/// <summary>
/// Loads the block from a file of virtual file system.
/// </summary>
/// <param name="path">The virtual file path.</param>
/// <param name="errorString">The information on an error.</param>
/// <returns><see cref="NeoAxis.DataBlock"/> if the block has been loaded; otherwise, <b>null</b>.</returns>
public static DataBlock LoadFromVirtualFile(string path, out string errorString)
{
errorString = null;
if (!VirtualFile.Exists(path))
{
errorString = string.Format("File not found \"{0}\".", path);
return(null);
}
try
{
byte[] data = VirtualFile.ReadAllBytes(path);
string error;
DataBlock dataBlock = DataBlock.Parse(data, false, out error);
if (dataBlock == null)
{
errorString = string.Format("Parsing data block failed \"{0}\" ({1}).",
path, error);
}
return(dataBlock);
}
catch (Exception)
{
errorString = string.Format("Reading file failed \"{0}\".", path);
return(null);
}
}
/// <summary>
/// Loads the block from a file of virtual file system.
/// </summary>
/// <param name="path">The virtual file path.</param>
/// <param name="errorString">The information on an error.</param>
/// <param name="fileNotFound"><b>true</b> if file not found.</param>
/// <returns><see cref="NeoAxis.TextBlock"/> if the block has been loaded; otherwise, <b>null</b>.</returns>
public static TextBlock LoadFromVirtualFile(string path, out string errorString, out bool fileNotFound)
{
errorString = null;
fileNotFound = false;
//!!!!имя файла в ошибке снаружи метода
try
{
var bytes = VirtualFile.ReadAllBytes(path);
var stream = new MemoryVirtualFileStream(bytes);
//using( Stream stream = VirtualFile.Open( path ) )
//{
using (StreamReader streamReader = new StreamReader(stream))
{
string error;
TextBlock textBlock = TextBlock.Parse(streamReader.ReadToEnd(), out error);
if (textBlock == null)
{
errorString = $"Unable to load file \'{path}\'. " + error;
return(null);
}
return(textBlock);
}
//}
}
catch (FileNotFoundException)
{
errorString = $"Unable to load file \'{path}\'. File not found.";
fileNotFound = true;
return(null);
}
catch (Exception e)
{
errorString = $"Unable to load file \'{path}\'. " + e.Message;
return(null);
}
}
static bool GetInfoFromSourceFile(string sourceFileName, out string hash, out int sourceFileSize)
{
try
{
var data = VirtualFile.ReadAllBytes(sourceFileName);
//!!!!optimization: faster method maybe
//!!!!optimization: может один раз создавать для всего?
using (var sha = new SHA256Managed())
{
byte[] checksum = sha.ComputeHash(data);
hash = BitConverter.ToString(checksum).Replace("-", string.Empty);
}
sourceFileSize = (int)VirtualFile.GetLength(sourceFileName);
return(true);
}
catch
{
hash = "";
sourceFileSize = 0;
return(false);
}
}
