mirror of
https://github.com/yacy/yacy_search_server.git
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5fc6524ca8
later - added abstract add, delete, get methods in the triplestore - added generation of triples after auto-annotation - migrated all MultiProtocolURI objects to DigestURI in the parser since the url hash is needed as subject value in the triples in the triple store
137 lines
4.8 KiB
Java
137 lines
4.8 KiB
Java
/**
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* sidAudioParser
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* Copyright 2010 by Marc Nause, marc.nause@gmx.de, Braunschweig, Germany
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* First released 28.12.2010 at http://yacy.net
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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 library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library 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 GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with this program in the file lgpl21.txt
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* If not, see <http://www.gnu.org/licenses/>.
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*/
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package net.yacy.document.parser;
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import java.io.IOException;
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import java.io.InputStream;
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import java.nio.charset.Charset;
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import java.util.HashMap;
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import java.util.Map;
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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.kelondro.data.meta.DigestURI;
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// this is a new implementation of this parser idiom using multiple documents as result set
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/**
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* Parser for Commodore 64 SID audio files.
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* @see <a href="http://cpansearch.perl.org/src/LALA/Audio-SID-3.11/SID_file_format.txt">
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* SID file format description</a>
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* @author low012
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*/
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public class sidAudioParser extends AbstractParser implements Parser {
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public sidAudioParser() {
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super("Commodore 64 SID Audio File Parser");
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this.SUPPORTED_EXTENSIONS.add("sid");
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this.SUPPORTED_MIME_TYPES.add("audio/prs.sid");
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this.SUPPORTED_MIME_TYPES.add("audio/psid");
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this.SUPPORTED_MIME_TYPES.add("audio/x-psid");
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this.SUPPORTED_MIME_TYPES.add("audio/sidtune");
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this.SUPPORTED_MIME_TYPES.add("audio/x-sidtune");
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}
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public Document[] parse(final DigestURI location, final String mimeType,
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final String charset, final InputStream source)
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throws Parser.Failure, InterruptedException
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{
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try {
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final int available = source.available();
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final byte[] b = new byte[available];
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if (available >= 128 && source.read(b) >= 128) {
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final int version = (b[4] << 2) + b[5];
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Map<String, String> header = new HashMap<String, String>();
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switch (version) {
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case 1:
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header = parseHeader(b);
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break;
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case 2:
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header = parseHeader(b);
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break;
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default:
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throw new Parser.Failure("Unable to parse SID file, unexpected version: " + version, location);
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}
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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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null,
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null,
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header.get("name"),
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header.get("author"),
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header.get("publisher"),
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null,
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null,
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0.0f, 0.0f,
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null,
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null,
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null,
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null,
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false)};
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} else {
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throw new Parser.Failure("Unable to parse SID file, file does seems to be incomplete (len = " + available + ").", location);
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}
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} catch (IOException ex) {
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throw new Parser.Failure("Unable to read SID file header.", location, ex);
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}
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}
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/**
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*
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* @param header must contain at least the header of the SID file.
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* @return values parsed from the input data
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*/
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private Map<String, String> parseHeader(final byte[] header) {
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final byte[] name = new byte[32];
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for (int i = 0; i < 32; i++) {
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name[i] = header[i + 16];
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}
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final byte[] author = new byte[32];
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for (int i = 0; i < 32; i++) {
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author[i] = header[i + 48];
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}
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final byte[] copyright = new byte[32];
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for (int i = 0; i < 32; i++) {
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copyright[i] = header[i + 80];
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}
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Map<String, String> ret = new HashMap<String, String>();
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ret.put("name", new String(name, Charset.forName("ISO-8859-1")).trim());
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ret.put("author", new String(author, Charset.forName("ISO-8859-1")).trim());
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ret.put("publisher", new String(copyright, Charset.forName("ISO-8859-1")).trim());
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return ret;
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}
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}
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