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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/* 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 "../nls/nls_ucs2_data.h"
12#include "jfs_types.h"
13
14extern int get_UCSname(struct component_name *, struct dentry *);
15extern int jfs_strfromUCS_le(char *, const __le16 *, int, struct nls_table *);
16
17#define free_UCSname(COMP) kfree((COMP)->name)
18
19/*
20 * UniStrcpy: Copy a string
21 */
22static inline wchar_t *UniStrcpy(wchar_t * ucs1, const wchar_t * ucs2)
23{
24 wchar_t *anchor = ucs1; /* save the start of result string */
25
26 while ((*ucs1++ = *ucs2++));
27 return anchor;
28}
29
30
31
32/*
33 * UniStrncpy: Copy length limited string with pad
34 */
35static inline __le16 *UniStrncpy_le(__le16 * ucs1, const __le16 * ucs2,
36 size_t n)
37{
38 __le16 *anchor = ucs1;
39
40 while (n-- && *ucs2) /* Copy the strings */
41 *ucs1++ = *ucs2++;
42
43 n++;
44 while (n--) /* Pad with nulls */
45 *ucs1++ = 0;
46 return anchor;
47}
48
49/*
50 * UniStrncmp_le: Compare length limited string - native to little-endian
51 */
52static inline int UniStrncmp_le(const wchar_t * ucs1, const __le16 * ucs2,
53 size_t n)
54{
55 if (!n)
56 return 0; /* Null strings are equal */
57 while ((*ucs1 == __le16_to_cpu(*ucs2)) && *ucs1 && --n) {
58 ucs1++;
59 ucs2++;
60 }
61 return (int) *ucs1 - (int) __le16_to_cpu(*ucs2);
62}
63
64/*
65 * UniStrncpy_to_le: Copy length limited string with pad to little-endian
66 */
67static inline __le16 *UniStrncpy_to_le(__le16 * ucs1, const wchar_t * ucs2,
68 size_t n)
69{
70 __le16 *anchor = ucs1;
71
72 while (n-- && *ucs2) /* Copy the strings */
73 *ucs1++ = cpu_to_le16(*ucs2++);
74
75 n++;
76 while (n--) /* Pad with nulls */
77 *ucs1++ = 0;
78 return anchor;
79}
80
81/*
82 * UniStrncpy_from_le: Copy length limited string with pad from little-endian
83 */
84static inline wchar_t *UniStrncpy_from_le(wchar_t * ucs1, const __le16 * ucs2,
85 size_t n)
86{
87 wchar_t *anchor = ucs1;
88
89 while (n-- && *ucs2) /* Copy the strings */
90 *ucs1++ = __le16_to_cpu(*ucs2++);
91
92 n++;
93 while (n--) /* Pad with nulls */
94 *ucs1++ = 0;
95 return anchor;
96}
97
98/*
99 * UniToupper: Convert a unicode character to upper case
100 */
101static inline wchar_t UniToupper(wchar_t uc)
102{
103 const struct UniCaseRange *rp;
104
105 if (uc < sizeof(NlsUniUpperTable)) { /* Latin characters */
106 return uc + NlsUniUpperTable[uc]; /* Use base tables */
107 } else {
108 rp = NlsUniUpperRange; /* Use range tables */
109 while (rp->start) {
110 if (uc < rp->start) /* Before start of range */
111 return uc; /* Uppercase = input */
112 if (uc <= rp->end) /* In range */
113 return uc + rp->table[uc - rp->start];
114 rp++; /* Try next range */
115 }
116 }
117 return uc; /* Past last range */
118}
119
120
121/*
122 * UniStrupr: Upper case a unicode string
123 */
124static inline wchar_t *UniStrupr(wchar_t * upin)
125{
126 wchar_t *up;
127
128 up = upin;
129 while (*up) { /* For all characters */
130 *up = UniToupper(*up);
131 up++;
132 }
133 return upin; /* Return input pointer */
134}
135
136#endif /* !_H_JFS_UNICODE */