/usr/lib/pypy/lib_pypy/_tkinter/tclobj.py is in pypy-tk 5.6.0+dfsg-4.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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from .tklib_cffi import ffi as tkffi, lib as tklib
import binascii
class TypeCache(object):
def __init__(self):
self.OldBooleanType = tklib.Tcl_GetObjType("boolean")
self.BooleanType = None
self.ByteArrayType = tklib.Tcl_GetObjType("bytearray")
self.DoubleType = tklib.Tcl_GetObjType("double")
self.IntType = tklib.Tcl_GetObjType("int")
self.WideIntType = tklib.Tcl_GetObjType("wideInt")
self.BigNumType = None
self.ListType = tklib.Tcl_GetObjType("list")
self.ProcBodyType = tklib.Tcl_GetObjType("procbody")
self.StringType = tklib.Tcl_GetObjType("string")
def add_extra_types(self, app):
# Some types are not registered in Tcl.
result = app.call('expr', 'true')
typePtr = AsObj(result).typePtr
if tkffi.string(typePtr.name) == "booleanString":
self.BooleanType = typePtr
result = app.call('expr', '2**63')
typePtr = AsObj(result).typePtr
if tkffi.string(typePtr.name) == "bignum":
self.BigNumType = typePtr
def FromTclString(s):
# If the result contains any bytes with the top bit set, it's
# UTF-8 and we should decode it to Unicode.
try:
s.decode('ascii')
except UnicodeDecodeError:
try:
return s.decode('utf8')
except UnicodeDecodeError:
# Tcl encodes null character as \xc0\x80
try:
return s.replace('\xc0\x80', '\x00').decode('utf-8')
except UnicodeDecodeError:
pass
return s
# Only when tklib.HAVE_WIDE_INT_TYPE.
def FromWideIntObj(app, value):
wide = tkffi.new("Tcl_WideInt*")
if tklib.Tcl_GetWideIntFromObj(app.interp, value, wide) != tklib.TCL_OK:
app.raiseTclError()
return wide[0]
# Only when tklib.HAVE_LIBTOMMATH!
def FromBignumObj(app, value):
bigValue = tkffi.new("mp_int*")
if tklib.Tcl_GetBignumFromObj(app.interp, value, bigValue) != tklib.TCL_OK:
app.raiseTclError()
try:
numBytes = tklib.mp_unsigned_bin_size(bigValue)
buf = tkffi.new("unsigned char[]", numBytes)
bufSize_ptr = tkffi.new("unsigned long*", numBytes)
if tklib.mp_to_unsigned_bin_n(
bigValue, buf, bufSize_ptr) != tklib.MP_OKAY:
raise MemoryError
if bufSize_ptr[0] == 0:
return 0
bytes = tkffi.buffer(buf)[0:bufSize_ptr[0]]
sign = -1 if bigValue.sign == tklib.MP_NEG else 1
return int(sign * int(binascii.hexlify(bytes), 16))
finally:
tklib.mp_clear(bigValue)
def AsBignumObj(value):
sign = -1 if value < 0 else 1
hexstr = '%x' % abs(value)
bigValue = tkffi.new("mp_int*")
tklib.mp_init(bigValue)
try:
if tklib.mp_read_radix(bigValue, hexstr, 16) != tklib.MP_OKAY:
raise MemoryError
bigValue.sign = tklib.MP_NEG if value < 0 else tklib.MP_ZPOS
return tklib.Tcl_NewBignumObj(bigValue)
finally:
tklib.mp_clear(bigValue)
def FromObj(app, value):
"""Convert a TclObj pointer into a Python object."""
typeCache = app._typeCache
if not value.typePtr:
buf = tkffi.buffer(value.bytes, value.length)
return FromTclString(buf[:])
if value.typePtr in (typeCache.BooleanType, typeCache.OldBooleanType):
value_ptr = tkffi.new("int*")
if tklib.Tcl_GetBooleanFromObj(
app.interp, value, value_ptr) == tklib.TCL_ERROR:
app.raiseTclError()
return bool(value_ptr[0])
if value.typePtr == typeCache.ByteArrayType:
size = tkffi.new('int*')
data = tklib.Tcl_GetByteArrayFromObj(value, size)
return tkffi.buffer(data, size[0])[:]
if value.typePtr == typeCache.DoubleType:
return value.internalRep.doubleValue
if value.typePtr == typeCache.IntType:
return value.internalRep.longValue
if value.typePtr == typeCache.WideIntType:
return FromWideIntObj(app, value)
if value.typePtr == typeCache.BigNumType and tklib.HAVE_LIBTOMMATH:
return FromBignumObj(app, value)
if value.typePtr == typeCache.ListType:
size = tkffi.new('int*')
status = tklib.Tcl_ListObjLength(app.interp, value, size)
if status == tklib.TCL_ERROR:
app.raiseTclError()
result = []
tcl_elem = tkffi.new("Tcl_Obj**")
for i in range(size[0]):
status = tklib.Tcl_ListObjIndex(app.interp,
value, i, tcl_elem)
if status == tklib.TCL_ERROR:
app.raiseTclError()
result.append(FromObj(app, tcl_elem[0]))
return tuple(result)
if value.typePtr == typeCache.ProcBodyType:
pass # fall through and return tcl object.
if value.typePtr == typeCache.StringType:
buf = tklib.Tcl_GetUnicode(value)
length = tklib.Tcl_GetCharLength(value)
buf = tkffi.buffer(tkffi.cast("char*", buf), length*2)[:]
return buf.decode('utf-16')
return TclObject(value)
def AsObj(value):
if isinstance(value, str):
return tklib.Tcl_NewStringObj(value, len(value))
if isinstance(value, bool):
return tklib.Tcl_NewBooleanObj(value)
if isinstance(value, int):
return tklib.Tcl_NewLongObj(value)
if isinstance(value, long):
try:
tkffi.new("long[]", [value])
except OverflowError:
pass
else:
return tklib.Tcl_NewLongObj(value)
if tklib.HAVE_WIDE_INT_TYPE:
try:
tkffi.new("Tcl_WideInt[]", [value])
except OverflowError:
pass
else:
return tklib.Tcl_NewWideIntObj(value)
if tklib.HAVE_LIBTOMMATH:
return AsBignumObj(value)
if isinstance(value, float):
return tklib.Tcl_NewDoubleObj(value)
if isinstance(value, tuple):
argv = tkffi.new("Tcl_Obj*[]", len(value))
for i in range(len(value)):
argv[i] = AsObj(value[i])
return tklib.Tcl_NewListObj(len(value), argv)
if isinstance(value, unicode):
encoded = value.encode('utf-16')[2:]
buf = tkffi.new("char[]", encoded)
inbuf = tkffi.cast("Tcl_UniChar*", buf)
return tklib.Tcl_NewUnicodeObj(inbuf, len(encoded)/2)
if isinstance(value, TclObject):
tklib.Tcl_IncrRefCount(value._value)
return value._value
return AsObj(str(value))
class TclObject(object):
def __new__(cls, value):
self = object.__new__(cls)
tklib.Tcl_IncrRefCount(value)
self._value = value
self._string = None
return self
def __del__(self):
tklib.Tcl_DecrRefCount(self._value)
def __str__(self):
if self._string and isinstance(self._string, str):
return self._string
return tkffi.string(tklib.Tcl_GetString(self._value))
def __repr__(self):
return "<%s object at 0x%x>" % (
self.typename, tkffi.cast("intptr_t", self._value))
def __eq__(self, other):
if not isinstance(other, TclObject):
return NotImplemented
return self._value == other._value
@property
def typename(self):
return tkffi.string(self._value.typePtr.name)
@property
def string(self):
if self._string is None:
length = tkffi.new("int*")
s = tklib.Tcl_GetStringFromObj(self._value, length)
value = tkffi.buffer(s, length[0])[:]
try:
value.decode('ascii')
except UnicodeDecodeError:
value = value.decode('utf8')
self._string = value
return self._string
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