diff options
Diffstat (limited to 'other-licenses/7zstub/src/CPP/7zip/Archive/SplitHandler.cpp')
| -rw-r--r-- | other-licenses/7zstub/src/CPP/7zip/Archive/SplitHandler.cpp | 359 |
1 files changed, 359 insertions, 0 deletions
diff --git a/other-licenses/7zstub/src/CPP/7zip/Archive/SplitHandler.cpp b/other-licenses/7zstub/src/CPP/7zip/Archive/SplitHandler.cpp new file mode 100644 index 000000000..ffb0e3343 --- /dev/null +++ b/other-licenses/7zstub/src/CPP/7zip/Archive/SplitHandler.cpp @@ -0,0 +1,359 @@ +// SplitHandler.cpp
+
+#include "StdAfx.h"
+
+#include "../../Common/ComTry.h"
+#include "../../Common/MyString.h"
+
+#include "../../Windows/PropVariant.h"
+
+#include "../Common/ProgressUtils.h"
+#include "../Common/RegisterArc.h"
+
+#include "../Compress/CopyCoder.h"
+
+#include "Common/MultiStream.h"
+
+using namespace NWindows;
+
+namespace NArchive {
+namespace NSplit {
+
+static const Byte kProps[] =
+{
+ kpidPath,
+ kpidSize
+};
+
+static const Byte kArcProps[] =
+{
+ kpidNumVolumes,
+ kpidTotalPhySize
+};
+
+class CHandler:
+ public IInArchive,
+ public IInArchiveGetStream,
+ public CMyUnknownImp
+{
+ CObjectVector<CMyComPtr<IInStream> > _streams;
+ CRecordVector<UInt64> _sizes;
+ UString _subName;
+ UInt64 _totalSize;
+
+ HRESULT Open2(IInStream *stream, IArchiveOpenCallback *callback);
+public:
+ MY_UNKNOWN_IMP2(IInArchive, IInArchiveGetStream)
+ INTERFACE_IInArchive(;)
+ STDMETHOD(GetStream)(UInt32 index, ISequentialInStream **stream);
+};
+
+IMP_IInArchive_Props
+IMP_IInArchive_ArcProps
+
+STDMETHODIMP CHandler::GetArchiveProperty(PROPID propID, PROPVARIANT *value)
+{
+ NCOM::CPropVariant prop;
+ switch (propID)
+ {
+ case kpidMainSubfile: prop = (UInt32)0; break;
+ case kpidPhySize: if (!_sizes.IsEmpty()) prop = _sizes[0]; break;
+ case kpidTotalPhySize: prop = _totalSize; break;
+ case kpidNumVolumes: prop = (UInt32)_streams.Size(); break;
+ }
+ prop.Detach(value);
+ return S_OK;
+}
+
+struct CSeqName
+{
+ UString _unchangedPart;
+ UString _changedPart;
+ bool _splitStyle;
+
+ bool GetNextName(UString &s)
+ {
+ {
+ unsigned i = _changedPart.Len();
+ for (;;)
+ {
+ wchar_t c = _changedPart[--i];
+
+ if (_splitStyle)
+ {
+ if (c == 'z')
+ {
+ _changedPart.ReplaceOneCharAtPos(i, L'a');
+ if (i == 0)
+ return false;
+ continue;
+ }
+ else if (c == 'Z')
+ {
+ _changedPart.ReplaceOneCharAtPos(i, L'A');
+ if (i == 0)
+ return false;
+ continue;
+ }
+ }
+ else
+ {
+ if (c == '9')
+ {
+ _changedPart.ReplaceOneCharAtPos(i, L'0');
+ if (i == 0)
+ {
+ _changedPart.InsertAtFront(L'1');
+ break;
+ }
+ continue;
+ }
+ }
+
+ c++;
+ _changedPart.ReplaceOneCharAtPos(i, c);
+ break;
+ }
+ }
+
+ s = _unchangedPart + _changedPart;
+ return true;
+ }
+};
+
+HRESULT CHandler::Open2(IInStream *stream, IArchiveOpenCallback *callback)
+{
+ Close();
+ if (!callback)
+ return S_FALSE;
+
+ CMyComPtr<IArchiveOpenVolumeCallback> volumeCallback;
+ callback->QueryInterface(IID_IArchiveOpenVolumeCallback, (void **)&volumeCallback);
+ if (!volumeCallback)
+ return S_FALSE;
+
+ UString name;
+ {
+ NCOM::CPropVariant prop;
+ RINOK(volumeCallback->GetProperty(kpidName, &prop));
+ if (prop.vt != VT_BSTR)
+ return S_FALSE;
+ name = prop.bstrVal;
+ }
+
+ int dotPos = name.ReverseFind_Dot();
+ const UString prefix = name.Left(dotPos + 1);
+ const UString ext = name.Ptr(dotPos + 1);
+ UString ext2 = ext;
+ ext2.MakeLower_Ascii();
+
+ CSeqName seqName;
+
+ unsigned numLetters = 2;
+ bool splitStyle = false;
+
+ if (ext2.Len() >= 2 && StringsAreEqual_Ascii(ext2.RightPtr(2), "aa"))
+ {
+ splitStyle = true;
+ while (numLetters < ext2.Len())
+ {
+ if (ext2[ext2.Len() - numLetters - 1] != 'a')
+ break;
+ numLetters++;
+ }
+ }
+ else if (ext.Len() >= 2 && StringsAreEqual_Ascii(ext2.RightPtr(2), "01"))
+ {
+ while (numLetters < ext2.Len())
+ {
+ if (ext2[ext2.Len() - numLetters - 1] != '0')
+ break;
+ numLetters++;
+ }
+ if (numLetters != ext.Len())
+ return S_FALSE;
+ }
+ else
+ return S_FALSE;
+
+ seqName._unchangedPart = prefix + ext.Left(ext2.Len() - numLetters);
+ seqName._changedPart = ext.RightPtr(numLetters);
+ seqName._splitStyle = splitStyle;
+
+ if (prefix.Len() < 1)
+ _subName = "file";
+ else
+ _subName.SetFrom(prefix, prefix.Len() - 1);
+
+ UInt64 size;
+ {
+ /*
+ NCOM::CPropVariant prop;
+ RINOK(volumeCallback->GetProperty(kpidSize, &prop));
+ if (prop.vt != VT_UI8)
+ return E_INVALIDARG;
+ size = prop.uhVal.QuadPart;
+ */
+ RINOK(stream->Seek(0, STREAM_SEEK_END, &size));
+ RINOK(stream->Seek(0, STREAM_SEEK_SET, NULL));
+ }
+
+ _totalSize += size;
+ _sizes.Add(size);
+ _streams.Add(stream);
+
+ {
+ const UInt64 numFiles = _streams.Size();
+ RINOK(callback->SetCompleted(&numFiles, NULL));
+ }
+
+ for (;;)
+ {
+ UString fullName;
+ if (!seqName.GetNextName(fullName))
+ break;
+ CMyComPtr<IInStream> nextStream;
+ HRESULT result = volumeCallback->GetStream(fullName, &nextStream);
+ if (result == S_FALSE)
+ break;
+ if (result != S_OK)
+ return result;
+ if (!nextStream)
+ break;
+ {
+ /*
+ NCOM::CPropVariant prop;
+ RINOK(volumeCallback->GetProperty(kpidSize, &prop));
+ if (prop.vt != VT_UI8)
+ return E_INVALIDARG;
+ size = prop.uhVal.QuadPart;
+ */
+ RINOK(nextStream->Seek(0, STREAM_SEEK_END, &size));
+ RINOK(nextStream->Seek(0, STREAM_SEEK_SET, NULL));
+ }
+ _totalSize += size;
+ _sizes.Add(size);
+ _streams.Add(nextStream);
+ {
+ const UInt64 numFiles = _streams.Size();
+ RINOK(callback->SetCompleted(&numFiles, NULL));
+ }
+ }
+
+ if (_streams.Size() == 1)
+ {
+ if (splitStyle)
+ return S_FALSE;
+ }
+ return S_OK;
+}
+
+STDMETHODIMP CHandler::Open(IInStream *stream, const UInt64 *, IArchiveOpenCallback *callback)
+{
+ COM_TRY_BEGIN
+ HRESULT res = Open2(stream, callback);
+ if (res != S_OK)
+ Close();
+ return res;
+ COM_TRY_END
+}
+
+STDMETHODIMP CHandler::Close()
+{
+ _totalSize = 0;
+ _subName.Empty();
+ _streams.Clear();
+ _sizes.Clear();
+ return S_OK;
+}
+
+STDMETHODIMP CHandler::GetNumberOfItems(UInt32 *numItems)
+{
+ *numItems = _streams.IsEmpty() ? 0 : 1;
+ return S_OK;
+}
+
+STDMETHODIMP CHandler::GetProperty(UInt32 /* index */, PROPID propID, PROPVARIANT *value)
+{
+ NCOM::CPropVariant prop;
+ switch (propID)
+ {
+ case kpidPath: prop = _subName; break;
+ case kpidSize:
+ case kpidPackSize:
+ prop = _totalSize;
+ break;
+ }
+ prop.Detach(value);
+ return S_OK;
+}
+
+STDMETHODIMP CHandler::Extract(const UInt32 *indices, UInt32 numItems,
+ Int32 testMode, IArchiveExtractCallback *extractCallback)
+{
+ COM_TRY_BEGIN
+ if (numItems == 0)
+ return S_OK;
+ if (numItems != (UInt32)(Int32)-1 && (numItems != 1 || indices[0] != 0))
+ return E_INVALIDARG;
+
+ UInt64 currentTotalSize = 0;
+ RINOK(extractCallback->SetTotal(_totalSize));
+ CMyComPtr<ISequentialOutStream> outStream;
+ Int32 askMode = testMode ?
+ NExtract::NAskMode::kTest :
+ NExtract::NAskMode::kExtract;
+ RINOK(extractCallback->GetStream(0, &outStream, askMode));
+ if (!testMode && !outStream)
+ return S_OK;
+ RINOK(extractCallback->PrepareOperation(askMode));
+
+ NCompress::CCopyCoder *copyCoderSpec = new NCompress::CCopyCoder;
+ CMyComPtr<ICompressCoder> copyCoder = copyCoderSpec;
+
+ CLocalProgress *lps = new CLocalProgress;
+ CMyComPtr<ICompressProgressInfo> progress = lps;
+ lps->Init(extractCallback, false);
+
+ FOR_VECTOR (i, _streams)
+ {
+ lps->InSize = lps->OutSize = currentTotalSize;
+ RINOK(lps->SetCur());
+ IInStream *inStream = _streams[i];
+ RINOK(inStream->Seek(0, STREAM_SEEK_SET, NULL));
+ RINOK(copyCoder->Code(inStream, outStream, NULL, NULL, progress));
+ currentTotalSize += copyCoderSpec->TotalSize;
+ }
+ outStream.Release();
+ return extractCallback->SetOperationResult(NExtract::NOperationResult::kOK);
+ COM_TRY_END
+}
+
+STDMETHODIMP CHandler::GetStream(UInt32 index, ISequentialInStream **stream)
+{
+ COM_TRY_BEGIN
+ if (index != 0)
+ return E_INVALIDARG;
+ *stream = 0;
+ CMultiStream *streamSpec = new CMultiStream;
+ CMyComPtr<ISequentialInStream> streamTemp = streamSpec;
+ FOR_VECTOR (i, _streams)
+ {
+ CMultiStream::CSubStreamInfo subStreamInfo;
+ subStreamInfo.Stream = _streams[i];
+ subStreamInfo.Size = _sizes[i];
+ streamSpec->Streams.Add(subStreamInfo);
+ }
+ streamSpec->Init();
+ *stream = streamTemp.Detach();
+ return S_OK;
+ COM_TRY_END
+}
+
+REGISTER_ARC_I_NO_SIG(
+ "Split", "001", 0, 0xEA,
+ 0,
+ 0,
+ NULL)
+
+}}
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