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/* See LICENSE file for copyright and license details. */
#include "lib-common.h"
enum libcharconv_result
libcharconv_domino_tiles_horizontal(const char *s, size_t slen, size_t *n, uint_least32_t *cp, size_t *ncp)
{
uint_least32_t c;
int vertical;
*n = 0;
for (; slen--; s++) {
if ('0' <= s[0] && s[0] <= '6') {
if (!slen--)
return LIBCHARCONV_INDETERMINATE;
vertical = 0;
if (s[1] == '|')
vertical = 0;
else if (s[1] == '-')
vertical = 1;
else if ('0' <= s[1] && s[1] <= '6')
goto conv2;
else
goto no_match;
if (!slen--)
return LIBCHARCONV_INDETERMINATE;
if ('0' <= s[2] && s[2] <= '6')
goto conv3;
goto no_match;
} else if (s[0] == '#') {
if (!slen--)
return LIBCHARCONV_INDETERMINATE;
vertical = 0;
if (s[1] == '|')
vertical = 0;
else if (s[1] == '-')
vertical = 1;
else if (s[1] == '#')
goto conv2;
else
goto no_match;
if (!slen--)
return LIBCHARCONV_INDETERMINATE;
if (s[2] == '#')
goto conv3;
goto no_match;
} else {
no_match:
*n += 1u;
}
}
no_conv:
return LIBCHARCONV_NO_CONVERT;
conv2:
if (*n)
goto no_conv;
if (*ncp) {
if (s[0] == '#')
c = UINT32_C(0x1F030);
else
c = UINT32_C(0x1F031) + (unsigned)(s[0] - '0') * 7u + (unsigned)(s[1] - '0');
if (vertical)
c += UINT32_C(0x1F062) - UINT32_C(0x1F030);
*cp = c;
}
*n += 2u;
*ncp = 1u;
return LIBCHARCONV_CONVERTED;
conv3:
if (*n)
goto no_conv;
if (*ncp) {
if (s[0] == '#')
c = UINT32_C(0x1F030);
else
c = UINT32_C(0x1F031) + (unsigned)(s[0] - '0') * 7u + (unsigned)(s[2] - '0');
if (vertical)
c += UINT32_C(0x1F062) - UINT32_C(0x1F030);
*cp = c;
}
*n += 3u;
*ncp = 1u;
return LIBCHARCONV_CONVERTED;
}
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