Annotation of loncom/xml/lonxml.pm, revision 1.529
1.2 sakharuk 1: # The LearningOnline Network with CAPA
1.3 sakharuk 2: # XML Parser Module
1.2 sakharuk 3: #
1.529 ! raeburn 4: # $Id: lonxml.pm,v 1.528 2011/12/28 13:15:00 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();
1.529 ! raeburn 116: use Apache::lonnavmaps();
1.79 www 117:
1.462 foxr 118: #==================================== Main subroutine: xmlparse
119:
1.72 albertel 120: #debugging control, to turn on debugging modify the correct handler
1.462 foxr 121:
1.72 albertel 122: $Apache::lonxml::debug=0;
1.206 albertel 123:
124: # keeps count of the number of warnings and errors generated in a parse
125: $warningcount=0;
126: $errorcount=0;
1.72 albertel 127:
128: #path to the directory containing the file currently being processed
129: @pwd=();
130:
131: #these two are used for capturing a subset of the output for later processing,
132: #don't touch them directly use &startredirection and &endredirection
133: @outputstack = ();
134: $redirection = 0;
135:
136: #controls wheter the <import> tag actually does
137: $import = 1;
138: @extlinks=();
139:
140: # meta mode is a bit weird only some output is to be turned off
141: #<output> tag turns metamode off (defined in londefdef.pm)
142: $metamode = 0;
143:
144: # turns on and of run::evaluate actually derefencing var refs
145: $evaluate = 1;
1.7 albertel 146:
1.74 albertel 147: # data structure for eidt mode, determines what tags can go into what other tags
148: %insertlist=();
1.68 www 149:
1.99 albertel 150: # stores the list of active tag namespaces
1.76 albertel 151: @namespace=();
152:
1.448 albertel 153: # stores all Scrit Vars displays for later showing
154: my @script_var_displays=();
155:
1.172 albertel 156: # a pointer the the Apache request object
157: $Apache::lonxml::request='';
158:
1.216 sakharuk 159: # a problem number counter, and check on ether it is used
1.237 sakharuk 160: $Apache::lonxml::counter=1;
1.204 albertel 161: $Apache::lonxml::counter_changed=0;
162:
1.462 foxr 163: # Part counter hash. In analysis mode, the
164: # problems can use this to record which parts increment the counter
165: # by how much. The counter subs will maintain this hash via
166: # their optional part parameters. Note that the assumption is that
167: # analysis is done in one request and therefore it is not necessary to
168: # save this information request-to-request.
169:
170:
171: %Apache::lonxml::counters_per_part = ();
172:
1.212 albertel 173: #internal check on whether to look at style defs
174: $Apache::lonxml::usestyle=1;
1.260 albertel 175:
176: #locations used to store the parameter string for style substitutions
177: $Apache::lonxml::style_values='';
178: $Apache::lonxml::style_end_values='';
1.212 albertel 179:
1.281 albertel 180: #array of ssi calls that need to occur after we are done parsing
181: @Apache::lonxml::ssi_info=();
182:
1.282 albertel 183: #should we do the postag variable interpolation
184: $Apache::lonxml::post_evaluate=1;
185:
1.295 albertel 186: #a header message to emit in the case of any generated warning or errors
187: $Apache::lonxml::warnings_error_header='';
188:
1.396 foxr 189: # Control whether or not LaTeX symbols should be substituted for their
190: # \ style equivalents...this may be turned off e.g. in an verbatim
191: # environment.
192:
193: $Apache::lonxml::substitute_LaTeX_symbols = 1; # Starts out on.
194:
195: sub enable_LaTeX_substitutions {
196: $Apache::lonxml::substitute_LaTeX_symbols = 1;
197: }
198: sub disable_LaTeX_substitutions {
199: $Apache::lonxml::substitute_LaTeX_symbols = 0;
200: }
201:
1.68 www 202: sub xmlend {
1.335 sakharuk 203: my ($target,$parser)=@_;
1.278 www 204: my $mode='xml';
205: my $status='OPEN';
1.368 albertel 206: if ($Apache::lonhomework::parsing_a_problem ||
207: $Apache::lonhomework::parsing_a_task ) {
1.278 www 208: $mode='problem';
209: $status=$Apache::inputtags::status[-1];
210: }
1.362 matthew 211: my $discussion;
1.379 albertel 212: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
213: ['LONCAPA_INTERNAL_no_discussion']);
1.528 www 214: if (
215: ( (!exists($env{'form.LONCAPA_INTERNAL_no_discussion'}))
216: || ($env{'form.LONCAPA_INTERNAL_no_discussion'} ne 'true')
217: )
218: && ($env{'form.inhibitmenu'} ne 'yes')
219: ) {
1.362 matthew 220: $discussion=&Apache::lonfeedback::list_discussion($mode,$status);
221: }
1.334 sakharuk 222: if ($target eq 'tex') {
1.335 sakharuk 223: $discussion.='<tex>\keephidden{ENDOFPROBLEM}\vskip 0.5mm\noindent\makebox[\textwidth/$number_of_columns][b]{\hrulefill}\end{document}</tex>';
1.334 sakharuk 224: &Apache::lonxml::newparser($parser,\$discussion,'');
225: return '';
226: }
1.405 albertel 227:
1.407 albertel 228: return $discussion;
1.119 www 229: }
230:
1.48 albertel 231: sub printalltags {
232: my $temp;
233: foreach $temp (sort keys %Apache::lonxml::alltags) {
1.141 albertel 234: &Apache::lonxml::debug("$temp -- ".
235: join(',',@{ $Apache::lonxml::alltags{$temp} }));
1.48 albertel 236: }
237: }
1.31 sakharuk 238:
1.3 sakharuk 239: sub xmlparse {
1.172 albertel 240: my ($request,$target,$content_file_string,$safeinit,%style_for_target) = @_;
1.96 albertel 241:
1.172 albertel 242: &setup_globals($request,$target);
1.232 albertel 243: &Apache::inputtags::initialize_inputtags();
1.370 albertel 244: &Apache::bridgetask::initialize_bridgetask();
1.232 albertel 245: &Apache::outputtags::initialize_outputtags();
246: &Apache::edit::initialize_edit();
1.287 albertel 247: &Apache::londefdef::initialize_londefdef();
1.244 albertel 248:
1.178 www 249: #
250: # do we have a course style file?
251: #
252:
1.372 albertel 253: if ($env{'request.course.id'} && $env{'request.state'} ne 'construct') {
1.178 www 254: my $bodytext=
1.372 albertel 255: $env{'course.'.$env{'request.course.id'}.'.default_xml_style'};
1.178 www 256: if ($bodytext) {
1.337 albertel 257: foreach my $file (split(',',$bodytext)) {
258: my $location=&Apache::lonnet::filelocation('',$file);
259: my $styletext=&Apache::lonnet::getfile($location);
260: if ($styletext ne '-1') {
261: %style_for_target = (%style_for_target,
262: &Apache::style::styleparser($target,$styletext));
263: }
264: }
265: }
1.449 albertel 266: } elsif ($env{'construct.style'}
267: && ($env{'request.state'} eq 'construct')) {
1.372 albertel 268: my $location=&Apache::lonnet::filelocation('',$env{'construct.style'});
1.291 sakharuk 269: my $styletext=&Apache::lonnet::getfile($location);
1.449 albertel 270: if ($styletext ne '-1') {
271: %style_for_target = (%style_for_target,
272: &Apache::style::styleparser($target,$styletext));
273: }
1.178 www 274: }
1.255 sakharuk 275: #&printalltags();
1.16 albertel 276: my @pars = ();
1.372 albertel 277: my $pwd=$env{'request.filename'};
1.23 albertel 278: $pwd =~ s:/[^/]*$::;
279: &newparser(\@pars,\$content_file_string,$pwd);
1.24 sakharuk 280:
1.3 sakharuk 281: my $safeeval = new Safe;
1.40 albertel 282: my $safehole = new Safe::Hole;
1.82 ng 283: &init_safespace($target,$safeeval,$safehole,$safeinit);
1.3 sakharuk 284: #-------------------- Redefinition of the target in the case of compound target
285:
286: ($target, my @tenta) = split('&&',$target);
287:
1.150 albertel 288: my @stack = ();
1.3 sakharuk 289: my @parstack = ();
1.358 albertel 290: &initdepth();
291: &init_alarm();
1.101 albertel 292: my $finaloutput = &inner_xmlparse($target,\@stack,\@parstack,\@pars,
1.394 albertel 293: $safeeval,\%style_for_target,1);
1.255 sakharuk 294:
1.425 albertel 295: if (@stack) {
1.482 bisitz 296: &warning(&mt('At end of file some tags were still left unclosed:').
297: ' <tt><'.join('></tt>, <tt><',reverse(@stack)).
1.425 albertel 298: '></tt>');
299: }
1.372 albertel 300: if ($env{'request.uri'}) {
301: &writeallows($env{'request.uri'});
1.125 www 302: }
1.281 albertel 303: &do_registered_ssi();
1.204 albertel 304: if ($Apache::lonxml::counter_changed) { &store_counter() }
1.393 albertel 305:
306: &clean_safespace($safeeval);
307:
1.448 albertel 308: if (@script_var_displays) {
1.527 www 309: my $scriptoutput = join('',@script_var_displays);
310: $finaloutput=~s{(</body>\s*</html>)\s*$}{$scriptoutput$1}s;
1.448 albertel 311: undef(@script_var_displays);
312: }
1.469 albertel 313: &init_state();
1.372 albertel 314: if ($env{'form.return_only_error_and_warning_counts'}) {
1.473 www 315: if ($env{'request.filename'}=~/\.(html|htm|xml)$/i) {
316: my $error=&verify_html($content_file_string);
317: if ($error) { $errorcount++; }
318: }
1.361 www 319: return "$errorcount:$warningcount";
320: }
1.3 sakharuk 321: return $finaloutput;
1.106 www 322: }
323:
1.191 albertel 324: sub latex_special_symbols {
1.272 albertel 325: my ($string,$where)=@_;
1.396 foxr 326: #
327: # If e.g. in verbatim mode, then don't substitute.
328: # but return original string.
329: #
330: if (!($Apache::lonxml::substitute_LaTeX_symbols)) {
331: return $string;
332: }
1.235 sakharuk 333: if ($where eq 'header') {
1.414 foxr 334: $string =~ s/\\/\$\\backslash\$/g; # \ -> $\backslash$ per LaTex line by line pg 10.
1.311 albertel 335: $string =~ s/(\$|%|\{|\})/\\$1/g;
336: $string=&Apache::lonprintout::character_chart($string);
337: # any & or # leftover should be safe to just escape
338: $string=~s/([^\\])\&/$1\\\&/g;
339: $string=~s/([^\\])\#/$1\\\#/g;
1.415 foxr 340: $string =~ s/_/\\_/g; # _ -> \_
341: $string =~ s/\^/\\\^{}/g; # ^ -> \^{}
1.229 sakharuk 342: } else {
1.312 albertel 343: $string=~s/\\/\\ensuremath{\\backslash}/g;
1.367 albertel 344: $string=~s/\\\%|\%/\\\%/g;
345: $string=~s/\\{|{/\\{/g;
346: $string=~s/\\}|}/\\}/g;
1.378 albertel 347: $string=~s/\\ensuremath\\{\\backslash\\}/\\ensuremath{\\backslash}/g;
1.367 albertel 348: $string=~s/\\\$|\$/\\\$/g;
349: $string=~s/\\\_|\_/\\\_/g;
1.313 albertel 350: $string=~s/([^\\]|^)(\~|\^)/$1\\$2\\strut /g;
1.310 sakharuk 351: $string=~s/(>|<)/\\ensuremath\{$1\}/g; #more or less
1.311 albertel 352: $string=&Apache::lonprintout::character_chart($string);
353: # any & or # leftover should be safe to just escape
1.367 albertel 354: $string=~s/\\\&|\&/\\\&/g;
355: $string=~s/\\\#|\#/\\\#/g;
1.332 sakharuk 356: $string=~s/\|/\$\\mid\$/g;
1.310 sakharuk 357: #single { or } How to escape?
1.229 sakharuk 358: }
1.272 albertel 359: return $string;
1.188 sakharuk 360: }
361:
1.101 albertel 362: sub inner_xmlparse {
1.394 albertel 363: my ($target,$stack,$parstack,$pars,$safeeval,$style_for_target,$start)=@_;
1.101 albertel 364: my $finaloutput = '';
365: my $result;
366: my $token;
1.258 albertel 367: my $dontpop=0;
1.389 albertel 368: my $startredirection = $Apache::lonxml::redirection;
1.101 albertel 369: while ( $#$pars > -1 ) {
370: while ($token = $$pars['-1']->get_token) {
1.261 albertel 371: if (($token->[0] eq 'T') || ($token->[0] eq 'C') ) {
1.101 albertel 372: if ($metamode<1) {
1.190 albertel 373: my $text=$token->[1];
1.193 albertel 374: if ($token->[0] eq 'C' && $target eq 'tex') {
1.239 sakharuk 375: $text = '';
376: # $text = '%'.$text."\n";
1.182 sakharuk 377: }
1.190 albertel 378: $result.=$text;
1.101 albertel 379: }
1.261 albertel 380: } elsif (($token->[0] eq 'D')) {
381: if ($metamode<1 && $target eq 'web') {
382: my $text=$token->[1];
383: $result.=$text;
384: }
1.101 albertel 385: } elsif ($token->[0] eq 'PI') {
1.261 albertel 386: if ($metamode<1 && $target eq 'web') {
1.101 albertel 387: $result=$token->[2];
388: }
389: } elsif ($token->[0] eq 'S') {
1.140 albertel 390: # add tag to stack
1.101 albertel 391: push (@$stack,$token->[1]);
392: # add parameters list to another stack
393: push (@$parstack,&parstring($token));
1.140 albertel 394: &increasedepth($token);
1.212 albertel 395: if ($Apache::lonxml::usestyle &&
396: exists($$style_for_target{$token->[1]})) {
397: $Apache::lonxml::usestyle=0;
398: my $string=$$style_for_target{$token->[1]}.
399: '<LONCAPA_INTERNAL_TURN_STYLE_ON />';
400: &Apache::lonxml::newparser($pars,\$string);
1.257 albertel 401: $Apache::lonxml::style_values=$$parstack[-1];
1.259 albertel 402: $Apache::lonxml::style_end_values=$$parstack[-1];
1.101 albertel 403: } else {
404: $result = &callsub("start_$token->[1]", $target, $token, $stack,
405: $parstack, $pars, $safeeval, $style_for_target);
1.140 albertel 406: }
1.101 albertel 407: } elsif ($token->[0] eq 'E') {
1.212 albertel 408: if ($Apache::lonxml::usestyle &&
409: exists($$style_for_target{'/'."$token->[1]"})) {
410: $Apache::lonxml::usestyle=0;
411: my $string=$$style_for_target{'/'.$token->[1]}.
1.258 albertel 412: '<LONCAPA_INTERNAL_TURN_STYLE_ON end="'.$token->[1].'" />';
1.212 albertel 413: &Apache::lonxml::newparser($pars,\$string);
1.259 albertel 414: $Apache::lonxml::style_values=$Apache::lonxml::style_end_values;
415: $Apache::lonxml::style_end_values='';
1.258 albertel 416: $dontpop=1;
1.101 albertel 417: } else {
1.258 albertel 418: #clear out any tags that didn't end
419: while ($token->[1] ne $$stack['-1'] && ($#$stack > -1)) {
420: my $lasttag=$$stack[-1];
1.317 albertel 421: if ($token->[1] =~ /^\Q$lasttag\E$/i) {
1.483 bisitz 422: &Apache::lonxml::warning(&mt('Using tag [_1] on line [_2] as end tag to [_3]','</'.$token->[1].'>','.$token->[3].','<'.$$stack[-1].'>'));
1.258 albertel 423: last;
424: } else {
1.483 bisitz 425: &Apache::lonxml::warning(&mt('Found tag [_1] on line [_2] when looking for [_3] in file.','</'.$token->[1].'>',$token->[3],'</'.$$stack[-1].'>'));
1.258 albertel 426: &end_tag($stack,$parstack,$token);
427: }
428: }
429: $result = &callsub("end_$token->[1]", $target, $token, $stack,
430: $parstack, $pars,$safeeval, $style_for_target);
1.101 albertel 431: }
432: } else {
433: &Apache::lonxml::error("Unknown token event :$token->[0]:$token->[1]:");
434: }
435: #evaluate variable refs in result
1.282 albertel 436: if ($Apache::lonxml::post_evaluate &&$result ne "") {
1.257 albertel 437: my $extras;
438: if (!$Apache::lonxml::usestyle) {
439: $extras=$Apache::lonxml::style_values;
440: }
1.488 raeburn 441: if ( $#$parstack > -1 ) {
442: $result=&Apache::run::evaluate($result,$safeeval,$extras.$$parstack[-1]);
443: } else {
444: $result= &Apache::run::evaluate($result,$safeeval,$extras);
1.487 raeburn 445: }
1.163 albertel 446: }
1.282 albertel 447: $Apache::lonxml::post_evaluate=1;
448:
1.190 albertel 449: if (($token->[0] eq 'T') || ($token->[0] eq 'C') || ($token->[0] eq 'D') ) {
1.249 albertel 450: #Style file definitions should be correct
1.250 albertel 451: if ($target eq 'tex' && ($Apache::lonxml::usestyle)) {
1.311 albertel 452: $result=&latex_special_symbols($result);
1.249 albertel 453: }
1.190 albertel 454: }
455:
1.169 albertel 456: if ($Apache::lonxml::redirection) {
457: $Apache::lonxml::outputstack['-1'] .= $result;
458: } else {
459: $finaloutput.=$result;
460: }
461: $result = '';
462:
1.258 albertel 463: if ($token->[0] eq 'E' && !$dontpop) {
1.101 albertel 464: &end_tag($stack,$parstack,$token);
465: }
1.258 albertel 466: $dontpop=0;
1.224 albertel 467: }
1.212 albertel 468: if ($#$pars > -1) {
469: pop @$pars;
470: pop @Apache::lonxml::pwd;
471: }
1.101 albertel 472: }
473:
474: # if ($target eq 'meta') {
475: # $finaloutput.=&endredirection;
476: # }
477:
1.394 albertel 478: if ( $start && $target eq 'grade') { &endredirection(); }
1.389 albertel 479: if ( $Apache::lonxml::redirection > $startredirection) {
480: while ($Apache::lonxml::redirection > $startredirection) {
481: $finaloutput .= &endredirection();
1.387 albertel 482: }
483: }
1.101 albertel 484: if (($ENV{'QUERY_STRING'}) && ($target eq 'web')) {
485: $finaloutput=&afterburn($finaloutput);
1.509 www 486: }
487: if ($target eq 'modified') {
488: # if modfied, handle startpart and endpart
489: $finaloutput=~s/\<startpartmarker[^\>]*\>(.*)\<endpartmarker[^\>]*\>/<part>$1<\/part>/gs;
1.216 sakharuk 490: }
1.101 albertel 491: return $finaloutput;
492: }
1.67 www 493:
1.318 matthew 494: ##
495: ## Looks to see if there is a subroutine defined for this tag. If so, call it,
496: ## otherwise do not call it as we do not know what it is.
497: ##
1.7 albertel 498: sub callsub {
1.84 albertel 499: my ($sub,$target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.7 albertel 500: my $currentstring='';
1.72 albertel 501: my $nodefault;
1.7 albertel 502: {
1.59 albertel 503: my $sub1;
1.7 albertel 504: no strict 'refs';
1.68 www 505: my $tag=$token->[1];
1.236 www 506: # get utterly rid of extended html tags
507: if ($tag=~/^x\-/i) { return ''; }
1.141 albertel 508: my $space=$Apache::lonxml::alltags{$tag}[-1];
1.68 www 509: if (!$space) {
1.141 albertel 510: $tag=~tr/A-Z/a-z/;
1.68 www 511: $sub=~tr/A-Z/a-z/;
1.141 albertel 512: $space=$Apache::lonxml::alltags{$tag}[-1]
1.68 www 513: }
1.97 albertel 514:
515: my $deleted=0;
516: if (($token->[0] eq 'S') && ($target eq 'modified')) {
517: $deleted=&Apache::edit::handle_delete($space,$target,$token,$tagstack,
518: $parstack,$parser,$safeeval,
519: $style);
520: }
521: if (!$deleted) {
522: if ($space) {
1.220 albertel 523: #&Apache::lonxml::debug("Calling sub $sub in $space $metamode");
1.97 albertel 524: $sub1="$space\:\:$sub";
525: ($currentstring,$nodefault) = &$sub1($target,$token,$tagstack,
526: $parstack,$parser,$safeeval,
527: $style);
528: } else {
1.318 matthew 529: if ($target eq 'tex') {
530: # throw away tag name
531: return '';
532: }
1.220 albertel 533: #&Apache::lonxml::debug("NOT Calling sub $sub in $space $metamode");
1.97 albertel 534: if ($metamode <1) {
535: if (defined($token->[4]) && ($metamode < 1)) {
536: $currentstring = $token->[4];
537: } else {
538: $currentstring = $token->[2];
539: }
1.62 sakharuk 540: }
1.7 albertel 541: }
1.97 albertel 542: # &Apache::lonxml::debug("nodefalt:$nodefault:");
543: if ($currentstring eq '' && $nodefault eq '') {
544: if ($target eq 'edit') {
1.220 albertel 545: #&Apache::lonxml::debug("doing default edit for $token->[1]");
1.97 albertel 546: if ($token->[0] eq 'S') {
547: $currentstring = &Apache::edit::tag_start($target,$token);
548: } elsif ($token->[0] eq 'E') {
549: $currentstring = &Apache::edit::tag_end($target,$token);
550: }
1.441 albertel 551: }
552: }
553: if ($target eq 'modified' && $nodefault eq '') {
554: if ($currentstring eq '') {
555: if ($token->[0] eq 'S') {
556: $currentstring = $token->[4];
557: } elsif ($token->[0] eq 'E') {
558: $currentstring = $token->[2];
559: } else {
560: $currentstring = $token->[2];
561: }
562: }
1.97 albertel 563: if ($token->[0] eq 'S') {
1.447 albertel 564: $currentstring.=&Apache::edit::handle_insert();
1.210 www 565: } elsif ($token->[0] eq 'E') {
1.447 albertel 566: $currentstring.=&Apache::edit::handle_insertafter($token->[1]);
1.97 albertel 567: }
1.72 albertel 568: }
1.7 albertel 569: }
570: use strict 'refs';
571: }
572: return $currentstring;
1.82 ng 573: }
574:
1.465 albertel 575: {
576: my %state;
577:
578: sub init_state {
579: undef(%state);
580: }
581:
582: sub set_state {
583: my ($key,$value) = @_;
584: $state{$key} = $value;
585: return $value;
586: }
587: sub get_state {
588: my ($key) = @_;
589: return $state{$key};
590: }
591: }
592:
1.96 albertel 593: sub setup_globals {
1.172 albertel 594: my ($request,$target)=@_;
595: $Apache::lonxml::request=$request;
1.205 www 596: $errorcount=0;
597: $warningcount=0;
1.490 www 598: $Apache::lonxml::internal_error=0;
1.207 albertel 599: $Apache::lonxml::default_homework_loaded=0;
1.212 albertel 600: $Apache::lonxml::usestyle=1;
1.204 albertel 601: &init_counter();
1.462 foxr 602: &clear_bubble_lines_for_part();
1.465 albertel 603: &init_state();
1.469 albertel 604: &set_state('target',$target);
1.101 albertel 605: @Apache::lonxml::pwd=();
1.124 albertel 606: @Apache::lonxml::extlinks=();
1.448 albertel 607: @script_var_displays=();
1.281 albertel 608: @Apache::lonxml::ssi_info=();
1.282 albertel 609: $Apache::lonxml::post_evaluate=1;
1.295 albertel 610: $Apache::lonxml::warnings_error_header='';
1.397 albertel 611: $Apache::lonxml::substitute_LaTeX_symbols = 1;
1.96 albertel 612: if ($target eq 'meta') {
613: $Apache::lonxml::redirection = 0;
614: $Apache::lonxml::metamode = 1;
615: $Apache::lonxml::evaluate = 1;
616: $Apache::lonxml::import = 0;
1.129 albertel 617: } elsif ($target eq 'answer') {
618: $Apache::lonxml::redirection = 0;
619: $Apache::lonxml::metamode = 1;
620: $Apache::lonxml::evaluate = 1;
621: $Apache::lonxml::import = 1;
1.96 albertel 622: } elsif ($target eq 'grade') {
1.387 albertel 623: &startredirection(); #ended in inner_xmlparse on exit
1.96 albertel 624: $Apache::lonxml::metamode = 0;
625: $Apache::lonxml::evaluate = 1;
626: $Apache::lonxml::import = 1;
627: } elsif ($target eq 'modified') {
628: $Apache::lonxml::redirection = 0;
629: $Apache::lonxml::metamode = 0;
630: $Apache::lonxml::evaluate = 0;
631: $Apache::lonxml::import = 0;
632: } elsif ($target eq 'edit') {
633: $Apache::lonxml::redirection = 0;
634: $Apache::lonxml::metamode = 0;
635: $Apache::lonxml::evaluate = 0;
636: $Apache::lonxml::import = 0;
1.163 albertel 637: } elsif ($target eq 'analyze') {
638: $Apache::lonxml::redirection = 0;
639: $Apache::lonxml::metamode = 0;
640: $Apache::lonxml::evaluate = 1;
641: $Apache::lonxml::import = 1;
1.96 albertel 642: } else {
643: $Apache::lonxml::redirection = 0;
644: $Apache::lonxml::metamode = 0;
645: $Apache::lonxml::evaluate = 1;
646: $Apache::lonxml::import = 1;
647: }
648: }
649:
1.82 ng 650: sub init_safespace {
651: my ($target,$safeeval,$safehole,$safeinit) = @_;
1.511 foxr 652: $safeeval->reval('use Math::Complex;');
653: $safeeval->reval('use LaTeX::Table;');
1.393 albertel 654: $safeeval->deny_only(':dangerous');
1.383 albertel 655: $safeeval->permit_only(":default");
1.82 ng 656: $safeeval->permit("entereval");
657: $safeeval->permit(":base_math");
658: $safeeval->permit("sort");
1.286 albertel 659: $safeeval->permit("time");
1.480 www 660: $safeeval->permit("caller");
1.371 albertel 661: $safeeval->deny("rand");
662: $safeeval->deny("srand");
1.82 ng 663: $safeeval->deny(":base_io");
1.102 albertel 664: $safehole->wrap(\&Apache::scripttag::xmlparse,$safeeval,'&xmlparse');
1.251 albertel 665: $safehole->wrap(\&Apache::outputtags::multipart,$safeeval,'&multipart');
1.82 ng 666: $safehole->wrap(\&Apache::lonnet::EXT,$safeeval,'&EXT');
1.324 albertel 667: $safehole->wrap(\&Apache::chemresponse::chem_standard_order,$safeeval,
668: '&chem_standard_order');
1.369 albertel 669: $safehole->wrap(\&Apache::response::check_status,$safeeval,'&check_status');
1.471 bisitz 670: $safehole->wrap(\&Apache::response::implicit_multiplication,$safeeval,'&implicit_multiplication');
1.324 albertel 671:
1.431 www 672: $safehole->wrap(\&Apache::lonmaxima::maxima_eval,$safeeval,'&maxima_eval');
1.432 www 673: $safehole->wrap(\&Apache::lonmaxima::maxima_check,$safeeval,'&maxima_check');
1.433 albertel 674: $safehole->wrap(\&Apache::lonmaxima::maxima_cas_formula_fix,$safeeval,
675: '&maxima_cas_formula_fix');
676:
1.494 www 677: $safehole->wrap(\&Apache::lonr::r_eval,$safeeval,'&r_eval');
1.497 www 678: $safehole->wrap(\&Apache::lonr::Rentry,$safeeval,'&Rentry');
679: $safehole->wrap(\&Apache::lonr::Rarray,$safeeval,'&Rarray');
1.494 www 680: $safehole->wrap(\&Apache::lonr::r_check,$safeeval,'&r_check');
681: $safehole->wrap(\&Apache::lonr::r_cas_formula_fix,$safeeval,
682: '&r_cas_formula_fix');
683:
1.433 albertel 684: $safehole->wrap(\&Apache::caparesponse::capa_formula_fix,$safeeval,
685: '&capa_formula_fix');
1.431 www 686:
1.480 www 687: $safehole->wrap(\&Apache::lonlocal::locallocaltime,$safeeval,
688: '&locallocaltime');
689:
1.82 ng 690: $safehole->wrap(\&Math::Cephes::asin,$safeeval,'&asin');
691: $safehole->wrap(\&Math::Cephes::acos,$safeeval,'&acos');
692: $safehole->wrap(\&Math::Cephes::atan,$safeeval,'&atan');
693: $safehole->wrap(\&Math::Cephes::sinh,$safeeval,'&sinh');
694: $safehole->wrap(\&Math::Cephes::cosh,$safeeval,'&cosh');
695: $safehole->wrap(\&Math::Cephes::tanh,$safeeval,'&tanh');
696: $safehole->wrap(\&Math::Cephes::asinh,$safeeval,'&asinh');
697: $safehole->wrap(\&Math::Cephes::acosh,$safeeval,'&acosh');
698: $safehole->wrap(\&Math::Cephes::atanh,$safeeval,'&atanh');
699: $safehole->wrap(\&Math::Cephes::erf,$safeeval,'&erf');
700: $safehole->wrap(\&Math::Cephes::erfc,$safeeval,'&erfc');
701: $safehole->wrap(\&Math::Cephes::j0,$safeeval,'&j0');
702: $safehole->wrap(\&Math::Cephes::j1,$safeeval,'&j1');
703: $safehole->wrap(\&Math::Cephes::jn,$safeeval,'&jn');
704: $safehole->wrap(\&Math::Cephes::jv,$safeeval,'&jv');
705: $safehole->wrap(\&Math::Cephes::y0,$safeeval,'&y0');
706: $safehole->wrap(\&Math::Cephes::y1,$safeeval,'&y1');
707: $safehole->wrap(\&Math::Cephes::yn,$safeeval,'&yn');
708: $safehole->wrap(\&Math::Cephes::yv,$safeeval,'&yv');
1.215 albertel 709:
710: $safehole->wrap(\&Math::Cephes::bdtr ,$safeeval,'&bdtr' );
711: $safehole->wrap(\&Math::Cephes::bdtrc ,$safeeval,'&bdtrc' );
712: $safehole->wrap(\&Math::Cephes::bdtri ,$safeeval,'&bdtri' );
713: $safehole->wrap(\&Math::Cephes::btdtr ,$safeeval,'&btdtr' );
714: $safehole->wrap(\&Math::Cephes::chdtr ,$safeeval,'&chdtr' );
715: $safehole->wrap(\&Math::Cephes::chdtrc,$safeeval,'&chdtrc');
716: $safehole->wrap(\&Math::Cephes::chdtri,$safeeval,'&chdtri');
717: $safehole->wrap(\&Math::Cephes::fdtr ,$safeeval,'&fdtr' );
718: $safehole->wrap(\&Math::Cephes::fdtrc ,$safeeval,'&fdtrc' );
719: $safehole->wrap(\&Math::Cephes::fdtri ,$safeeval,'&fdtri' );
720: $safehole->wrap(\&Math::Cephes::gdtr ,$safeeval,'&gdtr' );
721: $safehole->wrap(\&Math::Cephes::gdtrc ,$safeeval,'&gdtrc' );
722: $safehole->wrap(\&Math::Cephes::nbdtr ,$safeeval,'&nbdtr' );
723: $safehole->wrap(\&Math::Cephes::nbdtrc,$safeeval,'&nbdtrc');
724: $safehole->wrap(\&Math::Cephes::nbdtri,$safeeval,'&nbdtri');
725: $safehole->wrap(\&Math::Cephes::ndtr ,$safeeval,'&ndtr' );
726: $safehole->wrap(\&Math::Cephes::ndtri ,$safeeval,'&ndtri' );
727: $safehole->wrap(\&Math::Cephes::pdtr ,$safeeval,'&pdtr' );
728: $safehole->wrap(\&Math::Cephes::pdtrc ,$safeeval,'&pdtrc' );
729: $safehole->wrap(\&Math::Cephes::pdtri ,$safeeval,'&pdtri' );
730: $safehole->wrap(\&Math::Cephes::stdtr ,$safeeval,'&stdtr' );
731: $safehole->wrap(\&Math::Cephes::stdtri,$safeeval,'&stdtri');
732:
1.383 albertel 733: $safehole->wrap(\&Math::Cephes::Matrix::mat,$safeeval,'&mat');
734: $safehole->wrap(\&Math::Cephes::Matrix::new,$safeeval,
735: '&Math::Cephes::Matrix::new');
736: $safehole->wrap(\&Math::Cephes::Matrix::coef,$safeeval,
737: '&Math::Cephes::Matrix::coef');
738: $safehole->wrap(\&Math::Cephes::Matrix::clr,$safeeval,
739: '&Math::Cephes::Matrix::clr');
740: $safehole->wrap(\&Math::Cephes::Matrix::add,$safeeval,
741: '&Math::Cephes::Matrix::add');
742: $safehole->wrap(\&Math::Cephes::Matrix::sub,$safeeval,
743: '&Math::Cephes::Matrix::sub');
744: $safehole->wrap(\&Math::Cephes::Matrix::mul,$safeeval,
745: '&Math::Cephes::Matrix::mul');
746: $safehole->wrap(\&Math::Cephes::Matrix::div,$safeeval,
747: '&Math::Cephes::Matrix::div');
748: $safehole->wrap(\&Math::Cephes::Matrix::inv,$safeeval,
749: '&Math::Cephes::Matrix::inv');
750: $safehole->wrap(\&Math::Cephes::Matrix::transp,$safeeval,
751: '&Math::Cephes::Matrix::transp');
752: $safehole->wrap(\&Math::Cephes::Matrix::simq,$safeeval,
753: '&Math::Cephes::Matrix::simq');
754: $safehole->wrap(\&Math::Cephes::Matrix::mat_to_vec,$safeeval,
755: '&Math::Cephes::Matrix::mat_to_vec');
756: $safehole->wrap(\&Math::Cephes::Matrix::vec_to_mat,$safeeval,
757: '&Math::Cephes::Matrix::vec_to_mat');
758: $safehole->wrap(\&Math::Cephes::Matrix::check,$safeeval,
759: '&Math::Cephes::Matrix::check');
760: $safehole->wrap(\&Math::Cephes::Matrix::check,$safeeval,
761: '&Math::Cephes::Matrix::check');
762:
1.215 albertel 763: # $safehole->wrap(\&Math::Cephes::new_fract,$safeeval,'&new_fract');
764: # $safehole->wrap(\&Math::Cephes::radd,$safeeval,'&radd');
765: # $safehole->wrap(\&Math::Cephes::rsub,$safeeval,'&rsub');
766: # $safehole->wrap(\&Math::Cephes::rmul,$safeeval,'&rmul');
767: # $safehole->wrap(\&Math::Cephes::rdiv,$safeeval,'&rdiv');
768: # $safehole->wrap(\&Math::Cephes::euclid,$safeeval,'&euclid');
769:
1.91 ng 770: $safehole->wrap(\&Math::Random::random_beta,$safeeval,'&math_random_beta');
771: $safehole->wrap(\&Math::Random::random_chi_square,$safeeval,'&math_random_chi_square');
772: $safehole->wrap(\&Math::Random::random_exponential,$safeeval,'&math_random_exponential');
773: $safehole->wrap(\&Math::Random::random_f,$safeeval,'&math_random_f');
774: $safehole->wrap(\&Math::Random::random_gamma,$safeeval,'&math_random_gamma');
775: $safehole->wrap(\&Math::Random::random_multivariate_normal,$safeeval,'&math_random_multivariate_normal');
776: $safehole->wrap(\&Math::Random::random_multinomial,$safeeval,'&math_random_multinomial');
777: $safehole->wrap(\&Math::Random::random_noncentral_chi_square,$safeeval,'&math_random_noncentral_chi_square');
778: $safehole->wrap(\&Math::Random::random_noncentral_f,$safeeval,'&math_random_noncentral_f');
779: $safehole->wrap(\&Math::Random::random_normal,$safeeval,'&math_random_normal');
780: $safehole->wrap(\&Math::Random::random_permutation,$safeeval,'&math_random_permutation');
1.93 ng 781: $safehole->wrap(\&Math::Random::random_permuted_index,$safeeval,'&math_random_permuted_index');
1.91 ng 782: $safehole->wrap(\&Math::Random::random_uniform,$safeeval,'&math_random_uniform');
783: $safehole->wrap(\&Math::Random::random_poisson,$safeeval,'&math_random_poisson');
784: $safehole->wrap(\&Math::Random::random_uniform_integer,$safeeval,'&math_random_uniform_integer');
785: $safehole->wrap(\&Math::Random::random_negative_binomial,$safeeval,'&math_random_negative_binomial');
786: $safehole->wrap(\&Math::Random::random_binomial,$safeeval,'&math_random_binomial');
787: $safehole->wrap(\&Math::Random::random_seed_from_phrase,$safeeval,'&random_seed_from_phrase');
788: $safehole->wrap(\&Math::Random::random_set_seed_from_phrase,$safeeval,'&random_set_seed_from_phrase');
789: $safehole->wrap(\&Math::Random::random_get_seed,$safeeval,'&random_get_seed');
790: $safehole->wrap(\&Math::Random::random_set_seed,$safeeval,'&random_set_seed');
1.458 albertel 791: $safehole->wrap(\&Apache::loncommon::languages,$safeeval,'&languages');
1.305 albertel 792: $safehole->wrap(\&Apache::lonxml::error,$safeeval,'&LONCAPA_INTERNAL_ERROR');
1.311 albertel 793: $safehole->wrap(\&Apache::lonxml::debug,$safeeval,'&LONCAPA_INTERNAL_DEBUG');
1.420 albertel 794: $safehole->wrap(\&Apache::lonnet::logthis,$safeeval,'&LONCAPA_INTERNAL_LOGTHIS');
795: $safehole->wrap(\&Apache::inputtags::finalizeawards,$safeeval,'&LONCAPA_INTERNAL_FINALIZEAWARDS');
1.322 albertel 796: $safehole->wrap(\&Apache::caparesponse::get_sigrange,$safeeval,'&LONCAPA_INTERNAL_get_sigrange');
1.521 www 797: $safehole->wrap(\&Apache::functionplotresponse::fpr_val,$safeeval,'&fpr_val');
1.520 www 798: $safehole->wrap(\&Apache::functionplotresponse::fpr_f,$safeeval,'&fpr_f');
799: $safehole->wrap(\&Apache::functionplotresponse::fpr_dfdx,$safeeval,'&fpr_dfdx');
800: $safehole->wrap(\&Apache::functionplotresponse::fpr_d2fdx2,$safeeval,'&fpr_d2fdx2');
1.524 www 801: $safehole->wrap(\&Apache::functionplotresponse::fpr_vectorcoords,$safeeval,'&fpr_vectorcoords');
802: $safehole->wrap(\&Apache::functionplotresponse::fpr_objectcoords,$safeeval,'&fpr_objectcoords');
803: $safehole->wrap(\&Apache::functionplotresponse::fpr_vectorlength,$safeeval,'&fpr_vectorlength');
804: $safehole->wrap(\&Apache::functionplotresponse::fpr_vectorangle,$safeeval,'&fpr_vectorangle');
1.520 www 805:
1.430 albertel 806: # use Data::Dumper;
807: # $safehole->wrap(\&Data::Dumper::Dumper,$safeeval,'&LONCAPA_INTERNAL_Dumper');
1.82 ng 808: #need to inspect this class of ops
809: # $safeeval->deny(":base_orig");
1.331 albertel 810: $safeeval->permit("require");
1.91 ng 811: $safeinit .= ';$external::target="'.$target.'";';
1.82 ng 812: &Apache::run::run($safeinit,$safeeval);
1.373 albertel 813: &initialize_rndseed($safeeval);
814: }
1.303 albertel 815:
1.393 albertel 816: sub clean_safespace {
817: my ($safeeval) = @_;
818: delete_package_recurse($safeeval->{Root});
819: }
820:
821: sub delete_package_recurse {
822: my ($package) = @_;
823: my @subp;
824: {
825: no strict 'refs';
826: while (my ($key,$val) = each(%{*{"$package\::"}})) {
827: if (!defined($val)) { next; }
828: local (*ENTRY) = $val;
829: if (defined *ENTRY{HASH} && $key =~ /::$/ &&
830: $key ne "main::" && $key ne "<none>::")
831: {
832: my ($p) = $package ne "main" ? "$package\::" : "";
833: ($p .= $key) =~ s/::$//;
834: push(@subp,$p);
835: }
836: }
837: }
838: foreach my $p (@subp) {
839: delete_package_recurse($p);
840: }
841: Symbol::delete_package($package);
842: }
843:
1.373 albertel 844: sub initialize_rndseed {
845: my ($safeeval)=@_;
846: my $rndseed;
1.423 albertel 847: my ($symb,$courseid,$domain,$name) = &Apache::lonnet::whichuser();
1.373 albertel 848: $rndseed=&Apache::lonnet::rndseed($symb,$courseid,$domain,$name);
849: my $safeinit = '$external::randomseed="'.$rndseed.'";';
850: &Apache::lonxml::debug("Setting rndseed to $rndseed");
851: &Apache::run::run($safeinit,$safeeval);
1.207 albertel 852: }
853:
854: sub default_homework_load {
855: my ($safeeval)=@_;
856: &Apache::lonxml::debug('Loading default_homework');
1.522 raeburn 857: my $default=&Apache::lonnet::getfile($Apache::lonnet::perlvar{'lonIncludes'}.
858: '/default_homework.lcpm');
1.241 albertel 859: if ($default eq -1) {
1.207 albertel 860: &Apache::lonxml::error("<b>Unable to find <i>default_homework.lcpm</i></b>");
861: } else {
862: &Apache::run::run($default,$safeeval);
863: $Apache::lonxml::default_homework_loaded=1;
864: }
1.17 albertel 865: }
866:
1.358 albertel 867: {
868: my $alarm_depth;
869: sub init_alarm {
870: alarm(0);
871: $alarm_depth=0;
872: }
873:
874: sub start_alarm {
875: if ($alarm_depth<1) {
876: my $old=alarm($Apache::lonnet::perlvar{'lonScriptTimeout'});
877: if ($old) {
878: &Apache::lonxml::error("Cancelled an alarm of $old, this shouldn't occur.");
879: }
880: }
881: $alarm_depth++;
882: }
883:
884: sub end_alarm {
885: $alarm_depth--;
886: if ($alarm_depth<1) { alarm(0); }
887: }
888: }
1.328 albertel 889: my $metamode_was;
1.55 albertel 890: sub startredirection {
1.328 albertel 891: if (!$Apache::lonxml::redirection) {
892: $metamode_was=$Apache::lonxml::metamode;
893: }
894: $Apache::lonxml::metamode=0;
895: $Apache::lonxml::redirection++;
896: push (@Apache::lonxml::outputstack, '');
1.55 albertel 897: }
898:
899: sub endredirection {
1.328 albertel 900: if (!$Apache::lonxml::redirection) {
1.380 www 901: &Apache::lonxml::error("Endredirection was called before a startredirection, perhaps you have unbalanced tags. Some debugging information:".join ":",caller);
1.328 albertel 902: return '';
903: }
904: $Apache::lonxml::redirection--;
905: if (!$Apache::lonxml::redirection) {
906: $Apache::lonxml::metamode=$metamode_was;
907: }
908: pop @Apache::lonxml::outputstack;
1.97 albertel 909: }
1.459 albertel 910: sub in_redirection {
911: return ($Apache::lonxml::redirection > 0)
912: }
1.97 albertel 913:
914: sub end_tag {
915: my ($tagstack,$parstack,$token)=@_;
916: pop(@$tagstack);
917: pop(@$parstack);
918: &decreasedepth($token);
1.55 albertel 919: }
920:
1.17 albertel 921: sub initdepth {
922: @Apache::lonxml::depthcounter=();
1.439 albertel 923: undef($Apache::lonxml::last_depth_count);
1.17 albertel 924: }
925:
1.438 albertel 926:
1.339 albertel 927: my @timers;
928: my $lasttime;
1.438 albertel 929: # @Apache::lonxml::depthcounter -> count of tags that exist so
930: # far at each level
1.439 albertel 931: # $Apache::lonxml::last_depth_count -> when ascending, need to
932: # remember the count for the level below the current level (for
933: # example going from 1_2 -> 1 -> 1_3 need to remember the 2 )
1.438 albertel 934:
1.17 albertel 935: sub increasedepth {
1.19 albertel 936: my ($token) = @_;
1.439 albertel 937: push(@Apache::lonxml::depthcounter,$Apache::lonxml::last_depth_count+1);
938: undef($Apache::lonxml::last_depth_count);
1.340 albertel 939: my $time;
940: if ($Apache::lonxml::debug eq "1") {
941: push(@timers,[&gettimeofday()]);
942: $time=&tv_interval($lasttime);
943: $lasttime=[&gettimeofday()];
944: }
1.439 albertel 945: my $spacing=' 'x($#Apache::lonxml::depthcounter);
1.438 albertel 946: $Apache::lonxml::curdepth=join('_',@Apache::lonxml::depthcounter);
1.439 albertel 947: # &Apache::lonxml::debug("s$spacing$Apache::lonxml::depth : $Apache::lonxml::olddepth : $Apache::lonxml::curdepth : $token->[1] : $time");
1.54 albertel 948: #print "<br />s $Apache::lonxml::depth : $Apache::lonxml::olddepth : $curdepth : $token->[1]\n";
1.17 albertel 949: }
950:
951: sub decreasedepth {
1.19 albertel 952: my ($token) = @_;
1.439 albertel 953: if ( $#Apache::lonxml::depthcounter == -1) {
954: &Apache::lonxml::warning(&mt("Missing tags, unable to properly run file."));
1.43 albertel 955: }
1.439 albertel 956: $Apache::lonxml::last_depth_count = pop(@Apache::lonxml::depthcounter);
957:
1.340 albertel 958: my ($timer,$time);
959: if ($Apache::lonxml::debug eq "1") {
960: $timer=pop(@timers);
961: $time=&tv_interval($lasttime);
962: $lasttime=[&gettimeofday()];
963: }
1.439 albertel 964: my $spacing=' 'x($#Apache::lonxml::depthcounter);
965: $Apache::lonxml::curdepth = join('_',@Apache::lonxml::depthcounter);
966: # &Apache::lonxml::debug("e$spacing$Apache::lonxml::depth : $Apache::lonxml::olddepth : $Apache::lonxml::curdepth : $token->[1] : $time : ".&tv_interval($timer));
1.54 albertel 967: #print "<br />e $Apache::lonxml::depth : $Apache::lonxml::olddepth : $token->[1] : $curdepth\n";
1.1 sakharuk 968: }
1.19 albertel 969:
1.399 albertel 970: sub get_id {
971: my ($parstack,$safeeval)=@_;
972: my $id= &Apache::lonxml::get_param('id',$parstack,$safeeval);
1.449 albertel 973: if ($env{'request.state'} eq 'construct' && $id =~ /([._]|[^\w\d\s[:punct:]])/) {
1.498 bisitz 974: &error(&mt('ID [_1] contains invalid characters. IDs are only allowed to contain letters, numbers, spaces and -','"<tt>'.$id.'</tt>"'));
1.399 albertel 975: }
976: if ($id =~ /^\s*$/) { $id = $Apache::lonxml::curdepth; }
977: return $id;
978: }
979:
1.180 albertel 980: sub get_all_text_unbalanced {
1.190 albertel 981: #there is a copy of this in lonpublisher.pm
1.326 albertel 982: my($tag,$pars)= @_;
983: my $token;
984: my $result='';
985: $tag='<'.$tag.'>';
986: while ($token = $$pars[-1]->get_token) {
987: if (($token->[0] eq 'T')||($token->[0] eq 'C')||($token->[0] eq 'D')) {
1.386 albertel 988: if ($token->[0] eq 'T' && $token->[2]) {
1.382 albertel 989: $result.='<![CDATA['.$token->[1].']]>';
990: } else {
991: $result.=$token->[1];
992: }
1.326 albertel 993: } elsif ($token->[0] eq 'PI') {
994: $result.=$token->[2];
995: } elsif ($token->[0] eq 'S') {
996: $result.=$token->[4];
997: } elsif ($token->[0] eq 'E') {
998: $result.=$token->[2];
999: }
1000: if ($result =~ /\Q$tag\E/is) {
1001: ($result,my $redo)=$result =~ /(.*)\Q$tag\E(.*)/is;
1002: #&Apache::lonxml::debug('Got a winner with leftovers ::'.$2);
1003: #&Apache::lonxml::debug('Result is :'.$1);
1004: $redo=$tag.$redo;
1005: &Apache::lonxml::newparser($pars,\$redo);
1006: last;
1007: }
1008: }
1009: return $result
1.462 foxr 1010:
1.204 albertel 1011: }
1012:
1.462 foxr 1013: #########################################################################
1014: # #
1015: # bubble line counter management #
1016: # #
1017: #########################################################################
1018:
1.447 albertel 1019: =pod
1020:
1021: For bubble grading mode and exam bubble printing mode, the tracking of
1022: the current 'bubble line number' is stored in the %env element
1023: 'form.counter', and is modifed and handled by the following routines.
1024:
1025: The value of it is stored in $Apache:lonxml::counter when live and
1026: stored back to env after done.
1027:
1.522 raeburn 1028: =item &increment_counter($increment, $part_response);
1.447 albertel 1029:
1030: Increments the internal counter environment variable a specified amount
1031:
1032: Optional Arguments:
1033: $increment - amount to increment by (defaults to 1)
1.462 foxr 1034: Also 1 if the value is negative or zero.
1.467 foxr 1035: $part_response - A concatenation of the part and response id
1036: identifying exactly what is being 'answered'.
1037:
1.447 albertel 1038:
1039: =cut
1040:
1.204 albertel 1041: sub increment_counter {
1.467 foxr 1042: my ($increment, $part_response) = @_;
1.481 raeburn 1043: if ($env{'form.grade_noincrement'}) { return; }
1.462 foxr 1044: if (!defined($increment) || $increment le 0) {
1045: $increment = 1;
1046: }
1047: $Apache::lonxml::counter += $increment;
1048:
1.466 foxr 1049: # If the caller supplied the response_id parameter,
1.462 foxr 1050: # Maintain its counter.. creating if necessary.
1051:
1.470 albertel 1052: if (defined($part_response)) {
1.467 foxr 1053: if (!defined($Apache::lonxml::counters_per_part{$part_response})) {
1054: $Apache::lonxml::counters_per_part{$part_response} = 0;
1.462 foxr 1055: }
1.467 foxr 1056: $Apache::lonxml::counters_per_part{$part_response} += $increment;
1057: my $new_value = $Apache::lonxml::counters_per_part{$part_response};
1.247 albertel 1058: }
1.462 foxr 1059:
1.289 sakharuk 1060: $Apache::lonxml::counter_changed=1;
1.204 albertel 1061: }
1062:
1.447 albertel 1063: =pod
1064:
1.461 foxr 1065: =item &init_counter($increment);
1.447 albertel 1066:
1067: Initialize the internal counter environment variable
1068:
1069: =cut
1070:
1.204 albertel 1071: sub init_counter {
1.391 albertel 1072: if ($env{'request.state'} eq 'construct') {
1073: $Apache::lonxml::counter=1;
1074: $Apache::lonxml::counter_changed=1;
1075: } elsif (defined($env{'form.counter'})) {
1.372 albertel 1076: $Apache::lonxml::counter=$env{'form.counter'};
1.247 albertel 1077: $Apache::lonxml::counter_changed=0;
1.237 sakharuk 1078: } else {
1.204 albertel 1079: $Apache::lonxml::counter=1;
1.247 albertel 1080: $Apache::lonxml::counter_changed=1;
1.204 albertel 1081: }
1082: }
1083:
1084: sub store_counter {
1.474 raeburn 1085: &Apache::lonnet::appenv({'form.counter' => $Apache::lonxml::counter});
1.401 albertel 1086: $Apache::lonxml::counter_changed=0;
1.204 albertel 1087: return '';
1.180 albertel 1088: }
1089:
1.398 albertel 1090: {
1091: my $state;
1092: sub clear_problem_counter {
1093: undef($state);
1094: &Apache::lonnet::delenv('form.counter');
1095: &Apache::lonxml::init_counter();
1096: &Apache::lonxml::store_counter();
1097: }
1098:
1099: sub remember_problem_counter {
1.422 albertel 1100: &Apache::lonnet::transfer_profile_to_env(undef,undef,1);
1.398 albertel 1101: $state = $env{'form.counter'};
1102: }
1103:
1104: sub restore_problem_counter {
1105: if (defined($state)) {
1.474 raeburn 1106: &Apache::lonnet::appenv({'form.counter' => $state});
1.398 albertel 1107: }
1108: }
1.401 albertel 1109: sub get_problem_counter {
1110: if ($Apache::lonxml::counter_changed) { &store_counter() }
1.422 albertel 1111: &Apache::lonnet::transfer_profile_to_env(undef,undef,1);
1.401 albertel 1112: return $env{'form.counter'};
1113: }
1.398 albertel 1114: }
1115:
1.462 foxr 1116: =pod
1117:
1.468 albertel 1118: =item bubble_lines_for_part(part_response)
1.462 foxr 1119:
1120: Returns the number of lines required to get a response for
1.467 foxr 1121: $part_response (this is just $Apache::lonxml::counters_per_part{$part_response}
1.462 foxr 1122:
1123: =cut
1124:
1125: sub bubble_lines_for_part {
1.467 foxr 1126: my ($part_response) = @_;
1.462 foxr 1127:
1.467 foxr 1128: if (!defined($Apache::lonxml::counters_per_part{$part_response})) {
1.462 foxr 1129: return 0;
1130: } else {
1.467 foxr 1131: return $Apache::lonxml::counters_per_part{$part_response};
1.462 foxr 1132: }
1133: }
1134:
1135: =pod
1136:
1137: =item clear_bubble_lines_for_part
1138:
1139: Clears the hash of bubble lines per part. If a caller
1140: needs to analyze several resources this should be called between
1141: resources to reset the hash for each problem being analyzed.
1142:
1143: =cut
1144:
1145: sub clear_bubble_lines_for_part {
1146: undef(%Apache::lonxml::counters_per_part);
1147: }
1148:
1149: =pod
1150:
1.468 albertel 1151: =item set_bubble_lines(part_response, value)
1.462 foxr 1152:
1153: If there is a problem part, that for whatever reason
1154: requires bubble lines that are not
1155: the same as the counter increment, it can call this sub during
1156: analysis to set its hash value explicitly.
1157:
1158: =cut
1159:
1160: sub set_bubble_lines {
1.467 foxr 1161: my ($part_response, $value) = @_;
1.462 foxr 1162:
1.467 foxr 1163: $Apache::lonxml::counters_per_part{$part_response} = $value;
1.462 foxr 1164: }
1165:
1166: =pod
1167:
1168: =item get_bubble_line_hash
1169:
1170: Returns the current bubble line hash. This is assumed to
1171: be small so we return a copy
1172:
1173:
1174: =cut
1175:
1176: sub get_bubble_line_hash {
1177: return %Apache::lonxml::counters_per_part;
1178: }
1179:
1180:
1181: #--------------------------------------------------
1182:
1.19 albertel 1183: sub get_all_text {
1.270 albertel 1184: my($tag,$pars,$style)= @_;
1185: my $gotfullstack=1;
1186: if (ref($pars) ne 'ARRAY') {
1187: $gotfullstack=0;
1188: $pars=[$pars];
1189: }
1190: if (ref($style) ne 'HASH') {
1191: $style={};
1192: }
1193: my $depth=0;
1194: my $token;
1195: my $result='';
1196: if ( $tag =~ m:^/: ) {
1197: my $tag=substr($tag,1);
1198: #&Apache::lonxml::debug("have:$tag:");
1199: my $top_empty=0;
1200: while (($depth >=0) && ($#$pars > -1) && (!$top_empty)) {
1201: while (($depth >=0) && ($token = $$pars[-1]->get_token)) {
1202: #&Apache::lonxml::debug("e token:$token->[0]:$depth:$token->[1]:".$#$pars.":".$#Apache::lonxml::pwd);
1203: if (($token->[0] eq 'T')||($token->[0] eq 'C')||($token->[0] eq 'D')) {
1.382 albertel 1204: if ($token->[2]) {
1205: $result.='<![CDATA['.$token->[1].']]>';
1206: } else {
1207: $result.=$token->[1];
1208: }
1.270 albertel 1209: } elsif ($token->[0] eq 'PI') {
1210: $result.=$token->[2];
1211: } elsif ($token->[0] eq 'S') {
1.316 albertel 1212: if ($token->[1] =~ /^\Q$tag\E$/i) { $depth++; }
1213: if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_ON$/) { $Apache::lonxml::usestyle=1; }
1214: if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_OFF$/) { $Apache::lonxml::usestyle=0; }
1.270 albertel 1215: $result.=$token->[4];
1216: } elsif ($token->[0] eq 'E') {
1.316 albertel 1217: if ( $token->[1] =~ /^\Q$tag\E$/i) { $depth--; }
1.270 albertel 1218: #skip sending back the last end tag
1.283 albertel 1219: if ($depth == 0 && exists($$style{'/'.$token->[1]}) && $Apache::lonxml::usestyle) {
1.270 albertel 1220: my $string=
1221: '<LONCAPA_INTERNAL_TURN_STYLE_OFF end="yes" />'.
1222: $$style{'/'.$token->[1]}.
1223: $token->[2].
1224: '<LONCAPA_INTERNAL_TURN_STYLE_ON />';
1225: &Apache::lonxml::newparser($pars,\$string);
1226: #&Apache::lonxml::debug("reParsing $string");
1227: next;
1228: }
1229: if ($depth > -1) {
1230: $result.=$token->[2];
1231: } else {
1232: $$pars[-1]->unget_token($token);
1233: }
1234: }
1235: }
1236: if (($depth >=0) && ($#$pars == 0) ) { $top_empty=1; }
1237: if (($depth >=0) && ($#$pars > 0) ) {
1238: pop(@$pars);
1239: pop(@Apache::lonxml::pwd);
1240: }
1241: }
1242: if ($top_empty && $depth >= 0) {
1243: #never found the end tag ran out of text, throw error send back blank
1244: &error('Never found end tag for <'.$tag.
1245: '> current string <pre>'.
1.314 albertel 1246: &HTML::Entities::encode($result,'<>&"').
1.270 albertel 1247: '</pre>');
1248: if ($gotfullstack) {
1249: my $newstring='</'.$tag.'>'.$result;
1250: &Apache::lonxml::newparser($pars,\$newstring);
1251: }
1252: $result='';
1253: }
1254: } else {
1255: while ($#$pars > -1) {
1256: while ($token = $$pars[-1]->get_token) {
1257: #&Apache::lonxml::debug("s token:$token->[0]:$depth:$token->[1]");
1258: if (($token->[0] eq 'T')||($token->[0] eq 'C')||
1259: ($token->[0] eq 'D')) {
1.382 albertel 1260: if ($token->[2]) {
1261: $result.='<![CDATA['.$token->[1].']]>';
1262: } else {
1263: $result.=$token->[1];
1264: }
1.270 albertel 1265: } elsif ($token->[0] eq 'PI') {
1266: $result.=$token->[2];
1267: } elsif ($token->[0] eq 'S') {
1.316 albertel 1268: if ( $token->[1] =~ /^\Q$tag\E$/i) {
1.270 albertel 1269: $$pars[-1]->unget_token($token); last;
1270: } else {
1271: $result.=$token->[4];
1272: }
1.316 albertel 1273: if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_ON$/) { $Apache::lonxml::usestyle=1; }
1274: if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_OFF$/) { $Apache::lonxml::usestyle=0; }
1.270 albertel 1275: } elsif ($token->[0] eq 'E') {
1276: $result.=$token->[2];
1277: }
1278: }
1279: if (($#$pars > 0) ) {
1280: pop(@$pars);
1281: pop(@Apache::lonxml::pwd);
1282: } else { last; }
1283: }
1284: }
1285: #&Apache::lonxml::debug("Exit:$result:");
1286: return $result
1.19 albertel 1287: }
1288:
1.23 albertel 1289: sub newparser {
1290: my ($parser,$contentref,$dir) = @_;
1.167 albertel 1291: push (@$parser,HTML::LCParser->new($contentref));
1.365 albertel 1292: $$parser[-1]->xml_mode(1);
1293: $$parser[-1]->marked_sections(1);
1.23 albertel 1294: if ( $dir eq '' ) {
1295: push (@Apache::lonxml::pwd, $Apache::lonxml::pwd[$#Apache::lonxml::pwd]);
1296: } else {
1297: push (@Apache::lonxml::pwd, $dir);
1298: }
1299: }
1.1 sakharuk 1300:
1.8 albertel 1301: sub parstring {
1.417 albertel 1302: my ($token) = @_;
1303: my (@vars,@values);
1304: foreach my $attr (@{$token->[3]}) {
1305: if ($attr!~/\W/) {
1306: my $val=$token->[2]->{$attr};
1307: $val =~ s/([\%\@\\\"\'])/\\$1/g;
1308: $val =~ s/(\$[^\{a-zA-Z_])/\\$1/g;
1309: $val =~ s/(\$)$/\\$1/;
1310: #if ($val =~ m/^[\%\@]/) { $val="\\".$val; }
1311: push(@vars,"\$$attr");
1312: push(@values,"\"$val\"");
1313: }
1314: }
1315: my $var_init =
1316: (@vars) ? 'my ('.join(',',@vars).') = ('.join(',',@values).');'
1317: : '';
1318: return $var_init;
1.8 albertel 1319: }
1.22 albertel 1320:
1.384 albertel 1321: sub extlink {
1322: my ($res,$exact)=@_;
1323: if (!$exact) {
1324: $res=&Apache::lonnet::hreflocation($Apache::lonxml::pwd[-1],$res);
1325: }
1326: push(@Apache::lonxml::extlinks,$res)
1327: }
1328:
1.34 www 1329: sub writeallows {
1.126 www 1330: unless ($#extlinks>=0) { return; }
1.377 albertel 1331: my $thisurl = &Apache::lonnet::clutter(shift);
1.372 albertel 1332: if ($env{'httpref.'.$thisurl}) {
1333: $thisurl=$env{'httpref.'.$thisurl};
1.111 www 1334: }
1.34 www 1335: my $thisdir=$thisurl;
1336: $thisdir=~s/\/[^\/]+$//;
1337: my %httpref=();
1.142 albertel 1338: foreach (@extlinks) {
1.34 www 1339: $httpref{'httpref.'.
1.444 albertel 1340: &Apache::lonnet::hreflocation($thisdir,&unescape($_))}=$thisurl;
1.142 albertel 1341: }
1.126 www 1342: @extlinks=();
1.474 raeburn 1343: &Apache::lonnet::appenv(\%httpref);
1.34 www 1344: }
1345:
1.281 albertel 1346: sub register_ssi {
1347: my ($url,%form)=@_;
1348: push (@Apache::lonxml::ssi_info,{'url'=>$url,'form'=>\%form});
1349: return '';
1350: }
1351:
1352: sub do_registered_ssi {
1353: foreach my $info (@Apache::lonxml::ssi_info) {
1354: my %form=%{ $info->{'form'}};
1355: my $url=$info->{'url'};
1356: &Apache::lonnet::ssi($url,%form);
1357: }
1358: }
1.448 albertel 1359:
1360: sub add_script_result {
1361: my ($display) = @_;
1362: push(@script_var_displays, $display);
1363: }
1364:
1.66 www 1365: #
1366: # Afterburner handles anchors, highlights and links
1367: #
1368: sub afterburn {
1369: my $result=shift;
1.154 albertel 1370: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
1371: ['highlight','anchor','link']);
1.372 albertel 1372: if ($env{'form.highlight'}) {
1373: foreach (split(/\,/,$env{'form.highlight'})) {
1.66 www 1374: my $anchorname=$_;
1375: my $matchthis=$anchorname;
1376: $matchthis=~s/\_+/\\s\+/g;
1.317 albertel 1377: $result=~s/(\Q$matchthis\E)/\<font color=\"red\"\>$1\<\/font\>/gs;
1.142 albertel 1378: }
1.66 www 1379: }
1.372 albertel 1380: if ($env{'form.link'}) {
1381: foreach (split(/\,/,$env{'form.link'})) {
1.66 www 1382: my ($anchorname,$linkurl)=split(/\>/,$_);
1383: my $matchthis=$anchorname;
1384: $matchthis=~s/\_+/\\s\+/g;
1.317 albertel 1385: $result=~s/(\Q$matchthis\E)/\<a href=\"$linkurl\"\>$1\<\/a\>/gs;
1.142 albertel 1386: }
1.66 www 1387: }
1.372 albertel 1388: if ($env{'form.anchor'}) {
1389: my $anchorname=$env{'form.anchor'};
1.66 www 1390: my $matchthis=$anchorname;
1391: $matchthis=~s/\_+/\\s\+/g;
1.317 albertel 1392: $result=~s/(\Q$matchthis\E)/\<a name=\"$anchorname\"\>$1\<\/a\>/s;
1.66 www 1393: $result.=(<<"ENDSCRIPT");
1.226 albertel 1394: <script type="text/javascript">
1.66 www 1395: document.location.hash='$anchorname';
1396: </script>
1397: ENDSCRIPT
1398: }
1399: return $result;
1400: }
1401:
1.79 www 1402: sub storefile {
1403: my ($file,$contents)=@_;
1.290 albertel 1404: &Apache::lonnet::correct_line_ends(\$contents);
1.79 www 1405: if (my $fh=Apache::File->new('>'.$file)) {
1406: print $fh $contents;
1407: $fh->close();
1.271 www 1408: return 1;
1.147 albertel 1409: } else {
1.482 bisitz 1410: &warning(&mt('Unable to save file [_1]','<tt>'.$file.'</tt>'));
1.271 www 1411: return 0;
1.79 www 1412: }
1413: }
1414:
1.151 albertel 1415: sub createnewhtml {
1.321 www 1416: my $title=&mt('Title of document goes here');
1417: my $body=&mt('Body of document goes here');
1418: my $filecontents=(<<SIMPLECONTENT);
1.78 www 1419: <html>
1420: <head>
1.321 www 1421: <title>$title</title>
1.78 www 1422: </head>
1423: <body bgcolor="#FFFFFF">
1.321 www 1424: $body
1.78 www 1425: </body>
1426: </html>
1427: SIMPLECONTENT
1.321 www 1428: return $filecontents;
1.151 albertel 1429: }
1430:
1.274 albertel 1431: sub createnewsty {
1432: my $filecontents=(<<SIMPLECONTENT);
1433: <definetag name="">
1434: <render>
1435: <web></web>
1436: <tex></tex>
1437: </render>
1438: </definetag>
1439: SIMPLECONTENT
1440: return $filecontents;
1441: }
1442:
1.493 raeburn 1443: sub createnewjs {
1444: my $filecontents=(<<SIMPLECONTENT);
1445: <script type="text/javascript" language="Javascript">
1446:
1447: </script>
1448: SIMPLECONTENT
1449: return $filecontents;
1450: }
1451:
1.472 www 1452: sub verify_html {
1453: my ($filecontents)=@_;
1.516 raeburn 1454: my ($is_html,$is_xml);
1455: if ($filecontents =~/(?:\<|\<\;)\?xml[^\<]*\?(?:\>|\>\;)/is) {
1456: $is_xml = 1;
1.518 raeburn 1457: } elsif ($filecontents =~/(?:\<|\<\;)html(?:\s+[^\<]+|\s*)(?:\>|\>\;)/is) {
1.516 raeburn 1458: $is_html = 1;
1459: }
1460: unless ($is_xml || $is_html) {
1461: return &mt('File does not have [_1] or [_2] starting tag','<html>','<?xml ?>');
1462: }
1463: if ($is_html) {
1464: if ($filecontents!~/(?:\<|\<\;)\/html(?:\>|\>\;)/is) {
1465: return &mt('File does not have [_1] ending tag','<html>');
1466: }
1467: if ($filecontents!~/(?:\<|\<\;)(?:body|frameset)[^\<]*(?:\>|\>\;)/is) {
1468: return &mt('File does not have [_1] or [_2] starting tag','<body>','<frameset>');
1469: }
1470: if ($filecontents!~/(?:\<|\<\;)\/(?:body|frameset)[^\<]*(?:\>|\>\;)/is) {
1471: return &mt('File does not have [_1] or [_2] ending tag','<body>','<frameset>');
1472: }
1.472 www 1473: }
1474: return '';
1475: }
1.147 albertel 1476:
1.478 www 1477: sub renderingoptions {
1478: my %langchoices=('' => '');
1479: foreach (&Apache::loncommon::languageids()) {
1480: if (&Apache::loncommon::supportedlanguagecode($_)) {
1481: $langchoices{&Apache::loncommon::supportedlanguagecode($_)}
1482: = &Apache::loncommon::plainlanguagedescription($_);
1483: }
1484: }
1.500 raeburn 1485: my $output;
1486: unless ($env{'form.forceedit'}) {
1.504 bisitz 1487: $output .=
1488: '<span class="LC_nobreak">'.
1.500 raeburn 1489: &mt('Language:').' '.
1.504 bisitz 1490: &Apache::loncommon::select_form(
1491: $env{'form.languages'},
1492: 'languages',
1.510 raeburn 1493: {&Apache::lonlocal::texthash(%langchoices)}).
1.504 bisitz 1494: '</span>';
1.500 raeburn 1495: }
1.504 bisitz 1496: $output .=
1497: ' <span class="LC_nobreak">'.
1.479 bisitz 1498: &mt('Math Rendering:').' '.
1.504 bisitz 1499: &Apache::loncommon::select_form(
1500: $env{'form.texengine'},
1501: 'texengine',
1.510 raeburn 1502: {&Apache::lonlocal::texthash
1.504 bisitz 1503: ('' => '',
1504: 'tth' => 'tth (TeX to HTML)',
1.526 dseaton 1505: 'MathJax' => 'MathJax',
1506: 'jsMath' => 'jsMath',
1.510 raeburn 1507: 'mimetex' => 'mimetex (Convert to Images)')}).
1.504 bisitz 1508: '</span>';
1.500 raeburn 1509: return $output;
1.478 www 1510: }
1511:
1.151 albertel 1512: sub inserteditinfo {
1.470 albertel 1513: my ($filecontents, $filetype, $filename)=@_;
1.314 albertel 1514: $filecontents = &HTML::Entities::encode($filecontents,'<>&"');
1.274 albertel 1515: my $xml_help = '';
1.321 www 1516: my $initialize='';
1.452 albertel 1517: my $textarea_id = 'filecont';
1.492 raeburn 1518: my $dragmath_button;
1.452 albertel 1519: my ($add_to_onload, $add_to_onresize);
1.456 albertel 1520: $initialize=&Apache::lonhtmlcommon::spellheader();
1.514 raeburn 1521: if (($filetype eq 'html') && (&Apache::lonhtmlcommon::htmlareabrowser())) {
1.463 albertel 1522: my $lang = &Apache::lonhtmlcommon::htmlarea_lang();
1.512 raeburn 1523: my %textarea_args = (
1524: fullpage => 'true',
1525: dragmath => 'math',
1526: );
1.514 raeburn 1527: $initialize .= &Apache::lonhtmlcommon::htmlareaselectactive(\%textarea_args);
1528: }
1529: $initialize .= (<<FULLPAGE);
1.321 www 1530: <script type="text/javascript">
1.514 raeburn 1531: // <![CDATA[
1.321 www 1532: function initDocument() {
1.463 albertel 1533: resize_textarea('$textarea_id','LC_aftertextarea');
1.321 www 1534: }
1.514 raeburn 1535: // ]]>
1.321 www 1536: </script>
1537: FULLPAGE
1.514 raeburn 1538: if ($filetype eq 'html') {
1539: $dragmath_button = '<span id="math_filecont">'.&Apache::lonhtmlcommon::dragmath_button('filecont',1).'</span>';
1540: $initialize .= "\n".&Apache::lonhtmlcommon::dragmath_js('EditMathPopup');
1.512 raeburn 1541: }
1.456 albertel 1542: $add_to_onload = 'initDocument();';
1543: $add_to_onresize = "resize_textarea('$textarea_id','LC_aftertextarea');";
1544:
1545: if ($filetype eq 'html') {
1.321 www 1546: $xml_help=&Apache::loncommon::helpLatexCheatsheet();
1.274 albertel 1547: }
1.452 albertel 1548:
1.254 albertel 1549: my $titledisplay=&display_title();
1.512 raeburn 1550: my $textareaclass;
1.426 banghart 1551: my %lt=&Apache::lonlocal::texthash('st' => 'Save and Edit',
1552: 'vi' => 'Save and View',
1.427 banghart 1553: 'dv' => 'Discard Edits and View',
1.428 banghart 1554: 'un' => 'undo',
1.280 www 1555: 'ed' => 'Edit');
1.512 raeburn 1556: my $spelllink = &Apache::lonhtmlcommon::spelllink('xmledit','filecont');
1.451 albertel 1557: my $textarea_events = &Apache::edit::element_change_detection();
1558: my $form_events = &Apache::edit::form_change_detection();
1.491 raeburn 1559: my $htmlerror;
1560: if ($filetype eq 'html') {
1561: $htmlerror=&verify_html($filecontents);
1562: if ($htmlerror) {
1563: $htmlerror='<span class="LC_error">'.$htmlerror.'</span>';
1564: }
1.501 raeburn 1565: if (&Apache::lonhtmlcommon::htmlareabrowser()) {
1.515 raeburn 1566: $textareaclass = 'class="LC_richDefaultOff"';
1.501 raeburn 1567: }
1.472 www 1568: }
1.78 www 1569: my $editfooter=(<<ENDFOOTER);
1.321 www 1570: $initialize
1.78 www 1571: <a name="editsection" />
1.451 albertel 1572: <form $form_events method="post" name="xmledit">
1.470 albertel 1573: <div class="LC_edit_problem_editxml_header">
1574: <table class="LC_edit_problem_header_title"><tr><td>
1575: $filename
1576: </td><td align="right">
1577: $xml_help
1578: </td></tr>
1579: </table>
1580: <div class="LC_edit_problem_discards">
1581: <input type="submit" name="discardview" accesskey="d" value="$lt{'dv'}" />
1582: <input type="submit" name="Undo" accesskey="u" value="$lt{'un'}" />
1.513 raeburn 1583: $htmlerror $dragmath_button
1.470 albertel 1584: </div>
1585: <div class="LC_edit_problem_saves">
1586: <input type="submit" name="savethisfile" accesskey="s" value="$lt{'st'}" />
1587: <input type="submit" name="viewmode" accesskey="v" value="$lt{'vi'}" />
1588: </div>
1589: </div>
1.513 raeburn 1590: <textarea $textarea_events style="width:100%" cols="80" rows="44" name="filecont" id="filecont" $textareaclass>$filecontents</textarea><br />$spelllink
1.470 albertel 1591: <div id="LC_aftertextarea">
1592: <br />
1593: $titledisplay
1594: </div>
1.78 www 1595: </form>
1.321 www 1596: </body>
1.78 www 1597: ENDFOOTER
1.452 albertel 1598: return ($editfooter,$add_to_onload,$add_to_onresize);;
1.78 www 1599: }
1600:
1.152 albertel 1601: sub get_target {
1.372 albertel 1602: my $viewgrades=&Apache::lonnet::allowed('vgr',$env{'request.course.id'});
1603: if ( $env{'request.state'} eq 'published') {
1604: if ( defined($env{'form.grade_target'})
1.152 albertel 1605: && ($viewgrades == 'F' )) {
1.372 albertel 1606: return ($env{'form.grade_target'});
1607: } elsif (defined($env{'form.grade_target'})) {
1608: if (($env{'form.grade_target'} eq 'web') ||
1609: ($env{'form.grade_target'} eq 'tex') ) {
1610: return $env{'form.grade_target'}
1.153 albertel 1611: } else {
1612: return 'web';
1613: }
1.152 albertel 1614: } else {
1615: return 'web';
1616: }
1.372 albertel 1617: } elsif ($env{'request.state'} eq 'construct') {
1618: if ( defined($env{'form.grade_target'})) {
1619: return ($env{'form.grade_target'});
1.152 albertel 1620: } else {
1621: return 'web';
1622: }
1623: } else {
1624: return 'web';
1625: }
1626: }
1627:
1.24 sakharuk 1628: sub handler {
1.255 sakharuk 1629: my $request=shift;
1.493 raeburn 1630:
1.255 sakharuk 1631: my $target=&get_target();
1.372 albertel 1632: $Apache::lonxml::debug=$env{'user.debug'};
1.255 sakharuk 1633:
1.364 albertel 1634: &Apache::loncommon::content_type($request,'text/html');
1.255 sakharuk 1635: &Apache::loncommon::no_cache($request);
1.372 albertel 1636: if ($env{'request.state'} eq 'published') {
1.363 albertel 1637: $request->set_last_modified(&Apache::lonnet::metadata($request->uri,
1638: 'lastrevisiondate'));
1639: }
1.499 raeburn 1640: # Embedded Flash movies from Camtasia served from https will not display in IE
1641: # if XML config file has expired from cache.
1642: if ($ENV{'SERVER_PORT'} == 443) {
1643: if ($request->uri =~ /\.xml$/) {
1644: my ($httpbrowser,$clientbrowser) =
1645: &Apache::loncommon::decode_user_agent($request);
1646: if ($clientbrowser =~ /^explorer$/i) {
1647: delete $request->headers_out->{'Cache-control'};
1648: delete $request->headers_out->{'Pragma'};
1649: my $expiration = time + 60;
1650: my $date=strftime("%a, %d %b %Y %H:%M:%S GMT",gmtime($expiration));
1651: $request->headers_out->set("Expires" => $date);
1652: }
1653: }
1654: }
1.255 sakharuk 1655: $request->send_http_header;
1656:
1657: return OK if $request->header_only;
1.68 www 1658:
1659:
1.255 sakharuk 1660: my $file=&Apache::lonnet::filelocation("",$request->uri);
1.502 raeburn 1661: my ($filetype,$breadcrumbtext);
1662: if ($file =~ /\.(sty|css|js|txt|tex)$/) {
1.493 raeburn 1663: $filetype=$1;
1.274 albertel 1664: } else {
1665: $filetype='html';
1666: }
1.502 raeburn 1667: if ($filetype eq 'sty') {
1668: $breadcrumbtext = 'Style File Editor';
1669: } elsif ($filetype eq 'js') {
1670: $breadcrumbtext = 'Javascript Editor';
1671: } elsif ($filetype eq 'css') {
1672: $breadcrumbtext = 'CSS Editor';
1673: } elsif ($filetype eq 'txt') {
1674: $breadcrumbtext = 'Text Editor';
1675: } elsif ($filetype eq 'tex') {
1676: $breadcrumbtext = 'TeX Editor';
1677: } else {
1678: $breadcrumbtext = 'HTML Editor';
1679: }
1.493 raeburn 1680:
1.78 www 1681: #
1682: # Edit action? Save file.
1683: #
1.428 banghart 1684: if (!($env{'request.state'} eq 'published')) {
1685: if ($env{'form.savethisfile'} || $env{'form.viewmode'} || $env{'form.Undo'}) {
1.429 albertel 1686: my $html_file=&Apache::lonnet::getfile($file);
1687: my $error = &Apache::lonhomework::handle_save_or_undo($request, \$html_file, \$env{'form.filecont'});
1.472 www 1688: if ($env{'form.savethisfile'}) {
1689: $env{'form.editmode'}='Edit'; #force edit mode
1690: }
1.255 sakharuk 1691: }
1692: }
1693: my %mystyle;
1694: my $result = '';
1695: my $filecontents=&Apache::lonnet::getfile($file);
1696: if ($filecontents eq -1) {
1.402 albertel 1697: my $start_page=&Apache::loncommon::start_page('File Error');
1.412 albertel 1698: my $end_page=&Apache::loncommon::end_page();
1.495 bisitz 1699: my $errormsg='<p class="LC_error">'
1700: .&mt('File not found: [_1]'
1701: ,'<span class="LC_filename">'.$file.'</span>')
1702: .'</p>';
1.255 sakharuk 1703: $result=(<<ENDNOTFOUND);
1.402 albertel 1704: $start_page
1.495 bisitz 1705: $errormsg
1.402 albertel 1706: $end_page
1.78 www 1707: ENDNOTFOUND
1.343 albertel 1708: $filecontents='';
1.372 albertel 1709: if ($env{'request.state'} ne 'published') {
1.274 albertel 1710: if ($filetype eq 'sty') {
1711: $filecontents=&createnewsty();
1.493 raeburn 1712: } elsif ($filetype eq 'js') {
1713: $filecontents=&createnewjs();
1.502 raeburn 1714: } elsif ($filetype ne 'css' && $filetype ne 'txt' && $filetype ne 'tex') {
1.274 albertel 1715: $filecontents=&createnewhtml();
1716: }
1.372 albertel 1717: $env{'form.editmode'}='Edit'; #force edit mode
1.255 sakharuk 1718: }
1719: } else {
1.372 albertel 1720: unless ($env{'request.state'} eq 'published') {
1.343 albertel 1721: if ($filecontents=~/BEGIN LON-CAPA Internal/) {
1.381 www 1722: &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 1723: }
1.264 www 1724: #
1725: # we are in construction space, see if edit mode forced
1.385 albertel 1726: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
1727: ['editmode']);
1.255 sakharuk 1728: }
1.427 banghart 1729: if (!$env{'form.editmode'} || $env{'form.viewmode'} || $env{'form.discardview'}) {
1.493 raeburn 1730: if ($filetype eq 'html' || $filetype eq 'sty') {
1731: &Apache::structuretags::reset_problem_globals();
1732: $result = &Apache::lonxml::xmlparse($request,$target,
1733: $filecontents,'',%mystyle);
1.455 albertel 1734: # .html files may contain <problem> or <Task> need to clean
1735: # up if it did
1.493 raeburn 1736: &Apache::structuretags::reset_problem_globals();
1737: &Apache::lonhomework::finished_parsing();
1.502 raeburn 1738: } elsif ($filetype eq 'tex') {
1.503 raeburn 1739: $result = &Apache::lontexconvert::converted(\$filecontents,
1740: $env{'form.texengine'});
1741: if ($env{'form.return_only_error_and_warning_counts'}) {
1742: $result = "$errorcount:$warningcount";
1743: }
1.493 raeburn 1744: } else {
1745: $result = $filecontents;
1746: }
1.385 albertel 1747: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
1748: ['rawmode']);
1.395 albertel 1749: if ($env{'form.rawmode'}) { $result = $filecontents; }
1.503 raeburn 1750: if (($filetype ne 'html') &&
1751: (!$env{'form.return_only_error_and_warning_counts'})) {
1.502 raeburn 1752: my $nochgview = 1;
1.495 bisitz 1753: my $controls = '';
1754: if ($env{'request.state'} eq 'construct') {
1755: $controls = &Apache::loncommon::head_subbox(
1756: &Apache::loncommon::CSTR_pageheader()
1757: .&Apache::londefdef::edit_controls($nochgview));
1758: }
1.502 raeburn 1759: if ($filetype ne 'sty' && $filetype ne 'tex') {
1.493 raeburn 1760: $result =~ s/</</g;
1761: $result =~ s/>/>/g;
1762: $result = '<table class="LC_sty_begin">'.
1763: '<tr><td><b><pre>'.$result.
1764: '</pre></b></td></tr></table>';
1765: }
1.506 droeschl 1766: my $brcrum;
1767: if ($env{'request.state'} eq 'construct') {
1.523 raeburn 1768: $brcrum = [{'href' => &Apache::loncommon::authorspace($request->uri),
1.506 droeschl 1769: 'text' => 'Construction Space'},
1770: {'href' => '',
1771: 'text' => $breadcrumbtext}];
1.493 raeburn 1772: } else {
1.506 droeschl 1773: $brcrum = ''; # FIXME: Where are we?
1.493 raeburn 1774: }
1.506 droeschl 1775: my %options = ('bread_crumbs' => $brcrum,
1776: 'bgcolor' => '#FFFFFF');
1777: $result =
1778: &Apache::loncommon::start_page(undef,undef,\%options)
1779: .$controls
1780: .$result
1781: .&Apache::loncommon::end_page();
1.493 raeburn 1782: }
1.495 bisitz 1783: }
1.147 albertel 1784: }
1.456 albertel 1785:
1.78 www 1786: #
1787: # Edit action? Insert editing commands
1788: #
1.372 albertel 1789: unless ($env{'request.state'} eq 'published') {
1.427 banghart 1790: if ($env{'form.editmode'} && (!($env{'form.viewmode'})) && (!($env{'form.discardview'})))
1.450 albertel 1791: {
1.470 albertel 1792: my $displayfile=$request->uri;
1.529 ! raeburn 1793: if ($displayfile =~ m{^/uploaded/}) {
! 1794: if ($env{'request.course.id'}) {
! 1795: my $symb = &Apache::lonnet::symbread();
! 1796: my ($map,$id,$res)=&Apache::lonnet::decode_symb($symb);
! 1797: my $navmap=Apache::lonnavmaps::navmap->new;
! 1798: if (ref($navmap)) {
! 1799: my $res = $navmap->getBySymb($symb);
! 1800: my @pathitems =
! 1801: &Apache::loncommon::get_folder_hierarchy($navmap,$map,1);
! 1802: push(@pathitems,$res->compTitle());
! 1803: $displayfile = join(' » ',@pathitems);
! 1804: }
! 1805: }
! 1806: } else {
! 1807: $displayfile=~s/^\/[^\/]*//;
! 1808: }
1.470 albertel 1809:
1.452 albertel 1810: my ($edit_info, $add_to_onload, $add_to_onresize)=
1.470 albertel 1811: &inserteditinfo($filecontents,$filetype,$displayfile);
1.450 albertel 1812:
1813: my %options =
1814: ('add_entries' =>
1.495 bisitz 1815: {'onresize' => $add_to_onresize,
1816: 'onload' => $add_to_onload, });
1.500 raeburn 1817: my $header;
1818: if ($env{'request.state'} eq 'construct') {
1819: $options{'bread_crumbs'} = [{
1.523 raeburn 1820: 'href' => &Apache::loncommon::authorspace($request->uri),
1.500 raeburn 1821: 'text' => 'Construction Space'},
1822: {'href' => '',
1.502 raeburn 1823: 'text' => $breadcrumbtext}];
1.500 raeburn 1824: $header = &Apache::loncommon::head_subbox(
1825: &Apache::loncommon::CSTR_pageheader());
1826: }
1.452 albertel 1827: my $js =
1828: &Apache::edit::js_change_detection().
1829: &Apache::loncommon::resize_textarea_js();
1.451 albertel 1830: my $start_page = &Apache::loncommon::start_page(undef,$js,
1.402 albertel 1831: \%options);
1.495 bisitz 1832: $result = $start_page
1.500 raeburn 1833: .$header
1.495 bisitz 1834: .&Apache::lonxml::message_location()
1835: .$edit_info
1836: .&Apache::loncommon::end_page();
1.493 raeburn 1837: }
1.147 albertel 1838: }
1.402 albertel 1839: if ($filetype eq 'html') { &writeallows($request->uri); }
1.501 raeburn 1840:
1.309 albertel 1841: &Apache::lonxml::add_messages(\$result);
1.255 sakharuk 1842: $request->print($result);
1843:
1844: return OK;
1.253 albertel 1845: }
1846:
1847: sub display_title {
1848: my $result;
1.372 albertel 1849: if ($env{'request.state'} eq 'construct') {
1.253 albertel 1850: my $title=&Apache::lonnet::gettitle();
1851: if (!defined($title) || $title eq '') {
1.372 albertel 1852: $title = $env{'request.filename'};
1.253 albertel 1853: $title = substr($title, rindex($title, '/') + 1);
1854: }
1.476 bisitz 1855: $result = "<script type='text/javascript'>top.document.title = '$title - LON-CAPA "
1856: .&mt('Construction Space')."';</script>";
1.253 albertel 1857: }
1858: return $result;
1.24 sakharuk 1859: }
1.147 albertel 1860:
1.22 albertel 1861: sub debug {
1.298 albertel 1862: if ($Apache::lonxml::debug eq "1") {
1863: $|=1;
1.300 albertel 1864: my $request=$Apache::lonxml::request;
1.388 albertel 1865: if (!$request) {
1866: eval { $request=Apache->request; };
1867: }
1868: if (!$request) {
1869: eval { $request=Apache2::RequestUtil->request; };
1870: }
1.314 albertel 1871: $request->print('<font size="-2"><pre>DEBUG:'.&HTML::Entities::encode($_[0],'<>&"')."</pre></font>\n");
1.346 albertel 1872: #&Apache::lonnet::logthis($_[0]);
1.298 albertel 1873: }
1.22 albertel 1874: }
1.49 albertel 1875:
1.348 albertel 1876: sub show_error_warn_msg {
1.522 raeburn 1877: if (($env{'request.filename'} eq
1878: $Apache::lonnet::perlvar{'lonDocRoot'}.'/res/lib/templates/simpleproblem.problem') &&
1879: (&Apache::lonnet::allowed('mdc',$env{'request.course.id'}))) {
1.351 albertel 1880: return 1;
1881: }
1.348 albertel 1882: return (($Apache::lonxml::debug eq 1) ||
1.372 albertel 1883: ($env{'request.state'} eq 'construct') ||
1.348 albertel 1884: ($Apache::lonhomework::browse eq 'F'
1885: &&
1.372 albertel 1886: $env{'form.show_errors'} eq 'on'));
1.348 albertel 1887: }
1888:
1.22 albertel 1889: sub error {
1.454 albertel 1890: my @errors = @_;
1891:
1.336 albertel 1892: $errorcount++;
1.454 albertel 1893:
1.490 www 1894: $Apache::lonxml::internal_error=1;
1895:
1.454 albertel 1896: if (defined($Apache::inputtags::part)) {
1897: if ( @Apache::inputtags::response ) {
1898: push(@errors,
1899: &mt("This error occurred while processing response [_1] in part [_2]",
1900: $Apache::inputtags::response[-1],
1901: $Apache::inputtags::part));
1902: } else {
1903: push(@errors,
1904: &mt("This error occurred while processing part [_1]",
1905: $Apache::inputtags::part));
1906: }
1907: }
1908:
1.348 albertel 1909: if ( &show_error_warn_msg() ) {
1.336 albertel 1910: # If printing in construction space, put the error inside <pre></pre>
1911: push(@Apache::lonxml::error_messages,
1.484 bisitz 1912: $Apache::lonxml::warnings_error_header
1913: .'<div class="LC_error">'
1914: .'<b>'.&mt('ERROR:').' </b>'.join("<br />\n",@errors)
1915: ."</div>\n");
1.336 albertel 1916: $Apache::lonxml::warnings_error_header='';
1917: } else {
1918: my $errormsg;
1919: my ($symb)=&Apache::lonnet::symbread();
1920: if ( !$symb ) {
1921: #public or browsers
1.486 bisitz 1922: $errormsg=&mt("An error occurred while processing this resource. The author has been notified.");
1.403 albertel 1923: }
1.413 albertel 1924: my $host=$Apache::lonnet::perlvar{'lonHostID'};
1.476 bisitz 1925: push(@errors,
1926: &mt("The error occurred on host [_1]",
1927: "<tt>$host</tt>"));
1.454 albertel 1928:
1929: my $msg = join('<br />', @errors);
1930:
1.336 albertel 1931: #notify author
1.403 albertel 1932: &Apache::lonmsg::author_res_msg($env{'request.filename'},$msg);
1.336 albertel 1933: #notify course
1.372 albertel 1934: if ( $symb && $env{'request.course.id'} ) {
1.380 www 1935: my $cnum=$env{'course.'.$env{'request.course.id'}.'.num'};
1936: my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
1.440 albertel 1937: my (undef,%users)=&Apache::lonmsg::decide_receiver(undef,0,1,1,1);
1.372 albertel 1938: my $declutter=&Apache::lonnet::declutter($env{'request.filename'});
1.435 raeburn 1939: my $baseurl = &Apache::lonnet::clutter($declutter);
1.336 albertel 1940: my @userlist;
1941: foreach (keys %users) {
1942: my ($user,$domain) = split(/:/, $_);
1943: push(@userlist,"$user\@$domain");
1.380 www 1944: my $key=$declutter.'_'.$user.'_'.$domain;
1945: my %lastnotified=&Apache::lonnet::get('nohist_xmlerrornotifications',
1946: [$key],
1947: $cdom,$cnum);
1948: my $now=time;
1949: if ($now-$lastnotified{$key}>86400) {
1.434 raeburn 1950: my $title = &Apache::lonnet::gettitle($symb);
1951: my $sentmessage;
1.380 www 1952: &Apache::lonmsg::user_normal_msg($user,$domain,
1.435 raeburn 1953: "Error [$title]",$msg,'',$baseurl,'','',
1.434 raeburn 1954: \$sentmessage,$symb,$title,1);
1.380 www 1955: &Apache::lonnet::put('nohist_xmlerrornotifications',
1956: {$key => $now},
1957: $cdom,$cnum);
1958: }
1.336 albertel 1959: }
1.372 albertel 1960: if ($env{'request.role.adv'}) {
1.486 bisitz 1961: $errormsg=&mt("An error occurred while processing this resource. The course personnel ([_1]) and the author have been notified.",join(', ',@userlist));
1.336 albertel 1962: } else {
1.486 bisitz 1963: $errormsg=&mt("An error occurred while processing this resource. The instructor has been notified.");
1.336 albertel 1964: }
1965: }
1966: push(@Apache::lonxml::error_messages,"<b>$errormsg</b> <br />");
1.52 albertel 1967: }
1.22 albertel 1968: }
1.49 albertel 1969:
1.22 albertel 1970: sub warning {
1.295 albertel 1971: $warningcount++;
1.261 albertel 1972:
1.372 albertel 1973: if ($env{'form.grade_target'} ne 'tex') {
1.348 albertel 1974: if ( &show_error_warn_msg() ) {
1.309 albertel 1975: push(@Apache::lonxml::warning_messages,
1.484 bisitz 1976: $Apache::lonxml::warnings_error_header
1977: .'<div class="LC_warning">'
1978: .&mt('[_1]W[_2]ARNING','<b>','</b>')."<b>:</b> ".join('<br />',@_)
1979: ."</div>\n"
1.482 bisitz 1980: );
1.295 albertel 1981: $Apache::lonxml::warnings_error_header='';
1982: }
1983: }
1.309 albertel 1984: }
1985:
1986: sub info {
1.372 albertel 1987: if ($env{'form.grade_target'} ne 'tex'
1988: && $env{'request.state'} eq 'construct') {
1.309 albertel 1989: push(@Apache::lonxml::info_messages,join('<br />',@_)."<br />\n");
1990: }
1991: }
1992:
1993: sub message_location {
1994: return '__LONCAPA_INTERNAL_MESSAGE_LOCATION__';
1995: }
1996:
1997: sub add_messages {
1998: my ($msg)=@_;
1999: my $result=join(' ',
2000: @Apache::lonxml::info_messages,
2001: @Apache::lonxml::error_messages,
2002: @Apache::lonxml::warning_messages);
2003: undef(@Apache::lonxml::info_messages);
2004: undef(@Apache::lonxml::error_messages);
2005: undef(@Apache::lonxml::warning_messages);
2006: $$msg=~s/__LONCAPA_INTERNAL_MESSAGE_LOCATION__/$result/;
2007: $$msg=~s/__LONCAPA_INTERNAL_MESSAGE_LOCATION__//g;
1.83 albertel 2008: }
2009:
2010: sub get_param {
1.213 albertel 2011: my ($param,$parstack,$safeeval,$context,$case_insensitive) = @_;
2012: if ( ! $context ) { $context = -1; }
2013: my $args ='';
2014: if ( $#$parstack > (-2-$context) ) { $args=$$parstack[$context]; }
1.297 sakharuk 2015: if ( ! $Apache::lonxml::usestyle ) {
2016: $args=$Apache::lonxml::style_values.$args;
2017: }
1.213 albertel 2018: if ( ! $args ) { return undef; }
2019: if ( $case_insensitive ) {
1.417 albertel 2020: if ($args =~ s/(my (?:.*))(\$\Q$param\E[,\)])/$1.lc($2)/ei) {
1.213 albertel 2021: return &Apache::run::run("{$args;".'return $'.$param.'}',
2022: $safeeval); #'
2023: } else {
2024: return undef;
2025: }
2026: } else {
1.417 albertel 2027: if ( $args =~ /my .*\$\Q$param\E[,\)]/ ) {
1.213 albertel 2028: return &Apache::run::run("{$args;".'return $'.$param.'}',
2029: $safeeval); #'
2030: } else {
2031: return undef;
2032: }
2033: }
1.22 albertel 2034: }
2035:
1.132 albertel 2036: sub get_param_var {
1.213 albertel 2037: my ($param,$parstack,$safeeval,$context,$case_insensitive) = @_;
1.132 albertel 2038: if ( ! $context ) { $context = -1; }
2039: my $args ='';
2040: if ( $#$parstack > (-2-$context) ) { $args=$$parstack[$context]; }
1.297 sakharuk 2041: if ( ! $Apache::lonxml::usestyle ) {
2042: $args=$Apache::lonxml::style_values.$args;
2043: }
1.230 albertel 2044: &Apache::lonxml::debug("Args are $args param is $param");
1.213 albertel 2045: if ($case_insensitive) {
1.419 albertel 2046: if (! ($args=~s/(my (?:.*))(\$\Q$param\E[,\)])/$1.lc($2)/ei)) {
1.213 albertel 2047: return undef;
2048: }
1.419 albertel 2049: } elsif ( $args !~ /my .*\$\Q$param\E[,\)]/ ) { return undef; }
1.132 albertel 2050: my $value=&Apache::run::run("{$args;".'return $'.$param.'}',$safeeval); #'
1.230 albertel 2051: &Apache::lonxml::debug("first run is $value");
1.341 albertel 2052: if ($value =~ /^[\$\@\%][a-zA-Z_]\w*$/) {
1.230 albertel 2053: &Apache::lonxml::debug("doing second");
2054: my @result=&Apache::run::run("return $value",$safeeval,1);
2055: if (!defined($result[0])) {
2056: return $value
2057: } else {
2058: if (wantarray) { return @result; } else { return $result[0]; }
2059: }
1.132 albertel 2060: } else {
2061: return $value;
2062: }
2063: }
2064:
1.438 albertel 2065: sub register_insert_xml {
2066: my $parser = HTML::LCParser->new($Apache::lonnet::perlvar{'lonTabDir'}
2067: .'/insertlist.xml');
2068: my ($tagnum,$in_help)=(0,0);
1.442 albertel 2069: my @alltags;
1.438 albertel 2070: my $tag;
2071: while (my $token = $parser->get_token()) {
2072: if ($token->[0] eq 'S') {
2073: my $key;
1.525 raeburn 2074: if ($token->[1] eq 'tag') {
1.438 albertel 2075: $tag = $token->[2]{'name'};
1.525 raeburn 2076: if (defined($tag)) {
2077: $insertlist{$tagnum.'.tag'} = $tag;
2078: $insertlist{$tag.'.num'} = $tagnum;
2079: push(@alltags,$tag);
2080: }
1.438 albertel 2081: } elsif ($in_help && $token->[1] eq 'file') {
2082: $key = $tag.'.helpfile';
2083: } elsif ($in_help && $token->[1] eq 'description') {
2084: $key = $tag.'.helpdesc';
2085: } elsif ($token->[1] eq 'description' ||
2086: $token->[1] eq 'color' ||
2087: $token->[1] eq 'show' ) {
2088: $key = $tag.'.'.$token->[1];
2089: } elsif ($token->[1] eq 'insert_sub') {
2090: $key = $tag.'.function';
2091: } elsif ($token->[1] eq 'help') {
2092: $in_help=1;
2093: } elsif ($token->[1] eq 'allow') {
1.442 albertel 2094: $key = $tag.'.allow';
1.438 albertel 2095: }
2096: if (defined($key)) {
2097: $insertlist{$key} = $parser->get_text();
2098: $insertlist{$key} =~ s/(^\s*|\s*$ )//gx;
2099: }
2100: } elsif ($token->[0] eq 'E') {
2101: if ($token->[1] eq 'tag') {
2102: undef($tag);
2103: $tagnum++;
2104: } elsif ($token->[1] eq 'help') {
2105: undef($in_help);
2106: }
2107: }
2108: }
1.442 albertel 2109:
2110: # parse the allows and ignore tags set to <show>no</show>
2111: foreach my $tag (@alltags) {
1.519 raeburn 2112: next if (!exists($insertlist{$tag.'.allow'}));
2113: my $allow = $insertlist{$tag.'.allow'};
1.442 albertel 2114: foreach my $element (split(',',$allow)) {
2115: $element =~ s/(^\s*|\s*$ )//gx;
1.519 raeburn 2116: if (!exists($insertlist{$element.'.show'})
2117: || $insertlist{$element.'.show'} ne 'no') {
1.442 albertel 2118: push(@{ $insertlist{$tag.'.which'} },$element);
2119: }
2120: }
2121: }
1.438 albertel 2122: }
2123:
2124: sub register_insert {
2125: return ®ister_insert_xml(@_);
2126: # &dump_insertlist('2');
2127: }
2128:
2129: sub dump_insertlist {
2130: my ($ext) = @_;
2131: open(XML,">/tmp/insertlist.xml.$ext");
2132: print XML ("<insertlist>");
2133: my $i=0;
2134:
2135: while (exists($insertlist{"$i.tag"})) {
2136: my $tag = $insertlist{"$i.tag"};
2137: print XML ("
2138: \t<tag name=\"$tag\">");
2139: if (defined($insertlist{"$tag.description"})) {
2140: print XML ("
2141: \t\t<description>".$insertlist{"$tag.description"}."</description>");
2142: }
2143: if (defined($insertlist{"$tag.color"})) {
2144: print XML ("
2145: \t\t<color>".$insertlist{"$tag.color"}."</color>");
2146: }
2147: if (defined($insertlist{"$tag.function"})) {
2148: print XML ("
2149: \t\t<insert_sub>".$insertlist{"$tag.function"}."</insert_sub>");
2150: }
2151: if (defined($insertlist{"$tag.show"})
2152: && $insertlist{"$tag.show"} ne 'yes') {
2153: print XML ("
2154: \t\t<show>".$insertlist{"$tag.show"}."</show>");
2155: }
2156: if (defined($insertlist{"$tag.helpfile"})) {
2157: print XML ("
2158: \t\t<help>
2159: \t\t\t<file>".$insertlist{"$tag.helpfile"}."</file>");
2160: if ($insertlist{"$tag.helpdesc"} ne '') {
2161: print XML ("
2162: \t\t\t<description>".$insertlist{"$tag.helpdesc"}."</description>");
2163: }
2164: print XML ("
2165: \t\t</help>");
2166: }
2167: if (defined($insertlist{"$tag.which"})) {
2168: print XML ("
2169: \t\t<allow>".join(',',sort(@{ $insertlist{"$tag.which"} }))."</allow>");
2170: }
2171: print XML ("
2172: \t</tag>");
2173: $i++;
2174: }
2175: print XML ("\n</insertlist>\n");
2176: close(XML);
2177: }
2178:
1.98 albertel 2179: sub description {
1.437 albertel 2180: my ($token)=@_;
2181: my $tag = &get_tag($token);
2182: return $insertlist{$tag.'.description'};
1.268 bowersj2 2183: }
2184:
2185: # Returns a list containing the help file, and the description
2186: sub helpinfo {
1.437 albertel 2187: my ($token)=@_;
2188: my $tag = &get_tag($token);
2189: return ($insertlist{$tag.'.helpfile'}, $insertlist{$tag.'.helpdesc'});
2190: }
2191:
2192: sub get_tag {
2193: my ($token)=@_;
2194: my $tagnum;
2195: my $tag=$token->[1];
2196: foreach my $namespace (reverse(@Apache::lonxml::namespace)) {
2197: my $testtag = $namespace.'::'.$tag;
2198: $tagnum = $insertlist{"$testtag.num"};
2199: last if (defined($tagnum));
2200: }
2201: if (!defined($tagnum)) {
2202: $tagnum = $Apache::lonxml::insertlist{"$tag.num"};
2203: }
2204: return $insertlist{"$tagnum.tag"};
1.98 albertel 2205: }
1.123 albertel 2206:
1.485 onken 2207: ############################################################
2208: # PDF-FORM-METHODS
2209:
2210: =pod
2211:
1.508 onken 2212: =item &print_pdf_radiobutton(fieldname, value)
1.485 onken 2213:
1.508 onken 2214: Returns a latexline to generate a PDF-Form-Radiobutton.
2215: Note: Radiobuttons with equal names are automaticly grouped
2216: in a selection-group.
1.485 onken 2217:
1.508 onken 2218: $fieldname: PDF internalname of the radiobutton(group)
2219: $value: Value of radiobutton
1.485 onken 2220:
2221: =cut
2222: sub print_pdf_radiobutton {
1.508 onken 2223: my ($fieldname, $value) = @_;
2224: return '\radioButton[\symbolchoice{circle}]{'
2225: .$fieldname.'}{10bp}{10bp}{'.$value.'}';
1.485 onken 2226: }
2227:
2228:
2229: =pod
2230:
2231: =item &print_pdf_start_combobox(fieldname)
2232:
2233: Starts a latexline to generate a PDF-Form-Combobox with text.
2234:
2235: $fieldname: PDF internal name of the Combobox
2236:
2237: =cut
2238: sub print_pdf_start_combobox {
2239: my $result;
2240: my ($fieldName) = @_;
2241: $result .= '\begin{tabularx}{\textwidth}{p{2.5cm}X}'."\n";
2242: $result .= '\comboBox[]{'.$fieldName.'}{2.3cm}{14bp}{'; #
2243:
2244: return $result;
2245: }
2246:
2247:
2248: =pod
2249:
2250: =item &print_pdf_add_combobox_option(options)
2251:
2252: Generates a latexline to add Options to a PDF-Form-ComboBox.
2253:
2254: $option: PDF internal name of the Combobox-Option
2255:
2256: =cut
2257: sub print_pdf_add_combobox_option {
2258:
2259: my $result;
2260: my ($option) = @_;
2261:
2262: $result .= '('.$option.')';
2263:
2264: return $result;
2265: }
2266:
2267:
2268: =pod
2269:
2270: =item &print_pdf_end_combobox(text) {
2271:
2272: Returns latexcode to end a PDF-Form-Combobox with text.
2273:
2274: =cut
2275: sub print_pdf_end_combobox {
2276: my $result;
2277: my ($text) = @_;
2278:
2279: $result .= '}&'.$text."\\\\\n";
2280: $result .= '\end{tabularx}' . "\n";
2281: $result .= '\hspace{2mm}' . "\n";
2282: return $result;
2283: }
2284:
2285:
2286: =pod
2287:
2288: =item &print_pdf_hiddenField(fieldname, user, domain)
2289:
2290: Returns a latexline to generate a PDF-Form-hiddenField with userdata.
2291:
2292: $fieldname label for hiddentextfield
2293: $user: name of user
2294: $domain: domain of user
2295:
2296: =cut
2297: sub print_pdf_hiddenfield {
2298: my $result;
2299: my ($fieldname, $user, $domain) = @_;
2300:
2301: $result .= '\textField [\F{\FHidden}\F{-\FPrint}\V{'.$domain.'&'.$user.'}]{'.$fieldname.'}{0in}{0in}'."\n";
2302:
2303: return $result;
2304: }
2305:
1.1 sakharuk 2306: 1;
2307: __END__
1.68 www 2308:
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