Mercurial > code
comparison modules/zip/libzip/lib/zip_source_function.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_source_function.c -- create zip data source from 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 <stdlib.h> | |
36 | |
37 #include "zipint.h" | |
38 | |
39 | |
40 ZIP_EXTERN zip_source_t * | |
41 zip_source_function(zip_t *za, zip_source_callback zcb, void *ud) | |
42 { | |
43 if (za == NULL) { | |
44 return NULL; | |
45 } | |
46 | |
47 return zip_source_function_create(zcb, ud, &za->error); | |
48 } | |
49 | |
50 | |
51 ZIP_EXTERN zip_source_t * | |
52 zip_source_function_create(zip_source_callback zcb, void *ud, zip_error_t *error) | |
53 { | |
54 zip_source_t *zs; | |
55 | |
56 if ((zs=_zip_source_new(error)) == NULL) | |
57 return NULL; | |
58 | |
59 zs->cb.f = zcb; | |
60 zs->ud = ud; | |
61 | |
62 zs->supports = zcb(ud, NULL, 0, ZIP_SOURCE_SUPPORTS); | |
63 if (zs->supports < 0) { | |
64 zs->supports = ZIP_SOURCE_SUPPORTS_READABLE; | |
65 } | |
66 | |
67 return zs; | |
68 } | |
69 | |
70 | |
71 ZIP_EXTERN void | |
72 zip_source_keep(zip_source_t *src) | |
73 { | |
74 src->refcount++; | |
75 } | |
76 | |
77 | |
78 zip_source_t * | |
79 _zip_source_new(zip_error_t *error) | |
80 { | |
81 zip_source_t *src; | |
82 | |
83 if ((src=(zip_source_t *)malloc(sizeof(*src))) == NULL) { | |
84 zip_error_set(error, ZIP_ER_MEMORY, 0); | |
85 return NULL; | |
86 } | |
87 | |
88 src->src = NULL; | |
89 src->cb.f = NULL; | |
90 src->ud = NULL; | |
91 src->open_count = 0; | |
92 src->write_state = ZIP_SOURCE_WRITE_CLOSED; | |
93 src->source_closed = false; | |
94 src->source_archive = NULL; | |
95 src->refcount = 1; | |
96 zip_error_init(&src->error); | |
97 | |
98 return src; | |
99 } |