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authorMax Kellermann <max@duempel.org>2014-01-24 16:18:50 +0100
committerMax Kellermann <max@duempel.org>2014-01-24 16:38:44 +0100
commit9d34fc394ce30a28ec0e43f2ad7172b8de8b3be6 (patch)
tree4b58951bc81b17f16140c7f743a163bd837827bf /src/db/SimpleDatabasePlugin.cxx
parent973c9872f930d73a8ddc98e4802b242aea9f0dba (diff)
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Database*: move to db/
Diffstat (limited to 'src/db/SimpleDatabasePlugin.cxx')
-rw-r--r--src/db/SimpleDatabasePlugin.cxx336
1 files changed, 0 insertions, 336 deletions
diff --git a/src/db/SimpleDatabasePlugin.cxx b/src/db/SimpleDatabasePlugin.cxx
deleted file mode 100644
index 73e080b41..000000000
--- a/src/db/SimpleDatabasePlugin.cxx
+++ /dev/null
@@ -1,336 +0,0 @@
-/*
- * Copyright (C) 2003-2014 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 "SimpleDatabasePlugin.hxx"
-#include "DatabaseSelection.hxx"
-#include "DatabaseHelpers.hxx"
-#include "LightDirectory.hxx"
-#include "Directory.hxx"
-#include "Song.hxx"
-#include "SongFilter.hxx"
-#include "DatabaseSave.hxx"
-#include "DatabaseLock.hxx"
-#include "DatabaseError.hxx"
-#include "fs/TextFile.hxx"
-#include "config/ConfigData.hxx"
-#include "fs/FileSystem.hxx"
-#include "util/Error.hxx"
-#include "util/Domain.hxx"
-#include "Log.hxx"
-
-#include <errno.h>
-
-static constexpr Domain simple_db_domain("simple_db");
-
-Database *
-SimpleDatabase::Create(gcc_unused EventLoop &loop,
- gcc_unused DatabaseListener &listener,
- const config_param &param, Error &error)
-{
- SimpleDatabase *db = new SimpleDatabase();
- if (!db->Configure(param, error)) {
- delete db;
- db = nullptr;
- }
-
- return db;
-}
-
-bool
-SimpleDatabase::Configure(const config_param &param, Error &error)
-{
- path = param.GetBlockPath("path", error);
- if (path.IsNull()) {
- if (!error.IsDefined())
- error.Set(simple_db_domain,
- "No \"path\" parameter specified");
- return false;
- }
-
- path_utf8 = path.ToUTF8();
-
- return true;
-}
-
-bool
-SimpleDatabase::Check(Error &error) const
-{
- assert(!path.IsNull());
-
- /* Check if the file exists */
- if (!CheckAccess(path)) {
- /* If the file doesn't exist, we can't check if we can write
- * it, so we are going to try to get the directory path, and
- * see if we can write a file in that */
- const auto dirPath = path.GetDirectoryName();
-
- /* Check that the parent part of the path is a directory */
- struct stat st;
- if (!StatFile(dirPath, st)) {
- error.FormatErrno("Couldn't stat parent directory of db file "
- "\"%s\"",
- path_utf8.c_str());
- return false;
- }
-
- if (!S_ISDIR(st.st_mode)) {
- error.Format(simple_db_domain,
- "Couldn't create db file \"%s\" because the "
- "parent path is not a directory",
- path_utf8.c_str());
- return false;
- }
-
-#ifndef WIN32
- /* Check if we can write to the directory */
- if (!CheckAccess(dirPath, X_OK | W_OK)) {
- const int e = errno;
- const std::string dirPath_utf8 = dirPath.ToUTF8();
- error.FormatErrno(e, "Can't create db file in \"%s\"",
- dirPath_utf8.c_str());
- return false;
- }
-#endif
- return true;
- }
-
- /* Path exists, now check if it's a regular file */
- struct stat st;
- if (!StatFile(path, st)) {
- error.FormatErrno("Couldn't stat db file \"%s\"",
- path_utf8.c_str());
- return false;
- }
-
- if (!S_ISREG(st.st_mode)) {
- error.Format(simple_db_domain,
- "db file \"%s\" is not a regular file",
- path_utf8.c_str());
- return false;
- }
-
-#ifndef WIN32
- /* And check that we can write to it */
- if (!CheckAccess(path, R_OK | W_OK)) {
- error.FormatErrno("Can't open db file \"%s\" for reading/writing",
- path_utf8.c_str());
- return false;
- }
-#endif
-
- return true;
-}
-
-bool
-SimpleDatabase::Load(Error &error)
-{
- assert(!path.IsNull());
- assert(root != nullptr);
-
- TextFile file(path);
- if (file.HasFailed()) {
- error.FormatErrno("Failed to open database file \"%s\"",
- path_utf8.c_str());
- return false;
- }
-
- if (!db_load_internal(file, *root, error))
- return false;
-
- struct stat st;
- if (StatFile(path, st))
- mtime = st.st_mtime;
-
- return true;
-}
-
-bool
-SimpleDatabase::Open(Error &error)
-{
- root = Directory::NewRoot();
- mtime = 0;
-
-#ifndef NDEBUG
- borrowed_song_count = 0;
-#endif
-
- if (!Load(error)) {
- delete root;
-
- LogError(error);
- error.Clear();
-
- if (!Check(error))
- return false;
-
- root = Directory::NewRoot();
- }
-
- return true;
-}
-
-void
-SimpleDatabase::Close()
-{
- assert(root != nullptr);
- assert(borrowed_song_count == 0);
-
- delete root;
-}
-
-const LightSong *
-SimpleDatabase::GetSong(const char *uri, Error &error) const
-{
- assert(root != nullptr);
- assert(borrowed_song_count == 0);
-
- db_lock();
- const Song *song = root->LookupSong(uri);
- db_unlock();
- if (song == nullptr) {
- error.Format(db_domain, DB_NOT_FOUND,
- "No such song: %s", uri);
- return nullptr;
- }
-
- light_song = song->Export();
-
-#ifndef NDEBUG
- ++borrowed_song_count;
-#endif
-
- return &light_song;
-}
-
-void
-SimpleDatabase::ReturnSong(gcc_unused const LightSong *song) const
-{
- assert(song == &light_song);
-
-#ifndef NDEBUG
- assert(borrowed_song_count > 0);
- --borrowed_song_count;
-#endif
-}
-
-gcc_pure
-const Directory *
-SimpleDatabase::LookupDirectory(const char *uri) const
-{
- assert(root != nullptr);
- assert(uri != nullptr);
-
- ScopeDatabaseLock protect;
- return root->LookupDirectory(uri);
-}
-
-bool
-SimpleDatabase::Visit(const DatabaseSelection &selection,
- VisitDirectory visit_directory,
- VisitSong visit_song,
- VisitPlaylist visit_playlist,
- Error &error) const
-{
- ScopeDatabaseLock protect;
-
- const Directory *directory = root->LookupDirectory(selection.uri.c_str());
- if (directory == nullptr) {
- if (visit_song) {
- Song *song = root->LookupSong(selection.uri.c_str());
- if (song != nullptr) {
- const LightSong song2 = song->Export();
- return !selection.Match(song2) ||
- visit_song(song2, error);
- }
- }
-
- error.Set(db_domain, DB_NOT_FOUND, "No such directory");
- return false;
- }
-
- if (selection.recursive && visit_directory &&
- !visit_directory(directory->Export(), error))
- return false;
-
- return directory->Walk(selection.recursive, selection.filter,
- visit_directory, visit_song, visit_playlist,
- error);
-}
-
-bool
-SimpleDatabase::VisitUniqueTags(const DatabaseSelection &selection,
- TagType tag_type,
- VisitString visit_string,
- Error &error) const
-{
- return ::VisitUniqueTags(*this, selection, tag_type, visit_string,
- error);
-}
-
-bool
-SimpleDatabase::GetStats(const DatabaseSelection &selection,
- DatabaseStats &stats, Error &error) const
-{
- return ::GetStats(*this, selection, stats, error);
-}
-
-bool
-SimpleDatabase::Save(Error &error)
-{
- db_lock();
-
- LogDebug(simple_db_domain, "removing empty directories from DB");
- root->PruneEmpty();
-
- LogDebug(simple_db_domain, "sorting DB");
- root->Sort();
-
- db_unlock();
-
- LogDebug(simple_db_domain, "writing DB");
-
- FILE *fp = FOpen(path, FOpenMode::WriteText);
- if (!fp) {
- error.FormatErrno("unable to write to db file \"%s\"",
- path_utf8.c_str());
- return false;
- }
-
- db_save_internal(fp, *root);
-
- if (ferror(fp)) {
- error.SetErrno("Failed to write to database file");
- fclose(fp);
- return false;
- }
-
- fclose(fp);
-
- struct stat st;
- if (StatFile(path, st))
- mtime = st.st_mtime;
-
- return true;
-}
-
-const DatabasePlugin simple_db_plugin = {
- "simple",
- SimpleDatabase::Create,
-};