From 9ed0a8dbad121b64ca8baca78f28ca58602c47ca Mon Sep 17 00:00:00 2001
From: MW
Date: Wed, 25 Apr 2007 18:12:06 +0000
Subject: updated to use lastest version of libsl but is currently broke when
 using SL viewer 1.15.02, due to big changes in the message templates.

---
 OpenSim.Framework/Util.cs | 89 +++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 89 insertions(+)

(limited to 'OpenSim.Framework/Util.cs')

diff --git a/OpenSim.Framework/Util.cs b/OpenSim.Framework/Util.cs
index 695cac9..17ca611 100644
--- a/OpenSim.Framework/Util.cs
+++ b/OpenSim.Framework/Util.cs
@@ -36,6 +36,95 @@ namespace OpenSim.Framework.Utilities
             return id;
         }
 
+        public static int fast_distance2d(int x, int y)
+        {
+            x = System.Math.Abs(x);
+            y = System.Math.Abs(y);
+
+            int min = System.Math.Min(x, y);
+
+            return (x + y - (min >> 1) - (min >> 2) + (min >> 4));
+        }
+
+        public static string FieldToString(byte[] bytes)
+        {
+            return FieldToString(bytes, String.Empty);
+        }
+
+        /// <summary>
+        /// Convert a variable length field (byte array) to a string, with a
+        /// field name prepended to each line of the output
+        /// </summary>
+        /// <remarks>If the byte array has unprintable characters in it, a 
+        /// hex dump will be put in the string instead</remarks>
+        /// <param name="bytes">The byte array to convert to a string</param>
+        /// <param name="fieldName">A field name to prepend to each line of output</param>
+        /// <returns>An ASCII string or a string containing a hex dump, minus 
+        /// the null terminator</returns>
+        public static string FieldToString(byte[] bytes, string fieldName)
+        {
+            // Check for a common case
+            if (bytes.Length == 0) return String.Empty;
+
+            StringBuilder output = new StringBuilder();
+            bool printable = true;
+
+            for (int i = 0; i < bytes.Length; ++i)
+            {
+                // Check if there are any unprintable characters in the array
+                if ((bytes[i] < 0x20 || bytes[i] > 0x7E) && bytes[i] != 0x09
+                    && bytes[i] != 0x0D && bytes[i] != 0x0A && bytes[i] != 0x00)
+                {
+                    printable = false;
+                    break;
+                }
+            }
+
+            if (printable)
+            {
+                if (fieldName.Length > 0)
+                {
+                    output.Append(fieldName);
+                    output.Append(": ");
+                }
+
+                if (bytes[bytes.Length - 1] == 0x00)
+                    output.Append(UTF8Encoding.UTF8.GetString(bytes, 0, bytes.Length - 1));
+                else
+                    output.Append(UTF8Encoding.UTF8.GetString(bytes));
+            }
+            else
+            {
+                for (int i = 0; i < bytes.Length; i += 16)
+                {
+                    if (i != 0)
+                        output.Append(Environment.NewLine);
+                    if (fieldName.Length > 0)
+                    {
+                        output.Append(fieldName);
+                        output.Append(": ");
+                    }
+
+                    for (int j = 0; j < 16; j++)
+                    {
+                        if ((i + j) < bytes.Length)
+                            output.Append(String.Format("{0:X2} ", bytes[i + j]));
+                        else
+                            output.Append("   ");
+                    }
+
+                    for (int j = 0; j < 16 && (i + j) < bytes.Length; j++)
+                    {
+                        if (bytes[i + j] >= 0x20 && bytes[i + j] < 0x7E)
+                            output.Append((char)bytes[i + j]);
+                        else
+                            output.Append(".");
+                    }
+                }
+            }
+
+            return output.ToString();
+        }
         public Util()
         {
 
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