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# l=J*C]q@Ep S [ ߿ , # # DEPRECATED: implementation for ffi.verify() # import sys, os, binascii, shutil, io from . import __version_verifier_modules__ from . import ffiplatform if sys.version_info >= (3, 3): import importlib.machinery def _extension_suffixes(): return importlib.machinery.EXTENSION_SUFFIXES[:] else: import imp def _extension_suffixes(): return [suffix for suffix, _, type in imp.get_suffixes() if type == imp.C_EXTENSION] if sys.version_info >= (3,): NativeIO = io.StringIO else: class NativeIO(io.BytesIO): def write(self, s): if isinstance(s, unicode): s = s.encode('ascii') super(NativeIO, self).write(s) def _hack_at_distutils(): # Windows-only workaround for some configurations: see # https://bugs.python.org/issue23246 (Python 2.7 with # a specific MS compiler suite download) if sys.platform == "win32": try: import setuptools # for side-effects, patches distutils except ImportError: pass class Verifier(object): def __init__(self, ffi, preamble, tmpdir=None, modulename=None, ext_package=None, tag='', force_generic_engine=False, source_extension='.c', flags=None, relative_to=None, **kwds): if ffi._parser._uses_new_feature: raise ffiplatform.VerificationError( "feature not supported with ffi.verify(), but only " "with ffi.set_source(): %s" % (ffi._parser._uses_new_feature,)) self.ffi = ffi self.preamble = preamble if not modulename: flattened_kwds = ffiplatform.flatten(kwds) vengine_class = _locate_engine_class(ffi, force_generic_engine) self._vengine = vengine_class(self) self._vengine.patch_extension_kwds(kwds) self.flags = flags self.kwds = self.make_relative_to(kwds, relative_to) # if modulename: if tag: raise TypeError("can't specify both 'modulename' and 'tag'") else: key = '\x00'.join([sys.version[:3], __version_verifier_modules__, preamble, flattened_kwds] + ffi._cdefsources) if sys.version_info >= (3,): key = key.encode('utf-8') k1 = hex(binascii.crc32(key[0::2]) & 0xffffffff) k1 = k1.lstrip('0x').rstrip('L') k2 = hex(binascii.crc32(key[1::2]) & 0xffffffff) k2 = k2.lstrip('0').rstrip('L') modulename = '_cffi_%s_%s%s%s' % (tag, self._vengine._class_key, k1, k2) suffix = _get_so_suffixes()[0] self.tmpdir = tmpdir or _caller_dir_pycache() self.sourcefilename = os.path.join(self.tmpdir, modulename + source_extension) self.modulefilename = os.path.join(self.tmpdir, modulename + suffix) self.ext_package = ext_package self._has_source = False self._has_module = False def write_source(self, file=None): """Write the C source code. It is produced in 'self.sourcefilename', which can be tweaked beforehand.""" with self.ffi._lock: if self._has_source and file is None: raise ffiplat