jmemoryoutputstream.cpp
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/***************************************************************************
* Copyright (C) 2005 by Jeff Ferr *
* root@sat *
* *
* 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. *
***************************************************************************/
#include "Stdafx.h"
#include "jiolib.h"
#include "jmemoryoutputstream.h"
#include "jruntimeexception.h"
namespace jio {
MemoryOutputStream::MemoryOutputStream(uint8_t*data, uint64_t size):
jio::OutputStream()
{
jcommon::Object::SetClassName("jio::MemoryOutputStream");
if ((void *)data == NULL) {
throw jcommon::RuntimeException("Null pointer exception");
}
_buffer = data;
_buffer_size = size;
_buffer_index = 0;
}
MemoryOutputStream::~MemoryOutputStream()
{
}
bool MemoryOutputStream::IsEmpty()
{
return Available() == 0LL;
}
int64_t MemoryOutputStream::Available()
{
return (int64_t)(_buffer_size - _buffer_index);
}
int64_t MemoryOutputStream::Write(int64_t b)
{
if (IsEmpty() == true) {
return 0LL;
}
_buffer[_buffer_index++] = (uint8_t)b;
return 1LL;
}
int64_t MemoryOutputStream::Write(char *data, int64_t size)
{
if (IsEmpty() == true) {
return 0LL;
}
if (size > Available()) {
size = Available();
}
memcpy((uint8_t*)(_buffer + _buffer_index), data, (uint32_t)size);
_buffer_index = _buffer_index + size;
return size;
}
int64_t MemoryOutputStream::Flush()
{
return 0LL;
}
void MemoryOutputStream::Close()
{
// DO:: nothing
}
int64_t MemoryOutputStream::GetSentBytes()
{
return _buffer_index;
}
}