Move string hash function into String class.

hashCode() seems to do sampling while creating the hash.
hashCode64() will not.

Change-Id: Id30f5a2a774cf5244dbc00da9649e95a532484be

1 files changed, 13 insertions, 0 deletions

diff --git a/include/rtl/string.hxx b/include/rtl/string.hxx
index fb7283b3a801..24bb98052e40 100644
--- a/include/rtl/string.hxx
+++ b/include/rtl/string.hxx
@@ -892,6 +892,19 @@ public:
     }
 
     /**
+      Returns a 64bit hash of the string data.
+      This hashes the entire data, while hashCode would do sampling for larger string sizes.
+
+      @return   a hash code value of the string data
+
+      @see hashCode() for simple hashes
+    */
+    sal_uInt64 hashCode64() const SAL_THROW(())
+    {
+        return rtl_str_hashCode64_WithLength( pData->buffer, pData->length );
+    }
+
+    /**
       Returns a hashcode for this string.
 
       @return   a hash code value for this object.