674 lines
20 KiB
JavaScript
674 lines
20 KiB
JavaScript
// Underscore.string
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// (c) 2010 Esa-Matti Suuronen <esa-matti aet suuronen dot org>
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// Underscore.string is freely distributable under the terms of the MIT license.
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// Documentation: https://github.com/epeli/underscore.string
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// Some code is borrowed from MooTools and Alexandru Marasteanu.
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// Version '2.3.2'
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!function(root, String){
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'use strict';
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// Defining helper functions.
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var nativeTrim = String.prototype.trim;
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var nativeTrimRight = String.prototype.trimRight;
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var nativeTrimLeft = String.prototype.trimLeft;
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var parseNumber = function(source) { return source * 1 || 0; };
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var strRepeat = function(str, qty){
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if (qty < 1) return '';
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var result = '';
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while (qty > 0) {
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if (qty & 1) result += str;
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qty >>= 1, str += str;
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}
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return result;
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};
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var slice = [].slice;
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var defaultToWhiteSpace = function(characters) {
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if (characters == null)
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return '\\s';
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else if (characters.source)
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return characters.source;
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else
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return '[' + _s.escapeRegExp(characters) + ']';
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};
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// Helper for toBoolean
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function boolMatch(s, matchers) {
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var i, matcher, down = s.toLowerCase();
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matchers = [].concat(matchers);
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for (i = 0; i < matchers.length; i += 1) {
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matcher = matchers[i];
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if (!matcher) continue;
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if (matcher.test && matcher.test(s)) return true;
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if (matcher.toLowerCase() === down) return true;
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}
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}
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var escapeChars = {
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lt: '<',
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gt: '>',
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quot: '"',
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amp: '&',
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apos: "'"
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};
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var reversedEscapeChars = {};
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for(var key in escapeChars) reversedEscapeChars[escapeChars[key]] = key;
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reversedEscapeChars["'"] = '#39';
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// sprintf() for JavaScript 0.7-beta1
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// http://www.diveintojavascript.com/projects/javascript-sprintf
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//
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// Copyright (c) Alexandru Marasteanu <alexaholic [at) gmail (dot] com>
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// All rights reserved.
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var sprintf = (function() {
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function get_type(variable) {
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return Object.prototype.toString.call(variable).slice(8, -1).toLowerCase();
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}
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var str_repeat = strRepeat;
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var str_format = function() {
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if (!str_format.cache.hasOwnProperty(arguments[0])) {
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str_format.cache[arguments[0]] = str_format.parse(arguments[0]);
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}
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return str_format.format.call(null, str_format.cache[arguments[0]], arguments);
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};
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str_format.format = function(parse_tree, argv) {
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var cursor = 1, tree_length = parse_tree.length, node_type = '', arg, output = [], i, k, match, pad, pad_character, pad_length;
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for (i = 0; i < tree_length; i++) {
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node_type = get_type(parse_tree[i]);
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if (node_type === 'string') {
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output.push(parse_tree[i]);
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}
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else if (node_type === 'array') {
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match = parse_tree[i]; // convenience purposes only
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if (match[2]) { // keyword argument
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arg = argv[cursor];
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for (k = 0; k < match[2].length; k++) {
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if (!arg.hasOwnProperty(match[2][k])) {
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throw new Error(sprintf('[_.sprintf] property "%s" does not exist', match[2][k]));
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}
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arg = arg[match[2][k]];
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}
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} else if (match[1]) { // positional argument (explicit)
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arg = argv[match[1]];
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}
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else { // positional argument (implicit)
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arg = argv[cursor++];
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}
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if (/[^s]/.test(match[8]) && (get_type(arg) != 'number')) {
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throw new Error(sprintf('[_.sprintf] expecting number but found %s', get_type(arg)));
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}
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switch (match[8]) {
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case 'b': arg = arg.toString(2); break;
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case 'c': arg = String.fromCharCode(arg); break;
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case 'd': arg = parseInt(arg, 10); break;
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case 'e': arg = match[7] ? arg.toExponential(match[7]) : arg.toExponential(); break;
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case 'f': arg = match[7] ? parseFloat(arg).toFixed(match[7]) : parseFloat(arg); break;
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case 'o': arg = arg.toString(8); break;
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case 's': arg = ((arg = String(arg)) && match[7] ? arg.substring(0, match[7]) : arg); break;
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case 'u': arg = Math.abs(arg); break;
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case 'x': arg = arg.toString(16); break;
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case 'X': arg = arg.toString(16).toUpperCase(); break;
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}
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arg = (/[def]/.test(match[8]) && match[3] && arg >= 0 ? '+'+ arg : arg);
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pad_character = match[4] ? match[4] == '0' ? '0' : match[4].charAt(1) : ' ';
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pad_length = match[6] - String(arg).length;
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pad = match[6] ? str_repeat(pad_character, pad_length) : '';
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output.push(match[5] ? arg + pad : pad + arg);
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}
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}
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return output.join('');
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};
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str_format.cache = {};
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str_format.parse = function(fmt) {
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var _fmt = fmt, match = [], parse_tree = [], arg_names = 0;
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while (_fmt) {
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if ((match = /^[^\x25]+/.exec(_fmt)) !== null) {
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parse_tree.push(match[0]);
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}
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else if ((match = /^\x25{2}/.exec(_fmt)) !== null) {
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parse_tree.push('%');
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}
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else if ((match = /^\x25(?:([1-9]\d*)\$|\(([^\)]+)\))?(\+)?(0|'[^$])?(-)?(\d+)?(?:\.(\d+))?([b-fosuxX])/.exec(_fmt)) !== null) {
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if (match[2]) {
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arg_names |= 1;
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var field_list = [], replacement_field = match[2], field_match = [];
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if ((field_match = /^([a-z_][a-z_\d]*)/i.exec(replacement_field)) !== null) {
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field_list.push(field_match[1]);
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while ((replacement_field = replacement_field.substring(field_match[0].length)) !== '') {
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if ((field_match = /^\.([a-z_][a-z_\d]*)/i.exec(replacement_field)) !== null) {
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field_list.push(field_match[1]);
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}
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else if ((field_match = /^\[(\d+)\]/.exec(replacement_field)) !== null) {
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field_list.push(field_match[1]);
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}
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else {
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throw new Error('[_.sprintf] huh?');
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}
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}
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}
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else {
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throw new Error('[_.sprintf] huh?');
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}
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match[2] = field_list;
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}
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else {
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arg_names |= 2;
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}
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if (arg_names === 3) {
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throw new Error('[_.sprintf] mixing positional and named placeholders is not (yet) supported');
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}
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parse_tree.push(match);
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}
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else {
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throw new Error('[_.sprintf] huh?');
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}
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_fmt = _fmt.substring(match[0].length);
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}
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return parse_tree;
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};
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return str_format;
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})();
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// Defining underscore.string
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var _s = {
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VERSION: '2.3.0',
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isBlank: function(str){
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if (str == null) str = '';
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return (/^\s*$/).test(str);
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},
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stripTags: function(str){
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if (str == null) return '';
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return String(str).replace(/<\/?[^>]+>/g, '');
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},
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capitalize : function(str){
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str = str == null ? '' : String(str);
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return str.charAt(0).toUpperCase() + str.slice(1);
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},
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chop: function(str, step){
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if (str == null) return [];
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str = String(str);
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step = ~~step;
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return step > 0 ? str.match(new RegExp('.{1,' + step + '}', 'g')) : [str];
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},
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clean: function(str){
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return _s.strip(str).replace(/\s+/g, ' ');
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},
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count: function(str, substr){
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if (str == null || substr == null) return 0;
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str = String(str);
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substr = String(substr);
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var count = 0,
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pos = 0,
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length = substr.length;
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while (true) {
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pos = str.indexOf(substr, pos);
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if (pos === -1) break;
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count++;
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pos += length;
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}
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return count;
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},
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chars: function(str) {
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if (str == null) return [];
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return String(str).split('');
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},
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swapCase: function(str) {
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if (str == null) return '';
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return String(str).replace(/\S/g, function(c){
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return c === c.toUpperCase() ? c.toLowerCase() : c.toUpperCase();
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});
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},
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escapeHTML: function(str) {
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if (str == null) return '';
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return String(str).replace(/[&<>"']/g, function(m){ return '&' + reversedEscapeChars[m] + ';'; });
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},
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unescapeHTML: function(str) {
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if (str == null) return '';
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return String(str).replace(/\&([^;]+);/g, function(entity, entityCode){
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var match;
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if (entityCode in escapeChars) {
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return escapeChars[entityCode];
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} else if (match = entityCode.match(/^#x([\da-fA-F]+)$/)) {
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return String.fromCharCode(parseInt(match[1], 16));
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} else if (match = entityCode.match(/^#(\d+)$/)) {
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return String.fromCharCode(~~match[1]);
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} else {
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return entity;
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}
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});
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},
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escapeRegExp: function(str){
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if (str == null) return '';
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return String(str).replace(/([.*+?^=!:${}()|[\]\/\\])/g, '\\$1');
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},
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splice: function(str, i, howmany, substr){
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var arr = _s.chars(str);
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arr.splice(~~i, ~~howmany, substr);
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return arr.join('');
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},
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insert: function(str, i, substr){
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return _s.splice(str, i, 0, substr);
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},
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include: function(str, needle){
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if (needle === '') return true;
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if (str == null) return false;
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return String(str).indexOf(needle) !== -1;
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},
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join: function() {
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var args = slice.call(arguments),
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separator = args.shift();
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if (separator == null) separator = '';
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return args.join(separator);
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},
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lines: function(str) {
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if (str == null) return [];
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return String(str).split("\n");
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},
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reverse: function(str){
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return _s.chars(str).reverse().join('');
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},
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startsWith: function(str, starts){
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if (starts === '') return true;
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if (str == null || starts == null) return false;
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str = String(str); starts = String(starts);
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return str.length >= starts.length && str.slice(0, starts.length) === starts;
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},
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endsWith: function(str, ends){
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if (ends === '') return true;
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if (str == null || ends == null) return false;
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str = String(str); ends = String(ends);
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return str.length >= ends.length && str.slice(str.length - ends.length) === ends;
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},
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succ: function(str){
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if (str == null) return '';
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str = String(str);
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return str.slice(0, -1) + String.fromCharCode(str.charCodeAt(str.length-1) + 1);
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},
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titleize: function(str){
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if (str == null) return '';
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str = String(str).toLowerCase();
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return str.replace(/(?:^|\s|-)\S/g, function(c){ return c.toUpperCase(); });
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},
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camelize: function(str){
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return _s.trim(str).replace(/[-_\s]+(.)?/g, function(match, c){ return c ? c.toUpperCase() : ""; });
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},
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underscored: function(str){
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return _s.trim(str).replace(/([a-z\d])([A-Z]+)/g, '$1_$2').replace(/[-\s]+/g, '_').toLowerCase();
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},
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dasherize: function(str){
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return _s.trim(str).replace(/([A-Z])/g, '-$1').replace(/[-_\s]+/g, '-').toLowerCase();
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},
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classify: function(str){
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return _s.titleize(String(str).replace(/[\W_]/g, ' ')).replace(/\s/g, '');
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},
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humanize: function(str){
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return _s.capitalize(_s.underscored(str).replace(/_id$/,'').replace(/_/g, ' '));
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},
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trim: function(str, characters){
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if (str == null) return '';
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if (!characters && nativeTrim) return nativeTrim.call(str);
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characters = defaultToWhiteSpace(characters);
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return String(str).replace(new RegExp('\^' + characters + '+|' + characters + '+$', 'g'), '');
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},
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ltrim: function(str, characters){
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if (str == null) return '';
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if (!characters && nativeTrimLeft) return nativeTrimLeft.call(str);
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characters = defaultToWhiteSpace(characters);
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return String(str).replace(new RegExp('^' + characters + '+'), '');
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},
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rtrim: function(str, characters){
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if (str == null) return '';
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if (!characters && nativeTrimRight) return nativeTrimRight.call(str);
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characters = defaultToWhiteSpace(characters);
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return String(str).replace(new RegExp(characters + '+$'), '');
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},
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truncate: function(str, length, truncateStr){
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if (str == null) return '';
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str = String(str); truncateStr = truncateStr || '...';
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length = ~~length;
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return str.length > length ? str.slice(0, length) + truncateStr : str;
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},
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/**
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* _s.prune: a more elegant version of truncate
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* prune extra chars, never leaving a half-chopped word.
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* @author github.com/rwz
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*/
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prune: function(str, length, pruneStr){
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if (str == null) return '';
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str = String(str); length = ~~length;
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pruneStr = pruneStr != null ? String(pruneStr) : '...';
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if (str.length <= length) return str;
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var tmpl = function(c){ return c.toUpperCase() !== c.toLowerCase() ? 'A' : ' '; },
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template = str.slice(0, length+1).replace(/.(?=\W*\w*$)/g, tmpl); // 'Hello, world' -> 'HellAA AAAAA'
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if (template.slice(template.length-2).match(/\w\w/))
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template = template.replace(/\s*\S+$/, '');
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else
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template = _s.rtrim(template.slice(0, template.length-1));
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return (template+pruneStr).length > str.length ? str : str.slice(0, template.length)+pruneStr;
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},
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words: function(str, delimiter) {
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if (_s.isBlank(str)) return [];
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return _s.trim(str, delimiter).split(delimiter || /\s+/);
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},
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pad: function(str, length, padStr, type) {
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str = str == null ? '' : String(str);
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length = ~~length;
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var padlen = 0;
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if (!padStr)
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padStr = ' ';
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else if (padStr.length > 1)
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padStr = padStr.charAt(0);
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switch(type) {
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case 'right':
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padlen = length - str.length;
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return str + strRepeat(padStr, padlen);
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case 'both':
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padlen = length - str.length;
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return strRepeat(padStr, Math.ceil(padlen/2)) + str
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+ strRepeat(padStr, Math.floor(padlen/2));
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default: // 'left'
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padlen = length - str.length;
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return strRepeat(padStr, padlen) + str;
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}
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},
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lpad: function(str, length, padStr) {
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return _s.pad(str, length, padStr);
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},
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rpad: function(str, length, padStr) {
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return _s.pad(str, length, padStr, 'right');
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},
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lrpad: function(str, length, padStr) {
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return _s.pad(str, length, padStr, 'both');
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},
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sprintf: sprintf,
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vsprintf: function(fmt, argv){
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argv.unshift(fmt);
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return sprintf.apply(null, argv);
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},
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toNumber: function(str, decimals) {
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if (!str) return 0;
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str = _s.trim(str);
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if (!str.match(/^-?\d+(?:\.\d+)?$/)) return NaN;
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return parseNumber(parseNumber(str).toFixed(~~decimals));
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},
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numberFormat : function(number, dec, dsep, tsep) {
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if (isNaN(number) || number == null) return '';
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number = number.toFixed(~~dec);
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tsep = typeof tsep == 'string' ? tsep : ',';
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var parts = number.split('.'), fnums = parts[0],
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decimals = parts[1] ? (dsep || '.') + parts[1] : '';
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return fnums.replace(/(\d)(?=(?:\d{3})+$)/g, '$1' + tsep) + decimals;
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},
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strRight: function(str, sep){
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if (str == null) return '';
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str = String(str); sep = sep != null ? String(sep) : sep;
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var pos = !sep ? -1 : str.indexOf(sep);
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return ~pos ? str.slice(pos+sep.length, str.length) : str;
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},
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strRightBack: function(str, sep){
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if (str == null) return '';
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str = String(str); sep = sep != null ? String(sep) : sep;
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var pos = !sep ? -1 : str.lastIndexOf(sep);
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return ~pos ? str.slice(pos+sep.length, str.length) : str;
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},
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strLeft: function(str, sep){
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if (str == null) return '';
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str = String(str); sep = sep != null ? String(sep) : sep;
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var pos = !sep ? -1 : str.indexOf(sep);
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return ~pos ? str.slice(0, pos) : str;
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},
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|
|
|
strLeftBack: function(str, sep){
|
|
if (str == null) return '';
|
|
str += ''; sep = sep != null ? ''+sep : sep;
|
|
var pos = str.lastIndexOf(sep);
|
|
return ~pos ? str.slice(0, pos) : str;
|
|
},
|
|
|
|
toSentence: function(array, separator, lastSeparator, serial) {
|
|
separator = separator || ', ';
|
|
lastSeparator = lastSeparator || ' and ';
|
|
var a = array.slice(), lastMember = a.pop();
|
|
|
|
if (array.length > 2 && serial) lastSeparator = _s.rtrim(separator) + lastSeparator;
|
|
|
|
return a.length ? a.join(separator) + lastSeparator + lastMember : lastMember;
|
|
},
|
|
|
|
toSentenceSerial: function() {
|
|
var args = slice.call(arguments);
|
|
args[3] = true;
|
|
return _s.toSentence.apply(_s, args);
|
|
},
|
|
|
|
slugify: function(str) {
|
|
if (str == null) return '';
|
|
|
|
var from = "ąàáäâãåæăćęèéëêìíïîłńòóöôõøśșțùúüûñçżź",
|
|
to = "aaaaaaaaaceeeeeiiiilnoooooosstuuuunczz",
|
|
regex = new RegExp(defaultToWhiteSpace(from), 'g');
|
|
|
|
str = String(str).toLowerCase().replace(regex, function(c){
|
|
var index = from.indexOf(c);
|
|
return to.charAt(index) || '-';
|
|
});
|
|
|
|
return _s.dasherize(str.replace(/[^\w\s-]/g, ''));
|
|
},
|
|
|
|
surround: function(str, wrapper) {
|
|
return [wrapper, str, wrapper].join('');
|
|
},
|
|
|
|
quote: function(str, quoteChar) {
|
|
return _s.surround(str, quoteChar || '"');
|
|
},
|
|
|
|
unquote: function(str, quoteChar) {
|
|
quoteChar = quoteChar || '"';
|
|
if (str[0] === quoteChar && str[str.length-1] === quoteChar)
|
|
return str.slice(1,str.length-1);
|
|
else return str;
|
|
},
|
|
|
|
exports: function() {
|
|
var result = {};
|
|
|
|
for (var prop in this) {
|
|
if (!this.hasOwnProperty(prop) || prop.match(/^(?:include|contains|reverse)$/)) continue;
|
|
result[prop] = this[prop];
|
|
}
|
|
|
|
return result;
|
|
},
|
|
|
|
repeat: function(str, qty, separator){
|
|
if (str == null) return '';
|
|
|
|
qty = ~~qty;
|
|
|
|
// using faster implementation if separator is not needed;
|
|
if (separator == null) return strRepeat(String(str), qty);
|
|
|
|
// this one is about 300x slower in Google Chrome
|
|
for (var repeat = []; qty > 0; repeat[--qty] = str) {}
|
|
return repeat.join(separator);
|
|
},
|
|
|
|
naturalCmp: function(str1, str2){
|
|
if (str1 == str2) return 0;
|
|
if (!str1) return -1;
|
|
if (!str2) return 1;
|
|
|
|
var cmpRegex = /(\.\d+)|(\d+)|(\D+)/g,
|
|
tokens1 = String(str1).toLowerCase().match(cmpRegex),
|
|
tokens2 = String(str2).toLowerCase().match(cmpRegex),
|
|
count = Math.min(tokens1.length, tokens2.length);
|
|
|
|
for(var i = 0; i < count; i++) {
|
|
var a = tokens1[i], b = tokens2[i];
|
|
|
|
if (a !== b){
|
|
var num1 = parseInt(a, 10);
|
|
if (!isNaN(num1)){
|
|
var num2 = parseInt(b, 10);
|
|
if (!isNaN(num2) && num1 - num2)
|
|
return num1 - num2;
|
|
}
|
|
return a < b ? -1 : 1;
|
|
}
|
|
}
|
|
|
|
if (tokens1.length === tokens2.length)
|
|
return tokens1.length - tokens2.length;
|
|
|
|
return str1 < str2 ? -1 : 1;
|
|
},
|
|
|
|
levenshtein: function(str1, str2) {
|
|
if (str1 == null && str2 == null) return 0;
|
|
if (str1 == null) return String(str2).length;
|
|
if (str2 == null) return String(str1).length;
|
|
|
|
str1 = String(str1); str2 = String(str2);
|
|
|
|
var current = [], prev, value;
|
|
|
|
for (var i = 0; i <= str2.length; i++)
|
|
for (var j = 0; j <= str1.length; j++) {
|
|
if (i && j)
|
|
if (str1.charAt(j - 1) === str2.charAt(i - 1))
|
|
value = prev;
|
|
else
|
|
value = Math.min(current[j], current[j - 1], prev) + 1;
|
|
else
|
|
value = i + j;
|
|
|
|
prev = current[j];
|
|
current[j] = value;
|
|
}
|
|
|
|
return current.pop();
|
|
},
|
|
|
|
toBoolean: function(str, trueValues, falseValues) {
|
|
if (typeof str === "number") str = "" + str;
|
|
if (typeof str !== "string") return !!str;
|
|
str = _s.trim(str);
|
|
if (boolMatch(str, trueValues || ["true", "1"])) return true;
|
|
if (boolMatch(str, falseValues || ["false", "0"])) return false;
|
|
}
|
|
};
|
|
|
|
// Aliases
|
|
|
|
_s.strip = _s.trim;
|
|
_s.lstrip = _s.ltrim;
|
|
_s.rstrip = _s.rtrim;
|
|
_s.center = _s.lrpad;
|
|
_s.rjust = _s.lpad;
|
|
_s.ljust = _s.rpad;
|
|
_s.contains = _s.include;
|
|
_s.q = _s.quote;
|
|
_s.toBool = _s.toBoolean;
|
|
|
|
// Exporting
|
|
|
|
// CommonJS module is defined
|
|
if (typeof exports !== 'undefined') {
|
|
if (typeof module !== 'undefined' && module.exports)
|
|
module.exports = _s;
|
|
|
|
exports._s = _s;
|
|
}
|
|
|
|
// Register as a named module with AMD.
|
|
if (typeof define === 'function' && define.amd)
|
|
define('underscore.string', [], function(){ return _s; });
|
|
|
|
|
|
// Integrate with Underscore.js if defined
|
|
// or create our own underscore object.
|
|
root._ = root._ || {};
|
|
root._.string = root._.str = _s;
|
|
}(this, String);
|