inputmeta.java

java itext java itext java itext

/*
 * $Id: InputMeta.java,v 1.4 2001/12/10 13:53:22 blowagie Exp $
 * $Name:  $
 *
 * Copyright 2001 by Paulo Soares.
 *
 * This library is free software; you can redistribute it and/or modify it
 * under the terms of the GNU Library General Public License as published
 * by the Free Software Foundation; either version 2 of the License, or any
 * later version.
 *
 * This library is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
 * FOR A PARTICULAR PURPOSE. See the GNU Library general Public License for more
 * details.
 *
 * You should have received a copy of the GNU Library General Public License along
 * with this library; if not, write to the Free Foundation, Inc., 59 Temple Place,
 * Suite 330, Boston, MA 02111-1307 USA.
 *
 * If you didn't download this code from the following link, you should check if
 * you aren't using an obsolete version:
 * http://www.lowagie.com/iText/
 *
 * ir-arch Bruno Lowagie,
 * Adolf Baeyensstraat 121
 * 9040 Sint-Amandsberg
 * BELGIUM
 * tel. [phone]
 * [e-mail]
 *
 */

package com.lowagie.text.pdf.wmf;

import java.io.*;
import java.awt.Color;

public class InputMeta {
    
    InputStream in;
    int length;
    
    public InputMeta(InputStream in) {
        this.in = in;
    }

    public int readWord() throws IOException{
        length += 2;
        int k1 = in.read();
        if (k1 < 0)
            return 0;
        return (k1 + (in.read() << 8)) & 0xffff;
    }

    public int readShort() throws IOException{
        int k = readWord();
        if (k > 0x7fff)
            k -= 0x10000;
        return k;
    }

    public int readInt() throws IOException{
        length += 4;
        int k1 = in.read();
        if (k1 < 0)
            return 0;
        int k2 = in.read() << 8;
        int k3 = in.read() << 16;
        return k1 + k2 + k3 + (in.read() << 24);
    }
    
    public int readByte() throws IOException{
        ++length;
        return in.read() & 0xff;
    }
    
    public void skip(int len) throws IOException{
        length += len;
        while (len > 0) {
            len -= in.skip(len);
        }
    }
    
    public int getLength() {
        return length;
    }
    
    public Color readColor() throws IOException{
        int red = readByte();
        int green = readByte();
        int blue = readByte();
        readByte();
        return new Color(red, green, blue);
    }
}