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
|
/*
* 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 "dirvec.h"
#include "directory.h"
#include "db_lock.h"
#include <glib.h>
#include <assert.h>
#include <string.h>
#include <stdlib.h>
static size_t dv_size(const struct dirvec *dv)
{
return dv->nr * sizeof(struct directory *);
}
/* Only used for sorting/searching a dirvec, not general purpose compares */
static int dirvec_cmp(const void *d1, const void *d2)
{
const struct directory *a = ((const struct directory * const *)d1)[0];
const struct directory *b = ((const struct directory * const *)d2)[0];
return g_utf8_collate(a->path, b->path);
}
void dirvec_sort(struct dirvec *dv)
{
db_lock();
qsort(dv->base, dv->nr, sizeof(struct directory *), dirvec_cmp);
db_unlock();
}
struct directory *dirvec_find(const struct dirvec *dv, const char *path)
{
char *base;
int i;
struct directory *ret = NULL;
base = g_path_get_basename(path);
db_lock();
for (i = dv->nr; --i >= 0; )
if (!strcmp(directory_get_name(dv->base[i]), base)) {
ret = dv->base[i];
break;
}
db_unlock();
g_free(base);
return ret;
}
int dirvec_delete(struct dirvec *dv, struct directory *del)
{
size_t i;
db_lock();
for (i = 0; i < dv->nr; ++i) {
if (dv->base[i] != del)
continue;
/* we _don't_ call directory_free() here */
if (!--dv->nr) {
db_unlock();
g_free(dv->base);
dv->base = NULL;
return i;
} else {
memmove(&dv->base[i], &dv->base[i + 1],
(dv->nr - i) * sizeof(struct directory *));
dv->base = g_realloc(dv->base, dv_size(dv));
}
break;
}
db_unlock();
return i;
}
void dirvec_add(struct dirvec *dv, struct directory *add)
{
db_lock();
++dv->nr;
dv->base = g_realloc(dv->base, dv_size(dv));
dv->base[dv->nr - 1] = add;
db_unlock();
}
void dirvec_destroy(struct dirvec *dv)
{
db_lock();
dv->nr = 0;
db_unlock();
if (dv->base) {
g_free(dv->base);
dv->base = NULL;
}
}
int dirvec_for_each(const struct dirvec *dv,
int (*fn)(struct directory *, void *), void *arg)
{
size_t i;
size_t prev_nr;
db_lock();
for (i = 0; i < dv->nr; ) {
struct directory *dir = dv->base[i];
assert(dir);
prev_nr = dv->nr;
db_unlock();
if (fn(dir, arg) < 0)
return -1;
db_lock(); /* dv->nr may change in fn() */
if (prev_nr == dv->nr)
++i;
}
db_unlock();
return 0;
}
|