From 4b2775ea5eda9cd6959e38435a87bc93cfc40d11 Mon Sep 17 00:00:00 2001 From: Andy Balholm Date: Fri, 8 May 2020 15:14:47 -0700 Subject: [PATCH] Fix some ugly compound literals. --- encode.go | 575 ++++++------------------------------------------------ 1 file changed, 56 insertions(+), 519 deletions(-) diff --git a/encode.go b/encode.go index 375a470..c9e9763 100644 --- a/encode.go +++ b/encode.go @@ -217,332 +217,6 @@ func encodeWindowBits(lgwin int, large_window bool, last_bytes *uint16, last_byt } } -/* Initializes the command and distance prefix codes for the first block. */ - -var initCommandPrefixCodes_kDefaultCommandDepths = [128]byte{ - 0, - 4, - 4, - 5, - 6, - 6, - 7, - 7, - 7, - 7, - 7, - 8, - 8, - 8, - 8, - 8, - 0, - 0, - 0, - 4, - 4, - 4, - 4, - 4, - 5, - 5, - 6, - 6, - 6, - 6, - 7, - 7, - 7, - 7, - 10, - 10, - 10, - 10, - 10, - 10, - 0, - 4, - 4, - 5, - 5, - 5, - 6, - 6, - 7, - 8, - 8, - 9, - 10, - 10, - 10, - 10, - 10, - 10, - 10, - 10, - 10, - 10, - 10, - 10, - 5, - 0, - 0, - 0, - 0, - 0, - 0, - 0, - 0, - 0, - 0, - 0, - 0, - 0, - 0, - 0, - 6, - 6, - 6, - 6, - 6, - 6, - 5, - 5, - 5, - 5, - 5, - 5, - 4, - 4, - 4, - 4, - 4, - 4, - 4, - 5, - 5, - 5, - 5, - 5, - 5, - 6, - 6, - 7, - 7, - 7, - 8, - 10, - 12, - 12, - 12, - 12, - 12, - 12, - 12, - 12, - 12, - 12, - 12, - 12, -} -var initCommandPrefixCodes_kDefaultCommandBits = [128]uint16{ - 0, - 0, - 8, - 9, - 3, - 35, - 7, - 71, - 39, - 103, - 23, - 47, - 175, - 111, - 239, - 31, - 0, - 0, - 0, - 4, - 12, - 2, - 10, - 6, - 13, - 29, - 11, - 43, - 27, - 59, - 87, - 55, - 15, - 79, - 319, - 831, - 191, - 703, - 447, - 959, - 0, - 14, - 1, - 25, - 5, - 21, - 19, - 51, - 119, - 159, - 95, - 223, - 479, - 991, - 63, - 575, - 127, - 639, - 383, - 895, - 255, - 767, - 511, - 1023, - 14, - 0, - 0, - 0, - 0, - 0, - 0, - 0, - 0, - 0, - 0, - 0, - 0, - 0, - 0, - 0, - 27, - 59, - 7, - 39, - 23, - 55, - 30, - 1, - 17, - 9, - 25, - 5, - 0, - 8, - 4, - 12, - 2, - 10, - 6, - 21, - 13, - 29, - 3, - 19, - 11, - 15, - 47, - 31, - 95, - 63, - 127, - 255, - 767, - 2815, - 1791, - 3839, - 511, - 2559, - 1535, - 3583, - 1023, - 3071, - 2047, - 4095, -} -var initCommandPrefixCodes_kDefaultCommandCode = []byte{ - 0xff, - 0x77, - 0xd5, - 0xbf, - 0xe7, - 0xde, - 0xea, - 0x9e, - 0x51, - 0x5d, - 0xde, - 0xc6, - 0x70, - 0x57, - 0xbc, - 0x58, - 0x58, - 0x58, - 0xd8, - 0xd8, - 0x58, - 0xd5, - 0xcb, - 0x8c, - 0xea, - 0xe0, - 0xc3, - 0x87, - 0x1f, - 0x83, - 0xc1, - 0x60, - 0x1c, - 0x67, - 0xb2, - 0xaa, - 0x06, - 0x83, - 0xc1, - 0x60, - 0x30, - 0x18, - 0xcc, - 0xa1, - 0xce, - 0x88, - 0x54, - 0x94, - 0x46, - 0xe1, - 0xb0, - 0xd0, - 0x4e, - 0xb2, - 0xf7, - 0x04, - 0x00, -} -var initCommandPrefixCodes_kDefaultCommandCodeNumBits uint = 448 - -func initCommandPrefixCodes(cmd_depths []byte, cmd_bits []uint16, cmd_code []byte, cmd_code_numbits *uint) { - copy(cmd_depths, initCommandPrefixCodes_kDefaultCommandDepths[:]) - copy(cmd_bits, initCommandPrefixCodes_kDefaultCommandBits[:]) - - /* Initialize the pre-compressed form of the command and distance prefix - codes. */ - copy(cmd_code, initCommandPrefixCodes_kDefaultCommandCode) - - *cmd_code_numbits = initCommandPrefixCodes_kDefaultCommandCodeNumBits -} - /* Decide about the context map based on the ability of the prediction ability of the previous byte UTF8-prefix on the next byte. The prediction ability is calculated as Shannon entropy. Here we need @@ -552,136 +226,16 @@ func initCommandPrefixCodes(cmd_depths []byte, cmd_bits []uint16, cmd_code []byt coding. */ var kStaticContextMapContinuation = [64]uint32{ - 1, - 1, - 2, - 2, - 0, - 0, - 0, - 0, - 0, - 0, - 0, - 0, - 0, - 0, - 0, - 0, - 0, - 0, - 0, - 0, - 0, - 0, - 0, - 0, - 0, - 0, - 0, - 0, - 0, - 0, - 0, - 0, - 0, - 0, - 0, - 0, - 0, - 0, - 0, - 0, - 0, - 0, - 0, - 0, - 0, - 0, - 0, - 0, - 0, - 0, - 0, - 0, - 0, - 0, - 0, - 0, - 0, - 0, - 0, - 0, - 0, - 0, - 0, - 0, + 1, 1, 2, 2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, } var kStaticContextMapSimpleUTF8 = [64]uint32{ - 0, - 0, - 1, - 1, - 0, - 0, - 0, - 0, - 0, - 0, - 0, - 0, - 0, - 0, - 0, - 0, - 0, - 0, - 0, - 0, - 0, - 0, - 0, - 0, - 0, - 0, - 0, - 0, - 0, - 0, - 0, - 0, - 0, - 0, - 0, - 0, - 0, - 0, - 0, - 0, - 0, - 0, - 0, - 0, - 0, - 0, - 0, - 0, - 0, - 0, - 0, - 0, - 0, - 0, - 0, - 0, - 0, - 0, - 0, - 0, - 0, - 0, - 0, - 0, + 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, } func chooseContextMap(quality int, bigram_histo []uint32, num_literal_contexts *uint, literal_context_map *[]uint32) { @@ -733,70 +287,22 @@ func chooseContextMap(quality int, bigram_histo []uint32, num_literal_contexts * first 5 bits of literals. */ var kStaticContextMapComplexUTF8 = [64]uint32{ - 11, - 11, - 12, - 12, - 0, - 0, - 0, - 0, - 1, - 1, - 9, - 9, - 2, - 2, - 2, - 2, - 1, - 1, - 1, - 1, - 8, - 3, - 3, - 3, - 1, - 1, - 1, - 1, - 2, - 2, - 2, - 2, - 8, - 4, - 4, - 4, - 8, - 7, - 4, - 4, - 8, - 0, - 0, - 0, - 3, - 3, - 3, - 3, - 5, - 5, - 10, - 5, - 5, - 5, - 10, - 5, - 6, - 6, - 6, - 6, - 6, - 6, - 6, - 6, + 11, 11, 12, 12, /* 0 special */ + 0, 0, 0, 0, /* 4 lf */ + 1, 1, 9, 9, /* 8 space */ + 2, 2, 2, 2, /* !, first after space/lf and after something else. */ + 1, 1, 1, 1, /* " */ + 8, 3, 3, 3, /* % */ + 1, 1, 1, 1, /* ({[ */ + 2, 2, 2, 2, /* }]) */ + 8, 4, 4, 4, /* :; */ + 8, 7, 4, 4, /* . */ + 8, 0, 0, 0, /* > */ + 3, 3, 3, 3, /* [0..9] */ + 5, 5, 10, 5, /* [A-Z] */ + 5, 5, 10, 5, + 6, 6, 6, 6, /* [a-z] */ + 6, 6, 6, 6, } func shouldUseComplexStaticContextMap(input []byte, start_pos uint, length uint, mask uint, quality int, size_hint uint, num_literal_contexts *uint, literal_context_map *[]uint32) bool { @@ -1051,7 +557,38 @@ func ensureInitialized(s *Writer) bool { } if s.params.quality == fastOnePassCompressionQuality { - initCommandPrefixCodes(s.cmd_depths_[:], s.cmd_bits_[:], s.cmd_code_[:], &s.cmd_code_numbits_) + s.cmd_depths_ = [128]byte{ + 0, 4, 4, 5, 6, 6, 7, 7, 7, 7, 7, 8, 8, 8, 8, 8, + 0, 0, 0, 4, 4, 4, 4, 4, 5, 5, 6, 6, 6, 6, 7, 7, + 7, 7, 10, 10, 10, 10, 10, 10, 0, 4, 4, 5, 5, 5, 6, 6, + 7, 8, 8, 9, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, + 5, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, + 4, 4, 4, 5, 5, 5, 5, 5, 5, 6, 6, 7, 7, 7, 8, 10, + 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, + } + s.cmd_bits_ = [128]uint16{ + 0, 0, 8, 9, 3, 35, 7, 71, + 39, 103, 23, 47, 175, 111, 239, 31, + 0, 0, 0, 4, 12, 2, 10, 6, + 13, 29, 11, 43, 27, 59, 87, 55, + 15, 79, 319, 831, 191, 703, 447, 959, + 0, 14, 1, 25, 5, 21, 19, 51, + 119, 159, 95, 223, 479, 991, 63, 575, + 127, 639, 383, 895, 255, 767, 511, 1023, + 14, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 27, 59, 7, 39, 23, 55, 30, 1, 17, 9, 25, 5, 0, 8, 4, 12, + 2, 10, 6, 21, 13, 29, 3, 19, 11, 15, 47, 31, 95, 63, 127, 255, + 767, 2815, 1791, 3839, 511, 2559, 1535, 3583, 1023, 3071, 2047, 4095, + } + s.cmd_code_ = [512]byte{ + 0xff, 0x77, 0xd5, 0xbf, 0xe7, 0xde, 0xea, 0x9e, 0x51, 0x5d, 0xde, 0xc6, + 0x70, 0x57, 0xbc, 0x58, 0x58, 0x58, 0xd8, 0xd8, 0x58, 0xd5, 0xcb, 0x8c, + 0xea, 0xe0, 0xc3, 0x87, 0x1f, 0x83, 0xc1, 0x60, 0x1c, 0x67, 0xb2, 0xaa, + 0x06, 0x83, 0xc1, 0x60, 0x30, 0x18, 0xcc, 0xa1, 0xce, 0x88, 0x54, 0x94, + 0x46, 0xe1, 0xb0, 0xd0, 0x4e, 0xb2, 0xf7, 0x04, 0x00, + } + s.cmd_code_numbits_ = 448 } s.is_initialized_ = true