Twitter Tweet字符串编码实体实用程序

Posted 2021-02-25

Encode a Tweet from a Twitter search query wrapping all hash tags, user names and urls with herf entities with one function call

package {
	/**
	 * @author Ninjaparade
	 */
	public class TwitterStringUtil
	{
		public static function encodeTwitterString(tweet : String) : String
		{
			var twitterHash : RegExp = /(#[a-zA-Z0-9_%]*)/g;
			var twitterUser : RegExp = /(@[a-zA-Z0-9_%]+)/ig;
			var twitterLink : RegExp = /(https?://)?(www.)?([a-zA-Z0-9_%]*).[a-z]{2,4}(.[a-z]{2})?((/[a-zA-Z0-9_%]*)+)?(.[a-z]*)?/g;
			var str : String = tweet;
			var arr : Object = str.match(twitterLink);
 
			if (arr != null)
			{
				for each ( var s:String in arr ) {
					str = str.replace(s, encodeURL(s));
				}
			}
			arr = str.match(twitterHash);
			if (arr != null)
			{
				for each (var k : String in arr) {
					str = str.replace(k, replaceHashtoURL(k));
				}
			}
			arr = str.match(twitterUser);
			if (arr != null)
			{
				for each (var j : String in arr) {
					str = str.replace(j, replaceURL(j));
					// str = "<a href = "http://www.twitter.com/" + j.substr(1, j.length) + "" " + "target="_blank">" + j + "</a>";
				}
			}
			return str;
		}
 
		public static function searchTwitterHash(value : String) : String
		{
			var pattern : RegExp = /(#[a-zA-Z0-9_%]*)/g;
			var str : String = value;
			var arr : Object = value.match(pattern);
 
			// if(arr != null) {
			for each ( var s:String in arr ) {
				str = str.replace(s, replaceHashtoURL(s));
				// }
			}
			return str;
		}
 
		public static function searchTwitterUser(value : String) : String
		{
			var pattern : RegExp = /(@[a-zA-Z0-9_%]+)/ig;
			var str : String = value;
			var arr : Object = value.match(pattern);
 
			for each ( var s:String in arr ) {
				str = str.replace(s, replaceURL(s));
			}
			return str;
		}
 
		public static function searchTwitterURL(value : String) : String
		{
			var pattern : RegExp = /(https?://)?(www.)?([a-zA-Z0-9_%]*).[a-z]{2,4}(.[a-z]{2})?((/[a-zA-Z0-9_%]*)+)?(.[a-z]*)?/g;
			var str : String = value;
			var arr : Object = value.match(pattern);
 
			if (arr != null)
			{
				for each ( var s:String in arr ) {
					str = str.replace(s, encodeURL(s));
				}
			}
			return str;
		}
 
		public static function replaceURL(value : String) : String
		{
			var str : String = "<a href = "http://www.twitter.com/" + value.substr(1, value.length) + "" " + "target="_blank">" + value + "</a>";
			return str;
		}
 
		public static function replaceHashtoURL(value : String) : String
		{
			var str : String = "<a href = "http://twitter.com/#search?q=%23" + value.substr(1, value.length) + "" " + "target="_blank">" + value + "</a>";
			return str;
		}
 
		public static function encodeURL(value : String) : String
		{
			var str : String = "<a href = " + """ + value + "" " + "target="_blank">" + value + "</a>";
			return str;
		}
	}
}