com.feilong.taglib.display.httpconcat.handler.ItemSrcExtractor Maven / Gradle / Ivy

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feilong is a suite of core and expanded libraries that include utility classes, http, excel,cvs, io classes, and much much more.

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/*
 * Copyright (C) 2008 feilong
 *
 * 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 com.feilong.taglib.display.httpconcat.handler;

import static com.feilong.core.Validator.isNotNullOrEmpty;
import static com.feilong.core.Validator.isNullOrEmpty;
import static com.feilong.core.lang.StringUtil.EMPTY;

import com.feilong.core.Validate;
import com.feilong.core.lang.StringUtil;
import com.feilong.core.util.RegexUtil;
import com.feilong.lib.lang3.StringUtils;

/**
 * 路径提取器.
 * 
 * @author feilong
 * @since 1.11.1
 */
public class ItemSrcExtractor{

    /** Don't let anyone instantiate this class. */
    private ItemSrcExtractor(){
        //AssertionError不是必须的. 但它可以避免不小心在类的内部调用构造器. 保证该类在任何情况下都不会被实例化.
        //see 《Effective Java》 2nd
        throw new AssertionError("No " + getClass().getName() + " instances for you!");
    }

    //---------------------------------------------------------------

    /**
     * 解析 item 里面的内容.
     * 
     * 示例1:
     * 
     * 
     * 
     *      * item     =   {@code }
     * domain   =   http://css.feilong.com:8888
     * 
     * 
     * 返回:
     * 
     *      * {@code scripts/pdp/sub_salesProperties.js}
     * 
     * 
     * 
     * 
     * 
     * 示例2:
     * 
     * 
     * 
     *      * item     =   {@code }
     * domain   =   http://css.feilong.com:8888/
     * 
     * 
     * 返回:
     * 
     *      * {@code res/feilong/css/feilong-all.css}
     * 
     * 
     * 
     *
     * @param item
     *            the item
     * @param domain
     *            the domain
     * @return 如果 item 是null,抛出 {@link NullPointerException}

     *         如果 item 是blank,抛出 {@link IllegalArgumentException}

     *         如果 item 以 {@code "
     *         如果 item 以 {@code "