config file support for dbicdump script

[dbsrgits/DBIx-Class-Schema-Loader.git] / script / dbicdump

#!/usr/bin/perl

=head1 NAME

dbicdump - Dump a schema using DBIx::Class::Schema::Loader

=head1 SYNOPSIS

  dbicdump <configuration_file>
  dbicdump [-o <loader_option>=<value> ] <schema_class> <connect_info>

Examples:

  $ dbicdump schema.conf

  $ dbicdump -o dump_directory=./lib \
    -o components='["InflateColumn::DateTime"]' \
    MyApp::Schema dbi:SQLite:./foo.db '{ quote_char => "\"" }'

  $ dbicdump -o dump_directory=./lib \
    -o components='["InflateColumn::DateTime"]' \
    -o preserve_case=1 \
    MyApp::Schema dbi:mysql:database=foo user pass '{ quote_char => "`" }'

  $ dbicdump -o dump_directory=./lib \
    -o components='["InflateColumn::DateTime"]' \
    MyApp::Schema 'dbi:mysql:database=foo;host=domain.tld;port=3306' user pass

On Windows that would be:

  $ dbicdump -o dump_directory=.\lib ^
    -o components="[q{InflateColumn::DateTime}]" ^
    -o preserve_case=1 ^
    MyApp::Schema dbi:mysql:database=foo user pass "{ quote_char => q{`} }"
    
Configuration Files must have schema_class and connect_info sections,
an example of a general config file is as follows:

    schema_class MyApp::Schema
    
    # connection string
    <connect_info>
        dsn     dbi:mysql:example
        user    root
        pass    secret
    </connect_info>
    
    # dbic loader options
    <loader_options>
        components  InflateColumn::DateTime
        components  TimeStamp
    </loader_options>

=head1 DESCRIPTION

Dbicdump generates a L<DBIx::Class> schema using
L<DBIx::Class::Schema::Loader/make_schema_at> and dumps it to disk.

You can pass any L<DBIx::Class::Schema::Loader::Base> constructor option using
C<< -o <option>=<value> >>. For convenience, option names will have C<->
replaced with C<_> and values that look like references or quote-like
operators will be C<eval>-ed before being passed to the constructor.

The C<dump_directory> option defaults to the current directory if not
specified.

=head1 SEE ALSO

L<DBIx::Class::Schema::Loader>, L<DBIx::Class>.

=head1 AUTHOR

Dagfinn Ilmari Mannsåker C<< <ilmari@ilmari.org> >>

=head1 CONTRIBUTORS

Caelum: Rafael Kitover <rkitover@cpan.org>

=head1 LICENSE

This program is free software; you can redistribute it and/or modify it
under the same terms as Perl itself.

=cut

use strict;
use warnings;
use Getopt::Long;
use Config::Any;

use Pod::Usage;

use DBIx::Class::Schema::Loader qw/ make_schema_at /;
require DBIx::Class::Schema::Loader::Base;

my $loader_options;

GetOptions( 'loader-option|o=s%' => \&handle_option );
$loader_options->{dump_directory} ||= '.';

if (@ARGV == 1) {
    my $configuration_file = shift @ARGV;
    my $configurations =
      Config::Any->load_files( {
            use_ext => 1,
            flatten_to_hash => 1,
            files => [$configuration_file] } );
    
    my $c = (values %$configurations)[0];
    
    unless (keys %{$c->{connect_info}} && $c->{schema_class}) {
        pod2usage(1);
    }
    
    my ($dsn, $user, $pass, $options) =
        map { $c->{connect_info}->{$_} } qw/dsn user pass options/;
        $options ||= {};
        $c->{loader_options}->{dump_directory} ||=
            $loader_options->{dump_directory};
    
    make_schema_at(
        $c->{schema_class},
        $c->{loader_options} || {},
        [ $dsn, $user, $pass, %{$options} ],
    );
}
else {
    my ($schema_class, @loader_connect_info) = @ARGV
        or pod2usage(1);
    
    my $dsn = shift @loader_connect_info;
    
    my ($user, $pass) = $dsn =~ /sqlite/i ? ('', '')
        : splice @loader_connect_info, 0, 2;
    
    my @extra_connect_info_opts = map parse_value($_), @loader_connect_info;
    
    make_schema_at(
        $schema_class,
        $loader_options,
        [ $dsn, $user, $pass, @extra_connect_info_opts ],
    );
}

exit 0;

sub parse_value {
    my $value = shift;

    $value = eval $value if $value =~ /^\s*(?:sub\s*\{|q\w?\s*[^\w\s]|[[{])/;

    return $value;
}

sub handle_option {
    my ($self, $key, $value) = @_;

    $key =~ tr/-/_/;
    die "Unknown option: $key\n"
        unless DBIx::Class::Schema::Loader::Base->can($key);

    $value = parse_value $value;

    $loader_options->{$key} = $value;
}

1;

__END__