GoldenCrystal
56 lines
1.6 KiB
C#
56 lines
1.6 KiB
C#
namespace System.Unicode
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{
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internal static class HangulInfo
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{
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// Constants defined on page 144 of the Unicode 7.0 Standard (3.12)
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private const ushort SBase = 0xAC00;
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private const ushort LBase = 0x1100;
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private const ushort VBase = 0x1161;
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private const ushort TBase = 0x11A7;
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private const int LCount = 19;
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private const int VCount = 21;
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private const int TCount = 28;
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private const int NCount = VCount * TCount;
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private const int SCount = LCount * NCount;
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private static readonly string[] JamoLTable =
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{
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"G", "GG", "N", "D", "DD", "R", "M", "B", "BB",
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"S", "SS", "", "J", "JJ", "C", "K", "T", "P", "H"
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};
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private static readonly string[] JamoVTable =
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{
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"A", "AE", "YA", "YAE", "EO", "E", "YEO", "YE", "O",
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"WA", "WAE", "OE", "YO", "U", "WEO", "WE", "WI",
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"YU", "EU", "YI", "I"
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};
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private static readonly string[] JamoTTable =
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{
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"", "G", "GG", "GS", "N", "NJ", "NH", "D", "L", "LG", "LM",
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"LB", "LS", "LT", "LP", "LH", "M", "B", "BS",
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"S", "SS", "NG", "J", "C", "K", "T", "P", "H"
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};
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// Algorithm defined on page 150 of the Unicode 7.0 Standard (3.12)
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internal static string GetHangulName(char codePoint)
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{
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int sIndex = codePoint - SBase;
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if (sIndex < 0 || sIndex >= SCount) throw new ArgumentOutOfRangeException(nameof(codePoint));
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int lIndex = sIndex / NCount;
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int vIndex = (sIndex % NCount) / TCount;
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int tIndex = sIndex % TCount;
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return "HANGUL SYLLABLE " + JamoLTable[lIndex] + JamoVTable[vIndex] + JamoTTable[tIndex];
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}
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internal static bool IsHangul(int codePoint)
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{
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return codePoint >= SBase && codePoint < SBase + SCount;
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}
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}
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}
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