1 files changed, 29 insertions, 0 deletions
diff --git a/libbb/concat_path_file.c b/libbb/concat_path_file.c
new file mode 100644
index 0000000..fb53354
--- /dev/null
+++ b/libbb/concat_path_file.c
@@ -0,0 +1,29 @@
+/* vi: set sw=4 ts=4: */
+/*
+ * Utility routines.
+ *
+ * Copyright (C) many different people.
+ * If you wrote this, please acknowledge your work.
+ *
+ * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
+ */
+
+/* Concatenate path and filename to new allocated buffer.
+ * Add '/' only as needed (no duplicate // are produced).
+ * If path is NULL, it is assumed to be "/".
+ * filename should not be NULL.
+ */
+
+#include "libbb.h"
+
+char* FAST_FUNC concat_path_file(const char *path, const char *filename)
+{
+	char *lc;
+
+	if (!path)
+		path = "";
+	lc = last_char_is(path, '/');
+	while (*filename == '/')
+		filename++;
+	return xasprintf("%s%s%s", path, (lc==NULL ? "/" : ""), filename);
+}