490 lines
12 KiB
JavaScript
490 lines
12 KiB
JavaScript
/* global define */
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(function (root, pluralize) {
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/* istanbul ignore else */
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if (typeof require === 'function' && typeof exports === 'object' && typeof module === 'object') {
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// Node.
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module.exports = pluralize();
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} else if (typeof define === 'function' && define.amd) {
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// AMD, registers as an anonymous module.
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define(function () {
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return pluralize();
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});
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} else {
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// Browser global.
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root.pluralize = pluralize();
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}
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})(this, function () {
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// Rule storage - pluralize and singularize need to be run sequentially,
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// while other rules can be optimized using an object for instant lookups.
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var pluralRules = [];
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var singularRules = [];
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var uncountables = {};
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var irregularPlurals = {};
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var irregularSingles = {};
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/**
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* Sanitize a pluralization rule to a usable regular expression.
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*
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* @param {(RegExp|string)} rule
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* @return {RegExp}
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*/
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function sanitizeRule (rule) {
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if (typeof rule === 'string') {
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return new RegExp('^' + rule + '$', 'i');
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}
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return rule;
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}
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/**
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* Pass in a word token to produce a function that can replicate the case on
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* another word.
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*
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* @param {string} word
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* @param {string} token
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* @return {Function}
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*/
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function restoreCase (word, token) {
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// Tokens are an exact match.
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if (word === token) return token;
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// Upper cased words. E.g. "HELLO".
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if (word === word.toUpperCase()) return token.toUpperCase();
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// Title cased words. E.g. "Title".
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if (word[0] === word[0].toUpperCase()) {
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return token.charAt(0).toUpperCase() + token.substr(1).toLowerCase();
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}
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// Lower cased words. E.g. "test".
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return token.toLowerCase();
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}
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/**
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* Interpolate a regexp string.
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*
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* @param {string} str
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* @param {Array} args
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* @return {string}
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*/
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function interpolate (str, args) {
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return str.replace(/\$(\d{1,2})/g, function (match, index) {
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return args[index] || '';
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});
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}
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/**
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* Replace a word using a rule.
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*
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* @param {string} word
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* @param {Array} rule
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* @return {string}
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*/
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function replace (word, rule) {
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return word.replace(rule[0], function (match, index) {
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var result = interpolate(rule[1], arguments);
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if (match === '') {
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return restoreCase(word[index - 1], result);
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}
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return restoreCase(match, result);
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});
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}
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/**
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* Sanitize a word by passing in the word and sanitization rules.
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*
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* @param {string} token
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* @param {string} word
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* @param {Array} rules
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* @return {string}
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*/
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function sanitizeWord (token, word, rules) {
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// Empty string or doesn't need fixing.
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if (!token.length || uncountables.hasOwnProperty(token)) {
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return word;
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}
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var len = rules.length;
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// Iterate over the sanitization rules and use the first one to match.
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while (len--) {
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var rule = rules[len];
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if (rule[0].test(word)) return replace(word, rule);
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}
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return word;
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}
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/**
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* Replace a word with the updated word.
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*
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* @param {Object} replaceMap
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* @param {Object} keepMap
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* @param {Array} rules
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* @return {Function}
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*/
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function replaceWord (replaceMap, keepMap, rules) {
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return function (word) {
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// Get the correct token and case restoration functions.
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var token = word.toLowerCase();
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// Check against the keep object map.
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if (keepMap.hasOwnProperty(token)) {
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return restoreCase(word, token);
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}
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// Check against the replacement map for a direct word replacement.
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if (replaceMap.hasOwnProperty(token)) {
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return restoreCase(word, replaceMap[token]);
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}
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// Run all the rules against the word.
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return sanitizeWord(token, word, rules);
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};
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}
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/**
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* Check if a word is part of the map.
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*/
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function checkWord (replaceMap, keepMap, rules, bool) {
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return function (word) {
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var token = word.toLowerCase();
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if (keepMap.hasOwnProperty(token)) return true;
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if (replaceMap.hasOwnProperty(token)) return false;
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return sanitizeWord(token, token, rules) === token;
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};
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}
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/**
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* Pluralize or singularize a word based on the passed in count.
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*
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* @param {string} word
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* @param {number} count
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* @param {boolean} inclusive
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* @return {string}
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*/
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function pluralize (word, count, inclusive) {
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var pluralized = count === 1
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? pluralize.singular(word) : pluralize.plural(word);
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return (inclusive ? count + ' ' : '') + pluralized;
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}
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/**
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* Pluralize a word.
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*
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* @type {Function}
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*/
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pluralize.plural = replaceWord(
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irregularSingles, irregularPlurals, pluralRules
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);
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/**
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* Check if a word is plural.
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*
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* @type {Function}
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*/
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pluralize.isPlural = checkWord(
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irregularSingles, irregularPlurals, pluralRules
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);
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/**
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* Singularize a word.
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*
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* @type {Function}
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*/
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pluralize.singular = replaceWord(
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irregularPlurals, irregularSingles, singularRules
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);
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/**
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* Check if a word is singular.
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*
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* @type {Function}
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*/
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pluralize.isSingular = checkWord(
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irregularPlurals, irregularSingles, singularRules
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);
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/**
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* Add a pluralization rule to the collection.
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*
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* @param {(string|RegExp)} rule
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* @param {string} replacement
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*/
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pluralize.addPluralRule = function (rule, replacement) {
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pluralRules.push([sanitizeRule(rule), replacement]);
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};
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/**
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* Add a singularization rule to the collection.
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*
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* @param {(string|RegExp)} rule
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* @param {string} replacement
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*/
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pluralize.addSingularRule = function (rule, replacement) {
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singularRules.push([sanitizeRule(rule), replacement]);
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};
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/**
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* Add an uncountable word rule.
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*
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* @param {(string|RegExp)} word
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*/
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pluralize.addUncountableRule = function (word) {
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if (typeof word === 'string') {
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uncountables[word.toLowerCase()] = true;
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return;
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}
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// Set singular and plural references for the word.
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pluralize.addPluralRule(word, '$0');
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pluralize.addSingularRule(word, '$0');
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};
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/**
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* Add an irregular word definition.
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*
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* @param {string} single
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* @param {string} plural
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*/
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pluralize.addIrregularRule = function (single, plural) {
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plural = plural.toLowerCase();
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single = single.toLowerCase();
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irregularSingles[single] = plural;
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irregularPlurals[plural] = single;
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};
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/**
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* Irregular rules.
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*/
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[
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// Pronouns.
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['I', 'we'],
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['me', 'us'],
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['he', 'they'],
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['she', 'they'],
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['them', 'them'],
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['myself', 'ourselves'],
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['yourself', 'yourselves'],
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['itself', 'themselves'],
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['herself', 'themselves'],
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['himself', 'themselves'],
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['themself', 'themselves'],
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['is', 'are'],
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['was', 'were'],
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['has', 'have'],
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['this', 'these'],
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['that', 'those'],
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// Words ending in with a consonant and `o`.
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['echo', 'echoes'],
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['dingo', 'dingoes'],
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['volcano', 'volcanoes'],
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['tornado', 'tornadoes'],
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['torpedo', 'torpedoes'],
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// Ends with `us`.
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['genus', 'genera'],
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['viscus', 'viscera'],
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// Ends with `ma`.
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['stigma', 'stigmata'],
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['stoma', 'stomata'],
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['dogma', 'dogmata'],
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['lemma', 'lemmata'],
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['schema', 'schemata'],
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['anathema', 'anathemata'],
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// Other irregular rules.
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['ox', 'oxen'],
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['axe', 'axes'],
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['die', 'dice'],
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['yes', 'yeses'],
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['foot', 'feet'],
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['eave', 'eaves'],
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['goose', 'geese'],
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['tooth', 'teeth'],
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['quiz', 'quizzes'],
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['human', 'humans'],
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['proof', 'proofs'],
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['carve', 'carves'],
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['valve', 'valves'],
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['looey', 'looies'],
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['thief', 'thieves'],
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['groove', 'grooves'],
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['pickaxe', 'pickaxes'],
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['whiskey', 'whiskies']
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].forEach(function (rule) {
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return pluralize.addIrregularRule(rule[0], rule[1]);
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});
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/**
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* Pluralization rules.
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*/
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[
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[/s?$/i, 's'],
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[/[^\u0000-\u007F]$/i, '$0'],
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[/([^aeiou]ese)$/i, '$1'],
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[/(ax|test)is$/i, '$1es'],
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[/(alias|[^aou]us|tlas|gas|ris)$/i, '$1es'],
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[/(e[mn]u)s?$/i, '$1s'],
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[/([^l]ias|[aeiou]las|[emjzr]as|[iu]am)$/i, '$1'],
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[/(alumn|syllab|octop|vir|radi|nucle|fung|cact|stimul|termin|bacill|foc|uter|loc|strat)(?:us|i)$/i, '$1i'],
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[/(alumn|alg|vertebr)(?:a|ae)$/i, '$1ae'],
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[/(seraph|cherub)(?:im)?$/i, '$1im'],
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[/(her|at|gr)o$/i, '$1oes'],
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[/(agend|addend|millenni|dat|extrem|bacteri|desiderat|strat|candelabr|errat|ov|symposi|curricul|automat|quor)(?:a|um)$/i, '$1a'],
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[/(apheli|hyperbat|periheli|asyndet|noumen|phenomen|criteri|organ|prolegomen|hedr|automat)(?:a|on)$/i, '$1a'],
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[/sis$/i, 'ses'],
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[/(?:(kni|wi|li)fe|(ar|l|ea|eo|oa|hoo)f)$/i, '$1$2ves'],
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[/([^aeiouy]|qu)y$/i, '$1ies'],
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[/([^ch][ieo][ln])ey$/i, '$1ies'],
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[/(x|ch|ss|sh|zz)$/i, '$1es'],
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[/(matr|cod|mur|sil|vert|ind|append)(?:ix|ex)$/i, '$1ices'],
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[/(m|l)(?:ice|ouse)$/i, '$1ice'],
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[/(pe)(?:rson|ople)$/i, '$1ople'],
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[/(child)(?:ren)?$/i, '$1ren'],
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[/eaux$/i, '$0'],
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[/m[ae]n$/i, 'men'],
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['thou', 'you']
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].forEach(function (rule) {
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return pluralize.addPluralRule(rule[0], rule[1]);
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});
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/**
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* Singularization rules.
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*/
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[
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[/s$/i, ''],
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[/(ss)$/i, '$1'],
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[/(wi|kni|(?:after|half|high|low|mid|non|night|[^\w]|^)li)ves$/i, '$1fe'],
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[/(ar|(?:wo|[ae])l|[eo][ao])ves$/i, '$1f'],
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[/ies$/i, 'y'],
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[/\b([pl]|zomb|(?:neck|cross)?t|coll|faer|food|gen|goon|group|lass|talk|goal|cut)ies$/i, '$1ie'],
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[/\b(mon|smil)ies$/i, '$1ey'],
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[/(m|l)ice$/i, '$1ouse'],
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[/(seraph|cherub)im$/i, '$1'],
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[/(x|ch|ss|sh|zz|tto|go|cho|alias|[^aou]us|tlas|gas|(?:her|at|gr)o|ris)(?:es)?$/i, '$1'],
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[/(analy|ba|diagno|parenthe|progno|synop|the|empha|cri)(?:sis|ses)$/i, '$1sis'],
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[/(movie|twelve|abuse|e[mn]u)s$/i, '$1'],
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[/(test)(?:is|es)$/i, '$1is'],
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[/(alumn|syllab|octop|vir|radi|nucle|fung|cact|stimul|termin|bacill|foc|uter|loc|strat)(?:us|i)$/i, '$1us'],
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[/(agend|addend|millenni|dat|extrem|bacteri|desiderat|strat|candelabr|errat|ov|symposi|curricul|quor)a$/i, '$1um'],
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[/(apheli|hyperbat|periheli|asyndet|noumen|phenomen|criteri|organ|prolegomen|hedr|automat)a$/i, '$1on'],
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[/(alumn|alg|vertebr)ae$/i, '$1a'],
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[/(cod|mur|sil|vert|ind)ices$/i, '$1ex'],
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[/(matr|append)ices$/i, '$1ix'],
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[/(pe)(rson|ople)$/i, '$1rson'],
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[/(child)ren$/i, '$1'],
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[/(eau)x?$/i, '$1'],
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[/men$/i, 'man']
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].forEach(function (rule) {
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return pluralize.addSingularRule(rule[0], rule[1]);
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});
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/**
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* Uncountable rules.
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*/
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[
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// Singular words with no plurals.
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'adulthood',
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'advice',
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'agenda',
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'aid',
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'alcohol',
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'ammo',
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'anime',
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'athletics',
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'audio',
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'bison',
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'blood',
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'bream',
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'buffalo',
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'butter',
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'carp',
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'cash',
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'chassis',
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'chess',
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'clothing',
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'cod',
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'commerce',
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'cooperation',
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'corps',
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'debris',
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'diabetes',
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'digestion',
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'elk',
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'energy',
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'equipment',
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'excretion',
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'expertise',
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'flounder',
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'fun',
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'gallows',
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'garbage',
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'graffiti',
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'headquarters',
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'health',
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'herpes',
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'highjinks',
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'homework',
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'housework',
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'information',
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'jeans',
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'justice',
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'kudos',
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'labour',
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'literature',
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'machinery',
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'mackerel',
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'mail',
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'media',
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'mews',
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'moose',
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'music',
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'manga',
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'news',
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'pike',
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'plankton',
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'pliers',
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'pollution',
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'premises',
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'rain',
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'research',
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'rice',
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'salmon',
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'scissors',
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'series',
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'sewage',
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'shambles',
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'shrimp',
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'species',
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'staff',
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'swine',
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'tennis',
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'traffic',
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'transporation',
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'trout',
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'tuna',
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'wealth',
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'welfare',
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'whiting',
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'wildebeest',
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'wildlife',
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'you',
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// Regexes.
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/[^aeiou]ese$/i, // "chinese", "japanese"
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/deer$/i, // "deer", "reindeer"
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/fish$/i, // "fish", "blowfish", "angelfish"
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/measles$/i,
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/o[iu]s$/i, // "carnivorous"
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/pox$/i, // "chickpox", "smallpox"
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/sheep$/i
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].forEach(pluralize.addUncountableRule);
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return pluralize;
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});
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