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/*
* Copyright (C) 2003-2009 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.
*/
#ifndef MPD_DIRECTORY_H
#define MPD_DIRECTORY_H
#include "config.h" /* must be first for large file support */
#include "dirvec.h"
#include "songvec.h"
#include <stdbool.h>
#include <sys/types.h>
#define DIRECTORY_DIR "directory: "
#define DEVICE_INARCHIVE (unsigned)(-1)
#define DEVICE_CONTAINER (unsigned)(-2)
struct directory {
struct dirvec children;
struct songvec songs;
struct directory *parent;
time_t mtime;
ino_t inode;
dev_t device;
unsigned stat; /* not needed if ino_t == dev_t == 0 is impossible */
char path[sizeof(long)];
};
static inline bool
isRootDirectory(const char *name)
{
return name[0] == 0 || (name[0] == '/' && name[1] == 0);
}
struct directory *
directory_new(const char *dirname, struct directory *parent);
void
directory_free(struct directory *directory);
static inline bool
directory_is_empty(const struct directory *directory)
{
return directory->children.nr == 0 && directory->songs.nr == 0;
}
static inline const char *
directory_get_path(const struct directory *directory)
{
return directory->path;
}
/**
* Is this the root directory of the music database?
*/
static inline bool
directory_is_root(const struct directory *directory)
{
return directory->parent == NULL;
}
/**
* Returns the base name of the directory.
*/
const char *
directory_get_name(const struct directory *directory);
static inline struct directory *
directory_get_child(const struct directory *directory, const char *name)
{
return dirvec_find(&directory->children, name);
}
static inline struct directory *
directory_new_child(struct directory *directory, const char *name)
{
struct directory *subdir = directory_new(name, directory);
dirvec_add(&directory->children, subdir);
return subdir;
}
void
directory_prune_empty(struct directory *directory);
/**
* Looks up a directory by its relative URI.
*
* @param directory the parent (or grandparent, ...) directory
* @param uri the relative URI
* @return the directory, or NULL if none was found
*/
struct directory *
directory_lookup_directory(struct directory *directory, const char *uri);
/**
* Looks up a song by its relative URI.
*
* @param directory the parent (or grandparent, ...) directory
* @param uri the relative URI
* @return the song, or NULL if none was found
*/
struct song *
directory_lookup_song(struct directory *directory, const char *uri);
void
directory_sort(struct directory *directory);
int
directory_walk(struct directory *directory,
int (*forEachSong)(struct song *, void *),
int (*forEachDir)(struct directory *, void *),
void *data);
#endif
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