Merge pull request #313 from crazy-max/util-format-size

util: formatFileSize

src/util.ts

@@ -166,4 +166,12 @@ export class Util {
         throw new Error(`parseBool syntax error: ${str}`);
     }
   }
+
+  public static formatFileSize(bytes: number): string {
+    if (bytes === 0) return '0 Bytes';
+    const k = 1024;
+    const sizes = ['Bytes', 'KB', 'MB', 'GB', 'TB', 'PB', 'EB', 'ZB', 'YB'];
+    const i = Math.floor(Math.log(bytes) / Math.log(k));
+    return parseFloat((bytes / Math.pow(k, i)).toFixed(2)) + ' ' + sizes[i];
+  }
 }