lib/Frey/Pipe.pm

package Frey::Pipe;
use Moose;

=head1 DESCRIPTION

Shell pipes for structured data

=head1 EXAMPLE

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

this will produce following code:

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

=cut

has pipe => (
        is => 'rw',
        required => 1,
        default => 'Frey::Feed/data+uri=https://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;
                        if ( defined $args ) {
                                $args =~ s/^\+//;
                                warn "# class $class method $method args $args", $pipe ? " pipe args " . join(',',keys %$pipe) : '';
                                map {
                                        my ( $name, $value ) = ( $1, $2 ) if m{^([^=]+)=(.+)$};
                                        $params->{$name} = $value;
                                } split(/[\s\+]/, $args)
                        }
                        my $code = '$result = ' . $class . '->new' . dump( %$params ) . '->' . $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 $out;
}

1;
1	dpavlin	300	package Frey::Pipe;
2			use Moose;
3
4			=head1 DESCRIPTION
5
6			Shell pipes for structured data
7
8			=head1 EXAMPLE
9
10			Frey::Feed/data + uri=https://blog.rot13.org/index.xml \| Frey::Dumper/markup
11
12			this will produce following code:
13
14			Frey::Dumper->new( data =>
15			Frey::Feed->new( uri => 'https://blog.rot13.org/index.xml' )->data
16			)->markup
17
18			=cut
19
20			has pipe => (
21			is => 'rw',
22			required => 1,
23			default => 'Frey::Feed/data+uri=https://blog.rot13.org/index.xml\|Frey::Dumper/markup',
24			);
25
26			use Data::Dump qw/dump/;
27
28			sub markup {
29			my ($self) = @_;
30
31			my $out;
32			my $pipe;
33
34			foreach my $part ( split(/\\|/, $self->pipe ) ) {
35			warn "# part: '$part'";
36			if ( $part =~ m{^([^/]+)/([^\+]+)(\+.*)?$} ) {
37			my ( $class, $method, $args ) = ( $1, $2, $3 );
38			my $params = $pipe;
39			if ( defined $args ) {
40			$args =~ s/^\+//;
41			warn "# class $class method $method args $args", $pipe ? " pipe args " . join(',',keys %$pipe) : '';
42			map {
43			my ( $name, $value ) = ( $1, $2 ) if m{^([^=]+)=(.+)$};
44			$params->{$name} = $value;
45			} split(/[\s\+]/, $args)
46			}
47			my $code = '$result = ' . $class . '->new' . dump( %$params ) . '->' . $method . '();';
48			warn "# pipe $part -> $code";
49			my $result;
50			eval $code;
51			die $@ if $@;
52			warn "# result ",ref( $result );
53	dpavlin	327	# $out .= qq{<span class="frey-popdown">$part<code>} . dump( $result ) . '</code><span><hr>';
54			$out = $result;
55	dpavlin	300	$pipe = { $method => $result };
56			} else {
57			die "don't know what to do with '$part' from ",$self->pipe;
58			}
59			}
60
61			return $out;
62			}
63
64			1;