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119 lines
3.2 KiB
119 lines
3.2 KiB
/*
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This file is part of cpp-ethereum.
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cpp-ethereum is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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cpp-ethereum is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with cpp-ethereum. If not, see <http://www.gnu.org/licenses/>.
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*/
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/** @file CommonIO.cpp
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* @author Gav Wood <i@gavwood.com>
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* @date 2014
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*/
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#include "CommonIO.h"
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#include <fstream>
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#include "Exceptions.h"
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using namespace std;
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using namespace dev;
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string dev::memDump(bytes const& _bytes, unsigned _width, bool _html)
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{
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stringstream ret;
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if (_html)
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ret << "<pre style=\"font-family: Monospace,Lucida Console,Courier,Courier New,sans-serif; font-size: small\">";
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for (unsigned i = 0; i < _bytes.size(); i += _width)
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{
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ret << hex << setw(4) << setfill('0') << i << " ";
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for (unsigned j = i; j < i + _width; ++j)
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if (j < _bytes.size())
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if (_bytes[j] >= 32 && _bytes[j] < 127)
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if ((char)_bytes[j] == '<' && _html)
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ret << "<";
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else if ((char)_bytes[j] == '&' && _html)
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ret << "&";
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else
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ret << (char)_bytes[j];
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else
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ret << '?';
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else
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ret << ' ';
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ret << " ";
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for (unsigned j = i; j < i + _width && j < _bytes.size(); ++j)
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ret << setfill('0') << setw(2) << hex << (unsigned)_bytes[j] << " ";
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ret << "\n";
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}
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if (_html)
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ret << "</pre>";
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return ret.str();
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}
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// Don't forget to delete[] later.
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bytesRef dev::contentsNew(std::string const& _file, bytesRef _dest)
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{
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std::ifstream is(_file, std::ifstream::binary);
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if (!is)
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return bytesRef();
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// get length of file:
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is.seekg (0, is.end);
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streamoff length = is.tellg();
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if (length == 0) // return early, MSVC does not like reading 0 bytes
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return bytesRef();
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if (!_dest.empty() && _dest.size() != (unsigned)length)
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return bytesRef();
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is.seekg (0, is.beg);
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bytesRef ret = _dest.empty() ? bytesRef(new byte[length], length) : _dest;
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is.read((char*)ret.data(), length);
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is.close();
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return ret;
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}
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bytes dev::contents(std::string const& _file)
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{
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std::ifstream is(_file, std::ifstream::binary);
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if (!is)
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return bytes();
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// get length of file:
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is.seekg (0, is.end);
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streamoff length = is.tellg();
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if (length == 0) // return early, MSVC does not like reading 0 bytes
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return bytes();
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is.seekg (0, is.beg);
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bytes ret(length);
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is.read((char*)ret.data(), length);
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is.close();
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return ret;
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}
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string dev::contentsString(std::string const& _file)
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{
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std::ifstream is(_file, std::ifstream::binary);
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if (!is)
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return string();
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// get length of file:
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is.seekg (0, is.end);
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streamoff length = is.tellg();
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if (length == 0) // return early, MSVC does not like reading 0 bytes
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return string();
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is.seekg (0, is.beg);
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string ret;
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ret.resize(length);
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is.read((char*)ret.data(), length);
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is.close();
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return ret;
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}
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void dev::writeFile(std::string const& _file, bytesConstRef _data)
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{
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ofstream(_file, ios::trunc|ios::binary).write((char const*)_data.data(), _data.size());
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}
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