1 files changed, 122 insertions, 0 deletions
diff --git a/Minecraft.World/RegionFileCache.cpp b/Minecraft.World/RegionFileCache.cpp
new file mode 100644
index 00000000..c21a6250
--- /dev/null
+++ b/Minecraft.World/RegionFileCache.cpp
@@ -0,0 +1,122 @@
+#include "stdafx.h"
+#include "File.h"
+#include "RegionFileCache.h"
+#include "ConsoleSaveFileIO.h"
+
+RegionFileCache RegionFileCache::s_defaultCache;
+
+bool RegionFileCache::useSplitSaves(ESavePlatform platform)
+{
+	switch(platform)
+	{
+	case SAVE_FILE_PLATFORM_XBONE:
+	case SAVE_FILE_PLATFORM_PS4:
+		return true;
+	default:
+		return false;
+	};
+}
+
+RegionFile *RegionFileCache::_getRegionFile(ConsoleSaveFile *saveFile, const wstring &prefix, int chunkX, int chunkZ)		// 4J - TODO was synchronized
+{
+	// 4J Jev - changed back to use of the File class.
+	//char file[MAX_PATH_SIZE];
+	//sprintf(file,"%s\\region\\r.%d.%d.mcr",basePath,chunkX >> 5,chunkZ >> 5);
+
+	//File regionDir(basePath, L"region");
+
+	//File file(regionDir, wstring(L"r.") + _toString(chunkX>>5) + L"." + _toString(chunkZ>>5) + L".mcr" );
+	MemSect(31);
+	File file;
+	if(useSplitSaves(saveFile->getSavePlatform()))
+	{
+		file = File( prefix + wstring(L"r.") + _toString(chunkX>>4) + L"." + _toString(chunkZ>>4) + L".mcr" );
+	}
+	else
+	{
+		file = File( prefix + wstring(L"r.") + _toString(chunkX>>5) + L"." + _toString(chunkZ>>5) + L".mcr" );
+	}
+	MemSect(0);
+
+	RegionFile *ref = NULL;
+	AUTO_VAR(it, cache.find(file));
+	if( it != cache.end() )
+		ref = it->second;
+
+	// 4J Jev, put back in.
+    if (ref != NULL)
+	{
+		return ref;
+    }
+
+	// 4J Stu - Remove for new save files
+	/*
+    if (!regionDir.exists())
+	{
+        regionDir.mkdirs();
+    }
+	*/
+    if (cache.size() >= MAX_CACHE_SIZE)
+	{
+        _clear();
+    }
+
+	RegionFile *reg = new RegionFile(saveFile, &file);
+    cache[file] = reg;	   // 4J - this was originally a softReferenc
+    return reg;
+
+}
+
+void RegionFileCache::_clear()															// 4J - TODO was synchronized
+{
+	AUTO_VAR(itEnd, cache.end());
+	for( AUTO_VAR(it, cache.begin()); it != itEnd; it++ )
+	{
+		// 4J - removed try/catch
+//        try {
+        RegionFile *regionFile = it->second;
+        if (regionFile != NULL)
+		{
+            regionFile->close();
+        }
+		delete regionFile;
+//        } catch (IOException e) {
+//            e.printStackTrace();
+//        }	
+	}
+	cache.clear();
+}
+
+int RegionFileCache::_getSizeDelta(ConsoleSaveFile *saveFile, const wstring &prefix, int chunkX, int chunkZ)
+{
+    RegionFile *r = _getRegionFile(saveFile, prefix, chunkX, chunkZ);
+    return r->getSizeDelta();
+}
+
+DataInputStream *RegionFileCache::_getChunkDataInputStream(ConsoleSaveFile *saveFile, const wstring &prefix, int chunkX, int chunkZ)
+{
+	RegionFile* r = _getRegionFile(saveFile, prefix, chunkX, chunkZ);
+	if(useSplitSaves(saveFile->getSavePlatform()))
+	{
+		return r->getChunkDataInputStream(chunkX & 15, chunkZ & 15);
+	}
+	else
+	{
+
+		return r->getChunkDataInputStream(chunkX & 31, chunkZ & 31);
+	}
+}
+
+DataOutputStream *RegionFileCache::_getChunkDataOutputStream(ConsoleSaveFile *saveFile, const wstring &prefix, int chunkX, int chunkZ)
+{
+	RegionFile* r = _getRegionFile(saveFile, prefix, chunkX, chunkZ);
+	if(useSplitSaves(saveFile->getSavePlatform()))
+	{
+		return r->getChunkDataOutputStream(chunkX & 15, chunkZ & 15);
+	}
+	else
+	{
+
+		return r->getChunkDataOutputStream(chunkX & 31, chunkZ & 31);
+	}
+}