io.edurt.datacap.pinot.org.jboss.netty.buffer.ChannelBufferIndexFinder Maven / Gradle / Ivy
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/*
* Copyright 2012 The Netty Project
*
* The Netty Project licenses this file to you under the Apache License,
* version 2.0 (the "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*/
package io.edurt.datacap.pinot.org.jboss.netty.buffer;
/**
* Locates an index of data in a {@link ChannelBuffer}.
*
* This interface enables the sequential search for the data which meets more
* complex and dynamic condition than just a simple value matching. Please
* refer to {@link ChannelBuffer#indexOf(int, int, ChannelBufferIndexFinder)} and
* {@link ChannelBuffer#bytesBefore(int, int, ChannelBufferIndexFinder)}
* for more explanation.
*
* @apiviz.uses org.jboss.netty.buffer.ChannelBuffer
*/
public interface ChannelBufferIndexFinder {
/**
* Returns {@code true} if and only if the data is found at the specified
* {@code guessedIndex} of the specified {@code buffer}.
*
* The implementation should not perform an operation which raises an
* exception such as {@link IndexOutOfBoundsException} nor perform
* an operation which modifies the content of the buffer.
*/
boolean find(ChannelBuffer buffer, int guessedIndex);
/**
* Index finder which locates a {@code NUL (0x00)} byte.
*/
ChannelBufferIndexFinder NUL = new ChannelBufferIndexFinder() {
public boolean find(ChannelBuffer buffer, int guessedIndex) {
return buffer.getByte(guessedIndex) == 0;
}
};
/**
* Index finder which locates a non-{@code NUL (0x00)} byte.
*/
ChannelBufferIndexFinder NOT_NUL = new ChannelBufferIndexFinder() {
public boolean find(ChannelBuffer buffer, int guessedIndex) {
return buffer.getByte(guessedIndex) != 0;
}
};
/**
* Index finder which locates a {@code CR ('\r')} byte.
*/
ChannelBufferIndexFinder CR = new ChannelBufferIndexFinder() {
public boolean find(ChannelBuffer buffer, int guessedIndex) {
return buffer.getByte(guessedIndex) == '\r';
}
};
/**
* Index finder which locates a non-{@code CR ('\r')} byte.
*/
ChannelBufferIndexFinder NOT_CR = new ChannelBufferIndexFinder() {
public boolean find(ChannelBuffer buffer, int guessedIndex) {
return buffer.getByte(guessedIndex) != '\r';
}
};
/**
* Index finder which locates a {@code LF ('\n')} byte.
*/
ChannelBufferIndexFinder LF = new ChannelBufferIndexFinder() {
public boolean find(ChannelBuffer buffer, int guessedIndex) {
return buffer.getByte(guessedIndex) == '\n';
}
};
/**
* Index finder which locates a non-{@code LF ('\n')} byte.
*/
ChannelBufferIndexFinder NOT_LF = new ChannelBufferIndexFinder() {
public boolean find(ChannelBuffer buffer, int guessedIndex) {
return buffer.getByte(guessedIndex) != '\n';
}
};
/**
* Index finder which locates a {@code CR ('\r')} or {@code LF ('\n')}.
*/
ChannelBufferIndexFinder CRLF = new ChannelBufferIndexFinder() {
public boolean find(ChannelBuffer buffer, int guessedIndex) {
byte b = buffer.getByte(guessedIndex);
return b == '\r' || b == '\n';
}
};
/**
* Index finder which locates a byte which is neither a {@code CR ('\r')}
* nor a {@code LF ('\n')}.
*/
ChannelBufferIndexFinder NOT_CRLF = new ChannelBufferIndexFinder() {
public boolean find(ChannelBuffer buffer, int guessedIndex) {
byte b = buffer.getByte(guessedIndex);
return b != '\r' && b != '\n';
}
};
/**
* Index finder which locates a linear whitespace
* ({@code ' '} and {@code '\t'}).
*/
ChannelBufferIndexFinder LINEAR_WHITESPACE = new ChannelBufferIndexFinder() {
public boolean find(ChannelBuffer buffer, int guessedIndex) {
byte b = buffer.getByte(guessedIndex);
return b == ' ' || b == '\t';
}
};
/**
* Index finder which locates a byte which is not a linear whitespace
* (neither {@code ' '} nor {@code '\t'}).
*/
ChannelBufferIndexFinder NOT_LINEAR_WHITESPACE = new ChannelBufferIndexFinder() {
public boolean find(ChannelBuffer buffer, int guessedIndex) {
byte b = buffer.getByte(guessedIndex);
return b != ' ' && b != '\t';
}
};
}