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/*

 * 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");