17830: preserve line endings of original file when updating keywords.
This fixes the test failures on Windows from the new tests, and includes test fixes as well as the module fix.
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5238092592
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f0f7ceae3c
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@ -60,6 +60,12 @@ def main():
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if len(args) > 1: optfile = args[1]
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else: optfile = "Lib/keyword.py"
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# load the output skeleton from the target, taking care to preserve its
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# newline convention.
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with open(optfile, newline='') as fp:
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format = fp.readlines()
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nl = format[0][len(format[0].strip()):] if format else '\n'
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# scan the source file for keywords
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with open(iptfile) as fp:
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strprog = re.compile('"([^"]+)"')
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@ -68,25 +74,21 @@ def main():
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if '{1, "' in line:
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match = strprog.search(line)
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if match:
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lines.append(" '" + match.group(1) + "',\n")
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lines.append(" '" + match.group(1) + "'," + nl)
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lines.sort()
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# load the output skeleton from the target
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with open(optfile) as fp:
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format = fp.readlines()
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# insert the lines of keywords
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# insert the lines of keywords into the skeleton
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try:
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start = format.index("#--start keywords--\n") + 1
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end = format.index("#--end keywords--\n")
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start = format.index("#--start keywords--" + nl) + 1
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end = format.index("#--end keywords--" + nl)
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format[start:end] = lines
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except ValueError:
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sys.stderr.write("target does not contain format markers\n")
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sys.exit(1)
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# write the output file
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with open(optfile, 'w') as fp:
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fp.write(''.join(format))
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with open(optfile, 'w', newline='') as fp:
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fp.writelines(format)
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if __name__ == "__main__":
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main()
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@ -9,7 +9,8 @@ import shutil
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import textwrap
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KEYWORD_FILE = support.findfile('keyword.py')
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GRAMMAR_FILE = os.path.join('..', '..', 'Python', 'graminit.c')
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GRAMMAR_FILE = os.path.join(os.path.split(__file__)[0],
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'..', '..', 'Python', 'graminit.c')
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TEST_PY_FILE = 'keyword_test.py'
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GRAMMAR_TEST_FILE = 'graminit_test.c'
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PY_FILE_WITHOUT_KEYWORDS = 'minimal_keyword.py'
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@ -30,7 +31,7 @@ class Test_iskeyword(unittest.TestCase):
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# preserved for backward compatibility.
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def test_changing_the_kwlist_does_not_affect_iskeyword(self):
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oldlist = keyword.kwlist
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self.addCleanup(lambda: setattr(keyword, 'kwlist', oldlist))
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self.addCleanup(setattr, keyword, 'kwlist', oldlist)
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keyword.kwlist = ['its', 'all', 'eggs', 'beans', 'and', 'a', 'slice']
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self.assertFalse(keyword.iskeyword('eggs'))
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@ -38,11 +39,12 @@ class Test_iskeyword(unittest.TestCase):
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class TestKeywordGeneration(unittest.TestCase):
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def _copy_file_without_generated_keywords(self, source_file, dest_file):
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with open(source_file) as fp:
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with open(source_file, 'rb') as fp:
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lines = fp.readlines()
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with open(dest_file, 'w') as fp:
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fp.writelines(lines[:lines.index("#--start keywords--\n") + 1])
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fp.writelines(lines[lines.index("#--end keywords--\n"):])
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nl = lines[0][len(lines[0].strip()):]
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with open(dest_file, 'wb') as fp:
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fp.writelines(lines[:lines.index(b"#--start keywords--" + nl) + 1])
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fp.writelines(lines[lines.index(b"#--end keywords--" + nl):])
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def _generate_keywords(self, grammar_file, target_keyword_py_file):
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proc = subprocess.Popen([sys.executable,
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@ -56,15 +58,15 @@ class TestKeywordGeneration(unittest.TestCase):
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'test only works from source build directory')
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def test_real_grammar_and_keyword_file(self):
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self._copy_file_without_generated_keywords(KEYWORD_FILE, TEST_PY_FILE)
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self.addCleanup(lambda: support.unlink(TEST_PY_FILE))
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self.addCleanup(support.unlink, TEST_PY_FILE)
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self.assertFalse(filecmp.cmp(KEYWORD_FILE, TEST_PY_FILE))
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self.assertEqual(0, self._generate_keywords(GRAMMAR_FILE,
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TEST_PY_FILE)[0])
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self.assertEqual((0, b''), self._generate_keywords(GRAMMAR_FILE,
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TEST_PY_FILE))
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self.assertTrue(filecmp.cmp(KEYWORD_FILE, TEST_PY_FILE))
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def test_grammar(self):
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self._copy_file_without_generated_keywords(KEYWORD_FILE, TEST_PY_FILE)
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self.addCleanup(lambda: support.unlink(TEST_PY_FILE))
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self.addCleanup(support.unlink, TEST_PY_FILE)
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with open(GRAMMAR_TEST_FILE, 'w') as fp:
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# Some of these are probably implementation accidents.
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fp.writelines(textwrap.dedent("""\
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@ -86,40 +88,40 @@ class TestKeywordGeneration(unittest.TestCase):
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{1, 'no good'}
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{283, 0},
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{1, "too many spaces"}"""))
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self.addCleanup(lambda: support.unlink(GRAMMAR_TEST_FILE))
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self.addCleanup(support.unlink, GRAMMAR_TEST_FILE)
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self._generate_keywords(GRAMMAR_TEST_FILE, TEST_PY_FILE)
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expected = [
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" 'This one is tab indented',\n",
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" 'also legal',\n",
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" 'continue',\n",
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" 'crazy but legal',\n",
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" 'jello',\n",
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" 'lemon',\n",
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" 'tomato',\n",
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" 'turnip',\n",
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" 'wigii',\n",
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" 'This one is tab indented',",
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" 'also legal',",
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" 'continue',",
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" 'crazy but legal',",
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" 'jello',",
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" 'lemon',",
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" 'tomato',",
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" 'turnip',",
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" 'wigii',",
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]
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with open(TEST_PY_FILE) as fp:
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lines = fp.readlines()
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start = lines.index("#--start keywords--\n") + 1
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end = lines.index("#--end keywords--\n")
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lines = fp.read().splitlines()
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start = lines.index("#--start keywords--") + 1
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end = lines.index("#--end keywords--")
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actual = lines[start:end]
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self.assertEqual(actual, expected)
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def test_empty_grammar_results_in_no_keywords(self):
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self._copy_file_without_generated_keywords(KEYWORD_FILE,
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PY_FILE_WITHOUT_KEYWORDS)
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self.addCleanup(lambda: support.unlink(PY_FILE_WITHOUT_KEYWORDS))
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self.addCleanup(support.unlink, PY_FILE_WITHOUT_KEYWORDS)
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shutil.copyfile(KEYWORD_FILE, TEST_PY_FILE)
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self.addCleanup(lambda: support.unlink(TEST_PY_FILE))
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self.assertEqual(0, self._generate_keywords(os.devnull,
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TEST_PY_FILE)[0])
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self.addCleanup(support.unlink, TEST_PY_FILE)
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self.assertEqual((0, b''), self._generate_keywords(os.devnull,
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TEST_PY_FILE))
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self.assertTrue(filecmp.cmp(TEST_PY_FILE, PY_FILE_WITHOUT_KEYWORDS))
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def test_keywords_py_without_markers_produces_error(self):
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rc, stderr = self._generate_keywords(os.devnull, os.devnull)
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self.assertNotEqual(rc, 0)
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self.assertEqual(stderr, b'target does not contain format markers\n')
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self.assertRegex(stderr, b'does not contain format markers')
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def test_missing_grammar_file_produces_error(self):
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rc, stderr = self._generate_keywords(NONEXISTENT_FILE, KEYWORD_FILE)
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@ -49,6 +49,9 @@ Core and Builtins
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Library
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-------
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- Issue #17830: When keyword.py is used to update a keyword file, it now
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preserves the line endings of the original file.
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- Issue #17272: Making the urllib.request's Request.full_url a descriptor.
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Fixes bugs with assignment to full_url. Patch by Demian Brecht.
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