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1 ##############################################################################
2 #
3 # Copyright (c) 2006 Zope Foundation and Contributors.
4 # All Rights Reserved.
5 #
6 # This software is subject to the provisions of the Zope Public License,
7 # Version 2.1 (ZPL). A copy of the ZPL should accompany this distribution.
8 # THIS SOFTWARE IS PROVIDED "AS IS" AND ANY AND ALL EXPRESS OR IMPLIED
9 # WARRANTIES ARE DISCLAIMED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
10 # WARRANTIES OF TITLE, MERCHANTABILITY, AGAINST INFRINGEMENT, AND FITNESS
11 # FOR A PARTICULAR PURPOSE.
12 #
13 ##############################################################################
14 """Bootstrap a buildout-based project
15
16 Simply run this script in a directory containing a buildout.cfg.
17 The script accepts buildout command-line options, so you can
18 use the -c option to specify an alternate configuration file.
19 """
20
21 import os, shutil, sys, tempfile, textwrap, urllib, urllib2, subprocess
22 from optparse import OptionParser
23
24 if sys.platform == 'win32':
25 def quote(c):
26 if ' ' in c:
27 return '"%s"' % c # work around spawn lamosity on windows
28 else:
29 return c
30 else:
31 quote = str
32
33 # See zc.buildout.easy_install._has_broken_dash_S for motivation and comments.
34 stdout, stderr = subprocess.Popen(
35 [sys.executable, '-Sc',
36 'try:\n'
37 ' import ConfigParser\n'
38 'except ImportError:\n'
39 ' print 1\n'
40 'else:\n'
41 ' print 0\n'],
42 stdout=subprocess.PIPE, stderr=subprocess.PIPE).communicate()
43 has_broken_dash_S = bool(int(stdout.strip()))
44
45 # In order to be more robust in the face of system Pythons, we want to
46 # run without site-packages loaded. This is somewhat tricky, in
47 # particular because Python 2.6's distutils imports site, so starting
48 # with the -S flag is not sufficient. However, we'll start with that:
49 if not has_broken_dash_S and 'site' in sys.modules:
50 # We will restart with python -S.
51 args = sys.argv[:]
52 args[0:0] = [sys.executable, '-S']
53 args = map(quote, args)
54 os.execv(sys.executable, args)
55 # Now we are running with -S. We'll get the clean sys.path, import site
56 # because distutils will do it later, and then reset the path and clean
57 # out any namespace packages from site-packages that might have been
58 # loaded by .pth files.
59 clean_path = sys.path[:]
60 import site
61 sys.path[:] = clean_path
62 for k, v in sys.modules.items():
63 if k in ('setuptools', 'pkg_resources') or (
64 hasattr(v, '__path__') and
65 len(v.__path__)==1 and
66 not os.path.exists(os.path.join(v.__path__[0],'__init__.py'))):
67 # This is a namespace package. Remove it.
68 sys.modules.pop(k)
69
70 is_jython = sys.platform.startswith('java')
71
72 setuptools_source = 'http://peak.telecommunity.com/dist/ez_setup.py'
73 distribute_source = 'http://python-distribute.org/distribute_setup.py'
74
75 # parsing arguments
76 def normalize_to_url(option, opt_str, value, parser):
77 if value:
78 if '://' not in value: # It doesn't smell like a URL.
79 value = 'file://%s' % (
80 urllib.pathname2url(
81 os.path.abspath(os.path.expanduser(value))),)
82 if opt_str == '--download-base' and not value.endswith('/'):
83 # Download base needs a trailing slash to make the world happy.
84 value += '/'
85 else:
86 value = None
87 name = opt_str[2:].replace('-', '_')
88 setattr(parser.values, name, value)
89
90 usage = '''\
91 [DESIRED PYTHON FOR BUILDOUT] bootstrap.py [options]
92
93 Bootstraps a buildout-based project.
94
95 Simply run this script in a directory containing a buildout.cfg, using the
96 Python that you want bin/buildout to use.
97
98 Note that by using --setup-source and --download-base to point to
99 local resources, you can keep this script from going over the network.
100 '''
101
102 parser = OptionParser(usage=usage)
103 parser.add_option("-v", "--version", dest="version",
104 help="use a specific zc.buildout version")
105 parser.add_option("-d", "--distribute",
106 action="store_true", dest="use_distribute", default=False,
107 help="Use Distribute rather than Setuptools.")
108 parser.add_option("--setup-source", action="callback", dest="setup_source",
109 callback=normalize_to_url, nargs=1, type="string",
110 help=("Specify a URL or file location for the setup file. "
111 "If you use Setuptools, this will default to " +
112 setuptools_source + "; if you use Distribute, this "
113 "will default to " + distribute_source +"."))
114 parser.add_option("--download-base", action="callback", dest="download_base",
115 callback=normalize_to_url, nargs=1, type="string",
116 help=("Specify a URL or directory for downloading "
117 "zc.buildout and either Setuptools or Distribute. "
118 "Defaults to PyPI."))
119 parser.add_option("--eggs",
120 help=("Specify a directory for storing eggs. Defaults to "
121 "a temporary directory that is deleted when the "
122 "bootstrap script completes."))
123 parser.add_option("-t", "--accept-buildout-test-releases",
124 dest='accept_buildout_test_releases',
125 action="store_true", default=False,
126 help=("Normally, if you do not specify a --version, the "
127 "bootstrap script and buildout gets the newest "
128 "*final* versions of zc.buildout and its recipes and "
129 "extensions for you. If you use this flag, "
130 "bootstrap and buildout will get the newest releases "
131 "even if they are alphas or betas."))
132 parser.add_option("-c", None, action="store", dest="config_file",
133 help=("Specify the path to the buildout configuration "
134 "file to be used."))
135
136 options, args = parser.parse_args()
137
138 # if -c was provided, we push it back into args for buildout's main function
139 if options.config_file is not None:
140 args += ['-c', options.config_file]
141
142 if options.eggs:
143 eggs_dir = os.path.abspath(os.path.expanduser(options.eggs))
144 else:
145 eggs_dir = tempfile.mkdtemp()
146
147 if options.setup_source is None:
148 if options.use_distribute:
149 options.setup_source = distribute_source
150 else:
151 options.setup_source = setuptools_source
152
153 if options.accept_buildout_test_releases:
154 args.append('buildout:accept-buildout-test-releases=true')
155 args.append('bootstrap')
156
157 try:
158 import pkg_resources
159 import setuptools # A flag. Sometimes pkg_resources is installed alone.
160 if not hasattr(pkg_resources, '_distribute'):
161 raise ImportError
162 except ImportError:
163 ez_code = urllib2.urlopen(
164 options.setup_source).read().replace('\r\n', '\n')
165 ez = {}
166 exec ez_code in ez
167 setup_args = dict(to_dir=eggs_dir, download_delay=0)
168 if options.download_base:
169 setup_args['download_base'] = options.download_base
170 if options.use_distribute:
171 setup_args['no_fake'] = True
172 ez['use_setuptools'](**setup_args)
173 if 'pkg_resources' in sys.modules:
174 reload(sys.modules['pkg_resources'])
175 import pkg_resources
176 # This does not (always?) update the default working set. We will
177 # do it.
178 for path in sys.path:
179 if path not in pkg_resources.working_set.entries:
180 pkg_resources.working_set.add_entry(path)
181
182 cmd = [quote(sys.executable),
183 '-c',
184 quote('from setuptools.command.easy_install import main; main()'),
185 '-mqNxd',
186 quote(eggs_dir)]
187
188 if not has_broken_dash_S:
189 cmd.insert(1, '-S')
190
191 find_links = options.download_base
192 if not find_links:
193 find_links = os.environ.get('bootstrap-testing-find-links')
194 if find_links:
195 cmd.extend(['-f', quote(find_links)])
196
197 if options.use_distribute:
198 setup_requirement = 'distribute'
199 else:
200 setup_requirement = 'setuptools'
201 ws = pkg_resources.working_set
202 setup_requirement_path = ws.find(
203 pkg_resources.Requirement.parse(setup_requirement)).location
204 env = dict(
205 os.environ,
206 PYTHONPATH=setup_requirement_path)
207
208 requirement = 'zc.buildout'
209 version = options.version
210 if version is None and not options.accept_buildout_test_releases:
211 # Figure out the most recent final version of zc.buildout.
212 import setuptools.package_index
213 _final_parts = '*final-', '*final'
214 def _final_version(parsed_version):
215 for part in parsed_version:
216 if (part[:1] == '*') and (part not in _final_parts):
217 return False
218 return True
219 index = setuptools.package_index.PackageIndex(
220 search_path=[setup_requirement_path])
221 if find_links:
222 index.add_find_links((find_links,))
223 req = pkg_resources.Requirement.parse(requirement)
224 if index.obtain(req) is not None:
225 best = []
226 bestv = None
227 for dist in index[req.project_name]:
228 distv = dist.parsed_version
229 if _final_version(distv):
230 if bestv is None or distv > bestv:
231 best = [dist]
232 bestv = distv
233 elif distv == bestv:
234 best.append(dist)
235 if best:
236 best.sort()
237 version = best[-1].version
238 if version:
239 requirement = '=='.join((requirement, version))
240 cmd.append(requirement)
241
242 if is_jython:
243 import subprocess
244 exitcode = subprocess.Popen(cmd, env=env).wait()
245 else: # Windows prefers this, apparently; otherwise we would prefer subprocess
246 exitcode = os.spawnle(*([os.P_WAIT, sys.executable] + cmd + [env]))
247 if exitcode != 0:
248 sys.stdout.flush()
249 sys.stderr.flush()
250 print ("An error occurred when trying to install zc.buildout. "
251 "Look above this message for any errors that "
252 "were output by easy_install.")
253 sys.exit(exitcode)
254
255 ws.add_entry(eggs_dir)
256 ws.require(requirement)
257 import zc.buildout.buildout
258 zc.buildout.buildout.main(args)
259 if not options.eggs: # clean up temporary egg directory
260 shutil.rmtree(eggs_dir)
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