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/****************************************************************************
* Copyright (C) 2009-2015 EPAM Systems
*
* This file is part of Indigo toolkit.
*
* This file may be distributed and/or modified under the terms of the
* GNU General Public License version 3 as published by the Free Software
* Foundation and appearing in the file LICENSE.GPL included in the
* packaging of this file.
*
* This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
* WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
***************************************************************************/
#include "base_cpp/chunk_storage.h"
using namespace indigo;
IMPL_ERROR(ChunkStorage, "chunk storage");
ChunkStorage::ChunkStorage ()
{
_offset.push(0);
}
void ChunkStorage::clear ()
{
_arr.clear();
_offset.clear();
_offset.push(0);
}
byte* ChunkStorage::add (int n_bytes)
{
int prev_size = _offset.top();
_arr.resize(prev_size + n_bytes);
_offset.push(prev_size + n_bytes);
return _arr.ptr() + prev_size;
}
void ChunkStorage::add (const byte *data, int n_bytes)
{
byte *ptr = add(n_bytes);
memcpy(ptr, data, n_bytes);
}
void ChunkStorage::add (const Array<char> &data)
{
add((const byte *)data.ptr(), data.size());
}
void ChunkStorage::add (const char *str)
{
add((const byte *)str, strlen(str) + 1);
}
byte* ChunkStorage::get (int i)
{
return _arr.ptr() + _offset[i];
}
int ChunkStorage::getSize (int i)
{
return _offset[i + 1] - _offset[i];
}
int ChunkStorage::count (void)
{
return _offset.size() - 1;
}
void ChunkStorage::pop ()
{
if (count() == 0)
throw Error("Cannot pop element from empty chunk storage");
_offset.pop();
_arr.resize(_offset[_offset.size() - 1]);
}
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