| 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 |
| 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 |
| 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 |
| 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 | |