[ekiga/gnome-2-26] Backported change from master. Added missing function.

[Damien Sandras <dsandras src gnome org>]

commit 6e18780bdffc1264638d5e105ef7f051254f0c12
Author: Damien Sandras <dsandras seconix com>
Date:   Thu Jul 2 09:31:39 2009 +0200

    Backported change from master. Added missing function.

 lib/engine/components/opal/opal-call.cpp |   18 ++++++++++++++++++
 1 files changed, 18 insertions(+), 0 deletions(-)
---
diff --git a/lib/engine/components/opal/opal-call.cpp b/lib/engine/components/opal/opal-call.cpp
index e56f3a6..b88148c 100644
--- a/lib/engine/components/opal/opal-call.cpp
+++ b/lib/engine/components/opal/opal-call.cpp
@@ -48,6 +48,24 @@
 
 using namespace Opal;
 
+static void
+strip_special_chars (std::string& str, char* special_chars, bool start)
+{
+  std::string::size_type idx;
+
+  unsigned i = 0;
+  while (i < strlen (special_chars)) {
+    idx = str.find_first_of (special_chars[i]);
+    if (idx != std::string::npos) {
+      if (start)
+        str = str.substr (idx+1);
+      else
+        str = str.substr (0, idx);
+    }
+    i++;
+  }
+}
+
 class CallSetup : public PThread
 {
   PCLASSINFO(CallSetup, PThread);