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


static struct {
	unsigned char cp_low;
	char latin;
} lydian[] = {
	{0x20, 'a'},
	{0x21, 'b'},
	{0x39, 'c'},
	{0x23, 'd'},
	{0x24, 'e'},
	{0x31, 'f'},
	{0x22, 'g'},
	{0x26, 'i'},
	{0x28, 'k'},
	{0x29, 'l'},
	{0x2A, 'm'},
	{0x2B, 'n'},
	{0x2C, 'o'},
	{0x32, 'q'},
	{0x2D, 'r'},
	{0x33, 's'},
	{0x2F, 't'},
	{0x30, 'u'},
	{0x25, 'v'},
	{0x27, 'y'},
	{0x35, 'A'},
	{0x36, 'E'},
	{0x37, 'L'},
	{0x38, 'N'},
	{0x2E, 'S'},
	{0x34, 'T'},
	{0x3F, '\"'},
	{0x3F, '\''}
};


enum libcharconv_result
libcharconv_lydian(const char *s, size_t slen, size_t *n, uint_least32_t *cp, size_t *ncp)
{
	size_t i;
	*n = 0;
	for (; slen--; s++) {
		for (i = 0u; i < sizeof(lydian) / sizeof(*lydian); i++)
			if (*s == lydian[i].latin)
				goto conv;
		*n += 1u;
	}
no_conv:
	return LIBCHARCONV_NO_CONVERT;

conv:
	if (*n)
		goto no_conv;
	if (*ncp)
		*cp = (uint_least32_t)(UINT32_C(0x10900) | lydian[i].cp_low);
	*n += 1u;
	*ncp = 1u;
	return LIBCHARCONV_CONVERTED;
}