?? dataformat.java
字號(hào):
/**
*
*/
package com.aceway.vas.sjcraw.cbgp201.common;
/**
* 標(biāo)題: 華為彩鈴平臺(tái)接口規(guī)范 說明: 版權(quán): Copyright(c) 2007 公司: 北京漢銘信通科技有限公司 部門: 增值業(yè)務(wù)部 作者: 武達(dá)
* May 28, 2007
*/
public class DataFormat {
public DataFormat() {
}
public static String makeTempStr(int len){
return makeString("#", len);
}
public static String makeString(String str, int len) {
if (str == null || str.length() > len) {
return null;
}
String result = str;
for (int i = 0; i < len - str.length(); i++) {
result = result + " ";
}
return result;
}
public static String makeInteger(String str, int len) {
if (str == null || str.length() > len) {
return null;
}
String result = str;
for (int i = 0; i < len - str.length(); i++) {
result = "0" + result;
}
return result;
}
public static String makeInteger(int iVar, int len) {
return makeInteger(String.valueOf(iVar), len);
}
public static String makeDouble(double dvar, int len) {
String str = String.valueOf(dvar);
str = str.substring(0, str.lastIndexOf("."));
return makeInteger(str, len);
}
public static String makeInteger(long lvar, int len) {
String str = String.valueOf(lvar);
return makeInteger(str, len);
}
public static int bytes2int(byte[] b) {
int mask = 0xff;
int temp = 0;
int res = 0;
for (int i = 0; i < 4; i++) {
res <<= 8;
temp = b[i] & mask;
res |= temp;
}
return res;
}
public static byte[] int2bytes(int num) {
byte[] b = new byte[4];
int mask = 0xff;
for (int i = 0; i < 4; i++) {
b[i] = (byte) (num >>> (24 - i * 8));
}
return b;
}
public static int byte2int(byte b[], int offset) {
return b[offset + 3] & 0xff | (b[offset + 2] & 0xff) << 8
| (b[offset + 1] & 0xff) << 16 | (b[offset] & 0xff) << 24;
}
}
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