bdca8b01d2
#pragma once is a widely supported compiler pragma, even though it is not part of the C++ standard. Many of the issues keeping #pragma once from being standardized (distributed filesystems, build farms, hard links, etc.) do not apply to CMake - it is easy to build CMake on a single machine. CMake also does not install any header files which can be consumed by other projects (though cmCPluginAPI.h has been deliberately omitted from this conversion in case anyone is still using it.) Finally, #pragma once has been required to build CMake since at least August 2017 (7f29bbe6enabled server mode unconditionally, which had been using #pragma once since September 2016 (b13d3e0d)). The fact that we now require C++11 filters out old compilers, and it is unlikely that there is a compiler which supports C++11 but does not support #pragma once.
38 lines
1010 B
C++
38 lines
1010 B
C++
/* Distributed under the OSI-approved BSD 3-Clause License. See accompanying
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file Copyright.txt or https://cmake.org/licensing for details. */
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#pragma once
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#include "cmConfigure.h" // IWYU pragma: keep
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#include <memory>
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#include <string>
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/** \class cmFileTimes
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* \brief Loads and stores file times.
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*/
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class cmFileTimes
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{
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public:
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cmFileTimes();
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//! Calls Load()
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cmFileTimes(std::string const& fileName);
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~cmFileTimes();
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//! @return true, if file times were loaded successfully
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bool IsValid() const { return (times != nullptr); }
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//! Try to load the file times from @a fileName and @return IsValid()
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bool Load(std::string const& fileName);
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//! Stores the file times at @a fileName (if IsValid())
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bool Store(std::string const& fileName) const;
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//! Copies the file times of @a fromFile to @a toFile
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static bool Copy(std::string const& fromFile, std::string const& toFile);
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private:
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#ifdef _WIN32
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class WindowsHandle;
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#endif
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class Times;
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std::unique_ptr<Times> times;
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};
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