added logger

include/matador/utils/string.hpp

@@ -2,9 +2,22 @@
 #define QUERY_STRING_HPP
 
 #include <string>
+#include <vector>
 
 namespace matador::utils {
 
+/**
+ * Splits a string by a delimiter and
+ * add the string tokens to a vector. The
+ * size of the vector is returned.
+ *
+ * @param str The string to split.
+ * @param delim The delimiter character.
+ * @param values The result vector.
+ * @return The size of the vector.
+ */
+size_t split(const std::string &str, char delim, std::vector<std::string> &values);
+
 /**
  * Replaces all occurrences of string from in given string
  * with string to.