mirror of
https://github.com/yacy/yacy_search_server.git
synced 2024-09-21 00:00:13 +02:00
0cbda0b2b8
- replaced some length() > 0 and size() > 0 with !isEmpty() - cannot be done automatically - implemented some isEmpty() methods
314 lines
13 KiB
Java
314 lines
13 KiB
Java
// genericImageParser.java
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// (C) 2009 by Michael Peter Christen; mc@yacy.net, Frankfurt a. M., Germany
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// first published 16.10.2009 on http://yacy.net
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//
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// This is a part of YaCy, a peer-to-peer based web search engine
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//
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// $LastChangedDate$
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// $LastChangedRevision$
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// $LastChangedBy$
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//
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// LICENSE
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//
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// This program is free software; you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation; either version 2 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program; if not, write to the Free Software
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// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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package net.yacy.document.parser.images;
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import java.awt.image.BufferedImage;
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import java.io.ByteArrayInputStream;
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import java.io.File;
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import java.io.FileInputStream;
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import java.io.FileNotFoundException;
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import java.io.IOException;
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import java.io.InputStream;
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import java.net.MalformedURLException;
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import java.util.HashMap;
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import java.util.HashSet;
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import java.util.Iterator;
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import java.util.Properties;
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import java.util.Set;
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import javax.imageio.ImageIO;
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import net.yacy.cora.document.MultiProtocolURI;
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import net.yacy.document.AbstractParser;
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import net.yacy.document.Document;
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import net.yacy.document.Parser;
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import net.yacy.document.parser.html.ImageEntry;
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import net.yacy.document.parser.images.bmpParser.IMAGEMAP;
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import net.yacy.kelondro.data.meta.DigestURI;
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import net.yacy.kelondro.logging.Log;
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import net.yacy.kelondro.util.FileUtils;
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import com.drew.imaging.jpeg.JpegProcessingException;
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import com.drew.imaging.jpeg.JpegSegmentReader;
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import com.drew.metadata.Directory;
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import com.drew.metadata.Metadata;
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import com.drew.metadata.MetadataException;
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import com.drew.metadata.Tag;
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import com.drew.metadata.exif.ExifReader;
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import com.drew.metadata.iptc.IptcReader;
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public class genericImageParser extends AbstractParser implements Parser {
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/**
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* a list of mime types that are supported by this parser class
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* @see #getSupportedMimeTypes()
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*/
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public static final Set<String> SUPPORTED_MIME_TYPES = new HashSet<String>();
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public static final Set<String> SUPPORTED_EXTENSIONS = new HashSet<String>();
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static {
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SUPPORTED_EXTENSIONS.add("png");
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SUPPORTED_EXTENSIONS.add("gif");
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SUPPORTED_EXTENSIONS.add("jpg");
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SUPPORTED_EXTENSIONS.add("jpeg");
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SUPPORTED_EXTENSIONS.add("jpe");
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SUPPORTED_EXTENSIONS.add("bmp");
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SUPPORTED_MIME_TYPES.add("image/png");
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SUPPORTED_MIME_TYPES.add("image/gif");
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SUPPORTED_MIME_TYPES.add("image/jpeg");
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SUPPORTED_MIME_TYPES.add("image/jpg"); // this is in fact a 'wrong' mime type. We leave it here because that is a common error that occurs in the internet frequently
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SUPPORTED_MIME_TYPES.add("image/bmp");
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}
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public genericImageParser() {
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super("Generic Image Parser");
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}
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@Override
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public Document[] parse(
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final DigestURI location,
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final String mimeType,
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final String documentCharset,
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final InputStream sourceStream) throws Parser.Failure, InterruptedException {
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ImageInfo ii = null;
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String title = null;
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String author = null;
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String keywords = null;
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String description = null;
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if (mimeType.equals("image/bmp") ||
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location.getFileExtension().equals("bmp")) {
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byte[] b;
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try {
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b = FileUtils.read(sourceStream);
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} catch (final IOException e) {
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Log.logException(e);
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throw new Parser.Failure(e.getMessage(), location);
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}
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final IMAGEMAP imap = bmpParser.parse(b);
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ii = parseJavaImage(location, imap.getImage());
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} else if (mimeType.equals("image/jpg") ||
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location.getFileExtension().equals("jpg") ||
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location.getFileExtension().equals("jpeg") ||
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location.getFileExtension().equals("jpe")) {
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// use the exif parser from
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// http://www.drewnoakes.com/drewnoakes.com/code/exif/
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// javadoc is at: http://www.drewnoakes.com/drewnoakes.com/code/exif/javadoc/
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// a tutorial is at: http://www.drewnoakes.com/drewnoakes.com/code/exif/sampleUsage.html
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byte[] b;
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try {
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b = FileUtils.read(sourceStream);
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} catch (final IOException e) {
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Log.logException(e);
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throw new Parser.Failure(e.getMessage(), location);
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}
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ii = parseJavaImage(location, new ByteArrayInputStream(b));
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JpegSegmentReader segmentReader;
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try {
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segmentReader = new JpegSegmentReader(new ByteArrayInputStream(b));
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final byte[] exifSegment = segmentReader.readSegment(JpegSegmentReader.SEGMENT_APP1);
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final byte[] iptcSegment = segmentReader.readSegment(JpegSegmentReader.SEGMENT_APPD);
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final Metadata metadata = new Metadata();
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new ExifReader(exifSegment).extract(metadata);
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new IptcReader(iptcSegment).extract(metadata);
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@SuppressWarnings("unchecked")
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final
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Iterator<Directory> directories = metadata.getDirectoryIterator();
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final HashMap<String, String> props = new HashMap<String, String>();
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while (directories.hasNext()) {
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final Directory directory = directories.next();
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@SuppressWarnings("unchecked")
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final
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Iterator<Tag> tags = directory.getTagIterator();
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while (tags.hasNext()) {
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final Tag tag = tags.next();
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try {
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props.put(tag.getTagName(), tag.getDescription());
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ii.info.append(tag.getTagName() + ": " + tag.getDescription() + " .\n");
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} catch (final MetadataException e) {
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//Log.logException(e);
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}
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}
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title = props.get("Image Description");
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if (title == null || title.isEmpty()) title = props.get("Headline");
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if (title == null || title.isEmpty()) title = props.get("Object Name");
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author = props.get("Artist");
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if (author == null || author.isEmpty()) author = props.get("Writer/Editor");
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if (author == null || author.isEmpty()) author = props.get("By-line");
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if (author == null || author.isEmpty()) author = props.get("Credit");
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if (author == null || author.isEmpty()) author = props.get("Make");
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keywords = props.get("Keywords");
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if (keywords == null || keywords.isEmpty()) keywords = props.get("Category");
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if (keywords == null || keywords.isEmpty()) keywords = props.get("Supplemental Category(s)");
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description = props.get("Caption/Abstract");
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if (description == null || description.isEmpty()) description = props.get("Country/Primary Location");
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if (description == null || description.isEmpty()) description = props.get("Province/State");
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if (description == null || description.isEmpty()) description = props.get("Copyright Notice");
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}
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} catch (final JpegProcessingException e) {
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//Log.logException(e);
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// just ignore
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}
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} else {
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ii = parseJavaImage(location, sourceStream);
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}
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final HashSet<String> languages = new HashSet<String>();
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final HashMap<MultiProtocolURI, Properties> anchors = new HashMap<MultiProtocolURI, Properties>();
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final HashMap<MultiProtocolURI, ImageEntry> images = new HashMap<MultiProtocolURI, ImageEntry>();
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// add this image to the map of images
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final String infoString = ii.info.toString();
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images.put(ii.location, new ImageEntry(location, "", ii.width, ii.height, -1));
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if (title == null || title.isEmpty()) title = MultiProtocolURI.unescape(location.getFileName());
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return new Document[]{new Document(
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location,
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mimeType,
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"UTF-8",
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this,
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languages,
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keywords == null ? new String[]{} : keywords.split(keywords.indexOf(',') > 0 ? "," : " "), // keywords
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title, // title
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author == null ? "" : author, // author
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location.getHost(), // Publisher
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new String[]{}, // sections
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description == null ? "" : description, // description
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0.0f, 0.0f, // TODO parse location
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infoString, // content text
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anchors, // anchors
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null,
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images,
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false)}; // images
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}
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@Override
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public Set<String> supportedMimeTypes() {
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return SUPPORTED_MIME_TYPES;
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}
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@Override
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public Set<String> supportedExtensions() {
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return SUPPORTED_EXTENSIONS;
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}
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public static ImageInfo parseJavaImage(
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final MultiProtocolURI location,
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final InputStream sourceStream) throws Parser.Failure {
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BufferedImage image = null;
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try {
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ImageIO.setUseCache(false); // do not write a cache to disc; keep in RAM
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image = ImageIO.read(sourceStream);
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} catch (final Throwable e) {
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//Log.logException(e);
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throw new Parser.Failure(e.getMessage(), location);
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}
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if (image == null) throw new Parser.Failure("ImageIO returned NULL", location);
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return parseJavaImage(location, image);
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}
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public static ImageInfo parseJavaImage(
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final MultiProtocolURI location,
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final BufferedImage image) {
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final ImageInfo ii = new ImageInfo(location);
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ii.image = image;
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// scan the image
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ii.height = ii.image.getHeight();
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ii.width = ii.image.getWidth();
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/*
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Raster raster = image.getData();
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int[] pixel = raster.getPixel(0, 0, (int[])null);
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long[] average = new long[pixel.length];
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for (int i = 0; i < average.length; i++) average[i] = 0L;
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int pc = 0;
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for (int x = width / 4; x < 3 * width / 4; x = x + 2) {
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for (int y = height / 4; y < 3 * height / 4; y = y + 2) {
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pixel = raster.getPixel(x, y, pixel);
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for (int i = 0; i < average.length; i++) average[i] += pixel[i];
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pc++;
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}
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}
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*/
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// get image properties
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String [] propNames = ii.image.getPropertyNames();
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if (propNames == null) propNames = new String[0];
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ii.info.append("\n");
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for (final String propName: propNames) {
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ii.info.append(propName).append(" = ").append(ii.image.getProperty(propName)).append(" .\n");
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}
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// append also properties that we measured
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ii.info.append("width").append(": ").append(Integer.toString(ii.width)).append(" .\n");
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ii.info.append("height").append(": ").append(Integer.toString(ii.height)).append(" .\n");
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return ii;
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}
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public static class ImageInfo {
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public MultiProtocolURI location;
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public BufferedImage image;
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public StringBuilder info;
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public int height;
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public int width;
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public ImageInfo(final MultiProtocolURI location) {
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this.location = location;
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this.image = null;
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this.info = new StringBuilder();
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this.height = -1;
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this.width = -1;
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}
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}
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public static void main(final String[] args) {
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final File image = new File(args[0]);
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final genericImageParser parser = new genericImageParser();
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DigestURI uri;
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try {
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uri = new DigestURI("http://localhost/" + image.getName());
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final Document[] document = parser.parse(uri, "image/" + uri.getFileExtension(), "UTF-8", new FileInputStream(image));
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System.out.println(document[0].toString());
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} catch (final MalformedURLException e) {
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e.printStackTrace();
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} catch (final FileNotFoundException e) {
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e.printStackTrace();
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} catch (final Parser.Failure e) {
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e.printStackTrace();
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} catch (final InterruptedException e) {
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e.printStackTrace();
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}
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}
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}
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