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
|
/*
* Copyright (C) 2003-2011 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.
*/
#include "config.h"
#include "tag_ape.h"
#include "tag.h"
#include "tag_table.h"
#include "tag_handler.h"
#include "ape.h"
static const struct tag_table ape_tags[] = {
{ "album artist", TAG_ALBUM_ARTIST },
{ "year", TAG_DATE },
{ NULL, TAG_NUM_OF_ITEM_TYPES }
};
static enum tag_type
tag_ape_name_parse(const char *name)
{
enum tag_type type = tag_table_lookup_i(ape_tags, name);
if (type == TAG_NUM_OF_ITEM_TYPES)
type = tag_name_parse_i(name);
return type;
}
/**
* @return true if the item was recognized
*/
static bool
tag_ape_import_item(unsigned long flags,
const char *key, const char *value, size_t value_length,
const struct tag_handler *handler, void *handler_ctx)
{
/* we only care about utf-8 text tags */
if ((flags & (0x3 << 1)) != 0)
return false;
tag_handler_invoke_pair(handler, handler_ctx, key, value);
enum tag_type type = tag_ape_name_parse(key);
if (type == TAG_NUM_OF_ITEM_TYPES)
return false;
bool recognized = false;
const char *end = value + value_length;
while (true) {
/* multiple values are separated by null bytes */
const char *n = memchr(value, 0, end - value);
if (n != NULL) {
if (n > value) {
tag_handler_invoke_tag(handler, handler_ctx,
type, value);
recognized = true;
}
value = n + 1;
} else {
char *p = g_strndup(value, end - value);
tag_handler_invoke_tag(handler, handler_ctx,
type, p);
g_free(p);
recognized = true;
break;
}
}
return recognized;
}
struct tag_ape_ctx {
const struct tag_handler *handler;
void *handler_ctx;
bool recognized;
};
static bool
tag_ape_callback(unsigned long flags, const char *key,
const char *value, size_t value_length, void *_ctx)
{
struct tag_ape_ctx *ctx = _ctx;
ctx->recognized |= tag_ape_import_item(flags, key, value, value_length,
ctx->handler, ctx->handler_ctx);
return true;
}
bool
tag_ape_scan2(const char *path_fs,
const struct tag_handler *handler, void *handler_ctx)
{
struct tag_ape_ctx ctx = {
.handler = handler,
.handler_ctx = handler_ctx,
.recognized = false,
};
return tag_ape_scan(path_fs, tag_ape_callback, &ctx) &&
ctx.recognized;
}
|
