substitution.h

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// Parse the $(...) substitution args
// Author: Max Schwarz <max.schwarz@uni-bonn.de>
 
#ifndef ROSMON_LAUNCH_SUBSTITUTION_H
#define ROSMON_LAUNCH_SUBSTITUTION_H
 
#include <string>
#include <stdexcept>
 
#include <fmt/format.h>
 
namespace rosmon
{
namespace launch
{
 
class ParseContext;
 
class SubstitutionException : public std::exception
{
public:
        explicit SubstitutionException(const std::string& msg)
         : m_msg(msg)
        {}
 
        virtual ~SubstitutionException() throw()
        {}
 
        virtual const char* what() const noexcept override
        { return m_msg.c_str(); }
 
        template<typename... Args>
        static SubstitutionException format(const char* format, const Args& ... args)
        {
                return SubstitutionException(fmt::format(format, args...));
        }
private:
        std::string m_msg;
};
 
namespace substitutions
{
        std::string anon(const std::string& name, ParseContext& context);
        std::string arg(const std::string& name, const ParseContext& context);
        std::string dirname(const ParseContext& context);
        std::string env(const std::string& name);
        std::string optenv(const std::string& name, const std::string& defaultValue);
 
        std::string find_stupid(const std::string& name);
}
 
std::string parseSubstitutionArgs(const std::string& input, ParseContext& context);
 
}
}
 
#endif