/* 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 <libethential/Common.h> #include <libethential/CommonIO.h> #include <libethential/CommonData.h> #include <libethential/FixedHash.h> #include <libethcore/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)); } }