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 * Copyright (C) 2014-2019 Appsicle
 *
 * This program is free software: you can redistribute it and/or  modify
 * it under the terms of the GNU Affero General Public License, version 3,
 * as published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Affero General Public License for more details.
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package com.questdb.std.str;

import com.questdb.std.Chars;
import com.questdb.std.Misc;
import com.questdb.std.Unsafe;

public class DirectUnboundedByteSink extends AbstractCharSink {
    private final long address;
    private long _wptr;

    public DirectUnboundedByteSink(long address) {
        this.address = _wptr = address;
    }

    public void clear(int len) {
        _wptr = address + len;
    }

    public int length() {
        return (int) (_wptr - address);
    }

    @Override
    public CharSink put(CharSequence cs) {
        int len = cs.length();
        Chars.strcpy(cs, len, _wptr);
        _wptr += len;
        return this;
    }

    @Override
    public CharSink put(char c) {
        Unsafe.getUnsafe().putByte(_wptr++, (byte) c);
        return this;
    }

    @Override
    public String toString() {
        CharSink b = Misc.getThreadLocalBuilder();
        for (long p = address, hi = _wptr; p < hi; p++) {
            b.put((char) Unsafe.getUnsafe().getByte(p));
        }
        return b.toString();
    }
}