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Diffstat (limited to 'vendor/flate2/src/deflate/bufread.rs')
| -rw-r--r-- | vendor/flate2/src/deflate/bufread.rs | 245 |
1 files changed, 0 insertions, 245 deletions
diff --git a/vendor/flate2/src/deflate/bufread.rs b/vendor/flate2/src/deflate/bufread.rs deleted file mode 100644 index c70a630..0000000 --- a/vendor/flate2/src/deflate/bufread.rs +++ /dev/null @@ -1,245 +0,0 @@ -use std::io; -use std::io::prelude::*; -use std::mem; - -use crate::zio; -use crate::{Compress, Decompress}; - -/// A DEFLATE encoder, or compressor. -/// -/// This structure implements a [`Read`] interface. When read from, it reads -/// uncompressed data from the underlying [`BufRead`] and provides the compressed data. -/// -/// [`Read`]: https://doc.rust-lang.org/std/io/trait.Read.html -/// [`BufRead`]: https://doc.rust-lang.org/std/io/trait.BufRead.html -/// -/// # Examples -/// -/// ``` -/// use std::io::prelude::*; -/// use std::io; -/// use flate2::Compression; -/// use flate2::bufread::DeflateEncoder; -/// use std::fs::File; -/// use std::io::BufReader; -/// -/// # fn main() { -/// # println!("{:?}", open_hello_world().unwrap()); -/// # } -/// # -/// // Opens sample file, compresses the contents and returns a Vector -/// fn open_hello_world() -> io::Result<Vec<u8>> { -/// let f = File::open("examples/hello_world.txt")?; -/// let b = BufReader::new(f); -/// let mut deflater = DeflateEncoder::new(b, Compression::fast()); -/// let mut buffer = Vec::new(); -/// deflater.read_to_end(&mut buffer)?; -/// Ok(buffer) -/// } -/// ``` -#[derive(Debug)] -pub struct DeflateEncoder<R> { - obj: R, - data: Compress, -} - -impl<R: BufRead> DeflateEncoder<R> { - /// Creates a new encoder which will read uncompressed data from the given - /// stream and emit the compressed stream. - pub fn new(r: R, level: crate::Compression) -> DeflateEncoder<R> { - DeflateEncoder { - obj: r, - data: Compress::new(level, false), - } - } -} - -pub fn reset_encoder_data<R>(zlib: &mut DeflateEncoder<R>) { - zlib.data.reset(); -} - -impl<R> DeflateEncoder<R> { - /// Resets the state of this encoder entirely, swapping out the input - /// stream for another. - /// - /// This function will reset the internal state of this encoder and replace - /// the input stream with the one provided, returning the previous input - /// stream. Future data read from this encoder will be the compressed - /// version of `r`'s data. - pub fn reset(&mut self, r: R) -> R { - reset_encoder_data(self); - mem::replace(&mut self.obj, r) - } - - /// Acquires a reference to the underlying reader - pub fn get_ref(&self) -> &R { - &self.obj - } - - /// Acquires a mutable reference to the underlying stream - /// - /// Note that mutation of the stream may result in surprising results if - /// this encoder is continued to be used. - pub fn get_mut(&mut self) -> &mut R { - &mut self.obj - } - - /// Consumes this encoder, returning the underlying reader. - pub fn into_inner(self) -> R { - self.obj - } - - /// Returns the number of bytes that have been read into this compressor. - /// - /// Note that not all bytes read from the underlying object may be accounted - /// for, there may still be some active buffering. - pub fn total_in(&self) -> u64 { - self.data.total_in() - } - - /// Returns the number of bytes that the compressor has produced. - /// - /// Note that not all bytes may have been read yet, some may still be - /// buffered. - pub fn total_out(&self) -> u64 { - self.data.total_out() - } -} - -impl<R: BufRead> Read for DeflateEncoder<R> { - fn read(&mut self, buf: &mut [u8]) -> io::Result<usize> { - zio::read(&mut self.obj, &mut self.data, buf) - } -} - -impl<W: BufRead + Write> Write for DeflateEncoder<W> { - fn write(&mut self, buf: &[u8]) -> io::Result<usize> { - self.get_mut().write(buf) - } - - fn flush(&mut self) -> io::Result<()> { - self.get_mut().flush() - } -} - -/// A DEFLATE decoder, or decompressor. -/// -/// This structure implements a [`Read`] interface. When read from, it reads -/// compressed data from the underlying [`BufRead`] and provides the uncompressed data. -/// -/// [`Read`]: https://doc.rust-lang.org/std/io/trait.Read.html -/// [`BufRead`]: https://doc.rust-lang.org/std/io/trait.BufRead.html -/// -/// # Examples -/// -/// ``` -/// use std::io::prelude::*; -/// use std::io; -/// # use flate2::Compression; -/// # use flate2::write::DeflateEncoder; -/// use flate2::bufread::DeflateDecoder; -/// -/// # fn main() { -/// # let mut e = DeflateEncoder::new(Vec::new(), Compression::default()); -/// # e.write_all(b"Hello World").unwrap(); -/// # let bytes = e.finish().unwrap(); -/// # println!("{}", decode_reader(bytes).unwrap()); -/// # } -/// // Uncompresses a Deflate Encoded vector of bytes and returns a string or error -/// // Here &[u8] implements Read -/// fn decode_reader(bytes: Vec<u8>) -> io::Result<String> { -/// let mut deflater = DeflateDecoder::new(&bytes[..]); -/// let mut s = String::new(); -/// deflater.read_to_string(&mut s)?; -/// Ok(s) -/// } -/// ``` -#[derive(Debug)] -pub struct DeflateDecoder<R> { - obj: R, - data: Decompress, -} - -pub fn reset_decoder_data<R>(zlib: &mut DeflateDecoder<R>) { - zlib.data = Decompress::new(false); -} - -impl<R: BufRead> DeflateDecoder<R> { - /// Creates a new decoder which will decompress data read from the given - /// stream. - pub fn new(r: R) -> DeflateDecoder<R> { - DeflateDecoder { - obj: r, - data: Decompress::new(false), - } - } -} - -impl<R> DeflateDecoder<R> { - /// Resets the state of this decoder entirely, swapping out the input - /// stream for another. - /// - /// This will reset the internal state of this decoder and replace the - /// input stream with the one provided, returning the previous input - /// stream. Future data read from this decoder will be the decompressed - /// version of `r`'s data. - pub fn reset(&mut self, r: R) -> R { - reset_decoder_data(self); - mem::replace(&mut self.obj, r) - } - - /// Resets the state of this decoder's data - /// - /// This will reset the internal state of this decoder. It will continue - /// reading from the same stream. - pub fn reset_data(&mut self) { - reset_decoder_data(self); - } - - /// Acquires a reference to the underlying stream - pub fn get_ref(&self) -> &R { - &self.obj - } - - /// Acquires a mutable reference to the underlying stream - /// - /// Note that mutation of the stream may result in surprising results if - /// this decoder is continued to be used. - pub fn get_mut(&mut self) -> &mut R { - &mut self.obj - } - - /// Consumes this decoder, returning the underlying reader. - pub fn into_inner(self) -> R { - self.obj - } - - /// Returns the number of bytes that the decompressor has consumed. - /// - /// Note that this will likely be smaller than what the decompressor - /// actually read from the underlying stream due to buffering. - pub fn total_in(&self) -> u64 { - self.data.total_in() - } - - /// Returns the number of bytes that the decompressor has produced. - pub fn total_out(&self) -> u64 { - self.data.total_out() - } -} - -impl<R: BufRead> Read for DeflateDecoder<R> { - fn read(&mut self, into: &mut [u8]) -> io::Result<usize> { - zio::read(&mut self.obj, &mut self.data, into) - } -} - -impl<W: BufRead + Write> Write for DeflateDecoder<W> { - fn write(&mut self, buf: &[u8]) -> io::Result<usize> { - self.get_mut().write(buf) - } - - fn flush(&mut self) -> io::Result<()> { - self.get_mut().flush() - } -} |