277     '''return full path of hg.exe'''

   277     '''return full path of hg.exe'''

   278     size = 600

   278     size = 600

   279     buf = ctypes.create_string_buffer(size + 1)

   279     buf = ctypes.create_string_buffer(size + 1)

   280     len = _kernel32.GetModuleFileNameA(None, ctypes.byref(buf), size)

   280     len = _kernel32.GetModuleFileNameA(None, ctypes.byref(buf), size)

   281     if len == 0:

   281     if len == 0:

   283     elif len == size:

   283     elif len == size:

   284         raise ctypes.WinError(_ERROR_INSUFFICIENT_BUFFER)

   284         raise ctypes.WinError(_ERROR_INSUFFICIENT_BUFFER)

   285     return buf.value

   285     return buf.value

   286 

   286 

   287 def getuser():

   287 def getuser():

   288     '''return name of current user'''

   288     '''return name of current user'''

   289     size = _DWORD(300)

   289     size = _DWORD(300)

   290     buf = ctypes.create_string_buffer(size.value + 1)

   290     buf = ctypes.create_string_buffer(size.value + 1)

   291     if not _advapi32.GetUserNameA(ctypes.byref(buf), ctypes.byref(size)):

   291     if not _advapi32.GetUserNameA(ctypes.byref(buf), ctypes.byref(size)):

   293     return buf.value

   293     return buf.value

   294 

   294 

   295 _signalhandler = []

   295 _signalhandler = []

   296 

   296 

   297 def setsignalhandler():

   297 def setsignalhandler():

   305     if _signalhandler:

   305     if _signalhandler:

   306         return # already registered

   306         return # already registered

   307     h = _SIGNAL_HANDLER(handler)

   307     h = _SIGNAL_HANDLER(handler)

   308     _signalhandler.append(h) # needed to prevent garbage collection

   308     _signalhandler.append(h) # needed to prevent garbage collection

   309     if not _kernel32.SetConsoleCtrlHandler(h, True):

   309     if not _kernel32.SetConsoleCtrlHandler(h, True):

   311 

   311 

   312 def hidewindow():

   312 def hidewindow():

   313 

   313 

   314     def callback(hwnd, pid):

   314     def callback(hwnd, pid):

   315         wpid = _DWORD()

   315         wpid = _DWORD()

   347     pe = _tagPROCESSENTRY32()

   347     pe = _tagPROCESSENTRY32()

   348 

   348 

   349     # create handle to list all processes

   349     # create handle to list all processes

   350     ph = _kernel32.CreateToolhelp32Snapshot(_TH32CS_SNAPPROCESS, 0)

   350     ph = _kernel32.CreateToolhelp32Snapshot(_TH32CS_SNAPPROCESS, 0)

   351     if ph == _INVALID_HANDLE_VALUE:

   351     if ph == _INVALID_HANDLE_VALUE:

   353     try:

   353     try:

   354         r = _kernel32.Process32First(ph, ctypes.byref(pe))

   354         r = _kernel32.Process32First(ph, ctypes.byref(pe))

   355         # loop over all processes

   355         # loop over all processes

   356         while r:

   356         while r:

   357             if pe.th32ParentProcessID == pid:

   357             if pe.th32ParentProcessID == pid:

   359                 return pe.th32ProcessID

   359                 return pe.th32ProcessID

   360             r = _kernel32.Process32Next(ph, ctypes.byref(pe))

   360             r = _kernel32.Process32Next(ph, ctypes.byref(pe))

   361     finally:

   361     finally:

   362         _kernel32.CloseHandle(ph)

   362         _kernel32.CloseHandle(ph)

   363     if _kernel32.GetLastError() != _ERROR_NO_MORE_FILES:

   363     if _kernel32.GetLastError() != _ERROR_NO_MORE_FILES:

   365     return None # no child found

   365     return None # no child found

   366 

   366 

   367 class _tochildpid(int): # pid is _DWORD, which always matches in an int

   367 class _tochildpid(int): # pid is _DWORD, which always matches in an int

   368     '''helper for spawndetached, returns the child pid on conversion to string

   368     '''helper for spawndetached, returns the child pid on conversion to string

   369 

   369 

   411 

   411 

   412     res = _kernel32.CreateProcessA(

   412     res = _kernel32.CreateProcessA(

   413         None, args, None, None, False, _CREATE_NO_WINDOW,

   413         None, args, None, None, False, _CREATE_NO_WINDOW,

   414         env, os.getcwd(), ctypes.byref(si), ctypes.byref(pi))

   414         env, os.getcwd(), ctypes.byref(si), ctypes.byref(pi))

   415     if not res:

   415     if not res:

   417 

   417 

   418     # _tochildpid because the process is the child of COMSPEC

   418     # _tochildpid because the process is the child of COMSPEC

   419     return _tochildpid(pi.dwProcessId)

   419     return _tochildpid(pi.dwProcessId)

   420 

   420 

   421 def unlink(f):

   421 def unlink(f):