#pragma once

class ICommandLine {
   public:
    virtual void CreateCmdLine(const char* commandline) = 0;
    virtual void CreateCmdLine(int argc, char** argv) = 0;
    virtual const char* GetCmdLine(void) const = 0;

    // Check whether a particular parameter exists
    virtual const char* CheckParm(const char* psz,
                                  const char** ppszValue = 0) const = 0;
    virtual void RemoveParm(const char* parm) = 0;
    virtual void AppendParm(const char* pszParm, const char* pszValues) = 0;

    // Returns the argument after the one specified, or the default if not found
    virtual const char* ParmValue(const char* psz,
                                  const char* pDefaultVal = 0) const = 0;
    virtual int ParmValue(const char* psz, int nDefaultVal) const = 0;
    virtual float ParmValue(const char* psz, float flDefaultVal) const = 0;

    // Gets at particular parameters
    virtual int ParmCount() const = 0;
    virtual int FindParm(const char* psz) const = 0;  // Returns 0 if not found.
    virtual const char* GetParm(int nIndex) const = 0;

    // copies the string passwed
    virtual void SetParm(int nIndex, char const* pNewParm) = 0;

    virtual const char* ParmValueByIndex(int nIndex,
                                         const char* pDefaultVal = 0) const = 0;
};