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tools: Add a git-svn bootstrap script
codified version of https://wiki.freebsd.org/GitWorkflow/GitSvn#Using_git-svn Approved by: emaste (mentor) Suggested by: Warner Losh (imp) Differential Revision: https://reviews.freebsd.org/D16528
This commit is contained in:
Ben Widawsky
parent
0dbdecfd4f
commit
be223cad78
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=337157
1
.gitattributes
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1
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@ -3,3 +3,4 @@
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*.cpp diff=cpp
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*.hpp diff=cpp
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*.py diff=python
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. svn-properties=svn:executable=tools/tools/git/git-svn-init
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@ -157,3 +157,10 @@ and it will do its thing and leave the tree on the master branch.
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Your tree must be clean to start this, and while it tries to catch
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some failures, not all of them have been allowed for.
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IV. git-svn-init
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git-svn-init is a script that initializes the right git-svn connection as
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outlined in https://wiki.freebsd.org/GitWorkflow/GitSvn. It would be a precursor
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to the script git-svn-rebase. The script contains help, but generally you can
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run the script with no arguments and it will attempt to set up both src and
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ports repositories.
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195
tools/tools/git/git-svn-init
Executable file
195
tools/tools/git/git-svn-init
Executable file
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#!/bin/sh
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# $FreeBSD$
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# SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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#
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# Copyright(c) 2018 Intel Corporation.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions
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# are met:
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# 1. Redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer.
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# 2. Redistributions in binary form must reproduce the above copyright
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# notice, this list of conditions and the following disclaimer in the
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# documentation and/or other materials provided with the distribution.
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#
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# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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# SUCH DAMAGE.
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# This is the codified version of what was/is on the wiki page for using git in
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# your workflow. It sets up proper repositories, with the correct remotes.
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# Environment variables which can be overridden if desired. Not worth
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# parameterizing them.
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GIT_IN_PATH=$(which git)
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GIT=${GIT-${GIT_IN_PATH}}
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GIT_PORTS_REPO=${GIT_PORTS_REPO-git://github.com/freebsd/freebsd-ports.git}
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GIT_SVN_PORTS_ROOT_URI=${GIT_SVN_PORTS_ROOT_URI-svn.freebsd.org/ports}
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GIT_SVN_PORTS_URI=${GIT_SVN_PORTS_URI-repo.freebsd.org/ports}
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GIT_SRC_REPO=${GIT_SRC_REPO-git://github.com/freebsd/freebsd.git}
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GIT_SVN_SRC_ROOT_URI=${GIT_SVN_SRC_ROOT_URI-svn.freebsd.org/base}
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GIT_SVN_SRC_URI=${GIT_SVN_SRC_URI-repo.freebsd.org/base}
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GIT_SVN_PORTS_PUSH_URI=$GIT_SVN_PORTS_URI
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GIT_SVN_SRC_PUSH_URI=$GIT_SVN_SRC_URI
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usage()
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{
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cat <<EOF
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Usage: git-svn-init: [-b base_path] [-n] [-p] [-s]
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git-svn-init will instantiate git repositories for src, and ports and connect
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them to the upstream SVN repository. By default it will attempt to do this for
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both ports and src under freebsd in the current working directory.
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-b Base path for the clone operation (default: freebsd)
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-n Dry run
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-p Exclude ports
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-s Exclude src
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EOF
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}
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clone()
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{
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echo "Cloning ${3}"
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${GIT} clone "$repo" -o upstream "$base"/${3}
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}
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svn_init()
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{
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# init git-svn to point to the subversion repo:
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${GIT} svn init -Thead --rewrite-root=svn+ssh://$1 svn+ssh://$2 .
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# Replace to use upstream instead of the default origin
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# TODO: Do this from git svn init
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${GIT} config svn-remote.svn.fetch head:refs/remotes/upstream/trunk
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# Committers need to use proper URL for dcommit
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${GIT} config svn-remote.svn.pushurl svn+ssh://$3
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}
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svn_check()
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{
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cat <<EOF
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[svn-remote "svn"]
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url = svn+ssh://repo.freebsd.org/base
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rewriteRoot = svn+ssh://svn.freebsd.org/base
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pushurl = svn+ssh://repo.freebsd.org/base
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fetch = head:refs/remotes/upstream/trunk
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EOF
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[ -z ${DRY_RUN} ] && grep -A4 'svn-remote "svn"' .git/config
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}
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svn_connect()
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{
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# Now make a git branch 'trunk' for git-svn to follow. What we want to
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# do it set it to point to the final commit in upstream/svn_head.
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local svn_head_sha=$(git show-ref upstream/svn_head|cut -d" " -f1)
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${GIT} update-ref refs/remotes/upstream/trunk $svn_head_sha # git-svn really needs this branch
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}
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svn_fetch()
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{
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${GIT} svn fetch
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}
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git_pulls()
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{
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# Get pull requests from the repos:
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${GIT} config --add remote.upstream.fetch '+refs/pull/*:refs/remotes/upstream/pull/*'
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${GIT} fetch
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}
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git_checkout()
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{
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# Arrange to have 'master' reference 'trunk'
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${GIT} checkout trunk
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# Delete master
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${GIT} branch -D master
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# Make master really be trunk
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${GIT} checkout -b master trunk
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}
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rebase()
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{
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${GIT} svn rebase
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}
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doit()
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{
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local repo=${1}
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local base=${2}
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if [ "$3" = "src" ] ; then
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local svn_root_uri=$GIT_SVN_SRC_ROOT_URI
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local svn_uri=$GIT_SVN_SRC_URI
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local svn_push_uri=$GIT_SVN_SRC_PUSH_URI
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else
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local svn_root_uri=$GIT_SVN_PORTS_ROOT_URI
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local svn_uri=$GIT_SVN_PORTS_URI
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local svn_push_uri=$GIT_SVN_PORTS_PUSH_URI
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fi
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clone ${repo} ${base} ${3}
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cd "$base"/${3}
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svn_init $svn_root_uri $svn_uri $svn_push_uri
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svn_check $(basename $svn_uri) # get base or ports, not src/ports.
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svn_connect
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svn_fetch
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git_pulls
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git_checkout
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rebase
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cd -
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}
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ports=1
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source=1
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while getopts "hb:nr:sp" opt; do
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case "$opt" in
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b)
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base_path="$OPTARG"
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;;
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n)
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DRY_RUN=1
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;;
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p)
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ports=0
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;;
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s)
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source=0
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;;
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h|*)
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usage
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exit 0
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esac
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done
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if [ ! -z "${DRY_RUN}" ] ; then
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GIT='echo git'
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fi
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if [ "$source" -eq 1 ]; then
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doit ${GIT_SRC_REPO} ${base_path:-freebsd} "src"
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fi
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if [ "$ports" -eq 1 ]; then
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doit ${GIT_PORTS_REPO} ${base_path:-freebsd} "ports"
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fi
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