/contrib/cvs/lib/fncase.c

https://bitbucket.org/freebsd/freebsd-head/ · C · 155 lines · 115 code · 11 blank · 29 comment · 15 complexity · 414586770334095e9f67b3e8d8ffca87 MD5 · raw file

  1. /* fncase.c -- CVS support for case insensitive file systems.
  2. Jim Blandy <jimb@cyclic.com>
  3. This file is part of GNU CVS.
  4. GNU CVS is free software; you can redistribute it and/or modify it
  5. under the terms of the GNU General Public License as published by the
  6. Free Software Foundation; either version 2, or (at your option) any
  7. later version.
  8. This program is distributed in the hope that it will be useful,
  9. but WITHOUT ANY WARRANTY; without even the implied warranty of
  10. MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  11. GNU General Public License for more details. */
  12. #ifdef HAVE_CONFIG_H
  13. #include "config.h"
  14. #endif
  15. #include "system.h"
  16. /* The equivalence class mapping for filenames.
  17. Windows NT filenames are case-insensitive, but case-preserving.
  18. Both / and \ are path element separators.
  19. Thus, this table maps both upper and lower case to lower case, and
  20. both / and \ to /. */
  21. #if 0
  22. main ()
  23. {
  24. int c;
  25. for (c = 0; c < 256; c++)
  26. {
  27. int t;
  28. if (c == '\\')
  29. t = '/';
  30. else
  31. t = tolower (c);
  32. if ((c & 0x7) == 0x0)
  33. printf (" ");
  34. printf ("0x%02x,", t);
  35. if ((c & 0x7) == 0x7)
  36. putchar ('\n');
  37. else if ((c & 0x7) == 0x3)
  38. putchar (' ');
  39. }
  40. }
  41. #endif
  42. /* Under Windows NT, filenames are case-insensitive but case-preserving,
  43. and both \ and / are path element separators. */
  44. unsigned char
  45. WNT_filename_classes[] =
  46. {
  47. 0x00,0x01,0x02,0x03, 0x04,0x05,0x06,0x07,
  48. 0x08,0x09,0x0a,0x0b, 0x0c,0x0d,0x0e,0x0f,
  49. 0x10,0x11,0x12,0x13, 0x14,0x15,0x16,0x17,
  50. 0x18,0x19,0x1a,0x1b, 0x1c,0x1d,0x1e,0x1f,
  51. 0x20,0x21,0x22,0x23, 0x24,0x25,0x26,0x27,
  52. 0x28,0x29,0x2a,0x2b, 0x2c,0x2d,0x2e,0x2f,
  53. 0x30,0x31,0x32,0x33, 0x34,0x35,0x36,0x37,
  54. 0x38,0x39,0x3a,0x3b, 0x3c,0x3d,0x3e,0x3f,
  55. 0x40,0x61,0x62,0x63, 0x64,0x65,0x66,0x67,
  56. 0x68,0x69,0x6a,0x6b, 0x6c,0x6d,0x6e,0x6f,
  57. 0x70,0x71,0x72,0x73, 0x74,0x75,0x76,0x77,
  58. 0x78,0x79,0x7a,0x5b, 0x2f,0x5d,0x5e,0x5f,
  59. 0x60,0x61,0x62,0x63, 0x64,0x65,0x66,0x67,
  60. 0x68,0x69,0x6a,0x6b, 0x6c,0x6d,0x6e,0x6f,
  61. 0x70,0x71,0x72,0x73, 0x74,0x75,0x76,0x77,
  62. 0x78,0x79,0x7a,0x7b, 0x7c,0x7d,0x7e,0x7f,
  63. 0x80,0x81,0x82,0x83, 0x84,0x85,0x86,0x87,
  64. 0x88,0x89,0x8a,0x8b, 0x8c,0x8d,0x8e,0x8f,
  65. 0x90,0x91,0x92,0x93, 0x94,0x95,0x96,0x97,
  66. 0x98,0x99,0x9a,0x9b, 0x9c,0x9d,0x9e,0x9f,
  67. 0xa0,0xa1,0xa2,0xa3, 0xa4,0xa5,0xa6,0xa7,
  68. 0xa8,0xa9,0xaa,0xab, 0xac,0xad,0xae,0xaf,
  69. 0xb0,0xb1,0xb2,0xb3, 0xb4,0xb5,0xb6,0xb7,
  70. 0xb8,0xb9,0xba,0xbb, 0xbc,0xbd,0xbe,0xbf,
  71. 0xc0,0xc1,0xc2,0xc3, 0xc4,0xc5,0xc6,0xc7,
  72. 0xc8,0xc9,0xca,0xcb, 0xcc,0xcd,0xce,0xcf,
  73. 0xd0,0xd1,0xd2,0xd3, 0xd4,0xd5,0xd6,0xd7,
  74. 0xd8,0xd9,0xda,0xdb, 0xdc,0xdd,0xde,0xdf,
  75. 0xe0,0xe1,0xe2,0xe3, 0xe4,0xe5,0xe6,0xe7,
  76. 0xe8,0xe9,0xea,0xeb, 0xec,0xed,0xee,0xef,
  77. 0xf0,0xf1,0xf2,0xf3, 0xf4,0xf5,0xf6,0xf7,
  78. 0xf8,0xf9,0xfa,0xfb, 0xfc,0xfd,0xfe,0xff,
  79. };
  80. /* Same as WNT_filename_classes, but do not fold `\' into `/'. */
  81. unsigned char
  82. OSX_filename_classes[] =
  83. {
  84. 0x00,0x01,0x02,0x03, 0x04,0x05,0x06,0x07,
  85. 0x08,0x09,0x0a,0x0b, 0x0c,0x0d,0x0e,0x0f,
  86. 0x10,0x11,0x12,0x13, 0x14,0x15,0x16,0x17,
  87. 0x18,0x19,0x1a,0x1b, 0x1c,0x1d,0x1e,0x1f,
  88. 0x20,0x21,0x22,0x23, 0x24,0x25,0x26,0x27,
  89. 0x28,0x29,0x2a,0x2b, 0x2c,0x2d,0x2e,0x2f,
  90. 0x30,0x31,0x32,0x33, 0x34,0x35,0x36,0x37,
  91. 0x38,0x39,0x3a,0x3b, 0x3c,0x3d,0x3e,0x3f,
  92. 0x40,0x61,0x62,0x63, 0x64,0x65,0x66,0x67,
  93. 0x68,0x69,0x6a,0x6b, 0x6c,0x6d,0x6e,0x6f,
  94. 0x70,0x71,0x72,0x73, 0x74,0x75,0x76,0x77,
  95. 0x78,0x79,0x7a,0x5b, 0x5c,0x5d,0x5e,0x5f,
  96. 0x60,0x61,0x62,0x63, 0x64,0x65,0x66,0x67,
  97. 0x68,0x69,0x6a,0x6b, 0x6c,0x6d,0x6e,0x6f,
  98. 0x70,0x71,0x72,0x73, 0x74,0x75,0x76,0x77,
  99. 0x78,0x79,0x7a,0x7b, 0x7c,0x7d,0x7e,0x7f,
  100. 0x80,0x81,0x82,0x83, 0x84,0x85,0x86,0x87,
  101. 0x88,0x89,0x8a,0x8b, 0x8c,0x8d,0x8e,0x8f,
  102. 0x90,0x91,0x92,0x93, 0x94,0x95,0x96,0x97,
  103. 0x98,0x99,0x9a,0x9b, 0x9c,0x9d,0x9e,0x9f,
  104. 0xa0,0xa1,0xa2,0xa3, 0xa4,0xa5,0xa6,0xa7,
  105. 0xa8,0xa9,0xaa,0xab, 0xac,0xad,0xae,0xaf,
  106. 0xb0,0xb1,0xb2,0xb3, 0xb4,0xb5,0xb6,0xb7,
  107. 0xb8,0xb9,0xba,0xbb, 0xbc,0xbd,0xbe,0xbf,
  108. 0xc0,0xc1,0xc2,0xc3, 0xc4,0xc5,0xc6,0xc7,
  109. 0xc8,0xc9,0xca,0xcb, 0xcc,0xcd,0xce,0xcf,
  110. 0xd0,0xd1,0xd2,0xd3, 0xd4,0xd5,0xd6,0xd7,
  111. 0xd8,0xd9,0xda,0xdb, 0xdc,0xdd,0xde,0xdf,
  112. 0xe0,0xe1,0xe2,0xe3, 0xe4,0xe5,0xe6,0xe7,
  113. 0xe8,0xe9,0xea,0xeb, 0xec,0xed,0xee,0xef,
  114. 0xf0,0xf1,0xf2,0xf3, 0xf4,0xf5,0xf6,0xf7,
  115. 0xf8,0xf9,0xfa,0xfb, 0xfc,0xfd,0xfe,0xff,
  116. };
  117. /* Like strcmp, but with the appropriate tweaks for file names.
  118. Under Windows NT, filenames are case-insensitive but case-preserving,
  119. and both \ and / are path element separators. Under Mac OS X, filenames
  120. are case-insensitive but case-preserving. */
  121. int
  122. fncmp (const char *n1, const char *n2)
  123. {
  124. while (*n1 && *n2
  125. && (FOLD_FN_CHAR(*n1)
  126. == FOLD_FN_CHAR(*n2)))
  127. n1++, n2++;
  128. return (FOLD_FN_CHAR(*n1) - FOLD_FN_CHAR(*n2));
  129. }
  130. /* Fold characters in FILENAME to their canonical forms.
  131. If FOLD_FN_CHAR is not #defined, the system provides a default
  132. definition for this. */
  133. void
  134. fnfold (char *filename)
  135. {
  136. while (*filename)
  137. {
  138. *filename = FOLD_FN_CHAR (*filename);
  139. filename++;
  140. }
  141. }