c++ zlib(qt)压缩与解压缩

#include <QtCore/QCoreApplication>

#include "zlib.h"

#include "stdio.h"

#include <iostream>

using   namespace   std;

 

#define MaxBufferSize 999999

 

void Test1();

void Test2();

 

int main(int argc, char *argv[])

{

    QCoreApplication a(argc, argv);

 

    //Test1();

    Test2();

     

    return a.exec();

}

 

//c++ zlib

void Test1()

{

    FILE* File_src;

    FILE* File_compress;

    FILE* File_uncompress;

 

    unsigned long len_src;

    unsigned long len_compress;

    unsigned long len_uncompress;

 

    unsigned char *buffer_src  = new unsigned char[MaxBufferSize];

    unsigned char *buffer_compress  = new unsigned char[MaxBufferSize];

    unsigned char *buffer_uncompress = new unsigned char[MaxBufferSize];

 

    File_src = fopen("src.txt","r");

    File_compress = fopen("compress.txt","w");

    File_uncompress = fopen("uncompress.txt","w");

 

    //compress

    len_src = fread(buffer_src,sizeof(char),MaxBufferSize-1,File_src);

    compress(buffer_compress,&len_compress,buffer_src,len_src);

    fwrite(buffer_compress,sizeof(char),len_compress,File_compress);

    cout << "normal zlib:" << endl;

    cout << "src:\n" << buffer_src << ",length:" << len_src << endl << endl;

    cout << "compress:\n" << buffer_compress << ",length:" << len_compress << endl << endl;

 

    //uncompress

    uncompress(buffer_uncompress,&len_uncompress,buffer_compress,len_compress);

    fwrite(buffer_uncompress,sizeof(char),len_uncompress,File_uncompress);

    cout << "uncompress:\n" << buffer_uncompress << ",length:" << len_uncompress << endl << endl;

 

    fclose(File_src);

    fclose(File_compress);

    fclose(File_uncompress);

}

 

//qt zlib

void Test2()

{

    QByteArray src;

    src.append("中华人民共和国,china mobile,123456");

 

    unsigned long len_compress;

    unsigned long len_uncompress;

 

    unsigned char *buffer_compress  = new unsigned char[MaxBufferSize];

    unsigned char *buffer_uncompress = new unsigned char[MaxBufferSize];

 

    compress(buffer_compress,&len_compress,(Bytef*)src.data(), src.length());

    uncompress(buffer_uncompress,&len_uncompress,buffer_compress,len_compress);

 

    cout << "qt zlib:" << endl;

    cout << "src:\n" << src.data() << ",length:" << src.size() << endl << endl;

    cout << "compress:\n" << buffer_compress << ",length:" << len_compress << endl << endl;

    cout << "uncompress:\n" << buffer_uncompress << ",length:" << len_uncompress << endl << endl;

}