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| #define UNICODE | |
| #include <string> | |
| #include <experimental/generator> | |
| #include <iostream> | |
| #include <functional> | |
| #include <string_view> | |
| #include <Windows.h> | |
| using namespace std::experimental; | |
| [[noreturn]] void ThrowSystem() | |
| { | |
| throw std::system_error{static_cast<int>(::GetLastError()), std::system_category()}; | |
| } | |
| template<typename F> | |
| class ScopeExit | |
| { | |
| private: | |
| F f_; | |
| public: | |
| ScopeExit(F f) | |
| : f_{std::move(f)} | |
| {} | |
| ScopeExit(const ScopeExit&) = delete; | |
| ScopeExit& operator= (const ScopeExit&) = delete; | |
| ScopeExit(ScopeExit&&) = default; | |
| ScopeExit& operator= (ScopeExit&&) = default; | |
| ~ScopeExit() | |
| { | |
| std::invoke(f_); | |
| } | |
| }; | |
| template<typename F> | |
| ScopeExit<F> Finally(F f) noexcept | |
| { | |
| return {std::move(f)}; | |
| } | |
| generator<std::wstring> Files(const std::wstring &path) | |
| { | |
| ::WIN32_FIND_DATAW ffd = {}; | |
| auto newPath = path + L"\\*"; | |
| auto file = ::FindFirstFileW(newPath.c_str(), &ffd); | |
| auto clean = Finally([file]() noexcept {::FindClose(file);}); | |
| if (file == INVALID_HANDLE_VALUE) | |
| { | |
| ThrowSystem(); | |
| } | |
| do | |
| { | |
| if (ffd.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) | |
| { | |
| auto name = std::wstring_view{ffd.cFileName}; | |
| if (name == L"." || name == L"..") | |
| { | |
| continue; | |
| } | |
| auto nextPath = path + L"\\" + name.data(); | |
| for (auto p : Files(nextPath)) | |
| { | |
| co_yield p; | |
| } | |
| } | |
| else | |
| { | |
| co_yield ffd.cFileName; | |
| } | |
| } while (::FindNextFileW(file, &ffd)); | |
| } | |
| int main() | |
| { | |
| std::wstring dir = L"C:\\Users\\LYP\\Documents\\GitHub\\IntrusivePtr"; | |
| for (auto path : Files(dir)) | |
| { | |
| std::wcout << path << "\n"; | |
| } | |
| } |
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