uhc_2.h

libiconv是一个很不错的字符集转换库。程序接口也很简单

  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,
  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, 0xe0, 0xe1, 0xe2, 0xe3, 0xe4, 0xe5,
  0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
  0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f,
  0x10, 0x11, 0x12, 0x13, 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, 0xda, 0xdb, 0xdc, 0xdd,
  0xde, 0xdf, 0xe0, 0xe1, 0xe2, 0xe3, 0xe4, 0xe5,
  0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
  0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 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,
  0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x3a, 0x3b,
  0x3c, 0x3d, 0x3e, 0x3f, 0x40, 0x41, 0x42, 0x43,
  0x44, 0x45, 0x46, 0x47, 0x48, 0x49, 0x4a, 0x4b,
  0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
  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, 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, 0xe8, 0xe9, 0xea, 0xeb,
  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, 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, 0xdc, 0xdd,
  0xde, 0xdf, 0xe0, 0xe1, 0xe2, 0xe3, 0xe4, 0xe5,
  0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
  0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f,
  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,
  0xd6, 0xd7, 0xd8, 0xd9, 0xda, 0xdb, 0xdc, 0xdd,
  0xde, 0xdf, 0xe0, 0xe1, 0xe2, 0xe3, 0xe4, 0xe5,
  0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
  0x08, 0x09, 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, 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,
  0x00, 0x01, 0x02, 0x03, 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, 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,
  0xe4, 0xe5, 0xe6, 0xe7, 0xe8, 0xe9, 0xea, 0xeb,
  0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
  0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f,
  0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17,
  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, 0xd8, 0xd9, 0xda, 0xdb, 0xdc, 0xdd,
  0xde, 0xdf, 0xe0, 0xe1, 0xe2, 0xe3, 0xe4, 0xe5,
  0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
  0x08, 0x09, 0x0a, 0x0b, 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, 0xd2, 0xd3, 0xd4, 0xd5,
  0xd6, 0xd7, 0xd8, 0xd9, 0xda, 0xdb, 0xdc, 0xdd,
  0xde, 0xdf, 0xe0, 0xe1, 0xe2, 0xe3, 0xe4, 0xe5,
  0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 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,
  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,
  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, 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, 0x40, 0x41, 0x42, 0x43,
  0x44, 0x45, 0x46, 0x47, 0x48, 0x49, 0x4a, 0x4b,
  0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
  0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f,
  0x10, 0x11, 0x12, 0x13, 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, 0xd4, 0xd5,
  0xd6, 0xd7, 0xd8, 0xd9, 0xda, 0xdb, 0xdc, 0xdd,
  0xde, 0xdf, 0xe0, 0xe1, 0xe2, 0xe3, 0xe4, 0xe5,
  0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
  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,
  0xce, 0xcf, 0xd0, 0xd1, 0xd2, 0xd3, 0xd4, 0xd5,
  0xd6, 0xd7, 0xd8, 0xd9, 0xda, 0xdb, 0xdc, 0xdd,
  0xde, 0xdf, 0xe0, 0xe1, 0xe2, 0xe3, 0xe4, 0xe5,
  0x00, 0x01, 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, 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, 0xe8, 0xe9, 0xea, 0xeb,
  0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
  0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f,
  0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 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,
  0x3c, 0x3d, 0x3e, 0x3f, 0x40, 0x41, 0x42, 0x43,
  0x44, 0x45, 0x46, 0x47, 0x48, 0x49, 0x4a, 0x4b,
  0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
  0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f,
  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, 0xd0, 0xd1, 0xd2, 0xd3, 0xd4, 0xd5,
  0xd6, 0xd7, 0xd8, 0xd9, 0xda, 0xdb, 0xdc, 0xdd,
  0xde, 0xdf, 0xe0, 0xe1, 0xe2, 0xe3, 0xe4, 0xe5,
  0x00, 0x01, 0x02, 0x03, 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, 0xca, 0xcb, 0xcc, 0xcd,
  0xce, 0xcf, 0xd0, 0xd1, 0xd2, 0xd3, 0xd4, 0xd5,
  0xd6, 0xd7, 0xd8, 0xd9, 0xda, 0xdb,
};

static const Summary16 uhc_2_uni2indx_pagec8[251] = {
  /* 0xc800 */
  {    0, 0x0000 }, {    0, 0x0000 }, {    0, 0x0000 }, {    0, 0x0000 },
  {    0, 0x0000 }, {    0, 0x0000 }, {    0, 0x0000 }, {    0, 0x0000 },
  {    0, 0x0000 }, {    0, 0x0000 }, {    0, 0xfee0 }, {   10, 0xcfff },
  {   24, 0xeeef }, {   37, 0xfd4f }, {   49, 0xffec }, {   62, 0xcfdf },
  /* 0xc900 */
  {   75, 0x4f8e }, {   84, 0xfefd }, {   98, 0xefff }, {  113, 0xffef },
  {  128, 0xffff }, {  144, 0xfeec }, {  156, 0xeff4 }, {  168, 0xefee },
  {  181, 0xecff }, {  194, 0xd4fe }, {  205, 0xffff }, {  221, 0xffff },
  {  237, 0xfa6c }, {  247, 0xc994 }, {  254, 0x4f6a }, {  263, 0xecfc },
  /* 0xca00 */
  {  274, 0xc4fe }, {  284, 0xfeef }, {  298, 0xfdff }, {  313, 0xffff },
  {  329, 0xcfff }, {  343, 0x4fee }, {  354, 0xfefc }, {  367, 0xdfff },
  {  382, 0xffef }, {  397, 0xfeff }, {  412, 0xffff }, {  428, 0xcfff },
  {  442, 0x4fee }, {  453, 0xfcf5 }, {  465, 0xeffe }, {  479, 0xffef },
  /* 0xcb00 */
  {  494, 0xfeff }, {  509, 0xfeee }, {  522, 0xfffc }, {  536, 0xffff },
  {  552, 0xecfd }, {  564, 0xdcfe }, {  576, 0xffef }, {  591, 0xfcff },
  {  605, 0xffff }, {  621, 0xefff }, {  636, 0xffff }, {  652, 0xfeff },
  {  667, 0xffff }, {  683, 0xffef }, {  698, 0xfd6f }, {  711, 0xffff },
  /* 0xcc00 */
  {  727, 0xcfff }, {  741, 0xcfee }, {  753, 0xac79 }, {  762, 0x84fe },
  {  771, 0xeecf }, {  783, 0xfc4f }, {  794, 0xfeae }, {  806, 0xffde },
  {  820, 0xffff }, {  836, 0xecff }, {  849, 0xc4fe }, {  859, 0xeecf },
  {  871, 0xfd4f }, {  883, 0xffee }, {  897, 0xefef }, {  911, 0xfffe },
  /* 0xcd00 */
  {  926, 0xecfd }, {  938, 0xd4fe }, {  949, 0xeeef }, {  962, 0xfdff },
  {  977, 0xffff }, {  993, 0xefff }, { 1008, 0x4fee }, { 1019, 0xfefd },
  { 1033, 0xfeff }, { 1048, 0xeecf }, { 1060, 0xfd4f }, { 1072, 0xfffe },
  { 1087, 0xefef }, { 1101, 0xfffe }, { 1116, 0xeeff }, { 1130, 0xd4fe },
  /* 0xce00 */
  { 1141, 0xeeef }, { 1154, 0xfdef }, { 1168, 0xfeec }, { 1180, 0xffd4 },
  { 1192, 0xffff }, { 1208, 0x6cff }, { 1220, 0xd4fc }, { 1230, 0xeecf },
  { 1242, 0xfd4f }, { 1254, 0xfeec }, { 1266, 0xcfc4 }, { 1275, 0xffff },
  { 1291, 0xfffd }, { 1306, 0xffff }, { 1322, 0xe6cf }, { 1333, 0xfc4f },
  /* 0xcf00 */
  { 1344, 0xfeec }, { 1356, 0xefd4 }, { 1367, 0x4fee }, { 1378, 0xfefc },
  { 1391, 0xffff }, { 1407, 0xeecf }, { 1419, 0xfd4f }, { 1431, 0xfeec },
  { 1443, 0xefde }, { 1456, 0xffff }, { 1472, 0xfefd }, { 1486, 0xfffe },
  { 1501, 0xffef }, { 1516, 0xffff }, { 1532, 0xfeec }, { 1544, 0xefd4 },
  /* 0xd000 */
  { 1555, 0xffee }, { 1569, 0xfefd }, { 1583, 0xdfff }, { 1598, 0xeecf },
  { 1610, 0xfd4f }, { 1622, 0xfeee }, { 1635, 0xcffe }, { 1648, 0xcfee },
  { 1660, 0xfffd }, { 1675, 0xffff }, { 1691, 0xeecf }, { 1703, 0xfd4f },
  { 1715, 0xfcec }, { 1726, 0xcfc4 }, { 1735, 0x4fee }, { 1746, 0xfefc },
  /* 0xd100 */
  { 1759, 0xdfff }, { 1774, 0xffff }, { 1790, 0xffff }, { 1806, 0xfaec },
  { 1817, 0xcfc4 }, { 1826, 0x4fee }, { 1837, 0xeefd }, { 1850, 0xefff },
  { 1865, 0xfeef }, { 1879, 0xffff }, { 1895, 0xfeec }, { 1907, 0xebd4 },
  { 1917, 0xfffe }, { 1932, 0xfeff }, { 1947, 0xffff }, { 1963, 0xfeef },
  /* 0xd200 */
  { 1977, 0xfd7f }, { 1991, 0xfffe }, { 2006, 0xcfff }, { 2020, 0x4fee },
  { 2031, 0xfefd }, { 2045, 0xefff }, { 2060, 0xffef }, { 2075, 0xffff },
  { 2091, 0xfeec }, { 2103, 0xefdc }, { 2115, 0xefee }, { 2128, 0x6cfd },
  { 2139, 0xf4fa }, { 2150, 0xeeef }, { 2163, 0xffcf }, { 2177, 0xfeec },
  /* 0xd300 */
  { 2189, 0x8fd4 }, { 2198, 0x4fae }, { 2208, 0xecdc }, { 2218, 0xc4fe },
  { 2228, 0xffcf }, { 2242, 0xffff }, { 2258, 0xffff }, { 2274, 0xcfff },
  { 2288, 0x4fee }, { 2299, 0xecfc }, { 2310, 0xd4fe }, { 2321, 0xeeef },
  { 2334, 0xfccf }, { 2346, 0xfefe }, { 2360, 0xcff5 }, { 2372, 0x4fee },
  /* 0xd400 */
  { 2383, 0xfefd }, { 2397, 0xdfff }, { 2412, 0xffff }, { 2428, 0xffff },
  { 2444, 0xffee }, { 2458, 0xefff }, { 2473, 0x5fee }, { 2485, 0x6cff },
  { 2497, 0xd4fa }, { 2507, 0xffef }, { 2522, 0xfdff }, { 2537, 0xffff },
  { 2553, 0xefff }, { 2568, 0x6fee }, { 2580, 0xeeff }, { 2594, 0xd6fe },
  /* 0xd500 */
  { 2606, 0xeeef }, { 2619, 0xff4f }, { 2632, 0xffff }, { 2648, 0xcfff },
  { 2662, 0x4fee }, { 2673, 0xecfd }, { 2685, 0xd4de }, { 2695, 0xeecf },
  { 2707, 0xfc4f }, { 2718, 0xfffe }, { 2733, 0xffdf }, { 2748, 0xffff },
  { 2764, 0xecff }, { 2777, 0xd4fa }, { 2787, 0xeecf }, { 2799, 0xfd4f },
  /* 0xd600 */
  { 2811, 0xfeec }, { 2823, 0xefc4 }, { 2833, 0xdfee }, { 2846, 0xecff },
  { 2859, 0xd4de }, { 2869, 0xeecd }, { 2880, 0xfd7f }, { 2894, 0xffec },
  { 2907, 0xcfd7 }, { 2919, 0x5fee }, { 2931, 0xeefd }, { 2944, 0xf5fe },
  { 2957, 0xeecf }, { 2969, 0xfd6d }, { 2981, 0xfeee }, { 2994, 0xcfde },
  /* 0xd700 */
  { 3006, 0xffee }, { 3020, 0xecfd }, { 3032, 0xd4fe }, { 3043, 0xeecf },
  { 3055, 0xfd6f }, { 3068, 0xfc2c }, { 3077, 0xedd4 }, { 3087, 0xcfee },
  { 3099, 0xecfd }, { 3111, 0xd4fe }, { 3122, 0x000f },
};

static int
uhc_2_wctomb (conv_t conv, unsigned char *r, ucs4_t wc, int n)
{
  if (n >= 2) {
    if (wc >= 0xc800 && wc < 0xd7b0) {
      const Summary16 *summary = &uhc_2_uni2indx_pagec8[(wc>>4)-0xc80];
      unsigned short used = summary->used;
      unsigned int i = wc & 0x0f;
      if (used & ((unsigned short) 1 << i)) {
        unsigned short c;
        /* Keep in `used' only the bits 0..i-1. */
        used &= ((unsigned short) 1 << i) - 1;
        /* Add `summary->indx' and the number of bits set in `used'. */
        used = (used & 0x5555) + ((used & 0xaaaa) >> 1);
        used = (used & 0x3333) + ((used & 0xcccc) >> 2);
        used = (used & 0x0f0f) + ((used & 0xf0f0) >> 4);
        used = (used & 0x00ff) + (used >> 8);
        used += summary->indx;
        c = uhc_2_2charset_main[used>>6] + uhc_2_2charset[used];
        r[0] = (c >> 8); r[1] = (c & 0xff);
        return 2;
      }
    }
    return RET_ILUNI;
  }
  return RET_TOOSMALL;
}