| <!DOCTYPE html><html lang="en"><head><meta charset="utf-8"><meta name="viewport" content="width=device-width, initial-scale=1.0"><meta name="generator" content="rustdoc"><meta name="description" content="Source of the Rust file `/root/.cargo/registry/src/github.com-1ecc6299db9ec823/byteorder-1.4.3/src/io.rs`."><meta name="keywords" content="rust, rustlang, rust-lang"><title>io.rs - source</title><link rel="preload" as="font" type="font/woff2" crossorigin href="../../SourceSerif4-Regular.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../FiraSans-Regular.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../FiraSans-Medium.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../SourceCodePro-Regular.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../SourceSerif4-Bold.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../SourceCodePro-Semibold.ttf.woff2"><link rel="stylesheet" href="../../normalize.css"><link rel="stylesheet" href="../../rustdoc.css" id="mainThemeStyle"><link rel="stylesheet" href="../../ayu.css" disabled><link rel="stylesheet" href="../../dark.css" disabled><link rel="stylesheet" href="../../light.css" id="themeStyle"><script id="default-settings" ></script><script src="../../storage.js"></script><script defer src="../../source-script.js"></script><script defer src="../../source-files.js"></script><script defer src="../../main.js"></script><noscript><link rel="stylesheet" href="../../noscript.css"></noscript><link rel="alternate icon" type="image/png" href="../../favicon-16x16.png"><link rel="alternate icon" type="image/png" href="../../favicon-32x32.png"><link rel="icon" type="image/svg+xml" href="../../favicon.svg"></head><body class="rustdoc source"><!--[if lte IE 11]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><nav class="sidebar"><a class="sidebar-logo" href="../../byteorder/index.html"><div class="logo-container"><img class="rust-logo" src="../../rust-logo.svg" alt="logo"></div></a></nav><main><div class="width-limiter"><nav class="sub"><a class="sub-logo-container" href="../../byteorder/index.html"><img class="rust-logo" src="../../rust-logo.svg" alt="logo"></a><form class="search-form"><div class="search-container"><span></span><input class="search-input" name="search" autocomplete="off" spellcheck="false" placeholder="Click or press ‘S’ to search, ‘?’ for more options…" type="search"><div id="help-button" title="help" tabindex="-1"><a href="../../help.html">?</a></div><div id="settings-menu" tabindex="-1"><a href="../../settings.html" title="settings"><img width="22" height="22" alt="Change settings" src="../../wheel.svg"></a></div></div></form></nav><section id="main-content" class="content"><div class="example-wrap"><pre class="src-line-numbers"><span id="1">1</span> |
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| <span id="1587">1587</span> |
| <span id="1588">1588</span> |
| <span id="1589">1589</span> |
| <span id="1590">1590</span> |
| <span id="1591">1591</span> |
| <span id="1592">1592</span> |
| </pre><pre class="rust"><code><span class="kw">use </span>std::{ |
| io::{<span class="self">self</span>, <span class="prelude-ty">Result</span>}, |
| slice, |
| }; |
| |
| <span class="kw">use </span><span class="kw">crate</span>::ByteOrder; |
| |
| <span class="doccomment">/// 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 |
| </span><span class="kw">pub trait </span>ReadBytesExt: io::Read { |
| <span class="doccomment">/// 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()); |
| /// ``` |
| </span><span class="attribute">#[inline] |
| </span><span class="kw">fn </span>read_u8(<span class="kw-2">&mut </span><span class="self">self</span>) -> <span class="prelude-ty">Result</span><u8> { |
| <span class="kw">let </span><span class="kw-2">mut </span>buf = [<span class="number">0</span>; <span class="number">1</span>]; |
| <span class="self">self</span>.read_exact(<span class="kw-2">&mut </span>buf)<span class="question-mark">?</span>; |
| <span class="prelude-val">Ok</span>(buf[<span class="number">0</span>]) |
| } |
| |
| <span class="doccomment">/// 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()); |
| /// ``` |
| </span><span class="attribute">#[inline] |
| </span><span class="kw">fn </span>read_i8(<span class="kw-2">&mut </span><span class="self">self</span>) -> <span class="prelude-ty">Result</span><i8> { |
| <span class="kw">let </span><span class="kw-2">mut </span>buf = [<span class="number">0</span>; <span class="number">1</span>]; |
| <span class="self">self</span>.read_exact(<span class="kw-2">&mut </span>buf)<span class="question-mark">?</span>; |
| <span class="prelude-val">Ok</span>(buf[<span class="number">0</span>] <span class="kw">as </span>i8) |
| } |
| |
| <span class="doccomment">/// 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()); |
| /// ``` |
| </span><span class="attribute">#[inline] |
| </span><span class="kw">fn </span>read_u16<T: ByteOrder>(<span class="kw-2">&mut </span><span class="self">self</span>) -> <span class="prelude-ty">Result</span><u16> { |
| <span class="kw">let </span><span class="kw-2">mut </span>buf = [<span class="number">0</span>; <span class="number">2</span>]; |
| <span class="self">self</span>.read_exact(<span class="kw-2">&mut </span>buf)<span class="question-mark">?</span>; |
| <span class="prelude-val">Ok</span>(T::read_u16(<span class="kw-2">&</span>buf)) |
| } |
| |
| <span class="doccomment">/// 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()); |
| /// ``` |
| </span><span class="attribute">#[inline] |
| </span><span class="kw">fn </span>read_i16<T: ByteOrder>(<span class="kw-2">&mut </span><span class="self">self</span>) -> <span class="prelude-ty">Result</span><i16> { |
| <span class="kw">let </span><span class="kw-2">mut </span>buf = [<span class="number">0</span>; <span class="number">2</span>]; |
| <span class="self">self</span>.read_exact(<span class="kw-2">&mut </span>buf)<span class="question-mark">?</span>; |
| <span class="prelude-val">Ok</span>(T::read_i16(<span class="kw-2">&</span>buf)) |
| } |
| |
| <span class="doccomment">/// 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()); |
| /// ``` |
| </span><span class="attribute">#[inline] |
| </span><span class="kw">fn </span>read_u24<T: ByteOrder>(<span class="kw-2">&mut </span><span class="self">self</span>) -> <span class="prelude-ty">Result</span><u32> { |
| <span class="kw">let </span><span class="kw-2">mut </span>buf = [<span class="number">0</span>; <span class="number">3</span>]; |
| <span class="self">self</span>.read_exact(<span class="kw-2">&mut </span>buf)<span class="question-mark">?</span>; |
| <span class="prelude-val">Ok</span>(T::read_u24(<span class="kw-2">&</span>buf)) |
| } |
| |
| <span class="doccomment">/// 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()); |
| /// ``` |
| </span><span class="attribute">#[inline] |
| </span><span class="kw">fn </span>read_i24<T: ByteOrder>(<span class="kw-2">&mut </span><span class="self">self</span>) -> <span class="prelude-ty">Result</span><i32> { |
| <span class="kw">let </span><span class="kw-2">mut </span>buf = [<span class="number">0</span>; <span class="number">3</span>]; |
| <span class="self">self</span>.read_exact(<span class="kw-2">&mut </span>buf)<span class="question-mark">?</span>; |
| <span class="prelude-val">Ok</span>(T::read_i24(<span class="kw-2">&</span>buf)) |
| } |
| |
| <span class="doccomment">/// 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()); |
| /// ``` |
| </span><span class="attribute">#[inline] |
| </span><span class="kw">fn </span>read_u32<T: ByteOrder>(<span class="kw-2">&mut </span><span class="self">self</span>) -> <span class="prelude-ty">Result</span><u32> { |
| <span class="kw">let </span><span class="kw-2">mut </span>buf = [<span class="number">0</span>; <span class="number">4</span>]; |
| <span class="self">self</span>.read_exact(<span class="kw-2">&mut </span>buf)<span class="question-mark">?</span>; |
| <span class="prelude-val">Ok</span>(T::read_u32(<span class="kw-2">&</span>buf)) |
| } |
| |
| <span class="doccomment">/// 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()); |
| /// ``` |
| </span><span class="attribute">#[inline] |
| </span><span class="kw">fn </span>read_i32<T: ByteOrder>(<span class="kw-2">&mut </span><span class="self">self</span>) -> <span class="prelude-ty">Result</span><i32> { |
| <span class="kw">let </span><span class="kw-2">mut </span>buf = [<span class="number">0</span>; <span class="number">4</span>]; |
| <span class="self">self</span>.read_exact(<span class="kw-2">&mut </span>buf)<span class="question-mark">?</span>; |
| <span class="prelude-val">Ok</span>(T::read_i32(<span class="kw-2">&</span>buf)) |
| } |
| |
| <span class="doccomment">/// 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()); |
| /// ``` |
| </span><span class="attribute">#[inline] |
| </span><span class="kw">fn </span>read_u48<T: ByteOrder>(<span class="kw-2">&mut </span><span class="self">self</span>) -> <span class="prelude-ty">Result</span><u64> { |
| <span class="kw">let </span><span class="kw-2">mut </span>buf = [<span class="number">0</span>; <span class="number">6</span>]; |
| <span class="self">self</span>.read_exact(<span class="kw-2">&mut </span>buf)<span class="question-mark">?</span>; |
| <span class="prelude-val">Ok</span>(T::read_u48(<span class="kw-2">&</span>buf)) |
| } |
| |
| <span class="doccomment">/// 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()); |
| /// ``` |
| </span><span class="attribute">#[inline] |
| </span><span class="kw">fn </span>read_i48<T: ByteOrder>(<span class="kw-2">&mut </span><span class="self">self</span>) -> <span class="prelude-ty">Result</span><i64> { |
| <span class="kw">let </span><span class="kw-2">mut </span>buf = [<span class="number">0</span>; <span class="number">6</span>]; |
| <span class="self">self</span>.read_exact(<span class="kw-2">&mut </span>buf)<span class="question-mark">?</span>; |
| <span class="prelude-val">Ok</span>(T::read_i48(<span class="kw-2">&</span>buf)) |
| } |
| |
| <span class="doccomment">/// 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()); |
| /// ``` |
| </span><span class="attribute">#[inline] |
| </span><span class="kw">fn </span>read_u64<T: ByteOrder>(<span class="kw-2">&mut </span><span class="self">self</span>) -> <span class="prelude-ty">Result</span><u64> { |
| <span class="kw">let </span><span class="kw-2">mut </span>buf = [<span class="number">0</span>; <span class="number">8</span>]; |
| <span class="self">self</span>.read_exact(<span class="kw-2">&mut </span>buf)<span class="question-mark">?</span>; |
| <span class="prelude-val">Ok</span>(T::read_u64(<span class="kw-2">&</span>buf)) |
| } |
| |
| <span class="doccomment">/// 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()); |
| /// ``` |
| </span><span class="attribute">#[inline] |
| </span><span class="kw">fn </span>read_i64<T: ByteOrder>(<span class="kw-2">&mut </span><span class="self">self</span>) -> <span class="prelude-ty">Result</span><i64> { |
| <span class="kw">let </span><span class="kw-2">mut </span>buf = [<span class="number">0</span>; <span class="number">8</span>]; |
| <span class="self">self</span>.read_exact(<span class="kw-2">&mut </span>buf)<span class="question-mark">?</span>; |
| <span class="prelude-val">Ok</span>(T::read_i64(<span class="kw-2">&</span>buf)) |
| } |
| |
| <span class="doccomment">/// 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()); |
| /// ``` |
| </span><span class="attribute">#[inline] |
| </span><span class="kw">fn </span>read_u128<T: ByteOrder>(<span class="kw-2">&mut </span><span class="self">self</span>) -> <span class="prelude-ty">Result</span><u128> { |
| <span class="kw">let </span><span class="kw-2">mut </span>buf = [<span class="number">0</span>; <span class="number">16</span>]; |
| <span class="self">self</span>.read_exact(<span class="kw-2">&mut </span>buf)<span class="question-mark">?</span>; |
| <span class="prelude-val">Ok</span>(T::read_u128(<span class="kw-2">&</span>buf)) |
| } |
| |
| <span class="doccomment">/// 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()); |
| /// ``` |
| </span><span class="attribute">#[inline] |
| </span><span class="kw">fn </span>read_i128<T: ByteOrder>(<span class="kw-2">&mut </span><span class="self">self</span>) -> <span class="prelude-ty">Result</span><i128> { |
| <span class="kw">let </span><span class="kw-2">mut </span>buf = [<span class="number">0</span>; <span class="number">16</span>]; |
| <span class="self">self</span>.read_exact(<span class="kw-2">&mut </span>buf)<span class="question-mark">?</span>; |
| <span class="prelude-val">Ok</span>(T::read_i128(<span class="kw-2">&</span>buf)) |
| } |
| |
| <span class="doccomment">/// 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()); |
| </span><span class="attribute">#[inline] |
| </span><span class="kw">fn </span>read_uint<T: ByteOrder>(<span class="kw-2">&mut </span><span class="self">self</span>, nbytes: usize) -> <span class="prelude-ty">Result</span><u64> { |
| <span class="kw">let </span><span class="kw-2">mut </span>buf = [<span class="number">0</span>; <span class="number">8</span>]; |
| <span class="self">self</span>.read_exact(<span class="kw-2">&mut </span>buf[..nbytes])<span class="question-mark">?</span>; |
| <span class="prelude-val">Ok</span>(T::read_uint(<span class="kw-2">&</span>buf[..nbytes], nbytes)) |
| } |
| |
| <span class="doccomment">/// 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()); |
| </span><span class="attribute">#[inline] |
| </span><span class="kw">fn </span>read_int<T: ByteOrder>(<span class="kw-2">&mut </span><span class="self">self</span>, nbytes: usize) -> <span class="prelude-ty">Result</span><i64> { |
| <span class="kw">let </span><span class="kw-2">mut </span>buf = [<span class="number">0</span>; <span class="number">8</span>]; |
| <span class="self">self</span>.read_exact(<span class="kw-2">&mut </span>buf[..nbytes])<span class="question-mark">?</span>; |
| <span class="prelude-val">Ok</span>(T::read_int(<span class="kw-2">&</span>buf[..nbytes], nbytes)) |
| } |
| |
| <span class="doccomment">/// Reads an unsigned n-bytes integer from the underlying reader. |
| </span><span class="attribute">#[inline] |
| </span><span class="kw">fn </span>read_uint128<T: ByteOrder>(<span class="kw-2">&mut </span><span class="self">self</span>, nbytes: usize) -> <span class="prelude-ty">Result</span><u128> { |
| <span class="kw">let </span><span class="kw-2">mut </span>buf = [<span class="number">0</span>; <span class="number">16</span>]; |
| <span class="self">self</span>.read_exact(<span class="kw-2">&mut </span>buf[..nbytes])<span class="question-mark">?</span>; |
| <span class="prelude-val">Ok</span>(T::read_uint128(<span class="kw-2">&</span>buf[..nbytes], nbytes)) |
| } |
| |
| <span class="doccomment">/// Reads a signed n-bytes integer from the underlying reader. |
| </span><span class="attribute">#[inline] |
| </span><span class="kw">fn </span>read_int128<T: ByteOrder>(<span class="kw-2">&mut </span><span class="self">self</span>, nbytes: usize) -> <span class="prelude-ty">Result</span><i128> { |
| <span class="kw">let </span><span class="kw-2">mut </span>buf = [<span class="number">0</span>; <span class="number">16</span>]; |
| <span class="self">self</span>.read_exact(<span class="kw-2">&mut </span>buf[..nbytes])<span class="question-mark">?</span>; |
| <span class="prelude-val">Ok</span>(T::read_int128(<span class="kw-2">&</span>buf[..nbytes], nbytes)) |
| } |
| |
| <span class="doccomment">/// 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()); |
| /// ``` |
| </span><span class="attribute">#[inline] |
| </span><span class="kw">fn </span>read_f32<T: ByteOrder>(<span class="kw-2">&mut </span><span class="self">self</span>) -> <span class="prelude-ty">Result</span><f32> { |
| <span class="kw">let </span><span class="kw-2">mut </span>buf = [<span class="number">0</span>; <span class="number">4</span>]; |
| <span class="self">self</span>.read_exact(<span class="kw-2">&mut </span>buf)<span class="question-mark">?</span>; |
| <span class="prelude-val">Ok</span>(T::read_f32(<span class="kw-2">&</span>buf)) |
| } |
| |
| <span class="doccomment">/// 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()); |
| /// ``` |
| </span><span class="attribute">#[inline] |
| </span><span class="kw">fn </span>read_f64<T: ByteOrder>(<span class="kw-2">&mut </span><span class="self">self</span>) -> <span class="prelude-ty">Result</span><f64> { |
| <span class="kw">let </span><span class="kw-2">mut </span>buf = [<span class="number">0</span>; <span class="number">8</span>]; |
| <span class="self">self</span>.read_exact(<span class="kw-2">&mut </span>buf)<span class="question-mark">?</span>; |
| <span class="prelude-val">Ok</span>(T::read_f64(<span class="kw-2">&</span>buf)) |
| } |
| |
| <span class="doccomment">/// 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); |
| /// ``` |
| </span><span class="attribute">#[inline] |
| </span><span class="kw">fn </span>read_u16_into<T: ByteOrder>(<span class="kw-2">&mut </span><span class="self">self</span>, dst: <span class="kw-2">&mut </span>[u16]) -> <span class="prelude-ty">Result</span><()> { |
| { |
| <span class="kw">let </span>buf = <span class="kw">unsafe </span>{ slice_to_u8_mut(dst) }; |
| <span class="self">self</span>.read_exact(buf)<span class="question-mark">?</span>; |
| } |
| T::from_slice_u16(dst); |
| <span class="prelude-val">Ok</span>(()) |
| } |
| |
| <span class="doccomment">/// 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); |
| /// ``` |
| </span><span class="attribute">#[inline] |
| </span><span class="kw">fn </span>read_u32_into<T: ByteOrder>(<span class="kw-2">&mut </span><span class="self">self</span>, dst: <span class="kw-2">&mut </span>[u32]) -> <span class="prelude-ty">Result</span><()> { |
| { |
| <span class="kw">let </span>buf = <span class="kw">unsafe </span>{ slice_to_u8_mut(dst) }; |
| <span class="self">self</span>.read_exact(buf)<span class="question-mark">?</span>; |
| } |
| T::from_slice_u32(dst); |
| <span class="prelude-val">Ok</span>(()) |
| } |
| |
| <span class="doccomment">/// 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); |
| /// ``` |
| </span><span class="attribute">#[inline] |
| </span><span class="kw">fn </span>read_u64_into<T: ByteOrder>(<span class="kw-2">&mut </span><span class="self">self</span>, dst: <span class="kw-2">&mut </span>[u64]) -> <span class="prelude-ty">Result</span><()> { |
| { |
| <span class="kw">let </span>buf = <span class="kw">unsafe </span>{ slice_to_u8_mut(dst) }; |
| <span class="self">self</span>.read_exact(buf)<span class="question-mark">?</span>; |
| } |
| T::from_slice_u64(dst); |
| <span class="prelude-val">Ok</span>(()) |
| } |
| |
| <span class="doccomment">/// 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); |
| /// ``` |
| </span><span class="attribute">#[inline] |
| </span><span class="kw">fn </span>read_u128_into<T: ByteOrder>( |
| <span class="kw-2">&mut </span><span class="self">self</span>, |
| dst: <span class="kw-2">&mut </span>[u128], |
| ) -> <span class="prelude-ty">Result</span><()> { |
| { |
| <span class="kw">let </span>buf = <span class="kw">unsafe </span>{ slice_to_u8_mut(dst) }; |
| <span class="self">self</span>.read_exact(buf)<span class="question-mark">?</span>; |
| } |
| T::from_slice_u128(dst); |
| <span class="prelude-val">Ok</span>(()) |
| } |
| |
| <span class="doccomment">/// 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); |
| /// ``` |
| </span><span class="attribute">#[inline] |
| </span><span class="kw">fn </span>read_i8_into(<span class="kw-2">&mut </span><span class="self">self</span>, dst: <span class="kw-2">&mut </span>[i8]) -> <span class="prelude-ty">Result</span><()> { |
| <span class="kw">let </span>buf = <span class="kw">unsafe </span>{ slice_to_u8_mut(dst) }; |
| <span class="self">self</span>.read_exact(buf) |
| } |
| |
| <span class="doccomment">/// 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); |
| /// ``` |
| </span><span class="attribute">#[inline] |
| </span><span class="kw">fn </span>read_i16_into<T: ByteOrder>(<span class="kw-2">&mut </span><span class="self">self</span>, dst: <span class="kw-2">&mut </span>[i16]) -> <span class="prelude-ty">Result</span><()> { |
| { |
| <span class="kw">let </span>buf = <span class="kw">unsafe </span>{ slice_to_u8_mut(dst) }; |
| <span class="self">self</span>.read_exact(buf)<span class="question-mark">?</span>; |
| } |
| T::from_slice_i16(dst); |
| <span class="prelude-val">Ok</span>(()) |
| } |
| |
| <span class="doccomment">/// 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); |
| /// ``` |
| </span><span class="attribute">#[inline] |
| </span><span class="kw">fn </span>read_i32_into<T: ByteOrder>(<span class="kw-2">&mut </span><span class="self">self</span>, dst: <span class="kw-2">&mut </span>[i32]) -> <span class="prelude-ty">Result</span><()> { |
| { |
| <span class="kw">let </span>buf = <span class="kw">unsafe </span>{ slice_to_u8_mut(dst) }; |
| <span class="self">self</span>.read_exact(buf)<span class="question-mark">?</span>; |
| } |
| T::from_slice_i32(dst); |
| <span class="prelude-val">Ok</span>(()) |
| } |
| |
| <span class="doccomment">/// 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); |
| /// ``` |
| </span><span class="attribute">#[inline] |
| </span><span class="kw">fn </span>read_i64_into<T: ByteOrder>(<span class="kw-2">&mut </span><span class="self">self</span>, dst: <span class="kw-2">&mut </span>[i64]) -> <span class="prelude-ty">Result</span><()> { |
| { |
| <span class="kw">let </span>buf = <span class="kw">unsafe </span>{ slice_to_u8_mut(dst) }; |
| <span class="self">self</span>.read_exact(buf)<span class="question-mark">?</span>; |
| } |
| T::from_slice_i64(dst); |
| <span class="prelude-val">Ok</span>(()) |
| } |
| |
| <span class="doccomment">/// 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); |
| /// ``` |
| </span><span class="attribute">#[inline] |
| </span><span class="kw">fn </span>read_i128_into<T: ByteOrder>( |
| <span class="kw-2">&mut </span><span class="self">self</span>, |
| dst: <span class="kw-2">&mut </span>[i128], |
| ) -> <span class="prelude-ty">Result</span><()> { |
| { |
| <span class="kw">let </span>buf = <span class="kw">unsafe </span>{ slice_to_u8_mut(dst) }; |
| <span class="self">self</span>.read_exact(buf)<span class="question-mark">?</span>; |
| } |
| T::from_slice_i128(dst); |
| <span class="prelude-val">Ok</span>(()) |
| } |
| |
| <span class="doccomment">/// 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); |
| /// ``` |
| </span><span class="attribute">#[inline] |
| </span><span class="kw">fn </span>read_f32_into<T: ByteOrder>(<span class="kw-2">&mut </span><span class="self">self</span>, dst: <span class="kw-2">&mut </span>[f32]) -> <span class="prelude-ty">Result</span><()> { |
| { |
| <span class="kw">let </span>buf = <span class="kw">unsafe </span>{ slice_to_u8_mut(dst) }; |
| <span class="self">self</span>.read_exact(buf)<span class="question-mark">?</span>; |
| } |
| T::from_slice_f32(dst); |
| <span class="prelude-val">Ok</span>(()) |
| } |
| |
| <span class="doccomment">/// **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); |
| /// ``` |
| </span><span class="attribute">#[inline] |
| #[deprecated(since = <span class="string">"1.2.0"</span>, note = <span class="string">"please use `read_f32_into` instead"</span>)] |
| </span><span class="kw">fn </span>read_f32_into_unchecked<T: ByteOrder>( |
| <span class="kw-2">&mut </span><span class="self">self</span>, |
| dst: <span class="kw-2">&mut </span>[f32], |
| ) -> <span class="prelude-ty">Result</span><()> { |
| <span class="self">self</span>.read_f32_into::<T>(dst) |
| } |
| |
| <span class="doccomment">/// 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); |
| /// ``` |
| </span><span class="attribute">#[inline] |
| </span><span class="kw">fn </span>read_f64_into<T: ByteOrder>(<span class="kw-2">&mut </span><span class="self">self</span>, dst: <span class="kw-2">&mut </span>[f64]) -> <span class="prelude-ty">Result</span><()> { |
| { |
| <span class="kw">let </span>buf = <span class="kw">unsafe </span>{ slice_to_u8_mut(dst) }; |
| <span class="self">self</span>.read_exact(buf)<span class="question-mark">?</span>; |
| } |
| T::from_slice_f64(dst); |
| <span class="prelude-val">Ok</span>(()) |
| } |
| |
| <span class="doccomment">/// **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); |
| /// ``` |
| </span><span class="attribute">#[inline] |
| #[deprecated(since = <span class="string">"1.2.0"</span>, note = <span class="string">"please use `read_f64_into` instead"</span>)] |
| </span><span class="kw">fn </span>read_f64_into_unchecked<T: ByteOrder>( |
| <span class="kw-2">&mut </span><span class="self">self</span>, |
| dst: <span class="kw-2">&mut </span>[f64], |
| ) -> <span class="prelude-ty">Result</span><()> { |
| <span class="self">self</span>.read_f64_into::<T>(dst) |
| } |
| } |
| |
| <span class="doccomment">/// All types that implement `Read` get methods defined in `ReadBytesExt` |
| /// for free. |
| </span><span class="kw">impl</span><R: io::Read + <span class="question-mark">?</span>Sized> ReadBytesExt <span class="kw">for </span>R {} |
| |
| <span class="doccomment">/// 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 |
| </span><span class="kw">pub trait </span>WriteBytesExt: io::Write { |
| <span class="doccomment">/// 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"); |
| /// ``` |
| </span><span class="attribute">#[inline] |
| </span><span class="kw">fn </span>write_u8(<span class="kw-2">&mut </span><span class="self">self</span>, n: u8) -> <span class="prelude-ty">Result</span><()> { |
| <span class="self">self</span>.write_all(<span class="kw-2">&</span>[n]) |
| } |
| |
| <span class="doccomment">/// 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"); |
| /// ``` |
| </span><span class="attribute">#[inline] |
| </span><span class="kw">fn </span>write_i8(<span class="kw-2">&mut </span><span class="self">self</span>, n: i8) -> <span class="prelude-ty">Result</span><()> { |
| <span class="self">self</span>.write_all(<span class="kw-2">&</span>[n <span class="kw">as </span>u8]) |
| } |
| |
| <span class="doccomment">/// 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"); |
| /// ``` |
| </span><span class="attribute">#[inline] |
| </span><span class="kw">fn </span>write_u16<T: ByteOrder>(<span class="kw-2">&mut </span><span class="self">self</span>, n: u16) -> <span class="prelude-ty">Result</span><()> { |
| <span class="kw">let </span><span class="kw-2">mut </span>buf = [<span class="number">0</span>; <span class="number">2</span>]; |
| T::write_u16(<span class="kw-2">&mut </span>buf, n); |
| <span class="self">self</span>.write_all(<span class="kw-2">&</span>buf) |
| } |
| |
| <span class="doccomment">/// 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"); |
| /// ``` |
| </span><span class="attribute">#[inline] |
| </span><span class="kw">fn </span>write_i16<T: ByteOrder>(<span class="kw-2">&mut </span><span class="self">self</span>, n: i16) -> <span class="prelude-ty">Result</span><()> { |
| <span class="kw">let </span><span class="kw-2">mut </span>buf = [<span class="number">0</span>; <span class="number">2</span>]; |
| T::write_i16(<span class="kw-2">&mut </span>buf, n); |
| <span class="self">self</span>.write_all(<span class="kw-2">&</span>buf) |
| } |
| |
| <span class="doccomment">/// 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"); |
| /// ``` |
| </span><span class="attribute">#[inline] |
| </span><span class="kw">fn </span>write_u24<T: ByteOrder>(<span class="kw-2">&mut </span><span class="self">self</span>, n: u32) -> <span class="prelude-ty">Result</span><()> { |
| <span class="kw">let </span><span class="kw-2">mut </span>buf = [<span class="number">0</span>; <span class="number">3</span>]; |
| T::write_u24(<span class="kw-2">&mut </span>buf, n); |
| <span class="self">self</span>.write_all(<span class="kw-2">&</span>buf) |
| } |
| |
| <span class="doccomment">/// 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"); |
| /// ``` |
| </span><span class="attribute">#[inline] |
| </span><span class="kw">fn </span>write_i24<T: ByteOrder>(<span class="kw-2">&mut </span><span class="self">self</span>, n: i32) -> <span class="prelude-ty">Result</span><()> { |
| <span class="kw">let </span><span class="kw-2">mut </span>buf = [<span class="number">0</span>; <span class="number">3</span>]; |
| T::write_i24(<span class="kw-2">&mut </span>buf, n); |
| <span class="self">self</span>.write_all(<span class="kw-2">&</span>buf) |
| } |
| |
| <span class="doccomment">/// 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"); |
| /// ``` |
| </span><span class="attribute">#[inline] |
| </span><span class="kw">fn </span>write_u32<T: ByteOrder>(<span class="kw-2">&mut </span><span class="self">self</span>, n: u32) -> <span class="prelude-ty">Result</span><()> { |
| <span class="kw">let </span><span class="kw-2">mut </span>buf = [<span class="number">0</span>; <span class="number">4</span>]; |
| T::write_u32(<span class="kw-2">&mut </span>buf, n); |
| <span class="self">self</span>.write_all(<span class="kw-2">&</span>buf) |
| } |
| |
| <span class="doccomment">/// 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"); |
| /// ``` |
| </span><span class="attribute">#[inline] |
| </span><span class="kw">fn </span>write_i32<T: ByteOrder>(<span class="kw-2">&mut </span><span class="self">self</span>, n: i32) -> <span class="prelude-ty">Result</span><()> { |
| <span class="kw">let </span><span class="kw-2">mut </span>buf = [<span class="number">0</span>; <span class="number">4</span>]; |
| T::write_i32(<span class="kw-2">&mut </span>buf, n); |
| <span class="self">self</span>.write_all(<span class="kw-2">&</span>buf) |
| } |
| |
| <span class="doccomment">/// 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"); |
| /// ``` |
| </span><span class="attribute">#[inline] |
| </span><span class="kw">fn </span>write_u48<T: ByteOrder>(<span class="kw-2">&mut </span><span class="self">self</span>, n: u64) -> <span class="prelude-ty">Result</span><()> { |
| <span class="kw">let </span><span class="kw-2">mut </span>buf = [<span class="number">0</span>; <span class="number">6</span>]; |
| T::write_u48(<span class="kw-2">&mut </span>buf, n); |
| <span class="self">self</span>.write_all(<span class="kw-2">&</span>buf) |
| } |
| |
| <span class="doccomment">/// 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"); |
| /// ``` |
| </span><span class="attribute">#[inline] |
| </span><span class="kw">fn </span>write_i48<T: ByteOrder>(<span class="kw-2">&mut </span><span class="self">self</span>, n: i64) -> <span class="prelude-ty">Result</span><()> { |
| <span class="kw">let </span><span class="kw-2">mut </span>buf = [<span class="number">0</span>; <span class="number">6</span>]; |
| T::write_i48(<span class="kw-2">&mut </span>buf, n); |
| <span class="self">self</span>.write_all(<span class="kw-2">&</span>buf) |
| } |
| |
| <span class="doccomment">/// 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"); |
| /// ``` |
| </span><span class="attribute">#[inline] |
| </span><span class="kw">fn </span>write_u64<T: ByteOrder>(<span class="kw-2">&mut </span><span class="self">self</span>, n: u64) -> <span class="prelude-ty">Result</span><()> { |
| <span class="kw">let </span><span class="kw-2">mut </span>buf = [<span class="number">0</span>; <span class="number">8</span>]; |
| T::write_u64(<span class="kw-2">&mut </span>buf, n); |
| <span class="self">self</span>.write_all(<span class="kw-2">&</span>buf) |
| } |
| |
| <span class="doccomment">/// 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"); |
| /// ``` |
| </span><span class="attribute">#[inline] |
| </span><span class="kw">fn </span>write_i64<T: ByteOrder>(<span class="kw-2">&mut </span><span class="self">self</span>, n: i64) -> <span class="prelude-ty">Result</span><()> { |
| <span class="kw">let </span><span class="kw-2">mut </span>buf = [<span class="number">0</span>; <span class="number">8</span>]; |
| T::write_i64(<span class="kw-2">&mut </span>buf, n); |
| <span class="self">self</span>.write_all(<span class="kw-2">&</span>buf) |
| } |
| |
| <span class="doccomment">/// Writes an unsigned 128 bit integer to the underlying writer. |
| </span><span class="attribute">#[inline] |
| </span><span class="kw">fn </span>write_u128<T: ByteOrder>(<span class="kw-2">&mut </span><span class="self">self</span>, n: u128) -> <span class="prelude-ty">Result</span><()> { |
| <span class="kw">let </span><span class="kw-2">mut </span>buf = [<span class="number">0</span>; <span class="number">16</span>]; |
| T::write_u128(<span class="kw-2">&mut </span>buf, n); |
| <span class="self">self</span>.write_all(<span class="kw-2">&</span>buf) |
| } |
| |
| <span class="doccomment">/// Writes a signed 128 bit integer to the underlying writer. |
| </span><span class="attribute">#[inline] |
| </span><span class="kw">fn </span>write_i128<T: ByteOrder>(<span class="kw-2">&mut </span><span class="self">self</span>, n: i128) -> <span class="prelude-ty">Result</span><()> { |
| <span class="kw">let </span><span class="kw-2">mut </span>buf = [<span class="number">0</span>; <span class="number">16</span>]; |
| T::write_i128(<span class="kw-2">&mut </span>buf, n); |
| <span class="self">self</span>.write_all(<span class="kw-2">&</span>buf) |
| } |
| |
| <span class="doccomment">/// 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"); |
| /// ``` |
| </span><span class="attribute">#[inline] |
| </span><span class="kw">fn </span>write_uint<T: ByteOrder>( |
| <span class="kw-2">&mut </span><span class="self">self</span>, |
| n: u64, |
| nbytes: usize, |
| ) -> <span class="prelude-ty">Result</span><()> { |
| <span class="kw">let </span><span class="kw-2">mut </span>buf = [<span class="number">0</span>; <span class="number">8</span>]; |
| T::write_uint(<span class="kw-2">&mut </span>buf, n, nbytes); |
| <span class="self">self</span>.write_all(<span class="kw-2">&</span>buf[<span class="number">0</span>..nbytes]) |
| } |
| |
| <span class="doccomment">/// 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"); |
| /// ``` |
| </span><span class="attribute">#[inline] |
| </span><span class="kw">fn </span>write_int<T: ByteOrder>( |
| <span class="kw-2">&mut </span><span class="self">self</span>, |
| n: i64, |
| nbytes: usize, |
| ) -> <span class="prelude-ty">Result</span><()> { |
| <span class="kw">let </span><span class="kw-2">mut </span>buf = [<span class="number">0</span>; <span class="number">8</span>]; |
| T::write_int(<span class="kw-2">&mut </span>buf, n, nbytes); |
| <span class="self">self</span>.write_all(<span class="kw-2">&</span>buf[<span class="number">0</span>..nbytes]) |
| } |
| |
| <span class="doccomment">/// 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. |
| </span><span class="attribute">#[inline] |
| </span><span class="kw">fn </span>write_uint128<T: ByteOrder>( |
| <span class="kw-2">&mut </span><span class="self">self</span>, |
| n: u128, |
| nbytes: usize, |
| ) -> <span class="prelude-ty">Result</span><()> { |
| <span class="kw">let </span><span class="kw-2">mut </span>buf = [<span class="number">0</span>; <span class="number">16</span>]; |
| T::write_uint128(<span class="kw-2">&mut </span>buf, n, nbytes); |
| <span class="self">self</span>.write_all(<span class="kw-2">&</span>buf[<span class="number">0</span>..nbytes]) |
| } |
| |
| <span class="doccomment">/// 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. |
| </span><span class="attribute">#[inline] |
| </span><span class="kw">fn </span>write_int128<T: ByteOrder>( |
| <span class="kw-2">&mut </span><span class="self">self</span>, |
| n: i128, |
| nbytes: usize, |
| ) -> <span class="prelude-ty">Result</span><()> { |
| <span class="kw">let </span><span class="kw-2">mut </span>buf = [<span class="number">0</span>; <span class="number">16</span>]; |
| T::write_int128(<span class="kw-2">&mut </span>buf, n, nbytes); |
| <span class="self">self</span>.write_all(<span class="kw-2">&</span>buf[<span class="number">0</span>..nbytes]) |
| } |
| |
| <span class="doccomment">/// 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"); |
| /// ``` |
| </span><span class="attribute">#[inline] |
| </span><span class="kw">fn </span>write_f32<T: ByteOrder>(<span class="kw-2">&mut </span><span class="self">self</span>, n: f32) -> <span class="prelude-ty">Result</span><()> { |
| <span class="kw">let </span><span class="kw-2">mut </span>buf = [<span class="number">0</span>; <span class="number">4</span>]; |
| T::write_f32(<span class="kw-2">&mut </span>buf, n); |
| <span class="self">self</span>.write_all(<span class="kw-2">&</span>buf) |
| } |
| |
| <span class="doccomment">/// 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"); |
| /// ``` |
| </span><span class="attribute">#[inline] |
| </span><span class="kw">fn </span>write_f64<T: ByteOrder>(<span class="kw-2">&mut </span><span class="self">self</span>, n: f64) -> <span class="prelude-ty">Result</span><()> { |
| <span class="kw">let </span><span class="kw-2">mut </span>buf = [<span class="number">0</span>; <span class="number">8</span>]; |
| T::write_f64(<span class="kw-2">&mut </span>buf, n); |
| <span class="self">self</span>.write_all(<span class="kw-2">&</span>buf) |
| } |
| } |
| |
| <span class="doccomment">/// All types that implement `Write` get methods defined in `WriteBytesExt` |
| /// for free. |
| </span><span class="kw">impl</span><W: io::Write + <span class="question-mark">?</span>Sized> WriteBytesExt <span class="kw">for </span>W {} |
| |
| <span class="doccomment">/// 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. |
| </span><span class="kw">unsafe fn </span>slice_to_u8_mut<T: Copy>(slice: <span class="kw-2">&mut </span>[T]) -> <span class="kw-2">&mut </span>[u8] { |
| <span class="kw">use </span>std::mem::size_of; |
| |
| <span class="kw">let </span>len = size_of::<T>() * slice.len(); |
| slice::from_raw_parts_mut(slice.as_mut_ptr() <span class="kw">as </span><span class="kw-2">*mut </span>u8, len) |
| } |
| </code></pre></div> |
| </section></div></main><div id="rustdoc-vars" data-root-path="../../" data-current-crate="byteorder" data-themes="ayu,dark,light" data-resource-suffix="" data-rustdoc-version="1.66.0-nightly (5c8bff74b 2022-10-21)" ></div></body></html> |