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/* ScummVM - Scumm Interpreter
* Copyright (C) 2001 Ludvig Strigeus
* Copyright (C) 2001-2006 The ScummVM project
* Copyright (C) 2002-2006 Chris Apers - PalmOS Backend
*
* 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.
*
* $URL$
* $Id$
*
*/
#include "be_base.h"
#include "common/savefile.h"
// SaveFile class
class PalmSaveFile : public Common::SaveFile {
private:
FILE *fh;
public:
PalmSaveFile(const char *filename, bool saveOrLoad) {
fh = ::fopen(filename, (saveOrLoad? "wb" : "rb"));
}
~PalmSaveFile() {
if (fh) ::fclose(fh);
}
bool eos() const { return feof(fh) != 0; }
bool ioFailed() const { return ferror(fh) != 0; }
void clearIOFailed() { clearerr(fh); }
bool isOpen() const { return fh != NULL; }
uint32 read(void *buf, uint32 size);
uint32 write(const void *buf, uint32 size);
uint32 pos() const {
assert(fh);
return ftell(fh);
}
uint32 size() const {
assert(fh);
uint32 oldPos = ftell(fh);
fseek(fh, 0, SEEK_END);
uint32 length = ftell(fh);
fseek(fh, oldPos, SEEK_SET);
return length;
}
void seek(int32 offs, int whence = SEEK_SET) {
assert(fh);
fseek(fh, offs, whence);
}
};
uint32 PalmSaveFile::read(void *buf, uint32 size) {
// we must return the size, where fread return nitems upon success ( 1 <=> size)
if (fh) return (::fread(buf, 1, size, fh));
return 0;
}
uint32 PalmSaveFile::write(const void *buf, uint32 size) {
// we must return the size, where fwrite return nitems upon success ( 1 <=> size)
if (fh) return ::fwrite(buf, 1, size, fh);
return 0;
}
// SaveFileManager class
class PalmSaveFileManager : public Common::SaveFileManager {
public:
virtual Common::OutSaveFile *openForSaving(const char *filename) {
return openSavefile(filename, true);
}
virtual Common::InSaveFile *openForLoading(const char *filename) {
return openSavefile(filename, false);
}
Common::SaveFile *openSavefile(const char *filename, bool saveOrLoad);
void listSavefiles(const char *prefix, bool *marks, int num);
protected:
Common::SaveFile *makeSaveFile(const char *filename, bool saveOrLoad);
};
Common::SaveFile *PalmSaveFileManager::openSavefile(const char *filename, bool saveOrLoad) {
char buf[256];
strcpy(buf, getSavePath());
strcat(buf, "/");
strcat(buf, filename);
return makeSaveFile(buf, saveOrLoad);
}
void PalmSaveFileManager::listSavefiles(const char *prefix, bool *marks, int num) {
FileRef fileRef;
// try to open the dir
Err e = VFSFileOpen(gVars->VFS.volRefNum, getSavePath(), 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);
}
Common::SaveFile *PalmSaveFileManager::makeSaveFile(const char *filename, bool saveOrLoad) {
PalmSaveFile *sf = new PalmSaveFile(filename, saveOrLoad);
if (!sf->isOpen()) {
delete sf;
sf = 0;
}
return sf;
}
Common::SaveFileManager *OSystem_PalmBase::getSavefileManager() {
return new PalmSaveFileManager();
}
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