Mercurial > code
comparison modules/zip/libzip/lib/zip_set_archive_comment.c @ 527:8f8c32f102f1
Zip: resurrection
author | David Demelier <markand@malikania.fr> |
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date | Wed, 01 Jun 2016 17:36:52 +0200 |
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526:b26d8be94adb | 527:8f8c32f102f1 |
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1 /* | |
2 zip_set_archive_comment.c -- set archive comment | |
3 Copyright (C) 2006-2014 Dieter Baron and Thomas Klausner | |
4 | |
5 This file is part of libzip, a library to manipulate ZIP archives. | |
6 The authors can be contacted at <libzip@nih.at> | |
7 | |
8 Redistribution and use in source and binary forms, with or without | |
9 modification, are permitted provided that the following conditions | |
10 are met: | |
11 1. Redistributions of source code must retain the above copyright | |
12 notice, this list of conditions and the following disclaimer. | |
13 2. Redistributions in binary form must reproduce the above copyright | |
14 notice, this list of conditions and the following disclaimer in | |
15 the documentation and/or other materials provided with the | |
16 distribution. | |
17 3. The names of the authors may not be used to endorse or promote | |
18 products derived from this software without specific prior | |
19 written permission. | |
20 | |
21 THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS | |
22 OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED | |
23 WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
24 ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY | |
25 DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
26 DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE | |
27 GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS | |
28 INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER | |
29 IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR | |
30 OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN | |
31 IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
32 */ | |
33 | |
34 | |
35 #include <stdlib.h> | |
36 | |
37 #include "zipint.h" | |
38 | |
39 | |
40 ZIP_EXTERN int | |
41 zip_set_archive_comment(zip_t *za, const char *comment, zip_uint16_t len) | |
42 { | |
43 zip_string_t *cstr; | |
44 | |
45 if (ZIP_IS_RDONLY(za)) { | |
46 zip_error_set(&za->error, ZIP_ER_RDONLY, 0); | |
47 return -1; | |
48 } | |
49 | |
50 if (len > 0 && comment == NULL) { | |
51 zip_error_set(&za->error, ZIP_ER_INVAL, 0); | |
52 return -1; | |
53 } | |
54 | |
55 if (len > 0) { | |
56 if ((cstr=_zip_string_new((const zip_uint8_t *)comment, len, ZIP_FL_ENC_GUESS, &za->error)) == NULL) | |
57 return -1; | |
58 | |
59 if (_zip_guess_encoding(cstr, ZIP_ENCODING_UNKNOWN) == ZIP_ENCODING_CP437) { | |
60 _zip_string_free(cstr); | |
61 zip_error_set(&za->error, ZIP_ER_INVAL, 0); | |
62 return -1; | |
63 } | |
64 } | |
65 else | |
66 cstr = NULL; | |
67 | |
68 _zip_string_free(za->comment_changes); | |
69 za->comment_changes = NULL; | |
70 | |
71 if (((za->comment_orig && _zip_string_equal(za->comment_orig, cstr)) | |
72 || (za->comment_orig == NULL && cstr == NULL))) { | |
73 _zip_string_free(cstr); | |
74 za->comment_changed = 0; | |
75 } | |
76 else { | |
77 za->comment_changes = cstr; | |
78 za->comment_changed = 1; | |
79 } | |
80 | |
81 return 0; | |
82 } |