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this breaks old file version system by simply ignoring the old files.

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This commit is contained in:
cola98765
2021-09-16 11:41:53 +02:00
parent b5f32705e8
commit 6bf9e187e0
4 changed files with 90 additions and 132 deletions
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src/main/java/com/seibel/lod/handlers/LodDimensionFileHandler.java
+57 -91
View File
@@ -17,11 +17,7 @@
*/
package com.seibel.lod.handlers;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.io.*;
import java.nio.file.Files;
import java.nio.file.StandardCopyOption;
import java.util.concurrent.ExecutorService;
@@ -57,7 +53,7 @@ public class LodDimensionFileHandler
/**
* .txt
*/
private static final String FILE_EXTENSION = ".txt";
private static final String FILE_EXTENSION = ".dat";
/**
* detail-#
*/
@@ -79,11 +75,6 @@ public class LodDimensionFileHandler
*/
public static final int LOD_SAVE_FILE_VERSION = 6;
/**
* This is the string written before the file version
*/
private static final String LOD_FILE_VERSION_PREFIX = "lod_save_file_version";
/**
* Allow saving asynchronously, but never try to save multiple regions
* at a time
@@ -140,66 +131,50 @@ public class LodDimensionFileHandler
// return anything
continue;
}
String data = "";
BufferedReader bufferedReader = new BufferedReader(new FileReader(f));
data = bufferedReader.readLine();
int fileVersion = -1;
byte data[] = {0};
long dataSize = f.length();
dataSize -= 1;
if (dataSize > 0) {
try (InputStream inputStream = new BufferedInputStream(new FileInputStream(f))) {
int fileVersion = -1;
fileVersion = inputStream.read();
// check if this file can be read by this file handler
if (fileVersion < LOD_SAVE_FILE_VERSION) {
// the file we are reading is an older version,
// close the reader and delete the file.
inputStream.close();
f.delete();
ClientProxy.LOGGER.info("Outdated LOD region file for region: (" + regionX + "," + regionZ + ") version found: " + fileVersion +
", version requested: " + LOD_SAVE_FILE_VERSION +
" File was been deleted.");
if (data != null && !data.isEmpty())
{
// try to get the file version
try
{
fileVersion = Integer.parseInt(data.substring(data.indexOf(' ')).trim());
} catch (NumberFormatException | StringIndexOutOfBoundsException e)
{
// this file doesn't have a version
// keep the version as -1
fileVersion = -1;
break;
} else if (fileVersion > LOD_SAVE_FILE_VERSION) {
// the file we are reading is a newer version,
// close the reader and ignore the file, we don't
// want to accidently delete anything the user may want.
inputStream.close();
ClientProxy.LOGGER.info("Newer LOD region file for region: (" + regionX + "," + regionZ + ") version found: " + fileVersion +
", version requested: " + LOD_SAVE_FILE_VERSION +
" this region will not be written to in order to protect the newer file.");
break;
}
// this file is a readable version, begin reading the file
data = new byte[(int) dataSize];
inputStream.read(data);
inputStream.close();
} catch (IOException ex) {
ex.printStackTrace();
}
// check if this file can be read by this file handler
if (fileVersion < LOD_SAVE_FILE_VERSION)
{
// the file we are reading is an older version,
// close the reader and delete the file.
bufferedReader.close();
f.delete();
ClientProxy.LOGGER.info("Outdated LOD region file for region: (" + regionX + "," + regionZ + ") version found: " + fileVersion +
", version requested: " + LOD_SAVE_FILE_VERSION +
" File was been deleted.");
break;
} else if (fileVersion > LOD_SAVE_FILE_VERSION)
{
// the file we are reading is a newer version,
// close the reader and ignore the file, we don't
// want to accidently delete anything the user may want.
bufferedReader.close();
ClientProxy.LOGGER.info("Newer LOD region file for region: (" + regionX + "," + regionZ + ") version found: " + fileVersion +
", version requested: " + LOD_SAVE_FILE_VERSION +
" this region will not be written to in order to protect the newer file.");
break;
}
} else
{
// there is no data in this file
bufferedReader.close();
break;
}
// this file is a readable version, begin reading the file
data = bufferedReader.readLine();
bufferedReader.close();
switch (region.getLodQualityMode()){
default:
case HEIGHTMAP:
region.addLevel(new SingleLevelContainer(data));
break;
case MULTI_LOD:
region.addLevel(new VerticalLevelContainer(data));
//region.addLevel(new VerticalLevelContainer(data));
break;
}
//region.addLevel(new SingleLevelContainer(data));
@@ -293,25 +268,13 @@ public class LodDimensionFileHandler
// is the correct version.
// (to make sure we don't overwrite a newer
// version file if it exists)
BufferedReader br = new BufferedReader(new FileReader(oldFile));
String s = br.readLine();
int fileVersion = LOD_SAVE_FILE_VERSION;
if (s != null && !s.isEmpty())
{
// try to get the file version
try
{
fileVersion = Integer.parseInt(s.substring(s.indexOf(' ')).trim());
} catch (NumberFormatException | StringIndexOutOfBoundsException e)
{
// this file doesn't have a correctly formated version
// just overwrite the file
}
try (InputStream inputStream = new BufferedInputStream(new FileInputStream(oldFile))) {
fileVersion = inputStream.read();
inputStream.close();
} catch (IOException ex) {
ex.printStackTrace();
}
br.close();
// check if this file can be written to by the file handler
if (fileVersion <= LOD_SAVE_FILE_VERSION)
{
@@ -327,17 +290,20 @@ public class LodDimensionFileHandler
// the old file is good, now create a new save file
File newFile = new File(fileName + TMP_FILE_EXTENSION);
FileWriter fw = new FileWriter(newFile);
try (OutputStream outputStream = new BufferedOutputStream(new FileOutputStream(newFile));) {
// add the version of this file
fw.write(LOD_FILE_VERSION_PREFIX + " " + LOD_SAVE_FILE_VERSION + "\n");
// add the version of this file
outputStream.write(LOD_SAVE_FILE_VERSION);
// add each LodChunk to the file
fw.write(region.getLevel(detailLevel).toDataString());
fw.close();
// add each LodChunk to the file
outputStream.write(region.getLevel(detailLevel).toDataString());
outputStream.close();
// overwrite the old file with the new one
Files.move(newFile.toPath(), oldFile.toPath(), StandardCopyOption.ATOMIC_MOVE, StandardCopyOption.REPLACE_EXISTING);
// overwrite the old file with the new one
Files.move(newFile.toPath(), oldFile.toPath(), StandardCopyOption.ATOMIC_MOVE, StandardCopyOption.REPLACE_EXISTING);
}catch (IOException ex) {
ex.printStackTrace();
}
} catch (Exception e)
{
ClientProxy.LOGGER.error("LOD file write error. Unable to write to [" + fileName + "] error [" + e.getMessage() + "]: ");
@@ -370,10 +336,10 @@ public class LodDimensionFileHandler
// or
// ".\Super Flat\data"
return dimensionDataSaveFolder.getCanonicalPath() + File.separatorChar +
lodQualityMode + File.separatorChar +
generationMode.toString() + File.separatorChar +
DETAIL_FOLDER_NAME_PREFIX + detailLevel + File.separatorChar +
FILE_NAME_PREFIX + "." + regionX + "." + regionZ + FILE_EXTENSION;
lodQualityMode + File.separatorChar +
generationMode.toString() + File.separatorChar +
DETAIL_FOLDER_NAME_PREFIX + detailLevel + File.separatorChar +
FILE_NAME_PREFIX + "." + regionX + "." + regionZ + FILE_EXTENSION;
} catch (IOException | SecurityException e)
{
ClientProxy.LOGGER.warn("Unable to get the filename for the region [" + regionX + ", " + regionZ + "], error: [" + e.getMessage() + "], stacktrace: ");