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337 lines
12 KiB
337 lines
12 KiB
// wikiBoard.java
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// -------------------------------------
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// (C) by Michael Peter Christen; mc@anomic.de
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// first published on http://www.anomic.de
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// Frankfurt, Germany, 2004
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// last major change: 20.07.2004
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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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//
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// Using this software in any meaning (reading, learning, copying, compiling,
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// running) means that you agree that the Author(s) is (are) not responsible
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// for cost, loss of data or any harm that may be caused directly or indirectly
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// by usage of this softare or this documentation. The usage of this software
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// is on your own risk. The installation and usage (starting/running) of this
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// software may allow other people or application to access your computer and
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// any attached devices and is highly dependent on the configuration of the
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// software which must be done by the user of the software; the author(s) is
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// (are) also not responsible for proper configuration and usage of the
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// software, even if provoked by documentation provided together with
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// the software.
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//
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// Any changes to this file according to the GPL as documented in the file
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// gpl.txt aside this file in the shipment you received can be done to the
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// lines that follows this copyright notice here, but changes must not be
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// done inside the copyright notive above. A re-distribution must contain
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// the intact and unchanged copyright notice.
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// Contributions and changes to the program code must be marked as such.
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package de.anomic.data;
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import java.io.File;
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import java.io.IOException;
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import java.text.ParseException;
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import java.text.SimpleDateFormat;
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import java.util.Date;
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import java.util.GregorianCalendar;
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import java.util.HashMap;
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import java.util.Iterator;
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import java.util.Map;
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import java.util.TimeZone;
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import de.anomic.kelondro.kelondroBase64Order;
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import de.anomic.kelondro.kelondroDyn;
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import de.anomic.kelondro.kelondroMap;
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import de.anomic.kelondro.kelondroRecords;
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public class wikiBoard {
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public static final int keyLength = 64;
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private static final String dateFormat = "yyyyMMddHHmmss";
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private static final int recordSize = 512;
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private static TimeZone GMTTimeZone = TimeZone.getTimeZone("PST");
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private static SimpleDateFormat SimpleFormatter = new SimpleDateFormat(dateFormat);
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private kelondroMap datbase = null;
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private kelondroMap bkpbase = null;
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private static HashMap authors = new HashMap();
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public wikiBoard(File actpath, File bkppath, int bufferkb) {
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new File(actpath.getParent()).mkdir();
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if (datbase == null) {
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if (actpath.exists()) try {
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datbase = new kelondroMap(new kelondroDyn(actpath, bufferkb / 2 * 0x40, '_'));
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} catch (IOException e) {
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datbase = new kelondroMap(new kelondroDyn(actpath, bufferkb / 2 * 0x400, keyLength, recordSize, '_', true));
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} else {
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datbase = new kelondroMap(new kelondroDyn(actpath, bufferkb / 2 * 0x400, keyLength, recordSize, '_', true));
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}
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}
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new File(bkppath.getParent()).mkdir();
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if (bkpbase == null) {
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if (bkppath.exists()) try {
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bkpbase = new kelondroMap(new kelondroDyn(bkppath, bufferkb / 2 * 0x400, '_'));
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} catch (IOException e) {
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bkpbase = new kelondroMap(new kelondroDyn(bkppath, bufferkb / 2 * 0x400, keyLength + dateFormat.length(), recordSize, '_', true));
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} else {
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bkpbase = new kelondroMap(new kelondroDyn(bkppath, bufferkb / 2 * 0x400, keyLength + dateFormat.length(), recordSize, '_', true));
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}
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}
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}
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public int sizeOfTwo() {
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return datbase.size() + bkpbase.size();
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}
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public int size() {
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return datbase.size();
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}
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public int[] dbCacheChunkSize() {
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int[] db = datbase.cacheChunkSize();
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int[] bk = bkpbase.cacheChunkSize();
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int[] i = new int[3];
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i[kelondroRecords.CP_LOW] = (db[kelondroRecords.CP_LOW] + bk[kelondroRecords.CP_LOW]) / 2;
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i[kelondroRecords.CP_MEDIUM] = (db[kelondroRecords.CP_MEDIUM] + bk[kelondroRecords.CP_MEDIUM]) / 2;
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i[kelondroRecords.CP_HIGH] = (db[kelondroRecords.CP_HIGH] + bk[kelondroRecords.CP_HIGH]) / 2;
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return i;
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}
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public int[] dbCacheFillStatus() {
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int[] a = datbase.cacheFillStatus();
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int[] b = bkpbase.cacheFillStatus();
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return new int[]{a[0] + b[0], a[1] + b[1], a[2] + b[2], a[3] + b[3]};
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}
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public void close() {
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try {datbase.close();} catch (IOException e) {}
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try {bkpbase.close();} catch (IOException e) {}
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}
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private static String dateString() {
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return dateString(new GregorianCalendar(GMTTimeZone).getTime());
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}
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private static String dateString(Date date) {
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return SimpleFormatter.format(date);
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}
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private static String normalize(String key) {
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if (key == null) return "null";
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return key.trim().toLowerCase();
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}
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public static String webalize(String key) {
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if (key == null) return "null";
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key = key.trim().toLowerCase();
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int p;
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while ((p = key.indexOf(" ")) >= 0)
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key = key.substring(0, p) + "%20" + key.substring(p +1);
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return key;
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}
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public static String guessAuthor(String ip) {
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String author = (String) authors.get(ip);
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//yacyCore.log.logDebug("DEBUG: guessing author for ip = " + ip + " is '" + author + "', authors = " + authors.toString());
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return author;
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}
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public static void setAuthor(String ip, String author) {
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authors.put(ip,author);
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}
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public entry newEntry(String subject, String author, String ip, String reason, byte[] page) throws IOException {
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return new entry(normalize(subject), author, ip, reason, page);
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}
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public class entry {
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String key;
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Map record;
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public entry(String subject, String author, String ip, String reason, byte[] page) throws IOException {
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record = new HashMap();
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key = subject;
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if (key.length() > keyLength) key = key.substring(0, keyLength);
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record.put("date", dateString());
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if ((author == null) || (author.length() == 0)) author = "anonymous";
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record.put("author", kelondroBase64Order.enhancedCoder.encode(author.getBytes("UTF-8")));
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if ((ip == null) || (ip.length() == 0)) ip = "";
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record.put("ip", ip);
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if ((reason == null) || (reason.length() == 0)) reason = "";
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record.put("reason", kelondroBase64Order.enhancedCoder.encode(reason.getBytes("UTF-8")));
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if (page == null)
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record.put("page", "");
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else
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record.put("page", kelondroBase64Order.enhancedCoder.encode(page));
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authors.put(ip, author);
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//System.out.println("DEBUG: setting author " + author + " for ip = " + ip + ", authors = " + authors.toString());
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}
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private entry(String key, Map record) {
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this.key = key;
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this.record = record;
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}
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public String subject() {
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return key;
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}
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public Date date() {
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try {
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String c = (String) record.get("date");
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return SimpleFormatter.parse(c);
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} catch (ParseException e) {
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return new Date();
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}
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}
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public String author() {
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String a = (String) record.get("author");
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if (a == null) return "anonymous";
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byte[] b = kelondroBase64Order.enhancedCoder.decode(a);
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if (b == null) return "anonymous";
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return new String(b);
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}
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public String reason() {
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String r = (String) record.get("reason");
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if (r == null) return "";
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byte[] b = kelondroBase64Order.enhancedCoder.decode(r);
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if (b == null) return "unknown";
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return new String(b);
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}
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public byte[] page() {
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String m = (String) record.get("page");
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if (m == null) return new byte[0];
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byte[] b = kelondroBase64Order.enhancedCoder.decode(m);
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if (b == null) return "".getBytes();
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return b;
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}
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private void setAncestorDate(Date date) {
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record.put("bkp", dateString(date));
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}
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private Date getAncestorDate() {
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try {
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String c = (String) record.get("date");
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if (c == null) return null;
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return SimpleFormatter.parse(c);
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} catch (ParseException e) {
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return null;
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}
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}
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/*
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public boolean hasAncestor() {
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Date ancDate = getAncestorDate();
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if (ancDate == null) return false;
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try {
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return bkpbase.has(key + dateString(ancDate));
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} catch (IOException e) {
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return false;
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}
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}
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*/
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public entry getAncestor() {
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Date ancDate = getAncestorDate();
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if (ancDate == null) return null;
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return read(key + dateString(ancDate), bkpbase);
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}
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private void setChild(String subject) {
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record.put("child", kelondroBase64Order.enhancedCoder.encode(subject.getBytes()));
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}
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private String getChildName() {
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String c = (String) record.get("child");
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if (c == null) return null;
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byte[] subject = kelondroBase64Order.enhancedCoder.decode(c);
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if (subject == null) return null;
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return new String(subject);
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}
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public boolean hasChild() {
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String c = (String) record.get("child");
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if (c == null) return false;
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byte[] subject = kelondroBase64Order.enhancedCoder.decode(c);
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return (subject != null);
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}
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public entry getChild() {
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String childName = getChildName();
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if (childName == null) return null;
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return read(childName, datbase);
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}
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}
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public String write(entry page) {
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// writes a new page and returns key
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try {
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// first load the old page
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entry oldEntry = read(page.key);
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// set the bkp date of the new page to the date of the old page
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Date oldDate = oldEntry.date();
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page.setAncestorDate(oldDate);
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oldEntry.setChild(page.subject());
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// write the backup
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//System.out.println("key = " + page.key);
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//System.out.println("oldDate = " + oldDate);
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//System.out.println("record = " + oldEntry.record.toString());
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bkpbase.set(page.key + dateString(oldDate), oldEntry.record);
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// write the new page
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datbase.set(page.key, page.record);
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return page.key;
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} catch (IOException e) {
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return null;
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}
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}
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public entry read(String key) {
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return read(key, datbase);
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}
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private entry read(String key, kelondroMap base) {
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try {
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key = normalize(key);
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if (key.length() > keyLength) key = key.substring(0, keyLength);
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Map record = base.get(key);
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if (record == null) return newEntry(key, "anonymous", "127.0.0.1", "New Page", "".getBytes());
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return new entry(key, record);
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} catch (IOException e) {
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return null;
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}
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}
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/*
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public boolean has(String key) {
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try {
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return datbase.has(normalize(key));
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} catch (IOException e) {
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return false;
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}
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}
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*/
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public Iterator keys(boolean up) throws IOException {
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return datbase.keys(up, false);
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}
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}
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