Annotation of loncom/xml/lonxml.pm, revision 1.484
1.2 sakharuk 1: # The LearningOnline Network with CAPA
1.3 sakharuk 2: # XML Parser Module
1.2 sakharuk 3: #
1.484 ! bisitz 4: # $Id: lonxml.pm,v 1.483 2008/08/07 10:19:26 bisitz Exp $
1.139 www 5: #
6: # Copyright Michigan State University Board of Trustees
7: #
8: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
9: #
10: # LON-CAPA is free software; you can redistribute it and/or modify
11: # it under the terms of the GNU General Public License as published by
12: # the Free Software Foundation; either version 2 of the License, or
13: # (at your option) any later version.
14: #
15: # LON-CAPA is distributed in the hope that it will be useful,
16: # but WITHOUT ANY WARRANTY; without even the implied warranty of
17: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18: # GNU General Public License for more details.
19: #
20: # You should have received a copy of the GNU General Public License
21: # along with LON-CAPA; if not, write to the Free Software
22: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23: #
24: # /home/httpd/html/adm/gpl.txt
25: #
26: # http://www.lon-capa.org/
27: #
28: # Copyright for TtHfunc and TtMfunc by Ian Hutchinson.
29: # TtHfunc and TtMfunc (the "Code") may be compiled and linked into
30: # binary executable programs or libraries distributed by the
31: # Michigan State University (the "Licensee"), but any binaries so
32: # distributed are hereby licensed only for use in the context
33: # of a program or computational system for which the Licensee is the
34: # primary author or distributor, and which performs substantial
35: # additional tasks beyond the translation of (La)TeX into HTML.
36: # The C source of the Code may not be distributed by the Licensee
37: # to any other parties under any circumstances.
38: #
1.316 albertel 39:
1.2 sakharuk 40:
1.4 albertel 41: package Apache::lonxml;
1.33 www 42: use vars
1.410 albertel 43: qw(@pwd @outputstack $redirection $import @extlinks $metamode $evaluate %insertlist @namespace $errorcount $warningcount);
1.1 sakharuk 44: use strict;
1.444 albertel 45: use LONCAPA;
1.167 albertel 46: use HTML::LCParser();
1.161 albertel 47: use HTML::TreeBuilder();
48: use HTML::Entities();
49: use Safe();
50: use Safe::Hole();
51: use Math::Cephes();
52: use Math::Random();
53: use Opcode();
1.271 www 54: use POSIX qw(strftime);
1.339 albertel 55: use Time::HiRes qw( gettimeofday tv_interval );
1.393 albertel 56: use Symbol();
1.266 bowersj2 57:
1.72 albertel 58: sub register {
1.141 albertel 59: my ($space,@taglist) = @_;
60: foreach my $temptag (@taglist) {
61: push(@{ $Apache::lonxml::alltags{$temptag} },$space);
1.72 albertel 62: }
63: }
64:
1.141 albertel 65: sub deregister {
66: my ($space,@taglist) = @_;
67: foreach my $temptag (@taglist) {
68: my $tempspace = $Apache::lonxml::alltags{$temptag}[-1];
69: if ($tempspace eq $space) {
70: pop(@{ $Apache::lonxml::alltags{$temptag} });
71: }
72: }
1.142 albertel 73: #&printalltags();
1.141 albertel 74: }
75:
1.46 www 76: use Apache::Constants qw(:common);
1.161 albertel 77: use Apache::lontexconvert();
78: use Apache::style();
79: use Apache::run();
80: use Apache::londefdef();
81: use Apache::scripttag();
1.285 www 82: use Apache::languagetags();
1.161 albertel 83: use Apache::edit();
1.266 bowersj2 84: use Apache::inputtags();
85: use Apache::outputtags();
1.372 albertel 86: use Apache::lonnet;
1.161 albertel 87: use Apache::File();
88: use Apache::loncommon();
1.198 www 89: use Apache::lonfeedback();
1.200 www 90: use Apache::lonmsg();
1.217 matthew 91: use Apache::loncacc();
1.431 www 92: use Apache::lonmaxima();
1.280 www 93: use Apache::lonlocal;
1.79 www 94:
1.462 foxr 95: #==================================== Main subroutine: xmlparse
96:
1.72 albertel 97: #debugging control, to turn on debugging modify the correct handler
1.462 foxr 98:
1.72 albertel 99: $Apache::lonxml::debug=0;
1.206 albertel 100:
101: # keeps count of the number of warnings and errors generated in a parse
102: $warningcount=0;
103: $errorcount=0;
1.72 albertel 104:
105: #path to the directory containing the file currently being processed
106: @pwd=();
107:
108: #these two are used for capturing a subset of the output for later processing,
109: #don't touch them directly use &startredirection and &endredirection
110: @outputstack = ();
111: $redirection = 0;
112:
113: #controls wheter the <import> tag actually does
114: $import = 1;
115: @extlinks=();
116:
117: # meta mode is a bit weird only some output is to be turned off
118: #<output> tag turns metamode off (defined in londefdef.pm)
119: $metamode = 0;
120:
121: # turns on and of run::evaluate actually derefencing var refs
122: $evaluate = 1;
1.7 albertel 123:
1.74 albertel 124: # data structure for eidt mode, determines what tags can go into what other tags
125: %insertlist=();
1.68 www 126:
1.99 albertel 127: # stores the list of active tag namespaces
1.76 albertel 128: @namespace=();
129:
1.448 albertel 130: # stores all Scrit Vars displays for later showing
131: my @script_var_displays=();
132:
1.172 albertel 133: # a pointer the the Apache request object
134: $Apache::lonxml::request='';
135:
1.216 sakharuk 136: # a problem number counter, and check on ether it is used
1.237 sakharuk 137: $Apache::lonxml::counter=1;
1.204 albertel 138: $Apache::lonxml::counter_changed=0;
139:
1.462 foxr 140: # Part counter hash. In analysis mode, the
141: # problems can use this to record which parts increment the counter
142: # by how much. The counter subs will maintain this hash via
143: # their optional part parameters. Note that the assumption is that
144: # analysis is done in one request and therefore it is not necessary to
145: # save this information request-to-request.
146:
147:
148: %Apache::lonxml::counters_per_part = ();
149:
1.212 albertel 150: #internal check on whether to look at style defs
151: $Apache::lonxml::usestyle=1;
1.260 albertel 152:
153: #locations used to store the parameter string for style substitutions
154: $Apache::lonxml::style_values='';
155: $Apache::lonxml::style_end_values='';
1.212 albertel 156:
1.281 albertel 157: #array of ssi calls that need to occur after we are done parsing
158: @Apache::lonxml::ssi_info=();
159:
1.282 albertel 160: #should we do the postag variable interpolation
161: $Apache::lonxml::post_evaluate=1;
162:
1.295 albertel 163: #a header message to emit in the case of any generated warning or errors
164: $Apache::lonxml::warnings_error_header='';
165:
1.396 foxr 166: # Control whether or not LaTeX symbols should be substituted for their
167: # \ style equivalents...this may be turned off e.g. in an verbatim
168: # environment.
169:
170: $Apache::lonxml::substitute_LaTeX_symbols = 1; # Starts out on.
171:
172: sub enable_LaTeX_substitutions {
173: $Apache::lonxml::substitute_LaTeX_symbols = 1;
174: }
175: sub disable_LaTeX_substitutions {
176: $Apache::lonxml::substitute_LaTeX_symbols = 0;
177: }
178:
1.68 www 179: sub xmlend {
1.335 sakharuk 180: my ($target,$parser)=@_;
1.278 www 181: my $mode='xml';
182: my $status='OPEN';
1.368 albertel 183: if ($Apache::lonhomework::parsing_a_problem ||
184: $Apache::lonhomework::parsing_a_task ) {
1.278 www 185: $mode='problem';
186: $status=$Apache::inputtags::status[-1];
187: }
1.362 matthew 188: my $discussion;
1.379 albertel 189: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
190: ['LONCAPA_INTERNAL_no_discussion']);
1.372 albertel 191: if (! exists($env{'form.LONCAPA_INTERNAL_no_discussion'}) ||
192: $env{'form.LONCAPA_INTERNAL_no_discussion'} ne 'true') {
1.362 matthew 193: $discussion=&Apache::lonfeedback::list_discussion($mode,$status);
194: }
1.334 sakharuk 195: if ($target eq 'tex') {
1.335 sakharuk 196: $discussion.='<tex>\keephidden{ENDOFPROBLEM}\vskip 0.5mm\noindent\makebox[\textwidth/$number_of_columns][b]{\hrulefill}\end{document}</tex>';
1.334 sakharuk 197: &Apache::lonxml::newparser($parser,\$discussion,'');
198: return '';
199: }
1.405 albertel 200:
1.407 albertel 201: return $discussion;
1.119 www 202: }
203:
204: sub tokeninputfield {
1.120 www 205: my $defhost=$Apache::lonnet::perlvar{'lonHostID'};
206: $defhost=~tr/a-z/A-Z/;
1.119 www 207: return (<<ENDINPUTFIELD)
1.226 albertel 208: <script type="text/javascript">
1.120 www 209: function updatetoken() {
210: var comp=new Array;
211: var barcode=unescape(document.tokeninput.barcode.value);
212: comp=barcode.split('*');
213: if (typeof(comp[0])!="undefined") {
214: document.tokeninput.codeone.value=comp[0];
215: }
216: if (typeof(comp[1])!="undefined") {
217: document.tokeninput.codetwo.value=comp[1];
218: }
219: if (typeof(comp[2])!="undefined") {
220: comp[2]=comp[2].toUpperCase();
221: document.tokeninput.codethree.value=comp[2];
222: }
223: document.tokeninput.barcode.value='';
224: }
225: </script>
226: <form method="post" name="tokeninput">
1.119 www 227: <table border="2" bgcolor="#FFFFBB">
228: <tr><th>DocID Checkin</th></tr>
229: <tr><td>
230: <table>
231: <tr>
232: <td>Scan in Barcode</td>
1.120 www 233: <td><input type="text" size="22" name="barcode"
234: onChange="updatetoken()"/></td>
1.119 www 235: </tr>
236: <tr><td><i>or</i> Type in DocID</td>
237: <td>
238: <input type="text" size="5" name="codeone" />
1.120 www 239: <b><font size="+2">*</font></b>
1.119 www 240: <input type="text" size="5" name="codetwo" />
1.120 www 241: <b><font size="+2">*</font></b>
242: <input type="text" size="10" name="codethree" value="$defhost"
243: onChange="this.value=this.value.toUpperCase()" />
1.119 www 244: </td></tr>
245: </table>
246: </td></tr>
247: <tr><td><input type="submit" value="Check in DocID" /></td></tr>
248: </table>
249: </form>
250: ENDINPUTFIELD
1.112 www 251: }
252:
1.116 www 253: sub maketoken {
1.118 www 254: my ($symb,$tuname,$tudom,$tcrsid)=@_;
1.112 www 255: unless ($symb) {
256: $symb=&Apache::lonnet::symbread();
257: }
258: unless ($tuname) {
1.372 albertel 259: $tuname=$env{'user.name'};
260: $tudom=$env{'user.domain'};
261: $tcrsid=$env{'request.course.id'};
1.112 www 262: }
1.116 www 263:
1.118 www 264: return &Apache::lonnet::checkout($symb,$tuname,$tudom,$tcrsid);
265: }
266:
267: sub printtokenheader {
1.133 albertel 268: my ($target,$token,$tsymb,$tcrsid,$tudom,$tuname)=@_;
1.116 www 269: unless ($token) { return ''; }
1.118 www 270:
1.423 albertel 271: my ($symb,$courseid,$domain,$name) = &Apache::lonnet::whichuser();
1.133 albertel 272: unless ($tsymb) {
273: $tsymb=$symb;
1.118 www 274: }
275: unless ($tuname) {
1.133 albertel 276: $tuname=$name;
277: $tudom=$domain;
278: $tcrsid=$courseid;
1.118 www 279: }
1.114 www 280:
1.390 albertel 281: my $plainname=&Apache::loncommon::plainname($tuname,$tudom);
1.114 www 282:
1.112 www 283: if ($target eq 'web') {
1.145 www 284: my %idhash=&Apache::lonnet::idrget($tudom,($tuname));
1.115 www 285: return
1.221 albertel 286: '<img align="right" src="/cgi-bin/barcode.png?encode='.$token.'" />'.
1.284 www 287: &mt('Checked out for').' '.$plainname.
288: '<br />'.&mt('User').': '.$tuname.' at '.$tudom.
289: '<br />'.&mt('ID').': '.$idhash{$tuname}.
290: '<br />'.&mt('CourseID').': '.$tcrsid.
1.372 albertel 291: '<br />'.&mt('Course').': '.$env{'course.'.$tcrsid.'.description'}.
1.284 www 292: '<br />'.&mt('DocID').': '.$token.
293: '<br />'.&mt('Time').': '.&Apache::lonlocal::locallocaltime().'<hr />';
1.112 www 294: } else {
1.121 albertel 295: return $token;
1.112 www 296: }
1.68 www 297: }
298:
1.48 albertel 299: sub printalltags {
300: my $temp;
301: foreach $temp (sort keys %Apache::lonxml::alltags) {
1.141 albertel 302: &Apache::lonxml::debug("$temp -- ".
303: join(',',@{ $Apache::lonxml::alltags{$temp} }));
1.48 albertel 304: }
305: }
1.31 sakharuk 306:
1.3 sakharuk 307: sub xmlparse {
1.172 albertel 308: my ($request,$target,$content_file_string,$safeinit,%style_for_target) = @_;
1.96 albertel 309:
1.172 albertel 310: &setup_globals($request,$target);
1.232 albertel 311: &Apache::inputtags::initialize_inputtags();
1.370 albertel 312: &Apache::bridgetask::initialize_bridgetask();
1.232 albertel 313: &Apache::outputtags::initialize_outputtags();
314: &Apache::edit::initialize_edit();
1.287 albertel 315: &Apache::londefdef::initialize_londefdef();
1.244 albertel 316:
1.178 www 317: #
318: # do we have a course style file?
319: #
320:
1.372 albertel 321: if ($env{'request.course.id'} && $env{'request.state'} ne 'construct') {
1.178 www 322: my $bodytext=
1.372 albertel 323: $env{'course.'.$env{'request.course.id'}.'.default_xml_style'};
1.178 www 324: if ($bodytext) {
1.337 albertel 325: foreach my $file (split(',',$bodytext)) {
326: my $location=&Apache::lonnet::filelocation('',$file);
327: my $styletext=&Apache::lonnet::getfile($location);
328: if ($styletext ne '-1') {
329: %style_for_target = (%style_for_target,
330: &Apache::style::styleparser($target,$styletext));
331: }
332: }
333: }
1.449 albertel 334: } elsif ($env{'construct.style'}
335: && ($env{'request.state'} eq 'construct')) {
1.372 albertel 336: my $location=&Apache::lonnet::filelocation('',$env{'construct.style'});
1.291 sakharuk 337: my $styletext=&Apache::lonnet::getfile($location);
1.449 albertel 338: if ($styletext ne '-1') {
339: %style_for_target = (%style_for_target,
340: &Apache::style::styleparser($target,$styletext));
341: }
1.178 www 342: }
1.255 sakharuk 343: #&printalltags();
1.16 albertel 344: my @pars = ();
1.372 albertel 345: my $pwd=$env{'request.filename'};
1.23 albertel 346: $pwd =~ s:/[^/]*$::;
347: &newparser(\@pars,\$content_file_string,$pwd);
1.24 sakharuk 348:
1.3 sakharuk 349: my $safeeval = new Safe;
1.40 albertel 350: my $safehole = new Safe::Hole;
1.82 ng 351: &init_safespace($target,$safeeval,$safehole,$safeinit);
1.3 sakharuk 352: #-------------------- Redefinition of the target in the case of compound target
353:
354: ($target, my @tenta) = split('&&',$target);
355:
1.150 albertel 356: my @stack = ();
1.3 sakharuk 357: my @parstack = ();
1.358 albertel 358: &initdepth();
359: &init_alarm();
1.101 albertel 360: my $finaloutput = &inner_xmlparse($target,\@stack,\@parstack,\@pars,
1.394 albertel 361: $safeeval,\%style_for_target,1);
1.255 sakharuk 362:
1.425 albertel 363: if (@stack) {
1.482 bisitz 364: &warning(&mt('At end of file some tags were still left unclosed:').
365: ' <tt><'.join('></tt>, <tt><',reverse(@stack)).
1.425 albertel 366: '></tt>');
367: }
1.372 albertel 368: if ($env{'request.uri'}) {
369: &writeallows($env{'request.uri'});
1.125 www 370: }
1.281 albertel 371: &do_registered_ssi();
1.204 albertel 372: if ($Apache::lonxml::counter_changed) { &store_counter() }
1.393 albertel 373:
374: &clean_safespace($safeeval);
375:
1.448 albertel 376: if (@script_var_displays) {
377: $finaloutput .= join('',@script_var_displays);
378: undef(@script_var_displays);
379: }
1.469 albertel 380: &init_state();
1.372 albertel 381: if ($env{'form.return_only_error_and_warning_counts'}) {
1.473 www 382: if ($env{'request.filename'}=~/\.(html|htm|xml)$/i) {
383: my $error=&verify_html($content_file_string);
384: if ($error) { $errorcount++; }
385: }
1.361 www 386: return "$errorcount:$warningcount";
387: }
1.3 sakharuk 388: return $finaloutput;
1.106 www 389: }
390:
1.191 albertel 391: sub latex_special_symbols {
1.272 albertel 392: my ($string,$where)=@_;
1.396 foxr 393: #
394: # If e.g. in verbatim mode, then don't substitute.
395: # but return original string.
396: #
397: if (!($Apache::lonxml::substitute_LaTeX_symbols)) {
398: return $string;
399: }
1.235 sakharuk 400: if ($where eq 'header') {
1.414 foxr 401: $string =~ s/\\/\$\\backslash\$/g; # \ -> $\backslash$ per LaTex line by line pg 10.
1.311 albertel 402: $string =~ s/(\$|%|\{|\})/\\$1/g;
403: $string=&Apache::lonprintout::character_chart($string);
404: # any & or # leftover should be safe to just escape
405: $string=~s/([^\\])\&/$1\\\&/g;
406: $string=~s/([^\\])\#/$1\\\#/g;
1.415 foxr 407: $string =~ s/_/\\_/g; # _ -> \_
408: $string =~ s/\^/\\\^{}/g; # ^ -> \^{}
1.229 sakharuk 409: } else {
1.312 albertel 410: $string=~s/\\/\\ensuremath{\\backslash}/g;
1.367 albertel 411: $string=~s/\\\%|\%/\\\%/g;
412: $string=~s/\\{|{/\\{/g;
413: $string=~s/\\}|}/\\}/g;
1.378 albertel 414: $string=~s/\\ensuremath\\{\\backslash\\}/\\ensuremath{\\backslash}/g;
1.367 albertel 415: $string=~s/\\\$|\$/\\\$/g;
416: $string=~s/\\\_|\_/\\\_/g;
1.313 albertel 417: $string=~s/([^\\]|^)(\~|\^)/$1\\$2\\strut /g;
1.310 sakharuk 418: $string=~s/(>|<)/\\ensuremath\{$1\}/g; #more or less
1.311 albertel 419: $string=&Apache::lonprintout::character_chart($string);
420: # any & or # leftover should be safe to just escape
1.367 albertel 421: $string=~s/\\\&|\&/\\\&/g;
422: $string=~s/\\\#|\#/\\\#/g;
1.332 sakharuk 423: $string=~s/\|/\$\\mid\$/g;
1.310 sakharuk 424: #single { or } How to escape?
1.229 sakharuk 425: }
1.272 albertel 426: return $string;
1.188 sakharuk 427: }
428:
1.101 albertel 429: sub inner_xmlparse {
1.394 albertel 430: my ($target,$stack,$parstack,$pars,$safeeval,$style_for_target,$start)=@_;
1.101 albertel 431: my $finaloutput = '';
432: my $result;
433: my $token;
1.258 albertel 434: my $dontpop=0;
1.389 albertel 435: my $startredirection = $Apache::lonxml::redirection;
1.101 albertel 436: while ( $#$pars > -1 ) {
437: while ($token = $$pars['-1']->get_token) {
1.261 albertel 438: if (($token->[0] eq 'T') || ($token->[0] eq 'C') ) {
1.101 albertel 439: if ($metamode<1) {
1.190 albertel 440: my $text=$token->[1];
1.193 albertel 441: if ($token->[0] eq 'C' && $target eq 'tex') {
1.239 sakharuk 442: $text = '';
443: # $text = '%'.$text."\n";
1.182 sakharuk 444: }
1.190 albertel 445: $result.=$text;
1.101 albertel 446: }
1.261 albertel 447: } elsif (($token->[0] eq 'D')) {
448: if ($metamode<1 && $target eq 'web') {
449: my $text=$token->[1];
450: $result.=$text;
451: }
1.101 albertel 452: } elsif ($token->[0] eq 'PI') {
1.261 albertel 453: if ($metamode<1 && $target eq 'web') {
1.101 albertel 454: $result=$token->[2];
455: }
456: } elsif ($token->[0] eq 'S') {
1.140 albertel 457: # add tag to stack
1.101 albertel 458: push (@$stack,$token->[1]);
459: # add parameters list to another stack
460: push (@$parstack,&parstring($token));
1.140 albertel 461: &increasedepth($token);
1.212 albertel 462: if ($Apache::lonxml::usestyle &&
463: exists($$style_for_target{$token->[1]})) {
464: $Apache::lonxml::usestyle=0;
465: my $string=$$style_for_target{$token->[1]}.
466: '<LONCAPA_INTERNAL_TURN_STYLE_ON />';
467: &Apache::lonxml::newparser($pars,\$string);
1.257 albertel 468: $Apache::lonxml::style_values=$$parstack[-1];
1.259 albertel 469: $Apache::lonxml::style_end_values=$$parstack[-1];
1.101 albertel 470: } else {
471: $result = &callsub("start_$token->[1]", $target, $token, $stack,
472: $parstack, $pars, $safeeval, $style_for_target);
1.140 albertel 473: }
1.101 albertel 474: } elsif ($token->[0] eq 'E') {
1.212 albertel 475: if ($Apache::lonxml::usestyle &&
476: exists($$style_for_target{'/'."$token->[1]"})) {
477: $Apache::lonxml::usestyle=0;
478: my $string=$$style_for_target{'/'.$token->[1]}.
1.258 albertel 479: '<LONCAPA_INTERNAL_TURN_STYLE_ON end="'.$token->[1].'" />';
1.212 albertel 480: &Apache::lonxml::newparser($pars,\$string);
1.259 albertel 481: $Apache::lonxml::style_values=$Apache::lonxml::style_end_values;
482: $Apache::lonxml::style_end_values='';
1.258 albertel 483: $dontpop=1;
1.101 albertel 484: } else {
1.258 albertel 485: #clear out any tags that didn't end
486: while ($token->[1] ne $$stack['-1'] && ($#$stack > -1)) {
487: my $lasttag=$$stack[-1];
1.317 albertel 488: if ($token->[1] =~ /^\Q$lasttag\E$/i) {
1.483 bisitz 489: &Apache::lonxml::warning(&mt('Using tag [_1] on line [_2] as end tag to [_3]','</'.$token->[1].'>','.$token->[3].','<'.$$stack[-1].'>'));
1.258 albertel 490: last;
491: } else {
1.483 bisitz 492: &Apache::lonxml::warning(&mt('Found tag [_1] on line [_2] when looking for [_3] in file.','</'.$token->[1].'>',$token->[3],'</'.$$stack[-1].'>'));
1.258 albertel 493: &end_tag($stack,$parstack,$token);
494: }
495: }
496: $result = &callsub("end_$token->[1]", $target, $token, $stack,
497: $parstack, $pars,$safeeval, $style_for_target);
1.101 albertel 498: }
499: } else {
500: &Apache::lonxml::error("Unknown token event :$token->[0]:$token->[1]:");
501: }
502: #evaluate variable refs in result
1.282 albertel 503: if ($Apache::lonxml::post_evaluate &&$result ne "") {
1.257 albertel 504: my $extras;
505: if (!$Apache::lonxml::usestyle) {
506: $extras=$Apache::lonxml::style_values;
507: }
1.101 albertel 508: if ( $#$parstack > -1 ) {
1.257 albertel 509: $result=&Apache::run::evaluate($result,$safeeval,$extras.$$parstack[-1]);
1.101 albertel 510: } else {
1.257 albertel 511: $result= &Apache::run::evaluate($result,$safeeval,$extras);
1.101 albertel 512: }
1.163 albertel 513: }
1.282 albertel 514: $Apache::lonxml::post_evaluate=1;
515:
1.190 albertel 516: if (($token->[0] eq 'T') || ($token->[0] eq 'C') || ($token->[0] eq 'D') ) {
1.249 albertel 517: #Style file definitions should be correct
1.250 albertel 518: if ($target eq 'tex' && ($Apache::lonxml::usestyle)) {
1.311 albertel 519: $result=&latex_special_symbols($result);
1.249 albertel 520: }
1.190 albertel 521: }
522:
1.169 albertel 523: if ($Apache::lonxml::redirection) {
524: $Apache::lonxml::outputstack['-1'] .= $result;
525: } else {
526: $finaloutput.=$result;
527: }
528: $result = '';
529:
1.258 albertel 530: if ($token->[0] eq 'E' && !$dontpop) {
1.101 albertel 531: &end_tag($stack,$parstack,$token);
532: }
1.258 albertel 533: $dontpop=0;
1.224 albertel 534: }
1.212 albertel 535: if ($#$pars > -1) {
536: pop @$pars;
537: pop @Apache::lonxml::pwd;
538: }
1.101 albertel 539: }
540:
541: # if ($target eq 'meta') {
542: # $finaloutput.=&endredirection;
543: # }
544:
1.394 albertel 545: if ( $start && $target eq 'grade') { &endredirection(); }
1.389 albertel 546: if ( $Apache::lonxml::redirection > $startredirection) {
547: while ($Apache::lonxml::redirection > $startredirection) {
548: $finaloutput .= &endredirection();
1.387 albertel 549: }
550: }
1.101 albertel 551: if (($ENV{'QUERY_STRING'}) && ($target eq 'web')) {
552: $finaloutput=&afterburn($finaloutput);
1.216 sakharuk 553: }
1.101 albertel 554: return $finaloutput;
555: }
1.67 www 556:
1.318 matthew 557: ##
558: ## Looks to see if there is a subroutine defined for this tag. If so, call it,
559: ## otherwise do not call it as we do not know what it is.
560: ##
1.7 albertel 561: sub callsub {
1.84 albertel 562: my ($sub,$target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.7 albertel 563: my $currentstring='';
1.72 albertel 564: my $nodefault;
1.7 albertel 565: {
1.59 albertel 566: my $sub1;
1.7 albertel 567: no strict 'refs';
1.68 www 568: my $tag=$token->[1];
1.236 www 569: # get utterly rid of extended html tags
570: if ($tag=~/^x\-/i) { return ''; }
1.141 albertel 571: my $space=$Apache::lonxml::alltags{$tag}[-1];
1.68 www 572: if (!$space) {
1.141 albertel 573: $tag=~tr/A-Z/a-z/;
1.68 www 574: $sub=~tr/A-Z/a-z/;
1.141 albertel 575: $space=$Apache::lonxml::alltags{$tag}[-1]
1.68 www 576: }
1.97 albertel 577:
578: my $deleted=0;
579: if (($token->[0] eq 'S') && ($target eq 'modified')) {
580: $deleted=&Apache::edit::handle_delete($space,$target,$token,$tagstack,
581: $parstack,$parser,$safeeval,
582: $style);
583: }
584: if (!$deleted) {
585: if ($space) {
1.220 albertel 586: #&Apache::lonxml::debug("Calling sub $sub in $space $metamode");
1.97 albertel 587: $sub1="$space\:\:$sub";
588: ($currentstring,$nodefault) = &$sub1($target,$token,$tagstack,
589: $parstack,$parser,$safeeval,
590: $style);
591: } else {
1.318 matthew 592: if ($target eq 'tex') {
593: # throw away tag name
594: return '';
595: }
1.220 albertel 596: #&Apache::lonxml::debug("NOT Calling sub $sub in $space $metamode");
1.97 albertel 597: if ($metamode <1) {
598: if (defined($token->[4]) && ($metamode < 1)) {
599: $currentstring = $token->[4];
600: } else {
601: $currentstring = $token->[2];
602: }
1.62 sakharuk 603: }
1.7 albertel 604: }
1.97 albertel 605: # &Apache::lonxml::debug("nodefalt:$nodefault:");
606: if ($currentstring eq '' && $nodefault eq '') {
607: if ($target eq 'edit') {
1.220 albertel 608: #&Apache::lonxml::debug("doing default edit for $token->[1]");
1.97 albertel 609: if ($token->[0] eq 'S') {
610: $currentstring = &Apache::edit::tag_start($target,$token);
611: } elsif ($token->[0] eq 'E') {
612: $currentstring = &Apache::edit::tag_end($target,$token);
613: }
1.441 albertel 614: }
615: }
616: if ($target eq 'modified' && $nodefault eq '') {
617: if ($currentstring eq '') {
618: if ($token->[0] eq 'S') {
619: $currentstring = $token->[4];
620: } elsif ($token->[0] eq 'E') {
621: $currentstring = $token->[2];
622: } else {
623: $currentstring = $token->[2];
624: }
625: }
1.97 albertel 626: if ($token->[0] eq 'S') {
1.447 albertel 627: $currentstring.=&Apache::edit::handle_insert();
1.210 www 628: } elsif ($token->[0] eq 'E') {
1.447 albertel 629: $currentstring.=&Apache::edit::handle_insertafter($token->[1]);
1.97 albertel 630: }
1.72 albertel 631: }
1.7 albertel 632: }
633: use strict 'refs';
634: }
635: return $currentstring;
1.82 ng 636: }
637:
1.465 albertel 638: {
639: my %state;
640:
641: sub init_state {
642: undef(%state);
643: }
644:
645: sub set_state {
646: my ($key,$value) = @_;
647: $state{$key} = $value;
648: return $value;
649: }
650: sub get_state {
651: my ($key) = @_;
652: return $state{$key};
653: }
654: }
655:
1.96 albertel 656: sub setup_globals {
1.172 albertel 657: my ($request,$target)=@_;
658: $Apache::lonxml::request=$request;
1.205 www 659: $errorcount=0;
660: $warningcount=0;
1.207 albertel 661: $Apache::lonxml::default_homework_loaded=0;
1.212 albertel 662: $Apache::lonxml::usestyle=1;
1.204 albertel 663: &init_counter();
1.462 foxr 664: &clear_bubble_lines_for_part();
1.465 albertel 665: &init_state();
1.469 albertel 666: &set_state('target',$target);
1.101 albertel 667: @Apache::lonxml::pwd=();
1.124 albertel 668: @Apache::lonxml::extlinks=();
1.448 albertel 669: @script_var_displays=();
1.281 albertel 670: @Apache::lonxml::ssi_info=();
1.282 albertel 671: $Apache::lonxml::post_evaluate=1;
1.295 albertel 672: $Apache::lonxml::warnings_error_header='';
1.397 albertel 673: $Apache::lonxml::substitute_LaTeX_symbols = 1;
1.96 albertel 674: if ($target eq 'meta') {
675: $Apache::lonxml::redirection = 0;
676: $Apache::lonxml::metamode = 1;
677: $Apache::lonxml::evaluate = 1;
678: $Apache::lonxml::import = 0;
1.129 albertel 679: } elsif ($target eq 'answer') {
680: $Apache::lonxml::redirection = 0;
681: $Apache::lonxml::metamode = 1;
682: $Apache::lonxml::evaluate = 1;
683: $Apache::lonxml::import = 1;
1.96 albertel 684: } elsif ($target eq 'grade') {
1.387 albertel 685: &startredirection(); #ended in inner_xmlparse on exit
1.96 albertel 686: $Apache::lonxml::metamode = 0;
687: $Apache::lonxml::evaluate = 1;
688: $Apache::lonxml::import = 1;
689: } elsif ($target eq 'modified') {
690: $Apache::lonxml::redirection = 0;
691: $Apache::lonxml::metamode = 0;
692: $Apache::lonxml::evaluate = 0;
693: $Apache::lonxml::import = 0;
694: } elsif ($target eq 'edit') {
695: $Apache::lonxml::redirection = 0;
696: $Apache::lonxml::metamode = 0;
697: $Apache::lonxml::evaluate = 0;
698: $Apache::lonxml::import = 0;
1.163 albertel 699: } elsif ($target eq 'analyze') {
700: $Apache::lonxml::redirection = 0;
701: $Apache::lonxml::metamode = 0;
702: $Apache::lonxml::evaluate = 1;
703: $Apache::lonxml::import = 1;
1.96 albertel 704: } else {
705: $Apache::lonxml::redirection = 0;
706: $Apache::lonxml::metamode = 0;
707: $Apache::lonxml::evaluate = 1;
708: $Apache::lonxml::import = 1;
709: }
710: }
711:
1.82 ng 712: sub init_safespace {
713: my ($target,$safeeval,$safehole,$safeinit) = @_;
1.393 albertel 714: $safeeval->deny_only(':dangerous');
715: $safeeval->reval('use Math::Complex;');
1.383 albertel 716: $safeeval->permit_only(":default");
1.82 ng 717: $safeeval->permit("entereval");
718: $safeeval->permit(":base_math");
719: $safeeval->permit("sort");
1.286 albertel 720: $safeeval->permit("time");
1.480 www 721: $safeeval->permit("caller");
1.371 albertel 722: $safeeval->deny("rand");
723: $safeeval->deny("srand");
1.82 ng 724: $safeeval->deny(":base_io");
1.102 albertel 725: $safehole->wrap(\&Apache::scripttag::xmlparse,$safeeval,'&xmlparse');
1.251 albertel 726: $safehole->wrap(\&Apache::outputtags::multipart,$safeeval,'&multipart');
1.82 ng 727: $safehole->wrap(\&Apache::lonnet::EXT,$safeeval,'&EXT');
1.324 albertel 728: $safehole->wrap(\&Apache::chemresponse::chem_standard_order,$safeeval,
729: '&chem_standard_order');
1.369 albertel 730: $safehole->wrap(\&Apache::response::check_status,$safeeval,'&check_status');
1.471 bisitz 731: $safehole->wrap(\&Apache::response::implicit_multiplication,$safeeval,'&implicit_multiplication');
1.324 albertel 732:
1.431 www 733: $safehole->wrap(\&Apache::lonmaxima::maxima_eval,$safeeval,'&maxima_eval');
1.432 www 734: $safehole->wrap(\&Apache::lonmaxima::maxima_check,$safeeval,'&maxima_check');
1.433 albertel 735: $safehole->wrap(\&Apache::lonmaxima::maxima_cas_formula_fix,$safeeval,
736: '&maxima_cas_formula_fix');
737:
738: $safehole->wrap(\&Apache::caparesponse::capa_formula_fix,$safeeval,
739: '&capa_formula_fix');
1.431 www 740:
1.480 www 741: $safehole->wrap(\&Apache::lonlocal::locallocaltime,$safeeval,
742: '&locallocaltime');
743:
1.82 ng 744: $safehole->wrap(\&Math::Cephes::asin,$safeeval,'&asin');
745: $safehole->wrap(\&Math::Cephes::acos,$safeeval,'&acos');
746: $safehole->wrap(\&Math::Cephes::atan,$safeeval,'&atan');
747: $safehole->wrap(\&Math::Cephes::sinh,$safeeval,'&sinh');
748: $safehole->wrap(\&Math::Cephes::cosh,$safeeval,'&cosh');
749: $safehole->wrap(\&Math::Cephes::tanh,$safeeval,'&tanh');
750: $safehole->wrap(\&Math::Cephes::asinh,$safeeval,'&asinh');
751: $safehole->wrap(\&Math::Cephes::acosh,$safeeval,'&acosh');
752: $safehole->wrap(\&Math::Cephes::atanh,$safeeval,'&atanh');
753: $safehole->wrap(\&Math::Cephes::erf,$safeeval,'&erf');
754: $safehole->wrap(\&Math::Cephes::erfc,$safeeval,'&erfc');
755: $safehole->wrap(\&Math::Cephes::j0,$safeeval,'&j0');
756: $safehole->wrap(\&Math::Cephes::j1,$safeeval,'&j1');
757: $safehole->wrap(\&Math::Cephes::jn,$safeeval,'&jn');
758: $safehole->wrap(\&Math::Cephes::jv,$safeeval,'&jv');
759: $safehole->wrap(\&Math::Cephes::y0,$safeeval,'&y0');
760: $safehole->wrap(\&Math::Cephes::y1,$safeeval,'&y1');
761: $safehole->wrap(\&Math::Cephes::yn,$safeeval,'&yn');
762: $safehole->wrap(\&Math::Cephes::yv,$safeeval,'&yv');
1.215 albertel 763:
764: $safehole->wrap(\&Math::Cephes::bdtr ,$safeeval,'&bdtr' );
765: $safehole->wrap(\&Math::Cephes::bdtrc ,$safeeval,'&bdtrc' );
766: $safehole->wrap(\&Math::Cephes::bdtri ,$safeeval,'&bdtri' );
767: $safehole->wrap(\&Math::Cephes::btdtr ,$safeeval,'&btdtr' );
768: $safehole->wrap(\&Math::Cephes::chdtr ,$safeeval,'&chdtr' );
769: $safehole->wrap(\&Math::Cephes::chdtrc,$safeeval,'&chdtrc');
770: $safehole->wrap(\&Math::Cephes::chdtri,$safeeval,'&chdtri');
771: $safehole->wrap(\&Math::Cephes::fdtr ,$safeeval,'&fdtr' );
772: $safehole->wrap(\&Math::Cephes::fdtrc ,$safeeval,'&fdtrc' );
773: $safehole->wrap(\&Math::Cephes::fdtri ,$safeeval,'&fdtri' );
774: $safehole->wrap(\&Math::Cephes::gdtr ,$safeeval,'&gdtr' );
775: $safehole->wrap(\&Math::Cephes::gdtrc ,$safeeval,'&gdtrc' );
776: $safehole->wrap(\&Math::Cephes::nbdtr ,$safeeval,'&nbdtr' );
777: $safehole->wrap(\&Math::Cephes::nbdtrc,$safeeval,'&nbdtrc');
778: $safehole->wrap(\&Math::Cephes::nbdtri,$safeeval,'&nbdtri');
779: $safehole->wrap(\&Math::Cephes::ndtr ,$safeeval,'&ndtr' );
780: $safehole->wrap(\&Math::Cephes::ndtri ,$safeeval,'&ndtri' );
781: $safehole->wrap(\&Math::Cephes::pdtr ,$safeeval,'&pdtr' );
782: $safehole->wrap(\&Math::Cephes::pdtrc ,$safeeval,'&pdtrc' );
783: $safehole->wrap(\&Math::Cephes::pdtri ,$safeeval,'&pdtri' );
784: $safehole->wrap(\&Math::Cephes::stdtr ,$safeeval,'&stdtr' );
785: $safehole->wrap(\&Math::Cephes::stdtri,$safeeval,'&stdtri');
786:
1.383 albertel 787: $safehole->wrap(\&Math::Cephes::Matrix::mat,$safeeval,'&mat');
788: $safehole->wrap(\&Math::Cephes::Matrix::new,$safeeval,
789: '&Math::Cephes::Matrix::new');
790: $safehole->wrap(\&Math::Cephes::Matrix::coef,$safeeval,
791: '&Math::Cephes::Matrix::coef');
792: $safehole->wrap(\&Math::Cephes::Matrix::clr,$safeeval,
793: '&Math::Cephes::Matrix::clr');
794: $safehole->wrap(\&Math::Cephes::Matrix::add,$safeeval,
795: '&Math::Cephes::Matrix::add');
796: $safehole->wrap(\&Math::Cephes::Matrix::sub,$safeeval,
797: '&Math::Cephes::Matrix::sub');
798: $safehole->wrap(\&Math::Cephes::Matrix::mul,$safeeval,
799: '&Math::Cephes::Matrix::mul');
800: $safehole->wrap(\&Math::Cephes::Matrix::div,$safeeval,
801: '&Math::Cephes::Matrix::div');
802: $safehole->wrap(\&Math::Cephes::Matrix::inv,$safeeval,
803: '&Math::Cephes::Matrix::inv');
804: $safehole->wrap(\&Math::Cephes::Matrix::transp,$safeeval,
805: '&Math::Cephes::Matrix::transp');
806: $safehole->wrap(\&Math::Cephes::Matrix::simq,$safeeval,
807: '&Math::Cephes::Matrix::simq');
808: $safehole->wrap(\&Math::Cephes::Matrix::mat_to_vec,$safeeval,
809: '&Math::Cephes::Matrix::mat_to_vec');
810: $safehole->wrap(\&Math::Cephes::Matrix::vec_to_mat,$safeeval,
811: '&Math::Cephes::Matrix::vec_to_mat');
812: $safehole->wrap(\&Math::Cephes::Matrix::check,$safeeval,
813: '&Math::Cephes::Matrix::check');
814: $safehole->wrap(\&Math::Cephes::Matrix::check,$safeeval,
815: '&Math::Cephes::Matrix::check');
816:
1.215 albertel 817: # $safehole->wrap(\&Math::Cephes::new_fract,$safeeval,'&new_fract');
818: # $safehole->wrap(\&Math::Cephes::radd,$safeeval,'&radd');
819: # $safehole->wrap(\&Math::Cephes::rsub,$safeeval,'&rsub');
820: # $safehole->wrap(\&Math::Cephes::rmul,$safeeval,'&rmul');
821: # $safehole->wrap(\&Math::Cephes::rdiv,$safeeval,'&rdiv');
822: # $safehole->wrap(\&Math::Cephes::euclid,$safeeval,'&euclid');
823:
1.91 ng 824: $safehole->wrap(\&Math::Random::random_beta,$safeeval,'&math_random_beta');
825: $safehole->wrap(\&Math::Random::random_chi_square,$safeeval,'&math_random_chi_square');
826: $safehole->wrap(\&Math::Random::random_exponential,$safeeval,'&math_random_exponential');
827: $safehole->wrap(\&Math::Random::random_f,$safeeval,'&math_random_f');
828: $safehole->wrap(\&Math::Random::random_gamma,$safeeval,'&math_random_gamma');
829: $safehole->wrap(\&Math::Random::random_multivariate_normal,$safeeval,'&math_random_multivariate_normal');
830: $safehole->wrap(\&Math::Random::random_multinomial,$safeeval,'&math_random_multinomial');
831: $safehole->wrap(\&Math::Random::random_noncentral_chi_square,$safeeval,'&math_random_noncentral_chi_square');
832: $safehole->wrap(\&Math::Random::random_noncentral_f,$safeeval,'&math_random_noncentral_f');
833: $safehole->wrap(\&Math::Random::random_normal,$safeeval,'&math_random_normal');
834: $safehole->wrap(\&Math::Random::random_permutation,$safeeval,'&math_random_permutation');
1.93 ng 835: $safehole->wrap(\&Math::Random::random_permuted_index,$safeeval,'&math_random_permuted_index');
1.91 ng 836: $safehole->wrap(\&Math::Random::random_uniform,$safeeval,'&math_random_uniform');
837: $safehole->wrap(\&Math::Random::random_poisson,$safeeval,'&math_random_poisson');
838: $safehole->wrap(\&Math::Random::random_uniform_integer,$safeeval,'&math_random_uniform_integer');
839: $safehole->wrap(\&Math::Random::random_negative_binomial,$safeeval,'&math_random_negative_binomial');
840: $safehole->wrap(\&Math::Random::random_binomial,$safeeval,'&math_random_binomial');
841: $safehole->wrap(\&Math::Random::random_seed_from_phrase,$safeeval,'&random_seed_from_phrase');
842: $safehole->wrap(\&Math::Random::random_set_seed_from_phrase,$safeeval,'&random_set_seed_from_phrase');
843: $safehole->wrap(\&Math::Random::random_get_seed,$safeeval,'&random_get_seed');
844: $safehole->wrap(\&Math::Random::random_set_seed,$safeeval,'&random_set_seed');
1.458 albertel 845: $safehole->wrap(\&Apache::loncommon::languages,$safeeval,'&languages');
1.305 albertel 846: $safehole->wrap(\&Apache::lonxml::error,$safeeval,'&LONCAPA_INTERNAL_ERROR');
1.311 albertel 847: $safehole->wrap(\&Apache::lonxml::debug,$safeeval,'&LONCAPA_INTERNAL_DEBUG');
1.420 albertel 848: $safehole->wrap(\&Apache::lonnet::logthis,$safeeval,'&LONCAPA_INTERNAL_LOGTHIS');
849: $safehole->wrap(\&Apache::inputtags::finalizeawards,$safeeval,'&LONCAPA_INTERNAL_FINALIZEAWARDS');
1.322 albertel 850: $safehole->wrap(\&Apache::caparesponse::get_sigrange,$safeeval,'&LONCAPA_INTERNAL_get_sigrange');
1.430 albertel 851: # use Data::Dumper;
852: # $safehole->wrap(\&Data::Dumper::Dumper,$safeeval,'&LONCAPA_INTERNAL_Dumper');
1.82 ng 853: #need to inspect this class of ops
854: # $safeeval->deny(":base_orig");
1.331 albertel 855: $safeeval->permit("require");
1.91 ng 856: $safeinit .= ';$external::target="'.$target.'";';
1.82 ng 857: &Apache::run::run($safeinit,$safeeval);
1.373 albertel 858: &initialize_rndseed($safeeval);
859: }
1.303 albertel 860:
1.393 albertel 861: sub clean_safespace {
862: my ($safeeval) = @_;
863: delete_package_recurse($safeeval->{Root});
864: }
865:
866: sub delete_package_recurse {
867: my ($package) = @_;
868: my @subp;
869: {
870: no strict 'refs';
871: while (my ($key,$val) = each(%{*{"$package\::"}})) {
872: if (!defined($val)) { next; }
873: local (*ENTRY) = $val;
874: if (defined *ENTRY{HASH} && $key =~ /::$/ &&
875: $key ne "main::" && $key ne "<none>::")
876: {
877: my ($p) = $package ne "main" ? "$package\::" : "";
878: ($p .= $key) =~ s/::$//;
879: push(@subp,$p);
880: }
881: }
882: }
883: foreach my $p (@subp) {
884: delete_package_recurse($p);
885: }
886: Symbol::delete_package($package);
887: }
888:
1.373 albertel 889: sub initialize_rndseed {
890: my ($safeeval)=@_;
891: my $rndseed;
1.423 albertel 892: my ($symb,$courseid,$domain,$name) = &Apache::lonnet::whichuser();
1.373 albertel 893: $rndseed=&Apache::lonnet::rndseed($symb,$courseid,$domain,$name);
894: my $safeinit = '$external::randomseed="'.$rndseed.'";';
895: &Apache::lonxml::debug("Setting rndseed to $rndseed");
896: &Apache::run::run($safeinit,$safeeval);
1.207 albertel 897: }
898:
899: sub default_homework_load {
900: my ($safeeval)=@_;
901: &Apache::lonxml::debug('Loading default_homework');
902: my $default=&Apache::lonnet::getfile('/home/httpd/html/res/adm/includes/default_homework.lcpm');
1.241 albertel 903: if ($default eq -1) {
1.207 albertel 904: &Apache::lonxml::error("<b>Unable to find <i>default_homework.lcpm</i></b>");
905: } else {
906: &Apache::run::run($default,$safeeval);
907: $Apache::lonxml::default_homework_loaded=1;
908: }
1.17 albertel 909: }
910:
1.358 albertel 911: {
912: my $alarm_depth;
913: sub init_alarm {
914: alarm(0);
915: $alarm_depth=0;
916: }
917:
918: sub start_alarm {
919: if ($alarm_depth<1) {
920: my $old=alarm($Apache::lonnet::perlvar{'lonScriptTimeout'});
921: if ($old) {
922: &Apache::lonxml::error("Cancelled an alarm of $old, this shouldn't occur.");
923: }
924: }
925: $alarm_depth++;
926: }
927:
928: sub end_alarm {
929: $alarm_depth--;
930: if ($alarm_depth<1) { alarm(0); }
931: }
932: }
1.328 albertel 933: my $metamode_was;
1.55 albertel 934: sub startredirection {
1.328 albertel 935: if (!$Apache::lonxml::redirection) {
936: $metamode_was=$Apache::lonxml::metamode;
937: }
938: $Apache::lonxml::metamode=0;
939: $Apache::lonxml::redirection++;
940: push (@Apache::lonxml::outputstack, '');
1.55 albertel 941: }
942:
943: sub endredirection {
1.328 albertel 944: if (!$Apache::lonxml::redirection) {
1.380 www 945: &Apache::lonxml::error("Endredirection was called before a startredirection, perhaps you have unbalanced tags. Some debugging information:".join ":",caller);
1.328 albertel 946: return '';
947: }
948: $Apache::lonxml::redirection--;
949: if (!$Apache::lonxml::redirection) {
950: $Apache::lonxml::metamode=$metamode_was;
951: }
952: pop @Apache::lonxml::outputstack;
1.97 albertel 953: }
1.459 albertel 954: sub in_redirection {
955: return ($Apache::lonxml::redirection > 0)
956: }
1.97 albertel 957:
958: sub end_tag {
959: my ($tagstack,$parstack,$token)=@_;
960: pop(@$tagstack);
961: pop(@$parstack);
962: &decreasedepth($token);
1.55 albertel 963: }
964:
1.17 albertel 965: sub initdepth {
966: @Apache::lonxml::depthcounter=();
1.439 albertel 967: undef($Apache::lonxml::last_depth_count);
1.17 albertel 968: }
969:
1.438 albertel 970:
1.339 albertel 971: my @timers;
972: my $lasttime;
1.438 albertel 973: # @Apache::lonxml::depthcounter -> count of tags that exist so
974: # far at each level
1.439 albertel 975: # $Apache::lonxml::last_depth_count -> when ascending, need to
976: # remember the count for the level below the current level (for
977: # example going from 1_2 -> 1 -> 1_3 need to remember the 2 )
1.438 albertel 978:
1.17 albertel 979: sub increasedepth {
1.19 albertel 980: my ($token) = @_;
1.439 albertel 981: push(@Apache::lonxml::depthcounter,$Apache::lonxml::last_depth_count+1);
982: undef($Apache::lonxml::last_depth_count);
1.340 albertel 983: my $time;
984: if ($Apache::lonxml::debug eq "1") {
985: push(@timers,[&gettimeofday()]);
986: $time=&tv_interval($lasttime);
987: $lasttime=[&gettimeofday()];
988: }
1.439 albertel 989: my $spacing=' 'x($#Apache::lonxml::depthcounter);
1.438 albertel 990: $Apache::lonxml::curdepth=join('_',@Apache::lonxml::depthcounter);
1.439 albertel 991: # &Apache::lonxml::debug("s$spacing$Apache::lonxml::depth : $Apache::lonxml::olddepth : $Apache::lonxml::curdepth : $token->[1] : $time");
1.54 albertel 992: #print "<br />s $Apache::lonxml::depth : $Apache::lonxml::olddepth : $curdepth : $token->[1]\n";
1.17 albertel 993: }
994:
995: sub decreasedepth {
1.19 albertel 996: my ($token) = @_;
1.439 albertel 997: if ( $#Apache::lonxml::depthcounter == -1) {
998: &Apache::lonxml::warning(&mt("Missing tags, unable to properly run file."));
1.43 albertel 999: }
1.439 albertel 1000: $Apache::lonxml::last_depth_count = pop(@Apache::lonxml::depthcounter);
1001:
1.340 albertel 1002: my ($timer,$time);
1003: if ($Apache::lonxml::debug eq "1") {
1004: $timer=pop(@timers);
1005: $time=&tv_interval($lasttime);
1006: $lasttime=[&gettimeofday()];
1007: }
1.439 albertel 1008: my $spacing=' 'x($#Apache::lonxml::depthcounter);
1009: $Apache::lonxml::curdepth = join('_',@Apache::lonxml::depthcounter);
1010: # &Apache::lonxml::debug("e$spacing$Apache::lonxml::depth : $Apache::lonxml::olddepth : $Apache::lonxml::curdepth : $token->[1] : $time : ".&tv_interval($timer));
1.54 albertel 1011: #print "<br />e $Apache::lonxml::depth : $Apache::lonxml::olddepth : $token->[1] : $curdepth\n";
1.1 sakharuk 1012: }
1.19 albertel 1013:
1.399 albertel 1014: sub get_id {
1015: my ($parstack,$safeeval)=@_;
1016: my $id= &Apache::lonxml::get_param('id',$parstack,$safeeval);
1.449 albertel 1017: if ($env{'request.state'} eq 'construct' && $id =~ /([._]|[^\w\d\s[:punct:]])/) {
1018: &error(&mt("ID "[_1]" contains invalid characters, IDs are only allowed to contain letters, numbers, spaces and -",'<tt>'.$id.'</tt>'));
1.399 albertel 1019: }
1020: if ($id =~ /^\s*$/) { $id = $Apache::lonxml::curdepth; }
1021: return $id;
1022: }
1023:
1.180 albertel 1024: sub get_all_text_unbalanced {
1.190 albertel 1025: #there is a copy of this in lonpublisher.pm
1.326 albertel 1026: my($tag,$pars)= @_;
1027: my $token;
1028: my $result='';
1029: $tag='<'.$tag.'>';
1030: while ($token = $$pars[-1]->get_token) {
1031: if (($token->[0] eq 'T')||($token->[0] eq 'C')||($token->[0] eq 'D')) {
1.386 albertel 1032: if ($token->[0] eq 'T' && $token->[2]) {
1.382 albertel 1033: $result.='<![CDATA['.$token->[1].']]>';
1034: } else {
1035: $result.=$token->[1];
1036: }
1.326 albertel 1037: } elsif ($token->[0] eq 'PI') {
1038: $result.=$token->[2];
1039: } elsif ($token->[0] eq 'S') {
1040: $result.=$token->[4];
1041: } elsif ($token->[0] eq 'E') {
1042: $result.=$token->[2];
1043: }
1044: if ($result =~ /\Q$tag\E/is) {
1045: ($result,my $redo)=$result =~ /(.*)\Q$tag\E(.*)/is;
1046: #&Apache::lonxml::debug('Got a winner with leftovers ::'.$2);
1047: #&Apache::lonxml::debug('Result is :'.$1);
1048: $redo=$tag.$redo;
1049: &Apache::lonxml::newparser($pars,\$redo);
1050: last;
1051: }
1052: }
1053: return $result
1.462 foxr 1054:
1.204 albertel 1055: }
1056:
1.462 foxr 1057: #########################################################################
1058: # #
1059: # bubble line counter management #
1060: # #
1061: #########################################################################
1062:
1.447 albertel 1063: =pod
1064:
1065: For bubble grading mode and exam bubble printing mode, the tracking of
1066: the current 'bubble line number' is stored in the %env element
1067: 'form.counter', and is modifed and handled by the following routines.
1068:
1069: The value of it is stored in $Apache:lonxml::counter when live and
1070: stored back to env after done.
1071:
1072: =item &increment_counter($increment);
1073:
1074: Increments the internal counter environment variable a specified amount
1075:
1076: Optional Arguments:
1077: $increment - amount to increment by (defaults to 1)
1.462 foxr 1078: Also 1 if the value is negative or zero.
1.467 foxr 1079: $part_response - A concatenation of the part and response id
1080: identifying exactly what is being 'answered'.
1081:
1.447 albertel 1082:
1083: =cut
1084:
1.204 albertel 1085: sub increment_counter {
1.467 foxr 1086: my ($increment, $part_response) = @_;
1.481 raeburn 1087: if ($env{'form.grade_noincrement'}) { return; }
1.462 foxr 1088: if (!defined($increment) || $increment le 0) {
1089: $increment = 1;
1090: }
1091: $Apache::lonxml::counter += $increment;
1092:
1.466 foxr 1093: # If the caller supplied the response_id parameter,
1.462 foxr 1094: # Maintain its counter.. creating if necessary.
1095:
1.470 albertel 1096: if (defined($part_response)) {
1.467 foxr 1097: if (!defined($Apache::lonxml::counters_per_part{$part_response})) {
1098: $Apache::lonxml::counters_per_part{$part_response} = 0;
1.462 foxr 1099: }
1.467 foxr 1100: $Apache::lonxml::counters_per_part{$part_response} += $increment;
1101: my $new_value = $Apache::lonxml::counters_per_part{$part_response};
1.247 albertel 1102: }
1.462 foxr 1103:
1.289 sakharuk 1104: $Apache::lonxml::counter_changed=1;
1.204 albertel 1105: }
1106:
1.447 albertel 1107: =pod
1108:
1.461 foxr 1109: =item &init_counter($increment);
1.447 albertel 1110:
1111: Initialize the internal counter environment variable
1112:
1113: =cut
1114:
1.204 albertel 1115: sub init_counter {
1.391 albertel 1116: if ($env{'request.state'} eq 'construct') {
1117: $Apache::lonxml::counter=1;
1118: $Apache::lonxml::counter_changed=1;
1119: } elsif (defined($env{'form.counter'})) {
1.372 albertel 1120: $Apache::lonxml::counter=$env{'form.counter'};
1.247 albertel 1121: $Apache::lonxml::counter_changed=0;
1.237 sakharuk 1122: } else {
1.204 albertel 1123: $Apache::lonxml::counter=1;
1.247 albertel 1124: $Apache::lonxml::counter_changed=1;
1.204 albertel 1125: }
1126: }
1127:
1128: sub store_counter {
1.474 raeburn 1129: &Apache::lonnet::appenv({'form.counter' => $Apache::lonxml::counter});
1.401 albertel 1130: $Apache::lonxml::counter_changed=0;
1.204 albertel 1131: return '';
1.180 albertel 1132: }
1133:
1.398 albertel 1134: {
1135: my $state;
1136: sub clear_problem_counter {
1137: undef($state);
1138: &Apache::lonnet::delenv('form.counter');
1139: &Apache::lonxml::init_counter();
1140: &Apache::lonxml::store_counter();
1141: }
1142:
1143: sub remember_problem_counter {
1.422 albertel 1144: &Apache::lonnet::transfer_profile_to_env(undef,undef,1);
1.398 albertel 1145: $state = $env{'form.counter'};
1146: }
1147:
1148: sub restore_problem_counter {
1149: if (defined($state)) {
1.474 raeburn 1150: &Apache::lonnet::appenv({'form.counter' => $state});
1.398 albertel 1151: }
1152: }
1.401 albertel 1153: sub get_problem_counter {
1154: if ($Apache::lonxml::counter_changed) { &store_counter() }
1.422 albertel 1155: &Apache::lonnet::transfer_profile_to_env(undef,undef,1);
1.401 albertel 1156: return $env{'form.counter'};
1157: }
1.398 albertel 1158: }
1159:
1.462 foxr 1160: =pod
1161:
1.468 albertel 1162: =item bubble_lines_for_part(part_response)
1.462 foxr 1163:
1164: Returns the number of lines required to get a response for
1.467 foxr 1165: $part_response (this is just $Apache::lonxml::counters_per_part{$part_response}
1.462 foxr 1166:
1167: =cut
1168:
1169: sub bubble_lines_for_part {
1.467 foxr 1170: my ($part_response) = @_;
1.462 foxr 1171:
1.467 foxr 1172: if (!defined($Apache::lonxml::counters_per_part{$part_response})) {
1.462 foxr 1173: return 0;
1174: } else {
1.467 foxr 1175: return $Apache::lonxml::counters_per_part{$part_response};
1.462 foxr 1176: }
1177: }
1178:
1179: =pod
1180:
1181: =item clear_bubble_lines_for_part
1182:
1183: Clears the hash of bubble lines per part. If a caller
1184: needs to analyze several resources this should be called between
1185: resources to reset the hash for each problem being analyzed.
1186:
1187: =cut
1188:
1189: sub clear_bubble_lines_for_part {
1190: undef(%Apache::lonxml::counters_per_part);
1191: }
1192:
1193: =pod
1194:
1.468 albertel 1195: =item set_bubble_lines(part_response, value)
1.462 foxr 1196:
1197: If there is a problem part, that for whatever reason
1198: requires bubble lines that are not
1199: the same as the counter increment, it can call this sub during
1200: analysis to set its hash value explicitly.
1201:
1202: =cut
1203:
1204: sub set_bubble_lines {
1.467 foxr 1205: my ($part_response, $value) = @_;
1.462 foxr 1206:
1.467 foxr 1207: $Apache::lonxml::counters_per_part{$part_response} = $value;
1.462 foxr 1208: }
1209:
1210: =pod
1211:
1212: =item get_bubble_line_hash
1213:
1214: Returns the current bubble line hash. This is assumed to
1215: be small so we return a copy
1216:
1217:
1218: =cut
1219:
1220: sub get_bubble_line_hash {
1221: return %Apache::lonxml::counters_per_part;
1222: }
1223:
1224:
1225: #--------------------------------------------------
1226:
1.19 albertel 1227: sub get_all_text {
1.270 albertel 1228: my($tag,$pars,$style)= @_;
1229: my $gotfullstack=1;
1230: if (ref($pars) ne 'ARRAY') {
1231: $gotfullstack=0;
1232: $pars=[$pars];
1233: }
1234: if (ref($style) ne 'HASH') {
1235: $style={};
1236: }
1237: my $depth=0;
1238: my $token;
1239: my $result='';
1240: if ( $tag =~ m:^/: ) {
1241: my $tag=substr($tag,1);
1242: #&Apache::lonxml::debug("have:$tag:");
1243: my $top_empty=0;
1244: while (($depth >=0) && ($#$pars > -1) && (!$top_empty)) {
1245: while (($depth >=0) && ($token = $$pars[-1]->get_token)) {
1246: #&Apache::lonxml::debug("e token:$token->[0]:$depth:$token->[1]:".$#$pars.":".$#Apache::lonxml::pwd);
1247: if (($token->[0] eq 'T')||($token->[0] eq 'C')||($token->[0] eq 'D')) {
1.382 albertel 1248: if ($token->[2]) {
1249: $result.='<![CDATA['.$token->[1].']]>';
1250: } else {
1251: $result.=$token->[1];
1252: }
1.270 albertel 1253: } elsif ($token->[0] eq 'PI') {
1254: $result.=$token->[2];
1255: } elsif ($token->[0] eq 'S') {
1.316 albertel 1256: if ($token->[1] =~ /^\Q$tag\E$/i) { $depth++; }
1257: if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_ON$/) { $Apache::lonxml::usestyle=1; }
1258: if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_OFF$/) { $Apache::lonxml::usestyle=0; }
1.270 albertel 1259: $result.=$token->[4];
1260: } elsif ($token->[0] eq 'E') {
1.316 albertel 1261: if ( $token->[1] =~ /^\Q$tag\E$/i) { $depth--; }
1.270 albertel 1262: #skip sending back the last end tag
1.283 albertel 1263: if ($depth == 0 && exists($$style{'/'.$token->[1]}) && $Apache::lonxml::usestyle) {
1.270 albertel 1264: my $string=
1265: '<LONCAPA_INTERNAL_TURN_STYLE_OFF end="yes" />'.
1266: $$style{'/'.$token->[1]}.
1267: $token->[2].
1268: '<LONCAPA_INTERNAL_TURN_STYLE_ON />';
1269: &Apache::lonxml::newparser($pars,\$string);
1270: #&Apache::lonxml::debug("reParsing $string");
1271: next;
1272: }
1273: if ($depth > -1) {
1274: $result.=$token->[2];
1275: } else {
1276: $$pars[-1]->unget_token($token);
1277: }
1278: }
1279: }
1280: if (($depth >=0) && ($#$pars == 0) ) { $top_empty=1; }
1281: if (($depth >=0) && ($#$pars > 0) ) {
1282: pop(@$pars);
1283: pop(@Apache::lonxml::pwd);
1284: }
1285: }
1286: if ($top_empty && $depth >= 0) {
1287: #never found the end tag ran out of text, throw error send back blank
1288: &error('Never found end tag for <'.$tag.
1289: '> current string <pre>'.
1.314 albertel 1290: &HTML::Entities::encode($result,'<>&"').
1.270 albertel 1291: '</pre>');
1292: if ($gotfullstack) {
1293: my $newstring='</'.$tag.'>'.$result;
1294: &Apache::lonxml::newparser($pars,\$newstring);
1295: }
1296: $result='';
1297: }
1298: } else {
1299: while ($#$pars > -1) {
1300: while ($token = $$pars[-1]->get_token) {
1301: #&Apache::lonxml::debug("s token:$token->[0]:$depth:$token->[1]");
1302: if (($token->[0] eq 'T')||($token->[0] eq 'C')||
1303: ($token->[0] eq 'D')) {
1.382 albertel 1304: if ($token->[2]) {
1305: $result.='<![CDATA['.$token->[1].']]>';
1306: } else {
1307: $result.=$token->[1];
1308: }
1.270 albertel 1309: } elsif ($token->[0] eq 'PI') {
1310: $result.=$token->[2];
1311: } elsif ($token->[0] eq 'S') {
1.316 albertel 1312: if ( $token->[1] =~ /^\Q$tag\E$/i) {
1.270 albertel 1313: $$pars[-1]->unget_token($token); last;
1314: } else {
1315: $result.=$token->[4];
1316: }
1.316 albertel 1317: if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_ON$/) { $Apache::lonxml::usestyle=1; }
1318: if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_OFF$/) { $Apache::lonxml::usestyle=0; }
1.270 albertel 1319: } elsif ($token->[0] eq 'E') {
1320: $result.=$token->[2];
1321: }
1322: }
1323: if (($#$pars > 0) ) {
1324: pop(@$pars);
1325: pop(@Apache::lonxml::pwd);
1326: } else { last; }
1327: }
1328: }
1329: #&Apache::lonxml::debug("Exit:$result:");
1330: return $result
1.19 albertel 1331: }
1332:
1.23 albertel 1333: sub newparser {
1334: my ($parser,$contentref,$dir) = @_;
1.167 albertel 1335: push (@$parser,HTML::LCParser->new($contentref));
1.365 albertel 1336: $$parser[-1]->xml_mode(1);
1337: $$parser[-1]->marked_sections(1);
1.23 albertel 1338: if ( $dir eq '' ) {
1339: push (@Apache::lonxml::pwd, $Apache::lonxml::pwd[$#Apache::lonxml::pwd]);
1340: } else {
1341: push (@Apache::lonxml::pwd, $dir);
1342: }
1343: }
1.1 sakharuk 1344:
1.8 albertel 1345: sub parstring {
1.417 albertel 1346: my ($token) = @_;
1347: my (@vars,@values);
1348: foreach my $attr (@{$token->[3]}) {
1349: if ($attr!~/\W/) {
1350: my $val=$token->[2]->{$attr};
1351: $val =~ s/([\%\@\\\"\'])/\\$1/g;
1352: $val =~ s/(\$[^\{a-zA-Z_])/\\$1/g;
1353: $val =~ s/(\$)$/\\$1/;
1354: #if ($val =~ m/^[\%\@]/) { $val="\\".$val; }
1355: push(@vars,"\$$attr");
1356: push(@values,"\"$val\"");
1357: }
1358: }
1359: my $var_init =
1360: (@vars) ? 'my ('.join(',',@vars).') = ('.join(',',@values).');'
1361: : '';
1362: return $var_init;
1.8 albertel 1363: }
1.22 albertel 1364:
1.384 albertel 1365: sub extlink {
1366: my ($res,$exact)=@_;
1367: if (!$exact) {
1368: $res=&Apache::lonnet::hreflocation($Apache::lonxml::pwd[-1],$res);
1369: }
1370: push(@Apache::lonxml::extlinks,$res)
1371: }
1372:
1.34 www 1373: sub writeallows {
1.126 www 1374: unless ($#extlinks>=0) { return; }
1.377 albertel 1375: my $thisurl = &Apache::lonnet::clutter(shift);
1.372 albertel 1376: if ($env{'httpref.'.$thisurl}) {
1377: $thisurl=$env{'httpref.'.$thisurl};
1.111 www 1378: }
1.34 www 1379: my $thisdir=$thisurl;
1380: $thisdir=~s/\/[^\/]+$//;
1381: my %httpref=();
1.142 albertel 1382: foreach (@extlinks) {
1.34 www 1383: $httpref{'httpref.'.
1.444 albertel 1384: &Apache::lonnet::hreflocation($thisdir,&unescape($_))}=$thisurl;
1.142 albertel 1385: }
1.126 www 1386: @extlinks=();
1.474 raeburn 1387: &Apache::lonnet::appenv(\%httpref);
1.34 www 1388: }
1389:
1.281 albertel 1390: sub register_ssi {
1391: my ($url,%form)=@_;
1392: push (@Apache::lonxml::ssi_info,{'url'=>$url,'form'=>\%form});
1393: return '';
1394: }
1395:
1396: sub do_registered_ssi {
1397: foreach my $info (@Apache::lonxml::ssi_info) {
1398: my %form=%{ $info->{'form'}};
1399: my $url=$info->{'url'};
1400: &Apache::lonnet::ssi($url,%form);
1401: }
1402: }
1.448 albertel 1403:
1404: sub add_script_result {
1405: my ($display) = @_;
1406: push(@script_var_displays, $display);
1407: }
1408:
1.66 www 1409: #
1410: # Afterburner handles anchors, highlights and links
1411: #
1412: sub afterburn {
1413: my $result=shift;
1.154 albertel 1414: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
1415: ['highlight','anchor','link']);
1.372 albertel 1416: if ($env{'form.highlight'}) {
1417: foreach (split(/\,/,$env{'form.highlight'})) {
1.66 www 1418: my $anchorname=$_;
1419: my $matchthis=$anchorname;
1420: $matchthis=~s/\_+/\\s\+/g;
1.317 albertel 1421: $result=~s/(\Q$matchthis\E)/\<font color=\"red\"\>$1\<\/font\>/gs;
1.142 albertel 1422: }
1.66 www 1423: }
1.372 albertel 1424: if ($env{'form.link'}) {
1425: foreach (split(/\,/,$env{'form.link'})) {
1.66 www 1426: my ($anchorname,$linkurl)=split(/\>/,$_);
1427: my $matchthis=$anchorname;
1428: $matchthis=~s/\_+/\\s\+/g;
1.317 albertel 1429: $result=~s/(\Q$matchthis\E)/\<a href=\"$linkurl\"\>$1\<\/a\>/gs;
1.142 albertel 1430: }
1.66 www 1431: }
1.372 albertel 1432: if ($env{'form.anchor'}) {
1433: my $anchorname=$env{'form.anchor'};
1.66 www 1434: my $matchthis=$anchorname;
1435: $matchthis=~s/\_+/\\s\+/g;
1.317 albertel 1436: $result=~s/(\Q$matchthis\E)/\<a name=\"$anchorname\"\>$1\<\/a\>/s;
1.66 www 1437: $result.=(<<"ENDSCRIPT");
1.226 albertel 1438: <script type="text/javascript">
1.66 www 1439: document.location.hash='$anchorname';
1440: </script>
1441: ENDSCRIPT
1442: }
1443: return $result;
1444: }
1445:
1.79 www 1446: sub storefile {
1447: my ($file,$contents)=@_;
1.290 albertel 1448: &Apache::lonnet::correct_line_ends(\$contents);
1.79 www 1449: if (my $fh=Apache::File->new('>'.$file)) {
1450: print $fh $contents;
1451: $fh->close();
1.271 www 1452: return 1;
1.147 albertel 1453: } else {
1.482 bisitz 1454: &warning(&mt('Unable to save file [_1]','<tt>'.$file.'</tt>'));
1.271 www 1455: return 0;
1.79 www 1456: }
1457: }
1458:
1.151 albertel 1459: sub createnewhtml {
1.321 www 1460: my $title=&mt('Title of document goes here');
1461: my $body=&mt('Body of document goes here');
1462: my $filecontents=(<<SIMPLECONTENT);
1.78 www 1463: <html>
1464: <head>
1.321 www 1465: <title>$title</title>
1.78 www 1466: </head>
1467: <body bgcolor="#FFFFFF">
1.321 www 1468: $body
1.78 www 1469: </body>
1470: </html>
1471: SIMPLECONTENT
1.321 www 1472: return $filecontents;
1.151 albertel 1473: }
1474:
1.274 albertel 1475: sub createnewsty {
1476: my $filecontents=(<<SIMPLECONTENT);
1477: <definetag name="">
1478: <render>
1479: <web></web>
1480: <tex></tex>
1481: </render>
1482: </definetag>
1483: SIMPLECONTENT
1484: return $filecontents;
1485: }
1486:
1.472 www 1487: sub verify_html {
1488: my ($filecontents)=@_;
1489: if ($filecontents!~/(?:\<|\<\;)(?:html|xml)[^\<]*(?:\>|\>\;)/is) {
1490: return &mt('File does not have [_1] or [_2] starting tag','<html>','<xml>');
1491: }
1492: if ($filecontents!~/(?:\<|\<\;)\/(?:html|xml)(?:\>|\>\;)/is) {
1493: return &mt('File does not have [_1] or [_2] ending tag','<html>','<xml>');
1494: }
1495: if ($filecontents!~/(?:\<|\<\;)(?:body|frameset)[^\<]*(?:\>|\>\;)/is) {
1496: return &mt('File does not have [_1] or [_2] starting tag','<body>','<frameset>');
1497: }
1498: if ($filecontents!~/(?:\<|\<\;)\/(?:body|frameset)[^\<]*(?:\>|\>\;)/is) {
1499: return &mt('File does not have [_1] or [_2] ending tag','<body>','<frameset>');
1500: }
1501: return '';
1502: }
1.147 albertel 1503:
1.478 www 1504: sub renderingoptions {
1505: my %langchoices=('' => '');
1506: foreach (&Apache::loncommon::languageids()) {
1507: if (&Apache::loncommon::supportedlanguagecode($_)) {
1508: $langchoices{&Apache::loncommon::supportedlanguagecode($_)}
1509: = &Apache::loncommon::plainlanguagedescription($_);
1510: }
1511: }
1512: return
1513: '<span class="LC_nobreak">'.
1.479 bisitz 1514: &mt('Language:').' '.
1.478 www 1515: &Apache::loncommon::select_form($env{'form.languages'},'languages',
1516: %langchoices).'
1517: </span>
1518: <span class="LC_nobreak">'.
1.479 bisitz 1519: &mt('Math Rendering:').' '.
1.478 www 1520: &Apache::loncommon::select_form($env{'form.texengine'},'texengine',
1521: ('' => '',
1.483 bisitz 1522: 'tth' => 'tth (TeX to HTML)',
1.478 www 1523: 'jsMath' => 'jsMath',
1.479 bisitz 1524: 'mimetex' => 'mimetex (Convert to Images)')).'
1.478 www 1525: </span>';
1526: }
1527:
1.151 albertel 1528: sub inserteditinfo {
1.470 albertel 1529: my ($filecontents, $filetype, $filename)=@_;
1.314 albertel 1530: $filecontents = &HTML::Entities::encode($filecontents,'<>&"');
1.274 albertel 1531: my $xml_help = '';
1.321 www 1532: my $initialize='';
1.452 albertel 1533: my $textarea_id = 'filecont';
1534: my ($add_to_onload, $add_to_onresize);
1.456 albertel 1535: $initialize=&Apache::lonhtmlcommon::spellheader();
1536: if ($filetype eq 'html'
1537: && (!&Apache::lonhtmlcommon::htmlareablocked() &&
1538: &Apache::lonhtmlcommon::htmlareabrowser())) {
1.463 albertel 1539: $textarea_id .= '___Frame';
1540: my $lang = &Apache::lonhtmlcommon::htmlarea_lang();
1.456 albertel 1541: $initialize.=(<<FULLPAGE);
1.321 www 1542: <script type="text/javascript">
1.463 albertel 1543: lonca
1.321 www 1544: function initDocument() {
1.463 albertel 1545: var oFCKeditor = new FCKeditor('filecont');
1546: oFCKeditor.Config['CustomConfigurationsPath'] = '/fckeditor/loncapaconfig.js' ;
1547: oFCKeditor.Config['FullPage'] = true
1548: oFCKeditor.Config['AutoDetectLanguage'] = false;
1549: oFCKeditor.Config['DefaultLanguage'] = "$lang";
1550: oFCKeditor.ReplaceTextarea();
1551: }
1552: function check_if_dirty(editor) {
1553: if (editor.IsDirty()) {
1554: unClean();
1555: }
1556: }
1557: function FCKeditor_OnComplete(editor) {
1558: editor.Events.AttachEvent("OnSelectionChange",check_if_dirty);
1559: resize_textarea('$textarea_id','LC_aftertextarea');
1.321 www 1560: }
1561: </script>
1562: FULLPAGE
1.456 albertel 1563: } else {
1564: $initialize.=(<<FULLPAGE);
1.347 albertel 1565: <script type="text/javascript">
1566: function initDocument() {
1.453 albertel 1567: resize_textarea('$textarea_id','LC_aftertextarea');
1.347 albertel 1568: }
1569: </script>
1570: FULLPAGE
1.456 albertel 1571: }
1572:
1573: $add_to_onload = 'initDocument();';
1574: $add_to_onresize = "resize_textarea('$textarea_id','LC_aftertextarea');";
1575:
1576: if ($filetype eq 'html') {
1.321 www 1577: $xml_help=&Apache::loncommon::helpLatexCheatsheet();
1.274 albertel 1578: }
1.452 albertel 1579:
1.254 albertel 1580: my $titledisplay=&display_title();
1.426 banghart 1581: my %lt=&Apache::lonlocal::texthash('st' => 'Save and Edit',
1582: 'vi' => 'Save and View',
1.427 banghart 1583: 'dv' => 'Discard Edits and View',
1.428 banghart 1584: 'un' => 'undo',
1.280 www 1585: 'ed' => 'Edit');
1.470 albertel 1586: my $spelllink .=&Apache::lonhtmlcommon::spelllink('xmledit','filecont');
1.451 albertel 1587: my $textarea_events = &Apache::edit::element_change_detection();
1588: my $form_events = &Apache::edit::form_change_detection();
1.472 www 1589: my $htmlerror=&verify_html($filecontents);
1590: if ($htmlerror) {
1.475 raeburn 1591: $htmlerror='<span class="LC_error">'.$htmlerror.'</span>';
1.472 www 1592: }
1.78 www 1593: my $editfooter=(<<ENDFOOTER);
1.321 www 1594: $initialize
1.78 www 1595: <a name="editsection" />
1.451 albertel 1596: <form $form_events method="post" name="xmledit">
1.470 albertel 1597: <div class="LC_edit_problem_editxml_header">
1598: <table class="LC_edit_problem_header_title"><tr><td>
1599: $filename
1600: </td><td align="right">
1601: $xml_help
1602: </td></tr>
1603: </table>
1604: <div class="LC_edit_problem_discards">
1605: <input type="submit" name="discardview" accesskey="d" value="$lt{'dv'}" />
1606: <input type="submit" name="Undo" accesskey="u" value="$lt{'un'}" />
1.472 www 1607: $spelllink $htmlerror
1.470 albertel 1608: </div>
1609: <div class="LC_edit_problem_saves">
1610: <input type="submit" name="savethisfile" accesskey="s" value="$lt{'st'}" />
1611: <input type="submit" name="viewmode" accesskey="v" value="$lt{'vi'}" />
1612: </div>
1613: </div>
1614: <textarea $textarea_events style="width:100%" cols="80" rows="44" name="filecont" id="filecont">$filecontents</textarea>
1615: <div id="LC_aftertextarea">
1616: <br />
1617: $titledisplay
1618: </div>
1.78 www 1619: </form>
1.321 www 1620: </body>
1.78 www 1621: ENDFOOTER
1.452 albertel 1622: return ($editfooter,$add_to_onload,$add_to_onresize);;
1.78 www 1623: }
1624:
1.152 albertel 1625: sub get_target {
1.372 albertel 1626: my $viewgrades=&Apache::lonnet::allowed('vgr',$env{'request.course.id'});
1627: if ( $env{'request.state'} eq 'published') {
1628: if ( defined($env{'form.grade_target'})
1.152 albertel 1629: && ($viewgrades == 'F' )) {
1.372 albertel 1630: return ($env{'form.grade_target'});
1631: } elsif (defined($env{'form.grade_target'})) {
1632: if (($env{'form.grade_target'} eq 'web') ||
1633: ($env{'form.grade_target'} eq 'tex') ) {
1634: return $env{'form.grade_target'}
1.153 albertel 1635: } else {
1636: return 'web';
1637: }
1.152 albertel 1638: } else {
1639: return 'web';
1640: }
1.372 albertel 1641: } elsif ($env{'request.state'} eq 'construct') {
1642: if ( defined($env{'form.grade_target'})) {
1643: return ($env{'form.grade_target'});
1.152 albertel 1644: } else {
1645: return 'web';
1646: }
1647: } else {
1648: return 'web';
1649: }
1650: }
1651:
1.24 sakharuk 1652: sub handler {
1.255 sakharuk 1653: my $request=shift;
1654:
1655: my $target=&get_target();
1656:
1.372 albertel 1657: $Apache::lonxml::debug=$env{'user.debug'};
1.255 sakharuk 1658:
1.364 albertel 1659: &Apache::loncommon::content_type($request,'text/html');
1.255 sakharuk 1660: &Apache::loncommon::no_cache($request);
1.372 albertel 1661: if ($env{'request.state'} eq 'published') {
1.363 albertel 1662: $request->set_last_modified(&Apache::lonnet::metadata($request->uri,
1663: 'lastrevisiondate'));
1664: }
1.255 sakharuk 1665: $request->send_http_header;
1666:
1667: return OK if $request->header_only;
1.68 www 1668:
1669:
1.255 sakharuk 1670: my $file=&Apache::lonnet::filelocation("",$request->uri);
1.274 albertel 1671: my $filetype;
1672: if ($file =~ /\.sty$/) {
1673: $filetype='sty';
1674: } else {
1675: $filetype='html';
1676: }
1.78 www 1677: #
1678: # Edit action? Save file.
1679: #
1.428 banghart 1680: if (!($env{'request.state'} eq 'published')) {
1681: if ($env{'form.savethisfile'} || $env{'form.viewmode'} || $env{'form.Undo'}) {
1.429 albertel 1682: my $html_file=&Apache::lonnet::getfile($file);
1683: my $error = &Apache::lonhomework::handle_save_or_undo($request, \$html_file, \$env{'form.filecont'});
1.472 www 1684: if ($env{'form.savethisfile'}) {
1685: $env{'form.editmode'}='Edit'; #force edit mode
1686: }
1.255 sakharuk 1687: }
1688: }
1689: my %mystyle;
1690: my $result = '';
1691: my $filecontents=&Apache::lonnet::getfile($file);
1692: if ($filecontents eq -1) {
1.402 albertel 1693: my $start_page=&Apache::loncommon::start_page('File Error');
1.412 albertel 1694: my $end_page=&Apache::loncommon::end_page();
1.284 www 1695: my $fnf=&mt('File not found');
1.255 sakharuk 1696: $result=(<<ENDNOTFOUND);
1.402 albertel 1697: $start_page
1.284 www 1698: <b>$fnf: $file</b>
1.402 albertel 1699: $end_page
1.78 www 1700: ENDNOTFOUND
1.343 albertel 1701: $filecontents='';
1.372 albertel 1702: if ($env{'request.state'} ne 'published') {
1.274 albertel 1703: if ($filetype eq 'sty') {
1704: $filecontents=&createnewsty();
1705: } else {
1706: $filecontents=&createnewhtml();
1707: }
1.372 albertel 1708: $env{'form.editmode'}='Edit'; #force edit mode
1.255 sakharuk 1709: }
1710: } else {
1.372 albertel 1711: unless ($env{'request.state'} eq 'published') {
1.343 albertel 1712: if ($filecontents=~/BEGIN LON-CAPA Internal/) {
1.381 www 1713: &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 1714: }
1.264 www 1715: #
1716: # we are in construction space, see if edit mode forced
1.385 albertel 1717: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
1718: ['editmode']);
1.255 sakharuk 1719: }
1.427 banghart 1720: if (!$env{'form.editmode'} || $env{'form.viewmode'} || $env{'form.discardview'}) {
1.455 albertel 1721: &Apache::structuretags::reset_problem_globals();
1.255 sakharuk 1722: $result = &Apache::lonxml::xmlparse($request,$target,$filecontents,
1723: '',%mystyle);
1.455 albertel 1724: # .html files may contain <problem> or <Task> need to clean
1725: # up if it did
1726: &Apache::structuretags::reset_problem_globals();
1727: &Apache::lonhomework::finished_parsing();
1.385 albertel 1728: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
1729: ['rawmode']);
1.395 albertel 1730: if ($env{'form.rawmode'}) { $result = $filecontents; }
1.456 albertel 1731: if ($filetype eq 'sty') {
1.457 albertel 1732: my $controls =
1733: ($env{'request.state'} eq 'construct') ? &Apache::londefdef::edit_controls()
1734: : '';
1.456 albertel 1735: my %options = ('bgcolor' => '#FFFFFF');
1736: $result =
1737: &Apache::loncommon::start_page(undef,undef,\%options).
1.457 albertel 1738: $controls.
1.456 albertel 1739: $result.
1740: &Apache::loncommon::end_page();
1741: }
1.255 sakharuk 1742: }
1.147 albertel 1743: }
1.456 albertel 1744:
1.78 www 1745: #
1746: # Edit action? Insert editing commands
1747: #
1.372 albertel 1748: unless ($env{'request.state'} eq 'published') {
1.427 banghart 1749: if ($env{'form.editmode'} && (!($env{'form.viewmode'})) && (!($env{'form.discardview'})))
1.450 albertel 1750: {
1.470 albertel 1751: my $displayfile=$request->uri;
1752: $displayfile=~s/^\/[^\/]*//;
1753:
1.452 albertel 1754: my ($edit_info, $add_to_onload, $add_to_onresize)=
1.470 albertel 1755: &inserteditinfo($filecontents,$filetype,$displayfile);
1.450 albertel 1756:
1757: my %options =
1758: ('add_entries' =>
1.452 albertel 1759: {'onresize' => $add_to_onresize,
1760: 'onload' => $add_to_onload, });
1761:
1.402 albertel 1762: if ($env{'environment.remote'} ne 'off') {
1763: $options{'bgcolor'} = '#FFFFFF';
1.450 albertel 1764: $options{'only_body'} = 1;
1.349 albertel 1765: }
1.452 albertel 1766: my $js =
1767: &Apache::edit::js_change_detection().
1768: &Apache::loncommon::resize_textarea_js();
1.451 albertel 1769: my $start_page = &Apache::loncommon::start_page(undef,$js,
1.402 albertel 1770: \%options);
1771: $result=$start_page.
1.470 albertel 1772: &Apache::lonxml::message_location().
1.450 albertel 1773: $edit_info.
1774: &Apache::loncommon::end_page();
1.255 sakharuk 1775: }
1.147 albertel 1776: }
1.402 albertel 1777: if ($filetype eq 'html') { &writeallows($request->uri); }
1.255 sakharuk 1778:
1.309 albertel 1779: &Apache::lonxml::add_messages(\$result);
1.255 sakharuk 1780: $request->print($result);
1781:
1782: return OK;
1.253 albertel 1783: }
1784:
1785: sub display_title {
1786: my $result;
1.372 albertel 1787: if ($env{'request.state'} eq 'construct') {
1.253 albertel 1788: my $title=&Apache::lonnet::gettitle();
1789: if (!defined($title) || $title eq '') {
1.372 albertel 1790: $title = $env{'request.filename'};
1.253 albertel 1791: $title = substr($title, rindex($title, '/') + 1);
1792: }
1.476 bisitz 1793: $result = "<script type='text/javascript'>top.document.title = '$title - LON-CAPA "
1794: .&mt('Construction Space')."';</script>";
1.253 albertel 1795: }
1796: return $result;
1.24 sakharuk 1797: }
1.147 albertel 1798:
1.22 albertel 1799: sub debug {
1.298 albertel 1800: if ($Apache::lonxml::debug eq "1") {
1801: $|=1;
1.300 albertel 1802: my $request=$Apache::lonxml::request;
1.388 albertel 1803: if (!$request) {
1804: eval { $request=Apache->request; };
1805: }
1806: if (!$request) {
1807: eval { $request=Apache2::RequestUtil->request; };
1808: }
1.314 albertel 1809: $request->print('<font size="-2"><pre>DEBUG:'.&HTML::Entities::encode($_[0],'<>&"')."</pre></font>\n");
1.346 albertel 1810: #&Apache::lonnet::logthis($_[0]);
1.298 albertel 1811: }
1.22 albertel 1812: }
1.49 albertel 1813:
1.348 albertel 1814: sub show_error_warn_msg {
1.372 albertel 1815: if ($env{'request.filename'} eq '/home/httpd/html/res/lib/templates/simpleproblem.problem' &&
1816: &Apache::lonnet::allowed('mdc',$env{'request.course.id'})) {
1.351 albertel 1817: return 1;
1818: }
1.348 albertel 1819: return (($Apache::lonxml::debug eq 1) ||
1.372 albertel 1820: ($env{'request.state'} eq 'construct') ||
1.348 albertel 1821: ($Apache::lonhomework::browse eq 'F'
1822: &&
1.372 albertel 1823: $env{'form.show_errors'} eq 'on'));
1.348 albertel 1824: }
1825:
1.22 albertel 1826: sub error {
1.454 albertel 1827: my @errors = @_;
1828:
1.336 albertel 1829: $errorcount++;
1.454 albertel 1830:
1831: if (defined($Apache::inputtags::part)) {
1832: if ( @Apache::inputtags::response ) {
1833: push(@errors,
1834: &mt("This error occurred while processing response [_1] in part [_2]",
1835: $Apache::inputtags::response[-1],
1836: $Apache::inputtags::part));
1837: } else {
1838: push(@errors,
1839: &mt("This error occurred while processing part [_1]",
1840: $Apache::inputtags::part));
1841: }
1842: }
1843:
1.348 albertel 1844: if ( &show_error_warn_msg() ) {
1.336 albertel 1845: # If printing in construction space, put the error inside <pre></pre>
1846: push(@Apache::lonxml::error_messages,
1.484 ! bisitz 1847: $Apache::lonxml::warnings_error_header
! 1848: .'<div class="LC_error">'
! 1849: .'<b>'.&mt('ERROR:').' </b>'.join("<br />\n",@errors)
! 1850: ."</div>\n");
1.336 albertel 1851: $Apache::lonxml::warnings_error_header='';
1852: } else {
1853: my $errormsg;
1854: my ($symb)=&Apache::lonnet::symbread();
1855: if ( !$symb ) {
1856: #public or browsers
1857: $errormsg=&mt("An error occured while processing this resource. The author has been notified.");
1.403 albertel 1858: }
1.413 albertel 1859: my $host=$Apache::lonnet::perlvar{'lonHostID'};
1.476 bisitz 1860: push(@errors,
1861: &mt("The error occurred on host [_1]",
1862: "<tt>$host</tt>"));
1.454 albertel 1863:
1864: my $msg = join('<br />', @errors);
1865:
1.336 albertel 1866: #notify author
1.403 albertel 1867: &Apache::lonmsg::author_res_msg($env{'request.filename'},$msg);
1.336 albertel 1868: #notify course
1.372 albertel 1869: if ( $symb && $env{'request.course.id'} ) {
1.380 www 1870: my $cnum=$env{'course.'.$env{'request.course.id'}.'.num'};
1871: my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
1.440 albertel 1872: my (undef,%users)=&Apache::lonmsg::decide_receiver(undef,0,1,1,1);
1.372 albertel 1873: my $declutter=&Apache::lonnet::declutter($env{'request.filename'});
1.435 raeburn 1874: my $baseurl = &Apache::lonnet::clutter($declutter);
1.336 albertel 1875: my @userlist;
1876: foreach (keys %users) {
1877: my ($user,$domain) = split(/:/, $_);
1878: push(@userlist,"$user\@$domain");
1.380 www 1879: my $key=$declutter.'_'.$user.'_'.$domain;
1880: my %lastnotified=&Apache::lonnet::get('nohist_xmlerrornotifications',
1881: [$key],
1882: $cdom,$cnum);
1883: my $now=time;
1884: if ($now-$lastnotified{$key}>86400) {
1.434 raeburn 1885: my $title = &Apache::lonnet::gettitle($symb);
1886: my $sentmessage;
1.380 www 1887: &Apache::lonmsg::user_normal_msg($user,$domain,
1.435 raeburn 1888: "Error [$title]",$msg,'',$baseurl,'','',
1.434 raeburn 1889: \$sentmessage,$symb,$title,1);
1.380 www 1890: &Apache::lonnet::put('nohist_xmlerrornotifications',
1891: {$key => $now},
1892: $cdom,$cnum);
1893: }
1.336 albertel 1894: }
1.372 albertel 1895: if ($env{'request.role.adv'}) {
1.336 albertel 1896: $errormsg=&mt("An error occured while processing this resource. The course personnel ([_1]) and the author have been notified.",join(', ',@userlist));
1897: } else {
1898: $errormsg=&mt("An error occured while processing this resource. The instructor has been notified.");
1899: }
1900: }
1901: push(@Apache::lonxml::error_messages,"<b>$errormsg</b> <br />");
1.52 albertel 1902: }
1.22 albertel 1903: }
1.49 albertel 1904:
1.22 albertel 1905: sub warning {
1.295 albertel 1906: $warningcount++;
1.261 albertel 1907:
1.372 albertel 1908: if ($env{'form.grade_target'} ne 'tex') {
1.348 albertel 1909: if ( &show_error_warn_msg() ) {
1.309 albertel 1910: push(@Apache::lonxml::warning_messages,
1.484 ! bisitz 1911: $Apache::lonxml::warnings_error_header
! 1912: .'<div class="LC_warning">'
! 1913: .&mt('[_1]W[_2]ARNING','<b>','</b>')."<b>:</b> ".join('<br />',@_)
! 1914: ."</div>\n"
1.482 bisitz 1915: );
1.295 albertel 1916: $Apache::lonxml::warnings_error_header='';
1917: }
1918: }
1.309 albertel 1919: }
1920:
1921: sub info {
1.372 albertel 1922: if ($env{'form.grade_target'} ne 'tex'
1923: && $env{'request.state'} eq 'construct') {
1.309 albertel 1924: push(@Apache::lonxml::info_messages,join('<br />',@_)."<br />\n");
1925: }
1926: }
1927:
1928: sub message_location {
1929: return '__LONCAPA_INTERNAL_MESSAGE_LOCATION__';
1930: }
1931:
1932: sub add_messages {
1933: my ($msg)=@_;
1934: my $result=join(' ',
1935: @Apache::lonxml::info_messages,
1936: @Apache::lonxml::error_messages,
1937: @Apache::lonxml::warning_messages);
1938: undef(@Apache::lonxml::info_messages);
1939: undef(@Apache::lonxml::error_messages);
1940: undef(@Apache::lonxml::warning_messages);
1941: $$msg=~s/__LONCAPA_INTERNAL_MESSAGE_LOCATION__/$result/;
1942: $$msg=~s/__LONCAPA_INTERNAL_MESSAGE_LOCATION__//g;
1.83 albertel 1943: }
1944:
1945: sub get_param {
1.213 albertel 1946: my ($param,$parstack,$safeeval,$context,$case_insensitive) = @_;
1947: if ( ! $context ) { $context = -1; }
1948: my $args ='';
1949: if ( $#$parstack > (-2-$context) ) { $args=$$parstack[$context]; }
1.297 sakharuk 1950: if ( ! $Apache::lonxml::usestyle ) {
1951: $args=$Apache::lonxml::style_values.$args;
1952: }
1.213 albertel 1953: if ( ! $args ) { return undef; }
1954: if ( $case_insensitive ) {
1.417 albertel 1955: if ($args =~ s/(my (?:.*))(\$\Q$param\E[,\)])/$1.lc($2)/ei) {
1.213 albertel 1956: return &Apache::run::run("{$args;".'return $'.$param.'}',
1957: $safeeval); #'
1958: } else {
1959: return undef;
1960: }
1961: } else {
1.417 albertel 1962: if ( $args =~ /my .*\$\Q$param\E[,\)]/ ) {
1.213 albertel 1963: return &Apache::run::run("{$args;".'return $'.$param.'}',
1964: $safeeval); #'
1965: } else {
1966: return undef;
1967: }
1968: }
1.22 albertel 1969: }
1970:
1.132 albertel 1971: sub get_param_var {
1.213 albertel 1972: my ($param,$parstack,$safeeval,$context,$case_insensitive) = @_;
1.132 albertel 1973: if ( ! $context ) { $context = -1; }
1974: my $args ='';
1975: if ( $#$parstack > (-2-$context) ) { $args=$$parstack[$context]; }
1.297 sakharuk 1976: if ( ! $Apache::lonxml::usestyle ) {
1977: $args=$Apache::lonxml::style_values.$args;
1978: }
1.230 albertel 1979: &Apache::lonxml::debug("Args are $args param is $param");
1.213 albertel 1980: if ($case_insensitive) {
1.419 albertel 1981: if (! ($args=~s/(my (?:.*))(\$\Q$param\E[,\)])/$1.lc($2)/ei)) {
1.213 albertel 1982: return undef;
1983: }
1.419 albertel 1984: } elsif ( $args !~ /my .*\$\Q$param\E[,\)]/ ) { return undef; }
1.132 albertel 1985: my $value=&Apache::run::run("{$args;".'return $'.$param.'}',$safeeval); #'
1.230 albertel 1986: &Apache::lonxml::debug("first run is $value");
1.341 albertel 1987: if ($value =~ /^[\$\@\%][a-zA-Z_]\w*$/) {
1.230 albertel 1988: &Apache::lonxml::debug("doing second");
1989: my @result=&Apache::run::run("return $value",$safeeval,1);
1990: if (!defined($result[0])) {
1991: return $value
1992: } else {
1993: if (wantarray) { return @result; } else { return $result[0]; }
1994: }
1.132 albertel 1995: } else {
1996: return $value;
1997: }
1998: }
1999:
1.438 albertel 2000: sub register_insert_xml {
2001: my $parser = HTML::LCParser->new($Apache::lonnet::perlvar{'lonTabDir'}
2002: .'/insertlist.xml');
2003: my ($tagnum,$in_help)=(0,0);
1.442 albertel 2004: my @alltags;
1.438 albertel 2005: my $tag;
2006: while (my $token = $parser->get_token()) {
2007: if ($token->[0] eq 'S') {
2008: my $key;
2009: if ($token->[1] eq 'tag') {
2010: $tag = $token->[2]{'name'};
2011: $insertlist{"$tagnum.tag"} = $tag;
2012: $insertlist{"$tag.num"} = $tagnum;
1.442 albertel 2013: push(@alltags,$tag);
1.438 albertel 2014: } elsif ($in_help && $token->[1] eq 'file') {
2015: $key = $tag.'.helpfile';
2016: } elsif ($in_help && $token->[1] eq 'description') {
2017: $key = $tag.'.helpdesc';
2018: } elsif ($token->[1] eq 'description' ||
2019: $token->[1] eq 'color' ||
2020: $token->[1] eq 'show' ) {
2021: $key = $tag.'.'.$token->[1];
2022: } elsif ($token->[1] eq 'insert_sub') {
2023: $key = $tag.'.function';
2024: } elsif ($token->[1] eq 'help') {
2025: $in_help=1;
2026: } elsif ($token->[1] eq 'allow') {
1.442 albertel 2027: $key = $tag.'.allow';
1.438 albertel 2028: }
2029: if (defined($key)) {
2030: $insertlist{$key} = $parser->get_text();
2031: $insertlist{$key} =~ s/(^\s*|\s*$ )//gx;
2032: }
2033: } elsif ($token->[0] eq 'E') {
2034: if ($token->[1] eq 'tag') {
2035: undef($tag);
2036: $tagnum++;
2037: } elsif ($token->[1] eq 'help') {
2038: undef($in_help);
2039: }
2040: }
2041: }
1.442 albertel 2042:
2043: # parse the allows and ignore tags set to <show>no</show>
2044: foreach my $tag (@alltags) {
1.445 albertel 2045: next if (!exists($insertlist{"$tag.allow"}));
1.442 albertel 2046: my $allow = $insertlist{"$tag.allow"};
2047: foreach my $element (split(',',$allow)) {
2048: $element =~ s/(^\s*|\s*$ )//gx;
1.446 albertel 2049: if (!exists($insertlist{"$element.show"})
2050: || $insertlist{"$element.show"} ne 'no') {
1.442 albertel 2051: push(@{ $insertlist{$tag.'.which'} },$element);
2052: }
2053: }
2054: }
1.438 albertel 2055: }
2056:
2057: sub register_insert {
2058: return ®ister_insert_xml(@_);
2059: # &dump_insertlist('2');
2060: }
2061:
2062: sub dump_insertlist {
2063: my ($ext) = @_;
2064: open(XML,">/tmp/insertlist.xml.$ext");
2065: print XML ("<insertlist>");
2066: my $i=0;
2067:
2068: while (exists($insertlist{"$i.tag"})) {
2069: my $tag = $insertlist{"$i.tag"};
2070: print XML ("
2071: \t<tag name=\"$tag\">");
2072: if (defined($insertlist{"$tag.description"})) {
2073: print XML ("
2074: \t\t<description>".$insertlist{"$tag.description"}."</description>");
2075: }
2076: if (defined($insertlist{"$tag.color"})) {
2077: print XML ("
2078: \t\t<color>".$insertlist{"$tag.color"}."</color>");
2079: }
2080: if (defined($insertlist{"$tag.function"})) {
2081: print XML ("
2082: \t\t<insert_sub>".$insertlist{"$tag.function"}."</insert_sub>");
2083: }
2084: if (defined($insertlist{"$tag.show"})
2085: && $insertlist{"$tag.show"} ne 'yes') {
2086: print XML ("
2087: \t\t<show>".$insertlist{"$tag.show"}."</show>");
2088: }
2089: if (defined($insertlist{"$tag.helpfile"})) {
2090: print XML ("
2091: \t\t<help>
2092: \t\t\t<file>".$insertlist{"$tag.helpfile"}."</file>");
2093: if ($insertlist{"$tag.helpdesc"} ne '') {
2094: print XML ("
2095: \t\t\t<description>".$insertlist{"$tag.helpdesc"}."</description>");
2096: }
2097: print XML ("
2098: \t\t</help>");
2099: }
2100: if (defined($insertlist{"$tag.which"})) {
2101: print XML ("
2102: \t\t<allow>".join(',',sort(@{ $insertlist{"$tag.which"} }))."</allow>");
2103: }
2104: print XML ("
2105: \t</tag>");
2106: $i++;
2107: }
2108: print XML ("\n</insertlist>\n");
2109: close(XML);
2110: }
2111:
1.98 albertel 2112: sub description {
1.437 albertel 2113: my ($token)=@_;
2114: my $tag = &get_tag($token);
2115: return $insertlist{$tag.'.description'};
1.268 bowersj2 2116: }
2117:
2118: # Returns a list containing the help file, and the description
2119: sub helpinfo {
1.437 albertel 2120: my ($token)=@_;
2121: my $tag = &get_tag($token);
2122: return ($insertlist{$tag.'.helpfile'}, $insertlist{$tag.'.helpdesc'});
2123: }
2124:
2125: sub get_tag {
2126: my ($token)=@_;
2127: my $tagnum;
2128: my $tag=$token->[1];
2129: foreach my $namespace (reverse(@Apache::lonxml::namespace)) {
2130: my $testtag = $namespace.'::'.$tag;
2131: $tagnum = $insertlist{"$testtag.num"};
2132: last if (defined($tagnum));
2133: }
2134: if (!defined($tagnum)) {
2135: $tagnum = $Apache::lonxml::insertlist{"$tag.num"};
2136: }
2137: return $insertlist{"$tagnum.tag"};
1.98 albertel 2138: }
1.123 albertel 2139:
1.1 sakharuk 2140: 1;
2141: __END__
1.68 www 2142:
2143:
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