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#include <Rcpp.h>
using namespace Rcpp;
#ifndef __ENCODING_INCLUDED__
#define __ENCODING_INCLUDED__
/**
* A namespace for applying percent-encoding to
* arbitrary strings - optimised for URLs, obviously.
*/
namespace encoding{
/**
* A function for taking a hexadecimal element and converting
* it to the equivalent non-hex value. Used in internal_url_decode
*
* @param x a character array representing the hexed value.
*
* @see to_hex for the reverse operation.
*
* @return a string containing the un-hexed value of x.
*/
char from_hex (char x);
/**
* A function for taking a character value and converting
* it to the equivalent hexadecimal value. Used in internal_url_encode.
*
* @param x a character array representing the unhexed value.
*
* @see from_hex for the reverse operation.
*
* @return a string containing the now-hexed value of x.
*/
std::string to_hex(char x);
/**
* A function for decoding URLs. calls from_hex, and is
* in turn called by url_decode in urltools.cpp.
*
* @param url a string representing a percent-encoded URL.
*
* @see internal_url_encode for the reverse operation.
*
* @return a string containing the decoded URL.
*/
std::string internal_url_decode(std::string url);
/**
* A function for encoding URLs. calls to_hex, and is
* in turn called by url_encode in urltools.cpp.
*
* @param url a string representing a URL.
*
* @see internal_url_decode for the reverse operation.
*
* @return a string containing the percent-encoded version of "url".
*/
std::string internal_url_encode(std::string url);
}
#endif
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