typedef struct _SYSTEMTIME
{
WORD wYear;
WORD wMonth;
WORD wDayOfWeek;
WORD wDay;
WORD wHour;
WORD wMinute;
WORD wSecond;
WORD wMilliseconds;
} SYSTEMTIME;

SYSTEMTIME st;
::GetSystemTime(&st);

typedef struct _FILETIME
{
DWORD dwLowDateTime;
DWORD dwHighDateTime;
} FILETIME;

__int64 d = *(__int64 *)& st;

//or

__int64 d2;
memcpy( &d2,&st,sizeof(d2));

const __int64 nano100SecInDay=(__int64)10000000*60*60*24 ;

SYSTEMTIME st;
::GetSystemTime(& st);
FILETIME f;
::SystemTimeToFileTime(&st,& f);
ULARGE_INTEGER now;
memcpy(&now,&f,sizeof (now));
now += 100* nano100SecInDay;
memcpy(&f,&now,sizeof (f));
FileTimeToSystemTime(&f,& st);

#include <windows.h>
#include <cstdio>
#include <string>
using namespace std;

const __int64 nano100SecInDay=(__int64)10000000*60*60*24 ;
ULARGE_INTEGER now;
int days = 14 ;
bool backup = false ;
string dst_dir;
string backup_dir;

void make_sure_dir_exist(string & file)
{
int tag = 2 ;
while(true )
{
tag = file.find_first_of("\\",tag+1 );
if(tag!=-1 )
{
string tmp = file.substr(0 ,tag);
::CreateDirectory(tmp.c_str(),NULL);
}
else
{
break ;
}
}
}

void xdel(const char * dir)
{
char tempFileFind[1024 ];
sprintf(tempFileFind,"%s\\*.*" ,dir);

WIN32_FIND_DATA ffd;
HANDLE hFind;
hFind = ::FindFirstFile(tempFileFind,& ffd);

if(hFind == INVALID_HANDLE_VALUE)
{
printf("can't find %s\n" ,dir);
return ;
}

while(true )
{
//printf("find %s\n",ffd.cFileName);
FILETIME &ft = ffd.ftLastWriteTime;
ULARGE_INTEGER ui;
memcpy(&ui,&ft,sizeof (ui));
__int64 t = now.QuadPart- ui.QuadPart;

if(ffd.dwFileAttributes& FILE_ATTRIBUTE_DIRECTORY)
{
if(strcmp(ffd.cFileName, ".") && strcmp(ffd.cFileName, ".." ))
{
char temp[1024 ];
sprintf(temp,"%s\\%s" ,dir,ffd.cFileName);
xdel(temp);

if(t>=nano100SecInDay* days)
{
if (::RemoveDirectory(temp))
{
printf("del dir %s ok\n" ,temp);
}
else
{
printf( "del dir %s failed\n" ,temp);
}
}
}
}
else
{
char temp[1024 ];
sprintf(temp,"%s\\%s" ,dir,ffd.cFileName);

if(t>=nano100SecInDay* days)
{
if (backup)
{
string backup_file = temp;
backup_file.replace(0 ,dst_dir.length(),backup_dir.c_str());
make_sure_dir_exist(backup_file);
if (::MoveFile(temp,backup_file.c_str()))
{
printf("backup file %s ok\n" ,temp);
}
else
{
printf( "backup file %s failed\n" ,temp);
}
}
else
{
SetFileAttributes(temp,FILE_ATTRIBUTE_NORMAL);
if (::DeleteFile(temp))
{
printf("del file %s ok\n" ,temp);
}
else
{
printf( "del file %s failed\n" ,temp);
}
}
}
}
if (!FindNextFile(hFind, & ffd))
{
break ;
}
}
FindClose(hFind);
}

int main(int argc,char ** argv)
{
if(argc<2 )
{
printf("usage: xdel directory /d= /m=\n" );
printf("[optional] /d: config the expired days,default is 14 days\n" );
printf("[optional] /m: config the backup directory\n" );
printf("for example: xdel d:\\test /d=10 /m=d:\\backup" );
return 1 ;
}

for(int i=1;i<argc;++ i)
{
string tmp = argv[i];
if(tmp.find("/d=")!=-1 )
{
int d = atoi(tmp.substr(3 ).c_str());
if(d!=0 )
{
days = d;
}
}
else if(tmp.find("/m=")!=-1 )
{
backup = true ;
backup_dir = tmp.substr(3 );
}
else
{
dst_dir = tmp;
}
}

//Get system time
SYSTEMTIME st;
::GetSystemTime(& st);
FILETIME f;
::SystemTimeToFileTime(&st,& f);
memcpy(&now,&f,sizeof (now));

xdel(argv[1 ]);

return 0 ;
}