org.aliuge.crawler.extractor.selector.action.string.StringBetweenAction.java Source code

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Here is the source code for org.aliuge.crawler.extractor.selector.action.string.StringBetweenAction.java

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/**
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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 org.aliuge.crawler.extractor.selector.action.string;

import org.aliuge.crawler.extractor.selector.action.StringSelectorAction;
import org.apache.commons.lang3.StringUtils;

/**
 * @author 
 * @date 2014911
 * @desc ?
 */
public class StringBetweenAction extends StringSelectorAction {
    /**
     * ??tt,t<br>
     * t,xt,x<br>
     * t,x,#t,x#
     */
    private String exp;

    public StringBetweenAction(String exp) {
        this.exp = exp;
    }

    /**
     * ??<br>
     * tt,t<br>
     * t,xt,x<br>
     * t,x,#t,x#
     */
    @Override
    public String doAction(String content) {
        if (StringUtils.isNotBlank(content)) {
            String[] ss = StringUtils.split(exp, ",");
            if (ss.length == 1) {
                return StringUtils.substringBetween(content, ss[0]);
            } else if (ss.length == 2) {
                return StringUtils.substringBetween(content, ss[0], ss[1]);
            } else if (ss.length == 3) {
                String[] contents = StringUtils.substringsBetween(content, ss[0], ss[1]);
                if (null != contents) {
                    StringBuilder sb = new StringBuilder();
                    for (String s : contents) {
                        sb.append(s).append(ss[2]);
                    }
                    return sb.substring(0, sb.length() - 1);
                }
            } else {
                return content;
            }
        }
        return "";
    }

    public static void main(String[] args) {
        // test
        String string = "abcdabcdefeacabfdsgdsadse";
        StringBetweenAction action = new StringBetweenAction("f");
        System.out.println(action.doAction(string));
        assert action.doAction(string) == "eacab";
        StringBetweenAction action2 = new StringBetweenAction("a,c");
        System.out.println(action2.doAction(string));
        assert action2.doAction(string) == "b";
        StringBetweenAction action3 = new StringBetweenAction("a,c,#");
        System.out.println(action3.doAction(string));

    }
}