Update Cryville.Common.

Assets/Cryville/Common/IOExtensions.cs

@@ -1,22 +1,42 @@
-using System;
 using System.IO;
 using System.Text;
 
 namespace Cryville.Common {
+	/// <summary>
+	/// Provides a set of <see langword="static" /> methods related to file system and IO.
+	/// </summary>
 	public static class IOExtensions {
+		/// <summary>
+		/// Gets a subdirectory of a directory. The subdirectory is created if it does not exist.
+		/// </summary>
+		/// <param name="dir">The parent directory.</param>
+		/// <param name="name">The name of the subdirectory.</param>
+		/// <returns></returns>
 		public static DirectoryInfo GetSubdirectory(this DirectoryInfo dir, string name) {
 			var l1 = dir.GetDirectories(name);
 			if (l1.Length == 0) return dir.CreateSubdirectory(name);
 			else return l1[0];
 		}
-		
+
+		/// <summary>
+		/// Reads a string length-prefixed with a <see cref="System.UInt16" />.
+		/// </summary>
+		/// <param name="reader">The binary reader.</param>
+		/// <param name="encoding">The encoding of the string.</param>
+		/// <returns>The string read from the reader.</returns>
 		public static string ReadUInt16String(this BinaryReader reader, Encoding encoding = null) {
 			if (encoding == null) encoding = Encoding.UTF8;
 			var len = reader.ReadUInt16();
 			byte[] buffer = reader.ReadBytes(len);
 			return encoding.GetString(buffer);
 		}
-		
+
+		/// <summary>
+		/// Writes a string length-prefixed with a <see cref="System.UInt16" />.
+		/// </summary>
+		/// <param name="writer">The binary writer.</param>
+		/// <param name="value">The string to write by the writer.</param>
+		/// <param name="encoding">The encoding of the string.</param>
 		public static void WriteUInt16String(this BinaryWriter writer, string value, Encoding encoding = null) {
 			if (encoding == null) encoding = Encoding.UTF8;
 			byte[] buffer = encoding.GetBytes(value);