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LibraryDatabase.java
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LibraryDatabase.java
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/**
* Copyright (c) 2011-2015, SpaceToad and the BuildCraft Team
* http://www.mod-buildcraft.com
*
* BuildCraft is distributed under the terms of the Minecraft Mod Public
* License 1.0, or MMPL. Please check the contents of the license located in
* http://www.mod-buildcraft.com/MMPL-1.0.txt
*/
package buildcraft.builders;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.FilenameFilter;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Locale;
import java.util.Set;
import java.util.TreeSet;
import net.minecraft.nbt.NBTTagCompound;
import buildcraft.api.core.BCLog;
import buildcraft.api.library.LibraryAPI;
import buildcraft.core.blueprints.LibraryId;
import buildcraft.core.lib.utils.NBTUtils;
public class LibraryDatabase {
private static final int PAGE_SIZE = 12;
protected Set<LibraryId> blueprintIds;
protected LibraryId[] pages = new LibraryId[0];
private File outputDir;
private File[] inputDirs;
/**
* Initialize the blueprint database.
*
* @param inputPaths directories to read the blueprints from.
*/
public void init(String[] inputPaths, String outputPath) {
outputDir = new File(outputPath);
if (!outputDir.exists()) {
outputDir.mkdirs();
}
inputDirs = new File[inputPaths.length];
for (int i = 0; i < inputDirs.length; ++i) {
inputDirs[i] = new File(inputPaths[i]);
}
refresh();
}
public void refresh() {
blueprintIds = new TreeSet<LibraryId>();
loadIndex(inputDirs);
}
public void deleteBlueprint (LibraryId id) {
File blueprintFile = getBlueprintFile(id);
if (blueprintFile != null) {
blueprintFile.delete();
blueprintIds.remove(id);
pages = new LibraryId[blueprintIds.size()];
pages = blueprintIds.toArray(pages);
}
}
protected File getBlueprintFile(LibraryId id) {
String name = String.format(Locale.ENGLISH, "%s." + id.extension, id.toString());
for (File dir : inputDirs) {
File f = new File(dir, name);
if (f.exists()) {
return f;
}
}
return null;
}
protected File getBlueprintOutputFile(LibraryId id) {
String name = String.format(Locale.ENGLISH, "%s." + id.extension, id.toString());
return new File(outputDir, name);
}
public void add(LibraryId base, NBTTagCompound compound) {
save(base, compound);
if (!blueprintIds.contains(base)) {
blueprintIds.add(base);
pages = blueprintIds.toArray(pages);
}
}
private void save(LibraryId base, NBTTagCompound compound) {
byte[] data = NBTUtils.save(compound);
base.generateUniqueId(data);
File blueprintFile = getBlueprintOutputFile(base);
System.out.println(blueprintFile.getName() + " - " + data.length);
if (!blueprintFile.exists()) {
try {
FileOutputStream f = new FileOutputStream(blueprintFile);
f.write(data);
f.close();
} catch (IOException ex) {
BCLog.logger.error(String.format("Failed to save library file: %s %s", blueprintFile.getName(), ex.getMessage()));
}
}
}
private void loadIndex(File[] dirs) {
for (File dir : dirs) {
if (dir != null) {
loadIndex(dir);
}
}
}
private void loadIndex(File directory) {
FilenameFilter filter = new FilenameFilter() {
@Override
public boolean accept(File dir, String name) {
int dotIndex = name.lastIndexOf('.') + 1;
String extension = name.substring(dotIndex);
return LibraryAPI.getHandlerFor(extension) != null;
}
};
if (directory.exists()) {
File[] files = directory.listFiles(filter);
if (files == null || files.length == 0) {
return;
}
for (File blueprintFile : files) {
String fileName = blueprintFile.getName();
LibraryId id = new LibraryId();
int sepIndex = fileName.lastIndexOf(LibraryId.BPT_SEP_CHARACTER);
int dotIndex = fileName.lastIndexOf('.');
if (dotIndex > 0) {
String extension = fileName.substring(dotIndex + 1);
if (sepIndex > 0) {
String prefix = fileName.substring(0, sepIndex);
String suffix = fileName.substring(sepIndex + 1);
id.name = prefix;
id.uniqueId = LibraryId.toBytes(suffix.substring(0, suffix.length() - (extension.length() + 1)));
} else {
id.name = fileName.substring(0, dotIndex);
id.uniqueId = new byte[0];
}
id.extension = extension;
if (!blueprintIds.contains(id)) {
blueprintIds.add(id);
}
} else {
BCLog.logger.warn("Found incorrectly named (no extension) blueprint file: '%s'!", fileName);
}
}
pages = blueprintIds.toArray(new LibraryId[blueprintIds.size()]);
}
}
public boolean exists (LibraryId id) {
return blueprintIds.contains(id);
}
public NBTTagCompound load(final LibraryId id) {
if (id == null) {
return null;
}
NBTTagCompound compound = load(getBlueprintFile(id));
return compound;
}
public static NBTTagCompound load (File blueprintFile) {
if (blueprintFile != null && blueprintFile.exists()) {
try {
FileInputStream f = new FileInputStream(blueprintFile);
byte [] data = new byte [(int) blueprintFile.length()];
f.read (data);
f.close();
return NBTUtils.load(data);
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
return null;
}
public ArrayList<LibraryId> getPage (int pageId) {
ArrayList<LibraryId> result = new ArrayList<LibraryId>();
if (pageId < 0) {
return result;
}
for (int i = pageId * PAGE_SIZE; i < pageId * PAGE_SIZE + PAGE_SIZE; ++i) {
if (i < pages.length) {
result.add(pages [i]);
} else {
break;
}
}
return result;
}
public int getPageNumber () {
return (int) Math.ceil((float) blueprintIds.size() / (float) PAGE_SIZE);
}
}