From bcf1eacb8f2bfcd3ca8f3d96e326756c8345903f Mon Sep 17 00:00:00 2001 From: eschaeffer Date: Fri, 11 Aug 2000 14:30:38 +0000 Subject: [PATCH] Factory for ImageReader classes git-svn-id: https://svn.apache.org/repos/asf/xmlgraphics/fop/trunk@193634 13f79535-47bb-0310-9956-ffa450edef68 --- .../image/analyser/ImageReaderFactory.java | 95 +++++++++++++++++++ 1 file changed, 95 insertions(+) create mode 100644 src/org/apache/fop/image/analyser/ImageReaderFactory.java diff --git a/src/org/apache/fop/image/analyser/ImageReaderFactory.java b/src/org/apache/fop/image/analyser/ImageReaderFactory.java new file mode 100644 index 000000000..85a72fc6a --- /dev/null +++ b/src/org/apache/fop/image/analyser/ImageReaderFactory.java @@ -0,0 +1,95 @@ +/* + ============================================================================ + The Apache Software License, Version 1.1 + ============================================================================ + Copyright (C) 1999 The Apache Software Foundation. All rights reserved. + Redistribution and use in source and binary forms, with or without modifica- + tion, are permitted provided that the following conditions are met: + 1. Redistributions of source code must retain the above copyright notice, + this list of conditions and the following disclaimer. + 2. Redistributions in binary form must reproduce the above copyright notice, + this list of conditions and the following disclaimer in the documentation + and/or other materials provided with the distribution. + 3. The end-user documentation included with the redistribution, if any, must + include the following acknowledgment: "This product includes software + developed by the Apache Software Foundation (http://www.apache.org/)." + Alternately, this acknowledgment may appear in the software itself, if + and wherever such third-party acknowledgments normally appear. + 4. The names "Fop" and "Apache Software Foundation" must not be used to + endorse or promote products derived from this software without prior + written permission. For written permission, please contact + apache@apache.org. + 5. Products derived from this software may not be called "Apache", nor may + "Apache" appear in their name, without prior written permission of the + Apache Software Foundation. + THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES, + INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND + FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE + APACHE SOFTWARE FOUNDATION OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, + INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLU- + DING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS + OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON + ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + This software consists of voluntary contributions made by many individuals + on behalf of the Apache Software Foundation and was originally created by + James Tauber . For more information on the Apache + Software Foundation, please see . + */ + +package org.apache.fop.image.analyser; + +// Java +import java.io.InputStream; +import java.io.BufferedInputStream; +import java.io.IOException; +import java.util.Iterator; +import java.util.ArrayList; + +// FOP +import org.apache.fop.image.FopImageException; + +/** + * Factory for ImageReader objects. + * @author Pankaj Narula + * @version 1.0 + */ +public class ImageReaderFactory { + static protected ArrayList formats = null; + + /** + * ImageReader maker. + * @param in image input stream + * @return ImageReader object + * @exception FopImageException an error occured during creation or + * image type is not supported + */ + static public ImageReader Make(InputStream in) + throws FopImageException { + + // need to use a config file and remove static methods + formats = new ArrayList(); + formats.add(new JPEGReader()); + formats.add(new BMPReader()); + formats.add(new GIFReader()); + formats.add(new PNGReader()); + // + + ImageReader reader; + BufferedInputStream bis = new BufferedInputStream(in); + Iterator itr = formats.iterator(); + try { + while (itr.hasNext()) { + reader = (ImageReader) itr.next(); + if (reader.verifySignature(bis)) { + return reader; + } + } + } catch (IOException ex) { + throw new FopImageException(ex.getMessage()); + } + return null; + } +} + -- 2.39.5