archive_read_set_format.c revision 348607 
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__FBSDID("$FreeBSD$");
28
29#ifdef HAVE_ERRNO_H
30#include <errno.h>
31#endif
32
33#include "archive.h"
34#include "archive_private.h"
35#include "archive_read_private.h"
36
37int
38archive_read_set_format(struct archive *_a, int code)
39{
40  int r1, r2, slots, i;
41  char str[10];
42  struct archive_read *a = (struct archive_read *)_a;
43
44  if ((r1 = archive_read_support_format_by_code(_a, code)) < (ARCHIVE_OK))
45    return r1;
46
47  r1 = r2 = (ARCHIVE_OK);
48  if (a->format)
49    r2 = (ARCHIVE_WARN);
50  switch (code & ARCHIVE_FORMAT_BASE_MASK)
51  {
52    case ARCHIVE_FORMAT_7ZIP:
53      strcpy(str, "7zip");
54      break;
55    case ARCHIVE_FORMAT_AR:
56      strcpy(str, "ar");
57      break;
58    case ARCHIVE_FORMAT_CAB:
59      strcpy(str, "cab");
60      break;
61    case ARCHIVE_FORMAT_CPIO:
62      strcpy(str, "cpio");
63      break;
64    case ARCHIVE_FORMAT_ISO9660:
65      strcpy(str, "iso9660");
66      break;
67    case ARCHIVE_FORMAT_LHA:
68      strcpy(str, "lha");
69      break;
70    case ARCHIVE_FORMAT_MTREE:
71      strcpy(str, "mtree");
72      break;
73    case ARCHIVE_FORMAT_RAR:
74      strcpy(str, "rar");
75      break;
76    case ARCHIVE_FORMAT_RAR_V5:
77      strcpy(str, "rar5");
78      break;
79    case ARCHIVE_FORMAT_TAR:
80      strcpy(str, "tar");
81      break;
82    case ARCHIVE_FORMAT_XAR:
83      strcpy(str, "xar");
84      break;
85    case ARCHIVE_FORMAT_ZIP:
86      strcpy(str, "zip");
87      break;
88    default:
89      archive_set_error(&a->archive, ARCHIVE_ERRNO_PROGRAMMER,
90          "Invalid format code specified");
91      return (ARCHIVE_FATAL);
92  }
93
94  slots = sizeof(a->formats) / sizeof(a->formats[0]);
95  a->format = &(a->formats[0]);
96  for (i = 0; i < slots; i++, a->format++) {
97    if (!a->format->name || !strcmp(a->format->name, str))
98      break;
99  }
100  if (!a->format->name || strcmp(a->format->name, str))
101  {
102    archive_set_error(&a->archive, ARCHIVE_ERRNO_PROGRAMMER,
103        "Internal error: Unable to set format");
104    r1 = (ARCHIVE_FATAL);
105  }
106
107  return (r1 < r2) ? r1 : r2;
108}
109