/*

 * 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 <cxxabi.h>

#include <stdlib.h>

#include <string>

#include <rustc_demangle.h>

#include <unwindstack/Demangle.h>

namespace unwindstack {

std::string DemangleNameIfNeeded(const std::string& name) {

  if (name.length() < 2 || name[0] != '_') {

    return name;

  }

  char* demangled_str = nullptr;

  if (name[1] == 'Z') {

    // Try to demangle C++ name.

    demangled_str = abi::__cxa_demangle(name.c_str(), nullptr, nullptr, nullptr);

  } else if (name[1] == 'R') {

    // Try to demangle rust name.

    demangled_str = rustc_demangle(name.c_str(), nullptr, nullptr, nullptr);

  }

  if (demangled_str == nullptr) {

    return name;

  }

  std::string demangled_name(demangled_str);

  free(demangled_str);

  return demangled_name;

}

}  // namespace unwindstack