1/*-
2 * Copyright (c) 2003-2012 Tim Kientzle
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``AS IS'' AND ANY EXPRESS OR
15 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
16 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
17 * IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY DIRECT, INDIRECT,
18 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
19 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
20 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
21 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
23 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26#include "archive_platform.h"
27
28#ifdef HAVE_ERRNO_H
29#include <errno.h>
30#endif
31
32#include "archive.h"
33#include "archive_private.h"
34#include "archive_read_private.h"
35
36int
37archive_read_set_format(struct archive *_a, int code)
38{
39  int r1, r2, slots, i;
40  char str[10];
41  struct archive_read *a = (struct archive_read *)_a;
42
43  if ((r1 = archive_read_support_format_by_code(_a, code)) < (ARCHIVE_OK))
44    return r1;
45
46  r1 = r2 = (ARCHIVE_OK);
47  if (a->format)
48    r2 = (ARCHIVE_WARN);
49  switch (code & ARCHIVE_FORMAT_BASE_MASK)
50  {
51    case ARCHIVE_FORMAT_7ZIP:
52      strcpy(str, "7zip");
53      break;
54    case ARCHIVE_FORMAT_AR:
55      strcpy(str, "ar");
56      break;
57    case ARCHIVE_FORMAT_CAB:
58      strcpy(str, "cab");
59      break;
60    case ARCHIVE_FORMAT_CPIO:
61      strcpy(str, "cpio");
62      break;
63    case ARCHIVE_FORMAT_EMPTY:
64      strcpy(str, "empty");
65      break;
66    case ARCHIVE_FORMAT_ISO9660:
67      strcpy(str, "iso9660");
68      break;
69    case ARCHIVE_FORMAT_LHA:
70      strcpy(str, "lha");
71      break;
72    case ARCHIVE_FORMAT_MTREE:
73      strcpy(str, "mtree");
74      break;
75    case ARCHIVE_FORMAT_RAR:
76      strcpy(str, "rar");
77      break;
78    case ARCHIVE_FORMAT_RAR_V5:
79      strcpy(str, "rar5");
80      break;
81    case ARCHIVE_FORMAT_RAW:
82      strcpy(str, "raw");
83      break;
84    case ARCHIVE_FORMAT_TAR:
85      strcpy(str, "tar");
86      break;
87    case ARCHIVE_FORMAT_WARC:
88      strcpy(str, "warc");
89      break;
90    case ARCHIVE_FORMAT_XAR:
91      strcpy(str, "xar");
92      break;
93    case ARCHIVE_FORMAT_ZIP:
94      strcpy(str, "zip");
95      break;
96    default:
97      archive_set_error(&a->archive, ARCHIVE_ERRNO_PROGRAMMER,
98          "Invalid format code specified");
99      return (ARCHIVE_FATAL);
100  }
101
102  slots = sizeof(a->formats) / sizeof(a->formats[0]);
103  a->format = &(a->formats[0]);
104  for (i = 0; i < slots; i++, a->format++) {
105    if (!a->format->name || !strcmp(a->format->name, str))
106      break;
107  }
108  if (!a->format->name || strcmp(a->format->name, str))
109  {
110    archive_set_error(&a->archive, ARCHIVE_ERRNO_PROGRAMMER,
111        "Internal error: Unable to set format");
112    r1 = (ARCHIVE_FATAL);
113  }
114
115  return (r1 < r2) ? r1 : r2;
116}
117