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
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
|
/*
* Copyright (C) 2003-2014 The Music Player Daemon Project
* http://www.musicpd.org
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
/**
* zip archive handling (requires zziplib)
*/
#include "config.h"
#include "ZzipArchivePlugin.hxx"
#include "../ArchivePlugin.hxx"
#include "../ArchiveFile.hxx"
#include "../ArchiveVisitor.hxx"
#include "input/InputStream.hxx"
#include "input/InputPlugin.hxx"
#include "fs/Path.hxx"
#include "util/RefCount.hxx"
#include "util/Error.hxx"
#include "util/Domain.hxx"
#include <zzip/zzip.h>
class ZzipArchiveFile final : public ArchiveFile {
public:
RefCount ref;
ZZIP_DIR *const dir;
ZzipArchiveFile(ZZIP_DIR *_dir)
:ArchiveFile(zzip_archive_plugin), dir(_dir) {}
~ZzipArchiveFile() {
zzip_dir_close(dir);
}
void Unref() {
if (ref.Decrement())
delete this;
}
virtual void Close() override {
Unref();
}
virtual void Visit(ArchiveVisitor &visitor) override;
virtual InputStream *OpenStream(const char *path,
Mutex &mutex, Cond &cond,
Error &error) override;
};
static constexpr Domain zzip_domain("zzip");
/* archive open && listing routine */
static ArchiveFile *
zzip_archive_open(Path pathname, Error &error)
{
ZZIP_DIR *dir = zzip_dir_open(pathname.c_str(), nullptr);
if (dir == nullptr) {
error.Format(zzip_domain, "Failed to open ZIP file %s",
pathname.c_str());
return nullptr;
}
return new ZzipArchiveFile(dir);
}
inline void
ZzipArchiveFile::Visit(ArchiveVisitor &visitor)
{
zzip_rewinddir(dir);
ZZIP_DIRENT dirent;
while (zzip_dir_read(dir, &dirent))
//add only files
if (dirent.st_size > 0)
visitor.VisitArchiveEntry(dirent.d_name);
}
/* single archive handling */
struct ZzipInputStream final : public InputStream {
ZzipArchiveFile *archive;
ZZIP_FILE *file;
ZzipInputStream(ZzipArchiveFile &_archive, const char *_uri,
Mutex &_mutex, Cond &_cond,
ZZIP_FILE *_file)
:InputStream(_uri, _mutex, _cond),
archive(&_archive), file(_file) {
//we are seekable (but its not recommendent to do so)
seekable = true;
ZZIP_STAT z_stat;
zzip_file_stat(file, &z_stat);
size = z_stat.st_size;
SetReady();
archive->ref.Increment();
}
~ZzipInputStream() {
zzip_file_close(file);
archive->Unref();
}
/* virtual methods from InputStream */
bool IsEOF() override;
size_t Read(void *ptr, size_t size, Error &error) override;
bool Seek(offset_type offset, Error &error) override;
};
InputStream *
ZzipArchiveFile::OpenStream(const char *pathname,
Mutex &mutex, Cond &cond,
Error &error)
{
ZZIP_FILE *_file = zzip_file_open(dir, pathname, 0);
if (_file == nullptr) {
error.Format(zzip_domain, "not found in the ZIP file: %s",
pathname);
return nullptr;
}
return new ZzipInputStream(*this, pathname,
mutex, cond,
_file);
}
size_t
ZzipInputStream::Read(void *ptr, size_t read_size, Error &error)
{
int ret = zzip_file_read(file, ptr, read_size);
if (ret < 0) {
error.Set(zzip_domain, "zzip_file_read() has failed");
return 0;
}
offset = zzip_tell(file);
return ret;
}
bool
ZzipInputStream::IsEOF()
{
return (InputPlugin::offset_type)zzip_tell(file) == size;
}
bool
ZzipInputStream::Seek(offset_type new_offset, Error &error)
{
zzip_off_t ofs = zzip_seek(file, new_offset, SEEK_SET);
if (ofs != -1) {
error.Set(zzip_domain, "zzip_seek() has failed");
offset = ofs;
return true;
}
return false;
}
/* exported structures */
static const char *const zzip_archive_extensions[] = {
"zip",
nullptr
};
const ArchivePlugin zzip_archive_plugin = {
"zzip",
nullptr,
nullptr,
zzip_archive_open,
zzip_archive_extensions,
};
|
