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/*
 * Copyright 2000,2005 wingS development team.
 *
 * This file is part of wingS (http://wingsframework.org).
 *
 * wingS is free software; you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License
 * as published by the Free Software Foundation; either version 2.1
 * of the License, or (at your option) any later version.
 *
 * Please see COPYING for the complete licence.
 */
package org.wings.io;

import java.io.IOException;
import java.io.OutputStream;
import java.io.PrintStream;

/**
 * A Device encapsulating a ServletOutputStream
 *
 * @author Holger Engels
 */
public final class OutputStreamDevice implements Device {
    private PrintStream out;


    public OutputStreamDevice(OutputStream out) {
        this.out = new PrintStream(out);
    }

    @Override
    public boolean isSizePreserving() { return true; }

    /**
     * Flush this Stream.
     */
    @Override
    public void flush() throws IOException {
        out.flush();
    }

    @Override
    public void close() throws IOException {
        out.close();
    }

    /**
     * Print a String.
     */
    @Override
    public Device print(String s) throws IOException {
        if (s == null)
            out.print("null");
        else
            out.print(s);
        return this;
    }

    /**
     * Print an integer.
     */
    @Override
    public Device print(int i) throws IOException {
        out.print(i);
        return this;
    }

    /**
     * Print any Object
     */
    @Override
    public Device print(Object o) throws IOException {
        if (o == null)
            out.print("null");
        else
            out.print(o.toString());
        return this;
    }

    /**
     * Print a character.
     */
    @Override
    public Device print(char c) throws IOException {
        out.print(c);
        return this;
    }

    /**
     * Print an array of chars.
     */
    @Override
    public Device print(char... c) throws IOException {
        return print(c, 0, c.length - 1);
    }

    /**
     * Print a character array.
     */
    @Override
    public Device print(char[] c, int start, int len) throws IOException {
        final int end = start + len;
        for (int i = start; i < end; ++i)
            out.print(c[i]);
        return this;
    }

    /**
     * Writes the specified byte to this data output stream.
     */
    @Override
    public Device write(int c) throws IOException {
        out.write(c);
        return this;
    }

    /**
     * Writes b.length bytes from the specified byte array to this
     * output stream.
     */
    @Override
    public Device write(byte... b) throws IOException {
        out.write(b);
        return this;
    }

    /**
     * Writes len bytes from the specified byte array starting at offset
     * off to this output stream.
     */
    @Override
    public Device write(byte b[], int off, int len) throws IOException {
        out.write(b, off, len);
        return this;
    }
}