fonteditor-core
Version:
fonts (ttf, woff, woff2, eot, svg, otf) parse, write, transform, glyph adjust.
234 lines (223 loc) • 6.92 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.clone = clone;
exports.curry = curry;
exports.debounce = debounce;
exports.equals = equals;
exports.generic = generic;
exports.isArray = isArray;
exports.isDate = isDate;
exports.isEmptyObject = isEmptyObject;
exports.isFunction = isFunction;
exports.isObject = isObject;
exports.isString = isString;
exports.overwrite = overwrite;
exports.throttle = throttle;
function _typeof(o) { "@babel/helpers - typeof"; return _typeof = "function" == typeof Symbol && "symbol" == typeof Symbol.iterator ? function (o) { return typeof o; } : function (o) { return o && "function" == typeof Symbol && o.constructor === Symbol && o !== Symbol.prototype ? "symbol" : typeof o; }, _typeof(o); }
/**
* @file 语言相关函数
* @author mengke01(kekee000@gmail.com)
*/
function isArray(obj) {
return obj != null && toString.call(obj).slice(8, -1) === 'Array';
}
function isObject(obj) {
return obj != null && toString.call(obj).slice(8, -1) === 'Object';
}
function isString(obj) {
return obj != null && toString.call(obj).slice(8, -1) === 'String';
}
function isFunction(obj) {
return obj != null && toString.call(obj).slice(8, -1) === 'Function';
}
function isDate(obj) {
return obj != null && toString.call(obj).slice(8, -1) === 'Date';
}
function isEmptyObject(object) {
for (var name in object) {
// eslint-disable-next-line no-prototype-builtins
if (object.hasOwnProperty(name)) {
return false;
}
}
return true;
}
/**
* 为函数提前绑定前置参数（柯里化）
*
* @see http://en.wikipedia.org/wiki/Currying
* @param {Function} fn 要绑定的函数
* @param {...Array} cargs cargs
* @return {Function}
*/
function curry(fn) {
for (var _len = arguments.length, cargs = new Array(_len > 1 ? _len - 1 : 0), _key = 1; _key < _len; _key++) {
cargs[_key - 1] = arguments[_key];
}
return function () {
for (var _len2 = arguments.length, rargs = new Array(_len2), _key2 = 0; _key2 < _len2; _key2++) {
rargs[_key2] = arguments[_key2];
}
var args = cargs.concat(rargs);
// eslint-disable-next-line no-invalid-this
return fn.apply(this, args);
};
}
/**
* 方法静态化, 反绑定、延迟绑定
*
* @param {Function} method 待静态化的方法
* @return {Function} 静态化包装后方法
*/
function generic(method) {
return function () {
for (var _len3 = arguments.length, fargs = new Array(_len3), _key3 = 0; _key3 < _len3; _key3++) {
fargs[_key3] = arguments[_key3];
}
return Function.call.apply(method, fargs);
};
}
/**
* 设置覆盖相关的属性值
*
* @param {Object} thisObj 覆盖对象
* @param {Object} thatObj 值对象
* @param {Array.<string>} fields 字段
* @return {Object} thisObj
*/
function overwrite(thisObj, thatObj, fields) {
if (!thatObj) {
return thisObj;
}
// 这里`fields`未指定则仅overwrite自身可枚举的字段，指定`fields`则不做限制
fields = fields || Object.keys(thatObj);
fields.forEach(function (field) {
// 拷贝对象
if (thisObj[field] && _typeof(thisObj[field]) === 'object' && thatObj[field] && _typeof(thatObj[field]) === 'object') {
overwrite(thisObj[field], thatObj[field]);
} else {
thisObj[field] = thatObj[field];
}
});
return thisObj;
}
/**
* 深复制对象，仅复制数据
*
* @param {Object} source 源数据
* @return {Object} 复制的数据
*/
function clone(source) {
if (!source || _typeof(source) !== 'object') {
return source;
}
var cloned = source;
if (isArray(source)) {
cloned = source.slice().map(clone);
} else if (isObject(source) && 'isPrototypeOf' in source) {
cloned = {};
for (var _i = 0, _Object$keys = Object.keys(source); _i < _Object$keys.length; _i++) {
var key = _Object$keys[_i];
cloned[key] = clone(source[key]);
}
}
return cloned;
}
// Returns a function, that, when invoked, will only be triggered at most once
// during a given window of time.
// @see underscore.js
function throttle(func, wait) {
var context;
var args;
var timeout;
var result;
var previous = 0;
var later = function later() {
previous = new Date();
timeout = null;
result = func.apply(context, args);
};
return function () {
var now = new Date();
var remaining = wait - (now - previous);
// eslint-disable-next-line no-invalid-this
context = this;
if (remaining <= 0) {
clearTimeout(timeout);
timeout = null;
previous = now;
for (var _len4 = arguments.length, args = new Array(_len4), _key4 = 0; _key4 < _len4; _key4++) {
args[_key4] = arguments[_key4];
}
result = func.apply(context, args);
} else if (!timeout) {
timeout = setTimeout(later, remaining);
}
return result;
};
}
// Returns a function, that, as long as it continues to be invoked, will not
// be triggered. The function will be called after it stops being called for
// N milliseconds. If `immediate` is passed, trigger the function on the
// leading edge, instead of the trailing.
// @see underscore.js
function debounce(func, wait, immediate) {
var timeout;
var result;
return function () {
for (var _len5 = arguments.length, args = new Array(_len5), _key5 = 0; _key5 < _len5; _key5++) {
args[_key5] = arguments[_key5];
}
// eslint-disable-next-line no-invalid-this
var context = this;
var later = function later() {
timeout = null;
if (!immediate) {
result = func.apply(context, args);
}
};
var callNow = immediate && !timeout;
clearTimeout(timeout);
timeout = setTimeout(later, wait);
if (callNow) {
result = func.apply(context, args);
}
return result;
};
}
/**
* 判断两个对象的字段是否相等
*
* @param {Object} thisObj 要比较的对象
* @param {Object} thatObj 参考对象
* @param {Array} fields 指定字段
* @return {boolean} 是否相等
*/
function equals(thisObj, thatObj, fields) {
if (thisObj === thatObj) {
return true;
}
if (thisObj == null && thatObj == null) {
return true;
}
if (thisObj == null && thatObj != null || thisObj != null && thatObj == null) {
return false;
}
// 这里`fields`未指定则仅overwrite自身可枚举的字段，指定`fields`则不做限制
fields = fields || (_typeof(thisObj) === 'object' ? Object.keys(thisObj) : []);
if (!fields.length) {
return thisObj === thatObj;
}
var equal = true;
for (var i = 0, l = fields.length, field; equal && i < l; i++) {
field = fields[i];
if (thisObj[field] && _typeof(thisObj[field]) === 'object' && thatObj[field] && _typeof(thatObj[field]) === 'object') {
equal = equal && equals(thisObj[field], thatObj[field]);
} else {
equal = equal && thisObj[field] === thatObj[field];
}
}
return equal;
}