Ticket #12921: patch-ez_setup.py

File patch-ez_setup.py, 9.1 KB (added by roger.hoover@…, 17 years ago)
Line 
1--- /dev/null   2007-10-16 12:27:58.000000000 -0700
2+++ ez_setup.py 2007-10-16 12:34:15.000000000 -0700
3@@ -0,0 +1,234 @@
4+#!python
5+"""Bootstrap setuptools installation
6+
7+If you want to use setuptools in your package's setup.py, just include this
8+file in the same directory with it, and add this to the top of your setup.py::
9+
10+    from ez_setup import use_setuptools
11+    use_setuptools()
12+
13+If you want to require a specific version of setuptools, set a download
14+mirror, or use an alternate download directory, you can do so by supplying
15+the appropriate options to ``use_setuptools()``.
16+
17+This file can also be run as a script to install or upgrade setuptools.
18+"""
19+import sys
20+DEFAULT_VERSION = "0.6c7"
21+DEFAULT_URL     = "http://pypi.python.org/packages/%s/s/setuptools/" % sys.version[:3]
22+
23+md5_data = {
24+    'setuptools-0.6b1-py2.3.egg': '8822caf901250d848b996b7f25c6e6ca',
25+    'setuptools-0.6b1-py2.4.egg': 'b79a8a403e4502fbb85ee3f1941735cb',
26+    'setuptools-0.6b2-py2.3.egg': '5657759d8a6d8fc44070a9d07272d99b',
27+    'setuptools-0.6b2-py2.4.egg': '4996a8d169d2be661fa32a6e52e4f82a',
28+    'setuptools-0.6b3-py2.3.egg': 'bb31c0fc7399a63579975cad9f5a0618',
29+    'setuptools-0.6b3-py2.4.egg': '38a8c6b3d6ecd22247f179f7da669fac',
30+    'setuptools-0.6b4-py2.3.egg': '62045a24ed4e1ebc77fe039aa4e6f7e5',
31+    'setuptools-0.6b4-py2.4.egg': '4cb2a185d228dacffb2d17f103b3b1c4',
32+    'setuptools-0.6c1-py2.3.egg': 'b3f2b5539d65cb7f74ad79127f1a908c',
33+    'setuptools-0.6c1-py2.4.egg': 'b45adeda0667d2d2ffe14009364f2a4b',
34+    'setuptools-0.6c2-py2.3.egg': 'f0064bf6aa2b7d0f3ba0b43f20817c27',
35+    'setuptools-0.6c2-py2.4.egg': '616192eec35f47e8ea16cd6a122b7277',
36+    'setuptools-0.6c3-py2.3.egg': 'f181fa125dfe85a259c9cd6f1d7b78fa',
37+    'setuptools-0.6c3-py2.4.egg': 'e0ed74682c998bfb73bf803a50e7b71e',
38+    'setuptools-0.6c3-py2.5.egg': 'abef16fdd61955514841c7c6bd98965e',
39+    'setuptools-0.6c4-py2.3.egg': 'b0b9131acab32022bfac7f44c5d7971f',
40+    'setuptools-0.6c4-py2.4.egg': '2a1f9656d4fbf3c97bf946c0a124e6e2',
41+    'setuptools-0.6c4-py2.5.egg': '8f5a052e32cdb9c72bcf4b5526f28afc',
42+    'setuptools-0.6c5-py2.3.egg': 'ee9fd80965da04f2f3e6b3576e9d8167',
43+    'setuptools-0.6c5-py2.4.egg': 'afe2adf1c01701ee841761f5bcd8aa64',
44+    'setuptools-0.6c5-py2.5.egg': 'a8d3f61494ccaa8714dfed37bccd3d5d',
45+    'setuptools-0.6c6-py2.3.egg': '35686b78116a668847237b69d549ec20',
46+    'setuptools-0.6c6-py2.4.egg': '3c56af57be3225019260a644430065ab',
47+    'setuptools-0.6c6-py2.5.egg': 'b2f8a7520709a5b34f80946de5f02f53',
48+    'setuptools-0.6c7-py2.3.egg': '209fdf9adc3a615e5115b725658e13e2',
49+    'setuptools-0.6c7-py2.4.egg': '5a8f954807d46a0fb67cf1f26c55a82e',
50+    'setuptools-0.6c7-py2.5.egg': '45d2ad28f9750e7434111fde831e8372',
51+}
52+
53+import sys, os
54+
55+def _validate_md5(egg_name, data):
56+    if egg_name in md5_data:
57+        from md5 import md5
58+        digest = md5(data).hexdigest()
59+        if digest != md5_data[egg_name]:
60+            print >>sys.stderr, (
61+                "md5 validation of %s failed!  (Possible download problem?)"
62+                % egg_name
63+            )
64+            sys.exit(2)
65+    return data
66+
67+
68+def use_setuptools(
69+    version=DEFAULT_VERSION, download_base=DEFAULT_URL, to_dir=os.curdir,
70+    download_delay=15
71+):
72+    """Automatically find/download setuptools and make it available on sys.path
73+
74+    `version` should be a valid setuptools version number that is available
75+    as an egg for download under the `download_base` URL (which should end with
76+    a '/').  `to_dir` is the directory where setuptools will be downloaded, if
77+    it is not already available.  If `download_delay` is specified, it should
78+    be the number of seconds that will be paused before initiating a download,
79+    should one be required.  If an older version of setuptools is installed,
80+    this routine will print a message to ``sys.stderr`` and raise SystemExit in
81+    an attempt to abort the calling script.
82+    """
83+    try:
84+        import setuptools
85+        if setuptools.__version__ == '0.0.1':
86+            print >>sys.stderr, (
87+            "You have an obsolete version of setuptools installed.  Please\n"
88+            "remove it from your system entirely before rerunning this script."
89+            )
90+            sys.exit(2)
91+    except ImportError:
92+        egg = download_setuptools(version, download_base, to_dir, download_delay)
93+        sys.path.insert(0, egg)
94+        import setuptools; setuptools.bootstrap_install_from = egg
95+
96+    import pkg_resources
97+    try:
98+        pkg_resources.require("setuptools>="+version)
99+
100+    except pkg_resources.VersionConflict, e:
101+        # XXX could we install in a subprocess here?
102+        print >>sys.stderr, (
103+            "The required version of setuptools (>=%s) is not available, and\n"
104+            "can't be installed while this script is running. Please install\n"
105+            " a more recent version first.\n\n(Currently using %r)"
106+        ) % (version, e.args[0])
107+        sys.exit(2)
108+
109+def download_setuptools(
110+    version=DEFAULT_VERSION, download_base=DEFAULT_URL, to_dir=os.curdir,
111+    delay = 15
112+):
113+    """Download setuptools from a specified location and return its filename
114+
115+    `version` should be a valid setuptools version number that is available
116+    as an egg for download under the `download_base` URL (which should end
117+    with a '/'). `to_dir` is the directory where the egg will be downloaded.
118+    `delay` is the number of seconds to pause before an actual download attempt.
119+    """
120+    import urllib2, shutil
121+    egg_name = "setuptools-%s-py%s.egg" % (version,sys.version[:3])
122+    url = download_base + egg_name
123+    saveto = os.path.join(to_dir, egg_name)
124+    src = dst = None
125+    if not os.path.exists(saveto):  # Avoid repeated downloads
126+        try:
127+            from distutils import log
128+            if delay:
129+                log.warn("""
130+---------------------------------------------------------------------------
131+This script requires setuptools version %s to run (even to display
132+help).  I will attempt to download it for you (from
133+%s), but
134+you may need to enable firewall access for this script first.
135+I will start the download in %d seconds.
136+
137+(Note: if this machine does not have network access, please obtain the file
138+
139+   %s
140+
141+and place it in this directory before rerunning this script.)
142+---------------------------------------------------------------------------""",
143+                    version, download_base, delay, url
144+                ); from time import sleep; sleep(delay)
145+            log.warn("Downloading %s", url)
146+            src = urllib2.urlopen(url)
147+            # Read/write all in one block, so we don't create a corrupt file
148+            # if the download is interrupted.
149+            data = _validate_md5(egg_name, src.read())
150+            dst = open(saveto,"wb"); dst.write(data)
151+        finally:
152+            if src: src.close()
153+            if dst: dst.close()
154+    return os.path.realpath(saveto)
155+
156+def main(argv, version=DEFAULT_VERSION):
157+    """Install or upgrade setuptools and EasyInstall"""
158+
159+    try:
160+        import setuptools
161+    except ImportError:
162+        egg = None
163+        try:
164+            egg = download_setuptools(version, delay=0)
165+            sys.path.insert(0,egg)
166+            from setuptools.command.easy_install import main
167+            return main(list(argv)+[egg])   # we're done here
168+        finally:
169+            if egg and os.path.exists(egg):
170+                os.unlink(egg)
171+    else:
172+        if setuptools.__version__ == '0.0.1':
173+            # tell the user to uninstall obsolete version
174+            use_setuptools(version)
175+
176+    req = "setuptools>="+version
177+    import pkg_resources
178+    try:
179+        pkg_resources.require(req)
180+    except pkg_resources.VersionConflict:
181+        try:
182+            from setuptools.command.easy_install import main
183+        except ImportError:
184+            from easy_install import main
185+        main(list(argv)+[download_setuptools(delay=0)])
186+        sys.exit(0) # try to force an exit
187+    else:
188+        if argv:
189+            from setuptools.command.easy_install import main
190+            main(argv)
191+        else:
192+            print "Setuptools version",version,"or greater has been installed."
193+            print '(Run "ez_setup.py -U setuptools" to reinstall or upgrade.)'
194+
195+
196+
197+def update_md5(filenames):
198+    """Update our built-in md5 registry"""
199+
200+    import re
201+    from md5 import md5
202+
203+    for name in filenames:
204+        base = os.path.basename(name)
205+        f = open(name,'rb')
206+        md5_data[base] = md5(f.read()).hexdigest()
207+        f.close()
208+
209+    data = ["    %r: %r,\n" % it for it in md5_data.items()]
210+    data.sort()
211+    repl = "".join(data)
212+
213+    import inspect
214+    srcfile = inspect.getsourcefile(sys.modules[__name__])
215+    f = open(srcfile, 'rb'); src = f.read(); f.close()
216+
217+    match = re.search("\nmd5_data = {\n([^}]+)}", src)
218+    if not match:
219+        print >>sys.stderr, "Internal error!"
220+        sys.exit(2)
221+
222+    src = src[:match.start(1)] + repl + src[match.end(1):]
223+    f = open(srcfile,'w')
224+    f.write(src)
225+    f.close()
226+
227+
228+if __name__=='__main__':
229+    if len(sys.argv)>2 and sys.argv[1]=='--md5update':
230+        update_md5(sys.argv[2:])
231+    else:
232+        main(sys.argv[1:])
233+
234+
235+
236+
237+