/*-*-c++-*-
 * $Id$
 *
 * This file is part of plptools.
 *
 *  Copyright (C) 1999  Philip Proudman <philip.proudman@btinternet.com>
 *  Copyright (C) 2000, 2001 Fritz Elfert <felfert@to.com>
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  (at your option) any later version.
 *
 *  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 General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 */
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif

#include "bufferstore.h"
#include "bufferarray.h"

bufferArray::bufferArray()
{
    len = 0;
    lenAllocd = ALLOC_MIN;
    buff = new bufferStore[lenAllocd];
}

bufferArray::bufferArray(const bufferArray & a)
{
    len = a.len;
    lenAllocd = a.lenAllocd;
    buff = new bufferStore[lenAllocd];
    for (int i = 0; i < len; i++)
	buff[i] = a.buff[i];
}

bufferArray::~bufferArray()
{
    delete []buff;
}

bufferStore bufferArray::
pop()
{
    bufferStore ret;
    if (len > 0) {
	ret = buff[0];
	len--;
	for (long i = 0; i < len; i++) {
	    buff[i] = buff[i + 1];
	}
    }
    return ret;
}

void bufferArray::
append(const bufferStore & b)
{
    if (len == lenAllocd) {
	lenAllocd += ALLOC_MIN;
	bufferStore *nb = new bufferStore[lenAllocd];
	for (long i = 0; i < len; i++) {
	    nb[i] = buff[i];
	}
	delete []buff;
	buff = nb;
    }
    buff[len++] = b;
}

void bufferArray::
push(const bufferStore & b)
{
    if (len == lenAllocd)
	lenAllocd += ALLOC_MIN;
    bufferStore *nb = new bufferStore[lenAllocd];
    for (long i = len; i > 0; i--) {
	nb[i] = buff[i - 1];
    }
    nb[0] = b;
    delete[]buff;
    buff = nb;
    len++;
}

long bufferArray::
length(void)
{
    return len;
}

void bufferArray::
clear(void)
{
    len = 0;
    lenAllocd = ALLOC_MIN;
    delete []buff;
    buff = new bufferStore[lenAllocd];
}

bufferArray &bufferArray::
operator =(const bufferArray & a)
{
    delete []buff;
    len = a.len;
    lenAllocd = a.lenAllocd;
    buff = new bufferStore[lenAllocd];
    for (int i = 0; i < len; i++)
	buff[i] = a.buff[i];
    return *this;
}

bufferStore &bufferArray::
operator [](const unsigned long index)
{
    return buff[index];
}

bufferArray bufferArray::
operator +(const bufferStore &s)
{
    bufferArray res = *this;
    res += s;
    return res;
}

bufferArray bufferArray::
operator +(const bufferArray &a)
{
    bufferArray res = *this;
    res += a;
    return res;
}

bufferArray &bufferArray::
operator +=(const bufferArray &a)
{
    lenAllocd += a.lenAllocd;
    bufferStore *nb = new bufferStore[lenAllocd];
    for (int i = 0; i < len; i++)
	nb[len + i] = buff[i];
    for (int i = 0; i < a.len; i++)
	nb[len + i] = a.buff[i];
    len += a.len;
    delete []buff;
    buff = nb;
    return *this;
}

bufferArray &bufferArray::
operator +=(const bufferStore &s)
{
    append(s);
    return *this;
}

/*
 * Local variables:
 * c-basic-offset: 4
 * End:
 */