source: trunk/gsdl3/src/java/org/greenstone/gsdl3/gs3build/collection/GS2CollectionCfg.java@ 6239

package org.greenstone.gsdl3.gs3build.collection;

import java.io.File;

import java.util.List;
import java.util.ArrayList;
import java.util.Iterator;

import org.greenstone.gsdl3.gs3build.doctypes.DocumentLoader;
import org.greenstone.gsdl3.gs3build.util.XMLTools;
import org.greenstone.gsdl3.gs3build.util.GS2TextFileHandler;

import org.greenstone.gsdl3.gs3build.classifier.ClassifierInterface;
import org.greenstone.gsdl3.gs3build.classifier.ClassifierManager;

import org.greenstone.gsdl3.gs3build.BuildManager;

public class GS2CollectionCfg
{
  BuildManager buildManager;

  class GS2CollectCfgHandler extends GS2TextFileHandler
  { 
    
    GS2CollectCfgHandler(String content, File collectFile, GS2CollectionCfg configurator)
    { super(content);
 
      while (this.hasMoreLines()) {
    String lineType;

    this.getLine();
    
    lineType = this.getEntry(true);
    if (lineType == null || lineType.length() == 0) {
      continue;
    }

    if (lineType.equals("classify"))
    {
      String classType = this.getEntry(true);
      if (classType == null || classType.length() == 0) {
        continue;
      }
      classType = "GS2" + classType + "Classifier";
      
      List paramList = new ArrayList();
      
      // read in the parameters - to allow for better abstraction of other parts,
      // the handling of this is a bit 'odd', specifically modifying any file
      // references here before passing them on...
      String parameter = null;
      String lastParam = null;
      while (this.hasMore())
      { String param = this.getEntry(true);
        
        if (param != null && param.length() > 0) 
        { // expand any hfile references...
          if (lastParam != null && lastParam.equals("-hfile")) {
        param = collectFile.getParent() + File.separator + param;
          }
          
          paramList.add(param);
        }

        lastParam = param;
      }

      ClassifierInterface classifier = ClassifierManager.loadClassifier(classType, paramList);
      if (classifier != null) {
        configurator.addClassifier(classifier);
      }
    }
      }
    }
  }

  public GS2CollectionCfg(BuildManager manager, File file)
  {
    String documentText = 
      DocumentLoader.getAsString(file);

    if (documentText == null) {
      return;
    }

    this.buildManager = manager;

    GS2CollectCfgHandler handler = new GS2CollectCfgHandler(documentText, file, this);
  }
  
  void addClassifier(ClassifierInterface classifier)
  {
    ClassifierManager manager = this.buildManager.getClassifierManager();

    if (manager != null) {
      manager.addClassifier(classifier);
    }
  }

  public static GS2CollectionCfg getGS2CollectionCfg(BuildManager manager, File cfgFile)
  { GS2CollectionCfg configurator = new GS2CollectionCfg(manager, cfgFile);
    return configurator;
  }

  public static GS2CollectionCfg getGS2CollectionCfg(BuildManager manager, String etcDir)
  {
    File file = new File(etcDir, "collect.cfg");
    
    if (!file.exists()) {
      return null;
    }

    return getGS2CollectionCfg(manager, file);
  }
}