/* <!-- copyright */
/*
 * aria2 - The high speed download utility
 *
 * Copyright (C) 2011 Tatsuhiro Tsujikawa
 *
 * This program 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 2 of the License, or
 * (at your option) any later version.
 *
 * This program 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 this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 *
 * In addition, as a special exception, the copyright holders give
 * permission to link the code of portions of this program with the
 * OpenSSL library under certain conditions as described in each
 * individual source file, and distribute linked combinations
 * including the two.
 * You must obey the GNU General Public License in all respects
 * for all of the code used other than OpenSSL.  If you modify
 * file(s) with this exception, you may extend this exception to your
 * version of the file(s), but you are not obligated to do so.  If you
 * do not wish to do so, delete this exception statement from your
 * version.  If you delete this exception statement from all source
 * files in the program, then also delete it here.
 */
/* copyright --> */
#include "WinConsoleFile.h"

#include <cstring>
#include <cstdio>
#include <cstdarg>
#include <string>

#include "a2io.h"
#include "util.h"

namespace aria2 {

WinConsoleFile::WinConsoleFile(DWORD stdHandle)
  : stdHandle_(stdHandle)
{}

WinConsoleFile::~WinConsoleFile() {}

namespace {
bool console(DWORD stdHandle)
{
  DWORD mode;
  return GetConsoleMode(GetStdHandle(stdHandle), &mode);
}
} // namespace

size_t WinConsoleFile::write(const char* str)
{
  DWORD written;
  if(console(stdHandle_)) {
    std::wstring msg = utf8ToWChar(str);
    WriteConsoleW(GetStdHandle(stdHandle_),
                  msg.c_str(), msg.size(), &written, 0);
  } else {
    WriteFile(GetStdHandle(stdHandle_),
              str, strlen(str), &written, 0);
  }
  return written;
}

int WinConsoleFile::vprintf(const char* format, va_list va)
{
  ssize_t r = _vscprintf(format, va);
  if (r <= 0) {
    return 0;
  }
  char *buf = new char[++r];
  r = vsnprintf(buf, r, format, va);
  if (r < 0) {
    delete [] buf;
    return 0;
  }
  DWORD written;
  if(console(stdHandle_)) {
    std::wstring msg = utf8ToWChar(buf);
    WriteConsoleW(GetStdHandle(stdHandle_),
                  msg.c_str(), msg.size(), &written, 0);
  } else {
    WriteFile(GetStdHandle(stdHandle_),
              buf, r, &written, 0);
  }
  delete [] buf;
  return written;
}

int WinConsoleFile::flush()
{
  return 0;
}

bool WinConsoleFile::supportsColor()
{
  return false;
}

} // namespace aria2