# CFPropertyListCreateWithStream(_:_:_:_:_:_:) Create and return a property list with a CFReadStream input. ``` func CFPropertyListCreateWithStream(_ allocator: CFAllocator!, _ stream: CFReadStream!, _ streamLength: CFIndex, _ options: CFOptionFlags, _ format: UnsafeMutablePointer!, _ error: UnsafeMutablePointer?>!) -> Unmanaged! ``` ## Parameters `allocator` The allocator to use to allocate memory for the new property list object. Pass `NULL` or kCFAllocatorDefault to use the current default allocator. `stream` A CFReadStream that contains a serialized representation of a property list. `streamLength` The number of bytes to read from the stream. Pass `0` to read until the end of the stream is detected. `options` A [`CFPropertyListMutabilityOptions`](/documentation/CoreFoundation/CFPropertyListMutabilityOptions) constant to specify the mutability of the returned property list—see [Property List Mutability Options](/documentation/CoreFoundation/property_list_mutability_options) for possible values. `format` If this parameter is non-`NULL`, on return it will be set to the format of the data. See [`CFPropertyListFormat`](/documentation/CoreFoundation/CFPropertyListFormat) for possible values. `error` If this parameter is non-`NULL`, if an error occurs, on return this will contain a CFError error describing the problem. Ownership follows the [The Create Rule](https://developer.apple.com/library/archive/documentation/CoreFoundation/Conceptual/CFMemoryMgmt/Concepts/Ownership.html#//apple_ref/doc/uid/20001148-103029). ## Return Value A new property list created from the data in `stream`. If an error occurs while parsing the data, returns `NULL`. Ownership follows the [The Create Rule](https://developer.apple.com/library/archive/documentation/CoreFoundation/Conceptual/CFMemoryMgmt/Concepts/Ownership.html#//apple_ref/doc/uid/20001148-103029). ## Discussion --- Copyright © 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)