git-submodule-status

git-submodule-status

#!/usr/bin/env bash

## constants ##
readonly USE_ANSI_COLOR=$( ([[ "$GBS_USE_ANSI_COLOR" =~ ^[01]$ ]] && echo -n "$GBS_USE_ANSI_COLOR") ||
    ([[ "$CFG_USE_ANSI_COLOR" =~ ^[01]$ ]] && echo -n "$CFG_USE_ANSI_COLOR") ||
    echo -n '1')

readonly CBLUE=$( (($USE_ANSI_COLOR)) && echo '\033[1;34m')
readonly CTHINBLUE=$( (($USE_ANSI_COLOR)) && echo '\e[0;34m')
readonly CEND=$( (($USE_ANSI_COLOR)) && echo '\033[0m')

## functions ##
Init() {
    N=1
    RECURSIVE=false

    readonly SUBMODULES="$(git submodule status | sed -e "s/^[+\ ][^\ ]*\ //" -e s/\ .*$//)"
    readonly SUBMODULES_RECURSIVE="$(git submodule status --recursive | sed -e "s/^[+\ ][^\ ]*\ //" -e s/\ .*$//)"
}

Help() {
    echo "Usage: submodule-status [ -n N ] [ -s | --submodule SUBMODULE ] [ -h | --help ]"
    exit 2
}

GetArgs() {
    SHORT_ARGS="hrn:s:"
    LONG_ARGS="submodule:,recursive,help"
    OPTS=$(getopt -a -n submodule-status --options "$SHORT_ARGS" --longoptions "$LONG_ARGS" -- "$@")
    eval set -- "$OPTS"

    while :; do
        case "$1" in
        -s | --submodule)
            readonly SUBMODULE_FILTER="$2"
            shift 2
            ;;
        -r | --recursive)
            RECURSIVE=true
            shift 1
            ;;
        -n)
            N="$2"
            shift 2
            ;;
        -h | --help)
            Help
            ;;
        --)
            shift
            break
            ;;
        *)
            echo "Unexpected option: $1"
            Help
            ;;
        esac
    done

}

PrintStatus() {
    [[ $RECURSIVE == true ]] && SUBS=$SUBMODULES_RECURSIVE || SUBS=$SUBMODULES
    for submodule in $SUBS; do
        sub_prefix="${submodule%/*}/"
        sub_name="${submodule##*/}"
        if [[ -z "$SUBMODULE_FILTER" || $sub_name == $SUBMODULE_FILTER ]]; then
            echo -e "$CTHINBLUE$sub_prefix$CBLUE$sub_name$CEND"
            echo -e "$(git -C $submodule olog -$N | sed 's/^/\t/')\n"
        fi
    done
}

## main ##
Init
GetArgs $*
PrintStatus