def link(conf, args):
'''Link all files in the repo directory to their configured locations.'''
# load our machine id so we know which files to link
machine_id = config.get_machine_id()
# map all file paths to their destination configs for this machine
links = {}
for path in os.listdir(constants.REPO_DIR):
path = util.normalize_to_root(path, constants.REPO_DIR)
is_hidden = util.is_hidden(path)
is_ignored = path in conf['ignore']
if not is_hidden and not is_ignored:
# load the config for the given path
file_config = config.get_file_config(path, conf['destination'])
# if the file belongs on this machine, store its config
if config.machine_matches(machine_id, file_config['machines']):
links[path] = file_config
# find the longest link basename for pretty output formatting
max_src_width = 0
if len(links) > 0:
max_src_width = max(len(os.path.basename(k)) for k in links.keys())
# link the files to their destination(s)
link_symbol = ' -> '
for src, info in links.iteritems():
msg = os.path.basename(src).rjust(max_src_width)
msg += color.grey(link_symbol)
for i, dest in enumerate(info['paths']):
# the color of the link destination, different when we're creating a new
# link, overwriting a link, and overwriting a normal file.
dest_color = 'green'
if os.path.lexists(dest):
dest_color = 'cyan'
if not os.path.islink(dest):
dest_color = 'yellow'
# do the symlink unless we're doing a dry run
if not args.test:
# overwrite links only by default, everything if forcing
overwrite = True if args.force else None
util.symlink(dest, src, overwrite=overwrite)
# pad the left space if we're not the first item, since items with
# multiple destinations are all under the same link name and symbol.
if i > 0:
msg += os.linesep
msg += ' ' * (max_src_width + len(link_symbol))
msg += color.colored(dest, dest_color)
print(msg)
# return the created links for good measure
return links
def get_file_config(path, dest):
'''
Return a normalized config for the given path. If a config file exists for the
given path, returns its contents instead and skips parsing.
'''
# normalize our path to the destination directory first
path = util.normalize_to_root(path, dest)
# immediately return the config as written if one exists
config = load_file_config_file(path, dest)
if config is not None:
return config
# otherwise, parse and return the file name itself
return parse_file_config(path, dest)
def normalize_file_config(config, dest):
'''Turn a file config into a normalized variant.'''
# an empty config with all the expected keys
result = {
'paths': [],
'machines': [],
}
if 'paths' in config:
# normalize all paths names to our destination directory
paths = [util.normalize_to_root(p, dest) for p in set(config['paths'])]
result['paths'] = sorted(paths)
if 'machines' in config:
result['machines'] = sorted(frozenset(config['machines']))
return result
