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/*
DeaDBeeF - ultimate music player for GNU/Linux systems with X11
Copyright (C) 2009-2011 Alexey Yakovenko <waker@users.sourceforge.net>
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 <string.h>
#include <stdlib.h>
#include "playlist.h"
#include "deadbeef.h"
#include "metacache.h"
#include "pltmeta.h"
#define LOCK {pl_lock();}
#define UNLOCK {pl_unlock();}
void
plt_add_meta (playlist_t *it, const char *key, const char *value) {
LOCK;
// check if it's already set
DB_metaInfo_t *tail = NULL;
DB_metaInfo_t *m = it->meta;
while (m) {
if (!strcasecmp (key, m->key)) {
// duplicate key
UNLOCK;
return;
}
tail = m;
m = m->next;
}
// add
char str[256];
if (!value || !*value) {
UNLOCK;
return;
}
m = malloc (sizeof (DB_metaInfo_t));
memset (m, 0, sizeof (DB_metaInfo_t));
m->key = metacache_add_string (key); //key;
m->value = metacache_add_string (value); //strdup (value);
if (tail) {
tail->next = m;
}
else {
it->meta = m;
}
UNLOCK;
}
void
plt_append_meta (playlist_t *it, const char *key, const char *value) {
const char *old = plt_find_meta (it, key);
size_t newlen = strlen (value);
if (!old) {
plt_add_meta (it, key, value);
}
else {
// check for duplicate data
const char *str = old;
int len;
while (str) {
char *next = strchr (str, '\n');
if (next) {
len = next - str;
next++;
}
else {
len = strlen (str);
}
if (len == newlen && !memcmp (str, value, len)) {
return;
}
str = next;
}
int sz = strlen (old) + newlen + 2;
char out[sz];
snprintf (out, sz, "%s\n%s", old, value);
plt_replace_meta (it, key, out);
}
}
void
plt_replace_meta (playlist_t *it, const char *key, const char *value) {
LOCK;
// check if it's already set
DB_metaInfo_t *m = it->meta;
while (m) {
if (!strcasecmp (key, m->key)) {
break;
}
m = m->next;
}
if (m) {
metacache_remove_string (m->value);
m->value = metacache_add_string (value);
UNLOCK;
return;
}
else {
plt_add_meta (it, key, value);
}
UNLOCK;
}
void
plt_set_meta_int (playlist_t *it, const char *key, int value) {
char s[20];
snprintf (s, sizeof (s), "%d", value);
plt_replace_meta (it, key, s);
}
void
plt_set_meta_float (playlist_t *it, const char *key, float value) {
char s[20];
snprintf (s, sizeof (s), "%f", value);
plt_replace_meta (it, key, s);
}
void
plt_delete_meta (playlist_t *it, const char *key) {
DB_metaInfo_t *prev = NULL;
DB_metaInfo_t *m = it->meta;
while (m) {
if (!strcasecmp (key, m->key)) {
if (prev) {
prev->next = m->next;
}
else {
it->meta = m->next;
}
metacache_remove_string (m->key);
metacache_remove_string (m->value);
free (m);
break;
}
prev = m;
m = m->next;
}
}
const char *
plt_find_meta (playlist_t *it, const char *key) {
DB_metaInfo_t *m = it->meta;
while (m) {
if (!strcasecmp (key, m->key)) {
return m->value;
}
m = m->next;
}
return NULL;
}
int
plt_find_meta_int (playlist_t *it, const char *key, int def) {
const char *val = plt_find_meta (it, key);
return val ? atoi (val) : def;
}
float
plt_find_meta_float (playlist_t *it, const char *key, float def) {
const char *val = plt_find_meta (it, key);
return val ? atof (val) : def;
}
DB_metaInfo_t *
plt_get_metadata_head (playlist_t *it) {
return it->meta;
}
void
plt_delete_metadata (playlist_t *it, DB_metaInfo_t *meta) {
DB_metaInfo_t *prev = NULL;
DB_metaInfo_t *m = it->meta;
while (m) {
if (m == meta) {
if (prev) {
prev->next = m->next;
}
else {
it->meta = m->next;
}
metacache_remove_string (m->key);
metacache_remove_string (m->value);
free (m);
break;
}
prev = m;
m = m->next;
}
}
void
plt_delete_all_meta (playlist_t *it) {
LOCK;
DB_metaInfo_t *m = it->meta;
DB_metaInfo_t *prev = NULL;
while (m) {
DB_metaInfo_t *next = m->next;
if (m->key[0] == ':') {
prev = m;
}
else {
if (prev) {
prev->next = next;
}
else {
it->meta = next;
}
metacache_remove_string (m->key);
metacache_remove_string (m->value);
free (m);
}
m = next;
}
UNLOCK;
}
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