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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 code is based on original Soltys source code
* Copyright (c) 1994-1995 Janus B. Wisniewski and L.K. Avalon
*/
#include "cge/vol.h"
#include "common/system.h"
#include "common/str.h"
#include <stdlib.h>
#include <string.h>
#include <errno.h>
namespace CGE {
DAT *VFILE::_Dat = NULL;
BTFILE *VFILE::_Cat = NULL;
VFILE *VFILE::_Recent = NULL;
/*-----------------------------------------------------------------------*/
DAT::DAT():
#ifdef VOL_UPD
_File(DAT_NAME, UPD, CRP)
#else
_File(DAT_NAME, REA, CRP)
#endif
{
}
/*-----------------------------------------------------------------------*/
void VFILE::init() {
_Dat = new DAT();
#ifdef VOL_UPD
_Cat = new BTFILE(CAT_NAME, UPD, CRP);
#else
_Cat = new BTFILE(CAT_NAME, REA, CRP);
#endif
_Recent = NULL;
}
void VFILE::deinit() {
delete _Dat;
delete _Cat;
}
VFILE::VFILE(const char *name, IOMODE mode)
: IOBUF(mode) {
if (mode == REA) {
if (_Dat->_File.Error || _Cat->Error)
error("Bad volume data");
BT_KEYPACK *kp = _Cat->Find(name);
if (scumm_stricmp(kp->Key, name) != 0)
Error = 1;
EndMark = (BufMark = BegMark = kp->Mark) + kp->Size;
}
#ifdef VOL_UPD
else
Make(name);
#endif
}
VFILE::~VFILE(void) {
if (_Recent == this)
_Recent = NULL;
}
bool VFILE::Exist(const char *name) {
return scumm_stricmp(_Cat->Find(name)->Key, name) == 0;
}
void VFILE::ReadBuff(void) {
if (_Recent != this) {
_Dat->_File.Seek(BufMark + Lim);
_Recent = this;
}
BufMark = _Dat->_File.Mark();
long n = EndMark - BufMark;
if (n > IOBUF_SIZE)
n = IOBUF_SIZE;
Lim = _Dat->_File.Read(Buff, (uint16) n);
Ptr = 0;
}
} // End of namespace CGE
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