/// <summary>
/// Reads an xml configuration file from the file system
/// It will immediately re-serialize and save if new serialization data is available due to property changes.
/// </summary>
/// <param name="type">The type.</param>
/// <param name="path">The path.</param>
/// <param name="xmlSerializer">The XML serializer.</param>
/// <returns>System.Object.</returns>
public static object GetXmlConfiguration(Type type, string path, IXmlSerializer xmlSerializer)
{
object configuration;
byte[] buffer = null;
// Use try/catch to avoid the extra file system lookup using File.Exists
try
{
buffer = File.ReadAllBytes(path);
configuration = xmlSerializer.DeserializeFromBytes(type, buffer);
}
catch (Exception)
{
configuration = Activator.CreateInstance(type);
}
using var stream = new MemoryStream();
xmlSerializer.SerializeToStream(configuration, stream);
// Take the object we just got and serialize it back to bytes
var newBytes = stream.ToArray();
// If the file didn't exist before, or if something has changed, re-save
if (buffer == null || !buffer.SequenceEqual(newBytes))
{
Directory.CreateDirectory(Path.GetDirectoryName(path));
// Save it after load in case we got new items
File.WriteAllBytes(path, newBytes);
}
return(configuration);
}
private string Serialize <T>(T data)
{
using (MemoryStream stream = new MemoryStream())
{
_serializer.SerializeToStream(data, stream);
stream.Seek(0, SeekOrigin.Begin);
return(new StreamReader(stream).ReadToEnd());
}
}
/// <summary>
/// Reads an xml configuration file from the file system
/// It will immediately re-serialize and save if new serialization data is available due to property changes.
/// </summary>
/// <param name="type">The type.</param>
/// <param name="path">The path.</param>
/// <param name="xmlSerializer">The XML serializer.</param>
/// <returns>System.Object.</returns>
public static object GetXmlConfiguration(Type type, string path, IXmlSerializer xmlSerializer)
{
object configuration;
byte[]? buffer = null;
// Use try/catch to avoid the extra file system lookup using File.Exists
try
{
buffer = File.ReadAllBytes(path);
configuration = xmlSerializer.DeserializeFromBytes(type, buffer);
}
catch (Exception)
{
// Note: CreateInstance returns null for Nullable<T>, e.g. CreateInstance(typeof(int?)) returns null.
configuration = Activator.CreateInstance(type) !;
}
using var stream = new MemoryStream(buffer?.Length ?? 0);
xmlSerializer.SerializeToStream(configuration, stream);
// Take the object we just got and serialize it back to bytes
byte[] newBytes = stream.GetBuffer();
int newBytesLen = (int)stream.Length;
// If the file didn't exist before, or if something has changed, re-save
if (buffer == null || !newBytes.AsSpan(0, newBytesLen).SequenceEqual(buffer))
{
var directory = Path.GetDirectoryName(path) ?? throw new ArgumentException($"Provided path ({path}) is not valid.", nameof(path));
Directory.CreateDirectory(directory);
// Save it after load in case we got new items
// use FileShare.None as this bypasses dotnet bug dotnet/runtime#42790 .
using (var fs = new FileStream(path, FileMode.Create, FileAccess.Write, FileShare.None))
{
fs.Write(newBytes, 0, newBytesLen);
}
}
return(configuration);
}
public static object GetXmlConfiguration(Type type, string path, IXmlSerializer xmlSerializer)
{
object configuration;
byte[]? buffer = null;
// Use try/catch to avoid the extra file system lookup using File.Exists
try
{
buffer = File.ReadAllBytes(path);
configuration = xmlSerializer.DeserializeFromBytes(type, buffer);
}
catch (Exception)
{
configuration = Activator.CreateInstance(type);
}
using var stream = new MemoryStream(buffer?.Length ?? 0);
xmlSerializer.SerializeToStream(configuration, stream);
// Take the object we just got and serialize it back to bytes
byte[] newBytes = stream.GetBuffer();
int newBytesLen = (int)stream.Length;
// If the file didn't exist before, or if something has changed, re-save
if (buffer == null || !newBytes.AsSpan(0, newBytesLen).SequenceEqual(buffer))
{
Directory.CreateDirectory(Path.GetDirectoryName(path));
// Save it after load in case we got new items
using (var fs = new FileStream(path, FileMode.Create, FileAccess.Write, FileShare.Read))
{
fs.Write(newBytes, 0, newBytesLen);
}
}
return(configuration);
}
/// <summary>
/// Reads an xml configuration file from the file system
/// It will immediately re-serialize and save if new serialization data is available due to property changes
/// </summary>
/// <param name="type">The type.</param>
/// <param name="path">The path.</param>
/// <param name="xmlSerializer">The XML serializer.</param>
/// <returns>System.Object.</returns>
public static object GetXmlConfiguration(Type type, string path, IXmlSerializer xmlSerializer)
{
object configuration;
byte[] buffer = null;
// Use try/catch to avoid the extra file system lookup using File.Exists
try
{
buffer = File.ReadAllBytes(path);
configuration = xmlSerializer.DeserializeFromBytes(type, buffer);
}
catch (Exception)
{
configuration = Activator.CreateInstance(type);
}
using (var stream = new MemoryStream())
{
xmlSerializer.SerializeToStream(configuration, stream);
// Take the object we just got and serialize it back to bytes
var newBytes = stream.ToArray();
// If the file didn't exist before, or if something has changed, re-save
if (buffer == null || !buffer.SequenceEqual(newBytes))
{
Directory.CreateDirectory(Path.GetDirectoryName(path));
// Save it after load in case we got new items
File.WriteAllBytes(path, newBytes);
}
return configuration;
}
}
public void SerializeToXml(object o, Stream stream)
{
_xmlSerializer.SerializeToStream(o, stream);
}