blob: 0d315a1c6d449ce566bc0842e20bcde6a05687fe (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
|
// Copyright 2008 Google Inc.
// Author: Lincoln Smith
//
// Licensed 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.
//
// A wrapper for the adler32() function from zlib. This can be replaced
// with another checksum implementation if desired.
#ifndef OPEN_VCDIFF_CHECKSUM_H_
#define OPEN_VCDIFF_CHECKSUM_H_
#include <config.h>
#include "zlib.h"
namespace open_vcdiff {
typedef uLong VCDChecksum;
const VCDChecksum kNoPartialChecksum = 0;
inline VCDChecksum ComputeAdler32(const char* buffer,
size_t size) {
return adler32(kNoPartialChecksum,
reinterpret_cast<const Bytef*>(buffer),
static_cast<uInt>(size));
}
inline VCDChecksum UpdateAdler32(VCDChecksum partial_checksum,
const char* buffer,
size_t size) {
return adler32(partial_checksum,
reinterpret_cast<const Bytef*>(buffer),
static_cast<uInt>(size));
}
} // namespace open_vcdiff
#endif // OPEN_VCDIFF_CHECKSUM_H_
|
