Where possible, use the system Encoding.ASCII and Encoding.UTF8 rather than constructing fresh copies.

The encodings are thread-safe and already used in such a manner in other places.
This isn't done where Byte Order Mark output is suppressed, since Encoding.UTF8 is constructed to output the BOM.

6 files changed, 19 insertions, 27 deletions

diff --git a/OpenSim/Framework/Serialization/External/LandDataSerializer.cs b/OpenSim/Framework/Serialization/External/LandDataSerializer.cs
index e8d82d3..a64f01c 100644
--- a/OpenSim/Framework/Serialization/External/LandDataSerializer.cs
+++ b/OpenSim/Framework/Serialization/External/LandDataSerializer.cs
@@ -44,8 +44,6 @@ namespace OpenSim.Framework.Serialization.External
     {
 //        private static readonly ILog m_log = LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);
 
-        protected static UTF8Encoding m_utf8Encoding = new UTF8Encoding();
-
         private static Dictionary<string, Action<LandData, XmlTextReader>> m_ldProcessors
             = new Dictionary<string, Action<LandData, XmlTextReader>>();
 
@@ -163,7 +161,7 @@ namespace OpenSim.Framework.Serialization.External
         /// <exception cref="System.Xml.XmlException"></exception>
         public static LandData Deserialize(byte[] serializedLandData)
         {
-            return Deserialize(m_utf8Encoding.GetString(serializedLandData, 0, serializedLandData.Length));
+            return Deserialize(Encoding.UTF8.GetString(serializedLandData, 0, serializedLandData.Length));
         }
 
         /// <summary>
diff --git a/OpenSim/Framework/Serialization/External/RegionSettingsSerializer.cs b/OpenSim/Framework/Serialization/External/RegionSettingsSerializer.cs
index f18435d..19468c3 100644
--- a/OpenSim/Framework/Serialization/External/RegionSettingsSerializer.cs
+++ b/OpenSim/Framework/Serialization/External/RegionSettingsSerializer.cs
@@ -40,8 +40,6 @@ namespace OpenSim.Framework.Serialization.External
     /// </summary>
     public class RegionSettingsSerializer
     {
-        protected static ASCIIEncoding m_asciiEncoding = new ASCIIEncoding();
-        
         /// <summary>
         /// Deserialize settings
         /// </summary>
@@ -50,7 +48,7 @@ namespace OpenSim.Framework.Serialization.External
         /// <exception cref="System.Xml.XmlException"></exception>
         public static RegionSettings Deserialize(byte[] serializedSettings)
         {
-            return Deserialize(m_asciiEncoding.GetString(serializedSettings, 0, serializedSettings.Length));
+            return Deserialize(Encoding.ASCII.GetString(serializedSettings, 0, serializedSettings.Length));
         }
         
         /// <summary>
diff --git a/OpenSim/Framework/Serialization/TarArchiveReader.cs b/OpenSim/Framework/Serialization/TarArchiveReader.cs
index 77c29f8..339a37a 100644
--- a/OpenSim/Framework/Serialization/TarArchiveReader.cs
+++ b/OpenSim/Framework/Serialization/TarArchiveReader.cs
@@ -53,8 +53,6 @@ namespace OpenSim.Framework.Serialization
             TYPE_CONTIGUOUS_FILE = 8,
         }
 
-        protected static ASCIIEncoding m_asciiEncoding = new ASCIIEncoding();
-
         /// <summary>
         /// Binary reader for the underlying stream
         /// </summary>
@@ -120,13 +118,13 @@ namespace OpenSim.Framework.Serialization
             if (header[156] == (byte)'L')
             {
                 int longNameLength = ConvertOctalBytesToDecimal(header, 124, 11);
-                tarHeader.FilePath = m_asciiEncoding.GetString(ReadData(longNameLength));
+                tarHeader.FilePath = Encoding.ASCII.GetString(ReadData(longNameLength));
                 //m_log.DebugFormat("[TAR ARCHIVE READER]: Got long file name {0}", tarHeader.FilePath);
                 header = m_br.ReadBytes(512);
             }
             else
             {
-                tarHeader.FilePath = m_asciiEncoding.GetString(header, 0, 100);
+                tarHeader.FilePath = Encoding.ASCII.GetString(header, 0, 100);
                 tarHeader.FilePath = tarHeader.FilePath.Trim(m_nullCharArray);
                 //m_log.DebugFormat("[TAR ARCHIVE READER]: Got short file name {0}", tarHeader.FilePath);
             }
@@ -205,7 +203,7 @@ namespace OpenSim.Framework.Serialization
         {
             // Trim leading white space: ancient tars do that instead
             // of leading 0s :-( don't ask. really.
-            string oString = m_asciiEncoding.GetString(bytes, startIndex, count).TrimStart(m_spaceCharArray);
+            string oString = Encoding.ASCII.GetString(bytes, startIndex, count).TrimStart(m_spaceCharArray);
 
             int d = 0;
 
diff --git a/OpenSim/Framework/Serialization/TarArchiveWriter.cs b/OpenSim/Framework/Serialization/TarArchiveWriter.cs
index fca909f..122fa8e 100644
--- a/OpenSim/Framework/Serialization/TarArchiveWriter.cs
+++ b/OpenSim/Framework/Serialization/TarArchiveWriter.cs
@@ -41,7 +41,6 @@ namespace OpenSim.Framework.Serialization
     {
 //        private static readonly ILog m_log = LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);
 
-        protected static ASCIIEncoding m_asciiEncoding = new ASCIIEncoding();
         protected static UTF8Encoding m_utf8Encoding = new UTF8Encoding();
 
         /// <summary>
@@ -85,7 +84,7 @@ namespace OpenSim.Framework.Serialization
         public void WriteFile(string filePath, byte[] data)
         {
             if (filePath.Length > 100)
-                WriteEntry("././@LongLink", m_asciiEncoding.GetBytes(filePath), 'L');
+                WriteEntry("././@LongLink", Encoding.ASCII.GetBytes(filePath), 'L');
 
             char fileType;
 
@@ -137,7 +136,7 @@ namespace OpenSim.Framework.Serialization
                 oString = "0" + oString;
             }
 
-            byte[] oBytes = m_asciiEncoding.GetBytes(oString);
+            byte[] oBytes = Encoding.ASCII.GetBytes(oString);
 
             return oBytes;
         }
@@ -156,20 +155,20 @@ namespace OpenSim.Framework.Serialization
             byte[] header = new byte[512];
 
             // file path field (100)
-            byte[] nameBytes = m_asciiEncoding.GetBytes(filePath);
+            byte[] nameBytes = Encoding.ASCII.GetBytes(filePath);
             int nameSize = (nameBytes.Length >= 100) ? 100 : nameBytes.Length;
             Array.Copy(nameBytes, header, nameSize);
 
             // file mode (8)
-            byte[] modeBytes = m_asciiEncoding.GetBytes("0000777");
+            byte[] modeBytes = Encoding.ASCII.GetBytes("0000777");
             Array.Copy(modeBytes, 0, header, 100, 7);
 
             // owner user id (8)
-            byte[] ownerIdBytes = m_asciiEncoding.GetBytes("0000764");
+            byte[] ownerIdBytes = Encoding.ASCII.GetBytes("0000764");
             Array.Copy(ownerIdBytes, 0, header, 108, 7);
 
             // group user id (8)
-            byte[] groupIdBytes = m_asciiEncoding.GetBytes("0000764");
+            byte[] groupIdBytes = Encoding.ASCII.GetBytes("0000764");
             Array.Copy(groupIdBytes, 0, header, 116, 7);
 
             // file size in bytes (12)
@@ -181,17 +180,17 @@ namespace OpenSim.Framework.Serialization
             Array.Copy(fileSizeBytes, 0, header, 124, 11);
 
             // last modification time (12)
-            byte[] lastModTimeBytes = m_asciiEncoding.GetBytes("11017037332");
+            byte[] lastModTimeBytes = Encoding.ASCII.GetBytes("11017037332");
             Array.Copy(lastModTimeBytes, 0, header, 136, 11);
 
             // entry type indicator (1)
-            header[156] = m_asciiEncoding.GetBytes(new char[] { fileType })[0];
+            header[156] = Encoding.ASCII.GetBytes(new char[] { fileType })[0];
 
-            Array.Copy(m_asciiEncoding.GetBytes("0000000"), 0, header, 329, 7);
-            Array.Copy(m_asciiEncoding.GetBytes("0000000"), 0, header, 337, 7);
+            Array.Copy(Encoding.ASCII.GetBytes("0000000"), 0, header, 329, 7);
+            Array.Copy(Encoding.ASCII.GetBytes("0000000"), 0, header, 337, 7);
 
             // check sum for header block (8) [calculated last]
-            Array.Copy(m_asciiEncoding.GetBytes("        "), 0, header, 148, 8);
+            Array.Copy(Encoding.ASCII.GetBytes("        "), 0, header, 148, 8);
 
             int checksum = 0;
             foreach (byte b in header)
diff --git a/OpenSim/Framework/Servers/BaseOpenSimServer.cs b/OpenSim/Framework/Servers/BaseOpenSimServer.cs
index 9459f76..14d8b0c 100644
--- a/OpenSim/Framework/Servers/BaseOpenSimServer.cs
+++ b/OpenSim/Framework/Servers/BaseOpenSimServer.cs
@@ -591,8 +591,8 @@ namespace OpenSim.Framework.Servers
             {
                 string pidstring = System.Diagnostics.Process.GetCurrentProcess().Id.ToString();
                 FileStream fs = File.Create(path);
-                System.Text.ASCIIEncoding enc = new System.Text.ASCIIEncoding();
-                Byte[] buf = enc.GetBytes(pidstring);
+
+                Byte[] buf = Encoding.ASCII.GetBytes(pidstring);
                 fs.Write(buf, 0, buf.Length);
                 fs.Close();
                 m_pidFile = path;
diff --git a/OpenSim/Framework/Util.cs b/OpenSim/Framework/Util.cs
index e03bb74..fd9586c 100644
--- a/OpenSim/Framework/Util.cs
+++ b/OpenSim/Framework/Util.cs
@@ -1236,8 +1236,7 @@ namespace OpenSim.Framework
 
         public static string Base64ToString(string str)
         {
-            UTF8Encoding encoder = new UTF8Encoding();
-            Decoder utf8Decode = encoder.GetDecoder();
+            Decoder utf8Decode = Encoding.UTF8.GetDecoder();
 
             byte[] todecode_byte = Convert.FromBase64String(str);
             int charCount = utf8Decode.GetCharCount(todecode_byte, 0, todecode_byte.Length);