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/*
* Copyright (c) 2012, 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.
*
* 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.
*/
/*
* This utils class is been used by test T8003512 which is compiled with Java 6
* only features. So if this class is modified, it should be so using Java 6
* features only.
*/
import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.Closeable;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.PrintStream;
public class Utils {
static final sun.tools.jar.Main jarTool =
new sun.tools.jar.Main(System.out, System.err, "jar-tool");
static final com.sun.tools.javac.Main javac =
new com.sun.tools.javac.Main();
private Utils(){}
public static boolean compile(String... args) {
return javac.compile(args) == 0;
}
public static void createClassFile(File javaFile, File superClass,
boolean delete) throws IOException {
createJavaFile(javaFile, superClass);
if (!compile(javaFile.getName())) {
throw new RuntimeException("compile failed unexpectedly");
}
if (delete) javaFile.delete();
}
public static void createJavaFile(File outFile) throws IOException {
createJavaFile(outFile, null);
}
public static void createJavaFile(File outFile, File superClass) throws IOException {
String srcStr = "public class " + getSimpleName(outFile) + " ";
if (superClass != null) {
srcStr = srcStr.concat("extends " + getSimpleName(superClass) + " ");
}
srcStr = srcStr.concat("{}");
try (PrintStream ps = new PrintStream(new FileOutputStream(outFile))) {
ps.println(srcStr);
}
}
static String getClassFileName(File javaFile) {
return javaFile.getName().endsWith(".java")
? javaFile.getName().replace(".java", ".class")
: null;
}
static String getSimpleName(File inFile) {
String fname = inFile.getName();
return fname.substring(0, fname.indexOf("."));
}
public static void copyStream(InputStream in, OutputStream out) throws IOException {
byte[] buf = new byte[8192];
int n = in.read(buf);
while (n > 0) {
out.write(buf, 0, n);
n = in.read(buf);
}
}
public static void close(Closeable c) {
if (c != null) {
try {
c.close();
} catch (IOException ignore) {}
}
}
public static void deleteFile(File f) {
if (!f.delete()) {
throw new RuntimeException("could not delete file: " + f.getAbsolutePath());
}
}
public static void cat(File output, File... files) throws IOException {
try (BufferedOutputStream bos = new BufferedOutputStream(new FileOutputStream(output))) {
for (File file : files) {
try (BufferedInputStream bis = new BufferedInputStream(new FileInputStream(file))) {
copyStream(bis, bos);
}
}
}
}
}
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