libifupdown: inline the tokenization functions

libifupdown/tokenize.h

@@ -0,0 +1,39 @@
+/*
+ * libifupdown/tokenize.h
+ * Purpose: tokenization helper
+ *
+ * Copyright (c) 2020 Ariadne Conill <ariadne@dereferenced.org>
+ *
+ * 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_TOKENIZE_H__GUARD
+#define LIBIFUPDOWN_TOKENIZE_H__GUARD
+
+#include <ctype.h>
+
+static inline char *
+lif_next_token(char **buf)
+{
+	char *out = *buf;
+
+	while (*out && isspace(*out))
+		out++;
+
+	char *end = out;
+	while (*end && !isspace(*end))
+		end++;
+
+	*end++ = '\0';
+	*buf = end;
+
+	return out;
+}
+
+#endif