+++ /dev/null
-#!/usr/bin/env python
-
-"""
-Setuptools bootstrapping installer.
-
-Maintained at https://github.com/pypa/setuptools/tree/bootstrap.
-
-Run this script to install or upgrade setuptools.
-"""
-
-import os
-import shutil
-import sys
-import tempfile
-import zipfile
-import optparse
-import subprocess
-import platform
-import textwrap
-import contextlib
-import json
-import codecs
-
-from distutils import log
-
-try:
- from urllib.request import urlopen
- from urllib.parse import urljoin
-except ImportError:
- from urllib2 import urlopen
- from urlparse import urljoin
-
-try:
- from site import USER_SITE
-except ImportError:
- USER_SITE = None
-
-LATEST = object()
-DEFAULT_VERSION = LATEST
-DEFAULT_URL = "https://pypi.io/packages/source/s/setuptools/"
-DEFAULT_SAVE_DIR = os.curdir
-
-MEANINGFUL_INVALID_ZIP_ERR_MSG = 'Maybe {0} is corrupted, delete it and try again.'
-
-
-def _python_cmd(*args):
- """
- Execute a command.
-
- Return True if the command succeeded.
- """
- args = (sys.executable,) + args
- return subprocess.call(args) == 0
-
-
-def _install(archive_filename, install_args=()):
- """Install Setuptools."""
- with archive_context(archive_filename):
- # installing
- log.warn('Installing Setuptools')
- if not _python_cmd('setup.py', 'install', *install_args):
- log.warn('Something went wrong during the installation.')
- log.warn('See the error message above.')
- # exitcode will be 2
- return 2
-
-
-def _build_egg(egg, archive_filename, to_dir):
- """Build Setuptools egg."""
- with archive_context(archive_filename):
- # building an egg
- log.warn('Building a Setuptools egg in %s', to_dir)
- _python_cmd('setup.py', '-q', 'bdist_egg', '--dist-dir', to_dir)
- # returning the result
- log.warn(egg)
- if not os.path.exists(egg):
- raise IOError('Could not build the egg.')
-
-
-class ContextualZipFile(zipfile.ZipFile):
-
- """Supplement ZipFile class to support context manager for Python 2.6."""
-
- def __enter__(self):
- return self
-
- def __exit__(self, type, value, traceback):
- self.close()
-
- def __new__(cls, *args, **kwargs):
- """Construct a ZipFile or ContextualZipFile as appropriate."""
- if hasattr(zipfile.ZipFile, '__exit__'):
- return zipfile.ZipFile(*args, **kwargs)
- return super(ContextualZipFile, cls).__new__(cls)
-
-
-@contextlib.contextmanager
-def archive_context(filename):
- """
- Unzip filename to a temporary directory, set to the cwd.
-
- The unzipped target is cleaned up after.
- """
- tmpdir = tempfile.mkdtemp()
- log.warn('Extracting in %s', tmpdir)
- old_wd = os.getcwd()
- try:
- os.chdir(tmpdir)
- try:
- with ContextualZipFile(filename) as archive:
- archive.extractall()
- except zipfile.BadZipfile as err:
- if not err.args:
- err.args = ('', )
- err.args = err.args + (
- MEANINGFUL_INVALID_ZIP_ERR_MSG.format(filename),
- )
- raise
-
- # going in the directory
- subdir = os.path.join(tmpdir, os.listdir(tmpdir)[0])
- os.chdir(subdir)
- log.warn('Now working in %s', subdir)
- yield
-
- finally:
- os.chdir(old_wd)
- shutil.rmtree(tmpdir)
-
-
-def _do_download(version, download_base, to_dir, download_delay):
- """Download Setuptools."""
- py_desig = 'py{sys.version_info[0]}.{sys.version_info[1]}'.format(sys=sys)
- tp = 'setuptools-{version}-{py_desig}.egg'
- egg = os.path.join(to_dir, tp.format(**locals()))
- if not os.path.exists(egg):
- archive = download_setuptools(version, download_base,
- to_dir, download_delay)
- _build_egg(egg, archive, to_dir)
- sys.path.insert(0, egg)
-
- # Remove previously-imported pkg_resources if present (see
- # https://bitbucket.org/pypa/setuptools/pull-request/7/ for details).
- if 'pkg_resources' in sys.modules:
- _unload_pkg_resources()
-
- import setuptools
- setuptools.bootstrap_install_from = egg
-
-
-def use_setuptools(
- version=DEFAULT_VERSION, download_base=DEFAULT_URL,
- to_dir=DEFAULT_SAVE_DIR, download_delay=15):
- """
- Ensure that a setuptools version is installed.
-
- Return None. Raise SystemExit if the requested version
- or later cannot be installed.
- """
- version = _resolve_version(version)
- to_dir = os.path.abspath(to_dir)
-
- # prior to importing, capture the module state for
- # representative modules.
- rep_modules = 'pkg_resources', 'setuptools'
- imported = set(sys.modules).intersection(rep_modules)
-
- try:
- import pkg_resources
- pkg_resources.require("setuptools>=" + version)
- # a suitable version is already installed
- return
- except ImportError:
- # pkg_resources not available; setuptools is not installed; download
- pass
- except pkg_resources.DistributionNotFound:
- # no version of setuptools was found; allow download
- pass
- except pkg_resources.VersionConflict as VC_err:
- if imported:
- _conflict_bail(VC_err, version)
-
- # otherwise, unload pkg_resources to allow the downloaded version to
- # take precedence.
- del pkg_resources
- _unload_pkg_resources()
-
- return _do_download(version, download_base, to_dir, download_delay)
-
-
-def _conflict_bail(VC_err, version):
- """
- Setuptools was imported prior to invocation, so it is
- unsafe to unload it. Bail out.
- """
- conflict_tmpl = textwrap.dedent("""
- The required version of setuptools (>={version}) is not available,
- and can't be installed while this script is running. Please
- install a more recent version first, using
- 'easy_install -U setuptools'.
-
- (Currently using {VC_err.args[0]!r})
- """)
- msg = conflict_tmpl.format(**locals())
- sys.stderr.write(msg)
- sys.exit(2)
-
-
-def _unload_pkg_resources():
- sys.meta_path = [
- importer
- for importer in sys.meta_path
- if importer.__class__.__module__ != 'pkg_resources.extern'
- ]
- del_modules = [
- name for name in sys.modules
- if name.startswith('pkg_resources')
- ]
- for mod_name in del_modules:
- del sys.modules[mod_name]
-
-
-def _clean_check(cmd, target):
- """
- Run the command to download target.
-
- If the command fails, clean up before re-raising the error.
- """
- try:
- subprocess.check_call(cmd)
- except subprocess.CalledProcessError:
- if os.access(target, os.F_OK):
- os.unlink(target)
- raise
-
-
-def download_file_powershell(url, target):
- """
- Download the file at url to target using Powershell.
-
- Powershell will validate trust.
- Raise an exception if the command cannot complete.
- """
- target = os.path.abspath(target)
- ps_cmd = (
- "[System.Net.WebRequest]::DefaultWebProxy.Credentials = "
- "[System.Net.CredentialCache]::DefaultCredentials; "
- '(new-object System.Net.WebClient).DownloadFile("%(url)s", "%(target)s")'
- % locals()
- )
- cmd = [
- 'powershell',
- '-Command',
- ps_cmd,
- ]
- _clean_check(cmd, target)
-
-
-def has_powershell():
- """Determine if Powershell is available."""
- if platform.system() != 'Windows':
- return False
- cmd = ['powershell', '-Command', 'echo test']
- with open(os.path.devnull, 'wb') as devnull:
- try:
- subprocess.check_call(cmd, stdout=devnull, stderr=devnull)
- except Exception:
- return False
- return True
-download_file_powershell.viable = has_powershell
-
-
-def download_file_curl(url, target):
- cmd = ['curl', url, '--location', '--silent', '--output', target]
- _clean_check(cmd, target)
-
-
-def has_curl():
- cmd = ['curl', '--version']
- with open(os.path.devnull, 'wb') as devnull:
- try:
- subprocess.check_call(cmd, stdout=devnull, stderr=devnull)
- except Exception:
- return False
- return True
-download_file_curl.viable = has_curl
-
-
-def download_file_wget(url, target):
- cmd = ['wget', url, '--quiet', '--output-document', target]
- _clean_check(cmd, target)
-
-
-def has_wget():
- cmd = ['wget', '--version']
- with open(os.path.devnull, 'wb') as devnull:
- try:
- subprocess.check_call(cmd, stdout=devnull, stderr=devnull)
- except Exception:
- return False
- return True
-download_file_wget.viable = has_wget
-
-
-def download_file_insecure(url, target):
- """Use Python to download the file, without connection authentication."""
- src = urlopen(url)
- try:
- # Read all the data in one block.
- data = src.read()
- finally:
- src.close()
-
- # Write all the data in one block to avoid creating a partial file.
- with open(target, "wb") as dst:
- dst.write(data)
-download_file_insecure.viable = lambda: True
-
-
-def get_best_downloader():
- downloaders = (
- download_file_powershell,
- download_file_curl,
- download_file_wget,
- download_file_insecure,
- )
- viable_downloaders = (dl for dl in downloaders if dl.viable())
- return next(viable_downloaders, None)
-
-
-def download_setuptools(
- version=DEFAULT_VERSION, download_base=DEFAULT_URL,
- to_dir=DEFAULT_SAVE_DIR, delay=15,
- downloader_factory=get_best_downloader):
- """
- Download setuptools from a specified location and return its filename.
-
- `version` should be a valid setuptools version number that is available
- as an sdist for download under the `download_base` URL (which should end
- with a '/'). `to_dir` is the directory where the egg will be downloaded.
- `delay` is the number of seconds to pause before an actual download
- attempt.
-
- ``downloader_factory`` should be a function taking no arguments and
- returning a function for downloading a URL to a target.
- """
- version = _resolve_version(version)
- # making sure we use the absolute path
- to_dir = os.path.abspath(to_dir)
- zip_name = "setuptools-%s.zip" % version
- url = download_base + zip_name
- saveto = os.path.join(to_dir, zip_name)
- if not os.path.exists(saveto): # Avoid repeated downloads
- log.warn("Downloading %s", url)
- downloader = downloader_factory()
- downloader(url, saveto)
- return os.path.realpath(saveto)
-
-
-def _resolve_version(version):
- """
- Resolve LATEST version
- """
- if version is not LATEST:
- return version
-
- meta_url = urljoin(DEFAULT_URL, '/pypi/setuptools/json')
- resp = urlopen(meta_url)
- with contextlib.closing(resp):
- try:
- charset = resp.info().get_content_charset()
- except Exception:
- # Python 2 compat; assume UTF-8
- charset = 'UTF-8'
- reader = codecs.getreader(charset)
- doc = json.load(reader(resp))
-
- return str(doc['info']['version'])
-
-
-def _build_install_args(options):
- """
- Build the arguments to 'python setup.py install' on the setuptools package.
-
- Returns list of command line arguments.
- """
- return ['--user'] if options.user_install else []
-
-
-def _parse_args():
- """Parse the command line for options."""
- parser = optparse.OptionParser()
- parser.add_option(
- '--user', dest='user_install', action='store_true', default=False,
- help='install in user site package')
- parser.add_option(
- '--download-base', dest='download_base', metavar="URL",
- default=DEFAULT_URL,
- help='alternative URL from where to download the setuptools package')
- parser.add_option(
- '--insecure', dest='downloader_factory', action='store_const',
- const=lambda: download_file_insecure, default=get_best_downloader,
- help='Use internal, non-validating downloader'
- )
- parser.add_option(
- '--version', help="Specify which version to download",
- default=DEFAULT_VERSION,
- )
- parser.add_option(
- '--to-dir',
- help="Directory to save (and re-use) package",
- default=DEFAULT_SAVE_DIR,
- )
- options, args = parser.parse_args()
- # positional arguments are ignored
- return options
-
-
-def _download_args(options):
- """Return args for download_setuptools function from cmdline args."""
- return dict(
- version=options.version,
- download_base=options.download_base,
- downloader_factory=options.downloader_factory,
- to_dir=options.to_dir,
- )
-
-
-def main():
- """Install or upgrade setuptools and EasyInstall."""
- options = _parse_args()
- archive = download_setuptools(**_download_args(options))
- return _install(archive, _build_install_args(options))
-
-if __name__ == '__main__':
- sys.exit(main())
projects / sqlconvert.git / commitdiff