Created
April 13, 2011 15:56
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Python script to facilitate the hardlinking of directories and their files.
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#!/usr/bin/env python | |
# | |
# Python script to facilitate the hardlinking of directories and their files. | |
import sys | |
if sys.version_info < (2, 3): | |
raise RuntimeError('Python 2.3+ is required.') | |
import logging | |
import optparse | |
import os | |
version = '\nhardlinkify-1.0 - by Jake Wharton <jakewharton@gmail.com>\n' | |
#CLI argument parser | |
parser = optparse.OptionParser(usage='Usage: %prog [options] source [source ...] destination', version=version) | |
parser.add_option('-d', '--debug', dest='is_debug', action='store_true', default=False, help='print detailed execution information') | |
parser.add_option('-q', '--quiet', dest='is_quiet', action='store_true', default=False, help='no output except warnings and errors') | |
options, targets = parser.parse_args() | |
#Print version if not quiet | |
if not options.is_quiet: | |
parser.print_version() | |
#Logging setup | |
level = logging.INFO | |
if options.is_quiet: | |
level = logging.WARN | |
if options.is_debug: | |
level = logging.DEBUG | |
logging.basicConfig(format='%(asctime)s %(levelname)-7s %(message)s') | |
logger = logging.getLogger(os.path.basename(__file__)) | |
logger.setLevel(level) | |
#Error checking | |
if options.is_quiet and options.is_debug: | |
logger.warn('Options --quiet and --debug are mutually exclusive. Ignoring --quiet.') | |
if len(targets) < 2: | |
logger.error('You must specify at least one source and the destination.') | |
sys.exit(1) | |
def link(file=None, dest=None, unroll=False): | |
if file is None: | |
raise ValueError('File parameter is required.') | |
if dest is None: | |
raise ValueError('Destination parameter is required.') | |
if not os.path.exists(file): | |
logger.warn('File "%s" does not exist. Skipping.', file) | |
return | |
elif os.path.isdir(file): | |
if unroll: | |
logger.debug('Unrolling directory "%s" in "%s".', file, dest) | |
new_dest = dest if unroll else os.path.join(dest, os.path.basename(file)) | |
for new_file_name in os.listdir(file): | |
new_file = os.path.join(file, new_file_name) | |
logger.debug('> link("%s", "%s")', new_file, new_dest) | |
link(new_file, new_dest) | |
return | |
if not os.path.exists(dest): | |
logger.info('Directory "%s" does not exist. Creating.', dest) | |
os.makedirs(dest) | |
new_file = os.path.join(dest, os.path.basename(file)) | |
if os.path.exists(new_file): | |
logger.warn('File "%s" already exists. Skipping.', new_file) | |
return | |
logger.info('Linking "%s" to "%s"...', new_file, file) | |
os.link(file, new_file) | |
#Get arguments and perform linking | |
destination = os.path.abspath(targets[-1]) | |
logger.debug('Destination: %s', destination) | |
files = [os.path.abspath(file) for file in targets[:-1]] | |
for file in files: | |
logger.debug('File: %s', file) | |
for file in files: | |
logger.debug('> link("%s", "%s")', file, destination) | |
link(file, destination, True) |
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