lib/Frey/Pipe.pm

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

use lib 'lib';
use Frey::Action;

=head1 DESCRIPTION

Shell pipes for structured data

=head1 EXAMPLE

 Frey::Feed/as_data + uri=https://blog.rot13.org/index.xml | Frey::View::Dumper/as_markup

this will produce following code:

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

=cut

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

sub render_pipe { 'radio' };

use Data::Dump qw/dump/;

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

        my $out;
        my $pipe;

        $self->title( $self->pipe );

        my @parts;

        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(/&/, $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

                        warn "# pipe $part" if $self->debug;
                        my $o = $self->new_frey_class( $class, $default );

                        # XXX copy depends from parts of pipe
                        if ( $o->can('depends') ) {
                                $o->depends;
                                my $current_head;
                                $current_head->{$_}++ foreach $self->head;
                                foreach ( $o->head ) {
                                        next if $current_head->{$_}++;
                                        $self->add_head( $_ );
                                }
                        }

                        my $result = $o->$method;
                        warn "# result ",length( $result ), " bytes ", ref($result);

                        my $current_status;
                        $current_status->{$_}++ foreach $self->status;
                        foreach ( $o->status ) {
                                next if $current_status->{$_}++;
                                $self->add_status( $_ );
                                warn "# pipe add_status: $_";
                        }

                        $self->content_type( $o->content_type ) if $o->can('content_type');

                        $out = $result;
                        $method =~ s{^as_}{};
                        $pipe = { $method => $result };
                        push @parts, { $class . '->' . $method => $result };
                } else {
                        die "don't know what to do with '$part' from ",$self->pipe;
                }
        }

        $pipe = $self->pipe;

        $out = $self->error(
                qq|<a href="$pipe" title="copy pipe"><tt>$pipe</tt></a> = $out not scalar\n|
                . $self->html_dump($out)
        ) if ref $out;

        return $out;
}

__PACKAGE__->meta->make_immutable;
no Moose;

1;
1	dpavlin	300	package Frey::Pipe;
2			use Moose;
3	dpavlin	797	extends 'Frey::Class::Loader';
4	dpavlin	401	with 'Frey::Web';
5	dpavlin	368
6	dpavlin	861	use lib 'lib';
7	dpavlin	386	use Frey::Action;
8
9	dpavlin	300	=head1 DESCRIPTION
10
11			Shell pipes for structured data
12
13			=head1 EXAMPLE
14
15	dpavlin	467	Frey::Feed/as_data + uri=https://blog.rot13.org/index.xml \| Frey::View::Dumper/as_markup
16	dpavlin	300
17			this will produce following code:
18
19	dpavlin	467	Frey::View::Dumper->new( data =>
20	dpavlin	455	Frey::Feed->new( uri => 'https://blog.rot13.org/index.xml' )->as_data
21			)->as_markup
22	dpavlin	300
23			=cut
24
25			has pipe => (
26			is => 'rw',
27			required => 1,
28	dpavlin	467	default => 'Frey::Feed/as_data+uri=https://blog.rot13.org/index.xml\|Frey::View::Dumper/as_markup',
29	dpavlin	300	);
30
31	dpavlin	940	sub render_pipe { 'radio' };
32
33	dpavlin	300	use Data::Dump qw/dump/;
34
35	dpavlin	455	sub as_markup {
36	dpavlin	300	my ($self) = @_;
37
38			my $out;
39			my $pipe;
40
41	dpavlin	507	$self->title( $self->pipe );
42	dpavlin	418
43	dpavlin	507	my @parts;
44
45	dpavlin	300	foreach my $part ( split(/\\|/, $self->pipe ) ) {
46			warn "# part: '$part'";
47	dpavlin	377	if ( $part =~ m{^([^/]+)/([^\+\?]+)(.*)?$} ) {
48	dpavlin	300	my ( $class, $method, $args ) = ( $1, $2, $3 );
49			my $params = $pipe;
50	dpavlin	386	$params = {} unless defined $params;
51	dpavlin	300	if ( defined $args ) {
52	dpavlin	377	$args =~ s{^[\?\+\s]}{};
53	dpavlin	384	warn "# class $class method $method args '$args'", $pipe ? " pipe args " . join(',',keys %$pipe) : '' if $self->debug;
54	dpavlin	300	map {
55	dpavlin	377	my ( $name, $value ) = ( $1, $2 ) if m{^([^=]+)=(.+)$} \|\| confess "can't parse '$_'";
56	dpavlin	300	$params->{$name} = $value;
57	dpavlin	996	} split(/&/, $args)
58	dpavlin	300	}
59	dpavlin	386
60			my ( $html, $default ) = Frey::Action->new( class => $class, params => $params )->params_form;
61	dpavlin	414	warn "$class need more params than ",dump( $default ) if $html && $self->debug; # FIXME replace with query
62	dpavlin	386
63	dpavlin	451	warn "# pipe $part" if $self->debug;
64	dpavlin	457	my $o = $self->new_frey_class( $class, $default );
65	dpavlin	923
66			# XXX copy depends from parts of pipe
67			if ( $o->can('depends') ) {
68			$o->depends;
69			my $current_head;
70	dpavlin	933	$current_head->{$_}++ foreach $self->head;
71	dpavlin	923	foreach ( $o->head ) {
72			next if $current_head->{$_}++;
73			$self->add_head( $_ );
74			}
75			}
76
77	dpavlin	451	my $result = $o->$method;
78			warn "# result ",length( $result ), " bytes ", ref($result);
79
80	dpavlin	933	my $current_status;
81			$current_status->{$_}++ foreach $self->status;
82			foreach ( $o->status ) {
83			next if $current_status->{$_}++;
84			$self->add_status( $_ );
85			warn "# pipe add_status: $_";
86			}
87	dpavlin	519
88	dpavlin	451	$self->content_type( $o->content_type ) if $o->can('content_type');
89
90	dpavlin	327	$out = $result;
91	dpavlin	455	$method =~ s{^as_}{};
92	dpavlin	300	$pipe = { $method => $result };
93	dpavlin	953	push @parts, { $class . '->' . $method => $result };
94	dpavlin	300	} else {
95			die "don't know what to do with '$part' from ",$self->pipe;
96			}
97			}
98
99	dpavlin	953	$pipe = $self->pipe;
100	dpavlin	861
101	dpavlin	953	$out = $self->error(
102			qq\|<a href="$pipe" title="copy pipe"><tt>$pipe</tt></a> = $out not scalar\n\|
103			. $self->html_dump($out)
104			) if ref $out;
105
106	dpavlin	418	return $out;
107	dpavlin	300	}
108
109	dpavlin	1133	__PACKAGE__->meta->make_immutable;
110			no Moose;
111
112	dpavlin	300	1;