first commit

Minecraft.World/RegionFile.h

@@ -0,0 +1,97 @@
+#pragma once
+#include "compression.h"
+#include "InputOutputStream.h"
+using namespace std;
+
+class FileEntry;
+class ConsoleSaveFile;
+
+class RegionFile
+{
+// 4J Stu TEMP FOR TESTING
+private:
+	FileEntry *fileEntry;
+
+private:
+	static const int VERSION_GZIP = 1;
+    static const int VERSION_DEFLATE = 2;
+	static const int VERSION_XBOX = 3;
+	
+    static const int SECTOR_BYTES = 4096;
+    static const int SECTOR_INTS = SECTOR_BYTES / 4;
+
+    static const int CHUNK_HEADER_SIZE = 8;
+	static byteArray emptySector;
+
+	File *fileName;
+	//HANDLE file;
+	ConsoleSaveFile *m_saveFile;
+
+	int *offsets;
+	int *chunkTimestamps;
+	vector<bool> *sectorFree;
+	int sizeDelta;
+	__int64 _lastModified;
+	bool m_bIsEmpty;			// 4J added
+
+public:
+    RegionFile(ConsoleSaveFile *saveFile, File *path);
+	~RegionFile();
+
+    /* the modification date of the region file when it was first opened */
+    __int64 lastModified();
+
+    /* gets how much the region file has grown since it was last checked */
+    int getSizeDelta();
+
+    /*
+     * gets an (uncompressed) stream representing the chunk data returns null if
+     * the chunk is not found or an error occurs
+     */
+    DataInputStream *getChunkDataInputStream(int x, int z);
+    DataOutputStream *getChunkDataOutputStream(int x, int z);
+
+	class ChunkBuffer : public ByteArrayOutputStream
+	{
+	private:
+		RegionFile *rf;
+		int x, z;
+	public:
+		ChunkBuffer( RegionFile *rf, int x, int z ) : ByteArrayOutputStream(8096)
+		{
+			this->rf = rf;
+			this->x = x;
+			this->z = z;
+		}
+		void close()
+		{
+			rf->write(x,z,buf.data,count);
+		}
+	};
+
+    /* write a chunk at (x,z) with length bytes of data to disk */
+protected:
+    void write(int x, int z, byte *data, int length);
+
+    /* write a chunk data to the region file at specified sector number */
+private:
+    void write(int sectorNumber, byte *data, int length, unsigned int compLength);
+	void zero(int sectorNumber, int length);	// 4J added
+
+    /* is this an invalid chunk coordinate? */
+    bool outOfBounds(int x, int z);
+
+    int getOffset(int x, int z);
+
+public:
+    bool hasChunk(int x, int z);
+
+private:
+	void insertInitialSectors();		// 4J added
+    void setOffset(int x, int z, int offset);
+    void setTimestamp(int x, int z, int value);
+
+public:
+	void writeAllOffsets();
+    void close();
+};