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267 lines
8.7 KiB
267 lines
8.7 KiB
4 months ago
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#!/usr/bin/env python
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#
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# Copyright 2015 Google Inc.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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"""Bootstrap setuptools installation
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If you want to use setuptools in your package's setup.py, just include this
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file in the same directory with it, and add this to the top of your setup.py::
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from ez_setup import use_setuptools
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use_setuptools()
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If you want to require a specific version of setuptools, set a download
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mirror, or use an alternate download directory, you can do so by supplying
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the appropriate options to ``use_setuptools()``.
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This file can also be run as a script to install or upgrade setuptools.
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"""
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import sys
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DEFAULT_VERSION = "0.6c11"
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DEFAULT_URL = "http://pypi.python.org/packages/%s/s/setuptools/" % sys.version[:3]
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md5_data = {
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'setuptools-0.6c10-py2.3.egg': 'ce1e2ab5d3a0256456d9fc13800a7090',
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'setuptools-0.6c10-py2.4.egg': '57d6d9d6e9b80772c59a53a8433a5dd4',
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'setuptools-0.6c10-py2.5.egg': 'de46ac8b1c97c895572e5e8596aeb8c7',
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'setuptools-0.6c10-py2.6.egg': '58ea40aef06da02ce641495523a0b7f5',
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'setuptools-0.6c11-py2.3.egg': '2baeac6e13d414a9d28e7ba5b5a596de',
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'setuptools-0.6c11-py2.4.egg': 'bd639f9b0eac4c42497034dec2ec0c2b',
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'setuptools-0.6c11-py2.5.egg': '64c94f3bf7a72a13ec83e0b24f2749b2',
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'setuptools-0.6c11-py2.6.egg': 'bfa92100bd772d5a213eedd356d64086',
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'setuptools-0.6c8-py2.3.egg': '50759d29b349db8cfd807ba8303f1902',
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'setuptools-0.6c8-py2.4.egg': 'cba38d74f7d483c06e9daa6070cce6de',
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'setuptools-0.6c8-py2.5.egg': '1721747ee329dc150590a58b3e1ac95b',
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'setuptools-0.6c9-py2.3.egg': 'a83c4020414807b496e4cfbe08507c03',
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'setuptools-0.6c9-py2.4.egg': '260a2be2e5388d66bdaee06abec6342a',
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'setuptools-0.6c9-py2.5.egg': 'fe67c3e5a17b12c0e7c541b7ea43a8e6',
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'setuptools-0.6c9-py2.6.egg': 'ca37b1ff16fa2ede6e19383e7b59245a',
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}
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import sys, os
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try: from hashlib import md5
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except ImportError: from md5 import md5
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def _validate_md5(egg_name, data):
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if egg_name in md5_data:
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digest = md5(data).hexdigest()
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if digest != md5_data[egg_name]:
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print >>sys.stderr, (
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"md5 validation of %s failed! (Possible download problem?)"
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% egg_name
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)
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sys.exit(2)
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return data
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def use_setuptools(
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version=DEFAULT_VERSION, download_base=DEFAULT_URL, to_dir=os.curdir,
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download_delay=15
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):
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"""Automatically find/download setuptools and make it available on sys.path
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`version` should be a valid setuptools version number that is available
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as an egg for download under the `download_base` URL (which should end with
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a '/'). `to_dir` is the directory where setuptools will be downloaded, if
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it is not already available. If `download_delay` is specified, it should
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be the number of seconds that will be paused before initiating a download,
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should one be required. If an older version of setuptools is installed,
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this routine will print a message to ``sys.stderr`` and raise SystemExit in
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an attempt to abort the calling script.
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"""
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was_imported = 'pkg_resources' in sys.modules or 'setuptools' in sys.modules
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def do_download():
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egg = download_setuptools(version, download_base, to_dir, download_delay)
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sys.path.insert(0, egg)
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import setuptools; setuptools.bootstrap_install_from = egg
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try:
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import pkg_resources
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except ImportError:
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return do_download()
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try:
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pkg_resources.require("setuptools>="+version); return
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except pkg_resources.VersionConflict as e:
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if was_imported:
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print >>sys.stderr, (
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"The required version of setuptools (>=%s) is not available, and\n"
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"can't be installed while this script is running. Please install\n"
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" a more recent version first, using 'easy_install -U setuptools'."
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"\n\n(Currently using %r)"
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) % (version, e.args[0])
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sys.exit(2)
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except pkg_resources.DistributionNotFound:
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pass
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del pkg_resources, sys.modules['pkg_resources'] # reload ok
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return do_download()
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def download_setuptools(
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version=DEFAULT_VERSION, download_base=DEFAULT_URL, to_dir=os.curdir,
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delay = 15
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):
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"""Download setuptools from a specified location and return its filename
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`version` should be a valid setuptools version number that is available
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as an egg for download under the `download_base` URL (which should end
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with a '/'). `to_dir` is the directory where the egg will be downloaded.
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`delay` is the number of seconds to pause before an actual download attempt.
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"""
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import urllib2, shutil
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egg_name = "setuptools-%s-py%s.egg" % (version,sys.version[:3])
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url = download_base + egg_name
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saveto = os.path.join(to_dir, egg_name)
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src = dst = None
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if not os.path.exists(saveto): # Avoid repeated downloads
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try:
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from distutils import log
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if delay:
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log.warn("""
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---------------------------------------------------------------------------
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This script requires setuptools version %s to run (even to display
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help). I will attempt to download it for you (from
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%s), but
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you may need to enable firewall access for this script first.
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I will start the download in %d seconds.
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(Note: if this machine does not have network access, please obtain the file
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%s
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and place it in this directory before rerunning this script.)
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---------------------------------------------------------------------------""",
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version, download_base, delay, url
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); from time import sleep; sleep(delay)
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log.warn("Downloading %s", url)
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src = urllib2.urlopen(url)
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# Read/write all in one block, so we don't create a corrupt file
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# if the download is interrupted.
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data = _validate_md5(egg_name, src.read())
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dst = open(saveto,"wb"); dst.write(data)
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finally:
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if src: src.close()
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if dst: dst.close()
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return os.path.realpath(saveto)
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def main(argv, version=DEFAULT_VERSION):
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"""Install or upgrade setuptools and EasyInstall"""
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try:
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import setuptools
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except ImportError:
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egg = None
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try:
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egg = download_setuptools(version, delay=0)
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sys.path.insert(0,egg)
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from setuptools.command.easy_install import main
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return main(list(argv)+[egg]) # we're done here
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finally:
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if egg and os.path.exists(egg):
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os.unlink(egg)
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else:
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if setuptools.__version__ == '0.0.1':
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print >>sys.stderr, (
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"You have an obsolete version of setuptools installed. Please\n"
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"remove it from your system entirely before rerunning this script."
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)
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sys.exit(2)
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req = "setuptools>="+version
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import pkg_resources
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try:
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pkg_resources.require(req)
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except pkg_resources.VersionConflict:
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try:
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from setuptools.command.easy_install import main
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except ImportError:
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from easy_install import main
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main(list(argv)+[download_setuptools(delay=0)])
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sys.exit(0) # try to force an exit
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else:
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if argv:
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from setuptools.command.easy_install import main
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main(argv)
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else:
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print "Setuptools version",version,"or greater has been installed."
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print '(Run "ez_setup.py -U setuptools" to reinstall or upgrade.)'
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def update_md5(filenames):
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"""Update our built-in md5 registry"""
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import re
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for name in filenames:
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base = os.path.basename(name)
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f = open(name,'rb')
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md5_data[base] = md5(f.read()).hexdigest()
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f.close()
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data = [" %r: %r,\n" % it for it in md5_data.items()]
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data.sort()
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repl = "".join(data)
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import inspect
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srcfile = inspect.getsourcefile(sys.modules[__name__])
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f = open(srcfile, 'rb'); src = f.read(); f.close()
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match = re.search("\nmd5_data = {\n([^}]+)}", src)
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if not match:
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print >>sys.stderr, "Internal error!"
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sys.exit(2)
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src = src[:match.start(1)] + repl + src[match.end(1):]
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f = open(srcfile,'w')
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f.write(src)
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f.close()
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if __name__=='__main__':
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if len(sys.argv)>2 and sys.argv[1]=='--md5update':
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update_md5(sys.argv[2:])
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else:
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main(sys.argv[1:])
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