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package org.usc.file.operater.rules;

/**
 * 前缀转换
 * 
 * @author ShunLi
 * @notes Created on 2010-12-11

 *        Revision of last commit:$Revision$

 *        Author of last commit:$Author$

 *        Date of last commit:$Date$

 *        
 */
public class PrefixConvertRule implements ConvertRule {

    @Override
    public String reNameByRule(String oldName) {
        return reNameByRule(oldName, "", "");
    }

    @Override
    public String reNameByRule(String oldName, String fix, String newFix) {

        if (fix == null || fix.trim().length() == 0) {
            return newFix.concat(oldName);
        } else {
            if (oldName.indexOf(fix) != -1 && fix.equals(oldName.substring(0, fix.length()))) {
                return newFix.concat(oldName.substring(fix.length()));
            }
            return oldName;
        }
    }

    @Override
    public String reNameByRule(String oldName, String fix, String newFix, Boolean isFolder) {
        int index = oldName.lastIndexOf("\\");
        if (index != -1) {
            return oldName.substring(0, index + 1).concat(reNameByRule(oldName.substring(index + 1), fix, newFix));
        } else {
            return reNameByRule(oldName, fix, newFix);
        }
    }
}