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/* See LICENSE file for copyright and license details. */
#include "lib-common.h"
static struct {
uint_least32_t a;
uint_least32_t b;
} pairs[] = {
{UINT32_C(0x2032), UINT32_C(0x2035)},
{UINT32_C(0x2033), UINT32_C(0x2036)},
{UINT32_C(0x2034), UINT32_C(0x2037)},
{UINT32_C(0x204F), UINT32_C(0x003B)},
{UINT32_C(0x2E2E), UINT32_C(0x003F)},
{UINT32_C(0x2143), UINT32_C(0x004C)},
{UINT32_C(0xA4ED), (uint_least32_t)'B'},
{UINT32_C(0xA4DB), (uint_least32_t)'C'},
{UINT32_C(0xA4F7), (uint_least32_t)'D'},
{UINT32_C(0xA4F1), (uint_least32_t)'E'},
{UINT32_C(0xA4D8), (uint_least32_t)'K'},
{UINT32_C(0x1F12F), UINT32_C(0x00A9)},
{UINT32_C(0x230C), UINT32_C(0x230D)},
{UINT32_C(0x230E), UINT32_C(0x230F)},
{UINT32_C(0x23BE), UINT32_C(0x23CB)},
{UINT32_C(0x23BF), UINT32_C(0x23CC)},
{UINT32_C(0x169B), UINT32_C(0x169C)},
{UINT32_C(0x2571), UINT32_C(0x2572)},
{UINT32_C(0x250C), UINT32_C(0x2510)},
{UINT32_C(0x250D), UINT32_C(0x2511)},
{UINT32_C(0x250E), UINT32_C(0x2512)},
{UINT32_C(0x250F), UINT32_C(0x2513)},
{UINT32_C(0x2514), UINT32_C(0x2518)},
{UINT32_C(0x2515), UINT32_C(0x2519)},
{UINT32_C(0x2516), UINT32_C(0x251A)},
{UINT32_C(0x2517), UINT32_C(0x251B)},
{UINT32_C(0x251C), UINT32_C(0x2524)},
{UINT32_C(0x251D), UINT32_C(0x2525)},
{UINT32_C(0x251E), UINT32_C(0x2526)},
{UINT32_C(0x251F), UINT32_C(0x2527)},
{UINT32_C(0x2520), UINT32_C(0x2528)},
{UINT32_C(0x2521), UINT32_C(0x2529)},
{UINT32_C(0x2522), UINT32_C(0x252A)},
{UINT32_C(0x2523), UINT32_C(0x252B)},
{UINT32_C(0x252E), UINT32_C(0x252D)},
{UINT32_C(0x2532), UINT32_C(0x2531)},
{UINT32_C(0x2536), UINT32_C(0x2535)},
{UINT32_C(0x253A), UINT32_C(0x2539)},
{UINT32_C(0x253E), UINT32_C(0x253D)},
{UINT32_C(0x2544), UINT32_C(0x2543)},
{UINT32_C(0x2546), UINT32_C(0x2545)},
{UINT32_C(0x254A), UINT32_C(0x2549)},
{UINT32_C(0x2552), UINT32_C(0x2555)},
{UINT32_C(0x2553), UINT32_C(0x2556)},
{UINT32_C(0x2554), UINT32_C(0x2557)},
{UINT32_C(0x2558), UINT32_C(0x255B)},
{UINT32_C(0x2559), UINT32_C(0x255C)},
{UINT32_C(0x255A), UINT32_C(0x255D)},
{UINT32_C(0x255E), UINT32_C(0x2561)},
{UINT32_C(0x255F), UINT32_C(0x2562)},
{UINT32_C(0x2560), UINT32_C(0x2563)},
{UINT32_C(0x256D), UINT32_C(0x256E)},
{UINT32_C(0x2570), UINT32_C(0x256F)},
{UINT32_C(0x2574), UINT32_C(0x2576)},
{UINT32_C(0x2578), UINT32_C(0x257A)},
{UINT32_C(0x257C), UINT32_C(0x257E)},
};
enum libcharconv_result
libcharconv_mirrored(const char *s, size_t slen, size_t *n, uint_least32_t *cp, size_t *ncp)
{
uint_least32_t c;
size_t i, clen;
*n = 0;
while (slen) {
clen = libcharconv_decode_utf8_(s, slen, &c);
if (clen > slen) {
if (*n)
goto no_conv;
return LIBCHARCONV_INDETERMINATE;
}
if (!clen) {
*n += 1u;
slen -= 1u;
s = &s[1];
continue;
}
if (UINT32_C(0x1F031) <= c && c <= UINT32_C(0x1F061)) {
c -= UINT32_C(0x1F031);
c = c % 7u * 7u + c / 7u;
c += UINT32_C(0x1F031);
goto conv;
} else if (UINT32_C(0x2800) <= c && c <= UINT32_C(0x28FF)) {
c = ((c & 0x07u) << 3) | ((c & 0x38u) >> 3)
| ((c & 0x40u) << 1) | ((c & 0x80u) >> 1)
| UINT32_C(0x2800);
goto conv;
} else if (UINT32_C(0x1FBA0) <= c && c <= UINT32_C(0x1FBAD)) {
c ^= 1u;
goto conv;
} else {
for (i = 0u; i < sizeof(pairs) / sizeof(*pairs); i++) {
if (c == pairs[i].a) {
c = pairs[i].b;
goto conv;
}
if (c == pairs[i].b) {
c = pairs[i].a;
goto conv;
}
}
}
*n += clen;
s = &s[clen];
slen -= clen;
}
no_conv:
return LIBCHARCONV_NO_CONVERT;
conv:
if (*n)
goto no_conv;
if (*ncp)
*cp = c;
*n += clen;
*ncp = 1u;
return LIBCHARCONV_CONVERTED;
}
|
