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#ifndef __KINGATE_CGI_INTERFACE_H
#define __KINGATE_CGI_INTERFACE_H
#include <iostream>
#include <string>
#include <map>
/**
* @file
* @brief the abstract base for various interfaces to CGI.
*/
namespace kingate {
using namespace std;
/**
* The abstract base class for interface to CGI subsystem.
*/
class cgi_interface {
public:
/**
* The type for map holding 'environment' meta-variables.
*/
typedef map<string,string> metavars_t;
/**
* The environment variables.
*/
metavars_t metavars;
cgi_interface() { }
virtual ~cgi_interface() { }
/**
* Check to see whether there is a particular 'environment'
* meta-variable passed.
* @param n the variable name.
* @return true if yes.
*/
bool has_meta(const string& n) const;
/**
* Retrieve the 'environment' variable.
* @param n the variable name.
* @return the variable contents.
* @see exception_notfound
*/
const string& get_meta(const string& n) const;
/**
* Fetch reference to CGI 'stdout' stream.
* @return reference to the corresponding ostream object.
*/
virtual ostream& out() = 0;
/**
* Fetch reference to CGI 'stdin' stream.
* @return reference to the corresponding istream object.
*/
virtual istream& in() = 0;
/**
* Fetch reference to CGI 'stderr' stream.
* @return reference to the corresponding ostream object.
*/
virtual ostream& err() = 0;
};
}
#endif /* __KINGATE_CGI_INTERFACE_H */
/*
* vim:set ft=cpp:
*/
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