solidity/libsolutil/CommonIO.cpp
2020-06-02 19:01:29 +02:00

152 lines
3.5 KiB
C++

/*
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 <libsolutil/CommonIO.h>
#include <libsolutil/Assertions.h>
#include <boost/filesystem.hpp>
#include <iostream>
#include <cstdlib>
#include <fstream>
#if defined(_WIN32)
#include <windows.h>
#else
#include <unistd.h>
#include <termios.h>
#endif
using namespace std;
using namespace solidity::util;
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((static_cast<size_t>(length) + c_elementSize - 1) / c_elementSize);
is.read(const_cast<char*>(reinterpret_cast<char const*>(ret.data())), length);
return ret;
}
}
string solidity::util::readFileAsString(string const& _file)
{
return readFile<string>(_file);
}
string solidity::util::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;
}
#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 &= ~tcflag_t(ICANON);
m_termios.c_lflag &= ~tcflag_t(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 solidity::util::readStandardInputChar()
{
DisableConsoleBuffering disableConsoleBuffering;
return cin.get();
}
string solidity::util::absolutePath(string const& _path, string const& _reference)
{
boost::filesystem::path p(_path);
// Anything that does not start with `.` is an absolute path.
if (p.begin() == p.end() || (*p.begin() != "." && *p.begin() != ".."))
return _path;
boost::filesystem::path result(_reference);
result.remove_filename();
for (boost::filesystem::path::iterator it = p.begin(); it != p.end(); ++it)
if (*it == "..")
result = result.parent_path();
else if (*it != ".")
result /= *it;
return result.generic_string();
}
string solidity::util::sanitizePath(string const& _path) {
return boost::filesystem::path(_path).generic_string();
}