charset.java

庖丁分词模块

/**
 * Copyright 2007 The Apache Software Foundation
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package net.paoding.analysis.knife;

/**
 * 
 * @author Zhiliang Wang [[e-mail]]
 * 
 * @since 1.0
 * 
 */
public class CharSet {
	
	public static boolean isArabianNumber(char ch) {
		return ch >= '0' && ch <= '9';
	}

	public static boolean isLetter(char ch) {
		return ch >= 'a' && ch <= 'z' || ch >= 'A' && ch <= 'Z';
	}

	public static boolean isCjkUnifiedIdeographs(char ch) {
		return ch >= 0x4E00 && ch < 0xA000;
	}

}