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/* ScummVM - Scumm Interpreter
* Copyright (C) 2002-2005 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/stdafx.h"
#include "common/util.h"
#include "common/config-manager.h"
#include "common/savefile.h"
#include <stdio.h>
#include <string.h>
#ifdef USE_ZLIB
#include <zlib.h>
#endif
namespace Common {
const char *SaveFileManager::getSavePath() const {
#if defined(__PALM_OS__)
return SCUMMVM_SAVEPATH;
#else
const char *dir = NULL;
// Try to use game specific savepath from config
dir = ConfMan.get("savepath").c_str();
// Work around a bug (#999122) in the original 0.6.1 release of
// ScummVM, which would insert a bad savepath value into config files.
if (0 == strcmp(dir, "None")) {
ConfMan.removeKey("savepath", ConfMan.getActiveDomain());
ConfMan.flushToDisk();
dir = ConfMan.get("savepath").c_str();
}
#ifdef _WIN32_WCE
if (dir[0] == 0)
dir = ConfMan.get("path").c_str();
#endif
assert(dir);
return dir;
#endif
}
class StdioSaveFile : public SaveFile {
private:
FILE *fh;
public:
StdioSaveFile(const char *filename, bool saveOrLoad) {
fh = ::fopen(filename, (saveOrLoad? "wb" : "rb"));
}
~StdioSaveFile() {
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 != 0; }
uint32 read(void *dataPtr, uint32 dataSize) {
return ::fread(dataPtr, 1, dataSize, fh);
}
uint32 write(const void *dataPtr, uint32 dataSize) {
return ::fwrite(dataPtr, 1, dataSize, fh);
}
void skip(uint32 offset) {
::fseek(fh, offset, SEEK_CUR);
}
};
#ifdef USE_ZLIB
class GzipSaveFile : public SaveFile {
private:
gzFile fh;
bool _ioError;
public:
GzipSaveFile(const char *filename, bool saveOrLoad) {
_ioError = false;
fh = ::gzopen(filename, (saveOrLoad? "wb" : "rb"));
}
~GzipSaveFile() {
if (fh)
::gzclose(fh);
}
bool eos() const { return gzeof(fh) != 0; }
bool ioFailed() const { return _ioError; }
void clearIOFailed() { _ioError = false; }
bool isOpen() const { return fh != 0; }
uint32 read(void *dataPtr, uint32 dataSize) {
int ret = ::gzread(fh, dataPtr, dataSize);
if (ret <= -1)
_ioError = true;
return ret;
}
uint32 write(const void *dataPtr, uint32 dataSize) {
// Due to a "bug" in the zlib headers (or maybe I should say,
// a bug in the C++ spec? Whatever <g>) we have to be a bit
// hackish here and remove the const qualifier.
// Note that gzwrite's buf param is declared as "const voidp"
// which you might think is the same as "const void *" but it
// is not - rather it is equal to "void const *" which is the
// same as "void *". Hrmpf
int ret = ::gzwrite(fh, const_cast<void *>(dataPtr), dataSize);
if (ret <= 0)
_ioError = true;
return ret;
}
void skip(uint32 offset) {
::gzseek(fh, offset, SEEK_CUR);
}
};
#endif
static void 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) {
#if defined(__MORPHOS__) || defined(__amigaos4__)
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);
}
OutSaveFile *DefaultSaveFileManager::openForSaving(const char *filename) {
char buf[256];
join_paths(filename, getSavePath(), buf, sizeof(buf));
return makeSaveFile(buf, true);
}
InSaveFile *DefaultSaveFileManager::openForLoading(const char *filename) {
char buf[256];
join_paths(filename, getSavePath(), buf, sizeof(buf));
return makeSaveFile(buf, false);
}
void DefaultSaveFileManager::listSavefiles(const char * /* prefix */, bool *marks, int num) {
memset(marks, true, num * sizeof(bool));
}
SaveFile *DefaultSaveFileManager::makeSaveFile(const char *filename, bool saveOrLoad) {
#ifdef USE_ZLIB
GzipSaveFile *sf = new GzipSaveFile(filename, saveOrLoad);
#else
StdioSaveFile *sf = new StdioSaveFile(filename, saveOrLoad);
#endif
if (!sf->isOpen()) {
delete sf;
sf = 0;
}
return sf;
}
} // End of namespace Common
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