file_writer.cc

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/*
 * Copyright 2016 The Cartographer Authors
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#include "cartographer/io/file_writer.h"

namespace cartographer {
namespace io {

StreamFileWriter::StreamFileWriter(const std::string& filename)
    : filename_(filename), out_(filename, std::ios::out | std::ios::binary) {}

StreamFileWriter::~StreamFileWriter() {}

bool StreamFileWriter::Write(const char* const data, const size_t len) {
  if (out_.bad()) {
    return false;
  }
  out_.write(data, len);
  return !out_.bad();
}

bool StreamFileWriter::Close() {
  if (out_.bad()) {
    return false;
  }
  out_.close();
  return !out_.bad();
}

bool StreamFileWriter::WriteHeader(const char* const data, const size_t len) {
  if (out_.bad()) {
    return false;
  }
  out_.flush();
  out_.seekp(0);
  return Write(data, len);
}

std::string StreamFileWriter::GetFilename() { return filename_; }

}  // namespace io
}  // namespace cartographer