git.distorted.org.uk Git - u/mdw/catacomb/blob - mpdump.c

   1 /* -*-c-*-
   2  *
   3  * $Id: mpdump.c,v 1.2 2004/04/08 01:36:15 mdw Exp $
   4  *
   5  * Dump a multiprecision integer as C data
   6  *
   7  * (c) 2004 Straylight/Edgeware
   8  */
   9
  10 /*----- Licensing notice --------------------------------------------------*
  11  *
  12  * This file is part of Catacomb.
  13  *
  14  * Catacomb is free software; you can redistribute it and/or modify
  15  * it under the terms of the GNU Library General Public License as
  16  * published by the Free Software Foundation; either version 2 of the
  17  * License, or (at your option) any later version.
  18  *
  19  * Catacomb is distributed in the hope that it will be useful,
  20  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  21  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  22  * GNU Library General Public License for more details.
  23  *
  24  * You should have received a copy of the GNU Library General Public
  25  * License along with Catacomb; if not, write to the Free
  26  * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
  27  * MA 02111-1307, USA.
  28  */
  29
  30 /*----- Header files ------------------------------------------------------*/
  31
  32 #include <errno.h>
  33 #include <stdio.h>
  34 #include <string.h>
  35
  36 #include "mp.h"
  37
  38 /*----- Main code ---------------------------------------------------------*/
  39
  40 int main(int argc, char *argv[])
  41 {
  42   mp *x;
  43   int i;
  44   int w, n;
  45
  46   if (argc != 2) {
  47     fprintf(stderr, "%s: missing argument\n", argv[0]);
  48     return (1);
  49   }
  50   if ((x = mp_readstring(0, argv[1], 0, 0)) == 0) {
  51     fprintf(stderr, "%s: bad integer `%s'", argv[0], argv[1]);
  52     return (1);
  53   }
  54   fputs("  ", stdout);
  55   w = (MPW_BITS + 3)/4;
  56   n = 1;
  57   while (2 + 2 * n * (4 + w) < 72) n <<= 1;
  58   i = 0;
  59   for (;;) {
  60     printf("0x%0*x", w, x->v[i]);
  61     i++;
  62     if (i >= MP_LEN(x)) break;
  63     fputs(",", stdout);
  64     if (i % n) fputs(" ", stdout); else fputs("\n  ", stdout);
  65   }
  66   if (fflush(stdout) || ferror(stdout)) {
  67     fprintf(stderr, "%s: error writing data: %s", argv[0], strerror(errno));
  68     return (1);
  69   }
  70   fputs("\n", stdout);
  71   return (0);
  72 }
  73
  74 /*----- That's all, folks -------------------------------------------------*/