Add count_words for C-Strings

src/utils.h

@@ -166,6 +166,14 @@ namespace LAMMPS_NS {
      */
     size_t count_words(const std::string & text);
 
+    /**
+     * \brief Count words in C-string, ignore any whitespace matching " \t\r\n\f"
+     * \param text string that should be searched
+     * \param separators string containing characters that will be treated as whitespace
+     * \return number of words found
+     */
+    size_t count_words(const char * text);
+
     /**
      * \brief Count words in a single line, trim anything from '#' onward
      * \param text string that should be trimmed and searched