.170 www 1236: <br />$buttons
1.78 www 1237: <br />
1238: </form>
1.254 albertel 1239: $titledisplay
1.321 www 1240: </body>
1.78 www 1241: ENDFOOTER
1.147 albertel 1242: # $result=~s/(\<body[^\>]*\>)/$1$editheader/is;
1.78 www 1243: $result=~s/(\<\/body\>)/$editfooter/is;
1244: return $result;
1245: }
1246:
1.152 albertel 1247: sub get_target {
1.372 albertel 1248: my $viewgrades=&Apache::lonnet::allowed('vgr',$env{'request.course.id'});
1249: if ( $env{'request.state'} eq 'published') {
1250: if ( defined($env{'form.grade_target'})
1.152 albertel 1251: && ($viewgrades == 'F' )) {
1.372 albertel 1252: return ($env{'form.grade_target'});
1253: } elsif (defined($env{'form.grade_target'})) {
1254: if (($env{'form.grade_target'} eq 'web') ||
1255: ($env{'form.grade_target'} eq 'tex') ) {
1256: return $env{'form.grade_target'}
1.153 albertel 1257: } else {
1258: return 'web';
1259: }
1.152 albertel 1260: } else {
1261: return 'web';
1262: }
1.372 albertel 1263: } elsif ($env{'request.state'} eq 'construct') {
1264: if ( defined($env{'form.grade_target'})) {
1265: return ($env{'form.grade_target'});
1.152 albertel 1266: } else {
1267: return 'web';
1268: }
1269: } else {
1270: return 'web';
1271: }
1272: }
1273:
1.24 sakharuk 1274: sub handler {
1.255 sakharuk 1275: my $request=shift;
1276:
1277: my $target=&get_target();
1278:
1.372 albertel 1279: $Apache::lonxml::debug=$env{'user.debug'};
1.255 sakharuk 1280:
1.364 albertel 1281: &Apache::loncommon::content_type($request,'text/html');
1.255 sakharuk 1282: &Apache::loncommon::no_cache($request);
1.372 albertel 1283: if ($env{'request.state'} eq 'published') {
1.363 albertel 1284: $request->set_last_modified(&Apache::lonnet::metadata($request->uri,
1285: 'lastrevisiondate'));
1286: }
1.255 sakharuk 1287: $request->send_http_header;
1288:
1289: return OK if $request->header_only;
1.68 www 1290:
1291:
1.255 sakharuk 1292: my $file=&Apache::lonnet::filelocation("",$request->uri);
1.274 albertel 1293: my $filetype;
1294: if ($file =~ /\.sty$/) {
1295: $filetype='sty';
1296: } else {
1297: $filetype='html';
1298: }
1.78 www 1299: #
1300: # Edit action? Save file.
1301: #
1.372 albertel 1302: unless ($env{'request.state'} eq 'published') {
1.374 www 1303: if ($env{'form.savethisfile'}) {
1.372 albertel 1304: if (&storefile($file,$env{'form.filecont'})) {
1.309 albertel 1305: &Apache::lonxml::info("<font COLOR=\"#0000FF\">".
1306: &mt('Updated').": ".
1307: &Apache::lonlocal::locallocaltime(time).
1308: " </font>");
1.271 www 1309: }
1.255 sakharuk 1310: }
1311: }
1312: my %mystyle;
1313: my $result = '';
1314: my $filecontents=&Apache::lonnet::getfile($file);
1315: if ($filecontents eq -1) {
1.284 www 1316: my $bodytag=&Apache::loncommon::bodytag('File Error');
1317: my $fnf=&mt('File not found');
1.255 sakharuk 1318: $result=(<<ENDNOTFOUND);
1.78 www 1319: <html>
1320: <head>
1.284 www 1321: <title>$fnf</title>
1.78 www 1322: </head>
1.284 www 1323: $bodytag
1324: <b>$fnf: $file</b>
1.78 www 1325: </body>
1326: </html>
1327: ENDNOTFOUND
1.343 albertel 1328: $filecontents='';
1.372 albertel 1329: if ($env{'request.state'} ne 'published') {
1.274 albertel 1330: if ($filetype eq 'sty') {
1331: $filecontents=&createnewsty();
1332: } else {
1333: $filecontents=&createnewhtml();
1334: }
1.372 albertel 1335: $env{'form.editmode'}='Edit'; #force edit mode
1.255 sakharuk 1336: }
1337: } else {
1.372 albertel 1338: unless ($env{'request.state'} eq 'published') {
1.343 albertel 1339: if ($filecontents=~/BEGIN LON-CAPA Internal/) {
1340: &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.'));
1341: }
1.264 www 1342: #
1343: # we are in construction space, see if edit mode forced
1344: &Apache::loncommon::get_unprocessed_cgi
1345: ($ENV{'QUERY_STRING'},['editmode']);
1.255 sakharuk 1346: }
1.372 albertel 1347: if (!$env{'form.editmode'} || $env{'form.viewmode'}) {
1.255 sakharuk 1348: $result = &Apache::lonxml::xmlparse($request,$target,$filecontents,
1349: '',%mystyle);
1.368 albertel 1350: undef($Apache::lonhomework::parsing_a_task);
1.255 sakharuk 1351: }
1.147 albertel 1352: }
1.255 sakharuk 1353:
1.78 www 1354: #
1355: # Edit action? Insert editing commands
1356: #
1.372 albertel 1357: unless ($env{'request.state'} eq 'published') {
1358: if ($env{'form.editmode'} && (!($env{'form.viewmode'}))) {
1.255 sakharuk 1359: my $displayfile=$request->uri;
1360: $displayfile=~s/^\/[^\/]*//;
1.349 albertel 1361: my $bodytag='<body bgcolor="#FFFFFF">';
1.372 albertel 1362: if ($env{'environment.remote'} eq 'off') {
1.349 albertel 1363: $bodytag=&Apache::loncommon::bodytag();
1364: }
1365: $result='<html>'.$bodytag.
1.309 albertel 1366: &Apache::lonxml::message_location().'<h3>'.
1367: $displayfile.
1.255 sakharuk 1368: '</h3></body></html>';
1.274 albertel 1369: $result=&inserteditinfo($result,$filecontents,$filetype);
1.255 sakharuk 1370: }
1.147 albertel 1371: }
1.274 albertel 1372: if ($filetype eq 'html') { writeallows($request->uri); }
1373:
1.255 sakharuk 1374:
1.309 albertel 1375: &Apache::lonxml::add_messages(\$result);
1.255 sakharuk 1376: $request->print($result);
1377:
1378: return OK;
1.253 albertel 1379: }
1380:
1381: sub display_title {
1382: my $result;
1.372 albertel 1383: if ($env{'request.state'} eq 'construct') {
1.253 albertel 1384: my $title=&Apache::lonnet::gettitle();
1385: if (!defined($title) || $title eq '') {
1.372 albertel 1386: $title = $env{'request.filename'};
1.253 albertel 1387: $title = substr($title, rindex($title, '/') + 1);
1388: }
1389: $result = "<script type='text/javascript'>top.document.title = '$title - LON-CAPA Construction Space';</script>";
1390: }
1391: return $result;
1.24 sakharuk 1392: }
1.147 albertel 1393:
1.22 albertel 1394: sub debug {
1.298 albertel 1395: if ($Apache::lonxml::debug eq "1") {
1396: $|=1;
1.300 albertel 1397: my $request=$Apache::lonxml::request;
1398: if (!$request) { $request=Apache->request; }
1.314 albertel 1399: $request->print('<font size="-2"><pre>DEBUG:'.&HTML::Entities::encode($_[0],'<>&"')."</pre></font>\n");
1.346 albertel 1400: #&Apache::lonnet::logthis($_[0]);
1.298 albertel 1401: }
1.22 albertel 1402: }
1.49 albertel 1403:
1.348 albertel 1404: sub show_error_warn_msg {
1.372 albertel 1405: if ($env{'request.filename'} eq '/home/httpd/html/res/lib/templates/simpleproblem.problem' &&
1406: &Apache::lonnet::allowed('mdc',$env{'request.course.id'})) {
1.351 albertel 1407: return 1;
1408: }
1.348 albertel 1409: return (($Apache::lonxml::debug eq 1) ||
1.372 albertel 1410: ($env{'request.state'} eq 'construct') ||
1.348 albertel 1411: ($Apache::lonhomework::browse eq 'F'
1412: &&
1.372 albertel 1413: $env{'form.show_errors'} eq 'on'));
1.348 albertel 1414: }
1415:
1.22 albertel 1416: sub error {
1.336 albertel 1417: $errorcount++;
1.348 albertel 1418: if ( &show_error_warn_msg() ) {
1.336 albertel 1419: # If printing in construction space, put the error inside <pre></pre>
1420: push(@Apache::lonxml::error_messages,
1421: $Apache::lonxml::warnings_error_header.
1422: "<b>ERROR:</b>".join("<br />\n",@_)."<br />\n");
1423: $Apache::lonxml::warnings_error_header='';
1424: } else {
1425: my $errormsg;
1426: my ($symb)=&Apache::lonnet::symbread();
1427: if ( !$symb ) {
1428: #public or browsers
1429: $errormsg=&mt("An error occured while processing this resource. The author has been notified.");
1430: }
1431: #notify author
1.372 albertel 1432: &Apache::lonmsg::author_res_msg($env{'request.filename'},join('<br />',@_));
1.336 albertel 1433: #notify course
1.372 albertel 1434: if ( $symb && $env{'request.course.id'} ) {
1.336 albertel 1435: my (undef,%users)=&Apache::lonfeedback::decide_receiver(undef,0,1,1,1);
1.372 albertel 1436: my $declutter=&Apache::lonnet::declutter($env{'request.filename'});
1.336 albertel 1437: my @userlist;
1438: foreach (keys %users) {
1439: my ($user,$domain) = split(/:/, $_);
1440: push(@userlist,"$user\@$domain");
1441: &Apache::lonmsg::user_normal_msg($user,$domain,
1442: "Error [$declutter]",join('<br />',@_));
1443: }
1.372 albertel 1444: if ($env{'request.role.adv'}) {
1.336 albertel 1445: $errormsg=&mt("An error occured while processing this resource. The course personnel ([_1]) and the author have been notified.",join(', ',@userlist));
1446: } else {
1447: $errormsg=&mt("An error occured while processing this resource. The instructor has been notified.");
1448: }
1449: }
1450: push(@Apache::lonxml::error_messages,"<b>$errormsg</b> <br />");
1.52 albertel 1451: }
1.22 albertel 1452: }
1.49 albertel 1453:
1.22 albertel 1454: sub warning {
1.295 albertel 1455: $warningcount++;
1.261 albertel 1456:
1.372 albertel 1457: if ($env{'form.grade_target'} ne 'tex') {
1.348 albertel 1458: if ( &show_error_warn_msg() ) {
1.309 albertel 1459: push(@Apache::lonxml::warning_messages,
1460: $Apache::lonxml::warnings_error_header.
1461: "<b>W</b>ARNING<b>:</b>".join('<br />',@_)."<br />\n");
1.295 albertel 1462: $Apache::lonxml::warnings_error_header='';
1463: }
1464: }
1.309 albertel 1465: }
1466:
1467: sub info {
1.372 albertel 1468: if ($env{'form.grade_target'} ne 'tex'
1469: && $env{'request.state'} eq 'construct') {
1.309 albertel 1470: push(@Apache::lonxml::info_messages,join('<br />',@_)."<br />\n");
1471: }
1472: }
1473:
1474: sub message_location {
1475: return '__LONCAPA_INTERNAL_MESSAGE_LOCATION__';
1476: }
1477:
1478: sub add_messages {
1479: my ($msg)=@_;
1480: my $result=join(' ',
1481: @Apache::lonxml::info_messages,
1482: @Apache::lonxml::error_messages,
1483: @Apache::lonxml::warning_messages);
1484: undef(@Apache::lonxml::info_messages);
1485: undef(@Apache::lonxml::error_messages);
1486: undef(@Apache::lonxml::warning_messages);
1487: $$msg=~s/__LONCAPA_INTERNAL_MESSAGE_LOCATION__/$result/;
1488: $$msg=~s/__LONCAPA_INTERNAL_MESSAGE_LOCATION__//g;
1.83 albertel 1489: }
1490:
1491: sub get_param {
1.213 albertel 1492: my ($param,$parstack,$safeeval,$context,$case_insensitive) = @_;
1493: if ( ! $context ) { $context = -1; }
1494: my $args ='';
1495: if ( $#$parstack > (-2-$context) ) { $args=$$parstack[$context]; }
1.297 sakharuk 1496: if ( ! $Apache::lonxml::usestyle ) {
1497: $args=$Apache::lonxml::style_values.$args;
1498: }
1.213 albertel 1499: if ( ! $args ) { return undef; }
1500: if ( $case_insensitive ) {
1501: if ($args =~ s/(my \$)(\Q$param\E)(=\")/$1.lc($2).$3/ei) {
1502: return &Apache::run::run("{$args;".'return $'.$param.'}',
1503: $safeeval); #'
1504: } else {
1505: return undef;
1506: }
1507: } else {
1508: if ( $args =~ /my \$\Q$param\E=\"/ ) {
1509: return &Apache::run::run("{$args;".'return $'.$param.'}',
1510: $safeeval); #'
1511: } else {
1512: return undef;
1513: }
1514: }
1.22 albertel 1515: }
1516:
1.132 albertel 1517: sub get_param_var {
1.213 albertel 1518: my ($param,$parstack,$safeeval,$context,$case_insensitive) = @_;
1.132 albertel 1519: if ( ! $context ) { $context = -1; }
1520: my $args ='';
1521: if ( $#$parstack > (-2-$context) ) { $args=$$parstack[$context]; }
1.297 sakharuk 1522: if ( ! $Apache::lonxml::usestyle ) {
1523: $args=$Apache::lonxml::style_values.$args;
1524: }
1.230 albertel 1525: &Apache::lonxml::debug("Args are $args param is $param");
1.213 albertel 1526: if ($case_insensitive) {
1527: if (! ($args=~s/(my \$)(\Q$param\E)(=\")/$1.lc($2).$3/ei)) {
1528: return undef;
1529: }
1530: } elsif ( $args !~ /my \$\Q$param\E=\"/ ) { return undef; }
1.132 albertel 1531: my $value=&Apache::run::run("{$args;".'return $'.$param.'}',$safeeval); #'
1.230 albertel 1532: &Apache::lonxml::debug("first run is $value");
1.341 albertel 1533: if ($value =~ /^[\$\@\%][a-zA-Z_]\w*$/) {
1.230 albertel 1534: &Apache::lonxml::debug("doing second");
1535: my @result=&Apache::run::run("return $value",$safeeval,1);
1536: if (!defined($result[0])) {
1537: return $value
1538: } else {
1539: if (wantarray) { return @result; } else { return $result[0]; }
1540: }
1.132 albertel 1541: } else {
1542: return $value;
1543: }
1544: }
1545:
1.74 albertel 1546: sub register_insert {
1.75 albertel 1547: my @data = split /\n/, &Apache::lonnet::getfile('/home/httpd/lonTabs/insertlist.tab');
1.74 albertel 1548: my $i;
1.76 albertel 1549: my $tagnum=0;
1.74 albertel 1550: my @order;
1551: for ($i=0;$i < $#data; $i++) {
1552: my $line = $data[$i];
1553: if ( $line =~ /^\#/ || $line =~ /^\s*\n/) { next; }
1554: if ( $line =~ /TABLE/ ) { last; }
1.268 bowersj2 1555: my ($tag,$descrip,$color,$function,$show,$helpfile,$helpdesc) = split(/,/, $line);
1.135 albertel 1556: if ($tag) {
1557: $insertlist{"$tagnum.tag"} = $tag;
1558: $insertlist{"$tagnum.description"} = $descrip;
1559: $insertlist{"$tagnum.color"} = $color;
1560: $insertlist{"$tagnum.function"} = $function;
1561: if (!defined($show)) { $show='yes'; }
1562: $insertlist{"$tagnum.show"}= $show;
1.268 bowersj2 1563: $insertlist{"$tagnum.helpfile"} = $helpfile;
1564: $insertlist{"$tagnum.helpdesc"} = $helpdesc;
1.135 albertel 1565: $insertlist{"$tag.num"}=$tagnum;
1566: $tagnum++;
1567: }
1.74 albertel 1568: }
1.76 albertel 1569: $i++; #skipping TABLE line
1570: $tagnum = 0;
1.74 albertel 1571: for (;$i < $#data;$i++) {
1572: my $line = $data[$i];
1.76 albertel 1573: my ($mnemonic,@which) = split(/ +/,$line);
1574: my $tag = $insertlist{"$tagnum.tag"};
1.144 matthew 1575: for (my $j=0;$j <=$#which;$j++) {
1.74 albertel 1576: if ( $which[$j] eq 'Y' ) {
1.76 albertel 1577: if ($insertlist{"$j.show"} ne 'no') {
1578: push(@{ $insertlist{"$tag.which"} },$j);
1579: }
1.74 albertel 1580: }
1581: }
1.76 albertel 1582: $tagnum++;
1.74 albertel 1583: }
1584: }
1.98 albertel 1585:
1586: sub description {
1587: my ($token)=@_;
1.138 albertel 1588: my $tagnum;
1589: my $tag=$token->[1];
1590: foreach my $namespace (reverse @Apache::lonxml::namespace) {
1591: my $testtag=$namespace.'::'.$tag;
1592: $tagnum=$insertlist{"$testtag.num"};
1593: if (defined($tagnum)) { last; }
1594: }
1595: if (!defined ($tagnum)) { $tagnum=$Apache::lonxml::insertlist{"$tag.num"}; }
1596: return $insertlist{$tagnum.'.description'};
1.268 bowersj2 1597: }
1598:
1599: # Returns a list containing the help file, and the description
1600: sub helpinfo {
1601: my ($token)=@_;
1602: my $tagnum;
1603: my $tag=$token->[1];
1604: foreach my $namespace (reverse @Apache::lonxml::namespace) {
1605: my $testtag=$namespace.'::'.$tag;
1606: $tagnum=$insertlist{"$testtag.num"};
1607: if (defined($tagnum)) { last; }
1608: }
1609: if (!defined ($tagnum)) { $tagnum=$Apache::lonxml::insertlist{"$tag.num"}; }
1610: return ($insertlist{$tagnum.'.helpfile'}, $insertlist{$tagnum.'.helpdesc'});
1.98 albertel 1611: }
1.123 albertel 1612:
1613: # ----------------------------------------------------------------- whichuser
1614: # returns a list of $symb, $courseid, $domain, $name that is correct for
1615: # calls to lonnet functions for this setup.
1616: # - looks for form.grade_ parameters
1617: sub whichuser {
1.262 matthew 1618: my ($passedsymb)=@_;
1.245 albertel 1619: my ($symb,$courseid,$domain,$name,$publicuser);
1.372 albertel 1620: if (defined($env{'form.grade_symb'})) {
1.350 albertel 1621: my ($tmp_courseid)=
1622: &Apache::loncommon::get_env_multiple('form.grade_courseid');
1623: my $allowed=&Apache::lonnet::allowed('vgr',$tmp_courseid);
1624: if (!$allowed &&
1.372 albertel 1625: exists($env{'request.course.sec'}) &&
1626: $env{'request.course.sec'} !~ /^\s*$/) {
1.350 albertel 1627: $allowed=&Apache::lonnet::allowed('vgr',$tmp_courseid.
1.372 albertel 1628: '/'.$env{'request.course.sec'});
1.350 albertel 1629: }
1630: if ($allowed) {
1631: ($symb)=&Apache::loncommon::get_env_multiple('form.grade_symb');
1632: $courseid=$tmp_courseid;
1633: ($domain)=&Apache::loncommon::get_env_multiple('form.grade_domain');
1634: ($name)=&Apache::loncommon::get_env_multiple('form.grade_username');
1635: return ($symb,$courseid,$domain,$name,$publicuser);
1636: }
1637: }
1638: if (!$passedsymb) {
1639: $symb=&Apache::lonnet::symbread();
1.134 albertel 1640: } else {
1.350 albertel 1641: $symb=$passedsymb;
1642: }
1.372 albertel 1643: $courseid=$env{'request.course.id'};
1644: $domain=$env{'user.domain'};
1645: $name=$env{'user.name'};
1.350 albertel 1646: if ($name eq 'public' && $domain eq 'public') {
1.372 albertel 1647: if (!defined($env{'form.username'})) {
1648: $env{'form.username'}.=time.rand(10000000);
1.244 albertel 1649: }
1.372 albertel 1650: $name.=$env{'form.username'};
1.123 albertel 1651: }
1.245 albertel 1652: return ($symb,$courseid,$domain,$name,$publicuser);
1.123 albertel 1653: }
1654:
1.1 sakharuk 1655: 1;
1656: __END__
1.68 www 1657:
1658:
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