comparison mercurial/win32.py @ 24418:a2285e2fc949 stable

win32: 'raise ctypes.WinError' -> 'raise ctypes.WinError()'

WinError is a function that creates an Error, not an Error itself.  This is a
partial backout of e34106fa0dc3.

24412:9372180b8c9b

    '''return full path of hg.exe'''
    size = 600
    buf = ctypes.create_string_buffer(size + 1)
    len = _kernel32.GetModuleFileNameA(None, ctypes.byref(buf), size)
    if len == 0:
        raise ctypes.WinError
    elif len == size:
        raise ctypes.WinError(_ERROR_INSUFFICIENT_BUFFER)
    return buf.value

def getuser():
    '''return name of current user'''
    size = _DWORD(300)
    buf = ctypes.create_string_buffer(size.value + 1)
    if not _advapi32.GetUserNameA(ctypes.byref(buf), ctypes.byref(size)):
        raise ctypes.WinError
    return buf.value

_signalhandler = []

def setsignalhandler():

    if _signalhandler:
        return # already registered
    h = _SIGNAL_HANDLER(handler)
    _signalhandler.append(h) # needed to prevent garbage collection
    if not _kernel32.SetConsoleCtrlHandler(h, True):
        raise ctypes.WinError

def hidewindow():

    def callback(hwnd, pid):
        wpid = _DWORD()

    pe = _tagPROCESSENTRY32()

    # create handle to list all processes
    ph = _kernel32.CreateToolhelp32Snapshot(_TH32CS_SNAPPROCESS, 0)
    if ph == _INVALID_HANDLE_VALUE:
        raise ctypes.WinError
    try:
        r = _kernel32.Process32First(ph, ctypes.byref(pe))
        # loop over all processes
        while r:
            if pe.th32ParentProcessID == pid:

                return pe.th32ProcessID
            r = _kernel32.Process32Next(ph, ctypes.byref(pe))
    finally:
        _kernel32.CloseHandle(ph)
    if _kernel32.GetLastError() != _ERROR_NO_MORE_FILES:
        raise ctypes.WinError
    return None # no child found

class _tochildpid(int): # pid is _DWORD, which always matches in an int
    '''helper for spawndetached, returns the child pid on conversion to string

    res = _kernel32.CreateProcessA(
        None, args, None, None, False, _CREATE_NO_WINDOW,
        env, os.getcwd(), ctypes.byref(si), ctypes.byref(pi))
    if not res:
        raise ctypes.WinError

    # _tochildpid because the process is the child of COMSPEC
    return _tochildpid(pi.dwProcessId)

def unlink(f):

24418:a2285e2fc949

    '''return full path of hg.exe'''
    size = 600
    buf = ctypes.create_string_buffer(size + 1)
    len = _kernel32.GetModuleFileNameA(None, ctypes.byref(buf), size)
    if len == 0:
        raise ctypes.WinError()
    elif len == size:
        raise ctypes.WinError(_ERROR_INSUFFICIENT_BUFFER)
    return buf.value

def getuser():
    '''return name of current user'''
    size = _DWORD(300)
    buf = ctypes.create_string_buffer(size.value + 1)
    if not _advapi32.GetUserNameA(ctypes.byref(buf), ctypes.byref(size)):
        raise ctypes.WinError()
    return buf.value

_signalhandler = []

def setsignalhandler():

    if _signalhandler:
        return # already registered
    h = _SIGNAL_HANDLER(handler)
    _signalhandler.append(h) # needed to prevent garbage collection
    if not _kernel32.SetConsoleCtrlHandler(h, True):
        raise ctypes.WinError()

def hidewindow():

    def callback(hwnd, pid):
        wpid = _DWORD()

    pe = _tagPROCESSENTRY32()

    # create handle to list all processes
    ph = _kernel32.CreateToolhelp32Snapshot(_TH32CS_SNAPPROCESS, 0)
    if ph == _INVALID_HANDLE_VALUE:
        raise ctypes.WinError()
    try:
        r = _kernel32.Process32First(ph, ctypes.byref(pe))
        # loop over all processes
        while r:
            if pe.th32ParentProcessID == pid:

                return pe.th32ProcessID
            r = _kernel32.Process32Next(ph, ctypes.byref(pe))
    finally:
        _kernel32.CloseHandle(ph)
    if _kernel32.GetLastError() != _ERROR_NO_MORE_FILES:
        raise ctypes.WinError()
    return None # no child found

class _tochildpid(int): # pid is _DWORD, which always matches in an int
    '''helper for spawndetached, returns the child pid on conversion to string

    res = _kernel32.CreateProcessA(
        None, args, None, None, False, _CREATE_NO_WINDOW,
        env, os.getcwd(), ctypes.byref(si), ctypes.byref(pi))
    if not res:
        raise ctypes.WinError()

    # _tochildpid because the process is the child of COMSPEC
    return _tochildpid(pi.dwProcessId)

def unlink(f):