131 lines
3.3 KiB
C
131 lines
3.3 KiB
C
/*
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* Copyright (C) 2003-2009 The Music Player Daemon Project
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* http://www.musicpd.org
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#ifndef MPD_DIRECTORY_H
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#define MPD_DIRECTORY_H
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#include "dirvec.h"
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#include "songvec.h"
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#include <stdbool.h>
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#include <sys/types.h>
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#define DIRECTORY_DIR "directory: "
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#define DEVICE_INARCHIVE (unsigned)(-1)
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#define DEVICE_CONTAINER (unsigned)(-2)
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struct directory {
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struct dirvec children;
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struct songvec songs;
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struct directory *parent;
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time_t mtime;
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ino_t inode;
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dev_t device;
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unsigned stat; /* not needed if ino_t == dev_t == 0 is impossible */
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char path[sizeof(long)];
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};
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static inline bool
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isRootDirectory(const char *name)
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{
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return name[0] == 0 || (name[0] == '/' && name[1] == 0);
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}
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struct directory *
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directory_new(const char *dirname, struct directory *parent);
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void
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directory_free(struct directory *directory);
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static inline bool
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directory_is_empty(const struct directory *directory)
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{
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return directory->children.nr == 0 && directory->songs.nr == 0;
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}
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static inline const char *
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directory_get_path(const struct directory *directory)
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{
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return directory->path;
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}
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/**
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* Is this the root directory of the music database?
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*/
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static inline bool
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directory_is_root(const struct directory *directory)
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{
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return directory->parent == NULL;
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}
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/**
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* Returns the base name of the directory.
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*/
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const char *
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directory_get_name(const struct directory *directory);
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static inline struct directory *
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directory_get_child(const struct directory *directory, const char *name)
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{
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return dirvec_find(&directory->children, name);
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}
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static inline struct directory *
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directory_new_child(struct directory *directory, const char *name)
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{
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struct directory *subdir = directory_new(name, directory);
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dirvec_add(&directory->children, subdir);
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return subdir;
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}
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void
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directory_prune_empty(struct directory *directory);
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/**
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* Looks up a directory by its relative URI.
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*
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* @param directory the parent (or grandparent, ...) directory
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* @param uri the relative URI
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* @return the directory, or NULL if none was found
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*/
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struct directory *
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directory_lookup_directory(struct directory *directory, const char *uri);
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/**
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* Looks up a song by its relative URI.
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*
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* @param directory the parent (or grandparent, ...) directory
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* @param uri the relative URI
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* @return the song, or NULL if none was found
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*/
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struct song *
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directory_lookup_song(struct directory *directory, const char *uri);
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void
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directory_sort(struct directory *directory);
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int
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directory_walk(struct directory *directory,
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int (*forEachSong)(struct song *, void *),
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int (*forEachDir)(struct directory *, void *),
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void *data);
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#endif
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