Annotation of loncom/xml/lonxml.pm, revision 1.370
1.2 sakharuk 1: # The LearningOnline Network with CAPA
1.3 sakharuk 2: # XML Parser Module
1.2 sakharuk 3: #
1.370 ! albertel 4: # $Id: lonxml.pm,v 1.369 2005/04/01 18:08:14 albertel Exp $
1.139 www 5: #
6: # Copyright Michigan State University Board of Trustees
7: #
8: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
9: #
10: # LON-CAPA is free software; you can redistribute it and/or modify
11: # it under the terms of the GNU General Public License as published by
12: # the Free Software Foundation; either version 2 of the License, or
13: # (at your option) any later version.
14: #
15: # LON-CAPA is distributed in the hope that it will be useful,
16: # but WITHOUT ANY WARRANTY; without even the implied warranty of
17: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18: # GNU General Public License for more details.
19: #
20: # You should have received a copy of the GNU General Public License
21: # along with LON-CAPA; if not, write to the Free Software
22: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23: #
24: # /home/httpd/html/adm/gpl.txt
25: #
26: # http://www.lon-capa.org/
27: #
28: # Copyright for TtHfunc and TtMfunc by Ian Hutchinson.
29: # TtHfunc and TtMfunc (the "Code") may be compiled and linked into
30: # binary executable programs or libraries distributed by the
31: # Michigan State University (the "Licensee"), but any binaries so
32: # distributed are hereby licensed only for use in the context
33: # of a program or computational system for which the Licensee is the
34: # primary author or distributor, and which performs substantial
35: # additional tasks beyond the translation of (La)TeX into HTML.
36: # The C source of the Code may not be distributed by the Licensee
37: # to any other parties under any circumstances.
38: #
1.316 albertel 39:
1.2 sakharuk 40:
1.4 albertel 41: package Apache::lonxml;
1.33 www 42: use vars
1.320 www 43: qw(@pwd @outputstack $redirection $import @extlinks $metamode $evaluate %insertlist @namespace $errorcount $warningcount @htmlareafields);
1.1 sakharuk 44: use strict;
1.167 albertel 45: use HTML::LCParser();
1.161 albertel 46: use HTML::TreeBuilder();
47: use HTML::Entities();
48: use Safe();
49: use Safe::Hole();
50: use Math::Cephes();
51: use Math::Random();
52: use Opcode();
1.271 www 53: use POSIX qw(strftime);
1.339 albertel 54: use Time::HiRes qw( gettimeofday tv_interval );
1.266 bowersj2 55:
1.72 albertel 56: sub register {
1.141 albertel 57: my ($space,@taglist) = @_;
58: foreach my $temptag (@taglist) {
59: push(@{ $Apache::lonxml::alltags{$temptag} },$space);
1.72 albertel 60: }
61: }
62:
1.141 albertel 63: sub deregister {
64: my ($space,@taglist) = @_;
65: foreach my $temptag (@taglist) {
66: my $tempspace = $Apache::lonxml::alltags{$temptag}[-1];
67: if ($tempspace eq $space) {
68: pop(@{ $Apache::lonxml::alltags{$temptag} });
69: }
70: }
1.142 albertel 71: #&printalltags();
1.141 albertel 72: }
73:
1.46 www 74: use Apache::Constants qw(:common);
1.161 albertel 75: use Apache::lontexconvert();
76: use Apache::style();
77: use Apache::run();
78: use Apache::londefdef();
79: use Apache::scripttag();
1.285 www 80: use Apache::languagetags();
1.161 albertel 81: use Apache::edit();
1.266 bowersj2 82: use Apache::inputtags();
83: use Apache::outputtags();
1.161 albertel 84: use Apache::lonnet();
85: use Apache::File();
86: use Apache::loncommon();
1.198 www 87: use Apache::lonfeedback();
1.200 www 88: use Apache::lonmsg();
1.217 matthew 89: use Apache::loncacc();
1.280 www 90: use Apache::lonlocal;
1.79 www 91:
1.72 albertel 92: #================================================== Main subroutine: xmlparse
93: #debugging control, to turn on debugging modify the correct handler
94: $Apache::lonxml::debug=0;
1.206 albertel 95:
96: # keeps count of the number of warnings and errors generated in a parse
97: $warningcount=0;
98: $errorcount=0;
1.72 albertel 99:
100: #path to the directory containing the file currently being processed
101: @pwd=();
102:
103: #these two are used for capturing a subset of the output for later processing,
104: #don't touch them directly use &startredirection and &endredirection
105: @outputstack = ();
106: $redirection = 0;
107:
108: #controls wheter the <import> tag actually does
109: $import = 1;
110: @extlinks=();
111:
112: # meta mode is a bit weird only some output is to be turned off
113: #<output> tag turns metamode off (defined in londefdef.pm)
114: $metamode = 0;
115:
116: # turns on and of run::evaluate actually derefencing var refs
117: $evaluate = 1;
1.7 albertel 118:
1.74 albertel 119: # data structure for eidt mode, determines what tags can go into what other tags
120: %insertlist=();
1.68 www 121:
1.99 albertel 122: # stores the list of active tag namespaces
1.76 albertel 123: @namespace=();
124:
1.99 albertel 125: # has the dynamic menu been updated to know about this resource
126: $Apache::lonxml::registered=0;
127:
1.172 albertel 128: # a pointer the the Apache request object
129: $Apache::lonxml::request='';
130:
1.216 sakharuk 131: # a problem number counter, and check on ether it is used
1.237 sakharuk 132: $Apache::lonxml::counter=1;
1.204 albertel 133: $Apache::lonxml::counter_changed=0;
134:
1.212 albertel 135: #internal check on whether to look at style defs
136: $Apache::lonxml::usestyle=1;
1.260 albertel 137:
138: #locations used to store the parameter string for style substitutions
139: $Apache::lonxml::style_values='';
140: $Apache::lonxml::style_end_values='';
1.212 albertel 141:
1.281 albertel 142: #array of ssi calls that need to occur after we are done parsing
143: @Apache::lonxml::ssi_info=();
144:
1.282 albertel 145: #should we do the postag variable interpolation
146: $Apache::lonxml::post_evaluate=1;
147:
1.295 albertel 148: #a header message to emit in the case of any generated warning or errors
149: $Apache::lonxml::warnings_error_header='';
150:
1.68 www 151: sub xmlbegin {
1.356 albertel 152: my ($style)=@_;
153: my $output='';
154: @htmlareafields=();
155: if ($ENV{'browser.mathml'}) {
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 $discussion;
183: &Apache::loncommon::get_unprocessed_cgi
184: ($ENV{'query_string'},['LONCAPA_INTERNAL_no_discussion']);
185: if (! exists($ENV{'form.LONCAPA_INTERNAL_no_discussion'}) ||
186: $ENV{'form.LONCAPA_INTERNAL_no_discussion'} ne 'true') {
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) {
253: $tuname=$ENV{'user.name'};
254: $tudom=$ENV{'user.domain'};
255: $tcrsid=$ENV{'request.course.id'};
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').': '.$tcrsid.
291: '<br />'.&mt('Course').': '.$ENV{'course.'.$tcrsid.'.description'}.
292: '<br />'.&mt('DocID').': '.$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 $headerstring='';
301: if (($ENV{'browser.os'} eq 'mac') && (!$ENV{'browser.mathml'})) {
1.248 albertel 302: $headerstring.=
1.343 albertel 303: '<meta Content-Type="text/html; charset=x-mac-roman" />';
1.263 albertel 304: } elsif (!$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:
1.208 albertel 333: if ($ENV{'request.course.id'} && $ENV{'request.state'} ne 'construct') {
1.178 www 334: my $bodytext=
335: $ENV{'course.'.$ENV{'request.course.id'}.'.default_xml_style'};
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,$styletext));
343: }
344: }
345: }
1.292 sakharuk 346: } elsif ($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 = ();
1.23 albertel 356: my $pwd=$ENV{'request.filename'};
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: $safeeval,\%style_for_target);
1.255 sakharuk 373:
1.125 www 374: if ($ENV{'request.uri'}) {
375: &writeallows($ENV{'request.uri'});
376: }
1.281 albertel 377: &do_registered_ssi();
1.204 albertel 378: if ($Apache::lonxml::counter_changed) { &store_counter() }
1.361 www 379: if ($ENV{'form.return_only_error_and_warning_counts'}) {
380: return "$errorcount:$warningcount";
381: }
1.3 sakharuk 382: return $finaloutput;
1.106 www 383: }
384:
385: sub htmlclean {
1.107 www 386: my ($raw,$full)=@_;
1.354 www 387: # Take care of CRLF etc
1.106 www 388:
1.354 www 389: $raw=~s/\r\f/\n/gs; $raw=~s/\f\r/\n/gs;
390: $raw=~s/\r\n/\n/gs; $raw=~s/\n\r/\n/gs;
391: $raw=~s/\f/\n/gs; $raw=~s/\r/\n/gs;
392: $raw=~s/\&\#10\;/\n/gs; $raw=~s/\&\#13\;/\n/gs;
393:
394: # Generate empty tags, remove wrong end tags
395: $raw=~s/\<(br|hr|img|meta|allow|basefont)([^\>\/]*?)\>/\<$1$2 \/\>/gis;
396: $raw=~s/\<\/(br|hr|img|meta|allow|basefont)\>//gis;
1.107 www 397: unless ($full) {
1.354 www 398: $raw=~s/\<[\/]*(body|head|html)\>//gis;
1.107 www 399: }
1.354 www 400: # Make standard tags lowercase
401: foreach ('html','body','head','meta','h1','h2','h3','h4','b','i','m',
402: 'table','tr','td','th','p','br','hr','img','embed','font',
1.355 www 403: 'a','strong','center','title','basefont','li','ol','ul',
404: 'input','select','form','option','script','pre') {
1.354 www 405: $raw=~s/\<$_\s*\>/\<$_\>/gis;
406: $raw=~s/\<\/$_\s*\>/<\/$_\>/gis;
407: $raw=~s/\<$_\s([^\>]*)\>/<$_ $1\>/gis;
408: }
409: return $raw;
1.15 albertel 410: }
411:
1.191 albertel 412: sub latex_special_symbols {
1.272 albertel 413: my ($string,$where)=@_;
1.235 sakharuk 414: if ($where eq 'header') {
1.272 albertel 415: $string =~ s/(\\|_|\^)/ /g;
1.311 albertel 416: $string =~ s/(\$|%|\{|\})/\\$1/g;
1.273 sakharuk 417: $string =~ s/_/ /g;
1.311 albertel 418: $string=&Apache::lonprintout::character_chart($string);
419: # any & or # leftover should be safe to just escape
420: $string=~s/([^\\])\&/$1\\\&/g;
421: $string=~s/([^\\])\#/$1\\\#/g;
1.229 sakharuk 422: } else {
1.312 albertel 423: $string=~s/\\/\\ensuremath{\\backslash}/g;
1.367 albertel 424: $string=~s/\\\%|\%/\\\%/g;
425: $string=~s/\\{|{/\\{/g;
426: $string=~s/\\}|}/\\}/g;
427: $string=~s/\\\$|\$/\\\$/g;
428: $string=~s/\\\_|\_/\\\_/g;
1.313 albertel 429: $string=~s/([^\\]|^)(\~|\^)/$1\\$2\\strut /g;
1.310 sakharuk 430: $string=~s/(>|<)/\\ensuremath\{$1\}/g; #more or less
1.311 albertel 431: $string=&Apache::lonprintout::character_chart($string);
432: # any & or # leftover should be safe to just escape
1.367 albertel 433: $string=~s/\\\&|\&/\\\&/g;
434: $string=~s/\\\#|\#/\\\#/g;
1.332 sakharuk 435: $string=~s/\|/\$\\mid\$/g;
1.310 sakharuk 436: #single { or } How to escape?
1.229 sakharuk 437: }
1.272 albertel 438: return $string;
1.188 sakharuk 439: }
440:
1.101 albertel 441: sub inner_xmlparse {
442: my ($target,$stack,$parstack,$pars,$safeeval,$style_for_target)=@_;
443: my $finaloutput = '';
444: my $result;
445: my $token;
1.258 albertel 446: my $dontpop=0;
1.101 albertel 447: while ( $#$pars > -1 ) {
448: while ($token = $$pars['-1']->get_token) {
1.261 albertel 449: if (($token->[0] eq 'T') || ($token->[0] eq 'C') ) {
1.101 albertel 450: if ($metamode<1) {
1.190 albertel 451: my $text=$token->[1];
1.193 albertel 452: if ($token->[0] eq 'C' && $target eq 'tex') {
1.239 sakharuk 453: $text = '';
454: # $text = '%'.$text."\n";
1.182 sakharuk 455: }
1.190 albertel 456: $result.=$text;
1.101 albertel 457: }
1.261 albertel 458: } elsif (($token->[0] eq 'D')) {
459: if ($metamode<1 && $target eq 'web') {
460: my $text=$token->[1];
461: $result.=$text;
462: }
1.101 albertel 463: } elsif ($token->[0] eq 'PI') {
1.261 albertel 464: if ($metamode<1 && $target eq 'web') {
1.101 albertel 465: $result=$token->[2];
466: }
467: } elsif ($token->[0] eq 'S') {
1.140 albertel 468: # add tag to stack
1.101 albertel 469: push (@$stack,$token->[1]);
470: # add parameters list to another stack
471: push (@$parstack,&parstring($token));
1.140 albertel 472: &increasedepth($token);
1.212 albertel 473: if ($Apache::lonxml::usestyle &&
474: exists($$style_for_target{$token->[1]})) {
475: $Apache::lonxml::usestyle=0;
476: my $string=$$style_for_target{$token->[1]}.
477: '<LONCAPA_INTERNAL_TURN_STYLE_ON />';
478: &Apache::lonxml::newparser($pars,\$string);
1.257 albertel 479: $Apache::lonxml::style_values=$$parstack[-1];
1.259 albertel 480: $Apache::lonxml::style_end_values=$$parstack[-1];
1.101 albertel 481: } else {
482: $result = &callsub("start_$token->[1]", $target, $token, $stack,
483: $parstack, $pars, $safeeval, $style_for_target);
1.140 albertel 484: }
1.101 albertel 485: } elsif ($token->[0] eq 'E') {
1.212 albertel 486: if ($Apache::lonxml::usestyle &&
487: exists($$style_for_target{'/'."$token->[1]"})) {
488: $Apache::lonxml::usestyle=0;
489: my $string=$$style_for_target{'/'.$token->[1]}.
1.258 albertel 490: '<LONCAPA_INTERNAL_TURN_STYLE_ON end="'.$token->[1].'" />';
1.212 albertel 491: &Apache::lonxml::newparser($pars,\$string);
1.259 albertel 492: $Apache::lonxml::style_values=$Apache::lonxml::style_end_values;
493: $Apache::lonxml::style_end_values='';
1.258 albertel 494: $dontpop=1;
1.101 albertel 495: } else {
1.258 albertel 496: #clear out any tags that didn't end
497: while ($token->[1] ne $$stack['-1'] && ($#$stack > -1)) {
498: my $lasttag=$$stack[-1];
1.317 albertel 499: if ($token->[1] =~ /^\Q$lasttag\E$/i) {
1.258 albertel 500: &Apache::lonxml::warning('Using tag </'.$token->[1].'> on line '.$token->[3].' as end tag to <'.$$stack[-1].'>');
501: last;
502: } else {
503: &Apache::lonxml::warning('Found tag </'.$token->[1].'> on line '.$token->[3].' when looking for </'.$$stack[-1].'> in file');
504: &end_tag($stack,$parstack,$token);
505: }
506: }
507: $result = &callsub("end_$token->[1]", $target, $token, $stack,
508: $parstack, $pars,$safeeval, $style_for_target);
1.101 albertel 509: }
510: } else {
511: &Apache::lonxml::error("Unknown token event :$token->[0]:$token->[1]:");
512: }
513: #evaluate variable refs in result
1.282 albertel 514: if ($Apache::lonxml::post_evaluate &&$result ne "") {
1.257 albertel 515: my $extras;
516: if (!$Apache::lonxml::usestyle) {
517: $extras=$Apache::lonxml::style_values;
518: }
1.101 albertel 519: if ( $#$parstack > -1 ) {
1.257 albertel 520: $result=&Apache::run::evaluate($result,$safeeval,$extras.$$parstack[-1]);
1.101 albertel 521: } else {
1.257 albertel 522: $result= &Apache::run::evaluate($result,$safeeval,$extras);
1.101 albertel 523: }
1.163 albertel 524: }
1.282 albertel 525: $Apache::lonxml::post_evaluate=1;
526:
1.190 albertel 527: if (($token->[0] eq 'T') || ($token->[0] eq 'C') || ($token->[0] eq 'D') ) {
1.249 albertel 528: #Style file definitions should be correct
1.250 albertel 529: if ($target eq 'tex' && ($Apache::lonxml::usestyle)) {
1.311 albertel 530: $result=&latex_special_symbols($result);
1.249 albertel 531: }
1.190 albertel 532: }
533:
1.169 albertel 534: if ($Apache::lonxml::redirection) {
535: $Apache::lonxml::outputstack['-1'] .= $result;
536: } else {
537: $finaloutput.=$result;
538: }
539: $result = '';
540:
1.258 albertel 541: if ($token->[0] eq 'E' && !$dontpop) {
1.101 albertel 542: &end_tag($stack,$parstack,$token);
543: }
1.258 albertel 544: $dontpop=0;
1.224 albertel 545: }
1.212 albertel 546: if ($#$pars > -1) {
547: pop @$pars;
548: pop @Apache::lonxml::pwd;
549: }
1.101 albertel 550: }
551:
552: # if ($target eq 'meta') {
553: # $finaloutput.=&endredirection;
554: # }
555:
1.169 albertel 556:
1.101 albertel 557: if (($ENV{'QUERY_STRING'}) && ($target eq 'web')) {
558: $finaloutput=&afterburn($finaloutput);
1.216 sakharuk 559: }
1.101 albertel 560: return $finaloutput;
561: }
1.67 www 562:
1.318 matthew 563: ##
564: ## Looks to see if there is a subroutine defined for this tag. If so, call it,
565: ## otherwise do not call it as we do not know what it is.
566: ##
1.7 albertel 567: sub callsub {
1.84 albertel 568: my ($sub,$target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.7 albertel 569: my $currentstring='';
1.72 albertel 570: my $nodefault;
1.7 albertel 571: {
1.59 albertel 572: my $sub1;
1.7 albertel 573: no strict 'refs';
1.68 www 574: my $tag=$token->[1];
1.236 www 575: # get utterly rid of extended html tags
576: if ($tag=~/^x\-/i) { return ''; }
1.141 albertel 577: my $space=$Apache::lonxml::alltags{$tag}[-1];
1.68 www 578: if (!$space) {
1.141 albertel 579: $tag=~tr/A-Z/a-z/;
1.68 www 580: $sub=~tr/A-Z/a-z/;
1.141 albertel 581: $space=$Apache::lonxml::alltags{$tag}[-1]
1.68 www 582: }
1.97 albertel 583:
584: my $deleted=0;
585: $Apache::lonxml::curdepth=join('_',@Apache::lonxml::depthcounter);
586: if (($token->[0] eq 'S') && ($target eq 'modified')) {
587: $deleted=&Apache::edit::handle_delete($space,$target,$token,$tagstack,
588: $parstack,$parser,$safeeval,
589: $style);
590: }
591: if (!$deleted) {
592: if ($space) {
1.220 albertel 593: #&Apache::lonxml::debug("Calling sub $sub in $space $metamode");
1.97 albertel 594: $sub1="$space\:\:$sub";
595: ($currentstring,$nodefault) = &$sub1($target,$token,$tagstack,
596: $parstack,$parser,$safeeval,
597: $style);
598: } else {
1.318 matthew 599: if ($target eq 'tex') {
600: # throw away tag name
601: return '';
602: }
1.220 albertel 603: #&Apache::lonxml::debug("NOT Calling sub $sub in $space $metamode");
1.97 albertel 604: if ($metamode <1) {
605: if (defined($token->[4]) && ($metamode < 1)) {
606: $currentstring = $token->[4];
607: } else {
608: $currentstring = $token->[2];
609: }
1.62 sakharuk 610: }
1.7 albertel 611: }
1.97 albertel 612: # &Apache::lonxml::debug("nodefalt:$nodefault:");
613: if ($currentstring eq '' && $nodefault eq '') {
614: if ($target eq 'edit') {
1.220 albertel 615: #&Apache::lonxml::debug("doing default edit for $token->[1]");
1.97 albertel 616: if ($token->[0] eq 'S') {
617: $currentstring = &Apache::edit::tag_start($target,$token);
618: } elsif ($token->[0] eq 'E') {
619: $currentstring = &Apache::edit::tag_end($target,$token);
620: }
621: } elsif ($target eq 'modified') {
622: if ($token->[0] eq 'S') {
623: $currentstring = $token->[4];
624: $currentstring.=&Apache::edit::handle_insert();
1.210 www 625: } elsif ($token->[0] eq 'E') {
626: $currentstring = $token->[2];
627: $currentstring.=&Apache::edit::handle_insertafter($token->[1]);
1.97 albertel 628: } else {
629: $currentstring = $token->[2];
630: }
1.72 albertel 631: }
632: }
1.7 albertel 633: }
634: use strict 'refs';
635: }
636: return $currentstring;
1.82 ng 637: }
638:
1.96 albertel 639: sub setup_globals {
1.172 albertel 640: my ($request,$target)=@_;
641: $Apache::lonxml::request=$request;
1.99 albertel 642: $Apache::lonxml::registered = 0;
1.325 www 643: @Apache::lonxml::htmlareafields=();
1.205 www 644: $errorcount=0;
645: $warningcount=0;
1.207 albertel 646: $Apache::lonxml::default_homework_loaded=0;
1.212 albertel 647: $Apache::lonxml::usestyle=1;
1.204 albertel 648: &init_counter();
1.101 albertel 649: @Apache::lonxml::pwd=();
1.124 albertel 650: @Apache::lonxml::extlinks=();
1.281 albertel 651: @Apache::lonxml::ssi_info=();
1.282 albertel 652: $Apache::lonxml::post_evaluate=1;
1.295 albertel 653: $Apache::lonxml::warnings_error_header='';
1.96 albertel 654: if ($target eq 'meta') {
655: $Apache::lonxml::redirection = 0;
656: $Apache::lonxml::metamode = 1;
657: $Apache::lonxml::evaluate = 1;
658: $Apache::lonxml::import = 0;
1.129 albertel 659: } elsif ($target eq 'answer') {
660: $Apache::lonxml::redirection = 0;
661: $Apache::lonxml::metamode = 1;
662: $Apache::lonxml::evaluate = 1;
663: $Apache::lonxml::import = 1;
1.96 albertel 664: } elsif ($target eq 'grade') {
665: &startredirection;
666: $Apache::lonxml::metamode = 0;
667: $Apache::lonxml::evaluate = 1;
668: $Apache::lonxml::import = 1;
669: } elsif ($target eq 'modified') {
670: $Apache::lonxml::redirection = 0;
671: $Apache::lonxml::metamode = 0;
672: $Apache::lonxml::evaluate = 0;
673: $Apache::lonxml::import = 0;
674: } elsif ($target eq 'edit') {
675: $Apache::lonxml::redirection = 0;
676: $Apache::lonxml::metamode = 0;
677: $Apache::lonxml::evaluate = 0;
678: $Apache::lonxml::import = 0;
1.163 albertel 679: } elsif ($target eq 'analyze') {
680: $Apache::lonxml::redirection = 0;
681: $Apache::lonxml::metamode = 0;
682: $Apache::lonxml::evaluate = 1;
683: $Apache::lonxml::import = 1;
1.96 albertel 684: } else {
685: $Apache::lonxml::redirection = 0;
686: $Apache::lonxml::metamode = 0;
687: $Apache::lonxml::evaluate = 1;
688: $Apache::lonxml::import = 1;
689: }
690: }
691:
1.82 ng 692: sub init_safespace {
693: my ($target,$safeeval,$safehole,$safeinit) = @_;
694: $safeeval->permit("entereval");
695: $safeeval->permit(":base_math");
696: $safeeval->permit("sort");
1.286 albertel 697: $safeeval->permit("time");
1.82 ng 698: $safeeval->deny(":base_io");
1.102 albertel 699: $safehole->wrap(\&Apache::scripttag::xmlparse,$safeeval,'&xmlparse');
1.251 albertel 700: $safehole->wrap(\&Apache::outputtags::multipart,$safeeval,'&multipart');
1.82 ng 701: $safehole->wrap(\&Apache::lonnet::EXT,$safeeval,'&EXT');
1.324 albertel 702: $safehole->wrap(\&Apache::chemresponse::chem_standard_order,$safeeval,
703: '&chem_standard_order');
1.369 albertel 704: $safehole->wrap(\&Apache::response::check_status,$safeeval,'&check_status');
1.324 albertel 705:
1.82 ng 706: $safehole->wrap(\&Math::Cephes::asin,$safeeval,'&asin');
707: $safehole->wrap(\&Math::Cephes::acos,$safeeval,'&acos');
708: $safehole->wrap(\&Math::Cephes::atan,$safeeval,'&atan');
709: $safehole->wrap(\&Math::Cephes::sinh,$safeeval,'&sinh');
710: $safehole->wrap(\&Math::Cephes::cosh,$safeeval,'&cosh');
711: $safehole->wrap(\&Math::Cephes::tanh,$safeeval,'&tanh');
712: $safehole->wrap(\&Math::Cephes::asinh,$safeeval,'&asinh');
713: $safehole->wrap(\&Math::Cephes::acosh,$safeeval,'&acosh');
714: $safehole->wrap(\&Math::Cephes::atanh,$safeeval,'&atanh');
715: $safehole->wrap(\&Math::Cephes::erf,$safeeval,'&erf');
716: $safehole->wrap(\&Math::Cephes::erfc,$safeeval,'&erfc');
717: $safehole->wrap(\&Math::Cephes::j0,$safeeval,'&j0');
718: $safehole->wrap(\&Math::Cephes::j1,$safeeval,'&j1');
719: $safehole->wrap(\&Math::Cephes::jn,$safeeval,'&jn');
720: $safehole->wrap(\&Math::Cephes::jv,$safeeval,'&jv');
721: $safehole->wrap(\&Math::Cephes::y0,$safeeval,'&y0');
722: $safehole->wrap(\&Math::Cephes::y1,$safeeval,'&y1');
723: $safehole->wrap(\&Math::Cephes::yn,$safeeval,'&yn');
724: $safehole->wrap(\&Math::Cephes::yv,$safeeval,'&yv');
1.215 albertel 725:
726: $safehole->wrap(\&Math::Cephes::bdtr ,$safeeval,'&bdtr' );
727: $safehole->wrap(\&Math::Cephes::bdtrc ,$safeeval,'&bdtrc' );
728: $safehole->wrap(\&Math::Cephes::bdtri ,$safeeval,'&bdtri' );
729: $safehole->wrap(\&Math::Cephes::btdtr ,$safeeval,'&btdtr' );
730: $safehole->wrap(\&Math::Cephes::chdtr ,$safeeval,'&chdtr' );
731: $safehole->wrap(\&Math::Cephes::chdtrc,$safeeval,'&chdtrc');
732: $safehole->wrap(\&Math::Cephes::chdtri,$safeeval,'&chdtri');
733: $safehole->wrap(\&Math::Cephes::fdtr ,$safeeval,'&fdtr' );
734: $safehole->wrap(\&Math::Cephes::fdtrc ,$safeeval,'&fdtrc' );
735: $safehole->wrap(\&Math::Cephes::fdtri ,$safeeval,'&fdtri' );
736: $safehole->wrap(\&Math::Cephes::gdtr ,$safeeval,'&gdtr' );
737: $safehole->wrap(\&Math::Cephes::gdtrc ,$safeeval,'&gdtrc' );
738: $safehole->wrap(\&Math::Cephes::nbdtr ,$safeeval,'&nbdtr' );
739: $safehole->wrap(\&Math::Cephes::nbdtrc,$safeeval,'&nbdtrc');
740: $safehole->wrap(\&Math::Cephes::nbdtri,$safeeval,'&nbdtri');
741: $safehole->wrap(\&Math::Cephes::ndtr ,$safeeval,'&ndtr' );
742: $safehole->wrap(\&Math::Cephes::ndtri ,$safeeval,'&ndtri' );
743: $safehole->wrap(\&Math::Cephes::pdtr ,$safeeval,'&pdtr' );
744: $safehole->wrap(\&Math::Cephes::pdtrc ,$safeeval,'&pdtrc' );
745: $safehole->wrap(\&Math::Cephes::pdtri ,$safeeval,'&pdtri' );
746: $safehole->wrap(\&Math::Cephes::stdtr ,$safeeval,'&stdtr' );
747: $safehole->wrap(\&Math::Cephes::stdtri,$safeeval,'&stdtri');
748:
749: # $safehole->wrap(\&Math::Cephes::new_fract,$safeeval,'&new_fract');
750: # $safehole->wrap(\&Math::Cephes::radd,$safeeval,'&radd');
751: # $safehole->wrap(\&Math::Cephes::rsub,$safeeval,'&rsub');
752: # $safehole->wrap(\&Math::Cephes::rmul,$safeeval,'&rmul');
753: # $safehole->wrap(\&Math::Cephes::rdiv,$safeeval,'&rdiv');
754: # $safehole->wrap(\&Math::Cephes::euclid,$safeeval,'&euclid');
755:
1.91 ng 756: $safehole->wrap(\&Math::Random::random_beta,$safeeval,'&math_random_beta');
757: $safehole->wrap(\&Math::Random::random_chi_square,$safeeval,'&math_random_chi_square');
758: $safehole->wrap(\&Math::Random::random_exponential,$safeeval,'&math_random_exponential');
759: $safehole->wrap(\&Math::Random::random_f,$safeeval,'&math_random_f');
760: $safehole->wrap(\&Math::Random::random_gamma,$safeeval,'&math_random_gamma');
761: $safehole->wrap(\&Math::Random::random_multivariate_normal,$safeeval,'&math_random_multivariate_normal');
762: $safehole->wrap(\&Math::Random::random_multinomial,$safeeval,'&math_random_multinomial');
763: $safehole->wrap(\&Math::Random::random_noncentral_chi_square,$safeeval,'&math_random_noncentral_chi_square');
764: $safehole->wrap(\&Math::Random::random_noncentral_f,$safeeval,'&math_random_noncentral_f');
765: $safehole->wrap(\&Math::Random::random_normal,$safeeval,'&math_random_normal');
766: $safehole->wrap(\&Math::Random::random_permutation,$safeeval,'&math_random_permutation');
1.93 ng 767: $safehole->wrap(\&Math::Random::random_permuted_index,$safeeval,'&math_random_permuted_index');
1.91 ng 768: $safehole->wrap(\&Math::Random::random_uniform,$safeeval,'&math_random_uniform');
769: $safehole->wrap(\&Math::Random::random_poisson,$safeeval,'&math_random_poisson');
770: $safehole->wrap(\&Math::Random::random_uniform_integer,$safeeval,'&math_random_uniform_integer');
771: $safehole->wrap(\&Math::Random::random_negative_binomial,$safeeval,'&math_random_negative_binomial');
772: $safehole->wrap(\&Math::Random::random_binomial,$safeeval,'&math_random_binomial');
773: $safehole->wrap(\&Math::Random::random_seed_from_phrase,$safeeval,'&random_seed_from_phrase');
774: $safehole->wrap(\&Math::Random::random_set_seed_from_phrase,$safeeval,'&random_set_seed_from_phrase');
775: $safehole->wrap(\&Math::Random::random_get_seed,$safeeval,'&random_get_seed');
776: $safehole->wrap(\&Math::Random::random_set_seed,$safeeval,'&random_set_seed');
1.305 albertel 777: $safehole->wrap(\&Apache::lonxml::error,$safeeval,'&LONCAPA_INTERNAL_ERROR');
1.311 albertel 778: $safehole->wrap(\&Apache::lonxml::debug,$safeeval,'&LONCAPA_INTERNAL_DEBUG');
1.322 albertel 779: $safehole->wrap(\&Apache::caparesponse::get_sigrange,$safeeval,'&LONCAPA_INTERNAL_get_sigrange');
1.91 ng 780:
1.82 ng 781: #need to inspect this class of ops
782: # $safeeval->deny(":base_orig");
1.331 albertel 783: $safeeval->permit("require");
1.91 ng 784: $safeinit .= ';$external::target="'.$target.'";';
1.121 albertel 785: my $rndseed;
1.123 albertel 786: my ($symb,$courseid,$domain,$name) = &Apache::lonxml::whichuser();
787: $rndseed=&Apache::lonnet::rndseed($symb,$courseid,$domain,$name);
1.319 albertel 788: $safeinit .= ';$external::randomseed="'.$rndseed.'";';
1.249 albertel 789: &Apache::lonxml::debug("Setting rndseed to $rndseed");
1.82 ng 790: &Apache::run::run($safeinit,$safeeval);
1.303 albertel 791:
1.207 albertel 792: }
793:
794: sub default_homework_load {
795: my ($safeeval)=@_;
796: &Apache::lonxml::debug('Loading default_homework');
797: my $default=&Apache::lonnet::getfile('/home/httpd/html/res/adm/includes/default_homework.lcpm');
1.241 albertel 798: if ($default eq -1) {
1.207 albertel 799: &Apache::lonxml::error("<b>Unable to find <i>default_homework.lcpm</i></b>");
800: } else {
801: &Apache::run::run($default,$safeeval);
802: $Apache::lonxml::default_homework_loaded=1;
803: }
1.17 albertel 804: }
805:
1.358 albertel 806: {
807: my $alarm_depth;
808: sub init_alarm {
809: alarm(0);
810: $alarm_depth=0;
811: }
812:
813: sub start_alarm {
814: if ($alarm_depth<1) {
815: my $old=alarm($Apache::lonnet::perlvar{'lonScriptTimeout'});
816: if ($old) {
817: &Apache::lonxml::error("Cancelled an alarm of $old, this shouldn't occur.");
818: }
819: }
820: $alarm_depth++;
821: }
822:
823: sub end_alarm {
824: $alarm_depth--;
825: if ($alarm_depth<1) { alarm(0); }
826: }
827: }
1.328 albertel 828: my $metamode_was;
1.55 albertel 829: sub startredirection {
1.328 albertel 830: if (!$Apache::lonxml::redirection) {
831: $metamode_was=$Apache::lonxml::metamode;
832: }
833: $Apache::lonxml::metamode=0;
834: $Apache::lonxml::redirection++;
835: push (@Apache::lonxml::outputstack, '');
1.55 albertel 836: }
837:
838: sub endredirection {
1.328 albertel 839: if (!$Apache::lonxml::redirection) {
840: &Apache::lonxml::error("Endredirection was called, before a startredirection, perhaps you have unbalanced tags. Some debuging information:".join ":",caller);
841: return '';
842: }
843: $Apache::lonxml::redirection--;
844: if (!$Apache::lonxml::redirection) {
845: $Apache::lonxml::metamode=$metamode_was;
846: }
847: pop @Apache::lonxml::outputstack;
1.97 albertel 848: }
849:
850: sub end_tag {
851: my ($tagstack,$parstack,$token)=@_;
852: pop(@$tagstack);
853: pop(@$parstack);
854: &decreasedepth($token);
1.55 albertel 855: }
856:
1.17 albertel 857: sub initdepth {
858: @Apache::lonxml::depthcounter=();
859: $Apache::lonxml::depth=-1;
860: $Apache::lonxml::olddepth=-1;
861: }
862:
1.339 albertel 863: my @timers;
864: my $lasttime;
1.17 albertel 865: sub increasedepth {
1.19 albertel 866: my ($token) = @_;
1.17 albertel 867: $Apache::lonxml::depth++;
868: $Apache::lonxml::depthcounter[$Apache::lonxml::depth]++;
869: if ($Apache::lonxml::depthcounter[$Apache::lonxml::depth]==1) {
870: $Apache::lonxml::olddepth=$Apache::lonxml::depth;
871: }
1.340 albertel 872: my $time;
873: if ($Apache::lonxml::debug eq "1") {
874: push(@timers,[&gettimeofday()]);
875: $time=&tv_interval($lasttime);
876: $lasttime=[&gettimeofday()];
877: }
1.339 albertel 878: my $spacing=' 'x($Apache::lonxml::depth-1);
1.42 albertel 879: my $curdepth=join('_',@Apache::lonxml::depthcounter);
1.339 albertel 880: &Apache::lonxml::debug("s$spacing$Apache::lonxml::depth : $Apache::lonxml::olddepth : $curdepth : $token->[1] : $time : \n");
1.54 albertel 881: #print "<br />s $Apache::lonxml::depth : $Apache::lonxml::olddepth : $curdepth : $token->[1]\n";
1.17 albertel 882: }
883:
884: sub decreasedepth {
1.19 albertel 885: my ($token) = @_;
1.17 albertel 886: $Apache::lonxml::depth--;
1.36 albertel 887: if ($Apache::lonxml::depth<$Apache::lonxml::olddepth-1) {
888: $#Apache::lonxml::depthcounter--;
889: $Apache::lonxml::olddepth=$Apache::lonxml::depth+1;
890: }
1.43 albertel 891: if ( $Apache::lonxml::depth < -1) {
1.280 www 892: &Apache::lonxml::warning(&mt("Missing tags, unable to properly run file."));
1.43 albertel 893: $Apache::lonxml::depth='-1';
894: }
1.340 albertel 895: my ($timer,$time);
896: if ($Apache::lonxml::debug eq "1") {
897: $timer=pop(@timers);
898: $time=&tv_interval($lasttime);
899: $lasttime=[&gettimeofday()];
900: }
1.339 albertel 901: my $spacing=' 'x$Apache::lonxml::depth;
1.42 albertel 902: my $curdepth=join('_',@Apache::lonxml::depthcounter);
1.339 albertel 903: &Apache::lonxml::debug("e$spacing$Apache::lonxml::depth : $Apache::lonxml::olddepth : $curdepth : $token->[1] : $time : ".&tv_interval($timer)."\n");
1.54 albertel 904: #print "<br />e $Apache::lonxml::depth : $Apache::lonxml::olddepth : $token->[1] : $curdepth\n";
1.1 sakharuk 905: }
1.19 albertel 906:
1.180 albertel 907: sub get_all_text_unbalanced {
1.190 albertel 908: #there is a copy of this in lonpublisher.pm
1.326 albertel 909: my($tag,$pars)= @_;
910: my $token;
911: my $result='';
912: $tag='<'.$tag.'>';
913: while ($token = $$pars[-1]->get_token) {
914: if (($token->[0] eq 'T')||($token->[0] eq 'C')||($token->[0] eq 'D')) {
915: $result.=$token->[1];
916: } elsif ($token->[0] eq 'PI') {
917: $result.=$token->[2];
918: } elsif ($token->[0] eq 'S') {
919: $result.=$token->[4];
920: } elsif ($token->[0] eq 'E') {
921: $result.=$token->[2];
922: }
923: if ($result =~ /\Q$tag\E/is) {
924: ($result,my $redo)=$result =~ /(.*)\Q$tag\E(.*)/is;
925: #&Apache::lonxml::debug('Got a winner with leftovers ::'.$2);
926: #&Apache::lonxml::debug('Result is :'.$1);
927: $redo=$tag.$redo;
928: &Apache::lonxml::newparser($pars,\$redo);
929: last;
930: }
931: }
932: return $result
1.204 albertel 933: }
934:
935: sub increment_counter {
1.247 albertel 936: my ($increment) = @_;
1.289 sakharuk 937: if (defined($increment) && $increment gt 0) {
938: $Apache::lonxml::counter+=$increment;
939: } else {
940: $Apache::lonxml::counter++;
1.247 albertel 941: }
1.289 sakharuk 942: $Apache::lonxml::counter_changed=1;
1.204 albertel 943: }
944:
945: sub init_counter {
946: if (defined($ENV{'form.counter'})) {
947: $Apache::lonxml::counter=$ENV{'form.counter'};
1.247 albertel 948: $Apache::lonxml::counter_changed=0;
1.237 sakharuk 949: } else {
1.204 albertel 950: $Apache::lonxml::counter=1;
1.247 albertel 951: $Apache::lonxml::counter_changed=1;
1.204 albertel 952: }
953: }
954:
955: sub store_counter {
956: &Apache::lonnet::appenv(('form.counter' => $Apache::lonxml::counter));
957: return '';
1.180 albertel 958: }
959:
1.19 albertel 960: sub get_all_text {
1.270 albertel 961: my($tag,$pars,$style)= @_;
962: my $gotfullstack=1;
963: if (ref($pars) ne 'ARRAY') {
964: $gotfullstack=0;
965: $pars=[$pars];
966: }
967: if (ref($style) ne 'HASH') {
968: $style={};
969: }
970: my $depth=0;
971: my $token;
972: my $result='';
973: if ( $tag =~ m:^/: ) {
974: my $tag=substr($tag,1);
975: #&Apache::lonxml::debug("have:$tag:");
976: my $top_empty=0;
977: while (($depth >=0) && ($#$pars > -1) && (!$top_empty)) {
978: while (($depth >=0) && ($token = $$pars[-1]->get_token)) {
979: #&Apache::lonxml::debug("e token:$token->[0]:$depth:$token->[1]:".$#$pars.":".$#Apache::lonxml::pwd);
980: if (($token->[0] eq 'T')||($token->[0] eq 'C')||($token->[0] eq 'D')) {
981: $result.=$token->[1];
982: } elsif ($token->[0] eq 'PI') {
983: $result.=$token->[2];
984: } elsif ($token->[0] eq 'S') {
1.316 albertel 985: if ($token->[1] =~ /^\Q$tag\E$/i) { $depth++; }
986: if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_ON$/) { $Apache::lonxml::usestyle=1; }
987: if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_OFF$/) { $Apache::lonxml::usestyle=0; }
1.270 albertel 988: $result.=$token->[4];
989: } elsif ($token->[0] eq 'E') {
1.316 albertel 990: if ( $token->[1] =~ /^\Q$tag\E$/i) { $depth--; }
1.270 albertel 991: #skip sending back the last end tag
1.283 albertel 992: if ($depth == 0 && exists($$style{'/'.$token->[1]}) && $Apache::lonxml::usestyle) {
1.270 albertel 993: my $string=
994: '<LONCAPA_INTERNAL_TURN_STYLE_OFF end="yes" />'.
995: $$style{'/'.$token->[1]}.
996: $token->[2].
997: '<LONCAPA_INTERNAL_TURN_STYLE_ON />';
998: &Apache::lonxml::newparser($pars,\$string);
999: #&Apache::lonxml::debug("reParsing $string");
1000: next;
1001: }
1002: if ($depth > -1) {
1003: $result.=$token->[2];
1004: } else {
1005: $$pars[-1]->unget_token($token);
1006: }
1007: }
1008: }
1009: if (($depth >=0) && ($#$pars == 0) ) { $top_empty=1; }
1010: if (($depth >=0) && ($#$pars > 0) ) {
1011: pop(@$pars);
1012: pop(@Apache::lonxml::pwd);
1013: }
1014: }
1015: if ($top_empty && $depth >= 0) {
1016: #never found the end tag ran out of text, throw error send back blank
1017: &error('Never found end tag for <'.$tag.
1018: '> current string <pre>'.
1.314 albertel 1019: &HTML::Entities::encode($result,'<>&"').
1.270 albertel 1020: '</pre>');
1021: if ($gotfullstack) {
1022: my $newstring='</'.$tag.'>'.$result;
1023: &Apache::lonxml::newparser($pars,\$newstring);
1024: }
1025: $result='';
1026: }
1027: } else {
1028: while ($#$pars > -1) {
1029: while ($token = $$pars[-1]->get_token) {
1030: #&Apache::lonxml::debug("s token:$token->[0]:$depth:$token->[1]");
1031: if (($token->[0] eq 'T')||($token->[0] eq 'C')||
1032: ($token->[0] eq 'D')) {
1033: $result.=$token->[1];
1034: } elsif ($token->[0] eq 'PI') {
1035: $result.=$token->[2];
1036: } elsif ($token->[0] eq 'S') {
1.316 albertel 1037: if ( $token->[1] =~ /^\Q$tag\E$/i) {
1.270 albertel 1038: $$pars[-1]->unget_token($token); last;
1039: } else {
1040: $result.=$token->[4];
1041: }
1.316 albertel 1042: if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_ON$/) { $Apache::lonxml::usestyle=1; }
1043: if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_OFF$/) { $Apache::lonxml::usestyle=0; }
1.270 albertel 1044: } elsif ($token->[0] eq 'E') {
1045: $result.=$token->[2];
1046: }
1047: }
1048: if (($#$pars > 0) ) {
1049: pop(@$pars);
1050: pop(@Apache::lonxml::pwd);
1051: } else { last; }
1052: }
1053: }
1054: #&Apache::lonxml::debug("Exit:$result:");
1055: return $result
1.19 albertel 1056: }
1057:
1.23 albertel 1058: sub newparser {
1059: my ($parser,$contentref,$dir) = @_;
1.167 albertel 1060: push (@$parser,HTML::LCParser->new($contentref));
1.365 albertel 1061: $$parser[-1]->xml_mode(1);
1062: $$parser[-1]->marked_sections(1);
1.23 albertel 1063: if ( $dir eq '' ) {
1064: push (@Apache::lonxml::pwd, $Apache::lonxml::pwd[$#Apache::lonxml::pwd]);
1065: } else {
1066: push (@Apache::lonxml::pwd, $dir);
1067: }
1068: }
1.1 sakharuk 1069:
1.8 albertel 1070: sub parstring {
1071: my ($token) = @_;
1072: my $temp='';
1.142 albertel 1073: foreach (@{$token->[3]}) {
1.35 www 1074: unless ($_=~/\W/) {
1.42 albertel 1075: my $val=$token->[2]->{$_};
1.231 albertel 1076: $val =~ s/([\%\@\\\"\'])/\\$1/g;
1.342 albertel 1077: $val =~ s/(\$[^{a-zA-Z_])/\\$1/g;
1.346 albertel 1078: $val =~ s/(\$)$/\\$1/;
1.51 albertel 1079: #if ($val =~ m/^[\%\@]/) { $val="\\".$val; }
1.267 sakharuk 1080: $temp .= "my \$$_=\"$val\";";
1.20 albertel 1081: }
1.142 albertel 1082: }
1.8 albertel 1083: return $temp;
1084: }
1.22 albertel 1085:
1.34 www 1086: sub writeallows {
1.126 www 1087: unless ($#extlinks>=0) { return; }
1.34 www 1088: my $thisurl='/res/'.&Apache::lonnet::declutter(shift);
1.111 www 1089: if ($ENV{'httpref.'.$thisurl}) {
1090: $thisurl=$ENV{'httpref.'.$thisurl};
1091: }
1.34 www 1092: my $thisdir=$thisurl;
1093: $thisdir=~s/\/[^\/]+$//;
1094: my %httpref=();
1.142 albertel 1095: foreach (@extlinks) {
1.34 www 1096: $httpref{'httpref.'.
1.125 www 1097: &Apache::lonnet::hreflocation($thisdir,$_)}=$thisurl;
1.142 albertel 1098: }
1.126 www 1099: @extlinks=();
1.34 www 1100: &Apache::lonnet::appenv(%httpref);
1101: }
1102:
1.281 albertel 1103: sub register_ssi {
1104: my ($url,%form)=@_;
1105: push (@Apache::lonxml::ssi_info,{'url'=>$url,'form'=>\%form});
1106: return '';
1107: }
1108:
1109: sub do_registered_ssi {
1110: foreach my $info (@Apache::lonxml::ssi_info) {
1111: my %form=%{ $info->{'form'}};
1112: my $url=$info->{'url'};
1113: &Apache::lonnet::ssi($url,%form);
1114: }
1115: }
1.66 www 1116: #
1117: # Afterburner handles anchors, highlights and links
1118: #
1119: sub afterburn {
1120: my $result=shift;
1.154 albertel 1121: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
1122: ['highlight','anchor','link']);
1.66 www 1123: if ($ENV{'form.highlight'}) {
1.142 albertel 1124: foreach (split(/\,/,$ENV{'form.highlight'})) {
1.66 www 1125: my $anchorname=$_;
1126: my $matchthis=$anchorname;
1127: $matchthis=~s/\_+/\\s\+/g;
1.317 albertel 1128: $result=~s/(\Q$matchthis\E)/\<font color=\"red\"\>$1\<\/font\>/gs;
1.142 albertel 1129: }
1.66 www 1130: }
1131: if ($ENV{'form.link'}) {
1.142 albertel 1132: foreach (split(/\,/,$ENV{'form.link'})) {
1.66 www 1133: my ($anchorname,$linkurl)=split(/\>/,$_);
1134: my $matchthis=$anchorname;
1135: $matchthis=~s/\_+/\\s\+/g;
1.317 albertel 1136: $result=~s/(\Q$matchthis\E)/\<a href=\"$linkurl\"\>$1\<\/a\>/gs;
1.142 albertel 1137: }
1.66 www 1138: }
1139: if ($ENV{'form.anchor'}) {
1140: my $anchorname=$ENV{'form.anchor'};
1141: my $matchthis=$anchorname;
1142: $matchthis=~s/\_+/\\s\+/g;
1.317 albertel 1143: $result=~s/(\Q$matchthis\E)/\<a name=\"$anchorname\"\>$1\<\/a\>/s;
1.66 www 1144: $result.=(<<"ENDSCRIPT");
1.226 albertel 1145: <script type="text/javascript">
1.66 www 1146: document.location.hash='$anchorname';
1147: </script>
1148: ENDSCRIPT
1149: }
1150: return $result;
1151: }
1152:
1.79 www 1153: sub storefile {
1154: my ($file,$contents)=@_;
1.290 albertel 1155: &Apache::lonnet::correct_line_ends(\$contents);
1.79 www 1156: if (my $fh=Apache::File->new('>'.$file)) {
1157: print $fh $contents;
1158: $fh->close();
1.271 www 1159: return 1;
1.147 albertel 1160: } else {
1.271 www 1161: &warning("Unable to save file $file");
1162: return 0;
1.79 www 1163: }
1164: }
1165:
1.151 albertel 1166: sub createnewhtml {
1.321 www 1167: my $title=&mt('Title of document goes here');
1168: my $body=&mt('Body of document goes here');
1169: my $filecontents=(<<SIMPLECONTENT);
1170: <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml/11/DTD/xhtml11.dtd">
1.78 www 1171: <html>
1172: <head>
1.321 www 1173: <title>$title</title>
1.78 www 1174: </head>
1175: <body bgcolor="#FFFFFF">
1.321 www 1176: $body
1.78 www 1177: </body>
1178: </html>
1179: SIMPLECONTENT
1.321 www 1180: return $filecontents;
1.151 albertel 1181: }
1182:
1.274 albertel 1183: sub createnewsty {
1184: my $filecontents=(<<SIMPLECONTENT);
1185: <definetag name="">
1186: <render>
1187: <web></web>
1188: <tex></tex>
1189: </render>
1190: </definetag>
1191: SIMPLECONTENT
1192: return $filecontents;
1193: }
1194:
1.147 albertel 1195:
1.151 albertel 1196: sub inserteditinfo {
1.274 albertel 1197: my ($result,$filecontents,$filetype)=@_;
1.314 albertel 1198: $filecontents = &HTML::Entities::encode($filecontents,'<>&"');
1.147 albertel 1199: # my $editheader='<a href="#editsection">Edit below</a><hr />';
1.274 albertel 1200: my $xml_help = '';
1.321 www 1201: my $initialize='';
1.274 albertel 1202: if ($filetype eq 'html') {
1.323 www 1203: my $addbuttons=&Apache::lonhtmlcommon::htmlareaaddbuttons();
1.333 www 1204: $initialize=&Apache::lonhtmlcommon::htmlareaheaders().
1.347 albertel 1205: &Apache::lonhtmlcommon::spellheader();
1206: if (!&Apache::lonhtmlcommon::htmlareablocked() &&
1207: &Apache::lonhtmlcommon::htmlareabrowser()) {
1208: $initialize.=(<<FULLPAGE);
1.321 www 1209: <script type="text/javascript">
1.323 www 1210: $addbuttons
1211:
1.321 www 1212: HTMLArea.loadPlugin("FullPage");
1213:
1214: function initDocument() {
1.323 www 1215: var editor=new HTMLArea("filecont",config);
1.321 www 1216: editor.registerPlugin(FullPage);
1217: editor.generate();
1218: }
1219: </script>
1220: FULLPAGE
1.347 albertel 1221: } else {
1222: $initialize.=(<<FULLPAGE);
1223: <script type="text/javascript">
1224: $addbuttons
1225: function initDocument() {
1226: }
1227: </script>
1228: FULLPAGE
1229: }
1.321 www 1230: $result=~s/\<body([^\>]*)\>/\<body onload="initDocument()" $1\>/i;
1231: $xml_help=&Apache::loncommon::helpLatexCheatsheet();
1.274 albertel 1232: }
1233: my $cleanbut = '';
1234: if ($filetype eq 'html') {
1.280 www 1235: $cleanbut='<input type="submit" name="attemptclean" value="'.
1236: &mt('Save and then attempt to clean HTML').'" />';
1.274 albertel 1237: }
1.254 albertel 1238: my $titledisplay=&display_title();
1.280 www 1239: my %lt=&Apache::lonlocal::texthash('st' => 'Save this',
1240: 'vi' => 'View',
1241: 'ed' => 'Edit');
1.161 albertel 1242: my $buttons=(<<BUTTONS);
1.274 albertel 1243: $cleanbut
1.304 matthew 1244: <input type="submit" name="savethisfile" accesskey="s" value="$lt{'st'}" />
1245: <input type="submit" name="viewmode" accesskey="v" value="$lt{'vi'}" />
1.161 albertel 1246: BUTTONS
1.333 www 1247: $buttons.=&Apache::lonhtmlcommon::spelllink('xmledit','filecont');
1.338 albertel 1248: $buttons.=&Apache::lonhtmlcommon::htmlareaselectactive('filecont');
1.78 www 1249: my $editfooter=(<<ENDFOOTER);
1.321 www 1250: $initialize
1.78 www 1251: <hr />
1252: <a name="editsection" />
1.333 www 1253: <form method="post" name="xmledit">
1.240 albertel 1254: $xml_help
1.280 www 1255: <input type="hidden" name="editmode" value="$lt{'ed'}" />
1.170 www 1256: $buttons<br />
1.366 albertel 1257: <textarea style="width:100%" cols="80" rows="44" name="filecont" id="filecont">$filecontents</textarea>
1.170 www 1258: <br />$buttons
1.78 www 1259: <br />
1260: </form>
1.254 albertel 1261: $titledisplay
1.321 www 1262: </body>
1.78 www 1263: ENDFOOTER
1.147 albertel 1264: # $result=~s/(\<body[^\>]*\>)/$1$editheader/is;
1.78 www 1265: $result=~s/(\<\/body\>)/$editfooter/is;
1266: return $result;
1267: }
1268:
1.152 albertel 1269: sub get_target {
1270: my $viewgrades=&Apache::lonnet::allowed('vgr',$ENV{'request.course.id'});
1271: if ( $ENV{'request.state'} eq 'published') {
1272: if ( defined($ENV{'form.grade_target'})
1273: && ($viewgrades == 'F' )) {
1274: return ($ENV{'form.grade_target'});
1.153 albertel 1275: } elsif (defined($ENV{'form.grade_target'})) {
1276: if (($ENV{'form.grade_target'} eq 'web') ||
1277: ($ENV{'form.grade_target'} eq 'tex') ) {
1278: return $ENV{'form.grade_target'}
1279: } else {
1280: return 'web';
1281: }
1.152 albertel 1282: } else {
1283: return 'web';
1284: }
1285: } elsif ($ENV{'request.state'} eq 'construct') {
1286: if ( defined($ENV{'form.grade_target'})) {
1287: return ($ENV{'form.grade_target'});
1288: } else {
1289: return 'web';
1290: }
1291: } else {
1292: return 'web';
1293: }
1294: }
1295:
1.24 sakharuk 1296: sub handler {
1.255 sakharuk 1297: my $request=shift;
1298:
1299: my $target=&get_target();
1300:
1.258 albertel 1301: $Apache::lonxml::debug=$ENV{'user.debug'};
1.255 sakharuk 1302:
1.364 albertel 1303: &Apache::loncommon::content_type($request,'text/html');
1.255 sakharuk 1304: &Apache::loncommon::no_cache($request);
1.363 albertel 1305: if ($ENV{'request.state'} eq 'published') {
1306: $request->set_last_modified(&Apache::lonnet::metadata($request->uri,
1307: 'lastrevisiondate'));
1308: }
1.255 sakharuk 1309: $request->send_http_header;
1310:
1311: return OK if $request->header_only;
1.68 www 1312:
1313:
1.255 sakharuk 1314: my $file=&Apache::lonnet::filelocation("",$request->uri);
1.274 albertel 1315: my $filetype;
1316: if ($file =~ /\.sty$/) {
1317: $filetype='sty';
1318: } else {
1319: $filetype='html';
1320: }
1.78 www 1321: #
1322: # Edit action? Save file.
1323: #
1.255 sakharuk 1324: unless ($ENV{'request.state'} eq 'published') {
1325: if (($ENV{'form.savethisfile'}) || ($ENV{'form.attemptclean'})) {
1.271 www 1326: if (&storefile($file,$ENV{'form.filecont'})) {
1.309 albertel 1327: &Apache::lonxml::info("<font COLOR=\"#0000FF\">".
1328: &mt('Updated').": ".
1329: &Apache::lonlocal::locallocaltime(time).
1330: " </font>");
1.271 www 1331: }
1.255 sakharuk 1332: }
1333: }
1334: my %mystyle;
1335: my $result = '';
1336: my $filecontents=&Apache::lonnet::getfile($file);
1337: if ($filecontents eq -1) {
1.284 www 1338: my $bodytag=&Apache::loncommon::bodytag('File Error');
1339: my $fnf=&mt('File not found');
1.255 sakharuk 1340: $result=(<<ENDNOTFOUND);
1.78 www 1341: <html>
1342: <head>
1.284 www 1343: <title>$fnf</title>
1.78 www 1344: </head>
1.284 www 1345: $bodytag
1346: <b>$fnf: $file</b>
1.78 www 1347: </body>
1348: </html>
1349: ENDNOTFOUND
1.343 albertel 1350: $filecontents='';
1.255 sakharuk 1351: if ($ENV{'request.state'} ne 'published') {
1.274 albertel 1352: if ($filetype eq 'sty') {
1353: $filecontents=&createnewsty();
1354: } else {
1355: $filecontents=&createnewhtml();
1356: }
1.255 sakharuk 1357: $ENV{'form.editmode'}='Edit'; #force edit mode
1358: }
1359: } else {
1360: unless ($ENV{'request.state'} eq 'published') {
1.343 albertel 1361: if ($filecontents=~/BEGIN LON-CAPA Internal/) {
1362: &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.'));
1363: }
1364:
1.255 sakharuk 1365: if ($ENV{'form.attemptclean'}) {
1366: $filecontents=&htmlclean($filecontents,1);
1367: }
1.264 www 1368: #
1369: # we are in construction space, see if edit mode forced
1370: &Apache::loncommon::get_unprocessed_cgi
1371: ($ENV{'QUERY_STRING'},['editmode']);
1.255 sakharuk 1372: }
1373: if (!$ENV{'form.editmode'} || $ENV{'form.viewmode'}) {
1374: $result = &Apache::lonxml::xmlparse($request,$target,$filecontents,
1375: '',%mystyle);
1.368 albertel 1376: undef($Apache::lonhomework::parsing_a_task);
1.255 sakharuk 1377: }
1.147 albertel 1378: }
1.255 sakharuk 1379:
1.78 www 1380: #
1381: # Edit action? Insert editing commands
1382: #
1.255 sakharuk 1383: unless ($ENV{'request.state'} eq 'published') {
1384: if ($ENV{'form.editmode'} && (!($ENV{'form.viewmode'}))) {
1385: my $displayfile=$request->uri;
1386: $displayfile=~s/^\/[^\/]*//;
1.349 albertel 1387: my $bodytag='<body bgcolor="#FFFFFF">';
1388: if ($ENV{'environment.remote'} eq 'off') {
1389: $bodytag=&Apache::loncommon::bodytag();
1390: }
1391: $result='<html>'.$bodytag.
1.309 albertel 1392: &Apache::lonxml::message_location().'<h3>'.
1393: $displayfile.
1.255 sakharuk 1394: '</h3></body></html>';
1.274 albertel 1395: $result=&inserteditinfo($result,$filecontents,$filetype);
1.255 sakharuk 1396: }
1.147 albertel 1397: }
1.274 albertel 1398: if ($filetype eq 'html') { writeallows($request->uri); }
1399:
1.255 sakharuk 1400:
1.309 albertel 1401: &Apache::lonxml::add_messages(\$result);
1.255 sakharuk 1402: $request->print($result);
1403:
1404: return OK;
1.253 albertel 1405: }
1406:
1407: sub display_title {
1408: my $result;
1409: if ($ENV{'request.state'} eq 'construct') {
1410: my $title=&Apache::lonnet::gettitle();
1411: if (!defined($title) || $title eq '') {
1412: $title = $ENV{'request.filename'};
1413: $title = substr($title, rindex($title, '/') + 1);
1414: }
1415: $result = "<script type='text/javascript'>top.document.title = '$title - LON-CAPA Construction Space';</script>";
1416: }
1417: return $result;
1.24 sakharuk 1418: }
1.147 albertel 1419:
1.22 albertel 1420: sub debug {
1.298 albertel 1421: if ($Apache::lonxml::debug eq "1") {
1422: $|=1;
1.300 albertel 1423: my $request=$Apache::lonxml::request;
1424: if (!$request) { $request=Apache->request; }
1.314 albertel 1425: $request->print('<font size="-2"><pre>DEBUG:'.&HTML::Entities::encode($_[0],'<>&"')."</pre></font>\n");
1.346 albertel 1426: #&Apache::lonnet::logthis($_[0]);
1.298 albertel 1427: }
1.22 albertel 1428: }
1.49 albertel 1429:
1.348 albertel 1430: sub show_error_warn_msg {
1.351 albertel 1431: if ($ENV{'request.filename'} eq '/home/httpd/html/res/lib/templates/simpleproblem.problem' &&
1432: &Apache::lonnet::allowed('mdc',$ENV{'request.course.id'})) {
1433: return 1;
1434: }
1.348 albertel 1435: return (($Apache::lonxml::debug eq 1) ||
1436: ($ENV{'request.state'} eq 'construct') ||
1437: ($Apache::lonhomework::browse eq 'F'
1438: &&
1439: $ENV{'form.show_errors'} eq 'on'));
1440: }
1441:
1.22 albertel 1442: sub error {
1.336 albertel 1443: $errorcount++;
1.348 albertel 1444: if ( &show_error_warn_msg() ) {
1.336 albertel 1445: # If printing in construction space, put the error inside <pre></pre>
1446: push(@Apache::lonxml::error_messages,
1447: $Apache::lonxml::warnings_error_header.
1448: "<b>ERROR:</b>".join("<br />\n",@_)."<br />\n");
1449: $Apache::lonxml::warnings_error_header='';
1450: } else {
1451: my $errormsg;
1452: my ($symb)=&Apache::lonnet::symbread();
1453: if ( !$symb ) {
1454: #public or browsers
1455: $errormsg=&mt("An error occured while processing this resource. The author has been notified.");
1456: }
1457: #notify author
1458: &Apache::lonmsg::author_res_msg($ENV{'request.filename'},join('<br />',@_));
1459: #notify course
1460: if ( $symb && $ENV{'request.course.id'} ) {
1461: my (undef,%users)=&Apache::lonfeedback::decide_receiver(undef,0,1,1,1);
1462: my $declutter=&Apache::lonnet::declutter($ENV{'request.filename'});
1463: my @userlist;
1464: foreach (keys %users) {
1465: my ($user,$domain) = split(/:/, $_);
1466: push(@userlist,"$user\@$domain");
1467: &Apache::lonmsg::user_normal_msg($user,$domain,
1468: "Error [$declutter]",join('<br />',@_));
1469: }
1470: if ($ENV{'request.role.adv'}) {
1471: $errormsg=&mt("An error occured while processing this resource. The course personnel ([_1]) and the author have been notified.",join(', ',@userlist));
1472: } else {
1473: $errormsg=&mt("An error occured while processing this resource. The instructor has been notified.");
1474: }
1475: }
1476: push(@Apache::lonxml::error_messages,"<b>$errormsg</b> <br />");
1.52 albertel 1477: }
1.22 albertel 1478: }
1.49 albertel 1479:
1.22 albertel 1480: sub warning {
1.295 albertel 1481: $warningcount++;
1.261 albertel 1482:
1.295 albertel 1483: if ($ENV{'form.grade_target'} ne 'tex') {
1.348 albertel 1484: if ( &show_error_warn_msg() ) {
1.300 albertel 1485: my $request=$Apache::lonxml::request;
1486: if (!$request) { $request=Apache->request; }
1.309 albertel 1487: push(@Apache::lonxml::warning_messages,
1488: $Apache::lonxml::warnings_error_header.
1489: "<b>W</b>ARNING<b>:</b>".join('<br />',@_)."<br />\n");
1.295 albertel 1490: $Apache::lonxml::warnings_error_header='';
1491: }
1492: }
1.309 albertel 1493: }
1494:
1495: sub info {
1496: if ($ENV{'form.grade_target'} ne 'tex'
1497: && $ENV{'request.state'} eq 'construct') {
1498: push(@Apache::lonxml::info_messages,join('<br />',@_)."<br />\n");
1499: }
1500: }
1501:
1502: sub message_location {
1503: return '__LONCAPA_INTERNAL_MESSAGE_LOCATION__';
1504: }
1505:
1506: sub add_messages {
1507: my ($msg)=@_;
1508: my $result=join(' ',
1509: @Apache::lonxml::info_messages,
1510: @Apache::lonxml::error_messages,
1511: @Apache::lonxml::warning_messages);
1512: undef(@Apache::lonxml::info_messages);
1513: undef(@Apache::lonxml::error_messages);
1514: undef(@Apache::lonxml::warning_messages);
1515: $$msg=~s/__LONCAPA_INTERNAL_MESSAGE_LOCATION__/$result/;
1516: $$msg=~s/__LONCAPA_INTERNAL_MESSAGE_LOCATION__//g;
1.83 albertel 1517: }
1518:
1519: sub get_param {
1.213 albertel 1520: my ($param,$parstack,$safeeval,$context,$case_insensitive) = @_;
1521: if ( ! $context ) { $context = -1; }
1522: my $args ='';
1523: if ( $#$parstack > (-2-$context) ) { $args=$$parstack[$context]; }
1.297 sakharuk 1524: if ( ! $Apache::lonxml::usestyle ) {
1525: $args=$Apache::lonxml::style_values.$args;
1526: }
1.213 albertel 1527: if ( ! $args ) { return undef; }
1528: if ( $case_insensitive ) {
1529: if ($args =~ s/(my \$)(\Q$param\E)(=\")/$1.lc($2).$3/ei) {
1530: return &Apache::run::run("{$args;".'return $'.$param.'}',
1531: $safeeval); #'
1532: } else {
1533: return undef;
1534: }
1535: } else {
1536: if ( $args =~ /my \$\Q$param\E=\"/ ) {
1537: return &Apache::run::run("{$args;".'return $'.$param.'}',
1538: $safeeval); #'
1539: } else {
1540: return undef;
1541: }
1542: }
1.22 albertel 1543: }
1544:
1.132 albertel 1545: sub get_param_var {
1.213 albertel 1546: my ($param,$parstack,$safeeval,$context,$case_insensitive) = @_;
1.132 albertel 1547: if ( ! $context ) { $context = -1; }
1548: my $args ='';
1549: if ( $#$parstack > (-2-$context) ) { $args=$$parstack[$context]; }
1.297 sakharuk 1550: if ( ! $Apache::lonxml::usestyle ) {
1551: $args=$Apache::lonxml::style_values.$args;
1552: }
1.230 albertel 1553: &Apache::lonxml::debug("Args are $args param is $param");
1.213 albertel 1554: if ($case_insensitive) {
1555: if (! ($args=~s/(my \$)(\Q$param\E)(=\")/$1.lc($2).$3/ei)) {
1556: return undef;
1557: }
1558: } elsif ( $args !~ /my \$\Q$param\E=\"/ ) { return undef; }
1.132 albertel 1559: my $value=&Apache::run::run("{$args;".'return $'.$param.'}',$safeeval); #'
1.230 albertel 1560: &Apache::lonxml::debug("first run is $value");
1.341 albertel 1561: if ($value =~ /^[\$\@\%][a-zA-Z_]\w*$/) {
1.230 albertel 1562: &Apache::lonxml::debug("doing second");
1563: my @result=&Apache::run::run("return $value",$safeeval,1);
1564: if (!defined($result[0])) {
1565: return $value
1566: } else {
1567: if (wantarray) { return @result; } else { return $result[0]; }
1568: }
1.132 albertel 1569: } else {
1570: return $value;
1571: }
1572: }
1573:
1.74 albertel 1574: sub register_insert {
1.75 albertel 1575: my @data = split /\n/, &Apache::lonnet::getfile('/home/httpd/lonTabs/insertlist.tab');
1.74 albertel 1576: my $i;
1.76 albertel 1577: my $tagnum=0;
1.74 albertel 1578: my @order;
1579: for ($i=0;$i < $#data; $i++) {
1580: my $line = $data[$i];
1581: if ( $line =~ /^\#/ || $line =~ /^\s*\n/) { next; }
1582: if ( $line =~ /TABLE/ ) { last; }
1.268 bowersj2 1583: my ($tag,$descrip,$color,$function,$show,$helpfile,$helpdesc) = split(/,/, $line);
1.135 albertel 1584: if ($tag) {
1585: $insertlist{"$tagnum.tag"} = $tag;
1586: $insertlist{"$tagnum.description"} = $descrip;
1587: $insertlist{"$tagnum.color"} = $color;
1588: $insertlist{"$tagnum.function"} = $function;
1589: if (!defined($show)) { $show='yes'; }
1590: $insertlist{"$tagnum.show"}= $show;
1.268 bowersj2 1591: $insertlist{"$tagnum.helpfile"} = $helpfile;
1592: $insertlist{"$tagnum.helpdesc"} = $helpdesc;
1.135 albertel 1593: $insertlist{"$tag.num"}=$tagnum;
1594: $tagnum++;
1595: }
1.74 albertel 1596: }
1.76 albertel 1597: $i++; #skipping TABLE line
1598: $tagnum = 0;
1.74 albertel 1599: for (;$i < $#data;$i++) {
1600: my $line = $data[$i];
1.76 albertel 1601: my ($mnemonic,@which) = split(/ +/,$line);
1602: my $tag = $insertlist{"$tagnum.tag"};
1.144 matthew 1603: for (my $j=0;$j <=$#which;$j++) {
1.74 albertel 1604: if ( $which[$j] eq 'Y' ) {
1.76 albertel 1605: if ($insertlist{"$j.show"} ne 'no') {
1606: push(@{ $insertlist{"$tag.which"} },$j);
1607: }
1.74 albertel 1608: }
1609: }
1.76 albertel 1610: $tagnum++;
1.74 albertel 1611: }
1612: }
1.98 albertel 1613:
1614: sub description {
1615: my ($token)=@_;
1.138 albertel 1616: my $tagnum;
1617: my $tag=$token->[1];
1618: foreach my $namespace (reverse @Apache::lonxml::namespace) {
1619: my $testtag=$namespace.'::'.$tag;
1620: $tagnum=$insertlist{"$testtag.num"};
1621: if (defined($tagnum)) { last; }
1622: }
1623: if (!defined ($tagnum)) { $tagnum=$Apache::lonxml::insertlist{"$tag.num"}; }
1624: return $insertlist{$tagnum.'.description'};
1.268 bowersj2 1625: }
1626:
1627: # Returns a list containing the help file, and the description
1628: sub helpinfo {
1629: my ($token)=@_;
1630: my $tagnum;
1631: my $tag=$token->[1];
1632: foreach my $namespace (reverse @Apache::lonxml::namespace) {
1633: my $testtag=$namespace.'::'.$tag;
1634: $tagnum=$insertlist{"$testtag.num"};
1635: if (defined($tagnum)) { last; }
1636: }
1637: if (!defined ($tagnum)) { $tagnum=$Apache::lonxml::insertlist{"$tag.num"}; }
1638: return ($insertlist{$tagnum.'.helpfile'}, $insertlist{$tagnum.'.helpdesc'});
1.98 albertel 1639: }
1.123 albertel 1640:
1641: # ----------------------------------------------------------------- whichuser
1642: # returns a list of $symb, $courseid, $domain, $name that is correct for
1643: # calls to lonnet functions for this setup.
1644: # - looks for form.grade_ parameters
1645: sub whichuser {
1.262 matthew 1646: my ($passedsymb)=@_;
1.245 albertel 1647: my ($symb,$courseid,$domain,$name,$publicuser);
1.123 albertel 1648: if (defined($ENV{'form.grade_symb'})) {
1.350 albertel 1649: my ($tmp_courseid)=
1650: &Apache::loncommon::get_env_multiple('form.grade_courseid');
1651: my $allowed=&Apache::lonnet::allowed('vgr',$tmp_courseid);
1652: if (!$allowed &&
1653: exists($ENV{'request.course.sec'}) &&
1654: $ENV{'request.course.sec'} !~ /^\s*$/) {
1655: $allowed=&Apache::lonnet::allowed('vgr',$tmp_courseid.
1656: '/'.$ENV{'request.course.sec'});
1657: }
1658: if ($allowed) {
1659: ($symb)=&Apache::loncommon::get_env_multiple('form.grade_symb');
1660: $courseid=$tmp_courseid;
1661: ($domain)=&Apache::loncommon::get_env_multiple('form.grade_domain');
1662: ($name)=&Apache::loncommon::get_env_multiple('form.grade_username');
1663: return ($symb,$courseid,$domain,$name,$publicuser);
1664: }
1665: }
1666: if (!$passedsymb) {
1667: $symb=&Apache::lonnet::symbread();
1.134 albertel 1668: } else {
1.350 albertel 1669: $symb=$passedsymb;
1670: }
1671: $courseid=$ENV{'request.course.id'};
1672: $domain=$ENV{'user.domain'};
1673: $name=$ENV{'user.name'};
1674: if ($name eq 'public' && $domain eq 'public') {
1675: if (!defined($ENV{'form.username'})) {
1676: $ENV{'form.username'}.=time.rand(10000000);
1.244 albertel 1677: }
1.350 albertel 1678: $name.=$ENV{'form.username'};
1.123 albertel 1679: }
1.245 albertel 1680: return ($symb,$courseid,$domain,$name,$publicuser);
1.123 albertel 1681: }
1682:
1.1 sakharuk 1683: 1;
1684: __END__
1.68 www 1685:
1686:
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