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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;
uint_least32_t to;
} pairs[] = {
{UINT32_C(0x00BF), UINT32_C(0x00A1), UINT32_C(0x2E18)},
{UINT32_C(0x0021), UINT32_C(0x003F), UINT32_C(0x203D)},
{UINT32_C(0x1FA06), UINT32_C(0x1FA07), UINT32_C(0x1FA08)},
{UINT32_C(0x1FA1B), UINT32_C(0x1FA1C), UINT32_C(0x1FA1D)},
{UINT32_C(0x1FA30), UINT32_C(0x1FA31), UINT32_C(0x1FA32)},
{UINT32_C(0x1FA45), UINT32_C(0x1FA46), UINT32_C(0x1FA47)},
{UINT32_C(0x1FA48), UINT32_C(0x1FA49), UINT32_C(0x1FA4A)},
{UINT32_C(0x1FA4B), UINT32_C(0x1FA4C), UINT32_C(0x1FA4D)},
{UINT32_C(0x2654), UINT32_C(0x265A), UINT32_C(0x1FA00)},
{UINT32_C(0x2655), UINT32_C(0x265B), UINT32_C(0x1FA01)},
{UINT32_C(0x2656), UINT32_C(0x265C), UINT32_C(0x1FA02)},
{UINT32_C(0x2657), UINT32_C(0x265D), UINT32_C(0x1FA03)},
{UINT32_C(0x2658), UINT32_C(0x265E), UINT32_C(0x1FA04)},
{UINT32_C(0x2659), UINT32_C(0x265F), UINT32_C(0x1FA05)},
{UINT32_C(0x1FA09), UINT32_C(0x1FA0F), UINT32_C(0x1FA15)},
{UINT32_C(0x1FA0A), UINT32_C(0x1FA10), UINT32_C(0x1FA16)},
{UINT32_C(0x1FA0B), UINT32_C(0x1FA11), UINT32_C(0x1FA17)},
{UINT32_C(0x1FA0C), UINT32_C(0x1FA12), UINT32_C(0x1FA18)},
{UINT32_C(0x1FA0D), UINT32_C(0x1FA13), UINT32_C(0x1FA19)},
{UINT32_C(0x1FA0E), UINT32_C(0x1FA14), UINT32_C(0x1FA1A)},
{UINT32_C(0x1FA1E), UINT32_C(0x1FA24), UINT32_C(0x1FA2A)},
{UINT32_C(0x1FA1F), UINT32_C(0x1FA25), UINT32_C(0x1FA2B)},
{UINT32_C(0x1FA20), UINT32_C(0x1FA26), UINT32_C(0x1FA2C)},
{UINT32_C(0x1FA21), UINT32_C(0x1FA27), UINT32_C(0x1FA2D)},
{UINT32_C(0x1FA22), UINT32_C(0x1FA28), UINT32_C(0x1FA2E)},
{UINT32_C(0x1FA23), UINT32_C(0x1FA29), UINT32_C(0x1FA2F)},
{UINT32_C(0x1FA33), UINT32_C(0x1FA39), UINT32_C(0x1FA3F)},
{UINT32_C(0x1FA34), UINT32_C(0x1FA3A), UINT32_C(0x1FA40)},
{UINT32_C(0x1FA35), UINT32_C(0x1FA3B), UINT32_C(0x1FA41)},
{UINT32_C(0x1FA36), UINT32_C(0x1FA3C), UINT32_C(0x1FA42)},
{UINT32_C(0x1FA37), UINT32_C(0x1FA3D), UINT32_C(0x1FA43)},
{UINT32_C(0x1FA38), UINT32_C(0x1FA3E), UINT32_C(0x1FA44)},
{UINT32_C(0x2658), UINT32_C(0x2655), UINT32_C(0x1FA4E)},
{UINT32_C(0x2658), UINT32_C(0x2656), UINT32_C(0x1FA4F)},
{UINT32_C(0x2658), UINT32_C(0x2657), UINT32_C(0x1FA50)},
{UINT32_C(0x265E), UINT32_C(0x265B), UINT32_C(0x1FA51)},
{UINT32_C(0x265E), UINT32_C(0x265C), UINT32_C(0x1FA52)},
{UINT32_C(0x265E), UINT32_C(0x265D), UINT32_C(0x1FA53)},
{UINT32_C(0x23CB), UINT32_C(0x23BE), UINT32_C(0x23C9)},
{UINT32_C(0x23CC), UINT32_C(0x23BF), UINT32_C(0x23CA)},
{UINT32_C(0x23C9), UINT32_C(0x23C0), UINT32_C(0x23C1)},
{UINT32_C(0x23C9), UINT32_C(0x23C3), UINT32_C(0x23C4)},
{UINT32_C(0x23C9), UINT32_C(0x23C6), UINT32_C(0x23C7)},
{UINT32_C(0x23CA), UINT32_C(0x23C0), UINT32_C(0x23C2)},
{UINT32_C(0x23CA), UINT32_C(0x23C3), UINT32_C(0x23C5)},
{UINT32_C(0x23CA), UINT32_C(0x23C6), UINT32_C(0x23C8)}
};
enum libcharconv_result
libcharconv_overlaid(const char *s, size_t slen, size_t *n, uint_least32_t *cp, size_t *ncp)
{
uint_least32_t a, b;
size_t i, alen, blen;
*n = 0;
while (slen) {
alen = libcharconv_decode_utf8_(s, slen, &a);
if (alen > slen) {
if (*n)
goto no_conv;
return LIBCHARCONV_INDETERMINATE;
}
if (!alen) {
*n += 1u;
slen -= 1u;
s = &s[1];
continue;
}
for (i = 0u; i < sizeof(pairs) / sizeof(*pairs); i++) {
if (a != pairs[i].a && a != pairs[i].b)
continue;
if (*n)
goto no_conv;
if (slen == alen)
return LIBCHARCONV_INDETERMINATE;
blen = libcharconv_decode_utf8_(&s[alen], slen - alen, &b);
if (blen > slen)
return LIBCHARCONV_INDETERMINATE;
if (!blen)
goto no_conv;
if ((a ^ b) == (pairs[i].a ^ pairs[i].b))
goto conv;
}
*n += alen;
s = &s[alen];
slen -= alen;
}
no_conv:
return LIBCHARCONV_NO_CONVERT;
conv:
if (*n)
goto no_conv;
if (*ncp)
*cp = pairs[i].to;
*n += alen + blen;
*ncp = 1u;
return LIBCHARCONV_CONVERTED;
}
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