Crate zenzop 

A faster fork of the Zopfli compression library.

Zopfli is a DEFLATE compressor that produces near-optimal output at the cost of speed. zenzop produces identical output to zopfli but runs 1.2–2x faster through algorithmic improvements: precomputed cost tables, SIMD-accelerated match comparison, and a skip-hash optimization that eliminates redundant hash chain walks on cached iterations.

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.

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.

Error

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

GzipEncoder

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).

ZlibEncoder

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.

ErrorKind

A list specifying general categories of I/O error.

Format

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

StopReason

Why an operation was stopped.

Traits

Stop

Cooperative cancellation check.

Write

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

Functions

compress

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.