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-rw-r--r--lib/isc/region.c38
1 files changed, 38 insertions, 0 deletions
diff --git a/lib/isc/region.c b/lib/isc/region.c
new file mode 100644
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+++ b/lib/isc/region.c
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+/*
+ * Copyright (C) Internet Systems Consortium, Inc. ("ISC")
+ *
+ * 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 http://mozilla.org/MPL/2.0/.
+ *
+ * See the COPYRIGHT file distributed with this work for additional
+ * information regarding copyright ownership.
+ */
+
+
+/*! \file */
+
+#include <config.h>
+
+#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);
+}