1: /*  Take file names apart into directory and base names.
    2: 
    3:     Copyright (C) 1998, 2001, 2003-2006 Free Software Foundation, Inc.
    4: 
    5:     This program is free software; you can redistribute it and/or modify
    6:     it under the terms of the GNU General Public License as published by
    7:     the Free Software Foundation; either version 2, or (at your option)
    8:     any later version.
    9: 
   10:     This program is distributed in the hope that it will be useful,
   11:     but WITHOUT ANY WARRANTY; without even the implied warranty of
   12:     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   13:     GNU General Public License for more details.
   14: 
   15:     You should have received a copy of the GNU General Public License
   16:     along with this program; if not, write to the Free Software Foundation,
   17:     Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.  */
   18: 
   19: #ifndef DIRNAME_H_
   20: # define DIRNAME_H_ 1
   21: 
   22: # include <stdbool.h>
   23: # include <stddef.h>
   24: 
   25: # ifndef DIRECTORY_SEPARATOR
   26: #  define DIRECTORY_SEPARATOR '/'
   27: # endif
   28: 
   29: # ifndef ISSLASH
   30: #  define ISSLASH(C) ((C) == DIRECTORY_SEPARATOR)
   31: # endif
   32: 
   33: # ifndef FILE_SYSTEM_PREFIX_LEN
   34: #  if FILE_SYSTEM_ACCEPTS_DRIVE_LETTER_PREFIX
   35:     /* This internal macro assumes ASCII, but all hosts that support drive
   36:        letters use ASCII.  */
   37: #   define _IS_DRIVE_LETTER(c) (((unsigned int) (c) | ('a' - 'A')) - 'a' \
   38:                                 <= 'z' - 'a')
   39: #   define FILE_SYSTEM_PREFIX_LEN(Filename) \
   40:            (_IS_DRIVE_LETTER ((Filename)[0]) && (Filename)[1] == ':' ? 2 : 0)
   41: #  else
   42: #   define FILE_SYSTEM_PREFIX_LEN(Filename) 0
   43: #  endif
   44: # endif
   45: 
   46: # ifndef FILE_SYSTEM_DRIVE_PREFIX_CAN_BE_RELATIVE
   47: #  define FILE_SYSTEM_DRIVE_PREFIX_CAN_BE_RELATIVE 0
   48: # endif
   49: 
   50: # ifndef DOUBLE_SLASH_IS_DISTINCT_ROOT
   51: #  define DOUBLE_SLASH_IS_DISTINCT_ROOT 0
   52: # endif
   53: 
   54: # if FILE_SYSTEM_DRIVE_PREFIX_CAN_BE_RELATIVE
   55: #  define IS_ABSOLUTE_FILE_NAME(F) ISSLASH ((F)[FILE_SYSTEM_PREFIX_LEN (F)])
   56: # else
   57: #  define IS_ABSOLUTE_FILE_NAME(F) \
   58:           (ISSLASH ((F)[0]) || 0 < FILE_SYSTEM_PREFIX_LEN (F))
   59: # endif
   60: # define IS_RELATIVE_FILE_NAME(F) (! IS_ABSOLUTE_FILE_NAME (F))
   61: 
   62: char *base_name (char const *file);
   63: char *dir_name (char const *file);
   64: size_t base_len (char const *file);
   65: size_t dir_len (char const *file);
   66: char *last_component (char const *file);
   67: 
   68: bool strip_trailing_slashes (char *file);
   69: 
   70: #endif /* not DIRNAME_H_ */