/// <summary>
/// This routine is heavily customized to decompress GRAMPS whole of database export file
/// (i.e. .gramps) files.
/// </summary>
/// <param name="inputFile">
/// Input GRAMPS export file.
/// </param>
/// <returns>
/// Flag indicating success or not.
/// </returns>
public bool DecompressGZIP(IFileInfoEx inputFile)
{
App.Current.Services.GetService <IErrorNotifications>().DataLogEntryAdd("Decompressing GRAMPS GZIP file");
// Check arguments
if (inputFile == null)
{
App.Current.Services.GetService <IErrorNotifications>().NotifyError(new ErrorInfo("The input file is null"));
return(false);
}
try
{
ExtractGZip(inputFile, "data.xml");
App.Current.Services.GetService <IErrorNotifications>().DataLogEntryReplace("GRAMPS GZIP file decompress complete");
return(true);
}
catch (UnauthorizedAccessException ex)
{
ErrorInfo t = new ErrorInfo("Unauthorised Access exception when trying to acess file")
{
{ "Exception Message ", ex.Message },
};
App.Current.Services.GetService <IErrorNotifications>().NotifyError(t);
return(false);
}
}
/// <summary>
/// Extracts the gzip file.
/// </summary>
/// <param name="argInputFile">
/// The input file.
/// </param>
/// <returns>
/// </returns>
public static bool ExtractGZip(IFileInfoEx argInputFile, string argOutFile)
{
if (argInputFile is null)
{
throw new ArgumentNullException(nameof(argInputFile));
}
FileStream originalFileStream = argInputFile.FInfo.OpenRead();
byte[] dataBuffer = new byte[4096];
GZipStream gzipStream = new GZipStream(originalFileStream, CompressionMode.Decompress);
FileInfo fsOut = new FileInfo(Path.Combine(DataStore.Instance.AD.CurrentDataFolder.Path, argOutFile));
FileStream fsOut1 = fsOut.Create();
StreamUtils.Copy(gzipStream, fsOut1, dataBuffer);
fsOut1.Flush();
fsOut1.Dispose();
gzipStream.Dispose();
return(true);
}
/// <summary>
/// Saves the datetime the file was last modified in System Settings.
/// </summary>
public static void SaveLastWriteToSettings(IFileInfoEx argFileInfoEx, string argSettingsKey)
{
Contract.Assert(argFileInfoEx != null);
Contract.Assert(argSettingsKey != string.Empty);
DataStore.Instance.ES.PreferencesSet(argSettingsKey, argFileInfoEx.FInfo.LastWriteTimeUtc.ToString(System.Globalization.CultureInfo.CurrentCulture));
}
/// <summary>
/// Was the file modified since the last datetime saved?
/// </summary>
/// <returns>
/// True if the file was modified since last time.
/// </returns>
public static bool ModifiedComparedToSettings(IFileInfoEx argFileInfoEx, string argSettingsKey)
{
Contract.Assert(argFileInfoEx != null);
Contract.Assert(argSettingsKey != string.Empty);
// Check for file exists
if (!argFileInfoEx.Valid)
{
return(false);
}
try
{
DateTime fileDateTime = argFileInfoEx.FileGetDateTimeModified();
// Need to reparse it so the ticks are the same
fileDateTime = DateTime.Parse(fileDateTime.ToString(System.Globalization.CultureInfo.CurrentCulture), System.Globalization.CultureInfo.CurrentCulture);
// Save a fresh copy if null so we can load next time
string oldDateTime = DataStore.Instance.ES.PreferencesGet(argSettingsKey, string.Empty);
if (string.IsNullOrEmpty(oldDateTime))
{
DataStore.Instance.ES.PreferencesSet(argSettingsKey, fileDateTime.ToString(System.Globalization.CultureInfo.CurrentCulture));
// No previous settings entry so do the load (it might be the FirstRun)
return(true);
}
else
{
DateTime settingsStoredDateTime;
settingsStoredDateTime = DateTime.Parse(oldDateTime, System.Globalization.CultureInfo.CurrentCulture);
int t = fileDateTime.CompareTo(settingsStoredDateTime);
if (t > 0)
{
return(true);
}
return(false);
}
}
catch (Exception ex)
{
DataStore.Instance.ES.PreferencesRemove(argSettingsKey);
App.Current.Services.GetService <IErrorNotifications>().NotifyException("FileModifiedSinceLastSaveAsync", ex);
throw;
}
}
