Zlib

Struct · namespace System.Compression · Since 0.28

struct Zlib

Deflate data in the zlib container (RFC 1950): a 2-byte header, the data and the Adler-32 checksum. PNG images keep their pixels like this.

Static methods

Name	Description
Compress	data compressed with level 6.
Decompress	The bytes of the zlib data data; the checksum is checked.

Compress

static uint8[] Compress(ReadOnlySlice<uint8> data)

data compressed with level 6.

static uint8[] Compress(ReadOnlySlice<uint8> data, int level)

data compressed with level (0 to 9, see Deflate.Compress).

Panics when level is not 0 to 9.

Decompress

static CompressionError<uint8[]> Decompress(ReadOnlySlice<uint8> data)

The bytes of the zlib data data; the checksum is checked. Bytes after the checksum are ignored.

Errors

• CompressionError.InvalidData: the header is not one of zlib (or asks for a preset dictionary), or the deflate data is not valid.
• CompressionError.Truncated: data ends before the end of the stream or its checksum.
• CompressionError.ChecksumMismatch: the Adler-32 checksum does not match.