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65 lines
1.8 KiB
Bash
65 lines
1.8 KiB
Bash
#!/bin/bash
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# Copyright (c) 2012 The Chromium Authors. All rights reserved.
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# Use of this source code is governed by a BSD-style license that can be
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# found in the LICENSE file.
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svn_lkgr=`curl -s http://chromium-status.appspot.com/lkgr`
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if [ $? != 0 -o -z "$svn_lkgr" ]; then
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echo 'Could not get svn lkgr from chromium-status.appspot.com/lkgr'
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exit 1
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fi
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# Run a trivial git-svn command to force it to update the revision cache
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# (which causes spew that might otherwise confuse the next command).
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git svn info > /dev/null
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if [ $? != 0 ]; then
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cat <<EOF 1>&2
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Could not run a trivial git-svn command. You probably need to set up your
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working directory for git-svn, by following these instructions:
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http://code.google.com/p/chromium/wiki/UsingNewGit#Initial_checkout
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EOF
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exit 1
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fi
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git_lkgr=`git svn find-rev r${svn_lkgr}`
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if [ $? != 0 -o -z "$git_lkgr" ]; then
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cat <<EOF 1>&2
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Could not map svn revision ${svn_lkgr} to a git commit.
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You may need to `git fetch` and try again.
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EOF
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exit 1
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fi
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set -o pipefail
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closest_commit=`git rev-list --ancestry-path \
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--grep='SVN changes up to revision [0-9]*' \
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${git_lkgr}..refs/remotes/origin/master | tail -1`
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if [ $? != 0 -o -z "$closest_commit" ]; then
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cat <<EOF 1>&2
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Could not find a blessed git commit (with accurate .DEPS.git and submodules)
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after svn lkgr revision $svn_lkgr.
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EOF
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exit 1
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fi
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closest_svn_commit=`git rev-list -n 1 ${closest_commit}^1`
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if [ $? != 0 -o -z "$closest_svn_commit" ]; then
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cat <<EOF 1>&2
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I am thoroughly confused. Please file a bug report at http://new.crbug.com.
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EOF
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exit 1
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fi
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if [ "${closest_svn_commit}" = "${git_lkgr}" ]; then
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echo "${closest_commit}"
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exit 0
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else
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cat <<EOF 1>&2
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There is no master commit which corresponds exactly to lkgr.
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The closest commit is ${closest_commit}.
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EOF
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exit 1
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fi
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