Viewing file:  util.py (24.29 KB) -rw-r--r--
Select action/file-type:
 (+) |  (+) |  (+) | Code (+) | Session (+) |  (+) | SDB (+) |  (+) |  (+) |  (+) |  (+) |  (+) |
# Copyright (c) 2013 Hewlett-Packard Development Company, L.P.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
# implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
# Copyright (C) 2013 Association of Universities for Research in Astronomy
# (AURA)
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are met:
#
# 1. Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
#
# 2. Redistributions in binary form must reproduce the above
# copyright notice, this list of conditions and the following
# disclaimer in the documentation and/or other materials provided
# with the distribution.
#
# 3. The name of AURA and its representatives may not be used to
# endorse or promote products derived from this software without
# specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY AURA ``AS IS'' AND ANY EXPRESS OR IMPLIED
# WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
# MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
# DISCLAIMED. IN NO EVENT SHALL AURA BE LIABLE FOR ANY DIRECT, INDIRECT,
# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
# OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
# ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
# TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
# USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
# DAMAGE.
"""The code in this module is mostly copy/pasted out of the distutils2 source
code, as recommended by Tarek Ziade. As such, it may be subject to some change
as distutils2 development continues, and will have to be kept up to date.
I didn't want to use it directly from distutils2 itself, since I do not want it
to be an installation dependency for our packages yet--it is still too unstable
(the latest version on PyPI doesn't even install).
"""
# These first two imports are not used, but are needed to get around an
# irritating Python bug that can crop up when using ./setup.py test.
# See: http://www.eby-sarna.com/pipermail/peak/2010-May/003355.html
try:
import multiprocessing # flake8: noqa
except ImportError:
pass
import logging # flake8: noqa
import os
import re
import sys
import traceback
from collections import defaultdict
import distutils.ccompiler
from distutils import log
from distutils.errors import (DistutilsOptionError, DistutilsModuleError,
DistutilsFileError)
from setuptools.command.egg_info import manifest_maker
from setuptools.dist import Distribution
from setuptools.extension import Extension
try:
import ConfigParser as configparser
except ImportError:
import configparser
from pbr import extra_files
import pbr.hooks
# A simplified RE for this; just checks that the line ends with version
# predicates in ()
_VERSION_SPEC_RE = re.compile(r'\s*(.*?)\s*\((.*)\)\s*$')
# Mappings from setup() keyword arguments to setup.cfg options;
# The values are (section, option) tuples, or simply (section,) tuples if
# the option has the same name as the setup() argument
D1_D2_SETUP_ARGS = {
"name": ("metadata",),
"version": ("metadata",),
"author": ("metadata",),
"author_email": ("metadata",),
"maintainer": ("metadata",),
"maintainer_email": ("metadata",),
"url": ("metadata", "home_page"),
"description": ("metadata", "summary"),
"keywords": ("metadata",),
"long_description": ("metadata", "description"),
"download-url": ("metadata",),
"classifiers": ("metadata", "classifier"),
"platforms": ("metadata", "platform"), # **
"license": ("metadata",),
# Use setuptools install_requires, not
# broken distutils requires
"install_requires": ("metadata", "requires_dist"),
"setup_requires": ("metadata", "setup_requires_dist"),
"provides": ("metadata", "provides_dist"), # **
"obsoletes": ("metadata", "obsoletes_dist"), # **
"package_dir": ("files", 'packages_root'),
"packages": ("files",),
"package_data": ("files",),
"namespace_packages": ("files",),
"data_files": ("files",),
"scripts": ("files",),
"py_modules": ("files", "modules"), # **
"cmdclass": ("global", "commands"),
# Not supported in distutils2, but provided for
# backwards compatibility with setuptools
"use_2to3": ("backwards_compat", "use_2to3"),
"zip_safe": ("backwards_compat", "zip_safe"),
"tests_require": ("backwards_compat", "tests_require"),
"dependency_links": ("backwards_compat",),
"include_package_data": ("backwards_compat",),
}
# setup() arguments that can have multiple values in setup.cfg
MULTI_FIELDS = ("classifiers",
"platforms",
"install_requires",
"provides",
"obsoletes",
"namespace_packages",
"packages",
"package_data",
"data_files",
"scripts",
"py_modules",
"dependency_links",
"setup_requires",
"tests_require",
"cmdclass")
# setup() arguments that contain boolean values
BOOL_FIELDS = ("use_2to3", "zip_safe", "include_package_data")
CSV_FIELDS = ("keywords",)
def resolve_name(name):
"""Resolve a name like ``module.object`` to an object and return it.
Raise ImportError if the module or name is not found.
"""
parts = name.split('.')
cursor = len(parts) - 1
module_name = parts[:cursor]
attr_name = parts[-1]
while cursor > 0:
try:
ret = __import__('.'.join(module_name), fromlist=[attr_name])
break
except ImportError:
if cursor == 0:
raise
cursor -= 1
module_name = parts[:cursor]
attr_name = parts[cursor]
ret = ''
for part in parts[cursor:]:
try:
ret = getattr(ret, part)
except AttributeError:
raise ImportError(name)
return ret
def cfg_to_args(path='setup.cfg'):
""" Distutils2 to distutils1 compatibility util.
This method uses an existing setup.cfg to generate a dictionary of
keywords that can be used by distutils.core.setup(kwargs**).
:param file:
The setup.cfg path.
:raises DistutilsFileError:
When the setup.cfg file is not found.
"""
# The method source code really starts here.
parser = configparser.SafeConfigParser()
if not os.path.exists(path):
raise DistutilsFileError("file '%s' does not exist" %
os.path.abspath(path))
parser.read(path)
config = {}
for section in parser.sections():
config[section] = dict(parser.items(section))
# Run setup_hooks, if configured
setup_hooks = has_get_option(config, 'global', 'setup_hooks')
package_dir = has_get_option(config, 'files', 'packages_root')
# Add the source package directory to sys.path in case it contains
# additional hooks, and to make sure it's on the path before any existing
# installations of the package
if package_dir:
package_dir = os.path.abspath(package_dir)
sys.path.insert(0, package_dir)
try:
if setup_hooks:
setup_hooks = [
hook for hook in split_multiline(setup_hooks)
if hook != 'pbr.hooks.setup_hook']
for hook in setup_hooks:
hook_fn = resolve_name(hook)
try :
hook_fn(config)
except SystemExit:
log.error('setup hook %s terminated the installation')
except:
e = sys.exc_info()[1]
log.error('setup hook %s raised exception: %s\n' %
(hook, e))
log.error(traceback.format_exc())
sys.exit(1)
# Run the pbr hook
pbr.hooks.setup_hook(config)
kwargs = setup_cfg_to_setup_kwargs(config)
# Set default config overrides
kwargs['include_package_data'] = True
kwargs['zip_safe'] = False
register_custom_compilers(config)
ext_modules = get_extension_modules(config)
if ext_modules:
kwargs['ext_modules'] = ext_modules
entry_points = get_entry_points(config)
if entry_points:
kwargs['entry_points'] = entry_points
wrap_commands(kwargs)
# Handle the [files]/extra_files option
files_extra_files = has_get_option(config, 'files', 'extra_files')
if files_extra_files:
extra_files.set_extra_files(split_multiline(files_extra_files))
finally:
# Perform cleanup if any paths were added to sys.path
if package_dir:
sys.path.pop(0)
return kwargs
def setup_cfg_to_setup_kwargs(config):
"""Processes the setup.cfg options and converts them to arguments accepted
by setuptools' setup() function.
"""
kwargs = {}
# Temporarily holds install_reqires and extra_requires while we
# parse env_markers.
all_requirements = {}
for arg in D1_D2_SETUP_ARGS:
if len(D1_D2_SETUP_ARGS[arg]) == 2:
# The distutils field name is different than distutils2's.
section, option = D1_D2_SETUP_ARGS[arg]
elif len(D1_D2_SETUP_ARGS[arg]) == 1:
# The distutils field name is the same thant distutils2's.
section = D1_D2_SETUP_ARGS[arg][0]
option = arg
in_cfg_value = has_get_option(config, section, option)
if not in_cfg_value:
# There is no such option in the setup.cfg
if arg == "long_description":
in_cfg_value = has_get_option(config, section,
"description_file")
if in_cfg_value:
in_cfg_value = split_multiline(in_cfg_value)
value = ''
for filename in in_cfg_value:
description_file = open(filename)
try:
value += description_file.read().strip() + '\n\n'
finally:
description_file.close()
in_cfg_value = value
else:
continue
if arg in CSV_FIELDS:
in_cfg_value = split_csv(in_cfg_value)
if arg in MULTI_FIELDS:
in_cfg_value = split_multiline(in_cfg_value)
elif arg in BOOL_FIELDS:
# Provide some flexibility here...
if in_cfg_value.lower() in ('true', 't', '1', 'yes', 'y'):
in_cfg_value = True
else:
in_cfg_value = False
if in_cfg_value:
if arg in ('install_requires', 'tests_require'):
# Replaces PEP345-style version specs with the sort expected by
# setuptools
in_cfg_value = [_VERSION_SPEC_RE.sub(r'\1\2', pred)
for pred in in_cfg_value]
if arg == 'install_requires':
# Split install_requires into package,env_marker tuples
# These will be re-assembled later
install_requires = []
requirement_pattern = '(?P<package>[^;]*);?(?P<env_marker>[^#]*?)(?:\s*#.*)?$'
for requirement in in_cfg_value:
m = re.match(requirement_pattern, requirement)
requirement_package = m.group('package').strip()
env_marker = m.group('env_marker').strip()
install_requires.append((requirement_package,env_marker))
all_requirements[''] = install_requires
elif arg == 'package_dir':
in_cfg_value = {'': in_cfg_value}
elif arg in ('package_data', 'data_files'):
data_files = {}
firstline = True
prev = None
for line in in_cfg_value:
if '=' in line:
key, value = line.split('=', 1)
key, value = (key.strip(), value.strip())
if key in data_files:
# Multiple duplicates of the same package name;
# this is for backwards compatibility of the old
# format prior to d2to1 0.2.6.
prev = data_files[key]
prev.extend(value.split())
else:
prev = data_files[key.strip()] = value.split()
elif firstline:
raise DistutilsOptionError(
'malformed package_data first line %r (misses '
'"=")' % line)
else:
prev.extend(line.strip().split())
firstline = False
if arg == 'data_files':
# the data_files value is a pointlessly different structure
# from the package_data value
data_files = data_files.items()
in_cfg_value = data_files
elif arg == 'cmdclass':
cmdclass = {}
dist = Distribution()
for cls_name in in_cfg_value:
cls = resolve_name(cls_name)
cmd = cls(dist)
cmdclass[cmd.get_command_name()] = cls
in_cfg_value = cmdclass
kwargs[arg] = in_cfg_value
# Transform requirements with embedded environment markers to
# setuptools' supported marker-per-requirement format.
#
# install_requires are treated as a special case of extras, before
# being put back in the expected place
#
# fred =
# foo:marker
# bar
# -> {'fred': ['bar'], 'fred:marker':['foo']}
if 'extras' in config:
requirement_pattern = '(?P<package>[^:]*):?(?P<env_marker>[^#]*?)(?:\s*#.*)?$'
extras = config['extras']
for extra in extras:
extra_requirements = []
requirements = split_multiline(extras[extra])
for requirement in requirements:
m = re.match(requirement_pattern, requirement)
extras_value = m.group('package').strip()
env_marker = m.group('env_marker')
extra_requirements.append((extras_value,env_marker))
all_requirements[extra] = extra_requirements
# Transform the full list of requirements into:
# - install_requires, for those that have no extra and no
# env_marker
# - named extras, for those with an extra name (which may include
# an env_marker)
# - and as a special case, install_requires with an env_marker are
# treated as named extras where the name is the empty string
extras_require = {}
for req_group in all_requirements:
for requirement, env_marker in all_requirements[req_group]:
if env_marker:
extras_key = '%s:(%s)' % (req_group, env_marker)
else:
extras_key = req_group
extras_require.setdefault(extras_key, []).append(requirement)
kwargs['install_requires'] = extras_require.pop('', [])
kwargs['extras_require'] = extras_require
return kwargs
def register_custom_compilers(config):
"""Handle custom compilers; this has no real equivalent in distutils, where
additional compilers could only be added programmatically, so we have to
hack it in somehow.
"""
compilers = has_get_option(config, 'global', 'compilers')
if compilers:
compilers = split_multiline(compilers)
for compiler in compilers:
compiler = resolve_name(compiler)
# In distutils2 compilers these class attributes exist; for
# distutils1 we just have to make something up
if hasattr(compiler, 'name'):
name = compiler.name
else:
name = compiler.__name__
if hasattr(compiler, 'description'):
desc = compiler.description
else:
desc = 'custom compiler %s' % name
module_name = compiler.__module__
# Note; this *will* override built in compilers with the same name
# TODO: Maybe display a warning about this?
cc = distutils.ccompiler.compiler_class
cc[name] = (module_name, compiler.__name__, desc)
# HACK!!!! Distutils assumes all compiler modules are in the
# distutils package
sys.modules['distutils.' + module_name] = sys.modules[module_name]
def get_extension_modules(config):
"""Handle extension modules"""
EXTENSION_FIELDS = ("sources",
"include_dirs",
"define_macros",
"undef_macros",
"library_dirs",
"libraries",
"runtime_library_dirs",
"extra_objects",
"extra_compile_args",
"extra_link_args",
"export_symbols",
"swig_opts",
"depends")
ext_modules = []
for section in config:
if ':' in section:
labels = section.split(':', 1)
else:
# Backwards compatibility for old syntax; don't use this though
labels = section.split('=', 1)
labels = [l.strip() for l in labels]
if (len(labels) == 2) and (labels[0] == 'extension'):
ext_args = {}
for field in EXTENSION_FIELDS:
value = has_get_option(config, section, field)
# All extension module options besides name can have multiple
# values
if not value:
continue
value = split_multiline(value)
if field == 'define_macros':
macros = []
for macro in value:
macro = macro.split('=', 1)
if len(macro) == 1:
macro = (macro[0].strip(), None)
else:
macro = (macro[0].strip(), macro[1].strip())
macros.append(macro)
value = macros
ext_args[field] = value
if ext_args:
if 'name' not in ext_args:
ext_args['name'] = labels[1]
ext_modules.append(Extension(ext_args.pop('name'),
**ext_args))
return ext_modules
def get_entry_points(config):
"""Process the [entry_points] section of setup.cfg to handle setuptools
entry points. This is, of course, not a standard feature of
distutils2/packaging, but as there is not currently a standard alternative
in packaging, we provide support for them.
"""
if not 'entry_points' in config:
return {}
return dict((option, split_multiline(value))
for option, value in config['entry_points'].items())
def wrap_commands(kwargs):
dist = Distribution()
# This should suffice to get the same config values and command classes
# that the actual Distribution will see (not counting cmdclass, which is
# handled below)
dist.parse_config_files()
for cmd, _ in dist.get_command_list():
hooks = {}
for opt, val in dist.get_option_dict(cmd).items():
val = val[1]
if opt.startswith('pre_hook.') or opt.startswith('post_hook.'):
hook_type, alias = opt.split('.', 1)
hook_dict = hooks.setdefault(hook_type, {})
hook_dict[alias] = val
if not hooks:
continue
if 'cmdclass' in kwargs and cmd in kwargs['cmdclass']:
cmdclass = kwargs['cmdclass'][cmd]
else:
cmdclass = dist.get_command_class(cmd)
new_cmdclass = wrap_command(cmd, cmdclass, hooks)
kwargs.setdefault('cmdclass', {})[cmd] = new_cmdclass
def wrap_command(cmd, cmdclass, hooks):
def run(self, cmdclass=cmdclass):
self.run_command_hooks('pre_hook')
cmdclass.run(self)
self.run_command_hooks('post_hook')
return type(cmd, (cmdclass, object),
{'run': run, 'run_command_hooks': run_command_hooks,
'pre_hook': hooks.get('pre_hook'),
'post_hook': hooks.get('post_hook')})
def run_command_hooks(cmd_obj, hook_kind):
"""Run hooks registered for that command and phase.
*cmd_obj* is a finalized command object; *hook_kind* is either
'pre_hook' or 'post_hook'.
"""
if hook_kind not in ('pre_hook', 'post_hook'):
raise ValueError('invalid hook kind: %r' % hook_kind)
hooks = getattr(cmd_obj, hook_kind, None)
if hooks is None:
return
for hook in hooks.values():
if isinstance(hook, str):
try:
hook_obj = resolve_name(hook)
except ImportError:
err = sys.exc_info()[1] # For py3k
raise DistutilsModuleError('cannot find hook %s: %s' %
(hook,err))
else:
hook_obj = hook
if not hasattr(hook_obj, '__call__'):
raise DistutilsOptionError('hook %r is not callable' % hook)
log.info('running %s %s for command %s',
hook_kind, hook, cmd_obj.get_command_name())
try :
hook_obj(cmd_obj)
except:
e = sys.exc_info()[1]
log.error('hook %s raised exception: %s\n' % (hook, e))
log.error(traceback.format_exc())
sys.exit(1)
def has_get_option(config, section, option):
if section in config and option in config[section]:
return config[section][option]
elif section in config and option.replace('_', '-') in config[section]:
return config[section][option.replace('_', '-')]
else:
return False
def split_multiline(value):
"""Special behaviour when we have a multi line options"""
value = [element for element in
(line.strip() for line in value.split('\n'))
if element]
return value
def split_csv(value):
"""Special behaviour when we have a comma separated options"""
value = [element for element in
(chunk.strip() for chunk in value.split(','))
if element]
return value
def monkeypatch_method(cls):
"""A function decorator to monkey-patch a method of the same name on the
given class.
"""
def wrapper(func):
orig = getattr(cls, func.__name__, None)
if orig and not hasattr(orig, '_orig'): # Already patched
setattr(func, '_orig', orig)
setattr(cls, func.__name__, func)
return func
return wrapper
# The following classes are used to hack Distribution.command_options a bit
class DefaultGetDict(defaultdict):
"""Like defaultdict, but the get() method also sets and returns the default
value.
"""
def get(self, key, default=None):
if default is None:
default = self.default_factory()
return super(DefaultGetDict, self).setdefault(key, default)
class IgnoreDict(dict):
"""A dictionary that ignores any insertions in which the key is a string
matching any string in `ignore`. The ignore list can also contain wildcard
patterns using '*'.
"""
def __init__(self, ignore):
self.__ignore = re.compile(r'(%s)' % ('|'.join(
[pat.replace('*', '.*')
for pat in ignore])))
def __setitem__(self, key, val):
if self.__ignore.match(key):
return
super(IgnoreDict, self).__setitem__(key, val)
|