Annotation of loncom/xml/lonxml.pm, revision 1.431
1.2 sakharuk 1: # The LearningOnline Network with CAPA
1.3 sakharuk 2: # XML Parser Module
1.2 sakharuk 3: #
1.431 ! www 4: # $Id: lonxml.pm,v 1.430 2006/12/11 00:42:47 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 $warningcount);
1.1 sakharuk 44: use strict;
1.167 albertel 45: use HTML::LCParser();
1.161 albertel 46: use HTML::TreeBuilder();
47: use HTML::Entities();
48: use Safe();
49: use Safe::Hole();
50: use Math::Cephes();
51: use Math::Random();
52: use Opcode();
1.271 www 53: use POSIX qw(strftime);
1.339 albertel 54: use Time::HiRes qw( gettimeofday tv_interval );
1.393 albertel 55: use Symbol();
1.266 bowersj2 56:
1.72 albertel 57: sub register {
1.141 albertel 58: my ($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();
1.431 ! www 91: use Apache::lonmaxima();
1.280 www 92: use Apache::lonlocal;
1.79 www 93:
1.72 albertel 94: #================================================== Main subroutine: xmlparse
95: #debugging control, to turn on debugging modify the correct handler
96: $Apache::lonxml::debug=0;
1.206 albertel 97:
98: # keeps count of the number of warnings and errors generated in a parse
99: $warningcount=0;
100: $errorcount=0;
1.72 albertel 101:
102: #path to the directory containing the file currently being processed
103: @pwd=();
104:
105: #these two are used for capturing a subset of the output for later processing,
106: #don't touch them directly use &startredirection and &endredirection
107: @outputstack = ();
108: $redirection = 0;
109:
110: #controls wheter the <import> tag actually does
111: $import = 1;
112: @extlinks=();
113:
114: # meta mode is a bit weird only some output is to be turned off
115: #<output> tag turns metamode off (defined in londefdef.pm)
116: $metamode = 0;
117:
118: # turns on and of run::evaluate actually derefencing var refs
119: $evaluate = 1;
1.7 albertel 120:
1.74 albertel 121: # data structure for eidt mode, determines what tags can go into what other tags
122: %insertlist=();
1.68 www 123:
1.99 albertel 124: # stores the list of active tag namespaces
1.76 albertel 125: @namespace=();
126:
1.172 albertel 127: # a pointer the the Apache request object
128: $Apache::lonxml::request='';
129:
1.216 sakharuk 130: # a problem number counter, and check on ether it is used
1.237 sakharuk 131: $Apache::lonxml::counter=1;
1.204 albertel 132: $Apache::lonxml::counter_changed=0;
133:
1.212 albertel 134: #internal check on whether to look at style defs
135: $Apache::lonxml::usestyle=1;
1.260 albertel 136:
137: #locations used to store the parameter string for style substitutions
138: $Apache::lonxml::style_values='';
139: $Apache::lonxml::style_end_values='';
1.212 albertel 140:
1.281 albertel 141: #array of ssi calls that need to occur after we are done parsing
142: @Apache::lonxml::ssi_info=();
143:
1.282 albertel 144: #should we do the postag variable interpolation
145: $Apache::lonxml::post_evaluate=1;
146:
1.295 albertel 147: #a header message to emit in the case of any generated warning or errors
148: $Apache::lonxml::warnings_error_header='';
149:
1.396 foxr 150: # Control whether or not LaTeX symbols should be substituted for their
151: # \ style equivalents...this may be turned off e.g. in an verbatim
152: # environment.
153:
154: $Apache::lonxml::substitute_LaTeX_symbols = 1; # Starts out on.
155:
156: sub enable_LaTeX_substitutions {
157: $Apache::lonxml::substitute_LaTeX_symbols = 1;
158: }
159: sub disable_LaTeX_substitutions {
160: $Apache::lonxml::substitute_LaTeX_symbols = 0;
161: }
162:
1.68 www 163: sub xmlend {
1.335 sakharuk 164: my ($target,$parser)=@_;
1.278 www 165: my $mode='xml';
166: my $status='OPEN';
1.368 albertel 167: if ($Apache::lonhomework::parsing_a_problem ||
168: $Apache::lonhomework::parsing_a_task ) {
1.278 www 169: $mode='problem';
170: $status=$Apache::inputtags::status[-1];
171: }
1.362 matthew 172: my $discussion;
1.379 albertel 173: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
174: ['LONCAPA_INTERNAL_no_discussion']);
1.372 albertel 175: if (! exists($env{'form.LONCAPA_INTERNAL_no_discussion'}) ||
176: $env{'form.LONCAPA_INTERNAL_no_discussion'} ne 'true') {
1.362 matthew 177: $discussion=&Apache::lonfeedback::list_discussion($mode,$status);
178: }
1.334 sakharuk 179: if ($target eq 'tex') {
1.335 sakharuk 180: $discussion.='<tex>\keephidden{ENDOFPROBLEM}\vskip 0.5mm\noindent\makebox[\textwidth/$number_of_columns][b]{\hrulefill}\end{document}</tex>';
1.334 sakharuk 181: &Apache::lonxml::newparser($parser,\$discussion,'');
182: return '';
183: }
1.405 albertel 184:
1.407 albertel 185: return $discussion;
1.119 www 186: }
187:
188: sub tokeninputfield {
1.120 www 189: my $defhost=$Apache::lonnet::perlvar{'lonHostID'};
190: $defhost=~tr/a-z/A-Z/;
1.119 www 191: return (<<ENDINPUTFIELD)
1.226 albertel 192: <script type="text/javascript">
1.120 www 193: function updatetoken() {
194: var comp=new Array;
195: var barcode=unescape(document.tokeninput.barcode.value);
196: comp=barcode.split('*');
197: if (typeof(comp[0])!="undefined") {
198: document.tokeninput.codeone.value=comp[0];
199: }
200: if (typeof(comp[1])!="undefined") {
201: document.tokeninput.codetwo.value=comp[1];
202: }
203: if (typeof(comp[2])!="undefined") {
204: comp[2]=comp[2].toUpperCase();
205: document.tokeninput.codethree.value=comp[2];
206: }
207: document.tokeninput.barcode.value='';
208: }
209: </script>
210: <form method="post" name="tokeninput">
1.119 www 211: <table border="2" bgcolor="#FFFFBB">
212: <tr><th>DocID Checkin</th></tr>
213: <tr><td>
214: <table>
215: <tr>
216: <td>Scan in Barcode</td>
1.120 www 217: <td><input type="text" size="22" name="barcode"
218: onChange="updatetoken()"/></td>
1.119 www 219: </tr>
220: <tr><td><i>or</i> Type in DocID</td>
221: <td>
222: <input type="text" size="5" name="codeone" />
1.120 www 223: <b><font size="+2">*</font></b>
1.119 www 224: <input type="text" size="5" name="codetwo" />
1.120 www 225: <b><font size="+2">*</font></b>
226: <input type="text" size="10" name="codethree" value="$defhost"
227: onChange="this.value=this.value.toUpperCase()" />
1.119 www 228: </td></tr>
229: </table>
230: </td></tr>
231: <tr><td><input type="submit" value="Check in DocID" /></td></tr>
232: </table>
233: </form>
234: ENDINPUTFIELD
1.112 www 235: }
236:
1.116 www 237: sub maketoken {
1.118 www 238: my ($symb,$tuname,$tudom,$tcrsid)=@_;
1.112 www 239: unless ($symb) {
240: $symb=&Apache::lonnet::symbread();
241: }
242: unless ($tuname) {
1.372 albertel 243: $tuname=$env{'user.name'};
244: $tudom=$env{'user.domain'};
245: $tcrsid=$env{'request.course.id'};
1.112 www 246: }
1.116 www 247:
1.118 www 248: return &Apache::lonnet::checkout($symb,$tuname,$tudom,$tcrsid);
249: }
250:
251: sub printtokenheader {
1.133 albertel 252: my ($target,$token,$tsymb,$tcrsid,$tudom,$tuname)=@_;
1.116 www 253: unless ($token) { return ''; }
1.118 www 254:
1.423 albertel 255: my ($symb,$courseid,$domain,$name) = &Apache::lonnet::whichuser();
1.133 albertel 256: unless ($tsymb) {
257: $tsymb=$symb;
1.118 www 258: }
259: unless ($tuname) {
1.133 albertel 260: $tuname=$name;
261: $tudom=$domain;
262: $tcrsid=$courseid;
1.118 www 263: }
1.114 www 264:
1.390 albertel 265: my $plainname=&Apache::loncommon::plainname($tuname,$tudom);
1.114 www 266:
1.112 www 267: if ($target eq 'web') {
1.145 www 268: my %idhash=&Apache::lonnet::idrget($tudom,($tuname));
1.115 www 269: return
1.221 albertel 270: '<img align="right" src="/cgi-bin/barcode.png?encode='.$token.'" />'.
1.284 www 271: &mt('Checked out for').' '.$plainname.
272: '<br />'.&mt('User').': '.$tuname.' at '.$tudom.
273: '<br />'.&mt('ID').': '.$idhash{$tuname}.
274: '<br />'.&mt('CourseID').': '.$tcrsid.
1.372 albertel 275: '<br />'.&mt('Course').': '.$env{'course.'.$tcrsid.'.description'}.
1.284 www 276: '<br />'.&mt('DocID').': '.$token.
277: '<br />'.&mt('Time').': '.&Apache::lonlocal::locallocaltime().'<hr />';
1.112 www 278: } else {
1.121 albertel 279: return $token;
1.112 www 280: }
1.68 www 281: }
282:
1.48 albertel 283: sub printalltags {
284: my $temp;
285: foreach $temp (sort keys %Apache::lonxml::alltags) {
1.141 albertel 286: &Apache::lonxml::debug("$temp -- ".
287: join(',',@{ $Apache::lonxml::alltags{$temp} }));
1.48 albertel 288: }
289: }
1.31 sakharuk 290:
1.3 sakharuk 291: sub xmlparse {
1.172 albertel 292: my ($request,$target,$content_file_string,$safeinit,%style_for_target) = @_;
1.96 albertel 293:
1.172 albertel 294: &setup_globals($request,$target);
1.232 albertel 295: &Apache::inputtags::initialize_inputtags();
1.370 albertel 296: &Apache::bridgetask::initialize_bridgetask();
1.232 albertel 297: &Apache::outputtags::initialize_outputtags();
298: &Apache::edit::initialize_edit();
1.287 albertel 299: &Apache::londefdef::initialize_londefdef();
1.244 albertel 300:
1.178 www 301: #
302: # do we have a course style file?
303: #
304:
1.372 albertel 305: if ($env{'request.course.id'} && $env{'request.state'} ne 'construct') {
1.178 www 306: my $bodytext=
1.372 albertel 307: $env{'course.'.$env{'request.course.id'}.'.default_xml_style'};
1.178 www 308: if ($bodytext) {
1.337 albertel 309: foreach my $file (split(',',$bodytext)) {
310: my $location=&Apache::lonnet::filelocation('',$file);
311: my $styletext=&Apache::lonnet::getfile($location);
312: if ($styletext ne '-1') {
313: %style_for_target = (%style_for_target,
314: &Apache::style::styleparser($target,$styletext));
315: }
316: }
317: }
1.372 albertel 318: } elsif ($env{'construct.style'} && ($env{'request.state'} eq 'construct')) {
319: my $location=&Apache::lonnet::filelocation('',$env{'construct.style'});
1.291 sakharuk 320: my $styletext=&Apache::lonnet::getfile($location);
321: if ($styletext ne '-1') {
322: %style_for_target = (%style_for_target,
323: &Apache::style::styleparser($target,$styletext));
324: }
1.178 www 325: }
1.255 sakharuk 326: #&printalltags();
1.16 albertel 327: my @pars = ();
1.372 albertel 328: my $pwd=$env{'request.filename'};
1.23 albertel 329: $pwd =~ s:/[^/]*$::;
330: &newparser(\@pars,\$content_file_string,$pwd);
1.24 sakharuk 331:
1.3 sakharuk 332: my $safeeval = new Safe;
1.40 albertel 333: my $safehole = new Safe::Hole;
1.82 ng 334: &init_safespace($target,$safeeval,$safehole,$safeinit);
1.3 sakharuk 335: #-------------------- Redefinition of the target in the case of compound target
336:
337: ($target, my @tenta) = split('&&',$target);
338:
1.150 albertel 339: my @stack = ();
1.3 sakharuk 340: my @parstack = ();
1.358 albertel 341: &initdepth();
342: &init_alarm();
1.101 albertel 343: my $finaloutput = &inner_xmlparse($target,\@stack,\@parstack,\@pars,
1.394 albertel 344: $safeeval,\%style_for_target,1);
1.255 sakharuk 345:
1.425 albertel 346: if (@stack) {
347: &warning("At end of file some tags were still left unclosed, ".
348: '<tt><'.join('></tt>, <tt><',reverse(@stack)).
349: '></tt>');
350: }
1.372 albertel 351: if ($env{'request.uri'}) {
352: &writeallows($env{'request.uri'});
1.125 www 353: }
1.281 albertel 354: &do_registered_ssi();
1.204 albertel 355: if ($Apache::lonxml::counter_changed) { &store_counter() }
1.393 albertel 356:
357: &clean_safespace($safeeval);
358:
1.372 albertel 359: if ($env{'form.return_only_error_and_warning_counts'}) {
1.361 www 360: return "$errorcount:$warningcount";
361: }
1.3 sakharuk 362: return $finaloutput;
1.106 www 363: }
364:
1.191 albertel 365: sub latex_special_symbols {
1.272 albertel 366: my ($string,$where)=@_;
1.396 foxr 367: #
368: # If e.g. in verbatim mode, then don't substitute.
369: # but return original string.
370: #
371: if (!($Apache::lonxml::substitute_LaTeX_symbols)) {
372: return $string;
373: }
1.235 sakharuk 374: if ($where eq 'header') {
1.414 foxr 375: $string =~ s/\\/\$\\backslash\$/g; # \ -> $\backslash$ per LaTex line by line pg 10.
1.311 albertel 376: $string =~ s/(\$|%|\{|\})/\\$1/g;
377: $string=&Apache::lonprintout::character_chart($string);
378: # any & or # leftover should be safe to just escape
379: $string=~s/([^\\])\&/$1\\\&/g;
380: $string=~s/([^\\])\#/$1\\\#/g;
1.415 foxr 381: $string =~ s/_/\\_/g; # _ -> \_
382: $string =~ s/\^/\\\^{}/g; # ^ -> \^{}
1.229 sakharuk 383: } else {
1.312 albertel 384: $string=~s/\\/\\ensuremath{\\backslash}/g;
1.367 albertel 385: $string=~s/\\\%|\%/\\\%/g;
386: $string=~s/\\{|{/\\{/g;
387: $string=~s/\\}|}/\\}/g;
1.378 albertel 388: $string=~s/\\ensuremath\\{\\backslash\\}/\\ensuremath{\\backslash}/g;
1.367 albertel 389: $string=~s/\\\$|\$/\\\$/g;
390: $string=~s/\\\_|\_/\\\_/g;
1.313 albertel 391: $string=~s/([^\\]|^)(\~|\^)/$1\\$2\\strut /g;
1.310 sakharuk 392: $string=~s/(>|<)/\\ensuremath\{$1\}/g; #more or less
1.311 albertel 393: $string=&Apache::lonprintout::character_chart($string);
394: # any & or # leftover should be safe to just escape
1.367 albertel 395: $string=~s/\\\&|\&/\\\&/g;
396: $string=~s/\\\#|\#/\\\#/g;
1.332 sakharuk 397: $string=~s/\|/\$\\mid\$/g;
1.310 sakharuk 398: #single { or } How to escape?
1.229 sakharuk 399: }
1.272 albertel 400: return $string;
1.188 sakharuk 401: }
402:
1.101 albertel 403: sub inner_xmlparse {
1.394 albertel 404: my ($target,$stack,$parstack,$pars,$safeeval,$style_for_target,$start)=@_;
1.101 albertel 405: my $finaloutput = '';
406: my $result;
407: my $token;
1.258 albertel 408: my $dontpop=0;
1.389 albertel 409: my $startredirection = $Apache::lonxml::redirection;
1.101 albertel 410: while ( $#$pars > -1 ) {
411: while ($token = $$pars['-1']->get_token) {
1.261 albertel 412: if (($token->[0] eq 'T') || ($token->[0] eq 'C') ) {
1.101 albertel 413: if ($metamode<1) {
1.190 albertel 414: my $text=$token->[1];
1.193 albertel 415: if ($token->[0] eq 'C' && $target eq 'tex') {
1.239 sakharuk 416: $text = '';
417: # $text = '%'.$text."\n";
1.182 sakharuk 418: }
1.190 albertel 419: $result.=$text;
1.101 albertel 420: }
1.261 albertel 421: } elsif (($token->[0] eq 'D')) {
422: if ($metamode<1 && $target eq 'web') {
423: my $text=$token->[1];
424: $result.=$text;
425: }
1.101 albertel 426: } elsif ($token->[0] eq 'PI') {
1.261 albertel 427: if ($metamode<1 && $target eq 'web') {
1.101 albertel 428: $result=$token->[2];
429: }
430: } elsif ($token->[0] eq 'S') {
1.140 albertel 431: # add tag to stack
1.101 albertel 432: push (@$stack,$token->[1]);
433: # add parameters list to another stack
434: push (@$parstack,&parstring($token));
1.140 albertel 435: &increasedepth($token);
1.212 albertel 436: if ($Apache::lonxml::usestyle &&
437: exists($$style_for_target{$token->[1]})) {
438: $Apache::lonxml::usestyle=0;
439: my $string=$$style_for_target{$token->[1]}.
440: '<LONCAPA_INTERNAL_TURN_STYLE_ON />';
441: &Apache::lonxml::newparser($pars,\$string);
1.257 albertel 442: $Apache::lonxml::style_values=$$parstack[-1];
1.259 albertel 443: $Apache::lonxml::style_end_values=$$parstack[-1];
1.101 albertel 444: } else {
445: $result = &callsub("start_$token->[1]", $target, $token, $stack,
446: $parstack, $pars, $safeeval, $style_for_target);
1.140 albertel 447: }
1.101 albertel 448: } elsif ($token->[0] eq 'E') {
1.212 albertel 449: if ($Apache::lonxml::usestyle &&
450: exists($$style_for_target{'/'."$token->[1]"})) {
451: $Apache::lonxml::usestyle=0;
452: my $string=$$style_for_target{'/'.$token->[1]}.
1.258 albertel 453: '<LONCAPA_INTERNAL_TURN_STYLE_ON end="'.$token->[1].'" />';
1.212 albertel 454: &Apache::lonxml::newparser($pars,\$string);
1.259 albertel 455: $Apache::lonxml::style_values=$Apache::lonxml::style_end_values;
456: $Apache::lonxml::style_end_values='';
1.258 albertel 457: $dontpop=1;
1.101 albertel 458: } else {
1.258 albertel 459: #clear out any tags that didn't end
460: while ($token->[1] ne $$stack['-1'] && ($#$stack > -1)) {
461: my $lasttag=$$stack[-1];
1.317 albertel 462: if ($token->[1] =~ /^\Q$lasttag\E$/i) {
1.258 albertel 463: &Apache::lonxml::warning('Using tag </'.$token->[1].'> on line '.$token->[3].' as end tag to <'.$$stack[-1].'>');
464: last;
465: } else {
466: &Apache::lonxml::warning('Found tag </'.$token->[1].'> on line '.$token->[3].' when looking for </'.$$stack[-1].'> in file');
467: &end_tag($stack,$parstack,$token);
468: }
469: }
470: $result = &callsub("end_$token->[1]", $target, $token, $stack,
471: $parstack, $pars,$safeeval, $style_for_target);
1.101 albertel 472: }
473: } else {
474: &Apache::lonxml::error("Unknown token event :$token->[0]:$token->[1]:");
475: }
476: #evaluate variable refs in result
1.282 albertel 477: if ($Apache::lonxml::post_evaluate &&$result ne "") {
1.257 albertel 478: my $extras;
479: if (!$Apache::lonxml::usestyle) {
480: $extras=$Apache::lonxml::style_values;
481: }
1.101 albertel 482: if ( $#$parstack > -1 ) {
1.257 albertel 483: $result=&Apache::run::evaluate($result,$safeeval,$extras.$$parstack[-1]);
1.101 albertel 484: } else {
1.257 albertel 485: $result= &Apache::run::evaluate($result,$safeeval,$extras);
1.101 albertel 486: }
1.163 albertel 487: }
1.282 albertel 488: $Apache::lonxml::post_evaluate=1;
489:
1.190 albertel 490: if (($token->[0] eq 'T') || ($token->[0] eq 'C') || ($token->[0] eq 'D') ) {
1.249 albertel 491: #Style file definitions should be correct
1.250 albertel 492: if ($target eq 'tex' && ($Apache::lonxml::usestyle)) {
1.311 albertel 493: $result=&latex_special_symbols($result);
1.249 albertel 494: }
1.190 albertel 495: }
496:
1.169 albertel 497: if ($Apache::lonxml::redirection) {
498: $Apache::lonxml::outputstack['-1'] .= $result;
499: } else {
500: $finaloutput.=$result;
501: }
502: $result = '';
503:
1.258 albertel 504: if ($token->[0] eq 'E' && !$dontpop) {
1.101 albertel 505: &end_tag($stack,$parstack,$token);
506: }
1.258 albertel 507: $dontpop=0;
1.224 albertel 508: }
1.212 albertel 509: if ($#$pars > -1) {
510: pop @$pars;
511: pop @Apache::lonxml::pwd;
512: }
1.101 albertel 513: }
514:
515: # if ($target eq 'meta') {
516: # $finaloutput.=&endredirection;
517: # }
518:
1.394 albertel 519: if ( $start && $target eq 'grade') { &endredirection(); }
1.389 albertel 520: if ( $Apache::lonxml::redirection > $startredirection) {
521: while ($Apache::lonxml::redirection > $startredirection) {
522: $finaloutput .= &endredirection();
1.387 albertel 523: }
524: }
1.101 albertel 525: if (($ENV{'QUERY_STRING'}) && ($target eq 'web')) {
526: $finaloutput=&afterburn($finaloutput);
1.216 sakharuk 527: }
1.101 albertel 528: return $finaloutput;
529: }
1.67 www 530:
1.318 matthew 531: ##
532: ## Looks to see if there is a subroutine defined for this tag. If so, call it,
533: ## otherwise do not call it as we do not know what it is.
534: ##
1.7 albertel 535: sub callsub {
1.84 albertel 536: my ($sub,$target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.7 albertel 537: my $currentstring='';
1.72 albertel 538: my $nodefault;
1.7 albertel 539: {
1.59 albertel 540: my $sub1;
1.7 albertel 541: no strict 'refs';
1.68 www 542: my $tag=$token->[1];
1.236 www 543: # get utterly rid of extended html tags
544: if ($tag=~/^x\-/i) { return ''; }
1.141 albertel 545: my $space=$Apache::lonxml::alltags{$tag}[-1];
1.68 www 546: if (!$space) {
1.141 albertel 547: $tag=~tr/A-Z/a-z/;
1.68 www 548: $sub=~tr/A-Z/a-z/;
1.141 albertel 549: $space=$Apache::lonxml::alltags{$tag}[-1]
1.68 www 550: }
1.97 albertel 551:
552: my $deleted=0;
553: $Apache::lonxml::curdepth=join('_',@Apache::lonxml::depthcounter);
554: if (($token->[0] eq 'S') && ($target eq 'modified')) {
555: $deleted=&Apache::edit::handle_delete($space,$target,$token,$tagstack,
556: $parstack,$parser,$safeeval,
557: $style);
558: }
559: if (!$deleted) {
560: if ($space) {
1.220 albertel 561: #&Apache::lonxml::debug("Calling sub $sub in $space $metamode");
1.97 albertel 562: $sub1="$space\:\:$sub";
563: ($currentstring,$nodefault) = &$sub1($target,$token,$tagstack,
564: $parstack,$parser,$safeeval,
565: $style);
566: } else {
1.318 matthew 567: if ($target eq 'tex') {
568: # throw away tag name
569: return '';
570: }
1.220 albertel 571: #&Apache::lonxml::debug("NOT Calling sub $sub in $space $metamode");
1.97 albertel 572: if ($metamode <1) {
573: if (defined($token->[4]) && ($metamode < 1)) {
574: $currentstring = $token->[4];
575: } else {
576: $currentstring = $token->[2];
577: }
1.62 sakharuk 578: }
1.7 albertel 579: }
1.97 albertel 580: # &Apache::lonxml::debug("nodefalt:$nodefault:");
581: if ($currentstring eq '' && $nodefault eq '') {
582: if ($target eq 'edit') {
1.220 albertel 583: #&Apache::lonxml::debug("doing default edit for $token->[1]");
1.97 albertel 584: if ($token->[0] eq 'S') {
585: $currentstring = &Apache::edit::tag_start($target,$token);
586: } elsif ($token->[0] eq 'E') {
587: $currentstring = &Apache::edit::tag_end($target,$token);
588: }
589: } elsif ($target eq 'modified') {
590: if ($token->[0] eq 'S') {
591: $currentstring = $token->[4];
592: $currentstring.=&Apache::edit::handle_insert();
1.210 www 593: } elsif ($token->[0] eq 'E') {
594: $currentstring = $token->[2];
595: $currentstring.=&Apache::edit::handle_insertafter($token->[1]);
1.97 albertel 596: } else {
597: $currentstring = $token->[2];
598: }
1.72 albertel 599: }
600: }
1.7 albertel 601: }
602: use strict 'refs';
603: }
604: return $currentstring;
1.82 ng 605: }
606:
1.96 albertel 607: sub setup_globals {
1.172 albertel 608: my ($request,$target)=@_;
609: $Apache::lonxml::request=$request;
1.205 www 610: $errorcount=0;
611: $warningcount=0;
1.207 albertel 612: $Apache::lonxml::default_homework_loaded=0;
1.212 albertel 613: $Apache::lonxml::usestyle=1;
1.204 albertel 614: &init_counter();
1.101 albertel 615: @Apache::lonxml::pwd=();
1.124 albertel 616: @Apache::lonxml::extlinks=();
1.281 albertel 617: @Apache::lonxml::ssi_info=();
1.282 albertel 618: $Apache::lonxml::post_evaluate=1;
1.295 albertel 619: $Apache::lonxml::warnings_error_header='';
1.397 albertel 620: $Apache::lonxml::substitute_LaTeX_symbols = 1;
1.96 albertel 621: if ($target eq 'meta') {
622: $Apache::lonxml::redirection = 0;
623: $Apache::lonxml::metamode = 1;
624: $Apache::lonxml::evaluate = 1;
625: $Apache::lonxml::import = 0;
1.129 albertel 626: } elsif ($target eq 'answer') {
627: $Apache::lonxml::redirection = 0;
628: $Apache::lonxml::metamode = 1;
629: $Apache::lonxml::evaluate = 1;
630: $Apache::lonxml::import = 1;
1.96 albertel 631: } elsif ($target eq 'grade') {
1.387 albertel 632: &startredirection(); #ended in inner_xmlparse on exit
1.96 albertel 633: $Apache::lonxml::metamode = 0;
634: $Apache::lonxml::evaluate = 1;
635: $Apache::lonxml::import = 1;
636: } elsif ($target eq 'modified') {
637: $Apache::lonxml::redirection = 0;
638: $Apache::lonxml::metamode = 0;
639: $Apache::lonxml::evaluate = 0;
640: $Apache::lonxml::import = 0;
641: } elsif ($target eq 'edit') {
642: $Apache::lonxml::redirection = 0;
643: $Apache::lonxml::metamode = 0;
644: $Apache::lonxml::evaluate = 0;
645: $Apache::lonxml::import = 0;
1.163 albertel 646: } elsif ($target eq 'analyze') {
647: $Apache::lonxml::redirection = 0;
648: $Apache::lonxml::metamode = 0;
649: $Apache::lonxml::evaluate = 1;
650: $Apache::lonxml::import = 1;
1.96 albertel 651: } else {
652: $Apache::lonxml::redirection = 0;
653: $Apache::lonxml::metamode = 0;
654: $Apache::lonxml::evaluate = 1;
655: $Apache::lonxml::import = 1;
656: }
657: }
658:
1.82 ng 659: sub init_safespace {
660: my ($target,$safeeval,$safehole,$safeinit) = @_;
1.393 albertel 661: $safeeval->deny_only(':dangerous');
662: $safeeval->reval('use Math::Complex;');
1.383 albertel 663: $safeeval->permit_only(":default");
1.82 ng 664: $safeeval->permit("entereval");
665: $safeeval->permit(":base_math");
666: $safeeval->permit("sort");
1.286 albertel 667: $safeeval->permit("time");
1.371 albertel 668: $safeeval->deny("rand");
669: $safeeval->deny("srand");
1.82 ng 670: $safeeval->deny(":base_io");
1.102 albertel 671: $safehole->wrap(\&Apache::scripttag::xmlparse,$safeeval,'&xmlparse');
1.251 albertel 672: $safehole->wrap(\&Apache::outputtags::multipart,$safeeval,'&multipart');
1.82 ng 673: $safehole->wrap(\&Apache::lonnet::EXT,$safeeval,'&EXT');
1.324 albertel 674: $safehole->wrap(\&Apache::chemresponse::chem_standard_order,$safeeval,
675: '&chem_standard_order');
1.369 albertel 676: $safehole->wrap(\&Apache::response::check_status,$safeeval,'&check_status');
1.324 albertel 677:
1.431 ! www 678: $safehole->wrap(\&Apache::lonmaxima::maxima_eval,$safeeval,'&maxima_eval');
! 679:
1.82 ng 680: $safehole->wrap(\&Math::Cephes::asin,$safeeval,'&asin');
681: $safehole->wrap(\&Math::Cephes::acos,$safeeval,'&acos');
682: $safehole->wrap(\&Math::Cephes::atan,$safeeval,'&atan');
683: $safehole->wrap(\&Math::Cephes::sinh,$safeeval,'&sinh');
684: $safehole->wrap(\&Math::Cephes::cosh,$safeeval,'&cosh');
685: $safehole->wrap(\&Math::Cephes::tanh,$safeeval,'&tanh');
686: $safehole->wrap(\&Math::Cephes::asinh,$safeeval,'&asinh');
687: $safehole->wrap(\&Math::Cephes::acosh,$safeeval,'&acosh');
688: $safehole->wrap(\&Math::Cephes::atanh,$safeeval,'&atanh');
689: $safehole->wrap(\&Math::Cephes::erf,$safeeval,'&erf');
690: $safehole->wrap(\&Math::Cephes::erfc,$safeeval,'&erfc');
691: $safehole->wrap(\&Math::Cephes::j0,$safeeval,'&j0');
692: $safehole->wrap(\&Math::Cephes::j1,$safeeval,'&j1');
693: $safehole->wrap(\&Math::Cephes::jn,$safeeval,'&jn');
694: $safehole->wrap(\&Math::Cephes::jv,$safeeval,'&jv');
695: $safehole->wrap(\&Math::Cephes::y0,$safeeval,'&y0');
696: $safehole->wrap(\&Math::Cephes::y1,$safeeval,'&y1');
697: $safehole->wrap(\&Math::Cephes::yn,$safeeval,'&yn');
698: $safehole->wrap(\&Math::Cephes::yv,$safeeval,'&yv');
1.215 albertel 699:
700: $safehole->wrap(\&Math::Cephes::bdtr ,$safeeval,'&bdtr' );
701: $safehole->wrap(\&Math::Cephes::bdtrc ,$safeeval,'&bdtrc' );
702: $safehole->wrap(\&Math::Cephes::bdtri ,$safeeval,'&bdtri' );
703: $safehole->wrap(\&Math::Cephes::btdtr ,$safeeval,'&btdtr' );
704: $safehole->wrap(\&Math::Cephes::chdtr ,$safeeval,'&chdtr' );
705: $safehole->wrap(\&Math::Cephes::chdtrc,$safeeval,'&chdtrc');
706: $safehole->wrap(\&Math::Cephes::chdtri,$safeeval,'&chdtri');
707: $safehole->wrap(\&Math::Cephes::fdtr ,$safeeval,'&fdtr' );
708: $safehole->wrap(\&Math::Cephes::fdtrc ,$safeeval,'&fdtrc' );
709: $safehole->wrap(\&Math::Cephes::fdtri ,$safeeval,'&fdtri' );
710: $safehole->wrap(\&Math::Cephes::gdtr ,$safeeval,'&gdtr' );
711: $safehole->wrap(\&Math::Cephes::gdtrc ,$safeeval,'&gdtrc' );
712: $safehole->wrap(\&Math::Cephes::nbdtr ,$safeeval,'&nbdtr' );
713: $safehole->wrap(\&Math::Cephes::nbdtrc,$safeeval,'&nbdtrc');
714: $safehole->wrap(\&Math::Cephes::nbdtri,$safeeval,'&nbdtri');
715: $safehole->wrap(\&Math::Cephes::ndtr ,$safeeval,'&ndtr' );
716: $safehole->wrap(\&Math::Cephes::ndtri ,$safeeval,'&ndtri' );
717: $safehole->wrap(\&Math::Cephes::pdtr ,$safeeval,'&pdtr' );
718: $safehole->wrap(\&Math::Cephes::pdtrc ,$safeeval,'&pdtrc' );
719: $safehole->wrap(\&Math::Cephes::pdtri ,$safeeval,'&pdtri' );
720: $safehole->wrap(\&Math::Cephes::stdtr ,$safeeval,'&stdtr' );
721: $safehole->wrap(\&Math::Cephes::stdtri,$safeeval,'&stdtri');
722:
1.383 albertel 723: $safehole->wrap(\&Math::Cephes::Matrix::mat,$safeeval,'&mat');
724: $safehole->wrap(\&Math::Cephes::Matrix::new,$safeeval,
725: '&Math::Cephes::Matrix::new');
726: $safehole->wrap(\&Math::Cephes::Matrix::coef,$safeeval,
727: '&Math::Cephes::Matrix::coef');
728: $safehole->wrap(\&Math::Cephes::Matrix::clr,$safeeval,
729: '&Math::Cephes::Matrix::clr');
730: $safehole->wrap(\&Math::Cephes::Matrix::add,$safeeval,
731: '&Math::Cephes::Matrix::add');
732: $safehole->wrap(\&Math::Cephes::Matrix::sub,$safeeval,
733: '&Math::Cephes::Matrix::sub');
734: $safehole->wrap(\&Math::Cephes::Matrix::mul,$safeeval,
735: '&Math::Cephes::Matrix::mul');
736: $safehole->wrap(\&Math::Cephes::Matrix::div,$safeeval,
737: '&Math::Cephes::Matrix::div');
738: $safehole->wrap(\&Math::Cephes::Matrix::inv,$safeeval,
739: '&Math::Cephes::Matrix::inv');
740: $safehole->wrap(\&Math::Cephes::Matrix::transp,$safeeval,
741: '&Math::Cephes::Matrix::transp');
742: $safehole->wrap(\&Math::Cephes::Matrix::simq,$safeeval,
743: '&Math::Cephes::Matrix::simq');
744: $safehole->wrap(\&Math::Cephes::Matrix::mat_to_vec,$safeeval,
745: '&Math::Cephes::Matrix::mat_to_vec');
746: $safehole->wrap(\&Math::Cephes::Matrix::vec_to_mat,$safeeval,
747: '&Math::Cephes::Matrix::vec_to_mat');
748: $safehole->wrap(\&Math::Cephes::Matrix::check,$safeeval,
749: '&Math::Cephes::Matrix::check');
750: $safehole->wrap(\&Math::Cephes::Matrix::check,$safeeval,
751: '&Math::Cephes::Matrix::check');
752:
1.215 albertel 753: # $safehole->wrap(\&Math::Cephes::new_fract,$safeeval,'&new_fract');
754: # $safehole->wrap(\&Math::Cephes::radd,$safeeval,'&radd');
755: # $safehole->wrap(\&Math::Cephes::rsub,$safeeval,'&rsub');
756: # $safehole->wrap(\&Math::Cephes::rmul,$safeeval,'&rmul');
757: # $safehole->wrap(\&Math::Cephes::rdiv,$safeeval,'&rdiv');
758: # $safehole->wrap(\&Math::Cephes::euclid,$safeeval,'&euclid');
759:
1.91 ng 760: $safehole->wrap(\&Math::Random::random_beta,$safeeval,'&math_random_beta');
761: $safehole->wrap(\&Math::Random::random_chi_square,$safeeval,'&math_random_chi_square');
762: $safehole->wrap(\&Math::Random::random_exponential,$safeeval,'&math_random_exponential');
763: $safehole->wrap(\&Math::Random::random_f,$safeeval,'&math_random_f');
764: $safehole->wrap(\&Math::Random::random_gamma,$safeeval,'&math_random_gamma');
765: $safehole->wrap(\&Math::Random::random_multivariate_normal,$safeeval,'&math_random_multivariate_normal');
766: $safehole->wrap(\&Math::Random::random_multinomial,$safeeval,'&math_random_multinomial');
767: $safehole->wrap(\&Math::Random::random_noncentral_chi_square,$safeeval,'&math_random_noncentral_chi_square');
768: $safehole->wrap(\&Math::Random::random_noncentral_f,$safeeval,'&math_random_noncentral_f');
769: $safehole->wrap(\&Math::Random::random_normal,$safeeval,'&math_random_normal');
770: $safehole->wrap(\&Math::Random::random_permutation,$safeeval,'&math_random_permutation');
1.93 ng 771: $safehole->wrap(\&Math::Random::random_permuted_index,$safeeval,'&math_random_permuted_index');
1.91 ng 772: $safehole->wrap(\&Math::Random::random_uniform,$safeeval,'&math_random_uniform');
773: $safehole->wrap(\&Math::Random::random_poisson,$safeeval,'&math_random_poisson');
774: $safehole->wrap(\&Math::Random::random_uniform_integer,$safeeval,'&math_random_uniform_integer');
775: $safehole->wrap(\&Math::Random::random_negative_binomial,$safeeval,'&math_random_negative_binomial');
776: $safehole->wrap(\&Math::Random::random_binomial,$safeeval,'&math_random_binomial');
777: $safehole->wrap(\&Math::Random::random_seed_from_phrase,$safeeval,'&random_seed_from_phrase');
778: $safehole->wrap(\&Math::Random::random_set_seed_from_phrase,$safeeval,'&random_set_seed_from_phrase');
779: $safehole->wrap(\&Math::Random::random_get_seed,$safeeval,'&random_get_seed');
780: $safehole->wrap(\&Math::Random::random_set_seed,$safeeval,'&random_set_seed');
1.305 albertel 781: $safehole->wrap(\&Apache::lonxml::error,$safeeval,'&LONCAPA_INTERNAL_ERROR');
1.311 albertel 782: $safehole->wrap(\&Apache::lonxml::debug,$safeeval,'&LONCAPA_INTERNAL_DEBUG');
1.420 albertel 783: $safehole->wrap(\&Apache::lonnet::logthis,$safeeval,'&LONCAPA_INTERNAL_LOGTHIS');
784: $safehole->wrap(\&Apache::inputtags::finalizeawards,$safeeval,'&LONCAPA_INTERNAL_FINALIZEAWARDS');
1.322 albertel 785: $safehole->wrap(\&Apache::caparesponse::get_sigrange,$safeeval,'&LONCAPA_INTERNAL_get_sigrange');
1.430 albertel 786: # use Data::Dumper;
787: # $safehole->wrap(\&Data::Dumper::Dumper,$safeeval,'&LONCAPA_INTERNAL_Dumper');
1.82 ng 788: #need to inspect this class of ops
789: # $safeeval->deny(":base_orig");
1.331 albertel 790: $safeeval->permit("require");
1.91 ng 791: $safeinit .= ';$external::target="'.$target.'";';
1.82 ng 792: &Apache::run::run($safeinit,$safeeval);
1.373 albertel 793: &initialize_rndseed($safeeval);
794: }
1.303 albertel 795:
1.393 albertel 796: sub clean_safespace {
797: my ($safeeval) = @_;
798: delete_package_recurse($safeeval->{Root});
799: }
800:
801: sub delete_package_recurse {
802: my ($package) = @_;
803: my @subp;
804: {
805: no strict 'refs';
806: while (my ($key,$val) = each(%{*{"$package\::"}})) {
807: if (!defined($val)) { next; }
808: local (*ENTRY) = $val;
809: if (defined *ENTRY{HASH} && $key =~ /::$/ &&
810: $key ne "main::" && $key ne "<none>::")
811: {
812: my ($p) = $package ne "main" ? "$package\::" : "";
813: ($p .= $key) =~ s/::$//;
814: push(@subp,$p);
815: }
816: }
817: }
818: foreach my $p (@subp) {
819: delete_package_recurse($p);
820: }
821: Symbol::delete_package($package);
822: }
823:
1.373 albertel 824: sub initialize_rndseed {
825: my ($safeeval)=@_;
826: my $rndseed;
1.423 albertel 827: my ($symb,$courseid,$domain,$name) = &Apache::lonnet::whichuser();
1.373 albertel 828: $rndseed=&Apache::lonnet::rndseed($symb,$courseid,$domain,$name);
829: my $safeinit = '$external::randomseed="'.$rndseed.'";';
830: &Apache::lonxml::debug("Setting rndseed to $rndseed");
831: &Apache::run::run($safeinit,$safeeval);
1.207 albertel 832: }
833:
834: sub default_homework_load {
835: my ($safeeval)=@_;
836: &Apache::lonxml::debug('Loading default_homework');
837: my $default=&Apache::lonnet::getfile('/home/httpd/html/res/adm/includes/default_homework.lcpm');
1.241 albertel 838: if ($default eq -1) {
1.207 albertel 839: &Apache::lonxml::error("<b>Unable to find <i>default_homework.lcpm</i></b>");
840: } else {
841: &Apache::run::run($default,$safeeval);
842: $Apache::lonxml::default_homework_loaded=1;
843: }
1.17 albertel 844: }
845:
1.358 albertel 846: {
847: my $alarm_depth;
848: sub init_alarm {
849: alarm(0);
850: $alarm_depth=0;
851: }
852:
853: sub start_alarm {
854: if ($alarm_depth<1) {
855: my $old=alarm($Apache::lonnet::perlvar{'lonScriptTimeout'});
856: if ($old) {
857: &Apache::lonxml::error("Cancelled an alarm of $old, this shouldn't occur.");
858: }
859: }
860: $alarm_depth++;
861: }
862:
863: sub end_alarm {
864: $alarm_depth--;
865: if ($alarm_depth<1) { alarm(0); }
866: }
867: }
1.328 albertel 868: my $metamode_was;
1.55 albertel 869: sub startredirection {
1.328 albertel 870: if (!$Apache::lonxml::redirection) {
871: $metamode_was=$Apache::lonxml::metamode;
872: }
873: $Apache::lonxml::metamode=0;
874: $Apache::lonxml::redirection++;
875: push (@Apache::lonxml::outputstack, '');
1.55 albertel 876: }
877:
878: sub endredirection {
1.328 albertel 879: if (!$Apache::lonxml::redirection) {
1.380 www 880: &Apache::lonxml::error("Endredirection was called before a startredirection, perhaps you have unbalanced tags. Some debugging information:".join ":",caller);
1.328 albertel 881: return '';
882: }
883: $Apache::lonxml::redirection--;
884: if (!$Apache::lonxml::redirection) {
885: $Apache::lonxml::metamode=$metamode_was;
886: }
887: pop @Apache::lonxml::outputstack;
1.97 albertel 888: }
889:
890: sub end_tag {
891: my ($tagstack,$parstack,$token)=@_;
892: pop(@$tagstack);
893: pop(@$parstack);
894: &decreasedepth($token);
1.55 albertel 895: }
896:
1.17 albertel 897: sub initdepth {
898: @Apache::lonxml::depthcounter=();
899: $Apache::lonxml::depth=-1;
900: $Apache::lonxml::olddepth=-1;
901: }
902:
1.339 albertel 903: my @timers;
904: my $lasttime;
1.17 albertel 905: sub increasedepth {
1.19 albertel 906: my ($token) = @_;
1.17 albertel 907: $Apache::lonxml::depth++;
908: $Apache::lonxml::depthcounter[$Apache::lonxml::depth]++;
909: if ($Apache::lonxml::depthcounter[$Apache::lonxml::depth]==1) {
910: $Apache::lonxml::olddepth=$Apache::lonxml::depth;
911: }
1.340 albertel 912: my $time;
913: if ($Apache::lonxml::debug eq "1") {
914: push(@timers,[&gettimeofday()]);
915: $time=&tv_interval($lasttime);
916: $lasttime=[&gettimeofday()];
917: }
1.339 albertel 918: my $spacing=' 'x($Apache::lonxml::depth-1);
1.42 albertel 919: my $curdepth=join('_',@Apache::lonxml::depthcounter);
1.339 albertel 920: &Apache::lonxml::debug("s$spacing$Apache::lonxml::depth : $Apache::lonxml::olddepth : $curdepth : $token->[1] : $time : \n");
1.54 albertel 921: #print "<br />s $Apache::lonxml::depth : $Apache::lonxml::olddepth : $curdepth : $token->[1]\n";
1.17 albertel 922: }
923:
924: sub decreasedepth {
1.19 albertel 925: my ($token) = @_;
1.17 albertel 926: $Apache::lonxml::depth--;
1.36 albertel 927: if ($Apache::lonxml::depth<$Apache::lonxml::olddepth-1) {
928: $#Apache::lonxml::depthcounter--;
929: $Apache::lonxml::olddepth=$Apache::lonxml::depth+1;
930: }
1.43 albertel 931: if ( $Apache::lonxml::depth < -1) {
1.280 www 932: &Apache::lonxml::warning(&mt("Missing tags, unable to properly run file."));
1.43 albertel 933: $Apache::lonxml::depth='-1';
934: }
1.340 albertel 935: my ($timer,$time);
936: if ($Apache::lonxml::debug eq "1") {
937: $timer=pop(@timers);
938: $time=&tv_interval($lasttime);
939: $lasttime=[&gettimeofday()];
940: }
1.339 albertel 941: my $spacing=' 'x$Apache::lonxml::depth;
1.42 albertel 942: my $curdepth=join('_',@Apache::lonxml::depthcounter);
1.339 albertel 943: &Apache::lonxml::debug("e$spacing$Apache::lonxml::depth : $Apache::lonxml::olddepth : $curdepth : $token->[1] : $time : ".&tv_interval($timer)."\n");
1.54 albertel 944: #print "<br />e $Apache::lonxml::depth : $Apache::lonxml::olddepth : $token->[1] : $curdepth\n";
1.1 sakharuk 945: }
1.19 albertel 946:
1.399 albertel 947: sub get_id {
948: my ($parstack,$safeeval)=@_;
949: my $id= &Apache::lonxml::get_param('id',$parstack,$safeeval);
950: if ($env{'request.state'} eq 'construct' && $id =~ /(\.|_)/) {
951: &error(&mt("IDs are not allowed to contain "<tt>_</tt>" or "<tt>.</tt>""));
952: }
953: if ($id =~ /^\s*$/) { $id = $Apache::lonxml::curdepth; }
954: return $id;
955: }
956:
1.180 albertel 957: sub get_all_text_unbalanced {
1.190 albertel 958: #there is a copy of this in lonpublisher.pm
1.326 albertel 959: my($tag,$pars)= @_;
960: my $token;
961: my $result='';
962: $tag='<'.$tag.'>';
963: while ($token = $$pars[-1]->get_token) {
964: if (($token->[0] eq 'T')||($token->[0] eq 'C')||($token->[0] eq 'D')) {
1.386 albertel 965: if ($token->[0] eq 'T' && $token->[2]) {
1.382 albertel 966: $result.='<![CDATA['.$token->[1].']]>';
967: } else {
968: $result.=$token->[1];
969: }
1.326 albertel 970: } elsif ($token->[0] eq 'PI') {
971: $result.=$token->[2];
972: } elsif ($token->[0] eq 'S') {
973: $result.=$token->[4];
974: } elsif ($token->[0] eq 'E') {
975: $result.=$token->[2];
976: }
977: if ($result =~ /\Q$tag\E/is) {
978: ($result,my $redo)=$result =~ /(.*)\Q$tag\E(.*)/is;
979: #&Apache::lonxml::debug('Got a winner with leftovers ::'.$2);
980: #&Apache::lonxml::debug('Result is :'.$1);
981: $redo=$tag.$redo;
982: &Apache::lonxml::newparser($pars,\$redo);
983: last;
984: }
985: }
986: return $result
1.204 albertel 987: }
988:
989: sub increment_counter {
1.247 albertel 990: my ($increment) = @_;
1.289 sakharuk 991: if (defined($increment) && $increment gt 0) {
992: $Apache::lonxml::counter+=$increment;
993: } else {
994: $Apache::lonxml::counter++;
1.247 albertel 995: }
1.289 sakharuk 996: $Apache::lonxml::counter_changed=1;
1.204 albertel 997: }
998:
999: sub init_counter {
1.391 albertel 1000: if ($env{'request.state'} eq 'construct') {
1001: $Apache::lonxml::counter=1;
1002: $Apache::lonxml::counter_changed=1;
1003: } elsif (defined($env{'form.counter'})) {
1.372 albertel 1004: $Apache::lonxml::counter=$env{'form.counter'};
1.247 albertel 1005: $Apache::lonxml::counter_changed=0;
1.237 sakharuk 1006: } else {
1.204 albertel 1007: $Apache::lonxml::counter=1;
1.247 albertel 1008: $Apache::lonxml::counter_changed=1;
1.204 albertel 1009: }
1010: }
1011:
1012: sub store_counter {
1013: &Apache::lonnet::appenv(('form.counter' => $Apache::lonxml::counter));
1.401 albertel 1014: $Apache::lonxml::counter_changed=0;
1.204 albertel 1015: return '';
1.180 albertel 1016: }
1017:
1.398 albertel 1018: {
1019: my $state;
1020: sub clear_problem_counter {
1021: undef($state);
1022: &Apache::lonnet::delenv('form.counter');
1023: &Apache::lonxml::init_counter();
1024: &Apache::lonxml::store_counter();
1025: }
1026:
1027: sub remember_problem_counter {
1.422 albertel 1028: &Apache::lonnet::transfer_profile_to_env(undef,undef,1);
1.398 albertel 1029: $state = $env{'form.counter'};
1030: }
1031:
1032: sub restore_problem_counter {
1033: if (defined($state)) {
1034: &Apache::lonnet::appenv(('form.counter' => $state));
1035: }
1036: }
1.401 albertel 1037: sub get_problem_counter {
1038: if ($Apache::lonxml::counter_changed) { &store_counter() }
1.422 albertel 1039: &Apache::lonnet::transfer_profile_to_env(undef,undef,1);
1.401 albertel 1040: return $env{'form.counter'};
1041: }
1.398 albertel 1042: }
1043:
1.19 albertel 1044: sub get_all_text {
1.270 albertel 1045: my($tag,$pars,$style)= @_;
1046: my $gotfullstack=1;
1047: if (ref($pars) ne 'ARRAY') {
1048: $gotfullstack=0;
1049: $pars=[$pars];
1050: }
1051: if (ref($style) ne 'HASH') {
1052: $style={};
1053: }
1054: my $depth=0;
1055: my $token;
1056: my $result='';
1057: if ( $tag =~ m:^/: ) {
1058: my $tag=substr($tag,1);
1059: #&Apache::lonxml::debug("have:$tag:");
1060: my $top_empty=0;
1061: while (($depth >=0) && ($#$pars > -1) && (!$top_empty)) {
1062: while (($depth >=0) && ($token = $$pars[-1]->get_token)) {
1063: #&Apache::lonxml::debug("e token:$token->[0]:$depth:$token->[1]:".$#$pars.":".$#Apache::lonxml::pwd);
1064: if (($token->[0] eq 'T')||($token->[0] eq 'C')||($token->[0] eq 'D')) {
1.382 albertel 1065: if ($token->[2]) {
1066: $result.='<![CDATA['.$token->[1].']]>';
1067: } else {
1068: $result.=$token->[1];
1069: }
1.270 albertel 1070: } elsif ($token->[0] eq 'PI') {
1071: $result.=$token->[2];
1072: } elsif ($token->[0] eq 'S') {
1.316 albertel 1073: if ($token->[1] =~ /^\Q$tag\E$/i) { $depth++; }
1074: if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_ON$/) { $Apache::lonxml::usestyle=1; }
1075: if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_OFF$/) { $Apache::lonxml::usestyle=0; }
1.270 albertel 1076: $result.=$token->[4];
1077: } elsif ($token->[0] eq 'E') {
1.316 albertel 1078: if ( $token->[1] =~ /^\Q$tag\E$/i) { $depth--; }
1.270 albertel 1079: #skip sending back the last end tag
1.283 albertel 1080: if ($depth == 0 && exists($$style{'/'.$token->[1]}) && $Apache::lonxml::usestyle) {
1.270 albertel 1081: my $string=
1082: '<LONCAPA_INTERNAL_TURN_STYLE_OFF end="yes" />'.
1083: $$style{'/'.$token->[1]}.
1084: $token->[2].
1085: '<LONCAPA_INTERNAL_TURN_STYLE_ON />';
1086: &Apache::lonxml::newparser($pars,\$string);
1087: #&Apache::lonxml::debug("reParsing $string");
1088: next;
1089: }
1090: if ($depth > -1) {
1091: $result.=$token->[2];
1092: } else {
1093: $$pars[-1]->unget_token($token);
1094: }
1095: }
1096: }
1097: if (($depth >=0) && ($#$pars == 0) ) { $top_empty=1; }
1098: if (($depth >=0) && ($#$pars > 0) ) {
1099: pop(@$pars);
1100: pop(@Apache::lonxml::pwd);
1101: }
1102: }
1103: if ($top_empty && $depth >= 0) {
1104: #never found the end tag ran out of text, throw error send back blank
1105: &error('Never found end tag for <'.$tag.
1106: '> current string <pre>'.
1.314 albertel 1107: &HTML::Entities::encode($result,'<>&"').
1.270 albertel 1108: '</pre>');
1109: if ($gotfullstack) {
1110: my $newstring='</'.$tag.'>'.$result;
1111: &Apache::lonxml::newparser($pars,\$newstring);
1112: }
1113: $result='';
1114: }
1115: } else {
1116: while ($#$pars > -1) {
1117: while ($token = $$pars[-1]->get_token) {
1118: #&Apache::lonxml::debug("s token:$token->[0]:$depth:$token->[1]");
1119: if (($token->[0] eq 'T')||($token->[0] eq 'C')||
1120: ($token->[0] eq 'D')) {
1.382 albertel 1121: if ($token->[2]) {
1122: $result.='<![CDATA['.$token->[1].']]>';
1123: } else {
1124: $result.=$token->[1];
1125: }
1.270 albertel 1126: } elsif ($token->[0] eq 'PI') {
1127: $result.=$token->[2];
1128: } elsif ($token->[0] eq 'S') {
1.316 albertel 1129: if ( $token->[1] =~ /^\Q$tag\E$/i) {
1.270 albertel 1130: $$pars[-1]->unget_token($token); last;
1131: } else {
1132: $result.=$token->[4];
1133: }
1.316 albertel 1134: if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_ON$/) { $Apache::lonxml::usestyle=1; }
1135: if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_OFF$/) { $Apache::lonxml::usestyle=0; }
1.270 albertel 1136: } elsif ($token->[0] eq 'E') {
1137: $result.=$token->[2];
1138: }
1139: }
1140: if (($#$pars > 0) ) {
1141: pop(@$pars);
1142: pop(@Apache::lonxml::pwd);
1143: } else { last; }
1144: }
1145: }
1146: #&Apache::lonxml::debug("Exit:$result:");
1147: return $result
1.19 albertel 1148: }
1149:
1.23 albertel 1150: sub newparser {
1151: my ($parser,$contentref,$dir) = @_;
1.167 albertel 1152: push (@$parser,HTML::LCParser->new($contentref));
1.365 albertel 1153: $$parser[-1]->xml_mode(1);
1154: $$parser[-1]->marked_sections(1);
1.23 albertel 1155: if ( $dir eq '' ) {
1156: push (@Apache::lonxml::pwd, $Apache::lonxml::pwd[$#Apache::lonxml::pwd]);
1157: } else {
1158: push (@Apache::lonxml::pwd, $dir);
1159: }
1160: }
1.1 sakharuk 1161:
1.8 albertel 1162: sub parstring {
1.417 albertel 1163: my ($token) = @_;
1164: my (@vars,@values);
1165: foreach my $attr (@{$token->[3]}) {
1166: if ($attr!~/\W/) {
1167: my $val=$token->[2]->{$attr};
1168: $val =~ s/([\%\@\\\"\'])/\\$1/g;
1169: $val =~ s/(\$[^\{a-zA-Z_])/\\$1/g;
1170: $val =~ s/(\$)$/\\$1/;
1171: #if ($val =~ m/^[\%\@]/) { $val="\\".$val; }
1172: push(@vars,"\$$attr");
1173: push(@values,"\"$val\"");
1174: }
1175: }
1176: my $var_init =
1177: (@vars) ? 'my ('.join(',',@vars).') = ('.join(',',@values).');'
1178: : '';
1179: return $var_init;
1.8 albertel 1180: }
1.22 albertel 1181:
1.384 albertel 1182: sub extlink {
1183: my ($res,$exact)=@_;
1184: if (!$exact) {
1185: $res=&Apache::lonnet::hreflocation($Apache::lonxml::pwd[-1],$res);
1186: }
1187: push(@Apache::lonxml::extlinks,$res)
1188: }
1189:
1.34 www 1190: sub writeallows {
1.126 www 1191: unless ($#extlinks>=0) { return; }
1.377 albertel 1192: my $thisurl = &Apache::lonnet::clutter(shift);
1.372 albertel 1193: if ($env{'httpref.'.$thisurl}) {
1194: $thisurl=$env{'httpref.'.$thisurl};
1.111 www 1195: }
1.34 www 1196: my $thisdir=$thisurl;
1197: $thisdir=~s/\/[^\/]+$//;
1198: my %httpref=();
1.142 albertel 1199: foreach (@extlinks) {
1.34 www 1200: $httpref{'httpref.'.
1.125 www 1201: &Apache::lonnet::hreflocation($thisdir,$_)}=$thisurl;
1.142 albertel 1202: }
1.126 www 1203: @extlinks=();
1.34 www 1204: &Apache::lonnet::appenv(%httpref);
1205: }
1206:
1.281 albertel 1207: sub register_ssi {
1208: my ($url,%form)=@_;
1209: push (@Apache::lonxml::ssi_info,{'url'=>$url,'form'=>\%form});
1210: return '';
1211: }
1212:
1213: sub do_registered_ssi {
1214: foreach my $info (@Apache::lonxml::ssi_info) {
1215: my %form=%{ $info->{'form'}};
1216: my $url=$info->{'url'};
1217: &Apache::lonnet::ssi($url,%form);
1218: }
1219: }
1.66 www 1220: #
1221: # Afterburner handles anchors, highlights and links
1222: #
1223: sub afterburn {
1224: my $result=shift;
1.154 albertel 1225: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
1226: ['highlight','anchor','link']);
1.372 albertel 1227: if ($env{'form.highlight'}) {
1228: foreach (split(/\,/,$env{'form.highlight'})) {
1.66 www 1229: my $anchorname=$_;
1230: my $matchthis=$anchorname;
1231: $matchthis=~s/\_+/\\s\+/g;
1.317 albertel 1232: $result=~s/(\Q$matchthis\E)/\<font color=\"red\"\>$1\<\/font\>/gs;
1.142 albertel 1233: }
1.66 www 1234: }
1.372 albertel 1235: if ($env{'form.link'}) {
1236: foreach (split(/\,/,$env{'form.link'})) {
1.66 www 1237: my ($anchorname,$linkurl)=split(/\>/,$_);
1238: my $matchthis=$anchorname;
1239: $matchthis=~s/\_+/\\s\+/g;
1.317 albertel 1240: $result=~s/(\Q$matchthis\E)/\<a href=\"$linkurl\"\>$1\<\/a\>/gs;
1.142 albertel 1241: }
1.66 www 1242: }
1.372 albertel 1243: if ($env{'form.anchor'}) {
1244: my $anchorname=$env{'form.anchor'};
1.66 www 1245: my $matchthis=$anchorname;
1246: $matchthis=~s/\_+/\\s\+/g;
1.317 albertel 1247: $result=~s/(\Q$matchthis\E)/\<a name=\"$anchorname\"\>$1\<\/a\>/s;
1.66 www 1248: $result.=(<<"ENDSCRIPT");
1.226 albertel 1249: <script type="text/javascript">
1.66 www 1250: document.location.hash='$anchorname';
1251: </script>
1252: ENDSCRIPT
1253: }
1254: return $result;
1255: }
1256:
1.79 www 1257: sub storefile {
1258: my ($file,$contents)=@_;
1.290 albertel 1259: &Apache::lonnet::correct_line_ends(\$contents);
1.79 www 1260: if (my $fh=Apache::File->new('>'.$file)) {
1261: print $fh $contents;
1262: $fh->close();
1.271 www 1263: return 1;
1.147 albertel 1264: } else {
1.271 www 1265: &warning("Unable to save file $file");
1266: return 0;
1.79 www 1267: }
1268: }
1269:
1.151 albertel 1270: sub createnewhtml {
1.321 www 1271: my $title=&mt('Title of document goes here');
1272: my $body=&mt('Body of document goes here');
1273: my $filecontents=(<<SIMPLECONTENT);
1.78 www 1274: <html>
1275: <head>
1.321 www 1276: <title>$title</title>
1.78 www 1277: </head>
1278: <body bgcolor="#FFFFFF">
1.321 www 1279: $body
1.78 www 1280: </body>
1281: </html>
1282: SIMPLECONTENT
1.321 www 1283: return $filecontents;
1.151 albertel 1284: }
1285:
1.274 albertel 1286: sub createnewsty {
1287: my $filecontents=(<<SIMPLECONTENT);
1288: <definetag name="">
1289: <render>
1290: <web></web>
1291: <tex></tex>
1292: </render>
1293: </definetag>
1294: SIMPLECONTENT
1295: return $filecontents;
1296: }
1297:
1.147 albertel 1298:
1.151 albertel 1299: sub inserteditinfo {
1.274 albertel 1300: my ($result,$filecontents,$filetype)=@_;
1.314 albertel 1301: $filecontents = &HTML::Entities::encode($filecontents,'<>&"');
1.147 albertel 1302: # my $editheader='<a href="#editsection">Edit below</a><hr />';
1.274 albertel 1303: my $xml_help = '';
1.321 www 1304: my $initialize='';
1.274 albertel 1305: if ($filetype eq 'html') {
1.323 www 1306: my $addbuttons=&Apache::lonhtmlcommon::htmlareaaddbuttons();
1.410 albertel 1307: $initialize=&Apache::lonhtmlcommon::spellheader();
1.347 albertel 1308: if (!&Apache::lonhtmlcommon::htmlareablocked() &&
1309: &Apache::lonhtmlcommon::htmlareabrowser()) {
1310: $initialize.=(<<FULLPAGE);
1.321 www 1311: <script type="text/javascript">
1.323 www 1312: $addbuttons
1313:
1.321 www 1314: HTMLArea.loadPlugin("FullPage");
1315:
1316: function initDocument() {
1.323 www 1317: var editor=new HTMLArea("filecont",config);
1.321 www 1318: editor.registerPlugin(FullPage);
1319: editor.generate();
1320: }
1321: </script>
1322: FULLPAGE
1.347 albertel 1323: } else {
1324: $initialize.=(<<FULLPAGE);
1325: <script type="text/javascript">
1326: $addbuttons
1327: function initDocument() {
1328: }
1329: </script>
1330: FULLPAGE
1331: }
1.321 www 1332: $result=~s/\<body([^\>]*)\>/\<body onload="initDocument()" $1\>/i;
1333: $xml_help=&Apache::loncommon::helpLatexCheatsheet();
1.274 albertel 1334: }
1335: my $cleanbut = '';
1.374 www 1336:
1.254 albertel 1337: my $titledisplay=&display_title();
1.426 banghart 1338: my %lt=&Apache::lonlocal::texthash('st' => 'Save and Edit',
1339: 'vi' => 'Save and View',
1.427 banghart 1340: 'dv' => 'Discard Edits and View',
1.428 banghart 1341: 'un' => 'undo',
1.280 www 1342: 'ed' => 'Edit');
1.161 albertel 1343: my $buttons=(<<BUTTONS);
1.274 albertel 1344: $cleanbut
1.428 banghart 1345: <input type="submit" name="discardview" accesskey="d" value="$lt{'dv'}" />
1346: <input type="submit" name="Undo" accesskey="u" value="$lt{'un'}" /><hr>
1.304 matthew 1347: <input type="submit" name="savethisfile" accesskey="s" value="$lt{'st'}" />
1348: <input type="submit" name="viewmode" accesskey="v" value="$lt{'vi'}" />
1.161 albertel 1349: BUTTONS
1.333 www 1350: $buttons.=&Apache::lonhtmlcommon::spelllink('xmledit','filecont');
1.78 www 1351: my $editfooter=(<<ENDFOOTER);
1.321 www 1352: $initialize
1.78 www 1353: <hr />
1354: <a name="editsection" />
1.333 www 1355: <form method="post" name="xmledit">
1.240 albertel 1356: $xml_help
1.280 www 1357: <input type="hidden" name="editmode" value="$lt{'ed'}" />
1.170 www 1358: $buttons<br />
1.366 albertel 1359: <textarea style="width:100%" cols="80" rows="44" name="filecont" id="filecont">$filecontents</textarea>
1.170 www 1360: <br />$buttons
1.78 www 1361: <br />
1362: </form>
1.254 albertel 1363: $titledisplay
1.321 www 1364: </body>
1.78 www 1365: ENDFOOTER
1.147 albertel 1366: # $result=~s/(\<body[^\>]*\>)/$1$editheader/is;
1.78 www 1367: $result=~s/(\<\/body\>)/$editfooter/is;
1368: return $result;
1369: }
1370:
1.152 albertel 1371: sub get_target {
1.372 albertel 1372: my $viewgrades=&Apache::lonnet::allowed('vgr',$env{'request.course.id'});
1373: if ( $env{'request.state'} eq 'published') {
1374: if ( defined($env{'form.grade_target'})
1.152 albertel 1375: && ($viewgrades == 'F' )) {
1.372 albertel 1376: return ($env{'form.grade_target'});
1377: } elsif (defined($env{'form.grade_target'})) {
1378: if (($env{'form.grade_target'} eq 'web') ||
1379: ($env{'form.grade_target'} eq 'tex') ) {
1380: return $env{'form.grade_target'}
1.153 albertel 1381: } else {
1382: return 'web';
1383: }
1.152 albertel 1384: } else {
1385: return 'web';
1386: }
1.372 albertel 1387: } elsif ($env{'request.state'} eq 'construct') {
1388: if ( defined($env{'form.grade_target'})) {
1389: return ($env{'form.grade_target'});
1.152 albertel 1390: } else {
1391: return 'web';
1392: }
1393: } else {
1394: return 'web';
1395: }
1396: }
1397:
1.24 sakharuk 1398: sub handler {
1.255 sakharuk 1399: my $request=shift;
1400:
1401: my $target=&get_target();
1402:
1.372 albertel 1403: $Apache::lonxml::debug=$env{'user.debug'};
1.255 sakharuk 1404:
1.364 albertel 1405: &Apache::loncommon::content_type($request,'text/html');
1.255 sakharuk 1406: &Apache::loncommon::no_cache($request);
1.372 albertel 1407: if ($env{'request.state'} eq 'published') {
1.363 albertel 1408: $request->set_last_modified(&Apache::lonnet::metadata($request->uri,
1409: 'lastrevisiondate'));
1410: }
1.255 sakharuk 1411: $request->send_http_header;
1412:
1413: return OK if $request->header_only;
1.68 www 1414:
1415:
1.255 sakharuk 1416: my $file=&Apache::lonnet::filelocation("",$request->uri);
1.274 albertel 1417: my $filetype;
1418: if ($file =~ /\.sty$/) {
1419: $filetype='sty';
1420: } else {
1421: $filetype='html';
1422: }
1.78 www 1423: #
1424: # Edit action? Save file.
1425: #
1.428 banghart 1426: if (!($env{'request.state'} eq 'published')) {
1427: if ($env{'form.savethisfile'} || $env{'form.viewmode'} || $env{'form.Undo'}) {
1.429 albertel 1428: my $html_file=&Apache::lonnet::getfile($file);
1429: my $error = &Apache::lonhomework::handle_save_or_undo($request, \$html_file, \$env{'form.filecont'});
1.255 sakharuk 1430: }
1431: }
1432: my %mystyle;
1433: my $result = '';
1434: my $filecontents=&Apache::lonnet::getfile($file);
1435: if ($filecontents eq -1) {
1.402 albertel 1436: my $start_page=&Apache::loncommon::start_page('File Error');
1.412 albertel 1437: my $end_page=&Apache::loncommon::end_page();
1.284 www 1438: my $fnf=&mt('File not found');
1.255 sakharuk 1439: $result=(<<ENDNOTFOUND);
1.402 albertel 1440: $start_page
1.284 www 1441: <b>$fnf: $file</b>
1.402 albertel 1442: $end_page
1.78 www 1443: ENDNOTFOUND
1.343 albertel 1444: $filecontents='';
1.372 albertel 1445: if ($env{'request.state'} ne 'published') {
1.274 albertel 1446: if ($filetype eq 'sty') {
1447: $filecontents=&createnewsty();
1448: } else {
1449: $filecontents=&createnewhtml();
1450: }
1.372 albertel 1451: $env{'form.editmode'}='Edit'; #force edit mode
1.255 sakharuk 1452: }
1453: } else {
1.372 albertel 1454: unless ($env{'request.state'} eq 'published') {
1.343 albertel 1455: if ($filecontents=~/BEGIN LON-CAPA Internal/) {
1.381 www 1456: &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 1457: }
1.264 www 1458: #
1459: # we are in construction space, see if edit mode forced
1.385 albertel 1460: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
1461: ['editmode']);
1.255 sakharuk 1462: }
1.427 banghart 1463: &Apache::lonnet::logthis("edit mode is ".$env{'form.editmode'});
1464: if (!$env{'form.editmode'} || $env{'form.viewmode'} || $env{'form.discardview'}) {
1.255 sakharuk 1465: $result = &Apache::lonxml::xmlparse($request,$target,$filecontents,
1466: '',%mystyle);
1.368 albertel 1467: undef($Apache::lonhomework::parsing_a_task);
1.385 albertel 1468: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
1469: ['rawmode']);
1.395 albertel 1470: if ($env{'form.rawmode'}) { $result = $filecontents; }
1.255 sakharuk 1471: }
1.147 albertel 1472: }
1.255 sakharuk 1473:
1.78 www 1474: #
1475: # Edit action? Insert editing commands
1476: #
1.372 albertel 1477: unless ($env{'request.state'} eq 'published') {
1.427 banghart 1478: if ($env{'form.editmode'} && (!($env{'form.viewmode'})) && (!($env{'form.discardview'})))
1479: {
1.255 sakharuk 1480: my $displayfile=$request->uri;
1481: $displayfile=~s/^\/[^\/]*//;
1.402 albertel 1482: my %options = ();
1483: if ($env{'environment.remote'} ne 'off') {
1484: $options{'bgcolor'} = '#FFFFFF';
1.349 albertel 1485: }
1.402 albertel 1486: my $start_page = &Apache::loncommon::start_page(undef,undef,
1487: \%options);
1488: $result=$start_page.
1.309 albertel 1489: &Apache::lonxml::message_location().'<h3>'.
1490: $displayfile.
1.402 albertel 1491: '</h3>'.&Apache::loncommon::end_page();
1.274 albertel 1492: $result=&inserteditinfo($result,$filecontents,$filetype);
1.255 sakharuk 1493: }
1.147 albertel 1494: }
1.402 albertel 1495: if ($filetype eq 'html') { &writeallows($request->uri); }
1.274 albertel 1496:
1.255 sakharuk 1497:
1.309 albertel 1498: &Apache::lonxml::add_messages(\$result);
1.255 sakharuk 1499: $request->print($result);
1500:
1501: return OK;
1.253 albertel 1502: }
1503:
1504: sub display_title {
1505: my $result;
1.372 albertel 1506: if ($env{'request.state'} eq 'construct') {
1.253 albertel 1507: my $title=&Apache::lonnet::gettitle();
1508: if (!defined($title) || $title eq '') {
1.372 albertel 1509: $title = $env{'request.filename'};
1.253 albertel 1510: $title = substr($title, rindex($title, '/') + 1);
1511: }
1512: $result = "<script type='text/javascript'>top.document.title = '$title - LON-CAPA Construction Space';</script>";
1513: }
1514: return $result;
1.24 sakharuk 1515: }
1.147 albertel 1516:
1.22 albertel 1517: sub debug {
1.298 albertel 1518: if ($Apache::lonxml::debug eq "1") {
1519: $|=1;
1.300 albertel 1520: my $request=$Apache::lonxml::request;
1.388 albertel 1521: if (!$request) {
1522: eval { $request=Apache->request; };
1523: }
1524: if (!$request) {
1525: eval { $request=Apache2::RequestUtil->request; };
1526: }
1.314 albertel 1527: $request->print('<font size="-2"><pre>DEBUG:'.&HTML::Entities::encode($_[0],'<>&"')."</pre></font>\n");
1.346 albertel 1528: #&Apache::lonnet::logthis($_[0]);
1.298 albertel 1529: }
1.22 albertel 1530: }
1.49 albertel 1531:
1.348 albertel 1532: sub show_error_warn_msg {
1.372 albertel 1533: if ($env{'request.filename'} eq '/home/httpd/html/res/lib/templates/simpleproblem.problem' &&
1534: &Apache::lonnet::allowed('mdc',$env{'request.course.id'})) {
1.351 albertel 1535: return 1;
1536: }
1.348 albertel 1537: return (($Apache::lonxml::debug eq 1) ||
1.372 albertel 1538: ($env{'request.state'} eq 'construct') ||
1.348 albertel 1539: ($Apache::lonhomework::browse eq 'F'
1540: &&
1.372 albertel 1541: $env{'form.show_errors'} eq 'on'));
1.348 albertel 1542: }
1543:
1.22 albertel 1544: sub error {
1.336 albertel 1545: $errorcount++;
1.348 albertel 1546: if ( &show_error_warn_msg() ) {
1.336 albertel 1547: # If printing in construction space, put the error inside <pre></pre>
1548: push(@Apache::lonxml::error_messages,
1549: $Apache::lonxml::warnings_error_header.
1550: "<b>ERROR:</b>".join("<br />\n",@_)."<br />\n");
1551: $Apache::lonxml::warnings_error_header='';
1552: } else {
1553: my $errormsg;
1554: my ($symb)=&Apache::lonnet::symbread();
1555: if ( !$symb ) {
1556: #public or browsers
1557: $errormsg=&mt("An error occured while processing this resource. The author has been notified.");
1.403 albertel 1558: }
1.413 albertel 1559: my $host=$Apache::lonnet::perlvar{'lonHostID'};
1.416 albertel 1560: my $msg = join('<br />',(@_,"The error occurred on host <tt>$host</tt>"));
1.336 albertel 1561: #notify author
1.403 albertel 1562: &Apache::lonmsg::author_res_msg($env{'request.filename'},$msg);
1.336 albertel 1563: #notify course
1.372 albertel 1564: if ( $symb && $env{'request.course.id'} ) {
1.380 www 1565: my $cnum=$env{'course.'.$env{'request.course.id'}.'.num'};
1566: my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
1.336 albertel 1567: my (undef,%users)=&Apache::lonfeedback::decide_receiver(undef,0,1,1,1);
1.372 albertel 1568: my $declutter=&Apache::lonnet::declutter($env{'request.filename'});
1.336 albertel 1569: my @userlist;
1570: foreach (keys %users) {
1571: my ($user,$domain) = split(/:/, $_);
1572: push(@userlist,"$user\@$domain");
1.380 www 1573: my $key=$declutter.'_'.$user.'_'.$domain;
1574: my %lastnotified=&Apache::lonnet::get('nohist_xmlerrornotifications',
1575: [$key],
1576: $cdom,$cnum);
1577: my $now=time;
1578: if ($now-$lastnotified{$key}>86400) {
1579: &Apache::lonmsg::user_normal_msg($user,$domain,
1.403 albertel 1580: "Error [$declutter]",$msg);
1.380 www 1581: &Apache::lonnet::put('nohist_xmlerrornotifications',
1582: {$key => $now},
1583: $cdom,$cnum);
1584: }
1.336 albertel 1585: }
1.372 albertel 1586: if ($env{'request.role.adv'}) {
1.336 albertel 1587: $errormsg=&mt("An error occured while processing this resource. The course personnel ([_1]) and the author have been notified.",join(', ',@userlist));
1588: } else {
1589: $errormsg=&mt("An error occured while processing this resource. The instructor has been notified.");
1590: }
1591: }
1592: push(@Apache::lonxml::error_messages,"<b>$errormsg</b> <br />");
1.52 albertel 1593: }
1.22 albertel 1594: }
1.49 albertel 1595:
1.22 albertel 1596: sub warning {
1.295 albertel 1597: $warningcount++;
1.261 albertel 1598:
1.372 albertel 1599: if ($env{'form.grade_target'} ne 'tex') {
1.348 albertel 1600: if ( &show_error_warn_msg() ) {
1.309 albertel 1601: push(@Apache::lonxml::warning_messages,
1602: $Apache::lonxml::warnings_error_header.
1603: "<b>W</b>ARNING<b>:</b>".join('<br />',@_)."<br />\n");
1.295 albertel 1604: $Apache::lonxml::warnings_error_header='';
1605: }
1606: }
1.309 albertel 1607: }
1608:
1609: sub info {
1.372 albertel 1610: if ($env{'form.grade_target'} ne 'tex'
1611: && $env{'request.state'} eq 'construct') {
1.309 albertel 1612: push(@Apache::lonxml::info_messages,join('<br />',@_)."<br />\n");
1613: }
1614: }
1615:
1616: sub message_location {
1617: return '__LONCAPA_INTERNAL_MESSAGE_LOCATION__';
1618: }
1619:
1620: sub add_messages {
1621: my ($msg)=@_;
1622: my $result=join(' ',
1623: @Apache::lonxml::info_messages,
1624: @Apache::lonxml::error_messages,
1625: @Apache::lonxml::warning_messages);
1626: undef(@Apache::lonxml::info_messages);
1627: undef(@Apache::lonxml::error_messages);
1628: undef(@Apache::lonxml::warning_messages);
1629: $$msg=~s/__LONCAPA_INTERNAL_MESSAGE_LOCATION__/$result/;
1630: $$msg=~s/__LONCAPA_INTERNAL_MESSAGE_LOCATION__//g;
1.83 albertel 1631: }
1632:
1633: sub get_param {
1.213 albertel 1634: my ($param,$parstack,$safeeval,$context,$case_insensitive) = @_;
1635: if ( ! $context ) { $context = -1; }
1636: my $args ='';
1637: if ( $#$parstack > (-2-$context) ) { $args=$$parstack[$context]; }
1.297 sakharuk 1638: if ( ! $Apache::lonxml::usestyle ) {
1639: $args=$Apache::lonxml::style_values.$args;
1640: }
1.213 albertel 1641: if ( ! $args ) { return undef; }
1642: if ( $case_insensitive ) {
1.417 albertel 1643: if ($args =~ s/(my (?:.*))(\$\Q$param\E[,\)])/$1.lc($2)/ei) {
1.213 albertel 1644: return &Apache::run::run("{$args;".'return $'.$param.'}',
1645: $safeeval); #'
1646: } else {
1647: return undef;
1648: }
1649: } else {
1.417 albertel 1650: if ( $args =~ /my .*\$\Q$param\E[,\)]/ ) {
1.213 albertel 1651: return &Apache::run::run("{$args;".'return $'.$param.'}',
1652: $safeeval); #'
1653: } else {
1654: return undef;
1655: }
1656: }
1.22 albertel 1657: }
1658:
1.132 albertel 1659: sub get_param_var {
1.213 albertel 1660: my ($param,$parstack,$safeeval,$context,$case_insensitive) = @_;
1.132 albertel 1661: if ( ! $context ) { $context = -1; }
1662: my $args ='';
1663: if ( $#$parstack > (-2-$context) ) { $args=$$parstack[$context]; }
1.297 sakharuk 1664: if ( ! $Apache::lonxml::usestyle ) {
1665: $args=$Apache::lonxml::style_values.$args;
1666: }
1.230 albertel 1667: &Apache::lonxml::debug("Args are $args param is $param");
1.213 albertel 1668: if ($case_insensitive) {
1.419 albertel 1669: if (! ($args=~s/(my (?:.*))(\$\Q$param\E[,\)])/$1.lc($2)/ei)) {
1.213 albertel 1670: return undef;
1671: }
1.419 albertel 1672: } elsif ( $args !~ /my .*\$\Q$param\E[,\)]/ ) { return undef; }
1.132 albertel 1673: my $value=&Apache::run::run("{$args;".'return $'.$param.'}',$safeeval); #'
1.230 albertel 1674: &Apache::lonxml::debug("first run is $value");
1.341 albertel 1675: if ($value =~ /^[\$\@\%][a-zA-Z_]\w*$/) {
1.230 albertel 1676: &Apache::lonxml::debug("doing second");
1677: my @result=&Apache::run::run("return $value",$safeeval,1);
1678: if (!defined($result[0])) {
1679: return $value
1680: } else {
1681: if (wantarray) { return @result; } else { return $result[0]; }
1682: }
1.132 albertel 1683: } else {
1684: return $value;
1685: }
1686: }
1687:
1.74 albertel 1688: sub register_insert {
1.75 albertel 1689: my @data = split /\n/, &Apache::lonnet::getfile('/home/httpd/lonTabs/insertlist.tab');
1.74 albertel 1690: my $i;
1.76 albertel 1691: my $tagnum=0;
1.74 albertel 1692: my @order;
1693: for ($i=0;$i < $#data; $i++) {
1694: my $line = $data[$i];
1695: if ( $line =~ /^\#/ || $line =~ /^\s*\n/) { next; }
1696: if ( $line =~ /TABLE/ ) { last; }
1.268 bowersj2 1697: my ($tag,$descrip,$color,$function,$show,$helpfile,$helpdesc) = split(/,/, $line);
1.135 albertel 1698: if ($tag) {
1699: $insertlist{"$tagnum.tag"} = $tag;
1700: $insertlist{"$tagnum.description"} = $descrip;
1701: $insertlist{"$tagnum.color"} = $color;
1702: $insertlist{"$tagnum.function"} = $function;
1703: if (!defined($show)) { $show='yes'; }
1704: $insertlist{"$tagnum.show"}= $show;
1.268 bowersj2 1705: $insertlist{"$tagnum.helpfile"} = $helpfile;
1706: $insertlist{"$tagnum.helpdesc"} = $helpdesc;
1.135 albertel 1707: $insertlist{"$tag.num"}=$tagnum;
1708: $tagnum++;
1709: }
1.74 albertel 1710: }
1.76 albertel 1711: $i++; #skipping TABLE line
1712: $tagnum = 0;
1.74 albertel 1713: for (;$i < $#data;$i++) {
1714: my $line = $data[$i];
1.76 albertel 1715: my ($mnemonic,@which) = split(/ +/,$line);
1716: my $tag = $insertlist{"$tagnum.tag"};
1.144 matthew 1717: for (my $j=0;$j <=$#which;$j++) {
1.74 albertel 1718: if ( $which[$j] eq 'Y' ) {
1.76 albertel 1719: if ($insertlist{"$j.show"} ne 'no') {
1720: push(@{ $insertlist{"$tag.which"} },$j);
1721: }
1.74 albertel 1722: }
1723: }
1.76 albertel 1724: $tagnum++;
1.74 albertel 1725: }
1726: }
1.98 albertel 1727:
1728: sub description {
1729: my ($token)=@_;
1.138 albertel 1730: my $tagnum;
1731: my $tag=$token->[1];
1732: foreach my $namespace (reverse @Apache::lonxml::namespace) {
1733: my $testtag=$namespace.'::'.$tag;
1734: $tagnum=$insertlist{"$testtag.num"};
1735: if (defined($tagnum)) { last; }
1736: }
1737: if (!defined ($tagnum)) { $tagnum=$Apache::lonxml::insertlist{"$tag.num"}; }
1738: return $insertlist{$tagnum.'.description'};
1.268 bowersj2 1739: }
1740:
1741: # Returns a list containing the help file, and the description
1742: sub helpinfo {
1743: my ($token)=@_;
1744: my $tagnum;
1745: my $tag=$token->[1];
1746: foreach my $namespace (reverse @Apache::lonxml::namespace) {
1747: my $testtag=$namespace.'::'.$tag;
1748: $tagnum=$insertlist{"$testtag.num"};
1749: if (defined($tagnum)) { last; }
1750: }
1751: if (!defined ($tagnum)) { $tagnum=$Apache::lonxml::insertlist{"$tag.num"}; }
1752: return ($insertlist{$tagnum.'.helpfile'}, $insertlist{$tagnum.'.helpdesc'});
1.98 albertel 1753: }
1.123 albertel 1754:
1.1 sakharuk 1755: 1;
1756: __END__
1.68 www 1757:
1758:
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