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