GHCSystemLibrary.java

// Copyright (c) 2006-2008 by Leif Frenzel - see http://leiffrenzel.de
// This code is made available under the terms of the Eclipse Public License,
// version 1.0 (EPL). See http://www.eclipse.org/legal/epl-v10.html
package net.sf.eclipsefp.haskell.ui.internal.views.projectexplorer.model;

import java.util.ArrayList;
import java.util.List;
import java.util.Map;
import net.sf.eclipsefp.haskell.buildwrapper.BWFacade;
import net.sf.eclipsefp.haskell.buildwrapper.BuildWrapperPlugin;
import net.sf.eclipsefp.haskell.buildwrapper.types.CabalPackage;
import net.sf.eclipsefp.haskell.core.compiler.CompilerManager;
import net.sf.eclipsefp.haskell.core.compiler.IHsImplementation;
import net.sf.eclipsefp.haskell.ui.internal.util.UITexts;
import net.sf.eclipsefp.haskell.ui.internal.views.common.ITreeElement;
import net.sf.eclipsefp.haskell.ui.util.IImageNames;
import org.eclipse.core.resources.IProject;
import org.eclipse.core.runtime.Path;
import org.eclipse.osgi.util.NLS;


public class GHCSystemLibrary implements ITreeElement {

  private final IProject project;

  public GHCSystemLibrary( final IProject project ) {
    this.project = project;
  }


  // interface methods of ITreeElement
  ////////////////////////////////////

  @Override
  public List<GHCPackageConf> getChildren() {
    List<GHCPackageConf> result = new ArrayList<>();
    /*ICompilerManager man = CompilerManager.getInstance();
    if( man.getCurrentHsImplementation() != null ) {
      IPath binDir = new Path( man.getCurrentHsImplementation().getBinDir() );
      String exe =  binDir.append( GHCSyntax.GHC_PKG ).toOSString();
      String queryResult = QueryUtil.query( exe, "list" ); //$NON-NLS-1$
      parsePackageList( queryResult, result );

      ScionInstance si=HaskellUIPlugin.getDefault().getScionInstanceManager( project );
      if (si!=null && si.getCabalDescription()!=null){
        try {
          System.out.println(si.getCabalDescription().toString( 2 ));
        } catch (JSONException json){
          json.printStackTrace();
        }
      }

    }*/
    /*ScionInstance si=ScionPlugin.getScionInstance( project );
    if (si!=null && si.getPackagesByDB()!=null){
      for (String db:si.getPackagesByDB().keySet()){
        result.add( new GHCPackageConf( this, new Path(db), si.getPackagesByDB().get( db ) ) );
      }
    }*/
    BWFacade f=BuildWrapperPlugin.getFacade( project );
    if (f!=null){
      Map<String,CabalPackage[]> dbm= f.getPackagesByDB();
      if (dbm!=null){
        for (String db:dbm.keySet()){
          result.add( new GHCPackageConf( this, new Path(db), dbm.get( db ) ) );
        }
      }
    }
    return result;
  }

  @Override
  public Object getParent() {
    return project;
  }

  @Override
  public String getText() {
    IHsImplementation impl = CompilerManager.getCurrentHsImplementation();
    String name = UITexts.explorer_libraries_noimpl;
    if( impl != null ) {
      name = impl.getName();
    }
    return NLS.bind( UITexts.explorer_libraries, name );
  }

  @Override
  public String getImageKey() {
    return IImageNames.IMPORT_LIBRARY;
  }


  // helping functions
  ////////////////////
//
//  private void parsePackageList( final String content,
//                                 final List<GHCPackageConf> confs ) {
//    Map<String, StringBuilder> entries
//      = new HashMap<String,StringBuilder>();
//    try {
//      BufferedReader br = new BufferedReader( new StringReader( content ) );
//      StringBuilder sb = null;
//      String line = br.readLine();
//      while( line != null ) {
//        if( line.startsWith( "  " ) && sb != null ) { //$NON-NLS-1$
//          String s=line.trim();
//          sb.append(s);
//          // output has changed for 6.12
//          if (!s.endsWith( "," )){ //$NON-NLS-1$
//            sb.append(","); //$NON-NLS-1$
//          }
//        } else if (line.endsWith( ":" )){//$NON-NLS-1$
//          sb = new StringBuilder();
//          String withoutColon = line.substring(0, line.length() - 1);
//          entries.put(withoutColon, sb);
//        }
//        line = br.readLine();
//      }
//    } catch( final IOException ioex ) {
//      // won't happen, we're just reading a string
//    }
//    for( String entry: entries.keySet() ) {
//      Path loc = new Path( entry.trim() );
//      confs.add( new GHCPackageConf( this, loc, entries.get(entry).toString() ) );
//    }
//  }
}