Noissue - Add conversion function from 'BSTR' to 'std::wstring'

src/shared/Utils.cpp

 /*
  * This file is part of Adblock Plus <https://adblockplus.org/>,
  * Copyright (C) 2006-2015 Eyeo GmbH
  *
  * Adblock Plus is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License version 3 as
  * published by the Free Software Foundation.
  *
  * Adblock Plus is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
@@ skipping 35 matching lines @@
   std::unique_ptr<OSVERSIONINFOEX> osvi = GetWindowsVersion();
   return osvi->dwMajorVersion >= 6;
 }
 
 bool IsWindows8OrLater()
 {
   std::unique_ptr<OSVERSIONINFOEX> osvi = GetWindowsVersion();
   return (osvi->dwMajorVersion == 6 && osvi->dwMinorVersion >= 2) || osvi->dwMajorVersion > 6;
 }
 
+std::wstring ToWstring(const BSTR b)
+{
+  if (!b)
+  {
+    // A null BSTR pointer is considered semantically equal to the zero-length string.
+    return std::wstring();
+  }
+  return std::wstring(b, ::SysStringLen(b));
+}
+
 std::string ToUtf8String(const std::wstring& str)
 {
   int length = static_cast<int>(str.size());
   if (length == 0)
     return std::string();
 
   int utf8StringLength = WideCharToMultiByte(CP_UTF8, 0, str.c_str(), length, 0, 0, 0, 0);
   if (utf8StringLength == 0)
     throw std::runtime_error("Failed to determine the required buffer size");
 
@@ skipping 121 matching lines @@
     return L"";
   }
   auto queryStringBeginsAt = questionSignPos + 1;
   auto endQueryStringPos = url.find(L'#', queryStringBeginsAt);
   if (endQueryStringPos == std::wstring::npos)
   {
     endQueryStringPos = url.length();
   }
   return url.substr(queryStringBeginsAt, endQueryStringPos - queryStringBeginsAt);
 }