text: //
  //  coding.h
  //  skiring
  //
  // Redistribution and use in source and binary forms, with or without
  // modification, are permitted provided that the following conditions
  // are met:
  //
  // * Redistributions of source code must retain the above copyright
  //   notice, this list of conditions and the following disclaimer.
  //
  // * Redistributions in binary form must reproduce the above copyright
  //   notice, this list of conditions and the following disclaimer in the
  //   documentation and/or other materials provided with the distribution.
  //
  // * Neither the name of the author nor the names of its contributors
  //   may be used to endorse or promote products derived from this software
  //   without specific prior written permission.
  //
  // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  // HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
  // INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
  // BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
  // OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
  // AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  // LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY
  // WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  // POSSIBILITY OF SUCH DAMAGE.
  
  #ifndef skiring_coding_h
  #define skiring_coding_h
  
  #include "ring.h"
  
  #define SK_MAGIC_NUMER "SKRG"
  #define SK_MAX_STRING_SIZE 255
  
  typedef char SkStringSize;
  
  typedef enum {
      SUCCESS = 0,
      IO_ERROR,
      WRONG_MAGIC_NUMBER
  } SkLoadStatus;
  
  void storeRing(FILE* fp, SkKeyRing* ring);
  SkLoadStatus loadRing(FILE* fp, SkKeyRing* ring);
  
  #endif
  