1 /*
   2  * Copyright (c) 2020, 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 import java.nio.file.Path;
  25 import java.nio.file.Paths;
  26 import java.util.ArrayList;
  27 import java.util.Arrays;
  28 import java.util.regex.Matcher;
  29 import java.util.regex.Pattern;
  30 import java.util.spi.ToolProvider;
  31 
  32 public class JtregJextract {
  33     private static final ToolProvider JEXTRACT = ToolProvider.findFirst("jextract")
  34             .orElseThrow(() ->
  35                     new RuntimeException("jextract tool not found")
  36             );
  37 
  38     private final Path inputDir;
  39     private final Path outputDir;
  40 
  41     JtregJextract() {
  42         this(null, null);
  43     }
  44 
  45     JtregJextract(Path input, Path output) {
  46         inputDir = (input != null) ? input :
  47                 Paths.get(System.getProperty("test.src", "."));
  48         outputDir = (output != null) ? output :
  49                 Paths.get(System.getProperty("test.classes", "."));
  50 
  51     }
  52 
  53     protected String[] processArgs(String... args) {
  54         Pattern sysPropPattern = Pattern.compile("'?\\$\\((.*)\\)'?");
  55         ArrayList<String> jextrOpts = new ArrayList<>();
  56 
  57         jextrOpts.clear();
  58         jextrOpts.add("-C-nostdinc");
  59         jextrOpts.add("-I");
  60         jextrOpts.add(inputDir.toAbsolutePath().toString());
  61         jextrOpts.add("--output");
  62         jextrOpts.add(outputDir.toAbsolutePath().toString());
  63         jextrOpts.add("--compile");
  64 
  65         int i = 0;
  66         while (i < args.length) {
  67             String opt = args[i++];
  68             switch (opt) {
  69                 case "--":
  70                     break;
  71                 case "--output":
  72                 case "--compile":
  73                     i++;
  74                     continue;
  75                 default: {
  76                     // Pattern $(system.property.name) is replaced with the
  77                     // value of the System property of that name.
  78                     Matcher m = sysPropPattern.matcher(opt);
  79                     if (m.matches()) {
  80                         jextrOpts.add(System.getProperty(m.group(1)));
  81                     } else {
  82                         jextrOpts.add(opt);
  83                     }
  84                 }
  85             }
  86         }
  87 
  88         while (i < args.length) {
  89             jextrOpts.add(getInputFilePath(args[i++]).toString());
  90         }
  91 
  92         return jextrOpts.toArray(String[]::new);
  93     }
  94 
  95     protected int jextract(String... options) {
  96         int result = JEXTRACT.run(System.out, System.err, processArgs(options));
  97         if (result != 0) {
  98             throw new RuntimeException(JEXTRACT.name() + " returns non-zero value");
  99         }
 100         return result;
 101     }
 102 
 103     private Path getInputFilePath(String filename) {
 104         return inputDir.resolve(filename).toAbsolutePath();
 105     }
 106 
 107     public static int main(String[] args) {
 108         JtregJextract jj =  new JtregJextract();
 109         return jj.jextract(args);
 110     }
 111 }