Symbian Zip解压问题

来源：互联网发布：下载数据恢复编辑：程序博客网时间：2024/05/16 11:30

Symbian提供了解压ZIP的API，调用可以解压文件。如果知道zip文件中有什么文件，调用api进行解压还马马虎虎。

在实际应用中，如果需要解压某个zip文件，往往不知道这个压缩包中有些什么东西，但要求全部解压出来，这就不太好办了。

其实也可以把zip压缩包中的文件的文件名都列举出来，然后就可以依次读取每个文件了。

TInt CZipMgr::UnZipAd(){    TInt nRet = 0;    CDesCArray* filesList;    TInt nIdx = 0;    filesList = new (ELeave) CDesCArrayFlat(30);        if(iZipFile)    {        delete iZipFile;        iZipFile = NULL;    }                TBuf<260>    strZipPath;        strZipPath.Append(_L("attach.zip"));    if(!CFileUtils::FileExists(strZipPath))        goto END;        iZipFile = CZipFile::NewL(iFs, strZipPath);        nRet = GetZipedFiles(*filesList);    if(0 >= nRet)        goto END;        for(nIdx = 0; nIdx < filesList->Count(); ++nIdx)    {        TFileName     strFName;                        strFName.Copy((*filesList)[nIdx]);                UnZipFile(strFName);            }END:    filesList->Reset();        delete filesList;        return nRet;}TInt CZipMgr::GetZipedFiles(CDesCArray& aFiles){    TInt nRet = 0;    aFiles.Reset();    if(!iZipFile)        goto END;        CZipFileMemberIterator* members = iZipFile->GetMembersL();    if(!members)        goto END;        CZipFileMember*         pMem = members->NextL();    while(pMem)    {        aFiles.AppendL(*pMem->Name());        delete pMem;        pMem = NULL;        pMem = members->NextL();            }        nRet = aFiles.Count();END:    if(members)        delete members;    return nRet;}void CZipMgr::UnZipFile(const TDesC& aFile){    if(aFile[aFile.Length() - 1] == '\\')    {        return;    }        if(!iZipFile)        return;            TFileName    strDescPath;        strDescPath.Copy(strRootPath);        strDescPath.Append(aFile);        RZipFileMemberReaderStream* stream = NULL;        CZipFileMember* member =iZipFile->CaseInsensitiveMemberL(aFile);    if(!member)        goto END;            if(KErrNone != iZipFile->GetInputStreamL(member, stream) )    {        goto END;    }        HBufC8* buffer =HBufC8::NewL(member->UncompressedSize());    TPtr8 bufferPtr(buffer->Des());    User::LeaveIfError(stream->Read(bufferPtr, member->UncompressedSize()));        CFileUtils::Save(strDescPath, buffer->Des());END:    if(member)        delete member;    member = NULL;        if(stream)        delete stream;    stream = NULL;        if(buffer)        delete buffer;    buffer = NULL;}