io.netty.handler.codec.smtp.SmtpCommand Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of wildfly-client-all

This artifact provides a single jar that contains all classes required to use remote Jakarta Enterprise Beans and Jakarta Messaging, including all dependencies. It is intended for use by those not using maven, maven users should just import the Jakarta Enterprise Beans and Jakarta Messaging 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).

There is a newer version: 35.0.0.Beta1

Show newest version

/*
 * Copyright 2016 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.handler.codec.smtp;

import io.netty.buffer.ByteBuf;
import io.netty.buffer.ByteBufUtil;
import io.netty.util.AsciiString;
import io.netty.util.internal.ObjectUtil;
import io.netty.util.internal.UnstableApi;

import java.util.HashMap;
import java.util.Map;

/**
 * The command part of a {@link SmtpRequest}.
 */
@UnstableApi
public final class SmtpCommand {
    public static final SmtpCommand EHLO = new SmtpCommand(AsciiString.cached("EHLO"));
    public static final SmtpCommand HELO = new SmtpCommand(AsciiString.cached("HELO"));
    public static final SmtpCommand MAIL = new SmtpCommand(AsciiString.cached("MAIL"));
    public static final SmtpCommand RCPT = new SmtpCommand(AsciiString.cached("RCPT"));
    public static final SmtpCommand DATA = new SmtpCommand(AsciiString.cached("DATA"));
    public static final SmtpCommand NOOP = new SmtpCommand(AsciiString.cached("NOOP"));
    public static final SmtpCommand RSET = new SmtpCommand(AsciiString.cached("RSET"));
    public static final SmtpCommand EXPN = new SmtpCommand(AsciiString.cached("EXPN"));
    public static final SmtpCommand VRFY = new SmtpCommand(AsciiString.cached("VRFY"));
    public static final SmtpCommand HELP = new SmtpCommand(AsciiString.cached("HELP"));
    public static final SmtpCommand QUIT = new SmtpCommand(AsciiString.cached("QUIT"));

    private static final Map COMMANDS = new HashMap();
    static {
        COMMANDS.put(EHLO.name().toString(), EHLO);
        COMMANDS.put(HELO.name().toString(), HELO);
        COMMANDS.put(MAIL.name().toString(), MAIL);
        COMMANDS.put(RCPT.name().toString(), RCPT);
        COMMANDS.put(DATA.name().toString(), DATA);
        COMMANDS.put(NOOP.name().toString(), NOOP);
        COMMANDS.put(RSET.name().toString(), RSET);
        COMMANDS.put(EXPN.name().toString(), EXPN);
        COMMANDS.put(VRFY.name().toString(), VRFY);
        COMMANDS.put(HELP.name().toString(), HELP);
        COMMANDS.put(QUIT.name().toString(), QUIT);
    }

    /**
     * Returns the {@link SmtpCommand} for the given command name.
     */
    public static SmtpCommand valueOf(CharSequence commandName) {
        ObjectUtil.checkNotNull(commandName, "commandName");
        SmtpCommand command = COMMANDS.get(commandName.toString());
        return command != null ? command : new SmtpCommand(AsciiString.of(commandName));
    }

    private final AsciiString name;

    private SmtpCommand(AsciiString name) {
        this.name = name;
    }

    /**
     * Return the command name.
     */
    public AsciiString name() {
        return name;
    }

    void encode(ByteBuf buffer) {
        ByteBufUtil.writeAscii(buffer, name);
    }

    boolean isContentExpected() {
        return this.equals(DATA);
    }

    @Override
    public int hashCode() {
        return name.hashCode();
    }

    @Override
    public boolean equals(Object obj) {
        if (obj == this) {
            return true;
        }
        if (!(obj instanceof SmtpCommand)) {
            return false;
        }
        return name.contentEqualsIgnoreCase(((SmtpCommand) obj).name());
    }

    @Override
    public String toString() {
        return "SmtpCommand{name=" + name + '}';
    }
}