utils.py

#!/usr/bin/env python
#
# Copyright (C) 2017 The Android Open Source Project
#
# 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.
#
# pylint: disable=not-callable

import os
import shutil
import stat
import subprocess
import sys

THIS_DIR = os.path.realpath(os.path.dirname(__file__))


def remove(path):
    if os.path.islink(path):
        os.unlink(path)
    elif os.path.isfile(path):
        os.remove(path)
    elif os.path.isdir(path):
        rm_tree(path)


def rm_tree(treeDir):

    def chmod_and_retry(func, path, _):
        if not os.access(path, os.W_OK):
            os.chmod(path, stat.S_IWUSR)
            return func(path)
        raise IOError("rmtree on %s failed" % path)

    shutil.rmtree(treeDir, onerror=chmod_and_retry)


def android_path(*args):
    return os.path.realpath(os.path.join(THIS_DIR, '../../', *args))


def llvm_path(*args):
    return os.path.realpath(os.path.join(THIS_DIR, '../llvm', *args))


def out_path(*args):
    out_dir = os.environ.get('OUT_DIR', android_path('out'))
    return os.path.realpath(os.path.join(out_dir, *args))


def build_os_type():
    if sys.platform.startswith('linux'):
        return 'linux-x86'
    else:
        return 'darwin-x86'


def host_is_linux():
    return build_os_type() == 'linux-x86'


def host_is_darwin():
    return build_os_type() == 'darwin-x86'


def yes_or_no(prompt, default=True):
    prompt += " (Y/n)" if default else " (y/N)"
    prompt += ": "
    while True:
        reply = str(raw_input(prompt)).lower().strip()
        if len(reply) == 0:
            return default
        elif reply[0] == 'y':
            return True
        elif reply[0] == 'n':
            return False
        else:
            print "Unrecognized reply, try again"

def check_call_d(args, stdout=None, stderr=None, cwd=None, dry_run=False):
    if not dry_run:
        return subprocess.check_call(args, stdout=stdout, stderr=stderr,
                                     cwd=cwd)
    else:
        print "Project " + os.path.basename(cwd) + ": " + ' '.join(args)

def check_output_d(args, stderr=None, cwd=None, dry_run=False):
    if not dry_run:
        return subprocess.check_output(args, stderr=stderr, cwd=cwd)
    else:
        print "Project " + os.path.basename(cwd) + ": " + ' '.join(args)