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//
// $Id$
//
//
// 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 _SHA1CALCULATOR_HPP_
#define _SHA1CALCULATOR_HPP_
#include "pwiz/utility/misc/Export.hpp"
#include "boost/shared_ptr.hpp"
#include <string>
#include <iostream>
namespace pwiz {
namespace util {
class PWIZ_API_DECL SHA1Calculator
{
public:
SHA1Calculator();
/// resets hash
void reset();
/// update hash with buffer of bytes
void update(const unsigned char* buffer, size_t bufferSize);
/// update hash with buffer of bytes
void update(const std::string& buffer);
/// finish the hash
void close();
/// returns the current hash value
/// note: close() must be called first to retrieve final hash value
std::string hash() const;
/// returns projected final hash value as if close() were called first;
/// hash remains open and update() may be called afterwards
std::string hashProjected() const;
/// static function to calculate hash of a buffer
static std::string hash(const std::string& buffer);
/// static function to calculate hash of a buffer
static std::string hash(const unsigned char* buffer, size_t bufferSize);
/// static function to calculate hash of an input stream
static std::string hash(std::istream& is);
/// static function to calculate hash of a file
static std::string hashFile(const std::string& filename);
private:
class Impl;
boost::shared_ptr<Impl> impl_;
SHA1Calculator(const SHA1Calculator&);
SHA1Calculator& operator=(const SHA1Calculator&);
};
} // namespace util
} // namespace pwiz
#endif // _SHA1CALCULATOR_HPP_
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