Java OutputStream Write String writeString(ByteArrayOutputStream baos, String s)

Description

write String

License

Open Source License

Declaration

public static void writeString(ByteArrayOutputStream baos, String s) 

Method Source Code

//package com.java2s;
//* Licensed Materials - Property of IBM, Miracle A/S, and            *

import java.io.ByteArrayOutputStream;

import java.io.UnsupportedEncodingException;

public class Main {
    public static void writeString(ByteArrayOutputStream baos, String s) {
        try {//from  w  w  w.  j av a2  s  . c  o m
            writeData(baos, s.getBytes("UTF-8"));
        } catch (UnsupportedEncodingException e) {
            throw new RuntimeException("Cannot write string", e);
        }
    }

    public static void writeData(ByteArrayOutputStream baos, byte[] data) {
        writeLength(baos, data.length);
        baos.write(data, 0, data.length);
    }

    public static void writeLength(ByteArrayOutputStream baos, int len) {
        if (len < 0) {
            throw new RuntimeException("Invalid length < 0");
        }
        if (len <= 127) {
            //MSB = 0
            baos.write(len);
        } else if (len <= 16383) {
            // MSB = 10
            int lowbyte = len % 64;
            int highbyte = len / 64;
            baos.write(lowbyte + 128);
            baos.write(highbyte);
        } else if (len <= 2097151) {
            // MSB = 110
            int lowbyte = len % 32;
            int midbyte = (len / 32) % 256;
            int highbyte = len / 32 / 256;
            baos.write(lowbyte + 128 + 64);
            baos.write(midbyte);
            baos.write(highbyte);
        } else {
            throw new RuntimeException("Invalid length > 2^21-1");
        }
    }
}

Related

1. writeString(final OutputStream output, final String s)
2. writeString(ObjectOutputStream stream, String string)
3. writeString(OutputStream os, String request, String charsetName)
4. writeString(OutputStream os, String s)