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# Copyright 2012 the V8 project authors. All rights reserved.
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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 are
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# * 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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# * Redistributions in binary form must reproduce the above
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# copyright notice, this list of conditions and the following
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# disclaimer in the documentation and/or other materials provided
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# with the distribution.
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# * Neither the name of Google Inc. nor the names of its
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# contributors may be used to endorse or promote products derived
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# from this software without specific prior written permission.
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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# This file contains common function definitions for various other shell
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# scripts in this directory. It is not meant to be executed by itself.
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# Important: before including this file, the following variables must be set:
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# - PERSISTFILE_BASENAME
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TEMP_BRANCH=$BRANCHNAME-temporary-branch-created-by-script
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VERSION_FILE="src/version.cc"
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CHANGELOG_ENTRY_FILE="$PERSISTFILE_BASENAME-changelog-entry"
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PATCH_FILE="$PERSISTFILE_BASENAME-patch"
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COMMITMSG_FILE="$PERSISTFILE_BASENAME-commitmsg"
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TRUNK_REVISION_FILE="$PERSISTFILE_BASENAME-trunkrevision"
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[[ -n "$1" ]] && echo "Error: $1"
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if [[ -z "$ANSWER" || "$ANSWER" == "Y" || "$ANSWER" == "y" ]] ; then
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local MATCH=$(git branch | grep "$1" | awk '{print $NF}' | grep -x $1)
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if [ "$MATCH" == "$1" ] ; then
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confirm "Branch $1 exists, do you want to delete it?"
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if [ $? -eq 0 ] ; then
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git branch -D $1 || die "Deleting branch '$1' failed."
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echo "Branch $1 deleted."
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die "Can't continue. Please delete branch $1 and try again."
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# Persist and restore variables to support canceling/resuming execution
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local FILE="$PERSISTFILE_BASENAME-$VARNAME"
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local VALUE="${!VARNAME}"
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if [ -z "$VALUE" ] ; then
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local FILE="$PERSISTFILE_BASENAME-$VARNAME"
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local VALUE="$(cat $FILE)"
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[[ -z "$VALUE" ]] && die "Variable '$VARNAME' could not be restored."
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if [ "$VALUE" == "__EMPTY__" ] ; then
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eval "$VARNAME=\"$VALUE\""
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[[ -z "${!VARNAME}" ]] && restore "$VARNAME"
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initial_environment_checks() {
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# Cancel if this is not a git checkout.
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|| die "This is not a git checkout, this script won't work for you."
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# Cancel if EDITOR is unset or not executable.
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[[ -n "$EDITOR" && -x "$(which $EDITOR)" ]] \
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|| die "Please set your EDITOR environment variable, you'll need it."
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# Check for a clean workdir.
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[[ -z "$(git status -s -uno)" ]] \
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|| die "Workspace is not clean. Please commit or undo your changes."
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# Persist current branch.
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CURRENT_BRANCH=$(git status -s -b -uno | grep "^##" | awk '{print $2}')
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persist "CURRENT_BRANCH"
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# Fetch unfetched revisions.
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git svn fetch || die "'git svn fetch' failed."
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# Get ahold of a safe temporary branch and check it out.
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if [ "$CURRENT_BRANCH" != "$TEMP_BRANCH" ] ; then
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delete_branch $TEMP_BRANCH
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git checkout -b $TEMP_BRANCH
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# Delete the branch that will be created later if it exists already.
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delete_branch $BRANCHNAME
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restore_if_unset "CURRENT_BRANCH"
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git checkout -f $CURRENT_BRANCH
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[[ "$TEMP_BRANCH" != "$CURRENT_BRANCH" ]] && git branch -D $TEMP_BRANCH
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[[ "$BRANCHNAME" != "$CURRENT_BRANCH" ]] && git branch -D $BRANCHNAME
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# Clean up all temporary files.
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rm -f "$PERSISTFILE_BASENAME"*
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# These two functions take a prefix for the variable names as first argument.
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read_and_persist_version() {
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for v in MAJOR_VERSION MINOR_VERSION BUILD_NUMBER PATCH_LEVEL; do
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VALUE=$(grep "#define $v" "$VERSION_FILE" | awk '{print $NF}')
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eval "$VARNAME=\"$VALUE\""
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restore_version_if_unset() {
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for v in MAJOR MINOR BUILD PATCH; do
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restore_if_unset "$1$v"
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if [ $START_STEP -le $CURRENT_STEP ] ; then
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echo ">>> Step $CURRENT_STEP: Upload for code review."
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echo -n "Please enter the email address of a V8 reviewer for your patch: "
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git cl upload -r "$REVIEWER" --send-mail \
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|| die "'git cl upload' failed, please try again."
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echo "Please wait for an LGTM, then type \"LGTM<Return>\" to commit your \
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change. (If you need to iterate on the patch or double check that it's \
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sane, do so in another shell, but remember to not change the headline of \
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while [ "$ANSWER" != "LGTM" ] ; do
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[[ -n "$ANSWER" ]] && echo "That was not 'LGTM'."
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wait_for_resolving_conflicts() {
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echo "Applying the patch \"$1\" failed. Either type \"ABORT<Return>\", or \
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resolve the conflicts, stage *all* touched files with 'git add', and \
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type \"RESOLVED<Return>\""
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while [ "$ANSWER" != "RESOLVED" ] ; do
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[[ "$ANSWER" == "ABORT" ]] && die "Applying the patch failed."
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[[ -n "$ANSWER" ]] && echo "That was not 'RESOLVED' or 'ABORT'."
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# Takes a file containing the patch to apply as first argument.
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git apply --index --reject $REVERSE_PATCH "$1" || \
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wait_for_resolving_conflicts "$1";