Made an application for supporting sustainable local businesses in San Pancho.
Never really got completed, but it has some useful Svelte components for maps that we can reuse.
http://greenspots.dctrl.space
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107 lines
3.1 KiB
107 lines
3.1 KiB
import os |
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from distutils import log |
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import itertools |
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from setuptools.extern.six.moves import map |
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flatten = itertools.chain.from_iterable |
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class Installer: |
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nspkg_ext = '-nspkg.pth' |
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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._get_target()) |
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filename += self.nspkg_ext |
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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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def uninstall_namespaces(self): |
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filename, ext = os.path.splitext(self._get_target()) |
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filename += self.nspkg_ext |
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if not os.path.exists(filename): |
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return |
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log.info("Removing %s", filename) |
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os.remove(filename) |
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def _get_target(self): |
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return self.target |
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_nspkg_tmpl = ( |
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"import sys, types, os", |
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"has_mfs = sys.version_info > (3, 5)", |
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"p = os.path.join(%(root)s, *%(pth)r)", |
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"importlib = has_mfs and __import__('importlib.util')", |
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"has_mfs and __import__('importlib.machinery')", |
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"m = has_mfs and " |
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"sys.modules.setdefault(%(pkg)r, " |
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"importlib.util.module_from_spec(" |
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"importlib.machinery.PathFinder.find_spec(%(pkg)r, " |
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"[os.path.dirname(p)])))", |
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"m = m or " |
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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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def _get_root(self): |
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return "sys._getframe(1).f_locals['sitedir']" |
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def _gen_nspkg_line(self, 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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root = self._get_root() |
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tmpl_lines = self._nspkg_tmpl |
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parent, sep, child = pkg.rpartition('.') |
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if parent: |
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tmpl_lines += self._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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pkgs = self.distribution.namespace_packages or [] |
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return sorted(flatten(map(self._pkg_names, pkgs))) |
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@staticmethod |
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def _pkg_names(pkg): |
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""" |
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Given a namespace package, yield the components of that |
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package. |
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>>> names = Installer._pkg_names('a.b.c') |
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>>> set(names) == set(['a', 'a.b', 'a.b.c']) |
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True |
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""" |
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parts = pkg.split('.') |
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while parts: |
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yield '.'.join(parts) |
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parts.pop() |
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class DevelopInstaller(Installer): |
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def _get_root(self): |
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return repr(str(self.egg_path)) |
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def _get_target(self): |
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return self.egg_link
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