2 # module to manage channel lists & data
4 # This is the base class for all channel operations, which is everything to do
5 # with input and output really.
7 # The instance variable in the outside world will be generally be called $dxchann
9 # This class is 'inherited' (if that is the goobledegook for what I am doing)
10 # by various other modules. The point to understand is that the 'instance variable'
11 # is in fact what normal people would call the state vector and all useful info
12 # about a connection goes in there.
14 # Another point to note is that a vector may contain a list of other vectors.
15 # I have simply added another variable to the vector for 'simplicity' (or laziness
16 # as it is more commonly called)
18 # PLEASE NOTE - I am a C programmer using this as a method of learning perl
19 # firstly and OO about ninthly (if you don't like the design and you can't
20 # improve it with better OO by make it smaller and more efficient, then tough).
22 # Copyright (c) 1998 - Dirk Koopman G1TLH
37 conn => '9,Msg Conn ref',
38 user => '9,DXUser ref',
39 startt => '0,Start Time,atime',
41 priv => '9,Privilege',
42 state => '0,Current State',
43 oldstate => '5,Last State',
44 list => '9,Dep Chan List',
45 name => '0,User Name',
46 consort => '9,Connection Type',
47 sort => '9,Type of Channel',
51 # create a new channel object [$obj = DXChannel->new($call, $msg_conn_obj, $user_obj)]
54 my ($pkg, $call, $conn, $user) = @_;
57 die "trying to create a duplicate channel for $call" if $channels{$call};
58 $self->{call} = $call;
59 $self->{conn} = $conn if defined $conn; # if this isn't defined then it must be a list
60 $self->{user} = $user if defined $user;
61 $self->{startt} = $self->{t} = time;
63 $self->{oldstate} = 0;
65 return $channels{$call} = $self;
68 # obtain a channel object by callsign [$obj = DXChannel->get($call)]
71 my ($pkg, $call) = @_;
72 return $channels{$call};
75 # obtain all the channel objects
79 return values(%channels);
82 # obtain a channel object by searching for its connection reference
85 my ($pkg, $conn) = @_;
88 foreach $self (values(%channels)) {
89 return $self if ($self->{conn} == $conn);
94 # get rid of a channel object [$obj->del()]
98 delete $channels{$self->{call}};
102 # handle out going messages, immediately without waiting for the select to drop
103 # this could, in theory, block
107 my $conn = $self->{conn};
109 my $call = $self->{call};
114 dbg('chan', "-> $sort $call $line\n");
115 $conn->send_now("$sort$call|$line");
121 # the normal output routine
123 sub send # this is always later and always data
126 my $conn = $self->{conn};
127 my $call = $self->{call};
132 dbg('chan', "-> D $call $line\n");
133 $conn->send_later("D$call|$line");
138 # send a file (always later)
141 my ($self, $fn) = @_;
142 my $call = $self->{call};
143 my $conn = $self->{conn};
146 open(F, $fn) or die "can't open $fn for sending file ($!)";
152 # just a shortcut for $dxchan->send(msg(...));
156 $self->send(DXM::msg(@_));
159 # change the state of the channel - lots of scope for debugging here :-)
163 $self->{oldstate} = $self->{state};
164 $self->{state} = shift;
165 dbg('state', "$self->{call} channel state $self->{oldstate} -> $self->{state}\n");
168 # various access routines
171 # return a list of valid elements
180 # return a prompt for a field
185 my ($self, $ele) = @_;
192 my $name = $AUTOLOAD;
194 return if $name =~ /::DESTROY$/;
197 die "Non-existant field '$AUTOLOAD'" if !$valid{$name};
198 @_ ? $self->{$name} = shift : $self->{$name} ;