diff options
Diffstat (limited to 'Source/cmXMLWriter.h')
| -rw-r--r-- | Source/cmXMLWriter.h | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/Source/cmXMLWriter.h b/Source/cmXMLWriter.h index 981255d..c890acf 100644 --- a/Source/cmXMLWriter.h +++ b/Source/cmXMLWriter.h @@ -7,6 +7,8 @@ #include "cmXMLSafe.h" +#include <chrono> +#include <ctime> #include <ostream> #include <stack> #include <string> @@ -99,6 +101,22 @@ private: return cmXMLSafe(value).Quotes(false); } + /* + * Convert a std::chrono::system::time_point to the number of seconds since + * the UN*X epoch. + * + * It would be tempting to convert a time_point to number of seconds by + * using time_since_epoch(). Unfortunately the C++11 standard does not + * specify what the epoch of the system_clock must be. + * Therefore we must assume it is an arbitary point in time. Instead of this + * method, it is recommended to convert it by means of the to_time_t method. + */ + static std::time_t SafeContent( + std::chrono::system_clock::time_point const& value) + { + return std::chrono::system_clock::to_time_t(value); + } + template <typename T> static T SafeContent(T value) { |