完整文件打包解包

void CPackDlg::OnBtnPack() { // TODO: Add your control notification handler code here CFileDialog savedlg(FALSE,NULL,NULL,OFN_HIDEREADONLY | OFN_OVERWRITEPROMPT,"(类型：*.free)|*.free||"); if (IDOK != savedlg.DoModal()) return; int nTimeBegin = time(NULL); int nMiliTimeBegin = timeGetTime(); CString strPathName = savedlg.GetPathName(); CString strExt = savedlg.GetFileExt(); if (strExt!="free") strPathName+=".free"; int nFileNum = m_listFile.GetCount(); m_progress.SetRange(0,nFileNum); FILE* pFilePack = fopen&#40;strPathName.GetBuffer(0&#41;,"wb"); if(!pFilePack) return; int nNumWrite = fwrite(&nFileNum;,sizeof(int),1,pFilePack); for (int i=0;i<nFileNum;i++) { CString str; m_listFile.GetText(i,str); int nFileNameLen = str.GetLength(); fwrite(&nFileNameLen;,sizeof(int),1,pFilePack); fwrite(str.GetBuffer(0),1,nFileNameLen,pFilePack); FILE* pFileOri = fopen&#40;str.GetBuffer(0&#41;,"rb"); if (!pFileOri) { char buf[256]; sprintf(buf,"文件:\"%s\"不存在,打包失败!",str.GetBuffer(0)); fclose(pFilePack); MessageBox(buf); return; } fseek(pFileOri,0,SEEK_END); int nFileSize = ftell(pFileOri); fwrite(&nFileSize;,1,sizeof(int),pFilePack); fseek(pFileOri,0,SEEK_SET); // //方法一：这种方法效率比较低 // while(nFileSize--&gt;0) // { // char c; // fread(&c,1,1,pFileOri); // fwrite(&c,1,1,pFilePack); // } //方法二：这种方法效率比较高 char *pBuf = new char[nFileSize]; fread(pBuf,1,nFileSize,pFileOri); fwrite(pBuf,1,nFileSize,pFilePack); delete []pBuf; m_progress.SetPos(i+1); fclose(pFileOri); } fclose(pFilePack); int nTimeEnd = time(NULL); int nMiliTimeEnd = timeGetTime(); char bufTime[128] = ""; char bufMiliTime[128] = ""; sprintf(bufTime,"打包用时:%d秒",nTimeEnd-nTimeBegin); sprintf(bufMiliTime,"打包用时:%d毫秒",nMiliTimeEnd-nMiliTimeBegin); if (nTimeEnd-nTimeBegin==0) MessageBox(bufMiliTime); else MessageBox(bufTime); } void CPackDlg::OnBtnUnpack() { // TODO: Add your control notification handler code here CString strPathName; m_editFileName2.GetWindowText(strPathName); //ASSERT(PathFileExists(str)); if (!PathFileExists(strPathName)) { MessageBox("文件不存在!"); return; } FILE* pFile = fopen&#40;strPathName.GetBuffer(0&#41;,"rb"); if (!pFile) { MessageBox("文件打开失败!"); return; } int nTimeBegin = time(NULL); int nMiliTimeBegin = timeGetTime(); CString strPath = strPathName; strPath.MakeReverse(); int nIndex = strPath.Find("\\"); strPath.MakeReverse(); strPath = strPath.Left(strPath.GetLength()-nIndex); int nFileNum = 0; fread(&nFileNum;,4,1,pFile); m_progress2.SetRange(0,nFileNum); m_progress2.SetStep(1); for (int i=0;i<nFileNum;i++) { //m_progress2.SetPos(i+1); int nFileNameLen = 0; fread(&nFileNameLen;,4,1,pFile); char szFileName[128] = ""; fread(szFileName,1,nFileNameLen,pFile); CString strFileName = PathFindFileName(szFileName); strFileName = strPath+strFileName; m_listFile2.AddString(strFileName); UpdateData(false); FILE* pFilePack = fopen&#40;strFileName,"wb"&#41;; if (!pFilePack) return; int nFileSize = 0; fread(&nFileSize;,4,1,pFile); char* pData = new char[nFileSize]; fread(pData,1,nFileSize,pFile); fwrite(pData,1,nFileSize,pFilePack); delete []pData; fclose(pFilePack); m_progress2.StepIt(); } fclose(pFile); int nTimeEnd = time(NULL); int nMiliTimeEnd = timeGetTime(); char bufTime[128] = ""; char bufMiliTime[128] = ""; sprintf(bufTime,"解包用时:%d秒",nTimeEnd-nTimeBegin); sprintf(bufMiliTime,"解包用时:%d毫秒",nMiliTimeEnd-nMiliTimeBegin); if (nTimeEnd-nTimeBegin==0) MessageBox(bufMiliTime); else MessageBox(bufTime); }