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Constants ¶
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const UseStandardZstdLib = true
UseStandardZstdLib indicates whether the zstd implementation is a port of the official one in the facebook/zstd repository.
This constant is only used in tests. Some tests rely on reproducibility of SST files, but a custom implementation of zstd will produce different compression result. So those tests have to be disabled in such cases.
We cannot always use the official facebook/zstd implementation since it relies on CGo.
Variables ¶
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Functions ¶
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Types ¶
type Compressor ¶
type Compressor interface {
// Compress a block, appending the compressed data to dst[:0].
Compress(dst, src []byte) []byte
// Close must be called when the Compressor is no longer needed.
// After Close is called, the Compressor must not be used again.
Close()
}
func GetCompressor ¶
func GetCompressor(a Algorithm) Compressor
type Decompressor ¶
type Decompressor interface {
// DecompressInto decompresses compressed into buf. The buf slice must have the
// exact size as the decompressed value. Callers may use DecompressedLen to
// determine the correct size.
DecompressInto(buf, compressed []byte) error
// DecompressedLen returns the length of the provided block once decompressed,
// allowing the caller to allocate a buffer exactly sized to the decompressed
// payload.
DecompressedLen(b []byte) (decompressedLen int, err error)
// Close must be called when the Decompressor is no longer needed.
// After Close is called, the Decompressor must not be used again.
Close()
}
func GetDecompressor ¶
func GetDecompressor(a Algorithm) Decompressor
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