Annotation of loncom/xml/lonxml.pm, revision 1.409
1.2 sakharuk 1: # The LearningOnline Network with CAPA
1.3 sakharuk 2: # XML Parser Module
1.2 sakharuk 3: #
1.409 ! albertel 4: # $Id: lonxml.pm,v 1.408 2006/04/18 20:50:45 albertel Exp $
1.139 www 5: #
6: # Copyright Michigan State University Board of Trustees
7: #
8: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
9: #
10: # LON-CAPA is free software; you can redistribute it and/or modify
11: # it under the terms of the GNU General Public License as published by
12: # the Free Software Foundation; either version 2 of the License, or
13: # (at your option) any later version.
14: #
15: # LON-CAPA is distributed in the hope that it will be useful,
16: # but WITHOUT ANY WARRANTY; without even the implied warranty of
17: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18: # GNU General Public License for more details.
19: #
20: # You should have received a copy of the GNU General Public License
21: # along with LON-CAPA; if not, write to the Free Software
22: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23: #
24: # /home/httpd/html/adm/gpl.txt
25: #
26: # http://www.lon-capa.org/
27: #
28: # Copyright for TtHfunc and TtMfunc by Ian Hutchinson.
29: # TtHfunc and TtMfunc (the "Code") may be compiled and linked into
30: # binary executable programs or libraries distributed by the
31: # Michigan State University (the "Licensee"), but any binaries so
32: # distributed are hereby licensed only for use in the context
33: # of a program or computational system for which the Licensee is the
34: # primary author or distributor, and which performs substantial
35: # additional tasks beyond the translation of (La)TeX into HTML.
36: # The C source of the Code may not be distributed by the Licensee
37: # to any other parties under any circumstances.
38: #
1.316 albertel 39:
1.2 sakharuk 40:
1.4 albertel 41: package Apache::lonxml;
1.33 www 42: use vars
1.320 www 43: qw(@pwd @outputstack $redirection $import @extlinks $metamode $evaluate %insertlist @namespace $errorcount $warningcount @htmlareafields);
1.1 sakharuk 44: use strict;
1.167 albertel 45: use HTML::LCParser();
1.161 albertel 46: use HTML::TreeBuilder();
47: use HTML::Entities();
48: use Safe();
49: use Safe::Hole();
50: use Math::Cephes();
51: use Math::Random();
52: use Opcode();
1.271 www 53: use POSIX qw(strftime);
1.339 albertel 54: use Time::HiRes qw( gettimeofday tv_interval );
1.393 albertel 55: use Symbol();
1.266 bowersj2 56:
1.72 albertel 57: sub register {
1.141 albertel 58: my ($space,@taglist) = @_;
59: foreach my $temptag (@taglist) {
60: push(@{ $Apache::lonxml::alltags{$temptag} },$space);
1.72 albertel 61: }
62: }
63:
1.141 albertel 64: sub deregister {
65: my ($space,@taglist) = @_;
66: foreach my $temptag (@taglist) {
67: my $tempspace = $Apache::lonxml::alltags{$temptag}[-1];
68: if ($tempspace eq $space) {
69: pop(@{ $Apache::lonxml::alltags{$temptag} });
70: }
71: }
1.142 albertel 72: #&printalltags();
1.141 albertel 73: }
74:
1.46 www 75: use Apache::Constants qw(:common);
1.161 albertel 76: use Apache::lontexconvert();
77: use Apache::style();
78: use Apache::run();
79: use Apache::londefdef();
80: use Apache::scripttag();
1.285 www 81: use Apache::languagetags();
1.161 albertel 82: use Apache::edit();
1.266 bowersj2 83: use Apache::inputtags();
84: use Apache::outputtags();
1.372 albertel 85: use Apache::lonnet;
1.161 albertel 86: use Apache::File();
87: use Apache::loncommon();
1.198 www 88: use Apache::lonfeedback();
1.200 www 89: use Apache::lonmsg();
1.217 matthew 90: use Apache::loncacc();
1.280 www 91: use Apache::lonlocal;
1.79 www 92:
1.72 albertel 93: #================================================== Main subroutine: xmlparse
94: #debugging control, to turn on debugging modify the correct handler
95: $Apache::lonxml::debug=0;
1.206 albertel 96:
97: # keeps count of the number of warnings and errors generated in a parse
98: $warningcount=0;
99: $errorcount=0;
1.72 albertel 100:
101: #path to the directory containing the file currently being processed
102: @pwd=();
103:
104: #these two are used for capturing a subset of the output for later processing,
105: #don't touch them directly use &startredirection and &endredirection
106: @outputstack = ();
107: $redirection = 0;
108:
109: #controls wheter the <import> tag actually does
110: $import = 1;
111: @extlinks=();
112:
113: # meta mode is a bit weird only some output is to be turned off
114: #<output> tag turns metamode off (defined in londefdef.pm)
115: $metamode = 0;
116:
117: # turns on and of run::evaluate actually derefencing var refs
118: $evaluate = 1;
1.7 albertel 119:
1.74 albertel 120: # data structure for eidt mode, determines what tags can go into what other tags
121: %insertlist=();
1.68 www 122:
1.99 albertel 123: # stores the list of active tag namespaces
1.76 albertel 124: @namespace=();
125:
1.99 albertel 126: # has the dynamic menu been updated to know about this resource
127: $Apache::lonxml::registered=0;
128:
1.172 albertel 129: # a pointer the the Apache request object
130: $Apache::lonxml::request='';
131:
1.216 sakharuk 132: # a problem number counter, and check on ether it is used
1.237 sakharuk 133: $Apache::lonxml::counter=1;
1.204 albertel 134: $Apache::lonxml::counter_changed=0;
135:
1.212 albertel 136: #internal check on whether to look at style defs
137: $Apache::lonxml::usestyle=1;
1.260 albertel 138:
139: #locations used to store the parameter string for style substitutions
140: $Apache::lonxml::style_values='';
141: $Apache::lonxml::style_end_values='';
1.212 albertel 142:
1.281 albertel 143: #array of ssi calls that need to occur after we are done parsing
144: @Apache::lonxml::ssi_info=();
145:
1.282 albertel 146: #should we do the postag variable interpolation
147: $Apache::lonxml::post_evaluate=1;
148:
1.295 albertel 149: #a header message to emit in the case of any generated warning or errors
150: $Apache::lonxml::warnings_error_header='';
151:
1.396 foxr 152: # Control whether or not LaTeX symbols should be substituted for their
153: # \ style equivalents...this may be turned off e.g. in an verbatim
154: # environment.
155:
156: $Apache::lonxml::substitute_LaTeX_symbols = 1; # Starts out on.
157:
158: sub enable_LaTeX_substitutions {
159: $Apache::lonxml::substitute_LaTeX_symbols = 1;
160: }
161: sub disable_LaTeX_substitutions {
162: $Apache::lonxml::substitute_LaTeX_symbols = 0;
163: }
164:
1.68 www 165: sub xmlend {
1.335 sakharuk 166: my ($target,$parser)=@_;
1.278 www 167: my $mode='xml';
168: my $status='OPEN';
1.368 albertel 169: if ($Apache::lonhomework::parsing_a_problem ||
170: $Apache::lonhomework::parsing_a_task ) {
1.278 www 171: $mode='problem';
172: $status=$Apache::inputtags::status[-1];
173: }
1.362 matthew 174: my $discussion;
1.379 albertel 175: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
176: ['LONCAPA_INTERNAL_no_discussion']);
1.372 albertel 177: if (! exists($env{'form.LONCAPA_INTERNAL_no_discussion'}) ||
178: $env{'form.LONCAPA_INTERNAL_no_discussion'} ne 'true') {
1.362 matthew 179: $discussion=&Apache::lonfeedback::list_discussion($mode,$status);
180: }
1.334 sakharuk 181: if ($target eq 'tex') {
1.335 sakharuk 182: $discussion.='<tex>\keephidden{ENDOFPROBLEM}\vskip 0.5mm\noindent\makebox[\textwidth/$number_of_columns][b]{\hrulefill}\end{document}</tex>';
1.334 sakharuk 183: &Apache::lonxml::newparser($parser,\$discussion,'');
184: return '';
185: }
1.405 albertel 186:
1.407 albertel 187: return $discussion;
1.119 www 188: }
189:
190: sub tokeninputfield {
1.120 www 191: my $defhost=$Apache::lonnet::perlvar{'lonHostID'};
192: $defhost=~tr/a-z/A-Z/;
1.119 www 193: return (<<ENDINPUTFIELD)
1.226 albertel 194: <script type="text/javascript">
1.120 www 195: function updatetoken() {
196: var comp=new Array;
197: var barcode=unescape(document.tokeninput.barcode.value);
198: comp=barcode.split('*');
199: if (typeof(comp[0])!="undefined") {
200: document.tokeninput.codeone.value=comp[0];
201: }
202: if (typeof(comp[1])!="undefined") {
203: document.tokeninput.codetwo.value=comp[1];
204: }
205: if (typeof(comp[2])!="undefined") {
206: comp[2]=comp[2].toUpperCase();
207: document.tokeninput.codethree.value=comp[2];
208: }
209: document.tokeninput.barcode.value='';
210: }
211: </script>
212: <form method="post" name="tokeninput">
1.119 www 213: <table border="2" bgcolor="#FFFFBB">
214: <tr><th>DocID Checkin</th></tr>
215: <tr><td>
216: <table>
217: <tr>
218: <td>Scan in Barcode</td>
1.120 www 219: <td><input type="text" size="22" name="barcode"
220: onChange="updatetoken()"/></td>
1.119 www 221: </tr>
222: <tr><td><i>or</i> Type in DocID</td>
223: <td>
224: <input type="text" size="5" name="codeone" />
1.120 www 225: <b><font size="+2">*</font></b>
1.119 www 226: <input type="text" size="5" name="codetwo" />
1.120 www 227: <b><font size="+2">*</font></b>
228: <input type="text" size="10" name="codethree" value="$defhost"
229: onChange="this.value=this.value.toUpperCase()" />
1.119 www 230: </td></tr>
231: </table>
232: </td></tr>
233: <tr><td><input type="submit" value="Check in DocID" /></td></tr>
234: </table>
235: </form>
236: ENDINPUTFIELD
1.112 www 237: }
238:
1.116 www 239: sub maketoken {
1.118 www 240: my ($symb,$tuname,$tudom,$tcrsid)=@_;
1.112 www 241: unless ($symb) {
242: $symb=&Apache::lonnet::symbread();
243: }
244: unless ($tuname) {
1.372 albertel 245: $tuname=$env{'user.name'};
246: $tudom=$env{'user.domain'};
247: $tcrsid=$env{'request.course.id'};
1.112 www 248: }
1.116 www 249:
1.118 www 250: return &Apache::lonnet::checkout($symb,$tuname,$tudom,$tcrsid);
251: }
252:
253: sub printtokenheader {
1.133 albertel 254: my ($target,$token,$tsymb,$tcrsid,$tudom,$tuname)=@_;
1.116 www 255: unless ($token) { return ''; }
1.118 www 256:
1.133 albertel 257: my ($symb,$courseid,$domain,$name) = &Apache::lonxml::whichuser();
258: unless ($tsymb) {
259: $tsymb=$symb;
1.118 www 260: }
261: unless ($tuname) {
1.133 albertel 262: $tuname=$name;
263: $tudom=$domain;
264: $tcrsid=$courseid;
1.118 www 265: }
1.114 www 266:
1.390 albertel 267: my $plainname=&Apache::loncommon::plainname($tuname,$tudom);
1.114 www 268:
1.112 www 269: if ($target eq 'web') {
1.145 www 270: my %idhash=&Apache::lonnet::idrget($tudom,($tuname));
1.115 www 271: return
1.221 albertel 272: '<img align="right" src="/cgi-bin/barcode.png?encode='.$token.'" />'.
1.284 www 273: &mt('Checked out for').' '.$plainname.
274: '<br />'.&mt('User').': '.$tuname.' at '.$tudom.
275: '<br />'.&mt('ID').': '.$idhash{$tuname}.
276: '<br />'.&mt('CourseID').': '.$tcrsid.
1.372 albertel 277: '<br />'.&mt('Course').': '.$env{'course.'.$tcrsid.'.description'}.
1.284 www 278: '<br />'.&mt('DocID').': '.$token.
279: '<br />'.&mt('Time').': '.&Apache::lonlocal::locallocaltime().'<hr />';
1.112 www 280: } else {
1.121 albertel 281: return $token;
1.112 www 282: }
1.68 www 283: }
284:
1.48 albertel 285: sub printalltags {
286: my $temp;
287: foreach $temp (sort keys %Apache::lonxml::alltags) {
1.141 albertel 288: &Apache::lonxml::debug("$temp -- ".
289: join(',',@{ $Apache::lonxml::alltags{$temp} }));
1.48 albertel 290: }
291: }
1.31 sakharuk 292:
1.3 sakharuk 293: sub xmlparse {
1.172 albertel 294: my ($request,$target,$content_file_string,$safeinit,%style_for_target) = @_;
1.96 albertel 295:
1.172 albertel 296: &setup_globals($request,$target);
1.232 albertel 297: &Apache::inputtags::initialize_inputtags();
1.370 albertel 298: &Apache::bridgetask::initialize_bridgetask();
1.232 albertel 299: &Apache::outputtags::initialize_outputtags();
300: &Apache::edit::initialize_edit();
1.287 albertel 301: &Apache::londefdef::initialize_londefdef();
1.244 albertel 302:
1.178 www 303: #
304: # do we have a course style file?
305: #
306:
1.372 albertel 307: if ($env{'request.course.id'} && $env{'request.state'} ne 'construct') {
1.178 www 308: my $bodytext=
1.372 albertel 309: $env{'course.'.$env{'request.course.id'}.'.default_xml_style'};
1.178 www 310: if ($bodytext) {
1.337 albertel 311: foreach my $file (split(',',$bodytext)) {
312: my $location=&Apache::lonnet::filelocation('',$file);
313: my $styletext=&Apache::lonnet::getfile($location);
314: if ($styletext ne '-1') {
315: %style_for_target = (%style_for_target,
316: &Apache::style::styleparser($target,$styletext));
317: }
318: }
319: }
1.372 albertel 320: } elsif ($env{'construct.style'} && ($env{'request.state'} eq 'construct')) {
321: my $location=&Apache::lonnet::filelocation('',$env{'construct.style'});
1.291 sakharuk 322: my $styletext=&Apache::lonnet::getfile($location);
323: if ($styletext ne '-1') {
324: %style_for_target = (%style_for_target,
325: &Apache::style::styleparser($target,$styletext));
326: }
1.178 www 327: }
1.255 sakharuk 328: #&printalltags();
1.16 albertel 329: my @pars = ();
1.372 albertel 330: my $pwd=$env{'request.filename'};
1.23 albertel 331: $pwd =~ s:/[^/]*$::;
332: &newparser(\@pars,\$content_file_string,$pwd);
1.24 sakharuk 333:
1.3 sakharuk 334: my $safeeval = new Safe;
1.40 albertel 335: my $safehole = new Safe::Hole;
1.82 ng 336: &init_safespace($target,$safeeval,$safehole,$safeinit);
1.3 sakharuk 337: #-------------------- Redefinition of the target in the case of compound target
338:
339: ($target, my @tenta) = split('&&',$target);
340:
1.150 albertel 341: my @stack = ();
1.3 sakharuk 342: my @parstack = ();
1.358 albertel 343: &initdepth();
344: &init_alarm();
1.101 albertel 345: my $finaloutput = &inner_xmlparse($target,\@stack,\@parstack,\@pars,
1.394 albertel 346: $safeeval,\%style_for_target,1);
1.255 sakharuk 347:
1.372 albertel 348: if ($env{'request.uri'}) {
349: &writeallows($env{'request.uri'});
1.125 www 350: }
1.281 albertel 351: &do_registered_ssi();
1.204 albertel 352: if ($Apache::lonxml::counter_changed) { &store_counter() }
1.393 albertel 353:
354: &clean_safespace($safeeval);
355:
1.372 albertel 356: if ($env{'form.return_only_error_and_warning_counts'}) {
1.361 www 357: return "$errorcount:$warningcount";
358: }
1.3 sakharuk 359: return $finaloutput;
1.106 www 360: }
361:
1.191 albertel 362: sub latex_special_symbols {
1.272 albertel 363: my ($string,$where)=@_;
1.396 foxr 364: #
365: # If e.g. in verbatim mode, then don't substitute.
366: # but return original string.
367: #
368: if (!($Apache::lonxml::substitute_LaTeX_symbols)) {
369: return $string;
370: }
1.235 sakharuk 371: if ($where eq 'header') {
1.272 albertel 372: $string =~ s/(\\|_|\^)/ /g;
1.311 albertel 373: $string =~ s/(\$|%|\{|\})/\\$1/g;
1.273 sakharuk 374: $string =~ s/_/ /g;
1.311 albertel 375: $string=&Apache::lonprintout::character_chart($string);
376: # any & or # leftover should be safe to just escape
377: $string=~s/([^\\])\&/$1\\\&/g;
378: $string=~s/([^\\])\#/$1\\\#/g;
1.229 sakharuk 379: } else {
1.312 albertel 380: $string=~s/\\/\\ensuremath{\\backslash}/g;
1.367 albertel 381: $string=~s/\\\%|\%/\\\%/g;
382: $string=~s/\\{|{/\\{/g;
383: $string=~s/\\}|}/\\}/g;
1.378 albertel 384: $string=~s/\\ensuremath\\{\\backslash\\}/\\ensuremath{\\backslash}/g;
1.367 albertel 385: $string=~s/\\\$|\$/\\\$/g;
386: $string=~s/\\\_|\_/\\\_/g;
1.313 albertel 387: $string=~s/([^\\]|^)(\~|\^)/$1\\$2\\strut /g;
1.310 sakharuk 388: $string=~s/(>|<)/\\ensuremath\{$1\}/g; #more or less
1.311 albertel 389: $string=&Apache::lonprintout::character_chart($string);
390: # any & or # leftover should be safe to just escape
1.367 albertel 391: $string=~s/\\\&|\&/\\\&/g;
392: $string=~s/\\\#|\#/\\\#/g;
1.332 sakharuk 393: $string=~s/\|/\$\\mid\$/g;
1.310 sakharuk 394: #single { or } How to escape?
1.229 sakharuk 395: }
1.272 albertel 396: return $string;
1.188 sakharuk 397: }
398:
1.101 albertel 399: sub inner_xmlparse {
1.394 albertel 400: my ($target,$stack,$parstack,$pars,$safeeval,$style_for_target,$start)=@_;
1.101 albertel 401: my $finaloutput = '';
402: my $result;
403: my $token;
1.258 albertel 404: my $dontpop=0;
1.389 albertel 405: my $startredirection = $Apache::lonxml::redirection;
1.101 albertel 406: while ( $#$pars > -1 ) {
407: while ($token = $$pars['-1']->get_token) {
1.261 albertel 408: if (($token->[0] eq 'T') || ($token->[0] eq 'C') ) {
1.101 albertel 409: if ($metamode<1) {
1.190 albertel 410: my $text=$token->[1];
1.193 albertel 411: if ($token->[0] eq 'C' && $target eq 'tex') {
1.239 sakharuk 412: $text = '';
413: # $text = '%'.$text."\n";
1.182 sakharuk 414: }
1.190 albertel 415: $result.=$text;
1.101 albertel 416: }
1.261 albertel 417: } elsif (($token->[0] eq 'D')) {
418: if ($metamode<1 && $target eq 'web') {
419: my $text=$token->[1];
420: $result.=$text;
421: }
1.101 albertel 422: } elsif ($token->[0] eq 'PI') {
1.261 albertel 423: if ($metamode<1 && $target eq 'web') {
1.101 albertel 424: $result=$token->[2];
425: }
426: } elsif ($token->[0] eq 'S') {
1.140 albertel 427: # add tag to stack
1.101 albertel 428: push (@$stack,$token->[1]);
429: # add parameters list to another stack
430: push (@$parstack,&parstring($token));
1.140 albertel 431: &increasedepth($token);
1.212 albertel 432: if ($Apache::lonxml::usestyle &&
433: exists($$style_for_target{$token->[1]})) {
434: $Apache::lonxml::usestyle=0;
435: my $string=$$style_for_target{$token->[1]}.
436: '<LONCAPA_INTERNAL_TURN_STYLE_ON />';
437: &Apache::lonxml::newparser($pars,\$string);
1.257 albertel 438: $Apache::lonxml::style_values=$$parstack[-1];
1.259 albertel 439: $Apache::lonxml::style_end_values=$$parstack[-1];
1.101 albertel 440: } else {
441: $result = &callsub("start_$token->[1]", $target, $token, $stack,
442: $parstack, $pars, $safeeval, $style_for_target);
1.140 albertel 443: }
1.101 albertel 444: } elsif ($token->[0] eq 'E') {
1.212 albertel 445: if ($Apache::lonxml::usestyle &&
446: exists($$style_for_target{'/'."$token->[1]"})) {
447: $Apache::lonxml::usestyle=0;
448: my $string=$$style_for_target{'/'.$token->[1]}.
1.258 albertel 449: '<LONCAPA_INTERNAL_TURN_STYLE_ON end="'.$token->[1].'" />';
1.212 albertel 450: &Apache::lonxml::newparser($pars,\$string);
1.259 albertel 451: $Apache::lonxml::style_values=$Apache::lonxml::style_end_values;
452: $Apache::lonxml::style_end_values='';
1.258 albertel 453: $dontpop=1;
1.101 albertel 454: } else {
1.258 albertel 455: #clear out any tags that didn't end
456: while ($token->[1] ne $$stack['-1'] && ($#$stack > -1)) {
457: my $lasttag=$$stack[-1];
1.317 albertel 458: if ($token->[1] =~ /^\Q$lasttag\E$/i) {
1.258 albertel 459: &Apache::lonxml::warning('Using tag </'.$token->[1].'> on line '.$token->[3].' as end tag to <'.$$stack[-1].'>');
460: last;
461: } else {
462: &Apache::lonxml::warning('Found tag </'.$token->[1].'> on line '.$token->[3].' when looking for </'.$$stack[-1].'> in file');
463: &end_tag($stack,$parstack,$token);
464: }
465: }
466: $result = &callsub("end_$token->[1]", $target, $token, $stack,
467: $parstack, $pars,$safeeval, $style_for_target);
1.101 albertel 468: }
469: } else {
470: &Apache::lonxml::error("Unknown token event :$token->[0]:$token->[1]:");
471: }
472: #evaluate variable refs in result
1.282 albertel 473: if ($Apache::lonxml::post_evaluate &&$result ne "") {
1.257 albertel 474: my $extras;
475: if (!$Apache::lonxml::usestyle) {
476: $extras=$Apache::lonxml::style_values;
477: }
1.101 albertel 478: if ( $#$parstack > -1 ) {
1.257 albertel 479: $result=&Apache::run::evaluate($result,$safeeval,$extras.$$parstack[-1]);
1.101 albertel 480: } else {
1.257 albertel 481: $result= &Apache::run::evaluate($result,$safeeval,$extras);
1.101 albertel 482: }
1.163 albertel 483: }
1.282 albertel 484: $Apache::lonxml::post_evaluate=1;
485:
1.190 albertel 486: if (($token->[0] eq 'T') || ($token->[0] eq 'C') || ($token->[0] eq 'D') ) {
1.249 albertel 487: #Style file definitions should be correct
1.250 albertel 488: if ($target eq 'tex' && ($Apache::lonxml::usestyle)) {
1.311 albertel 489: $result=&latex_special_symbols($result);
1.249 albertel 490: }
1.190 albertel 491: }
492:
1.169 albertel 493: if ($Apache::lonxml::redirection) {
494: $Apache::lonxml::outputstack['-1'] .= $result;
495: } else {
496: $finaloutput.=$result;
497: }
498: $result = '';
499:
1.258 albertel 500: if ($token->[0] eq 'E' && !$dontpop) {
1.101 albertel 501: &end_tag($stack,$parstack,$token);
502: }
1.258 albertel 503: $dontpop=0;
1.224 albertel 504: }
1.212 albertel 505: if ($#$pars > -1) {
506: pop @$pars;
507: pop @Apache::lonxml::pwd;
508: }
1.101 albertel 509: }
510:
511: # if ($target eq 'meta') {
512: # $finaloutput.=&endredirection;
513: # }
514:
1.394 albertel 515: if ( $start && $target eq 'grade') { &endredirection(); }
1.389 albertel 516: if ( $Apache::lonxml::redirection > $startredirection) {
517: while ($Apache::lonxml::redirection > $startredirection) {
518: $finaloutput .= &endredirection();
1.387 albertel 519: }
520: }
1.101 albertel 521: if (($ENV{'QUERY_STRING'}) && ($target eq 'web')) {
522: $finaloutput=&afterburn($finaloutput);
1.216 sakharuk 523: }
1.101 albertel 524: return $finaloutput;
525: }
1.67 www 526:
1.318 matthew 527: ##
528: ## Looks to see if there is a subroutine defined for this tag. If so, call it,
529: ## otherwise do not call it as we do not know what it is.
530: ##
1.7 albertel 531: sub callsub {
1.84 albertel 532: my ($sub,$target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.7 albertel 533: my $currentstring='';
1.72 albertel 534: my $nodefault;
1.7 albertel 535: {
1.59 albertel 536: my $sub1;
1.7 albertel 537: no strict 'refs';
1.68 www 538: my $tag=$token->[1];
1.236 www 539: # get utterly rid of extended html tags
540: if ($tag=~/^x\-/i) { return ''; }
1.141 albertel 541: my $space=$Apache::lonxml::alltags{$tag}[-1];
1.68 www 542: if (!$space) {
1.141 albertel 543: $tag=~tr/A-Z/a-z/;
1.68 www 544: $sub=~tr/A-Z/a-z/;
1.141 albertel 545: $space=$Apache::lonxml::alltags{$tag}[-1]
1.68 www 546: }
1.97 albertel 547:
548: my $deleted=0;
549: $Apache::lonxml::curdepth=join('_',@Apache::lonxml::depthcounter);
550: if (($token->[0] eq 'S') && ($target eq 'modified')) {
551: $deleted=&Apache::edit::handle_delete($space,$target,$token,$tagstack,
552: $parstack,$parser,$safeeval,
553: $style);
554: }
555: if (!$deleted) {
556: if ($space) {
1.220 albertel 557: #&Apache::lonxml::debug("Calling sub $sub in $space $metamode");
1.97 albertel 558: $sub1="$space\:\:$sub";
559: ($currentstring,$nodefault) = &$sub1($target,$token,$tagstack,
560: $parstack,$parser,$safeeval,
561: $style);
562: } else {
1.318 matthew 563: if ($target eq 'tex') {
564: # throw away tag name
565: return '';
566: }
1.220 albertel 567: #&Apache::lonxml::debug("NOT Calling sub $sub in $space $metamode");
1.97 albertel 568: if ($metamode <1) {
569: if (defined($token->[4]) && ($metamode < 1)) {
570: $currentstring = $token->[4];
571: } else {
572: $currentstring = $token->[2];
573: }
1.62 sakharuk 574: }
1.7 albertel 575: }
1.97 albertel 576: # &Apache::lonxml::debug("nodefalt:$nodefault:");
577: if ($currentstring eq '' && $nodefault eq '') {
578: if ($target eq 'edit') {
1.220 albertel 579: #&Apache::lonxml::debug("doing default edit for $token->[1]");
1.97 albertel 580: if ($token->[0] eq 'S') {
581: $currentstring = &Apache::edit::tag_start($target,$token);
582: } elsif ($token->[0] eq 'E') {
583: $currentstring = &Apache::edit::tag_end($target,$token);
584: }
585: } elsif ($target eq 'modified') {
586: if ($token->[0] eq 'S') {
587: $currentstring = $token->[4];
588: $currentstring.=&Apache::edit::handle_insert();
1.210 www 589: } elsif ($token->[0] eq 'E') {
590: $currentstring = $token->[2];
591: $currentstring.=&Apache::edit::handle_insertafter($token->[1]);
1.97 albertel 592: } else {
593: $currentstring = $token->[2];
594: }
1.72 albertel 595: }
596: }
1.7 albertel 597: }
598: use strict 'refs';
599: }
600: return $currentstring;
1.82 ng 601: }
602:
1.96 albertel 603: sub setup_globals {
1.172 albertel 604: my ($request,$target)=@_;
605: $Apache::lonxml::request=$request;
1.99 albertel 606: $Apache::lonxml::registered = 0;
1.325 www 607: @Apache::lonxml::htmlareafields=();
1.205 www 608: $errorcount=0;
609: $warningcount=0;
1.207 albertel 610: $Apache::lonxml::default_homework_loaded=0;
1.212 albertel 611: $Apache::lonxml::usestyle=1;
1.204 albertel 612: &init_counter();
1.101 albertel 613: @Apache::lonxml::pwd=();
1.124 albertel 614: @Apache::lonxml::extlinks=();
1.281 albertel 615: @Apache::lonxml::ssi_info=();
1.282 albertel 616: $Apache::lonxml::post_evaluate=1;
1.295 albertel 617: $Apache::lonxml::warnings_error_header='';
1.397 albertel 618: $Apache::lonxml::substitute_LaTeX_symbols = 1;
1.96 albertel 619: if ($target eq 'meta') {
620: $Apache::lonxml::redirection = 0;
621: $Apache::lonxml::metamode = 1;
622: $Apache::lonxml::evaluate = 1;
623: $Apache::lonxml::import = 0;
1.129 albertel 624: } elsif ($target eq 'answer') {
625: $Apache::lonxml::redirection = 0;
626: $Apache::lonxml::metamode = 1;
627: $Apache::lonxml::evaluate = 1;
628: $Apache::lonxml::import = 1;
1.96 albertel 629: } elsif ($target eq 'grade') {
1.387 albertel 630: &startredirection(); #ended in inner_xmlparse on exit
1.96 albertel 631: $Apache::lonxml::metamode = 0;
632: $Apache::lonxml::evaluate = 1;
633: $Apache::lonxml::import = 1;
634: } elsif ($target eq 'modified') {
635: $Apache::lonxml::redirection = 0;
636: $Apache::lonxml::metamode = 0;
637: $Apache::lonxml::evaluate = 0;
638: $Apache::lonxml::import = 0;
639: } elsif ($target eq 'edit') {
640: $Apache::lonxml::redirection = 0;
641: $Apache::lonxml::metamode = 0;
642: $Apache::lonxml::evaluate = 0;
643: $Apache::lonxml::import = 0;
1.163 albertel 644: } elsif ($target eq 'analyze') {
645: $Apache::lonxml::redirection = 0;
646: $Apache::lonxml::metamode = 0;
647: $Apache::lonxml::evaluate = 1;
648: $Apache::lonxml::import = 1;
1.96 albertel 649: } else {
650: $Apache::lonxml::redirection = 0;
651: $Apache::lonxml::metamode = 0;
652: $Apache::lonxml::evaluate = 1;
653: $Apache::lonxml::import = 1;
654: }
655: }
656:
1.82 ng 657: sub init_safespace {
658: my ($target,$safeeval,$safehole,$safeinit) = @_;
1.393 albertel 659: $safeeval->deny_only(':dangerous');
660: $safeeval->reval('use Math::Complex;');
1.383 albertel 661: $safeeval->permit_only(":default");
1.82 ng 662: $safeeval->permit("entereval");
663: $safeeval->permit(":base_math");
664: $safeeval->permit("sort");
1.286 albertel 665: $safeeval->permit("time");
1.371 albertel 666: $safeeval->deny("rand");
667: $safeeval->deny("srand");
1.82 ng 668: $safeeval->deny(":base_io");
1.102 albertel 669: $safehole->wrap(\&Apache::scripttag::xmlparse,$safeeval,'&xmlparse');
1.251 albertel 670: $safehole->wrap(\&Apache::outputtags::multipart,$safeeval,'&multipart');
1.82 ng 671: $safehole->wrap(\&Apache::lonnet::EXT,$safeeval,'&EXT');
1.324 albertel 672: $safehole->wrap(\&Apache::chemresponse::chem_standard_order,$safeeval,
673: '&chem_standard_order');
1.369 albertel 674: $safehole->wrap(\&Apache::response::check_status,$safeeval,'&check_status');
1.324 albertel 675:
1.82 ng 676: $safehole->wrap(\&Math::Cephes::asin,$safeeval,'&asin');
677: $safehole->wrap(\&Math::Cephes::acos,$safeeval,'&acos');
678: $safehole->wrap(\&Math::Cephes::atan,$safeeval,'&atan');
679: $safehole->wrap(\&Math::Cephes::sinh,$safeeval,'&sinh');
680: $safehole->wrap(\&Math::Cephes::cosh,$safeeval,'&cosh');
681: $safehole->wrap(\&Math::Cephes::tanh,$safeeval,'&tanh');
682: $safehole->wrap(\&Math::Cephes::asinh,$safeeval,'&asinh');
683: $safehole->wrap(\&Math::Cephes::acosh,$safeeval,'&acosh');
684: $safehole->wrap(\&Math::Cephes::atanh,$safeeval,'&atanh');
685: $safehole->wrap(\&Math::Cephes::erf,$safeeval,'&erf');
686: $safehole->wrap(\&Math::Cephes::erfc,$safeeval,'&erfc');
687: $safehole->wrap(\&Math::Cephes::j0,$safeeval,'&j0');
688: $safehole->wrap(\&Math::Cephes::j1,$safeeval,'&j1');
689: $safehole->wrap(\&Math::Cephes::jn,$safeeval,'&jn');
690: $safehole->wrap(\&Math::Cephes::jv,$safeeval,'&jv');
691: $safehole->wrap(\&Math::Cephes::y0,$safeeval,'&y0');
692: $safehole->wrap(\&Math::Cephes::y1,$safeeval,'&y1');
693: $safehole->wrap(\&Math::Cephes::yn,$safeeval,'&yn');
694: $safehole->wrap(\&Math::Cephes::yv,$safeeval,'&yv');
1.215 albertel 695:
696: $safehole->wrap(\&Math::Cephes::bdtr ,$safeeval,'&bdtr' );
697: $safehole->wrap(\&Math::Cephes::bdtrc ,$safeeval,'&bdtrc' );
698: $safehole->wrap(\&Math::Cephes::bdtri ,$safeeval,'&bdtri' );
699: $safehole->wrap(\&Math::Cephes::btdtr ,$safeeval,'&btdtr' );
700: $safehole->wrap(\&Math::Cephes::chdtr ,$safeeval,'&chdtr' );
701: $safehole->wrap(\&Math::Cephes::chdtrc,$safeeval,'&chdtrc');
702: $safehole->wrap(\&Math::Cephes::chdtri,$safeeval,'&chdtri');
703: $safehole->wrap(\&Math::Cephes::fdtr ,$safeeval,'&fdtr' );
704: $safehole->wrap(\&Math::Cephes::fdtrc ,$safeeval,'&fdtrc' );
705: $safehole->wrap(\&Math::Cephes::fdtri ,$safeeval,'&fdtri' );
706: $safehole->wrap(\&Math::Cephes::gdtr ,$safeeval,'&gdtr' );
707: $safehole->wrap(\&Math::Cephes::gdtrc ,$safeeval,'&gdtrc' );
708: $safehole->wrap(\&Math::Cephes::nbdtr ,$safeeval,'&nbdtr' );
709: $safehole->wrap(\&Math::Cephes::nbdtrc,$safeeval,'&nbdtrc');
710: $safehole->wrap(\&Math::Cephes::nbdtri,$safeeval,'&nbdtri');
711: $safehole->wrap(\&Math::Cephes::ndtr ,$safeeval,'&ndtr' );
712: $safehole->wrap(\&Math::Cephes::ndtri ,$safeeval,'&ndtri' );
713: $safehole->wrap(\&Math::Cephes::pdtr ,$safeeval,'&pdtr' );
714: $safehole->wrap(\&Math::Cephes::pdtrc ,$safeeval,'&pdtrc' );
715: $safehole->wrap(\&Math::Cephes::pdtri ,$safeeval,'&pdtri' );
716: $safehole->wrap(\&Math::Cephes::stdtr ,$safeeval,'&stdtr' );
717: $safehole->wrap(\&Math::Cephes::stdtri,$safeeval,'&stdtri');
718:
1.383 albertel 719: $safehole->wrap(\&Math::Cephes::Matrix::mat,$safeeval,'&mat');
720: $safehole->wrap(\&Math::Cephes::Matrix::new,$safeeval,
721: '&Math::Cephes::Matrix::new');
722: $safehole->wrap(\&Math::Cephes::Matrix::coef,$safeeval,
723: '&Math::Cephes::Matrix::coef');
724: $safehole->wrap(\&Math::Cephes::Matrix::clr,$safeeval,
725: '&Math::Cephes::Matrix::clr');
726: $safehole->wrap(\&Math::Cephes::Matrix::add,$safeeval,
727: '&Math::Cephes::Matrix::add');
728: $safehole->wrap(\&Math::Cephes::Matrix::sub,$safeeval,
729: '&Math::Cephes::Matrix::sub');
730: $safehole->wrap(\&Math::Cephes::Matrix::mul,$safeeval,
731: '&Math::Cephes::Matrix::mul');
732: $safehole->wrap(\&Math::Cephes::Matrix::div,$safeeval,
733: '&Math::Cephes::Matrix::div');
734: $safehole->wrap(\&Math::Cephes::Matrix::inv,$safeeval,
735: '&Math::Cephes::Matrix::inv');
736: $safehole->wrap(\&Math::Cephes::Matrix::transp,$safeeval,
737: '&Math::Cephes::Matrix::transp');
738: $safehole->wrap(\&Math::Cephes::Matrix::simq,$safeeval,
739: '&Math::Cephes::Matrix::simq');
740: $safehole->wrap(\&Math::Cephes::Matrix::mat_to_vec,$safeeval,
741: '&Math::Cephes::Matrix::mat_to_vec');
742: $safehole->wrap(\&Math::Cephes::Matrix::vec_to_mat,$safeeval,
743: '&Math::Cephes::Matrix::vec_to_mat');
744: $safehole->wrap(\&Math::Cephes::Matrix::check,$safeeval,
745: '&Math::Cephes::Matrix::check');
746: $safehole->wrap(\&Math::Cephes::Matrix::check,$safeeval,
747: '&Math::Cephes::Matrix::check');
748:
1.215 albertel 749: # $safehole->wrap(\&Math::Cephes::new_fract,$safeeval,'&new_fract');
750: # $safehole->wrap(\&Math::Cephes::radd,$safeeval,'&radd');
751: # $safehole->wrap(\&Math::Cephes::rsub,$safeeval,'&rsub');
752: # $safehole->wrap(\&Math::Cephes::rmul,$safeeval,'&rmul');
753: # $safehole->wrap(\&Math::Cephes::rdiv,$safeeval,'&rdiv');
754: # $safehole->wrap(\&Math::Cephes::euclid,$safeeval,'&euclid');
755:
1.91 ng 756: $safehole->wrap(\&Math::Random::random_beta,$safeeval,'&math_random_beta');
757: $safehole->wrap(\&Math::Random::random_chi_square,$safeeval,'&math_random_chi_square');
758: $safehole->wrap(\&Math::Random::random_exponential,$safeeval,'&math_random_exponential');
759: $safehole->wrap(\&Math::Random::random_f,$safeeval,'&math_random_f');
760: $safehole->wrap(\&Math::Random::random_gamma,$safeeval,'&math_random_gamma');
761: $safehole->wrap(\&Math::Random::random_multivariate_normal,$safeeval,'&math_random_multivariate_normal');
762: $safehole->wrap(\&Math::Random::random_multinomial,$safeeval,'&math_random_multinomial');
763: $safehole->wrap(\&Math::Random::random_noncentral_chi_square,$safeeval,'&math_random_noncentral_chi_square');
764: $safehole->wrap(\&Math::Random::random_noncentral_f,$safeeval,'&math_random_noncentral_f');
765: $safehole->wrap(\&Math::Random::random_normal,$safeeval,'&math_random_normal');
766: $safehole->wrap(\&Math::Random::random_permutation,$safeeval,'&math_random_permutation');
1.93 ng 767: $safehole->wrap(\&Math::Random::random_permuted_index,$safeeval,'&math_random_permuted_index');
1.91 ng 768: $safehole->wrap(\&Math::Random::random_uniform,$safeeval,'&math_random_uniform');
769: $safehole->wrap(\&Math::Random::random_poisson,$safeeval,'&math_random_poisson');
770: $safehole->wrap(\&Math::Random::random_uniform_integer,$safeeval,'&math_random_uniform_integer');
771: $safehole->wrap(\&Math::Random::random_negative_binomial,$safeeval,'&math_random_negative_binomial');
772: $safehole->wrap(\&Math::Random::random_binomial,$safeeval,'&math_random_binomial');
773: $safehole->wrap(\&Math::Random::random_seed_from_phrase,$safeeval,'&random_seed_from_phrase');
774: $safehole->wrap(\&Math::Random::random_set_seed_from_phrase,$safeeval,'&random_set_seed_from_phrase');
775: $safehole->wrap(\&Math::Random::random_get_seed,$safeeval,'&random_get_seed');
776: $safehole->wrap(\&Math::Random::random_set_seed,$safeeval,'&random_set_seed');
1.305 albertel 777: $safehole->wrap(\&Apache::lonxml::error,$safeeval,'&LONCAPA_INTERNAL_ERROR');
1.311 albertel 778: $safehole->wrap(\&Apache::lonxml::debug,$safeeval,'&LONCAPA_INTERNAL_DEBUG');
1.322 albertel 779: $safehole->wrap(\&Apache::caparesponse::get_sigrange,$safeeval,'&LONCAPA_INTERNAL_get_sigrange');
1.91 ng 780:
1.82 ng 781: #need to inspect this class of ops
782: # $safeeval->deny(":base_orig");
1.331 albertel 783: $safeeval->permit("require");
1.91 ng 784: $safeinit .= ';$external::target="'.$target.'";';
1.82 ng 785: &Apache::run::run($safeinit,$safeeval);
1.373 albertel 786: &initialize_rndseed($safeeval);
787: }
1.303 albertel 788:
1.393 albertel 789: sub clean_safespace {
790: my ($safeeval) = @_;
791: delete_package_recurse($safeeval->{Root});
792: }
793:
794: sub delete_package_recurse {
795: my ($package) = @_;
796: my @subp;
797: {
798: no strict 'refs';
799: while (my ($key,$val) = each(%{*{"$package\::"}})) {
800: if (!defined($val)) { next; }
801: local (*ENTRY) = $val;
802: if (defined *ENTRY{HASH} && $key =~ /::$/ &&
803: $key ne "main::" && $key ne "<none>::")
804: {
805: my ($p) = $package ne "main" ? "$package\::" : "";
806: ($p .= $key) =~ s/::$//;
807: push(@subp,$p);
808: }
809: }
810: }
811: foreach my $p (@subp) {
812: delete_package_recurse($p);
813: }
814: Symbol::delete_package($package);
815: }
816:
1.373 albertel 817: sub initialize_rndseed {
818: my ($safeeval)=@_;
819: my $rndseed;
820: my ($symb,$courseid,$domain,$name) = &Apache::lonxml::whichuser();
821: $rndseed=&Apache::lonnet::rndseed($symb,$courseid,$domain,$name);
822: my $safeinit = '$external::randomseed="'.$rndseed.'";';
823: &Apache::lonxml::debug("Setting rndseed to $rndseed");
824: &Apache::run::run($safeinit,$safeeval);
1.207 albertel 825: }
826:
827: sub default_homework_load {
828: my ($safeeval)=@_;
829: &Apache::lonxml::debug('Loading default_homework');
830: my $default=&Apache::lonnet::getfile('/home/httpd/html/res/adm/includes/default_homework.lcpm');
1.241 albertel 831: if ($default eq -1) {
1.207 albertel 832: &Apache::lonxml::error("<b>Unable to find <i>default_homework.lcpm</i></b>");
833: } else {
834: &Apache::run::run($default,$safeeval);
835: $Apache::lonxml::default_homework_loaded=1;
836: }
1.17 albertel 837: }
838:
1.358 albertel 839: {
840: my $alarm_depth;
841: sub init_alarm {
842: alarm(0);
843: $alarm_depth=0;
844: }
845:
846: sub start_alarm {
847: if ($alarm_depth<1) {
848: my $old=alarm($Apache::lonnet::perlvar{'lonScriptTimeout'});
849: if ($old) {
850: &Apache::lonxml::error("Cancelled an alarm of $old, this shouldn't occur.");
851: }
852: }
853: $alarm_depth++;
854: }
855:
856: sub end_alarm {
857: $alarm_depth--;
858: if ($alarm_depth<1) { alarm(0); }
859: }
860: }
1.328 albertel 861: my $metamode_was;
1.55 albertel 862: sub startredirection {
1.328 albertel 863: if (!$Apache::lonxml::redirection) {
864: $metamode_was=$Apache::lonxml::metamode;
865: }
866: $Apache::lonxml::metamode=0;
867: $Apache::lonxml::redirection++;
868: push (@Apache::lonxml::outputstack, '');
1.55 albertel 869: }
870:
871: sub endredirection {
1.328 albertel 872: if (!$Apache::lonxml::redirection) {
1.380 www 873: &Apache::lonxml::error("Endredirection was called before a startredirection, perhaps you have unbalanced tags. Some debugging information:".join ":",caller);
1.328 albertel 874: return '';
875: }
876: $Apache::lonxml::redirection--;
877: if (!$Apache::lonxml::redirection) {
878: $Apache::lonxml::metamode=$metamode_was;
879: }
880: pop @Apache::lonxml::outputstack;
1.97 albertel 881: }
882:
883: sub end_tag {
884: my ($tagstack,$parstack,$token)=@_;
885: pop(@$tagstack);
886: pop(@$parstack);
887: &decreasedepth($token);
1.55 albertel 888: }
889:
1.17 albertel 890: sub initdepth {
891: @Apache::lonxml::depthcounter=();
892: $Apache::lonxml::depth=-1;
893: $Apache::lonxml::olddepth=-1;
894: }
895:
1.339 albertel 896: my @timers;
897: my $lasttime;
1.17 albertel 898: sub increasedepth {
1.19 albertel 899: my ($token) = @_;
1.17 albertel 900: $Apache::lonxml::depth++;
901: $Apache::lonxml::depthcounter[$Apache::lonxml::depth]++;
902: if ($Apache::lonxml::depthcounter[$Apache::lonxml::depth]==1) {
903: $Apache::lonxml::olddepth=$Apache::lonxml::depth;
904: }
1.340 albertel 905: my $time;
906: if ($Apache::lonxml::debug eq "1") {
907: push(@timers,[&gettimeofday()]);
908: $time=&tv_interval($lasttime);
909: $lasttime=[&gettimeofday()];
910: }
1.339 albertel 911: my $spacing=' 'x($Apache::lonxml::depth-1);
1.42 albertel 912: my $curdepth=join('_',@Apache::lonxml::depthcounter);
1.339 albertel 913: &Apache::lonxml::debug("s$spacing$Apache::lonxml::depth : $Apache::lonxml::olddepth : $curdepth : $token->[1] : $time : \n");
1.54 albertel 914: #print "<br />s $Apache::lonxml::depth : $Apache::lonxml::olddepth : $curdepth : $token->[1]\n";
1.17 albertel 915: }
916:
917: sub decreasedepth {
1.19 albertel 918: my ($token) = @_;
1.17 albertel 919: $Apache::lonxml::depth--;
1.36 albertel 920: if ($Apache::lonxml::depth<$Apache::lonxml::olddepth-1) {
921: $#Apache::lonxml::depthcounter--;
922: $Apache::lonxml::olddepth=$Apache::lonxml::depth+1;
923: }
1.43 albertel 924: if ( $Apache::lonxml::depth < -1) {
1.280 www 925: &Apache::lonxml::warning(&mt("Missing tags, unable to properly run file."));
1.43 albertel 926: $Apache::lonxml::depth='-1';
927: }
1.340 albertel 928: my ($timer,$time);
929: if ($Apache::lonxml::debug eq "1") {
930: $timer=pop(@timers);
931: $time=&tv_interval($lasttime);
932: $lasttime=[&gettimeofday()];
933: }
1.339 albertel 934: my $spacing=' 'x$Apache::lonxml::depth;
1.42 albertel 935: my $curdepth=join('_',@Apache::lonxml::depthcounter);
1.339 albertel 936: &Apache::lonxml::debug("e$spacing$Apache::lonxml::depth : $Apache::lonxml::olddepth : $curdepth : $token->[1] : $time : ".&tv_interval($timer)."\n");
1.54 albertel 937: #print "<br />e $Apache::lonxml::depth : $Apache::lonxml::olddepth : $token->[1] : $curdepth\n";
1.1 sakharuk 938: }
1.19 albertel 939:
1.399 albertel 940: sub get_id {
941: my ($parstack,$safeeval)=@_;
942: my $id= &Apache::lonxml::get_param('id',$parstack,$safeeval);
943: if ($env{'request.state'} eq 'construct' && $id =~ /(\.|_)/) {
944: &error(&mt("IDs are not allowed to contain "<tt>_</tt>" or "<tt>.</tt>""));
945: }
946: if ($id =~ /^\s*$/) { $id = $Apache::lonxml::curdepth; }
947: return $id;
948: }
949:
1.180 albertel 950: sub get_all_text_unbalanced {
1.190 albertel 951: #there is a copy of this in lonpublisher.pm
1.326 albertel 952: my($tag,$pars)= @_;
953: my $token;
954: my $result='';
955: $tag='<'.$tag.'>';
956: while ($token = $$pars[-1]->get_token) {
957: if (($token->[0] eq 'T')||($token->[0] eq 'C')||($token->[0] eq 'D')) {
1.386 albertel 958: if ($token->[0] eq 'T' && $token->[2]) {
1.382 albertel 959: $result.='<![CDATA['.$token->[1].']]>';
960: } else {
961: $result.=$token->[1];
962: }
1.326 albertel 963: } elsif ($token->[0] eq 'PI') {
964: $result.=$token->[2];
965: } elsif ($token->[0] eq 'S') {
966: $result.=$token->[4];
967: } elsif ($token->[0] eq 'E') {
968: $result.=$token->[2];
969: }
970: if ($result =~ /\Q$tag\E/is) {
971: ($result,my $redo)=$result =~ /(.*)\Q$tag\E(.*)/is;
972: #&Apache::lonxml::debug('Got a winner with leftovers ::'.$2);
973: #&Apache::lonxml::debug('Result is :'.$1);
974: $redo=$tag.$redo;
975: &Apache::lonxml::newparser($pars,\$redo);
976: last;
977: }
978: }
979: return $result
1.204 albertel 980: }
981:
982: sub increment_counter {
1.247 albertel 983: my ($increment) = @_;
1.289 sakharuk 984: if (defined($increment) && $increment gt 0) {
985: $Apache::lonxml::counter+=$increment;
986: } else {
987: $Apache::lonxml::counter++;
1.247 albertel 988: }
1.289 sakharuk 989: $Apache::lonxml::counter_changed=1;
1.204 albertel 990: }
991:
992: sub init_counter {
1.391 albertel 993: if ($env{'request.state'} eq 'construct') {
994: $Apache::lonxml::counter=1;
995: $Apache::lonxml::counter_changed=1;
996: } elsif (defined($env{'form.counter'})) {
1.372 albertel 997: $Apache::lonxml::counter=$env{'form.counter'};
1.247 albertel 998: $Apache::lonxml::counter_changed=0;
1.237 sakharuk 999: } else {
1.204 albertel 1000: $Apache::lonxml::counter=1;
1.247 albertel 1001: $Apache::lonxml::counter_changed=1;
1.204 albertel 1002: }
1003: }
1004:
1005: sub store_counter {
1006: &Apache::lonnet::appenv(('form.counter' => $Apache::lonxml::counter));
1.401 albertel 1007: $Apache::lonxml::counter_changed=0;
1.204 albertel 1008: return '';
1.180 albertel 1009: }
1010:
1.398 albertel 1011: {
1012: my $state;
1013: sub clear_problem_counter {
1014: undef($state);
1015: &Apache::lonnet::delenv('form.counter');
1016: &Apache::lonxml::init_counter();
1017: &Apache::lonxml::store_counter();
1018: }
1019:
1020: sub remember_problem_counter {
1021: &Apache::lonnet::transfer_profile_to_env();
1022: $state = $env{'form.counter'};
1023: }
1024:
1025: sub restore_problem_counter {
1026: if (defined($state)) {
1027: &Apache::lonnet::appenv(('form.counter' => $state));
1028: }
1029: }
1.401 albertel 1030: sub get_problem_counter {
1031: if ($Apache::lonxml::counter_changed) { &store_counter() }
1032: &Apache::lonnet::transfer_profile_to_env();
1033: return $env{'form.counter'};
1034: }
1.398 albertel 1035: }
1036:
1.19 albertel 1037: sub get_all_text {
1.270 albertel 1038: my($tag,$pars,$style)= @_;
1039: my $gotfullstack=1;
1040: if (ref($pars) ne 'ARRAY') {
1041: $gotfullstack=0;
1042: $pars=[$pars];
1043: }
1044: if (ref($style) ne 'HASH') {
1045: $style={};
1046: }
1047: my $depth=0;
1048: my $token;
1049: my $result='';
1050: if ( $tag =~ m:^/: ) {
1051: my $tag=substr($tag,1);
1052: #&Apache::lonxml::debug("have:$tag:");
1053: my $top_empty=0;
1054: while (($depth >=0) && ($#$pars > -1) && (!$top_empty)) {
1055: while (($depth >=0) && ($token = $$pars[-1]->get_token)) {
1056: #&Apache::lonxml::debug("e token:$token->[0]:$depth:$token->[1]:".$#$pars.":".$#Apache::lonxml::pwd);
1057: if (($token->[0] eq 'T')||($token->[0] eq 'C')||($token->[0] eq 'D')) {
1.382 albertel 1058: if ($token->[2]) {
1059: $result.='<![CDATA['.$token->[1].']]>';
1060: } else {
1061: $result.=$token->[1];
1062: }
1.270 albertel 1063: } elsif ($token->[0] eq 'PI') {
1064: $result.=$token->[2];
1065: } elsif ($token->[0] eq 'S') {
1.316 albertel 1066: if ($token->[1] =~ /^\Q$tag\E$/i) { $depth++; }
1067: if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_ON$/) { $Apache::lonxml::usestyle=1; }
1068: if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_OFF$/) { $Apache::lonxml::usestyle=0; }
1.270 albertel 1069: $result.=$token->[4];
1070: } elsif ($token->[0] eq 'E') {
1.316 albertel 1071: if ( $token->[1] =~ /^\Q$tag\E$/i) { $depth--; }
1.270 albertel 1072: #skip sending back the last end tag
1.283 albertel 1073: if ($depth == 0 && exists($$style{'/'.$token->[1]}) && $Apache::lonxml::usestyle) {
1.270 albertel 1074: my $string=
1075: '<LONCAPA_INTERNAL_TURN_STYLE_OFF end="yes" />'.
1076: $$style{'/'.$token->[1]}.
1077: $token->[2].
1078: '<LONCAPA_INTERNAL_TURN_STYLE_ON />';
1079: &Apache::lonxml::newparser($pars,\$string);
1080: #&Apache::lonxml::debug("reParsing $string");
1081: next;
1082: }
1083: if ($depth > -1) {
1084: $result.=$token->[2];
1085: } else {
1086: $$pars[-1]->unget_token($token);
1087: }
1088: }
1089: }
1090: if (($depth >=0) && ($#$pars == 0) ) { $top_empty=1; }
1091: if (($depth >=0) && ($#$pars > 0) ) {
1092: pop(@$pars);
1093: pop(@Apache::lonxml::pwd);
1094: }
1095: }
1096: if ($top_empty && $depth >= 0) {
1097: #never found the end tag ran out of text, throw error send back blank
1098: &error('Never found end tag for <'.$tag.
1099: '> current string <pre>'.
1.314 albertel 1100: &HTML::Entities::encode($result,'<>&"').
1.270 albertel 1101: '</pre>');
1102: if ($gotfullstack) {
1103: my $newstring='</'.$tag.'>'.$result;
1104: &Apache::lonxml::newparser($pars,\$newstring);
1105: }
1106: $result='';
1107: }
1108: } else {
1109: while ($#$pars > -1) {
1110: while ($token = $$pars[-1]->get_token) {
1111: #&Apache::lonxml::debug("s token:$token->[0]:$depth:$token->[1]");
1112: if (($token->[0] eq 'T')||($token->[0] eq 'C')||
1113: ($token->[0] eq 'D')) {
1.382 albertel 1114: if ($token->[2]) {
1115: $result.='<![CDATA['.$token->[1].']]>';
1116: } else {
1117: $result.=$token->[1];
1118: }
1.270 albertel 1119: } elsif ($token->[0] eq 'PI') {
1120: $result.=$token->[2];
1121: } elsif ($token->[0] eq 'S') {
1.316 albertel 1122: if ( $token->[1] =~ /^\Q$tag\E$/i) {
1.270 albertel 1123: $$pars[-1]->unget_token($token); last;
1124: } else {
1125: $result.=$token->[4];
1126: }
1.316 albertel 1127: if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_ON$/) { $Apache::lonxml::usestyle=1; }
1128: if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_OFF$/) { $Apache::lonxml::usestyle=0; }
1.270 albertel 1129: } elsif ($token->[0] eq 'E') {
1130: $result.=$token->[2];
1131: }
1132: }
1133: if (($#$pars > 0) ) {
1134: pop(@$pars);
1135: pop(@Apache::lonxml::pwd);
1136: } else { last; }
1137: }
1138: }
1139: #&Apache::lonxml::debug("Exit:$result:");
1140: return $result
1.19 albertel 1141: }
1142:
1.23 albertel 1143: sub newparser {
1144: my ($parser,$contentref,$dir) = @_;
1.167 albertel 1145: push (@$parser,HTML::LCParser->new($contentref));
1.365 albertel 1146: $$parser[-1]->xml_mode(1);
1147: $$parser[-1]->marked_sections(1);
1.23 albertel 1148: if ( $dir eq '' ) {
1149: push (@Apache::lonxml::pwd, $Apache::lonxml::pwd[$#Apache::lonxml::pwd]);
1150: } else {
1151: push (@Apache::lonxml::pwd, $dir);
1152: }
1153: }
1.1 sakharuk 1154:
1.8 albertel 1155: sub parstring {
1156: my ($token) = @_;
1157: my $temp='';
1.142 albertel 1158: foreach (@{$token->[3]}) {
1.35 www 1159: unless ($_=~/\W/) {
1.42 albertel 1160: my $val=$token->[2]->{$_};
1.231 albertel 1161: $val =~ s/([\%\@\\\"\'])/\\$1/g;
1.342 albertel 1162: $val =~ s/(\$[^{a-zA-Z_])/\\$1/g;
1.346 albertel 1163: $val =~ s/(\$)$/\\$1/;
1.51 albertel 1164: #if ($val =~ m/^[\%\@]/) { $val="\\".$val; }
1.267 sakharuk 1165: $temp .= "my \$$_=\"$val\";";
1.20 albertel 1166: }
1.142 albertel 1167: }
1.8 albertel 1168: return $temp;
1169: }
1.22 albertel 1170:
1.384 albertel 1171: sub extlink {
1172: my ($res,$exact)=@_;
1173: if (!$exact) {
1174: $res=&Apache::lonnet::hreflocation($Apache::lonxml::pwd[-1],$res);
1175: }
1176: push(@Apache::lonxml::extlinks,$res)
1177: }
1178:
1.34 www 1179: sub writeallows {
1.126 www 1180: unless ($#extlinks>=0) { return; }
1.377 albertel 1181: my $thisurl = &Apache::lonnet::clutter(shift);
1.372 albertel 1182: if ($env{'httpref.'.$thisurl}) {
1183: $thisurl=$env{'httpref.'.$thisurl};
1.111 www 1184: }
1.34 www 1185: my $thisdir=$thisurl;
1186: $thisdir=~s/\/[^\/]+$//;
1187: my %httpref=();
1.142 albertel 1188: foreach (@extlinks) {
1.34 www 1189: $httpref{'httpref.'.
1.125 www 1190: &Apache::lonnet::hreflocation($thisdir,$_)}=$thisurl;
1.142 albertel 1191: }
1.126 www 1192: @extlinks=();
1.34 www 1193: &Apache::lonnet::appenv(%httpref);
1194: }
1195:
1.281 albertel 1196: sub register_ssi {
1197: my ($url,%form)=@_;
1198: push (@Apache::lonxml::ssi_info,{'url'=>$url,'form'=>\%form});
1199: return '';
1200: }
1201:
1202: sub do_registered_ssi {
1203: foreach my $info (@Apache::lonxml::ssi_info) {
1204: my %form=%{ $info->{'form'}};
1205: my $url=$info->{'url'};
1206: &Apache::lonnet::ssi($url,%form);
1207: }
1208: }
1.66 www 1209: #
1210: # Afterburner handles anchors, highlights and links
1211: #
1212: sub afterburn {
1213: my $result=shift;
1.154 albertel 1214: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
1215: ['highlight','anchor','link']);
1.372 albertel 1216: if ($env{'form.highlight'}) {
1217: foreach (split(/\,/,$env{'form.highlight'})) {
1.66 www 1218: my $anchorname=$_;
1219: my $matchthis=$anchorname;
1220: $matchthis=~s/\_+/\\s\+/g;
1.317 albertel 1221: $result=~s/(\Q$matchthis\E)/\<font color=\"red\"\>$1\<\/font\>/gs;
1.142 albertel 1222: }
1.66 www 1223: }
1.372 albertel 1224: if ($env{'form.link'}) {
1225: foreach (split(/\,/,$env{'form.link'})) {
1.66 www 1226: my ($anchorname,$linkurl)=split(/\>/,$_);
1227: my $matchthis=$anchorname;
1228: $matchthis=~s/\_+/\\s\+/g;
1.317 albertel 1229: $result=~s/(\Q$matchthis\E)/\<a href=\"$linkurl\"\>$1\<\/a\>/gs;
1.142 albertel 1230: }
1.66 www 1231: }
1.372 albertel 1232: if ($env{'form.anchor'}) {
1233: my $anchorname=$env{'form.anchor'};
1.66 www 1234: my $matchthis=$anchorname;
1235: $matchthis=~s/\_+/\\s\+/g;
1.317 albertel 1236: $result=~s/(\Q$matchthis\E)/\<a name=\"$anchorname\"\>$1\<\/a\>/s;
1.66 www 1237: $result.=(<<"ENDSCRIPT");
1.226 albertel 1238: <script type="text/javascript">
1.66 www 1239: document.location.hash='$anchorname';
1240: </script>
1241: ENDSCRIPT
1242: }
1243: return $result;
1244: }
1245:
1.79 www 1246: sub storefile {
1247: my ($file,$contents)=@_;
1.290 albertel 1248: &Apache::lonnet::correct_line_ends(\$contents);
1.79 www 1249: if (my $fh=Apache::File->new('>'.$file)) {
1250: print $fh $contents;
1251: $fh->close();
1.271 www 1252: return 1;
1.147 albertel 1253: } else {
1.271 www 1254: &warning("Unable to save file $file");
1255: return 0;
1.79 www 1256: }
1257: }
1258:
1.151 albertel 1259: sub createnewhtml {
1.321 www 1260: my $title=&mt('Title of document goes here');
1261: my $body=&mt('Body of document goes here');
1262: my $filecontents=(<<SIMPLECONTENT);
1.78 www 1263: <html>
1264: <head>
1.321 www 1265: <title>$title</title>
1.78 www 1266: </head>
1267: <body bgcolor="#FFFFFF">
1.321 www 1268: $body
1.78 www 1269: </body>
1270: </html>
1271: SIMPLECONTENT
1.321 www 1272: return $filecontents;
1.151 albertel 1273: }
1274:
1.274 albertel 1275: sub createnewsty {
1276: my $filecontents=(<<SIMPLECONTENT);
1277: <definetag name="">
1278: <render>
1279: <web></web>
1280: <tex></tex>
1281: </render>
1282: </definetag>
1283: SIMPLECONTENT
1284: return $filecontents;
1285: }
1286:
1.147 albertel 1287:
1.151 albertel 1288: sub inserteditinfo {
1.274 albertel 1289: my ($result,$filecontents,$filetype)=@_;
1.314 albertel 1290: $filecontents = &HTML::Entities::encode($filecontents,'<>&"');
1.147 albertel 1291: # my $editheader='<a href="#editsection">Edit below</a><hr />';
1.274 albertel 1292: my $xml_help = '';
1.321 www 1293: my $initialize='';
1.274 albertel 1294: if ($filetype eq 'html') {
1.323 www 1295: my $addbuttons=&Apache::lonhtmlcommon::htmlareaaddbuttons();
1.333 www 1296: $initialize=&Apache::lonhtmlcommon::htmlareaheaders().
1.347 albertel 1297: &Apache::lonhtmlcommon::spellheader();
1298: if (!&Apache::lonhtmlcommon::htmlareablocked() &&
1299: &Apache::lonhtmlcommon::htmlareabrowser()) {
1300: $initialize.=(<<FULLPAGE);
1.321 www 1301: <script type="text/javascript">
1.323 www 1302: $addbuttons
1303:
1.321 www 1304: HTMLArea.loadPlugin("FullPage");
1305:
1306: function initDocument() {
1.323 www 1307: var editor=new HTMLArea("filecont",config);
1.321 www 1308: editor.registerPlugin(FullPage);
1309: editor.generate();
1310: }
1311: </script>
1312: FULLPAGE
1.347 albertel 1313: } else {
1314: $initialize.=(<<FULLPAGE);
1315: <script type="text/javascript">
1316: $addbuttons
1317: function initDocument() {
1318: }
1319: </script>
1320: FULLPAGE
1321: }
1.321 www 1322: $result=~s/\<body([^\>]*)\>/\<body onload="initDocument()" $1\>/i;
1323: $xml_help=&Apache::loncommon::helpLatexCheatsheet();
1.274 albertel 1324: }
1325: my $cleanbut = '';
1.374 www 1326:
1.254 albertel 1327: my $titledisplay=&display_title();
1.280 www 1328: my %lt=&Apache::lonlocal::texthash('st' => 'Save this',
1329: 'vi' => 'View',
1330: 'ed' => 'Edit');
1.161 albertel 1331: my $buttons=(<<BUTTONS);
1.274 albertel 1332: $cleanbut
1.304 matthew 1333: <input type="submit" name="savethisfile" accesskey="s" value="$lt{'st'}" />
1334: <input type="submit" name="viewmode" accesskey="v" value="$lt{'vi'}" />
1.161 albertel 1335: BUTTONS
1.333 www 1336: $buttons.=&Apache::lonhtmlcommon::spelllink('xmledit','filecont');
1.338 albertel 1337: $buttons.=&Apache::lonhtmlcommon::htmlareaselectactive('filecont');
1.78 www 1338: my $editfooter=(<<ENDFOOTER);
1.321 www 1339: $initialize
1.78 www 1340: <hr />
1341: <a name="editsection" />
1.333 www 1342: <form method="post" name="xmledit">
1.240 albertel 1343: $xml_help
1.280 www 1344: <input type="hidden" name="editmode" value="$lt{'ed'}" />
1.170 www 1345: $buttons<br />
1.366 albertel 1346: <textarea style="width:100%" cols="80" rows="44" name="filecont" id="filecont">$filecontents</textarea>
1.170 www 1347: <br />$buttons
1.78 www 1348: <br />
1349: </form>
1.254 albertel 1350: $titledisplay
1.321 www 1351: </body>
1.78 www 1352: ENDFOOTER
1.147 albertel 1353: # $result=~s/(\<body[^\>]*\>)/$1$editheader/is;
1.78 www 1354: $result=~s/(\<\/body\>)/$editfooter/is;
1355: return $result;
1356: }
1357:
1.152 albertel 1358: sub get_target {
1.372 albertel 1359: my $viewgrades=&Apache::lonnet::allowed('vgr',$env{'request.course.id'});
1360: if ( $env{'request.state'} eq 'published') {
1361: if ( defined($env{'form.grade_target'})
1.152 albertel 1362: && ($viewgrades == 'F' )) {
1.372 albertel 1363: return ($env{'form.grade_target'});
1364: } elsif (defined($env{'form.grade_target'})) {
1365: if (($env{'form.grade_target'} eq 'web') ||
1366: ($env{'form.grade_target'} eq 'tex') ) {
1367: return $env{'form.grade_target'}
1.153 albertel 1368: } else {
1369: return 'web';
1370: }
1.152 albertel 1371: } else {
1372: return 'web';
1373: }
1.372 albertel 1374: } elsif ($env{'request.state'} eq 'construct') {
1375: if ( defined($env{'form.grade_target'})) {
1376: return ($env{'form.grade_target'});
1.152 albertel 1377: } else {
1378: return 'web';
1379: }
1380: } else {
1381: return 'web';
1382: }
1383: }
1384:
1.24 sakharuk 1385: sub handler {
1.255 sakharuk 1386: my $request=shift;
1387:
1388: my $target=&get_target();
1389:
1.372 albertel 1390: $Apache::lonxml::debug=$env{'user.debug'};
1.255 sakharuk 1391:
1.364 albertel 1392: &Apache::loncommon::content_type($request,'text/html');
1.255 sakharuk 1393: &Apache::loncommon::no_cache($request);
1.372 albertel 1394: if ($env{'request.state'} eq 'published') {
1.363 albertel 1395: $request->set_last_modified(&Apache::lonnet::metadata($request->uri,
1396: 'lastrevisiondate'));
1397: }
1.255 sakharuk 1398: $request->send_http_header;
1399:
1400: return OK if $request->header_only;
1.68 www 1401:
1402:
1.255 sakharuk 1403: my $file=&Apache::lonnet::filelocation("",$request->uri);
1.274 albertel 1404: my $filetype;
1405: if ($file =~ /\.sty$/) {
1406: $filetype='sty';
1407: } else {
1408: $filetype='html';
1409: }
1.78 www 1410: #
1411: # Edit action? Save file.
1412: #
1.372 albertel 1413: unless ($env{'request.state'} eq 'published') {
1.374 www 1414: if ($env{'form.savethisfile'}) {
1.372 albertel 1415: if (&storefile($file,$env{'form.filecont'})) {
1.309 albertel 1416: &Apache::lonxml::info("<font COLOR=\"#0000FF\">".
1417: &mt('Updated').": ".
1418: &Apache::lonlocal::locallocaltime(time).
1419: " </font>");
1.271 www 1420: }
1.255 sakharuk 1421: }
1422: }
1423: my %mystyle;
1424: my $result = '';
1425: my $filecontents=&Apache::lonnet::getfile($file);
1426: if ($filecontents eq -1) {
1.402 albertel 1427: my $start_page=&Apache::loncommon::start_page('File Error');
1428: my $end_page=&Apache::loncommon::end_page('File Error');
1.284 www 1429: my $fnf=&mt('File not found');
1.255 sakharuk 1430: $result=(<<ENDNOTFOUND);
1.402 albertel 1431: $start_page
1.284 www 1432: <b>$fnf: $file</b>
1.402 albertel 1433: $end_page
1.78 www 1434: ENDNOTFOUND
1.343 albertel 1435: $filecontents='';
1.372 albertel 1436: if ($env{'request.state'} ne 'published') {
1.274 albertel 1437: if ($filetype eq 'sty') {
1438: $filecontents=&createnewsty();
1439: } else {
1440: $filecontents=&createnewhtml();
1441: }
1.372 albertel 1442: $env{'form.editmode'}='Edit'; #force edit mode
1.255 sakharuk 1443: }
1444: } else {
1.372 albertel 1445: unless ($env{'request.state'} eq 'published') {
1.343 albertel 1446: if ($filecontents=~/BEGIN LON-CAPA Internal/) {
1.381 www 1447: &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 1448: }
1.264 www 1449: #
1450: # we are in construction space, see if edit mode forced
1.385 albertel 1451: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
1452: ['editmode']);
1.255 sakharuk 1453: }
1.372 albertel 1454: if (!$env{'form.editmode'} || $env{'form.viewmode'}) {
1.255 sakharuk 1455: $result = &Apache::lonxml::xmlparse($request,$target,$filecontents,
1456: '',%mystyle);
1.368 albertel 1457: undef($Apache::lonhomework::parsing_a_task);
1.385 albertel 1458: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
1459: ['rawmode']);
1.395 albertel 1460: if ($env{'form.rawmode'}) { $result = $filecontents; }
1.255 sakharuk 1461: }
1.147 albertel 1462: }
1.255 sakharuk 1463:
1.78 www 1464: #
1465: # Edit action? Insert editing commands
1466: #
1.372 albertel 1467: unless ($env{'request.state'} eq 'published') {
1468: if ($env{'form.editmode'} && (!($env{'form.viewmode'}))) {
1.255 sakharuk 1469: my $displayfile=$request->uri;
1470: $displayfile=~s/^\/[^\/]*//;
1.402 albertel 1471: my %options = ();
1472: if ($env{'environment.remote'} ne 'off') {
1473: $options{'bgcolor'} = '#FFFFFF';
1.349 albertel 1474: }
1.402 albertel 1475: my $start_page = &Apache::loncommon::start_page(undef,undef,
1476: \%options);
1477: $result=$start_page.
1.309 albertel 1478: &Apache::lonxml::message_location().'<h3>'.
1479: $displayfile.
1.402 albertel 1480: '</h3>'.&Apache::loncommon::end_page();
1.274 albertel 1481: $result=&inserteditinfo($result,$filecontents,$filetype);
1.255 sakharuk 1482: }
1.147 albertel 1483: }
1.402 albertel 1484: if ($filetype eq 'html') { &writeallows($request->uri); }
1.274 albertel 1485:
1.255 sakharuk 1486:
1.309 albertel 1487: &Apache::lonxml::add_messages(\$result);
1.255 sakharuk 1488: $request->print($result);
1489:
1490: return OK;
1.253 albertel 1491: }
1492:
1493: sub display_title {
1494: my $result;
1.372 albertel 1495: if ($env{'request.state'} eq 'construct') {
1.253 albertel 1496: my $title=&Apache::lonnet::gettitle();
1497: if (!defined($title) || $title eq '') {
1.372 albertel 1498: $title = $env{'request.filename'};
1.253 albertel 1499: $title = substr($title, rindex($title, '/') + 1);
1500: }
1501: $result = "<script type='text/javascript'>top.document.title = '$title - LON-CAPA Construction Space';</script>";
1502: }
1503: return $result;
1.24 sakharuk 1504: }
1.147 albertel 1505:
1.22 albertel 1506: sub debug {
1.298 albertel 1507: if ($Apache::lonxml::debug eq "1") {
1508: $|=1;
1.300 albertel 1509: my $request=$Apache::lonxml::request;
1.388 albertel 1510: if (!$request) {
1511: eval { $request=Apache->request; };
1512: }
1513: if (!$request) {
1514: eval { $request=Apache2::RequestUtil->request; };
1515: }
1.314 albertel 1516: $request->print('<font size="-2"><pre>DEBUG:'.&HTML::Entities::encode($_[0],'<>&"')."</pre></font>\n");
1.346 albertel 1517: #&Apache::lonnet::logthis($_[0]);
1.298 albertel 1518: }
1.22 albertel 1519: }
1.49 albertel 1520:
1.348 albertel 1521: sub show_error_warn_msg {
1.372 albertel 1522: if ($env{'request.filename'} eq '/home/httpd/html/res/lib/templates/simpleproblem.problem' &&
1523: &Apache::lonnet::allowed('mdc',$env{'request.course.id'})) {
1.351 albertel 1524: return 1;
1525: }
1.348 albertel 1526: return (($Apache::lonxml::debug eq 1) ||
1.372 albertel 1527: ($env{'request.state'} eq 'construct') ||
1.348 albertel 1528: ($Apache::lonhomework::browse eq 'F'
1529: &&
1.372 albertel 1530: $env{'form.show_errors'} eq 'on'));
1.348 albertel 1531: }
1532:
1.22 albertel 1533: sub error {
1.336 albertel 1534: $errorcount++;
1.348 albertel 1535: if ( &show_error_warn_msg() ) {
1.336 albertel 1536: # If printing in construction space, put the error inside <pre></pre>
1537: push(@Apache::lonxml::error_messages,
1538: $Apache::lonxml::warnings_error_header.
1539: "<b>ERROR:</b>".join("<br />\n",@_)."<br />\n");
1540: $Apache::lonxml::warnings_error_header='';
1541: } else {
1542: my $errormsg;
1543: my ($symb)=&Apache::lonnet::symbread();
1544: if ( !$symb ) {
1545: #public or browsers
1546: $errormsg=&mt("An error occured while processing this resource. The author has been notified.");
1.403 albertel 1547: }
1.404 albertel 1548: my $msg = join('<br />',@_);
1.336 albertel 1549: #notify author
1.403 albertel 1550: &Apache::lonmsg::author_res_msg($env{'request.filename'},$msg);
1.336 albertel 1551: #notify course
1.372 albertel 1552: if ( $symb && $env{'request.course.id'} ) {
1.380 www 1553: my $cnum=$env{'course.'.$env{'request.course.id'}.'.num'};
1554: my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
1.336 albertel 1555: my (undef,%users)=&Apache::lonfeedback::decide_receiver(undef,0,1,1,1);
1.372 albertel 1556: my $declutter=&Apache::lonnet::declutter($env{'request.filename'});
1.336 albertel 1557: my @userlist;
1558: foreach (keys %users) {
1559: my ($user,$domain) = split(/:/, $_);
1560: push(@userlist,"$user\@$domain");
1.380 www 1561: my $key=$declutter.'_'.$user.'_'.$domain;
1562: my %lastnotified=&Apache::lonnet::get('nohist_xmlerrornotifications',
1563: [$key],
1564: $cdom,$cnum);
1565: my $now=time;
1566: if ($now-$lastnotified{$key}>86400) {
1567: &Apache::lonmsg::user_normal_msg($user,$domain,
1.403 albertel 1568: "Error [$declutter]",$msg);
1.380 www 1569: &Apache::lonnet::put('nohist_xmlerrornotifications',
1570: {$key => $now},
1571: $cdom,$cnum);
1572: }
1.336 albertel 1573: }
1.372 albertel 1574: if ($env{'request.role.adv'}) {
1.336 albertel 1575: $errormsg=&mt("An error occured while processing this resource. The course personnel ([_1]) and the author have been notified.",join(', ',@userlist));
1576: } else {
1577: $errormsg=&mt("An error occured while processing this resource. The instructor has been notified.");
1578: }
1579: }
1580: push(@Apache::lonxml::error_messages,"<b>$errormsg</b> <br />");
1.52 albertel 1581: }
1.22 albertel 1582: }
1.49 albertel 1583:
1.22 albertel 1584: sub warning {
1.295 albertel 1585: $warningcount++;
1.261 albertel 1586:
1.372 albertel 1587: if ($env{'form.grade_target'} ne 'tex') {
1.348 albertel 1588: if ( &show_error_warn_msg() ) {
1.309 albertel 1589: push(@Apache::lonxml::warning_messages,
1590: $Apache::lonxml::warnings_error_header.
1591: "<b>W</b>ARNING<b>:</b>".join('<br />',@_)."<br />\n");
1.295 albertel 1592: $Apache::lonxml::warnings_error_header='';
1593: }
1594: }
1.309 albertel 1595: }
1596:
1597: sub info {
1.372 albertel 1598: if ($env{'form.grade_target'} ne 'tex'
1599: && $env{'request.state'} eq 'construct') {
1.309 albertel 1600: push(@Apache::lonxml::info_messages,join('<br />',@_)."<br />\n");
1601: }
1602: }
1603:
1604: sub message_location {
1605: return '__LONCAPA_INTERNAL_MESSAGE_LOCATION__';
1606: }
1607:
1608: sub add_messages {
1609: my ($msg)=@_;
1610: my $result=join(' ',
1611: @Apache::lonxml::info_messages,
1612: @Apache::lonxml::error_messages,
1613: @Apache::lonxml::warning_messages);
1614: undef(@Apache::lonxml::info_messages);
1615: undef(@Apache::lonxml::error_messages);
1616: undef(@Apache::lonxml::warning_messages);
1617: $$msg=~s/__LONCAPA_INTERNAL_MESSAGE_LOCATION__/$result/;
1618: $$msg=~s/__LONCAPA_INTERNAL_MESSAGE_LOCATION__//g;
1.83 albertel 1619: }
1620:
1621: sub get_param {
1.213 albertel 1622: my ($param,$parstack,$safeeval,$context,$case_insensitive) = @_;
1623: if ( ! $context ) { $context = -1; }
1624: my $args ='';
1625: if ( $#$parstack > (-2-$context) ) { $args=$$parstack[$context]; }
1.297 sakharuk 1626: if ( ! $Apache::lonxml::usestyle ) {
1627: $args=$Apache::lonxml::style_values.$args;
1628: }
1.213 albertel 1629: if ( ! $args ) { return undef; }
1630: if ( $case_insensitive ) {
1631: if ($args =~ s/(my \$)(\Q$param\E)(=\")/$1.lc($2).$3/ei) {
1632: return &Apache::run::run("{$args;".'return $'.$param.'}',
1633: $safeeval); #'
1634: } else {
1635: return undef;
1636: }
1637: } else {
1638: if ( $args =~ /my \$\Q$param\E=\"/ ) {
1639: return &Apache::run::run("{$args;".'return $'.$param.'}',
1640: $safeeval); #'
1641: } else {
1642: return undef;
1643: }
1644: }
1.22 albertel 1645: }
1646:
1.132 albertel 1647: sub get_param_var {
1.213 albertel 1648: my ($param,$parstack,$safeeval,$context,$case_insensitive) = @_;
1.132 albertel 1649: if ( ! $context ) { $context = -1; }
1650: my $args ='';
1651: if ( $#$parstack > (-2-$context) ) { $args=$$parstack[$context]; }
1.297 sakharuk 1652: if ( ! $Apache::lonxml::usestyle ) {
1653: $args=$Apache::lonxml::style_values.$args;
1654: }
1.230 albertel 1655: &Apache::lonxml::debug("Args are $args param is $param");
1.213 albertel 1656: if ($case_insensitive) {
1657: if (! ($args=~s/(my \$)(\Q$param\E)(=\")/$1.lc($2).$3/ei)) {
1658: return undef;
1659: }
1660: } elsif ( $args !~ /my \$\Q$param\E=\"/ ) { return undef; }
1.132 albertel 1661: my $value=&Apache::run::run("{$args;".'return $'.$param.'}',$safeeval); #'
1.230 albertel 1662: &Apache::lonxml::debug("first run is $value");
1.341 albertel 1663: if ($value =~ /^[\$\@\%][a-zA-Z_]\w*$/) {
1.230 albertel 1664: &Apache::lonxml::debug("doing second");
1665: my @result=&Apache::run::run("return $value",$safeeval,1);
1666: if (!defined($result[0])) {
1667: return $value
1668: } else {
1669: if (wantarray) { return @result; } else { return $result[0]; }
1670: }
1.132 albertel 1671: } else {
1672: return $value;
1673: }
1674: }
1675:
1.74 albertel 1676: sub register_insert {
1.75 albertel 1677: my @data = split /\n/, &Apache::lonnet::getfile('/home/httpd/lonTabs/insertlist.tab');
1.74 albertel 1678: my $i;
1.76 albertel 1679: my $tagnum=0;
1.74 albertel 1680: my @order;
1681: for ($i=0;$i < $#data; $i++) {
1682: my $line = $data[$i];
1683: if ( $line =~ /^\#/ || $line =~ /^\s*\n/) { next; }
1684: if ( $line =~ /TABLE/ ) { last; }
1.268 bowersj2 1685: my ($tag,$descrip,$color,$function,$show,$helpfile,$helpdesc) = split(/,/, $line);
1.135 albertel 1686: if ($tag) {
1687: $insertlist{"$tagnum.tag"} = $tag;
1688: $insertlist{"$tagnum.description"} = $descrip;
1689: $insertlist{"$tagnum.color"} = $color;
1690: $insertlist{"$tagnum.function"} = $function;
1691: if (!defined($show)) { $show='yes'; }
1692: $insertlist{"$tagnum.show"}= $show;
1.268 bowersj2 1693: $insertlist{"$tagnum.helpfile"} = $helpfile;
1694: $insertlist{"$tagnum.helpdesc"} = $helpdesc;
1.135 albertel 1695: $insertlist{"$tag.num"}=$tagnum;
1696: $tagnum++;
1697: }
1.74 albertel 1698: }
1.76 albertel 1699: $i++; #skipping TABLE line
1700: $tagnum = 0;
1.74 albertel 1701: for (;$i < $#data;$i++) {
1702: my $line = $data[$i];
1.76 albertel 1703: my ($mnemonic,@which) = split(/ +/,$line);
1704: my $tag = $insertlist{"$tagnum.tag"};
1.144 matthew 1705: for (my $j=0;$j <=$#which;$j++) {
1.74 albertel 1706: if ( $which[$j] eq 'Y' ) {
1.76 albertel 1707: if ($insertlist{"$j.show"} ne 'no') {
1708: push(@{ $insertlist{"$tag.which"} },$j);
1709: }
1.74 albertel 1710: }
1711: }
1.76 albertel 1712: $tagnum++;
1.74 albertel 1713: }
1714: }
1.98 albertel 1715:
1716: sub description {
1717: my ($token)=@_;
1.138 albertel 1718: my $tagnum;
1719: my $tag=$token->[1];
1720: foreach my $namespace (reverse @Apache::lonxml::namespace) {
1721: my $testtag=$namespace.'::'.$tag;
1722: $tagnum=$insertlist{"$testtag.num"};
1723: if (defined($tagnum)) { last; }
1724: }
1725: if (!defined ($tagnum)) { $tagnum=$Apache::lonxml::insertlist{"$tag.num"}; }
1726: return $insertlist{$tagnum.'.description'};
1.268 bowersj2 1727: }
1728:
1729: # Returns a list containing the help file, and the description
1730: sub helpinfo {
1731: my ($token)=@_;
1732: my $tagnum;
1733: my $tag=$token->[1];
1734: foreach my $namespace (reverse @Apache::lonxml::namespace) {
1735: my $testtag=$namespace.'::'.$tag;
1736: $tagnum=$insertlist{"$testtag.num"};
1737: if (defined($tagnum)) { last; }
1738: }
1739: if (!defined ($tagnum)) { $tagnum=$Apache::lonxml::insertlist{"$tag.num"}; }
1740: return ($insertlist{$tagnum.'.helpfile'}, $insertlist{$tagnum.'.helpdesc'});
1.98 albertel 1741: }
1.123 albertel 1742:
1743: # ----------------------------------------------------------------- whichuser
1744: # returns a list of $symb, $courseid, $domain, $name that is correct for
1745: # calls to lonnet functions for this setup.
1746: # - looks for form.grade_ parameters
1747: sub whichuser {
1.262 matthew 1748: my ($passedsymb)=@_;
1.245 albertel 1749: my ($symb,$courseid,$domain,$name,$publicuser);
1.372 albertel 1750: if (defined($env{'form.grade_symb'})) {
1.350 albertel 1751: my ($tmp_courseid)=
1752: &Apache::loncommon::get_env_multiple('form.grade_courseid');
1753: my $allowed=&Apache::lonnet::allowed('vgr',$tmp_courseid);
1754: if (!$allowed &&
1.372 albertel 1755: exists($env{'request.course.sec'}) &&
1756: $env{'request.course.sec'} !~ /^\s*$/) {
1.350 albertel 1757: $allowed=&Apache::lonnet::allowed('vgr',$tmp_courseid.
1.372 albertel 1758: '/'.$env{'request.course.sec'});
1.350 albertel 1759: }
1760: if ($allowed) {
1761: ($symb)=&Apache::loncommon::get_env_multiple('form.grade_symb');
1762: $courseid=$tmp_courseid;
1763: ($domain)=&Apache::loncommon::get_env_multiple('form.grade_domain');
1764: ($name)=&Apache::loncommon::get_env_multiple('form.grade_username');
1765: return ($symb,$courseid,$domain,$name,$publicuser);
1766: }
1767: }
1768: if (!$passedsymb) {
1769: $symb=&Apache::lonnet::symbread();
1.134 albertel 1770: } else {
1.350 albertel 1771: $symb=$passedsymb;
1772: }
1.372 albertel 1773: $courseid=$env{'request.course.id'};
1774: $domain=$env{'user.domain'};
1775: $name=$env{'user.name'};
1.350 albertel 1776: if ($name eq 'public' && $domain eq 'public') {
1.372 albertel 1777: if (!defined($env{'form.username'})) {
1778: $env{'form.username'}.=time.rand(10000000);
1.244 albertel 1779: }
1.372 albertel 1780: $name.=$env{'form.username'};
1.123 albertel 1781: }
1.245 albertel 1782: return ($symb,$courseid,$domain,$name,$publicuser);
1.123 albertel 1783: }
1784:
1.1 sakharuk 1785: 1;
1786: __END__
1.68 www 1787:
1788:
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