/*
    * #%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.gcc.cross;
  
  import java.io.File;
  
  import org.apache.tools.ant.BuildException;
  
  import com.github.maven_nar.cpptasks.CCTask;
  import com.github.maven_nar.cpptasks.LinkerParam;
  import com.github.maven_nar.cpptasks.compiler.CommandLineLinkerConfiguration;
  import com.github.maven_nar.cpptasks.compiler.LinkType;
  import com.github.maven_nar.cpptasks.compiler.Linker;
  import com.github.maven_nar.cpptasks.gcc.AbstractLdLinker;
  
  /**
   * Adapter for the 'ld' linker
   *
   * @author Curt Arnold
   */
  public final class LdLinker extends AbstractLdLinker {
    private static final String[] libtoolObjFiles = new String[] {
        ".fo", ".a", ".lib", ".dll", ".so", ".sl"
    };
    private static final String[] objFiles = new String[] {
        ".o", ".a", ".lib", ".dll", ".so", ".sl"
    };
    private static final String[] discardFiles = new String[0];
    private static final LdLinker dllLinker = new LdLinker("ld", objFiles, discardFiles, "lib", ".so", false,
        new LdLinker("ld", objFiles, discardFiles, "lib", ".so", true, null));
    private static final LdLinker instance = new LdLinker("ld", objFiles, discardFiles, "", "", false, null);
  
    public static LdLinker getInstance() {
      return instance;
    }
  
    private File[] libDirs;
  
    private LdLinker(final String command, final String[] extensions, final String[] ignoredExtensions,
        final String outputPrefix, final String outputSuffix, final boolean isLibtool, final LdLinker libtoolLinker) {
      super(command, "-version", extensions, ignoredExtensions, outputPrefix, outputSuffix, isLibtool, libtoolLinker);
    }
  
    @Override
    protected Object clone() throws CloneNotSupportedException {
      final LdLinker clone = (LdLinker) super.clone();
      return clone;
    }
  
    @Override
    public Linker getLinker(final LinkType type) {
      if (type.isStaticLibrary()) {
        return GccLibrarian.getInstance();
      }
      if (type.isSharedLibrary()) {
        return dllLinker;
      }
      return instance;
    }
  
    @Override
    public void link(final CCTask task, final File outputFile, final String[] sourceFiles,
        final CommandLineLinkerConfiguration config) throws BuildException {
      try {
        final LdLinker clone = (LdLinker) this.clone();
        final LinkerParam param = config.getParam("target");
        if (param != null) {
          clone.setCommand(param.getValue() + "-" + this.getCommand());
        }
        clone.superlink(task, outputFile, sourceFiles, config);
      } catch (final CloneNotSupportedException e) {
        superlink(task, outputFile, sourceFiles, config);
      }
    }
  
    private void superlink(final CCTask task, final File outputFile, final String[] sourceFiles,
        final CommandLineLinkerConfiguration config) throws BuildException {
      super.link(task, outputFile, sourceFiles, config);
    }
  }