Annotation of loncom/xml/lonxml.pm, revision 1.397
1.2 sakharuk 1: # The LearningOnline Network with CAPA
1.3 sakharuk 2: # XML Parser Module
1.2 sakharuk 3: #
1.397 ! albertel 4: # $Id: lonxml.pm,v 1.396 2006/02/04 22:11:42 foxr Exp $
1.139 www 5: #
6: # Copyright Michigan State University Board of Trustees
7: #
8: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
9: #
10: # LON-CAPA is free software; you can redistribute it and/or modify
11: # it under the terms of the GNU General Public License as published by
12: # the Free Software Foundation; either version 2 of the License, or
13: # (at your option) any later version.
14: #
15: # LON-CAPA is distributed in the hope that it will be useful,
16: # but WITHOUT ANY WARRANTY; without even the implied warranty of
17: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18: # GNU General Public License for more details.
19: #
20: # You should have received a copy of the GNU General Public License
21: # along with LON-CAPA; if not, write to the Free Software
22: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23: #
24: # /home/httpd/html/adm/gpl.txt
25: #
26: # http://www.lon-capa.org/
27: #
28: # Copyright for TtHfunc and TtMfunc by Ian Hutchinson.
29: # TtHfunc and TtMfunc (the "Code") may be compiled and linked into
30: # binary executable programs or libraries distributed by the
31: # Michigan State University (the "Licensee"), but any binaries so
32: # distributed are hereby licensed only for use in the context
33: # of a program or computational system for which the Licensee is the
34: # primary author or distributor, and which performs substantial
35: # additional tasks beyond the translation of (La)TeX into HTML.
36: # The C source of the Code may not be distributed by the Licensee
37: # to any other parties under any circumstances.
38: #
1.316 albertel 39:
1.2 sakharuk 40:
1.4 albertel 41: package Apache::lonxml;
1.33 www 42: use vars
1.320 www 43: qw(@pwd @outputstack $redirection $import @extlinks $metamode $evaluate %insertlist @namespace $errorcount $warningcount @htmlareafields);
1.1 sakharuk 44: use strict;
1.167 albertel 45: use HTML::LCParser();
1.161 albertel 46: use HTML::TreeBuilder();
47: use HTML::Entities();
48: use Safe();
49: use Safe::Hole();
50: use Math::Cephes();
51: use Math::Random();
52: use Opcode();
1.271 www 53: use POSIX qw(strftime);
1.339 albertel 54: use Time::HiRes qw( gettimeofday tv_interval );
1.393 albertel 55: use Symbol();
1.266 bowersj2 56:
1.72 albertel 57: sub register {
1.141 albertel 58: my ($space,@taglist) = @_;
59: foreach my $temptag (@taglist) {
60: push(@{ $Apache::lonxml::alltags{$temptag} },$space);
1.72 albertel 61: }
62: }
63:
1.141 albertel 64: sub deregister {
65: my ($space,@taglist) = @_;
66: foreach my $temptag (@taglist) {
67: my $tempspace = $Apache::lonxml::alltags{$temptag}[-1];
68: if ($tempspace eq $space) {
69: pop(@{ $Apache::lonxml::alltags{$temptag} });
70: }
71: }
1.142 albertel 72: #&printalltags();
1.141 albertel 73: }
74:
1.46 www 75: use Apache::Constants qw(:common);
1.161 albertel 76: use Apache::lontexconvert();
77: use Apache::style();
78: use Apache::run();
79: use Apache::londefdef();
80: use Apache::scripttag();
1.285 www 81: use Apache::languagetags();
1.161 albertel 82: use Apache::edit();
1.266 bowersj2 83: use Apache::inputtags();
84: use Apache::outputtags();
1.372 albertel 85: use Apache::lonnet;
1.161 albertel 86: use Apache::File();
87: use Apache::loncommon();
1.198 www 88: use Apache::lonfeedback();
1.200 www 89: use Apache::lonmsg();
1.217 matthew 90: use Apache::loncacc();
1.280 www 91: use Apache::lonlocal;
1.79 www 92:
1.72 albertel 93: #================================================== Main subroutine: xmlparse
94: #debugging control, to turn on debugging modify the correct handler
95: $Apache::lonxml::debug=0;
1.206 albertel 96:
97: # keeps count of the number of warnings and errors generated in a parse
98: $warningcount=0;
99: $errorcount=0;
1.72 albertel 100:
101: #path to the directory containing the file currently being processed
102: @pwd=();
103:
104: #these two are used for capturing a subset of the output for later processing,
105: #don't touch them directly use &startredirection and &endredirection
106: @outputstack = ();
107: $redirection = 0;
108:
109: #controls wheter the <import> tag actually does
110: $import = 1;
111: @extlinks=();
112:
113: # meta mode is a bit weird only some output is to be turned off
114: #<output> tag turns metamode off (defined in londefdef.pm)
115: $metamode = 0;
116:
117: # turns on and of run::evaluate actually derefencing var refs
118: $evaluate = 1;
1.7 albertel 119:
1.74 albertel 120: # data structure for eidt mode, determines what tags can go into what other tags
121: %insertlist=();
1.68 www 122:
1.99 albertel 123: # stores the list of active tag namespaces
1.76 albertel 124: @namespace=();
125:
1.99 albertel 126: # has the dynamic menu been updated to know about this resource
127: $Apache::lonxml::registered=0;
128:
1.172 albertel 129: # a pointer the the Apache request object
130: $Apache::lonxml::request='';
131:
1.216 sakharuk 132: # a problem number counter, and check on ether it is used
1.237 sakharuk 133: $Apache::lonxml::counter=1;
1.204 albertel 134: $Apache::lonxml::counter_changed=0;
135:
1.212 albertel 136: #internal check on whether to look at style defs
137: $Apache::lonxml::usestyle=1;
1.260 albertel 138:
139: #locations used to store the parameter string for style substitutions
140: $Apache::lonxml::style_values='';
141: $Apache::lonxml::style_end_values='';
1.212 albertel 142:
1.281 albertel 143: #array of ssi calls that need to occur after we are done parsing
144: @Apache::lonxml::ssi_info=();
145:
1.282 albertel 146: #should we do the postag variable interpolation
147: $Apache::lonxml::post_evaluate=1;
148:
1.295 albertel 149: #a header message to emit in the case of any generated warning or errors
150: $Apache::lonxml::warnings_error_header='';
151:
1.396 foxr 152: # Control whether or not LaTeX symbols should be substituted for their
153: # \ style equivalents...this may be turned off e.g. in an verbatim
154: # environment.
155:
156: $Apache::lonxml::substitute_LaTeX_symbols = 1; # Starts out on.
157:
158: sub enable_LaTeX_substitutions {
159: $Apache::lonxml::substitute_LaTeX_symbols = 1;
160: }
161: sub disable_LaTeX_substitutions {
162: $Apache::lonxml::substitute_LaTeX_symbols = 0;
163: }
164:
1.68 www 165: sub xmlbegin {
1.356 albertel 166: my ($style)=@_;
167: my $output='';
168: @htmlareafields=();
1.372 albertel 169: if ($env{'browser.mathml'}) {
1.356 albertel 170: $output='<?xml version="1.0"?>'
1.357 albertel 171: #.'<?xml-stylesheet type="text/css" href="/adm/MathML/mathml.css"?>'."\n"
172: # .'<!DOCTYPE html SYSTEM "/adm/MathML/mathml.dtd" '
173:
174: # .'<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd" [<!ENTITY mathns "http://www.w3.org/1998/Math/MathML">] >'
175: .'<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1 plus MathML 2.0 plus SVG 1.1//EN" "http://www.w3.org/2002/04/xhtml-math-svg/xhtml-math-svg.dtd">'
1.68 www 176: .'<html xmlns:math="http://www.w3.org/1998/Math/MathML" '
1.357 albertel 177: .'xmlns="http://www.w3.org/1999/xhtml">';
1.356 albertel 178: } else {
179: $output='<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html>';
180: }
181: if ($style eq 'encode') {
182: $output=&HTML::Entities::encode($output,'<>&"');
183: }
184: return $output;
1.68 www 185: }
186:
187: sub xmlend {
1.335 sakharuk 188: my ($target,$parser)=@_;
1.278 www 189: my $mode='xml';
190: my $status='OPEN';
1.368 albertel 191: if ($Apache::lonhomework::parsing_a_problem ||
192: $Apache::lonhomework::parsing_a_task ) {
1.278 www 193: $mode='problem';
194: $status=$Apache::inputtags::status[-1];
195: }
1.362 matthew 196: my $discussion;
1.379 albertel 197: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
198: ['LONCAPA_INTERNAL_no_discussion']);
1.372 albertel 199: if (! exists($env{'form.LONCAPA_INTERNAL_no_discussion'}) ||
200: $env{'form.LONCAPA_INTERNAL_no_discussion'} ne 'true') {
1.362 matthew 201: $discussion=&Apache::lonfeedback::list_discussion($mode,$status);
202: }
1.334 sakharuk 203: if ($target eq 'tex') {
1.335 sakharuk 204: $discussion.='<tex>\keephidden{ENDOFPROBLEM}\vskip 0.5mm\noindent\makebox[\textwidth/$number_of_columns][b]{\hrulefill}\end{document}</tex>';
1.334 sakharuk 205: &Apache::lonxml::newparser($parser,\$discussion,'');
206: return '';
207: } else {
1.360 albertel 208: return $discussion.&Apache::loncommon::endbodytag();
1.334 sakharuk 209: }
1.119 www 210: }
211:
212: sub tokeninputfield {
1.120 www 213: my $defhost=$Apache::lonnet::perlvar{'lonHostID'};
214: $defhost=~tr/a-z/A-Z/;
1.119 www 215: return (<<ENDINPUTFIELD)
1.226 albertel 216: <script type="text/javascript">
1.120 www 217: function updatetoken() {
218: var comp=new Array;
219: var barcode=unescape(document.tokeninput.barcode.value);
220: comp=barcode.split('*');
221: if (typeof(comp[0])!="undefined") {
222: document.tokeninput.codeone.value=comp[0];
223: }
224: if (typeof(comp[1])!="undefined") {
225: document.tokeninput.codetwo.value=comp[1];
226: }
227: if (typeof(comp[2])!="undefined") {
228: comp[2]=comp[2].toUpperCase();
229: document.tokeninput.codethree.value=comp[2];
230: }
231: document.tokeninput.barcode.value='';
232: }
233: </script>
234: <form method="post" name="tokeninput">
1.119 www 235: <table border="2" bgcolor="#FFFFBB">
236: <tr><th>DocID Checkin</th></tr>
237: <tr><td>
238: <table>
239: <tr>
240: <td>Scan in Barcode</td>
1.120 www 241: <td><input type="text" size="22" name="barcode"
242: onChange="updatetoken()"/></td>
1.119 www 243: </tr>
244: <tr><td><i>or</i> Type in DocID</td>
245: <td>
246: <input type="text" size="5" name="codeone" />
1.120 www 247: <b><font size="+2">*</font></b>
1.119 www 248: <input type="text" size="5" name="codetwo" />
1.120 www 249: <b><font size="+2">*</font></b>
250: <input type="text" size="10" name="codethree" value="$defhost"
251: onChange="this.value=this.value.toUpperCase()" />
1.119 www 252: </td></tr>
253: </table>
254: </td></tr>
255: <tr><td><input type="submit" value="Check in DocID" /></td></tr>
256: </table>
257: </form>
258: ENDINPUTFIELD
1.112 www 259: }
260:
1.116 www 261: sub maketoken {
1.118 www 262: my ($symb,$tuname,$tudom,$tcrsid)=@_;
1.112 www 263: unless ($symb) {
264: $symb=&Apache::lonnet::symbread();
265: }
266: unless ($tuname) {
1.372 albertel 267: $tuname=$env{'user.name'};
268: $tudom=$env{'user.domain'};
269: $tcrsid=$env{'request.course.id'};
1.112 www 270: }
1.116 www 271:
1.118 www 272: return &Apache::lonnet::checkout($symb,$tuname,$tudom,$tcrsid);
273: }
274:
275: sub printtokenheader {
1.133 albertel 276: my ($target,$token,$tsymb,$tcrsid,$tudom,$tuname)=@_;
1.116 www 277: unless ($token) { return ''; }
1.118 www 278:
1.133 albertel 279: my ($symb,$courseid,$domain,$name) = &Apache::lonxml::whichuser();
280: unless ($tsymb) {
281: $tsymb=$symb;
1.118 www 282: }
283: unless ($tuname) {
1.133 albertel 284: $tuname=$name;
285: $tudom=$domain;
286: $tcrsid=$courseid;
1.118 www 287: }
1.114 www 288:
1.390 albertel 289: my $plainname=&Apache::loncommon::plainname($tuname,$tudom);
1.114 www 290:
1.112 www 291: if ($target eq 'web') {
1.145 www 292: my %idhash=&Apache::lonnet::idrget($tudom,($tuname));
1.115 www 293: return
1.221 albertel 294: '<img align="right" src="/cgi-bin/barcode.png?encode='.$token.'" />'.
1.284 www 295: &mt('Checked out for').' '.$plainname.
296: '<br />'.&mt('User').': '.$tuname.' at '.$tudom.
297: '<br />'.&mt('ID').': '.$idhash{$tuname}.
298: '<br />'.&mt('CourseID').': '.$tcrsid.
1.372 albertel 299: '<br />'.&mt('Course').': '.$env{'course.'.$tcrsid.'.description'}.
1.284 www 300: '<br />'.&mt('DocID').': '.$token.
301: '<br />'.&mt('Time').': '.&Apache::lonlocal::locallocaltime().'<hr />';
1.112 www 302: } else {
1.121 albertel 303: return $token;
1.112 www 304: }
1.68 www 305: }
306:
1.356 albertel 307: sub fontsettings {
1.70 www 308: my $headerstring='';
1.372 albertel 309: if (($env{'browser.os'} eq 'mac') && (!$env{'browser.mathml'})) {
1.248 albertel 310: $headerstring.=
1.343 albertel 311: '<meta Content-Type="text/html; charset=x-mac-roman" />';
1.372 albertel 312: } elsif (!$env{'browser.mathml'} && $env{'browser.unicode'}) {
1.248 albertel 313: $headerstring.=
314: '<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />';
1.70 www 315: }
316: return $headerstring;
1.68 www 317: }
318:
1.48 albertel 319: sub printalltags {
320: my $temp;
321: foreach $temp (sort keys %Apache::lonxml::alltags) {
1.141 albertel 322: &Apache::lonxml::debug("$temp -- ".
323: join(',',@{ $Apache::lonxml::alltags{$temp} }));
1.48 albertel 324: }
325: }
1.31 sakharuk 326:
1.3 sakharuk 327: sub xmlparse {
1.172 albertel 328: my ($request,$target,$content_file_string,$safeinit,%style_for_target) = @_;
1.96 albertel 329:
1.172 albertel 330: &setup_globals($request,$target);
1.232 albertel 331: &Apache::inputtags::initialize_inputtags();
1.370 albertel 332: &Apache::bridgetask::initialize_bridgetask();
1.232 albertel 333: &Apache::outputtags::initialize_outputtags();
334: &Apache::edit::initialize_edit();
1.287 albertel 335: &Apache::londefdef::initialize_londefdef();
1.244 albertel 336:
1.178 www 337: #
338: # do we have a course style file?
339: #
340:
1.372 albertel 341: if ($env{'request.course.id'} && $env{'request.state'} ne 'construct') {
1.178 www 342: my $bodytext=
1.372 albertel 343: $env{'course.'.$env{'request.course.id'}.'.default_xml_style'};
1.178 www 344: if ($bodytext) {
1.337 albertel 345: foreach my $file (split(',',$bodytext)) {
346: my $location=&Apache::lonnet::filelocation('',$file);
347: my $styletext=&Apache::lonnet::getfile($location);
348: if ($styletext ne '-1') {
349: %style_for_target = (%style_for_target,
350: &Apache::style::styleparser($target,$styletext));
351: }
352: }
353: }
1.372 albertel 354: } elsif ($env{'construct.style'} && ($env{'request.state'} eq 'construct')) {
355: my $location=&Apache::lonnet::filelocation('',$env{'construct.style'});
1.291 sakharuk 356: my $styletext=&Apache::lonnet::getfile($location);
357: if ($styletext ne '-1') {
358: %style_for_target = (%style_for_target,
359: &Apache::style::styleparser($target,$styletext));
360: }
1.178 www 361: }
1.255 sakharuk 362: #&printalltags();
1.16 albertel 363: my @pars = ();
1.372 albertel 364: my $pwd=$env{'request.filename'};
1.23 albertel 365: $pwd =~ s:/[^/]*$::;
366: &newparser(\@pars,\$content_file_string,$pwd);
1.24 sakharuk 367:
1.3 sakharuk 368: my $safeeval = new Safe;
1.40 albertel 369: my $safehole = new Safe::Hole;
1.82 ng 370: &init_safespace($target,$safeeval,$safehole,$safeinit);
1.3 sakharuk 371: #-------------------- Redefinition of the target in the case of compound target
372:
373: ($target, my @tenta) = split('&&',$target);
374:
1.150 albertel 375: my @stack = ();
1.3 sakharuk 376: my @parstack = ();
1.358 albertel 377: &initdepth();
378: &init_alarm();
1.101 albertel 379: my $finaloutput = &inner_xmlparse($target,\@stack,\@parstack,\@pars,
1.394 albertel 380: $safeeval,\%style_for_target,1);
1.255 sakharuk 381:
1.372 albertel 382: if ($env{'request.uri'}) {
383: &writeallows($env{'request.uri'});
1.125 www 384: }
1.281 albertel 385: &do_registered_ssi();
1.204 albertel 386: if ($Apache::lonxml::counter_changed) { &store_counter() }
1.393 albertel 387:
388: &clean_safespace($safeeval);
389:
1.372 albertel 390: if ($env{'form.return_only_error_and_warning_counts'}) {
1.361 www 391: return "$errorcount:$warningcount";
392: }
1.3 sakharuk 393: return $finaloutput;
1.106 www 394: }
395:
1.191 albertel 396: sub latex_special_symbols {
1.272 albertel 397: my ($string,$where)=@_;
1.396 foxr 398: #
399: # If e.g. in verbatim mode, then don't substitute.
400: # but return original string.
401: #
402: if (!($Apache::lonxml::substitute_LaTeX_symbols)) {
403: return $string;
404: }
1.235 sakharuk 405: if ($where eq 'header') {
1.272 albertel 406: $string =~ s/(\\|_|\^)/ /g;
1.311 albertel 407: $string =~ s/(\$|%|\{|\})/\\$1/g;
1.273 sakharuk 408: $string =~ s/_/ /g;
1.311 albertel 409: $string=&Apache::lonprintout::character_chart($string);
410: # any & or # leftover should be safe to just escape
411: $string=~s/([^\\])\&/$1\\\&/g;
412: $string=~s/([^\\])\#/$1\\\#/g;
1.229 sakharuk 413: } else {
1.312 albertel 414: $string=~s/\\/\\ensuremath{\\backslash}/g;
1.367 albertel 415: $string=~s/\\\%|\%/\\\%/g;
416: $string=~s/\\{|{/\\{/g;
417: $string=~s/\\}|}/\\}/g;
1.378 albertel 418: $string=~s/\\ensuremath\\{\\backslash\\}/\\ensuremath{\\backslash}/g;
1.367 albertel 419: $string=~s/\\\$|\$/\\\$/g;
420: $string=~s/\\\_|\_/\\\_/g;
1.313 albertel 421: $string=~s/([^\\]|^)(\~|\^)/$1\\$2\\strut /g;
1.310 sakharuk 422: $string=~s/(>|<)/\\ensuremath\{$1\}/g; #more or less
1.311 albertel 423: $string=&Apache::lonprintout::character_chart($string);
424: # any & or # leftover should be safe to just escape
1.367 albertel 425: $string=~s/\\\&|\&/\\\&/g;
426: $string=~s/\\\#|\#/\\\#/g;
1.332 sakharuk 427: $string=~s/\|/\$\\mid\$/g;
1.310 sakharuk 428: #single { or } How to escape?
1.229 sakharuk 429: }
1.272 albertel 430: return $string;
1.188 sakharuk 431: }
432:
1.101 albertel 433: sub inner_xmlparse {
1.394 albertel 434: my ($target,$stack,$parstack,$pars,$safeeval,$style_for_target,$start)=@_;
1.101 albertel 435: my $finaloutput = '';
436: my $result;
437: my $token;
1.258 albertel 438: my $dontpop=0;
1.389 albertel 439: my $startredirection = $Apache::lonxml::redirection;
1.101 albertel 440: while ( $#$pars > -1 ) {
441: while ($token = $$pars['-1']->get_token) {
1.261 albertel 442: if (($token->[0] eq 'T') || ($token->[0] eq 'C') ) {
1.101 albertel 443: if ($metamode<1) {
1.190 albertel 444: my $text=$token->[1];
1.193 albertel 445: if ($token->[0] eq 'C' && $target eq 'tex') {
1.239 sakharuk 446: $text = '';
447: # $text = '%'.$text."\n";
1.182 sakharuk 448: }
1.190 albertel 449: $result.=$text;
1.101 albertel 450: }
1.261 albertel 451: } elsif (($token->[0] eq 'D')) {
452: if ($metamode<1 && $target eq 'web') {
453: my $text=$token->[1];
454: $result.=$text;
455: }
1.101 albertel 456: } elsif ($token->[0] eq 'PI') {
1.261 albertel 457: if ($metamode<1 && $target eq 'web') {
1.101 albertel 458: $result=$token->[2];
459: }
460: } elsif ($token->[0] eq 'S') {
1.140 albertel 461: # add tag to stack
1.101 albertel 462: push (@$stack,$token->[1]);
463: # add parameters list to another stack
464: push (@$parstack,&parstring($token));
1.140 albertel 465: &increasedepth($token);
1.212 albertel 466: if ($Apache::lonxml::usestyle &&
467: exists($$style_for_target{$token->[1]})) {
468: $Apache::lonxml::usestyle=0;
469: my $string=$$style_for_target{$token->[1]}.
470: '<LONCAPA_INTERNAL_TURN_STYLE_ON />';
471: &Apache::lonxml::newparser($pars,\$string);
1.257 albertel 472: $Apache::lonxml::style_values=$$parstack[-1];
1.259 albertel 473: $Apache::lonxml::style_end_values=$$parstack[-1];
1.101 albertel 474: } else {
475: $result = &callsub("start_$token->[1]", $target, $token, $stack,
476: $parstack, $pars, $safeeval, $style_for_target);
1.140 albertel 477: }
1.101 albertel 478: } elsif ($token->[0] eq 'E') {
1.212 albertel 479: if ($Apache::lonxml::usestyle &&
480: exists($$style_for_target{'/'."$token->[1]"})) {
481: $Apache::lonxml::usestyle=0;
482: my $string=$$style_for_target{'/'.$token->[1]}.
1.258 albertel 483: '<LONCAPA_INTERNAL_TURN_STYLE_ON end="'.$token->[1].'" />';
1.212 albertel 484: &Apache::lonxml::newparser($pars,\$string);
1.259 albertel 485: $Apache::lonxml::style_values=$Apache::lonxml::style_end_values;
486: $Apache::lonxml::style_end_values='';
1.258 albertel 487: $dontpop=1;
1.101 albertel 488: } else {
1.258 albertel 489: #clear out any tags that didn't end
490: while ($token->[1] ne $$stack['-1'] && ($#$stack > -1)) {
491: my $lasttag=$$stack[-1];
1.317 albertel 492: if ($token->[1] =~ /^\Q$lasttag\E$/i) {
1.258 albertel 493: &Apache::lonxml::warning('Using tag </'.$token->[1].'> on line '.$token->[3].' as end tag to <'.$$stack[-1].'>');
494: last;
495: } else {
496: &Apache::lonxml::warning('Found tag </'.$token->[1].'> on line '.$token->[3].' when looking for </'.$$stack[-1].'> in file');
497: &end_tag($stack,$parstack,$token);
498: }
499: }
500: $result = &callsub("end_$token->[1]", $target, $token, $stack,
501: $parstack, $pars,$safeeval, $style_for_target);
1.101 albertel 502: }
503: } else {
504: &Apache::lonxml::error("Unknown token event :$token->[0]:$token->[1]:");
505: }
506: #evaluate variable refs in result
1.282 albertel 507: if ($Apache::lonxml::post_evaluate &&$result ne "") {
1.257 albertel 508: my $extras;
509: if (!$Apache::lonxml::usestyle) {
510: $extras=$Apache::lonxml::style_values;
511: }
1.101 albertel 512: if ( $#$parstack > -1 ) {
1.257 albertel 513: $result=&Apache::run::evaluate($result,$safeeval,$extras.$$parstack[-1]);
1.101 albertel 514: } else {
1.257 albertel 515: $result= &Apache::run::evaluate($result,$safeeval,$extras);
1.101 albertel 516: }
1.163 albertel 517: }
1.282 albertel 518: $Apache::lonxml::post_evaluate=1;
519:
1.190 albertel 520: if (($token->[0] eq 'T') || ($token->[0] eq 'C') || ($token->[0] eq 'D') ) {
1.249 albertel 521: #Style file definitions should be correct
1.250 albertel 522: if ($target eq 'tex' && ($Apache::lonxml::usestyle)) {
1.311 albertel 523: $result=&latex_special_symbols($result);
1.249 albertel 524: }
1.190 albertel 525: }
526:
1.169 albertel 527: if ($Apache::lonxml::redirection) {
528: $Apache::lonxml::outputstack['-1'] .= $result;
529: } else {
530: $finaloutput.=$result;
531: }
532: $result = '';
533:
1.258 albertel 534: if ($token->[0] eq 'E' && !$dontpop) {
1.101 albertel 535: &end_tag($stack,$parstack,$token);
536: }
1.258 albertel 537: $dontpop=0;
1.224 albertel 538: }
1.212 albertel 539: if ($#$pars > -1) {
540: pop @$pars;
541: pop @Apache::lonxml::pwd;
542: }
1.101 albertel 543: }
544:
545: # if ($target eq 'meta') {
546: # $finaloutput.=&endredirection;
547: # }
548:
1.394 albertel 549: if ( $start && $target eq 'grade') { &endredirection(); }
1.389 albertel 550: if ( $Apache::lonxml::redirection > $startredirection) {
551: while ($Apache::lonxml::redirection > $startredirection) {
552: $finaloutput .= &endredirection();
1.387 albertel 553: }
554: }
1.101 albertel 555: if (($ENV{'QUERY_STRING'}) && ($target eq 'web')) {
556: $finaloutput=&afterburn($finaloutput);
1.216 sakharuk 557: }
1.101 albertel 558: return $finaloutput;
559: }
1.67 www 560:
1.318 matthew 561: ##
562: ## Looks to see if there is a subroutine defined for this tag. If so, call it,
563: ## otherwise do not call it as we do not know what it is.
564: ##
1.7 albertel 565: sub callsub {
1.84 albertel 566: my ($sub,$target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.7 albertel 567: my $currentstring='';
1.72 albertel 568: my $nodefault;
1.7 albertel 569: {
1.59 albertel 570: my $sub1;
1.7 albertel 571: no strict 'refs';
1.68 www 572: my $tag=$token->[1];
1.236 www 573: # get utterly rid of extended html tags
574: if ($tag=~/^x\-/i) { return ''; }
1.141 albertel 575: my $space=$Apache::lonxml::alltags{$tag}[-1];
1.68 www 576: if (!$space) {
1.141 albertel 577: $tag=~tr/A-Z/a-z/;
1.68 www 578: $sub=~tr/A-Z/a-z/;
1.141 albertel 579: $space=$Apache::lonxml::alltags{$tag}[-1]
1.68 www 580: }
1.97 albertel 581:
582: my $deleted=0;
583: $Apache::lonxml::curdepth=join('_',@Apache::lonxml::depthcounter);
584: if (($token->[0] eq 'S') && ($target eq 'modified')) {
585: $deleted=&Apache::edit::handle_delete($space,$target,$token,$tagstack,
586: $parstack,$parser,$safeeval,
587: $style);
588: }
589: if (!$deleted) {
590: if ($space) {
1.220 albertel 591: #&Apache::lonxml::debug("Calling sub $sub in $space $metamode");
1.97 albertel 592: $sub1="$space\:\:$sub";
593: ($currentstring,$nodefault) = &$sub1($target,$token,$tagstack,
594: $parstack,$parser,$safeeval,
595: $style);
596: } else {
1.318 matthew 597: if ($target eq 'tex') {
598: # throw away tag name
599: return '';
600: }
1.220 albertel 601: #&Apache::lonxml::debug("NOT Calling sub $sub in $space $metamode");
1.97 albertel 602: if ($metamode <1) {
603: if (defined($token->[4]) && ($metamode < 1)) {
604: $currentstring = $token->[4];
605: } else {
606: $currentstring = $token->[2];
607: }
1.62 sakharuk 608: }
1.7 albertel 609: }
1.97 albertel 610: # &Apache::lonxml::debug("nodefalt:$nodefault:");
611: if ($currentstring eq '' && $nodefault eq '') {
612: if ($target eq 'edit') {
1.220 albertel 613: #&Apache::lonxml::debug("doing default edit for $token->[1]");
1.97 albertel 614: if ($token->[0] eq 'S') {
615: $currentstring = &Apache::edit::tag_start($target,$token);
616: } elsif ($token->[0] eq 'E') {
617: $currentstring = &Apache::edit::tag_end($target,$token);
618: }
619: } elsif ($target eq 'modified') {
620: if ($token->[0] eq 'S') {
621: $currentstring = $token->[4];
622: $currentstring.=&Apache::edit::handle_insert();
1.210 www 623: } elsif ($token->[0] eq 'E') {
624: $currentstring = $token->[2];
625: $currentstring.=&Apache::edit::handle_insertafter($token->[1]);
1.97 albertel 626: } else {
627: $currentstring = $token->[2];
628: }
1.72 albertel 629: }
630: }
1.7 albertel 631: }
632: use strict 'refs';
633: }
634: return $currentstring;
1.82 ng 635: }
636:
1.96 albertel 637: sub setup_globals {
1.172 albertel 638: my ($request,$target)=@_;
639: $Apache::lonxml::request=$request;
1.99 albertel 640: $Apache::lonxml::registered = 0;
1.325 www 641: @Apache::lonxml::htmlareafields=();
1.205 www 642: $errorcount=0;
643: $warningcount=0;
1.207 albertel 644: $Apache::lonxml::default_homework_loaded=0;
1.212 albertel 645: $Apache::lonxml::usestyle=1;
1.204 albertel 646: &init_counter();
1.101 albertel 647: @Apache::lonxml::pwd=();
1.124 albertel 648: @Apache::lonxml::extlinks=();
1.281 albertel 649: @Apache::lonxml::ssi_info=();
1.282 albertel 650: $Apache::lonxml::post_evaluate=1;
1.295 albertel 651: $Apache::lonxml::warnings_error_header='';
1.397 ! albertel 652: $Apache::lonxml::substitute_LaTeX_symbols = 1;
1.96 albertel 653: if ($target eq 'meta') {
654: $Apache::lonxml::redirection = 0;
655: $Apache::lonxml::metamode = 1;
656: $Apache::lonxml::evaluate = 1;
657: $Apache::lonxml::import = 0;
1.129 albertel 658: } elsif ($target eq 'answer') {
659: $Apache::lonxml::redirection = 0;
660: $Apache::lonxml::metamode = 1;
661: $Apache::lonxml::evaluate = 1;
662: $Apache::lonxml::import = 1;
1.96 albertel 663: } elsif ($target eq 'grade') {
1.387 albertel 664: &startredirection(); #ended in inner_xmlparse on exit
1.96 albertel 665: $Apache::lonxml::metamode = 0;
666: $Apache::lonxml::evaluate = 1;
667: $Apache::lonxml::import = 1;
668: } elsif ($target eq 'modified') {
669: $Apache::lonxml::redirection = 0;
670: $Apache::lonxml::metamode = 0;
671: $Apache::lonxml::evaluate = 0;
672: $Apache::lonxml::import = 0;
673: } elsif ($target eq 'edit') {
674: $Apache::lonxml::redirection = 0;
675: $Apache::lonxml::metamode = 0;
676: $Apache::lonxml::evaluate = 0;
677: $Apache::lonxml::import = 0;
1.163 albertel 678: } elsif ($target eq 'analyze') {
679: $Apache::lonxml::redirection = 0;
680: $Apache::lonxml::metamode = 0;
681: $Apache::lonxml::evaluate = 1;
682: $Apache::lonxml::import = 1;
1.96 albertel 683: } else {
684: $Apache::lonxml::redirection = 0;
685: $Apache::lonxml::metamode = 0;
686: $Apache::lonxml::evaluate = 1;
687: $Apache::lonxml::import = 1;
688: }
689: }
690:
1.82 ng 691: sub init_safespace {
692: my ($target,$safeeval,$safehole,$safeinit) = @_;
1.393 albertel 693: $safeeval->deny_only(':dangerous');
694: $safeeval->reval('use Math::Complex;');
1.383 albertel 695: $safeeval->permit_only(":default");
1.82 ng 696: $safeeval->permit("entereval");
697: $safeeval->permit(":base_math");
698: $safeeval->permit("sort");
1.286 albertel 699: $safeeval->permit("time");
1.371 albertel 700: $safeeval->deny("rand");
701: $safeeval->deny("srand");
1.82 ng 702: $safeeval->deny(":base_io");
1.102 albertel 703: $safehole->wrap(\&Apache::scripttag::xmlparse,$safeeval,'&xmlparse');
1.251 albertel 704: $safehole->wrap(\&Apache::outputtags::multipart,$safeeval,'&multipart');
1.82 ng 705: $safehole->wrap(\&Apache::lonnet::EXT,$safeeval,'&EXT');
1.324 albertel 706: $safehole->wrap(\&Apache::chemresponse::chem_standard_order,$safeeval,
707: '&chem_standard_order');
1.369 albertel 708: $safehole->wrap(\&Apache::response::check_status,$safeeval,'&check_status');
1.324 albertel 709:
1.82 ng 710: $safehole->wrap(\&Math::Cephes::asin,$safeeval,'&asin');
711: $safehole->wrap(\&Math::Cephes::acos,$safeeval,'&acos');
712: $safehole->wrap(\&Math::Cephes::atan,$safeeval,'&atan');
713: $safehole->wrap(\&Math::Cephes::sinh,$safeeval,'&sinh');
714: $safehole->wrap(\&Math::Cephes::cosh,$safeeval,'&cosh');
715: $safehole->wrap(\&Math::Cephes::tanh,$safeeval,'&tanh');
716: $safehole->wrap(\&Math::Cephes::asinh,$safeeval,'&asinh');
717: $safehole->wrap(\&Math::Cephes::acosh,$safeeval,'&acosh');
718: $safehole->wrap(\&Math::Cephes::atanh,$safeeval,'&atanh');
719: $safehole->wrap(\&Math::Cephes::erf,$safeeval,'&erf');
720: $safehole->wrap(\&Math::Cephes::erfc,$safeeval,'&erfc');
721: $safehole->wrap(\&Math::Cephes::j0,$safeeval,'&j0');
722: $safehole->wrap(\&Math::Cephes::j1,$safeeval,'&j1');
723: $safehole->wrap(\&Math::Cephes::jn,$safeeval,'&jn');
724: $safehole->wrap(\&Math::Cephes::jv,$safeeval,'&jv');
725: $safehole->wrap(\&Math::Cephes::y0,$safeeval,'&y0');
726: $safehole->wrap(\&Math::Cephes::y1,$safeeval,'&y1');
727: $safehole->wrap(\&Math::Cephes::yn,$safeeval,'&yn');
728: $safehole->wrap(\&Math::Cephes::yv,$safeeval,'&yv');
1.215 albertel 729:
730: $safehole->wrap(\&Math::Cephes::bdtr ,$safeeval,'&bdtr' );
731: $safehole->wrap(\&Math::Cephes::bdtrc ,$safeeval,'&bdtrc' );
732: $safehole->wrap(\&Math::Cephes::bdtri ,$safeeval,'&bdtri' );
733: $safehole->wrap(\&Math::Cephes::btdtr ,$safeeval,'&btdtr' );
734: $safehole->wrap(\&Math::Cephes::chdtr ,$safeeval,'&chdtr' );
735: $safehole->wrap(\&Math::Cephes::chdtrc,$safeeval,'&chdtrc');
736: $safehole->wrap(\&Math::Cephes::chdtri,$safeeval,'&chdtri');
737: $safehole->wrap(\&Math::Cephes::fdtr ,$safeeval,'&fdtr' );
738: $safehole->wrap(\&Math::Cephes::fdtrc ,$safeeval,'&fdtrc' );
739: $safehole->wrap(\&Math::Cephes::fdtri ,$safeeval,'&fdtri' );
740: $safehole->wrap(\&Math::Cephes::gdtr ,$safeeval,'&gdtr' );
741: $safehole->wrap(\&Math::Cephes::gdtrc ,$safeeval,'&gdtrc' );
742: $safehole->wrap(\&Math::Cephes::nbdtr ,$safeeval,'&nbdtr' );
743: $safehole->wrap(\&Math::Cephes::nbdtrc,$safeeval,'&nbdtrc');
744: $safehole->wrap(\&Math::Cephes::nbdtri,$safeeval,'&nbdtri');
745: $safehole->wrap(\&Math::Cephes::ndtr ,$safeeval,'&ndtr' );
746: $safehole->wrap(\&Math::Cephes::ndtri ,$safeeval,'&ndtri' );
747: $safehole->wrap(\&Math::Cephes::pdtr ,$safeeval,'&pdtr' );
748: $safehole->wrap(\&Math::Cephes::pdtrc ,$safeeval,'&pdtrc' );
749: $safehole->wrap(\&Math::Cephes::pdtri ,$safeeval,'&pdtri' );
750: $safehole->wrap(\&Math::Cephes::stdtr ,$safeeval,'&stdtr' );
751: $safehole->wrap(\&Math::Cephes::stdtri,$safeeval,'&stdtri');
752:
1.383 albertel 753: $safehole->wrap(\&Math::Cephes::Matrix::mat,$safeeval,'&mat');
754: $safehole->wrap(\&Math::Cephes::Matrix::new,$safeeval,
755: '&Math::Cephes::Matrix::new');
756: $safehole->wrap(\&Math::Cephes::Matrix::coef,$safeeval,
757: '&Math::Cephes::Matrix::coef');
758: $safehole->wrap(\&Math::Cephes::Matrix::clr,$safeeval,
759: '&Math::Cephes::Matrix::clr');
760: $safehole->wrap(\&Math::Cephes::Matrix::add,$safeeval,
761: '&Math::Cephes::Matrix::add');
762: $safehole->wrap(\&Math::Cephes::Matrix::sub,$safeeval,
763: '&Math::Cephes::Matrix::sub');
764: $safehole->wrap(\&Math::Cephes::Matrix::mul,$safeeval,
765: '&Math::Cephes::Matrix::mul');
766: $safehole->wrap(\&Math::Cephes::Matrix::div,$safeeval,
767: '&Math::Cephes::Matrix::div');
768: $safehole->wrap(\&Math::Cephes::Matrix::inv,$safeeval,
769: '&Math::Cephes::Matrix::inv');
770: $safehole->wrap(\&Math::Cephes::Matrix::transp,$safeeval,
771: '&Math::Cephes::Matrix::transp');
772: $safehole->wrap(\&Math::Cephes::Matrix::simq,$safeeval,
773: '&Math::Cephes::Matrix::simq');
774: $safehole->wrap(\&Math::Cephes::Matrix::mat_to_vec,$safeeval,
775: '&Math::Cephes::Matrix::mat_to_vec');
776: $safehole->wrap(\&Math::Cephes::Matrix::vec_to_mat,$safeeval,
777: '&Math::Cephes::Matrix::vec_to_mat');
778: $safehole->wrap(\&Math::Cephes::Matrix::check,$safeeval,
779: '&Math::Cephes::Matrix::check');
780: $safehole->wrap(\&Math::Cephes::Matrix::check,$safeeval,
781: '&Math::Cephes::Matrix::check');
782:
1.215 albertel 783: # $safehole->wrap(\&Math::Cephes::new_fract,$safeeval,'&new_fract');
784: # $safehole->wrap(\&Math::Cephes::radd,$safeeval,'&radd');
785: # $safehole->wrap(\&Math::Cephes::rsub,$safeeval,'&rsub');
786: # $safehole->wrap(\&Math::Cephes::rmul,$safeeval,'&rmul');
787: # $safehole->wrap(\&Math::Cephes::rdiv,$safeeval,'&rdiv');
788: # $safehole->wrap(\&Math::Cephes::euclid,$safeeval,'&euclid');
789:
1.91 ng 790: $safehole->wrap(\&Math::Random::random_beta,$safeeval,'&math_random_beta');
791: $safehole->wrap(\&Math::Random::random_chi_square,$safeeval,'&math_random_chi_square');
792: $safehole->wrap(\&Math::Random::random_exponential,$safeeval,'&math_random_exponential');
793: $safehole->wrap(\&Math::Random::random_f,$safeeval,'&math_random_f');
794: $safehole->wrap(\&Math::Random::random_gamma,$safeeval,'&math_random_gamma');
795: $safehole->wrap(\&Math::Random::random_multivariate_normal,$safeeval,'&math_random_multivariate_normal');
796: $safehole->wrap(\&Math::Random::random_multinomial,$safeeval,'&math_random_multinomial');
797: $safehole->wrap(\&Math::Random::random_noncentral_chi_square,$safeeval,'&math_random_noncentral_chi_square');
798: $safehole->wrap(\&Math::Random::random_noncentral_f,$safeeval,'&math_random_noncentral_f');
799: $safehole->wrap(\&Math::Random::random_normal,$safeeval,'&math_random_normal');
800: $safehole->wrap(\&Math::Random::random_permutation,$safeeval,'&math_random_permutation');
1.93 ng 801: $safehole->wrap(\&Math::Random::random_permuted_index,$safeeval,'&math_random_permuted_index');
1.91 ng 802: $safehole->wrap(\&Math::Random::random_uniform,$safeeval,'&math_random_uniform');
803: $safehole->wrap(\&Math::Random::random_poisson,$safeeval,'&math_random_poisson');
804: $safehole->wrap(\&Math::Random::random_uniform_integer,$safeeval,'&math_random_uniform_integer');
805: $safehole->wrap(\&Math::Random::random_negative_binomial,$safeeval,'&math_random_negative_binomial');
806: $safehole->wrap(\&Math::Random::random_binomial,$safeeval,'&math_random_binomial');
807: $safehole->wrap(\&Math::Random::random_seed_from_phrase,$safeeval,'&random_seed_from_phrase');
808: $safehole->wrap(\&Math::Random::random_set_seed_from_phrase,$safeeval,'&random_set_seed_from_phrase');
809: $safehole->wrap(\&Math::Random::random_get_seed,$safeeval,'&random_get_seed');
810: $safehole->wrap(\&Math::Random::random_set_seed,$safeeval,'&random_set_seed');
1.305 albertel 811: $safehole->wrap(\&Apache::lonxml::error,$safeeval,'&LONCAPA_INTERNAL_ERROR');
1.311 albertel 812: $safehole->wrap(\&Apache::lonxml::debug,$safeeval,'&LONCAPA_INTERNAL_DEBUG');
1.322 albertel 813: $safehole->wrap(\&Apache::caparesponse::get_sigrange,$safeeval,'&LONCAPA_INTERNAL_get_sigrange');
1.91 ng 814:
1.82 ng 815: #need to inspect this class of ops
816: # $safeeval->deny(":base_orig");
1.331 albertel 817: $safeeval->permit("require");
1.91 ng 818: $safeinit .= ';$external::target="'.$target.'";';
1.82 ng 819: &Apache::run::run($safeinit,$safeeval);
1.373 albertel 820: &initialize_rndseed($safeeval);
821: }
1.303 albertel 822:
1.393 albertel 823: sub clean_safespace {
824: my ($safeeval) = @_;
825: delete_package_recurse($safeeval->{Root});
826: }
827:
828: sub delete_package_recurse {
829: my ($package) = @_;
830: my @subp;
831: {
832: no strict 'refs';
833: while (my ($key,$val) = each(%{*{"$package\::"}})) {
834: if (!defined($val)) { next; }
835: local (*ENTRY) = $val;
836: if (defined *ENTRY{HASH} && $key =~ /::$/ &&
837: $key ne "main::" && $key ne "<none>::")
838: {
839: my ($p) = $package ne "main" ? "$package\::" : "";
840: ($p .= $key) =~ s/::$//;
841: push(@subp,$p);
842: }
843: }
844: }
845: foreach my $p (@subp) {
846: delete_package_recurse($p);
847: }
848: Symbol::delete_package($package);
849: }
850:
1.373 albertel 851: sub initialize_rndseed {
852: my ($safeeval)=@_;
853: my $rndseed;
854: my ($symb,$courseid,$domain,$name) = &Apache::lonxml::whichuser();
855: $rndseed=&Apache::lonnet::rndseed($symb,$courseid,$domain,$name);
856: my $safeinit = '$external::randomseed="'.$rndseed.'";';
857: &Apache::lonxml::debug("Setting rndseed to $rndseed");
858: &Apache::run::run($safeinit,$safeeval);
1.207 albertel 859: }
860:
861: sub default_homework_load {
862: my ($safeeval)=@_;
863: &Apache::lonxml::debug('Loading default_homework');
864: my $default=&Apache::lonnet::getfile('/home/httpd/html/res/adm/includes/default_homework.lcpm');
1.241 albertel 865: if ($default eq -1) {
1.207 albertel 866: &Apache::lonxml::error("<b>Unable to find <i>default_homework.lcpm</i></b>");
867: } else {
868: &Apache::run::run($default,$safeeval);
869: $Apache::lonxml::default_homework_loaded=1;
870: }
1.17 albertel 871: }
872:
1.358 albertel 873: {
874: my $alarm_depth;
875: sub init_alarm {
876: alarm(0);
877: $alarm_depth=0;
878: }
879:
880: sub start_alarm {
881: if ($alarm_depth<1) {
882: my $old=alarm($Apache::lonnet::perlvar{'lonScriptTimeout'});
883: if ($old) {
884: &Apache::lonxml::error("Cancelled an alarm of $old, this shouldn't occur.");
885: }
886: }
887: $alarm_depth++;
888: }
889:
890: sub end_alarm {
891: $alarm_depth--;
892: if ($alarm_depth<1) { alarm(0); }
893: }
894: }
1.328 albertel 895: my $metamode_was;
1.55 albertel 896: sub startredirection {
1.328 albertel 897: if (!$Apache::lonxml::redirection) {
898: $metamode_was=$Apache::lonxml::metamode;
899: }
900: $Apache::lonxml::metamode=0;
901: $Apache::lonxml::redirection++;
902: push (@Apache::lonxml::outputstack, '');
1.55 albertel 903: }
904:
905: sub endredirection {
1.328 albertel 906: if (!$Apache::lonxml::redirection) {
1.380 www 907: &Apache::lonxml::error("Endredirection was called before a startredirection, perhaps you have unbalanced tags. Some debugging information:".join ":",caller);
1.328 albertel 908: return '';
909: }
910: $Apache::lonxml::redirection--;
911: if (!$Apache::lonxml::redirection) {
912: $Apache::lonxml::metamode=$metamode_was;
913: }
914: pop @Apache::lonxml::outputstack;
1.97 albertel 915: }
916:
917: sub end_tag {
918: my ($tagstack,$parstack,$token)=@_;
919: pop(@$tagstack);
920: pop(@$parstack);
921: &decreasedepth($token);
1.55 albertel 922: }
923:
1.17 albertel 924: sub initdepth {
925: @Apache::lonxml::depthcounter=();
926: $Apache::lonxml::depth=-1;
927: $Apache::lonxml::olddepth=-1;
928: }
929:
1.339 albertel 930: my @timers;
931: my $lasttime;
1.17 albertel 932: sub increasedepth {
1.19 albertel 933: my ($token) = @_;
1.17 albertel 934: $Apache::lonxml::depth++;
935: $Apache::lonxml::depthcounter[$Apache::lonxml::depth]++;
936: if ($Apache::lonxml::depthcounter[$Apache::lonxml::depth]==1) {
937: $Apache::lonxml::olddepth=$Apache::lonxml::depth;
938: }
1.340 albertel 939: my $time;
940: if ($Apache::lonxml::debug eq "1") {
941: push(@timers,[&gettimeofday()]);
942: $time=&tv_interval($lasttime);
943: $lasttime=[&gettimeofday()];
944: }
1.339 albertel 945: my $spacing=' 'x($Apache::lonxml::depth-1);
1.42 albertel 946: my $curdepth=join('_',@Apache::lonxml::depthcounter);
1.339 albertel 947: &Apache::lonxml::debug("s$spacing$Apache::lonxml::depth : $Apache::lonxml::olddepth : $curdepth : $token->[1] : $time : \n");
1.54 albertel 948: #print "<br />s $Apache::lonxml::depth : $Apache::lonxml::olddepth : $curdepth : $token->[1]\n";
1.17 albertel 949: }
950:
951: sub decreasedepth {
1.19 albertel 952: my ($token) = @_;
1.17 albertel 953: $Apache::lonxml::depth--;
1.36 albertel 954: if ($Apache::lonxml::depth<$Apache::lonxml::olddepth-1) {
955: $#Apache::lonxml::depthcounter--;
956: $Apache::lonxml::olddepth=$Apache::lonxml::depth+1;
957: }
1.43 albertel 958: if ( $Apache::lonxml::depth < -1) {
1.280 www 959: &Apache::lonxml::warning(&mt("Missing tags, unable to properly run file."));
1.43 albertel 960: $Apache::lonxml::depth='-1';
961: }
1.340 albertel 962: my ($timer,$time);
963: if ($Apache::lonxml::debug eq "1") {
964: $timer=pop(@timers);
965: $time=&tv_interval($lasttime);
966: $lasttime=[&gettimeofday()];
967: }
1.339 albertel 968: my $spacing=' 'x$Apache::lonxml::depth;
1.42 albertel 969: my $curdepth=join('_',@Apache::lonxml::depthcounter);
1.339 albertel 970: &Apache::lonxml::debug("e$spacing$Apache::lonxml::depth : $Apache::lonxml::olddepth : $curdepth : $token->[1] : $time : ".&tv_interval($timer)."\n");
1.54 albertel 971: #print "<br />e $Apache::lonxml::depth : $Apache::lonxml::olddepth : $token->[1] : $curdepth\n";
1.1 sakharuk 972: }
1.19 albertel 973:
1.180 albertel 974: sub get_all_text_unbalanced {
1.190 albertel 975: #there is a copy of this in lonpublisher.pm
1.326 albertel 976: my($tag,$pars)= @_;
977: my $token;
978: my $result='';
979: $tag='<'.$tag.'>';
980: while ($token = $$pars[-1]->get_token) {
981: if (($token->[0] eq 'T')||($token->[0] eq 'C')||($token->[0] eq 'D')) {
1.386 albertel 982: if ($token->[0] eq 'T' && $token->[2]) {
1.382 albertel 983: $result.='<![CDATA['.$token->[1].']]>';
984: } else {
985: $result.=$token->[1];
986: }
1.326 albertel 987: } elsif ($token->[0] eq 'PI') {
988: $result.=$token->[2];
989: } elsif ($token->[0] eq 'S') {
990: $result.=$token->[4];
991: } elsif ($token->[0] eq 'E') {
992: $result.=$token->[2];
993: }
994: if ($result =~ /\Q$tag\E/is) {
995: ($result,my $redo)=$result =~ /(.*)\Q$tag\E(.*)/is;
996: #&Apache::lonxml::debug('Got a winner with leftovers ::'.$2);
997: #&Apache::lonxml::debug('Result is :'.$1);
998: $redo=$tag.$redo;
999: &Apache::lonxml::newparser($pars,\$redo);
1000: last;
1001: }
1002: }
1003: return $result
1.204 albertel 1004: }
1005:
1006: sub increment_counter {
1.247 albertel 1007: my ($increment) = @_;
1.289 sakharuk 1008: if (defined($increment) && $increment gt 0) {
1009: $Apache::lonxml::counter+=$increment;
1010: } else {
1011: $Apache::lonxml::counter++;
1.247 albertel 1012: }
1.289 sakharuk 1013: $Apache::lonxml::counter_changed=1;
1.204 albertel 1014: }
1015:
1016: sub init_counter {
1.391 albertel 1017: if ($env{'request.state'} eq 'construct') {
1018: $Apache::lonxml::counter=1;
1019: $Apache::lonxml::counter_changed=1;
1020: } elsif (defined($env{'form.counter'})) {
1.372 albertel 1021: $Apache::lonxml::counter=$env{'form.counter'};
1.247 albertel 1022: $Apache::lonxml::counter_changed=0;
1.237 sakharuk 1023: } else {
1.204 albertel 1024: $Apache::lonxml::counter=1;
1.247 albertel 1025: $Apache::lonxml::counter_changed=1;
1.204 albertel 1026: }
1027: }
1028:
1029: sub store_counter {
1030: &Apache::lonnet::appenv(('form.counter' => $Apache::lonxml::counter));
1031: return '';
1.180 albertel 1032: }
1033:
1.19 albertel 1034: sub get_all_text {
1.270 albertel 1035: my($tag,$pars,$style)= @_;
1036: my $gotfullstack=1;
1037: if (ref($pars) ne 'ARRAY') {
1038: $gotfullstack=0;
1039: $pars=[$pars];
1040: }
1041: if (ref($style) ne 'HASH') {
1042: $style={};
1043: }
1044: my $depth=0;
1045: my $token;
1046: my $result='';
1047: if ( $tag =~ m:^/: ) {
1048: my $tag=substr($tag,1);
1049: #&Apache::lonxml::debug("have:$tag:");
1050: my $top_empty=0;
1051: while (($depth >=0) && ($#$pars > -1) && (!$top_empty)) {
1052: while (($depth >=0) && ($token = $$pars[-1]->get_token)) {
1053: #&Apache::lonxml::debug("e token:$token->[0]:$depth:$token->[1]:".$#$pars.":".$#Apache::lonxml::pwd);
1054: if (($token->[0] eq 'T')||($token->[0] eq 'C')||($token->[0] eq 'D')) {
1.382 albertel 1055: if ($token->[2]) {
1056: $result.='<![CDATA['.$token->[1].']]>';
1057: } else {
1058: $result.=$token->[1];
1059: }
1.270 albertel 1060: } elsif ($token->[0] eq 'PI') {
1061: $result.=$token->[2];
1062: } elsif ($token->[0] eq 'S') {
1.316 albertel 1063: if ($token->[1] =~ /^\Q$tag\E$/i) { $depth++; }
1064: if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_ON$/) { $Apache::lonxml::usestyle=1; }
1065: if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_OFF$/) { $Apache::lonxml::usestyle=0; }
1.270 albertel 1066: $result.=$token->[4];
1067: } elsif ($token->[0] eq 'E') {
1.316 albertel 1068: if ( $token->[1] =~ /^\Q$tag\E$/i) { $depth--; }
1.270 albertel 1069: #skip sending back the last end tag
1.283 albertel 1070: if ($depth == 0 && exists($$style{'/'.$token->[1]}) && $Apache::lonxml::usestyle) {
1.270 albertel 1071: my $string=
1072: '<LONCAPA_INTERNAL_TURN_STYLE_OFF end="yes" />'.
1073: $$style{'/'.$token->[1]}.
1074: $token->[2].
1075: '<LONCAPA_INTERNAL_TURN_STYLE_ON />';
1076: &Apache::lonxml::newparser($pars,\$string);
1077: #&Apache::lonxml::debug("reParsing $string");
1078: next;
1079: }
1080: if ($depth > -1) {
1081: $result.=$token->[2];
1082: } else {
1083: $$pars[-1]->unget_token($token);
1084: }
1085: }
1086: }
1087: if (($depth >=0) && ($#$pars == 0) ) { $top_empty=1; }
1088: if (($depth >=0) && ($#$pars > 0) ) {
1089: pop(@$pars);
1090: pop(@Apache::lonxml::pwd);
1091: }
1092: }
1093: if ($top_empty && $depth >= 0) {
1094: #never found the end tag ran out of text, throw error send back blank
1095: &error('Never found end tag for <'.$tag.
1096: '> current string <pre>'.
1.314 albertel 1097: &HTML::Entities::encode($result,'<>&"').
1.270 albertel 1098: '</pre>');
1099: if ($gotfullstack) {
1100: my $newstring='</'.$tag.'>'.$result;
1101: &Apache::lonxml::newparser($pars,\$newstring);
1102: }
1103: $result='';
1104: }
1105: } else {
1106: while ($#$pars > -1) {
1107: while ($token = $$pars[-1]->get_token) {
1108: #&Apache::lonxml::debug("s token:$token->[0]:$depth:$token->[1]");
1109: if (($token->[0] eq 'T')||($token->[0] eq 'C')||
1110: ($token->[0] eq 'D')) {
1.382 albertel 1111: if ($token->[2]) {
1112: $result.='<![CDATA['.$token->[1].']]>';
1113: } else {
1114: $result.=$token->[1];
1115: }
1.270 albertel 1116: } elsif ($token->[0] eq 'PI') {
1117: $result.=$token->[2];
1118: } elsif ($token->[0] eq 'S') {
1.316 albertel 1119: if ( $token->[1] =~ /^\Q$tag\E$/i) {
1.270 albertel 1120: $$pars[-1]->unget_token($token); last;
1121: } else {
1122: $result.=$token->[4];
1123: }
1.316 albertel 1124: if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_ON$/) { $Apache::lonxml::usestyle=1; }
1125: if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_OFF$/) { $Apache::lonxml::usestyle=0; }
1.270 albertel 1126: } elsif ($token->[0] eq 'E') {
1127: $result.=$token->[2];
1128: }
1129: }
1130: if (($#$pars > 0) ) {
1131: pop(@$pars);
1132: pop(@Apache::lonxml::pwd);
1133: } else { last; }
1134: }
1135: }
1136: #&Apache::lonxml::debug("Exit:$result:");
1137: return $result
1.19 albertel 1138: }
1139:
1.23 albertel 1140: sub newparser {
1141: my ($parser,$contentref,$dir) = @_;
1.167 albertel 1142: push (@$parser,HTML::LCParser->new($contentref));
1.365 albertel 1143: $$parser[-1]->xml_mode(1);
1144: $$parser[-1]->marked_sections(1);
1.23 albertel 1145: if ( $dir eq '' ) {
1146: push (@Apache::lonxml::pwd, $Apache::lonxml::pwd[$#Apache::lonxml::pwd]);
1147: } else {
1148: push (@Apache::lonxml::pwd, $dir);
1149: }
1150: }
1.1 sakharuk 1151:
1.8 albertel 1152: sub parstring {
1153: my ($token) = @_;
1154: my $temp='';
1.142 albertel 1155: foreach (@{$token->[3]}) {
1.35 www 1156: unless ($_=~/\W/) {
1.42 albertel 1157: my $val=$token->[2]->{$_};
1.231 albertel 1158: $val =~ s/([\%\@\\\"\'])/\\$1/g;
1.342 albertel 1159: $val =~ s/(\$[^{a-zA-Z_])/\\$1/g;
1.346 albertel 1160: $val =~ s/(\$)$/\\$1/;
1.51 albertel 1161: #if ($val =~ m/^[\%\@]/) { $val="\\".$val; }
1.267 sakharuk 1162: $temp .= "my \$$_=\"$val\";";
1.20 albertel 1163: }
1.142 albertel 1164: }
1.8 albertel 1165: return $temp;
1166: }
1.22 albertel 1167:
1.384 albertel 1168: sub extlink {
1169: my ($res,$exact)=@_;
1170: if (!$exact) {
1171: $res=&Apache::lonnet::hreflocation($Apache::lonxml::pwd[-1],$res);
1172: }
1173: push(@Apache::lonxml::extlinks,$res)
1174: }
1175:
1.34 www 1176: sub writeallows {
1.126 www 1177: unless ($#extlinks>=0) { return; }
1.377 albertel 1178: my $thisurl = &Apache::lonnet::clutter(shift);
1.372 albertel 1179: if ($env{'httpref.'.$thisurl}) {
1180: $thisurl=$env{'httpref.'.$thisurl};
1.111 www 1181: }
1.34 www 1182: my $thisdir=$thisurl;
1183: $thisdir=~s/\/[^\/]+$//;
1184: my %httpref=();
1.142 albertel 1185: foreach (@extlinks) {
1.34 www 1186: $httpref{'httpref.'.
1.125 www 1187: &Apache::lonnet::hreflocation($thisdir,$_)}=$thisurl;
1.142 albertel 1188: }
1.126 www 1189: @extlinks=();
1.34 www 1190: &Apache::lonnet::appenv(%httpref);
1191: }
1192:
1.281 albertel 1193: sub register_ssi {
1194: my ($url,%form)=@_;
1195: push (@Apache::lonxml::ssi_info,{'url'=>$url,'form'=>\%form});
1196: return '';
1197: }
1198:
1199: sub do_registered_ssi {
1200: foreach my $info (@Apache::lonxml::ssi_info) {
1201: my %form=%{ $info->{'form'}};
1202: my $url=$info->{'url'};
1203: &Apache::lonnet::ssi($url,%form);
1204: }
1205: }
1.66 www 1206: #
1207: # Afterburner handles anchors, highlights and links
1208: #
1209: sub afterburn {
1210: my $result=shift;
1.154 albertel 1211: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
1212: ['highlight','anchor','link']);
1.372 albertel 1213: if ($env{'form.highlight'}) {
1214: foreach (split(/\,/,$env{'form.highlight'})) {
1.66 www 1215: my $anchorname=$_;
1216: my $matchthis=$anchorname;
1217: $matchthis=~s/\_+/\\s\+/g;
1.317 albertel 1218: $result=~s/(\Q$matchthis\E)/\<font color=\"red\"\>$1\<\/font\>/gs;
1.142 albertel 1219: }
1.66 www 1220: }
1.372 albertel 1221: if ($env{'form.link'}) {
1222: foreach (split(/\,/,$env{'form.link'})) {
1.66 www 1223: my ($anchorname,$linkurl)=split(/\>/,$_);
1224: my $matchthis=$anchorname;
1225: $matchthis=~s/\_+/\\s\+/g;
1.317 albertel 1226: $result=~s/(\Q$matchthis\E)/\<a href=\"$linkurl\"\>$1\<\/a\>/gs;
1.142 albertel 1227: }
1.66 www 1228: }
1.372 albertel 1229: if ($env{'form.anchor'}) {
1230: my $anchorname=$env{'form.anchor'};
1.66 www 1231: my $matchthis=$anchorname;
1232: $matchthis=~s/\_+/\\s\+/g;
1.317 albertel 1233: $result=~s/(\Q$matchthis\E)/\<a name=\"$anchorname\"\>$1\<\/a\>/s;
1.66 www 1234: $result.=(<<"ENDSCRIPT");
1.226 albertel 1235: <script type="text/javascript">
1.66 www 1236: document.location.hash='$anchorname';
1237: </script>
1238: ENDSCRIPT
1239: }
1240: return $result;
1241: }
1242:
1.79 www 1243: sub storefile {
1244: my ($file,$contents)=@_;
1.290 albertel 1245: &Apache::lonnet::correct_line_ends(\$contents);
1.79 www 1246: if (my $fh=Apache::File->new('>'.$file)) {
1247: print $fh $contents;
1248: $fh->close();
1.271 www 1249: return 1;
1.147 albertel 1250: } else {
1.271 www 1251: &warning("Unable to save file $file");
1252: return 0;
1.79 www 1253: }
1254: }
1255:
1.151 albertel 1256: sub createnewhtml {
1.321 www 1257: my $title=&mt('Title of document goes here');
1258: my $body=&mt('Body of document goes here');
1259: my $filecontents=(<<SIMPLECONTENT);
1.78 www 1260: <html>
1261: <head>
1.321 www 1262: <title>$title</title>
1.78 www 1263: </head>
1264: <body bgcolor="#FFFFFF">
1.321 www 1265: $body
1.78 www 1266: </body>
1267: </html>
1268: SIMPLECONTENT
1.321 www 1269: return $filecontents;
1.151 albertel 1270: }
1271:
1.274 albertel 1272: sub createnewsty {
1273: my $filecontents=(<<SIMPLECONTENT);
1274: <definetag name="">
1275: <render>
1276: <web></web>
1277: <tex></tex>
1278: </render>
1279: </definetag>
1280: SIMPLECONTENT
1281: return $filecontents;
1282: }
1283:
1.147 albertel 1284:
1.151 albertel 1285: sub inserteditinfo {
1.274 albertel 1286: my ($result,$filecontents,$filetype)=@_;
1.314 albertel 1287: $filecontents = &HTML::Entities::encode($filecontents,'<>&"');
1.147 albertel 1288: # my $editheader='<a href="#editsection">Edit below</a><hr />';
1.274 albertel 1289: my $xml_help = '';
1.321 www 1290: my $initialize='';
1.274 albertel 1291: if ($filetype eq 'html') {
1.323 www 1292: my $addbuttons=&Apache::lonhtmlcommon::htmlareaaddbuttons();
1.333 www 1293: $initialize=&Apache::lonhtmlcommon::htmlareaheaders().
1.347 albertel 1294: &Apache::lonhtmlcommon::spellheader();
1295: if (!&Apache::lonhtmlcommon::htmlareablocked() &&
1296: &Apache::lonhtmlcommon::htmlareabrowser()) {
1297: $initialize.=(<<FULLPAGE);
1.321 www 1298: <script type="text/javascript">
1.323 www 1299: $addbuttons
1300:
1.321 www 1301: HTMLArea.loadPlugin("FullPage");
1302:
1303: function initDocument() {
1.323 www 1304: var editor=new HTMLArea("filecont",config);
1.321 www 1305: editor.registerPlugin(FullPage);
1306: editor.generate();
1307: }
1308: </script>
1309: FULLPAGE
1.347 albertel 1310: } else {
1311: $initialize.=(<<FULLPAGE);
1312: <script type="text/javascript">
1313: $addbuttons
1314: function initDocument() {
1315: }
1316: </script>
1317: FULLPAGE
1318: }
1.321 www 1319: $result=~s/\<body([^\>]*)\>/\<body onload="initDocument()" $1\>/i;
1320: $xml_help=&Apache::loncommon::helpLatexCheatsheet();
1.274 albertel 1321: }
1322: my $cleanbut = '';
1.374 www 1323:
1.254 albertel 1324: my $titledisplay=&display_title();
1.280 www 1325: my %lt=&Apache::lonlocal::texthash('st' => 'Save this',
1326: 'vi' => 'View',
1327: 'ed' => 'Edit');
1.161 albertel 1328: my $buttons=(<<BUTTONS);
1.274 albertel 1329: $cleanbut
1.304 matthew 1330: <input type="submit" name="savethisfile" accesskey="s" value="$lt{'st'}" />
1331: <input type="submit" name="viewmode" accesskey="v" value="$lt{'vi'}" />
1.161 albertel 1332: BUTTONS
1.333 www 1333: $buttons.=&Apache::lonhtmlcommon::spelllink('xmledit','filecont');
1.338 albertel 1334: $buttons.=&Apache::lonhtmlcommon::htmlareaselectactive('filecont');
1.78 www 1335: my $editfooter=(<<ENDFOOTER);
1.321 www 1336: $initialize
1.78 www 1337: <hr />
1338: <a name="editsection" />
1.333 www 1339: <form method="post" name="xmledit">
1.240 albertel 1340: $xml_help
1.280 www 1341: <input type="hidden" name="editmode" value="$lt{'ed'}" />
1.170 www 1342: $buttons<br />
1.366 albertel 1343: <textarea style="width:100%" cols="80" rows="44" name="filecont" id="filecont">$filecontents</textarea>
1.170 www 1344: <br />$buttons
1.78 www 1345: <br />
1346: </form>
1.254 albertel 1347: $titledisplay
1.321 www 1348: </body>
1.78 www 1349: ENDFOOTER
1.147 albertel 1350: # $result=~s/(\<body[^\>]*\>)/$1$editheader/is;
1.78 www 1351: $result=~s/(\<\/body\>)/$editfooter/is;
1352: return $result;
1353: }
1354:
1.152 albertel 1355: sub get_target {
1.372 albertel 1356: my $viewgrades=&Apache::lonnet::allowed('vgr',$env{'request.course.id'});
1357: if ( $env{'request.state'} eq 'published') {
1358: if ( defined($env{'form.grade_target'})
1.152 albertel 1359: && ($viewgrades == 'F' )) {
1.372 albertel 1360: return ($env{'form.grade_target'});
1361: } elsif (defined($env{'form.grade_target'})) {
1362: if (($env{'form.grade_target'} eq 'web') ||
1363: ($env{'form.grade_target'} eq 'tex') ) {
1364: return $env{'form.grade_target'}
1.153 albertel 1365: } else {
1366: return 'web';
1367: }
1.152 albertel 1368: } else {
1369: return 'web';
1370: }
1.372 albertel 1371: } elsif ($env{'request.state'} eq 'construct') {
1372: if ( defined($env{'form.grade_target'})) {
1373: return ($env{'form.grade_target'});
1.152 albertel 1374: } else {
1375: return 'web';
1376: }
1377: } else {
1378: return 'web';
1379: }
1380: }
1381:
1.24 sakharuk 1382: sub handler {
1.255 sakharuk 1383: my $request=shift;
1384:
1385: my $target=&get_target();
1386:
1.372 albertel 1387: $Apache::lonxml::debug=$env{'user.debug'};
1.255 sakharuk 1388:
1.364 albertel 1389: &Apache::loncommon::content_type($request,'text/html');
1.255 sakharuk 1390: &Apache::loncommon::no_cache($request);
1.372 albertel 1391: if ($env{'request.state'} eq 'published') {
1.363 albertel 1392: $request->set_last_modified(&Apache::lonnet::metadata($request->uri,
1393: 'lastrevisiondate'));
1394: }
1.255 sakharuk 1395: $request->send_http_header;
1396:
1397: return OK if $request->header_only;
1.68 www 1398:
1399:
1.255 sakharuk 1400: my $file=&Apache::lonnet::filelocation("",$request->uri);
1.274 albertel 1401: my $filetype;
1402: if ($file =~ /\.sty$/) {
1403: $filetype='sty';
1404: } else {
1405: $filetype='html';
1406: }
1.78 www 1407: #
1408: # Edit action? Save file.
1409: #
1.372 albertel 1410: unless ($env{'request.state'} eq 'published') {
1.374 www 1411: if ($env{'form.savethisfile'}) {
1.372 albertel 1412: if (&storefile($file,$env{'form.filecont'})) {
1.309 albertel 1413: &Apache::lonxml::info("<font COLOR=\"#0000FF\">".
1414: &mt('Updated').": ".
1415: &Apache::lonlocal::locallocaltime(time).
1416: " </font>");
1.271 www 1417: }
1.255 sakharuk 1418: }
1419: }
1420: my %mystyle;
1421: my $result = '';
1422: my $filecontents=&Apache::lonnet::getfile($file);
1423: if ($filecontents eq -1) {
1.284 www 1424: my $bodytag=&Apache::loncommon::bodytag('File Error');
1425: my $fnf=&mt('File not found');
1.255 sakharuk 1426: $result=(<<ENDNOTFOUND);
1.78 www 1427: <html>
1428: <head>
1.284 www 1429: <title>$fnf</title>
1.78 www 1430: </head>
1.284 www 1431: $bodytag
1432: <b>$fnf: $file</b>
1.78 www 1433: </body>
1434: </html>
1435: ENDNOTFOUND
1.343 albertel 1436: $filecontents='';
1.372 albertel 1437: if ($env{'request.state'} ne 'published') {
1.274 albertel 1438: if ($filetype eq 'sty') {
1439: $filecontents=&createnewsty();
1440: } else {
1441: $filecontents=&createnewhtml();
1442: }
1.372 albertel 1443: $env{'form.editmode'}='Edit'; #force edit mode
1.255 sakharuk 1444: }
1445: } else {
1.372 albertel 1446: unless ($env{'request.state'} eq 'published') {
1.343 albertel 1447: if ($filecontents=~/BEGIN LON-CAPA Internal/) {
1.381 www 1448: &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 1449: }
1.264 www 1450: #
1451: # we are in construction space, see if edit mode forced
1.385 albertel 1452: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
1453: ['editmode']);
1.255 sakharuk 1454: }
1.372 albertel 1455: if (!$env{'form.editmode'} || $env{'form.viewmode'}) {
1.255 sakharuk 1456: $result = &Apache::lonxml::xmlparse($request,$target,$filecontents,
1457: '',%mystyle);
1.368 albertel 1458: undef($Apache::lonhomework::parsing_a_task);
1.385 albertel 1459: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
1460: ['rawmode']);
1.395 albertel 1461: if ($env{'form.rawmode'}) { $result = $filecontents; }
1.255 sakharuk 1462: }
1.147 albertel 1463: }
1.255 sakharuk 1464:
1.78 www 1465: #
1466: # Edit action? Insert editing commands
1467: #
1.372 albertel 1468: unless ($env{'request.state'} eq 'published') {
1469: if ($env{'form.editmode'} && (!($env{'form.viewmode'}))) {
1.255 sakharuk 1470: my $displayfile=$request->uri;
1471: $displayfile=~s/^\/[^\/]*//;
1.349 albertel 1472: my $bodytag='<body bgcolor="#FFFFFF">';
1.372 albertel 1473: if ($env{'environment.remote'} eq 'off') {
1.349 albertel 1474: $bodytag=&Apache::loncommon::bodytag();
1475: }
1476: $result='<html>'.$bodytag.
1.309 albertel 1477: &Apache::lonxml::message_location().'<h3>'.
1478: $displayfile.
1.255 sakharuk 1479: '</h3></body></html>';
1.274 albertel 1480: $result=&inserteditinfo($result,$filecontents,$filetype);
1.255 sakharuk 1481: }
1.147 albertel 1482: }
1.274 albertel 1483: if ($filetype eq 'html') { writeallows($request->uri); }
1484:
1.255 sakharuk 1485:
1.309 albertel 1486: &Apache::lonxml::add_messages(\$result);
1.255 sakharuk 1487: $request->print($result);
1488:
1489: return OK;
1.253 albertel 1490: }
1491:
1492: sub display_title {
1493: my $result;
1.372 albertel 1494: if ($env{'request.state'} eq 'construct') {
1.253 albertel 1495: my $title=&Apache::lonnet::gettitle();
1496: if (!defined($title) || $title eq '') {
1.372 albertel 1497: $title = $env{'request.filename'};
1.253 albertel 1498: $title = substr($title, rindex($title, '/') + 1);
1499: }
1500: $result = "<script type='text/javascript'>top.document.title = '$title - LON-CAPA Construction Space';</script>";
1501: }
1502: return $result;
1.24 sakharuk 1503: }
1.147 albertel 1504:
1.22 albertel 1505: sub debug {
1.298 albertel 1506: if ($Apache::lonxml::debug eq "1") {
1507: $|=1;
1.300 albertel 1508: my $request=$Apache::lonxml::request;
1.388 albertel 1509: if (!$request) {
1510: eval { $request=Apache->request; };
1511: }
1512: if (!$request) {
1513: eval { $request=Apache2::RequestUtil->request; };
1514: }
1.314 albertel 1515: $request->print('<font size="-2"><pre>DEBUG:'.&HTML::Entities::encode($_[0],'<>&"')."</pre></font>\n");
1.346 albertel 1516: #&Apache::lonnet::logthis($_[0]);
1.298 albertel 1517: }
1.22 albertel 1518: }
1.49 albertel 1519:
1.348 albertel 1520: sub show_error_warn_msg {
1.372 albertel 1521: if ($env{'request.filename'} eq '/home/httpd/html/res/lib/templates/simpleproblem.problem' &&
1522: &Apache::lonnet::allowed('mdc',$env{'request.course.id'})) {
1.351 albertel 1523: return 1;
1524: }
1.348 albertel 1525: return (($Apache::lonxml::debug eq 1) ||
1.372 albertel 1526: ($env{'request.state'} eq 'construct') ||
1.348 albertel 1527: ($Apache::lonhomework::browse eq 'F'
1528: &&
1.372 albertel 1529: $env{'form.show_errors'} eq 'on'));
1.348 albertel 1530: }
1531:
1.22 albertel 1532: sub error {
1.336 albertel 1533: $errorcount++;
1.348 albertel 1534: if ( &show_error_warn_msg() ) {
1.336 albertel 1535: # If printing in construction space, put the error inside <pre></pre>
1536: push(@Apache::lonxml::error_messages,
1537: $Apache::lonxml::warnings_error_header.
1538: "<b>ERROR:</b>".join("<br />\n",@_)."<br />\n");
1539: $Apache::lonxml::warnings_error_header='';
1540: } else {
1541: my $errormsg;
1542: my ($symb)=&Apache::lonnet::symbread();
1543: if ( !$symb ) {
1544: #public or browsers
1545: $errormsg=&mt("An error occured while processing this resource. The author has been notified.");
1546: }
1547: #notify author
1.372 albertel 1548: &Apache::lonmsg::author_res_msg($env{'request.filename'},join('<br />',@_));
1.336 albertel 1549: #notify course
1.372 albertel 1550: if ( $symb && $env{'request.course.id'} ) {
1.380 www 1551: my $cnum=$env{'course.'.$env{'request.course.id'}.'.num'};
1552: my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
1.336 albertel 1553: my (undef,%users)=&Apache::lonfeedback::decide_receiver(undef,0,1,1,1);
1.372 albertel 1554: my $declutter=&Apache::lonnet::declutter($env{'request.filename'});
1.336 albertel 1555: my @userlist;
1556: foreach (keys %users) {
1557: my ($user,$domain) = split(/:/, $_);
1558: push(@userlist,"$user\@$domain");
1.380 www 1559: my $key=$declutter.'_'.$user.'_'.$domain;
1560: my %lastnotified=&Apache::lonnet::get('nohist_xmlerrornotifications',
1561: [$key],
1562: $cdom,$cnum);
1563: my $now=time;
1564: if ($now-$lastnotified{$key}>86400) {
1565: &Apache::lonmsg::user_normal_msg($user,$domain,
1.336 albertel 1566: "Error [$declutter]",join('<br />',@_));
1.380 www 1567: &Apache::lonnet::put('nohist_xmlerrornotifications',
1568: {$key => $now},
1569: $cdom,$cnum);
1570: }
1.336 albertel 1571: }
1.372 albertel 1572: if ($env{'request.role.adv'}) {
1.336 albertel 1573: $errormsg=&mt("An error occured while processing this resource. The course personnel ([_1]) and the author have been notified.",join(', ',@userlist));
1574: } else {
1575: $errormsg=&mt("An error occured while processing this resource. The instructor has been notified.");
1576: }
1577: }
1578: push(@Apache::lonxml::error_messages,"<b>$errormsg</b> <br />");
1.52 albertel 1579: }
1.22 albertel 1580: }
1.49 albertel 1581:
1.22 albertel 1582: sub warning {
1.295 albertel 1583: $warningcount++;
1.261 albertel 1584:
1.372 albertel 1585: if ($env{'form.grade_target'} ne 'tex') {
1.348 albertel 1586: if ( &show_error_warn_msg() ) {
1.309 albertel 1587: push(@Apache::lonxml::warning_messages,
1588: $Apache::lonxml::warnings_error_header.
1589: "<b>W</b>ARNING<b>:</b>".join('<br />',@_)."<br />\n");
1.295 albertel 1590: $Apache::lonxml::warnings_error_header='';
1591: }
1592: }
1.309 albertel 1593: }
1594:
1595: sub info {
1.372 albertel 1596: if ($env{'form.grade_target'} ne 'tex'
1597: && $env{'request.state'} eq 'construct') {
1.309 albertel 1598: push(@Apache::lonxml::info_messages,join('<br />',@_)."<br />\n");
1599: }
1600: }
1601:
1602: sub message_location {
1603: return '__LONCAPA_INTERNAL_MESSAGE_LOCATION__';
1604: }
1605:
1606: sub add_messages {
1607: my ($msg)=@_;
1608: my $result=join(' ',
1609: @Apache::lonxml::info_messages,
1610: @Apache::lonxml::error_messages,
1611: @Apache::lonxml::warning_messages);
1612: undef(@Apache::lonxml::info_messages);
1613: undef(@Apache::lonxml::error_messages);
1614: undef(@Apache::lonxml::warning_messages);
1615: $$msg=~s/__LONCAPA_INTERNAL_MESSAGE_LOCATION__/$result/;
1616: $$msg=~s/__LONCAPA_INTERNAL_MESSAGE_LOCATION__//g;
1.83 albertel 1617: }
1618:
1619: sub get_param {
1.213 albertel 1620: my ($param,$parstack,$safeeval,$context,$case_insensitive) = @_;
1621: if ( ! $context ) { $context = -1; }
1622: my $args ='';
1623: if ( $#$parstack > (-2-$context) ) { $args=$$parstack[$context]; }
1.297 sakharuk 1624: if ( ! $Apache::lonxml::usestyle ) {
1625: $args=$Apache::lonxml::style_values.$args;
1626: }
1.213 albertel 1627: if ( ! $args ) { return undef; }
1628: if ( $case_insensitive ) {
1629: if ($args =~ s/(my \$)(\Q$param\E)(=\")/$1.lc($2).$3/ei) {
1630: return &Apache::run::run("{$args;".'return $'.$param.'}',
1631: $safeeval); #'
1632: } else {
1633: return undef;
1634: }
1635: } else {
1636: if ( $args =~ /my \$\Q$param\E=\"/ ) {
1637: return &Apache::run::run("{$args;".'return $'.$param.'}',
1638: $safeeval); #'
1639: } else {
1640: return undef;
1641: }
1642: }
1.22 albertel 1643: }
1644:
1.132 albertel 1645: sub get_param_var {
1.213 albertel 1646: my ($param,$parstack,$safeeval,$context,$case_insensitive) = @_;
1.132 albertel 1647: if ( ! $context ) { $context = -1; }
1648: my $args ='';
1649: if ( $#$parstack > (-2-$context) ) { $args=$$parstack[$context]; }
1.297 sakharuk 1650: if ( ! $Apache::lonxml::usestyle ) {
1651: $args=$Apache::lonxml::style_values.$args;
1652: }
1.230 albertel 1653: &Apache::lonxml::debug("Args are $args param is $param");
1.213 albertel 1654: if ($case_insensitive) {
1655: if (! ($args=~s/(my \$)(\Q$param\E)(=\")/$1.lc($2).$3/ei)) {
1656: return undef;
1657: }
1658: } elsif ( $args !~ /my \$\Q$param\E=\"/ ) { return undef; }
1.132 albertel 1659: my $value=&Apache::run::run("{$args;".'return $'.$param.'}',$safeeval); #'
1.230 albertel 1660: &Apache::lonxml::debug("first run is $value");
1.341 albertel 1661: if ($value =~ /^[\$\@\%][a-zA-Z_]\w*$/) {
1.230 albertel 1662: &Apache::lonxml::debug("doing second");
1663: my @result=&Apache::run::run("return $value",$safeeval,1);
1664: if (!defined($result[0])) {
1665: return $value
1666: } else {
1667: if (wantarray) { return @result; } else { return $result[0]; }
1668: }
1.132 albertel 1669: } else {
1670: return $value;
1671: }
1672: }
1673:
1.74 albertel 1674: sub register_insert {
1.75 albertel 1675: my @data = split /\n/, &Apache::lonnet::getfile('/home/httpd/lonTabs/insertlist.tab');
1.74 albertel 1676: my $i;
1.76 albertel 1677: my $tagnum=0;
1.74 albertel 1678: my @order;
1679: for ($i=0;$i < $#data; $i++) {
1680: my $line = $data[$i];
1681: if ( $line =~ /^\#/ || $line =~ /^\s*\n/) { next; }
1682: if ( $line =~ /TABLE/ ) { last; }
1.268 bowersj2 1683: my ($tag,$descrip,$color,$function,$show,$helpfile,$helpdesc) = split(/,/, $line);
1.135 albertel 1684: if ($tag) {
1685: $insertlist{"$tagnum.tag"} = $tag;
1686: $insertlist{"$tagnum.description"} = $descrip;
1687: $insertlist{"$tagnum.color"} = $color;
1688: $insertlist{"$tagnum.function"} = $function;
1689: if (!defined($show)) { $show='yes'; }
1690: $insertlist{"$tagnum.show"}= $show;
1.268 bowersj2 1691: $insertlist{"$tagnum.helpfile"} = $helpfile;
1692: $insertlist{"$tagnum.helpdesc"} = $helpdesc;
1.135 albertel 1693: $insertlist{"$tag.num"}=$tagnum;
1694: $tagnum++;
1695: }
1.74 albertel 1696: }
1.76 albertel 1697: $i++; #skipping TABLE line
1698: $tagnum = 0;
1.74 albertel 1699: for (;$i < $#data;$i++) {
1700: my $line = $data[$i];
1.76 albertel 1701: my ($mnemonic,@which) = split(/ +/,$line);
1702: my $tag = $insertlist{"$tagnum.tag"};
1.144 matthew 1703: for (my $j=0;$j <=$#which;$j++) {
1.74 albertel 1704: if ( $which[$j] eq 'Y' ) {
1.76 albertel 1705: if ($insertlist{"$j.show"} ne 'no') {
1706: push(@{ $insertlist{"$tag.which"} },$j);
1707: }
1.74 albertel 1708: }
1709: }
1.76 albertel 1710: $tagnum++;
1.74 albertel 1711: }
1712: }
1.98 albertel 1713:
1714: sub description {
1715: my ($token)=@_;
1.138 albertel 1716: my $tagnum;
1717: my $tag=$token->[1];
1718: foreach my $namespace (reverse @Apache::lonxml::namespace) {
1719: my $testtag=$namespace.'::'.$tag;
1720: $tagnum=$insertlist{"$testtag.num"};
1721: if (defined($tagnum)) { last; }
1722: }
1723: if (!defined ($tagnum)) { $tagnum=$Apache::lonxml::insertlist{"$tag.num"}; }
1724: return $insertlist{$tagnum.'.description'};
1.268 bowersj2 1725: }
1726:
1727: # Returns a list containing the help file, and the description
1728: sub helpinfo {
1729: my ($token)=@_;
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.'.helpfile'}, $insertlist{$tagnum.'.helpdesc'});
1.98 albertel 1739: }
1.123 albertel 1740:
1741: # ----------------------------------------------------------------- whichuser
1742: # returns a list of $symb, $courseid, $domain, $name that is correct for
1743: # calls to lonnet functions for this setup.
1744: # - looks for form.grade_ parameters
1745: sub whichuser {
1.262 matthew 1746: my ($passedsymb)=@_;
1.245 albertel 1747: my ($symb,$courseid,$domain,$name,$publicuser);
1.372 albertel 1748: if (defined($env{'form.grade_symb'})) {
1.350 albertel 1749: my ($tmp_courseid)=
1750: &Apache::loncommon::get_env_multiple('form.grade_courseid');
1751: my $allowed=&Apache::lonnet::allowed('vgr',$tmp_courseid);
1752: if (!$allowed &&
1.372 albertel 1753: exists($env{'request.course.sec'}) &&
1754: $env{'request.course.sec'} !~ /^\s*$/) {
1.350 albertel 1755: $allowed=&Apache::lonnet::allowed('vgr',$tmp_courseid.
1.372 albertel 1756: '/'.$env{'request.course.sec'});
1.350 albertel 1757: }
1758: if ($allowed) {
1759: ($symb)=&Apache::loncommon::get_env_multiple('form.grade_symb');
1760: $courseid=$tmp_courseid;
1761: ($domain)=&Apache::loncommon::get_env_multiple('form.grade_domain');
1762: ($name)=&Apache::loncommon::get_env_multiple('form.grade_username');
1763: return ($symb,$courseid,$domain,$name,$publicuser);
1764: }
1765: }
1766: if (!$passedsymb) {
1767: $symb=&Apache::lonnet::symbread();
1.134 albertel 1768: } else {
1.350 albertel 1769: $symb=$passedsymb;
1770: }
1.372 albertel 1771: $courseid=$env{'request.course.id'};
1772: $domain=$env{'user.domain'};
1773: $name=$env{'user.name'};
1.350 albertel 1774: if ($name eq 'public' && $domain eq 'public') {
1.372 albertel 1775: if (!defined($env{'form.username'})) {
1776: $env{'form.username'}.=time.rand(10000000);
1.244 albertel 1777: }
1.372 albertel 1778: $name.=$env{'form.username'};
1.123 albertel 1779: }
1.245 albertel 1780: return ($symb,$courseid,$domain,$name,$publicuser);
1.123 albertel 1781: }
1782:
1.1 sakharuk 1783: 1;
1784: __END__
1.68 www 1785:
1786:
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