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/* See LICENSE file for copyright and license details. */
#include "lib-common.h"
static struct {
uint_least32_t to;
uint_least32_t from;
} pairs[] = {
{UINT32_C(0x1FA04), UINT32_C(0x1FA08)},
{UINT32_C(0x1FA08), UINT32_C(0x1FA19)},
{UINT32_C(0x1FA19), UINT32_C(0x1FA1D)},
{UINT32_C(0x1FA1D), UINT32_C(0x1FA2E)},
{UINT32_C(0x1FA2E), UINT32_C(0x1FA32)},
{UINT32_C(0x1FA32), UINT32_C(0x1FA43)},
{UINT32_C(0x1FA43), UINT32_C(0x1FA47)},
{UINT32_C(0x1FA47), UINT32_C(0x1FA04)},
{UINT32_C(0x2658), UINT32_C(0x1FA06)},
{UINT32_C(0x1FA06), UINT32_C(0x1FA0D)},
{UINT32_C(0x1FA0D), UINT32_C(0x1FA1B)},
{UINT32_C(0x1FA1B), UINT32_C(0x1FA22)},
{UINT32_C(0x1FA22), UINT32_C(0x1FA30)},
{UINT32_C(0x1FA30), UINT32_C(0x1FA37)},
{UINT32_C(0x1FA37), UINT32_C(0x1FA45)},
{UINT32_C(0x1FA45), UINT32_C(0x2658)},
{UINT32_C(0x265E), UINT32_C(0x1FA07)},
{UINT32_C(0x1FA07), UINT32_C(0x1FA13)},
{UINT32_C(0x1FA13), UINT32_C(0x1FA1C)},
{UINT32_C(0x1FA1C), UINT32_C(0x1FA28)},
{UINT32_C(0x1FA28), UINT32_C(0x1FA31)},
{UINT32_C(0x1FA31), UINT32_C(0x1FA3D)},
{UINT32_C(0x1FA3D), UINT32_C(0x1FA46)},
{UINT32_C(0x1FA46), UINT32_C(0x265E)}
};
enum libcharconv_result
libcharconv_rotated_45deg_ccw(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;
}
for (i = 0u; i < sizeof(pairs) / sizeof(*pairs); i++) {
if (c == pairs[i].from) {
c = pairs[i].to;
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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