diff -r 000000000000 -r 6474c204b198 other-licenses/7zstub/src/7zip/Archive/7z/7zMethods.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/other-licenses/7zstub/src/7zip/Archive/7z/7zMethods.cpp	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,174 @@
+// 7zMethods.cpp
+
+#include "StdAfx.h"
+
+#include "7zMethods.h"
+
+#include "../../../Windows/FileFind.h"
+#include "../../../Windows/DLL.h"
+#include "../../../Windows/PropVariant.h"
+#include "../../../Windows/Synchronization.h"
+
+#include "../../ICoder.h"
+#include "../Common/CodecsPath.h"
+
+using namespace NWindows;
+
+namespace NArchive {
+namespace N7z {
+
+static CObjectVector<CMethodInfo2> g_Methods;
+static bool g_Loaded = false;
+
+typedef UInt32 (WINAPI *GetNumberOfMethodsFunc)(UInt32 *numMethods);
+
+typedef UInt32 (WINAPI *GetMethodPropertyFunc)(
+    UInt32 index, PROPID propID, PROPVARIANT *value);
+
+static void Load(const CSysString &folderPrefix)
+{
+  NFile::NFind::CEnumerator enumerator(folderPrefix + CSysString(TEXT("*")));
+  NFile::NFind::CFileInfo fileInfo;
+  while (enumerator.Next(fileInfo))
+  {
+    if (fileInfo.IsDirectory())
+      continue;
+    CSysString filePath = folderPrefix + fileInfo.Name;
+    {
+      NDLL::CLibrary library;
+      if (!library.LoadEx(filePath, LOAD_LIBRARY_AS_DATAFILE))
+        continue;
+    }
+    NDLL::CLibrary library;
+    if (!library.Load(filePath))
+      continue;
+    GetMethodPropertyFunc getMethodProperty = (GetMethodPropertyFunc)
+        library.GetProcAddress("GetMethodProperty");
+    if (getMethodProperty == NULL)
+      continue;
+
+    UInt32 numMethods = 1;
+    GetNumberOfMethodsFunc getNumberOfMethodsFunc = (GetNumberOfMethodsFunc)
+        library.GetProcAddress("GetNumberOfMethods");
+    if (getNumberOfMethodsFunc != NULL)
+      if (getNumberOfMethodsFunc(&numMethods) != S_OK)
+        continue;
+
+    for(UInt32 i = 0; i < numMethods; i++)
+    {
+      CMethodInfo2 info;
+      info.FilePath = filePath;
+      
+      NWindows::NCOM::CPropVariant propVariant;
+      if (getMethodProperty(i, NMethodPropID::kID, &propVariant) != S_OK)
+        continue;
+      if (propVariant.vt != VT_BSTR)
+        continue;
+      info.MethodID.IDSize = SysStringByteLen(propVariant.bstrVal);
+      memmove(info.MethodID.ID, propVariant.bstrVal, info.MethodID.IDSize);
+      propVariant.Clear();
+      
+      if (getMethodProperty(i, NMethodPropID::kName, &propVariant) != S_OK)
+        continue;
+      if (propVariant.vt == VT_EMPTY)
+      {
+      }
+      else if (propVariant.vt == VT_BSTR)
+        info.Name = propVariant.bstrVal;
+      else
+        continue;
+      propVariant.Clear();
+      
+      if (getMethodProperty (i, NMethodPropID::kEncoder, &propVariant) != S_OK)
+        continue;
+      if (propVariant.vt == VT_EMPTY)
+        info.EncoderIsAssigned = false;
+      else if (propVariant.vt == VT_BSTR)
+      {
+        info.EncoderIsAssigned = true;
+        info.Encoder = *(const GUID *)propVariant.bstrVal;
+      }
+      else
+        continue;
+      propVariant.Clear();
+      
+      if (getMethodProperty (i, NMethodPropID::kDecoder, &propVariant) != S_OK)
+        continue;
+      if (propVariant.vt == VT_EMPTY)
+        info.DecoderIsAssigned = false;
+      else if (propVariant.vt == VT_BSTR)
+      {
+        info.DecoderIsAssigned = true;
+        info.Decoder = *(const GUID *)propVariant.bstrVal;
+      }
+      else
+        continue;
+      propVariant.Clear();
+      
+      if (getMethodProperty (i, NMethodPropID::kInStreams, &propVariant) != S_OK)
+        continue;
+      if (propVariant.vt == VT_EMPTY)
+        info.NumInStreams = 1;
+      else if (propVariant.vt == VT_UI4)
+        info.NumInStreams = propVariant.ulVal;
+      else
+        continue;
+      propVariant.Clear();
+      
+      if (getMethodProperty (i, NMethodPropID::kOutStreams, &propVariant) != S_OK)
+        continue;
+      if (propVariant.vt == VT_EMPTY)
+        info.NumOutStreams = 1;
+      else if (propVariant.vt == VT_UI4)
+        info.NumOutStreams = propVariant.ulVal;
+      else
+        continue;
+      propVariant.Clear();
+      
+      g_Methods.Add(info);
+    }
+  }
+}
+
+static NSynchronization::CCriticalSection g_CriticalSection;
+
+void LoadMethodMap()
+{
+  NSynchronization::CCriticalSectionLock lock(g_CriticalSection);
+  if (g_Loaded)
+    return;
+  g_Loaded = true;
+  Load(GetCodecsFolderPrefix());
+}
+
+bool GetMethodInfo(const CMethodID &methodID, CMethodInfo &methodInfo)
+{
+  for(int i = 0; i < g_Methods.Size(); i++)
+  {
+    const CMethodInfo2 &method = g_Methods[i];
+    if (method.MethodID == methodID)
+    {
+      methodInfo = (CMethodInfo)method;
+      return true;
+    }
+  }
+  return false;
+}
+
+bool GetMethodInfo(const UString &name, CMethodInfo2 &methodInfo)
+{
+  for(int i = 0; i < g_Methods.Size(); i++)
+  {
+    const CMethodInfo2 &method = g_Methods[i];
+    if (method.Name.CompareNoCase(name) == 0)
+    {
+      methodInfo = method;
+      return true;
+    }
+  }
+  return false;
+}
+
+}}
+
+