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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.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);
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;
}
std::string unpadLeft(std::string _b)
{
auto p = _b.find_first_not_of('0');
if (p == std::string::npos)
return "0";
return _b.substr(p, _b.length() - 1);
}
std::string prettyU256(u256 _n)
{
unsigned inc = 0;
std::string raw;
std::ostringstream s;
if (!(_n >> 64))
s << " " << (uint64_t)_n << " (0x" << std::hex << (uint64_t)_n << ")";
else if (!~(_n >> 64))
s << " " << (int64_t)_n << " (0x" << std::hex << (int64_t)_n << ")";
else if ((_n >> 160) == 0)
{
Address a = right160(_n);
std::string n = a.abridged();
if (n.empty())
s << "0x" << a;
else
s << n << "(0x" << a.abridged() << ")";
}
else if ((raw = fromRaw((h256)_n, &inc)).size())
return "\"" + raw + "\"" + (inc ? " + " + std::to_string(inc) : "");
else
s << "" << (h256)_n;
return s.str();
}
std::string fromRaw(h256 _n, unsigned* _inc)
{
if (_n)
{
std::string s((char const*)_n.data(), 32);
auto l = s.find_first_of('\0');
if (!l)
return "";
if (l != std::string::npos)
{
auto p = s.find_first_not_of('\0', l);
if (!(p == std::string::npos || (_inc && p == 31)))
return "";
if (_inc)
*_inc = (byte)s[31];
s.resize(l);
}
for (auto i: s)
if (i < 32)
return "";
return s;
}
return "";
}
Address fromString(std::string const& _sn)
{
if (_sn.size() == 40)
return Address(fromHex(_sn));
else
return Address();
}
}