/* See LICENSE file for copyright and license details. */
#include "lib-common.h"


enum libcharconv_result
libcharconv_sans_serif(const char *s, size_t slen, size_t *n, uint_least32_t *cp, size_t *ncp)
{
	uint_least32_t c;
	size_t old_slen;
	*n = 0;
	for (; slen--; s++) {
		old_slen = slen;
		PLAIN_RANGE('A', 'Z', 0x1D5A0);
		PLAIN_RANGE('a', 'z', 0x1D5BA);
		PLAIN_RANGE('0', '9', 0x1D7E2);
		if ((unsigned char)s[0] == 0xE2u) {
			if (!slen--)
				goto indeterminate;
			if ((unsigned char)s[1] == 0x93u) {
				if (!slen--)
					goto indeterminate;
				if ((unsigned char)s[2] == 0xAAu)
					c = (uint_least32_t)UINT32_C(0x1F10B);
				else if ((unsigned char)s[2] == 0xBFu)
					c = (uint_least32_t)UINT32_C(0x1F10C);
				else
					goto no_match;
				goto conv3;
			} else if ((unsigned char)s[1] == 0x91u) {
				if (!slen--)
					goto indeterminate;
				if (0xA0u <= (unsigned char)s[2] && (unsigned char)s[2] <= 0xA9u)
					c = (uint_least32_t)UINT32_C(0x2780);
				else
					goto no_match;
				c += (unsigned char)s[2] - 0xA0u;
				goto conv3;
			} else if ((unsigned char)s[1] == 0x9Du) {
				if (!slen--)
					goto indeterminate;
				if (!slen--)
					goto indeterminate;
				if (0xB6u <= (unsigned char)s[2] && (unsigned char)s[2] <= 0xBFu)
					c = (uint_least32_t)UINT32_C(0x278A);
				else
					goto no_match;
				c += (unsigned char)s[2] - 0xB6u;
				goto conv3;
			} else {
				goto no_match;
			}
		} else {
		no_match:
			slen = old_slen;
			*n += 1u;
		}
	}
no_conv:
	return LIBCHARCONV_NO_CONVERT;

indeterminate:
	return LIBCHARCONV_INDETERMINATE;

conv:
	if (*n)
		goto no_conv;
	if (*ncp)
		*cp = c;
	*n += 1u;
	*ncp = 1u;
	return LIBCHARCONV_CONVERTED;

conv3:
	if (*n)
		goto no_conv;
	if (*ncp)
		*cp = c;
	*n += 3u;
	*ncp = 1u;
	return LIBCHARCONV_CONVERTED;
}