使用zzip和minizip解压缩文件_minizip 内存压缩-优快云博客

本文介绍了一个C++程序，该程序能够读取指定的ZIP文件内容，并将其解压后重新打包成新的ZIP文件。程序使用了Zzip、Minizip等库来实现ZIP文件的操作，包括遍历源ZIP文件中的所有条目、读取每个文件的数据并存储到内存中，然后创建一个新的ZIP文件并将原始数据写入。

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#include <zzip/zzip.h> #include <zlib.h> #include <zip.h> #include <unzip.h> #include <string> #include <map> #ifdef _DEBUG#pragma comment( lib, "zlib_d.lib") #pragma comment( lib, "zzip_d.lib") #pragma comment( lib, "minizip_d.lib") #else #pragma comment( lib, "zlib.lib" ) #pragma comment( lib, "zzip.lib" ) #pragma comment( lib, "minizip.lib" ) #endif#define SAFE_DELETEARRAY(p) if(p != NULL) { delete[] (p); (p) = NULL; }; void UnzipAndZip( const char* pScrFileName, const char* pDstFileName ) { struct FILE_DESC { unsigned char* pData; size_t DataSize; }; std::map<std::string, FILE_DESC> mapFileStreams; ZZIP_DIR* pZipDir = zzip_opendir( pScrFileName ); ZZIP_DIRENT* pZipDirent = NULL; while( pZipDirent = zzip_readdir( pZipDir ) ) { size_t length = strlen(pZipDirent->d_name); if( length > 0 ) { if( pZipDirent->d_name[length - 1] != '//' && pZipDirent->d_name[length - 1] != '/' ) { ZZIP_FILE* pZipFile = zzip_file_open( pZipDir, pZipDirent->d_name, ZZIP_CASELESS ); if( pZipFile != NULL ) { ZZIP_STAT sz; memset( &sz, 0, sizeof(sz) ); zzip_file_stat( pZipFile, &sz ); if( sz.st_size > 0 ) { unsigned char* pBuffer = new unsigned char[sz.st_size]; zzip_file_read( pZipFile, pBuffer, sz.st_size ); FILE_DESC data = { pBuffer, sz.st_size }; mapFileStreams[pZipDirent->d_name] = data; } zzip_file_close( pZipFile ); } } } } if( pZipDir ) zzip_closedir( pZipDir ); zip_fileinfo ZipFileInfo; zipFile ZipFile = zipOpen( pDstFileName, 0 ); std::map<std::string, FILE_DESC>::iterator iter = mapFileStreams.begin(); while( iter != mapFileStreams.end() ) { int err = zipOpenNewFileInZip( ZipFile, iter->first.c_str(), &ZipFileInfo, NULL, 0, NULL, 0, NULL, 0, 0 ); zipWriteInFileInZip( ZipFile, iter->second.pData, iter->second.DataSize ); SAFE_DELETEARRAY( iter->second.pData ); ++iter; } zipClose( ZipFile, NULL ); } int main(int argc, char* argv[]) { UnzipAndZip( "test.zip", "dst.zip" ); return 0; };