* By making this a macro we avoid needing to include path.c in libpq.
*/
#ifndef WIN32
+#define IS_DIR_SEP(ch) ((ch) == '/')
+
#define is_absolute_path(filename) \
( \
- ((filename)[0] == '/') \
+ IS_DIR_SEP((filename)[0]) \
)
#else
+#define IS_DIR_SEP(ch) ((ch) == '/' || (ch) == '\\')
+
+/*
+ * On Win32, a drive letter _not_ followed by a slash, e.g. 'E:abc', is
+ * relative to the cwd on that drive, or the drive's root directory
+ * if that drive has no cwd. Because the path itself cannot tell us
+ * which is the case, we have to assume the worst, i.e. that it is not
+ * absolute; this check is done by IS_DIR_SEP(filename[2]).
+ */
#define is_absolute_path(filename) \
( \
- ((filename)[0] == '/') || \
- (filename)[0] == '\\' || \
+ IS_DIR_SEP((filename)[0]) || \
(isalpha((unsigned char) ((filename)[0])) && (filename)[1] == ':' && \
- ((filename)[2] == '\\' || (filename)[2] == '/')) \
+ IS_DIR_SEP((filename)[2])) \
)
#endif
#ifndef WIN32
-#define IS_DIR_SEP(ch) ((ch) == '/')
-#else
-#define IS_DIR_SEP(ch) ((ch) == '/' || (ch) == '\\')
-#endif
-
-#ifndef WIN32
#define IS_PATH_VAR_SEP(ch) ((ch) == ':')
#else
#define IS_PATH_VAR_SEP(ch) ((ch) == ';')