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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.isNullOrEmpty;
import static com.feilong.core.lang.StringUtil.EMPTY;
import static com.feilong.taglib.display.httpconcat.builder.HttpConcatGlobalConfigBuilder.GLOBAL_CONFIG;

import com.feilong.lib.lang3.StringUtils;
import com.feilong.taglib.display.httpconcat.builder.HttpConcatGlobalConfigBuilder;

/**
 * version 值格式化.
 *
 * @author feilong
 * @since 1.11.1
 */
public final class VersionFormatter{

    //---------------------------------------------------------------
    /** Don't let anyone instantiate this class. */
    private VersionFormatter(){
        //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!");
    }

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

    /**
     * Format.
     *
     * @param version
     *            the version
     * @return 如果 version 是null或者是 empty,那么直接返回 {@link StringUtils#EMPTY}
* 如果 version 有值,判断 {@link HttpConcatGlobalConfigBuilder#GLOBAL_CONFIG} versionEncode 配置, 如果没有配置, 那么直接返回 version参数
* 如果有值, 那么将调用 {@link VersionEncodeUtil#encode(String, String)}
* @see com.feilong.taglib.display.httpconcat.handler.VersionEncodeUtil#encode(String, String) */ public static String format(String version){ if (isNullOrEmpty(version)){ return EMPTY; } //--------------------------------------------------------------- String versionEncode = GLOBAL_CONFIG.getVersionEncode(); if (isNullOrEmpty(versionEncode)){ return version; } return VersionEncodeUtil.encode(version, versionEncode); } }




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