1/*
2 * Copyright (c) 2012, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 */
23
24/*
25 * This utils class is been used by test T8003512 which is compiled with Java 6
26 * only features. So if this class is modified, it should be so using Java 6
27 * features only.
28 */
29
30import java.io.BufferedInputStream;
31import java.io.BufferedOutputStream;
32import java.io.Closeable;
33import java.io.File;
34import java.io.FileInputStream;
35import java.io.FileOutputStream;
36import java.io.IOException;
37import java.io.InputStream;
38import java.io.OutputStream;
39import java.io.PrintStream;
40
41public class Utils {
42
43    static final sun.tools.jar.Main jarTool =
44            new sun.tools.jar.Main(System.out, System.err, "jar-tool");
45
46    static final com.sun.tools.javac.Main javac =
47            new com.sun.tools.javac.Main();
48
49    private Utils(){}
50
51    public static boolean compile(String... args) {
52        return javac.compile(args) == 0;
53    }
54
55    public static void createClassFile(File javaFile, File superClass,
56            boolean delete) throws IOException {
57        createJavaFile(javaFile, superClass);
58        if (!compile(javaFile.getName())) {
59            throw new RuntimeException("compile failed unexpectedly");
60        }
61        if (delete) javaFile.delete();
62    }
63
64    public static void createJavaFile(File outFile) throws IOException {
65        createJavaFile(outFile, null);
66    }
67
68    public static void createJavaFile(File outFile, File superClass) throws IOException {
69        PrintStream ps = null;
70        String srcStr = "public class " + getSimpleName(outFile) + " ";
71        if (superClass != null) {
72            srcStr = srcStr.concat("extends " + getSimpleName(superClass) + " ");
73        }
74        srcStr = srcStr.concat("{}");
75        try {
76            FileOutputStream fos = new FileOutputStream(outFile);
77            ps = new PrintStream(fos);
78            ps.println(srcStr);
79        } finally {
80            close(ps);
81        }
82    }
83
84    static String getClassFileName(File javaFile) {
85        return javaFile.getName().endsWith(".java")
86                ? javaFile.getName().replace(".java", ".class")
87                : null;
88    }
89
90    static String getSimpleName(File inFile) {
91        String fname = inFile.getName();
92        return fname.substring(0, fname.indexOf("."));
93    }
94
95    public static void copyStream(InputStream in, OutputStream out) throws IOException {
96        byte[] buf = new byte[8192];
97        int n = in.read(buf);
98        while (n > 0) {
99            out.write(buf, 0, n);
100            n = in.read(buf);
101        }
102    }
103
104    public static void close(Closeable c) {
105        if (c != null) {
106            try {
107                c.close();
108            } catch (IOException ignore) {}
109        }
110    }
111
112    public static void deleteFile(File f) {
113        if (!f.delete()) {
114            throw new RuntimeException("could not delete file: " + f.getAbsolutePath());
115        }
116    }
117
118    public static void cat(File output, File... files) throws IOException {
119        BufferedInputStream bis = null;
120        BufferedOutputStream bos = null;
121        FileOutputStream fos = null;
122        try {
123            fos = new FileOutputStream(output);
124            bos = new BufferedOutputStream(fos);
125            for (File x : files) {
126                FileInputStream fis = new FileInputStream(x);
127                bis = new BufferedInputStream(fis);
128                copyStream(bis, bos);
129                Utils.close(bis);
130            }
131        } finally {
132            Utils.close(bis);
133            Utils.close(bos);
134            Utils.close(fos);
135        }
136    }
137}
138