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/*
This file is part of solidity.
solidity 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.
solidity 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 solidity. If not, see <http://www.gnu.org/licenses/>.
*/
/** @file CommonIO.cpp
* @author Gav Wood <i@gavwood.com>
* @date 2014
*/
#include "CommonIO.h"
#include <iostream>
#include <cstdlib>
#include <fstream>
#include <stdio.h>
#if defined(_WIN32)
#include <windows.h>
#else
#include <unistd.h>
#include <termios.h>
#endif
#include <boost/filesystem.hpp>
#include "Assertions.h"
using namespace std;
using namespace dev;
namespace
{
template <typename _T>
inline _T readFile(std::string const& _file)
{
_T ret;
size_t const c_elementSize = sizeof(typename _T::value_type);
std::ifstream is(_file, std::ifstream::binary);
if (!is)
return ret;
// get length of file:
is.seekg(0, is.end);
streamoff length = is.tellg();
if (length == 0)
return ret; // do not read empty file (MSVC does not like it)
is.seekg(0, is.beg);
ret.resize((length + c_elementSize - 1) / c_elementSize);
is.read(const_cast<char*>(reinterpret_cast<char const*>(ret.data())), length);
return ret;
}
}
string dev::readFileAsString(string const& _file)
{
return readFile<string>(_file);
}
string dev::readStandardInput()
{
string ret;
while (!cin.eof())
{
string tmp;
// NOTE: this will read until EOF or NL
getline(cin, tmp);
ret.append(tmp);
ret.append("\n");
}
return ret;
}
void dev::writeFile(std::string const& _file, bytesConstRef _data, bool _writeDeleteRename)
{
namespace fs = boost::filesystem;
if (_writeDeleteRename)
{
fs::path tempPath = fs::unique_path(_file + "-%%%%%%");
writeFile(tempPath.string(), _data, false);
// will delete _file if it exists
fs::rename(tempPath, _file);
}
else
{
// create directory if not existent
fs::path p(_file);
if (!fs::exists(p.parent_path()))
{
fs::create_directories(p.parent_path());
try
{
fs::permissions(p.parent_path(), fs::owner_all);
}
catch (...)
{
}
}
ofstream s(_file, ios::trunc | ios::binary);
s.write(reinterpret_cast<char const*>(_data.data()), _data.size());
assertThrow(s, FileError, "Could not write to file: " + _file);
try
{
fs::permissions(_file, fs::owner_read|fs::owner_write);
}
catch (...)
{
}
}
}
#if defined(_WIN32)
class DisableConsoleBuffering
{
public:
DisableConsoleBuffering()
{
m_stdin = GetStdHandle(STD_INPUT_HANDLE);
GetConsoleMode(m_stdin, &m_oldMode);
SetConsoleMode(m_stdin, m_oldMode & (~(ENABLE_ECHO_INPUT | ENABLE_LINE_INPUT)));
}
~DisableConsoleBuffering()
{
SetConsoleMode(m_stdin, m_oldMode);
}
private:
HANDLE m_stdin;
DWORD m_oldMode;
};
#else
class DisableConsoleBuffering
{
public:
DisableConsoleBuffering()
{
tcgetattr(0, &m_termios);
m_termios.c_lflag &= ~ICANON;
m_termios.c_lflag &= ~ECHO;
m_termios.c_cc[VMIN] = 1;
m_termios.c_cc[VTIME] = 0;
tcsetattr(0, TCSANOW, &m_termios);
}
~DisableConsoleBuffering()
{
m_termios.c_lflag |= ICANON;
m_termios.c_lflag |= ECHO;
tcsetattr(0, TCSADRAIN, &m_termios);
}
private:
struct termios m_termios;
};
#endif
int dev::readStandardInputChar()
{
DisableConsoleBuffering disableConsoleBuffering;
return cin.get();
}
boost::filesystem::path dev::weaklyCanonicalFilesystemPath(boost::filesystem::path const &_path)
{
if (boost::filesystem::exists(_path))
return boost::filesystem::canonical(_path);
else
{
boost::filesystem::path head(_path);
boost::filesystem::path tail;
for (auto it = --_path.end(); !head.empty(); --it)
{
if (boost::filesystem::exists(head))
break;
tail = (*it) / tail;
head.remove_filename();
}
head = boost::filesystem::canonical(head);
return head / tail;
}
}
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