blob: 2848457efbf8ff91001764c774250d8890c731d6 [file] [log] [blame]
/**
* @author: Jeff Thompson
* See COPYING for copyright and distribution information.
*/
#ifndef NDN_BINARYXMLDECODER_HPP
#define NDN_BINARYXMLDECODER_HPP
#include <stdexcept>
#include "../c/errors.h"
#include "../c/encoding/binary-xml-decoder.h"
namespace ndn {
/**
* A BinaryXmlDecoder extends a C ndn_BinaryXmlDecoder struct and wraps related functions.
*/
class BinaryXmlDecoder : public ndn_BinaryXmlDecoder {
public:
/**
* Initialize the base ndn_BinaryXmlDecoder struct with the input.
*/
BinaryXmlDecoder(const unsigned char *input, unsigned int inputLength)
{
ndn_BinaryXmlDecoder_init(this, (unsigned char *)input, inputLength);
}
/**
* Decode the header from the input starting at offset, and if it is a DTAG where the value is the expectedTag,
* then return true, else false. Do not update offset, including if throwing an exception.
* @param expectedTag the expected value for DTAG
* @return true if got the expected tag, else false
*/
bool peekDTag(unsigned int expectedTag)
{
int gotExpectedTag;
ndn_Error error;
if (error = ndn_BinaryXmlDecoder_peekDTag(this, expectedTag, &gotExpectedTag))
throw std::runtime_error(ndn_getErrorString(error));
return gotExpectedTag;
}
};
}
#endif