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Diffstat (limited to 'vendor/byteorder/src/io.rs')
| -rw-r--r-- | vendor/byteorder/src/io.rs | 1592 |
1 files changed, 0 insertions, 1592 deletions
diff --git a/vendor/byteorder/src/io.rs b/vendor/byteorder/src/io.rs deleted file mode 100644 index dfad2ca..0000000 --- a/vendor/byteorder/src/io.rs +++ /dev/null @@ -1,1592 +0,0 @@ -use std::{ - io::{self, Result}, - slice, -}; - -use crate::ByteOrder; - -/// Extends [`Read`] with methods for reading numbers. (For `std::io`.) -/// -/// Most of the methods defined here have an unconstrained type parameter that -/// must be explicitly instantiated. Typically, it is instantiated with either -/// the [`BigEndian`] or [`LittleEndian`] types defined in this crate. -/// -/// # Examples -/// -/// Read unsigned 16 bit big-endian integers from a [`Read`]: -/// -/// ```rust -/// use std::io::Cursor; -/// use byteorder::{BigEndian, ReadBytesExt}; -/// -/// let mut rdr = Cursor::new(vec![2, 5, 3, 0]); -/// assert_eq!(517, rdr.read_u16::<BigEndian>().unwrap()); -/// assert_eq!(768, rdr.read_u16::<BigEndian>().unwrap()); -/// ``` -/// -/// [`BigEndian`]: enum.BigEndian.html -/// [`LittleEndian`]: enum.LittleEndian.html -/// [`Read`]: https://doc.rust-lang.org/std/io/trait.Read.html -pub trait ReadBytesExt: io::Read { - /// Reads an unsigned 8 bit integer from the underlying reader. - /// - /// Note that since this reads a single byte, no byte order conversions - /// are used. It is included for completeness. - /// - /// # Errors - /// - /// This method returns the same errors as [`Read::read_exact`]. - /// - /// [`Read::read_exact`]: https://doc.rust-lang.org/std/io/trait.Read.html#method.read_exact - /// - /// # Examples - /// - /// Read unsigned 8 bit integers from a `Read`: - /// - /// ```rust - /// use std::io::Cursor; - /// use byteorder::ReadBytesExt; - /// - /// let mut rdr = Cursor::new(vec![2, 5]); - /// assert_eq!(2, rdr.read_u8().unwrap()); - /// assert_eq!(5, rdr.read_u8().unwrap()); - /// ``` - #[inline] - fn read_u8(&mut self) -> Result<u8> { - let mut buf = [0; 1]; - self.read_exact(&mut buf)?; - Ok(buf[0]) - } - - /// Reads a signed 8 bit integer from the underlying reader. - /// - /// Note that since this reads a single byte, no byte order conversions - /// are used. It is included for completeness. - /// - /// # Errors - /// - /// This method returns the same errors as [`Read::read_exact`]. - /// - /// [`Read::read_exact`]: https://doc.rust-lang.org/std/io/trait.Read.html#method.read_exact - /// - /// # Examples - /// - /// Read signed 8 bit integers from a `Read`: - /// - /// ```rust - /// use std::io::Cursor; - /// use byteorder::ReadBytesExt; - /// - /// let mut rdr = Cursor::new(vec![0x02, 0xfb]); - /// assert_eq!(2, rdr.read_i8().unwrap()); - /// assert_eq!(-5, rdr.read_i8().unwrap()); - /// ``` - #[inline] - fn read_i8(&mut self) -> Result<i8> { - let mut buf = [0; 1]; - self.read_exact(&mut buf)?; - Ok(buf[0] as i8) - } - - /// Reads an unsigned 16 bit integer from the underlying reader. - /// - /// # Errors - /// - /// This method returns the same errors as [`Read::read_exact`]. - /// - /// [`Read::read_exact`]: https://doc.rust-lang.org/std/io/trait.Read.html#method.read_exact - /// - /// # Examples - /// - /// Read unsigned 16 bit big-endian integers from a `Read`: - /// - /// ```rust - /// use std::io::Cursor; - /// use byteorder::{BigEndian, ReadBytesExt}; - /// - /// let mut rdr = Cursor::new(vec![2, 5, 3, 0]); - /// assert_eq!(517, rdr.read_u16::<BigEndian>().unwrap()); - /// assert_eq!(768, rdr.read_u16::<BigEndian>().unwrap()); - /// ``` - #[inline] - fn read_u16<T: ByteOrder>(&mut self) -> Result<u16> { - let mut buf = [0; 2]; - self.read_exact(&mut buf)?; - Ok(T::read_u16(&buf)) - } - - /// Reads a signed 16 bit integer from the underlying reader. - /// - /// # Errors - /// - /// This method returns the same errors as [`Read::read_exact`]. - /// - /// [`Read::read_exact`]: https://doc.rust-lang.org/std/io/trait.Read.html#method.read_exact - /// - /// # Examples - /// - /// Read signed 16 bit big-endian integers from a `Read`: - /// - /// ```rust - /// use std::io::Cursor; - /// use byteorder::{BigEndian, ReadBytesExt}; - /// - /// let mut rdr = Cursor::new(vec![0x00, 0xc1, 0xff, 0x7c]); - /// assert_eq!(193, rdr.read_i16::<BigEndian>().unwrap()); - /// assert_eq!(-132, rdr.read_i16::<BigEndian>().unwrap()); - /// ``` - #[inline] - fn read_i16<T: ByteOrder>(&mut self) -> Result<i16> { - let mut buf = [0; 2]; - self.read_exact(&mut buf)?; - Ok(T::read_i16(&buf)) - } - - /// Reads an unsigned 24 bit integer from the underlying reader. - /// - /// # Errors - /// - /// This method returns the same errors as [`Read::read_exact`]. - /// - /// [`Read::read_exact`]: https://doc.rust-lang.org/std/io/trait.Read.html#method.read_exact - /// - /// # Examples - /// - /// Read unsigned 24 bit big-endian integers from a `Read`: - /// - /// ```rust - /// use std::io::Cursor; - /// use byteorder::{BigEndian, ReadBytesExt}; - /// - /// let mut rdr = Cursor::new(vec![0x00, 0x01, 0x0b]); - /// assert_eq!(267, rdr.read_u24::<BigEndian>().unwrap()); - /// ``` - #[inline] - fn read_u24<T: ByteOrder>(&mut self) -> Result<u32> { - let mut buf = [0; 3]; - self.read_exact(&mut buf)?; - Ok(T::read_u24(&buf)) - } - - /// Reads a signed 24 bit integer from the underlying reader. - /// - /// # Errors - /// - /// This method returns the same errors as [`Read::read_exact`]. - /// - /// [`Read::read_exact`]: https://doc.rust-lang.org/std/io/trait.Read.html#method.read_exact - /// - /// # Examples - /// - /// Read signed 24 bit big-endian integers from a `Read`: - /// - /// ```rust - /// use std::io::Cursor; - /// use byteorder::{BigEndian, ReadBytesExt}; - /// - /// let mut rdr = Cursor::new(vec![0xff, 0x7a, 0x33]); - /// assert_eq!(-34253, rdr.read_i24::<BigEndian>().unwrap()); - /// ``` - #[inline] - fn read_i24<T: ByteOrder>(&mut self) -> Result<i32> { - let mut buf = [0; 3]; - self.read_exact(&mut buf)?; - Ok(T::read_i24(&buf)) - } - - /// Reads an unsigned 32 bit integer from the underlying reader. - /// - /// # Errors - /// - /// This method returns the same errors as [`Read::read_exact`]. - /// - /// [`Read::read_exact`]: https://doc.rust-lang.org/std/io/trait.Read.html#method.read_exact - /// - /// # Examples - /// - /// Read unsigned 32 bit big-endian integers from a `Read`: - /// - /// ```rust - /// use std::io::Cursor; - /// use byteorder::{BigEndian, ReadBytesExt}; - /// - /// let mut rdr = Cursor::new(vec![0x00, 0x00, 0x01, 0x0b]); - /// assert_eq!(267, rdr.read_u32::<BigEndian>().unwrap()); - /// ``` - #[inline] - fn read_u32<T: ByteOrder>(&mut self) -> Result<u32> { - let mut buf = [0; 4]; - self.read_exact(&mut buf)?; - Ok(T::read_u32(&buf)) - } - - /// Reads a signed 32 bit integer from the underlying reader. - /// - /// # Errors - /// - /// This method returns the same errors as [`Read::read_exact`]. - /// - /// [`Read::read_exact`]: https://doc.rust-lang.org/std/io/trait.Read.html#method.read_exact - /// - /// # Examples - /// - /// Read signed 32 bit big-endian integers from a `Read`: - /// - /// ```rust - /// use std::io::Cursor; - /// use byteorder::{BigEndian, ReadBytesExt}; - /// - /// let mut rdr = Cursor::new(vec![0xff, 0xff, 0x7a, 0x33]); - /// assert_eq!(-34253, rdr.read_i32::<BigEndian>().unwrap()); - /// ``` - #[inline] - fn read_i32<T: ByteOrder>(&mut self) -> Result<i32> { - let mut buf = [0; 4]; - self.read_exact(&mut buf)?; - Ok(T::read_i32(&buf)) - } - - /// Reads an unsigned 48 bit integer from the underlying reader. - /// - /// # Errors - /// - /// This method returns the same errors as [`Read::read_exact`]. - /// - /// [`Read::read_exact`]: https://doc.rust-lang.org/std/io/trait.Read.html#method.read_exact - /// - /// # Examples - /// - /// Read unsigned 48 bit big-endian integers from a `Read`: - /// - /// ```rust - /// use std::io::Cursor; - /// use byteorder::{BigEndian, ReadBytesExt}; - /// - /// let mut rdr = Cursor::new(vec![0xb6, 0x71, 0x6b, 0xdc, 0x2b, 0x31]); - /// assert_eq!(200598257150769, rdr.read_u48::<BigEndian>().unwrap()); - /// ``` - #[inline] - fn read_u48<T: ByteOrder>(&mut self) -> Result<u64> { - let mut buf = [0; 6]; - self.read_exact(&mut buf)?; - Ok(T::read_u48(&buf)) - } - - /// Reads a signed 48 bit integer from the underlying reader. - /// - /// # Errors - /// - /// This method returns the same errors as [`Read::read_exact`]. - /// - /// [`Read::read_exact`]: https://doc.rust-lang.org/std/io/trait.Read.html#method.read_exact - /// - /// # Examples - /// - /// Read signed 48 bit big-endian integers from a `Read`: - /// - /// ```rust - /// use std::io::Cursor; - /// use byteorder::{BigEndian, ReadBytesExt}; - /// - /// let mut rdr = Cursor::new(vec![0x9d, 0x71, 0xab, 0xe7, 0x97, 0x8f]); - /// assert_eq!(-108363435763825, rdr.read_i48::<BigEndian>().unwrap()); - /// ``` - #[inline] - fn read_i48<T: ByteOrder>(&mut self) -> Result<i64> { - let mut buf = [0; 6]; - self.read_exact(&mut buf)?; - Ok(T::read_i48(&buf)) - } - - /// Reads an unsigned 64 bit integer from the underlying reader. - /// - /// # Errors - /// - /// This method returns the same errors as [`Read::read_exact`]. - /// - /// [`Read::read_exact`]: https://doc.rust-lang.org/std/io/trait.Read.html#method.read_exact - /// - /// # Examples - /// - /// Read an unsigned 64 bit big-endian integer from a `Read`: - /// - /// ```rust - /// use std::io::Cursor; - /// use byteorder::{BigEndian, ReadBytesExt}; - /// - /// let mut rdr = Cursor::new(vec![0x00, 0x03, 0x43, 0x95, 0x4d, 0x60, 0x86, 0x83]); - /// assert_eq!(918733457491587, rdr.read_u64::<BigEndian>().unwrap()); - /// ``` - #[inline] - fn read_u64<T: ByteOrder>(&mut self) -> Result<u64> { - let mut buf = [0; 8]; - self.read_exact(&mut buf)?; - Ok(T::read_u64(&buf)) - } - - /// Reads a signed 64 bit integer from the underlying reader. - /// - /// # Errors - /// - /// This method returns the same errors as [`Read::read_exact`]. - /// - /// [`Read::read_exact`]: https://doc.rust-lang.org/std/io/trait.Read.html#method.read_exact - /// - /// # Examples - /// - /// Read a signed 64 bit big-endian integer from a `Read`: - /// - /// ```rust - /// use std::io::Cursor; - /// use byteorder::{BigEndian, ReadBytesExt}; - /// - /// let mut rdr = Cursor::new(vec![0x80, 0, 0, 0, 0, 0, 0, 0]); - /// assert_eq!(i64::min_value(), rdr.read_i64::<BigEndian>().unwrap()); - /// ``` - #[inline] - fn read_i64<T: ByteOrder>(&mut self) -> Result<i64> { - let mut buf = [0; 8]; - self.read_exact(&mut buf)?; - Ok(T::read_i64(&buf)) - } - - /// Reads an unsigned 128 bit integer from the underlying reader. - /// - /// # Errors - /// - /// This method returns the same errors as [`Read::read_exact`]. - /// - /// [`Read::read_exact`]: https://doc.rust-lang.org/std/io/trait.Read.html#method.read_exact - /// - /// # Examples - /// - /// Read an unsigned 128 bit big-endian integer from a `Read`: - /// - /// ```rust - /// use std::io::Cursor; - /// use byteorder::{BigEndian, ReadBytesExt}; - /// - /// let mut rdr = Cursor::new(vec![ - /// 0x00, 0x03, 0x43, 0x95, 0x4d, 0x60, 0x86, 0x83, - /// 0x00, 0x03, 0x43, 0x95, 0x4d, 0x60, 0x86, 0x83 - /// ]); - /// assert_eq!(16947640962301618749969007319746179, rdr.read_u128::<BigEndian>().unwrap()); - /// ``` - #[inline] - fn read_u128<T: ByteOrder>(&mut self) -> Result<u128> { - let mut buf = [0; 16]; - self.read_exact(&mut buf)?; - Ok(T::read_u128(&buf)) - } - - /// Reads a signed 128 bit integer from the underlying reader. - /// - /// # Errors - /// - /// This method returns the same errors as [`Read::read_exact`]. - /// - /// [`Read::read_exact`]: https://doc.rust-lang.org/std/io/trait.Read.html#method.read_exact - /// - /// # Examples - /// - /// Read a signed 128 bit big-endian integer from a `Read`: - /// - /// ```rust - /// use std::io::Cursor; - /// use byteorder::{BigEndian, ReadBytesExt}; - /// - /// let mut rdr = Cursor::new(vec![0x80, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]); - /// assert_eq!(i128::min_value(), rdr.read_i128::<BigEndian>().unwrap()); - /// ``` - #[inline] - fn read_i128<T: ByteOrder>(&mut self) -> Result<i128> { - let mut buf = [0; 16]; - self.read_exact(&mut buf)?; - Ok(T::read_i128(&buf)) - } - - /// Reads an unsigned n-bytes integer from the underlying reader. - /// - /// # Errors - /// - /// This method returns the same errors as [`Read::read_exact`]. - /// - /// [`Read::read_exact`]: https://doc.rust-lang.org/std/io/trait.Read.html#method.read_exact - /// - /// # Examples - /// - /// Read an unsigned n-byte big-endian integer from a `Read`: - /// - /// ```rust - /// use std::io::Cursor; - /// use byteorder::{BigEndian, ReadBytesExt}; - /// - /// let mut rdr = Cursor::new(vec![0x80, 0x74, 0xfa]); - /// assert_eq!(8418554, rdr.read_uint::<BigEndian>(3).unwrap()); - #[inline] - fn read_uint<T: ByteOrder>(&mut self, nbytes: usize) -> Result<u64> { - let mut buf = [0; 8]; - self.read_exact(&mut buf[..nbytes])?; - Ok(T::read_uint(&buf[..nbytes], nbytes)) - } - - /// Reads a signed n-bytes integer from the underlying reader. - /// - /// # Errors - /// - /// This method returns the same errors as [`Read::read_exact`]. - /// - /// [`Read::read_exact`]: https://doc.rust-lang.org/std/io/trait.Read.html#method.read_exact - /// - /// # Examples - /// - /// Read an unsigned n-byte big-endian integer from a `Read`: - /// - /// ```rust - /// use std::io::Cursor; - /// use byteorder::{BigEndian, ReadBytesExt}; - /// - /// let mut rdr = Cursor::new(vec![0xc1, 0xff, 0x7c]); - /// assert_eq!(-4063364, rdr.read_int::<BigEndian>(3).unwrap()); - #[inline] - fn read_int<T: ByteOrder>(&mut self, nbytes: usize) -> Result<i64> { - let mut buf = [0; 8]; - self.read_exact(&mut buf[..nbytes])?; - Ok(T::read_int(&buf[..nbytes], nbytes)) - } - - /// Reads an unsigned n-bytes integer from the underlying reader. - #[inline] - fn read_uint128<T: ByteOrder>(&mut self, nbytes: usize) -> Result<u128> { - let mut buf = [0; 16]; - self.read_exact(&mut buf[..nbytes])?; - Ok(T::read_uint128(&buf[..nbytes], nbytes)) - } - - /// Reads a signed n-bytes integer from the underlying reader. - #[inline] - fn read_int128<T: ByteOrder>(&mut self, nbytes: usize) -> Result<i128> { - let mut buf = [0; 16]; - self.read_exact(&mut buf[..nbytes])?; - Ok(T::read_int128(&buf[..nbytes], nbytes)) - } - - /// Reads a IEEE754 single-precision (4 bytes) floating point number from - /// the underlying reader. - /// - /// # Errors - /// - /// This method returns the same errors as [`Read::read_exact`]. - /// - /// [`Read::read_exact`]: https://doc.rust-lang.org/std/io/trait.Read.html#method.read_exact - /// - /// # Examples - /// - /// Read a big-endian single-precision floating point number from a `Read`: - /// - /// ```rust - /// use std::f32; - /// use std::io::Cursor; - /// - /// use byteorder::{BigEndian, ReadBytesExt}; - /// - /// let mut rdr = Cursor::new(vec![ - /// 0x40, 0x49, 0x0f, 0xdb, - /// ]); - /// assert_eq!(f32::consts::PI, rdr.read_f32::<BigEndian>().unwrap()); - /// ``` - #[inline] - fn read_f32<T: ByteOrder>(&mut self) -> Result<f32> { - let mut buf = [0; 4]; - self.read_exact(&mut buf)?; - Ok(T::read_f32(&buf)) - } - - /// Reads a IEEE754 double-precision (8 bytes) floating point number from - /// the underlying reader. - /// - /// # Errors - /// - /// This method returns the same errors as [`Read::read_exact`]. - /// - /// [`Read::read_exact`]: https://doc.rust-lang.org/std/io/trait.Read.html#method.read_exact - /// - /// # Examples - /// - /// Read a big-endian double-precision floating point number from a `Read`: - /// - /// ```rust - /// use std::f64; - /// use std::io::Cursor; - /// - /// use byteorder::{BigEndian, ReadBytesExt}; - /// - /// let mut rdr = Cursor::new(vec![ - /// 0x40, 0x09, 0x21, 0xfb, 0x54, 0x44, 0x2d, 0x18, - /// ]); - /// assert_eq!(f64::consts::PI, rdr.read_f64::<BigEndian>().unwrap()); - /// ``` - #[inline] - fn read_f64<T: ByteOrder>(&mut self) -> Result<f64> { - let mut buf = [0; 8]; - self.read_exact(&mut buf)?; - Ok(T::read_f64(&buf)) - } - - /// Reads a sequence of unsigned 16 bit integers from the underlying - /// reader. - /// - /// The given buffer is either filled completely or an error is returned. - /// If an error is returned, the contents of `dst` are unspecified. - /// - /// # Errors - /// - /// This method returns the same errors as [`Read::read_exact`]. - /// - /// [`Read::read_exact`]: https://doc.rust-lang.org/std/io/trait.Read.html#method.read_exact - /// - /// # Examples - /// - /// Read a sequence of unsigned 16 bit big-endian integers from a `Read`: - /// - /// ```rust - /// use std::io::Cursor; - /// use byteorder::{BigEndian, ReadBytesExt}; - /// - /// let mut rdr = Cursor::new(vec![2, 5, 3, 0]); - /// let mut dst = [0; 2]; - /// rdr.read_u16_into::<BigEndian>(&mut dst).unwrap(); - /// assert_eq!([517, 768], dst); - /// ``` - #[inline] - fn read_u16_into<T: ByteOrder>(&mut self, dst: &mut [u16]) -> Result<()> { - { - let buf = unsafe { slice_to_u8_mut(dst) }; - self.read_exact(buf)?; - } - T::from_slice_u16(dst); - Ok(()) - } - - /// Reads a sequence of unsigned 32 bit integers from the underlying - /// reader. - /// - /// The given buffer is either filled completely or an error is returned. - /// If an error is returned, the contents of `dst` are unspecified. - /// - /// # Errors - /// - /// This method returns the same errors as [`Read::read_exact`]. - /// - /// [`Read::read_exact`]: https://doc.rust-lang.org/std/io/trait.Read.html#method.read_exact - /// - /// # Examples - /// - /// Read a sequence of unsigned 32 bit big-endian integers from a `Read`: - /// - /// ```rust - /// use std::io::Cursor; - /// use byteorder::{BigEndian, ReadBytesExt}; - /// - /// let mut rdr = Cursor::new(vec![0, 0, 2, 5, 0, 0, 3, 0]); - /// let mut dst = [0; 2]; - /// rdr.read_u32_into::<BigEndian>(&mut dst).unwrap(); - /// assert_eq!([517, 768], dst); - /// ``` - #[inline] - fn read_u32_into<T: ByteOrder>(&mut self, dst: &mut [u32]) -> Result<()> { - { - let buf = unsafe { slice_to_u8_mut(dst) }; - self.read_exact(buf)?; - } - T::from_slice_u32(dst); - Ok(()) - } - - /// Reads a sequence of unsigned 64 bit integers from the underlying - /// reader. - /// - /// The given buffer is either filled completely or an error is returned. - /// If an error is returned, the contents of `dst` are unspecified. - /// - /// # Errors - /// - /// This method returns the same errors as [`Read::read_exact`]. - /// - /// [`Read::read_exact`]: https://doc.rust-lang.org/std/io/trait.Read.html#method.read_exact - /// - /// # Examples - /// - /// Read a sequence of unsigned 64 bit big-endian integers from a `Read`: - /// - /// ```rust - /// use std::io::Cursor; - /// use byteorder::{BigEndian, ReadBytesExt}; - /// - /// let mut rdr = Cursor::new(vec![ - /// 0, 0, 0, 0, 0, 0, 2, 5, - /// 0, 0, 0, 0, 0, 0, 3, 0, - /// ]); - /// let mut dst = [0; 2]; - /// rdr.read_u64_into::<BigEndian>(&mut dst).unwrap(); - /// assert_eq!([517, 768], dst); - /// ``` - #[inline] - fn read_u64_into<T: ByteOrder>(&mut self, dst: &mut [u64]) -> Result<()> { - { - let buf = unsafe { slice_to_u8_mut(dst) }; - self.read_exact(buf)?; - } - T::from_slice_u64(dst); - Ok(()) - } - - /// Reads a sequence of unsigned 128 bit integers from the underlying - /// reader. - /// - /// The given buffer is either filled completely or an error is returned. - /// If an error is returned, the contents of `dst` are unspecified. - /// - /// # Errors - /// - /// This method returns the same errors as [`Read::read_exact`]. - /// - /// [`Read::read_exact`]: https://doc.rust-lang.org/std/io/trait.Read.html#method.read_exact - /// - /// # Examples - /// - /// Read a sequence of unsigned 128 bit big-endian integers from a `Read`: - /// - /// ```rust - /// use std::io::Cursor; - /// use byteorder::{BigEndian, ReadBytesExt}; - /// - /// let mut rdr = Cursor::new(vec![ - /// 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 5, - /// 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 3, 0, - /// ]); - /// let mut dst = [0; 2]; - /// rdr.read_u128_into::<BigEndian>(&mut dst).unwrap(); - /// assert_eq!([517, 768], dst); - /// ``` - #[inline] - fn read_u128_into<T: ByteOrder>( - &mut self, - dst: &mut [u128], - ) -> Result<()> { - { - let buf = unsafe { slice_to_u8_mut(dst) }; - self.read_exact(buf)?; - } - T::from_slice_u128(dst); - Ok(()) - } - - /// Reads a sequence of signed 8 bit integers from the underlying reader. - /// - /// The given buffer is either filled completely or an error is returned. - /// If an error is returned, the contents of `dst` are unspecified. - /// - /// Note that since each `i8` is a single byte, no byte order conversions - /// are used. This method is included because it provides a safe, simple - /// way for the caller to read into a `&mut [i8]` buffer. (Without this - /// method, the caller would have to either use `unsafe` code or convert - /// each byte to `i8` individually.) - /// - /// # Errors - /// - /// This method returns the same errors as [`Read::read_exact`]. - /// - /// [`Read::read_exact`]: https://doc.rust-lang.org/std/io/trait.Read.html#method.read_exact - /// - /// # Examples - /// - /// Read a sequence of signed 8 bit integers from a `Read`: - /// - /// ```rust - /// use std::io::Cursor; - /// use byteorder::{BigEndian, ReadBytesExt}; - /// - /// let mut rdr = Cursor::new(vec![2, 251, 3]); - /// let mut dst = [0; 3]; - /// rdr.read_i8_into(&mut dst).unwrap(); - /// assert_eq!([2, -5, 3], dst); - /// ``` - #[inline] - fn read_i8_into(&mut self, dst: &mut [i8]) -> Result<()> { - let buf = unsafe { slice_to_u8_mut(dst) }; - self.read_exact(buf) - } - - /// Reads a sequence of signed 16 bit integers from the underlying - /// reader. - /// - /// The given buffer is either filled completely or an error is returned. - /// If an error is returned, the contents of `dst` are unspecified. - /// - /// # Errors - /// - /// This method returns the same errors as [`Read::read_exact`]. - /// - /// [`Read::read_exact`]: https://doc.rust-lang.org/std/io/trait.Read.html#method.read_exact - /// - /// # Examples - /// - /// Read a sequence of signed 16 bit big-endian integers from a `Read`: - /// - /// ```rust - /// use std::io::Cursor; - /// use byteorder::{BigEndian, ReadBytesExt}; - /// - /// let mut rdr = Cursor::new(vec![2, 5, 3, 0]); - /// let mut dst = [0; 2]; - /// rdr.read_i16_into::<BigEndian>(&mut dst).unwrap(); - /// assert_eq!([517, 768], dst); - /// ``` - #[inline] - fn read_i16_into<T: ByteOrder>(&mut self, dst: &mut [i16]) -> Result<()> { - { - let buf = unsafe { slice_to_u8_mut(dst) }; - self.read_exact(buf)?; - } - T::from_slice_i16(dst); - Ok(()) - } - - /// Reads a sequence of signed 32 bit integers from the underlying - /// reader. - /// - /// The given buffer is either filled completely or an error is returned. - /// If an error is returned, the contents of `dst` are unspecified. - /// - /// # Errors - /// - /// This method returns the same errors as [`Read::read_exact`]. - /// - /// [`Read::read_exact`]: https://doc.rust-lang.org/std/io/trait.Read.html#method.read_exact - /// - /// # Examples - /// - /// Read a sequence of signed 32 bit big-endian integers from a `Read`: - /// - /// ```rust - /// use std::io::Cursor; - /// use byteorder::{BigEndian, ReadBytesExt}; - /// - /// let mut rdr = Cursor::new(vec![0, 0, 2, 5, 0, 0, 3, 0]); - /// let mut dst = [0; 2]; - /// rdr.read_i32_into::<BigEndian>(&mut dst).unwrap(); - /// assert_eq!([517, 768], dst); - /// ``` - #[inline] - fn read_i32_into<T: ByteOrder>(&mut self, dst: &mut [i32]) -> Result<()> { - { - let buf = unsafe { slice_to_u8_mut(dst) }; - self.read_exact(buf)?; - } - T::from_slice_i32(dst); - Ok(()) - } - - /// Reads a sequence of signed 64 bit integers from the underlying - /// reader. - /// - /// The given buffer is either filled completely or an error is returned. - /// If an error is returned, the contents of `dst` are unspecified. - /// - /// # Errors - /// - /// This method returns the same errors as [`Read::read_exact`]. - /// - /// [`Read::read_exact`]: https://doc.rust-lang.org/std/io/trait.Read.html#method.read_exact - /// - /// # Examples - /// - /// Read a sequence of signed 64 bit big-endian integers from a `Read`: - /// - /// ```rust - /// use std::io::Cursor; - /// use byteorder::{BigEndian, ReadBytesExt}; - /// - /// let mut rdr = Cursor::new(vec![ - /// 0, 0, 0, 0, 0, 0, 2, 5, - /// 0, 0, 0, 0, 0, 0, 3, 0, - /// ]); - /// let mut dst = [0; 2]; - /// rdr.read_i64_into::<BigEndian>(&mut dst).unwrap(); - /// assert_eq!([517, 768], dst); - /// ``` - #[inline] - fn read_i64_into<T: ByteOrder>(&mut self, dst: &mut [i64]) -> Result<()> { - { - let buf = unsafe { slice_to_u8_mut(dst) }; - self.read_exact(buf)?; - } - T::from_slice_i64(dst); - Ok(()) - } - - /// Reads a sequence of signed 128 bit integers from the underlying - /// reader. - /// - /// The given buffer is either filled completely or an error is returned. - /// If an error is returned, the contents of `dst` are unspecified. - /// - /// # Errors - /// - /// This method returns the same errors as [`Read::read_exact`]. - /// - /// [`Read::read_exact`]: https://doc.rust-lang.org/std/io/trait.Read.html#method.read_exact - /// - /// # Examples - /// - /// Read a sequence of signed 128 bit big-endian integers from a `Read`: - /// - /// ```rust - /// use std::io::Cursor; - /// use byteorder::{BigEndian, ReadBytesExt}; - /// - /// let mut rdr = Cursor::new(vec![ - /// 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 5, - /// 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 3, 0, - /// ]); - /// let mut dst = [0; 2]; - /// rdr.read_i128_into::<BigEndian>(&mut dst).unwrap(); - /// assert_eq!([517, 768], dst); - /// ``` - #[inline] - fn read_i128_into<T: ByteOrder>( - &mut self, - dst: &mut [i128], - ) -> Result<()> { - { - let buf = unsafe { slice_to_u8_mut(dst) }; - self.read_exact(buf)?; - } - T::from_slice_i128(dst); - Ok(()) - } - - /// Reads a sequence of IEEE754 single-precision (4 bytes) floating - /// point numbers from the underlying reader. - /// - /// The given buffer is either filled completely or an error is returned. - /// If an error is returned, the contents of `dst` are unspecified. - /// - /// # Errors - /// - /// This method returns the same errors as [`Read::read_exact`]. - /// - /// [`Read::read_exact`]: https://doc.rust-lang.org/std/io/trait.Read.html#method.read_exact - /// - /// # Examples - /// - /// Read a sequence of big-endian single-precision floating point number - /// from a `Read`: - /// - /// ```rust - /// use std::f32; - /// use std::io::Cursor; - /// - /// use byteorder::{BigEndian, ReadBytesExt}; - /// - /// let mut rdr = Cursor::new(vec![ - /// 0x40, 0x49, 0x0f, 0xdb, - /// 0x3f, 0x80, 0x00, 0x00, - /// ]); - /// let mut dst = [0.0; 2]; - /// rdr.read_f32_into::<BigEndian>(&mut dst).unwrap(); - /// assert_eq!([f32::consts::PI, 1.0], dst); - /// ``` - #[inline] - fn read_f32_into<T: ByteOrder>(&mut self, dst: &mut [f32]) -> Result<()> { - { - let buf = unsafe { slice_to_u8_mut(dst) }; - self.read_exact(buf)?; - } - T::from_slice_f32(dst); - Ok(()) - } - - /// **DEPRECATED**. - /// - /// This method is deprecated. Use `read_f32_into` instead. - /// - /// Reads a sequence of IEEE754 single-precision (4 bytes) floating - /// point numbers from the underlying reader. - /// - /// The given buffer is either filled completely or an error is returned. - /// If an error is returned, the contents of `dst` are unspecified. - /// - /// # Errors - /// - /// This method returns the same errors as [`Read::read_exact`]. - /// - /// [`Read::read_exact`]: https://doc.rust-lang.org/std/io/trait.Read.html#method.read_exact - /// - /// # Examples - /// - /// Read a sequence of big-endian single-precision floating point number - /// from a `Read`: - /// - /// ```rust - /// use std::f32; - /// use std::io::Cursor; - /// - /// use byteorder::{BigEndian, ReadBytesExt}; - /// - /// let mut rdr = Cursor::new(vec![ - /// 0x40, 0x49, 0x0f, 0xdb, - /// 0x3f, 0x80, 0x00, 0x00, - /// ]); - /// let mut dst = [0.0; 2]; - /// rdr.read_f32_into_unchecked::<BigEndian>(&mut dst).unwrap(); - /// assert_eq!([f32::consts::PI, 1.0], dst); - /// ``` - #[inline] - #[deprecated(since = "1.2.0", note = "please use `read_f32_into` instead")] - fn read_f32_into_unchecked<T: ByteOrder>( - &mut self, - dst: &mut [f32], - ) -> Result<()> { - self.read_f32_into::<T>(dst) - } - - /// Reads a sequence of IEEE754 double-precision (8 bytes) floating - /// point numbers from the underlying reader. - /// - /// The given buffer is either filled completely or an error is returned. - /// If an error is returned, the contents of `dst` are unspecified. - /// - /// # Errors - /// - /// This method returns the same errors as [`Read::read_exact`]. - /// - /// [`Read::read_exact`]: https://doc.rust-lang.org/std/io/trait.Read.html#method.read_exact - /// - /// # Examples - /// - /// Read a sequence of big-endian single-precision floating point number - /// from a `Read`: - /// - /// ```rust - /// use std::f64; - /// use std::io::Cursor; - /// - /// use byteorder::{BigEndian, ReadBytesExt}; - /// - /// let mut rdr = Cursor::new(vec![ - /// 0x40, 0x09, 0x21, 0xfb, 0x54, 0x44, 0x2d, 0x18, - /// 0x3f, 0xF0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, - /// ]); - /// let mut dst = [0.0; 2]; - /// rdr.read_f64_into::<BigEndian>(&mut dst).unwrap(); - /// assert_eq!([f64::consts::PI, 1.0], dst); - /// ``` - #[inline] - fn read_f64_into<T: ByteOrder>(&mut self, dst: &mut [f64]) -> Result<()> { - { - let buf = unsafe { slice_to_u8_mut(dst) }; - self.read_exact(buf)?; - } - T::from_slice_f64(dst); - Ok(()) - } - - /// **DEPRECATED**. - /// - /// This method is deprecated. Use `read_f64_into` instead. - /// - /// Reads a sequence of IEEE754 double-precision (8 bytes) floating - /// point numbers from the underlying reader. - /// - /// The given buffer is either filled completely or an error is returned. - /// If an error is returned, the contents of `dst` are unspecified. - /// - /// # Safety - /// - /// This method is unsafe because there are no guarantees made about the - /// floating point values. In particular, this method does not check for - /// signaling NaNs, which may result in undefined behavior. - /// - /// # Errors - /// - /// This method returns the same errors as [`Read::read_exact`]. - /// - /// [`Read::read_exact`]: https://doc.rust-lang.org/std/io/trait.Read.html#method.read_exact - /// - /// # Examples - /// - /// Read a sequence of big-endian single-precision floating point number - /// from a `Read`: - /// - /// ```rust - /// use std::f64; - /// use std::io::Cursor; - /// - /// use byteorder::{BigEndian, ReadBytesExt}; - /// - /// let mut rdr = Cursor::new(vec![ - /// 0x40, 0x09, 0x21, 0xfb, 0x54, 0x44, 0x2d, 0x18, - /// 0x3f, 0xF0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, - /// ]); - /// let mut dst = [0.0; 2]; - /// rdr.read_f64_into_unchecked::<BigEndian>(&mut dst).unwrap(); - /// assert_eq!([f64::consts::PI, 1.0], dst); - /// ``` - #[inline] - #[deprecated(since = "1.2.0", note = "please use `read_f64_into` instead")] - fn read_f64_into_unchecked<T: ByteOrder>( - &mut self, - dst: &mut [f64], - ) -> Result<()> { - self.read_f64_into::<T>(dst) - } -} - -/// All types that implement `Read` get methods defined in `ReadBytesExt` -/// for free. -impl<R: io::Read + ?Sized> ReadBytesExt for R {} - -/// Extends [`Write`] with methods for writing numbers. (For `std::io`.) -/// -/// Most of the methods defined here have an unconstrained type parameter that -/// must be explicitly instantiated. Typically, it is instantiated with either -/// the [`BigEndian`] or [`LittleEndian`] types defined in this crate. -/// -/// # Examples -/// -/// Write unsigned 16 bit big-endian integers to a [`Write`]: -/// -/// ```rust -/// use byteorder::{BigEndian, WriteBytesExt}; -/// -/// let mut wtr = vec![]; -/// wtr.write_u16::<BigEndian>(517).unwrap(); -/// wtr.write_u16::<BigEndian>(768).unwrap(); -/// assert_eq!(wtr, vec![2, 5, 3, 0]); -/// ``` -/// -/// [`BigEndian`]: enum.BigEndian.html -/// [`LittleEndian`]: enum.LittleEndian.html -/// [`Write`]: https://doc.rust-lang.org/std/io/trait.Write.html -pub trait WriteBytesExt: io::Write { - /// Writes an unsigned 8 bit integer to the underlying writer. - /// - /// Note that since this writes a single byte, no byte order conversions - /// are used. It is included for completeness. - /// - /// # Errors - /// - /// This method returns the same errors as [`Write::write_all`]. - /// - /// [`Write::write_all`]: https://doc.rust-lang.org/std/io/trait.Write.html#method.write_all - /// - /// # Examples - /// - /// Write unsigned 8 bit integers to a `Write`: - /// - /// ```rust - /// use byteorder::WriteBytesExt; - /// - /// let mut wtr = Vec::new(); - /// wtr.write_u8(2).unwrap(); - /// wtr.write_u8(5).unwrap(); - /// assert_eq!(wtr, b"\x02\x05"); - /// ``` - #[inline] - fn write_u8(&mut self, n: u8) -> Result<()> { - self.write_all(&[n]) - } - - /// Writes a signed 8 bit integer to the underlying writer. - /// - /// Note that since this writes a single byte, no byte order conversions - /// are used. It is included for completeness. - /// - /// # Errors - /// - /// This method returns the same errors as [`Write::write_all`]. - /// - /// [`Write::write_all`]: https://doc.rust-lang.org/std/io/trait.Write.html#method.write_all - /// - /// # Examples - /// - /// Write signed 8 bit integers to a `Write`: - /// - /// ```rust - /// use byteorder::WriteBytesExt; - /// - /// let mut wtr = Vec::new(); - /// wtr.write_i8(2).unwrap(); - /// wtr.write_i8(-5).unwrap(); - /// assert_eq!(wtr, b"\x02\xfb"); - /// ``` - #[inline] - fn write_i8(&mut self, n: i8) -> Result<()> { - self.write_all(&[n as u8]) - } - - /// Writes an unsigned 16 bit integer to the underlying writer. - /// - /// # Errors - /// - /// This method returns the same errors as [`Write::write_all`]. - /// - /// [`Write::write_all`]: https://doc.rust-lang.org/std/io/trait.Write.html#method.write_all - /// - /// # Examples - /// - /// Write unsigned 16 bit big-endian integers to a `Write`: - /// - /// ```rust - /// use byteorder::{BigEndian, WriteBytesExt}; - /// - /// let mut wtr = Vec::new(); - /// wtr.write_u16::<BigEndian>(517).unwrap(); - /// wtr.write_u16::<BigEndian>(768).unwrap(); - /// assert_eq!(wtr, b"\x02\x05\x03\x00"); - /// ``` - #[inline] - fn write_u16<T: ByteOrder>(&mut self, n: u16) -> Result<()> { - let mut buf = [0; 2]; - T::write_u16(&mut buf, n); - self.write_all(&buf) - } - - /// Writes a signed 16 bit integer to the underlying writer. - /// - /// # Errors - /// - /// This method returns the same errors as [`Write::write_all`]. - /// - /// [`Write::write_all`]: https://doc.rust-lang.org/std/io/trait.Write.html#method.write_all - /// - /// # Examples - /// - /// Write signed 16 bit big-endian integers to a `Write`: - /// - /// ```rust - /// use byteorder::{BigEndian, WriteBytesExt}; - /// - /// let mut wtr = Vec::new(); - /// wtr.write_i16::<BigEndian>(193).unwrap(); - /// wtr.write_i16::<BigEndian>(-132).unwrap(); - /// assert_eq!(wtr, b"\x00\xc1\xff\x7c"); - /// ``` - #[inline] - fn write_i16<T: ByteOrder>(&mut self, n: i16) -> Result<()> { - let mut buf = [0; 2]; - T::write_i16(&mut buf, n); - self.write_all(&buf) - } - - /// Writes an unsigned 24 bit integer to the underlying writer. - /// - /// # Errors - /// - /// This method returns the same errors as [`Write::write_all`]. - /// - /// [`Write::write_all`]: https://doc.rust-lang.org/std/io/trait.Write.html#method.write_all - /// - /// # Examples - /// - /// Write unsigned 24 bit big-endian integers to a `Write`: - /// - /// ```rust - /// use byteorder::{BigEndian, WriteBytesExt}; - /// - /// let mut wtr = Vec::new(); - /// wtr.write_u24::<BigEndian>(267).unwrap(); - /// wtr.write_u24::<BigEndian>(120111).unwrap(); - /// assert_eq!(wtr, b"\x00\x01\x0b\x01\xd5\x2f"); - /// ``` - #[inline] - fn write_u24<T: ByteOrder>(&mut self, n: u32) -> Result<()> { - let mut buf = [0; 3]; - T::write_u24(&mut buf, n); - self.write_all(&buf) - } - - /// Writes a signed 24 bit integer to the underlying writer. - /// - /// # Errors - /// - /// This method returns the same errors as [`Write::write_all`]. - /// - /// [`Write::write_all`]: https://doc.rust-lang.org/std/io/trait.Write.html#method.write_all - /// - /// # Examples - /// - /// Write signed 24 bit big-endian integers to a `Write`: - /// - /// ```rust - /// use byteorder::{BigEndian, WriteBytesExt}; - /// - /// let mut wtr = Vec::new(); - /// wtr.write_i24::<BigEndian>(-34253).unwrap(); - /// wtr.write_i24::<BigEndian>(120111).unwrap(); - /// assert_eq!(wtr, b"\xff\x7a\x33\x01\xd5\x2f"); - /// ``` - #[inline] - fn write_i24<T: ByteOrder>(&mut self, n: i32) -> Result<()> { - let mut buf = [0; 3]; - T::write_i24(&mut buf, n); - self.write_all(&buf) - } - - /// Writes an unsigned 32 bit integer to the underlying writer. - /// - /// # Errors - /// - /// This method returns the same errors as [`Write::write_all`]. - /// - /// [`Write::write_all`]: https://doc.rust-lang.org/std/io/trait.Write.html#method.write_all - /// - /// # Examples - /// - /// Write unsigned 32 bit big-endian integers to a `Write`: - /// - /// ```rust - /// use byteorder::{BigEndian, WriteBytesExt}; - /// - /// let mut wtr = Vec::new(); - /// wtr.write_u32::<BigEndian>(267).unwrap(); - /// wtr.write_u32::<BigEndian>(1205419366).unwrap(); - /// assert_eq!(wtr, b"\x00\x00\x01\x0b\x47\xd9\x3d\x66"); - /// ``` - #[inline] - fn write_u32<T: ByteOrder>(&mut self, n: u32) -> Result<()> { - let mut buf = [0; 4]; - T::write_u32(&mut buf, n); - self.write_all(&buf) - } - - /// Writes a signed 32 bit integer to the underlying writer. - /// - /// # Errors - /// - /// This method returns the same errors as [`Write::write_all`]. - /// - /// [`Write::write_all`]: https://doc.rust-lang.org/std/io/trait.Write.html#method.write_all - /// - /// # Examples - /// - /// Write signed 32 bit big-endian integers to a `Write`: - /// - /// ```rust - /// use byteorder::{BigEndian, WriteBytesExt}; - /// - /// let mut wtr = Vec::new(); - /// wtr.write_i32::<BigEndian>(-34253).unwrap(); - /// wtr.write_i32::<BigEndian>(1205419366).unwrap(); - /// assert_eq!(wtr, b"\xff\xff\x7a\x33\x47\xd9\x3d\x66"); - /// ``` - #[inline] - fn write_i32<T: ByteOrder>(&mut self, n: i32) -> Result<()> { - let mut buf = [0; 4]; - T::write_i32(&mut buf, n); - self.write_all(&buf) - } - - /// Writes an unsigned 48 bit integer to the underlying writer. - /// - /// # Errors - /// - /// This method returns the same errors as [`Write::write_all`]. - /// - /// [`Write::write_all`]: https://doc.rust-lang.org/std/io/trait.Write.html#method.write_all - /// - /// # Examples - /// - /// Write unsigned 48 bit big-endian integers to a `Write`: - /// - /// ```rust - /// use byteorder::{BigEndian, WriteBytesExt}; - /// - /// let mut wtr = Vec::new(); - /// wtr.write_u48::<BigEndian>(52360336390828).unwrap(); - /// wtr.write_u48::<BigEndian>(541).unwrap(); - /// assert_eq!(wtr, b"\x2f\x9f\x17\x40\x3a\xac\x00\x00\x00\x00\x02\x1d"); - /// ``` - #[inline] - fn write_u48<T: ByteOrder>(&mut self, n: u64) -> Result<()> { - let mut buf = [0; 6]; - T::write_u48(&mut buf, n); - self.write_all(&buf) - } - - /// Writes a signed 48 bit integer to the underlying writer. - /// - /// # Errors - /// - /// This method returns the same errors as [`Write::write_all`]. - /// - /// [`Write::write_all`]: https://doc.rust-lang.org/std/io/trait.Write.html#method.write_all - /// - /// # Examples - /// - /// Write signed 48 bit big-endian integers to a `Write`: - /// - /// ```rust - /// use byteorder::{BigEndian, WriteBytesExt}; - /// - /// let mut wtr = Vec::new(); - /// wtr.write_i48::<BigEndian>(-108363435763825).unwrap(); - /// wtr.write_i48::<BigEndian>(77).unwrap(); - /// assert_eq!(wtr, b"\x9d\x71\xab\xe7\x97\x8f\x00\x00\x00\x00\x00\x4d"); - /// ``` - #[inline] - fn write_i48<T: ByteOrder>(&mut self, n: i64) -> Result<()> { - let mut buf = [0; 6]; - T::write_i48(&mut buf, n); - self.write_all(&buf) - } - - /// Writes an unsigned 64 bit integer to the underlying writer. - /// - /// # Errors - /// - /// This method returns the same errors as [`Write::write_all`]. - /// - /// [`Write::write_all`]: https://doc.rust-lang.org/std/io/trait.Write.html#method.write_all - /// - /// # Examples - /// - /// Write unsigned 64 bit big-endian integers to a `Write`: - /// - /// ```rust - /// use byteorder::{BigEndian, WriteBytesExt}; - /// - /// let mut wtr = Vec::new(); - /// wtr.write_u64::<BigEndian>(918733457491587).unwrap(); - /// wtr.write_u64::<BigEndian>(143).unwrap(); - /// assert_eq!(wtr, b"\x00\x03\x43\x95\x4d\x60\x86\x83\x00\x00\x00\x00\x00\x00\x00\x8f"); - /// ``` - #[inline] - fn write_u64<T: ByteOrder>(&mut self, n: u64) -> Result<()> { - let mut buf = [0; 8]; - T::write_u64(&mut buf, n); - self.write_all(&buf) - } - - /// Writes a signed 64 bit integer to the underlying writer. - /// - /// # Errors - /// - /// This method returns the same errors as [`Write::write_all`]. - /// - /// [`Write::write_all`]: https://doc.rust-lang.org/std/io/trait.Write.html#method.write_all - /// - /// # Examples - /// - /// Write signed 64 bit big-endian integers to a `Write`: - /// - /// ```rust - /// use byteorder::{BigEndian, WriteBytesExt}; - /// - /// let mut wtr = Vec::new(); - /// wtr.write_i64::<BigEndian>(i64::min_value()).unwrap(); - /// wtr.write_i64::<BigEndian>(i64::max_value()).unwrap(); - /// assert_eq!(wtr, b"\x80\x00\x00\x00\x00\x00\x00\x00\x7f\xff\xff\xff\xff\xff\xff\xff"); - /// ``` - #[inline] - fn write_i64<T: ByteOrder>(&mut self, n: i64) -> Result<()> { - let mut buf = [0; 8]; - T::write_i64(&mut buf, n); - self.write_all(&buf) - } - - /// Writes an unsigned 128 bit integer to the underlying writer. - #[inline] - fn write_u128<T: ByteOrder>(&mut self, n: u128) -> Result<()> { - let mut buf = [0; 16]; - T::write_u128(&mut buf, n); - self.write_all(&buf) - } - - /// Writes a signed 128 bit integer to the underlying writer. - #[inline] - fn write_i128<T: ByteOrder>(&mut self, n: i128) -> Result<()> { - let mut buf = [0; 16]; - T::write_i128(&mut buf, n); - self.write_all(&buf) - } - - /// Writes an unsigned n-bytes integer to the underlying writer. - /// - /// # Errors - /// - /// This method returns the same errors as [`Write::write_all`]. - /// - /// [`Write::write_all`]: https://doc.rust-lang.org/std/io/trait.Write.html#method.write_all - /// - /// # Panics - /// - /// If the given integer is not representable in the given number of bytes, - /// this method panics. If `nbytes > 8`, this method panics. - /// - /// # Examples - /// - /// Write unsigned 40 bit big-endian integers to a `Write`: - /// - /// ```rust - /// use byteorder::{BigEndian, WriteBytesExt}; - /// - /// let mut wtr = Vec::new(); - /// wtr.write_uint::<BigEndian>(312550384361, 5).unwrap(); - /// wtr.write_uint::<BigEndian>(43, 5).unwrap(); - /// assert_eq!(wtr, b"\x48\xc5\x74\x62\xe9\x00\x00\x00\x00\x2b"); - /// ``` - #[inline] - fn write_uint<T: ByteOrder>( - &mut self, - n: u64, - nbytes: usize, - ) -> Result<()> { - let mut buf = [0; 8]; - T::write_uint(&mut buf, n, nbytes); - self.write_all(&buf[0..nbytes]) - } - - /// Writes a signed n-bytes integer to the underlying writer. - /// - /// # Errors - /// - /// This method returns the same errors as [`Write::write_all`]. - /// - /// [`Write::write_all`]: https://doc.rust-lang.org/std/io/trait.Write.html#method.write_all - /// - /// # Panics - /// - /// If the given integer is not representable in the given number of bytes, - /// this method panics. If `nbytes > 8`, this method panics. - /// - /// # Examples - /// - /// Write signed 56 bit big-endian integers to a `Write`: - /// - /// ```rust - /// use byteorder::{BigEndian, WriteBytesExt}; - /// - /// let mut wtr = Vec::new(); - /// wtr.write_int::<BigEndian>(-3548172039376767, 7).unwrap(); - /// wtr.write_int::<BigEndian>(43, 7).unwrap(); - /// assert_eq!(wtr, b"\xf3\x64\xf4\xd1\xfd\xb0\x81\x00\x00\x00\x00\x00\x00\x2b"); - /// ``` - #[inline] - fn write_int<T: ByteOrder>( - &mut self, - n: i64, - nbytes: usize, - ) -> Result<()> { - let mut buf = [0; 8]; - T::write_int(&mut buf, n, nbytes); - self.write_all(&buf[0..nbytes]) - } - - /// Writes an unsigned n-bytes integer to the underlying writer. - /// - /// If the given integer is not representable in the given number of bytes, - /// this method panics. If `nbytes > 16`, this method panics. - #[inline] - fn write_uint128<T: ByteOrder>( - &mut self, - n: u128, - nbytes: usize, - ) -> Result<()> { - let mut buf = [0; 16]; - T::write_uint128(&mut buf, n, nbytes); - self.write_all(&buf[0..nbytes]) - } - - /// Writes a signed n-bytes integer to the underlying writer. - /// - /// If the given integer is not representable in the given number of bytes, - /// this method panics. If `nbytes > 16`, this method panics. - #[inline] - fn write_int128<T: ByteOrder>( - &mut self, - n: i128, - nbytes: usize, - ) -> Result<()> { - let mut buf = [0; 16]; - T::write_int128(&mut buf, n, nbytes); - self.write_all(&buf[0..nbytes]) - } - - /// Writes a IEEE754 single-precision (4 bytes) floating point number to - /// the underlying writer. - /// - /// # Errors - /// - /// This method returns the same errors as [`Write::write_all`]. - /// - /// [`Write::write_all`]: https://doc.rust-lang.org/std/io/trait.Write.html#method.write_all - /// - /// # Examples - /// - /// Write a big-endian single-precision floating point number to a `Write`: - /// - /// ```rust - /// use std::f32; - /// - /// use byteorder::{BigEndian, WriteBytesExt}; - /// - /// let mut wtr = Vec::new(); - /// wtr.write_f32::<BigEndian>(f32::consts::PI).unwrap(); - /// assert_eq!(wtr, b"\x40\x49\x0f\xdb"); - /// ``` - #[inline] - fn write_f32<T: ByteOrder>(&mut self, n: f32) -> Result<()> { - let mut buf = [0; 4]; - T::write_f32(&mut buf, n); - self.write_all(&buf) - } - - /// Writes a IEEE754 double-precision (8 bytes) floating point number to - /// the underlying writer. - /// - /// # Errors - /// - /// This method returns the same errors as [`Write::write_all`]. - /// - /// [`Write::write_all`]: https://doc.rust-lang.org/std/io/trait.Write.html#method.write_all - /// - /// # Examples - /// - /// Write a big-endian double-precision floating point number to a `Write`: - /// - /// ```rust - /// use std::f64; - /// - /// use byteorder::{BigEndian, WriteBytesExt}; - /// - /// let mut wtr = Vec::new(); - /// wtr.write_f64::<BigEndian>(f64::consts::PI).unwrap(); - /// assert_eq!(wtr, b"\x40\x09\x21\xfb\x54\x44\x2d\x18"); - /// ``` - #[inline] - fn write_f64<T: ByteOrder>(&mut self, n: f64) -> Result<()> { - let mut buf = [0; 8]; - T::write_f64(&mut buf, n); - self.write_all(&buf) - } -} - -/// All types that implement `Write` get methods defined in `WriteBytesExt` -/// for free. -impl<W: io::Write + ?Sized> WriteBytesExt for W {} - -/// Convert a slice of T (where T is plain old data) to its mutable binary -/// representation. -/// -/// This function is wildly unsafe because it permits arbitrary modification of -/// the binary representation of any `Copy` type. Use with care. It's intended -/// to be called only where `T` is a numeric type. -unsafe fn slice_to_u8_mut<T: Copy>(slice: &mut [T]) -> &mut [u8] { - use std::mem::size_of; - - let len = size_of::<T>() * slice.len(); - slice::from_raw_parts_mut(slice.as_mut_ptr() as *mut u8, len) -} |