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package TAP::Parser::SourceHandler::Executable;
use strict;
use warnings;
use TAP::Parser::IteratorFactory ();
use TAP::Parser::Iterator::Process ();
use base 'TAP::Parser::SourceHandler';
TAP::Parser::IteratorFactory->register_handler(__PACKAGE__);
=head1 NAME
TAP::Parser::SourceHandler::Executable - Stream output from an executable TAP source
=head1 VERSION
Version 3.42
=cut
our $VERSION = '3.42';
=head1 SYNOPSIS
use TAP::Parser::Source;
use TAP::Parser::SourceHandler::Executable;
my $source = TAP::Parser::Source->new->raw(['/usr/bin/ruby', 'mytest.rb']);
$source->assemble_meta;
my $class = 'TAP::Parser::SourceHandler::Executable';
my $vote = $class->can_handle( $source );
my $iter = $class->make_iterator( $source );
=head1 DESCRIPTION
This is an I<executable> L<TAP::Parser::SourceHandler> - it has 2 jobs:
1. Figure out if the L<TAP::Parser::Source> it's given is an executable
command (L</can_handle>).
2. Creates an iterator for executable commands (L</make_iterator>).
Unless you're writing a plugin or subclassing L<TAP::Parser>, you
probably won't need to use this module directly.
=head1 METHODS
=head2 Class Methods
=head3 C<can_handle>
my $vote = $class->can_handle( $source );
Only votes if $source looks like an executable file. Casts the
following votes:
0.9 if it's a hash with an 'exec' key
0.8 if it's a .bat file
0.75 if it's got an execute bit set
=cut
sub can_handle {
my ( $class, $src ) = @_;
my $meta = $src->meta;
if ( $meta->{is_file} ) {
my $file = $meta->{file};
return 0.85 if $file->{execute} && $file->{binary};
return 0.8 if $file->{lc_ext} eq '.bat';
return 0.25 if $file->{execute};
}
elsif ( $meta->{is_hash} ) {
return 0.9 if $src->raw->{exec};
}
return 0;
}
=head3 C<make_iterator>
my $iterator = $class->make_iterator( $source );
Returns a new L<TAP::Parser::Iterator::Process> for the source.
C<$source-E<gt>raw> must be in one of the following forms:
{ exec => [ @exec ] }
[ @exec ]
$file
C<croak>s on error.
=cut
sub make_iterator {
my ( $class, $source ) = @_;
my $meta = $source->meta;
my @command;
if ( $meta->{is_hash} ) {
@command = @{ $source->raw->{exec} || [] };
}
elsif ( $meta->{is_scalar} ) {
@command = ${ $source->raw };
}
elsif ( $meta->{is_array} ) {
@command = @{ $source->raw };
}
$class->_croak('No command found in $source->raw!') unless @command;
$class->_autoflush( \*STDOUT );
$class->_autoflush( \*STDERR );
push @command, @{ $source->test_args || [] };
return $class->iterator_class->new(
{ command => \@command,
merge => $source->merge
}
);
}
=head3 C<iterator_class>
The class of iterator to use, override if you're sub-classing. Defaults
to L<TAP::Parser::Iterator::Process>.
=cut
use constant iterator_class => 'TAP::Parser::Iterator::Process';
# Turns on autoflush for the handle passed
sub _autoflush {
my ( $class, $flushed ) = @_;
my $old_fh = select $flushed;
$| = 1;
select $old_fh;
}
1;
=head1 SUBCLASSING
Please see L<TAP::Parser/SUBCLASSING> for a subclassing overview.
=head2 Example
package MyRubySourceHandler;
use strict;
use Carp qw( croak );
use TAP::Parser::SourceHandler::Executable;
use base 'TAP::Parser::SourceHandler::Executable';
# expect $handler->(['mytest.rb', 'cmdline', 'args']);
sub make_iterator {
my ($self, $source) = @_;
my @test_args = @{ $source->test_args };
my $rb_file = $test_args[0];
croak("error: Ruby file '$rb_file' not found!") unless (-f $rb_file);
return $self->SUPER::raw_source(['/usr/bin/ruby', @test_args]);
}
=head1 SEE ALSO
L<TAP::Object>,
L<TAP::Parser>,
L<TAP::Parser::IteratorFactory>,
L<TAP::Parser::SourceHandler>,
L<TAP::Parser::SourceHandler::Perl>,
L<TAP::Parser::SourceHandler::File>,
L<TAP::Parser::SourceHandler::Handle>,
L<TAP::Parser::SourceHandler::RawTAP>
=cut