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db/DatabasePlaylist: pass Database reference around 

Reduce global variable usage, move to frontend code.
This commit is contained in:
Max Kellermann 2014-02-01 01:11:50 +01:00
parent db69ceade6
commit 29072797ca
9 changed files with 53 additions and 27 deletions
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7
src/SongLoader.cxx
View File

@ -92,11 +92,12 @@ SongLoader::LoadSong(const char *uri_utf8, Error &error) const
/* URI relative to the music directory */
#ifdef ENABLE_DATABASE
return DatabaseDetachSong(uri_utf8, error);
#else
if (db != nullptr)
return DatabaseDetachSong(*db, uri_utf8, error);
#endif
error.Set(playlist_domain, int(PlaylistResult::NO_SUCH_SONG),
"No database");
return nullptr;
#endif
}
}

19
src/SongLoader.hxx
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@ -20,9 +20,13 @@
#ifndef MPD_SONG_LOADER_HXX
#define MPD_SONG_LOADER_HXX
#include "check.h"
#include "Compiler.h"
#include <cstddef>
class Client;
class Database;
class DetachedSong;
class Error;
@ -35,11 +39,26 @@ class Error;
class SongLoader {
const Client *const client;
#ifdef ENABLE_DATABASE
const Database *const db;
#endif
public:
#ifdef ENABLE_DATABASE
SongLoader(const Client *_client, const Database *_db=nullptr)
:client(_client), db(_db) {}
explicit SongLoader(const Client &_client)
:client(&_client), db(nullptr) {}
explicit SongLoader(const Database *_db)
:client(nullptr), db(_db) {}
explicit SongLoader(std::nullptr_t)
:client(nullptr), db(nullptr) {}
#else
explicit SongLoader(const Client &_client)
:client(&_client) {}
explicit SongLoader(const Client *_client)
:client(_client) {}
#endif
gcc_nonnull_all
DetachedSong *LoadSong(const char *uri_utf8, Error &error) const;

7
src/command/DatabaseCommands.cxx
View File

@ -19,6 +19,7 @@
#include "config.h"
#include "DatabaseCommands.hxx"
#include "db/DatabaseGlue.hxx"
#include "db/DatabaseQueue.hxx"
#include "db/DatabasePlaylist.hxx"
#include "db/DatabasePrint.hxx"
@ -119,7 +120,11 @@ handle_searchaddpl(Client &client, int argc, char *argv[])
}
Error error;
return search_add_to_playlist("", playlist, &filter, error)
const Database *db = GetDatabase(error);
if (db == nullptr)
return print_error(client, error);
return search_add_to_playlist(*db, "", playlist, &filter, error)
? CommandResult::OK
: print_error(client, error);
}

7
src/command/PlaylistCommands.cxx
View File

@ -19,6 +19,7 @@
#include "config.h"
#include "PlaylistCommands.hxx"
#include "db/DatabaseGlue.hxx"
#include "db/DatabasePlaylist.hxx"
#include "CommandError.hxx"
#include "PlaylistPrint.hxx"
@ -192,7 +193,11 @@ handle_playlistadd(Client &client, gcc_unused int argc, char *argv[])
success = spl_append_uri(playlist, loader, uri, error);
} else {
#ifdef ENABLE_DATABASE
success = search_add_to_playlist(uri, playlist, nullptr,
const Database *db = GetDatabase(error);
if (db == nullptr)
return print_error(client, error);
success = search_add_to_playlist(*db, uri, playlist, nullptr,
error);
#else
success = false;

10
src/db/DatabasePlaylist.cxx
View File

@ -21,7 +21,6 @@
#include "DatabasePlaylist.hxx"
#include "Selection.hxx"
#include "PlaylistFile.hxx"
#include "DatabaseGlue.hxx"
#include "DatabasePlugin.hxx"
#include "DetachedSong.hxx"
#include "Mapper.hxx"
@ -37,17 +36,14 @@ AddSong(const char *playlist_path_utf8,
}
bool
search_add_to_playlist(const char *uri, const char *playlist_path_utf8,
search_add_to_playlist(const Database &db,
const char *uri, const char *playlist_path_utf8,
const SongFilter *filter,
Error &error)
{
const Database *db = GetDatabase(error);
if (db == nullptr)
return false;
const DatabaseSelection selection(uri, true, filter);
using namespace std::placeholders;
const auto f = std::bind(AddSong, playlist_path_utf8, _1, _2);
return db->Visit(selection, f, error);
return db.Visit(selection, f, error);
}

6
src/db/DatabasePlaylist.hxx
View File

@ -22,12 +22,14 @@
#include "Compiler.h"
class Database;
class SongFilter;
class Error;
gcc_nonnull(1,2)
gcc_nonnull(2,3)
bool
search_add_to_playlist(const char *uri, const char *path_utf8,
search_add_to_playlist(const Database &db,
const char *uri, const char *path_utf8,
const SongFilter *filter,
Error &error);

11
src/db/DatabaseSong.cxx
View File

@ -19,23 +19,18 @@
#include "config.h"
#include "DatabaseSong.hxx"
#include "DatabaseGlue.hxx"
#include "DatabasePlugin.hxx"
#include "DetachedSong.hxx"
#include "Mapper.hxx"
DetachedSong *
DatabaseDetachSong(const char *uri, Error &error)
DatabaseDetachSong(const Database &db, const char *uri, Error &error)
{
const Database *db = GetDatabase(error);
if (db == nullptr)
return nullptr;
const LightSong *tmp = db->GetSong(uri, error);
const LightSong *tmp = db.GetSong(uri, error);
if (tmp == nullptr)
return nullptr;
DetachedSong *song = new DetachedSong(map_song_detach(*tmp));
db->ReturnSong(tmp);
db.ReturnSong(tmp);
return song;
}

3
src/db/DatabaseSong.hxx
View File

@ -22,6 +22,7 @@
#include "Compiler.h"
class Database;
class DetachedSong;
class Error;
@ -33,6 +34,6 @@ class Error;
*/
gcc_malloc gcc_nonnull_all
DetachedSong *
DatabaseDetachSong(const char *uri, Error &error);
DatabaseDetachSong(const Database &db, const char *uri, Error &error);
#endif

10
test/test_translate_song.cxx
View File

@ -117,7 +117,8 @@ static const char *uri1 = "/foo/bar.ogg";
static const char *uri2 = "foo/bar.ogg";
DetachedSong *
DatabaseDetachSong(const char *uri, gcc_unused Error &error)
DatabaseDetachSong(gcc_unused const Database &db, const char *uri,
gcc_unused Error &error)
{
if (strcmp(uri, uri2) == 0)
return new DetachedSong(uri, MakeTag2a());
@ -236,7 +237,7 @@ class TranslateSongTest : public CppUnit::TestFixture {
}
void TestInDatabase() {
const SongLoader loader(nullptr);
const SongLoader loader(reinterpret_cast<const Database *>(1));
DetachedSong song1("doesntexist");
CPPUNIT_ASSERT(!playlist_check_translate_song(song1, nullptr,
@ -258,8 +259,9 @@ class TranslateSongTest : public CppUnit::TestFixture {
}
void TestRelative() {
const SongLoader secure_loader(nullptr);
const SongLoader insecure_loader(reinterpret_cast<const Client *>(1));
const Database &db = *reinterpret_cast<const Database *>(1);
const SongLoader secure_loader(&db);
const SongLoader insecure_loader(reinterpret_cast<const Client *>(1), &db);
/* map to music_directory */
DetachedSong song1("bar.ogg", MakeTag2b());