Custom bash prompt with Git information

prompt

#!/bin/bash

# Add everything below to your .bashrc

multiline_prompt=0
hostinfo=0

__ps1() {
    # colors
    local red='\[\e[1;31m\]'
    local green='\[\e[1;32m\]'
    local yellow='\[\e[1;33m\]'
    local blue='\[\e[1;34m\]'
    local magenta='\[\e[1;35m\]'
    local cyan='\[\e[1;36m\]'
    local white='\[\e[37m\]'
    local reset='\[\e[0m\]'

    local git_status="$(git status 2> /dev/null)"

    local branch_pattern="^(# )?On branch ([^${IFS}]*)"
    if [[ ${git_status} =~ ${branch_pattern} ]]; then
        local branch=${BASH_REMATCH[2]}
    fi

    local hash_pattern="^(# )?HEAD detached at ([^${IFS}]*)"
    if [[ ${git_status} =~ ${hash_pattern} ]]; then
        local hash=${BASH_REMATCH[2]}
    fi

    local modified_pattern="modified:"
    if [[ ${git_status} =~ ${modified_pattern} ]]; then
        local modified_symbol="!"
    fi

    local deleted_pattern="deleted:"
    if [[ ${git_status} =~ ${deleted_pattern} ]]; then
        local deleted_symbol="✘"
    fi

    local untracked_pattern="Untracked files:"
    if [[ ${git_status} =~ ${untracked_pattern} ]]; then
        local untracked_symbol="?"
    fi

    if [[ -n "$deleted_symbol" ]] ||
        [[ -n "$modified_symbol" ]] ||
        [[ -n "$untracked_symbol" ]]; then
        local symbols="$(printf "[%s%s%s]" "$deleted_symbol" "$modified_symbol" "$untracked_symbol")"
    fi

    if [[ -n "$git_status" ]]; then
        local gitinfo="$reset:$yellow$branch$hash$red$symbols$reset"
    fi

    if [[ "$hostinfo" -ne 0 ]]; then
        local host="$red\u$reset@$blue\h$reset:"
    fi

    local prompt="$host$cyan\W$gitinfo$reset"

    if [[ "$multiline_prompt" -ne 0 ]]; then
        PS1="╔ $prompt\n╚ \$ "
    else
        PS1="$prompt\$ "
    fi
}

PROMPT_COMMAND='__ps1'