rev_buf_reader

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A struct similar to BufReader that reads a data stream in reverse order.

rev_buf_reader 최신버젼 다운로드

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# rev_buf_reader

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This Rust crate provides a buffered reader capable of reading chunks of bytes of a data stream in reverse order. Its implementation is an adapted copy of BufReader from the nightly std::io.

# Usage

## Reading chunks of bytes in reverse order:

```rust
extern crate rev_buf_reader;

use rev_buf_reader::RevBufReader;
use std::io::{self, Read};

let data = [0, 1, 2, 3, 4, 5, 6, 7];
let inner = io::Cursor::new(&data);
let mut reader = RevBufReader::new(inner);

let mut buffer = [0, 0, 0];
assert_eq!(reader.read(&mut buffer).ok(), Some(3));
assert_eq!(buffer, [5, 6, 7]);

let mut buffer = [0, 0, 0, 0, 0];
assert_eq!(reader.read(&mut buffer).ok(), Some(5));
assert_eq!(buffer, [0, 1, 2, 3, 4]);
```

## Reading text lines in reverse order:

```rust
extern crate rev_buf_reader;

use rev_buf_reader::RevBufReader;
use std::io::{self, BufRead};

let data = "This\nis\na sentence";
let inner = io::Cursor::new(&data);
let reader = RevBufReader::new(inner);
let mut lines = reader.lines();

assert_eq!(lines.next().unwrap().unwrap(), "a sentence".to_string());
assert_eq!(lines.next().unwrap().unwrap(), "is".to_string());
assert_eq!(lines.next().unwrap().unwrap(), "This".to_string());
assert!(lines.next().is_none());
```

# Features

**rev_buf_reader** has one feature: `read_initializer`, which corresponds to an
experimental feature of nightly Rust. If you use it in your project by adding
`#![feature(read_initializer)]`, you'll need to enable it for **rev_buf_reader**
as well in your Cargo.toml.

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