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