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[patch/libiberty] IS_ABSOLUTE_PATH to handle both DOS and POSIX p ath styles

Resending this patch with libiberty in the subject line, as per:

This patch introduces new IS_DIR_SEPARATOR_? And IS_ABSOLUTE_PATH_? Macros.

Old macros IS_DIR_SEPARATOR and IS_ABSOLUTE_PATH continue to be configured
host dependent.

Please see for details on
why this patch.

Aleksandar Ristovski
QNX Software Systems

2008-01-04  Aleksandar Ristovski  <>

        * filenames.h (IS_DIR_SEPARATOR_DOS): New macro.
        (IS_ABSOLUTE_PATH_DOS): New macro.
        (IS_DIR_SEPARATOR_X): New macro.
        (IS_ABSOLUTE_PATH_X): New macro.
        (IS_DIR_SEPARATOR_ANY): New macro.
        (IS_ABSOLUTE_PATH_ANY): New macro.

Index: include/filenames.h
RCS file: /cvs/src/src/include/filenames.h,v
retrieving revision 1.4
diff -u -3 -p -r1.4 filenames.h
--- include/filenames.h	29 Mar 2007 21:03:43 -0000	1.4
+++ include/filenames.h	4 Jan 2008 19:22:02 -0000
@@ -26,6 +26,23 @@ Foundation, Inc., 51 Franklin Street - F
 #ifndef FILENAMES_H
 #define FILENAMES_H
+/* For DOS style paths. Note that these macros do not recognize
+  path starting with '/' as an absolute path.  */
+#define IS_DIR_SEPARATOR_DOS(c)	  ((c) == '/' || (c) == '\\')
+#define IS_ABSOLUTE_PATH_DOS(f)	  (((f)[0]) && ((f)[1] == ':'))
+/* For POSIX style paths.  */
+#define IS_DIR_SEPARATOR_X(c)	  ((c) == '/')
+#define IS_ABSOLUTE_PATH_X(f)	  (IS_DIR_SEPARATOR_X((f)[0]))
+/* Universal macros, to be used on paths that could be either
+   POSIX or DOS.  */
 #if defined(__MSDOS__) || defined(_WIN32) || defined(__OS2__) || defined

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