1 files changed, 46 insertions, 0 deletions
diff --git a/src/libs/3rdparty/7zip/unix/CPP/7zip/Archive/Common/InStreamWithCRC.cpp b/src/libs/3rdparty/7zip/unix/CPP/7zip/Archive/Common/InStreamWithCRC.cpp
new file mode 100644
index 000000000..a2d688328
--- /dev/null
+++ b/src/libs/3rdparty/7zip/unix/CPP/7zip/Archive/Common/InStreamWithCRC.cpp
@@ -0,0 +1,46 @@
+// InStreamWithCRC.cpp
+
+#include "StdAfx.h"
+
+#include "InStreamWithCRC.h"
+
+STDMETHODIMP CSequentialInStreamWithCRC::Read(void *data, UInt32 size, UInt32 *processedSize)
+{
+  UInt32 realProcessed = 0;
+  HRESULT result = S_OK;
+  if (_stream)
+    result = _stream->Read(data, size, &realProcessed);
+  _size += realProcessed;
+  if (size != 0 && realProcessed == 0)
+    _wasFinished = true;
+  _crc = CrcUpdate(_crc, data, realProcessed);
+  if (processedSize)
+    *processedSize = realProcessed;
+  return result;
+}
+
+STDMETHODIMP CInStreamWithCRC::Read(void *data, UInt32 size, UInt32 *processedSize)
+{
+  UInt32 realProcessed = 0;
+  HRESULT result = S_OK;
+  if (_stream)
+    result = _stream->Read(data, size, &realProcessed);
+  _size += realProcessed;
+  /*
+  if (size != 0 && realProcessed == 0)
+    _wasFinished = true;
+  */
+  _crc = CrcUpdate(_crc, data, realProcessed);
+  if (processedSize)
+    *processedSize = realProcessed;
+  return result;
+}
+
+STDMETHODIMP CInStreamWithCRC::Seek(Int64 offset, UInt32 seekOrigin, UInt64 *newPosition)
+{
+  if (seekOrigin != STREAM_SEEK_SET || offset != 0)
+    return E_FAIL;
+  _size = 0;
+  _crc = CRC_INIT_VAL;
+  return _stream->Seek(offset, seekOrigin, newPosition);
+}