A minimal bash theme

muffin.theme.bash

#!/usr/bin/env bash

txtblk='\[\e[0;30m\]'  # Black
txtred='\[\e[0;31m\]'  # Red
txtgrn='\[\e[0;32m\]'  # Green
txtylw='\[\e[0;33m\]'  # Yellow
txtblu='\[\e[0;34m\]'  # Blue
txtpur='\[\e[0;35m\]'  # Purple
txtcyn='\[\e[0;36m\]'  # Cyan
txtwht='\[\e[0;37m\]'  # White

bldblk='\[\e[1;30m\]'  # Bold Black
bldred='\[\e[1;31m\]'  # Bold Red
bldgrn='\[\e[1;32m\]'  # Bold Green
bldylw='\[\e[1;33m\]'  # Bold Yellow
bldblu='\[\e[1;34m\]'  # Bold Blue
bldpur='\[\e[1;35m\]'  # Bold Purple
bldcyn='\[\e[1;36m\]'  # Bold Cyan
bldwht='\[\e[1;37m\]'  # Bold White
txtrst='\[\e[0m\]'     # Text Reset


PROMPT_COMMAND=__prompt_command

git_branch() {
    if [[ -n $(git branch 2> /dev/null) ]]; then
        echo "on ${bldcyn}$(git branch 2> /dev/null | sed -e '/^[^*]/d' -e 's/* \(.*\)/\1/')${txtrst}"
    fi
}

__prompt_command() {
    exit="$?"

    if [ $exit != 0 ]; then
        PS1="${bldred}\u"
    else
        PS1="${bldgrn}\u"
    fi
    PS1+="${txtrst} at ${bldblu}\h${txtrst} in ${bldpur}\W${txtrst} $(git_branch)\n${txtwht}» ${txtrst}"
}