mpd/src/dbUtils.c

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/* the Music Player Daemon (MPD)
* Copyright (C) 2003-2007 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 "dbUtils.h"
#include "locate.h"
#include "directory.h"
#include "database.h"
#include "client.h"
#include "playlist.h"
#include "song.h"
#include "song_print.h"
#include "tag.h"
#include "strset.h"
#include "log.h"
#include "stored_playlist.h"
#include <glib.h>
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#include <stdlib.h>
typedef struct _ListCommandItem {
int8_t tagType;
int numConditionals;
const struct locate_item *conditionals;
} ListCommandItem;
typedef struct _LocateTagItemArray {
int numItems;
const struct locate_item *items;
} LocateTagItemArray;
typedef struct _SearchStats {
LocateTagItemArray locateArray;
int numberOfSongs;
unsigned long playTime;
} SearchStats;
static int
printDirectoryInDirectory(struct directory *directory, void *data)
{
struct client *client = data;
if (!directory_is_root(directory))
client_printf(client, "directory: %s\n", directory_get_path(directory));
return 0;
}
static int
printSongInDirectory(struct song *song, G_GNUC_UNUSED void *data)
{
struct client *client = data;
song_print_url(client, song);
return 0;
}
struct search_data {
struct client *client;
LocateTagItemArray array;
};
static int
searchInDirectory(struct song *song, void *_data)
{
struct search_data *data = _data;
LocateTagItemArray *array = &data->array;
if (locate_song_search(song, array->numItems, array->items))
return song_print_info(data->client, song);
return 0;
}
int
searchForSongsIn(struct client *client, const char *name,
int numItems, const struct locate_item *items)
{
int ret;
int i;
struct locate_item_list *new_list;
struct search_data data;
new_list = locate_item_list_new(numItems);
for (i = 0; i < numItems; i++)
new_list->items[i].needle =
g_utf8_casefold(items[i].needle, -1);
data.client = client;
data.array.numItems = numItems;
data.array.items = new_list->items;
ret = db_walk(name, searchInDirectory, NULL, &data);
locate_item_list_free(new_list);
return ret;
}
static int
findInDirectory(struct song *song, void *_data)
{
struct search_data *data = _data;
LocateTagItemArray *array = &data->array;
if (locate_song_match(song, array->numItems, array->items))
return song_print_info(data->client, song);
return 0;
}
int
findSongsIn(struct client *client, const char *name,
int numItems, const struct locate_item *items)
{
struct search_data data;
data.client = client;
data.array.numItems = numItems;
data.array.items = items;
return db_walk(name, findInDirectory, NULL, &data);
}
static void printSearchStats(struct client *client, SearchStats *stats)
{
client_printf(client, "songs: %i\n", stats->numberOfSongs);
client_printf(client, "playtime: %li\n", stats->playTime);
}
static int
searchStatsInDirectory(struct song *song, void *data)
{
SearchStats *stats = data;
if (locate_song_match(song, stats->locateArray.numItems,
stats->locateArray.items)) {
stats->numberOfSongs++;
if (song->tag->time > 0)
stats->playTime += song->tag->time;
}
return 0;
}
int
searchStatsForSongsIn(struct client *client, const char *name,
int numItems, const struct locate_item *items)
{
SearchStats stats;
int ret;
stats.locateArray.numItems = numItems;
stats.locateArray.items = items;
stats.numberOfSongs = 0;
stats.playTime = 0;
ret = db_walk(name, searchStatsInDirectory, NULL, &stats);
if (ret == 0)
printSearchStats(client, &stats);
return ret;
}
int printAllIn(struct client *client, const char *name)
{
return db_walk(name, printSongInDirectory,
printDirectoryInDirectory, client);
}
static int
directoryAddSongToPlaylist(struct song *song, G_GNUC_UNUSED void *data)
{
return addSongToPlaylist(song, NULL);
}
struct add_data {
const char *path;
};
static int
directoryAddSongToStoredPlaylist(struct song *song, void *_data)
{
struct add_data *data = _data;
if (spl_append_song(data->path, song) != 0)
return -1;
return 0;
}
int addAllIn(const char *name)
{
return db_walk(name, directoryAddSongToPlaylist, NULL, NULL);
}
int addAllInToStoredPlaylist(const char *name, const char *utf8file)
{
struct add_data data = {
.path = utf8file,
};
return db_walk(name, directoryAddSongToStoredPlaylist, NULL, &data);
}
static int
directoryPrintSongInfo(struct song *song, void *data)
{
struct client *client = data;
song_print_info(client, song);
return 0;
}
int printInfoForAllIn(struct client *client, const char *name)
{
return db_walk(name, directoryPrintSongInfo,
printDirectoryInDirectory, client);
}
static ListCommandItem *
newListCommandItem(int tagType, int numConditionals,
const struct locate_item *conditionals)
{
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ListCommandItem *item = g_new(ListCommandItem, 1);
item->tagType = tagType;
item->numConditionals = numConditionals;
item->conditionals = conditionals;
return item;
}
static void freeListCommandItem(ListCommandItem * item)
{
free(item);
}
static void
visitTag(struct client *client, struct strset *set,
struct song *song, enum tag_type tagType)
{
int i;
struct tag *tag = song->tag;
if (tagType == LOCATE_TAG_FILE_TYPE) {
song_print_url(client, song);
return;
}
if (!tag)
return;
for (i = 0; i < tag->numOfItems; i++) {
if (tag->items[i]->type == tagType) {
strset_add(set, tag->items[i]->value);
return;
}
}
strset_add(set, "");
}
struct list_tags_data {
struct client *client;
ListCommandItem *item;
struct strset *set;
};
static int
listUniqueTagsInDirectory(struct song *song, void *_data)
{
struct list_tags_data *data = _data;
ListCommandItem *item = data->item;
if (locate_song_match(song, item->numConditionals,
item->conditionals)) {
visitTag(data->client, data->set, song, item->tagType);
}
return 0;
}
int listAllUniqueTags(struct client *client, int type, int numConditionals,
const struct locate_item *conditionals)
{
int ret;
ListCommandItem *item = newListCommandItem(type, numConditionals,
conditionals);
struct list_tags_data data = {
.client = client,
.item = item,
};
if (type >= 0 && type <= TAG_NUM_OF_ITEM_TYPES) {
data.set = strset_new();
}
ret = db_walk(NULL, listUniqueTagsInDirectory, NULL, &data);
if (type >= 0 && type <= TAG_NUM_OF_ITEM_TYPES) {
const char *value;
strset_rewind(data.set);
while ((value = strset_next(data.set)) != NULL)
client_printf(client, "%s: %s\n",
mpdTagItemKeys[type],
value);
strset_free(data.set);
}
freeListCommandItem(item);
return ret;
}
static int
sumSavedFilenameMemoryInDirectory(struct directory *dir, void *data)
{
int *sum = data;
if (directory_is_root(dir))
return 0;
*sum += (strlen(directory_get_path(dir)) + 1
- sizeof(struct directory *)) * dir->songs.nr;
return 0;
}
static int
sumSavedFilenameMemoryInSong(struct song *song, void *data)
{
int *sum = data;
*sum += strlen(song->url) + 1;
return 0;
}
void printSavedMemoryFromFilenames(void)
{
int sum = 0;
db_walk(NULL, sumSavedFilenameMemoryInSong,
sumSavedFilenameMemoryInDirectory, (void *)&sum);
DEBUG("saved memory from filenames: %i\n", sum);
}