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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 | |
26 | typedef struct { |
27 | wchar_t start; |
28 | wchar_t end; |
29 | signed char *table; |
30 | } UNICASERANGE; |
31 | |
32 | extern signed char UniUpperTable[512]; |
33 | extern UNICASERANGE UniUpperRange[]; |
34 | extern int get_UCSname(struct component_name *, struct dentry *); |
35 | extern 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 | */ |
42 | static 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 | */ |
55 | static 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 | */ |
72 | static 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 | */ |
87 | static 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 | */ |
104 | static 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 | */ |
121 | static 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 | */ |
144 | static 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 */ |
157 |
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od-2011-09-04
od-2011-09-18
v2.6.34-rc5
v2.6.34-rc6
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v3.9