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AnselDecoder.cs
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AnselDecoder.cs
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using System.Collections.Generic;
namespace Ekmansoft.FamilyTree.Codec.Gedcom
{
class AnselDecoder
{
private Stack<char> diacritics;
private readonly ushort[] UnicodeAnsel_charMapping = new ushort[]
{
/* Fill any unused entries with the Unicode replacement character.
* Unicode allows us to substitute this character for any unknown
* character in another encoding that cannot be mapped to a known
* Unicode character */
/* 128-140 */
0xFFFD, 0xFFFD, 0xFFFD, 0xFFFD, 0xFFFD,
0xFFFD, 0xFFFD, 0xFFFD, 0xFFFD, 0xFFFD,
0xFFFD, 0xFFFD, 0xFFFD, /* ANSEL RESERVED */
/* 141 */ 8205, /* USMARC 8D Zero width Joiner */
/* 142 */ 8204, /* USMARC 8E Zero width Non-Joiner */
/* 143-160 */
0xFFFD, 0xFFFD, 0xFFFD, 0xFFFD, 0xFFFD,
0xFFFD, 0xFFFD, 0xFFFD, 0xFFFD, 0xFFFD,
0xFFFD, 0xFFFD, 0xFFFD, 0xFFFD, 0xFFFD,
0xFFFD, 0xFFFD, 0xFFFD, /* ANSEL RESERVED */
// ANSEL Spacing Graphic Characters
/* [161] */ 321, /* A1 */
/* [162] */ 216, /* A2 */
/* [163] */ 208, /* A3 */
/* [164] */ 222, /* A4 */
/* [165] */ 198, /* A5 */
/* [166] */ 338, /* A6 */
/* [167] */ 697, /* A7 */
/* [168] */ 183, /* A8 */
/* [169] */ 9837, /* A9 */
/* [170] */ 174, /* AA */
/* [171] */ 177, /* AB */
/* [172] */ 416, /* AC */
/* [173] */ 431, /* AD */
/* [174] */ 702, /* AE */
/* [175] */ 0xFFFD, /* ANSEL RESERVED */
/* [176] */ 703, /* B0 */
/* [177] */ 322, /* B1 */
/* [178] */ 248, /* B2 */
/* [179] */ 273, /* B3 */
/* [180] */ 254, /* B4 */
/* [181] */ 230, /* B5 */
/* [182] */ 339, /* B6 */
/* [183] */ 698, /* B7 */
/* [184] */ 305, /* B8 */
/* [185] */ 163, /* B9 */
/* [186] */ 240, /* BA */
/* [187] */ 0xFFFD, /* ANSEL RESERVED */
/* [188] */ 417, /* BC */
/* [189] */ 432, /* BD */
/* [190] */ 0xFFFD, /* ANSEL RESERVED */
/* [191] */ 0xFFFD, /* ANSEL RESERVED */
/* [192] */ 176, /* C0 */
/* [193] */ 8467, /* C1 */
/* [194] */ 8471, /* C2 */
/* [195] */ 169, /* C3 */
/* [196] */ 9839, /* C4 */
/* [197] */ 191, /* C5 */
/* [198] */ 161, /* C6 */
/* 199-206 */
0xFFFD, 0xFFFD, 0xFFFD, 0xFFFD, 0xFFFD,
0xFFFD, 0xFFFD, 0xFFFD, /* ANSEL RESERVED */
// GEDCOM extension to ANSEL
/* [207] */ 223, /* CF */
/* 208-223 */
0xFFFD, 0xFFFD, 0xFFFD, 0xFFFD, 0xFFFD,
0xFFFD, 0xFFFD, 0xFFFD, 0xFFFD, 0xFFFD,
0xFFFD, 0xFFFD, 0xFFFD, 0xFFFD, 0xFFFD,
0xFFFD, /* ANSEL RESERVED */
// ANSEL Non-spacing Graphic Characters
/* [224] */ 777, /* E0 */
/* [225] */ 768, /* E1 */
/* [226] */ 769, /* E2 */
/* [227] */ 770, /* E3 */
/* [228] */ 771, /* E4 */
/* [229] */ 772, /* E5 */
/* [230] */ 774, /* E6 */
/* [231] */ 775, /* E7 */
/* [232] */ 776, /* E8 */
/* [233] */ 780, /* E9 */
/* [234] */ 778, /* EA */
/* [235] */ 65056, /* EB */
/* [236] */ 65057, /* EC */
/* [237] */ 789, /* ED */
/* [238] */ 779, /* EE */
/* [239] */ 784, /* EF */
/* [240] */ 807, /* F0 */
/* [241] */ 808, /* F1 */
/* [242] */ 803, /* F2 */
/* [243] */ 804, /* F3 */
/* [244] */ 805, /* F4 */
/* [245] */ 819, /* F5 */
/* [246] */ 818, /* F6 */
/* [247] */ 806, /* F7 */
/* [248] */ 796, /* F8 */
/* [249] */ 814, /* F9 */
/* [250] */ 65058, /* FA */
/* [251] */ 65059, /* FB */
/* [252] */ 0xFFFD, /* ANSEL RESERVED */
/* [253] */ 0xFFFD, /* ANSEL RESERVED */
/* [254] */ 787, /* FE */
/* [255] */ 0xFFFD, /* ANSEL RESERVED */
};
public AnselDecoder()
{
diacritics = new Stack<char>();
}
public ushort DecodeChar(char ch)
{
if (ch < 128)
{
return (ushort)ch;
}
return UnicodeAnsel_charMapping[ch - 128];
}
public string DecodeString(string anselStr)
{
string str2 = "";
for (int i = 0; i < anselStr.Length; i++)
{
char outChar;
outChar = (char)DecodeChar(anselStr[i]);
if (anselStr[i] < 0xE0)
{
str2 += outChar;
while (diacritics.Count > 0)
{
str2 += diacritics.Pop();
}
}
else
{
diacritics.Push(outChar);
}
}
return str2;
}
}
}