All Downloads are FREE. Search and download functionalities are using the official Maven repository.

weka.gui.scripting.ScriptUtils Maven / Gradle / Ivy

Go to download

The Waikato Environment for Knowledge Analysis (WEKA), a machine learning workbench. This version represents the developer version, the "bleeding edge" of development, you could say. New functionality gets added to this version.

There is a newer version: 3.9.6
Show newest version
/*
 *   This program is free software: you can redistribute it and/or modify
 *   it under the terms of the GNU General Public License as published by
 *   the Free Software Foundation, either version 3 of the License, or
 *   (at your option) any later version.
 *
 *   This program 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 General Public License for more details.
 *
 *   You should have received a copy of the GNU General Public License
 *   along with this program.  If not, see .
 */

/*
 * ScriptUtils.java
 * Copyright (C) 2009-2012 University of Waikato, Hamilton, New Zealand
 */

package weka.gui.scripting;

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;

/**
 * A helper class for Script related stuff.
 * 
 * @author  fracpete (fracpete at waikato dot ac dot nz)
 * @version $Revision: 8034 $
 */
public class ScriptUtils {
  
  /**
   * Copies or moves files and directories (recursively).
   * If targetLocation does not exist, it will be created.
   * 

* Original code from Java-Tips.org. * * @param sourceLocation the source file/dir * @param targetLocation the target file/dir * @param move if true then the source files/dirs get deleted * as soon as copying finished * @throws IOException if copying/moving fails */ protected static void copyOrMove(File sourceLocation, File targetLocation, boolean move) throws IOException { String[] children; int i; InputStream in; OutputStream out; byte[] buf; int len; if (sourceLocation.isDirectory()) { if (!targetLocation.exists()) targetLocation.mkdir(); children = sourceLocation.list(); for (i = 0; i < children.length; i++) { copyOrMove( new File(sourceLocation, children[i]), new File(targetLocation, children[i]), move); } if (move) sourceLocation.delete(); } else { in = new FileInputStream(sourceLocation); // do we need to append the filename? if (targetLocation.isDirectory()) out = new FileOutputStream(targetLocation.getAbsolutePath() + File.separator + sourceLocation.getName()); else out = new FileOutputStream(targetLocation); // Copy the content from instream to outstream buf = new byte[1024]; while ((len = in.read(buf)) > 0) out.write(buf, 0, len); in.close(); out.close(); if (move) sourceLocation.delete(); } } /** * Copies the file/directory (recursively). * * @param sourceLocation the source file/dir * @param targetLocation the target file/dir * @throws IOException if copying fails */ public static void copy(File sourceLocation, File targetLocation) throws IOException { copyOrMove(sourceLocation, targetLocation, false); } /** * Moves the file/directory (recursively). * * @param sourceLocation the source file/dir * @param targetLocation the target file/dir * @throws IOException if moving fails */ public static void move(File sourceLocation, File targetLocation) throws IOException { copyOrMove(sourceLocation, targetLocation, true); } /** * Saves the content to a file. * * @param file the file to save to * @param content the content to save * @return true if successfully saved */ public static boolean save(File file, String content) { boolean result; BufferedWriter writer; writer = null; try { writer = new BufferedWriter(new FileWriter(file)); writer.write(content); writer.flush(); result = true; } catch (Exception e) { e.printStackTrace(); result = false; } finally { if (writer != null) { try { writer.close(); } catch (Exception e) { // ignored } } } return result; } /** * Tries to load the file and return its content. * * @param file the file to open * @return the content, otherwise null */ public static String load(File file) { StringBuffer result; BufferedReader reader; String line; String newLine; result = new StringBuffer(); newLine = System.getProperty("line.separator"); reader = null; try { // add new content reader = new BufferedReader(new FileReader(file)); while ((line = reader.readLine()) != null) { result.append(line); result.append(newLine); } } catch (Exception e) { e.printStackTrace(); result = null; } finally { if (reader != null) { try { reader.close(); } catch (Exception e) { // ignored } } } return ((result != null) ? result.toString() : null); } }





© 2015 - 2024 Weber Informatics LLC | Privacy Policy