content: /*
   *  Licensed to the Apache Software Foundation (ASF) under one or more
   *  contributor license agreements.  See the NOTICE file distributed with
   *  this work for additional information regarding copyright ownership.
   *  The ASF licenses this file to You under the Apache License, Version 2.0
   *  (the "License"); you may not use this file except in compliance with
   *  the License.  You may obtain a copy of the License at
   *
   *      https://www.apache.org/licenses/LICENSE-2.0
   *
   *  Unless required by applicable law or agreed to in writing, software
   *  distributed under the License is distributed on an "AS IS" BASIS,
   *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   *  See the License for the specific language governing permissions and
   *  limitations under the License.
   *
   */
  
  package org.apache.tools.ant.taskdefs.compilers;
  
  
  import org.apache.tools.ant.BuildException;
  import org.apache.tools.ant.Project;
  import org.apache.tools.ant.types.Commandline;
  import org.apache.tools.ant.types.Path;
  
  /**
   * The implementation of the gcj compiler.
   * This is primarily a cut-and-paste from the jikes.
   *
   * @since Ant 1.4
   */
  public class Gcj extends DefaultCompilerAdapter {
      private static final String[] CONFLICT_WITH_DASH_C = {"-o", "--main=", "-D", "-fjni", "-L"};
  
      /**
       * Performs a compile using the gcj compiler.
       * @return true if the compilation succeeded
       * @throws BuildException on error
       */
      @Override
      public boolean execute() throws BuildException {
          attributes.log("Using gcj compiler", Project.MSG_VERBOSE);
          Commandline cmd = setupGCJCommand();
  
          int firstFileName = cmd.size();
          logAndAddFilesToCompile(cmd);
  
          return
              executeExternalCompile(cmd.getCommandline(), firstFileName) == 0;
      }
  
      /**
       * Set up the gcj commandline.
       * @return the command line
       */
      protected Commandline setupGCJCommand() {
          Commandline cmd = new Commandline();
          Path classpath = new Path(project);
  
          // gcj doesn't support bootclasspath dir (-bootclasspath)
          // so we'll emulate it for compatibility and convenience.
          Path p = getBootClassPath();
          if (!p.isEmpty()) {
              classpath.append(p);
          }
  
          // gcj doesn't support an extension dir (-extdir)
          // so we'll emulate it for compatibility and convenience.
          if (extdirs != null || includeJavaRuntime) {
              classpath.addExtdirs(extdirs);
          }
  
          classpath.append(getCompileClasspath());
  
          // Gcj has no option for source-path so we
          // will add it to classpath.
          if (compileSourcepath != null) {
              classpath.append(compileSourcepath);
          } else {
              classpath.append(src);
          }
  
          String exec = getJavac().getExecutable();
          cmd.setExecutable(exec == null ? "gcj" : exec);
  
          if (destDir != null) {
              cmd.createArgument().setValue("-d");
              cmd.createArgument().setFile(destDir);
  
              if (!destDir.exists()
                  && !(destDir.mkdirs() || destDir.isDirectory())) {
                  throw new BuildException(
                      "Can't make output directories. Maybe permission is wrong.");
              }
          }
  
          cmd.createArgument().setValue("-classpath");
          cmd.createArgument().setPath(classpath);
  
          if (encoding != null) {
              cmd.createArgument().setValue("--encoding=" + encoding);
          }
          if (debug) {
              cmd.createArgument().setValue("-g1");
          }
          if (optimize) {
              cmd.createArgument().setValue("-O");
          }
  
          /**
           *  gcj should be set for generate class.
           * ... if no 'compile to native' argument is passed
           */
          if (!isNativeBuild()) {
              cmd.createArgument().setValue("-C");
          }
  
          if (attributes.getSource() != null) {
              String source = attributes.getSource();
              cmd.createArgument().setValue("-fsource=" + source);
          }
  
          if (attributes.getTarget() != null) {
              String target = attributes.getTarget();
              cmd.createArgument().setValue("-ftarget=" + target);
          }
  
          addCurrentCompilerArgs(cmd);
  
          return cmd;
      }
  
      /**
       * Whether any of the arguments given via &lt;compilerarg&gt;
       * implies that compilation to native code is requested.
       * @return true if compilation to native code is requested
       * @since Ant 1.6.2
       */
      public boolean isNativeBuild() {
          boolean nativeBuild = false;
          String[] additionalArguments = getJavac().getCurrentCompilerArgs();
          int argsLength = 0;
          while (!nativeBuild && argsLength < additionalArguments.length) {
              int conflictLength = 0;
              while (!nativeBuild && conflictLength < CONFLICT_WITH_DASH_C.length) {
                  nativeBuild = additionalArguments[argsLength]
                          .startsWith(CONFLICT_WITH_DASH_C[conflictLength]);
                  conflictLength++;
              }
              argsLength++;
          }
          return nativeBuild;
      }
  
  }
  