use strict;
use vars qw($VERSION);
use constant IS_WIN32 => ( $^O =~ /^(MS)?Win32$/ );
use constant IS_MACOS => ( $^O eq 'MacOS' );
use constant IS_VMS => ( $^O eq 'VMS' );
$SIG{CHLD} = sub { wait };
=head1 NAME
TAPx::Parser::Source - Stream output from some source
=head1 VERSION
Version 0.50_02
=cut
$VERSION = '0.50_02';
=head1 DESCRIPTION
Takes a command and hopefully returns a stream from it.
=head1 SYNOPSIS
use TAPx::Parser::Source;
my $source = TAPx::Parser::Source->new;
my $stream = $source->source('/usr/bin/ruby mytest.rb')->get_stream;
##############################################################################
=head1 METHODS
=head2 Class methods
=head3 C<new>
my $source = TAPx::Parser::Source->new;
Returns a new C<TAPx::Parser::Source> object.
=cut
sub new {
my $class = shift;
_autoflush( \*STDOUT );
_autoflush( \*STDERR );
bless { switches => [] }, $class;
}
##############################################################################
=head2 Instance methods
=head3 C<source>
my $source = $source->source;
$source->source('./some_prog some_test_file');
Getter/setter for the source. The source should generally consist of
something which, when executed with a piped open, should return a filehandle
which returns successive rows of TAP.
=cut
sub source {
my $self = shift;
return $self->{source} unless @_;
$self->{source} = shift;
return $self;
}
##############################################################################
=head3 C<get_stream>
my $stream = $source->get_stream;
Returns a stream of the output generated by executing C<source>.
=cut
sub get_stream {
my ($self) = @_;
my $command = $self->_get_command;
# redirecting STDERR to STDOUT seems to keep them in sync
# but I lose a bit of formatting for some reason
my $stdout = IO::Select->new();
my $stdout_handle = IO::Handle->new();
$stdout_handle->autoflush(1);
$stdout->add( \*STDOUT );
$stdout->add($stdout_handle);
if ( my $pid = open3( undef, $stdout_handle, undef, $command ) ) {
return TAPx::Parser::Iterator->new($stdout_handle);
}
else {
$self->exit( $? >> 8 );
$self->error("Could not execute ($command): $!");
return;
}
}
sub _get_command { shift->source }
##############################################################################
=head3 C<error>
unless ( my $stream = $source->get_stream ) {
die $source->error;
}
If a stream cannot be created, this method will return the error.
=cut
sub error {
my $self = shift;
return $self->{error} unless @_;
$self->{error} = shift;
return $self;
}
##############################################################################
=head3 C<exit>
my $exit = $source->exit;
Returns the exit status of the process I<if and only if> an error occurs in
opening the file.
=cut
sub exit {
my $self = shift;
return $self->{exit} unless @_;
$self->{exit} = shift;
return $self;
}
# Turns on autoflush for the handle passed
sub _autoflush {
my $flushed = shift;
my $old_fh = select $flushed;
$| = 1;
select $old_fh;
}
sub _croak {
my $self = shift;
require Carp;
Carp::croak(@_);
}
1;