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117 lines
3.9 KiB
Python
117 lines
3.9 KiB
Python
from distutils import log, dir_util
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import os
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from setuptools import Command
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from setuptools.archive_util import unpack_archive
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import pkg_resources
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class install_egg_info(Command):
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"""Install an .egg-info directory for the package"""
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description = "Install an .egg-info directory for the package"
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user_options = [
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('install-dir=', 'd', "directory to install to"),
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]
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def initialize_options(self):
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self.install_dir = None
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def finalize_options(self):
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self.set_undefined_options('install_lib',
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('install_dir', 'install_dir'))
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ei_cmd = self.get_finalized_command("egg_info")
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basename = pkg_resources.Distribution(
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None, None, ei_cmd.egg_name, ei_cmd.egg_version
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).egg_name() + '.egg-info'
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self.source = ei_cmd.egg_info
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self.target = os.path.join(self.install_dir, basename)
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self.outputs = [self.target]
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def run(self):
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self.run_command('egg_info')
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if os.path.isdir(self.target) and not os.path.islink(self.target):
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dir_util.remove_tree(self.target, dry_run=self.dry_run)
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elif os.path.exists(self.target):
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self.execute(os.unlink, (self.target,), "Removing " + self.target)
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if not self.dry_run:
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pkg_resources.ensure_directory(self.target)
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self.execute(
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self.copytree, (), "Copying %s to %s" % (self.source, self.target)
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)
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self.install_namespaces()
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def get_outputs(self):
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return self.outputs
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def copytree(self):
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# Copy the .egg-info tree to site-packages
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def skimmer(src, dst):
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# filter out source-control directories; note that 'src' is always
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# a '/'-separated path, regardless of platform. 'dst' is a
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# platform-specific path.
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for skip in '.svn/', 'CVS/':
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if src.startswith(skip) or '/' + skip in src:
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return None
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self.outputs.append(dst)
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log.debug("Copying %s to %s", src, dst)
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return dst
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unpack_archive(self.source, self.target, skimmer)
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def install_namespaces(self):
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nsp = self._get_all_ns_packages()
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if not nsp:
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return
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filename, ext = os.path.splitext(self.target)
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filename += '-nspkg.pth'
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self.outputs.append(filename)
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log.info("Installing %s", filename)
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lines = map(self._gen_nspkg_line, nsp)
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if self.dry_run:
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# always generate the lines, even in dry run
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list(lines)
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return
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with open(filename, 'wt') as f:
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f.writelines(lines)
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_nspkg_tmpl = (
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"import sys, types, os",
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"p = os.path.join(sys._getframe(1).f_locals['sitedir'], *%(pth)r)",
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"ie = os.path.exists(os.path.join(p,'__init__.py'))",
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"m = not ie and "
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"sys.modules.setdefault(%(pkg)r, types.ModuleType(%(pkg)r))",
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"mp = (m or []) and m.__dict__.setdefault('__path__',[])",
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"(p not in mp) and mp.append(p)",
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)
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"lines for the namespace installer"
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_nspkg_tmpl_multi = (
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'm and setattr(sys.modules[%(parent)r], %(child)r, m)',
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)
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"additional line(s) when a parent package is indicated"
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@classmethod
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def _gen_nspkg_line(cls, pkg):
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# ensure pkg is not a unicode string under Python 2.7
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pkg = str(pkg)
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pth = tuple(pkg.split('.'))
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tmpl_lines = cls._nspkg_tmpl
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parent, sep, child = pkg.rpartition('.')
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if parent:
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tmpl_lines += cls._nspkg_tmpl_multi
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return ';'.join(tmpl_lines) % locals() + '\n'
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def _get_all_ns_packages(self):
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"""Return sorted list of all package namespaces"""
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nsp = set()
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for pkg in self.distribution.namespace_packages or []:
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pkg = pkg.split('.')
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while pkg:
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nsp.add('.'.join(pkg))
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pkg.pop()
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return sorted(nsp)
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