Mapper: move map_song_detach() to db/DatabaseSong.cxx

Use Storage::MapUTF8() internally, don't use global variables.

src/DetachedSong.hxx

@@ -30,9 +30,12 @@
 #include <time.h>
 
 struct LightSong;
+class Storage;
 
 class DetachedSong {
 	friend DetachedSong map_song_detach(const LightSong &song);
+	friend DetachedSong DatabaseDetachSong(const Storage &db,
+					       const LightSong &song);
 
 	/**
 	 * An UTF-8-encoded URI referring to the song file.  This can

src/Mapper.cxx

@@ -234,21 +234,6 @@ map_directory_child_fs(const Directory &directory, const char *name)
 	return AllocatedPath::Build(parent_fs, name_fs);
 }
 
-DetachedSong
-map_song_detach(const LightSong &song)
-{
-	DetachedSong detached(song);
-	assert(detached.IsInDatabase());
-
-	if (!detached.HasRealURI()) {
-		const auto uri = song.GetURI();
-		detached.SetRealURI(PathTraitsUTF8::Build(music_dir_utf8.c_str(),
-							  uri.c_str()));
-	}
-
-	return detached;
-}
-
 AllocatedPath
 map_song_fs(const Song &song)
 {

src/Mapper.hxx

@@ -91,14 +91,6 @@ gcc_pure
 AllocatedPath
 map_uri_fs(const char *uri);
 
-/**
- * "Detach" the #Song object, i.e. convert it to a #DetachedSong
- * instance.
- */
-gcc_pure
-DetachedSong
-map_song_detach(const LightSong &song);
-
 /**
  * Determines the file system path of a song.  This must not be a
  * remote song.

src/PlaylistSave.cxx

@@ -118,7 +118,7 @@ playlist_load_spl(struct playlist &playlist, PlayerControl &pc,
 	if (end_index > contents.size())
 		end_index = contents.size();
 
-	const SongLoader loader(nullptr);
+	const SongLoader loader(nullptr, nullptr);
 
 	for (unsigned i = start_index; i < end_index; ++i) {
 		const auto &uri_utf8 = contents[i];

src/SongLoader.cxx

@@ -36,7 +36,8 @@
 #ifdef ENABLE_DATABASE
 
 SongLoader::SongLoader(const Client &_client)
-	:client(&_client), db(_client.GetDatabase(IgnoreError())) {}
+	:client(&_client), db(_client.GetDatabase(IgnoreError())),
+	 storage(_client.GetStorage()) {}
 
 #endif
 
@@ -100,7 +101,8 @@ SongLoader::LoadSong(const char *uri_utf8, Error &error) const
 
 #ifdef ENABLE_DATABASE
 		if (db != nullptr)
-			return DatabaseDetachSong(*db, uri_utf8, error);
+			return DatabaseDetachSong(*db, *storage,
+						  uri_utf8, error);
 #endif
 
 		error.Set(playlist_domain, int(PlaylistResult::NO_SUCH_SONG),

src/SongLoader.hxx

@@ -27,6 +27,7 @@
 
 class Client;
 class Database;
+class Storage;
 class DetachedSong;
 class Error;
 
@@ -41,19 +42,21 @@ class SongLoader {
 
 #ifdef ENABLE_DATABASE
 	const Database *const db;
+	const Storage *const storage;
 #endif
 
 public:
 #ifdef ENABLE_DATABASE
 	explicit SongLoader(const Client &_client);
-	explicit SongLoader(const Database *_db)
+	SongLoader(const Database *_db, const Storage *_storage)
-		:client(nullptr), db(_db) {}
+		:client(nullptr), db(_db), storage(_storage) {}
-	explicit SongLoader(const Client &_client, const Database *_db)
+	SongLoader(const Client &_client, const Database *_db,
-		:client(&_client), db(_db) {}
+		   const Storage *_storage)
+		:client(&_client), db(_db), storage(_storage) {}
 #else
 	explicit SongLoader(const Client &_client)
 		:client(&_client) {}
-	explicit SongLoader(std::nullptr_t)
+	explicit SongLoader(std::nullptr_t, std::nullptr_t)
 		:client(nullptr) {}
 #endif
 

src/StateFile.cxx

@@ -99,9 +99,10 @@ StateFile::Read()
 	}
 
 #ifdef ENABLE_DATABASE
-	const SongLoader song_loader(partition.instance.database);
+	const SongLoader song_loader(partition.instance.database,
+				     partition.instance.storage);
 #else
-	const SongLoader song_loader(nullptr);
+	const SongLoader song_loader(nullptr, nullptr);
 #endif
 
 	const char *line;

src/client/Client.cxx

@@ -33,4 +33,10 @@ Client::GetDatabase(Error &error) const
 	return partition.instance.GetDatabase(error);
 }
 
+const Storage *
+Client::GetStorage() const
+{
+	return partition.instance.storage;
+}
+
 #endif

src/client/Client.hxx

@@ -39,6 +39,7 @@ class EventLoop;
 class Path;
 struct Partition;
 class Database;
+class Storage;
 
 class Client final : private FullyBufferedSocket, TimeoutMonitor {
 public:
@@ -173,8 +174,12 @@ public:
 	/**
 	 * Wrapper for Instance::GetDatabase().
 	 */
+	gcc_pure
 	const Database *GetDatabase(Error &error) const;
 
+	gcc_pure
+	const Storage *GetStorage() const;
+
 private:
 	/* virtual methods from class BufferedSocket */
 	virtual InputResult OnSocketInput(void *data, size_t length) override;

src/command/DatabaseCommands.cxx

@@ -124,7 +124,8 @@ handle_searchaddpl(Client &client, int argc, char *argv[])
 	if (db == nullptr)
 		return print_error(client, error);
 
-	return search_add_to_playlist(*db, "", playlist, &filter, error)
+	return search_add_to_playlist(*db, *client.GetStorage(),
+				      "", playlist, &filter, error)
 		? CommandResult::OK
 		: print_error(client, error);
 }

src/command/PlaylistCommands.cxx

@@ -196,7 +196,8 @@ handle_playlistadd(Client &client, gcc_unused int argc, char *argv[])
 		if (db == nullptr)
 			return print_error(client, error);
 
-		success = search_add_to_playlist(*db, uri, playlist, nullptr,
+		success = search_add_to_playlist(*db, *client.GetStorage(),
+						 uri, playlist, nullptr,
 						 error);
 #else
 		success = false;

src/db/DatabasePlaylist.cxx

@@ -19,24 +19,26 @@
 
 #include "config.h"
 #include "DatabasePlaylist.hxx"
+#include "DatabaseSong.hxx"
 #include "Selection.hxx"
 #include "PlaylistFile.hxx"
 #include "DatabasePlugin.hxx"
 #include "DetachedSong.hxx"
-#include "Mapper.hxx"
+#include "storage/StorageInterface.hxx"
 
 #include <functional>
 
 static bool
-AddSong(const char *playlist_path_utf8,
+AddSong(const Storage &storage, const char *playlist_path_utf8,
 	const LightSong &song, Error &error)
 {
-	return spl_append_song(playlist_path_utf8, map_song_detach(song),
+	return spl_append_song(playlist_path_utf8,
+			       DatabaseDetachSong(storage, song),
 			       error);
 }
 
 bool
-search_add_to_playlist(const Database &db,
+search_add_to_playlist(const Database &db, const Storage &storage,
 		       const char *uri, const char *playlist_path_utf8,
 		       const SongFilter *filter,
 		       Error &error)
@@ -44,6 +46,7 @@ search_add_to_playlist(const Database &db,
 	const DatabaseSelection selection(uri, true, filter);
 
 	using namespace std::placeholders;
-	const auto f = std::bind(AddSong, playlist_path_utf8, _1, _2);
+	const auto f = std::bind(AddSong, std::ref(storage),
+				 playlist_path_utf8, _1, _2);
 	return db.Visit(selection, f, error);
 }

src/db/DatabasePlaylist.hxx

@@ -23,12 +23,13 @@
 #include "Compiler.h"
 
 class Database;
+class Storage;
 class SongFilter;
 class Error;
 
-gcc_nonnull(2,3)
+gcc_nonnull(3,4)
 bool
-search_add_to_playlist(const Database &db,
+search_add_to_playlist(const Database &db, const Storage &storage,
 		       const char *uri, const char *path_utf8,
 		       const SongFilter *filter,
 		       Error &error);

src/db/DatabaseQueue.cxx

@@ -19,22 +19,23 @@
 
 #include "config.h"
 #include "DatabaseQueue.hxx"
-#include "DatabaseGlue.hxx"
+#include "DatabaseSong.hxx"
 #include "DatabasePlugin.hxx"
 #include "Partition.hxx"
 #include "Instance.hxx"
 #include "util/Error.hxx"
 #include "DetachedSong.hxx"
-#include "Mapper.hxx"
 
 #include <functional>
 
 static bool
 AddToQueue(Partition &partition, const LightSong &song, Error &error)
 {
+	const Storage &storage = *partition.instance.storage;
 	PlaylistResult result =
 		partition.playlist.AppendSong(partition.pc,
-					      map_song_detach(song),
+					      DatabaseDetachSong(storage,
+								 song),
 					      nullptr);
 	if (result != PlaylistResult::SUCCESS) {
 		error.Set(playlist_domain, int(result), "Playlist error");

src/db/DatabaseSong.cxx

@@ -19,18 +19,35 @@
 
 #include "config.h"
 #include "DatabaseSong.hxx"
+#include "LightSong.hxx"
 #include "DatabasePlugin.hxx"
 #include "DetachedSong.hxx"
-#include "Mapper.hxx"
+#include "storage/StorageInterface.hxx"
+
+DetachedSong
+DatabaseDetachSong(const Storage &storage, const LightSong &song)
+{
+	DetachedSong detached(song);
+	assert(detached.IsInDatabase());
+
+	if (!detached.HasRealURI()) {
+		const auto uri = song.GetURI();
+		detached.SetRealURI(storage.MapUTF8(uri.c_str()));
+	}
+
+	return detached;
+}
 
 DetachedSong *
-DatabaseDetachSong(const Database &db, const char *uri, Error &error)
+DatabaseDetachSong(const Database &db, const Storage &storage, const char *uri,
+		   Error &error)
 {
 	const LightSong *tmp = db.GetSong(uri, error);
 	if (tmp == nullptr)
 		return nullptr;
 
-	DetachedSong *song = new DetachedSong(map_song_detach(*tmp));
+	DetachedSong *song = new DetachedSong(DatabaseDetachSong(storage,
+								 *tmp));
 	db.ReturnSong(tmp);
 	return song;
 }

src/db/DatabaseSong.hxx

@@ -22,10 +22,20 @@
 
 #include "Compiler.h"
 
+struct LightSong;
 class Database;
+class Storage;
 class DetachedSong;
 class Error;
 
+/**
+ * "Detach" the #Song object, i.e. convert it to a #DetachedSong
+ * instance.
+ */
+gcc_pure
+DetachedSong
+DatabaseDetachSong(const Storage &storage, const LightSong &song);
+
 /**
  * Look up a song in the database and convert it to a #DetachedSong
  * instance.  The caller is responsible for freeing it.
@@ -34,6 +44,7 @@ class Error;
  */
 gcc_malloc gcc_nonnull_all
 DetachedSong *
-DatabaseDetachSong(const Database &db, const char *uri, Error &error);
+DatabaseDetachSong(const Database &db, const Storage &storage, const char *uri,
+		   Error &error);
 
 #endif

test/test_translate_song.cxx

@@ -117,7 +117,9 @@ static const char *uri1 = "/foo/bar.ogg";
 static const char *uri2 = "foo/bar.ogg";
 
 DetachedSong *
-DatabaseDetachSong(gcc_unused const Database &db, const char *uri,
+DatabaseDetachSong(gcc_unused const Database &db,
+		   gcc_unused const Storage &storage,
+		   const char *uri,
 		   gcc_unused Error &error)
 {
 	if (strcmp(uri, uri2) == 0)
@@ -143,6 +145,12 @@ Client::GetDatabase(gcc_unused Error &error) const
 	return reinterpret_cast<const Database *>(this);
 }
 
+const Storage *
+Client::GetStorage() const
+{
+	return reinterpret_cast<const Storage *>(this);
+}
+
 bool
 Client::AllowFile(gcc_unused Path path_fs, gcc_unused Error &error) const
 {
@@ -217,7 +225,7 @@ class TranslateSongTest : public CppUnit::TestFixture {
 	void TestAbsoluteURI() {
 		DetachedSong song1("http://example.com/foo.ogg");
 		auto se = ToString(song1);
-		const SongLoader loader(nullptr);
+		const SongLoader loader(nullptr, nullptr);
 		CPPUNIT_ASSERT(playlist_check_translate_song(song1, "/ignored",
 							     loader));
 		CPPUNIT_ASSERT_EQUAL(se, ToString(song1));
@@ -236,14 +244,15 @@ class TranslateSongTest : public CppUnit::TestFixture {
 		auto s1 = ToString(song1);
 		auto se = ToString(DetachedSong(uri1, MakeTag1c()));
 
-		const SongLoader loader(nullptr);
+		const SongLoader loader(nullptr, nullptr);
 		CPPUNIT_ASSERT(playlist_check_translate_song(song1, "/ignored",
 							     loader));
 		CPPUNIT_ASSERT_EQUAL(se, ToString(song1));
 	}
 
 	void TestInDatabase() {
-		const SongLoader loader(reinterpret_cast<const Database *>(1));
+		const SongLoader loader(reinterpret_cast<const Database *>(1),
+					reinterpret_cast<const Storage *>(2));
 
 		DetachedSong song1("doesntexist");
 		CPPUNIT_ASSERT(!playlist_check_translate_song(song1, nullptr,
@@ -266,9 +275,10 @@ class TranslateSongTest : public CppUnit::TestFixture {
 
 	void TestRelative() {
 		const Database &db = *reinterpret_cast<const Database *>(1);
-		const SongLoader secure_loader(&db);
+		const Storage &storage = *reinterpret_cast<const Storage *>(2);
+		const SongLoader secure_loader(&db, &storage);
 		const SongLoader insecure_loader(*reinterpret_cast<const Client *>(1),
-						 &db);
+						 &db, &storage);
 
 		/* map to music_directory */
 		DetachedSong song1("bar.ogg", MakeTag2b());