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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(0x00A1), UINT32_C(0x0021)},
{UINT32_C(0xA4EF), (uint_least32_t)'A'},
{UINT32_C(0xA4D5), (uint_least32_t)'Y'}, /* the one in letterlike is sans-serif */
{UINT32_C(0xA4F5), (uint_least32_t)'U'},
{UINT32_C(0xA4E5), (uint_least32_t)'V'},
{UINT32_C(0x1D5B8), UINT32_C(0x2144)},
{UINT32_C(0x230D), UINT32_C(0x230F)},
{UINT32_C(0x230C), UINT32_C(0x230E)},
{UINT32_C(0x268E), UINT32_C(0x268D)},
{UINT32_C(0x1D301), UINT32_C(0x1D303)},
{UINT32_C(0x1D302), UINT32_C(0x1D304)},
{UINT32_C(0x23BE), UINT32_C(0x23BF)},
{UINT32_C(0x23CB), UINT32_C(0x23CC)},
{UINT32_C(0x23C9), UINT32_C(0x23CA)},
{UINT32_C(0x23C1), UINT32_C(0x23C2)},
{UINT32_C(0x238F), UINT32_C(0x2390)},
{UINT32_C(0x2391), UINT32_C(0x2392)},
{UINT32_C(0x2571), UINT32_C(0x2572)},
{UINT32_C(0x1FBA2), UINT32_C(0x1FBA0)},
{UINT32_C(0x1FBA3), UINT32_C(0x1FBA1)},
{UINT32_C(0x1FBA6), UINT32_C(0x1FBA7)},
{UINT32_C(0x1FBA8), UINT32_C(0x1FBA9)},
{UINT32_C(0x1FBAA), UINT32_C(0x1FBAC)},
{UINT32_C(0x1FBAB), UINT32_C(0x1FBAD)},
{UINT32_C(0x250C), UINT32_C(0x2514)},
{UINT32_C(0x250D), UINT32_C(0x2515)},
{UINT32_C(0x250E), UINT32_C(0x2516)},
{UINT32_C(0x250F), UINT32_C(0x2517)},
{UINT32_C(0x2510), UINT32_C(0x2518)},
{UINT32_C(0x2511), UINT32_C(0x2519)},
{UINT32_C(0x2512), UINT32_C(0x251A)},
{UINT32_C(0x2513), UINT32_C(0x251B)},
{UINT32_C(0x251F), UINT32_C(0x251E)},
{UINT32_C(0x2522), UINT32_C(0x2521)},
{UINT32_C(0x2527), UINT32_C(0x2526)},
{UINT32_C(0x252A), UINT32_C(0x2529)},
{UINT32_C(0x252C), UINT32_C(0x2534)},
{UINT32_C(0x252D), UINT32_C(0x2535)},
{UINT32_C(0x252E), UINT32_C(0x2536)},
{UINT32_C(0x252F), UINT32_C(0x2537)},
{UINT32_C(0x2530), UINT32_C(0x2538)},
{UINT32_C(0x2531), UINT32_C(0x2539)},
{UINT32_C(0x2532), UINT32_C(0x253A)},
{UINT32_C(0x2533), UINT32_C(0x253B)},
{UINT32_C(0x2541), UINT32_C(0x2540)},
{UINT32_C(0x2545), UINT32_C(0x2543)},
{UINT32_C(0x2546), UINT32_C(0x2544)},
{UINT32_C(0x2548), UINT32_C(0x2547)},
{UINT32_C(0x2552), UINT32_C(0x2558)},
{UINT32_C(0x2553), UINT32_C(0x2559)},
{UINT32_C(0x2554), UINT32_C(0x255A)},
{UINT32_C(0x2555), UINT32_C(0x255B)},
{UINT32_C(0x2556), UINT32_C(0x255C)},
{UINT32_C(0x2557), UINT32_C(0x255D)},
{UINT32_C(0x2564), UINT32_C(0x2567)},
{UINT32_C(0x2565), UINT32_C(0x2568)},
{UINT32_C(0x2566), UINT32_C(0x2569)},
{UINT32_C(0x256D), UINT32_C(0x2570)},
{UINT32_C(0x256E), UINT32_C(0x256F)},
{UINT32_C(0x2575), UINT32_C(0x2577)},
{UINT32_C(0x2579), UINT32_C(0x257B)},
{UINT32_C(0x257D), UINT32_C(0x257F)}
};
enum libcharconv_result
libcharconv_flipped(const char *s, size_t slen, size_t *n, uint_least32_t *cp, size_t *ncp)
{
uint_least32_t c, x1, x2, x3, x4;
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(0x1F063) <= c && c <= UINT32_C(0x1F093)) {
c -= UINT32_C(0x1F063);
c = c % 7u * 7u + c / 7u;
c += UINT32_C(0x1F063);
goto conv;
} else if (UINT32_C(0x2630) <= c && c <= UINT32_C(0x2637)) {
c = ((c & 1u) << 2) | ((c & 4u) >> 2) | (c & ~5u);
goto conv;
} else if (UINT32_C(0x1D306) <= c && c <= UINT32_C(0x1D356)) {
c -= UINT32_C(0x1D306);
x1 = c / 1u % 3u;
x2 = c / 3u % 3u;
x3 = c / 9u % 3u;
x4 = c / 27u % 3u;
c = UINT32_C(0x1D306);
c += x4 * 1u;
c += x3 * 3u;
c += x2 * 9u;
c += x1 * 27u;
goto conv;
} else if (UINT32_C(0x4DC0) <= c && c <= UINT32_C(0x4DFF)) {
for (i = 0u;; i++)
if ((c & 0xFFu) == libcharconv_yijing_hexagrams_[i])
break;
c = (i & 32u) ? 1u : 0u;
c |= (i & 16u) ? 2u : 0u;
c |= (i & 8u) ? 4u : 0u;
c |= (i & 4u) ? 8u : 0u;
c |= (i & 2u) ? 16u : 0u;
c |= (i & 1u) ? 32u : 0u;
c = UINT32_C(0x4D00) | libcharconv_yijing_hexagrams_[c];
goto conv;
} else if (UINT32_C(0x2800) <= c && c <= UINT32_C(0x28FF)) {
c = ((c & 0x01u) << 6) | ((c & 0x40u) >> 6)
| ((c & 0x12u) << 1) | ((c & 0x24u) >> 1)
| ((c & 0x08u) << 4) | ((c & 0x80u) >> 4)
| UINT32_C(0x2800);
goto conv;
} else if (UINT32_C(0x1681) <= c && c <= UINT32_C(0x1685)) {
c += 5u;
goto conv;
} else if (UINT32_C(0x1686) <= c && c <= UINT32_C(0x168A)) {
c -= 5u;
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;
}
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