/*
* Copyright (c) 2008-2019 Emmanuel Dupuy.
* This project is distributed under the GPLv3 license.
* This is a Copyleft license that gives the user the right to use,
* copy and modify the code freely for non-commercial purposes.
*/
package org.jd.gui.service.treenode;
import org.jd.gui.api.API;
import org.jd.gui.api.feature.ContainerEntryGettable;
import org.jd.gui.api.feature.UriGettable;
import org.jd.gui.api.model.Container;
import org.jd.gui.util.exception.ExceptionUtil;
import org.jd.gui.view.component.DynamicPage;
import org.jd.gui.view.data.TreeNodeBean;
import javax.swing.*;
import javax.swing.tree.DefaultMutableTreeNode;
import java.io.EOFException;
import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.util.regex.Pattern;
public class ClassFileTreeNodeFactoryProvider extends AbstractTypeFileTreeNodeFactoryProvider {
protected static final ImageIcon CLASS_FILE_ICON = new ImageIcon(ClassFileTreeNodeFactoryProvider.class.getClassLoader().getResource("org/jd/gui/images/classf_obj.png"));
protected static final Factory FACTORY = new Factory();
static {
// Early class loading
try {
Class.forName(DynamicPage.class.getName());
} catch (Exception e) {
assert ExceptionUtil.printStackTrace(e);
}
}
@Override public String[] getSelectors() { return appendSelectors("*:file:*.class"); }
@Override
public Pattern getPathPattern() {
if (externalPathPattern == null) {
return Pattern.compile("^((?!module-info\\.class).)*$");
} else {
return externalPathPattern;
}
}
@Override
@SuppressWarnings("unchecked")
public <T extends DefaultMutableTreeNode & ContainerEntryGettable & UriGettable> T make(API api, Container.Entry entry) {
int lastSlashIndex = entry.getPath().lastIndexOf('/');
String label = entry.getPath().substring(lastSlashIndex+1);
return (T)new FileTreeNode(entry, new TreeNodeBean(label, CLASS_FILE_ICON), FACTORY);
}
protected static class Factory implements AbstractTypeFileTreeNodeFactoryProvider.PageAndTipFactory {
@Override
@SuppressWarnings("unchecked")
public <T extends JComponent & UriGettable> T makePage(API a, Container.Entry e) {
return (T)new DynamicPage(a, e);
}
@Override
public String makeTip(API api, Container.Entry entry) {
String location = new File(entry.getUri()).getPath();
StringBuilder tip = new StringBuilder("<html>Location: ");
tip.append(location);
tip.append("<br>Java compiler version: ");
try (InputStream is = entry.getInputStream()) {
is.skip(4); // Skip magic number
int minorVersion = readUnsignedShort(is);
int majorVersion = readUnsignedShort(is);
if (majorVersion >= 49) {
tip.append(majorVersion - (49-5));
} else if (majorVersion >= 45) {
tip.append("1.");
tip.append(majorVersion - (45-1));
}
tip.append(" (");
tip.append(majorVersion);
tip.append('.');
tip.append(minorVersion);
tip.append(')');
} catch (IOException e) {
assert ExceptionUtil.printStackTrace(e);
}
tip.append("</html>");
return tip.toString();
}
/**
* @see java.io.DataInputStream#readUnsignedShort()
*/
protected int readUnsignedShort(InputStream is) throws IOException {
int ch1 = is.read();
int ch2 = is.read();
if ((ch1 | ch2) < 0)
throw new EOFException();
return (ch1 << 8) + (ch2 << 0);
}
}
}