1 files changed, 120 insertions, 0 deletions
diff --git a/other-licenses/7zstub/src/CPP/7zip/Compress/CopyCoder.cpp b/other-licenses/7zstub/src/CPP/7zip/Compress/CopyCoder.cpp
new file mode 100644
index 0000000000..89b5237659
--- /dev/null
+++ b/other-licenses/7zstub/src/CPP/7zip/Compress/CopyCoder.cpp
@@ -0,0 +1,120 @@
+// Compress/CopyCoder.cpp
+
+#include "StdAfx.h"
+
+#include "../../../C/Alloc.h"
+
+#include "CopyCoder.h"
+
+namespace NCompress {
+
+static const UInt32 kBufSize = 1 << 17;
+
+CCopyCoder::~CCopyCoder()
+{
+  ::MidFree(_buf);
+}
+
+STDMETHODIMP CCopyCoder::SetFinishMode(UInt32 /* finishMode */)
+{
+  return S_OK;
+}
+
+STDMETHODIMP CCopyCoder::Code(ISequentialInStream *inStream,
+    ISequentialOutStream *outStream,
+    const UInt64 * /* inSize */, const UInt64 *outSize,
+    ICompressProgressInfo *progress)
+{
+  if (!_buf)
+  {
+    _buf = (Byte *)::MidAlloc(kBufSize);
+    if (!_buf)
+      return E_OUTOFMEMORY;
+  }
+
+  TotalSize = 0;
+  
+  for (;;)
+  {
+    UInt32 size = kBufSize;
+    if (outSize && size > *outSize - TotalSize)
+      size = (UInt32)(*outSize - TotalSize);
+    if (size == 0)
+      return S_OK;
+    
+    HRESULT readRes = inStream->Read(_buf, size, &size);
+
+    if (size == 0)
+      return readRes;
+
+    if (outStream)
+    {
+      UInt32 pos = 0;
+      do
+      {
+        UInt32 curSize = size - pos;
+        HRESULT res = outStream->Write(_buf + pos, curSize, &curSize);
+        pos += curSize;
+        TotalSize += curSize;
+        RINOK(res);
+        if (curSize == 0)
+          return E_FAIL;
+      }
+      while (pos < size);
+    }
+    else
+      TotalSize += size;
+
+    RINOK(readRes);
+
+    if (progress)
+    {
+      RINOK(progress->SetRatioInfo(&TotalSize, &TotalSize));
+    }
+  }
+}
+
+STDMETHODIMP CCopyCoder::SetInStream(ISequentialInStream *inStream)
+{
+  _inStream = inStream;
+  TotalSize = 0;
+  return S_OK;
+}
+
+STDMETHODIMP CCopyCoder::ReleaseInStream()
+{
+  _inStream.Release();
+  return S_OK;
+}
+
+STDMETHODIMP CCopyCoder::Read(void *data, UInt32 size, UInt32 *processedSize)
+{
+  UInt32 realProcessedSize = 0;
+  HRESULT res = _inStream->Read(data, size, &realProcessedSize);
+  TotalSize += realProcessedSize;
+  if (processedSize)
+    *processedSize = realProcessedSize;
+  return res;
+}
+
+STDMETHODIMP CCopyCoder::GetInStreamProcessedSize(UInt64 *value)
+{
+  *value = TotalSize;
+  return S_OK;
+}
+
+HRESULT CopyStream(ISequentialInStream *inStream, ISequentialOutStream *outStream, ICompressProgressInfo *progress)
+{
+  CMyComPtr<ICompressCoder> copyCoder = new CCopyCoder;
+  return copyCoder->Code(inStream, outStream, NULL, NULL, progress);
+}
+
+HRESULT CopyStream_ExactSize(ISequentialInStream *inStream, ISequentialOutStream *outStream, UInt64 size, ICompressProgressInfo *progress)
+{
+  NCompress::CCopyCoder *copyCoderSpec = new NCompress::CCopyCoder;
+  CMyComPtr<ICompressCoder> copyCoder = copyCoderSpec;
+  RINOK(copyCoder->Code(inStream, outStream, NULL, &size, progress));
+  return copyCoderSpec->TotalSize == size ? S_OK : E_FAIL;
+}
+
+}