xref: /aosp_15_r20/external/pigweed/pw_sys_io/sys_io.cc (revision 61c4878ac05f98d0ceed94b57d316916de578985)

// 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