001/*******************************************************************************
002 * Copyright (C) 2009-2011 FuseSource Corp.
003 * Copyright (c) 2004, 2007 IBM Corporation and others.
004 *
005 * All rights reserved. This program and the accompanying materials
006 * are made available under the terms of the Eclipse Public License v1.0
007 * which accompanies this distribution, and is available at
008 * http://www.eclipse.org/legal/epl-v10.html
009 *
010 *******************************************************************************/
011package org.fusesource.hawtjni.generator;
012
013import java.lang.reflect.Modifier;
014import java.util.Collection;
015import java.util.List;
016
017import org.fusesource.hawtjni.generator.model.JNIClass;
018import org.fusesource.hawtjni.generator.model.JNIField;
019import org.fusesource.hawtjni.generator.model.ReflectClass;
020
021/**
022 * 
023 * @author <a href="http://hiramchirino.com">Hiram Chirino</a>
024 */
025public class CleanupConstants extends CleanupClass {
026
027    String getFieldValue(JNIField field) {
028        String name = field.getName();
029        int index = 0;
030        while (true) {
031            index = classSource.indexOf(name, index + 1);
032            if (index == -1)
033                return null;
034            int equalsIndex = classSource.indexOf("=", index);
035            if (classSource.substring(index + name.length(), equalsIndex).trim().length() == 0) {
036                int semiIndex = classSource.indexOf(";", equalsIndex);
037                return classSource.substring(equalsIndex + 1, semiIndex).trim();
038            }
039        }
040    }
041
042    public void generate(JNIClass clazz) {
043        unusedCount = usedCount = 0;
044        super.generate(clazz);
045        List<JNIField> fields = clazz.getDeclaredFields();
046        generate(fields);
047        output("used=" + usedCount + " unused=" + unusedCount + " total=" + (unusedCount + usedCount));
048    }
049
050    public void generate(List<JNIField> fields) {
051        sortFields(fields);
052        for (JNIField field : fields) {
053            if ((field.getModifiers() & Modifier.FINAL) == 0)
054                continue;
055            generate(field);
056        }
057    }
058
059    public void generate(JNIField field) {
060        String name = field.getName();
061        Collection<String> values = files.values();
062        for (String str : values) {
063            if (str.indexOf(name) != -1) {
064                int modifiers = field.getModifiers();
065                String modifiersStr = Modifier.toString(modifiers);
066                output("\t");
067                output(modifiersStr);
068                if (modifiersStr.length() > 0)
069                    output(" ");
070                output(field.getType().getTypeSignature3(false));
071                output(" ");
072                output(field.getName());
073                output(" = ");
074                output(getFieldValue(field));
075                outputln(";");
076                usedCount++;
077                return;
078            }
079        }
080        unusedCount++;
081        // output("NOT USED=" + field.toString() + " \n");
082    }
083
084    public static void main(String[] args) {
085        if (args.length < 3) {
086            System.out.println("Usage: java CleanupConstants <OS className> <class source> <src path1> <src path2>");
087            return;
088        }
089        try {
090            CleanupConstants gen = new CleanupConstants();
091            String clazzName = args[0];
092            String classSource = args[1];
093            String[] sourcePath = new String[args.length - 2];
094            System.arraycopy(args, 2, sourcePath, 0, sourcePath.length);
095            Class<?> clazz = Class.forName(clazzName);
096            gen.setSourcePath(sourcePath);
097            gen.setClassSourcePath(classSource);
098            gen.generate(new ReflectClass(clazz));
099        } catch (Exception e) {
100            System.out.println("Problem");
101            e.printStackTrace(System.out);
102        }
103    }
104
105}