글자 너비를 반각 18자까지 확장

js/common.js

@@ -23,6 +23,59 @@ var escapeHtml = (function (string) {
     }
 })();
 
+;(function(ns){
+    //https://gist.github.com/demouth/3217440
+	/**
+	 * mb_strwidth
+	 * @param String
+	 * @return int
+	 * @see http://php.net/manual/ja/function.mb-strwidth.php
+	 */
+	var mb_strwidth = function(str){
+		var i=0,l=str.length,c='',length=0;
+		for(;i<l;i++){
+			c=str.charCodeAt(i);
+			if(0x0000<=c&&c<=0x0019){
+				length += 0;
+			}else if(0x0020<=c&&c<=0x1FFF){
+				length += 1;
+			}else if(0x2000<=c&&c<=0xFF60){
+				length += 2;
+			}else if(0xFF61<=c&&c<=0xFF9F){
+				length += 1;
+			}else if(0xFFA0<=c){
+				length += 2;
+			}
+		}
+		return length;
+	};
+	
+	/**
+	 * mb_strimwidth
+	 * @param String
+	 * @param int
+	 * @param int
+	 * @param String
+	 * @return String
+	 * @see http://www.php.net/manual/ja/function.mb-strimwidth.php
+	 */
+	var mb_strimwidth = function(str,start,width,trimmarker){
+		if(typeof trimmarker === 'undefined') trimmarker='';
+		var trimmakerWidth = mb_strwidth(trimmarker),i=start,l=str.length,trimmedLength=0,trimmedStr='';
+		for(;i<l;i++){
+			var charCode=str.charCodeAt(i),c=str.charAt(i),charWidth=mb_strwidth(c),next=str.charAt(i+1),nextWidth=mb_strwidth(next);
+			trimmedLength += charWidth;
+			trimmedStr += c;
+			if(trimmedLength+trimmakerWidth+nextWidth>width){
+				trimmedStr += trimmarker;
+				break;
+			}
+		}
+		return trimmedStr;
+	};
+	ns.mb_strwidth   = mb_strwidth;
+	ns.mb_strimwidth = mb_strimwidth;
+})(window);
 
 /**
  * object의 array를 id를 key로 삼는 object로 재 변환