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/* ScummVM - Graphic Adventure Engine
*
* ScummVM is the legal property of its developers, whose names
* are too numerous to list here. Please refer to the COPYRIGHT
* file distributed with this source distribution.
*
* 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
*/
/*
* This file is based on WME Lite.
* http://dead-code.org/redir.php?target=wmelite
* Copyright (c) 2011 Jan Nedoma
*/
#include "engines/wintermute/Base/BGame.h"
#include "engines/wintermute/Base/BDynBuffer.h"
namespace WinterMute {
//////////////////////////////////////////////////////////////////////////
CBDynBuffer::CBDynBuffer(CBGame *inGame, uint32 initSize, uint32 growBy): CBBase(inGame) {
_buffer = NULL;
_size = 0;
_realSize = 0;
_offset = 0;
_initSize = initSize;
_growBy = growBy;
_initialized = false;
}
//////////////////////////////////////////////////////////////////////////
CBDynBuffer::~CBDynBuffer() {
cleanup();
}
//////////////////////////////////////////////////////////////////////////
void CBDynBuffer::cleanup() {
if (_buffer) free(_buffer);
_buffer = NULL;
_size = 0;
_realSize = 0;
_offset = 0;
_initialized = false;
}
//////////////////////////////////////////////////////////////////////////
uint32 CBDynBuffer::getSize() {
return _size;
}
//////////////////////////////////////////////////////////////////////////
bool CBDynBuffer::init(uint32 initSize) {
cleanup();
if (initSize == 0) initSize = _initSize;
_buffer = (byte *)malloc(initSize);
if (!_buffer) {
_gameRef->LOG(0, "CBDynBuffer::Init - Error allocating %d bytes", initSize);
return STATUS_FAILED;
}
_realSize = initSize;
_initialized = true;
return STATUS_OK;
}
//////////////////////////////////////////////////////////////////////////
bool CBDynBuffer::putBytes(byte *buffer, uint32 size) {
if (!_initialized) init();
while (_offset + size > _realSize) {
_realSize += _growBy;
_buffer = (byte *)realloc(_buffer, _realSize);
if (!_buffer) {
_gameRef->LOG(0, "CBDynBuffer::PutBytes - Error reallocating buffer to %d bytes", _realSize);
return STATUS_FAILED;
}
}
memcpy(_buffer + _offset, buffer, size);
_offset += size;
_size += size;
return STATUS_OK;
}
//////////////////////////////////////////////////////////////////////////
bool CBDynBuffer::getBytes(byte *buffer, uint32 size) {
if (!_initialized) init();
if (_offset + size > _size) {
_gameRef->LOG(0, "CBDynBuffer::GetBytes - Buffer underflow");
return STATUS_FAILED;
}
memcpy(buffer, _buffer + _offset, size);
_offset += size;
return STATUS_OK;
}
//////////////////////////////////////////////////////////////////////////
void CBDynBuffer::putDWORD(uint32 val) {
putBytes((byte *)&val, sizeof(uint32));
}
//////////////////////////////////////////////////////////////////////////
uint32 CBDynBuffer::getDWORD() {
uint32 ret;
getBytes((byte *)&ret, sizeof(uint32));
return ret;
}
//////////////////////////////////////////////////////////////////////////
void CBDynBuffer::putString(const char *val) {
if (!val) putString("(null)");
else {
putDWORD(strlen(val) + 1);
putBytes((byte *)val, strlen(val) + 1);
}
}
//////////////////////////////////////////////////////////////////////////
char *CBDynBuffer::getString() {
uint32 len = getDWORD();
char *ret = (char *)(_buffer + _offset);
_offset += len;
if (!strcmp(ret, "(null)")) return NULL;
else return ret;
}
//////////////////////////////////////////////////////////////////////////
void CBDynBuffer::putText(const char *fmt, ...) {
va_list va;
va_start(va, fmt);
putTextForm(fmt, va);
va_end(va);
}
//////////////////////////////////////////////////////////////////////////
void CBDynBuffer::putTextIndent(int indent, const char *fmt, ...) {
va_list va;
putText("%*s", indent, "");
va_start(va, fmt);
putTextForm(fmt, va);
va_end(va);
}
//////////////////////////////////////////////////////////////////////////
void CBDynBuffer::putTextForm(const char *format, va_list argptr) {
char buff[32768];
vsprintf(buff, format, argptr);
putBytes((byte *)buff, strlen(buff));
}
} // end of namespace WinterMute
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