zlib压缩库

描述：一个非常漂亮但又不显眼的压缩库。

官网：zlib Home Site

github：https://github.com/madler/zlib

版本：v1.2.12

编译方法：./configure; make test;make install

默认生成库和头文件目录：/usr/local/lib /usr/local/include

库：libz.so.1.2.12 libz.a

头文件：zconf.h zlib.h

集成demo：

#include<iostream>
#include<string>

#include"zlib.h"

using namespace std;

int main()
{
  unsigned char  srcstr[] = "0123456789abcdefghijklmnopqrstuvwxyz0123456789abcdefghijklmnopqrstuvwxyz0123456789abcdefghijklmnopqrstuvwxyz0123456789abcdefghijklmnopqrstuvwxyz";

  cout << "src file length = " << sizeof(srcstr) << endl;

  unsigned char dstbuf[1024] = {0};
  unsigned long  buflen = sizeof(dstbuf);
  int ret = compress2(dstbuf, &buflen, srcstr, sizeof(srcstr), 9);

  cout << "dst compress length = "<< buflen << endl;
  return 0;
}

运行结果：

src file length = 145
dst compress file length = 48