1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
|
/*************************************************************************/
/* zip_io.cpp */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2019 Juan Linietsky, Ariel Manzur. */
/* Copyright (c) 2014-2019 Godot Engine contributors (cf. AUTHORS.md) */
/* */
/* Permission is hereby granted, free of charge, to any person obtaining */
/* a copy of this software and associated documentation files (the */
/* "Software"), to deal in the Software without restriction, including */
/* without limitation the rights to use, copy, modify, merge, publish, */
/* distribute, sublicense, and/or sell copies of the Software, and to */
/* permit persons to whom the Software is furnished to do so, subject to */
/* the following conditions: */
/* */
/* The above copyright notice and this permission notice shall be */
/* included in all copies or substantial portions of the Software. */
/* */
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
/*************************************************************************/
#include "zip_io.h"
#include "core/os/copymem.h"
void *zipio_open(void *data, const char *p_fname, int mode) {
FileAccess *&f = *(FileAccess **)data;
String fname;
fname.parse_utf8(p_fname);
if (mode & ZLIB_FILEFUNC_MODE_WRITE) {
f = FileAccess::open(fname, FileAccess::WRITE);
} else {
f = FileAccess::open(fname, FileAccess::READ);
}
if (!f)
return NULL;
return data;
}
uLong zipio_read(void *data, void *fdata, void *buf, uLong size) {
FileAccess *f = *(FileAccess **)data;
return f->get_buffer((uint8_t *)buf, size);
}
uLong zipio_write(voidpf opaque, voidpf stream, const void *buf, uLong size) {
FileAccess *f = *(FileAccess **)opaque;
f->store_buffer((uint8_t *)buf, size);
return size;
}
long zipio_tell(voidpf opaque, voidpf stream) {
FileAccess *f = *(FileAccess **)opaque;
return f->get_position();
}
long zipio_seek(voidpf opaque, voidpf stream, uLong offset, int origin) {
FileAccess *f = *(FileAccess **)opaque;
int pos = offset;
switch (origin) {
case ZLIB_FILEFUNC_SEEK_CUR:
pos = f->get_position() + offset;
break;
case ZLIB_FILEFUNC_SEEK_END:
pos = f->get_len() + offset;
break;
default:
break;
};
f->seek(pos);
return 0;
}
int zipio_close(voidpf opaque, voidpf stream) {
FileAccess *&f = *(FileAccess **)opaque;
if (f) {
f->close();
f = NULL;
}
return 0;
}
int zipio_testerror(voidpf opaque, voidpf stream) {
FileAccess *f = *(FileAccess **)opaque;
return (f && f->get_error() != OK) ? 1 : 0;
}
voidpf zipio_alloc(voidpf opaque, uInt items, uInt size) {
voidpf ptr = memalloc(items * size);
zeromem(ptr, items * size);
return ptr;
}
void zipio_free(voidpf opaque, voidpf address) {
memfree(address);
}
zlib_filefunc_def zipio_create_io_from_file(FileAccess **p_file) {
zlib_filefunc_def io;
io.opaque = p_file;
io.zopen_file = zipio_open;
io.zread_file = zipio_read;
io.zwrite_file = zipio_write;
io.ztell_file = zipio_tell;
io.zseek_file = zipio_seek;
io.zclose_file = zipio_close;
io.zerror_file = zipio_testerror;
io.alloc_mem = zipio_alloc;
io.free_mem = zipio_free;
return io;
}
|