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# src/directory.h

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    00001 /*
    00002  * Copyright (C) 2003-2010 The Music Player Daemon Project
    00003  * http://www.musicpd.org
    00004  *
    00005  * This program is free software; you can redistribute it and/or modify
    00006  * it under the terms of the GNU General Public License as published by
    00007  * the Free Software Foundation; either version 2 of the License, or
    00008  * (at your option) any later version.
    00009  *
    00010  * This program is distributed in the hope that it will be useful,
    00011  * but WITHOUT ANY WARRANTY; without even the implied warranty of
    00012  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    00013  * GNU General Public License for more details.
    00014  *
    00015  * You should have received a copy of the GNU General Public License along
    00016  * with this program; if not, write to the Free Software Foundation, Inc.,
    00017  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
    00018  */
    00019
    00020 #ifndef MPD_DIRECTORY_H
    00021 #define MPD_DIRECTORY_H
    00022
    00023 #include "check.h"
    00024 #include "dirvec.h"
    00025 #include "songvec.h"
    00026 #include "playlist_vector.h"
    00027
    00028 #include <stdbool.h>
    00029 #include <sys/types.h>
    00030
    00031 #define DIRECTORY_DIR           "directory: "
    00032
    00033 #define DEVICE_INARCHIVE (dev_t)(-1)
    00034 #define DEVICE_CONTAINER (dev_t)(-2)
    00035
    00036 struct directory {
    00037         struct dirvec children;
    00038         struct songvec songs;
    00039
    00040         struct playlist_vector playlists;
    00041
    00042         struct directory *parent;
    00043         time_t mtime;
    00044         ino_t inode;
    00045         dev_t device;
    00046         unsigned stat; /* not needed if ino_t == dev_t == 0 is impossible */
    00047         char path[sizeof(long)];
    00048 };
    00049
    00050 static inline bool
    00051 isRootDirectory(const char *name)
    00052 {
    00053         return name[0] == 0 || (name[0] == '/' && name[1] == 0);
    00054 }
    00055
    00056 struct directory *
    00057 directory_new(const char *dirname, struct directory *parent);
    00058
    00059 void
    00060 directory_free(struct directory *directory);
    00061
    00062 static inline bool
    00063 directory_is_empty(const struct directory *directory)
    00064 {
    00065         return directory->children.nr == 0 && directory->songs.nr == 0;
    00066 }
    00067
    00068 static inline const char *
    00069 directory_get_path(const struct directory *directory)
    00070 {
    00071         return directory->path;
    00072 }
    00073
    00077 static inline bool
    00078 directory_is_root(const struct directory *directory)
    00079 {
    00080         return directory->parent == NULL;
    00081 }
    00082
    00086 const char *
    00087 directory_get_name(const struct directory *directory);
    00088
    00089 static inline struct directory *
    00090 directory_get_child(const struct directory *directory, const char *name)
    00091 {
    00092         return dirvec_find(&directory->children, name);
    00093 }
    00094
    00095 static inline struct directory *
    00096 directory_new_child(struct directory *directory, const char *name)
    00097 {
    00098         struct directory *subdir = directory_new(name, directory);
    00099         dirvec_add(&directory->children, subdir);
    00100         return subdir;
    00101 }
    00102
    00103 void
    00104 directory_prune_empty(struct directory *directory);
    00105
    00113 struct directory *
    00114 directory_lookup_directory(struct directory *directory, const char *uri);
    00115
    00123 struct song *
    00124 directory_lookup_song(struct directory *directory, const char *uri);
    00125
    00126 void
    00127 directory_sort(struct directory *directory);
    00128
    00129 int
    00130 directory_walk(struct directory *directory,
    00131                int (*forEachSong)(struct song *, void *),
    00132                int (*forEachDir)(struct directory *, void *),
    00133                void *data);
    00134
    00135 #endif