borenet | 0f1469b | 2016-06-15 12:07:42 -0700 | [diff] [blame] | 1 | #!/usr/bin/env python |
| 2 | # |
| 3 | # Copyright 2016 Google Inc. |
| 4 | # |
| 5 | # Use of this source code is governed by a BSD-style license that can be |
| 6 | # found in the LICENSE file. |
| 7 | |
| 8 | |
| 9 | """Utilities for zipping and unzipping files.""" |
| 10 | |
| 11 | |
| 12 | import fnmatch |
| 13 | import os |
| 14 | import zipfile |
| 15 | |
| 16 | |
| 17 | def filtered(names, blacklist): |
| 18 | """Filter the list of file or directory names.""" |
| 19 | rv = names[:] |
| 20 | for pattern in blacklist: |
| 21 | rv = [n for n in rv if not fnmatch.fnmatch(n, pattern)] |
| 22 | return rv |
| 23 | |
| 24 | |
| 25 | def zip(target_dir, zip_file, blacklist=None): # pylint: disable=W0622 |
| 26 | """Zip the given directory, write to the given zip file.""" |
| 27 | if not os.path.isdir(target_dir): |
| 28 | raise IOError('%s does not exist!' % target_dir) |
| 29 | blacklist = blacklist or [] |
mtklein | 5580c69 | 2016-08-26 10:52:19 -0700 | [diff] [blame] | 30 | with zipfile.ZipFile(zip_file, 'w', zipfile.ZIP_DEFLATED, True) as z: |
borenet | 0f1469b | 2016-06-15 12:07:42 -0700 | [diff] [blame] | 31 | for r, d, f in os.walk(target_dir, topdown=True): |
| 32 | d[:] = filtered(d, blacklist) |
| 33 | for filename in filtered(f, blacklist): |
| 34 | filepath = os.path.join(r, filename) |
| 35 | zi = zipfile.ZipInfo(filepath) |
| 36 | zi.filename = os.path.relpath(filepath, target_dir) |
| 37 | perms = os.stat(filepath).st_mode |
| 38 | zi.external_attr = perms << 16L |
mtklein | 5580c69 | 2016-08-26 10:52:19 -0700 | [diff] [blame] | 39 | zi.compress_type = zipfile.ZIP_DEFLATED |
borenet | 0f1469b | 2016-06-15 12:07:42 -0700 | [diff] [blame] | 40 | with open(filepath, 'rb') as f: |
| 41 | content = f.read() |
| 42 | z.writestr(zi, content) |
| 43 | for dirname in d: |
| 44 | dirpath = os.path.join(r, dirname) |
| 45 | z.write(dirpath, os.path.relpath(dirpath, target_dir)) |
| 46 | |
| 47 | |
| 48 | def unzip(zip_file, target_dir): |
| 49 | """Unzip the given zip file into the target dir.""" |
| 50 | if not os.path.isdir(target_dir): |
| 51 | os.makedirs(target_dir) |
mtklein | 5580c69 | 2016-08-26 10:52:19 -0700 | [diff] [blame] | 52 | with zipfile.ZipFile(zip_file, 'r', zipfile.ZIP_DEFLATED, True) as z: |
borenet | 0f1469b | 2016-06-15 12:07:42 -0700 | [diff] [blame] | 53 | for zi in z.infolist(): |
| 54 | dst_path = os.path.join(target_dir, zi.filename) |
| 55 | if zi.filename.endswith('/'): |
| 56 | os.mkdir(dst_path) |
| 57 | else: |
Brian Osman | 18b8490 | 2016-10-31 15:28:10 -0400 | [diff] [blame] | 58 | with open(dst_path, 'wb') as f: |
borenet | 0f1469b | 2016-06-15 12:07:42 -0700 | [diff] [blame] | 59 | f.write(z.read(zi)) |
| 60 | perms = zi.external_attr >> 16L |
| 61 | os.chmod(dst_path, perms) |