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|
package App::CLI::Command;
use strict;
use warnings;
use Locale::Maketext::Simple;
use Carp ();
=head1 NAME
App::CLI::Command - Base class for App::CLI commands
=head1 SYNOPSIS
package MyApp;
use base 'App::CLI';
package main;
MyApp->dispatch;
package MyApp::Help;
use base 'App::CLI::Command';
sub options {
('verbose' => 'verbose');
}
sub run {
my ($self, $arg) = @_;
}
=head1 DESCRIPTION
=cut
use constant subcommands => ();
use constant options => ();
sub new {
my $class = shift;
my $self = bless {}, $class;
%$self = @_;
return $self;
}
sub command_options {
( (map { $_ => $_ } $_[0]->subcommands),
$_[0]->options );
}
sub run_command {
my $self = shift;
$self->run(@_);
}
sub subcommand {
my $self = shift;
my @cmd = $self->subcommands;
@cmd = values %{{$self->options}} if @cmd && $cmd[0] eq '*';
for (grep {$self->{$_}} @cmd) {
no strict 'refs';
if (exists ${ref($self).'::'}{$_.'::'}) {
bless ($self, (ref($self)."::$_"));
last;
}
}
}
sub app {
my $self = shift;
die Carp::longmess "not a ref" unless ref $self;
$self->{app} = shift if @_;
return ref ($self->{app}) || $self->{app};
}
=head3 brief_usage ($file)
Display an one-line brief usage of the command object. Optionally, a file
could be given to extract the usage from the POD.
=cut
sub brief_usage {
my ($self, $file) = @_;
open my ($podfh), '<', ($file || $self->filename) or return;
local $/=undef;
my $buf = <$podfh>;
my $base = $self->app;
if($buf =~ /^=head1\s+NAME\s*\Q$base\E::(\w+ - .+)$/m) {
print " ",loc(lc($1)),"\n";
} else {
my $cmd = $file ||$self->filename;
$cmd =~ s/^(?:.*)\/(.*?).pm$/$1/;
print " ", lc($cmd), " - ",loc("undocumented")."\n";
}
close $podfh;
}
=head3 usage ($want_detail)
Display usage. If C<$want_detail> is true, the C<DESCRIPTION>
section is displayed as well.
=cut
sub usage {
my ($self, $want_detail) = @_;
my $fname = $self->filename;
my($cmd) = $fname =~ m{\W(\w+)\.pm$};
require Pod::Simple::Text;
my $parser = Pod::Simple::Text->new;
my $buf;
$parser->output_string(\$buf);
$parser->parse_file($fname);
my $base = $self->app;
$buf =~ s/\Q$base\E::(\w+)/\l$1/g;
$buf =~ s/^AUTHORS.*//sm;
$buf =~ s/^DESCRIPTION.*//sm unless $want_detail;
print $self->loc_text($buf);
}
=head3 loc_text $text
Localizes the body of (formatted) text in $text, and returns the
localized version.
=cut
sub loc_text {
my $self = shift;
my $buf = shift;
my $out = "";
foreach my $line (split(/\n\n+/, $buf, -1)) {
if (my @lines = $line =~ /^( {4}\s+.+\s*)$/mg) {
foreach my $chunk (@lines) {
$chunk =~ /^(\s*)(.+?)( *)(: .+?)?(\s*)$/ or next;
my $spaces = $3;
my $loc = $1 . loc($2 . ($4||'')) . $5;
$loc =~ s/: /$spaces: / if $spaces;
$out .= $loc . "\n";
}
$out .= "\n";
}
elsif ($line =~ /^(\s+)(\w+ - .*)$/) {
$out .= $1 . loc($2) . "\n\n";
}
elsif (length $line) {
$out .= loc($line) . "\n\n";
}
}
return $out;
}
=head3 filename
Return the filename for the command module.
=cut
sub filename {
my $self = shift;
my $fname = ref($self);
$fname =~ s{::[a-z]+}{}; # subcommand
$fname =~ s{::}{/}g;
$INC{"$fname.pm"}
}
=head1 TODO
More documentation
=head1 SEE ALSO
L<App::CLI>
=head1 AUTHORS
Chia-liang Kao E<lt>clkao@clkao.orgE<gt>
=head1 COPYRIGHT
Copyright 2005-2006 by Chia-liang Kao E<lt>clkao@clkao.orgE<gt>.
This program is free software; you can redistribute it and/or modify it
under the same terms as Perl itself.
See L<http://www.perl.com/perl/misc/Artistic.html>
=cut
1;
|
