org.robokind.api.animation.library.AnimationLibraryLoader Maven / Gradle / Ivy

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/*
 * Copyright 2011 Hanson Robokind LLC.
 *
 * 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.
 */
package org.robokind.api.animation.library;

import java.io.File;
import java.io.FilenameFilter;
import java.util.ArrayList;
import java.util.List;
import java.util.logging.Level;
import java.util.logging.Logger;
import org.robokind.api.animation.Animation;
import org.robokind.api.animation.xml.AnimationFileReader;

/**
 *
 * @author Matthew Stevenson 
 */
public class AnimationLibraryLoader{
    private final static Logger theLogger = Logger.getLogger(AnimationLibraryLoader.class.getName());
    
    public static AnimationLibrary loadAnimationFolder(String libraryId,
            AnimationFileReader reader, String path, boolean recursive){
        if(libraryId == null || reader == null || path == null){
            throw new NullPointerException();
        }
        File animDir = new File(path);
        List files = getFiles(animDir, null, recursive);
        List anims = loadAnimations(files, reader);
        AnimationLibrary lib = new DefaultAnimationLibrary(libraryId);
        for(Animation anim : anims){
            lib.add(anim);
        }
        return lib;
    }
    
    private static List loadAnimations(
            List files, AnimationFileReader reader){
        List anims = new ArrayList(files.size());
        for(File file : files){
            try{
                Animation anim = reader.readAnimation(file.getAbsolutePath());
                if(anim != null){
                    anim.setVersion(file.getName(), anim.getVersion().getNumber());
                    anims.add(anim);
                }
            }catch(Exception ex){
                theLogger.log(Level.WARNING, "Could not load animation at " + 
                        file.getAbsolutePath(), ex);
            }
        }
        return anims;
    }
    
    private static List getFiles(
            File animDir, FilenameFilter filenameFilter, boolean recursive){
        if(!animDir.exists()){
            throw new IllegalArgumentException("Cannot find dir: " + animDir);
        }else if(!animDir.isDirectory()){
            throw new IllegalArgumentException("Not a dir: " + animDir);
        }
        File[] files;
        if(filenameFilter == null){
            files = animDir.listFiles();
        }else{
            files = animDir.listFiles(filenameFilter);
        }
        List fileList = new ArrayList(files.length);
        List dirList = new ArrayList();
        for(File f : files){
            if(f.isFile()){
                fileList.add(f);
            }else if(f.isDirectory()){
                dirList.add(f);
            }
        }
        if(recursive){
            for(File dir : dirList){
                fileList.addAll(getFiles(dir, filenameFilter, recursive));
            }
        }
        return fileList;
    }
}