コード例 #1
0
ファイル: 7zIn.cpp プロジェクト: 0963682490/omaha
void CInArchive::ReadUnpackInfo(
    const CObjectVector<CByteBuffer> *dataVector,
    CObjectVector<CFolder> &folders)
{
  WaitAttribute(NID::kFolder);
  CNum numFolders = ReadNum();

  {
    CStreamSwitch streamSwitch;
    streamSwitch.Set(this, dataVector);
    folders.Clear();
    folders.Reserve(numFolders);
    for (CNum i = 0; i < numFolders; i++)
    {
      folders.Add(CFolder());
      GetNextFolderItem(folders.Back());
    }
  }

  WaitAttribute(NID::kCodersUnpackSize);

  CNum i;
  for (i = 0; i < numFolders; i++)
  {
    CFolder &folder = folders[i];
    CNum numOutStreams = folder.GetNumOutStreams();
    folder.UnpackSizes.Reserve(numOutStreams);
    for (CNum j = 0; j < numOutStreams; j++)
      folder.UnpackSizes.Add(ReadNumber());
  }

  for (;;)
  {
    UInt64 type = ReadID();
    if (type == NID::kEnd)
      return;
    if (type == NID::kCRC)
    {
      CBoolVector crcsDefined;
      CRecordVector<UInt32> crcs;
      ReadHashDigests(numFolders, crcsDefined, crcs);
      for (i = 0; i < numFolders; i++)
      {
        CFolder &folder = folders[i];
        folder.UnpackCRCDefined = crcsDefined[i];
        folder.UnpackCRC = crcs[i];
      }
      continue;
    }
    SkipData();
  }
}
コード例 #2
0
ファイル: 7zIn.cpp プロジェクト: bks/qz7
void CInArchive::ReadPackInfo(
    UInt64 &dataOffset,
    CRecordVector<UInt64> &packSizes,
    CRecordVector<bool> &packCRCsDefined,
    CRecordVector<UInt32> &packCRCs)
{
    dataOffset = ReadNumber();
    CNum numPackStreams = ReadNum();

    WaitAttribute(NID::kSize);
    packSizes.Clear();
    packSizes.Reserve(numPackStreams);
    for (CNum i = 0; i < numPackStreams; i++)
        packSizes.Add(ReadNumber());

    UInt64 type;
    for (;;)
    {
        type = ReadID();
        if (type == NID::kEnd)
            break;
        if (type == NID::kCRC)
        {
            ReadHashDigests(numPackStreams, packCRCsDefined, packCRCs);
            continue;
        }
        SkeepData();
    }
    if (packCRCsDefined.IsEmpty())
    {
        packCRCsDefined.Reserve(numPackStreams);
        packCRCsDefined.Clear();
        packCRCs.Reserve(numPackStreams);
        packCRCs.Clear();
        for (CNum i = 0; i < numPackStreams; i++)
        {
            packCRCsDefined.Add(false);
            packCRCs.Add(0);
        }
    }
}
コード例 #3
0
ファイル: 7zIn.cpp プロジェクト: 0963682490/omaha
void CInArchive::ReadSubStreamsInfo(
    const CObjectVector<CFolder> &folders,
    CRecordVector<CNum> &numUnpackStreamsInFolders,
    CRecordVector<UInt64> &unpackSizes,
    CBoolVector &digestsDefined,
    CRecordVector<UInt32> &digests)
{
  numUnpackStreamsInFolders.Clear();
  numUnpackStreamsInFolders.Reserve(folders.Size());
  UInt64 type;
  for (;;)
  {
    type = ReadID();
    if (type == NID::kNumUnpackStream)
    {
      for (int i = 0; i < folders.Size(); i++)
        numUnpackStreamsInFolders.Add(ReadNum());
      continue;
    }
    if (type == NID::kCRC || type == NID::kSize)
      break;
    if (type == NID::kEnd)
      break;
    SkipData();
  }

  if (numUnpackStreamsInFolders.IsEmpty())
    for (int i = 0; i < folders.Size(); i++)
      numUnpackStreamsInFolders.Add(1);

  int i;
  for (i = 0; i < numUnpackStreamsInFolders.Size(); i++)
  {
    // v3.13 incorrectly worked with empty folders
    // v4.07: we check that folder is empty
    CNum numSubstreams = numUnpackStreamsInFolders[i];
    if (numSubstreams == 0)
      continue;
    UInt64 sum = 0;
    for (CNum j = 1; j < numSubstreams; j++)
      if (type == NID::kSize)
      {
        UInt64 size = ReadNumber();
        unpackSizes.Add(size);
        sum += size;
      }
    unpackSizes.Add(folders[i].GetUnpackSize() - sum);
  }
  if (type == NID::kSize)
    type = ReadID();

  int numDigests = 0;
  int numDigestsTotal = 0;
  for (i = 0; i < folders.Size(); i++)
  {
    CNum numSubstreams = numUnpackStreamsInFolders[i];
    if (numSubstreams != 1 || !folders[i].UnpackCRCDefined)
      numDigests += numSubstreams;
    numDigestsTotal += numSubstreams;
  }

  for (;;)
  {
    if (type == NID::kCRC)
    {
      CBoolVector digestsDefined2;
      CRecordVector<UInt32> digests2;
      ReadHashDigests(numDigests, digestsDefined2, digests2);
      int digestIndex = 0;
      for (i = 0; i < folders.Size(); i++)
      {
        CNum numSubstreams = numUnpackStreamsInFolders[i];
        const CFolder &folder = folders[i];
        if (numSubstreams == 1 && folder.UnpackCRCDefined)
        {
          digestsDefined.Add(true);
          digests.Add(folder.UnpackCRC);
        }
        else
          for (CNum j = 0; j < numSubstreams; j++, digestIndex++)
          {
            digestsDefined.Add(digestsDefined2[digestIndex]);
            digests.Add(digests2[digestIndex]);
          }
      }
    }
    else if (type == NID::kEnd)
    {
      if (digestsDefined.IsEmpty())
      {
        BoolVector_Fill_False(digestsDefined, numDigestsTotal);
        digests.Clear();
        for (int i = 0; i < numDigestsTotal; i++)
          digests.Add(0);
      }
      return;
    }
    else
      SkipData();
    type = ReadID();
  }
}