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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 BuildStep {
     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         this.destPath = destPath;
     33         this.classPath = classPath;
     34     }
     35 
     36     public void addSourceFile(String sourceFile)
     37     {
     38         sourceFiles.add(sourceFile);
     39     }
     40 
     41     @Override
     42     boolean build() {
     43         if (super.build())
     44         {
     45             if (sourceFiles.isEmpty())
     46             {
     47                 return true;
     48             }
     49 
     50             File destFile = new File(destPath);
     51             if (!destFile.exists() && !destFile.mkdirs())
     52             {
     53                 System.err.println("failed to create destination dir");
     54                 return false;
     55             }
     56             int args = 4;
     57             String[] commandLine = new String[sourceFiles.size()+args];
     58             commandLine[0] = "-classpath";
     59             commandLine[1] = classPath;
     60             commandLine[2] = "-d";
     61             commandLine[3] = destPath;
     62 
     63             String[] files = new String[sourceFiles.size()];
     64             sourceFiles.toArray(files);
     65 
     66             System.arraycopy(files, 0, commandLine, args, files.length);
     67 
     68 
     69             return Main.compile(commandLine, new PrintWriter(System.err)) == 0;
     70         }
     71         return false;
     72     }
     73 
     74     @Override
     75     public boolean equals(Object obj) {
     76         // TODO Auto-generated method stub
     77         if (super.equals(obj))
     78         {
     79             JavacBuildStep other = (JavacBuildStep) obj;
     80             return destPath.equals(other.destPath)
     81                 && classPath.equals(other.classPath)
     82                 && sourceFiles.equals(other.sourceFiles);
     83         }
     84         return false;
     85     }
     86 
     87     @Override
     88     public int hashCode() {
     89         return destPath.hashCode() ^ classPath.hashCode() ^ sourceFiles.hashCode();
     90     }
     91 }
     92