Added ostream serialization support for vsg::CommandLine.

Author: robertosfield

include/vsg/utils/CommandLine.h

@@ -46,9 +46,13 @@ namespace vsg
         CommandLine(int* argc, char** argv);
 
         int& argc() { return *_argc; }
+        const int& argc() const { return *_argc; }
+
         char** argv() { return _argv; }
+        const char* const* argv() const { return _argv; }
 
         char* operator[](int i) { return _argv[i]; }
+        const char* operator[](int i) const { return _argv[i]; }
 
         template<typename T>
         bool read(int& i, T& v)
@@ -267,4 +271,15 @@ namespace vsg
         return false;
     }
 
+    inline std::ostream& operator<<(std::ostream& output, const CommandLine& arguments)
+    {
+        for(int i=0; i < arguments.argc(); ++i)
+        {
+            if (i>0) output << ' ';
+            output << arguments[i];
+        }
+        return output;
+    }
+
+
 } // namespace vsg