mirror of
https://github.com/yacy/yacy_search_server.git
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1d8d51075c
- removed the plasma package. The name of that package came from a very early pre-version of YaCy, even before YaCy was named AnomicHTTPProxy. The Proxy project introduced search for cache contents using class files that had been developed during the plasma project. Information from 2002 about plasma can be found here: http://web.archive.org/web/20020802110827/http://anomic.de/AnomicPlasma/index.html We stil have one class that comes mostly unchanged from the plasma project, the Condenser class. But this is now part of the document package and all other classes in the plasma package can be assigned to other packages. - cleaned up the http package: better structure of that class and clean isolation of server and client classes. The old HTCache becomes part of the client sub-package of http. - because the plasmaSwitchboard is now part of the search package all servlets had to be touched to declare a different package source. git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@6232 6c8d7289-2bf4-0310-a012-ef5d649a1542
296 lines
14 KiB
Java
296 lines
14 KiB
Java
//vcfParser.java
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//------------------------
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//part of YaCy
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//(C) by Michael Peter Christen; mc@yacy.net
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//first published on http://www.anomic.de
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//Frankfurt, Germany, 2005
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//
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//this file is contributed by Martin Thelian
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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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//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 de.anomic.document.parser;
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import java.io.BufferedReader;
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import java.io.ByteArrayInputStream;
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import java.io.InputStream;
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import java.io.InputStreamReader;
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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.LinkedList;
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import java.util.Set;
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import de.anomic.crawler.retrieval.HTTPLoader;
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import de.anomic.document.AbstractParser;
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import de.anomic.document.Idiom;
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import de.anomic.document.ParserException;
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import de.anomic.document.Document;
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import de.anomic.http.client.Client;
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import de.anomic.http.metadata.HeaderFramework;
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import de.anomic.http.metadata.RequestHeader;
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import de.anomic.kelondro.order.Base64Order;
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import de.anomic.yacy.yacyURL;
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/**
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* Vcard specification: http://www.imc.org/pdi/vcard-21.txt
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* @author theli
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*
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*/
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public class vcfParser extends AbstractParser implements Idiom {
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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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* TODO: support of x-mozilla-cpt and x-mozilla-html tags
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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("vcf");
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SUPPORTED_MIME_TYPES.add("text/x-vcard");
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SUPPORTED_MIME_TYPES.add("application/vcard");
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SUPPORTED_MIME_TYPES.add("application/x-versit");
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SUPPORTED_MIME_TYPES.add("text/x-versit");
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SUPPORTED_MIME_TYPES.add("text/x-vcalendar");
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}
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public vcfParser() {
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super("vCard Parser");
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}
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public Set<String> supportedMimeTypes() {
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return SUPPORTED_MIME_TYPES;
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}
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public Set<String> supportedExtensions() {
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return SUPPORTED_EXTENSIONS;
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}
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public Document parse(final yacyURL url, final String mimeType, final String charset, final InputStream source) throws ParserException, InterruptedException {
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try {
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final StringBuilder parsedTitle = new StringBuilder();
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final StringBuilder parsedDataText = new StringBuilder();
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final HashMap<String, String> parsedData = new HashMap<String, String>();
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final HashMap<yacyURL, String> anchors = new HashMap<yacyURL, String>();
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final LinkedList<String> parsedNames = new LinkedList<String>();
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boolean useLastLine = false;
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int lineNr = 0;
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String line = null;
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final BufferedReader inputReader = (charset!=null)
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? new BufferedReader(new InputStreamReader(source,charset))
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: new BufferedReader(new InputStreamReader(source));
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while (true) {
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// check for interruption
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checkInterruption();
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// getting the next line
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if (!useLastLine) {
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line = inputReader.readLine();
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} else {
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useLastLine = false;
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}
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if (line == null) break;
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else if (line.length() == 0) continue;
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lineNr++;
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final int pos = line.indexOf(":");
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if (pos != -1) {
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final String key = line.substring(0,pos).trim().toUpperCase();
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String value = line.substring(pos+1).trim();
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String encoding = null;
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final String[] keyParts = key.split(";");
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if (keyParts.length > 1) {
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for (int i=0; i < keyParts.length; i++) {
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if (keyParts[i].toUpperCase().startsWith("ENCODING")) {
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encoding = keyParts[i].substring("ENCODING".length()+1);
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} else if (keyParts[i].toUpperCase().startsWith("QUOTED-PRINTABLE")) {
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encoding = "QUOTED-PRINTABLE";
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} else if (keyParts[i].toUpperCase().startsWith("BASE64")) {
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encoding = "BASE64";
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}
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}
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if (encoding != null) {
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try {
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if (encoding.equalsIgnoreCase("QUOTED-PRINTABLE")) {
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// if the value has multiple lines ...
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if (line.endsWith("=")) {
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do {
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value = value.substring(0,value.length()-1);
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line = inputReader.readLine();
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if (line == null) break;
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value += line;
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} while (line.endsWith("="));
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}
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value = decodeQuotedPrintable(value);
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} else if (encoding.equalsIgnoreCase("base64")) {
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do {
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line = inputReader.readLine();
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if (line == null) break;
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if (line.indexOf(":")!= -1) {
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// we have detected an illegal block end of the base64 data
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useLastLine = true;
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}
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if (!useLastLine) value += line.trim();
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else break;
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} while (line.length()!=0);
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value = Base64Order.standardCoder.decodeString(value);
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}
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} catch (final Exception ey) {
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// Encoding error: This could occure e.g. if the base64 doesn't
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// end with an empty newline
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//
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// We can simply ignore it.
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}
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}
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}
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if (key.equalsIgnoreCase("END")) {
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String name = null, title = null;
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// using the name of the current version as section headline
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if (parsedData.containsKey("FN")) {
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parsedNames.add(name = parsedData.get("FN"));
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} else if (parsedData.containsKey("N")) {
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parsedNames.add(name = parsedData.get("N"));
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} else {
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parsedNames.add(name = "unknown name");
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}
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// getting the vcard title
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if (parsedData.containsKey("TITLE")) {
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parsedNames.add(title = parsedData.get("TITLE"));
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}
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if (parsedTitle.length() > 0) parsedTitle.append(", ");
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parsedTitle.append((title==null)?name:name + " - " + title);
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// looping through the properties and add there values to
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// the text representation of the vCard
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final Iterator<String> iter = parsedData.values().iterator();
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while (iter.hasNext()) {
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value = iter.next();
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parsedDataText.append(value).append("\r\n");
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}
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parsedDataText.append("\r\n");
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parsedData.clear();
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} else if (key.toUpperCase().startsWith("URL")) {
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try {
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final yacyURL newURL = new yacyURL(value, null);
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anchors.put(newURL, newURL.toString());
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//parsedData.put(key,value);
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} catch (final MalformedURLException ex) {/* ignore this */}
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} else if (
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!key.equalsIgnoreCase("BEGIN") &&
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!key.equalsIgnoreCase("END") &&
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!key.equalsIgnoreCase("VERSION") &&
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!key.toUpperCase().startsWith("LOGO") &&
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!key.toUpperCase().startsWith("PHOTO") &&
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!key.toUpperCase().startsWith("SOUND") &&
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!key.toUpperCase().startsWith("KEY") &&
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!key.toUpperCase().startsWith("X-")
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) {
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// value = value.replaceAll(";","\t");
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if ((value.length() > 0)) parsedData.put(key, value);
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}
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} else {
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if (theLogger.isFinest()) this.theLogger.logFinest("Invalid data in vcf file" +
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"\n\tURL: " + url +
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"\n\tLine: " + line +
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"\n\tLine-Nr: " + lineNr);
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}
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}
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final String[] sections = parsedNames.toArray(new String[parsedNames.size()]);
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final byte[] text = parsedDataText.toString().getBytes();
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final Document theDoc = new Document(
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url, // url of the source document
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mimeType, // the documents mime type
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null,
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null, // a list of extracted keywords
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null, // the language
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parsedTitle.toString(), // a long document title
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"", // TODO: AUTHOR
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sections, // an array of section headlines
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"vCard", // an abstract
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text, // the parsed document text
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anchors, // a map of extracted anchors
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null); // a treeset of image URLs
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return theDoc;
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} catch (final Exception e) {
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if (e instanceof InterruptedException) throw (InterruptedException) e;
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if (e instanceof ParserException) throw (ParserException) e;
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throw new ParserException("Unexpected error while parsing vcf resource. " + e.getMessage(),url);
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}
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}
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@Override
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public void reset() {
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// Nothing todo here at the moment
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super.reset();
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}
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public static final String decodeQuotedPrintable(final String s) {
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if (s == null) return null;
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final byte[] b = s.getBytes();
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final StringBuilder sb = new StringBuilder();
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for (int i = 0; i < b.length; i++) {
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final int c = b[i];
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if (c == '=') {
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try {
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final int u = Character.digit((char) b[++i], 16);
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final int l = Character.digit((char) b[++i], 16);
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if (u == -1 || l == -1) throw new RuntimeException("bad quoted-printable encoding");
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sb.append((char) ((u << 4) + l));
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} catch (final ArrayIndexOutOfBoundsException e) {
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throw new RuntimeException("bad quoted-printable encoding");
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}
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} else {
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sb.append((char) c);
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}
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}
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return sb.toString();
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}
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public static void main(final String[] args) {
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try {
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final yacyURL contentUrl = new yacyURL(args[0], null);
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final vcfParser testParser = new vcfParser();
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final RequestHeader reqHeader = new RequestHeader();
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reqHeader.put(HeaderFramework.USER_AGENT, HTTPLoader.crawlerUserAgent);
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final byte[] content = Client.wget(contentUrl.toString(), reqHeader, 10000);
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final ByteArrayInputStream input = new ByteArrayInputStream(content);
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testParser.parse(contentUrl, "text/x-vcard", "UTF-8",input);
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} catch (final Exception e) {
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e.printStackTrace();
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}
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}
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}
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