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/*
* tibdecode - Decompile a TI BASIC program
* Copyright (C) 2015-2017 Delwink, LLC
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, version 3 only.
*
* 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 Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "tiberr.h"
#include "tibtranscode.h"
#define USAGE_INFO "USAGE: tibdecode [options]\n\n\
tibdecode reads a TI-82 or TI-83 program from stdin and prints to stdout.\n\n\
OPTIONS:\n\
\t-d\tShows the decimal value of unknown characters in {}\n\
\t-h\tPrints this help message and exits\n\
\t-v\tPrints version info and exits\n"
#define VERSION_INFO "tibdecode (Delwink LiberTI) 0.0.0\n\
Copyright (C) 2015-2017 Delwink, LLC\n\
License AGPLv3: GNU AGPL version 3 only <http://gnu.org/licenses/agpl.html>.\n\
This is libre software: you are free to change and redistribute it.\n\
There is NO WARRANTY, to the extent permitted by law.\n\n\
Written by David McMackins II."
#if _BSD_SOURCE || _SVID_SOURCE || _XOPEN_SOURCE
#include <ctype.h>
#else
static int
isascii(int c)
{
return c & 0x7F;
}
#endif
int
main(int argc, char *argv[])
{
bool debug = false;
if (argc > 1)
{
int c;
while ((c = getopt(argc, argv, "dhv")) != -1)
{
switch (c)
{
case 'd':
debug = true;
break;
case 'h':
puts(USAGE_INFO);
return 0;
case 'v':
puts(VERSION_INFO);
return 0;
case '?':
return 1;
}
}
}
struct tib_expr translated;
unsigned long parsed;
tib_errno = tib_fread(&translated, stdin, &parsed);
if (tib_errno)
{
fprintf(stderr,
"tibdecode: Error %d occurred while processing. Parsed %lu characters.\n",
tib_errno, parsed);
return 1;
}
char *s = tib_expr_tostr(&translated);
tib_expr_destroy(&translated);
if (NULL == s)
{
fprintf(stderr,
"tibdecode: Error %d occurred while processing\n",
tib_errno);
return 1;
}
size_t len = strlen(s);
for (size_t i = 0; i < len; ++i)
{
if (debug && !isascii(s[i]))
printf("`%d`", s[i]);
else
putchar(s[i]);
}
free(s);
return 0;
}
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