| /******************************************************************************* |
| * Copyright (c) 2004, 2018 IBM Corporation and others. |
| * |
| * This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License 2.0 |
| * which accompanies this distribution, and is available at |
| * https://www.eclipse.org/legal/epl-2.0/ |
| * |
| * SPDX-License-Identifier: EPL-2.0 |
| * |
| * Contributors: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.swt.tools.internal; |
| |
| import java.io.*; |
| import java.util.*; |
| |
| public abstract class CleanupClass extends JNIGenerator { |
| |
| String classSourcePath; |
| String[] sourcePath; |
| String classSource; |
| Map<File, String> files; |
| int usedCount, unusedCount; |
| |
| String[] getArgNames(JNIMethod method) { |
| int n_args = method.getParameters().length; |
| if (n_args == 0) return new String[0]; |
| String name = method.getName(); |
| String params = ""; |
| int index = 0; |
| while (true) { |
| index = classSource.indexOf(name, index + 1); |
| if (!Character.isWhitespace(classSource.charAt(index - 1))) continue; |
| if (index == -1) return null; |
| int parantesesStart = classSource.indexOf("(", index); |
| if (classSource.substring(index + name.length(), parantesesStart).trim().length() == 0) { |
| int parantesesEnd = classSource.indexOf(")", parantesesStart); |
| params = classSource.substring(parantesesStart + 1, parantesesEnd); |
| break; |
| } |
| } |
| String[] names = new String[n_args]; |
| StringTokenizer tk = new StringTokenizer(params, ","); |
| for (int i = 0; i < names.length; i++) { |
| String s = tk.nextToken().trim(); |
| StringTokenizer tk1 = new StringTokenizer(s, " "); |
| String s1 = null; |
| while (tk1.hasMoreTokens()) { |
| s1 = tk1.nextToken(); |
| } |
| names[i] = s1.trim(); |
| } |
| return names; |
| } |
| |
| |
| void loadClassSource() { |
| if (classSourcePath == null) return; |
| File f = new File(classSourcePath); |
| classSource = loadFile(f); |
| } |
| |
| void loadFiles () { |
| // BAD - holds on to a lot of memory |
| if (sourcePath == null) return; |
| files = new HashMap<> (); |
| for (int i = 0; i < sourcePath.length; i++) { |
| File file = new File(sourcePath[i]); |
| if (file.exists()) { |
| if (!file.isDirectory()) { |
| if (file.getAbsolutePath().endsWith(".java")) { |
| files.put(file, loadFile(file)); |
| } |
| } else { |
| loadDirectory(file); |
| } |
| } |
| } |
| } |
| |
| String loadFile (File file) { |
| try (FileReader fr = new FileReader(file); |
| BufferedReader br = new BufferedReader(fr)){ |
| StringBuilder str = new StringBuilder(); |
| char[] buffer = new char[1024]; |
| int read; |
| while ((read = br.read(buffer)) != -1) { |
| str.append(buffer, 0, read); |
| } |
| fr.close(); |
| return str.toString(); |
| } catch (IOException e) { |
| e.printStackTrace(System.out); |
| } |
| return ""; |
| } |
| |
| void loadDirectory(File file) { |
| String[] entries = file.list(); |
| if (entries == null) { |
| entries = new String[0]; |
| } |
| for (int i = 0; i < entries.length; i++) { |
| String entry = entries[i]; |
| File f = new File(file, entry); |
| if (!f.isDirectory()) { |
| if (f.getAbsolutePath().endsWith(".java")) { |
| files.put(f, loadFile(f)); |
| } |
| } else { |
| loadDirectory(f); |
| } |
| } |
| } |
| |
| @Override |
| public void generate(JNIClass clazz) { |
| loadFiles (); |
| loadClassSource(); |
| } |
| |
| public void setSourcePath(String[] sourcePath) { |
| this.sourcePath = sourcePath; |
| files = null; |
| } |
| |
| public void setClassSourcePath(String classSourcePath) { |
| this.classSourcePath = classSourcePath; |
| } |
| |
| } |