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79 lines
2.0 KiB
79 lines
2.0 KiB
/* SPDX-License-Identifier: GPL-2.0 */ |
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#ifndef _LINUX_UNICODE_H |
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#define _LINUX_UNICODE_H |
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#include <linux/init.h> |
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#include <linux/dcache.h> |
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struct utf8data; |
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struct utf8data_table; |
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#define UNICODE_MAJ_SHIFT 16 |
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#define UNICODE_MIN_SHIFT 8 |
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#define UNICODE_AGE(MAJ, MIN, REV) \ |
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(((unsigned int)(MAJ) << UNICODE_MAJ_SHIFT) | \ |
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((unsigned int)(MIN) << UNICODE_MIN_SHIFT) | \ |
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((unsigned int)(REV))) |
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static inline u8 unicode_major(unsigned int age) |
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{ |
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return (age >> UNICODE_MAJ_SHIFT) & 0xff; |
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} |
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static inline u8 unicode_minor(unsigned int age) |
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{ |
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return (age >> UNICODE_MIN_SHIFT) & 0xff; |
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} |
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static inline u8 unicode_rev(unsigned int age) |
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{ |
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return age & 0xff; |
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} |
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/* |
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* Two normalization forms are supported: |
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* 1) NFDI |
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* - Apply unicode normalization form NFD. |
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* - Remove any Default_Ignorable_Code_Point. |
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* 2) NFDICF |
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* - Apply unicode normalization form NFD. |
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* - Remove any Default_Ignorable_Code_Point. |
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* - Apply a full casefold (C + F). |
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*/ |
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enum utf8_normalization { |
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UTF8_NFDI = 0, |
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UTF8_NFDICF, |
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UTF8_NMAX, |
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}; |
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struct unicode_map { |
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unsigned int version; |
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const struct utf8data *ntab[UTF8_NMAX]; |
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const struct utf8data_table *tables; |
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}; |
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int utf8_validate(const struct unicode_map *um, const struct qstr *str); |
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int utf8_strncmp(const struct unicode_map *um, |
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const struct qstr *s1, const struct qstr *s2); |
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int utf8_strncasecmp(const struct unicode_map *um, |
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const struct qstr *s1, const struct qstr *s2); |
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int utf8_strncasecmp_folded(const struct unicode_map *um, |
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const struct qstr *cf, |
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const struct qstr *s1); |
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int utf8_normalize(const struct unicode_map *um, const struct qstr *str, |
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unsigned char *dest, size_t dlen); |
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int utf8_casefold(const struct unicode_map *um, const struct qstr *str, |
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unsigned char *dest, size_t dlen); |
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int utf8_casefold_hash(const struct unicode_map *um, const void *salt, |
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struct qstr *str); |
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struct unicode_map *utf8_load(unsigned int version); |
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void utf8_unload(struct unicode_map *um); |
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#endif /* _LINUX_UNICODE_H */
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