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
|
/*
* Copyright (C) 2003-2012 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 "SongFilter.hxx"
#include "song.h"
#include "tag.h"
#include <glib.h>
#include <assert.h>
#include <stdlib.h>
#define LOCATE_TAG_FILE_KEY "file"
#define LOCATE_TAG_FILE_KEY_OLD "filename"
#define LOCATE_TAG_ANY_KEY "any"
unsigned
locate_parse_type(const char *str)
{
if (0 == g_ascii_strcasecmp(str, LOCATE_TAG_FILE_KEY) ||
0 == g_ascii_strcasecmp(str, LOCATE_TAG_FILE_KEY_OLD))
return LOCATE_TAG_FILE_TYPE;
if (0 == g_ascii_strcasecmp(str, LOCATE_TAG_ANY_KEY))
return LOCATE_TAG_ANY_TYPE;
return tag_name_parse_i(str);
}
SongFilter::Item::Item(unsigned _tag, const char *_value, bool _fold_case)
:tag(_tag), fold_case(_fold_case),
value(fold_case
? g_utf8_casefold(_value, -1)
: g_strdup(_value))
{
}
SongFilter::Item::~Item()
{
g_free(value);
}
bool
SongFilter::Item::StringMatch(const char *s) const
{
assert(value != nullptr);
assert(s != nullptr);
if (fold_case) {
char *p = g_utf8_casefold(s, -1);
const bool result = strstr(p, value) != NULL;
g_free(p);
return result;
} else {
return strcmp(s, value) == 0;
}
}
bool
SongFilter::Item::Match(const tag_item &item) const
{
return (tag == LOCATE_TAG_ANY_TYPE || (unsigned)item.type == tag) &&
StringMatch(item.value);
}
bool
SongFilter::Item::Match(const struct tag &_tag) const
{
bool visited_types[TAG_NUM_OF_ITEM_TYPES];
std::fill(visited_types, visited_types + TAG_NUM_OF_ITEM_TYPES, false);
for (unsigned i = 0; i < _tag.num_items; i++) {
visited_types[_tag.items[i]->type] = true;
if (Match(*_tag.items[i]))
return true;
}
/** If the search critieron was not visited during the sweep
* through the song's tag, it means this field is absent from
* the tag or empty. Thus, if the searched string is also
* empty (first char is a \0), then it's a match as well and
* we should return true.
*/
if (*value == 0 && tag < TAG_NUM_OF_ITEM_TYPES &&
!visited_types[tag])
return true;
return false;
}
bool
SongFilter::Item::Match(const song &song) const
{
if (tag == LOCATE_TAG_FILE_TYPE || tag == LOCATE_TAG_ANY_TYPE) {
char *uri = song_get_uri(&song);
const bool result = StringMatch(uri);
g_free(uri);
if (result || tag == LOCATE_TAG_FILE_TYPE)
return result;
}
return song.tag != NULL && Match(*song.tag);
}
SongFilter::SongFilter(unsigned tag, const char *value, bool fold_case)
{
items.push_back(Item(tag, value, fold_case));
}
SongFilter::~SongFilter()
{
/* this destructor exists here just so it won't get inlined */
}
bool
SongFilter::Parse(const char *tag_string, const char *value, bool fold_case)
{
unsigned tag = locate_parse_type(tag_string);
if (tag == TAG_NUM_OF_ITEM_TYPES)
return false;
items.push_back(Item(tag, value, fold_case));
return true;
}
bool
SongFilter::Parse(unsigned argc, char *argv[], bool fold_case)
{
if (argc == 0 || argc % 2 != 0)
return false;
for (unsigned i = 0; i < argc; i += 2)
if (!Parse(argv[i], argv[i + 1], fold_case))
return false;
return true;
}
bool
SongFilter::Match(const song &song) const
{
for (const auto &i : items)
if (!i.Match(song))
return false;
return true;
}
|
