mirror of https://github.com/python/cpython
568 lines
22 KiB
Python
568 lines
22 KiB
Python
"""distutils.dist
|
|
|
|
Provides the Distribution class, which represents the module distribution
|
|
being built/installed/distributed."""
|
|
|
|
# created 2000/04/03, Greg Ward
|
|
# (extricated from core.py; actually dates back to the beginning)
|
|
|
|
__revision__ = "$Id$"
|
|
|
|
import sys, string, re
|
|
from types import *
|
|
from copy import copy
|
|
from distutils.errors import *
|
|
from distutils.fancy_getopt import fancy_getopt, print_help
|
|
|
|
|
|
# Regex to define acceptable Distutils command names. This is not *quite*
|
|
# the same as a Python NAME -- I don't allow leading underscores. The fact
|
|
# that they're very similar is no coincidence; the default naming scheme is
|
|
# to look for a Python module named after the command.
|
|
command_re = re.compile (r'^[a-zA-Z]([a-zA-Z0-9_]*)$')
|
|
|
|
|
|
class Distribution:
|
|
"""The core of the Distutils. Most of the work hiding behind
|
|
'setup' is really done within a Distribution instance, which
|
|
farms the work out to the Distutils commands specified on the
|
|
command line.
|
|
|
|
Clients will almost never instantiate Distribution directly,
|
|
unless the 'setup' function is totally inadequate to their needs.
|
|
However, it is conceivable that a client might wish to subclass
|
|
Distribution for some specialized purpose, and then pass the
|
|
subclass to 'setup' as the 'distclass' keyword argument. If so,
|
|
it is necessary to respect the expectations that 'setup' has of
|
|
Distribution: it must have a constructor and methods
|
|
'parse_command_line()' and 'run_commands()' with signatures like
|
|
those described below."""
|
|
|
|
|
|
# 'global_options' describes the command-line options that may be
|
|
# supplied to the client (setup.py) prior to any actual commands.
|
|
# Eg. "./setup.py -nv" or "./setup.py --verbose" both take advantage of
|
|
# these global options. This list should be kept to a bare minimum,
|
|
# since every global option is also valid as a command option -- and we
|
|
# don't want to pollute the commands with too many options that they
|
|
# have minimal control over.
|
|
global_options = [('verbose', 'v',
|
|
"run verbosely (default)"),
|
|
('quiet', 'q',
|
|
"run quietly (turns verbosity off)"),
|
|
('dry-run', 'n',
|
|
"don't actually do anything"),
|
|
('force', 'f',
|
|
"skip dependency checking between files"),
|
|
('help', 'h',
|
|
"show this help message"),
|
|
]
|
|
negative_opt = {'quiet': 'verbose'}
|
|
|
|
|
|
# -- Creation/initialization methods -------------------------------
|
|
|
|
def __init__ (self, attrs=None):
|
|
"""Construct a new Distribution instance: initialize all the
|
|
attributes of a Distribution, and then uses '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.verbose = 1
|
|
self.dry_run = 0
|
|
self.force = 0
|
|
self.help = 0
|
|
self.help_commands = 0
|
|
|
|
# And the "distribution meta-data" options -- these can only
|
|
# come from setup.py (the caller), not the command line
|
|
# (or a hypothetical config file).
|
|
self.name = None
|
|
self.version = None
|
|
self.author = None
|
|
self.author_email = None
|
|
self.maintainer = None
|
|
self.maintainer_email = None
|
|
self.url = None
|
|
self.licence = None
|
|
self.description = None
|
|
|
|
# '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 client to override command classes
|
|
self.cmdclass = {}
|
|
|
|
# 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.
|
|
# dictionary.
|
|
self.packages = None
|
|
self.package_dir = None
|
|
self.py_modules = None
|
|
self.libraries = None
|
|
self.ext_modules = None
|
|
self.ext_package = None
|
|
self.include_dirs = None
|
|
self.extra_path = None
|
|
|
|
# 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 succesfully 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 client) to possibly override any or all of these distribution
|
|
# options.
|
|
if attrs:
|
|
|
|
# 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:
|
|
del attrs['options']
|
|
for (command, cmd_options) in options.items():
|
|
cmd_obj = self.find_command_obj (command)
|
|
for (key, val) in cmd_options.items():
|
|
cmd_obj.set_option (key, val)
|
|
# loop over commands
|
|
# if any command options
|
|
|
|
# Now work on the rest of the attributes. Any attribute that's
|
|
# not already defined is invalid!
|
|
for (key,val) in attrs.items():
|
|
if hasattr (self, key):
|
|
setattr (self, key, val)
|
|
else:
|
|
raise DistutilsOptionError, \
|
|
"invalid distribution option '%s'" % key
|
|
|
|
# __init__ ()
|
|
|
|
|
|
def parse_command_line (self, args):
|
|
"""Parse the setup script's command line: set any Distribution
|
|
attributes tied to command-line options, create all command
|
|
objects, and set their options from the command-line. 'args'
|
|
must be a list of command-line arguments, most likely
|
|
'sys.argv[1:]' (see the 'setup()' function). This list is first
|
|
processed for "global options" -- options that set attributes of
|
|
the Distribution instance. Then, it is alternately scanned for
|
|
Distutils command and options for that command. Each new
|
|
command terminates the options for the previous command. The
|
|
allowed options for a command are determined by the 'options'
|
|
attribute of the command object -- thus, we instantiate (and
|
|
cache) every command object here, in order to access its
|
|
'options' attribute. Any error in that 'options' attribute
|
|
raises DistutilsGetoptError; any error on the command-line
|
|
raises DistutilsArgError. If no Distutils commands were found
|
|
on the command line, raises DistutilsArgError. Return true if
|
|
command-line successfully parsed and we should carry on with
|
|
executing commands; false if no errors but we shouldn't execute
|
|
commands (currently, this only happens if user asks for
|
|
help)."""
|
|
|
|
# late import because of mutual dependence between these modules
|
|
from distutils.cmd import Command
|
|
from distutils.core import usage
|
|
|
|
# We have to parse the command line a bit at a time -- global
|
|
# options, then the first command, then its options, and so on --
|
|
# because each command will be handled by a different class, and
|
|
# the options that are valid for a particular class aren't
|
|
# known until we instantiate the command class, which doesn't
|
|
# happen until we know what the command is.
|
|
|
|
self.commands = []
|
|
options = self.global_options + \
|
|
[('help-commands', None,
|
|
"list all available commands")]
|
|
args = fancy_getopt (options, self.negative_opt,
|
|
self, sys.argv[1:])
|
|
|
|
# User just wants a list of commands -- we'll print it out and stop
|
|
# processing now (ie. if they ran "setup --help-commands foo bar",
|
|
# we ignore "foo bar").
|
|
if self.help_commands:
|
|
self.print_commands ()
|
|
print
|
|
print usage
|
|
return
|
|
|
|
while args:
|
|
# Pull the current command from the head of the command line
|
|
command = args[0]
|
|
if not command_re.match (command):
|
|
raise SystemExit, "invalid command name '%s'" % command
|
|
self.commands.append (command)
|
|
|
|
# Make sure we have a command object to put the options into
|
|
# (this either pulls it out of a cache of command objects,
|
|
# or finds and instantiates the command class).
|
|
try:
|
|
cmd_obj = self.find_command_obj (command)
|
|
except DistutilsModuleError, msg:
|
|
raise DistutilsArgError, msg
|
|
|
|
# Require that the command class be derived from Command --
|
|
# that way, we can be sure that we at least have the 'run'
|
|
# and 'get_option' methods.
|
|
if not isinstance (cmd_obj, Command):
|
|
raise DistutilsClassError, \
|
|
"command class %s must subclass Command" % \
|
|
cmd_obj.__class__
|
|
|
|
# Also make sure that the command object provides a list of its
|
|
# known options
|
|
if not (hasattr (cmd_obj, 'user_options') and
|
|
type (cmd_obj.user_options) is ListType):
|
|
raise DistutilsClassError, \
|
|
("command class %s must provide " +
|
|
"'user_options' attribute (a list of tuples)") % \
|
|
cmd_obj.__class__
|
|
|
|
# Poof! like magic, all commands support the global
|
|
# options too, just by adding in 'global_options'.
|
|
negative_opt = self.negative_opt
|
|
if hasattr (cmd_obj, 'negative_opt'):
|
|
negative_opt = copy (negative_opt)
|
|
negative_opt.update (cmd_obj.negative_opt)
|
|
|
|
options = self.global_options + cmd_obj.user_options
|
|
args = fancy_getopt (options, negative_opt,
|
|
cmd_obj, args[1:])
|
|
if cmd_obj.help:
|
|
print_help (self.global_options,
|
|
header="Global options:")
|
|
print
|
|
print_help (cmd_obj.user_options,
|
|
header="Options for '%s' command:" % command)
|
|
print
|
|
print usage
|
|
return
|
|
|
|
self.command_obj[command] = cmd_obj
|
|
self.have_run[command] = 0
|
|
|
|
# while args
|
|
|
|
# If the user wants help -- ie. they gave the "--help" option --
|
|
# give it to 'em. We do this *after* processing the commands in
|
|
# case they want help on any particular command, eg.
|
|
# "setup.py --help foo". (This isn't the documented way to
|
|
# get help on a command, but I support it because that's how
|
|
# CVS does it -- might as well be consistent.)
|
|
if self.help:
|
|
print_help (self.global_options, header="Global options:")
|
|
print
|
|
|
|
for command in self.commands:
|
|
klass = self.find_command_class (command)
|
|
print_help (klass.user_options,
|
|
header="Options for '%s' command:" % command)
|
|
print
|
|
|
|
print usage
|
|
return
|
|
|
|
# Oops, no commands found -- an end-user error
|
|
if not self.commands:
|
|
raise DistutilsArgError, "no commands supplied"
|
|
|
|
# All is well: return true
|
|
return 1
|
|
|
|
# parse_command_line()
|
|
|
|
|
|
def print_command_list (self, commands, header, max_length):
|
|
"""Print a subset of the list of all commands -- used by
|
|
'print_commands()'."""
|
|
|
|
print header + ":"
|
|
|
|
for cmd in commands:
|
|
klass = self.cmdclass.get (cmd)
|
|
if not klass:
|
|
klass = self.find_command_class (cmd)
|
|
try:
|
|
description = klass.description
|
|
except AttributeError:
|
|
description = "(no description available)"
|
|
|
|
print " %-*s %s" % (max_length, cmd, description)
|
|
|
|
# print_command_list ()
|
|
|
|
|
|
def print_commands (self):
|
|
"""Print out a help message listing all available commands with
|
|
a description of each. The list is divided into "standard
|
|
commands" (listed in distutils.command.__all__) and "extra
|
|
commands" (mentioned in self.cmdclass, but not a standard
|
|
command). The descriptions come from the command class
|
|
attribute 'description'."""
|
|
|
|
import distutils.command
|
|
std_commands = distutils.command.__all__
|
|
is_std = {}
|
|
for cmd in std_commands:
|
|
is_std[cmd] = 1
|
|
|
|
extra_commands = []
|
|
for cmd in self.cmdclass.keys():
|
|
if not is_std.get(cmd):
|
|
extra_commands.append (cmd)
|
|
|
|
max_length = 0
|
|
for cmd in (std_commands + extra_commands):
|
|
if len (cmd) > max_length:
|
|
max_length = len (cmd)
|
|
|
|
self.print_command_list (std_commands,
|
|
"Standard commands",
|
|
max_length)
|
|
if extra_commands:
|
|
print
|
|
self.print_command_list (extra_commands,
|
|
"Extra commands",
|
|
max_length)
|
|
|
|
# print_commands ()
|
|
|
|
|
|
|
|
# -- Command class/object methods ----------------------------------
|
|
|
|
# This is a method just so it can be overridden if desired; it doesn't
|
|
# actually use or change any attributes of the Distribution instance.
|
|
def find_command_class (self, command):
|
|
"""Given a command, derives the names of the module and class
|
|
expected to implement the command: eg. 'foo_bar' becomes
|
|
'distutils.command.foo_bar' (the module) and 'FooBar' (the
|
|
class within that module). Loads the module, extracts the
|
|
class from it, and returns the class object.
|
|
|
|
Raises DistutilsModuleError with a semi-user-targeted error
|
|
message if the expected module could not be loaded, or the
|
|
expected class was not found in it."""
|
|
|
|
module_name = 'distutils.command.' + command
|
|
klass_name = command
|
|
|
|
try:
|
|
__import__ (module_name)
|
|
module = sys.modules[module_name]
|
|
except ImportError:
|
|
raise DistutilsModuleError, \
|
|
"invalid command '%s' (no module named '%s')" % \
|
|
(command, module_name)
|
|
|
|
try:
|
|
klass = vars(module)[klass_name]
|
|
except KeyError:
|
|
raise DistutilsModuleError, \
|
|
"invalid command '%s' (no class '%s' in module '%s')" \
|
|
% (command, klass_name, module_name)
|
|
|
|
return klass
|
|
|
|
# find_command_class ()
|
|
|
|
|
|
def create_command_obj (self, command):
|
|
"""Figure out the class that should implement a command,
|
|
instantiate it, cache and return the new "command object".
|
|
The "command class" is determined either by looking it up in
|
|
the 'cmdclass' attribute (this is the mechanism whereby
|
|
clients may override default Distutils commands or add their
|
|
own), or by calling the 'find_command_class()' method (if the
|
|
command name is not in 'cmdclass'."""
|
|
|
|
# Determine the command class -- either it's in the command_class
|
|
# dictionary, or we have to divine the module and class name
|
|
klass = self.cmdclass.get(command)
|
|
if not klass:
|
|
klass = self.find_command_class (command)
|
|
self.cmdclass[command] = klass
|
|
|
|
# Found the class OK -- instantiate it
|
|
cmd_obj = klass (self)
|
|
return cmd_obj
|
|
|
|
|
|
def find_command_obj (self, command, create=1):
|
|
"""Look up and return a command object in the cache maintained by
|
|
'create_command_obj()'. If none found, the action taken
|
|
depends on 'create': if true (the default), create a new
|
|
command object by calling 'create_command_obj()' and return
|
|
it; otherwise, return None. If 'command' is an invalid
|
|
command name, then DistutilsModuleError will be raised."""
|
|
|
|
cmd_obj = self.command_obj.get (command)
|
|
if not cmd_obj and create:
|
|
cmd_obj = self.create_command_obj (command)
|
|
self.command_obj[command] = cmd_obj
|
|
|
|
return cmd_obj
|
|
|
|
|
|
# -- Methods that operate on the Distribution ----------------------
|
|
|
|
def announce (self, msg, level=1):
|
|
"""Print 'msg' if 'level' is greater than or equal to the verbosity
|
|
level recorded in the 'verbose' attribute (which, currently,
|
|
can be only 0 or 1)."""
|
|
|
|
if self.verbose >= level:
|
|
print msg
|
|
|
|
|
|
def run_commands (self):
|
|
"""Run each command that was seen on the client command line.
|
|
Uses the list of commands found and cache of command objects
|
|
created by 'create_command_obj()'."""
|
|
|
|
for cmd in self.commands:
|
|
self.run_command (cmd)
|
|
|
|
|
|
def get_option (self, option):
|
|
"""Return the value of a distribution option. Raise
|
|
DistutilsOptionError if 'option' is not known."""
|
|
|
|
try:
|
|
return getattr (self, opt)
|
|
except AttributeError:
|
|
raise DistutilsOptionError, \
|
|
"unknown distribution option %s" % option
|
|
|
|
|
|
def get_options (self, *options):
|
|
"""Return (as a tuple) the values of several distribution
|
|
options. Raise DistutilsOptionError if any element of
|
|
'options' is not known."""
|
|
|
|
values = []
|
|
try:
|
|
for opt in options:
|
|
values.append (getattr (self, opt))
|
|
except AttributeError, name:
|
|
raise DistutilsOptionError, \
|
|
"unknown distribution option %s" % name
|
|
|
|
return tuple (values)
|
|
|
|
|
|
# -- Methods that operate on its Commands --------------------------
|
|
|
|
def run_command (self, command):
|
|
|
|
"""Do whatever it takes to run a command (including nothing at all,
|
|
if the command has already been run). Specifically: if we have
|
|
already created and run the command named by 'command', return
|
|
silently without doing anything. If the command named by
|
|
'command' doesn't even have a command object yet, create one.
|
|
Then invoke 'run()' on that command object (or an existing
|
|
one)."""
|
|
|
|
# Already been here, done that? then return silently.
|
|
if self.have_run.get (command):
|
|
return
|
|
|
|
self.announce ("running " + command)
|
|
cmd_obj = self.find_command_obj (command)
|
|
cmd_obj.ensure_ready ()
|
|
cmd_obj.run ()
|
|
self.have_run[command] = 1
|
|
|
|
|
|
def get_command_option (self, command, option):
|
|
"""Create a command object for 'command' if necessary, ensure that
|
|
its option values are all set to their final values, and return
|
|
the value of its 'option' option. Raise DistutilsOptionError if
|
|
'option' is not known for that 'command'."""
|
|
|
|
cmd_obj = self.find_command_obj (command)
|
|
cmd_obj.ensure_ready ()
|
|
return cmd_obj.get_option (option)
|
|
try:
|
|
return getattr (cmd_obj, option)
|
|
except AttributeError:
|
|
raise DistutilsOptionError, \
|
|
"command %s: no such option %s" % (command, option)
|
|
|
|
|
|
def get_command_options (self, command, *options):
|
|
"""Create a command object for 'command' if necessary, ensure that
|
|
its option values are all set to their final values, and return
|
|
a tuple containing the values of all the options listed in
|
|
'options' for that command. Raise DistutilsOptionError if any
|
|
invalid option is supplied in 'options'."""
|
|
|
|
cmd_obj = self.find_command_obj (command)
|
|
cmd_obj.ensure_ready ()
|
|
values = []
|
|
try:
|
|
for opt in options:
|
|
values.append (getattr (cmd_obj, option))
|
|
except AttributeError, name:
|
|
raise DistutilsOptionError, \
|
|
"command %s: no such option %s" % (command, name)
|
|
|
|
return tuple (values)
|
|
|
|
|
|
# -- Distribution query methods ------------------------------------
|
|
|
|
def has_pure_modules (self):
|
|
return len (self.packages or self.py_modules or []) > 0
|
|
|
|
def has_ext_modules (self):
|
|
return self.ext_modules and len (self.ext_modules) > 0
|
|
|
|
def has_c_libraries (self):
|
|
return self.libraries and len (self.libraries) > 0
|
|
|
|
def has_modules (self):
|
|
return self.has_pure_modules() or self.has_ext_modules()
|
|
|
|
def is_pure (self):
|
|
return (self.has_pure_modules() and
|
|
not self.has_ext_modules() and
|
|
not self.has_c_libraries())
|
|
|
|
def get_name (self):
|
|
return self.name or "UNKNOWN"
|
|
|
|
def get_full_name (self):
|
|
return "%s-%s" % ((self.name or "UNKNOWN"), (self.version or "???"))
|
|
|
|
# class Distribution
|
|
|
|
|
|
if __name__ == "__main__":
|
|
dist = Distribution ()
|
|
print "ok"
|