def find_command(name, prefer_dir=None):
"""Finds a linaro-image-tools command.
Prefers specified directory, otherwise searches only the current directory
when running from a checkout, or only PATH when running from an installed
version.
"""
assert name != ""
assert os.path.dirname(name) == ""
cmd_runner.sanitize_path(os.environ)
# default to searching in current directory when running from a bzr
# checkout
dirs = [os.getcwd(), ]
if os.path.isabs(__file__):
dirs = os.environ["PATH"].split(os.pathsep)
# empty dir in PATH means current directory
dirs = map(lambda x: x == '' and '.' or x, dirs)
if prefer_dir is not None:
dirs.insert(0, prefer_dir)
for dir in dirs:
path = os.path.join(dir, name)
if os.path.exists(path) and os.access(path, os.X_OK):
return path
return None
def find_command(name, prefer_dir=None):
"""Finds a linaro-image-tools command.
Prefers specified directory, otherwise searches only the current directory
when running from a checkout, or only PATH when running from an installed
version.
"""
assert name != ""
assert os.path.dirname(name) == ""
cmd_runner.sanitize_path(os.environ)
# default to searching in current directory when running from a bzr
# checkout
dirs = [
os.getcwd(),
]
if os.path.isabs(__file__):
dirs = os.environ["PATH"].split(os.pathsep)
# empty dir in PATH means current directory
dirs = map(lambda x: x == '' and '.' or x, dirs)
if prefer_dir is not None:
dirs.insert(0, prefer_dir)
for dir in dirs:
path = os.path.join(dir, name)
if os.path.exists(path) and os.access(path, os.X_OK):
return path
return None
def test_idempotent(self):
self.env['PATH'] = cmd_runner.DEFAULT_PATH
cmd_runner.sanitize_path(self.env)
self.assertEqual(cmd_runner.DEFAULT_PATH, self.env['PATH'])
def test_path_missing_dirs(self):
path = '/bin:/sbin:/foo:/usr/local/sbin'
self.env['PATH'] = path
cmd_runner.sanitize_path(self.env)
expected = '%s:/usr/local/bin:/usr/sbin:/usr/bin' % path
self.assertEqual(expected, self.env['PATH'])
def test_path_unset(self):
cmd_runner.sanitize_path(self.env)
self.assertEqual(cmd_runner.DEFAULT_PATH, self.env['PATH'])
def test_idempotent(self):
self.env['PATH'] = cmd_runner.DEFAULT_PATH
cmd_runner.sanitize_path(self.env)
self.assertEqual(cmd_runner.DEFAULT_PATH, self.env['PATH'])
def test_path_missing_dirs(self):
path = '/bin:/sbin:/foo:/usr/local/sbin'
self.env['PATH'] = path
cmd_runner.sanitize_path(self.env)
expected = '%s:/usr/local/bin:/usr/sbin:/usr/bin' % path
self.assertEqual(expected, self.env['PATH'])
def test_path_unset(self):
cmd_runner.sanitize_path(self.env)
self.assertEqual(cmd_runner.DEFAULT_PATH, self.env['PATH'])
