chomp tied variables

[pxelator] / lib / PXElator / server.pm

diff --git a/lib/PXElator/server.pm b/lib/PXElator/server.pm
index a8ba059..84eab14 100644 (file)
--- a/lib/PXElator/server.pm
+++ b/lib/PXElator/server.pm
@@ -1,7 +1,97 @@
 package server;
 
-our $ip = '172.16.10.1';
+use warnings;
+use strict;
 
-our ( $ip_from, $ip_to ) = ( 10, 100 );
+our $base_dir = '/srv/pxelator';
+
+tie our $ip,      'server::tie', 'server_ip' => '172.16.10.1';
+tie our $netmask, 'server::tie', 'natmask'   => '255.255.255.0';
+tie our $bcast,   'server::tie', 'bcast'     => '172.16.10.254';
+tie our $ip_from, 'server::tie', 'ip_from'   => 10;
+tie our $ip_to,   'server::tie', 'ip_to'     => 100;
+tie our $domain,  'server::tie', 'domain'    => 'pxelator.lan';
+tie our $new_clients, 'server::tie', 'new_clients' => $ip_to - $ip_from;
+
+warn "DEV $ip $bcast $netmask";
+
+our $conf = "$base_dir/conf";
+mkdir $conf unless -e $conf;
+
+sub conf {
+       warn "## conf $conf";
+       $conf;
+}
+
+use Module::Refresh qw//;
+sub refresh {
+       Module::Refresh->refresh;
+       my $from = (caller(1))[3];
+       $from =~ s{^(\w+)::.+$}{$1};
+       my $eval = '$' . $from . '::debug = server::debug();';
+       warn "refresh $eval\n";
+       eval $eval;
+       warn $@ if $@;
+};
+
+mkdir $_ foreach grep { ! -d $_ } map { "$conf/$_" } ( 'ip', 'mac' );
+
+use File::Slurp;
+sub shared {
+       my ($name, $value) = @_;
+
+       my $path ="$conf/$name";
+       if ( defined $value ) {
+               write_file $path, $value;
+               warn "update $path = $value";
+       } else {
+               $value = read_file $path if -e $path;
+       }
+       return $value;
+}
+
+sub conf_default { shared($_[0]) || $_[1] }
+
+sub debug { shared('debug', @_) || 0 }
 
 warn "loaded";
+
+
+package server::tie;
+
+use File::Slurp;
+use Data::Dump qw/dump/;
+
+use server;
+
+sub TIESCALAR {
+       warn dump @_;
+       my ($class,$name,$default) = @_;
+
+       my $path = $server::base_dir . '/conf/' . $name;
+
+       my $o = {
+               path => $path,
+       };
+       write_file $o->{path}, $default unless -f $o->{path};
+
+warn "TIESCALAR $name ", $o->{path}, " [$default]";
+
+       bless \$o,$class;
+}
+
+sub STORE {
+       warn dump @_;
+       my ( $self, $value ) = @_;
+       write_file $$self->{path}, $value;
+}
+
+sub FETCH {
+       warn dump @_;
+       my $self = shift;
+       my $v = read_file $$self->{path};
+       chomp($v);
+       $v;
+}
+
+3;