Annotation of loncom/xml/lonxml.pm, revision 1.499
1.2 sakharuk 1: # The LearningOnline Network with CAPA
1.3 sakharuk 2: # XML Parser Module
1.2 sakharuk 3: #
1.499 ! raeburn 4: # $Id: lonxml.pm,v 1.498 2009/07/08 17:55:16 bisitz 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:
1.489 jms 40: =pod
41:
42: =head1 NAME
43:
44: Apache::lonxml
45:
46: =head1 SYNOPSIS
47:
48: XML Parsing Module
49:
50: This is part of the LearningOnline Network with CAPA project
51: described at http://www.lon-capa.org.
52:
53:
54: =head1 SUBROUTINES
55:
56: =cut
57:
58:
1.2 sakharuk 59:
1.4 albertel 60: package Apache::lonxml;
1.33 www 61: use vars
1.410 albertel 62: qw(@pwd @outputstack $redirection $import @extlinks $metamode $evaluate %insertlist @namespace $errorcount $warningcount);
1.1 sakharuk 63: use strict;
1.444 albertel 64: use LONCAPA;
1.167 albertel 65: use HTML::LCParser();
1.161 albertel 66: use HTML::TreeBuilder();
67: use HTML::Entities();
68: use Safe();
69: use Safe::Hole();
70: use Math::Cephes();
71: use Math::Random();
72: use Opcode();
1.271 www 73: use POSIX qw(strftime);
1.339 albertel 74: use Time::HiRes qw( gettimeofday tv_interval );
1.393 albertel 75: use Symbol();
1.266 bowersj2 76:
1.72 albertel 77: sub register {
1.141 albertel 78: my ($space,@taglist) = @_;
79: foreach my $temptag (@taglist) {
80: push(@{ $Apache::lonxml::alltags{$temptag} },$space);
1.72 albertel 81: }
82: }
83:
1.141 albertel 84: sub deregister {
85: my ($space,@taglist) = @_;
86: foreach my $temptag (@taglist) {
87: my $tempspace = $Apache::lonxml::alltags{$temptag}[-1];
88: if ($tempspace eq $space) {
89: pop(@{ $Apache::lonxml::alltags{$temptag} });
90: }
91: }
1.142 albertel 92: #&printalltags();
1.141 albertel 93: }
94:
1.46 www 95: use Apache::Constants qw(:common);
1.161 albertel 96: use Apache::lontexconvert();
97: use Apache::style();
98: use Apache::run();
99: use Apache::londefdef();
100: use Apache::scripttag();
1.285 www 101: use Apache::languagetags();
1.161 albertel 102: use Apache::edit();
1.266 bowersj2 103: use Apache::inputtags();
104: use Apache::outputtags();
1.372 albertel 105: use Apache::lonnet;
1.161 albertel 106: use Apache::File();
107: use Apache::loncommon();
1.198 www 108: use Apache::lonfeedback();
1.200 www 109: use Apache::lonmsg();
1.217 matthew 110: use Apache::loncacc();
1.431 www 111: use Apache::lonmaxima();
1.494 www 112: use Apache::lonr();
1.280 www 113: use Apache::lonlocal;
1.79 www 114:
1.462 foxr 115: #==================================== Main subroutine: xmlparse
116:
1.72 albertel 117: #debugging control, to turn on debugging modify the correct handler
1.462 foxr 118:
1.72 albertel 119: $Apache::lonxml::debug=0;
1.206 albertel 120:
121: # keeps count of the number of warnings and errors generated in a parse
122: $warningcount=0;
123: $errorcount=0;
1.72 albertel 124:
125: #path to the directory containing the file currently being processed
126: @pwd=();
127:
128: #these two are used for capturing a subset of the output for later processing,
129: #don't touch them directly use &startredirection and &endredirection
130: @outputstack = ();
131: $redirection = 0;
132:
133: #controls wheter the <import> tag actually does
134: $import = 1;
135: @extlinks=();
136:
137: # meta mode is a bit weird only some output is to be turned off
138: #<output> tag turns metamode off (defined in londefdef.pm)
139: $metamode = 0;
140:
141: # turns on and of run::evaluate actually derefencing var refs
142: $evaluate = 1;
1.7 albertel 143:
1.74 albertel 144: # data structure for eidt mode, determines what tags can go into what other tags
145: %insertlist=();
1.68 www 146:
1.99 albertel 147: # stores the list of active tag namespaces
1.76 albertel 148: @namespace=();
149:
1.448 albertel 150: # stores all Scrit Vars displays for later showing
151: my @script_var_displays=();
152:
1.172 albertel 153: # a pointer the the Apache request object
154: $Apache::lonxml::request='';
155:
1.216 sakharuk 156: # a problem number counter, and check on ether it is used
1.237 sakharuk 157: $Apache::lonxml::counter=1;
1.204 albertel 158: $Apache::lonxml::counter_changed=0;
159:
1.462 foxr 160: # Part counter hash. In analysis mode, the
161: # problems can use this to record which parts increment the counter
162: # by how much. The counter subs will maintain this hash via
163: # their optional part parameters. Note that the assumption is that
164: # analysis is done in one request and therefore it is not necessary to
165: # save this information request-to-request.
166:
167:
168: %Apache::lonxml::counters_per_part = ();
169:
1.212 albertel 170: #internal check on whether to look at style defs
171: $Apache::lonxml::usestyle=1;
1.260 albertel 172:
173: #locations used to store the parameter string for style substitutions
174: $Apache::lonxml::style_values='';
175: $Apache::lonxml::style_end_values='';
1.212 albertel 176:
1.281 albertel 177: #array of ssi calls that need to occur after we are done parsing
178: @Apache::lonxml::ssi_info=();
179:
1.282 albertel 180: #should we do the postag variable interpolation
181: $Apache::lonxml::post_evaluate=1;
182:
1.295 albertel 183: #a header message to emit in the case of any generated warning or errors
184: $Apache::lonxml::warnings_error_header='';
185:
1.396 foxr 186: # Control whether or not LaTeX symbols should be substituted for their
187: # \ style equivalents...this may be turned off e.g. in an verbatim
188: # environment.
189:
190: $Apache::lonxml::substitute_LaTeX_symbols = 1; # Starts out on.
191:
192: sub enable_LaTeX_substitutions {
193: $Apache::lonxml::substitute_LaTeX_symbols = 1;
194: }
195: sub disable_LaTeX_substitutions {
196: $Apache::lonxml::substitute_LaTeX_symbols = 0;
197: }
198:
1.68 www 199: sub xmlend {
1.335 sakharuk 200: my ($target,$parser)=@_;
1.278 www 201: my $mode='xml';
202: my $status='OPEN';
1.368 albertel 203: if ($Apache::lonhomework::parsing_a_problem ||
204: $Apache::lonhomework::parsing_a_task ) {
1.278 www 205: $mode='problem';
206: $status=$Apache::inputtags::status[-1];
207: }
1.362 matthew 208: my $discussion;
1.379 albertel 209: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
210: ['LONCAPA_INTERNAL_no_discussion']);
1.372 albertel 211: if (! exists($env{'form.LONCAPA_INTERNAL_no_discussion'}) ||
212: $env{'form.LONCAPA_INTERNAL_no_discussion'} ne 'true') {
1.362 matthew 213: $discussion=&Apache::lonfeedback::list_discussion($mode,$status);
214: }
1.334 sakharuk 215: if ($target eq 'tex') {
1.335 sakharuk 216: $discussion.='<tex>\keephidden{ENDOFPROBLEM}\vskip 0.5mm\noindent\makebox[\textwidth/$number_of_columns][b]{\hrulefill}\end{document}</tex>';
1.334 sakharuk 217: &Apache::lonxml::newparser($parser,\$discussion,'');
218: return '';
219: }
1.405 albertel 220:
1.407 albertel 221: return $discussion;
1.119 www 222: }
223:
224: sub tokeninputfield {
1.120 www 225: my $defhost=$Apache::lonnet::perlvar{'lonHostID'};
226: $defhost=~tr/a-z/A-Z/;
1.119 www 227: return (<<ENDINPUTFIELD)
1.226 albertel 228: <script type="text/javascript">
1.120 www 229: function updatetoken() {
230: var comp=new Array;
231: var barcode=unescape(document.tokeninput.barcode.value);
232: comp=barcode.split('*');
233: if (typeof(comp[0])!="undefined") {
234: document.tokeninput.codeone.value=comp[0];
235: }
236: if (typeof(comp[1])!="undefined") {
237: document.tokeninput.codetwo.value=comp[1];
238: }
239: if (typeof(comp[2])!="undefined") {
240: comp[2]=comp[2].toUpperCase();
241: document.tokeninput.codethree.value=comp[2];
242: }
243: document.tokeninput.barcode.value='';
244: }
245: </script>
246: <form method="post" name="tokeninput">
1.119 www 247: <table border="2" bgcolor="#FFFFBB">
248: <tr><th>DocID Checkin</th></tr>
249: <tr><td>
250: <table>
251: <tr>
252: <td>Scan in Barcode</td>
1.120 www 253: <td><input type="text" size="22" name="barcode"
254: onChange="updatetoken()"/></td>
1.119 www 255: </tr>
256: <tr><td><i>or</i> Type in DocID</td>
257: <td>
258: <input type="text" size="5" name="codeone" />
1.120 www 259: <b><font size="+2">*</font></b>
1.119 www 260: <input type="text" size="5" name="codetwo" />
1.120 www 261: <b><font size="+2">*</font></b>
262: <input type="text" size="10" name="codethree" value="$defhost"
263: onChange="this.value=this.value.toUpperCase()" />
1.119 www 264: </td></tr>
265: </table>
266: </td></tr>
267: <tr><td><input type="submit" value="Check in DocID" /></td></tr>
268: </table>
269: </form>
270: ENDINPUTFIELD
1.112 www 271: }
272:
1.116 www 273: sub maketoken {
1.118 www 274: my ($symb,$tuname,$tudom,$tcrsid)=@_;
1.112 www 275: unless ($symb) {
276: $symb=&Apache::lonnet::symbread();
277: }
278: unless ($tuname) {
1.372 albertel 279: $tuname=$env{'user.name'};
280: $tudom=$env{'user.domain'};
281: $tcrsid=$env{'request.course.id'};
1.112 www 282: }
1.116 www 283:
1.118 www 284: return &Apache::lonnet::checkout($symb,$tuname,$tudom,$tcrsid);
285: }
286:
287: sub printtokenheader {
1.133 albertel 288: my ($target,$token,$tsymb,$tcrsid,$tudom,$tuname)=@_;
1.116 www 289: unless ($token) { return ''; }
1.118 www 290:
1.423 albertel 291: my ($symb,$courseid,$domain,$name) = &Apache::lonnet::whichuser();
1.133 albertel 292: unless ($tsymb) {
293: $tsymb=$symb;
1.118 www 294: }
295: unless ($tuname) {
1.133 albertel 296: $tuname=$name;
297: $tudom=$domain;
298: $tcrsid=$courseid;
1.118 www 299: }
1.114 www 300:
1.390 albertel 301: my $plainname=&Apache::loncommon::plainname($tuname,$tudom);
1.114 www 302:
1.112 www 303: if ($target eq 'web') {
1.145 www 304: my %idhash=&Apache::lonnet::idrget($tudom,($tuname));
1.115 www 305: return
1.221 albertel 306: '<img align="right" src="/cgi-bin/barcode.png?encode='.$token.'" />'.
1.284 www 307: &mt('Checked out for').' '.$plainname.
308: '<br />'.&mt('User').': '.$tuname.' at '.$tudom.
309: '<br />'.&mt('ID').': '.$idhash{$tuname}.
310: '<br />'.&mt('CourseID').': '.$tcrsid.
1.372 albertel 311: '<br />'.&mt('Course').': '.$env{'course.'.$tcrsid.'.description'}.
1.284 www 312: '<br />'.&mt('DocID').': '.$token.
313: '<br />'.&mt('Time').': '.&Apache::lonlocal::locallocaltime().'<hr />';
1.112 www 314: } else {
1.121 albertel 315: return $token;
1.112 www 316: }
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,$styletext));
351: }
352: }
353: }
1.449 albertel 354: } elsif ($env{'construct.style'}
355: && ($env{'request.state'} eq 'construct')) {
1.372 albertel 356: my $location=&Apache::lonnet::filelocation('',$env{'construct.style'});
1.291 sakharuk 357: my $styletext=&Apache::lonnet::getfile($location);
1.449 albertel 358: if ($styletext ne '-1') {
359: %style_for_target = (%style_for_target,
360: &Apache::style::styleparser($target,$styletext));
361: }
1.178 www 362: }
1.255 sakharuk 363: #&printalltags();
1.16 albertel 364: my @pars = ();
1.372 albertel 365: my $pwd=$env{'request.filename'};
1.23 albertel 366: $pwd =~ s:/[^/]*$::;
367: &newparser(\@pars,\$content_file_string,$pwd);
1.24 sakharuk 368:
1.3 sakharuk 369: my $safeeval = new Safe;
1.40 albertel 370: my $safehole = new Safe::Hole;
1.82 ng 371: &init_safespace($target,$safeeval,$safehole,$safeinit);
1.3 sakharuk 372: #-------------------- Redefinition of the target in the case of compound target
373:
374: ($target, my @tenta) = split('&&',$target);
375:
1.150 albertel 376: my @stack = ();
1.3 sakharuk 377: my @parstack = ();
1.358 albertel 378: &initdepth();
379: &init_alarm();
1.101 albertel 380: my $finaloutput = &inner_xmlparse($target,\@stack,\@parstack,\@pars,
1.394 albertel 381: $safeeval,\%style_for_target,1);
1.255 sakharuk 382:
1.425 albertel 383: if (@stack) {
1.482 bisitz 384: &warning(&mt('At end of file some tags were still left unclosed:').
385: ' <tt><'.join('></tt>, <tt><',reverse(@stack)).
1.425 albertel 386: '></tt>');
387: }
1.372 albertel 388: if ($env{'request.uri'}) {
389: &writeallows($env{'request.uri'});
1.125 www 390: }
1.281 albertel 391: &do_registered_ssi();
1.204 albertel 392: if ($Apache::lonxml::counter_changed) { &store_counter() }
1.393 albertel 393:
394: &clean_safespace($safeeval);
395:
1.448 albertel 396: if (@script_var_displays) {
397: $finaloutput .= join('',@script_var_displays);
398: undef(@script_var_displays);
399: }
1.469 albertel 400: &init_state();
1.372 albertel 401: if ($env{'form.return_only_error_and_warning_counts'}) {
1.473 www 402: if ($env{'request.filename'}=~/\.(html|htm|xml)$/i) {
403: my $error=&verify_html($content_file_string);
404: if ($error) { $errorcount++; }
405: }
1.361 www 406: return "$errorcount:$warningcount";
407: }
1.3 sakharuk 408: return $finaloutput;
1.106 www 409: }
410:
1.191 albertel 411: sub latex_special_symbols {
1.272 albertel 412: my ($string,$where)=@_;
1.396 foxr 413: #
414: # If e.g. in verbatim mode, then don't substitute.
415: # but return original string.
416: #
417: if (!($Apache::lonxml::substitute_LaTeX_symbols)) {
418: return $string;
419: }
1.235 sakharuk 420: if ($where eq 'header') {
1.414 foxr 421: $string =~ s/\\/\$\\backslash\$/g; # \ -> $\backslash$ per LaTex line by line pg 10.
1.311 albertel 422: $string =~ s/(\$|%|\{|\})/\\$1/g;
423: $string=&Apache::lonprintout::character_chart($string);
424: # any & or # leftover should be safe to just escape
425: $string=~s/([^\\])\&/$1\\\&/g;
426: $string=~s/([^\\])\#/$1\\\#/g;
1.415 foxr 427: $string =~ s/_/\\_/g; # _ -> \_
428: $string =~ s/\^/\\\^{}/g; # ^ -> \^{}
1.229 sakharuk 429: } else {
1.312 albertel 430: $string=~s/\\/\\ensuremath{\\backslash}/g;
1.367 albertel 431: $string=~s/\\\%|\%/\\\%/g;
432: $string=~s/\\{|{/\\{/g;
433: $string=~s/\\}|}/\\}/g;
1.378 albertel 434: $string=~s/\\ensuremath\\{\\backslash\\}/\\ensuremath{\\backslash}/g;
1.367 albertel 435: $string=~s/\\\$|\$/\\\$/g;
436: $string=~s/\\\_|\_/\\\_/g;
1.313 albertel 437: $string=~s/([^\\]|^)(\~|\^)/$1\\$2\\strut /g;
1.310 sakharuk 438: $string=~s/(>|<)/\\ensuremath\{$1\}/g; #more or less
1.311 albertel 439: $string=&Apache::lonprintout::character_chart($string);
440: # any & or # leftover should be safe to just escape
1.367 albertel 441: $string=~s/\\\&|\&/\\\&/g;
442: $string=~s/\\\#|\#/\\\#/g;
1.332 sakharuk 443: $string=~s/\|/\$\\mid\$/g;
1.310 sakharuk 444: #single { or } How to escape?
1.229 sakharuk 445: }
1.272 albertel 446: return $string;
1.188 sakharuk 447: }
448:
1.101 albertel 449: sub inner_xmlparse {
1.394 albertel 450: my ($target,$stack,$parstack,$pars,$safeeval,$style_for_target,$start)=@_;
1.101 albertel 451: my $finaloutput = '';
452: my $result;
453: my $token;
1.258 albertel 454: my $dontpop=0;
1.389 albertel 455: my $startredirection = $Apache::lonxml::redirection;
1.101 albertel 456: while ( $#$pars > -1 ) {
457: while ($token = $$pars['-1']->get_token) {
1.261 albertel 458: if (($token->[0] eq 'T') || ($token->[0] eq 'C') ) {
1.101 albertel 459: if ($metamode<1) {
1.190 albertel 460: my $text=$token->[1];
1.193 albertel 461: if ($token->[0] eq 'C' && $target eq 'tex') {
1.239 sakharuk 462: $text = '';
463: # $text = '%'.$text."\n";
1.182 sakharuk 464: }
1.190 albertel 465: $result.=$text;
1.101 albertel 466: }
1.261 albertel 467: } elsif (($token->[0] eq 'D')) {
468: if ($metamode<1 && $target eq 'web') {
469: my $text=$token->[1];
470: $result.=$text;
471: }
1.101 albertel 472: } elsif ($token->[0] eq 'PI') {
1.261 albertel 473: if ($metamode<1 && $target eq 'web') {
1.101 albertel 474: $result=$token->[2];
475: }
476: } elsif ($token->[0] eq 'S') {
1.140 albertel 477: # add tag to stack
1.101 albertel 478: push (@$stack,$token->[1]);
479: # add parameters list to another stack
480: push (@$parstack,&parstring($token));
1.140 albertel 481: &increasedepth($token);
1.212 albertel 482: if ($Apache::lonxml::usestyle &&
483: exists($$style_for_target{$token->[1]})) {
484: $Apache::lonxml::usestyle=0;
485: my $string=$$style_for_target{$token->[1]}.
486: '<LONCAPA_INTERNAL_TURN_STYLE_ON />';
487: &Apache::lonxml::newparser($pars,\$string);
1.257 albertel 488: $Apache::lonxml::style_values=$$parstack[-1];
1.259 albertel 489: $Apache::lonxml::style_end_values=$$parstack[-1];
1.101 albertel 490: } else {
491: $result = &callsub("start_$token->[1]", $target, $token, $stack,
492: $parstack, $pars, $safeeval, $style_for_target);
1.140 albertel 493: }
1.101 albertel 494: } elsif ($token->[0] eq 'E') {
1.212 albertel 495: if ($Apache::lonxml::usestyle &&
496: exists($$style_for_target{'/'."$token->[1]"})) {
497: $Apache::lonxml::usestyle=0;
498: my $string=$$style_for_target{'/'.$token->[1]}.
1.258 albertel 499: '<LONCAPA_INTERNAL_TURN_STYLE_ON end="'.$token->[1].'" />';
1.212 albertel 500: &Apache::lonxml::newparser($pars,\$string);
1.259 albertel 501: $Apache::lonxml::style_values=$Apache::lonxml::style_end_values;
502: $Apache::lonxml::style_end_values='';
1.258 albertel 503: $dontpop=1;
1.101 albertel 504: } else {
1.258 albertel 505: #clear out any tags that didn't end
506: while ($token->[1] ne $$stack['-1'] && ($#$stack > -1)) {
507: my $lasttag=$$stack[-1];
1.317 albertel 508: if ($token->[1] =~ /^\Q$lasttag\E$/i) {
1.483 bisitz 509: &Apache::lonxml::warning(&mt('Using tag [_1] on line [_2] as end tag to [_3]','</'.$token->[1].'>','.$token->[3].','<'.$$stack[-1].'>'));
1.258 albertel 510: last;
511: } else {
1.483 bisitz 512: &Apache::lonxml::warning(&mt('Found tag [_1] on line [_2] when looking for [_3] in file.','</'.$token->[1].'>',$token->[3],'</'.$$stack[-1].'>'));
1.258 albertel 513: &end_tag($stack,$parstack,$token);
514: }
515: }
516: $result = &callsub("end_$token->[1]", $target, $token, $stack,
517: $parstack, $pars,$safeeval, $style_for_target);
1.101 albertel 518: }
519: } else {
520: &Apache::lonxml::error("Unknown token event :$token->[0]:$token->[1]:");
521: }
522: #evaluate variable refs in result
1.282 albertel 523: if ($Apache::lonxml::post_evaluate &&$result ne "") {
1.257 albertel 524: my $extras;
525: if (!$Apache::lonxml::usestyle) {
526: $extras=$Apache::lonxml::style_values;
527: }
1.488 raeburn 528: if ( $#$parstack > -1 ) {
529: $result=&Apache::run::evaluate($result,$safeeval,$extras.$$parstack[-1]);
530: } else {
531: $result= &Apache::run::evaluate($result,$safeeval,$extras);
1.487 raeburn 532: }
1.163 albertel 533: }
1.282 albertel 534: $Apache::lonxml::post_evaluate=1;
535:
1.190 albertel 536: if (($token->[0] eq 'T') || ($token->[0] eq 'C') || ($token->[0] eq 'D') ) {
1.249 albertel 537: #Style file definitions should be correct
1.250 albertel 538: if ($target eq 'tex' && ($Apache::lonxml::usestyle)) {
1.311 albertel 539: $result=&latex_special_symbols($result);
1.249 albertel 540: }
1.190 albertel 541: }
542:
1.169 albertel 543: if ($Apache::lonxml::redirection) {
544: $Apache::lonxml::outputstack['-1'] .= $result;
545: } else {
546: $finaloutput.=$result;
547: }
548: $result = '';
549:
1.258 albertel 550: if ($token->[0] eq 'E' && !$dontpop) {
1.101 albertel 551: &end_tag($stack,$parstack,$token);
552: }
1.258 albertel 553: $dontpop=0;
1.224 albertel 554: }
1.212 albertel 555: if ($#$pars > -1) {
556: pop @$pars;
557: pop @Apache::lonxml::pwd;
558: }
1.101 albertel 559: }
560:
561: # if ($target eq 'meta') {
562: # $finaloutput.=&endredirection;
563: # }
564:
1.394 albertel 565: if ( $start && $target eq 'grade') { &endredirection(); }
1.389 albertel 566: if ( $Apache::lonxml::redirection > $startredirection) {
567: while ($Apache::lonxml::redirection > $startredirection) {
568: $finaloutput .= &endredirection();
1.387 albertel 569: }
570: }
1.101 albertel 571: if (($ENV{'QUERY_STRING'}) && ($target eq 'web')) {
572: $finaloutput=&afterburn($finaloutput);
1.216 sakharuk 573: }
1.101 albertel 574: return $finaloutput;
575: }
1.67 www 576:
1.318 matthew 577: ##
578: ## Looks to see if there is a subroutine defined for this tag. If so, call it,
579: ## otherwise do not call it as we do not know what it is.
580: ##
1.7 albertel 581: sub callsub {
1.84 albertel 582: my ($sub,$target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.7 albertel 583: my $currentstring='';
1.72 albertel 584: my $nodefault;
1.7 albertel 585: {
1.59 albertel 586: my $sub1;
1.7 albertel 587: no strict 'refs';
1.68 www 588: my $tag=$token->[1];
1.236 www 589: # get utterly rid of extended html tags
590: if ($tag=~/^x\-/i) { return ''; }
1.141 albertel 591: my $space=$Apache::lonxml::alltags{$tag}[-1];
1.68 www 592: if (!$space) {
1.141 albertel 593: $tag=~tr/A-Z/a-z/;
1.68 www 594: $sub=~tr/A-Z/a-z/;
1.141 albertel 595: $space=$Apache::lonxml::alltags{$tag}[-1]
1.68 www 596: }
1.97 albertel 597:
598: my $deleted=0;
599: if (($token->[0] eq 'S') && ($target eq 'modified')) {
600: $deleted=&Apache::edit::handle_delete($space,$target,$token,$tagstack,
601: $parstack,$parser,$safeeval,
602: $style);
603: }
604: if (!$deleted) {
605: if ($space) {
1.220 albertel 606: #&Apache::lonxml::debug("Calling sub $sub in $space $metamode");
1.97 albertel 607: $sub1="$space\:\:$sub";
608: ($currentstring,$nodefault) = &$sub1($target,$token,$tagstack,
609: $parstack,$parser,$safeeval,
610: $style);
611: } else {
1.318 matthew 612: if ($target eq 'tex') {
613: # throw away tag name
614: return '';
615: }
1.220 albertel 616: #&Apache::lonxml::debug("NOT Calling sub $sub in $space $metamode");
1.97 albertel 617: if ($metamode <1) {
618: if (defined($token->[4]) && ($metamode < 1)) {
619: $currentstring = $token->[4];
620: } else {
621: $currentstring = $token->[2];
622: }
1.62 sakharuk 623: }
1.7 albertel 624: }
1.97 albertel 625: # &Apache::lonxml::debug("nodefalt:$nodefault:");
626: if ($currentstring eq '' && $nodefault eq '') {
627: if ($target eq 'edit') {
1.220 albertel 628: #&Apache::lonxml::debug("doing default edit for $token->[1]");
1.97 albertel 629: if ($token->[0] eq 'S') {
630: $currentstring = &Apache::edit::tag_start($target,$token);
631: } elsif ($token->[0] eq 'E') {
632: $currentstring = &Apache::edit::tag_end($target,$token);
633: }
1.441 albertel 634: }
635: }
636: if ($target eq 'modified' && $nodefault eq '') {
637: if ($currentstring eq '') {
638: if ($token->[0] eq 'S') {
639: $currentstring = $token->[4];
640: } elsif ($token->[0] eq 'E') {
641: $currentstring = $token->[2];
642: } else {
643: $currentstring = $token->[2];
644: }
645: }
1.97 albertel 646: if ($token->[0] eq 'S') {
1.447 albertel 647: $currentstring.=&Apache::edit::handle_insert();
1.210 www 648: } elsif ($token->[0] eq 'E') {
1.447 albertel 649: $currentstring.=&Apache::edit::handle_insertafter($token->[1]);
1.97 albertel 650: }
1.72 albertel 651: }
1.7 albertel 652: }
653: use strict 'refs';
654: }
655: return $currentstring;
1.82 ng 656: }
657:
1.465 albertel 658: {
659: my %state;
660:
661: sub init_state {
662: undef(%state);
663: }
664:
665: sub set_state {
666: my ($key,$value) = @_;
667: $state{$key} = $value;
668: return $value;
669: }
670: sub get_state {
671: my ($key) = @_;
672: return $state{$key};
673: }
674: }
675:
1.96 albertel 676: sub setup_globals {
1.172 albertel 677: my ($request,$target)=@_;
678: $Apache::lonxml::request=$request;
1.205 www 679: $errorcount=0;
680: $warningcount=0;
1.490 www 681: $Apache::lonxml::internal_error=0;
1.207 albertel 682: $Apache::lonxml::default_homework_loaded=0;
1.212 albertel 683: $Apache::lonxml::usestyle=1;
1.204 albertel 684: &init_counter();
1.462 foxr 685: &clear_bubble_lines_for_part();
1.465 albertel 686: &init_state();
1.469 albertel 687: &set_state('target',$target);
1.101 albertel 688: @Apache::lonxml::pwd=();
1.124 albertel 689: @Apache::lonxml::extlinks=();
1.448 albertel 690: @script_var_displays=();
1.281 albertel 691: @Apache::lonxml::ssi_info=();
1.282 albertel 692: $Apache::lonxml::post_evaluate=1;
1.295 albertel 693: $Apache::lonxml::warnings_error_header='';
1.397 albertel 694: $Apache::lonxml::substitute_LaTeX_symbols = 1;
1.96 albertel 695: if ($target eq 'meta') {
696: $Apache::lonxml::redirection = 0;
697: $Apache::lonxml::metamode = 1;
698: $Apache::lonxml::evaluate = 1;
699: $Apache::lonxml::import = 0;
1.129 albertel 700: } elsif ($target eq 'answer') {
701: $Apache::lonxml::redirection = 0;
702: $Apache::lonxml::metamode = 1;
703: $Apache::lonxml::evaluate = 1;
704: $Apache::lonxml::import = 1;
1.96 albertel 705: } elsif ($target eq 'grade') {
1.387 albertel 706: &startredirection(); #ended in inner_xmlparse on exit
1.96 albertel 707: $Apache::lonxml::metamode = 0;
708: $Apache::lonxml::evaluate = 1;
709: $Apache::lonxml::import = 1;
710: } elsif ($target eq 'modified') {
711: $Apache::lonxml::redirection = 0;
712: $Apache::lonxml::metamode = 0;
713: $Apache::lonxml::evaluate = 0;
714: $Apache::lonxml::import = 0;
715: } elsif ($target eq 'edit') {
716: $Apache::lonxml::redirection = 0;
717: $Apache::lonxml::metamode = 0;
718: $Apache::lonxml::evaluate = 0;
719: $Apache::lonxml::import = 0;
1.163 albertel 720: } elsif ($target eq 'analyze') {
721: $Apache::lonxml::redirection = 0;
722: $Apache::lonxml::metamode = 0;
723: $Apache::lonxml::evaluate = 1;
724: $Apache::lonxml::import = 1;
1.96 albertel 725: } else {
726: $Apache::lonxml::redirection = 0;
727: $Apache::lonxml::metamode = 0;
728: $Apache::lonxml::evaluate = 1;
729: $Apache::lonxml::import = 1;
730: }
731: }
732:
1.82 ng 733: sub init_safespace {
734: my ($target,$safeeval,$safehole,$safeinit) = @_;
1.393 albertel 735: $safeeval->deny_only(':dangerous');
736: $safeeval->reval('use Math::Complex;');
1.383 albertel 737: $safeeval->permit_only(":default");
1.82 ng 738: $safeeval->permit("entereval");
739: $safeeval->permit(":base_math");
740: $safeeval->permit("sort");
1.286 albertel 741: $safeeval->permit("time");
1.480 www 742: $safeeval->permit("caller");
1.371 albertel 743: $safeeval->deny("rand");
744: $safeeval->deny("srand");
1.82 ng 745: $safeeval->deny(":base_io");
1.102 albertel 746: $safehole->wrap(\&Apache::scripttag::xmlparse,$safeeval,'&xmlparse');
1.251 albertel 747: $safehole->wrap(\&Apache::outputtags::multipart,$safeeval,'&multipart');
1.82 ng 748: $safehole->wrap(\&Apache::lonnet::EXT,$safeeval,'&EXT');
1.324 albertel 749: $safehole->wrap(\&Apache::chemresponse::chem_standard_order,$safeeval,
750: '&chem_standard_order');
1.369 albertel 751: $safehole->wrap(\&Apache::response::check_status,$safeeval,'&check_status');
1.471 bisitz 752: $safehole->wrap(\&Apache::response::implicit_multiplication,$safeeval,'&implicit_multiplication');
1.324 albertel 753:
1.431 www 754: $safehole->wrap(\&Apache::lonmaxima::maxima_eval,$safeeval,'&maxima_eval');
1.432 www 755: $safehole->wrap(\&Apache::lonmaxima::maxima_check,$safeeval,'&maxima_check');
1.433 albertel 756: $safehole->wrap(\&Apache::lonmaxima::maxima_cas_formula_fix,$safeeval,
757: '&maxima_cas_formula_fix');
758:
1.494 www 759: $safehole->wrap(\&Apache::lonr::r_eval,$safeeval,'&r_eval');
1.497 www 760: $safehole->wrap(\&Apache::lonr::Rentry,$safeeval,'&Rentry');
761: $safehole->wrap(\&Apache::lonr::Rarray,$safeeval,'&Rarray');
1.494 www 762: $safehole->wrap(\&Apache::lonr::r_check,$safeeval,'&r_check');
763: $safehole->wrap(\&Apache::lonr::r_cas_formula_fix,$safeeval,
764: '&r_cas_formula_fix');
765:
1.433 albertel 766: $safehole->wrap(\&Apache::caparesponse::capa_formula_fix,$safeeval,
767: '&capa_formula_fix');
1.431 www 768:
1.480 www 769: $safehole->wrap(\&Apache::lonlocal::locallocaltime,$safeeval,
770: '&locallocaltime');
771:
1.82 ng 772: $safehole->wrap(\&Math::Cephes::asin,$safeeval,'&asin');
773: $safehole->wrap(\&Math::Cephes::acos,$safeeval,'&acos');
774: $safehole->wrap(\&Math::Cephes::atan,$safeeval,'&atan');
775: $safehole->wrap(\&Math::Cephes::sinh,$safeeval,'&sinh');
776: $safehole->wrap(\&Math::Cephes::cosh,$safeeval,'&cosh');
777: $safehole->wrap(\&Math::Cephes::tanh,$safeeval,'&tanh');
778: $safehole->wrap(\&Math::Cephes::asinh,$safeeval,'&asinh');
779: $safehole->wrap(\&Math::Cephes::acosh,$safeeval,'&acosh');
780: $safehole->wrap(\&Math::Cephes::atanh,$safeeval,'&atanh');
781: $safehole->wrap(\&Math::Cephes::erf,$safeeval,'&erf');
782: $safehole->wrap(\&Math::Cephes::erfc,$safeeval,'&erfc');
783: $safehole->wrap(\&Math::Cephes::j0,$safeeval,'&j0');
784: $safehole->wrap(\&Math::Cephes::j1,$safeeval,'&j1');
785: $safehole->wrap(\&Math::Cephes::jn,$safeeval,'&jn');
786: $safehole->wrap(\&Math::Cephes::jv,$safeeval,'&jv');
787: $safehole->wrap(\&Math::Cephes::y0,$safeeval,'&y0');
788: $safehole->wrap(\&Math::Cephes::y1,$safeeval,'&y1');
789: $safehole->wrap(\&Math::Cephes::yn,$safeeval,'&yn');
790: $safehole->wrap(\&Math::Cephes::yv,$safeeval,'&yv');
1.215 albertel 791:
792: $safehole->wrap(\&Math::Cephes::bdtr ,$safeeval,'&bdtr' );
793: $safehole->wrap(\&Math::Cephes::bdtrc ,$safeeval,'&bdtrc' );
794: $safehole->wrap(\&Math::Cephes::bdtri ,$safeeval,'&bdtri' );
795: $safehole->wrap(\&Math::Cephes::btdtr ,$safeeval,'&btdtr' );
796: $safehole->wrap(\&Math::Cephes::chdtr ,$safeeval,'&chdtr' );
797: $safehole->wrap(\&Math::Cephes::chdtrc,$safeeval,'&chdtrc');
798: $safehole->wrap(\&Math::Cephes::chdtri,$safeeval,'&chdtri');
799: $safehole->wrap(\&Math::Cephes::fdtr ,$safeeval,'&fdtr' );
800: $safehole->wrap(\&Math::Cephes::fdtrc ,$safeeval,'&fdtrc' );
801: $safehole->wrap(\&Math::Cephes::fdtri ,$safeeval,'&fdtri' );
802: $safehole->wrap(\&Math::Cephes::gdtr ,$safeeval,'&gdtr' );
803: $safehole->wrap(\&Math::Cephes::gdtrc ,$safeeval,'&gdtrc' );
804: $safehole->wrap(\&Math::Cephes::nbdtr ,$safeeval,'&nbdtr' );
805: $safehole->wrap(\&Math::Cephes::nbdtrc,$safeeval,'&nbdtrc');
806: $safehole->wrap(\&Math::Cephes::nbdtri,$safeeval,'&nbdtri');
807: $safehole->wrap(\&Math::Cephes::ndtr ,$safeeval,'&ndtr' );
808: $safehole->wrap(\&Math::Cephes::ndtri ,$safeeval,'&ndtri' );
809: $safehole->wrap(\&Math::Cephes::pdtr ,$safeeval,'&pdtr' );
810: $safehole->wrap(\&Math::Cephes::pdtrc ,$safeeval,'&pdtrc' );
811: $safehole->wrap(\&Math::Cephes::pdtri ,$safeeval,'&pdtri' );
812: $safehole->wrap(\&Math::Cephes::stdtr ,$safeeval,'&stdtr' );
813: $safehole->wrap(\&Math::Cephes::stdtri,$safeeval,'&stdtri');
814:
1.383 albertel 815: $safehole->wrap(\&Math::Cephes::Matrix::mat,$safeeval,'&mat');
816: $safehole->wrap(\&Math::Cephes::Matrix::new,$safeeval,
817: '&Math::Cephes::Matrix::new');
818: $safehole->wrap(\&Math::Cephes::Matrix::coef,$safeeval,
819: '&Math::Cephes::Matrix::coef');
820: $safehole->wrap(\&Math::Cephes::Matrix::clr,$safeeval,
821: '&Math::Cephes::Matrix::clr');
822: $safehole->wrap(\&Math::Cephes::Matrix::add,$safeeval,
823: '&Math::Cephes::Matrix::add');
824: $safehole->wrap(\&Math::Cephes::Matrix::sub,$safeeval,
825: '&Math::Cephes::Matrix::sub');
826: $safehole->wrap(\&Math::Cephes::Matrix::mul,$safeeval,
827: '&Math::Cephes::Matrix::mul');
828: $safehole->wrap(\&Math::Cephes::Matrix::div,$safeeval,
829: '&Math::Cephes::Matrix::div');
830: $safehole->wrap(\&Math::Cephes::Matrix::inv,$safeeval,
831: '&Math::Cephes::Matrix::inv');
832: $safehole->wrap(\&Math::Cephes::Matrix::transp,$safeeval,
833: '&Math::Cephes::Matrix::transp');
834: $safehole->wrap(\&Math::Cephes::Matrix::simq,$safeeval,
835: '&Math::Cephes::Matrix::simq');
836: $safehole->wrap(\&Math::Cephes::Matrix::mat_to_vec,$safeeval,
837: '&Math::Cephes::Matrix::mat_to_vec');
838: $safehole->wrap(\&Math::Cephes::Matrix::vec_to_mat,$safeeval,
839: '&Math::Cephes::Matrix::vec_to_mat');
840: $safehole->wrap(\&Math::Cephes::Matrix::check,$safeeval,
841: '&Math::Cephes::Matrix::check');
842: $safehole->wrap(\&Math::Cephes::Matrix::check,$safeeval,
843: '&Math::Cephes::Matrix::check');
844:
1.215 albertel 845: # $safehole->wrap(\&Math::Cephes::new_fract,$safeeval,'&new_fract');
846: # $safehole->wrap(\&Math::Cephes::radd,$safeeval,'&radd');
847: # $safehole->wrap(\&Math::Cephes::rsub,$safeeval,'&rsub');
848: # $safehole->wrap(\&Math::Cephes::rmul,$safeeval,'&rmul');
849: # $safehole->wrap(\&Math::Cephes::rdiv,$safeeval,'&rdiv');
850: # $safehole->wrap(\&Math::Cephes::euclid,$safeeval,'&euclid');
851:
1.91 ng 852: $safehole->wrap(\&Math::Random::random_beta,$safeeval,'&math_random_beta');
853: $safehole->wrap(\&Math::Random::random_chi_square,$safeeval,'&math_random_chi_square');
854: $safehole->wrap(\&Math::Random::random_exponential,$safeeval,'&math_random_exponential');
855: $safehole->wrap(\&Math::Random::random_f,$safeeval,'&math_random_f');
856: $safehole->wrap(\&Math::Random::random_gamma,$safeeval,'&math_random_gamma');
857: $safehole->wrap(\&Math::Random::random_multivariate_normal,$safeeval,'&math_random_multivariate_normal');
858: $safehole->wrap(\&Math::Random::random_multinomial,$safeeval,'&math_random_multinomial');
859: $safehole->wrap(\&Math::Random::random_noncentral_chi_square,$safeeval,'&math_random_noncentral_chi_square');
860: $safehole->wrap(\&Math::Random::random_noncentral_f,$safeeval,'&math_random_noncentral_f');
861: $safehole->wrap(\&Math::Random::random_normal,$safeeval,'&math_random_normal');
862: $safehole->wrap(\&Math::Random::random_permutation,$safeeval,'&math_random_permutation');
1.93 ng 863: $safehole->wrap(\&Math::Random::random_permuted_index,$safeeval,'&math_random_permuted_index');
1.91 ng 864: $safehole->wrap(\&Math::Random::random_uniform,$safeeval,'&math_random_uniform');
865: $safehole->wrap(\&Math::Random::random_poisson,$safeeval,'&math_random_poisson');
866: $safehole->wrap(\&Math::Random::random_uniform_integer,$safeeval,'&math_random_uniform_integer');
867: $safehole->wrap(\&Math::Random::random_negative_binomial,$safeeval,'&math_random_negative_binomial');
868: $safehole->wrap(\&Math::Random::random_binomial,$safeeval,'&math_random_binomial');
869: $safehole->wrap(\&Math::Random::random_seed_from_phrase,$safeeval,'&random_seed_from_phrase');
870: $safehole->wrap(\&Math::Random::random_set_seed_from_phrase,$safeeval,'&random_set_seed_from_phrase');
871: $safehole->wrap(\&Math::Random::random_get_seed,$safeeval,'&random_get_seed');
872: $safehole->wrap(\&Math::Random::random_set_seed,$safeeval,'&random_set_seed');
1.458 albertel 873: $safehole->wrap(\&Apache::loncommon::languages,$safeeval,'&languages');
1.305 albertel 874: $safehole->wrap(\&Apache::lonxml::error,$safeeval,'&LONCAPA_INTERNAL_ERROR');
1.311 albertel 875: $safehole->wrap(\&Apache::lonxml::debug,$safeeval,'&LONCAPA_INTERNAL_DEBUG');
1.420 albertel 876: $safehole->wrap(\&Apache::lonnet::logthis,$safeeval,'&LONCAPA_INTERNAL_LOGTHIS');
877: $safehole->wrap(\&Apache::inputtags::finalizeawards,$safeeval,'&LONCAPA_INTERNAL_FINALIZEAWARDS');
1.322 albertel 878: $safehole->wrap(\&Apache::caparesponse::get_sigrange,$safeeval,'&LONCAPA_INTERNAL_get_sigrange');
1.430 albertel 879: # use Data::Dumper;
880: # $safehole->wrap(\&Data::Dumper::Dumper,$safeeval,'&LONCAPA_INTERNAL_Dumper');
1.82 ng 881: #need to inspect this class of ops
882: # $safeeval->deny(":base_orig");
1.331 albertel 883: $safeeval->permit("require");
1.91 ng 884: $safeinit .= ';$external::target="'.$target.'";';
1.82 ng 885: &Apache::run::run($safeinit,$safeeval);
1.373 albertel 886: &initialize_rndseed($safeeval);
887: }
1.303 albertel 888:
1.393 albertel 889: sub clean_safespace {
890: my ($safeeval) = @_;
891: delete_package_recurse($safeeval->{Root});
892: }
893:
894: sub delete_package_recurse {
895: my ($package) = @_;
896: my @subp;
897: {
898: no strict 'refs';
899: while (my ($key,$val) = each(%{*{"$package\::"}})) {
900: if (!defined($val)) { next; }
901: local (*ENTRY) = $val;
902: if (defined *ENTRY{HASH} && $key =~ /::$/ &&
903: $key ne "main::" && $key ne "<none>::")
904: {
905: my ($p) = $package ne "main" ? "$package\::" : "";
906: ($p .= $key) =~ s/::$//;
907: push(@subp,$p);
908: }
909: }
910: }
911: foreach my $p (@subp) {
912: delete_package_recurse($p);
913: }
914: Symbol::delete_package($package);
915: }
916:
1.373 albertel 917: sub initialize_rndseed {
918: my ($safeeval)=@_;
919: my $rndseed;
1.423 albertel 920: my ($symb,$courseid,$domain,$name) = &Apache::lonnet::whichuser();
1.373 albertel 921: $rndseed=&Apache::lonnet::rndseed($symb,$courseid,$domain,$name);
922: my $safeinit = '$external::randomseed="'.$rndseed.'";';
923: &Apache::lonxml::debug("Setting rndseed to $rndseed");
924: &Apache::run::run($safeinit,$safeeval);
1.207 albertel 925: }
926:
927: sub default_homework_load {
928: my ($safeeval)=@_;
929: &Apache::lonxml::debug('Loading default_homework');
930: my $default=&Apache::lonnet::getfile('/home/httpd/html/res/adm/includes/default_homework.lcpm');
1.241 albertel 931: if ($default eq -1) {
1.207 albertel 932: &Apache::lonxml::error("<b>Unable to find <i>default_homework.lcpm</i></b>");
933: } else {
934: &Apache::run::run($default,$safeeval);
935: $Apache::lonxml::default_homework_loaded=1;
936: }
1.17 albertel 937: }
938:
1.358 albertel 939: {
940: my $alarm_depth;
941: sub init_alarm {
942: alarm(0);
943: $alarm_depth=0;
944: }
945:
946: sub start_alarm {
947: if ($alarm_depth<1) {
948: my $old=alarm($Apache::lonnet::perlvar{'lonScriptTimeout'});
949: if ($old) {
950: &Apache::lonxml::error("Cancelled an alarm of $old, this shouldn't occur.");
951: }
952: }
953: $alarm_depth++;
954: }
955:
956: sub end_alarm {
957: $alarm_depth--;
958: if ($alarm_depth<1) { alarm(0); }
959: }
960: }
1.328 albertel 961: my $metamode_was;
1.55 albertel 962: sub startredirection {
1.328 albertel 963: if (!$Apache::lonxml::redirection) {
964: $metamode_was=$Apache::lonxml::metamode;
965: }
966: $Apache::lonxml::metamode=0;
967: $Apache::lonxml::redirection++;
968: push (@Apache::lonxml::outputstack, '');
1.55 albertel 969: }
970:
971: sub endredirection {
1.328 albertel 972: if (!$Apache::lonxml::redirection) {
1.380 www 973: &Apache::lonxml::error("Endredirection was called before a startredirection, perhaps you have unbalanced tags. Some debugging information:".join ":",caller);
1.328 albertel 974: return '';
975: }
976: $Apache::lonxml::redirection--;
977: if (!$Apache::lonxml::redirection) {
978: $Apache::lonxml::metamode=$metamode_was;
979: }
980: pop @Apache::lonxml::outputstack;
1.97 albertel 981: }
1.459 albertel 982: sub in_redirection {
983: return ($Apache::lonxml::redirection > 0)
984: }
1.97 albertel 985:
986: sub end_tag {
987: my ($tagstack,$parstack,$token)=@_;
988: pop(@$tagstack);
989: pop(@$parstack);
990: &decreasedepth($token);
1.55 albertel 991: }
992:
1.17 albertel 993: sub initdepth {
994: @Apache::lonxml::depthcounter=();
1.439 albertel 995: undef($Apache::lonxml::last_depth_count);
1.17 albertel 996: }
997:
1.438 albertel 998:
1.339 albertel 999: my @timers;
1000: my $lasttime;
1.438 albertel 1001: # @Apache::lonxml::depthcounter -> count of tags that exist so
1002: # far at each level
1.439 albertel 1003: # $Apache::lonxml::last_depth_count -> when ascending, need to
1004: # remember the count for the level below the current level (for
1005: # example going from 1_2 -> 1 -> 1_3 need to remember the 2 )
1.438 albertel 1006:
1.17 albertel 1007: sub increasedepth {
1.19 albertel 1008: my ($token) = @_;
1.439 albertel 1009: push(@Apache::lonxml::depthcounter,$Apache::lonxml::last_depth_count+1);
1010: undef($Apache::lonxml::last_depth_count);
1.340 albertel 1011: my $time;
1012: if ($Apache::lonxml::debug eq "1") {
1013: push(@timers,[&gettimeofday()]);
1014: $time=&tv_interval($lasttime);
1015: $lasttime=[&gettimeofday()];
1016: }
1.439 albertel 1017: my $spacing=' 'x($#Apache::lonxml::depthcounter);
1.438 albertel 1018: $Apache::lonxml::curdepth=join('_',@Apache::lonxml::depthcounter);
1.439 albertel 1019: # &Apache::lonxml::debug("s$spacing$Apache::lonxml::depth : $Apache::lonxml::olddepth : $Apache::lonxml::curdepth : $token->[1] : $time");
1.54 albertel 1020: #print "<br />s $Apache::lonxml::depth : $Apache::lonxml::olddepth : $curdepth : $token->[1]\n";
1.17 albertel 1021: }
1022:
1023: sub decreasedepth {
1.19 albertel 1024: my ($token) = @_;
1.439 albertel 1025: if ( $#Apache::lonxml::depthcounter == -1) {
1026: &Apache::lonxml::warning(&mt("Missing tags, unable to properly run file."));
1.43 albertel 1027: }
1.439 albertel 1028: $Apache::lonxml::last_depth_count = pop(@Apache::lonxml::depthcounter);
1029:
1.340 albertel 1030: my ($timer,$time);
1031: if ($Apache::lonxml::debug eq "1") {
1032: $timer=pop(@timers);
1033: $time=&tv_interval($lasttime);
1034: $lasttime=[&gettimeofday()];
1035: }
1.439 albertel 1036: my $spacing=' 'x($#Apache::lonxml::depthcounter);
1037: $Apache::lonxml::curdepth = join('_',@Apache::lonxml::depthcounter);
1038: # &Apache::lonxml::debug("e$spacing$Apache::lonxml::depth : $Apache::lonxml::olddepth : $Apache::lonxml::curdepth : $token->[1] : $time : ".&tv_interval($timer));
1.54 albertel 1039: #print "<br />e $Apache::lonxml::depth : $Apache::lonxml::olddepth : $token->[1] : $curdepth\n";
1.1 sakharuk 1040: }
1.19 albertel 1041:
1.399 albertel 1042: sub get_id {
1043: my ($parstack,$safeeval)=@_;
1044: my $id= &Apache::lonxml::get_param('id',$parstack,$safeeval);
1.449 albertel 1045: if ($env{'request.state'} eq 'construct' && $id =~ /([._]|[^\w\d\s[:punct:]])/) {
1.498 bisitz 1046: &error(&mt('ID [_1] contains invalid characters. IDs are only allowed to contain letters, numbers, spaces and -','"<tt>'.$id.'</tt>"'));
1.399 albertel 1047: }
1048: if ($id =~ /^\s*$/) { $id = $Apache::lonxml::curdepth; }
1049: return $id;
1050: }
1051:
1.180 albertel 1052: sub get_all_text_unbalanced {
1.190 albertel 1053: #there is a copy of this in lonpublisher.pm
1.326 albertel 1054: my($tag,$pars)= @_;
1055: my $token;
1056: my $result='';
1057: $tag='<'.$tag.'>';
1058: while ($token = $$pars[-1]->get_token) {
1059: if (($token->[0] eq 'T')||($token->[0] eq 'C')||($token->[0] eq 'D')) {
1.386 albertel 1060: if ($token->[0] eq 'T' && $token->[2]) {
1.382 albertel 1061: $result.='<![CDATA['.$token->[1].']]>';
1062: } else {
1063: $result.=$token->[1];
1064: }
1.326 albertel 1065: } elsif ($token->[0] eq 'PI') {
1066: $result.=$token->[2];
1067: } elsif ($token->[0] eq 'S') {
1068: $result.=$token->[4];
1069: } elsif ($token->[0] eq 'E') {
1070: $result.=$token->[2];
1071: }
1072: if ($result =~ /\Q$tag\E/is) {
1073: ($result,my $redo)=$result =~ /(.*)\Q$tag\E(.*)/is;
1074: #&Apache::lonxml::debug('Got a winner with leftovers ::'.$2);
1075: #&Apache::lonxml::debug('Result is :'.$1);
1076: $redo=$tag.$redo;
1077: &Apache::lonxml::newparser($pars,\$redo);
1078: last;
1079: }
1080: }
1081: return $result
1.462 foxr 1082:
1.204 albertel 1083: }
1084:
1.462 foxr 1085: #########################################################################
1086: # #
1087: # bubble line counter management #
1088: # #
1089: #########################################################################
1090:
1.447 albertel 1091: =pod
1092:
1093: For bubble grading mode and exam bubble printing mode, the tracking of
1094: the current 'bubble line number' is stored in the %env element
1095: 'form.counter', and is modifed and handled by the following routines.
1096:
1097: The value of it is stored in $Apache:lonxml::counter when live and
1098: stored back to env after done.
1099:
1100: =item &increment_counter($increment);
1101:
1102: Increments the internal counter environment variable a specified amount
1103:
1104: Optional Arguments:
1105: $increment - amount to increment by (defaults to 1)
1.462 foxr 1106: Also 1 if the value is negative or zero.
1.467 foxr 1107: $part_response - A concatenation of the part and response id
1108: identifying exactly what is being 'answered'.
1109:
1.447 albertel 1110:
1111: =cut
1112:
1.204 albertel 1113: sub increment_counter {
1.467 foxr 1114: my ($increment, $part_response) = @_;
1.481 raeburn 1115: if ($env{'form.grade_noincrement'}) { return; }
1.462 foxr 1116: if (!defined($increment) || $increment le 0) {
1117: $increment = 1;
1118: }
1119: $Apache::lonxml::counter += $increment;
1120:
1.466 foxr 1121: # If the caller supplied the response_id parameter,
1.462 foxr 1122: # Maintain its counter.. creating if necessary.
1123:
1.470 albertel 1124: if (defined($part_response)) {
1.467 foxr 1125: if (!defined($Apache::lonxml::counters_per_part{$part_response})) {
1126: $Apache::lonxml::counters_per_part{$part_response} = 0;
1.462 foxr 1127: }
1.467 foxr 1128: $Apache::lonxml::counters_per_part{$part_response} += $increment;
1129: my $new_value = $Apache::lonxml::counters_per_part{$part_response};
1.247 albertel 1130: }
1.462 foxr 1131:
1.289 sakharuk 1132: $Apache::lonxml::counter_changed=1;
1.204 albertel 1133: }
1134:
1.447 albertel 1135: =pod
1136:
1.461 foxr 1137: =item &init_counter($increment);
1.447 albertel 1138:
1139: Initialize the internal counter environment variable
1140:
1141: =cut
1142:
1.204 albertel 1143: sub init_counter {
1.391 albertel 1144: if ($env{'request.state'} eq 'construct') {
1145: $Apache::lonxml::counter=1;
1146: $Apache::lonxml::counter_changed=1;
1147: } elsif (defined($env{'form.counter'})) {
1.372 albertel 1148: $Apache::lonxml::counter=$env{'form.counter'};
1.247 albertel 1149: $Apache::lonxml::counter_changed=0;
1.237 sakharuk 1150: } else {
1.204 albertel 1151: $Apache::lonxml::counter=1;
1.247 albertel 1152: $Apache::lonxml::counter_changed=1;
1.204 albertel 1153: }
1154: }
1155:
1156: sub store_counter {
1.474 raeburn 1157: &Apache::lonnet::appenv({'form.counter' => $Apache::lonxml::counter});
1.401 albertel 1158: $Apache::lonxml::counter_changed=0;
1.204 albertel 1159: return '';
1.180 albertel 1160: }
1161:
1.398 albertel 1162: {
1163: my $state;
1164: sub clear_problem_counter {
1165: undef($state);
1166: &Apache::lonnet::delenv('form.counter');
1167: &Apache::lonxml::init_counter();
1168: &Apache::lonxml::store_counter();
1169: }
1170:
1171: sub remember_problem_counter {
1.422 albertel 1172: &Apache::lonnet::transfer_profile_to_env(undef,undef,1);
1.398 albertel 1173: $state = $env{'form.counter'};
1174: }
1175:
1176: sub restore_problem_counter {
1177: if (defined($state)) {
1.474 raeburn 1178: &Apache::lonnet::appenv({'form.counter' => $state});
1.398 albertel 1179: }
1180: }
1.401 albertel 1181: sub get_problem_counter {
1182: if ($Apache::lonxml::counter_changed) { &store_counter() }
1.422 albertel 1183: &Apache::lonnet::transfer_profile_to_env(undef,undef,1);
1.401 albertel 1184: return $env{'form.counter'};
1185: }
1.398 albertel 1186: }
1187:
1.462 foxr 1188: =pod
1189:
1.468 albertel 1190: =item bubble_lines_for_part(part_response)
1.462 foxr 1191:
1192: Returns the number of lines required to get a response for
1.467 foxr 1193: $part_response (this is just $Apache::lonxml::counters_per_part{$part_response}
1.462 foxr 1194:
1195: =cut
1196:
1197: sub bubble_lines_for_part {
1.467 foxr 1198: my ($part_response) = @_;
1.462 foxr 1199:
1.467 foxr 1200: if (!defined($Apache::lonxml::counters_per_part{$part_response})) {
1.462 foxr 1201: return 0;
1202: } else {
1.467 foxr 1203: return $Apache::lonxml::counters_per_part{$part_response};
1.462 foxr 1204: }
1205: }
1206:
1207: =pod
1208:
1209: =item clear_bubble_lines_for_part
1210:
1211: Clears the hash of bubble lines per part. If a caller
1212: needs to analyze several resources this should be called between
1213: resources to reset the hash for each problem being analyzed.
1214:
1215: =cut
1216:
1217: sub clear_bubble_lines_for_part {
1218: undef(%Apache::lonxml::counters_per_part);
1219: }
1220:
1221: =pod
1222:
1.468 albertel 1223: =item set_bubble_lines(part_response, value)
1.462 foxr 1224:
1225: If there is a problem part, that for whatever reason
1226: requires bubble lines that are not
1227: the same as the counter increment, it can call this sub during
1228: analysis to set its hash value explicitly.
1229:
1230: =cut
1231:
1232: sub set_bubble_lines {
1.467 foxr 1233: my ($part_response, $value) = @_;
1.462 foxr 1234:
1.467 foxr 1235: $Apache::lonxml::counters_per_part{$part_response} = $value;
1.462 foxr 1236: }
1237:
1238: =pod
1239:
1240: =item get_bubble_line_hash
1241:
1242: Returns the current bubble line hash. This is assumed to
1243: be small so we return a copy
1244:
1245:
1246: =cut
1247:
1248: sub get_bubble_line_hash {
1249: return %Apache::lonxml::counters_per_part;
1250: }
1251:
1252:
1253: #--------------------------------------------------
1254:
1.19 albertel 1255: sub get_all_text {
1.270 albertel 1256: my($tag,$pars,$style)= @_;
1257: my $gotfullstack=1;
1258: if (ref($pars) ne 'ARRAY') {
1259: $gotfullstack=0;
1260: $pars=[$pars];
1261: }
1262: if (ref($style) ne 'HASH') {
1263: $style={};
1264: }
1265: my $depth=0;
1266: my $token;
1267: my $result='';
1268: if ( $tag =~ m:^/: ) {
1269: my $tag=substr($tag,1);
1270: #&Apache::lonxml::debug("have:$tag:");
1271: my $top_empty=0;
1272: while (($depth >=0) && ($#$pars > -1) && (!$top_empty)) {
1273: while (($depth >=0) && ($token = $$pars[-1]->get_token)) {
1274: #&Apache::lonxml::debug("e token:$token->[0]:$depth:$token->[1]:".$#$pars.":".$#Apache::lonxml::pwd);
1275: if (($token->[0] eq 'T')||($token->[0] eq 'C')||($token->[0] eq 'D')) {
1.382 albertel 1276: if ($token->[2]) {
1277: $result.='<![CDATA['.$token->[1].']]>';
1278: } else {
1279: $result.=$token->[1];
1280: }
1.270 albertel 1281: } elsif ($token->[0] eq 'PI') {
1282: $result.=$token->[2];
1283: } elsif ($token->[0] eq 'S') {
1.316 albertel 1284: if ($token->[1] =~ /^\Q$tag\E$/i) { $depth++; }
1285: if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_ON$/) { $Apache::lonxml::usestyle=1; }
1286: if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_OFF$/) { $Apache::lonxml::usestyle=0; }
1.270 albertel 1287: $result.=$token->[4];
1288: } elsif ($token->[0] eq 'E') {
1.316 albertel 1289: if ( $token->[1] =~ /^\Q$tag\E$/i) { $depth--; }
1.270 albertel 1290: #skip sending back the last end tag
1.283 albertel 1291: if ($depth == 0 && exists($$style{'/'.$token->[1]}) && $Apache::lonxml::usestyle) {
1.270 albertel 1292: my $string=
1293: '<LONCAPA_INTERNAL_TURN_STYLE_OFF end="yes" />'.
1294: $$style{'/'.$token->[1]}.
1295: $token->[2].
1296: '<LONCAPA_INTERNAL_TURN_STYLE_ON />';
1297: &Apache::lonxml::newparser($pars,\$string);
1298: #&Apache::lonxml::debug("reParsing $string");
1299: next;
1300: }
1301: if ($depth > -1) {
1302: $result.=$token->[2];
1303: } else {
1304: $$pars[-1]->unget_token($token);
1305: }
1306: }
1307: }
1308: if (($depth >=0) && ($#$pars == 0) ) { $top_empty=1; }
1309: if (($depth >=0) && ($#$pars > 0) ) {
1310: pop(@$pars);
1311: pop(@Apache::lonxml::pwd);
1312: }
1313: }
1314: if ($top_empty && $depth >= 0) {
1315: #never found the end tag ran out of text, throw error send back blank
1316: &error('Never found end tag for <'.$tag.
1317: '> current string <pre>'.
1.314 albertel 1318: &HTML::Entities::encode($result,'<>&"').
1.270 albertel 1319: '</pre>');
1320: if ($gotfullstack) {
1321: my $newstring='</'.$tag.'>'.$result;
1322: &Apache::lonxml::newparser($pars,\$newstring);
1323: }
1324: $result='';
1325: }
1326: } else {
1327: while ($#$pars > -1) {
1328: while ($token = $$pars[-1]->get_token) {
1329: #&Apache::lonxml::debug("s token:$token->[0]:$depth:$token->[1]");
1330: if (($token->[0] eq 'T')||($token->[0] eq 'C')||
1331: ($token->[0] eq 'D')) {
1.382 albertel 1332: if ($token->[2]) {
1333: $result.='<![CDATA['.$token->[1].']]>';
1334: } else {
1335: $result.=$token->[1];
1336: }
1.270 albertel 1337: } elsif ($token->[0] eq 'PI') {
1338: $result.=$token->[2];
1339: } elsif ($token->[0] eq 'S') {
1.316 albertel 1340: if ( $token->[1] =~ /^\Q$tag\E$/i) {
1.270 albertel 1341: $$pars[-1]->unget_token($token); last;
1342: } else {
1343: $result.=$token->[4];
1344: }
1.316 albertel 1345: if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_ON$/) { $Apache::lonxml::usestyle=1; }
1346: if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_OFF$/) { $Apache::lonxml::usestyle=0; }
1.270 albertel 1347: } elsif ($token->[0] eq 'E') {
1348: $result.=$token->[2];
1349: }
1350: }
1351: if (($#$pars > 0) ) {
1352: pop(@$pars);
1353: pop(@Apache::lonxml::pwd);
1354: } else { last; }
1355: }
1356: }
1357: #&Apache::lonxml::debug("Exit:$result:");
1358: return $result
1.19 albertel 1359: }
1360:
1.23 albertel 1361: sub newparser {
1362: my ($parser,$contentref,$dir) = @_;
1.167 albertel 1363: push (@$parser,HTML::LCParser->new($contentref));
1.365 albertel 1364: $$parser[-1]->xml_mode(1);
1365: $$parser[-1]->marked_sections(1);
1.23 albertel 1366: if ( $dir eq '' ) {
1367: push (@Apache::lonxml::pwd, $Apache::lonxml::pwd[$#Apache::lonxml::pwd]);
1368: } else {
1369: push (@Apache::lonxml::pwd, $dir);
1370: }
1371: }
1.1 sakharuk 1372:
1.8 albertel 1373: sub parstring {
1.417 albertel 1374: my ($token) = @_;
1375: my (@vars,@values);
1376: foreach my $attr (@{$token->[3]}) {
1377: if ($attr!~/\W/) {
1378: my $val=$token->[2]->{$attr};
1379: $val =~ s/([\%\@\\\"\'])/\\$1/g;
1380: $val =~ s/(\$[^\{a-zA-Z_])/\\$1/g;
1381: $val =~ s/(\$)$/\\$1/;
1382: #if ($val =~ m/^[\%\@]/) { $val="\\".$val; }
1383: push(@vars,"\$$attr");
1384: push(@values,"\"$val\"");
1385: }
1386: }
1387: my $var_init =
1388: (@vars) ? 'my ('.join(',',@vars).') = ('.join(',',@values).');'
1389: : '';
1390: return $var_init;
1.8 albertel 1391: }
1.22 albertel 1392:
1.384 albertel 1393: sub extlink {
1394: my ($res,$exact)=@_;
1395: if (!$exact) {
1396: $res=&Apache::lonnet::hreflocation($Apache::lonxml::pwd[-1],$res);
1397: }
1398: push(@Apache::lonxml::extlinks,$res)
1399: }
1400:
1.34 www 1401: sub writeallows {
1.126 www 1402: unless ($#extlinks>=0) { return; }
1.377 albertel 1403: my $thisurl = &Apache::lonnet::clutter(shift);
1.372 albertel 1404: if ($env{'httpref.'.$thisurl}) {
1405: $thisurl=$env{'httpref.'.$thisurl};
1.111 www 1406: }
1.34 www 1407: my $thisdir=$thisurl;
1408: $thisdir=~s/\/[^\/]+$//;
1409: my %httpref=();
1.142 albertel 1410: foreach (@extlinks) {
1.34 www 1411: $httpref{'httpref.'.
1.444 albertel 1412: &Apache::lonnet::hreflocation($thisdir,&unescape($_))}=$thisurl;
1.142 albertel 1413: }
1.126 www 1414: @extlinks=();
1.474 raeburn 1415: &Apache::lonnet::appenv(\%httpref);
1.34 www 1416: }
1417:
1.281 albertel 1418: sub register_ssi {
1419: my ($url,%form)=@_;
1420: push (@Apache::lonxml::ssi_info,{'url'=>$url,'form'=>\%form});
1421: return '';
1422: }
1423:
1424: sub do_registered_ssi {
1425: foreach my $info (@Apache::lonxml::ssi_info) {
1426: my %form=%{ $info->{'form'}};
1427: my $url=$info->{'url'};
1428: &Apache::lonnet::ssi($url,%form);
1429: }
1430: }
1.448 albertel 1431:
1432: sub add_script_result {
1433: my ($display) = @_;
1434: push(@script_var_displays, $display);
1435: }
1436:
1.66 www 1437: #
1438: # Afterburner handles anchors, highlights and links
1439: #
1440: sub afterburn {
1441: my $result=shift;
1.154 albertel 1442: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
1443: ['highlight','anchor','link']);
1.372 albertel 1444: if ($env{'form.highlight'}) {
1445: foreach (split(/\,/,$env{'form.highlight'})) {
1.66 www 1446: my $anchorname=$_;
1447: my $matchthis=$anchorname;
1448: $matchthis=~s/\_+/\\s\+/g;
1.317 albertel 1449: $result=~s/(\Q$matchthis\E)/\<font color=\"red\"\>$1\<\/font\>/gs;
1.142 albertel 1450: }
1.66 www 1451: }
1.372 albertel 1452: if ($env{'form.link'}) {
1453: foreach (split(/\,/,$env{'form.link'})) {
1.66 www 1454: my ($anchorname,$linkurl)=split(/\>/,$_);
1455: my $matchthis=$anchorname;
1456: $matchthis=~s/\_+/\\s\+/g;
1.317 albertel 1457: $result=~s/(\Q$matchthis\E)/\<a href=\"$linkurl\"\>$1\<\/a\>/gs;
1.142 albertel 1458: }
1.66 www 1459: }
1.372 albertel 1460: if ($env{'form.anchor'}) {
1461: my $anchorname=$env{'form.anchor'};
1.66 www 1462: my $matchthis=$anchorname;
1463: $matchthis=~s/\_+/\\s\+/g;
1.317 albertel 1464: $result=~s/(\Q$matchthis\E)/\<a name=\"$anchorname\"\>$1\<\/a\>/s;
1.66 www 1465: $result.=(<<"ENDSCRIPT");
1.226 albertel 1466: <script type="text/javascript">
1.66 www 1467: document.location.hash='$anchorname';
1468: </script>
1469: ENDSCRIPT
1470: }
1471: return $result;
1472: }
1473:
1.79 www 1474: sub storefile {
1475: my ($file,$contents)=@_;
1.290 albertel 1476: &Apache::lonnet::correct_line_ends(\$contents);
1.79 www 1477: if (my $fh=Apache::File->new('>'.$file)) {
1478: print $fh $contents;
1479: $fh->close();
1.271 www 1480: return 1;
1.147 albertel 1481: } else {
1.482 bisitz 1482: &warning(&mt('Unable to save file [_1]','<tt>'.$file.'</tt>'));
1.271 www 1483: return 0;
1.79 www 1484: }
1485: }
1486:
1.151 albertel 1487: sub createnewhtml {
1.321 www 1488: my $title=&mt('Title of document goes here');
1489: my $body=&mt('Body of document goes here');
1490: my $filecontents=(<<SIMPLECONTENT);
1.78 www 1491: <html>
1492: <head>
1.321 www 1493: <title>$title</title>
1.78 www 1494: </head>
1495: <body bgcolor="#FFFFFF">
1.321 www 1496: $body
1.78 www 1497: </body>
1498: </html>
1499: SIMPLECONTENT
1.321 www 1500: return $filecontents;
1.151 albertel 1501: }
1502:
1.274 albertel 1503: sub createnewsty {
1504: my $filecontents=(<<SIMPLECONTENT);
1505: <definetag name="">
1506: <render>
1507: <web></web>
1508: <tex></tex>
1509: </render>
1510: </definetag>
1511: SIMPLECONTENT
1512: return $filecontents;
1513: }
1514:
1.493 raeburn 1515: sub createnewjs {
1516: my $filecontents=(<<SIMPLECONTENT);
1517: <script type="text/javascript" language="Javascript">
1518:
1519: </script>
1520: SIMPLECONTENT
1521: return $filecontents;
1522: }
1523:
1.472 www 1524: sub verify_html {
1525: my ($filecontents)=@_;
1526: if ($filecontents!~/(?:\<|\<\;)(?:html|xml)[^\<]*(?:\>|\>\;)/is) {
1527: return &mt('File does not have [_1] or [_2] starting tag','<html>','<xml>');
1528: }
1529: if ($filecontents!~/(?:\<|\<\;)\/(?:html|xml)(?:\>|\>\;)/is) {
1530: return &mt('File does not have [_1] or [_2] ending tag','<html>','<xml>');
1531: }
1532: if ($filecontents!~/(?:\<|\<\;)(?:body|frameset)[^\<]*(?:\>|\>\;)/is) {
1533: return &mt('File does not have [_1] or [_2] starting tag','<body>','<frameset>');
1534: }
1535: if ($filecontents!~/(?:\<|\<\;)\/(?:body|frameset)[^\<]*(?:\>|\>\;)/is) {
1536: return &mt('File does not have [_1] or [_2] ending tag','<body>','<frameset>');
1537: }
1538: return '';
1539: }
1.147 albertel 1540:
1.478 www 1541: sub renderingoptions {
1542: my %langchoices=('' => '');
1543: foreach (&Apache::loncommon::languageids()) {
1544: if (&Apache::loncommon::supportedlanguagecode($_)) {
1545: $langchoices{&Apache::loncommon::supportedlanguagecode($_)}
1546: = &Apache::loncommon::plainlanguagedescription($_);
1547: }
1548: }
1549: return
1550: '<span class="LC_nobreak">'.
1.479 bisitz 1551: &mt('Language:').' '.
1.478 www 1552: &Apache::loncommon::select_form($env{'form.languages'},'languages',
1553: %langchoices).'
1554: </span>
1555: <span class="LC_nobreak">'.
1.479 bisitz 1556: &mt('Math Rendering:').' '.
1.478 www 1557: &Apache::loncommon::select_form($env{'form.texengine'},'texengine',
1558: ('' => '',
1.483 bisitz 1559: 'tth' => 'tth (TeX to HTML)',
1.478 www 1560: 'jsMath' => 'jsMath',
1.479 bisitz 1561: 'mimetex' => 'mimetex (Convert to Images)')).'
1.478 www 1562: </span>';
1563: }
1564:
1.151 albertel 1565: sub inserteditinfo {
1.470 albertel 1566: my ($filecontents, $filetype, $filename)=@_;
1.314 albertel 1567: $filecontents = &HTML::Entities::encode($filecontents,'<>&"');
1.274 albertel 1568: my $xml_help = '';
1.321 www 1569: my $initialize='';
1.452 albertel 1570: my $textarea_id = 'filecont';
1.492 raeburn 1571: my $dragmath_button;
1.452 albertel 1572: my ($add_to_onload, $add_to_onresize);
1.456 albertel 1573: $initialize=&Apache::lonhtmlcommon::spellheader();
1574: if ($filetype eq 'html'
1575: && (!&Apache::lonhtmlcommon::htmlareablocked() &&
1576: &Apache::lonhtmlcommon::htmlareabrowser())) {
1.463 albertel 1577: $textarea_id .= '___Frame';
1578: my $lang = &Apache::lonhtmlcommon::htmlarea_lang();
1.456 albertel 1579: $initialize.=(<<FULLPAGE);
1.321 www 1580: <script type="text/javascript">
1.463 albertel 1581: lonca
1.321 www 1582: function initDocument() {
1.463 albertel 1583: var oFCKeditor = new FCKeditor('filecont');
1584: oFCKeditor.Config['CustomConfigurationsPath'] = '/fckeditor/loncapaconfig.js' ;
1585: oFCKeditor.Config['FullPage'] = true
1586: oFCKeditor.Config['AutoDetectLanguage'] = false;
1587: oFCKeditor.Config['DefaultLanguage'] = "$lang";
1588: oFCKeditor.ReplaceTextarea();
1589: }
1590: function check_if_dirty(editor) {
1591: if (editor.IsDirty()) {
1592: unClean();
1593: }
1594: }
1595: function FCKeditor_OnComplete(editor) {
1596: editor.Events.AttachEvent("OnSelectionChange",check_if_dirty);
1597: resize_textarea('$textarea_id','LC_aftertextarea');
1.321 www 1598: }
1599: </script>
1600: FULLPAGE
1.456 albertel 1601: } else {
1602: $initialize.=(<<FULLPAGE);
1.347 albertel 1603: <script type="text/javascript">
1604: function initDocument() {
1.453 albertel 1605: resize_textarea('$textarea_id','LC_aftertextarea');
1.347 albertel 1606: }
1607: </script>
1608: FULLPAGE
1.492 raeburn 1609: if ($filetype eq 'html') {
1610: $initialize .= "\n".&Apache::lonhtmlcommon::dragmath_js('EditMathPopup');
1611: $dragmath_button = &Apache::lonhtmlcommon::dragmath_button('filecont',1);
1612: }
1.456 albertel 1613: }
1614:
1615: $add_to_onload = 'initDocument();';
1616: $add_to_onresize = "resize_textarea('$textarea_id','LC_aftertextarea');";
1617:
1618: if ($filetype eq 'html') {
1.321 www 1619: $xml_help=&Apache::loncommon::helpLatexCheatsheet();
1.274 albertel 1620: }
1.452 albertel 1621:
1.254 albertel 1622: my $titledisplay=&display_title();
1.426 banghart 1623: my %lt=&Apache::lonlocal::texthash('st' => 'Save and Edit',
1624: 'vi' => 'Save and View',
1.427 banghart 1625: 'dv' => 'Discard Edits and View',
1.428 banghart 1626: 'un' => 'undo',
1.280 www 1627: 'ed' => 'Edit');
1.470 albertel 1628: my $spelllink .=&Apache::lonhtmlcommon::spelllink('xmledit','filecont');
1.451 albertel 1629: my $textarea_events = &Apache::edit::element_change_detection();
1630: my $form_events = &Apache::edit::form_change_detection();
1.491 raeburn 1631: my $htmlerror;
1632: if ($filetype eq 'html') {
1633: $htmlerror=&verify_html($filecontents);
1634: if ($htmlerror) {
1635: $htmlerror='<span class="LC_error">'.$htmlerror.'</span>';
1636: }
1.472 www 1637: }
1.78 www 1638: my $editfooter=(<<ENDFOOTER);
1.321 www 1639: $initialize
1.78 www 1640: <a name="editsection" />
1.451 albertel 1641: <form $form_events method="post" name="xmledit">
1.470 albertel 1642: <div class="LC_edit_problem_editxml_header">
1643: <table class="LC_edit_problem_header_title"><tr><td>
1644: $filename
1645: </td><td align="right">
1646: $xml_help
1647: </td></tr>
1648: </table>
1649: <div class="LC_edit_problem_discards">
1650: <input type="submit" name="discardview" accesskey="d" value="$lt{'dv'}" />
1651: <input type="submit" name="Undo" accesskey="u" value="$lt{'un'}" />
1.492 raeburn 1652: $dragmath_button $spelllink $htmlerror
1.470 albertel 1653: </div>
1654: <div class="LC_edit_problem_saves">
1655: <input type="submit" name="savethisfile" accesskey="s" value="$lt{'st'}" />
1656: <input type="submit" name="viewmode" accesskey="v" value="$lt{'vi'}" />
1657: </div>
1658: </div>
1659: <textarea $textarea_events style="width:100%" cols="80" rows="44" name="filecont" id="filecont">$filecontents</textarea>
1660: <div id="LC_aftertextarea">
1661: <br />
1662: $titledisplay
1663: </div>
1.78 www 1664: </form>
1.321 www 1665: </body>
1.78 www 1666: ENDFOOTER
1.452 albertel 1667: return ($editfooter,$add_to_onload,$add_to_onresize);;
1.78 www 1668: }
1669:
1.152 albertel 1670: sub get_target {
1.372 albertel 1671: my $viewgrades=&Apache::lonnet::allowed('vgr',$env{'request.course.id'});
1672: if ( $env{'request.state'} eq 'published') {
1673: if ( defined($env{'form.grade_target'})
1.152 albertel 1674: && ($viewgrades == 'F' )) {
1.372 albertel 1675: return ($env{'form.grade_target'});
1676: } elsif (defined($env{'form.grade_target'})) {
1677: if (($env{'form.grade_target'} eq 'web') ||
1678: ($env{'form.grade_target'} eq 'tex') ) {
1679: return $env{'form.grade_target'}
1.153 albertel 1680: } else {
1681: return 'web';
1682: }
1.152 albertel 1683: } else {
1684: return 'web';
1685: }
1.372 albertel 1686: } elsif ($env{'request.state'} eq 'construct') {
1687: if ( defined($env{'form.grade_target'})) {
1688: return ($env{'form.grade_target'});
1.152 albertel 1689: } else {
1690: return 'web';
1691: }
1692: } else {
1693: return 'web';
1694: }
1695: }
1696:
1.24 sakharuk 1697: sub handler {
1.255 sakharuk 1698: my $request=shift;
1.493 raeburn 1699:
1.255 sakharuk 1700: my $target=&get_target();
1.372 albertel 1701: $Apache::lonxml::debug=$env{'user.debug'};
1.255 sakharuk 1702:
1.364 albertel 1703: &Apache::loncommon::content_type($request,'text/html');
1.255 sakharuk 1704: &Apache::loncommon::no_cache($request);
1.372 albertel 1705: if ($env{'request.state'} eq 'published') {
1.363 albertel 1706: $request->set_last_modified(&Apache::lonnet::metadata($request->uri,
1707: 'lastrevisiondate'));
1708: }
1.499 ! raeburn 1709: # Embedded Flash movies from Camtasia served from https will not display in IE
! 1710: # if XML config file has expired from cache.
! 1711: if ($ENV{'SERVER_PORT'} == 443) {
! 1712: if ($request->uri =~ /\.xml$/) {
! 1713: my ($httpbrowser,$clientbrowser) =
! 1714: &Apache::loncommon::decode_user_agent($request);
! 1715: if ($clientbrowser =~ /^explorer$/i) {
! 1716: delete $request->headers_out->{'Cache-control'};
! 1717: delete $request->headers_out->{'Pragma'};
! 1718: my $expiration = time + 60;
! 1719: my $date=strftime("%a, %d %b %Y %H:%M:%S GMT",gmtime($expiration));
! 1720: $request->headers_out->set("Expires" => $date);
! 1721: }
! 1722: }
! 1723: }
1.255 sakharuk 1724: $request->send_http_header;
1725:
1726: return OK if $request->header_only;
1.68 www 1727:
1728:
1.255 sakharuk 1729: my $file=&Apache::lonnet::filelocation("",$request->uri);
1.274 albertel 1730: my $filetype;
1.493 raeburn 1731: if ($file =~ /\.(sty|css|js|txt)$/) {
1732: $filetype=$1;
1.274 albertel 1733: } else {
1734: $filetype='html';
1735: }
1.493 raeburn 1736:
1.78 www 1737: #
1738: # Edit action? Save file.
1739: #
1.428 banghart 1740: if (!($env{'request.state'} eq 'published')) {
1741: if ($env{'form.savethisfile'} || $env{'form.viewmode'} || $env{'form.Undo'}) {
1.429 albertel 1742: my $html_file=&Apache::lonnet::getfile($file);
1743: my $error = &Apache::lonhomework::handle_save_or_undo($request, \$html_file, \$env{'form.filecont'});
1.472 www 1744: if ($env{'form.savethisfile'}) {
1745: $env{'form.editmode'}='Edit'; #force edit mode
1746: }
1.255 sakharuk 1747: }
1748: }
1749: my %mystyle;
1750: my $result = '';
1751: my $filecontents=&Apache::lonnet::getfile($file);
1752: if ($filecontents eq -1) {
1.402 albertel 1753: my $start_page=&Apache::loncommon::start_page('File Error');
1.412 albertel 1754: my $end_page=&Apache::loncommon::end_page();
1.495 bisitz 1755: my $errormsg='<p class="LC_error">'
1756: .&mt('File not found: [_1]'
1757: ,'<span class="LC_filename">'.$file.'</span>')
1758: .'</p>';
1.255 sakharuk 1759: $result=(<<ENDNOTFOUND);
1.402 albertel 1760: $start_page
1.495 bisitz 1761: $errormsg
1.402 albertel 1762: $end_page
1.78 www 1763: ENDNOTFOUND
1.343 albertel 1764: $filecontents='';
1.372 albertel 1765: if ($env{'request.state'} ne 'published') {
1.274 albertel 1766: if ($filetype eq 'sty') {
1767: $filecontents=&createnewsty();
1.493 raeburn 1768: } elsif ($filetype eq 'js') {
1769: $filecontents=&createnewjs();
1770: } elsif (($filetype ne 'css') && ($filetype ne 'txt')) {
1.274 albertel 1771: $filecontents=&createnewhtml();
1772: }
1.372 albertel 1773: $env{'form.editmode'}='Edit'; #force edit mode
1.255 sakharuk 1774: }
1775: } else {
1.372 albertel 1776: unless ($env{'request.state'} eq 'published') {
1.343 albertel 1777: if ($filecontents=~/BEGIN LON-CAPA Internal/) {
1.381 www 1778: &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 1779: }
1.264 www 1780: #
1781: # we are in construction space, see if edit mode forced
1.385 albertel 1782: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
1783: ['editmode']);
1.255 sakharuk 1784: }
1.427 banghart 1785: if (!$env{'form.editmode'} || $env{'form.viewmode'} || $env{'form.discardview'}) {
1.493 raeburn 1786: if ($filetype eq 'html' || $filetype eq 'sty') {
1787: &Apache::structuretags::reset_problem_globals();
1788: $result = &Apache::lonxml::xmlparse($request,$target,
1789: $filecontents,'',%mystyle);
1.455 albertel 1790: # .html files may contain <problem> or <Task> need to clean
1791: # up if it did
1.493 raeburn 1792: &Apache::structuretags::reset_problem_globals();
1793: &Apache::lonhomework::finished_parsing();
1794: } else {
1795: $result = $filecontents;
1796: }
1.385 albertel 1797: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
1798: ['rawmode']);
1.395 albertel 1799: if ($env{'form.rawmode'}) { $result = $filecontents; }
1.495 bisitz 1800: if ($filetype ne 'html') {
1.493 raeburn 1801: my $nochgview = 1;
1.495 bisitz 1802: my $controls = '';
1803: if ($env{'request.state'} eq 'construct') {
1804: $controls = &Apache::loncommon::head_subbox(
1805: &Apache::loncommon::CSTR_pageheader()
1806: .&Apache::londefdef::edit_controls($nochgview));
1807: }
1.493 raeburn 1808: if ($filetype ne 'sty') {
1809: $result =~ s/</</g;
1810: $result =~ s/>/>/g;
1811: $result = '<table class="LC_sty_begin">'.
1812: '<tr><td><b><pre>'.$result.
1813: '</pre></b></td></tr></table>';
1814: }
1815: if ($env{'environment.remote'} eq 'off') {
1.495 bisitz 1816: my $brcrum;
1817: if ($env{'request.state'} eq 'construct') {
1.496 bisitz 1818: $brcrum = [{'href' => &Apache::loncommon::authorspace(),
1.495 bisitz 1819: 'text' => 'Construction Space'},
1820: {'href' => '',
1821: 'text' => 'Editor'}];
1822: } else {
1823: $brcrum = ''; # FIXME: Where are we?
1824: }
1825: my %options = ('bread_crumbs' => $brcrum,
1826: 'bgcolor' => '#FFFFFF');
1827: $result =
1828: &Apache::loncommon::start_page(undef,undef,\%options)
1829: .$controls
1830: .$result
1831: .&Apache::loncommon::end_page();
1.493 raeburn 1832: } else {
1833: $result = $controls.$result;
1834: }
1835: }
1.495 bisitz 1836: }
1.147 albertel 1837: }
1.456 albertel 1838:
1.78 www 1839: #
1840: # Edit action? Insert editing commands
1841: #
1.372 albertel 1842: unless ($env{'request.state'} eq 'published') {
1.427 banghart 1843: if ($env{'form.editmode'} && (!($env{'form.viewmode'})) && (!($env{'form.discardview'})))
1.450 albertel 1844: {
1.470 albertel 1845: my $displayfile=$request->uri;
1846: $displayfile=~s/^\/[^\/]*//;
1847:
1.452 albertel 1848: my ($edit_info, $add_to_onload, $add_to_onresize)=
1.470 albertel 1849: &inserteditinfo($filecontents,$filetype,$displayfile);
1.450 albertel 1850:
1851: my %options =
1852: ('add_entries' =>
1.495 bisitz 1853: {'onresize' => $add_to_onresize,
1854: 'onload' => $add_to_onload, });
1855:
1856: $options{'bread_crumbs'} = [{
1.496 bisitz 1857: 'href' => &Apache::loncommon::authorspace(),
1.495 bisitz 1858: 'text' => 'Construction Space'},
1859: {'href' => '',
1860: 'text' => 'HTML Editor'}];
1.452 albertel 1861:
1.402 albertel 1862: if ($env{'environment.remote'} ne 'off') {
1863: $options{'bgcolor'} = '#FFFFFF';
1.450 albertel 1864: $options{'only_body'} = 1;
1.349 albertel 1865: }
1.452 albertel 1866: my $js =
1867: &Apache::edit::js_change_detection().
1868: &Apache::loncommon::resize_textarea_js();
1.451 albertel 1869: my $start_page = &Apache::loncommon::start_page(undef,$js,
1.402 albertel 1870: \%options);
1.495 bisitz 1871: $result = $start_page
1872: .&Apache::loncommon::head_subbox(
1873: &Apache::loncommon::CSTR_pageheader())
1874: .&Apache::lonxml::message_location()
1875: .$edit_info
1876: .&Apache::loncommon::end_page();
1.493 raeburn 1877: }
1.147 albertel 1878: }
1.402 albertel 1879: if ($filetype eq 'html') { &writeallows($request->uri); }
1.255 sakharuk 1880:
1.309 albertel 1881: &Apache::lonxml::add_messages(\$result);
1.255 sakharuk 1882: $request->print($result);
1883:
1884: return OK;
1.253 albertel 1885: }
1886:
1887: sub display_title {
1888: my $result;
1.372 albertel 1889: if ($env{'request.state'} eq 'construct') {
1.253 albertel 1890: my $title=&Apache::lonnet::gettitle();
1891: if (!defined($title) || $title eq '') {
1.372 albertel 1892: $title = $env{'request.filename'};
1.253 albertel 1893: $title = substr($title, rindex($title, '/') + 1);
1894: }
1.476 bisitz 1895: $result = "<script type='text/javascript'>top.document.title = '$title - LON-CAPA "
1896: .&mt('Construction Space')."';</script>";
1.253 albertel 1897: }
1898: return $result;
1.24 sakharuk 1899: }
1.147 albertel 1900:
1.22 albertel 1901: sub debug {
1.298 albertel 1902: if ($Apache::lonxml::debug eq "1") {
1903: $|=1;
1.300 albertel 1904: my $request=$Apache::lonxml::request;
1.388 albertel 1905: if (!$request) {
1906: eval { $request=Apache->request; };
1907: }
1908: if (!$request) {
1909: eval { $request=Apache2::RequestUtil->request; };
1910: }
1.314 albertel 1911: $request->print('<font size="-2"><pre>DEBUG:'.&HTML::Entities::encode($_[0],'<>&"')."</pre></font>\n");
1.346 albertel 1912: #&Apache::lonnet::logthis($_[0]);
1.298 albertel 1913: }
1.22 albertel 1914: }
1.49 albertel 1915:
1.348 albertel 1916: sub show_error_warn_msg {
1.372 albertel 1917: if ($env{'request.filename'} eq '/home/httpd/html/res/lib/templates/simpleproblem.problem' &&
1918: &Apache::lonnet::allowed('mdc',$env{'request.course.id'})) {
1.351 albertel 1919: return 1;
1920: }
1.348 albertel 1921: return (($Apache::lonxml::debug eq 1) ||
1.372 albertel 1922: ($env{'request.state'} eq 'construct') ||
1.348 albertel 1923: ($Apache::lonhomework::browse eq 'F'
1924: &&
1.372 albertel 1925: $env{'form.show_errors'} eq 'on'));
1.348 albertel 1926: }
1927:
1.22 albertel 1928: sub error {
1.454 albertel 1929: my @errors = @_;
1930:
1.336 albertel 1931: $errorcount++;
1.454 albertel 1932:
1.490 www 1933: $Apache::lonxml::internal_error=1;
1934:
1.454 albertel 1935: if (defined($Apache::inputtags::part)) {
1936: if ( @Apache::inputtags::response ) {
1937: push(@errors,
1938: &mt("This error occurred while processing response [_1] in part [_2]",
1939: $Apache::inputtags::response[-1],
1940: $Apache::inputtags::part));
1941: } else {
1942: push(@errors,
1943: &mt("This error occurred while processing part [_1]",
1944: $Apache::inputtags::part));
1945: }
1946: }
1947:
1.348 albertel 1948: if ( &show_error_warn_msg() ) {
1.336 albertel 1949: # If printing in construction space, put the error inside <pre></pre>
1950: push(@Apache::lonxml::error_messages,
1.484 bisitz 1951: $Apache::lonxml::warnings_error_header
1952: .'<div class="LC_error">'
1953: .'<b>'.&mt('ERROR:').' </b>'.join("<br />\n",@errors)
1954: ."</div>\n");
1.336 albertel 1955: $Apache::lonxml::warnings_error_header='';
1956: } else {
1957: my $errormsg;
1958: my ($symb)=&Apache::lonnet::symbread();
1959: if ( !$symb ) {
1960: #public or browsers
1.486 bisitz 1961: $errormsg=&mt("An error occurred while processing this resource. The author has been notified.");
1.403 albertel 1962: }
1.413 albertel 1963: my $host=$Apache::lonnet::perlvar{'lonHostID'};
1.476 bisitz 1964: push(@errors,
1965: &mt("The error occurred on host [_1]",
1966: "<tt>$host</tt>"));
1.454 albertel 1967:
1968: my $msg = join('<br />', @errors);
1969:
1.336 albertel 1970: #notify author
1.403 albertel 1971: &Apache::lonmsg::author_res_msg($env{'request.filename'},$msg);
1.336 albertel 1972: #notify course
1.372 albertel 1973: if ( $symb && $env{'request.course.id'} ) {
1.380 www 1974: my $cnum=$env{'course.'.$env{'request.course.id'}.'.num'};
1975: my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
1.440 albertel 1976: my (undef,%users)=&Apache::lonmsg::decide_receiver(undef,0,1,1,1);
1.372 albertel 1977: my $declutter=&Apache::lonnet::declutter($env{'request.filename'});
1.435 raeburn 1978: my $baseurl = &Apache::lonnet::clutter($declutter);
1.336 albertel 1979: my @userlist;
1980: foreach (keys %users) {
1981: my ($user,$domain) = split(/:/, $_);
1982: push(@userlist,"$user\@$domain");
1.380 www 1983: my $key=$declutter.'_'.$user.'_'.$domain;
1984: my %lastnotified=&Apache::lonnet::get('nohist_xmlerrornotifications',
1985: [$key],
1986: $cdom,$cnum);
1987: my $now=time;
1988: if ($now-$lastnotified{$key}>86400) {
1.434 raeburn 1989: my $title = &Apache::lonnet::gettitle($symb);
1990: my $sentmessage;
1.380 www 1991: &Apache::lonmsg::user_normal_msg($user,$domain,
1.435 raeburn 1992: "Error [$title]",$msg,'',$baseurl,'','',
1.434 raeburn 1993: \$sentmessage,$symb,$title,1);
1.380 www 1994: &Apache::lonnet::put('nohist_xmlerrornotifications',
1995: {$key => $now},
1996: $cdom,$cnum);
1997: }
1.336 albertel 1998: }
1.372 albertel 1999: if ($env{'request.role.adv'}) {
1.486 bisitz 2000: $errormsg=&mt("An error occurred while processing this resource. The course personnel ([_1]) and the author have been notified.",join(', ',@userlist));
1.336 albertel 2001: } else {
1.486 bisitz 2002: $errormsg=&mt("An error occurred while processing this resource. The instructor has been notified.");
1.336 albertel 2003: }
2004: }
2005: push(@Apache::lonxml::error_messages,"<b>$errormsg</b> <br />");
1.52 albertel 2006: }
1.22 albertel 2007: }
1.49 albertel 2008:
1.22 albertel 2009: sub warning {
1.295 albertel 2010: $warningcount++;
1.261 albertel 2011:
1.372 albertel 2012: if ($env{'form.grade_target'} ne 'tex') {
1.348 albertel 2013: if ( &show_error_warn_msg() ) {
1.309 albertel 2014: push(@Apache::lonxml::warning_messages,
1.484 bisitz 2015: $Apache::lonxml::warnings_error_header
2016: .'<div class="LC_warning">'
2017: .&mt('[_1]W[_2]ARNING','<b>','</b>')."<b>:</b> ".join('<br />',@_)
2018: ."</div>\n"
1.482 bisitz 2019: );
1.295 albertel 2020: $Apache::lonxml::warnings_error_header='';
2021: }
2022: }
1.309 albertel 2023: }
2024:
2025: sub info {
1.372 albertel 2026: if ($env{'form.grade_target'} ne 'tex'
2027: && $env{'request.state'} eq 'construct') {
1.309 albertel 2028: push(@Apache::lonxml::info_messages,join('<br />',@_)."<br />\n");
2029: }
2030: }
2031:
2032: sub message_location {
2033: return '__LONCAPA_INTERNAL_MESSAGE_LOCATION__';
2034: }
2035:
2036: sub add_messages {
2037: my ($msg)=@_;
2038: my $result=join(' ',
2039: @Apache::lonxml::info_messages,
2040: @Apache::lonxml::error_messages,
2041: @Apache::lonxml::warning_messages);
2042: undef(@Apache::lonxml::info_messages);
2043: undef(@Apache::lonxml::error_messages);
2044: undef(@Apache::lonxml::warning_messages);
2045: $$msg=~s/__LONCAPA_INTERNAL_MESSAGE_LOCATION__/$result/;
2046: $$msg=~s/__LONCAPA_INTERNAL_MESSAGE_LOCATION__//g;
1.83 albertel 2047: }
2048:
2049: sub get_param {
1.213 albertel 2050: my ($param,$parstack,$safeeval,$context,$case_insensitive) = @_;
2051: if ( ! $context ) { $context = -1; }
2052: my $args ='';
2053: if ( $#$parstack > (-2-$context) ) { $args=$$parstack[$context]; }
1.297 sakharuk 2054: if ( ! $Apache::lonxml::usestyle ) {
2055: $args=$Apache::lonxml::style_values.$args;
2056: }
1.213 albertel 2057: if ( ! $args ) { return undef; }
2058: if ( $case_insensitive ) {
1.417 albertel 2059: if ($args =~ s/(my (?:.*))(\$\Q$param\E[,\)])/$1.lc($2)/ei) {
1.213 albertel 2060: return &Apache::run::run("{$args;".'return $'.$param.'}',
2061: $safeeval); #'
2062: } else {
2063: return undef;
2064: }
2065: } else {
1.417 albertel 2066: if ( $args =~ /my .*\$\Q$param\E[,\)]/ ) {
1.213 albertel 2067: return &Apache::run::run("{$args;".'return $'.$param.'}',
2068: $safeeval); #'
2069: } else {
2070: return undef;
2071: }
2072: }
1.22 albertel 2073: }
2074:
1.132 albertel 2075: sub get_param_var {
1.213 albertel 2076: my ($param,$parstack,$safeeval,$context,$case_insensitive) = @_;
1.132 albertel 2077: if ( ! $context ) { $context = -1; }
2078: my $args ='';
2079: if ( $#$parstack > (-2-$context) ) { $args=$$parstack[$context]; }
1.297 sakharuk 2080: if ( ! $Apache::lonxml::usestyle ) {
2081: $args=$Apache::lonxml::style_values.$args;
2082: }
1.230 albertel 2083: &Apache::lonxml::debug("Args are $args param is $param");
1.213 albertel 2084: if ($case_insensitive) {
1.419 albertel 2085: if (! ($args=~s/(my (?:.*))(\$\Q$param\E[,\)])/$1.lc($2)/ei)) {
1.213 albertel 2086: return undef;
2087: }
1.419 albertel 2088: } elsif ( $args !~ /my .*\$\Q$param\E[,\)]/ ) { return undef; }
1.132 albertel 2089: my $value=&Apache::run::run("{$args;".'return $'.$param.'}',$safeeval); #'
1.230 albertel 2090: &Apache::lonxml::debug("first run is $value");
1.341 albertel 2091: if ($value =~ /^[\$\@\%][a-zA-Z_]\w*$/) {
1.230 albertel 2092: &Apache::lonxml::debug("doing second");
2093: my @result=&Apache::run::run("return $value",$safeeval,1);
2094: if (!defined($result[0])) {
2095: return $value
2096: } else {
2097: if (wantarray) { return @result; } else { return $result[0]; }
2098: }
1.132 albertel 2099: } else {
2100: return $value;
2101: }
2102: }
2103:
1.438 albertel 2104: sub register_insert_xml {
2105: my $parser = HTML::LCParser->new($Apache::lonnet::perlvar{'lonTabDir'}
2106: .'/insertlist.xml');
2107: my ($tagnum,$in_help)=(0,0);
1.442 albertel 2108: my @alltags;
1.438 albertel 2109: my $tag;
2110: while (my $token = $parser->get_token()) {
2111: if ($token->[0] eq 'S') {
2112: my $key;
2113: if ($token->[1] eq 'tag') {
2114: $tag = $token->[2]{'name'};
2115: $insertlist{"$tagnum.tag"} = $tag;
2116: $insertlist{"$tag.num"} = $tagnum;
1.442 albertel 2117: push(@alltags,$tag);
1.438 albertel 2118: } elsif ($in_help && $token->[1] eq 'file') {
2119: $key = $tag.'.helpfile';
2120: } elsif ($in_help && $token->[1] eq 'description') {
2121: $key = $tag.'.helpdesc';
2122: } elsif ($token->[1] eq 'description' ||
2123: $token->[1] eq 'color' ||
2124: $token->[1] eq 'show' ) {
2125: $key = $tag.'.'.$token->[1];
2126: } elsif ($token->[1] eq 'insert_sub') {
2127: $key = $tag.'.function';
2128: } elsif ($token->[1] eq 'help') {
2129: $in_help=1;
2130: } elsif ($token->[1] eq 'allow') {
1.442 albertel 2131: $key = $tag.'.allow';
1.438 albertel 2132: }
2133: if (defined($key)) {
2134: $insertlist{$key} = $parser->get_text();
2135: $insertlist{$key} =~ s/(^\s*|\s*$ )//gx;
2136: }
2137: } elsif ($token->[0] eq 'E') {
2138: if ($token->[1] eq 'tag') {
2139: undef($tag);
2140: $tagnum++;
2141: } elsif ($token->[1] eq 'help') {
2142: undef($in_help);
2143: }
2144: }
2145: }
1.442 albertel 2146:
2147: # parse the allows and ignore tags set to <show>no</show>
2148: foreach my $tag (@alltags) {
1.445 albertel 2149: next if (!exists($insertlist{"$tag.allow"}));
1.442 albertel 2150: my $allow = $insertlist{"$tag.allow"};
2151: foreach my $element (split(',',$allow)) {
2152: $element =~ s/(^\s*|\s*$ )//gx;
1.446 albertel 2153: if (!exists($insertlist{"$element.show"})
2154: || $insertlist{"$element.show"} ne 'no') {
1.442 albertel 2155: push(@{ $insertlist{$tag.'.which'} },$element);
2156: }
2157: }
2158: }
1.438 albertel 2159: }
2160:
2161: sub register_insert {
2162: return ®ister_insert_xml(@_);
2163: # &dump_insertlist('2');
2164: }
2165:
2166: sub dump_insertlist {
2167: my ($ext) = @_;
2168: open(XML,">/tmp/insertlist.xml.$ext");
2169: print XML ("<insertlist>");
2170: my $i=0;
2171:
2172: while (exists($insertlist{"$i.tag"})) {
2173: my $tag = $insertlist{"$i.tag"};
2174: print XML ("
2175: \t<tag name=\"$tag\">");
2176: if (defined($insertlist{"$tag.description"})) {
2177: print XML ("
2178: \t\t<description>".$insertlist{"$tag.description"}."</description>");
2179: }
2180: if (defined($insertlist{"$tag.color"})) {
2181: print XML ("
2182: \t\t<color>".$insertlist{"$tag.color"}."</color>");
2183: }
2184: if (defined($insertlist{"$tag.function"})) {
2185: print XML ("
2186: \t\t<insert_sub>".$insertlist{"$tag.function"}."</insert_sub>");
2187: }
2188: if (defined($insertlist{"$tag.show"})
2189: && $insertlist{"$tag.show"} ne 'yes') {
2190: print XML ("
2191: \t\t<show>".$insertlist{"$tag.show"}."</show>");
2192: }
2193: if (defined($insertlist{"$tag.helpfile"})) {
2194: print XML ("
2195: \t\t<help>
2196: \t\t\t<file>".$insertlist{"$tag.helpfile"}."</file>");
2197: if ($insertlist{"$tag.helpdesc"} ne '') {
2198: print XML ("
2199: \t\t\t<description>".$insertlist{"$tag.helpdesc"}."</description>");
2200: }
2201: print XML ("
2202: \t\t</help>");
2203: }
2204: if (defined($insertlist{"$tag.which"})) {
2205: print XML ("
2206: \t\t<allow>".join(',',sort(@{ $insertlist{"$tag.which"} }))."</allow>");
2207: }
2208: print XML ("
2209: \t</tag>");
2210: $i++;
2211: }
2212: print XML ("\n</insertlist>\n");
2213: close(XML);
2214: }
2215:
1.98 albertel 2216: sub description {
1.437 albertel 2217: my ($token)=@_;
2218: my $tag = &get_tag($token);
2219: return $insertlist{$tag.'.description'};
1.268 bowersj2 2220: }
2221:
2222: # Returns a list containing the help file, and the description
2223: sub helpinfo {
1.437 albertel 2224: my ($token)=@_;
2225: my $tag = &get_tag($token);
2226: return ($insertlist{$tag.'.helpfile'}, $insertlist{$tag.'.helpdesc'});
2227: }
2228:
2229: sub get_tag {
2230: my ($token)=@_;
2231: my $tagnum;
2232: my $tag=$token->[1];
2233: foreach my $namespace (reverse(@Apache::lonxml::namespace)) {
2234: my $testtag = $namespace.'::'.$tag;
2235: $tagnum = $insertlist{"$testtag.num"};
2236: last if (defined($tagnum));
2237: }
2238: if (!defined($tagnum)) {
2239: $tagnum = $Apache::lonxml::insertlist{"$tag.num"};
2240: }
2241: return $insertlist{"$tagnum.tag"};
1.98 albertel 2242: }
1.123 albertel 2243:
1.485 onken 2244: ############################################################
2245: # PDF-FORM-METHODS
2246:
2247: =pod
2248:
2249: =item &print_pdf_radiobutton(fieldname, value, text)
2250:
2251: Returns a latexline to generate a PDF-Form-Radiobutton with Text.
2252:
2253: $fieldname: PDF internalname of the radiobutton
2254: $value: Value of radiobutton (read when dumping the PDF data)
2255: $text: Text on the rightside of the radiobutton
2256:
2257: =cut
2258: sub print_pdf_radiobutton {
2259: my $result = '';
2260: my ($fieldName, $value, $text) = @_;
2261: $result .= '\begin{tabularx}{\textwidth}{p{0cm}X}'."\n";
2262: $result .= '\radioButton[\symbolchoice{circle}]{'.
2263: $fieldName.'}{10bp}{10bp}{'.$value.'}&'.$text."\n";
2264: $result .= '\end{tabularx}' . "\n";
2265: $result .= '\hspace{2mm}' . "\n";
2266: return $result;
2267: }
2268:
2269:
2270: =pod
2271:
2272: =item &print_pdf_start_combobox(fieldname)
2273:
2274: Starts a latexline to generate a PDF-Form-Combobox with text.
2275:
2276: $fieldname: PDF internal name of the Combobox
2277:
2278: =cut
2279: sub print_pdf_start_combobox {
2280: my $result;
2281: my ($fieldName) = @_;
2282: $result .= '\begin{tabularx}{\textwidth}{p{2.5cm}X}'."\n";
2283: $result .= '\comboBox[]{'.$fieldName.'}{2.3cm}{14bp}{'; #
2284:
2285: return $result;
2286: }
2287:
2288:
2289: =pod
2290:
2291: =item &print_pdf_add_combobox_option(options)
2292:
2293: Generates a latexline to add Options to a PDF-Form-ComboBox.
2294:
2295: $option: PDF internal name of the Combobox-Option
2296:
2297: =cut
2298: sub print_pdf_add_combobox_option {
2299:
2300: my $result;
2301: my ($option) = @_;
2302:
2303: $result .= '('.$option.')';
2304:
2305: return $result;
2306: }
2307:
2308:
2309: =pod
2310:
2311: =item &print_pdf_end_combobox(text) {
2312:
2313: Returns latexcode to end a PDF-Form-Combobox with text.
2314:
2315: =cut
2316: sub print_pdf_end_combobox {
2317: my $result;
2318: my ($text) = @_;
2319:
2320: $result .= '}&'.$text."\\\\\n";
2321: $result .= '\end{tabularx}' . "\n";
2322: $result .= '\hspace{2mm}' . "\n";
2323: return $result;
2324: }
2325:
2326:
2327: =pod
2328:
2329: =item &print_pdf_hiddenField(fieldname, user, domain)
2330:
2331: Returns a latexline to generate a PDF-Form-hiddenField with userdata.
2332:
2333: $fieldname label for hiddentextfield
2334: $user: name of user
2335: $domain: domain of user
2336:
2337: =cut
2338: sub print_pdf_hiddenfield {
2339: my $result;
2340: my ($fieldname, $user, $domain) = @_;
2341:
2342: $result .= '\textField [\F{\FHidden}\F{-\FPrint}\V{'.$domain.'&'.$user.'}]{'.$fieldname.'}{0in}{0in}'."\n";
2343:
2344: return $result;
2345: }
2346:
1.1 sakharuk 2347: 1;
2348: __END__
1.68 www 2349:
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