From 9edba5582eefda28106c901f4b6fbede5d6c8e94 Mon Sep 17 00:00:00 2001
From: UbitUmarov <ajlduarte@sapo.pt>
Date: Tue, 31 Jan 2023 16:58:09 +0000
Subject: [PATCH] mantis 9056: add llReplaceSubString()

---
 .../Shared/Api/Implementation/LSL_Api.cs      | 36 +++++++++++++++++++
 .../Shared/Api/Interface/ILSL_Api.cs          |  2 ++
 .../Shared/Api/Runtime/LSL_Stub.cs            |  5 +++
 3 files changed, 43 insertions(+)

diff --git a/OpenSim/Region/ScriptEngine/Shared/Api/Implementation/LSL_Api.cs b/OpenSim/Region/ScriptEngine/Shared/Api/Implementation/LSL_Api.cs
index 7ee9d77e4a..eda1cf0bf0 100644
--- a/OpenSim/Region/ScriptEngine/Shared/Api/Implementation/LSL_Api.cs
+++ b/OpenSim/Region/ScriptEngine/Shared/Api/Implementation/LSL_Api.cs
@@ -18700,6 +18700,42 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api
             }
             return hash;
         }
+
+        public LSL_String llReplaceSubString(LSL_String src, LSL_String pattern, LSL_String replacement, int count)
+        {
+            RegexOptions RegexOptions;
+            if (count < 0)
+            {
+                RegexOptions = RegexOptions.CultureInvariant | RegexOptions.RightToLeft;
+                count = -count;
+            }
+            else
+            {
+                RegexOptions = RegexOptions.CultureInvariant;
+                if (count == 0)
+                    count = -1;
+            }
+
+
+            try
+            {
+                if (string.IsNullOrEmpty(src.m_string))
+                    return src;
+
+                if (string.IsNullOrEmpty(pattern.m_string))
+                    return src;
+
+                Regex rx = new Regex(pattern, RegexOptions, new TimeSpan(500000)); // 50ms)
+                if (replacement == null)
+                    return rx.Replace(src.m_string, string.Empty, count);
+
+                return rx.Replace(src.m_string, replacement.m_string, count);
+            }
+            catch
+            {
+                return src;
+            }
+        }
     }
 
     public class NotecardCache
diff --git a/OpenSim/Region/ScriptEngine/Shared/Api/Interface/ILSL_Api.cs b/OpenSim/Region/ScriptEngine/Shared/Api/Interface/ILSL_Api.cs
index c188c11391..16850de035 100644
--- a/OpenSim/Region/ScriptEngine/Shared/Api/Interface/ILSL_Api.cs
+++ b/OpenSim/Region/ScriptEngine/Shared/Api/Interface/ILSL_Api.cs
@@ -486,5 +486,7 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api.Interfaces
          LSL_String llChar(LSL_Integer unicode);
         LSL_Integer llOrd(LSL_String s, LSL_Integer index);
         LSL_Integer llHash(LSL_String s);
+
+         LSL_String llReplaceSubString(LSL_String src, LSL_String pattern, LSL_String replacement, int count);
     }
 }
diff --git a/OpenSim/Region/ScriptEngine/Shared/Api/Runtime/LSL_Stub.cs b/OpenSim/Region/ScriptEngine/Shared/Api/Runtime/LSL_Stub.cs
index 08c30e7299..7e35c4927d 100644
--- a/OpenSim/Region/ScriptEngine/Shared/Api/Runtime/LSL_Stub.cs
+++ b/OpenSim/Region/ScriptEngine/Shared/Api/Runtime/LSL_Stub.cs
@@ -2212,5 +2212,10 @@ namespace OpenSim.Region.ScriptEngine.Shared.ScriptBase
         {
             return m_LSL_Functions.llHash(s);
         }
+
+        public LSL_String llReplaceSubString(LSL_String src, LSL_String pattern, LSL_String replacement, int count)
+        {
+            return m_LSL_Functions.llReplaceSubString(src, pattern, replacement, count);
+        }
     }
 }