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VariableExpander.java
Package: jforum-2.1.8-src.zip [view]
Upload User: gdxydsw
Upload Date: 2019-01-29
Package Size: 16721k
Code Size: 3k
Category:
Java Develop
Development Platform:
Java
- /*
- * Copyright (c) JForum Team
- * All rights reserved.
- * Redistribution and use in source and binary forms,
- * with or without modification, are permitted provided
- * that the following conditions are met:
- * 1) Redistributions of source code must retain the above
- * copyright notice, this list of conditions and the
- * following disclaimer.
- * 2) Redistributions in binary form must reproduce the
- * above copyright notice, this list of conditions and
- * the following disclaimer in the documentation and/or
- * other materials provided with the distribution.
- * 3) Neither the name of "Rafael Steil" nor
- * the names of its contributors may be used to endorse
- * or promote products derived from this software without
- * specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT
- * HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
- * EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
- * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS FOR A PARTICULAR
- * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
- * THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
- * EXEMPLARY, OR CONSEQUENTIAL DAMAGES
- * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
- * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
- * OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
- * IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
- * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
- * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE
- *
- * Created on May 31, 2004 by pieter
- * The JForum Project
- * http://www.jforum.net
- */
- package net.jforum.util.preferences;
- import java.util.HashMap;
- import java.util.Map;
- /**
- * @author Pieter
- * @author Rafael Steil
- * @version $Id: VariableExpander.java,v 1.6 2006/08/20 22:47:37 rafaelsteil Exp $
- */
- public class VariableExpander
- {
- private VariableStore variables;
- private String pre;
- private String post;
- private Map cache;
- public VariableExpander(VariableStore variables, String pre, String post)
- {
- this.variables = variables;
- this.pre = pre;
- this.post = post;
- cache = new HashMap();
- }
- public void clearCache()
- {
- cache.clear();
- }
- public String expandVariables(String source)
- {
- String result = (String)this.cache.get(source);
- if (source == null || result != null) {
- return result;
- }
- int fIndex = source.indexOf(this.pre);
- if (fIndex == -1) {
- return source;
- }
- StringBuffer sb = new StringBuffer(source);
- while (fIndex > -1) {
- int lIndex = sb.indexOf(this.post);
- int start = fIndex + this.pre.length();
- if (fIndex == 0) {
- String varName = sb.substring(start, start + lIndex - this.pre.length());
- sb.replace(fIndex, fIndex + lIndex + 1, this.variables.getVariableValue(varName));
- }
- else {
- String varName = sb.substring(start, lIndex);
- sb.replace(fIndex, lIndex + 1, this.variables.getVariableValue(varName));
- }
- fIndex = sb.indexOf(this.pre);
- }
- result = sb.toString();
- this.cache.put(source, result);
- return result;
- }
- }