# 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/.

"""
Pull a specified revision of chromium from SVN.

Usage: python pull-chromium.py <topsrcdir> <chromiumtree> <revision>

You will have to set up a Chromium tree before running this step. See
http://dev.chromium.org/developers/how-tos/get-the-code for details about
doing this efficiently.
"""

import os
import sys
from shutil import rmtree
from subprocess import check_call

topsrcdir, chromiumtree, rev = sys.argv[1:]

if not os.path.exists(os.path.join(topsrcdir, "client.py")):
    print >> sys.stderr, "Incorrect topsrcdir"
    sys.exit(1)

if not os.path.exists(os.path.join(chromiumtree, "src/DEPS")):
    print >> sys.stderr, "Incorrect chromium directory, missing DEPS"
    sys.exit(1)

check_call(["gclient", "sync", "--force", "--revision=src@%s" % rev], cwd=chromiumtree)

chromiumsrc = os.path.join(topsrcdir, "ipc/chromium/src")
os.path.exists(chromiumsrc) and rmtree(chromiumsrc)


def doexport(svnpath):
    localpath = os.path.join(chromiumsrc, svnpath)
    os.makedirs(os.path.dirname(localpath))
    check_call(
        [
            "svn",
            "export",
            "-r",
            "BASE",
            os.path.join(chromiumtree, "src", svnpath),
            localpath,
        ]
    )


doexport("base")
doexport("chrome/common")
doexport("build/build_config.h")
doexport("testing/gtest/include")
doexport("third_party/libevent")