gb2312.c

这是一个同样来自贝尔实验室的和UNIX有着渊源的操作系统, 其简洁的设计和实现易于我们学习和理解

#include <u.h>
#include <libc.h>
#include "kuten.h"

#define	NONE	0xffff

Rune tabgb2312[GB2312MAX] = {
  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,
  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,
  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,
  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,
  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,
  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,
  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,
  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,
  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,
  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,
  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,
  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,
  NONE,  NONE,  NONE,  NONE,  NONE,0x3000,0x3001,0x3002,
0x2024,0x02c9,0x02c7,0x00a8,0x3003,0x3005,0x2015,0x223c,
0x2225,0x2026,0x2018,0x2019,0x201c,0x201d,0x3014,0x3015,
0x3008,0x3009,0x300a,0x300b,0x300c,0x300d,0x300e,0x300f,
0x301a,0x301b,0x3010,0x3011,0x00b1,0x00d7,0x00f7,0x2236,
0x2227,0x2228,0x2211,0x220f,0x222a,0x2229,0x2208,0x2237,
0x221a,0x22a5,0x01c1,0x2220,0x2322,0x2299,0x222b,0x222e,
0x2261,0x224c,0x2248,0x223d,0x221d,0x2260,0x226e,0x226f,
0x2264,0x2265,0x221e,0x2235,0x2234,0x2642,0x2640,0x00b0,
0x2032,0x2033,0x2103,0x0024,0x00a4,0x00a2,0x00a3,0x2030,
0x00a7,0x2116,0x2606,0x2605,0x25cb,0x25cf,0x25ce,0x25c7,
0x25c6,0x25a1,0x25a0,0x25b3,0x25b2,0x203b,0x2192,0x2190,
0x2191,0x2193,0x3013,  NONE,  NONE,  NONE,  NONE,  NONE,
  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,
  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,
  NONE,0x2488,0x2489,0x248a,0x248b,0x248c,0x248d,0x248e,
0x248f,0x2490,0x2491,0x2492,0x2493,0x2494,0x2495,0x2496,
0x2497,0x2498,0x2499,0x249a,0x249b,0x2474,0x2475,0x2476,
0x2477,0x2478,0x2479,0x247a,0x247b,0x247c,0x247d,0x247e,
0x247f,0x2480,0x2481,0x2482,0x2483,0x2484,0x2485,0x2486,
0x2487,0x2460,0x2461,0x2462,0x2463,0x2464,0x2465,0x2466,
0x2467,0x2468,0x2469,  NONE,  NONE,0x3220,0x3221,0x3222,
0x3223,0x3224,0x3225,0x3226,0x3227,0x3228,0x3229,  NONE,
  NONE,0x2160,0x2161,0x2162,0x2163,0x2164,0x2165,0x2166,
0x2167,0x2168,0x2169,0x216a,0x216b,  NONE,  NONE,  NONE,
  NONE,  NONE,  NONE,  NONE,  NONE,0x0021,0x0022,0x0023,
0x00a5,0x0025,0x0026,0x0027,0x0028,0x0029,0x002a,0x002b,
0x002c,0x002d,0x002e,0x002f,0x0030,0x0031,0x0032,0x0033,
0x0034,0x0035,0x0036,0x0037,0x0038,0x0039,0x003a,0x003b,
0x003c,0x003d,0x003e,0x003f,0x0040,0x0041,0x0042,0x0043,
0x0044,0x0045,0x0046,0x0047,0x0048,0x0049,0x004a,0x004b,
0x004c,0x004d,0x004e,0x004f,0x0050,0x0051,0x0052,0x0053,
0x0054,0x0055,0x0056,0x0057,0x0058,0x0059,0x005a,0x005b,
0x005c,0x005d,0x005e,0x005f,0x0060,0x0061,0x0062,0x0063,
0x0064,0x0065,0x0066,0x0067,0x0068,0x0069,0x006a,0x006b,
0x006c,0x006d,0x006e,0x006f,0x0070,0x0071,0x0072,0x0073,
0x0074,0x0075,0x0076,0x0077,0x0078,0x0079,0x007a,0x007b,
0x007c,0x007d,0x00af,  NONE,  NONE,  NONE,  NONE,  NONE,
  NONE,0x3041,0x3042,0x3043,0x3044,0x3045,0x3046,0x3047,
0x3048,0x3049,0x304a,0x304b,0x304c,0x304d,0x304e,0x304f,
0x3050,0x3051,0x3052,0x3053,0x3054,0x3055,0x3056,0x3057,
0x3058,0x3059,0x305a,0x305b,0x305c,0x305d,0x305e,0x305f,
0x3060,0x3061,0x3062,0x3063,0x3064,0x3065,0x3066,0x3067,
0x3068,0x3069,0x306a,0x306b,0x306c,0x306d,0x306e,0x306f,
0x3070,0x3071,0x3072,0x3073,0x3074,0x3075,0x3076,0x3077,
0x3078,0x3079,0x307a,0x307b,0x307c,0x307d,0x307e,0x307f,
0x3080,0x3081,0x3082,0x3083,0x3084,0x3085,0x3086,0x3087,
0x3088,0x3089,0x308a,0x308b,0x308c,0x308d,0x308e,0x308f,
0x3090,0x3091,0x3092,0x3093,  NONE,  NONE,  NONE,  NONE,
  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,
  NONE,  NONE,  NONE,  NONE,  NONE,0x30a1,0x30a2,0x30a3,
0x30a4,0x30a5,0x30a6,0x30a7,0x30a8,0x30a9,0x30aa,0x30ab,
0x30ac,0x30ad,0x30ae,0x30af,0x30b0,0x30b1,0x30b2,0x30b3,
0x30b4,0x30b5,0x30b6,0x30b7,0x30b8,0x30b9,0x30ba,0x30bb,
0x30bc,0x30bd,0x30be,0x30bf,0x30c0,0x30c1,0x30c2,0x30c3,
0x30c4,0x30c5,0x30c6,0x30c7,0x30c8,0x30c9,0x30ca,0x30cb,
0x30cc,0x30cd,0x30ce,0x30cf,0x30d0,0x30d1,0x30d2,0x30d3,
0x30d4,0x30d5,0x30d6,0x30d7,0x30d8,0x30d9,0x30da,0x30db,
0x30dc,0x30dd,0x30de,0x30df,0x30e0,0x30e1,0x30e2,0x30e3,
0x30e4,0x30e5,0x30e6,0x30e7,0x30e8,0x30e9,0x30ea,0x30eb,
0x30ec,0x30ed,0x30ee,0x30ef,0x30f0,0x30f1,0x30f2,0x30f3,
0x30f4,0x30f5,0x30f6,  NONE,  NONE,  NONE,  NONE,  NONE,
  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,
  NONE,0x0391,0x0392,0x0393,0x0394,0x0395,0x0396,0x0397,
0x0398,0x0399,0x039a,0x039b,0x039c,0x039d,0x039e,0x039f,
0x03a0,0x03a1,0x03a3,0x03a4,0x03a5,0x03a6,0x03a7,0x03a8,
0x03a9,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,
  NONE,0x03b1,0x03b2,0x03b3,0x03b4,0x03b5,0x03b6,0x03b7,
0x03b8,0x03b9,0x03ba,0x03bb,0x03bc,0x03bd,0x03be,0x03bf,
0x03c0,0x03c1,0x03c3,0x03c4,0x03c5,0x03c6,0x03c7,0x03c8,
0x03c9,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,
  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,
  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,
  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,
  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,
  NONE,  NONE,  NONE,  NONE,  NONE,0x0410,0x0411,0x0412,
0x0413,0x0414,0x0415,0x0401,0x0416,0x0417,0x0418,0x0419,
0x041a,0x041b,0x041c,0x041d,0x041e,0x041f,0x0420,0x0421,
0x0422,0x0423,0x0424,0x0425,0x0426,0x0427,0x0428,0x0429,
0x042a,0x042b,0x042c,0x042d,0x042e,0x042f,  NONE,  NONE,
  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,
  NONE,  NONE,  NONE,  NONE,  NONE,0x0430,0x0431,0x0432,
0x0433,0x0434,0x0435,0x0451,0x0436,0x0437,0x0438,0x0439,
0x043a,0x043b,0x043c,0x043d,0x043e,0x043f,0x0440,0x0441,
0x0442,0x0443,0x0444,0x0445,0x0446,0x0447,0x0448,0x0449,
0x044a,0x044b,0x044c,0x044d,0x044e,0x044f,  NONE,  NONE,
  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,
  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,
  NONE,0x0101,0x00e1,0x0103,0x00e0,0x0113,0x00e9,0x0115,
0x00e8,0x012b,0x00ed,0x012d,0x00ec,0x014d,0x00f3,0x014f,
0x00f2,0x016b,0x00fa,0x016d,0x00f9,0x01d6,0x01d8,0x01da,
0x01dc,0x00fc,0x00ea,  NONE,  NONE,  NONE,  NONE,  NONE,
  NONE,  NONE,  NONE,  NONE,  NONE,0x3105,0x3106,0x3107,
0x3108,0x3109,0x310a,0x310b,0x310c,0x310d,0x310e,0x310f,
0x3110,0x3111,0x3112,0x3113,0x3114,0x3115,0x3116,0x3117,
0x3118,0x3119,0x311a,0x311b,0x311c,0x311d,0x311e,0x311f,
0x3120,0x3121,0x3122,0x3123,0x3124,0x3125,0x3126,0x3127,
0x3128,0x3129,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,
  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,
  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,
  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,
0x2500,0x2501,0x2502,0x2503,0x2504,0x2505,0x2506,0x2507,
0x2508,0x2509,0x250a,0x250b,0x250c,0x250d,0x250e,0x250f,
0x2510,0x2511,0x2512,0x2513,0x2514,0x2515,0x2516,0x2517,
0x2518,0x2519,0x251a,0x251b,0x251c,0x251d,0x251e,0x251f,
0x2520,0x2521,0x2522,0x2523,0x2524,0x2525,0x2526,0x2527,
0x2528,0x2529,0x252a,0x252b,0x252c,0x252d,0x252e,0x252f,
0x2530,0x2531,0x2532,0x2533,0x2534,0x2535,0x2536,0x2537,
0x2538,0x2539,0x253a,0x253b,0x253c,0x253d,0x253e,0x253f,
0x2540,0x2541,0x2542,0x2543,0x2544,0x2545,0x2546,0x2547,
0x2548,0x2549,0x254a,0x254b,  NONE,  NONE,  NONE,  NONE,
  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,
  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,
  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,
  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,
  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,
  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,
  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,
  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,
  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,
  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,
  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,
  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,
  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,
  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,
  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,
  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,
  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,
  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,
  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,
  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,
  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,
  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,
  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,
  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,
  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,
  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,
  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,
  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,
  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,
  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,
  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,
  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,
  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,
  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,
  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,
  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,
  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,
  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,
  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,
  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,
  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,
  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,
  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,
  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,
  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,
  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,
  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,
  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,
  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,
  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,
  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,
  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,
  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,
  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,
  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,
  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,
  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,
  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,
  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,
  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,
  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,
  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,
  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,
  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,
  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,
  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,
  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,
  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,
  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,
  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,
  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,
  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,
  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,
  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,
  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,
  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,
  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,  NONE,
  NONE,0x554a,0x963f,0x57c3,0x6328,0x54ce,0x5509,0x54c0,
0x7691,0x764c,0x853c,0x77ee,0x827e,0x788d,0x7231,0x9698,
0x978d,0x6c28,0x5b89,0x4ffa,0x6309,0x6697,0x5cb8,0x80fa,
0x6848,0x80ae,0x6602,0x76ce,0x51f9,0x6556,0x71ac,0x7ff1,
0x8884,0x50b2,0x5965,0x61ca,0x6fb3,0x82ad,0x634c,0x6252,
0x53ed,0x5427,0x7b06,0x516b,0x75a4,0x5df4,0x62d4,0x8dcb,
0x9776,0x628a,0x8019,0x575d,0x9738,0x7f62,0x7238,0x767d,
0x67cf,0x767e,0x6446,0x4f70,0x8d25,0x62dc,0x7a17,0x6591,
0x73ed,0x642c,0x6273,0x822c,0x9881,0x677f,0x7248,0x626e,
0x62cc,0x4f34,0x74e3,0x534a,0x529e,0x7eca,0x90a6,0x5e2e,
0x6886,0x699c,0x8180,0x7ed1,0x68d2,0x78c5,0x868c,0x9551,
0x508d,0x8c24,0x82de,0x80de,0x5305,0x8912,0x5265,  NONE,
  NONE,  NONE,  NONE,  NONE,  NONE,0x8584,0x96f9,0x4fdd,
0x5821,0x9971,0x5b9d,0x62b1,0x62a5,0x66b4,0x8c79,0x9c8d,
0x7206,0x676f,0x7891,0x60b2,0x5351,0x5317,0x8f88,0x80cc,