27 lines
847 B
Rust
27 lines
847 B
Rust
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extern crate flate2;
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use flate2::write::{GzDecoder, GzEncoder};
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use flate2::Compression;
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use std::io;
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use std::io::prelude::*;
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// Compress a sample string and print it after transformation.
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fn main() {
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let mut e = GzEncoder::new(Vec::new(), Compression::default());
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e.write_all(b"Hello World").unwrap();
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let bytes = e.finish().unwrap();
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println!("{}", decode_writer(bytes).unwrap());
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}
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// Uncompresses a Gz Encoded vector of bytes and returns a string or error
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// Here &[u8] implements Read
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fn decode_writer(bytes: Vec<u8>) -> io::Result<String> {
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let mut writer = Vec::new();
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let mut decoder = GzDecoder::new(writer);
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decoder.write_all(&bytes[..])?;
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decoder.try_finish()?;
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writer = decoder.finish()?;
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let return_string = String::from_utf8(writer).expect("String parsing error");
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Ok(return_string)
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}
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