Annotation of loncom/xml/lonxml.pm, revision 1.504
1.2 sakharuk 1: # The LearningOnline Network with CAPA
1.3 sakharuk 2: # XML Parser Module
1.2 sakharuk 3: #
1.504 ! bisitz 4: # $Id: lonxml.pm,v 1.503 2009/11/30 23:22:47 raeburn 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;
1.501 raeburn 114: use Apache::lonhtmlcommon();
1.79 www 115:
1.462 foxr 116: #==================================== Main subroutine: xmlparse
117:
1.72 albertel 118: #debugging control, to turn on debugging modify the correct handler
1.462 foxr 119:
1.72 albertel 120: $Apache::lonxml::debug=0;
1.206 albertel 121:
122: # keeps count of the number of warnings and errors generated in a parse
123: $warningcount=0;
124: $errorcount=0;
1.72 albertel 125:
126: #path to the directory containing the file currently being processed
127: @pwd=();
128:
129: #these two are used for capturing a subset of the output for later processing,
130: #don't touch them directly use &startredirection and &endredirection
131: @outputstack = ();
132: $redirection = 0;
133:
134: #controls wheter the <import> tag actually does
135: $import = 1;
136: @extlinks=();
137:
138: # meta mode is a bit weird only some output is to be turned off
139: #<output> tag turns metamode off (defined in londefdef.pm)
140: $metamode = 0;
141:
142: # turns on and of run::evaluate actually derefencing var refs
143: $evaluate = 1;
1.7 albertel 144:
1.74 albertel 145: # data structure for eidt mode, determines what tags can go into what other tags
146: %insertlist=();
1.68 www 147:
1.99 albertel 148: # stores the list of active tag namespaces
1.76 albertel 149: @namespace=();
150:
1.448 albertel 151: # stores all Scrit Vars displays for later showing
152: my @script_var_displays=();
153:
1.172 albertel 154: # a pointer the the Apache request object
155: $Apache::lonxml::request='';
156:
1.216 sakharuk 157: # a problem number counter, and check on ether it is used
1.237 sakharuk 158: $Apache::lonxml::counter=1;
1.204 albertel 159: $Apache::lonxml::counter_changed=0;
160:
1.462 foxr 161: # Part counter hash. In analysis mode, the
162: # problems can use this to record which parts increment the counter
163: # by how much. The counter subs will maintain this hash via
164: # their optional part parameters. Note that the assumption is that
165: # analysis is done in one request and therefore it is not necessary to
166: # save this information request-to-request.
167:
168:
169: %Apache::lonxml::counters_per_part = ();
170:
1.212 albertel 171: #internal check on whether to look at style defs
172: $Apache::lonxml::usestyle=1;
1.260 albertel 173:
174: #locations used to store the parameter string for style substitutions
175: $Apache::lonxml::style_values='';
176: $Apache::lonxml::style_end_values='';
1.212 albertel 177:
1.281 albertel 178: #array of ssi calls that need to occur after we are done parsing
179: @Apache::lonxml::ssi_info=();
180:
1.282 albertel 181: #should we do the postag variable interpolation
182: $Apache::lonxml::post_evaluate=1;
183:
1.295 albertel 184: #a header message to emit in the case of any generated warning or errors
185: $Apache::lonxml::warnings_error_header='';
186:
1.396 foxr 187: # Control whether or not LaTeX symbols should be substituted for their
188: # \ style equivalents...this may be turned off e.g. in an verbatim
189: # environment.
190:
191: $Apache::lonxml::substitute_LaTeX_symbols = 1; # Starts out on.
192:
193: sub enable_LaTeX_substitutions {
194: $Apache::lonxml::substitute_LaTeX_symbols = 1;
195: }
196: sub disable_LaTeX_substitutions {
197: $Apache::lonxml::substitute_LaTeX_symbols = 0;
198: }
199:
1.68 www 200: sub xmlend {
1.335 sakharuk 201: my ($target,$parser)=@_;
1.278 www 202: my $mode='xml';
203: my $status='OPEN';
1.368 albertel 204: if ($Apache::lonhomework::parsing_a_problem ||
205: $Apache::lonhomework::parsing_a_task ) {
1.278 www 206: $mode='problem';
207: $status=$Apache::inputtags::status[-1];
208: }
1.362 matthew 209: my $discussion;
1.379 albertel 210: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
211: ['LONCAPA_INTERNAL_no_discussion']);
1.372 albertel 212: if (! exists($env{'form.LONCAPA_INTERNAL_no_discussion'}) ||
213: $env{'form.LONCAPA_INTERNAL_no_discussion'} ne 'true') {
1.362 matthew 214: $discussion=&Apache::lonfeedback::list_discussion($mode,$status);
215: }
1.334 sakharuk 216: if ($target eq 'tex') {
1.335 sakharuk 217: $discussion.='<tex>\keephidden{ENDOFPROBLEM}\vskip 0.5mm\noindent\makebox[\textwidth/$number_of_columns][b]{\hrulefill}\end{document}</tex>';
1.334 sakharuk 218: &Apache::lonxml::newparser($parser,\$discussion,'');
219: return '';
220: }
1.405 albertel 221:
1.407 albertel 222: return $discussion;
1.119 www 223: }
224:
225: sub tokeninputfield {
1.120 www 226: my $defhost=$Apache::lonnet::perlvar{'lonHostID'};
227: $defhost=~tr/a-z/A-Z/;
1.119 www 228: return (<<ENDINPUTFIELD)
1.226 albertel 229: <script type="text/javascript">
1.120 www 230: function updatetoken() {
231: var comp=new Array;
232: var barcode=unescape(document.tokeninput.barcode.value);
233: comp=barcode.split('*');
234: if (typeof(comp[0])!="undefined") {
235: document.tokeninput.codeone.value=comp[0];
236: }
237: if (typeof(comp[1])!="undefined") {
238: document.tokeninput.codetwo.value=comp[1];
239: }
240: if (typeof(comp[2])!="undefined") {
241: comp[2]=comp[2].toUpperCase();
242: document.tokeninput.codethree.value=comp[2];
243: }
244: document.tokeninput.barcode.value='';
245: }
246: </script>
247: <form method="post" name="tokeninput">
1.119 www 248: <table border="2" bgcolor="#FFFFBB">
249: <tr><th>DocID Checkin</th></tr>
250: <tr><td>
251: <table>
252: <tr>
253: <td>Scan in Barcode</td>
1.120 www 254: <td><input type="text" size="22" name="barcode"
255: onChange="updatetoken()"/></td>
1.119 www 256: </tr>
257: <tr><td><i>or</i> Type in DocID</td>
258: <td>
259: <input type="text" size="5" name="codeone" />
1.120 www 260: <b><font size="+2">*</font></b>
1.119 www 261: <input type="text" size="5" name="codetwo" />
1.120 www 262: <b><font size="+2">*</font></b>
263: <input type="text" size="10" name="codethree" value="$defhost"
264: onChange="this.value=this.value.toUpperCase()" />
1.119 www 265: </td></tr>
266: </table>
267: </td></tr>
268: <tr><td><input type="submit" value="Check in DocID" /></td></tr>
269: </table>
270: </form>
271: ENDINPUTFIELD
1.112 www 272: }
273:
1.116 www 274: sub maketoken {
1.118 www 275: my ($symb,$tuname,$tudom,$tcrsid)=@_;
1.112 www 276: unless ($symb) {
277: $symb=&Apache::lonnet::symbread();
278: }
279: unless ($tuname) {
1.372 albertel 280: $tuname=$env{'user.name'};
281: $tudom=$env{'user.domain'};
282: $tcrsid=$env{'request.course.id'};
1.112 www 283: }
1.116 www 284:
1.118 www 285: return &Apache::lonnet::checkout($symb,$tuname,$tudom,$tcrsid);
286: }
287:
288: sub printtokenheader {
1.133 albertel 289: my ($target,$token,$tsymb,$tcrsid,$tudom,$tuname)=@_;
1.116 www 290: unless ($token) { return ''; }
1.118 www 291:
1.423 albertel 292: my ($symb,$courseid,$domain,$name) = &Apache::lonnet::whichuser();
1.133 albertel 293: unless ($tsymb) {
294: $tsymb=$symb;
1.118 www 295: }
296: unless ($tuname) {
1.133 albertel 297: $tuname=$name;
298: $tudom=$domain;
299: $tcrsid=$courseid;
1.118 www 300: }
1.114 www 301:
1.390 albertel 302: my $plainname=&Apache::loncommon::plainname($tuname,$tudom);
1.114 www 303:
1.112 www 304: if ($target eq 'web') {
1.145 www 305: my %idhash=&Apache::lonnet::idrget($tudom,($tuname));
1.115 www 306: return
1.221 albertel 307: '<img align="right" src="/cgi-bin/barcode.png?encode='.$token.'" />'.
1.284 www 308: &mt('Checked out for').' '.$plainname.
309: '<br />'.&mt('User').': '.$tuname.' at '.$tudom.
310: '<br />'.&mt('ID').': '.$idhash{$tuname}.
311: '<br />'.&mt('CourseID').': '.$tcrsid.
1.372 albertel 312: '<br />'.&mt('Course').': '.$env{'course.'.$tcrsid.'.description'}.
1.284 www 313: '<br />'.&mt('DocID').': '.$token.
314: '<br />'.&mt('Time').': '.&Apache::lonlocal::locallocaltime().'<hr />';
1.112 www 315: } else {
1.121 albertel 316: return $token;
1.112 www 317: }
1.68 www 318: }
319:
1.48 albertel 320: sub printalltags {
321: my $temp;
322: foreach $temp (sort keys %Apache::lonxml::alltags) {
1.141 albertel 323: &Apache::lonxml::debug("$temp -- ".
324: join(',',@{ $Apache::lonxml::alltags{$temp} }));
1.48 albertel 325: }
326: }
1.31 sakharuk 327:
1.3 sakharuk 328: sub xmlparse {
1.172 albertel 329: my ($request,$target,$content_file_string,$safeinit,%style_for_target) = @_;
1.96 albertel 330:
1.172 albertel 331: &setup_globals($request,$target);
1.232 albertel 332: &Apache::inputtags::initialize_inputtags();
1.370 albertel 333: &Apache::bridgetask::initialize_bridgetask();
1.232 albertel 334: &Apache::outputtags::initialize_outputtags();
335: &Apache::edit::initialize_edit();
1.287 albertel 336: &Apache::londefdef::initialize_londefdef();
1.244 albertel 337:
1.178 www 338: #
339: # do we have a course style file?
340: #
341:
1.372 albertel 342: if ($env{'request.course.id'} && $env{'request.state'} ne 'construct') {
1.178 www 343: my $bodytext=
1.372 albertel 344: $env{'course.'.$env{'request.course.id'}.'.default_xml_style'};
1.178 www 345: if ($bodytext) {
1.337 albertel 346: foreach my $file (split(',',$bodytext)) {
347: my $location=&Apache::lonnet::filelocation('',$file);
348: my $styletext=&Apache::lonnet::getfile($location);
349: if ($styletext ne '-1') {
350: %style_for_target = (%style_for_target,
351: &Apache::style::styleparser($target,$styletext));
352: }
353: }
354: }
1.449 albertel 355: } elsif ($env{'construct.style'}
356: && ($env{'request.state'} eq 'construct')) {
1.372 albertel 357: my $location=&Apache::lonnet::filelocation('',$env{'construct.style'});
1.291 sakharuk 358: my $styletext=&Apache::lonnet::getfile($location);
1.449 albertel 359: if ($styletext ne '-1') {
360: %style_for_target = (%style_for_target,
361: &Apache::style::styleparser($target,$styletext));
362: }
1.178 www 363: }
1.255 sakharuk 364: #&printalltags();
1.16 albertel 365: my @pars = ();
1.372 albertel 366: my $pwd=$env{'request.filename'};
1.23 albertel 367: $pwd =~ s:/[^/]*$::;
368: &newparser(\@pars,\$content_file_string,$pwd);
1.24 sakharuk 369:
1.3 sakharuk 370: my $safeeval = new Safe;
1.40 albertel 371: my $safehole = new Safe::Hole;
1.82 ng 372: &init_safespace($target,$safeeval,$safehole,$safeinit);
1.3 sakharuk 373: #-------------------- Redefinition of the target in the case of compound target
374:
375: ($target, my @tenta) = split('&&',$target);
376:
1.150 albertel 377: my @stack = ();
1.3 sakharuk 378: my @parstack = ();
1.358 albertel 379: &initdepth();
380: &init_alarm();
1.101 albertel 381: my $finaloutput = &inner_xmlparse($target,\@stack,\@parstack,\@pars,
1.394 albertel 382: $safeeval,\%style_for_target,1);
1.255 sakharuk 383:
1.425 albertel 384: if (@stack) {
1.482 bisitz 385: &warning(&mt('At end of file some tags were still left unclosed:').
386: ' <tt><'.join('></tt>, <tt><',reverse(@stack)).
1.425 albertel 387: '></tt>');
388: }
1.372 albertel 389: if ($env{'request.uri'}) {
390: &writeallows($env{'request.uri'});
1.125 www 391: }
1.281 albertel 392: &do_registered_ssi();
1.204 albertel 393: if ($Apache::lonxml::counter_changed) { &store_counter() }
1.393 albertel 394:
395: &clean_safespace($safeeval);
396:
1.448 albertel 397: if (@script_var_displays) {
398: $finaloutput .= join('',@script_var_displays);
399: undef(@script_var_displays);
400: }
1.469 albertel 401: &init_state();
1.372 albertel 402: if ($env{'form.return_only_error_and_warning_counts'}) {
1.473 www 403: if ($env{'request.filename'}=~/\.(html|htm|xml)$/i) {
404: my $error=&verify_html($content_file_string);
405: if ($error) { $errorcount++; }
406: }
1.361 www 407: return "$errorcount:$warningcount";
408: }
1.3 sakharuk 409: return $finaloutput;
1.106 www 410: }
411:
1.191 albertel 412: sub latex_special_symbols {
1.272 albertel 413: my ($string,$where)=@_;
1.396 foxr 414: #
415: # If e.g. in verbatim mode, then don't substitute.
416: # but return original string.
417: #
418: if (!($Apache::lonxml::substitute_LaTeX_symbols)) {
419: return $string;
420: }
1.235 sakharuk 421: if ($where eq 'header') {
1.414 foxr 422: $string =~ s/\\/\$\\backslash\$/g; # \ -> $\backslash$ per LaTex line by line pg 10.
1.311 albertel 423: $string =~ s/(\$|%|\{|\})/\\$1/g;
424: $string=&Apache::lonprintout::character_chart($string);
425: # any & or # leftover should be safe to just escape
426: $string=~s/([^\\])\&/$1\\\&/g;
427: $string=~s/([^\\])\#/$1\\\#/g;
1.415 foxr 428: $string =~ s/_/\\_/g; # _ -> \_
429: $string =~ s/\^/\\\^{}/g; # ^ -> \^{}
1.229 sakharuk 430: } else {
1.312 albertel 431: $string=~s/\\/\\ensuremath{\\backslash}/g;
1.367 albertel 432: $string=~s/\\\%|\%/\\\%/g;
433: $string=~s/\\{|{/\\{/g;
434: $string=~s/\\}|}/\\}/g;
1.378 albertel 435: $string=~s/\\ensuremath\\{\\backslash\\}/\\ensuremath{\\backslash}/g;
1.367 albertel 436: $string=~s/\\\$|\$/\\\$/g;
437: $string=~s/\\\_|\_/\\\_/g;
1.313 albertel 438: $string=~s/([^\\]|^)(\~|\^)/$1\\$2\\strut /g;
1.310 sakharuk 439: $string=~s/(>|<)/\\ensuremath\{$1\}/g; #more or less
1.311 albertel 440: $string=&Apache::lonprintout::character_chart($string);
441: # any & or # leftover should be safe to just escape
1.367 albertel 442: $string=~s/\\\&|\&/\\\&/g;
443: $string=~s/\\\#|\#/\\\#/g;
1.332 sakharuk 444: $string=~s/\|/\$\\mid\$/g;
1.310 sakharuk 445: #single { or } How to escape?
1.229 sakharuk 446: }
1.272 albertel 447: return $string;
1.188 sakharuk 448: }
449:
1.101 albertel 450: sub inner_xmlparse {
1.394 albertel 451: my ($target,$stack,$parstack,$pars,$safeeval,$style_for_target,$start)=@_;
1.101 albertel 452: my $finaloutput = '';
453: my $result;
454: my $token;
1.258 albertel 455: my $dontpop=0;
1.389 albertel 456: my $startredirection = $Apache::lonxml::redirection;
1.101 albertel 457: while ( $#$pars > -1 ) {
458: while ($token = $$pars['-1']->get_token) {
1.261 albertel 459: if (($token->[0] eq 'T') || ($token->[0] eq 'C') ) {
1.101 albertel 460: if ($metamode<1) {
1.190 albertel 461: my $text=$token->[1];
1.193 albertel 462: if ($token->[0] eq 'C' && $target eq 'tex') {
1.239 sakharuk 463: $text = '';
464: # $text = '%'.$text."\n";
1.182 sakharuk 465: }
1.190 albertel 466: $result.=$text;
1.101 albertel 467: }
1.261 albertel 468: } elsif (($token->[0] eq 'D')) {
469: if ($metamode<1 && $target eq 'web') {
470: my $text=$token->[1];
471: $result.=$text;
472: }
1.101 albertel 473: } elsif ($token->[0] eq 'PI') {
1.261 albertel 474: if ($metamode<1 && $target eq 'web') {
1.101 albertel 475: $result=$token->[2];
476: }
477: } elsif ($token->[0] eq 'S') {
1.140 albertel 478: # add tag to stack
1.101 albertel 479: push (@$stack,$token->[1]);
480: # add parameters list to another stack
481: push (@$parstack,&parstring($token));
1.140 albertel 482: &increasedepth($token);
1.212 albertel 483: if ($Apache::lonxml::usestyle &&
484: exists($$style_for_target{$token->[1]})) {
485: $Apache::lonxml::usestyle=0;
486: my $string=$$style_for_target{$token->[1]}.
487: '<LONCAPA_INTERNAL_TURN_STYLE_ON />';
488: &Apache::lonxml::newparser($pars,\$string);
1.257 albertel 489: $Apache::lonxml::style_values=$$parstack[-1];
1.259 albertel 490: $Apache::lonxml::style_end_values=$$parstack[-1];
1.101 albertel 491: } else {
492: $result = &callsub("start_$token->[1]", $target, $token, $stack,
493: $parstack, $pars, $safeeval, $style_for_target);
1.140 albertel 494: }
1.101 albertel 495: } elsif ($token->[0] eq 'E') {
1.212 albertel 496: if ($Apache::lonxml::usestyle &&
497: exists($$style_for_target{'/'."$token->[1]"})) {
498: $Apache::lonxml::usestyle=0;
499: my $string=$$style_for_target{'/'.$token->[1]}.
1.258 albertel 500: '<LONCAPA_INTERNAL_TURN_STYLE_ON end="'.$token->[1].'" />';
1.212 albertel 501: &Apache::lonxml::newparser($pars,\$string);
1.259 albertel 502: $Apache::lonxml::style_values=$Apache::lonxml::style_end_values;
503: $Apache::lonxml::style_end_values='';
1.258 albertel 504: $dontpop=1;
1.101 albertel 505: } else {
1.258 albertel 506: #clear out any tags that didn't end
507: while ($token->[1] ne $$stack['-1'] && ($#$stack > -1)) {
508: my $lasttag=$$stack[-1];
1.317 albertel 509: if ($token->[1] =~ /^\Q$lasttag\E$/i) {
1.483 bisitz 510: &Apache::lonxml::warning(&mt('Using tag [_1] on line [_2] as end tag to [_3]','</'.$token->[1].'>','.$token->[3].','<'.$$stack[-1].'>'));
1.258 albertel 511: last;
512: } else {
1.483 bisitz 513: &Apache::lonxml::warning(&mt('Found tag [_1] on line [_2] when looking for [_3] in file.','</'.$token->[1].'>',$token->[3],'</'.$$stack[-1].'>'));
1.258 albertel 514: &end_tag($stack,$parstack,$token);
515: }
516: }
517: $result = &callsub("end_$token->[1]", $target, $token, $stack,
518: $parstack, $pars,$safeeval, $style_for_target);
1.101 albertel 519: }
520: } else {
521: &Apache::lonxml::error("Unknown token event :$token->[0]:$token->[1]:");
522: }
523: #evaluate variable refs in result
1.282 albertel 524: if ($Apache::lonxml::post_evaluate &&$result ne "") {
1.257 albertel 525: my $extras;
526: if (!$Apache::lonxml::usestyle) {
527: $extras=$Apache::lonxml::style_values;
528: }
1.488 raeburn 529: if ( $#$parstack > -1 ) {
530: $result=&Apache::run::evaluate($result,$safeeval,$extras.$$parstack[-1]);
531: } else {
532: $result= &Apache::run::evaluate($result,$safeeval,$extras);
1.487 raeburn 533: }
1.163 albertel 534: }
1.282 albertel 535: $Apache::lonxml::post_evaluate=1;
536:
1.190 albertel 537: if (($token->[0] eq 'T') || ($token->[0] eq 'C') || ($token->[0] eq 'D') ) {
1.249 albertel 538: #Style file definitions should be correct
1.250 albertel 539: if ($target eq 'tex' && ($Apache::lonxml::usestyle)) {
1.311 albertel 540: $result=&latex_special_symbols($result);
1.249 albertel 541: }
1.190 albertel 542: }
543:
1.169 albertel 544: if ($Apache::lonxml::redirection) {
545: $Apache::lonxml::outputstack['-1'] .= $result;
546: } else {
547: $finaloutput.=$result;
548: }
549: $result = '';
550:
1.258 albertel 551: if ($token->[0] eq 'E' && !$dontpop) {
1.101 albertel 552: &end_tag($stack,$parstack,$token);
553: }
1.258 albertel 554: $dontpop=0;
1.224 albertel 555: }
1.212 albertel 556: if ($#$pars > -1) {
557: pop @$pars;
558: pop @Apache::lonxml::pwd;
559: }
1.101 albertel 560: }
561:
562: # if ($target eq 'meta') {
563: # $finaloutput.=&endredirection;
564: # }
565:
1.394 albertel 566: if ( $start && $target eq 'grade') { &endredirection(); }
1.389 albertel 567: if ( $Apache::lonxml::redirection > $startredirection) {
568: while ($Apache::lonxml::redirection > $startredirection) {
569: $finaloutput .= &endredirection();
1.387 albertel 570: }
571: }
1.101 albertel 572: if (($ENV{'QUERY_STRING'}) && ($target eq 'web')) {
573: $finaloutput=&afterburn($finaloutput);
1.216 sakharuk 574: }
1.101 albertel 575: return $finaloutput;
576: }
1.67 www 577:
1.318 matthew 578: ##
579: ## Looks to see if there is a subroutine defined for this tag. If so, call it,
580: ## otherwise do not call it as we do not know what it is.
581: ##
1.7 albertel 582: sub callsub {
1.84 albertel 583: my ($sub,$target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.7 albertel 584: my $currentstring='';
1.72 albertel 585: my $nodefault;
1.7 albertel 586: {
1.59 albertel 587: my $sub1;
1.7 albertel 588: no strict 'refs';
1.68 www 589: my $tag=$token->[1];
1.236 www 590: # get utterly rid of extended html tags
591: if ($tag=~/^x\-/i) { return ''; }
1.141 albertel 592: my $space=$Apache::lonxml::alltags{$tag}[-1];
1.68 www 593: if (!$space) {
1.141 albertel 594: $tag=~tr/A-Z/a-z/;
1.68 www 595: $sub=~tr/A-Z/a-z/;
1.141 albertel 596: $space=$Apache::lonxml::alltags{$tag}[-1]
1.68 www 597: }
1.97 albertel 598:
599: my $deleted=0;
600: if (($token->[0] eq 'S') && ($target eq 'modified')) {
601: $deleted=&Apache::edit::handle_delete($space,$target,$token,$tagstack,
602: $parstack,$parser,$safeeval,
603: $style);
604: }
605: if (!$deleted) {
606: if ($space) {
1.220 albertel 607: #&Apache::lonxml::debug("Calling sub $sub in $space $metamode");
1.97 albertel 608: $sub1="$space\:\:$sub";
609: ($currentstring,$nodefault) = &$sub1($target,$token,$tagstack,
610: $parstack,$parser,$safeeval,
611: $style);
612: } else {
1.318 matthew 613: if ($target eq 'tex') {
614: # throw away tag name
615: return '';
616: }
1.220 albertel 617: #&Apache::lonxml::debug("NOT Calling sub $sub in $space $metamode");
1.97 albertel 618: if ($metamode <1) {
619: if (defined($token->[4]) && ($metamode < 1)) {
620: $currentstring = $token->[4];
621: } else {
622: $currentstring = $token->[2];
623: }
1.62 sakharuk 624: }
1.7 albertel 625: }
1.97 albertel 626: # &Apache::lonxml::debug("nodefalt:$nodefault:");
627: if ($currentstring eq '' && $nodefault eq '') {
628: if ($target eq 'edit') {
1.220 albertel 629: #&Apache::lonxml::debug("doing default edit for $token->[1]");
1.97 albertel 630: if ($token->[0] eq 'S') {
631: $currentstring = &Apache::edit::tag_start($target,$token);
632: } elsif ($token->[0] eq 'E') {
633: $currentstring = &Apache::edit::tag_end($target,$token);
634: }
1.441 albertel 635: }
636: }
637: if ($target eq 'modified' && $nodefault eq '') {
638: if ($currentstring eq '') {
639: if ($token->[0] eq 'S') {
640: $currentstring = $token->[4];
641: } elsif ($token->[0] eq 'E') {
642: $currentstring = $token->[2];
643: } else {
644: $currentstring = $token->[2];
645: }
646: }
1.97 albertel 647: if ($token->[0] eq 'S') {
1.447 albertel 648: $currentstring.=&Apache::edit::handle_insert();
1.210 www 649: } elsif ($token->[0] eq 'E') {
1.447 albertel 650: $currentstring.=&Apache::edit::handle_insertafter($token->[1]);
1.97 albertel 651: }
1.72 albertel 652: }
1.7 albertel 653: }
654: use strict 'refs';
655: }
656: return $currentstring;
1.82 ng 657: }
658:
1.465 albertel 659: {
660: my %state;
661:
662: sub init_state {
663: undef(%state);
664: }
665:
666: sub set_state {
667: my ($key,$value) = @_;
668: $state{$key} = $value;
669: return $value;
670: }
671: sub get_state {
672: my ($key) = @_;
673: return $state{$key};
674: }
675: }
676:
1.96 albertel 677: sub setup_globals {
1.172 albertel 678: my ($request,$target)=@_;
679: $Apache::lonxml::request=$request;
1.205 www 680: $errorcount=0;
681: $warningcount=0;
1.490 www 682: $Apache::lonxml::internal_error=0;
1.207 albertel 683: $Apache::lonxml::default_homework_loaded=0;
1.212 albertel 684: $Apache::lonxml::usestyle=1;
1.204 albertel 685: &init_counter();
1.462 foxr 686: &clear_bubble_lines_for_part();
1.465 albertel 687: &init_state();
1.469 albertel 688: &set_state('target',$target);
1.101 albertel 689: @Apache::lonxml::pwd=();
1.124 albertel 690: @Apache::lonxml::extlinks=();
1.448 albertel 691: @script_var_displays=();
1.281 albertel 692: @Apache::lonxml::ssi_info=();
1.282 albertel 693: $Apache::lonxml::post_evaluate=1;
1.295 albertel 694: $Apache::lonxml::warnings_error_header='';
1.397 albertel 695: $Apache::lonxml::substitute_LaTeX_symbols = 1;
1.96 albertel 696: if ($target eq 'meta') {
697: $Apache::lonxml::redirection = 0;
698: $Apache::lonxml::metamode = 1;
699: $Apache::lonxml::evaluate = 1;
700: $Apache::lonxml::import = 0;
1.129 albertel 701: } elsif ($target eq 'answer') {
702: $Apache::lonxml::redirection = 0;
703: $Apache::lonxml::metamode = 1;
704: $Apache::lonxml::evaluate = 1;
705: $Apache::lonxml::import = 1;
1.96 albertel 706: } elsif ($target eq 'grade') {
1.387 albertel 707: &startredirection(); #ended in inner_xmlparse on exit
1.96 albertel 708: $Apache::lonxml::metamode = 0;
709: $Apache::lonxml::evaluate = 1;
710: $Apache::lonxml::import = 1;
711: } elsif ($target eq 'modified') {
712: $Apache::lonxml::redirection = 0;
713: $Apache::lonxml::metamode = 0;
714: $Apache::lonxml::evaluate = 0;
715: $Apache::lonxml::import = 0;
716: } elsif ($target eq 'edit') {
717: $Apache::lonxml::redirection = 0;
718: $Apache::lonxml::metamode = 0;
719: $Apache::lonxml::evaluate = 0;
720: $Apache::lonxml::import = 0;
1.163 albertel 721: } elsif ($target eq 'analyze') {
722: $Apache::lonxml::redirection = 0;
723: $Apache::lonxml::metamode = 0;
724: $Apache::lonxml::evaluate = 1;
725: $Apache::lonxml::import = 1;
1.96 albertel 726: } else {
727: $Apache::lonxml::redirection = 0;
728: $Apache::lonxml::metamode = 0;
729: $Apache::lonxml::evaluate = 1;
730: $Apache::lonxml::import = 1;
731: }
732: }
733:
1.82 ng 734: sub init_safespace {
735: my ($target,$safeeval,$safehole,$safeinit) = @_;
1.393 albertel 736: $safeeval->deny_only(':dangerous');
737: $safeeval->reval('use Math::Complex;');
1.383 albertel 738: $safeeval->permit_only(":default");
1.82 ng 739: $safeeval->permit("entereval");
740: $safeeval->permit(":base_math");
741: $safeeval->permit("sort");
1.286 albertel 742: $safeeval->permit("time");
1.480 www 743: $safeeval->permit("caller");
1.371 albertel 744: $safeeval->deny("rand");
745: $safeeval->deny("srand");
1.82 ng 746: $safeeval->deny(":base_io");
1.102 albertel 747: $safehole->wrap(\&Apache::scripttag::xmlparse,$safeeval,'&xmlparse');
1.251 albertel 748: $safehole->wrap(\&Apache::outputtags::multipart,$safeeval,'&multipart');
1.82 ng 749: $safehole->wrap(\&Apache::lonnet::EXT,$safeeval,'&EXT');
1.324 albertel 750: $safehole->wrap(\&Apache::chemresponse::chem_standard_order,$safeeval,
751: '&chem_standard_order');
1.369 albertel 752: $safehole->wrap(\&Apache::response::check_status,$safeeval,'&check_status');
1.471 bisitz 753: $safehole->wrap(\&Apache::response::implicit_multiplication,$safeeval,'&implicit_multiplication');
1.324 albertel 754:
1.431 www 755: $safehole->wrap(\&Apache::lonmaxima::maxima_eval,$safeeval,'&maxima_eval');
1.432 www 756: $safehole->wrap(\&Apache::lonmaxima::maxima_check,$safeeval,'&maxima_check');
1.433 albertel 757: $safehole->wrap(\&Apache::lonmaxima::maxima_cas_formula_fix,$safeeval,
758: '&maxima_cas_formula_fix');
759:
1.494 www 760: $safehole->wrap(\&Apache::lonr::r_eval,$safeeval,'&r_eval');
1.497 www 761: $safehole->wrap(\&Apache::lonr::Rentry,$safeeval,'&Rentry');
762: $safehole->wrap(\&Apache::lonr::Rarray,$safeeval,'&Rarray');
1.494 www 763: $safehole->wrap(\&Apache::lonr::r_check,$safeeval,'&r_check');
764: $safehole->wrap(\&Apache::lonr::r_cas_formula_fix,$safeeval,
765: '&r_cas_formula_fix');
766:
1.433 albertel 767: $safehole->wrap(\&Apache::caparesponse::capa_formula_fix,$safeeval,
768: '&capa_formula_fix');
1.431 www 769:
1.480 www 770: $safehole->wrap(\&Apache::lonlocal::locallocaltime,$safeeval,
771: '&locallocaltime');
772:
1.82 ng 773: $safehole->wrap(\&Math::Cephes::asin,$safeeval,'&asin');
774: $safehole->wrap(\&Math::Cephes::acos,$safeeval,'&acos');
775: $safehole->wrap(\&Math::Cephes::atan,$safeeval,'&atan');
776: $safehole->wrap(\&Math::Cephes::sinh,$safeeval,'&sinh');
777: $safehole->wrap(\&Math::Cephes::cosh,$safeeval,'&cosh');
778: $safehole->wrap(\&Math::Cephes::tanh,$safeeval,'&tanh');
779: $safehole->wrap(\&Math::Cephes::asinh,$safeeval,'&asinh');
780: $safehole->wrap(\&Math::Cephes::acosh,$safeeval,'&acosh');
781: $safehole->wrap(\&Math::Cephes::atanh,$safeeval,'&atanh');
782: $safehole->wrap(\&Math::Cephes::erf,$safeeval,'&erf');
783: $safehole->wrap(\&Math::Cephes::erfc,$safeeval,'&erfc');
784: $safehole->wrap(\&Math::Cephes::j0,$safeeval,'&j0');
785: $safehole->wrap(\&Math::Cephes::j1,$safeeval,'&j1');
786: $safehole->wrap(\&Math::Cephes::jn,$safeeval,'&jn');
787: $safehole->wrap(\&Math::Cephes::jv,$safeeval,'&jv');
788: $safehole->wrap(\&Math::Cephes::y0,$safeeval,'&y0');
789: $safehole->wrap(\&Math::Cephes::y1,$safeeval,'&y1');
790: $safehole->wrap(\&Math::Cephes::yn,$safeeval,'&yn');
791: $safehole->wrap(\&Math::Cephes::yv,$safeeval,'&yv');
1.215 albertel 792:
793: $safehole->wrap(\&Math::Cephes::bdtr ,$safeeval,'&bdtr' );
794: $safehole->wrap(\&Math::Cephes::bdtrc ,$safeeval,'&bdtrc' );
795: $safehole->wrap(\&Math::Cephes::bdtri ,$safeeval,'&bdtri' );
796: $safehole->wrap(\&Math::Cephes::btdtr ,$safeeval,'&btdtr' );
797: $safehole->wrap(\&Math::Cephes::chdtr ,$safeeval,'&chdtr' );
798: $safehole->wrap(\&Math::Cephes::chdtrc,$safeeval,'&chdtrc');
799: $safehole->wrap(\&Math::Cephes::chdtri,$safeeval,'&chdtri');
800: $safehole->wrap(\&Math::Cephes::fdtr ,$safeeval,'&fdtr' );
801: $safehole->wrap(\&Math::Cephes::fdtrc ,$safeeval,'&fdtrc' );
802: $safehole->wrap(\&Math::Cephes::fdtri ,$safeeval,'&fdtri' );
803: $safehole->wrap(\&Math::Cephes::gdtr ,$safeeval,'&gdtr' );
804: $safehole->wrap(\&Math::Cephes::gdtrc ,$safeeval,'&gdtrc' );
805: $safehole->wrap(\&Math::Cephes::nbdtr ,$safeeval,'&nbdtr' );
806: $safehole->wrap(\&Math::Cephes::nbdtrc,$safeeval,'&nbdtrc');
807: $safehole->wrap(\&Math::Cephes::nbdtri,$safeeval,'&nbdtri');
808: $safehole->wrap(\&Math::Cephes::ndtr ,$safeeval,'&ndtr' );
809: $safehole->wrap(\&Math::Cephes::ndtri ,$safeeval,'&ndtri' );
810: $safehole->wrap(\&Math::Cephes::pdtr ,$safeeval,'&pdtr' );
811: $safehole->wrap(\&Math::Cephes::pdtrc ,$safeeval,'&pdtrc' );
812: $safehole->wrap(\&Math::Cephes::pdtri ,$safeeval,'&pdtri' );
813: $safehole->wrap(\&Math::Cephes::stdtr ,$safeeval,'&stdtr' );
814: $safehole->wrap(\&Math::Cephes::stdtri,$safeeval,'&stdtri');
815:
1.383 albertel 816: $safehole->wrap(\&Math::Cephes::Matrix::mat,$safeeval,'&mat');
817: $safehole->wrap(\&Math::Cephes::Matrix::new,$safeeval,
818: '&Math::Cephes::Matrix::new');
819: $safehole->wrap(\&Math::Cephes::Matrix::coef,$safeeval,
820: '&Math::Cephes::Matrix::coef');
821: $safehole->wrap(\&Math::Cephes::Matrix::clr,$safeeval,
822: '&Math::Cephes::Matrix::clr');
823: $safehole->wrap(\&Math::Cephes::Matrix::add,$safeeval,
824: '&Math::Cephes::Matrix::add');
825: $safehole->wrap(\&Math::Cephes::Matrix::sub,$safeeval,
826: '&Math::Cephes::Matrix::sub');
827: $safehole->wrap(\&Math::Cephes::Matrix::mul,$safeeval,
828: '&Math::Cephes::Matrix::mul');
829: $safehole->wrap(\&Math::Cephes::Matrix::div,$safeeval,
830: '&Math::Cephes::Matrix::div');
831: $safehole->wrap(\&Math::Cephes::Matrix::inv,$safeeval,
832: '&Math::Cephes::Matrix::inv');
833: $safehole->wrap(\&Math::Cephes::Matrix::transp,$safeeval,
834: '&Math::Cephes::Matrix::transp');
835: $safehole->wrap(\&Math::Cephes::Matrix::simq,$safeeval,
836: '&Math::Cephes::Matrix::simq');
837: $safehole->wrap(\&Math::Cephes::Matrix::mat_to_vec,$safeeval,
838: '&Math::Cephes::Matrix::mat_to_vec');
839: $safehole->wrap(\&Math::Cephes::Matrix::vec_to_mat,$safeeval,
840: '&Math::Cephes::Matrix::vec_to_mat');
841: $safehole->wrap(\&Math::Cephes::Matrix::check,$safeeval,
842: '&Math::Cephes::Matrix::check');
843: $safehole->wrap(\&Math::Cephes::Matrix::check,$safeeval,
844: '&Math::Cephes::Matrix::check');
845:
1.215 albertel 846: # $safehole->wrap(\&Math::Cephes::new_fract,$safeeval,'&new_fract');
847: # $safehole->wrap(\&Math::Cephes::radd,$safeeval,'&radd');
848: # $safehole->wrap(\&Math::Cephes::rsub,$safeeval,'&rsub');
849: # $safehole->wrap(\&Math::Cephes::rmul,$safeeval,'&rmul');
850: # $safehole->wrap(\&Math::Cephes::rdiv,$safeeval,'&rdiv');
851: # $safehole->wrap(\&Math::Cephes::euclid,$safeeval,'&euclid');
852:
1.91 ng 853: $safehole->wrap(\&Math::Random::random_beta,$safeeval,'&math_random_beta');
854: $safehole->wrap(\&Math::Random::random_chi_square,$safeeval,'&math_random_chi_square');
855: $safehole->wrap(\&Math::Random::random_exponential,$safeeval,'&math_random_exponential');
856: $safehole->wrap(\&Math::Random::random_f,$safeeval,'&math_random_f');
857: $safehole->wrap(\&Math::Random::random_gamma,$safeeval,'&math_random_gamma');
858: $safehole->wrap(\&Math::Random::random_multivariate_normal,$safeeval,'&math_random_multivariate_normal');
859: $safehole->wrap(\&Math::Random::random_multinomial,$safeeval,'&math_random_multinomial');
860: $safehole->wrap(\&Math::Random::random_noncentral_chi_square,$safeeval,'&math_random_noncentral_chi_square');
861: $safehole->wrap(\&Math::Random::random_noncentral_f,$safeeval,'&math_random_noncentral_f');
862: $safehole->wrap(\&Math::Random::random_normal,$safeeval,'&math_random_normal');
863: $safehole->wrap(\&Math::Random::random_permutation,$safeeval,'&math_random_permutation');
1.93 ng 864: $safehole->wrap(\&Math::Random::random_permuted_index,$safeeval,'&math_random_permuted_index');
1.91 ng 865: $safehole->wrap(\&Math::Random::random_uniform,$safeeval,'&math_random_uniform');
866: $safehole->wrap(\&Math::Random::random_poisson,$safeeval,'&math_random_poisson');
867: $safehole->wrap(\&Math::Random::random_uniform_integer,$safeeval,'&math_random_uniform_integer');
868: $safehole->wrap(\&Math::Random::random_negative_binomial,$safeeval,'&math_random_negative_binomial');
869: $safehole->wrap(\&Math::Random::random_binomial,$safeeval,'&math_random_binomial');
870: $safehole->wrap(\&Math::Random::random_seed_from_phrase,$safeeval,'&random_seed_from_phrase');
871: $safehole->wrap(\&Math::Random::random_set_seed_from_phrase,$safeeval,'&random_set_seed_from_phrase');
872: $safehole->wrap(\&Math::Random::random_get_seed,$safeeval,'&random_get_seed');
873: $safehole->wrap(\&Math::Random::random_set_seed,$safeeval,'&random_set_seed');
1.458 albertel 874: $safehole->wrap(\&Apache::loncommon::languages,$safeeval,'&languages');
1.305 albertel 875: $safehole->wrap(\&Apache::lonxml::error,$safeeval,'&LONCAPA_INTERNAL_ERROR');
1.311 albertel 876: $safehole->wrap(\&Apache::lonxml::debug,$safeeval,'&LONCAPA_INTERNAL_DEBUG');
1.420 albertel 877: $safehole->wrap(\&Apache::lonnet::logthis,$safeeval,'&LONCAPA_INTERNAL_LOGTHIS');
878: $safehole->wrap(\&Apache::inputtags::finalizeawards,$safeeval,'&LONCAPA_INTERNAL_FINALIZEAWARDS');
1.322 albertel 879: $safehole->wrap(\&Apache::caparesponse::get_sigrange,$safeeval,'&LONCAPA_INTERNAL_get_sigrange');
1.430 albertel 880: # use Data::Dumper;
881: # $safehole->wrap(\&Data::Dumper::Dumper,$safeeval,'&LONCAPA_INTERNAL_Dumper');
1.82 ng 882: #need to inspect this class of ops
883: # $safeeval->deny(":base_orig");
1.331 albertel 884: $safeeval->permit("require");
1.91 ng 885: $safeinit .= ';$external::target="'.$target.'";';
1.82 ng 886: &Apache::run::run($safeinit,$safeeval);
1.373 albertel 887: &initialize_rndseed($safeeval);
888: }
1.303 albertel 889:
1.393 albertel 890: sub clean_safespace {
891: my ($safeeval) = @_;
892: delete_package_recurse($safeeval->{Root});
893: }
894:
895: sub delete_package_recurse {
896: my ($package) = @_;
897: my @subp;
898: {
899: no strict 'refs';
900: while (my ($key,$val) = each(%{*{"$package\::"}})) {
901: if (!defined($val)) { next; }
902: local (*ENTRY) = $val;
903: if (defined *ENTRY{HASH} && $key =~ /::$/ &&
904: $key ne "main::" && $key ne "<none>::")
905: {
906: my ($p) = $package ne "main" ? "$package\::" : "";
907: ($p .= $key) =~ s/::$//;
908: push(@subp,$p);
909: }
910: }
911: }
912: foreach my $p (@subp) {
913: delete_package_recurse($p);
914: }
915: Symbol::delete_package($package);
916: }
917:
1.373 albertel 918: sub initialize_rndseed {
919: my ($safeeval)=@_;
920: my $rndseed;
1.423 albertel 921: my ($symb,$courseid,$domain,$name) = &Apache::lonnet::whichuser();
1.373 albertel 922: $rndseed=&Apache::lonnet::rndseed($symb,$courseid,$domain,$name);
923: my $safeinit = '$external::randomseed="'.$rndseed.'";';
924: &Apache::lonxml::debug("Setting rndseed to $rndseed");
925: &Apache::run::run($safeinit,$safeeval);
1.207 albertel 926: }
927:
928: sub default_homework_load {
929: my ($safeeval)=@_;
930: &Apache::lonxml::debug('Loading default_homework');
931: my $default=&Apache::lonnet::getfile('/home/httpd/html/res/adm/includes/default_homework.lcpm');
1.241 albertel 932: if ($default eq -1) {
1.207 albertel 933: &Apache::lonxml::error("<b>Unable to find <i>default_homework.lcpm</i></b>");
934: } else {
935: &Apache::run::run($default,$safeeval);
936: $Apache::lonxml::default_homework_loaded=1;
937: }
1.17 albertel 938: }
939:
1.358 albertel 940: {
941: my $alarm_depth;
942: sub init_alarm {
943: alarm(0);
944: $alarm_depth=0;
945: }
946:
947: sub start_alarm {
948: if ($alarm_depth<1) {
949: my $old=alarm($Apache::lonnet::perlvar{'lonScriptTimeout'});
950: if ($old) {
951: &Apache::lonxml::error("Cancelled an alarm of $old, this shouldn't occur.");
952: }
953: }
954: $alarm_depth++;
955: }
956:
957: sub end_alarm {
958: $alarm_depth--;
959: if ($alarm_depth<1) { alarm(0); }
960: }
961: }
1.328 albertel 962: my $metamode_was;
1.55 albertel 963: sub startredirection {
1.328 albertel 964: if (!$Apache::lonxml::redirection) {
965: $metamode_was=$Apache::lonxml::metamode;
966: }
967: $Apache::lonxml::metamode=0;
968: $Apache::lonxml::redirection++;
969: push (@Apache::lonxml::outputstack, '');
1.55 albertel 970: }
971:
972: sub endredirection {
1.328 albertel 973: if (!$Apache::lonxml::redirection) {
1.380 www 974: &Apache::lonxml::error("Endredirection was called before a startredirection, perhaps you have unbalanced tags. Some debugging information:".join ":",caller);
1.328 albertel 975: return '';
976: }
977: $Apache::lonxml::redirection--;
978: if (!$Apache::lonxml::redirection) {
979: $Apache::lonxml::metamode=$metamode_was;
980: }
981: pop @Apache::lonxml::outputstack;
1.97 albertel 982: }
1.459 albertel 983: sub in_redirection {
984: return ($Apache::lonxml::redirection > 0)
985: }
1.97 albertel 986:
987: sub end_tag {
988: my ($tagstack,$parstack,$token)=@_;
989: pop(@$tagstack);
990: pop(@$parstack);
991: &decreasedepth($token);
1.55 albertel 992: }
993:
1.17 albertel 994: sub initdepth {
995: @Apache::lonxml::depthcounter=();
1.439 albertel 996: undef($Apache::lonxml::last_depth_count);
1.17 albertel 997: }
998:
1.438 albertel 999:
1.339 albertel 1000: my @timers;
1001: my $lasttime;
1.438 albertel 1002: # @Apache::lonxml::depthcounter -> count of tags that exist so
1003: # far at each level
1.439 albertel 1004: # $Apache::lonxml::last_depth_count -> when ascending, need to
1005: # remember the count for the level below the current level (for
1006: # example going from 1_2 -> 1 -> 1_3 need to remember the 2 )
1.438 albertel 1007:
1.17 albertel 1008: sub increasedepth {
1.19 albertel 1009: my ($token) = @_;
1.439 albertel 1010: push(@Apache::lonxml::depthcounter,$Apache::lonxml::last_depth_count+1);
1011: undef($Apache::lonxml::last_depth_count);
1.340 albertel 1012: my $time;
1013: if ($Apache::lonxml::debug eq "1") {
1014: push(@timers,[&gettimeofday()]);
1015: $time=&tv_interval($lasttime);
1016: $lasttime=[&gettimeofday()];
1017: }
1.439 albertel 1018: my $spacing=' 'x($#Apache::lonxml::depthcounter);
1.438 albertel 1019: $Apache::lonxml::curdepth=join('_',@Apache::lonxml::depthcounter);
1.439 albertel 1020: # &Apache::lonxml::debug("s$spacing$Apache::lonxml::depth : $Apache::lonxml::olddepth : $Apache::lonxml::curdepth : $token->[1] : $time");
1.54 albertel 1021: #print "<br />s $Apache::lonxml::depth : $Apache::lonxml::olddepth : $curdepth : $token->[1]\n";
1.17 albertel 1022: }
1023:
1024: sub decreasedepth {
1.19 albertel 1025: my ($token) = @_;
1.439 albertel 1026: if ( $#Apache::lonxml::depthcounter == -1) {
1027: &Apache::lonxml::warning(&mt("Missing tags, unable to properly run file."));
1.43 albertel 1028: }
1.439 albertel 1029: $Apache::lonxml::last_depth_count = pop(@Apache::lonxml::depthcounter);
1030:
1.340 albertel 1031: my ($timer,$time);
1032: if ($Apache::lonxml::debug eq "1") {
1033: $timer=pop(@timers);
1034: $time=&tv_interval($lasttime);
1035: $lasttime=[&gettimeofday()];
1036: }
1.439 albertel 1037: my $spacing=' 'x($#Apache::lonxml::depthcounter);
1038: $Apache::lonxml::curdepth = join('_',@Apache::lonxml::depthcounter);
1039: # &Apache::lonxml::debug("e$spacing$Apache::lonxml::depth : $Apache::lonxml::olddepth : $Apache::lonxml::curdepth : $token->[1] : $time : ".&tv_interval($timer));
1.54 albertel 1040: #print "<br />e $Apache::lonxml::depth : $Apache::lonxml::olddepth : $token->[1] : $curdepth\n";
1.1 sakharuk 1041: }
1.19 albertel 1042:
1.399 albertel 1043: sub get_id {
1044: my ($parstack,$safeeval)=@_;
1045: my $id= &Apache::lonxml::get_param('id',$parstack,$safeeval);
1.449 albertel 1046: if ($env{'request.state'} eq 'construct' && $id =~ /([._]|[^\w\d\s[:punct:]])/) {
1.498 bisitz 1047: &error(&mt('ID [_1] contains invalid characters. IDs are only allowed to contain letters, numbers, spaces and -','"<tt>'.$id.'</tt>"'));
1.399 albertel 1048: }
1049: if ($id =~ /^\s*$/) { $id = $Apache::lonxml::curdepth; }
1050: return $id;
1051: }
1052:
1.180 albertel 1053: sub get_all_text_unbalanced {
1.190 albertel 1054: #there is a copy of this in lonpublisher.pm
1.326 albertel 1055: my($tag,$pars)= @_;
1056: my $token;
1057: my $result='';
1058: $tag='<'.$tag.'>';
1059: while ($token = $$pars[-1]->get_token) {
1060: if (($token->[0] eq 'T')||($token->[0] eq 'C')||($token->[0] eq 'D')) {
1.386 albertel 1061: if ($token->[0] eq 'T' && $token->[2]) {
1.382 albertel 1062: $result.='<![CDATA['.$token->[1].']]>';
1063: } else {
1064: $result.=$token->[1];
1065: }
1.326 albertel 1066: } elsif ($token->[0] eq 'PI') {
1067: $result.=$token->[2];
1068: } elsif ($token->[0] eq 'S') {
1069: $result.=$token->[4];
1070: } elsif ($token->[0] eq 'E') {
1071: $result.=$token->[2];
1072: }
1073: if ($result =~ /\Q$tag\E/is) {
1074: ($result,my $redo)=$result =~ /(.*)\Q$tag\E(.*)/is;
1075: #&Apache::lonxml::debug('Got a winner with leftovers ::'.$2);
1076: #&Apache::lonxml::debug('Result is :'.$1);
1077: $redo=$tag.$redo;
1078: &Apache::lonxml::newparser($pars,\$redo);
1079: last;
1080: }
1081: }
1082: return $result
1.462 foxr 1083:
1.204 albertel 1084: }
1085:
1.462 foxr 1086: #########################################################################
1087: # #
1088: # bubble line counter management #
1089: # #
1090: #########################################################################
1091:
1.447 albertel 1092: =pod
1093:
1094: For bubble grading mode and exam bubble printing mode, the tracking of
1095: the current 'bubble line number' is stored in the %env element
1096: 'form.counter', and is modifed and handled by the following routines.
1097:
1098: The value of it is stored in $Apache:lonxml::counter when live and
1099: stored back to env after done.
1100:
1101: =item &increment_counter($increment);
1102:
1103: Increments the internal counter environment variable a specified amount
1104:
1105: Optional Arguments:
1106: $increment - amount to increment by (defaults to 1)
1.462 foxr 1107: Also 1 if the value is negative or zero.
1.467 foxr 1108: $part_response - A concatenation of the part and response id
1109: identifying exactly what is being 'answered'.
1110:
1.447 albertel 1111:
1112: =cut
1113:
1.204 albertel 1114: sub increment_counter {
1.467 foxr 1115: my ($increment, $part_response) = @_;
1.481 raeburn 1116: if ($env{'form.grade_noincrement'}) { return; }
1.462 foxr 1117: if (!defined($increment) || $increment le 0) {
1118: $increment = 1;
1119: }
1120: $Apache::lonxml::counter += $increment;
1121:
1.466 foxr 1122: # If the caller supplied the response_id parameter,
1.462 foxr 1123: # Maintain its counter.. creating if necessary.
1124:
1.470 albertel 1125: if (defined($part_response)) {
1.467 foxr 1126: if (!defined($Apache::lonxml::counters_per_part{$part_response})) {
1127: $Apache::lonxml::counters_per_part{$part_response} = 0;
1.462 foxr 1128: }
1.467 foxr 1129: $Apache::lonxml::counters_per_part{$part_response} += $increment;
1130: my $new_value = $Apache::lonxml::counters_per_part{$part_response};
1.247 albertel 1131: }
1.462 foxr 1132:
1.289 sakharuk 1133: $Apache::lonxml::counter_changed=1;
1.204 albertel 1134: }
1135:
1.447 albertel 1136: =pod
1137:
1.461 foxr 1138: =item &init_counter($increment);
1.447 albertel 1139:
1140: Initialize the internal counter environment variable
1141:
1142: =cut
1143:
1.204 albertel 1144: sub init_counter {
1.391 albertel 1145: if ($env{'request.state'} eq 'construct') {
1146: $Apache::lonxml::counter=1;
1147: $Apache::lonxml::counter_changed=1;
1148: } elsif (defined($env{'form.counter'})) {
1.372 albertel 1149: $Apache::lonxml::counter=$env{'form.counter'};
1.247 albertel 1150: $Apache::lonxml::counter_changed=0;
1.237 sakharuk 1151: } else {
1.204 albertel 1152: $Apache::lonxml::counter=1;
1.247 albertel 1153: $Apache::lonxml::counter_changed=1;
1.204 albertel 1154: }
1155: }
1156:
1157: sub store_counter {
1.474 raeburn 1158: &Apache::lonnet::appenv({'form.counter' => $Apache::lonxml::counter});
1.401 albertel 1159: $Apache::lonxml::counter_changed=0;
1.204 albertel 1160: return '';
1.180 albertel 1161: }
1162:
1.398 albertel 1163: {
1164: my $state;
1165: sub clear_problem_counter {
1166: undef($state);
1167: &Apache::lonnet::delenv('form.counter');
1168: &Apache::lonxml::init_counter();
1169: &Apache::lonxml::store_counter();
1170: }
1171:
1172: sub remember_problem_counter {
1.422 albertel 1173: &Apache::lonnet::transfer_profile_to_env(undef,undef,1);
1.398 albertel 1174: $state = $env{'form.counter'};
1175: }
1176:
1177: sub restore_problem_counter {
1178: if (defined($state)) {
1.474 raeburn 1179: &Apache::lonnet::appenv({'form.counter' => $state});
1.398 albertel 1180: }
1181: }
1.401 albertel 1182: sub get_problem_counter {
1183: if ($Apache::lonxml::counter_changed) { &store_counter() }
1.422 albertel 1184: &Apache::lonnet::transfer_profile_to_env(undef,undef,1);
1.401 albertel 1185: return $env{'form.counter'};
1186: }
1.398 albertel 1187: }
1188:
1.462 foxr 1189: =pod
1190:
1.468 albertel 1191: =item bubble_lines_for_part(part_response)
1.462 foxr 1192:
1193: Returns the number of lines required to get a response for
1.467 foxr 1194: $part_response (this is just $Apache::lonxml::counters_per_part{$part_response}
1.462 foxr 1195:
1196: =cut
1197:
1198: sub bubble_lines_for_part {
1.467 foxr 1199: my ($part_response) = @_;
1.462 foxr 1200:
1.467 foxr 1201: if (!defined($Apache::lonxml::counters_per_part{$part_response})) {
1.462 foxr 1202: return 0;
1203: } else {
1.467 foxr 1204: return $Apache::lonxml::counters_per_part{$part_response};
1.462 foxr 1205: }
1206: }
1207:
1208: =pod
1209:
1210: =item clear_bubble_lines_for_part
1211:
1212: Clears the hash of bubble lines per part. If a caller
1213: needs to analyze several resources this should be called between
1214: resources to reset the hash for each problem being analyzed.
1215:
1216: =cut
1217:
1218: sub clear_bubble_lines_for_part {
1219: undef(%Apache::lonxml::counters_per_part);
1220: }
1221:
1222: =pod
1223:
1.468 albertel 1224: =item set_bubble_lines(part_response, value)
1.462 foxr 1225:
1226: If there is a problem part, that for whatever reason
1227: requires bubble lines that are not
1228: the same as the counter increment, it can call this sub during
1229: analysis to set its hash value explicitly.
1230:
1231: =cut
1232:
1233: sub set_bubble_lines {
1.467 foxr 1234: my ($part_response, $value) = @_;
1.462 foxr 1235:
1.467 foxr 1236: $Apache::lonxml::counters_per_part{$part_response} = $value;
1.462 foxr 1237: }
1238:
1239: =pod
1240:
1241: =item get_bubble_line_hash
1242:
1243: Returns the current bubble line hash. This is assumed to
1244: be small so we return a copy
1245:
1246:
1247: =cut
1248:
1249: sub get_bubble_line_hash {
1250: return %Apache::lonxml::counters_per_part;
1251: }
1252:
1253:
1254: #--------------------------------------------------
1255:
1.19 albertel 1256: sub get_all_text {
1.270 albertel 1257: my($tag,$pars,$style)= @_;
1258: my $gotfullstack=1;
1259: if (ref($pars) ne 'ARRAY') {
1260: $gotfullstack=0;
1261: $pars=[$pars];
1262: }
1263: if (ref($style) ne 'HASH') {
1264: $style={};
1265: }
1266: my $depth=0;
1267: my $token;
1268: my $result='';
1269: if ( $tag =~ m:^/: ) {
1270: my $tag=substr($tag,1);
1271: #&Apache::lonxml::debug("have:$tag:");
1272: my $top_empty=0;
1273: while (($depth >=0) && ($#$pars > -1) && (!$top_empty)) {
1274: while (($depth >=0) && ($token = $$pars[-1]->get_token)) {
1275: #&Apache::lonxml::debug("e token:$token->[0]:$depth:$token->[1]:".$#$pars.":".$#Apache::lonxml::pwd);
1276: if (($token->[0] eq 'T')||($token->[0] eq 'C')||($token->[0] eq 'D')) {
1.382 albertel 1277: if ($token->[2]) {
1278: $result.='<![CDATA['.$token->[1].']]>';
1279: } else {
1280: $result.=$token->[1];
1281: }
1.270 albertel 1282: } elsif ($token->[0] eq 'PI') {
1283: $result.=$token->[2];
1284: } elsif ($token->[0] eq 'S') {
1.316 albertel 1285: if ($token->[1] =~ /^\Q$tag\E$/i) { $depth++; }
1286: if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_ON$/) { $Apache::lonxml::usestyle=1; }
1287: if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_OFF$/) { $Apache::lonxml::usestyle=0; }
1.270 albertel 1288: $result.=$token->[4];
1289: } elsif ($token->[0] eq 'E') {
1.316 albertel 1290: if ( $token->[1] =~ /^\Q$tag\E$/i) { $depth--; }
1.270 albertel 1291: #skip sending back the last end tag
1.283 albertel 1292: if ($depth == 0 && exists($$style{'/'.$token->[1]}) && $Apache::lonxml::usestyle) {
1.270 albertel 1293: my $string=
1294: '<LONCAPA_INTERNAL_TURN_STYLE_OFF end="yes" />'.
1295: $$style{'/'.$token->[1]}.
1296: $token->[2].
1297: '<LONCAPA_INTERNAL_TURN_STYLE_ON />';
1298: &Apache::lonxml::newparser($pars,\$string);
1299: #&Apache::lonxml::debug("reParsing $string");
1300: next;
1301: }
1302: if ($depth > -1) {
1303: $result.=$token->[2];
1304: } else {
1305: $$pars[-1]->unget_token($token);
1306: }
1307: }
1308: }
1309: if (($depth >=0) && ($#$pars == 0) ) { $top_empty=1; }
1310: if (($depth >=0) && ($#$pars > 0) ) {
1311: pop(@$pars);
1312: pop(@Apache::lonxml::pwd);
1313: }
1314: }
1315: if ($top_empty && $depth >= 0) {
1316: #never found the end tag ran out of text, throw error send back blank
1317: &error('Never found end tag for <'.$tag.
1318: '> current string <pre>'.
1.314 albertel 1319: &HTML::Entities::encode($result,'<>&"').
1.270 albertel 1320: '</pre>');
1321: if ($gotfullstack) {
1322: my $newstring='</'.$tag.'>'.$result;
1323: &Apache::lonxml::newparser($pars,\$newstring);
1324: }
1325: $result='';
1326: }
1327: } else {
1328: while ($#$pars > -1) {
1329: while ($token = $$pars[-1]->get_token) {
1330: #&Apache::lonxml::debug("s token:$token->[0]:$depth:$token->[1]");
1331: if (($token->[0] eq 'T')||($token->[0] eq 'C')||
1332: ($token->[0] eq 'D')) {
1.382 albertel 1333: if ($token->[2]) {
1334: $result.='<![CDATA['.$token->[1].']]>';
1335: } else {
1336: $result.=$token->[1];
1337: }
1.270 albertel 1338: } elsif ($token->[0] eq 'PI') {
1339: $result.=$token->[2];
1340: } elsif ($token->[0] eq 'S') {
1.316 albertel 1341: if ( $token->[1] =~ /^\Q$tag\E$/i) {
1.270 albertel 1342: $$pars[-1]->unget_token($token); last;
1343: } else {
1344: $result.=$token->[4];
1345: }
1.316 albertel 1346: if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_ON$/) { $Apache::lonxml::usestyle=1; }
1347: if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_OFF$/) { $Apache::lonxml::usestyle=0; }
1.270 albertel 1348: } elsif ($token->[0] eq 'E') {
1349: $result.=$token->[2];
1350: }
1351: }
1352: if (($#$pars > 0) ) {
1353: pop(@$pars);
1354: pop(@Apache::lonxml::pwd);
1355: } else { last; }
1356: }
1357: }
1358: #&Apache::lonxml::debug("Exit:$result:");
1359: return $result
1.19 albertel 1360: }
1361:
1.23 albertel 1362: sub newparser {
1363: my ($parser,$contentref,$dir) = @_;
1.167 albertel 1364: push (@$parser,HTML::LCParser->new($contentref));
1.365 albertel 1365: $$parser[-1]->xml_mode(1);
1366: $$parser[-1]->marked_sections(1);
1.23 albertel 1367: if ( $dir eq '' ) {
1368: push (@Apache::lonxml::pwd, $Apache::lonxml::pwd[$#Apache::lonxml::pwd]);
1369: } else {
1370: push (@Apache::lonxml::pwd, $dir);
1371: }
1372: }
1.1 sakharuk 1373:
1.8 albertel 1374: sub parstring {
1.417 albertel 1375: my ($token) = @_;
1376: my (@vars,@values);
1377: foreach my $attr (@{$token->[3]}) {
1378: if ($attr!~/\W/) {
1379: my $val=$token->[2]->{$attr};
1380: $val =~ s/([\%\@\\\"\'])/\\$1/g;
1381: $val =~ s/(\$[^\{a-zA-Z_])/\\$1/g;
1382: $val =~ s/(\$)$/\\$1/;
1383: #if ($val =~ m/^[\%\@]/) { $val="\\".$val; }
1384: push(@vars,"\$$attr");
1385: push(@values,"\"$val\"");
1386: }
1387: }
1388: my $var_init =
1389: (@vars) ? 'my ('.join(',',@vars).') = ('.join(',',@values).');'
1390: : '';
1391: return $var_init;
1.8 albertel 1392: }
1.22 albertel 1393:
1.384 albertel 1394: sub extlink {
1395: my ($res,$exact)=@_;
1396: if (!$exact) {
1397: $res=&Apache::lonnet::hreflocation($Apache::lonxml::pwd[-1],$res);
1398: }
1399: push(@Apache::lonxml::extlinks,$res)
1400: }
1401:
1.34 www 1402: sub writeallows {
1.126 www 1403: unless ($#extlinks>=0) { return; }
1.377 albertel 1404: my $thisurl = &Apache::lonnet::clutter(shift);
1.372 albertel 1405: if ($env{'httpref.'.$thisurl}) {
1406: $thisurl=$env{'httpref.'.$thisurl};
1.111 www 1407: }
1.34 www 1408: my $thisdir=$thisurl;
1409: $thisdir=~s/\/[^\/]+$//;
1410: my %httpref=();
1.142 albertel 1411: foreach (@extlinks) {
1.34 www 1412: $httpref{'httpref.'.
1.444 albertel 1413: &Apache::lonnet::hreflocation($thisdir,&unescape($_))}=$thisurl;
1.142 albertel 1414: }
1.126 www 1415: @extlinks=();
1.474 raeburn 1416: &Apache::lonnet::appenv(\%httpref);
1.34 www 1417: }
1418:
1.281 albertel 1419: sub register_ssi {
1420: my ($url,%form)=@_;
1421: push (@Apache::lonxml::ssi_info,{'url'=>$url,'form'=>\%form});
1422: return '';
1423: }
1424:
1425: sub do_registered_ssi {
1426: foreach my $info (@Apache::lonxml::ssi_info) {
1427: my %form=%{ $info->{'form'}};
1428: my $url=$info->{'url'};
1429: &Apache::lonnet::ssi($url,%form);
1430: }
1431: }
1.448 albertel 1432:
1433: sub add_script_result {
1434: my ($display) = @_;
1435: push(@script_var_displays, $display);
1436: }
1437:
1.66 www 1438: #
1439: # Afterburner handles anchors, highlights and links
1440: #
1441: sub afterburn {
1442: my $result=shift;
1.154 albertel 1443: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
1444: ['highlight','anchor','link']);
1.372 albertel 1445: if ($env{'form.highlight'}) {
1446: foreach (split(/\,/,$env{'form.highlight'})) {
1.66 www 1447: my $anchorname=$_;
1448: my $matchthis=$anchorname;
1449: $matchthis=~s/\_+/\\s\+/g;
1.317 albertel 1450: $result=~s/(\Q$matchthis\E)/\<font color=\"red\"\>$1\<\/font\>/gs;
1.142 albertel 1451: }
1.66 www 1452: }
1.372 albertel 1453: if ($env{'form.link'}) {
1454: foreach (split(/\,/,$env{'form.link'})) {
1.66 www 1455: my ($anchorname,$linkurl)=split(/\>/,$_);
1456: my $matchthis=$anchorname;
1457: $matchthis=~s/\_+/\\s\+/g;
1.317 albertel 1458: $result=~s/(\Q$matchthis\E)/\<a href=\"$linkurl\"\>$1\<\/a\>/gs;
1.142 albertel 1459: }
1.66 www 1460: }
1.372 albertel 1461: if ($env{'form.anchor'}) {
1462: my $anchorname=$env{'form.anchor'};
1.66 www 1463: my $matchthis=$anchorname;
1464: $matchthis=~s/\_+/\\s\+/g;
1.317 albertel 1465: $result=~s/(\Q$matchthis\E)/\<a name=\"$anchorname\"\>$1\<\/a\>/s;
1.66 www 1466: $result.=(<<"ENDSCRIPT");
1.226 albertel 1467: <script type="text/javascript">
1.66 www 1468: document.location.hash='$anchorname';
1469: </script>
1470: ENDSCRIPT
1471: }
1472: return $result;
1473: }
1474:
1.79 www 1475: sub storefile {
1476: my ($file,$contents)=@_;
1.290 albertel 1477: &Apache::lonnet::correct_line_ends(\$contents);
1.79 www 1478: if (my $fh=Apache::File->new('>'.$file)) {
1479: print $fh $contents;
1480: $fh->close();
1.271 www 1481: return 1;
1.147 albertel 1482: } else {
1.482 bisitz 1483: &warning(&mt('Unable to save file [_1]','<tt>'.$file.'</tt>'));
1.271 www 1484: return 0;
1.79 www 1485: }
1486: }
1487:
1.151 albertel 1488: sub createnewhtml {
1.321 www 1489: my $title=&mt('Title of document goes here');
1490: my $body=&mt('Body of document goes here');
1491: my $filecontents=(<<SIMPLECONTENT);
1.78 www 1492: <html>
1493: <head>
1.321 www 1494: <title>$title</title>
1.78 www 1495: </head>
1496: <body bgcolor="#FFFFFF">
1.321 www 1497: $body
1.78 www 1498: </body>
1499: </html>
1500: SIMPLECONTENT
1.321 www 1501: return $filecontents;
1.151 albertel 1502: }
1503:
1.274 albertel 1504: sub createnewsty {
1505: my $filecontents=(<<SIMPLECONTENT);
1506: <definetag name="">
1507: <render>
1508: <web></web>
1509: <tex></tex>
1510: </render>
1511: </definetag>
1512: SIMPLECONTENT
1513: return $filecontents;
1514: }
1515:
1.493 raeburn 1516: sub createnewjs {
1517: my $filecontents=(<<SIMPLECONTENT);
1518: <script type="text/javascript" language="Javascript">
1519:
1520: </script>
1521: SIMPLECONTENT
1522: return $filecontents;
1523: }
1524:
1.472 www 1525: sub verify_html {
1526: my ($filecontents)=@_;
1527: if ($filecontents!~/(?:\<|\<\;)(?:html|xml)[^\<]*(?:\>|\>\;)/is) {
1528: return &mt('File does not have [_1] or [_2] starting tag','<html>','<xml>');
1529: }
1530: if ($filecontents!~/(?:\<|\<\;)\/(?:html|xml)(?:\>|\>\;)/is) {
1531: return &mt('File does not have [_1] or [_2] ending tag','<html>','<xml>');
1532: }
1533: if ($filecontents!~/(?:\<|\<\;)(?:body|frameset)[^\<]*(?:\>|\>\;)/is) {
1534: return &mt('File does not have [_1] or [_2] starting tag','<body>','<frameset>');
1535: }
1536: if ($filecontents!~/(?:\<|\<\;)\/(?:body|frameset)[^\<]*(?:\>|\>\;)/is) {
1537: return &mt('File does not have [_1] or [_2] ending tag','<body>','<frameset>');
1538: }
1539: return '';
1540: }
1.147 albertel 1541:
1.478 www 1542: sub renderingoptions {
1543: my %langchoices=('' => '');
1544: foreach (&Apache::loncommon::languageids()) {
1545: if (&Apache::loncommon::supportedlanguagecode($_)) {
1546: $langchoices{&Apache::loncommon::supportedlanguagecode($_)}
1547: = &Apache::loncommon::plainlanguagedescription($_);
1548: }
1549: }
1.500 raeburn 1550: my $output;
1551: unless ($env{'form.forceedit'}) {
1.504 ! bisitz 1552: $output .=
! 1553: '<span class="LC_nobreak">'.
1.500 raeburn 1554: &mt('Language:').' '.
1.504 ! bisitz 1555: &Apache::loncommon::select_form(
! 1556: $env{'form.languages'},
! 1557: 'languages',
! 1558: &Apache::lonlocal::texthash(%langchoices)).
! 1559: '</span>';
1.500 raeburn 1560: }
1.504 ! bisitz 1561: $output .=
! 1562: ' <span class="LC_nobreak">'.
1.479 bisitz 1563: &mt('Math Rendering:').' '.
1.504 ! bisitz 1564: &Apache::loncommon::select_form(
! 1565: $env{'form.texengine'},
! 1566: 'texengine',
! 1567: &Apache::lonlocal::texthash
! 1568: ('' => '',
! 1569: 'tth' => 'tth (TeX to HTML)',
! 1570: 'jsMath' => 'jsMath',
! 1571: 'mimetex' => 'mimetex (Convert to Images)')).
! 1572: '</span>';
1.500 raeburn 1573: return $output;
1.478 www 1574: }
1575:
1.151 albertel 1576: sub inserteditinfo {
1.470 albertel 1577: my ($filecontents, $filetype, $filename)=@_;
1.314 albertel 1578: $filecontents = &HTML::Entities::encode($filecontents,'<>&"');
1.274 albertel 1579: my $xml_help = '';
1.321 www 1580: my $initialize='';
1.452 albertel 1581: my $textarea_id = 'filecont';
1.492 raeburn 1582: my $dragmath_button;
1.452 albertel 1583: my ($add_to_onload, $add_to_onresize);
1.456 albertel 1584: $initialize=&Apache::lonhtmlcommon::spellheader();
1585: if ($filetype eq 'html'
1586: && (!&Apache::lonhtmlcommon::htmlareablocked() &&
1587: &Apache::lonhtmlcommon::htmlareabrowser())) {
1.463 albertel 1588: $textarea_id .= '___Frame';
1589: my $lang = &Apache::lonhtmlcommon::htmlarea_lang();
1.456 albertel 1590: $initialize.=(<<FULLPAGE);
1.321 www 1591: <script type="text/javascript">
1.463 albertel 1592: lonca
1.321 www 1593: function initDocument() {
1.463 albertel 1594: var oFCKeditor = new FCKeditor('filecont');
1595: oFCKeditor.Config['CustomConfigurationsPath'] = '/fckeditor/loncapaconfig.js' ;
1596: oFCKeditor.Config['FullPage'] = true
1597: oFCKeditor.Config['AutoDetectLanguage'] = false;
1598: oFCKeditor.Config['DefaultLanguage'] = "$lang";
1599: oFCKeditor.ReplaceTextarea();
1600: }
1601: function check_if_dirty(editor) {
1602: if (editor.IsDirty()) {
1603: unClean();
1604: }
1605: }
1606: function FCKeditor_OnComplete(editor) {
1607: editor.Events.AttachEvent("OnSelectionChange",check_if_dirty);
1608: resize_textarea('$textarea_id','LC_aftertextarea');
1.321 www 1609: }
1610: </script>
1611: FULLPAGE
1.456 albertel 1612: } else {
1613: $initialize.=(<<FULLPAGE);
1.347 albertel 1614: <script type="text/javascript">
1615: function initDocument() {
1.453 albertel 1616: resize_textarea('$textarea_id','LC_aftertextarea');
1.347 albertel 1617: }
1618: </script>
1619: FULLPAGE
1.502 raeburn 1620: if ($filetype eq 'html' || $filetype eq 'tex') {
1.492 raeburn 1621: $initialize .= "\n".&Apache::lonhtmlcommon::dragmath_js('EditMathPopup');
1622: $dragmath_button = &Apache::lonhtmlcommon::dragmath_button('filecont',1);
1623: }
1.456 albertel 1624: }
1625:
1626: $add_to_onload = 'initDocument();';
1627: $add_to_onresize = "resize_textarea('$textarea_id','LC_aftertextarea');";
1628:
1629: if ($filetype eq 'html') {
1.321 www 1630: $xml_help=&Apache::loncommon::helpLatexCheatsheet();
1.274 albertel 1631: }
1.452 albertel 1632:
1.254 albertel 1633: my $titledisplay=&display_title();
1.501 raeburn 1634: my $wysiwyglink;
1.426 banghart 1635: my %lt=&Apache::lonlocal::texthash('st' => 'Save and Edit',
1636: 'vi' => 'Save and View',
1.427 banghart 1637: 'dv' => 'Discard Edits and View',
1.428 banghart 1638: 'un' => 'undo',
1.280 www 1639: 'ed' => 'Edit');
1.470 albertel 1640: my $spelllink .=&Apache::lonhtmlcommon::spelllink('xmledit','filecont');
1.451 albertel 1641: my $textarea_events = &Apache::edit::element_change_detection();
1642: my $form_events = &Apache::edit::form_change_detection();
1.491 raeburn 1643: my $htmlerror;
1644: if ($filetype eq 'html') {
1645: $htmlerror=&verify_html($filecontents);
1646: if ($htmlerror) {
1647: $htmlerror='<span class="LC_error">'.$htmlerror.'</span>';
1648: }
1.501 raeburn 1649: if (&Apache::lonhtmlcommon::htmlareabrowser()) {
1650: if (&Apache::lonhtmlcommon::htmlareablocked()) {
1651: $wysiwyglink = &Apache::lonhtmlcommon::enablelink($textarea_id);
1652: } else {
1653: $wysiwyglink = &Apache::lonhtmlcommon::disablelink($textarea_id);
1654: }
1655: }
1.472 www 1656: }
1.78 www 1657: my $editfooter=(<<ENDFOOTER);
1.321 www 1658: $initialize
1.78 www 1659: <a name="editsection" />
1.451 albertel 1660: <form $form_events method="post" name="xmledit">
1.470 albertel 1661: <div class="LC_edit_problem_editxml_header">
1662: <table class="LC_edit_problem_header_title"><tr><td>
1663: $filename
1664: </td><td align="right">
1665: $xml_help
1666: </td></tr>
1667: </table>
1668: <div class="LC_edit_problem_discards">
1669: <input type="submit" name="discardview" accesskey="d" value="$lt{'dv'}" />
1670: <input type="submit" name="Undo" accesskey="u" value="$lt{'un'}" />
1.492 raeburn 1671: $dragmath_button $spelllink $htmlerror
1.470 albertel 1672: </div>
1673: <div class="LC_edit_problem_saves">
1674: <input type="submit" name="savethisfile" accesskey="s" value="$lt{'st'}" />
1675: <input type="submit" name="viewmode" accesskey="v" value="$lt{'vi'}" />
1676: </div>
1677: </div>
1678: <textarea $textarea_events style="width:100%" cols="80" rows="44" name="filecont" id="filecont">$filecontents</textarea>
1679: <div id="LC_aftertextarea">
1.501 raeburn 1680: $wysiwyglink
1.470 albertel 1681: <br />
1682: $titledisplay
1683: </div>
1.78 www 1684: </form>
1.321 www 1685: </body>
1.78 www 1686: ENDFOOTER
1.452 albertel 1687: return ($editfooter,$add_to_onload,$add_to_onresize);;
1.78 www 1688: }
1689:
1.152 albertel 1690: sub get_target {
1.372 albertel 1691: my $viewgrades=&Apache::lonnet::allowed('vgr',$env{'request.course.id'});
1692: if ( $env{'request.state'} eq 'published') {
1693: if ( defined($env{'form.grade_target'})
1.152 albertel 1694: && ($viewgrades == 'F' )) {
1.372 albertel 1695: return ($env{'form.grade_target'});
1696: } elsif (defined($env{'form.grade_target'})) {
1697: if (($env{'form.grade_target'} eq 'web') ||
1698: ($env{'form.grade_target'} eq 'tex') ) {
1699: return $env{'form.grade_target'}
1.153 albertel 1700: } else {
1701: return 'web';
1702: }
1.152 albertel 1703: } else {
1704: return 'web';
1705: }
1.372 albertel 1706: } elsif ($env{'request.state'} eq 'construct') {
1707: if ( defined($env{'form.grade_target'})) {
1708: return ($env{'form.grade_target'});
1.152 albertel 1709: } else {
1710: return 'web';
1711: }
1712: } else {
1713: return 'web';
1714: }
1715: }
1716:
1.24 sakharuk 1717: sub handler {
1.255 sakharuk 1718: my $request=shift;
1.493 raeburn 1719:
1.255 sakharuk 1720: my $target=&get_target();
1.372 albertel 1721: $Apache::lonxml::debug=$env{'user.debug'};
1.255 sakharuk 1722:
1.364 albertel 1723: &Apache::loncommon::content_type($request,'text/html');
1.255 sakharuk 1724: &Apache::loncommon::no_cache($request);
1.372 albertel 1725: if ($env{'request.state'} eq 'published') {
1.363 albertel 1726: $request->set_last_modified(&Apache::lonnet::metadata($request->uri,
1727: 'lastrevisiondate'));
1728: }
1.499 raeburn 1729: # Embedded Flash movies from Camtasia served from https will not display in IE
1730: # if XML config file has expired from cache.
1731: if ($ENV{'SERVER_PORT'} == 443) {
1732: if ($request->uri =~ /\.xml$/) {
1733: my ($httpbrowser,$clientbrowser) =
1734: &Apache::loncommon::decode_user_agent($request);
1735: if ($clientbrowser =~ /^explorer$/i) {
1736: delete $request->headers_out->{'Cache-control'};
1737: delete $request->headers_out->{'Pragma'};
1738: my $expiration = time + 60;
1739: my $date=strftime("%a, %d %b %Y %H:%M:%S GMT",gmtime($expiration));
1740: $request->headers_out->set("Expires" => $date);
1741: }
1742: }
1743: }
1.255 sakharuk 1744: $request->send_http_header;
1745:
1746: return OK if $request->header_only;
1.68 www 1747:
1748:
1.255 sakharuk 1749: my $file=&Apache::lonnet::filelocation("",$request->uri);
1.502 raeburn 1750: my ($filetype,$breadcrumbtext);
1751: if ($file =~ /\.(sty|css|js|txt|tex)$/) {
1.493 raeburn 1752: $filetype=$1;
1.274 albertel 1753: } else {
1754: $filetype='html';
1755: }
1.502 raeburn 1756: if ($filetype eq 'sty') {
1757: $breadcrumbtext = 'Style File Editor';
1758: } elsif ($filetype eq 'js') {
1759: $breadcrumbtext = 'Javascript Editor';
1760: } elsif ($filetype eq 'css') {
1761: $breadcrumbtext = 'CSS Editor';
1762: } elsif ($filetype eq 'txt') {
1763: $breadcrumbtext = 'Text Editor';
1764: } elsif ($filetype eq 'tex') {
1765: $breadcrumbtext = 'TeX Editor';
1766: } else {
1767: $breadcrumbtext = 'HTML Editor';
1768: }
1.493 raeburn 1769:
1.78 www 1770: #
1771: # Edit action? Save file.
1772: #
1.428 banghart 1773: if (!($env{'request.state'} eq 'published')) {
1774: if ($env{'form.savethisfile'} || $env{'form.viewmode'} || $env{'form.Undo'}) {
1.429 albertel 1775: my $html_file=&Apache::lonnet::getfile($file);
1776: my $error = &Apache::lonhomework::handle_save_or_undo($request, \$html_file, \$env{'form.filecont'});
1.472 www 1777: if ($env{'form.savethisfile'}) {
1778: $env{'form.editmode'}='Edit'; #force edit mode
1779: }
1.255 sakharuk 1780: }
1781: }
1782: my %mystyle;
1783: my $result = '';
1784: my $filecontents=&Apache::lonnet::getfile($file);
1785: if ($filecontents eq -1) {
1.402 albertel 1786: my $start_page=&Apache::loncommon::start_page('File Error');
1.412 albertel 1787: my $end_page=&Apache::loncommon::end_page();
1.495 bisitz 1788: my $errormsg='<p class="LC_error">'
1789: .&mt('File not found: [_1]'
1790: ,'<span class="LC_filename">'.$file.'</span>')
1791: .'</p>';
1.255 sakharuk 1792: $result=(<<ENDNOTFOUND);
1.402 albertel 1793: $start_page
1.495 bisitz 1794: $errormsg
1.402 albertel 1795: $end_page
1.78 www 1796: ENDNOTFOUND
1.343 albertel 1797: $filecontents='';
1.372 albertel 1798: if ($env{'request.state'} ne 'published') {
1.274 albertel 1799: if ($filetype eq 'sty') {
1800: $filecontents=&createnewsty();
1.493 raeburn 1801: } elsif ($filetype eq 'js') {
1802: $filecontents=&createnewjs();
1.502 raeburn 1803: } elsif ($filetype ne 'css' && $filetype ne 'txt' && $filetype ne 'tex') {
1.274 albertel 1804: $filecontents=&createnewhtml();
1805: }
1.372 albertel 1806: $env{'form.editmode'}='Edit'; #force edit mode
1.255 sakharuk 1807: }
1808: } else {
1.372 albertel 1809: unless ($env{'request.state'} eq 'published') {
1.343 albertel 1810: if ($filecontents=~/BEGIN LON-CAPA Internal/) {
1.381 www 1811: &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 1812: }
1.264 www 1813: #
1814: # we are in construction space, see if edit mode forced
1.385 albertel 1815: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
1816: ['editmode']);
1.255 sakharuk 1817: }
1.427 banghart 1818: if (!$env{'form.editmode'} || $env{'form.viewmode'} || $env{'form.discardview'}) {
1.493 raeburn 1819: if ($filetype eq 'html' || $filetype eq 'sty') {
1820: &Apache::structuretags::reset_problem_globals();
1821: $result = &Apache::lonxml::xmlparse($request,$target,
1822: $filecontents,'',%mystyle);
1.455 albertel 1823: # .html files may contain <problem> or <Task> need to clean
1824: # up if it did
1.493 raeburn 1825: &Apache::structuretags::reset_problem_globals();
1826: &Apache::lonhomework::finished_parsing();
1.502 raeburn 1827: } elsif ($filetype eq 'tex') {
1.503 raeburn 1828: $result = &Apache::lontexconvert::converted(\$filecontents,
1829: $env{'form.texengine'});
1830: if ($env{'form.return_only_error_and_warning_counts'}) {
1831: if (&verify_html('<html><body>'.$result.'</body></html>')) {
1832: $errorcount++;
1833: }
1834: $result = "$errorcount:$warningcount";
1835: }
1.493 raeburn 1836: } else {
1837: $result = $filecontents;
1838: }
1.385 albertel 1839: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
1840: ['rawmode']);
1.395 albertel 1841: if ($env{'form.rawmode'}) { $result = $filecontents; }
1.503 raeburn 1842: if (($filetype ne 'html') &&
1843: (!$env{'form.return_only_error_and_warning_counts'})) {
1.502 raeburn 1844: my $nochgview = 1;
1.495 bisitz 1845: my $controls = '';
1846: if ($env{'request.state'} eq 'construct') {
1847: $controls = &Apache::loncommon::head_subbox(
1848: &Apache::loncommon::CSTR_pageheader()
1849: .&Apache::londefdef::edit_controls($nochgview));
1850: }
1.502 raeburn 1851: if ($filetype ne 'sty' && $filetype ne 'tex') {
1.493 raeburn 1852: $result =~ s/</</g;
1853: $result =~ s/>/>/g;
1854: $result = '<table class="LC_sty_begin">'.
1855: '<tr><td><b><pre>'.$result.
1856: '</pre></b></td></tr></table>';
1857: }
1858: if ($env{'environment.remote'} eq 'off') {
1.495 bisitz 1859: my $brcrum;
1860: if ($env{'request.state'} eq 'construct') {
1.496 bisitz 1861: $brcrum = [{'href' => &Apache::loncommon::authorspace(),
1.495 bisitz 1862: 'text' => 'Construction Space'},
1863: {'href' => '',
1.502 raeburn 1864: 'text' => $breadcrumbtext}];
1.495 bisitz 1865: } else {
1866: $brcrum = ''; # FIXME: Where are we?
1867: }
1868: my %options = ('bread_crumbs' => $brcrum,
1869: 'bgcolor' => '#FFFFFF');
1870: $result =
1871: &Apache::loncommon::start_page(undef,undef,\%options)
1872: .$controls
1873: .$result
1874: .&Apache::loncommon::end_page();
1.493 raeburn 1875: } else {
1876: $result = $controls.$result;
1877: }
1878: }
1.495 bisitz 1879: }
1.147 albertel 1880: }
1.456 albertel 1881:
1.78 www 1882: #
1883: # Edit action? Insert editing commands
1884: #
1.372 albertel 1885: unless ($env{'request.state'} eq 'published') {
1.427 banghart 1886: if ($env{'form.editmode'} && (!($env{'form.viewmode'})) && (!($env{'form.discardview'})))
1.450 albertel 1887: {
1.470 albertel 1888: my $displayfile=$request->uri;
1889: $displayfile=~s/^\/[^\/]*//;
1890:
1.452 albertel 1891: my ($edit_info, $add_to_onload, $add_to_onresize)=
1.470 albertel 1892: &inserteditinfo($filecontents,$filetype,$displayfile);
1.450 albertel 1893:
1894: my %options =
1895: ('add_entries' =>
1.495 bisitz 1896: {'onresize' => $add_to_onresize,
1897: 'onload' => $add_to_onload, });
1.500 raeburn 1898: my $header;
1899: if ($env{'request.state'} eq 'construct') {
1900: $options{'bread_crumbs'} = [{
1901: 'href' => &Apache::loncommon::authorspace(),
1902: 'text' => 'Construction Space'},
1903: {'href' => '',
1.502 raeburn 1904: 'text' => $breadcrumbtext}];
1.500 raeburn 1905: $header = &Apache::loncommon::head_subbox(
1906: &Apache::loncommon::CSTR_pageheader());
1907: }
1.402 albertel 1908: if ($env{'environment.remote'} ne 'off') {
1909: $options{'bgcolor'} = '#FFFFFF';
1.450 albertel 1910: $options{'only_body'} = 1;
1.349 albertel 1911: }
1.452 albertel 1912: my $js =
1913: &Apache::edit::js_change_detection().
1914: &Apache::loncommon::resize_textarea_js();
1.451 albertel 1915: my $start_page = &Apache::loncommon::start_page(undef,$js,
1.402 albertel 1916: \%options);
1.495 bisitz 1917: $result = $start_page
1.500 raeburn 1918: .$header
1.495 bisitz 1919: .&Apache::lonxml::message_location()
1920: .$edit_info
1921: .&Apache::loncommon::end_page();
1.493 raeburn 1922: }
1.147 albertel 1923: }
1.402 albertel 1924: if ($filetype eq 'html') { &writeallows($request->uri); }
1.501 raeburn 1925:
1.309 albertel 1926: &Apache::lonxml::add_messages(\$result);
1.255 sakharuk 1927: $request->print($result);
1928:
1929: return OK;
1.253 albertel 1930: }
1931:
1932: sub display_title {
1933: my $result;
1.372 albertel 1934: if ($env{'request.state'} eq 'construct') {
1.253 albertel 1935: my $title=&Apache::lonnet::gettitle();
1936: if (!defined($title) || $title eq '') {
1.372 albertel 1937: $title = $env{'request.filename'};
1.253 albertel 1938: $title = substr($title, rindex($title, '/') + 1);
1939: }
1.476 bisitz 1940: $result = "<script type='text/javascript'>top.document.title = '$title - LON-CAPA "
1941: .&mt('Construction Space')."';</script>";
1.253 albertel 1942: }
1943: return $result;
1.24 sakharuk 1944: }
1.147 albertel 1945:
1.22 albertel 1946: sub debug {
1.298 albertel 1947: if ($Apache::lonxml::debug eq "1") {
1948: $|=1;
1.300 albertel 1949: my $request=$Apache::lonxml::request;
1.388 albertel 1950: if (!$request) {
1951: eval { $request=Apache->request; };
1952: }
1953: if (!$request) {
1954: eval { $request=Apache2::RequestUtil->request; };
1955: }
1.314 albertel 1956: $request->print('<font size="-2"><pre>DEBUG:'.&HTML::Entities::encode($_[0],'<>&"')."</pre></font>\n");
1.346 albertel 1957: #&Apache::lonnet::logthis($_[0]);
1.298 albertel 1958: }
1.22 albertel 1959: }
1.49 albertel 1960:
1.348 albertel 1961: sub show_error_warn_msg {
1.372 albertel 1962: if ($env{'request.filename'} eq '/home/httpd/html/res/lib/templates/simpleproblem.problem' &&
1963: &Apache::lonnet::allowed('mdc',$env{'request.course.id'})) {
1.351 albertel 1964: return 1;
1965: }
1.348 albertel 1966: return (($Apache::lonxml::debug eq 1) ||
1.372 albertel 1967: ($env{'request.state'} eq 'construct') ||
1.348 albertel 1968: ($Apache::lonhomework::browse eq 'F'
1969: &&
1.372 albertel 1970: $env{'form.show_errors'} eq 'on'));
1.348 albertel 1971: }
1972:
1.22 albertel 1973: sub error {
1.454 albertel 1974: my @errors = @_;
1975:
1.336 albertel 1976: $errorcount++;
1.454 albertel 1977:
1.490 www 1978: $Apache::lonxml::internal_error=1;
1979:
1.454 albertel 1980: if (defined($Apache::inputtags::part)) {
1981: if ( @Apache::inputtags::response ) {
1982: push(@errors,
1983: &mt("This error occurred while processing response [_1] in part [_2]",
1984: $Apache::inputtags::response[-1],
1985: $Apache::inputtags::part));
1986: } else {
1987: push(@errors,
1988: &mt("This error occurred while processing part [_1]",
1989: $Apache::inputtags::part));
1990: }
1991: }
1992:
1.348 albertel 1993: if ( &show_error_warn_msg() ) {
1.336 albertel 1994: # If printing in construction space, put the error inside <pre></pre>
1995: push(@Apache::lonxml::error_messages,
1.484 bisitz 1996: $Apache::lonxml::warnings_error_header
1997: .'<div class="LC_error">'
1998: .'<b>'.&mt('ERROR:').' </b>'.join("<br />\n",@errors)
1999: ."</div>\n");
1.336 albertel 2000: $Apache::lonxml::warnings_error_header='';
2001: } else {
2002: my $errormsg;
2003: my ($symb)=&Apache::lonnet::symbread();
2004: if ( !$symb ) {
2005: #public or browsers
1.486 bisitz 2006: $errormsg=&mt("An error occurred while processing this resource. The author has been notified.");
1.403 albertel 2007: }
1.413 albertel 2008: my $host=$Apache::lonnet::perlvar{'lonHostID'};
1.476 bisitz 2009: push(@errors,
2010: &mt("The error occurred on host [_1]",
2011: "<tt>$host</tt>"));
1.454 albertel 2012:
2013: my $msg = join('<br />', @errors);
2014:
1.336 albertel 2015: #notify author
1.403 albertel 2016: &Apache::lonmsg::author_res_msg($env{'request.filename'},$msg);
1.336 albertel 2017: #notify course
1.372 albertel 2018: if ( $symb && $env{'request.course.id'} ) {
1.380 www 2019: my $cnum=$env{'course.'.$env{'request.course.id'}.'.num'};
2020: my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
1.440 albertel 2021: my (undef,%users)=&Apache::lonmsg::decide_receiver(undef,0,1,1,1);
1.372 albertel 2022: my $declutter=&Apache::lonnet::declutter($env{'request.filename'});
1.435 raeburn 2023: my $baseurl = &Apache::lonnet::clutter($declutter);
1.336 albertel 2024: my @userlist;
2025: foreach (keys %users) {
2026: my ($user,$domain) = split(/:/, $_);
2027: push(@userlist,"$user\@$domain");
1.380 www 2028: my $key=$declutter.'_'.$user.'_'.$domain;
2029: my %lastnotified=&Apache::lonnet::get('nohist_xmlerrornotifications',
2030: [$key],
2031: $cdom,$cnum);
2032: my $now=time;
2033: if ($now-$lastnotified{$key}>86400) {
1.434 raeburn 2034: my $title = &Apache::lonnet::gettitle($symb);
2035: my $sentmessage;
1.380 www 2036: &Apache::lonmsg::user_normal_msg($user,$domain,
1.435 raeburn 2037: "Error [$title]",$msg,'',$baseurl,'','',
1.434 raeburn 2038: \$sentmessage,$symb,$title,1);
1.380 www 2039: &Apache::lonnet::put('nohist_xmlerrornotifications',
2040: {$key => $now},
2041: $cdom,$cnum);
2042: }
1.336 albertel 2043: }
1.372 albertel 2044: if ($env{'request.role.adv'}) {
1.486 bisitz 2045: $errormsg=&mt("An error occurred while processing this resource. The course personnel ([_1]) and the author have been notified.",join(', ',@userlist));
1.336 albertel 2046: } else {
1.486 bisitz 2047: $errormsg=&mt("An error occurred while processing this resource. The instructor has been notified.");
1.336 albertel 2048: }
2049: }
2050: push(@Apache::lonxml::error_messages,"<b>$errormsg</b> <br />");
1.52 albertel 2051: }
1.22 albertel 2052: }
1.49 albertel 2053:
1.22 albertel 2054: sub warning {
1.295 albertel 2055: $warningcount++;
1.261 albertel 2056:
1.372 albertel 2057: if ($env{'form.grade_target'} ne 'tex') {
1.348 albertel 2058: if ( &show_error_warn_msg() ) {
1.309 albertel 2059: push(@Apache::lonxml::warning_messages,
1.484 bisitz 2060: $Apache::lonxml::warnings_error_header
2061: .'<div class="LC_warning">'
2062: .&mt('[_1]W[_2]ARNING','<b>','</b>')."<b>:</b> ".join('<br />',@_)
2063: ."</div>\n"
1.482 bisitz 2064: );
1.295 albertel 2065: $Apache::lonxml::warnings_error_header='';
2066: }
2067: }
1.309 albertel 2068: }
2069:
2070: sub info {
1.372 albertel 2071: if ($env{'form.grade_target'} ne 'tex'
2072: && $env{'request.state'} eq 'construct') {
1.309 albertel 2073: push(@Apache::lonxml::info_messages,join('<br />',@_)."<br />\n");
2074: }
2075: }
2076:
2077: sub message_location {
2078: return '__LONCAPA_INTERNAL_MESSAGE_LOCATION__';
2079: }
2080:
2081: sub add_messages {
2082: my ($msg)=@_;
2083: my $result=join(' ',
2084: @Apache::lonxml::info_messages,
2085: @Apache::lonxml::error_messages,
2086: @Apache::lonxml::warning_messages);
2087: undef(@Apache::lonxml::info_messages);
2088: undef(@Apache::lonxml::error_messages);
2089: undef(@Apache::lonxml::warning_messages);
2090: $$msg=~s/__LONCAPA_INTERNAL_MESSAGE_LOCATION__/$result/;
2091: $$msg=~s/__LONCAPA_INTERNAL_MESSAGE_LOCATION__//g;
1.83 albertel 2092: }
2093:
2094: sub get_param {
1.213 albertel 2095: my ($param,$parstack,$safeeval,$context,$case_insensitive) = @_;
2096: if ( ! $context ) { $context = -1; }
2097: my $args ='';
2098: if ( $#$parstack > (-2-$context) ) { $args=$$parstack[$context]; }
1.297 sakharuk 2099: if ( ! $Apache::lonxml::usestyle ) {
2100: $args=$Apache::lonxml::style_values.$args;
2101: }
1.213 albertel 2102: if ( ! $args ) { return undef; }
2103: if ( $case_insensitive ) {
1.417 albertel 2104: if ($args =~ s/(my (?:.*))(\$\Q$param\E[,\)])/$1.lc($2)/ei) {
1.213 albertel 2105: return &Apache::run::run("{$args;".'return $'.$param.'}',
2106: $safeeval); #'
2107: } else {
2108: return undef;
2109: }
2110: } else {
1.417 albertel 2111: if ( $args =~ /my .*\$\Q$param\E[,\)]/ ) {
1.213 albertel 2112: return &Apache::run::run("{$args;".'return $'.$param.'}',
2113: $safeeval); #'
2114: } else {
2115: return undef;
2116: }
2117: }
1.22 albertel 2118: }
2119:
1.132 albertel 2120: sub get_param_var {
1.213 albertel 2121: my ($param,$parstack,$safeeval,$context,$case_insensitive) = @_;
1.132 albertel 2122: if ( ! $context ) { $context = -1; }
2123: my $args ='';
2124: if ( $#$parstack > (-2-$context) ) { $args=$$parstack[$context]; }
1.297 sakharuk 2125: if ( ! $Apache::lonxml::usestyle ) {
2126: $args=$Apache::lonxml::style_values.$args;
2127: }
1.230 albertel 2128: &Apache::lonxml::debug("Args are $args param is $param");
1.213 albertel 2129: if ($case_insensitive) {
1.419 albertel 2130: if (! ($args=~s/(my (?:.*))(\$\Q$param\E[,\)])/$1.lc($2)/ei)) {
1.213 albertel 2131: return undef;
2132: }
1.419 albertel 2133: } elsif ( $args !~ /my .*\$\Q$param\E[,\)]/ ) { return undef; }
1.132 albertel 2134: my $value=&Apache::run::run("{$args;".'return $'.$param.'}',$safeeval); #'
1.230 albertel 2135: &Apache::lonxml::debug("first run is $value");
1.341 albertel 2136: if ($value =~ /^[\$\@\%][a-zA-Z_]\w*$/) {
1.230 albertel 2137: &Apache::lonxml::debug("doing second");
2138: my @result=&Apache::run::run("return $value",$safeeval,1);
2139: if (!defined($result[0])) {
2140: return $value
2141: } else {
2142: if (wantarray) { return @result; } else { return $result[0]; }
2143: }
1.132 albertel 2144: } else {
2145: return $value;
2146: }
2147: }
2148:
1.438 albertel 2149: sub register_insert_xml {
2150: my $parser = HTML::LCParser->new($Apache::lonnet::perlvar{'lonTabDir'}
2151: .'/insertlist.xml');
2152: my ($tagnum,$in_help)=(0,0);
1.442 albertel 2153: my @alltags;
1.438 albertel 2154: my $tag;
2155: while (my $token = $parser->get_token()) {
2156: if ($token->[0] eq 'S') {
2157: my $key;
2158: if ($token->[1] eq 'tag') {
2159: $tag = $token->[2]{'name'};
2160: $insertlist{"$tagnum.tag"} = $tag;
2161: $insertlist{"$tag.num"} = $tagnum;
1.442 albertel 2162: push(@alltags,$tag);
1.438 albertel 2163: } elsif ($in_help && $token->[1] eq 'file') {
2164: $key = $tag.'.helpfile';
2165: } elsif ($in_help && $token->[1] eq 'description') {
2166: $key = $tag.'.helpdesc';
2167: } elsif ($token->[1] eq 'description' ||
2168: $token->[1] eq 'color' ||
2169: $token->[1] eq 'show' ) {
2170: $key = $tag.'.'.$token->[1];
2171: } elsif ($token->[1] eq 'insert_sub') {
2172: $key = $tag.'.function';
2173: } elsif ($token->[1] eq 'help') {
2174: $in_help=1;
2175: } elsif ($token->[1] eq 'allow') {
1.442 albertel 2176: $key = $tag.'.allow';
1.438 albertel 2177: }
2178: if (defined($key)) {
2179: $insertlist{$key} = $parser->get_text();
2180: $insertlist{$key} =~ s/(^\s*|\s*$ )//gx;
2181: }
2182: } elsif ($token->[0] eq 'E') {
2183: if ($token->[1] eq 'tag') {
2184: undef($tag);
2185: $tagnum++;
2186: } elsif ($token->[1] eq 'help') {
2187: undef($in_help);
2188: }
2189: }
2190: }
1.442 albertel 2191:
2192: # parse the allows and ignore tags set to <show>no</show>
2193: foreach my $tag (@alltags) {
1.445 albertel 2194: next if (!exists($insertlist{"$tag.allow"}));
1.442 albertel 2195: my $allow = $insertlist{"$tag.allow"};
2196: foreach my $element (split(',',$allow)) {
2197: $element =~ s/(^\s*|\s*$ )//gx;
1.446 albertel 2198: if (!exists($insertlist{"$element.show"})
2199: || $insertlist{"$element.show"} ne 'no') {
1.442 albertel 2200: push(@{ $insertlist{$tag.'.which'} },$element);
2201: }
2202: }
2203: }
1.438 albertel 2204: }
2205:
2206: sub register_insert {
2207: return ®ister_insert_xml(@_);
2208: # &dump_insertlist('2');
2209: }
2210:
2211: sub dump_insertlist {
2212: my ($ext) = @_;
2213: open(XML,">/tmp/insertlist.xml.$ext");
2214: print XML ("<insertlist>");
2215: my $i=0;
2216:
2217: while (exists($insertlist{"$i.tag"})) {
2218: my $tag = $insertlist{"$i.tag"};
2219: print XML ("
2220: \t<tag name=\"$tag\">");
2221: if (defined($insertlist{"$tag.description"})) {
2222: print XML ("
2223: \t\t<description>".$insertlist{"$tag.description"}."</description>");
2224: }
2225: if (defined($insertlist{"$tag.color"})) {
2226: print XML ("
2227: \t\t<color>".$insertlist{"$tag.color"}."</color>");
2228: }
2229: if (defined($insertlist{"$tag.function"})) {
2230: print XML ("
2231: \t\t<insert_sub>".$insertlist{"$tag.function"}."</insert_sub>");
2232: }
2233: if (defined($insertlist{"$tag.show"})
2234: && $insertlist{"$tag.show"} ne 'yes') {
2235: print XML ("
2236: \t\t<show>".$insertlist{"$tag.show"}."</show>");
2237: }
2238: if (defined($insertlist{"$tag.helpfile"})) {
2239: print XML ("
2240: \t\t<help>
2241: \t\t\t<file>".$insertlist{"$tag.helpfile"}."</file>");
2242: if ($insertlist{"$tag.helpdesc"} ne '') {
2243: print XML ("
2244: \t\t\t<description>".$insertlist{"$tag.helpdesc"}."</description>");
2245: }
2246: print XML ("
2247: \t\t</help>");
2248: }
2249: if (defined($insertlist{"$tag.which"})) {
2250: print XML ("
2251: \t\t<allow>".join(',',sort(@{ $insertlist{"$tag.which"} }))."</allow>");
2252: }
2253: print XML ("
2254: \t</tag>");
2255: $i++;
2256: }
2257: print XML ("\n</insertlist>\n");
2258: close(XML);
2259: }
2260:
1.98 albertel 2261: sub description {
1.437 albertel 2262: my ($token)=@_;
2263: my $tag = &get_tag($token);
2264: return $insertlist{$tag.'.description'};
1.268 bowersj2 2265: }
2266:
2267: # Returns a list containing the help file, and the description
2268: sub helpinfo {
1.437 albertel 2269: my ($token)=@_;
2270: my $tag = &get_tag($token);
2271: return ($insertlist{$tag.'.helpfile'}, $insertlist{$tag.'.helpdesc'});
2272: }
2273:
2274: sub get_tag {
2275: my ($token)=@_;
2276: my $tagnum;
2277: my $tag=$token->[1];
2278: foreach my $namespace (reverse(@Apache::lonxml::namespace)) {
2279: my $testtag = $namespace.'::'.$tag;
2280: $tagnum = $insertlist{"$testtag.num"};
2281: last if (defined($tagnum));
2282: }
2283: if (!defined($tagnum)) {
2284: $tagnum = $Apache::lonxml::insertlist{"$tag.num"};
2285: }
2286: return $insertlist{"$tagnum.tag"};
1.98 albertel 2287: }
1.123 albertel 2288:
1.485 onken 2289: ############################################################
2290: # PDF-FORM-METHODS
2291:
2292: =pod
2293:
2294: =item &print_pdf_radiobutton(fieldname, value, text)
2295:
2296: Returns a latexline to generate a PDF-Form-Radiobutton with Text.
2297:
2298: $fieldname: PDF internalname of the radiobutton
2299: $value: Value of radiobutton (read when dumping the PDF data)
2300: $text: Text on the rightside of the radiobutton
2301:
2302: =cut
2303: sub print_pdf_radiobutton {
2304: my $result = '';
2305: my ($fieldName, $value, $text) = @_;
2306: $result .= '\begin{tabularx}{\textwidth}{p{0cm}X}'."\n";
2307: $result .= '\radioButton[\symbolchoice{circle}]{'.
2308: $fieldName.'}{10bp}{10bp}{'.$value.'}&'.$text."\n";
2309: $result .= '\end{tabularx}' . "\n";
2310: $result .= '\hspace{2mm}' . "\n";
2311: return $result;
2312: }
2313:
2314:
2315: =pod
2316:
2317: =item &print_pdf_start_combobox(fieldname)
2318:
2319: Starts a latexline to generate a PDF-Form-Combobox with text.
2320:
2321: $fieldname: PDF internal name of the Combobox
2322:
2323: =cut
2324: sub print_pdf_start_combobox {
2325: my $result;
2326: my ($fieldName) = @_;
2327: $result .= '\begin{tabularx}{\textwidth}{p{2.5cm}X}'."\n";
2328: $result .= '\comboBox[]{'.$fieldName.'}{2.3cm}{14bp}{'; #
2329:
2330: return $result;
2331: }
2332:
2333:
2334: =pod
2335:
2336: =item &print_pdf_add_combobox_option(options)
2337:
2338: Generates a latexline to add Options to a PDF-Form-ComboBox.
2339:
2340: $option: PDF internal name of the Combobox-Option
2341:
2342: =cut
2343: sub print_pdf_add_combobox_option {
2344:
2345: my $result;
2346: my ($option) = @_;
2347:
2348: $result .= '('.$option.')';
2349:
2350: return $result;
2351: }
2352:
2353:
2354: =pod
2355:
2356: =item &print_pdf_end_combobox(text) {
2357:
2358: Returns latexcode to end a PDF-Form-Combobox with text.
2359:
2360: =cut
2361: sub print_pdf_end_combobox {
2362: my $result;
2363: my ($text) = @_;
2364:
2365: $result .= '}&'.$text."\\\\\n";
2366: $result .= '\end{tabularx}' . "\n";
2367: $result .= '\hspace{2mm}' . "\n";
2368: return $result;
2369: }
2370:
2371:
2372: =pod
2373:
2374: =item &print_pdf_hiddenField(fieldname, user, domain)
2375:
2376: Returns a latexline to generate a PDF-Form-hiddenField with userdata.
2377:
2378: $fieldname label for hiddentextfield
2379: $user: name of user
2380: $domain: domain of user
2381:
2382: =cut
2383: sub print_pdf_hiddenfield {
2384: my $result;
2385: my ($fieldname, $user, $domain) = @_;
2386:
2387: $result .= '\textField [\F{\FHidden}\F{-\FPrint}\V{'.$domain.'&'.$user.'}]{'.$fieldname.'}{0in}{0in}'."\n";
2388:
2389: return $result;
2390: }
2391:
1.1 sakharuk 2392: 1;
2393: __END__
1.68 www 2394:
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