crshini (シェルで書かれたiniファイルを解析する関数)

gistfile1.txt

#!/usr/bin/env bash

set -eu

_crshini_msg_err(){ echo "[libcrshini] Error ${*}" >&2; }
_crshini_msg_inf(){ echo "[libcrshini]  Info ${*}" >&1; }
_crshini_msg_wrn(){ echo "[libcrshini]  Warn ${*}" >&2; }
_crshini_msg_dbg(){ 
    if [[ "${_crshini_debug-false}" = true ]]; then
        echo "[libcrshini] Debug ${*}" >&2
    fi
}

# Get index number from string
# _crshini_index_from_str string "${array[@]}"
_crshini_index_from_str(){
    local __string_to_find="${1}" __index
    shift 1
    local __array=("${@}")
    for __index in $(seq 0 "$(( "${#__array[@]}" - 1 ))"); do
        [[ "${__array["${__index}"]}" = "${__string_to_find}" ]] && echo "${__index}"
    done
    return 0
}

# --get command
# _crshini_get file [section] [param]
_crshini_get(){
    local _crshini_get_fileline=() _crshini_get_file="${1}"
    readarray -t _crshini_get_fileline < "${_crshini_get_file}"
    local _crshini_get_section="${2-""}"  _crshini_get_param="${3-""}" __line
    if [[ -z "${_crshini_get_section}" ]]; then
        for  __line in "${_crshini_get_fileline[@]}"; do
            [[ "${__line}" = "["*"]" ]] && echo "${__line#[%]}"
        done
    else
        for __line in "${_crshini_get_fileline[@]}"; do
            case "${__line}" in
                "[${_crshini_get_section}]")
                    _in_section=true
                    continue
                    ;;
                "["*"]")
                    _in_section=false
                    continue
                    ;;
                "" | "#"*)
                    continue
                    ;;
            esac
            if [[ "${_in_section}" = true ]]; then
                if [[ -z "${_crshini_get_param}" ]]; then
                    echo "${__line%%=*}"
                elif [[ "${__line%%=*}" = "${_crshini_get_param}" ]]; then
                    echo "${__line##*=}"
                fi
            fi
        done
    fi
    return 0
}

# --set command
# _crshini_set file section [param] [value]
_crshini_set(){
    local _crshini_set_fileline=() _crshini_set_file="${1}"
    readarray -t _crshini_set_fileline < "${_crshini_set_file}"
    local _crshini_set_section="${2}" _crshini_set_param="${3-""}"  _crshini_set_value="${4-""}"
    local __line
    local _crshini_set_newsection=false

    # Copy
    local _crshini_set_modline
    readarray -t _crshini_set_sectionlist < <(_crshini_get "${_crshini_set_file}")
    readarray -t _crshini_set_paramlist < <(_crshini_get "${_crshini_set_file}" "${_crshini_set_section}")

    # Find section
    if ! printf "%s\n" "${_crshini_set_sectionlist[@]}" | grep -x "\[${_crshini_set_section}\]" 1> /dev/null 2>&1; then
        _crshini_set_newsection=true
    fi

    # Set section
    if [[ "${_crshini_set_newsection}" = true ]]; then
        _crshini_set_fileline+=("[${_crshini_set_section}]")
        _crshini_set_sectionlist+=("${_crshini_set_section}")
    fi

    # Set param

    # 指定されたセクションの最後の行数を取得
    _crshini_set_section_last="$(
        if (( "${#_crshini_set_paramlist[@]}" == 0 )); then
            _crshini_index_from_str "[${_crshini_set_section}]" "${_crshini_set_fileline[@]}"
        else
            for __line in $( seq 0 $(( "${#_crshini_set_fileline[@]}" - 1 )) ); do
                if [[ "${_crshini_set_fileline[${__line}]}" = "${_crshini_set_paramlist[-1]}"*"="*"$(_crshini_get "${_crshini_set_file}" "${_crshini_set_section}" "${_crshini_set_paramlist[-1]}")" ]]; then
                    echo "${__line}"
                    exit 0
                fi
            done
            echo "$(( "${#_crshini_set_fileline[@]}" - 1 ))"
        fi
    )"
    
    for __line in $( seq 0 $(( "${#_crshini_set_fileline[@]}" )) ); do
        _crshini_msg_dbg "${__line}"
        if ! (( __line == $(( _crshini_set_section_last + 1 )) )); then
            if [[ -n "${_crshini_set_fileline[${__line}]+SET}" ]]; then
                _crshini_set_modline+=("${_crshini_set_fileline[${__line}]}")
            fi
        else
            _crshini_set_modline+=("${_crshini_set_param}=${_crshini_set_value}" "")
        fi
    done

    # Output
    printf "%s\n" "${_crshini_set_modline[@]}"

}