package net.minecraft.nbt;

import java.io.DataInput;
import java.io.DataOutput;
import java.io.IOException;

public class NBTTagString extends NBTBase
{
    /** The string value for the tag (cannot be empty). */
    private String data;

    public NBTTagString()
    {
        this.data = "";
    }

    public NBTTagString(String data)
    {
        this.data = data;

        if (data == null)
        {
            throw new IllegalArgumentException("Empty string not allowed");
        }
    }

    /**
     * Write the actual data contents of the tag, implemented in NBT extension classes
     */
    void write(DataOutput output) throws IOException
    {
        output.writeUTF(this.data);
    }

    void read(DataInput input, int depth, NBTSizeTracker sizeTracker) throws IOException
    {
        sizeTracker.read(288L);
        this.data = input.readUTF();
        sizeTracker.read((long)(16 * this.data.length()));
    }

    /**
     * Gets the type byte for the tag.
     */
    public byte getId()
    {
        return (byte)8;
    }

    public String toString()
    {
        return "\"" + this.data.replace("\"", "\\\"") + "\"";
    }

    /**
     * Creates a clone of the tag.
     */
    public NBTBase copy()
    {
        return new NBTTagString(this.data);
    }

    /**
     * Return whether this compound has no tags.
     */
    public boolean hasNoTags()
    {
        return this.data.isEmpty();
    }

    public boolean equals(Object p_equals_1_)
    {
        if (!super.equals(p_equals_1_))
        {
            return false;
        }
        else
        {
            NBTTagString nbttagstring = (NBTTagString)p_equals_1_;
            return this.data == null && nbttagstring.data == null || this.data != null && this.data.equals(nbttagstring.data);
        }
    }

    public int hashCode()
    {
        return super.hashCode() ^ this.data.hashCode();
    }

    public String getString()
    {
        return this.data;
    }
}
