egret加入第三方库zlib
github找一个库，地址如下：https://github.com/imaya/zlib.js
1、创建第三方库项目：
egret create_lib zlib
2、新建bin目录，copy zlib.min.js到bin下
3、编写zlib.min.d.ts
内容：
declare namespace Zlib {
interface Inflate {
constructor(data:any);
decompress(): any;
}
interface Deflate {
constructor(data:any);
compress():any;
}
}
4、将zlib项目剪切到项目同级目录
5、在egretProperties.json里面加入：
{
"name": "zlib",
"path": "./../zlib"
}
6、打开index.html页面嵌入js文件
<script type="text/javascript" src="/libs/modules/zlib/zlib.min.js"></script>
7、编写工具类ByteUtil.ts
class ByteUtil {
public constructor() {
}
/* 压缩 二进制数据
* @param bytes
* @returns Array.<number> or Uint8Array
*/
public static compress(bytes: egret.ByteArray): any {
let byte8 = new Uint8Array(bytes.buffer);
let defate = new Zlib.Deflate(byte8);
let compressed = defate.compress();
return compressed;
}
/**
* 解压 二进制数据
* @param compressed Array.<number> or Uint8Array
*/
public static uncompress(compressed: Uint8Array): egret.ByteArray {
let inflate = new Zlib.Inflate(compressed);
let plain = inflate.decompress();
let plainByte: egret.ByteArray = new egret.ByteArray(plain);
return plainByte;
}
/**
* 解压 返回文本数据
* @param compressed Array.<number> or Uint8Array
*/
public static uncompressTxt(compressed: any): string {
let data = null;
if (compressed instanceof ArrayBuffer) {
data = new Uint8Array(compressed);
} else if (compressed instanceof Uint8Array) {
data = compressed;
}
if (data != null) {
let plainByte: egret.ByteArray = ByteUtil.uncompress(data);
plainByte.position = 0;
return plainByte.readUTFBytes(plainByte.length);
} else {
return null;
}
}
}
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