Add a tool to compare the differences of two copies of J2S libraries and generate scripts for Java2Script classloader to adjust *.js path to latest version.

zhourenjian · zhourenjian · commit 62df4f8e685b · 2010-04-20T07:54:18.000Z
Usage:
...J2SVersionDelta &lt;folder holding 2.0.1-v*&gt; &lt;2.0.1-v1&gt; &lt;2.0.1-v1&gt;
And copy generated script to HTML/JS file before classloader loading *.s
diff --git a/sources/net.sf.j2s.lib/src/net/sf/j2s/lib/build/J2SVersionDelta.java b/sources/net.sf.j2s.lib/src/net/sf/j2s/lib/build/J2SVersionDelta.java
@@ -0,0 +1,126 @@
+/*******************************************************************************
+ * Copyright (c) 2010 java2script.org and others.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ *     Zhou Renjian - initial API and implementation
+ *******************************************************************************/
+
+package net.sf.j2s.lib.build;
+
+import java.io.ByteArrayOutputStream;
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.IOException;
+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ * @author zhou renjian
+ *
+ * 2010-4-18
+ */
+public class J2SVersionDelta {
+
+	private static String readFileContent(File file) {
+		FileInputStream res = null;
+		ByteArrayOutputStream baos = new ByteArrayOutputStream();
+		byte[] buf = new byte[1024];
+		int read = 0;
+		try {
+			res = new FileInputStream(file);
+			while ((read = res.read(buf)) != -1) {
+				baos.write(buf, 0, read);
+			}
+		} catch (IOException e) {
+			e.printStackTrace();
+		} finally {
+			if (res != null) {
+				try {
+					res.close();
+				} catch (IOException e) {
+					e.printStackTrace();
+				}
+			}
+		}
+		return baos.toString();
+	}
+
+	private static void traverseFolder(File file, String baseFolder, String oldVersion, List deltas) {
+		File[] files = file.listFiles();
+		if (files != null && files.length > 0) {
+			for (int i = 0; i < files.length; i++) {
+				File f = files[i];
+				if (f.isDirectory()) {
+					traverseFolder(f, baseFolder, oldVersion, deltas);
+				} else {
+					String absPath = f.getAbsolutePath();
+					String relativePath = absPath.substring(baseFolder.length() + 1);
+					int idx = relativePath.indexOf(File.separator);
+					relativePath = relativePath.substring(idx + 1);
+					String oldPath = baseFolder + File.separator + oldVersion + File.separator + relativePath;
+					File oldFile = new File(oldPath);
+					
+					if (!oldFile.exists() || oldFile.length() != f.length()) {
+						deltas.add(relativePath);
+					} else {
+						String content = readFileContent(f);
+						String oldContent = readFileContent(oldFile);
+						if (!content.equals(oldContent)) {
+							deltas.add(relativePath);
+						}
+					}
+				}
+			}
+		}
+	}
+	
+	public static void main(String[] args) {
+		if (args == null || args.length != 3) {
+			System.out.println("Usage:\r\nJ2SVersionDelta <base folder> <original version alias> <updated version alias>");
+			return;
+		}
+
+		String oldVersion = args[1];
+		String newVersion = args[2];
+		File originalFolder = new File(args[0], oldVersion);
+		File updatedFolder = new File(args[0], newVersion);
+		if (!originalFolder.exists()) {
+			System.out.println("Folder " + oldVersion + " does not exist!");
+			return;
+		}
+		if (!updatedFolder.exists()) {
+			System.out.println("Folder " + newVersion + " does not exist!");
+			return;
+		}
+		String basePath = new File(args[0]).getAbsolutePath();
+		ArrayList deltas = new ArrayList();
+		traverseFolder(updatedFolder, basePath, oldVersion, deltas);
+		int size = deltas.size();
+		if (size > 0) {
+			System.out.println("window[\"j2s.update.delta\"] = [");
+			for (int i = 0; i < size; i++) {
+				String path = (String) deltas.get(i);
+				if (i > 0) {
+					System.out.print("\t\"$\", \"$\", ");
+				} else {
+					System.out.print("\t\"" + oldVersion + "\", ");
+					System.out.print("\"" + newVersion + "\", ");
+				}
+				System.out.print("\"" + path.replace('\\', '/') + "\"");
+				if (i == size - 1) {
+					System.out.println();
+				} else {
+					System.out.println(",");
+				}
+			}
+			System.out.println("];");
+		} else {
+			System.out.println("There is no updates!");
+		}
+	}
+
+}
