mdw@git.distorted.org.uk Git - disorder/blob - lib/hex.h

   1 /*
   2  * This file is part of DisOrder
   3  * Copyright (C) 2004, 2005, 2007, 2008 Richard Kettlewell
   4  *
   5  * This program is free software: you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation, either version 3 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  17  */
  18 /** @file lib/hex.h @brief Hexadecimal encoding and decoding */
  19
  20 #ifndef HEX_H
  21 #define HEX_H
  22
  23 char *hex(const uint8_t *ptr, size_t n);
  24 /* convert an octet-string to hex */
  25
  26 uint8_t *unhex(const char *s, size_t *np);
  27 /* convert a hex string back to an octet string */
  28
  29 int unhexdigit(int c);
  30 /* if @c@ is a hex digit, return its value.  else return -1 and log an error. */
  31
  32 int unhexdigitq(int c);
  33 /* same as unhexdigit() but doesn't issue an error message */
  34
  35 #endif /* HEX_H */
  36
  37 /*
  38 Local Variables:
  39 c-basic-offset:2
  40 comment-column:40
  41 End:
  42 */