4.44 beta

CPP/7zip/Compress/Copy/CopyCoder.cpp

@@ -0,0 +1,52 @@
+// Compress/CopyCoder.cpp
+
+#include "StdAfx.h"
+
+#include "CopyCoder.h"
+#include "../../../Common/Alloc.h"
+#include "../../Common/StreamUtils.h"
+
+namespace NCompress {
+
+static const UInt32 kBufferSize = 1 << 17;
+
+CCopyCoder::~CCopyCoder()
+{
+  ::MidFree(_buffer);
+}
+
+STDMETHODIMP CCopyCoder::Code(ISequentialInStream *inStream,
+    ISequentialOutStream *outStream, 
+    const UInt64 * /* inSize */, const UInt64 *outSize,
+    ICompressProgressInfo *progress)
+{
+  if (_buffer == 0)
+  {
+    _buffer = (Byte *)::MidAlloc(kBufferSize);
+    if (_buffer == 0)
+      return E_OUTOFMEMORY;
+  }
+
+  TotalSize = 0;
+  for (;;)
+  {
+    UInt32 realProcessedSize;
+    UInt32 size = kBufferSize;
+    if (outSize != 0)
+      if (size > *outSize - TotalSize)
+        size = (UInt32)(*outSize - TotalSize);
+    RINOK(inStream->Read(_buffer, size, &realProcessedSize));
+    if(realProcessedSize == 0)
+      break;
+    RINOK(WriteStream(outStream, _buffer, realProcessedSize, NULL));
+    TotalSize += realProcessedSize;
+    if (progress != NULL)
+    {
+      RINOK(progress->SetRatioInfo(&TotalSize, &TotalSize));
+    }
+  }
+  return S_OK;
+}
+
+}
+