add mem.isstring()

Author: torusrxxx

src/dbg/expressionfunctions.cpp

@@ -82,6 +82,7 @@ void ExpressionFunctions::Init()
     RegisterEasy("mem.base", membase);
     RegisterEasy("mem.size", memsize);
     RegisterEasy("mem.iscode", memiscode);
+    RegisterEasy("mem.isstring", memisstring);
     RegisterEasy("mem.decodepointer", memdecodepointer);
 
     //Disassembly

src/dbg/exprfunc.cpp

@@ -122,6 +122,16 @@ namespace Exprfunc
         return MemIsCodePage(addr, false);
     }
 
+    duint memisstring(duint addr)
+    {
+        STRING_TYPE strType;
+        disasmispossiblestring(addr, &strType);
+        if(strType != STRING_TYPE::str_none)
+            return strType == STRING_TYPE::str_unicode ? 2 : 1;
+        else
+            return 0;
+    }
+
     duint memdecodepointer(duint ptr)
     {
         auto decoded = ptr;

src/dbg/exprfunc.h

@@ -27,6 +27,7 @@ namespace Exprfunc
     duint membase(duint addr);
     duint memsize(duint addr);
     duint memiscode(duint addr);
+    duint memisstring(duint addr);
     duint memdecodepointer(duint ptr);
 
     duint dislen(duint addr);