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inc/inc_IPC-Cmd/IPC/Cmd.pm  view on Meta::CPAN

      close($child_info_socket);

      my $child_exit_code;

      # allow both external programs
      # and internal perl calls
      if (!ref($cmd)) {
        $child_exit_code = open3_run($cmd, {
          'parent_info' => $parent_info_socket,
          'parent_stdout' => $parent_stdout_socket,
          'parent_stderr' => $parent_stderr_socket,
          'child_stdin' => $opts->{'child_stdin'},
          });
      }
      elsif (ref($cmd) eq 'CODE') {
        $child_exit_code = $cmd->({
          'opts' => $opts,
          'parent_info' => $parent_info_socket,
          'parent_stdout' => $parent_stdout_socket,
          'parent_stderr' => $parent_stderr_socket,
          'child_stdin' => $opts->{'child_stdin'},
          });
      }
      else {
        print $parent_stderr_socket "Invalid command reference: " . ref($cmd) . "\n";
        $child_exit_code = 1;
      }

      close($parent_stdout_socket);
      close($parent_stderr_socket);
      close($parent_info_socket);

      if ($opts->{'child_END'} && ref($opts->{'child_END'}) eq 'CODE') {
        $opts->{'child_END'}->();
      }

      POSIX::_exit $child_exit_code;
    }
}

sub run {
    ### container to store things in
    my $self = bless {}, __PACKAGE__;

    my %hash = @_;

    ### if the user didn't provide a buffer, we'll store it here.
    my $def_buf = '';

    my($verbose,$cmd,$buffer,$timeout);
    my $tmpl = {
        verbose => { default  => $VERBOSE,  store => \$verbose },
        buffer  => { default  => \$def_buf, store => \$buffer },
        command => { required => 1,         store => \$cmd,
                     allow    => sub { !ref($_[0]) or ref($_[0]) eq 'ARRAY' },
        },
        timeout => { default  => 0,         store => \$timeout },
    };

    unless( check( $tmpl, \%hash, $VERBOSE ) ) {
        Carp::carp( loc( "Could not validate input: %1",
                         Params::Check->last_error ) );
        return;
    };

    $cmd = _quote_args_vms( $cmd ) if IS_VMS;

    ### strip any empty elements from $cmd if present
    if ( $ALLOW_NULL_ARGS ) {
      $cmd = [ grep { defined } @$cmd ] if ref $cmd;
    }
    else {
      $cmd = [ grep { defined && length } @$cmd ] if ref $cmd;
    }

    my $pp_cmd = (ref $cmd ? "@$cmd" : $cmd);
    print loc("Running [%1]...\n", $pp_cmd ) if $verbose;

    ### did the user pass us a buffer to fill or not? if so, set this
    ### flag so we know what is expected of us
    ### XXX this is now being ignored. in the future, we could add diagnostic
    ### messages based on this logic
    #my $user_provided_buffer = $buffer == \$def_buf ? 0 : 1;

    ### buffers that are to be captured
    my( @buffer, @buff_err, @buff_out );

    ### capture STDOUT
    my $_out_handler = sub {
        my $buf = shift;
        return unless defined $buf;

        print STDOUT $buf if $verbose;
        push @buffer,   $buf;
        push @buff_out, $buf;
    };

    ### capture STDERR
    my $_err_handler = sub {
        my $buf = shift;
        return unless defined $buf;

        print STDERR $buf if $verbose;
        push @buffer,   $buf;
        push @buff_err, $buf;
    };


    ### flag to indicate we have a buffer captured
    my $have_buffer = $self->can_capture_buffer ? 1 : 0;

    ### flag indicating if the subcall went ok
    my $ok;

    ### dont look at previous errors:
    local $?;
    local $@;
    local $!;

    ### we might be having a timeout set
    eval {