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author | jamesr <jamesr@chromium.org> | 2014-11-04 21:41:41 -0800 |
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committer | Commit bot <commit-bot@chromium.org> | 2014-11-05 05:43:09 +0000 |
commit | d27b8840552bff045a35852d94ea45ed4cbc8686 (patch) | |
tree | c6e0cd222f824968f1804329126df781b898fa42 /mojo/tools/pylib/transitive_hash.py | |
parent | 4df3c4366015739a7c6b6c1539a8d7c9198e38ef (diff) | |
download | chromium_src-d27b8840552bff045a35852d94ea45ed4cbc8686.zip chromium_src-d27b8840552bff045a35852d94ea45ed4cbc8686.tar.gz chromium_src-d27b8840552bff045a35852d94ea45ed4cbc8686.tar.bz2 |
Remove mojo/tools/, not needed in chromium
R=sky@chromium.org
Review URL: https://codereview.chromium.org/705703002
Cr-Commit-Position: refs/heads/master@{#302758}
Diffstat (limited to 'mojo/tools/pylib/transitive_hash.py')
-rw-r--r-- | mojo/tools/pylib/transitive_hash.py | 89 |
1 files changed, 0 insertions, 89 deletions
diff --git a/mojo/tools/pylib/transitive_hash.py b/mojo/tools/pylib/transitive_hash.py deleted file mode 100644 index 93e8dc4..0000000 --- a/mojo/tools/pylib/transitive_hash.py +++ /dev/null @@ -1,89 +0,0 @@ -# Copyright 2014 The Chromium Authors. All rights reserved. -# Use of this source code is governed by a BSD-style license that can be -# found in the LICENSE file. - -import logging -import subprocess -import sys - -from hashlib import sha256 -from os.path import basename, realpath - -_logging = logging.getLogger() - -# Based on/taken from -# http://code.activestate.com/recipes/578231-probably-the-fastest-memoization-decorator-in-the-/ -# (with cosmetic changes). -def _memoize(f): - """Memoization decorator for a function taking a single argument.""" - class Memoize(dict): - def __missing__(self, key): - rv = self[key] = f(key) - return rv - return Memoize().__getitem__ - -@_memoize -def _file_hash(filename): - """Returns a string representing the hash of the given file.""" - _logging.debug("Hashing %s ...", filename) - rv = subprocess.check_output(['sha256sum', '-b', filename]).split(None, 1)[0] - _logging.debug(" => %s", rv) - return rv - -@_memoize -def _get_dependencies(filename): - """Returns a list of filenames for files that the given file depends on.""" - _logging.debug("Getting dependencies for %s ...", filename) - lines = subprocess.check_output(['ldd', filename]).splitlines() - rv = [] - for line in lines: - i = line.find('/') - if i < 0: - _logging.debug(" => no file found in line: %s", line) - continue - rv.append(line[i:].split(None, 1)[0]) - _logging.debug(" => %s", rv) - return rv - -def transitive_hash(filename): - """Returns a string that represents the "transitive" hash of the given - file. The transitive hash is a hash of the file and all the shared libraries - on which it depends (done in an order-independent way).""" - hashes = set() - to_hash = [filename] - while to_hash: - current_filename = realpath(to_hash.pop()) - current_hash = _file_hash(current_filename) - if current_hash in hashes: - _logging.debug("Already seen %s (%s) ...", current_filename, current_hash) - continue - _logging.debug("Haven't seen %s (%s) ...", current_filename, current_hash) - hashes.add(current_hash) - to_hash.extend(_get_dependencies(current_filename)) - return sha256('|'.join(sorted(hashes))).hexdigest() - -def main(argv): - logging.basicConfig() - # Uncomment to debug: - # _logging.setLevel(logging.DEBUG) - - if len(argv) < 2: - print """\ -Usage: %s [file] ... - -Prints the \"transitive\" hash of each (executable) file. The transitive -hash is a hash of the file and all the shared libraries on which it -depends (done in an order-independent way).""" % basename(argv[0]) - return 0 - - rv = 0 - for filename in argv[1:]: - try: - print transitive_hash(filename), filename - except: - print "ERROR", filename - rv = 1 - return rv - -if __name__ == '__main__': - sys.exit(main(sys.argv)) |