std.flate

deflate both ways (rfc 1951), gzip (rfc 1952), zlib (rfc 1950)

FlateError

pub FlateError :: errors {
    truncated,
    bad_block,
    bad_code,
    bad_distance,
    bad_header,
    bad_checksum,
}

• truncated: the data ends before the stream does
• bad_block: block type 3, or stored length check fails
• bad_code: bad code lengths, or a code not in the table
• bad_distance: back-ref before the start of the output
• bad_header: not gzip/zlib, or a zlib preset dictionary
• bad_checksum: crc-32, adler-32 or length mismatch

inflate

pub inflate :: fn(a: *Arena, data: []const u8) -> []u8 ! FlateError

raw deflate (rfc 1951), result in a; bytes after the stream ignored

gunzip

pub gunzip :: fn(a: *Arena, data: []const u8) -> []u8 ! FlateError

gzip content in a; checks crc-32 and length; first member only

unzlib

pub unzlib :: fn(a: *Arena, data: []const u8) -> []u8 ! FlateError

zlib (rfc 1950) content in a; checks adler-32; preset dictionary -> .bad_header

deflate

pub deflate :: fn(a: *Arena, data: []const u8, level: u32) -> []u8

raw deflate (rfc 1951) in a; level 0 stores, 1 fastest, 9 smallest, 6 balanced

gzip

pub gzip :: fn(a: *Arena, data: []const u8, level: u32) -> []u8

gzip in a: header without name/time, deflate at level, crc-32, length

zlib

pub zlib :: fn(a: *Arena, data: []const u8, level: u32) -> []u8

zlib (rfc 1950) in a: 2-byte header, deflate at level, adler-32