Create a new git branch name and print it out

git-branch.sh

#! /bin/bash

# Exit if any command fails.
set -e

# Create a new git branch name and print it out
# author: Oluwaseun Olorunsola
# url: https://github.com/triple0t
# gist: https://gist.github.com/triple0t/cd2853f3d73c2ce3ea05de294ccea619
# version: 1.0.1
#
# Installation:
# 1. Use `chmod u+x git-branch.sh` to set the file as executable. e.g. `chmod u+x git-branch.sh`
# 2. Add the script to your $PATH. One method of doing that:
# `cp git-branch.sh` /usr/local/bin/git-branch` e.g. `cp git-branch.sh /usr/local/bin/git-branch`
# 3. Restart terminal session e.g source ~
#
# Usage:
# git-branch 'feat' 'this is my branch name'
# args: 
# 1: branch prefix: this can be any of fix/feat/chore/refactor/test etc
# 2: branch name. Note remember to add the quote. e.g 'this is my branch name'
# 3: option -s to switch to the new branch or option -c to copy branch name to clipboard
# e.g git-branch 'feat' 'this is my branch name' -s
# or e.g git-branch 'feat' 'this is my branch name' -c

DEFAULT_BRANCH_PREFIX='fix'
OPTION_SWITCH_TO_BRANCH='-s'
OPTION_COPY_TO_CLIPBOARD='-c'

toLowerCase() {
    local lower_case="$(echo $1 | tr '[A-Z]' '[a-z]')"
    echo $lower_case
}

mailpoetCommands() {
    # check if we are in mailpoet free git repo
    local OUTPUT=$(git remote get-url origin | grep -E -iwo 'mailpoet\/mailpoet?(\.git)?$')
    if [[ -n $OUTPUT ]]; then
        
        if [[ -d "${PWD}/mailpoet" ]]; then
            # using new structure
            cd "${PWD}/mailpoet"
            ./do compile:all
            cd ..
        else
            ./do compile:all
        fi
    fi
}

AfterGitCheckoutCustomCommands() {
    # run the mailpoet repo commands
    mailpoetCommands
}

createGitBranch() {
    echo "Creating $2"

    local type=$(toLowerCase "$1")
    local name=$(toLowerCase "$2")
    local option="$3"

    local without_special_characters="${name//[\":\'()\{\}%$]/}"            # replace special characters with empty
    local branch_name="$type/${without_special_characters//[ |\/]/-}"       # replace empty space or / with -

    echo $branch_name

    if [[ $option = $OPTION_COPY_TO_CLIPBOARD ]]; then
        echo $branch_name | pbcopy
        echo "Copied to clipboard";
    fi

    if [[ $option = $OPTION_SWITCH_TO_BRANCH ]] && [[ $(git rev-parse --is-inside-work-tree) = true ]]; then
        git checkout -b $branch_name
        AfterGitCheckoutCustomCommands
    fi
}


if [[ $# -eq 0 ]] || [[ $# -gt 3 ]]; then
    echo "Error: you need to supply a branch name"
    echo "e.g. git-branch feat 'my JIRA ticket name' -s (This will create the branch and switch to it)"
    echo "or"
    echo "e.g. git-branch feat 'my JIRA ticket name' -c (This will copy the branch name to clipboard)"
    exit 1
elif [[ $# -eq 3 ]]; then
    # full number of args supplied
    createGitBranch "$1" "$2" $3
elif [[ $# -eq 2 ]]; then
    # a mini check for right params here
    second=$(toLowerCase "$2")

    if [[ $second = $OPTION_SWITCH_TO_BRANCH ]]; then
        createGitBranch $DEFAULT_BRANCH_PREFIX "$1" $OPTION_SWITCH_TO_BRANCH
    elif [[ $second = $OPTION_COPY_TO_CLIPBOARD ]]; then
        createGitBranch $DEFAULT_BRANCH_PREFIX "$1" $OPTION_COPY_TO_CLIPBOARD
    else
        createGitBranch "$1" "$2"
    fi
else 
    createGitBranch $DEFAULT_BRANCH_PREFIX "$1"
fi