From 2420023b74d843e4a31c356ab106ac88fbb4b822 Mon Sep 17 00:00:00 2001
From: Maximilian Wilhelm <max@sdn.clinic>
Date: Tue, 28 Jul 2020 22:37:41 +0200
Subject: [PATCH] Add comparator wrapper and type cast values properly.

Signed-off-by: Maximilian Wilhelm <max@sdn.clinic>
---
 Makefile             |  1 +
 libifupdown/compar.c | 26 ++++++++++++++++++++++++++
 libifupdown/compar.h | 21 +++++++++++++++++++++
 3 files changed, 48 insertions(+)
 create mode 100644 libifupdown/compar.c
 create mode 100644 libifupdown/compar.h

diff --git a/Makefile b/Makefile
index ccd016e..d0eca05 100644
--- a/Makefile
+++ b/Makefile
@@ -25,6 +25,7 @@ CPPFLAGS += -DEXECUTOR_PATH=\"${EXECUTOR_PATH}\"
 
 
 LIBIFUPDOWN_SRC = \
+	libifupdown/compar.c \
 	libifupdown/list.c \
 	libifupdown/dict.c \
 	libifupdown/interface.c \
diff --git a/libifupdown/compar.c b/libifupdown/compar.c
new file mode 100644
index 0000000..8705404
--- /dev/null
+++ b/libifupdown/compar.c
@@ -0,0 +1,26 @@
+/*
+ * libifupdown/compar.c
+ * Purpose: comparators
+ *
+ * Copyright (c) 2020 Maximilian Wilhelm <max@sdn.clinic>
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * This software is provided 'as is' and without any warranty, express or
+ * implied.  In no event shall the authors be liable for any damages arising
+ * from the use of this software.
+ */
+
+#include <string.h>
+#include "libifupdown/compar.h"
+
+int
+compar_str (const void *a, const void *b)
+{
+	const char *str_a = (const char *)a;
+	const char *str_b = (const char *)b;
+
+	return strcmp (str_a, str_b);
+}
diff --git a/libifupdown/compar.h b/libifupdown/compar.h
new file mode 100644
index 0000000..8652a26
--- /dev/null
+++ b/libifupdown/compar.h
@@ -0,0 +1,21 @@
+/*
+ * libifupdown/compar.h
+ * Purpose: Comparators
+ *
+ * Copyright (c) 2020 Maximilian Wilhelm <max@sdn.clinic>
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * This software is provided 'as is' and without any warranty, express or
+ * implied.  In no event shall the authors be liable for any damages arising
+ * from the use of this software.
+ */
+
+#ifndef LIBIFUPDOWN_COMPAR_H__GUARD
+#define LIBIFUPDOWN_COMPAR_H__GUARD
+
+int compar_str (const void *a, const void *b);
+
+#endif