aboutsummaryrefslogtreecommitdiffstats
path: root/src/locate.c
blob: 85fe297a584f981111178c5f1871907eef4b9074 (plain) (blame)
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
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
/* the Music Player Daemon (MPD)
 * (c)2007 by Warren Dukes (warren.dukes@gmail.com)
 * This project's homepage is: 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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

#include "locate.h"
#include "path.h"
#include "tag.h"
#include "song.h"

#include <glib.h>

#include <stdlib.h>

#define LOCATE_TAG_FILE_KEY     "file"
#define LOCATE_TAG_FILE_KEY_OLD "filename"
#define LOCATE_TAG_ANY_KEY      "any"

int
locate_parse_type(const char *str)
{
	int i;

	if (0 == strcasecmp(str, LOCATE_TAG_FILE_KEY) ||
	    0 == strcasecmp(str, LOCATE_TAG_FILE_KEY_OLD))
		return LOCATE_TAG_FILE_TYPE;

	if (0 == strcasecmp(str, LOCATE_TAG_ANY_KEY))
		return LOCATE_TAG_ANY_TYPE;

	for (i = 0; i < TAG_NUM_OF_ITEM_TYPES; i++)
		if (0 == strcasecmp(str, mpdTagItemKeys[i]))
			return i;

	return -1;
}

static bool
locate_item_init(struct locate_item *item,
		 const char *type_string, const char *needle)
{
	item->tag = locate_parse_type(type_string);

	if (item->tag < 0)
		return false;

	item->needle = g_strdup(needle);

	return true;
}

struct locate_item *
locate_item_new(const char *type_string, const char *needle)
{
	struct locate_item *ret = g_new(struct locate_item, 1);

	if (!locate_item_init(ret, type_string, needle)) {
		free(ret);
		ret = NULL;
	}

	return ret;
}

void
locate_item_list_free(int count, struct locate_item *array)
{
	int i;

	for (i = 0; i < count; i++)
		free(array[i].needle);

	free(array);
}

int
locate_item_list_parse(char *argv[], int argc, struct locate_item **arrayRet)
{
	int i, j;
	struct locate_item *item;

	if (argc == 0)
		return 0;

	if (argc % 2 != 0)
		return -1;

	*arrayRet = g_new(struct locate_item, argc / 2);

	for (i = 0, item = *arrayRet; i < argc / 2; i++, item++) {
		if (!locate_item_init(item, argv[i * 2], argv[i * 2 + 1]))
			goto fail;
	}

	return argc / 2;

fail:
	for (j = 0; j < i; j++) {
		free((*arrayRet)[j].needle);
	}

	free(*arrayRet);
	*arrayRet = NULL;
	return -1;
}

void
locate_item_free(struct locate_item *item)
{
	free(item->needle);
	free(item);
}

static bool
locate_tag_search(const struct song *song, enum tag_type type, const char *str)
{
	int i;
	char *duplicate;
	bool ret = false;
	bool visited_types[TAG_NUM_OF_ITEM_TYPES] = { false };

	if (type == LOCATE_TAG_FILE_TYPE || type == LOCATE_TAG_ANY_TYPE) {
		char *uri, *p;

		uri = song_get_uri(song);
		p = g_utf8_casefold(uri, -1);
		g_free(uri);

		if (strstr(p, str))
			ret = true;
		g_free(p);
		if (ret == 1 || type == LOCATE_TAG_FILE_TYPE)
			return ret;
	}

	if (!song->tag)
		return false;

	for (i = 0; i < song->tag->numOfItems && !ret; i++) {
		visited_types[song->tag->items[i]->type] = true;
		if (type != LOCATE_TAG_ANY_TYPE &&
		    song->tag->items[i]->type != type) {
			continue;
		}

		duplicate = g_utf8_casefold(song->tag->items[i]->value, -1);
		if (*str && strstr(duplicate, str))
			ret = true;
		g_free(duplicate);
	}

	/** 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 (!*str && !visited_types[type])
		return true;

	return ret;
}

bool
locate_song_search(const struct song *song, int num_items,
		   const struct locate_item *items)
{
	for (int i = 0; i < num_items; i++)
		if (!locate_tag_search(song, items[i].tag, items[i].needle))
			return false;

	return true;
}

static bool
locate_tag_match(const struct song *song, enum tag_type type, const char *str)
{
	int i;
	bool visited_types[TAG_NUM_OF_ITEM_TYPES] = { false };

	if (type == LOCATE_TAG_FILE_TYPE || type == LOCATE_TAG_ANY_TYPE) {
		char *uri = song_get_uri(song);
		bool matches = strcmp(str, uri) == 0;
		g_free(uri);

		if (matches)
			return true;

		if (type == LOCATE_TAG_FILE_TYPE)
			return false;
	}

	if (!song->tag)
		return false;

	for (i = 0; i < song->tag->numOfItems; i++) {
		visited_types[song->tag->items[i]->type] = true;
		if (type != LOCATE_TAG_ANY_TYPE &&
		    song->tag->items[i]->type != type) {
			continue;
		}

		if (0 == strcmp(str, song->tag->items[i]->value))
			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 (!*str && !visited_types[type])
		return true;

	return false;
}

bool
locate_song_match(const struct song *song, int num_items,
		  const struct locate_item *items)
{
	for (int i = 0; i < num_items; i++)
		if (!locate_tag_match(song, items[i].tag, items[i].needle))
			return false;

	return true;
}