/*

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.cpp

* @authors:

* Gav Wood <i@gavwood.com>

* Marek Kotewicz <marek@ethdev.com>

* @date 2014

*/

#include "CommonJS.h"

namespace dev

{

bytes jsToBytes(std::string const& _s)

{

if (_s.substr(0, 2) == "0x")

// Hex

return fromHex(_s.substr(2));

else if (_s.find_first_not_of("0123456789") == std::string::npos)

// Decimal

return toCompactBigEndian(bigint(_s));

else

return bytes();

}

bytes padded(bytes _b, unsigned _l)

{

while (_b.size() < _l)

_b.insert(_b.begin(), 0);

while (_b.size() < _l)

_b.push_back(0);

return asBytes(asString(_b).substr(_b.size() - std::max(_l, _l)));

}

bytes unpadded(bytes _b)

{

auto p = asString(_b).find_last_not_of((char)0);

_b.resize(p == std::string::npos ? 0 : (p + 1));

return _b;

}

}