build/variables.py
author Jonathan Watt <jwatt@jwatt.org>
Mon, 09 Jan 2017 19:12:02 +0000
changeset 340973 b6959c93a4f797df7a6ce95e79a5490bc9004f04
parent 327194 f7d511576146dc87155c0b79a35369e8de966b41
child 385817 6074db12d685655fe5692d59471b3c32cc967dc9
permissions -rw-r--r--
Bug 1058040, part 6 - When copying SVGImageContexts use the copy ctor. r=dholbert Prior to this patch whenever we wanted to pass on a modified SVGImageContext we would pass on a new object initialized with some of the data of the object we were given and with the new data we wanted to change. Unfortunately we were sometimes failing to faithfully copy member data that we do not want to modify (because of default arguments). This patch fixes that by making us fully copy the object we were given using its copy constructor and then explicitly override the data we want to change.

# 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 http://mozilla.org/MPL/2.0/.

from __future__ import print_function, unicode_literals

import os
import subprocess
import sys
from datetime import datetime

SOURCESTAMP_FILENAME = 'sourcestamp.txt'

def buildid_header(output):
    buildid = os.environ.get('MOZ_BUILD_DATE')
    if buildid and len(buildid) != 14:
        print('Ignoring invalid MOZ_BUILD_DATE: %s' % buildid, file=sys.stderr)
        buildid = None
    if not buildid:
        buildid = datetime.now().strftime('%Y%m%d%H%M%S')
    output.write("#define MOZ_BUILDID %s\n" % buildid)


def get_program_output(*command):
    try:
        with open(os.devnull) as stderr:
            return subprocess.check_output(command, stderr=stderr)
    except:
        return ''


def get_hg_info(workdir):
    repo = get_program_output('hg', '-R', workdir, 'path', 'default')
    if repo:
        repo = repo.strip()
        if repo.startswith('ssh://'):
            repo = 'https://' + repo[6:]
        repo = repo.rstrip('/')

    changeset = get_hg_changeset(workdir)

    return repo, changeset


def get_hg_changeset(path):
    return get_program_output('hg', '-R', path, 'parent', '--template={node}')

def get_info_from_sourcestamp(sourcestamp_path):
    """Read the repository and changelog information from the sourcestamp
    file. This assumes that the file exists and returns the results as a list
    (either strings or None in case of error).
    """

    # Load the content of the file.
    lines = None
    with open(sourcestamp_path) as f:
        lines = f.read().splitlines()

    # Parse the repo and the changeset. The sourcestamp file is supposed to
    # contain two lines: the first is the build id and the second is the source
    # URL.
    if len(lines) != 2 or not lines[1].startswith('http'):
        # Just return if the file doesn't contain what we expect.
        return None, None

    # Return the repo and the changeset.
    return lines[1].split('/rev/')

def source_repo_header(output):
    # We allow the source repo and changeset to be specified via the
    # environment (see configure)
    import buildconfig
    repo = buildconfig.substs.get('MOZ_SOURCE_REPO')
    changeset = buildconfig.substs.get('MOZ_SOURCE_CHANGESET')
    source = ''

    if not repo:
        sourcestamp_path = os.path.join(buildconfig.topsrcdir, SOURCESTAMP_FILENAME)
        if os.path.exists(os.path.join(buildconfig.topsrcdir, '.hg')):
            repo, changeset = get_hg_info(buildconfig.topsrcdir)
        elif os.path.exists(sourcestamp_path):
            repo, changeset = get_info_from_sourcestamp(sourcestamp_path)
    elif not changeset:
        changeset = get_hg_changeset(buildconfig.topsrcdir)
        if not changeset:
            raise Exception('could not resolve changeset; '
                            'try setting MOZ_SOURCE_CHANGESET')

    if changeset:
        output.write('#define MOZ_SOURCE_STAMP %s\n' % changeset)

    if repo and buildconfig.substs.get('MOZ_INCLUDE_SOURCE_INFO'):
        source = '%s/rev/%s' % (repo, changeset)
        output.write('#define MOZ_SOURCE_REPO %s\n' % repo)
        output.write('#define MOZ_SOURCE_URL %s\n' % source)


def main(args):
    if (len(args)):
        func = globals().get(args[0])
        if func:
            return func(sys.stdout, *args[1:])


if __name__ == '__main__':
    sys.exit(main(sys.argv[1:]))