From 2ca4b7d03adfa3cc7c9c6a597a11762142d5b34b Mon Sep 17 00:00:00 2001
From: LukePulverenti <luke.pulverenti@gmail.com>
Date: Mon, 4 Mar 2013 00:43:06 -0500
Subject: Created IConfigurationManager

---
 .../Configuration/ConfigurationHelper.cs           | 68 ++++++++++++++++++++++
 1 file changed, 68 insertions(+)
 create mode 100644 MediaBrowser.Common/Configuration/ConfigurationHelper.cs

(limited to 'MediaBrowser.Common/Configuration/ConfigurationHelper.cs')

diff --git a/MediaBrowser.Common/Configuration/ConfigurationHelper.cs b/MediaBrowser.Common/Configuration/ConfigurationHelper.cs
new file mode 100644
index 000000000..fc74a6a4d
--- /dev/null
+++ b/MediaBrowser.Common/Configuration/ConfigurationHelper.cs
@@ -0,0 +1,68 @@
+using MediaBrowser.Model.Serialization;
+using System;
+using System.IO;
+using System.Linq;
+
+namespace MediaBrowser.Common.Configuration
+{
+    /// <summary>
+    /// Class ConfigurationHelper
+    /// </summary>
+    public static class ConfigurationHelper
+    {
+        /// <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 (FileNotFoundException)
+            {
+                configuration = Activator.CreateInstance(type);
+            }
+
+            // Take the object we just got and serialize it back to bytes
+            var newBytes = xmlSerializer.SerializeToBytes(configuration);
+
+            // If the file didn't exist before, or if something has changed, re-save
+            if (buffer == null || !buffer.SequenceEqual(newBytes))
+            {
+                // Save it after load in case we got new items
+                File.WriteAllBytes(path, newBytes);
+            }
+
+            return configuration;
+        }
+
+
+        /// <summary>
+        /// Reads an xml configuration file from the file system
+        /// It will immediately save the configuration after loading it, just
+        /// in case there are new serializable properties
+        /// </summary>
+        /// <typeparam name="T"></typeparam>
+        /// <param name="path">The path.</param>
+        /// <param name="xmlSerializer">The XML serializer.</param>
+        /// <returns>``0.</returns>
+        public static T GetXmlConfiguration<T>(string path, IXmlSerializer xmlSerializer)
+            where T : class
+        {
+            return GetXmlConfiguration(typeof(T), path, xmlSerializer) as T;
+        }
+    }
+}
-- 
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