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 $dxchann
9 # This class is 'inherited' (if that is the goobledegook for what I am doing)
10 # by various other modules. The point to understand is that the 'instance variable'
11 # is in fact what normal people would call the state vector and all useful info
12 # about a connection goes in there.
14 # Another point to note is that a vector may contain a list of other vectors.
15 # I have simply added another variable to the vector for 'simplicity' (or laziness
16 # as it is more commonly called)
18 # PLEASE NOTE - I am a C programmer using this as a method of learning perl
19 # firstly and OO about ninthly (if you don't like the design and you can't
20 # improve it with better OO by make it smaller and more efficient, then tough).
22 # Copyright (c) 1998 - Dirk Koopman G1TLH
29 @ISA = qw(DXCommandmode DXProt Exporter);
37 # create a new connection object [$obj = DXChannel->new($call, $msg_conn_obj, $user_obj)]
40 my ($pkg, $call, $conn, $user) = @_;
43 die "trying to create a duplicate channel for $call" if $channels{$call};
44 $self->{call} = $call;
45 $self->{conn} = $conn if defined $conn; # if this isn't defined then it must be a list
46 $self->{user} = $user if defined $user;
50 return $channels{$call} = $self;
53 # obtain a connection object by callsign [$obj = DXChannel->get($call)]
56 my ($pkg, $call) = @_;
57 return $connect{$call};
60 # obtain all the connection objects
64 return values(%channels);
67 # obtain a connection object by searching for its connection reference
70 my ($pkg, $conn) = @_;
73 foreach $self (values(%channels)) {
74 return $self if ($self->{conn} == $conn);
79 # get rid of a connection object [$obj->del()]
83 delete $channels{$self->{call}};
87 # handle out going messages, immediately without waiting for the select to drop
88 # this could, in theory, block
92 my $conn = $self->{conn};
94 # is this a list of channels ?
96 die "tried to send_now to an invalid channel list" if !defined $self->{list};
98 foreach $lself (@$self->{list}) {
99 $lself->send_now(@_); # it's recursive :-)
103 my $call = $self->{call};
109 print main::DEBUG "$t > $sort $call $line\n" if defined DEBUG;
110 print "> $sort $call $line\n";
111 $conn->send_now("$sort$call|$line");
117 # the normal output routine
119 sub send # this is always later and always data
122 my $conn = $self->{conn};
124 # is this a list of channels ?
125 if (!defined $conn) {
126 die "tried to send to an invalid channel list" if !defined $self->{list};
128 foreach $lself (@$self->{list}) {
129 $lself->send(@_); # here as well :-) :-)
132 my $call = $self->{call};
138 print main::DEBUG "$t > D $call $line\n" if defined DEBUG;
139 print "> D $call $line\n";
140 $conn->send_later("D$call|$line");
145 # send a file (always later)
148 my ($self, $fn) = @_;
149 my $call = $self->{call};
150 my $conn = $self->{conn};
153 open(F, $fn) or die "can't open $fn for sending file ($!)";
159 # just a shortcut for $dxchan->send(msg(...));
163 $self->send(DXM::msg(@_));