679 lines
21 KiB
Python
679 lines
21 KiB
Python
"""
|
|
Pyperclip
|
|
|
|
A cross-platform clipboard module for Python,
|
|
with copy & paste functions for plain text.
|
|
By Al Sweigart al@inventwithpython.com
|
|
BSD License
|
|
|
|
Usage:
|
|
import pyperclip
|
|
pyperclip.copy('The text to be copied to the clipboard.')
|
|
spam = pyperclip.paste()
|
|
|
|
if not pyperclip.is_available():
|
|
print("Copy functionality unavailable!")
|
|
|
|
On Windows, no additional modules are needed.
|
|
On Mac, the pyobjc module is used, falling back to the pbcopy and pbpaste cli
|
|
commands. (These commands should come with OS X.).
|
|
On Linux, install xclip or xsel via package manager. For example, in Debian:
|
|
sudo apt-get install xclip
|
|
sudo apt-get install xsel
|
|
|
|
Otherwise on Linux, you will need the PyQt5 modules installed.
|
|
|
|
This module does not work with PyGObject yet.
|
|
|
|
Cygwin is currently not supported.
|
|
|
|
Security Note: This module runs programs with these names:
|
|
- which
|
|
- where
|
|
- pbcopy
|
|
- pbpaste
|
|
- xclip
|
|
- xsel
|
|
- klipper
|
|
- qdbus
|
|
A malicious user could rename or add programs with these names, tricking
|
|
Pyperclip into running them with whatever permissions the Python process has.
|
|
|
|
"""
|
|
|
|
__version__ = "1.7.0"
|
|
|
|
|
|
import contextlib
|
|
import ctypes
|
|
from ctypes import (
|
|
c_size_t,
|
|
c_wchar,
|
|
c_wchar_p,
|
|
get_errno,
|
|
sizeof,
|
|
)
|
|
import os
|
|
import platform
|
|
from shutil import which
|
|
import subprocess
|
|
import time
|
|
import warnings
|
|
|
|
from pandas.errors import (
|
|
PyperclipException,
|
|
PyperclipWindowsException,
|
|
)
|
|
from pandas.util._exceptions import find_stack_level
|
|
|
|
# `import PyQt4` sys.exit()s if DISPLAY is not in the environment.
|
|
# Thus, we need to detect the presence of $DISPLAY manually
|
|
# and not load PyQt4 if it is absent.
|
|
HAS_DISPLAY = os.getenv("DISPLAY")
|
|
|
|
EXCEPT_MSG = """
|
|
Pyperclip could not find a copy/paste mechanism for your system.
|
|
For more information, please visit
|
|
https://pyperclip.readthedocs.io/en/latest/#not-implemented-error
|
|
"""
|
|
|
|
ENCODING = "utf-8"
|
|
|
|
# The "which" unix command finds where a command is.
|
|
if platform.system() == "Windows":
|
|
WHICH_CMD = "where"
|
|
else:
|
|
WHICH_CMD = "which"
|
|
|
|
|
|
def _executable_exists(name):
|
|
return (
|
|
subprocess.call(
|
|
[WHICH_CMD, name], stdout=subprocess.PIPE, stderr=subprocess.PIPE
|
|
)
|
|
== 0
|
|
)
|
|
|
|
|
|
def _stringifyText(text) -> str:
|
|
acceptedTypes = (str, int, float, bool)
|
|
if not isinstance(text, acceptedTypes):
|
|
raise PyperclipException(
|
|
f"only str, int, float, and bool values "
|
|
f"can be copied to the clipboard, not {type(text).__name__}"
|
|
)
|
|
return str(text)
|
|
|
|
|
|
def init_osx_pbcopy_clipboard():
|
|
def copy_osx_pbcopy(text):
|
|
text = _stringifyText(text) # Converts non-str values to str.
|
|
with subprocess.Popen(
|
|
["pbcopy", "w"], stdin=subprocess.PIPE, close_fds=True
|
|
) as p:
|
|
p.communicate(input=text.encode(ENCODING))
|
|
|
|
def paste_osx_pbcopy():
|
|
with subprocess.Popen(
|
|
["pbpaste", "r"], stdout=subprocess.PIPE, close_fds=True
|
|
) as p:
|
|
stdout = p.communicate()[0]
|
|
return stdout.decode(ENCODING)
|
|
|
|
return copy_osx_pbcopy, paste_osx_pbcopy
|
|
|
|
|
|
def init_osx_pyobjc_clipboard():
|
|
def copy_osx_pyobjc(text):
|
|
"""Copy string argument to clipboard"""
|
|
text = _stringifyText(text) # Converts non-str values to str.
|
|
newStr = Foundation.NSString.stringWithString_(text).nsstring()
|
|
newData = newStr.dataUsingEncoding_(Foundation.NSUTF8StringEncoding)
|
|
board = AppKit.NSPasteboard.generalPasteboard()
|
|
board.declareTypes_owner_([AppKit.NSStringPboardType], None)
|
|
board.setData_forType_(newData, AppKit.NSStringPboardType)
|
|
|
|
def paste_osx_pyobjc():
|
|
"""Returns contents of clipboard"""
|
|
board = AppKit.NSPasteboard.generalPasteboard()
|
|
content = board.stringForType_(AppKit.NSStringPboardType)
|
|
return content
|
|
|
|
return copy_osx_pyobjc, paste_osx_pyobjc
|
|
|
|
|
|
def init_qt_clipboard():
|
|
global QApplication
|
|
# $DISPLAY should exist
|
|
|
|
# Try to import from qtpy, but if that fails try PyQt5 then PyQt4
|
|
try:
|
|
from qtpy.QtWidgets import QApplication
|
|
except ImportError:
|
|
try:
|
|
from PyQt5.QtWidgets import QApplication
|
|
except ImportError:
|
|
from PyQt4.QtGui import QApplication
|
|
|
|
app = QApplication.instance()
|
|
if app is None:
|
|
app = QApplication([])
|
|
|
|
def copy_qt(text):
|
|
text = _stringifyText(text) # Converts non-str values to str.
|
|
cb = app.clipboard()
|
|
cb.setText(text)
|
|
|
|
def paste_qt() -> str:
|
|
cb = app.clipboard()
|
|
return str(cb.text())
|
|
|
|
return copy_qt, paste_qt
|
|
|
|
|
|
def init_xclip_clipboard():
|
|
DEFAULT_SELECTION = "c"
|
|
PRIMARY_SELECTION = "p"
|
|
|
|
def copy_xclip(text, primary=False):
|
|
text = _stringifyText(text) # Converts non-str values to str.
|
|
selection = DEFAULT_SELECTION
|
|
if primary:
|
|
selection = PRIMARY_SELECTION
|
|
with subprocess.Popen(
|
|
["xclip", "-selection", selection], stdin=subprocess.PIPE, close_fds=True
|
|
) as p:
|
|
p.communicate(input=text.encode(ENCODING))
|
|
|
|
def paste_xclip(primary=False):
|
|
selection = DEFAULT_SELECTION
|
|
if primary:
|
|
selection = PRIMARY_SELECTION
|
|
with subprocess.Popen(
|
|
["xclip", "-selection", selection, "-o"],
|
|
stdout=subprocess.PIPE,
|
|
stderr=subprocess.PIPE,
|
|
close_fds=True,
|
|
) as p:
|
|
stdout = p.communicate()[0]
|
|
# Intentionally ignore extraneous output on stderr when clipboard is empty
|
|
return stdout.decode(ENCODING)
|
|
|
|
return copy_xclip, paste_xclip
|
|
|
|
|
|
def init_xsel_clipboard():
|
|
DEFAULT_SELECTION = "-b"
|
|
PRIMARY_SELECTION = "-p"
|
|
|
|
def copy_xsel(text, primary=False):
|
|
text = _stringifyText(text) # Converts non-str values to str.
|
|
selection_flag = DEFAULT_SELECTION
|
|
if primary:
|
|
selection_flag = PRIMARY_SELECTION
|
|
with subprocess.Popen(
|
|
["xsel", selection_flag, "-i"], stdin=subprocess.PIPE, close_fds=True
|
|
) as p:
|
|
p.communicate(input=text.encode(ENCODING))
|
|
|
|
def paste_xsel(primary=False):
|
|
selection_flag = DEFAULT_SELECTION
|
|
if primary:
|
|
selection_flag = PRIMARY_SELECTION
|
|
with subprocess.Popen(
|
|
["xsel", selection_flag, "-o"], stdout=subprocess.PIPE, close_fds=True
|
|
) as p:
|
|
stdout = p.communicate()[0]
|
|
return stdout.decode(ENCODING)
|
|
|
|
return copy_xsel, paste_xsel
|
|
|
|
|
|
def init_klipper_clipboard():
|
|
def copy_klipper(text):
|
|
text = _stringifyText(text) # Converts non-str values to str.
|
|
with subprocess.Popen(
|
|
[
|
|
"qdbus",
|
|
"org.kde.klipper",
|
|
"/klipper",
|
|
"setClipboardContents",
|
|
text.encode(ENCODING),
|
|
],
|
|
stdin=subprocess.PIPE,
|
|
close_fds=True,
|
|
) as p:
|
|
p.communicate(input=None)
|
|
|
|
def paste_klipper():
|
|
with subprocess.Popen(
|
|
["qdbus", "org.kde.klipper", "/klipper", "getClipboardContents"],
|
|
stdout=subprocess.PIPE,
|
|
close_fds=True,
|
|
) as p:
|
|
stdout = p.communicate()[0]
|
|
|
|
# Workaround for https://bugs.kde.org/show_bug.cgi?id=342874
|
|
# TODO: https://github.com/asweigart/pyperclip/issues/43
|
|
clipboardContents = stdout.decode(ENCODING)
|
|
# even if blank, Klipper will append a newline at the end
|
|
assert len(clipboardContents) > 0
|
|
# make sure that newline is there
|
|
assert clipboardContents.endswith("\n")
|
|
if clipboardContents.endswith("\n"):
|
|
clipboardContents = clipboardContents[:-1]
|
|
return clipboardContents
|
|
|
|
return copy_klipper, paste_klipper
|
|
|
|
|
|
def init_dev_clipboard_clipboard():
|
|
def copy_dev_clipboard(text):
|
|
text = _stringifyText(text) # Converts non-str values to str.
|
|
if text == "":
|
|
warnings.warn(
|
|
"Pyperclip cannot copy a blank string to the clipboard on Cygwin. "
|
|
"This is effectively a no-op.",
|
|
stacklevel=find_stack_level(),
|
|
)
|
|
if "\r" in text:
|
|
warnings.warn(
|
|
"Pyperclip cannot handle \\r characters on Cygwin.",
|
|
stacklevel=find_stack_level(),
|
|
)
|
|
|
|
with open("/dev/clipboard", "w") as fd:
|
|
fd.write(text)
|
|
|
|
def paste_dev_clipboard() -> str:
|
|
with open("/dev/clipboard") as fd:
|
|
content = fd.read()
|
|
return content
|
|
|
|
return copy_dev_clipboard, paste_dev_clipboard
|
|
|
|
|
|
def init_no_clipboard():
|
|
class ClipboardUnavailable:
|
|
def __call__(self, *args, **kwargs):
|
|
raise PyperclipException(EXCEPT_MSG)
|
|
|
|
def __bool__(self) -> bool:
|
|
return False
|
|
|
|
return ClipboardUnavailable(), ClipboardUnavailable()
|
|
|
|
|
|
# Windows-related clipboard functions:
|
|
class CheckedCall:
|
|
def __init__(self, f) -> None:
|
|
super().__setattr__("f", f)
|
|
|
|
def __call__(self, *args):
|
|
ret = self.f(*args)
|
|
if not ret and get_errno():
|
|
raise PyperclipWindowsException("Error calling " + self.f.__name__)
|
|
return ret
|
|
|
|
def __setattr__(self, key, value):
|
|
setattr(self.f, key, value)
|
|
|
|
|
|
def init_windows_clipboard():
|
|
global HGLOBAL, LPVOID, DWORD, LPCSTR, INT
|
|
global HWND, HINSTANCE, HMENU, BOOL, UINT, HANDLE
|
|
from ctypes.wintypes import (
|
|
BOOL,
|
|
DWORD,
|
|
HANDLE,
|
|
HGLOBAL,
|
|
HINSTANCE,
|
|
HMENU,
|
|
HWND,
|
|
INT,
|
|
LPCSTR,
|
|
LPVOID,
|
|
UINT,
|
|
)
|
|
|
|
windll = ctypes.windll
|
|
msvcrt = ctypes.CDLL("msvcrt")
|
|
|
|
safeCreateWindowExA = CheckedCall(windll.user32.CreateWindowExA)
|
|
safeCreateWindowExA.argtypes = [
|
|
DWORD,
|
|
LPCSTR,
|
|
LPCSTR,
|
|
DWORD,
|
|
INT,
|
|
INT,
|
|
INT,
|
|
INT,
|
|
HWND,
|
|
HMENU,
|
|
HINSTANCE,
|
|
LPVOID,
|
|
]
|
|
safeCreateWindowExA.restype = HWND
|
|
|
|
safeDestroyWindow = CheckedCall(windll.user32.DestroyWindow)
|
|
safeDestroyWindow.argtypes = [HWND]
|
|
safeDestroyWindow.restype = BOOL
|
|
|
|
OpenClipboard = windll.user32.OpenClipboard
|
|
OpenClipboard.argtypes = [HWND]
|
|
OpenClipboard.restype = BOOL
|
|
|
|
safeCloseClipboard = CheckedCall(windll.user32.CloseClipboard)
|
|
safeCloseClipboard.argtypes = []
|
|
safeCloseClipboard.restype = BOOL
|
|
|
|
safeEmptyClipboard = CheckedCall(windll.user32.EmptyClipboard)
|
|
safeEmptyClipboard.argtypes = []
|
|
safeEmptyClipboard.restype = BOOL
|
|
|
|
safeGetClipboardData = CheckedCall(windll.user32.GetClipboardData)
|
|
safeGetClipboardData.argtypes = [UINT]
|
|
safeGetClipboardData.restype = HANDLE
|
|
|
|
safeSetClipboardData = CheckedCall(windll.user32.SetClipboardData)
|
|
safeSetClipboardData.argtypes = [UINT, HANDLE]
|
|
safeSetClipboardData.restype = HANDLE
|
|
|
|
safeGlobalAlloc = CheckedCall(windll.kernel32.GlobalAlloc)
|
|
safeGlobalAlloc.argtypes = [UINT, c_size_t]
|
|
safeGlobalAlloc.restype = HGLOBAL
|
|
|
|
safeGlobalLock = CheckedCall(windll.kernel32.GlobalLock)
|
|
safeGlobalLock.argtypes = [HGLOBAL]
|
|
safeGlobalLock.restype = LPVOID
|
|
|
|
safeGlobalUnlock = CheckedCall(windll.kernel32.GlobalUnlock)
|
|
safeGlobalUnlock.argtypes = [HGLOBAL]
|
|
safeGlobalUnlock.restype = BOOL
|
|
|
|
wcslen = CheckedCall(msvcrt.wcslen)
|
|
wcslen.argtypes = [c_wchar_p]
|
|
wcslen.restype = UINT
|
|
|
|
GMEM_MOVEABLE = 0x0002
|
|
CF_UNICODETEXT = 13
|
|
|
|
@contextlib.contextmanager
|
|
def window():
|
|
"""
|
|
Context that provides a valid Windows hwnd.
|
|
"""
|
|
# we really just need the hwnd, so setting "STATIC"
|
|
# as predefined lpClass is just fine.
|
|
hwnd = safeCreateWindowExA(
|
|
0, b"STATIC", None, 0, 0, 0, 0, 0, None, None, None, None
|
|
)
|
|
try:
|
|
yield hwnd
|
|
finally:
|
|
safeDestroyWindow(hwnd)
|
|
|
|
@contextlib.contextmanager
|
|
def clipboard(hwnd):
|
|
"""
|
|
Context manager that opens the clipboard and prevents
|
|
other applications from modifying the clipboard content.
|
|
"""
|
|
# We may not get the clipboard handle immediately because
|
|
# some other application is accessing it (?)
|
|
# We try for at least 500ms to get the clipboard.
|
|
t = time.time() + 0.5
|
|
success = False
|
|
while time.time() < t:
|
|
success = OpenClipboard(hwnd)
|
|
if success:
|
|
break
|
|
time.sleep(0.01)
|
|
if not success:
|
|
raise PyperclipWindowsException("Error calling OpenClipboard")
|
|
|
|
try:
|
|
yield
|
|
finally:
|
|
safeCloseClipboard()
|
|
|
|
def copy_windows(text):
|
|
# This function is heavily based on
|
|
# http://msdn.com/ms649016#_win32_Copying_Information_to_the_Clipboard
|
|
|
|
text = _stringifyText(text) # Converts non-str values to str.
|
|
|
|
with window() as hwnd:
|
|
# http://msdn.com/ms649048
|
|
# If an application calls OpenClipboard with hwnd set to NULL,
|
|
# EmptyClipboard sets the clipboard owner to NULL;
|
|
# this causes SetClipboardData to fail.
|
|
# => We need a valid hwnd to copy something.
|
|
with clipboard(hwnd):
|
|
safeEmptyClipboard()
|
|
|
|
if text:
|
|
# http://msdn.com/ms649051
|
|
# If the hMem parameter identifies a memory object,
|
|
# the object must have been allocated using the
|
|
# function with the GMEM_MOVEABLE flag.
|
|
count = wcslen(text) + 1
|
|
handle = safeGlobalAlloc(GMEM_MOVEABLE, count * sizeof(c_wchar))
|
|
locked_handle = safeGlobalLock(handle)
|
|
|
|
ctypes.memmove(
|
|
c_wchar_p(locked_handle),
|
|
c_wchar_p(text),
|
|
count * sizeof(c_wchar),
|
|
)
|
|
|
|
safeGlobalUnlock(handle)
|
|
safeSetClipboardData(CF_UNICODETEXT, handle)
|
|
|
|
def paste_windows():
|
|
with clipboard(None):
|
|
handle = safeGetClipboardData(CF_UNICODETEXT)
|
|
if not handle:
|
|
# GetClipboardData may return NULL with errno == NO_ERROR
|
|
# if the clipboard is empty.
|
|
# (Also, it may return a handle to an empty buffer,
|
|
# but technically that's not empty)
|
|
return ""
|
|
return c_wchar_p(handle).value
|
|
|
|
return copy_windows, paste_windows
|
|
|
|
|
|
def init_wsl_clipboard():
|
|
def copy_wsl(text):
|
|
text = _stringifyText(text) # Converts non-str values to str.
|
|
with subprocess.Popen(["clip.exe"], stdin=subprocess.PIPE, close_fds=True) as p:
|
|
p.communicate(input=text.encode(ENCODING))
|
|
|
|
def paste_wsl():
|
|
with subprocess.Popen(
|
|
["powershell.exe", "-command", "Get-Clipboard"],
|
|
stdout=subprocess.PIPE,
|
|
stderr=subprocess.PIPE,
|
|
close_fds=True,
|
|
) as p:
|
|
stdout = p.communicate()[0]
|
|
# WSL appends "\r\n" to the contents.
|
|
return stdout[:-2].decode(ENCODING)
|
|
|
|
return copy_wsl, paste_wsl
|
|
|
|
|
|
# Automatic detection of clipboard mechanisms
|
|
# and importing is done in determine_clipboard():
|
|
def determine_clipboard():
|
|
"""
|
|
Determine the OS/platform and set the copy() and paste() functions
|
|
accordingly.
|
|
"""
|
|
global Foundation, AppKit, qtpy, PyQt4, PyQt5
|
|
|
|
# Setup for the CYGWIN platform:
|
|
if (
|
|
"cygwin" in platform.system().lower()
|
|
): # Cygwin has a variety of values returned by platform.system(),
|
|
# such as 'CYGWIN_NT-6.1'
|
|
# FIXME(pyperclip#55): pyperclip currently does not support Cygwin,
|
|
# see https://github.com/asweigart/pyperclip/issues/55
|
|
if os.path.exists("/dev/clipboard"):
|
|
warnings.warn(
|
|
"Pyperclip's support for Cygwin is not perfect, "
|
|
"see https://github.com/asweigart/pyperclip/issues/55",
|
|
stacklevel=find_stack_level(),
|
|
)
|
|
return init_dev_clipboard_clipboard()
|
|
|
|
# Setup for the WINDOWS platform:
|
|
elif os.name == "nt" or platform.system() == "Windows":
|
|
return init_windows_clipboard()
|
|
|
|
if platform.system() == "Linux":
|
|
if which("wslconfig.exe"):
|
|
return init_wsl_clipboard()
|
|
|
|
# Setup for the macOS platform:
|
|
if os.name == "mac" or platform.system() == "Darwin":
|
|
try:
|
|
import AppKit
|
|
import Foundation # check if pyobjc is installed
|
|
except ImportError:
|
|
return init_osx_pbcopy_clipboard()
|
|
else:
|
|
return init_osx_pyobjc_clipboard()
|
|
|
|
# Setup for the LINUX platform:
|
|
if HAS_DISPLAY:
|
|
if _executable_exists("xsel"):
|
|
return init_xsel_clipboard()
|
|
if _executable_exists("xclip"):
|
|
return init_xclip_clipboard()
|
|
if _executable_exists("klipper") and _executable_exists("qdbus"):
|
|
return init_klipper_clipboard()
|
|
|
|
try:
|
|
# qtpy is a small abstraction layer that lets you write applications
|
|
# using a single api call to either PyQt or PySide.
|
|
# https://pypi.python.org/project/QtPy
|
|
import qtpy # check if qtpy is installed
|
|
except ImportError:
|
|
# If qtpy isn't installed, fall back on importing PyQt4.
|
|
try:
|
|
import PyQt5 # check if PyQt5 is installed
|
|
except ImportError:
|
|
try:
|
|
import PyQt4 # check if PyQt4 is installed
|
|
except ImportError:
|
|
pass # We want to fail fast for all non-ImportError exceptions.
|
|
else:
|
|
return init_qt_clipboard()
|
|
else:
|
|
return init_qt_clipboard()
|
|
else:
|
|
return init_qt_clipboard()
|
|
|
|
return init_no_clipboard()
|
|
|
|
|
|
def set_clipboard(clipboard):
|
|
"""
|
|
Explicitly sets the clipboard mechanism. The "clipboard mechanism" is how
|
|
the copy() and paste() functions interact with the operating system to
|
|
implement the copy/paste feature. The clipboard parameter must be one of:
|
|
- pbcopy
|
|
- pyobjc (default on macOS)
|
|
- qt
|
|
- xclip
|
|
- xsel
|
|
- klipper
|
|
- windows (default on Windows)
|
|
- no (this is what is set when no clipboard mechanism can be found)
|
|
"""
|
|
global copy, paste
|
|
|
|
clipboard_types = {
|
|
"pbcopy": init_osx_pbcopy_clipboard,
|
|
"pyobjc": init_osx_pyobjc_clipboard,
|
|
"qt": init_qt_clipboard, # TODO - split this into 'qtpy', 'pyqt4', and 'pyqt5'
|
|
"xclip": init_xclip_clipboard,
|
|
"xsel": init_xsel_clipboard,
|
|
"klipper": init_klipper_clipboard,
|
|
"windows": init_windows_clipboard,
|
|
"no": init_no_clipboard,
|
|
}
|
|
|
|
if clipboard not in clipboard_types:
|
|
allowed_clipboard_types = [repr(_) for _ in clipboard_types]
|
|
raise ValueError(
|
|
f"Argument must be one of {', '.join(allowed_clipboard_types)}"
|
|
)
|
|
|
|
# Sets pyperclip's copy() and paste() functions:
|
|
copy, paste = clipboard_types[clipboard]()
|
|
|
|
|
|
def lazy_load_stub_copy(text):
|
|
"""
|
|
A stub function for copy(), which will load the real copy() function when
|
|
called so that the real copy() function is used for later calls.
|
|
|
|
This allows users to import pyperclip without having determine_clipboard()
|
|
automatically run, which will automatically select a clipboard mechanism.
|
|
This could be a problem if it selects, say, the memory-heavy PyQt4 module
|
|
but the user was just going to immediately call set_clipboard() to use a
|
|
different clipboard mechanism.
|
|
|
|
The lazy loading this stub function implements gives the user a chance to
|
|
call set_clipboard() to pick another clipboard mechanism. Or, if the user
|
|
simply calls copy() or paste() without calling set_clipboard() first,
|
|
will fall back on whatever clipboard mechanism that determine_clipboard()
|
|
automatically chooses.
|
|
"""
|
|
global copy, paste
|
|
copy, paste = determine_clipboard()
|
|
return copy(text)
|
|
|
|
|
|
def lazy_load_stub_paste():
|
|
"""
|
|
A stub function for paste(), which will load the real paste() function when
|
|
called so that the real paste() function is used for later calls.
|
|
|
|
This allows users to import pyperclip without having determine_clipboard()
|
|
automatically run, which will automatically select a clipboard mechanism.
|
|
This could be a problem if it selects, say, the memory-heavy PyQt4 module
|
|
but the user was just going to immediately call set_clipboard() to use a
|
|
different clipboard mechanism.
|
|
|
|
The lazy loading this stub function implements gives the user a chance to
|
|
call set_clipboard() to pick another clipboard mechanism. Or, if the user
|
|
simply calls copy() or paste() without calling set_clipboard() first,
|
|
will fall back on whatever clipboard mechanism that determine_clipboard()
|
|
automatically chooses.
|
|
"""
|
|
global copy, paste
|
|
copy, paste = determine_clipboard()
|
|
return paste()
|
|
|
|
|
|
def is_available() -> bool:
|
|
return copy != lazy_load_stub_copy and paste != lazy_load_stub_paste
|
|
|
|
|
|
# Initially, copy() and paste() are set to lazy loading wrappers which will
|
|
# set `copy` and `paste` to real functions the first time they're used, unless
|
|
# set_clipboard() or determine_clipboard() is called first.
|
|
copy, paste = lazy_load_stub_copy, lazy_load_stub_paste
|
|
|
|
|
|
__all__ = ["copy", "paste", "set_clipboard", "determine_clipboard"]
|
|
|
|
# pandas aliases
|
|
clipboard_get = paste
|
|
clipboard_set = copy
|