CMake/Source/cmFileTimeComparison.h
2019-01-28 09:09:59 -05:00

43 lines
1.2 KiB
C++

/* Distributed under the OSI-approved BSD 3-Clause License. See accompanying
file Copyright.txt or https://cmake.org/licensing for details. */
#ifndef cmFileTimeComparison_h
#define cmFileTimeComparison_h
#include "cmConfigure.h" // IWYU pragma: keep
#include <string>
class cmFileTimeComparisonInternal;
/** \class cmFileTimeComparison
* \brief Helper class for comparing file modification times.
*
* Compare file modification times or test if file modification times differ.
*/
class cmFileTimeComparison
{
public:
cmFileTimeComparison();
~cmFileTimeComparison();
/**
* Compare file modification times.
* Return true for successful comparison and false for error.
* When true is returned, result has -1, 0, +1 for
* f1 older, same, or newer than f2.
*/
bool FileTimeCompare(const std::string& f1, const std::string& f2,
int* result);
/**
* Compare file modification times. Return true unless both files
* exist and have modification times less than 1 second apart.
*/
bool FileTimesDiffer(const std::string& f1, const std::string& f2);
protected:
cmFileTimeComparisonInternal* Internals;
};
#endif