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/* ScummVM - Graphic Adventure Engine
*
* ScummVM is the legal property of its developers, whose names
* are too numerous to list here. Please refer to the COPYRIGHT
* file distributed with this source distribution.
*
* 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.
*
* $URL$
* $Id$
*
*/
#if !defined(DISABLE_DEFAULT_SAVEFILEMANAGER)
#include "common/stdafx.h"
#include "common/savefile.h"
#include "common/util.h"
#include "common/fs.h"
#include "common/file.h"
#include "backends/saves/default/default-saves.h"
#include "backends/saves/compressed/compressed-saves.h"
#include <stdio.h>
#include <string.h>
#if defined(UNIX) || defined(__SYMBIAN32__)
#include <errno.h>
#include <sys/stat.h>
#endif
class StdioSaveFile : public Common::InSaveFile, public Common::OutSaveFile {
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) {
assert(fh);
return fread(dataPtr, 1, dataSize, fh);
}
uint32 write(const void *dataPtr, uint32 dataSize) {
assert(fh);
return fwrite(dataPtr, 1, dataSize, fh);
}
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);
}
};
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__)
strncat(buf, "/", bufsize-1); // prevent double /
#endif
}
strncat(buf, filename, bufsize-1);
}
Common::OutSaveFile *DefaultSaveFileManager::openForSaving(const char *filename) {
char buf[256];
// Ensure that the savepath exists and is writeable. If not, generate
// an appropriate error
const char *savePath = getSavePath();
#if defined(UNIX) || defined(__SYMBIAN32__)
struct stat sb;
clearError();
// Check whether the dir exists
if (stat(savePath, &sb) == -1) {
// The dir does not exist, or stat failed for some other reason.
// If the problem was that the path pointed to nothing, try
// to create the dir (ENOENT case).
switch (errno) {
case EACCES:
setError(SFM_DIR_ACCESS, Common::String("Search or write permission denied"));
break;
case ELOOP:
setError(SFM_DIR_LOOP, Common::String("Too many symbolic links encountered while traversing the path"));
break;
case ENAMETOOLONG:
setError(SFM_DIR_NAMETOOLONG, Common::String("The path name is too long"));
break;
case ENOENT:
if (mkdir(savePath, 0755) != 0) {
// mkdir could fail for various reasons: The parent dir doesn't exist,
// or is not writeable, the path could be completly bogus, etc.
warning("mkdir for '%s' failed!", savePath);
perror("mkdir");
switch (errno) {
case EACCES:
setError(SFM_DIR_ACCESS, Common::String("Search or write permission denied"));
break;
case EMLINK:
setError(SFM_DIR_LINKMAX, Common::String("The link count of the parent directory would exceed {LINK_MAX}"));
break;
case ELOOP:
setError(SFM_DIR_LOOP, Common::String("Too many symbolic links encountered while traversing the path"));
break;
case ENAMETOOLONG:
setError(SFM_DIR_NAMETOOLONG, Common::String("The path name is too long"));
break;
case ENOENT:
setError(SFM_DIR_NOENT, Common::String("A component of the path path does not exist, or the path is an empty string"));
break;
case ENOTDIR:
setError(SFM_DIR_NOTDIR, Common::String("A component of the path prefix is not a directory"));
break;
case EROFS:
setError(SFM_DIR_ROFS, Common::String("The parent directory resides on a read-only file system"));
break;
}
return 0;
}
break;
case ENOTDIR:
setError(SFM_DIR_NOTDIR, Common::String("A component of the path prefix is not a directory"));
break;
}
} else {
// So stat() succeeded. But is the path actually pointing to a directory?
if (!S_ISDIR(sb.st_mode)) {
setError(SFM_DIR_NOTDIR, Common::String("The given savepath is not a directory"));
return 0;
}
}
#endif
join_paths(filename, savePath, buf, sizeof(buf));
StdioSaveFile *sf = new StdioSaveFile(buf, true);
if (!sf->isOpen()) {
delete sf;
sf = 0;
}
return wrapOutSaveFile(sf);
}
Common::InSaveFile *DefaultSaveFileManager::openForLoading(const char *filename) {
char buf[256];
join_paths(filename, getSavePath(), buf, sizeof(buf));
StdioSaveFile *sf = new StdioSaveFile(buf, false);
if (!sf->isOpen()) {
delete sf;
sf = 0;
}
return wrapInSaveFile(sf);
}
bool DefaultSaveFileManager::removeSavefile(const char *filename) {
Common::File file;
FilesystemNode savePath(filename);
return file.remove(savePath);
}
Common::StringList DefaultSaveFileManager::listSavefiles(const char *regex) {
FilesystemNode savePath(getSavePath());
FSList savefiles;
Common::StringList results;
Common::String search(regex);
if(savePath.lookupFile(savefiles, savePath, search, false, true)) {
for(FSList::const_iterator file = savefiles.begin(); file != savefiles.end(); file++) {
results.push_back(file->getPath());
}
}
return results;
}
#endif // !defined(DISABLE_DEFAULT_SAVEFILEMANAGER)
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