hash.c

来自「一个类似windows」· C语言 代码 · 共 645 行 · 第 1/3 页

 0xCE, 0xCF, 0xD0, 0xD1, 0xD2, 0xD3, 0xD4, 0xD5, 0xD6, 0xD7, 0xD8, 0xD9, 0xDA,
 0xDB, 0x00, 0xDD, 0xDE, 0xDF, 0x41, 0xE1, 0x41, 0xE3, 0xE4, 0xE5, 0xE6, 0x43,
 0x45, 0x45, 0x45, 0x45, 0xEC, 0xEC, 0x49, 0x49, 0xF0, 0xF1, 0xF2, 0xF3, 0x4F,
 0xF5, 0xF6, 0xF7, 0xF8, 0x55, 0xFA, 0x55, 0x55, 0x00, 0x00, 0xFF,

 /* Mac */
 0x41, 0x81, 0x43, 0x45, 0x4E, 0x4F, 0x55, 0x41, 0x41, 0x41, 0x41, 0x8B, 0x8C,
 0x43, 0x45, 0x45, 0x45, 0x45, 0x49, 0x93, 0x49, 0x49, 0x4E, 0x4F, 0x98, 0x4F,
 0x4F, 0x9B, 0x55, 0x55, 0x55, 0x55, 0xA0, 0xA1, 0xA2, 0xA3, 0xA4, 0xA5, 0xA6,
 0xA7, 0xA8, 0xA9, 0xAA, 0xAB, 0xAC, 0xAD, 0xAE, 0xAF, 0xB0, 0xB1, 0xB2, 0xB3,
 0xB4, 0xB5, 0xB6, 0xB7, 0xB8, 0xB9, 0xBA, 0xBB, 0xBC, 0xBD, 0xBE, 0xBF, 0xC0,
 0xC1, 0xC2, 0xC1, 0xC1, 0xC1, 0xC1, 0xC7, 0xC8, 0xC9, 0xC9, 0xCB, 0xCC, 0xCD,
 0xCE, 0xCF, 0xD0, 0xD1, 0xD2, 0xD3, 0xD4, 0xD5, 0xD6, 0xD7, 0xD8, 0xD9, 0xDA,
 0xDB, 0xDC, 0xDD, 0xDE, 0xDF, 0x00, 0xE1, 0xE2, 0xE3, 0xE4, 0xE5, 0xE6, 0xE7,
 0xE8, 0xE9, 0xE9, 0xEB, 0xEC, 0xED, 0xEE, 0xEF, 0xF0, 0xF1, 0xF2, 0xF3, 0xF4,
 0xF5, 0xF6, 0xF7, 0xF8, 0xF9, 0xFA, 0xFB, 0xFC, 0xFD, 0xFE, 0xFF,
};

static const unsigned char Lookup_224[128 * 3] = {
 /* Common */
 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0A, 0x0B, 0x0C,
 0x0D, 0x0E, 0x0F, 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x19,
 0x1A, 0x1B, 0x1C, 0x1D, 0x1E, 0x1F, 0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26,
 0x27, 0x28, 0x29, 0x2A, 0x2B, 0x2C, 0x2D, 0x2E, 0x2F, 0x30, 0x31, 0x32, 0x33,
 0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x3A, 0x3B, 0x3C, 0x3D, 0x3E, 0x3F, 0x40,
 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48, 0x49, 0x4A, 0x4B, 0x4C, 0x4D,
 0x4E, 0x4F, 0x50, 0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57, 0x58, 0x59, 0x5A,
 0x5B, 0x5C, 0x5D, 0x5E, 0x5F, 0x60, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47,
 0x48, 0x49, 0x4A, 0x4B, 0x4C, 0x4D, 0x4E, 0x4F, 0x50, 0x51, 0x52, 0x53, 0x54,
 0x55, 0x56, 0x57, 0x58, 0x59, 0x5A, 0x7B, 0x7C, 0x7D, 0x7E, 0x7F,

/* Windows */
 0x80, 0x81, 0x82, 0x46, 0x84, 0x85, 0x86, 0x87, 0x5E, 0x89, 0x8A, 0x8B, 0x8C,
 0x8D, 0x8E, 0x8F, 0x90, 0x91, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97, 0x98, 0x99,
 0x9A, 0x9B, 0x9C, 0x9D, 0x9E, 0x9F, 0xA0, 0xA1, 0xA2, 0xA3, 0xA4, 0xA5, 0xA6,
 0xA7, 0xA8, 0xA9, 0xAA, 0xAB, 0xAC, 0xAD, 0xAE, 0xAF, 0xB0, 0xB1, 0x32, 0x33,
 0xB4, 0xB5, 0xB6, 0xB7, 0xB8, 0x31, 0xBA, 0xBB, 0xBC, 0xBD, 0xBE, 0xBF, 0xC0,
 0xC1, 0xC2, 0xC3, 0xC4, 0xC5, 0xC6, 0xC7, 0xC8, 0xC9, 0xCA, 0xCB, 0xCC, 0xCD,
 0xCE, 0xCF, 0xD0, 0xD1, 0xD2, 0xD3, 0xD4, 0xD5, 0xD6, 0xD7, 0xD8, 0xD9, 0xDA,
 0xDB, 0xDC, 0xDD, 0xDE, 0xDF, 0xE0, 0xE1, 0xE2, 0xE3, 0xE4, 0xE5, 0xE6, 0xE7,
 0xE8, 0xE9, 0xEA, 0xEA, 0xEC, 0xED, 0xED, 0xEF, 0xEF, 0xF1, 0xF2, 0xF3, 0xF3,
 0xF5, 0xF5, 0xF7, 0xF8, 0xF9, 0xFA, 0xFB, 0xFC, 0x00, 0x00, 0xFF,

 /* Mac */
 0x41, 0x41, 0x43, 0x45, 0x4E, 0x4F, 0x55, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
 0x43, 0x45, 0x45, 0x45, 0x45, 0x49, 0x49, 0x49, 0x49, 0x4E, 0x4F, 0x4F, 0x4F,
 0x4F, 0x4F, 0x55, 0x55, 0x55, 0x55, 0xA0, 0xA1, 0xA2, 0xA3, 0xA4, 0xA5, 0xA6,
 0xA7, 0xA8, 0xA9, 0xAA, 0xAB, 0xAC, 0xAD, 0xAE, 0xAF, 0xB0, 0xB1, 0xB2, 0xB3,
 0xB4, 0xB5, 0xB6, 0xB7, 0xB8, 0xB9, 0xBA, 0xBB, 0xBC, 0xBD, 0xBE, 0xBF, 0xC0,
 0xC1, 0xC2, 0xC3, 0xC4, 0xC5, 0xC6, 0xC7, 0xC8, 0xC9, 0xCA, 0xCB, 0xCC, 0xCD,
 0xCE, 0xCF, 0xD0, 0xD1, 0xD2, 0xD3, 0xD4, 0xD5, 0xD6, 0xD7, 0xD8, 0xD9, 0xDA,
 0xDB, 0xDC, 0xDD, 0xDE, 0xDF, 0xE0, 0xE1, 0xE2, 0xE3, 0xE4, 0xE5, 0xE6, 0xE7,
 0xE8, 0xE9, 0xEA, 0xEA, 0xEC, 0xED, 0xED, 0xEF, 0xEF, 0xF1, 0xF2, 0xF3, 0xF3,
 0xF5, 0xF5, 0xF7, 0xF8, 0xF9, 0xFA, 0xFB, 0xFC, 0xFD, 0xFE, 0xFF,
};

/***********************************************************************
 *		LHashValOfNameSysA (OLEAUT32.166)
 *
 * Produce a string hash value.
 *
 * PARAMS
 *  skind [I] Type of the system.
 *  lcid  [I] Locale id for the hash.
 *  lpStr [I] String to hash.
 *
 * RETURNS
 *  Success: The hash value of the string.
 *  Failure: 0, if lpStr is NULL.
 *
 * NOTES
 *  This function produces a two part hash: The high word is based on
 *  skind and lcid, while the low word is based on a repeated string
 *  hash of skind/str.
 */
ULONG WINAPI LHashValOfNameSysA( SYSKIND skind, LCID lcid, LPCSTR lpStr)
{
  ULONG nOffset, nMask = skind == SYS_MAC ? 1 : 0;
  ULONG nHiWord, nLoWord = 0x0deadbee;
  const unsigned char *str = (const unsigned char *)lpStr, *pnLookup = NULL;

  if (!str)
    return 0;

  lcid = ConvertDefaultLocale(lcid);

  switch (PRIMARYLANGID(LANGIDFROMLCID(lcid)))
  {
  default:
    ERR("Unknown lcid %lx, treating as latin-based, please report\n", lcid);
    /* .. Fall Through .. */
  case LANG_AFRIKAANS:  case LANG_ALBANIAN:   case LANG_ARMENIAN:
  case LANG_ASSAMESE:   case LANG_AZERI:      case LANG_BASQUE:
  case LANG_BELARUSIAN: case LANG_BENGALI:    case LANG_BULGARIAN:
  case LANG_CATALAN:    case LANG_DANISH:     case LANG_DIVEHI:
  case LANG_DUTCH:      case LANG_ENGLISH:    case LANG_ESTONIAN:
  case LANG_FAEROESE:   case LANG_FINNISH:    case LANG_FRENCH:
  case LANG_GALICIAN:   case LANG_GEORGIAN:   case LANG_GERMAN:
  case LANG_GUJARATI:   case LANG_HINDI:      case LANG_INDONESIAN:
  case LANG_ITALIAN:    case LANG_KANNADA:    case LANG_KASHMIRI:
  case LANG_KAZAK:      case LANG_KONKANI:    case LANG_KYRGYZ:
  case LANG_LATVIAN:    case LANG_LITHUANIAN: case LANG_MACEDONIAN:
  case LANG_MALAY:      case LANG_MALAYALAM:  case LANG_MANIPURI:
  case LANG_MARATHI:    case LANG_MONGOLIAN:  case LANG_NEPALI:
  case LANG_ORIYA:      case LANG_PORTUGUESE: case LANG_PUNJABI:
  case LANG_ROMANIAN:   case LANG_SANSKRIT:   case LANG_SERBIAN:
  case LANG_SINDHI:     case LANG_SLOVENIAN:  case LANG_SWAHILI:
  case LANG_SWEDISH:    case LANG_SYRIAC:     case LANG_TAMIL:
  case LANG_TATAR:      case LANG_TELUGU:     case LANG_THAI:
  case LANG_UKRAINIAN:  case LANG_URDU:       case LANG_UZBEK:
  case LANG_VIETNAMESE: case LANG_GAELIC:     case LANG_MALTESE:
  case LANG_MAORI:      case LANG_ROMANSH:    case LANG_IRISH:
  case LANG_SAMI:       case LANG_UPPER_SORBIAN: case LANG_SUTU:
  case LANG_TSONGA:     case LANG_TSWANA:     case LANG_VENDA:
  case LANG_XHOSA:      case LANG_ZULU:       case LANG_ESPERANTO:
  case LANG_WALON:      case LANG_CORNISH:    case LANG_WELSH:
  case LANG_BRETON:
    nOffset = 16;
    pnLookup = Lookup_16;
    break;
  case LANG_CZECH:  case LANG_HUNGARIAN:  case LANG_POLISH:
  case LANG_SLOVAK: case LANG_SPANISH:
    nOffset = 32;
    pnLookup = Lookup_32;
    break;
  case LANG_HEBREW:
    nOffset = 48;
    pnLookup = Lookup_48;
    break;
  case LANG_JAPANESE:
    nOffset = 64;
    pnLookup = Lookup_64;
    break;
  case LANG_KOREAN:
    nOffset = 80;
    pnLookup = Lookup_80;
    break;
  case LANG_CHINESE:
    nOffset = 112;
    pnLookup = Lookup_112;
    break;
  case LANG_GREEK:
    nOffset = 128;
    pnLookup = Lookup_128;
    break;
  case LANG_ICELANDIC:
    nOffset = 144;
    pnLookup = Lookup_144;
    break;
  case LANG_TURKISH:
    nOffset = 160;
    pnLookup = Lookup_160;
    break;
  case LANG_NORWEGIAN:
    if (SUBLANGID(LANGIDFROMLCID(lcid)) == SUBLANG_NORWEGIAN_NYNORSK)
    {
      nOffset = 176;
      pnLookup = Lookup_176;
    }
    else
    {
      nOffset = 16;
      pnLookup = Lookup_16;
    }
    break;
  case LANG_ARABIC:
  case LANG_FARSI:
    nOffset = 208;
    pnLookup = Lookup_208;
    break;
  case LANG_RUSSIAN:
    nOffset = 224;
    pnLookup = Lookup_224;
    break;
  }

  nHiWord = (nOffset | nMask) << 16;

  while (*str)
  {
    ULONG newLoWord = 0, i;

    /* Cumulative prime multiplication (*37) with modulo 2^32 wrap-around */
    for (i = 0; i < 37; i++)
      newLoWord += nLoWord;

    nLoWord = newLoWord + pnLookup[*str > 0x7f && nMask ? *str + 0x80 : *str];
    str++;
  }
  /* Constrain to a prime modulo and sizeof(WORD) */
  nLoWord = (nLoWord % 65599) & 0xffff;

  return nHiWord | nLoWord;
}

/***********************************************************************
 *		LHashValOfNameSys (OLEAUT32.165)
 *
 * See LHashValOfNameSysA.
 */
ULONG WINAPI LHashValOfNameSys(SYSKIND skind, LCID lcid, LPCOLESTR str)
{
    LPSTR	strA;
    ULONG	res;
    INT len;

    if (!str) return 0;
    len = WideCharToMultiByte( CP_ACP, 0, str, -1, NULL, 0, NULL, NULL );
    strA = HeapAlloc( GetProcessHeap(), 0, len );
    WideCharToMultiByte( CP_ACP, 0, str, -1, strA, len, NULL, NULL );
    res = LHashValOfNameSysA(skind, lcid, strA);
    HeapFree(GetProcessHeap(), 0, strA);
    return res;
}