Annotation of loncom/xml/lonxml.pm, revision 1.525
1.2 sakharuk 1: # The LearningOnline Network with CAPA
1.3 sakharuk 2: # XML Parser Module
1.2 sakharuk 3: #
1.525 ! raeburn 4: # $Id: lonxml.pm,v 1.524 2011/11/21 21:45:36 www 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();
1.520 www 115: use Apache::functionplotresponse();
1.79 www 116:
1.462 foxr 117: #==================================== Main subroutine: xmlparse
118:
1.72 albertel 119: #debugging control, to turn on debugging modify the correct handler
1.462 foxr 120:
1.72 albertel 121: $Apache::lonxml::debug=0;
1.206 albertel 122:
123: # keeps count of the number of warnings and errors generated in a parse
124: $warningcount=0;
125: $errorcount=0;
1.72 albertel 126:
127: #path to the directory containing the file currently being processed
128: @pwd=();
129:
130: #these two are used for capturing a subset of the output for later processing,
131: #don't touch them directly use &startredirection and &endredirection
132: @outputstack = ();
133: $redirection = 0;
134:
135: #controls wheter the <import> tag actually does
136: $import = 1;
137: @extlinks=();
138:
139: # meta mode is a bit weird only some output is to be turned off
140: #<output> tag turns metamode off (defined in londefdef.pm)
141: $metamode = 0;
142:
143: # turns on and of run::evaluate actually derefencing var refs
144: $evaluate = 1;
1.7 albertel 145:
1.74 albertel 146: # data structure for eidt mode, determines what tags can go into what other tags
147: %insertlist=();
1.68 www 148:
1.99 albertel 149: # stores the list of active tag namespaces
1.76 albertel 150: @namespace=();
151:
1.448 albertel 152: # stores all Scrit Vars displays for later showing
153: my @script_var_displays=();
154:
1.172 albertel 155: # a pointer the the Apache request object
156: $Apache::lonxml::request='';
157:
1.216 sakharuk 158: # a problem number counter, and check on ether it is used
1.237 sakharuk 159: $Apache::lonxml::counter=1;
1.204 albertel 160: $Apache::lonxml::counter_changed=0;
161:
1.462 foxr 162: # Part counter hash. In analysis mode, the
163: # problems can use this to record which parts increment the counter
164: # by how much. The counter subs will maintain this hash via
165: # their optional part parameters. Note that the assumption is that
166: # analysis is done in one request and therefore it is not necessary to
167: # save this information request-to-request.
168:
169:
170: %Apache::lonxml::counters_per_part = ();
171:
1.212 albertel 172: #internal check on whether to look at style defs
173: $Apache::lonxml::usestyle=1;
1.260 albertel 174:
175: #locations used to store the parameter string for style substitutions
176: $Apache::lonxml::style_values='';
177: $Apache::lonxml::style_end_values='';
1.212 albertel 178:
1.281 albertel 179: #array of ssi calls that need to occur after we are done parsing
180: @Apache::lonxml::ssi_info=();
181:
1.282 albertel 182: #should we do the postag variable interpolation
183: $Apache::lonxml::post_evaluate=1;
184:
1.295 albertel 185: #a header message to emit in the case of any generated warning or errors
186: $Apache::lonxml::warnings_error_header='';
187:
1.396 foxr 188: # Control whether or not LaTeX symbols should be substituted for their
189: # \ style equivalents...this may be turned off e.g. in an verbatim
190: # environment.
191:
192: $Apache::lonxml::substitute_LaTeX_symbols = 1; # Starts out on.
193:
194: sub enable_LaTeX_substitutions {
195: $Apache::lonxml::substitute_LaTeX_symbols = 1;
196: }
197: sub disable_LaTeX_substitutions {
198: $Apache::lonxml::substitute_LaTeX_symbols = 0;
199: }
200:
1.68 www 201: sub xmlend {
1.335 sakharuk 202: my ($target,$parser)=@_;
1.278 www 203: my $mode='xml';
204: my $status='OPEN';
1.368 albertel 205: if ($Apache::lonhomework::parsing_a_problem ||
206: $Apache::lonhomework::parsing_a_task ) {
1.278 www 207: $mode='problem';
208: $status=$Apache::inputtags::status[-1];
209: }
1.362 matthew 210: my $discussion;
1.379 albertel 211: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
212: ['LONCAPA_INTERNAL_no_discussion']);
1.372 albertel 213: if (! exists($env{'form.LONCAPA_INTERNAL_no_discussion'}) ||
214: $env{'form.LONCAPA_INTERNAL_no_discussion'} ne 'true') {
1.362 matthew 215: $discussion=&Apache::lonfeedback::list_discussion($mode,$status);
216: }
1.334 sakharuk 217: if ($target eq 'tex') {
1.335 sakharuk 218: $discussion.='<tex>\keephidden{ENDOFPROBLEM}\vskip 0.5mm\noindent\makebox[\textwidth/$number_of_columns][b]{\hrulefill}\end{document}</tex>';
1.334 sakharuk 219: &Apache::lonxml::newparser($parser,\$discussion,'');
220: return '';
221: }
1.405 albertel 222:
1.407 albertel 223: return $discussion;
1.119 www 224: }
225:
1.48 albertel 226: sub printalltags {
227: my $temp;
228: foreach $temp (sort keys %Apache::lonxml::alltags) {
1.141 albertel 229: &Apache::lonxml::debug("$temp -- ".
230: join(',',@{ $Apache::lonxml::alltags{$temp} }));
1.48 albertel 231: }
232: }
1.31 sakharuk 233:
1.3 sakharuk 234: sub xmlparse {
1.172 albertel 235: my ($request,$target,$content_file_string,$safeinit,%style_for_target) = @_;
1.96 albertel 236:
1.172 albertel 237: &setup_globals($request,$target);
1.232 albertel 238: &Apache::inputtags::initialize_inputtags();
1.370 albertel 239: &Apache::bridgetask::initialize_bridgetask();
1.232 albertel 240: &Apache::outputtags::initialize_outputtags();
241: &Apache::edit::initialize_edit();
1.287 albertel 242: &Apache::londefdef::initialize_londefdef();
1.244 albertel 243:
1.178 www 244: #
245: # do we have a course style file?
246: #
247:
1.372 albertel 248: if ($env{'request.course.id'} && $env{'request.state'} ne 'construct') {
1.178 www 249: my $bodytext=
1.372 albertel 250: $env{'course.'.$env{'request.course.id'}.'.default_xml_style'};
1.178 www 251: if ($bodytext) {
1.337 albertel 252: foreach my $file (split(',',$bodytext)) {
253: my $location=&Apache::lonnet::filelocation('',$file);
254: my $styletext=&Apache::lonnet::getfile($location);
255: if ($styletext ne '-1') {
256: %style_for_target = (%style_for_target,
257: &Apache::style::styleparser($target,$styletext));
258: }
259: }
260: }
1.449 albertel 261: } elsif ($env{'construct.style'}
262: && ($env{'request.state'} eq 'construct')) {
1.372 albertel 263: my $location=&Apache::lonnet::filelocation('',$env{'construct.style'});
1.291 sakharuk 264: my $styletext=&Apache::lonnet::getfile($location);
1.449 albertel 265: if ($styletext ne '-1') {
266: %style_for_target = (%style_for_target,
267: &Apache::style::styleparser($target,$styletext));
268: }
1.178 www 269: }
1.255 sakharuk 270: #&printalltags();
1.16 albertel 271: my @pars = ();
1.372 albertel 272: my $pwd=$env{'request.filename'};
1.23 albertel 273: $pwd =~ s:/[^/]*$::;
274: &newparser(\@pars,\$content_file_string,$pwd);
1.24 sakharuk 275:
1.3 sakharuk 276: my $safeeval = new Safe;
1.40 albertel 277: my $safehole = new Safe::Hole;
1.82 ng 278: &init_safespace($target,$safeeval,$safehole,$safeinit);
1.3 sakharuk 279: #-------------------- Redefinition of the target in the case of compound target
280:
281: ($target, my @tenta) = split('&&',$target);
282:
1.150 albertel 283: my @stack = ();
1.3 sakharuk 284: my @parstack = ();
1.358 albertel 285: &initdepth();
286: &init_alarm();
1.101 albertel 287: my $finaloutput = &inner_xmlparse($target,\@stack,\@parstack,\@pars,
1.394 albertel 288: $safeeval,\%style_for_target,1);
1.255 sakharuk 289:
1.425 albertel 290: if (@stack) {
1.482 bisitz 291: &warning(&mt('At end of file some tags were still left unclosed:').
292: ' <tt><'.join('></tt>, <tt><',reverse(@stack)).
1.425 albertel 293: '></tt>');
294: }
1.372 albertel 295: if ($env{'request.uri'}) {
296: &writeallows($env{'request.uri'});
1.125 www 297: }
1.281 albertel 298: &do_registered_ssi();
1.204 albertel 299: if ($Apache::lonxml::counter_changed) { &store_counter() }
1.393 albertel 300:
301: &clean_safespace($safeeval);
302:
1.448 albertel 303: if (@script_var_displays) {
304: $finaloutput .= join('',@script_var_displays);
305: undef(@script_var_displays);
306: }
1.469 albertel 307: &init_state();
1.372 albertel 308: if ($env{'form.return_only_error_and_warning_counts'}) {
1.473 www 309: if ($env{'request.filename'}=~/\.(html|htm|xml)$/i) {
310: my $error=&verify_html($content_file_string);
311: if ($error) { $errorcount++; }
312: }
1.361 www 313: return "$errorcount:$warningcount";
314: }
1.3 sakharuk 315: return $finaloutput;
1.106 www 316: }
317:
1.191 albertel 318: sub latex_special_symbols {
1.272 albertel 319: my ($string,$where)=@_;
1.396 foxr 320: #
321: # If e.g. in verbatim mode, then don't substitute.
322: # but return original string.
323: #
324: if (!($Apache::lonxml::substitute_LaTeX_symbols)) {
325: return $string;
326: }
1.235 sakharuk 327: if ($where eq 'header') {
1.414 foxr 328: $string =~ s/\\/\$\\backslash\$/g; # \ -> $\backslash$ per LaTex line by line pg 10.
1.311 albertel 329: $string =~ s/(\$|%|\{|\})/\\$1/g;
330: $string=&Apache::lonprintout::character_chart($string);
331: # any & or # leftover should be safe to just escape
332: $string=~s/([^\\])\&/$1\\\&/g;
333: $string=~s/([^\\])\#/$1\\\#/g;
1.415 foxr 334: $string =~ s/_/\\_/g; # _ -> \_
335: $string =~ s/\^/\\\^{}/g; # ^ -> \^{}
1.229 sakharuk 336: } else {
1.312 albertel 337: $string=~s/\\/\\ensuremath{\\backslash}/g;
1.367 albertel 338: $string=~s/\\\%|\%/\\\%/g;
339: $string=~s/\\{|{/\\{/g;
340: $string=~s/\\}|}/\\}/g;
1.378 albertel 341: $string=~s/\\ensuremath\\{\\backslash\\}/\\ensuremath{\\backslash}/g;
1.367 albertel 342: $string=~s/\\\$|\$/\\\$/g;
343: $string=~s/\\\_|\_/\\\_/g;
1.313 albertel 344: $string=~s/([^\\]|^)(\~|\^)/$1\\$2\\strut /g;
1.310 sakharuk 345: $string=~s/(>|<)/\\ensuremath\{$1\}/g; #more or less
1.311 albertel 346: $string=&Apache::lonprintout::character_chart($string);
347: # any & or # leftover should be safe to just escape
1.367 albertel 348: $string=~s/\\\&|\&/\\\&/g;
349: $string=~s/\\\#|\#/\\\#/g;
1.332 sakharuk 350: $string=~s/\|/\$\\mid\$/g;
1.310 sakharuk 351: #single { or } How to escape?
1.229 sakharuk 352: }
1.272 albertel 353: return $string;
1.188 sakharuk 354: }
355:
1.101 albertel 356: sub inner_xmlparse {
1.394 albertel 357: my ($target,$stack,$parstack,$pars,$safeeval,$style_for_target,$start)=@_;
1.101 albertel 358: my $finaloutput = '';
359: my $result;
360: my $token;
1.258 albertel 361: my $dontpop=0;
1.389 albertel 362: my $startredirection = $Apache::lonxml::redirection;
1.101 albertel 363: while ( $#$pars > -1 ) {
364: while ($token = $$pars['-1']->get_token) {
1.261 albertel 365: if (($token->[0] eq 'T') || ($token->[0] eq 'C') ) {
1.101 albertel 366: if ($metamode<1) {
1.190 albertel 367: my $text=$token->[1];
1.193 albertel 368: if ($token->[0] eq 'C' && $target eq 'tex') {
1.239 sakharuk 369: $text = '';
370: # $text = '%'.$text."\n";
1.182 sakharuk 371: }
1.190 albertel 372: $result.=$text;
1.101 albertel 373: }
1.261 albertel 374: } elsif (($token->[0] eq 'D')) {
375: if ($metamode<1 && $target eq 'web') {
376: my $text=$token->[1];
377: $result.=$text;
378: }
1.101 albertel 379: } elsif ($token->[0] eq 'PI') {
1.261 albertel 380: if ($metamode<1 && $target eq 'web') {
1.101 albertel 381: $result=$token->[2];
382: }
383: } elsif ($token->[0] eq 'S') {
1.140 albertel 384: # add tag to stack
1.101 albertel 385: push (@$stack,$token->[1]);
386: # add parameters list to another stack
387: push (@$parstack,&parstring($token));
1.140 albertel 388: &increasedepth($token);
1.212 albertel 389: if ($Apache::lonxml::usestyle &&
390: exists($$style_for_target{$token->[1]})) {
391: $Apache::lonxml::usestyle=0;
392: my $string=$$style_for_target{$token->[1]}.
393: '<LONCAPA_INTERNAL_TURN_STYLE_ON />';
394: &Apache::lonxml::newparser($pars,\$string);
1.257 albertel 395: $Apache::lonxml::style_values=$$parstack[-1];
1.259 albertel 396: $Apache::lonxml::style_end_values=$$parstack[-1];
1.101 albertel 397: } else {
398: $result = &callsub("start_$token->[1]", $target, $token, $stack,
399: $parstack, $pars, $safeeval, $style_for_target);
1.140 albertel 400: }
1.101 albertel 401: } elsif ($token->[0] eq 'E') {
1.212 albertel 402: if ($Apache::lonxml::usestyle &&
403: exists($$style_for_target{'/'."$token->[1]"})) {
404: $Apache::lonxml::usestyle=0;
405: my $string=$$style_for_target{'/'.$token->[1]}.
1.258 albertel 406: '<LONCAPA_INTERNAL_TURN_STYLE_ON end="'.$token->[1].'" />';
1.212 albertel 407: &Apache::lonxml::newparser($pars,\$string);
1.259 albertel 408: $Apache::lonxml::style_values=$Apache::lonxml::style_end_values;
409: $Apache::lonxml::style_end_values='';
1.258 albertel 410: $dontpop=1;
1.101 albertel 411: } else {
1.258 albertel 412: #clear out any tags that didn't end
413: while ($token->[1] ne $$stack['-1'] && ($#$stack > -1)) {
414: my $lasttag=$$stack[-1];
1.317 albertel 415: if ($token->[1] =~ /^\Q$lasttag\E$/i) {
1.483 bisitz 416: &Apache::lonxml::warning(&mt('Using tag [_1] on line [_2] as end tag to [_3]','</'.$token->[1].'>','.$token->[3].','<'.$$stack[-1].'>'));
1.258 albertel 417: last;
418: } else {
1.483 bisitz 419: &Apache::lonxml::warning(&mt('Found tag [_1] on line [_2] when looking for [_3] in file.','</'.$token->[1].'>',$token->[3],'</'.$$stack[-1].'>'));
1.258 albertel 420: &end_tag($stack,$parstack,$token);
421: }
422: }
423: $result = &callsub("end_$token->[1]", $target, $token, $stack,
424: $parstack, $pars,$safeeval, $style_for_target);
1.101 albertel 425: }
426: } else {
427: &Apache::lonxml::error("Unknown token event :$token->[0]:$token->[1]:");
428: }
429: #evaluate variable refs in result
1.282 albertel 430: if ($Apache::lonxml::post_evaluate &&$result ne "") {
1.257 albertel 431: my $extras;
432: if (!$Apache::lonxml::usestyle) {
433: $extras=$Apache::lonxml::style_values;
434: }
1.488 raeburn 435: if ( $#$parstack > -1 ) {
436: $result=&Apache::run::evaluate($result,$safeeval,$extras.$$parstack[-1]);
437: } else {
438: $result= &Apache::run::evaluate($result,$safeeval,$extras);
1.487 raeburn 439: }
1.163 albertel 440: }
1.282 albertel 441: $Apache::lonxml::post_evaluate=1;
442:
1.190 albertel 443: if (($token->[0] eq 'T') || ($token->[0] eq 'C') || ($token->[0] eq 'D') ) {
1.249 albertel 444: #Style file definitions should be correct
1.250 albertel 445: if ($target eq 'tex' && ($Apache::lonxml::usestyle)) {
1.311 albertel 446: $result=&latex_special_symbols($result);
1.249 albertel 447: }
1.190 albertel 448: }
449:
1.169 albertel 450: if ($Apache::lonxml::redirection) {
451: $Apache::lonxml::outputstack['-1'] .= $result;
452: } else {
453: $finaloutput.=$result;
454: }
455: $result = '';
456:
1.258 albertel 457: if ($token->[0] eq 'E' && !$dontpop) {
1.101 albertel 458: &end_tag($stack,$parstack,$token);
459: }
1.258 albertel 460: $dontpop=0;
1.224 albertel 461: }
1.212 albertel 462: if ($#$pars > -1) {
463: pop @$pars;
464: pop @Apache::lonxml::pwd;
465: }
1.101 albertel 466: }
467:
468: # if ($target eq 'meta') {
469: # $finaloutput.=&endredirection;
470: # }
471:
1.394 albertel 472: if ( $start && $target eq 'grade') { &endredirection(); }
1.389 albertel 473: if ( $Apache::lonxml::redirection > $startredirection) {
474: while ($Apache::lonxml::redirection > $startredirection) {
475: $finaloutput .= &endredirection();
1.387 albertel 476: }
477: }
1.101 albertel 478: if (($ENV{'QUERY_STRING'}) && ($target eq 'web')) {
479: $finaloutput=&afterburn($finaloutput);
1.509 www 480: }
481: if ($target eq 'modified') {
482: # if modfied, handle startpart and endpart
483: $finaloutput=~s/\<startpartmarker[^\>]*\>(.*)\<endpartmarker[^\>]*\>/<part>$1<\/part>/gs;
1.216 sakharuk 484: }
1.101 albertel 485: return $finaloutput;
486: }
1.67 www 487:
1.318 matthew 488: ##
489: ## Looks to see if there is a subroutine defined for this tag. If so, call it,
490: ## otherwise do not call it as we do not know what it is.
491: ##
1.7 albertel 492: sub callsub {
1.84 albertel 493: my ($sub,$target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.7 albertel 494: my $currentstring='';
1.72 albertel 495: my $nodefault;
1.7 albertel 496: {
1.59 albertel 497: my $sub1;
1.7 albertel 498: no strict 'refs';
1.68 www 499: my $tag=$token->[1];
1.236 www 500: # get utterly rid of extended html tags
501: if ($tag=~/^x\-/i) { return ''; }
1.141 albertel 502: my $space=$Apache::lonxml::alltags{$tag}[-1];
1.68 www 503: if (!$space) {
1.141 albertel 504: $tag=~tr/A-Z/a-z/;
1.68 www 505: $sub=~tr/A-Z/a-z/;
1.141 albertel 506: $space=$Apache::lonxml::alltags{$tag}[-1]
1.68 www 507: }
1.97 albertel 508:
509: my $deleted=0;
510: if (($token->[0] eq 'S') && ($target eq 'modified')) {
511: $deleted=&Apache::edit::handle_delete($space,$target,$token,$tagstack,
512: $parstack,$parser,$safeeval,
513: $style);
514: }
515: if (!$deleted) {
516: if ($space) {
1.220 albertel 517: #&Apache::lonxml::debug("Calling sub $sub in $space $metamode");
1.97 albertel 518: $sub1="$space\:\:$sub";
519: ($currentstring,$nodefault) = &$sub1($target,$token,$tagstack,
520: $parstack,$parser,$safeeval,
521: $style);
522: } else {
1.318 matthew 523: if ($target eq 'tex') {
524: # throw away tag name
525: return '';
526: }
1.220 albertel 527: #&Apache::lonxml::debug("NOT Calling sub $sub in $space $metamode");
1.97 albertel 528: if ($metamode <1) {
529: if (defined($token->[4]) && ($metamode < 1)) {
530: $currentstring = $token->[4];
531: } else {
532: $currentstring = $token->[2];
533: }
1.62 sakharuk 534: }
1.7 albertel 535: }
1.97 albertel 536: # &Apache::lonxml::debug("nodefalt:$nodefault:");
537: if ($currentstring eq '' && $nodefault eq '') {
538: if ($target eq 'edit') {
1.220 albertel 539: #&Apache::lonxml::debug("doing default edit for $token->[1]");
1.97 albertel 540: if ($token->[0] eq 'S') {
541: $currentstring = &Apache::edit::tag_start($target,$token);
542: } elsif ($token->[0] eq 'E') {
543: $currentstring = &Apache::edit::tag_end($target,$token);
544: }
1.441 albertel 545: }
546: }
547: if ($target eq 'modified' && $nodefault eq '') {
548: if ($currentstring eq '') {
549: if ($token->[0] eq 'S') {
550: $currentstring = $token->[4];
551: } elsif ($token->[0] eq 'E') {
552: $currentstring = $token->[2];
553: } else {
554: $currentstring = $token->[2];
555: }
556: }
1.97 albertel 557: if ($token->[0] eq 'S') {
1.447 albertel 558: $currentstring.=&Apache::edit::handle_insert();
1.210 www 559: } elsif ($token->[0] eq 'E') {
1.447 albertel 560: $currentstring.=&Apache::edit::handle_insertafter($token->[1]);
1.97 albertel 561: }
1.72 albertel 562: }
1.7 albertel 563: }
564: use strict 'refs';
565: }
566: return $currentstring;
1.82 ng 567: }
568:
1.465 albertel 569: {
570: my %state;
571:
572: sub init_state {
573: undef(%state);
574: }
575:
576: sub set_state {
577: my ($key,$value) = @_;
578: $state{$key} = $value;
579: return $value;
580: }
581: sub get_state {
582: my ($key) = @_;
583: return $state{$key};
584: }
585: }
586:
1.96 albertel 587: sub setup_globals {
1.172 albertel 588: my ($request,$target)=@_;
589: $Apache::lonxml::request=$request;
1.205 www 590: $errorcount=0;
591: $warningcount=0;
1.490 www 592: $Apache::lonxml::internal_error=0;
1.207 albertel 593: $Apache::lonxml::default_homework_loaded=0;
1.212 albertel 594: $Apache::lonxml::usestyle=1;
1.204 albertel 595: &init_counter();
1.462 foxr 596: &clear_bubble_lines_for_part();
1.465 albertel 597: &init_state();
1.469 albertel 598: &set_state('target',$target);
1.101 albertel 599: @Apache::lonxml::pwd=();
1.124 albertel 600: @Apache::lonxml::extlinks=();
1.448 albertel 601: @script_var_displays=();
1.281 albertel 602: @Apache::lonxml::ssi_info=();
1.282 albertel 603: $Apache::lonxml::post_evaluate=1;
1.295 albertel 604: $Apache::lonxml::warnings_error_header='';
1.397 albertel 605: $Apache::lonxml::substitute_LaTeX_symbols = 1;
1.96 albertel 606: if ($target eq 'meta') {
607: $Apache::lonxml::redirection = 0;
608: $Apache::lonxml::metamode = 1;
609: $Apache::lonxml::evaluate = 1;
610: $Apache::lonxml::import = 0;
1.129 albertel 611: } elsif ($target eq 'answer') {
612: $Apache::lonxml::redirection = 0;
613: $Apache::lonxml::metamode = 1;
614: $Apache::lonxml::evaluate = 1;
615: $Apache::lonxml::import = 1;
1.96 albertel 616: } elsif ($target eq 'grade') {
1.387 albertel 617: &startredirection(); #ended in inner_xmlparse on exit
1.96 albertel 618: $Apache::lonxml::metamode = 0;
619: $Apache::lonxml::evaluate = 1;
620: $Apache::lonxml::import = 1;
621: } elsif ($target eq 'modified') {
622: $Apache::lonxml::redirection = 0;
623: $Apache::lonxml::metamode = 0;
624: $Apache::lonxml::evaluate = 0;
625: $Apache::lonxml::import = 0;
626: } elsif ($target eq 'edit') {
627: $Apache::lonxml::redirection = 0;
628: $Apache::lonxml::metamode = 0;
629: $Apache::lonxml::evaluate = 0;
630: $Apache::lonxml::import = 0;
1.163 albertel 631: } elsif ($target eq 'analyze') {
632: $Apache::lonxml::redirection = 0;
633: $Apache::lonxml::metamode = 0;
634: $Apache::lonxml::evaluate = 1;
635: $Apache::lonxml::import = 1;
1.96 albertel 636: } else {
637: $Apache::lonxml::redirection = 0;
638: $Apache::lonxml::metamode = 0;
639: $Apache::lonxml::evaluate = 1;
640: $Apache::lonxml::import = 1;
641: }
642: }
643:
1.82 ng 644: sub init_safespace {
645: my ($target,$safeeval,$safehole,$safeinit) = @_;
1.511 foxr 646: $safeeval->reval('use Math::Complex;');
647: $safeeval->reval('use LaTeX::Table;');
1.393 albertel 648: $safeeval->deny_only(':dangerous');
1.383 albertel 649: $safeeval->permit_only(":default");
1.82 ng 650: $safeeval->permit("entereval");
651: $safeeval->permit(":base_math");
652: $safeeval->permit("sort");
1.286 albertel 653: $safeeval->permit("time");
1.480 www 654: $safeeval->permit("caller");
1.371 albertel 655: $safeeval->deny("rand");
656: $safeeval->deny("srand");
1.82 ng 657: $safeeval->deny(":base_io");
1.102 albertel 658: $safehole->wrap(\&Apache::scripttag::xmlparse,$safeeval,'&xmlparse');
1.251 albertel 659: $safehole->wrap(\&Apache::outputtags::multipart,$safeeval,'&multipart');
1.82 ng 660: $safehole->wrap(\&Apache::lonnet::EXT,$safeeval,'&EXT');
1.324 albertel 661: $safehole->wrap(\&Apache::chemresponse::chem_standard_order,$safeeval,
662: '&chem_standard_order');
1.369 albertel 663: $safehole->wrap(\&Apache::response::check_status,$safeeval,'&check_status');
1.471 bisitz 664: $safehole->wrap(\&Apache::response::implicit_multiplication,$safeeval,'&implicit_multiplication');
1.324 albertel 665:
1.431 www 666: $safehole->wrap(\&Apache::lonmaxima::maxima_eval,$safeeval,'&maxima_eval');
1.432 www 667: $safehole->wrap(\&Apache::lonmaxima::maxima_check,$safeeval,'&maxima_check');
1.433 albertel 668: $safehole->wrap(\&Apache::lonmaxima::maxima_cas_formula_fix,$safeeval,
669: '&maxima_cas_formula_fix');
670:
1.494 www 671: $safehole->wrap(\&Apache::lonr::r_eval,$safeeval,'&r_eval');
1.497 www 672: $safehole->wrap(\&Apache::lonr::Rentry,$safeeval,'&Rentry');
673: $safehole->wrap(\&Apache::lonr::Rarray,$safeeval,'&Rarray');
1.494 www 674: $safehole->wrap(\&Apache::lonr::r_check,$safeeval,'&r_check');
675: $safehole->wrap(\&Apache::lonr::r_cas_formula_fix,$safeeval,
676: '&r_cas_formula_fix');
677:
1.433 albertel 678: $safehole->wrap(\&Apache::caparesponse::capa_formula_fix,$safeeval,
679: '&capa_formula_fix');
1.431 www 680:
1.480 www 681: $safehole->wrap(\&Apache::lonlocal::locallocaltime,$safeeval,
682: '&locallocaltime');
683:
1.82 ng 684: $safehole->wrap(\&Math::Cephes::asin,$safeeval,'&asin');
685: $safehole->wrap(\&Math::Cephes::acos,$safeeval,'&acos');
686: $safehole->wrap(\&Math::Cephes::atan,$safeeval,'&atan');
687: $safehole->wrap(\&Math::Cephes::sinh,$safeeval,'&sinh');
688: $safehole->wrap(\&Math::Cephes::cosh,$safeeval,'&cosh');
689: $safehole->wrap(\&Math::Cephes::tanh,$safeeval,'&tanh');
690: $safehole->wrap(\&Math::Cephes::asinh,$safeeval,'&asinh');
691: $safehole->wrap(\&Math::Cephes::acosh,$safeeval,'&acosh');
692: $safehole->wrap(\&Math::Cephes::atanh,$safeeval,'&atanh');
693: $safehole->wrap(\&Math::Cephes::erf,$safeeval,'&erf');
694: $safehole->wrap(\&Math::Cephes::erfc,$safeeval,'&erfc');
695: $safehole->wrap(\&Math::Cephes::j0,$safeeval,'&j0');
696: $safehole->wrap(\&Math::Cephes::j1,$safeeval,'&j1');
697: $safehole->wrap(\&Math::Cephes::jn,$safeeval,'&jn');
698: $safehole->wrap(\&Math::Cephes::jv,$safeeval,'&jv');
699: $safehole->wrap(\&Math::Cephes::y0,$safeeval,'&y0');
700: $safehole->wrap(\&Math::Cephes::y1,$safeeval,'&y1');
701: $safehole->wrap(\&Math::Cephes::yn,$safeeval,'&yn');
702: $safehole->wrap(\&Math::Cephes::yv,$safeeval,'&yv');
1.215 albertel 703:
704: $safehole->wrap(\&Math::Cephes::bdtr ,$safeeval,'&bdtr' );
705: $safehole->wrap(\&Math::Cephes::bdtrc ,$safeeval,'&bdtrc' );
706: $safehole->wrap(\&Math::Cephes::bdtri ,$safeeval,'&bdtri' );
707: $safehole->wrap(\&Math::Cephes::btdtr ,$safeeval,'&btdtr' );
708: $safehole->wrap(\&Math::Cephes::chdtr ,$safeeval,'&chdtr' );
709: $safehole->wrap(\&Math::Cephes::chdtrc,$safeeval,'&chdtrc');
710: $safehole->wrap(\&Math::Cephes::chdtri,$safeeval,'&chdtri');
711: $safehole->wrap(\&Math::Cephes::fdtr ,$safeeval,'&fdtr' );
712: $safehole->wrap(\&Math::Cephes::fdtrc ,$safeeval,'&fdtrc' );
713: $safehole->wrap(\&Math::Cephes::fdtri ,$safeeval,'&fdtri' );
714: $safehole->wrap(\&Math::Cephes::gdtr ,$safeeval,'&gdtr' );
715: $safehole->wrap(\&Math::Cephes::gdtrc ,$safeeval,'&gdtrc' );
716: $safehole->wrap(\&Math::Cephes::nbdtr ,$safeeval,'&nbdtr' );
717: $safehole->wrap(\&Math::Cephes::nbdtrc,$safeeval,'&nbdtrc');
718: $safehole->wrap(\&Math::Cephes::nbdtri,$safeeval,'&nbdtri');
719: $safehole->wrap(\&Math::Cephes::ndtr ,$safeeval,'&ndtr' );
720: $safehole->wrap(\&Math::Cephes::ndtri ,$safeeval,'&ndtri' );
721: $safehole->wrap(\&Math::Cephes::pdtr ,$safeeval,'&pdtr' );
722: $safehole->wrap(\&Math::Cephes::pdtrc ,$safeeval,'&pdtrc' );
723: $safehole->wrap(\&Math::Cephes::pdtri ,$safeeval,'&pdtri' );
724: $safehole->wrap(\&Math::Cephes::stdtr ,$safeeval,'&stdtr' );
725: $safehole->wrap(\&Math::Cephes::stdtri,$safeeval,'&stdtri');
726:
1.383 albertel 727: $safehole->wrap(\&Math::Cephes::Matrix::mat,$safeeval,'&mat');
728: $safehole->wrap(\&Math::Cephes::Matrix::new,$safeeval,
729: '&Math::Cephes::Matrix::new');
730: $safehole->wrap(\&Math::Cephes::Matrix::coef,$safeeval,
731: '&Math::Cephes::Matrix::coef');
732: $safehole->wrap(\&Math::Cephes::Matrix::clr,$safeeval,
733: '&Math::Cephes::Matrix::clr');
734: $safehole->wrap(\&Math::Cephes::Matrix::add,$safeeval,
735: '&Math::Cephes::Matrix::add');
736: $safehole->wrap(\&Math::Cephes::Matrix::sub,$safeeval,
737: '&Math::Cephes::Matrix::sub');
738: $safehole->wrap(\&Math::Cephes::Matrix::mul,$safeeval,
739: '&Math::Cephes::Matrix::mul');
740: $safehole->wrap(\&Math::Cephes::Matrix::div,$safeeval,
741: '&Math::Cephes::Matrix::div');
742: $safehole->wrap(\&Math::Cephes::Matrix::inv,$safeeval,
743: '&Math::Cephes::Matrix::inv');
744: $safehole->wrap(\&Math::Cephes::Matrix::transp,$safeeval,
745: '&Math::Cephes::Matrix::transp');
746: $safehole->wrap(\&Math::Cephes::Matrix::simq,$safeeval,
747: '&Math::Cephes::Matrix::simq');
748: $safehole->wrap(\&Math::Cephes::Matrix::mat_to_vec,$safeeval,
749: '&Math::Cephes::Matrix::mat_to_vec');
750: $safehole->wrap(\&Math::Cephes::Matrix::vec_to_mat,$safeeval,
751: '&Math::Cephes::Matrix::vec_to_mat');
752: $safehole->wrap(\&Math::Cephes::Matrix::check,$safeeval,
753: '&Math::Cephes::Matrix::check');
754: $safehole->wrap(\&Math::Cephes::Matrix::check,$safeeval,
755: '&Math::Cephes::Matrix::check');
756:
1.215 albertel 757: # $safehole->wrap(\&Math::Cephes::new_fract,$safeeval,'&new_fract');
758: # $safehole->wrap(\&Math::Cephes::radd,$safeeval,'&radd');
759: # $safehole->wrap(\&Math::Cephes::rsub,$safeeval,'&rsub');
760: # $safehole->wrap(\&Math::Cephes::rmul,$safeeval,'&rmul');
761: # $safehole->wrap(\&Math::Cephes::rdiv,$safeeval,'&rdiv');
762: # $safehole->wrap(\&Math::Cephes::euclid,$safeeval,'&euclid');
763:
1.91 ng 764: $safehole->wrap(\&Math::Random::random_beta,$safeeval,'&math_random_beta');
765: $safehole->wrap(\&Math::Random::random_chi_square,$safeeval,'&math_random_chi_square');
766: $safehole->wrap(\&Math::Random::random_exponential,$safeeval,'&math_random_exponential');
767: $safehole->wrap(\&Math::Random::random_f,$safeeval,'&math_random_f');
768: $safehole->wrap(\&Math::Random::random_gamma,$safeeval,'&math_random_gamma');
769: $safehole->wrap(\&Math::Random::random_multivariate_normal,$safeeval,'&math_random_multivariate_normal');
770: $safehole->wrap(\&Math::Random::random_multinomial,$safeeval,'&math_random_multinomial');
771: $safehole->wrap(\&Math::Random::random_noncentral_chi_square,$safeeval,'&math_random_noncentral_chi_square');
772: $safehole->wrap(\&Math::Random::random_noncentral_f,$safeeval,'&math_random_noncentral_f');
773: $safehole->wrap(\&Math::Random::random_normal,$safeeval,'&math_random_normal');
774: $safehole->wrap(\&Math::Random::random_permutation,$safeeval,'&math_random_permutation');
1.93 ng 775: $safehole->wrap(\&Math::Random::random_permuted_index,$safeeval,'&math_random_permuted_index');
1.91 ng 776: $safehole->wrap(\&Math::Random::random_uniform,$safeeval,'&math_random_uniform');
777: $safehole->wrap(\&Math::Random::random_poisson,$safeeval,'&math_random_poisson');
778: $safehole->wrap(\&Math::Random::random_uniform_integer,$safeeval,'&math_random_uniform_integer');
779: $safehole->wrap(\&Math::Random::random_negative_binomial,$safeeval,'&math_random_negative_binomial');
780: $safehole->wrap(\&Math::Random::random_binomial,$safeeval,'&math_random_binomial');
781: $safehole->wrap(\&Math::Random::random_seed_from_phrase,$safeeval,'&random_seed_from_phrase');
782: $safehole->wrap(\&Math::Random::random_set_seed_from_phrase,$safeeval,'&random_set_seed_from_phrase');
783: $safehole->wrap(\&Math::Random::random_get_seed,$safeeval,'&random_get_seed');
784: $safehole->wrap(\&Math::Random::random_set_seed,$safeeval,'&random_set_seed');
1.458 albertel 785: $safehole->wrap(\&Apache::loncommon::languages,$safeeval,'&languages');
1.305 albertel 786: $safehole->wrap(\&Apache::lonxml::error,$safeeval,'&LONCAPA_INTERNAL_ERROR');
1.311 albertel 787: $safehole->wrap(\&Apache::lonxml::debug,$safeeval,'&LONCAPA_INTERNAL_DEBUG');
1.420 albertel 788: $safehole->wrap(\&Apache::lonnet::logthis,$safeeval,'&LONCAPA_INTERNAL_LOGTHIS');
789: $safehole->wrap(\&Apache::inputtags::finalizeawards,$safeeval,'&LONCAPA_INTERNAL_FINALIZEAWARDS');
1.322 albertel 790: $safehole->wrap(\&Apache::caparesponse::get_sigrange,$safeeval,'&LONCAPA_INTERNAL_get_sigrange');
1.521 www 791: $safehole->wrap(\&Apache::functionplotresponse::fpr_val,$safeeval,'&fpr_val');
1.520 www 792: $safehole->wrap(\&Apache::functionplotresponse::fpr_f,$safeeval,'&fpr_f');
793: $safehole->wrap(\&Apache::functionplotresponse::fpr_dfdx,$safeeval,'&fpr_dfdx');
794: $safehole->wrap(\&Apache::functionplotresponse::fpr_d2fdx2,$safeeval,'&fpr_d2fdx2');
1.524 www 795: $safehole->wrap(\&Apache::functionplotresponse::fpr_vectorcoords,$safeeval,'&fpr_vectorcoords');
796: $safehole->wrap(\&Apache::functionplotresponse::fpr_objectcoords,$safeeval,'&fpr_objectcoords');
797: $safehole->wrap(\&Apache::functionplotresponse::fpr_vectorlength,$safeeval,'&fpr_vectorlength');
798: $safehole->wrap(\&Apache::functionplotresponse::fpr_vectorangle,$safeeval,'&fpr_vectorangle');
1.520 www 799:
1.430 albertel 800: # use Data::Dumper;
801: # $safehole->wrap(\&Data::Dumper::Dumper,$safeeval,'&LONCAPA_INTERNAL_Dumper');
1.82 ng 802: #need to inspect this class of ops
803: # $safeeval->deny(":base_orig");
1.331 albertel 804: $safeeval->permit("require");
1.91 ng 805: $safeinit .= ';$external::target="'.$target.'";';
1.82 ng 806: &Apache::run::run($safeinit,$safeeval);
1.373 albertel 807: &initialize_rndseed($safeeval);
808: }
1.303 albertel 809:
1.393 albertel 810: sub clean_safespace {
811: my ($safeeval) = @_;
812: delete_package_recurse($safeeval->{Root});
813: }
814:
815: sub delete_package_recurse {
816: my ($package) = @_;
817: my @subp;
818: {
819: no strict 'refs';
820: while (my ($key,$val) = each(%{*{"$package\::"}})) {
821: if (!defined($val)) { next; }
822: local (*ENTRY) = $val;
823: if (defined *ENTRY{HASH} && $key =~ /::$/ &&
824: $key ne "main::" && $key ne "<none>::")
825: {
826: my ($p) = $package ne "main" ? "$package\::" : "";
827: ($p .= $key) =~ s/::$//;
828: push(@subp,$p);
829: }
830: }
831: }
832: foreach my $p (@subp) {
833: delete_package_recurse($p);
834: }
835: Symbol::delete_package($package);
836: }
837:
1.373 albertel 838: sub initialize_rndseed {
839: my ($safeeval)=@_;
840: my $rndseed;
1.423 albertel 841: my ($symb,$courseid,$domain,$name) = &Apache::lonnet::whichuser();
1.373 albertel 842: $rndseed=&Apache::lonnet::rndseed($symb,$courseid,$domain,$name);
843: my $safeinit = '$external::randomseed="'.$rndseed.'";';
844: &Apache::lonxml::debug("Setting rndseed to $rndseed");
845: &Apache::run::run($safeinit,$safeeval);
1.207 albertel 846: }
847:
848: sub default_homework_load {
849: my ($safeeval)=@_;
850: &Apache::lonxml::debug('Loading default_homework');
1.522 raeburn 851: my $default=&Apache::lonnet::getfile($Apache::lonnet::perlvar{'lonIncludes'}.
852: '/default_homework.lcpm');
1.241 albertel 853: if ($default eq -1) {
1.207 albertel 854: &Apache::lonxml::error("<b>Unable to find <i>default_homework.lcpm</i></b>");
855: } else {
856: &Apache::run::run($default,$safeeval);
857: $Apache::lonxml::default_homework_loaded=1;
858: }
1.17 albertel 859: }
860:
1.358 albertel 861: {
862: my $alarm_depth;
863: sub init_alarm {
864: alarm(0);
865: $alarm_depth=0;
866: }
867:
868: sub start_alarm {
869: if ($alarm_depth<1) {
870: my $old=alarm($Apache::lonnet::perlvar{'lonScriptTimeout'});
871: if ($old) {
872: &Apache::lonxml::error("Cancelled an alarm of $old, this shouldn't occur.");
873: }
874: }
875: $alarm_depth++;
876: }
877:
878: sub end_alarm {
879: $alarm_depth--;
880: if ($alarm_depth<1) { alarm(0); }
881: }
882: }
1.328 albertel 883: my $metamode_was;
1.55 albertel 884: sub startredirection {
1.328 albertel 885: if (!$Apache::lonxml::redirection) {
886: $metamode_was=$Apache::lonxml::metamode;
887: }
888: $Apache::lonxml::metamode=0;
889: $Apache::lonxml::redirection++;
890: push (@Apache::lonxml::outputstack, '');
1.55 albertel 891: }
892:
893: sub endredirection {
1.328 albertel 894: if (!$Apache::lonxml::redirection) {
1.380 www 895: &Apache::lonxml::error("Endredirection was called before a startredirection, perhaps you have unbalanced tags. Some debugging information:".join ":",caller);
1.328 albertel 896: return '';
897: }
898: $Apache::lonxml::redirection--;
899: if (!$Apache::lonxml::redirection) {
900: $Apache::lonxml::metamode=$metamode_was;
901: }
902: pop @Apache::lonxml::outputstack;
1.97 albertel 903: }
1.459 albertel 904: sub in_redirection {
905: return ($Apache::lonxml::redirection > 0)
906: }
1.97 albertel 907:
908: sub end_tag {
909: my ($tagstack,$parstack,$token)=@_;
910: pop(@$tagstack);
911: pop(@$parstack);
912: &decreasedepth($token);
1.55 albertel 913: }
914:
1.17 albertel 915: sub initdepth {
916: @Apache::lonxml::depthcounter=();
1.439 albertel 917: undef($Apache::lonxml::last_depth_count);
1.17 albertel 918: }
919:
1.438 albertel 920:
1.339 albertel 921: my @timers;
922: my $lasttime;
1.438 albertel 923: # @Apache::lonxml::depthcounter -> count of tags that exist so
924: # far at each level
1.439 albertel 925: # $Apache::lonxml::last_depth_count -> when ascending, need to
926: # remember the count for the level below the current level (for
927: # example going from 1_2 -> 1 -> 1_3 need to remember the 2 )
1.438 albertel 928:
1.17 albertel 929: sub increasedepth {
1.19 albertel 930: my ($token) = @_;
1.439 albertel 931: push(@Apache::lonxml::depthcounter,$Apache::lonxml::last_depth_count+1);
932: undef($Apache::lonxml::last_depth_count);
1.340 albertel 933: my $time;
934: if ($Apache::lonxml::debug eq "1") {
935: push(@timers,[&gettimeofday()]);
936: $time=&tv_interval($lasttime);
937: $lasttime=[&gettimeofday()];
938: }
1.439 albertel 939: my $spacing=' 'x($#Apache::lonxml::depthcounter);
1.438 albertel 940: $Apache::lonxml::curdepth=join('_',@Apache::lonxml::depthcounter);
1.439 albertel 941: # &Apache::lonxml::debug("s$spacing$Apache::lonxml::depth : $Apache::lonxml::olddepth : $Apache::lonxml::curdepth : $token->[1] : $time");
1.54 albertel 942: #print "<br />s $Apache::lonxml::depth : $Apache::lonxml::olddepth : $curdepth : $token->[1]\n";
1.17 albertel 943: }
944:
945: sub decreasedepth {
1.19 albertel 946: my ($token) = @_;
1.439 albertel 947: if ( $#Apache::lonxml::depthcounter == -1) {
948: &Apache::lonxml::warning(&mt("Missing tags, unable to properly run file."));
1.43 albertel 949: }
1.439 albertel 950: $Apache::lonxml::last_depth_count = pop(@Apache::lonxml::depthcounter);
951:
1.340 albertel 952: my ($timer,$time);
953: if ($Apache::lonxml::debug eq "1") {
954: $timer=pop(@timers);
955: $time=&tv_interval($lasttime);
956: $lasttime=[&gettimeofday()];
957: }
1.439 albertel 958: my $spacing=' 'x($#Apache::lonxml::depthcounter);
959: $Apache::lonxml::curdepth = join('_',@Apache::lonxml::depthcounter);
960: # &Apache::lonxml::debug("e$spacing$Apache::lonxml::depth : $Apache::lonxml::olddepth : $Apache::lonxml::curdepth : $token->[1] : $time : ".&tv_interval($timer));
1.54 albertel 961: #print "<br />e $Apache::lonxml::depth : $Apache::lonxml::olddepth : $token->[1] : $curdepth\n";
1.1 sakharuk 962: }
1.19 albertel 963:
1.399 albertel 964: sub get_id {
965: my ($parstack,$safeeval)=@_;
966: my $id= &Apache::lonxml::get_param('id',$parstack,$safeeval);
1.449 albertel 967: if ($env{'request.state'} eq 'construct' && $id =~ /([._]|[^\w\d\s[:punct:]])/) {
1.498 bisitz 968: &error(&mt('ID [_1] contains invalid characters. IDs are only allowed to contain letters, numbers, spaces and -','"<tt>'.$id.'</tt>"'));
1.399 albertel 969: }
970: if ($id =~ /^\s*$/) { $id = $Apache::lonxml::curdepth; }
971: return $id;
972: }
973:
1.180 albertel 974: sub get_all_text_unbalanced {
1.190 albertel 975: #there is a copy of this in lonpublisher.pm
1.326 albertel 976: my($tag,$pars)= @_;
977: my $token;
978: my $result='';
979: $tag='<'.$tag.'>';
980: while ($token = $$pars[-1]->get_token) {
981: if (($token->[0] eq 'T')||($token->[0] eq 'C')||($token->[0] eq 'D')) {
1.386 albertel 982: if ($token->[0] eq 'T' && $token->[2]) {
1.382 albertel 983: $result.='<![CDATA['.$token->[1].']]>';
984: } else {
985: $result.=$token->[1];
986: }
1.326 albertel 987: } elsif ($token->[0] eq 'PI') {
988: $result.=$token->[2];
989: } elsif ($token->[0] eq 'S') {
990: $result.=$token->[4];
991: } elsif ($token->[0] eq 'E') {
992: $result.=$token->[2];
993: }
994: if ($result =~ /\Q$tag\E/is) {
995: ($result,my $redo)=$result =~ /(.*)\Q$tag\E(.*)/is;
996: #&Apache::lonxml::debug('Got a winner with leftovers ::'.$2);
997: #&Apache::lonxml::debug('Result is :'.$1);
998: $redo=$tag.$redo;
999: &Apache::lonxml::newparser($pars,\$redo);
1000: last;
1001: }
1002: }
1003: return $result
1.462 foxr 1004:
1.204 albertel 1005: }
1006:
1.462 foxr 1007: #########################################################################
1008: # #
1009: # bubble line counter management #
1010: # #
1011: #########################################################################
1012:
1.447 albertel 1013: =pod
1014:
1015: For bubble grading mode and exam bubble printing mode, the tracking of
1016: the current 'bubble line number' is stored in the %env element
1017: 'form.counter', and is modifed and handled by the following routines.
1018:
1019: The value of it is stored in $Apache:lonxml::counter when live and
1020: stored back to env after done.
1021:
1.522 raeburn 1022: =item &increment_counter($increment, $part_response);
1.447 albertel 1023:
1024: Increments the internal counter environment variable a specified amount
1025:
1026: Optional Arguments:
1027: $increment - amount to increment by (defaults to 1)
1.462 foxr 1028: Also 1 if the value is negative or zero.
1.467 foxr 1029: $part_response - A concatenation of the part and response id
1030: identifying exactly what is being 'answered'.
1031:
1.447 albertel 1032:
1033: =cut
1034:
1.204 albertel 1035: sub increment_counter {
1.467 foxr 1036: my ($increment, $part_response) = @_;
1.481 raeburn 1037: if ($env{'form.grade_noincrement'}) { return; }
1.462 foxr 1038: if (!defined($increment) || $increment le 0) {
1039: $increment = 1;
1040: }
1041: $Apache::lonxml::counter += $increment;
1042:
1.466 foxr 1043: # If the caller supplied the response_id parameter,
1.462 foxr 1044: # Maintain its counter.. creating if necessary.
1045:
1.470 albertel 1046: if (defined($part_response)) {
1.467 foxr 1047: if (!defined($Apache::lonxml::counters_per_part{$part_response})) {
1048: $Apache::lonxml::counters_per_part{$part_response} = 0;
1.462 foxr 1049: }
1.467 foxr 1050: $Apache::lonxml::counters_per_part{$part_response} += $increment;
1051: my $new_value = $Apache::lonxml::counters_per_part{$part_response};
1.247 albertel 1052: }
1.462 foxr 1053:
1.289 sakharuk 1054: $Apache::lonxml::counter_changed=1;
1.204 albertel 1055: }
1056:
1.447 albertel 1057: =pod
1058:
1.461 foxr 1059: =item &init_counter($increment);
1.447 albertel 1060:
1061: Initialize the internal counter environment variable
1062:
1063: =cut
1064:
1.204 albertel 1065: sub init_counter {
1.391 albertel 1066: if ($env{'request.state'} eq 'construct') {
1067: $Apache::lonxml::counter=1;
1068: $Apache::lonxml::counter_changed=1;
1069: } elsif (defined($env{'form.counter'})) {
1.372 albertel 1070: $Apache::lonxml::counter=$env{'form.counter'};
1.247 albertel 1071: $Apache::lonxml::counter_changed=0;
1.237 sakharuk 1072: } else {
1.204 albertel 1073: $Apache::lonxml::counter=1;
1.247 albertel 1074: $Apache::lonxml::counter_changed=1;
1.204 albertel 1075: }
1076: }
1077:
1078: sub store_counter {
1.474 raeburn 1079: &Apache::lonnet::appenv({'form.counter' => $Apache::lonxml::counter});
1.401 albertel 1080: $Apache::lonxml::counter_changed=0;
1.204 albertel 1081: return '';
1.180 albertel 1082: }
1083:
1.398 albertel 1084: {
1085: my $state;
1086: sub clear_problem_counter {
1087: undef($state);
1088: &Apache::lonnet::delenv('form.counter');
1089: &Apache::lonxml::init_counter();
1090: &Apache::lonxml::store_counter();
1091: }
1092:
1093: sub remember_problem_counter {
1.422 albertel 1094: &Apache::lonnet::transfer_profile_to_env(undef,undef,1);
1.398 albertel 1095: $state = $env{'form.counter'};
1096: }
1097:
1098: sub restore_problem_counter {
1099: if (defined($state)) {
1.474 raeburn 1100: &Apache::lonnet::appenv({'form.counter' => $state});
1.398 albertel 1101: }
1102: }
1.401 albertel 1103: sub get_problem_counter {
1104: if ($Apache::lonxml::counter_changed) { &store_counter() }
1.422 albertel 1105: &Apache::lonnet::transfer_profile_to_env(undef,undef,1);
1.401 albertel 1106: return $env{'form.counter'};
1107: }
1.398 albertel 1108: }
1109:
1.462 foxr 1110: =pod
1111:
1.468 albertel 1112: =item bubble_lines_for_part(part_response)
1.462 foxr 1113:
1114: Returns the number of lines required to get a response for
1.467 foxr 1115: $part_response (this is just $Apache::lonxml::counters_per_part{$part_response}
1.462 foxr 1116:
1117: =cut
1118:
1119: sub bubble_lines_for_part {
1.467 foxr 1120: my ($part_response) = @_;
1.462 foxr 1121:
1.467 foxr 1122: if (!defined($Apache::lonxml::counters_per_part{$part_response})) {
1.462 foxr 1123: return 0;
1124: } else {
1.467 foxr 1125: return $Apache::lonxml::counters_per_part{$part_response};
1.462 foxr 1126: }
1127: }
1128:
1129: =pod
1130:
1131: =item clear_bubble_lines_for_part
1132:
1133: Clears the hash of bubble lines per part. If a caller
1134: needs to analyze several resources this should be called between
1135: resources to reset the hash for each problem being analyzed.
1136:
1137: =cut
1138:
1139: sub clear_bubble_lines_for_part {
1140: undef(%Apache::lonxml::counters_per_part);
1141: }
1142:
1143: =pod
1144:
1.468 albertel 1145: =item set_bubble_lines(part_response, value)
1.462 foxr 1146:
1147: If there is a problem part, that for whatever reason
1148: requires bubble lines that are not
1149: the same as the counter increment, it can call this sub during
1150: analysis to set its hash value explicitly.
1151:
1152: =cut
1153:
1154: sub set_bubble_lines {
1.467 foxr 1155: my ($part_response, $value) = @_;
1.462 foxr 1156:
1.467 foxr 1157: $Apache::lonxml::counters_per_part{$part_response} = $value;
1.462 foxr 1158: }
1159:
1160: =pod
1161:
1162: =item get_bubble_line_hash
1163:
1164: Returns the current bubble line hash. This is assumed to
1165: be small so we return a copy
1166:
1167:
1168: =cut
1169:
1170: sub get_bubble_line_hash {
1171: return %Apache::lonxml::counters_per_part;
1172: }
1173:
1174:
1175: #--------------------------------------------------
1176:
1.19 albertel 1177: sub get_all_text {
1.270 albertel 1178: my($tag,$pars,$style)= @_;
1179: my $gotfullstack=1;
1180: if (ref($pars) ne 'ARRAY') {
1181: $gotfullstack=0;
1182: $pars=[$pars];
1183: }
1184: if (ref($style) ne 'HASH') {
1185: $style={};
1186: }
1187: my $depth=0;
1188: my $token;
1189: my $result='';
1190: if ( $tag =~ m:^/: ) {
1191: my $tag=substr($tag,1);
1192: #&Apache::lonxml::debug("have:$tag:");
1193: my $top_empty=0;
1194: while (($depth >=0) && ($#$pars > -1) && (!$top_empty)) {
1195: while (($depth >=0) && ($token = $$pars[-1]->get_token)) {
1196: #&Apache::lonxml::debug("e token:$token->[0]:$depth:$token->[1]:".$#$pars.":".$#Apache::lonxml::pwd);
1197: if (($token->[0] eq 'T')||($token->[0] eq 'C')||($token->[0] eq 'D')) {
1.382 albertel 1198: if ($token->[2]) {
1199: $result.='<![CDATA['.$token->[1].']]>';
1200: } else {
1201: $result.=$token->[1];
1202: }
1.270 albertel 1203: } elsif ($token->[0] eq 'PI') {
1204: $result.=$token->[2];
1205: } elsif ($token->[0] eq 'S') {
1.316 albertel 1206: if ($token->[1] =~ /^\Q$tag\E$/i) { $depth++; }
1207: if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_ON$/) { $Apache::lonxml::usestyle=1; }
1208: if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_OFF$/) { $Apache::lonxml::usestyle=0; }
1.270 albertel 1209: $result.=$token->[4];
1210: } elsif ($token->[0] eq 'E') {
1.316 albertel 1211: if ( $token->[1] =~ /^\Q$tag\E$/i) { $depth--; }
1.270 albertel 1212: #skip sending back the last end tag
1.283 albertel 1213: if ($depth == 0 && exists($$style{'/'.$token->[1]}) && $Apache::lonxml::usestyle) {
1.270 albertel 1214: my $string=
1215: '<LONCAPA_INTERNAL_TURN_STYLE_OFF end="yes" />'.
1216: $$style{'/'.$token->[1]}.
1217: $token->[2].
1218: '<LONCAPA_INTERNAL_TURN_STYLE_ON />';
1219: &Apache::lonxml::newparser($pars,\$string);
1220: #&Apache::lonxml::debug("reParsing $string");
1221: next;
1222: }
1223: if ($depth > -1) {
1224: $result.=$token->[2];
1225: } else {
1226: $$pars[-1]->unget_token($token);
1227: }
1228: }
1229: }
1230: if (($depth >=0) && ($#$pars == 0) ) { $top_empty=1; }
1231: if (($depth >=0) && ($#$pars > 0) ) {
1232: pop(@$pars);
1233: pop(@Apache::lonxml::pwd);
1234: }
1235: }
1236: if ($top_empty && $depth >= 0) {
1237: #never found the end tag ran out of text, throw error send back blank
1238: &error('Never found end tag for <'.$tag.
1239: '> current string <pre>'.
1.314 albertel 1240: &HTML::Entities::encode($result,'<>&"').
1.270 albertel 1241: '</pre>');
1242: if ($gotfullstack) {
1243: my $newstring='</'.$tag.'>'.$result;
1244: &Apache::lonxml::newparser($pars,\$newstring);
1245: }
1246: $result='';
1247: }
1248: } else {
1249: while ($#$pars > -1) {
1250: while ($token = $$pars[-1]->get_token) {
1251: #&Apache::lonxml::debug("s token:$token->[0]:$depth:$token->[1]");
1252: if (($token->[0] eq 'T')||($token->[0] eq 'C')||
1253: ($token->[0] eq 'D')) {
1.382 albertel 1254: if ($token->[2]) {
1255: $result.='<![CDATA['.$token->[1].']]>';
1256: } else {
1257: $result.=$token->[1];
1258: }
1.270 albertel 1259: } elsif ($token->[0] eq 'PI') {
1260: $result.=$token->[2];
1261: } elsif ($token->[0] eq 'S') {
1.316 albertel 1262: if ( $token->[1] =~ /^\Q$tag\E$/i) {
1.270 albertel 1263: $$pars[-1]->unget_token($token); last;
1264: } else {
1265: $result.=$token->[4];
1266: }
1.316 albertel 1267: if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_ON$/) { $Apache::lonxml::usestyle=1; }
1268: if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_OFF$/) { $Apache::lonxml::usestyle=0; }
1.270 albertel 1269: } elsif ($token->[0] eq 'E') {
1270: $result.=$token->[2];
1271: }
1272: }
1273: if (($#$pars > 0) ) {
1274: pop(@$pars);
1275: pop(@Apache::lonxml::pwd);
1276: } else { last; }
1277: }
1278: }
1279: #&Apache::lonxml::debug("Exit:$result:");
1280: return $result
1.19 albertel 1281: }
1282:
1.23 albertel 1283: sub newparser {
1284: my ($parser,$contentref,$dir) = @_;
1.167 albertel 1285: push (@$parser,HTML::LCParser->new($contentref));
1.365 albertel 1286: $$parser[-1]->xml_mode(1);
1287: $$parser[-1]->marked_sections(1);
1.23 albertel 1288: if ( $dir eq '' ) {
1289: push (@Apache::lonxml::pwd, $Apache::lonxml::pwd[$#Apache::lonxml::pwd]);
1290: } else {
1291: push (@Apache::lonxml::pwd, $dir);
1292: }
1293: }
1.1 sakharuk 1294:
1.8 albertel 1295: sub parstring {
1.417 albertel 1296: my ($token) = @_;
1297: my (@vars,@values);
1298: foreach my $attr (@{$token->[3]}) {
1299: if ($attr!~/\W/) {
1300: my $val=$token->[2]->{$attr};
1301: $val =~ s/([\%\@\\\"\'])/\\$1/g;
1302: $val =~ s/(\$[^\{a-zA-Z_])/\\$1/g;
1303: $val =~ s/(\$)$/\\$1/;
1304: #if ($val =~ m/^[\%\@]/) { $val="\\".$val; }
1305: push(@vars,"\$$attr");
1306: push(@values,"\"$val\"");
1307: }
1308: }
1309: my $var_init =
1310: (@vars) ? 'my ('.join(',',@vars).') = ('.join(',',@values).');'
1311: : '';
1312: return $var_init;
1.8 albertel 1313: }
1.22 albertel 1314:
1.384 albertel 1315: sub extlink {
1316: my ($res,$exact)=@_;
1317: if (!$exact) {
1318: $res=&Apache::lonnet::hreflocation($Apache::lonxml::pwd[-1],$res);
1319: }
1320: push(@Apache::lonxml::extlinks,$res)
1321: }
1322:
1.34 www 1323: sub writeallows {
1.126 www 1324: unless ($#extlinks>=0) { return; }
1.377 albertel 1325: my $thisurl = &Apache::lonnet::clutter(shift);
1.372 albertel 1326: if ($env{'httpref.'.$thisurl}) {
1327: $thisurl=$env{'httpref.'.$thisurl};
1.111 www 1328: }
1.34 www 1329: my $thisdir=$thisurl;
1330: $thisdir=~s/\/[^\/]+$//;
1331: my %httpref=();
1.142 albertel 1332: foreach (@extlinks) {
1.34 www 1333: $httpref{'httpref.'.
1.444 albertel 1334: &Apache::lonnet::hreflocation($thisdir,&unescape($_))}=$thisurl;
1.142 albertel 1335: }
1.126 www 1336: @extlinks=();
1.474 raeburn 1337: &Apache::lonnet::appenv(\%httpref);
1.34 www 1338: }
1339:
1.281 albertel 1340: sub register_ssi {
1341: my ($url,%form)=@_;
1342: push (@Apache::lonxml::ssi_info,{'url'=>$url,'form'=>\%form});
1343: return '';
1344: }
1345:
1346: sub do_registered_ssi {
1347: foreach my $info (@Apache::lonxml::ssi_info) {
1348: my %form=%{ $info->{'form'}};
1349: my $url=$info->{'url'};
1350: &Apache::lonnet::ssi($url,%form);
1351: }
1352: }
1.448 albertel 1353:
1354: sub add_script_result {
1355: my ($display) = @_;
1356: push(@script_var_displays, $display);
1357: }
1358:
1.66 www 1359: #
1360: # Afterburner handles anchors, highlights and links
1361: #
1362: sub afterburn {
1363: my $result=shift;
1.154 albertel 1364: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
1365: ['highlight','anchor','link']);
1.372 albertel 1366: if ($env{'form.highlight'}) {
1367: foreach (split(/\,/,$env{'form.highlight'})) {
1.66 www 1368: my $anchorname=$_;
1369: my $matchthis=$anchorname;
1370: $matchthis=~s/\_+/\\s\+/g;
1.317 albertel 1371: $result=~s/(\Q$matchthis\E)/\<font color=\"red\"\>$1\<\/font\>/gs;
1.142 albertel 1372: }
1.66 www 1373: }
1.372 albertel 1374: if ($env{'form.link'}) {
1375: foreach (split(/\,/,$env{'form.link'})) {
1.66 www 1376: my ($anchorname,$linkurl)=split(/\>/,$_);
1377: my $matchthis=$anchorname;
1378: $matchthis=~s/\_+/\\s\+/g;
1.317 albertel 1379: $result=~s/(\Q$matchthis\E)/\<a href=\"$linkurl\"\>$1\<\/a\>/gs;
1.142 albertel 1380: }
1.66 www 1381: }
1.372 albertel 1382: if ($env{'form.anchor'}) {
1383: my $anchorname=$env{'form.anchor'};
1.66 www 1384: my $matchthis=$anchorname;
1385: $matchthis=~s/\_+/\\s\+/g;
1.317 albertel 1386: $result=~s/(\Q$matchthis\E)/\<a name=\"$anchorname\"\>$1\<\/a\>/s;
1.66 www 1387: $result.=(<<"ENDSCRIPT");
1.226 albertel 1388: <script type="text/javascript">
1.66 www 1389: document.location.hash='$anchorname';
1390: </script>
1391: ENDSCRIPT
1392: }
1393: return $result;
1394: }
1395:
1.79 www 1396: sub storefile {
1397: my ($file,$contents)=@_;
1.290 albertel 1398: &Apache::lonnet::correct_line_ends(\$contents);
1.79 www 1399: if (my $fh=Apache::File->new('>'.$file)) {
1400: print $fh $contents;
1401: $fh->close();
1.271 www 1402: return 1;
1.147 albertel 1403: } else {
1.482 bisitz 1404: &warning(&mt('Unable to save file [_1]','<tt>'.$file.'</tt>'));
1.271 www 1405: return 0;
1.79 www 1406: }
1407: }
1408:
1.151 albertel 1409: sub createnewhtml {
1.321 www 1410: my $title=&mt('Title of document goes here');
1411: my $body=&mt('Body of document goes here');
1412: my $filecontents=(<<SIMPLECONTENT);
1.78 www 1413: <html>
1414: <head>
1.321 www 1415: <title>$title</title>
1.78 www 1416: </head>
1417: <body bgcolor="#FFFFFF">
1.321 www 1418: $body
1.78 www 1419: </body>
1420: </html>
1421: SIMPLECONTENT
1.321 www 1422: return $filecontents;
1.151 albertel 1423: }
1424:
1.274 albertel 1425: sub createnewsty {
1426: my $filecontents=(<<SIMPLECONTENT);
1427: <definetag name="">
1428: <render>
1429: <web></web>
1430: <tex></tex>
1431: </render>
1432: </definetag>
1433: SIMPLECONTENT
1434: return $filecontents;
1435: }
1436:
1.493 raeburn 1437: sub createnewjs {
1438: my $filecontents=(<<SIMPLECONTENT);
1439: <script type="text/javascript" language="Javascript">
1440:
1441: </script>
1442: SIMPLECONTENT
1443: return $filecontents;
1444: }
1445:
1.472 www 1446: sub verify_html {
1447: my ($filecontents)=@_;
1.516 raeburn 1448: my ($is_html,$is_xml);
1449: if ($filecontents =~/(?:\<|\<\;)\?xml[^\<]*\?(?:\>|\>\;)/is) {
1450: $is_xml = 1;
1.518 raeburn 1451: } elsif ($filecontents =~/(?:\<|\<\;)html(?:\s+[^\<]+|\s*)(?:\>|\>\;)/is) {
1.516 raeburn 1452: $is_html = 1;
1453: }
1454: unless ($is_xml || $is_html) {
1455: return &mt('File does not have [_1] or [_2] starting tag','<html>','<?xml ?>');
1456: }
1457: if ($is_html) {
1458: if ($filecontents!~/(?:\<|\<\;)\/html(?:\>|\>\;)/is) {
1459: return &mt('File does not have [_1] ending tag','<html>');
1460: }
1461: if ($filecontents!~/(?:\<|\<\;)(?:body|frameset)[^\<]*(?:\>|\>\;)/is) {
1462: return &mt('File does not have [_1] or [_2] starting tag','<body>','<frameset>');
1463: }
1464: if ($filecontents!~/(?:\<|\<\;)\/(?:body|frameset)[^\<]*(?:\>|\>\;)/is) {
1465: return &mt('File does not have [_1] or [_2] ending tag','<body>','<frameset>');
1466: }
1.472 www 1467: }
1468: return '';
1469: }
1.147 albertel 1470:
1.478 www 1471: sub renderingoptions {
1472: my %langchoices=('' => '');
1473: foreach (&Apache::loncommon::languageids()) {
1474: if (&Apache::loncommon::supportedlanguagecode($_)) {
1475: $langchoices{&Apache::loncommon::supportedlanguagecode($_)}
1476: = &Apache::loncommon::plainlanguagedescription($_);
1477: }
1478: }
1.500 raeburn 1479: my $output;
1480: unless ($env{'form.forceedit'}) {
1.504 bisitz 1481: $output .=
1482: '<span class="LC_nobreak">'.
1.500 raeburn 1483: &mt('Language:').' '.
1.504 bisitz 1484: &Apache::loncommon::select_form(
1485: $env{'form.languages'},
1486: 'languages',
1.510 raeburn 1487: {&Apache::lonlocal::texthash(%langchoices)}).
1.504 bisitz 1488: '</span>';
1.500 raeburn 1489: }
1.504 bisitz 1490: $output .=
1491: ' <span class="LC_nobreak">'.
1.479 bisitz 1492: &mt('Math Rendering:').' '.
1.504 bisitz 1493: &Apache::loncommon::select_form(
1494: $env{'form.texengine'},
1495: 'texengine',
1.510 raeburn 1496: {&Apache::lonlocal::texthash
1.504 bisitz 1497: ('' => '',
1498: 'tth' => 'tth (TeX to HTML)',
1499: 'jsMath' => 'jsMath',
1.510 raeburn 1500: 'mimetex' => 'mimetex (Convert to Images)')}).
1.504 bisitz 1501: '</span>';
1.500 raeburn 1502: return $output;
1.478 www 1503: }
1504:
1.151 albertel 1505: sub inserteditinfo {
1.470 albertel 1506: my ($filecontents, $filetype, $filename)=@_;
1.314 albertel 1507: $filecontents = &HTML::Entities::encode($filecontents,'<>&"');
1.274 albertel 1508: my $xml_help = '';
1.321 www 1509: my $initialize='';
1.452 albertel 1510: my $textarea_id = 'filecont';
1.492 raeburn 1511: my $dragmath_button;
1.452 albertel 1512: my ($add_to_onload, $add_to_onresize);
1.456 albertel 1513: $initialize=&Apache::lonhtmlcommon::spellheader();
1.514 raeburn 1514: if (($filetype eq 'html') && (&Apache::lonhtmlcommon::htmlareabrowser())) {
1.463 albertel 1515: my $lang = &Apache::lonhtmlcommon::htmlarea_lang();
1.512 raeburn 1516: my %textarea_args = (
1517: fullpage => 'true',
1518: dragmath => 'math',
1519: );
1.514 raeburn 1520: $initialize .= &Apache::lonhtmlcommon::htmlareaselectactive(\%textarea_args);
1521: }
1522: $initialize .= (<<FULLPAGE);
1.321 www 1523: <script type="text/javascript">
1.514 raeburn 1524: // <![CDATA[
1.321 www 1525: function initDocument() {
1.463 albertel 1526: resize_textarea('$textarea_id','LC_aftertextarea');
1.321 www 1527: }
1.514 raeburn 1528: // ]]>
1.321 www 1529: </script>
1530: FULLPAGE
1.514 raeburn 1531: if ($filetype eq 'html') {
1532: $dragmath_button = '<span id="math_filecont">'.&Apache::lonhtmlcommon::dragmath_button('filecont',1).'</span>';
1533: $initialize .= "\n".&Apache::lonhtmlcommon::dragmath_js('EditMathPopup');
1.512 raeburn 1534: }
1.456 albertel 1535: $add_to_onload = 'initDocument();';
1536: $add_to_onresize = "resize_textarea('$textarea_id','LC_aftertextarea');";
1537:
1538: if ($filetype eq 'html') {
1.321 www 1539: $xml_help=&Apache::loncommon::helpLatexCheatsheet();
1.274 albertel 1540: }
1.452 albertel 1541:
1.254 albertel 1542: my $titledisplay=&display_title();
1.512 raeburn 1543: my $textareaclass;
1.426 banghart 1544: my %lt=&Apache::lonlocal::texthash('st' => 'Save and Edit',
1545: 'vi' => 'Save and View',
1.427 banghart 1546: 'dv' => 'Discard Edits and View',
1.428 banghart 1547: 'un' => 'undo',
1.280 www 1548: 'ed' => 'Edit');
1.512 raeburn 1549: my $spelllink = &Apache::lonhtmlcommon::spelllink('xmledit','filecont');
1.451 albertel 1550: my $textarea_events = &Apache::edit::element_change_detection();
1551: my $form_events = &Apache::edit::form_change_detection();
1.491 raeburn 1552: my $htmlerror;
1553: if ($filetype eq 'html') {
1554: $htmlerror=&verify_html($filecontents);
1555: if ($htmlerror) {
1556: $htmlerror='<span class="LC_error">'.$htmlerror.'</span>';
1557: }
1.501 raeburn 1558: if (&Apache::lonhtmlcommon::htmlareabrowser()) {
1.515 raeburn 1559: $textareaclass = 'class="LC_richDefaultOff"';
1.501 raeburn 1560: }
1.472 www 1561: }
1.78 www 1562: my $editfooter=(<<ENDFOOTER);
1.321 www 1563: $initialize
1.78 www 1564: <a name="editsection" />
1.451 albertel 1565: <form $form_events method="post" name="xmledit">
1.470 albertel 1566: <div class="LC_edit_problem_editxml_header">
1567: <table class="LC_edit_problem_header_title"><tr><td>
1568: $filename
1569: </td><td align="right">
1570: $xml_help
1571: </td></tr>
1572: </table>
1573: <div class="LC_edit_problem_discards">
1574: <input type="submit" name="discardview" accesskey="d" value="$lt{'dv'}" />
1575: <input type="submit" name="Undo" accesskey="u" value="$lt{'un'}" />
1.513 raeburn 1576: $htmlerror $dragmath_button
1.470 albertel 1577: </div>
1578: <div class="LC_edit_problem_saves">
1579: <input type="submit" name="savethisfile" accesskey="s" value="$lt{'st'}" />
1580: <input type="submit" name="viewmode" accesskey="v" value="$lt{'vi'}" />
1581: </div>
1582: </div>
1.513 raeburn 1583: <textarea $textarea_events style="width:100%" cols="80" rows="44" name="filecont" id="filecont" $textareaclass>$filecontents</textarea><br />$spelllink
1.470 albertel 1584: <div id="LC_aftertextarea">
1585: <br />
1586: $titledisplay
1587: </div>
1.78 www 1588: </form>
1.321 www 1589: </body>
1.78 www 1590: ENDFOOTER
1.452 albertel 1591: return ($editfooter,$add_to_onload,$add_to_onresize);;
1.78 www 1592: }
1593:
1.152 albertel 1594: sub get_target {
1.372 albertel 1595: my $viewgrades=&Apache::lonnet::allowed('vgr',$env{'request.course.id'});
1596: if ( $env{'request.state'} eq 'published') {
1597: if ( defined($env{'form.grade_target'})
1.152 albertel 1598: && ($viewgrades == 'F' )) {
1.372 albertel 1599: return ($env{'form.grade_target'});
1600: } elsif (defined($env{'form.grade_target'})) {
1601: if (($env{'form.grade_target'} eq 'web') ||
1602: ($env{'form.grade_target'} eq 'tex') ) {
1603: return $env{'form.grade_target'}
1.153 albertel 1604: } else {
1605: return 'web';
1606: }
1.152 albertel 1607: } else {
1608: return 'web';
1609: }
1.372 albertel 1610: } elsif ($env{'request.state'} eq 'construct') {
1611: if ( defined($env{'form.grade_target'})) {
1612: return ($env{'form.grade_target'});
1.152 albertel 1613: } else {
1614: return 'web';
1615: }
1616: } else {
1617: return 'web';
1618: }
1619: }
1620:
1.24 sakharuk 1621: sub handler {
1.255 sakharuk 1622: my $request=shift;
1.493 raeburn 1623:
1.255 sakharuk 1624: my $target=&get_target();
1.372 albertel 1625: $Apache::lonxml::debug=$env{'user.debug'};
1.255 sakharuk 1626:
1.364 albertel 1627: &Apache::loncommon::content_type($request,'text/html');
1.255 sakharuk 1628: &Apache::loncommon::no_cache($request);
1.372 albertel 1629: if ($env{'request.state'} eq 'published') {
1.363 albertel 1630: $request->set_last_modified(&Apache::lonnet::metadata($request->uri,
1631: 'lastrevisiondate'));
1632: }
1.499 raeburn 1633: # Embedded Flash movies from Camtasia served from https will not display in IE
1634: # if XML config file has expired from cache.
1635: if ($ENV{'SERVER_PORT'} == 443) {
1636: if ($request->uri =~ /\.xml$/) {
1637: my ($httpbrowser,$clientbrowser) =
1638: &Apache::loncommon::decode_user_agent($request);
1639: if ($clientbrowser =~ /^explorer$/i) {
1640: delete $request->headers_out->{'Cache-control'};
1641: delete $request->headers_out->{'Pragma'};
1642: my $expiration = time + 60;
1643: my $date=strftime("%a, %d %b %Y %H:%M:%S GMT",gmtime($expiration));
1644: $request->headers_out->set("Expires" => $date);
1645: }
1646: }
1647: }
1.255 sakharuk 1648: $request->send_http_header;
1649:
1650: return OK if $request->header_only;
1.68 www 1651:
1652:
1.255 sakharuk 1653: my $file=&Apache::lonnet::filelocation("",$request->uri);
1.502 raeburn 1654: my ($filetype,$breadcrumbtext);
1655: if ($file =~ /\.(sty|css|js|txt|tex)$/) {
1.493 raeburn 1656: $filetype=$1;
1.274 albertel 1657: } else {
1658: $filetype='html';
1659: }
1.502 raeburn 1660: if ($filetype eq 'sty') {
1661: $breadcrumbtext = 'Style File Editor';
1662: } elsif ($filetype eq 'js') {
1663: $breadcrumbtext = 'Javascript Editor';
1664: } elsif ($filetype eq 'css') {
1665: $breadcrumbtext = 'CSS Editor';
1666: } elsif ($filetype eq 'txt') {
1667: $breadcrumbtext = 'Text Editor';
1668: } elsif ($filetype eq 'tex') {
1669: $breadcrumbtext = 'TeX Editor';
1670: } else {
1671: $breadcrumbtext = 'HTML Editor';
1672: }
1.493 raeburn 1673:
1.78 www 1674: #
1675: # Edit action? Save file.
1676: #
1.428 banghart 1677: if (!($env{'request.state'} eq 'published')) {
1678: if ($env{'form.savethisfile'} || $env{'form.viewmode'} || $env{'form.Undo'}) {
1.429 albertel 1679: my $html_file=&Apache::lonnet::getfile($file);
1680: my $error = &Apache::lonhomework::handle_save_or_undo($request, \$html_file, \$env{'form.filecont'});
1.472 www 1681: if ($env{'form.savethisfile'}) {
1682: $env{'form.editmode'}='Edit'; #force edit mode
1683: }
1.255 sakharuk 1684: }
1685: }
1686: my %mystyle;
1687: my $result = '';
1688: my $filecontents=&Apache::lonnet::getfile($file);
1689: if ($filecontents eq -1) {
1.402 albertel 1690: my $start_page=&Apache::loncommon::start_page('File Error');
1.412 albertel 1691: my $end_page=&Apache::loncommon::end_page();
1.495 bisitz 1692: my $errormsg='<p class="LC_error">'
1693: .&mt('File not found: [_1]'
1694: ,'<span class="LC_filename">'.$file.'</span>')
1695: .'</p>';
1.255 sakharuk 1696: $result=(<<ENDNOTFOUND);
1.402 albertel 1697: $start_page
1.495 bisitz 1698: $errormsg
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();
1.493 raeburn 1705: } elsif ($filetype eq 'js') {
1706: $filecontents=&createnewjs();
1.502 raeburn 1707: } elsif ($filetype ne 'css' && $filetype ne 'txt' && $filetype ne 'tex') {
1.274 albertel 1708: $filecontents=&createnewhtml();
1709: }
1.372 albertel 1710: $env{'form.editmode'}='Edit'; #force edit mode
1.255 sakharuk 1711: }
1712: } else {
1.372 albertel 1713: unless ($env{'request.state'} eq 'published') {
1.343 albertel 1714: if ($filecontents=~/BEGIN LON-CAPA Internal/) {
1.381 www 1715: &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 1716: }
1.264 www 1717: #
1718: # we are in construction space, see if edit mode forced
1.385 albertel 1719: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
1720: ['editmode']);
1.255 sakharuk 1721: }
1.427 banghart 1722: if (!$env{'form.editmode'} || $env{'form.viewmode'} || $env{'form.discardview'}) {
1.493 raeburn 1723: if ($filetype eq 'html' || $filetype eq 'sty') {
1724: &Apache::structuretags::reset_problem_globals();
1725: $result = &Apache::lonxml::xmlparse($request,$target,
1726: $filecontents,'',%mystyle);
1.455 albertel 1727: # .html files may contain <problem> or <Task> need to clean
1728: # up if it did
1.493 raeburn 1729: &Apache::structuretags::reset_problem_globals();
1730: &Apache::lonhomework::finished_parsing();
1.502 raeburn 1731: } elsif ($filetype eq 'tex') {
1.503 raeburn 1732: $result = &Apache::lontexconvert::converted(\$filecontents,
1733: $env{'form.texengine'});
1734: if ($env{'form.return_only_error_and_warning_counts'}) {
1735: $result = "$errorcount:$warningcount";
1736: }
1.493 raeburn 1737: } else {
1738: $result = $filecontents;
1739: }
1.385 albertel 1740: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
1741: ['rawmode']);
1.395 albertel 1742: if ($env{'form.rawmode'}) { $result = $filecontents; }
1.503 raeburn 1743: if (($filetype ne 'html') &&
1744: (!$env{'form.return_only_error_and_warning_counts'})) {
1.502 raeburn 1745: my $nochgview = 1;
1.495 bisitz 1746: my $controls = '';
1747: if ($env{'request.state'} eq 'construct') {
1748: $controls = &Apache::loncommon::head_subbox(
1749: &Apache::loncommon::CSTR_pageheader()
1750: .&Apache::londefdef::edit_controls($nochgview));
1751: }
1.502 raeburn 1752: if ($filetype ne 'sty' && $filetype ne 'tex') {
1.493 raeburn 1753: $result =~ s/</</g;
1754: $result =~ s/>/>/g;
1755: $result = '<table class="LC_sty_begin">'.
1756: '<tr><td><b><pre>'.$result.
1757: '</pre></b></td></tr></table>';
1758: }
1.506 droeschl 1759: my $brcrum;
1760: if ($env{'request.state'} eq 'construct') {
1.523 raeburn 1761: $brcrum = [{'href' => &Apache::loncommon::authorspace($request->uri),
1.506 droeschl 1762: 'text' => 'Construction Space'},
1763: {'href' => '',
1764: 'text' => $breadcrumbtext}];
1.493 raeburn 1765: } else {
1.506 droeschl 1766: $brcrum = ''; # FIXME: Where are we?
1.493 raeburn 1767: }
1.506 droeschl 1768: my %options = ('bread_crumbs' => $brcrum,
1769: 'bgcolor' => '#FFFFFF');
1770: $result =
1771: &Apache::loncommon::start_page(undef,undef,\%options)
1772: .$controls
1773: .$result
1774: .&Apache::loncommon::end_page();
1.493 raeburn 1775: }
1.495 bisitz 1776: }
1.147 albertel 1777: }
1.456 albertel 1778:
1.78 www 1779: #
1780: # Edit action? Insert editing commands
1781: #
1.372 albertel 1782: unless ($env{'request.state'} eq 'published') {
1.427 banghart 1783: if ($env{'form.editmode'} && (!($env{'form.viewmode'})) && (!($env{'form.discardview'})))
1.450 albertel 1784: {
1.470 albertel 1785: my $displayfile=$request->uri;
1786: $displayfile=~s/^\/[^\/]*//;
1787:
1.452 albertel 1788: my ($edit_info, $add_to_onload, $add_to_onresize)=
1.470 albertel 1789: &inserteditinfo($filecontents,$filetype,$displayfile);
1.450 albertel 1790:
1791: my %options =
1792: ('add_entries' =>
1.495 bisitz 1793: {'onresize' => $add_to_onresize,
1794: 'onload' => $add_to_onload, });
1.500 raeburn 1795: my $header;
1796: if ($env{'request.state'} eq 'construct') {
1797: $options{'bread_crumbs'} = [{
1.523 raeburn 1798: 'href' => &Apache::loncommon::authorspace($request->uri),
1.500 raeburn 1799: 'text' => 'Construction Space'},
1800: {'href' => '',
1.502 raeburn 1801: 'text' => $breadcrumbtext}];
1.500 raeburn 1802: $header = &Apache::loncommon::head_subbox(
1803: &Apache::loncommon::CSTR_pageheader());
1804: }
1.452 albertel 1805: my $js =
1806: &Apache::edit::js_change_detection().
1807: &Apache::loncommon::resize_textarea_js();
1.451 albertel 1808: my $start_page = &Apache::loncommon::start_page(undef,$js,
1.402 albertel 1809: \%options);
1.495 bisitz 1810: $result = $start_page
1.500 raeburn 1811: .$header
1.495 bisitz 1812: .&Apache::lonxml::message_location()
1813: .$edit_info
1814: .&Apache::loncommon::end_page();
1.493 raeburn 1815: }
1.147 albertel 1816: }
1.402 albertel 1817: if ($filetype eq 'html') { &writeallows($request->uri); }
1.501 raeburn 1818:
1.309 albertel 1819: &Apache::lonxml::add_messages(\$result);
1.255 sakharuk 1820: $request->print($result);
1821:
1822: return OK;
1.253 albertel 1823: }
1824:
1825: sub display_title {
1826: my $result;
1.372 albertel 1827: if ($env{'request.state'} eq 'construct') {
1.253 albertel 1828: my $title=&Apache::lonnet::gettitle();
1829: if (!defined($title) || $title eq '') {
1.372 albertel 1830: $title = $env{'request.filename'};
1.253 albertel 1831: $title = substr($title, rindex($title, '/') + 1);
1832: }
1.476 bisitz 1833: $result = "<script type='text/javascript'>top.document.title = '$title - LON-CAPA "
1834: .&mt('Construction Space')."';</script>";
1.253 albertel 1835: }
1836: return $result;
1.24 sakharuk 1837: }
1.147 albertel 1838:
1.22 albertel 1839: sub debug {
1.298 albertel 1840: if ($Apache::lonxml::debug eq "1") {
1841: $|=1;
1.300 albertel 1842: my $request=$Apache::lonxml::request;
1.388 albertel 1843: if (!$request) {
1844: eval { $request=Apache->request; };
1845: }
1846: if (!$request) {
1847: eval { $request=Apache2::RequestUtil->request; };
1848: }
1.314 albertel 1849: $request->print('<font size="-2"><pre>DEBUG:'.&HTML::Entities::encode($_[0],'<>&"')."</pre></font>\n");
1.346 albertel 1850: #&Apache::lonnet::logthis($_[0]);
1.298 albertel 1851: }
1.22 albertel 1852: }
1.49 albertel 1853:
1.348 albertel 1854: sub show_error_warn_msg {
1.522 raeburn 1855: if (($env{'request.filename'} eq
1856: $Apache::lonnet::perlvar{'lonDocRoot'}.'/res/lib/templates/simpleproblem.problem') &&
1857: (&Apache::lonnet::allowed('mdc',$env{'request.course.id'}))) {
1.351 albertel 1858: return 1;
1859: }
1.348 albertel 1860: return (($Apache::lonxml::debug eq 1) ||
1.372 albertel 1861: ($env{'request.state'} eq 'construct') ||
1.348 albertel 1862: ($Apache::lonhomework::browse eq 'F'
1863: &&
1.372 albertel 1864: $env{'form.show_errors'} eq 'on'));
1.348 albertel 1865: }
1866:
1.22 albertel 1867: sub error {
1.454 albertel 1868: my @errors = @_;
1869:
1.336 albertel 1870: $errorcount++;
1.454 albertel 1871:
1.490 www 1872: $Apache::lonxml::internal_error=1;
1873:
1.454 albertel 1874: if (defined($Apache::inputtags::part)) {
1875: if ( @Apache::inputtags::response ) {
1876: push(@errors,
1877: &mt("This error occurred while processing response [_1] in part [_2]",
1878: $Apache::inputtags::response[-1],
1879: $Apache::inputtags::part));
1880: } else {
1881: push(@errors,
1882: &mt("This error occurred while processing part [_1]",
1883: $Apache::inputtags::part));
1884: }
1885: }
1886:
1.348 albertel 1887: if ( &show_error_warn_msg() ) {
1.336 albertel 1888: # If printing in construction space, put the error inside <pre></pre>
1889: push(@Apache::lonxml::error_messages,
1.484 bisitz 1890: $Apache::lonxml::warnings_error_header
1891: .'<div class="LC_error">'
1892: .'<b>'.&mt('ERROR:').' </b>'.join("<br />\n",@errors)
1893: ."</div>\n");
1.336 albertel 1894: $Apache::lonxml::warnings_error_header='';
1895: } else {
1896: my $errormsg;
1897: my ($symb)=&Apache::lonnet::symbread();
1898: if ( !$symb ) {
1899: #public or browsers
1.486 bisitz 1900: $errormsg=&mt("An error occurred while processing this resource. The author has been notified.");
1.403 albertel 1901: }
1.413 albertel 1902: my $host=$Apache::lonnet::perlvar{'lonHostID'};
1.476 bisitz 1903: push(@errors,
1904: &mt("The error occurred on host [_1]",
1905: "<tt>$host</tt>"));
1.454 albertel 1906:
1907: my $msg = join('<br />', @errors);
1908:
1.336 albertel 1909: #notify author
1.403 albertel 1910: &Apache::lonmsg::author_res_msg($env{'request.filename'},$msg);
1.336 albertel 1911: #notify course
1.372 albertel 1912: if ( $symb && $env{'request.course.id'} ) {
1.380 www 1913: my $cnum=$env{'course.'.$env{'request.course.id'}.'.num'};
1914: my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
1.440 albertel 1915: my (undef,%users)=&Apache::lonmsg::decide_receiver(undef,0,1,1,1);
1.372 albertel 1916: my $declutter=&Apache::lonnet::declutter($env{'request.filename'});
1.435 raeburn 1917: my $baseurl = &Apache::lonnet::clutter($declutter);
1.336 albertel 1918: my @userlist;
1919: foreach (keys %users) {
1920: my ($user,$domain) = split(/:/, $_);
1921: push(@userlist,"$user\@$domain");
1.380 www 1922: my $key=$declutter.'_'.$user.'_'.$domain;
1923: my %lastnotified=&Apache::lonnet::get('nohist_xmlerrornotifications',
1924: [$key],
1925: $cdom,$cnum);
1926: my $now=time;
1927: if ($now-$lastnotified{$key}>86400) {
1.434 raeburn 1928: my $title = &Apache::lonnet::gettitle($symb);
1929: my $sentmessage;
1.380 www 1930: &Apache::lonmsg::user_normal_msg($user,$domain,
1.435 raeburn 1931: "Error [$title]",$msg,'',$baseurl,'','',
1.434 raeburn 1932: \$sentmessage,$symb,$title,1);
1.380 www 1933: &Apache::lonnet::put('nohist_xmlerrornotifications',
1934: {$key => $now},
1935: $cdom,$cnum);
1936: }
1.336 albertel 1937: }
1.372 albertel 1938: if ($env{'request.role.adv'}) {
1.486 bisitz 1939: $errormsg=&mt("An error occurred while processing this resource. The course personnel ([_1]) and the author have been notified.",join(', ',@userlist));
1.336 albertel 1940: } else {
1.486 bisitz 1941: $errormsg=&mt("An error occurred while processing this resource. The instructor has been notified.");
1.336 albertel 1942: }
1943: }
1944: push(@Apache::lonxml::error_messages,"<b>$errormsg</b> <br />");
1.52 albertel 1945: }
1.22 albertel 1946: }
1.49 albertel 1947:
1.22 albertel 1948: sub warning {
1.295 albertel 1949: $warningcount++;
1.261 albertel 1950:
1.372 albertel 1951: if ($env{'form.grade_target'} ne 'tex') {
1.348 albertel 1952: if ( &show_error_warn_msg() ) {
1.309 albertel 1953: push(@Apache::lonxml::warning_messages,
1.484 bisitz 1954: $Apache::lonxml::warnings_error_header
1955: .'<div class="LC_warning">'
1956: .&mt('[_1]W[_2]ARNING','<b>','</b>')."<b>:</b> ".join('<br />',@_)
1957: ."</div>\n"
1.482 bisitz 1958: );
1.295 albertel 1959: $Apache::lonxml::warnings_error_header='';
1960: }
1961: }
1.309 albertel 1962: }
1963:
1964: sub info {
1.372 albertel 1965: if ($env{'form.grade_target'} ne 'tex'
1966: && $env{'request.state'} eq 'construct') {
1.309 albertel 1967: push(@Apache::lonxml::info_messages,join('<br />',@_)."<br />\n");
1968: }
1969: }
1970:
1971: sub message_location {
1972: return '__LONCAPA_INTERNAL_MESSAGE_LOCATION__';
1973: }
1974:
1975: sub add_messages {
1976: my ($msg)=@_;
1977: my $result=join(' ',
1978: @Apache::lonxml::info_messages,
1979: @Apache::lonxml::error_messages,
1980: @Apache::lonxml::warning_messages);
1981: undef(@Apache::lonxml::info_messages);
1982: undef(@Apache::lonxml::error_messages);
1983: undef(@Apache::lonxml::warning_messages);
1984: $$msg=~s/__LONCAPA_INTERNAL_MESSAGE_LOCATION__/$result/;
1985: $$msg=~s/__LONCAPA_INTERNAL_MESSAGE_LOCATION__//g;
1.83 albertel 1986: }
1987:
1988: sub get_param {
1.213 albertel 1989: my ($param,$parstack,$safeeval,$context,$case_insensitive) = @_;
1990: if ( ! $context ) { $context = -1; }
1991: my $args ='';
1992: if ( $#$parstack > (-2-$context) ) { $args=$$parstack[$context]; }
1.297 sakharuk 1993: if ( ! $Apache::lonxml::usestyle ) {
1994: $args=$Apache::lonxml::style_values.$args;
1995: }
1.213 albertel 1996: if ( ! $args ) { return undef; }
1997: if ( $case_insensitive ) {
1.417 albertel 1998: if ($args =~ s/(my (?:.*))(\$\Q$param\E[,\)])/$1.lc($2)/ei) {
1.213 albertel 1999: return &Apache::run::run("{$args;".'return $'.$param.'}',
2000: $safeeval); #'
2001: } else {
2002: return undef;
2003: }
2004: } else {
1.417 albertel 2005: if ( $args =~ /my .*\$\Q$param\E[,\)]/ ) {
1.213 albertel 2006: return &Apache::run::run("{$args;".'return $'.$param.'}',
2007: $safeeval); #'
2008: } else {
2009: return undef;
2010: }
2011: }
1.22 albertel 2012: }
2013:
1.132 albertel 2014: sub get_param_var {
1.213 albertel 2015: my ($param,$parstack,$safeeval,$context,$case_insensitive) = @_;
1.132 albertel 2016: if ( ! $context ) { $context = -1; }
2017: my $args ='';
2018: if ( $#$parstack > (-2-$context) ) { $args=$$parstack[$context]; }
1.297 sakharuk 2019: if ( ! $Apache::lonxml::usestyle ) {
2020: $args=$Apache::lonxml::style_values.$args;
2021: }
1.230 albertel 2022: &Apache::lonxml::debug("Args are $args param is $param");
1.213 albertel 2023: if ($case_insensitive) {
1.419 albertel 2024: if (! ($args=~s/(my (?:.*))(\$\Q$param\E[,\)])/$1.lc($2)/ei)) {
1.213 albertel 2025: return undef;
2026: }
1.419 albertel 2027: } elsif ( $args !~ /my .*\$\Q$param\E[,\)]/ ) { return undef; }
1.132 albertel 2028: my $value=&Apache::run::run("{$args;".'return $'.$param.'}',$safeeval); #'
1.230 albertel 2029: &Apache::lonxml::debug("first run is $value");
1.341 albertel 2030: if ($value =~ /^[\$\@\%][a-zA-Z_]\w*$/) {
1.230 albertel 2031: &Apache::lonxml::debug("doing second");
2032: my @result=&Apache::run::run("return $value",$safeeval,1);
2033: if (!defined($result[0])) {
2034: return $value
2035: } else {
2036: if (wantarray) { return @result; } else { return $result[0]; }
2037: }
1.132 albertel 2038: } else {
2039: return $value;
2040: }
2041: }
2042:
1.438 albertel 2043: sub register_insert_xml {
2044: my $parser = HTML::LCParser->new($Apache::lonnet::perlvar{'lonTabDir'}
2045: .'/insertlist.xml');
2046: my ($tagnum,$in_help)=(0,0);
1.442 albertel 2047: my @alltags;
1.438 albertel 2048: my $tag;
2049: while (my $token = $parser->get_token()) {
2050: if ($token->[0] eq 'S') {
2051: my $key;
1.525 ! raeburn 2052: if ($token->[1] eq 'tag') {
1.438 albertel 2053: $tag = $token->[2]{'name'};
1.525 ! raeburn 2054: if (defined($tag)) {
! 2055: $insertlist{$tagnum.'.tag'} = $tag;
! 2056: $insertlist{$tag.'.num'} = $tagnum;
! 2057: push(@alltags,$tag);
! 2058: }
1.438 albertel 2059: } elsif ($in_help && $token->[1] eq 'file') {
2060: $key = $tag.'.helpfile';
2061: } elsif ($in_help && $token->[1] eq 'description') {
2062: $key = $tag.'.helpdesc';
2063: } elsif ($token->[1] eq 'description' ||
2064: $token->[1] eq 'color' ||
2065: $token->[1] eq 'show' ) {
2066: $key = $tag.'.'.$token->[1];
2067: } elsif ($token->[1] eq 'insert_sub') {
2068: $key = $tag.'.function';
2069: } elsif ($token->[1] eq 'help') {
2070: $in_help=1;
2071: } elsif ($token->[1] eq 'allow') {
1.442 albertel 2072: $key = $tag.'.allow';
1.438 albertel 2073: }
2074: if (defined($key)) {
2075: $insertlist{$key} = $parser->get_text();
2076: $insertlist{$key} =~ s/(^\s*|\s*$ )//gx;
2077: }
2078: } elsif ($token->[0] eq 'E') {
2079: if ($token->[1] eq 'tag') {
2080: undef($tag);
2081: $tagnum++;
2082: } elsif ($token->[1] eq 'help') {
2083: undef($in_help);
2084: }
2085: }
2086: }
1.442 albertel 2087:
2088: # parse the allows and ignore tags set to <show>no</show>
2089: foreach my $tag (@alltags) {
1.519 raeburn 2090: next if (!exists($insertlist{$tag.'.allow'}));
2091: my $allow = $insertlist{$tag.'.allow'};
1.442 albertel 2092: foreach my $element (split(',',$allow)) {
2093: $element =~ s/(^\s*|\s*$ )//gx;
1.519 raeburn 2094: if (!exists($insertlist{$element.'.show'})
2095: || $insertlist{$element.'.show'} ne 'no') {
1.442 albertel 2096: push(@{ $insertlist{$tag.'.which'} },$element);
2097: }
2098: }
2099: }
1.438 albertel 2100: }
2101:
2102: sub register_insert {
2103: return ®ister_insert_xml(@_);
2104: # &dump_insertlist('2');
2105: }
2106:
2107: sub dump_insertlist {
2108: my ($ext) = @_;
2109: open(XML,">/tmp/insertlist.xml.$ext");
2110: print XML ("<insertlist>");
2111: my $i=0;
2112:
2113: while (exists($insertlist{"$i.tag"})) {
2114: my $tag = $insertlist{"$i.tag"};
2115: print XML ("
2116: \t<tag name=\"$tag\">");
2117: if (defined($insertlist{"$tag.description"})) {
2118: print XML ("
2119: \t\t<description>".$insertlist{"$tag.description"}."</description>");
2120: }
2121: if (defined($insertlist{"$tag.color"})) {
2122: print XML ("
2123: \t\t<color>".$insertlist{"$tag.color"}."</color>");
2124: }
2125: if (defined($insertlist{"$tag.function"})) {
2126: print XML ("
2127: \t\t<insert_sub>".$insertlist{"$tag.function"}."</insert_sub>");
2128: }
2129: if (defined($insertlist{"$tag.show"})
2130: && $insertlist{"$tag.show"} ne 'yes') {
2131: print XML ("
2132: \t\t<show>".$insertlist{"$tag.show"}."</show>");
2133: }
2134: if (defined($insertlist{"$tag.helpfile"})) {
2135: print XML ("
2136: \t\t<help>
2137: \t\t\t<file>".$insertlist{"$tag.helpfile"}."</file>");
2138: if ($insertlist{"$tag.helpdesc"} ne '') {
2139: print XML ("
2140: \t\t\t<description>".$insertlist{"$tag.helpdesc"}."</description>");
2141: }
2142: print XML ("
2143: \t\t</help>");
2144: }
2145: if (defined($insertlist{"$tag.which"})) {
2146: print XML ("
2147: \t\t<allow>".join(',',sort(@{ $insertlist{"$tag.which"} }))."</allow>");
2148: }
2149: print XML ("
2150: \t</tag>");
2151: $i++;
2152: }
2153: print XML ("\n</insertlist>\n");
2154: close(XML);
2155: }
2156:
1.98 albertel 2157: sub description {
1.437 albertel 2158: my ($token)=@_;
2159: my $tag = &get_tag($token);
2160: return $insertlist{$tag.'.description'};
1.268 bowersj2 2161: }
2162:
2163: # Returns a list containing the help file, and the description
2164: sub helpinfo {
1.437 albertel 2165: my ($token)=@_;
2166: my $tag = &get_tag($token);
2167: return ($insertlist{$tag.'.helpfile'}, $insertlist{$tag.'.helpdesc'});
2168: }
2169:
2170: sub get_tag {
2171: my ($token)=@_;
2172: my $tagnum;
2173: my $tag=$token->[1];
2174: foreach my $namespace (reverse(@Apache::lonxml::namespace)) {
2175: my $testtag = $namespace.'::'.$tag;
2176: $tagnum = $insertlist{"$testtag.num"};
2177: last if (defined($tagnum));
2178: }
2179: if (!defined($tagnum)) {
2180: $tagnum = $Apache::lonxml::insertlist{"$tag.num"};
2181: }
2182: return $insertlist{"$tagnum.tag"};
1.98 albertel 2183: }
1.123 albertel 2184:
1.485 onken 2185: ############################################################
2186: # PDF-FORM-METHODS
2187:
2188: =pod
2189:
1.508 onken 2190: =item &print_pdf_radiobutton(fieldname, value)
1.485 onken 2191:
1.508 onken 2192: Returns a latexline to generate a PDF-Form-Radiobutton.
2193: Note: Radiobuttons with equal names are automaticly grouped
2194: in a selection-group.
1.485 onken 2195:
1.508 onken 2196: $fieldname: PDF internalname of the radiobutton(group)
2197: $value: Value of radiobutton
1.485 onken 2198:
2199: =cut
2200: sub print_pdf_radiobutton {
1.508 onken 2201: my ($fieldname, $value) = @_;
2202: return '\radioButton[\symbolchoice{circle}]{'
2203: .$fieldname.'}{10bp}{10bp}{'.$value.'}';
1.485 onken 2204: }
2205:
2206:
2207: =pod
2208:
2209: =item &print_pdf_start_combobox(fieldname)
2210:
2211: Starts a latexline to generate a PDF-Form-Combobox with text.
2212:
2213: $fieldname: PDF internal name of the Combobox
2214:
2215: =cut
2216: sub print_pdf_start_combobox {
2217: my $result;
2218: my ($fieldName) = @_;
2219: $result .= '\begin{tabularx}{\textwidth}{p{2.5cm}X}'."\n";
2220: $result .= '\comboBox[]{'.$fieldName.'}{2.3cm}{14bp}{'; #
2221:
2222: return $result;
2223: }
2224:
2225:
2226: =pod
2227:
2228: =item &print_pdf_add_combobox_option(options)
2229:
2230: Generates a latexline to add Options to a PDF-Form-ComboBox.
2231:
2232: $option: PDF internal name of the Combobox-Option
2233:
2234: =cut
2235: sub print_pdf_add_combobox_option {
2236:
2237: my $result;
2238: my ($option) = @_;
2239:
2240: $result .= '('.$option.')';
2241:
2242: return $result;
2243: }
2244:
2245:
2246: =pod
2247:
2248: =item &print_pdf_end_combobox(text) {
2249:
2250: Returns latexcode to end a PDF-Form-Combobox with text.
2251:
2252: =cut
2253: sub print_pdf_end_combobox {
2254: my $result;
2255: my ($text) = @_;
2256:
2257: $result .= '}&'.$text."\\\\\n";
2258: $result .= '\end{tabularx}' . "\n";
2259: $result .= '\hspace{2mm}' . "\n";
2260: return $result;
2261: }
2262:
2263:
2264: =pod
2265:
2266: =item &print_pdf_hiddenField(fieldname, user, domain)
2267:
2268: Returns a latexline to generate a PDF-Form-hiddenField with userdata.
2269:
2270: $fieldname label for hiddentextfield
2271: $user: name of user
2272: $domain: domain of user
2273:
2274: =cut
2275: sub print_pdf_hiddenfield {
2276: my $result;
2277: my ($fieldname, $user, $domain) = @_;
2278:
2279: $result .= '\textField [\F{\FHidden}\F{-\FPrint}\V{'.$domain.'&'.$user.'}]{'.$fieldname.'}{0in}{0in}'."\n";
2280:
2281: return $result;
2282: }
2283:
1.1 sakharuk 2284: 1;
2285: __END__
1.68 www 2286:
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