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      1 /*
      2  * Copyright (C) 2008 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 package util.build;
     18 
     19 import com.sun.tools.javac.Main;
     20 
     21 import java.io.File;
     22 import java.io.PrintWriter;
     23 import java.util.HashSet;
     24 import java.util.Set;
     25 
     26 public class JavacBuildStep extends SourceBuildStep {
     27 
     28     private final String destPath;
     29     private final String classPath;
     30     private final Set<String> sourceFiles = new HashSet<String>();
     31     public JavacBuildStep(String destPath, String classPath) {
     32         super(new File(destPath));
     33         this.destPath = destPath;
     34         this.classPath = classPath;
     35     }
     36 
     37     @Override
     38     public void addSourceFile(String sourceFile)
     39     {
     40         sourceFiles.add(sourceFile);
     41     }
     42 
     43     @Override
     44     boolean build() {
     45         if (super.build())
     46         {
     47             if (sourceFiles.isEmpty())
     48             {
     49                 return true;
     50             }
     51 
     52             File destFile = new File(destPath);
     53             if (!destFile.exists() && !destFile.mkdirs())
     54             {
     55                 System.err.println("failed to create destination dir");
     56                 return false;
     57             }
     58             int args = 8;
     59             String[] commandLine = new String[sourceFiles.size()+args];
     60             commandLine[0] = "-classpath";
     61             commandLine[1] = classPath;
     62             commandLine[2] = "-d";
     63             commandLine[3] = destPath;
     64             commandLine[4] = "-source";
     65             commandLine[5] = "1.7";
     66             commandLine[6] = "-target";
     67             commandLine[7] = "1.7";
     68 
     69             String[] files = new String[sourceFiles.size()];
     70             sourceFiles.toArray(files);
     71 
     72             System.arraycopy(files, 0, commandLine, args, files.length);
     73 
     74             return Main.compile(commandLine, new PrintWriter(System.err)) == 0;
     75         }
     76         return false;
     77     }
     78 
     79     @Override
     80     public boolean equals(Object obj) {
     81         if (super.equals(obj))
     82         {
     83             JavacBuildStep other = (JavacBuildStep) obj;
     84             return destPath.equals(other.destPath)
     85                 && classPath.equals(other.classPath)
     86                 && sourceFiles.equals(other.sourceFiles);
     87         }
     88         return false;
     89     }
     90 
     91     @Override
     92     public int hashCode() {
     93         return destPath.hashCode() ^ classPath.hashCode() ^ sourceFiles.hashCode();
     94     }
     95 }
     96