- added function for datetime formatting

1 files changed, 27 insertions, 0 deletions

diff --git a/tools.cpp b/tools.cpp
new file mode 100644
index 0000000..3eda4b8
--- /dev/null
+++ b/tools.cpp
@@ -0,0 +1,27 @@
+#include <sstream>
+#include <stdexcept>
+#include "tools.h"
+
+namespace vdrlive {
+
+using namespace std;
+	
+string FormatDateTime( char const* format, time_t time )
+{
+	struct tm tm_r;
+	if ( localtime_r( &time, &tm_r ) == 0 ) {
+		ostringstream builder;
+		builder << "cannot represent timestamp " << time << " as local time";
+		throw runtime_error( builder.str() );
+	}
+	
+	char result[ 256 ];
+	if ( strftime( result, sizeof( result ), format, &tm_r ) == 0 ) {
+		ostringstream builder;
+		builder << "representation of timestamp " << time << " exceeds " << sizeof( result ) << " bytes";
+		throw runtime_error( builder.str() );
+	}
+	return result;
+}
+
+}