From 2cf2f297c00ad262ddcbe56d38fdd45dffb7e342 Mon Sep 17 00:00:00 2001
From: crupest <crupest@outlook.com>
Date: Wed, 2 Feb 2022 23:23:23 +0800
Subject: ...

---
 src/common/platform/win/BridgeComStream.cpp | 98 +++++++++++++++++++++++++++++
 1 file changed, 98 insertions(+)
 create mode 100644 src/common/platform/win/BridgeComStream.cpp

(limited to 'src/common/platform/win/BridgeComStream.cpp')

diff --git a/src/common/platform/win/BridgeComStream.cpp b/src/common/platform/win/BridgeComStream.cpp
new file mode 100644
index 00000000..eaa53b92
--- /dev/null
+++ b/src/common/platform/win/BridgeComStream.cpp
@@ -0,0 +1,98 @@
+#include "cru/common/io/Stream.hpp"
+#include "cru/common/platform/win/BrigdeComStream.hpp"
+
+namespace cru::platform::win {
+BridgeComStream::BridgeComStream(io::Stream *stream)
+    : stream_(stream), ref_count_(1) {}
+
+BridgeComStream::~BridgeComStream() {}
+
+ULONG BridgeComStream::AddRef() { return ++ref_count_; }
+
+ULONG BridgeComStream::Release() {
+  --ref_count_;
+
+  if (ref_count_ == 0) {
+    delete this;
+    return 0;
+  }
+
+  return ref_count_;
+}
+
+HRESULT BridgeComStream::QueryInterface(const IID &riid, void **ppvObject) {
+  if (riid == IID_IStream) {
+    *ppvObject = static_cast<IStream *>(this);
+    AddRef();
+    return S_OK;
+  } else if (riid == IID_ISequentialStream) {
+    *ppvObject = static_cast<ISequentialStream *>(this);
+    AddRef();
+    return S_OK;
+  } else if (riid == IID_IUnknown) {
+    *ppvObject = static_cast<IUnknown *>(this);
+    AddRef();
+    return S_OK;
+  } else {
+    return E_NOINTERFACE;
+  }
+}
+
+HRESULT BridgeComStream::Read(void *pv, ULONG cb, ULONG *pcbRead) {
+  *pcbRead = stream_->Read(static_cast<std::byte *>(pv), cb);
+  return S_OK;
+}
+
+HRESULT BridgeComStream::Write(const void *pv, ULONG cb, ULONG *pcbWritten) {
+  *pcbWritten = stream_->Write(static_cast<const std::byte *>(pv), cb);
+  return S_OK;
+}
+
+HRESULT BridgeComStream::Seek(LARGE_INTEGER dlibMove, DWORD dwOrigin,
+                              ULARGE_INTEGER *plibNewPosition) {
+  io::Stream::SeekOrigin so =
+      dwOrigin == STREAM_SEEK_SET
+          ? io::Stream::SeekOrigin::Begin
+          : (STREAM_SEEK_CUR ? io::Stream::SeekOrigin::Current
+                             : io::Stream::SeekOrigin::End);
+
+  stream_->Seek(dlibMove.QuadPart, so);
+  plibNewPosition->QuadPart = stream_->Tell();
+
+  return S_OK;
+}
+
+HRESULT BridgeComStream::SetSize(ULARGE_INTEGER libNewSize) {
+  return E_NOTIMPL;
+}
+
+HRESULT BridgeComStream::CopyTo(IStream *pstm, ULARGE_INTEGER cb,
+                                ULARGE_INTEGER *pcbRead,
+                                ULARGE_INTEGER *pcbWritten) {
+  return E_NOTIMPL;
+}
+
+HRESULT BridgeComStream::Commit(DWORD grfCommitFlags) { return S_OK; }
+
+HRESULT BridgeComStream::Revert() { return S_OK; }
+
+HRESULT BridgeComStream::LockRegion(ULARGE_INTEGER libOffset, ULARGE_INTEGER cb,
+                                    DWORD dwLockType) {
+  return S_OK;
+}
+
+HRESULT BridgeComStream::UnlockRegion(ULARGE_INTEGER libOffset,
+                                      ULARGE_INTEGER cb, DWORD dwLockType) {
+  return S_OK;
+}
+
+HRESULT BridgeComStream::Stat(STATSTG *pstatstg, DWORD grfStatFlag) {
+  return E_NOTIMPL;
+}
+
+HRESULT BridgeComStream::Clone(IStream **ppstm) {
+  *ppstm = new BridgeComStream(stream_);
+  return S_OK;
+}
+
+}  // namespace cru::platform::win
-- 
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