Function

CFURLCreatePropertyFromResource(_:_:_:_:)

Returns a given property specified by a given URL and property string.

Declaration

func CFURLCreatePropertyFromResource(_ alloc: CFAllocator!, _ url: CFURL!, _ property: CFString!, _ errorCode: UnsafeMutablePointer<Int32>!) -> CFTypeRef!

Parameters

allocator

The allocator to use to to allocate memory for the new CFType object for the requested property. Pass NULL or kCFAllocatorDefault to use the current default allocator.

url

The CFURL object referring to the resource whose properties are loaded.

property

The name of the property you wish to load. Pass one of the provided string constants indicating the property. See File URL Properties and HTTP URL Properties for the list of available properties.

errorCode

On return, 0 if successful, otherwise an error code indicating the nature of the problem. See CFURLError for a list of possible error codes.

Return Value

If successful, the requested property as a CFType object, NULL otherwise. Ownership follows the The Create Rule.

Discussion

This is a convenience function for retrieving individual property values which calls through to CFURLCreateDataAndPropertiesFromResource(_:_:_:_:_:_:).

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