From 4f09e8df6ecf20bd50573b7bf40c46f5ade21124 Mon Sep 17 00:00:00 2001
From: Tycho <work.tycho+git@gmail.com>
Date: Mon, 20 Jan 2014 09:59:12 -0800
Subject: Moved Schematic file methods to seperate class

---
 src/WorldStorage/SchematicFileSerilizer.cpp | 155 ++++++++++++++++++++++++++++
 1 file changed, 155 insertions(+)
 create mode 100644 src/WorldStorage/SchematicFileSerilizer.cpp

(limited to 'src/WorldStorage/SchematicFileSerilizer.cpp')

diff --git a/src/WorldStorage/SchematicFileSerilizer.cpp b/src/WorldStorage/SchematicFileSerilizer.cpp
new file mode 100644
index 000000000..bce0119ec
--- /dev/null
+++ b/src/WorldStorage/SchematicFileSerilizer.cpp
@@ -0,0 +1,155 @@
+
+bool cSchematicFileSerializer::LoadFromSchematicFile(const AString & a_FileName)
+{
+	// Un-GZip the contents:
+	AString Contents;
+	cGZipFile File;
+	if (!File.Open(a_FileName, cGZipFile::fmRead))
+	{
+		LOG("Cannot open the schematic file \"%s\".", a_FileName.c_str());
+		return false;
+	}
+	int NumBytesRead = File.ReadRestOfFile(Contents);
+	if (NumBytesRead < 0)
+	{
+		LOG("Cannot read GZipped data in the schematic file \"%s\", error %d", a_FileName.c_str(), NumBytesRead);
+		return false;
+	}
+	File.Close();
+	
+	// Parse the NBT:
+	cParsedNBT NBT(Contents.data(), Contents.size());
+	if (!NBT.IsValid())
+	{
+		LOG("Cannot parse the NBT in the schematic file \"%s\".", a_FileName.c_str());
+		return false;
+	}
+	
+	return LoadFromSchematicNBT(NBT);
+}
+
+bool cSchematicFileSerializer::SaveToSchematicFile(const AString & a_FileName)
+{
+	cFastNBTWriter Writer("Schematic");
+	Writer.AddShort("Width", m_SizeX);
+	Writer.AddShort("Height", m_SizeY);
+	Writer.AddShort("Length", m_SizeZ);
+	Writer.AddString("Materials", "Alpha");
+	if (HasBlockTypes())
+	{
+		Writer.AddByteArray("Blocks", (const char *)m_BlockTypes, GetBlockCount());
+	}
+	else
+	{
+		AString Dummy(GetBlockCount(), 0);
+		Writer.AddByteArray("Blocks", Dummy.data(), Dummy.size());
+	}
+	if (HasBlockMetas())
+	{
+		Writer.AddByteArray("Data", (const char *)m_BlockMetas, GetBlockCount());
+	}
+	else
+	{
+		AString Dummy(GetBlockCount(), 0);
+		Writer.AddByteArray("Data", Dummy.data(), Dummy.size());
+	}
+	// TODO: Save entities and block entities
+	Writer.BeginList("Entities", TAG_Compound);
+	Writer.EndList();
+	Writer.BeginList("TileEntities", TAG_Compound);
+	Writer.EndList();
+	Writer.Finish();
+	
+	// Save to file
+	cGZipFile File;
+	if (!File.Open(a_FileName, cGZipFile::fmWrite))
+	{
+		LOG("Cannot open file \"%s\" for writing.", a_FileName.c_str());
+		return false;
+	}
+	if (!File.Write(Writer.GetResult()))
+	{
+		LOG("Cannot write data to file \"%s\".", a_FileName.c_str());
+		return false;
+	}
+	return true;
+}
+
+bool cBlockArea::LoadFromSchematicNBT(cParsedNBT & a_NBT)
+{
+	int TMaterials = a_NBT.FindChildByName(a_NBT.GetRoot(), "Materials");
+	if ((TMaterials > 0) && (a_NBT.GetType(TMaterials) == TAG_String))
+	{
+		AString Materials = a_NBT.GetString(TMaterials);
+		if (Materials.compare("Alpha") != 0)
+		{
+			LOG("Materials tag is present and \"%s\" instead of \"Alpha\". Possibly a wrong-format schematic file.", Materials.c_str());
+			return false;
+		}
+	}
+	int TSizeX = a_NBT.FindChildByName(a_NBT.GetRoot(), "Width");
+	int TSizeY = a_NBT.FindChildByName(a_NBT.GetRoot(), "Height");
+	int TSizeZ = a_NBT.FindChildByName(a_NBT.GetRoot(), "Length");
+	if (
+		(TSizeX < 0) || (TSizeY < 0) || (TSizeZ < 0) ||
+		(a_NBT.GetType(TSizeX) != TAG_Short) ||
+		(a_NBT.GetType(TSizeY) != TAG_Short) ||
+		(a_NBT.GetType(TSizeZ) != TAG_Short)
+	)
+	{
+		LOG("Dimensions are missing from the schematic file (%d, %d, %d), (%d, %d, %d)",
+			TSizeX, TSizeY, TSizeZ,
+			a_NBT.GetType(TSizeX), a_NBT.GetType(TSizeY), a_NBT.GetType(TSizeZ)
+		);
+		return false;
+	}
+	
+	int SizeX = a_NBT.GetShort(TSizeX);
+	int SizeY = a_NBT.GetShort(TSizeY);
+	int SizeZ = a_NBT.GetShort(TSizeZ);
+	if ((SizeX < 1) || (SizeY < 1) || (SizeZ < 1))
+	{
+		LOG("Dimensions are invalid in the schematic file: %d, %d, %d", SizeX, SizeY, SizeZ);
+		return false;
+	}
+	
+	int TBlockTypes = a_NBT.FindChildByName(a_NBT.GetRoot(), "Blocks");
+	int TBlockMetas = a_NBT.FindChildByName(a_NBT.GetRoot(), "Data");
+	if ((TBlockTypes < 0) || (a_NBT.GetType(TBlockTypes) != TAG_ByteArray))
+	{
+		LOG("BlockTypes are invalid in the schematic file: %d", TBlockTypes);
+		return false;
+	}
+	bool AreMetasPresent = (TBlockMetas > 0) && (a_NBT.GetType(TBlockMetas) == TAG_ByteArray);
+	
+	Clear();
+	SetSize(SizeX, SizeY, SizeZ, AreMetasPresent ? (baTypes | baMetas) : baTypes);
+	
+	// Copy the block types and metas:
+	int NumBytes = m_SizeX * m_SizeY * m_SizeZ;
+	if (a_NBT.GetDataLength(TBlockTypes) < NumBytes)
+	{
+		LOG("BlockTypes truncated in the schematic file (exp %d, got %d bytes). Loading partial.",
+			NumBytes, a_NBT.GetDataLength(TBlockTypes)
+		);
+		NumBytes = a_NBT.GetDataLength(TBlockTypes);
+	}
+	memcpy(m_BlockTypes, a_NBT.GetData(TBlockTypes), NumBytes);
+	
+	if (AreMetasPresent)
+	{
+		int NumBytes = m_SizeX * m_SizeY * m_SizeZ;
+		if (a_NBT.GetDataLength(TBlockMetas) < NumBytes)
+		{
+			LOG("BlockMetas truncated in the schematic file (exp %d, got %d bytes). Loading partial.",
+				NumBytes, a_NBT.GetDataLength(TBlockMetas)
+			);
+			NumBytes = a_NBT.GetDataLength(TBlockMetas);
+		}
+		memcpy(m_BlockMetas, a_NBT.GetData(TBlockMetas), NumBytes);
+	}
+	
+	return true;
+}
+
+
-- 
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