本文整理汇总了Python中win32con.OPEN_EXISTING属性的典型用法代码示例。如果您正苦于以下问题:Python win32con.OPEN_EXISTING属性的具体用法?Python win32con.OPEN_EXISTING怎么用?Python win32con.OPEN_EXISTING使用的例子?那么, 这里精选的属性代码示例或许可以为您提供帮助。您也可以进一步了解该属性所在类win32con
的用法示例。
在下文中一共展示了win32con.OPEN_EXISTING属性的15个代码示例,这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞,您的评价将有助于系统推荐出更棒的Python代码示例。
示例1: _openHandle
# 需要导入模块: import win32con [as 别名]
# 或者: from win32con import OPEN_EXISTING [as 别名]
def _openHandle(path, bWriteAccess, bWriteShare,
logfunc = lambda s: None):
TIMEOUT, NUM_RETRIES = 10, 20
for retry_count in range(6):
try:
access_flag = win32con.GENERIC_READ | \
(bWriteAccess and win32con.GENERIC_WRITE or 0)
share_flag = win32con.FILE_SHARE_READ | \
(bWriteShare and win32con.FILE_SHARE_WRITE or 0)
handle = win32file.CreateFile(
path, access_flag, share_flag, None,
win32con.OPEN_EXISTING, win32con.FILE_ATTRIBUTE_NORMAL, None)
nth = { 0: 'first', 1:'second', 2:'third'}
logfunc("Opening [%s]: success at the %s iteration" %
(path, nth.get(retry_count, '%sth' % (retry_count+1))))
return handle
except pywintypes.error as e:
logfunc('Exception=>'+str(e))
if NUM_RETRIES/3 < retry_count:
bWriteShare = True
time.sleep(TIMEOUT / float(NUM_RETRIES))
else:
raise RuntimeError("Couldn't open handle for %s." % path)
示例2: SimpleFileDemo
# 需要导入模块: import win32con [as 别名]
# 或者: from win32con import OPEN_EXISTING [as 别名]
def SimpleFileDemo():
testName = os.path.join( win32api.GetTempPath(), "win32file_demo_test_file")
if os.path.exists(testName): os.unlink(testName)
# Open the file for writing.
handle = win32file.CreateFile(testName,
win32file.GENERIC_WRITE,
0,
None,
win32con.CREATE_NEW,
0,
None)
test_data = "Hello\0there".encode("ascii")
win32file.WriteFile(handle, test_data)
handle.Close()
# Open it for reading.
handle = win32file.CreateFile(testName, win32file.GENERIC_READ, 0, None, win32con.OPEN_EXISTING, 0, None)
rc, data = win32file.ReadFile(handle, 1024)
handle.Close()
if data == test_data:
print "Successfully wrote and read a file"
else:
raise Exception("Got different data back???")
os.unlink(testName)
示例3: testTransactNamedPipeBlocking
# 需要导入模块: import win32con [as 别名]
# 或者: from win32con import OPEN_EXISTING [as 别名]
def testTransactNamedPipeBlocking(self):
event = threading.Event()
self.startPipeServer(event)
open_mode = win32con.GENERIC_READ | win32con.GENERIC_WRITE
hpipe = win32file.CreateFile(self.pipename,
open_mode,
0, # no sharing
None, # default security
win32con.OPEN_EXISTING,
0, # win32con.FILE_FLAG_OVERLAPPED,
None)
# set to message mode.
win32pipe.SetNamedPipeHandleState(
hpipe, win32pipe.PIPE_READMODE_MESSAGE, None, None)
hr, got = win32pipe.TransactNamedPipe(hpipe, str2bytes("foo\0bar"), 1024, None)
self.failUnlessEqual(got, str2bytes("bar\0foo"))
event.wait(5)
self.failUnless(event.isSet(), "Pipe server thread didn't terminate")
示例4: testSimpleFiles
# 需要导入模块: import win32con [as 别名]
# 或者: from win32con import OPEN_EXISTING [as 别名]
def testSimpleFiles(self):
try:
fd, filename = tempfile.mkstemp()
except AttributeError:
self.fail("This test requires Python 2.3 or later")
os.close(fd)
os.unlink(filename)
handle = win32file.CreateFile(filename, win32file.GENERIC_WRITE, 0, None, win32con.CREATE_NEW, 0, None)
test_data = str2bytes("Hello\0there")
try:
win32file.WriteFile(handle, test_data)
handle.Close()
# Try and open for read
handle = win32file.CreateFile(filename, win32file.GENERIC_READ, 0, None, win32con.OPEN_EXISTING, 0, None)
rc, data = win32file.ReadFile(handle, 1024)
self.assertEquals(data, test_data)
finally:
handle.Close()
try:
os.unlink(filename)
except os.error:
pass
# A simple test using normal read/write operations.
示例5: setUp
# 需要导入模块: import win32con [as 别名]
# 或者: from win32con import OPEN_EXISTING [as 别名]
def setUp(self):
self.watcher_threads = []
self.watcher_thread_changes = []
self.dir_names = []
self.dir_handles = []
for i in range(self.num_test_dirs):
td = tempfile.mktemp("-test-directory-changes-%d" % i)
os.mkdir(td)
self.dir_names.append(td)
hdir = win32file.CreateFile(td,
ntsecuritycon.FILE_LIST_DIRECTORY,
win32con.FILE_SHARE_READ,
None, # security desc
win32con.OPEN_EXISTING,
win32con.FILE_FLAG_BACKUP_SEMANTICS |
win32con.FILE_FLAG_OVERLAPPED,
None)
self.dir_handles.append(hdir)
changes = []
t = threading.Thread(target=self._watcherThreadOverlapped,
args=(td, hdir, changes))
t.start()
self.watcher_threads.append(t)
self.watcher_thread_changes.append(changes)
示例6: __init__
# 需要导入模块: import win32con [as 别名]
# 或者: from win32con import OPEN_EXISTING [as 别名]
def __init__(self, filename):
self._hfile = win32file.CreateFile(filename,
win32con.GENERIC_READ | win32con.GENERIC_WRITE,
win32con.FILE_SHARE_READ | win32con.FILE_SHARE_WRITE,
win32security.SECURITY_ATTRIBUTES(),
win32con.OPEN_EXISTING,
win32con.FILE_FLAG_OVERLAPPED,
0)
self._read_ovrlpd = pywintypes.OVERLAPPED()
self._read_ovrlpd.hEvent = win32event.CreateEvent(None, True,
False, None)
self._write_ovrlpd = pywintypes.OVERLAPPED()
self._write_ovrlpd.hEvent = win32event.CreateEvent(None, True,
False, None)
self._bufs = []
self._n = 0
示例7: __init__
# 需要导入模块: import win32con [as 别名]
# 或者: from win32con import OPEN_EXISTING [as 别名]
def __init__(self, path):
if not isinstance(path, basestring):
raise TypeError("Path argument must be a basestring; instead"
" received %r" % (path,))
self.path = path
self.handle = win32file.CreateFile(
self.path,
0x0001, # FILE_LIST_DIRECTORY
win32con.FILE_SHARE_READ | win32con.FILE_SHARE_WRITE,
None,
win32con.OPEN_EXISTING,
win32con.FILE_FLAG_BACKUP_SEMANTICS | win32con.FILE_FLAG_OVERLAPPED,
None,
)
self.overlapped = win32file.OVERLAPPED()
self.overlapped.hEvent = win32event.CreateEvent(None, True, 0, None)
示例8: changeTimestamp
# 需要导入模块: import win32con [as 别名]
# 或者: from win32con import OPEN_EXISTING [as 别名]
def changeTimestamp(path,fileName,daylimit):
print '[*] Inside changeTimestamp'
dates = {}
fileName = os.path.join(path, fileName)
dates['tdata'] = getDate(fileName,daylimit)
dates['ctime'] = datetime.utcfromtimestamp(os.path.getctime(fileName))
# print "[*] Original time: ",str(dates['ctime'])
if __use_win_32:
filehandle = win32file.CreateFile(fileName, win32file.GENERIC_WRITE, 0, None, win32con.OPEN_EXISTING, 0, None)
win32file.SetFileTime(filehandle, dates['tdata'],dates['tdata'],dates['tdata'])
filehandle.close()
print "[*] Timestamps changed!!"
else:
os.utime(fileName, (time.mktime(dates['tdata'].utctimetuple()),)*2)
dates['mtime'] = datetime.utcfromtimestamp(os.path.getmtime(fileName))
# print "[*] Modified time: ",str(dates['mtime'])
示例9: run
# 需要导入模块: import win32con [as 别名]
# 或者: from win32con import OPEN_EXISTING [as 别名]
def run(self):
#open file/device
try:
handle = win32file.CreateFile(
self.devicePath,
win32con.GENERIC_READ | win32con.GENERIC_WRITE,
win32con.FILE_SHARE_READ | win32con.FILE_SHARE_WRITE,
None, # no security
win32con.OPEN_EXISTING,
win32con.FILE_ATTRIBUTE_NORMAL | win32con.FILE_FLAG_OVERLAPPED,
0
)
except pywintypes.error as (errno, function, strerror):
self.lockObject.release()
eg.PrintError(self.text.errorOpen + self.deviceName + " (" + strerror + ")")
return
示例10: findVolumeGuids
# 需要导入模块: import win32con [as 别名]
# 或者: from win32con import OPEN_EXISTING [as 别名]
def findVolumeGuids():
DiskExtent = collections.namedtuple(
'DiskExtent', ['DiskNumber', 'StartingOffset', 'ExtentLength'])
Volume = collections.namedtuple(
'Volume', ['Guid', 'MediaType', 'DosDevice', 'Extents'])
found = []
h, guid = FindFirstVolume()
while h and guid:
#print (guid)
#print (guid, win32file.GetDriveType(guid),
# win32file.QueryDosDevice(guid[4:-1]))
hVolume = win32file.CreateFile(
guid[:-1], win32con.GENERIC_READ,
win32con.FILE_SHARE_READ | win32con.FILE_SHARE_WRITE,
None, win32con.OPEN_EXISTING, win32con.FILE_ATTRIBUTE_NORMAL, None)
extents = []
driveType = win32file.GetDriveType(guid)
if driveType in [win32con.DRIVE_REMOVABLE, win32con.DRIVE_FIXED]:
x = win32file.DeviceIoControl(
hVolume, winioctlcon.IOCTL_VOLUME_GET_VOLUME_DISK_EXTENTS,
None, 512, None)
instream = io.BytesIO(x)
numRecords = struct.unpack('<q', instream.read(8))[0]
fmt = '<qqq'
sz = struct.calcsize(fmt)
while 1:
b = instream.read(sz)
if len(b) < sz:
break
rec = struct.unpack(fmt, b)
extents.append( DiskExtent(*rec) )
vinfo = Volume(guid, driveType, win32file.QueryDosDevice(guid[4:-1]),
extents)
found.append(vinfo)
guid = FindNextVolume(h)
return found
示例11: HttpExtensionProc
# 需要导入模块: import win32con [as 别名]
# 或者: from win32con import OPEN_EXISTING [as 别名]
def HttpExtensionProc(self, ecb):
# NOTE: If you use a ThreadPoolExtension, you must still perform
# this check in HttpExtensionProc - raising the exception from
# The "Dispatch" method will just cause the exception to be
# rendered to the browser.
if self.reload_watcher.change_detected:
print "Doing reload"
raise InternalReloadException
if ecb.GetServerVariable("URL").endswith("test.py"):
file_flags = win32con.FILE_FLAG_SEQUENTIAL_SCAN | win32con.FILE_FLAG_OVERLAPPED
hfile = win32file.CreateFile(__file__, win32con.GENERIC_READ,
0, None, win32con.OPEN_EXISTING,
file_flags, None)
flags = isapicon.HSE_IO_ASYNC | isapicon.HSE_IO_DISCONNECT_AFTER_SEND | \
isapicon.HSE_IO_SEND_HEADERS
# We pass hFile to the callback simply as a way of keeping it alive
# for the duration of the transmission
try:
ecb.TransmitFile(TransmitFileCallback, hfile,
int(hfile),
"200 OK",
0, 0, None, None, flags)
except:
# Errors keep this source file open!
hfile.Close()
raise
else:
# default response
ecb.SendResponseHeaders("200 OK", "Content-Type: text/html\r\n\r\n", 0)
print >> ecb, "<HTML><BODY>"
print >> ecb, "The root of this site is at", ecb.MapURLToPath("/")
print >> ecb, "</BODY></HTML>"
ecb.close()
return isapicon.HSE_STATUS_SUCCESS
示例12: DemoCopyFile
# 需要导入模块: import win32con [as 别名]
# 或者: from win32con import OPEN_EXISTING [as 别名]
def DemoCopyFile():
# Create a file on the device, and write a string.
cefile = wincerapi.CeCreateFile("TestPython", win32con.GENERIC_WRITE, 0, None, win32con.OPEN_ALWAYS, 0, None)
wincerapi.CeWriteFile(cefile, "Hello from Python")
cefile.Close()
# reopen the file and check the data.
cefile = wincerapi.CeCreateFile("TestPython", win32con.GENERIC_READ, 0, None, win32con.OPEN_EXISTING, 0, None)
if wincerapi.CeReadFile(cefile, 100) != "Hello from Python":
print "Couldnt read the data from the device!"
cefile.Close()
# Delete the test file
wincerapi.CeDeleteFile("TestPython")
print "Created, wrote to, read from and deleted a test file!"
示例13: testTransactNamedPipeAsync
# 需要导入模块: import win32con [as 别名]
# 或者: from win32con import OPEN_EXISTING [as 别名]
def testTransactNamedPipeAsync(self):
event = threading.Event()
overlapped = pywintypes.OVERLAPPED()
overlapped.hEvent = win32event.CreateEvent(None, 0, 0, None)
self.startPipeServer(event, 0.5)
open_mode = win32con.GENERIC_READ | win32con.GENERIC_WRITE
hpipe = win32file.CreateFile(self.pipename,
open_mode,
0, # no sharing
None, # default security
win32con.OPEN_EXISTING,
win32con.FILE_FLAG_OVERLAPPED,
None)
# set to message mode.
win32pipe.SetNamedPipeHandleState(
hpipe, win32pipe.PIPE_READMODE_MESSAGE, None, None)
buffer = win32file.AllocateReadBuffer(1024)
hr, got = win32pipe.TransactNamedPipe(hpipe, str2bytes("foo\0bar"), buffer, overlapped)
self.failUnlessEqual(hr, winerror.ERROR_IO_PENDING)
nbytes = win32file.GetOverlappedResult(hpipe, overlapped, True)
got = buffer[:nbytes]
self.failUnlessEqual(got, str2bytes("bar\0foo"))
event.wait(5)
self.failUnless(event.isSet(), "Pipe server thread didn't terminate")
示例14: testSimpleOverlapped
# 需要导入模块: import win32con [as 别名]
# 或者: from win32con import OPEN_EXISTING [as 别名]
def testSimpleOverlapped(self):
# Create a file in the %TEMP% directory.
import win32event
testName = os.path.join( win32api.GetTempPath(), "win32filetest.dat" )
desiredAccess = win32file.GENERIC_WRITE
overlapped = pywintypes.OVERLAPPED()
evt = win32event.CreateEvent(None, 0, 0, None)
overlapped.hEvent = evt
# Create the file and write shit-loads of data to it.
h = win32file.CreateFile( testName, desiredAccess, 0, None, win32file.CREATE_ALWAYS, 0, 0)
chunk_data = str2bytes("z") * 0x8000
num_loops = 512
expected_size = num_loops * len(chunk_data)
for i in range(num_loops):
win32file.WriteFile(h, chunk_data, overlapped)
win32event.WaitForSingleObject(overlapped.hEvent, win32event.INFINITE)
overlapped.Offset = overlapped.Offset + len(chunk_data)
h.Close()
# Now read the data back overlapped
overlapped = pywintypes.OVERLAPPED()
evt = win32event.CreateEvent(None, 0, 0, None)
overlapped.hEvent = evt
desiredAccess = win32file.GENERIC_READ
h = win32file.CreateFile( testName, desiredAccess, 0, None, win32file.OPEN_EXISTING, 0, 0)
buffer = win32file.AllocateReadBuffer(0xFFFF)
while 1:
try:
hr, data = win32file.ReadFile(h, buffer, overlapped)
win32event.WaitForSingleObject(overlapped.hEvent, win32event.INFINITE)
overlapped.Offset = overlapped.Offset + len(data)
if not data is buffer:
self.fail("Unexpected result from ReadFile - should be the same buffer we passed it")
except win32api.error:
break
h.Close()
示例15: TestDeviceNotifications
# 需要导入模块: import win32con [as 别名]
# 或者: from win32con import OPEN_EXISTING [as 别名]
def TestDeviceNotifications(dir_names):
wc = win32gui.WNDCLASS()
wc.lpszClassName = 'test_devicenotify'
wc.style = win32con.CS_GLOBALCLASS|win32con.CS_VREDRAW | win32con.CS_HREDRAW
wc.hbrBackground = win32con.COLOR_WINDOW+1
wc.lpfnWndProc={win32con.WM_DEVICECHANGE:OnDeviceChange}
class_atom=win32gui.RegisterClass(wc)
hwnd = win32gui.CreateWindow(wc.lpszClassName,
'Testing some devices',
# no need for it to be visible.
win32con.WS_CAPTION,
100,100,900,900, 0, 0, 0, None)
hdevs = []
# Watch for all USB device notifications
filter = win32gui_struct.PackDEV_BROADCAST_DEVICEINTERFACE(
GUID_DEVINTERFACE_USB_DEVICE)
hdev = win32gui.RegisterDeviceNotification(hwnd, filter,
win32con.DEVICE_NOTIFY_WINDOW_HANDLE)
hdevs.append(hdev)
# and create handles for all specified directories
for d in dir_names:
hdir = win32file.CreateFile(d,
winnt.FILE_LIST_DIRECTORY,
winnt.FILE_SHARE_READ | winnt.FILE_SHARE_WRITE | winnt.FILE_SHARE_DELETE,
None, # security attributes
win32con.OPEN_EXISTING,
win32con.FILE_FLAG_BACKUP_SEMANTICS | # required privileges: SE_BACKUP_NAME and SE_RESTORE_NAME.
win32con.FILE_FLAG_OVERLAPPED,
None)
filter = win32gui_struct.PackDEV_BROADCAST_HANDLE(hdir)
hdev = win32gui.RegisterDeviceNotification(hwnd, filter,
win32con.DEVICE_NOTIFY_WINDOW_HANDLE)
hdevs.append(hdev)
# now start a message pump and wait for messages to be delivered.
print "Watching", len(hdevs), "handles - press Ctrl+C to terminate, or"
print "add and remove some USB devices..."
if not dir_names:
print "(Note you can also pass paths to watch on the command-line - eg,"
print "pass the root of an inserted USB stick to see events specific to"
print "that volume)"
while 1:
win32gui.PumpWaitingMessages()
time.sleep(0.01)
win32gui.DestroyWindow(hwnd)
win32gui.UnregisterClass(wc.lpszClassName, None)