lib/Frey/Pipe.pm

package Frey::Pipe;
use Moose;
extends 'Frey';

use Frey::Action;

=head1 DESCRIPTION

Shell pipes for structured data

=head1 EXAMPLE

 Frey::Feed/data + uri=http://blog.rot13.org/index.xml | Frey::Dumper/markup

this will produce following code:

        Frey::Dumper->new( data =>
                Frey::Feed->new( uri => 'http://blog.rot13.org/index.xml' )->data
        )->markup

=cut

has pipe => (
        is => 'rw',
        required => 1,
        default => 'Frey::Feed/data+uri=http://blog.rot13.org/index.xml|Frey::Dumper/markup',
);

use Data::Dump qw/dump/;

sub markup {
        my ($self) = @_;

        my $out;
        my $pipe;

        foreach my $part ( split(/\|/, $self->pipe ) ) {
                warn "# part: '$part'";
                if ( $part =~ m{^([^/]+)/([^\+\?]+)(.*)?$} ) {
                        my ( $class, $method, $args ) = ( $1, $2, $3 );
                        my $params = $pipe;
                        $params = {} unless defined $params;
                        if ( defined $args ) {
                                $args =~ s{^[\?\+\s]}{};
                                warn "# class $class method $method args '$args'", $pipe ? " pipe args " . join(',',keys %$pipe) : '' if $self->debug;
                                map {
                                        my ( $name, $value ) = ( $1, $2 ) if m{^([^=]+)=(.+)$} || confess "can't parse '$_'";
                                        $params->{$name} = $value;
                                } split(/\s*\+\s/, $args)
                        }

                        my ( $html, $default ) = Frey::Action->new( class => $class, params => $params )->params_form;
                        warn "$class need more params than ",dump( $default ) if $html; # FIXME replace with query

                        my $code = '$result = ' . $class . '->new' . dump( %$default ) . '->' . $method . '();';
                        warn "# pipe $part -> $code";
                        my $result;
                        eval $code;
                        die $@ if $@;
                        warn "# result ",ref( $result );
#                       $out .= qq{<span class="frey-popdown">$part<code>} . dump( $result ) . '</code><span><hr>';
                        $out = $result;
                        $pipe = { $method => $result };
                } else {
                        die "don't know what to do with '$part' from ",$self->pipe;
                }
        }

        return '<code>' . $self->pipe . '</code>' . $out;
}

1;
1	package Frey::Pipe;
2	use Moose;
3	extends 'Frey';
4
5	use Frey::Action;
6
7	=head1 DESCRIPTION
8
9	Shell pipes for structured data
10
11	=head1 EXAMPLE
12
13	Frey::Feed/data + uri=http://blog.rot13.org/index.xml \| Frey::Dumper/markup
14
15	this will produce following code:
16
17	Frey::Dumper->new( data =>
18	Frey::Feed->new( uri => 'http://blog.rot13.org/index.xml' )->data
19	)->markup
20
21	=cut
22
23	has pipe => (
24	is => 'rw',
25	required => 1,
26	default => 'Frey::Feed/data+uri=http://blog.rot13.org/index.xml\|Frey::Dumper/markup',
27	);
28
29	use Data::Dump qw/dump/;
30
31	sub markup {
32	my ($self) = @_;
33
34	my $out;
35	my $pipe;
36
37	foreach my $part ( split(/\\|/, $self->pipe ) ) {
38	warn "# part: '$part'";
39	if ( $part =~ m{^([^/]+)/([^\+\?]+)(.*)?$} ) {
40	my ( $class, $method, $args ) = ( $1, $2, $3 );
41	my $params = $pipe;
42	$params = {} unless defined $params;
43	if ( defined $args ) {
44	$args =~ s{^[\?\+\s]}{};
45	warn "# class $class method $method args '$args'", $pipe ? " pipe args " . join(',',keys %$pipe) : '' if $self->debug;
46	map {
47	my ( $name, $value ) = ( $1, $2 ) if m{^([^=]+)=(.+)$} \|\| confess "can't parse '$_'";
48	$params->{$name} = $value;
49	} split(/\s*\+\s/, $args)
50	}
51
52	my ( $html, $default ) = Frey::Action->new( class => $class, params => $params )->params_form;
53	warn "$class need more params than ",dump( $default ) if $html; # FIXME replace with query
54
55	my $code = '$result = ' . $class . '->new' . dump( %$default ) . '->' . $method . '();';
56	warn "# pipe $part -> $code";
57	my $result;
58	eval $code;
59	die $@ if $@;
60	warn "# result ",ref( $result );
61	# $out .= qq{<span class="frey-popdown">$part<code>} . dump( $result ) . '</code><span><hr>';
62	$out = $result;
63	$pipe = { $method => $result };
64	} else {
65	die "don't know what to do with '$part' from ",$self->pipe;
66	}
67	}
68
69	return '<code>' . $self->pipe . '</code>' . $out;
70	}
71
72	1;