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
36 int
archive_read_set_format(struct archive * _a,int code)37 archive_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