growthcraft.api.core.stream.StreamUtils.java Source code

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Here is the source code for growthcraft.api.core.stream.StreamUtils.java

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/*
 * The MIT License (MIT)
 *
 * Copyright (c) 2015, 2016 IceDragon200
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */
package growthcraft.api.core.stream;

import java.io.UnsupportedEncodingException;

import io.netty.buffer.ByteBuf;

import net.minecraftforge.fluids.Fluid;
import net.minecraftforge.fluids.FluidRegistry;
import net.minecraftforge.fluids.FluidStack;
import net.minecraftforge.fluids.FluidTank;

/**
 * Utility class for handling data streams
 */
public class StreamUtils {
    private StreamUtils() {
    }

    /**
     * Reads an ASCII string from the stream, the first int should be the length
     * of the string.
     *
     * @param stream - stream to read from
     * @return string
     */
    public static String readStringASCII(ByteBuf stream) throws UnsupportedEncodingException {
        final int len = stream.readInt();
        final byte[] bytes = stream.readBytes(len).array();
        return new String(bytes, "US-ASCII");
    }

    /**
     * Writes an ASCII string to the stream, the first value will be an integer for the length of the
     * string, followed by bytes
     *
     * @param stream - stream to write to
     * @param str - string to write
     */
    public static void writeStringASCII(ByteBuf stream, String str) throws UnsupportedEncodingException {
        final byte[] bytes = str.getBytes("US-ASCII");
        stream.writeInt(str.length());
        stream.writeBytes(bytes);
    }

    public static void readFluidTank(ByteBuf stream, FluidTank tank) {
        final int capacity = stream.readInt();
        final int fluidId = stream.readInt();
        final int fluidAmount = stream.readInt();

        final Fluid fluid = fluidId > -1 ? FluidRegistry.getFluid(fluidId) : null;
        final FluidStack fluidStack = fluid != null ? new FluidStack(fluid, fluidAmount) : null;

        tank.setCapacity(capacity);
        tank.setFluid(fluidStack);
    }

    public static void writeFluidTank(ByteBuf stream, FluidTank tank) {
        int fluidId = -1;
        int fluidAmount = 0;
        final int capacity = tank.getCapacity();
        final FluidStack fs = tank.getFluid();

        if (fs != null) {
            fluidId = fs.getFluidID();
            fluidAmount = fs.amount;
        }

        stream.writeInt(capacity);
        stream.writeInt(fluidId);
        stream.writeInt(fluidAmount);
    }
}