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1/* SPDX-License-Identifier: GPL-2.0-or-later */
2/*
3 * Copyright (C) International Business Machines Corp., 2000-2002
4 * Portions Copyright (C) Christoph Hellwig, 2001-2002
5 */
6#ifndef _H_JFS_UNICODE
7#define _H_JFS_UNICODE
8
9#include <linux/slab.h>
10#include <asm/byteorder.h>
11#include "jfs_types.h"
12
13typedef struct {
14 wchar_t start;
15 wchar_t end;
16 signed char *table;
17} UNICASERANGE;
18
19extern signed char UniUpperTable[512];
20extern UNICASERANGE UniUpperRange[];
21extern int get_UCSname(struct component_name *, struct dentry *);
22extern int jfs_strfromUCS_le(char *, const __le16 *, int, struct nls_table *);
23
24#define free_UCSname(COMP) kfree((COMP)->name)
25
26/*
27 * UniStrcpy: Copy a string
28 */
29static inline wchar_t *UniStrcpy(wchar_t * ucs1, const wchar_t * ucs2)
30{
31 wchar_t *anchor = ucs1; /* save the start of result string */
32
33 while ((*ucs1++ = *ucs2++));
34 return anchor;
35}
36
37
38
39/*
40 * UniStrncpy: Copy length limited string with pad
41 */
42static inline __le16 *UniStrncpy_le(__le16 * ucs1, const __le16 * ucs2,
43 size_t n)
44{
45 __le16 *anchor = ucs1;
46
47 while (n-- && *ucs2) /* Copy the strings */
48 *ucs1++ = *ucs2++;
49
50 n++;
51 while (n--) /* Pad with nulls */
52 *ucs1++ = 0;
53 return anchor;
54}
55
56/*
57 * UniStrncmp_le: Compare length limited string - native to little-endian
58 */
59static inline int UniStrncmp_le(const wchar_t * ucs1, const __le16 * ucs2,
60 size_t n)
61{
62 if (!n)
63 return 0; /* Null strings are equal */
64 while ((*ucs1 == __le16_to_cpu(*ucs2)) && *ucs1 && --n) {
65 ucs1++;
66 ucs2++;
67 }
68 return (int) *ucs1 - (int) __le16_to_cpu(*ucs2);
69}
70
71/*
72 * UniStrncpy_to_le: Copy length limited string with pad to little-endian
73 */
74static inline __le16 *UniStrncpy_to_le(__le16 * ucs1, const wchar_t * ucs2,
75 size_t n)
76{
77 __le16 *anchor = ucs1;
78
79 while (n-- && *ucs2) /* Copy the strings */
80 *ucs1++ = cpu_to_le16(*ucs2++);
81
82 n++;
83 while (n--) /* Pad with nulls */
84 *ucs1++ = 0;
85 return anchor;
86}
87
88/*
89 * UniStrncpy_from_le: Copy length limited string with pad from little-endian
90 */
91static inline wchar_t *UniStrncpy_from_le(wchar_t * ucs1, const __le16 * ucs2,
92 size_t n)
93{
94 wchar_t *anchor = ucs1;
95
96 while (n-- && *ucs2) /* Copy the strings */
97 *ucs1++ = __le16_to_cpu(*ucs2++);
98
99 n++;
100 while (n--) /* Pad with nulls */
101 *ucs1++ = 0;
102 return anchor;
103}
104
105/*
106 * UniToupper: Convert a unicode character to upper case
107 */
108static inline wchar_t UniToupper(wchar_t uc)
109{
110 UNICASERANGE *rp;
111
112 if (uc < sizeof(UniUpperTable)) { /* Latin characters */
113 return uc + UniUpperTable[uc]; /* Use base tables */
114 } else {
115 rp = UniUpperRange; /* Use range tables */
116 while (rp->start) {
117 if (uc < rp->start) /* Before start of range */
118 return uc; /* Uppercase = input */
119 if (uc <= rp->end) /* In range */
120 return uc + rp->table[uc - rp->start];
121 rp++; /* Try next range */
122 }
123 }
124 return uc; /* Past last range */
125}
126
127
128/*
129 * UniStrupr: Upper case a unicode string
130 */
131static inline wchar_t *UniStrupr(wchar_t * upin)
132{
133 wchar_t *up;
134
135 up = upin;
136 while (*up) { /* For all characters */
137 *up = UniToupper(*up);
138 up++;
139 }
140 return upin; /* Return input pointer */
141}
142
143#endif /* !_H_JFS_UNICODE */
1/*
2 * Copyright (C) International Business Machines Corp., 2000-2002
3 * Portions Copyright (C) Christoph Hellwig, 2001-2002
4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
9 *
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
13 * the GNU General Public License for more details.
14 *
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
18 */
19#ifndef _H_JFS_UNICODE
20#define _H_JFS_UNICODE
21
22#include <linux/slab.h>
23#include <asm/byteorder.h>
24#include "jfs_types.h"
25
26typedef struct {
27 wchar_t start;
28 wchar_t end;
29 signed char *table;
30} UNICASERANGE;
31
32extern signed char UniUpperTable[512];
33extern UNICASERANGE UniUpperRange[];
34extern int get_UCSname(struct component_name *, struct dentry *);
35extern int jfs_strfromUCS_le(char *, const __le16 *, int, struct nls_table *);
36
37#define free_UCSname(COMP) kfree((COMP)->name)
38
39/*
40 * UniStrcpy: Copy a string
41 */
42static inline wchar_t *UniStrcpy(wchar_t * ucs1, const wchar_t * ucs2)
43{
44 wchar_t *anchor = ucs1; /* save the start of result string */
45
46 while ((*ucs1++ = *ucs2++));
47 return anchor;
48}
49
50
51
52/*
53 * UniStrncpy: Copy length limited string with pad
54 */
55static inline __le16 *UniStrncpy_le(__le16 * ucs1, const __le16 * ucs2,
56 size_t n)
57{
58 __le16 *anchor = ucs1;
59
60 while (n-- && *ucs2) /* Copy the strings */
61 *ucs1++ = *ucs2++;
62
63 n++;
64 while (n--) /* Pad with nulls */
65 *ucs1++ = 0;
66 return anchor;
67}
68
69/*
70 * UniStrncmp_le: Compare length limited string - native to little-endian
71 */
72static inline int UniStrncmp_le(const wchar_t * ucs1, const __le16 * ucs2,
73 size_t n)
74{
75 if (!n)
76 return 0; /* Null strings are equal */
77 while ((*ucs1 == __le16_to_cpu(*ucs2)) && *ucs1 && --n) {
78 ucs1++;
79 ucs2++;
80 }
81 return (int) *ucs1 - (int) __le16_to_cpu(*ucs2);
82}
83
84/*
85 * UniStrncpy_to_le: Copy length limited string with pad to little-endian
86 */
87static inline __le16 *UniStrncpy_to_le(__le16 * ucs1, const wchar_t * ucs2,
88 size_t n)
89{
90 __le16 *anchor = ucs1;
91
92 while (n-- && *ucs2) /* Copy the strings */
93 *ucs1++ = cpu_to_le16(*ucs2++);
94
95 n++;
96 while (n--) /* Pad with nulls */
97 *ucs1++ = 0;
98 return anchor;
99}
100
101/*
102 * UniStrncpy_from_le: Copy length limited string with pad from little-endian
103 */
104static inline wchar_t *UniStrncpy_from_le(wchar_t * ucs1, const __le16 * ucs2,
105 size_t n)
106{
107 wchar_t *anchor = ucs1;
108
109 while (n-- && *ucs2) /* Copy the strings */
110 *ucs1++ = __le16_to_cpu(*ucs2++);
111
112 n++;
113 while (n--) /* Pad with nulls */
114 *ucs1++ = 0;
115 return anchor;
116}
117
118/*
119 * UniToupper: Convert a unicode character to upper case
120 */
121static inline wchar_t UniToupper(wchar_t uc)
122{
123 UNICASERANGE *rp;
124
125 if (uc < sizeof(UniUpperTable)) { /* Latin characters */
126 return uc + UniUpperTable[uc]; /* Use base tables */
127 } else {
128 rp = UniUpperRange; /* Use range tables */
129 while (rp->start) {
130 if (uc < rp->start) /* Before start of range */
131 return uc; /* Uppercase = input */
132 if (uc <= rp->end) /* In range */
133 return uc + rp->table[uc - rp->start];
134 rp++; /* Try next range */
135 }
136 }
137 return uc; /* Past last range */
138}
139
140
141/*
142 * UniStrupr: Upper case a unicode string
143 */
144static inline wchar_t *UniStrupr(wchar_t * upin)
145{
146 wchar_t *up;
147
148 up = upin;
149 while (*up) { /* For all characters */
150 *up = UniToupper(*up);
151 up++;
152 }
153 return upin; /* Return input pointer */
154}
155
156#endif /* !_H_JFS_UNICODE */