@pefish/js-node-assist/lib/string.js

assistance tool of node

"use strict";
var __importDefault = (this && this.__importDefault) || function (mod) {
    return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.Calculator = exports.RoundingMode = void 0;
const bignumber_js_1 = __importDefault(require("bignumber.js"));
const array_1 = __importDefault(require("./array"));
const buffer_1 = __importDefault(require("./buffer"));
// 进制计算的结果都要带上相应前缀 二进制0b 八进制0o 十六进制0x
var RoundingMode;
(function (RoundingMode) {
    RoundingMode[RoundingMode["ROUND_UP"] = 0] = "ROUND_UP";
    RoundingMode[RoundingMode["ROUND_DOWN"] = 1] = "ROUND_DOWN";
    RoundingMode[RoundingMode["ROUND_CEIL"] = 2] = "ROUND_CEIL";
    RoundingMode[RoundingMode["ROUND_FLOOR"] = 3] = "ROUND_FLOOR";
    RoundingMode[RoundingMode["ROUND_HALFUP"] = 4] = "ROUND_HALFUP";
    RoundingMode[RoundingMode["ROUND_HALFDOWN"] = 5] = "ROUND_HALFDOWN";
    RoundingMode[RoundingMode["ROUND_HALFEVEN"] = 6] = "ROUND_HALFEVEN";
    RoundingMode[RoundingMode["ROUND_HALFCEIL"] = 7] = "ROUND_HALFCEIL";
    RoundingMode[RoundingMode["ROUND_HALFFLOOR"] = 8] = "ROUND_HALFFLOOR";
    RoundingMode[RoundingMode["EUCLID"] = 9] = "EUCLID";
})(RoundingMode || (exports.RoundingMode = RoundingMode = {}));
class Calculator {
    constructor(data = `0`) {
        this.data = data.toString();
    }
    toString() {
        return this.data;
    }
    /**
     * 加
     * @param val
     * @returns {any}
     */
    add(val) {
        val = val.toString();
        const BN = bignumber_js_1.default.clone({
            EXPONENTIAL_AT: 1e9,
        });
        const num1 = new BN(this.data);
        return new Calculator(num1.plus(val));
    }
    /**
     * 乘以10的几次方
     * @param num
     */
    shiftedBy(num) {
        const BN = bignumber_js_1.default.clone({
            EXPONENTIAL_AT: 1e9,
        });
        const num1 = new BN(this.data);
        return new Calculator(num1.shiftedBy(new Calculator(num.toString()).toNumber()));
    }
    unShiftedBy(num) {
        const BN = bignumber_js_1.default.clone({
            EXPONENTIAL_AT: 1e9,
        });
        const num1 = new BN(this.data);
        return new Calculator(num1.shiftedBy(new Calculator(num.toString()).negated().toNumber()));
    }
    /**
     * 取相反数
     * @returns {string}
     */
    negated() {
        const BN = bignumber_js_1.default.clone({
            EXPONENTIAL_AT: 1e9,
        });
        const num1 = new BN(this.data);
        return new Calculator(num1.negated());
    }
    /**
     * 减
     * @param val
     * @returns {any}
     */
    sub(val) {
        val = val.toString();
        const BN = bignumber_js_1.default.clone({
            EXPONENTIAL_AT: 1e9,
        });
        const num1 = new BN(this.data);
        return new Calculator(num1.minus(val).toString());
    }
    /**
     * 乘
     * @param val
     * @returns {any}
     */
    multi(val) {
        val = val.toString();
        const BN = bignumber_js_1.default.clone({
            EXPONENTIAL_AT: 1e9,
        });
        const num1 = new BN(this.data);
        return new Calculator(num1.times(val).toString());
    }
    /**
     * 乘方
     * @param val
     * @returns {any}
     */
    pow(val) {
        const BN = bignumber_js_1.default.clone({
            EXPONENTIAL_AT: 1e9,
        });
        const num1 = new BN(this.data);
        return new Calculator(num1.exponentiatedBy(new Calculator(val.toString()).toNumber()).toString());
    }
    /**
     * 除
     * @param val
     * @returns {string}
     */
    div(val) {
        val = val.toString();
        const BN = bignumber_js_1.default.clone({
            EXPONENTIAL_AT: 1e9,
        });
        const num1 = new BN(this.data);
        return new Calculator(num1.div(val).toString());
    }
    /**
     * 求余
     * @param val
     * @returns {string}
     */
    mod(val) {
        val = val.toString();
        const BN = bignumber_js_1.default.clone({
            EXPONENTIAL_AT: 1e9,
        });
        const num1 = new BN(this.data);
        return new Calculator(num1.mod(val).toString());
    }
    /**
     * 开根号
     * @returns {string}
     */
    sqrt() {
        const BN = bignumber_js_1.default.clone({
            EXPONENTIAL_AT: 1e9,
        });
        const num1 = new BN(this.data);
        return new Calculator(num1.sqrt().toString());
    }
    /**
     * 是否大于
     * @param val
     * @returns {boolean}
     */
    gt(val) {
        val = val.toString();
        const num1 = new bignumber_js_1.default(this.data);
        return num1.comparedTo(val) === 1;
    }
    /**
     * 大于或等于
     * @param val
     * @returns {boolean}
     */
    gte(val) {
        val = val.toString();
        const num1 = new bignumber_js_1.default(this.data);
        const result = num1.comparedTo(val);
        return result === 1 || result === 0;
    }
    /**
     * 是否小于
     * @param val
     * @returns {boolean}
     */
    lt(val) {
        val = val.toString();
        const num1 = new bignumber_js_1.default(this.data);
        return num1.comparedTo(val) === -1;
    }
    /**
     * 小于或等于
     * @param val
     * @returns {boolean}
     */
    lte(val) {
        val = val.toString();
        const num1 = new bignumber_js_1.default(this.data);
        const result = num1.comparedTo(val);
        return result === -1 || result === 0;
    }
    /**
     * 是否相等
     * @param val
     * @returns {boolean}
     */
    eq(val) {
        val = val.toString();
        const num1 = new bignumber_js_1.default(this.data);
        return num1.comparedTo(val) === 0;
    }
    /**
     * 保留小数点后几位。默认小数部分最后不带0
     * @param decimalRemain
     * @param remainMethod {number}
     * @returns {string}
     */
    remainDecimal(decimalRemain, remainMethod = RoundingMode.ROUND_HALFUP, withZero = false) {
        const BN = bignumber_js_1.default.clone({
            EXPONENTIAL_AT: 1e9,
        });
        const num1 = new BN(this.data);
        let result = num1.toFixed(decimalRemain, remainMethod);
        if (result.indexOf(".") !== -1 && withZero === false) {
            // 是小数
            while (true) {
                const temp = StringUtil.removeLastStr(result, "0");
                if (result === temp) {
                    // 说明上面无0可去了
                    if (result.endsWith(".")) {
                        result = result.substr(0, result.length - 1);
                    }
                    return new Calculator(result);
                }
                result = temp;
            }
        }
        return new Calculator(result);
    }
    /**
     * 取绝对值
     * @returns {string}
     */
    abs() {
        const BN = bignumber_js_1.default.clone({
            EXPONENTIAL_AT: 1e9,
        });
        const num = new BN(this.data);
        return new Calculator(num.abs());
    }
    /**
     * 直接取整
     * @returns {Number}
     */
    toInt() {
        return parseInt(this.data);
    }
    /**
     * 转换为数值
     * @returns {Number}
     */
    toNumber() {
        const BN = bignumber_js_1.default.clone({
            EXPONENTIAL_AT: 1e9,
        });
        const num = new BN(this.data);
        return num.toNumber();
    }
    /**
     * 转换成BigNumber对象
     * @returns {BigNumber}
     */
    toBigNumber() {
        const BN = bignumber_js_1.default.clone({
            EXPONENTIAL_AT: 1e9,
        });
        return new BN(this.data);
    }
    /**
     * 转换成 BigInt 对象
     * @returns {BigInt}
     */
    toBigInt() {
        return BigInt(this.data);
    }
    /**
     * 转换为二进制字符串
     * @returns {string}
     */
    toBinString() {
        const BN = bignumber_js_1.default.clone({
            EXPONENTIAL_AT: 1e9,
        });
        const num = new BN(this.data);
        return new Calculator("0b" + num.toString(2));
    }
    /**
     * 转换为八进制字符串
     * @returns {string}
     */
    toOctString() {
        const BN = bignumber_js_1.default.clone({
            EXPONENTIAL_AT: 1e9,
        });
        const num = new BN(this.data);
        return new Calculator("0o" + num.toString(8));
    }
    /**
     * 转十进制字符串
     * @returns {number}
     */
    toDecimalString() {
        const BN = bignumber_js_1.default.clone({
            EXPONENTIAL_AT: 1e9,
        });
        const num = new BN(this.data);
        return new Calculator(num.toString(10));
    }
    /**
     * 转换为十六进制字符串
     * @returns {string}
     */
    toHexString() {
        const BN = bignumber_js_1.default.clone({
            EXPONENTIAL_AT: 1e9,
        });
        const num = new BN(this.data);
        return new Calculator("0x" + num.toString(16));
    }
    end() {
        return this.data;
    }
}
exports.Calculator = Calculator;
class StringUtil {
    // 支持"0x12"这种十六进制字串
    static start(data) {
        canCastBigNumber(data);
        return new Calculator(data);
    }
    // 字符串处理
    /**
     * 移除开头几位字符串
     * @param num
     * @returns {Array}
     */
    static removeFirst(src, num) {
        return src.substring(num, src.length);
    }
    /**
     * 获取小数部分的个数
     */
    static decimalCount(src) {
        canCastBigNumber(src);
        return src.split(".")[1].length;
    }
    /**
     * 加千分号
     * @returns {string}
     */
    static addThousandSign(src) {
        canCastBigNumber(src);
        const parts = src.split(".");
        parts[0] = parts[0].replace(/\B(?=(\d{3})+(?!\d))/g, ",");
        return parts[1] === "" ? parts[0] : parts.join(".");
    }
    /**
     * 移除千分号
     * @returns {string}
     */
    static removeThousandSign(src) {
        canCastBigNumber(src);
        return src.replace(new RegExp(",", "g"), "");
    }
    /**
     * hex string转换为number
     * @returns {number}
     */
    static hexToNumber(src) {
        let temp = src;
        if (!temp.startsWith("0x")) {
            temp = "0x" + temp;
        }
        canCastBigNumber(temp);
        const BN = bignumber_js_1.default.clone({
            EXPONENTIAL_AT: 1e9,
        });
        const num = new BN(temp);
        return num.toNumber();
    }
    /**
     * '190' --> 'BE'
     * @returns {string}
     */
    static numberStrToHex(src) {
        const number = new Calculator(src).toNumber();
        return number.toString(16).toUpperCase();
    }
    /**
     * 判断此值用于计算时是否具有精度问题
     */
    static hasPrecisionIssue(src) {
        canCastBigNumber(src);
        return new Calculator(src).gt("9007199254740992");
    }
    /**
     * 移除最后几位字符串
     * @param num
     * @returns {string}
     */
    static removeLast(src, num) {
        return src.substring(0, src.length - num);
    }
    /**
     * 获取开头几位
     * @param num
     * @returns {string}
     */
    static getFirst(src, num) {
        return src.substring(0, num);
    }
    /**
     * 获取最后几位
     * @param num
     * @returns {string}
     */
    static getLast(src, num) {
        return src.substring(src.length - num, src.length);
    }
    /**
     * 全部替换(只能简单替换字符串)
     * @param regStr
     * @param replaceStr
     * @returns {string}
     */
    static replaceAll(src, regStr, replaceStr) {
        return src.replace(new RegExp(regStr, "gm"), replaceStr);
    }
    /**
     * 从字符串中分类出指定区间的内容
     * @param splitStr1
     * @param splitStr2
     * @returns {{}}
     */
    static classify(src, splitStr1, splitStr2) {
        const results = [];
        const regStr = `${splitStr1}(.*?)${splitStr2}`;
        const targets = this.findAll(src, regStr);
        for (let i = 0; i < targets.length; i++) {
            if (i === 0) {
                results.push({
                    name: src.substring(0, targets[i].index),
                    is: false,
                    index: results.length,
                });
            }
            else {
                results.push({
                    name: src.substring(targets[i - 1].index + targets[i - 1].outputFull.length, targets[i].index),
                    is: false,
                    index: results.length,
                });
            }
            results.push({
                name: targets[i]["output"],
                is: true,
                index: results.length,
            });
            if (i === targets.length - 1) {
                results.push({
                    name: src.substring(targets[i]["index"] + targets[i]["outputFull"].length, src.length),
                    is: false,
                    index: results.length,
                });
            }
        }
        return results;
    }
    static findAll(src, regStr) {
        const reg = new RegExp(regStr, "g"); //作用是能够对正则表达式进行编译，被编译过的正则在使用的时候效率会更高，适合于对一个正则多次调用的情况下
        let results = [];
        let a;
        while ((a = reg.exec(src))) {
            //数组中第0个元素是匹配的子字符串，第二个元素是正则中的第一个子分组匹配的结果（如果有子分组，即正则中存在用圆括号括起来的分组），第三个是正则中第二个子分组匹配的结果（如果有第二个子分组）
            results.push({
                outputFull: a[0],
                output: a[1],
                index: a["index"],
                input: a["input"],
            });
        }
        return results;
    }
    /**
     * 十六进制字符串转化为Buffer。与Buffer.toHexString相反
     * @returns {Array}
     */
    static hexToBuffer(src) {
        let temp = src;
        if (temp.startsWith("0x")) {
            temp = temp.substring(2, temp.length);
        }
        // 长度奇数前面加0
        if (temp.length % 2 !== 0) {
            temp = "0" + temp;
        }
        return Buffer.from ? Buffer.from(temp, "hex") : new Buffer(temp, `hex`);
    }
    /**
     * 普通字符串转buffer
     * @returns {Buffer}
     */
    static toUtf8Buffer(src) {
        return Buffer.from ? Buffer.from(src) : new Buffer(src);
    }
    /**
     * 十六进制字符串转化为十进制字符串
     * @returns {number|*}
     */
    static hexToDecimalString(src) {
        let temp = src;
        if (!temp.startsWith("0x")) {
            temp = "0x" + temp;
        }
        canCastBigNumber(temp);
        const BN = bignumber_js_1.default.clone({
            EXPONENTIAL_AT: 1e9,
        });
        const num = new BN(temp);
        return num.toString(10);
    }
    /**
     * 检查是否是严格的hex数据
     * @returns {boolean}
     */
    static isStrictHexString(src) {
        return /^(-)?0x[0-9a-f]*$/i.test(src);
    }
    /**
     * 清空hex字符串左边或右边的00
     * @param typeStr {string} left/right/both
     * @returns {string | void | *} 结果不带0x
     */
    static clearHexZeroZero(src, typeStr) {
        let hex = src.replace(/^0x/i, "");
        if (typeStr === "left") {
            hex = hex.replace(/^(?:00)*/, "");
        }
        else if (typeStr === "right") {
            hex = hex.split("").reverse().join("");
            hex = hex.replace(/^(?:00)*/, "");
            hex = hex.split("").reverse().join("");
        }
        else if (typeStr === "both") {
            hex = hex.replace(/^(?:00)*/, "");
            hex = hex.split("").reverse().join("");
            hex = hex.replace(/^(?:00)*/, "");
            hex = hex.split("").reverse().join("");
        }
        return hex;
    }
    /**
     * 移除尾随的0
     */
    static removeTrailingZeros(src) {
        const BN = bignumber_js_1.default.clone({
            EXPONENTIAL_AT: 1e9,
        });
        const num1 = new BN(parseFloat(src));
        return num1.toString();
    }
    static toArray(src, eleLen, arrLen) {
        if (eleLen !== undefined && arrLen === undefined) {
            const num = src.length % eleLen === 0
                ? parseInt((src.length / eleLen).toString())
                : parseInt((src.length / eleLen).toString()) + 1;
            const newArrays = [];
            for (let i = 0; i < num; i++) {
                const arr = src.slice(eleLen * i, eleLen * (i + 1));
                if (arr.length > 0) {
                    newArrays.push(arr);
                }
            }
            return newArrays;
        }
        else if (eleLen === undefined && arrLen !== undefined) {
            const newArrays = [];
            const num = parseInt((src.length / arrLen).toString());
            for (let i = 0; i < arrLen; i++) {
                const arr = src.slice(num * i, num * (i + 1));
                if (arr.length > 0) {
                    newArrays.push(arr);
                }
            }
            if (num * arrLen < src.length) {
                newArrays[newArrays.length - 1] = newArrays[newArrays.length - 1].concat(src.slice(num * arrLen, src.length));
            }
            return newArrays;
        }
        else {
            throw new Error("eleLen and arrLen must only one to be set!!");
        }
    }
    static hexStrToBase64(src) {
        return Buffer.from(src, "hex").toString("base64");
    }
    static base64ToHexStr(src, prefix = true) {
        return buffer_1.default.toHexString(Buffer.from(src, "base64"), prefix);
    }
    static strToBase64(src) {
        return Buffer.from(src).toString("base64");
    }
    static base64ToStr(src) {
        return Buffer.from(src, "base64").toString();
    }
    static removeLastEnter(src) {
        if (src.endsWith("\r\n")) {
            return this.removeLast(src, 2);
        }
        if (src.endsWith("\n")) {
            return this.removeLast(src, 1);
        }
        return src;
    }
    /**
     * 移除最后一段字符串
     */
    static removeLastStr(src, str) {
        if (!src.endsWith(str)) {
            return src;
        }
        return src.substring(0, src.length - str.length);
    }
    /**
     * 移除开头一段字符串
     */
    static removeFirstStr(src, str) {
        if (!src.startsWith(str)) {
            return src;
        }
        return src.substring(str.length, src.length);
    }
    /**
     * 移除字符串最后一段。
     * @param str
     */
    static removeLastByStr(src, str) {
        const arr = src.split(str);
        if (arr.length === 1) {
            return src;
        }
        return array_1.default.removeLastOne(arr).join(str);
    }
    static removeFirstByStr(src, str) {
        const arr = src.split(str);
        if (arr.length === 1) {
            return src;
        }
        return array_1.default.removeFirstOne(arr).join(str);
    }
    static toNoScientificString(src) {
        const BN = bignumber_js_1.default.clone({
            EXPONENTIAL_AT: 1e9,
        });
        const num1 = new BN(src);
        return num1.toString();
    }
    static canCastNumber(src) {
        return !isNaN(Number(src));
    }
    static utf8HexStringToString(src) {
        return this.hexToBuffer(src).toString("utf8");
    }
    static toUtf8HexString(src, prefix = true) {
        return buffer_1.default.toHexString(this.toUtf8Buffer(src), prefix);
    }
    static toUtf8Uint8Array(src) {
        return new TextEncoder().encode(src);
    }
    static toPretty(src) {
        return format(src, "\t");
    }
}
exports.default = StringUtil;
function canCastBigNumber(value) {
    try {
        const _ = new bignumber_js_1.default(value.toString());
    }
    catch (err) {
        throw new Error(`<${value.toString()}> can not cast to bignumber`);
    }
}
function format(data, indentChar, indentBase) {
    indentChar = indentChar ? indentChar : "\t";
    indentBase = indentBase ? indentBase : "";
    let formattedJSON = "";
    let dataObject = undefined;
    try {
        dataObject = JSON.parse(data);
    }
    catch (Error) {
        throw new TypeError("data parameter is not a valid JSON string !");
    }
    let dataIsArray = JSONtypeOf(dataObject) == "array";
    let dataIsObject = JSONtypeOf(dataObject) == "object";
    // OPEN
    if (dataIsArray) {
        if (data.length == 0)
            // Test empty array case
            return "[]";
        formattedJSON = "[";
    }
    else if (dataIsObject) {
        let objectsCount = 0;
        for (let _ in dataObject) {
            objectsCount++;
            break;
        }
        if (objectsCount == 0)
            // Test empty object case
            return "{}";
        formattedJSON = "{";
    }
    else {
        return data;
    }
    // CONTENT
    let objectsCount = 0;
    let keys = Object.keys(dataObject);
    for (let keyID = 0; keyID < keys.length; ++keyID) {
        if (objectsCount > 0)
            formattedJSON += ",";
        if (dataIsArray)
            formattedJSON += `\n${indentBase}${indentChar}`;
        else
            formattedJSON += `\n${indentBase}${indentChar}"${keys[keyID]}": `;
        switch (JSONtypeOf(dataObject[keys[keyID]])) {
            case "array":
            case "object":
                formattedJSON += format(JSON.stringify(dataObject[keys[keyID]]), indentChar, indentBase + indentChar);
                break;
            case "number":
                formattedJSON += dataObject[keys[keyID]].toString();
                break;
            case "null":
                formattedJSON += "null";
                break;
            case "string":
                formattedJSON += `"${dataObject[keys[keyID]]}"`;
                break;
            case "boolean":
                formattedJSON += dataObject[keys[keyID]];
                break;
        }
        objectsCount++;
    }
    // CLOSE
    if (dataIsArray)
        formattedJSON += `\n${indentBase}]`;
    else
        formattedJSON += `\n${indentBase}}`;
    return formattedJSON;
}
function JSONtypeOf(obj) {
    let typeOf = typeof obj;
    if (typeOf == "object") {
        if (obj === null)
            return "null";
        if (Array.isArray(obj))
            return "array";
        return "object";
    }
    return typeOf;
}
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