fs/nls/nls_ascii.c

0001 /*
0002  * linux/fs/nls/nls_ascii.c
0003  *
0004  * Charset ascii translation tables.
0005  * Generated automatically from the Unicode and charset
0006  * tables from the Unicode Organization (www.unicode.org).
0007  * The Unicode to charset table has only exact mappings.
0008  */
0009
0010 #include <linux/module.h>
0011 #include <linux/kernel.h>
0012 #include <linux/string.h>
0013 #include <linux/nls.h>
0014 #include <linux/errno.h>
0015
0016 static const wchar_t charset2uni[256] = {
0017     /* 0x00*/
0018     0x0000, 0x0001, 0x0002, 0x0003,
0019     0x0004, 0x0005, 0x0006, 0x0007,
0020     0x0008, 0x0009, 0x000a, 0x000b,
0021     0x000c, 0x000d, 0x000e, 0x000f,
0022     /* 0x10*/
0023     0x0010, 0x0011, 0x0012, 0x0013,
0024     0x0014, 0x0015, 0x0016, 0x0017,
0025     0x0018, 0x0019, 0x001a, 0x001b,
0026     0x001c, 0x001d, 0x001e, 0x001f,
0027     /* 0x20*/
0028     0x0020, 0x0021, 0x0022, 0x0023,
0029     0x0024, 0x0025, 0x0026, 0x0027,
0030     0x0028, 0x0029, 0x002a, 0x002b,
0031     0x002c, 0x002d, 0x002e, 0x002f,
0032     /* 0x30*/
0033     0x0030, 0x0031, 0x0032, 0x0033,
0034     0x0034, 0x0035, 0x0036, 0x0037,
0035     0x0038, 0x0039, 0x003a, 0x003b,
0036     0x003c, 0x003d, 0x003e, 0x003f,
0037     /* 0x40*/
0038     0x0040, 0x0041, 0x0042, 0x0043,
0039     0x0044, 0x0045, 0x0046, 0x0047,
0040     0x0048, 0x0049, 0x004a, 0x004b,
0041     0x004c, 0x004d, 0x004e, 0x004f,
0042     /* 0x50*/
0043     0x0050, 0x0051, 0x0052, 0x0053,
0044     0x0054, 0x0055, 0x0056, 0x0057,
0045     0x0058, 0x0059, 0x005a, 0x005b,
0046     0x005c, 0x005d, 0x005e, 0x005f,
0047     /* 0x60*/
0048     0x0060, 0x0061, 0x0062, 0x0063,
0049     0x0064, 0x0065, 0x0066, 0x0067,
0050     0x0068, 0x0069, 0x006a, 0x006b,
0051     0x006c, 0x006d, 0x006e, 0x006f,
0052     /* 0x70*/
0053     0x0070, 0x0071, 0x0072, 0x0073,
0054     0x0074, 0x0075, 0x0076, 0x0077,
0055     0x0078, 0x0079, 0x007a, 0x007b,
0056     0x007c, 0x007d, 0x007e, 0x007f,
0057 };
0058
0059 static const unsigned char page00[256] = {
0060     0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, /* 0x00-0x07 */
0061     0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, /* 0x08-0x0f */
0062     0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, /* 0x10-0x17 */
0063     0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f, /* 0x18-0x1f */
0064     0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, /* 0x20-0x27 */
0065     0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f, /* 0x28-0x2f */
0066     0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, /* 0x30-0x37 */
0067     0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e, 0x3f, /* 0x38-0x3f */
0068     0x40, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, /* 0x40-0x47 */
0069     0x48, 0x49, 0x4a, 0x4b, 0x4c, 0x4d, 0x4e, 0x4f, /* 0x48-0x4f */
0070     0x50, 0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57, /* 0x50-0x57 */
0071     0x58, 0x59, 0x5a, 0x5b, 0x5c, 0x5d, 0x5e, 0x5f, /* 0x58-0x5f */
0072     0x60, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67, /* 0x60-0x67 */
0073     0x68, 0x69, 0x6a, 0x6b, 0x6c, 0x6d, 0x6e, 0x6f, /* 0x68-0x6f */
0074     0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77, /* 0x70-0x77 */
0075     0x78, 0x79, 0x7a, 0x7b, 0x7c, 0x7d, 0x7e, 0x7f, /* 0x78-0x7f */
0076 };
0077
0078 static const unsigned char *const page_uni2charset[256] = {
0079     page00,
0080 };
0081
0082 static const unsigned char charset2lower[256] = {
0083     0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, /* 0x00-0x07 */
0084     0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, /* 0x08-0x0f */
0085     0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, /* 0x10-0x17 */
0086     0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f, /* 0x18-0x1f */
0087     0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, /* 0x20-0x27 */
0088     0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f, /* 0x28-0x2f */
0089     0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, /* 0x30-0x37 */
0090     0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e, 0x3f, /* 0x38-0x3f */
0091     0x40, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67, /* 0x40-0x47 */
0092     0x68, 0x69, 0x6a, 0x6b, 0x6c, 0x6d, 0x6e, 0x6f, /* 0x48-0x4f */
0093     0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77, /* 0x50-0x57 */
0094     0x78, 0x79, 0x7a, 0x5b, 0x5c, 0x5d, 0x5e, 0x5f, /* 0x58-0x5f */
0095     0x60, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67, /* 0x60-0x67 */
0096     0x68, 0x69, 0x6a, 0x6b, 0x6c, 0x6d, 0x6e, 0x6f, /* 0x68-0x6f */
0097     0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77, /* 0x70-0x77 */
0098     0x78, 0x79, 0x7a, 0x7b, 0x7c, 0x7d, 0x7e, 0x7f, /* 0x78-0x7f */
0099 };
0100
0101 static const unsigned char charset2upper[256] = {
0102     0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, /* 0x00-0x07 */
0103     0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, /* 0x08-0x0f */
0104     0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, /* 0x10-0x17 */
0105     0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f, /* 0x18-0x1f */
0106     0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, /* 0x20-0x27 */
0107     0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f, /* 0x28-0x2f */
0108     0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, /* 0x30-0x37 */
0109     0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e, 0x3f, /* 0x38-0x3f */
0110     0x40, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, /* 0x40-0x47 */
0111     0x48, 0x49, 0x4a, 0x4b, 0x4c, 0x4d, 0x4e, 0x4f, /* 0x48-0x4f */
0112     0x50, 0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57, /* 0x50-0x57 */
0113     0x58, 0x59, 0x5a, 0x5b, 0x5c, 0x5d, 0x5e, 0x5f, /* 0x58-0x5f */
0114     0x60, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, /* 0x60-0x67 */
0115     0x48, 0x49, 0x4a, 0x4b, 0x4c, 0x4d, 0x4e, 0x4f, /* 0x68-0x6f */
0116     0x50, 0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57, /* 0x70-0x77 */
0117     0x58, 0x59, 0x5a, 0x7b, 0x7c, 0x7d, 0x7e, 0x7f, /* 0x78-0x7f */
0118 };
0119
0120 static int uni2char(wchar_t uni, unsigned char *out, int boundlen)
0121 {
0122     const unsigned char *uni2charset;
0123     unsigned char cl = uni & 0x00ff;
0124     unsigned char ch = (uni & 0xff00) >> 8;
0125
0126     if (boundlen <= 0)
0127         return -ENAMETOOLONG;
0128
0129     uni2charset = page_uni2charset[ch];
0130     if (uni2charset && uni2charset[cl])
0131         out[0] = uni2charset[cl];
0132     else
0133         return -EINVAL;
0134     return 1;
0135 }
0136
0137 static int char2uni(const unsigned char *rawstring, int boundlen, wchar_t *uni)
0138 {
0139     *uni = charset2uni[*rawstring];
0140     if (*uni == 0x0000)
0141         return -EINVAL;
0142     return 1;
0143 }
0144
0145 static struct nls_table table = {
0146     .charset    = "ascii",
0147     .uni2char   = uni2char,
0148     .char2uni   = char2uni,
0149     .charset2lower  = charset2lower,
0150     .charset2upper  = charset2upper,
0151 };
0152
0153 static int __init init_nls_ascii(void)
0154 {
0155     return register_nls(&table);
0156 }
0157
0158 static void __exit exit_nls_ascii(void)
0159 {
0160     unregister_nls(&table);
0161 }
0162
0163 module_init(init_nls_ascii)
0164 module_exit(exit_nls_ascii)
0165
0166 MODULE_LICENSE("Dual BSD/GPL");