ITOSAComponent.m

#import "ITOSAComponent.h"

// Need to add a constant data store containing all available component instances... could be lazy and build it on class +load.

@implementation ITOSAComponent

+ (ITOSAComponent *)appleScriptComponent
{
	return [[[ITOSAComponent alloc] initWithSubtype:kAppleScriptSubtype] autorelease];
}

+ (ITOSAComponent *)componentWithCarbonComponent:(Component)component
{
	return [[[ITOSAComponent alloc] initWithComponent:component] autorelease];
}

+ (NSArray *)availableComponents
{
	Component currentComponent = 0;
	ComponentDescription cd;
	NSMutableArray *components = [[NSMutableArray alloc] init];
	
	cd.componentType = kOSAComponentType;
	cd.componentSubType = 0;
	cd.componentManufacturer = 0;
	cd.componentFlags = 0;
	cd.componentFlagsMask = 0;
	while ((currentComponent = FindNextComponent(currentComponent, &cd)) != 0) {
		[components addObject:[ITOSAComponent componentWithCarbonComponent:currentComponent]];
	}
	return [NSArray arrayWithArray:[components autorelease]];
}

- (id)initWithSubtype:(unsigned long)subtype
{
	ComponentDescription cd;
	cd.componentType = kOSAComponentType;
	cd.componentSubType = subtype;
	cd.componentManufacturer = 0;
	cd.componentFlags = 0;
	cd.componentFlagsMask = 0;
	Component temp = FindNextComponent(0, &cd);
	if ( (self = [self initWithComponent:temp]) ) {
	}
	return self;
}

- (id)initWithComponent:(Component)component;
{
	if ( (self = [super init]) ) {
		Handle componentName = NewHandle(0);
		Handle componentInfo = NewHandle(0);
		ComponentDescription description;
		NSMutableDictionary *information;
		
		_component = component;
		_componentInstance = OpenComponent(component);
		
		if (GetComponentInfo(component, &description, componentName, componentInfo, nil) != 0) {
			NSLog(@"FATAL ERROR!");
			return nil;
		}
		
		information = [[NSMutableDictionary alloc] init];
		
		AEDesc name;
		Ptr buffer;
		Size length;
		OSAScriptingComponentName(_componentInstance, &name);
		length = AEGetDescDataSize(&name);
		buffer = malloc(length);

		AEGetDescData(&name, buffer, length);
		AEDisposeDesc(&name);
		[information setObject:[NSString stringWithCString:buffer length:length] forKey:@"ITOSAComponentName"];
		free(buffer);
		buffer = NULL;
		
		//[information setObject:[[[NSString alloc] initWithBytes:componentName length:GetHandleSize(componentName) encoding:NSASCIIStringEncoding] autorelease] forKey:@"ITOSAComponentName"];
		[information setObject:[[[NSString alloc] initWithBytes:componentInfo length:GetHandleSize(componentInfo) encoding:NSASCIIStringEncoding] autorelease] forKey:@"ITOSAComponentInfo"];
		[information setObject:[NSNumber numberWithUnsignedLong:description.componentSubType] forKey:@"ITOSAComponentSubtype"];
		[information setObject:[NSNumber numberWithUnsignedLong:description.componentManufacturer] forKey:@"ITOSAComponentManufacturer"];
		_information = [information copy];
	}
	return self;
}

- (void)dealloc
{
	[_information release];
}

- (NSString *)description
{
	return [_information objectForKey:@"ITOSAComponentName"];
}

- (Component)component
{
	return _component;
}

- (ComponentInstance)componentInstance
{
	return _componentInstance;
}

- (NSDictionary *)information
{
	return _information;
}

@end