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author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 15:20:36 -0700 |
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committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 15:20:36 -0700 |
commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /include/linux/nls.h | |
download | lwn-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.tar.gz lwn-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.zip |
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
Diffstat (limited to 'include/linux/nls.h')
-rw-r--r-- | include/linux/nls.h | 64 |
1 files changed, 64 insertions, 0 deletions
diff --git a/include/linux/nls.h b/include/linux/nls.h new file mode 100644 index 000000000000..816c04ad7381 --- /dev/null +++ b/include/linux/nls.h @@ -0,0 +1,64 @@ +#ifndef _LINUX_NLS_H +#define _LINUX_NLS_H + +#include <linux/init.h> + +/* unicode character */ +typedef __u16 wchar_t; + +struct nls_table { + char *charset; + char *alias; + int (*uni2char) (wchar_t uni, unsigned char *out, int boundlen); + int (*char2uni) (const unsigned char *rawstring, int boundlen, + wchar_t *uni); + unsigned char *charset2lower; + unsigned char *charset2upper; + struct module *owner; + struct nls_table *next; +}; + +/* this value hold the maximum octet of charset */ +#define NLS_MAX_CHARSET_SIZE 6 /* for UTF-8 */ + +/* nls.c */ +extern int register_nls(struct nls_table *); +extern int unregister_nls(struct nls_table *); +extern struct nls_table *load_nls(char *); +extern void unload_nls(struct nls_table *); +extern struct nls_table *load_nls_default(void); + +extern int utf8_mbtowc(wchar_t *, const __u8 *, int); +extern int utf8_mbstowcs(wchar_t *, const __u8 *, int); +extern int utf8_wctomb(__u8 *, wchar_t, int); +extern int utf8_wcstombs(__u8 *, const wchar_t *, int); + +static inline unsigned char nls_tolower(struct nls_table *t, unsigned char c) +{ + unsigned char nc = t->charset2lower[c]; + + return nc ? nc : c; +} + +static inline unsigned char nls_toupper(struct nls_table *t, unsigned char c) +{ + unsigned char nc = t->charset2upper[c]; + + return nc ? nc : c; +} + +static inline int nls_strnicmp(struct nls_table *t, const unsigned char *s1, + const unsigned char *s2, int len) +{ + while (len--) { + if (nls_tolower(t, *s1++) != nls_tolower(t, *s2++)) + return 1; + } + + return 0; +} + +#define MODULE_ALIAS_NLS(name) MODULE_ALIAS("nls_" __stringify(name)) + +#endif /* _LINUX_NLS_H */ + |