/* Basic filename support macros.

   Copyright (C) 2001-2004, 2007-2018 Free Software Foundation, Inc.

   This program is free software: you can redistribute it and/or modify

   it under the terms of the GNU General Public License as published by

   the Free Software Foundation; either version 3 of the License, or

   (at your option) any later version.

   This program is distributed in the hope that it will be useful,

   but WITHOUT ANY WARRANTY; without even the implied warranty of

   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License

   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */

#ifndef _FILENAME_H

#define _FILENAME_H

#ifdef __cplusplus

extern "C" {

#endif

/* Pathname support.

   ISSLASH(C)           tests whether C is a directory separator character.

   IS_ABSOLUTE_PATH(P)  tests whether P is an absolute path.  If it is not,

                        it may be concatenated to a directory pathname.

   IS_PATH_WITH_DIR(P)  tests whether P contains a directory specification.

 */

#if defined _WIN32 || defined __CYGWIN__ || defined __EMX__ || defined __DJGPP__

  /* Native Windows, Cygwin, OS/2, DOS */

# define ISSLASH(C) ((C) == '/' || (C) == '\\')

# define HAS_DEVICE(P) \

    ((((P)[0] >= 'A' && (P)[0] <= 'Z') || ((P)[0] >= 'a' && (P)[0] <= 'z')) \

     && (P)[1] == ':')

# define IS_ABSOLUTE_PATH(P) (ISSLASH ((P)[0]) || HAS_DEVICE (P))

# define IS_PATH_WITH_DIR(P) \

    (strchr (P, '/') != NULL || strchr (P, '\\') != NULL || HAS_DEVICE (P))

# define FILE_SYSTEM_PREFIX_LEN(P) (HAS_DEVICE (P) ? 2 : 0)

#else

  /* Unix */

# define ISSLASH(C) ((C) == '/')

# define IS_ABSOLUTE_PATH(P) ISSLASH ((P)[0])

# define IS_PATH_WITH_DIR(P) (strchr (P, '/') != NULL)

# define FILE_SYSTEM_PREFIX_LEN(P) 0

#endif

#ifdef __cplusplus

}

#endif

#endif /* _FILENAME_H */