Crate zenzop 

A faster fork of the Zopfli compression library.

Zopfli is a state of the art DEFLATE compressor that heavily prioritizes compression over speed. zenzop produces identical output to zopfli but runs 2-3x faster through algorithmic improvements: eliminating redundant hash chain walks, precomputed cost tables, and a buffered bit writer.

With Options::enhanced enabled, zenzop applies ECT-derived optimizations — expanded precode search, multi-strategy Huffman tree selection, and enhanced parser diversification — to produce smaller output than standard Zopfli.

Features

This crate exposes the following features. You can enable or disable them in your Cargo.toml as needed.

• gzip (enabled by default): enables support for compression in the gzip format.
• zlib (enabled by default): enables support for compression in the Zlib format.
• std (enabled by default): enables linking against the Rust standard library. When not enabled, the crate is built with the #![no_std] attribute and can be used in any environment where alloc (i.e., a memory allocator) is available. In addition, the crate exposes minimalist versions of the std I/O traits it needs to function, allowing users to implement them.
• nightly: enables code constructs and features specific to the nightly Rust toolchain. Currently, this feature improves rustdoc generation.

Structs

CompressResult

The result of a compression operation.

DeflateEncoder

A DEFLATE encoder powered by the Zopfli algorithm that compresses data written to it to the specified sink. Most users will find using compress easier and more performant.

ErrorNon-std

The error type for I/O operations of the Write trait.

GzipEncodergzip

A Gzip encoder powered by the Zopfli algorithm, that compresses data using a DeflateEncoder. Most users will find using compress easier and more performant.

Options

Options for the Zopfli compression algorithm.

Unstoppable

A Stop implementation that never stops (no cooperative cancellation).

ZlibEncoderzlib

A Zlib encoder powered by the Zopfli algorithm, that compresses data using a DeflateEncoder. Most users will find using compress easier and more performant.

Enums

BlockType

The type of data blocks to generate for a DEFLATE stream.

ErrorKindNon-std

A list specifying general categories of I/O error.

Formatstd

The output file format to use to store data compressed with Zopfli.

StopReason

Why an operation was stopped.

Traits

Stop

Cooperative cancellation check.

WriteNon-std

A trait for objects which are byte-oriented sinks, modeled after its std::io::Write counterpart.

Functions

compressstd

Compresses data from a source with the Zopfli algorithm, using the specified options, and writes the result to a sink in the defined output format.