157 lines
3.6 KiB
Perl
157 lines
3.6 KiB
Perl
package Dahdi::Config::Params;
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#
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# Written by Oron Peled <oron@actcom.co.il>
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# Copyright (C) 2009, Xorcom
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# This program is free software; you can redistribute and/or
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# modify it under the same terms as Perl itself.
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#
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# $Id$
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#
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use strict;
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=head1 NAME
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Dahdi::Config::Params -- Object oriented representation of F<genconf_parameters> file.
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=head1 SYNOPSIS
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use Dahdi::Config::Params;
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my $params = Dahdi::Config::Params->new('the-config-file');
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print $params->item{'some-key'};
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print $params->item{'some-key', NODEFAULTS => 1};
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$params->dump; # For debugging
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=head1 DESCRIPTION
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The constructor must be given a configuration file name:
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=over 4
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=item * Missing file is B<not> an error.
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=item * Other opening errors cause a C<die> to be thrown.
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=item * The file name is saved as the value of C<GENCONF_FILE> key.
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=back
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The access to config keys should only be done via the C<item()> method:
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=over 4
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=item * It contains all hard-coded defaults.
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=item * All these values are overriden by directives in the config file.
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=item * Calling it with C<NODEFAULTS =E<gt> 1> option, returns C<undef> for keys that
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do not appear in the configuration file.
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=back
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=cut
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sub new($$) {
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my $pack = shift || die;
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my $cfg_file = shift || die;
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my $self = {
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GENCONF_FILE => $cfg_file,
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};
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bless $self, $pack;
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if(!open(F, $cfg_file)) {
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if(defined($!{ENOENT})) {
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#print STDERR "No $cfg_file. Assume empty config\n";
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return $self; # Empty configuration
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}
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die "$pack: Failed to open '$cfg_file': $!\n";
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}
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#print STDERR "$pack: $cfg_file\n";
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my $array_key;
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while(<F>) {
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my ($key, $val);
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chomp;
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s/#.*$//;
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s/\s+$//; # trim tail whitespace
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next unless /\S/;
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if(defined $array_key && /^\s+/) {
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s/^\s+//; # trim beginning whitespace
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push(@{$self->{$array_key}}, $_);
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next;
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}
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undef $array_key;
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($key, $val) = split(/\s+/, $_, 2);
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$key = lc($key);
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if(! defined $val) {
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$array_key = $key;
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next;
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}
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die "$cfg_file:$.: Duplicate key '$key'\n", if exists $self->{$key};
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$self->{$key} = $val;
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}
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close F;
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return $self;
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}
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sub item($$@) {
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my $self = shift || die;
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my $key = shift || die;
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my %options = @_;
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my %defaults = (
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base_exten => '4000',
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freepbx => 'no', # Better via -F command line
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fxs_immediate => 'no',
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fxs_default_start => 'ks',
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fxo_default_start => 'ks',
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em_signalling => 'none',
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lc_country => 'us',
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context_lines => 'from-pstn',
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context_phones => 'from-internal',
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context_input => 'astbank-input',
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context_output => 'astbank-output',
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group_phones => '5',
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group_lines => '0',
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brint_overlap => 'no',
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bri_sig_style => 'bri_ptmp',
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echo_can => 'mg2',
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bri_hardhdlc => 'auto',
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pri_connection_type => 'PRI',
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r2_idle_bits => '1101',
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tdm_framing => 'esf',
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'pri_termtype' => [ 'SPAN/* TE' ],
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);
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return $self->{$key} if exists($self->{$key}) or $options{NODEFAULTS};
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return $defaults{$key};
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}
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sub dump($) {
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my $self = shift || die;
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printf STDERR "%s dump:\n", ref $self;
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my $width = 30;
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foreach my $k (sort keys %$self) {
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my $val = $self->{$k};
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my $ref = ref $val;
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#print STDERR "DEBUG: '$k', '$ref', '$val'\n";
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if($ref eq '') {
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printf STDERR "%-${width}s %s\n", $k, $val;
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} elsif($ref eq 'SCALAR') {
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printf STDERR "%-${width}s %s\n", $k, ${$val};
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} elsif($ref eq 'ARRAY') {
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#printf STDERR "%s:\n", $k;
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my $i = 0;
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foreach my $v (@{$val}) {
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printf STDERR "%-${width}s %s\n", "$k\->[$i]", $v;
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$i++;
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}
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} elsif($ref eq 'HASH') {
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#printf STDERR "%s:\n", $k;
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foreach my $k1 (keys %{$val}) {
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printf STDERR "%-${width}s %s\n", "$k\->\{$k1\}", ${$val}{$k1};
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}
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} else {
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printf STDERR "%-${width}s (-> %s)\n", $k, $ref;
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}
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}
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}
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1;
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