| 1 |
|
| 2 | #ifndef _LINUX_UNICODE_H
|
| 3 | #define _LINUX_UNICODE_H
|
| 4 |
|
| 5 | #include <linux/init.h>
|
| 6 | #include <linux/dcache.h>
|
| 7 |
|
| 8 | struct utf8data;
|
| 9 | struct utf8data_table;
|
| 10 |
|
| 11 | #define UNICODE_MAJ_SHIFT 16
|
| 12 | #define UNICODE_MIN_SHIFT 8
|
| 13 |
|
| 14 | #define UNICODE_AGE(MAJ, MIN, REV) \
|
| 15 | (((unsigned int)(MAJ) << UNICODE_MAJ_SHIFT) | \
|
| 16 | ((unsigned int)(MIN) << UNICODE_MIN_SHIFT) | \
|
| 17 | ((unsigned int)(REV)))
|
| 18 |
|
| 19 | #define UTF8_LATEST UNICODE_AGE(12, 1, 0)
|
| 20 |
|
| 21 | static inline u8 unicode_major(unsigned int age)
|
| 22 | {
|
| 23 | return (age >> UNICODE_MAJ_SHIFT) & 0xff;
|
| 24 | }
|
| 25 |
|
| 26 | static inline u8 unicode_minor(unsigned int age)
|
| 27 | {
|
| 28 | return (age >> UNICODE_MIN_SHIFT) & 0xff;
|
| 29 | }
|
| 30 |
|
| 31 | static inline u8 unicode_rev(unsigned int age)
|
| 32 | {
|
| 33 | return age & 0xff;
|
| 34 | }
|
| 35 |
|
| 36 | |
| 37 | * Two normalization forms are supported:
|
| 38 | * 1) NFDI
|
| 39 | * - Apply unicode normalization form NFD.
|
| 40 | * - Remove any Default_Ignorable_Code_Point.
|
| 41 | * 2) NFDICF
|
| 42 | * - Apply unicode normalization form NFD.
|
| 43 | * - Remove any Default_Ignorable_Code_Point.
|
| 44 | * - Apply a full casefold (C + F).
|
| 45 |
|
| 46 | enum utf8_normalization {
|
| 47 | UTF8_NFDI = 0,
|
| 48 | UTF8_NFDICF,
|
| 49 | UTF8_NMAX,
|
| 50 | };
|
| 51 |
|
| 52 | struct unicode_map {
|
| 53 | unsigned int version;
|
| 54 | const struct utf8data *ntab[UTF8_NMAX];
|
| 55 | const struct utf8data_table *tables;
|
| 56 | };
|
| 57 |
|
| 58 | int utf8_validate(const struct unicode_map *um, const struct qstr *str);
|
| 59 |
|
| 60 | int utf8_strncmp(const struct unicode_map *um,
|
| 61 | const struct qstr *s1, const struct qstr *s2);
|
| 62 |
|
| 63 | int utf8_strncasecmp(const struct unicode_map *um,
|
| 64 | const struct qstr *s1, const struct qstr *s2);
|
| 65 | int utf8_strncasecmp_folded(const struct unicode_map *um,
|
| 66 | const struct qstr *cf,
|
| 67 | const struct qstr *s1);
|
| 68 |
|
| 69 | int utf8_normalize(const struct unicode_map *um, const struct qstr *str,
|
| 70 | unsigned char *dest, size_t dlen);
|
| 71 |
|
| 72 | int utf8_casefold(const struct unicode_map *um, const struct qstr *str,
|
| 73 | unsigned char *dest, size_t dlen);
|
| 74 |
|
| 75 | int utf8_casefold_hash(const struct unicode_map *um, const void *salt,
|
| 76 | struct qstr *str);
|
| 77 |
|
| 78 | struct unicode_map *utf8_load(unsigned int version);
|
| 79 | void utf8_unload(struct unicode_map *um);
|
| 80 |
|
| 81 | int utf8_parse_version(char *version);
|
| 82 |
|
| 83 | #endif
|