unicode.h

/* SPDX-License-Identifier: GPL-2.0-only */
/*
 * Copyright (C) 2018 Ernesto A. Fernández <ernesto.mnd.fernandez@gmail.com>
 */

#ifndef_APFS_UNICODE_H
#define_APFS_UNICODE_H

#include<linux/nls.h>

/*
 * This structure helps apfs_normalize_next() to retrieve one normalized
 * (and case-folded) UTF-32 character at a time from a UTF-8 string.
 */
structapfs_unicursor {
constchar*utf8curr; /* Start of UTF-8 to decompose and reorder */
unsigned inttotal_len; /* Length of the whole UTF-8 string */
intlength; /* Length of normalization until next starter */
intlast_pos; /* Offset in substring of last char returned */
u8last_ccc; /* CCC of the last character returned */
};

externvoidapfs_init_unicursor(structapfs_unicursor*cursor, constchar*utf8str, unsigned inttotal_len);
externunicode_tapfs_normalize_next(structapfs_unicursor*cursor,
boolcase_fold);

#endif/* _APFS_UNICODE_H */