Multithreaded Zip Search

• Download source files - 156 Kb
• Download demo project - 32.5 Kb

Introduction

Background

This app uses CZipArchive class, for more about this CZipArchive information follow the link

• http://www.codeproject.com/cpp/zip.asp?target=ziparchive[^]

void CZipSearchDlg::EnumerateDirectory(CString Directory)
{
  int nCount,i;
  CString strFilename;
  BOOL bResult;
  CFileFind ZIPFiles;
  CZipArchive ZIPFile;
  CZipFileHeader ZIPFileHeader;
  CLike CompareLike;
  CString strStatus;
  BOOL bDisplayStatus=TRUE;
  SHFILEINFO    sfi;

  LV_ITEM lvItem;struct ItemFile *ifFile;

  Directory.TrimLeft();Directory.TrimRight();
  if(Directory.Right(1)=="\\")
    bResult=ZIPFiles.FindFile(Directory+"*.*");
  else
    bResult=ZIPFiles.FindFile(Directory+"\\"+"*.*");
  //Does the recursive search
  while(bResult && !m_bStopEnumeration && !m_bSkipDirectory)
  {
    if(bDisplayStatus)
    {
      strStatus.Format("Processing %s",Directory);
      m_wndStatusBar.SetText(strStatus,0,0);
      bDisplayStatus=TRUE;
    }
    bResult=ZIPFiles.FindNextFile();
    if(!ZIPFiles.IsDots())
      if(ZIPFiles.IsDirectory())
      {
        //Calls itself again
        EnumerateDirectory(ZIPFiles.GetFilePath());
        bDisplayStatus=TRUE;
      }
      else
      {
        strFilename=ZIPFiles.GetFileName();
        strFilename.MakeUpper();
        //Checks whether it is a ZIP file or not.
        if(strFilename.Right(3)=="ZIP")
        {
          try
          {
            ZIPFile.Open(ZIPFiles.GetFilePath());
            nCount=ZIPFile.GetNoEntries();
            if(nCount>50)
            {
              //Updates the statusbar
              strStatus.Format("Processing %s", ZIPFiles.GetFilePath());
              m_wndStatusBar.SetText(strStatus,0,0);
              m_wndProgressSearch.SetRange(0,nCount-1);
              m_wndProgressSearch.ShowWindow(SW_SHOW);
            }
            //Searches inside ZIP file
            for(i=0; i<nCount && !m_bStopEnumeration &&
                !m_bSkipDirectory && !m_bSkipFile;i++)
            {
              if(nCount>10)
                m_wndProgressSearch.SetPos(i);
              ZIPFile.GetFileInfo(ZIPFileHeader,(WORD)i);
              if(CompareLike.IsLike(ZIPFileHeader.GetFileName(), 
                m_strFilename))
              {
                SHGetFileInfo(ZIPFileHeader.GetFileName(),
                  0,&sfi,sizeof(SHFILEINFO),
                  SHGFI_USEFILEATTRIBUTES|SHGFI_SYSICONINDEX|
                  SHGFI_TYPENAME|
                  (m_lvResult.GetStyle()&
                     LVS_ICON?SHGFI_LARGEICON:SHGFI_SMALLICON));

                ifFile=new ItemFile;
                ifFile->strFilename=ZIPFileHeader.GetFileName();
                ifFile->strType=sfi.szTypeName;
                if(ifFile->strType.IsEmpty())
                if(ifFile->strFilename.ReverseFind('.')>0)
                {
                  ifFile->strType=ifFile->strFilename.Right((
                    ifFile->strFilename.GetLength() -
                    ifFile->strFilename.ReverseFind('.'))-1);
                  ifFile->strType.MakeUpper();
                  ifFile->strType+=" File";
                }
                else
                  ifFile->strType="Unknown";
                // If it satisfies the search criteria then obtain the file 
                // information and it's associated icon
                ifFile->strSize.Format("%u KB",
                  (ZIPFileHeader.m_uUncomprSize/1024)?
                  (ZIPFileHeader.m_uUncomprSize/1024):1);
                ifFile->strZIPFilename=ZIPFiles.GetFileName();
                ifFile->strPath=ZIPFiles.GetRoot();
                                
                lvItem.mask=LVIF_TEXT|LVIF_IMAGE|LVIF_PARAM;
                lvItem.iItem=m_lvResult.GetItemCount();
                lvItem.iSubItem=0;
                lvItem.iImage=sfi.iIcon;
                lvItem.pszText=(LPSTR)ifFile->strFilename.operator LPCTSTR();
                lvItem.lParam=(LPARAM)ifFile;
                m_lvResult.InsertItem(&lvItem);
                                
                }
              }
              if(nCount>10)
              {
                m_wndProgressSearch.ShowWindow(SW_HIDE);
                bDisplayStatus=TRUE;
              }
              m_bSkipFile=FALSE;
              ZIPFile.Close();                    
            }
            catch(...)
            {
              if(!ZIPFile.IsClosed())
                ZIPFile.Close();
            }
          }    
       }
    }
  m_bSkipDirectory=FALSE;
  ZIPFiles.Close();
}

Points of Interest

History

• ZipSearch Version 1.0 – First Release

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