reco.frame.tv.http.entityhandler.FileEntityHandler.java Source code

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Here is the source code for reco.frame.tv.http.entityhandler.FileEntityHandler.java

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/**
 *
 * 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 reco.frame.tv.http.entityhandler;

import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;

import org.apache.http.HttpEntity;

import android.content.Context;
import android.text.TextUtils;

public class FileEntityHandler {

    private boolean mStop = false;

    public boolean isStop() {
        return mStop;
    }

    public void setStop(boolean stop) {
        this.mStop = stop;
    }

    public Object handleEntity(Context appContext, HttpEntity entity, EntityCallBack callback, String target,
            boolean isResume) throws IOException {
        if (TextUtils.isEmpty(target) || target.trim().length() == 0)
            return null;

        File targetFile = new File(target);

        if (!targetFile.exists()) {
            targetFile.createNewFile();
        }

        if (mStop) {
            return targetFile;
        }

        long current = 0;
        FileOutputStream os = null;
        if (isResume) {
            current = targetFile.length();
            os = appContext.openFileOutput(target.substring(target.lastIndexOf("/") + 1),
                    Context.MODE_APPEND | Context.MODE_WORLD_READABLE);
            //os = new FileOutputStream(target, true);
        } else {
            os = appContext.openFileOutput(target.substring(target.lastIndexOf("/") + 1),
                    Context.MODE_WORLD_READABLE);
        }

        if (mStop) {
            return targetFile;
        }

        InputStream input = entity.getContent();
        long count = entity.getContentLength() + current;

        if (current >= count || mStop) {
            return targetFile;
        }

        int readLen = 0;
        byte[] buffer = new byte[1024];
        while (!mStop && !(current >= count) && ((readLen = input.read(buffer, 0, 1024)) > 0)) {//
            os.write(buffer, 0, readLen);
            current += readLen;
            callback.callBack(count, current, false);
        }
        callback.callBack(count, current, true);

        if (mStop && current < count) { //
            throw new IOException("user stop download thread");
        }

        return targetFile;
    }

}