1""" Utilities for accessing the platform's clipboard. 2""" 3 4import subprocess 5 6from IPython.core.error import TryNext 7import IPython.utils.py3compat as py3compat 8 9class ClipboardEmpty(ValueError): 10 pass 11 12def win32_clipboard_get(): 13 """ Get the current clipboard's text on Windows. 14 15 Requires Mark Hammond's pywin32 extensions. 16 """ 17 try: 18 import win32clipboard 19 except ImportError: 20 raise TryNext("Getting text from the clipboard requires the pywin32 " 21 "extensions: http://sourceforge.net/projects/pywin32/") 22 win32clipboard.OpenClipboard() 23 try: 24 text = win32clipboard.GetClipboardData(win32clipboard.CF_UNICODETEXT) 25 except (TypeError, win32clipboard.error): 26 try: 27 text = win32clipboard.GetClipboardData(win32clipboard.CF_TEXT) 28 text = py3compat.cast_unicode(text, py3compat.DEFAULT_ENCODING) 29 except (TypeError, win32clipboard.error): 30 raise ClipboardEmpty 31 finally: 32 win32clipboard.CloseClipboard() 33 return text 34 35def osx_clipboard_get() -> str: 36 """ Get the clipboard's text on OS X. 37 """ 38 p = subprocess.Popen(['pbpaste', '-Prefer', 'ascii'], 39 stdout=subprocess.PIPE) 40 bytes_, stderr = p.communicate() 41 # Text comes in with old Mac \r line endings. Change them to \n. 42 bytes_ = bytes_.replace(b'\r', b'\n') 43 text = py3compat.decode(bytes_) 44 return text 45 46def tkinter_clipboard_get(): 47 """ Get the clipboard's text using Tkinter. 48 49 This is the default on systems that are not Windows or OS X. It may 50 interfere with other UI toolkits and should be replaced with an 51 implementation that uses that toolkit. 52 """ 53 try: 54 from tkinter import Tk, TclError 55 except ImportError: 56 raise TryNext("Getting text from the clipboard on this platform requires tkinter.") 57 58 root = Tk() 59 root.withdraw() 60 try: 61 text = root.clipboard_get() 62 except TclError: 63 raise ClipboardEmpty 64 finally: 65 root.destroy() 66 text = py3compat.cast_unicode(text, py3compat.DEFAULT_ENCODING) 67 return text 68 69 70