1from distutils import log, dir_util
2import os
3
4from setuptools import Command
5from setuptools import namespaces
6from setuptools.archive_util import unpack_archive
7import pkg_resources
8
9
10class install_egg_info(namespaces.Installer, Command):
11    """Install an .egg-info directory for the package"""
12
13    description = "Install an .egg-info directory for the package"
14
15    user_options = [
16        ('install-dir=', 'd', "directory to install to"),
17    ]
18
19    def initialize_options(self):
20        self.install_dir = None
21
22    def finalize_options(self):
23        self.set_undefined_options('install_lib',
24                                   ('install_dir', 'install_dir'))
25        ei_cmd = self.get_finalized_command("egg_info")
26        basename = pkg_resources.Distribution(
27            None, None, ei_cmd.egg_name, ei_cmd.egg_version
28        ).egg_name() + '.egg-info'
29        self.source = ei_cmd.egg_info
30        self.target = os.path.join(self.install_dir, basename)
31        self.outputs = []
32
33    def run(self):
34        self.run_command('egg_info')
35        if os.path.isdir(self.target) and not os.path.islink(self.target):
36            dir_util.remove_tree(self.target, dry_run=self.dry_run)
37        elif os.path.exists(self.target):
38            self.execute(os.unlink, (self.target,), "Removing " + self.target)
39        if not self.dry_run:
40            pkg_resources.ensure_directory(self.target)
41        self.execute(
42            self.copytree, (), "Copying %s to %s" % (self.source, self.target)
43        )
44        self.install_namespaces()
45
46    def get_outputs(self):
47        return self.outputs
48
49    def copytree(self):
50        # Copy the .egg-info tree to site-packages
51        def skimmer(src, dst):
52            # filter out source-control directories; note that 'src' is always
53            # a '/'-separated path, regardless of platform.  'dst' is a
54            # platform-specific path.
55            for skip in '.svn/', 'CVS/':
56                if src.startswith(skip) or '/' + skip in src:
57                    return None
58            self.outputs.append(dst)
59            log.debug("Copying %s to %s", src, dst)
60            return dst
61
62        unpack_archive(self.source, self.target, skimmer)
63