From 0b44a0315b47dd8eced9f3b7f31580cf14bbfc01 Mon Sep 17 00:00:00 2001 From: Rich Felker Date: Sat, 12 Feb 2011 00:22:29 -0500 Subject: initial check-in, version 0.5.0 --- src/ctype/towctrans.c | 246 ++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 246 insertions(+) create mode 100644 src/ctype/towctrans.c (limited to 'src/ctype/towctrans.c') diff --git a/src/ctype/towctrans.c b/src/ctype/towctrans.c new file mode 100644 index 00000000..0b1eed04 --- /dev/null +++ b/src/ctype/towctrans.c @@ -0,0 +1,246 @@ +#include +#include +#include + +#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), + + 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(0xa722,0xa72e), + CASELACE(0xa732,0xa76e), + CASELACE(0xa779,0xa77b), + CASELACE(0xa77e,0xa786), + + 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 }, + + { 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 }, + { 0x2c72, 0x2c73 }, + { 0x2c75, 0x2c76 }, + + { 0xa77d, 0x1d79 }, + + /* 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; + if ((unsigned)wc - 0x10400 < 0x50) + return wc + lmul*0x28; + /* no letters with case in these large ranges */ + if (!iswalpha(wc) + || (unsigned)wc - 0x0600 <= 0x0fff-0x0600 + || (unsigned)wc - 0x2e00 <= 0xa6ff-0x2e00 + || (unsigned)wc - 0xa800 <= 0xfeff-0xa800) + return wc; + /* special case because the diff between upper/lower is too big */ + if ((unsigned)wc - 0x10a0 < 0x26 || (unsigned)wc - 0x2d00 < 0x26) + return wc + lmul*(0x2d00-0x10a0); + 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 + (lower<<5) + (lower<<3) < 0x28) + return wc - 0x28 + (lower<<10) + (lower<<6); + return wc; +} + +wint_t towupper(wint_t wc) +{ + return __towcase(wc, 0); +} + +wint_t towlower(wint_t wc) +{ + return __towcase(wc, 1); +} -- cgit v1.2.1