/**
 * 
 */
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;
	}

}