| /* Distributed under the OSI-approved BSD 3-Clause License. See accompanying |
| file Copyright.txt or https://cmake.org/licensing for details. */ |
| #include "cmFileTimes.h" |
| |
| #include <utility> |
| |
| #include <cm/memory> |
| |
| #include "cm_sys_stat.h" |
| |
| #if defined(_WIN32) |
| # include <windows.h> |
| |
| # include "cmSystemTools.h" |
| #else |
| # include <utime.h> |
| #endif |
| |
| #if defined(_WIN32) && \ |
| (defined(_MSC_VER) || defined(__WATCOMC__) || defined(__MINGW32__)) |
| # include <io.h> |
| #endif |
| |
| #ifdef _WIN32 |
| class cmFileTimes::WindowsHandle |
| { |
| public: |
| WindowsHandle(HANDLE h) |
| : handle_(h) |
| { |
| } |
| ~WindowsHandle() |
| { |
| if (this->handle_ != INVALID_HANDLE_VALUE) { |
| CloseHandle(this->handle_); |
| } |
| } |
| explicit operator bool() const |
| { |
| return this->handle_ != INVALID_HANDLE_VALUE; |
| } |
| bool operator!() const { return this->handle_ == INVALID_HANDLE_VALUE; } |
| operator HANDLE() const { return this->handle_; } |
| |
| private: |
| HANDLE handle_; |
| }; |
| #endif |
| |
| class cmFileTimes::Times |
| { |
| public: |
| #if defined(_WIN32) && !defined(__CYGWIN__) |
| FILETIME timeCreation; |
| FILETIME timeLastAccess; |
| FILETIME timeLastWrite; |
| #else |
| struct utimbuf timeBuf; |
| #endif |
| }; |
| |
| cmFileTimes::cmFileTimes() = default; |
| cmFileTimes::cmFileTimes(std::string const& fileName) |
| { |
| Load(fileName); |
| } |
| cmFileTimes::~cmFileTimes() = default; |
| |
| bool cmFileTimes::Load(std::string const& fileName) |
| { |
| std::unique_ptr<Times> ptr; |
| if (IsValid()) { |
| // Invalidate this and re-use times |
| ptr.swap(this->times); |
| } else { |
| ptr = cm::make_unique<Times>(); |
| } |
| |
| #if defined(_WIN32) && !defined(__CYGWIN__) |
| cmFileTimes::WindowsHandle handle = |
| CreateFileW(cmSystemTools::ConvertToWindowsExtendedPath(fileName).c_str(), |
| GENERIC_READ, FILE_SHARE_READ, 0, OPEN_EXISTING, |
| FILE_FLAG_BACKUP_SEMANTICS, 0); |
| if (!handle) { |
| return false; |
| } |
| if (!GetFileTime(handle, &ptr->timeCreation, &ptr->timeLastAccess, |
| &ptr->timeLastWrite)) { |
| return false; |
| } |
| #else |
| struct stat st; |
| if (stat(fileName.c_str(), &st) < 0) { |
| return false; |
| } |
| ptr->timeBuf.actime = st.st_atime; |
| ptr->timeBuf.modtime = st.st_mtime; |
| #endif |
| // Accept times |
| this->times = std::move(ptr); |
| return true; |
| } |
| |
| bool cmFileTimes::Store(std::string const& fileName) const |
| { |
| if (!IsValid()) { |
| return false; |
| } |
| |
| #if defined(_WIN32) && !defined(__CYGWIN__) |
| cmFileTimes::WindowsHandle handle = CreateFileW( |
| cmSystemTools::ConvertToWindowsExtendedPath(fileName).c_str(), |
| FILE_WRITE_ATTRIBUTES, 0, 0, OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS, 0); |
| if (!handle) { |
| return false; |
| } |
| return SetFileTime(handle, &this->times->timeCreation, |
| &this->times->timeLastAccess, |
| &this->times->timeLastWrite) != 0; |
| #else |
| return utime(fileName.c_str(), &this->times->timeBuf) >= 0; |
| #endif |
| } |
| |
| bool cmFileTimes::Copy(std::string const& fromFile, std::string const& toFile) |
| { |
| cmFileTimes fileTimes; |
| return (fileTimes.Load(fromFile) && fileTimes.Store(toFile)); |
| } |