///////////////////////////////////////////////////////////////
// filetime.cpp - extract time information from files        //
//                                                           //
// Adapted by Jim Fawcett from the book:                     //
// "Win32 System Services:                                   //
// The Heart of Windows 95 and Windows NT", Marshall Brain,  //
// Prentice Hall, Copyright 1995                             //
//                                                           //
///////////////////////////////////////////////////////////////

#include <windows.h>
#include <iostream>
#include <iomanip>
using namespace std;

//----< display a FILETIME value >-----------------------------

void ShowTime(FILETIME t)
// Dumps the t to stdout
{
	FILETIME ft;
	SYSTEMTIME st;

	FileTimeToLocalFileTime(&t, &ft);
	FileTimeToSystemTime(&ft, &st);
  char *append;
  if(st.wHour >= 12)
    append = "PM";
  else
    append = "AM";
  if(st.wHour == 0)
    st.wHour += 12;
  long save = cout.flags();
  cout.fill('0');
	cout << setw(2) << st.wMonth << "/" 
       << setw(2) << st.wDay   << "/" 
       << st.wYear << "   " 
       << setw(2) << st.wHour 	<< ":" 
       << setw(2) << st.wMinute << " " << append << endl;	
  cout.flags(save);
}

//

//----< extract file time information from files >-------------

void main()
{
	HANDLE fileHandle;
	char filename[MAX_PATH];
	FILETIME create, lastWrite, lastAccess;
	BOOL success;

  cout << "\n  Demonstrate File Time Extraction "
       << "\n ==================================\n\n";
  
	cout << "  Enter filename: ";
	cin >> filename;

	// open file
	fileHandle = CreateFile(
    filename, GENERIC_READ, FILE_SHARE_WRITE, 0, OPEN_EXISTING, 0, 0
  );
	if (fileHandle == INVALID_HANDLE_VALUE)
	{
		cout << "  Error number " << GetLastError()
			<< endl;
		return;
	}
	else
	{
		// extract file times
		success = GetFileTime( fileHandle, &create, &lastAccess, &lastWrite);
		cout << "  Last write time: ";
		ShowTime(lastWrite);
		// the other two won't work in FAT systems
	}
	CloseHandle(fileHandle);  
  cout << endl;
}