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add ez_setup bootstrap script

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commit 032289584e5f96a150ca63eecb090d5b7ad15e68 1 parent 7b2f1c0
Benjamin Pollack authored May 07, 2009

Showing 1 changed file with 276 additions and 0 deletions. Show diff stats Hide diff stats

  1. 276  ez_setup.py
276  ez_setup.py
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+#!python
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+"""Bootstrap setuptools installation
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+
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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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+
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+    from ez_setup import use_setuptools
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+    use_setuptools()
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+
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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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+
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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 = "0.6c9"
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+DEFAULT_URL     = "http://pypi.python.org/packages/%s/s/setuptools/" % sys.version[:3]
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+
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+md5_data = {
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+    'setuptools-0.6b1-py2.3.egg': '8822caf901250d848b996b7f25c6e6ca',
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+    'setuptools-0.6b1-py2.4.egg': 'b79a8a403e4502fbb85ee3f1941735cb',
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+    'setuptools-0.6b2-py2.3.egg': '5657759d8a6d8fc44070a9d07272d99b',
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+    'setuptools-0.6b2-py2.4.egg': '4996a8d169d2be661fa32a6e52e4f82a',
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+    'setuptools-0.6b3-py2.3.egg': 'bb31c0fc7399a63579975cad9f5a0618',
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+    'setuptools-0.6b3-py2.4.egg': '38a8c6b3d6ecd22247f179f7da669fac',
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+    'setuptools-0.6b4-py2.3.egg': '62045a24ed4e1ebc77fe039aa4e6f7e5',
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+    'setuptools-0.6b4-py2.4.egg': '4cb2a185d228dacffb2d17f103b3b1c4',
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+    'setuptools-0.6c1-py2.3.egg': 'b3f2b5539d65cb7f74ad79127f1a908c',
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+    'setuptools-0.6c1-py2.4.egg': 'b45adeda0667d2d2ffe14009364f2a4b',
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+    'setuptools-0.6c2-py2.3.egg': 'f0064bf6aa2b7d0f3ba0b43f20817c27',
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+    'setuptools-0.6c2-py2.4.egg': '616192eec35f47e8ea16cd6a122b7277',
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+    'setuptools-0.6c3-py2.3.egg': 'f181fa125dfe85a259c9cd6f1d7b78fa',
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+    'setuptools-0.6c3-py2.4.egg': 'e0ed74682c998bfb73bf803a50e7b71e',
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+    'setuptools-0.6c3-py2.5.egg': 'abef16fdd61955514841c7c6bd98965e',
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+    'setuptools-0.6c4-py2.3.egg': 'b0b9131acab32022bfac7f44c5d7971f',
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+    'setuptools-0.6c4-py2.4.egg': '2a1f9656d4fbf3c97bf946c0a124e6e2',
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+    'setuptools-0.6c4-py2.5.egg': '8f5a052e32cdb9c72bcf4b5526f28afc',
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+    'setuptools-0.6c5-py2.3.egg': 'ee9fd80965da04f2f3e6b3576e9d8167',
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+    'setuptools-0.6c5-py2.4.egg': 'afe2adf1c01701ee841761f5bcd8aa64',
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+    'setuptools-0.6c5-py2.5.egg': 'a8d3f61494ccaa8714dfed37bccd3d5d',
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+    'setuptools-0.6c6-py2.3.egg': '35686b78116a668847237b69d549ec20',
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+    'setuptools-0.6c6-py2.4.egg': '3c56af57be3225019260a644430065ab',
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+    'setuptools-0.6c6-py2.5.egg': 'b2f8a7520709a5b34f80946de5f02f53',
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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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+    '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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+
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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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+
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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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+
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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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+
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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, 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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+        else:
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+            del pkg_resources, sys.modules['pkg_resources']    # reload ok
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+            return do_download()
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+    except pkg_resources.DistributionNotFound:
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+        return do_download()
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+
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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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+
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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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+
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+(Note: if this machine does not have network access, please obtain the file
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+
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+   %s
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+
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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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+
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+
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+
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+
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+
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+
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+
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+
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+
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+
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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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+
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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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+
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+def update_md5(filenames):
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+    """Update our built-in md5 registry"""
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+
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+    import re
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+
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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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+
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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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+
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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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+
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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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+
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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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+
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+
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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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+
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+
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+
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+
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+
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+

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