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  1. /* Macros for taking apart, interpreting and processing file names.
  2.  
  3.    These are here because some non-Posix (a.k.a. DOSish) systems have
  4.    drive letter brain-damage at the beginning of an absolute file name,
  5.    use forward- and back-slash in path names interchangeably, and
  6.    some of them have case-insensitive file names.
  7.  
  8.    Copyright (C) 2000-2015 Free Software Foundation, Inc.
  9.  
  10. This file is part of BFD, the Binary File Descriptor library.
  11.  
  12. This program is free software; you can redistribute it and/or modify
  13. it under the terms of the GNU General Public License as published by
  14. the Free Software Foundation; either version 2 of the License, or
  15. (at your option) any later version.
  16.  
  17. This program is distributed in the hope that it will be useful,
  18. but WITHOUT ANY WARRANTY; without even the implied warranty of
  19. MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  20. GNU General Public License for more details.
  21.  
  22. You should have received a copy of the GNU General Public License
  23. along with this program; if not, write to the Free Software
  24. Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA.  */
  25.  
  26. #ifndef FILENAMES_H
  27. #define FILENAMES_H
  28.  
  29. #include "hashtab.h" /* for hashval_t */
  30.  
  31. #ifdef __cplusplus
  32. extern "C" {
  33. #endif
  34.  
  35. #if defined(__MSDOS__) || defined(_WIN32) || defined(__OS2__) || defined (__CYGWIN__)
  36. #  ifndef HAVE_DOS_BASED_FILE_SYSTEM
  37. #    define HAVE_DOS_BASED_FILE_SYSTEM 1
  38. #  endif
  39. #  ifndef HAVE_CASE_INSENSITIVE_FILE_SYSTEM
  40. #    define HAVE_CASE_INSENSITIVE_FILE_SYSTEM 1
  41. #  endif
  42. #  define HAS_DRIVE_SPEC(f) HAS_DOS_DRIVE_SPEC (f)
  43. #  define IS_DIR_SEPARATOR(c) IS_DOS_DIR_SEPARATOR (c)
  44. #  define IS_ABSOLUTE_PATH(f) IS_DOS_ABSOLUTE_PATH (f)
  45. #else /* not DOSish */
  46. #  if defined(__APPLE__)
  47. #    ifndef HAVE_CASE_INSENSITIVE_FILE_SYSTEM
  48. #      define HAVE_CASE_INSENSITIVE_FILE_SYSTEM 1
  49. #    endif
  50. #  endif /* __APPLE__ */
  51. #  define HAS_DRIVE_SPEC(f) (0)
  52. #  define IS_DIR_SEPARATOR(c) IS_UNIX_DIR_SEPARATOR (c)
  53. #  define IS_ABSOLUTE_PATH(f) IS_UNIX_ABSOLUTE_PATH (f)
  54. #endif
  55.  
  56. #define IS_DIR_SEPARATOR_1(dos_based, c)                                \
  57.   (((c) == '/')                                                         \
  58.    || (((c) == '\\') && (dos_based)))
  59.  
  60. #define HAS_DRIVE_SPEC_1(dos_based, f)                  \
  61.   ((f)[0] && ((f)[1] == ':') && (dos_based))
  62.  
  63. /* Remove the drive spec from F, assuming HAS_DRIVE_SPEC (f).
  64.    The result is a pointer to the remainder of F.  */
  65. #define STRIP_DRIVE_SPEC(f)     ((f) + 2)
  66.  
  67. #define IS_DOS_DIR_SEPARATOR(c) IS_DIR_SEPARATOR_1 (1, c)
  68. #define IS_DOS_ABSOLUTE_PATH(f) IS_ABSOLUTE_PATH_1 (1, f)
  69. #define HAS_DOS_DRIVE_SPEC(f) HAS_DRIVE_SPEC_1 (1, f)
  70.  
  71. #define IS_UNIX_DIR_SEPARATOR(c) IS_DIR_SEPARATOR_1 (0, c)
  72. #define IS_UNIX_ABSOLUTE_PATH(f) IS_ABSOLUTE_PATH_1 (0, f)
  73.  
  74. /* Note that when DOS_BASED is true, IS_ABSOLUTE_PATH accepts d:foo as
  75.    well, although it is only semi-absolute.  This is because the users
  76.    of IS_ABSOLUTE_PATH want to know whether to prepend the current
  77.    working directory to a file name, which should not be done with a
  78.    name like d:foo.  */
  79. #define IS_ABSOLUTE_PATH_1(dos_based, f)                 \
  80.   (IS_DIR_SEPARATOR_1 (dos_based, (f)[0])                \
  81.    || HAS_DRIVE_SPEC_1 (dos_based, f))
  82.  
  83. extern int filename_cmp (const char *s1, const char *s2);
  84. #define FILENAME_CMP(s1, s2)    filename_cmp(s1, s2)
  85.  
  86. extern int filename_ncmp (const char *s1, const char *s2,
  87.                           size_t n);
  88.  
  89. extern hashval_t filename_hash (const void *s);
  90.  
  91. extern int filename_eq (const void *s1, const void *s2);
  92.  
  93. extern int canonical_filename_eq (const char *a, const char *b);
  94.  
  95. #ifdef __cplusplus
  96. }
  97. #endif
  98.  
  99. #endif /* FILENAMES_H */
  100.