【轉】C++ ZLib壓縮與解壓縮
阿新 • • 發佈:2019-01-07
- #include "stdafx.h"
- #include "zlib.h"
- #include <iostream>
- using namespace std;
- #pragma comment(lib,"zlib.lib")
- int _tmain(int argc, _TCHAR* argv[])
- {
- int err;
- Byte compr[200], uncompr[200]; //足夠大
- uLong comprLen, uncomprLen;
- const char* hello = "1234567890"; //原文
- uLong len = strlen(
- comprLen = sizeof(compr) / sizeof(compr[0]);
- err = compress(compr, &comprLen, (const Bytef*)hello, len);
- if (err != Z_OK)
- {
- cerr << "壓縮錯誤: " << err << '\n ';
- }
- cout << "原文長度: " << len << "\n壓縮後長度:" << comprLen <
- strcpy((char*)uncompr, "garbage ");
- err = uncompress(uncompr, &uncomprLen, compr, comprLen);
- if (err != Z_OK)
- {
- cerr << "解壓錯誤: " << err << '\n ';
- }
- cout << "\n原文長度:" << len << "\n解壓後長度:" << uncomprLen <
- if (strcmp((char*)uncompr, hello))
- {
- cerr << "\n解壓失敗!!!\n ";
- }
- else
- {
- cout << "\n解壓成功:" << (char*)uncompr;
- }
- FILE *f= fopen("d:\\b1.bin","wb");
- fwrite(compr,comprLen,1,f);
- fclose(f);
- getchar();
- return 0;
- }