win32: move is_absolute_path()

Make is_absolute_path() a function rather than a macro and move it
from ash.c into mingw.c.

1 files changed, 9 insertions, 0 deletions

diff --git a/win32/mingw.c b/win32/mingw.c
index 6e1dc6a9a..c9b72ae98 100644
--- a/win32/mingw.c
+++ b/win32/mingw.c
@@ -1922,3 +1922,12 @@ int has_path(const char *file)
         return strchr(file, '/') || strchr(file, '\\') ||
                                 has_dos_drive_prefix(file);
 }
+
+/* This function is misnamed.  It's actually a test for 'is not a path
+ * relative to the current working directory'.  On Unix this is the
+ * same as 'is an absolute path' but Windows also has paths relative to
+ * current root and relative to current directory of another drive. */
+int is_absolute_path(const char *path)
+{
+        return path[0] == '/' || path[0] == '\\' || has_dos_drive_prefix(path);
+}