extracted GetResourceDirectory and made it and GetNTHeaders public

git-svn-id: https://svn.code.sf.net/p/nsis/code/NSIS/trunk@4617 212acab6-be3b-0410-9dea-997c60f758d6

Source/ResourceEditor.h

@@ -96,6 +96,7 @@ typedef struct _MY_IMAGE_RESOURCE_DIRECTORY_ENTRY {
 
 #include <stdexcept>
 
+// classes
 class CResourceDirectory;
 class CResourceDirectoryEntry;
 class CResourceDataEntry;
@@ -122,6 +123,17 @@ public:
   bool  AddExtraVirtualSize2PESection(const char* pszSectionName, int addsize);
   DWORD Save(BYTE* pbBuf, DWORD &dwSize);
 
+  // utitlity functions
+  static PIMAGE_NT_HEADERS GetNTHeaders(BYTE* pbPE);
+
+  static PRESOURCE_DIRECTORY GetResourceDirectory(
+    BYTE* pbPE,
+    DWORD dwSize,
+    PIMAGE_NT_HEADERS ntHeaders,
+    DWORD *pdwResSecVA = NULL,
+    DWORD *pdwSectionIndex = NULL
+  );
+
 private:
   BYTE* m_pbPE;
   int   m_iSize;