Function for git rebase and merge

git_merge.sh

export X_BLUE="\033[0;34m"
export X_BOLD="\033[1m"
export X_CYAN="\033[1;36m"
export X_GREEN="\033[0;32m"
export X_NC="\033[0m"
export X_RED="\033[0;31m"
export X_YELLOW="\033[1;33m"

##
# Function to rebase and merge any feature branch.
# Usage:
# git_merge my_feature_branch into master
# git_merge my_feature_branch master
##
function git_merge () {
    SOURCE=${1:?Source Branch is missing}
    MASTER=${2:?Target Branch is missing}
    [[ ${MASTER} == "into" ]] && MASTER=${3:?Target branch missing}
    printf "${X_CYAN}==> Checkout $MASTER ${X_NC}\n"
    git checkout $MASTER

    printf "${X_CYAN}==> Pull & Rebase $MASTER ${X_NC}\n"
    git pull --rebase || (printf "${X_RED}Failed...${X_NC}\n" && return 1)
    read -p "..«"

    printf "${X_CYAN}==> Checkout $SOURCE ${X_NC}\n"
    git branch -D $SOURCE || printf "${X_YELLOW}Branch not found locally...\n"
    git checkout $SOURCE || (printf "${X_RED}Failed...${X_NC}\n" && return 1)
    printf "${X_CYAN}==> Pull & Rebase $SOURCE ${X_NC}\n"
    git pull origin ${SOURCE} || (printf "${X_RED}Failed...${X_NC}\n" && return 1)
    read -p "..«"

    printf "${X_CYAN}==> Rebase $SOURCE with $MASTER ${X_NC}\n"
    git rebase origin/$MASTER || (printf "${X_RED}Failed...${X_NC}\n" && return 1)
    printf "${X_CYAN}==> Push $SOURCE ${X_NC}\n"
    git push origin $SOURCE -f || (printf "${X_RED}Failed...${X_NC}\n" && return 1)

    printf "${X_CYAN}==> Commits on $SOURCE to be merged. ${X_NC}\n"
    git lg origin/$MASTER..HEAD
    printf "${X_CYAN}:: Needs rebase? ([y]|n): ${X_NC}"
    read doRebase
    [[ $doRebase != "n" ]] && printf "${X_RED}Please rebase & try again...${X_NC}\n" && return 1 || printf "Continuing without rebase...\n"

    printf "${X_CYAN}==> Checkout $MASTER for merging $SOURCE ${X_NC}\n"
    git checkout $MASTER
    printf "${X_CYAN}==> Merging $SOURCE with $MASTER ${X_NC}\n"
    git merge origin/$SOURCE || (printf "${X_RED}Failed...${X_NC}\n" && return 1)
    read -p "..«"

    printf "${X_CYAN}==> Push $MASTER ${X_NC}\n"
    git push origin $MASTER || (printf "${X_RED}Failed...${X_NC}\n" && return 1)

    printf "${X_CYAN}==> Delete $SOURCE? ([y]|n): ${X_NC}"
    read doDelete
    [[ $doDelete != "n" ]] && printf "${X_RED}Deleting $SOURCE Branch...${X_NC}\n" && git push origin :$SOURCE || printf "${X_RED}Skipping Delete...${X_NC}\n"
 
    printf "${X_CYAN}==> END of merge $SOURCE into $MASTER ${X_NC}\n"
}