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bpo-40260: Update modulefinder to use io.open_code() and respect coding comments (GH-19488)

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Barry 2020-04-14 20:16:06 +01:00 • committed by GitHub
parent aade1cc453
commit d42e582063
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3 changed files with 75 additions and 21 deletions
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30
Lib/modulefinder.py
View file

@ -5,6 +5,7 @@
import importlib.machinery
import marshal
import os
import io
import sys
import types
import warnings
@ -68,35 +69,32 @@ def _find_module(name, path=None):
# Some special cases:
if spec.loader is importlib.machinery.BuiltinImporter:
return None, None, ("", "", _C_BUILTIN)
return None, None, ("", _C_BUILTIN)
if spec.loader is importlib.machinery.FrozenImporter:
return None, None, ("", "", _PY_FROZEN)
return None, None, ("", _PY_FROZEN)
file_path = spec.origin
if spec.loader.is_package(name):
return None, os.path.dirname(file_path), ("", "", _PKG_DIRECTORY)
return None, os.path.dirname(file_path), ("", _PKG_DIRECTORY)
if isinstance(spec.loader, importlib.machinery.SourceFileLoader):
kind = _PY_SOURCE
mode = "r"
elif isinstance(spec.loader, importlib.machinery.ExtensionFileLoader):
kind = _C_EXTENSION
mode = "rb"
elif isinstance(spec.loader, importlib.machinery.SourcelessFileLoader):
kind = _PY_COMPILED
mode = "rb"
else: # Should never happen.
return None, None, ("", "", _SEARCH_ERROR)
return None, None, ("", _SEARCH_ERROR)
file = open(file_path, mode)
file = io.open_code(file_path)
suffix = os.path.splitext(file_path)[-1]
return file, file_path, (suffix, mode, kind)
return file, file_path, (suffix, kind)
class Module:
@ -160,15 +158,15 @@ def msgout(self, *args):
def run_script(self, pathname):
self.msg(2, "run_script", pathname)
with open(pathname) as fp:
stuff = ("", "r", _PY_SOURCE)
with io.open_code(pathname) as fp:
stuff = ("", _PY_SOURCE)
self.load_module('__main__', fp, pathname, stuff)
def load_file(self, pathname):
dir, name = os.path.split(pathname)
name, ext = os.path.splitext(name)
with open(pathname) as fp:
stuff = (ext, "r", _PY_SOURCE)
with io.open_code(pathname) as fp:
stuff = (ext, _PY_SOURCE)
self.load_module(name, fp, pathname, stuff)
def import_hook(self, name, caller=None, fromlist=None, level=-1):
@ -333,14 +331,14 @@ def import_module(self, partname, fqname, parent):
return m
def load_module(self, fqname, fp, pathname, file_info):
suffix, mode, type = file_info
suffix, type = file_info
self.msgin(2, "load_module", fqname, fp and "fp", pathname)
if type == _PKG_DIRECTORY:
m = self.load_package(fqname, pathname)
self.msgout(2, "load_module ->", m)
return m
if type == _PY_SOURCE:
co = compile(fp.read()+'\n', pathname, 'exec')
co = compile(fp.read()+b'\n', pathname, 'exec')
elif type == _PY_COMPILED:
try:
data = fp.read()
@ -504,7 +502,7 @@ def find_module(self, name, path, parent=None):
if path is None:
if name in sys.builtin_module_names:
return (None, None, ("", "", _C_BUILTIN))
return (None, None, ("", _C_BUILTIN))
path = self.path

65
Lib/test/test_modulefinder.py
View file

@ -40,7 +40,8 @@
from c import something
b/__init__.py
from sys import *
"""]
""",
]
maybe_test_new = [
"a.module",
@ -245,6 +246,48 @@ def foo(): pass
b/c.py
"""]
coding_default_utf8_test = [
"a_utf8",
["a_utf8", "b_utf8"],
[], [],
"""\
a_utf8.py
# use the default of utf8
print('Unicode test A code point 2090 \u2090 that is not valid in cp1252')
import b_utf8
b_utf8.py
# use the default of utf8
print('Unicode test B code point 2090 \u2090 that is not valid in cp1252')
"""]
coding_explicit_utf8_test = [
"a_utf8",
["a_utf8", "b_utf8"],
[], [],
"""\
a_utf8.py
# coding=utf8
print('Unicode test A code point 2090 \u2090 that is not valid in cp1252')
import b_utf8
b_utf8.py
# use the default of utf8
print('Unicode test B code point 2090 \u2090 that is not valid in cp1252')
"""]
coding_explicit_cp1252_test = [
"a_cp1252",
["a_cp1252", "b_utf8"],
[], [],
b"""\
a_cp1252.py
# coding=cp1252
# 0xe2 is not allowed in utf8
print('CP1252 test P\xe2t\xe9')
import b_utf8
b_utf8.py
# use the default of utf8
print('Unicode test A code point 2090 \u2090 that is not valid in cp1252')
"""]
def open_file(path):
dirname = os.path.dirname(path)
@ -253,18 +296,22 @@ def open_file(path):
except OSError as e:
if e.errno != errno.EEXIST:
raise
return open(path, "w")
return open(path, 'wb')
def create_package(source):
ofi = None
try:
for line in source.splitlines():
if line.startswith(" ") or line.startswith("\t"):
ofi.write(line.strip() + "\n")
if type(line) != bytes:
line = line.encode('utf-8')
if line.startswith(b' ') or line.startswith(b'\t'):
ofi.write(line.strip() + b'\n')
else:
if ofi:
ofi.close()
if type(line) == bytes:
line = line.decode('utf-8')
ofi = open_file(os.path.join(TEST_DIR, line.strip()))
finally:
if ofi:
@ -337,7 +384,7 @@ def test_bytecode(self):
source_path = base_path + importlib.machinery.SOURCE_SUFFIXES[0]
bytecode_path = base_path + importlib.machinery.BYTECODE_SUFFIXES[0]
with open_file(source_path) as file:
file.write('testing_modulefinder = True\n')
file.write('testing_modulefinder = True\n'.encode('utf-8'))
py_compile.compile(source_path, cfile=bytecode_path)
os.remove(source_path)
self._do_test(bytecode_test)
@ -365,6 +412,14 @@ def test_extended_opargs(self):
""" % list(range(2**16))] # 2**16 constants
self._do_test(extended_opargs_test)
def test_coding_default_utf8(self):
self._do_test(coding_default_utf8_test)
def test_coding_explicit_utf8(self):
self._do_test(coding_explicit_utf8_test)
def test_coding_explicit_cp1252(self):
self._do_test(coding_explicit_cp1252_test)
if __name__ == "__main__":
unittest.main()

1
Misc/NEWS.d/next/Library/2020-04-12-21-18-56.bpo-40260.F6VWaE.rst Normal file
View file

@ -0,0 +1 @@
Ensure :mod:`modulefinder` uses :func:`io.open_code` and respects coding comments.