From 3a760ad12bbb8fa3e48dde533744a1f2dd1c7871 Mon Sep 17 00:00:00 2001
From: Melanie
Date: Fri, 17 Sep 2010 22:20:20 +0100
Subject: Overwrite the core version of the string parsing method with ours

---
 .../Shared/Api/Implementation/LSL_Api.cs           | 97 +++++++++-------------
 1 file changed, 37 insertions(+), 60 deletions(-)

(limited to 'OpenSim')

diff --git a/OpenSim/Region/ScriptEngine/Shared/Api/Implementation/LSL_Api.cs b/OpenSim/Region/ScriptEngine/Shared/Api/Implementation/LSL_Api.cs
index cd8353f..caa39ba 100644
--- a/OpenSim/Region/ScriptEngine/Shared/Api/Implementation/LSL_Api.cs
+++ b/OpenSim/Region/ScriptEngine/Shared/Api/Implementation/LSL_Api.cs
@@ -5949,6 +5949,11 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api
             ScriptSleep(5000);
         }
 
+        public LSL_List llParseString2List(string str, LSL_List separators, LSL_List in_spacers)
+        {
+            return ParseString2List(str, separators, in_spacers, false);
+        }
+
         public LSL_Integer llOverMyLand(string id)
         {
             m_host.AddScriptLPS(1);
@@ -8931,7 +8936,7 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api
         //  garbage generation.
         //  </remarks>
 
-        private LSL_List ParseString(string src, LSL_List separators, LSL_List spacers, bool keepNulls)
+        public LSL_List llParseStringKeepNulls(string src, LSL_List separators, LSL_List spacers)
         {
             return ParseString2List(src, separators, spacers, true);
         }
@@ -8952,19 +8957,19 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api
             int          i, j;
             string       d;
 
-            //    All entries are initially valid
-
-            for (int i = 0; i < mlen; i++)
-                active[i] = true;
-
-            offset[mlen] = srclen;
-
-            while (beginning < srclen)
-            {
-
-                best = mlen;    // as bad as it gets
+            m_host.AddScriptLPS(1);
 
-                //    Scan for separators
+            /*
+             * Convert separator and spacer lists to C# strings.
+             * Also filter out null strings so we don't hang.
+             */
+            for (i = 0; i < seplen; i ++) {
+                d = separray[i].ToString();
+                if (d.Length > 0) {
+                    delarray[dellen++] = d;
+                }
+            }
+            seplen = dellen;
 
             for (i = 0; i < spclen; i ++) {
                 d = spcarray[i].ToString();
@@ -8999,45 +9004,29 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api
                     }
                 }
 
-                //    This is the normal exit from the scanning loop
-
-                if (best == mlen)
-                {
-                    // no markers were found on this pass
-                    // so we're pretty much done
-                    if ((keepNulls) || ((!keepNulls) && (srclen - beginning) > 0))
-                        tokens.Add(new LSL_String(src.Substring(beginning, srclen - beginning)));
-                    break;
+                /*
+                 * Output source string starting at i through start of earliest delimeter.
+                 */
+                if (keepNulls || (earliestSrc > i)) {
+                    outarray[outlen++] = src.Substring(i, earliestSrc - i);
                 }
 
-                //    Otherwise we just add the newly delimited token
-                //    and recalculate where the search should continue.
-                if ((keepNulls) || ((!keepNulls) && (offset[best] - beginning) > 0))
-                    tokens.Add(new LSL_String(src.Substring(beginning,offset[best]-beginning)));
+                /*
+                 * If no delimeter found at or after i, we're done scanning.
+                 */
+                if (earliestDel < 0) break;
 
-                if (best < seplen)
-                {
-                    beginning = offset[best] + (separray[best].ToString()).Length;
-                }
-                else
-                {
-                    beginning = offset[best] + (spcarray[best - seplen].ToString()).Length;
-                    string str = spcarray[best - seplen].ToString();
-                    if ((keepNulls) || ((!keepNulls) && (str.Length > 0)))
-                        tokens.Add(new LSL_String(str));
+                /*
+                 * If delimeter was a spacer, output the spacer.
+                 */
+                if (earliestDel >= seplen) {
+                    outarray[outlen++] = earliestStr;
                 }
-            }
-
-            //    This an awkward an not very intuitive boundary case. If the
-            //    last substring is a tokenizer, then there is an implied trailing
-            //    null list entry. Hopefully the single comparison will not be too
-            //    arduous. Alternatively the 'break' could be replced with a return
-            //    but that's shabby programming.
 
-            if ((beginning == srclen) && (keepNulls))
-            {
-                if (srclen != 0)
-                    tokens.Add(new LSL_String(""));
+                /*
+                 * Look at rest of src string following delimeter.
+                 */
+                i = earliestSrc + earliestStr.Length;
             }
 
             /*
@@ -9049,19 +9038,7 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api
             }
             return new LSL_List(outlist);
         }
-        
-        public LSL_List llParseString2List(string src, LSL_List separators, LSL_List spacers)
-        {
-            m_host.AddScriptLPS(1);
-            return this.ParseString(src, separators, spacers, false);
-        }
-        
-        public LSL_List llParseStringKeepNulls(string src, LSL_List separators, LSL_List spacers)
-        {
-            m_host.AddScriptLPS(1);
-            return this.ParseString(src, separators, spacers, true);
-        }
-        
+
         public LSL_Integer llGetObjectPermMask(int mask)
         {
             m_host.AddScriptLPS(1);
-- 
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