kernel-ark/fs/nls/nls_utf8.c
Linus Torvalds 1da177e4c3 Linux-2.6.12-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!
2005-04-16 15:20:36 -07:00

62 lines
1.1 KiB
C

/*
* Module for handling utf8 just like any other charset.
* By Urban Widmark 2000
*/
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/string.h>
#include <linux/nls.h>
#include <linux/errno.h>
static unsigned char identity[256];
static int uni2char(wchar_t uni, unsigned char *out, int boundlen)
{
int n;
if ( (n = utf8_wctomb(out, uni, boundlen)) == -1) {
*out = '?';
return -EINVAL;
}
return n;
}
static int char2uni(const unsigned char *rawstring, int boundlen, wchar_t *uni)
{
int n;
if ( (n = utf8_mbtowc(uni, rawstring, boundlen)) == -1) {
*uni = 0x003f; /* ? */
n = -EINVAL;
}
return n;
}
static struct nls_table table = {
.charset = "utf8",
.uni2char = uni2char,
.char2uni = char2uni,
.charset2lower = identity, /* no conversion */
.charset2upper = identity,
.owner = THIS_MODULE,
};
static int __init init_nls_utf8(void)
{
int i;
for (i=0; i<256; i++)
identity[i] = i;
return register_nls(&table);
}
static void __exit exit_nls_utf8(void)
{
unregister_nls(&table);
}
module_init(init_nls_utf8)
module_exit(exit_nls_utf8)
MODULE_LICENSE("Dual BSD/GPL");