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
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
|
//
// $Id$
//
//
// Original author: Darren Kessner <darren@proteowizard.org>
//
// Copyright 2007 Spielberg Family Center for Applied Proteomics
// Cedars-Sinai Medical Center, Los Angeles, California 90048
//
// 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.
//
#ifndef _SHA1_OSTREAM_HPP_
#define _SHA1_OSTREAM_HPP_
#include "SHA1Calculator.hpp"
#include "boost/iostreams/filtering_stream.hpp"
#include "boost/iostreams/filter/symmetric.hpp"
#include <string>
namespace pwiz {
namespace util {
/// model of boost::iostreams::SymmetricFilter
class SHA1SymmetricFilter
{
public:
typedef char char_type;
bool filter(const char*& src_begin, const char* src_end,
char*& dest_begin, char* dest_end, bool flush)
{
const char* dest_begin_orig = dest_begin;
for (; src_begin!=src_end && dest_begin!=dest_end; ++src_begin, ++dest_begin)
*dest_begin = *src_begin;
sha1_.update(reinterpret_cast<const unsigned char*>(dest_begin_orig),
dest_begin - dest_begin_orig);
return false;
}
void close() {}
std::string hash()
{
return sha1_.hashProjected();
};
private:
SHA1Calculator sha1_;
};
/// model of boost::iostreams::Filter
class SHA1Filter : public boost::iostreams::symmetric_filter<SHA1SymmetricFilter>
{
public:
typedef boost::iostreams::symmetric_filter<SHA1SymmetricFilter> base_type;
SHA1Filter(int bufferSize)
: base_type(bufferSize)
{}
std::string hash() {return this->filter().hash();}
};
/// ostream filter for calculating a SHA-1 hash of data on the fly
class SHA1_ostream : public boost::iostreams::filtering_ostream
{
public:
SHA1_ostream(std::ostream& os, int bufferSize = 4096)
: os_(os), filter_(bufferSize)
{
push(filter_);
push(os);
}
std::string hash() {return filter_.hash();}
void explicitFlush()
{
// hack: not flushing properly with the filter in the pipeline
pop(); // this flushes os_ explicitly
push(os_);
}
private:
std::ostream& os_;
SHA1Filter filter_;
};
} // namespace util
} // namespace pwiz
#endif // _SHA1_OSTREAM_HPP_
|
