+2020-03-28 Bruno Haible <bruno@clisp.org>
+
+ filename: Copy some definitions from module 'dosname'.
+ * lib/filename.h: Include <string.h>, for IS_FILE_NAME_WITH_DIR.
+ (HAS_DEVICE): Document macro.
+ (FILE_SYSTEM_DRIVE_PREFIX_CAN_BE_RELATIVE): New macro.
+ (IS_ABSOLUTE_FILE_NAME): Consider
+ FILE_SYSTEM_DRIVE_PREFIX_CAN_BE_RELATIVE.
+ (IS_RELATIVE_FILE_NAME, IS_FILE_NAME_WITH_DIR): New macros.
+ (IS_ABSOLUTE_PATH, IS_PATH_WITH_DIR): Define as deprecated aliases.
+ * lib/relocatable.c (IS_FILE_NAME_WITH_DIR): Renamed from
+ IS_PATH_WITH_DIR.
+ (DllMain): Update.
+ * lib/progreloc.c (IS_FILE_NAME_WITH_DIR): Renamed from
+ IS_PATH_WITH_DIR.
+ (find_executable): Update.
+ * NEWS: Document the deprecations.
+
2020-03-25 Paul Eggert <eggert@cs.ucla.edu>
getopt-posix: port __GETOPT_PREFIX to macOS
You should have received a copy of the GNU General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>. */
+/* From Paul Eggert and Jim Meyering. */
+
#ifndef _FILENAME_H
#define _FILENAME_H
+#include <string.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.
+/* Filename support.
+ ISSLASH(C) tests whether C is a directory separator
+ character.
+ HAS_DEVICE(Filename) tests whether Filename contains a device
+ specification.
+ FILE_SYSTEM_PREFIX_LEN(Filename) length of the device specification
+ at the beginning of Filename,
+ index of the part consisting of
+ alternating components and slashes.
+ FILE_SYSTEM_DRIVE_PREFIX_CAN_BE_RELATIVE
+ 1 when a non-empty device specification
+ can be followed by an empty or relative
+ part,
+ 0 when a non-empty device specification
+ must be followed by a slash,
+ 0 when device specification don't exist.
+ IS_ABSOLUTE_FILE_NAME(Filename)
+ tests whether Filename is independent of
+ any notion of "current directory".
+ IS_RELATIVE_FILE_NAME(Filename)
+ tests whether Filename may be concatenated
+ to a directory filename.
+ Note: On native Windows, OS/2, DOS, "c:" is neither an absolute nor a
+ relative file name!
+ IS_FILE_NAME_WITH_DIR(Filename) tests whether Filename contains a device
+ or directory specification.
*/
-#if defined _WIN32 || defined __CYGWIN__ || defined __EMX__ || defined __DJGPP__
+#if defined _WIN32 || defined __CYGWIN__ \
+ || defined __EMX__ || defined __MSDOS__ || 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)
+ /* Internal macro: Tests whether a character is a drive letter. */
+# define _IS_DRIVE_LETTER(C) \
+ (((C) >= 'A' && (C) <= 'Z') || ((C) >= 'a' && (C) <= 'z'))
+ /* Help the compiler optimizing it. This assumes ASCII. */
+# undef _IS_DRIVE_LETTER
+# define _IS_DRIVE_LETTER(C) \
+ (((unsigned int) (C) | ('a' - 'A')) - 'a' <= 'z' - 'a')
+# define HAS_DEVICE(Filename) \
+ (_IS_DRIVE_LETTER ((Filename)[0]) && (Filename)[1] == ':')
+# define FILE_SYSTEM_PREFIX_LEN(Filename) (HAS_DEVICE (Filename) ? 2 : 0)
+# ifdef __CYGWIN__
+# define FILE_SYSTEM_DRIVE_PREFIX_CAN_BE_RELATIVE 0
+# else
+ /* On native Windows, OS/2, DOS, the system has the notion of a
+ "current directory" on each drive. */
+# define FILE_SYSTEM_DRIVE_PREFIX_CAN_BE_RELATIVE 1
+# endif
+# if FILE_SYSTEM_DRIVE_PREFIX_CAN_BE_RELATIVE
+# define IS_ABSOLUTE_FILE_NAME(Filename) \
+ ISSLASH ((Filename)[FILE_SYSTEM_PREFIX_LEN (Filename)])
+# else
+# define IS_ABSOLUTE_FILE_NAME(Filename) \
+ (ISSLASH ((Filename)[0]) || HAS_DEVICE (Filename))
+# endif
+# define IS_RELATIVE_FILE_NAME(Filename) \
+ (! (ISSLASH ((Filename)[0]) || HAS_DEVICE (Filename)))
+# define IS_FILE_NAME_WITH_DIR(Filename) \
+ (strchr ((Filename), '/') != NULL || strchr ((Filename), '\\') != NULL \
+ || HAS_DEVICE (Filename))
#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
+# define HAS_DEVICE(Filename) ((void) (Filename), 0)
+# define FILE_SYSTEM_PREFIX_LEN(Filename) ((void) (Filename), 0)
+# define FILE_SYSTEM_DRIVE_PREFIX_CAN_BE_RELATIVE 0
+# define IS_ABSOLUTE_FILE_NAME(Filename) ISSLASH ((Filename)[0])
+# define IS_RELATIVE_FILE_NAME(Filename) (! ISSLASH ((Filename)[0]))
+# define IS_FILE_NAME_WITH_DIR(Filename) (strchr ((Filename), '/') != NULL)
#endif
+/* Deprecated macros. For backward compatibility with old users of the
+ 'filename' module. */
+#define IS_ABSOLUTE_PATH IS_ABSOLUTE_FILE_NAME
+#define IS_PATH_WITH_DIR IS_FILE_NAME_WITH_DIR
+
#ifdef __cplusplus
}
extern char * canonicalize_file_name (const char *name);
/* Pathname support.
- ISSLASH(C) tests whether C is a directory separator character.
- IS_PATH_WITH_DIR(P) tests whether P contains a directory specification.
+ ISSLASH(C) tests whether C is a directory separator character.
+ IS_FILE_NAME_WITH_DIR(P) tests whether P contains a directory specification.
*/
#if (defined _WIN32 && !defined __CYGWIN__) || defined __EMX__ || defined __DJGPP__
/* Native Windows, OS/2, DOS */
# define HAS_DEVICE(P) \
((((P)[0] >= 'A' && (P)[0] <= 'Z') || ((P)[0] >= 'a' && (P)[0] <= 'z')) \
&& (P)[1] == ':')
-# define IS_PATH_WITH_DIR(P) \
+# define IS_FILE_NAME_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_PATH_WITH_DIR(P) (strchr (P, '/') != NULL)
+# define IS_FILE_NAME_WITH_DIR(P) (strchr (P, '/') != NULL)
# define FILE_SYSTEM_PREFIX_LEN(P) 0
#endif
int length = GetModuleFileName (NULL, location, sizeof (location));
if (length < 0)
return NULL;
- if (!IS_PATH_WITH_DIR (location))
+ if (!IS_FILE_NAME_WITH_DIR (location))
/* Shouldn't happen. */
return NULL;
return xstrdup (location);
#define true 1
/* Pathname support.
- ISSLASH(C) tests whether C is a directory separator character.
- IS_PATH_WITH_DIR(P) tests whether P contains a directory specification.
+ ISSLASH(C) tests whether C is a directory separator character.
+ IS_FILE_NAME_WITH_DIR(P) tests whether P contains a directory specification.
*/
#if (defined _WIN32 && !defined __CYGWIN__) || defined __EMX__ || defined __DJGPP__
/* Native Windows, OS/2, DOS */
# define HAS_DEVICE(P) \
((((P)[0] >= 'A' && (P)[0] <= 'Z') || ((P)[0] >= 'a' && (P)[0] <= 'z')) \
&& (P)[1] == ':')
-# define IS_PATH_WITH_DIR(P) \
+# define IS_FILE_NAME_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_PATH_WITH_DIR(P) (strchr (P, '/') != NULL)
+# define IS_FILE_NAME_WITH_DIR(P) (strchr (P, '/') != NULL)
# define FILE_SYSTEM_PREFIX_LEN(P) 0
#endif
/* Shouldn't happen. */
return FALSE;
- if (!IS_PATH_WITH_DIR (location))
+ if (!IS_FILE_NAME_WITH_DIR (location))
/* Shouldn't happen. */
return FALSE;