contrib/libjeffpc/hexdump.c

   1 /*
   2  * Copyright (c) 2016 Josef 'Jeff' Sipek <jeffpc@josefsipek.net>
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a copy
   5  * of this software and associated documentation files (the "Software"), to deal
   6  * in the Software without restriction, including without limitation the rights
   7  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
   8  * copies of the Software, and to permit persons to whom the Software is
   9  * furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice shall be included in
  12  * all copies or substantial portions of the Software.
  13  *
  14  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  15  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  17  * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  18  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  19  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  20  * SOFTWARE.
  21  */
  22
  23 #include <stdint.h>
  24
  25 #include <jeffpc/hexdump.h>
  26
  27 void hexdump(char *out, const void *in, size_t inlen, bool upper)
  28 {
  29         static const char uppercase[16] = "0123456789ABCDEF";
  30         static const char lowercase[16] = "0123456789abcdef";
  31         const char *table = upper ? uppercase : lowercase;
  32         const uint8_t *tmp = in;
  33         size_t i;
  34
  35         for (i = 0; i < inlen; i++) {
  36                 out[i * 2]     = table[tmp[i] >> 4];
  37                 out[i * 2 + 1] = table[tmp[i] & 0xf];
  38         }
  39 }
  40
  41 void hexdumpz(char *out, const void *in, size_t inlen, bool upper)
  42 {
  43         hexdump(out, in, inlen, upper);
  44
  45         out[inlen * 2] = '\0';
  46 }