From eec456be63f6fee8604f7a9c40aa41a1af3f1fac Mon Sep 17 00:00:00 2001
From: sfan5 <sfan5@live.de>
Date: Tue, 8 Jul 2014 20:04:37 +0200
Subject: Move MapBlock (de)serializing code out of Database class

---
 src/database-leveldb.cpp | 118 ++++-------------------------------------------
 1 file changed, 9 insertions(+), 109 deletions(-)

(limited to 'src/database-leveldb.cpp')

diff --git a/src/database-leveldb.cpp b/src/database-leveldb.cpp
index 0cf685740..d57462be9 100644
--- a/src/database-leveldb.cpp
+++ b/src/database-leveldb.cpp
@@ -58,129 +58,29 @@ int Database_LevelDB::Initialized(void)
 void Database_LevelDB::beginSave() {}
 void Database_LevelDB::endSave() {}
 
-bool Database_LevelDB::saveBlock(MapBlock *block)
+bool Database_LevelDB::saveBlock(v3s16 blockpos, std::string &data)
 {
-	DSTACK(__FUNCTION_NAME);
-
-	v3s16 p3d = block->getPos();
-
-	/*
-		Dummy blocks are not written
-	*/
-	if(block->isDummy())
-	{
-		errorstream << "WARNING: saveBlock: Not writing dummy block "
-				<< PP(p3d) << std::endl;
-		return true;
-	}
-
-	// Format used for writing
-	u8 version = SER_FMT_VER_HIGHEST_WRITE;
-
-	/*
-		[0] u8 serialization version
-		[1] data
-	*/
-	std::ostringstream o(std::ios_base::binary);
-	o.write((char*)&version, 1);
-	// Write basic data
-	block->serialize(o, version, true);
-	// Write block to database
-	std::string tmp = o.str();
-
 	leveldb::Status status = m_database->Put(leveldb::WriteOptions(),
-			i64tos(getBlockAsInteger(p3d)), tmp);
+			i64tos(getBlockAsInteger(blockpos)), data);
 	if (!status.ok()) {
 		errorstream << "WARNING: saveBlock: LevelDB error saving block "
-			<< PP(p3d) << ": " << status.ToString() << std::endl;
+			<< PP(blockpos) << ": " << status.ToString() << std::endl;
 		return false;
 	}
 
-	// We just wrote it to the disk so clear modified flag
-	block->resetModified();
 	return true;
 }
 
-MapBlock* Database_LevelDB::loadBlock(v3s16 blockpos)
+std::string Database_LevelDB::loadBlock(v3s16 blockpos)
 {
-	v2s16 p2d(blockpos.X, blockpos.Z);
-
 	std::string datastr;
 	leveldb::Status status = m_database->Get(leveldb::ReadOptions(),
 		i64tos(getBlockAsInteger(blockpos)), &datastr);
-	if (datastr.length() == 0 && status.ok()) {
-		errorstream << "Blank block data in database (datastr.length() == 0) ("
-			<< blockpos.X << "," << blockpos.Y << "," << blockpos.Z << ")" << std::endl;
-
-		if (g_settings->getBool("ignore_world_load_errors")) {
-			errorstream << "Ignoring block load error. Duck and cover! "
-				<< "(ignore_world_load_errors)" << std::endl;
-		} else {
-			throw SerializationError("Blank block data in database");
-		}
-		return NULL;
-	} 
-	if (status.ok()) {
-		/*
-			Make sure sector is loaded
-		*/
-		MapSector *sector = srvmap->createSector(p2d);
-
-		try {
-			std::istringstream is(datastr, std::ios_base::binary);
-			u8 version = SER_FMT_VER_INVALID;
-			is.read((char *)&version, 1);
-
-			if (is.fail())
-				throw SerializationError("ServerMap::loadBlock(): Failed"
-					" to read MapBlock version");
-
-			MapBlock *block = NULL;
-			bool created_new = false;
-			block = sector->getBlockNoCreateNoEx(blockpos.Y);
-			if (block == NULL)
-			{
-				block = sector->createBlankBlockNoInsert(blockpos.Y);
-				created_new = true;
-			}
-
-			// Read basic data
-			block->deSerialize(is, version, true);
-
-			// If it's a new block, insert it to the map
-			if (created_new)
-				sector->insertBlock(block);
-
-			/*
-				Save blocks loaded in old format in new format
-			*/
-			//if(version < SER_FMT_VER_HIGHEST || save_after_load)
-			// Only save if asked to; no need to update version
-			//if(save_after_load)
-			//     	saveBlock(block);
-			// We just loaded it from, so it's up-to-date.
-			block->resetModified();
-		}
-		catch (SerializationError &e)
-		{
-			errorstream << "Invalid block data in database"
-				<< " (" << blockpos.X << "," << blockpos.Y << "," << blockpos.Z
-				<< ") (SerializationError): " << e.what() << std::endl;
-			// TODO: Block should be marked as invalid in memory so that it is
-			// not touched but the game can run
-
-			if (g_settings->getBool("ignore_world_load_errors")) {
-				errorstream << "Ignoring block load error. Duck and cover! "
-					<< "(ignore_world_load_errors)" << std::endl;
-			} else {
-				throw SerializationError("Invalid block data in database");
-				//assert(0);
-			}
-		}
-
-		return srvmap->getBlockNoCreateNoEx(blockpos);  // should not be using this here
-	}
-	return NULL;
+
+	if(status.ok())
+		return datastr;
+	else
+		return "";
 }
 
 void Database_LevelDB::listAllLoadableBlocks(std::list<v3s16> &dst)
-- 
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