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package Plugin::Convert;
use strict;
use warnings;
use IPC::Open2;
sub configure {
my $self = shift;
my $cmdref = shift;
$cmdref->($self, "convert", sub { $self->convert(@_); } );
$cmdref->($self, "define", sub { $self->define(@_); } );
return $self;
}
sub convert_common {
my ($from, $to) = @_;
my ($out, $in, $pid);
my @command = (
'units',
'-1',
'--compact',
'--quiet',
'--',
$from
);
if ($to) {
push @command, $to;
}
eval {
$pid = open2($out, $in, @command);
} or do {
return "Error: units command not installed";
};
my $output = <$out>;
chomp $output;
waitpid($pid, 0);
my $exit_status = $? >> 8;
return "Error: $output" if $exit_status;
return "$output"
}
sub convert {
my ($self, $irc, $logger, $who, $where, $ided, $rest, $no_reenter, @arguments) = @_;
my $from = (split / to /, $rest)[0];
my $to = (split / to /, $rest)[1];
return "Syntax: convert <from> [to <to>]" unless ($from);
my $converted = convert_common($from, $to);
return "Define $from: $converted" unless $to;
return "Convert $from -> $to: $converted";
}
sub define {
my ($self, $irc, $logger, $who, $where, $ided, $rest, $no_reenter, @arguments) = @_;
return "Syntax: define [unit/expression]" unless ($rest);
my $defn = convert_common($rest, undef);
return "Define $rest: $defn";
}
1;
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