Annotation of loncom/xml/lonxml.pm, revision 1.285
1.2 sakharuk 1: # The LearningOnline Network with CAPA
1.3 sakharuk 2: # XML Parser Module
1.2 sakharuk 3: #
1.285 ! www 4: # $Id: lonxml.pm,v 1.284 2003/10/04 20:49:40 www 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: #
1.3 sakharuk 39: # last modified 06/26/00 by Alexander Sakharuk
1.33 www 40: # 11/6 Gerd Kortemeyer
1.45 www 41: # 6/1/1 Gerd Kortemeyer
1.56 albertel 42: # 2/21,3/13 Guy
1.68 www 43: # 3/29,5/4 Gerd Kortemeyer
1.78 www 44: # 5/26 Gerd Kortemeyer
1.80 harris41 45: # 5/27 H. K. Ng
1.89 www 46: # 6/2,6/3,6/8,6/9 Gerd Kortemeyer
1.93 ng 47: # 6/12,6/13 H. K. Ng
1.95 www 48: # 6/16 Gerd Kortemeyer
1.104 ng 49: # 7/27 H. K. Ng
1.127 www 50: # 8/7,8/9,8/10,8/11,8/15,8/16,8/17,8/18,8/20,8/23,8/24 Gerd Kortemeyer
1.130 www 51: # Guy Albertelli
52: # 9/26 Gerd Kortemeyer
1.143 www 53: # Dec Guy Albertelli
54: # YEAR=2002
55: # 1/1 Gerd Kortemeyer
1.145 www 56: # 1/2 Matthew Hall
57: # 1/3 Gerd Kortemeyer
1.143 www 58: #
1.2 sakharuk 59:
1.4 albertel 60: package Apache::lonxml;
1.33 www 61: use vars
1.205 www 62: qw(@pwd @outputstack $redirection $import @extlinks $metamode $evaluate %insertlist @namespace $prevent_entity_encode $errorcount $warningcount);
1.1 sakharuk 63: use strict;
1.167 albertel 64: use HTML::LCParser();
1.161 albertel 65: use HTML::TreeBuilder();
66: use HTML::Entities();
67: use Safe();
68: use Safe::Hole();
69: use Math::Cephes();
70: use Math::Random();
71: use Opcode();
1.271 www 72: use POSIX qw(strftime);
1.72 albertel 73:
1.266 bowersj2 74:
1.72 albertel 75: sub register {
1.141 albertel 76: my ($space,@taglist) = @_;
77: foreach my $temptag (@taglist) {
78: push(@{ $Apache::lonxml::alltags{$temptag} },$space);
1.72 albertel 79: }
80: }
81:
1.141 albertel 82: sub deregister {
83: my ($space,@taglist) = @_;
84: foreach my $temptag (@taglist) {
85: my $tempspace = $Apache::lonxml::alltags{$temptag}[-1];
86: if ($tempspace eq $space) {
87: pop(@{ $Apache::lonxml::alltags{$temptag} });
88: }
89: }
1.142 albertel 90: #&printalltags();
1.141 albertel 91: }
92:
1.46 www 93: use Apache::Constants qw(:common);
1.161 albertel 94: use Apache::lontexconvert();
95: use Apache::style();
96: use Apache::run();
97: use Apache::londefdef();
98: use Apache::scripttag();
1.285 ! www 99: use Apache::languagetags();
1.161 albertel 100: use Apache::edit();
1.266 bowersj2 101: use Apache::inputtags();
102: use Apache::outputtags();
1.161 albertel 103: use Apache::lonnet();
104: use Apache::File();
105: use Apache::loncommon();
1.198 www 106: use Apache::lonfeedback();
1.200 www 107: use Apache::lonmsg();
1.217 matthew 108: use Apache::loncacc();
1.280 www 109: use Apache::lonlocal;
1.79 www 110:
1.72 albertel 111: #================================================== Main subroutine: xmlparse
112: #debugging control, to turn on debugging modify the correct handler
113: $Apache::lonxml::debug=0;
1.206 albertel 114:
115: # keeps count of the number of warnings and errors generated in a parse
116: $warningcount=0;
117: $errorcount=0;
1.72 albertel 118:
119: #path to the directory containing the file currently being processed
120: @pwd=();
121:
122: #these two are used for capturing a subset of the output for later processing,
123: #don't touch them directly use &startredirection and &endredirection
124: @outputstack = ();
125: $redirection = 0;
126:
127: #controls wheter the <import> tag actually does
128: $import = 1;
129: @extlinks=();
130:
131: # meta mode is a bit weird only some output is to be turned off
132: #<output> tag turns metamode off (defined in londefdef.pm)
133: $metamode = 0;
134:
135: # turns on and of run::evaluate actually derefencing var refs
136: $evaluate = 1;
1.7 albertel 137:
1.74 albertel 138: # data structure for eidt mode, determines what tags can go into what other tags
139: %insertlist=();
1.68 www 140:
1.99 albertel 141: # stores the list of active tag namespaces
1.76 albertel 142: @namespace=();
143:
1.169 albertel 144: # if 0 all high ASCII characters will be encoded into HTML Entities
145: $prevent_entity_encode=0;
146:
1.99 albertel 147: # has the dynamic menu been updated to know about this resource
148: $Apache::lonxml::registered=0;
149:
1.172 albertel 150: # a pointer the the Apache request object
151: $Apache::lonxml::request='';
152:
1.216 sakharuk 153: # a problem number counter, and check on ether it is used
1.237 sakharuk 154: $Apache::lonxml::counter=1;
1.204 albertel 155: $Apache::lonxml::counter_changed=0;
156:
1.212 albertel 157: #internal check on whether to look at style defs
158: $Apache::lonxml::usestyle=1;
1.260 albertel 159:
160: #locations used to store the parameter string for style substitutions
161: $Apache::lonxml::style_values='';
162: $Apache::lonxml::style_end_values='';
1.212 albertel 163:
1.281 albertel 164: #array of ssi calls that need to occur after we are done parsing
165: @Apache::lonxml::ssi_info=();
166:
1.282 albertel 167: #should we do the postag variable interpolation
168: $Apache::lonxml::post_evaluate=1;
169:
1.68 www 170: sub xmlbegin {
171: my $output='';
172: if ($ENV{'browser.mathml'}) {
173: $output='<?xml version="1.0"?>'
174: .'<?xml-stylesheet type="text/css" href="/adm/MathML/mathml.css"?>'
175: .'<!DOCTYPE html SYSTEM "/adm/MathML/mathml.dtd" '
176: .'[<!ENTITY mathns "http://www.w3.org/1998/Math/MathML">]>'
177: .'<html xmlns:math="http://www.w3.org/1998/Math/MathML" '
178: .'xmlns="http://www.w3.org/TR/REC-html40">';
179: } else {
180: $output='<html>';
181: }
182: return $output;
183: }
184:
185: sub xmlend {
1.278 www 186: my $mode='xml';
187: my $status='OPEN';
188: if ($Apache::lonhomework::parsing_a_problem) {
189: $mode='problem';
190: $status=$Apache::inputtags::status[-1];
191: }
1.277 www 192: return &Apache::lonfeedback::list_discussion().'</html>';
1.119 www 193: }
194:
195: sub tokeninputfield {
1.120 www 196: my $defhost=$Apache::lonnet::perlvar{'lonHostID'};
197: $defhost=~tr/a-z/A-Z/;
1.119 www 198: return (<<ENDINPUTFIELD)
1.226 albertel 199: <script type="text/javascript">
1.120 www 200: function updatetoken() {
201: var comp=new Array;
202: var barcode=unescape(document.tokeninput.barcode.value);
203: comp=barcode.split('*');
204: if (typeof(comp[0])!="undefined") {
205: document.tokeninput.codeone.value=comp[0];
206: }
207: if (typeof(comp[1])!="undefined") {
208: document.tokeninput.codetwo.value=comp[1];
209: }
210: if (typeof(comp[2])!="undefined") {
211: comp[2]=comp[2].toUpperCase();
212: document.tokeninput.codethree.value=comp[2];
213: }
214: document.tokeninput.barcode.value='';
215: }
216: </script>
217: <form method="post" name="tokeninput">
1.119 www 218: <table border="2" bgcolor="#FFFFBB">
219: <tr><th>DocID Checkin</th></tr>
220: <tr><td>
221: <table>
222: <tr>
223: <td>Scan in Barcode</td>
1.120 www 224: <td><input type="text" size="22" name="barcode"
225: onChange="updatetoken()"/></td>
1.119 www 226: </tr>
227: <tr><td><i>or</i> Type in DocID</td>
228: <td>
229: <input type="text" size="5" name="codeone" />
1.120 www 230: <b><font size="+2">*</font></b>
1.119 www 231: <input type="text" size="5" name="codetwo" />
1.120 www 232: <b><font size="+2">*</font></b>
233: <input type="text" size="10" name="codethree" value="$defhost"
234: onChange="this.value=this.value.toUpperCase()" />
1.119 www 235: </td></tr>
236: </table>
237: </td></tr>
238: <tr><td><input type="submit" value="Check in DocID" /></td></tr>
239: </table>
240: </form>
241: ENDINPUTFIELD
1.112 www 242: }
243:
1.116 www 244: sub maketoken {
1.118 www 245: my ($symb,$tuname,$tudom,$tcrsid)=@_;
1.112 www 246: unless ($symb) {
247: $symb=&Apache::lonnet::symbread();
248: }
249: unless ($tuname) {
250: $tuname=$ENV{'user.name'};
251: $tudom=$ENV{'user.domain'};
252: $tcrsid=$ENV{'request.course.id'};
253: }
1.116 www 254:
1.118 www 255: return &Apache::lonnet::checkout($symb,$tuname,$tudom,$tcrsid);
256: }
257:
258: sub printtokenheader {
1.133 albertel 259: my ($target,$token,$tsymb,$tcrsid,$tudom,$tuname)=@_;
1.116 www 260: unless ($token) { return ''; }
1.118 www 261:
1.133 albertel 262: my ($symb,$courseid,$domain,$name) = &Apache::lonxml::whichuser();
263: unless ($tsymb) {
264: $tsymb=$symb;
1.118 www 265: }
266: unless ($tuname) {
1.133 albertel 267: $tuname=$name;
268: $tudom=$domain;
269: $tcrsid=$courseid;
1.118 www 270: }
1.114 www 271:
272: my %reply=&Apache::lonnet::get('environment',
273: ['firstname','middlename','lastname','generation'],
274: $tudom,$tuname);
275: my $plainname=$reply{'firstname'}.' '.
276: $reply{'middlename'}.' '.
277: $reply{'lastname'}.' '.
278: $reply{'generation'};
279:
1.112 www 280: if ($target eq 'web') {
1.145 www 281: my %idhash=&Apache::lonnet::idrget($tudom,($tuname));
1.115 www 282: return
1.221 albertel 283: '<img align="right" src="/cgi-bin/barcode.png?encode='.$token.'" />'.
1.284 www 284: &mt('Checked out for').' '.$plainname.
285: '<br />'.&mt('User').': '.$tuname.' at '.$tudom.
286: '<br />'.&mt('ID').': '.$idhash{$tuname}.
287: '<br />'.&mt('CourseID').': '.$tcrsid.
288: '<br />'.&mt('Course').': '.$ENV{'course.'.$tcrsid.'.description'}.
289: '<br />'.&mt('DocID').': '.$token.
290: '<br />'.&mt('Time').': '.&Apache::lonlocal::locallocaltime().'<hr />';
1.112 www 291: } else {
1.121 albertel 292: return $token;
1.112 www 293: }
1.68 www 294: }
295:
1.70 www 296: sub fontsettings() {
297: my $headerstring='';
298: if (($ENV{'browser.os'} eq 'mac') && (!$ENV{'browser.mathml'})) {
1.248 albertel 299: $headerstring.=
300: '<meta Content-Type="text/html; charset=x-mac-roman">';
1.263 albertel 301: } elsif (!$ENV{'browser.mathml'} && $ENV{'browser.unicode'}) {
1.248 albertel 302: $headerstring.=
303: '<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />';
1.70 www 304: }
305: return $headerstring;
1.68 www 306: }
307:
1.48 albertel 308: sub printalltags {
309: my $temp;
310: foreach $temp (sort keys %Apache::lonxml::alltags) {
1.141 albertel 311: &Apache::lonxml::debug("$temp -- ".
312: join(',',@{ $Apache::lonxml::alltags{$temp} }));
1.48 albertel 313: }
314: }
1.31 sakharuk 315:
1.3 sakharuk 316: sub xmlparse {
1.172 albertel 317: my ($request,$target,$content_file_string,$safeinit,%style_for_target) = @_;
1.96 albertel 318:
1.172 albertel 319: &setup_globals($request,$target);
1.232 albertel 320: &Apache::inputtags::initialize_inputtags();
321: &Apache::outputtags::initialize_outputtags();
322: &Apache::edit::initialize_edit();
1.244 albertel 323:
1.178 www 324: #
325: # do we have a course style file?
326: #
327:
1.208 albertel 328: if ($ENV{'request.course.id'} && $ENV{'request.state'} ne 'construct') {
1.178 www 329: my $bodytext=
330: $ENV{'course.'.$ENV{'request.course.id'}.'.default_xml_style'};
331: if ($bodytext) {
332: my $location=&Apache::lonnet::filelocation('',$bodytext);
333: my $styletext=&Apache::lonnet::getfile($location);
334: if ($styletext ne '-1') {
335: %style_for_target = (%style_for_target,
336: &Apache::style::styleparser($target,$styletext));
337: }
338: }
339: }
1.255 sakharuk 340: #&printalltags();
1.16 albertel 341: my @pars = ();
1.23 albertel 342: my $pwd=$ENV{'request.filename'};
343: $pwd =~ s:/[^/]*$::;
344: &newparser(\@pars,\$content_file_string,$pwd);
1.24 sakharuk 345:
1.3 sakharuk 346: my $safeeval = new Safe;
1.40 albertel 347: my $safehole = new Safe::Hole;
1.82 ng 348: &init_safespace($target,$safeeval,$safehole,$safeinit);
1.3 sakharuk 349: #-------------------- Redefinition of the target in the case of compound target
350:
351: ($target, my @tenta) = split('&&',$target);
352:
1.150 albertel 353: my @stack = ();
1.3 sakharuk 354: my @parstack = ();
1.17 albertel 355: &initdepth;
1.67 www 356:
1.101 albertel 357: my $finaloutput = &inner_xmlparse($target,\@stack,\@parstack,\@pars,
358: $safeeval,\%style_for_target);
1.255 sakharuk 359:
1.125 www 360: if ($ENV{'request.uri'}) {
361: &writeallows($ENV{'request.uri'});
362: }
1.281 albertel 363: &do_registered_ssi();
1.204 albertel 364: if ($Apache::lonxml::counter_changed) { &store_counter() }
1.3 sakharuk 365: return $finaloutput;
1.106 www 366: }
367:
368: sub htmlclean {
1.107 www 369: my ($raw,$full)=@_;
1.106 www 370:
371: my $tree = HTML::TreeBuilder->new;
372: $tree->ignore_unknown(0);
1.140 albertel 373:
1.106 www 374: $tree->parse($raw);
375:
1.107 www 376: my $output= $tree->as_HTML(undef,' ');
1.140 albertel 377:
1.161 albertel 378: $output=~s/\<(br|hr|img|meta|allow)(.*?)\>/\<$1$2 \/\>/gis;
1.111 www 379: $output=~s/\<\/(br|hr|img|meta|allow)\>//gis;
1.107 www 380: unless ($full) {
381: $output=~s/\<[\/]*(body|head|html)\>//gis;
382: }
1.106 www 383:
384: $tree = $tree->delete;
385:
386: return $output;
1.15 albertel 387: }
388:
1.191 albertel 389: sub latex_special_symbols {
1.272 albertel 390: my ($string,$where)=@_;
1.235 sakharuk 391: if ($where eq 'header') {
1.272 albertel 392: $string =~ s/(\\|_|\^)/ /g;
393: $string =~ s/(\$|%|\#|&|\{|\})/\\$1/g;
1.273 sakharuk 394: $string =~ s/_/ /g;
1.229 sakharuk 395: } else {
1.272 albertel 396: $string=~s/\\ /\\char92 /g;
397: $string=~s/\^/\\char94 /g;
398: $string=~s/\~/\\char126 /g;
399: $string=~s/(&[^A-Za-z\#])/\\$1/g;
400: $string=~s/([^&])\#/$1\\#/g;
401: $string=~s/(\$|_|{|})/\\$1/g;
402: $string=~s/\\char92 /\\texttt{\\char92}/g;
403: $string=~s/(>|<)/\$$1\$/g; #more or less
404: if ($string=~m/\d%/) {$string =~ s/(\d)%/$1\\%/g;} #percent after digit
405: if ($string=~m/\s%/) {$string =~ s/(\s)%/$1\\%/g;} #percent after space
406: if ($string eq '%.') {$string = '\%.';} #percent at the end of statement
1.229 sakharuk 407: }
1.272 albertel 408: return $string;
1.188 sakharuk 409: }
410:
1.101 albertel 411: sub inner_xmlparse {
412: my ($target,$stack,$parstack,$pars,$safeeval,$style_for_target)=@_;
413: my $finaloutput = '';
414: my $result;
415: my $token;
1.258 albertel 416: my $dontpop=0;
1.101 albertel 417: while ( $#$pars > -1 ) {
418: while ($token = $$pars['-1']->get_token) {
1.261 albertel 419: if (($token->[0] eq 'T') || ($token->[0] eq 'C') ) {
1.101 albertel 420: if ($metamode<1) {
1.190 albertel 421: my $text=$token->[1];
1.193 albertel 422: if ($token->[0] eq 'C' && $target eq 'tex') {
1.239 sakharuk 423: $text = '';
424: # $text = '%'.$text."\n";
1.182 sakharuk 425: }
1.190 albertel 426: $result.=$text;
1.101 albertel 427: }
1.261 albertel 428: } elsif (($token->[0] eq 'D')) {
429: if ($metamode<1 && $target eq 'web') {
430: my $text=$token->[1];
431: $result.=$text;
432: }
1.101 albertel 433: } elsif ($token->[0] eq 'PI') {
1.261 albertel 434: if ($metamode<1 && $target eq 'web') {
1.101 albertel 435: $result=$token->[2];
436: }
437: } elsif ($token->[0] eq 'S') {
1.140 albertel 438: # add tag to stack
1.101 albertel 439: push (@$stack,$token->[1]);
440: # add parameters list to another stack
441: push (@$parstack,&parstring($token));
1.140 albertel 442: &increasedepth($token);
1.212 albertel 443: if ($Apache::lonxml::usestyle &&
444: exists($$style_for_target{$token->[1]})) {
445: $Apache::lonxml::usestyle=0;
446: my $string=$$style_for_target{$token->[1]}.
447: '<LONCAPA_INTERNAL_TURN_STYLE_ON />';
448: &Apache::lonxml::newparser($pars,\$string);
1.257 albertel 449: $Apache::lonxml::style_values=$$parstack[-1];
1.259 albertel 450: $Apache::lonxml::style_end_values=$$parstack[-1];
1.101 albertel 451: } else {
452: $result = &callsub("start_$token->[1]", $target, $token, $stack,
453: $parstack, $pars, $safeeval, $style_for_target);
1.140 albertel 454: }
1.101 albertel 455: } elsif ($token->[0] eq 'E') {
1.212 albertel 456: if ($Apache::lonxml::usestyle &&
457: exists($$style_for_target{'/'."$token->[1]"})) {
458: $Apache::lonxml::usestyle=0;
459: my $string=$$style_for_target{'/'.$token->[1]}.
1.258 albertel 460: '<LONCAPA_INTERNAL_TURN_STYLE_ON end="'.$token->[1].'" />';
1.212 albertel 461: &Apache::lonxml::newparser($pars,\$string);
1.259 albertel 462: $Apache::lonxml::style_values=$Apache::lonxml::style_end_values;
463: $Apache::lonxml::style_end_values='';
1.258 albertel 464: $dontpop=1;
1.101 albertel 465: } else {
1.258 albertel 466: #clear out any tags that didn't end
467: while ($token->[1] ne $$stack['-1'] && ($#$stack > -1)) {
468: my $lasttag=$$stack[-1];
469: if ($token->[1] =~ /^$lasttag$/i) {
470: &Apache::lonxml::warning('Using tag </'.$token->[1].'> on line '.$token->[3].' as end tag to <'.$$stack[-1].'>');
471: last;
472: } else {
473: &Apache::lonxml::warning('Found tag </'.$token->[1].'> on line '.$token->[3].' when looking for </'.$$stack[-1].'> in file');
474: &end_tag($stack,$parstack,$token);
475: }
476: }
477: $result = &callsub("end_$token->[1]", $target, $token, $stack,
478: $parstack, $pars,$safeeval, $style_for_target);
1.101 albertel 479: }
480: } else {
481: &Apache::lonxml::error("Unknown token event :$token->[0]:$token->[1]:");
482: }
483: #evaluate variable refs in result
1.282 albertel 484: if ($Apache::lonxml::post_evaluate &&$result ne "") {
1.257 albertel 485: my $extras;
486: if (!$Apache::lonxml::usestyle) {
487: $extras=$Apache::lonxml::style_values;
488: }
1.101 albertel 489: if ( $#$parstack > -1 ) {
1.257 albertel 490: $result=&Apache::run::evaluate($result,$safeeval,$extras.$$parstack[-1]);
1.101 albertel 491: } else {
1.257 albertel 492: $result= &Apache::run::evaluate($result,$safeeval,$extras);
1.101 albertel 493: }
1.163 albertel 494: }
1.282 albertel 495: $Apache::lonxml::post_evaluate=1;
496:
1.190 albertel 497: if (($token->[0] eq 'T') || ($token->[0] eq 'C') || ($token->[0] eq 'D') ) {
1.249 albertel 498: #Style file definitions should be correct
1.250 albertel 499: if ($target eq 'tex' && ($Apache::lonxml::usestyle)) {
1.272 albertel 500: $result=&latex_special_symbols($result);
1.249 albertel 501: }
1.190 albertel 502: }
503:
1.169 albertel 504: # Encode any high ASCII characters
1.279 albertel 505: # if (!$Apache::lonxml::prevent_entity_encode) {
506: # $result=&HTML::Entities::encode($result,"\200-\377");
507: # }
1.169 albertel 508: if ($Apache::lonxml::redirection) {
509: $Apache::lonxml::outputstack['-1'] .= $result;
510: } else {
511: $finaloutput.=$result;
512: }
513: $result = '';
514:
1.258 albertel 515: if ($token->[0] eq 'E' && !$dontpop) {
1.101 albertel 516: &end_tag($stack,$parstack,$token);
517: }
1.258 albertel 518: $dontpop=0;
1.224 albertel 519: }
1.212 albertel 520: if ($#$pars > -1) {
521: pop @$pars;
522: pop @Apache::lonxml::pwd;
523: }
1.101 albertel 524: }
525:
526: # if ($target eq 'meta') {
527: # $finaloutput.=&endredirection;
528: # }
529:
1.169 albertel 530:
1.101 albertel 531: if (($ENV{'QUERY_STRING'}) && ($target eq 'web')) {
532: $finaloutput=&afterburn($finaloutput);
1.216 sakharuk 533: }
1.101 albertel 534: return $finaloutput;
535: }
1.67 www 536:
1.7 albertel 537: sub callsub {
1.84 albertel 538: my ($sub,$target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.7 albertel 539: my $currentstring='';
1.72 albertel 540: my $nodefault;
1.7 albertel 541: {
1.59 albertel 542: my $sub1;
1.7 albertel 543: no strict 'refs';
1.68 www 544: my $tag=$token->[1];
1.236 www 545: # get utterly rid of extended html tags
546: if ($tag=~/^x\-/i) { return ''; }
1.141 albertel 547: my $space=$Apache::lonxml::alltags{$tag}[-1];
1.68 www 548: if (!$space) {
1.141 albertel 549: $tag=~tr/A-Z/a-z/;
1.68 www 550: $sub=~tr/A-Z/a-z/;
1.141 albertel 551: $space=$Apache::lonxml::alltags{$tag}[-1]
1.68 www 552: }
1.97 albertel 553:
554: my $deleted=0;
555: $Apache::lonxml::curdepth=join('_',@Apache::lonxml::depthcounter);
556: if (($token->[0] eq 'S') && ($target eq 'modified')) {
557: $deleted=&Apache::edit::handle_delete($space,$target,$token,$tagstack,
558: $parstack,$parser,$safeeval,
559: $style);
560: }
561: if (!$deleted) {
562: if ($space) {
1.220 albertel 563: #&Apache::lonxml::debug("Calling sub $sub in $space $metamode");
1.97 albertel 564: $sub1="$space\:\:$sub";
565: ($currentstring,$nodefault) = &$sub1($target,$token,$tagstack,
566: $parstack,$parser,$safeeval,
567: $style);
568: } else {
1.220 albertel 569: #&Apache::lonxml::debug("NOT Calling sub $sub in $space $metamode");
1.97 albertel 570: if ($metamode <1) {
571: if (defined($token->[4]) && ($metamode < 1)) {
572: $currentstring = $token->[4];
573: } else {
574: $currentstring = $token->[2];
575: }
1.62 sakharuk 576: }
1.7 albertel 577: }
1.97 albertel 578: # &Apache::lonxml::debug("nodefalt:$nodefault:");
579: if ($currentstring eq '' && $nodefault eq '') {
580: if ($target eq 'edit') {
1.220 albertel 581: #&Apache::lonxml::debug("doing default edit for $token->[1]");
1.97 albertel 582: if ($token->[0] eq 'S') {
583: $currentstring = &Apache::edit::tag_start($target,$token);
584: } elsif ($token->[0] eq 'E') {
585: $currentstring = &Apache::edit::tag_end($target,$token);
586: }
587: } elsif ($target eq 'modified') {
588: if ($token->[0] eq 'S') {
589: $currentstring = $token->[4];
590: $currentstring.=&Apache::edit::handle_insert();
1.210 www 591: } elsif ($token->[0] eq 'E') {
592: $currentstring = $token->[2];
593: $currentstring.=&Apache::edit::handle_insertafter($token->[1]);
1.97 albertel 594: } else {
595: $currentstring = $token->[2];
596: }
1.72 albertel 597: }
598: }
1.7 albertel 599: }
600: use strict 'refs';
601: }
602: return $currentstring;
1.82 ng 603: }
604:
1.96 albertel 605: sub setup_globals {
1.172 albertel 606: my ($request,$target)=@_;
607: $Apache::lonxml::request=$request;
1.99 albertel 608: $Apache::lonxml::registered = 0;
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: $Apache::lonxml::post_evaluate=1;
1.96 albertel 618: if ($target eq 'meta') {
619: $Apache::lonxml::redirection = 0;
620: $Apache::lonxml::metamode = 1;
621: $Apache::lonxml::evaluate = 1;
622: $Apache::lonxml::import = 0;
1.129 albertel 623: } elsif ($target eq 'answer') {
624: $Apache::lonxml::redirection = 0;
625: $Apache::lonxml::metamode = 1;
626: $Apache::lonxml::evaluate = 1;
627: $Apache::lonxml::import = 1;
1.96 albertel 628: } elsif ($target eq 'grade') {
629: &startredirection;
630: $Apache::lonxml::metamode = 0;
631: $Apache::lonxml::evaluate = 1;
632: $Apache::lonxml::import = 1;
633: } elsif ($target eq 'modified') {
634: $Apache::lonxml::redirection = 0;
635: $Apache::lonxml::metamode = 0;
636: $Apache::lonxml::evaluate = 0;
637: $Apache::lonxml::import = 0;
638: } elsif ($target eq 'edit') {
639: $Apache::lonxml::redirection = 0;
640: $Apache::lonxml::metamode = 0;
641: $Apache::lonxml::evaluate = 0;
642: $Apache::lonxml::import = 0;
1.163 albertel 643: } elsif ($target eq 'analyze') {
644: $Apache::lonxml::redirection = 0;
645: $Apache::lonxml::metamode = 0;
646: $Apache::lonxml::evaluate = 1;
647: $Apache::lonxml::import = 1;
1.96 albertel 648: } else {
649: $Apache::lonxml::redirection = 0;
650: $Apache::lonxml::metamode = 0;
651: $Apache::lonxml::evaluate = 1;
652: $Apache::lonxml::import = 1;
653: }
654: }
655:
1.82 ng 656: sub init_safespace {
657: my ($target,$safeeval,$safehole,$safeinit) = @_;
658: $safeeval->permit("entereval");
659: $safeeval->permit(":base_math");
660: $safeeval->permit("sort");
661: $safeeval->deny(":base_io");
1.102 albertel 662: $safehole->wrap(\&Apache::scripttag::xmlparse,$safeeval,'&xmlparse');
1.251 albertel 663: $safehole->wrap(\&Apache::outputtags::multipart,$safeeval,'&multipart');
1.82 ng 664: $safehole->wrap(\&Apache::lonnet::EXT,$safeeval,'&EXT');
665:
666: $safehole->wrap(\&Math::Cephes::asin,$safeeval,'&asin');
667: $safehole->wrap(\&Math::Cephes::acos,$safeeval,'&acos');
668: $safehole->wrap(\&Math::Cephes::atan,$safeeval,'&atan');
669: $safehole->wrap(\&Math::Cephes::sinh,$safeeval,'&sinh');
670: $safehole->wrap(\&Math::Cephes::cosh,$safeeval,'&cosh');
671: $safehole->wrap(\&Math::Cephes::tanh,$safeeval,'&tanh');
672: $safehole->wrap(\&Math::Cephes::asinh,$safeeval,'&asinh');
673: $safehole->wrap(\&Math::Cephes::acosh,$safeeval,'&acosh');
674: $safehole->wrap(\&Math::Cephes::atanh,$safeeval,'&atanh');
675: $safehole->wrap(\&Math::Cephes::erf,$safeeval,'&erf');
676: $safehole->wrap(\&Math::Cephes::erfc,$safeeval,'&erfc');
677: $safehole->wrap(\&Math::Cephes::j0,$safeeval,'&j0');
678: $safehole->wrap(\&Math::Cephes::j1,$safeeval,'&j1');
679: $safehole->wrap(\&Math::Cephes::jn,$safeeval,'&jn');
680: $safehole->wrap(\&Math::Cephes::jv,$safeeval,'&jv');
681: $safehole->wrap(\&Math::Cephes::y0,$safeeval,'&y0');
682: $safehole->wrap(\&Math::Cephes::y1,$safeeval,'&y1');
683: $safehole->wrap(\&Math::Cephes::yn,$safeeval,'&yn');
684: $safehole->wrap(\&Math::Cephes::yv,$safeeval,'&yv');
1.215 albertel 685:
686: $safehole->wrap(\&Math::Cephes::bdtr ,$safeeval,'&bdtr' );
687: $safehole->wrap(\&Math::Cephes::bdtrc ,$safeeval,'&bdtrc' );
688: $safehole->wrap(\&Math::Cephes::bdtri ,$safeeval,'&bdtri' );
689: $safehole->wrap(\&Math::Cephes::btdtr ,$safeeval,'&btdtr' );
690: $safehole->wrap(\&Math::Cephes::chdtr ,$safeeval,'&chdtr' );
691: $safehole->wrap(\&Math::Cephes::chdtrc,$safeeval,'&chdtrc');
692: $safehole->wrap(\&Math::Cephes::chdtri,$safeeval,'&chdtri');
693: $safehole->wrap(\&Math::Cephes::fdtr ,$safeeval,'&fdtr' );
694: $safehole->wrap(\&Math::Cephes::fdtrc ,$safeeval,'&fdtrc' );
695: $safehole->wrap(\&Math::Cephes::fdtri ,$safeeval,'&fdtri' );
696: $safehole->wrap(\&Math::Cephes::gdtr ,$safeeval,'&gdtr' );
697: $safehole->wrap(\&Math::Cephes::gdtrc ,$safeeval,'&gdtrc' );
698: $safehole->wrap(\&Math::Cephes::nbdtr ,$safeeval,'&nbdtr' );
699: $safehole->wrap(\&Math::Cephes::nbdtrc,$safeeval,'&nbdtrc');
700: $safehole->wrap(\&Math::Cephes::nbdtri,$safeeval,'&nbdtri');
701: $safehole->wrap(\&Math::Cephes::ndtr ,$safeeval,'&ndtr' );
702: $safehole->wrap(\&Math::Cephes::ndtri ,$safeeval,'&ndtri' );
703: $safehole->wrap(\&Math::Cephes::pdtr ,$safeeval,'&pdtr' );
704: $safehole->wrap(\&Math::Cephes::pdtrc ,$safeeval,'&pdtrc' );
705: $safehole->wrap(\&Math::Cephes::pdtri ,$safeeval,'&pdtri' );
706: $safehole->wrap(\&Math::Cephes::stdtr ,$safeeval,'&stdtr' );
707: $safehole->wrap(\&Math::Cephes::stdtri,$safeeval,'&stdtri');
708:
709: # $safehole->wrap(\&Math::Cephes::new_fract,$safeeval,'&new_fract');
710: # $safehole->wrap(\&Math::Cephes::radd,$safeeval,'&radd');
711: # $safehole->wrap(\&Math::Cephes::rsub,$safeeval,'&rsub');
712: # $safehole->wrap(\&Math::Cephes::rmul,$safeeval,'&rmul');
713: # $safehole->wrap(\&Math::Cephes::rdiv,$safeeval,'&rdiv');
714: # $safehole->wrap(\&Math::Cephes::euclid,$safeeval,'&euclid');
715:
1.91 ng 716: $safehole->wrap(\&Math::Random::random_beta,$safeeval,'&math_random_beta');
717: $safehole->wrap(\&Math::Random::random_chi_square,$safeeval,'&math_random_chi_square');
718: $safehole->wrap(\&Math::Random::random_exponential,$safeeval,'&math_random_exponential');
719: $safehole->wrap(\&Math::Random::random_f,$safeeval,'&math_random_f');
720: $safehole->wrap(\&Math::Random::random_gamma,$safeeval,'&math_random_gamma');
721: $safehole->wrap(\&Math::Random::random_multivariate_normal,$safeeval,'&math_random_multivariate_normal');
722: $safehole->wrap(\&Math::Random::random_multinomial,$safeeval,'&math_random_multinomial');
723: $safehole->wrap(\&Math::Random::random_noncentral_chi_square,$safeeval,'&math_random_noncentral_chi_square');
724: $safehole->wrap(\&Math::Random::random_noncentral_f,$safeeval,'&math_random_noncentral_f');
725: $safehole->wrap(\&Math::Random::random_normal,$safeeval,'&math_random_normal');
726: $safehole->wrap(\&Math::Random::random_permutation,$safeeval,'&math_random_permutation');
1.93 ng 727: $safehole->wrap(\&Math::Random::random_permuted_index,$safeeval,'&math_random_permuted_index');
1.91 ng 728: $safehole->wrap(\&Math::Random::random_uniform,$safeeval,'&math_random_uniform');
729: $safehole->wrap(\&Math::Random::random_poisson,$safeeval,'&math_random_poisson');
730: $safehole->wrap(\&Math::Random::random_uniform_integer,$safeeval,'&math_random_uniform_integer');
731: $safehole->wrap(\&Math::Random::random_negative_binomial,$safeeval,'&math_random_negative_binomial');
732: $safehole->wrap(\&Math::Random::random_binomial,$safeeval,'&math_random_binomial');
733: $safehole->wrap(\&Math::Random::random_seed_from_phrase,$safeeval,'&random_seed_from_phrase');
734: $safehole->wrap(\&Math::Random::random_set_seed_from_phrase,$safeeval,'&random_set_seed_from_phrase');
735: $safehole->wrap(\&Math::Random::random_get_seed,$safeeval,'&random_get_seed');
736: $safehole->wrap(\&Math::Random::random_set_seed,$safeeval,'&random_set_seed');
737:
1.82 ng 738: #need to inspect this class of ops
739: # $safeeval->deny(":base_orig");
1.91 ng 740: $safeinit .= ';$external::target="'.$target.'";';
1.121 albertel 741: my $rndseed;
1.123 albertel 742: my ($symb,$courseid,$domain,$name) = &Apache::lonxml::whichuser();
743: $rndseed=&Apache::lonnet::rndseed($symb,$courseid,$domain,$name);
1.121 albertel 744: $safeinit .= ';$external::randomseed='.$rndseed.';';
1.249 albertel 745: &Apache::lonxml::debug("Setting rndseed to $rndseed");
1.82 ng 746: &Apache::run::run($safeinit,$safeeval);
1.207 albertel 747: }
748:
749: sub default_homework_load {
750: my ($safeeval)=@_;
751: &Apache::lonxml::debug('Loading default_homework');
752: my $default=&Apache::lonnet::getfile('/home/httpd/html/res/adm/includes/default_homework.lcpm');
1.241 albertel 753: if ($default eq -1) {
1.207 albertel 754: &Apache::lonxml::error("<b>Unable to find <i>default_homework.lcpm</i></b>");
755: } else {
756: &Apache::run::run($default,$safeeval);
757: $Apache::lonxml::default_homework_loaded=1;
758: }
1.17 albertel 759: }
760:
1.55 albertel 761: sub startredirection {
762: $Apache::lonxml::redirection++;
763: push (@Apache::lonxml::outputstack, '');
764: }
765:
766: sub endredirection {
767: if (!$Apache::lonxml::redirection) {
1.72 albertel 768: &Apache::lonxml::error("Endredirection was called, before a startredirection, perhaps you have unbalanced tags. Some debuging information:".join ":",caller);
1.55 albertel 769: return '';
770: }
771: $Apache::lonxml::redirection--;
772: pop @Apache::lonxml::outputstack;
1.97 albertel 773: }
774:
775: sub end_tag {
776: my ($tagstack,$parstack,$token)=@_;
777: pop(@$tagstack);
778: pop(@$parstack);
779: &decreasedepth($token);
1.55 albertel 780: }
781:
1.17 albertel 782: sub initdepth {
783: @Apache::lonxml::depthcounter=();
784: $Apache::lonxml::depth=-1;
785: $Apache::lonxml::olddepth=-1;
786: }
787:
788: sub increasedepth {
1.19 albertel 789: my ($token) = @_;
1.17 albertel 790: $Apache::lonxml::depth++;
791: $Apache::lonxml::depthcounter[$Apache::lonxml::depth]++;
792: if ($Apache::lonxml::depthcounter[$Apache::lonxml::depth]==1) {
793: $Apache::lonxml::olddepth=$Apache::lonxml::depth;
794: }
1.42 albertel 795: my $curdepth=join('_',@Apache::lonxml::depthcounter);
1.64 albertel 796: &Apache::lonxml::debug("s $Apache::lonxml::depth : $Apache::lonxml::olddepth : $curdepth : $token->[1]\n");
1.54 albertel 797: #print "<br />s $Apache::lonxml::depth : $Apache::lonxml::olddepth : $curdepth : $token->[1]\n";
1.17 albertel 798: }
799:
800: sub decreasedepth {
1.19 albertel 801: my ($token) = @_;
1.17 albertel 802: $Apache::lonxml::depth--;
1.36 albertel 803: if ($Apache::lonxml::depth<$Apache::lonxml::olddepth-1) {
804: $#Apache::lonxml::depthcounter--;
805: $Apache::lonxml::olddepth=$Apache::lonxml::depth+1;
806: }
1.43 albertel 807: if ( $Apache::lonxml::depth < -1) {
1.280 www 808: &Apache::lonxml::warning(&mt("Missing tags, unable to properly run file."));
1.43 albertel 809: $Apache::lonxml::depth='-1';
810: }
1.42 albertel 811: my $curdepth=join('_',@Apache::lonxml::depthcounter);
1.64 albertel 812: &Apache::lonxml::debug("e $Apache::lonxml::depth : $Apache::lonxml::olddepth : $token->[1] : $curdepth\n");
1.54 albertel 813: #print "<br />e $Apache::lonxml::depth : $Apache::lonxml::olddepth : $token->[1] : $curdepth\n";
1.1 sakharuk 814: }
1.19 albertel 815:
1.180 albertel 816: sub get_all_text_unbalanced {
1.190 albertel 817: #there is a copy of this in lonpublisher.pm
1.180 albertel 818: my($tag,$pars)= @_;
819: my $token;
820: my $result='';
821: $tag='<'.$tag.'>';
822: while ($token = $$pars[-1]->get_token) {
823: if (($token->[0] eq 'T')||($token->[0] eq 'C')||($token->[0] eq 'D')) {
824: $result.=$token->[1];
825: } elsif ($token->[0] eq 'PI') {
826: $result.=$token->[2];
827: } elsif ($token->[0] eq 'S') {
828: $result.=$token->[4];
829: } elsif ($token->[0] eq 'E') {
830: $result.=$token->[2];
831: }
1.211 albertel 832: if ($result =~ /(.*)\Q$tag\E(.*)/s) {
1.180 albertel 833: &Apache::lonxml::debug('Got a winner with leftovers ::'.$2);
834: &Apache::lonxml::debug('Result is :'.$1);
835: $result=$1;
836: my $redo=$tag.$2;
837: &Apache::lonxml::newparser($pars,\$redo);
838: last;
839: }
840: }
841: return $result
1.204 albertel 842: }
843:
844: sub increment_counter {
1.247 albertel 845: my ($increment) = @_;
846: if (defined($increment) && $increment gt 0) {
847: $Apache::lonxml::counter+=$increment;
848: } else {
849: $Apache::lonxml::counter++;
850: }
1.204 albertel 851: $Apache::lonxml::counter_changed=1;
852: }
853:
854: sub init_counter {
855: if (defined($ENV{'form.counter'})) {
856: $Apache::lonxml::counter=$ENV{'form.counter'};
1.247 albertel 857: $Apache::lonxml::counter_changed=0;
1.237 sakharuk 858: } else {
1.204 albertel 859: $Apache::lonxml::counter=1;
1.247 albertel 860: $Apache::lonxml::counter_changed=1;
1.204 albertel 861: }
862: }
863:
864: sub store_counter {
865: &Apache::lonnet::appenv(('form.counter' => $Apache::lonxml::counter));
866: return '';
1.180 albertel 867: }
868:
1.19 albertel 869: sub get_all_text {
1.270 albertel 870: my($tag,$pars,$style)= @_;
871: my $gotfullstack=1;
872: if (ref($pars) ne 'ARRAY') {
873: $gotfullstack=0;
874: $pars=[$pars];
875: }
876: if (ref($style) ne 'HASH') {
877: $style={};
878: }
879: my $depth=0;
880: my $token;
881: my $result='';
882: if ( $tag =~ m:^/: ) {
883: my $tag=substr($tag,1);
884: #&Apache::lonxml::debug("have:$tag:");
885: my $top_empty=0;
886: while (($depth >=0) && ($#$pars > -1) && (!$top_empty)) {
887: while (($depth >=0) && ($token = $$pars[-1]->get_token)) {
888: #&Apache::lonxml::debug("e token:$token->[0]:$depth:$token->[1]:".$#$pars.":".$#Apache::lonxml::pwd);
889: if (($token->[0] eq 'T')||($token->[0] eq 'C')||($token->[0] eq 'D')) {
890: $result.=$token->[1];
891: } elsif ($token->[0] eq 'PI') {
892: $result.=$token->[2];
893: } elsif ($token->[0] eq 'S') {
894: if ($token->[1] =~ /^$tag$/i) { $depth++; }
895: if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_ON$/i) { $Apache::lonxml::usestyle=1; }
896: if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_OFF$/i) { $Apache::lonxml::usestyle=0; }
897: $result.=$token->[4];
898: } elsif ($token->[0] eq 'E') {
899: if ( $token->[1] =~ /^$tag$/i) { $depth--; }
900: #skip sending back the last end tag
1.283 albertel 901: if ($depth == 0 && exists($$style{'/'.$token->[1]}) && $Apache::lonxml::usestyle) {
1.270 albertel 902: my $string=
903: '<LONCAPA_INTERNAL_TURN_STYLE_OFF end="yes" />'.
904: $$style{'/'.$token->[1]}.
905: $token->[2].
906: '<LONCAPA_INTERNAL_TURN_STYLE_ON />';
907: &Apache::lonxml::newparser($pars,\$string);
908: #&Apache::lonxml::debug("reParsing $string");
909: next;
910: }
911: if ($depth > -1) {
912: $result.=$token->[2];
913: } else {
914: $$pars[-1]->unget_token($token);
915: }
916: }
917: }
918: if (($depth >=0) && ($#$pars == 0) ) { $top_empty=1; }
919: if (($depth >=0) && ($#$pars > 0) ) {
920: pop(@$pars);
921: pop(@Apache::lonxml::pwd);
922: }
923: }
924: if ($top_empty && $depth >= 0) {
925: #never found the end tag ran out of text, throw error send back blank
926: &error('Never found end tag for <'.$tag.
927: '> current string <pre>'.
928: &HTML::Entities::encode($result).
929: '</pre>');
930: if ($gotfullstack) {
931: my $newstring='</'.$tag.'>'.$result;
932: &Apache::lonxml::newparser($pars,\$newstring);
933: }
934: $result='';
935: }
936: } else {
937: while ($#$pars > -1) {
938: while ($token = $$pars[-1]->get_token) {
939: #&Apache::lonxml::debug("s token:$token->[0]:$depth:$token->[1]");
940: if (($token->[0] eq 'T')||($token->[0] eq 'C')||
941: ($token->[0] eq 'D')) {
942: $result.=$token->[1];
943: } elsif ($token->[0] eq 'PI') {
944: $result.=$token->[2];
945: } elsif ($token->[0] eq 'S') {
946: if ( $token->[1] =~ /^$tag$/i) {
947: $$pars[-1]->unget_token($token); last;
948: } else {
949: $result.=$token->[4];
950: }
951: if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_ON$/i) { $Apache::lonxml::usestyle=1; }
952: if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_OFF$/i) { $Apache::lonxml::usestyle=0; }
953: } elsif ($token->[0] eq 'E') {
954: $result.=$token->[2];
955: }
956: }
957: if (($#$pars > 0) ) {
958: pop(@$pars);
959: pop(@Apache::lonxml::pwd);
960: } else { last; }
961: }
962: }
963: #&Apache::lonxml::debug("Exit:$result:");
964: return $result
1.19 albertel 965: }
966:
1.23 albertel 967: sub newparser {
968: my ($parser,$contentref,$dir) = @_;
1.167 albertel 969: push (@$parser,HTML::LCParser->new($contentref));
1.56 albertel 970: $$parser['-1']->xml_mode('1');
1.23 albertel 971: if ( $dir eq '' ) {
972: push (@Apache::lonxml::pwd, $Apache::lonxml::pwd[$#Apache::lonxml::pwd]);
973: } else {
974: push (@Apache::lonxml::pwd, $dir);
975: }
976: }
1.1 sakharuk 977:
1.8 albertel 978: sub parstring {
979: my ($token) = @_;
980: my $temp='';
1.142 albertel 981: foreach (@{$token->[3]}) {
1.35 www 982: unless ($_=~/\W/) {
1.42 albertel 983: my $val=$token->[2]->{$_};
1.231 albertel 984: $val =~ s/([\%\@\\\"\'])/\\$1/g;
1.51 albertel 985: #if ($val =~ m/^[\%\@]/) { $val="\\".$val; }
1.267 sakharuk 986: $temp .= "my \$$_=\"$val\";";
1.20 albertel 987: }
1.142 albertel 988: }
1.8 albertel 989: return $temp;
990: }
1.22 albertel 991:
1.34 www 992: sub writeallows {
1.126 www 993: unless ($#extlinks>=0) { return; }
1.34 www 994: my $thisurl='/res/'.&Apache::lonnet::declutter(shift);
1.111 www 995: if ($ENV{'httpref.'.$thisurl}) {
996: $thisurl=$ENV{'httpref.'.$thisurl};
997: }
1.34 www 998: my $thisdir=$thisurl;
999: $thisdir=~s/\/[^\/]+$//;
1000: my %httpref=();
1.142 albertel 1001: foreach (@extlinks) {
1.34 www 1002: $httpref{'httpref.'.
1.125 www 1003: &Apache::lonnet::hreflocation($thisdir,$_)}=$thisurl;
1.142 albertel 1004: }
1.126 www 1005: @extlinks=();
1.34 www 1006: &Apache::lonnet::appenv(%httpref);
1007: }
1008:
1.281 albertel 1009: sub register_ssi {
1010: my ($url,%form)=@_;
1011: push (@Apache::lonxml::ssi_info,{'url'=>$url,'form'=>\%form});
1012: return '';
1013: }
1014:
1015: sub do_registered_ssi {
1016: foreach my $info (@Apache::lonxml::ssi_info) {
1017: my %form=%{ $info->{'form'}};
1018: my $url=$info->{'url'};
1019: &Apache::lonnet::ssi($url,%form);
1020: }
1021: }
1.66 www 1022: #
1023: # Afterburner handles anchors, highlights and links
1024: #
1025: sub afterburn {
1026: my $result=shift;
1.154 albertel 1027: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
1028: ['highlight','anchor','link']);
1.66 www 1029: if ($ENV{'form.highlight'}) {
1.142 albertel 1030: foreach (split(/\,/,$ENV{'form.highlight'})) {
1.66 www 1031: my $anchorname=$_;
1032: my $matchthis=$anchorname;
1033: $matchthis=~s/\_+/\\s\+/g;
1034: $result=~s/($matchthis)/\<font color=\"red\"\>$1\<\/font\>/gs;
1.142 albertel 1035: }
1.66 www 1036: }
1037: if ($ENV{'form.link'}) {
1.142 albertel 1038: foreach (split(/\,/,$ENV{'form.link'})) {
1.66 www 1039: my ($anchorname,$linkurl)=split(/\>/,$_);
1040: my $matchthis=$anchorname;
1041: $matchthis=~s/\_+/\\s\+/g;
1042: $result=~s/($matchthis)/\<a href=\"$linkurl\"\>$1\<\/a\>/gs;
1.142 albertel 1043: }
1.66 www 1044: }
1045: if ($ENV{'form.anchor'}) {
1046: my $anchorname=$ENV{'form.anchor'};
1047: my $matchthis=$anchorname;
1048: $matchthis=~s/\_+/\\s\+/g;
1049: $result=~s/($matchthis)/\<a name=\"$anchorname\"\>$1\<\/a\>/s;
1050: $result.=(<<"ENDSCRIPT");
1.226 albertel 1051: <script type="text/javascript">
1.66 www 1052: document.location.hash='$anchorname';
1053: </script>
1054: ENDSCRIPT
1055: }
1056: return $result;
1057: }
1058:
1.79 www 1059: sub storefile {
1060: my ($file,$contents)=@_;
1061: if (my $fh=Apache::File->new('>'.$file)) {
1062: print $fh $contents;
1063: $fh->close();
1.271 www 1064: return 1;
1.147 albertel 1065: } else {
1.271 www 1066: &warning("Unable to save file $file");
1067: return 0;
1.79 www 1068: }
1069: }
1070:
1.151 albertel 1071: sub createnewhtml {
1072: my $filecontents=(<<SIMPLECONTENT);
1.78 www 1073: <html>
1074: <head>
1075: <title>
1076: Title of Document Goes Here
1077: </title>
1078: </head>
1079: <body bgcolor="#FFFFFF">
1080:
1081: Body of Document Goes Here
1082:
1083: </body>
1084: </html>
1085: SIMPLECONTENT
1.151 albertel 1086: return $filecontents;
1087: }
1088:
1.274 albertel 1089: sub createnewsty {
1090: my $filecontents=(<<SIMPLECONTENT);
1091: <definetag name="">
1092: <render>
1093: <web></web>
1094: <tex></tex>
1095: </render>
1096: </definetag>
1097: SIMPLECONTENT
1098: return $filecontents;
1099: }
1100:
1.147 albertel 1101:
1.151 albertel 1102: sub inserteditinfo {
1.274 albertel 1103: my ($result,$filecontents,$filetype)=@_;
1.157 albertel 1104: $filecontents = &HTML::Entities::encode($filecontents);
1.147 albertel 1105: # my $editheader='<a href="#editsection">Edit below</a><hr />';
1.274 albertel 1106: my $xml_help = '';
1107: if ($filetype eq 'html') {
1108: $xml_help=Apache::loncommon::helpLatexCheatsheet();
1109: }
1110: my $cleanbut = '';
1111: if ($filetype eq 'html') {
1.280 www 1112: $cleanbut='<input type="submit" name="attemptclean" value="'.
1113: &mt('Save and then attempt to clean HTML').'" />';
1.274 albertel 1114: }
1.254 albertel 1115: my $titledisplay=&display_title();
1.280 www 1116: my %lt=&Apache::lonlocal::texthash('st' => 'Save this',
1117: 'vi' => 'View',
1118: 'ed' => 'Edit');
1.161 albertel 1119: my $buttons=(<<BUTTONS);
1.274 albertel 1120: $cleanbut
1.280 www 1121: <input type="submit" name="savethisfile" value="$lt{'st'}" />
1122: <input type="submit" name="viewmode" value="$lt{'vi'}" />
1.161 albertel 1123: BUTTONS
1.78 www 1124: my $editfooter=(<<ENDFOOTER);
1125: <hr />
1126: <a name="editsection" />
1127: <form method="post">
1.240 albertel 1128: $xml_help
1.280 www 1129: <input type="hidden" name="editmode" value="$lt{'ed'}" />
1.170 www 1130: $buttons<br />
1.78 www 1131: <textarea cols="80" rows="40" name="filecont">$filecontents</textarea>
1.170 www 1132: <br />$buttons
1.78 www 1133: <br />
1134: </form>
1.254 albertel 1135: $titledisplay
1.78 www 1136: ENDFOOTER
1.147 albertel 1137: # $result=~s/(\<body[^\>]*\>)/$1$editheader/is;
1.78 www 1138: $result=~s/(\<\/body\>)/$editfooter/is;
1139: return $result;
1140: }
1141:
1.152 albertel 1142: sub get_target {
1143: my $viewgrades=&Apache::lonnet::allowed('vgr',$ENV{'request.course.id'});
1144: if ( $ENV{'request.state'} eq 'published') {
1145: if ( defined($ENV{'form.grade_target'})
1146: && ($viewgrades == 'F' )) {
1147: return ($ENV{'form.grade_target'});
1.153 albertel 1148: } elsif (defined($ENV{'form.grade_target'})) {
1149: if (($ENV{'form.grade_target'} eq 'web') ||
1150: ($ENV{'form.grade_target'} eq 'tex') ) {
1151: return $ENV{'form.grade_target'}
1152: } else {
1153: return 'web';
1154: }
1.152 albertel 1155: } else {
1156: return 'web';
1157: }
1158: } elsif ($ENV{'request.state'} eq 'construct') {
1159: if ( defined($ENV{'form.grade_target'})) {
1160: return ($ENV{'form.grade_target'});
1161: } else {
1162: return 'web';
1163: }
1164: } else {
1165: return 'web';
1166: }
1167: }
1168:
1.24 sakharuk 1169: sub handler {
1.255 sakharuk 1170: my $request=shift;
1171:
1172: my $target=&get_target();
1173:
1.258 albertel 1174: $Apache::lonxml::debug=$ENV{'user.debug'};
1.255 sakharuk 1175:
1176: if ($ENV{'browser.mathml'}) {
1.280 www 1177: &Apache::loncommon::content_type($request,'text/xml');
1.255 sakharuk 1178: } else {
1.280 www 1179: &Apache::loncommon::content_type($request,'text/html');
1.255 sakharuk 1180: }
1181: &Apache::loncommon::no_cache($request);
1182: $request->send_http_header;
1183:
1184: return OK if $request->header_only;
1.68 www 1185:
1186:
1.255 sakharuk 1187: my $file=&Apache::lonnet::filelocation("",$request->uri);
1.274 albertel 1188: my $filetype;
1189: if ($file =~ /\.sty$/) {
1190: $filetype='sty';
1191: } else {
1192: $filetype='html';
1193: }
1.78 www 1194: #
1195: # Edit action? Save file.
1196: #
1.255 sakharuk 1197: unless ($ENV{'request.state'} eq 'published') {
1198: if (($ENV{'form.savethisfile'}) || ($ENV{'form.attemptclean'})) {
1.271 www 1199: if (&storefile($file,$ENV{'form.filecont'})) {
1.284 www 1200: $request->print("<font COLOR=\"#0000FF\">".&mt('Updated').": ".
1201: &Apache::lonlocal::locallocaltime(time)." </font>");
1.271 www 1202: }
1.255 sakharuk 1203: }
1204: }
1205: my %mystyle;
1206: my $result = '';
1207: my $filecontents=&Apache::lonnet::getfile($file);
1208: if ($filecontents eq -1) {
1.284 www 1209: my $bodytag=&Apache::loncommon::bodytag('File Error');
1210: my $fnf=&mt('File not found');
1.255 sakharuk 1211: $result=(<<ENDNOTFOUND);
1.78 www 1212: <html>
1213: <head>
1.284 www 1214: <title>$fnf</title>
1.78 www 1215: </head>
1.284 www 1216: $bodytag
1217: <b>$fnf: $file</b>
1.78 www 1218: </body>
1219: </html>
1220: ENDNOTFOUND
1.50 albertel 1221: $filecontents='';
1.255 sakharuk 1222: if ($ENV{'request.state'} ne 'published') {
1.274 albertel 1223: if ($filetype eq 'sty') {
1224: $filecontents=&createnewsty();
1225: } else {
1226: $filecontents=&createnewhtml();
1227: }
1.255 sakharuk 1228: $ENV{'form.editmode'}='Edit'; #force edit mode
1229: }
1230: } else {
1231: unless ($ENV{'request.state'} eq 'published') {
1232: if ($ENV{'form.attemptclean'}) {
1233: $filecontents=&htmlclean($filecontents,1);
1234: }
1.264 www 1235: #
1236: # we are in construction space, see if edit mode forced
1237: &Apache::loncommon::get_unprocessed_cgi
1238: ($ENV{'QUERY_STRING'},['editmode']);
1.255 sakharuk 1239: }
1240: if (!$ENV{'form.editmode'} || $ENV{'form.viewmode'}) {
1241: $result = &Apache::lonxml::xmlparse($request,$target,$filecontents,
1242: '',%mystyle);
1243: }
1.147 albertel 1244: }
1.255 sakharuk 1245:
1.78 www 1246: #
1247: # Edit action? Insert editing commands
1248: #
1.255 sakharuk 1249: unless ($ENV{'request.state'} eq 'published') {
1250: if ($ENV{'form.editmode'} && (!($ENV{'form.viewmode'}))) {
1251: my $displayfile=$request->uri;
1252: $displayfile=~s/^\/[^\/]*//;
1253: $result='<html><body bgcolor="#FFFFFF"><h3>'.$displayfile.
1254: '</h3></body></html>';
1.274 albertel 1255: $result=&inserteditinfo($result,$filecontents,$filetype);
1.255 sakharuk 1256: }
1.147 albertel 1257: }
1.274 albertel 1258: if ($filetype eq 'html') { writeallows($request->uri); }
1259:
1.255 sakharuk 1260:
1261:
1262: $request->print($result);
1263:
1264: return OK;
1.253 albertel 1265: }
1266:
1267: sub display_title {
1268: my $result;
1269: if ($ENV{'request.state'} eq 'construct') {
1270: my $title=&Apache::lonnet::gettitle();
1271: if (!defined($title) || $title eq '') {
1272: $title = $ENV{'request.filename'};
1273: $title = substr($title, rindex($title, '/') + 1);
1274: }
1275: $result = "<script type='text/javascript'>top.document.title = '$title - LON-CAPA Construction Space';</script>";
1276: }
1277: return $result;
1.24 sakharuk 1278: }
1.147 albertel 1279:
1.22 albertel 1280: sub debug {
1281: if ($Apache::lonxml::debug eq 1) {
1.146 albertel 1282: $|=1;
1.202 albertel 1283: print('<font size="-2"<pre>DEBUG:'.&HTML::Entities::encode($_[0])."</pre></font>\n");
1.22 albertel 1284: }
1285: }
1.49 albertel 1286:
1.22 albertel 1287: sub error {
1.205 www 1288: $errorcount++;
1.74 albertel 1289: if (($Apache::lonxml::debug eq 1) || ($ENV{'request.state'} eq 'construct') ) {
1.166 matthew 1290: # If printing in construction space, put the error inside <pre></pre>
1.167 albertel 1291: print "<b>ERROR:</b>".join("\n",@_)."\n";
1.52 albertel 1292: } else {
1293: print "<b>An Error occured while processing this resource. The instructor has been notified.</b> <br />";
1294: #notify author
1.146 albertel 1295: &Apache::lonmsg::author_res_msg($ENV{'request.filename'},join('<br />',@_));
1.52 albertel 1296: #notify course
1297: if ( $ENV{'request.course.id'} ) {
1.209 www 1298: my (undef,%users)=&Apache::lonfeedback::decide_receiver(undef,0,1,1,1);
1.143 www 1299: my $declutter=&Apache::lonnet::declutter($ENV{'request.filename'});
1.209 www 1300: foreach (keys %users) {
1301: my ($user,$domain) = split(/:/, $_);
1.143 www 1302: &Apache::lonmsg::user_normal_msg($user,$domain,
1.146 albertel 1303: "Error [$declutter]",join('<br />',@_));
1.52 albertel 1304: }
1305: }
1.74 albertel 1306:
1.52 albertel 1307: #FIXME probably shouldn't have me get everything forever.
1.146 albertel 1308: &Apache::lonmsg::user_normal_msg('albertel','msu',"Error in $ENV{'request.filename'}",join('<br />',@_));
1.74 albertel 1309: #&Apache::lonmsg::user_normal_msg('albertel','103',"Error in $ENV{'request.filename'}",$_[0]);
1.52 albertel 1310: }
1.22 albertel 1311: }
1.49 albertel 1312:
1.22 albertel 1313: sub warning {
1.205 www 1314: $warningcount++;
1.261 albertel 1315:
1316: if ($ENV{'form.grade_target'} ne 'tex') {
1317: if ($ENV{'request.state'} eq 'construct' || $Apache::lonxml::debug) {
1318: print "<b>W</b>ARNING<b>:</b>".join('<br />',@_)."<br />\n";
1319: }
1.73 harris41 1320: }
1.83 albertel 1321: }
1322:
1323: sub get_param {
1.213 albertel 1324: my ($param,$parstack,$safeeval,$context,$case_insensitive) = @_;
1325: if ( ! $context ) { $context = -1; }
1326: my $args ='';
1327: if ( $#$parstack > (-2-$context) ) { $args=$$parstack[$context]; }
1328: if ( ! $args ) { return undef; }
1329: if ( $case_insensitive ) {
1330: if ($args =~ s/(my \$)(\Q$param\E)(=\")/$1.lc($2).$3/ei) {
1331: return &Apache::run::run("{$args;".'return $'.$param.'}',
1332: $safeeval); #'
1333: } else {
1334: return undef;
1335: }
1336: } else {
1337: if ( $args =~ /my \$\Q$param\E=\"/ ) {
1338: return &Apache::run::run("{$args;".'return $'.$param.'}',
1339: $safeeval); #'
1340: } else {
1341: return undef;
1342: }
1343: }
1.22 albertel 1344: }
1345:
1.132 albertel 1346: sub get_param_var {
1.213 albertel 1347: my ($param,$parstack,$safeeval,$context,$case_insensitive) = @_;
1.132 albertel 1348: if ( ! $context ) { $context = -1; }
1349: my $args ='';
1350: if ( $#$parstack > (-2-$context) ) { $args=$$parstack[$context]; }
1.230 albertel 1351: &Apache::lonxml::debug("Args are $args param is $param");
1.213 albertel 1352: if ($case_insensitive) {
1353: if (! ($args=~s/(my \$)(\Q$param\E)(=\")/$1.lc($2).$3/ei)) {
1354: return undef;
1355: }
1356: } elsif ( $args !~ /my \$\Q$param\E=\"/ ) { return undef; }
1.132 albertel 1357: my $value=&Apache::run::run("{$args;".'return $'.$param.'}',$safeeval); #'
1.230 albertel 1358: &Apache::lonxml::debug("first run is $value");
1359: if ($value =~ /^[\$\@\%]\w+$/) {
1360: &Apache::lonxml::debug("doing second");
1361: my @result=&Apache::run::run("return $value",$safeeval,1);
1362: if (!defined($result[0])) {
1363: return $value
1364: } else {
1365: if (wantarray) { return @result; } else { return $result[0]; }
1366: }
1.132 albertel 1367: } else {
1368: return $value;
1369: }
1370: }
1371:
1.74 albertel 1372: sub register_insert {
1.75 albertel 1373: my @data = split /\n/, &Apache::lonnet::getfile('/home/httpd/lonTabs/insertlist.tab');
1.74 albertel 1374: my $i;
1.76 albertel 1375: my $tagnum=0;
1.74 albertel 1376: my @order;
1377: for ($i=0;$i < $#data; $i++) {
1378: my $line = $data[$i];
1379: if ( $line =~ /^\#/ || $line =~ /^\s*\n/) { next; }
1380: if ( $line =~ /TABLE/ ) { last; }
1.268 bowersj2 1381: my ($tag,$descrip,$color,$function,$show,$helpfile,$helpdesc) = split(/,/, $line);
1.135 albertel 1382: if ($tag) {
1383: $insertlist{"$tagnum.tag"} = $tag;
1384: $insertlist{"$tagnum.description"} = $descrip;
1385: $insertlist{"$tagnum.color"} = $color;
1386: $insertlist{"$tagnum.function"} = $function;
1387: if (!defined($show)) { $show='yes'; }
1388: $insertlist{"$tagnum.show"}= $show;
1.268 bowersj2 1389: $insertlist{"$tagnum.helpfile"} = $helpfile;
1390: $insertlist{"$tagnum.helpdesc"} = $helpdesc;
1.135 albertel 1391: $insertlist{"$tag.num"}=$tagnum;
1392: $tagnum++;
1393: }
1.74 albertel 1394: }
1.76 albertel 1395: $i++; #skipping TABLE line
1396: $tagnum = 0;
1.74 albertel 1397: for (;$i < $#data;$i++) {
1398: my $line = $data[$i];
1.76 albertel 1399: my ($mnemonic,@which) = split(/ +/,$line);
1400: my $tag = $insertlist{"$tagnum.tag"};
1.144 matthew 1401: for (my $j=0;$j <=$#which;$j++) {
1.74 albertel 1402: if ( $which[$j] eq 'Y' ) {
1.76 albertel 1403: if ($insertlist{"$j.show"} ne 'no') {
1404: push(@{ $insertlist{"$tag.which"} },$j);
1405: }
1.74 albertel 1406: }
1407: }
1.76 albertel 1408: $tagnum++;
1.74 albertel 1409: }
1410: }
1.98 albertel 1411:
1412: sub description {
1413: my ($token)=@_;
1.138 albertel 1414: my $tagnum;
1415: my $tag=$token->[1];
1416: foreach my $namespace (reverse @Apache::lonxml::namespace) {
1417: my $testtag=$namespace.'::'.$tag;
1418: $tagnum=$insertlist{"$testtag.num"};
1419: if (defined($tagnum)) { last; }
1420: }
1421: if (!defined ($tagnum)) { $tagnum=$Apache::lonxml::insertlist{"$tag.num"}; }
1422: return $insertlist{$tagnum.'.description'};
1.268 bowersj2 1423: }
1424:
1425: # Returns a list containing the help file, and the description
1426: sub helpinfo {
1427: my ($token)=@_;
1428: my $tagnum;
1429: my $tag=$token->[1];
1430: foreach my $namespace (reverse @Apache::lonxml::namespace) {
1431: my $testtag=$namespace.'::'.$tag;
1432: $tagnum=$insertlist{"$testtag.num"};
1433: if (defined($tagnum)) { last; }
1434: }
1435: if (!defined ($tagnum)) { $tagnum=$Apache::lonxml::insertlist{"$tag.num"}; }
1436: return ($insertlist{$tagnum.'.helpfile'}, $insertlist{$tagnum.'.helpdesc'});
1.98 albertel 1437: }
1.123 albertel 1438:
1439: # ----------------------------------------------------------------- whichuser
1440: # returns a list of $symb, $courseid, $domain, $name that is correct for
1441: # calls to lonnet functions for this setup.
1442: # - looks for form.grade_ parameters
1443: sub whichuser {
1.262 matthew 1444: my ($passedsymb)=@_;
1.245 albertel 1445: my ($symb,$courseid,$domain,$name,$publicuser);
1.123 albertel 1446: if (defined($ENV{'form.grade_symb'})) {
1447: my $tmp_courseid=$ENV{'form.grade_courseid'};
1.269 albertel 1448: my $allowed=&Apache::lonnet::allowed('vgr',$tmp_courseid);
1.123 albertel 1449: if ($allowed) {
1450: $symb=$ENV{'form.grade_symb'};
1451: $courseid=$ENV{'form.grade_courseid'};
1452: $domain=$ENV{'form.grade_domain'};
1453: $name=$ENV{'form.grade_username'};
1454: }
1.134 albertel 1455: } else {
1.262 matthew 1456: if (!$passedsymb) {
1457: $symb=&Apache::lonnet::symbread();
1458: } else {
1459: $symb=$passedsymb;
1460: }
1.244 albertel 1461: $courseid=$ENV{'request.course.id'};
1462: $domain=$ENV{'user.domain'};
1463: $name=$ENV{'user.name'};
1464: if ($name eq 'public' && $domain eq 'public') {
1465: if (!defined($ENV{'form.username'})) {
1466: $ENV{'form.username'}.=time.rand(10000000);
1467: }
1468: $name.=$ENV{'form.username'};
1469: }
1.123 albertel 1470: }
1.245 albertel 1471: return ($symb,$courseid,$domain,$name,$publicuser);
1.123 albertel 1472: }
1473:
1.1 sakharuk 1474: 1;
1475: __END__
1.68 www 1476:
1477:
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