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115 lines
4.0 KiB
115 lines
4.0 KiB
14 years ago
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// YMarkUtil.java
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// (C) 2011 by Stefan Förster, sof@gmx.de, Norderstedt, Germany
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// first published 2010 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: 2011-03-09 13:50:39 +0100 (Mi, 09 Mrz 2011) $
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// $LastChangedRevision: 7574 $
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// $LastChangedBy: apfelmaennchen $
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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 de.anomic.data.ymark;
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import java.net.MalformedURLException;
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import java.util.HashSet;
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import java.util.Iterator;
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import net.yacy.kelondro.data.meta.DigestURI;
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import net.yacy.kelondro.data.word.Word;
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public class YMarkUtil {
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public final static String TAGS_SEPARATOR = ",";
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public final static String FOLDERS_SEPARATOR = "/";
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public final static byte[] getBookmarkId(String url) throws MalformedURLException {
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return (new DigestURI(url, null)).hash();
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}
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public final static byte[] getKeyId(final String tag) {
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return Word.word2hash(tag.toLowerCase());
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}
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public final static byte[] keySetToBytes(final HashSet<String> urlSet) {
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return keySetToString(urlSet).getBytes();
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}
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public final static String keySetToString(final HashSet<String> urlSet) {
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final Iterator<String> urlIter = urlSet.iterator();
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final
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StringBuilder urls = new StringBuilder(urlSet.size()*20);
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while(urlIter.hasNext()) {
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urls.append(TAGS_SEPARATOR);
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urls.append(urlIter.next());
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}
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urls.deleteCharAt(0);
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return urls.toString();
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}
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public final static HashSet<String> keysStringToSet(final String keysString) {
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HashSet<String> keySet = new HashSet<String>();
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final String[] keyArray = keysString.split(TAGS_SEPARATOR);
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for (final String key : keyArray) {
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keySet.add(key);
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}
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return keySet;
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}
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public final static String cleanTagsString(final String tagsString) {
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StringBuilder ts = new StringBuilder(tagsString);
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if(ts.length() == 0)
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return YMarkTables.BOOKMARK.TAGS.deflt();
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// get rid of double commas and space characters following a comma
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for (int i = 0; i < ts.length()-1; i++) {
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if (ts.charAt(i) == TAGS_SEPARATOR.charAt(0)) {
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if (ts.charAt(i+1) == TAGS_SEPARATOR.charAt(0) || ts.charAt(i+1) == ' ') {
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ts.deleteCharAt(i+1);
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i--;
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}
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}
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}
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// get rid of heading and trailing comma
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if (ts.charAt(0) == TAGS_SEPARATOR.charAt(0))
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ts.deleteCharAt(0);
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if (ts.charAt(ts.length()-1) == TAGS_SEPARATOR.charAt(0))
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ts.deleteCharAt(ts.length()-1);
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return ts.toString();
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}
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public final static String cleanFoldersString(final String foldersString) {
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StringBuilder fs = new StringBuilder(cleanTagsString(foldersString));
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if(fs.length() == 0)
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return YMarkTables.BOOKMARK.FOLDERS.deflt();
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for (int i = 0; i < fs.length()-1; i++) {
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if (fs.charAt(i) == FOLDERS_SEPARATOR.charAt(0)) {
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if (fs.charAt(i+1) == TAGS_SEPARATOR.charAt(0) || fs.charAt(i+1) == FOLDERS_SEPARATOR.charAt(0)) {
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fs.deleteCharAt(i);
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i--;
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} else if (fs.charAt(i+1) == ' ') {
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fs.deleteCharAt(i+1);
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i--;
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}
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}
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}
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if (fs.charAt(fs.length()-1) == FOLDERS_SEPARATOR.charAt(0)) {
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fs.deleteCharAt(fs.length()-1);
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}
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return fs.toString();
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}
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}
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