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c9653af82a
This works only if setup.py is invoked as "./setup.py install" (or "python ./setup.py install" or whatever). It doesn't work if it is invoked by easy_install. On the other hand, I don't know why easy_install would execute ez_setup.py anyway -- I thought that it didn't execute the setup.py scripts. See this mailing list thread for details: http://mail.python.org/pipermail/distutils-sig/2007-October/008339.html
203 lines
7.4 KiB
Python
203 lines
7.4 KiB
Python
#!/usr/bin/env python
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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 os, sys
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DEFAULT_VERSION = "0.6c7"
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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-0.6c7-py2.3.egg': '209fdf9adc3a615e5115b725658e13e2',
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'setuptools-0.6c7-py2.4.egg': '5a8f954807d46a0fb67cf1f26c55a82e',
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'setuptools-0.6c7-py2.5.egg': '45d2ad28f9750e7434111fde831e8372',
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}
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def _validate_md5(egg_name, data):
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if egg_name in md5_data:
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from md5 import md5
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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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# The following code to parse versions is copied from pkg_resources.py so that
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# we can parse versions without importing that module.
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import re
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component_re = re.compile(r'(\d+ | [a-z]+ | \.| -)', re.VERBOSE)
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replace = {'pre':'c', 'preview':'c','-':'final-','rc':'c','dev':'@'}.get
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def _parse_version_parts(s):
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for part in component_re.split(s):
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part = replace(part,part)
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if not part or part=='.':
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continue
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if part[:1] in '0123456789':
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yield part.zfill(8) # pad for numeric comparison
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else:
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yield '*'+part
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yield '*final' # ensure that alpha/beta/candidate are before final
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def parse_version(s):
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parts = []
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for part in _parse_version_parts(s.lower()):
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if part.startswith('*'):
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if part<'*final': # remove '-' before a prerelease tag
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while parts and parts[-1]=='*final-': parts.pop()
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# remove trailing zeros from each series of numeric parts
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while parts and parts[-1]=='00000000':
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parts.pop()
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parts.append(part)
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return tuple(parts)
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def setuptools_is_new_enough(required_version):
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"""Return True if setuptools is already installed and has a version
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number >= required_version."""
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(cin, cout, cerr,) = os.popen3("%s -c \"import setuptools;print setuptools.__version__\"" % (sys.executable,))
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verstr = cout.read().strip()
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ver = parse_version(verstr)
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return ver and ver >= parse_version(required_version)
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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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min_version=None, 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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if min_version is None:
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min_version = version
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if not setuptools_is_new_enough(min_version):
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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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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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if setuptools_is_new_enough(version):
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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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else:
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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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def update_md5(filenames):
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"""Update our built-in md5 registry"""
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import re
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from md5 import md5
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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 '--md5update' in sys.argv:
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sys.argv.remove('--md5update')
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update_md5(sys.argv[1:])
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else:
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main(sys.argv[1:])
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