Annotation of loncom/xml/lonxml.pm, revision 1.373
1.2 sakharuk 1: # The LearningOnline Network with CAPA
1.3 sakharuk 2: # XML Parser Module
1.2 sakharuk 3: #
1.373 ! albertel 4: # $Id: lonxml.pm,v 1.372 2005/04/07 06:56:27 albertel Exp $
1.139 www 5: #
6: # Copyright Michigan State University Board of Trustees
7: #
8: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
9: #
10: # LON-CAPA is free software; you can redistribute it and/or modify
11: # it under the terms of the GNU General Public License as published by
12: # the Free Software Foundation; either version 2 of the License, or
13: # (at your option) any later version.
14: #
15: # LON-CAPA is distributed in the hope that it will be useful,
16: # but WITHOUT ANY WARRANTY; without even the implied warranty of
17: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18: # GNU General Public License for more details.
19: #
20: # You should have received a copy of the GNU General Public License
21: # along with LON-CAPA; if not, write to the Free Software
22: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23: #
24: # /home/httpd/html/adm/gpl.txt
25: #
26: # http://www.lon-capa.org/
27: #
28: # Copyright for TtHfunc and TtMfunc by Ian Hutchinson.
29: # TtHfunc and TtMfunc (the "Code") may be compiled and linked into
30: # binary executable programs or libraries distributed by the
31: # Michigan State University (the "Licensee"), but any binaries so
32: # distributed are hereby licensed only for use in the context
33: # of a program or computational system for which the Licensee is the
34: # primary author or distributor, and which performs substantial
35: # additional tasks beyond the translation of (La)TeX into HTML.
36: # The C source of the Code may not be distributed by the Licensee
37: # to any other parties under any circumstances.
38: #
1.316 albertel 39:
1.2 sakharuk 40:
1.4 albertel 41: package Apache::lonxml;
1.33 www 42: use vars
1.320 www 43: qw(@pwd @outputstack $redirection $import @extlinks $metamode $evaluate %insertlist @namespace $errorcount $warningcount @htmlareafields);
1.1 sakharuk 44: use strict;
1.167 albertel 45: use HTML::LCParser();
1.161 albertel 46: use HTML::TreeBuilder();
47: use HTML::Entities();
48: use Safe();
49: use Safe::Hole();
50: use Math::Cephes();
51: use Math::Random();
52: use Opcode();
1.271 www 53: use POSIX qw(strftime);
1.339 albertel 54: use Time::HiRes qw( gettimeofday tv_interval );
1.266 bowersj2 55:
1.72 albertel 56: sub register {
1.141 albertel 57: my ($space,@taglist) = @_;
58: foreach my $temptag (@taglist) {
59: push(@{ $Apache::lonxml::alltags{$temptag} },$space);
1.72 albertel 60: }
61: }
62:
1.141 albertel 63: sub deregister {
64: my ($space,@taglist) = @_;
65: foreach my $temptag (@taglist) {
66: my $tempspace = $Apache::lonxml::alltags{$temptag}[-1];
67: if ($tempspace eq $space) {
68: pop(@{ $Apache::lonxml::alltags{$temptag} });
69: }
70: }
1.142 albertel 71: #&printalltags();
1.141 albertel 72: }
73:
1.46 www 74: use Apache::Constants qw(:common);
1.161 albertel 75: use Apache::lontexconvert();
76: use Apache::style();
77: use Apache::run();
78: use Apache::londefdef();
79: use Apache::scripttag();
1.285 www 80: use Apache::languagetags();
1.161 albertel 81: use Apache::edit();
1.266 bowersj2 82: use Apache::inputtags();
83: use Apache::outputtags();
1.372 albertel 84: use Apache::lonnet;
1.161 albertel 85: use Apache::File();
86: use Apache::loncommon();
1.198 www 87: use Apache::lonfeedback();
1.200 www 88: use Apache::lonmsg();
1.217 matthew 89: use Apache::loncacc();
1.280 www 90: use Apache::lonlocal;
1.79 www 91:
1.72 albertel 92: #================================================== Main subroutine: xmlparse
93: #debugging control, to turn on debugging modify the correct handler
94: $Apache::lonxml::debug=0;
1.206 albertel 95:
96: # keeps count of the number of warnings and errors generated in a parse
97: $warningcount=0;
98: $errorcount=0;
1.72 albertel 99:
100: #path to the directory containing the file currently being processed
101: @pwd=();
102:
103: #these two are used for capturing a subset of the output for later processing,
104: #don't touch them directly use &startredirection and &endredirection
105: @outputstack = ();
106: $redirection = 0;
107:
108: #controls wheter the <import> tag actually does
109: $import = 1;
110: @extlinks=();
111:
112: # meta mode is a bit weird only some output is to be turned off
113: #<output> tag turns metamode off (defined in londefdef.pm)
114: $metamode = 0;
115:
116: # turns on and of run::evaluate actually derefencing var refs
117: $evaluate = 1;
1.7 albertel 118:
1.74 albertel 119: # data structure for eidt mode, determines what tags can go into what other tags
120: %insertlist=();
1.68 www 121:
1.99 albertel 122: # stores the list of active tag namespaces
1.76 albertel 123: @namespace=();
124:
1.99 albertel 125: # has the dynamic menu been updated to know about this resource
126: $Apache::lonxml::registered=0;
127:
1.172 albertel 128: # a pointer the the Apache request object
129: $Apache::lonxml::request='';
130:
1.216 sakharuk 131: # a problem number counter, and check on ether it is used
1.237 sakharuk 132: $Apache::lonxml::counter=1;
1.204 albertel 133: $Apache::lonxml::counter_changed=0;
134:
1.212 albertel 135: #internal check on whether to look at style defs
136: $Apache::lonxml::usestyle=1;
1.260 albertel 137:
138: #locations used to store the parameter string for style substitutions
139: $Apache::lonxml::style_values='';
140: $Apache::lonxml::style_end_values='';
1.212 albertel 141:
1.281 albertel 142: #array of ssi calls that need to occur after we are done parsing
143: @Apache::lonxml::ssi_info=();
144:
1.282 albertel 145: #should we do the postag variable interpolation
146: $Apache::lonxml::post_evaluate=1;
147:
1.295 albertel 148: #a header message to emit in the case of any generated warning or errors
149: $Apache::lonxml::warnings_error_header='';
150:
1.68 www 151: sub xmlbegin {
1.356 albertel 152: my ($style)=@_;
153: my $output='';
154: @htmlareafields=();
1.372 albertel 155: if ($env{'browser.mathml'}) {
1.356 albertel 156: $output='<?xml version="1.0"?>'
1.357 albertel 157: #.'<?xml-stylesheet type="text/css" href="/adm/MathML/mathml.css"?>'."\n"
158: # .'<!DOCTYPE html SYSTEM "/adm/MathML/mathml.dtd" '
159:
160: # .'<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd" [<!ENTITY mathns "http://www.w3.org/1998/Math/MathML">] >'
161: .'<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1 plus MathML 2.0 plus SVG 1.1//EN" "http://www.w3.org/2002/04/xhtml-math-svg/xhtml-math-svg.dtd">'
1.68 www 162: .'<html xmlns:math="http://www.w3.org/1998/Math/MathML" '
1.357 albertel 163: .'xmlns="http://www.w3.org/1999/xhtml">';
1.356 albertel 164: } else {
165: $output='<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html>';
166: }
167: if ($style eq 'encode') {
168: $output=&HTML::Entities::encode($output,'<>&"');
169: }
170: return $output;
1.68 www 171: }
172:
173: sub xmlend {
1.335 sakharuk 174: my ($target,$parser)=@_;
1.278 www 175: my $mode='xml';
176: my $status='OPEN';
1.368 albertel 177: if ($Apache::lonhomework::parsing_a_problem ||
178: $Apache::lonhomework::parsing_a_task ) {
1.278 www 179: $mode='problem';
180: $status=$Apache::inputtags::status[-1];
181: }
1.362 matthew 182: my $discussion;
183: &Apache::loncommon::get_unprocessed_cgi
1.372 albertel 184: ($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') {
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 $finaloutput;
1.106 www 383: }
384:
385: sub htmlclean {
1.107 www 386: my ($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");
1.371 albertel 698: $safeeval->deny("rand");
699: $safeeval->deny("srand");
1.82 ng 700: $safeeval->deny(":base_io");
1.102 albertel 701: $safehole->wrap(\&Apache::scripttag::xmlparse,$safeeval,'&xmlparse');
1.251 albertel 702: $safehole->wrap(\&Apache::outputtags::multipart,$safeeval,'&multipart');
1.82 ng 703: $safehole->wrap(\&Apache::lonnet::EXT,$safeeval,'&EXT');
1.324 albertel 704: $safehole->wrap(\&Apache::chemresponse::chem_standard_order,$safeeval,
705: '&chem_standard_order');
1.369 albertel 706: $safehole->wrap(\&Apache::response::check_status,$safeeval,'&check_status');
1.324 albertel 707:
1.82 ng 708: $safehole->wrap(\&Math::Cephes::asin,$safeeval,'&asin');
709: $safehole->wrap(\&Math::Cephes::acos,$safeeval,'&acos');
710: $safehole->wrap(\&Math::Cephes::atan,$safeeval,'&atan');
711: $safehole->wrap(\&Math::Cephes::sinh,$safeeval,'&sinh');
712: $safehole->wrap(\&Math::Cephes::cosh,$safeeval,'&cosh');
713: $safehole->wrap(\&Math::Cephes::tanh,$safeeval,'&tanh');
714: $safehole->wrap(\&Math::Cephes::asinh,$safeeval,'&asinh');
715: $safehole->wrap(\&Math::Cephes::acosh,$safeeval,'&acosh');
716: $safehole->wrap(\&Math::Cephes::atanh,$safeeval,'&atanh');
717: $safehole->wrap(\&Math::Cephes::erf,$safeeval,'&erf');
718: $safehole->wrap(\&Math::Cephes::erfc,$safeeval,'&erfc');
719: $safehole->wrap(\&Math::Cephes::j0,$safeeval,'&j0');
720: $safehole->wrap(\&Math::Cephes::j1,$safeeval,'&j1');
721: $safehole->wrap(\&Math::Cephes::jn,$safeeval,'&jn');
722: $safehole->wrap(\&Math::Cephes::jv,$safeeval,'&jv');
723: $safehole->wrap(\&Math::Cephes::y0,$safeeval,'&y0');
724: $safehole->wrap(\&Math::Cephes::y1,$safeeval,'&y1');
725: $safehole->wrap(\&Math::Cephes::yn,$safeeval,'&yn');
726: $safehole->wrap(\&Math::Cephes::yv,$safeeval,'&yv');
1.215 albertel 727:
728: $safehole->wrap(\&Math::Cephes::bdtr ,$safeeval,'&bdtr' );
729: $safehole->wrap(\&Math::Cephes::bdtrc ,$safeeval,'&bdtrc' );
730: $safehole->wrap(\&Math::Cephes::bdtri ,$safeeval,'&bdtri' );
731: $safehole->wrap(\&Math::Cephes::btdtr ,$safeeval,'&btdtr' );
732: $safehole->wrap(\&Math::Cephes::chdtr ,$safeeval,'&chdtr' );
733: $safehole->wrap(\&Math::Cephes::chdtrc,$safeeval,'&chdtrc');
734: $safehole->wrap(\&Math::Cephes::chdtri,$safeeval,'&chdtri');
735: $safehole->wrap(\&Math::Cephes::fdtr ,$safeeval,'&fdtr' );
736: $safehole->wrap(\&Math::Cephes::fdtrc ,$safeeval,'&fdtrc' );
737: $safehole->wrap(\&Math::Cephes::fdtri ,$safeeval,'&fdtri' );
738: $safehole->wrap(\&Math::Cephes::gdtr ,$safeeval,'&gdtr' );
739: $safehole->wrap(\&Math::Cephes::gdtrc ,$safeeval,'&gdtrc' );
740: $safehole->wrap(\&Math::Cephes::nbdtr ,$safeeval,'&nbdtr' );
741: $safehole->wrap(\&Math::Cephes::nbdtrc,$safeeval,'&nbdtrc');
742: $safehole->wrap(\&Math::Cephes::nbdtri,$safeeval,'&nbdtri');
743: $safehole->wrap(\&Math::Cephes::ndtr ,$safeeval,'&ndtr' );
744: $safehole->wrap(\&Math::Cephes::ndtri ,$safeeval,'&ndtri' );
745: $safehole->wrap(\&Math::Cephes::pdtr ,$safeeval,'&pdtr' );
746: $safehole->wrap(\&Math::Cephes::pdtrc ,$safeeval,'&pdtrc' );
747: $safehole->wrap(\&Math::Cephes::pdtri ,$safeeval,'&pdtri' );
748: $safehole->wrap(\&Math::Cephes::stdtr ,$safeeval,'&stdtr' );
749: $safehole->wrap(\&Math::Cephes::stdtri,$safeeval,'&stdtri');
750:
751: # $safehole->wrap(\&Math::Cephes::new_fract,$safeeval,'&new_fract');
752: # $safehole->wrap(\&Math::Cephes::radd,$safeeval,'&radd');
753: # $safehole->wrap(\&Math::Cephes::rsub,$safeeval,'&rsub');
754: # $safehole->wrap(\&Math::Cephes::rmul,$safeeval,'&rmul');
755: # $safehole->wrap(\&Math::Cephes::rdiv,$safeeval,'&rdiv');
756: # $safehole->wrap(\&Math::Cephes::euclid,$safeeval,'&euclid');
757:
1.91 ng 758: $safehole->wrap(\&Math::Random::random_beta,$safeeval,'&math_random_beta');
759: $safehole->wrap(\&Math::Random::random_chi_square,$safeeval,'&math_random_chi_square');
760: $safehole->wrap(\&Math::Random::random_exponential,$safeeval,'&math_random_exponential');
761: $safehole->wrap(\&Math::Random::random_f,$safeeval,'&math_random_f');
762: $safehole->wrap(\&Math::Random::random_gamma,$safeeval,'&math_random_gamma');
763: $safehole->wrap(\&Math::Random::random_multivariate_normal,$safeeval,'&math_random_multivariate_normal');
764: $safehole->wrap(\&Math::Random::random_multinomial,$safeeval,'&math_random_multinomial');
765: $safehole->wrap(\&Math::Random::random_noncentral_chi_square,$safeeval,'&math_random_noncentral_chi_square');
766: $safehole->wrap(\&Math::Random::random_noncentral_f,$safeeval,'&math_random_noncentral_f');
767: $safehole->wrap(\&Math::Random::random_normal,$safeeval,'&math_random_normal');
768: $safehole->wrap(\&Math::Random::random_permutation,$safeeval,'&math_random_permutation');
1.93 ng 769: $safehole->wrap(\&Math::Random::random_permuted_index,$safeeval,'&math_random_permuted_index');
1.91 ng 770: $safehole->wrap(\&Math::Random::random_uniform,$safeeval,'&math_random_uniform');
771: $safehole->wrap(\&Math::Random::random_poisson,$safeeval,'&math_random_poisson');
772: $safehole->wrap(\&Math::Random::random_uniform_integer,$safeeval,'&math_random_uniform_integer');
773: $safehole->wrap(\&Math::Random::random_negative_binomial,$safeeval,'&math_random_negative_binomial');
774: $safehole->wrap(\&Math::Random::random_binomial,$safeeval,'&math_random_binomial');
775: $safehole->wrap(\&Math::Random::random_seed_from_phrase,$safeeval,'&random_seed_from_phrase');
776: $safehole->wrap(\&Math::Random::random_set_seed_from_phrase,$safeeval,'&random_set_seed_from_phrase');
777: $safehole->wrap(\&Math::Random::random_get_seed,$safeeval,'&random_get_seed');
778: $safehole->wrap(\&Math::Random::random_set_seed,$safeeval,'&random_set_seed');
1.305 albertel 779: $safehole->wrap(\&Apache::lonxml::error,$safeeval,'&LONCAPA_INTERNAL_ERROR');
1.311 albertel 780: $safehole->wrap(\&Apache::lonxml::debug,$safeeval,'&LONCAPA_INTERNAL_DEBUG');
1.322 albertel 781: $safehole->wrap(\&Apache::caparesponse::get_sigrange,$safeeval,'&LONCAPA_INTERNAL_get_sigrange');
1.91 ng 782:
1.82 ng 783: #need to inspect this class of ops
784: # $safeeval->deny(":base_orig");
1.331 albertel 785: $safeeval->permit("require");
1.91 ng 786: $safeinit .= ';$external::target="'.$target.'";';
1.82 ng 787: &Apache::run::run($safeinit,$safeeval);
1.373 ! albertel 788: &initialize_rndseed($safeeval);
! 789: }
1.303 albertel 790:
1.373 ! albertel 791: sub initialize_rndseed {
! 792: my ($safeeval)=@_;
! 793: my $rndseed;
! 794: my ($symb,$courseid,$domain,$name) = &Apache::lonxml::whichuser();
! 795: $rndseed=&Apache::lonnet::rndseed($symb,$courseid,$domain,$name);
! 796: my $safeinit = '$external::randomseed="'.$rndseed.'";';
! 797: &Apache::lonxml::debug("Setting rndseed to $rndseed");
! 798: &Apache::run::run($safeinit,$safeeval);
1.207 albertel 799: }
800:
801: sub default_homework_load {
802: my ($safeeval)=@_;
803: &Apache::lonxml::debug('Loading default_homework');
804: my $default=&Apache::lonnet::getfile('/home/httpd/html/res/adm/includes/default_homework.lcpm');
1.241 albertel 805: if ($default eq -1) {
1.207 albertel 806: &Apache::lonxml::error("<b>Unable to find <i>default_homework.lcpm</i></b>");
807: } else {
808: &Apache::run::run($default,$safeeval);
809: $Apache::lonxml::default_homework_loaded=1;
810: }
1.17 albertel 811: }
812:
1.358 albertel 813: {
814: my $alarm_depth;
815: sub init_alarm {
816: alarm(0);
817: $alarm_depth=0;
818: }
819:
820: sub start_alarm {
821: if ($alarm_depth<1) {
822: my $old=alarm($Apache::lonnet::perlvar{'lonScriptTimeout'});
823: if ($old) {
824: &Apache::lonxml::error("Cancelled an alarm of $old, this shouldn't occur.");
825: }
826: }
827: $alarm_depth++;
828: }
829:
830: sub end_alarm {
831: $alarm_depth--;
832: if ($alarm_depth<1) { alarm(0); }
833: }
834: }
1.328 albertel 835: my $metamode_was;
1.55 albertel 836: sub startredirection {
1.328 albertel 837: if (!$Apache::lonxml::redirection) {
838: $metamode_was=$Apache::lonxml::metamode;
839: }
840: $Apache::lonxml::metamode=0;
841: $Apache::lonxml::redirection++;
842: push (@Apache::lonxml::outputstack, '');
1.55 albertel 843: }
844:
845: sub endredirection {
1.328 albertel 846: if (!$Apache::lonxml::redirection) {
847: &Apache::lonxml::error("Endredirection was called, before a startredirection, perhaps you have unbalanced tags. Some debuging information:".join ":",caller);
848: return '';
849: }
850: $Apache::lonxml::redirection--;
851: if (!$Apache::lonxml::redirection) {
852: $Apache::lonxml::metamode=$metamode_was;
853: }
854: pop @Apache::lonxml::outputstack;
1.97 albertel 855: }
856:
857: sub end_tag {
858: my ($tagstack,$parstack,$token)=@_;
859: pop(@$tagstack);
860: pop(@$parstack);
861: &decreasedepth($token);
1.55 albertel 862: }
863:
1.17 albertel 864: sub initdepth {
865: @Apache::lonxml::depthcounter=();
866: $Apache::lonxml::depth=-1;
867: $Apache::lonxml::olddepth=-1;
868: }
869:
1.339 albertel 870: my @timers;
871: my $lasttime;
1.17 albertel 872: sub increasedepth {
1.19 albertel 873: my ($token) = @_;
1.17 albertel 874: $Apache::lonxml::depth++;
875: $Apache::lonxml::depthcounter[$Apache::lonxml::depth]++;
876: if ($Apache::lonxml::depthcounter[$Apache::lonxml::depth]==1) {
877: $Apache::lonxml::olddepth=$Apache::lonxml::depth;
878: }
1.340 albertel 879: my $time;
880: if ($Apache::lonxml::debug eq "1") {
881: push(@timers,[&gettimeofday()]);
882: $time=&tv_interval($lasttime);
883: $lasttime=[&gettimeofday()];
884: }
1.339 albertel 885: my $spacing=' 'x($Apache::lonxml::depth-1);
1.42 albertel 886: my $curdepth=join('_',@Apache::lonxml::depthcounter);
1.339 albertel 887: &Apache::lonxml::debug("s$spacing$Apache::lonxml::depth : $Apache::lonxml::olddepth : $curdepth : $token->[1] : $time : \n");
1.54 albertel 888: #print "<br />s $Apache::lonxml::depth : $Apache::lonxml::olddepth : $curdepth : $token->[1]\n";
1.17 albertel 889: }
890:
891: sub decreasedepth {
1.19 albertel 892: my ($token) = @_;
1.17 albertel 893: $Apache::lonxml::depth--;
1.36 albertel 894: if ($Apache::lonxml::depth<$Apache::lonxml::olddepth-1) {
895: $#Apache::lonxml::depthcounter--;
896: $Apache::lonxml::olddepth=$Apache::lonxml::depth+1;
897: }
1.43 albertel 898: if ( $Apache::lonxml::depth < -1) {
1.280 www 899: &Apache::lonxml::warning(&mt("Missing tags, unable to properly run file."));
1.43 albertel 900: $Apache::lonxml::depth='-1';
901: }
1.340 albertel 902: my ($timer,$time);
903: if ($Apache::lonxml::debug eq "1") {
904: $timer=pop(@timers);
905: $time=&tv_interval($lasttime);
906: $lasttime=[&gettimeofday()];
907: }
1.339 albertel 908: my $spacing=' 'x$Apache::lonxml::depth;
1.42 albertel 909: my $curdepth=join('_',@Apache::lonxml::depthcounter);
1.339 albertel 910: &Apache::lonxml::debug("e$spacing$Apache::lonxml::depth : $Apache::lonxml::olddepth : $curdepth : $token->[1] : $time : ".&tv_interval($timer)."\n");
1.54 albertel 911: #print "<br />e $Apache::lonxml::depth : $Apache::lonxml::olddepth : $token->[1] : $curdepth\n";
1.1 sakharuk 912: }
1.19 albertel 913:
1.180 albertel 914: sub get_all_text_unbalanced {
1.190 albertel 915: #there is a copy of this in lonpublisher.pm
1.326 albertel 916: my($tag,$pars)= @_;
917: my $token;
918: my $result='';
919: $tag='<'.$tag.'>';
920: while ($token = $$pars[-1]->get_token) {
921: if (($token->[0] eq 'T')||($token->[0] eq 'C')||($token->[0] eq 'D')) {
922: $result.=$token->[1];
923: } elsif ($token->[0] eq 'PI') {
924: $result.=$token->[2];
925: } elsif ($token->[0] eq 'S') {
926: $result.=$token->[4];
927: } elsif ($token->[0] eq 'E') {
928: $result.=$token->[2];
929: }
930: if ($result =~ /\Q$tag\E/is) {
931: ($result,my $redo)=$result =~ /(.*)\Q$tag\E(.*)/is;
932: #&Apache::lonxml::debug('Got a winner with leftovers ::'.$2);
933: #&Apache::lonxml::debug('Result is :'.$1);
934: $redo=$tag.$redo;
935: &Apache::lonxml::newparser($pars,\$redo);
936: last;
937: }
938: }
939: return $result
1.204 albertel 940: }
941:
942: sub increment_counter {
1.247 albertel 943: my ($increment) = @_;
1.289 sakharuk 944: if (defined($increment) && $increment gt 0) {
945: $Apache::lonxml::counter+=$increment;
946: } else {
947: $Apache::lonxml::counter++;
1.247 albertel 948: }
1.289 sakharuk 949: $Apache::lonxml::counter_changed=1;
1.204 albertel 950: }
951:
952: sub init_counter {
1.372 albertel 953: if (defined($env{'form.counter'})) {
954: $Apache::lonxml::counter=$env{'form.counter'};
1.247 albertel 955: $Apache::lonxml::counter_changed=0;
1.237 sakharuk 956: } else {
1.204 albertel 957: $Apache::lonxml::counter=1;
1.247 albertel 958: $Apache::lonxml::counter_changed=1;
1.204 albertel 959: }
960: }
961:
962: sub store_counter {
963: &Apache::lonnet::appenv(('form.counter' => $Apache::lonxml::counter));
964: return '';
1.180 albertel 965: }
966:
1.19 albertel 967: sub get_all_text {
1.270 albertel 968: my($tag,$pars,$style)= @_;
969: my $gotfullstack=1;
970: if (ref($pars) ne 'ARRAY') {
971: $gotfullstack=0;
972: $pars=[$pars];
973: }
974: if (ref($style) ne 'HASH') {
975: $style={};
976: }
977: my $depth=0;
978: my $token;
979: my $result='';
980: if ( $tag =~ m:^/: ) {
981: my $tag=substr($tag,1);
982: #&Apache::lonxml::debug("have:$tag:");
983: my $top_empty=0;
984: while (($depth >=0) && ($#$pars > -1) && (!$top_empty)) {
985: while (($depth >=0) && ($token = $$pars[-1]->get_token)) {
986: #&Apache::lonxml::debug("e token:$token->[0]:$depth:$token->[1]:".$#$pars.":".$#Apache::lonxml::pwd);
987: if (($token->[0] eq 'T')||($token->[0] eq 'C')||($token->[0] eq 'D')) {
988: $result.=$token->[1];
989: } elsif ($token->[0] eq 'PI') {
990: $result.=$token->[2];
991: } elsif ($token->[0] eq 'S') {
1.316 albertel 992: if ($token->[1] =~ /^\Q$tag\E$/i) { $depth++; }
993: if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_ON$/) { $Apache::lonxml::usestyle=1; }
994: if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_OFF$/) { $Apache::lonxml::usestyle=0; }
1.270 albertel 995: $result.=$token->[4];
996: } elsif ($token->[0] eq 'E') {
1.316 albertel 997: if ( $token->[1] =~ /^\Q$tag\E$/i) { $depth--; }
1.270 albertel 998: #skip sending back the last end tag
1.283 albertel 999: if ($depth == 0 && exists($$style{'/'.$token->[1]}) && $Apache::lonxml::usestyle) {
1.270 albertel 1000: my $string=
1001: '<LONCAPA_INTERNAL_TURN_STYLE_OFF end="yes" />'.
1002: $$style{'/'.$token->[1]}.
1003: $token->[2].
1004: '<LONCAPA_INTERNAL_TURN_STYLE_ON />';
1005: &Apache::lonxml::newparser($pars,\$string);
1006: #&Apache::lonxml::debug("reParsing $string");
1007: next;
1008: }
1009: if ($depth > -1) {
1010: $result.=$token->[2];
1011: } else {
1012: $$pars[-1]->unget_token($token);
1013: }
1014: }
1015: }
1016: if (($depth >=0) && ($#$pars == 0) ) { $top_empty=1; }
1017: if (($depth >=0) && ($#$pars > 0) ) {
1018: pop(@$pars);
1019: pop(@Apache::lonxml::pwd);
1020: }
1021: }
1022: if ($top_empty && $depth >= 0) {
1023: #never found the end tag ran out of text, throw error send back blank
1024: &error('Never found end tag for <'.$tag.
1025: '> current string <pre>'.
1.314 albertel 1026: &HTML::Entities::encode($result,'<>&"').
1.270 albertel 1027: '</pre>');
1028: if ($gotfullstack) {
1029: my $newstring='</'.$tag.'>'.$result;
1030: &Apache::lonxml::newparser($pars,\$newstring);
1031: }
1032: $result='';
1033: }
1034: } else {
1035: while ($#$pars > -1) {
1036: while ($token = $$pars[-1]->get_token) {
1037: #&Apache::lonxml::debug("s token:$token->[0]:$depth:$token->[1]");
1038: if (($token->[0] eq 'T')||($token->[0] eq 'C')||
1039: ($token->[0] eq 'D')) {
1040: $result.=$token->[1];
1041: } elsif ($token->[0] eq 'PI') {
1042: $result.=$token->[2];
1043: } elsif ($token->[0] eq 'S') {
1.316 albertel 1044: if ( $token->[1] =~ /^\Q$tag\E$/i) {
1.270 albertel 1045: $$pars[-1]->unget_token($token); last;
1046: } else {
1047: $result.=$token->[4];
1048: }
1.316 albertel 1049: if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_ON$/) { $Apache::lonxml::usestyle=1; }
1050: if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_OFF$/) { $Apache::lonxml::usestyle=0; }
1.270 albertel 1051: } elsif ($token->[0] eq 'E') {
1052: $result.=$token->[2];
1053: }
1054: }
1055: if (($#$pars > 0) ) {
1056: pop(@$pars);
1057: pop(@Apache::lonxml::pwd);
1058: } else { last; }
1059: }
1060: }
1061: #&Apache::lonxml::debug("Exit:$result:");
1062: return $result
1.19 albertel 1063: }
1064:
1.23 albertel 1065: sub newparser {
1066: my ($parser,$contentref,$dir) = @_;
1.167 albertel 1067: push (@$parser,HTML::LCParser->new($contentref));
1.365 albertel 1068: $$parser[-1]->xml_mode(1);
1069: $$parser[-1]->marked_sections(1);
1.23 albertel 1070: if ( $dir eq '' ) {
1071: push (@Apache::lonxml::pwd, $Apache::lonxml::pwd[$#Apache::lonxml::pwd]);
1072: } else {
1073: push (@Apache::lonxml::pwd, $dir);
1074: }
1075: }
1.1 sakharuk 1076:
1.8 albertel 1077: sub parstring {
1078: my ($token) = @_;
1079: my $temp='';
1.142 albertel 1080: foreach (@{$token->[3]}) {
1.35 www 1081: unless ($_=~/\W/) {
1.42 albertel 1082: my $val=$token->[2]->{$_};
1.231 albertel 1083: $val =~ s/([\%\@\\\"\'])/\\$1/g;
1.342 albertel 1084: $val =~ s/(\$[^{a-zA-Z_])/\\$1/g;
1.346 albertel 1085: $val =~ s/(\$)$/\\$1/;
1.51 albertel 1086: #if ($val =~ m/^[\%\@]/) { $val="\\".$val; }
1.267 sakharuk 1087: $temp .= "my \$$_=\"$val\";";
1.20 albertel 1088: }
1.142 albertel 1089: }
1.8 albertel 1090: return $temp;
1091: }
1.22 albertel 1092:
1.34 www 1093: sub writeallows {
1.126 www 1094: unless ($#extlinks>=0) { return; }
1.34 www 1095: my $thisurl='/res/'.&Apache::lonnet::declutter(shift);
1.372 albertel 1096: if ($env{'httpref.'.$thisurl}) {
1097: $thisurl=$env{'httpref.'.$thisurl};
1.111 www 1098: }
1.34 www 1099: my $thisdir=$thisurl;
1100: $thisdir=~s/\/[^\/]+$//;
1101: my %httpref=();
1.142 albertel 1102: foreach (@extlinks) {
1.34 www 1103: $httpref{'httpref.'.
1.125 www 1104: &Apache::lonnet::hreflocation($thisdir,$_)}=$thisurl;
1.142 albertel 1105: }
1.126 www 1106: @extlinks=();
1.34 www 1107: &Apache::lonnet::appenv(%httpref);
1108: }
1109:
1.281 albertel 1110: sub register_ssi {
1111: my ($url,%form)=@_;
1112: push (@Apache::lonxml::ssi_info,{'url'=>$url,'form'=>\%form});
1113: return '';
1114: }
1115:
1116: sub do_registered_ssi {
1117: foreach my $info (@Apache::lonxml::ssi_info) {
1118: my %form=%{ $info->{'form'}};
1119: my $url=$info->{'url'};
1120: &Apache::lonnet::ssi($url,%form);
1121: }
1122: }
1.66 www 1123: #
1124: # Afterburner handles anchors, highlights and links
1125: #
1126: sub afterburn {
1127: my $result=shift;
1.154 albertel 1128: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
1129: ['highlight','anchor','link']);
1.372 albertel 1130: if ($env{'form.highlight'}) {
1131: foreach (split(/\,/,$env{'form.highlight'})) {
1.66 www 1132: my $anchorname=$_;
1133: my $matchthis=$anchorname;
1134: $matchthis=~s/\_+/\\s\+/g;
1.317 albertel 1135: $result=~s/(\Q$matchthis\E)/\<font color=\"red\"\>$1\<\/font\>/gs;
1.142 albertel 1136: }
1.66 www 1137: }
1.372 albertel 1138: if ($env{'form.link'}) {
1139: foreach (split(/\,/,$env{'form.link'})) {
1.66 www 1140: my ($anchorname,$linkurl)=split(/\>/,$_);
1141: my $matchthis=$anchorname;
1142: $matchthis=~s/\_+/\\s\+/g;
1.317 albertel 1143: $result=~s/(\Q$matchthis\E)/\<a href=\"$linkurl\"\>$1\<\/a\>/gs;
1.142 albertel 1144: }
1.66 www 1145: }
1.372 albertel 1146: if ($env{'form.anchor'}) {
1147: my $anchorname=$env{'form.anchor'};
1.66 www 1148: my $matchthis=$anchorname;
1149: $matchthis=~s/\_+/\\s\+/g;
1.317 albertel 1150: $result=~s/(\Q$matchthis\E)/\<a name=\"$anchorname\"\>$1\<\/a\>/s;
1.66 www 1151: $result.=(<<"ENDSCRIPT");
1.226 albertel 1152: <script type="text/javascript">
1.66 www 1153: document.location.hash='$anchorname';
1154: </script>
1155: ENDSCRIPT
1156: }
1157: return $result;
1158: }
1159:
1.79 www 1160: sub storefile {
1161: my ($file,$contents)=@_;
1.290 albertel 1162: &Apache::lonnet::correct_line_ends(\$contents);
1.79 www 1163: if (my $fh=Apache::File->new('>'.$file)) {
1164: print $fh $contents;
1165: $fh->close();
1.271 www 1166: return 1;
1.147 albertel 1167: } else {
1.271 www 1168: &warning("Unable to save file $file");
1169: return 0;
1.79 www 1170: }
1171: }
1172:
1.151 albertel 1173: sub createnewhtml {
1.321 www 1174: my $title=&mt('Title of document goes here');
1175: my $body=&mt('Body of document goes here');
1176: my $filecontents=(<<SIMPLECONTENT);
1177: <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml/11/DTD/xhtml11.dtd">
1.78 www 1178: <html>
1179: <head>
1.321 www 1180: <title>$title</title>
1.78 www 1181: </head>
1182: <body bgcolor="#FFFFFF">
1.321 www 1183: $body
1.78 www 1184: </body>
1185: </html>
1186: SIMPLECONTENT
1.321 www 1187: return $filecontents;
1.151 albertel 1188: }
1189:
1.274 albertel 1190: sub createnewsty {
1191: my $filecontents=(<<SIMPLECONTENT);
1192: <definetag name="">
1193: <render>
1194: <web></web>
1195: <tex></tex>
1196: </render>
1197: </definetag>
1198: SIMPLECONTENT
1199: return $filecontents;
1200: }
1201:
1.147 albertel 1202:
1.151 albertel 1203: sub inserteditinfo {
1.274 albertel 1204: my ($result,$filecontents,$filetype)=@_;
1.314 albertel 1205: $filecontents = &HTML::Entities::encode($filecontents,'<>&"');
1.147 albertel 1206: # my $editheader='<a href="#editsection">Edit below</a><hr />';
1.274 albertel 1207: my $xml_help = '';
1.321 www 1208: my $initialize='';
1.274 albertel 1209: if ($filetype eq 'html') {
1.323 www 1210: my $addbuttons=&Apache::lonhtmlcommon::htmlareaaddbuttons();
1.333 www 1211: $initialize=&Apache::lonhtmlcommon::htmlareaheaders().
1.347 albertel 1212: &Apache::lonhtmlcommon::spellheader();
1213: if (!&Apache::lonhtmlcommon::htmlareablocked() &&
1214: &Apache::lonhtmlcommon::htmlareabrowser()) {
1215: $initialize.=(<<FULLPAGE);
1.321 www 1216: <script type="text/javascript">
1.323 www 1217: $addbuttons
1218:
1.321 www 1219: HTMLArea.loadPlugin("FullPage");
1220:
1221: function initDocument() {
1.323 www 1222: var editor=new HTMLArea("filecont",config);
1.321 www 1223: editor.registerPlugin(FullPage);
1224: editor.generate();
1225: }
1226: </script>
1227: FULLPAGE
1.347 albertel 1228: } else {
1229: $initialize.=(<<FULLPAGE);
1230: <script type="text/javascript">
1231: $addbuttons
1232: function initDocument() {
1233: }
1234: </script>
1235: FULLPAGE
1236: }
1.321 www 1237: $result=~s/\<body([^\>]*)\>/\<body onload="initDocument()" $1\>/i;
1238: $xml_help=&Apache::loncommon::helpLatexCheatsheet();
1.274 albertel 1239: }
1240: my $cleanbut = '';
1241: if ($filetype eq 'html') {
1.280 www 1242: $cleanbut='<input type="submit" name="attemptclean" value="'.
1243: &mt('Save and then attempt to clean HTML').'" />';
1.274 albertel 1244: }
1.254 albertel 1245: my $titledisplay=&display_title();
1.280 www 1246: my %lt=&Apache::lonlocal::texthash('st' => 'Save this',
1247: 'vi' => 'View',
1248: 'ed' => 'Edit');
1.161 albertel 1249: my $buttons=(<<BUTTONS);
1.274 albertel 1250: $cleanbut
1.304 matthew 1251: <input type="submit" name="savethisfile" accesskey="s" value="$lt{'st'}" />
1252: <input type="submit" name="viewmode" accesskey="v" value="$lt{'vi'}" />
1.161 albertel 1253: BUTTONS
1.333 www 1254: $buttons.=&Apache::lonhtmlcommon::spelllink('xmledit','filecont');
1.338 albertel 1255: $buttons.=&Apache::lonhtmlcommon::htmlareaselectactive('filecont');
1.78 www 1256: my $editfooter=(<<ENDFOOTER);
1.321 www 1257: $initialize
1.78 www 1258: <hr />
1259: <a name="editsection" />
1.333 www 1260: <form method="post" name="xmledit">
1.240 albertel 1261: $xml_help
1.280 www 1262: <input type="hidden" name="editmode" value="$lt{'ed'}" />
1.170 www 1263: $buttons<br />
1.366 albertel 1264: <textarea style="width:100%" cols="80" rows="44" name="filecont" id="filecont">$filecontents</textarea>
1.170 www 1265: <br />$buttons
1.78 www 1266: <br />
1267: </form>
1.254 albertel 1268: $titledisplay
1.321 www 1269: </body>
1.78 www 1270: ENDFOOTER
1.147 albertel 1271: # $result=~s/(\<body[^\>]*\>)/$1$editheader/is;
1.78 www 1272: $result=~s/(\<\/body\>)/$editfooter/is;
1273: return $result;
1274: }
1275:
1.152 albertel 1276: sub get_target {
1.372 albertel 1277: my $viewgrades=&Apache::lonnet::allowed('vgr',$env{'request.course.id'});
1278: if ( $env{'request.state'} eq 'published') {
1279: if ( defined($env{'form.grade_target'})
1.152 albertel 1280: && ($viewgrades == 'F' )) {
1.372 albertel 1281: return ($env{'form.grade_target'});
1282: } elsif (defined($env{'form.grade_target'})) {
1283: if (($env{'form.grade_target'} eq 'web') ||
1284: ($env{'form.grade_target'} eq 'tex') ) {
1285: return $env{'form.grade_target'}
1.153 albertel 1286: } else {
1287: return 'web';
1288: }
1.152 albertel 1289: } else {
1290: return 'web';
1291: }
1.372 albertel 1292: } elsif ($env{'request.state'} eq 'construct') {
1293: if ( defined($env{'form.grade_target'})) {
1294: return ($env{'form.grade_target'});
1.152 albertel 1295: } else {
1296: return 'web';
1297: }
1298: } else {
1299: return 'web';
1300: }
1301: }
1302:
1.24 sakharuk 1303: sub handler {
1.255 sakharuk 1304: my $request=shift;
1305:
1306: my $target=&get_target();
1307:
1.372 albertel 1308: $Apache::lonxml::debug=$env{'user.debug'};
1.255 sakharuk 1309:
1.364 albertel 1310: &Apache::loncommon::content_type($request,'text/html');
1.255 sakharuk 1311: &Apache::loncommon::no_cache($request);
1.372 albertel 1312: if ($env{'request.state'} eq 'published') {
1.363 albertel 1313: $request->set_last_modified(&Apache::lonnet::metadata($request->uri,
1314: 'lastrevisiondate'));
1315: }
1.255 sakharuk 1316: $request->send_http_header;
1317:
1318: return OK if $request->header_only;
1.68 www 1319:
1320:
1.255 sakharuk 1321: my $file=&Apache::lonnet::filelocation("",$request->uri);
1.274 albertel 1322: my $filetype;
1323: if ($file =~ /\.sty$/) {
1324: $filetype='sty';
1325: } else {
1326: $filetype='html';
1327: }
1.78 www 1328: #
1329: # Edit action? Save file.
1330: #
1.372 albertel 1331: unless ($env{'request.state'} eq 'published') {
1332: if (($env{'form.savethisfile'}) || ($env{'form.attemptclean'})) {
1333: if (&storefile($file,$env{'form.filecont'})) {
1.309 albertel 1334: &Apache::lonxml::info("<font COLOR=\"#0000FF\">".
1335: &mt('Updated').": ".
1336: &Apache::lonlocal::locallocaltime(time).
1337: " </font>");
1.271 www 1338: }
1.255 sakharuk 1339: }
1340: }
1341: my %mystyle;
1342: my $result = '';
1343: my $filecontents=&Apache::lonnet::getfile($file);
1344: if ($filecontents eq -1) {
1.284 www 1345: my $bodytag=&Apache::loncommon::bodytag('File Error');
1346: my $fnf=&mt('File not found');
1.255 sakharuk 1347: $result=(<<ENDNOTFOUND);
1.78 www 1348: <html>
1349: <head>
1.284 www 1350: <title>$fnf</title>
1.78 www 1351: </head>
1.284 www 1352: $bodytag
1353: <b>$fnf: $file</b>
1.78 www 1354: </body>
1355: </html>
1356: ENDNOTFOUND
1.343 albertel 1357: $filecontents='';
1.372 albertel 1358: if ($env{'request.state'} ne 'published') {
1.274 albertel 1359: if ($filetype eq 'sty') {
1360: $filecontents=&createnewsty();
1361: } else {
1362: $filecontents=&createnewhtml();
1363: }
1.372 albertel 1364: $env{'form.editmode'}='Edit'; #force edit mode
1.255 sakharuk 1365: }
1366: } else {
1.372 albertel 1367: unless ($env{'request.state'} eq 'published') {
1.343 albertel 1368: if ($filecontents=~/BEGIN LON-CAPA Internal/) {
1369: &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.'));
1370: }
1371:
1.372 albertel 1372: if ($env{'form.attemptclean'}) {
1.255 sakharuk 1373: $filecontents=&htmlclean($filecontents,1);
1374: }
1.264 www 1375: #
1376: # we are in construction space, see if edit mode forced
1377: &Apache::loncommon::get_unprocessed_cgi
1378: ($ENV{'QUERY_STRING'},['editmode']);
1.255 sakharuk 1379: }
1.372 albertel 1380: if (!$env{'form.editmode'} || $env{'form.viewmode'}) {
1.255 sakharuk 1381: $result = &Apache::lonxml::xmlparse($request,$target,$filecontents,
1382: '',%mystyle);
1.368 albertel 1383: undef($Apache::lonhomework::parsing_a_task);
1.255 sakharuk 1384: }
1.147 albertel 1385: }
1.255 sakharuk 1386:
1.78 www 1387: #
1388: # Edit action? Insert editing commands
1389: #
1.372 albertel 1390: unless ($env{'request.state'} eq 'published') {
1391: if ($env{'form.editmode'} && (!($env{'form.viewmode'}))) {
1.255 sakharuk 1392: my $displayfile=$request->uri;
1393: $displayfile=~s/^\/[^\/]*//;
1.349 albertel 1394: my $bodytag='<body bgcolor="#FFFFFF">';
1.372 albertel 1395: if ($env{'environment.remote'} eq 'off') {
1.349 albertel 1396: $bodytag=&Apache::loncommon::bodytag();
1397: }
1398: $result='<html>'.$bodytag.
1.309 albertel 1399: &Apache::lonxml::message_location().'<h3>'.
1400: $displayfile.
1.255 sakharuk 1401: '</h3></body></html>';
1.274 albertel 1402: $result=&inserteditinfo($result,$filecontents,$filetype);
1.255 sakharuk 1403: }
1.147 albertel 1404: }
1.274 albertel 1405: if ($filetype eq 'html') { writeallows($request->uri); }
1406:
1.255 sakharuk 1407:
1.309 albertel 1408: &Apache::lonxml::add_messages(\$result);
1.255 sakharuk 1409: $request->print($result);
1410:
1411: return OK;
1.253 albertel 1412: }
1413:
1414: sub display_title {
1415: my $result;
1.372 albertel 1416: if ($env{'request.state'} eq 'construct') {
1.253 albertel 1417: my $title=&Apache::lonnet::gettitle();
1418: if (!defined($title) || $title eq '') {
1.372 albertel 1419: $title = $env{'request.filename'};
1.253 albertel 1420: $title = substr($title, rindex($title, '/') + 1);
1421: }
1422: $result = "<script type='text/javascript'>top.document.title = '$title - LON-CAPA Construction Space';</script>";
1423: }
1424: return $result;
1.24 sakharuk 1425: }
1.147 albertel 1426:
1.22 albertel 1427: sub debug {
1.298 albertel 1428: if ($Apache::lonxml::debug eq "1") {
1429: $|=1;
1.300 albertel 1430: my $request=$Apache::lonxml::request;
1431: if (!$request) { $request=Apache->request; }
1.314 albertel 1432: $request->print('<font size="-2"><pre>DEBUG:'.&HTML::Entities::encode($_[0],'<>&"')."</pre></font>\n");
1.346 albertel 1433: #&Apache::lonnet::logthis($_[0]);
1.298 albertel 1434: }
1.22 albertel 1435: }
1.49 albertel 1436:
1.348 albertel 1437: sub show_error_warn_msg {
1.372 albertel 1438: if ($env{'request.filename'} eq '/home/httpd/html/res/lib/templates/simpleproblem.problem' &&
1439: &Apache::lonnet::allowed('mdc',$env{'request.course.id'})) {
1.351 albertel 1440: return 1;
1441: }
1.348 albertel 1442: return (($Apache::lonxml::debug eq 1) ||
1.372 albertel 1443: ($env{'request.state'} eq 'construct') ||
1.348 albertel 1444: ($Apache::lonhomework::browse eq 'F'
1445: &&
1.372 albertel 1446: $env{'form.show_errors'} eq 'on'));
1.348 albertel 1447: }
1448:
1.22 albertel 1449: sub error {
1.336 albertel 1450: $errorcount++;
1.348 albertel 1451: if ( &show_error_warn_msg() ) {
1.336 albertel 1452: # If printing in construction space, put the error inside <pre></pre>
1453: push(@Apache::lonxml::error_messages,
1454: $Apache::lonxml::warnings_error_header.
1455: "<b>ERROR:</b>".join("<br />\n",@_)."<br />\n");
1456: $Apache::lonxml::warnings_error_header='';
1457: } else {
1458: my $errormsg;
1459: my ($symb)=&Apache::lonnet::symbread();
1460: if ( !$symb ) {
1461: #public or browsers
1462: $errormsg=&mt("An error occured while processing this resource. The author has been notified.");
1463: }
1464: #notify author
1.372 albertel 1465: &Apache::lonmsg::author_res_msg($env{'request.filename'},join('<br />',@_));
1.336 albertel 1466: #notify course
1.372 albertel 1467: if ( $symb && $env{'request.course.id'} ) {
1.336 albertel 1468: my (undef,%users)=&Apache::lonfeedback::decide_receiver(undef,0,1,1,1);
1.372 albertel 1469: my $declutter=&Apache::lonnet::declutter($env{'request.filename'});
1.336 albertel 1470: my @userlist;
1471: foreach (keys %users) {
1472: my ($user,$domain) = split(/:/, $_);
1473: push(@userlist,"$user\@$domain");
1474: &Apache::lonmsg::user_normal_msg($user,$domain,
1475: "Error [$declutter]",join('<br />',@_));
1476: }
1.372 albertel 1477: if ($env{'request.role.adv'}) {
1.336 albertel 1478: $errormsg=&mt("An error occured while processing this resource. The course personnel ([_1]) and the author have been notified.",join(', ',@userlist));
1479: } else {
1480: $errormsg=&mt("An error occured while processing this resource. The instructor has been notified.");
1481: }
1482: }
1483: push(@Apache::lonxml::error_messages,"<b>$errormsg</b> <br />");
1.52 albertel 1484: }
1.22 albertel 1485: }
1.49 albertel 1486:
1.22 albertel 1487: sub warning {
1.295 albertel 1488: $warningcount++;
1.261 albertel 1489:
1.372 albertel 1490: if ($env{'form.grade_target'} ne 'tex') {
1.348 albertel 1491: if ( &show_error_warn_msg() ) {
1.300 albertel 1492: my $request=$Apache::lonxml::request;
1493: if (!$request) { $request=Apache->request; }
1.309 albertel 1494: push(@Apache::lonxml::warning_messages,
1495: $Apache::lonxml::warnings_error_header.
1496: "<b>W</b>ARNING<b>:</b>".join('<br />',@_)."<br />\n");
1.295 albertel 1497: $Apache::lonxml::warnings_error_header='';
1498: }
1499: }
1.309 albertel 1500: }
1501:
1502: sub info {
1.372 albertel 1503: if ($env{'form.grade_target'} ne 'tex'
1504: && $env{'request.state'} eq 'construct') {
1.309 albertel 1505: push(@Apache::lonxml::info_messages,join('<br />',@_)."<br />\n");
1506: }
1507: }
1508:
1509: sub message_location {
1510: return '__LONCAPA_INTERNAL_MESSAGE_LOCATION__';
1511: }
1512:
1513: sub add_messages {
1514: my ($msg)=@_;
1515: my $result=join(' ',
1516: @Apache::lonxml::info_messages,
1517: @Apache::lonxml::error_messages,
1518: @Apache::lonxml::warning_messages);
1519: undef(@Apache::lonxml::info_messages);
1520: undef(@Apache::lonxml::error_messages);
1521: undef(@Apache::lonxml::warning_messages);
1522: $$msg=~s/__LONCAPA_INTERNAL_MESSAGE_LOCATION__/$result/;
1523: $$msg=~s/__LONCAPA_INTERNAL_MESSAGE_LOCATION__//g;
1.83 albertel 1524: }
1525:
1526: sub get_param {
1.213 albertel 1527: my ($param,$parstack,$safeeval,$context,$case_insensitive) = @_;
1528: if ( ! $context ) { $context = -1; }
1529: my $args ='';
1530: if ( $#$parstack > (-2-$context) ) { $args=$$parstack[$context]; }
1.297 sakharuk 1531: if ( ! $Apache::lonxml::usestyle ) {
1532: $args=$Apache::lonxml::style_values.$args;
1533: }
1.213 albertel 1534: if ( ! $args ) { return undef; }
1535: if ( $case_insensitive ) {
1536: if ($args =~ s/(my \$)(\Q$param\E)(=\")/$1.lc($2).$3/ei) {
1537: return &Apache::run::run("{$args;".'return $'.$param.'}',
1538: $safeeval); #'
1539: } else {
1540: return undef;
1541: }
1542: } else {
1543: if ( $args =~ /my \$\Q$param\E=\"/ ) {
1544: return &Apache::run::run("{$args;".'return $'.$param.'}',
1545: $safeeval); #'
1546: } else {
1547: return undef;
1548: }
1549: }
1.22 albertel 1550: }
1551:
1.132 albertel 1552: sub get_param_var {
1.213 albertel 1553: my ($param,$parstack,$safeeval,$context,$case_insensitive) = @_;
1.132 albertel 1554: if ( ! $context ) { $context = -1; }
1555: my $args ='';
1556: if ( $#$parstack > (-2-$context) ) { $args=$$parstack[$context]; }
1.297 sakharuk 1557: if ( ! $Apache::lonxml::usestyle ) {
1558: $args=$Apache::lonxml::style_values.$args;
1559: }
1.230 albertel 1560: &Apache::lonxml::debug("Args are $args param is $param");
1.213 albertel 1561: if ($case_insensitive) {
1562: if (! ($args=~s/(my \$)(\Q$param\E)(=\")/$1.lc($2).$3/ei)) {
1563: return undef;
1564: }
1565: } elsif ( $args !~ /my \$\Q$param\E=\"/ ) { return undef; }
1.132 albertel 1566: my $value=&Apache::run::run("{$args;".'return $'.$param.'}',$safeeval); #'
1.230 albertel 1567: &Apache::lonxml::debug("first run is $value");
1.341 albertel 1568: if ($value =~ /^[\$\@\%][a-zA-Z_]\w*$/) {
1.230 albertel 1569: &Apache::lonxml::debug("doing second");
1570: my @result=&Apache::run::run("return $value",$safeeval,1);
1571: if (!defined($result[0])) {
1572: return $value
1573: } else {
1574: if (wantarray) { return @result; } else { return $result[0]; }
1575: }
1.132 albertel 1576: } else {
1577: return $value;
1578: }
1579: }
1580:
1.74 albertel 1581: sub register_insert {
1.75 albertel 1582: my @data = split /\n/, &Apache::lonnet::getfile('/home/httpd/lonTabs/insertlist.tab');
1.74 albertel 1583: my $i;
1.76 albertel 1584: my $tagnum=0;
1.74 albertel 1585: my @order;
1586: for ($i=0;$i < $#data; $i++) {
1587: my $line = $data[$i];
1588: if ( $line =~ /^\#/ || $line =~ /^\s*\n/) { next; }
1589: if ( $line =~ /TABLE/ ) { last; }
1.268 bowersj2 1590: my ($tag,$descrip,$color,$function,$show,$helpfile,$helpdesc) = split(/,/, $line);
1.135 albertel 1591: if ($tag) {
1592: $insertlist{"$tagnum.tag"} = $tag;
1593: $insertlist{"$tagnum.description"} = $descrip;
1594: $insertlist{"$tagnum.color"} = $color;
1595: $insertlist{"$tagnum.function"} = $function;
1596: if (!defined($show)) { $show='yes'; }
1597: $insertlist{"$tagnum.show"}= $show;
1.268 bowersj2 1598: $insertlist{"$tagnum.helpfile"} = $helpfile;
1599: $insertlist{"$tagnum.helpdesc"} = $helpdesc;
1.135 albertel 1600: $insertlist{"$tag.num"}=$tagnum;
1601: $tagnum++;
1602: }
1.74 albertel 1603: }
1.76 albertel 1604: $i++; #skipping TABLE line
1605: $tagnum = 0;
1.74 albertel 1606: for (;$i < $#data;$i++) {
1607: my $line = $data[$i];
1.76 albertel 1608: my ($mnemonic,@which) = split(/ +/,$line);
1609: my $tag = $insertlist{"$tagnum.tag"};
1.144 matthew 1610: for (my $j=0;$j <=$#which;$j++) {
1.74 albertel 1611: if ( $which[$j] eq 'Y' ) {
1.76 albertel 1612: if ($insertlist{"$j.show"} ne 'no') {
1613: push(@{ $insertlist{"$tag.which"} },$j);
1614: }
1.74 albertel 1615: }
1616: }
1.76 albertel 1617: $tagnum++;
1.74 albertel 1618: }
1619: }
1.98 albertel 1620:
1621: sub description {
1622: my ($token)=@_;
1.138 albertel 1623: my $tagnum;
1624: my $tag=$token->[1];
1625: foreach my $namespace (reverse @Apache::lonxml::namespace) {
1626: my $testtag=$namespace.'::'.$tag;
1627: $tagnum=$insertlist{"$testtag.num"};
1628: if (defined($tagnum)) { last; }
1629: }
1630: if (!defined ($tagnum)) { $tagnum=$Apache::lonxml::insertlist{"$tag.num"}; }
1631: return $insertlist{$tagnum.'.description'};
1.268 bowersj2 1632: }
1633:
1634: # Returns a list containing the help file, and the description
1635: sub helpinfo {
1636: my ($token)=@_;
1637: my $tagnum;
1638: my $tag=$token->[1];
1639: foreach my $namespace (reverse @Apache::lonxml::namespace) {
1640: my $testtag=$namespace.'::'.$tag;
1641: $tagnum=$insertlist{"$testtag.num"};
1642: if (defined($tagnum)) { last; }
1643: }
1644: if (!defined ($tagnum)) { $tagnum=$Apache::lonxml::insertlist{"$tag.num"}; }
1645: return ($insertlist{$tagnum.'.helpfile'}, $insertlist{$tagnum.'.helpdesc'});
1.98 albertel 1646: }
1.123 albertel 1647:
1648: # ----------------------------------------------------------------- whichuser
1649: # returns a list of $symb, $courseid, $domain, $name that is correct for
1650: # calls to lonnet functions for this setup.
1651: # - looks for form.grade_ parameters
1652: sub whichuser {
1.262 matthew 1653: my ($passedsymb)=@_;
1.245 albertel 1654: my ($symb,$courseid,$domain,$name,$publicuser);
1.372 albertel 1655: if (defined($env{'form.grade_symb'})) {
1.350 albertel 1656: my ($tmp_courseid)=
1657: &Apache::loncommon::get_env_multiple('form.grade_courseid');
1658: my $allowed=&Apache::lonnet::allowed('vgr',$tmp_courseid);
1659: if (!$allowed &&
1.372 albertel 1660: exists($env{'request.course.sec'}) &&
1661: $env{'request.course.sec'} !~ /^\s*$/) {
1.350 albertel 1662: $allowed=&Apache::lonnet::allowed('vgr',$tmp_courseid.
1.372 albertel 1663: '/'.$env{'request.course.sec'});
1.350 albertel 1664: }
1665: if ($allowed) {
1666: ($symb)=&Apache::loncommon::get_env_multiple('form.grade_symb');
1667: $courseid=$tmp_courseid;
1668: ($domain)=&Apache::loncommon::get_env_multiple('form.grade_domain');
1669: ($name)=&Apache::loncommon::get_env_multiple('form.grade_username');
1670: return ($symb,$courseid,$domain,$name,$publicuser);
1671: }
1672: }
1673: if (!$passedsymb) {
1674: $symb=&Apache::lonnet::symbread();
1.134 albertel 1675: } else {
1.350 albertel 1676: $symb=$passedsymb;
1677: }
1.372 albertel 1678: $courseid=$env{'request.course.id'};
1679: $domain=$env{'user.domain'};
1680: $name=$env{'user.name'};
1.350 albertel 1681: if ($name eq 'public' && $domain eq 'public') {
1.372 albertel 1682: if (!defined($env{'form.username'})) {
1683: $env{'form.username'}.=time.rand(10000000);
1.244 albertel 1684: }
1.372 albertel 1685: $name.=$env{'form.username'};
1.123 albertel 1686: }
1.245 albertel 1687: return ($symb,$courseid,$domain,$name,$publicuser);
1.123 albertel 1688: }
1689:
1.1 sakharuk 1690: 1;
1691: __END__
1.68 www 1692:
1693:
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