画像ファイルを読ませると幅と高さを持ったTiBlobを返す

StupidimagereaderModule.java

/**
 * This file was auto-generated by the Titanium Module SDK helper for Android
 * Appcelerator Titanium Mobile
 * Copyright (c) 2009-2010 by Appcelerator, Inc. All Rights Reserved.
 * Licensed under the terms of the Apache Public License
 * Please see the LICENSE included with this distribution for details.
 *
 * var mod = require('org.selfkleptomaniac.ti.mod.stupidimagereader');
 * var image = "washingmachine.jpg";
 * 
 * var blob = mod.readImage("Resources/" + image); //Resources以下のファイルはこうやって読み込んでね
 * Ti.API.info("++++++++++++++++++++start+++++++++++++++++++");
 * Ti.API.info(image);
 * Ti.API.info(JSON.stringify(blob));
 * if(blob){
 *   Ti.API.info(blob.width);
 *   Ti.API.info(blob.height);
 * }
 * Ti.API.info("++++++++++++++++++++end+++++++++++++++++++");
 * 
 * 
 * var old_file = Ti.Filesystem.getFile(Ti.Filesystem.resourcesDirectory + image);
 * var new_file = Ti.Filesystem.tempDirectory+ "test.jpg";
 * old_file.copy(new_file);
 * 
 * var new_data = Ti.Filesystem.getFile(new_file);
 * if(new_data.exists()){
 *   var blob2 = mod.readImage(new_file);
 *   Ti.API.info("++++++++++++++++++++start+++++++++++++++++++");
 *   Ti.API.info(new_file);
 *   Ti.API.info(JSON.stringify(blob2));
 *   if(blob2){
 *     Ti.API.info(blob2.width);
 *     Ti.API.info(blob2.height);
 *   }
 *   Ti.API.info("++++++++++++++++++++end+++++++++++++++++++");
 * }else{
 *   Ti.API.info("++++++++++++++++++++error+++++++++++++++++++");
 *   Ti.API.info("FILE NOT COPIED");
 *   Ti.API.info("++++++++++++++++++++error+++++++++++++++++++");
 * }
 */
package org.selfkleptomaniac.ti.mod.stupidimagereader;

import org.appcelerator.kroll.KrollModule;
import org.appcelerator.kroll.annotations.Kroll;

import org.appcelerator.titanium.TiApplication;
import org.appcelerator.kroll.common.Log;
import org.appcelerator.kroll.common.TiConfig;

import org.appcelerator.titanium.TiBlob;

import android.app.Activity;
import java.io.IOException;
import java.io.InputStream;
import java.io.FileInputStream;
import java.io.OutputStream;
import java.io.FileOutputStream;
import java.io.File;
import java.util.regex.*;
import java.nio.channels.FileChannel;

import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.content.res.AssetManager;


@Kroll.module(name="Stupidimagereader", id="org.selfkleptomaniac.ti.mod.stupidimagereader")
public class StupidimagereaderModule extends KrollModule
{

	// Standard Debugging variables
	private static final String LCAT = "StupidimagereaderModule";
	private static final boolean DBG = TiConfig.LOGD;

	// You can define constants with @Kroll.constant, for example:
	// @Kroll.constant public static final String EXTERNAL_NAME = value;

	public StupidimagereaderModule()
	{
		super();
	}

	@Kroll.onAppCreate
	public static void onAppCreate(TiApplication app)
	{
		Log.d(LCAT, "inside onAppCreate");
		// put module init code that needs to run when the application is created
	}

	// Methods
	@Kroll.method
	public String example()
	{
		Log.d(LCAT, "example called");
		return "hello world";
	}

	// Properties
	@Kroll.getProperty
	public String getExampleProp()
	{
		Log.d(LCAT, "get example property");
		return "hello world";
	}


	@Kroll.setProperty
	public void setExampleProp(String value) {
		Log.d(LCAT, "set example property: " + value);
	}

	@Kroll.method
	public TiBlob readImage(String path){
		String fpath = null;
		String save_path = null;
		InputStream is = null;

		if(!path.startsWith("Resources")){
			Pattern pattern = Pattern.compile("((file|content|appdata-private|app)://)");
			Matcher matcher = pattern.matcher(path);
			path = matcher.replaceFirst("");
			if (!path.startsWith("/")) {
				path = "/" + path;
			}
		}
		fpath = path;
		File save_path_base = new File(path);
		save_path = "stupidimagereader/" + save_path_base.getName();

		String toFile = "/data/data/"+ TiApplication.getInstance().getPackageName() +"/app_appdata/" + save_path;
		try{
			copyFile(path, toFile);
			TiBlob image = null;
			try{
				BitmapFactory.Options opts = new BitmapFactory.Options();
				opts.inJustDecodeBounds = true;
				opts.inJustDecodeBounds = false;
				Bitmap image_base = BitmapFactory.decodeFile(toFile, opts);
				image = returnBlob(image_base);
			}catch(NullPointerException e){
				Log.d(LCAT, "Nullpo");
			}finally{
				File cleanup = new File(toFile);
				cleanup.delete();
			}
			return image;

		}catch(IOException e){
			Log.d(LCAT, "IOPO");
			Log.d(LCAT, fpath);
			Log.d(LCAT, toFile);
			return null;
		}
	}

	private TiBlob returnBlob(Bitmap image_base) throws NullPointerException {
		TiBlob blob = TiBlob.blobFromImage(image_base);
		return blob;
	}

	private void copyFile(String src, String dstFilePath) throws IOException{
		File dstFile = new File(dstFilePath);
		String parent_dir = dstFile.getParent();
		File dir = new File(parent_dir);
		dir.mkdirs();

		if(src.startsWith("Resources/")){
			Activity activity = getActivity();
			AssetManager as = activity.getResources().getAssets();
			InputStream input = as.open(src);
			OutputStream output = null;
			output = new FileOutputStream(dstFile);
			int DEFAULT_BUFFER_SIZE = 1024 * 4;
			byte[] buffer = new byte[DEFAULT_BUFFER_SIZE];
			int n = 0;
			while (-1 != (n = input.read(buffer))) {
				output.write(buffer, 0, n);
			}
			input.close();
			output.close();
		}else{
			FileChannel inChannel = new FileInputStream(src).getChannel();

			FileChannel outChannel = new FileOutputStream(dstFilePath).getChannel();
			try {
				inChannel.transferTo(0, inChannel.size(), outChannel);
			} finally {
				if (inChannel != null){
					inChannel.close();
				}
				if (outChannel != null){
					outChannel.close();
				}
			}
		}
	}

}