def __init__(self, attrs=None):
"""Construct a new Distribution instance: initialize all the
attributes of a Distribution, and then use 'attrs' (a dictionary
mapping attribute names to values) to assign some of those
attributes their "real" values. (Any attributes not mentioned in
'attrs' will be assigned to some null value: 0, None, an empty list
or dictionary, etc.) Most importantly, initialize the
'command_obj' attribute to the empty dictionary; this will be
filled in with real command objects by 'parse_command_line()'.
"""
# Default values for our command-line options
self.dry_run = False
self.help = False
for attr in self.display_option_names:
setattr(self, attr, False)
# Store the configuration
self.config = Config(self)
# Store the distribution metadata (name, version, author, and so
# forth) in a separate object -- we're getting to have enough
# information here (and enough command-line options) that it's
# worth it.
self.metadata = Metadata()
# 'cmdclass' maps command names to class objects, so we
# can 1) quickly figure out which class to instantiate when
# we need to create a new command object, and 2) have a way
# for the setup script to override command classes
self.cmdclass = {}
# 'script_name' and 'script_args' are usually set to sys.argv[0]
# and sys.argv[1:], but they can be overridden when the caller is
# not necessarily a setup script run from the command line.
self.script_name = None
self.script_args = None
# 'command_options' is where we store command options between
# parsing them (from config files, the command line, etc.) and when
# they are actually needed -- ie. when the command in question is
# instantiated. It is a dictionary of dictionaries of 2-tuples:
# command_options = { command_name : { option : (source, value) } }
self.command_options = {}
# 'dist_files' is the list of (command, pyversion, file) that
# have been created by any dist commands run so far. This is
# filled regardless of whether the run is dry or not. pyversion
# gives sysconfig.get_python_version() if the dist file is
# specific to a Python version, 'any' if it is good for all
# Python versions on the target platform, and '' for a source
# file. pyversion should not be used to specify minimum or
# maximum required Python versions; use the metainfo for that
# instead.
self.dist_files = []
# These options are really the business of various commands, rather
# than of the Distribution itself. We provide aliases for them in
# Distribution as a convenience to the developer.
self.packages = []
self.package_data = {}
self.package_dir = None
self.py_modules = []
self.libraries = []
self.headers = []
self.ext_modules = []
self.ext_package = None
self.include_dirs = []
self.extra_path = None
self.scripts = []
self.data_files = {}
self.password = ''
self.use_2to3 = False
self.convert_2to3_doctests = []
self.extra_files = []
# And now initialize bookkeeping stuff that can't be supplied by
# the caller at all. 'command_obj' maps command names to
# Command instances -- that's how we enforce that every command
# class is a singleton.
self.command_obj = {}
# 'have_run' maps command names to boolean values; it keeps track
# of whether we have actually run a particular command, to make it
# cheap to "run" a command whenever we think we might need to -- if
# it's already been done, no need for expensive filesystem
# operations, we just check the 'have_run' dictionary and carry on.
# It's only safe to query 'have_run' for a command class that has
# been instantiated -- a false value will be inserted when the
# command object is created, and replaced with a true value when
# the command is successfully run. Thus it's probably best to use
# '.get()' rather than a straight lookup.
self.have_run = {}
# Now we'll use the attrs dictionary (ultimately, keyword args from
# the setup script) to possibly override any or all of these
# distribution options.
if attrs is not None:
# Pull out the set of command options and work on them
# specifically. Note that this order guarantees that aliased
# command options will override any supplied redundantly
# through the general options dictionary.
options = attrs.get('options')
if options is not None:
del attrs['options']
for command, cmd_options in options.items():
opt_dict = self.get_option_dict(command)
for opt, val in cmd_options.items():
opt_dict[opt] = ("setup script", val)
# Now work on the rest of the attributes. Any attribute that's
# not already defined is invalid!
for key, val in attrs.items():
if self.metadata.is_metadata_field(key):
self.metadata[key] = val
elif hasattr(self, key):
setattr(self, key, val)
else:
logger.warning(
'unknown argument given to Distribution: %r', key)
# no-user-cfg is handled before other command line args
# because other args override the config files, and this
# one is needed before we can load the config files.
# If attrs['script_args'] wasn't passed, assume false.
#
# This also make sure we just look at the global options
self.want_user_cfg = True
if self.script_args is not None:
for arg in self.script_args:
if not arg.startswith('-'):
break
if arg == '--no-user-cfg':
self.want_user_cfg = False
break
self.finalize_options()
