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/*
This file is part of cpp-ethereum.
cpp-ethereum is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
cpp-ethereum is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with cpp-ethereum. If not, see <http://www.gnu.org/licenses/>.
*/
/** @file CommonJS.h
* @authors:
* Gav Wood <i@gavwood.com>
* @date 2014
*/
#pragma once
#include <string>
#include <libethcore/Common.h>
#include <libethcore/CommonIO.h>
#include <libethcore/CommonData.h>
#include <libethcore/FixedHash.h>
#include <libethereum/CommonEth.h>
namespace eth
{
eth::bytes jsToBytes(std::string const& _s);
std::string jsPadded(std::string const& _s, unsigned _l, unsigned _r);
std::string jsPadded(std::string const& _s, unsigned _l);
std::string jsUnpadded(std::string _s);
template <unsigned N> eth::FixedHash<N> jsToFixed(std::string const& _s)
{
if (_s.substr(0, 2) == "0x")
// Hex
return eth::FixedHash<N>(_s.substr(2));
else if (_s.find_first_not_of("0123456789") == std::string::npos)
// Decimal
return (typename eth::FixedHash<N>::Arith)(_s);
else
// Binary
return eth::FixedHash<N>(asBytes(jsPadded(_s, N)));
}
template <unsigned N> boost::multiprecision::number<boost::multiprecision::cpp_int_backend<N * 8, N * 8, boost::multiprecision::unsigned_magnitude, boost::multiprecision::unchecked, void>> jsToInt(std::string const& _s)
{
if (_s.substr(0, 2) == "0x")
// Hex
return eth::fromBigEndian<boost::multiprecision::number<boost::multiprecision::cpp_int_backend<N * 8, N * 8, boost::multiprecision::unsigned_magnitude, boost::multiprecision::unchecked, void>>>(eth::fromHex(_s.substr(2)));
else if (_s.find_first_not_of("0123456789") == std::string::npos)
// Decimal
return boost::multiprecision::number<boost::multiprecision::cpp_int_backend<N * 8, N * 8, boost::multiprecision::unsigned_magnitude, boost::multiprecision::unchecked, void>>(_s);
else
// Binary
return eth::fromBigEndian<boost::multiprecision::number<boost::multiprecision::cpp_int_backend<N * 8, N * 8, boost::multiprecision::unsigned_magnitude, boost::multiprecision::unchecked, void>>>(asBytes(jsPadded(_s, N)));
}
inline eth::Address jsToAddress(std::string const& _s) { return jsToFixed<20>(_s); }
inline eth::Secret jsToSecret(std::string const& _s) { return jsToFixed<32>(_s); }
inline eth::u256 jsToU256(std::string const& _s) { return jsToInt<32>(_s); }
template <unsigned S> std::string toJS(eth::FixedHash<S> const& _h) { return "0x" + toHex(_h.ref()); }
template <unsigned N> std::string toJS(boost::multiprecision::number<boost::multiprecision::cpp_int_backend<N, N, boost::multiprecision::unsigned_magnitude, boost::multiprecision::unchecked, void>> const& _n) { return "0x" + eth::toHex(eth::toCompactBigEndian(_n)); }
inline std::string jsToBinary(std::string const& _s)
{
return eth::asString(jsToBytes(_s));
}
inline std::string jsToDecimal(std::string const& _s)
{
return eth::toString(jsToU256(_s));
}
inline std::string jsToHex(std::string const& _s)
{
return "0x" + eth::toHex(asBytes(_s));
}
}