Restructure easy_install as a distutils "Command" object, so that it can

access the distutils configuration and logging infrastructure, and can
"inherit" options from a distutils setup script that wants to use it to
install its own dependencies.

--HG--
branch : setuptools
extra : convert_revision : svn%3A6015fed2-1504-0410-9fe1-9d1591cc4771/sandbox/trunk/setuptools%4041052

3 files changed, 122 insertions, 10 deletions

diff --git a/setuptools/__init__.py b/setuptools/__init__.py
index 12850965..0523d160 100644
--- a/setuptools/__init__.py
+++ b/setuptools/__init__.py
@@ -4,7 +4,7 @@ import distutils.core, setuptools.command
 from setuptools.dist import Distribution, Feature
 from setuptools.extension import Extension
 from setuptools.depends import Require
-from distutils.core import Command
+from distutils.core import Command as _Command
 from distutils.util import convert_path
 import os.path
 
@@ -37,6 +37,8 @@ def find_packages(where='.'):
     return out
 
 
+
+
 def setup(**attrs):
     """Do package setup
 
@@ -47,3 +49,34 @@ def setup(**attrs):
     """
     attrs.setdefault("distclass",Distribution)
     return distutils.core.setup(**attrs)
+    
+
+class Command(_Command):
+    __doc__ = _Command.__doc__
+
+    command_consumes_arguments = False
+
+    def reinitialize_command(self, command, reinit_subcommands=0, **kw):
+        cmd = _Command.reinitialize_command(self, command, reinit_subcommands)
+        for k,v in kw.items():
+            setattr(cmd,k,v)    # update command with keywords
+        return cmd
+
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diff --git a/setuptools/command/bdist_egg.py b/setuptools/command/bdist_egg.py
index ee6f2e80..18001eff 100644
--- a/setuptools/command/bdist_egg.py
+++ b/setuptools/command/bdist_egg.py
@@ -4,7 +4,7 @@ Build .egg distributions"""
 
 # This module should be kept compatible with Python 2.3
 import os
-from distutils.core import Command
+from setuptools import Command
 from distutils.util import get_platform
 from distutils.dir_util import create_tree, remove_tree, ensure_relative,mkpath
 from distutils.sysconfig import get_python_version, get_python_lib
@@ -234,16 +234,16 @@ class bdist_egg(Command):
         return match.group(1)
 
     def call_command(self,cmdname,**kw):
-        cmd = self.reinitialize_command(cmdname)
+        """Invoke reinitialized command `cmdname` with keyword args"""
         for dirname in INSTALL_DIRECTORY_ATTRS:
-            if dirname in cmd.__dict__:     # don't overwrite methods!
-                setattr(cmd,dirname,self.bdist_dir)
-        cmd.skip_build = self.skip_build
-        for k,v in kw.items():
-            setattr(cmd,k,v)
+            kw.setdefault(dirname,self.bdist_dir)
+        kw.setdefault('skip_build',self.skip_build)
+
+        cmd = self.reinitialize_command(cmdname, **kw)
         self.run_command(cmdname)
         return cmd
 
+
 # Attribute names of options for commands that might need to be convinced to
 # install to the egg build directory
 
diff --git a/setuptools/dist.py b/setuptools/dist.py
index 4d297c93..a39b4a13 100644
--- a/setuptools/dist.py
+++ b/setuptools/dist.py
@@ -1,4 +1,5 @@
 __all__ = ['Distribution', 'Feature']
+
 from distutils.core import Distribution as _Distribution
 from distutils.core import Extension
 from setuptools.depends import Require
@@ -7,8 +8,37 @@ from setuptools.command.install import install
 from setuptools.command.install_lib import install_lib
 from distutils.errors import DistutilsOptionError, DistutilsPlatformError
 from distutils.errors import DistutilsSetupError
+
 sequence = tuple, list
 
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 class Distribution(_Distribution):
     """Distribution with support for features, tests, and package data
 
@@ -54,7 +84,6 @@ class Distribution(_Distribution):
     the distribution.  They are used by the feature subsystem to configure the
     distribution for the included and excluded features.
     """
-
     def __init__ (self, attrs=None):
         have_package_data = hasattr(self, "package_data")
         if not have_package_data:
@@ -83,6 +112,15 @@ class Distribution(_Distribution):
         """Convert feature name to corresponding option attribute name"""
         return 'with_'+name.replace('-','_')
 
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     def _set_global_opts_from_features(self):
         """Add --with-X/--without-X options based on optional features"""
 
@@ -277,17 +315,58 @@ class Distribution(_Distribution):
             )
         map(self.exclude_package, packages)
 
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     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
-        return _Distribution._parse_command_opts(self, parser, args)
+
+        # Handle commands that want to consume all remaining arguments
+        command = args[0]
+        nargs = _Distribution._parse_command_opts(self, parser, args)
+
+        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 has_dependencies(self):
         return not not self.requires
 
 
 
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     def get_cmdline_options(self):
         """Return a '{cmd: {opt:val}}' map of all command-line options