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// Copyright 2013 The Servo Project Developers. See the COPYRIGHT
// file at the top-level directory of this distribution.
//
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
// option. This file may not be copied, modified, or distributed
// except according to those terms.
//! Core Foundation byte buffers.
pub use core_foundation_sys::data::*;
use core_foundation_sys::base::CFIndex;
use core_foundation_sys::base::{kCFAllocatorDefault};
use std::ops::Deref;
use std::slice;
use base::{CFIndexConvertible, TCFType};
declare_TCFType!{
/// A byte buffer.
CFData, CFDataRef
}
impl_TCFType!(CFData, CFDataRef, CFDataGetTypeID);
impl_CFTypeDescription!(CFData);
impl CFData {
pub fn from_buffer(buffer: &[u8]) -> CFData {
unsafe {
let data_ref = CFDataCreate(kCFAllocatorDefault,
buffer.as_ptr(),
buffer.len().to_CFIndex());
TCFType::wrap_under_create_rule(data_ref)
}
}
/// Returns a pointer to the underlying bytes in this data. Note that this byte buffer is
/// read-only.
#[inline]
pub fn bytes<'a>(&'a self) -> &'a [u8] {
unsafe {
slice::from_raw_parts(CFDataGetBytePtr(self.0), self.len() as usize)
}
}
/// Returns the length of this byte buffer.
#[inline]
pub fn len(&self) -> CFIndex {
unsafe {
CFDataGetLength(self.0)
}
}
}
impl Deref for CFData {
type Target = [u8];
#[inline]
fn deref(&self) -> &[u8] {
self.bytes()
}
}
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