Annotation of loncom/xml/lonxml.pm, revision 1.252
1.2 sakharuk 1: # The LearningOnline Network with CAPA
1.3 sakharuk 2: # XML Parser Module
1.2 sakharuk 3: #
1.252 ! bowersj2 4: # $Id: lonxml.pm,v 1.251 2003/05/03 21:09:03 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: #
1.3 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 $warningcount);
1.1 sakharuk 63: use strict;
1.167 albertel 64: use HTML::LCParser();
1.161 albertel 65: use HTML::TreeBuilder();
66: use HTML::Entities();
67: use Safe();
68: use Safe::Hole();
69: use Math::Cephes();
70: use Math::Random();
71: use Opcode();
1.72 albertel 72:
73: sub register {
1.141 albertel 74: my ($space,@taglist) = @_;
75: foreach my $temptag (@taglist) {
76: push(@{ $Apache::lonxml::alltags{$temptag} },$space);
1.72 albertel 77: }
78: }
79:
1.141 albertel 80: sub deregister {
81: my ($space,@taglist) = @_;
82: foreach my $temptag (@taglist) {
83: my $tempspace = $Apache::lonxml::alltags{$temptag}[-1];
84: if ($tempspace eq $space) {
85: pop(@{ $Apache::lonxml::alltags{$temptag} });
86: }
87: }
1.142 albertel 88: #&printalltags();
1.141 albertel 89: }
90:
1.46 www 91: use Apache::Constants qw(:common);
1.161 albertel 92: use Apache::lontexconvert();
93: use Apache::style();
94: use Apache::run();
95: use Apache::londefdef();
96: use Apache::scripttag();
97: use Apache::edit();
98: use Apache::lonnet();
99: use Apache::File();
100: use Apache::loncommon();
1.198 www 101: use Apache::lonfeedback();
1.200 www 102: use Apache::lonmsg();
1.217 matthew 103: use Apache::loncacc();
1.79 www 104:
1.72 albertel 105: #================================================== Main subroutine: xmlparse
106: #debugging control, to turn on debugging modify the correct handler
107: $Apache::lonxml::debug=0;
1.206 albertel 108:
109: # keeps count of the number of warnings and errors generated in a parse
110: $warningcount=0;
111: $errorcount=0;
1.72 albertel 112:
113: #path to the directory containing the file currently being processed
114: @pwd=();
115:
116: #these two are used for capturing a subset of the output for later processing,
117: #don't touch them directly use &startredirection and &endredirection
118: @outputstack = ();
119: $redirection = 0;
120:
121: #controls wheter the <import> tag actually does
122: $import = 1;
123: @extlinks=();
124:
125: # meta mode is a bit weird only some output is to be turned off
126: #<output> tag turns metamode off (defined in londefdef.pm)
127: $metamode = 0;
128:
129: # turns on and of run::evaluate actually derefencing var refs
130: $evaluate = 1;
1.7 albertel 131:
1.74 albertel 132: # data structure for eidt mode, determines what tags can go into what other tags
133: %insertlist=();
1.68 www 134:
1.99 albertel 135: # stores the list of active tag namespaces
1.76 albertel 136: @namespace=();
137:
1.169 albertel 138: # if 0 all high ASCII characters will be encoded into HTML Entities
139: $prevent_entity_encode=0;
140:
1.99 albertel 141: # has the dynamic menu been updated to know about this resource
142: $Apache::lonxml::registered=0;
143:
1.172 albertel 144: # a pointer the the Apache request object
145: $Apache::lonxml::request='';
146:
1.216 sakharuk 147: # a problem number counter, and check on ether it is used
1.237 sakharuk 148: $Apache::lonxml::counter=1;
1.204 albertel 149: $Apache::lonxml::counter_changed=0;
150:
1.212 albertel 151: #internal check on whether to look at style defs
152: $Apache::lonxml::usestyle=1;
153:
1.68 www 154: sub xmlbegin {
155: my $output='';
156: if ($ENV{'browser.mathml'}) {
157: $output='<?xml version="1.0"?>'
158: .'<?xml-stylesheet type="text/css" href="/adm/MathML/mathml.css"?>'
159: .'<!DOCTYPE html SYSTEM "/adm/MathML/mathml.dtd" '
160: .'[<!ENTITY mathns "http://www.w3.org/1998/Math/MathML">]>'
161: .'<html xmlns:math="http://www.w3.org/1998/Math/MathML" '
162: .'xmlns="http://www.w3.org/TR/REC-html40">';
163: } else {
164: $output='<html>';
165: }
166: return $output;
167: }
168:
169: sub xmlend {
1.194 www 170: my ($discussiononly,$symb)=@_;
1.103 www 171: my $discussion='';
172: if ($ENV{'request.course.id'}) {
1.109 www 173: my $crs='/'.$ENV{'request.course.id'};
174: if ($ENV{'request.course.sec'}) {
175: $crs.='_'.$ENV{'request.course.sec'};
176: }
177: $crs=~s/\_/\//g;
178: my $seeid=&Apache::lonnet::allowed('rin',$crs);
1.194 www 179: unless ($symb) {
180: $symb=&Apache::lonnet::symbread();
181: }
1.103 www 182: if ($symb) {
183: my %contrib=&Apache::lonnet::restore($symb,$ENV{'request.course.id'},
184: $ENV{'course.'.$ENV{'request.course.id'}.'.domain'},
185: $ENV{'course.'.$ENV{'request.course.id'}.'.num'});
186: if ($contrib{'version'}) {
1.194 www 187: unless ($discussiononly) {
188: $discussion.=
189: '<address><hr />';
190: }
1.103 www 191: my $idx;
192: for ($idx=1;$idx<=$contrib{'version'};$idx++) {
1.110 www 193: my $hidden=($contrib{'hidden'}=~/\.$idx\./);
1.222 www 194: my $deleted=($contrib{'deleted'}=~/\.$idx\./);
195: unless ((($hidden) && (!$seeid)) || ($deleted)) {
1.110 www 196: my $message=$contrib{$idx.':message'};
197: $message=~s/\n/\<br \/\>/g;
1.186 www 198: $message=&Apache::lontexconvert::msgtexconverted($message);
1.243 www 199: if ($contrib{$idx.':attachmenturl'}) {
200: my ($fname,$ft)
201: =($contrib{$idx.':attachmenturl'}=~/\/(\w+)\.(\w+)$/);
202: $message.='<p>Attachment: <a href="'.
203: &Apache::lonnet::tokenwrapper($contrib{$idx.':attachmenturl'}).
204: '"><tt>'.$fname.'.'.$ft.'</tt></a>';
205: }
1.110 www 206: if ($message) {
207: if ($hidden) {
208: $message='<font color="#888888">'.$message.'</font>';
209: }
1.196 www 210: my $screenname=&Apache::loncommon::screenname(
211: $contrib{$idx.':sendername'},
212: $contrib{$idx.':senderdomain'});
213: my $plainname=&Apache::loncommon::nickname(
214: $contrib{$idx.':sendername'},
215: $contrib{$idx.':senderdomain'});
216:
1.109 www 217: my $sender='Anonymous';
218: if ((!$contrib{$idx.':anonymous'}) || ($seeid)) {
1.194 www 219: $sender=&Apache::loncommon::aboutmewrapper(
1.196 www 220: $plainname,
1.194 www 221: $contrib{$idx.':sendername'},
222: $contrib{$idx.':senderdomain'}).' ('.
1.164 www 223: $contrib{$idx.':sendername'}.' at '.
224: $contrib{$idx.':senderdomain'}.')';
1.109 www 225: if ($contrib{$idx.':anonymous'}) {
1.164 www 226: $sender.=' [anonymous] '.
1.196 www 227: $screenname;
1.110 www 228: }
229: if ($seeid) {
230: if ($hidden) {
231: $sender.=' <a href="/adm/feedback?unhide='.
232: $symb.':::'.$idx.'">Make Visible</a>';
233: } else {
234: $sender.=' <a href="/adm/feedback?hide='.
235: $symb.':::'.$idx.'">Hide</a>';
1.222 www 236: }
237: $sender.=' <a href="/adm/feedback?deldisc='.
238: $symb.':::'.$idx.'">Delete</a>';
239: }
1.164 www 240: } else {
1.196 www 241: if ($screenname) {
242: $sender='<i>'.$screenname.'</i>';
1.164 www 243: }
1.109 www 244: }
245: $discussion.='<p><b>'.$sender.'</b> ('.
1.103 www 246: localtime($contrib{$idx.':timestamp'}).
247: '):<blockquote>'.$message.
1.110 www 248: '</blockquote></p>';
249: }
250: }
1.103 www 251: }
1.194 www 252: unless ($discussiononly) {
253: $discussion.='</address>';
254: }
255: }
256: if ($discussiononly) {
1.195 www 257: $discussion.=(<<ENDDISCUSS);
1.243 www 258: <form action="/adm/feedback" method="post" name="mailform" enctype="multipart/form-data">
1.195 www 259: <input type="submit" name="discuss" value="Post Discussion" />
260: <input type="submit" name="anondiscuss" value="Post Anonymous Discussion" />
261: <input type="hidden" name="symb" value="$symb" />
262: <input type="hidden" name="sendit" value="true" />
263: <br />
264: <font size="1">Note: in anonymous discussion, your name is visible only to
265: course faculty</font><br />
266: <textarea name=comment cols=60 rows=10 wrap=hard></textarea>
1.242 www 267: <p>
268: Attachment (128 KB max size): <input type="file" name="attachment" />
269: </p>
1.195 www 270: </form>
271: ENDDISCUSS
1.198 www 272: $discussion.=&Apache::lonfeedback::generate_preview_button();
1.103 www 273: }
274: }
275: }
1.194 www 276: return $discussion.($discussiononly?'':'</html>');
1.119 www 277: }
278:
279: sub tokeninputfield {
1.120 www 280: my $defhost=$Apache::lonnet::perlvar{'lonHostID'};
281: $defhost=~tr/a-z/A-Z/;
1.119 www 282: return (<<ENDINPUTFIELD)
1.226 albertel 283: <script type="text/javascript">
1.120 www 284: function updatetoken() {
285: var comp=new Array;
286: var barcode=unescape(document.tokeninput.barcode.value);
287: comp=barcode.split('*');
288: if (typeof(comp[0])!="undefined") {
289: document.tokeninput.codeone.value=comp[0];
290: }
291: if (typeof(comp[1])!="undefined") {
292: document.tokeninput.codetwo.value=comp[1];
293: }
294: if (typeof(comp[2])!="undefined") {
295: comp[2]=comp[2].toUpperCase();
296: document.tokeninput.codethree.value=comp[2];
297: }
298: document.tokeninput.barcode.value='';
299: }
300: </script>
301: <form method="post" name="tokeninput">
1.119 www 302: <table border="2" bgcolor="#FFFFBB">
303: <tr><th>DocID Checkin</th></tr>
304: <tr><td>
305: <table>
306: <tr>
307: <td>Scan in Barcode</td>
1.120 www 308: <td><input type="text" size="22" name="barcode"
309: onChange="updatetoken()"/></td>
1.119 www 310: </tr>
311: <tr><td><i>or</i> Type in DocID</td>
312: <td>
313: <input type="text" size="5" name="codeone" />
1.120 www 314: <b><font size="+2">*</font></b>
1.119 www 315: <input type="text" size="5" name="codetwo" />
1.120 www 316: <b><font size="+2">*</font></b>
317: <input type="text" size="10" name="codethree" value="$defhost"
318: onChange="this.value=this.value.toUpperCase()" />
1.119 www 319: </td></tr>
320: </table>
321: </td></tr>
322: <tr><td><input type="submit" value="Check in DocID" /></td></tr>
323: </table>
324: </form>
325: ENDINPUTFIELD
1.112 www 326: }
327:
1.116 www 328: sub maketoken {
1.118 www 329: my ($symb,$tuname,$tudom,$tcrsid)=@_;
1.112 www 330: unless ($symb) {
331: $symb=&Apache::lonnet::symbread();
332: }
333: unless ($tuname) {
334: $tuname=$ENV{'user.name'};
335: $tudom=$ENV{'user.domain'};
336: $tcrsid=$ENV{'request.course.id'};
337: }
1.116 www 338:
1.118 www 339: return &Apache::lonnet::checkout($symb,$tuname,$tudom,$tcrsid);
340: }
341:
342: sub printtokenheader {
1.133 albertel 343: my ($target,$token,$tsymb,$tcrsid,$tudom,$tuname)=@_;
1.116 www 344: unless ($token) { return ''; }
1.118 www 345:
1.133 albertel 346: my ($symb,$courseid,$domain,$name) = &Apache::lonxml::whichuser();
347: unless ($tsymb) {
348: $tsymb=$symb;
1.118 www 349: }
350: unless ($tuname) {
1.133 albertel 351: $tuname=$name;
352: $tudom=$domain;
353: $tcrsid=$courseid;
1.118 www 354: }
1.114 www 355:
356: my %reply=&Apache::lonnet::get('environment',
357: ['firstname','middlename','lastname','generation'],
358: $tudom,$tuname);
359: my $plainname=$reply{'firstname'}.' '.
360: $reply{'middlename'}.' '.
361: $reply{'lastname'}.' '.
362: $reply{'generation'};
363:
1.112 www 364: if ($target eq 'web') {
1.145 www 365: my %idhash=&Apache::lonnet::idrget($tudom,($tuname));
1.115 www 366: return
1.221 albertel 367: '<img align="right" src="/cgi-bin/barcode.png?encode='.$token.'" />'.
1.115 www 368: 'Checked out for '.$plainname.
1.114 www 369: '<br />User: '.$tuname.' at '.$tudom.
1.145 www 370: '<br />ID: '.$idhash{$tuname}.
1.117 www 371: '<br />CourseID: '.$tcrsid.
1.145 www 372: '<br />Course: '.$ENV{'course.'.$tcrsid.'.description'}.
1.114 www 373: '<br />DocID: '.$token.
1.116 www 374: '<br />Time: '.localtime().'<hr />';
1.112 www 375: } else {
1.121 albertel 376: return $token;
1.112 www 377: }
1.68 www 378: }
379:
1.70 www 380: sub fontsettings() {
381: my $headerstring='';
382: if (($ENV{'browser.os'} eq 'mac') && (!$ENV{'browser.mathml'})) {
1.248 albertel 383: $headerstring.=
384: '<meta Content-Type="text/html; charset=x-mac-roman">';
385: } elsif (!$ENV{'browser.mathml'}) {
386: $headerstring.=
387: '<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />';
1.70 www 388: }
389: return $headerstring;
1.68 www 390: }
391:
1.48 albertel 392: sub printalltags {
393: my $temp;
394: foreach $temp (sort keys %Apache::lonxml::alltags) {
1.141 albertel 395: &Apache::lonxml::debug("$temp -- ".
396: join(',',@{ $Apache::lonxml::alltags{$temp} }));
1.48 albertel 397: }
398: }
1.31 sakharuk 399:
1.3 sakharuk 400: sub xmlparse {
1.172 albertel 401: my ($request,$target,$content_file_string,$safeinit,%style_for_target) = @_;
1.96 albertel 402:
1.172 albertel 403: &setup_globals($request,$target);
1.232 albertel 404: &Apache::inputtags::initialize_inputtags();
405: &Apache::outputtags::initialize_outputtags();
406: &Apache::edit::initialize_edit();
1.244 albertel 407:
1.178 www 408: #
409: # do we have a course style file?
410: #
411:
1.208 albertel 412: if ($ENV{'request.course.id'} && $ENV{'request.state'} ne 'construct') {
1.178 www 413: my $bodytext=
414: $ENV{'course.'.$ENV{'request.course.id'}.'.default_xml_style'};
415: if ($bodytext) {
416: my $location=&Apache::lonnet::filelocation('',$bodytext);
417: my $styletext=&Apache::lonnet::getfile($location);
418: if ($styletext ne '-1') {
419: %style_for_target = (%style_for_target,
420: &Apache::style::styleparser($target,$styletext));
421: }
422: }
423: }
424:
1.48 albertel 425: #&printalltags();
1.16 albertel 426: my @pars = ();
1.23 albertel 427: my $pwd=$ENV{'request.filename'};
428: $pwd =~ s:/[^/]*$::;
429: &newparser(\@pars,\$content_file_string,$pwd);
1.24 sakharuk 430:
1.3 sakharuk 431: my $safeeval = new Safe;
1.40 albertel 432: my $safehole = new Safe::Hole;
1.82 ng 433: &init_safespace($target,$safeeval,$safehole,$safeinit);
1.3 sakharuk 434: #-------------------- Redefinition of the target in the case of compound target
435:
436: ($target, my @tenta) = split('&&',$target);
437:
1.150 albertel 438: my @stack = ();
1.3 sakharuk 439: my @parstack = ();
1.17 albertel 440: &initdepth;
1.67 www 441:
1.101 albertel 442: my $finaloutput = &inner_xmlparse($target,\@stack,\@parstack,\@pars,
443: $safeeval,\%style_for_target);
1.125 www 444: if ($ENV{'request.uri'}) {
445: &writeallows($ENV{'request.uri'});
446: }
1.204 albertel 447: if ($Apache::lonxml::counter_changed) { &store_counter() }
1.3 sakharuk 448: return $finaloutput;
1.106 www 449: }
450:
451: sub htmlclean {
1.107 www 452: my ($raw,$full)=@_;
1.106 www 453:
454: my $tree = HTML::TreeBuilder->new;
455: $tree->ignore_unknown(0);
1.140 albertel 456:
1.106 www 457: $tree->parse($raw);
458:
1.107 www 459: my $output= $tree->as_HTML(undef,' ');
1.140 albertel 460:
1.161 albertel 461: $output=~s/\<(br|hr|img|meta|allow)(.*?)\>/\<$1$2 \/\>/gis;
1.111 www 462: $output=~s/\<\/(br|hr|img|meta|allow)\>//gis;
1.107 www 463: unless ($full) {
464: $output=~s/\<[\/]*(body|head|html)\>//gis;
465: }
1.106 www 466:
467: $tree = $tree->delete;
468:
469: return $output;
1.15 albertel 470: }
471:
1.191 albertel 472: sub latex_special_symbols {
1.229 sakharuk 473: my ($current_token,$stack,$parstack,$where)=@_;
1.235 sakharuk 474: if ($where eq 'header') {
1.238 albertel 475: $current_token =~ s/(\\|_|\^)/ /g;
476: $current_token =~ s/(\$|%|\#|&|\{|\})/\\$1/g;
1.229 sakharuk 477: } else {
1.238 albertel 478: $current_token=~s/\\ /\\char92 /g;
479: $current_token=~s/\^/\\char94 /g;
480: $current_token=~s/\~/\\char126 /g;
1.246 albertel 481: $current_token=~s/(&[^A-Za-z\#])/\\$1/g;
1.238 albertel 482: $current_token=~s/([^&])\#/$1\\#/g;
483: $current_token=~s/(\$|_|{|})/\\$1/g;
484: $current_token=~s/\\char92 /\\texttt{\\char92}/g;
485: $current_token=~s/(>|<)/\$$1\$/g; #more or less
486: if ($current_token=~m/\d%/) {$current_token =~ s/(\d)%/$1\\%/g;} #percent after digit
487: if ($current_token=~m/\s%/) {$current_token =~ s/(\s)%/$1\\%/g;} #persent after space
1.229 sakharuk 488: }
1.188 sakharuk 489: return $current_token;
490: }
491:
1.101 albertel 492: sub inner_xmlparse {
493: my ($target,$stack,$parstack,$pars,$safeeval,$style_for_target)=@_;
494: my $finaloutput = '';
495: my $result;
496: my $token;
497: while ( $#$pars > -1 ) {
498: while ($token = $$pars['-1']->get_token) {
499: if (($token->[0] eq 'T') || ($token->[0] eq 'C') || ($token->[0] eq 'D') ) {
500: if ($metamode<1) {
1.190 albertel 501: my $text=$token->[1];
1.193 albertel 502: if ($token->[0] eq 'C' && $target eq 'tex') {
1.239 sakharuk 503: $text = '';
504: # $text = '%'.$text."\n";
1.182 sakharuk 505: }
1.190 albertel 506: $result.=$text;
1.101 albertel 507: }
508: } elsif ($token->[0] eq 'PI') {
509: if ($metamode<1) {
510: $result=$token->[2];
511: }
512: } elsif ($token->[0] eq 'S') {
1.140 albertel 513: # add tag to stack
1.101 albertel 514: push (@$stack,$token->[1]);
515: # add parameters list to another stack
516: push (@$parstack,&parstring($token));
1.140 albertel 517: &increasedepth($token);
1.212 albertel 518: if ($Apache::lonxml::usestyle &&
519: exists($$style_for_target{$token->[1]})) {
520: $Apache::lonxml::usestyle=0;
521: my $string=$$style_for_target{$token->[1]}.
522: '<LONCAPA_INTERNAL_TURN_STYLE_ON />';
523: &Apache::lonxml::newparser($pars,\$string);
1.101 albertel 524: } else {
525: $result = &callsub("start_$token->[1]", $target, $token, $stack,
526: $parstack, $pars, $safeeval, $style_for_target);
1.140 albertel 527: }
1.101 albertel 528: } elsif ($token->[0] eq 'E') {
529: #clear out any tags that didn't end
530: while ($token->[1] ne $$stack['-1'] && ($#$stack > -1)) {
1.150 albertel 531: my $lasttag=$$stack[-1];
532: if ($token->[1] =~ /^$lasttag$/i) {
1.244 albertel 533: &Apache::lonxml::warning('Using tag </'.$token->[1].'> on line '.$token->[3].' as end tag to <'.$$stack[-1].'>');
1.150 albertel 534: last;
535: } else {
1.244 albertel 536: &Apache::lonxml::warning('Found tag </'.$token->[1].'> on line '.$token->[3].' when looking for </'.$$stack[-1].'> in file');
1.150 albertel 537: &end_tag($stack,$parstack,$token);
538: }
1.101 albertel 539: }
1.140 albertel 540:
1.212 albertel 541: if ($Apache::lonxml::usestyle &&
542: exists($$style_for_target{'/'."$token->[1]"})) {
543: $Apache::lonxml::usestyle=0;
544: my $string=$$style_for_target{'/'.$token->[1]}.
545: '<LONCAPA_INTERNAL_TURN_STYLE_ON />';
546: &Apache::lonxml::newparser($pars,\$string);
1.101 albertel 547: } else {
548: $result = &callsub("end_$token->[1]", $target, $token, $stack,
549: $parstack, $pars,$safeeval, $style_for_target);
550: }
551: } else {
552: &Apache::lonxml::error("Unknown token event :$token->[0]:$token->[1]:");
553: }
554: #evaluate variable refs in result
555: if ($result ne "") {
556: if ( $#$parstack > -1 ) {
1.169 albertel 557: $result=&Apache::run::evaluate($result,$safeeval,$$parstack[-1]);
1.101 albertel 558: } else {
1.169 albertel 559: $result= &Apache::run::evaluate($result,$safeeval,'');
1.101 albertel 560: }
1.163 albertel 561: }
1.190 albertel 562: if (($token->[0] eq 'T') || ($token->[0] eq 'C') || ($token->[0] eq 'D') ) {
1.249 albertel 563: #Style file definitions should be correct
1.250 albertel 564: if ($target eq 'tex' && ($Apache::lonxml::usestyle)) {
1.249 albertel 565: $result=&latex_special_symbols($result,$stack,$parstack);
566: }
1.190 albertel 567: }
568:
1.169 albertel 569: # Encode any high ASCII characters
570: if (!$Apache::lonxml::prevent_entity_encode) {
571: $result=&HTML::Entities::encode($result,"\200-\377");
572: }
573: if ($Apache::lonxml::redirection) {
574: $Apache::lonxml::outputstack['-1'] .= $result;
575: } else {
576: $finaloutput.=$result;
577: }
578: $result = '';
579:
1.101 albertel 580: if ($token->[0] eq 'E') {
581: &end_tag($stack,$parstack,$token);
582: }
1.224 albertel 583: }
1.212 albertel 584: if ($#$pars > -1) {
585: pop @$pars;
586: pop @Apache::lonxml::pwd;
587: }
1.101 albertel 588: }
589:
590: # if ($target eq 'meta') {
591: # $finaloutput.=&endredirection;
592: # }
593:
1.169 albertel 594:
1.101 albertel 595: if (($ENV{'QUERY_STRING'}) && ($target eq 'web')) {
596: $finaloutput=&afterburn($finaloutput);
1.216 sakharuk 597: }
1.101 albertel 598: return $finaloutput;
599: }
1.67 www 600:
1.7 albertel 601: sub callsub {
1.84 albertel 602: my ($sub,$target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.7 albertel 603: my $currentstring='';
1.72 albertel 604: my $nodefault;
1.7 albertel 605: {
1.59 albertel 606: my $sub1;
1.7 albertel 607: no strict 'refs';
1.68 www 608: my $tag=$token->[1];
1.236 www 609: # get utterly rid of extended html tags
610: if ($tag=~/^x\-/i) { return ''; }
1.141 albertel 611: my $space=$Apache::lonxml::alltags{$tag}[-1];
1.68 www 612: if (!$space) {
1.141 albertel 613: $tag=~tr/A-Z/a-z/;
1.68 www 614: $sub=~tr/A-Z/a-z/;
1.141 albertel 615: $space=$Apache::lonxml::alltags{$tag}[-1]
1.68 www 616: }
1.97 albertel 617:
618: my $deleted=0;
619: $Apache::lonxml::curdepth=join('_',@Apache::lonxml::depthcounter);
620: if (($token->[0] eq 'S') && ($target eq 'modified')) {
621: $deleted=&Apache::edit::handle_delete($space,$target,$token,$tagstack,
622: $parstack,$parser,$safeeval,
623: $style);
624: }
625: if (!$deleted) {
626: if ($space) {
1.220 albertel 627: #&Apache::lonxml::debug("Calling sub $sub in $space $metamode");
1.97 albertel 628: $sub1="$space\:\:$sub";
629: ($currentstring,$nodefault) = &$sub1($target,$token,$tagstack,
630: $parstack,$parser,$safeeval,
631: $style);
632: } else {
1.220 albertel 633: #&Apache::lonxml::debug("NOT Calling sub $sub in $space $metamode");
1.97 albertel 634: if ($metamode <1) {
635: if (defined($token->[4]) && ($metamode < 1)) {
636: $currentstring = $token->[4];
637: } else {
638: $currentstring = $token->[2];
639: }
1.62 sakharuk 640: }
1.7 albertel 641: }
1.97 albertel 642: # &Apache::lonxml::debug("nodefalt:$nodefault:");
643: if ($currentstring eq '' && $nodefault eq '') {
644: if ($target eq 'edit') {
1.220 albertel 645: #&Apache::lonxml::debug("doing default edit for $token->[1]");
1.97 albertel 646: if ($token->[0] eq 'S') {
647: $currentstring = &Apache::edit::tag_start($target,$token);
648: } elsif ($token->[0] eq 'E') {
649: $currentstring = &Apache::edit::tag_end($target,$token);
650: }
651: } elsif ($target eq 'modified') {
652: if ($token->[0] eq 'S') {
653: $currentstring = $token->[4];
654: $currentstring.=&Apache::edit::handle_insert();
1.210 www 655: } elsif ($token->[0] eq 'E') {
656: $currentstring = $token->[2];
657: $currentstring.=&Apache::edit::handle_insertafter($token->[1]);
1.97 albertel 658: } else {
659: $currentstring = $token->[2];
660: }
1.72 albertel 661: }
662: }
1.7 albertel 663: }
664: use strict 'refs';
665: }
666: return $currentstring;
1.82 ng 667: }
668:
1.96 albertel 669: sub setup_globals {
1.172 albertel 670: my ($request,$target)=@_;
671: $Apache::lonxml::request=$request;
1.99 albertel 672: $Apache::lonxml::registered = 0;
1.205 www 673: $errorcount=0;
674: $warningcount=0;
1.207 albertel 675: $Apache::lonxml::default_homework_loaded=0;
1.212 albertel 676: $Apache::lonxml::usestyle=1;
1.204 albertel 677: &init_counter();
1.101 albertel 678: @Apache::lonxml::pwd=();
1.124 albertel 679: @Apache::lonxml::extlinks=();
1.96 albertel 680: if ($target eq 'meta') {
681: $Apache::lonxml::redirection = 0;
682: $Apache::lonxml::metamode = 1;
683: $Apache::lonxml::evaluate = 1;
684: $Apache::lonxml::import = 0;
1.129 albertel 685: } elsif ($target eq 'answer') {
686: $Apache::lonxml::redirection = 0;
687: $Apache::lonxml::metamode = 1;
688: $Apache::lonxml::evaluate = 1;
689: $Apache::lonxml::import = 1;
1.96 albertel 690: } elsif ($target eq 'grade') {
691: &startredirection;
692: $Apache::lonxml::metamode = 0;
693: $Apache::lonxml::evaluate = 1;
694: $Apache::lonxml::import = 1;
695: } elsif ($target eq 'modified') {
696: $Apache::lonxml::redirection = 0;
697: $Apache::lonxml::metamode = 0;
698: $Apache::lonxml::evaluate = 0;
699: $Apache::lonxml::import = 0;
700: } elsif ($target eq 'edit') {
701: $Apache::lonxml::redirection = 0;
702: $Apache::lonxml::metamode = 0;
703: $Apache::lonxml::evaluate = 0;
704: $Apache::lonxml::import = 0;
1.163 albertel 705: } elsif ($target eq 'analyze') {
706: $Apache::lonxml::redirection = 0;
707: $Apache::lonxml::metamode = 0;
708: $Apache::lonxml::evaluate = 1;
709: $Apache::lonxml::import = 1;
1.96 albertel 710: } else {
711: $Apache::lonxml::redirection = 0;
712: $Apache::lonxml::metamode = 0;
713: $Apache::lonxml::evaluate = 1;
714: $Apache::lonxml::import = 1;
715: }
716: }
717:
1.82 ng 718: sub init_safespace {
719: my ($target,$safeeval,$safehole,$safeinit) = @_;
720: $safeeval->permit("entereval");
721: $safeeval->permit(":base_math");
722: $safeeval->permit("sort");
723: $safeeval->deny(":base_io");
1.102 albertel 724: $safehole->wrap(\&Apache::scripttag::xmlparse,$safeeval,'&xmlparse');
1.251 albertel 725: $safehole->wrap(\&Apache::outputtags::multipart,$safeeval,'&multipart');
1.82 ng 726: $safehole->wrap(\&Apache::lonnet::EXT,$safeeval,'&EXT');
727:
728: $safehole->wrap(\&Math::Cephes::asin,$safeeval,'&asin');
729: $safehole->wrap(\&Math::Cephes::acos,$safeeval,'&acos');
730: $safehole->wrap(\&Math::Cephes::atan,$safeeval,'&atan');
731: $safehole->wrap(\&Math::Cephes::sinh,$safeeval,'&sinh');
732: $safehole->wrap(\&Math::Cephes::cosh,$safeeval,'&cosh');
733: $safehole->wrap(\&Math::Cephes::tanh,$safeeval,'&tanh');
734: $safehole->wrap(\&Math::Cephes::asinh,$safeeval,'&asinh');
735: $safehole->wrap(\&Math::Cephes::acosh,$safeeval,'&acosh');
736: $safehole->wrap(\&Math::Cephes::atanh,$safeeval,'&atanh');
737: $safehole->wrap(\&Math::Cephes::erf,$safeeval,'&erf');
738: $safehole->wrap(\&Math::Cephes::erfc,$safeeval,'&erfc');
739: $safehole->wrap(\&Math::Cephes::j0,$safeeval,'&j0');
740: $safehole->wrap(\&Math::Cephes::j1,$safeeval,'&j1');
741: $safehole->wrap(\&Math::Cephes::jn,$safeeval,'&jn');
742: $safehole->wrap(\&Math::Cephes::jv,$safeeval,'&jv');
743: $safehole->wrap(\&Math::Cephes::y0,$safeeval,'&y0');
744: $safehole->wrap(\&Math::Cephes::y1,$safeeval,'&y1');
745: $safehole->wrap(\&Math::Cephes::yn,$safeeval,'&yn');
746: $safehole->wrap(\&Math::Cephes::yv,$safeeval,'&yv');
1.215 albertel 747:
748: $safehole->wrap(\&Math::Cephes::bdtr ,$safeeval,'&bdtr' );
749: $safehole->wrap(\&Math::Cephes::bdtrc ,$safeeval,'&bdtrc' );
750: $safehole->wrap(\&Math::Cephes::bdtri ,$safeeval,'&bdtri' );
751: $safehole->wrap(\&Math::Cephes::btdtr ,$safeeval,'&btdtr' );
752: $safehole->wrap(\&Math::Cephes::chdtr ,$safeeval,'&chdtr' );
753: $safehole->wrap(\&Math::Cephes::chdtrc,$safeeval,'&chdtrc');
754: $safehole->wrap(\&Math::Cephes::chdtri,$safeeval,'&chdtri');
755: $safehole->wrap(\&Math::Cephes::fdtr ,$safeeval,'&fdtr' );
756: $safehole->wrap(\&Math::Cephes::fdtrc ,$safeeval,'&fdtrc' );
757: $safehole->wrap(\&Math::Cephes::fdtri ,$safeeval,'&fdtri' );
758: $safehole->wrap(\&Math::Cephes::gdtr ,$safeeval,'&gdtr' );
759: $safehole->wrap(\&Math::Cephes::gdtrc ,$safeeval,'&gdtrc' );
760: $safehole->wrap(\&Math::Cephes::nbdtr ,$safeeval,'&nbdtr' );
761: $safehole->wrap(\&Math::Cephes::nbdtrc,$safeeval,'&nbdtrc');
762: $safehole->wrap(\&Math::Cephes::nbdtri,$safeeval,'&nbdtri');
763: $safehole->wrap(\&Math::Cephes::ndtr ,$safeeval,'&ndtr' );
764: $safehole->wrap(\&Math::Cephes::ndtri ,$safeeval,'&ndtri' );
765: $safehole->wrap(\&Math::Cephes::pdtr ,$safeeval,'&pdtr' );
766: $safehole->wrap(\&Math::Cephes::pdtrc ,$safeeval,'&pdtrc' );
767: $safehole->wrap(\&Math::Cephes::pdtri ,$safeeval,'&pdtri' );
768: $safehole->wrap(\&Math::Cephes::stdtr ,$safeeval,'&stdtr' );
769: $safehole->wrap(\&Math::Cephes::stdtri,$safeeval,'&stdtri');
770:
771: # $safehole->wrap(\&Math::Cephes::new_fract,$safeeval,'&new_fract');
772: # $safehole->wrap(\&Math::Cephes::radd,$safeeval,'&radd');
773: # $safehole->wrap(\&Math::Cephes::rsub,$safeeval,'&rsub');
774: # $safehole->wrap(\&Math::Cephes::rmul,$safeeval,'&rmul');
775: # $safehole->wrap(\&Math::Cephes::rdiv,$safeeval,'&rdiv');
776: # $safehole->wrap(\&Math::Cephes::euclid,$safeeval,'&euclid');
777:
1.91 ng 778: $safehole->wrap(\&Math::Random::random_beta,$safeeval,'&math_random_beta');
779: $safehole->wrap(\&Math::Random::random_chi_square,$safeeval,'&math_random_chi_square');
780: $safehole->wrap(\&Math::Random::random_exponential,$safeeval,'&math_random_exponential');
781: $safehole->wrap(\&Math::Random::random_f,$safeeval,'&math_random_f');
782: $safehole->wrap(\&Math::Random::random_gamma,$safeeval,'&math_random_gamma');
783: $safehole->wrap(\&Math::Random::random_multivariate_normal,$safeeval,'&math_random_multivariate_normal');
784: $safehole->wrap(\&Math::Random::random_multinomial,$safeeval,'&math_random_multinomial');
785: $safehole->wrap(\&Math::Random::random_noncentral_chi_square,$safeeval,'&math_random_noncentral_chi_square');
786: $safehole->wrap(\&Math::Random::random_noncentral_f,$safeeval,'&math_random_noncentral_f');
787: $safehole->wrap(\&Math::Random::random_normal,$safeeval,'&math_random_normal');
788: $safehole->wrap(\&Math::Random::random_permutation,$safeeval,'&math_random_permutation');
1.93 ng 789: $safehole->wrap(\&Math::Random::random_permuted_index,$safeeval,'&math_random_permuted_index');
1.91 ng 790: $safehole->wrap(\&Math::Random::random_uniform,$safeeval,'&math_random_uniform');
791: $safehole->wrap(\&Math::Random::random_poisson,$safeeval,'&math_random_poisson');
792: $safehole->wrap(\&Math::Random::random_uniform_integer,$safeeval,'&math_random_uniform_integer');
793: $safehole->wrap(\&Math::Random::random_negative_binomial,$safeeval,'&math_random_negative_binomial');
794: $safehole->wrap(\&Math::Random::random_binomial,$safeeval,'&math_random_binomial');
795: $safehole->wrap(\&Math::Random::random_seed_from_phrase,$safeeval,'&random_seed_from_phrase');
796: $safehole->wrap(\&Math::Random::random_set_seed_from_phrase,$safeeval,'&random_set_seed_from_phrase');
797: $safehole->wrap(\&Math::Random::random_get_seed,$safeeval,'&random_get_seed');
798: $safehole->wrap(\&Math::Random::random_set_seed,$safeeval,'&random_set_seed');
799:
1.82 ng 800: #need to inspect this class of ops
801: # $safeeval->deny(":base_orig");
1.91 ng 802: $safeinit .= ';$external::target="'.$target.'";';
1.121 albertel 803: my $rndseed;
1.123 albertel 804: my ($symb,$courseid,$domain,$name) = &Apache::lonxml::whichuser();
805: $rndseed=&Apache::lonnet::rndseed($symb,$courseid,$domain,$name);
1.121 albertel 806: $safeinit .= ';$external::randomseed='.$rndseed.';';
1.249 albertel 807: &Apache::lonxml::debug("Setting rndseed to $rndseed");
1.82 ng 808: &Apache::run::run($safeinit,$safeeval);
1.207 albertel 809: }
810:
811: sub default_homework_load {
812: my ($safeeval)=@_;
813: &Apache::lonxml::debug('Loading default_homework');
814: my $default=&Apache::lonnet::getfile('/home/httpd/html/res/adm/includes/default_homework.lcpm');
1.241 albertel 815: if ($default eq -1) {
1.207 albertel 816: &Apache::lonxml::error("<b>Unable to find <i>default_homework.lcpm</i></b>");
817: } else {
818: &Apache::run::run($default,$safeeval);
819: $Apache::lonxml::default_homework_loaded=1;
820: }
1.17 albertel 821: }
822:
1.55 albertel 823: sub startredirection {
824: $Apache::lonxml::redirection++;
825: push (@Apache::lonxml::outputstack, '');
826: }
827:
828: sub endredirection {
829: if (!$Apache::lonxml::redirection) {
1.72 albertel 830: &Apache::lonxml::error("Endredirection was called, before a startredirection, perhaps you have unbalanced tags. Some debuging information:".join ":",caller);
1.55 albertel 831: return '';
832: }
833: $Apache::lonxml::redirection--;
834: pop @Apache::lonxml::outputstack;
1.97 albertel 835: }
836:
837: sub end_tag {
838: my ($tagstack,$parstack,$token)=@_;
839: pop(@$tagstack);
840: pop(@$parstack);
841: &decreasedepth($token);
1.55 albertel 842: }
843:
1.17 albertel 844: sub initdepth {
845: @Apache::lonxml::depthcounter=();
846: $Apache::lonxml::depth=-1;
847: $Apache::lonxml::olddepth=-1;
848: }
849:
850: sub increasedepth {
1.19 albertel 851: my ($token) = @_;
1.17 albertel 852: $Apache::lonxml::depth++;
853: $Apache::lonxml::depthcounter[$Apache::lonxml::depth]++;
854: if ($Apache::lonxml::depthcounter[$Apache::lonxml::depth]==1) {
855: $Apache::lonxml::olddepth=$Apache::lonxml::depth;
856: }
1.42 albertel 857: my $curdepth=join('_',@Apache::lonxml::depthcounter);
1.64 albertel 858: &Apache::lonxml::debug("s $Apache::lonxml::depth : $Apache::lonxml::olddepth : $curdepth : $token->[1]\n");
1.54 albertel 859: #print "<br />s $Apache::lonxml::depth : $Apache::lonxml::olddepth : $curdepth : $token->[1]\n";
1.17 albertel 860: }
861:
862: sub decreasedepth {
1.19 albertel 863: my ($token) = @_;
1.17 albertel 864: $Apache::lonxml::depth--;
1.36 albertel 865: if ($Apache::lonxml::depth<$Apache::lonxml::olddepth-1) {
866: $#Apache::lonxml::depthcounter--;
867: $Apache::lonxml::olddepth=$Apache::lonxml::depth+1;
868: }
1.43 albertel 869: if ( $Apache::lonxml::depth < -1) {
1.140 albertel 870: &Apache::lonxml::warning("Missing tags, unable to properly run file.");
1.43 albertel 871: $Apache::lonxml::depth='-1';
872: }
1.42 albertel 873: my $curdepth=join('_',@Apache::lonxml::depthcounter);
1.64 albertel 874: &Apache::lonxml::debug("e $Apache::lonxml::depth : $Apache::lonxml::olddepth : $token->[1] : $curdepth\n");
1.54 albertel 875: #print "<br />e $Apache::lonxml::depth : $Apache::lonxml::olddepth : $token->[1] : $curdepth\n";
1.1 sakharuk 876: }
1.19 albertel 877:
1.180 albertel 878: sub get_all_text_unbalanced {
1.190 albertel 879: #there is a copy of this in lonpublisher.pm
1.180 albertel 880: my($tag,$pars)= @_;
881: my $token;
882: my $result='';
883: $tag='<'.$tag.'>';
884: while ($token = $$pars[-1]->get_token) {
885: if (($token->[0] eq 'T')||($token->[0] eq 'C')||($token->[0] eq 'D')) {
886: $result.=$token->[1];
887: } elsif ($token->[0] eq 'PI') {
888: $result.=$token->[2];
889: } elsif ($token->[0] eq 'S') {
890: $result.=$token->[4];
891: } elsif ($token->[0] eq 'E') {
892: $result.=$token->[2];
893: }
1.211 albertel 894: if ($result =~ /(.*)\Q$tag\E(.*)/s) {
1.180 albertel 895: &Apache::lonxml::debug('Got a winner with leftovers ::'.$2);
896: &Apache::lonxml::debug('Result is :'.$1);
897: $result=$1;
898: my $redo=$tag.$2;
899: &Apache::lonxml::newparser($pars,\$redo);
900: last;
901: }
902: }
903: return $result
1.204 albertel 904: }
905:
906: sub increment_counter {
1.247 albertel 907: my ($increment) = @_;
908: if (defined($increment) && $increment gt 0) {
909: $Apache::lonxml::counter+=$increment;
910: } else {
911: $Apache::lonxml::counter++;
912: }
1.204 albertel 913: $Apache::lonxml::counter_changed=1;
914: }
915:
916: sub init_counter {
917: if (defined($ENV{'form.counter'})) {
918: $Apache::lonxml::counter=$ENV{'form.counter'};
1.247 albertel 919: $Apache::lonxml::counter_changed=0;
1.237 sakharuk 920: } else {
1.204 albertel 921: $Apache::lonxml::counter=1;
1.247 albertel 922: $Apache::lonxml::counter_changed=1;
1.204 albertel 923: }
924: }
925:
926: sub store_counter {
927: &Apache::lonnet::appenv(('form.counter' => $Apache::lonxml::counter));
928: return '';
1.180 albertel 929: }
930:
1.19 albertel 931: sub get_all_text {
932: my($tag,$pars)= @_;
1.212 albertel 933: &Apache::lonxml::debug("Got a ".ref($pars));
1.224 albertel 934: my $gotfullstack=1;
1.212 albertel 935: if (ref($pars) ne 'ARRAY') {
1.224 albertel 936: $gotfullstack=0;
1.212 albertel 937: $pars=[$pars];
938: }
1.19 albertel 939: my $depth=0;
940: my $token;
941: my $result='';
1.57 albertel 942: if ( $tag =~ m:^/: ) {
943: my $tag=substr($tag,1);
1.212 albertel 944: #&Apache::lonxml::debug("have:$tag:");
1.223 albertel 945: my $top_empty=0;
946: while (($depth >=0) && ($#$pars > -1) && (!$top_empty)) {
1.212 albertel 947: while (($depth >=0) && ($token = $$pars[-1]->get_token)) {
948: #&Apache::lonxml::debug("e token:$token->[0]:$depth:$token->[1]:".$#$pars.":".$#Apache::lonxml::pwd);
949: if (($token->[0] eq 'T')||($token->[0] eq 'C')||($token->[0] eq 'D')) {
950: $result.=$token->[1];
951: } elsif ($token->[0] eq 'PI') {
952: $result.=$token->[2];
953: } elsif ($token->[0] eq 'S') {
954: if ($token->[1] =~ /^$tag$/i) { $depth++; }
955: $result.=$token->[4];
956: } elsif ($token->[0] eq 'E') {
957: if ( $token->[1] =~ /^$tag$/i) { $depth--; }
958: #skip sending back the last end tag
959: if ($depth > -1) { $result.=$token->[2]; } else {
960: $$pars[-1]->unget_token($token);
961: }
1.57 albertel 962: }
963: }
1.228 albertel 964: if (($depth >=0) && ($#$pars == 0) ) { $top_empty=1; }
1.212 albertel 965: if (($depth >=0) && ($#$pars > 0) ) {
966: pop(@$pars);
967: pop(@Apache::lonxml::pwd);
968: }
1.224 albertel 969: }
970: if ($top_empty && $depth >= 0) {
971: #never found the end tag ran out of text, throw error send back blank
972: &error('Never found end tag for <'.$tag.'>');
973: if ($gotfullstack) {
974: my $newstring='</'.$tag.'>'.$result;
975: &Apache::lonxml::newparser($pars,\$newstring);
976: }
977: $result='';
1.57 albertel 978: }
979: } else {
1.212 albertel 980: while ($#$pars > -1) {
981: while ($token = $$pars[-1]->get_token) {
982: #&Apache::lonxml::debug("s token:$token->[0]:$depth:$token->[1]");
983: if (($token->[0] eq 'T')||($token->[0] eq 'C')||
984: ($token->[0] eq 'D')) {
985: $result.=$token->[1];
986: } elsif ($token->[0] eq 'PI') {
987: $result.=$token->[2];
988: } elsif ($token->[0] eq 'S') {
989: if ( $token->[1] =~ /^$tag$/i) {
990: $$pars[-1]->unget_token($token); last;
991: } else {
992: $result.=$token->[4];
993: }
994: } elsif ($token->[0] eq 'E') {
995: $result.=$token->[2];
996: }
997: }
998: if (($#$pars > 0) ) {
999: pop(@$pars);
1000: pop(@Apache::lonxml::pwd);
1001: } else { last; }
1.36 albertel 1002: }
1.19 albertel 1003: }
1.212 albertel 1004: if ($result =~ m|<LONCAPA_INTERNAL_TURN_STYLE_ON />|) {
1005: $Apache::lonxml::usestyle=1;
1006: }
1007: #&Apache::lonxml::debug("Exit:$result:");
1.19 albertel 1008: return $result
1009: }
1010:
1.23 albertel 1011: sub newparser {
1012: my ($parser,$contentref,$dir) = @_;
1.167 albertel 1013: push (@$parser,HTML::LCParser->new($contentref));
1.56 albertel 1014: $$parser['-1']->xml_mode('1');
1.23 albertel 1015: if ( $dir eq '' ) {
1016: push (@Apache::lonxml::pwd, $Apache::lonxml::pwd[$#Apache::lonxml::pwd]);
1017: } else {
1018: push (@Apache::lonxml::pwd, $dir);
1019: }
1020: # &Apache::lonxml::debug("pwd:$#Apache::lonxml::pwd");
1021: # &Apache::lonxml::debug("pwd:$Apache::lonxml::pwd[$#Apache::lonxml::pwd]");
1022: }
1.1 sakharuk 1023:
1.8 albertel 1024: sub parstring {
1025: my ($token) = @_;
1026: my $temp='';
1.142 albertel 1027: foreach (@{$token->[3]}) {
1.35 www 1028: unless ($_=~/\W/) {
1.42 albertel 1029: my $val=$token->[2]->{$_};
1.231 albertel 1030: $val =~ s/([\%\@\\\"\'])/\\$1/g;
1.51 albertel 1031: #if ($val =~ m/^[\%\@]/) { $val="\\".$val; }
1.42 albertel 1032: $temp .= "my \$$_=\"$val\";"
1.20 albertel 1033: }
1.142 albertel 1034: }
1.8 albertel 1035: return $temp;
1036: }
1.22 albertel 1037:
1.34 www 1038: sub writeallows {
1.126 www 1039: unless ($#extlinks>=0) { return; }
1.34 www 1040: my $thisurl='/res/'.&Apache::lonnet::declutter(shift);
1.111 www 1041: if ($ENV{'httpref.'.$thisurl}) {
1042: $thisurl=$ENV{'httpref.'.$thisurl};
1043: }
1.34 www 1044: my $thisdir=$thisurl;
1045: $thisdir=~s/\/[^\/]+$//;
1046: my %httpref=();
1.142 albertel 1047: foreach (@extlinks) {
1.34 www 1048: $httpref{'httpref.'.
1.125 www 1049: &Apache::lonnet::hreflocation($thisdir,$_)}=$thisurl;
1.142 albertel 1050: }
1.126 www 1051: @extlinks=();
1.34 www 1052: &Apache::lonnet::appenv(%httpref);
1053: }
1054:
1.66 www 1055: #
1056: # Afterburner handles anchors, highlights and links
1057: #
1058: sub afterburn {
1059: my $result=shift;
1.154 albertel 1060: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
1061: ['highlight','anchor','link']);
1.66 www 1062: if ($ENV{'form.highlight'}) {
1.142 albertel 1063: foreach (split(/\,/,$ENV{'form.highlight'})) {
1.66 www 1064: my $anchorname=$_;
1065: my $matchthis=$anchorname;
1066: $matchthis=~s/\_+/\\s\+/g;
1067: $result=~s/($matchthis)/\<font color=\"red\"\>$1\<\/font\>/gs;
1.142 albertel 1068: }
1.66 www 1069: }
1070: if ($ENV{'form.link'}) {
1.142 albertel 1071: foreach (split(/\,/,$ENV{'form.link'})) {
1.66 www 1072: my ($anchorname,$linkurl)=split(/\>/,$_);
1073: my $matchthis=$anchorname;
1074: $matchthis=~s/\_+/\\s\+/g;
1075: $result=~s/($matchthis)/\<a href=\"$linkurl\"\>$1\<\/a\>/gs;
1.142 albertel 1076: }
1.66 www 1077: }
1078: if ($ENV{'form.anchor'}) {
1079: my $anchorname=$ENV{'form.anchor'};
1080: my $matchthis=$anchorname;
1081: $matchthis=~s/\_+/\\s\+/g;
1082: $result=~s/($matchthis)/\<a name=\"$anchorname\"\>$1\<\/a\>/s;
1083: $result.=(<<"ENDSCRIPT");
1.226 albertel 1084: <script type="text/javascript">
1.66 www 1085: document.location.hash='$anchorname';
1086: </script>
1087: ENDSCRIPT
1088: }
1089: return $result;
1090: }
1091:
1.79 www 1092: sub storefile {
1093: my ($file,$contents)=@_;
1094: if (my $fh=Apache::File->new('>'.$file)) {
1095: print $fh $contents;
1096: $fh->close();
1.147 albertel 1097: } else {
1098: &warning("Unable to save file $file");
1.79 www 1099: }
1100: }
1101:
1.151 albertel 1102: sub createnewhtml {
1103: my $filecontents=(<<SIMPLECONTENT);
1.78 www 1104: <html>
1105: <head>
1106: <title>
1107: Title of Document Goes Here
1108: </title>
1109: </head>
1110: <body bgcolor="#FFFFFF">
1111:
1112: Body of Document Goes Here
1113:
1114: </body>
1115: </html>
1116: SIMPLECONTENT
1.151 albertel 1117: return $filecontents;
1118: }
1119:
1.147 albertel 1120:
1.151 albertel 1121: sub inserteditinfo {
1122: my ($result,$filecontents)=@_;
1.157 albertel 1123: $filecontents = &HTML::Entities::encode($filecontents);
1.147 albertel 1124: # my $editheader='<a href="#editsection">Edit below</a><hr />';
1.240 albertel 1125: my $xml_help = '<table><tr><td>'.
1126: &Apache::loncommon::help_open_topic("Greek_Symbols",'Greek Symbols',
1127: undef,undef,600)
1128: .'</td><td>'.
1129: &Apache::loncommon::help_open_topic("Other_Symbols",'Other Symbols',
1130: undef,undef,600)
1131: .'</td></tr></table>';
1.161 albertel 1132: my $buttons=(<<BUTTONS);
1133: <input type="submit" name="attemptclean"
1134: value="Save and then attempt to clean HTML" />
1135: <input type="submit" name="savethisfile" value="Save this" />
1136: <input type="submit" name="viewmode" value="View" />
1137: BUTTONS
1.78 www 1138: my $editfooter=(<<ENDFOOTER);
1139: <hr />
1140: <a name="editsection" />
1141: <form method="post">
1.240 albertel 1142: $xml_help
1.161 albertel 1143: <input type="hidden" name="editmode" value="Edit" />
1.170 www 1144: $buttons<br />
1.78 www 1145: <textarea cols="80" rows="40" name="filecont">$filecontents</textarea>
1.170 www 1146: <br />$buttons
1.78 www 1147: <br />
1148: </form>
1149: ENDFOOTER
1.147 albertel 1150: # $result=~s/(\<body[^\>]*\>)/$1$editheader/is;
1.78 www 1151: $result=~s/(\<\/body\>)/$editfooter/is;
1152: return $result;
1153: }
1154:
1.152 albertel 1155: sub get_target {
1156: my $viewgrades=&Apache::lonnet::allowed('vgr',$ENV{'request.course.id'});
1157: if ( $ENV{'request.state'} eq 'published') {
1158: if ( defined($ENV{'form.grade_target'})
1159: && ($viewgrades == 'F' )) {
1160: return ($ENV{'form.grade_target'});
1.153 albertel 1161: } elsif (defined($ENV{'form.grade_target'})) {
1162: if (($ENV{'form.grade_target'} eq 'web') ||
1163: ($ENV{'form.grade_target'} eq 'tex') ) {
1164: return $ENV{'form.grade_target'}
1165: } else {
1166: return 'web';
1167: }
1.152 albertel 1168: } else {
1169: return 'web';
1170: }
1171: } elsif ($ENV{'request.state'} eq 'construct') {
1172: if ( defined($ENV{'form.grade_target'})) {
1173: return ($ENV{'form.grade_target'});
1174: } else {
1175: return 'web';
1176: }
1177: } else {
1178: return 'web';
1179: }
1180: }
1181:
1.24 sakharuk 1182: sub handler {
1183: my $request=shift;
1.68 www 1184:
1.152 albertel 1185: my $target=&get_target();
1.68 www 1186:
1.65 albertel 1187: $Apache::lonxml::debug=0;
1.68 www 1188:
1.25 sakharuk 1189: if ($ENV{'browser.mathml'}) {
1.27 albertel 1190: $request->content_type('text/xml');
1191: } else {
1192: $request->content_type('text/html');
1.25 sakharuk 1193: }
1.141 albertel 1194: &Apache::loncommon::no_cache($request);
1.27 albertel 1195: $request->send_http_header;
1.141 albertel 1196:
1.45 www 1197: return OK if $request->header_only;
1.27 albertel 1198:
1.79 www 1199:
1200: my $file=&Apache::lonnet::filelocation("",$request->uri);
1.78 www 1201: #
1202: # Edit action? Save file.
1203: #
1204: unless ($ENV{'request.state'} eq 'published') {
1.107 www 1205: if (($ENV{'form.savethisfile'}) || ($ENV{'form.attemptclean'})) {
1.79 www 1206: &storefile($file,$ENV{'form.filecont'});
1.78 www 1207: }
1208: }
1.24 sakharuk 1209: my %mystyle;
1.147 albertel 1210: my $result = '';
1.50 albertel 1211: my $filecontents=&Apache::lonnet::getfile($file);
1.241 albertel 1212: if ($filecontents eq -1) {
1.78 www 1213: $result=(<<ENDNOTFOUND);
1214: <html>
1215: <head>
1216: <title>File not found</title>
1217: </head>
1218: <body bgcolor="#FFFFFF">
1219: <b>File not found: $file</b>
1220: </body>
1221: </html>
1222: ENDNOTFOUND
1.50 albertel 1223: $filecontents='';
1.151 albertel 1224: if ($ENV{'request.state'} ne 'published') {
1225: $filecontents=&createnewhtml();
1.161 albertel 1226: $ENV{'form.editmode'}='Edit'; #force edit mode
1.151 albertel 1227: }
1.50 albertel 1228: } else {
1.147 albertel 1229: unless ($ENV{'request.state'} eq 'published') {
1230: if ($ENV{'form.attemptclean'}) {
1231: $filecontents=&htmlclean($filecontents,1);
1.107 www 1232: }
1.147 albertel 1233: }
1.161 albertel 1234: if (!$ENV{'form.editmode'} || $ENV{'form.viewmode'}) {
1.172 albertel 1235: $result = &Apache::lonxml::xmlparse($request,$target,$filecontents,
1236: '',%mystyle);
1.147 albertel 1237: }
1.78 www 1238: }
1239:
1240: #
1241: # Edit action? Insert editing commands
1242: #
1243: unless ($ENV{'request.state'} eq 'published') {
1.161 albertel 1244: if ($ENV{'form.editmode'} && (!($ENV{'form.viewmode'}))) {
1.177 www 1245: my $displayfile=$request->uri;
1246: $displayfile=~s/^\/[^\/]*//;
1247: $result='<html><body bgcolor="#FFFFFF"><h3>'.$displayfile.
1248: '</h3></body></html>';
1.78 www 1249: $result=&inserteditinfo($result,$filecontents);
1.147 albertel 1250: }
1.66 www 1251: }
1.147 albertel 1252:
1.126 www 1253: writeallows($request->uri);
1.252 ! bowersj2 1254:
! 1255: # If we're editing, show the filename of the resource in the frame's main
! 1256: # title
! 1257: if ($ENV{'form.editmode'}) {
! 1258: my $filename = $request->uri;
! 1259: # Everything after the last /
! 1260: $filename = substr($filename, rindex($filename, '/') + 1);
! 1261: $result = substr($result, 0, rindex($result, '</html>'));
! 1262: $result .= "<script>top.document.title = '$filename - LON-CAPA Construction Space';</script>";
! 1263: $result .= "\n</html>\n";
! 1264: }
! 1265:
1.50 albertel 1266:
1.67 www 1267: $request->print($result);
1.64 albertel 1268:
1.45 www 1269: return OK;
1.24 sakharuk 1270: }
1.147 albertel 1271:
1.22 albertel 1272: sub debug {
1273: if ($Apache::lonxml::debug eq 1) {
1.146 albertel 1274: $|=1;
1.202 albertel 1275: print('<font size="-2"<pre>DEBUG:'.&HTML::Entities::encode($_[0])."</pre></font>\n");
1.22 albertel 1276: }
1277: }
1.49 albertel 1278:
1.22 albertel 1279: sub error {
1.205 www 1280: $errorcount++;
1.74 albertel 1281: if (($Apache::lonxml::debug eq 1) || ($ENV{'request.state'} eq 'construct') ) {
1.166 matthew 1282: # If printing in construction space, put the error inside <pre></pre>
1.167 albertel 1283: print "<b>ERROR:</b>".join("\n",@_)."\n";
1.52 albertel 1284: } else {
1285: print "<b>An Error occured while processing this resource. The instructor has been notified.</b> <br />";
1286: #notify author
1.146 albertel 1287: &Apache::lonmsg::author_res_msg($ENV{'request.filename'},join('<br />',@_));
1.52 albertel 1288: #notify course
1289: if ( $ENV{'request.course.id'} ) {
1.209 www 1290: my (undef,%users)=&Apache::lonfeedback::decide_receiver(undef,0,1,1,1);
1.143 www 1291: my $declutter=&Apache::lonnet::declutter($ENV{'request.filename'});
1.209 www 1292: foreach (keys %users) {
1293: my ($user,$domain) = split(/:/, $_);
1.143 www 1294: &Apache::lonmsg::user_normal_msg($user,$domain,
1.146 albertel 1295: "Error [$declutter]",join('<br />',@_));
1.52 albertel 1296: }
1297: }
1.74 albertel 1298:
1.52 albertel 1299: #FIXME probably shouldn't have me get everything forever.
1.146 albertel 1300: &Apache::lonmsg::user_normal_msg('albertel','msu',"Error in $ENV{'request.filename'}",join('<br />',@_));
1.74 albertel 1301: #&Apache::lonmsg::user_normal_msg('albertel','103',"Error in $ENV{'request.filename'}",$_[0]);
1.52 albertel 1302: }
1.22 albertel 1303: }
1.49 albertel 1304:
1.22 albertel 1305: sub warning {
1.205 www 1306: $warningcount++;
1.73 harris41 1307: if ($ENV{'request.state'} eq 'construct') {
1.146 albertel 1308: print "<b>W</b>ARNING<b>:</b>".join('<br />',@_)."<br />\n";
1.73 harris41 1309: }
1.83 albertel 1310: }
1311:
1312: sub get_param {
1.213 albertel 1313: my ($param,$parstack,$safeeval,$context,$case_insensitive) = @_;
1314: if ( ! $context ) { $context = -1; }
1315: my $args ='';
1316: if ( $#$parstack > (-2-$context) ) { $args=$$parstack[$context]; }
1317: if ( ! $args ) { return undef; }
1318: if ( $case_insensitive ) {
1319: if ($args =~ s/(my \$)(\Q$param\E)(=\")/$1.lc($2).$3/ei) {
1320: return &Apache::run::run("{$args;".'return $'.$param.'}',
1321: $safeeval); #'
1322: } else {
1323: return undef;
1324: }
1325: } else {
1326: if ( $args =~ /my \$\Q$param\E=\"/ ) {
1327: return &Apache::run::run("{$args;".'return $'.$param.'}',
1328: $safeeval); #'
1329: } else {
1330: return undef;
1331: }
1332: }
1.22 albertel 1333: }
1334:
1.132 albertel 1335: sub get_param_var {
1.213 albertel 1336: my ($param,$parstack,$safeeval,$context,$case_insensitive) = @_;
1.132 albertel 1337: if ( ! $context ) { $context = -1; }
1338: my $args ='';
1339: if ( $#$parstack > (-2-$context) ) { $args=$$parstack[$context]; }
1.230 albertel 1340: &Apache::lonxml::debug("Args are $args param is $param");
1.213 albertel 1341: if ($case_insensitive) {
1342: if (! ($args=~s/(my \$)(\Q$param\E)(=\")/$1.lc($2).$3/ei)) {
1343: return undef;
1344: }
1345: } elsif ( $args !~ /my \$\Q$param\E=\"/ ) { return undef; }
1.132 albertel 1346: my $value=&Apache::run::run("{$args;".'return $'.$param.'}',$safeeval); #'
1.230 albertel 1347: &Apache::lonxml::debug("first run is $value");
1348: if ($value =~ /^[\$\@\%]\w+$/) {
1349: &Apache::lonxml::debug("doing second");
1350: my @result=&Apache::run::run("return $value",$safeeval,1);
1351: if (!defined($result[0])) {
1352: return $value
1353: } else {
1354: if (wantarray) { return @result; } else { return $result[0]; }
1355: }
1.132 albertel 1356: } else {
1357: return $value;
1358: }
1359: }
1360:
1.74 albertel 1361: sub register_insert {
1.75 albertel 1362: my @data = split /\n/, &Apache::lonnet::getfile('/home/httpd/lonTabs/insertlist.tab');
1.74 albertel 1363: my $i;
1.76 albertel 1364: my $tagnum=0;
1.74 albertel 1365: my @order;
1366: for ($i=0;$i < $#data; $i++) {
1367: my $line = $data[$i];
1368: if ( $line =~ /^\#/ || $line =~ /^\s*\n/) { next; }
1369: if ( $line =~ /TABLE/ ) { last; }
1.92 albertel 1370: my ($tag,$descrip,$color,$function,$show) = split(/,/, $line);
1.135 albertel 1371: if ($tag) {
1372: $insertlist{"$tagnum.tag"} = $tag;
1373: $insertlist{"$tagnum.description"} = $descrip;
1374: $insertlist{"$tagnum.color"} = $color;
1375: $insertlist{"$tagnum.function"} = $function;
1376: if (!defined($show)) { $show='yes'; }
1377: $insertlist{"$tagnum.show"}= $show;
1378: $insertlist{"$tag.num"}=$tagnum;
1379: $tagnum++;
1380: }
1.74 albertel 1381: }
1.76 albertel 1382: $i++; #skipping TABLE line
1383: $tagnum = 0;
1.74 albertel 1384: for (;$i < $#data;$i++) {
1385: my $line = $data[$i];
1.76 albertel 1386: my ($mnemonic,@which) = split(/ +/,$line);
1387: my $tag = $insertlist{"$tagnum.tag"};
1.144 matthew 1388: for (my $j=0;$j <=$#which;$j++) {
1.74 albertel 1389: if ( $which[$j] eq 'Y' ) {
1.76 albertel 1390: if ($insertlist{"$j.show"} ne 'no') {
1391: push(@{ $insertlist{"$tag.which"} },$j);
1392: }
1.74 albertel 1393: }
1394: }
1.76 albertel 1395: $tagnum++;
1.74 albertel 1396: }
1397: }
1.98 albertel 1398:
1399: sub description {
1400: my ($token)=@_;
1.138 albertel 1401: my $tagnum;
1402: my $tag=$token->[1];
1403: foreach my $namespace (reverse @Apache::lonxml::namespace) {
1404: my $testtag=$namespace.'::'.$tag;
1405: $tagnum=$insertlist{"$testtag.num"};
1406: if (defined($tagnum)) { last; }
1407: }
1408: if (!defined ($tagnum)) { $tagnum=$Apache::lonxml::insertlist{"$tag.num"}; }
1409: return $insertlist{$tagnum.'.description'};
1.98 albertel 1410: }
1.123 albertel 1411:
1412: # ----------------------------------------------------------------- whichuser
1413: # returns a list of $symb, $courseid, $domain, $name that is correct for
1414: # calls to lonnet functions for this setup.
1415: # - looks for form.grade_ parameters
1416: sub whichuser {
1.245 albertel 1417: my ($symb,$courseid,$domain,$name,$publicuser);
1.123 albertel 1418: if (defined($ENV{'form.grade_symb'})) {
1419: my $tmp_courseid=$ENV{'form.grade_courseid'};
1420: my $allowed=&Apache::lonnet::allowed('mgr',$tmp_courseid);
1421: if ($allowed) {
1422: $symb=$ENV{'form.grade_symb'};
1423: $courseid=$ENV{'form.grade_courseid'};
1424: $domain=$ENV{'form.grade_domain'};
1425: $name=$ENV{'form.grade_username'};
1426: }
1.134 albertel 1427: } else {
1.244 albertel 1428: $symb=&Apache::lonnet::symbread();
1429: $courseid=$ENV{'request.course.id'};
1430: $domain=$ENV{'user.domain'};
1431: $name=$ENV{'user.name'};
1432: if ($name eq 'public' && $domain eq 'public') {
1433: if (!defined($ENV{'form.username'})) {
1434: $ENV{'form.username'}.=time.rand(10000000);
1435: }
1436: $name.=$ENV{'form.username'};
1437: }
1.123 albertel 1438: }
1.245 albertel 1439: return ($symb,$courseid,$domain,$name,$publicuser);
1.123 albertel 1440: }
1441:
1.1 sakharuk 1442: 1;
1443: __END__
1.68 www 1444:
1445:
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