Annotation of loncom/interface/lonchatfetch.pm, revision 1.11
1.1 www 1: # The LearningOnline Network
2: # Chat Fetching
3: #
1.11 ! albertel 4: # $Id: lonchatfetch.pm,v 1.10 2003/06/23 19:59:54 www Exp $
1.1 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:
29: package Apache::lonchatfetch;
30:
31: use strict;
32: use Apache::Constants qw(:common);
33: use Apache::lontexconvert;
1.4 www 34: use Apache::loncommon;
35: use Apache::lonnet;
1.1 www 36:
37: sub handler {
38: my $r = shift;
1.6 www 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:
1.1 www 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.'.$ENV{'request.course.id'}.'.home'};
1.4 www 56:
1.1 www 57: my @entries=split(/\:/,
1.8 www 58: &Apache::lonnet::reply(
59: "chatretr:$cdom:$cnum:$ENV{'user.domain'}:$ENV{'user.name'}",$chome));
1.10 www 60: # Figure out what the last valid entry-id is
61: my ($lastid,$thentime,$idnum);
62: foreach (@entries) {
63: $_=~/^(\w+)/;
64: if ($1 ne 'active_participant') {
65: $lastid=$1;
66: ($thentime,$idnum)=split(/\_/,$lastid);
67: }
68: }
1.4 www 69: # ----------------------------------------------------------- Can see identity?
70: my $crs='/'.$ENV{'request.course.id'};
71: if ($ENV{'request.course.sec'}) {
72: $crs.='_'.$ENV{'request.course.sec'};
73: }
74: $crs=~s/\_/\//g;
75: my $seeid=&Apache::lonnet::allowed('rin',$crs);
1.1 www 76: # -------------------------------------------------------- see which ones apply
77: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},['lastid']);
78: my $include=0;
79: my $newstuff='';
1.3 www 80: my $bottomid='';
1.2 www 81: unless ($ENV{'form.lastid'}) {
82: $include=1;
83: $newstuff='<html><body bgcolor="#FFFFFF">';
84: }
1.9 www 85: my @participants=();
1.1 www 86: foreach (@entries) {
1.9 www 87: my ($id,$msg,$udom)=split(/\:/,&Apache::lonnet::unescape($_));
88: if ($id eq 'active_participant') {
89: chomp($udom);
90: $participants[$#participants+1]=
91: &Apache::loncommon::nickname($msg,$udom);
92: } elsif ($include) {
93: chomp($msg);
94: my ($msgtime,$msgnum)=split(/\_/,$id);
95: my ($sdom,$snum,$anon,$contrib)=split(/\:/,
96: &Apache::lonnet::unescape($msg));
97: $contrib=&Apache::lonnet::unescape($contrib);
98: $contrib=~s/\n/\<br \/\>/g;
1.11 ! albertel 99: ($contrib,my $errors)=&Apache::lontexconvert::msgtexconverted($contrib);
! 100: if ($errors) { $contrib.="[Message not fully displayed due to incorrect embedded TeX]"; }
! 101: if ($errors && $snum eq $ENV{'user.name'} &&
! 102: $sdom eq $ENV{'user.domain'} ) {
! 103: $contrib.="<br />[TeX error message: $errors]";
! 104: }
1.9 www 105: $contrib=~s/\n/ /g;
106: $contrib=~s/\'/\&\#39\;/g;
107: my $sender='';
108: if ($seeid) {
109: $sender=&Apache::loncommon::plainname($snum,$sdom);
110: my $nick=&Apache::loncommon::nickname($snum,$sdom);
111: if (($nick) && ($nick ne $sender)) {
112: $sender.=' '.$nick;
113: }
114: if ($anon) { $sender.=' [Anon]' };
115: } elsif (!$anon) {
116: $sender=&Apache::loncommon::nickname($snum,$sdom);
1.7 www 117: } else {
1.9 www 118: $sender=&Apache::loncommon::screenname($snum,$sdom);
119: unless ($sender) { $sender="Anonymous"; }
1.7 www 120: }
1.9 www 121: $sender=~s/\'/\"/g;
122: my $color=$sender;
123: $color=~tr/a-j/0-9/;
124: $color=~tr/A-J/0-9/;
125: $color=~tr/k-t/0-9/;
126: $color=~tr/K-T/0-9/;
127: $color=~tr/u-z/0-5/;
128: $color=~tr/U-Z/0-5/;
129: $color=~s/\D//g;
130: $color=substr($color,0,6);
131: my $timestamp=localtime($msgtime);
132: my ($mhour,$mmin,$msec)=($timestamp=~/(\d\d)\:(\d\d)\:(\d\d)/);
133: $newstuff.='<font color="#'.$color.'"><a name="'.$id.'"><b>'.
134: $sender.'</b> ('.$mhour.':'.$mmin.':'.$msec.'): '.
135: $contrib."</font><br>";
136: $bottomid=$id;
137: } else {
138: $_=~/^(\w+)/;
139: if ($1 eq $ENV{'form.lastid'}) { $include=1; }
140: }
1.1 www 141: }
1.9 www 142: my $participant_output=join('<br />',sort @participants);
1.1 www 143: $r->print(<<ENDDOCUMENT);
144: <html>
145: <head>
146: <title>The LearningOnline Network with CAPA</title>
147: <meta HTTP-EQUIV="Refresh" CONTENT="5; url=/adm/chatfetch?lastid=$lastid">
148: </head>
149: <body bgcolor="#FFFFFF">
150: <script>
151: parent.chatout.document.writeln('$newstuff');
1.3 www 152: parent.chatout.scroll(0,10000000);
1.1 www 153: </script>
1.9 www 154: $participant_output
1.1 www 155: </body>
156: </html>
157: ENDDOCUMENT
158: return OK;
159: }
160:
161: 1;
162: __END__
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