Added dirname()

[people/dverkamp/gpxe.git] / src / core / basename.c

diff --git a/src/core/basename.c b/src/core/basename.c
index f50b715..7340c0d 100644 (file)
--- a/src/core/basename.c
+++ b/src/core/basename.c
@@ -38,3 +38,25 @@ char * basename ( char *path ) {
        basename = strrchr ( path, '/' );
        return ( basename ? ( basename + 1 ) : path );
 }
+
+/**
+ * Return directory name from path
+ *
+ * @v path             Full path
+ * @ret dirname                Directory name
+ *
+ * Note that this function may modify its argument.
+ */
+char * dirname ( char *path ) {
+       char *separator;
+
+       separator = strrchr ( path, '/' );
+       if ( separator == path ) {
+               return "/";
+       } else if ( separator ) {
+               *separator = 0;
+               return path;
+       } else {
+               return ".";
+       }
+}