Annotation of loncom/xml/lonxml.pm, revision 1.393
1.2 sakharuk 1: # The LearningOnline Network with CAPA
1.3 sakharuk 2: # XML Parser Module
1.2 sakharuk 3: #
1.392 albertel 4: # $Id: lonxml.pm,v 1.391 2005/12/06 10:21:18 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 $warningcount @htmlareafields);
1.1 sakharuk 44: use strict;
1.167 albertel 45: use HTML::LCParser();
1.161 albertel 46: use HTML::TreeBuilder();
47: use HTML::Entities();
48: use Safe();
49: use Safe::Hole();
50: use Math::Cephes();
51: use Math::Random();
52: use Opcode();
1.271 www 53: use POSIX qw(strftime);
1.339 albertel 54: use Time::HiRes qw( gettimeofday tv_interval );
1.393 ! albertel 55: use Symbol();
1.266 bowersj2 56:
1.72 albertel 57: sub register {
1.141 albertel 58: my ($space,@taglist) = @_;
59: foreach my $temptag (@taglist) {
60: push(@{ $Apache::lonxml::alltags{$temptag} },$space);
1.72 albertel 61: }
62: }
63:
1.141 albertel 64: sub deregister {
65: my ($space,@taglist) = @_;
66: foreach my $temptag (@taglist) {
67: my $tempspace = $Apache::lonxml::alltags{$temptag}[-1];
68: if ($tempspace eq $space) {
69: pop(@{ $Apache::lonxml::alltags{$temptag} });
70: }
71: }
1.142 albertel 72: #&printalltags();
1.141 albertel 73: }
74:
1.46 www 75: use Apache::Constants qw(:common);
1.161 albertel 76: use Apache::lontexconvert();
77: use Apache::style();
78: use Apache::run();
79: use Apache::londefdef();
80: use Apache::scripttag();
1.285 www 81: use Apache::languagetags();
1.161 albertel 82: use Apache::edit();
1.266 bowersj2 83: use Apache::inputtags();
84: use Apache::outputtags();
1.372 albertel 85: use Apache::lonnet;
1.161 albertel 86: use Apache::File();
87: use Apache::loncommon();
1.198 www 88: use Apache::lonfeedback();
1.200 www 89: use Apache::lonmsg();
1.217 matthew 90: use Apache::loncacc();
1.280 www 91: use Apache::lonlocal;
1.79 www 92:
1.72 albertel 93: #================================================== Main subroutine: xmlparse
94: #debugging control, to turn on debugging modify the correct handler
95: $Apache::lonxml::debug=0;
1.206 albertel 96:
97: # keeps count of the number of warnings and errors generated in a parse
98: $warningcount=0;
99: $errorcount=0;
1.72 albertel 100:
101: #path to the directory containing the file currently being processed
102: @pwd=();
103:
104: #these two are used for capturing a subset of the output for later processing,
105: #don't touch them directly use &startredirection and &endredirection
106: @outputstack = ();
107: $redirection = 0;
108:
109: #controls wheter the <import> tag actually does
110: $import = 1;
111: @extlinks=();
112:
113: # meta mode is a bit weird only some output is to be turned off
114: #<output> tag turns metamode off (defined in londefdef.pm)
115: $metamode = 0;
116:
117: # turns on and of run::evaluate actually derefencing var refs
118: $evaluate = 1;
1.7 albertel 119:
1.74 albertel 120: # data structure for eidt mode, determines what tags can go into what other tags
121: %insertlist=();
1.68 www 122:
1.99 albertel 123: # stores the list of active tag namespaces
1.76 albertel 124: @namespace=();
125:
1.99 albertel 126: # has the dynamic menu been updated to know about this resource
127: $Apache::lonxml::registered=0;
128:
1.172 albertel 129: # a pointer the the Apache request object
130: $Apache::lonxml::request='';
131:
1.216 sakharuk 132: # a problem number counter, and check on ether it is used
1.237 sakharuk 133: $Apache::lonxml::counter=1;
1.204 albertel 134: $Apache::lonxml::counter_changed=0;
135:
1.212 albertel 136: #internal check on whether to look at style defs
137: $Apache::lonxml::usestyle=1;
1.260 albertel 138:
139: #locations used to store the parameter string for style substitutions
140: $Apache::lonxml::style_values='';
141: $Apache::lonxml::style_end_values='';
1.212 albertel 142:
1.281 albertel 143: #array of ssi calls that need to occur after we are done parsing
144: @Apache::lonxml::ssi_info=();
145:
1.282 albertel 146: #should we do the postag variable interpolation
147: $Apache::lonxml::post_evaluate=1;
148:
1.295 albertel 149: #a header message to emit in the case of any generated warning or errors
150: $Apache::lonxml::warnings_error_header='';
151:
1.68 www 152: sub xmlbegin {
1.356 albertel 153: my ($style)=@_;
154: my $output='';
155: @htmlareafields=();
1.372 albertel 156: if ($env{'browser.mathml'}) {
1.356 albertel 157: $output='<?xml version="1.0"?>'
1.357 albertel 158: #.'<?xml-stylesheet type="text/css" href="/adm/MathML/mathml.css"?>'."\n"
159: # .'<!DOCTYPE html SYSTEM "/adm/MathML/mathml.dtd" '
160:
161: # .'<!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">] >'
162: .'<!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 163: .'<html xmlns:math="http://www.w3.org/1998/Math/MathML" '
1.357 albertel 164: .'xmlns="http://www.w3.org/1999/xhtml">';
1.356 albertel 165: } else {
166: $output='<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html>';
167: }
168: if ($style eq 'encode') {
169: $output=&HTML::Entities::encode($output,'<>&"');
170: }
171: return $output;
1.68 www 172: }
173:
174: sub xmlend {
1.335 sakharuk 175: my ($target,$parser)=@_;
1.278 www 176: my $mode='xml';
177: my $status='OPEN';
1.368 albertel 178: if ($Apache::lonhomework::parsing_a_problem ||
179: $Apache::lonhomework::parsing_a_task ) {
1.278 www 180: $mode='problem';
181: $status=$Apache::inputtags::status[-1];
182: }
1.362 matthew 183: my $discussion;
1.379 albertel 184: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
185: ['LONCAPA_INTERNAL_no_discussion']);
1.372 albertel 186: if (! exists($env{'form.LONCAPA_INTERNAL_no_discussion'}) ||
187: $env{'form.LONCAPA_INTERNAL_no_discussion'} ne 'true') {
1.362 matthew 188: $discussion=&Apache::lonfeedback::list_discussion($mode,$status);
189: }
1.334 sakharuk 190: if ($target eq 'tex') {
1.335 sakharuk 191: $discussion.='<tex>\keephidden{ENDOFPROBLEM}\vskip 0.5mm\noindent\makebox[\textwidth/$number_of_columns][b]{\hrulefill}\end{document}</tex>';
1.334 sakharuk 192: &Apache::lonxml::newparser($parser,\$discussion,'');
193: return '';
194: } else {
1.360 albertel 195: return $discussion.&Apache::loncommon::endbodytag();
1.334 sakharuk 196: }
1.119 www 197: }
198:
199: sub tokeninputfield {
1.120 www 200: my $defhost=$Apache::lonnet::perlvar{'lonHostID'};
201: $defhost=~tr/a-z/A-Z/;
1.119 www 202: return (<<ENDINPUTFIELD)
1.226 albertel 203: <script type="text/javascript">
1.120 www 204: function updatetoken() {
205: var comp=new Array;
206: var barcode=unescape(document.tokeninput.barcode.value);
207: comp=barcode.split('*');
208: if (typeof(comp[0])!="undefined") {
209: document.tokeninput.codeone.value=comp[0];
210: }
211: if (typeof(comp[1])!="undefined") {
212: document.tokeninput.codetwo.value=comp[1];
213: }
214: if (typeof(comp[2])!="undefined") {
215: comp[2]=comp[2].toUpperCase();
216: document.tokeninput.codethree.value=comp[2];
217: }
218: document.tokeninput.barcode.value='';
219: }
220: </script>
221: <form method="post" name="tokeninput">
1.119 www 222: <table border="2" bgcolor="#FFFFBB">
223: <tr><th>DocID Checkin</th></tr>
224: <tr><td>
225: <table>
226: <tr>
227: <td>Scan in Barcode</td>
1.120 www 228: <td><input type="text" size="22" name="barcode"
229: onChange="updatetoken()"/></td>
1.119 www 230: </tr>
231: <tr><td><i>or</i> Type in DocID</td>
232: <td>
233: <input type="text" size="5" name="codeone" />
1.120 www 234: <b><font size="+2">*</font></b>
1.119 www 235: <input type="text" size="5" name="codetwo" />
1.120 www 236: <b><font size="+2">*</font></b>
237: <input type="text" size="10" name="codethree" value="$defhost"
238: onChange="this.value=this.value.toUpperCase()" />
1.119 www 239: </td></tr>
240: </table>
241: </td></tr>
242: <tr><td><input type="submit" value="Check in DocID" /></td></tr>
243: </table>
244: </form>
245: ENDINPUTFIELD
1.112 www 246: }
247:
1.116 www 248: sub maketoken {
1.118 www 249: my ($symb,$tuname,$tudom,$tcrsid)=@_;
1.112 www 250: unless ($symb) {
251: $symb=&Apache::lonnet::symbread();
252: }
253: unless ($tuname) {
1.372 albertel 254: $tuname=$env{'user.name'};
255: $tudom=$env{'user.domain'};
256: $tcrsid=$env{'request.course.id'};
1.112 www 257: }
1.116 www 258:
1.118 www 259: return &Apache::lonnet::checkout($symb,$tuname,$tudom,$tcrsid);
260: }
261:
262: sub printtokenheader {
1.133 albertel 263: my ($target,$token,$tsymb,$tcrsid,$tudom,$tuname)=@_;
1.116 www 264: unless ($token) { return ''; }
1.118 www 265:
1.133 albertel 266: my ($symb,$courseid,$domain,$name) = &Apache::lonxml::whichuser();
267: unless ($tsymb) {
268: $tsymb=$symb;
1.118 www 269: }
270: unless ($tuname) {
1.133 albertel 271: $tuname=$name;
272: $tudom=$domain;
273: $tcrsid=$courseid;
1.118 www 274: }
1.114 www 275:
1.390 albertel 276: my $plainname=&Apache::loncommon::plainname($tuname,$tudom);
1.114 www 277:
1.112 www 278: if ($target eq 'web') {
1.145 www 279: my %idhash=&Apache::lonnet::idrget($tudom,($tuname));
1.115 www 280: return
1.221 albertel 281: '<img align="right" src="/cgi-bin/barcode.png?encode='.$token.'" />'.
1.284 www 282: &mt('Checked out for').' '.$plainname.
283: '<br />'.&mt('User').': '.$tuname.' at '.$tudom.
284: '<br />'.&mt('ID').': '.$idhash{$tuname}.
285: '<br />'.&mt('CourseID').': '.$tcrsid.
1.372 albertel 286: '<br />'.&mt('Course').': '.$env{'course.'.$tcrsid.'.description'}.
1.284 www 287: '<br />'.&mt('DocID').': '.$token.
288: '<br />'.&mt('Time').': '.&Apache::lonlocal::locallocaltime().'<hr />';
1.112 www 289: } else {
1.121 albertel 290: return $token;
1.112 www 291: }
1.68 www 292: }
293:
1.356 albertel 294: sub fontsettings {
1.70 www 295: my $headerstring='';
1.372 albertel 296: if (($env{'browser.os'} eq 'mac') && (!$env{'browser.mathml'})) {
1.248 albertel 297: $headerstring.=
1.343 albertel 298: '<meta Content-Type="text/html; charset=x-mac-roman" />';
1.372 albertel 299: } elsif (!$env{'browser.mathml'} && $env{'browser.unicode'}) {
1.248 albertel 300: $headerstring.=
301: '<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />';
1.70 www 302: }
303: return $headerstring;
1.68 www 304: }
305:
1.48 albertel 306: sub printalltags {
307: my $temp;
308: foreach $temp (sort keys %Apache::lonxml::alltags) {
1.141 albertel 309: &Apache::lonxml::debug("$temp -- ".
310: join(',',@{ $Apache::lonxml::alltags{$temp} }));
1.48 albertel 311: }
312: }
1.31 sakharuk 313:
1.3 sakharuk 314: sub xmlparse {
1.172 albertel 315: my ($request,$target,$content_file_string,$safeinit,%style_for_target) = @_;
1.96 albertel 316:
1.172 albertel 317: &setup_globals($request,$target);
1.232 albertel 318: &Apache::inputtags::initialize_inputtags();
1.370 albertel 319: &Apache::bridgetask::initialize_bridgetask();
1.232 albertel 320: &Apache::outputtags::initialize_outputtags();
321: &Apache::edit::initialize_edit();
1.287 albertel 322: &Apache::londefdef::initialize_londefdef();
1.244 albertel 323:
1.178 www 324: #
325: # do we have a course style file?
326: #
327:
1.372 albertel 328: if ($env{'request.course.id'} && $env{'request.state'} ne 'construct') {
1.178 www 329: my $bodytext=
1.372 albertel 330: $env{'course.'.$env{'request.course.id'}.'.default_xml_style'};
1.178 www 331: if ($bodytext) {
1.337 albertel 332: foreach my $file (split(',',$bodytext)) {
333: my $location=&Apache::lonnet::filelocation('',$file);
334: my $styletext=&Apache::lonnet::getfile($location);
335: if ($styletext ne '-1') {
336: %style_for_target = (%style_for_target,
337: &Apache::style::styleparser($target,$styletext));
338: }
339: }
340: }
1.372 albertel 341: } elsif ($env{'construct.style'} && ($env{'request.state'} eq 'construct')) {
342: my $location=&Apache::lonnet::filelocation('',$env{'construct.style'});
1.291 sakharuk 343: my $styletext=&Apache::lonnet::getfile($location);
344: if ($styletext ne '-1') {
345: %style_for_target = (%style_for_target,
346: &Apache::style::styleparser($target,$styletext));
347: }
1.178 www 348: }
1.255 sakharuk 349: #&printalltags();
1.16 albertel 350: my @pars = ();
1.372 albertel 351: my $pwd=$env{'request.filename'};
1.23 albertel 352: $pwd =~ s:/[^/]*$::;
353: &newparser(\@pars,\$content_file_string,$pwd);
1.24 sakharuk 354:
1.3 sakharuk 355: my $safeeval = new Safe;
1.40 albertel 356: my $safehole = new Safe::Hole;
1.82 ng 357: &init_safespace($target,$safeeval,$safehole,$safeinit);
1.3 sakharuk 358: #-------------------- Redefinition of the target in the case of compound target
359:
360: ($target, my @tenta) = split('&&',$target);
361:
1.150 albertel 362: my @stack = ();
1.3 sakharuk 363: my @parstack = ();
1.358 albertel 364: &initdepth();
365: &init_alarm();
1.101 albertel 366: my $finaloutput = &inner_xmlparse($target,\@stack,\@parstack,\@pars,
367: $safeeval,\%style_for_target);
1.255 sakharuk 368:
1.372 albertel 369: if ($env{'request.uri'}) {
370: &writeallows($env{'request.uri'});
1.125 www 371: }
1.281 albertel 372: &do_registered_ssi();
1.204 albertel 373: if ($Apache::lonxml::counter_changed) { &store_counter() }
1.393 ! albertel 374:
! 375: &clean_safespace($safeeval);
! 376:
1.372 albertel 377: if ($env{'form.return_only_error_and_warning_counts'}) {
1.361 www 378: return "$errorcount:$warningcount";
379: }
1.3 sakharuk 380: return $finaloutput;
1.106 www 381: }
382:
1.191 albertel 383: sub latex_special_symbols {
1.272 albertel 384: my ($string,$where)=@_;
1.235 sakharuk 385: if ($where eq 'header') {
1.272 albertel 386: $string =~ s/(\\|_|\^)/ /g;
1.311 albertel 387: $string =~ s/(\$|%|\{|\})/\\$1/g;
1.273 sakharuk 388: $string =~ s/_/ /g;
1.311 albertel 389: $string=&Apache::lonprintout::character_chart($string);
390: # any & or # leftover should be safe to just escape
391: $string=~s/([^\\])\&/$1\\\&/g;
392: $string=~s/([^\\])\#/$1\\\#/g;
1.229 sakharuk 393: } else {
1.312 albertel 394: $string=~s/\\/\\ensuremath{\\backslash}/g;
1.367 albertel 395: $string=~s/\\\%|\%/\\\%/g;
396: $string=~s/\\{|{/\\{/g;
397: $string=~s/\\}|}/\\}/g;
1.378 albertel 398: $string=~s/\\ensuremath\\{\\backslash\\}/\\ensuremath{\\backslash}/g;
1.367 albertel 399: $string=~s/\\\$|\$/\\\$/g;
400: $string=~s/\\\_|\_/\\\_/g;
1.313 albertel 401: $string=~s/([^\\]|^)(\~|\^)/$1\\$2\\strut /g;
1.310 sakharuk 402: $string=~s/(>|<)/\\ensuremath\{$1\}/g; #more or less
1.311 albertel 403: $string=&Apache::lonprintout::character_chart($string);
404: # any & or # leftover should be safe to just escape
1.367 albertel 405: $string=~s/\\\&|\&/\\\&/g;
406: $string=~s/\\\#|\#/\\\#/g;
1.332 sakharuk 407: $string=~s/\|/\$\\mid\$/g;
1.310 sakharuk 408: #single { or } How to escape?
1.229 sakharuk 409: }
1.272 albertel 410: return $string;
1.188 sakharuk 411: }
412:
1.101 albertel 413: sub inner_xmlparse {
414: my ($target,$stack,$parstack,$pars,$safeeval,$style_for_target)=@_;
415: my $finaloutput = '';
416: my $result;
417: my $token;
1.258 albertel 418: my $dontpop=0;
1.389 albertel 419: my $startredirection = $Apache::lonxml::redirection;
1.101 albertel 420: while ( $#$pars > -1 ) {
421: while ($token = $$pars['-1']->get_token) {
1.261 albertel 422: if (($token->[0] eq 'T') || ($token->[0] eq 'C') ) {
1.101 albertel 423: if ($metamode<1) {
1.190 albertel 424: my $text=$token->[1];
1.193 albertel 425: if ($token->[0] eq 'C' && $target eq 'tex') {
1.239 sakharuk 426: $text = '';
427: # $text = '%'.$text."\n";
1.182 sakharuk 428: }
1.190 albertel 429: $result.=$text;
1.101 albertel 430: }
1.261 albertel 431: } elsif (($token->[0] eq 'D')) {
432: if ($metamode<1 && $target eq 'web') {
433: my $text=$token->[1];
434: $result.=$text;
435: }
1.101 albertel 436: } elsif ($token->[0] eq 'PI') {
1.261 albertel 437: if ($metamode<1 && $target eq 'web') {
1.101 albertel 438: $result=$token->[2];
439: }
440: } elsif ($token->[0] eq 'S') {
1.140 albertel 441: # add tag to stack
1.101 albertel 442: push (@$stack,$token->[1]);
443: # add parameters list to another stack
444: push (@$parstack,&parstring($token));
1.140 albertel 445: &increasedepth($token);
1.212 albertel 446: if ($Apache::lonxml::usestyle &&
447: exists($$style_for_target{$token->[1]})) {
448: $Apache::lonxml::usestyle=0;
449: my $string=$$style_for_target{$token->[1]}.
450: '<LONCAPA_INTERNAL_TURN_STYLE_ON />';
451: &Apache::lonxml::newparser($pars,\$string);
1.257 albertel 452: $Apache::lonxml::style_values=$$parstack[-1];
1.259 albertel 453: $Apache::lonxml::style_end_values=$$parstack[-1];
1.101 albertel 454: } else {
455: $result = &callsub("start_$token->[1]", $target, $token, $stack,
456: $parstack, $pars, $safeeval, $style_for_target);
1.140 albertel 457: }
1.101 albertel 458: } elsif ($token->[0] eq 'E') {
1.212 albertel 459: if ($Apache::lonxml::usestyle &&
460: exists($$style_for_target{'/'."$token->[1]"})) {
461: $Apache::lonxml::usestyle=0;
462: my $string=$$style_for_target{'/'.$token->[1]}.
1.258 albertel 463: '<LONCAPA_INTERNAL_TURN_STYLE_ON end="'.$token->[1].'" />';
1.212 albertel 464: &Apache::lonxml::newparser($pars,\$string);
1.259 albertel 465: $Apache::lonxml::style_values=$Apache::lonxml::style_end_values;
466: $Apache::lonxml::style_end_values='';
1.258 albertel 467: $dontpop=1;
1.101 albertel 468: } else {
1.258 albertel 469: #clear out any tags that didn't end
470: while ($token->[1] ne $$stack['-1'] && ($#$stack > -1)) {
471: my $lasttag=$$stack[-1];
1.317 albertel 472: if ($token->[1] =~ /^\Q$lasttag\E$/i) {
1.258 albertel 473: &Apache::lonxml::warning('Using tag </'.$token->[1].'> on line '.$token->[3].' as end tag to <'.$$stack[-1].'>');
474: last;
475: } else {
476: &Apache::lonxml::warning('Found tag </'.$token->[1].'> on line '.$token->[3].' when looking for </'.$$stack[-1].'> in file');
477: &end_tag($stack,$parstack,$token);
478: }
479: }
480: $result = &callsub("end_$token->[1]", $target, $token, $stack,
481: $parstack, $pars,$safeeval, $style_for_target);
1.101 albertel 482: }
483: } else {
484: &Apache::lonxml::error("Unknown token event :$token->[0]:$token->[1]:");
485: }
486: #evaluate variable refs in result
1.282 albertel 487: if ($Apache::lonxml::post_evaluate &&$result ne "") {
1.257 albertel 488: my $extras;
489: if (!$Apache::lonxml::usestyle) {
490: $extras=$Apache::lonxml::style_values;
491: }
1.101 albertel 492: if ( $#$parstack > -1 ) {
1.257 albertel 493: $result=&Apache::run::evaluate($result,$safeeval,$extras.$$parstack[-1]);
1.101 albertel 494: } else {
1.257 albertel 495: $result= &Apache::run::evaluate($result,$safeeval,$extras);
1.101 albertel 496: }
1.163 albertel 497: }
1.282 albertel 498: $Apache::lonxml::post_evaluate=1;
499:
1.190 albertel 500: if (($token->[0] eq 'T') || ($token->[0] eq 'C') || ($token->[0] eq 'D') ) {
1.249 albertel 501: #Style file definitions should be correct
1.250 albertel 502: if ($target eq 'tex' && ($Apache::lonxml::usestyle)) {
1.311 albertel 503: $result=&latex_special_symbols($result);
1.249 albertel 504: }
1.190 albertel 505: }
506:
1.169 albertel 507: if ($Apache::lonxml::redirection) {
508: $Apache::lonxml::outputstack['-1'] .= $result;
509: } else {
510: $finaloutput.=$result;
511: }
512: $result = '';
513:
1.258 albertel 514: if ($token->[0] eq 'E' && !$dontpop) {
1.101 albertel 515: &end_tag($stack,$parstack,$token);
516: }
1.258 albertel 517: $dontpop=0;
1.224 albertel 518: }
1.212 albertel 519: if ($#$pars > -1) {
520: pop @$pars;
521: pop @Apache::lonxml::pwd;
522: }
1.101 albertel 523: }
524:
525: # if ($target eq 'meta') {
526: # $finaloutput.=&endredirection;
527: # }
528:
1.387 albertel 529: if ($target eq 'grade') { &endredirection(); }
1.389 albertel 530: if ( $Apache::lonxml::redirection > $startredirection) {
531: while ($Apache::lonxml::redirection > $startredirection) {
532: $finaloutput .= &endredirection();
1.387 albertel 533: }
534: }
1.101 albertel 535: if (($ENV{'QUERY_STRING'}) && ($target eq 'web')) {
536: $finaloutput=&afterburn($finaloutput);
1.216 sakharuk 537: }
1.101 albertel 538: return $finaloutput;
539: }
1.67 www 540:
1.318 matthew 541: ##
542: ## Looks to see if there is a subroutine defined for this tag. If so, call it,
543: ## otherwise do not call it as we do not know what it is.
544: ##
1.7 albertel 545: sub callsub {
1.84 albertel 546: my ($sub,$target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.7 albertel 547: my $currentstring='';
1.72 albertel 548: my $nodefault;
1.7 albertel 549: {
1.59 albertel 550: my $sub1;
1.7 albertel 551: no strict 'refs';
1.68 www 552: my $tag=$token->[1];
1.236 www 553: # get utterly rid of extended html tags
554: if ($tag=~/^x\-/i) { return ''; }
1.141 albertel 555: my $space=$Apache::lonxml::alltags{$tag}[-1];
1.68 www 556: if (!$space) {
1.141 albertel 557: $tag=~tr/A-Z/a-z/;
1.68 www 558: $sub=~tr/A-Z/a-z/;
1.141 albertel 559: $space=$Apache::lonxml::alltags{$tag}[-1]
1.68 www 560: }
1.97 albertel 561:
562: my $deleted=0;
563: $Apache::lonxml::curdepth=join('_',@Apache::lonxml::depthcounter);
564: if (($token->[0] eq 'S') && ($target eq 'modified')) {
565: $deleted=&Apache::edit::handle_delete($space,$target,$token,$tagstack,
566: $parstack,$parser,$safeeval,
567: $style);
568: }
569: if (!$deleted) {
570: if ($space) {
1.220 albertel 571: #&Apache::lonxml::debug("Calling sub $sub in $space $metamode");
1.97 albertel 572: $sub1="$space\:\:$sub";
573: ($currentstring,$nodefault) = &$sub1($target,$token,$tagstack,
574: $parstack,$parser,$safeeval,
575: $style);
576: } else {
1.318 matthew 577: if ($target eq 'tex') {
578: # throw away tag name
579: return '';
580: }
1.220 albertel 581: #&Apache::lonxml::debug("NOT Calling sub $sub in $space $metamode");
1.97 albertel 582: if ($metamode <1) {
583: if (defined($token->[4]) && ($metamode < 1)) {
584: $currentstring = $token->[4];
585: } else {
586: $currentstring = $token->[2];
587: }
1.62 sakharuk 588: }
1.7 albertel 589: }
1.97 albertel 590: # &Apache::lonxml::debug("nodefalt:$nodefault:");
591: if ($currentstring eq '' && $nodefault eq '') {
592: if ($target eq 'edit') {
1.220 albertel 593: #&Apache::lonxml::debug("doing default edit for $token->[1]");
1.97 albertel 594: if ($token->[0] eq 'S') {
595: $currentstring = &Apache::edit::tag_start($target,$token);
596: } elsif ($token->[0] eq 'E') {
597: $currentstring = &Apache::edit::tag_end($target,$token);
598: }
599: } elsif ($target eq 'modified') {
600: if ($token->[0] eq 'S') {
601: $currentstring = $token->[4];
602: $currentstring.=&Apache::edit::handle_insert();
1.210 www 603: } elsif ($token->[0] eq 'E') {
604: $currentstring = $token->[2];
605: $currentstring.=&Apache::edit::handle_insertafter($token->[1]);
1.97 albertel 606: } else {
607: $currentstring = $token->[2];
608: }
1.72 albertel 609: }
610: }
1.7 albertel 611: }
612: use strict 'refs';
613: }
614: return $currentstring;
1.82 ng 615: }
616:
1.96 albertel 617: sub setup_globals {
1.172 albertel 618: my ($request,$target)=@_;
619: $Apache::lonxml::request=$request;
1.99 albertel 620: $Apache::lonxml::registered = 0;
1.325 www 621: @Apache::lonxml::htmlareafields=();
1.205 www 622: $errorcount=0;
623: $warningcount=0;
1.207 albertel 624: $Apache::lonxml::default_homework_loaded=0;
1.212 albertel 625: $Apache::lonxml::usestyle=1;
1.204 albertel 626: &init_counter();
1.101 albertel 627: @Apache::lonxml::pwd=();
1.124 albertel 628: @Apache::lonxml::extlinks=();
1.281 albertel 629: @Apache::lonxml::ssi_info=();
1.282 albertel 630: $Apache::lonxml::post_evaluate=1;
1.295 albertel 631: $Apache::lonxml::warnings_error_header='';
1.96 albertel 632: if ($target eq 'meta') {
633: $Apache::lonxml::redirection = 0;
634: $Apache::lonxml::metamode = 1;
635: $Apache::lonxml::evaluate = 1;
636: $Apache::lonxml::import = 0;
1.129 albertel 637: } elsif ($target eq 'answer') {
638: $Apache::lonxml::redirection = 0;
639: $Apache::lonxml::metamode = 1;
640: $Apache::lonxml::evaluate = 1;
641: $Apache::lonxml::import = 1;
1.96 albertel 642: } elsif ($target eq 'grade') {
1.387 albertel 643: &startredirection(); #ended in inner_xmlparse on exit
1.96 albertel 644: $Apache::lonxml::metamode = 0;
645: $Apache::lonxml::evaluate = 1;
646: $Apache::lonxml::import = 1;
647: } elsif ($target eq 'modified') {
648: $Apache::lonxml::redirection = 0;
649: $Apache::lonxml::metamode = 0;
650: $Apache::lonxml::evaluate = 0;
651: $Apache::lonxml::import = 0;
652: } elsif ($target eq 'edit') {
653: $Apache::lonxml::redirection = 0;
654: $Apache::lonxml::metamode = 0;
655: $Apache::lonxml::evaluate = 0;
656: $Apache::lonxml::import = 0;
1.163 albertel 657: } elsif ($target eq 'analyze') {
658: $Apache::lonxml::redirection = 0;
659: $Apache::lonxml::metamode = 0;
660: $Apache::lonxml::evaluate = 1;
661: $Apache::lonxml::import = 1;
1.96 albertel 662: } else {
663: $Apache::lonxml::redirection = 0;
664: $Apache::lonxml::metamode = 0;
665: $Apache::lonxml::evaluate = 1;
666: $Apache::lonxml::import = 1;
667: }
668: }
669:
1.82 ng 670: sub init_safespace {
671: my ($target,$safeeval,$safehole,$safeinit) = @_;
1.393 ! albertel 672: $safeeval->deny_only(':dangerous');
! 673: $safeeval->reval('use Math::Complex;');
1.383 albertel 674: $safeeval->permit_only(":default");
1.82 ng 675: $safeeval->permit("entereval");
676: $safeeval->permit(":base_math");
677: $safeeval->permit("sort");
1.286 albertel 678: $safeeval->permit("time");
1.371 albertel 679: $safeeval->deny("rand");
680: $safeeval->deny("srand");
1.82 ng 681: $safeeval->deny(":base_io");
1.102 albertel 682: $safehole->wrap(\&Apache::scripttag::xmlparse,$safeeval,'&xmlparse');
1.251 albertel 683: $safehole->wrap(\&Apache::outputtags::multipart,$safeeval,'&multipart');
1.82 ng 684: $safehole->wrap(\&Apache::lonnet::EXT,$safeeval,'&EXT');
1.324 albertel 685: $safehole->wrap(\&Apache::chemresponse::chem_standard_order,$safeeval,
686: '&chem_standard_order');
1.369 albertel 687: $safehole->wrap(\&Apache::response::check_status,$safeeval,'&check_status');
1.324 albertel 688:
1.82 ng 689: $safehole->wrap(\&Math::Cephes::asin,$safeeval,'&asin');
690: $safehole->wrap(\&Math::Cephes::acos,$safeeval,'&acos');
691: $safehole->wrap(\&Math::Cephes::atan,$safeeval,'&atan');
692: $safehole->wrap(\&Math::Cephes::sinh,$safeeval,'&sinh');
693: $safehole->wrap(\&Math::Cephes::cosh,$safeeval,'&cosh');
694: $safehole->wrap(\&Math::Cephes::tanh,$safeeval,'&tanh');
695: $safehole->wrap(\&Math::Cephes::asinh,$safeeval,'&asinh');
696: $safehole->wrap(\&Math::Cephes::acosh,$safeeval,'&acosh');
697: $safehole->wrap(\&Math::Cephes::atanh,$safeeval,'&atanh');
698: $safehole->wrap(\&Math::Cephes::erf,$safeeval,'&erf');
699: $safehole->wrap(\&Math::Cephes::erfc,$safeeval,'&erfc');
700: $safehole->wrap(\&Math::Cephes::j0,$safeeval,'&j0');
701: $safehole->wrap(\&Math::Cephes::j1,$safeeval,'&j1');
702: $safehole->wrap(\&Math::Cephes::jn,$safeeval,'&jn');
703: $safehole->wrap(\&Math::Cephes::jv,$safeeval,'&jv');
704: $safehole->wrap(\&Math::Cephes::y0,$safeeval,'&y0');
705: $safehole->wrap(\&Math::Cephes::y1,$safeeval,'&y1');
706: $safehole->wrap(\&Math::Cephes::yn,$safeeval,'&yn');
707: $safehole->wrap(\&Math::Cephes::yv,$safeeval,'&yv');
1.215 albertel 708:
709: $safehole->wrap(\&Math::Cephes::bdtr ,$safeeval,'&bdtr' );
710: $safehole->wrap(\&Math::Cephes::bdtrc ,$safeeval,'&bdtrc' );
711: $safehole->wrap(\&Math::Cephes::bdtri ,$safeeval,'&bdtri' );
712: $safehole->wrap(\&Math::Cephes::btdtr ,$safeeval,'&btdtr' );
713: $safehole->wrap(\&Math::Cephes::chdtr ,$safeeval,'&chdtr' );
714: $safehole->wrap(\&Math::Cephes::chdtrc,$safeeval,'&chdtrc');
715: $safehole->wrap(\&Math::Cephes::chdtri,$safeeval,'&chdtri');
716: $safehole->wrap(\&Math::Cephes::fdtr ,$safeeval,'&fdtr' );
717: $safehole->wrap(\&Math::Cephes::fdtrc ,$safeeval,'&fdtrc' );
718: $safehole->wrap(\&Math::Cephes::fdtri ,$safeeval,'&fdtri' );
719: $safehole->wrap(\&Math::Cephes::gdtr ,$safeeval,'&gdtr' );
720: $safehole->wrap(\&Math::Cephes::gdtrc ,$safeeval,'&gdtrc' );
721: $safehole->wrap(\&Math::Cephes::nbdtr ,$safeeval,'&nbdtr' );
722: $safehole->wrap(\&Math::Cephes::nbdtrc,$safeeval,'&nbdtrc');
723: $safehole->wrap(\&Math::Cephes::nbdtri,$safeeval,'&nbdtri');
724: $safehole->wrap(\&Math::Cephes::ndtr ,$safeeval,'&ndtr' );
725: $safehole->wrap(\&Math::Cephes::ndtri ,$safeeval,'&ndtri' );
726: $safehole->wrap(\&Math::Cephes::pdtr ,$safeeval,'&pdtr' );
727: $safehole->wrap(\&Math::Cephes::pdtrc ,$safeeval,'&pdtrc' );
728: $safehole->wrap(\&Math::Cephes::pdtri ,$safeeval,'&pdtri' );
729: $safehole->wrap(\&Math::Cephes::stdtr ,$safeeval,'&stdtr' );
730: $safehole->wrap(\&Math::Cephes::stdtri,$safeeval,'&stdtri');
731:
1.383 albertel 732: $safehole->wrap(\&Math::Cephes::Matrix::mat,$safeeval,'&mat');
733: $safehole->wrap(\&Math::Cephes::Matrix::new,$safeeval,
734: '&Math::Cephes::Matrix::new');
735: $safehole->wrap(\&Math::Cephes::Matrix::coef,$safeeval,
736: '&Math::Cephes::Matrix::coef');
737: $safehole->wrap(\&Math::Cephes::Matrix::clr,$safeeval,
738: '&Math::Cephes::Matrix::clr');
739: $safehole->wrap(\&Math::Cephes::Matrix::add,$safeeval,
740: '&Math::Cephes::Matrix::add');
741: $safehole->wrap(\&Math::Cephes::Matrix::sub,$safeeval,
742: '&Math::Cephes::Matrix::sub');
743: $safehole->wrap(\&Math::Cephes::Matrix::mul,$safeeval,
744: '&Math::Cephes::Matrix::mul');
745: $safehole->wrap(\&Math::Cephes::Matrix::div,$safeeval,
746: '&Math::Cephes::Matrix::div');
747: $safehole->wrap(\&Math::Cephes::Matrix::inv,$safeeval,
748: '&Math::Cephes::Matrix::inv');
749: $safehole->wrap(\&Math::Cephes::Matrix::transp,$safeeval,
750: '&Math::Cephes::Matrix::transp');
751: $safehole->wrap(\&Math::Cephes::Matrix::simq,$safeeval,
752: '&Math::Cephes::Matrix::simq');
753: $safehole->wrap(\&Math::Cephes::Matrix::mat_to_vec,$safeeval,
754: '&Math::Cephes::Matrix::mat_to_vec');
755: $safehole->wrap(\&Math::Cephes::Matrix::vec_to_mat,$safeeval,
756: '&Math::Cephes::Matrix::vec_to_mat');
757: $safehole->wrap(\&Math::Cephes::Matrix::check,$safeeval,
758: '&Math::Cephes::Matrix::check');
759: $safehole->wrap(\&Math::Cephes::Matrix::check,$safeeval,
760: '&Math::Cephes::Matrix::check');
761:
1.215 albertel 762: # $safehole->wrap(\&Math::Cephes::new_fract,$safeeval,'&new_fract');
763: # $safehole->wrap(\&Math::Cephes::radd,$safeeval,'&radd');
764: # $safehole->wrap(\&Math::Cephes::rsub,$safeeval,'&rsub');
765: # $safehole->wrap(\&Math::Cephes::rmul,$safeeval,'&rmul');
766: # $safehole->wrap(\&Math::Cephes::rdiv,$safeeval,'&rdiv');
767: # $safehole->wrap(\&Math::Cephes::euclid,$safeeval,'&euclid');
768:
1.91 ng 769: $safehole->wrap(\&Math::Random::random_beta,$safeeval,'&math_random_beta');
770: $safehole->wrap(\&Math::Random::random_chi_square,$safeeval,'&math_random_chi_square');
771: $safehole->wrap(\&Math::Random::random_exponential,$safeeval,'&math_random_exponential');
772: $safehole->wrap(\&Math::Random::random_f,$safeeval,'&math_random_f');
773: $safehole->wrap(\&Math::Random::random_gamma,$safeeval,'&math_random_gamma');
774: $safehole->wrap(\&Math::Random::random_multivariate_normal,$safeeval,'&math_random_multivariate_normal');
775: $safehole->wrap(\&Math::Random::random_multinomial,$safeeval,'&math_random_multinomial');
776: $safehole->wrap(\&Math::Random::random_noncentral_chi_square,$safeeval,'&math_random_noncentral_chi_square');
777: $safehole->wrap(\&Math::Random::random_noncentral_f,$safeeval,'&math_random_noncentral_f');
778: $safehole->wrap(\&Math::Random::random_normal,$safeeval,'&math_random_normal');
779: $safehole->wrap(\&Math::Random::random_permutation,$safeeval,'&math_random_permutation');
1.93 ng 780: $safehole->wrap(\&Math::Random::random_permuted_index,$safeeval,'&math_random_permuted_index');
1.91 ng 781: $safehole->wrap(\&Math::Random::random_uniform,$safeeval,'&math_random_uniform');
782: $safehole->wrap(\&Math::Random::random_poisson,$safeeval,'&math_random_poisson');
783: $safehole->wrap(\&Math::Random::random_uniform_integer,$safeeval,'&math_random_uniform_integer');
784: $safehole->wrap(\&Math::Random::random_negative_binomial,$safeeval,'&math_random_negative_binomial');
785: $safehole->wrap(\&Math::Random::random_binomial,$safeeval,'&math_random_binomial');
786: $safehole->wrap(\&Math::Random::random_seed_from_phrase,$safeeval,'&random_seed_from_phrase');
787: $safehole->wrap(\&Math::Random::random_set_seed_from_phrase,$safeeval,'&random_set_seed_from_phrase');
788: $safehole->wrap(\&Math::Random::random_get_seed,$safeeval,'&random_get_seed');
789: $safehole->wrap(\&Math::Random::random_set_seed,$safeeval,'&random_set_seed');
1.305 albertel 790: $safehole->wrap(\&Apache::lonxml::error,$safeeval,'&LONCAPA_INTERNAL_ERROR');
1.311 albertel 791: $safehole->wrap(\&Apache::lonxml::debug,$safeeval,'&LONCAPA_INTERNAL_DEBUG');
1.322 albertel 792: $safehole->wrap(\&Apache::caparesponse::get_sigrange,$safeeval,'&LONCAPA_INTERNAL_get_sigrange');
1.91 ng 793:
1.82 ng 794: #need to inspect this class of ops
795: # $safeeval->deny(":base_orig");
1.331 albertel 796: $safeeval->permit("require");
1.91 ng 797: $safeinit .= ';$external::target="'.$target.'";';
1.82 ng 798: &Apache::run::run($safeinit,$safeeval);
1.373 albertel 799: &initialize_rndseed($safeeval);
800: }
1.303 albertel 801:
1.393 ! albertel 802: sub clean_safespace {
! 803: my ($safeeval) = @_;
! 804: delete_package_recurse($safeeval->{Root});
! 805: }
! 806:
! 807: sub delete_package_recurse {
! 808: my ($package) = @_;
! 809: my @subp;
! 810: {
! 811: no strict 'refs';
! 812: while (my ($key,$val) = each(%{*{"$package\::"}})) {
! 813: if (!defined($val)) { next; }
! 814: local (*ENTRY) = $val;
! 815: if (defined *ENTRY{HASH} && $key =~ /::$/ &&
! 816: $key ne "main::" && $key ne "<none>::")
! 817: {
! 818: my ($p) = $package ne "main" ? "$package\::" : "";
! 819: ($p .= $key) =~ s/::$//;
! 820: push(@subp,$p);
! 821: }
! 822: }
! 823: }
! 824: foreach my $p (@subp) {
! 825: delete_package_recurse($p);
! 826: }
! 827: Symbol::delete_package($package);
! 828: }
! 829:
1.373 albertel 830: sub initialize_rndseed {
831: my ($safeeval)=@_;
832: my $rndseed;
833: my ($symb,$courseid,$domain,$name) = &Apache::lonxml::whichuser();
834: $rndseed=&Apache::lonnet::rndseed($symb,$courseid,$domain,$name);
835: my $safeinit = '$external::randomseed="'.$rndseed.'";';
836: &Apache::lonxml::debug("Setting rndseed to $rndseed");
837: &Apache::run::run($safeinit,$safeeval);
1.207 albertel 838: }
839:
840: sub default_homework_load {
841: my ($safeeval)=@_;
842: &Apache::lonxml::debug('Loading default_homework');
843: my $default=&Apache::lonnet::getfile('/home/httpd/html/res/adm/includes/default_homework.lcpm');
1.241 albertel 844: if ($default eq -1) {
1.207 albertel 845: &Apache::lonxml::error("<b>Unable to find <i>default_homework.lcpm</i></b>");
846: } else {
847: &Apache::run::run($default,$safeeval);
848: $Apache::lonxml::default_homework_loaded=1;
849: }
1.17 albertel 850: }
851:
1.358 albertel 852: {
853: my $alarm_depth;
854: sub init_alarm {
855: alarm(0);
856: $alarm_depth=0;
857: }
858:
859: sub start_alarm {
860: if ($alarm_depth<1) {
861: my $old=alarm($Apache::lonnet::perlvar{'lonScriptTimeout'});
862: if ($old) {
863: &Apache::lonxml::error("Cancelled an alarm of $old, this shouldn't occur.");
864: }
865: }
866: $alarm_depth++;
867: }
868:
869: sub end_alarm {
870: $alarm_depth--;
871: if ($alarm_depth<1) { alarm(0); }
872: }
873: }
1.328 albertel 874: my $metamode_was;
1.55 albertel 875: sub startredirection {
1.328 albertel 876: if (!$Apache::lonxml::redirection) {
877: $metamode_was=$Apache::lonxml::metamode;
878: }
879: $Apache::lonxml::metamode=0;
880: $Apache::lonxml::redirection++;
881: push (@Apache::lonxml::outputstack, '');
1.55 albertel 882: }
883:
884: sub endredirection {
1.328 albertel 885: if (!$Apache::lonxml::redirection) {
1.380 www 886: &Apache::lonxml::error("Endredirection was called before a startredirection, perhaps you have unbalanced tags. Some debugging information:".join ":",caller);
1.328 albertel 887: return '';
888: }
889: $Apache::lonxml::redirection--;
890: if (!$Apache::lonxml::redirection) {
891: $Apache::lonxml::metamode=$metamode_was;
892: }
893: pop @Apache::lonxml::outputstack;
1.97 albertel 894: }
895:
896: sub end_tag {
897: my ($tagstack,$parstack,$token)=@_;
898: pop(@$tagstack);
899: pop(@$parstack);
900: &decreasedepth($token);
1.55 albertel 901: }
902:
1.17 albertel 903: sub initdepth {
904: @Apache::lonxml::depthcounter=();
905: $Apache::lonxml::depth=-1;
906: $Apache::lonxml::olddepth=-1;
907: }
908:
1.339 albertel 909: my @timers;
910: my $lasttime;
1.17 albertel 911: sub increasedepth {
1.19 albertel 912: my ($token) = @_;
1.17 albertel 913: $Apache::lonxml::depth++;
914: $Apache::lonxml::depthcounter[$Apache::lonxml::depth]++;
915: if ($Apache::lonxml::depthcounter[$Apache::lonxml::depth]==1) {
916: $Apache::lonxml::olddepth=$Apache::lonxml::depth;
917: }
1.340 albertel 918: my $time;
919: if ($Apache::lonxml::debug eq "1") {
920: push(@timers,[&gettimeofday()]);
921: $time=&tv_interval($lasttime);
922: $lasttime=[&gettimeofday()];
923: }
1.339 albertel 924: my $spacing=' 'x($Apache::lonxml::depth-1);
1.42 albertel 925: my $curdepth=join('_',@Apache::lonxml::depthcounter);
1.339 albertel 926: &Apache::lonxml::debug("s$spacing$Apache::lonxml::depth : $Apache::lonxml::olddepth : $curdepth : $token->[1] : $time : \n");
1.54 albertel 927: #print "<br />s $Apache::lonxml::depth : $Apache::lonxml::olddepth : $curdepth : $token->[1]\n";
1.17 albertel 928: }
929:
930: sub decreasedepth {
1.19 albertel 931: my ($token) = @_;
1.17 albertel 932: $Apache::lonxml::depth--;
1.36 albertel 933: if ($Apache::lonxml::depth<$Apache::lonxml::olddepth-1) {
934: $#Apache::lonxml::depthcounter--;
935: $Apache::lonxml::olddepth=$Apache::lonxml::depth+1;
936: }
1.43 albertel 937: if ( $Apache::lonxml::depth < -1) {
1.280 www 938: &Apache::lonxml::warning(&mt("Missing tags, unable to properly run file."));
1.43 albertel 939: $Apache::lonxml::depth='-1';
940: }
1.340 albertel 941: my ($timer,$time);
942: if ($Apache::lonxml::debug eq "1") {
943: $timer=pop(@timers);
944: $time=&tv_interval($lasttime);
945: $lasttime=[&gettimeofday()];
946: }
1.339 albertel 947: my $spacing=' 'x$Apache::lonxml::depth;
1.42 albertel 948: my $curdepth=join('_',@Apache::lonxml::depthcounter);
1.339 albertel 949: &Apache::lonxml::debug("e$spacing$Apache::lonxml::depth : $Apache::lonxml::olddepth : $curdepth : $token->[1] : $time : ".&tv_interval($timer)."\n");
1.54 albertel 950: #print "<br />e $Apache::lonxml::depth : $Apache::lonxml::olddepth : $token->[1] : $curdepth\n";
1.1 sakharuk 951: }
1.19 albertel 952:
1.180 albertel 953: sub get_all_text_unbalanced {
1.190 albertel 954: #there is a copy of this in lonpublisher.pm
1.326 albertel 955: my($tag,$pars)= @_;
956: my $token;
957: my $result='';
958: $tag='<'.$tag.'>';
959: while ($token = $$pars[-1]->get_token) {
960: if (($token->[0] eq 'T')||($token->[0] eq 'C')||($token->[0] eq 'D')) {
1.386 albertel 961: if ($token->[0] eq 'T' && $token->[2]) {
1.382 albertel 962: $result.='<![CDATA['.$token->[1].']]>';
963: } else {
964: $result.=$token->[1];
965: }
1.326 albertel 966: } elsif ($token->[0] eq 'PI') {
967: $result.=$token->[2];
968: } elsif ($token->[0] eq 'S') {
969: $result.=$token->[4];
970: } elsif ($token->[0] eq 'E') {
971: $result.=$token->[2];
972: }
973: if ($result =~ /\Q$tag\E/is) {
974: ($result,my $redo)=$result =~ /(.*)\Q$tag\E(.*)/is;
975: #&Apache::lonxml::debug('Got a winner with leftovers ::'.$2);
976: #&Apache::lonxml::debug('Result is :'.$1);
977: $redo=$tag.$redo;
978: &Apache::lonxml::newparser($pars,\$redo);
979: last;
980: }
981: }
982: return $result
1.204 albertel 983: }
984:
985: sub increment_counter {
1.247 albertel 986: my ($increment) = @_;
1.289 sakharuk 987: if (defined($increment) && $increment gt 0) {
988: $Apache::lonxml::counter+=$increment;
989: } else {
990: $Apache::lonxml::counter++;
1.247 albertel 991: }
1.289 sakharuk 992: $Apache::lonxml::counter_changed=1;
1.204 albertel 993: }
994:
995: sub init_counter {
1.391 albertel 996: if ($env{'request.state'} eq 'construct') {
997: $Apache::lonxml::counter=1;
998: $Apache::lonxml::counter_changed=1;
999: } elsif (defined($env{'form.counter'})) {
1.372 albertel 1000: $Apache::lonxml::counter=$env{'form.counter'};
1.247 albertel 1001: $Apache::lonxml::counter_changed=0;
1.237 sakharuk 1002: } else {
1.204 albertel 1003: $Apache::lonxml::counter=1;
1.247 albertel 1004: $Apache::lonxml::counter_changed=1;
1.204 albertel 1005: }
1006: }
1007:
1008: sub store_counter {
1009: &Apache::lonnet::appenv(('form.counter' => $Apache::lonxml::counter));
1010: return '';
1.180 albertel 1011: }
1012:
1.19 albertel 1013: sub get_all_text {
1.270 albertel 1014: my($tag,$pars,$style)= @_;
1015: my $gotfullstack=1;
1016: if (ref($pars) ne 'ARRAY') {
1017: $gotfullstack=0;
1018: $pars=[$pars];
1019: }
1020: if (ref($style) ne 'HASH') {
1021: $style={};
1022: }
1023: my $depth=0;
1024: my $token;
1025: my $result='';
1026: if ( $tag =~ m:^/: ) {
1027: my $tag=substr($tag,1);
1028: #&Apache::lonxml::debug("have:$tag:");
1029: my $top_empty=0;
1030: while (($depth >=0) && ($#$pars > -1) && (!$top_empty)) {
1031: while (($depth >=0) && ($token = $$pars[-1]->get_token)) {
1032: #&Apache::lonxml::debug("e token:$token->[0]:$depth:$token->[1]:".$#$pars.":".$#Apache::lonxml::pwd);
1033: if (($token->[0] eq 'T')||($token->[0] eq 'C')||($token->[0] eq 'D')) {
1.382 albertel 1034: if ($token->[2]) {
1035: $result.='<![CDATA['.$token->[1].']]>';
1036: } else {
1037: $result.=$token->[1];
1038: }
1.270 albertel 1039: } elsif ($token->[0] eq 'PI') {
1040: $result.=$token->[2];
1041: } elsif ($token->[0] eq 'S') {
1.316 albertel 1042: if ($token->[1] =~ /^\Q$tag\E$/i) { $depth++; }
1043: if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_ON$/) { $Apache::lonxml::usestyle=1; }
1044: if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_OFF$/) { $Apache::lonxml::usestyle=0; }
1.270 albertel 1045: $result.=$token->[4];
1046: } elsif ($token->[0] eq 'E') {
1.316 albertel 1047: if ( $token->[1] =~ /^\Q$tag\E$/i) { $depth--; }
1.270 albertel 1048: #skip sending back the last end tag
1.283 albertel 1049: if ($depth == 0 && exists($$style{'/'.$token->[1]}) && $Apache::lonxml::usestyle) {
1.270 albertel 1050: my $string=
1051: '<LONCAPA_INTERNAL_TURN_STYLE_OFF end="yes" />'.
1052: $$style{'/'.$token->[1]}.
1053: $token->[2].
1054: '<LONCAPA_INTERNAL_TURN_STYLE_ON />';
1055: &Apache::lonxml::newparser($pars,\$string);
1056: #&Apache::lonxml::debug("reParsing $string");
1057: next;
1058: }
1059: if ($depth > -1) {
1060: $result.=$token->[2];
1061: } else {
1062: $$pars[-1]->unget_token($token);
1063: }
1064: }
1065: }
1066: if (($depth >=0) && ($#$pars == 0) ) { $top_empty=1; }
1067: if (($depth >=0) && ($#$pars > 0) ) {
1068: pop(@$pars);
1069: pop(@Apache::lonxml::pwd);
1070: }
1071: }
1072: if ($top_empty && $depth >= 0) {
1073: #never found the end tag ran out of text, throw error send back blank
1074: &error('Never found end tag for <'.$tag.
1075: '> current string <pre>'.
1.314 albertel 1076: &HTML::Entities::encode($result,'<>&"').
1.270 albertel 1077: '</pre>');
1078: if ($gotfullstack) {
1079: my $newstring='</'.$tag.'>'.$result;
1080: &Apache::lonxml::newparser($pars,\$newstring);
1081: }
1082: $result='';
1083: }
1084: } else {
1085: while ($#$pars > -1) {
1086: while ($token = $$pars[-1]->get_token) {
1087: #&Apache::lonxml::debug("s token:$token->[0]:$depth:$token->[1]");
1088: if (($token->[0] eq 'T')||($token->[0] eq 'C')||
1089: ($token->[0] eq 'D')) {
1.382 albertel 1090: if ($token->[2]) {
1091: $result.='<![CDATA['.$token->[1].']]>';
1092: } else {
1093: $result.=$token->[1];
1094: }
1.270 albertel 1095: } elsif ($token->[0] eq 'PI') {
1096: $result.=$token->[2];
1097: } elsif ($token->[0] eq 'S') {
1.316 albertel 1098: if ( $token->[1] =~ /^\Q$tag\E$/i) {
1.270 albertel 1099: $$pars[-1]->unget_token($token); last;
1100: } else {
1101: $result.=$token->[4];
1102: }
1.316 albertel 1103: if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_ON$/) { $Apache::lonxml::usestyle=1; }
1104: if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_OFF$/) { $Apache::lonxml::usestyle=0; }
1.270 albertel 1105: } elsif ($token->[0] eq 'E') {
1106: $result.=$token->[2];
1107: }
1108: }
1109: if (($#$pars > 0) ) {
1110: pop(@$pars);
1111: pop(@Apache::lonxml::pwd);
1112: } else { last; }
1113: }
1114: }
1115: #&Apache::lonxml::debug("Exit:$result:");
1116: return $result
1.19 albertel 1117: }
1118:
1.23 albertel 1119: sub newparser {
1120: my ($parser,$contentref,$dir) = @_;
1.167 albertel 1121: push (@$parser,HTML::LCParser->new($contentref));
1.365 albertel 1122: $$parser[-1]->xml_mode(1);
1123: $$parser[-1]->marked_sections(1);
1.23 albertel 1124: if ( $dir eq '' ) {
1125: push (@Apache::lonxml::pwd, $Apache::lonxml::pwd[$#Apache::lonxml::pwd]);
1126: } else {
1127: push (@Apache::lonxml::pwd, $dir);
1128: }
1129: }
1.1 sakharuk 1130:
1.8 albertel 1131: sub parstring {
1132: my ($token) = @_;
1133: my $temp='';
1.142 albertel 1134: foreach (@{$token->[3]}) {
1.35 www 1135: unless ($_=~/\W/) {
1.42 albertel 1136: my $val=$token->[2]->{$_};
1.231 albertel 1137: $val =~ s/([\%\@\\\"\'])/\\$1/g;
1.342 albertel 1138: $val =~ s/(\$[^{a-zA-Z_])/\\$1/g;
1.346 albertel 1139: $val =~ s/(\$)$/\\$1/;
1.51 albertel 1140: #if ($val =~ m/^[\%\@]/) { $val="\\".$val; }
1.267 sakharuk 1141: $temp .= "my \$$_=\"$val\";";
1.20 albertel 1142: }
1.142 albertel 1143: }
1.8 albertel 1144: return $temp;
1145: }
1.22 albertel 1146:
1.384 albertel 1147: sub extlink {
1148: my ($res,$exact)=@_;
1149: if (!$exact) {
1150: $res=&Apache::lonnet::hreflocation($Apache::lonxml::pwd[-1],$res);
1151: }
1152: push(@Apache::lonxml::extlinks,$res)
1153: }
1154:
1.34 www 1155: sub writeallows {
1.126 www 1156: unless ($#extlinks>=0) { return; }
1.377 albertel 1157: my $thisurl = &Apache::lonnet::clutter(shift);
1.372 albertel 1158: if ($env{'httpref.'.$thisurl}) {
1159: $thisurl=$env{'httpref.'.$thisurl};
1.111 www 1160: }
1.34 www 1161: my $thisdir=$thisurl;
1162: $thisdir=~s/\/[^\/]+$//;
1163: my %httpref=();
1.142 albertel 1164: foreach (@extlinks) {
1.34 www 1165: $httpref{'httpref.'.
1.125 www 1166: &Apache::lonnet::hreflocation($thisdir,$_)}=$thisurl;
1.142 albertel 1167: }
1.126 www 1168: @extlinks=();
1.34 www 1169: &Apache::lonnet::appenv(%httpref);
1170: }
1171:
1.281 albertel 1172: sub register_ssi {
1173: my ($url,%form)=@_;
1174: push (@Apache::lonxml::ssi_info,{'url'=>$url,'form'=>\%form});
1175: return '';
1176: }
1177:
1178: sub do_registered_ssi {
1179: foreach my $info (@Apache::lonxml::ssi_info) {
1180: my %form=%{ $info->{'form'}};
1181: my $url=$info->{'url'};
1182: &Apache::lonnet::ssi($url,%form);
1183: }
1184: }
1.66 www 1185: #
1186: # Afterburner handles anchors, highlights and links
1187: #
1188: sub afterburn {
1189: my $result=shift;
1.154 albertel 1190: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
1191: ['highlight','anchor','link']);
1.372 albertel 1192: if ($env{'form.highlight'}) {
1193: foreach (split(/\,/,$env{'form.highlight'})) {
1.66 www 1194: my $anchorname=$_;
1195: my $matchthis=$anchorname;
1196: $matchthis=~s/\_+/\\s\+/g;
1.317 albertel 1197: $result=~s/(\Q$matchthis\E)/\<font color=\"red\"\>$1\<\/font\>/gs;
1.142 albertel 1198: }
1.66 www 1199: }
1.372 albertel 1200: if ($env{'form.link'}) {
1201: foreach (split(/\,/,$env{'form.link'})) {
1.66 www 1202: my ($anchorname,$linkurl)=split(/\>/,$_);
1203: my $matchthis=$anchorname;
1204: $matchthis=~s/\_+/\\s\+/g;
1.317 albertel 1205: $result=~s/(\Q$matchthis\E)/\<a href=\"$linkurl\"\>$1\<\/a\>/gs;
1.142 albertel 1206: }
1.66 www 1207: }
1.372 albertel 1208: if ($env{'form.anchor'}) {
1209: my $anchorname=$env{'form.anchor'};
1.66 www 1210: my $matchthis=$anchorname;
1211: $matchthis=~s/\_+/\\s\+/g;
1.317 albertel 1212: $result=~s/(\Q$matchthis\E)/\<a name=\"$anchorname\"\>$1\<\/a\>/s;
1.66 www 1213: $result.=(<<"ENDSCRIPT");
1.226 albertel 1214: <script type="text/javascript">
1.66 www 1215: document.location.hash='$anchorname';
1216: </script>
1217: ENDSCRIPT
1218: }
1219: return $result;
1220: }
1221:
1.79 www 1222: sub storefile {
1223: my ($file,$contents)=@_;
1.290 albertel 1224: &Apache::lonnet::correct_line_ends(\$contents);
1.79 www 1225: if (my $fh=Apache::File->new('>'.$file)) {
1226: print $fh $contents;
1227: $fh->close();
1.271 www 1228: return 1;
1.147 albertel 1229: } else {
1.271 www 1230: &warning("Unable to save file $file");
1231: return 0;
1.79 www 1232: }
1233: }
1234:
1.151 albertel 1235: sub createnewhtml {
1.321 www 1236: my $title=&mt('Title of document goes here');
1237: my $body=&mt('Body of document goes here');
1238: my $filecontents=(<<SIMPLECONTENT);
1.78 www 1239: <html>
1240: <head>
1.321 www 1241: <title>$title</title>
1.78 www 1242: </head>
1243: <body bgcolor="#FFFFFF">
1.321 www 1244: $body
1.78 www 1245: </body>
1246: </html>
1247: SIMPLECONTENT
1.321 www 1248: return $filecontents;
1.151 albertel 1249: }
1250:
1.274 albertel 1251: sub createnewsty {
1252: my $filecontents=(<<SIMPLECONTENT);
1253: <definetag name="">
1254: <render>
1255: <web></web>
1256: <tex></tex>
1257: </render>
1258: </definetag>
1259: SIMPLECONTENT
1260: return $filecontents;
1261: }
1262:
1.147 albertel 1263:
1.151 albertel 1264: sub inserteditinfo {
1.274 albertel 1265: my ($result,$filecontents,$filetype)=@_;
1.314 albertel 1266: $filecontents = &HTML::Entities::encode($filecontents,'<>&"');
1.147 albertel 1267: # my $editheader='<a href="#editsection">Edit below</a><hr />';
1.274 albertel 1268: my $xml_help = '';
1.321 www 1269: my $initialize='';
1.274 albertel 1270: if ($filetype eq 'html') {
1.323 www 1271: my $addbuttons=&Apache::lonhtmlcommon::htmlareaaddbuttons();
1.333 www 1272: $initialize=&Apache::lonhtmlcommon::htmlareaheaders().
1.347 albertel 1273: &Apache::lonhtmlcommon::spellheader();
1274: if (!&Apache::lonhtmlcommon::htmlareablocked() &&
1275: &Apache::lonhtmlcommon::htmlareabrowser()) {
1276: $initialize.=(<<FULLPAGE);
1.321 www 1277: <script type="text/javascript">
1.323 www 1278: $addbuttons
1279:
1.321 www 1280: HTMLArea.loadPlugin("FullPage");
1281:
1282: function initDocument() {
1.323 www 1283: var editor=new HTMLArea("filecont",config);
1.321 www 1284: editor.registerPlugin(FullPage);
1285: editor.generate();
1286: }
1287: </script>
1288: FULLPAGE
1.347 albertel 1289: } else {
1290: $initialize.=(<<FULLPAGE);
1291: <script type="text/javascript">
1292: $addbuttons
1293: function initDocument() {
1294: }
1295: </script>
1296: FULLPAGE
1297: }
1.321 www 1298: $result=~s/\<body([^\>]*)\>/\<body onload="initDocument()" $1\>/i;
1299: $xml_help=&Apache::loncommon::helpLatexCheatsheet();
1.274 albertel 1300: }
1301: my $cleanbut = '';
1.374 www 1302:
1.254 albertel 1303: my $titledisplay=&display_title();
1.280 www 1304: my %lt=&Apache::lonlocal::texthash('st' => 'Save this',
1305: 'vi' => 'View',
1306: 'ed' => 'Edit');
1.161 albertel 1307: my $buttons=(<<BUTTONS);
1.274 albertel 1308: $cleanbut
1.304 matthew 1309: <input type="submit" name="savethisfile" accesskey="s" value="$lt{'st'}" />
1310: <input type="submit" name="viewmode" accesskey="v" value="$lt{'vi'}" />
1.161 albertel 1311: BUTTONS
1.333 www 1312: $buttons.=&Apache::lonhtmlcommon::spelllink('xmledit','filecont');
1.338 albertel 1313: $buttons.=&Apache::lonhtmlcommon::htmlareaselectactive('filecont');
1.78 www 1314: my $editfooter=(<<ENDFOOTER);
1.321 www 1315: $initialize
1.78 www 1316: <hr />
1317: <a name="editsection" />
1.333 www 1318: <form method="post" name="xmledit">
1.240 albertel 1319: $xml_help
1.280 www 1320: <input type="hidden" name="editmode" value="$lt{'ed'}" />
1.170 www 1321: $buttons<br />
1.366 albertel 1322: <textarea style="width:100%" cols="80" rows="44" name="filecont" id="filecont">$filecontents</textarea>
1.170 www 1323: <br />$buttons
1.78 www 1324: <br />
1325: </form>
1.254 albertel 1326: $titledisplay
1.321 www 1327: </body>
1.78 www 1328: ENDFOOTER
1.147 albertel 1329: # $result=~s/(\<body[^\>]*\>)/$1$editheader/is;
1.78 www 1330: $result=~s/(\<\/body\>)/$editfooter/is;
1331: return $result;
1332: }
1333:
1.152 albertel 1334: sub get_target {
1.372 albertel 1335: my $viewgrades=&Apache::lonnet::allowed('vgr',$env{'request.course.id'});
1336: if ( $env{'request.state'} eq 'published') {
1337: if ( defined($env{'form.grade_target'})
1.152 albertel 1338: && ($viewgrades == 'F' )) {
1.372 albertel 1339: return ($env{'form.grade_target'});
1340: } elsif (defined($env{'form.grade_target'})) {
1341: if (($env{'form.grade_target'} eq 'web') ||
1342: ($env{'form.grade_target'} eq 'tex') ) {
1343: return $env{'form.grade_target'}
1.153 albertel 1344: } else {
1345: return 'web';
1346: }
1.152 albertel 1347: } else {
1348: return 'web';
1349: }
1.372 albertel 1350: } elsif ($env{'request.state'} eq 'construct') {
1351: if ( defined($env{'form.grade_target'})) {
1352: return ($env{'form.grade_target'});
1.152 albertel 1353: } else {
1354: return 'web';
1355: }
1356: } else {
1357: return 'web';
1358: }
1359: }
1360:
1.24 sakharuk 1361: sub handler {
1.255 sakharuk 1362: my $request=shift;
1363:
1364: my $target=&get_target();
1365:
1.372 albertel 1366: $Apache::lonxml::debug=$env{'user.debug'};
1.255 sakharuk 1367:
1.364 albertel 1368: &Apache::loncommon::content_type($request,'text/html');
1.255 sakharuk 1369: &Apache::loncommon::no_cache($request);
1.372 albertel 1370: if ($env{'request.state'} eq 'published') {
1.363 albertel 1371: $request->set_last_modified(&Apache::lonnet::metadata($request->uri,
1372: 'lastrevisiondate'));
1373: }
1.255 sakharuk 1374: $request->send_http_header;
1375:
1376: return OK if $request->header_only;
1.68 www 1377:
1378:
1.255 sakharuk 1379: my $file=&Apache::lonnet::filelocation("",$request->uri);
1.274 albertel 1380: my $filetype;
1381: if ($file =~ /\.sty$/) {
1382: $filetype='sty';
1383: } else {
1384: $filetype='html';
1385: }
1.78 www 1386: #
1387: # Edit action? Save file.
1388: #
1.372 albertel 1389: unless ($env{'request.state'} eq 'published') {
1.374 www 1390: if ($env{'form.savethisfile'}) {
1.372 albertel 1391: if (&storefile($file,$env{'form.filecont'})) {
1.309 albertel 1392: &Apache::lonxml::info("<font COLOR=\"#0000FF\">".
1393: &mt('Updated').": ".
1394: &Apache::lonlocal::locallocaltime(time).
1395: " </font>");
1.271 www 1396: }
1.255 sakharuk 1397: }
1398: }
1399: my %mystyle;
1400: my $result = '';
1401: my $filecontents=&Apache::lonnet::getfile($file);
1402: if ($filecontents eq -1) {
1.284 www 1403: my $bodytag=&Apache::loncommon::bodytag('File Error');
1404: my $fnf=&mt('File not found');
1.255 sakharuk 1405: $result=(<<ENDNOTFOUND);
1.78 www 1406: <html>
1407: <head>
1.284 www 1408: <title>$fnf</title>
1.78 www 1409: </head>
1.284 www 1410: $bodytag
1411: <b>$fnf: $file</b>
1.78 www 1412: </body>
1413: </html>
1414: ENDNOTFOUND
1.343 albertel 1415: $filecontents='';
1.372 albertel 1416: if ($env{'request.state'} ne 'published') {
1.274 albertel 1417: if ($filetype eq 'sty') {
1418: $filecontents=&createnewsty();
1419: } else {
1420: $filecontents=&createnewhtml();
1421: }
1.372 albertel 1422: $env{'form.editmode'}='Edit'; #force edit mode
1.255 sakharuk 1423: }
1424: } else {
1.372 albertel 1425: unless ($env{'request.state'} eq 'published') {
1.343 albertel 1426: if ($filecontents=~/BEGIN LON-CAPA Internal/) {
1.381 www 1427: &Apache::lonxml::error(&mt('This file appears to be a rendering of a LON-CAPA resource. If this is correct, this resource will act very oddly and incorrectly.'));
1.343 albertel 1428: }
1.264 www 1429: #
1430: # we are in construction space, see if edit mode forced
1.385 albertel 1431: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
1432: ['editmode']);
1.255 sakharuk 1433: }
1.372 albertel 1434: if (!$env{'form.editmode'} || $env{'form.viewmode'}) {
1.255 sakharuk 1435: $result = &Apache::lonxml::xmlparse($request,$target,$filecontents,
1436: '',%mystyle);
1.368 albertel 1437: undef($Apache::lonhomework::parsing_a_task);
1.385 albertel 1438: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
1439: ['rawmode']);
1440: if ($env{'rawmode'}) { $result = $filecontents; }
1.255 sakharuk 1441: }
1.147 albertel 1442: }
1.255 sakharuk 1443:
1.78 www 1444: #
1445: # Edit action? Insert editing commands
1446: #
1.372 albertel 1447: unless ($env{'request.state'} eq 'published') {
1448: if ($env{'form.editmode'} && (!($env{'form.viewmode'}))) {
1.255 sakharuk 1449: my $displayfile=$request->uri;
1450: $displayfile=~s/^\/[^\/]*//;
1.349 albertel 1451: my $bodytag='<body bgcolor="#FFFFFF">';
1.372 albertel 1452: if ($env{'environment.remote'} eq 'off') {
1.349 albertel 1453: $bodytag=&Apache::loncommon::bodytag();
1454: }
1455: $result='<html>'.$bodytag.
1.309 albertel 1456: &Apache::lonxml::message_location().'<h3>'.
1457: $displayfile.
1.255 sakharuk 1458: '</h3></body></html>';
1.274 albertel 1459: $result=&inserteditinfo($result,$filecontents,$filetype);
1.255 sakharuk 1460: }
1.147 albertel 1461: }
1.274 albertel 1462: if ($filetype eq 'html') { writeallows($request->uri); }
1463:
1.255 sakharuk 1464:
1.309 albertel 1465: &Apache::lonxml::add_messages(\$result);
1.255 sakharuk 1466: $request->print($result);
1467:
1468: return OK;
1.253 albertel 1469: }
1470:
1471: sub display_title {
1472: my $result;
1.372 albertel 1473: if ($env{'request.state'} eq 'construct') {
1.253 albertel 1474: my $title=&Apache::lonnet::gettitle();
1475: if (!defined($title) || $title eq '') {
1.372 albertel 1476: $title = $env{'request.filename'};
1.253 albertel 1477: $title = substr($title, rindex($title, '/') + 1);
1478: }
1479: $result = "<script type='text/javascript'>top.document.title = '$title - LON-CAPA Construction Space';</script>";
1480: }
1481: return $result;
1.24 sakharuk 1482: }
1.147 albertel 1483:
1.22 albertel 1484: sub debug {
1.298 albertel 1485: if ($Apache::lonxml::debug eq "1") {
1486: $|=1;
1.300 albertel 1487: my $request=$Apache::lonxml::request;
1.388 albertel 1488: if (!$request) {
1489: eval { $request=Apache->request; };
1490: }
1491: if (!$request) {
1492: eval { $request=Apache2::RequestUtil->request; };
1493: }
1.314 albertel 1494: $request->print('<font size="-2"><pre>DEBUG:'.&HTML::Entities::encode($_[0],'<>&"')."</pre></font>\n");
1.346 albertel 1495: #&Apache::lonnet::logthis($_[0]);
1.298 albertel 1496: }
1.22 albertel 1497: }
1.49 albertel 1498:
1.348 albertel 1499: sub show_error_warn_msg {
1.372 albertel 1500: if ($env{'request.filename'} eq '/home/httpd/html/res/lib/templates/simpleproblem.problem' &&
1501: &Apache::lonnet::allowed('mdc',$env{'request.course.id'})) {
1.351 albertel 1502: return 1;
1503: }
1.348 albertel 1504: return (($Apache::lonxml::debug eq 1) ||
1.372 albertel 1505: ($env{'request.state'} eq 'construct') ||
1.348 albertel 1506: ($Apache::lonhomework::browse eq 'F'
1507: &&
1.372 albertel 1508: $env{'form.show_errors'} eq 'on'));
1.348 albertel 1509: }
1510:
1.22 albertel 1511: sub error {
1.336 albertel 1512: $errorcount++;
1.348 albertel 1513: if ( &show_error_warn_msg() ) {
1.336 albertel 1514: # If printing in construction space, put the error inside <pre></pre>
1515: push(@Apache::lonxml::error_messages,
1516: $Apache::lonxml::warnings_error_header.
1517: "<b>ERROR:</b>".join("<br />\n",@_)."<br />\n");
1518: $Apache::lonxml::warnings_error_header='';
1519: } else {
1520: my $errormsg;
1521: my ($symb)=&Apache::lonnet::symbread();
1522: if ( !$symb ) {
1523: #public or browsers
1524: $errormsg=&mt("An error occured while processing this resource. The author has been notified.");
1525: }
1526: #notify author
1.372 albertel 1527: &Apache::lonmsg::author_res_msg($env{'request.filename'},join('<br />',@_));
1.336 albertel 1528: #notify course
1.372 albertel 1529: if ( $symb && $env{'request.course.id'} ) {
1.380 www 1530: my $cnum=$env{'course.'.$env{'request.course.id'}.'.num'};
1531: my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
1.336 albertel 1532: my (undef,%users)=&Apache::lonfeedback::decide_receiver(undef,0,1,1,1);
1.372 albertel 1533: my $declutter=&Apache::lonnet::declutter($env{'request.filename'});
1.336 albertel 1534: my @userlist;
1535: foreach (keys %users) {
1536: my ($user,$domain) = split(/:/, $_);
1537: push(@userlist,"$user\@$domain");
1.380 www 1538: my $key=$declutter.'_'.$user.'_'.$domain;
1539: my %lastnotified=&Apache::lonnet::get('nohist_xmlerrornotifications',
1540: [$key],
1541: $cdom,$cnum);
1542: my $now=time;
1543: if ($now-$lastnotified{$key}>86400) {
1544: &Apache::lonmsg::user_normal_msg($user,$domain,
1.336 albertel 1545: "Error [$declutter]",join('<br />',@_));
1.380 www 1546: &Apache::lonnet::put('nohist_xmlerrornotifications',
1547: {$key => $now},
1548: $cdom,$cnum);
1549: }
1.336 albertel 1550: }
1.372 albertel 1551: if ($env{'request.role.adv'}) {
1.336 albertel 1552: $errormsg=&mt("An error occured while processing this resource. The course personnel ([_1]) and the author have been notified.",join(', ',@userlist));
1553: } else {
1554: $errormsg=&mt("An error occured while processing this resource. The instructor has been notified.");
1555: }
1556: }
1557: push(@Apache::lonxml::error_messages,"<b>$errormsg</b> <br />");
1.52 albertel 1558: }
1.22 albertel 1559: }
1.49 albertel 1560:
1.22 albertel 1561: sub warning {
1.295 albertel 1562: $warningcount++;
1.261 albertel 1563:
1.372 albertel 1564: if ($env{'form.grade_target'} ne 'tex') {
1.348 albertel 1565: if ( &show_error_warn_msg() ) {
1.309 albertel 1566: push(@Apache::lonxml::warning_messages,
1567: $Apache::lonxml::warnings_error_header.
1568: "<b>W</b>ARNING<b>:</b>".join('<br />',@_)."<br />\n");
1.295 albertel 1569: $Apache::lonxml::warnings_error_header='';
1570: }
1571: }
1.309 albertel 1572: }
1573:
1574: sub info {
1.372 albertel 1575: if ($env{'form.grade_target'} ne 'tex'
1576: && $env{'request.state'} eq 'construct') {
1.309 albertel 1577: push(@Apache::lonxml::info_messages,join('<br />',@_)."<br />\n");
1578: }
1579: }
1580:
1581: sub message_location {
1582: return '__LONCAPA_INTERNAL_MESSAGE_LOCATION__';
1583: }
1584:
1585: sub add_messages {
1586: my ($msg)=@_;
1587: my $result=join(' ',
1588: @Apache::lonxml::info_messages,
1589: @Apache::lonxml::error_messages,
1590: @Apache::lonxml::warning_messages);
1591: undef(@Apache::lonxml::info_messages);
1592: undef(@Apache::lonxml::error_messages);
1593: undef(@Apache::lonxml::warning_messages);
1594: $$msg=~s/__LONCAPA_INTERNAL_MESSAGE_LOCATION__/$result/;
1595: $$msg=~s/__LONCAPA_INTERNAL_MESSAGE_LOCATION__//g;
1.83 albertel 1596: }
1597:
1598: sub get_param {
1.213 albertel 1599: my ($param,$parstack,$safeeval,$context,$case_insensitive) = @_;
1600: if ( ! $context ) { $context = -1; }
1601: my $args ='';
1602: if ( $#$parstack > (-2-$context) ) { $args=$$parstack[$context]; }
1.297 sakharuk 1603: if ( ! $Apache::lonxml::usestyle ) {
1604: $args=$Apache::lonxml::style_values.$args;
1605: }
1.213 albertel 1606: if ( ! $args ) { return undef; }
1607: if ( $case_insensitive ) {
1608: if ($args =~ s/(my \$)(\Q$param\E)(=\")/$1.lc($2).$3/ei) {
1609: return &Apache::run::run("{$args;".'return $'.$param.'}',
1610: $safeeval); #'
1611: } else {
1612: return undef;
1613: }
1614: } else {
1615: if ( $args =~ /my \$\Q$param\E=\"/ ) {
1616: return &Apache::run::run("{$args;".'return $'.$param.'}',
1617: $safeeval); #'
1618: } else {
1619: return undef;
1620: }
1621: }
1.22 albertel 1622: }
1623:
1.132 albertel 1624: sub get_param_var {
1.213 albertel 1625: my ($param,$parstack,$safeeval,$context,$case_insensitive) = @_;
1.132 albertel 1626: if ( ! $context ) { $context = -1; }
1627: my $args ='';
1628: if ( $#$parstack > (-2-$context) ) { $args=$$parstack[$context]; }
1.297 sakharuk 1629: if ( ! $Apache::lonxml::usestyle ) {
1630: $args=$Apache::lonxml::style_values.$args;
1631: }
1.230 albertel 1632: &Apache::lonxml::debug("Args are $args param is $param");
1.213 albertel 1633: if ($case_insensitive) {
1634: if (! ($args=~s/(my \$)(\Q$param\E)(=\")/$1.lc($2).$3/ei)) {
1635: return undef;
1636: }
1637: } elsif ( $args !~ /my \$\Q$param\E=\"/ ) { return undef; }
1.132 albertel 1638: my $value=&Apache::run::run("{$args;".'return $'.$param.'}',$safeeval); #'
1.230 albertel 1639: &Apache::lonxml::debug("first run is $value");
1.341 albertel 1640: if ($value =~ /^[\$\@\%][a-zA-Z_]\w*$/) {
1.230 albertel 1641: &Apache::lonxml::debug("doing second");
1642: my @result=&Apache::run::run("return $value",$safeeval,1);
1643: if (!defined($result[0])) {
1644: return $value
1645: } else {
1646: if (wantarray) { return @result; } else { return $result[0]; }
1647: }
1.132 albertel 1648: } else {
1649: return $value;
1650: }
1651: }
1652:
1.74 albertel 1653: sub register_insert {
1.75 albertel 1654: my @data = split /\n/, &Apache::lonnet::getfile('/home/httpd/lonTabs/insertlist.tab');
1.74 albertel 1655: my $i;
1.76 albertel 1656: my $tagnum=0;
1.74 albertel 1657: my @order;
1658: for ($i=0;$i < $#data; $i++) {
1659: my $line = $data[$i];
1660: if ( $line =~ /^\#/ || $line =~ /^\s*\n/) { next; }
1661: if ( $line =~ /TABLE/ ) { last; }
1.268 bowersj2 1662: my ($tag,$descrip,$color,$function,$show,$helpfile,$helpdesc) = split(/,/, $line);
1.135 albertel 1663: if ($tag) {
1664: $insertlist{"$tagnum.tag"} = $tag;
1665: $insertlist{"$tagnum.description"} = $descrip;
1666: $insertlist{"$tagnum.color"} = $color;
1667: $insertlist{"$tagnum.function"} = $function;
1668: if (!defined($show)) { $show='yes'; }
1669: $insertlist{"$tagnum.show"}= $show;
1.268 bowersj2 1670: $insertlist{"$tagnum.helpfile"} = $helpfile;
1671: $insertlist{"$tagnum.helpdesc"} = $helpdesc;
1.135 albertel 1672: $insertlist{"$tag.num"}=$tagnum;
1673: $tagnum++;
1674: }
1.74 albertel 1675: }
1.76 albertel 1676: $i++; #skipping TABLE line
1677: $tagnum = 0;
1.74 albertel 1678: for (;$i < $#data;$i++) {
1679: my $line = $data[$i];
1.76 albertel 1680: my ($mnemonic,@which) = split(/ +/,$line);
1681: my $tag = $insertlist{"$tagnum.tag"};
1.144 matthew 1682: for (my $j=0;$j <=$#which;$j++) {
1.74 albertel 1683: if ( $which[$j] eq 'Y' ) {
1.76 albertel 1684: if ($insertlist{"$j.show"} ne 'no') {
1685: push(@{ $insertlist{"$tag.which"} },$j);
1686: }
1.74 albertel 1687: }
1688: }
1.76 albertel 1689: $tagnum++;
1.74 albertel 1690: }
1691: }
1.98 albertel 1692:
1693: sub description {
1694: my ($token)=@_;
1.138 albertel 1695: my $tagnum;
1696: my $tag=$token->[1];
1697: foreach my $namespace (reverse @Apache::lonxml::namespace) {
1698: my $testtag=$namespace.'::'.$tag;
1699: $tagnum=$insertlist{"$testtag.num"};
1700: if (defined($tagnum)) { last; }
1701: }
1702: if (!defined ($tagnum)) { $tagnum=$Apache::lonxml::insertlist{"$tag.num"}; }
1703: return $insertlist{$tagnum.'.description'};
1.268 bowersj2 1704: }
1705:
1706: # Returns a list containing the help file, and the description
1707: sub helpinfo {
1708: my ($token)=@_;
1709: my $tagnum;
1710: my $tag=$token->[1];
1711: foreach my $namespace (reverse @Apache::lonxml::namespace) {
1712: my $testtag=$namespace.'::'.$tag;
1713: $tagnum=$insertlist{"$testtag.num"};
1714: if (defined($tagnum)) { last; }
1715: }
1716: if (!defined ($tagnum)) { $tagnum=$Apache::lonxml::insertlist{"$tag.num"}; }
1717: return ($insertlist{$tagnum.'.helpfile'}, $insertlist{$tagnum.'.helpdesc'});
1.98 albertel 1718: }
1.123 albertel 1719:
1720: # ----------------------------------------------------------------- whichuser
1721: # returns a list of $symb, $courseid, $domain, $name that is correct for
1722: # calls to lonnet functions for this setup.
1723: # - looks for form.grade_ parameters
1724: sub whichuser {
1.262 matthew 1725: my ($passedsymb)=@_;
1.245 albertel 1726: my ($symb,$courseid,$domain,$name,$publicuser);
1.372 albertel 1727: if (defined($env{'form.grade_symb'})) {
1.350 albertel 1728: my ($tmp_courseid)=
1729: &Apache::loncommon::get_env_multiple('form.grade_courseid');
1730: my $allowed=&Apache::lonnet::allowed('vgr',$tmp_courseid);
1731: if (!$allowed &&
1.372 albertel 1732: exists($env{'request.course.sec'}) &&
1733: $env{'request.course.sec'} !~ /^\s*$/) {
1.350 albertel 1734: $allowed=&Apache::lonnet::allowed('vgr',$tmp_courseid.
1.372 albertel 1735: '/'.$env{'request.course.sec'});
1.350 albertel 1736: }
1737: if ($allowed) {
1738: ($symb)=&Apache::loncommon::get_env_multiple('form.grade_symb');
1739: $courseid=$tmp_courseid;
1740: ($domain)=&Apache::loncommon::get_env_multiple('form.grade_domain');
1741: ($name)=&Apache::loncommon::get_env_multiple('form.grade_username');
1742: return ($symb,$courseid,$domain,$name,$publicuser);
1743: }
1744: }
1745: if (!$passedsymb) {
1746: $symb=&Apache::lonnet::symbread();
1.134 albertel 1747: } else {
1.350 albertel 1748: $symb=$passedsymb;
1749: }
1.372 albertel 1750: $courseid=$env{'request.course.id'};
1751: $domain=$env{'user.domain'};
1752: $name=$env{'user.name'};
1.350 albertel 1753: if ($name eq 'public' && $domain eq 'public') {
1.372 albertel 1754: if (!defined($env{'form.username'})) {
1755: $env{'form.username'}.=time.rand(10000000);
1.244 albertel 1756: }
1.372 albertel 1757: $name.=$env{'form.username'};
1.123 albertel 1758: }
1.245 albertel 1759: return ($symb,$courseid,$domain,$name,$publicuser);
1.123 albertel 1760: }
1761:
1.1 sakharuk 1762: 1;
1763: __END__
1.68 www 1764:
1765:
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