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/* ScummVM - Scumm Interpreter
* Copyright (C) 2001 Ludvig Strigeus
* Copyright (C) 2001/2002 The ScummVM project
*
* 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.
*
* $Header$
*
*/
#include "stdafx.h"
#include "scumm.h"
void *Scumm::fileOpen(const char *filename, int mode)
{
clearFileReadFailed(_fileHandle);
if (mode == 1)
return fopen(filename, "rb");
error("This should not happen!");
return NULL;
}
void Scumm::fileClose(void *file)
{
if (file)
fclose((FILE *)file);
}
bool Scumm::fileReadFailed(void *file)
{
return _fileReadFailed != 0;
}
void Scumm::clearFileReadFailed(void *file)
{
_fileReadFailed = false;
}
bool Scumm::fileEof(void *file)
{
return feof((FILE *)file) != 0;
}
uint32 Scumm::filePos(void *handle)
{
return ftell((FILE *)handle);
}
void Scumm::fileSeek(void *file, long offs, int whence)
{
if (fseek((FILE *)file, offs, whence) != 0)
clearerr((FILE *)file);
}
void Scumm::fileRead(void *file, void *ptr, uint32 size)
{
byte *ptr2 = (byte *)ptr;
if (size == 0)
return;
if ((uint32)fread(ptr2, size, 1, (FILE *)file) != 1) {
clearerr((FILE *)file);
_fileReadFailed = true;
}
do {
*ptr2++ ^= _encbyte;
} while (--size);
}
int Scumm::fileReadByte()
{
byte b;
if (fread(&b, 1, 1, (FILE *)_fileHandle) != 1) {
clearerr((FILE *)_fileHandle);
_fileReadFailed = true;
}
return b ^ _encbyte;
}
uint Scumm::fileReadWordLE()
{
uint a = fileReadByte();
uint b = fileReadByte();
return a | (b << 8);
}
uint32 Scumm::fileReadDwordLE()
{
uint a = fileReadWordLE();
uint b = fileReadWordLE();
return (b << 16) | a;
}
uint Scumm::fileReadWordBE()
{
uint b = fileReadByte();
uint a = fileReadByte();
return a | (b << 8);
}
uint32 Scumm::fileReadDwordBE()
{
uint b = fileReadWordBE();
uint a = fileReadWordBE();
return (b << 16) | a;
}
/* Overloaded versions */
int Scumm::fileReadByte(void *handle)
{
byte b;
if (fread(&b, 1, 1, (FILE *)handle) != 1) {
clearerr((FILE *)handle);
_fileReadFailed = true;
}
return b ^ _encbyte;
}
uint Scumm::fileReadWordLE(void *handle)
{
uint a = fileReadByte(handle);
uint b = fileReadByte(handle);
return a | (b << 8);
}
uint32 Scumm::fileReadDwordLE(void *handle)
{
uint a = fileReadWordLE(handle);
uint b = fileReadWordLE(handle);
return (b << 16) | a;
}
uint Scumm::fileReadWordBE(void *handle)
{
uint b = fileReadByte(handle);
uint a = fileReadByte(handle);
return a | (b << 8);
}
uint32 Scumm::fileReadDwordBE(void *handle)
{
uint b = fileReadWordBE(handle);
uint a = fileReadWordBE(handle);
return (b << 16) | a;
}
bool Scumm::checkFixedDisk()
{
return true;
}
#ifdef NEED_STRDUP
char *strdup(const char *s);
#endif /* NEED_STRDUP */
void *operator new(size_t size) {
return calloc(size, 1);
}
void operator delete(void *ptr) {
free(ptr);
}
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