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lib/Apache/Config/Preproc/include.pm  view on Meta::CPAN

				  '-ontop');
			$inc->add('directive',
				  '$POP$' => 0,
				  '-onbottom');
			# NOTE: make sure each item is cloned
			push @$repl, map { $_->clone } $inc->select;
		    } else {
			croak $Apache::Admin::Config::ERROR;
		    }
		}
	    }
	    return 1;
	} elsif ($d->name eq '$PUSH$') {
	    if ($d->value =~ /^\"(.+)\" (-?\d+) (-?\d+)$/) {
		$self->context_push($1, $2, $3);
	    }
	    return 1;
	} elsif ($d->name eq '$POP$') {
	    $self->context_pop;
	    return 1;
	}
    }
	    
    return 0;
}

sub probe {
    my ($self, @servlist) = @_;
    unless (@servlist) {
	@servlist = qw(/usr/sbin/httpd /usr/sbin/apache2);
    }

    open(my $nullout, '>', File::Spec->devnull);
    open(my $nullin, '<', File::Spec->devnull);
    foreach my $serv (@servlist) {
        use Symbol 'gensym';
        my $fd = gensym;
        eval {
        	if (my $pid = open3($nullin, $fd, $nullout, $serv, '-V')) {
			while (<$fd>) {
			    chomp;
			    if (/^\s+-D\s+HTTPD_ROOT=(.+)\s*$/) {
				$self->server_root($1);
				last;
			    }
			}
		}
	};
	close $fd;
	last unless ($@)
    }
    close $nullin;
    close $nullout;
}    

sub check_included {
    my ($self, $file) = @_;
    return $self->${ \ $self->{check_included} }($file);
}

# Default included file table for unix-like OSes
sub _check_included_stat {
    my ($self, $file) = @_;
    my ($dev,$ino) = stat($file) or return 0;
    return grep { $_->{dev} == $dev && $_->{ino} == $ino } @{$self->{context}};
}

# Path-based file table, for defective OSes (MSWin32)
sub _check_included_path {
    my ($self, $file) = @_;
    my $path = abs_path($file);
    return grep { $_->{file} eq $path } @{$self->{context}}; 
}

1;

__END__

=head1 NAME    

Apache::Config::Preproc::include - expand Include statements

=head1 SYNOPSIS

    $x = new Apache::Config::Preproc '/path/to/httpd.conf',
                -expand => [ qw(include) ];

    $x = new Apache::Config::Preproc '/path/to/httpd.conf',
                -expand => [
                    { include => [ server_root => $dir ] }
                ];

    $x = new Apache::Config::Preproc '/path/to/httpd.conf',
                -expand => [
                    { include => [ probe => [ '/usr/sbin/httpd' ] ] }
                ];

=head1 DESCRIPTION

Processes B<Include> and B<IncludeOptional> statements and replaces them
with the contents of the files supplied in their arguments. If the argument
is not an absolute file name, it is searched in the server root directory.

Keyword arguments:

=over 4

=item B<server_root =E<gt>> I<DIR>

Sets default server root value to I<DIR>.

=item B<probe =E<gt>> I<LISTREF> | B<1>

Determine the default server root value by analyzing the output of
B<httpd -V>. If I<LISTREF> is given, it contains alternative pathnames
of the Apache B<httpd> binary. Otherwise, 

    probe => 1

is a shorthand for