Annotation of loncom/xml/lonxml.pm, revision 1.430.2.1
1.2 sakharuk 1: # The LearningOnline Network with CAPA
1.3 sakharuk 2: # XML Parser Module
1.2 sakharuk 3: #
1.430.2.1! albertel 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();
1.280 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:
1.172 albertel 126: # a pointer the the Apache request object
127: $Apache::lonxml::request='';
128:
1.216 sakharuk 129: # a problem number counter, and check on ether it is used
1.237 sakharuk 130: $Apache::lonxml::counter=1;
1.204 albertel 131: $Apache::lonxml::counter_changed=0;
132:
1.212 albertel 133: #internal check on whether to look at style defs
134: $Apache::lonxml::usestyle=1;
1.260 albertel 135:
136: #locations used to store the parameter string for style substitutions
137: $Apache::lonxml::style_values='';
138: $Apache::lonxml::style_end_values='';
1.212 albertel 139:
1.281 albertel 140: #array of ssi calls that need to occur after we are done parsing
141: @Apache::lonxml::ssi_info=();
142:
1.282 albertel 143: #should we do the postag variable interpolation
144: $Apache::lonxml::post_evaluate=1;
145:
1.295 albertel 146: #a header message to emit in the case of any generated warning or errors
147: $Apache::lonxml::warnings_error_header='';
148:
1.396 foxr 149: # Control whether or not LaTeX symbols should be substituted for their
150: # \ style equivalents...this may be turned off e.g. in an verbatim
151: # environment.
152:
153: $Apache::lonxml::substitute_LaTeX_symbols = 1; # Starts out on.
154:
155: sub enable_LaTeX_substitutions {
156: $Apache::lonxml::substitute_LaTeX_symbols = 1;
157: }
158: sub disable_LaTeX_substitutions {
159: $Apache::lonxml::substitute_LaTeX_symbols = 0;
160: }
161:
1.68 www 162: sub xmlend {
1.335 sakharuk 163: my ($target,$parser)=@_;
1.278 www 164: my $mode='xml';
165: my $status='OPEN';
1.368 albertel 166: if ($Apache::lonhomework::parsing_a_problem ||
167: $Apache::lonhomework::parsing_a_task ) {
1.278 www 168: $mode='problem';
169: $status=$Apache::inputtags::status[-1];
170: }
1.362 matthew 171: my $discussion;
1.379 albertel 172: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
173: ['LONCAPA_INTERNAL_no_discussion']);
1.372 albertel 174: if (! exists($env{'form.LONCAPA_INTERNAL_no_discussion'}) ||
175: $env{'form.LONCAPA_INTERNAL_no_discussion'} ne 'true') {
1.362 matthew 176: $discussion=&Apache::lonfeedback::list_discussion($mode,$status);
177: }
1.334 sakharuk 178: if ($target eq 'tex') {
1.335 sakharuk 179: $discussion.='<tex>\keephidden{ENDOFPROBLEM}\vskip 0.5mm\noindent\makebox[\textwidth/$number_of_columns][b]{\hrulefill}\end{document}</tex>';
1.334 sakharuk 180: &Apache::lonxml::newparser($parser,\$discussion,'');
181: return '';
182: }
1.405 albertel 183:
1.407 albertel 184: return $discussion;
1.119 www 185: }
186:
187: sub tokeninputfield {
1.120 www 188: my $defhost=$Apache::lonnet::perlvar{'lonHostID'};
189: $defhost=~tr/a-z/A-Z/;
1.119 www 190: return (<<ENDINPUTFIELD)
1.226 albertel 191: <script type="text/javascript">
1.120 www 192: function updatetoken() {
193: var comp=new Array;
194: var barcode=unescape(document.tokeninput.barcode.value);
195: comp=barcode.split('*');
196: if (typeof(comp[0])!="undefined") {
197: document.tokeninput.codeone.value=comp[0];
198: }
199: if (typeof(comp[1])!="undefined") {
200: document.tokeninput.codetwo.value=comp[1];
201: }
202: if (typeof(comp[2])!="undefined") {
203: comp[2]=comp[2].toUpperCase();
204: document.tokeninput.codethree.value=comp[2];
205: }
206: document.tokeninput.barcode.value='';
207: }
208: </script>
209: <form method="post" name="tokeninput">
1.119 www 210: <table border="2" bgcolor="#FFFFBB">
211: <tr><th>DocID Checkin</th></tr>
212: <tr><td>
213: <table>
214: <tr>
215: <td>Scan in Barcode</td>
1.120 www 216: <td><input type="text" size="22" name="barcode"
217: onChange="updatetoken()"/></td>
1.119 www 218: </tr>
219: <tr><td><i>or</i> Type in DocID</td>
220: <td>
221: <input type="text" size="5" name="codeone" />
1.120 www 222: <b><font size="+2">*</font></b>
1.119 www 223: <input type="text" size="5" name="codetwo" />
1.120 www 224: <b><font size="+2">*</font></b>
225: <input type="text" size="10" name="codethree" value="$defhost"
226: onChange="this.value=this.value.toUpperCase()" />
1.119 www 227: </td></tr>
228: </table>
229: </td></tr>
230: <tr><td><input type="submit" value="Check in DocID" /></td></tr>
231: </table>
232: </form>
233: ENDINPUTFIELD
1.112 www 234: }
235:
1.116 www 236: sub maketoken {
1.118 www 237: my ($symb,$tuname,$tudom,$tcrsid)=@_;
1.112 www 238: unless ($symb) {
239: $symb=&Apache::lonnet::symbread();
240: }
241: unless ($tuname) {
1.372 albertel 242: $tuname=$env{'user.name'};
243: $tudom=$env{'user.domain'};
244: $tcrsid=$env{'request.course.id'};
1.112 www 245: }
1.116 www 246:
1.118 www 247: return &Apache::lonnet::checkout($symb,$tuname,$tudom,$tcrsid);
248: }
249:
250: sub printtokenheader {
1.133 albertel 251: my ($target,$token,$tsymb,$tcrsid,$tudom,$tuname)=@_;
1.116 www 252: unless ($token) { return ''; }
1.118 www 253:
1.423 albertel 254: my ($symb,$courseid,$domain,$name) = &Apache::lonnet::whichuser();
1.133 albertel 255: unless ($tsymb) {
256: $tsymb=$symb;
1.118 www 257: }
258: unless ($tuname) {
1.133 albertel 259: $tuname=$name;
260: $tudom=$domain;
261: $tcrsid=$courseid;
1.118 www 262: }
1.114 www 263:
1.390 albertel 264: my $plainname=&Apache::loncommon::plainname($tuname,$tudom);
1.114 www 265:
1.112 www 266: if ($target eq 'web') {
1.145 www 267: my %idhash=&Apache::lonnet::idrget($tudom,($tuname));
1.115 www 268: return
1.221 albertel 269: '<img align="right" src="/cgi-bin/barcode.png?encode='.$token.'" />'.
1.284 www 270: &mt('Checked out for').' '.$plainname.
271: '<br />'.&mt('User').': '.$tuname.' at '.$tudom.
272: '<br />'.&mt('ID').': '.$idhash{$tuname}.
273: '<br />'.&mt('CourseID').': '.$tcrsid.
1.372 albertel 274: '<br />'.&mt('Course').': '.$env{'course.'.$tcrsid.'.description'}.
1.284 www 275: '<br />'.&mt('DocID').': '.$token.
276: '<br />'.&mt('Time').': '.&Apache::lonlocal::locallocaltime().'<hr />';
1.112 www 277: } else {
1.121 albertel 278: return $token;
1.112 www 279: }
1.68 www 280: }
281:
1.48 albertel 282: sub printalltags {
283: my $temp;
284: foreach $temp (sort keys %Apache::lonxml::alltags) {
1.141 albertel 285: &Apache::lonxml::debug("$temp -- ".
286: join(',',@{ $Apache::lonxml::alltags{$temp} }));
1.48 albertel 287: }
288: }
1.31 sakharuk 289:
1.3 sakharuk 290: sub xmlparse {
1.172 albertel 291: my ($request,$target,$content_file_string,$safeinit,%style_for_target) = @_;
1.96 albertel 292:
1.172 albertel 293: &setup_globals($request,$target);
1.232 albertel 294: &Apache::inputtags::initialize_inputtags();
1.370 albertel 295: &Apache::bridgetask::initialize_bridgetask();
1.232 albertel 296: &Apache::outputtags::initialize_outputtags();
297: &Apache::edit::initialize_edit();
1.287 albertel 298: &Apache::londefdef::initialize_londefdef();
1.244 albertel 299:
1.178 www 300: #
301: # do we have a course style file?
302: #
303:
1.372 albertel 304: if ($env{'request.course.id'} && $env{'request.state'} ne 'construct') {
1.178 www 305: my $bodytext=
1.372 albertel 306: $env{'course.'.$env{'request.course.id'}.'.default_xml_style'};
1.178 www 307: if ($bodytext) {
1.337 albertel 308: foreach my $file (split(',',$bodytext)) {
309: my $location=&Apache::lonnet::filelocation('',$file);
310: my $styletext=&Apache::lonnet::getfile($location);
311: if ($styletext ne '-1') {
312: %style_for_target = (%style_for_target,
313: &Apache::style::styleparser($target,$styletext));
314: }
315: }
316: }
1.372 albertel 317: } elsif ($env{'construct.style'} && ($env{'request.state'} eq 'construct')) {
318: my $location=&Apache::lonnet::filelocation('',$env{'construct.style'});
1.291 sakharuk 319: my $styletext=&Apache::lonnet::getfile($location);
320: if ($styletext ne '-1') {
321: %style_for_target = (%style_for_target,
322: &Apache::style::styleparser($target,$styletext));
323: }
1.178 www 324: }
1.255 sakharuk 325: #&printalltags();
1.16 albertel 326: my @pars = ();
1.372 albertel 327: my $pwd=$env{'request.filename'};
1.23 albertel 328: $pwd =~ s:/[^/]*$::;
329: &newparser(\@pars,\$content_file_string,$pwd);
1.24 sakharuk 330:
1.3 sakharuk 331: my $safeeval = new Safe;
1.40 albertel 332: my $safehole = new Safe::Hole;
1.82 ng 333: &init_safespace($target,$safeeval,$safehole,$safeinit);
1.3 sakharuk 334: #-------------------- Redefinition of the target in the case of compound target
335:
336: ($target, my @tenta) = split('&&',$target);
337:
1.150 albertel 338: my @stack = ();
1.3 sakharuk 339: my @parstack = ();
1.358 albertel 340: &initdepth();
341: &init_alarm();
1.101 albertel 342: my $finaloutput = &inner_xmlparse($target,\@stack,\@parstack,\@pars,
1.394 albertel 343: $safeeval,\%style_for_target,1);
1.255 sakharuk 344:
1.425 albertel 345: if (@stack) {
346: &warning("At end of file some tags were still left unclosed, ".
347: '<tt><'.join('></tt>, <tt><',reverse(@stack)).
348: '></tt>');
349: }
1.372 albertel 350: if ($env{'request.uri'}) {
351: &writeallows($env{'request.uri'});
1.125 www 352: }
1.281 albertel 353: &do_registered_ssi();
1.204 albertel 354: if ($Apache::lonxml::counter_changed) { &store_counter() }
1.393 albertel 355:
356: &clean_safespace($safeeval);
357:
1.372 albertel 358: if ($env{'form.return_only_error_and_warning_counts'}) {
1.361 www 359: return "$errorcount:$warningcount";
360: }
1.3 sakharuk 361: return $finaloutput;
1.106 www 362: }
363:
1.191 albertel 364: sub latex_special_symbols {
1.272 albertel 365: my ($string,$where)=@_;
1.396 foxr 366: #
367: # If e.g. in verbatim mode, then don't substitute.
368: # but return original string.
369: #
370: if (!($Apache::lonxml::substitute_LaTeX_symbols)) {
371: return $string;
372: }
1.235 sakharuk 373: if ($where eq 'header') {
1.414 foxr 374: $string =~ s/\\/\$\\backslash\$/g; # \ -> $\backslash$ per LaTex line by line pg 10.
1.311 albertel 375: $string =~ s/(\$|%|\{|\})/\\$1/g;
376: $string=&Apache::lonprintout::character_chart($string);
377: # any & or # leftover should be safe to just escape
378: $string=~s/([^\\])\&/$1\\\&/g;
379: $string=~s/([^\\])\#/$1\\\#/g;
1.415 foxr 380: $string =~ s/_/\\_/g; # _ -> \_
381: $string =~ s/\^/\\\^{}/g; # ^ -> \^{}
1.229 sakharuk 382: } else {
1.312 albertel 383: $string=~s/\\/\\ensuremath{\\backslash}/g;
1.367 albertel 384: $string=~s/\\\%|\%/\\\%/g;
385: $string=~s/\\{|{/\\{/g;
386: $string=~s/\\}|}/\\}/g;
1.378 albertel 387: $string=~s/\\ensuremath\\{\\backslash\\}/\\ensuremath{\\backslash}/g;
1.367 albertel 388: $string=~s/\\\$|\$/\\\$/g;
389: $string=~s/\\\_|\_/\\\_/g;
1.313 albertel 390: $string=~s/([^\\]|^)(\~|\^)/$1\\$2\\strut /g;
1.310 sakharuk 391: $string=~s/(>|<)/\\ensuremath\{$1\}/g; #more or less
1.311 albertel 392: $string=&Apache::lonprintout::character_chart($string);
393: # any & or # leftover should be safe to just escape
1.367 albertel 394: $string=~s/\\\&|\&/\\\&/g;
395: $string=~s/\\\#|\#/\\\#/g;
1.332 sakharuk 396: $string=~s/\|/\$\\mid\$/g;
1.310 sakharuk 397: #single { or } How to escape?
1.229 sakharuk 398: }
1.272 albertel 399: return $string;
1.188 sakharuk 400: }
401:
1.101 albertel 402: sub inner_xmlparse {
1.394 albertel 403: my ($target,$stack,$parstack,$pars,$safeeval,$style_for_target,$start)=@_;
1.101 albertel 404: my $finaloutput = '';
405: my $result;
406: my $token;
1.258 albertel 407: my $dontpop=0;
1.389 albertel 408: my $startredirection = $Apache::lonxml::redirection;
1.101 albertel 409: while ( $#$pars > -1 ) {
410: while ($token = $$pars['-1']->get_token) {
1.261 albertel 411: if (($token->[0] eq 'T') || ($token->[0] eq 'C') ) {
1.101 albertel 412: if ($metamode<1) {
1.190 albertel 413: my $text=$token->[1];
1.193 albertel 414: if ($token->[0] eq 'C' && $target eq 'tex') {
1.239 sakharuk 415: $text = '';
416: # $text = '%'.$text."\n";
1.182 sakharuk 417: }
1.190 albertel 418: $result.=$text;
1.101 albertel 419: }
1.261 albertel 420: } elsif (($token->[0] eq 'D')) {
421: if ($metamode<1 && $target eq 'web') {
422: my $text=$token->[1];
423: $result.=$text;
424: }
1.101 albertel 425: } elsif ($token->[0] eq 'PI') {
1.261 albertel 426: if ($metamode<1 && $target eq 'web') {
1.101 albertel 427: $result=$token->[2];
428: }
429: } elsif ($token->[0] eq 'S') {
1.140 albertel 430: # add tag to stack
1.101 albertel 431: push (@$stack,$token->[1]);
432: # add parameters list to another stack
433: push (@$parstack,&parstring($token));
1.140 albertel 434: &increasedepth($token);
1.212 albertel 435: if ($Apache::lonxml::usestyle &&
436: exists($$style_for_target{$token->[1]})) {
437: $Apache::lonxml::usestyle=0;
438: my $string=$$style_for_target{$token->[1]}.
439: '<LONCAPA_INTERNAL_TURN_STYLE_ON />';
440: &Apache::lonxml::newparser($pars,\$string);
1.257 albertel 441: $Apache::lonxml::style_values=$$parstack[-1];
1.259 albertel 442: $Apache::lonxml::style_end_values=$$parstack[-1];
1.101 albertel 443: } else {
444: $result = &callsub("start_$token->[1]", $target, $token, $stack,
445: $parstack, $pars, $safeeval, $style_for_target);
1.140 albertel 446: }
1.101 albertel 447: } elsif ($token->[0] eq 'E') {
1.212 albertel 448: if ($Apache::lonxml::usestyle &&
449: exists($$style_for_target{'/'."$token->[1]"})) {
450: $Apache::lonxml::usestyle=0;
451: my $string=$$style_for_target{'/'.$token->[1]}.
1.258 albertel 452: '<LONCAPA_INTERNAL_TURN_STYLE_ON end="'.$token->[1].'" />';
1.212 albertel 453: &Apache::lonxml::newparser($pars,\$string);
1.259 albertel 454: $Apache::lonxml::style_values=$Apache::lonxml::style_end_values;
455: $Apache::lonxml::style_end_values='';
1.258 albertel 456: $dontpop=1;
1.101 albertel 457: } else {
1.258 albertel 458: #clear out any tags that didn't end
459: while ($token->[1] ne $$stack['-1'] && ($#$stack > -1)) {
460: my $lasttag=$$stack[-1];
1.317 albertel 461: if ($token->[1] =~ /^\Q$lasttag\E$/i) {
1.258 albertel 462: &Apache::lonxml::warning('Using tag </'.$token->[1].'> on line '.$token->[3].' as end tag to <'.$$stack[-1].'>');
463: last;
464: } else {
465: &Apache::lonxml::warning('Found tag </'.$token->[1].'> on line '.$token->[3].' when looking for </'.$$stack[-1].'> in file');
466: &end_tag($stack,$parstack,$token);
467: }
468: }
469: $result = &callsub("end_$token->[1]", $target, $token, $stack,
470: $parstack, $pars,$safeeval, $style_for_target);
1.101 albertel 471: }
472: } else {
473: &Apache::lonxml::error("Unknown token event :$token->[0]:$token->[1]:");
474: }
475: #evaluate variable refs in result
1.282 albertel 476: if ($Apache::lonxml::post_evaluate &&$result ne "") {
1.257 albertel 477: my $extras;
478: if (!$Apache::lonxml::usestyle) {
479: $extras=$Apache::lonxml::style_values;
480: }
1.101 albertel 481: if ( $#$parstack > -1 ) {
1.257 albertel 482: $result=&Apache::run::evaluate($result,$safeeval,$extras.$$parstack[-1]);
1.101 albertel 483: } else {
1.257 albertel 484: $result= &Apache::run::evaluate($result,$safeeval,$extras);
1.101 albertel 485: }
1.163 albertel 486: }
1.282 albertel 487: $Apache::lonxml::post_evaluate=1;
488:
1.190 albertel 489: if (($token->[0] eq 'T') || ($token->[0] eq 'C') || ($token->[0] eq 'D') ) {
1.249 albertel 490: #Style file definitions should be correct
1.250 albertel 491: if ($target eq 'tex' && ($Apache::lonxml::usestyle)) {
1.311 albertel 492: $result=&latex_special_symbols($result);
1.249 albertel 493: }
1.190 albertel 494: }
495:
1.169 albertel 496: if ($Apache::lonxml::redirection) {
497: $Apache::lonxml::outputstack['-1'] .= $result;
498: } else {
499: $finaloutput.=$result;
500: }
501: $result = '';
502:
1.258 albertel 503: if ($token->[0] eq 'E' && !$dontpop) {
1.101 albertel 504: &end_tag($stack,$parstack,$token);
505: }
1.258 albertel 506: $dontpop=0;
1.224 albertel 507: }
1.212 albertel 508: if ($#$pars > -1) {
509: pop @$pars;
510: pop @Apache::lonxml::pwd;
511: }
1.101 albertel 512: }
513:
514: # if ($target eq 'meta') {
515: # $finaloutput.=&endredirection;
516: # }
517:
1.394 albertel 518: if ( $start && $target eq 'grade') { &endredirection(); }
1.389 albertel 519: if ( $Apache::lonxml::redirection > $startredirection) {
520: while ($Apache::lonxml::redirection > $startredirection) {
521: $finaloutput .= &endredirection();
1.387 albertel 522: }
523: }
1.101 albertel 524: if (($ENV{'QUERY_STRING'}) && ($target eq 'web')) {
525: $finaloutput=&afterburn($finaloutput);
1.216 sakharuk 526: }
1.101 albertel 527: return $finaloutput;
528: }
1.67 www 529:
1.318 matthew 530: ##
531: ## Looks to see if there is a subroutine defined for this tag. If so, call it,
532: ## otherwise do not call it as we do not know what it is.
533: ##
1.7 albertel 534: sub callsub {
1.84 albertel 535: my ($sub,$target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.7 albertel 536: my $currentstring='';
1.72 albertel 537: my $nodefault;
1.7 albertel 538: {
1.59 albertel 539: my $sub1;
1.7 albertel 540: no strict 'refs';
1.68 www 541: my $tag=$token->[1];
1.236 www 542: # get utterly rid of extended html tags
543: if ($tag=~/^x\-/i) { return ''; }
1.141 albertel 544: my $space=$Apache::lonxml::alltags{$tag}[-1];
1.68 www 545: if (!$space) {
1.141 albertel 546: $tag=~tr/A-Z/a-z/;
1.68 www 547: $sub=~tr/A-Z/a-z/;
1.141 albertel 548: $space=$Apache::lonxml::alltags{$tag}[-1]
1.68 www 549: }
1.97 albertel 550:
551: my $deleted=0;
552: $Apache::lonxml::curdepth=join('_',@Apache::lonxml::depthcounter);
553: if (($token->[0] eq 'S') && ($target eq 'modified')) {
554: $deleted=&Apache::edit::handle_delete($space,$target,$token,$tagstack,
555: $parstack,$parser,$safeeval,
556: $style);
557: }
558: if (!$deleted) {
559: if ($space) {
1.220 albertel 560: #&Apache::lonxml::debug("Calling sub $sub in $space $metamode");
1.97 albertel 561: $sub1="$space\:\:$sub";
562: ($currentstring,$nodefault) = &$sub1($target,$token,$tagstack,
563: $parstack,$parser,$safeeval,
564: $style);
565: } else {
1.318 matthew 566: if ($target eq 'tex') {
567: # throw away tag name
568: return '';
569: }
1.220 albertel 570: #&Apache::lonxml::debug("NOT Calling sub $sub in $space $metamode");
1.97 albertel 571: if ($metamode <1) {
572: if (defined($token->[4]) && ($metamode < 1)) {
573: $currentstring = $token->[4];
574: } else {
575: $currentstring = $token->[2];
576: }
1.62 sakharuk 577: }
1.7 albertel 578: }
1.97 albertel 579: # &Apache::lonxml::debug("nodefalt:$nodefault:");
580: if ($currentstring eq '' && $nodefault eq '') {
581: if ($target eq 'edit') {
1.220 albertel 582: #&Apache::lonxml::debug("doing default edit for $token->[1]");
1.97 albertel 583: if ($token->[0] eq 'S') {
584: $currentstring = &Apache::edit::tag_start($target,$token);
585: } elsif ($token->[0] eq 'E') {
586: $currentstring = &Apache::edit::tag_end($target,$token);
587: }
588: } elsif ($target eq 'modified') {
589: if ($token->[0] eq 'S') {
590: $currentstring = $token->[4];
591: $currentstring.=&Apache::edit::handle_insert();
1.210 www 592: } elsif ($token->[0] eq 'E') {
593: $currentstring = $token->[2];
594: $currentstring.=&Apache::edit::handle_insertafter($token->[1]);
1.97 albertel 595: } else {
596: $currentstring = $token->[2];
597: }
1.72 albertel 598: }
599: }
1.7 albertel 600: }
601: use strict 'refs';
602: }
603: return $currentstring;
1.82 ng 604: }
605:
1.96 albertel 606: sub setup_globals {
1.172 albertel 607: my ($request,$target)=@_;
608: $Apache::lonxml::request=$request;
1.205 www 609: $errorcount=0;
610: $warningcount=0;
1.207 albertel 611: $Apache::lonxml::default_homework_loaded=0;
1.212 albertel 612: $Apache::lonxml::usestyle=1;
1.204 albertel 613: &init_counter();
1.101 albertel 614: @Apache::lonxml::pwd=();
1.124 albertel 615: @Apache::lonxml::extlinks=();
1.281 albertel 616: @Apache::lonxml::ssi_info=();
1.282 albertel 617: $Apache::lonxml::post_evaluate=1;
1.295 albertel 618: $Apache::lonxml::warnings_error_header='';
1.397 albertel 619: $Apache::lonxml::substitute_LaTeX_symbols = 1;
1.96 albertel 620: if ($target eq 'meta') {
621: $Apache::lonxml::redirection = 0;
622: $Apache::lonxml::metamode = 1;
623: $Apache::lonxml::evaluate = 1;
624: $Apache::lonxml::import = 0;
1.129 albertel 625: } elsif ($target eq 'answer') {
626: $Apache::lonxml::redirection = 0;
627: $Apache::lonxml::metamode = 1;
628: $Apache::lonxml::evaluate = 1;
629: $Apache::lonxml::import = 1;
1.96 albertel 630: } elsif ($target eq 'grade') {
1.387 albertel 631: &startredirection(); #ended in inner_xmlparse on exit
1.96 albertel 632: $Apache::lonxml::metamode = 0;
633: $Apache::lonxml::evaluate = 1;
634: $Apache::lonxml::import = 1;
635: } elsif ($target eq 'modified') {
636: $Apache::lonxml::redirection = 0;
637: $Apache::lonxml::metamode = 0;
638: $Apache::lonxml::evaluate = 0;
639: $Apache::lonxml::import = 0;
640: } elsif ($target eq 'edit') {
641: $Apache::lonxml::redirection = 0;
642: $Apache::lonxml::metamode = 0;
643: $Apache::lonxml::evaluate = 0;
644: $Apache::lonxml::import = 0;
1.163 albertel 645: } elsif ($target eq 'analyze') {
646: $Apache::lonxml::redirection = 0;
647: $Apache::lonxml::metamode = 0;
648: $Apache::lonxml::evaluate = 1;
649: $Apache::lonxml::import = 1;
1.96 albertel 650: } else {
651: $Apache::lonxml::redirection = 0;
652: $Apache::lonxml::metamode = 0;
653: $Apache::lonxml::evaluate = 1;
654: $Apache::lonxml::import = 1;
655: }
656: }
657:
1.82 ng 658: sub init_safespace {
659: my ($target,$safeeval,$safehole,$safeinit) = @_;
1.393 albertel 660: $safeeval->deny_only(':dangerous');
661: $safeeval->reval('use Math::Complex;');
1.383 albertel 662: $safeeval->permit_only(":default");
1.82 ng 663: $safeeval->permit("entereval");
664: $safeeval->permit(":base_math");
665: $safeeval->permit("sort");
1.286 albertel 666: $safeeval->permit("time");
1.371 albertel 667: $safeeval->deny("rand");
668: $safeeval->deny("srand");
1.82 ng 669: $safeeval->deny(":base_io");
1.102 albertel 670: $safehole->wrap(\&Apache::scripttag::xmlparse,$safeeval,'&xmlparse');
1.251 albertel 671: $safehole->wrap(\&Apache::outputtags::multipart,$safeeval,'&multipart');
1.82 ng 672: $safehole->wrap(\&Apache::lonnet::EXT,$safeeval,'&EXT');
1.324 albertel 673: $safehole->wrap(\&Apache::chemresponse::chem_standard_order,$safeeval,
674: '&chem_standard_order');
1.369 albertel 675: $safehole->wrap(\&Apache::response::check_status,$safeeval,'&check_status');
1.324 albertel 676:
1.82 ng 677: $safehole->wrap(\&Math::Cephes::asin,$safeeval,'&asin');
678: $safehole->wrap(\&Math::Cephes::acos,$safeeval,'&acos');
679: $safehole->wrap(\&Math::Cephes::atan,$safeeval,'&atan');
680: $safehole->wrap(\&Math::Cephes::sinh,$safeeval,'&sinh');
681: $safehole->wrap(\&Math::Cephes::cosh,$safeeval,'&cosh');
682: $safehole->wrap(\&Math::Cephes::tanh,$safeeval,'&tanh');
683: $safehole->wrap(\&Math::Cephes::asinh,$safeeval,'&asinh');
684: $safehole->wrap(\&Math::Cephes::acosh,$safeeval,'&acosh');
685: $safehole->wrap(\&Math::Cephes::atanh,$safeeval,'&atanh');
686: $safehole->wrap(\&Math::Cephes::erf,$safeeval,'&erf');
687: $safehole->wrap(\&Math::Cephes::erfc,$safeeval,'&erfc');
688: $safehole->wrap(\&Math::Cephes::j0,$safeeval,'&j0');
689: $safehole->wrap(\&Math::Cephes::j1,$safeeval,'&j1');
690: $safehole->wrap(\&Math::Cephes::jn,$safeeval,'&jn');
691: $safehole->wrap(\&Math::Cephes::jv,$safeeval,'&jv');
692: $safehole->wrap(\&Math::Cephes::y0,$safeeval,'&y0');
693: $safehole->wrap(\&Math::Cephes::y1,$safeeval,'&y1');
694: $safehole->wrap(\&Math::Cephes::yn,$safeeval,'&yn');
695: $safehole->wrap(\&Math::Cephes::yv,$safeeval,'&yv');
1.215 albertel 696:
697: $safehole->wrap(\&Math::Cephes::bdtr ,$safeeval,'&bdtr' );
698: $safehole->wrap(\&Math::Cephes::bdtrc ,$safeeval,'&bdtrc' );
699: $safehole->wrap(\&Math::Cephes::bdtri ,$safeeval,'&bdtri' );
700: $safehole->wrap(\&Math::Cephes::btdtr ,$safeeval,'&btdtr' );
701: $safehole->wrap(\&Math::Cephes::chdtr ,$safeeval,'&chdtr' );
702: $safehole->wrap(\&Math::Cephes::chdtrc,$safeeval,'&chdtrc');
703: $safehole->wrap(\&Math::Cephes::chdtri,$safeeval,'&chdtri');
704: $safehole->wrap(\&Math::Cephes::fdtr ,$safeeval,'&fdtr' );
705: $safehole->wrap(\&Math::Cephes::fdtrc ,$safeeval,'&fdtrc' );
706: $safehole->wrap(\&Math::Cephes::fdtri ,$safeeval,'&fdtri' );
707: $safehole->wrap(\&Math::Cephes::gdtr ,$safeeval,'&gdtr' );
708: $safehole->wrap(\&Math::Cephes::gdtrc ,$safeeval,'&gdtrc' );
709: $safehole->wrap(\&Math::Cephes::nbdtr ,$safeeval,'&nbdtr' );
710: $safehole->wrap(\&Math::Cephes::nbdtrc,$safeeval,'&nbdtrc');
711: $safehole->wrap(\&Math::Cephes::nbdtri,$safeeval,'&nbdtri');
712: $safehole->wrap(\&Math::Cephes::ndtr ,$safeeval,'&ndtr' );
713: $safehole->wrap(\&Math::Cephes::ndtri ,$safeeval,'&ndtri' );
714: $safehole->wrap(\&Math::Cephes::pdtr ,$safeeval,'&pdtr' );
715: $safehole->wrap(\&Math::Cephes::pdtrc ,$safeeval,'&pdtrc' );
716: $safehole->wrap(\&Math::Cephes::pdtri ,$safeeval,'&pdtri' );
717: $safehole->wrap(\&Math::Cephes::stdtr ,$safeeval,'&stdtr' );
718: $safehole->wrap(\&Math::Cephes::stdtri,$safeeval,'&stdtri');
719:
1.383 albertel 720: $safehole->wrap(\&Math::Cephes::Matrix::mat,$safeeval,'&mat');
721: $safehole->wrap(\&Math::Cephes::Matrix::new,$safeeval,
722: '&Math::Cephes::Matrix::new');
723: $safehole->wrap(\&Math::Cephes::Matrix::coef,$safeeval,
724: '&Math::Cephes::Matrix::coef');
725: $safehole->wrap(\&Math::Cephes::Matrix::clr,$safeeval,
726: '&Math::Cephes::Matrix::clr');
727: $safehole->wrap(\&Math::Cephes::Matrix::add,$safeeval,
728: '&Math::Cephes::Matrix::add');
729: $safehole->wrap(\&Math::Cephes::Matrix::sub,$safeeval,
730: '&Math::Cephes::Matrix::sub');
731: $safehole->wrap(\&Math::Cephes::Matrix::mul,$safeeval,
732: '&Math::Cephes::Matrix::mul');
733: $safehole->wrap(\&Math::Cephes::Matrix::div,$safeeval,
734: '&Math::Cephes::Matrix::div');
735: $safehole->wrap(\&Math::Cephes::Matrix::inv,$safeeval,
736: '&Math::Cephes::Matrix::inv');
737: $safehole->wrap(\&Math::Cephes::Matrix::transp,$safeeval,
738: '&Math::Cephes::Matrix::transp');
739: $safehole->wrap(\&Math::Cephes::Matrix::simq,$safeeval,
740: '&Math::Cephes::Matrix::simq');
741: $safehole->wrap(\&Math::Cephes::Matrix::mat_to_vec,$safeeval,
742: '&Math::Cephes::Matrix::mat_to_vec');
743: $safehole->wrap(\&Math::Cephes::Matrix::vec_to_mat,$safeeval,
744: '&Math::Cephes::Matrix::vec_to_mat');
745: $safehole->wrap(\&Math::Cephes::Matrix::check,$safeeval,
746: '&Math::Cephes::Matrix::check');
747: $safehole->wrap(\&Math::Cephes::Matrix::check,$safeeval,
748: '&Math::Cephes::Matrix::check');
749:
1.215 albertel 750: # $safehole->wrap(\&Math::Cephes::new_fract,$safeeval,'&new_fract');
751: # $safehole->wrap(\&Math::Cephes::radd,$safeeval,'&radd');
752: # $safehole->wrap(\&Math::Cephes::rsub,$safeeval,'&rsub');
753: # $safehole->wrap(\&Math::Cephes::rmul,$safeeval,'&rmul');
754: # $safehole->wrap(\&Math::Cephes::rdiv,$safeeval,'&rdiv');
755: # $safehole->wrap(\&Math::Cephes::euclid,$safeeval,'&euclid');
756:
1.91 ng 757: $safehole->wrap(\&Math::Random::random_beta,$safeeval,'&math_random_beta');
758: $safehole->wrap(\&Math::Random::random_chi_square,$safeeval,'&math_random_chi_square');
759: $safehole->wrap(\&Math::Random::random_exponential,$safeeval,'&math_random_exponential');
760: $safehole->wrap(\&Math::Random::random_f,$safeeval,'&math_random_f');
761: $safehole->wrap(\&Math::Random::random_gamma,$safeeval,'&math_random_gamma');
762: $safehole->wrap(\&Math::Random::random_multivariate_normal,$safeeval,'&math_random_multivariate_normal');
763: $safehole->wrap(\&Math::Random::random_multinomial,$safeeval,'&math_random_multinomial');
764: $safehole->wrap(\&Math::Random::random_noncentral_chi_square,$safeeval,'&math_random_noncentral_chi_square');
765: $safehole->wrap(\&Math::Random::random_noncentral_f,$safeeval,'&math_random_noncentral_f');
766: $safehole->wrap(\&Math::Random::random_normal,$safeeval,'&math_random_normal');
767: $safehole->wrap(\&Math::Random::random_permutation,$safeeval,'&math_random_permutation');
1.93 ng 768: $safehole->wrap(\&Math::Random::random_permuted_index,$safeeval,'&math_random_permuted_index');
1.91 ng 769: $safehole->wrap(\&Math::Random::random_uniform,$safeeval,'&math_random_uniform');
770: $safehole->wrap(\&Math::Random::random_poisson,$safeeval,'&math_random_poisson');
771: $safehole->wrap(\&Math::Random::random_uniform_integer,$safeeval,'&math_random_uniform_integer');
772: $safehole->wrap(\&Math::Random::random_negative_binomial,$safeeval,'&math_random_negative_binomial');
773: $safehole->wrap(\&Math::Random::random_binomial,$safeeval,'&math_random_binomial');
774: $safehole->wrap(\&Math::Random::random_seed_from_phrase,$safeeval,'&random_seed_from_phrase');
775: $safehole->wrap(\&Math::Random::random_set_seed_from_phrase,$safeeval,'&random_set_seed_from_phrase');
776: $safehole->wrap(\&Math::Random::random_get_seed,$safeeval,'&random_get_seed');
777: $safehole->wrap(\&Math::Random::random_set_seed,$safeeval,'&random_set_seed');
1.305 albertel 778: $safehole->wrap(\&Apache::lonxml::error,$safeeval,'&LONCAPA_INTERNAL_ERROR');
1.311 albertel 779: $safehole->wrap(\&Apache::lonxml::debug,$safeeval,'&LONCAPA_INTERNAL_DEBUG');
1.420 albertel 780: $safehole->wrap(\&Apache::lonnet::logthis,$safeeval,'&LONCAPA_INTERNAL_LOGTHIS');
781: $safehole->wrap(\&Apache::inputtags::finalizeawards,$safeeval,'&LONCAPA_INTERNAL_FINALIZEAWARDS');
1.322 albertel 782: $safehole->wrap(\&Apache::caparesponse::get_sigrange,$safeeval,'&LONCAPA_INTERNAL_get_sigrange');
1.430 albertel 783: # use Data::Dumper;
784: # $safehole->wrap(\&Data::Dumper::Dumper,$safeeval,'&LONCAPA_INTERNAL_Dumper');
1.82 ng 785: #need to inspect this class of ops
786: # $safeeval->deny(":base_orig");
1.331 albertel 787: $safeeval->permit("require");
1.91 ng 788: $safeinit .= ';$external::target="'.$target.'";';
1.82 ng 789: &Apache::run::run($safeinit,$safeeval);
1.373 albertel 790: &initialize_rndseed($safeeval);
791: }
1.303 albertel 792:
1.393 albertel 793: sub clean_safespace {
794: my ($safeeval) = @_;
795: delete_package_recurse($safeeval->{Root});
796: }
797:
798: sub delete_package_recurse {
799: my ($package) = @_;
800: my @subp;
801: {
802: no strict 'refs';
803: while (my ($key,$val) = each(%{*{"$package\::"}})) {
804: if (!defined($val)) { next; }
805: local (*ENTRY) = $val;
806: if (defined *ENTRY{HASH} && $key =~ /::$/ &&
807: $key ne "main::" && $key ne "<none>::")
808: {
809: my ($p) = $package ne "main" ? "$package\::" : "";
810: ($p .= $key) =~ s/::$//;
811: push(@subp,$p);
812: }
813: }
814: }
815: foreach my $p (@subp) {
816: delete_package_recurse($p);
817: }
818: Symbol::delete_package($package);
819: }
820:
1.373 albertel 821: sub initialize_rndseed {
822: my ($safeeval)=@_;
823: my $rndseed;
1.423 albertel 824: my ($symb,$courseid,$domain,$name) = &Apache::lonnet::whichuser();
1.373 albertel 825: $rndseed=&Apache::lonnet::rndseed($symb,$courseid,$domain,$name);
826: my $safeinit = '$external::randomseed="'.$rndseed.'";';
827: &Apache::lonxml::debug("Setting rndseed to $rndseed");
828: &Apache::run::run($safeinit,$safeeval);
1.207 albertel 829: }
830:
831: sub default_homework_load {
832: my ($safeeval)=@_;
833: &Apache::lonxml::debug('Loading default_homework');
834: my $default=&Apache::lonnet::getfile('/home/httpd/html/res/adm/includes/default_homework.lcpm');
1.241 albertel 835: if ($default eq -1) {
1.207 albertel 836: &Apache::lonxml::error("<b>Unable to find <i>default_homework.lcpm</i></b>");
837: } else {
838: &Apache::run::run($default,$safeeval);
839: $Apache::lonxml::default_homework_loaded=1;
840: }
1.17 albertel 841: }
842:
1.358 albertel 843: {
844: my $alarm_depth;
845: sub init_alarm {
846: alarm(0);
847: $alarm_depth=0;
848: }
849:
850: sub start_alarm {
851: if ($alarm_depth<1) {
852: my $old=alarm($Apache::lonnet::perlvar{'lonScriptTimeout'});
853: if ($old) {
854: &Apache::lonxml::error("Cancelled an alarm of $old, this shouldn't occur.");
855: }
856: }
857: $alarm_depth++;
858: }
859:
860: sub end_alarm {
861: $alarm_depth--;
862: if ($alarm_depth<1) { alarm(0); }
863: }
864: }
1.328 albertel 865: my $metamode_was;
1.55 albertel 866: sub startredirection {
1.328 albertel 867: if (!$Apache::lonxml::redirection) {
868: $metamode_was=$Apache::lonxml::metamode;
869: }
870: $Apache::lonxml::metamode=0;
871: $Apache::lonxml::redirection++;
872: push (@Apache::lonxml::outputstack, '');
1.55 albertel 873: }
874:
875: sub endredirection {
1.328 albertel 876: if (!$Apache::lonxml::redirection) {
1.380 www 877: &Apache::lonxml::error("Endredirection was called before a startredirection, perhaps you have unbalanced tags. Some debugging information:".join ":",caller);
1.328 albertel 878: return '';
879: }
880: $Apache::lonxml::redirection--;
881: if (!$Apache::lonxml::redirection) {
882: $Apache::lonxml::metamode=$metamode_was;
883: }
884: pop @Apache::lonxml::outputstack;
1.97 albertel 885: }
886:
887: sub end_tag {
888: my ($tagstack,$parstack,$token)=@_;
889: pop(@$tagstack);
890: pop(@$parstack);
891: &decreasedepth($token);
1.55 albertel 892: }
893:
1.17 albertel 894: sub initdepth {
895: @Apache::lonxml::depthcounter=();
896: $Apache::lonxml::depth=-1;
897: $Apache::lonxml::olddepth=-1;
898: }
899:
1.339 albertel 900: my @timers;
901: my $lasttime;
1.17 albertel 902: sub increasedepth {
1.19 albertel 903: my ($token) = @_;
1.17 albertel 904: $Apache::lonxml::depth++;
905: $Apache::lonxml::depthcounter[$Apache::lonxml::depth]++;
906: if ($Apache::lonxml::depthcounter[$Apache::lonxml::depth]==1) {
907: $Apache::lonxml::olddepth=$Apache::lonxml::depth;
908: }
1.340 albertel 909: my $time;
910: if ($Apache::lonxml::debug eq "1") {
911: push(@timers,[&gettimeofday()]);
912: $time=&tv_interval($lasttime);
913: $lasttime=[&gettimeofday()];
914: }
1.339 albertel 915: my $spacing=' 'x($Apache::lonxml::depth-1);
1.42 albertel 916: my $curdepth=join('_',@Apache::lonxml::depthcounter);
1.339 albertel 917: &Apache::lonxml::debug("s$spacing$Apache::lonxml::depth : $Apache::lonxml::olddepth : $curdepth : $token->[1] : $time : \n");
1.54 albertel 918: #print "<br />s $Apache::lonxml::depth : $Apache::lonxml::olddepth : $curdepth : $token->[1]\n";
1.17 albertel 919: }
920:
921: sub decreasedepth {
1.19 albertel 922: my ($token) = @_;
1.17 albertel 923: $Apache::lonxml::depth--;
1.36 albertel 924: if ($Apache::lonxml::depth<$Apache::lonxml::olddepth-1) {
925: $#Apache::lonxml::depthcounter--;
926: $Apache::lonxml::olddepth=$Apache::lonxml::depth+1;
927: }
1.43 albertel 928: if ( $Apache::lonxml::depth < -1) {
1.280 www 929: &Apache::lonxml::warning(&mt("Missing tags, unable to properly run file."));
1.43 albertel 930: $Apache::lonxml::depth='-1';
931: }
1.340 albertel 932: my ($timer,$time);
933: if ($Apache::lonxml::debug eq "1") {
934: $timer=pop(@timers);
935: $time=&tv_interval($lasttime);
936: $lasttime=[&gettimeofday()];
937: }
1.339 albertel 938: my $spacing=' 'x$Apache::lonxml::depth;
1.42 albertel 939: my $curdepth=join('_',@Apache::lonxml::depthcounter);
1.339 albertel 940: &Apache::lonxml::debug("e$spacing$Apache::lonxml::depth : $Apache::lonxml::olddepth : $curdepth : $token->[1] : $time : ".&tv_interval($timer)."\n");
1.54 albertel 941: #print "<br />e $Apache::lonxml::depth : $Apache::lonxml::olddepth : $token->[1] : $curdepth\n";
1.1 sakharuk 942: }
1.19 albertel 943:
1.399 albertel 944: sub get_id {
945: my ($parstack,$safeeval)=@_;
946: my $id= &Apache::lonxml::get_param('id',$parstack,$safeeval);
947: if ($env{'request.state'} eq 'construct' && $id =~ /(\.|_)/) {
948: &error(&mt("IDs are not allowed to contain "<tt>_</tt>" or "<tt>.</tt>""));
949: }
950: if ($id =~ /^\s*$/) { $id = $Apache::lonxml::curdepth; }
951: return $id;
952: }
953:
1.180 albertel 954: sub get_all_text_unbalanced {
1.190 albertel 955: #there is a copy of this in lonpublisher.pm
1.326 albertel 956: my($tag,$pars)= @_;
957: my $token;
958: my $result='';
959: $tag='<'.$tag.'>';
960: while ($token = $$pars[-1]->get_token) {
961: if (($token->[0] eq 'T')||($token->[0] eq 'C')||($token->[0] eq 'D')) {
1.386 albertel 962: if ($token->[0] eq 'T' && $token->[2]) {
1.382 albertel 963: $result.='<![CDATA['.$token->[1].']]>';
964: } else {
965: $result.=$token->[1];
966: }
1.326 albertel 967: } elsif ($token->[0] eq 'PI') {
968: $result.=$token->[2];
969: } elsif ($token->[0] eq 'S') {
970: $result.=$token->[4];
971: } elsif ($token->[0] eq 'E') {
972: $result.=$token->[2];
973: }
974: if ($result =~ /\Q$tag\E/is) {
975: ($result,my $redo)=$result =~ /(.*)\Q$tag\E(.*)/is;
976: #&Apache::lonxml::debug('Got a winner with leftovers ::'.$2);
977: #&Apache::lonxml::debug('Result is :'.$1);
978: $redo=$tag.$redo;
979: &Apache::lonxml::newparser($pars,\$redo);
980: last;
981: }
982: }
983: return $result
1.204 albertel 984: }
985:
986: sub increment_counter {
1.247 albertel 987: my ($increment) = @_;
1.289 sakharuk 988: if (defined($increment) && $increment gt 0) {
989: $Apache::lonxml::counter+=$increment;
990: } else {
991: $Apache::lonxml::counter++;
1.247 albertel 992: }
1.289 sakharuk 993: $Apache::lonxml::counter_changed=1;
1.204 albertel 994: }
995:
996: sub init_counter {
1.391 albertel 997: if ($env{'request.state'} eq 'construct') {
998: $Apache::lonxml::counter=1;
999: $Apache::lonxml::counter_changed=1;
1000: } elsif (defined($env{'form.counter'})) {
1.372 albertel 1001: $Apache::lonxml::counter=$env{'form.counter'};
1.247 albertel 1002: $Apache::lonxml::counter_changed=0;
1.237 sakharuk 1003: } else {
1.204 albertel 1004: $Apache::lonxml::counter=1;
1.247 albertel 1005: $Apache::lonxml::counter_changed=1;
1.204 albertel 1006: }
1007: }
1008:
1009: sub store_counter {
1010: &Apache::lonnet::appenv(('form.counter' => $Apache::lonxml::counter));
1.401 albertel 1011: $Apache::lonxml::counter_changed=0;
1.204 albertel 1012: return '';
1.180 albertel 1013: }
1014:
1.398 albertel 1015: {
1016: my $state;
1017: sub clear_problem_counter {
1018: undef($state);
1019: &Apache::lonnet::delenv('form.counter');
1020: &Apache::lonxml::init_counter();
1021: &Apache::lonxml::store_counter();
1022: }
1023:
1024: sub remember_problem_counter {
1.422 albertel 1025: &Apache::lonnet::transfer_profile_to_env(undef,undef,1);
1.398 albertel 1026: $state = $env{'form.counter'};
1027: }
1028:
1029: sub restore_problem_counter {
1030: if (defined($state)) {
1031: &Apache::lonnet::appenv(('form.counter' => $state));
1032: }
1033: }
1.401 albertel 1034: sub get_problem_counter {
1035: if ($Apache::lonxml::counter_changed) { &store_counter() }
1.422 albertel 1036: &Apache::lonnet::transfer_profile_to_env(undef,undef,1);
1.401 albertel 1037: return $env{'form.counter'};
1038: }
1.398 albertel 1039: }
1040:
1.19 albertel 1041: sub get_all_text {
1.270 albertel 1042: my($tag,$pars,$style)= @_;
1043: my $gotfullstack=1;
1044: if (ref($pars) ne 'ARRAY') {
1045: $gotfullstack=0;
1046: $pars=[$pars];
1047: }
1048: if (ref($style) ne 'HASH') {
1049: $style={};
1050: }
1051: my $depth=0;
1052: my $token;
1053: my $result='';
1054: if ( $tag =~ m:^/: ) {
1055: my $tag=substr($tag,1);
1056: #&Apache::lonxml::debug("have:$tag:");
1057: my $top_empty=0;
1058: while (($depth >=0) && ($#$pars > -1) && (!$top_empty)) {
1059: while (($depth >=0) && ($token = $$pars[-1]->get_token)) {
1060: #&Apache::lonxml::debug("e token:$token->[0]:$depth:$token->[1]:".$#$pars.":".$#Apache::lonxml::pwd);
1061: if (($token->[0] eq 'T')||($token->[0] eq 'C')||($token->[0] eq 'D')) {
1.382 albertel 1062: if ($token->[2]) {
1063: $result.='<![CDATA['.$token->[1].']]>';
1064: } else {
1065: $result.=$token->[1];
1066: }
1.270 albertel 1067: } elsif ($token->[0] eq 'PI') {
1068: $result.=$token->[2];
1069: } elsif ($token->[0] eq 'S') {
1.316 albertel 1070: if ($token->[1] =~ /^\Q$tag\E$/i) { $depth++; }
1071: if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_ON$/) { $Apache::lonxml::usestyle=1; }
1072: if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_OFF$/) { $Apache::lonxml::usestyle=0; }
1.270 albertel 1073: $result.=$token->[4];
1074: } elsif ($token->[0] eq 'E') {
1.316 albertel 1075: if ( $token->[1] =~ /^\Q$tag\E$/i) { $depth--; }
1.270 albertel 1076: #skip sending back the last end tag
1.283 albertel 1077: if ($depth == 0 && exists($$style{'/'.$token->[1]}) && $Apache::lonxml::usestyle) {
1.270 albertel 1078: my $string=
1079: '<LONCAPA_INTERNAL_TURN_STYLE_OFF end="yes" />'.
1080: $$style{'/'.$token->[1]}.
1081: $token->[2].
1082: '<LONCAPA_INTERNAL_TURN_STYLE_ON />';
1083: &Apache::lonxml::newparser($pars,\$string);
1084: #&Apache::lonxml::debug("reParsing $string");
1085: next;
1086: }
1087: if ($depth > -1) {
1088: $result.=$token->[2];
1089: } else {
1090: $$pars[-1]->unget_token($token);
1091: }
1092: }
1093: }
1094: if (($depth >=0) && ($#$pars == 0) ) { $top_empty=1; }
1095: if (($depth >=0) && ($#$pars > 0) ) {
1096: pop(@$pars);
1097: pop(@Apache::lonxml::pwd);
1098: }
1099: }
1100: if ($top_empty && $depth >= 0) {
1101: #never found the end tag ran out of text, throw error send back blank
1102: &error('Never found end tag for <'.$tag.
1103: '> current string <pre>'.
1.314 albertel 1104: &HTML::Entities::encode($result,'<>&"').
1.270 albertel 1105: '</pre>');
1106: if ($gotfullstack) {
1107: my $newstring='</'.$tag.'>'.$result;
1108: &Apache::lonxml::newparser($pars,\$newstring);
1109: }
1110: $result='';
1111: }
1112: } else {
1113: while ($#$pars > -1) {
1114: while ($token = $$pars[-1]->get_token) {
1115: #&Apache::lonxml::debug("s token:$token->[0]:$depth:$token->[1]");
1116: if (($token->[0] eq 'T')||($token->[0] eq 'C')||
1117: ($token->[0] eq 'D')) {
1.382 albertel 1118: if ($token->[2]) {
1119: $result.='<![CDATA['.$token->[1].']]>';
1120: } else {
1121: $result.=$token->[1];
1122: }
1.270 albertel 1123: } elsif ($token->[0] eq 'PI') {
1124: $result.=$token->[2];
1125: } elsif ($token->[0] eq 'S') {
1.316 albertel 1126: if ( $token->[1] =~ /^\Q$tag\E$/i) {
1.270 albertel 1127: $$pars[-1]->unget_token($token); last;
1128: } else {
1129: $result.=$token->[4];
1130: }
1.316 albertel 1131: if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_ON$/) { $Apache::lonxml::usestyle=1; }
1132: if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_OFF$/) { $Apache::lonxml::usestyle=0; }
1.270 albertel 1133: } elsif ($token->[0] eq 'E') {
1134: $result.=$token->[2];
1135: }
1136: }
1137: if (($#$pars > 0) ) {
1138: pop(@$pars);
1139: pop(@Apache::lonxml::pwd);
1140: } else { last; }
1141: }
1142: }
1143: #&Apache::lonxml::debug("Exit:$result:");
1144: return $result
1.19 albertel 1145: }
1146:
1.23 albertel 1147: sub newparser {
1148: my ($parser,$contentref,$dir) = @_;
1.167 albertel 1149: push (@$parser,HTML::LCParser->new($contentref));
1.365 albertel 1150: $$parser[-1]->xml_mode(1);
1151: $$parser[-1]->marked_sections(1);
1.23 albertel 1152: if ( $dir eq '' ) {
1153: push (@Apache::lonxml::pwd, $Apache::lonxml::pwd[$#Apache::lonxml::pwd]);
1154: } else {
1155: push (@Apache::lonxml::pwd, $dir);
1156: }
1157: }
1.1 sakharuk 1158:
1.8 albertel 1159: sub parstring {
1.417 albertel 1160: my ($token) = @_;
1161: my (@vars,@values);
1162: foreach my $attr (@{$token->[3]}) {
1163: if ($attr!~/\W/) {
1164: my $val=$token->[2]->{$attr};
1165: $val =~ s/([\%\@\\\"\'])/\\$1/g;
1166: $val =~ s/(\$[^\{a-zA-Z_])/\\$1/g;
1167: $val =~ s/(\$)$/\\$1/;
1168: #if ($val =~ m/^[\%\@]/) { $val="\\".$val; }
1169: push(@vars,"\$$attr");
1170: push(@values,"\"$val\"");
1171: }
1172: }
1173: my $var_init =
1174: (@vars) ? 'my ('.join(',',@vars).') = ('.join(',',@values).');'
1175: : '';
1176: return $var_init;
1.8 albertel 1177: }
1.22 albertel 1178:
1.384 albertel 1179: sub extlink {
1180: my ($res,$exact)=@_;
1181: if (!$exact) {
1182: $res=&Apache::lonnet::hreflocation($Apache::lonxml::pwd[-1],$res);
1183: }
1184: push(@Apache::lonxml::extlinks,$res)
1185: }
1186:
1.34 www 1187: sub writeallows {
1.126 www 1188: unless ($#extlinks>=0) { return; }
1.377 albertel 1189: my $thisurl = &Apache::lonnet::clutter(shift);
1.372 albertel 1190: if ($env{'httpref.'.$thisurl}) {
1191: $thisurl=$env{'httpref.'.$thisurl};
1.111 www 1192: }
1.34 www 1193: my $thisdir=$thisurl;
1194: $thisdir=~s/\/[^\/]+$//;
1195: my %httpref=();
1.142 albertel 1196: foreach (@extlinks) {
1.34 www 1197: $httpref{'httpref.'.
1.125 www 1198: &Apache::lonnet::hreflocation($thisdir,$_)}=$thisurl;
1.142 albertel 1199: }
1.126 www 1200: @extlinks=();
1.34 www 1201: &Apache::lonnet::appenv(%httpref);
1202: }
1203:
1.281 albertel 1204: sub register_ssi {
1205: my ($url,%form)=@_;
1206: push (@Apache::lonxml::ssi_info,{'url'=>$url,'form'=>\%form});
1207: return '';
1208: }
1209:
1210: sub do_registered_ssi {
1211: foreach my $info (@Apache::lonxml::ssi_info) {
1212: my %form=%{ $info->{'form'}};
1213: my $url=$info->{'url'};
1214: &Apache::lonnet::ssi($url,%form);
1215: }
1216: }
1.66 www 1217: #
1218: # Afterburner handles anchors, highlights and links
1219: #
1220: sub afterburn {
1221: my $result=shift;
1.154 albertel 1222: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
1223: ['highlight','anchor','link']);
1.372 albertel 1224: if ($env{'form.highlight'}) {
1225: foreach (split(/\,/,$env{'form.highlight'})) {
1.66 www 1226: my $anchorname=$_;
1227: my $matchthis=$anchorname;
1228: $matchthis=~s/\_+/\\s\+/g;
1.317 albertel 1229: $result=~s/(\Q$matchthis\E)/\<font color=\"red\"\>$1\<\/font\>/gs;
1.142 albertel 1230: }
1.66 www 1231: }
1.372 albertel 1232: if ($env{'form.link'}) {
1233: foreach (split(/\,/,$env{'form.link'})) {
1.66 www 1234: my ($anchorname,$linkurl)=split(/\>/,$_);
1235: my $matchthis=$anchorname;
1236: $matchthis=~s/\_+/\\s\+/g;
1.317 albertel 1237: $result=~s/(\Q$matchthis\E)/\<a href=\"$linkurl\"\>$1\<\/a\>/gs;
1.142 albertel 1238: }
1.66 www 1239: }
1.372 albertel 1240: if ($env{'form.anchor'}) {
1241: my $anchorname=$env{'form.anchor'};
1.66 www 1242: my $matchthis=$anchorname;
1243: $matchthis=~s/\_+/\\s\+/g;
1.317 albertel 1244: $result=~s/(\Q$matchthis\E)/\<a name=\"$anchorname\"\>$1\<\/a\>/s;
1.66 www 1245: $result.=(<<"ENDSCRIPT");
1.226 albertel 1246: <script type="text/javascript">
1.66 www 1247: document.location.hash='$anchorname';
1248: </script>
1249: ENDSCRIPT
1250: }
1251: return $result;
1252: }
1253:
1.79 www 1254: sub storefile {
1255: my ($file,$contents)=@_;
1.290 albertel 1256: &Apache::lonnet::correct_line_ends(\$contents);
1.79 www 1257: if (my $fh=Apache::File->new('>'.$file)) {
1258: print $fh $contents;
1259: $fh->close();
1.271 www 1260: return 1;
1.147 albertel 1261: } else {
1.271 www 1262: &warning("Unable to save file $file");
1263: return 0;
1.79 www 1264: }
1265: }
1266:
1.151 albertel 1267: sub createnewhtml {
1.321 www 1268: my $title=&mt('Title of document goes here');
1269: my $body=&mt('Body of document goes here');
1270: my $filecontents=(<<SIMPLECONTENT);
1.78 www 1271: <html>
1272: <head>
1.321 www 1273: <title>$title</title>
1.78 www 1274: </head>
1275: <body bgcolor="#FFFFFF">
1.321 www 1276: $body
1.78 www 1277: </body>
1278: </html>
1279: SIMPLECONTENT
1.321 www 1280: return $filecontents;
1.151 albertel 1281: }
1282:
1.274 albertel 1283: sub createnewsty {
1284: my $filecontents=(<<SIMPLECONTENT);
1285: <definetag name="">
1286: <render>
1287: <web></web>
1288: <tex></tex>
1289: </render>
1290: </definetag>
1291: SIMPLECONTENT
1292: return $filecontents;
1293: }
1294:
1.147 albertel 1295:
1.151 albertel 1296: sub inserteditinfo {
1.274 albertel 1297: my ($result,$filecontents,$filetype)=@_;
1.314 albertel 1298: $filecontents = &HTML::Entities::encode($filecontents,'<>&"');
1.147 albertel 1299: # my $editheader='<a href="#editsection">Edit below</a><hr />';
1.274 albertel 1300: my $xml_help = '';
1.321 www 1301: my $initialize='';
1.274 albertel 1302: if ($filetype eq 'html') {
1.323 www 1303: my $addbuttons=&Apache::lonhtmlcommon::htmlareaaddbuttons();
1.410 albertel 1304: $initialize=&Apache::lonhtmlcommon::spellheader();
1.347 albertel 1305: if (!&Apache::lonhtmlcommon::htmlareablocked() &&
1306: &Apache::lonhtmlcommon::htmlareabrowser()) {
1307: $initialize.=(<<FULLPAGE);
1.321 www 1308: <script type="text/javascript">
1.323 www 1309: $addbuttons
1310:
1.321 www 1311: HTMLArea.loadPlugin("FullPage");
1312:
1313: function initDocument() {
1.323 www 1314: var editor=new HTMLArea("filecont",config);
1.321 www 1315: editor.registerPlugin(FullPage);
1316: editor.generate();
1317: }
1318: </script>
1319: FULLPAGE
1.347 albertel 1320: } else {
1321: $initialize.=(<<FULLPAGE);
1322: <script type="text/javascript">
1323: $addbuttons
1324: function initDocument() {
1325: }
1326: </script>
1327: FULLPAGE
1328: }
1.321 www 1329: $result=~s/\<body([^\>]*)\>/\<body onload="initDocument()" $1\>/i;
1330: $xml_help=&Apache::loncommon::helpLatexCheatsheet();
1.274 albertel 1331: }
1332: my $cleanbut = '';
1.374 www 1333:
1.254 albertel 1334: my $titledisplay=&display_title();
1.426 banghart 1335: my %lt=&Apache::lonlocal::texthash('st' => 'Save and Edit',
1336: 'vi' => 'Save and View',
1.427 banghart 1337: 'dv' => 'Discard Edits and View',
1.428 banghart 1338: 'un' => 'undo',
1.280 www 1339: 'ed' => 'Edit');
1.161 albertel 1340: my $buttons=(<<BUTTONS);
1.274 albertel 1341: $cleanbut
1.428 banghart 1342: <input type="submit" name="discardview" accesskey="d" value="$lt{'dv'}" />
1343: <input type="submit" name="Undo" accesskey="u" value="$lt{'un'}" /><hr>
1.304 matthew 1344: <input type="submit" name="savethisfile" accesskey="s" value="$lt{'st'}" />
1345: <input type="submit" name="viewmode" accesskey="v" value="$lt{'vi'}" />
1.161 albertel 1346: BUTTONS
1.333 www 1347: $buttons.=&Apache::lonhtmlcommon::spelllink('xmledit','filecont');
1.78 www 1348: my $editfooter=(<<ENDFOOTER);
1.321 www 1349: $initialize
1.78 www 1350: <hr />
1351: <a name="editsection" />
1.333 www 1352: <form method="post" name="xmledit">
1.240 albertel 1353: $xml_help
1.280 www 1354: <input type="hidden" name="editmode" value="$lt{'ed'}" />
1.170 www 1355: $buttons<br />
1.366 albertel 1356: <textarea style="width:100%" cols="80" rows="44" name="filecont" id="filecont">$filecontents</textarea>
1.170 www 1357: <br />$buttons
1.78 www 1358: <br />
1359: </form>
1.254 albertel 1360: $titledisplay
1.321 www 1361: </body>
1.78 www 1362: ENDFOOTER
1.147 albertel 1363: # $result=~s/(\<body[^\>]*\>)/$1$editheader/is;
1.78 www 1364: $result=~s/(\<\/body\>)/$editfooter/is;
1365: return $result;
1366: }
1367:
1.152 albertel 1368: sub get_target {
1.372 albertel 1369: my $viewgrades=&Apache::lonnet::allowed('vgr',$env{'request.course.id'});
1370: if ( $env{'request.state'} eq 'published') {
1371: if ( defined($env{'form.grade_target'})
1.152 albertel 1372: && ($viewgrades == 'F' )) {
1.372 albertel 1373: return ($env{'form.grade_target'});
1374: } elsif (defined($env{'form.grade_target'})) {
1375: if (($env{'form.grade_target'} eq 'web') ||
1376: ($env{'form.grade_target'} eq 'tex') ) {
1377: return $env{'form.grade_target'}
1.153 albertel 1378: } else {
1379: return 'web';
1380: }
1.152 albertel 1381: } else {
1382: return 'web';
1383: }
1.372 albertel 1384: } elsif ($env{'request.state'} eq 'construct') {
1385: if ( defined($env{'form.grade_target'})) {
1386: return ($env{'form.grade_target'});
1.152 albertel 1387: } else {
1388: return 'web';
1389: }
1390: } else {
1391: return 'web';
1392: }
1393: }
1394:
1.24 sakharuk 1395: sub handler {
1.255 sakharuk 1396: my $request=shift;
1397:
1398: my $target=&get_target();
1399:
1.372 albertel 1400: $Apache::lonxml::debug=$env{'user.debug'};
1.255 sakharuk 1401:
1.364 albertel 1402: &Apache::loncommon::content_type($request,'text/html');
1.255 sakharuk 1403: &Apache::loncommon::no_cache($request);
1.372 albertel 1404: if ($env{'request.state'} eq 'published') {
1.363 albertel 1405: $request->set_last_modified(&Apache::lonnet::metadata($request->uri,
1406: 'lastrevisiondate'));
1407: }
1.255 sakharuk 1408: $request->send_http_header;
1409:
1410: return OK if $request->header_only;
1.68 www 1411:
1412:
1.255 sakharuk 1413: my $file=&Apache::lonnet::filelocation("",$request->uri);
1.274 albertel 1414: my $filetype;
1415: if ($file =~ /\.sty$/) {
1416: $filetype='sty';
1417: } else {
1418: $filetype='html';
1419: }
1.78 www 1420: #
1421: # Edit action? Save file.
1422: #
1.428 banghart 1423: if (!($env{'request.state'} eq 'published')) {
1424: if ($env{'form.savethisfile'} || $env{'form.viewmode'} || $env{'form.Undo'}) {
1.429 albertel 1425: my $html_file=&Apache::lonnet::getfile($file);
1426: my $error = &Apache::lonhomework::handle_save_or_undo($request, \$html_file, \$env{'form.filecont'});
1.255 sakharuk 1427: }
1428: }
1429: my %mystyle;
1430: my $result = '';
1431: my $filecontents=&Apache::lonnet::getfile($file);
1432: if ($filecontents eq -1) {
1.402 albertel 1433: my $start_page=&Apache::loncommon::start_page('File Error');
1.412 albertel 1434: my $end_page=&Apache::loncommon::end_page();
1.284 www 1435: my $fnf=&mt('File not found');
1.255 sakharuk 1436: $result=(<<ENDNOTFOUND);
1.402 albertel 1437: $start_page
1.284 www 1438: <b>$fnf: $file</b>
1.402 albertel 1439: $end_page
1.78 www 1440: ENDNOTFOUND
1.343 albertel 1441: $filecontents='';
1.372 albertel 1442: if ($env{'request.state'} ne 'published') {
1.274 albertel 1443: if ($filetype eq 'sty') {
1444: $filecontents=&createnewsty();
1445: } else {
1446: $filecontents=&createnewhtml();
1447: }
1.372 albertel 1448: $env{'form.editmode'}='Edit'; #force edit mode
1.255 sakharuk 1449: }
1450: } else {
1.372 albertel 1451: unless ($env{'request.state'} eq 'published') {
1.343 albertel 1452: if ($filecontents=~/BEGIN LON-CAPA Internal/) {
1.381 www 1453: &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 1454: }
1.264 www 1455: #
1456: # we are in construction space, see if edit mode forced
1.385 albertel 1457: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
1458: ['editmode']);
1.255 sakharuk 1459: }
1.427 banghart 1460: &Apache::lonnet::logthis("edit mode is ".$env{'form.editmode'});
1461: if (!$env{'form.editmode'} || $env{'form.viewmode'} || $env{'form.discardview'}) {
1.255 sakharuk 1462: $result = &Apache::lonxml::xmlparse($request,$target,$filecontents,
1463: '',%mystyle);
1.368 albertel 1464: undef($Apache::lonhomework::parsing_a_task);
1.385 albertel 1465: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
1466: ['rawmode']);
1.395 albertel 1467: if ($env{'form.rawmode'}) { $result = $filecontents; }
1.255 sakharuk 1468: }
1.147 albertel 1469: }
1.255 sakharuk 1470:
1.78 www 1471: #
1472: # Edit action? Insert editing commands
1473: #
1.372 albertel 1474: unless ($env{'request.state'} eq 'published') {
1.427 banghart 1475: if ($env{'form.editmode'} && (!($env{'form.viewmode'})) && (!($env{'form.discardview'})))
1476: {
1.255 sakharuk 1477: my $displayfile=$request->uri;
1478: $displayfile=~s/^\/[^\/]*//;
1.402 albertel 1479: my %options = ();
1480: if ($env{'environment.remote'} ne 'off') {
1481: $options{'bgcolor'} = '#FFFFFF';
1.349 albertel 1482: }
1.402 albertel 1483: my $start_page = &Apache::loncommon::start_page(undef,undef,
1484: \%options);
1485: $result=$start_page.
1.309 albertel 1486: &Apache::lonxml::message_location().'<h3>'.
1487: $displayfile.
1.402 albertel 1488: '</h3>'.&Apache::loncommon::end_page();
1.274 albertel 1489: $result=&inserteditinfo($result,$filecontents,$filetype);
1.255 sakharuk 1490: }
1.147 albertel 1491: }
1.402 albertel 1492: if ($filetype eq 'html') { &writeallows($request->uri); }
1.274 albertel 1493:
1.255 sakharuk 1494:
1.309 albertel 1495: &Apache::lonxml::add_messages(\$result);
1.255 sakharuk 1496: $request->print($result);
1497:
1498: return OK;
1.253 albertel 1499: }
1500:
1501: sub display_title {
1502: my $result;
1.372 albertel 1503: if ($env{'request.state'} eq 'construct') {
1.253 albertel 1504: my $title=&Apache::lonnet::gettitle();
1505: if (!defined($title) || $title eq '') {
1.372 albertel 1506: $title = $env{'request.filename'};
1.253 albertel 1507: $title = substr($title, rindex($title, '/') + 1);
1508: }
1509: $result = "<script type='text/javascript'>top.document.title = '$title - LON-CAPA Construction Space';</script>";
1510: }
1511: return $result;
1.24 sakharuk 1512: }
1.147 albertel 1513:
1.22 albertel 1514: sub debug {
1.298 albertel 1515: if ($Apache::lonxml::debug eq "1") {
1516: $|=1;
1.300 albertel 1517: my $request=$Apache::lonxml::request;
1.388 albertel 1518: if (!$request) {
1519: eval { $request=Apache->request; };
1520: }
1521: if (!$request) {
1522: eval { $request=Apache2::RequestUtil->request; };
1523: }
1.314 albertel 1524: $request->print('<font size="-2"><pre>DEBUG:'.&HTML::Entities::encode($_[0],'<>&"')."</pre></font>\n");
1.346 albertel 1525: #&Apache::lonnet::logthis($_[0]);
1.298 albertel 1526: }
1.22 albertel 1527: }
1.49 albertel 1528:
1.348 albertel 1529: sub show_error_warn_msg {
1.372 albertel 1530: if ($env{'request.filename'} eq '/home/httpd/html/res/lib/templates/simpleproblem.problem' &&
1531: &Apache::lonnet::allowed('mdc',$env{'request.course.id'})) {
1.351 albertel 1532: return 1;
1533: }
1.348 albertel 1534: return (($Apache::lonxml::debug eq 1) ||
1.372 albertel 1535: ($env{'request.state'} eq 'construct') ||
1.348 albertel 1536: ($Apache::lonhomework::browse eq 'F'
1537: &&
1.372 albertel 1538: $env{'form.show_errors'} eq 'on'));
1.348 albertel 1539: }
1540:
1.22 albertel 1541: sub error {
1.336 albertel 1542: $errorcount++;
1.348 albertel 1543: if ( &show_error_warn_msg() ) {
1.336 albertel 1544: # If printing in construction space, put the error inside <pre></pre>
1545: push(@Apache::lonxml::error_messages,
1546: $Apache::lonxml::warnings_error_header.
1547: "<b>ERROR:</b>".join("<br />\n",@_)."<br />\n");
1548: $Apache::lonxml::warnings_error_header='';
1549: } else {
1550: my $errormsg;
1551: my ($symb)=&Apache::lonnet::symbread();
1552: if ( !$symb ) {
1553: #public or browsers
1554: $errormsg=&mt("An error occured while processing this resource. The author has been notified.");
1.403 albertel 1555: }
1.413 albertel 1556: my $host=$Apache::lonnet::perlvar{'lonHostID'};
1.416 albertel 1557: my $msg = join('<br />',(@_,"The error occurred on host <tt>$host</tt>"));
1.336 albertel 1558: #notify author
1.403 albertel 1559: &Apache::lonmsg::author_res_msg($env{'request.filename'},$msg);
1.336 albertel 1560: #notify course
1.372 albertel 1561: if ( $symb && $env{'request.course.id'} ) {
1.380 www 1562: my $cnum=$env{'course.'.$env{'request.course.id'}.'.num'};
1563: my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
1.336 albertel 1564: my (undef,%users)=&Apache::lonfeedback::decide_receiver(undef,0,1,1,1);
1.372 albertel 1565: my $declutter=&Apache::lonnet::declutter($env{'request.filename'});
1.336 albertel 1566: my @userlist;
1567: foreach (keys %users) {
1568: my ($user,$domain) = split(/:/, $_);
1569: push(@userlist,"$user\@$domain");
1.380 www 1570: my $key=$declutter.'_'.$user.'_'.$domain;
1571: my %lastnotified=&Apache::lonnet::get('nohist_xmlerrornotifications',
1572: [$key],
1573: $cdom,$cnum);
1574: my $now=time;
1575: if ($now-$lastnotified{$key}>86400) {
1.430.2.1! albertel 1576: my $title = &Apache::lonnet::gettitle($symb);
! 1577: my $sentmessage;
1.380 www 1578: &Apache::lonmsg::user_normal_msg($user,$domain,
1.430.2.1! albertel 1579: "Error [$title]",$msg,'','','','',
! 1580: \$sentmessage,$symb,$title,1);
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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