/usr/lib/python3/dist-packages/IPython/terminal/pt_inputhooks/osx.py is in python3-ipython 5.5.0-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 | """Inputhook for OS X
Calls NSApp / CoreFoundation APIs via ctypes.
"""
# obj-c boilerplate from appnope, used under BSD 2-clause
import ctypes
import ctypes.util
from threading import Event
objc = ctypes.cdll.LoadLibrary(ctypes.util.find_library('objc'))
void_p = ctypes.c_void_p
objc.objc_getClass.restype = void_p
objc.sel_registerName.restype = void_p
objc.objc_msgSend.restype = void_p
objc.objc_msgSend.argtypes = [void_p, void_p]
msg = objc.objc_msgSend
def _utf8(s):
"""ensure utf8 bytes"""
if not isinstance(s, bytes):
s = s.encode('utf8')
return s
def n(name):
"""create a selector name (for ObjC methods)"""
return objc.sel_registerName(_utf8(name))
def C(classname):
"""get an ObjC Class by name"""
return objc.objc_getClass(_utf8(classname))
# end obj-c boilerplate from appnope
# CoreFoundation C-API calls we will use:
CoreFoundation = ctypes.cdll.LoadLibrary(ctypes.util.find_library('CoreFoundation'))
CFFileDescriptorCreate = CoreFoundation.CFFileDescriptorCreate
CFFileDescriptorCreate.restype = void_p
CFFileDescriptorCreate.argtypes = [void_p, ctypes.c_int, ctypes.c_bool, void_p]
CFFileDescriptorGetNativeDescriptor = CoreFoundation.CFFileDescriptorGetNativeDescriptor
CFFileDescriptorGetNativeDescriptor.restype = ctypes.c_int
CFFileDescriptorGetNativeDescriptor.argtypes = [void_p]
CFFileDescriptorEnableCallBacks = CoreFoundation.CFFileDescriptorEnableCallBacks
CFFileDescriptorEnableCallBacks.restype = None
CFFileDescriptorEnableCallBacks.argtypes = [void_p, ctypes.c_ulong]
CFFileDescriptorCreateRunLoopSource = CoreFoundation.CFFileDescriptorCreateRunLoopSource
CFFileDescriptorCreateRunLoopSource.restype = void_p
CFFileDescriptorCreateRunLoopSource.argtypes = [void_p, void_p, void_p]
CFRunLoopGetCurrent = CoreFoundation.CFRunLoopGetCurrent
CFRunLoopGetCurrent.restype = void_p
CFRunLoopAddSource = CoreFoundation.CFRunLoopAddSource
CFRunLoopAddSource.restype = None
CFRunLoopAddSource.argtypes = [void_p, void_p, void_p]
CFRelease = CoreFoundation.CFRelease
CFRelease.restype = None
CFRelease.argtypes = [void_p]
CFFileDescriptorInvalidate = CoreFoundation.CFFileDescriptorInvalidate
CFFileDescriptorInvalidate.restype = None
CFFileDescriptorInvalidate.argtypes = [void_p]
# From CFFileDescriptor.h
kCFFileDescriptorReadCallBack = 1
kCFRunLoopCommonModes = void_p.in_dll(CoreFoundation, 'kCFRunLoopCommonModes')
def _NSApp():
"""Return the global NSApplication instance (NSApp)"""
return msg(C('NSApplication'), n('sharedApplication'))
def _wake(NSApp):
"""Wake the Application"""
event = msg(C('NSEvent'),
n('otherEventWithType:location:modifierFlags:'
'timestamp:windowNumber:context:subtype:data1:data2:'),
15, # Type
0, # location
0, # flags
0, # timestamp
0, # window
None, # context
0, # subtype
0, # data1
0, # data2
)
msg(NSApp, n('postEvent:atStart:'), void_p(event), True)
_triggered = Event()
def _input_callback(fdref, flags, info):
"""Callback to fire when there's input to be read"""
_triggered.set()
CFFileDescriptorInvalidate(fdref)
CFRelease(fdref)
NSApp = _NSApp()
msg(NSApp, n('stop:'), NSApp)
_wake(NSApp)
_c_callback_func_type = ctypes.CFUNCTYPE(None, void_p, void_p, void_p)
_c_input_callback = _c_callback_func_type(_input_callback)
def _stop_on_read(fd):
"""Register callback to stop eventloop when there's data on fd"""
_triggered.clear()
fdref = CFFileDescriptorCreate(None, fd, False, _c_input_callback, None)
CFFileDescriptorEnableCallBacks(fdref, kCFFileDescriptorReadCallBack)
source = CFFileDescriptorCreateRunLoopSource(None, fdref, 0)
loop = CFRunLoopGetCurrent()
CFRunLoopAddSource(loop, source, kCFRunLoopCommonModes)
CFRelease(source)
def inputhook(context):
"""Inputhook for Cocoa (NSApp)"""
NSApp = _NSApp()
_stop_on_read(context.fileno())
msg(NSApp, n('run'))
if not _triggered.is_set():
# app closed without firing callback,
# probably due to last window being closed.
# Run the loop manually in this case,
# since there may be events still to process (#9734)
CoreFoundation.CFRunLoopRun()
|