text: /*
   *  --- Revised 3-Clause BSD License ---
   *  Copyright (C) 2016-2019, SEMTECH (International) AG.
   *  All rights reserved.
   *
   *  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 copyright holder 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 SEMTECH 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.
   */
  
  #if defined(CFG_prog_genkwcrcs)
  
  #include <stdio.h>
  #include "uj.h"
  
  #define P1 257
  #define P2 65537
  #define SC (32-8)
  
  #define FINISH_CRC(crc)    X((crc) ? (crc) : 1)
  #define UPDATE_CRC(crc, c) X((((crc)>>SC)*P2) ^ ((crc)*P1) ^ ((c)&0x7F))
  #define STR(expr) CAT(XXX,expr)
  #define STR2(p) #p
  #define CAT(p, ...) STR2(p ##__VA_ARGS__)
  
  ujcrc_t X(ujcrc_t x) {
      return x;
  }
  
  ujcrc_t calcCRC(const char* s) {
      ujcrc_t crc = 0;
      int c;
      while( (c=*s++) ) {
          crc = UPDATE_CRC(crc,c);
      }
      return FINISH_CRC(crc);
  }
  
  int main (int argc, char** argv) {
      argv++;
      argc--;
      ujcrc_t crcs[argc];
      for( int i=0; i<argc; i++ ) {
          ujcrc_t crc = calcCRC(argv[i]);
          crcs[i] = crc;
          for( int j=i-1; j>=0; j-- ) {
              if( crcs[j] == crc && strcmp(argv[j], argv[i]) != 0 ) {
                  fprintf(stderr, "Collision: %s(0x%X) vs %s(0x%X)\n",
                          argv[i], crc, argv[j], crcs[j]);
                  exit(1);
              }
          }
      }
      printf("// Auto generated by genkwcrcs - DO NOT CHANGE!\n");
      printf("#define UJ_UPDATE_CRC(crc,c) %s\n", 4+STR(UPDATE_CRC(crc,c)));
      printf("#define UJ_FINISH_CRC(crc)   %s\n", 4+STR(FINISH_CRC(crc)));
      for( int i=0; i<argc; i++ ) {
          printf("#define J_%-20s ((ujcrc_t)(0x%08X))\n", argv[i], crcs[i]);
      }
      return 0;
  }
  
  #endif // defined(CFG_prog_genkwcrcs)
  