package core:compress/bzip2

Source

BZip2 :: struct {
	block:        [900034]u8,
	ptr:          [900000]u32,
	work:         [900034]u32,
	ftab:         [65537]u32,
	nblock:       int,
	nblock_max:   int,
	orig_ptr:     int,
	n_in_use:     int,
	n_mtf:        int,
	in_ch:        u32,
	in_len:       int,
	out:          []u8,
	out_pos:      int,
	bits:         u64,
	live:         uint,
	in_use:       [256]bool,
	unseq_to_seq: [256]u8,
	mtf_freq:     [258]i32,
	lengths:      [6][258]u8,
	codes:        [6][258]u32,
	rfreq:        [6][258]i32,
	len_pack:     [258][3]u32,
	selector:     [18002]u8,
	selector_mtf: [18002]u8,
}

BZip2_Error :: compress.BZip2_Error

Error :: compress.Error

General_Error :: compress.General_Error

Level :: enum i32 {
	Level_1 = 1, 
	Level_2 = 2, 
	Level_3 = 3, 
	Level_4 = 4, 
	Level_5 = 5, 
	Level_6 = 6, 
	Level_7 = 7, 
	Level_8 = 8, 
	Level_9 = 9, 
	Fastest = Level_1, 
	Default = Level_9, 
	Best    = Level_9, 
}

BLOCK_MAGIC :: u64(0x314159265359)

BZIP2_INTERLEAVE :: 4

END_MAGIC :: u64(0x177245385090)

compress_bound :: proc(length: int) -> int {…}

compress_to_dynamic :: proc(
	output:    ^[dynamic]u8, 
	input:     []u8, 
	level:     Level = Level.Default, 
	allocator := context.allocator, 
) -> (err: compress.Error) {…}

compress_to_slice :: proc(
	s:             ^BZip2, 
	output, input: []u8, 
	level:         Level = Level.Default, 
) -> (written: int, err: compress.Error) {…}

decompress_from_bytes :: proc(
	output:               ^[dynamic]u8, 
	input:                []u8, 
	expected_output_size: int = -1, 
	max_output_size:      int = compress.COMPRESS_OUTPUT_ALLOCATE_MAX, 
	allocator := context.allocator, 
) -> (err: compress.Error) {…}

decompress_from_context :: proc(
	z:                    ^compress.Context, 
	expected_output_size: int = -1, 
	max_output_size:      int = compress.COMPRESS_OUTPUT_ALLOCATE_MAX, 
	allocator := context.allocator, 
) -> (err: compress.Error) {…}

compress :: proc{
	compress_to_slice,
	compress_to_dynamic,
}

decompress :: proc{
	decompress_from_bytes,
	decompress_from_context,
}