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""" Utilities for accessing the platform's clipboard.
"""
import subprocess
from IPython.core.error import TryNext
import IPython.utils.py3compat as py3compat
class ClipboardEmpty(ValueError):
pass
def win32_clipboard_get():
""" Get the current clipboard's text on Windows.
Requires Mark Hammond's pywin32 extensions.
"""
try:
import win32clipboard
except ImportError:
raise TryNext("Getting text from the clipboard requires the pywin32 "
"extensions: http://sourceforge.net/projects/pywin32/")
win32clipboard.OpenClipboard()
try:
text = win32clipboard.GetClipboardData(win32clipboard.CF_UNICODETEXT)
except (TypeError, win32clipboard.error):
try:
text = win32clipboard.GetClipboardData(win32clipboard.CF_TEXT)
text = py3compat.cast_unicode(text, py3compat.DEFAULT_ENCODING)
except (TypeError, win32clipboard.error):
raise ClipboardEmpty
finally:
win32clipboard.CloseClipboard()
return text
def osx_clipboard_get():
""" Get the clipboard's text on OS X.
"""
p = subprocess.Popen(['pbpaste', '-Prefer', 'ascii'],
stdout=subprocess.PIPE)
text, stderr = p.communicate()
# Text comes in with old Mac \r line endings. Change them to \n.
text = text.replace(b'\r', b'\n')
text = py3compat.cast_unicode(text, py3compat.DEFAULT_ENCODING)
return text
def tkinter_clipboard_get():
""" Get the clipboard's text using Tkinter.
This is the default on systems that are not Windows or OS X. It may
interfere with other UI toolkits and should be replaced with an
implementation that uses that toolkit.
"""
try:
from tkinter import Tk, TclError # Py 3
except ImportError:
try:
from Tkinter import Tk, TclError # Py 2
except ImportError:
raise TryNext("Getting text from the clipboard on this platform "
"requires Tkinter.")
root = Tk()
root.withdraw()
try:
text = root.clipboard_get()
except TclError:
raise ClipboardEmpty
finally:
root.destroy()
text = py3compat.cast_unicode(text, py3compat.DEFAULT_ENCODING)
return text
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