jdk/test/lib/testlibrary/JavaToolUtils.java
changeset 26362 b1e9b551e10a
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/jdk/test/lib/testlibrary/JavaToolUtils.java	Wed Sep 03 02:11:16 2014 +0000
@@ -0,0 +1,209 @@
+/*
+ * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.  Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code 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
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+import java.io.BufferedReader;
+import java.io.File;
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.io.InputStreamReader;
+import java.nio.file.Files;
+import java.util.List;
+import java.util.Objects;
+import java.util.concurrent.TimeUnit;
+import java.util.jar.Attributes;
+import java.util.jar.JarEntry;
+import java.util.jar.JarOutputStream;
+import java.util.jar.Manifest;
+import javax.tools.JavaCompiler;
+import javax.tools.JavaFileObject;
+import javax.tools.StandardJavaFileManager;
+import javax.tools.ToolProvider;
+
+/**
+ * Utils class for compiling , creating jar file and executing a java command
+ *
+ * @author Raghu Nair
+ */
+
+public class JavaToolUtils {
+
+    public static final long DEFAULT_WAIT_TIME = 10000;
+
+    private JavaToolUtils() {
+    }
+
+    /**
+     * Takes a list of files and compile these files into the working directory.
+     *
+     * @param files
+     * @throws IOException
+     */
+    public static void compileFiles(List<File> files) throws IOException {
+        JavaCompiler compiler = ToolProvider.getSystemJavaCompiler();
+        try (StandardJavaFileManager fileManager = compiler.
+                getStandardFileManager(null, null, null)) {
+            Iterable<? extends JavaFileObject> compilationUnit
+                    = fileManager.getJavaFileObjectsFromFiles(files);
+            compiler.getTask(null, fileManager, null, null, null,
+                    compilationUnit).call();
+        }
+    }
+
+    /**
+     * Create a jar file using the list of files provided.
+     *
+     * @param jar
+     * @param files
+     * @throws IOException
+     */
+    public static void createJar(File jar, List<File> files)
+            throws IOException {
+        Manifest manifest = new Manifest();
+        manifest.getMainAttributes().put(Attributes.Name.MANIFEST_VERSION,
+                "1.0");
+        try (JarOutputStream target = new JarOutputStream(
+                new FileOutputStream(jar), manifest)) {
+            for (File file : files) {
+                add(file, target);
+            }
+        }
+    }
+
+    private static void add(File source, JarOutputStream target)
+            throws IOException {
+        Objects.requireNonNull(source, "source cannot be null");
+        Objects.requireNonNull(target, "target cannot be null");
+        // not tested against directories and from different path.
+        String name = source.getName();
+        if (source.isDirectory()) {
+            if (!name.isEmpty()) {
+                if (!name.endsWith("/")) {
+                    name += "/";
+                }
+                JarEntry entry = new JarEntry(name);
+                entry.setTime(source.lastModified());
+                target.putNextEntry(entry);
+                target.closeEntry();
+            }
+            for (File nestedFile : source.listFiles()) {
+                add(nestedFile, target);
+            }
+            return;
+        }
+        System.out.println("Adding entry " + name);
+        JarEntry entry = new JarEntry(name);
+        entry.setTime(source.lastModified());
+        target.putNextEntry(entry);
+        Files.copy(source.toPath(), target);
+        target.closeEntry();
+    }
+
+    /**
+     * Runs java command with provided arguments. Caller should not pass java
+     * command in the argument list.
+     *
+     * @param commands
+     * @param waitTime time to wait for the command to exit in milli seconds
+     * @return
+     * @throws Exception
+     */
+    public static int runJava(List<String> commands,long waitTime)
+            throws Exception {
+        String java = System.getProperty("java.home") + "/bin/java";
+        commands.add(0, java);
+        String command = commands.toString().replace(",", " ");
+        System.out.println("Executing the following command \n" + command);
+        ProcessBuilder processBuilder = new ProcessBuilder(commands);
+        final Process process = processBuilder.start();
+        BufferedReader errorStream = new BufferedReader(
+                new InputStreamReader(process.getErrorStream()));
+        BufferedReader outStream = new BufferedReader(
+                new InputStreamReader(process.getInputStream()));
+        String errorLine;
+        StringBuilder errors = new StringBuilder();
+        String outLines;
+        while ((errorLine = errorStream.readLine()) != null) {
+            errors.append(errorLine).append("\n");
+        }
+        while ((outLines = outStream.readLine()) != null) {
+            System.out.println(outLines);
+        }
+        errorLine = errors.toString();
+        System.err.println(errorLine);
+        process.waitFor(waitTime, TimeUnit.MILLISECONDS);
+        int exitStatus = process.exitValue();
+        if (exitStatus != 0 && errorLine != null && errorLine.isEmpty()) {
+            throw new RuntimeException(errorLine);
+        }
+        return exitStatus;
+    }
+
+    /**
+     * Runs java command with provided arguments. Caller should not pass java
+     * command in the argument list.
+     *
+     * @param commands
+     * @return
+     * @throws Exception
+     */
+    public static int runJava(List<String> commands) throws Exception {
+        return runJava(commands, DEFAULT_WAIT_TIME);
+    }
+
+    /**
+     * Run any command
+     * @param commands
+     * @return
+     * @throws Exception
+     */
+    public static int runCommand(List<String> commands) throws Exception {
+        String command = commands.toString().replace(",", " ");
+        System.out.println("Executing the following command \n" + command);
+        ProcessBuilder processBuilder = new ProcessBuilder(commands);
+        final Process process = processBuilder.start();
+        BufferedReader errorStream = new BufferedReader(
+                new InputStreamReader(process.getErrorStream()));
+        BufferedReader outStream = new BufferedReader(
+                new InputStreamReader(process.getInputStream()));
+        String errorLine;
+        StringBuilder errors = new StringBuilder();
+        String outLines;
+        while ((errorLine = errorStream.readLine()) != null) {
+            errors.append(errorLine).append("\n");
+        }
+        while ((outLines = outStream.readLine()) != null) {
+            System.out.println(outLines);
+        }
+        errorLine = errors.toString();
+        System.err.println(errorLine);
+        int exitStatus = process.exitValue();
+        if (exitStatus != 0 && errorLine != null && errorLine.isEmpty()) {
+            throw new RuntimeException(errorLine);
+        }
+        return exitStatus;
+    }
+
+
+}