def test_symlink(self):
# This test will fail if the checkout is in a symlink.
actual = file_path.split_at_symlink(None, ROOT_DIR)
expected = (ROOT_DIR, None, None)
self.assertEqual(expected, actual)
actual = file_path.split_at_symlink(
None, os.path.join(BASE_DIR, 'trace_inputs'))
expected = (
os.path.join(BASE_DIR, 'trace_inputs'), None, None)
self.assertEqual(expected, actual)
actual = file_path.split_at_symlink(
None, os.path.join(BASE_DIR, 'trace_inputs', 'files2'))
expected = (
os.path.join(BASE_DIR, 'trace_inputs'), 'files2', '')
self.assertEqual(expected, actual)
actual = file_path.split_at_symlink(
ROOT_DIR, os.path.join('tests', 'trace_inputs', 'files2'))
expected = (
os.path.join('tests', 'trace_inputs'), 'files2', '')
self.assertEqual(expected, actual)
actual = file_path.split_at_symlink(
ROOT_DIR, os.path.join('tests', 'trace_inputs', 'files2', 'bar'))
expected = (
os.path.join('tests', 'trace_inputs'), 'files2', '/bar')
self.assertEqual(expected, actual)
def test_symlink(self):
# This test will fail if the checkout is in a symlink.
actual = file_path.split_at_symlink(None, ROOT_DIR)
expected = (ROOT_DIR, None, None)
self.assertEqual(expected, actual)
actual = file_path.split_at_symlink(
None, os.path.join(BASE_DIR, 'trace_inputs'))
expected = (
os.path.join(BASE_DIR, 'trace_inputs'), None, None)
self.assertEqual(expected, actual)
actual = file_path.split_at_symlink(
None, os.path.join(BASE_DIR, 'trace_inputs', 'files2'))
expected = (
os.path.join(BASE_DIR, 'trace_inputs'), 'files2', '')
self.assertEqual(expected, actual)
actual = file_path.split_at_symlink(
ROOT_DIR, os.path.join('tests', 'trace_inputs', 'files2'))
expected = (
os.path.join('tests', 'trace_inputs'), 'files2', '')
self.assertEqual(expected, actual)
actual = file_path.split_at_symlink(
ROOT_DIR, os.path.join('tests', 'trace_inputs', 'files2', 'bar'))
expected = (
os.path.join('tests', 'trace_inputs'), 'files2', '/bar')
self.assertEqual(expected, actual)
def test_symlink(self):
# This test will fail if the checkout is in a symlink.
actual = file_path.split_at_symlink(None, ROOT_DIR)
expected = (ROOT_DIR, None, None)
self.assertEqual(expected, actual)
actual = file_path.split_at_symlink(None, os.path.join(BASE_DIR, "trace_inputs"))
expected = (os.path.join(BASE_DIR, "trace_inputs"), None, None)
self.assertEqual(expected, actual)
actual = file_path.split_at_symlink(None, os.path.join(BASE_DIR, "trace_inputs", "files2"))
expected = (os.path.join(BASE_DIR, "trace_inputs"), "files2", "")
self.assertEqual(expected, actual)
actual = file_path.split_at_symlink(ROOT_DIR, os.path.join("tests", "trace_inputs", "files2"))
expected = (os.path.join("tests", "trace_inputs"), "files2", "")
self.assertEqual(expected, actual)
actual = file_path.split_at_symlink(ROOT_DIR, os.path.join("tests", "trace_inputs", "files2", "bar"))
expected = (os.path.join("tests", "trace_inputs"), "files2", "/bar")
self.assertEqual(expected, actual)
def expand_symlinks(indir, relfile):
"""Follows symlinks in |relfile|, but treating symlinks that point outside the
build tree as if they were ordinary directories/files. Returns the final
symlink-free target and a list of paths to symlinks encountered in the
process.
The rule about symlinks outside the build tree is for the benefit of the
Chromium OS ebuild, which symlinks the output directory to an unrelated path
in the chroot.
Fails when a directory loop is detected, although in theory we could support
that case.
"""
is_directory = relfile.endswith(os.path.sep)
done = indir
todo = relfile.strip(os.path.sep)
symlinks = []
while todo:
pre_symlink, symlink, post_symlink = file_path.split_at_symlink(done, todo)
if not symlink:
todo = file_path.fix_native_path_case(done, todo)
done = os.path.join(done, todo)
break
symlink_path = os.path.join(done, pre_symlink, symlink)
post_symlink = post_symlink.lstrip(os.path.sep)
# readlink doesn't exist on Windows.
# pylint: disable=E1101
target = os.path.normpath(os.path.join(done, pre_symlink))
symlink_target = os.readlink(symlink_path)
if os.path.isabs(symlink_target):
# Absolute path are considered a normal directories. The use case is
# generally someone who puts the output directory on a separate drive.
target = symlink_target
else:
# The symlink itself could be using the wrong path case.
target = file_path.fix_native_path_case(target, symlink_target)
if not os.path.exists(target):
raise MappingError(
'Symlink target doesn\'t exist: %s -> %s' % (symlink_path, target))
target = file_path.get_native_path_case(target)
if not file_path.path_starts_with(indir, target):
done = symlink_path
todo = post_symlink
continue
if file_path.path_starts_with(target, symlink_path):
raise MappingError(
'Can\'t map recursive symlink reference %s -> %s' %
(symlink_path, target))
logging.info('Found symlink: %s -> %s', symlink_path, target)
symlinks.append(os.path.relpath(symlink_path, indir))
# Treat the common prefix of the old and new paths as done, and start
# scanning again.
target = target.split(os.path.sep)
symlink_path = symlink_path.split(os.path.sep)
prefix_length = 0
for target_piece, symlink_path_piece in zip(target, symlink_path):
if target_piece == symlink_path_piece:
prefix_length += 1
else:
break
done = os.path.sep.join(target[:prefix_length])
todo = os.path.join(
os.path.sep.join(target[prefix_length:]), post_symlink)
relfile = os.path.relpath(done, indir)
relfile = relfile.rstrip(os.path.sep) + is_directory * os.path.sep
return relfile, symlinks
def expand_symlinks(indir, relfile):
"""Follows symlinks in |relfile|, but treating symlinks that point outside the
build tree as if they were ordinary directories/files. Returns the final
symlink-free target and a list of paths to symlinks encountered in the
process.
The rule about symlinks outside the build tree is for the benefit of the
Chromium OS ebuild, which symlinks the output directory to an unrelated path
in the chroot.
Fails when a directory loop is detected, although in theory we could support
that case.
"""
is_directory = relfile.endswith(os.path.sep)
done = indir
todo = relfile.strip(os.path.sep)
symlinks = []
while todo:
pre_symlink, symlink, post_symlink = file_path.split_at_symlink(done, todo)
if not symlink:
todo = file_path.fix_native_path_case(done, todo)
done = os.path.join(done, todo)
break
symlink_path = os.path.join(done, pre_symlink, symlink)
post_symlink = post_symlink.lstrip(os.path.sep)
# readlink doesn't exist on Windows.
# pylint: disable=E1101
target = os.path.normpath(os.path.join(done, pre_symlink))
symlink_target = os.readlink(symlink_path)
if os.path.isabs(symlink_target):
# Absolute path are considered a normal directories. The use case is
# generally someone who puts the output directory on a separate drive.
target = symlink_target
else:
# The symlink itself could be using the wrong path case.
target = file_path.fix_native_path_case(target, symlink_target)
if not os.path.exists(target):
raise MappingError(
'Symlink target doesn\'t exist: %s -> %s' % (symlink_path, target))
target = file_path.get_native_path_case(target)
if not file_path.path_starts_with(indir, target):
done = symlink_path
todo = post_symlink
continue
if file_path.path_starts_with(target, symlink_path):
raise MappingError(
'Can\'t map recursive symlink reference %s -> %s' %
(symlink_path, target))
logging.info('Found symlink: %s -> %s', symlink_path, target)
symlinks.append(os.path.relpath(symlink_path, indir))
# Treat the common prefix of the old and new paths as done, and start
# scanning again.
target = target.split(os.path.sep)
symlink_path = symlink_path.split(os.path.sep)
prefix_length = 0
for target_piece, symlink_path_piece in zip(target, symlink_path):
if target_piece == symlink_path_piece:
prefix_length += 1
else:
break
done = os.path.sep.join(target[:prefix_length])
todo = os.path.join(
os.path.sep.join(target[prefix_length:]), post_symlink)
relfile = os.path.relpath(done, indir)
relfile = relfile.rstrip(os.path.sep) + is_directory * os.path.sep
return relfile, symlinks
