package org.jeecg.common.util;
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import io.netty.util.internal.StringUtil;
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/**
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* 流水号生成规则(按默认规则递增，数字从1-99开始递增，数字到99，递增字母;位数不够增加位数)
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* A001
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* A001A002
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* @Author zhangdaihao
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*
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*/
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public class YouBianCodeUtil {
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// 数字位数(默认生成3位的数字)
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/**代表数字位数*/
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private static final int NUM_LENGTH = 2;
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public static final int ZHANWEI_LENGTH = 1+ NUM_LENGTH;
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public static final char LETTER= 'Z';
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/**
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* 根据前一个code，获取同级下一个code
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* 例如:当前最大code为D01A04，下一个code为：D01A05
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*
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* @param code
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* @return
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*/
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public static synchronized String getNextYouBianCode(String code) {
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String newcode = "";
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if (oConvertUtils.isEmpty(code)) {
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String zimu = "A";
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String num = getStrNum(1);
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newcode = zimu + num;
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} else {
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String beforeCode = code.substring(0, code.length() - 1- NUM_LENGTH);
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String afterCode = code.substring(code.length() - 1 - NUM_LENGTH,code.length());
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char afterCodeZimu = afterCode.substring(0, 1).charAt(0);
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Integer afterCodeNum = Integer.parseInt(afterCode.substring(1));
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// org.jeecgframework.core.util.LogUtil.info(after_code);
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// org.jeecgframework.core.util.LogUtil.info(after_code_zimu);
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// org.jeecgframework.core.util.LogUtil.info(after_code_num);
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String nextNum = "";
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char nextZimu = 'A';
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// 先判断数字等于999*，则计数从1重新开始，递增
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if (afterCodeNum == getMaxNumByLength(NUM_LENGTH)) {
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nextNum = getNextStrNum(0);
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} else {
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nextNum = getNextStrNum(afterCodeNum);
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}
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// 先判断数字等于999*，则字母从A重新开始,递增
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if(afterCodeNum == getMaxNumByLength(NUM_LENGTH)) {
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nextZimu = getNextZiMu(afterCodeZimu);
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}else{
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nextZimu = afterCodeZimu;
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}
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// 例如Z99，下一个code就是Z99A01
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if (LETTER == afterCodeZimu && getMaxNumByLength(NUM_LENGTH) == afterCodeNum) {
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newcode = code + (nextZimu + nextNum);
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} else {
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newcode = beforeCode + (nextZimu + nextNum);
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}
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}
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return newcode;
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}
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/**
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* 根据父亲code,获取下级的下一个code
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*
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* 例如：父亲CODE:A01
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* 当前CODE:A01B03
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* 获取的code:A01B04
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*
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* @param parentCode 上级code
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* @param localCode 同级code
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* @return
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*/
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public static synchronized String getSubYouBianCode(String parentCode,String localCode) {
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if(localCode!=null && localCode!=""){
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// return parentCode + getNextYouBianCode(localCode);
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return getNextYouBianCode(localCode);
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}else{
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parentCode = parentCode + "A"+ getNextStrNum(0);
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}
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return parentCode;
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}
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/**
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* 将数字前面位数补零
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*
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* @param num
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* @return
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*/
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private static String getNextStrNum(int num) {
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return getStrNum(getNextNum(num));
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}
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/**
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* 将数字前面位数补零
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*
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* @param num
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* @return
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*/
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private static String getStrNum(int num) {
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String s = String.format("%0" + NUM_LENGTH + "d", num);
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return s;
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}
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/**
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* 递增获取下个数字
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*
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* @param num
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* @return
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*/
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private static int getNextNum(int num) {
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num++;
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return num;
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}
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/**
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* 递增获取下个字母
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*
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* @param num
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* @return
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*/
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private static char getNextZiMu(char zimu) {
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if (zimu == LETTER) {
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return 'A';
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}
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zimu++;
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return zimu;
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}
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/**
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* 根据数字位数获取最大值
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* @param length
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* @return
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*/
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private static int getMaxNumByLength(int length){
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if(length==0){
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return 0;
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}
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StringBuilder maxNum = new StringBuilder();
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for (int i=0;i<length;i++){
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maxNum.append("9");
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}
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return Integer.parseInt(maxNum.toString());
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}
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public static String[] cutYouBianCode(String code){
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if(code==null || StringUtil.isNullOrEmpty(code)){
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return null;
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}else{
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//获取标准长度为numLength+1,截取的数量为code.length/numLength+1
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int c = code.length()/(NUM_LENGTH +1);
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String[] cutcode = new String[c];
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for(int i =0 ; i <c;i++){
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cutcode[i] = code.substring(0,(i+1)*(NUM_LENGTH +1));
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}
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return cutcode;
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}
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}
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// public static void main(String[] args) {
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// // org.jeecgframework.core.util.LogUtil.info(getNextZiMu('C'));
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// // org.jeecgframework.core.util.LogUtil.info(getNextNum(8));
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// // org.jeecgframework.core.util.LogUtil.info(cutYouBianCode("C99A01B01")[2]);
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// }
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}
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