diff options
| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-28 14:29:10 +0000 |
|---|---|---|
| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-28 14:29:10 +0000 |
| commit | 2aa4a82499d4becd2284cdb482213d541b8804dd (patch) | |
| tree | b80bf8bf13c3766139fbacc530efd0dd9d54394c /other-licenses/7zstub/src/CPP/7zip/Archive/Common/MultiStream.cpp | |
| parent | Initial commit. (diff) | |
| download | firefox-2aa4a82499d4becd2284cdb482213d541b8804dd.tar.xz firefox-2aa4a82499d4becd2284cdb482213d541b8804dd.zip | |
Adding upstream version 86.0.1.upstream/86.0.1upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'other-licenses/7zstub/src/CPP/7zip/Archive/Common/MultiStream.cpp')
| -rw-r--r-- | other-licenses/7zstub/src/CPP/7zip/Archive/Common/MultiStream.cpp | 191 |
1 files changed, 191 insertions, 0 deletions
diff --git a/other-licenses/7zstub/src/CPP/7zip/Archive/Common/MultiStream.cpp b/other-licenses/7zstub/src/CPP/7zip/Archive/Common/MultiStream.cpp new file mode 100644 index 0000000000..39d15217f2 --- /dev/null +++ b/other-licenses/7zstub/src/CPP/7zip/Archive/Common/MultiStream.cpp @@ -0,0 +1,191 @@ +// MultiStream.cpp
+
+#include "StdAfx.h"
+
+#include "MultiStream.h"
+
+STDMETHODIMP CMultiStream::Read(void *data, UInt32 size, UInt32 *processedSize)
+{
+ if (processedSize)
+ *processedSize = 0;
+ if (size == 0)
+ return S_OK;
+ if (_pos >= _totalLength)
+ return S_OK;
+
+ {
+ unsigned left = 0, mid = _streamIndex, right = Streams.Size();
+ for (;;)
+ {
+ CSubStreamInfo &m = Streams[mid];
+ if (_pos < m.GlobalOffset)
+ right = mid;
+ else if (_pos >= m.GlobalOffset + m.Size)
+ left = mid + 1;
+ else
+ {
+ _streamIndex = mid;
+ break;
+ }
+ mid = (left + right) / 2;
+ }
+ _streamIndex = mid;
+ }
+
+ CSubStreamInfo &s = Streams[_streamIndex];
+ UInt64 localPos = _pos - s.GlobalOffset;
+ if (localPos != s.LocalPos)
+ {
+ RINOK(s.Stream->Seek(localPos, STREAM_SEEK_SET, &s.LocalPos));
+ }
+ UInt64 rem = s.Size - localPos;
+ if (size > rem)
+ size = (UInt32)rem;
+ HRESULT result = s.Stream->Read(data, size, &size);
+ _pos += size;
+ s.LocalPos += size;
+ if (processedSize)
+ *processedSize = size;
+ return result;
+}
+
+STDMETHODIMP CMultiStream::Seek(Int64 offset, UInt32 seekOrigin, UInt64 *newPosition)
+{
+ switch (seekOrigin)
+ {
+ case STREAM_SEEK_SET: break;
+ case STREAM_SEEK_CUR: offset += _pos; break;
+ case STREAM_SEEK_END: offset += _totalLength; break;
+ default: return STG_E_INVALIDFUNCTION;
+ }
+ if (offset < 0)
+ return HRESULT_WIN32_ERROR_NEGATIVE_SEEK;
+ _pos = offset;
+ if (newPosition)
+ *newPosition = offset;
+ return S_OK;
+}
+
+
+/*
+class COutVolumeStream:
+ public ISequentialOutStream,
+ public CMyUnknownImp
+{
+ unsigned _volIndex;
+ UInt64 _volSize;
+ UInt64 _curPos;
+ CMyComPtr<ISequentialOutStream> _volumeStream;
+ COutArchive _archive;
+ CCRC _crc;
+
+public:
+ MY_UNKNOWN_IMP
+
+ CFileItem _file;
+ CUpdateOptions _options;
+ CMyComPtr<IArchiveUpdateCallback2> VolumeCallback;
+ void Init(IArchiveUpdateCallback2 *volumeCallback,
+ const UString &name)
+ {
+ _file.Name = name;
+ _file.IsStartPosDefined = true;
+ _file.StartPos = 0;
+
+ VolumeCallback = volumeCallback;
+ _volIndex = 0;
+ _volSize = 0;
+ }
+
+ HRESULT Flush();
+ STDMETHOD(Write)(const void *data, UInt32 size, UInt32 *processedSize);
+};
+
+HRESULT COutVolumeStream::Flush()
+{
+ if (_volumeStream)
+ {
+ _file.UnPackSize = _curPos;
+ _file.FileCRC = _crc.GetDigest();
+ RINOK(WriteVolumeHeader(_archive, _file, _options));
+ _archive.Close();
+ _volumeStream.Release();
+ _file.StartPos += _file.UnPackSize;
+ }
+ return S_OK;
+}
+*/
+
+/*
+STDMETHODIMP COutMultiStream::Write(const void *data, UInt32 size, UInt32 *processedSize)
+{
+ if (processedSize)
+ *processedSize = 0;
+ while (size > 0)
+ {
+ if (_streamIndex >= Streams.Size())
+ {
+ CSubStreamInfo subStream;
+ RINOK(VolumeCallback->GetVolumeSize(Streams.Size(), &subStream.Size));
+ RINOK(VolumeCallback->GetVolumeStream(Streams.Size(), &subStream.Stream));
+ subStream.Pos = 0;
+ Streams.Add(subStream);
+ continue;
+ }
+ CSubStreamInfo &subStream = Streams[_streamIndex];
+ if (_offsetPos >= subStream.Size)
+ {
+ _offsetPos -= subStream.Size;
+ _streamIndex++;
+ continue;
+ }
+ if (_offsetPos != subStream.Pos)
+ {
+ CMyComPtr<IOutStream> outStream;
+ RINOK(subStream.Stream.QueryInterface(IID_IOutStream, &outStream));
+ RINOK(outStream->Seek(_offsetPos, STREAM_SEEK_SET, NULL));
+ subStream.Pos = _offsetPos;
+ }
+
+ UInt32 curSize = (UInt32)MyMin((UInt64)size, subStream.Size - subStream.Pos);
+ UInt32 realProcessed;
+ RINOK(subStream.Stream->Write(data, curSize, &realProcessed));
+ data = (void *)((Byte *)data + realProcessed);
+ size -= realProcessed;
+ subStream.Pos += realProcessed;
+ _offsetPos += realProcessed;
+ _absPos += realProcessed;
+ if (_absPos > _length)
+ _length = _absPos;
+ if (processedSize)
+ *processedSize += realProcessed;
+ if (subStream.Pos == subStream.Size)
+ {
+ _streamIndex++;
+ _offsetPos = 0;
+ }
+ if (realProcessed != curSize && realProcessed == 0)
+ return E_FAIL;
+ }
+ return S_OK;
+}
+
+STDMETHODIMP COutMultiStream::Seek(Int64 offset, UInt32 seekOrigin, UInt64 *newPosition)
+{
+ switch (seekOrigin)
+ {
+ case STREAM_SEEK_SET: break;
+ case STREAM_SEEK_CUR: offset += _absPos; break;
+ case STREAM_SEEK_END: offset += _length; break;
+ default: return STG_E_INVALIDFUNCTION;
+ }
+ if (offset < 0)
+ return HRESULT_WIN32_ERROR_NEGATIVE_SEEK;
+ _absPos = offset;
+ _offsetPos = _absPos;
+ _streamIndex = 0;
+ if (newPosition)
+ *newPosition = offset;
+ return S_OK;
+}
+*/
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