githubclone

#!/bin/zsh
NAME=githubclone
VERSION=2.0.0
GIT_CMD="clone"
GIT_REPO=""
GIT_OUT=""
GIT_FULL_COMMAND=("")
NOCONFIRM=false

showHelp()
{
cat <<- EOF
    Usage: $NAME [-hvy] <command> <username>( |/)<repository> [<destination>]

        -y, --noconfirm  do not ask for any confirmation
        -h, --help       print help document
        -v, --version    print script version

    Examples:
        $NAME -y Electron7-7 HelpfulShellScripts
        $NAME Electron7-7/HelpfulShellScripts ./some_shell_scripts

    $NAME v$VERSION
EOF
}

realpathCheck()
{
    realpath --version >/dev/null 2>&1 && return 0

cat <<- EOF
    [WARNING]: /usr/bin/realpath not found

    An alternative method of normalizing filesystem paths will be used, instead.
    This alternative method should work fine but doesn't resolve soft links, so keep
    that in mind if you see this warning message appear.

    :3
EOF
    return -1
}

FillVariables()
{
    if [[ "$1" =~ '/' ]]; then
        GIT_REPO="$1"
        shift
    else
        GIT_REPO="$1/$2"
        shift 2
    fi

    if [[ -n "$1" ]]; then
        realpathCheck && GIT_OUT="$(realpath -s $1)" || GIT_OUT=$(cd "$1"; pwd)
    else
        GIT_OUT="$(pwd)/${GIT_REPO##*/}"
    fi

    [[ -e "$GIT_OUT" ]] && { printf "[WARNING]: Output directory already exists! Appending repository name to output.\n"; GIT_OUT+="/${GIT_REPO##*/}" }
}

RunCommand()
{
    sleep .05
    printf "Executing command: $GIT_FULL_COMMAND\n"
    sleep .2
    "${GIT_FULL_COMMAND[@]}"
    exit 0
}

ChangeOutput()
{
    sleep .05
    read "OUTPUT_DIR?Enter new output directory: "
    realpathCheck && GIT_OUT="$(realpath -s $OUTPUT_DIR)" || GIT_OUT=$(cd "$OUTPUT_DIR"; pwd)
    [[ -e "$GIT_OUT" ]] && { printf "[WARNING]: Output directory already exists! Appending repository name to output.\n"; GIT_OUT+="/${GIT_REPO##*/}" }

    printf ":: New output directory:\n\t$OUTPUT_DIR\n"
}

ChangeRepo()
{
    printf ":: Valid repository syntaxes:\n\tusername/repository\n\tusername repository\n\n"
    sleep .05
    read "REPO?Enter new repository: "
    OLD_REPO_OUT="${GIT_REPO##*/}"
    [[ $REPO =~ '/' ]] && GIT_REPO="$REPO" || GIT_REPO="${REPO/ //}"
    printf ":: New repository:\n\t$GIT_REPO\n\n"
    sleep .05
    read "CONFIRM?Change output directory name to match the repository name? [Y/n] "
    sleep .05
    [[ "$CONFIRM" =~ ^[Yy]$ || -z "$CONFIRM" ]] && { GIT_OUT=${GIT_OUT/$OLD_REPO_OUT/${GIT_REPO##*/}}; printf ":: New output directory:\n\t$GIT_OUT\n" }
}

ChoiceLoop()
{
    sleep .05
    GIT_FULL_COMMAND=(git "$GIT_CMD" "https://github.com/$GIT_REPO" "$GIT_OUT")
    printf ":: Command to be run:\n\t\"$GIT_FULL_COMMAND\"\n"
    printf ":: Options:\n\t1) Run command  2) Change output  3) Change repository  4) Cancel\n\n"
    read "CHOICE?Make a selection (default=1): "
    case "$CHOICE" in
        1|)
            RunCommand
            ;;
        2)
            ChangeOutput
            ;;
        3)
            ChangeRepo
            ;;
        4)
            printf "Exiting!\n"
            sleep .1
            exit -1
            ;;
        *)
            printf "Unknown choice: \"$CHOICE\"\n"
            sleep .05
            ;;
    esac
    ChoiceLoop
}

OPTIONS=$(getopt -l "help,version,noconfirm" -o "hvy" -a -- "$@")
eval set -- "$OPTIONS"

while true
do
    case "$1" in
        -h|--help)
            showHelp
            exit 0
            ;;
        -v|--version)
            printf "$NAME $VERSION\n"
            exit 0
            ;;
        -y|--noconfirm)
            NOCONFIRM=true
            ;;
        --)
            [[ -z "$2" ]] && { showHelp; exit 1 }
            shift
            FillVariables "$@"
            ChoiceLoop
            exit 0
            ;;
    esac
    shift
done