#include "TestUtil.h"

#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <cerrno>
#include <cstring>
#include <sstream>
#include <fstream>

#include "a2io.h"
#include "File.h"
#include "StringFormat.h"
#include "FatalException.h"

namespace aria2 {

void createFile(const std::string& path, size_t length)
{
  File(File(path).getDirname()).mkdirs();
  int fd = creat(path.c_str(), OPEN_MODE);
  if(fd == -1) {
    throw FATAL_EXCEPTION(StringFormat("Could not create file=%s. cause:%s",
                                       path.c_str(), strerror(errno)).str());
  }
  if(-1 == ftruncate(fd, length)) {
    throw FATAL_EXCEPTION(StringFormat("ftruncate failed. cause:%s",
                                       strerror(errno)).str());
  }
  close(fd);
}

std::string readFile(const std::string& path)
{
  std::stringstream ss;
  std::ifstream in(path.c_str(), std::ios::binary);
  char buf[4096];
  while(1) {
    in.read(buf, sizeof(buf));
    ss.write(buf, in.gcount());
    if(in.gcount() != sizeof(buf)) {
      break;
    }
  }
  return ss.str();
}

};
