class StringUtils {
	//--------------------------
	// constructor
	//--------------------------
	constructor() {}
	//--------------------------
	// methods
	//--------------------------
	cleanString(string) {
		var clean = string
			.replace(/(^\-+|[^a-zA-Z0-9\/_| -]+|\-+$)/g, '')
			.toLowerCase()
			.replace(/[\/_| -]+/g, '-');
		return clean;
	}

	decodeHTML(string, quote_style) {
		var optTemp = 0,
			i = 0,
			noquotes = false;
		if (typeof quote_style === 'undefined') {
			quote_style = 2;
		}
		string = string
			.toString()
			.replace(/&lt;/g, '<')
			.replace(/&gt;/g, '>');
		var OPTS = {
			ENT_NOQUOTES: 0,
			ENT_HTML_QUOTE_SINGLE: 1,
			ENT_HTML_QUOTE_DOUBLE: 2,
			ENT_COMPAT: 2,
			ENT_QUOTES: 3,
			ENT_IGNORE: 4
		};
		if (quote_style === 0) {
			noquotes = true;
		}
		if (typeof quote_style !== 'number') {
			// Allow for a single string or an array of string flags
			quote_style = [].concat(quote_style);
			for (i = 0; i < quote_style.length; i++) {
				// Resolve string input to bitwise e.g. 'PATHINFO_EXTENSION' becomes 4
				if (OPTS[quote_style[i]] === 0) {
					noquotes = true;
				} else if (OPTS[quote_style[i]]) {
					optTemp = optTemp | OPTS[quote_style[i]];
				}
			}
			quote_style = optTemp;
		}
		if (quote_style & OPTS.ENT_HTML_QUOTE_SINGLE) {
			string = string.replace(/&#0*39;/g, "'"); // PHP doesn't currently escape if more than one 0, but it should
			// string = string.replace(/&apos;|&#x0*27;/g, "'"); // This would also be useful here, but not a part of PHP
		}
		if (!noquotes) {
			string = string.replace(/&quot;/g, '"');
		}
		// Put this in last place to avoid escape being double-decoded
		string = string.replace(/&amp;/g, '&');
		return string;
	}

	//--------------------------
	// event handlers
	//--------------------------
}
export default StringUtils;
