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-rw-r--r--src/Directory.cxx330
1 files changed, 330 insertions, 0 deletions
diff --git a/src/Directory.cxx b/src/Directory.cxx
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index 000000000..eeba903d1
--- /dev/null
+++ b/src/Directory.cxx
@@ -0,0 +1,330 @@
+/*
+ * 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
+ * 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.
+ */
+
+#include "config.h"
+#include "directory.h"
+#include "SongFilter.hxx"
+
+extern "C" {
+#include "song.h"
+#include "song_sort.h"
+#include "playlist_vector.h"
+#include "path.h"
+#include "util/list_sort.h"
+#include "db_lock.h"
+}
+
+#include <glib.h>
+
+#include <assert.h>
+#include <string.h>
+#include <stdlib.h>
+
+static directory *
+directory_allocate(const char *path)
+{
+ assert(path != NULL);
+
+ const size_t path_size = strlen(path) + 1;
+ directory *directory =
+ (struct directory *)g_malloc0(sizeof(*directory)
+ - sizeof(directory->path)
+ + path_size);
+ INIT_LIST_HEAD(&directory->children);
+ INIT_LIST_HEAD(&directory->songs);
+ INIT_LIST_HEAD(&directory->playlists);
+
+ memcpy(directory->path, path, path_size);
+
+ return directory;
+}
+
+struct directory *
+directory_new(const char *path, struct directory *parent)
+{
+ assert(path != NULL);
+ assert((*path == 0) == (parent == NULL));
+
+ directory *directory = directory_allocate(path);
+
+ directory->parent = parent;
+
+ return directory;
+}
+
+void
+directory_free(struct directory *directory)
+{
+ playlist_vector_deinit(&directory->playlists);
+
+ struct song *song, *ns;
+ directory_for_each_song_safe(song, ns, directory)
+ song_free(song);
+
+ struct directory *child, *n;
+ directory_for_each_child_safe(child, n, directory)
+ directory_free(child);
+
+ g_free(directory);
+ /* this resets last dir returned */
+ /*directory_get_path(NULL); */
+}
+
+void
+directory_delete(struct directory *directory)
+{
+ assert(holding_db_lock());
+ assert(directory != NULL);
+ assert(directory->parent != NULL);
+
+ list_del(&directory->siblings);
+ directory_free(directory);
+}
+
+const char *
+directory_get_name(const struct directory *directory)
+{
+ assert(!directory_is_root(directory));
+ assert(directory->path != NULL);
+
+ const char *slash = strrchr(directory->path, '/');
+ assert((slash == NULL) == directory_is_root(directory->parent));
+
+ return slash != NULL
+ ? slash + 1
+ : directory->path;
+}
+
+struct directory *
+directory_new_child(struct directory *parent, const char *name_utf8)
+{
+ assert(holding_db_lock());
+ assert(parent != NULL);
+ assert(name_utf8 != NULL);
+ assert(*name_utf8 != 0);
+
+ char *allocated;
+ const char *path_utf8;
+ if (directory_is_root(parent)) {
+ allocated = NULL;
+ path_utf8 = name_utf8;
+ } else {
+ allocated = g_strconcat(directory_get_path(parent),
+ "/", name_utf8, NULL);
+ path_utf8 = allocated;
+ }
+
+ struct directory *directory = directory_new(path_utf8, parent);
+ g_free(allocated);
+
+ list_add_tail(&directory->siblings, &parent->children);
+ return directory;
+}
+
+struct directory *
+directory_get_child(const struct directory *directory, const char *name)
+{
+ assert(holding_db_lock());
+
+ struct directory *child;
+ directory_for_each_child(child, directory)
+ if (strcmp(directory_get_name(child), name) == 0)
+ return child;
+
+ return NULL;
+}
+
+void
+directory_prune_empty(struct directory *directory)
+{
+ assert(holding_db_lock());
+
+ struct directory *child, *n;
+ directory_for_each_child_safe(child, n, directory) {
+ directory_prune_empty(child);
+
+ if (directory_is_empty(child))
+ directory_delete(child);
+ }
+}
+
+struct directory *
+directory_lookup_directory(struct directory *directory, const char *uri)
+{
+ assert(holding_db_lock());
+ assert(uri != NULL);
+
+ if (isRootDirectory(uri))
+ return directory;
+
+ char *duplicated = g_strdup(uri), *name = duplicated;
+
+ while (1) {
+ char *slash = strchr(name, '/');
+ if (slash == name) {
+ directory = NULL;
+ break;
+ }
+
+ if (slash != NULL)
+ *slash = '\0';
+
+ directory = directory_get_child(directory, name);
+ if (directory == NULL || slash == NULL)
+ break;
+
+ name = slash + 1;
+ }
+
+ g_free(duplicated);
+
+ return directory;
+}
+
+void
+directory_add_song(struct directory *directory, struct song *song)
+{
+ assert(holding_db_lock());
+ assert(directory != NULL);
+ assert(song != NULL);
+ assert(song->parent == directory);
+
+ list_add_tail(&song->siblings, &directory->songs);
+}
+
+void
+directory_remove_song(G_GNUC_UNUSED struct directory *directory,
+ struct song *song)
+{
+ assert(holding_db_lock());
+ assert(directory != NULL);
+ assert(song != NULL);
+ assert(song->parent == directory);
+
+ list_del(&song->siblings);
+}
+
+struct song *
+directory_get_song(const struct directory *directory, const char *name_utf8)
+{
+ assert(holding_db_lock());
+ assert(directory != NULL);
+ assert(name_utf8 != NULL);
+
+ struct song *song;
+ directory_for_each_song(song, directory) {
+ assert(song->parent == directory);
+
+ if (strcmp(song->uri, name_utf8) == 0)
+ return song;
+ }
+
+ return NULL;
+}
+
+struct song *
+directory_lookup_song(struct directory *directory, const char *uri)
+{
+ char *duplicated, *base;
+
+ assert(holding_db_lock());
+ assert(directory != NULL);
+ assert(uri != NULL);
+
+ duplicated = g_strdup(uri);
+ base = strrchr(duplicated, '/');
+
+ if (base != NULL) {
+ *base++ = 0;
+ directory = directory_lookup_directory(directory, duplicated);
+ if (directory == NULL) {
+ g_free(duplicated);
+ return NULL;
+ }
+ } else
+ base = duplicated;
+
+ struct song *song = directory_get_song(directory, base);
+ assert(song == NULL || song->parent == directory);
+
+ g_free(duplicated);
+ return song;
+
+}
+
+static int
+directory_cmp(G_GNUC_UNUSED void *priv,
+ struct list_head *_a, struct list_head *_b)
+{
+ const struct directory *a = (const struct directory *)_a;
+ const struct directory *b = (const struct directory *)_b;
+ return g_utf8_collate(a->path, b->path);
+}
+
+void
+directory_sort(struct directory *directory)
+{
+ assert(holding_db_lock());
+
+ list_sort(NULL, &directory->children, directory_cmp);
+ song_list_sort(&directory->songs);
+
+ struct directory *child;
+ directory_for_each_child(child, directory)
+ directory_sort(child);
+}
+
+bool
+directory::Walk(bool recursive, const SongFilter *filter,
+ VisitDirectory visit_directory, VisitSong visit_song,
+ VisitPlaylist visit_playlist,
+ GError **error_r) const
+{
+ assert(error_r == NULL || *error_r == NULL);
+
+ if (visit_song) {
+ struct song *song;
+ directory_for_each_song(song, this)
+ if ((filter == nullptr || filter->Match(*song)) &&
+ !visit_song(*song, error_r))
+ return false;
+ }
+
+ if (visit_playlist) {
+ struct playlist_metadata *i;
+ directory_for_each_playlist(i, this)
+ if (!visit_playlist(*i, *this, error_r))
+ return false;
+ }
+
+ struct directory *child;
+ directory_for_each_child(child, this) {
+ if (visit_directory &&
+ !visit_directory(*child, error_r))
+ return false;
+
+ if (recursive &&
+ !child->Walk(recursive, filter,
+ visit_directory, visit_song, visit_playlist,
+ error_r))
+ return false;
+ }
+
+ return true;
+}