"""distutils.command.clean

Implements the Distutils 'clean' command."""

# contributed by Bastian Kleineidam <calvin@cs.uni-sb.de>, added 2000-03-18

import os
from distutils._log import log

from ..core import Command
from ..dir_util import remove_tree


class clean(Command):
    description = "clean up temporary files from 'build' command"
    user_options = [
        ('build-base=', 'b', "base build directory [default: 'build.build-base']"),
        (
            'build-lib=',
            None,
            "build directory for all modules [default: 'build.build-lib']",
        ),
        ('build-temp=', 't', "temporary build directory [default: 'build.build-temp']"),
        (
            'build-scripts=',
            None,
            "build directory for scripts [default: 'build.build-scripts']",
        ),
        ('bdist-base=', None, "temporary directory for built distributions"),
        ('all', 'a', "remove all build output, not just temporary by-products"),
    ]

    boolean_options = ['all']

    def initialize_options(self):
        self.build_base = None
        self.build_lib = None
        self.build_temp = None
        self.build_scripts = None
        self.bdist_base = None
        self.all = None

    def finalize_options(self):
        self.set_undefined_options(
            'build',
            ('build_base', 'build_base'),
            ('build_lib', 'build_lib'),
            ('build_scripts', 'build_scripts'),
            ('build_temp', 'build_temp'),
        )
        self.set_undefined_options('bdist', ('bdist_base', 'bdist_base'))

    def run(self):
        # remove the build/temp.<plat> directory (unless it's already
        # gone)
        if os.path.exists(self.build_temp):
            remove_tree(self.build_temp, dry_run=self.dry_run)
        else:
            log.debug("'%s' does not exist -- can't clean it", self.build_temp)

        if self.all:
            # remove build directories
            for directory in (self.build_lib, self.bdist_base, self.build_scripts):
                if os.path.exists(directory):
                    remove_tree(directory, dry_run=self.dry_run)
                else:
                    log.warning("'%s' does not exist -- can't clean it", directory)

        # just for the heck of it, try to remove the base build directory:
        # we might have emptied it right now, but if not we don't care
        if not self.dry_run:
            try:
                os.rmdir(self.build_base)
                log.info("removing '%s'", self.build_base)
            except OSError:
                pass
