///////////////////////////////////////////////////////////////
// fileattr.cpp - extract attribute 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 file attributes >------------------------------

void ShowAttributes(DWORD attributes)
{
  if(attributes & FILE_ATTRIBUTE_ARCHIVE  ) cout << "  archive\n";
  if(attributes & FILE_ATTRIBUTE_DIRECTORY) cout << "  directory\n";
  if(attributes & FILE_ATTRIBUTE_HIDDEN   ) cout << "  hidden\n";
  if(attributes & FILE_ATTRIBUTE_NORMAL   ) cout << "  normal\n";
  if(attributes & FILE_ATTRIBUTE_READONLY ) cout << "  read only\n";
  if(attributes & FILE_ATTRIBUTE_SYSTEM   ) cout << "  system\n";
  if(attributes & FILE_ATTRIBUTE_TEMPORARY) cout << "  temporary\n";
}

//----< 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 information >-----------------------------

void main()
{
  char filename[MAX_PATH];
  HANDLE fileHandle;
  BOOL success;
  BY_HANDLE_FILE_INFORMATION info;

  cout << "\n  Demonstrate File Information Extraction "
       << "\n =========================================\n\n";

  cout << "  Enter filename: ";
  cin >> filename;
  fileHandle = CreateFile(
    filename, GENERIC_READ, FILE_SHARE_WRITE, 0, OPEN_EXISTING, 0, 0
  );
  if (fileHandle == INVALID_HANDLE_VALUE)
  {
    cout << "  Error number " << GetLastError() << endl << endl;
    return;
  }
  else
  {
    success =
      GetFileInformationByHandle(fileHandle, &info);
    if (success)
    {
      ShowAttributes(info.dwFileAttributes);
      cout << "  Last write time: ";
      ShowTime(info.ftLastWriteTime);
      cout << "  Volume serial number: "
           << info.dwVolumeSerialNumber << endl;
      cout << "  File size: " << info.nFileSizeLow << endl;
      cout << "  Number of links: " << info.nNumberOfLinks << endl;
      cout << "  High index: " << info.nFileIndexHigh << endl;
      cout << "  Low index = " << info.nFileIndexLow  << endl << endl;
    }
  }
}