1 files changed, 73 insertions, 0 deletions
diff --git a/src/libstrongswan/enum.c b/src/libstrongswan/enum.c
new file mode 100644
index 000000000..ade7c16a1
--- /dev/null
+++ b/src/libstrongswan/enum.c
@@ -0,0 +1,73 @@
+/**
+ * @file library.c
+ *
+ * @brief enum value to string conversion functions.
+ *
+ */
+
+/*
+ * Copyright (C) 2006 Martin Willi
+ * Hochschule fuer Technik Rapperswil
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * for more details.
+ */
+
+#include <stddef.h>
+#include <stdio.h>
+
+#include "enum.h"
+
+#include <printf_hook.h>
+
+/**
+ * get the name of an enum value in a enum_name_t list
+ */
+static char *enum_name(enum_name_t *e, int val)
+{
+	do
+	{
+		if (val >= e->first && val <= e->last)
+		{
+			return e->names[val - e->first];
+		}
+	}
+	while ((e = e->next));
+	return NULL;
+}
+
+/**
+ * output handler in printf() for enum names
+ */
+static int print_enum(FILE *stream, const struct printf_info *info,
+					  const void *const *args)
+{
+	enum_name_t *ed = *((enum_name_t**)(args[0]));
+	int val = *((int*)(args[1]));
+
+	char *name = enum_name(ed, val);
+
+	if (name == NULL)
+	{
+		return fprintf(stream, "(%d)", val);
+	}
+	else
+	{
+		return fprintf(stream, "%s", name);
+	}
+}
+
+/**
+ * register printf() handlers
+ */
+static void __attribute__ ((constructor))print_register()
+{
+	register_printf_function(PRINTF_ENUM, print_enum, arginfo_ptr_int);
+}