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- Removed cache since new stdio functions do it

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- Renamed class. Will be remove when new backends will be done

svn-id: r19052
This commit is contained in:
Chris Apers 2005-10-12 21:01:11 +00:00
parent 5e1af3190c
commit d94b48f946
1 changed files with 44 additions and 99 deletions
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143
backends/PalmOS/Src/palmsave.cpp
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@ -20,111 +20,56 @@
*
*/
#include <ctype.h>
#include "common/stdafx.h"
#include "stdafx.h"
#include "common/savefile.h"
#include "palm.h"
#define MAX_BLOCK 64000 // store in memory, before dump to file
// SaveFile class
class PalmSaveFile : public Common::SaveFile {
class OldPalmSaveFile : public Common::SaveFile {
private:
FILE *fh;
public:
PalmSaveFile(const char *filename, bool saveOrLoad);
~PalmSaveFile();
OldPalmSaveFile(const char *filename, bool saveOrLoad) {
fh = ::fopen(filename, (saveOrLoad? "wb" : "rb"));
}
~OldPalmSaveFile() {
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 file != NULL; }
bool isOpen() const { return fh != NULL; }
uint32 read(void *buf, uint32 size);
uint32 write(const void *buf, uint32 size);
private :
FILE *file;
UInt8 *_readWriteData;
UInt32 _readWritePos;
bool _needDump;
UInt32 length;
void skip(uint32 offset) {
::fseek(fh, offset, SEEK_CUR);
}
};
PalmSaveFile::PalmSaveFile(const char *filename, bool saveOrLoad) {
_readWriteData = NULL;
_readWritePos = 0;
_needDump = false;
file = ::fopen(filename, (saveOrLoad ? "wb" : "rb"));
if (file) {
if (saveOrLoad) {
_readWriteData = (byte *)malloc(MAX_BLOCK);
} else {
// read : cache the whole file
::fseek(file, 0, SEEK_END);
length = ::ftell(file);
::fseek(file, 0, SEEK_SET);
_readWriteData = (byte *)malloc(length);
_readWritePos = 0;
if (_readWriteData)
::fread(_readWriteData, 1, length, file);
}
}
}
PalmSaveFile::~PalmSaveFile() {
if (file) {
if (_needDump)
::fwrite(_readWriteData, _readWritePos, 1, file);
if (_readWriteData)
free(_readWriteData);
::fclose(file);
}
}
uint32 PalmSaveFile::read(void *buf, uint32 size) {
if (!_readWriteData)
// we must return the size, where fread return nitems upon success ( 1 <=> size)
return (::fread(buf, 1, size, file));
if (_readWritePos < length) {
MemMove(buf, _readWriteData + _readWritePos, size);
_readWritePos += size;
return size;
}
uint32 OldPalmSaveFile::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) {
if (_readWriteData) {
if ((_readWritePos + size) > MAX_BLOCK) {
if (_readWritePos > 0)
::fwrite(_readWriteData, _readWritePos, 1, file);
_readWritePos = 0;
_needDump = false;
} else {
// save new block
MemMove(_readWriteData + _readWritePos, buf, size);
_readWritePos += size;
_needDump = true;
return size;
}
}
uint32 OldPalmSaveFile::write(const void *buf, uint32 size) {
// we must return the size, where fwrite return nitems upon success ( 1 <=> size)
return ::fwrite(buf, 1, size, file);
if (fh) return ::fwrite(buf, 1, size, fh);
return 0;
}
// SaveFileManager class
class PalmSaveFileManager : public SaveFileManager {
class OldPalmSaveFileManager : public Common::SaveFileManager {
public:
virtual Common::OutSaveFile *openForSaving(const char *filename) {
return openSavefile(filename, true);
@ -140,25 +85,19 @@ protected:
Common::SaveFile *makeSaveFile(const char *filename, bool saveOrLoad);
};
Common::SaveFile *PalmSaveFileManager::openSavefile(const char *filename, bool saveOrLoad) {
Common::SaveFile *OldPalmSaveFileManager::openSavefile(const char *filename, bool saveOrLoad) {
char buf[256];
strncpy(buf, getSavePath(), sizeof(buf));
strncat(buf, filename, sizeof(buf));
Common::SaveFile *sf = makeSaveFile(buf, saveOrLoad);
if (!sf->isOpen()) {
delete sf;
sf = NULL;
}
return sf;
return makeSaveFile(buf, saveOrLoad);
}
void PalmSaveFileManager::listSavefiles(const char *prefix, bool *marks, int num) {
void OldPalmSaveFileManager::listSavefiles(const char *prefix, bool *marks, int num) {
FileRef fileRef;
// try to open the dir
Err e = VFSFileOpen(gVars->volRefNum, getSavePath(), vfsModeRead, &fileRef);
Err e = VFSFileOpen(gVars->VFS.volRefNum, getSavePath(), vfsModeRead, &fileRef);
memset(marks, false, num*sizeof(bool));
if (e != errNone)
@ -194,11 +133,17 @@ void PalmSaveFileManager::listSavefiles(const char *prefix, bool *marks, int num
VFSFileClose(fileRef);
}
Common::SaveFile *PalmSaveFileManager::makeSaveFile(const char *filename, bool saveOrLoad) {
return new PalmSaveFile(filename, saveOrLoad);
Common::SaveFile *OldPalmSaveFileManager::makeSaveFile(const char *filename, bool saveOrLoad) {
OldPalmSaveFile *sf = new OldPalmSaveFile(filename, saveOrLoad);
if (!sf->isOpen()) {
delete sf;
sf = 0;
}
return sf;
}
// OSystem
Common::SaveFileManager *OSystem_PALMOS::getSavefileManager() {
return new PalmSaveFileManager();
return new OldPalmSaveFileManager();
}