Current File : //home/waritko/yacy/source/net/yacy/cora/util/CommonPattern.java
/**
* CommonPattern
* Copyright 2012 by Michael Peter Christen; mc@yacy.net, Frankfurt a. M., Germany
* First published 26.11.2012 on http://yacy.net
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program in the file lgpl21.txt
* If not, see <http://www.gnu.org/licenses/>.
*/
package net.yacy.cora.util;
import java.util.regex.Pattern;
/**
* This class provides Pattern constants to be used
* to replace a regex in s.split(regex) method calls.
* Because s.split(regex) causes an execution of
* Pattern.compile(regex).split(s, 0), it is wise to pre-compile
* all regex to a pattern p.
* Therefore do the following: transform your code into
* Pattern p = Pattern.compile(regex); p.split(s);
* The compilation of a specific pattern should be done only once.
* Therefore this class provides Pattern objects for the most common regex Strings.
*
* The same applies to s.replaceall(regex, replacement) which is equal to
* Pattern.compile(regex).matcher(s).replaceAll(replacement);
*/
public class CommonPattern {
public final static Pattern SPACE = Pattern.compile(" ");
public final static Pattern SPACES = Pattern.compile(" +"); // pattern for one or multiple spaces
public final static Pattern COMMA = Pattern.compile(",");
public final static Pattern SEMICOLON = Pattern.compile(";");
public final static Pattern DOUBLEPOINT = Pattern.compile(":");
public final static Pattern SLASH = Pattern.compile("/");
public final static Pattern PIPE = Pattern.compile("\\|");
public final static Pattern BACKSLASH = Pattern.compile("\\\\");
public final static Pattern QUESTION = Pattern.compile("\\?");
public final static Pattern AMP = Pattern.compile("&");
public final static Pattern PLUS = Pattern.compile(Pattern.quote("+"));
public final static Pattern DOT = Pattern.compile("\\.");
public final static Pattern NEWLINE = Pattern.compile("\n");
public final static Pattern VERTICALBAR = Pattern.compile(Pattern.quote("|"));
public final static Pattern UNDERSCORE = Pattern.compile("_");
public final static Pattern TAB = Pattern.compile("\t");
}
Mini Shell