ps-compress

Deterministic Zstandard compression for small binary payloads.

This crate exposes a small API around zstd with a fixed compression policy (zstd level 7), suitable for use-cases where the same input must always compress to the same output bytes.

API

• compress(data: &[u8]) -> Result<Buffer, CompressionError>
• compress_into(data: &[u8], out_data: &mut [u8]) -> Result<usize, CompressionError>
• decompress(data: &[u8]) -> Result<Buffer, DecompressionError>
• decompress_bounded(data: &[u8], max_output_bytes: usize) -> Result<Buffer, DecompressionError>
• decompress_into(data: &[u8], out_data: &mut [u8]) -> Result<usize, DecompressionError>

Example

use ps_compress::{compress, decompress};

let input = b"example payload";
let compressed = compress(input)?;
let decompressed = decompress(&compressed)?;

assert_eq!(decompressed.as_slice(), input);
# Ok::<(), Box<dyn std::error::Error>>(())

Determinism Notes

• Compression parameters are fixed by this crate.
• For strict cross-environment determinism, keep the crate dependency pinned so all environments use the same zstd implementation version.