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=$$stack[-1];
                    532: 	  if ($token->[1] =~ /^$lasttag$/i) {
1.244     albertel  533: 	    &Apache::lonxml::warning('Using tag &lt;/'.$token->[1].'&gt; on line '.$token->[3].' as end tag to &lt;'.$$stack[-1].'&gt;');
1.150     albertel  534: 	    last;
                    535: 	  } else {
1.244     albertel  536: 	    &Apache::lonxml::warning('Found tag &lt;/'.$token->[1].'&gt; on line '.$token->[3].' when looking for &lt;/'.$$stack[-1].'&gt; in file');
1.150     albertel  537: 	    &end_tag($stack,$parstack,$token);
                    538: 	  }
1.101     albertel  539: 	}
1.140     albertel  540: 
1.212     albertel  541: 	if ($Apache::lonxml::usestyle &&
                    542: 	    exists($$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: 	   $$pars[-1]->unget_token($token);
                    961: 	 }
1.57      albertel  962:        }
                    963:      }
1.228     albertel  964:      if (($depth >=0) && ($#$pars == 0) ) { $top_empty=1; }
1.212     albertel  965:      if (($depth >=0) && ($#$pars > 0) ) {
                    966:        pop(@$pars);
                    967:        pop(@Apache::lonxml::pwd);
                    968:      }
1.224     albertel  969:    }
                    970:    if ($top_empty && $depth >= 0) {
                    971:        #never found the end tag ran out of text, throw error send back blank
                    972:        &error('Never found end tag for &lt;'.$tag.'&gt;');
                    973:        if ($gotfullstack) {
                    974: 	   my $newstring='</'.$tag.'>'.$result;
                    975: 	   &Apache::lonxml::newparser($pars,\$newstring);
                    976:        }
                    977:        $result='';
1.57      albertel  978:    }
                    979:  } else {
1.212     albertel  980:      while ($#$pars > -1) {
                    981: 	 while ($token = $$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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