/*
 * Mimas conversion tools
 *
 * Copyright (C) 2010 Benjamin Moody
 *
 * This program is free software: you can redistribute it and/or
 * modify it under the terms of the GNU General Public License as
 * published by the Free Software Foundation; either version 3 of the
 * License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

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

#include "utils.h"
#include "convert.h"

char *ti83p_to_ascii(const char *text)
{
  int i, n;
  char *s;

  n = strlen(text);
  s = xnew(char, n + 1);
  for (i = 0; i < n; i++) {
    if (text[i] == '[')
      s[i] = '@';
    else if (text[i] == '\301')
      s[i] = '[';
    else if (text[i] < ' ' || text[i] > '~')
      s[i] = '?';
    else
      s[i] = text[i];
  }
  s[n] = 0;
  return s;
}

char *ascii_to_ti83p(const char *text)
{
  int i, n;
  char *s;

  n = strlen(text);
  s = xnew(char, n + 1);
  for (i = 0; i < n; i++) {
    if (text[i] == '@')
      s[i] = '[';
    else if (text[i] == '[')
      s[i] = '\301';
    else if ((unsigned char) text[i] < ' ')
      s[i] = ' ';
    else if ((unsigned char) text[i] > '~')
      s[i] = '?';
    else
      s[i] = text[i];
  }
  s[n] = 0;
  return s;
}