convert 96-bit bson object id to 24 character string plus NUL byte.

oidtest.c

static void
OidToString4(const guint8 *id, /* IN */
             gchar *idstr)     /* OUT */
{
   static const guint16 hex[] = {
#if G_BYTE_ORDER == G_BIG_ENDIAN
      12336, 12337, 12338, 12339, 12340, 12341, 12342, 12343, 12344, 12345, 12385, 12386, 12387, 12388, 12389, 12390, 12592, 12593, 12594, 12595, 12596, 12597, 12598, 12599, 12600, 12601, 12641, 12642, 12643, 12644, 12645, 12646, 12848, 12849, 12850, 12851, 12852, 12853, 12854, 12855, 12856, 12857, 12897, 12898, 12899, 12900, 12901, 12902, 13104, 13105, 13106, 13107, 13108, 13109, 13110, 13111, 13112, 13113, 13153, 13154, 13155, 13156, 13157, 13158, 13360, 13361, 13362, 13363, 13364, 13365, 13366, 13367, 13368, 13369, 13409, 13410, 13411, 13412, 13413, 13414, 13616, 13617, 13618, 13619, 13620, 13621, 13622, 13623, 13624, 13625, 13665, 13666, 13667, 13668, 13669, 13670, 13872, 13873, 13874, 13875, 13876, 13877, 13878, 13879, 13880, 13881, 13921, 13922, 13923, 13924, 13925, 13926, 14128, 14129, 14130, 14131, 14132, 14133, 14134, 14135, 14136, 14137, 14177, 14178, 14179, 14180, 14181, 14182, 14384, 14385, 14386, 14387, 14388, 14389, 14390, 14391, 14392, 14393, 14433, 14434, 14435, 14436, 14437, 14438, 14640, 14641, 14642, 14643, 14644, 14645, 14646, 14647, 14648, 14649, 14689, 14690, 14691, 14692, 14693, 14694, 24880, 24881, 24882, 24883, 24884, 24885, 24886, 24887, 24888, 24889, 24929, 24930, 24931, 24932, 24933, 24934, 25136, 25137, 25138, 25139, 25140, 25141, 25142, 25143, 25144, 25145, 25185, 25186, 25187, 25188, 25189, 25190, 25392, 25393, 25394, 25395, 25396, 25397, 25398, 25399, 25400, 25401, 25441, 25442, 25443, 25444, 25445, 25446, 25648, 25649, 25650, 25651, 25652, 25653, 25654, 25655, 25656, 25657, 25697, 25698, 25699, 25700, 25701, 25702, 25904, 25905, 25906, 25907, 25908, 25909, 25910, 25911, 25912, 25913, 25953, 25954, 25955, 25956, 25957, 25958, 26160, 26161, 26162, 26163, 26164, 26165, 26166, 26167, 26168, 26169, 26209, 26210, 26211, 26212, 26213, 26214
#else
      12336, 12592, 12848, 13104, 13360, 13616, 13872, 14128, 14384, 14640, 24880, 25136, 25392, 25648, 25904, 26160, 12337, 12593, 12849, 13105, 13361, 13617, 13873, 14129, 14385, 14641, 24881, 25137, 25393, 25649, 25905, 26161, 12338, 12594, 12850, 13106, 13362, 13618, 13874, 14130, 14386, 14642, 24882, 25138, 25394, 25650, 25906, 26162, 12339, 12595, 12851, 13107, 13363, 13619, 13875, 14131, 14387, 14643, 24883, 25139, 25395, 25651, 25907, 26163, 12340, 12596, 12852, 13108, 13364, 13620, 13876, 14132, 14388, 14644, 24884, 25140, 25396, 25652, 25908, 26164, 12341, 12597, 12853, 13109, 13365, 13621, 13877, 14133, 14389, 14645, 24885, 25141, 25397, 25653, 25909, 26165, 12342, 12598, 12854, 13110, 13366, 13622, 13878, 14134, 14390, 14646, 24886, 25142, 25398, 25654, 25910, 26166, 12343, 12599, 12855, 13111, 13367, 13623, 13879, 14135, 14391, 14647, 24887, 25143, 25399, 25655, 25911, 26167, 12344, 12600, 12856, 13112, 13368, 13624, 13880, 14136, 14392, 14648, 24888, 25144, 25400, 25656, 25912, 26168, 12345, 12601, 12857, 13113, 13369, 13625, 13881, 14137, 14393, 14649, 24889, 25145, 25401, 25657, 25913, 26169, 12385, 12641, 12897, 13153, 13409, 13665, 13921, 14177, 14433, 14689, 24929, 25185, 25441, 25697, 25953, 26209, 12386, 12642, 12898, 13154, 13410, 13666, 13922, 14178, 14434, 14690, 24930, 25186, 25442, 25698, 25954, 26210, 12387, 12643, 12899, 13155, 13411, 13667, 13923, 14179, 14435, 14691, 24931, 25187, 25443, 25699, 25955, 26211, 12388, 12644, 12900, 13156, 13412, 13668, 13924, 14180, 14436, 14692, 24932, 25188, 25444, 25700, 25956, 26212, 12389, 12645, 12901, 13157, 13413, 13669, 13925, 14181, 14437, 14693, 24933, 25189, 25445, 25701, 25957, 26213, 12390, 12646, 12902, 13158, 13414, 13670, 13926, 14182, 14438, 14694, 24934, 25190, 25446, 25702, 25958, 26214
#endif
   };
   guint16 *dst = (guint16 *)idstr;

   dst[0] = hex[id[0]];
   dst[1] = hex[id[1]];
   dst[2] = hex[id[2]];
   dst[3] = hex[id[3]];
   dst[4] = hex[id[4]];
   dst[5] = hex[id[5]];
   dst[6] = hex[id[6]];
   dst[7] = hex[id[7]];
   dst[8] = hex[id[8]];
   dst[9] = hex[id[9]];
   dst[10] = hex[id[10]];
   dst[11] = hex[id[11]];
   idstr[24] = '\0';
}