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/* ScummVM - Scumm Interpreter
* Copyright (C) 2002-2003 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 "common/savefile.h"
#include "common/util.h"
uint32 SaveFile::read(void *ptr, uint32 size)
{
return fread(ptr, 1, size);
}
byte SaveFile::readByte()
{
byte b;
if (fread(&b, 1, 1) != 1)
return 0;
return b;
}
uint16 SaveFile::readUint16LE() {
uint16 a = readByte();
uint16 b = readByte();
return a | (b << 8);
}
uint32 SaveFile::readUint32LE() {
uint32 a = readUint16LE();
uint32 b = readUint16LE();
return (b << 16) | a;
}
uint16 SaveFile::readUint16BE() {
uint16 b = readByte();
uint16 a = readByte();
return a | (b << 8);
}
uint32 SaveFile::readUint32BE() {
uint32 b = readUint16BE();
uint32 a = readUint16BE();
return (b << 16) | a;
}
uint32 SaveFile::write(const void *ptr, uint32 size)
{
return fwrite(ptr, 1, size);
}
void SaveFile::writeByte(byte value)
{
fwrite(&value, 1, 1);
}
void SaveFile::writeUint16LE(uint16 value) {
writeByte((byte)(value & 0xff));
writeByte((byte)(value >> 8));
}
void SaveFile::writeUint32LE(uint32 value) {
writeUint16LE((uint16)(value & 0xffff));
writeUint16LE((uint16)(value >> 16));
}
void SaveFile::writeUint16BE(uint16 value) {
writeByte((byte)(value >> 8));
writeByte((byte)(value & 0xff));
}
void SaveFile::writeUint32BE(uint32 value) {
writeUint16BE((uint16)(value >> 16));
writeUint16BE((uint16)(value & 0xffff));
}
SaveFile *SaveFileManager::open_savefile(const char *filename, const char *directory, bool saveOrLoad)
{
char buf[256];
join_paths(filename, directory, buf, sizeof(buf));
StdioSaveFile *sf = new StdioSaveFile(buf,
(saveOrLoad? "wb":"rb"));
if (!sf->is_open()) {
delete sf;
sf = NULL;
}
return sf;
}
void SaveFileManager::join_paths(const char *filename, const char *directory,
char *buf, int bufsize)
{
buf[bufsize-1] = '\0';
strncpy(buf, directory, bufsize-1);
#ifdef WIN32
// Fix for Win98 issue related with game directory pointing to root drive ex. "c:\"
if ((buf[0] != 0) && (buf[1] == ':') && (buf[2] == '\\') && (buf[3] == 0)) {
buf[2] = 0;
}
#endif
const int dirLen = strlen(buf);
if (dirLen > 0) {
#ifdef __MORPHOS__
if (buf[dirLen-1] != ':' && buf[dirLen-1] != '/')
#endif
#if !defined(__GP32__) && !defined(__PALM_OS__)
strncat(buf, "/", bufsize-1); // prevent double /
#endif
}
strncat(buf, filename, bufsize-1);
}
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