Backported Qarl's fix for VWR-8773: Closing parenthesis breaks urls

1 files changed, 34 insertions, 14 deletions

diff --git a/linden/indra/llui/lltexteditor.cpp b/linden/indra/llui/lltexteditor.cpp
index e56002f..90199f1 100644
--- a/linden/indra/llui/lltexteditor.cpp
+++ b/linden/indra/llui/lltexteditor.cpp
@@ -4260,35 +4260,55 @@ S32 LLTextEditor::findHTMLToken(const std::string &line, S32 pos, BOOL reverse)
         std::string openers=" \t\n('\"[{<>";
         std::string closers=" \t\n)'\"]}><;";
 
-        S32 m2 = 0;
-        S32 retval = 0;
+        S32 index = 0;
         
         if (reverse)
         {
-                
-                for (retval=pos; retval >= 0; retval--)
+                for (index=pos; index >= 0; index--)
                 {
-                        m2 = openers.find(line.substr(retval,1));
+                        char c = line[index];
+                        S32 m2 = openers.find(c);
                         if (m2 >= 0)
                         {
-                                break;
+                                return index+1;
                         }
                 }
-                return retval+1;
         } 
         else
         {
-                
-                for (retval=pos; retval<(S32)line.length(); retval++)
+                // adjust the search slightly, to allow matching parenthesis inside the URL
+                S32 paren_count = 0;
+                for (index=pos; index<(S32)line.length(); index++)
                 {
-                        m2 = closers.find(line.substr(retval,1));
-                        if (m2 >= 0)
+                        char c = line[index];
+
+                        if (c == '(')
                         {
-                                break;
+                                paren_count++;
+                        }
+                        else if (c == ')')
+                        {
+                                if (paren_count <= 0)
+                                {
+                                        return index;
+                                }
+                                else
+                                {
+                                        paren_count--;
+                                }
+                        }
+                        else
+                        {
+                                S32 m2 = closers.find(c);
+                                if (m2 >= 0)
+                                {
+                                        return index;
+                                }
                         }
                 } 
-                return retval;
-        }
+        }               
+        
+        return index;
 }
 
 BOOL LLTextEditor::findHTML(const std::string &line, S32 *begin, S32 *end) const