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Minor optimizations

This commit is contained in:
Reinhard Pointner 2016-10-07 01:46:37 +08:00
parent 297a69be33
commit f7d45346fd
1 changed files with 54 additions and 32 deletions
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86
source/net/filebot/util/FastFile.java
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@ -5,18 +5,24 @@ import static java.util.Arrays.*;
import java.io.File;
import java.io.FileFilter;
import java.io.IOException;
import java.util.BitSet;
public class FastFile extends File {
private String name;
private Long length;
private Long lastModified;
private Boolean isDirectory;
private Boolean isFile;
private Boolean isHidden;
private static final long UNDEFINED = -1;
private Long totalSpace;
private Long freeSpace;
public static final int HIDDEN = 0;
public static final int DIRECTORY = 1;
public static final int FILE = 2;
private BitSet stats;
private String name;
private long length = UNDEFINED;
private long lastModified = UNDEFINED;
private long totalSpace = UNDEFINED;
private long freeSpace = UNDEFINED;
private String[] list;
private File[] listFiles;
@ -32,6 +38,37 @@ public class FastFile extends File {
super(parent, child);
}
public boolean stats(int bitIndex) {
if (stats == null) {
stats = new BitSet(3);
stats.set(HIDDEN, super.isHidden());
if (super.isFile()) {
stats.set(FILE);
} else if (super.isDirectory()) {
stats.set(DIRECTORY);
}
}
return stats.get(bitIndex);
}
@Override
public boolean isDirectory() {
return stats(DIRECTORY);
}
@Override
public boolean isFile() {
return stats(FILE);
}
@Override
public boolean isHidden() {
return stats(HIDDEN);
}
@Override
public String getName() {
return name != null ? name : (name = super.getName());
@ -39,27 +76,12 @@ public class FastFile extends File {
@Override
public long length() {
return length != null ? length : (length = super.length());
}
@Override
public boolean isDirectory() {
return isDirectory != null ? isDirectory : (isDirectory = super.isDirectory());
}
@Override
public boolean isFile() {
return isFile != null ? isFile : (isFile = super.isFile());
}
@Override
public boolean isHidden() {
return isHidden != null ? isHidden : (isHidden = super.isHidden());
return length != UNDEFINED ? length : (length = super.length());
}
@Override
public long lastModified() {
return lastModified != null ? lastModified : (lastModified = super.lastModified());
return lastModified != UNDEFINED ? lastModified : (lastModified = super.lastModified());
}
@Override
@ -122,17 +144,17 @@ public class FastFile extends File {
@Override
public long getTotalSpace() {
return totalSpace != null ? totalSpace : (totalSpace = super.getTotalSpace());
}
@Override
public long getFreeSpace() {
return freeSpace != null ? freeSpace : (freeSpace = super.getFreeSpace());
return totalSpace != UNDEFINED ? totalSpace : (totalSpace = super.getTotalSpace());
}
@Override
public long getUsableSpace() {
return freeSpace != null ? freeSpace : (freeSpace = super.getFreeSpace());
return freeSpace != UNDEFINED ? freeSpace : (freeSpace = super.getUsableSpace());
}
@Override
public long getFreeSpace() {
return freeSpace != UNDEFINED ? freeSpace : (freeSpace = super.getUsableSpace());
}
@Override