Java tutorial
/* * Software Name : ATK * * Copyright (C) 2007 - 2012 France Tlcom * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. * * ------------------------------------------------------------------ * File Name : FileUtilities.java * * Created : 26/04/2007 * Author(s) : Aurore PENAULT */ package com.orange.atk.atkUI.corecli.utils; import java.io.BufferedReader; 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 org.dom4j.Document; import org.dom4j.Element; import org.dom4j.io.OutputFormat; import org.dom4j.io.SAXReader; import org.dom4j.io.XMLWriter; /** * * @author Aurore PENAULT * @since JDK5.0 */ public class FileUtilities { private FileUtilities() { } /** * A file filter that accepts specified files. */ public static class Filter extends javax.swing.filechooser.FileFilter { private String description = ""; private String extension = ""; public Filter(String desc, String ext) { description = desc; extension = ext; } public boolean accept(File f) { if (f.isDirectory()) { return true; } String nomFichier = f.getPath().toLowerCase(); if (nomFichier.endsWith(extension)) { return true; } return false; } public String getDescription() { return description; } } /** * Verify the extension of a given file * * @param src * the given file path * @param extension * the extension to add if it is necessary * @return the new file path */ public static String verifyExtension(String src, String extension) { if (src.indexOf('.') != -1) { if (!src.substring(src.lastIndexOf('.')).equals(extension)) { src += extension; } } else { src += extension; } return src; } /** * A file filter that accepts only directories. */ public static class FilterDir extends javax.swing.filechooser.FileFilter { public boolean accept(File f) { if (f.isDirectory()) { return true; } return false; } public String getDescription() { return "All directories"; } } /** * Copy a source text file into a destination file. * * @param in * source file * @param out * destination file * @throws Exception */ public static void copyTextFile(File in, File out) throws Exception { FileReader fis = new FileReader(in); FileWriter fos = new FileWriter(out); char[] buf = new char[1024]; int i = 0; while ((i = fis.read(buf)) != -1) { fos.write(buf, 0, i); } fis.close(); fos.close(); } /** * Copy a source file into a destination file in a binary way. * * @param in * source file * @param out * destination file * @throws Exception */ public static void copyBinaryFile(File in, File out) throws Exception { FileInputStream fis = new FileInputStream(in); FileOutputStream fos = new FileOutputStream(out); byte[] buf = new byte[1024]; int i = 0; while ((i = fis.read(buf)) != -1) { fos.write(buf, 0, i); } fis.close(); fos.close(); } /** * Copy a source html file into a destination file, patching the style sheet * on the fly for the given one. * * @param in * source html file * @param out * destination file * @param newStyleSheetPath * the new css style sheet absolute path * @throws Exception */ public static void copyHTMLFile(File in, File out, String newStyleSheetPath) throws Exception { FileReader fis = new FileReader(in); FileWriter fos = new FileWriter(out); char[] buf = new char[1024]; int i = 0; // if the file contains enough character int byteToRead = 250; if (fis.ready()) { // 1. read first characters (up to path of css file) String text = ""; while ((i < byteToRead) || (i == -1)) { i = fis.read(buf); text = text + new String(buf); } // 2. change css style sheet if (newStyleSheetPath != null) { String newText = changeStyleFile(text, newStyleSheetPath); fos.write(newText); } // 3. read remainings, if any... if (i != -1) { while ((i = fis.read(buf)) != -1) { fos.write(buf, 0, i); } } } fis.close(); fos.close(); } /** * Copy a source html file into a destination file, patching the style sheet * on the fly for the given one. * * @param in * source html file * @param out * destination file * @param newStyleSheetPath * the new css style sheet absolute path * @throws Exception */ public static void copyHTMLFilePrettyPrint(File in, File out, String newStyleSheetPath) throws Exception { SAXReader reader = new SAXReader(); Document document = reader.read(in.getAbsolutePath()); Element linkElem = (Element) document.selectSingleNode("/html/head/link"); if (linkElem != null) { linkElem.addAttribute("href", newStyleSheetPath); } OutputFormat format = OutputFormat.createPrettyPrint(); XMLWriter writer = new XMLWriter(new FileOutputStream(out), format); writer.write(document); writer.close(); } private static String changeStyleFile(String htmlText, String newStyleFilePath) { String regexp = "file:.*[.]css"; String replacement = /* "file:" + */newStyleFilePath; return htmlText.replaceFirst(regexp, replacement); } /** * Replace color name by color value from file 'in' to file 'out'. In order * to resolve form a file, conciders copying it in a temp file before: * <code> * FileUtilities.copyFile( new File(filePath), tmp); * FileUtilities.resolveColor(tmp, new File(filePath), "orange", "#FF6600"); * </code> * * @param in * source html file * @param out * destination file * @param colorName * the new name of the color (ex: orange) * @param colorValue * the value to use (ex: #FF6A0) * @throws IOException */ public static void resolveHTMLColor(File in, File out, String colorName, String colorValue) throws IOException { BufferedReader fis = new BufferedReader(new FileReader(in)); FileWriter fos = new FileWriter(out); String readText = ""; while (readText != null) { readText = fis.readLine(); String regexp = "<font color=\"" + colorName + "\""; String replacement = "<font color=\"" + colorValue + "\""; if (readText != null) { if (readText.indexOf(regexp) > 0) { readText = readText.replaceFirst(regexp, replacement); } fos.write(readText); } } fis.close(); fos.close(); } }