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inc/YAML/Tiny.pm  view on Meta::CPAN

}

# Save an object to a string
sub write_string {
	my $self = shift;
	return '' unless @$self;

	# Iterate over the documents
	my $indent = 0;
	my @lines  = ();
	foreach my $cursor ( @$self ) {
		push @lines, '---';

		# An empty document
		if ( ! defined $cursor ) {
			# Do nothing

		# A scalar document
		} elsif ( ! ref $cursor ) {
			$lines[-1] .= ' ' . $self->_write_scalar( $cursor, $indent );

		# A list at the root
		} elsif ( ref $cursor eq 'ARRAY' ) {
			unless ( @$cursor ) {
				$lines[-1] .= ' []';
				next;
			}
			push @lines, $self->_write_array( $cursor, $indent, {} );

		# A hash at the root
		} elsif ( ref $cursor eq 'HASH' ) {
			unless ( %$cursor ) {
				$lines[-1] .= ' {}';
				next;
			}
			push @lines, $self->_write_hash( $cursor, $indent, {} );

		} else {
			Carp::croak("Cannot serialize " . ref($cursor));
		}
	}

	join '', map { "$_\n" } @lines;
}

sub _write_scalar {
	my $string = $_[1];
	return '~'  unless defined $string;
	return "''" unless length  $string;