Mercurial > embed
comparison libzip/lib/zip_file_replace.c @ 4:2306f4b04790
libzip: import 1.1.2
author | David Demelier <markand@malikania.fr> |
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date | Wed, 24 Feb 2016 21:19:28 +0100 |
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3:543b0653ea27 | 4:2306f4b04790 |
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1 /* | |
2 zip_file_replace.c -- replace file via callback function | |
3 Copyright (C) 1999-2014 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 "zipint.h" | |
36 | |
37 | |
38 ZIP_EXTERN int | |
39 zip_file_replace(zip_t *za, zip_uint64_t idx, zip_source_t *source, zip_flags_t flags) | |
40 { | |
41 if (idx >= za->nentry || source == NULL) { | |
42 zip_error_set(&za->error, ZIP_ER_INVAL, 0); | |
43 return -1; | |
44 } | |
45 | |
46 if (_zip_file_replace(za, idx, NULL, source, flags) == -1) | |
47 return -1; | |
48 | |
49 return 0; | |
50 } | |
51 | |
52 | |
53 | |
54 /* NOTE: Signed due to -1 on error. See zip_add.c for more details. */ | |
55 | |
56 zip_int64_t | |
57 _zip_file_replace(zip_t *za, zip_uint64_t idx, const char *name, zip_source_t *source, zip_flags_t flags) | |
58 { | |
59 zip_uint64_t za_nentry_prev; | |
60 | |
61 if (ZIP_IS_RDONLY(za)) { | |
62 zip_error_set(&za->error, ZIP_ER_RDONLY, 0); | |
63 return -1; | |
64 } | |
65 | |
66 za_nentry_prev = za->nentry; | |
67 if (idx == ZIP_UINT64_MAX) { | |
68 zip_int64_t i = -1; | |
69 | |
70 if (flags & ZIP_FL_OVERWRITE) | |
71 i = _zip_name_locate(za, name, flags, NULL); | |
72 | |
73 if (i == -1) { | |
74 /* create and use new entry, used by zip_add */ | |
75 if ((i=_zip_add_entry(za)) < 0) | |
76 return -1; | |
77 } | |
78 idx = (zip_uint64_t)i; | |
79 } | |
80 | |
81 if (name && _zip_set_name(za, idx, name, flags) != 0) { | |
82 if (za->nentry != za_nentry_prev) { | |
83 _zip_entry_finalize(za->entry+idx); | |
84 za->nentry = za_nentry_prev; | |
85 } | |
86 return -1; | |
87 } | |
88 | |
89 /* does not change any name related data, so we can do it here; | |
90 * needed for a double add of the same file name */ | |
91 _zip_unchange_data(za->entry+idx); | |
92 | |
93 if (za->entry[idx].orig != NULL && (za->entry[idx].changes == NULL || (za->entry[idx].changes->changed & ZIP_DIRENT_COMP_METHOD) == 0)) { | |
94 if (za->entry[idx].changes == NULL) { | |
95 if ((za->entry[idx].changes=_zip_dirent_clone(za->entry[idx].orig)) == NULL) { | |
96 zip_error_set(&za->error, ZIP_ER_MEMORY, 0); | |
97 return -1; | |
98 } | |
99 } | |
100 | |
101 za->entry[idx].changes->comp_method = ZIP_CM_REPLACED_DEFAULT; | |
102 za->entry[idx].changes->changed |= ZIP_DIRENT_COMP_METHOD; | |
103 } | |
104 | |
105 za->entry[idx].source = source; | |
106 | |
107 return (zip_int64_t)idx; | |
108 } |