projects / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 0635eb8a MG |
1 | #include <linux/ucs2_string.h> |
| 2 | #include <linux/module.h> | |
| 3 | ||
| 4 | /* Return the number of unicode characters in data */ | |
| 5 | unsigned long | |
| 6 | ucs2_strnlen(const ucs2_char_t *s, size_t maxlength) | |
| 7 | { | |
| 8 | unsigned long length = 0; | |
| 9 | ||
| 10 | while (*s++ != 0 && length < maxlength) | |
| 11 | length++; | |
| 12 | return length; | |
| 13 | } | |
| 14 | EXPORT_SYMBOL(ucs2_strnlen); | |
| 15 | ||
| 16 | unsigned long | |
| 17 | ucs2_strlen(const ucs2_char_t *s) | |
| 18 | { | |
| 19 | return ucs2_strnlen(s, ~0UL); | |
| 20 | } | |
| 21 | EXPORT_SYMBOL(ucs2_strlen); | |
| 22 | ||
| 23 | /* | |
| 24 | * Return the number of bytes is the length of this string | |
| 25 | * Note: this is NOT the same as the number of unicode characters | |
| 26 | */ | |
| 27 | unsigned long | |
| 28 | ucs2_strsize(const ucs2_char_t *data, unsigned long maxlength) | |
| 29 | { | |
| 30 | return ucs2_strnlen(data, maxlength/sizeof(ucs2_char_t)) * sizeof(ucs2_char_t); | |
| 31 | } | |
| 32 | EXPORT_SYMBOL(ucs2_strsize); | |
| 33 | ||
| 34 | int | |
| 35 | ucs2_strncmp(const ucs2_char_t *a, const ucs2_char_t *b, size_t len) | |
| 36 | { | |
| 37 | while (1) { | |
| 38 | if (len == 0) | |
| 39 | return 0; | |
| 40 | if (*a < *b) | |
| 41 | return -1; | |
| 42 | if (*a > *b) | |
| 43 | return 1; | |
| 44 | if (*a == 0) /* implies *b == 0 */ | |
| 45 | return 0; | |
| 46 | a++; | |
| 47 | b++; | |
| 48 | len--; | |
| 49 | } | |
| 50 | } | |
| 51 | EXPORT_SYMBOL(ucs2_strncmp); |