I've tried passing perl pointers to Cocoa methods using the
PerlObjCBridge. I can't get it to work, probably because Perl
pointers "don't let you peek and poke at raw memory locations" (Adv
Perl Programming). Does anyone know of a way to get this to work?
For example, I'm trying to pass an int by reference:
#!/usr/bin/perl
use Foundation;
my $value;
$rawdata = NSString->stringWithFormat_("12358D");
$scanner = NSScanner->scannerWithString_( $rawdata );
$scanner->scanHexInt_( \$value );
print $value;
Nothing prints. Here is the Cocoa code, which works.
#import <Foundation/Foundation.h>
int main (int argc, const char * argv[]) {
NSAutoreleasePool * pool = [[NSAutoreleasePool alloc] init];
int val;
NSString *rawdata = [NSString stringWithFormat:@"12358D"];
NSScanner *scanner = [NSScanner scannerWithString:rawdata];
[scanner scanHexInt:&val];
NSLog (@"%d", val);
[pool release];
return 0;
}
Another example is this, which tries to pass a pointer to raw bytes.
However, I may not have a full understanding of this code, as I don't
really work with raw data much (pack, and dataWithBytes expects a
"const void *"). (I've tried many different forms of the following
code, and I haven't gotten anything to work correctly).
#!/usr/bin/perl
use Foundation;
$bytes = pack ("H*", "12358D" );
$data = NSData->dataWithBytes_length_( \$bytes, length $bytes );
print $data->description->cString();
--
James Reynolds
http://james.magnusviri.com
[EMAIL PROTECTED] - [EMAIL PROTECTED]
