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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(0x0020), UINT32_C(0x2588)},
{UINT32_C(0x1FBA3), UINT32_C(0x1FBBE)},
{UINT32_C(0x1FBAE), UINT32_C(0x1FBBF)},
{UINT32_C(0x1FBBD), UINT32_C(0x2573)},
{UINT32_C(0x1F030), UINT32_C(0x1F031)},
{UINT32_C(0x1F062), UINT32_C(0x1F063)},
{UINT32_C(0x2686), UINT32_C(0x2688)},
{UINT32_C(0x2687), UINT32_C(0x2689)},
{UINT32_C(0x2616), UINT32_C(0x26C9)},
{UINT32_C(0x2617), UINT32_C(0x26CA)},
{UINT32_C(0x26C0), UINT32_C(0x26C2)},
{UINT32_C(0x26C1), UINT32_C(0x26C3)}
};
enum libcharconv_result
libcharconv_negative(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(0x1FA60) <= c && c <= UINT32_C(0x1FA66)) {
c += 7u;
goto conv;
} else if (UINT32_C(0x1FA67) <= c && c <= UINT32_C(0x1FA6D)) {
c -= 7u;
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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