Annotation of loncom/xml/lonxml.pm, revision 1.406
1.2 sakharuk 1: # The LearningOnline Network with CAPA
1.3 sakharuk 2: # XML Parser Module
1.2 sakharuk 3: #
1.406 ! albertel 4: # $Id: lonxml.pm,v 1.405 2006/04/13 18:35:17 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:
1.396 foxr 152: # Control whether or not LaTeX symbols should be substituted for their
153: # \ style equivalents...this may be turned off e.g. in an verbatim
154: # environment.
155:
156: $Apache::lonxml::substitute_LaTeX_symbols = 1; # Starts out on.
157:
158: sub enable_LaTeX_substitutions {
159: $Apache::lonxml::substitute_LaTeX_symbols = 1;
160: }
161: sub disable_LaTeX_substitutions {
162: $Apache::lonxml::substitute_LaTeX_symbols = 0;
163: }
164:
1.68 www 165: sub xmlbegin {
1.356 albertel 166: my ($style)=@_;
167: my $output='';
168: @htmlareafields=();
1.372 albertel 169: if ($env{'browser.mathml'}) {
1.356 albertel 170: $output='<?xml version="1.0"?>'
1.357 albertel 171: #.'<?xml-stylesheet type="text/css" href="/adm/MathML/mathml.css"?>'."\n"
172: # .'<!DOCTYPE html SYSTEM "/adm/MathML/mathml.dtd" '
173:
174: # .'<!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">] >'
175: .'<!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 176: .'<html xmlns:math="http://www.w3.org/1998/Math/MathML" '
1.357 albertel 177: .'xmlns="http://www.w3.org/1999/xhtml">';
1.356 albertel 178: } else {
179: $output='<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html>';
180: }
181: if ($style eq 'encode') {
182: $output=&HTML::Entities::encode($output,'<>&"');
183: }
184: return $output;
1.68 www 185: }
186:
187: sub xmlend {
1.335 sakharuk 188: my ($target,$parser)=@_;
1.278 www 189: my $mode='xml';
190: my $status='OPEN';
1.368 albertel 191: if ($Apache::lonhomework::parsing_a_problem ||
192: $Apache::lonhomework::parsing_a_task ) {
1.278 www 193: $mode='problem';
194: $status=$Apache::inputtags::status[-1];
195: }
1.362 matthew 196: my $discussion;
1.379 albertel 197: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
198: ['LONCAPA_INTERNAL_no_discussion']);
1.372 albertel 199: if (! exists($env{'form.LONCAPA_INTERNAL_no_discussion'}) ||
200: $env{'form.LONCAPA_INTERNAL_no_discussion'} ne 'true') {
1.362 matthew 201: $discussion=&Apache::lonfeedback::list_discussion($mode,$status);
202: }
1.334 sakharuk 203: if ($target eq 'tex') {
1.335 sakharuk 204: $discussion.='<tex>\keephidden{ENDOFPROBLEM}\vskip 0.5mm\noindent\makebox[\textwidth/$number_of_columns][b]{\hrulefill}\end{document}</tex>';
1.334 sakharuk 205: &Apache::lonxml::newparser($parser,\$discussion,'');
206: return '';
207: }
1.405 albertel 208:
209: return $discussion.&Apache::loncommon::end_page();
1.119 www 210: }
211:
212: sub tokeninputfield {
1.120 www 213: my $defhost=$Apache::lonnet::perlvar{'lonHostID'};
214: $defhost=~tr/a-z/A-Z/;
1.119 www 215: return (<<ENDINPUTFIELD)
1.226 albertel 216: <script type="text/javascript">
1.120 www 217: function updatetoken() {
218: var comp=new Array;
219: var barcode=unescape(document.tokeninput.barcode.value);
220: comp=barcode.split('*');
221: if (typeof(comp[0])!="undefined") {
222: document.tokeninput.codeone.value=comp[0];
223: }
224: if (typeof(comp[1])!="undefined") {
225: document.tokeninput.codetwo.value=comp[1];
226: }
227: if (typeof(comp[2])!="undefined") {
228: comp[2]=comp[2].toUpperCase();
229: document.tokeninput.codethree.value=comp[2];
230: }
231: document.tokeninput.barcode.value='';
232: }
233: </script>
234: <form method="post" name="tokeninput">
1.119 www 235: <table border="2" bgcolor="#FFFFBB">
236: <tr><th>DocID Checkin</th></tr>
237: <tr><td>
238: <table>
239: <tr>
240: <td>Scan in Barcode</td>
1.120 www 241: <td><input type="text" size="22" name="barcode"
242: onChange="updatetoken()"/></td>
1.119 www 243: </tr>
244: <tr><td><i>or</i> Type in DocID</td>
245: <td>
246: <input type="text" size="5" name="codeone" />
1.120 www 247: <b><font size="+2">*</font></b>
1.119 www 248: <input type="text" size="5" name="codetwo" />
1.120 www 249: <b><font size="+2">*</font></b>
250: <input type="text" size="10" name="codethree" value="$defhost"
251: onChange="this.value=this.value.toUpperCase()" />
1.119 www 252: </td></tr>
253: </table>
254: </td></tr>
255: <tr><td><input type="submit" value="Check in DocID" /></td></tr>
256: </table>
257: </form>
258: ENDINPUTFIELD
1.112 www 259: }
260:
1.116 www 261: sub maketoken {
1.118 www 262: my ($symb,$tuname,$tudom,$tcrsid)=@_;
1.112 www 263: unless ($symb) {
264: $symb=&Apache::lonnet::symbread();
265: }
266: unless ($tuname) {
1.372 albertel 267: $tuname=$env{'user.name'};
268: $tudom=$env{'user.domain'};
269: $tcrsid=$env{'request.course.id'};
1.112 www 270: }
1.116 www 271:
1.118 www 272: return &Apache::lonnet::checkout($symb,$tuname,$tudom,$tcrsid);
273: }
274:
275: sub printtokenheader {
1.133 albertel 276: my ($target,$token,$tsymb,$tcrsid,$tudom,$tuname)=@_;
1.116 www 277: unless ($token) { return ''; }
1.118 www 278:
1.133 albertel 279: my ($symb,$courseid,$domain,$name) = &Apache::lonxml::whichuser();
280: unless ($tsymb) {
281: $tsymb=$symb;
1.118 www 282: }
283: unless ($tuname) {
1.133 albertel 284: $tuname=$name;
285: $tudom=$domain;
286: $tcrsid=$courseid;
1.118 www 287: }
1.114 www 288:
1.390 albertel 289: my $plainname=&Apache::loncommon::plainname($tuname,$tudom);
1.114 www 290:
1.112 www 291: if ($target eq 'web') {
1.145 www 292: my %idhash=&Apache::lonnet::idrget($tudom,($tuname));
1.115 www 293: return
1.221 albertel 294: '<img align="right" src="/cgi-bin/barcode.png?encode='.$token.'" />'.
1.284 www 295: &mt('Checked out for').' '.$plainname.
296: '<br />'.&mt('User').': '.$tuname.' at '.$tudom.
297: '<br />'.&mt('ID').': '.$idhash{$tuname}.
298: '<br />'.&mt('CourseID').': '.$tcrsid.
1.372 albertel 299: '<br />'.&mt('Course').': '.$env{'course.'.$tcrsid.'.description'}.
1.284 www 300: '<br />'.&mt('DocID').': '.$token.
301: '<br />'.&mt('Time').': '.&Apache::lonlocal::locallocaltime().'<hr />';
1.112 www 302: } else {
1.121 albertel 303: return $token;
1.112 www 304: }
1.68 www 305: }
306:
1.356 albertel 307: sub fontsettings {
1.70 www 308: my $headerstring='';
1.372 albertel 309: if (($env{'browser.os'} eq 'mac') && (!$env{'browser.mathml'})) {
1.248 albertel 310: $headerstring.=
1.343 albertel 311: '<meta Content-Type="text/html; charset=x-mac-roman" />';
1.372 albertel 312: } elsif (!$env{'browser.mathml'} && $env{'browser.unicode'}) {
1.248 albertel 313: $headerstring.=
314: '<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />';
1.70 www 315: }
316: return $headerstring;
1.68 www 317: }
318:
1.48 albertel 319: sub printalltags {
320: my $temp;
321: foreach $temp (sort keys %Apache::lonxml::alltags) {
1.141 albertel 322: &Apache::lonxml::debug("$temp -- ".
323: join(',',@{ $Apache::lonxml::alltags{$temp} }));
1.48 albertel 324: }
325: }
1.31 sakharuk 326:
1.3 sakharuk 327: sub xmlparse {
1.172 albertel 328: my ($request,$target,$content_file_string,$safeinit,%style_for_target) = @_;
1.96 albertel 329:
1.172 albertel 330: &setup_globals($request,$target);
1.232 albertel 331: &Apache::inputtags::initialize_inputtags();
1.370 albertel 332: &Apache::bridgetask::initialize_bridgetask();
1.232 albertel 333: &Apache::outputtags::initialize_outputtags();
334: &Apache::edit::initialize_edit();
1.287 albertel 335: &Apache::londefdef::initialize_londefdef();
1.244 albertel 336:
1.178 www 337: #
338: # do we have a course style file?
339: #
340:
1.372 albertel 341: if ($env{'request.course.id'} && $env{'request.state'} ne 'construct') {
1.178 www 342: my $bodytext=
1.372 albertel 343: $env{'course.'.$env{'request.course.id'}.'.default_xml_style'};
1.178 www 344: if ($bodytext) {
1.337 albertel 345: foreach my $file (split(',',$bodytext)) {
346: my $location=&Apache::lonnet::filelocation('',$file);
347: my $styletext=&Apache::lonnet::getfile($location);
348: if ($styletext ne '-1') {
349: %style_for_target = (%style_for_target,
350: &Apache::style::styleparser($target,$styletext));
351: }
352: }
353: }
1.372 albertel 354: } elsif ($env{'construct.style'} && ($env{'request.state'} eq 'construct')) {
355: my $location=&Apache::lonnet::filelocation('',$env{'construct.style'});
1.291 sakharuk 356: my $styletext=&Apache::lonnet::getfile($location);
357: if ($styletext ne '-1') {
358: %style_for_target = (%style_for_target,
359: &Apache::style::styleparser($target,$styletext));
360: }
1.178 www 361: }
1.255 sakharuk 362: #&printalltags();
1.16 albertel 363: my @pars = ();
1.372 albertel 364: my $pwd=$env{'request.filename'};
1.23 albertel 365: $pwd =~ s:/[^/]*$::;
366: &newparser(\@pars,\$content_file_string,$pwd);
1.24 sakharuk 367:
1.3 sakharuk 368: my $safeeval = new Safe;
1.40 albertel 369: my $safehole = new Safe::Hole;
1.82 ng 370: &init_safespace($target,$safeeval,$safehole,$safeinit);
1.3 sakharuk 371: #-------------------- Redefinition of the target in the case of compound target
372:
373: ($target, my @tenta) = split('&&',$target);
374:
1.150 albertel 375: my @stack = ();
1.3 sakharuk 376: my @parstack = ();
1.358 albertel 377: &initdepth();
378: &init_alarm();
1.101 albertel 379: my $finaloutput = &inner_xmlparse($target,\@stack,\@parstack,\@pars,
1.394 albertel 380: $safeeval,\%style_for_target,1);
1.255 sakharuk 381:
1.372 albertel 382: if ($env{'request.uri'}) {
383: &writeallows($env{'request.uri'});
1.125 www 384: }
1.281 albertel 385: &do_registered_ssi();
1.204 albertel 386: if ($Apache::lonxml::counter_changed) { &store_counter() }
1.393 albertel 387:
388: &clean_safespace($safeeval);
389:
1.372 albertel 390: if ($env{'form.return_only_error_and_warning_counts'}) {
1.361 www 391: return "$errorcount:$warningcount";
392: }
1.3 sakharuk 393: return $finaloutput;
1.106 www 394: }
395:
1.191 albertel 396: sub latex_special_symbols {
1.272 albertel 397: my ($string,$where)=@_;
1.396 foxr 398: #
399: # If e.g. in verbatim mode, then don't substitute.
400: # but return original string.
401: #
402: if (!($Apache::lonxml::substitute_LaTeX_symbols)) {
403: return $string;
404: }
1.235 sakharuk 405: if ($where eq 'header') {
1.272 albertel 406: $string =~ s/(\\|_|\^)/ /g;
1.311 albertel 407: $string =~ s/(\$|%|\{|\})/\\$1/g;
1.273 sakharuk 408: $string =~ s/_/ /g;
1.311 albertel 409: $string=&Apache::lonprintout::character_chart($string);
410: # any & or # leftover should be safe to just escape
411: $string=~s/([^\\])\&/$1\\\&/g;
412: $string=~s/([^\\])\#/$1\\\#/g;
1.229 sakharuk 413: } else {
1.312 albertel 414: $string=~s/\\/\\ensuremath{\\backslash}/g;
1.367 albertel 415: $string=~s/\\\%|\%/\\\%/g;
416: $string=~s/\\{|{/\\{/g;
417: $string=~s/\\}|}/\\}/g;
1.378 albertel 418: $string=~s/\\ensuremath\\{\\backslash\\}/\\ensuremath{\\backslash}/g;
1.367 albertel 419: $string=~s/\\\$|\$/\\\$/g;
420: $string=~s/\\\_|\_/\\\_/g;
1.313 albertel 421: $string=~s/([^\\]|^)(\~|\^)/$1\\$2\\strut /g;
1.310 sakharuk 422: $string=~s/(>|<)/\\ensuremath\{$1\}/g; #more or less
1.311 albertel 423: $string=&Apache::lonprintout::character_chart($string);
424: # any & or # leftover should be safe to just escape
1.367 albertel 425: $string=~s/\\\&|\&/\\\&/g;
426: $string=~s/\\\#|\#/\\\#/g;
1.332 sakharuk 427: $string=~s/\|/\$\\mid\$/g;
1.310 sakharuk 428: #single { or } How to escape?
1.229 sakharuk 429: }
1.272 albertel 430: return $string;
1.188 sakharuk 431: }
432:
1.101 albertel 433: sub inner_xmlparse {
1.394 albertel 434: my ($target,$stack,$parstack,$pars,$safeeval,$style_for_target,$start)=@_;
1.101 albertel 435: my $finaloutput = '';
436: my $result;
437: my $token;
1.258 albertel 438: my $dontpop=0;
1.389 albertel 439: my $startredirection = $Apache::lonxml::redirection;
1.101 albertel 440: while ( $#$pars > -1 ) {
441: while ($token = $$pars['-1']->get_token) {
1.261 albertel 442: if (($token->[0] eq 'T') || ($token->[0] eq 'C') ) {
1.101 albertel 443: if ($metamode<1) {
1.190 albertel 444: my $text=$token->[1];
1.193 albertel 445: if ($token->[0] eq 'C' && $target eq 'tex') {
1.239 sakharuk 446: $text = '';
447: # $text = '%'.$text."\n";
1.182 sakharuk 448: }
1.190 albertel 449: $result.=$text;
1.101 albertel 450: }
1.261 albertel 451: } elsif (($token->[0] eq 'D')) {
452: if ($metamode<1 && $target eq 'web') {
453: my $text=$token->[1];
454: $result.=$text;
455: }
1.101 albertel 456: } elsif ($token->[0] eq 'PI') {
1.261 albertel 457: if ($metamode<1 && $target eq 'web') {
1.101 albertel 458: $result=$token->[2];
459: }
460: } elsif ($token->[0] eq 'S') {
1.140 albertel 461: # add tag to stack
1.101 albertel 462: push (@$stack,$token->[1]);
463: # add parameters list to another stack
464: push (@$parstack,&parstring($token));
1.140 albertel 465: &increasedepth($token);
1.212 albertel 466: if ($Apache::lonxml::usestyle &&
467: exists($$style_for_target{$token->[1]})) {
468: $Apache::lonxml::usestyle=0;
469: my $string=$$style_for_target{$token->[1]}.
470: '<LONCAPA_INTERNAL_TURN_STYLE_ON />';
471: &Apache::lonxml::newparser($pars,\$string);
1.257 albertel 472: $Apache::lonxml::style_values=$$parstack[-1];
1.259 albertel 473: $Apache::lonxml::style_end_values=$$parstack[-1];
1.101 albertel 474: } else {
475: $result = &callsub("start_$token->[1]", $target, $token, $stack,
476: $parstack, $pars, $safeeval, $style_for_target);
1.140 albertel 477: }
1.101 albertel 478: } elsif ($token->[0] eq 'E') {
1.212 albertel 479: if ($Apache::lonxml::usestyle &&
480: exists($$style_for_target{'/'."$token->[1]"})) {
481: $Apache::lonxml::usestyle=0;
482: my $string=$$style_for_target{'/'.$token->[1]}.
1.258 albertel 483: '<LONCAPA_INTERNAL_TURN_STYLE_ON end="'.$token->[1].'" />';
1.212 albertel 484: &Apache::lonxml::newparser($pars,\$string);
1.259 albertel 485: $Apache::lonxml::style_values=$Apache::lonxml::style_end_values;
486: $Apache::lonxml::style_end_values='';
1.258 albertel 487: $dontpop=1;
1.101 albertel 488: } else {
1.258 albertel 489: #clear out any tags that didn't end
490: while ($token->[1] ne $$stack['-1'] && ($#$stack > -1)) {
491: my $lasttag=$$stack[-1];
1.317 albertel 492: if ($token->[1] =~ /^\Q$lasttag\E$/i) {
1.258 albertel 493: &Apache::lonxml::warning('Using tag </'.$token->[1].'> on line '.$token->[3].' as end tag to <'.$$stack[-1].'>');
494: last;
495: } else {
496: &Apache::lonxml::warning('Found tag </'.$token->[1].'> on line '.$token->[3].' when looking for </'.$$stack[-1].'> in file');
497: &end_tag($stack,$parstack,$token);
498: }
499: }
500: $result = &callsub("end_$token->[1]", $target, $token, $stack,
501: $parstack, $pars,$safeeval, $style_for_target);
1.101 albertel 502: }
503: } else {
504: &Apache::lonxml::error("Unknown token event :$token->[0]:$token->[1]:");
505: }
506: #evaluate variable refs in result
1.282 albertel 507: if ($Apache::lonxml::post_evaluate &&$result ne "") {
1.257 albertel 508: my $extras;
509: if (!$Apache::lonxml::usestyle) {
510: $extras=$Apache::lonxml::style_values;
511: }
1.101 albertel 512: if ( $#$parstack > -1 ) {
1.257 albertel 513: $result=&Apache::run::evaluate($result,$safeeval,$extras.$$parstack[-1]);
1.101 albertel 514: } else {
1.257 albertel 515: $result= &Apache::run::evaluate($result,$safeeval,$extras);
1.101 albertel 516: }
1.163 albertel 517: }
1.282 albertel 518: $Apache::lonxml::post_evaluate=1;
519:
1.190 albertel 520: if (($token->[0] eq 'T') || ($token->[0] eq 'C') || ($token->[0] eq 'D') ) {
1.249 albertel 521: #Style file definitions should be correct
1.250 albertel 522: if ($target eq 'tex' && ($Apache::lonxml::usestyle)) {
1.311 albertel 523: $result=&latex_special_symbols($result);
1.249 albertel 524: }
1.190 albertel 525: }
526:
1.169 albertel 527: if ($Apache::lonxml::redirection) {
528: $Apache::lonxml::outputstack['-1'] .= $result;
529: } else {
530: $finaloutput.=$result;
531: }
532: $result = '';
533:
1.258 albertel 534: if ($token->[0] eq 'E' && !$dontpop) {
1.101 albertel 535: &end_tag($stack,$parstack,$token);
536: }
1.258 albertel 537: $dontpop=0;
1.224 albertel 538: }
1.212 albertel 539: if ($#$pars > -1) {
540: pop @$pars;
541: pop @Apache::lonxml::pwd;
542: }
1.101 albertel 543: }
544:
545: # if ($target eq 'meta') {
546: # $finaloutput.=&endredirection;
547: # }
548:
1.394 albertel 549: if ( $start && $target eq 'grade') { &endredirection(); }
1.389 albertel 550: if ( $Apache::lonxml::redirection > $startredirection) {
551: while ($Apache::lonxml::redirection > $startredirection) {
552: $finaloutput .= &endredirection();
1.387 albertel 553: }
554: }
1.101 albertel 555: if (($ENV{'QUERY_STRING'}) && ($target eq 'web')) {
556: $finaloutput=&afterburn($finaloutput);
1.216 sakharuk 557: }
1.101 albertel 558: return $finaloutput;
559: }
1.67 www 560:
1.318 matthew 561: ##
562: ## Looks to see if there is a subroutine defined for this tag. If so, call it,
563: ## otherwise do not call it as we do not know what it is.
564: ##
1.7 albertel 565: sub callsub {
1.84 albertel 566: my ($sub,$target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.7 albertel 567: my $currentstring='';
1.72 albertel 568: my $nodefault;
1.7 albertel 569: {
1.59 albertel 570: my $sub1;
1.7 albertel 571: no strict 'refs';
1.68 www 572: my $tag=$token->[1];
1.236 www 573: # get utterly rid of extended html tags
574: if ($tag=~/^x\-/i) { return ''; }
1.141 albertel 575: my $space=$Apache::lonxml::alltags{$tag}[-1];
1.68 www 576: if (!$space) {
1.141 albertel 577: $tag=~tr/A-Z/a-z/;
1.68 www 578: $sub=~tr/A-Z/a-z/;
1.141 albertel 579: $space=$Apache::lonxml::alltags{$tag}[-1]
1.68 www 580: }
1.97 albertel 581:
582: my $deleted=0;
583: $Apache::lonxml::curdepth=join('_',@Apache::lonxml::depthcounter);
584: if (($token->[0] eq 'S') && ($target eq 'modified')) {
585: $deleted=&Apache::edit::handle_delete($space,$target,$token,$tagstack,
586: $parstack,$parser,$safeeval,
587: $style);
588: }
589: if (!$deleted) {
590: if ($space) {
1.220 albertel 591: #&Apache::lonxml::debug("Calling sub $sub in $space $metamode");
1.97 albertel 592: $sub1="$space\:\:$sub";
593: ($currentstring,$nodefault) = &$sub1($target,$token,$tagstack,
594: $parstack,$parser,$safeeval,
595: $style);
596: } else {
1.318 matthew 597: if ($target eq 'tex') {
598: # throw away tag name
599: return '';
600: }
1.220 albertel 601: #&Apache::lonxml::debug("NOT Calling sub $sub in $space $metamode");
1.97 albertel 602: if ($metamode <1) {
603: if (defined($token->[4]) && ($metamode < 1)) {
604: $currentstring = $token->[4];
605: } else {
606: $currentstring = $token->[2];
607: }
1.62 sakharuk 608: }
1.7 albertel 609: }
1.97 albertel 610: # &Apache::lonxml::debug("nodefalt:$nodefault:");
611: if ($currentstring eq '' && $nodefault eq '') {
612: if ($target eq 'edit') {
1.220 albertel 613: #&Apache::lonxml::debug("doing default edit for $token->[1]");
1.97 albertel 614: if ($token->[0] eq 'S') {
615: $currentstring = &Apache::edit::tag_start($target,$token);
616: } elsif ($token->[0] eq 'E') {
617: $currentstring = &Apache::edit::tag_end($target,$token);
618: }
619: } elsif ($target eq 'modified') {
620: if ($token->[0] eq 'S') {
621: $currentstring = $token->[4];
622: $currentstring.=&Apache::edit::handle_insert();
1.210 www 623: } elsif ($token->[0] eq 'E') {
624: $currentstring = $token->[2];
625: $currentstring.=&Apache::edit::handle_insertafter($token->[1]);
1.97 albertel 626: } else {
627: $currentstring = $token->[2];
628: }
1.72 albertel 629: }
630: }
1.7 albertel 631: }
632: use strict 'refs';
633: }
634: return $currentstring;
1.82 ng 635: }
636:
1.96 albertel 637: sub setup_globals {
1.172 albertel 638: my ($request,$target)=@_;
639: $Apache::lonxml::request=$request;
1.99 albertel 640: $Apache::lonxml::registered = 0;
1.325 www 641: @Apache::lonxml::htmlareafields=();
1.205 www 642: $errorcount=0;
643: $warningcount=0;
1.207 albertel 644: $Apache::lonxml::default_homework_loaded=0;
1.212 albertel 645: $Apache::lonxml::usestyle=1;
1.204 albertel 646: &init_counter();
1.101 albertel 647: @Apache::lonxml::pwd=();
1.124 albertel 648: @Apache::lonxml::extlinks=();
1.281 albertel 649: @Apache::lonxml::ssi_info=();
1.282 albertel 650: $Apache::lonxml::post_evaluate=1;
1.295 albertel 651: $Apache::lonxml::warnings_error_header='';
1.397 albertel 652: $Apache::lonxml::substitute_LaTeX_symbols = 1;
1.96 albertel 653: if ($target eq 'meta') {
654: $Apache::lonxml::redirection = 0;
655: $Apache::lonxml::metamode = 1;
656: $Apache::lonxml::evaluate = 1;
657: $Apache::lonxml::import = 0;
1.129 albertel 658: } elsif ($target eq 'answer') {
659: $Apache::lonxml::redirection = 0;
660: $Apache::lonxml::metamode = 1;
661: $Apache::lonxml::evaluate = 1;
662: $Apache::lonxml::import = 1;
1.96 albertel 663: } elsif ($target eq 'grade') {
1.387 albertel 664: &startredirection(); #ended in inner_xmlparse on exit
1.96 albertel 665: $Apache::lonxml::metamode = 0;
666: $Apache::lonxml::evaluate = 1;
667: $Apache::lonxml::import = 1;
668: } elsif ($target eq 'modified') {
669: $Apache::lonxml::redirection = 0;
670: $Apache::lonxml::metamode = 0;
671: $Apache::lonxml::evaluate = 0;
672: $Apache::lonxml::import = 0;
673: } elsif ($target eq 'edit') {
674: $Apache::lonxml::redirection = 0;
675: $Apache::lonxml::metamode = 0;
676: $Apache::lonxml::evaluate = 0;
677: $Apache::lonxml::import = 0;
1.163 albertel 678: } elsif ($target eq 'analyze') {
679: $Apache::lonxml::redirection = 0;
680: $Apache::lonxml::metamode = 0;
681: $Apache::lonxml::evaluate = 1;
682: $Apache::lonxml::import = 1;
1.96 albertel 683: } else {
684: $Apache::lonxml::redirection = 0;
685: $Apache::lonxml::metamode = 0;
686: $Apache::lonxml::evaluate = 1;
687: $Apache::lonxml::import = 1;
688: }
689: }
690:
1.82 ng 691: sub init_safespace {
692: my ($target,$safeeval,$safehole,$safeinit) = @_;
1.393 albertel 693: $safeeval->deny_only(':dangerous');
694: $safeeval->reval('use Math::Complex;');
1.383 albertel 695: $safeeval->permit_only(":default");
1.82 ng 696: $safeeval->permit("entereval");
697: $safeeval->permit(":base_math");
698: $safeeval->permit("sort");
1.286 albertel 699: $safeeval->permit("time");
1.371 albertel 700: $safeeval->deny("rand");
701: $safeeval->deny("srand");
1.82 ng 702: $safeeval->deny(":base_io");
1.102 albertel 703: $safehole->wrap(\&Apache::scripttag::xmlparse,$safeeval,'&xmlparse');
1.251 albertel 704: $safehole->wrap(\&Apache::outputtags::multipart,$safeeval,'&multipart');
1.82 ng 705: $safehole->wrap(\&Apache::lonnet::EXT,$safeeval,'&EXT');
1.324 albertel 706: $safehole->wrap(\&Apache::chemresponse::chem_standard_order,$safeeval,
707: '&chem_standard_order');
1.369 albertel 708: $safehole->wrap(\&Apache::response::check_status,$safeeval,'&check_status');
1.324 albertel 709:
1.82 ng 710: $safehole->wrap(\&Math::Cephes::asin,$safeeval,'&asin');
711: $safehole->wrap(\&Math::Cephes::acos,$safeeval,'&acos');
712: $safehole->wrap(\&Math::Cephes::atan,$safeeval,'&atan');
713: $safehole->wrap(\&Math::Cephes::sinh,$safeeval,'&sinh');
714: $safehole->wrap(\&Math::Cephes::cosh,$safeeval,'&cosh');
715: $safehole->wrap(\&Math::Cephes::tanh,$safeeval,'&tanh');
716: $safehole->wrap(\&Math::Cephes::asinh,$safeeval,'&asinh');
717: $safehole->wrap(\&Math::Cephes::acosh,$safeeval,'&acosh');
718: $safehole->wrap(\&Math::Cephes::atanh,$safeeval,'&atanh');
719: $safehole->wrap(\&Math::Cephes::erf,$safeeval,'&erf');
720: $safehole->wrap(\&Math::Cephes::erfc,$safeeval,'&erfc');
721: $safehole->wrap(\&Math::Cephes::j0,$safeeval,'&j0');
722: $safehole->wrap(\&Math::Cephes::j1,$safeeval,'&j1');
723: $safehole->wrap(\&Math::Cephes::jn,$safeeval,'&jn');
724: $safehole->wrap(\&Math::Cephes::jv,$safeeval,'&jv');
725: $safehole->wrap(\&Math::Cephes::y0,$safeeval,'&y0');
726: $safehole->wrap(\&Math::Cephes::y1,$safeeval,'&y1');
727: $safehole->wrap(\&Math::Cephes::yn,$safeeval,'&yn');
728: $safehole->wrap(\&Math::Cephes::yv,$safeeval,'&yv');
1.215 albertel 729:
730: $safehole->wrap(\&Math::Cephes::bdtr ,$safeeval,'&bdtr' );
731: $safehole->wrap(\&Math::Cephes::bdtrc ,$safeeval,'&bdtrc' );
732: $safehole->wrap(\&Math::Cephes::bdtri ,$safeeval,'&bdtri' );
733: $safehole->wrap(\&Math::Cephes::btdtr ,$safeeval,'&btdtr' );
734: $safehole->wrap(\&Math::Cephes::chdtr ,$safeeval,'&chdtr' );
735: $safehole->wrap(\&Math::Cephes::chdtrc,$safeeval,'&chdtrc');
736: $safehole->wrap(\&Math::Cephes::chdtri,$safeeval,'&chdtri');
737: $safehole->wrap(\&Math::Cephes::fdtr ,$safeeval,'&fdtr' );
738: $safehole->wrap(\&Math::Cephes::fdtrc ,$safeeval,'&fdtrc' );
739: $safehole->wrap(\&Math::Cephes::fdtri ,$safeeval,'&fdtri' );
740: $safehole->wrap(\&Math::Cephes::gdtr ,$safeeval,'&gdtr' );
741: $safehole->wrap(\&Math::Cephes::gdtrc ,$safeeval,'&gdtrc' );
742: $safehole->wrap(\&Math::Cephes::nbdtr ,$safeeval,'&nbdtr' );
743: $safehole->wrap(\&Math::Cephes::nbdtrc,$safeeval,'&nbdtrc');
744: $safehole->wrap(\&Math::Cephes::nbdtri,$safeeval,'&nbdtri');
745: $safehole->wrap(\&Math::Cephes::ndtr ,$safeeval,'&ndtr' );
746: $safehole->wrap(\&Math::Cephes::ndtri ,$safeeval,'&ndtri' );
747: $safehole->wrap(\&Math::Cephes::pdtr ,$safeeval,'&pdtr' );
748: $safehole->wrap(\&Math::Cephes::pdtrc ,$safeeval,'&pdtrc' );
749: $safehole->wrap(\&Math::Cephes::pdtri ,$safeeval,'&pdtri' );
750: $safehole->wrap(\&Math::Cephes::stdtr ,$safeeval,'&stdtr' );
751: $safehole->wrap(\&Math::Cephes::stdtri,$safeeval,'&stdtri');
752:
1.383 albertel 753: $safehole->wrap(\&Math::Cephes::Matrix::mat,$safeeval,'&mat');
754: $safehole->wrap(\&Math::Cephes::Matrix::new,$safeeval,
755: '&Math::Cephes::Matrix::new');
756: $safehole->wrap(\&Math::Cephes::Matrix::coef,$safeeval,
757: '&Math::Cephes::Matrix::coef');
758: $safehole->wrap(\&Math::Cephes::Matrix::clr,$safeeval,
759: '&Math::Cephes::Matrix::clr');
760: $safehole->wrap(\&Math::Cephes::Matrix::add,$safeeval,
761: '&Math::Cephes::Matrix::add');
762: $safehole->wrap(\&Math::Cephes::Matrix::sub,$safeeval,
763: '&Math::Cephes::Matrix::sub');
764: $safehole->wrap(\&Math::Cephes::Matrix::mul,$safeeval,
765: '&Math::Cephes::Matrix::mul');
766: $safehole->wrap(\&Math::Cephes::Matrix::div,$safeeval,
767: '&Math::Cephes::Matrix::div');
768: $safehole->wrap(\&Math::Cephes::Matrix::inv,$safeeval,
769: '&Math::Cephes::Matrix::inv');
770: $safehole->wrap(\&Math::Cephes::Matrix::transp,$safeeval,
771: '&Math::Cephes::Matrix::transp');
772: $safehole->wrap(\&Math::Cephes::Matrix::simq,$safeeval,
773: '&Math::Cephes::Matrix::simq');
774: $safehole->wrap(\&Math::Cephes::Matrix::mat_to_vec,$safeeval,
775: '&Math::Cephes::Matrix::mat_to_vec');
776: $safehole->wrap(\&Math::Cephes::Matrix::vec_to_mat,$safeeval,
777: '&Math::Cephes::Matrix::vec_to_mat');
778: $safehole->wrap(\&Math::Cephes::Matrix::check,$safeeval,
779: '&Math::Cephes::Matrix::check');
780: $safehole->wrap(\&Math::Cephes::Matrix::check,$safeeval,
781: '&Math::Cephes::Matrix::check');
782:
1.215 albertel 783: # $safehole->wrap(\&Math::Cephes::new_fract,$safeeval,'&new_fract');
784: # $safehole->wrap(\&Math::Cephes::radd,$safeeval,'&radd');
785: # $safehole->wrap(\&Math::Cephes::rsub,$safeeval,'&rsub');
786: # $safehole->wrap(\&Math::Cephes::rmul,$safeeval,'&rmul');
787: # $safehole->wrap(\&Math::Cephes::rdiv,$safeeval,'&rdiv');
788: # $safehole->wrap(\&Math::Cephes::euclid,$safeeval,'&euclid');
789:
1.91 ng 790: $safehole->wrap(\&Math::Random::random_beta,$safeeval,'&math_random_beta');
791: $safehole->wrap(\&Math::Random::random_chi_square,$safeeval,'&math_random_chi_square');
792: $safehole->wrap(\&Math::Random::random_exponential,$safeeval,'&math_random_exponential');
793: $safehole->wrap(\&Math::Random::random_f,$safeeval,'&math_random_f');
794: $safehole->wrap(\&Math::Random::random_gamma,$safeeval,'&math_random_gamma');
795: $safehole->wrap(\&Math::Random::random_multivariate_normal,$safeeval,'&math_random_multivariate_normal');
796: $safehole->wrap(\&Math::Random::random_multinomial,$safeeval,'&math_random_multinomial');
797: $safehole->wrap(\&Math::Random::random_noncentral_chi_square,$safeeval,'&math_random_noncentral_chi_square');
798: $safehole->wrap(\&Math::Random::random_noncentral_f,$safeeval,'&math_random_noncentral_f');
799: $safehole->wrap(\&Math::Random::random_normal,$safeeval,'&math_random_normal');
800: $safehole->wrap(\&Math::Random::random_permutation,$safeeval,'&math_random_permutation');
1.93 ng 801: $safehole->wrap(\&Math::Random::random_permuted_index,$safeeval,'&math_random_permuted_index');
1.91 ng 802: $safehole->wrap(\&Math::Random::random_uniform,$safeeval,'&math_random_uniform');
803: $safehole->wrap(\&Math::Random::random_poisson,$safeeval,'&math_random_poisson');
804: $safehole->wrap(\&Math::Random::random_uniform_integer,$safeeval,'&math_random_uniform_integer');
805: $safehole->wrap(\&Math::Random::random_negative_binomial,$safeeval,'&math_random_negative_binomial');
806: $safehole->wrap(\&Math::Random::random_binomial,$safeeval,'&math_random_binomial');
807: $safehole->wrap(\&Math::Random::random_seed_from_phrase,$safeeval,'&random_seed_from_phrase');
808: $safehole->wrap(\&Math::Random::random_set_seed_from_phrase,$safeeval,'&random_set_seed_from_phrase');
809: $safehole->wrap(\&Math::Random::random_get_seed,$safeeval,'&random_get_seed');
810: $safehole->wrap(\&Math::Random::random_set_seed,$safeeval,'&random_set_seed');
1.305 albertel 811: $safehole->wrap(\&Apache::lonxml::error,$safeeval,'&LONCAPA_INTERNAL_ERROR');
1.311 albertel 812: $safehole->wrap(\&Apache::lonxml::debug,$safeeval,'&LONCAPA_INTERNAL_DEBUG');
1.322 albertel 813: $safehole->wrap(\&Apache::caparesponse::get_sigrange,$safeeval,'&LONCAPA_INTERNAL_get_sigrange');
1.91 ng 814:
1.82 ng 815: #need to inspect this class of ops
816: # $safeeval->deny(":base_orig");
1.331 albertel 817: $safeeval->permit("require");
1.91 ng 818: $safeinit .= ';$external::target="'.$target.'";';
1.82 ng 819: &Apache::run::run($safeinit,$safeeval);
1.373 albertel 820: &initialize_rndseed($safeeval);
821: }
1.303 albertel 822:
1.393 albertel 823: sub clean_safespace {
824: my ($safeeval) = @_;
825: delete_package_recurse($safeeval->{Root});
826: }
827:
828: sub delete_package_recurse {
829: my ($package) = @_;
830: my @subp;
831: {
832: no strict 'refs';
833: while (my ($key,$val) = each(%{*{"$package\::"}})) {
834: if (!defined($val)) { next; }
835: local (*ENTRY) = $val;
836: if (defined *ENTRY{HASH} && $key =~ /::$/ &&
837: $key ne "main::" && $key ne "<none>::")
838: {
839: my ($p) = $package ne "main" ? "$package\::" : "";
840: ($p .= $key) =~ s/::$//;
841: push(@subp,$p);
842: }
843: }
844: }
845: foreach my $p (@subp) {
846: delete_package_recurse($p);
847: }
848: Symbol::delete_package($package);
849: }
850:
1.373 albertel 851: sub initialize_rndseed {
852: my ($safeeval)=@_;
853: my $rndseed;
854: my ($symb,$courseid,$domain,$name) = &Apache::lonxml::whichuser();
855: $rndseed=&Apache::lonnet::rndseed($symb,$courseid,$domain,$name);
856: my $safeinit = '$external::randomseed="'.$rndseed.'";';
857: &Apache::lonxml::debug("Setting rndseed to $rndseed");
858: &Apache::run::run($safeinit,$safeeval);
1.207 albertel 859: }
860:
861: sub default_homework_load {
862: my ($safeeval)=@_;
863: &Apache::lonxml::debug('Loading default_homework');
864: my $default=&Apache::lonnet::getfile('/home/httpd/html/res/adm/includes/default_homework.lcpm');
1.241 albertel 865: if ($default eq -1) {
1.207 albertel 866: &Apache::lonxml::error("<b>Unable to find <i>default_homework.lcpm</i></b>");
867: } else {
868: &Apache::run::run($default,$safeeval);
869: $Apache::lonxml::default_homework_loaded=1;
870: }
1.17 albertel 871: }
872:
1.358 albertel 873: {
874: my $alarm_depth;
875: sub init_alarm {
876: alarm(0);
877: $alarm_depth=0;
878: }
879:
880: sub start_alarm {
881: if ($alarm_depth<1) {
882: my $old=alarm($Apache::lonnet::perlvar{'lonScriptTimeout'});
883: if ($old) {
884: &Apache::lonxml::error("Cancelled an alarm of $old, this shouldn't occur.");
885: }
886: }
887: $alarm_depth++;
888: }
889:
890: sub end_alarm {
891: $alarm_depth--;
892: if ($alarm_depth<1) { alarm(0); }
893: }
894: }
1.328 albertel 895: my $metamode_was;
1.55 albertel 896: sub startredirection {
1.328 albertel 897: if (!$Apache::lonxml::redirection) {
898: $metamode_was=$Apache::lonxml::metamode;
899: }
900: $Apache::lonxml::metamode=0;
901: $Apache::lonxml::redirection++;
902: push (@Apache::lonxml::outputstack, '');
1.55 albertel 903: }
904:
905: sub endredirection {
1.328 albertel 906: if (!$Apache::lonxml::redirection) {
1.380 www 907: &Apache::lonxml::error("Endredirection was called before a startredirection, perhaps you have unbalanced tags. Some debugging information:".join ":",caller);
1.328 albertel 908: return '';
909: }
910: $Apache::lonxml::redirection--;
911: if (!$Apache::lonxml::redirection) {
912: $Apache::lonxml::metamode=$metamode_was;
913: }
914: pop @Apache::lonxml::outputstack;
1.97 albertel 915: }
916:
917: sub end_tag {
918: my ($tagstack,$parstack,$token)=@_;
919: pop(@$tagstack);
920: pop(@$parstack);
921: &decreasedepth($token);
1.55 albertel 922: }
923:
1.17 albertel 924: sub initdepth {
925: @Apache::lonxml::depthcounter=();
926: $Apache::lonxml::depth=-1;
927: $Apache::lonxml::olddepth=-1;
928: }
929:
1.339 albertel 930: my @timers;
931: my $lasttime;
1.17 albertel 932: sub increasedepth {
1.19 albertel 933: my ($token) = @_;
1.17 albertel 934: $Apache::lonxml::depth++;
935: $Apache::lonxml::depthcounter[$Apache::lonxml::depth]++;
936: if ($Apache::lonxml::depthcounter[$Apache::lonxml::depth]==1) {
937: $Apache::lonxml::olddepth=$Apache::lonxml::depth;
938: }
1.340 albertel 939: my $time;
940: if ($Apache::lonxml::debug eq "1") {
941: push(@timers,[&gettimeofday()]);
942: $time=&tv_interval($lasttime);
943: $lasttime=[&gettimeofday()];
944: }
1.339 albertel 945: my $spacing=' 'x($Apache::lonxml::depth-1);
1.42 albertel 946: my $curdepth=join('_',@Apache::lonxml::depthcounter);
1.339 albertel 947: &Apache::lonxml::debug("s$spacing$Apache::lonxml::depth : $Apache::lonxml::olddepth : $curdepth : $token->[1] : $time : \n");
1.54 albertel 948: #print "<br />s $Apache::lonxml::depth : $Apache::lonxml::olddepth : $curdepth : $token->[1]\n";
1.17 albertel 949: }
950:
951: sub decreasedepth {
1.19 albertel 952: my ($token) = @_;
1.17 albertel 953: $Apache::lonxml::depth--;
1.36 albertel 954: if ($Apache::lonxml::depth<$Apache::lonxml::olddepth-1) {
955: $#Apache::lonxml::depthcounter--;
956: $Apache::lonxml::olddepth=$Apache::lonxml::depth+1;
957: }
1.43 albertel 958: if ( $Apache::lonxml::depth < -1) {
1.280 www 959: &Apache::lonxml::warning(&mt("Missing tags, unable to properly run file."));
1.43 albertel 960: $Apache::lonxml::depth='-1';
961: }
1.340 albertel 962: my ($timer,$time);
963: if ($Apache::lonxml::debug eq "1") {
964: $timer=pop(@timers);
965: $time=&tv_interval($lasttime);
966: $lasttime=[&gettimeofday()];
967: }
1.339 albertel 968: my $spacing=' 'x$Apache::lonxml::depth;
1.42 albertel 969: my $curdepth=join('_',@Apache::lonxml::depthcounter);
1.339 albertel 970: &Apache::lonxml::debug("e$spacing$Apache::lonxml::depth : $Apache::lonxml::olddepth : $curdepth : $token->[1] : $time : ".&tv_interval($timer)."\n");
1.54 albertel 971: #print "<br />e $Apache::lonxml::depth : $Apache::lonxml::olddepth : $token->[1] : $curdepth\n";
1.1 sakharuk 972: }
1.19 albertel 973:
1.399 albertel 974: sub get_id {
975: my ($parstack,$safeeval)=@_;
976: my $id= &Apache::lonxml::get_param('id',$parstack,$safeeval);
977: if ($env{'request.state'} eq 'construct' && $id =~ /(\.|_)/) {
978: &error(&mt("IDs are not allowed to contain "<tt>_</tt>" or "<tt>.</tt>""));
979: }
980: if ($id =~ /^\s*$/) { $id = $Apache::lonxml::curdepth; }
981: return $id;
982: }
983:
1.180 albertel 984: sub get_all_text_unbalanced {
1.190 albertel 985: #there is a copy of this in lonpublisher.pm
1.326 albertel 986: my($tag,$pars)= @_;
987: my $token;
988: my $result='';
989: $tag='<'.$tag.'>';
990: while ($token = $$pars[-1]->get_token) {
991: if (($token->[0] eq 'T')||($token->[0] eq 'C')||($token->[0] eq 'D')) {
1.386 albertel 992: if ($token->[0] eq 'T' && $token->[2]) {
1.382 albertel 993: $result.='<![CDATA['.$token->[1].']]>';
994: } else {
995: $result.=$token->[1];
996: }
1.326 albertel 997: } elsif ($token->[0] eq 'PI') {
998: $result.=$token->[2];
999: } elsif ($token->[0] eq 'S') {
1000: $result.=$token->[4];
1001: } elsif ($token->[0] eq 'E') {
1002: $result.=$token->[2];
1003: }
1004: if ($result =~ /\Q$tag\E/is) {
1005: ($result,my $redo)=$result =~ /(.*)\Q$tag\E(.*)/is;
1006: #&Apache::lonxml::debug('Got a winner with leftovers ::'.$2);
1007: #&Apache::lonxml::debug('Result is :'.$1);
1008: $redo=$tag.$redo;
1009: &Apache::lonxml::newparser($pars,\$redo);
1010: last;
1011: }
1012: }
1013: return $result
1.204 albertel 1014: }
1015:
1016: sub increment_counter {
1.247 albertel 1017: my ($increment) = @_;
1.289 sakharuk 1018: if (defined($increment) && $increment gt 0) {
1019: $Apache::lonxml::counter+=$increment;
1020: } else {
1021: $Apache::lonxml::counter++;
1.247 albertel 1022: }
1.289 sakharuk 1023: $Apache::lonxml::counter_changed=1;
1.204 albertel 1024: }
1025:
1026: sub init_counter {
1.391 albertel 1027: if ($env{'request.state'} eq 'construct') {
1028: $Apache::lonxml::counter=1;
1029: $Apache::lonxml::counter_changed=1;
1030: } elsif (defined($env{'form.counter'})) {
1.372 albertel 1031: $Apache::lonxml::counter=$env{'form.counter'};
1.247 albertel 1032: $Apache::lonxml::counter_changed=0;
1.237 sakharuk 1033: } else {
1.204 albertel 1034: $Apache::lonxml::counter=1;
1.247 albertel 1035: $Apache::lonxml::counter_changed=1;
1.204 albertel 1036: }
1037: }
1038:
1039: sub store_counter {
1040: &Apache::lonnet::appenv(('form.counter' => $Apache::lonxml::counter));
1.401 albertel 1041: $Apache::lonxml::counter_changed=0;
1.204 albertel 1042: return '';
1.180 albertel 1043: }
1044:
1.398 albertel 1045: {
1046: my $state;
1047: sub clear_problem_counter {
1048: undef($state);
1049: &Apache::lonnet::delenv('form.counter');
1050: &Apache::lonxml::init_counter();
1051: &Apache::lonxml::store_counter();
1052: }
1053:
1054: sub remember_problem_counter {
1055: &Apache::lonnet::transfer_profile_to_env();
1056: $state = $env{'form.counter'};
1057: }
1058:
1059: sub restore_problem_counter {
1060: if (defined($state)) {
1061: &Apache::lonnet::appenv(('form.counter' => $state));
1062: }
1063: }
1.401 albertel 1064: sub get_problem_counter {
1065: if ($Apache::lonxml::counter_changed) { &store_counter() }
1066: &Apache::lonnet::transfer_profile_to_env();
1067: return $env{'form.counter'};
1068: }
1.398 albertel 1069: }
1070:
1.19 albertel 1071: sub get_all_text {
1.270 albertel 1072: my($tag,$pars,$style)= @_;
1073: my $gotfullstack=1;
1074: if (ref($pars) ne 'ARRAY') {
1075: $gotfullstack=0;
1076: $pars=[$pars];
1077: }
1078: if (ref($style) ne 'HASH') {
1079: $style={};
1080: }
1081: my $depth=0;
1082: my $token;
1083: my $result='';
1084: if ( $tag =~ m:^/: ) {
1085: my $tag=substr($tag,1);
1086: #&Apache::lonxml::debug("have:$tag:");
1087: my $top_empty=0;
1088: while (($depth >=0) && ($#$pars > -1) && (!$top_empty)) {
1089: while (($depth >=0) && ($token = $$pars[-1]->get_token)) {
1090: #&Apache::lonxml::debug("e token:$token->[0]:$depth:$token->[1]:".$#$pars.":".$#Apache::lonxml::pwd);
1091: if (($token->[0] eq 'T')||($token->[0] eq 'C')||($token->[0] eq 'D')) {
1.382 albertel 1092: if ($token->[2]) {
1093: $result.='<![CDATA['.$token->[1].']]>';
1094: } else {
1095: $result.=$token->[1];
1096: }
1.270 albertel 1097: } elsif ($token->[0] eq 'PI') {
1098: $result.=$token->[2];
1099: } elsif ($token->[0] eq 'S') {
1.316 albertel 1100: if ($token->[1] =~ /^\Q$tag\E$/i) { $depth++; }
1101: if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_ON$/) { $Apache::lonxml::usestyle=1; }
1102: if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_OFF$/) { $Apache::lonxml::usestyle=0; }
1.270 albertel 1103: $result.=$token->[4];
1104: } elsif ($token->[0] eq 'E') {
1.316 albertel 1105: if ( $token->[1] =~ /^\Q$tag\E$/i) { $depth--; }
1.270 albertel 1106: #skip sending back the last end tag
1.283 albertel 1107: if ($depth == 0 && exists($$style{'/'.$token->[1]}) && $Apache::lonxml::usestyle) {
1.270 albertel 1108: my $string=
1109: '<LONCAPA_INTERNAL_TURN_STYLE_OFF end="yes" />'.
1110: $$style{'/'.$token->[1]}.
1111: $token->[2].
1112: '<LONCAPA_INTERNAL_TURN_STYLE_ON />';
1113: &Apache::lonxml::newparser($pars,\$string);
1114: #&Apache::lonxml::debug("reParsing $string");
1115: next;
1116: }
1117: if ($depth > -1) {
1118: $result.=$token->[2];
1119: } else {
1120: $$pars[-1]->unget_token($token);
1121: }
1122: }
1123: }
1124: if (($depth >=0) && ($#$pars == 0) ) { $top_empty=1; }
1125: if (($depth >=0) && ($#$pars > 0) ) {
1126: pop(@$pars);
1127: pop(@Apache::lonxml::pwd);
1128: }
1129: }
1130: if ($top_empty && $depth >= 0) {
1131: #never found the end tag ran out of text, throw error send back blank
1132: &error('Never found end tag for <'.$tag.
1133: '> current string <pre>'.
1.314 albertel 1134: &HTML::Entities::encode($result,'<>&"').
1.270 albertel 1135: '</pre>');
1136: if ($gotfullstack) {
1137: my $newstring='</'.$tag.'>'.$result;
1138: &Apache::lonxml::newparser($pars,\$newstring);
1139: }
1140: $result='';
1141: }
1142: } else {
1143: while ($#$pars > -1) {
1144: while ($token = $$pars[-1]->get_token) {
1145: #&Apache::lonxml::debug("s token:$token->[0]:$depth:$token->[1]");
1146: if (($token->[0] eq 'T')||($token->[0] eq 'C')||
1147: ($token->[0] eq 'D')) {
1.382 albertel 1148: if ($token->[2]) {
1149: $result.='<![CDATA['.$token->[1].']]>';
1150: } else {
1151: $result.=$token->[1];
1152: }
1.270 albertel 1153: } elsif ($token->[0] eq 'PI') {
1154: $result.=$token->[2];
1155: } elsif ($token->[0] eq 'S') {
1.316 albertel 1156: if ( $token->[1] =~ /^\Q$tag\E$/i) {
1.270 albertel 1157: $$pars[-1]->unget_token($token); last;
1158: } else {
1159: $result.=$token->[4];
1160: }
1.316 albertel 1161: if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_ON$/) { $Apache::lonxml::usestyle=1; }
1162: if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_OFF$/) { $Apache::lonxml::usestyle=0; }
1.270 albertel 1163: } elsif ($token->[0] eq 'E') {
1164: $result.=$token->[2];
1165: }
1166: }
1167: if (($#$pars > 0) ) {
1168: pop(@$pars);
1169: pop(@Apache::lonxml::pwd);
1170: } else { last; }
1171: }
1172: }
1173: #&Apache::lonxml::debug("Exit:$result:");
1174: return $result
1.19 albertel 1175: }
1176:
1.23 albertel 1177: sub newparser {
1178: my ($parser,$contentref,$dir) = @_;
1.167 albertel 1179: push (@$parser,HTML::LCParser->new($contentref));
1.365 albertel 1180: $$parser[-1]->xml_mode(1);
1181: $$parser[-1]->marked_sections(1);
1.23 albertel 1182: if ( $dir eq '' ) {
1183: push (@Apache::lonxml::pwd, $Apache::lonxml::pwd[$#Apache::lonxml::pwd]);
1184: } else {
1185: push (@Apache::lonxml::pwd, $dir);
1186: }
1187: }
1.1 sakharuk 1188:
1.8 albertel 1189: sub parstring {
1190: my ($token) = @_;
1191: my $temp='';
1.142 albertel 1192: foreach (@{$token->[3]}) {
1.35 www 1193: unless ($_=~/\W/) {
1.42 albertel 1194: my $val=$token->[2]->{$_};
1.231 albertel 1195: $val =~ s/([\%\@\\\"\'])/\\$1/g;
1.342 albertel 1196: $val =~ s/(\$[^{a-zA-Z_])/\\$1/g;
1.346 albertel 1197: $val =~ s/(\$)$/\\$1/;
1.51 albertel 1198: #if ($val =~ m/^[\%\@]/) { $val="\\".$val; }
1.267 sakharuk 1199: $temp .= "my \$$_=\"$val\";";
1.20 albertel 1200: }
1.142 albertel 1201: }
1.8 albertel 1202: return $temp;
1203: }
1.22 albertel 1204:
1.384 albertel 1205: sub extlink {
1206: my ($res,$exact)=@_;
1207: if (!$exact) {
1208: $res=&Apache::lonnet::hreflocation($Apache::lonxml::pwd[-1],$res);
1209: }
1210: push(@Apache::lonxml::extlinks,$res)
1211: }
1212:
1.34 www 1213: sub writeallows {
1.126 www 1214: unless ($#extlinks>=0) { return; }
1.377 albertel 1215: my $thisurl = &Apache::lonnet::clutter(shift);
1.372 albertel 1216: if ($env{'httpref.'.$thisurl}) {
1217: $thisurl=$env{'httpref.'.$thisurl};
1.111 www 1218: }
1.34 www 1219: my $thisdir=$thisurl;
1220: $thisdir=~s/\/[^\/]+$//;
1221: my %httpref=();
1.142 albertel 1222: foreach (@extlinks) {
1.34 www 1223: $httpref{'httpref.'.
1.125 www 1224: &Apache::lonnet::hreflocation($thisdir,$_)}=$thisurl;
1.142 albertel 1225: }
1.126 www 1226: @extlinks=();
1.34 www 1227: &Apache::lonnet::appenv(%httpref);
1228: }
1229:
1.281 albertel 1230: sub register_ssi {
1231: my ($url,%form)=@_;
1232: push (@Apache::lonxml::ssi_info,{'url'=>$url,'form'=>\%form});
1233: return '';
1234: }
1235:
1236: sub do_registered_ssi {
1237: foreach my $info (@Apache::lonxml::ssi_info) {
1238: my %form=%{ $info->{'form'}};
1239: my $url=$info->{'url'};
1240: &Apache::lonnet::ssi($url,%form);
1241: }
1242: }
1.66 www 1243: #
1244: # Afterburner handles anchors, highlights and links
1245: #
1246: sub afterburn {
1247: my $result=shift;
1.154 albertel 1248: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
1249: ['highlight','anchor','link']);
1.372 albertel 1250: if ($env{'form.highlight'}) {
1251: foreach (split(/\,/,$env{'form.highlight'})) {
1.66 www 1252: my $anchorname=$_;
1253: my $matchthis=$anchorname;
1254: $matchthis=~s/\_+/\\s\+/g;
1.317 albertel 1255: $result=~s/(\Q$matchthis\E)/\<font color=\"red\"\>$1\<\/font\>/gs;
1.142 albertel 1256: }
1.66 www 1257: }
1.372 albertel 1258: if ($env{'form.link'}) {
1259: foreach (split(/\,/,$env{'form.link'})) {
1.66 www 1260: my ($anchorname,$linkurl)=split(/\>/,$_);
1261: my $matchthis=$anchorname;
1262: $matchthis=~s/\_+/\\s\+/g;
1.317 albertel 1263: $result=~s/(\Q$matchthis\E)/\<a href=\"$linkurl\"\>$1\<\/a\>/gs;
1.142 albertel 1264: }
1.66 www 1265: }
1.372 albertel 1266: if ($env{'form.anchor'}) {
1267: my $anchorname=$env{'form.anchor'};
1.66 www 1268: my $matchthis=$anchorname;
1269: $matchthis=~s/\_+/\\s\+/g;
1.317 albertel 1270: $result=~s/(\Q$matchthis\E)/\<a name=\"$anchorname\"\>$1\<\/a\>/s;
1.66 www 1271: $result.=(<<"ENDSCRIPT");
1.226 albertel 1272: <script type="text/javascript">
1.66 www 1273: document.location.hash='$anchorname';
1274: </script>
1275: ENDSCRIPT
1276: }
1277: return $result;
1278: }
1279:
1.79 www 1280: sub storefile {
1281: my ($file,$contents)=@_;
1.290 albertel 1282: &Apache::lonnet::correct_line_ends(\$contents);
1.79 www 1283: if (my $fh=Apache::File->new('>'.$file)) {
1284: print $fh $contents;
1285: $fh->close();
1.271 www 1286: return 1;
1.147 albertel 1287: } else {
1.271 www 1288: &warning("Unable to save file $file");
1289: return 0;
1.79 www 1290: }
1291: }
1292:
1.151 albertel 1293: sub createnewhtml {
1.321 www 1294: my $title=&mt('Title of document goes here');
1295: my $body=&mt('Body of document goes here');
1296: my $filecontents=(<<SIMPLECONTENT);
1.78 www 1297: <html>
1298: <head>
1.321 www 1299: <title>$title</title>
1.78 www 1300: </head>
1301: <body bgcolor="#FFFFFF">
1.321 www 1302: $body
1.78 www 1303: </body>
1304: </html>
1305: SIMPLECONTENT
1.321 www 1306: return $filecontents;
1.151 albertel 1307: }
1308:
1.274 albertel 1309: sub createnewsty {
1310: my $filecontents=(<<SIMPLECONTENT);
1311: <definetag name="">
1312: <render>
1313: <web></web>
1314: <tex></tex>
1315: </render>
1316: </definetag>
1317: SIMPLECONTENT
1318: return $filecontents;
1319: }
1320:
1.147 albertel 1321:
1.151 albertel 1322: sub inserteditinfo {
1.274 albertel 1323: my ($result,$filecontents,$filetype)=@_;
1.314 albertel 1324: $filecontents = &HTML::Entities::encode($filecontents,'<>&"');
1.147 albertel 1325: # my $editheader='<a href="#editsection">Edit below</a><hr />';
1.274 albertel 1326: my $xml_help = '';
1.321 www 1327: my $initialize='';
1.274 albertel 1328: if ($filetype eq 'html') {
1.323 www 1329: my $addbuttons=&Apache::lonhtmlcommon::htmlareaaddbuttons();
1.333 www 1330: $initialize=&Apache::lonhtmlcommon::htmlareaheaders().
1.347 albertel 1331: &Apache::lonhtmlcommon::spellheader();
1332: if (!&Apache::lonhtmlcommon::htmlareablocked() &&
1333: &Apache::lonhtmlcommon::htmlareabrowser()) {
1334: $initialize.=(<<FULLPAGE);
1.321 www 1335: <script type="text/javascript">
1.323 www 1336: $addbuttons
1337:
1.321 www 1338: HTMLArea.loadPlugin("FullPage");
1339:
1340: function initDocument() {
1.323 www 1341: var editor=new HTMLArea("filecont",config);
1.321 www 1342: editor.registerPlugin(FullPage);
1343: editor.generate();
1344: }
1345: </script>
1346: FULLPAGE
1.347 albertel 1347: } else {
1348: $initialize.=(<<FULLPAGE);
1349: <script type="text/javascript">
1350: $addbuttons
1351: function initDocument() {
1352: }
1353: </script>
1354: FULLPAGE
1355: }
1.321 www 1356: $result=~s/\<body([^\>]*)\>/\<body onload="initDocument()" $1\>/i;
1357: $xml_help=&Apache::loncommon::helpLatexCheatsheet();
1.274 albertel 1358: }
1359: my $cleanbut = '';
1.374 www 1360:
1.254 albertel 1361: my $titledisplay=&display_title();
1.280 www 1362: my %lt=&Apache::lonlocal::texthash('st' => 'Save this',
1363: 'vi' => 'View',
1364: 'ed' => 'Edit');
1.161 albertel 1365: my $buttons=(<<BUTTONS);
1.274 albertel 1366: $cleanbut
1.304 matthew 1367: <input type="submit" name="savethisfile" accesskey="s" value="$lt{'st'}" />
1368: <input type="submit" name="viewmode" accesskey="v" value="$lt{'vi'}" />
1.161 albertel 1369: BUTTONS
1.333 www 1370: $buttons.=&Apache::lonhtmlcommon::spelllink('xmledit','filecont');
1.338 albertel 1371: $buttons.=&Apache::lonhtmlcommon::htmlareaselectactive('filecont');
1.78 www 1372: my $editfooter=(<<ENDFOOTER);
1.321 www 1373: $initialize
1.78 www 1374: <hr />
1375: <a name="editsection" />
1.333 www 1376: <form method="post" name="xmledit">
1.240 albertel 1377: $xml_help
1.280 www 1378: <input type="hidden" name="editmode" value="$lt{'ed'}" />
1.170 www 1379: $buttons<br />
1.366 albertel 1380: <textarea style="width:100%" cols="80" rows="44" name="filecont" id="filecont">$filecontents</textarea>
1.170 www 1381: <br />$buttons
1.78 www 1382: <br />
1383: </form>
1.254 albertel 1384: $titledisplay
1.321 www 1385: </body>
1.78 www 1386: ENDFOOTER
1.147 albertel 1387: # $result=~s/(\<body[^\>]*\>)/$1$editheader/is;
1.78 www 1388: $result=~s/(\<\/body\>)/$editfooter/is;
1389: return $result;
1390: }
1391:
1.152 albertel 1392: sub get_target {
1.372 albertel 1393: my $viewgrades=&Apache::lonnet::allowed('vgr',$env{'request.course.id'});
1394: if ( $env{'request.state'} eq 'published') {
1395: if ( defined($env{'form.grade_target'})
1.152 albertel 1396: && ($viewgrades == 'F' )) {
1.372 albertel 1397: return ($env{'form.grade_target'});
1398: } elsif (defined($env{'form.grade_target'})) {
1399: if (($env{'form.grade_target'} eq 'web') ||
1400: ($env{'form.grade_target'} eq 'tex') ) {
1401: return $env{'form.grade_target'}
1.153 albertel 1402: } else {
1403: return 'web';
1404: }
1.152 albertel 1405: } else {
1406: return 'web';
1407: }
1.372 albertel 1408: } elsif ($env{'request.state'} eq 'construct') {
1409: if ( defined($env{'form.grade_target'})) {
1410: return ($env{'form.grade_target'});
1.152 albertel 1411: } else {
1412: return 'web';
1413: }
1414: } else {
1415: return 'web';
1416: }
1417: }
1418:
1.24 sakharuk 1419: sub handler {
1.255 sakharuk 1420: my $request=shift;
1421:
1422: my $target=&get_target();
1423:
1.372 albertel 1424: $Apache::lonxml::debug=$env{'user.debug'};
1.255 sakharuk 1425:
1.364 albertel 1426: &Apache::loncommon::content_type($request,'text/html');
1.255 sakharuk 1427: &Apache::loncommon::no_cache($request);
1.372 albertel 1428: if ($env{'request.state'} eq 'published') {
1.363 albertel 1429: $request->set_last_modified(&Apache::lonnet::metadata($request->uri,
1430: 'lastrevisiondate'));
1431: }
1.255 sakharuk 1432: $request->send_http_header;
1433:
1434: return OK if $request->header_only;
1.68 www 1435:
1436:
1.255 sakharuk 1437: my $file=&Apache::lonnet::filelocation("",$request->uri);
1.274 albertel 1438: my $filetype;
1439: if ($file =~ /\.sty$/) {
1440: $filetype='sty';
1441: } else {
1442: $filetype='html';
1443: }
1.78 www 1444: #
1445: # Edit action? Save file.
1446: #
1.372 albertel 1447: unless ($env{'request.state'} eq 'published') {
1.374 www 1448: if ($env{'form.savethisfile'}) {
1.372 albertel 1449: if (&storefile($file,$env{'form.filecont'})) {
1.309 albertel 1450: &Apache::lonxml::info("<font COLOR=\"#0000FF\">".
1451: &mt('Updated').": ".
1452: &Apache::lonlocal::locallocaltime(time).
1453: " </font>");
1.271 www 1454: }
1.255 sakharuk 1455: }
1456: }
1457: my %mystyle;
1458: my $result = '';
1459: my $filecontents=&Apache::lonnet::getfile($file);
1460: if ($filecontents eq -1) {
1.402 albertel 1461: my $start_page=&Apache::loncommon::start_page('File Error');
1462: my $end_page=&Apache::loncommon::end_page('File Error');
1.284 www 1463: my $fnf=&mt('File not found');
1.255 sakharuk 1464: $result=(<<ENDNOTFOUND);
1.402 albertel 1465: $start_page
1.284 www 1466: <b>$fnf: $file</b>
1.402 albertel 1467: $end_page
1.78 www 1468: ENDNOTFOUND
1.343 albertel 1469: $filecontents='';
1.372 albertel 1470: if ($env{'request.state'} ne 'published') {
1.274 albertel 1471: if ($filetype eq 'sty') {
1472: $filecontents=&createnewsty();
1473: } else {
1474: $filecontents=&createnewhtml();
1475: }
1.372 albertel 1476: $env{'form.editmode'}='Edit'; #force edit mode
1.255 sakharuk 1477: }
1478: } else {
1.372 albertel 1479: unless ($env{'request.state'} eq 'published') {
1.343 albertel 1480: if ($filecontents=~/BEGIN LON-CAPA Internal/) {
1.381 www 1481: &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 1482: }
1.264 www 1483: #
1484: # we are in construction space, see if edit mode forced
1.385 albertel 1485: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
1486: ['editmode']);
1.255 sakharuk 1487: }
1.372 albertel 1488: if (!$env{'form.editmode'} || $env{'form.viewmode'}) {
1.255 sakharuk 1489: $result = &Apache::lonxml::xmlparse($request,$target,$filecontents,
1490: '',%mystyle);
1.368 albertel 1491: undef($Apache::lonhomework::parsing_a_task);
1.385 albertel 1492: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
1493: ['rawmode']);
1.395 albertel 1494: if ($env{'form.rawmode'}) { $result = $filecontents; }
1.255 sakharuk 1495: }
1.147 albertel 1496: }
1.255 sakharuk 1497:
1.78 www 1498: #
1499: # Edit action? Insert editing commands
1500: #
1.372 albertel 1501: unless ($env{'request.state'} eq 'published') {
1502: if ($env{'form.editmode'} && (!($env{'form.viewmode'}))) {
1.255 sakharuk 1503: my $displayfile=$request->uri;
1504: $displayfile=~s/^\/[^\/]*//;
1.402 albertel 1505: my %options = ();
1506: if ($env{'environment.remote'} ne 'off') {
1507: $options{'bgcolor'} = '#FFFFFF';
1.349 albertel 1508: }
1.402 albertel 1509: my $start_page = &Apache::loncommon::start_page(undef,undef,
1510: \%options);
1511: $result=$start_page.
1.309 albertel 1512: &Apache::lonxml::message_location().'<h3>'.
1513: $displayfile.
1.402 albertel 1514: '</h3>'.&Apache::loncommon::end_page();
1.274 albertel 1515: $result=&inserteditinfo($result,$filecontents,$filetype);
1.255 sakharuk 1516: }
1.147 albertel 1517: }
1.402 albertel 1518: if ($filetype eq 'html') { &writeallows($request->uri); }
1.274 albertel 1519:
1.255 sakharuk 1520:
1.309 albertel 1521: &Apache::lonxml::add_messages(\$result);
1.255 sakharuk 1522: $request->print($result);
1523:
1524: return OK;
1.253 albertel 1525: }
1526:
1527: sub display_title {
1528: my $result;
1.372 albertel 1529: if ($env{'request.state'} eq 'construct') {
1.253 albertel 1530: my $title=&Apache::lonnet::gettitle();
1531: if (!defined($title) || $title eq '') {
1.372 albertel 1532: $title = $env{'request.filename'};
1.253 albertel 1533: $title = substr($title, rindex($title, '/') + 1);
1534: }
1535: $result = "<script type='text/javascript'>top.document.title = '$title - LON-CAPA Construction Space';</script>";
1536: }
1537: return $result;
1.24 sakharuk 1538: }
1.147 albertel 1539:
1.22 albertel 1540: sub debug {
1.298 albertel 1541: if ($Apache::lonxml::debug eq "1") {
1542: $|=1;
1.300 albertel 1543: my $request=$Apache::lonxml::request;
1.388 albertel 1544: if (!$request) {
1545: eval { $request=Apache->request; };
1546: }
1547: if (!$request) {
1548: eval { $request=Apache2::RequestUtil->request; };
1549: }
1.314 albertel 1550: $request->print('<font size="-2"><pre>DEBUG:'.&HTML::Entities::encode($_[0],'<>&"')."</pre></font>\n");
1.346 albertel 1551: #&Apache::lonnet::logthis($_[0]);
1.298 albertel 1552: }
1.22 albertel 1553: }
1.49 albertel 1554:
1.348 albertel 1555: sub show_error_warn_msg {
1.372 albertel 1556: if ($env{'request.filename'} eq '/home/httpd/html/res/lib/templates/simpleproblem.problem' &&
1557: &Apache::lonnet::allowed('mdc',$env{'request.course.id'})) {
1.351 albertel 1558: return 1;
1559: }
1.348 albertel 1560: return (($Apache::lonxml::debug eq 1) ||
1.372 albertel 1561: ($env{'request.state'} eq 'construct') ||
1.348 albertel 1562: ($Apache::lonhomework::browse eq 'F'
1563: &&
1.372 albertel 1564: $env{'form.show_errors'} eq 'on'));
1.348 albertel 1565: }
1566:
1.22 albertel 1567: sub error {
1.336 albertel 1568: $errorcount++;
1.348 albertel 1569: if ( &show_error_warn_msg() ) {
1.336 albertel 1570: # If printing in construction space, put the error inside <pre></pre>
1571: push(@Apache::lonxml::error_messages,
1572: $Apache::lonxml::warnings_error_header.
1573: "<b>ERROR:</b>".join("<br />\n",@_)."<br />\n");
1574: $Apache::lonxml::warnings_error_header='';
1575: } else {
1576: my $errormsg;
1577: my ($symb)=&Apache::lonnet::symbread();
1578: if ( !$symb ) {
1579: #public or browsers
1580: $errormsg=&mt("An error occured while processing this resource. The author has been notified.");
1.403 albertel 1581: }
1.404 albertel 1582: my $msg = join('<br />',@_);
1.336 albertel 1583: #notify author
1.403 albertel 1584: &Apache::lonmsg::author_res_msg($env{'request.filename'},$msg);
1.336 albertel 1585: #notify course
1.372 albertel 1586: if ( $symb && $env{'request.course.id'} ) {
1.380 www 1587: my $cnum=$env{'course.'.$env{'request.course.id'}.'.num'};
1588: my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
1.336 albertel 1589: my (undef,%users)=&Apache::lonfeedback::decide_receiver(undef,0,1,1,1);
1.372 albertel 1590: my $declutter=&Apache::lonnet::declutter($env{'request.filename'});
1.336 albertel 1591: my @userlist;
1592: foreach (keys %users) {
1593: my ($user,$domain) = split(/:/, $_);
1594: push(@userlist,"$user\@$domain");
1.380 www 1595: my $key=$declutter.'_'.$user.'_'.$domain;
1596: my %lastnotified=&Apache::lonnet::get('nohist_xmlerrornotifications',
1597: [$key],
1598: $cdom,$cnum);
1599: my $now=time;
1600: if ($now-$lastnotified{$key}>86400) {
1601: &Apache::lonmsg::user_normal_msg($user,$domain,
1.403 albertel 1602: "Error [$declutter]",$msg);
1.380 www 1603: &Apache::lonnet::put('nohist_xmlerrornotifications',
1604: {$key => $now},
1605: $cdom,$cnum);
1606: }
1.336 albertel 1607: }
1.372 albertel 1608: if ($env{'request.role.adv'}) {
1.336 albertel 1609: $errormsg=&mt("An error occured while processing this resource. The course personnel ([_1]) and the author have been notified.",join(', ',@userlist));
1610: } else {
1611: $errormsg=&mt("An error occured while processing this resource. The instructor has been notified.");
1612: }
1613: }
1614: push(@Apache::lonxml::error_messages,"<b>$errormsg</b> <br />");
1.52 albertel 1615: }
1.22 albertel 1616: }
1.49 albertel 1617:
1.22 albertel 1618: sub warning {
1.295 albertel 1619: $warningcount++;
1.261 albertel 1620:
1.372 albertel 1621: if ($env{'form.grade_target'} ne 'tex') {
1.348 albertel 1622: if ( &show_error_warn_msg() ) {
1.309 albertel 1623: push(@Apache::lonxml::warning_messages,
1624: $Apache::lonxml::warnings_error_header.
1625: "<b>W</b>ARNING<b>:</b>".join('<br />',@_)."<br />\n");
1.295 albertel 1626: $Apache::lonxml::warnings_error_header='';
1627: }
1628: }
1.309 albertel 1629: }
1630:
1631: sub info {
1.372 albertel 1632: if ($env{'form.grade_target'} ne 'tex'
1633: && $env{'request.state'} eq 'construct') {
1.309 albertel 1634: push(@Apache::lonxml::info_messages,join('<br />',@_)."<br />\n");
1635: }
1636: }
1637:
1638: sub message_location {
1639: return '__LONCAPA_INTERNAL_MESSAGE_LOCATION__';
1640: }
1641:
1642: sub add_messages {
1643: my ($msg)=@_;
1644: my $result=join(' ',
1645: @Apache::lonxml::info_messages,
1646: @Apache::lonxml::error_messages,
1647: @Apache::lonxml::warning_messages);
1648: undef(@Apache::lonxml::info_messages);
1649: undef(@Apache::lonxml::error_messages);
1650: undef(@Apache::lonxml::warning_messages);
1651: $$msg=~s/__LONCAPA_INTERNAL_MESSAGE_LOCATION__/$result/;
1652: $$msg=~s/__LONCAPA_INTERNAL_MESSAGE_LOCATION__//g;
1.83 albertel 1653: }
1654:
1655: sub get_param {
1.213 albertel 1656: my ($param,$parstack,$safeeval,$context,$case_insensitive) = @_;
1657: if ( ! $context ) { $context = -1; }
1658: my $args ='';
1659: if ( $#$parstack > (-2-$context) ) { $args=$$parstack[$context]; }
1.297 sakharuk 1660: if ( ! $Apache::lonxml::usestyle ) {
1661: $args=$Apache::lonxml::style_values.$args;
1662: }
1.213 albertel 1663: if ( ! $args ) { return undef; }
1664: if ( $case_insensitive ) {
1665: if ($args =~ s/(my \$)(\Q$param\E)(=\")/$1.lc($2).$3/ei) {
1666: return &Apache::run::run("{$args;".'return $'.$param.'}',
1667: $safeeval); #'
1668: } else {
1669: return undef;
1670: }
1671: } else {
1672: if ( $args =~ /my \$\Q$param\E=\"/ ) {
1673: return &Apache::run::run("{$args;".'return $'.$param.'}',
1674: $safeeval); #'
1675: } else {
1676: return undef;
1677: }
1678: }
1.22 albertel 1679: }
1680:
1.132 albertel 1681: sub get_param_var {
1.213 albertel 1682: my ($param,$parstack,$safeeval,$context,$case_insensitive) = @_;
1.132 albertel 1683: if ( ! $context ) { $context = -1; }
1684: my $args ='';
1685: if ( $#$parstack > (-2-$context) ) { $args=$$parstack[$context]; }
1.297 sakharuk 1686: if ( ! $Apache::lonxml::usestyle ) {
1687: $args=$Apache::lonxml::style_values.$args;
1688: }
1.230 albertel 1689: &Apache::lonxml::debug("Args are $args param is $param");
1.213 albertel 1690: if ($case_insensitive) {
1691: if (! ($args=~s/(my \$)(\Q$param\E)(=\")/$1.lc($2).$3/ei)) {
1692: return undef;
1693: }
1694: } elsif ( $args !~ /my \$\Q$param\E=\"/ ) { return undef; }
1.132 albertel 1695: my $value=&Apache::run::run("{$args;".'return $'.$param.'}',$safeeval); #'
1.230 albertel 1696: &Apache::lonxml::debug("first run is $value");
1.341 albertel 1697: if ($value =~ /^[\$\@\%][a-zA-Z_]\w*$/) {
1.230 albertel 1698: &Apache::lonxml::debug("doing second");
1699: my @result=&Apache::run::run("return $value",$safeeval,1);
1700: if (!defined($result[0])) {
1701: return $value
1702: } else {
1703: if (wantarray) { return @result; } else { return $result[0]; }
1704: }
1.132 albertel 1705: } else {
1706: return $value;
1707: }
1708: }
1709:
1.74 albertel 1710: sub register_insert {
1.75 albertel 1711: my @data = split /\n/, &Apache::lonnet::getfile('/home/httpd/lonTabs/insertlist.tab');
1.74 albertel 1712: my $i;
1.76 albertel 1713: my $tagnum=0;
1.74 albertel 1714: my @order;
1715: for ($i=0;$i < $#data; $i++) {
1716: my $line = $data[$i];
1717: if ( $line =~ /^\#/ || $line =~ /^\s*\n/) { next; }
1718: if ( $line =~ /TABLE/ ) { last; }
1.268 bowersj2 1719: my ($tag,$descrip,$color,$function,$show,$helpfile,$helpdesc) = split(/,/, $line);
1.135 albertel 1720: if ($tag) {
1721: $insertlist{"$tagnum.tag"} = $tag;
1722: $insertlist{"$tagnum.description"} = $descrip;
1723: $insertlist{"$tagnum.color"} = $color;
1724: $insertlist{"$tagnum.function"} = $function;
1725: if (!defined($show)) { $show='yes'; }
1726: $insertlist{"$tagnum.show"}= $show;
1.268 bowersj2 1727: $insertlist{"$tagnum.helpfile"} = $helpfile;
1728: $insertlist{"$tagnum.helpdesc"} = $helpdesc;
1.135 albertel 1729: $insertlist{"$tag.num"}=$tagnum;
1730: $tagnum++;
1731: }
1.74 albertel 1732: }
1.76 albertel 1733: $i++; #skipping TABLE line
1734: $tagnum = 0;
1.74 albertel 1735: for (;$i < $#data;$i++) {
1736: my $line = $data[$i];
1.76 albertel 1737: my ($mnemonic,@which) = split(/ +/,$line);
1738: my $tag = $insertlist{"$tagnum.tag"};
1.144 matthew 1739: for (my $j=0;$j <=$#which;$j++) {
1.74 albertel 1740: if ( $which[$j] eq 'Y' ) {
1.76 albertel 1741: if ($insertlist{"$j.show"} ne 'no') {
1742: push(@{ $insertlist{"$tag.which"} },$j);
1743: }
1.74 albertel 1744: }
1745: }
1.76 albertel 1746: $tagnum++;
1.74 albertel 1747: }
1748: }
1.98 albertel 1749:
1750: sub description {
1751: my ($token)=@_;
1.138 albertel 1752: my $tagnum;
1753: my $tag=$token->[1];
1754: foreach my $namespace (reverse @Apache::lonxml::namespace) {
1755: my $testtag=$namespace.'::'.$tag;
1756: $tagnum=$insertlist{"$testtag.num"};
1757: if (defined($tagnum)) { last; }
1758: }
1759: if (!defined ($tagnum)) { $tagnum=$Apache::lonxml::insertlist{"$tag.num"}; }
1760: return $insertlist{$tagnum.'.description'};
1.268 bowersj2 1761: }
1762:
1763: # Returns a list containing the help file, and the description
1764: sub helpinfo {
1765: my ($token)=@_;
1766: my $tagnum;
1767: my $tag=$token->[1];
1768: foreach my $namespace (reverse @Apache::lonxml::namespace) {
1769: my $testtag=$namespace.'::'.$tag;
1770: $tagnum=$insertlist{"$testtag.num"};
1771: if (defined($tagnum)) { last; }
1772: }
1773: if (!defined ($tagnum)) { $tagnum=$Apache::lonxml::insertlist{"$tag.num"}; }
1774: return ($insertlist{$tagnum.'.helpfile'}, $insertlist{$tagnum.'.helpdesc'});
1.98 albertel 1775: }
1.123 albertel 1776:
1777: # ----------------------------------------------------------------- whichuser
1778: # returns a list of $symb, $courseid, $domain, $name that is correct for
1779: # calls to lonnet functions for this setup.
1780: # - looks for form.grade_ parameters
1781: sub whichuser {
1.262 matthew 1782: my ($passedsymb)=@_;
1.245 albertel 1783: my ($symb,$courseid,$domain,$name,$publicuser);
1.372 albertel 1784: if (defined($env{'form.grade_symb'})) {
1.350 albertel 1785: my ($tmp_courseid)=
1786: &Apache::loncommon::get_env_multiple('form.grade_courseid');
1787: my $allowed=&Apache::lonnet::allowed('vgr',$tmp_courseid);
1788: if (!$allowed &&
1.372 albertel 1789: exists($env{'request.course.sec'}) &&
1790: $env{'request.course.sec'} !~ /^\s*$/) {
1.350 albertel 1791: $allowed=&Apache::lonnet::allowed('vgr',$tmp_courseid.
1.372 albertel 1792: '/'.$env{'request.course.sec'});
1.350 albertel 1793: }
1794: if ($allowed) {
1795: ($symb)=&Apache::loncommon::get_env_multiple('form.grade_symb');
1796: $courseid=$tmp_courseid;
1797: ($domain)=&Apache::loncommon::get_env_multiple('form.grade_domain');
1798: ($name)=&Apache::loncommon::get_env_multiple('form.grade_username');
1799: return ($symb,$courseid,$domain,$name,$publicuser);
1800: }
1801: }
1802: if (!$passedsymb) {
1803: $symb=&Apache::lonnet::symbread();
1.134 albertel 1804: } else {
1.350 albertel 1805: $symb=$passedsymb;
1806: }
1.372 albertel 1807: $courseid=$env{'request.course.id'};
1808: $domain=$env{'user.domain'};
1809: $name=$env{'user.name'};
1.350 albertel 1810: if ($name eq 'public' && $domain eq 'public') {
1.372 albertel 1811: if (!defined($env{'form.username'})) {
1812: $env{'form.username'}.=time.rand(10000000);
1.244 albertel 1813: }
1.372 albertel 1814: $name.=$env{'form.username'};
1.123 albertel 1815: }
1.245 albertel 1816: return ($symb,$courseid,$domain,$name,$publicuser);
1.123 albertel 1817: }
1818:
1.1 sakharuk 1819: 1;
1820: __END__
1.68 www 1821:
1822:
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