| #include <stddef.h> |
| #include <wctype.h> |
| |
| #define CASEMAP(u1, u2, l) \ |
| { (u1), (l) - (u1), (u2) - (u1) + 1 } |
| #define CASELACE(u1, u2) CASEMAP((u1), (u2), (u1) + 1) |
| |
| static const struct { |
| unsigned short upper; |
| signed char lower; |
| unsigned char len; |
| } casemaps[] = {CASEMAP('A', 'Z', 'a'), CASEMAP(0xc0, 0xde, 0xe0), |
| |
| CASELACE(0x0100, 0x012e), CASELACE(0x0132, 0x0136), |
| CASELACE(0x0139, 0x0147), CASELACE(0x014a, 0x0176), |
| CASELACE(0x0179, 0x017d), |
| |
| CASELACE(0x370, 0x372), CASEMAP(0x391, 0x3a1, 0x3b1), |
| CASEMAP(0x3a3, 0x3ab, 0x3c3), CASEMAP(0x400, 0x40f, 0x450), |
| CASEMAP(0x410, 0x42f, 0x430), |
| |
| CASELACE(0x460, 0x480), CASELACE(0x48a, 0x4be), |
| CASELACE(0x4c1, 0x4cd), CASELACE(0x4d0, 0x50e), |
| |
| CASELACE(0x514, 0x526), CASEMAP(0x531, 0x556, 0x561), |
| |
| CASELACE(0x01a0, 0x01a4), CASELACE(0x01b3, 0x01b5), |
| CASELACE(0x01cd, 0x01db), CASELACE(0x01de, 0x01ee), |
| CASELACE(0x01f8, 0x021e), CASELACE(0x0222, 0x0232), |
| CASELACE(0x03d8, 0x03ee), |
| |
| CASELACE(0x1e00, 0x1e94), CASELACE(0x1ea0, 0x1efe), |
| |
| CASEMAP(0x1f08, 0x1f0f, 0x1f00), CASEMAP(0x1f18, 0x1f1d, 0x1f10), |
| CASEMAP(0x1f28, 0x1f2f, 0x1f20), CASEMAP(0x1f38, 0x1f3f, 0x1f30), |
| CASEMAP(0x1f48, 0x1f4d, 0x1f40), |
| |
| CASEMAP(0x1f68, 0x1f6f, 0x1f60), CASEMAP(0x1f88, 0x1f8f, 0x1f80), |
| CASEMAP(0x1f98, 0x1f9f, 0x1f90), CASEMAP(0x1fa8, 0x1faf, 0x1fa0), |
| CASEMAP(0x1fb8, 0x1fb9, 0x1fb0), CASEMAP(0x1fba, 0x1fbb, 0x1f70), |
| CASEMAP(0x1fc8, 0x1fcb, 0x1f72), CASEMAP(0x1fd8, 0x1fd9, 0x1fd0), |
| CASEMAP(0x1fda, 0x1fdb, 0x1f76), CASEMAP(0x1fe8, 0x1fe9, 0x1fe0), |
| CASEMAP(0x1fea, 0x1feb, 0x1f7a), CASEMAP(0x1ff8, 0x1ff9, 0x1f78), |
| CASEMAP(0x1ffa, 0x1ffb, 0x1f7c), |
| |
| CASELACE(0x246, 0x24e), CASELACE(0x510, 0x512), |
| CASEMAP(0x2160, 0x216f, 0x2170), CASEMAP(0x2c00, 0x2c2e, 0x2c30), |
| CASELACE(0x2c67, 0x2c6b), CASELACE(0x2c80, 0x2ce2), |
| CASELACE(0x2ceb, 0x2ced), |
| |
| CASELACE(0xa640, 0xa66c), CASELACE(0xa680, 0xa696), |
| |
| CASELACE(0xa722, 0xa72e), CASELACE(0xa732, 0xa76e), |
| CASELACE(0xa779, 0xa77b), CASELACE(0xa77e, 0xa786), |
| |
| CASELACE(0xa790, 0xa792), CASELACE(0xa7a0, 0xa7a8), |
| |
| CASEMAP(0xff21, 0xff3a, 0xff41), {0, 0, 0}}; |
| |
| static const unsigned short pairs[][2] = {{'I', 0x0131}, |
| {'S', 0x017f}, |
| {0x0130, 'i'}, |
| {0x0178, 0x00ff}, |
| {0x0181, 0x0253}, |
| {0x0182, 0x0183}, |
| {0x0184, 0x0185}, |
| {0x0186, 0x0254}, |
| {0x0187, 0x0188}, |
| {0x0189, 0x0256}, |
| {0x018a, 0x0257}, |
| {0x018b, 0x018c}, |
| {0x018e, 0x01dd}, |
| {0x018f, 0x0259}, |
| {0x0190, 0x025b}, |
| {0x0191, 0x0192}, |
| {0x0193, 0x0260}, |
| {0x0194, 0x0263}, |
| {0x0196, 0x0269}, |
| {0x0197, 0x0268}, |
| {0x0198, 0x0199}, |
| {0x019c, 0x026f}, |
| {0x019d, 0x0272}, |
| {0x019f, 0x0275}, |
| {0x01a6, 0x0280}, |
| {0x01a7, 0x01a8}, |
| {0x01a9, 0x0283}, |
| {0x01ac, 0x01ad}, |
| {0x01ae, 0x0288}, |
| {0x01af, 0x01b0}, |
| {0x01b1, 0x028a}, |
| {0x01b2, 0x028b}, |
| {0x01b7, 0x0292}, |
| {0x01b8, 0x01b9}, |
| {0x01bc, 0x01bd}, |
| {0x01c4, 0x01c6}, |
| {0x01c4, 0x01c5}, |
| {0x01c5, 0x01c6}, |
| {0x01c7, 0x01c9}, |
| {0x01c7, 0x01c8}, |
| {0x01c8, 0x01c9}, |
| {0x01ca, 0x01cc}, |
| {0x01ca, 0x01cb}, |
| {0x01cb, 0x01cc}, |
| {0x01f1, 0x01f3}, |
| {0x01f1, 0x01f2}, |
| {0x01f2, 0x01f3}, |
| {0x01f4, 0x01f5}, |
| {0x01f6, 0x0195}, |
| {0x01f7, 0x01bf}, |
| {0x0220, 0x019e}, |
| {0x0386, 0x03ac}, |
| {0x0388, 0x03ad}, |
| {0x0389, 0x03ae}, |
| {0x038a, 0x03af}, |
| {0x038c, 0x03cc}, |
| {0x038e, 0x03cd}, |
| {0x038f, 0x03ce}, |
| {0x0399, 0x0345}, |
| {0x0399, 0x1fbe}, |
| {0x03a3, 0x03c2}, |
| {0x03f7, 0x03f8}, |
| {0x03fa, 0x03fb}, |
| {0x1e60, 0x1e9b}, |
| {0x1e9e, 0xdf}, |
| |
| {0x1f59, 0x1f51}, |
| {0x1f5b, 0x1f53}, |
| {0x1f5d, 0x1f55}, |
| {0x1f5f, 0x1f57}, |
| {0x1fbc, 0x1fb3}, |
| {0x1fcc, 0x1fc3}, |
| {0x1fec, 0x1fe5}, |
| {0x1ffc, 0x1ff3}, |
| |
| {0x23a, 0x2c65}, |
| {0x23b, 0x23c}, |
| {0x23d, 0x19a}, |
| {0x23e, 0x2c66}, |
| {0x241, 0x242}, |
| {0x243, 0x180}, |
| {0x244, 0x289}, |
| {0x245, 0x28c}, |
| {0x3f4, 0x3b8}, |
| {0x3f9, 0x3f2}, |
| {0x3fd, 0x37b}, |
| {0x3fe, 0x37c}, |
| {0x3ff, 0x37d}, |
| {0x4c0, 0x4cf}, |
| |
| {0x2126, 0x3c9}, |
| {0x212a, 'k'}, |
| {0x212b, 0xe5}, |
| {0x2132, 0x214e}, |
| {0x2183, 0x2184}, |
| {0x2c60, 0x2c61}, |
| {0x2c62, 0x26b}, |
| {0x2c63, 0x1d7d}, |
| {0x2c64, 0x27d}, |
| {0x2c6d, 0x251}, |
| {0x2c6e, 0x271}, |
| {0x2c6f, 0x250}, |
| {0x2c70, 0x252}, |
| {0x2c72, 0x2c73}, |
| {0x2c75, 0x2c76}, |
| {0x2c7e, 0x23f}, |
| {0x2c7f, 0x240}, |
| {0x2cf2, 0x2cf3}, |
| |
| {0xa77d, 0x1d79}, |
| {0xa78b, 0xa78c}, |
| {0xa78d, 0x265}, |
| {0xa7aa, 0x266}, |
| |
| {0x10c7, 0x2d27}, |
| {0x10cd, 0x2d2d}, |
| |
| /* bogus greek 'symbol' letters */ |
| {0x376, 0x377}, |
| {0x39c, 0xb5}, |
| {0x392, 0x3d0}, |
| {0x398, 0x3d1}, |
| {0x3a6, 0x3d5}, |
| {0x3a0, 0x3d6}, |
| {0x39a, 0x3f0}, |
| {0x3a1, 0x3f1}, |
| {0x395, 0x3f5}, |
| {0x3cf, 0x3d7}, |
| |
| {0, 0}}; |
| |
| static wchar_t __towcase(wchar_t wc, int lower) { |
| int i; |
| int lmul = 2 * lower - 1; |
| int lmask = lower - 1; |
| /* no letters with case in these large ranges */ |
| if (!iswalpha(wc) || (unsigned)wc - 0x0600 <= 0x0fff - 0x0600 || |
| (unsigned)wc - 0x2e00 <= 0xa63f - 0x2e00 || (unsigned)wc - 0xa800 <= 0xfeff - 0xa800) |
| return wc; |
| /* special case because the diff between upper/lower is too big */ |
| if (lower && (unsigned)wc - 0x10a0 < 0x2e) { |
| if (wc > 0x10c5 && wc != 0x10c7 && wc != 0x10cd) |
| return wc; |
| else |
| return wc + 0x2d00 - 0x10a0; |
| } |
| if (!lower && (unsigned)wc - 0x2d00 < 0x26) { |
| if (wc > 0x2d25 && wc != 0x2d27 && wc != 0x2d2d) |
| return wc; |
| else |
| return wc + 0x10a0 - 0x2d00; |
| } |
| for (i = 0; casemaps[i].len; i++) { |
| int base = casemaps[i].upper + (lmask & casemaps[i].lower); |
| if ((unsigned)wc - base < casemaps[i].len) { |
| if (casemaps[i].lower == 1) |
| return wc + lower - ((wc - casemaps[i].upper) & 1); |
| return wc + lmul * casemaps[i].lower; |
| } |
| } |
| for (i = 0; pairs[i][1 - lower]; i++) { |
| if (pairs[i][1 - lower] == wc) |
| return pairs[i][lower]; |
| } |
| if ((unsigned)wc - (0x10428 - 0x28 * lower) < 0x28) |
| return wc - 0x28 + 0x50 * lower; |
| return wc; |
| } |
| |
| wint_t towupper(wint_t wc) { return __towcase(wc, 0); } |
| |
| wint_t towlower(wint_t wc) { return __towcase(wc, 1); } |
