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https://github.com/libretro/scummvm.git
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104 lines
2.7 KiB
C++
104 lines
2.7 KiB
C++
/* ScummVM - Graphic Adventure Engine
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*
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* ScummVM is the legal property of its developers, whose names
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* are too numerous to list here. Please refer to the COPYRIGHT
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* file distributed with this source distribution.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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*/
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/*
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* This file is based on WME Lite.
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* http://dead-code.org/redir.php?target=wmelite
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* Copyright (c) 2011 Jan Nedoma
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*/
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#include "dcgf.h"
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#include "BResourceFile.h"
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#include "BResources.h"
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namespace WinterMute {
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//////////////////////////////////////////////////////////////////////////
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CBResourceFile::CBResourceFile(CBGame *inGame): CBFile(inGame) {
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_data = NULL;
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}
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//////////////////////////////////////////////////////////////////////////
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CBResourceFile::~CBResourceFile() {
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Close();
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}
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//////////////////////////////////////////////////////////////////////////
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HRESULT CBResourceFile::Open(Common::String Filename) {
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Close();
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if (CBResources::GetFile(Filename.c_str(), _data, _size)) {
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_pos = 0;
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return S_OK;
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}
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return E_FAIL;
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}
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//////////////////////////////////////////////////////////////////////////
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HRESULT CBResourceFile::Close() {
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_data = NULL;
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_pos = 0;
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_size = 0;
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return S_OK;
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}
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//////////////////////////////////////////////////////////////////////////
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HRESULT CBResourceFile::Read(void *Buffer, uint32 Size) {
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if (!_data || _pos + Size > _size) return E_FAIL;
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memcpy(Buffer, (byte *)_data + _pos, Size);
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_pos += Size;
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return S_OK;
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}
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//////////////////////////////////////////////////////////////////////////
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HRESULT CBResourceFile::Seek(uint32 Pos, TSeek Origin) {
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if (!_data) return E_FAIL;
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uint32 NewPos = 0;
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switch (Origin) {
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case SEEK_TO_BEGIN:
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NewPos = Pos;
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break;
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case SEEK_TO_END:
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NewPos = _size + Pos;
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break;
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case SEEK_TO_CURRENT:
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NewPos = _pos + Pos;
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break;
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}
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if (NewPos < 0 || NewPos > _size) return E_FAIL;
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else _pos = NewPos;
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return S_OK;
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}
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} // end of namespace WinterMute
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