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/*
* fs/cifs/cifs_unicode.c
*
* Copyright (c) International Business Machines Corp., 2000,2002
* Modified by Steve French (sfrench@us.ibm.com)
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
* the GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <linux/fs.h>
#include "cifs_unicode.h"
#include "cifs_uniupr.h"
#include "cifspdu.h"
#include "cifs_debug.h"
/*
* NAME: cifs_strfromUCS()
*
* FUNCTION: Convert little-endian unicode string to character string
*
*/
int
cifs_strfromUCS_le(char *to, const wchar_t * from, /* LITTLE ENDIAN */
int len, const struct nls_table *codepage)
{
int i;
int outlen = 0;
for (i = 0; (i < len) && from[i]; i++) {
int charlen;
/* 2.4.0 kernel or greater */
charlen =
codepage->uni2char(le16_to_cpu(from[i]), &to[outlen],
NLS_MAX_CHARSET_SIZE);
if (charlen > 0) {
outlen += charlen;
} else {
to[outlen++] = '?';
}
}
to[outlen] = 0;
return outlen;
}
/*
* NAME: cifs_strtoUCS()
*
* FUNCTION: Convert character string to unicode string
*
*/
int
cifs_strtoUCS(wchar_t * to, const char *from, int len,
const struct nls_table *codepage)
{
int charlen;
int i;
for (i = 0; len && *from; i++, from += charlen, len -= charlen) {
/* works for 2.4.0 kernel or later */
charlen = codepage->char2uni(from, len, &to[i]);
if (charlen < 1) {
cERROR(1,
("cifs_strtoUCS: char2uni returned %d",
charlen));
to[i] = cpu_to_le16(0x003f); /* a question mark */
charlen = 1;
}
to[i] = cpu_to_le16(to[i]);
}
to[i] = 0;
return i;
}
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