MString now string builds with << operator.

MString.cpp

@@ -47,6 +47,11 @@ namespace coreutils {
 	free(data);
    }
 
+   int overflow(int c) {
+      std::cout << '{' << c << "}";   
+      return 0;
+   }
+
    MString& MString::operator=(coreutils::ZString& value) {
       if(*this == value)
 	return *this;
@@ -71,9 +76,33 @@ namespace coreutils {
    }
 
    MString& MString::operator<<(const char *value) {
+      int temp = length;
       int len = strlen(value);
+      setSize(len + length);
+      memcpy(data + temp, value, len);
+      return *this;            
+   }
+
+   MString& MString::operator<<(const int value) {
+      std::stringstream temp;
+      temp << value;
+      *this << temp.str();
+      return *this;            
+   }
+
+   MString& MString::operator<<(coreutils::ZString &zstring) {
+      int temp = length;
+      int len = length + zstring.getLength();
       setSize(len);
-      memcpy(data, value, len);
+      memcpy(data + temp, zstring.getData(), zstring.getLength());
+      return *this;            
+   }
+
+   MString& MString::operator<<(std::string value) {
+      int temp = length;
+      int len = length + value.length();
+      setSize(len);
+      memcpy(data + temp, value.c_str(), value.length());
       return *this;            
    }