add method isEmpty() to OUStringBuffer

Change-Id: Ia11d97eebbb08e8058a5f919ed3db3029ce39a78
Reviewed-on: https://gerrit.libreoffice.org/2017
Reviewed-by: Norbert Thiebaud <nthiebaud@gmail.com>
Tested-by: Norbert Thiebaud <nthiebaud@gmail.com>

1 files changed, 13 insertions, 0 deletions

diff --git a/sal/inc/rtl/ustrbuf.hxx b/sal/inc/rtl/ustrbuf.hxx
index 98f1fc5ee911..b8bae09fb8b4 100644
--- a/sal/inc/rtl/ustrbuf.hxx
+++ b/sal/inc/rtl/ustrbuf.hxx
@@ -282,6 +282,19 @@ public:
     }
 
     /**
+      Checks if a string buffer is empty.
+
+      @return   sal_True if the string buffer is empty;
+                sal_False, otherwise.
+
+      @since LibreOffice 4.0
+    */
+    bool isEmpty() const SAL_THROW(())
+    {
+        return pData->length == 0;
+    }
+
+    /**
         Returns the current capacity of the String buffer.
 
         The capacity