1 /* $NetBSD: ntfs_conv.c,v 1.10 2015/02/20 17:08:13 maxv Exp $ */
2
3 /*-
4 * Copyright (c) 2001 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
17 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
18 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
19 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
20 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
26 * POSSIBILITY OF SUCH DAMAGE.
27 */
28
29 /*
30 * File name recode stuff.
31 */
32
33 #include <sys/cdefs.h>
34 __KERNEL_RCSID(0, "$NetBSD: ntfs_conv.c,v 1.10 2015/02/20 17:08:13 maxv Exp $");
35
36 #include <sys/param.h>
37 #include <sys/systm.h>
38 #include <sys/namei.h>
39 #include <sys/kernel.h>
40 #include <sys/mount.h>
41 #include <sys/malloc.h>
42
43 #include <fs/ntfs/ntfs.h>
44 #include <fs/ntfs/ntfs_inode.h>
45 #include <fs/ntfs/ntfs_subr.h>
46
47 /* UTF-8 encoding stuff */
48 #include <fs/unicode.h>
49
50 /*
51 * Read one wide character off the string, shift the string pointer
52 * and return the character.
53 */
54 wchar
ntfs_utf8_wget(const char ** str,size_t * sz)55 ntfs_utf8_wget(const char **str, size_t *sz)
56 {
57 return (wchar) wget_utf8(str, sz);
58 }
59
60 /*
61 * Encode wide character and write it to the string. 'n' specifies
62 * how much space there is in the string. Returns number of bytes written
63 * to the target string.
64 */
65 int
ntfs_utf8_wput(char * s,size_t n,wchar wc)66 ntfs_utf8_wput(char *s, size_t n, wchar wc)
67 {
68 return wput_utf8(s, n, (u_int16_t) wc);
69 }
70
71 /*
72 * Compare two wide characters, returning 1, 0, -1 if the first is
73 * bigger, equal or lower than the second.
74 */
75 int
ntfs_utf8_wcmp(wchar wc1,wchar wc2)76 ntfs_utf8_wcmp(wchar wc1, wchar wc2)
77 {
78 /* no conversions needed for utf8 */
79
80 if (wc1 == wc2)
81 return 0;
82 else
83 return (int) wc1 - (int) wc2;
84 }
85