A DEFLATE decoder written in rust.
This library provides functionality to decompress data compressed with the DEFLATE algorithm, both with and without a zlib header/trailer.
The easiest way to get std::Vec<u8> containing the decompressed bytes is to use either
inflate::inflate_bytes or inflate::inflate_bytes_zlib (depending on whether
the encoded data has zlib headers and trailers or not). The following example
decodes the DEFLATE encoded string "Hello, world" and prints it:
use inflate::inflate_bytes;
use std::str::from_utf8;
let encoded = [243, 72, 205, 201, 201, 215, 81, 40, 207, 47, 202, 73, 1, 0];
let decoded = inflate_bytes(&encoded).unwrap();
println!("{}", from_utf8(&decoded).unwrap()); // prints "Hello, world"If you need more flexibility, then the library also provides an implementation
of std::io::Writer in inflate::writer. Below is an example using an
inflate::writer::InflateWriter to decode the DEFLATE encoded string "Hello, world":
use inflate::InflateWriter;
use std::io::Write;
use std::str::from_utf8;
let encoded = [243, 72, 205, 201, 201, 215, 81, 40, 207, 47, 202, 73, 1, 0];
let mut decoder = InflateWriter::new(Vec::new());
decoder.write(&encoded).unwrap();
let decoded = decoder.finish().unwrap();
println!("{}", from_utf8(&decoded).unwrap()); // prints "Hello, world"Finally, if you need even more flexibility, or if you only want to depend on
core, you can use the inflate::InflateStream API. The below example
decodes an array of DEFLATE encoded bytes:
use inflate::InflateStream;
let data = [0x73, 0x49, 0x4d, 0xcb, 0x49, 0x2c, 0x49, 0x55, 0x00, 0x11, 0x00];
let mut inflater = InflateStream::new();
let mut out = Vec::<u8>::new();
let mut n = 0;
while n < data.len() {
let res = inflater.update(&data[n..]);
if let Ok((num_bytes_read, result)) = res {
n += num_bytes_read;
out.extend(result.iter().cloned());
} else {
res.unwrap();
}
}
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