// Copyright 2019 The Pigweed 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

//

//     https://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 "pw_sys_io/sys_io.h"

namespace pw::sys_io {

StatusWithSize ReadBytes(ByteSpan dest) {

  for (size_t i = 0; i < dest.size_bytes(); ++i) {

    Status result = ReadByte(&dest[i]);

    if (!result.ok()) {

      return StatusWithSize(result, i);

    }

  }

  return StatusWithSize(dest.size_bytes());

}

StatusWithSize WriteBytes(ConstByteSpan src) {

  for (size_t i = 0; i < src.size_bytes(); ++i) {

    Status result = WriteByte(src[i]);

    if (!result.ok()) {

      return StatusWithSize(result, i);

    }

  }

  return StatusWithSize(src.size_bytes());

}

}  // namespace pw::sys_io