summaryrefslogtreecommitdiffstats
path: root/lib/isc/region.c
diff options
context:
space:
mode:
Diffstat (limited to '')
-rw-r--r--lib/isc/region.c39
1 files changed, 39 insertions, 0 deletions
diff --git a/lib/isc/region.c b/lib/isc/region.c
new file mode 100644
index 0000000..675f4ec
--- /dev/null
+++ b/lib/isc/region.c
@@ -0,0 +1,39 @@
+/*
+ * Copyright (C) Internet Systems Consortium, Inc. ("ISC")
+ *
+ * SPDX-License-Identifier: MPL-2.0
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, you can obtain one at https://mozilla.org/MPL/2.0/.
+ *
+ * See the COPYRIGHT file distributed with this work for additional
+ * information regarding copyright ownership.
+ */
+
+/*! \file */
+
+#include <stdlib.h>
+#include <string.h>
+
+#include <isc/region.h>
+#include <isc/util.h>
+
+int
+isc_region_compare(isc_region_t *r1, isc_region_t *r2) {
+ unsigned int l;
+ int result;
+
+ REQUIRE(r1 != NULL);
+ REQUIRE(r2 != NULL);
+
+ l = (r1->length < r2->length) ? r1->length : r2->length;
+
+ if ((result = memcmp(r1->base, r2->base, l)) != 0) {
+ return ((result < 0) ? -1 : 1);
+ } else {
+ return ((r1->length == r2->length) ? 0
+ : (r1->length < r2->length) ? -1
+ : 1);
+ }
+}