def _getTextRange(self, start, end):
bufLen = (end - start) + 1
textRange = TextRangeStruct()
textRange.chrg.cpMin = start
textRange.chrg.cpMax = end
processHandle = self.obj.processHandle
internalBuf = winKernel.virtualAllocEx(processHandle, None, bufLen,
winKernel.MEM_COMMIT,
winKernel.PAGE_READWRITE)
try:
textRange.lpstrText = internalBuf
internalTextRange = winKernel.virtualAllocEx(
processHandle, None, ctypes.sizeof(textRange),
winKernel.MEM_COMMIT, winKernel.PAGE_READWRITE)
try:
winKernel.writeProcessMemory(processHandle, internalTextRange,
ctypes.byref(textRange),
ctypes.sizeof(textRange), None)
numBytes = watchdog.cancellableSendMessage(
self.obj.windowHandle, SCI_GETTEXTRANGE, 0,
internalTextRange)
finally:
winKernel.virtualFreeEx(processHandle, internalTextRange, 0,
winKernel.MEM_RELEASE)
buf = ctypes.create_string_buffer(bufLen)
winKernel.readProcessMemory(processHandle, internalBuf, buf,
bufLen, None)
finally:
winKernel.virtualFreeEx(processHandle, internalBuf, 0,
winKernel.MEM_RELEASE)
return textUtils.getTextFromRawBytes(buf.raw,
numChars=numBytes,
encoding=self.encoding,
errorsFallback="surrogateescape")
def _getTextRange(self, start, end):
if self.obj.editAPIVersion >= 2:
# Calculate a buffer size that is twice the size of the text range and a NULL terminating character.
# As unicode characters are two bytes in size,
# this ensures that our buffer can hold both ANSI and unicode character strings.
bufLen = ((end - start) + 1) * 2
# Even though this can return unicode text, we use the ANSI version of the structure.
# Using the unicode structure isn't strictly necessary and saves us some confusion
textRange = TextRangeStruct()
textRange.chrg.cpMin = start
textRange.chrg.cpMax = end
processHandle = self.obj.processHandle
internalBuf = winKernel.virtualAllocEx(processHandle, None, bufLen,
winKernel.MEM_COMMIT,
winKernel.PAGE_READWRITE)
try:
textRange.lpstrText = internalBuf
internalTextRange = winKernel.virtualAllocEx(
processHandle, None, ctypes.sizeof(textRange),
winKernel.MEM_COMMIT, winKernel.PAGE_READWRITE)
try:
winKernel.writeProcessMemory(processHandle,
internalTextRange,
ctypes.byref(textRange),
ctypes.sizeof(textRange),
None)
# EM_GETTEXTRANGE returns the number of characters copied,
# not including the terminating null character.
# See https://docs.microsoft.com/en-us/windows/desktop/controls/em-gettextrange
numChars = watchdog.cancellableSendMessage(
self.obj.windowHandle, EM_GETTEXTRANGE, 0,
internalTextRange)
finally:
winKernel.virtualFreeEx(processHandle, internalTextRange,
0, winKernel.MEM_RELEASE)
buf = ctypes.create_string_buffer(bufLen)
# Copy the text in the text range to our own buffer.
winKernel.readProcessMemory(processHandle, internalBuf, buf,
bufLen, None)
finally:
winKernel.virtualFreeEx(processHandle, internalBuf, 0,
winKernel.MEM_RELEASE)
# Find out which encoding to use to decode the bytes in the buffer.
if (
# The window is unicode, the text range contains multi byte characters.
self.obj.isWindowUnicode):
encoding = textUtils.WCHAR_ENCODING
else:
# De encoding will be determined by L{textUtils.getTextFromRawBytes}
encoding = None
text = textUtils.getTextFromRawBytes(buf.raw, numChars, encoding)
# #4095: Some protected richEdit controls do not hide their password characters.
# We do this specifically.
# Note that protected standard edit controls get characters hidden in _getStoryText.
if text and controlTypes.State.PROTECTED in self.obj.states:
text = u'*' * len(text)
else:
text = super(EditTextInfo, self)._getTextRange(start, end)
return text
def getAccessibleTextRange(self,start,end): length=((end+1)-start) if length<=0: return u"" # Use a string buffer, as from an unicode buffer, we can't get the raw data. buf = create_string_buffer((length +1) * 2) bridgeDll.getAccessibleTextRange(self.vmID, self.accContext, start, end, buf, length) return textUtils.getTextFromRawBytes(buf.raw, numChars=length, encoding=textUtils.WCHAR_ENCODING)
def ReadConsoleOutputCharacter(handle, length, x, y):
# Use a string buffer, as from an unicode buffer, we can't get the raw data.
buf = create_string_buffer(length * 2)
numCharsRead = c_int()
if windll.kernel32.ReadConsoleOutputCharacterW(handle, buf, length,
COORD(x, y),
byref(numCharsRead)) == 0:
raise WinError()
return textUtils.getTextFromRawBytes(buf.raw,
numChars=numCharsRead.value,
encoding=textUtils.WCHAR_ENCODING)
