/*
 *  basecvt.c
 *
 *  Convert integer values specified on the command line from one input
 *  base to another.  Accepts input and output bases between 2 and 36
 *  inclusive.
 *
 * ***** BEGIN LICENSE BLOCK *****
 * Version: MPL 1.1/GPL 2.0/LGPL 2.1
 *
 * The contents of this file are subject to the Mozilla Public License Version
 * 1.1 (the "License"); you may not use this file except in compliance with
 * the License. You may obtain a copy of the License at
 * http://www.mozilla.org/MPL/
 *
 * Software distributed under the License is distributed on an "AS IS" basis,
 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
 * for the specific language governing rights and limitations under the
 * License.
 *
 * The Original Code is the MPI Arbitrary Precision Integer Arithmetic library.
 *
 * The Initial Developer of the Original Code is
 * Michael J. Fromberger.
 * Portions created by the Initial Developer are Copyright (C) 1998
 * the Initial Developer. All Rights Reserved.
 *
 * Contributor(s):
 *
 * Alternatively, the contents of this file may be used under the terms of
 * either the GNU General Public License Version 2 or later (the "GPL"), or
 * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
 * in which case the provisions of the GPL or the LGPL are applicable instead
 * of those above. If you wish to allow use of your version of this file only
 * under the terms of either the GPL or the LGPL, and not to allow others to
 * use your version of this file under the terms of the MPL, indicate your
 * decision by deleting the provisions above and replace them with the notice
 * and other provisions required by the GPL or the LGPL. If you do not delete
 * the provisions above, a recipient may use your version of this file under
 * the terms of any one of the MPL, the GPL or the LGPL.
 *
 * ***** END LICENSE BLOCK ***** */
/* $Id: basecvt.c,v 1.3 2004/04/27 23:04:37 gerv%gerv.net Exp $ */

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#include "mpi.h"

#define IBASE     10
#define OBASE     16
#define USAGE     "Usage: %s ibase obase [value]\n"
#define MAXBASE   64
#define MINBASE   2

int main(int argc, char *argv[])
{
  int    ix, ibase = IBASE, obase = OBASE;
  mp_int val;

  ix = 1;
  if(ix < argc) {
    ibase = atoi(argv[ix++]);
    
    if(ibase < MINBASE || ibase > MAXBASE) {
      fprintf(stderr, "%s: input radix must be between %d and %d inclusive\n",
	      argv[0], MINBASE, MAXBASE);
      return 1;
    }
  }
  if(ix < argc) {
    obase = atoi(argv[ix++]);

    if(obase < MINBASE || obase > MAXBASE) {
      fprintf(stderr, "%s: output radix must be between %d and %d inclusive\n",
	      argv[0], MINBASE, MAXBASE);
      return 1;
    }
  }

  mp_init(&val);
  while(ix < argc) {
    char  *out;
    int    outlen;

    mp_read_radix(&val, argv[ix++], ibase);

    outlen = mp_radix_size(&val, obase);
    out = calloc(outlen, sizeof(char));
    mp_toradix(&val, out, obase);

    printf("%s\n", out);
    free(out);
  }

  mp_clear(&val);

  return 0;
}