New to_uppercase utils function (#47)

Signed-off-by: Juan López Fernández <juanlopez@eprosima.com>

Author: juanlofer-eprosima

cpp_utils/include/cpp_utils/utils.hpp

@@ -77,6 +77,16 @@ CPP_UTILS_DllAPI bool match_pattern(
 CPP_UTILS_DllAPI void to_lowercase(
         std::string& st) noexcept;
 
+/**
+ * @brief Convert every alphabetic char in string to upper case
+ *
+ * @attention This function modifies the object given
+ *
+ * @param [in,out] st : string to modify
+ */
+CPP_UTILS_DllAPI void to_uppercase(
+        std::string& st) noexcept;
+
 template <typename T, bool Ptr = false>
 std::ostream& element_to_stream(
         std::ostream& os,

cpp_utils/src/cpp/utils.cpp

@@ -89,6 +89,16 @@ void to_lowercase(
             });
 }
 
+void to_uppercase(
+        std::string& st) noexcept
+{
+    std::transform(st.begin(), st.end(), st.begin(),
+            [](unsigned char c)
+            {
+                return std::toupper(c);
+            });
+}
+
 void tsnh(
         const Formatter& formatter)
 {