61 lines
2.0 KiB
C#
61 lines
2.0 KiB
C#
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using System;
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using System.IO;
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using System.Linq;
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using MediaBrowser.Model.IO;
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using MediaBrowser.Model.Serialization;
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namespace Emby.Common.Implementations.Configuration
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{
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/// <summary>
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/// Class ConfigurationHelper
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/// </summary>
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public static class ConfigurationHelper
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{
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/// <summary>
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/// Reads an xml configuration file from the file system
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/// It will immediately re-serialize and save if new serialization data is available due to property changes
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/// </summary>
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/// <param name="type">The type.</param>
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/// <param name="path">The path.</param>
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/// <param name="xmlSerializer">The XML serializer.</param>
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/// <returns>System.Object.</returns>
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public static object GetXmlConfiguration(Type type, string path, IXmlSerializer xmlSerializer, IFileSystem fileSystem)
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{
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object configuration;
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byte[] buffer = null;
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// Use try/catch to avoid the extra file system lookup using File.Exists
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try
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{
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buffer = fileSystem.ReadAllBytes(path);
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configuration = xmlSerializer.DeserializeFromBytes(type, buffer);
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}
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catch (Exception)
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{
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configuration = Activator.CreateInstance(type);
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}
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using (var stream = new MemoryStream())
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{
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xmlSerializer.SerializeToStream(configuration, stream);
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// Take the object we just got and serialize it back to bytes
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var newBytes = stream.ToArray();
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// If the file didn't exist before, or if something has changed, re-save
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if (buffer == null || !buffer.SequenceEqual(newBytes))
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{
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fileSystem.CreateDirectory(Path.GetDirectoryName(path));
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// Save it after load in case we got new items
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fileSystem.WriteAllBytes(path, newBytes);
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}
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return configuration;
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}
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}
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}
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}
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