From f2902217b38cf2e16e851ae84d61247f8e828180 Mon Sep 17 00:00:00 2001
From: wolfbeast <mcwerewolf@wolfbeast.com>
Date: Mon, 25 Mar 2019 17:53:14 +0100
Subject: Update the 7z installer stub source to 18.05.

Tag #1022
---
 .../7zstub/src/CPP/7zip/Common/StreamBinder.cpp    | 156 +++++++++++++++++++++
 1 file changed, 156 insertions(+)
 create mode 100644 other-licenses/7zstub/src/CPP/7zip/Common/StreamBinder.cpp

(limited to 'other-licenses/7zstub/src/CPP/7zip/Common/StreamBinder.cpp')

diff --git a/other-licenses/7zstub/src/CPP/7zip/Common/StreamBinder.cpp b/other-licenses/7zstub/src/CPP/7zip/Common/StreamBinder.cpp
new file mode 100644
index 000000000..a6627db21
--- /dev/null
+++ b/other-licenses/7zstub/src/CPP/7zip/Common/StreamBinder.cpp
@@ -0,0 +1,156 @@
+// StreamBinder.cpp
+
+#include "StdAfx.h"
+
+#include "../../Common/MyCom.h"
+
+#include "StreamBinder.h"
+
+class CBinderInStream:
+  public ISequentialInStream,
+  public CMyUnknownImp
+{
+  CStreamBinder *_binder;
+public:
+  MY_UNKNOWN_IMP1(ISequentialInStream)
+  STDMETHOD(Read)(void *data, UInt32 size, UInt32 *processedSize);
+  ~CBinderInStream() { _binder->CloseRead(); }
+  CBinderInStream(CStreamBinder *binder): _binder(binder) {}
+};
+
+STDMETHODIMP CBinderInStream::Read(void *data, UInt32 size, UInt32 *processedSize)
+  { return _binder->Read(data, size, processedSize); }
+
+class CBinderOutStream:
+  public ISequentialOutStream,
+  public CMyUnknownImp
+{
+  CStreamBinder *_binder;
+public:
+  MY_UNKNOWN_IMP1(ISequentialOutStream)
+  STDMETHOD(Write)(const void *data, UInt32 size, UInt32 *processedSize);
+  ~CBinderOutStream() { _binder->CloseWrite(); }
+  CBinderOutStream(CStreamBinder *binder): _binder(binder) {}
+};
+
+STDMETHODIMP CBinderOutStream::Write(const void *data, UInt32 size, UInt32 *processedSize)
+  { return _binder->Write(data, size, processedSize); }
+
+
+
+WRes CStreamBinder::CreateEvents()
+{
+  RINOK(_canWrite_Event.Create());
+  RINOK(_canRead_Event.Create());
+  return _readingWasClosed_Event.Create();
+}
+
+void CStreamBinder::ReInit()
+{
+  _canWrite_Event.Reset();
+  _canRead_Event.Reset();
+  _readingWasClosed_Event.Reset();
+
+  // _readingWasClosed = false;
+  _readingWasClosed2 = false;
+
+  _waitWrite = true;
+  _bufSize = 0;
+  _buf = NULL;
+  ProcessedSize = 0;
+  // WritingWasCut = false;
+}
+
+
+void CStreamBinder::CreateStreams(ISequentialInStream **inStream, ISequentialOutStream **outStream)
+{
+  // _readingWasClosed = false;
+  _readingWasClosed2 = false;
+
+  _waitWrite = true;
+  _bufSize = 0;
+  _buf = NULL;
+  ProcessedSize = 0;
+  // WritingWasCut = false;
+
+  CBinderInStream *inStreamSpec = new CBinderInStream(this);
+  CMyComPtr<ISequentialInStream> inStreamLoc(inStreamSpec);
+  *inStream = inStreamLoc.Detach();
+
+  CBinderOutStream *outStreamSpec = new CBinderOutStream(this);
+  CMyComPtr<ISequentialOutStream> outStreamLoc(outStreamSpec);
+  *outStream = outStreamLoc.Detach();
+}
+
+// (_canRead_Event && _bufSize == 0) means that stream is finished.
+
+HRESULT CStreamBinder::Read(void *data, UInt32 size, UInt32 *processedSize)
+{
+  if (processedSize)
+    *processedSize = 0;
+  if (size != 0)
+  {
+    if (_waitWrite)
+    {
+      RINOK(_canRead_Event.Lock());
+      _waitWrite = false;
+    }
+    if (size > _bufSize)
+      size = _bufSize;
+    if (size != 0)
+    {
+      memcpy(data, _buf, size);
+      _buf = ((const Byte *)_buf) + size;
+      ProcessedSize += size;
+      if (processedSize)
+        *processedSize = size;
+      _bufSize -= size;
+      if (_bufSize == 0)
+      {
+        _waitWrite = true;
+        _canRead_Event.Reset();
+        _canWrite_Event.Set();
+      }
+    }
+  }
+  return S_OK;
+}
+
+HRESULT CStreamBinder::Write(const void *data, UInt32 size, UInt32 *processedSize)
+{
+  if (processedSize)
+    *processedSize = 0;
+  if (size == 0)
+    return S_OK;
+
+  if (!_readingWasClosed2)
+  {
+    _buf = data;
+    _bufSize = size;
+    _canRead_Event.Set();
+    
+    /*
+    _canWrite_Event.Lock();
+    if (_readingWasClosed)
+      _readingWasClosed2 = true;
+    */
+
+    HANDLE events[2] = { _canWrite_Event, _readingWasClosed_Event };
+    DWORD waitResult = ::WaitForMultipleObjects(2, events, FALSE, INFINITE);
+    if (waitResult >= WAIT_OBJECT_0 + 2)
+      return E_FAIL;
+
+    size -= _bufSize;
+    if (size != 0)
+    {
+      if (processedSize)
+        *processedSize = size;
+      return S_OK;
+    }
+    // if (waitResult == WAIT_OBJECT_0 + 1)
+      _readingWasClosed2 = true;
+  }
+
+  // WritingWasCut = true;
+  return k_My_HRESULT_WritingWasCut;
+}
-- 
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