エスケープシーケンスを簡単に扱える関数とスクリプト

cecho

#!/usr/bin/env bash

# text [-b/-c color/-g color/-f/-l/]
# -b: 太字, -f: 点滅, -l: 下線, -n: リセット, 
text() {
    local OPTIND OPTARG _arg _textcolor _decotypes="" _bgcolor
    while getopts "c:bflng:" _arg; do
        case "${_arg}" in
            c | g)
                case "${OPTARG}" in
                    "black"  ) [[ "${_arg}" = "c" ]] && _textcolor="30" || _bgcolor="40";;
                    "red"    ) [[ "${_arg}" = "c" ]] && _textcolor="31" || _bgcolor="41";;
                    "green"  ) [[ "${_arg}" = "c" ]] && _textcolor="32" || _bgcolor="42";;
                    "yellow" ) [[ "${_arg}" = "c" ]] && _textcolor="33" || _bgcolor="43";;
                    "blue"   ) [[ "${_arg}" = "c" ]] && _textcolor="34" || _bgcolor="44";;
                    "magenta") [[ "${_arg}" = "c" ]] && _textcolor="35" || _bgcolor="45";;
                    "cyan"   ) [[ "${_arg}" = "c" ]] && _textcolor="36" || _bgcolor="46";;
                    "white"  ) [[ "${_arg}" = "c" ]] && _textcolor="37" || _bgcolor="47";;
                    *        ) return 1                                                 ;;
                esac
                ;;
            b) _decotypes="${_decotypes};1" ;;
            f) _decotypes="${_decotypes};5" ;;
            l) _decotypes="${_decotypes};4" ;;
            n) _decotypes="${_decotypes};0" ;;
            *) msg_error "Wrong use of text function" ;;
        esac
    done
    shift "$((OPTIND - 1))"
    echo -ne "\e[$([[ -v _textcolor ]] && echo -n ";${_textcolor}"; [[ -v _decotypes ]] && echo -n "${_decotypes}"; [[ -v _bgcolor ]] && echo -n ";${_bgcolor}")m${*}\e[m"
}

text "${@}"