mirror of
https://github.com/tahoe-lafs/tahoe-lafs.git
synced 2024-12-22 06:17:50 +00:00
534 lines
18 KiB
Python
534 lines
18 KiB
Python
"""setuptools.command.bdist_egg
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Build .egg distributions"""
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# This module should be kept compatible with Python 2.3
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import sys, os, marshal
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from setuptools import Command
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from distutils.dir_util import remove_tree, mkpath
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from distutils.sysconfig import get_python_version, get_python_lib
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from distutils import log
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from distutils.errors import DistutilsSetupError
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from pkg_resources import get_build_platform, Distribution, ensure_directory
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from pkg_resources import EntryPoint
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from types import CodeType
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from setuptools.extension import Library
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def strip_module(filename):
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if '.' in filename:
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filename = os.path.splitext(filename)[0]
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if filename.endswith('module'):
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filename = filename[:-6]
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return filename
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def write_stub(resource, pyfile):
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f = open(pyfile,'w')
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f.write('\n'.join([
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"def __bootstrap__():",
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" global __bootstrap__, __loader__, __file__",
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" import sys, pkg_resources, imp",
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" __file__ = pkg_resources.resource_filename(__name__,%r)"
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% resource,
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" __loader__ = None; del __bootstrap__, __loader__",
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" imp.load_dynamic(__name__,__file__)",
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"__bootstrap__()",
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"" # terminal \n
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]))
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f.close()
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# stub __init__.py for packages distributed without one
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NS_PKG_STUB = '__import__("pkg_resources").declare_namespace(__name__)'
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class bdist_egg(Command):
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description = "create an \"egg\" distribution"
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user_options = [
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('bdist-dir=', 'b',
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"temporary directory for creating the distribution"),
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('plat-name=', 'p',
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"platform name to embed in generated filenames "
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"(default: %s)" % get_build_platform()),
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('exclude-source-files', None,
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"remove all .py files from the generated egg"),
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('keep-temp', 'k',
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"keep the pseudo-installation tree around after " +
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"creating the distribution archive"),
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('dist-dir=', 'd',
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"directory to put final built distributions in"),
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('skip-build', None,
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"skip rebuilding everything (for testing/debugging)"),
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]
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boolean_options = [
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'keep-temp', 'skip-build', 'exclude-source-files'
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]
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def initialize_options (self):
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self.bdist_dir = None
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self.plat_name = None
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self.keep_temp = 0
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self.dist_dir = None
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self.skip_build = 0
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self.egg_output = None
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self.exclude_source_files = None
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def finalize_options(self):
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ei_cmd = self.ei_cmd = self.get_finalized_command("egg_info")
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self.egg_info = ei_cmd.egg_info
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if self.bdist_dir is None:
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bdist_base = self.get_finalized_command('bdist').bdist_base
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self.bdist_dir = os.path.join(bdist_base, 'egg')
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if self.plat_name is None:
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self.plat_name = get_build_platform()
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self.set_undefined_options('bdist',('dist_dir', 'dist_dir'))
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if self.egg_output is None:
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# Compute filename of the output egg
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basename = Distribution(
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None, None, ei_cmd.egg_name, ei_cmd.egg_version,
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get_python_version(),
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self.distribution.has_ext_modules() and self.plat_name
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).egg_name()
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self.egg_output = os.path.join(self.dist_dir, basename+'.egg')
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def do_install_data(self):
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# Hack for packages that install data to install's --install-lib
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self.get_finalized_command('install').install_lib = self.bdist_dir
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site_packages = os.path.normcase(os.path.realpath(get_python_lib()))
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old, self.distribution.data_files = self.distribution.data_files,[]
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for item in old:
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if isinstance(item,tuple) and len(item)==2:
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if os.path.isabs(item[0]):
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realpath = os.path.realpath(item[0])
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normalized = os.path.normcase(realpath)
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if normalized==site_packages or normalized.startswith(
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site_packages+os.sep
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):
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item = realpath[len(site_packages)+1:], item[1]
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# XXX else: raise ???
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self.distribution.data_files.append(item)
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try:
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log.info("installing package data to %s" % self.bdist_dir)
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self.call_command('install_data', force=0, root=None)
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finally:
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self.distribution.data_files = old
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def get_outputs(self):
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return [self.egg_output]
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def call_command(self,cmdname,**kw):
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"""Invoke reinitialized command `cmdname` with keyword args"""
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for dirname in INSTALL_DIRECTORY_ATTRS:
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kw.setdefault(dirname,self.bdist_dir)
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kw.setdefault('skip_build',self.skip_build)
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kw.setdefault('dry_run', self.dry_run)
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cmd = self.reinitialize_command(cmdname, **kw)
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self.run_command(cmdname)
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return cmd
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def run(self):
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# Generate metadata first
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self.run_command("egg_info")
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# We run install_lib before install_data, because some data hacks
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# pull their data path from the install_lib command.
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log.info("installing library code to %s" % self.bdist_dir)
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instcmd = self.get_finalized_command('install')
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old_root = instcmd.root; instcmd.root = None
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if self.distribution.has_c_libraries() and not self.skip_build:
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self.run_command('build_clib')
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cmd = self.call_command('install_lib', warn_dir=0)
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instcmd.root = old_root
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all_outputs, ext_outputs = self.get_ext_outputs()
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self.stubs = []
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to_compile = []
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for (p,ext_name) in enumerate(ext_outputs):
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filename,ext = os.path.splitext(ext_name)
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pyfile = os.path.join(self.bdist_dir, strip_module(filename)+'.py')
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self.stubs.append(pyfile)
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log.info("creating stub loader for %s" % ext_name)
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if not self.dry_run:
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write_stub(os.path.basename(ext_name), pyfile)
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to_compile.append(pyfile)
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ext_outputs[p] = ext_name.replace(os.sep,'/')
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to_compile.extend(self.make_init_files())
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if to_compile:
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cmd.byte_compile(to_compile)
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if self.distribution.data_files:
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self.do_install_data()
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# Make the EGG-INFO directory
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archive_root = self.bdist_dir
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egg_info = os.path.join(archive_root,'EGG-INFO')
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self.mkpath(egg_info)
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if self.distribution.scripts:
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script_dir = os.path.join(egg_info, 'scripts')
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log.info("installing scripts to %s" % script_dir)
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self.call_command('install_scripts',install_dir=script_dir,no_ep=1)
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self.copy_metadata_to(egg_info)
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native_libs = os.path.join(egg_info, "native_libs.txt")
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if all_outputs:
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log.info("writing %s" % native_libs)
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if not self.dry_run:
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ensure_directory(native_libs)
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libs_file = open(native_libs, 'wt')
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libs_file.write('\n'.join(all_outputs))
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libs_file.write('\n')
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libs_file.close()
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elif os.path.isfile(native_libs):
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log.info("removing %s" % native_libs)
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if not self.dry_run:
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os.unlink(native_libs)
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write_safety_flag(
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os.path.join(archive_root,'EGG-INFO'), self.zip_safe()
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)
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if os.path.exists(os.path.join(self.egg_info,'depends.txt')):
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log.warn(
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"WARNING: 'depends.txt' will not be used by setuptools 0.6!\n"
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"Use the install_requires/extras_require setup() args instead."
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)
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if self.exclude_source_files:
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self.zap_pyfiles()
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# Make the archive
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make_zipfile(self.egg_output, archive_root, verbose=self.verbose,
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dry_run=self.dry_run, mode=self.gen_header())
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if not self.keep_temp:
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remove_tree(self.bdist_dir, dry_run=self.dry_run)
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# Add to 'Distribution.dist_files' so that the "upload" command works
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getattr(self.distribution,'dist_files',[]).append(
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('bdist_egg',get_python_version(),self.egg_output))
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def zap_pyfiles(self):
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log.info("Removing .py files from temporary directory")
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for base,dirs,files in walk_egg(self.bdist_dir):
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for name in files:
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if name.endswith('.py'):
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path = os.path.join(base,name)
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log.debug("Deleting %s", path)
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os.unlink(path)
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def zip_safe(self):
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safe = getattr(self.distribution,'zip_safe',None)
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if safe is not None:
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return safe
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log.warn("zip_safe flag not set; analyzing archive contents...")
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return analyze_egg(self.bdist_dir, self.stubs)
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def make_init_files(self):
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"""Create missing package __init__ files"""
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init_files = []
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for base,dirs,files in walk_egg(self.bdist_dir):
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if base==self.bdist_dir:
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# don't put an __init__ in the root
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continue
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for name in files:
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if name.endswith('.py'):
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if '__init__.py' not in files:
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pkg = base[len(self.bdist_dir)+1:].replace(os.sep,'.')
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if self.distribution.has_contents_for(pkg):
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log.warn("Creating missing __init__.py for %s",pkg)
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filename = os.path.join(base,'__init__.py')
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if not self.dry_run:
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f = open(filename,'w'); f.write(NS_PKG_STUB)
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f.close()
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init_files.append(filename)
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break
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else:
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# not a package, don't traverse to subdirectories
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dirs[:] = []
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return init_files
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def gen_header(self):
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epm = EntryPoint.parse_map(self.distribution.entry_points or '')
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ep = epm.get('setuptools.installation',{}).get('eggsecutable')
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if ep is None:
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return 'w' # not an eggsecutable, do it the usual way.
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if not ep.attrs or ep.extras:
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raise DistutilsSetupError(
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"eggsecutable entry point (%r) cannot have 'extras' "
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"or refer to a module" % (ep,)
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)
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pyver = sys.version[:3]
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pkg = ep.module_name
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full = '.'.join(ep.attrs)
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base = ep.attrs[0]
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basename = os.path.basename(self.egg_output)
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header = (
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"#!/bin/sh\n"
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'if [ `basename $0` = "%(basename)s" ]\n'
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'then exec python%(pyver)s -c "'
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"import sys, os; sys.path.insert(0, os.path.abspath('$0')); "
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"from %(pkg)s import %(base)s; sys.exit(%(full)s())"
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'" "$@"\n'
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'else\n'
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' echo $0 is not the correct name for this egg file.\n'
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' echo Please rename it back to %(basename)s and try again.\n'
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' exec false\n'
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'fi\n'
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) % locals()
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if not self.dry_run:
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mkpath(os.path.dirname(self.egg_output), dry_run=self.dry_run)
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f = open(self.egg_output, 'w')
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f.write(header)
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f.close()
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return 'a'
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def copy_metadata_to(self, target_dir):
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prefix = os.path.join(self.egg_info,'')
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for path in self.ei_cmd.filelist.files:
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if path.startswith(prefix):
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target = os.path.join(target_dir, path[len(prefix):])
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ensure_directory(target)
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self.copy_file(path, target)
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def get_ext_outputs(self):
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"""Get a list of relative paths to C extensions in the output distro"""
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all_outputs = []
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ext_outputs = []
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paths = {self.bdist_dir:''}
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for base, dirs, files in os.walk(self.bdist_dir):
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for filename in files:
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if os.path.splitext(filename)[1].lower() in NATIVE_EXTENSIONS:
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all_outputs.append(paths[base]+filename)
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for filename in dirs:
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paths[os.path.join(base,filename)] = paths[base]+filename+'/'
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if self.distribution.has_ext_modules():
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build_cmd = self.get_finalized_command('build_ext')
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for ext in build_cmd.extensions:
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if isinstance(ext,Library):
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continue
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fullname = build_cmd.get_ext_fullname(ext.name)
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filename = build_cmd.get_ext_filename(fullname)
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if not os.path.basename(filename).startswith('dl-'):
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if os.path.exists(os.path.join(self.bdist_dir,filename)):
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ext_outputs.append(filename)
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return all_outputs, ext_outputs
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NATIVE_EXTENSIONS = dict.fromkeys('.dll .so .dylib .pyd'.split())
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def walk_egg(egg_dir):
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"""Walk an unpacked egg's contents, skipping the metadata directory"""
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walker = os.walk(egg_dir)
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base,dirs,files = walker.next()
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if 'EGG-INFO' in dirs:
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dirs.remove('EGG-INFO')
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yield base,dirs,files
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for bdf in walker:
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yield bdf
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def analyze_egg(egg_dir, stubs):
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# check for existing flag in EGG-INFO
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for flag,fn in safety_flags.items():
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if os.path.exists(os.path.join(egg_dir,'EGG-INFO',fn)):
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return flag
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if not can_scan(): return False
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safe = True
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for base, dirs, files in walk_egg(egg_dir):
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for name in files:
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if name.endswith('.py') or name.endswith('.pyw'):
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continue
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elif name.endswith('.pyc') or name.endswith('.pyo'):
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# always scan, even if we already know we're not safe
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safe = scan_module(egg_dir, base, name, stubs) and safe
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return safe
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def write_safety_flag(egg_dir, safe):
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# Write or remove zip safety flag file(s)
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for flag,fn in safety_flags.items():
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fn = os.path.join(egg_dir, fn)
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if os.path.exists(fn):
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if safe is None or bool(safe)!=flag:
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os.unlink(fn)
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elif safe is not None and bool(safe)==flag:
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f=open(fn,'wb'); f.write('\n'); f.close()
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safety_flags = {
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True: 'zip-safe',
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False: 'not-zip-safe',
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}
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def scan_module(egg_dir, base, name, stubs):
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"""Check whether module possibly uses unsafe-for-zipfile stuff"""
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filename = os.path.join(base,name)
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if filename[:-1] in stubs:
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return True # Extension module
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pkg = base[len(egg_dir)+1:].replace(os.sep,'.')
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module = pkg+(pkg and '.' or '')+os.path.splitext(name)[0]
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f = open(filename,'rb'); f.read(8) # skip magic & date
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code = marshal.load(f); f.close()
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safe = True
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symbols = dict.fromkeys(iter_symbols(code))
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for bad in ['__file__', '__path__']:
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if bad in symbols:
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log.warn("%s: module references %s", module, bad)
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safe = False
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if 'inspect' in symbols:
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for bad in [
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'getsource', 'getabsfile', 'getsourcefile', 'getfile'
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'getsourcelines', 'findsource', 'getcomments', 'getframeinfo',
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'getinnerframes', 'getouterframes', 'stack', 'trace'
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]:
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if bad in symbols:
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log.warn("%s: module MAY be using inspect.%s", module, bad)
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safe = False
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if '__name__' in symbols and '__main__' in symbols and '.' not in module:
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if sys.version[:3]=="2.4": # -m works w/zipfiles in 2.5
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log.warn("%s: top-level module may be 'python -m' script", module)
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safe = False
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return safe
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def iter_symbols(code):
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"""Yield names and strings used by `code` and its nested code objects"""
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for name in code.co_names: yield name
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for const in code.co_consts:
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if isinstance(const,basestring):
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yield const
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elif isinstance(const,CodeType):
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for name in iter_symbols(const):
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yield name
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def can_scan():
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if not sys.platform.startswith('java') and sys.platform != 'cli':
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# CPython, PyPy, etc.
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return True
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log.warn("Unable to analyze compiled code on this platform.")
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log.warn("Please ask the author to include a 'zip_safe'"
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" setting (either True or False) in the package's setup.py")
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# Attribute names of options for commands that might need to be convinced to
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# install to the egg build directory
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INSTALL_DIRECTORY_ATTRS = [
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'install_lib', 'install_dir', 'install_data', 'install_base'
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]
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def make_zipfile(zip_filename, base_dir, verbose=0, dry_run=0, compress=None,
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mode='w'
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):
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"""Create a zip file from all the files under 'base_dir'. The output
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zip file will be named 'base_dir' + ".zip". Uses either the "zipfile"
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Python module (if available) or the InfoZIP "zip" utility (if installed
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and found on the default search path). If neither tool is available,
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raises DistutilsExecError. Returns the name of the output zip file.
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"""
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import zipfile
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mkpath(os.path.dirname(zip_filename), dry_run=dry_run)
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log.info("creating '%s' and adding '%s' to it", zip_filename, base_dir)
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|
|
def visit(z, dirname, names):
|
|
for name in names:
|
|
path = os.path.normpath(os.path.join(dirname, name))
|
|
if os.path.isfile(path):
|
|
p = path[len(base_dir)+1:]
|
|
if not dry_run:
|
|
z.write(path, p)
|
|
log.debug("adding '%s'" % p)
|
|
|
|
if compress is None:
|
|
compress = (sys.version>="2.4") # avoid 2.3 zipimport bug when 64 bits
|
|
|
|
compression = [zipfile.ZIP_STORED, zipfile.ZIP_DEFLATED][bool(compress)]
|
|
if not dry_run:
|
|
z = zipfile.ZipFile(zip_filename, mode, compression=compression)
|
|
os.path.walk(base_dir, visit, z)
|
|
z.close()
|
|
else:
|
|
os.path.walk(base_dir, visit, None)
|
|
return zip_filename
|
|
#
|