xref: /aosp_15_r20/system/chre/util/nanoapp/string.cc (revision 84e339476a462649f82315436d70fd732297a399)

/*
 * Copyright (C) 2023 The Android Open Source Project
 *
 * 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 "chre/util/nanoapp/string.h"
#include "chre/util/nanoapp/assert.h"

namespace chre {

void copyString(char *destination, const char *source,
                size_t destinationBufferSize) {
  CHRE_ASSERT_NOT_NULL(destination);
  CHRE_ASSERT_NOT_NULL(source);

  if (destinationBufferSize == 0) {
    return;
  }

  uint32_t i;
  for (i = 0; i < destinationBufferSize - 1 && source[i] != '\0'; ++i) {
    destination[i] = source[i];
  }

  memset(&destination[i], 0, destinationBufferSize - i);
}

}  // namespace chre