/*      $NetBSD: test.c,v 1.1.1.8 2023/08/18 18:36:51 christos Exp $    */

/*
* Copyright (c) Christos Zoulas 2003.
* All Rights Reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
*    notice immediately at the beginning of the file, without modification,
*    this list of conditions, and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
*    notice, this list of conditions and the following disclaimer in the
*    documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/

#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <errno.h>
#include <time.h>

#include "magic.h"

static const char *prog;

static void *
xrealloc(void *p, size_t n)
{
       p = realloc(p, n);
       if (p == NULL) {
               (void)fprintf(stderr, "%s ERROR slurping file: %s\n",
                       prog, strerror(errno));
               exit(10);
       }
       return p;
}

static char *
slurp(FILE *fp, size_t *final_len)
{
       size_t len = 256;
       int c;
       char *l = xrealloc(NULL, len), *s = l;

       for (c = getc(fp); c != EOF; c = getc(fp)) {
               if (s == l + len) {
                       s = l + len;
                       len *= 2;
                       l = xrealloc(l, len);
               }
               *s++ = c;
       }
       if (s != l && s[-1] == '\n')
               s--;
       if (s == l + len) {
               l = xrealloc(l, len + 1);
               s = l + len;
       }
       *s++ = '\0';

       *final_len = s - l;
       return xrealloc(l, s - l);
}

int
main(int argc, char **argv)
{
       struct magic_set *ms = NULL;
       const char *result;
       size_t result_len, desired_len;
       char *desired = NULL;
       int e = EXIT_FAILURE, flags, c;
       FILE *fp;

       setenv("TZ", "UTC", 1);
       tzset();


       prog = strrchr(argv[0], '/');
       if (prog)
               prog++;
       else
               prog = argv[0];

       if (argc == 1)
               return 0;

       flags = 0;
       while ((c = getopt(argc, argv, "ek")) != -1)
               switch (c) {
               case 'e':
                       flags |= MAGIC_ERROR;
                       break;
               case 'k':
                       flags |= MAGIC_CONTINUE;
                       break;
               default:
                       goto usage;
               }

       argc -= optind;
       argv += optind;
       if (argc != 2) {
usage:
               (void)fprintf(stderr,
                   "Usage: %s [-ek] TEST-FILE RESULT\n", prog);
               goto bad;
       }

       ms = magic_open(flags);
       if (ms == NULL) {
               (void)fprintf(stderr, "%s: ERROR opening MAGIC_NONE: %s\n",
                   prog, strerror(errno));
               return e;
       }
       if (magic_load(ms, NULL) == -1) {
               (void)fprintf(stderr, "%s: ERROR loading with NULL file: %s\n",
                   prog, magic_error(ms));
               goto bad;
       }

       if ((result = magic_file(ms, argv[0])) == NULL) {
               (void)fprintf(stderr, "%s: ERROR loading file %s: %s\n",
                   prog, argv[1], magic_error(ms));
               goto bad;
       }
       fp = fopen(argv[1], "r");
       if (fp == NULL) {
               (void)fprintf(stderr, "%s: ERROR opening `%s': %s",
                   prog, argv[1], strerror(errno));
               goto bad;
       }
       desired = slurp(fp, &desired_len);
       fclose(fp);
       (void)printf("%s: %s\n", argv[0], result);
       if (strcmp(result, desired) != 0) {
           result_len = strlen(result);
           (void)fprintf(stderr, "%s: ERROR: result was (len %zu)\n%s\n"
               "expected (len %zu)\n%s\n", prog, result_len, result,
               desired_len, desired);
           goto bad;
       }
       e = 0;
bad:
       free(desired);
       if (ms)
               magic_close(ms);
       return e;
}