|
|
- var utils = require('./utils');
-
- var table = `
- ( 0) |11111111|11000 1ff8 [13]
- ( 1) |11111111|11111111|1011000 7fffd8 [23]
- ( 2) |11111111|11111111|11111110|0010 fffffe2 [28]
- ( 3) |11111111|11111111|11111110|0011 fffffe3 [28]
- ( 4) |11111111|11111111|11111110|0100 fffffe4 [28]
- ( 5) |11111111|11111111|11111110|0101 fffffe5 [28]
- ( 6) |11111111|11111111|11111110|0110 fffffe6 [28]
- ( 7) |11111111|11111111|11111110|0111 fffffe7 [28]
- ( 8) |11111111|11111111|11111110|1000 fffffe8 [28]
- ( 9) |11111111|11111111|11101010 ffffea [24]
- ( 10) |11111111|11111111|11111111|111100 3ffffffc [30]
- ( 11) |11111111|11111111|11111110|1001 fffffe9 [28]
- ( 12) |11111111|11111111|11111110|1010 fffffea [28]
- ( 13) |11111111|11111111|11111111|111101 3ffffffd [30]
- ( 14) |11111111|11111111|11111110|1011 fffffeb [28]
- ( 15) |11111111|11111111|11111110|1100 fffffec [28]
- ( 16) |11111111|11111111|11111110|1101 fffffed [28]
- ( 17) |11111111|11111111|11111110|1110 fffffee [28]
- ( 18) |11111111|11111111|11111110|1111 fffffef [28]
- ( 19) |11111111|11111111|11111111|0000 ffffff0 [28]
- ( 20) |11111111|11111111|11111111|0001 ffffff1 [28]
- ( 21) |11111111|11111111|11111111|0010 ffffff2 [28]
- ( 22) |11111111|11111111|11111111|111110 3ffffffe [30]
- ( 23) |11111111|11111111|11111111|0011 ffffff3 [28]
- ( 24) |11111111|11111111|11111111|0100 ffffff4 [28]
- ( 25) |11111111|11111111|11111111|0101 ffffff5 [28]
- ( 26) |11111111|11111111|11111111|0110 ffffff6 [28]
- ( 27) |11111111|11111111|11111111|0111 ffffff7 [28]
- ( 28) |11111111|11111111|11111111|1000 ffffff8 [28]
- ( 29) |11111111|11111111|11111111|1001 ffffff9 [28]
- ( 30) |11111111|11111111|11111111|1010 ffffffa [28]
- ( 31) |11111111|11111111|11111111|1011 ffffffb [28]
- ' ' ( 32) |010100 14 [ 6]
- '!' ( 33) |11111110|00 3f8 [10]
- '"' ( 34) |11111110|01 3f9 [10]
- '#' ( 35) |11111111|1010 ffa [12]
- '$' ( 36) |11111111|11001 1ff9 [13]
- '%' ( 37) |010101 15 [ 6]
- '&' ( 38) |11111000 f8 [ 8]
- ''' ( 39) |11111111|010 7fa [11]
- '(' ( 40) |11111110|10 3fa [10]
- ')' ( 41) |11111110|11 3fb [10]
- '*' ( 42) |11111001 f9 [ 8]
- '+' ( 43) |11111111|011 7fb [11]
- ',' ( 44) |11111010 fa [ 8]
- '-' ( 45) |010110 16 [ 6]
- '.' ( 46) |010111 17 [ 6]
- '/' ( 47) |011000 18 [ 6]
- '0' ( 48) |00000 0 [ 5]
- '1' ( 49) |00001 1 [ 5]
- '2' ( 50) |00010 2 [ 5]
- '3' ( 51) |011001 19 [ 6]
- '4' ( 52) |011010 1a [ 6]
- '5' ( 53) |011011 1b [ 6]
- '6' ( 54) |011100 1c [ 6]
- '7' ( 55) |011101 1d [ 6]
- '8' ( 56) |011110 1e [ 6]
- '9' ( 57) |011111 1f [ 6]
- ':' ( 58) |1011100 5c [ 7]
- ';' ( 59) |11111011 fb [ 8]
- '<' ( 60) |11111111|1111100 7ffc [15]
- '=' ( 61) |100000 20 [ 6]
- '>' ( 62) |11111111|1011 ffb [12]
- '?' ( 63) |11111111|00 3fc [10]
- '@' ( 64) |11111111|11010 1ffa [13]
- 'A' ( 65) |100001 21 [ 6]
- 'B' ( 66) |1011101 5d [ 7]
- 'C' ( 67) |1011110 5e [ 7]
- 'D' ( 68) |1011111 5f [ 7]
- 'E' ( 69) |1100000 60 [ 7]
- 'F' ( 70) |1100001 61 [ 7]
- 'G' ( 71) |1100010 62 [ 7]
- 'H' ( 72) |1100011 63 [ 7]
- 'I' ( 73) |1100100 64 [ 7]
- 'J' ( 74) |1100101 65 [ 7]
- 'K' ( 75) |1100110 66 [ 7]
- 'L' ( 76) |1100111 67 [ 7]
- 'M' ( 77) |1101000 68 [ 7]
- 'N' ( 78) |1101001 69 [ 7]
- 'O' ( 79) |1101010 6a [ 7]
- 'P' ( 80) |1101011 6b [ 7]
- 'Q' ( 81) |1101100 6c [ 7]
- 'R' ( 82) |1101101 6d [ 7]
- 'S' ( 83) |1101110 6e [ 7]
- 'T' ( 84) |1101111 6f [ 7]
- 'U' ( 85) |1110000 70 [ 7]
- 'V' ( 86) |1110001 71 [ 7]
- 'W' ( 87) |1110010 72 [ 7]
- 'X' ( 88) |11111100 fc [ 8]
- 'Y' ( 89) |1110011 73 [ 7]
- 'Z' ( 90) |11111101 fd [ 8]
- '[' ( 91) |11111111|11011 1ffb [13]
- '\\' ( 92) |11111111|11111110|000 7fff0 [19]
- ']' ( 93) |11111111|11100 1ffc [13]
- '^' ( 94) |11111111|111100 3ffc [14]
- '_' ( 95) |100010 22 [ 6]
- '\`' ( 96) |11111111|1111101 7ffd [15]
- 'a' ( 97) |00011 3 [ 5]
- 'b' ( 98) |100011 23 [ 6]
- 'c' ( 99) |00100 4 [ 5]
- 'd' (100) |100100 24 [ 6]
- 'e' (101) |00101 5 [ 5]
- 'f' (102) |100101 25 [ 6]
- 'g' (103) |100110 26 [ 6]
- 'h' (104) |100111 27 [ 6]
- 'i' (105) |00110 6 [ 5]
- 'j' (106) |1110100 74 [ 7]
- 'k' (107) |1110101 75 [ 7]
- 'l' (108) |101000 28 [ 6]
- 'm' (109) |101001 29 [ 6]
- 'n' (110) |101010 2a [ 6]
- 'o' (111) |00111 7 [ 5]
- 'p' (112) |101011 2b [ 6]
- 'q' (113) |1110110 76 [ 7]
- 'r' (114) |101100 2c [ 6]
- 's' (115) |01000 8 [ 5]
- 't' (116) |01001 9 [ 5]
- 'u' (117) |101101 2d [ 6]
- 'v' (118) |1110111 77 [ 7]
- 'w' (119) |1111000 78 [ 7]
- 'x' (120) |1111001 79 [ 7]
- 'y' (121) |1111010 7a [ 7]
- 'z' (122) |1111011 7b [ 7]
- '{' (123) |11111111|1111110 7ffe [15]
- '|' (124) |11111111|100 7fc [11]
- '}' (125) |11111111|111101 3ffd [14]
- '~' (126) |11111111|11101 1ffd [13]
- (127) |11111111|11111111|11111111|1100 ffffffc [28]
- (128) |11111111|11111110|0110 fffe6 [20]
- (129) |11111111|11111111|010010 3fffd2 [22]
- (130) |11111111|11111110|0111 fffe7 [20]
- (131) |11111111|11111110|1000 fffe8 [20]
- (132) |11111111|11111111|010011 3fffd3 [22]
- (133) |11111111|11111111|010100 3fffd4 [22]
- (134) |11111111|11111111|010101 3fffd5 [22]
- (135) |11111111|11111111|1011001 7fffd9 [23]
- (136) |11111111|11111111|010110 3fffd6 [22]
- (137) |11111111|11111111|1011010 7fffda [23]
- (138) |11111111|11111111|1011011 7fffdb [23]
- (139) |11111111|11111111|1011100 7fffdc [23]
- (140) |11111111|11111111|1011101 7fffdd [23]
- (141) |11111111|11111111|1011110 7fffde [23]
- (142) |11111111|11111111|11101011 ffffeb [24]
- (143) |11111111|11111111|1011111 7fffdf [23]
- (144) |11111111|11111111|11101100 ffffec [24]
- (145) |11111111|11111111|11101101 ffffed [24]
- (146) |11111111|11111111|010111 3fffd7 [22]
- (147) |11111111|11111111|1100000 7fffe0 [23]
- (148) |11111111|11111111|11101110 ffffee [24]
- (149) |11111111|11111111|1100001 7fffe1 [23]
- (150) |11111111|11111111|1100010 7fffe2 [23]
- (151) |11111111|11111111|1100011 7fffe3 [23]
- (152) |11111111|11111111|1100100 7fffe4 [23]
- (153) |11111111|11111110|11100 1fffdc [21]
- (154) |11111111|11111111|011000 3fffd8 [22]
- (155) |11111111|11111111|1100101 7fffe5 [23]
- (156) |11111111|11111111|011001 3fffd9 [22]
- (157) |11111111|11111111|1100110 7fffe6 [23]
- (158) |11111111|11111111|1100111 7fffe7 [23]
- (159) |11111111|11111111|11101111 ffffef [24]
- (160) |11111111|11111111|011010 3fffda [22]
- (161) |11111111|11111110|11101 1fffdd [21]
- (162) |11111111|11111110|1001 fffe9 [20]
- (163) |11111111|11111111|011011 3fffdb [22]
- (164) |11111111|11111111|011100 3fffdc [22]
- (165) |11111111|11111111|1101000 7fffe8 [23]
- (166) |11111111|11111111|1101001 7fffe9 [23]
- (167) |11111111|11111110|11110 1fffde [21]
- (168) |11111111|11111111|1101010 7fffea [23]
- (169) |11111111|11111111|011101 3fffdd [22]
- (170) |11111111|11111111|011110 3fffde [22]
- (171) |11111111|11111111|11110000 fffff0 [24]
- (172) |11111111|11111110|11111 1fffdf [21]
- (173) |11111111|11111111|011111 3fffdf [22]
- (174) |11111111|11111111|1101011 7fffeb [23]
- (175) |11111111|11111111|1101100 7fffec [23]
- (176) |11111111|11111111|00000 1fffe0 [21]
- (177) |11111111|11111111|00001 1fffe1 [21]
- (178) |11111111|11111111|100000 3fffe0 [22]
- (179) |11111111|11111111|00010 1fffe2 [21]
- (180) |11111111|11111111|1101101 7fffed [23]
- (181) |11111111|11111111|100001 3fffe1 [22]
- (182) |11111111|11111111|1101110 7fffee [23]
- (183) |11111111|11111111|1101111 7fffef [23]
- (184) |11111111|11111110|1010 fffea [20]
- (185) |11111111|11111111|100010 3fffe2 [22]
- (186) |11111111|11111111|100011 3fffe3 [22]
- (187) |11111111|11111111|100100 3fffe4 [22]
- (188) |11111111|11111111|1110000 7ffff0 [23]
- (189) |11111111|11111111|100101 3fffe5 [22]
- (190) |11111111|11111111|100110 3fffe6 [22]
- (191) |11111111|11111111|1110001 7ffff1 [23]
- (192) |11111111|11111111|11111000|00 3ffffe0 [26]
- (193) |11111111|11111111|11111000|01 3ffffe1 [26]
- (194) |11111111|11111110|1011 fffeb [20]
- (195) |11111111|11111110|001 7fff1 [19]
- (196) |11111111|11111111|100111 3fffe7 [22]
- (197) |11111111|11111111|1110010 7ffff2 [23]
- (198) |11111111|11111111|101000 3fffe8 [22]
- (199) |11111111|11111111|11110110|0 1ffffec [25]
- (200) |11111111|11111111|11111000|10 3ffffe2 [26]
- (201) |11111111|11111111|11111000|11 3ffffe3 [26]
- (202) |11111111|11111111|11111001|00 3ffffe4 [26]
- (203) |11111111|11111111|11111011|110 7ffffde [27]
- (204) |11111111|11111111|11111011|111 7ffffdf [27]
- (205) |11111111|11111111|11111001|01 3ffffe5 [26]
- (206) |11111111|11111111|11110001 fffff1 [24]
- (207) |11111111|11111111|11110110|1 1ffffed [25]
- (208) |11111111|11111110|010 7fff2 [19]
- (209) |11111111|11111111|00011 1fffe3 [21]
- (210) |11111111|11111111|11111001|10 3ffffe6 [26]
- (211) |11111111|11111111|11111100|000 7ffffe0 [27]
- (212) |11111111|11111111|11111100|001 7ffffe1 [27]
- (213) |11111111|11111111|11111001|11 3ffffe7 [26]
- (214) |11111111|11111111|11111100|010 7ffffe2 [27]
- (215) |11111111|11111111|11110010 fffff2 [24]
- (216) |11111111|11111111|00100 1fffe4 [21]
- (217) |11111111|11111111|00101 1fffe5 [21]
- (218) |11111111|11111111|11111010|00 3ffffe8 [26]
- (219) |11111111|11111111|11111010|01 3ffffe9 [26]
- (220) |11111111|11111111|11111111|1101 ffffffd [28]
- (221) |11111111|11111111|11111100|011 7ffffe3 [27]
- (222) |11111111|11111111|11111100|100 7ffffe4 [27]
- (223) |11111111|11111111|11111100|101 7ffffe5 [27]
- (224) |11111111|11111110|1100 fffec [20]
- (225) |11111111|11111111|11110011 fffff3 [24]
- (226) |11111111|11111110|1101 fffed [20]
- (227) |11111111|11111111|00110 1fffe6 [21]
- (228) |11111111|11111111|101001 3fffe9 [22]
- (229) |11111111|11111111|00111 1fffe7 [21]
- (230) |11111111|11111111|01000 1fffe8 [21]
- (231) |11111111|11111111|1110011 7ffff3 [23]
- (232) |11111111|11111111|101010 3fffea [22]
- (233) |11111111|11111111|101011 3fffeb [22]
- (234) |11111111|11111111|11110111|0 1ffffee [25]
- (235) |11111111|11111111|11110111|1 1ffffef [25]
- (236) |11111111|11111111|11110100 fffff4 [24]
- (237) |11111111|11111111|11110101 fffff5 [24]
- (238) |11111111|11111111|11111010|10 3ffffea [26]
- (239) |11111111|11111111|1110100 7ffff4 [23]
- (240) |11111111|11111111|11111010|11 3ffffeb [26]
- (241) |11111111|11111111|11111100|110 7ffffe6 [27]
- (242) |11111111|11111111|11111011|00 3ffffec [26]
- (243) |11111111|11111111|11111011|01 3ffffed [26]
- (244) |11111111|11111111|11111100|111 7ffffe7 [27]
- (245) |11111111|11111111|11111101|000 7ffffe8 [27]
- (246) |11111111|11111111|11111101|001 7ffffe9 [27]
- (247) |11111111|11111111|11111101|010 7ffffea [27]
- (248) |11111111|11111111|11111101|011 7ffffeb [27]
- (249) |11111111|11111111|11111111|1110 ffffffe [28]
- (250) |11111111|11111111|11111101|100 7ffffec [27]
- (251) |11111111|11111111|11111101|101 7ffffed [27]
- (252) |11111111|11111111|11111101|110 7ffffee [27]
- (253) |11111111|11111111|11111101|111 7ffffef [27]
- (254) |11111111|11111111|11111110|000 7fffff0 [27]
- (255) |11111111|11111111|11111011|10 3ffffee [26]
- EOS (256) |11111111|11111111|11111111|111111 3fffffff [30]
- `;
-
- table = table.split('\n').filter(function(line) {
- return line.length > 0;
- });
-
- function createNode() {
- // See `encodeBits`
- var arr = new Array(256);
- for (var i = 0; i < arr.length; i++)
- arr[i] = 0;
- return arr;
- }
-
- var decode = createNode();
- var encode = createNode();
-
- function encodeBits(bits) {
- var num = parseInt(bits, 2);
-
- return num;
- }
-
- table.forEach(function(line) {
- var match = line.match(/\(\s*([\d]+)\)\s+\|([^\s]+)\s+([^\s]+)/);
- var octet = match[1] | 0;
- var bits = match[2].split(/\|/g);
- var hex = parseInt(match[3], 16);
-
- var node = decode;
- var totalLen = 0;
- for (var i = 0; i < bits.length - 1; i++) {
- var b = encodeBits(bits[i]);
- totalLen += bits[i].length;
- if (node[b] === 0)
- node[b] = createNode();
- node = node[b];
- }
- totalLen += bits[i].length;
- node[encodeBits(bits[i])] = (bits[i].length << 9) | octet;
- encode[octet] = [ totalLen, hex ];
- });
-
- // Wrap lines after 79 chars
- out = 'exports.decode =\n' + utils.wrap(JSON.stringify(decode)) + ';';
- console.log(out);
-
- out = 'exports.encode =\n' + utils.wrap(JSON.stringify(encode)) + ';';
- console.log(out);
|