nls_utf8.c
上传用户:lgb322
上传日期:2013-02-24
资源大小:30529k
文件大小:1k
- /*
- * 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 = {
- "utf8",
- uni2char,
- char2uni,
- identity, /* no conversion */
- identity,
- 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");