Color current git branch in prompt

colorize_git_ps1.bash

# Color the current git branch in prompt
# red     -> master branch, take care!
# blue    -> just a normal branch
# green   -> dev branch
# cyan    -> feature branch
# magenta -> fix branch

function __colorize_git_ps1 () {
  local branch=$(__git_ps1 "%s")
  if [ -n "$branch" ]; then
    local color="34" # blue
    
    if [[ $branch == master* ]]; then
      color="31" # Red
    fi
    if [[ $branch == dev* ]]; then
      color="32" # Green
    fi
    if [[ $branch == features* ]]; then
      color="36" # Cyan
    fi
    if [[ $branch == fix* ]]; then
      color="35" # Light Red
    fi

    printf "[\e[${color}m${branch}\e[0m]"
  fi
}

GIT_PS1_SHOWDIRTYSTATE=t
PS1='\w$(__colorize_git_ps1)\$ '