diff options
author | Igor Pavlov <ipavlov@users.sourceforge.net> | 2007-01-20 03:00:00 +0300 |
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committer | Kornel LesiĆski <kornel@geekhood.net> | 2016-05-28 02:15:49 +0300 |
commit | d9666cf046a8453b33b3e2fbf4d82295a9f87df3 (patch) | |
tree | c722ed19b844b53042aec0c1d7d2f8381140a5ed /CPP/7zip/Common/OffsetStream.cpp | |
parent | 804edc5756fede54dbb1aefda6d39d306111938d (diff) |
4.44 beta
Diffstat (limited to 'CPP/7zip/Common/OffsetStream.cpp')
-rwxr-xr-x | CPP/7zip/Common/OffsetStream.cpp | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/CPP/7zip/Common/OffsetStream.cpp b/CPP/7zip/Common/OffsetStream.cpp new file mode 100755 index 00000000..997ccae2 --- /dev/null +++ b/CPP/7zip/Common/OffsetStream.cpp @@ -0,0 +1,35 @@ +// OffsetStream.cpp + +#include "StdAfx.h" + +#include "Common/Defs.h" +#include "OffsetStream.h" + +HRESULT COffsetOutStream::Init(IOutStream *stream, UInt64 offset) +{ + _offset = offset; + _stream = stream; + return _stream->Seek(offset, STREAM_SEEK_SET, NULL); +} + +STDMETHODIMP COffsetOutStream::Write(const void *data, UInt32 size, UInt32 *processedSize) +{ + return _stream->Write(data, size, processedSize); +} + +STDMETHODIMP COffsetOutStream::Seek(Int64 offset, UInt32 seekOrigin, + UInt64 *newPosition) +{ + UInt64 absoluteNewPosition; + if (seekOrigin == STREAM_SEEK_SET) + offset += _offset; + HRESULT result = _stream->Seek(offset, seekOrigin, &absoluteNewPosition); + if (newPosition != NULL) + *newPosition = absoluteNewPosition - _offset; + return result; +} + +STDMETHODIMP COffsetOutStream::SetSize(Int64 newSize) +{ + return _stream->SetSize(_offset + newSize); +} |