package org.chenyang.http.util;

public final class TextUtils {
   public static boolean isEmpty(CharSequence s) {
      if (s == null) {
         return true;
      } else {
         return s.length() == 0;
      }
   }

   public static boolean isBlank(CharSequence s) {
      if (s == null) {
         return true;
      } else {
         for(int i = 0; i < s.length(); ++i) {
            if (!Character.isWhitespace(s.charAt(i))) {
               return false;
            }
         }

         return true;
      }
   }

   public static boolean containsBlanks(CharSequence s) {
      if (s == null) {
         return false;
      } else {
         for(int i = 0; i < s.length(); ++i) {
            if (Character.isWhitespace(s.charAt(i))) {
               return true;
            }
         }

         return false;
      }
   }
}
