diff options
Diffstat (limited to 'src/directory.h')
| -rw-r--r-- | src/directory.h | 163 |
1 files changed, 143 insertions, 20 deletions
diff --git a/src/directory.h b/src/directory.h index 9c0a9b567..769260436 100644 --- a/src/directory.h +++ b/src/directory.h @@ -1,5 +1,5 @@ /* - * Copyright (C) 2003-2010 The Music Player Daemon Project + * Copyright (C) 2003-2011 The Music Player Daemon Project * http://www.musicpd.org * * This program is free software; you can redistribute it and/or modify @@ -21,10 +21,10 @@ #define MPD_DIRECTORY_H #include "check.h" -#include "dirvec.h" -#include "songvec.h" +#include "util/list.h" #include "playlist_vector.h" +#include <glib.h> #include <stdbool.h> #include <sys/types.h> @@ -33,9 +33,47 @@ #define DEVICE_INARCHIVE (dev_t)(-1) #define DEVICE_CONTAINER (dev_t)(-2) +#define directory_for_each_child(pos, directory) \ + list_for_each_entry(pos, &directory->children, siblings) + +#define directory_for_each_child_safe(pos, n, directory) \ + list_for_each_entry_safe(pos, n, &directory->children, siblings) + +#define directory_for_each_song(pos, directory) \ + list_for_each_entry(pos, &directory->songs, siblings) + +#define directory_for_each_song_safe(pos, n, directory) \ + list_for_each_entry_safe(pos, n, &directory->songs, siblings) + +struct song; +struct db_visitor; + struct directory { - struct dirvec children; - struct songvec songs; + /** + * Pointers to the siblings of this directory within the + * parent directory. It is unused (undefined) in the root + * directory. + * + * This attribute is protected with the global #db_mutex. + * Read access in the update thread does not need protection. + */ + struct list_head siblings; + + /** + * A doubly linked list of child directories. + * + * This attribute is protected with the global #db_mutex. + * Read access in the update thread does not need protection. + */ + struct list_head children; + + /** + * A doubly linked list of songs within this directory. + * + * This attribute is protected with the global #db_mutex. + * Read access in the update thread does not need protection. + */ + struct list_head songs; struct playlist_vector playlists; @@ -53,16 +91,44 @@ isRootDirectory(const char *name) return name[0] == 0 || (name[0] == '/' && name[1] == 0); } +/** + * Generic constructor for #directory object. + */ +G_GNUC_MALLOC struct directory * directory_new(const char *dirname, struct directory *parent); +/** + * Create a new root #directory object. + */ +G_GNUC_MALLOC +static inline struct directory * +directory_new_root(void) +{ + return directory_new("", NULL); +} + +/** + * Free this #directory object (and the whole object tree within it), + * assuming it was already removed from the parent. + */ void directory_free(struct directory *directory); +/** + * Remove this #directory object from its parent and free it. This + * must not be called with the root directory. + * + * Caller must lock the #db_mutex. + */ +void +directory_delete(struct directory *directory); + static inline bool directory_is_empty(const struct directory *directory) { - return directory->children.nr == 0 && directory->songs.nr == 0 && + return list_empty(&directory->children) && + list_empty(&directory->songs) && playlist_vector_is_empty(&directory->playlists); } @@ -84,23 +150,47 @@ directory_is_root(const struct directory *directory) /** * Returns the base name of the directory. */ +G_GNUC_PURE 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); -} +/** + * Caller must lock the #db_mutex. + */ +G_GNUC_PURE +struct directory * +directory_get_child(const struct directory *directory, const char *name); + +/** + * Create a new #directory object as a child of the given one. + * + * Caller must lock the #db_mutex. + * + * @param parent the parent directory the new one will be added to + * @param name_utf8 the UTF-8 encoded name of the new sub directory + */ +G_GNUC_MALLOC +struct directory * +directory_new_child(struct directory *parent, const char *name_utf8); +/** + * Look up a sub directory, and create the object if it does not + * exist. + * + * Caller must lock the #db_mutex. + */ static inline struct directory * -directory_new_child(struct directory *directory, const char *name) +directory_make_child(struct directory *directory, const char *name_utf8) { - struct directory *subdir = directory_new(name, directory); - dirvec_add(&directory->children, subdir); - return subdir; + struct directory *child = directory_get_child(directory, name_utf8); + if (child == NULL) + child = directory_new_child(directory, name_utf8); + return child; } +/** + * Caller must lock the #db_mutex. + */ void directory_prune_empty(struct directory *directory); @@ -115,8 +205,34 @@ struct directory * directory_lookup_directory(struct directory *directory, const char *uri); /** + * Add a song object to this directory. Its "parent" attribute must + * be set already. + */ +void +directory_add_song(struct directory *directory, struct song *song); + +/** + * Remove a song object from this directory (which effectively + * invalidates the song object, because the "parent" attribute becomes + * stale), but does not free it. + */ +void +directory_remove_song(struct directory *directory, struct song *song); + +/** + * Look up a song in this directory by its name. + * + * Caller must lock the #db_mutex. + */ +G_GNUC_PURE +struct song * +directory_get_song(const struct directory *directory, const char *name_utf8); + +/** * Looks up a song by its relative URI. * + * Caller must lock the #db_mutex. + * * @param directory the parent (or grandparent, ...) directory * @param uri the relative URI * @return the song, or NULL if none was found @@ -124,13 +240,20 @@ directory_lookup_directory(struct directory *directory, const char *uri); struct song * directory_lookup_song(struct directory *directory, const char *uri); +/** + * Sort all directory entries recursively. + * + * Caller must lock the #db_mutex. + */ void directory_sort(struct directory *directory); -int -directory_walk(struct directory *directory, - int (*forEachSong)(struct song *, void *), - int (*forEachDir)(struct directory *, void *), - void *data); +/** + * Caller must lock #db_mutex. + */ +bool +directory_walk(const struct directory *directory, bool recursive, + const struct db_visitor *visitor, void *ctx, + GError **error_r); #endif |