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1da177e4 LT |
1 | /* |
2 | * linux/fs/nls_ascii.c | |
3 | * | |
4 | * Charset ascii translation tables. | |
5 | * Generated automatically from the Unicode and charset | |
6 | * tables from the Unicode Organization (www.unicode.org). | |
7 | * The Unicode to charset table has only exact mappings. | |
8 | */ | |
9 | ||
10 | #include <linux/module.h> | |
11 | #include <linux/kernel.h> | |
12 | #include <linux/string.h> | |
13 | #include <linux/nls.h> | |
14 | #include <linux/errno.h> | |
15 | ||
16 | static wchar_t charset2uni[256] = { | |
17 | /* 0x00*/ | |
18 | 0x0000, 0x0001, 0x0002, 0x0003, | |
19 | 0x0004, 0x0005, 0x0006, 0x0007, | |
20 | 0x0008, 0x0009, 0x000a, 0x000b, | |
21 | 0x000c, 0x000d, 0x000e, 0x000f, | |
22 | /* 0x10*/ | |
23 | 0x0010, 0x0011, 0x0012, 0x0013, | |
24 | 0x0014, 0x0015, 0x0016, 0x0017, | |
25 | 0x0018, 0x0019, 0x001a, 0x001b, | |
26 | 0x001c, 0x001d, 0x001e, 0x001f, | |
27 | /* 0x20*/ | |
28 | 0x0020, 0x0021, 0x0022, 0x0023, | |
29 | 0x0024, 0x0025, 0x0026, 0x0027, | |
30 | 0x0028, 0x0029, 0x002a, 0x002b, | |
31 | 0x002c, 0x002d, 0x002e, 0x002f, | |
32 | /* 0x30*/ | |
33 | 0x0030, 0x0031, 0x0032, 0x0033, | |
34 | 0x0034, 0x0035, 0x0036, 0x0037, | |
35 | 0x0038, 0x0039, 0x003a, 0x003b, | |
36 | 0x003c, 0x003d, 0x003e, 0x003f, | |
37 | /* 0x40*/ | |
38 | 0x0040, 0x0041, 0x0042, 0x0043, | |
39 | 0x0044, 0x0045, 0x0046, 0x0047, | |
40 | 0x0048, 0x0049, 0x004a, 0x004b, | |
41 | 0x004c, 0x004d, 0x004e, 0x004f, | |
42 | /* 0x50*/ | |
43 | 0x0050, 0x0051, 0x0052, 0x0053, | |
44 | 0x0054, 0x0055, 0x0056, 0x0057, | |
45 | 0x0058, 0x0059, 0x005a, 0x005b, | |
46 | 0x005c, 0x005d, 0x005e, 0x005f, | |
47 | /* 0x60*/ | |
48 | 0x0060, 0x0061, 0x0062, 0x0063, | |
49 | 0x0064, 0x0065, 0x0066, 0x0067, | |
50 | 0x0068, 0x0069, 0x006a, 0x006b, | |
51 | 0x006c, 0x006d, 0x006e, 0x006f, | |
52 | /* 0x70*/ | |
53 | 0x0070, 0x0071, 0x0072, 0x0073, | |
54 | 0x0074, 0x0075, 0x0076, 0x0077, | |
55 | 0x0078, 0x0079, 0x007a, 0x007b, | |
56 | 0x007c, 0x007d, 0x007e, 0x007f, | |
57 | }; | |
58 | ||
59 | static unsigned char page00[256] = { | |
60 | 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, /* 0x00-0x07 */ | |
61 | 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, /* 0x08-0x0f */ | |
62 | 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, /* 0x10-0x17 */ | |
63 | 0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f, /* 0x18-0x1f */ | |
64 | 0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, /* 0x20-0x27 */ | |
65 | 0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f, /* 0x28-0x2f */ | |
66 | 0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, /* 0x30-0x37 */ | |
67 | 0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e, 0x3f, /* 0x38-0x3f */ | |
68 | 0x40, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, /* 0x40-0x47 */ | |
69 | 0x48, 0x49, 0x4a, 0x4b, 0x4c, 0x4d, 0x4e, 0x4f, /* 0x48-0x4f */ | |
70 | 0x50, 0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57, /* 0x50-0x57 */ | |
71 | 0x58, 0x59, 0x5a, 0x5b, 0x5c, 0x5d, 0x5e, 0x5f, /* 0x58-0x5f */ | |
72 | 0x60, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67, /* 0x60-0x67 */ | |
73 | 0x68, 0x69, 0x6a, 0x6b, 0x6c, 0x6d, 0x6e, 0x6f, /* 0x68-0x6f */ | |
74 | 0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77, /* 0x70-0x77 */ | |
75 | 0x78, 0x79, 0x7a, 0x7b, 0x7c, 0x7d, 0x7e, 0x7f, /* 0x78-0x7f */ | |
76 | }; | |
77 | ||
78 | static unsigned char *page_uni2charset[256] = { | |
79 | page00, | |
80 | }; | |
81 | ||
82 | static unsigned char charset2lower[256] = { | |
83 | 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, /* 0x00-0x07 */ | |
84 | 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, /* 0x08-0x0f */ | |
85 | 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, /* 0x10-0x17 */ | |
86 | 0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f, /* 0x18-0x1f */ | |
87 | 0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, /* 0x20-0x27 */ | |
88 | 0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f, /* 0x28-0x2f */ | |
89 | 0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, /* 0x30-0x37 */ | |
90 | 0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e, 0x3f, /* 0x38-0x3f */ | |
91 | 0x40, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67, /* 0x40-0x47 */ | |
92 | 0x68, 0x69, 0x6a, 0x6b, 0x6c, 0x6d, 0x6e, 0x6f, /* 0x48-0x4f */ | |
93 | 0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77, /* 0x50-0x57 */ | |
94 | 0x78, 0x79, 0x7a, 0x5b, 0x5c, 0x5d, 0x5e, 0x5f, /* 0x58-0x5f */ | |
95 | 0x60, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67, /* 0x60-0x67 */ | |
96 | 0x68, 0x69, 0x6a, 0x6b, 0x6c, 0x6d, 0x6e, 0x6f, /* 0x68-0x6f */ | |
97 | 0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77, /* 0x70-0x77 */ | |
98 | 0x78, 0x79, 0x7a, 0x7b, 0x7c, 0x7d, 0x7e, 0x7f, /* 0x78-0x7f */ | |
99 | }; | |
100 | ||
101 | static unsigned char charset2upper[256] = { | |
102 | 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, /* 0x00-0x07 */ | |
103 | 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, /* 0x08-0x0f */ | |
104 | 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, /* 0x10-0x17 */ | |
105 | 0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f, /* 0x18-0x1f */ | |
106 | 0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, /* 0x20-0x27 */ | |
107 | 0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f, /* 0x28-0x2f */ | |
108 | 0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, /* 0x30-0x37 */ | |
109 | 0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e, 0x3f, /* 0x38-0x3f */ | |
110 | 0x40, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, /* 0x40-0x47 */ | |
111 | 0x48, 0x49, 0x4a, 0x4b, 0x4c, 0x4d, 0x4e, 0x4f, /* 0x48-0x4f */ | |
112 | 0x50, 0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57, /* 0x50-0x57 */ | |
113 | 0x58, 0x59, 0x5a, 0x5b, 0x5c, 0x5d, 0x5e, 0x5f, /* 0x58-0x5f */ | |
114 | 0x60, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, /* 0x60-0x67 */ | |
115 | 0x48, 0x49, 0x4a, 0x4b, 0x4c, 0x4d, 0x4e, 0x4f, /* 0x68-0x6f */ | |
116 | 0x50, 0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57, /* 0x70-0x77 */ | |
117 | 0x58, 0x59, 0x5a, 0x7b, 0x7c, 0x7d, 0x7e, 0x7f, /* 0x78-0x7f */ | |
118 | }; | |
119 | ||
120 | static int uni2char(wchar_t uni, unsigned char *out, int boundlen) | |
121 | { | |
122 | unsigned char *uni2charset; | |
123 | unsigned char cl = uni & 0x00ff; | |
124 | unsigned char ch = (uni & 0xff00) >> 8; | |
125 | ||
126 | if (boundlen <= 0) | |
127 | return -ENAMETOOLONG; | |
128 | ||
129 | uni2charset = page_uni2charset[ch]; | |
130 | if (uni2charset && uni2charset[cl]) | |
131 | out[0] = uni2charset[cl]; | |
132 | else | |
133 | return -EINVAL; | |
134 | return 1; | |
135 | } | |
136 | ||
137 | static int char2uni(const unsigned char *rawstring, int boundlen, wchar_t *uni) | |
138 | { | |
139 | *uni = charset2uni[*rawstring]; | |
140 | if (*uni == 0x0000) | |
141 | return -EINVAL; | |
142 | return 1; | |
143 | } | |
144 | ||
145 | static struct nls_table table = { | |
146 | .charset = "ascii", | |
147 | .uni2char = uni2char, | |
148 | .char2uni = char2uni, | |
149 | .charset2lower = charset2lower, | |
150 | .charset2upper = charset2upper, | |
151 | .owner = THIS_MODULE, | |
152 | }; | |
153 | ||
154 | static int __init init_nls_ascii(void) | |
155 | { | |
156 | return register_nls(&table); | |
157 | } | |
158 | ||
159 | static void __exit exit_nls_ascii(void) | |
160 | { | |
161 | unregister_nls(&table); | |
162 | } | |
163 | ||
164 | module_init(init_nls_ascii) | |
165 | module_exit(exit_nls_ascii) | |
166 | ||
167 | MODULE_LICENSE("Dual BSD/GPL"); |