utils.hh

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#pragma once
#include <string>

extern std::string esc_str(
    std::string const & s 
); 

struct Error
{
    std::string msg; 
    Error(std::string const & msg 
    ) : msg(msg) {}
};

extern int msg_level; 
extern std::ostream & msg(int level); 
extern std::ostream & debug; 
extern std::ostream & info; 
extern std::ostream & warn; 
void error(std::string const & m);