author John Schoenick <>
Wed, 04 Mar 2015 23:09:00 -0500
changeset 258436 dffb5c867f476431f65783822d0e2b380f58d7e0
parent 257719 b4de64871d158173dda862d93e0125bb9827dded
child 260716 8add60e27b0a9210a092058a1afe20f36cf21f43
permissions -rw-r--r--
Bug 1139560 - Reject non-standard parses of integers in srcset descriptors. r=jst, a=sledru

# This Source Code Form is subject to the terms of the Mozilla Public
# License, v. 2.0. If a copy of the MPL was not distributed with this
# file, You can obtain one at

from __future__ import print_function, unicode_literals

import os
import platform
import sys
import time

mach and the build system store shared state in a common directory on the
filesystem. The following directory will be created:


If you would like to use a different directory, hit CTRL+c and set the
MOZBUILD_STATE_PATH environment variable to the directory you would like to
use and re-run mach. For this change to take effect forever, you'll likely
want to export this environment variable from your shell's init scripts.

# TODO Bug 794506 Integrate with the in-tree virtualenv configuration.

# Individual files providing mach commands.

    'build': {
        'short': 'Build Commands',
        'long': 'Interact with the build system',
        'priority': 80,
    'post-build': {
        'short': 'Post-build Commands',
        'long': 'Common actions performed after completing a build.',
        'priority': 70,
    'testing': {
        'short': 'Testing',
        'long': 'Run tests.',
        'priority': 60,
    'ci': {
        'short': 'CI',
        'long': 'Taskcluster commands',
        'priority': 59
    'devenv': {
        'short': 'Development Environment',
        'long': 'Set up and configure your development environment.',
        'priority': 50,
    'build-dev': {
        'short': 'Low-level Build System Interaction',
        'long': 'Interact with specific parts of the build system.',
        'priority': 20,
    'misc': {
        'short': 'Potpourri',
        'long': 'Potent potables and assorted snacks.',
        'priority': 10,
    'disabled': {
        'short': 'Disabled',
        'long': 'The disabled commands are hidden by default. Use -v to display them. These commands are unavailable for your current context, run "mach <command>" to see why.',
        'priority': 0,

def bootstrap(topsrcdir, mozilla_dir=None):
    if mozilla_dir is None:
        mozilla_dir = topsrcdir

    # Ensure we are running Python 2.7+. We put this check here so we generate a
    # user-friendly error message rather than a cryptic stack trace on module
    # import.
    if sys.version_info[0] != 2 or sys.version_info[1] < 7:
        print('Python 2.7 or above (but not Python 3) is required to run mach.')
        print('You are running Python', platform.python_version())

    # Global build system and mach state is stored in a central directory. By
    # default, this is ~/.mozbuild. However, it can be defined via an
    # environment variable. We detect first run (by lack of this directory
    # existing) and notify the user that it will be created. The logic for
    # creation is much simpler for the "advanced" environment variable use
    # case. For default behavior, we educate users and give them an opportunity
    # to react. We always exit after creating the directory because users don't
    # like surprises.
        import mach.main
    except ImportError:
        sys.path[0:0] = [os.path.join(mozilla_dir, path) for path in SEARCH_PATHS]
        import mach.main

    def populate_context(context, key=None):
        if key is None:
        if key == 'state_dir':
            state_user_dir = os.path.expanduser('~/.mozbuild')
            state_env_dir = os.environ.get('MOZBUILD_STATE_PATH', None)
            if state_env_dir:
                if not os.path.exists(state_env_dir):
                    print('Creating global state directory from environment variable: %s'
                        % state_env_dir)
                    os.makedirs(state_env_dir, mode=0o770)
                    print('Please re-run mach.')
                state_dir = state_env_dir
                if not os.path.exists(state_user_dir):
                        for i in range(20, -1, -1):
                            sys.stdout.write('%d ' % i)
                    except KeyboardInterrupt:

                    print('\nCreating default state directory: %s' % state_user_dir)
                    print('Please re-run mach.')
                state_dir = state_user_dir

            return state_dir
        if key == 'topdir':
            return topsrcdir
        raise AttributeError(key)

    mach = mach.main.Mach(os.getcwd())
    mach.populate_context_handler = populate_context

    for category, meta in CATEGORIES.items():
        mach.define_category(category, meta['short'], meta['long'],

    for path in MACH_MODULES:
        mach.load_commands_from_file(os.path.join(mozilla_dir, path))

    return mach