/*
    * #%L
    * Native ARchive plugin for Maven
    * %%
    * Copyright (C) 2002 - 2014 NAR Maven Plugin developers.
    * %%
    * Licensed 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
   * 
   * http://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.
   * #L%
   */
  package com.github.maven_nar.cpptasks.os390;
  
  import java.io.File;
  import java.util.Vector;
  
  import org.apache.tools.ant.types.Environment;
  
  import com.github.maven_nar.cpptasks.CUtil;
  import com.github.maven_nar.cpptasks.CompilerDef;
  import com.github.maven_nar.cpptasks.OptimizationEnum;
  import com.github.maven_nar.cpptasks.compiler.AbstractCompiler;
  import com.github.maven_nar.cpptasks.compiler.CommandLineCCompiler;
  import com.github.maven_nar.cpptasks.compiler.LinkType;
  import com.github.maven_nar.cpptasks.compiler.Linker;
  import com.github.maven_nar.cpptasks.compiler.Processor;
  import com.github.maven_nar.cpptasks.types.UndefineArgument;
  
  /**
   * Adapter for the IBM (R) OS/390 (tm) C++ Compiler
   *
   * @author Hiram Chirino (cojonudo14@hotmail.com)
   */
  public class OS390CCompiler extends CommandLineCCompiler {
    private static final AbstractCompiler instance = new OS390CCompiler(false, null);
  
    public static AbstractCompiler getInstance() {
      return instance;
    }
  
    private OS390CCompiler(final boolean newEnvironment, final Environment env) {
      super("cxx", null, new String[] {
          ".c", ".cc", ".cpp", ".cxx", ".c++", ".s"
      }, new String[] {
          ".h", ".hpp"
      }, ".o", false, null, newEnvironment, env);
    }
  
    @Override
    protected void addImpliedArgs(final Vector<String> args, final boolean debug, final boolean multithreaded,
        final boolean exceptions, final LinkType linkType, final Boolean rtti, final OptimizationEnum optimization) {
      // Specifies that only compilations and assemblies be done.
      // Link-edit is not done
      args.addElement("-c");
      args.addElement("-W");
      args.addElement("c,NOEXPMAC,NOSHOWINC");
      /*
       * if (exceptions) { args.addElement("/GX"); }
       */
      if (debug) {
        args.addElement("-g");
        args.addElement("-D");
        args.addElement("_DEBUG");
        /*
         * if (multithreaded) { args.addElement("/D_MT"); if (staticLink) {
         * args.addElement("/MTd"); } else { args.addElement("/MDd");
         * args.addElement("/D_DLL"); } } else { args.addElement("/MLd"); }
         */
      } else {
        args.addElement("-D");
        args.addElement("NEBUG");
        /*
         * if (multithreaded) { args.addElement("/D_MT"); if (staticLink) {
         * args.addElement("/MT"); } else { args.addElement("/MD");
         * args.addElement("/D_DLL"); } } else { args.addElement("/ML"); }
         */
      }
    }
  
    @Override
    protected void addWarningSwitch(final Vector<String> args, final int level) {
      OS390Processor.addWarningSwitch(args, level);
    }
  
    /**
     * The buildDefineArguments implementation CommandLineCCompiler is not good
     * for us because os390 defines are give by -D definex instead of
     * /Ddefinex, 2 args not 1! since we implement this ourslefs, we do not
     * have to implement the getDefineSwitch() and the getUndefineSwitch().
     */
    @Override
   protected void buildDefineArguments(final CompilerDef[] defs, final Vector<String> args) {
     //
     // assume that we aren't inheriting defines from containing <cc>
     //
     UndefineArgument[] merged = defs[0].getActiveDefines();
     for (int i = 1; i < defs.length; i++) {
       //
       // if we are inheriting, merge the specific defines with the
       // containing defines
       merged = UndefineArgument.merge(defs[i].getActiveDefines(), merged);
     }
     final StringBuffer buf = new StringBuffer(30);
     for (final UndefineArgument current : merged) {
       buf.setLength(0);
       if (current.isDefine()) {
         args.addElement("-D");
         buf.append(current.getName());
         if (current.getValue() != null && current.getValue().length() > 0) {
           buf.append('=');
           buf.append(current.getValue());
         }
         args.addElement(buf.toString());
       } else {
         args.addElement("-U");
         args.addElement(current.getName());
       }
     }
   }
 
   @Override
   public Processor changeEnvironment(final boolean newEnvironment, final Environment env) {
     if (newEnvironment || env != null) {
       return new OS390CCompiler(newEnvironment, env);
     }
     return this;
   }
 
   @Override
   protected void getDefineSwitch(final StringBuffer buffer, final String define, final String value) {
   }
 
   @Override
   protected File[] getEnvironmentIncludePath() {
     return CUtil.getPathFromEnvironment("INCLUDE", ":");
   }
 
   @Override
   protected String getIncludeDirSwitch(final String includeDir) {
     return OS390Processor.getIncludeDirSwitch(includeDir);
   }
 
   @Override
   public Linker getLinker(final LinkType type) {
     return OS390Linker.getInstance().getLinker(type);
   }
 
   @Override
   public int getMaximumCommandLength() {
     return Integer.MAX_VALUE;
   }
 
   /* Only compile one file at time for now */
   @Override
   protected int getMaximumInputFilesPerCommand() {
     return Integer.MAX_VALUE;
   }
 
   @Override
   protected void getUndefineSwitch(final StringBuffer buffer, final String define) {
   }
 }