001/* 002 * $Id: InputMeta.java 4784 2011-03-15 08:33:00Z blowagie $ 003 * 004 * This file is part of the iText (R) project. 005 * Copyright (c) 1998-2011 1T3XT BVBA 006 * Authors: Bruno Lowagie, Paulo Soares, et al. 007 * 008 * This program is free software; you can redistribute it and/or modify 009 * it under the terms of the GNU Affero General Public License version 3 010 * as published by the Free Software Foundation with the addition of the 011 * following permission added to Section 15 as permitted in Section 7(a): 012 * FOR ANY PART OF THE COVERED WORK IN WHICH THE COPYRIGHT IS OWNED BY 1T3XT, 013 * 1T3XT DISCLAIMS THE WARRANTY OF NON INFRINGEMENT OF THIRD PARTY RIGHTS. 014 * 015 * This program is distributed in the hope that it will be useful, but 016 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY 017 * or FITNESS FOR A PARTICULAR PURPOSE. 018 * See the GNU Affero General Public License for more details. 019 * You should have received a copy of the GNU Affero General Public License 020 * along with this program; if not, see http://www.gnu.org/licenses or write to 021 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, 022 * Boston, MA, 02110-1301 USA, or download the license from the following URL: 023 * http://itextpdf.com/terms-of-use/ 024 * 025 * The interactive user interfaces in modified source and object code versions 026 * of this program must display Appropriate Legal Notices, as required under 027 * Section 5 of the GNU Affero General Public License. 028 * 029 * In accordance with Section 7(b) of the GNU Affero General Public License, 030 * a covered work must retain the producer line in every PDF that is created 031 * or manipulated using iText. 032 * 033 * You can be released from the requirements of the license by purchasing 034 * a commercial license. Buying such a license is mandatory as soon as you 035 * develop commercial activities involving the iText software without 036 * disclosing the source code of your own applications. 037 * These activities include: offering paid services to customers as an ASP, 038 * serving PDFs on the fly in a web application, shipping iText with a closed 039 * source product. 040 * 041 * For more information, please contact iText Software Corp. at this 042 * address: sales@itextpdf.com 043 */ 044package com.itextpdf.text.pdf.codec.wmf; 045 046import com.itextpdf.text.BaseColor; 047import java.io.IOException; 048import java.io.InputStream; 049 050import com.itextpdf.text.Utilities; 051 052public class InputMeta { 053 054 InputStream in; 055 int length; 056 057 public InputMeta(InputStream in) { 058 this.in = in; 059 } 060 061 public int readWord() throws IOException{ 062 length += 2; 063 int k1 = in.read(); 064 if (k1 < 0) 065 return 0; 066 return (k1 + (in.read() << 8)) & 0xffff; 067 } 068 069 public int readShort() throws IOException{ 070 int k = readWord(); 071 if (k > 0x7fff) 072 k -= 0x10000; 073 return k; 074 } 075 076 public int readInt() throws IOException{ 077 length += 4; 078 int k1 = in.read(); 079 if (k1 < 0) 080 return 0; 081 int k2 = in.read() << 8; 082 int k3 = in.read() << 16; 083 return k1 + k2 + k3 + (in.read() << 24); 084 } 085 086 public int readByte() throws IOException{ 087 ++length; 088 return in.read() & 0xff; 089 } 090 091 public void skip(int len) throws IOException{ 092 length += len; 093 Utilities.skip(in, len); 094 } 095 096 public int getLength() { 097 return length; 098 } 099 100 public BaseColor readColor() throws IOException{ 101 int red = readByte(); 102 int green = readByte(); 103 int blue = readByte(); 104 readByte(); 105 return new BaseColor(red, green, blue); 106 } 107}