/* * Copyright (C) 2003-2010 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 "check.h" #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