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from distutils import log, dir_util
import os
from setuptools.extern.six.moves import map
from setuptools import Command
from setuptools.archive_util import unpack_archive
import 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)
self.outputs = []
def run(self):
self.run_command('egg_info')
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)
)
self.install_namespaces()
def get_outputs(self):
return self.outputs
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
self.outputs.append(dst)
log.debug("Copying %s to %s", src, dst)
return dst
unpack_archive(self.source, self.target, skimmer)
def install_namespaces(self):
nsp = self._get_all_ns_packages()
if not nsp:
return
filename, ext = os.path.splitext(self.target)
filename += '-nspkg.pth'
self.outputs.append(filename)
log.info("Installing %s", filename)
lines = map(self._gen_nspkg_line, nsp)
if self.dry_run:
# always generate the lines, even in dry run
list(lines)
return
with open(filename, 'wt') as f:
f.writelines(lines)
_nspkg_tmpl = (
"import sys, types, os",
"p = os.path.join(sys._getframe(1).f_locals['sitedir'], *%(pth)r)",
"ie = os.path.exists(os.path.join(p,'__init__.py'))",
"m = not ie and "
"sys.modules.setdefault(%(pkg)r, types.ModuleType(%(pkg)r))",
"mp = (m or []) and m.__dict__.setdefault('__path__',[])",
"(p not in mp) and mp.append(p)",
)
"lines for the namespace installer"
_nspkg_tmpl_multi = (
'm and setattr(sys.modules[%(parent)r], %(child)r, m)',
)
"additional line(s) when a parent package is indicated"
@classmethod
def _gen_nspkg_line(cls, pkg):
# ensure pkg is not a unicode string under Python 2.7
pkg = str(pkg)
pth = tuple(pkg.split('.'))
tmpl_lines = cls._nspkg_tmpl
parent, sep, child = pkg.rpartition('.')
if parent:
tmpl_lines += cls._nspkg_tmpl_multi
return ';'.join(tmpl_lines) % locals() + '\n'
def _get_all_ns_packages(self):
"""Return sorted list of all package namespaces"""
nsp = set()
for pkg in self.distribution.namespace_packages or []:
pkg = pkg.split('.')
while pkg:
nsp.add('.'.join(pkg))
pkg.pop()
return sorted(nsp)
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