nls_ascii.c 5.7 KB

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