subversion-1.9.7HEADsubversion-1.9.7master

1 files changed, 91 insertions, 0 deletions

diff --git a/subversion/libsvn_subr/fnv1a.h b/subversion/libsvn_subr/fnv1a.h
new file mode 100644
index 0000000..4bb0b12
--- /dev/null
+++ b/subversion/libsvn_subr/fnv1a.h
@@ -0,0 +1,91 @@
+/*
+ * fnv1a.h :  routines to create checksums derived from FNV-1a
+ *
+ * ====================================================================
+ *    Licensed to the Apache Software Foundation (ASF) under one
+ *    or more contributor license agreements.  See the NOTICE file
+ *    distributed with this work for additional information
+ *    regarding copyright ownership.  The ASF licenses this file
+ *    to you under the Apache License, Version 2.0 (the
+ *    "License"); you may not use this file except in compliance
+ *    with the License.  You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *    Unless required by applicable law or agreed to in writing,
+ *    software distributed under the License is distributed on an
+ *    "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ *    KIND, either express or implied.  See the License for the
+ *    specific language governing permissions and limitations
+ *    under the License.
+ * ====================================================================
+ */
+
+#ifndef SVN_LIBSVN_SUBR_FNV1A_H
+#define SVN_LIBSVN_SUBR_FNV1A_H
+
+#include <apr_pools.h>
+
+#include "svn_types.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif /* __cplusplus */
+
+/* Opaque FNV-1a checksum creation context type.
+ */
+typedef struct svn_fnv1a_32__context_t svn_fnv1a_32__context_t;
+
+/* Return a new FNV-1a checksum creation context allocated in POOL.
+ */
+svn_fnv1a_32__context_t *
+svn_fnv1a_32__context_create(apr_pool_t *pool);
+
+/* Feed LEN bytes from DATA into the FNV-1a checksum creation CONTEXT.
+ */
+void
+svn_fnv1a_32__update(svn_fnv1a_32__context_t *context,
+                     const void *data,
+                     apr_size_t len);
+
+/* Return the FNV-1a checksum over all data fed into  CONTEXT.
+ */
+apr_uint32_t
+svn_fnv1a_32__finalize(svn_fnv1a_32__context_t *context);
+
+
+/* Opaque modified FNV-1a checksum creation context type.
+ */
+typedef struct svn_fnv1a_32x4__context_t svn_fnv1a_32x4__context_t;
+
+/* Return a new modified FNV-1a checksum creation context allocated in POOL.
+ */
+svn_fnv1a_32x4__context_t *
+svn_fnv1a_32x4__context_create(apr_pool_t *pool);
+
+/* Feed LEN bytes from DATA into the modified FNV-1a checksum creation
+ * CONTEXT.
+ */
+void
+svn_fnv1a_32x4__update(svn_fnv1a_32x4__context_t *context,
+                       const void *data,
+                       apr_size_t len);
+
+/* Return the modified FNV-1a checksum over all data fed into  CONTEXT.
+ */
+apr_uint32_t
+svn_fnv1a_32x4__finalize(svn_fnv1a_32x4__context_t *context);
+
+/* Set HASHES to the 4 partial hash sums produced by the modified FVN-1a
+ * over INPUT of LEN bytes.
+ */
+void
+svn__fnv1a_32x4_raw(apr_uint32_t hashes[4],
+                    const void *input,
+                    apr_size_t len);
+
+#ifdef __cplusplus
+}
+#endif /* __cplusplus */
+
+#endif /* SVN_LIBSVN_SUBR_FNV1A_H */