Struct CFData 

pub struct CFData { /* private fields */ }

Available on crate feature CFData only.

Apple’s documentation

This is toll-free bridged with NSData.

Implementations

impl CFData

pub fn from_bytes(bytes: &[u8]) -> CFRetained<Self>

Creates a new CFData from a byte slice.

pub fn from_buffer(bytes: &[u8]) -> CFRetained<Self>

👎Deprecated: renamed to CFData::from_bytes

Alias for easier transition from the core-foundation crate.

pub fn from_static_bytes(bytes: &'static [u8]) -> CFRetained<Self>

Creates a new CFData from a 'static byte slice.

This may be slightly more efficient than CFData::from_bytes, as it may be able to re-use the existing buffer (since we know it won’t be deallocated).

pub fn len(&self) -> usize

The number of bytes contained by the CFData.

pub fn is_empty(&self) -> bool

Whether the CFData is empty.

pub unsafe fn as_bytes_unchecked(&self) -> &[u8]

The underlying bytes in the CFData.

Safety

The CFData must not be mutated for the lifetime of the returned string. Consider using to_vec instead if this requirement is a bit difficult to uphold.

pub fn to_vec(&self) -> Vec<u8>

Available on crate feature alloc only.

Copy the contents of the CFData into a new Vec.

impl CFData

pub unsafe fn new( allocator: Option<&CFAllocator>, bytes: *const u8, length: CFIndex, ) -> Option<CFRetained<CFData>>

Safety

• allocator might not allow None.
• bytes must be a valid pointer.

pub unsafe fn with_bytes_no_copy( allocator: Option<&CFAllocator>, bytes: *const u8, length: CFIndex, bytes_deallocator: Option<&CFAllocator>, ) -> Option<CFRetained<CFData>>

Safety

• allocator might not allow None.
• bytes must be a valid pointer.
• bytes_deallocator might not allow None.

pub fn new_copy( allocator: Option<&CFAllocator>, the_data: Option<&CFData>, ) -> Option<CFRetained<CFData>>

impl CFData

pub fn length(&self) -> CFIndex

pub fn byte_ptr(&self) -> *const u8

impl CFData

pub unsafe fn bytes(&self, range: CFRange, buffer: *mut u8)

Safety

buffer must be a valid pointer.

impl CFData

pub unsafe fn find( &self, data_to_find: Option<&CFData>, search_range: CFRange, compare_options: CFDataSearchFlags, ) -> CFRange

Safety

data_to_find might not allow None.

Methods from Deref<Target = CFType>

pub fn downcast_ref<T: ConcreteType>(&self) -> Option<&T>

Attempt to downcast the type to that of type T.

This is the reference-variant. Use CFRetained::downcast if you want to convert a retained type. See also ConcreteType for more details on which types support being converted to.

pub fn retain_count(&self) -> usize

Get the reference count of the object.

This function may be useful for debugging. You normally do not use this function otherwise.

Beware that some things (like CFNumbers, small CFStrings etc.) may not have a normal retain count for optimization purposes, and can return usize::MAX in that case.

Trait Implementations

impl AsRef<AnyObject> for CFData

fn as_ref(&self) -> &AnyObject

Converts this type into a shared reference of the (usually inferred) input type.

impl AsRef<CFData> for CFData

fn as_ref(&self) -> &Self

Converts this type into a shared reference of the (usually inferred) input type.

impl AsRef<CFData> for CFMutableData

fn as_ref(&self) -> &CFData

Converts this type into a shared reference of the (usually inferred) input type.

impl AsRef<CFType> for CFData

fn as_ref(&self) -> &CFType

Converts this type into a shared reference of the (usually inferred) input type.

impl Borrow<AnyObject> for CFData

fn borrow(&self) -> &AnyObject

Immutably borrows from an owned value.

impl Borrow<CFData> for CFMutableData

fn borrow(&self) -> &CFData

Immutably borrows from an owned value.

impl Borrow<CFType> for CFData

fn borrow(&self) -> &CFType

Immutably borrows from an owned value.

impl ConcreteType for CFData

fn type_id() -> CFTypeID

Get the unique CFTypeID identifier for the type.

impl Debug for CFData

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Deref for CFData

type Target = CFType

The resulting type after dereferencing.

fn deref(&self) -> &Self::Target

Dereferences the value.

impl Hash for CFData

fn hash<H: Hasher>(&self, state: &mut H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl Message for CFData

fn retain(&self) -> Retained<Self>

where Self: Sized,

Increment the reference count of the receiver.

impl PartialEq for CFData

fn eq(&self, other: &Self) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl RefEncode for CFData

const ENCODING_REF: Encoding

The Objective-C type-encoding for a reference of this type.

impl Type for CFData

fn retain(&self) -> CFRetained<Self>

where Self: Sized,

Increment the reference count of the receiver.

fn as_concrete_TypeRef(&self) -> &Self

👎Deprecated: this is redundant

Helper for easier transition from the core-foundation crate.

unsafe fn wrap_under_get_rule(ptr: *const Self) -> CFRetained<Self>

where Self: Sized,

👎Deprecated: use CFRetained::retain

Helper for easier transition from the core-foundation crate.

fn as_CFTypeRef(&self) -> &CFType

where Self: AsRef<CFType>,

👎Deprecated: this is redundant (CF types deref to CFType)

Helper for easier transition from the core-foundation crate.

unsafe fn wrap_under_create_rule(ptr: *const Self) -> CFRetained<Self>

where Self: Sized,

👎Deprecated: use CFRetained::from_raw

Helper for easier transition from the core-foundation crate.

impl Eq for CFData