utils/update-checkout

#!/usr/bin/env python
# utils/update-checkout - Utility to update your local checkouts -*- python -*-
#
# This source file is part of the Swift.org open source project
#
# Copyright (c) 2014 - 2016 Apple Inc. and the Swift project authors
# Licensed under Apache License v2.0 with Runtime Library Exception
#
# See http://swift.org/LICENSE.txt for license information
# See http://swift.org/CONTRIBUTORS.txt for the list of Swift project authors

from __future__ import print_function

import argparse
import os
import sys

sys.path.append(os.path.dirname(__file__))

from SwiftBuildSupport import (
    SWIFT_SOURCE_ROOT,
    WorkingDirectory,
    check_call,
    check_output,
)

def update_working_copy(repo_path, branch):
    if not os.path.isdir(repo_path):
        return

    print("--- Updating '" + repo_path + "' ---")
    with WorkingDirectory(repo_path):
        if branch:
            status = check_output(['git', 'status', '--porcelain'])
            if status:
                print("Please, commit your changes.")
                print(status)
                exit(1)
            check_call(['git', 'checkout', branch])

        # Prior to Git 2.6, this is the way to do a "git pull
        # --rebase" that respects rebase.autostash.  See
        # http://stackoverflow.com/a/30209750/125349
        check_call(["git", "fetch"])
        check_call(["git", "rebase", "FETCH_HEAD"])

def obtain_additional_swift_sources(with_ssh, branch):
    additional_repos = {
        'llvm': 'apple/swift-llvm',
        'clang': 'apple/swift-clang',
        'lldb': 'apple/swift-lldb',
        'cmark': 'apple/swift-cmark',
        'swift-integration-tests': 'apple/swift-integration-tests',
    }
    for dir_name, repo in additional_repos.items():
        with WorkingDirectory(SWIFT_SOURCE_ROOT):
            if not os.path.isdir(os.path.join(dir_name, ".git")):
                print("--- Cloning '" + dir_name + "' ---")
                if with_ssh is True:
                    remote = "git@github.com:" + repo + '.git'
                else:
                    remote = "https://github.com/" + repo + '.git'
                check_call(['git', 'clone', remote, dir_name])
                if branch:
                    src_path = SWIFT_SOURCE_ROOT + "/" + dir_name + "/" + ".git"
                    check_call(['git', '--git-dir', src_path, '--work-tree', os.path.join(SWIFT_SOURCE_ROOT, dir_name), 'checkout', branch])

def main():
    parser = argparse.ArgumentParser(
        formatter_class=argparse.RawDescriptionHelpFormatter,
        description="""
repositories.

By default, updates your checkouts of Swift, and LLDB.""")
    parser.add_argument("-a", "--all",
        help="also update checkouts of LLVM, and Clang",
        action="store_true")
    parser.add_argument("--clone",
        help="Obtain Sources for Swift and Related Projects",
        action="store_true")
    parser.add_argument("--clone-with-ssh",
        help="Obtain Sources for Swift and Related Projects via SSH",
        action="store_true")
    parser.add_argument("--branch",
        help="Obtain Sources for specific branch")
    args = parser.parse_args()

    clone = args.clone
    clone_with_ssh = args.clone_with_ssh
    branch = args.branch

    if clone or clone_with_ssh:
        obtain_additional_swift_sources(clone_with_ssh, branch)
        return 0

    if args.all:
        update_working_copy(os.path.join(SWIFT_SOURCE_ROOT, "llvm"), branch)
        update_working_copy(os.path.join(SWIFT_SOURCE_ROOT, "clang"), branch)

    update_working_copy(os.path.join(SWIFT_SOURCE_ROOT, "swift"), branch)
    update_working_copy(
        os.path.join(SWIFT_SOURCE_ROOT, "swift", "benchmark", "PerfTestSuite"), branch)
    update_working_copy(os.path.join(SWIFT_SOURCE_ROOT, "cmark"), branch)
    update_working_copy(os.path.join(SWIFT_SOURCE_ROOT, "lldb"), branch)
    update_working_copy(os.path.join(SWIFT_SOURCE_ROOT, "swift-integration-tests"), branch)

    return 0


if __name__ == "__main__":
    sys.exit(main())