271 lines
9.3 KiB
Python
271 lines
9.3 KiB
Python
from glob import glob
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from distutils.util import convert_path
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import distutils.command.build_py as orig
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import os
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import fnmatch
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import textwrap
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import io
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import distutils.errors
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import itertools
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import stat
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try:
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from setuptools.lib2to3_ex import Mixin2to3
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except Exception:
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class Mixin2to3:
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def run_2to3(self, files, doctests=True):
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"do nothing"
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def make_writable(target):
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os.chmod(target, os.stat(target).st_mode | stat.S_IWRITE)
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class build_py(orig.build_py, Mixin2to3):
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"""Enhanced 'build_py' command that includes data files with packages
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The data files are specified via a 'package_data' argument to 'setup()'.
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See 'setuptools.dist.Distribution' for more details.
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Also, this version of the 'build_py' command allows you to specify both
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'py_modules' and 'packages' in the same setup operation.
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"""
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def finalize_options(self):
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orig.build_py.finalize_options(self)
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self.package_data = self.distribution.package_data
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self.exclude_package_data = (self.distribution.exclude_package_data or
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{})
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if 'data_files' in self.__dict__:
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del self.__dict__['data_files']
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self.__updated_files = []
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self.__doctests_2to3 = []
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def run(self):
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"""Build modules, packages, and copy data files to build directory"""
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if not self.py_modules and not self.packages:
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return
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if self.py_modules:
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self.build_modules()
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if self.packages:
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self.build_packages()
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self.build_package_data()
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self.run_2to3(self.__updated_files, False)
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self.run_2to3(self.__updated_files, True)
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self.run_2to3(self.__doctests_2to3, True)
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# Only compile actual .py files, using our base class' idea of what our
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# output files are.
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self.byte_compile(orig.build_py.get_outputs(self, include_bytecode=0))
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def __getattr__(self, attr):
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"lazily compute data files"
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if attr == 'data_files':
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self.data_files = self._get_data_files()
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return self.data_files
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return orig.build_py.__getattr__(self, attr)
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def build_module(self, module, module_file, package):
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outfile, copied = orig.build_py.build_module(self, module, module_file,
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package)
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if copied:
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self.__updated_files.append(outfile)
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return outfile, copied
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def _get_data_files(self):
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"""Generate list of '(package,src_dir,build_dir,filenames)' tuples"""
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self.analyze_manifest()
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return list(map(self._get_pkg_data_files, self.packages or ()))
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def _get_pkg_data_files(self, package):
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# Locate package source directory
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src_dir = self.get_package_dir(package)
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# Compute package build directory
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build_dir = os.path.join(*([self.build_lib] + package.split('.')))
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# Strip directory from globbed filenames
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filenames = [
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os.path.relpath(file, src_dir)
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for file in self.find_data_files(package, src_dir)
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]
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return package, src_dir, build_dir, filenames
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def find_data_files(self, package, src_dir):
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"""Return filenames for package's data files in 'src_dir'"""
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patterns = self._get_platform_patterns(
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self.package_data,
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package,
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src_dir,
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)
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globs_expanded = map(glob, patterns)
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# flatten the expanded globs into an iterable of matches
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globs_matches = itertools.chain.from_iterable(globs_expanded)
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glob_files = filter(os.path.isfile, globs_matches)
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files = itertools.chain(
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self.manifest_files.get(package, []),
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glob_files,
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)
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return self.exclude_data_files(package, src_dir, files)
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def build_package_data(self):
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"""Copy data files into build directory"""
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for package, src_dir, build_dir, filenames in self.data_files:
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for filename in filenames:
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target = os.path.join(build_dir, filename)
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self.mkpath(os.path.dirname(target))
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srcfile = os.path.join(src_dir, filename)
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outf, copied = self.copy_file(srcfile, target)
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make_writable(target)
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srcfile = os.path.abspath(srcfile)
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if (copied and
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srcfile in self.distribution.convert_2to3_doctests):
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self.__doctests_2to3.append(outf)
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def analyze_manifest(self):
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self.manifest_files = mf = {}
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if not self.distribution.include_package_data:
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return
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src_dirs = {}
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for package in self.packages or ():
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# Locate package source directory
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src_dirs[assert_relative(self.get_package_dir(package))] = package
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self.run_command('egg_info')
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ei_cmd = self.get_finalized_command('egg_info')
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for path in ei_cmd.filelist.files:
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d, f = os.path.split(assert_relative(path))
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prev = None
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oldf = f
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while d and d != prev and d not in src_dirs:
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prev = d
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d, df = os.path.split(d)
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f = os.path.join(df, f)
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if d in src_dirs:
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if path.endswith('.py') and f == oldf:
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continue # it's a module, not data
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mf.setdefault(src_dirs[d], []).append(path)
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def get_data_files(self):
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pass # Lazily compute data files in _get_data_files() function.
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def check_package(self, package, package_dir):
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"""Check namespace packages' __init__ for declare_namespace"""
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try:
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return self.packages_checked[package]
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except KeyError:
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pass
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init_py = orig.build_py.check_package(self, package, package_dir)
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self.packages_checked[package] = init_py
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if not init_py or not self.distribution.namespace_packages:
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return init_py
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for pkg in self.distribution.namespace_packages:
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if pkg == package or pkg.startswith(package + '.'):
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break
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else:
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return init_py
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with io.open(init_py, 'rb') as f:
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contents = f.read()
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if b'declare_namespace' not in contents:
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raise distutils.errors.DistutilsError(
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"Namespace package problem: %s is a namespace package, but "
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"its\n__init__.py does not call declare_namespace()! Please "
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'fix it.\n(See the setuptools manual under '
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'"Namespace Packages" for details.)\n"' % (package,)
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)
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return init_py
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def initialize_options(self):
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self.packages_checked = {}
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orig.build_py.initialize_options(self)
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def get_package_dir(self, package):
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res = orig.build_py.get_package_dir(self, package)
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if self.distribution.src_root is not None:
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return os.path.join(self.distribution.src_root, res)
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return res
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def exclude_data_files(self, package, src_dir, files):
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"""Filter filenames for package's data files in 'src_dir'"""
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files = list(files)
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patterns = self._get_platform_patterns(
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self.exclude_package_data,
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package,
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src_dir,
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)
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match_groups = (
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fnmatch.filter(files, pattern)
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for pattern in patterns
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)
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# flatten the groups of matches into an iterable of matches
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matches = itertools.chain.from_iterable(match_groups)
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bad = set(matches)
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keepers = (
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fn
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for fn in files
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if fn not in bad
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)
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# ditch dupes
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return list(_unique_everseen(keepers))
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@staticmethod
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def _get_platform_patterns(spec, package, src_dir):
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"""
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yield platform-specific path patterns (suitable for glob
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or fn_match) from a glob-based spec (such as
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self.package_data or self.exclude_package_data)
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matching package in src_dir.
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"""
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raw_patterns = itertools.chain(
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spec.get('', []),
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spec.get(package, []),
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)
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return (
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# Each pattern has to be converted to a platform-specific path
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os.path.join(src_dir, convert_path(pattern))
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for pattern in raw_patterns
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)
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# from Python docs
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def _unique_everseen(iterable, key=None):
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"List unique elements, preserving order. Remember all elements ever seen."
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# unique_everseen('AAAABBBCCDAABBB') --> A B C D
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# unique_everseen('ABBCcAD', str.lower) --> A B C D
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seen = set()
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seen_add = seen.add
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if key is None:
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for element in itertools.filterfalse(seen.__contains__, iterable):
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seen_add(element)
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yield element
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else:
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for element in iterable:
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k = key(element)
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if k not in seen:
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seen_add(k)
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yield element
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def assert_relative(path):
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if not os.path.isabs(path):
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return path
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from distutils.errors import DistutilsSetupError
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msg = textwrap.dedent("""
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Error: setup script specifies an absolute path:
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%s
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setup() arguments must *always* be /-separated paths relative to the
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setup.py directory, *never* absolute paths.
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""").lstrip() % path
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raise DistutilsSetupError(msg)
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