Android Open Source - mclib Advanced Stream Helper

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License

The source code is released under:

Apache License, Version 2.0 FoundationProjectsPeopleGet InvolvedDownloadSupport ApacheHome ? Licenses Apache License Version 2.0, January 2004 http://www.apache.org/licenses/ TERMS AND CONDITION...

Java Source Code

/*
   Copyright 2012 Mikhail Chabanov//from ww w .  j  a v  a2 s.c  o  m

   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 mc.lib.stream;

import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;

import android.util.Log;

public class AdvancedStreamHelper
{
    private static final String LOGTAG = AdvancedStreamHelper.class.getSimpleName();

    public static String readStreamWithBuffer(InputStream src, String encoding, int buffSize) throws IOException
    {
        StringBuilder res = new StringBuilder();
        InputStreamReader isr = new InputStreamReader(src, encoding);
        char[] buff = new char[buffSize / (Character.SIZE / Byte.SIZE)];
        int size = isr.read(buff);
        while(size > 0)
        {
            res.append(buff, 0, size);
            size = isr.read(buff);
        }
        isr.close();
        return res.toString();
    }

    public static String readStreamWithBuffer(InputStream src, String encoding, int buffSize, int readingTimeout) throws IOException
    {
        StringBuilder res = new StringBuilder();
        InputStreamReader isr = new InputStreamReader(src, encoding);
        char[] buff = new char[buffSize / (Character.SIZE / Byte.SIZE)];
        int size = isr.read(buff);
        if(size < 0 && readingTimeout > 0)
        {
            wait(readingTimeout);
            size = isr.read(buff);
        }
        while(size > 0)
        {
            res.append(buff, 0, size);
            size = isr.read(buff);
            if(size < 0 && readingTimeout > 0)
            {
                wait(readingTimeout);
                size = isr.read(buff);
            }
        }
        isr.close();
        return res.toString();
    }

    public static void copyStream(InputStream in, OutputStream out, int buffSize) throws IOException
    {
        byte[] buffer = new byte[buffSize];
        int size = in.read(buffer);
        while(size != -1)
        {
            out.write(buffer, 0, size);
            size = in.read(buffer);
        }
    }

    public static void copyStream(InputStream in, OutputStream out, int buffSize, int readingTimeout) throws IOException
    {
        byte[] buffer = new byte[buffSize];
        int size = in.read(buffer);
        if(size == -1 && readingTimeout > 0)
        {
            wait(readingTimeout);
            size = in.read(buffer);
        }
        while(size != -1)
        {
            out.write(buffer, 0, size);
            size = in.read(buffer);
            if(size == -1 && readingTimeout > 0)
            {
                wait(readingTimeout);
                size = in.read(buffer);
            }
        }
    }

    public static String readStreamWithoutBuffer(InputStream src) throws IOException
    {
        StringBuilder sb = new StringBuilder();
        InputStreamReader is = new InputStreamReader(src);
        char c = (char)is.read();
        while(c != -1)
        {
            sb.append(c);
            c = (char)is.read();
        }
        return sb.toString();
    }

    private static void wait(int waitTime)
    {
        try
        {
            Thread.sleep(waitTime);
        }
        catch(InterruptedException e)
        {
            Log.w(LOGTAG, "Stream reading timeout interupted");
        }
    }
}

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