// Copyright 2013 The Flutter Authors. All rights reserved.

// Use of this source code is governed by a BSD-style license that can be

// found in the LICENSE file.

#include "flutter/shell/platform/common/path_utils.h"

#if defined(_WIN32)

#include <windows.h>

#elif defined(__linux__)

#include <linux/limits.h>

#include <unistd.h>

#endif

namespace flutter {

std::filesystem::path GetExecutableDirectory() {

#if defined(_WIN32)

wchar_t buffer[MAX_PATH];

if (GetModuleFileName(nullptr, buffer, MAX_PATH) == 0) {

return std::filesystem::path();

}

std::filesystem::path executable_path(buffer);

return executable_path.remove_filename();

#elif defined(__linux__)

char buffer[PATH_MAX];

ssize_t length = readlink("/proc/self/exe", buffer, sizeof(buffer));

if (length < 0) {

return std::filesystem::path();

}

std::filesystem::path executable_path(std::string(buffer, length));

return executable_path.remove_filename();

#else

return std::filesystem::path();

#endif

}

} // namespace flutter