300 lines
9.3 KiB
Python
300 lines
9.3 KiB
Python
#!/usr/bin/python
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#
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# Copyright 2014 Huawei Technologies Co. Ltd
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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 optparse
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import os
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import shutil
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import subprocess
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import sys
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import tarfile
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import tempfile
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from distutils import log
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try:
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from site import USER_SITE
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except ImportError:
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USER_SITE = None
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DEFAULT_VERSION = "0.9.6"
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DEFAULT_URL = "https://pypi.python.org/packages/source/s/setuptools/"
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def _python_cmd(*args):
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"""run cmd in python."""
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args = (sys.executable,) + args
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return subprocess.call(args) == 0
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def _install(tarball, install_args=()):
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"""install tarball."""
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# extracting the tarball
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tmpdir = tempfile.mkdtemp()
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log.warn('Extracting in %s', tmpdir)
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old_wd = os.getcwd()
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try:
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os.chdir(tmpdir)
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tar = tarfile.open(tarball)
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_extractall(tar)
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tar.close()
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# going in the directory
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subdir = os.path.join(tmpdir, os.listdir(tmpdir)[0])
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os.chdir(subdir)
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log.warn('Now working in %s', subdir)
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# installing
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log.warn('Installing Setuptools')
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if not _python_cmd('setup.py', 'install', *install_args):
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log.warn('Something went wrong during the installation.')
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log.warn('See the error message above.')
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# exitcode will be 2
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return 2
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finally:
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os.chdir(old_wd)
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shutil.rmtree(tmpdir)
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def _build_egg(egg, tarball, to_dir):
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"""build egg."""
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# extracting the tarball
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tmpdir = tempfile.mkdtemp()
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log.warn('Extracting in %s', tmpdir)
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old_wd = os.getcwd()
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try:
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os.chdir(tmpdir)
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tar = tarfile.open(tarball)
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_extractall(tar)
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tar.close()
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# going in the directory
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subdir = os.path.join(tmpdir, os.listdir(tmpdir)[0])
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os.chdir(subdir)
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log.warn('Now working in %s', subdir)
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# building an egg
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log.warn('Building a Setuptools egg in %s', to_dir)
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_python_cmd('setup.py', '-q', 'bdist_egg', '--dist-dir', to_dir)
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finally:
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os.chdir(old_wd)
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shutil.rmtree(tmpdir)
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# returning the result
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log.warn(egg)
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if not os.path.exists(egg):
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raise IOError('Could not build the egg.')
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def _do_download(version, download_base, to_dir, download_delay):
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"""download package."""
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egg = os.path.join(to_dir, 'setuptools-%s-py%d.%d.egg'
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% (version, sys.version_info[0], sys.version_info[1]))
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if not os.path.exists(egg):
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tarball = download_setuptools(version, download_base,
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to_dir, download_delay)
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_build_egg(egg, tarball, to_dir)
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sys.path.insert(0, egg)
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import setuptools
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setuptools.bootstrap_install_from = egg
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def use_setuptools(version=DEFAULT_VERSION, download_base=DEFAULT_URL,
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to_dir=os.curdir, download_delay=15):
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"""use setuptools to do the setup."""
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# making sure we use the absolute path
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to_dir = os.path.abspath(to_dir)
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was_imported = 'pkg_resources' in sys.modules or \
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'setuptools' in sys.modules
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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(version, download_base, to_dir, download_delay)
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try:
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pkg_resources.require("setuptools>=" + version)
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return
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except pkg_resources.DistributionNotFound:
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return _do_download(version, download_base, to_dir,
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download_delay)
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except pkg_resources.VersionConflict:
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error = sys.exc_info()[1]
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if was_imported:
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sys.stderr.writelines([
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"The required version of setuptools (>=%s) is not available,",
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"and can't be installed while this script is running. Please",
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"install a more recent version first, using",
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"'easy_install -U setuptools'.",
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"",
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"(Currently using %r)" % (version, error.args[0]),
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"",
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])
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sys.exit(2)
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else:
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del pkg_resources, sys.modules['pkg_resources'] # reload ok
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return _do_download(version, download_base, to_dir,
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download_delay)
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def download_setuptools(version=DEFAULT_VERSION, download_base=DEFAULT_URL,
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to_dir=os.curdir, delay=15):
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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
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attempt.
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"""
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# making sure we use the absolute path
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to_dir = os.path.abspath(to_dir)
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try:
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from urllib.request import urlopen
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except ImportError:
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from urllib2 import urlopen
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tgz_name = "setuptools-%s.tar.gz" % version
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url = download_base + tgz_name
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saveto = os.path.join(to_dir, tgz_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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log.warn("Downloading %s", url)
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src = 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 = src.read()
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dst = open(saveto, "wb")
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dst.write(data)
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finally:
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if src:
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src.close()
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if dst:
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dst.close()
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return os.path.realpath(saveto)
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def _extractall(self, path=".", members=None):
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"""Extract all members from the archive to the current working
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directory and set owner, modification time and permissions on
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directories afterwards. `path' specifies a different directory
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to extract to. `members' is optional and must be a subset of the
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list returned by getmembers().
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"""
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import copy
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import operator
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from tarfile import ExtractError
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directories = []
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if members is None:
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members = self
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for tarinfo in members:
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if tarinfo.isdir():
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# Extract directories with a safe mode.
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directories.append(tarinfo)
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tarinfo = copy.copy(tarinfo)
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tarinfo.mode = 448 # decimal for oct 0700
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self.extract(tarinfo, path)
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# Reverse sort directories.
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if sys.version_info < (2, 4):
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def sorter(dir1, dir2):
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"""sort dir"""
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return cmp(dir1.name, dir2.name)
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directories.sort(sorter)
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directories.reverse()
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else:
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directories.sort(key=operator.attrgetter('name'), reverse=True)
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# Set correct owner, mtime and filemode on directories.
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for tarinfo in directories:
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dirpath = os.path.join(path, tarinfo.name)
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try:
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self.chown(tarinfo, dirpath)
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self.utime(tarinfo, dirpath)
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self.chmod(tarinfo, dirpath)
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except ExtractError:
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error = sys.exc_info()[1]
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if self.errorlevel > 1:
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raise
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else:
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self._dbg(1, "tarfile: %s" % error)
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def _build_install_args(options):
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"""Build install args
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Build the arguments to 'python setup.py install' on the setuptools package
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"""
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install_args = []
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if options.user_install:
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if sys.version_info < (2, 6):
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log.warn("--user requires Python 2.6 or later")
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raise SystemExit(1)
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install_args.append('--user')
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return install_args
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def _parse_args():
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"""Parse the command line for options."""
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parser = optparse.OptionParser()
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parser.add_option(
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'--user', dest='user_install', action='store_true', default=False,
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help='install in user site package (requires Python 2.6 or later)')
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parser.add_option(
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'--download-base', dest='download_base', metavar="URL",
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default=DEFAULT_URL,
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help='alternative URL from where to download the setuptools package')
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options, _ = parser.parse_args()
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# positional arguments are ignored
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return options
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def main(version=DEFAULT_VERSION):
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"""Install or upgrade setuptools and EasyInstall."""
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options = _parse_args()
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tarball = download_setuptools(download_base=options.download_base)
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return _install(tarball, _build_install_args(options))
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if __name__ == '__main__':
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sys.exit(main())
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