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File:  [LON-CAPA] / loncom / interface / lonchatfetch.pm
Revision 1.8: download - view: text, annotated - select for diffs
Fri Mar 28 23:16:25 2003 UTC (21 years, 3 months ago) by www
Branches: MAIN
CVS tags: HEAD
Chat participants

    1: # The LearningOnline Network
    2: # Chat Fetching
    3: #
    4: # $Id: lonchatfetch.pm,v 1.8 2003/03/28 23:16:25 www Exp $
    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: 
   29: package Apache::lonchatfetch;
   30: 
   31: use strict;
   32: use Apache::Constants qw(:common);
   33: use Apache::lontexconvert;
   34: use Apache::loncommon;
   35: use Apache::lonnet;
   36: 
   37: sub handler {
   38:     my $r = shift;
   39: 
   40:     my $loaderror=&Apache::lonnet::overloaderror($r);
   41:     if ($loaderror) { return $loaderror; }
   42:     $loaderror=
   43:        &Apache::lonnet::overloaderror($r,
   44:          $ENV{'course.'.$ENV{'request.course.id'}.'.home'});
   45:     if ($loaderror) { return $loaderror; }
   46: 
   47:     $r->content_type('text/html');
   48:     $r->send_http_header;
   49:     return OK if $r->header_only;
   50: 
   51: # ------------------------------------------------------------ retrieve entries
   52: 
   53:     my $cnum=$ENV{'course.'.$ENV{'request.course.id'}.'.num'};
   54:     my $cdom=$ENV{'course.'.$ENV{'request.course.id'}.'.domain'};
   55:     my $chome=$ENV{'course.'.$ENV{'request.course.id'}.'.home'};
   56: 
   57:     my @entries=split(/\:/,
   58:        &Apache::lonnet::reply(
   59:         "chatretr:$cdom:$cnum:$ENV{'user.domain'}:$ENV{'user.name'}",$chome));
   60:     my ($lastid)=($entries[$#entries]=~/^(\w+)/);
   61:     my ($thentime,$idnum)=split(/\_/,$lastid);
   62: # ----------------------------------------------------------- Can see identity?
   63:     my $crs='/'.$ENV{'request.course.id'};
   64:     if ($ENV{'request.course.sec'}) {
   65:        $crs.='_'.$ENV{'request.course.sec'};
   66:     }                 
   67:     $crs=~s/\_/\//g;
   68:     my $seeid=&Apache::lonnet::allowed('rin',$crs);
   69: # -------------------------------------------------------- see which ones apply
   70:     &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},['lastid']);
   71:     my $include=0;
   72:     my $newstuff='';
   73:     my $bottomid='';
   74:     unless ($ENV{'form.lastid'}) { 
   75:        $include=1; 
   76:        $newstuff='<html><body bgcolor="#FFFFFF">';
   77:     }
   78:     foreach (@entries) {
   79: 	if ($include) {
   80: 	    my ($id,$msg,$uname)=split(/\:/,&Apache::lonnet::unescape($_));
   81: 	    if ($id eq 'active_participant') {
   82: #		$newstuff.='participant: '.$msg.' '.$uname;
   83: 	    } else {
   84: 		chomp($msg);
   85: 		my ($msgtime,$msgnum)=split(/\_/,$id);
   86: 		my ($sdom,$snum,$anon,$contrib)=split(/\:/,
   87:                                               &Apache::lonnet::unescape($msg));
   88: 		$contrib=&Apache::lonnet::unescape($contrib);
   89: 		$contrib=~s/\n/\<br \/\>/g;
   90: 		$contrib=&Apache::lontexconvert::msgtexconverted($contrib);
   91: 		$contrib=~s/\n/ /g;
   92: 		$contrib=~s/\'/\&\#39\;/g;
   93: 		my $sender='';
   94: 		if ($seeid) {
   95: 		    $sender=&Apache::loncommon::plainname($snum,$sdom);
   96: 		    my $nick=&Apache::loncommon::nickname($snum,$sdom);
   97: 		    if (($nick) && ($nick ne $sender)) {
   98: 			$sender.=' '.$nick;
   99: 		    }
  100: 		    if ($anon) { $sender.=' [Anon]' };
  101: 		} elsif (!$anon) {
  102: 		    $sender=&Apache::loncommon::nickname($snum,$sdom);
  103: 		} else {
  104: 		    $sender=&Apache::loncommon::screenname($snum,$sdom);
  105: 		    unless ($sender) { $sender="Anonymous"; }
  106: 		}
  107: 		$sender=~s/\'/\"/g;
  108: 		my $color=$sender;
  109: 		$color=~tr/a-j/0-9/;
  110: 		$color=~tr/A-J/0-9/;
  111: 		$color=~tr/k-t/0-9/;
  112: 		$color=~tr/K-T/0-9/;
  113: 		$color=~tr/u-z/0-5/;
  114: 		$color=~tr/U-Z/0-5/;
  115: 		$color=~s/\D//g;
  116: 		$color=substr($color,0,6);
  117: 		my $timestamp=localtime($msgtime);
  118: 		my ($mhour,$mmin,$msec)=($timestamp=~/(\d\d)\:(\d\d)\:(\d\d)/);
  119: 		$newstuff.='<font color="#'.$color.'"><a name="'.$id.'"><b>'.
  120: 		    $sender.'</b> ('.$mhour.':'.$mmin.':'.$msec.'): '.
  121: 		    $contrib."</font><br>";
  122: 		$bottomid=$id;
  123: 	    }
  124:         } else {
  125:             $_=~/^(\w+)/;
  126:             if ($1 eq $ENV{'form.lastid'}) { $include=1; }
  127:         }
  128:     }
  129:     $r->print(<<ENDDOCUMENT);
  130: <html>
  131: <head>
  132: <title>The LearningOnline Network with CAPA</title>
  133:   <meta HTTP-EQUIV="Refresh" CONTENT="5; url=/adm/chatfetch?lastid=$lastid">
  134: </head>
  135: <body bgcolor="#FFFFFF">
  136: <script>
  137: parent.chatout.document.writeln('$newstuff');
  138: parent.chatout.scroll(0,10000000);
  139: </script>
  140: </body>
  141: </html>
  142: ENDDOCUMENT
  143:     return OK;
  144: } 
  145: 
  146: 1;
  147: __END__
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