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from distutils.util import convert_path
from distutils import log
from distutils.errors import DistutilsOptionError
import distutils
import os
import configparser
from setuptools import Command
__all__ = ['config_file', 'edit_config', 'option_base', 'setopt']
def config_file(kind="local"):
"""Get the filename of the distutils, local, global, or per-user config
`kind` must be one of "local", "global", or "user"
"""
if kind == 'local':
return 'setup.cfg'
if kind == 'global':
return os.path.join(os.path.dirname(distutils.__file__), 'distutils.cfg')
if kind == 'user':
dot = os.name == 'posix' and '.' or ''
return os.path.expanduser(convert_path("~/%spydistutils.cfg" % dot))
raise ValueError("config_file() type must be 'local', 'global', or 'user'", kind)
def edit_config(filename, settings, dry_run=False):
"""Edit a configuration file to include `settings`
`settings` is a dictionary of dictionaries or ``None`` values, keyed by
command/section name. A ``None`` value means to delete the entire section,
while a dictionary lists settings to be changed or deleted in that section.
A setting of ``None`` means to delete that setting.
"""
log.debug("Reading configuration from %s", filename)
opts = configparser.RawConfigParser()
opts.optionxform = lambda x: x
opts.read([filename])
for section, options in settings.items():
if options is None:
log.info("Deleting section [%s] from %s", section, filename)
opts.remove_section(section)
else:
if not opts.has_section(section):
log.debug("Adding new section [%s] to %s", section, filename)
opts.add_section(section)
for option, value in options.items():
if value is None:
log.debug("Deleting %s.%s from %s", section, option, filename)
opts.remove_option(section, option)
if not opts.options(section):
log.info(
"Deleting empty [%s] section from %s", section, filename
)
opts.remove_section(section)
else:
log.debug(
"Setting %s.%s to %r in %s", section, option, value, filename
)
opts.set(section, option, value)
log.info("Writing %s", filename)
if not dry_run:
with open(filename, 'w') as f:
opts.write(f)
class option_base(Command):
"""Abstract base class for commands that mess with config files"""
user_options = [
('global-config', 'g', "save options to the site-wide distutils.cfg file"),
('user-config', 'u', "save options to the current user's pydistutils.cfg file"),
('filename=', 'f', "configuration file to use (default=setup.cfg)"),
]
boolean_options = [
'global-config',
'user-config',
]
def initialize_options(self):
self.global_config = None
self.user_config = None
self.filename = None
def finalize_options(self):
filenames = []
if self.global_config:
filenames.append(config_file('global'))
if self.user_config:
filenames.append(config_file('user'))
if self.filename is not None:
filenames.append(self.filename)
if not filenames:
filenames.append(config_file('local'))
if len(filenames) > 1:
raise DistutilsOptionError(
"Must specify only one configuration file option", filenames
)
(self.filename,) = filenames
class setopt(option_base):
"""Save command-line options to a file"""
description = "set an option in setup.cfg or another config file"
user_options = [
('command=', 'c', 'command to set an option for'),
('option=', 'o', 'option to set'),
('set-value=', 's', 'value of the option'),
('remove', 'r', 'remove (unset) the value'),
] + option_base.user_options
boolean_options = option_base.boolean_options + ['remove']
def initialize_options(self):
option_base.initialize_options(self)
self.command = None
self.option = None
self.set_value = None
self.remove = None
def finalize_options(self):
option_base.finalize_options(self)
if self.command is None or self.option is None:
raise DistutilsOptionError("Must specify --command *and* --option")
if self.set_value is None and not self.remove:
raise DistutilsOptionError("Must specify --set-value or --remove")
def run(self):
edit_config(
self.filename,
{self.command: {self.option.replace('-', '_'): self.set_value}},
self.dry_run,
)