Keep only base/extractor.[cc|h].

third_party/lzma/v4_65/files/CPP/7zip/Common/StreamUtils.cpp

-// StreamUtils.cpp
-
-#include "StdAfx.h"
-
-#include "StreamUtils.h"
-
-static const UInt32 kBlockSize = ((UInt32)1 << 31);
-
-HRESULT ReadStream(ISequentialInStream *stream, void *data, size_t *processedSize)
-{
-  size_t size = *processedSize;
-  *processedSize = 0;
-  while (size != 0)
-  {
-    UInt32 curSize = (size < kBlockSize) ? (UInt32)size : kBlockSize;
-    UInt32 processedSizeLoc;
-    HRESULT res = stream->Read(data, curSize, &processedSizeLoc);
-    *processedSize += processedSizeLoc;
-    data = (void *)((Byte *)data + processedSizeLoc);
-    size -= processedSizeLoc;
-    RINOK(res);
-    if (processedSizeLoc == 0)
-      return S_OK;
-  }
-  return S_OK;
-}
-
-HRESULT ReadStream_FALSE(ISequentialInStream *stream, void *data, size_t size)
-{
-  size_t processedSize = size;
-  RINOK(ReadStream(stream, data, &processedSize));
-  return (size == processedSize) ? S_OK : S_FALSE;
-}
-
-HRESULT ReadStream_FAIL(ISequentialInStream *stream, void *data, size_t size)
-{
-  size_t processedSize = size;
-  RINOK(ReadStream(stream, data, &processedSize));
-  return (size == processedSize) ? S_OK : E_FAIL;
-}
-
-HRESULT WriteStream(ISequentialOutStream *stream, const void *data, size_t size)
-{
-  while (size != 0)
-  {
-    UInt32 curSize = (size < kBlockSize) ? (UInt32)size : kBlockSize;
-    UInt32 processedSizeLoc;
-    HRESULT res = stream->Write(data, curSize, &processedSizeLoc);
-    data = (const void *)((const Byte *)data + processedSizeLoc);
-    size -= processedSizeLoc;
-    RINOK(res);
-    if (processedSizeLoc == 0)
-      return E_FAIL;
-  }
-  return S_OK;
-}