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/* ScummVM - Scumm Interpreter
* Copyright (C) 2001 Ludvig Strigeus
* Copyright (C) 2001-2003 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 <ctype.h>
#include "common/scummsys.h"
#include "base/engine.h"
#include "scumm/saveload.h"
#include "palm.h"
#define MAX_BLOCK 64000 // store in memory, before dump to file
// SaveFile class
class PalmSaveFile : public SaveFile {
public:
PalmSaveFile(const char *filename, const char *mode);
~PalmSaveFile();
bool is_open() { return file != NULL; }
protected:
int fread(void *buf, int size, int cnt);
int fwrite(const void *buf, int size, int cnt);
private :
FILE *file;
UInt8 * _readWriteData;
UInt32 _readWritePos;
bool _needDump;
};
PalmSaveFile::PalmSaveFile(const char *filename, const char *mode) {
_readWriteData = NULL;
_readWritePos = 0;
_needDump = false;
file = ::fopen(filename, mode);
}
PalmSaveFile::~PalmSaveFile() {
if (file) {
if (_needDump && _readWriteData) {
::fwrite(_readWriteData, _readWritePos, 1, file);
free(_readWriteData);
}
::fclose(file);
}
}
int PalmSaveFile::fread(void *buf, int size, int cnt) {
return ::fread(buf, size, cnt, file);
}
int PalmSaveFile::fwrite(const void *buf, int size, int cnt) {
UInt32 fullsize = size*cnt;
if (fullsize <= MAX_BLOCK)
{
if (!_readWriteData)
_readWriteData = (byte *)malloc(MAX_BLOCK);
if ((_readWritePos+fullsize)>MAX_BLOCK) {
::fwrite(_readWriteData, _readWritePos, 1, file);
_readWritePos = 0;
_needDump = false;
}
MemMove(_readWriteData + _readWritePos, buf, fullsize);
_readWritePos += fullsize;
_needDump = true;
return cnt;
}
return ::fwrite(buf, size, cnt, file);
}
// SaveFileManager class
class PalmSaveFileManager : public SaveFileManager {
public:
SaveFile *open_savefile(const char *filename, const char *dirname, bool saveOrLoad);
void list_savefiles(const char *prefix, const char *directory, bool *marks, int num);
};
SaveFile *PalmSaveFileManager::open_savefile(const char *filename, const char *dirname, bool saveOrLoad) {
char buf[256];
join_paths(filename, dirname, buf, sizeof(buf));
PalmSaveFile *sf = new PalmSaveFile(buf, (saveOrLoad? "wb":"rb"));
if(!sf->is_open()) {
delete sf;
sf = NULL;
}
return sf;
}
void PalmSaveFileManager::list_savefiles(const char *prefix, const char *directory, bool *marks, int num) {
FileRef fileRef;
// try to open the dir
Err e = VFSFileOpen(gVars->volRefNum, directory, vfsModeRead, &fileRef);
memset(marks, false, num*sizeof(bool));
if (e != errNone)
return;
// enumerate all files
UInt32 dirEntryIterator = vfsIteratorStart;
Char filename[32];
FileInfoType info = {0, filename, 32};
UInt16 length = StrLen(prefix);
int slot = 0;
while (dirEntryIterator != vfsIteratorStop) {
e = VFSDirEntryEnumerate (fileRef, &dirEntryIterator, &info);
if (e != expErrEnumerationEmpty) { // there is something
if (StrLen(info.nameP) == (length + 2)) { // consider max 99, filename length is ok
if (StrNCaselessCompare(prefix, info.nameP, length) == 0) { // this seems to be a save file
if (isdigit(info.nameP[length]) && isdigit(info.nameP[length+1])) {
slot = StrAToI(filename + length);
if (slot >= 0 && slot < num)
*(marks+slot) = true;
}
}
}
}
}
VFSFileClose(fileRef);
}
// OSystem
SaveFileManager *OSystem_PALMOS::get_savefile_manager() {
return new PalmSaveFileManager();
}
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