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-rw-r--r--src/database.c32
-rw-r--r--src/database.h7
-rw-r--r--src/db/simple_db_plugin.c41
-rw-r--r--src/db_plugin.h24
-rw-r--r--src/db_selection.h56
-rw-r--r--src/directory.c7
-rw-r--r--src/directory.h2
7 files changed, 147 insertions, 22 deletions
diff --git a/src/database.c b/src/database.c
index e3fa7442b..9c4d90a2b 100644
--- a/src/database.c
+++ b/src/database.c
@@ -21,6 +21,7 @@
#include "database.h"
#include "db_error.h"
#include "db_save.h"
+#include "db_selection.h"
#include "db_visitor.h"
#include "db_plugin.h"
#include "db/simple_db_plugin.h"
@@ -108,9 +109,9 @@ db_get_song(const char *file)
}
bool
-db_walk(const char *uri,
- const struct db_visitor *visitor, void *ctx,
- GError **error_r)
+db_visit(const struct db_selection *selection,
+ const struct db_visitor *visitor, void *ctx,
+ GError **error_r)
{
if (db == NULL) {
g_set_error_literal(error_r, db_quark(), DB_DISABLED,
@@ -118,23 +119,18 @@ db_walk(const char *uri,
return false;
}
- struct directory *directory = db_get_directory(uri);
- if (directory == NULL) {
- struct song *song;
- if (visitor->song != NULL &&
- (song = db_get_song(uri)) != NULL)
- return visitor->song(song, ctx, error_r);
-
- g_set_error(error_r, db_quark(), DB_NOT_FOUND,
- "No such directory: %s", uri);
- return false;
- }
+ return db_plugin_visit(db, selection, visitor, ctx, error_r);
+}
- if (visitor->directory != NULL &&
- !visitor->directory(directory, ctx, error_r))
- return false;
+bool
+db_walk(const char *uri,
+ const struct db_visitor *visitor, void *ctx,
+ GError **error_r)
+{
+ struct db_selection selection;
+ db_selection_init(&selection, uri, true);
- return directory_walk(directory, visitor, ctx, error_r);
+ return db_visit(&selection, visitor, ctx, error_r);
}
bool
diff --git a/src/database.h b/src/database.h
index 1696031d0..33f503652 100644
--- a/src/database.h
+++ b/src/database.h
@@ -29,6 +29,7 @@
struct config_param;
struct directory;
+struct db_selection;
struct db_visitor;
/**
@@ -59,6 +60,12 @@ db_get_song(const char *file);
gcc_nonnull(1,2)
bool
+db_visit(const struct db_selection *selection,
+ const struct db_visitor *visitor, void *ctx,
+ GError **error_r);
+
+gcc_nonnull(1,2)
+bool
db_walk(const char *uri,
const struct db_visitor *visitor, void *ctx,
GError **error_r);
diff --git a/src/db/simple_db_plugin.c b/src/db/simple_db_plugin.c
index 8218635fc..e359b5e65 100644
--- a/src/db/simple_db_plugin.c
+++ b/src/db/simple_db_plugin.c
@@ -21,6 +21,8 @@
#include "simple_db_plugin.h"
#include "db_internal.h"
#include "db_error.h"
+#include "db_selection.h"
+#include "db_visitor.h"
#include "db_save.h"
#include "conf.h"
#include "glib_compat.h"
@@ -48,6 +50,17 @@ simple_db_quark(void)
return g_quark_from_static_string("simple_db");
}
+G_GNUC_PURE
+static const struct directory *
+simple_db_lookup_directory(const struct simple_db *db, const char *uri)
+{
+ assert(db != NULL);
+ assert(db->root != NULL);
+ assert(uri != NULL);
+
+ return directory_lookup_directory(db->root, uri);
+}
+
static struct db *
simple_db_init(const struct config_param *param, GError **error_r)
{
@@ -230,6 +243,33 @@ simple_db_get_song(struct db *_db, const char *uri, GError **error_r)
return song;
}
+static bool
+simple_db_visit(struct db *_db, const struct db_selection *selection,
+ const struct db_visitor *visitor, void *ctx,
+ GError **error_r)
+{
+ const struct simple_db *db = (const struct simple_db *)_db;
+ const struct directory *directory =
+ simple_db_lookup_directory(db, selection->uri);
+ if (directory == NULL) {
+ struct song *song;
+ if (visitor->song != NULL &&
+ (song = simple_db_get_song(_db, selection->uri, NULL)) != NULL)
+ return visitor->song(song, ctx, error_r);
+
+ g_set_error(error_r, db_quark(), DB_NOT_FOUND,
+ "No such directory");
+ return false;
+ }
+
+ if (selection->recursive && visitor->directory != NULL &&
+ !visitor->directory(directory, ctx, error_r))
+ return false;
+
+ return directory_walk(directory, selection->recursive,
+ visitor, ctx, error_r);
+}
+
const struct db_plugin simple_db_plugin = {
.name = "simple",
.init = simple_db_init,
@@ -237,6 +277,7 @@ const struct db_plugin simple_db_plugin = {
.open = simple_db_open,
.close = simple_db_close,
.get_song = simple_db_get_song,
+ .visit = simple_db_visit,
};
struct directory *
diff --git a/src/db_plugin.h b/src/db_plugin.h
index 5fec2529e..1c7e14ede 100644
--- a/src/db_plugin.h
+++ b/src/db_plugin.h
@@ -31,6 +31,8 @@
#include <stdbool.h>
struct config_param;
+struct db_selection;
+struct db_visitor;
struct db {
const struct db_plugin *plugin;
@@ -67,6 +69,13 @@ struct db_plugin {
*/
struct song *(*get_song)(struct db *db, const char *uri,
GError **error_r);
+
+ /**
+ * Visit the selected entities.
+ */
+ bool (*visit)(struct db *db, const struct db_selection *selection,
+ const struct db_visitor *visitor, void *ctx,
+ GError **error_r);
};
G_GNUC_MALLOC
@@ -78,6 +87,7 @@ db_plugin_new(const struct db_plugin *plugin, const struct config_param *param,
assert(plugin->init != NULL);
assert(plugin->finish != NULL);
assert(plugin->get_song != NULL);
+ assert(plugin->visit != NULL);
assert(error_r == NULL || *error_r == NULL);
struct db *db = plugin->init(param, error_r);
@@ -129,4 +139,18 @@ db_plugin_get_song(struct db *db, const char *uri, GError **error_r)
return db->plugin->get_song(db, uri, error_r);
}
+static inline bool
+db_plugin_visit(struct db *db, const struct db_selection *selection,
+ const struct db_visitor *visitor, void *ctx,
+ GError **error_r)
+{
+ assert(db != NULL);
+ assert(db->plugin != NULL);
+ assert(selection != NULL);
+ assert(visitor != NULL);
+ assert(error_r == NULL || *error_r == NULL);
+
+ return db->plugin->visit(db, selection, visitor, ctx, error_r);
+}
+
#endif
diff --git a/src/db_selection.h b/src/db_selection.h
new file mode 100644
index 000000000..2cebb4907
--- /dev/null
+++ b/src/db_selection.h
@@ -0,0 +1,56 @@
+/*
+ * 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.
+ */
+
+#ifndef MPD_DB_SELECTION_H
+#define MPD_DB_SELECTION_H
+
+#include "gcc.h"
+
+#include <assert.h>
+
+struct directory;
+struct song;
+
+struct db_selection {
+ /**
+ * The base URI of the search (UTF-8). Must not begin or end
+ * with a slash. NULL or an empty string searches the whole
+ * database.
+ */
+ const char *uri;
+
+ /**
+ * Recursively search all sub directories?
+ */
+ bool recursive;
+};
+
+gcc_nonnull(1,2)
+static inline void
+db_selection_init(struct db_selection *selection,
+ const char *uri, bool recursive)
+{
+ assert(selection != NULL);
+ assert(uri != NULL);
+
+ selection->uri = uri;
+ selection->recursive = recursive;
+}
+
+#endif
diff --git a/src/directory.c b/src/directory.c
index 83fefb8c4..e6ccc60b7 100644
--- a/src/directory.c
+++ b/src/directory.c
@@ -169,7 +169,7 @@ directory_sort(struct directory *directory)
}
bool
-directory_walk(struct directory *directory,
+directory_walk(const struct directory *directory, bool recursive,
const struct db_visitor *visitor, void *ctx,
GError **error_r)
{
@@ -178,7 +178,7 @@ directory_walk(struct directory *directory,
assert(error_r == NULL || *error_r == NULL);
if (visitor->song != NULL) {
- struct songvec *sv = &directory->songs;
+ const struct songvec *sv = &directory->songs;
for (size_t i = 0; i < sv->nr; ++i)
if (!visitor->song(sv->base[i], ctx, error_r))
return false;
@@ -192,7 +192,8 @@ directory_walk(struct directory *directory,
!visitor->directory(child, ctx, error_r))
return false;
- if (!directory_walk(child, visitor, ctx, error_r))
+ if (recursive &&
+ !directory_walk(child, recursive, visitor, ctx, error_r))
return false;
}
diff --git a/src/directory.h b/src/directory.h
index 3359a2e99..ce9c96cd2 100644
--- a/src/directory.h
+++ b/src/directory.h
@@ -131,7 +131,7 @@ void
directory_sort(struct directory *directory);
bool
-directory_walk(struct directory *directory,
+directory_walk(const struct directory *directory, bool recursive,
const struct db_visitor *visitor, void *ctx,
GError **error_r);
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-16 03:31:21 +0000