--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/misc/libphysfs/lzma/CPP/7zip/Common/FileStreams.cpp	Mon Apr 10 12:06:43 2017 -0400
@@ -0,0 +1,261 @@
+// FileStreams.cpp
+
+#include "StdAfx.h"
+
+#ifndef _WIN32
+#include <fcntl.h>
+#include <unistd.h>
+#include <errno.h>
+#endif
+
+#include "FileStreams.h"
+
+static inline HRESULT ConvertBoolToHRESULT(bool result)
+{
+  #ifdef _WIN32
+  if (result)
+    return S_OK;
+  DWORD lastError = ::GetLastError();
+  if (lastError == 0)
+    return E_FAIL;
+  return lastError;
+  #else
+  return result ? S_OK: E_FAIL;
+  #endif
+}
+
+bool CInFileStream::Open(LPCTSTR fileName)
+{
+  return File.Open(fileName);
+}
+
+#ifdef USE_WIN_FILE
+#ifndef _UNICODE
+bool CInFileStream::Open(LPCWSTR fileName)
+{
+  return File.Open(fileName);
+}
+#endif
+#endif
+
+bool CInFileStream::OpenShared(LPCTSTR fileName, bool shareForWrite)
+{
+  return File.OpenShared(fileName, shareForWrite);
+}
+
+#ifdef USE_WIN_FILE
+#ifndef _UNICODE
+bool CInFileStream::OpenShared(LPCWSTR fileName, bool shareForWrite)
+{
+  return File.OpenShared(fileName, shareForWrite);
+}
+#endif
+#endif
+
+STDMETHODIMP CInFileStream::Read(void *data, UInt32 size, UInt32 *processedSize)
+{
+  #ifdef USE_WIN_FILE
+  
+  UInt32 realProcessedSize;
+  bool result = File.ReadPart(data, size, realProcessedSize);
+  if(processedSize != NULL)
+    *processedSize = realProcessedSize;
+  return ConvertBoolToHRESULT(result);
+  
+  #else
+  
+  if(processedSize != NULL)
+    *processedSize = 0;
+  ssize_t res = File.Read(data, (size_t)size);
+  if (res == -1)
+    return E_FAIL;
+  if(processedSize != NULL)
+    *processedSize = (UInt32)res;
+  return S_OK;
+
+  #endif
+}
+
+#ifndef _WIN32_WCE
+STDMETHODIMP CStdInFileStream::Read(void *data, UInt32 size, UInt32 *processedSize)
+{
+  #ifdef _WIN32
+  UInt32 realProcessedSize;
+  BOOL res = ::ReadFile(GetStdHandle(STD_INPUT_HANDLE), 
+      data, size, (DWORD *)&realProcessedSize, NULL);
+  if(processedSize != NULL)
+    *processedSize = realProcessedSize;
+  if (res == FALSE && GetLastError() == ERROR_BROKEN_PIPE)
+    return S_OK;
+  return ConvertBoolToHRESULT(res != FALSE);
+  
+  #else
+
+  if(processedSize != NULL)
+    *processedSize = 0;
+  ssize_t res;
+  do 
+  {
+    res = read(0, data, (size_t)size);
+  } 
+  while (res < 0 && (errno == EINTR));
+  if (res == -1)
+    return E_FAIL;
+  if(processedSize != NULL)
+    *processedSize = (UInt32)res;
+  return S_OK;
+  
+  #endif
+}
+  
+#endif
+
+STDMETHODIMP CInFileStream::Seek(Int64 offset, UInt32 seekOrigin, 
+    UInt64 *newPosition)
+{
+  if(seekOrigin >= 3)
+    return STG_E_INVALIDFUNCTION;
+
+  #ifdef USE_WIN_FILE
+
+  UInt64 realNewPosition;
+  bool result = File.Seek(offset, seekOrigin, realNewPosition);
+  if(newPosition != NULL)
+    *newPosition = realNewPosition;
+  return ConvertBoolToHRESULT(result);
+  
+  #else
+  
+  off_t res = File.Seek(offset, seekOrigin);
+  if (res == -1)
+    return E_FAIL;
+  if(newPosition != NULL)
+    *newPosition = (UInt64)res;
+  return S_OK;
+  
+  #endif
+}
+
+STDMETHODIMP CInFileStream::GetSize(UInt64 *size)
+{
+  return ConvertBoolToHRESULT(File.GetLength(*size));
+}
+
+
+//////////////////////////
+// COutFileStream
+
+HRESULT COutFileStream::Close()
+{
+  return ConvertBoolToHRESULT(File.Close());
+}
+
+STDMETHODIMP COutFileStream::Write(const void *data, UInt32 size, UInt32 *processedSize)
+{
+  #ifdef USE_WIN_FILE
+
+  UInt32 realProcessedSize;
+  bool result = File.WritePart(data, size, realProcessedSize);
+  ProcessedSize += realProcessedSize;
+  if(processedSize != NULL)
+    *processedSize = realProcessedSize;
+  return ConvertBoolToHRESULT(result);
+  
+  #else
+  
+  if(processedSize != NULL)
+    *processedSize = 0;
+  ssize_t res = File.Write(data, (size_t)size);
+  if (res == -1)
+    return E_FAIL;
+  if(processedSize != NULL)
+    *processedSize = (UInt32)res;
+  ProcessedSize += res;
+  return S_OK;
+  
+  #endif
+}
+  
+STDMETHODIMP COutFileStream::Seek(Int64 offset, UInt32 seekOrigin, UInt64 *newPosition)
+{
+  if(seekOrigin >= 3)
+    return STG_E_INVALIDFUNCTION;
+  #ifdef USE_WIN_FILE
+
+  UInt64 realNewPosition;
+  bool result = File.Seek(offset, seekOrigin, realNewPosition);
+  if(newPosition != NULL)
+    *newPosition = realNewPosition;
+  return ConvertBoolToHRESULT(result);
+  
+  #else
+  
+  off_t res = File.Seek(offset, seekOrigin);
+  if (res == -1)
+    return E_FAIL;
+  if(newPosition != NULL)
+    *newPosition = (UInt64)res;
+  return S_OK;
+  
+  #endif
+}
+
+STDMETHODIMP COutFileStream::SetSize(Int64 newSize)
+{
+  #ifdef USE_WIN_FILE
+  UInt64 currentPos;
+  if(!File.Seek(0, FILE_CURRENT, currentPos))
+    return E_FAIL;
+  bool result = File.SetLength(newSize);
+  UInt64 currentPos2;
+  result = result && File.Seek(currentPos, currentPos2);
+  return result ? S_OK : E_FAIL;
+  #else
+  return E_FAIL;
+  #endif
+}
+
+#ifndef _WIN32_WCE
+STDMETHODIMP CStdOutFileStream::Write(const void *data, UInt32 size, UInt32 *processedSize)
+{
+  if(processedSize != NULL)
+    *processedSize = 0;
+
+  #ifdef _WIN32
+  UInt32 realProcessedSize;
+  BOOL res = TRUE;
+  if (size > 0)
+  {
+    // Seems that Windows doesn't like big amounts writing to stdout.
+    // So we limit portions by 32KB.
+    UInt32 sizeTemp = (1 << 15); 
+    if (sizeTemp > size)
+      sizeTemp = size;
+    res = ::WriteFile(GetStdHandle(STD_OUTPUT_HANDLE), 
+        data, sizeTemp, (DWORD *)&realProcessedSize, NULL);
+    size -= realProcessedSize;
+    data = (const void *)((const Byte *)data + realProcessedSize);
+    if(processedSize != NULL)
+      *processedSize += realProcessedSize;
+  }
+  return ConvertBoolToHRESULT(res != FALSE);
+
+  #else
+  
+  ssize_t res;
+  do 
+  {
+    res = write(1, data, (size_t)size);
+  } 
+  while (res < 0 && (errno == EINTR));
+  if (res == -1)
+    return E_FAIL;
+  if(processedSize != NULL)
+    *processedSize = (UInt32)res;
+  return S_OK;
+  
+  return S_OK;
+  #endif
+}
+  
+#endif