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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 {
#ifdef VOL_UPD
BTFILE VFILE::Cat(CAT_NAME, UPD, CRP);
VOLBASE DAT::File(DAT_NAME, UPD, CRP);
#else
BTFILE VFILE::Cat(CAT_NAME, REA, CRP);
VOLBASE DAT::File(DAT_NAME, REA, CRP);
#endif
DAT VFILE::Dat;
VFILE * VFILE::Recent = NULL;
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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