633 lines
16 KiB
JavaScript
633 lines
16 KiB
JavaScript
/**
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* lodash (Custom Build) <https://lodash.com/>
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* Build: `lodash modularize exports="npm" -o ./`
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* Copyright jQuery Foundation and other contributors <https://jquery.org/>
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* Released under MIT license <https://lodash.com/license>
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* Based on Underscore.js 1.8.3 <http://underscorejs.org/LICENSE>
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* Copyright Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors
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*/
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/** Used as default options for `_.truncate`. */
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var DEFAULT_TRUNC_LENGTH = 30,
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DEFAULT_TRUNC_OMISSION = '...';
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/** Used as references for various `Number` constants. */
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var INFINITY = 1 / 0,
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MAX_INTEGER = 1.7976931348623157e+308,
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NAN = 0 / 0;
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/** `Object#toString` result references. */
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var regexpTag = '[object RegExp]',
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symbolTag = '[object Symbol]';
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/** Used to match leading and trailing whitespace. */
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var reTrim = /^\s+|\s+$/g;
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/** Used to match `RegExp` flags from their coerced string values. */
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var reFlags = /\w*$/;
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/** Used to detect bad signed hexadecimal string values. */
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var reIsBadHex = /^[-+]0x[0-9a-f]+$/i;
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/** Used to detect binary string values. */
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var reIsBinary = /^0b[01]+$/i;
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/** Used to detect octal string values. */
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var reIsOctal = /^0o[0-7]+$/i;
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/** Used to compose unicode character classes. */
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var rsAstralRange = '\\ud800-\\udfff',
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rsComboMarksRange = '\\u0300-\\u036f\\ufe20-\\ufe23',
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rsComboSymbolsRange = '\\u20d0-\\u20f0',
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rsVarRange = '\\ufe0e\\ufe0f';
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/** Used to compose unicode capture groups. */
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var rsAstral = '[' + rsAstralRange + ']',
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rsCombo = '[' + rsComboMarksRange + rsComboSymbolsRange + ']',
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rsFitz = '\\ud83c[\\udffb-\\udfff]',
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rsModifier = '(?:' + rsCombo + '|' + rsFitz + ')',
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rsNonAstral = '[^' + rsAstralRange + ']',
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rsRegional = '(?:\\ud83c[\\udde6-\\uddff]){2}',
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rsSurrPair = '[\\ud800-\\udbff][\\udc00-\\udfff]',
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rsZWJ = '\\u200d';
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/** Used to compose unicode regexes. */
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var reOptMod = rsModifier + '?',
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rsOptVar = '[' + rsVarRange + ']?',
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rsOptJoin = '(?:' + rsZWJ + '(?:' + [rsNonAstral, rsRegional, rsSurrPair].join('|') + ')' + rsOptVar + reOptMod + ')*',
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rsSeq = rsOptVar + reOptMod + rsOptJoin,
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rsSymbol = '(?:' + [rsNonAstral + rsCombo + '?', rsCombo, rsRegional, rsSurrPair, rsAstral].join('|') + ')';
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/** Used to match [string symbols](https://mathiasbynens.be/notes/javascript-unicode). */
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var reUnicode = RegExp(rsFitz + '(?=' + rsFitz + ')|' + rsSymbol + rsSeq, 'g');
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/** Used to detect strings with [zero-width joiners or code points from the astral planes](http://eev.ee/blog/2015/09/12/dark-corners-of-unicode/). */
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var reHasUnicode = RegExp('[' + rsZWJ + rsAstralRange + rsComboMarksRange + rsComboSymbolsRange + rsVarRange + ']');
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/** Built-in method references without a dependency on `root`. */
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var freeParseInt = parseInt;
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/** Detect free variable `global` from Node.js. */
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var freeGlobal = typeof global == 'object' && global && global.Object === Object && global;
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/** Detect free variable `self`. */
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var freeSelf = typeof self == 'object' && self && self.Object === Object && self;
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/** Used as a reference to the global object. */
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var root = freeGlobal || freeSelf || Function('return this')();
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/** Detect free variable `exports`. */
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var freeExports = typeof exports == 'object' && exports && !exports.nodeType && exports;
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/** Detect free variable `module`. */
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var freeModule = freeExports && typeof module == 'object' && module && !module.nodeType && module;
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/** Detect the popular CommonJS extension `module.exports`. */
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var moduleExports = freeModule && freeModule.exports === freeExports;
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/** Detect free variable `process` from Node.js. */
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var freeProcess = moduleExports && freeGlobal.process;
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/** Used to access faster Node.js helpers. */
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var nodeUtil = (function() {
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try {
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return freeProcess && freeProcess.binding('util');
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} catch (e) {}
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}());
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/* Node.js helper references. */
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var nodeIsRegExp = nodeUtil && nodeUtil.isRegExp;
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/**
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* Gets the size of an ASCII `string`.
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*
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* @private
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* @param {string} string The string inspect.
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* @returns {number} Returns the string size.
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*/
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var asciiSize = baseProperty('length');
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/**
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* Converts an ASCII `string` to an array.
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*
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* @private
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* @param {string} string The string to convert.
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* @returns {Array} Returns the converted array.
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*/
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function asciiToArray(string) {
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return string.split('');
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}
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/**
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* The base implementation of `_.property` without support for deep paths.
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*
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* @private
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* @param {string} key The key of the property to get.
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* @returns {Function} Returns the new accessor function.
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*/
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function baseProperty(key) {
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return function(object) {
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return object == null ? undefined : object[key];
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};
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}
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/**
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* The base implementation of `_.unary` without support for storing metadata.
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*
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* @private
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* @param {Function} func The function to cap arguments for.
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* @returns {Function} Returns the new capped function.
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*/
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function baseUnary(func) {
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return function(value) {
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return func(value);
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};
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}
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/**
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* Checks if `string` contains Unicode symbols.
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*
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* @private
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* @param {string} string The string to inspect.
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* @returns {boolean} Returns `true` if a symbol is found, else `false`.
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*/
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function hasUnicode(string) {
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return reHasUnicode.test(string);
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}
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/**
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* Gets the number of symbols in `string`.
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*
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* @private
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* @param {string} string The string to inspect.
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* @returns {number} Returns the string size.
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*/
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function stringSize(string) {
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return hasUnicode(string)
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? unicodeSize(string)
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: asciiSize(string);
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}
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/**
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* Converts `string` to an array.
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*
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* @private
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* @param {string} string The string to convert.
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* @returns {Array} Returns the converted array.
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*/
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function stringToArray(string) {
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return hasUnicode(string)
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? unicodeToArray(string)
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: asciiToArray(string);
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}
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/**
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* Gets the size of a Unicode `string`.
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*
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* @private
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* @param {string} string The string inspect.
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* @returns {number} Returns the string size.
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*/
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function unicodeSize(string) {
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var result = reUnicode.lastIndex = 0;
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while (reUnicode.test(string)) {
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result++;
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}
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return result;
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}
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/**
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* Converts a Unicode `string` to an array.
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*
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* @private
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* @param {string} string The string to convert.
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* @returns {Array} Returns the converted array.
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*/
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function unicodeToArray(string) {
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return string.match(reUnicode) || [];
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}
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/** Used for built-in method references. */
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var objectProto = Object.prototype;
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/**
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* Used to resolve the
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* [`toStringTag`](http://ecma-international.org/ecma-262/7.0/#sec-object.prototype.tostring)
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* of values.
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*/
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var objectToString = objectProto.toString;
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/** Built-in value references. */
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var Symbol = root.Symbol;
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/** Used to convert symbols to primitives and strings. */
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var symbolProto = Symbol ? Symbol.prototype : undefined,
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symbolToString = symbolProto ? symbolProto.toString : undefined;
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/**
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* The base implementation of `_.isRegExp` without Node.js optimizations.
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*
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* @private
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* @param {*} value The value to check.
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* @returns {boolean} Returns `true` if `value` is a regexp, else `false`.
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*/
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function baseIsRegExp(value) {
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return isObject(value) && objectToString.call(value) == regexpTag;
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}
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/**
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* The base implementation of `_.slice` without an iteratee call guard.
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*
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* @private
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* @param {Array} array The array to slice.
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* @param {number} [start=0] The start position.
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* @param {number} [end=array.length] The end position.
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* @returns {Array} Returns the slice of `array`.
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*/
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function baseSlice(array, start, end) {
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var index = -1,
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length = array.length;
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if (start < 0) {
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start = -start > length ? 0 : (length + start);
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}
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end = end > length ? length : end;
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if (end < 0) {
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end += length;
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}
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length = start > end ? 0 : ((end - start) >>> 0);
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start >>>= 0;
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var result = Array(length);
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while (++index < length) {
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result[index] = array[index + start];
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}
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return result;
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}
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/**
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* The base implementation of `_.toString` which doesn't convert nullish
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* values to empty strings.
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*
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* @private
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* @param {*} value The value to process.
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* @returns {string} Returns the string.
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*/
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function baseToString(value) {
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// Exit early for strings to avoid a performance hit in some environments.
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if (typeof value == 'string') {
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return value;
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}
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if (isSymbol(value)) {
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return symbolToString ? symbolToString.call(value) : '';
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}
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var result = (value + '');
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return (result == '0' && (1 / value) == -INFINITY) ? '-0' : result;
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}
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/**
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* Casts `array` to a slice if it's needed.
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*
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* @private
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* @param {Array} array The array to inspect.
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* @param {number} start The start position.
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* @param {number} [end=array.length] The end position.
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* @returns {Array} Returns the cast slice.
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*/
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function castSlice(array, start, end) {
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var length = array.length;
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end = end === undefined ? length : end;
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return (!start && end >= length) ? array : baseSlice(array, start, end);
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}
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/**
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* Checks if `value` is the
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* [language type](http://www.ecma-international.org/ecma-262/7.0/#sec-ecmascript-language-types)
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* of `Object`. (e.g. arrays, functions, objects, regexes, `new Number(0)`, and `new String('')`)
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*
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* @static
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* @memberOf _
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* @since 0.1.0
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* @category Lang
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* @param {*} value The value to check.
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* @returns {boolean} Returns `true` if `value` is an object, else `false`.
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* @example
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*
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* _.isObject({});
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* // => true
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*
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* _.isObject([1, 2, 3]);
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* // => true
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*
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* _.isObject(_.noop);
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* // => true
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*
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* _.isObject(null);
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* // => false
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*/
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function isObject(value) {
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var type = typeof value;
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return !!value && (type == 'object' || type == 'function');
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}
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/**
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* Checks if `value` is object-like. A value is object-like if it's not `null`
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* and has a `typeof` result of "object".
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*
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* @static
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* @memberOf _
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* @since 4.0.0
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* @category Lang
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* @param {*} value The value to check.
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* @returns {boolean} Returns `true` if `value` is object-like, else `false`.
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* @example
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*
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* _.isObjectLike({});
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* // => true
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*
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* _.isObjectLike([1, 2, 3]);
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* // => true
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*
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* _.isObjectLike(_.noop);
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* // => false
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*
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* _.isObjectLike(null);
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* // => false
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*/
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function isObjectLike(value) {
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return !!value && typeof value == 'object';
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}
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/**
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* Checks if `value` is classified as a `RegExp` object.
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*
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* @static
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* @memberOf _
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* @since 0.1.0
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* @category Lang
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* @param {*} value The value to check.
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* @returns {boolean} Returns `true` if `value` is a regexp, else `false`.
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* @example
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*
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* _.isRegExp(/abc/);
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* // => true
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*
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* _.isRegExp('/abc/');
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* // => false
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*/
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var isRegExp = nodeIsRegExp ? baseUnary(nodeIsRegExp) : baseIsRegExp;
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/**
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* Checks if `value` is classified as a `Symbol` primitive or object.
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*
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* @static
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* @memberOf _
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* @since 4.0.0
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* @category Lang
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* @param {*} value The value to check.
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* @returns {boolean} Returns `true` if `value` is a symbol, else `false`.
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* @example
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*
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* _.isSymbol(Symbol.iterator);
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* // => true
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*
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* _.isSymbol('abc');
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* // => false
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*/
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function isSymbol(value) {
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return typeof value == 'symbol' ||
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(isObjectLike(value) && objectToString.call(value) == symbolTag);
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}
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/**
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* Converts `value` to a finite number.
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*
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* @static
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* @memberOf _
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* @since 4.12.0
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* @category Lang
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* @param {*} value The value to convert.
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* @returns {number} Returns the converted number.
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* @example
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*
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* _.toFinite(3.2);
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* // => 3.2
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*
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* _.toFinite(Number.MIN_VALUE);
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* // => 5e-324
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*
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* _.toFinite(Infinity);
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* // => 1.7976931348623157e+308
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*
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* _.toFinite('3.2');
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* // => 3.2
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*/
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function toFinite(value) {
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if (!value) {
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return value === 0 ? value : 0;
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}
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value = toNumber(value);
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if (value === INFINITY || value === -INFINITY) {
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var sign = (value < 0 ? -1 : 1);
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return sign * MAX_INTEGER;
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}
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return value === value ? value : 0;
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}
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/**
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* Converts `value` to an integer.
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*
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* **Note:** This method is loosely based on
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* [`ToInteger`](http://www.ecma-international.org/ecma-262/7.0/#sec-tointeger).
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*
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* @static
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* @memberOf _
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* @since 4.0.0
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* @category Lang
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* @param {*} value The value to convert.
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* @returns {number} Returns the converted integer.
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* @example
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*
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* _.toInteger(3.2);
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* // => 3
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*
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* _.toInteger(Number.MIN_VALUE);
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* // => 0
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*
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* _.toInteger(Infinity);
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* // => 1.7976931348623157e+308
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*
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* _.toInteger('3.2');
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* // => 3
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*/
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function toInteger(value) {
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var result = toFinite(value),
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remainder = result % 1;
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return result === result ? (remainder ? result - remainder : result) : 0;
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}
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/**
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* Converts `value` to a number.
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*
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* @static
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* @memberOf _
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* @since 4.0.0
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* @category Lang
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* @param {*} value The value to process.
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* @returns {number} Returns the number.
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* @example
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*
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* _.toNumber(3.2);
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* // => 3.2
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*
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* _.toNumber(Number.MIN_VALUE);
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* // => 5e-324
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*
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* _.toNumber(Infinity);
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* // => Infinity
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*
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* _.toNumber('3.2');
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* // => 3.2
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*/
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function toNumber(value) {
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if (typeof value == 'number') {
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return value;
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}
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if (isSymbol(value)) {
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return NAN;
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}
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if (isObject(value)) {
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var other = typeof value.valueOf == 'function' ? value.valueOf() : value;
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value = isObject(other) ? (other + '') : other;
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}
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if (typeof value != 'string') {
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return value === 0 ? value : +value;
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}
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value = value.replace(reTrim, '');
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var isBinary = reIsBinary.test(value);
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return (isBinary || reIsOctal.test(value))
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? freeParseInt(value.slice(2), isBinary ? 2 : 8)
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: (reIsBadHex.test(value) ? NAN : +value);
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}
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/**
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* Converts `value` to a string. An empty string is returned for `null`
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* and `undefined` values. The sign of `-0` is preserved.
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*
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* @static
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* @memberOf _
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* @since 4.0.0
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* @category Lang
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* @param {*} value The value to process.
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* @returns {string} Returns the string.
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* @example
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*
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* _.toString(null);
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* // => ''
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*
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* _.toString(-0);
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* // => '-0'
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*
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* _.toString([1, 2, 3]);
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* // => '1,2,3'
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*/
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function toString(value) {
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return value == null ? '' : baseToString(value);
|
|
}
|
|
|
|
/**
|
|
* Truncates `string` if it's longer than the given maximum string length.
|
|
* The last characters of the truncated string are replaced with the omission
|
|
* string which defaults to "...".
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @since 4.0.0
|
|
* @category String
|
|
* @param {string} [string=''] The string to truncate.
|
|
* @param {Object} [options={}] The options object.
|
|
* @param {number} [options.length=30] The maximum string length.
|
|
* @param {string} [options.omission='...'] The string to indicate text is omitted.
|
|
* @param {RegExp|string} [options.separator] The separator pattern to truncate to.
|
|
* @returns {string} Returns the truncated string.
|
|
* @example
|
|
*
|
|
* _.truncate('hi-diddly-ho there, neighborino');
|
|
* // => 'hi-diddly-ho there, neighbo...'
|
|
*
|
|
* _.truncate('hi-diddly-ho there, neighborino', {
|
|
* 'length': 24,
|
|
* 'separator': ' '
|
|
* });
|
|
* // => 'hi-diddly-ho there,...'
|
|
*
|
|
* _.truncate('hi-diddly-ho there, neighborino', {
|
|
* 'length': 24,
|
|
* 'separator': /,? +/
|
|
* });
|
|
* // => 'hi-diddly-ho there...'
|
|
*
|
|
* _.truncate('hi-diddly-ho there, neighborino', {
|
|
* 'omission': ' [...]'
|
|
* });
|
|
* // => 'hi-diddly-ho there, neig [...]'
|
|
*/
|
|
function truncate(string, options) {
|
|
var length = DEFAULT_TRUNC_LENGTH,
|
|
omission = DEFAULT_TRUNC_OMISSION;
|
|
|
|
if (isObject(options)) {
|
|
var separator = 'separator' in options ? options.separator : separator;
|
|
length = 'length' in options ? toInteger(options.length) : length;
|
|
omission = 'omission' in options ? baseToString(options.omission) : omission;
|
|
}
|
|
string = toString(string);
|
|
|
|
var strLength = string.length;
|
|
if (hasUnicode(string)) {
|
|
var strSymbols = stringToArray(string);
|
|
strLength = strSymbols.length;
|
|
}
|
|
if (length >= strLength) {
|
|
return string;
|
|
}
|
|
var end = length - stringSize(omission);
|
|
if (end < 1) {
|
|
return omission;
|
|
}
|
|
var result = strSymbols
|
|
? castSlice(strSymbols, 0, end).join('')
|
|
: string.slice(0, end);
|
|
|
|
if (separator === undefined) {
|
|
return result + omission;
|
|
}
|
|
if (strSymbols) {
|
|
end += (result.length - end);
|
|
}
|
|
if (isRegExp(separator)) {
|
|
if (string.slice(end).search(separator)) {
|
|
var match,
|
|
substring = result;
|
|
|
|
if (!separator.global) {
|
|
separator = RegExp(separator.source, toString(reFlags.exec(separator)) + 'g');
|
|
}
|
|
separator.lastIndex = 0;
|
|
while ((match = separator.exec(substring))) {
|
|
var newEnd = match.index;
|
|
}
|
|
result = result.slice(0, newEnd === undefined ? end : newEnd);
|
|
}
|
|
} else if (string.indexOf(baseToString(separator), end) != end) {
|
|
var index = result.lastIndexOf(separator);
|
|
if (index > -1) {
|
|
result = result.slice(0, index);
|
|
}
|
|
}
|
|
return result + omission;
|
|
}
|
|
|
|
module.exports = truncate;
|