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/*
 * JBoss, Home of Professional Open Source.
 * Copyright 2014 Red Hat, Inc., and individual contributors
 * as indicated by the @author tags.
 *
 * Licensed 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.undertow.protocols.ajp;

import java.nio.ByteBuffer;

import io.undertow.util.HttpString;

/**
 * @author Stuart Douglas
 */
class AjpUtils {


    static boolean notNull(Boolean attachment) {
        return attachment == null ? false : attachment;
    }

    static int notNull(Integer attachment) {
        return attachment == null ? 0 : attachment;
    }

    static String notNull(String attachment) {
        return attachment == null ? "" : attachment;
    }

    static void putInt(final ByteBuffer buf, int value) {
        buf.put((byte) ((value >> 8) & 0xFF));
        buf.put((byte) (value & 0xFF));
    }

    static void putString(final ByteBuffer buf, String value) {
        final int length = value.length();
        putInt(buf, length);
        for (int i = 0; i < length; ++i) {
            buf.put((byte) value.charAt(i));
        }
        buf.put((byte) 0);
    }

    static void putHttpString(final ByteBuffer buf, HttpString value) {
        final int length = value.length();
        putInt(buf, length);
        value.appendTo(buf);
        buf.put((byte) 0);
    }

}