| /* |
| * Copyright (c) 2021, The OpenThread Authors. |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * 3. Neither the name of the copyright holder nor the |
| * names of its contributors may be used to endorse or promote products |
| * derived from this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
| * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE |
| * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| * POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| /** |
| * @file |
| * This file implements the `Heap::String` (a heap allocated string). |
| */ |
| |
| #include "heap_string.hpp" |
| |
| #include "common/code_utils.hpp" |
| #include "common/string.hpp" |
| |
| namespace ot { |
| namespace Heap { |
| |
| Error String::Set(const char *aCString) |
| { |
| Error error = kErrorNone; |
| size_t curSize; |
| size_t newSize; |
| |
| VerifyOrExit(aCString != nullptr, Free()); |
| |
| curSize = (mStringBuffer != nullptr) ? strlen(mStringBuffer) + 1 : 0; |
| newSize = strlen(aCString) + 1; |
| |
| if (curSize != newSize) |
| { |
| char *newBuffer = static_cast<char *>(Heap::CAlloc(sizeof(char), newSize)); |
| |
| VerifyOrExit(newBuffer != nullptr, error = kErrorNoBufs); |
| |
| Heap::Free(mStringBuffer); |
| mStringBuffer = newBuffer; |
| } |
| |
| memcpy(mStringBuffer, aCString, newSize); |
| |
| exit: |
| return error; |
| } |
| |
| Error String::Set(String &&aString) |
| { |
| VerifyOrExit(mStringBuffer != aString.mStringBuffer); |
| |
| Heap::Free(mStringBuffer); |
| mStringBuffer = aString.mStringBuffer; |
| aString.mStringBuffer = nullptr; |
| |
| exit: |
| return kErrorNone; |
| } |
| |
| void String::Free(void) |
| { |
| Heap::Free(mStringBuffer); |
| mStringBuffer = nullptr; |
| } |
| |
| bool String::operator==(const char *aCString) const |
| { |
| bool isEqual; |
| |
| VerifyOrExit((aCString != nullptr) && (mStringBuffer != nullptr), isEqual = (mStringBuffer == aCString)); |
| isEqual = (strcmp(mStringBuffer, aCString) == 0); |
| |
| exit: |
| return isEqual; |
| } |
| |
| } // namespace Heap |
| } // namespace ot |