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authorValentin Popov <valentin@popov.link>2024-07-19 15:37:58 +0300
committerValentin Popov <valentin@popov.link>2024-07-19 15:37:58 +0300
commita990de90fe41456a23e58bd087d2f107d321f3a1 (patch)
tree15afc392522a9e85dc3332235e311b7d39352ea9 /vendor/miniz_oxide/src/deflate/stream.rs
parent3d48cd3f81164bbfc1a755dc1d4a9a02f98c8ddd (diff)
downloadfparkan-a990de90fe41456a23e58bd087d2f107d321f3a1.tar.xz
fparkan-a990de90fe41456a23e58bd087d2f107d321f3a1.zip
Deleted vendor folder
Diffstat (limited to 'vendor/miniz_oxide/src/deflate/stream.rs')
-rw-r--r--vendor/miniz_oxide/src/deflate/stream.rs121
1 files changed, 0 insertions, 121 deletions
diff --git a/vendor/miniz_oxide/src/deflate/stream.rs b/vendor/miniz_oxide/src/deflate/stream.rs
deleted file mode 100644
index 39aa82d..0000000
--- a/vendor/miniz_oxide/src/deflate/stream.rs
+++ /dev/null
@@ -1,121 +0,0 @@
-//! Extra streaming compression functionality.
-//!
-//! As of now this is mainly intended for use to build a higher-level wrapper.
-//!
-//! There is no DeflateState as the needed state is contained in the compressor struct itself.
-
-use crate::deflate::core::{compress, CompressorOxide, TDEFLFlush, TDEFLStatus};
-use crate::{MZError, MZFlush, MZStatus, StreamResult};
-
-/// Try to compress from input to output with the given [`CompressorOxide`].
-///
-/// # Errors
-///
-/// Returns [`MZError::Buf`] If the size of the `output` slice is empty or no progress was made due
-/// to lack of expected input data, or if called without [`MZFlush::Finish`] after the compression
-/// was already finished.
-///
-/// Returns [`MZError::Param`] if the compressor parameters are set wrong.
-///
-/// Returns [`MZError::Stream`] when lower-level decompressor returns a
-/// [`TDEFLStatus::PutBufFailed`]; may not actually be possible.
-pub fn deflate(
- compressor: &mut CompressorOxide,
- input: &[u8],
- output: &mut [u8],
- flush: MZFlush,
-) -> StreamResult {
- if output.is_empty() {
- return StreamResult::error(MZError::Buf);
- }
-
- if compressor.prev_return_status() == TDEFLStatus::Done {
- return if flush == MZFlush::Finish {
- StreamResult {
- bytes_written: 0,
- bytes_consumed: 0,
- status: Ok(MZStatus::StreamEnd),
- }
- } else {
- StreamResult::error(MZError::Buf)
- };
- }
-
- let mut bytes_written = 0;
- let mut bytes_consumed = 0;
-
- let mut next_in = input;
- let mut next_out = output;
-
- let status = loop {
- let in_bytes;
- let out_bytes;
- let defl_status = {
- let res = compress(compressor, next_in, next_out, TDEFLFlush::from(flush));
- in_bytes = res.1;
- out_bytes = res.2;
- res.0
- };
-
- next_in = &next_in[in_bytes..];
- next_out = &mut next_out[out_bytes..];
- bytes_consumed += in_bytes;
- bytes_written += out_bytes;
-
- // Check if we are done, or compression failed.
- match defl_status {
- TDEFLStatus::BadParam => break Err(MZError::Param),
- // Don't think this can happen as we're not using a custom callback.
- TDEFLStatus::PutBufFailed => break Err(MZError::Stream),
- TDEFLStatus::Done => break Ok(MZStatus::StreamEnd),
- _ => (),
- };
-
- // All the output space was used, so wait for more.
- if next_out.is_empty() {
- break Ok(MZStatus::Ok);
- }
-
- if next_in.is_empty() && (flush != MZFlush::Finish) {
- let total_changed = bytes_written > 0 || bytes_consumed > 0;
-
- break if (flush != MZFlush::None) || total_changed {
- // We wrote or consumed something, and/or did a flush (sync/partial etc.).
- Ok(MZStatus::Ok)
- } else {
- // No more input data, not flushing, and nothing was consumed or written,
- // so couldn't make any progress.
- Err(MZError::Buf)
- };
- }
- };
- StreamResult {
- bytes_consumed,
- bytes_written,
- status,
- }
-}
-
-#[cfg(test)]
-mod test {
- use super::deflate;
- use crate::deflate::CompressorOxide;
- use crate::inflate::decompress_to_vec_zlib;
- use crate::{MZFlush, MZStatus};
- use alloc::boxed::Box;
- use alloc::vec;
-
- #[test]
- fn test_state() {
- let data = b"Hello zlib!";
- let mut compressed = vec![0; 50];
- let mut compressor = Box::<CompressorOxide>::default();
- let res = deflate(&mut compressor, data, &mut compressed, MZFlush::Finish);
- let status = res.status.expect("Failed to compress!");
- let decomp =
- decompress_to_vec_zlib(&compressed).expect("Failed to decompress compressed data");
- assert_eq!(status, MZStatus::StreamEnd);
- assert_eq!(decomp[..], data[..]);
- assert_eq!(res.bytes_consumed, data.len());
- }
-}