Submit latest git commit

submit-latest.sh

#!/bin/bash
# Submit latest git commit.
# Usage:
#   submit-latest.sh [topic]
#

# Reset
Color_Off='\033[0m'

# Regular Colors
Color_Red='\033[0;31m'          # Red
Color_Green='\033[0;32m'        # Green
Color_Yellow='\033[0;33m'       # Yellow
Color_Blue='\033[0;34m'         # Blue
Color_Purple='\033[0;35m'       # Purple
Color_Cyan='\033[0;36m'         # Cyan
Color_White='\033[0;37m'        # White

function echo_good {
    echo -e "$Color_Green$1$Color_Off"
}
function echo_bad {
    echo -e "$Color_Red$1$Color_Off"
}
function echo_warn {
    echo -e "$Color_Yellow$1$Color_Off"
}

topic=$1
latest_hash=$(git rev-parse HEAD)
branch=$(git name-rev --name-only HEAD)
remote=$(git config branch.$branch.remote)

function submit_push {
    if [ -z $topic ]; then
        remote_branch=refs/for/$branch
    else
        remote_branch=refs/for/$branch/$topic
    fi

    echo_good "Submit to $remote_branch"
    git push $remote HEAD:$remote_branch
}

ahead=$(git rev-list --count HEAD...gerrit/master)

if [ $ahead -eq 0 ]; then
    echo_good "Up to date, nothing to do"
    exit 0
fi

if [ $ahead -eq 1 ]; then
    echo_good "Has 1 commit, submit $latest_hash"
    submit_push
    exit $?
fi

echo_good "Has $ahead commits, submit lastest commit $latest_hash"

git diff-index --quiet HEAD --;
has_change=$?

if [ $has_change -ne 0 ]; then
    git stash
fi

function clean_up {
    echo_good "Restore working environment"
    git reset --hard $latest_hash
    if [ $has_change -ne 0 ]; then
        git stash pop
    fi
}

echo_good "Pick commit to $remote/$branch"
git reset --hard $remote/$branch
git cherry-pick $latest_hash

if [ $? -ne 0 ]; then
    echo_bad "Cherry pick failed, please submit manually."
    git cherry-pick --abort
    clean_up
    exit 1
fi

submit_push

clean_up