63e88f80
 Hu Chunming
提交三方库
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//---------------------------------------------------------------------------//
// Copyright (c) 2013-2014 Kyle Lutz <kyle.r.lutz@gmail.com>
//
// Distributed under the Boost Software License, Version 1.0
// See accompanying file LICENSE_1_0.txt or copy at
// http://www.boost.org/LICENSE_1_0.txt
//
// See http://boostorg.github.com/compute for more information.
//---------------------------------------------------------------------------//
#ifndef BOOST_COMPUTE_DETAIL_SHA1_HPP
#define BOOST_COMPUTE_DETAIL_SHA1_HPP
#include <sstream>
#include <iomanip>
#include <boost/version.hpp>
#if BOOST_VERSION >= 106600
# include <boost/uuid/detail/sha1.hpp>
#else
# include <boost/uuid/sha1.hpp>
#endif
namespace boost {
namespace compute {
namespace detail {
// Accumulates SHA1 hash of the passed strings.
class sha1 {
public:
sha1(const std::string &s = "") {
if (!s.empty()) this->process(s);
}
sha1& process(const std::string &s) {
h.process_bytes(s.c_str(), s.size());
return *this;
}
operator std::string() {
unsigned int digest[5];
h.get_digest(digest);
std::ostringstream buf;
for(int i = 0; i < 5; ++i)
buf << std::hex << std::setfill('0') << std::setw(8) << digest[i];
return buf.str();
}
private:
boost::uuids::detail::sha1 h;
};
} // end detail namespace
} // end compute namespace
} // end boost namespace
#endif // BOOST_COMPUTE_DETAIL_SHA1_HPP
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