Annotation of loncom/xml/lonxml.pm, revision 1.284
1.2 sakharuk 1: # The LearningOnline Network with CAPA
1.3 sakharuk 2: # XML Parser Module
1.2 sakharuk 3: #
1.284 ! www 4: # $Id: lonxml.pm,v 1.283 2003/10/02 05:45:38 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 $warningcount);
1.1 sakharuk 63: use strict;
1.167 albertel 64: use HTML::LCParser();
1.161 albertel 65: use HTML::TreeBuilder();
66: use HTML::Entities();
67: use Safe();
68: use Safe::Hole();
69: use Math::Cephes();
70: use Math::Random();
71: use Opcode();
1.271 www 72: use POSIX qw(strftime);
1.72 albertel 73:
1.266 bowersj2 74:
1.72 albertel 75: sub register {
1.141 albertel 76: my ($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();
99: use Apache::edit();
1.266 bowersj2 100: use Apache::inputtags();
101: use Apache::outputtags();
1.161 albertel 102: use Apache::lonnet();
103: use Apache::File();
104: use Apache::loncommon();
1.198 www 105: use Apache::lonfeedback();
1.200 www 106: use Apache::lonmsg();
1.217 matthew 107: use Apache::loncacc();
1.280 www 108: use Apache::lonlocal;
1.79 www 109:
1.72 albertel 110: #================================================== Main subroutine: xmlparse
111: #debugging control, to turn on debugging modify the correct handler
112: $Apache::lonxml::debug=0;
1.206 albertel 113:
114: # keeps count of the number of warnings and errors generated in a parse
115: $warningcount=0;
116: $errorcount=0;
1.72 albertel 117:
118: #path to the directory containing the file currently being processed
119: @pwd=();
120:
121: #these two are used for capturing a subset of the output for later processing,
122: #don't touch them directly use &startredirection and &endredirection
123: @outputstack = ();
124: $redirection = 0;
125:
126: #controls wheter the <import> tag actually does
127: $import = 1;
128: @extlinks=();
129:
130: # meta mode is a bit weird only some output is to be turned off
131: #<output> tag turns metamode off (defined in londefdef.pm)
132: $metamode = 0;
133:
134: # turns on and of run::evaluate actually derefencing var refs
135: $evaluate = 1;
1.7 albertel 136:
1.74 albertel 137: # data structure for eidt mode, determines what tags can go into what other tags
138: %insertlist=();
1.68 www 139:
1.99 albertel 140: # stores the list of active tag namespaces
1.76 albertel 141: @namespace=();
142:
1.169 albertel 143: # if 0 all high ASCII characters will be encoded into HTML Entities
144: $prevent_entity_encode=0;
145:
1.99 albertel 146: # has the dynamic menu been updated to know about this resource
147: $Apache::lonxml::registered=0;
148:
1.172 albertel 149: # a pointer the the Apache request object
150: $Apache::lonxml::request='';
151:
1.216 sakharuk 152: # a problem number counter, and check on ether it is used
1.237 sakharuk 153: $Apache::lonxml::counter=1;
1.204 albertel 154: $Apache::lonxml::counter_changed=0;
155:
1.212 albertel 156: #internal check on whether to look at style defs
157: $Apache::lonxml::usestyle=1;
1.260 albertel 158:
159: #locations used to store the parameter string for style substitutions
160: $Apache::lonxml::style_values='';
161: $Apache::lonxml::style_end_values='';
1.212 albertel 162:
1.281 albertel 163: #array of ssi calls that need to occur after we are done parsing
164: @Apache::lonxml::ssi_info=();
165:
1.282 albertel 166: #should we do the postag variable interpolation
167: $Apache::lonxml::post_evaluate=1;
168:
1.68 www 169: sub xmlbegin {
170: my $output='';
171: if ($ENV{'browser.mathml'}) {
172: $output='<?xml version="1.0"?>'
173: .'<?xml-stylesheet type="text/css" href="/adm/MathML/mathml.css"?>'
174: .'<!DOCTYPE html SYSTEM "/adm/MathML/mathml.dtd" '
175: .'[<!ENTITY mathns "http://www.w3.org/1998/Math/MathML">]>'
176: .'<html xmlns:math="http://www.w3.org/1998/Math/MathML" '
177: .'xmlns="http://www.w3.org/TR/REC-html40">';
178: } else {
179: $output='<html>';
180: }
181: return $output;
182: }
183:
184: sub xmlend {
1.278 www 185: my $mode='xml';
186: my $status='OPEN';
187: if ($Apache::lonhomework::parsing_a_problem) {
188: $mode='problem';
189: $status=$Apache::inputtags::status[-1];
190: }
1.277 www 191: return &Apache::lonfeedback::list_discussion().'</html>';
1.119 www 192: }
193:
194: sub tokeninputfield {
1.120 www 195: my $defhost=$Apache::lonnet::perlvar{'lonHostID'};
196: $defhost=~tr/a-z/A-Z/;
1.119 www 197: return (<<ENDINPUTFIELD)
1.226 albertel 198: <script type="text/javascript">
1.120 www 199: function updatetoken() {
200: var comp=new Array;
201: var barcode=unescape(document.tokeninput.barcode.value);
202: comp=barcode.split('*');
203: if (typeof(comp[0])!="undefined") {
204: document.tokeninput.codeone.value=comp[0];
205: }
206: if (typeof(comp[1])!="undefined") {
207: document.tokeninput.codetwo.value=comp[1];
208: }
209: if (typeof(comp[2])!="undefined") {
210: comp[2]=comp[2].toUpperCase();
211: document.tokeninput.codethree.value=comp[2];
212: }
213: document.tokeninput.barcode.value='';
214: }
215: </script>
216: <form method="post" name="tokeninput">
1.119 www 217: <table border="2" bgcolor="#FFFFBB">
218: <tr><th>DocID Checkin</th></tr>
219: <tr><td>
220: <table>
221: <tr>
222: <td>Scan in Barcode</td>
1.120 www 223: <td><input type="text" size="22" name="barcode"
224: onChange="updatetoken()"/></td>
1.119 www 225: </tr>
226: <tr><td><i>or</i> Type in DocID</td>
227: <td>
228: <input type="text" size="5" name="codeone" />
1.120 www 229: <b><font size="+2">*</font></b>
1.119 www 230: <input type="text" size="5" name="codetwo" />
1.120 www 231: <b><font size="+2">*</font></b>
232: <input type="text" size="10" name="codethree" value="$defhost"
233: onChange="this.value=this.value.toUpperCase()" />
1.119 www 234: </td></tr>
235: </table>
236: </td></tr>
237: <tr><td><input type="submit" value="Check in DocID" /></td></tr>
238: </table>
239: </form>
240: ENDINPUTFIELD
1.112 www 241: }
242:
1.116 www 243: sub maketoken {
1.118 www 244: my ($symb,$tuname,$tudom,$tcrsid)=@_;
1.112 www 245: unless ($symb) {
246: $symb=&Apache::lonnet::symbread();
247: }
248: unless ($tuname) {
249: $tuname=$ENV{'user.name'};
250: $tudom=$ENV{'user.domain'};
251: $tcrsid=$ENV{'request.course.id'};
252: }
1.116 www 253:
1.118 www 254: return &Apache::lonnet::checkout($symb,$tuname,$tudom,$tcrsid);
255: }
256:
257: sub printtokenheader {
1.133 albertel 258: my ($target,$token,$tsymb,$tcrsid,$tudom,$tuname)=@_;
1.116 www 259: unless ($token) { return ''; }
1.118 www 260:
1.133 albertel 261: my ($symb,$courseid,$domain,$name) = &Apache::lonxml::whichuser();
262: unless ($tsymb) {
263: $tsymb=$symb;
1.118 www 264: }
265: unless ($tuname) {
1.133 albertel 266: $tuname=$name;
267: $tudom=$domain;
268: $tcrsid=$courseid;
1.118 www 269: }
1.114 www 270:
271: my %reply=&Apache::lonnet::get('environment',
272: ['firstname','middlename','lastname','generation'],
273: $tudom,$tuname);
274: my $plainname=$reply{'firstname'}.' '.
275: $reply{'middlename'}.' '.
276: $reply{'lastname'}.' '.
277: $reply{'generation'};
278:
1.112 www 279: if ($target eq 'web') {
1.145 www 280: my %idhash=&Apache::lonnet::idrget($tudom,($tuname));
1.115 www 281: return
1.221 albertel 282: '<img align="right" src="/cgi-bin/barcode.png?encode='.$token.'" />'.
1.284 ! www 283: &mt('Checked out for').' '.$plainname.
! 284: '<br />'.&mt('User').': '.$tuname.' at '.$tudom.
! 285: '<br />'.&mt('ID').': '.$idhash{$tuname}.
! 286: '<br />'.&mt('CourseID').': '.$tcrsid.
! 287: '<br />'.&mt('Course').': '.$ENV{'course.'.$tcrsid.'.description'}.
! 288: '<br />'.&mt('DocID').': '.$token.
! 289: '<br />'.&mt('Time').': '.&Apache::lonlocal::locallocaltime().'<hr />';
1.112 www 290: } else {
1.121 albertel 291: return $token;
1.112 www 292: }
1.68 www 293: }
294:
1.70 www 295: sub fontsettings() {
296: my $headerstring='';
297: if (($ENV{'browser.os'} eq 'mac') && (!$ENV{'browser.mathml'})) {
1.248 albertel 298: $headerstring.=
299: '<meta Content-Type="text/html; charset=x-mac-roman">';
1.263 albertel 300: } elsif (!$ENV{'browser.mathml'} && $ENV{'browser.unicode'}) {
1.248 albertel 301: $headerstring.=
302: '<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />';
1.70 www 303: }
304: return $headerstring;
1.68 www 305: }
306:
1.48 albertel 307: sub printalltags {
308: my $temp;
309: foreach $temp (sort keys %Apache::lonxml::alltags) {
1.141 albertel 310: &Apache::lonxml::debug("$temp -- ".
311: join(',',@{ $Apache::lonxml::alltags{$temp} }));
1.48 albertel 312: }
313: }
1.31 sakharuk 314:
1.3 sakharuk 315: sub xmlparse {
1.172 albertel 316: my ($request,$target,$content_file_string,$safeinit,%style_for_target) = @_;
1.96 albertel 317:
1.172 albertel 318: &setup_globals($request,$target);
1.232 albertel 319: &Apache::inputtags::initialize_inputtags();
320: &Apache::outputtags::initialize_outputtags();
321: &Apache::edit::initialize_edit();
1.244 albertel 322:
1.178 www 323: #
324: # do we have a course style file?
325: #
326:
1.208 albertel 327: if ($ENV{'request.course.id'} && $ENV{'request.state'} ne 'construct') {
1.178 www 328: my $bodytext=
329: $ENV{'course.'.$ENV{'request.course.id'}.'.default_xml_style'};
330: if ($bodytext) {
331: my $location=&Apache::lonnet::filelocation('',$bodytext);
332: my $styletext=&Apache::lonnet::getfile($location);
333: if ($styletext ne '-1') {
334: %style_for_target = (%style_for_target,
335: &Apache::style::styleparser($target,$styletext));
336: }
337: }
338: }
1.255 sakharuk 339: #&printalltags();
1.16 albertel 340: my @pars = ();
1.23 albertel 341: my $pwd=$ENV{'request.filename'};
342: $pwd =~ s:/[^/]*$::;
343: &newparser(\@pars,\$content_file_string,$pwd);
1.24 sakharuk 344:
1.3 sakharuk 345: my $safeeval = new Safe;
1.40 albertel 346: my $safehole = new Safe::Hole;
1.82 ng 347: &init_safespace($target,$safeeval,$safehole,$safeinit);
1.3 sakharuk 348: #-------------------- Redefinition of the target in the case of compound target
349:
350: ($target, my @tenta) = split('&&',$target);
351:
1.150 albertel 352: my @stack = ();
1.3 sakharuk 353: my @parstack = ();
1.17 albertel 354: &initdepth;
1.67 www 355:
1.101 albertel 356: my $finaloutput = &inner_xmlparse($target,\@stack,\@parstack,\@pars,
357: $safeeval,\%style_for_target);
1.255 sakharuk 358:
1.125 www 359: if ($ENV{'request.uri'}) {
360: &writeallows($ENV{'request.uri'});
361: }
1.281 albertel 362: &do_registered_ssi();
1.204 albertel 363: if ($Apache::lonxml::counter_changed) { &store_counter() }
1.3 sakharuk 364: return $finaloutput;
1.106 www 365: }
366:
367: sub htmlclean {
1.107 www 368: my ($raw,$full)=@_;
1.106 www 369:
370: my $tree = HTML::TreeBuilder->new;
371: $tree->ignore_unknown(0);
1.140 albertel 372:
1.106 www 373: $tree->parse($raw);
374:
1.107 www 375: my $output= $tree->as_HTML(undef,' ');
1.140 albertel 376:
1.161 albertel 377: $output=~s/\<(br|hr|img|meta|allow)(.*?)\>/\<$1$2 \/\>/gis;
1.111 www 378: $output=~s/\<\/(br|hr|img|meta|allow)\>//gis;
1.107 www 379: unless ($full) {
380: $output=~s/\<[\/]*(body|head|html)\>//gis;
381: }
1.106 www 382:
383: $tree = $tree->delete;
384:
385: return $output;
1.15 albertel 386: }
387:
1.191 albertel 388: sub latex_special_symbols {
1.272 albertel 389: my ($string,$where)=@_;
1.235 sakharuk 390: if ($where eq 'header') {
1.272 albertel 391: $string =~ s/(\\|_|\^)/ /g;
392: $string =~ s/(\$|%|\#|&|\{|\})/\\$1/g;
1.273 sakharuk 393: $string =~ s/_/ /g;
1.229 sakharuk 394: } else {
1.272 albertel 395: $string=~s/\\ /\\char92 /g;
396: $string=~s/\^/\\char94 /g;
397: $string=~s/\~/\\char126 /g;
398: $string=~s/(&[^A-Za-z\#])/\\$1/g;
399: $string=~s/([^&])\#/$1\\#/g;
400: $string=~s/(\$|_|{|})/\\$1/g;
401: $string=~s/\\char92 /\\texttt{\\char92}/g;
402: $string=~s/(>|<)/\$$1\$/g; #more or less
403: if ($string=~m/\d%/) {$string =~ s/(\d)%/$1\\%/g;} #percent after digit
404: if ($string=~m/\s%/) {$string =~ s/(\s)%/$1\\%/g;} #percent after space
405: if ($string eq '%.') {$string = '\%.';} #percent at the end of statement
1.229 sakharuk 406: }
1.272 albertel 407: return $string;
1.188 sakharuk 408: }
409:
1.101 albertel 410: sub inner_xmlparse {
411: my ($target,$stack,$parstack,$pars,$safeeval,$style_for_target)=@_;
412: my $finaloutput = '';
413: my $result;
414: my $token;
1.258 albertel 415: my $dontpop=0;
1.101 albertel 416: while ( $#$pars > -1 ) {
417: while ($token = $$pars['-1']->get_token) {
1.261 albertel 418: if (($token->[0] eq 'T') || ($token->[0] eq 'C') ) {
1.101 albertel 419: if ($metamode<1) {
1.190 albertel 420: my $text=$token->[1];
1.193 albertel 421: if ($token->[0] eq 'C' && $target eq 'tex') {
1.239 sakharuk 422: $text = '';
423: # $text = '%'.$text."\n";
1.182 sakharuk 424: }
1.190 albertel 425: $result.=$text;
1.101 albertel 426: }
1.261 albertel 427: } elsif (($token->[0] eq 'D')) {
428: if ($metamode<1 && $target eq 'web') {
429: my $text=$token->[1];
430: $result.=$text;
431: }
1.101 albertel 432: } elsif ($token->[0] eq 'PI') {
1.261 albertel 433: if ($metamode<1 && $target eq 'web') {
1.101 albertel 434: $result=$token->[2];
435: }
436: } elsif ($token->[0] eq 'S') {
1.140 albertel 437: # add tag to stack
1.101 albertel 438: push (@$stack,$token->[1]);
439: # add parameters list to another stack
440: push (@$parstack,&parstring($token));
1.140 albertel 441: &increasedepth($token);
1.212 albertel 442: if ($Apache::lonxml::usestyle &&
443: exists($$style_for_target{$token->[1]})) {
444: $Apache::lonxml::usestyle=0;
445: my $string=$$style_for_target{$token->[1]}.
446: '<LONCAPA_INTERNAL_TURN_STYLE_ON />';
447: &Apache::lonxml::newparser($pars,\$string);
1.257 albertel 448: $Apache::lonxml::style_values=$$parstack[-1];
1.259 albertel 449: $Apache::lonxml::style_end_values=$$parstack[-1];
1.101 albertel 450: } else {
451: $result = &callsub("start_$token->[1]", $target, $token, $stack,
452: $parstack, $pars, $safeeval, $style_for_target);
1.140 albertel 453: }
1.101 albertel 454: } elsif ($token->[0] eq 'E') {
1.212 albertel 455: if ($Apache::lonxml::usestyle &&
456: exists($$style_for_target{'/'."$token->[1]"})) {
457: $Apache::lonxml::usestyle=0;
458: my $string=$$style_for_target{'/'.$token->[1]}.
1.258 albertel 459: '<LONCAPA_INTERNAL_TURN_STYLE_ON end="'.$token->[1].'" />';
1.212 albertel 460: &Apache::lonxml::newparser($pars,\$string);
1.259 albertel 461: $Apache::lonxml::style_values=$Apache::lonxml::style_end_values;
462: $Apache::lonxml::style_end_values='';
1.258 albertel 463: $dontpop=1;
1.101 albertel 464: } else {
1.258 albertel 465: #clear out any tags that didn't end
466: while ($token->[1] ne $$stack['-1'] && ($#$stack > -1)) {
467: my $lasttag=$$stack[-1];
468: if ($token->[1] =~ /^$lasttag$/i) {
469: &Apache::lonxml::warning('Using tag </'.$token->[1].'> on line '.$token->[3].' as end tag to <'.$$stack[-1].'>');
470: last;
471: } else {
472: &Apache::lonxml::warning('Found tag </'.$token->[1].'> on line '.$token->[3].' when looking for </'.$$stack[-1].'> in file');
473: &end_tag($stack,$parstack,$token);
474: }
475: }
476: $result = &callsub("end_$token->[1]", $target, $token, $stack,
477: $parstack, $pars,$safeeval, $style_for_target);
1.101 albertel 478: }
479: } else {
480: &Apache::lonxml::error("Unknown token event :$token->[0]:$token->[1]:");
481: }
482: #evaluate variable refs in result
1.282 albertel 483: if ($Apache::lonxml::post_evaluate &&$result ne "") {
1.257 albertel 484: my $extras;
485: if (!$Apache::lonxml::usestyle) {
486: $extras=$Apache::lonxml::style_values;
487: }
1.101 albertel 488: if ( $#$parstack > -1 ) {
1.257 albertel 489: $result=&Apache::run::evaluate($result,$safeeval,$extras.$$parstack[-1]);
1.101 albertel 490: } else {
1.257 albertel 491: $result= &Apache::run::evaluate($result,$safeeval,$extras);
1.101 albertel 492: }
1.163 albertel 493: }
1.282 albertel 494: $Apache::lonxml::post_evaluate=1;
495:
1.190 albertel 496: if (($token->[0] eq 'T') || ($token->[0] eq 'C') || ($token->[0] eq 'D') ) {
1.249 albertel 497: #Style file definitions should be correct
1.250 albertel 498: if ($target eq 'tex' && ($Apache::lonxml::usestyle)) {
1.272 albertel 499: $result=&latex_special_symbols($result);
1.249 albertel 500: }
1.190 albertel 501: }
502:
1.169 albertel 503: # Encode any high ASCII characters
1.279 albertel 504: # if (!$Apache::lonxml::prevent_entity_encode) {
505: # $result=&HTML::Entities::encode($result,"\200-\377");
506: # }
1.169 albertel 507: if ($Apache::lonxml::redirection) {
508: $Apache::lonxml::outputstack['-1'] .= $result;
509: } else {
510: $finaloutput.=$result;
511: }
512: $result = '';
513:
1.258 albertel 514: if ($token->[0] eq 'E' && !$dontpop) {
1.101 albertel 515: &end_tag($stack,$parstack,$token);
516: }
1.258 albertel 517: $dontpop=0;
1.224 albertel 518: }
1.212 albertel 519: if ($#$pars > -1) {
520: pop @$pars;
521: pop @Apache::lonxml::pwd;
522: }
1.101 albertel 523: }
524:
525: # if ($target eq 'meta') {
526: # $finaloutput.=&endredirection;
527: # }
528:
1.169 albertel 529:
1.101 albertel 530: if (($ENV{'QUERY_STRING'}) && ($target eq 'web')) {
531: $finaloutput=&afterburn($finaloutput);
1.216 sakharuk 532: }
1.101 albertel 533: return $finaloutput;
534: }
1.67 www 535:
1.7 albertel 536: sub callsub {
1.84 albertel 537: my ($sub,$target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.7 albertel 538: my $currentstring='';
1.72 albertel 539: my $nodefault;
1.7 albertel 540: {
1.59 albertel 541: my $sub1;
1.7 albertel 542: no strict 'refs';
1.68 www 543: my $tag=$token->[1];
1.236 www 544: # get utterly rid of extended html tags
545: if ($tag=~/^x\-/i) { return ''; }
1.141 albertel 546: my $space=$Apache::lonxml::alltags{$tag}[-1];
1.68 www 547: if (!$space) {
1.141 albertel 548: $tag=~tr/A-Z/a-z/;
1.68 www 549: $sub=~tr/A-Z/a-z/;
1.141 albertel 550: $space=$Apache::lonxml::alltags{$tag}[-1]
1.68 www 551: }
1.97 albertel 552:
553: my $deleted=0;
554: $Apache::lonxml::curdepth=join('_',@Apache::lonxml::depthcounter);
555: if (($token->[0] eq 'S') && ($target eq 'modified')) {
556: $deleted=&Apache::edit::handle_delete($space,$target,$token,$tagstack,
557: $parstack,$parser,$safeeval,
558: $style);
559: }
560: if (!$deleted) {
561: if ($space) {
1.220 albertel 562: #&Apache::lonxml::debug("Calling sub $sub in $space $metamode");
1.97 albertel 563: $sub1="$space\:\:$sub";
564: ($currentstring,$nodefault) = &$sub1($target,$token,$tagstack,
565: $parstack,$parser,$safeeval,
566: $style);
567: } else {
1.220 albertel 568: #&Apache::lonxml::debug("NOT Calling sub $sub in $space $metamode");
1.97 albertel 569: if ($metamode <1) {
570: if (defined($token->[4]) && ($metamode < 1)) {
571: $currentstring = $token->[4];
572: } else {
573: $currentstring = $token->[2];
574: }
1.62 sakharuk 575: }
1.7 albertel 576: }
1.97 albertel 577: # &Apache::lonxml::debug("nodefalt:$nodefault:");
578: if ($currentstring eq '' && $nodefault eq '') {
579: if ($target eq 'edit') {
1.220 albertel 580: #&Apache::lonxml::debug("doing default edit for $token->[1]");
1.97 albertel 581: if ($token->[0] eq 'S') {
582: $currentstring = &Apache::edit::tag_start($target,$token);
583: } elsif ($token->[0] eq 'E') {
584: $currentstring = &Apache::edit::tag_end($target,$token);
585: }
586: } elsif ($target eq 'modified') {
587: if ($token->[0] eq 'S') {
588: $currentstring = $token->[4];
589: $currentstring.=&Apache::edit::handle_insert();
1.210 www 590: } elsif ($token->[0] eq 'E') {
591: $currentstring = $token->[2];
592: $currentstring.=&Apache::edit::handle_insertafter($token->[1]);
1.97 albertel 593: } else {
594: $currentstring = $token->[2];
595: }
1.72 albertel 596: }
597: }
1.7 albertel 598: }
599: use strict 'refs';
600: }
601: return $currentstring;
1.82 ng 602: }
603:
1.96 albertel 604: sub setup_globals {
1.172 albertel 605: my ($request,$target)=@_;
606: $Apache::lonxml::request=$request;
1.99 albertel 607: $Apache::lonxml::registered = 0;
1.205 www 608: $errorcount=0;
609: $warningcount=0;
1.207 albertel 610: $Apache::lonxml::default_homework_loaded=0;
1.212 albertel 611: $Apache::lonxml::usestyle=1;
1.204 albertel 612: &init_counter();
1.101 albertel 613: @Apache::lonxml::pwd=();
1.124 albertel 614: @Apache::lonxml::extlinks=();
1.281 albertel 615: @Apache::lonxml::ssi_info=();
1.282 albertel 616: $Apache::lonxml::post_evaluate=1;
1.96 albertel 617: if ($target eq 'meta') {
618: $Apache::lonxml::redirection = 0;
619: $Apache::lonxml::metamode = 1;
620: $Apache::lonxml::evaluate = 1;
621: $Apache::lonxml::import = 0;
1.129 albertel 622: } elsif ($target eq 'answer') {
623: $Apache::lonxml::redirection = 0;
624: $Apache::lonxml::metamode = 1;
625: $Apache::lonxml::evaluate = 1;
626: $Apache::lonxml::import = 1;
1.96 albertel 627: } elsif ($target eq 'grade') {
628: &startredirection;
629: $Apache::lonxml::metamode = 0;
630: $Apache::lonxml::evaluate = 1;
631: $Apache::lonxml::import = 1;
632: } elsif ($target eq 'modified') {
633: $Apache::lonxml::redirection = 0;
634: $Apache::lonxml::metamode = 0;
635: $Apache::lonxml::evaluate = 0;
636: $Apache::lonxml::import = 0;
637: } elsif ($target eq 'edit') {
638: $Apache::lonxml::redirection = 0;
639: $Apache::lonxml::metamode = 0;
640: $Apache::lonxml::evaluate = 0;
641: $Apache::lonxml::import = 0;
1.163 albertel 642: } elsif ($target eq 'analyze') {
643: $Apache::lonxml::redirection = 0;
644: $Apache::lonxml::metamode = 0;
645: $Apache::lonxml::evaluate = 1;
646: $Apache::lonxml::import = 1;
1.96 albertel 647: } else {
648: $Apache::lonxml::redirection = 0;
649: $Apache::lonxml::metamode = 0;
650: $Apache::lonxml::evaluate = 1;
651: $Apache::lonxml::import = 1;
652: }
653: }
654:
1.82 ng 655: sub init_safespace {
656: my ($target,$safeeval,$safehole,$safeinit) = @_;
657: $safeeval->permit("entereval");
658: $safeeval->permit(":base_math");
659: $safeeval->permit("sort");
660: $safeeval->deny(":base_io");
1.102 albertel 661: $safehole->wrap(\&Apache::scripttag::xmlparse,$safeeval,'&xmlparse');
1.251 albertel 662: $safehole->wrap(\&Apache::outputtags::multipart,$safeeval,'&multipart');
1.82 ng 663: $safehole->wrap(\&Apache::lonnet::EXT,$safeeval,'&EXT');
664:
665: $safehole->wrap(\&Math::Cephes::asin,$safeeval,'&asin');
666: $safehole->wrap(\&Math::Cephes::acos,$safeeval,'&acos');
667: $safehole->wrap(\&Math::Cephes::atan,$safeeval,'&atan');
668: $safehole->wrap(\&Math::Cephes::sinh,$safeeval,'&sinh');
669: $safehole->wrap(\&Math::Cephes::cosh,$safeeval,'&cosh');
670: $safehole->wrap(\&Math::Cephes::tanh,$safeeval,'&tanh');
671: $safehole->wrap(\&Math::Cephes::asinh,$safeeval,'&asinh');
672: $safehole->wrap(\&Math::Cephes::acosh,$safeeval,'&acosh');
673: $safehole->wrap(\&Math::Cephes::atanh,$safeeval,'&atanh');
674: $safehole->wrap(\&Math::Cephes::erf,$safeeval,'&erf');
675: $safehole->wrap(\&Math::Cephes::erfc,$safeeval,'&erfc');
676: $safehole->wrap(\&Math::Cephes::j0,$safeeval,'&j0');
677: $safehole->wrap(\&Math::Cephes::j1,$safeeval,'&j1');
678: $safehole->wrap(\&Math::Cephes::jn,$safeeval,'&jn');
679: $safehole->wrap(\&Math::Cephes::jv,$safeeval,'&jv');
680: $safehole->wrap(\&Math::Cephes::y0,$safeeval,'&y0');
681: $safehole->wrap(\&Math::Cephes::y1,$safeeval,'&y1');
682: $safehole->wrap(\&Math::Cephes::yn,$safeeval,'&yn');
683: $safehole->wrap(\&Math::Cephes::yv,$safeeval,'&yv');
1.215 albertel 684:
685: $safehole->wrap(\&Math::Cephes::bdtr ,$safeeval,'&bdtr' );
686: $safehole->wrap(\&Math::Cephes::bdtrc ,$safeeval,'&bdtrc' );
687: $safehole->wrap(\&Math::Cephes::bdtri ,$safeeval,'&bdtri' );
688: $safehole->wrap(\&Math::Cephes::btdtr ,$safeeval,'&btdtr' );
689: $safehole->wrap(\&Math::Cephes::chdtr ,$safeeval,'&chdtr' );
690: $safehole->wrap(\&Math::Cephes::chdtrc,$safeeval,'&chdtrc');
691: $safehole->wrap(\&Math::Cephes::chdtri,$safeeval,'&chdtri');
692: $safehole->wrap(\&Math::Cephes::fdtr ,$safeeval,'&fdtr' );
693: $safehole->wrap(\&Math::Cephes::fdtrc ,$safeeval,'&fdtrc' );
694: $safehole->wrap(\&Math::Cephes::fdtri ,$safeeval,'&fdtri' );
695: $safehole->wrap(\&Math::Cephes::gdtr ,$safeeval,'&gdtr' );
696: $safehole->wrap(\&Math::Cephes::gdtrc ,$safeeval,'&gdtrc' );
697: $safehole->wrap(\&Math::Cephes::nbdtr ,$safeeval,'&nbdtr' );
698: $safehole->wrap(\&Math::Cephes::nbdtrc,$safeeval,'&nbdtrc');
699: $safehole->wrap(\&Math::Cephes::nbdtri,$safeeval,'&nbdtri');
700: $safehole->wrap(\&Math::Cephes::ndtr ,$safeeval,'&ndtr' );
701: $safehole->wrap(\&Math::Cephes::ndtri ,$safeeval,'&ndtri' );
702: $safehole->wrap(\&Math::Cephes::pdtr ,$safeeval,'&pdtr' );
703: $safehole->wrap(\&Math::Cephes::pdtrc ,$safeeval,'&pdtrc' );
704: $safehole->wrap(\&Math::Cephes::pdtri ,$safeeval,'&pdtri' );
705: $safehole->wrap(\&Math::Cephes::stdtr ,$safeeval,'&stdtr' );
706: $safehole->wrap(\&Math::Cephes::stdtri,$safeeval,'&stdtri');
707:
708: # $safehole->wrap(\&Math::Cephes::new_fract,$safeeval,'&new_fract');
709: # $safehole->wrap(\&Math::Cephes::radd,$safeeval,'&radd');
710: # $safehole->wrap(\&Math::Cephes::rsub,$safeeval,'&rsub');
711: # $safehole->wrap(\&Math::Cephes::rmul,$safeeval,'&rmul');
712: # $safehole->wrap(\&Math::Cephes::rdiv,$safeeval,'&rdiv');
713: # $safehole->wrap(\&Math::Cephes::euclid,$safeeval,'&euclid');
714:
1.91 ng 715: $safehole->wrap(\&Math::Random::random_beta,$safeeval,'&math_random_beta');
716: $safehole->wrap(\&Math::Random::random_chi_square,$safeeval,'&math_random_chi_square');
717: $safehole->wrap(\&Math::Random::random_exponential,$safeeval,'&math_random_exponential');
718: $safehole->wrap(\&Math::Random::random_f,$safeeval,'&math_random_f');
719: $safehole->wrap(\&Math::Random::random_gamma,$safeeval,'&math_random_gamma');
720: $safehole->wrap(\&Math::Random::random_multivariate_normal,$safeeval,'&math_random_multivariate_normal');
721: $safehole->wrap(\&Math::Random::random_multinomial,$safeeval,'&math_random_multinomial');
722: $safehole->wrap(\&Math::Random::random_noncentral_chi_square,$safeeval,'&math_random_noncentral_chi_square');
723: $safehole->wrap(\&Math::Random::random_noncentral_f,$safeeval,'&math_random_noncentral_f');
724: $safehole->wrap(\&Math::Random::random_normal,$safeeval,'&math_random_normal');
725: $safehole->wrap(\&Math::Random::random_permutation,$safeeval,'&math_random_permutation');
1.93 ng 726: $safehole->wrap(\&Math::Random::random_permuted_index,$safeeval,'&math_random_permuted_index');
1.91 ng 727: $safehole->wrap(\&Math::Random::random_uniform,$safeeval,'&math_random_uniform');
728: $safehole->wrap(\&Math::Random::random_poisson,$safeeval,'&math_random_poisson');
729: $safehole->wrap(\&Math::Random::random_uniform_integer,$safeeval,'&math_random_uniform_integer');
730: $safehole->wrap(\&Math::Random::random_negative_binomial,$safeeval,'&math_random_negative_binomial');
731: $safehole->wrap(\&Math::Random::random_binomial,$safeeval,'&math_random_binomial');
732: $safehole->wrap(\&Math::Random::random_seed_from_phrase,$safeeval,'&random_seed_from_phrase');
733: $safehole->wrap(\&Math::Random::random_set_seed_from_phrase,$safeeval,'&random_set_seed_from_phrase');
734: $safehole->wrap(\&Math::Random::random_get_seed,$safeeval,'&random_get_seed');
735: $safehole->wrap(\&Math::Random::random_set_seed,$safeeval,'&random_set_seed');
736:
1.82 ng 737: #need to inspect this class of ops
738: # $safeeval->deny(":base_orig");
1.91 ng 739: $safeinit .= ';$external::target="'.$target.'";';
1.121 albertel 740: my $rndseed;
1.123 albertel 741: my ($symb,$courseid,$domain,$name) = &Apache::lonxml::whichuser();
742: $rndseed=&Apache::lonnet::rndseed($symb,$courseid,$domain,$name);
1.121 albertel 743: $safeinit .= ';$external::randomseed='.$rndseed.';';
1.249 albertel 744: &Apache::lonxml::debug("Setting rndseed to $rndseed");
1.82 ng 745: &Apache::run::run($safeinit,$safeeval);
1.207 albertel 746: }
747:
748: sub default_homework_load {
749: my ($safeeval)=@_;
750: &Apache::lonxml::debug('Loading default_homework');
751: my $default=&Apache::lonnet::getfile('/home/httpd/html/res/adm/includes/default_homework.lcpm');
1.241 albertel 752: if ($default eq -1) {
1.207 albertel 753: &Apache::lonxml::error("<b>Unable to find <i>default_homework.lcpm</i></b>");
754: } else {
755: &Apache::run::run($default,$safeeval);
756: $Apache::lonxml::default_homework_loaded=1;
757: }
1.17 albertel 758: }
759:
1.55 albertel 760: sub startredirection {
761: $Apache::lonxml::redirection++;
762: push (@Apache::lonxml::outputstack, '');
763: }
764:
765: sub endredirection {
766: if (!$Apache::lonxml::redirection) {
1.72 albertel 767: &Apache::lonxml::error("Endredirection was called, before a startredirection, perhaps you have unbalanced tags. Some debuging information:".join ":",caller);
1.55 albertel 768: return '';
769: }
770: $Apache::lonxml::redirection--;
771: pop @Apache::lonxml::outputstack;
1.97 albertel 772: }
773:
774: sub end_tag {
775: my ($tagstack,$parstack,$token)=@_;
776: pop(@$tagstack);
777: pop(@$parstack);
778: &decreasedepth($token);
1.55 albertel 779: }
780:
1.17 albertel 781: sub initdepth {
782: @Apache::lonxml::depthcounter=();
783: $Apache::lonxml::depth=-1;
784: $Apache::lonxml::olddepth=-1;
785: }
786:
787: sub increasedepth {
1.19 albertel 788: my ($token) = @_;
1.17 albertel 789: $Apache::lonxml::depth++;
790: $Apache::lonxml::depthcounter[$Apache::lonxml::depth]++;
791: if ($Apache::lonxml::depthcounter[$Apache::lonxml::depth]==1) {
792: $Apache::lonxml::olddepth=$Apache::lonxml::depth;
793: }
1.42 albertel 794: my $curdepth=join('_',@Apache::lonxml::depthcounter);
1.64 albertel 795: &Apache::lonxml::debug("s $Apache::lonxml::depth : $Apache::lonxml::olddepth : $curdepth : $token->[1]\n");
1.54 albertel 796: #print "<br />s $Apache::lonxml::depth : $Apache::lonxml::olddepth : $curdepth : $token->[1]\n";
1.17 albertel 797: }
798:
799: sub decreasedepth {
1.19 albertel 800: my ($token) = @_;
1.17 albertel 801: $Apache::lonxml::depth--;
1.36 albertel 802: if ($Apache::lonxml::depth<$Apache::lonxml::olddepth-1) {
803: $#Apache::lonxml::depthcounter--;
804: $Apache::lonxml::olddepth=$Apache::lonxml::depth+1;
805: }
1.43 albertel 806: if ( $Apache::lonxml::depth < -1) {
1.280 www 807: &Apache::lonxml::warning(&mt("Missing tags, unable to properly run file."));
1.43 albertel 808: $Apache::lonxml::depth='-1';
809: }
1.42 albertel 810: my $curdepth=join('_',@Apache::lonxml::depthcounter);
1.64 albertel 811: &Apache::lonxml::debug("e $Apache::lonxml::depth : $Apache::lonxml::olddepth : $token->[1] : $curdepth\n");
1.54 albertel 812: #print "<br />e $Apache::lonxml::depth : $Apache::lonxml::olddepth : $token->[1] : $curdepth\n";
1.1 sakharuk 813: }
1.19 albertel 814:
1.180 albertel 815: sub get_all_text_unbalanced {
1.190 albertel 816: #there is a copy of this in lonpublisher.pm
1.180 albertel 817: my($tag,$pars)= @_;
818: my $token;
819: my $result='';
820: $tag='<'.$tag.'>';
821: while ($token = $$pars[-1]->get_token) {
822: if (($token->[0] eq 'T')||($token->[0] eq 'C')||($token->[0] eq 'D')) {
823: $result.=$token->[1];
824: } elsif ($token->[0] eq 'PI') {
825: $result.=$token->[2];
826: } elsif ($token->[0] eq 'S') {
827: $result.=$token->[4];
828: } elsif ($token->[0] eq 'E') {
829: $result.=$token->[2];
830: }
1.211 albertel 831: if ($result =~ /(.*)\Q$tag\E(.*)/s) {
1.180 albertel 832: &Apache::lonxml::debug('Got a winner with leftovers ::'.$2);
833: &Apache::lonxml::debug('Result is :'.$1);
834: $result=$1;
835: my $redo=$tag.$2;
836: &Apache::lonxml::newparser($pars,\$redo);
837: last;
838: }
839: }
840: return $result
1.204 albertel 841: }
842:
843: sub increment_counter {
1.247 albertel 844: my ($increment) = @_;
845: if (defined($increment) && $increment gt 0) {
846: $Apache::lonxml::counter+=$increment;
847: } else {
848: $Apache::lonxml::counter++;
849: }
1.204 albertel 850: $Apache::lonxml::counter_changed=1;
851: }
852:
853: sub init_counter {
854: if (defined($ENV{'form.counter'})) {
855: $Apache::lonxml::counter=$ENV{'form.counter'};
1.247 albertel 856: $Apache::lonxml::counter_changed=0;
1.237 sakharuk 857: } else {
1.204 albertel 858: $Apache::lonxml::counter=1;
1.247 albertel 859: $Apache::lonxml::counter_changed=1;
1.204 albertel 860: }
861: }
862:
863: sub store_counter {
864: &Apache::lonnet::appenv(('form.counter' => $Apache::lonxml::counter));
865: return '';
1.180 albertel 866: }
867:
1.19 albertel 868: sub get_all_text {
1.270 albertel 869: my($tag,$pars,$style)= @_;
870: my $gotfullstack=1;
871: if (ref($pars) ne 'ARRAY') {
872: $gotfullstack=0;
873: $pars=[$pars];
874: }
875: if (ref($style) ne 'HASH') {
876: $style={};
877: }
878: my $depth=0;
879: my $token;
880: my $result='';
881: if ( $tag =~ m:^/: ) {
882: my $tag=substr($tag,1);
883: #&Apache::lonxml::debug("have:$tag:");
884: my $top_empty=0;
885: while (($depth >=0) && ($#$pars > -1) && (!$top_empty)) {
886: while (($depth >=0) && ($token = $$pars[-1]->get_token)) {
887: #&Apache::lonxml::debug("e token:$token->[0]:$depth:$token->[1]:".$#$pars.":".$#Apache::lonxml::pwd);
888: if (($token->[0] eq 'T')||($token->[0] eq 'C')||($token->[0] eq 'D')) {
889: $result.=$token->[1];
890: } elsif ($token->[0] eq 'PI') {
891: $result.=$token->[2];
892: } elsif ($token->[0] eq 'S') {
893: if ($token->[1] =~ /^$tag$/i) { $depth++; }
894: if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_ON$/i) { $Apache::lonxml::usestyle=1; }
895: if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_OFF$/i) { $Apache::lonxml::usestyle=0; }
896: $result.=$token->[4];
897: } elsif ($token->[0] eq 'E') {
898: if ( $token->[1] =~ /^$tag$/i) { $depth--; }
899: #skip sending back the last end tag
1.283 albertel 900: if ($depth == 0 && exists($$style{'/'.$token->[1]}) && $Apache::lonxml::usestyle) {
1.270 albertel 901: my $string=
902: '<LONCAPA_INTERNAL_TURN_STYLE_OFF end="yes" />'.
903: $$style{'/'.$token->[1]}.
904: $token->[2].
905: '<LONCAPA_INTERNAL_TURN_STYLE_ON />';
906: &Apache::lonxml::newparser($pars,\$string);
907: #&Apache::lonxml::debug("reParsing $string");
908: next;
909: }
910: if ($depth > -1) {
911: $result.=$token->[2];
912: } else {
913: $$pars[-1]->unget_token($token);
914: }
915: }
916: }
917: if (($depth >=0) && ($#$pars == 0) ) { $top_empty=1; }
918: if (($depth >=0) && ($#$pars > 0) ) {
919: pop(@$pars);
920: pop(@Apache::lonxml::pwd);
921: }
922: }
923: if ($top_empty && $depth >= 0) {
924: #never found the end tag ran out of text, throw error send back blank
925: &error('Never found end tag for <'.$tag.
926: '> current string <pre>'.
927: &HTML::Entities::encode($result).
928: '</pre>');
929: if ($gotfullstack) {
930: my $newstring='</'.$tag.'>'.$result;
931: &Apache::lonxml::newparser($pars,\$newstring);
932: }
933: $result='';
934: }
935: } else {
936: while ($#$pars > -1) {
937: while ($token = $$pars[-1]->get_token) {
938: #&Apache::lonxml::debug("s token:$token->[0]:$depth:$token->[1]");
939: if (($token->[0] eq 'T')||($token->[0] eq 'C')||
940: ($token->[0] eq 'D')) {
941: $result.=$token->[1];
942: } elsif ($token->[0] eq 'PI') {
943: $result.=$token->[2];
944: } elsif ($token->[0] eq 'S') {
945: if ( $token->[1] =~ /^$tag$/i) {
946: $$pars[-1]->unget_token($token); last;
947: } else {
948: $result.=$token->[4];
949: }
950: if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_ON$/i) { $Apache::lonxml::usestyle=1; }
951: if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_OFF$/i) { $Apache::lonxml::usestyle=0; }
952: } elsif ($token->[0] eq 'E') {
953: $result.=$token->[2];
954: }
955: }
956: if (($#$pars > 0) ) {
957: pop(@$pars);
958: pop(@Apache::lonxml::pwd);
959: } else { last; }
960: }
961: }
962: #&Apache::lonxml::debug("Exit:$result:");
963: return $result
1.19 albertel 964: }
965:
1.23 albertel 966: sub newparser {
967: my ($parser,$contentref,$dir) = @_;
1.167 albertel 968: push (@$parser,HTML::LCParser->new($contentref));
1.56 albertel 969: $$parser['-1']->xml_mode('1');
1.23 albertel 970: if ( $dir eq '' ) {
971: push (@Apache::lonxml::pwd, $Apache::lonxml::pwd[$#Apache::lonxml::pwd]);
972: } else {
973: push (@Apache::lonxml::pwd, $dir);
974: }
975: }
1.1 sakharuk 976:
1.8 albertel 977: sub parstring {
978: my ($token) = @_;
979: my $temp='';
1.142 albertel 980: foreach (@{$token->[3]}) {
1.35 www 981: unless ($_=~/\W/) {
1.42 albertel 982: my $val=$token->[2]->{$_};
1.231 albertel 983: $val =~ s/([\%\@\\\"\'])/\\$1/g;
1.51 albertel 984: #if ($val =~ m/^[\%\@]/) { $val="\\".$val; }
1.267 sakharuk 985: $temp .= "my \$$_=\"$val\";";
1.20 albertel 986: }
1.142 albertel 987: }
1.8 albertel 988: return $temp;
989: }
1.22 albertel 990:
1.34 www 991: sub writeallows {
1.126 www 992: unless ($#extlinks>=0) { return; }
1.34 www 993: my $thisurl='/res/'.&Apache::lonnet::declutter(shift);
1.111 www 994: if ($ENV{'httpref.'.$thisurl}) {
995: $thisurl=$ENV{'httpref.'.$thisurl};
996: }
1.34 www 997: my $thisdir=$thisurl;
998: $thisdir=~s/\/[^\/]+$//;
999: my %httpref=();
1.142 albertel 1000: foreach (@extlinks) {
1.34 www 1001: $httpref{'httpref.'.
1.125 www 1002: &Apache::lonnet::hreflocation($thisdir,$_)}=$thisurl;
1.142 albertel 1003: }
1.126 www 1004: @extlinks=();
1.34 www 1005: &Apache::lonnet::appenv(%httpref);
1006: }
1007:
1.281 albertel 1008: sub register_ssi {
1009: my ($url,%form)=@_;
1010: push (@Apache::lonxml::ssi_info,{'url'=>$url,'form'=>\%form});
1011: return '';
1012: }
1013:
1014: sub do_registered_ssi {
1015: foreach my $info (@Apache::lonxml::ssi_info) {
1016: my %form=%{ $info->{'form'}};
1017: my $url=$info->{'url'};
1018: &Apache::lonnet::ssi($url,%form);
1019: }
1020: }
1.66 www 1021: #
1022: # Afterburner handles anchors, highlights and links
1023: #
1024: sub afterburn {
1025: my $result=shift;
1.154 albertel 1026: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
1027: ['highlight','anchor','link']);
1.66 www 1028: if ($ENV{'form.highlight'}) {
1.142 albertel 1029: foreach (split(/\,/,$ENV{'form.highlight'})) {
1.66 www 1030: my $anchorname=$_;
1031: my $matchthis=$anchorname;
1032: $matchthis=~s/\_+/\\s\+/g;
1033: $result=~s/($matchthis)/\<font color=\"red\"\>$1\<\/font\>/gs;
1.142 albertel 1034: }
1.66 www 1035: }
1036: if ($ENV{'form.link'}) {
1.142 albertel 1037: foreach (split(/\,/,$ENV{'form.link'})) {
1.66 www 1038: my ($anchorname,$linkurl)=split(/\>/,$_);
1039: my $matchthis=$anchorname;
1040: $matchthis=~s/\_+/\\s\+/g;
1041: $result=~s/($matchthis)/\<a href=\"$linkurl\"\>$1\<\/a\>/gs;
1.142 albertel 1042: }
1.66 www 1043: }
1044: if ($ENV{'form.anchor'}) {
1045: my $anchorname=$ENV{'form.anchor'};
1046: my $matchthis=$anchorname;
1047: $matchthis=~s/\_+/\\s\+/g;
1048: $result=~s/($matchthis)/\<a name=\"$anchorname\"\>$1\<\/a\>/s;
1049: $result.=(<<"ENDSCRIPT");
1.226 albertel 1050: <script type="text/javascript">
1.66 www 1051: document.location.hash='$anchorname';
1052: </script>
1053: ENDSCRIPT
1054: }
1055: return $result;
1056: }
1057:
1.79 www 1058: sub storefile {
1059: my ($file,$contents)=@_;
1060: if (my $fh=Apache::File->new('>'.$file)) {
1061: print $fh $contents;
1062: $fh->close();
1.271 www 1063: return 1;
1.147 albertel 1064: } else {
1.271 www 1065: &warning("Unable to save file $file");
1066: return 0;
1.79 www 1067: }
1068: }
1069:
1.151 albertel 1070: sub createnewhtml {
1071: my $filecontents=(<<SIMPLECONTENT);
1.78 www 1072: <html>
1073: <head>
1074: <title>
1075: Title of Document Goes Here
1076: </title>
1077: </head>
1078: <body bgcolor="#FFFFFF">
1079:
1080: Body of Document Goes Here
1081:
1082: </body>
1083: </html>
1084: SIMPLECONTENT
1.151 albertel 1085: return $filecontents;
1086: }
1087:
1.274 albertel 1088: sub createnewsty {
1089: my $filecontents=(<<SIMPLECONTENT);
1090: <definetag name="">
1091: <render>
1092: <web></web>
1093: <tex></tex>
1094: </render>
1095: </definetag>
1096: SIMPLECONTENT
1097: return $filecontents;
1098: }
1099:
1.147 albertel 1100:
1.151 albertel 1101: sub inserteditinfo {
1.274 albertel 1102: my ($result,$filecontents,$filetype)=@_;
1.157 albertel 1103: $filecontents = &HTML::Entities::encode($filecontents);
1.147 albertel 1104: # my $editheader='<a href="#editsection">Edit below</a><hr />';
1.274 albertel 1105: my $xml_help = '';
1106: if ($filetype eq 'html') {
1107: $xml_help=Apache::loncommon::helpLatexCheatsheet();
1108: }
1109: my $cleanbut = '';
1110: if ($filetype eq 'html') {
1.280 www 1111: $cleanbut='<input type="submit" name="attemptclean" value="'.
1112: &mt('Save and then attempt to clean HTML').'" />';
1.274 albertel 1113: }
1.254 albertel 1114: my $titledisplay=&display_title();
1.280 www 1115: my %lt=&Apache::lonlocal::texthash('st' => 'Save this',
1116: 'vi' => 'View',
1117: 'ed' => 'Edit');
1.161 albertel 1118: my $buttons=(<<BUTTONS);
1.274 albertel 1119: $cleanbut
1.280 www 1120: <input type="submit" name="savethisfile" value="$lt{'st'}" />
1121: <input type="submit" name="viewmode" value="$lt{'vi'}" />
1.161 albertel 1122: BUTTONS
1.78 www 1123: my $editfooter=(<<ENDFOOTER);
1124: <hr />
1125: <a name="editsection" />
1126: <form method="post">
1.240 albertel 1127: $xml_help
1.280 www 1128: <input type="hidden" name="editmode" value="$lt{'ed'}" />
1.170 www 1129: $buttons<br />
1.78 www 1130: <textarea cols="80" rows="40" name="filecont">$filecontents</textarea>
1.170 www 1131: <br />$buttons
1.78 www 1132: <br />
1133: </form>
1.254 albertel 1134: $titledisplay
1.78 www 1135: ENDFOOTER
1.147 albertel 1136: # $result=~s/(\<body[^\>]*\>)/$1$editheader/is;
1.78 www 1137: $result=~s/(\<\/body\>)/$editfooter/is;
1138: return $result;
1139: }
1140:
1.152 albertel 1141: sub get_target {
1142: my $viewgrades=&Apache::lonnet::allowed('vgr',$ENV{'request.course.id'});
1143: if ( $ENV{'request.state'} eq 'published') {
1144: if ( defined($ENV{'form.grade_target'})
1145: && ($viewgrades == 'F' )) {
1146: return ($ENV{'form.grade_target'});
1.153 albertel 1147: } elsif (defined($ENV{'form.grade_target'})) {
1148: if (($ENV{'form.grade_target'} eq 'web') ||
1149: ($ENV{'form.grade_target'} eq 'tex') ) {
1150: return $ENV{'form.grade_target'}
1151: } else {
1152: return 'web';
1153: }
1.152 albertel 1154: } else {
1155: return 'web';
1156: }
1157: } elsif ($ENV{'request.state'} eq 'construct') {
1158: if ( defined($ENV{'form.grade_target'})) {
1159: return ($ENV{'form.grade_target'});
1160: } else {
1161: return 'web';
1162: }
1163: } else {
1164: return 'web';
1165: }
1166: }
1167:
1.24 sakharuk 1168: sub handler {
1.255 sakharuk 1169: my $request=shift;
1170:
1171: my $target=&get_target();
1172:
1.258 albertel 1173: $Apache::lonxml::debug=$ENV{'user.debug'};
1.255 sakharuk 1174:
1175: if ($ENV{'browser.mathml'}) {
1.280 www 1176: &Apache::loncommon::content_type($request,'text/xml');
1.255 sakharuk 1177: } else {
1.280 www 1178: &Apache::loncommon::content_type($request,'text/html');
1.255 sakharuk 1179: }
1180: &Apache::loncommon::no_cache($request);
1181: $request->send_http_header;
1182:
1183: return OK if $request->header_only;
1.68 www 1184:
1185:
1.255 sakharuk 1186: my $file=&Apache::lonnet::filelocation("",$request->uri);
1.274 albertel 1187: my $filetype;
1188: if ($file =~ /\.sty$/) {
1189: $filetype='sty';
1190: } else {
1191: $filetype='html';
1192: }
1.78 www 1193: #
1194: # Edit action? Save file.
1195: #
1.255 sakharuk 1196: unless ($ENV{'request.state'} eq 'published') {
1197: if (($ENV{'form.savethisfile'}) || ($ENV{'form.attemptclean'})) {
1.271 www 1198: if (&storefile($file,$ENV{'form.filecont'})) {
1.284 ! www 1199: $request->print("<font COLOR=\"#0000FF\">".&mt('Updated').": ".
! 1200: &Apache::lonlocal::locallocaltime(time)." </font>");
1.271 www 1201: }
1.255 sakharuk 1202: }
1203: }
1204: my %mystyle;
1205: my $result = '';
1206: my $filecontents=&Apache::lonnet::getfile($file);
1207: if ($filecontents eq -1) {
1.284 ! www 1208: my $bodytag=&Apache::loncommon::bodytag('File Error');
! 1209: my $fnf=&mt('File not found');
1.255 sakharuk 1210: $result=(<<ENDNOTFOUND);
1.78 www 1211: <html>
1212: <head>
1.284 ! www 1213: <title>$fnf</title>
1.78 www 1214: </head>
1.284 ! www 1215: $bodytag
! 1216: <b>$fnf: $file</b>
1.78 www 1217: </body>
1218: </html>
1219: ENDNOTFOUND
1.50 albertel 1220: $filecontents='';
1.255 sakharuk 1221: if ($ENV{'request.state'} ne 'published') {
1.274 albertel 1222: if ($filetype eq 'sty') {
1223: $filecontents=&createnewsty();
1224: } else {
1225: $filecontents=&createnewhtml();
1226: }
1.255 sakharuk 1227: $ENV{'form.editmode'}='Edit'; #force edit mode
1228: }
1229: } else {
1230: unless ($ENV{'request.state'} eq 'published') {
1231: if ($ENV{'form.attemptclean'}) {
1232: $filecontents=&htmlclean($filecontents,1);
1233: }
1.264 www 1234: #
1235: # we are in construction space, see if edit mode forced
1236: &Apache::loncommon::get_unprocessed_cgi
1237: ($ENV{'QUERY_STRING'},['editmode']);
1.255 sakharuk 1238: }
1239: if (!$ENV{'form.editmode'} || $ENV{'form.viewmode'}) {
1240: $result = &Apache::lonxml::xmlparse($request,$target,$filecontents,
1241: '',%mystyle);
1242: }
1.147 albertel 1243: }
1.255 sakharuk 1244:
1.78 www 1245: #
1246: # Edit action? Insert editing commands
1247: #
1.255 sakharuk 1248: unless ($ENV{'request.state'} eq 'published') {
1249: if ($ENV{'form.editmode'} && (!($ENV{'form.viewmode'}))) {
1250: my $displayfile=$request->uri;
1251: $displayfile=~s/^\/[^\/]*//;
1252: $result='<html><body bgcolor="#FFFFFF"><h3>'.$displayfile.
1253: '</h3></body></html>';
1.274 albertel 1254: $result=&inserteditinfo($result,$filecontents,$filetype);
1.255 sakharuk 1255: }
1.147 albertel 1256: }
1.274 albertel 1257: if ($filetype eq 'html') { writeallows($request->uri); }
1258:
1.255 sakharuk 1259:
1260:
1261: $request->print($result);
1262:
1263: return OK;
1.253 albertel 1264: }
1265:
1266: sub display_title {
1267: my $result;
1268: if ($ENV{'request.state'} eq 'construct') {
1269: my $title=&Apache::lonnet::gettitle();
1270: if (!defined($title) || $title eq '') {
1271: $title = $ENV{'request.filename'};
1272: $title = substr($title, rindex($title, '/') + 1);
1273: }
1274: $result = "<script type='text/javascript'>top.document.title = '$title - LON-CAPA Construction Space';</script>";
1275: }
1276: return $result;
1.24 sakharuk 1277: }
1.147 albertel 1278:
1.22 albertel 1279: sub debug {
1280: if ($Apache::lonxml::debug eq 1) {
1.146 albertel 1281: $|=1;
1.202 albertel 1282: print('<font size="-2"<pre>DEBUG:'.&HTML::Entities::encode($_[0])."</pre></font>\n");
1.22 albertel 1283: }
1284: }
1.49 albertel 1285:
1.22 albertel 1286: sub error {
1.205 www 1287: $errorcount++;
1.74 albertel 1288: if (($Apache::lonxml::debug eq 1) || ($ENV{'request.state'} eq 'construct') ) {
1.166 matthew 1289: # If printing in construction space, put the error inside <pre></pre>
1.167 albertel 1290: print "<b>ERROR:</b>".join("\n",@_)."\n";
1.52 albertel 1291: } else {
1292: print "<b>An Error occured while processing this resource. The instructor has been notified.</b> <br />";
1293: #notify author
1.146 albertel 1294: &Apache::lonmsg::author_res_msg($ENV{'request.filename'},join('<br />',@_));
1.52 albertel 1295: #notify course
1296: if ( $ENV{'request.course.id'} ) {
1.209 www 1297: my (undef,%users)=&Apache::lonfeedback::decide_receiver(undef,0,1,1,1);
1.143 www 1298: my $declutter=&Apache::lonnet::declutter($ENV{'request.filename'});
1.209 www 1299: foreach (keys %users) {
1300: my ($user,$domain) = split(/:/, $_);
1.143 www 1301: &Apache::lonmsg::user_normal_msg($user,$domain,
1.146 albertel 1302: "Error [$declutter]",join('<br />',@_));
1.52 albertel 1303: }
1304: }
1.74 albertel 1305:
1.52 albertel 1306: #FIXME probably shouldn't have me get everything forever.
1.146 albertel 1307: &Apache::lonmsg::user_normal_msg('albertel','msu',"Error in $ENV{'request.filename'}",join('<br />',@_));
1.74 albertel 1308: #&Apache::lonmsg::user_normal_msg('albertel','103',"Error in $ENV{'request.filename'}",$_[0]);
1.52 albertel 1309: }
1.22 albertel 1310: }
1.49 albertel 1311:
1.22 albertel 1312: sub warning {
1.205 www 1313: $warningcount++;
1.261 albertel 1314:
1315: if ($ENV{'form.grade_target'} ne 'tex') {
1316: if ($ENV{'request.state'} eq 'construct' || $Apache::lonxml::debug) {
1317: print "<b>W</b>ARNING<b>:</b>".join('<br />',@_)."<br />\n";
1318: }
1.73 harris41 1319: }
1.83 albertel 1320: }
1321:
1322: sub get_param {
1.213 albertel 1323: my ($param,$parstack,$safeeval,$context,$case_insensitive) = @_;
1324: if ( ! $context ) { $context = -1; }
1325: my $args ='';
1326: if ( $#$parstack > (-2-$context) ) { $args=$$parstack[$context]; }
1327: if ( ! $args ) { return undef; }
1328: if ( $case_insensitive ) {
1329: if ($args =~ s/(my \$)(\Q$param\E)(=\")/$1.lc($2).$3/ei) {
1330: return &Apache::run::run("{$args;".'return $'.$param.'}',
1331: $safeeval); #'
1332: } else {
1333: return undef;
1334: }
1335: } else {
1336: if ( $args =~ /my \$\Q$param\E=\"/ ) {
1337: return &Apache::run::run("{$args;".'return $'.$param.'}',
1338: $safeeval); #'
1339: } else {
1340: return undef;
1341: }
1342: }
1.22 albertel 1343: }
1344:
1.132 albertel 1345: sub get_param_var {
1.213 albertel 1346: my ($param,$parstack,$safeeval,$context,$case_insensitive) = @_;
1.132 albertel 1347: if ( ! $context ) { $context = -1; }
1348: my $args ='';
1349: if ( $#$parstack > (-2-$context) ) { $args=$$parstack[$context]; }
1.230 albertel 1350: &Apache::lonxml::debug("Args are $args param is $param");
1.213 albertel 1351: if ($case_insensitive) {
1352: if (! ($args=~s/(my \$)(\Q$param\E)(=\")/$1.lc($2).$3/ei)) {
1353: return undef;
1354: }
1355: } elsif ( $args !~ /my \$\Q$param\E=\"/ ) { return undef; }
1.132 albertel 1356: my $value=&Apache::run::run("{$args;".'return $'.$param.'}',$safeeval); #'
1.230 albertel 1357: &Apache::lonxml::debug("first run is $value");
1358: if ($value =~ /^[\$\@\%]\w+$/) {
1359: &Apache::lonxml::debug("doing second");
1360: my @result=&Apache::run::run("return $value",$safeeval,1);
1361: if (!defined($result[0])) {
1362: return $value
1363: } else {
1364: if (wantarray) { return @result; } else { return $result[0]; }
1365: }
1.132 albertel 1366: } else {
1367: return $value;
1368: }
1369: }
1370:
1.74 albertel 1371: sub register_insert {
1.75 albertel 1372: my @data = split /\n/, &Apache::lonnet::getfile('/home/httpd/lonTabs/insertlist.tab');
1.74 albertel 1373: my $i;
1.76 albertel 1374: my $tagnum=0;
1.74 albertel 1375: my @order;
1376: for ($i=0;$i < $#data; $i++) {
1377: my $line = $data[$i];
1378: if ( $line =~ /^\#/ || $line =~ /^\s*\n/) { next; }
1379: if ( $line =~ /TABLE/ ) { last; }
1.268 bowersj2 1380: my ($tag,$descrip,$color,$function,$show,$helpfile,$helpdesc) = split(/,/, $line);
1.135 albertel 1381: if ($tag) {
1382: $insertlist{"$tagnum.tag"} = $tag;
1383: $insertlist{"$tagnum.description"} = $descrip;
1384: $insertlist{"$tagnum.color"} = $color;
1385: $insertlist{"$tagnum.function"} = $function;
1386: if (!defined($show)) { $show='yes'; }
1387: $insertlist{"$tagnum.show"}= $show;
1.268 bowersj2 1388: $insertlist{"$tagnum.helpfile"} = $helpfile;
1389: $insertlist{"$tagnum.helpdesc"} = $helpdesc;
1.135 albertel 1390: $insertlist{"$tag.num"}=$tagnum;
1391: $tagnum++;
1392: }
1.74 albertel 1393: }
1.76 albertel 1394: $i++; #skipping TABLE line
1395: $tagnum = 0;
1.74 albertel 1396: for (;$i < $#data;$i++) {
1397: my $line = $data[$i];
1.76 albertel 1398: my ($mnemonic,@which) = split(/ +/,$line);
1399: my $tag = $insertlist{"$tagnum.tag"};
1.144 matthew 1400: for (my $j=0;$j <=$#which;$j++) {
1.74 albertel 1401: if ( $which[$j] eq 'Y' ) {
1.76 albertel 1402: if ($insertlist{"$j.show"} ne 'no') {
1403: push(@{ $insertlist{"$tag.which"} },$j);
1404: }
1.74 albertel 1405: }
1406: }
1.76 albertel 1407: $tagnum++;
1.74 albertel 1408: }
1409: }
1.98 albertel 1410:
1411: sub description {
1412: my ($token)=@_;
1.138 albertel 1413: my $tagnum;
1414: my $tag=$token->[1];
1415: foreach my $namespace (reverse @Apache::lonxml::namespace) {
1416: my $testtag=$namespace.'::'.$tag;
1417: $tagnum=$insertlist{"$testtag.num"};
1418: if (defined($tagnum)) { last; }
1419: }
1420: if (!defined ($tagnum)) { $tagnum=$Apache::lonxml::insertlist{"$tag.num"}; }
1421: return $insertlist{$tagnum.'.description'};
1.268 bowersj2 1422: }
1423:
1424: # Returns a list containing the help file, and the description
1425: sub helpinfo {
1426: my ($token)=@_;
1427: my $tagnum;
1428: my $tag=$token->[1];
1429: foreach my $namespace (reverse @Apache::lonxml::namespace) {
1430: my $testtag=$namespace.'::'.$tag;
1431: $tagnum=$insertlist{"$testtag.num"};
1432: if (defined($tagnum)) { last; }
1433: }
1434: if (!defined ($tagnum)) { $tagnum=$Apache::lonxml::insertlist{"$tag.num"}; }
1435: return ($insertlist{$tagnum.'.helpfile'}, $insertlist{$tagnum.'.helpdesc'});
1.98 albertel 1436: }
1.123 albertel 1437:
1438: # ----------------------------------------------------------------- whichuser
1439: # returns a list of $symb, $courseid, $domain, $name that is correct for
1440: # calls to lonnet functions for this setup.
1441: # - looks for form.grade_ parameters
1442: sub whichuser {
1.262 matthew 1443: my ($passedsymb)=@_;
1.245 albertel 1444: my ($symb,$courseid,$domain,$name,$publicuser);
1.123 albertel 1445: if (defined($ENV{'form.grade_symb'})) {
1446: my $tmp_courseid=$ENV{'form.grade_courseid'};
1.269 albertel 1447: my $allowed=&Apache::lonnet::allowed('vgr',$tmp_courseid);
1.123 albertel 1448: if ($allowed) {
1449: $symb=$ENV{'form.grade_symb'};
1450: $courseid=$ENV{'form.grade_courseid'};
1451: $domain=$ENV{'form.grade_domain'};
1452: $name=$ENV{'form.grade_username'};
1453: }
1.134 albertel 1454: } else {
1.262 matthew 1455: if (!$passedsymb) {
1456: $symb=&Apache::lonnet::symbread();
1457: } else {
1458: $symb=$passedsymb;
1459: }
1.244 albertel 1460: $courseid=$ENV{'request.course.id'};
1461: $domain=$ENV{'user.domain'};
1462: $name=$ENV{'user.name'};
1463: if ($name eq 'public' && $domain eq 'public') {
1464: if (!defined($ENV{'form.username'})) {
1465: $ENV{'form.username'}.=time.rand(10000000);
1466: }
1467: $name.=$ENV{'form.username'};
1468: }
1.123 albertel 1469: }
1.245 albertel 1470: return ($symb,$courseid,$domain,$name,$publicuser);
1.123 albertel 1471: }
1472:
1.1 sakharuk 1473: 1;
1474: __END__
1.68 www 1475:
1476:
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