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// Copyright (C) 2011 Internet Systems Consortium, Inc. ("ISC")
//
// Permission to use, copy, modify, and/or distribute this software for any
// purpose with or without fee is hereby granted, provided that the above
// copyright notice and this permission notice appear in all copies.
//
// THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
// REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
// AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
// INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
// LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
// OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
// PERFORMANCE OF THIS SOFTWARE.
#ifndef __CHARACTER_STRING_H
#define __CHARACTER_STRING_H
#include <string>
#include <exceptions/exceptions.h>
#include <util/buffer.h>
namespace isc {
namespace dns {
// \brief Some utility functions to extract <character-string> from string
// or InputBuffer
//
// <character-string> is expressed in one or two ways: as a contiguous set
// of characters without interior spaces, or as a string beginning with a "
// and ending with a ". Inside a " delimited string any character can
// occur, except for a " itself, which must be quoted using \ (back slash).
// Ref. RFC1035
namespace characterstr {
/// Get a <character-string> from a string
///
/// \param input_str The input string
/// \param input_iterator The iterator from which to start extracting,
/// the iterator will be updated to new position after the function
/// is returned
/// \return A std::string that contains the extracted <character-string>
std::string getNextCharacterString(const std::string& input_str,
std::string::const_iterator& input_iterator);
/// Get a <character-string> from a input buffer
///
/// \param buffer The input buffer
/// \param len The input buffer total length
/// \return A std::string that contains the extracted <character-string>
std::string getNextCharacterString(util::InputBuffer& buffer, size_t len);
} // namespace characterstr
} // namespace dns
} // namespace isc
#endif // __CHARACTER_STRING_H
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