Added an internal ``install_egg_info`` command to use as part of old-style

``install`` operations, that installs an ``.egg-info`` directory with the
package.  This is a preliminary step to implementing "install
--single-version-externally-managed" for use with bdist_* commands and
Debian.

--HG--
branch : setuptools
extra : convert_revision : svn%3A6015fed2-1504-0410-9fe1-9d1591cc4771/sandbox/trunk/setuptools%4041670

3 files changed, 86 insertions, 4 deletions

diff --git a/setuptools/command/__init__.py b/setuptools/command/__init__.py
index 7294d55c..3b4024b8 100644
--- a/setuptools/command/__init__.py
+++ b/setuptools/command/__init__.py
@@ -1,7 +1,7 @@
 __all__ = [
     'alias', 'bdist_egg', 'bdist_rpm', 'build_ext', 'build_py', 'develop',
     'easy_install', 'egg_info', 'install', 'install_lib', 'rotate', 'saveopts',
-    'sdist', 'setopt', 'test', 'upload',
+    'sdist', 'setopt', 'test', 'upload', 'install_egg_info',
 ]
 
 
diff --git a/setuptools/command/install.py b/setuptools/command/install.py
index 6a34ab54..51d4ffe0 100644
--- a/setuptools/command/install.py
+++ b/setuptools/command/install.py
@@ -50,9 +50,9 @@ class install(_install):
         cmd.run()
         setuptools.bootstrap_install_from = None
 
-
-
-
+    sub_commands = _install.sub_commands + [
+        ('install_egg_info', lambda self: True),
+    ]
 
 
 
diff --git a/setuptools/command/install_egg_info.py b/setuptools/command/install_egg_info.py
new file mode 100755
index 00000000..14f9755f
--- /dev/null
+++ b/setuptools/command/install_egg_info.py
@@ -0,0 +1,82 @@
+from setuptools import Command
+from setuptools.archive_util import unpack_archive
+from distutils import log, dir_util
+import os, shutil, pkg_resources
+
+class install_egg_info(Command):
+    """Install an .egg-info directory for the package"""
+
+    description = "Install an .egg-info directory for the package"
+
+    user_options = [
+        ('install-dir=', 'd', "directory to install to"),
+    ]
+
+    def initialize_options(self):
+        self.install_dir = None
+
+    def finalize_options(self):
+        self.set_undefined_options('install_lib',('install_dir','install_dir'))
+        ei_cmd = self.get_finalized_command("egg_info")
+        basename = pkg_resources.Distribution(
+            None, None, ei_cmd.egg_name, ei_cmd.egg_version
+        ).egg_name()+'.egg-info'
+        self.source = ei_cmd.egg_info
+        self.target = os.path.join(self.install_dir, basename) 
+
+    def run(self):
+        self.run_command('egg_info')
+        target = self.target
+        if os.path.isdir(self.target) and not os.path.islink(self.target):
+            dir_util.remove_tree(self.target, dry_run=self.dry_run)
+        elif os.path.exists(self.target):
+            self.execute(os.unlink,(self.target,),"Removing "+self.target)
+        if not self.dry_run:
+            pkg_resources.ensure_directory(self.target)
+        self.execute(self.copytree, (),
+            "Copying %s to %s" % (self.source, self.target)
+        )
+
+
+
+    def get_outputs(self):
+        return [self.target]    # XXX list all files, not just dir?
+
+    def copytree(self):
+        # Copy the .egg-info tree to site-packages
+        
+        def skimmer(src,dst):
+            # filter out source-control directories; note that 'src' is always
+            # a '/'-separated path, regardless of platform.  'dst' is a
+            # platform-specific path.
+            for skip in '.svn/','CVS/':
+                if src.startswith(skip) or '/'+skip in src:
+                    return None
+            log.debug("Copying %s to %s", src, dst)
+            return dst
+
+        unpack_archive(self.source, self.target, skimmer)
+
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