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/* See LICENSE file for copyright and license details. */
#include "lib-common.h"
enum libcharconv_result
libcharconv_yijing_digrams(const char *s, size_t slen, size_t *n, uint_least32_t *cp, size_t *ncp)
{
uint_least32_t c;
*n = 0;
for (; slen--; s++) {
if ('1' <= s[0] && s[0] <= '3') {
if (!slen)
return LIBCHARCONV_INDETERMINATE;
if (s[0] == '1' && s[1] == '1') c = UINT32_C(0x268C);
else if (s[0] == '1' && s[1] == '2') c = UINT32_C(0x268E);
else if (s[0] == '1' && s[1] == '3') c = UINT32_C(0x1D301);
else if (s[0] == '2' && s[1] == '1') c = UINT32_C(0x268D);
else if (s[0] == '2' && s[1] == '2') c = UINT32_C(0x268F);
else if (s[0] == '2' && s[1] == '3') c = UINT32_C(0x1D302);
else if (s[0] == '3' && s[1] == '1') c = UINT32_C(0x1D303);
else if (s[0] == '3' && s[1] == '2') c = UINT32_C(0x1D304);
else if (s[0] == '3' && s[1] == '3') c = UINT32_C(0x1D305);
else
goto no_match;
goto conv;
} else {
no_match:
*n += 1u;
}
}
no_conv:
return LIBCHARCONV_NO_CONVERT;
conv:
if (*n)
goto no_conv;
if (*ncp)
*cp = c;
*n += 2u;
*ncp = 1u;
return LIBCHARCONV_CONVERTED;
}
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