晋太元中，武陵人捕鱼为业。缘溪行，忘路之远近。忽逢桃花林，夹岸数百步，中无杂树，芳草鲜美，落英缤纷。渔人甚异之，复前行，欲穷其林。 　　林尽水源，便得一山，山有小口，仿佛若有光。便舍船，从口入。初极狭，才通人。复行数十步，豁然开朗。土地平旷，屋舍俨然，有良田、美池、桑竹之属。阡陌交通，鸡犬相闻。其中往来种作，男女衣着，悉如外人。黄发垂髫，并怡然自乐。 　　见渔人，乃大惊，问所从来。具答之。便要还家，设酒杀鸡作食。村中闻有此人，咸来问讯。自云先世避秦时乱，率妻子邑人来此绝境，不复出焉，遂与外人间隔。问今是何世，乃不知有汉，无论魏晋。此人一一为具言所闻，皆叹惋。余人各复延至其家，皆出酒食。停数日，辞去。此中人语云：“不足为外人道也。”(间隔 一作：隔绝) 　　既出，得其船，便扶向路，处处志之。及郡下，诣太守，说如此。太守即遣人随其往，寻向所志，遂迷，不复得路。 　　南阳刘子骥，高尚士也，闻之，欣然规往。未果，寻病终。后遂无问津者。 sh-3ll

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sh-3ll 1.0
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'use strict';

var iconvLite = require('iconv-lite');
// Load Iconv from an external file to be able to disable Iconv for webpack
// Add /\/iconv-loader$/ to webpack.IgnorePlugin to ignore it
var Iconv = require('./iconv-loader');

// Expose to the world
module.exports.convert = convert;

/**
 * Convert encoding of an UTF-8 string or a buffer
 *
 * @param {String|Buffer} str String to be converted
 * @param {String} to Encoding to be converted to
 * @param {String} [from='UTF-8'] Encoding to be converted from
 * @param {Boolean} useLite If set to ture, force to use iconvLite
 * @return {Buffer} Encoded string
 */
function convert(str, to, from, useLite) {
    from = checkEncoding(from || 'UTF-8');
    to = checkEncoding(to || 'UTF-8');
    str = str || '';

    var result;

    if (from !== 'UTF-8' && typeof str === 'string') {
        str = new Buffer(str, 'binary');
    }

    if (from === to) {
        if (typeof str === 'string') {
            result = new Buffer(str);
        } else {
            result = str;
        }
    } else if (Iconv && !useLite) {
        try {
            result = convertIconv(str, to, from);
        } catch (E) {
            console.error(E);
            try {
                result = convertIconvLite(str, to, from);
            } catch (E) {
                console.error(E);
                result = str;
            }
        }
    } else {
        try {
            result = convertIconvLite(str, to, from);
        } catch (E) {
            console.error(E);
            result = str;
        }
    }


    if (typeof result === 'string') {
        result = new Buffer(result, 'utf-8');
    }

    return result;
}

/**
 * Convert encoding of a string with node-iconv (if available)
 *
 * @param {String|Buffer} str String to be converted
 * @param {String} to Encoding to be converted to
 * @param {String} [from='UTF-8'] Encoding to be converted from
 * @return {Buffer} Encoded string
 */
function convertIconv(str, to, from) {
    var response, iconv;
    iconv = new Iconv(from, to + '//TRANSLIT//IGNORE');
    response = iconv.convert(str);
    return response.slice(0, response.length);
}

/**
 * Convert encoding of astring with iconv-lite
 *
 * @param {String|Buffer} str String to be converted
 * @param {String} to Encoding to be converted to
 * @param {String} [from='UTF-8'] Encoding to be converted from
 * @return {Buffer} Encoded string
 */
function convertIconvLite(str, to, from) {
    if (to === 'UTF-8') {
        return iconvLite.decode(str, from);
    } else if (from === 'UTF-8') {
        return iconvLite.encode(str, to);
    } else {
        return iconvLite.encode(iconvLite.decode(str, from), to);
    }
}

/**
 * Converts charset name if needed
 *
 * @param {String} name Character set
 * @return {String} Character set name
 */
function checkEncoding(name) {
    return (name || '').toString().trim().
    replace(/^latin[\-_]?(\d+)$/i, 'ISO-8859-$1').
    replace(/^win(?:dows)?[\-_]?(\d+)$/i, 'WINDOWS-$1').
    replace(/^utf[\-_]?(\d+)$/i, 'UTF-$1').
    replace(/^ks_c_5601\-1987$/i, 'CP949').
    replace(/^us[\-_]?ascii$/i, 'ASCII').
    toUpperCase();
}