def set_source_abs(self):
"""
Create source directory absolute path.
Make sure that the source exists and is a directory.
First assume that computer is the source, then try the device.
#NOTE: 1. implementation does not support path expansion
#NOTE: 2. implementation supports only directory sync
"""
source = readlink(self.source)
for prefix in (os.getcwd(), self.mtp_gvfs_path):
# Get absolute path for the specified source
# Prepend prefix if given source is a relative path
if not os.path.isabs(source):
source_abs = os.path.join(prefix, source)
else:
source_abs = source
if not os.path.exists(source_abs):
continue
if not os.path.isdir(source_abs):
raise OSError('"{source}" is not a directory'
.format(source=source_abs))
self.source_abs = source_abs
break
if self.source_abs is None:
raise OSError('"{source}" does not exists on computer '
'neither on device'.format(source=source_abs))
def set_destination_abs(self):
"""
Create destination directory absolute path.
#NOTE: implementation does not allow device only sync, i.e. that both
#NOTE: source and destination are on the device
"""
destination = readlink(self.destination)
if self.source_abs is None:
raise OSError('Source directory is not defined')
if 'mtp:host' not in self.source_abs:
# device is destination
destination_abs = os.path.join(self.mtp_gvfs_path, destination)
else:
# computer is destination
if not os.path.isabs(destination):
destination_abs = os.path.join(os.getcwd(), destination)
else:
destination_abs = destination
self.destination_abs = destination_abs
def test_readlink():
"""
Test if the auxiliary `readlink` function works as expected.
"""
assert readlink('') == ''
assert readlink('.') == os.getcwd()
assert readlink('..') == os.path.dirname(os.getcwd())
assert readlink('/..') == os.sep
assert readlink('./') == os.getcwd()
assert readlink('../') == os.path.dirname(os.getcwd())
assert readlink(os.sep) == os.sep
assert readlink('~') == '/home/{user}'.format(user=getpass.getuser())
assert readlink('~/Music') == '/home/{user}/Music'.format(user=getpass.getuser()) # NOQA
assert readlink('~/..') == '/home'
assert readlink('../../..') == '/home'
phone_card = 'Phone/Card'
assert readlink(phone_card) == phone_card
nonexisting = 'nonexisting_path'
assert readlink(nonexisting) == os.path.join(os.getcwd(), nonexisting)
