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__all__ = ['Distribution']

from distutils.core import Distribution as _Distribution
from setuptools.depends import Require
from setuptools.command.install import install
from setuptools.command.sdist import sdist
from setuptools.command.install_lib import install_lib
from distutils.errors import DistutilsOptionError, DistutilsPlatformError
from distutils.errors import DistutilsSetupError
import setuptools, pkg_resources, distutils.core, distutils.dist, distutils.cmd
import os, distutils.log

def _get_unpatched(cls):
"""Protect against re-patching the distutils if reloaded

Also ensures that no other distutils extension monkeypatched the distutils
first.
"""
while cls.__module__.startswith('setuptools'):
cls, = cls.__bases__
if not cls.__module__.startswith('distutils'):
raise AssertionError(
"distutils has already been patched by %r" % cls
)
return cls

_Distribution = _get_unpatched(_Distribution)

sequence = tuple, list

def check_importable(dist, attr, value):
try:
ep = pkg_resources.EntryPoint.parse('x='+value)
assert not ep.extras
except (TypeError,ValueError,AttributeError,AssertionError):
raise DistutilsSetupError(
"%r must be importable 'module:attrs' string (got %r)"
% (attr,value)
)


def assert_string_list(dist, attr, value):
"""Verify that value is a string list or None"""
try:
assert ''.join(value)!=value
except (TypeError,ValueError,AttributeError,AssertionError):
raise DistutilsSetupError(
"%r must be a list of strings (got %r)" % (attr,value)
)

def check_nsp(dist, attr, value):
"""Verify that namespace packages are valid"""
assert_string_list(dist,attr,value)
for nsp in value:
if not dist.has_contents_for(nsp):
raise DistutilsSetupError(
"Distribution contains no modules or packages for " +
"namespace package %r" % nsp
)
if '.' in nsp:
parent = '.'.join(nsp.split('.')[:-1])
if parent not in value:
distutils.log.warn(
"%r is declared as a package namespace, but %r is not:"
" please correct this in setup.py", nsp, parent
)

def check_extras(dist, attr, value):
"""Verify that extras_require mapping is valid"""
try:
for k,v in value.items():
list(pkg_resources.parse_requirements(v))
except (TypeError,ValueError,AttributeError):
raise DistutilsSetupError(
"'extras_require' must be a dictionary whose values are "
"strings or lists of strings containing valid project/version "
"requirement specifiers."
)




def assert_bool(dist, attr, value):
"""Verify that value is True, False, 0, or 1"""
if bool(value) != value:
raise DistutilsSetupError(
"%r must be a boolean value (got %r)" % (attr,value)
)
def check_requirements(dist, attr, value):
"""Verify that install_requires is a valid requirements list"""
try:
list(pkg_resources.parse_requirements(value))
except (TypeError,ValueError):
raise DistutilsSetupError(
"%r must be a string or list of strings "
"containing valid project/version requirement specifiers" % (attr,)
)
def check_entry_points(dist, attr, value):
"""Verify that entry_points map is parseable"""
try:
pkg_resources.EntryPoint.parse_map(value)
except ValueError, e:
raise DistutilsSetupError(e)

def check_test_suite(dist, attr, value):
if not isinstance(value,basestring):
raise DistutilsSetupError("test_suite must be a string")

def check_package_data(dist, attr, value):
"""Verify that value is a dictionary of package names to glob lists"""
if isinstance(value,dict):
for k,v in value.items():
if not isinstance(k,str): break
try: iter(v)
except TypeError:
break
else:
return
raise DistutilsSetupError(
attr+" must be a dictionary mapping package names to lists of "
"wildcard patterns"
)

class Distribution(_Distribution):
"""Distribution with support for features, tests, and package data

This is an enhanced version of 'distutils.dist.Distribution' that
effectively adds the following new optional keyword arguments to 'setup()':

'install_requires' -- a string or sequence of strings specifying project
versions that the distribution requires when installed, in the format
used by 'pkg_resources.require()'. They will be installed
automatically when the package is installed. If you wish to use
packages that are not available in PyPI, or want to give your users an
alternate download location, you can add a 'find_links' option to the
'[easy_install]' section of your project's 'setup.cfg' file, and then
setuptools will scan the listed web pages for links that satisfy the
requirements.

'extras_require' -- a dictionary mapping names of optional "extras" to the
additional requirement(s) that using those extras incurs. For example,
this::

extras_require = dict(reST = ["docutils>=0.3", "reSTedit"])

indicates that the distribution can optionally provide an extra
capability called "reST", but it can only be used if docutils and
reSTedit are installed. If the user installs your package using
EasyInstall and requests one of your extras, the corresponding
additional requirements will be installed if needed.

'features' -- a dictionary mapping option names to 'setuptools.Feature'
objects. Features are a portion of the distribution that can be
included or excluded based on user options, inter-feature dependencies,
and availability on the current system. Excluded features are omitted
from all setup commands, including source and binary distributions, so
you can create multiple distributions from the same source tree.
Feature names should be valid Python identifiers, except that they may
contain the '-' (minus) sign. Features can be included or excluded
via the command line options '--with-X' and '--without-X', where 'X' is
the name of the feature. Whether a feature is included by default, and
whether you are allowed to control this from the command line, is
determined by the Feature object. See the 'Feature' class for more
information.

'test_suite' -- the name of a test suite to run for the 'test' command.
If the user runs 'python setup.py test', the package will be installed,
and the named test suite will be run. The format is the same as
would be used on a 'unittest.py' command line. That is, it is the
dotted name of an object to import and call to generate a test suite.

'package_data' -- a dictionary mapping package names to lists of filenames
or globs to use to find data files contained in the named packages.
If the dictionary has filenames or globs listed under '""' (the empty
string), those names will be searched for in every package, in addition
to any names for the specific package. Data files found using these
names/globs will be installed along with the package, in the same
location as the package. Note that globs are allowed to reference
the contents of non-package subdirectories, as long as you use '/' as
a path separator. (Globs are automatically converted to
platform-specific paths at runtime.)

In addition to these new keywords, this class also has several new methods
for manipulating the distribution's contents. For example, the 'include()'
and 'exclude()' methods can be thought of as in-place add and subtract
commands that add or remove packages, modules, extensions, and so on from
the distribution. They are used by the feature subsystem to configure the
distribution for the included and excluded features.
"""

_patched_dist = None

def patch_missing_pkg_info(self, attrs):
# Fake up a replacement for the data that would normally come from
# PKG-INFO, but which might not yet be built if this is a fresh
# checkout.
#
if not attrs or 'name' not in attrs or 'version' not in attrs:
return
key = pkg_resources.safe_name(str(attrs['name'])).lower()
dist = pkg_resources.working_set.by_key.get(key)
if dist is not None and not dist.has_metadata('PKG-INFO'):
dist._version = pkg_resources.safe_version(str(attrs['version']))
self._patched_dist = dist

def __init__ (self, attrs=None):
have_package_data = hasattr(self, "package_data")
if not have_package_data:
self.package_data = {}
self.require_features = []
self.features = {}
self.dist_files = []
self.patch_missing_pkg_info(attrs)
# Make sure we have any eggs needed to interpret 'attrs'
if attrs is not None:
self.dependency_links = attrs.pop('dependency_links', [])
assert_string_list(self,'dependency_links',self.dependency_links)
if attrs and 'setup_requires' in attrs:
self.fetch_build_eggs(attrs.pop('setup_requires'))
for ep in pkg_resources.iter_entry_points('distutils.setup_keywords'):
if not hasattr(self,ep.name):
setattr(self,ep.name,None)
_Distribution.__init__(self,attrs)
if isinstance(self.metadata.version, (int,long,float)):
# Some people apparently take "version number" too literally :)
self.metadata.version = str(self.metadata.version)

def parse_command_line(self):
"""Process features after parsing command line options"""
result = _Distribution.parse_command_line(self)
if self.features:
self._finalize_features()
return result

def _feature_attrname(self,name):
"""Convert feature name to corresponding option attribute name"""
return 'with_'+name.replace('-','_')

def fetch_build_eggs(self, requires):
"""Resolve pre-setup requirements"""
from pkg_resources import working_set, parse_requirements
for dist in working_set.resolve(
parse_requirements(requires), installer=self.fetch_build_egg
):
working_set.add(dist)

def finalize_options(self):
_Distribution.finalize_options(self)
if self.features:
self._set_global_opts_from_features()

for ep in pkg_resources.iter_entry_points('distutils.setup_keywords'):
value = getattr(self,ep.name,None)
if value is not None:
ep.require(installer=self.fetch_build_egg)
ep.load()(self, ep.name, value)

def fetch_build_egg(self, req):
"""Fetch an egg needed for building"""
try:
cmd = self._egg_fetcher
except AttributeError:
from setuptools.command.easy_install import easy_install
dist = self.__class__({'script_args':['easy_install']})
dist.parse_config_files()
opts = dist.get_option_dict('easy_install')
keep = (
'find_links', 'site_dirs', 'index_url', 'optimize',
'site_dirs', 'allow_hosts'
)
for key in opts.keys():
if key not in keep:
del opts[key] # don't use any other settings
if self.dependency_links:
links = self.dependency_links[:]
if 'find_links' in opts:
links = opts['find_links'][1].split() + links
opts['find_links'] = ('setup', links)
cmd = easy_install(
dist, args=["x"], install_dir=os.curdir, exclude_scripts=True,
always_copy=False, build_directory=None, editable=False,
upgrade=False, multi_version=True, no_report = True
)
cmd.ensure_finalized()
self._egg_fetcher = cmd
return cmd.easy_install(req)

def _set_global_opts_from_features(self):
"""Add --with-X/--without-X options based on optional features"""

go = []
no = self.negative_opt.copy()

for name,feature in self.features.items():
self._set_feature(name,None)
feature.validate(self)

if feature.optional:
descr = feature.description
incdef = ' (default)'
excdef=''
if not feature.include_by_default():
excdef, incdef = incdef, excdef

go.append(('with-'+name, None, 'include '+descr+incdef))
go.append(('without-'+name, None, 'exclude '+descr+excdef))
no['without-'+name] = 'with-'+name

self.global_options = self.feature_options = go + self.global_options
self.negative_opt = self.feature_negopt = no


















def _finalize_features(self):
"""Add/remove features and resolve dependencies between them"""

# First, flag all the enabled items (and thus their dependencies)
for name,feature in self.features.items():
enabled = self.feature_is_included(name)
if enabled or (enabled is None and feature.include_by_default()):
feature.include_in(self)
self._set_feature(name,1)

# Then disable the rest, so that off-by-default features don't
# get flagged as errors when they're required by an enabled feature
for name,feature in self.features.items():
if not self.feature_is_included(name):
feature.exclude_from(self)
self._set_feature(name,0)


def get_command_class(self, command):
"""Pluggable version of get_command_class()"""
if command in self.cmdclass:
return self.cmdclass[command]

for ep in pkg_resources.iter_entry_points('distutils.commands',command):
ep.require(installer=self.fetch_build_egg)
self.cmdclass[command] = cmdclass = ep.load()
return cmdclass
else:
return _Distribution.get_command_class(self, command)

def print_commands(self):
for ep in pkg_resources.iter_entry_points('distutils.commands'):
if ep.name not in self.cmdclass:
cmdclass = ep.load(False) # don't require extras, we're not running
self.cmdclass[ep.name] = cmdclass
return _Distribution.print_commands(self)





def _set_feature(self,name,status):
"""Set feature's inclusion status"""
setattr(self,self._feature_attrname(name),status)

def feature_is_included(self,name):
"""Return 1 if feature is included, 0 if excluded, 'None' if unknown"""
return getattr(self,self._feature_attrname(name))

def include_feature(self,name):
"""Request inclusion of feature named 'name'"""

if self.feature_is_included(name)==0:
descr = self.features[name].description
raise DistutilsOptionError(
descr + " is required, but was excluded or is not available"
)
self.features[name].include_in(self)
self._set_feature(name,1)

def include(self,**attrs):
"""Add items to distribution that are named in keyword arguments

For example, 'dist.exclude(py_modules=["x"])' would add 'x' to
the distribution's 'py_modules' attribute, if it was not already
there.

Currently, this method only supports inclusion for attributes that are
lists or tuples. If you need to add support for adding to other
attributes in this or a subclass, you can add an '_include_X' method,
where 'X' is the name of the attribute. The method will be called with
the value passed to 'include()'. So, 'dist.include(foo={"bar":"baz"})'
will try to call 'dist._include_foo({"bar":"baz"})', which can then
handle whatever special inclusion logic is needed.
"""
for k,v in attrs.items():
include = getattr(self, '_include_'+k, None)
if include:
include(v)
else:
self._include_misc(k,v)

def exclude_package(self,package):
"""Remove packages, modules, and extensions in named package"""

pfx = package+'.'
if self.packages:
self.packages = [
p for p in self.packages
if p<>package and not p.startswith(pfx)
]

if self.py_modules:
self.py_modules = [
p for p in self.py_modules
if p<>package and not p.startswith(pfx)
]

if self.ext_modules:
self.ext_modules = [
p for p in self.ext_modules
if p.name<>package and not p.name.startswith(pfx)
]


def has_contents_for(self,package):
"""Return true if 'exclude_package(package)' would do something"""

pfx = package+'.'

for p in self.iter_distribution_names():
if p==package or p.startswith(pfx):
return True










def _exclude_misc(self,name,value):
"""Handle 'exclude()' for list/tuple attrs without a special handler"""
if not isinstance(value,sequence):
raise DistutilsSetupError(
"%s: setting must be a list or tuple (%r)" % (name, value)
)
try:
old = getattr(self,name)
except AttributeError:
raise DistutilsSetupError(
"%s: No such distribution setting" % name
)
if old is not None and not isinstance(old,sequence):
raise DistutilsSetupError(
name+": this setting cannot be changed via include/exclude"
)
elif old:
setattr(self,name,[item for item in old if item not in value])

def _include_misc(self,name,value):
"""Handle 'include()' for list/tuple attrs without a special handler"""

if not isinstance(value,sequence):
raise DistutilsSetupError(
"%s: setting must be a list (%r)" % (name, value)
)
try:
old = getattr(self,name)
except AttributeError:
raise DistutilsSetupError(
"%s: No such distribution setting" % name
)
if old is None:
setattr(self,name,value)
elif not isinstance(old,sequence):
raise DistutilsSetupError(
name+": this setting cannot be changed via include/exclude"
)
else:
setattr(self,name,old+[item for item in value if item not in old])

def exclude(self,**attrs):
"""Remove items from distribution that are named in keyword arguments

For example, 'dist.exclude(py_modules=["x"])' would remove 'x' from
the distribution's 'py_modules' attribute. Excluding packages uses
the 'exclude_package()' method, so all of the package's contained
packages, modules, and extensions are also excluded.

Currently, this method only supports exclusion from attributes that are
lists or tuples. If you need to add support for excluding from other
attributes in this or a subclass, you can add an '_exclude_X' method,
where 'X' is the name of the attribute. The method will be called with
the value passed to 'exclude()'. So, 'dist.exclude(foo={"bar":"baz"})'
will try to call 'dist._exclude_foo({"bar":"baz"})', which can then
handle whatever special exclusion logic is needed.
"""
for k,v in attrs.items():
exclude = getattr(self, '_exclude_'+k, None)
if exclude:
exclude(v)
else:
self._exclude_misc(k,v)

def _exclude_packages(self,packages):
if not isinstance(packages,sequence):
raise DistutilsSetupError(
"packages: setting must be a list or tuple (%r)" % (packages,)
)
map(self.exclude_package, packages)












def _parse_command_opts(self, parser, args):
# Remove --with-X/--without-X options when processing command args
self.global_options = self.__class__.global_options
self.negative_opt = self.__class__.negative_opt

# First, expand any aliases
command = args[0]
aliases = self.get_option_dict('aliases')
while command in aliases:
src,alias = aliases[command]
del aliases[command] # ensure each alias can expand only once!
import shlex
args[:1] = shlex.split(alias,True)
command = args[0]

nargs = _Distribution._parse_command_opts(self, parser, args)

# Handle commands that want to consume all remaining arguments
cmd_class = self.get_command_class(command)
if getattr(cmd_class,'command_consumes_arguments',None):
self.get_option_dict(command)['args'] = ("command line", nargs)
if nargs is not None:
return []

return nargs
















def get_cmdline_options(self):
"""Return a '{cmd: {opt:val}}' map of all command-line options

Option names are all long, but do not include the leading '--', and
contain dashes rather than underscores. If the option doesn't take
an argument (e.g. '--quiet'), the 'val' is 'None'.

Note that options provided by config files are intentionally excluded.
"""

d = {}

for cmd,opts in self.command_options.items():

for opt,(src,val) in opts.items():

if src != "command line":
continue

opt = opt.replace('_','-')

if val==0:
cmdobj = self.get_command_obj(cmd)
neg_opt = self.negative_opt.copy()
neg_opt.update(getattr(cmdobj,'negative_opt',{}))
for neg,pos in neg_opt.items():
if pos==opt:
opt=neg
val=None
break
else:
raise AssertionError("Shouldn't be able to get here")

elif val==1:
val = None

d.setdefault(cmd,{})[opt] = val

return d


def iter_distribution_names(self):
"""Yield all packages, modules, and extension names in distribution"""

for pkg in self.packages or ():
yield pkg

for module in self.py_modules or ():
yield module

for ext in self.ext_modules or ():
if isinstance(ext,tuple):
name, buildinfo = ext
else:
name = ext.name
if name.endswith('module'):
name = name[:-6]
yield name

# Install it throughout the distutils
for module in distutils.dist, distutils.core, distutils.cmd:
module.Distribution = Distribution




















class Feature:
"""A subset of the distribution that can be excluded if unneeded/wanted

Features are created using these keyword arguments:

'description' -- a short, human readable description of the feature, to
be used in error messages, and option help messages.

'standard' -- if true, the feature is included by default if it is
available on the current system. Otherwise, the feature is only
included if requested via a command line '--with-X' option, or if
another included feature requires it. The default setting is 'False'.

'available' -- if true, the feature is available for installation on the
current system. The default setting is 'True'.

'optional' -- if true, the feature's inclusion can be controlled from the
command line, using the '--with-X' or '--without-X' options. If
false, the feature's inclusion status is determined automatically,
based on 'availabile', 'standard', and whether any other feature
requires it. The default setting is 'True'.

'require_features' -- a string or sequence of strings naming features
that should also be included if this feature is included. Defaults to
empty list. May also contain 'Require' objects that should be
added/removed from the distribution.

'remove' -- a string or list of strings naming packages to be removed
from the distribution if this feature is *not* included. If the
feature *is* included, this argument is ignored. This argument exists
to support removing features that "crosscut" a distribution, such as
defining a 'tests' feature that removes all the 'tests' subpackages
provided by other features. The default for this argument is an empty
list. (Note: the named package(s) or modules must exist in the base
distribution when the 'setup()' function is initially called.)

other keywords -- any other keyword arguments are saved, and passed to
the distribution's 'include()' and 'exclude()' methods when the
feature is included or excluded, respectively. So, for example, you
could pass 'packages=["a","b"]' to cause packages 'a' and 'b' to be
added or removed from the distribution as appropriate.

A feature must include at least one 'requires', 'remove', or other
keyword argument. Otherwise, it can't affect the distribution in any way.
Note also that you can subclass 'Feature' to create your own specialized
feature types that modify the distribution in other ways when included or
excluded. See the docstrings for the various methods here for more detail.
Aside from the methods, the only feature attributes that distributions look
at are 'description' and 'optional'.
"""
def __init__(self, description, standard=False, available=True,
optional=True, require_features=(), remove=(), **extras
):

self.description = description
self.standard = standard
self.available = available
self.optional = optional
if isinstance(require_features,(str,Require)):
require_features = require_features,

self.require_features = [
r for r in require_features if isinstance(r,str)
]
er = [r for r in require_features if not isinstance(r,str)]
if er: extras['require_features'] = er

if isinstance(remove,str):
remove = remove,
self.remove = remove
self.extras = extras

if not remove and not require_features and not extras:
raise DistutilsSetupError(
"Feature %s: must define 'require_features', 'remove', or at least one"
" of 'packages', 'py_modules', etc."
)

def include_by_default(self):
"""Should this feature be included by default?"""
return self.available and self.standard

def include_in(self,dist):

"""Ensure feature and its requirements are included in distribution

You may override this in a subclass to perform additional operations on
the distribution. Note that this method may be called more than once
per feature, and so should be idempotent.

"""

if not self.available:
raise DistutilsPlatformError(
self.description+" is required,"
"but is not available on this platform"
)

dist.include(**self.extras)

for f in self.require_features:
dist.include_feature(f)



def exclude_from(self,dist):

"""Ensure feature is excluded from distribution

You may override this in a subclass to perform additional operations on
the distribution. This method will be called at most once per
feature, and only after all included features have been asked to
include themselves.
"""

dist.exclude(**self.extras)

if self.remove:
for item in self.remove:
dist.exclude_package(item)



def validate(self,dist):

"""Verify that feature makes sense in context of distribution

This method is called by the distribution just before it parses its
command line. It checks to ensure that the 'remove' attribute, if any,
contains only valid package/module names that are present in the base
distribution when 'setup()' is called. You may override it in a
subclass to perform any other required validation of the feature
against a target distribution.
"""

for item in self.remove:
if not dist.has_contents_for(item):
raise DistutilsSetupError(
"%s wants to be able to remove %s, but the distribution"
" doesn't contain any packages or modules under %s"
% (self.description, item, item)
)






















Change log

r677 by collinw on Jun 27, 2009   Diff
Add setuptools 0.6c9 to the test suite.
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