tarcp.sh

#!/bin/sh

usage() {
    cat <<EOF >&1
Usage: $1 [OPTION].. SRC DSTDIR

Recursively copy SRC to destination directory DSTDIR.

  -f          Create DSTDIR if it does not exist
  -H FORMAT   Use tar format FORMAT (default=pax)

Format for SRC and DSTDIR:

[[user@]hostname:]path

EOF
}

quote() {
    togo="$1"
    printf "'"
    while test -n "$togo"; do
        noq="${togo%%\'*}"
        printf '%s' "$noq"
        if test "$noq" '!=' "$togo"; then
            printf "'%s'" "\\'"
            togo="${togo#*\'}"
        else
            break
        fi
    done
    printf "'"
}

format=pax
sremote=""
dremote=""
force=""

while getopts "hfH:" opt; do
    case "$opt" in
        h)
            usage "$@"
            exit 3
            ;;
        f)
            force=yes
            ;;
        H)
            format="$OPTARG"
            ;;
        \?)
            printf '%s\n' "Invalid option: -$OPTARG" >&2
            usage "$@"
            exit 1
            ;;
    esac
done

shift $((OPTIND-1))

if test $# -lt 2; then
    printf 'No destination specified\n'
    usage "$@"
    exit 2;
fi

src="$1"
dst="$2"

if printf '%s' "$src" |grep -q "[:]"; then
    sremote="${src%:*}"
    src="${src##*:}"
fi

if printf '%s' "$dst" |grep -q "[:]"; then
    dremote="${dst%:*}"
    dst="${dst##*:}"
fi

createCmd="$(printf 'tar --format %s -C %s -c %s' "$(quote "$format")" "$(quote "$(dirname "$src")")" "$(quote "$(basename "$src")")")"
extractCmd="$(printf 'tar -C %s -x' "$(quote "${dst}")")"
if test -n "$force"; then
    extractCmd="$(printf 'mkdir -p %s; %s' "$(quote "$dst")" "$extractCmd")"
fi

{
    if test -z "$sremote"; then
        eval "$createCmd"
    else
        #shellcheck disable=SC2029
        ssh "$sremote" "$createCmd"
    fi
} |
{
    if test -z "$dremote"; then
        eval "$extractCmd";
    else
        # shellcheck disable=SC2029
        ssh "$dremote" "$extractCmd"
    fi
}