/**
* Open/Create snapshot file, and set flag so 'MemorySnapShot_Store' knows
* how to handle data.
*/
static bool MemorySnapShot_OpenFile(const char *pszFileName, bool bSave)
{
char VersionString[] = VERSION_STRING;
/* Set error */
bCaptureError = false;
/* after opening file, set bCaptureSave to indicate whether
* 'MemorySnapShot_Store' should load from or save to a file
*/
if (bSave)
{
if (!File_QueryOverwrite(pszFileName))
return false;
/* Save */
CaptureFile = MemorySnapShot_fopen(pszFileName, "wb");
if (!CaptureFile)
{
fprintf(stderr, "Failed to open save file '%s': %s\n",
pszFileName, strerror(errno));
bCaptureError = true;
return false;
}
bCaptureSave = true;
/* Store version string */
MemorySnapShot_Store(VersionString, sizeof(VersionString));
}
else
{
/* Restore */
CaptureFile = MemorySnapShot_fopen(pszFileName, "rb");
if (!CaptureFile)
{
fprintf(stderr, "Failed to open file '%s': %s\n",
pszFileName, strerror(errno));
bCaptureError = true;
return false;
}
bCaptureSave = false;
/* Restore version string */
MemorySnapShot_Store(VersionString, sizeof(VersionString));
/* Does match current version? */
if (strcasecmp(VersionString, VERSION_STRING))
{
/* No, inform user and error */
Log_AlertDlg(LOG_ERROR, "Unable to restore Hatari memory state. File\n"
"is compatible only with Hatari version %s.",
VersionString);
bCaptureError = true;
return false;
}
}
/* All OK */
return true;
}
/**
* Save file to disk, return FALSE if errors
*/
bool File_Save(const char *pszFileName, const Uint8 *pAddress, size_t Size, bool bQueryOverwrite)
{
bool bRet = false;
/* Check if need to ask user if to overwrite */
if (bQueryOverwrite)
{
/* If file exists, ask if OK to overwrite */
if (!File_QueryOverwrite(pszFileName))
return false;
}
#if HAVE_LIBZ
/* Normal file or gzipped file? */
if (File_DoesFileExtensionMatch(pszFileName, ".gz"))
{
gzFile hGzFile;
/* Create a gzipped file: */
hGzFile = gzopen(pszFileName, "wb");
if (hGzFile != NULL)
{
/* Write data, set success flag */
if (gzwrite(hGzFile, pAddress, Size) == (int)Size)
bRet = true;
gzclose(hGzFile);
}
}
else
#endif /* HAVE_LIBZ */
{
FILE *hDiskFile;
/* Create a normal file: */
hDiskFile = fopen(pszFileName, "wb");
if (hDiskFile != NULL)
{
/* Write data, set success flag */
if (fwrite(pAddress, 1, Size, hDiskFile) == Size)
bRet = true;
fclose(hDiskFile);
}
}
return bRet;
}