1 /*
   2  * Copyright (c) 2016, 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 import java.io.PrintStream;
  26 import java.io.PrintWriter;
  27 import java.io.StringWriter;
  28 import java.util.Arrays;
  29 import java.util.List;
  30 import java.util.spi.ToolProvider;
  31 import java.util.stream.Collectors;
  32 
  33 /**
  34  * JdepsRunner class to invoke jdeps with the given command line argument
  35  */
  36 public class JdepsRunner {
  37     private static final ToolProvider JDEPS_TOOL = ToolProvider.findFirst("jdeps")
  38         .orElseThrow(() -> new RuntimeException("jdeps tool not found"));
  39 
  40     public static JdepsRunner run(String... args) {
  41         JdepsRunner jdeps = new JdepsRunner(args);
  42         int rc = jdeps.run(true);
  43         if (rc != 0)
  44            throw new Error("jdeps failed: rc=" + rc);
  45         return jdeps;
  46     }
  47 
  48     final StringWriter stdout = new StringWriter();
  49     final StringWriter stderr = new StringWriter();
  50     final String[] args;
  51     public JdepsRunner(String... args) {
  52         System.out.println("jdeps " + Arrays.stream(args)
  53                                             .collect(Collectors.joining(" ")));
  54         this.args = args;
  55     }
  56 
  57     public JdepsRunner(List<String> args) {
  58         this(args.toArray(new String[0]));
  59     }
  60 
  61     public int run() {
  62         return run(false);
  63     }
  64 
  65     public int run(boolean showOutput) {
  66         try (PrintWriter pwout = new PrintWriter(stdout);
  67              PrintWriter pwerr = new PrintWriter(stderr)) {
  68             int rc = JDEPS_TOOL.run(pwout, pwerr, args);
  69             if (showOutput) {
  70                 printStdout(System.out);
  71                 printStderr(System.out);
  72             }
  73             return rc;
  74         }
  75     }
  76 
  77     public boolean outputContains(String s) {
  78         return stdout.toString().contains(s);
  79     }
  80 
  81     public void printStdout(PrintStream stream) {
  82         stream.println(stdout.toString());
  83     }
  84 
  85     public void printStderr(PrintStream stream) {
  86         stream.println(stderr.toString());
  87     }
  88 
  89     public String[] output() {
  90         String lineSep = System.getProperty("line.separator");
  91         return stdout.toString().split(lineSep);
  92     }
  93 }