lib/Frey/Pipe.pm

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

use Frey::Action;

=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;

        $self->title( ref($self) . ' | ' . $self->pipe );

        foreach my $part ( split(/\|/, $self->pipe ) ) {
                warn "# part: '$part'";
                if ( $part =~ m{^([^/]+)/([^\+\?]+)(.*)?$} ) {
                        my ( $class, $method, $args ) = ( $1, $2, $3 );
                        push @{ $self->status }, { $class => { method => $method, args => $args } };
                        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;
                                push @{ $self->status }, { $class =>$args };
                                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 && $self->debug; # FIXME replace with query

                        my $code = '$result = ' . $class . '->new' . dump( %$default ) . '->' . $method . '();';
                        warn "# pipe $part -> $code" if $self->debug;
                        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;
                }
        }

        warn "# pipe ", $self->title, dump( $self->status );

        return $out;
}

1;
1	package Frey::Pipe;
2	use Moose;
3	extends 'Frey';
4	with 'Frey::Web';
5
6	use Frey::Action;
7
8	=head1 DESCRIPTION
9
10	Shell pipes for structured data
11
12	=head1 EXAMPLE
13
14	Frey::Feed/data + uri=https://blog.rot13.org/index.xml \| Frey::Dumper/markup
15
16	this will produce following code:
17
18	Frey::Dumper->new( data =>
19	Frey::Feed->new( uri => 'https://blog.rot13.org/index.xml' )->data
20	)->markup
21
22	=cut
23
24	has pipe => (
25	is => 'rw',
26	required => 1,
27	default => 'Frey::Feed/data+uri=https://blog.rot13.org/index.xml\|Frey::Dumper/markup',
28	);
29
30	use Data::Dump qw/dump/;
31
32	sub markup {
33	my ($self) = @_;
34
35	my $out;
36	my $pipe;
37
38	$self->title( ref($self) . ' \| ' . $self->pipe );
39
40	foreach my $part ( split(/\\|/, $self->pipe ) ) {
41	warn "# part: '$part'";
42	if ( $part =~ m{^([^/]+)/([^\+\?]+)(.*)?$} ) {
43	my ( $class, $method, $args ) = ( $1, $2, $3 );
44	push @{ $self->status }, { $class => { method => $method, args => $args } };
45	my $params = $pipe;
46	$params = {} unless defined $params;
47	if ( defined $args ) {
48	$args =~ s{^[\?\+\s]}{};
49	warn "# class $class method $method args '$args'", $pipe ? " pipe args " . join(',',keys %$pipe) : '' if $self->debug;
50	push @{ $self->status }, { $class =>$args };
51	map {
52	my ( $name, $value ) = ( $1, $2 ) if m{^([^=]+)=(.+)$} \|\| confess "can't parse '$_'";
53	$params->{$name} = $value;
54	} split(/\s*\+\s/, $args)
55	}
56
57	my ( $html, $default ) = Frey::Action->new( class => $class, params => $params )->params_form;
58	warn "$class need more params than ",dump( $default ) if $html && $self->debug; # FIXME replace with query
59
60	my $code = '$result = ' . $class . '->new' . dump( %$default ) . '->' . $method . '();';
61	warn "# pipe $part -> $code" if $self->debug;
62	my $result;
63	eval $code;
64	die $@ if $@;
65	warn "# result ",ref( $result );
66	# $out .= qq{<span class="frey-popdown">$part<code>} . dump( $result ) . '</code><span><hr>';
67	$out = $result;
68	$pipe = { $method => $result };
69	} else {
70	die "don't know what to do with '$part' from ",$self->pipe;
71	}
72	}
73
74	warn "# pipe ", $self->title, dump( $self->status );
75
76	return $out;
77	}
78
79	1;