001 /*
002 * Copyright (C) 2008 Trustin Heuiseung Lee
003 *
004 * This library is free software; you can redistribute it and/or
005 * modify it under the terms of the GNU Lesser General Public
006 * License as published by the Free Software Foundation; either
007 * version 2.1 of the License, or (at your option) any later version.
008 *
009 * This library is distributed in the hope that it will be useful,
010 * but WITHOUT ANY WARRANTY; without even the implied warranty of
011 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
012 * Lesser General Public License for more details.
013 *
014 * You should have received a copy of the GNU Lesser General Public
015 * License along with this library; if not, write to the Free Software
016 * Foundation, Inc., 51 Franklin Street, 5th Floor, Boston, MA 02110-1301 USA
017 */
018 package net.gleamynode.netty.buffer;
019
020
021 /**
022 * @author The Netty Project (netty@googlegroups.com)
023 * @author Trustin Lee (trustin@gmail.com)
024 *
025 * @version $Rev$, $Date$
026 *
027 * @apiviz.uses net.gleamynode.netty.buffer.ChannelBuffer
028 */
029 public interface ChannelBufferIndexFinder {
030
031 boolean find(ChannelBuffer buffer, int guessedIndex);
032
033 static ChannelBufferIndexFinder NUL = new ChannelBufferIndexFinder() {
034 public boolean find(ChannelBuffer buffer, int guessedIndex) {
035 return buffer.getByte(guessedIndex) == 0;
036 }
037 };
038
039 static ChannelBufferIndexFinder NOT_NUL = new ChannelBufferIndexFinder() {
040 public boolean find(ChannelBuffer buffer, int guessedIndex) {
041 return buffer.getByte(guessedIndex) != 0;
042 }
043 };
044
045 static ChannelBufferIndexFinder CR = new ChannelBufferIndexFinder() {
046 public boolean find(ChannelBuffer buffer, int guessedIndex) {
047 return buffer.getByte(guessedIndex) == '\r';
048 }
049 };
050
051 static ChannelBufferIndexFinder NOT_CR = new ChannelBufferIndexFinder() {
052 public boolean find(ChannelBuffer buffer, int guessedIndex) {
053 return buffer.getByte(guessedIndex) != '\r';
054 }
055 };
056
057 static ChannelBufferIndexFinder LF = new ChannelBufferIndexFinder() {
058 public boolean find(ChannelBuffer buffer, int guessedIndex) {
059 return buffer.getByte(guessedIndex) == '\n';
060 }
061 };
062
063 static ChannelBufferIndexFinder NOT_LF = new ChannelBufferIndexFinder() {
064 public boolean find(ChannelBuffer buffer, int guessedIndex) {
065 return buffer.getByte(guessedIndex) != '\n';
066 }
067 };
068
069 static ChannelBufferIndexFinder CRLF = new ChannelBufferIndexFinder() {
070 public boolean find(ChannelBuffer buffer, int guessedIndex) {
071 byte b = buffer.getByte(guessedIndex);
072 return b == '\r' || b == '\n';
073 }
074 };
075
076 static ChannelBufferIndexFinder NOT_CRLF = new ChannelBufferIndexFinder() {
077 public boolean find(ChannelBuffer buffer, int guessedIndex) {
078 byte b = buffer.getByte(guessedIndex);
079 return b != '\r' && b != '\n';
080 }
081 };
082
083 static ChannelBufferIndexFinder LINEAR_WHITESPACE = new ChannelBufferIndexFinder() {
084 public boolean find(ChannelBuffer buffer, int guessedIndex) {
085 byte b = buffer.getByte(guessedIndex);
086 return b == ' ' || b == '\t';
087 }
088 };
089
090 static ChannelBufferIndexFinder NOT_LINEAR_WHITESPACE = new ChannelBufferIndexFinder() {
091 public boolean find(ChannelBuffer buffer, int guessedIndex) {
092 byte b = buffer.getByte(guessedIndex);
093 return b != ' ' && b != '\t';
094 }
095 };
096 }