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


enum libcharconv_result
libcharconv_ocr(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++) {
		switch (*s) {
		case 's':
		case 'S': c = UINT32_C(0x2440); goto conv;
		case 'h':
		case 'd': c = UINT32_C(0x2441); goto conv;
		case 'Y': c = UINT32_C(0x2442); goto conv;
		case 'A': c = UINT32_C(0x2443); goto conv;
		case 'I': c = UINT32_C(0x2444); goto conv;
		case 'x':
		case 'X': c = UINT32_C(0x2445); goto conv;
		case '\\': c = UINT32_C(0x244A); goto conv;
		case 'c':
		case 'C': c = UINT32_C(0x2446); goto conv;
		case '/': c = UINT32_C(0x2447); goto conv;
		case 'p':
		case 'P': c = UINT32_C(0x2448); goto conv;
		case '_': c = UINT32_C(0x2449); goto conv;
		case 'E': c = UINT32_C(0x2BFF); goto conv;
		default:
			*n += 1u;
			break;
		}
	}
no_conv:
	return LIBCHARCONV_NO_CONVERT;

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