add rtl::OUStringBuffer::append(bool)

The same as 563fa900ba22bf83dfa58e67807ed0337f810576 , but this
time with extra care to not break anything with pointer->bool conversions.

Change-Id: Ifcea840e96da0fbfcf92b54141fb8ef9c5eb94ff

1 files changed, 22 insertions, 1 deletions

diff --git a/sal/inc/rtl/stringutils.hxx b/sal/inc/rtl/stringutils.hxx
index e8909327ac2c..c972d83ba3f5 100644
--- a/sal/inc/rtl/stringutils.hxx
+++ b/sal/inc/rtl/stringutils.hxx
@@ -88,19 +88,22 @@ So char[] and const char[] should always be used with their contents specified (
 turns them into char[N] or const char[N]), or char* and const char* should be used.
 */
 struct Dummy {};
-template< typename T1, typename T2 >
+template< typename T1, typename T2 = void >
 struct CharPtrDetector
 {
+    static const bool ok = false;
 };
 template< typename T >
 struct CharPtrDetector< const char*, T >
 {
     typedef T Type;
+    static const bool ok = true;
 };
 template< typename T >
 struct CharPtrDetector< char*, T >
 {
     typedef T Type;
+    static const bool ok = true;
 };
 
 template< typename T1, typename T2 >
@@ -167,6 +170,24 @@ struct ExceptCharArrayDetector< const char[ N ] >
 {
 };
 
+template< typename T1, typename T2 = void >
+struct SalUnicodePtrDetector
+{
+    static const bool ok = false;
+};
+template< typename T >
+struct SalUnicodePtrDetector< const sal_Unicode*, T >
+{
+    typedef T Type;
+    static const bool ok = true;
+};
+template< typename T >
+struct SalUnicodePtrDetector< sal_Unicode*, T >
+{
+    typedef T Type;
+    static const bool ok = true;
+};
+
 // SFINAE helper class
 template< typename T, bool >
 struct Enable