Annotation of loncom/xml/lonxml.pm, revision 1.453
1.2 sakharuk 1: # The LearningOnline Network with CAPA
1.3 sakharuk 2: # XML Parser Module
1.2 sakharuk 3: #
1.453 ! albertel 4: # $Id: lonxml.pm,v 1.452 2007/08/18 00:08:36 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
1.410 albertel 43: qw(@pwd @outputstack $redirection $import @extlinks $metamode $evaluate %insertlist @namespace $errorcount $warningcount);
1.1 sakharuk 44: use strict;
1.444 albertel 45: use LONCAPA;
1.167 albertel 46: use HTML::LCParser();
1.161 albertel 47: use HTML::TreeBuilder();
48: use HTML::Entities();
49: use Safe();
50: use Safe::Hole();
51: use Math::Cephes();
52: use Math::Random();
53: use Opcode();
1.271 www 54: use POSIX qw(strftime);
1.339 albertel 55: use Time::HiRes qw( gettimeofday tv_interval );
1.393 albertel 56: use Symbol();
1.266 bowersj2 57:
1.72 albertel 58: sub register {
1.141 albertel 59: my ($space,@taglist) = @_;
60: foreach my $temptag (@taglist) {
61: push(@{ $Apache::lonxml::alltags{$temptag} },$space);
1.72 albertel 62: }
63: }
64:
1.141 albertel 65: sub deregister {
66: my ($space,@taglist) = @_;
67: foreach my $temptag (@taglist) {
68: my $tempspace = $Apache::lonxml::alltags{$temptag}[-1];
69: if ($tempspace eq $space) {
70: pop(@{ $Apache::lonxml::alltags{$temptag} });
71: }
72: }
1.142 albertel 73: #&printalltags();
1.141 albertel 74: }
75:
1.46 www 76: use Apache::Constants qw(:common);
1.161 albertel 77: use Apache::lontexconvert();
78: use Apache::style();
79: use Apache::run();
80: use Apache::londefdef();
81: use Apache::scripttag();
1.285 www 82: use Apache::languagetags();
1.161 albertel 83: use Apache::edit();
1.266 bowersj2 84: use Apache::inputtags();
85: use Apache::outputtags();
1.372 albertel 86: use Apache::lonnet;
1.161 albertel 87: use Apache::File();
88: use Apache::loncommon();
1.198 www 89: use Apache::lonfeedback();
1.200 www 90: use Apache::lonmsg();
1.217 matthew 91: use Apache::loncacc();
1.431 www 92: use Apache::lonmaxima();
1.280 www 93: use Apache::lonlocal;
1.79 www 94:
1.72 albertel 95: #================================================== Main subroutine: xmlparse
96: #debugging control, to turn on debugging modify the correct handler
97: $Apache::lonxml::debug=0;
1.206 albertel 98:
99: # keeps count of the number of warnings and errors generated in a parse
100: $warningcount=0;
101: $errorcount=0;
1.72 albertel 102:
103: #path to the directory containing the file currently being processed
104: @pwd=();
105:
106: #these two are used for capturing a subset of the output for later processing,
107: #don't touch them directly use &startredirection and &endredirection
108: @outputstack = ();
109: $redirection = 0;
110:
111: #controls wheter the <import> tag actually does
112: $import = 1;
113: @extlinks=();
114:
115: # meta mode is a bit weird only some output is to be turned off
116: #<output> tag turns metamode off (defined in londefdef.pm)
117: $metamode = 0;
118:
119: # turns on and of run::evaluate actually derefencing var refs
120: $evaluate = 1;
1.7 albertel 121:
1.74 albertel 122: # data structure for eidt mode, determines what tags can go into what other tags
123: %insertlist=();
1.68 www 124:
1.99 albertel 125: # stores the list of active tag namespaces
1.76 albertel 126: @namespace=();
127:
1.448 albertel 128: # stores all Scrit Vars displays for later showing
129: my @script_var_displays=();
130:
1.172 albertel 131: # a pointer the the Apache request object
132: $Apache::lonxml::request='';
133:
1.216 sakharuk 134: # a problem number counter, and check on ether it is used
1.237 sakharuk 135: $Apache::lonxml::counter=1;
1.204 albertel 136: $Apache::lonxml::counter_changed=0;
137:
1.212 albertel 138: #internal check on whether to look at style defs
139: $Apache::lonxml::usestyle=1;
1.260 albertel 140:
141: #locations used to store the parameter string for style substitutions
142: $Apache::lonxml::style_values='';
143: $Apache::lonxml::style_end_values='';
1.212 albertel 144:
1.281 albertel 145: #array of ssi calls that need to occur after we are done parsing
146: @Apache::lonxml::ssi_info=();
147:
1.282 albertel 148: #should we do the postag variable interpolation
149: $Apache::lonxml::post_evaluate=1;
150:
1.295 albertel 151: #a header message to emit in the case of any generated warning or errors
152: $Apache::lonxml::warnings_error_header='';
153:
1.396 foxr 154: # Control whether or not LaTeX symbols should be substituted for their
155: # \ style equivalents...this may be turned off e.g. in an verbatim
156: # environment.
157:
158: $Apache::lonxml::substitute_LaTeX_symbols = 1; # Starts out on.
159:
160: sub enable_LaTeX_substitutions {
161: $Apache::lonxml::substitute_LaTeX_symbols = 1;
162: }
163: sub disable_LaTeX_substitutions {
164: $Apache::lonxml::substitute_LaTeX_symbols = 0;
165: }
166:
1.68 www 167: sub xmlend {
1.335 sakharuk 168: my ($target,$parser)=@_;
1.278 www 169: my $mode='xml';
170: my $status='OPEN';
1.368 albertel 171: if ($Apache::lonhomework::parsing_a_problem ||
172: $Apache::lonhomework::parsing_a_task ) {
1.278 www 173: $mode='problem';
174: $status=$Apache::inputtags::status[-1];
175: }
1.362 matthew 176: my $discussion;
1.379 albertel 177: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
178: ['LONCAPA_INTERNAL_no_discussion']);
1.372 albertel 179: if (! exists($env{'form.LONCAPA_INTERNAL_no_discussion'}) ||
180: $env{'form.LONCAPA_INTERNAL_no_discussion'} ne 'true') {
1.362 matthew 181: $discussion=&Apache::lonfeedback::list_discussion($mode,$status);
182: }
1.334 sakharuk 183: if ($target eq 'tex') {
1.335 sakharuk 184: $discussion.='<tex>\keephidden{ENDOFPROBLEM}\vskip 0.5mm\noindent\makebox[\textwidth/$number_of_columns][b]{\hrulefill}\end{document}</tex>';
1.334 sakharuk 185: &Apache::lonxml::newparser($parser,\$discussion,'');
186: return '';
187: }
1.405 albertel 188:
1.407 albertel 189: return $discussion;
1.119 www 190: }
191:
192: sub tokeninputfield {
1.120 www 193: my $defhost=$Apache::lonnet::perlvar{'lonHostID'};
194: $defhost=~tr/a-z/A-Z/;
1.119 www 195: return (<<ENDINPUTFIELD)
1.226 albertel 196: <script type="text/javascript">
1.120 www 197: function updatetoken() {
198: var comp=new Array;
199: var barcode=unescape(document.tokeninput.barcode.value);
200: comp=barcode.split('*');
201: if (typeof(comp[0])!="undefined") {
202: document.tokeninput.codeone.value=comp[0];
203: }
204: if (typeof(comp[1])!="undefined") {
205: document.tokeninput.codetwo.value=comp[1];
206: }
207: if (typeof(comp[2])!="undefined") {
208: comp[2]=comp[2].toUpperCase();
209: document.tokeninput.codethree.value=comp[2];
210: }
211: document.tokeninput.barcode.value='';
212: }
213: </script>
214: <form method="post" name="tokeninput">
1.119 www 215: <table border="2" bgcolor="#FFFFBB">
216: <tr><th>DocID Checkin</th></tr>
217: <tr><td>
218: <table>
219: <tr>
220: <td>Scan in Barcode</td>
1.120 www 221: <td><input type="text" size="22" name="barcode"
222: onChange="updatetoken()"/></td>
1.119 www 223: </tr>
224: <tr><td><i>or</i> Type in DocID</td>
225: <td>
226: <input type="text" size="5" name="codeone" />
1.120 www 227: <b><font size="+2">*</font></b>
1.119 www 228: <input type="text" size="5" name="codetwo" />
1.120 www 229: <b><font size="+2">*</font></b>
230: <input type="text" size="10" name="codethree" value="$defhost"
231: onChange="this.value=this.value.toUpperCase()" />
1.119 www 232: </td></tr>
233: </table>
234: </td></tr>
235: <tr><td><input type="submit" value="Check in DocID" /></td></tr>
236: </table>
237: </form>
238: ENDINPUTFIELD
1.112 www 239: }
240:
1.116 www 241: sub maketoken {
1.118 www 242: my ($symb,$tuname,$tudom,$tcrsid)=@_;
1.112 www 243: unless ($symb) {
244: $symb=&Apache::lonnet::symbread();
245: }
246: unless ($tuname) {
1.372 albertel 247: $tuname=$env{'user.name'};
248: $tudom=$env{'user.domain'};
249: $tcrsid=$env{'request.course.id'};
1.112 www 250: }
1.116 www 251:
1.118 www 252: return &Apache::lonnet::checkout($symb,$tuname,$tudom,$tcrsid);
253: }
254:
255: sub printtokenheader {
1.133 albertel 256: my ($target,$token,$tsymb,$tcrsid,$tudom,$tuname)=@_;
1.116 www 257: unless ($token) { return ''; }
1.118 www 258:
1.423 albertel 259: my ($symb,$courseid,$domain,$name) = &Apache::lonnet::whichuser();
1.133 albertel 260: unless ($tsymb) {
261: $tsymb=$symb;
1.118 www 262: }
263: unless ($tuname) {
1.133 albertel 264: $tuname=$name;
265: $tudom=$domain;
266: $tcrsid=$courseid;
1.118 www 267: }
1.114 www 268:
1.390 albertel 269: my $plainname=&Apache::loncommon::plainname($tuname,$tudom);
1.114 www 270:
1.112 www 271: if ($target eq 'web') {
1.145 www 272: my %idhash=&Apache::lonnet::idrget($tudom,($tuname));
1.115 www 273: return
1.221 albertel 274: '<img align="right" src="/cgi-bin/barcode.png?encode='.$token.'" />'.
1.284 www 275: &mt('Checked out for').' '.$plainname.
276: '<br />'.&mt('User').': '.$tuname.' at '.$tudom.
277: '<br />'.&mt('ID').': '.$idhash{$tuname}.
278: '<br />'.&mt('CourseID').': '.$tcrsid.
1.372 albertel 279: '<br />'.&mt('Course').': '.$env{'course.'.$tcrsid.'.description'}.
1.284 www 280: '<br />'.&mt('DocID').': '.$token.
281: '<br />'.&mt('Time').': '.&Apache::lonlocal::locallocaltime().'<hr />';
1.112 www 282: } else {
1.121 albertel 283: return $token;
1.112 www 284: }
1.68 www 285: }
286:
1.48 albertel 287: sub printalltags {
288: my $temp;
289: foreach $temp (sort keys %Apache::lonxml::alltags) {
1.141 albertel 290: &Apache::lonxml::debug("$temp -- ".
291: join(',',@{ $Apache::lonxml::alltags{$temp} }));
1.48 albertel 292: }
293: }
1.31 sakharuk 294:
1.3 sakharuk 295: sub xmlparse {
1.172 albertel 296: my ($request,$target,$content_file_string,$safeinit,%style_for_target) = @_;
1.96 albertel 297:
1.172 albertel 298: &setup_globals($request,$target);
1.232 albertel 299: &Apache::inputtags::initialize_inputtags();
1.370 albertel 300: &Apache::bridgetask::initialize_bridgetask();
1.232 albertel 301: &Apache::outputtags::initialize_outputtags();
302: &Apache::edit::initialize_edit();
1.287 albertel 303: &Apache::londefdef::initialize_londefdef();
1.244 albertel 304:
1.178 www 305: #
306: # do we have a course style file?
307: #
308:
1.372 albertel 309: if ($env{'request.course.id'} && $env{'request.state'} ne 'construct') {
1.178 www 310: my $bodytext=
1.372 albertel 311: $env{'course.'.$env{'request.course.id'}.'.default_xml_style'};
1.178 www 312: if ($bodytext) {
1.337 albertel 313: foreach my $file (split(',',$bodytext)) {
314: my $location=&Apache::lonnet::filelocation('',$file);
315: my $styletext=&Apache::lonnet::getfile($location);
316: if ($styletext ne '-1') {
317: %style_for_target = (%style_for_target,
318: &Apache::style::styleparser($target,$styletext));
319: }
320: }
321: }
1.449 albertel 322: } elsif ($env{'construct.style'}
323: && ($env{'request.state'} eq 'construct')) {
1.372 albertel 324: my $location=&Apache::lonnet::filelocation('',$env{'construct.style'});
1.291 sakharuk 325: my $styletext=&Apache::lonnet::getfile($location);
1.449 albertel 326: if ($styletext ne '-1') {
327: %style_for_target = (%style_for_target,
328: &Apache::style::styleparser($target,$styletext));
329: }
1.178 www 330: }
1.255 sakharuk 331: #&printalltags();
1.16 albertel 332: my @pars = ();
1.372 albertel 333: my $pwd=$env{'request.filename'};
1.23 albertel 334: $pwd =~ s:/[^/]*$::;
335: &newparser(\@pars,\$content_file_string,$pwd);
1.24 sakharuk 336:
1.3 sakharuk 337: my $safeeval = new Safe;
1.40 albertel 338: my $safehole = new Safe::Hole;
1.82 ng 339: &init_safespace($target,$safeeval,$safehole,$safeinit);
1.3 sakharuk 340: #-------------------- Redefinition of the target in the case of compound target
341:
342: ($target, my @tenta) = split('&&',$target);
343:
1.150 albertel 344: my @stack = ();
1.3 sakharuk 345: my @parstack = ();
1.358 albertel 346: &initdepth();
347: &init_alarm();
1.101 albertel 348: my $finaloutput = &inner_xmlparse($target,\@stack,\@parstack,\@pars,
1.394 albertel 349: $safeeval,\%style_for_target,1);
1.255 sakharuk 350:
1.425 albertel 351: if (@stack) {
352: &warning("At end of file some tags were still left unclosed, ".
353: '<tt><'.join('></tt>, <tt><',reverse(@stack)).
354: '></tt>');
355: }
1.372 albertel 356: if ($env{'request.uri'}) {
357: &writeallows($env{'request.uri'});
1.125 www 358: }
1.281 albertel 359: &do_registered_ssi();
1.204 albertel 360: if ($Apache::lonxml::counter_changed) { &store_counter() }
1.393 albertel 361:
362: &clean_safespace($safeeval);
363:
1.448 albertel 364: if (@script_var_displays) {
365: $finaloutput .= join('',@script_var_displays);
366: undef(@script_var_displays);
367: }
368:
1.372 albertel 369: if ($env{'form.return_only_error_and_warning_counts'}) {
1.361 www 370: return "$errorcount:$warningcount";
371: }
1.3 sakharuk 372: return $finaloutput;
1.106 www 373: }
374:
1.191 albertel 375: sub latex_special_symbols {
1.272 albertel 376: my ($string,$where)=@_;
1.396 foxr 377: #
378: # If e.g. in verbatim mode, then don't substitute.
379: # but return original string.
380: #
381: if (!($Apache::lonxml::substitute_LaTeX_symbols)) {
382: return $string;
383: }
1.235 sakharuk 384: if ($where eq 'header') {
1.414 foxr 385: $string =~ s/\\/\$\\backslash\$/g; # \ -> $\backslash$ per LaTex line by line pg 10.
1.311 albertel 386: $string =~ s/(\$|%|\{|\})/\\$1/g;
387: $string=&Apache::lonprintout::character_chart($string);
388: # any & or # leftover should be safe to just escape
389: $string=~s/([^\\])\&/$1\\\&/g;
390: $string=~s/([^\\])\#/$1\\\#/g;
1.415 foxr 391: $string =~ s/_/\\_/g; # _ -> \_
392: $string =~ s/\^/\\\^{}/g; # ^ -> \^{}
1.229 sakharuk 393: } else {
1.312 albertel 394: $string=~s/\\/\\ensuremath{\\backslash}/g;
1.367 albertel 395: $string=~s/\\\%|\%/\\\%/g;
396: $string=~s/\\{|{/\\{/g;
397: $string=~s/\\}|}/\\}/g;
1.378 albertel 398: $string=~s/\\ensuremath\\{\\backslash\\}/\\ensuremath{\\backslash}/g;
1.367 albertel 399: $string=~s/\\\$|\$/\\\$/g;
400: $string=~s/\\\_|\_/\\\_/g;
1.313 albertel 401: $string=~s/([^\\]|^)(\~|\^)/$1\\$2\\strut /g;
1.310 sakharuk 402: $string=~s/(>|<)/\\ensuremath\{$1\}/g; #more or less
1.311 albertel 403: $string=&Apache::lonprintout::character_chart($string);
404: # any & or # leftover should be safe to just escape
1.367 albertel 405: $string=~s/\\\&|\&/\\\&/g;
406: $string=~s/\\\#|\#/\\\#/g;
1.332 sakharuk 407: $string=~s/\|/\$\\mid\$/g;
1.310 sakharuk 408: #single { or } How to escape?
1.229 sakharuk 409: }
1.272 albertel 410: return $string;
1.188 sakharuk 411: }
412:
1.101 albertel 413: sub inner_xmlparse {
1.394 albertel 414: my ($target,$stack,$parstack,$pars,$safeeval,$style_for_target,$start)=@_;
1.101 albertel 415: my $finaloutput = '';
416: my $result;
417: my $token;
1.258 albertel 418: my $dontpop=0;
1.389 albertel 419: my $startredirection = $Apache::lonxml::redirection;
1.101 albertel 420: while ( $#$pars > -1 ) {
421: while ($token = $$pars['-1']->get_token) {
1.261 albertel 422: if (($token->[0] eq 'T') || ($token->[0] eq 'C') ) {
1.101 albertel 423: if ($metamode<1) {
1.190 albertel 424: my $text=$token->[1];
1.193 albertel 425: if ($token->[0] eq 'C' && $target eq 'tex') {
1.239 sakharuk 426: $text = '';
427: # $text = '%'.$text."\n";
1.182 sakharuk 428: }
1.190 albertel 429: $result.=$text;
1.101 albertel 430: }
1.261 albertel 431: } elsif (($token->[0] eq 'D')) {
432: if ($metamode<1 && $target eq 'web') {
433: my $text=$token->[1];
434: $result.=$text;
435: }
1.101 albertel 436: } elsif ($token->[0] eq 'PI') {
1.261 albertel 437: if ($metamode<1 && $target eq 'web') {
1.101 albertel 438: $result=$token->[2];
439: }
440: } elsif ($token->[0] eq 'S') {
1.140 albertel 441: # add tag to stack
1.101 albertel 442: push (@$stack,$token->[1]);
443: # add parameters list to another stack
444: push (@$parstack,&parstring($token));
1.140 albertel 445: &increasedepth($token);
1.212 albertel 446: if ($Apache::lonxml::usestyle &&
447: exists($$style_for_target{$token->[1]})) {
448: $Apache::lonxml::usestyle=0;
449: my $string=$$style_for_target{$token->[1]}.
450: '<LONCAPA_INTERNAL_TURN_STYLE_ON />';
451: &Apache::lonxml::newparser($pars,\$string);
1.257 albertel 452: $Apache::lonxml::style_values=$$parstack[-1];
1.259 albertel 453: $Apache::lonxml::style_end_values=$$parstack[-1];
1.101 albertel 454: } else {
455: $result = &callsub("start_$token->[1]", $target, $token, $stack,
456: $parstack, $pars, $safeeval, $style_for_target);
1.140 albertel 457: }
1.101 albertel 458: } elsif ($token->[0] eq 'E') {
1.212 albertel 459: if ($Apache::lonxml::usestyle &&
460: exists($$style_for_target{'/'."$token->[1]"})) {
461: $Apache::lonxml::usestyle=0;
462: my $string=$$style_for_target{'/'.$token->[1]}.
1.258 albertel 463: '<LONCAPA_INTERNAL_TURN_STYLE_ON end="'.$token->[1].'" />';
1.212 albertel 464: &Apache::lonxml::newparser($pars,\$string);
1.259 albertel 465: $Apache::lonxml::style_values=$Apache::lonxml::style_end_values;
466: $Apache::lonxml::style_end_values='';
1.258 albertel 467: $dontpop=1;
1.101 albertel 468: } else {
1.258 albertel 469: #clear out any tags that didn't end
470: while ($token->[1] ne $$stack['-1'] && ($#$stack > -1)) {
471: my $lasttag=$$stack[-1];
1.317 albertel 472: if ($token->[1] =~ /^\Q$lasttag\E$/i) {
1.258 albertel 473: &Apache::lonxml::warning('Using tag </'.$token->[1].'> on line '.$token->[3].' as end tag to <'.$$stack[-1].'>');
474: last;
475: } else {
476: &Apache::lonxml::warning('Found tag </'.$token->[1].'> on line '.$token->[3].' when looking for </'.$$stack[-1].'> in file');
477: &end_tag($stack,$parstack,$token);
478: }
479: }
480: $result = &callsub("end_$token->[1]", $target, $token, $stack,
481: $parstack, $pars,$safeeval, $style_for_target);
1.101 albertel 482: }
483: } else {
484: &Apache::lonxml::error("Unknown token event :$token->[0]:$token->[1]:");
485: }
486: #evaluate variable refs in result
1.282 albertel 487: if ($Apache::lonxml::post_evaluate &&$result ne "") {
1.257 albertel 488: my $extras;
489: if (!$Apache::lonxml::usestyle) {
490: $extras=$Apache::lonxml::style_values;
491: }
1.101 albertel 492: if ( $#$parstack > -1 ) {
1.257 albertel 493: $result=&Apache::run::evaluate($result,$safeeval,$extras.$$parstack[-1]);
1.101 albertel 494: } else {
1.257 albertel 495: $result= &Apache::run::evaluate($result,$safeeval,$extras);
1.101 albertel 496: }
1.163 albertel 497: }
1.282 albertel 498: $Apache::lonxml::post_evaluate=1;
499:
1.190 albertel 500: if (($token->[0] eq 'T') || ($token->[0] eq 'C') || ($token->[0] eq 'D') ) {
1.249 albertel 501: #Style file definitions should be correct
1.250 albertel 502: if ($target eq 'tex' && ($Apache::lonxml::usestyle)) {
1.311 albertel 503: $result=&latex_special_symbols($result);
1.249 albertel 504: }
1.190 albertel 505: }
506:
1.169 albertel 507: if ($Apache::lonxml::redirection) {
508: $Apache::lonxml::outputstack['-1'] .= $result;
509: } else {
510: $finaloutput.=$result;
511: }
512: $result = '';
513:
1.258 albertel 514: if ($token->[0] eq 'E' && !$dontpop) {
1.101 albertel 515: &end_tag($stack,$parstack,$token);
516: }
1.258 albertel 517: $dontpop=0;
1.224 albertel 518: }
1.212 albertel 519: if ($#$pars > -1) {
520: pop @$pars;
521: pop @Apache::lonxml::pwd;
522: }
1.101 albertel 523: }
524:
525: # if ($target eq 'meta') {
526: # $finaloutput.=&endredirection;
527: # }
528:
1.394 albertel 529: if ( $start && $target eq 'grade') { &endredirection(); }
1.389 albertel 530: if ( $Apache::lonxml::redirection > $startredirection) {
531: while ($Apache::lonxml::redirection > $startredirection) {
532: $finaloutput .= &endredirection();
1.387 albertel 533: }
534: }
1.101 albertel 535: if (($ENV{'QUERY_STRING'}) && ($target eq 'web')) {
536: $finaloutput=&afterburn($finaloutput);
1.216 sakharuk 537: }
1.101 albertel 538: return $finaloutput;
539: }
1.67 www 540:
1.318 matthew 541: ##
542: ## Looks to see if there is a subroutine defined for this tag. If so, call it,
543: ## otherwise do not call it as we do not know what it is.
544: ##
1.7 albertel 545: sub callsub {
1.84 albertel 546: my ($sub,$target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.7 albertel 547: my $currentstring='';
1.72 albertel 548: my $nodefault;
1.7 albertel 549: {
1.59 albertel 550: my $sub1;
1.7 albertel 551: no strict 'refs';
1.68 www 552: my $tag=$token->[1];
1.236 www 553: # get utterly rid of extended html tags
554: if ($tag=~/^x\-/i) { return ''; }
1.141 albertel 555: my $space=$Apache::lonxml::alltags{$tag}[-1];
1.68 www 556: if (!$space) {
1.141 albertel 557: $tag=~tr/A-Z/a-z/;
1.68 www 558: $sub=~tr/A-Z/a-z/;
1.141 albertel 559: $space=$Apache::lonxml::alltags{$tag}[-1]
1.68 www 560: }
1.97 albertel 561:
562: my $deleted=0;
563: if (($token->[0] eq 'S') && ($target eq 'modified')) {
564: $deleted=&Apache::edit::handle_delete($space,$target,$token,$tagstack,
565: $parstack,$parser,$safeeval,
566: $style);
567: }
568: if (!$deleted) {
569: if ($space) {
1.220 albertel 570: #&Apache::lonxml::debug("Calling sub $sub in $space $metamode");
1.97 albertel 571: $sub1="$space\:\:$sub";
572: ($currentstring,$nodefault) = &$sub1($target,$token,$tagstack,
573: $parstack,$parser,$safeeval,
574: $style);
575: } else {
1.318 matthew 576: if ($target eq 'tex') {
577: # throw away tag name
578: return '';
579: }
1.220 albertel 580: #&Apache::lonxml::debug("NOT Calling sub $sub in $space $metamode");
1.97 albertel 581: if ($metamode <1) {
582: if (defined($token->[4]) && ($metamode < 1)) {
583: $currentstring = $token->[4];
584: } else {
585: $currentstring = $token->[2];
586: }
1.62 sakharuk 587: }
1.7 albertel 588: }
1.97 albertel 589: # &Apache::lonxml::debug("nodefalt:$nodefault:");
590: if ($currentstring eq '' && $nodefault eq '') {
591: if ($target eq 'edit') {
1.220 albertel 592: #&Apache::lonxml::debug("doing default edit for $token->[1]");
1.97 albertel 593: if ($token->[0] eq 'S') {
594: $currentstring = &Apache::edit::tag_start($target,$token);
595: } elsif ($token->[0] eq 'E') {
596: $currentstring = &Apache::edit::tag_end($target,$token);
597: }
1.441 albertel 598: }
599: }
600: if ($target eq 'modified' && $nodefault eq '') {
601: if ($currentstring eq '') {
602: if ($token->[0] eq 'S') {
603: $currentstring = $token->[4];
604: } elsif ($token->[0] eq 'E') {
605: $currentstring = $token->[2];
606: } else {
607: $currentstring = $token->[2];
608: }
609: }
1.97 albertel 610: if ($token->[0] eq 'S') {
1.447 albertel 611: $currentstring.=&Apache::edit::handle_insert();
1.210 www 612: } elsif ($token->[0] eq 'E') {
1.447 albertel 613: $currentstring.=&Apache::edit::handle_insertafter($token->[1]);
1.97 albertel 614: }
1.72 albertel 615: }
1.7 albertel 616: }
617: use strict 'refs';
618: }
619: return $currentstring;
1.82 ng 620: }
621:
1.96 albertel 622: sub setup_globals {
1.172 albertel 623: my ($request,$target)=@_;
624: $Apache::lonxml::request=$request;
1.205 www 625: $errorcount=0;
626: $warningcount=0;
1.207 albertel 627: $Apache::lonxml::default_homework_loaded=0;
1.212 albertel 628: $Apache::lonxml::usestyle=1;
1.204 albertel 629: &init_counter();
1.101 albertel 630: @Apache::lonxml::pwd=();
1.124 albertel 631: @Apache::lonxml::extlinks=();
1.448 albertel 632: @script_var_displays=();
1.281 albertel 633: @Apache::lonxml::ssi_info=();
1.282 albertel 634: $Apache::lonxml::post_evaluate=1;
1.295 albertel 635: $Apache::lonxml::warnings_error_header='';
1.397 albertel 636: $Apache::lonxml::substitute_LaTeX_symbols = 1;
1.96 albertel 637: if ($target eq 'meta') {
638: $Apache::lonxml::redirection = 0;
639: $Apache::lonxml::metamode = 1;
640: $Apache::lonxml::evaluate = 1;
641: $Apache::lonxml::import = 0;
1.129 albertel 642: } elsif ($target eq 'answer') {
643: $Apache::lonxml::redirection = 0;
644: $Apache::lonxml::metamode = 1;
645: $Apache::lonxml::evaluate = 1;
646: $Apache::lonxml::import = 1;
1.96 albertel 647: } elsif ($target eq 'grade') {
1.387 albertel 648: &startredirection(); #ended in inner_xmlparse on exit
1.96 albertel 649: $Apache::lonxml::metamode = 0;
650: $Apache::lonxml::evaluate = 1;
651: $Apache::lonxml::import = 1;
652: } elsif ($target eq 'modified') {
653: $Apache::lonxml::redirection = 0;
654: $Apache::lonxml::metamode = 0;
655: $Apache::lonxml::evaluate = 0;
656: $Apache::lonxml::import = 0;
657: } elsif ($target eq 'edit') {
658: $Apache::lonxml::redirection = 0;
659: $Apache::lonxml::metamode = 0;
660: $Apache::lonxml::evaluate = 0;
661: $Apache::lonxml::import = 0;
1.163 albertel 662: } elsif ($target eq 'analyze') {
663: $Apache::lonxml::redirection = 0;
664: $Apache::lonxml::metamode = 0;
665: $Apache::lonxml::evaluate = 1;
666: $Apache::lonxml::import = 1;
1.96 albertel 667: } else {
668: $Apache::lonxml::redirection = 0;
669: $Apache::lonxml::metamode = 0;
670: $Apache::lonxml::evaluate = 1;
671: $Apache::lonxml::import = 1;
672: }
673: }
674:
1.82 ng 675: sub init_safespace {
676: my ($target,$safeeval,$safehole,$safeinit) = @_;
1.393 albertel 677: $safeeval->deny_only(':dangerous');
678: $safeeval->reval('use Math::Complex;');
1.383 albertel 679: $safeeval->permit_only(":default");
1.82 ng 680: $safeeval->permit("entereval");
681: $safeeval->permit(":base_math");
682: $safeeval->permit("sort");
1.286 albertel 683: $safeeval->permit("time");
1.371 albertel 684: $safeeval->deny("rand");
685: $safeeval->deny("srand");
1.82 ng 686: $safeeval->deny(":base_io");
1.102 albertel 687: $safehole->wrap(\&Apache::scripttag::xmlparse,$safeeval,'&xmlparse');
1.251 albertel 688: $safehole->wrap(\&Apache::outputtags::multipart,$safeeval,'&multipart');
1.82 ng 689: $safehole->wrap(\&Apache::lonnet::EXT,$safeeval,'&EXT');
1.324 albertel 690: $safehole->wrap(\&Apache::chemresponse::chem_standard_order,$safeeval,
691: '&chem_standard_order');
1.369 albertel 692: $safehole->wrap(\&Apache::response::check_status,$safeeval,'&check_status');
1.324 albertel 693:
1.431 www 694: $safehole->wrap(\&Apache::lonmaxima::maxima_eval,$safeeval,'&maxima_eval');
1.432 www 695: $safehole->wrap(\&Apache::lonmaxima::maxima_check,$safeeval,'&maxima_check');
1.433 albertel 696: $safehole->wrap(\&Apache::lonmaxima::maxima_cas_formula_fix,$safeeval,
697: '&maxima_cas_formula_fix');
698:
699: $safehole->wrap(\&Apache::caparesponse::capa_formula_fix,$safeeval,
700: '&capa_formula_fix');
1.431 www 701:
1.82 ng 702: $safehole->wrap(\&Math::Cephes::asin,$safeeval,'&asin');
703: $safehole->wrap(\&Math::Cephes::acos,$safeeval,'&acos');
704: $safehole->wrap(\&Math::Cephes::atan,$safeeval,'&atan');
705: $safehole->wrap(\&Math::Cephes::sinh,$safeeval,'&sinh');
706: $safehole->wrap(\&Math::Cephes::cosh,$safeeval,'&cosh');
707: $safehole->wrap(\&Math::Cephes::tanh,$safeeval,'&tanh');
708: $safehole->wrap(\&Math::Cephes::asinh,$safeeval,'&asinh');
709: $safehole->wrap(\&Math::Cephes::acosh,$safeeval,'&acosh');
710: $safehole->wrap(\&Math::Cephes::atanh,$safeeval,'&atanh');
711: $safehole->wrap(\&Math::Cephes::erf,$safeeval,'&erf');
712: $safehole->wrap(\&Math::Cephes::erfc,$safeeval,'&erfc');
713: $safehole->wrap(\&Math::Cephes::j0,$safeeval,'&j0');
714: $safehole->wrap(\&Math::Cephes::j1,$safeeval,'&j1');
715: $safehole->wrap(\&Math::Cephes::jn,$safeeval,'&jn');
716: $safehole->wrap(\&Math::Cephes::jv,$safeeval,'&jv');
717: $safehole->wrap(\&Math::Cephes::y0,$safeeval,'&y0');
718: $safehole->wrap(\&Math::Cephes::y1,$safeeval,'&y1');
719: $safehole->wrap(\&Math::Cephes::yn,$safeeval,'&yn');
720: $safehole->wrap(\&Math::Cephes::yv,$safeeval,'&yv');
1.215 albertel 721:
722: $safehole->wrap(\&Math::Cephes::bdtr ,$safeeval,'&bdtr' );
723: $safehole->wrap(\&Math::Cephes::bdtrc ,$safeeval,'&bdtrc' );
724: $safehole->wrap(\&Math::Cephes::bdtri ,$safeeval,'&bdtri' );
725: $safehole->wrap(\&Math::Cephes::btdtr ,$safeeval,'&btdtr' );
726: $safehole->wrap(\&Math::Cephes::chdtr ,$safeeval,'&chdtr' );
727: $safehole->wrap(\&Math::Cephes::chdtrc,$safeeval,'&chdtrc');
728: $safehole->wrap(\&Math::Cephes::chdtri,$safeeval,'&chdtri');
729: $safehole->wrap(\&Math::Cephes::fdtr ,$safeeval,'&fdtr' );
730: $safehole->wrap(\&Math::Cephes::fdtrc ,$safeeval,'&fdtrc' );
731: $safehole->wrap(\&Math::Cephes::fdtri ,$safeeval,'&fdtri' );
732: $safehole->wrap(\&Math::Cephes::gdtr ,$safeeval,'&gdtr' );
733: $safehole->wrap(\&Math::Cephes::gdtrc ,$safeeval,'&gdtrc' );
734: $safehole->wrap(\&Math::Cephes::nbdtr ,$safeeval,'&nbdtr' );
735: $safehole->wrap(\&Math::Cephes::nbdtrc,$safeeval,'&nbdtrc');
736: $safehole->wrap(\&Math::Cephes::nbdtri,$safeeval,'&nbdtri');
737: $safehole->wrap(\&Math::Cephes::ndtr ,$safeeval,'&ndtr' );
738: $safehole->wrap(\&Math::Cephes::ndtri ,$safeeval,'&ndtri' );
739: $safehole->wrap(\&Math::Cephes::pdtr ,$safeeval,'&pdtr' );
740: $safehole->wrap(\&Math::Cephes::pdtrc ,$safeeval,'&pdtrc' );
741: $safehole->wrap(\&Math::Cephes::pdtri ,$safeeval,'&pdtri' );
742: $safehole->wrap(\&Math::Cephes::stdtr ,$safeeval,'&stdtr' );
743: $safehole->wrap(\&Math::Cephes::stdtri,$safeeval,'&stdtri');
744:
1.383 albertel 745: $safehole->wrap(\&Math::Cephes::Matrix::mat,$safeeval,'&mat');
746: $safehole->wrap(\&Math::Cephes::Matrix::new,$safeeval,
747: '&Math::Cephes::Matrix::new');
748: $safehole->wrap(\&Math::Cephes::Matrix::coef,$safeeval,
749: '&Math::Cephes::Matrix::coef');
750: $safehole->wrap(\&Math::Cephes::Matrix::clr,$safeeval,
751: '&Math::Cephes::Matrix::clr');
752: $safehole->wrap(\&Math::Cephes::Matrix::add,$safeeval,
753: '&Math::Cephes::Matrix::add');
754: $safehole->wrap(\&Math::Cephes::Matrix::sub,$safeeval,
755: '&Math::Cephes::Matrix::sub');
756: $safehole->wrap(\&Math::Cephes::Matrix::mul,$safeeval,
757: '&Math::Cephes::Matrix::mul');
758: $safehole->wrap(\&Math::Cephes::Matrix::div,$safeeval,
759: '&Math::Cephes::Matrix::div');
760: $safehole->wrap(\&Math::Cephes::Matrix::inv,$safeeval,
761: '&Math::Cephes::Matrix::inv');
762: $safehole->wrap(\&Math::Cephes::Matrix::transp,$safeeval,
763: '&Math::Cephes::Matrix::transp');
764: $safehole->wrap(\&Math::Cephes::Matrix::simq,$safeeval,
765: '&Math::Cephes::Matrix::simq');
766: $safehole->wrap(\&Math::Cephes::Matrix::mat_to_vec,$safeeval,
767: '&Math::Cephes::Matrix::mat_to_vec');
768: $safehole->wrap(\&Math::Cephes::Matrix::vec_to_mat,$safeeval,
769: '&Math::Cephes::Matrix::vec_to_mat');
770: $safehole->wrap(\&Math::Cephes::Matrix::check,$safeeval,
771: '&Math::Cephes::Matrix::check');
772: $safehole->wrap(\&Math::Cephes::Matrix::check,$safeeval,
773: '&Math::Cephes::Matrix::check');
774:
1.215 albertel 775: # $safehole->wrap(\&Math::Cephes::new_fract,$safeeval,'&new_fract');
776: # $safehole->wrap(\&Math::Cephes::radd,$safeeval,'&radd');
777: # $safehole->wrap(\&Math::Cephes::rsub,$safeeval,'&rsub');
778: # $safehole->wrap(\&Math::Cephes::rmul,$safeeval,'&rmul');
779: # $safehole->wrap(\&Math::Cephes::rdiv,$safeeval,'&rdiv');
780: # $safehole->wrap(\&Math::Cephes::euclid,$safeeval,'&euclid');
781:
1.91 ng 782: $safehole->wrap(\&Math::Random::random_beta,$safeeval,'&math_random_beta');
783: $safehole->wrap(\&Math::Random::random_chi_square,$safeeval,'&math_random_chi_square');
784: $safehole->wrap(\&Math::Random::random_exponential,$safeeval,'&math_random_exponential');
785: $safehole->wrap(\&Math::Random::random_f,$safeeval,'&math_random_f');
786: $safehole->wrap(\&Math::Random::random_gamma,$safeeval,'&math_random_gamma');
787: $safehole->wrap(\&Math::Random::random_multivariate_normal,$safeeval,'&math_random_multivariate_normal');
788: $safehole->wrap(\&Math::Random::random_multinomial,$safeeval,'&math_random_multinomial');
789: $safehole->wrap(\&Math::Random::random_noncentral_chi_square,$safeeval,'&math_random_noncentral_chi_square');
790: $safehole->wrap(\&Math::Random::random_noncentral_f,$safeeval,'&math_random_noncentral_f');
791: $safehole->wrap(\&Math::Random::random_normal,$safeeval,'&math_random_normal');
792: $safehole->wrap(\&Math::Random::random_permutation,$safeeval,'&math_random_permutation');
1.93 ng 793: $safehole->wrap(\&Math::Random::random_permuted_index,$safeeval,'&math_random_permuted_index');
1.91 ng 794: $safehole->wrap(\&Math::Random::random_uniform,$safeeval,'&math_random_uniform');
795: $safehole->wrap(\&Math::Random::random_poisson,$safeeval,'&math_random_poisson');
796: $safehole->wrap(\&Math::Random::random_uniform_integer,$safeeval,'&math_random_uniform_integer');
797: $safehole->wrap(\&Math::Random::random_negative_binomial,$safeeval,'&math_random_negative_binomial');
798: $safehole->wrap(\&Math::Random::random_binomial,$safeeval,'&math_random_binomial');
799: $safehole->wrap(\&Math::Random::random_seed_from_phrase,$safeeval,'&random_seed_from_phrase');
800: $safehole->wrap(\&Math::Random::random_set_seed_from_phrase,$safeeval,'&random_set_seed_from_phrase');
801: $safehole->wrap(\&Math::Random::random_get_seed,$safeeval,'&random_get_seed');
802: $safehole->wrap(\&Math::Random::random_set_seed,$safeeval,'&random_set_seed');
1.305 albertel 803: $safehole->wrap(\&Apache::lonxml::error,$safeeval,'&LONCAPA_INTERNAL_ERROR');
1.311 albertel 804: $safehole->wrap(\&Apache::lonxml::debug,$safeeval,'&LONCAPA_INTERNAL_DEBUG');
1.420 albertel 805: $safehole->wrap(\&Apache::lonnet::logthis,$safeeval,'&LONCAPA_INTERNAL_LOGTHIS');
806: $safehole->wrap(\&Apache::inputtags::finalizeawards,$safeeval,'&LONCAPA_INTERNAL_FINALIZEAWARDS');
1.322 albertel 807: $safehole->wrap(\&Apache::caparesponse::get_sigrange,$safeeval,'&LONCAPA_INTERNAL_get_sigrange');
1.430 albertel 808: # use Data::Dumper;
809: # $safehole->wrap(\&Data::Dumper::Dumper,$safeeval,'&LONCAPA_INTERNAL_Dumper');
1.82 ng 810: #need to inspect this class of ops
811: # $safeeval->deny(":base_orig");
1.331 albertel 812: $safeeval->permit("require");
1.91 ng 813: $safeinit .= ';$external::target="'.$target.'";';
1.82 ng 814: &Apache::run::run($safeinit,$safeeval);
1.373 albertel 815: &initialize_rndseed($safeeval);
816: }
1.303 albertel 817:
1.393 albertel 818: sub clean_safespace {
819: my ($safeeval) = @_;
820: delete_package_recurse($safeeval->{Root});
821: }
822:
823: sub delete_package_recurse {
824: my ($package) = @_;
825: my @subp;
826: {
827: no strict 'refs';
828: while (my ($key,$val) = each(%{*{"$package\::"}})) {
829: if (!defined($val)) { next; }
830: local (*ENTRY) = $val;
831: if (defined *ENTRY{HASH} && $key =~ /::$/ &&
832: $key ne "main::" && $key ne "<none>::")
833: {
834: my ($p) = $package ne "main" ? "$package\::" : "";
835: ($p .= $key) =~ s/::$//;
836: push(@subp,$p);
837: }
838: }
839: }
840: foreach my $p (@subp) {
841: delete_package_recurse($p);
842: }
843: Symbol::delete_package($package);
844: }
845:
1.373 albertel 846: sub initialize_rndseed {
847: my ($safeeval)=@_;
848: my $rndseed;
1.423 albertel 849: my ($symb,$courseid,$domain,$name) = &Apache::lonnet::whichuser();
1.373 albertel 850: $rndseed=&Apache::lonnet::rndseed($symb,$courseid,$domain,$name);
851: my $safeinit = '$external::randomseed="'.$rndseed.'";';
852: &Apache::lonxml::debug("Setting rndseed to $rndseed");
853: &Apache::run::run($safeinit,$safeeval);
1.207 albertel 854: }
855:
856: sub default_homework_load {
857: my ($safeeval)=@_;
858: &Apache::lonxml::debug('Loading default_homework');
859: my $default=&Apache::lonnet::getfile('/home/httpd/html/res/adm/includes/default_homework.lcpm');
1.241 albertel 860: if ($default eq -1) {
1.207 albertel 861: &Apache::lonxml::error("<b>Unable to find <i>default_homework.lcpm</i></b>");
862: } else {
863: &Apache::run::run($default,$safeeval);
864: $Apache::lonxml::default_homework_loaded=1;
865: }
1.17 albertel 866: }
867:
1.358 albertel 868: {
869: my $alarm_depth;
870: sub init_alarm {
871: alarm(0);
872: $alarm_depth=0;
873: }
874:
875: sub start_alarm {
876: if ($alarm_depth<1) {
877: my $old=alarm($Apache::lonnet::perlvar{'lonScriptTimeout'});
878: if ($old) {
879: &Apache::lonxml::error("Cancelled an alarm of $old, this shouldn't occur.");
880: }
881: }
882: $alarm_depth++;
883: }
884:
885: sub end_alarm {
886: $alarm_depth--;
887: if ($alarm_depth<1) { alarm(0); }
888: }
889: }
1.328 albertel 890: my $metamode_was;
1.55 albertel 891: sub startredirection {
1.328 albertel 892: if (!$Apache::lonxml::redirection) {
893: $metamode_was=$Apache::lonxml::metamode;
894: }
895: $Apache::lonxml::metamode=0;
896: $Apache::lonxml::redirection++;
897: push (@Apache::lonxml::outputstack, '');
1.55 albertel 898: }
899:
900: sub endredirection {
1.328 albertel 901: if (!$Apache::lonxml::redirection) {
1.380 www 902: &Apache::lonxml::error("Endredirection was called before a startredirection, perhaps you have unbalanced tags. Some debugging information:".join ":",caller);
1.328 albertel 903: return '';
904: }
905: $Apache::lonxml::redirection--;
906: if (!$Apache::lonxml::redirection) {
907: $Apache::lonxml::metamode=$metamode_was;
908: }
909: pop @Apache::lonxml::outputstack;
1.97 albertel 910: }
911:
912: sub end_tag {
913: my ($tagstack,$parstack,$token)=@_;
914: pop(@$tagstack);
915: pop(@$parstack);
916: &decreasedepth($token);
1.55 albertel 917: }
918:
1.17 albertel 919: sub initdepth {
920: @Apache::lonxml::depthcounter=();
1.439 albertel 921: undef($Apache::lonxml::last_depth_count);
1.17 albertel 922: }
923:
1.438 albertel 924:
1.339 albertel 925: my @timers;
926: my $lasttime;
1.438 albertel 927: # @Apache::lonxml::depthcounter -> count of tags that exist so
928: # far at each level
1.439 albertel 929: # $Apache::lonxml::last_depth_count -> when ascending, need to
930: # remember the count for the level below the current level (for
931: # example going from 1_2 -> 1 -> 1_3 need to remember the 2 )
1.438 albertel 932:
1.17 albertel 933: sub increasedepth {
1.19 albertel 934: my ($token) = @_;
1.439 albertel 935: push(@Apache::lonxml::depthcounter,$Apache::lonxml::last_depth_count+1);
936: undef($Apache::lonxml::last_depth_count);
1.340 albertel 937: my $time;
938: if ($Apache::lonxml::debug eq "1") {
939: push(@timers,[&gettimeofday()]);
940: $time=&tv_interval($lasttime);
941: $lasttime=[&gettimeofday()];
942: }
1.439 albertel 943: my $spacing=' 'x($#Apache::lonxml::depthcounter);
1.438 albertel 944: $Apache::lonxml::curdepth=join('_',@Apache::lonxml::depthcounter);
1.439 albertel 945: # &Apache::lonxml::debug("s$spacing$Apache::lonxml::depth : $Apache::lonxml::olddepth : $Apache::lonxml::curdepth : $token->[1] : $time");
1.54 albertel 946: #print "<br />s $Apache::lonxml::depth : $Apache::lonxml::olddepth : $curdepth : $token->[1]\n";
1.17 albertel 947: }
948:
949: sub decreasedepth {
1.19 albertel 950: my ($token) = @_;
1.439 albertel 951: if ( $#Apache::lonxml::depthcounter == -1) {
952: &Apache::lonxml::warning(&mt("Missing tags, unable to properly run file."));
1.43 albertel 953: }
1.439 albertel 954: $Apache::lonxml::last_depth_count = pop(@Apache::lonxml::depthcounter);
955:
1.340 albertel 956: my ($timer,$time);
957: if ($Apache::lonxml::debug eq "1") {
958: $timer=pop(@timers);
959: $time=&tv_interval($lasttime);
960: $lasttime=[&gettimeofday()];
961: }
1.439 albertel 962: my $spacing=' 'x($#Apache::lonxml::depthcounter);
963: $Apache::lonxml::curdepth = join('_',@Apache::lonxml::depthcounter);
964: # &Apache::lonxml::debug("e$spacing$Apache::lonxml::depth : $Apache::lonxml::olddepth : $Apache::lonxml::curdepth : $token->[1] : $time : ".&tv_interval($timer));
1.54 albertel 965: #print "<br />e $Apache::lonxml::depth : $Apache::lonxml::olddepth : $token->[1] : $curdepth\n";
1.1 sakharuk 966: }
1.19 albertel 967:
1.399 albertel 968: sub get_id {
969: my ($parstack,$safeeval)=@_;
970: my $id= &Apache::lonxml::get_param('id',$parstack,$safeeval);
1.449 albertel 971: if ($env{'request.state'} eq 'construct' && $id =~ /([._]|[^\w\d\s[:punct:]])/) {
972: &error(&mt("ID "[_1]" contains invalid characters, IDs are only allowed to contain letters, numbers, spaces and -",'<tt>'.$id.'</tt>'));
1.399 albertel 973: }
974: if ($id =~ /^\s*$/) { $id = $Apache::lonxml::curdepth; }
975: return $id;
976: }
977:
1.180 albertel 978: sub get_all_text_unbalanced {
1.190 albertel 979: #there is a copy of this in lonpublisher.pm
1.326 albertel 980: my($tag,$pars)= @_;
981: my $token;
982: my $result='';
983: $tag='<'.$tag.'>';
984: while ($token = $$pars[-1]->get_token) {
985: if (($token->[0] eq 'T')||($token->[0] eq 'C')||($token->[0] eq 'D')) {
1.386 albertel 986: if ($token->[0] eq 'T' && $token->[2]) {
1.382 albertel 987: $result.='<![CDATA['.$token->[1].']]>';
988: } else {
989: $result.=$token->[1];
990: }
1.326 albertel 991: } elsif ($token->[0] eq 'PI') {
992: $result.=$token->[2];
993: } elsif ($token->[0] eq 'S') {
994: $result.=$token->[4];
995: } elsif ($token->[0] eq 'E') {
996: $result.=$token->[2];
997: }
998: if ($result =~ /\Q$tag\E/is) {
999: ($result,my $redo)=$result =~ /(.*)\Q$tag\E(.*)/is;
1000: #&Apache::lonxml::debug('Got a winner with leftovers ::'.$2);
1001: #&Apache::lonxml::debug('Result is :'.$1);
1002: $redo=$tag.$redo;
1003: &Apache::lonxml::newparser($pars,\$redo);
1004: last;
1005: }
1006: }
1007: return $result
1.204 albertel 1008: }
1009:
1.447 albertel 1010: =pod
1011:
1012: For bubble grading mode and exam bubble printing mode, the tracking of
1013: the current 'bubble line number' is stored in the %env element
1014: 'form.counter', and is modifed and handled by the following routines.
1015:
1016: The value of it is stored in $Apache:lonxml::counter when live and
1017: stored back to env after done.
1018:
1019: =item &increment_counter($increment);
1020:
1021: Increments the internal counter environment variable a specified amount
1022:
1023: Optional Arguments:
1024: $increment - amount to increment by (defaults to 1)
1025:
1026: =cut
1027:
1.204 albertel 1028: sub increment_counter {
1.247 albertel 1029: my ($increment) = @_;
1.289 sakharuk 1030: if (defined($increment) && $increment gt 0) {
1031: $Apache::lonxml::counter+=$increment;
1032: } else {
1033: $Apache::lonxml::counter++;
1.247 albertel 1034: }
1.289 sakharuk 1035: $Apache::lonxml::counter_changed=1;
1.204 albertel 1036: }
1037:
1.447 albertel 1038: =pod
1039:
1040: =item &init_counter($increment);
1041:
1042: Initialize the internal counter environment variable
1043:
1044: =cut
1045:
1.204 albertel 1046: sub init_counter {
1.391 albertel 1047: if ($env{'request.state'} eq 'construct') {
1048: $Apache::lonxml::counter=1;
1049: $Apache::lonxml::counter_changed=1;
1050: } elsif (defined($env{'form.counter'})) {
1.372 albertel 1051: $Apache::lonxml::counter=$env{'form.counter'};
1.247 albertel 1052: $Apache::lonxml::counter_changed=0;
1.237 sakharuk 1053: } else {
1.204 albertel 1054: $Apache::lonxml::counter=1;
1.247 albertel 1055: $Apache::lonxml::counter_changed=1;
1.204 albertel 1056: }
1057: }
1058:
1059: sub store_counter {
1060: &Apache::lonnet::appenv(('form.counter' => $Apache::lonxml::counter));
1.401 albertel 1061: $Apache::lonxml::counter_changed=0;
1.204 albertel 1062: return '';
1.180 albertel 1063: }
1064:
1.398 albertel 1065: {
1066: my $state;
1067: sub clear_problem_counter {
1068: undef($state);
1069: &Apache::lonnet::delenv('form.counter');
1070: &Apache::lonxml::init_counter();
1071: &Apache::lonxml::store_counter();
1072: }
1073:
1074: sub remember_problem_counter {
1.422 albertel 1075: &Apache::lonnet::transfer_profile_to_env(undef,undef,1);
1.398 albertel 1076: $state = $env{'form.counter'};
1077: }
1078:
1079: sub restore_problem_counter {
1080: if (defined($state)) {
1081: &Apache::lonnet::appenv(('form.counter' => $state));
1082: }
1083: }
1.401 albertel 1084: sub get_problem_counter {
1085: if ($Apache::lonxml::counter_changed) { &store_counter() }
1.422 albertel 1086: &Apache::lonnet::transfer_profile_to_env(undef,undef,1);
1.401 albertel 1087: return $env{'form.counter'};
1088: }
1.398 albertel 1089: }
1090:
1.19 albertel 1091: sub get_all_text {
1.270 albertel 1092: my($tag,$pars,$style)= @_;
1093: my $gotfullstack=1;
1094: if (ref($pars) ne 'ARRAY') {
1095: $gotfullstack=0;
1096: $pars=[$pars];
1097: }
1098: if (ref($style) ne 'HASH') {
1099: $style={};
1100: }
1101: my $depth=0;
1102: my $token;
1103: my $result='';
1104: if ( $tag =~ m:^/: ) {
1105: my $tag=substr($tag,1);
1106: #&Apache::lonxml::debug("have:$tag:");
1107: my $top_empty=0;
1108: while (($depth >=0) && ($#$pars > -1) && (!$top_empty)) {
1109: while (($depth >=0) && ($token = $$pars[-1]->get_token)) {
1110: #&Apache::lonxml::debug("e token:$token->[0]:$depth:$token->[1]:".$#$pars.":".$#Apache::lonxml::pwd);
1111: if (($token->[0] eq 'T')||($token->[0] eq 'C')||($token->[0] eq 'D')) {
1.382 albertel 1112: if ($token->[2]) {
1113: $result.='<![CDATA['.$token->[1].']]>';
1114: } else {
1115: $result.=$token->[1];
1116: }
1.270 albertel 1117: } elsif ($token->[0] eq 'PI') {
1118: $result.=$token->[2];
1119: } elsif ($token->[0] eq 'S') {
1.316 albertel 1120: if ($token->[1] =~ /^\Q$tag\E$/i) { $depth++; }
1121: if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_ON$/) { $Apache::lonxml::usestyle=1; }
1122: if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_OFF$/) { $Apache::lonxml::usestyle=0; }
1.270 albertel 1123: $result.=$token->[4];
1124: } elsif ($token->[0] eq 'E') {
1.316 albertel 1125: if ( $token->[1] =~ /^\Q$tag\E$/i) { $depth--; }
1.270 albertel 1126: #skip sending back the last end tag
1.283 albertel 1127: if ($depth == 0 && exists($$style{'/'.$token->[1]}) && $Apache::lonxml::usestyle) {
1.270 albertel 1128: my $string=
1129: '<LONCAPA_INTERNAL_TURN_STYLE_OFF end="yes" />'.
1130: $$style{'/'.$token->[1]}.
1131: $token->[2].
1132: '<LONCAPA_INTERNAL_TURN_STYLE_ON />';
1133: &Apache::lonxml::newparser($pars,\$string);
1134: #&Apache::lonxml::debug("reParsing $string");
1135: next;
1136: }
1137: if ($depth > -1) {
1138: $result.=$token->[2];
1139: } else {
1140: $$pars[-1]->unget_token($token);
1141: }
1142: }
1143: }
1144: if (($depth >=0) && ($#$pars == 0) ) { $top_empty=1; }
1145: if (($depth >=0) && ($#$pars > 0) ) {
1146: pop(@$pars);
1147: pop(@Apache::lonxml::pwd);
1148: }
1149: }
1150: if ($top_empty && $depth >= 0) {
1151: #never found the end tag ran out of text, throw error send back blank
1152: &error('Never found end tag for <'.$tag.
1153: '> current string <pre>'.
1.314 albertel 1154: &HTML::Entities::encode($result,'<>&"').
1.270 albertel 1155: '</pre>');
1156: if ($gotfullstack) {
1157: my $newstring='</'.$tag.'>'.$result;
1158: &Apache::lonxml::newparser($pars,\$newstring);
1159: }
1160: $result='';
1161: }
1162: } else {
1163: while ($#$pars > -1) {
1164: while ($token = $$pars[-1]->get_token) {
1165: #&Apache::lonxml::debug("s token:$token->[0]:$depth:$token->[1]");
1166: if (($token->[0] eq 'T')||($token->[0] eq 'C')||
1167: ($token->[0] eq 'D')) {
1.382 albertel 1168: if ($token->[2]) {
1169: $result.='<![CDATA['.$token->[1].']]>';
1170: } else {
1171: $result.=$token->[1];
1172: }
1.270 albertel 1173: } elsif ($token->[0] eq 'PI') {
1174: $result.=$token->[2];
1175: } elsif ($token->[0] eq 'S') {
1.316 albertel 1176: if ( $token->[1] =~ /^\Q$tag\E$/i) {
1.270 albertel 1177: $$pars[-1]->unget_token($token); last;
1178: } else {
1179: $result.=$token->[4];
1180: }
1.316 albertel 1181: if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_ON$/) { $Apache::lonxml::usestyle=1; }
1182: if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_OFF$/) { $Apache::lonxml::usestyle=0; }
1.270 albertel 1183: } elsif ($token->[0] eq 'E') {
1184: $result.=$token->[2];
1185: }
1186: }
1187: if (($#$pars > 0) ) {
1188: pop(@$pars);
1189: pop(@Apache::lonxml::pwd);
1190: } else { last; }
1191: }
1192: }
1193: #&Apache::lonxml::debug("Exit:$result:");
1194: return $result
1.19 albertel 1195: }
1196:
1.23 albertel 1197: sub newparser {
1198: my ($parser,$contentref,$dir) = @_;
1.167 albertel 1199: push (@$parser,HTML::LCParser->new($contentref));
1.365 albertel 1200: $$parser[-1]->xml_mode(1);
1201: $$parser[-1]->marked_sections(1);
1.23 albertel 1202: if ( $dir eq '' ) {
1203: push (@Apache::lonxml::pwd, $Apache::lonxml::pwd[$#Apache::lonxml::pwd]);
1204: } else {
1205: push (@Apache::lonxml::pwd, $dir);
1206: }
1207: }
1.1 sakharuk 1208:
1.8 albertel 1209: sub parstring {
1.417 albertel 1210: my ($token) = @_;
1211: my (@vars,@values);
1212: foreach my $attr (@{$token->[3]}) {
1213: if ($attr!~/\W/) {
1214: my $val=$token->[2]->{$attr};
1215: $val =~ s/([\%\@\\\"\'])/\\$1/g;
1216: $val =~ s/(\$[^\{a-zA-Z_])/\\$1/g;
1217: $val =~ s/(\$)$/\\$1/;
1218: #if ($val =~ m/^[\%\@]/) { $val="\\".$val; }
1219: push(@vars,"\$$attr");
1220: push(@values,"\"$val\"");
1221: }
1222: }
1223: my $var_init =
1224: (@vars) ? 'my ('.join(',',@vars).') = ('.join(',',@values).');'
1225: : '';
1226: return $var_init;
1.8 albertel 1227: }
1.22 albertel 1228:
1.384 albertel 1229: sub extlink {
1230: my ($res,$exact)=@_;
1231: if (!$exact) {
1232: $res=&Apache::lonnet::hreflocation($Apache::lonxml::pwd[-1],$res);
1233: }
1234: push(@Apache::lonxml::extlinks,$res)
1235: }
1236:
1.34 www 1237: sub writeallows {
1.126 www 1238: unless ($#extlinks>=0) { return; }
1.377 albertel 1239: my $thisurl = &Apache::lonnet::clutter(shift);
1.372 albertel 1240: if ($env{'httpref.'.$thisurl}) {
1241: $thisurl=$env{'httpref.'.$thisurl};
1.111 www 1242: }
1.34 www 1243: my $thisdir=$thisurl;
1244: $thisdir=~s/\/[^\/]+$//;
1245: my %httpref=();
1.142 albertel 1246: foreach (@extlinks) {
1.34 www 1247: $httpref{'httpref.'.
1.444 albertel 1248: &Apache::lonnet::hreflocation($thisdir,&unescape($_))}=$thisurl;
1.142 albertel 1249: }
1.126 www 1250: @extlinks=();
1.34 www 1251: &Apache::lonnet::appenv(%httpref);
1252: }
1253:
1.281 albertel 1254: sub register_ssi {
1255: my ($url,%form)=@_;
1256: push (@Apache::lonxml::ssi_info,{'url'=>$url,'form'=>\%form});
1257: return '';
1258: }
1259:
1260: sub do_registered_ssi {
1261: foreach my $info (@Apache::lonxml::ssi_info) {
1262: my %form=%{ $info->{'form'}};
1263: my $url=$info->{'url'};
1264: &Apache::lonnet::ssi($url,%form);
1265: }
1266: }
1.448 albertel 1267:
1268: sub add_script_result {
1269: my ($display) = @_;
1270: push(@script_var_displays, $display);
1271: }
1272:
1.66 www 1273: #
1274: # Afterburner handles anchors, highlights and links
1275: #
1276: sub afterburn {
1277: my $result=shift;
1.154 albertel 1278: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
1279: ['highlight','anchor','link']);
1.372 albertel 1280: if ($env{'form.highlight'}) {
1281: foreach (split(/\,/,$env{'form.highlight'})) {
1.66 www 1282: my $anchorname=$_;
1283: my $matchthis=$anchorname;
1284: $matchthis=~s/\_+/\\s\+/g;
1.317 albertel 1285: $result=~s/(\Q$matchthis\E)/\<font color=\"red\"\>$1\<\/font\>/gs;
1.142 albertel 1286: }
1.66 www 1287: }
1.372 albertel 1288: if ($env{'form.link'}) {
1289: foreach (split(/\,/,$env{'form.link'})) {
1.66 www 1290: my ($anchorname,$linkurl)=split(/\>/,$_);
1291: my $matchthis=$anchorname;
1292: $matchthis=~s/\_+/\\s\+/g;
1.317 albertel 1293: $result=~s/(\Q$matchthis\E)/\<a href=\"$linkurl\"\>$1\<\/a\>/gs;
1.142 albertel 1294: }
1.66 www 1295: }
1.372 albertel 1296: if ($env{'form.anchor'}) {
1297: my $anchorname=$env{'form.anchor'};
1.66 www 1298: my $matchthis=$anchorname;
1299: $matchthis=~s/\_+/\\s\+/g;
1.317 albertel 1300: $result=~s/(\Q$matchthis\E)/\<a name=\"$anchorname\"\>$1\<\/a\>/s;
1.66 www 1301: $result.=(<<"ENDSCRIPT");
1.226 albertel 1302: <script type="text/javascript">
1.66 www 1303: document.location.hash='$anchorname';
1304: </script>
1305: ENDSCRIPT
1306: }
1307: return $result;
1308: }
1309:
1.79 www 1310: sub storefile {
1311: my ($file,$contents)=@_;
1.290 albertel 1312: &Apache::lonnet::correct_line_ends(\$contents);
1.79 www 1313: if (my $fh=Apache::File->new('>'.$file)) {
1314: print $fh $contents;
1315: $fh->close();
1.271 www 1316: return 1;
1.147 albertel 1317: } else {
1.271 www 1318: &warning("Unable to save file $file");
1319: return 0;
1.79 www 1320: }
1321: }
1322:
1.151 albertel 1323: sub createnewhtml {
1.321 www 1324: my $title=&mt('Title of document goes here');
1325: my $body=&mt('Body of document goes here');
1326: my $filecontents=(<<SIMPLECONTENT);
1.78 www 1327: <html>
1328: <head>
1.321 www 1329: <title>$title</title>
1.78 www 1330: </head>
1331: <body bgcolor="#FFFFFF">
1.321 www 1332: $body
1.78 www 1333: </body>
1334: </html>
1335: SIMPLECONTENT
1.321 www 1336: return $filecontents;
1.151 albertel 1337: }
1338:
1.274 albertel 1339: sub createnewsty {
1340: my $filecontents=(<<SIMPLECONTENT);
1341: <definetag name="">
1342: <render>
1343: <web></web>
1344: <tex></tex>
1345: </render>
1346: </definetag>
1347: SIMPLECONTENT
1348: return $filecontents;
1349: }
1350:
1.147 albertel 1351:
1.151 albertel 1352: sub inserteditinfo {
1.450 albertel 1353: my ($filecontents,$filetype)=@_;
1.314 albertel 1354: $filecontents = &HTML::Entities::encode($filecontents,'<>&"');
1.147 albertel 1355: # my $editheader='<a href="#editsection">Edit below</a><hr />';
1.274 albertel 1356: my $xml_help = '';
1.321 www 1357: my $initialize='';
1.452 albertel 1358: my $textarea_id = 'filecont';
1359: my ($add_to_onload, $add_to_onresize);
1.274 albertel 1360: if ($filetype eq 'html') {
1.323 www 1361: my $addbuttons=&Apache::lonhtmlcommon::htmlareaaddbuttons();
1.410 albertel 1362: $initialize=&Apache::lonhtmlcommon::spellheader();
1.347 albertel 1363: if (!&Apache::lonhtmlcommon::htmlareablocked() &&
1364: &Apache::lonhtmlcommon::htmlareabrowser()) {
1.452 albertel 1365: $textarea_id .= '_htmlarea';
1.347 albertel 1366: $initialize.=(<<FULLPAGE);
1.321 www 1367: <script type="text/javascript">
1.323 www 1368: $addbuttons
1369:
1.321 www 1370: HTMLArea.loadPlugin("FullPage");
1371:
1372: function initDocument() {
1.323 www 1373: var editor=new HTMLArea("filecont",config);
1.321 www 1374: editor.registerPlugin(FullPage);
1375: editor.generate();
1.451 albertel 1376: setTimeout(
1377: function () {
1378: HTMLArea._addEvents(editor._doc,
1379: ["keypress","mousedown"], unClean);
1.452 albertel 1380: editor._iframe.id = '$textarea_id';
1.453 ! albertel 1381: resize_textarea('$textarea_id','LC_aftertextarea');
1.451 albertel 1382: },300);
1.321 www 1383: }
1384: </script>
1385: FULLPAGE
1.347 albertel 1386: } else {
1387: $initialize.=(<<FULLPAGE);
1388: <script type="text/javascript">
1389: $addbuttons
1390: function initDocument() {
1.453 ! albertel 1391: resize_textarea('$textarea_id','LC_aftertextarea');
1.347 albertel 1392: }
1393: </script>
1394: FULLPAGE
1395: }
1.450 albertel 1396: $add_to_onload = 'initDocument();';
1.452 albertel 1397: $add_to_onresize = "resize_textarea('$textarea_id','LC_aftertextarea');";
1.321 www 1398: $xml_help=&Apache::loncommon::helpLatexCheatsheet();
1.274 albertel 1399: }
1.452 albertel 1400:
1.274 albertel 1401: my $cleanbut = '';
1.374 www 1402:
1.254 albertel 1403: my $titledisplay=&display_title();
1.426 banghart 1404: my %lt=&Apache::lonlocal::texthash('st' => 'Save and Edit',
1405: 'vi' => 'Save and View',
1.427 banghart 1406: 'dv' => 'Discard Edits and View',
1.428 banghart 1407: 'un' => 'undo',
1.280 www 1408: 'ed' => 'Edit');
1.161 albertel 1409: my $buttons=(<<BUTTONS);
1.274 albertel 1410: $cleanbut
1.428 banghart 1411: <input type="submit" name="discardview" accesskey="d" value="$lt{'dv'}" />
1412: <input type="submit" name="Undo" accesskey="u" value="$lt{'un'}" /><hr>
1.304 matthew 1413: <input type="submit" name="savethisfile" accesskey="s" value="$lt{'st'}" />
1414: <input type="submit" name="viewmode" accesskey="v" value="$lt{'vi'}" />
1.161 albertel 1415: BUTTONS
1.333 www 1416: $buttons.=&Apache::lonhtmlcommon::spelllink('xmledit','filecont');
1.451 albertel 1417: my $textarea_events = &Apache::edit::element_change_detection();
1418: my $form_events = &Apache::edit::form_change_detection();
1.78 www 1419: my $editfooter=(<<ENDFOOTER);
1.321 www 1420: $initialize
1.78 www 1421: <hr />
1422: <a name="editsection" />
1.451 albertel 1423: <form $form_events method="post" name="xmledit">
1.240 albertel 1424: $xml_help
1.280 www 1425: <input type="hidden" name="editmode" value="$lt{'ed'}" />
1.170 www 1426: $buttons<br />
1.451 albertel 1427: <textarea $textarea_events style="width:100%" cols="80" rows="44" name="filecont" id="filecont">$filecontents</textarea>
1.452 albertel 1428: <div id="LC_aftertextarea">
1.170 www 1429: <br />$buttons
1.78 www 1430: <br />
1.452 albertel 1431: $titledisplay
1432: </div>
1.78 www 1433: </form>
1.321 www 1434: </body>
1.78 www 1435: ENDFOOTER
1.452 albertel 1436: return ($editfooter,$add_to_onload,$add_to_onresize);;
1.78 www 1437: }
1438:
1.152 albertel 1439: sub get_target {
1.372 albertel 1440: my $viewgrades=&Apache::lonnet::allowed('vgr',$env{'request.course.id'});
1441: if ( $env{'request.state'} eq 'published') {
1442: if ( defined($env{'form.grade_target'})
1.152 albertel 1443: && ($viewgrades == 'F' )) {
1.372 albertel 1444: return ($env{'form.grade_target'});
1445: } elsif (defined($env{'form.grade_target'})) {
1446: if (($env{'form.grade_target'} eq 'web') ||
1447: ($env{'form.grade_target'} eq 'tex') ) {
1448: return $env{'form.grade_target'}
1.153 albertel 1449: } else {
1450: return 'web';
1451: }
1.152 albertel 1452: } else {
1453: return 'web';
1454: }
1.372 albertel 1455: } elsif ($env{'request.state'} eq 'construct') {
1456: if ( defined($env{'form.grade_target'})) {
1457: return ($env{'form.grade_target'});
1.152 albertel 1458: } else {
1459: return 'web';
1460: }
1461: } else {
1462: return 'web';
1463: }
1464: }
1465:
1.24 sakharuk 1466: sub handler {
1.255 sakharuk 1467: my $request=shift;
1468:
1469: my $target=&get_target();
1470:
1.372 albertel 1471: $Apache::lonxml::debug=$env{'user.debug'};
1.255 sakharuk 1472:
1.364 albertel 1473: &Apache::loncommon::content_type($request,'text/html');
1.255 sakharuk 1474: &Apache::loncommon::no_cache($request);
1.372 albertel 1475: if ($env{'request.state'} eq 'published') {
1.363 albertel 1476: $request->set_last_modified(&Apache::lonnet::metadata($request->uri,
1477: 'lastrevisiondate'));
1478: }
1.255 sakharuk 1479: $request->send_http_header;
1480:
1481: return OK if $request->header_only;
1.68 www 1482:
1483:
1.255 sakharuk 1484: my $file=&Apache::lonnet::filelocation("",$request->uri);
1.274 albertel 1485: my $filetype;
1486: if ($file =~ /\.sty$/) {
1487: $filetype='sty';
1488: } else {
1489: $filetype='html';
1490: }
1.78 www 1491: #
1492: # Edit action? Save file.
1493: #
1.428 banghart 1494: if (!($env{'request.state'} eq 'published')) {
1495: if ($env{'form.savethisfile'} || $env{'form.viewmode'} || $env{'form.Undo'}) {
1.429 albertel 1496: my $html_file=&Apache::lonnet::getfile($file);
1497: my $error = &Apache::lonhomework::handle_save_or_undo($request, \$html_file, \$env{'form.filecont'});
1.255 sakharuk 1498: }
1499: }
1500: my %mystyle;
1501: my $result = '';
1502: my $filecontents=&Apache::lonnet::getfile($file);
1503: if ($filecontents eq -1) {
1.402 albertel 1504: my $start_page=&Apache::loncommon::start_page('File Error');
1.412 albertel 1505: my $end_page=&Apache::loncommon::end_page();
1.284 www 1506: my $fnf=&mt('File not found');
1.255 sakharuk 1507: $result=(<<ENDNOTFOUND);
1.402 albertel 1508: $start_page
1.284 www 1509: <b>$fnf: $file</b>
1.402 albertel 1510: $end_page
1.78 www 1511: ENDNOTFOUND
1.343 albertel 1512: $filecontents='';
1.372 albertel 1513: if ($env{'request.state'} ne 'published') {
1.274 albertel 1514: if ($filetype eq 'sty') {
1515: $filecontents=&createnewsty();
1516: } else {
1517: $filecontents=&createnewhtml();
1518: }
1.372 albertel 1519: $env{'form.editmode'}='Edit'; #force edit mode
1.255 sakharuk 1520: }
1521: } else {
1.372 albertel 1522: unless ($env{'request.state'} eq 'published') {
1.343 albertel 1523: if ($filecontents=~/BEGIN LON-CAPA Internal/) {
1.381 www 1524: &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 1525: }
1.264 www 1526: #
1527: # we are in construction space, see if edit mode forced
1.385 albertel 1528: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
1529: ['editmode']);
1.255 sakharuk 1530: }
1.427 banghart 1531: if (!$env{'form.editmode'} || $env{'form.viewmode'} || $env{'form.discardview'}) {
1.255 sakharuk 1532: $result = &Apache::lonxml::xmlparse($request,$target,$filecontents,
1533: '',%mystyle);
1.368 albertel 1534: undef($Apache::lonhomework::parsing_a_task);
1.385 albertel 1535: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
1536: ['rawmode']);
1.395 albertel 1537: if ($env{'form.rawmode'}) { $result = $filecontents; }
1.255 sakharuk 1538: }
1.147 albertel 1539: }
1.255 sakharuk 1540:
1.78 www 1541: #
1542: # Edit action? Insert editing commands
1543: #
1.372 albertel 1544: unless ($env{'request.state'} eq 'published') {
1.427 banghart 1545: if ($env{'form.editmode'} && (!($env{'form.viewmode'})) && (!($env{'form.discardview'})))
1.450 albertel 1546: {
1.452 albertel 1547: my ($edit_info, $add_to_onload, $add_to_onresize)=
1.450 albertel 1548: &inserteditinfo($filecontents,$filetype);
1549:
1.255 sakharuk 1550: my $displayfile=$request->uri;
1551: $displayfile=~s/^\/[^\/]*//;
1.450 albertel 1552: my %options =
1553: ('add_entries' =>
1.452 albertel 1554: {'onresize' => $add_to_onresize,
1555: 'onload' => $add_to_onload, });
1556:
1.402 albertel 1557: if ($env{'environment.remote'} ne 'off') {
1558: $options{'bgcolor'} = '#FFFFFF';
1.450 albertel 1559: $options{'only_body'} = 1;
1.349 albertel 1560: }
1.452 albertel 1561: my $js =
1562: &Apache::edit::js_change_detection().
1563: &Apache::loncommon::resize_textarea_js();
1.451 albertel 1564: my $start_page = &Apache::loncommon::start_page(undef,$js,
1.402 albertel 1565: \%options);
1566: $result=$start_page.
1.309 albertel 1567: &Apache::lonxml::message_location().'<h3>'.
1568: $displayfile.
1.450 albertel 1569: '</h3>'.
1570: $edit_info.
1571: &Apache::loncommon::end_page();
1.255 sakharuk 1572: }
1.147 albertel 1573: }
1.402 albertel 1574: if ($filetype eq 'html') { &writeallows($request->uri); }
1.255 sakharuk 1575:
1.309 albertel 1576: &Apache::lonxml::add_messages(\$result);
1.255 sakharuk 1577: $request->print($result);
1578:
1579: return OK;
1.253 albertel 1580: }
1581:
1582: sub display_title {
1583: my $result;
1.372 albertel 1584: if ($env{'request.state'} eq 'construct') {
1.253 albertel 1585: my $title=&Apache::lonnet::gettitle();
1586: if (!defined($title) || $title eq '') {
1.372 albertel 1587: $title = $env{'request.filename'};
1.253 albertel 1588: $title = substr($title, rindex($title, '/') + 1);
1589: }
1590: $result = "<script type='text/javascript'>top.document.title = '$title - LON-CAPA Construction Space';</script>";
1591: }
1592: return $result;
1.24 sakharuk 1593: }
1.147 albertel 1594:
1.22 albertel 1595: sub debug {
1.298 albertel 1596: if ($Apache::lonxml::debug eq "1") {
1597: $|=1;
1.300 albertel 1598: my $request=$Apache::lonxml::request;
1.388 albertel 1599: if (!$request) {
1600: eval { $request=Apache->request; };
1601: }
1602: if (!$request) {
1603: eval { $request=Apache2::RequestUtil->request; };
1604: }
1.314 albertel 1605: $request->print('<font size="-2"><pre>DEBUG:'.&HTML::Entities::encode($_[0],'<>&"')."</pre></font>\n");
1.346 albertel 1606: #&Apache::lonnet::logthis($_[0]);
1.298 albertel 1607: }
1.22 albertel 1608: }
1.49 albertel 1609:
1.348 albertel 1610: sub show_error_warn_msg {
1.372 albertel 1611: if ($env{'request.filename'} eq '/home/httpd/html/res/lib/templates/simpleproblem.problem' &&
1612: &Apache::lonnet::allowed('mdc',$env{'request.course.id'})) {
1.351 albertel 1613: return 1;
1614: }
1.348 albertel 1615: return (($Apache::lonxml::debug eq 1) ||
1.372 albertel 1616: ($env{'request.state'} eq 'construct') ||
1.348 albertel 1617: ($Apache::lonhomework::browse eq 'F'
1618: &&
1.372 albertel 1619: $env{'form.show_errors'} eq 'on'));
1.348 albertel 1620: }
1621:
1.22 albertel 1622: sub error {
1.336 albertel 1623: $errorcount++;
1.348 albertel 1624: if ( &show_error_warn_msg() ) {
1.336 albertel 1625: # If printing in construction space, put the error inside <pre></pre>
1626: push(@Apache::lonxml::error_messages,
1627: $Apache::lonxml::warnings_error_header.
1628: "<b>ERROR:</b>".join("<br />\n",@_)."<br />\n");
1629: $Apache::lonxml::warnings_error_header='';
1630: } else {
1631: my $errormsg;
1632: my ($symb)=&Apache::lonnet::symbread();
1633: if ( !$symb ) {
1634: #public or browsers
1635: $errormsg=&mt("An error occured while processing this resource. The author has been notified.");
1.403 albertel 1636: }
1.413 albertel 1637: my $host=$Apache::lonnet::perlvar{'lonHostID'};
1.416 albertel 1638: my $msg = join('<br />',(@_,"The error occurred on host <tt>$host</tt>"));
1.336 albertel 1639: #notify author
1.403 albertel 1640: &Apache::lonmsg::author_res_msg($env{'request.filename'},$msg);
1.336 albertel 1641: #notify course
1.372 albertel 1642: if ( $symb && $env{'request.course.id'} ) {
1.380 www 1643: my $cnum=$env{'course.'.$env{'request.course.id'}.'.num'};
1644: my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
1.440 albertel 1645: my (undef,%users)=&Apache::lonmsg::decide_receiver(undef,0,1,1,1);
1.372 albertel 1646: my $declutter=&Apache::lonnet::declutter($env{'request.filename'});
1.435 raeburn 1647: my $baseurl = &Apache::lonnet::clutter($declutter);
1.336 albertel 1648: my @userlist;
1649: foreach (keys %users) {
1650: my ($user,$domain) = split(/:/, $_);
1651: push(@userlist,"$user\@$domain");
1.380 www 1652: my $key=$declutter.'_'.$user.'_'.$domain;
1653: my %lastnotified=&Apache::lonnet::get('nohist_xmlerrornotifications',
1654: [$key],
1655: $cdom,$cnum);
1656: my $now=time;
1657: if ($now-$lastnotified{$key}>86400) {
1.434 raeburn 1658: my $title = &Apache::lonnet::gettitle($symb);
1659: my $sentmessage;
1.380 www 1660: &Apache::lonmsg::user_normal_msg($user,$domain,
1.435 raeburn 1661: "Error [$title]",$msg,'',$baseurl,'','',
1.434 raeburn 1662: \$sentmessage,$symb,$title,1);
1.380 www 1663: &Apache::lonnet::put('nohist_xmlerrornotifications',
1664: {$key => $now},
1665: $cdom,$cnum);
1666: }
1.336 albertel 1667: }
1.372 albertel 1668: if ($env{'request.role.adv'}) {
1.336 albertel 1669: $errormsg=&mt("An error occured while processing this resource. The course personnel ([_1]) and the author have been notified.",join(', ',@userlist));
1670: } else {
1671: $errormsg=&mt("An error occured while processing this resource. The instructor has been notified.");
1672: }
1673: }
1674: push(@Apache::lonxml::error_messages,"<b>$errormsg</b> <br />");
1.52 albertel 1675: }
1.22 albertel 1676: }
1.49 albertel 1677:
1.22 albertel 1678: sub warning {
1.295 albertel 1679: $warningcount++;
1.261 albertel 1680:
1.372 albertel 1681: if ($env{'form.grade_target'} ne 'tex') {
1.348 albertel 1682: if ( &show_error_warn_msg() ) {
1.309 albertel 1683: push(@Apache::lonxml::warning_messages,
1684: $Apache::lonxml::warnings_error_header.
1685: "<b>W</b>ARNING<b>:</b>".join('<br />',@_)."<br />\n");
1.295 albertel 1686: $Apache::lonxml::warnings_error_header='';
1687: }
1688: }
1.309 albertel 1689: }
1690:
1691: sub info {
1.372 albertel 1692: if ($env{'form.grade_target'} ne 'tex'
1693: && $env{'request.state'} eq 'construct') {
1.309 albertel 1694: push(@Apache::lonxml::info_messages,join('<br />',@_)."<br />\n");
1695: }
1696: }
1697:
1698: sub message_location {
1699: return '__LONCAPA_INTERNAL_MESSAGE_LOCATION__';
1700: }
1701:
1702: sub add_messages {
1703: my ($msg)=@_;
1704: my $result=join(' ',
1705: @Apache::lonxml::info_messages,
1706: @Apache::lonxml::error_messages,
1707: @Apache::lonxml::warning_messages);
1708: undef(@Apache::lonxml::info_messages);
1709: undef(@Apache::lonxml::error_messages);
1710: undef(@Apache::lonxml::warning_messages);
1711: $$msg=~s/__LONCAPA_INTERNAL_MESSAGE_LOCATION__/$result/;
1712: $$msg=~s/__LONCAPA_INTERNAL_MESSAGE_LOCATION__//g;
1.83 albertel 1713: }
1714:
1715: sub get_param {
1.213 albertel 1716: my ($param,$parstack,$safeeval,$context,$case_insensitive) = @_;
1717: if ( ! $context ) { $context = -1; }
1718: my $args ='';
1719: if ( $#$parstack > (-2-$context) ) { $args=$$parstack[$context]; }
1.297 sakharuk 1720: if ( ! $Apache::lonxml::usestyle ) {
1721: $args=$Apache::lonxml::style_values.$args;
1722: }
1.213 albertel 1723: if ( ! $args ) { return undef; }
1724: if ( $case_insensitive ) {
1.417 albertel 1725: if ($args =~ s/(my (?:.*))(\$\Q$param\E[,\)])/$1.lc($2)/ei) {
1.213 albertel 1726: return &Apache::run::run("{$args;".'return $'.$param.'}',
1727: $safeeval); #'
1728: } else {
1729: return undef;
1730: }
1731: } else {
1.417 albertel 1732: if ( $args =~ /my .*\$\Q$param\E[,\)]/ ) {
1.213 albertel 1733: return &Apache::run::run("{$args;".'return $'.$param.'}',
1734: $safeeval); #'
1735: } else {
1736: return undef;
1737: }
1738: }
1.22 albertel 1739: }
1740:
1.132 albertel 1741: sub get_param_var {
1.213 albertel 1742: my ($param,$parstack,$safeeval,$context,$case_insensitive) = @_;
1.132 albertel 1743: if ( ! $context ) { $context = -1; }
1744: my $args ='';
1745: if ( $#$parstack > (-2-$context) ) { $args=$$parstack[$context]; }
1.297 sakharuk 1746: if ( ! $Apache::lonxml::usestyle ) {
1747: $args=$Apache::lonxml::style_values.$args;
1748: }
1.230 albertel 1749: &Apache::lonxml::debug("Args are $args param is $param");
1.213 albertel 1750: if ($case_insensitive) {
1.419 albertel 1751: if (! ($args=~s/(my (?:.*))(\$\Q$param\E[,\)])/$1.lc($2)/ei)) {
1.213 albertel 1752: return undef;
1753: }
1.419 albertel 1754: } elsif ( $args !~ /my .*\$\Q$param\E[,\)]/ ) { return undef; }
1.132 albertel 1755: my $value=&Apache::run::run("{$args;".'return $'.$param.'}',$safeeval); #'
1.230 albertel 1756: &Apache::lonxml::debug("first run is $value");
1.341 albertel 1757: if ($value =~ /^[\$\@\%][a-zA-Z_]\w*$/) {
1.230 albertel 1758: &Apache::lonxml::debug("doing second");
1759: my @result=&Apache::run::run("return $value",$safeeval,1);
1760: if (!defined($result[0])) {
1761: return $value
1762: } else {
1763: if (wantarray) { return @result; } else { return $result[0]; }
1764: }
1.132 albertel 1765: } else {
1766: return $value;
1767: }
1768: }
1769:
1.438 albertel 1770: sub register_insert_xml {
1771: my $parser = HTML::LCParser->new($Apache::lonnet::perlvar{'lonTabDir'}
1772: .'/insertlist.xml');
1773: my ($tagnum,$in_help)=(0,0);
1.442 albertel 1774: my @alltags;
1.438 albertel 1775: my $tag;
1776: while (my $token = $parser->get_token()) {
1777: if ($token->[0] eq 'S') {
1778: my $key;
1779: if ($token->[1] eq 'tag') {
1780: $tag = $token->[2]{'name'};
1781: $insertlist{"$tagnum.tag"} = $tag;
1782: $insertlist{"$tag.num"} = $tagnum;
1.442 albertel 1783: push(@alltags,$tag);
1.438 albertel 1784: } elsif ($in_help && $token->[1] eq 'file') {
1785: $key = $tag.'.helpfile';
1786: } elsif ($in_help && $token->[1] eq 'description') {
1787: $key = $tag.'.helpdesc';
1788: } elsif ($token->[1] eq 'description' ||
1789: $token->[1] eq 'color' ||
1790: $token->[1] eq 'show' ) {
1791: $key = $tag.'.'.$token->[1];
1792: } elsif ($token->[1] eq 'insert_sub') {
1793: $key = $tag.'.function';
1794: } elsif ($token->[1] eq 'help') {
1795: $in_help=1;
1796: } elsif ($token->[1] eq 'allow') {
1.442 albertel 1797: $key = $tag.'.allow';
1.438 albertel 1798: }
1799: if (defined($key)) {
1800: $insertlist{$key} = $parser->get_text();
1801: $insertlist{$key} =~ s/(^\s*|\s*$ )//gx;
1802: }
1803: } elsif ($token->[0] eq 'E') {
1804: if ($token->[1] eq 'tag') {
1805: undef($tag);
1806: $tagnum++;
1807: } elsif ($token->[1] eq 'help') {
1808: undef($in_help);
1809: }
1810: }
1811: }
1.442 albertel 1812:
1813: # parse the allows and ignore tags set to <show>no</show>
1814: foreach my $tag (@alltags) {
1.445 albertel 1815: next if (!exists($insertlist{"$tag.allow"}));
1.442 albertel 1816: my $allow = $insertlist{"$tag.allow"};
1817: foreach my $element (split(',',$allow)) {
1818: $element =~ s/(^\s*|\s*$ )//gx;
1.446 albertel 1819: if (!exists($insertlist{"$element.show"})
1820: || $insertlist{"$element.show"} ne 'no') {
1.442 albertel 1821: push(@{ $insertlist{$tag.'.which'} },$element);
1822: }
1823: }
1824: }
1.438 albertel 1825: }
1826:
1827: sub register_insert {
1828: return ®ister_insert_xml(@_);
1829: # &dump_insertlist('2');
1830: }
1831:
1832: sub dump_insertlist {
1833: my ($ext) = @_;
1834: open(XML,">/tmp/insertlist.xml.$ext");
1835: print XML ("<insertlist>");
1836: my $i=0;
1837:
1838: while (exists($insertlist{"$i.tag"})) {
1839: my $tag = $insertlist{"$i.tag"};
1840: print XML ("
1841: \t<tag name=\"$tag\">");
1842: if (defined($insertlist{"$tag.description"})) {
1843: print XML ("
1844: \t\t<description>".$insertlist{"$tag.description"}."</description>");
1845: }
1846: if (defined($insertlist{"$tag.color"})) {
1847: print XML ("
1848: \t\t<color>".$insertlist{"$tag.color"}."</color>");
1849: }
1850: if (defined($insertlist{"$tag.function"})) {
1851: print XML ("
1852: \t\t<insert_sub>".$insertlist{"$tag.function"}."</insert_sub>");
1853: }
1854: if (defined($insertlist{"$tag.show"})
1855: && $insertlist{"$tag.show"} ne 'yes') {
1856: print XML ("
1857: \t\t<show>".$insertlist{"$tag.show"}."</show>");
1858: }
1859: if (defined($insertlist{"$tag.helpfile"})) {
1860: print XML ("
1861: \t\t<help>
1862: \t\t\t<file>".$insertlist{"$tag.helpfile"}."</file>");
1863: if ($insertlist{"$tag.helpdesc"} ne '') {
1864: print XML ("
1865: \t\t\t<description>".$insertlist{"$tag.helpdesc"}."</description>");
1866: }
1867: print XML ("
1868: \t\t</help>");
1869: }
1870: if (defined($insertlist{"$tag.which"})) {
1871: print XML ("
1872: \t\t<allow>".join(',',sort(@{ $insertlist{"$tag.which"} }))."</allow>");
1873: }
1874: print XML ("
1875: \t</tag>");
1876: $i++;
1877: }
1878: print XML ("\n</insertlist>\n");
1879: close(XML);
1880: }
1881:
1.98 albertel 1882: sub description {
1.437 albertel 1883: my ($token)=@_;
1884: my $tag = &get_tag($token);
1885: return $insertlist{$tag.'.description'};
1.268 bowersj2 1886: }
1887:
1888: # Returns a list containing the help file, and the description
1889: sub helpinfo {
1.437 albertel 1890: my ($token)=@_;
1891: my $tag = &get_tag($token);
1892: return ($insertlist{$tag.'.helpfile'}, $insertlist{$tag.'.helpdesc'});
1893: }
1894:
1895: sub get_tag {
1896: my ($token)=@_;
1897: my $tagnum;
1898: my $tag=$token->[1];
1899: foreach my $namespace (reverse(@Apache::lonxml::namespace)) {
1900: my $testtag = $namespace.'::'.$tag;
1901: $tagnum = $insertlist{"$testtag.num"};
1902: last if (defined($tagnum));
1903: }
1904: if (!defined($tagnum)) {
1905: $tagnum = $Apache::lonxml::insertlist{"$tag.num"};
1906: }
1907: return $insertlist{"$tagnum.tag"};
1.98 albertel 1908: }
1.123 albertel 1909:
1.1 sakharuk 1910: 1;
1911: __END__
1.68 www 1912:
1913:
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