What you are looking for is: if ( $node->{node} )
However, is a little recursion OK?
print_nodes($data);
sub print_nodes {
my $data = shift;
foreach my $node ( @{ $data->{node} } ) {
print $node->{name} . ": " . $node->{text} . "\n";
if ( $node->{node} ) {
print_nodes($node);
}
}
}
This should work regardless of how deep the nodes go; however, it doesn't indent:
1st node: Text of 1st node
2nd node: Text of 2nd node
subnode A: Text of subnode A
subnode B: Text of subnode B
3rd node: Text of 3rd node
EDITED TO ADD INDENTATION:
print_nodes( $data, 0 );
sub print_nodes {
my ( $data, $depth ) = @_;
my $tab_width = 4;
foreach my $node ( @{ $data->{node} } ) {
my $indent = " " x $depth x $tab_width;
print $indent . $node->{name} . ": " . $node->{text} . "\n";
if ( $node->{node} ) {
print_nodes( $node, $depth + 1 );
}
}
}
1st node: Text of 1st node
2nd node: Text of 2nd node
subnode A: Text of subnode A
subnode B: Text of subnode B
3rd node: Text of 3rd node