Android InputStream Read readFully(InputStream in)

Description

read Fully

License

Sun Public License Notice

Declaration

public static byte[] readFully(InputStream in) throws IOException 

Method Source Code

//package com.java2s;
/*****************************************************************************
 *                                                                           *
 *  This file is part of the tna framework distribution.                     *
 *  Documentation and updates may be get from  biaoping.yin the author of    *
 *  this framework                          *
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 *  Sun Public License Notice:                                               *
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 *  The contents of this file are subject to the Sun Public License Version  *
 *  1.0 (the "License"); you may not use this file except in compliance with *
 *  the License. A copy of the License is available at http://www.sun.com    *
 *                                                                           *
 *  The Original Code is tag. The Initial Developer of the Original          *
 *  Code is biaoping yin. Portions created by biaoping yin are Copyright     *
 *  (C) 2000.  All Rights Reserved.                                          *
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 *  GNU Public License Notice:                                               *
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 *  Alternatively, the contents of this file may be used under the terms of  *
 *  the GNU Lesser General Public License (the "LGPL"), in which case the    *
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 *  biaoping.yin (yin-bp@163.com)                                            *
 *  Author of Learning Java                                        *
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import java.io.BufferedReader;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;

import java.io.FileReader;

import java.io.IOException;
import java.io.InputStream;

public class Main {

    public static byte[] readFully(InputStream in) throws IOException {

        if (in instanceof ByteArrayInputStream) {
            // content can be read in one pass
            int size = in.available();
            byte[] bytes = new byte[size];

            // read in the bytes
            int offset = 0;
            int numRead = 0;
            while (offset < size) {
                numRead = in.read(bytes, offset, size - offset);
                if (numRead >= 0) {
                    offset += numRead;//from   www .  ja va 2s.  c om
                } else {
                    break;
                }
            }
            return bytes;
        }

        // copy buffer
        byte[] xfer = new byte[2048];
        // output buffer
        ByteArrayOutputStream out = new ByteArrayOutputStream(xfer.length);

        // transfer data from input to output in xfer-sized chunks.
        for (int bytesRead = in.read(xfer, 0, xfer.length); bytesRead >= 0; bytesRead = in
                .read(xfer, 0, xfer.length)) {
            if (bytesRead > 0) {
                out.write(xfer, 0, bytesRead);
            }
        }
        in.close();
        out.close();
        return out.toByteArray();
    }

    public static StringBuffer read(String file) throws Exception {
        BufferedReader in = null;
        StringBuffer sb = new StringBuffer();
        String s = null;
        StringBuffer stringbuffer;
        try {
            in = new BufferedReader(new FileReader(file));
            while ((s = in.readLine()) != null)
                sb.append(s).append('\n');
            stringbuffer = sb;
        } finally {
            if (in != null)
                in.close();
        }
        return stringbuffer;
    }
}

Related

1. ReadArrayOfStringPairs( FileInputStream stream)
2. ReadInt(FileInputStream stream)
3. ReadString(FileInputStream stream)
4. readContents(InputStream input, String encoding)
5. readFile(InputStream input)
6. readInputStreamToString(InputStream input, String enCoding)
7. writeToStream(InputStream in, OutputStream out, boolean closeOnExit)
8. readStream(InputStream in)
9. readStream(InputStream in)