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#!/usr/bin/python
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# A script to recursively update a CVS checkout, skipping directories for
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# languages you do not know or care about. Useful for translators who only want
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# a checkout of the directories for English and their own language.
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#
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# This special script is needed because:
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# - "cvs up -d" will check out languages most people usually do not care about
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# - however plain "cvs up" does not create directories newly created in the
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# repository
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#
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# Copyright 2010 Marcin Owsiany <porridge@debian.org>
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import sys
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import logging
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import os
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import subprocess
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logging.basicConfig(level=logging.INFO)
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logging.info('Getting list of entries in the repository.')
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# Set LANG=C as we need to parse command output
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env = dict(os.environ)
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env['LANG'] = 'C'
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lines = subprocess.Popen(['cvs', 'ls', '-l'], stdout=subprocess.PIPE, env=env).communicate()[0]
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repo_dirs = set()
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for line in lines.split('\n'):
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if not line:
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pass
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elif line.startswith('-'):
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pass
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elif line.startswith('d'):
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repo_dirs.add(line.split(None, 4)[4])
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else:
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logging.warn('Unexpected line: %s', line)
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logging.info('Getting list of known languages.')
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lines = subprocess.Popen(['make', 'list-languages'], stdout=subprocess.PIPE).communicate()[0]
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langs = set(lines.split())
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logging.info('Getting list of checked-out directories.')
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local_dirs = set(e for e in os.listdir('.') if os.path.isdir(e))
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logging.debug('Dirs in repo: %s', ' '.join(sorted(repo_dirs)))
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logging.debug('LANGS : %s', ' '.join(sorted(langs)))
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logging.debug('Dirs in . : %s', ' '.join(sorted(local_dirs)))
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# We want:
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# - all currently checked out directories (i.e. ones that exist locally and in
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# the repository)
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checked_out = local_dirs.intersection(repo_dirs)
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# - all directories in repo that are not langs
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specials = repo_dirs - langs
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# However we do not want e.g. stale language directories which are being
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# transitioned to a new name. So we keep a list of known non-language
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# directories, and we warn (and ignore) if the above encounters anything else.
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known_specials = set(['Perl', 'po'])
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mysterious = specials - known_specials
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to_update = known_specials | checked_out
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if to_update:
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logging.info('Updating recursively: %s', ' '.join(to_update))
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subprocess.Popen(['cvs', '-q', 'up', '-dP'] + sorted(list(to_update))).wait()
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else:
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logging.warn('No directories to update recursively.')
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logging.info('Updating current directory.')
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subprocess.Popen(['cvs', '-q', 'up', '-lP']).wait()
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if mysterious:
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logging.warn('The following directories exist in repo but are neither '
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'known special dirs nor in LANGUAGES in top Makefile. '
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'Please delete them or add to known_specials in %s: %s',
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sys.argv[0], ' '.join(mysterious))
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