io.netty.buffer.ByteBufProcessor Maven / Gradle / Ivy

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This artifact provides a single jar that contains all classes required to use remote EJB and JMS, including all dependencies. It is intended for use by those not using maven, maven users should just import the EJB and JMS BOM's instead (shaded JAR's cause lots of problems with maven, as it is very easy to inadvertently end up with different versions on classes on the class path).

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/*
 * Copyright 2013 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.netty.buffer;

public interface ByteBufProcessor {

    /**
     * Aborts on a {@code NUL (0x00)}.
     */
    ByteBufProcessor FIND_NUL = new ByteBufProcessor() {
        @Override
        public boolean process(byte value) throws Exception {
            return value != 0;
        }
    };

    /**
     * Aborts on a non-{@code NUL (0x00)}.
     */
    ByteBufProcessor FIND_NON_NUL = new ByteBufProcessor() {
        @Override
        public boolean process(byte value) throws Exception {
            return value == 0;
        }
    };

    /**
     * Aborts on a {@code CR ('\r')}.
     */
    ByteBufProcessor FIND_CR = new ByteBufProcessor() {
        @Override
        public boolean process(byte value) throws Exception {
            return value != '\r';
        }
    };

    /**
     * Aborts on a non-{@code CR ('\r')}.
     */
    ByteBufProcessor FIND_NON_CR = new ByteBufProcessor() {
        @Override
        public boolean process(byte value) throws Exception {
            return value == '\r';
        }
    };

    /**
     * Aborts on a {@code LF ('\n')}.
     */
    ByteBufProcessor FIND_LF = new ByteBufProcessor() {
        @Override
        public boolean process(byte value) throws Exception {
            return value != '\n';
        }
    };

    /**
     * Aborts on a non-{@code LF ('\n')}.
     */
    ByteBufProcessor FIND_NON_LF = new ByteBufProcessor() {
        @Override
        public boolean process(byte value) throws Exception {
            return value == '\n';
        }
    };

    /**
     * Aborts on a {@code CR ('\r')} or a {@code LF ('\n')}.
     */
    ByteBufProcessor FIND_CRLF = new ByteBufProcessor() {
        @Override
        public boolean process(byte value) throws Exception {
            return value != '\r' && value != '\n';
        }
    };

    /**
     * Aborts on a byte which is neither a {@code CR ('\r')} nor a {@code LF ('\n')}.
     */
    ByteBufProcessor FIND_NON_CRLF = new ByteBufProcessor() {
        @Override
        public boolean process(byte value) throws Exception {
            return value == '\r' || value == '\n';
        }
    };

    /**
     * Aborts on a linear whitespace (a ({@code ' '} or a {@code '\t'}).
     */
    ByteBufProcessor FIND_LINEAR_WHITESPACE = new ByteBufProcessor() {
        @Override
        public boolean process(byte value) throws Exception {
            return value != ' ' && value != '\t';
        }
    };

    /**
     * Aborts on a byte which is not a linear whitespace (neither {@code ' '} nor {@code '\t'}).
     */
    ByteBufProcessor FIND_NON_LINEAR_WHITESPACE = new ByteBufProcessor() {
        @Override
        public boolean process(byte value) throws Exception {
            return value == ' ' || value == '\t';
        }
    };

    /**
     * @return {@code true} if the processor wants to continue the loop and handle the next byte in the buffer.
     *         {@code false} if the processor wants to stop handling bytes and abort the loop.
     */
    boolean process(byte value) throws Exception;
}