c語言使用zlib實現文本字元的gzip壓縮與gzip解壓縮

標籤：

網路上找到的好多方法在解壓縮字串的時候會丟失字元，這裡是解決方案:

http://stackoverflow.com/questions/21186535/compressing-decompressing-char-array-using-zlib-some-characters-missing

基於此，筆者修改了一下，由於是初學者，只按照編譯器不報錯的原則修改了一下，能運行

開啟vc++6.0建立控制台程式程式,配置好zdll.lib,把zlib1.dll放置到合適的位置
主程式main.cpp如下
#include <string.h>#include <stdio.h>#include <stdlib.h>#include "zlib.h"int main(){  const char *istream = "some foo漢字";  uLong srcLen = strlen(istream)+1;      // +1 for the trailing `\0`  uLong destLen = compressBound(srcLen); // this is how you should estimate size                                          // needed for the buffer  unsigned char* ostream = (unsigned char*)malloc(destLen);  int res = compress(ostream, &destLen, (const unsigned char *)istream, srcLen);   // destLen is now the size of actuall buffer needed for compression  // you don‘t want to uncompress whole buffer later, just the used part  if(res == Z_BUF_ERROR){    printf("Buffer was too small!\n");    return 1;  }  if(res ==  Z_MEM_ERROR){    printf("Not enough memory for compression!\n");    return 2;  }  unsigned char *i2stream = ostream;  char* o2stream = (char *)malloc(srcLen);  uLong destLen2 = destLen; //destLen is the actual size of the compressed buffer  int des = uncompress((unsigned char *)o2stream, &srcLen, i2stream, destLen2);  printf("%s\n", o2stream);  return 0;}

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c語言使用zlib實現文本字元的gzip壓縮與gzip解壓縮