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/****************************************************************************
* Copyright (C) from 2009 to Present EPAM Systems.
*
* This file is part of Indigo toolkit.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
***************************************************************************/
#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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