com.fuxi.javaagent.contentobjects.jnotify.win32.JNotify_win32 Maven / Gradle / Ivy

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/*******************************************************************************
 * JNotify - Allow java applications to register to File system events.
 *
 * Copyright (C) 2005 - Content Objects
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 *
 ******************************************************************************
 *
 * You may also redistribute and/or modify this library under the terms of the
 * Eclipse Public License. See epl.html.
 *
 ******************************************************************************
 *
 * Content Objects, Inc., hereby disclaims all copyright interest in the
 * library `JNotify' (a Java library for file system events).
 *
 * Yahali Sherman, 21 November 2005
 *    Content Objects, VP R&D.
 *
 ******************************************************************************
 * Author : Omry Yadan
 ******************************************************************************/


package com.fuxi.javaagent.contentobjects.jnotify.win32;

import com.fuxi.javaagent.contentobjects.jnotify.JNotifyException;
import com.fuxi.javaagent.contentobjects.jnotify.Observer;

import java.util.ArrayList;
import java.util.List;


public class JNotify_win32 {
    static {
//        try {
//            String libName = null;
//            if (System.getProperty("os.arch").equals("amd64")) {
//                libName = "jnotify_64bit.dll";
//            } else {
//                libName = "jnotify.dll";
//            }
//            String path = URLDecoder.decode(JNotify_linux.class.getResource("/" + libName).getFile().replace("+", "%2B")
//                    , "UTF-8");
//            System.load(path);
//        } catch (UnsatisfiedLinkError e) {
//            e.printStackTrace();
//        } catch (UnsupportedEncodingException e) {
//            e.printStackTrace();
//        }
        int res = nativeInit();
        if (res != 0) {
            throw new RuntimeException("Error initialiing native library. (#" + res + ")");
        }
    }

    public static final int FILE_NOTIFY_CHANGE_FILE_NAME = 0x00000001;
    public static final int FILE_NOTIFY_CHANGE_DIR_NAME = 0x00000002;
    public static final int FILE_NOTIFY_CHANGE_ATTRIBUTES = 0x00000004;
    public static final int FILE_NOTIFY_CHANGE_SIZE = 0x00000008;
    public static final int FILE_NOTIFY_CHANGE_LAST_WRITE = 0x00000010;
    public static final int FILE_NOTIFY_CHANGE_LAST_ACCESS = 0x00000020;
    public static final int FILE_NOTIFY_CHANGE_CREATION = 0x00000040;
    public static final int FILE_NOTIFY_CHANGE_SECURITY = 0x00000100;

    // Event action ids
    public static final int FILE_ACTION_ADDED = 0x00000001;
    public static final int FILE_ACTION_REMOVED = 0x00000002;
    public static final int FILE_ACTION_MODIFIED = 0x00000003;
    public static final int FILE_ACTION_RENAMED_OLD_NAME = 0x00000004;
    public static final int FILE_ACTION_RENAMED_NEW_NAME = 0x00000005;

    public static List list=new ArrayList();
    public static String msg;

    private static native int nativeInit();

    private static native int nativeAddWatch(String path, long mask, boolean watchSubtree);

    private static native String getErrorDesc(long errorCode);

    private static native void nativeRemoveWatch(int wd);

    private static IWin32NotifyListener _notifyListener;

    public static void registerObserver(Observer o){
        list.add(o);
    }
    public static void notifyObserver(){
        for (Observer o: list) {
            o.update(msg);
        }
    }

    public static void setInfomation(int error) {
       JNotify_win32.msg =  getErrorDesc(error);
        notifyObserver();
    }

    public static int addWatch(String path, long mask, boolean watchSubtree) throws JNotifyException {
        int wd = nativeAddWatch(path, mask, watchSubtree);
        if (wd < 0) {
            throw new JNotifyException_win32(getErrorDesc(-wd) + " : " + path, -wd);
        }
        return wd;
    }


    public static void removeWatch(int wd) {
        nativeRemoveWatch(wd);
    }


    public static void callbackProcessEvent(int wd, int action, String rootPath, String filePath) {
        if (_notifyListener != null) {
            _notifyListener.notifyChange(wd, action, rootPath, filePath);
        }
    }

    public static void setNotifyListener(IWin32NotifyListener notifyListener) {
        if (_notifyListener == null) {
            _notifyListener = notifyListener;
        } else {
            throw new RuntimeException("Notify listener is already set. multiple notify listeners are not supported.");
        }
    }
}