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+// Underscore.string
+// (c) 2010 Esa-Matti Suuronen <esa-matti aet suuronen dot org>
+// Underscore.strings is freely distributable under the terms of the MIT license.
+// Documentation: https://github.com/edtsech/underscore.string
+// Some code is borrowed from MooTools and Alexandru Marasteanu.
+
+// Version 1.1.4
+
+(function(){
+ // ------------------------- Baseline setup ---------------------------------
+
+ // Establish the root object, "window" in the browser, or "global" on the server.
+ var root = this;
+
+ var nativeTrim = String.prototype.trim;
+
+ function str_repeat(i, m) {
+ for (var o = []; m > 0; o[--m] = i);
+ return o.join('');
+ }
+
+ function defaultToWhiteSpace(characters){
+ if (characters) {
+ return _s.escapeRegExp(characters);
+ }
+ return '\\s';
+ }
+
+ var _s = {
+
+ isBlank: function(str){
+ return !!str.match(/^\s*$/);
+ },
+
+ capitalize : function(str) {
+ return str.charAt(0).toUpperCase() + str.substring(1).toLowerCase();
+ },
+
+ chop: function(str, step){
+ step = step || str.length;
+ var arr = [];
+ for (var i = 0; i < str.length;) {
+ arr.push(str.slice(i,i + step));
+ i = i + step;
+ }
+ return arr;
+ },
+
+ clean: function(str){
+ return _s.strip(str.replace(/\s+/g, ' '));
+ },
+
+ count: function(str, substr){
+ var count = 0, index;
+ for (var i=0; i < str.length;) {
+ index = str.indexOf(substr, i);
+ index >= 0 && count++;
+ i = i + (index >= 0 ? index : 0) + substr.length;
+ }
+ return count;
+ },
+
+ chars: function(str) {
+ return str.split('');
+ },
+
+ escapeHTML: function(str) {
+ return String(str||'').replace(/&/g,'&amp;').replace(/</g,'&lt;').replace(/>/g,'&gt;')
+ .replace(/"/g, '&quot;').replace(/'/g, "&apos;");
+ },
+
+ unescapeHTML: function(str) {
+ return String(str||'').replace(/&amp;/g, '&').replace(/&lt;/g, '<').replace(/&gt;/g, '>')
+ .replace(/&quot;/g, '"').replace(/&apos;/g, "'");
+ },
+
+ escapeRegExp: function(str){
+ // From MooTools core 1.2.4
+ return String(str||'').replace(/([-.*+?^${}()|[\]\/\\])/g, '\\$1');
+ },
+
+ insert: function(str, i, substr){
+ var arr = str.split('');
+ arr.splice(i, 0, substr);
+ return arr.join('');
+ },
+
+ includes: function(str, needle){
+ return str.indexOf(needle) !== -1;
+ },
+
+ join: function(sep) {
+ // TODO: Could this be faster by converting
+ // arguments to Array and using array.join(sep)?
+ sep = String(sep);
+ var str = "";
+ for (var i=1; i < arguments.length; i += 1) {
+ str += String(arguments[i]);
+ if ( i !== arguments.length-1 ) {
+ str += sep;
+ }
+ }
+ return str;
+ },
+
+ lines: function(str) {
+ return str.split("\n");
+ },
+
+// reverse: function(str){
+// return Array.prototype.reverse.apply(str.split('')).join('');
+// },
+
+ splice: function(str, i, howmany, substr){
+ var arr = str.split('');
+ arr.splice(i, howmany, substr);
+ return arr.join('');
+ },
+
+ startsWith: function(str, starts){
+ return str.length >= starts.length && str.substring(0, starts.length) === starts;
+ },
+
+ endsWith: function(str, ends){
+ return str.length >= ends.length && str.substring(str.length - ends.length) === ends;
+ },
+
+ succ: function(str){
+ var arr = str.split('');
+ arr.splice(str.length-1, 1, String.fromCharCode(str.charCodeAt(str.length-1) + 1));
+ return arr.join('');
+ },
+
+ titleize: function(str){
+ var arr = str.split(' '),
+ word;
+ for (var i=0; i < arr.length; i++) {
+ word = arr[i].split('');
+ if(typeof word[0] !== 'undefined') word[0] = word[0].toUpperCase();
+ i+1 === arr.length ? arr[i] = word.join('') : arr[i] = word.join('') + ' ';
+ }
+ return arr.join('');
+ },
+
+ camelize: function(str){
+ return _s.trim(str).replace(/(\-|_|\s)+(.)?/g, function(match, separator, chr) {
+ return chr ? chr.toUpperCase() : '';
+ });
+ },
+
+ underscored: function(str){
+ return _s.trim(str).replace(/([a-z\d])([A-Z]+)/g, '$1_$2').replace(/\-|\s+/g, '_').toLowerCase();
+ },
+
+ dasherize: function(str){
+ return _s.trim(str).replace(/([a-z\d])([A-Z]+)/g, '$1-$2').replace(/^([A-Z]+)/, '-$1').replace(/\_|\s+/g, '-').toLowerCase();
+ },
+
+ trim: function(str, characters){
+ if (!characters && nativeTrim) {
+ return nativeTrim.call(str);
+ }
+ characters = defaultToWhiteSpace(characters);
+ return str.replace(new RegExp('\^[' + characters + ']+|[' + characters + ']+$', 'g'), '');
+ },
+
+ ltrim: function(str, characters){
+ characters = defaultToWhiteSpace(characters);
+ return str.replace(new RegExp('\^[' + characters + ']+', 'g'), '');
+ },
+
+ rtrim: function(str, characters){
+ characters = defaultToWhiteSpace(characters);
+ return str.replace(new RegExp('[' + characters + ']+$', 'g'), '');
+ },
+
+ truncate: function(str, length, truncateStr){
+ truncateStr = truncateStr || '...';
+ return str.slice(0,length) + truncateStr;
+ },
+
+ words: function(str, delimiter) {
+ delimiter = delimiter || " ";
+ return str.split(delimiter);
+ },
+
+
+ pad: function(str, length, padStr, type) {
+
+ var padding = '';
+ var padlen = 0;
+
+ if (!padStr) { padStr = ' '; }
+ else if (padStr.length > 1) { padStr = padStr[0]; }
+ switch(type) {
+ case "right":
+ padlen = (length - str.length);
+ padding = str_repeat(padStr, padlen);
+ str = str+padding;
+ break;
+ case "both":
+ padlen = (length - str.length);
+ padding = {
+ 'left' : str_repeat(padStr, Math.ceil(padlen/2)),
+ 'right': str_repeat(padStr, Math.floor(padlen/2))
+ };
+ str = padding.left+str+padding.right;
+ break;
+ default: // "left"
+ padlen = (length - str.length);
+ padding = str_repeat(padStr, padlen);;
+ str = padding+str;
+ }
+ return str;
+ },
+
+ lpad: function(str, length, padStr) {
+ return _s.pad(str, length, padStr);
+ },
+
+ rpad: function(str, length, padStr) {
+ return _s.pad(str, length, padStr, 'right');
+ },
+
+ lrpad: function(str, length, padStr) {
+ return _s.pad(str, length, padStr, 'both');
+ },
+
+
+ /**
+ * Credits for this function goes to
+ * http://www.diveintojavascript.com/projects/sprintf-for-javascript
+ *
+ * Copyright (c) Alexandru Marasteanu <alexaholic [at) gmail (dot] com>
+ * All rights reserved.
+ * */
+ sprintf: function(){
+
+ var i = 0, a, f = arguments[i++], o = [], m, p, c, x, s = '';
+ while (f) {
+ if (m = /^[^\x25]+/.exec(f)) {
+ o.push(m[0]);
+ }
+ else if (m = /^\x25{2}/.exec(f)) {
+ o.push('%');
+ }
+ else if (m = /^\x25(?:(\d+)\$)?(\+)?(0|'[^$])?(-)?(\d+)?(?:\.(\d+))?([b-fosuxX])/.exec(f)) {
+ if (((a = arguments[m[1] || i++]) == null) || (a == undefined)) {
+ throw('Too few arguments.');
+ }
+ if (/[^s]/.test(m[7]) && (typeof(a) != 'number')) {
+ throw('Expecting number but found ' + typeof(a));
+ }
+ switch (m[7]) {
+ case 'b': a = a.toString(2); break;
+ case 'c': a = String.fromCharCode(a); break;
+ case 'd': a = parseInt(a); break;
+ case 'e': a = m[6] ? a.toExponential(m[6]) : a.toExponential(); break;
+ case 'f': a = m[6] ? parseFloat(a).toFixed(m[6]) : parseFloat(a); break;
+ case 'o': a = a.toString(8); break;
+ case 's': a = ((a = String(a)) && m[6] ? a.substring(0, m[6]) : a); break;
+ case 'u': a = Math.abs(a); break;
+ case 'x': a = a.toString(16); break;
+ case 'X': a = a.toString(16).toUpperCase(); break;
+ }
+ a = (/[def]/.test(m[7]) && m[2] && a >= 0 ? '+'+ a : a);
+ c = m[3] ? m[3] == '0' ? '0' : m[3].charAt(1) : ' ';
+ x = m[5] - String(a).length - s.length;
+ p = m[5] ? str_repeat(c, x) : '';
+ o.push(s + (m[4] ? a + p : p + a));
+ }
+ else {
+ throw('Huh ?!');
+ }
+ f = f.substring(m[0].length);
+ }
+ return o.join('');
+ }
+ }
+
+ // Aliases
+
+ _s.strip = _s.trim;
+ _s.lstrip = _s.ltrim;
+ _s.rstrip = _s.rtrim;
+ _s.center = _s.lrpad
+ _s.ljust = _s.lpad
+ _s.rjust = _s.rpad
+
+ // CommonJS module is defined
+ if (typeof window === 'undefined' && typeof module !== 'undefined') {
+ // Export module
+ module.exports = _s;
+
+ // Integrate with Underscore.js
+ } else if (typeof root._ !== 'undefined') {
+ root._.mixin(_s);
+
+ // Or define it
+ } else {
+ root._ = _s;
+ }
+
+}());
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