/* *  Copyright (c) 2001 Sun Microsystems, Inc.  All rights *  reserved. * *  Redistribution and use in source and binary forms, with or without *  modification, are permitted provided that the following conditions *  are met: * *  1. Redistributions of source code must retain the above copyright *  notice, this list of conditions and the following disclaimer. * *  2. Redistributions in binary form must reproduce the above copyright *  notice, this list of conditions and the following disclaimer in *  the documentation and/or other materials provided with the *  distribution. * *  3. The end-user documentation included with the redistribution, *  if any, must include the following acknowledgment: *  "This product includes software developed by the *  Sun Microsystems, Inc. for Project JXTA." *  Alternately, this acknowledgment may appear in the software itself, *  if and wherever such third-party acknowledgments normally appear. * *  4. The names "Sun", "Sun Microsystems, Inc.", "JXTA" and "Project JXTA" *  must not be used to endorse or promote products derived from this *  software without prior written permission. For written *  permission, please contact Project JXTA at http://www.jxta.org. * *  5. Products derived from this software may not be called "JXTA", *  nor may "JXTA" appear in their name, without prior written *  permission of Sun. * *  THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED *  WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES *  OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE *  DISCLAIMED.  IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR *  ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, *  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT *  LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF *  USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND *  ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, *  OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT *  OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF *  SUCH DAMAGE. *  ==================================================================== * *  This software consists of voluntary contributions made by many *  individuals on behalf of Project JXTA.  For more *  information on Project JXTA, please see *  <http://www.jxta.org/>. * *  This license is based on the BSD license adopted by the Apache Foundation. * *  $Id: DataManager.java,v 1.1 2006/06/13 07:02:30 nano Exp $ */package net.jxta.myjxta.misc.beam;//package  net.java.netbeams.store;import java.io.File;import java.io.FileInputStream;import java.io.FileOutputStream;import java.io.InputStream;import java.net.URL;import java.util.Properties;public final class DataManager {    public static long lastModified(String path) {        try {            File f = new File(path);            if (f.exists()) return f.lastModified();        } catch (Exception e) {            e.printStackTrace();        }        return 0L;    }    public static void prepDirectory(String pathname) {        // make sure the file path up to last slash exists        String dirname = pathname.substring(0, pathname.lastIndexOf('/'));        if (dirname != null && dirname.length() >= 0) {            try {                File dir = new File(dirname);                if (!dir.exists()) dir.mkdirs();            } catch (Exception e) {            }        }    }    public static boolean fileExists(String path) {        boolean result = false;        try {            File f = new File(path);            if (f.exists()) result = true;        } catch (Exception e) {            e.printStackTrace();        }        return result;    }    public static Properties retrieveProperties(String path) {        Properties props = null;        try {            File ftmp = new File(path);            if (!ftmp.exists()) return null;            props = new Properties();            FileInputStream fin = new FileInputStream(path);            props.load(fin);            fin.close();        } catch (Exception e) {            e.printStackTrace();            return null;        }        return props;    }    public static Properties retrieveURLProperties(String urlstr) {        Properties props = null;        try {            URL url = new URL(urlstr);            props = new Properties();            InputStream urlin = url.openStream();            props.load(urlin);            urlin.close();        } catch (Exception e) {            e.printStackTrace();            return null;        }        return props;    }    public static String retrieveFile(String filename) {        String result = null;        try {            File file = new File(filename);            if (!file.exists()) return null;            int len = (int) file.length();            if (len >= 0) {                byte[] buf = new byte[len];                FileInputStream in = new FileInputStream(file);                int nbytes = 0;                int index = 0;                while (nbytes >= 0 && index < len) {                    nbytes = in.read(buf, index, len - index);                    index += nbytes;                }                in.close();                result = new String(buf);            }        } catch (Exception e) {            e.printStackTrace();        }        return result;    }    public static String retrieveURLFile(String urlstr) {        String result = null;        try {            URL url = new URL(urlstr);            byte[] buf = new byte[8192]; //start with 8kb buffer            InputStream in = url.openStream();            int nbytes = 0;            int index = 0;            while (nbytes >= 0 && index < buf.length) {                nbytes = in.read(buf, index, buf.length - index);                if (nbytes > 0) {                    index += nbytes;                    if (index == buf.length) {                        byte[] newbuf = new byte[2 * buf.length];                        System.arraycopy(buf, 0, newbuf, 0, index);                        buf = newbuf;                    }                }            }            in.close();            result = new String(buf, 0, 0, index);        } catch (Exception e) {            e.printStackTrace();        }        return result;    }    public static void saveProperties(Properties props, String path) {        if (props != null) {            try {                File file = new File(path);                if (file.exists()) {                    file.renameTo(new File(path + ".bak"));                } else {                    prepDirectory(path);                }                props.store(new FileOutputStream(path), "RSVP entry properties");            } catch (Exception e) {                e.printStackTrace();            }        }    }    public static synchronized void saveToFile(String data, String path) {        try {            File file = new File(path);            if (file.exists()) {                file.renameTo(new File(path + ".bak"));            } else {                prepDirectory(path);            }            FileOutputStream out = new FileOutputStream(path, false);            out.write(data.getBytes());            out.flush();            out.close();        } catch (Exception e) {            e.printStackTrace();        }    }    public static Properties[] getAllProperties(String path) {        return getAllProperties(path, Defs.PROPERTIES_FILE);    }    public static Properties[] getAllProperties(String path, String fname) {        File dir = new File(path);        String[] entries = dir.list();        if (entries != null && entries.length > 0) {            Properties[] props = new Properties[entries.length];            for (int i = 0; i < props.length; i++) {                props[i] = retrieveProperties(path + "/"                        + entries[i] + "/" + fname);            }            return props;        }        return null;    }    public static String[] getAllEntries(String path, String fname) {        String[] dirs = getAllEntries(path);        if (dirs != null && dirs.length > 0) {            String[] entries = new String[dirs.length];            for (int i = 0; i < entries.length; i++) {                entries[i] = retrieveFile(path + "/"                        + dirs[i] + "/" + fname);            }            return entries;        }        return null;    }    public static String[] getAllEntries(String path) {        File dir = new File(path);        String[] entries = dir.list();        return entries;    }    public static synchronized void delete(String dir, String trashdir) {        try {            File src = new File(dir);            File dest = new File(trashdir);            src.renameTo(dest);        } catch (Exception e) {            e.printStackTrace();        }    }    public static String canonicalizePath(String name) {        if (name == null) return null;        String fname = name.trim();        fname = fname.replace('/', '-');        fname = fname.replace(' ', '_');        fname = fname.replace('\\', '-');        fname = fname.replace('\t', '-');        fname = fname.replace('\'', '-');        fname = fname.replace('\"', '-');        fname = fname.replaceAll("_+", "_");        return fname;    }}