1 files changed, 66 insertions, 0 deletions
diff --git a/other-licenses/7zstub/src/Windows/Time.h b/other-licenses/7zstub/src/Windows/Time.h
new file mode 100644
index 000000000..b16602aa1
--- /dev/null
+++ b/other-licenses/7zstub/src/Windows/Time.h
@@ -0,0 +1,66 @@
+// Windows/Time.h
+
+#ifndef __WINDOWS_TIME_H
+#define __WINDOWS_TIME_H
+
+#include "Common/Types.h"
+#include "Windows/Defs.h"
+
+namespace NWindows {
+namespace NTime {
+
+inline bool DosTimeToFileTime(UInt32 dosTime, FILETIME &fileTime)
+{
+  return BOOLToBool(::DosDateTimeToFileTime(UInt16(dosTime >> 16), 
+      UInt16(dosTime & 0xFFFF), &fileTime));
+}
+
+const UInt32 kHighDosTime = 0xFF9FBF7D;
+const UInt32 kLowDosTime = 0x210000;
+
+inline bool FileTimeToDosTime(const FILETIME &fileTime, UInt32 &dosTime)
+{
+  WORD datePart, timePart;
+  if (!::FileTimeToDosDateTime(&fileTime, &datePart, &timePart))
+  {
+    if (fileTime.dwHighDateTime >= 0x01C00000) // 2000
+      dosTime = kHighDosTime;
+    else
+      dosTime = kLowDosTime;
+    return false;
+  }
+  dosTime = (((UInt32)datePart) << 16) + timePart;
+  return true;
+}
+
+const UInt32 kNumTimeQuantumsInSecond = 10000000;
+const UInt64 kUnixTimeStartValue = ((UInt64)kNumTimeQuantumsInSecond) * 60 * 60 * 24 * 134774;
+
+inline void UnixTimeToFileTime(UInt32 unixTime, FILETIME &fileTime)
+{
+  UInt64 v = kUnixTimeStartValue + ((UInt64)unixTime) * kNumTimeQuantumsInSecond;
+  fileTime.dwLowDateTime = (DWORD)v;
+  fileTime.dwHighDateTime = (DWORD)(v >> 32);
+}
+
+inline bool FileTimeToUnixTime(const FILETIME &fileTime, UInt32 &unixTime)
+{
+  UInt64 winTime = (((UInt64)fileTime.dwHighDateTime) << 32) + fileTime.dwLowDateTime;
+  if (winTime < kUnixTimeStartValue)
+  {
+    unixTime = 0;
+    return false;
+  }
+  winTime = (winTime - kUnixTimeStartValue) / kNumTimeQuantumsInSecond;
+  if (winTime > 0xFFFFFFFF)
+  {
+    unixTime = 0xFFFFFFFF;
+    return false;
+  }
+  unixTime = (UInt32)winTime;
+  return true;
+}
+
+}}
+
+#endif