Make changes

include/utils.hpp

@@ -131,6 +131,26 @@ std::string concatpath(const std::string &left, const std::string &right);
 
 // A function that prints the structure of a sparse matrix to screen.
 void print_sp_matrix_structure(const arma::sp_cx_mat &A);
+
+// A function that splits a string using a delimiter
+std::vector<std::string> split(const std::string &s, char delim);
+
+// trim from left
+std::string &ltrim(std::string &s, const char *t = " \t\n\r\f\v");
+
+// trim from right
+std::string &rtrim(std::string &s, const char *t = " \t\n\r\f\v");
+
+// trim from left & right
+std::string &trim(std::string &s, const char *t = " \t\n\r\f\v");
+
+// copying versions
+
+std::string ltrim_copy(std::string s, const char *t = " \t\n\r\f\v");
+
+std::string rtrim_copy(std::string s, const char *t = " \t\n\r\f\v");
+
+std::string trim_copy(std::string s, const char *t = " \t\n\r\f\v");
 } // namespace utils
 
 #endif