Helpful bash additions

.banner

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.bash_aliases

# Helpful bash aliases
#
# Paste this into `~/.bash_aliases`:

alias ..="cd .."
alias ...="cd ../.."
alias ....="cd ../../../"
alias .....="cd ../../../.."
alias ~="cd"

# alias to reload bashrc after changes
alias rebash="source ~/.bashrc"

alias g="git"
alias gt="git"

.bashrc-banner

# Show welcome banner

function show_banner {
    local output=$(cat ~/.banner)
    echo -e "$COLOR_Y$output$COLOR_RESET"
    echo ""
}

show_banner

.bashrc-partial-history-search

## partial history search (https://askubuntu.com/a/475614/204815)
bind '"\e[A":history-search-backward'
bind '"\e[B":history-search-forward'

.bashrc-prompt

# Prompt with git status

# regular colors
COLOR_K="\033[0;30m"    # black
COLOR_R="\033[0;31m"    # red
COLOR_G="\033[0;32m"    # green
COLOR_Y="\033[0;33m"    # yellow
COLOR_B="\033[0;34m"    # blue
COLOR_M="\033[0;35m"    # magenta
COLOR_C="\033[0;36m"    # cyan
COLOR_W="\033[0;37m"    # white

# emphasized (bolded) colors
COLOR_BK="\033[1;30m"
COLOR_BR="\033[1;31m"
COLOR_BG="\033[1;32m"
COLOR_BY="\033[1;33m"
COLOR_BB="\033[1;34m"
COLOR_BM="\033[1;35m"
COLOR_BC="\033[1;36m"
COLOR_BW="\033[1;37m"

# reset
COLOR_RESET="\033[00m"

function git_prompt_status {
    local index=$(git status --porcelain 2> /dev/null)
    local status=""

    local red_flag="$COLOR_R⚑$COLOR_RESET "
    local yellow_flag="$COLOR_Y⚑$COLOR_RESET "
    local green_flag="$COLOR_G⚑$COLOR_RESET "

    # conflicted
    if $(echo "$index" | grep '^UU ' &> /dev/null); then
        status="$red_flag$status"
    fi

    # work tree only
    if $(echo "$index" | grep '^.[MD] ' &> /dev/null); then
        status="$yellow_flag$status"
    elif $(echo "$index" | grep '^?? ' &> /dev/null); then
        status="$yellow_flag$status"
    fi

    # indexed
    if $(echo "$index" | grep '^[AMDR]. ' &> /dev/null); then
        status="$green_flag$status"
    fi

    # remove last space
    status=$(echo -ne $status | sed -E "s/\s$//g")

    echo -ne $status
}

function git_prompt {
    (git root > /dev/null 2>&1)
    # check output. if zero, we have a git repo
    if [ "$?" -eq "0" ]; then
        local repo_name="$(git currentbranch 2> /dev/null)"
        echo -e " on ${COLOR_M}${repo_name}${COLOR_RESET}$(git_prompt_status)"
    else
        echo ""
    fi
}

PS1="\${debian_chroot:+(\$debian_chroot)}${COLOR_BG}\u$COLOR_RESET:$COLOR_BB\w$COLOR_RESET\$(git_prompt)\n$ "