String cleanups.

Ported from 4cf0d8edaf1581c42949ad2cbb40183a2f657ddd

Change-Id: I4aa32fdeafdd17135c56b9f113f1abd06df892cf

3 files changed, 23 insertions, 1 deletions

diff --git a/include/rtl/string.hxx b/include/rtl/string.hxx
index f44ac54bad3d..7e0774838a7f 100644
--- a/include/rtl/string.hxx
+++ b/include/rtl/string.hxx
@@ -886,6 +886,8 @@ public:
       @return   a hash code value of the string data
 
       @see hashCode() for simple hashes
+
+      @since LibreOffice 4.3
     */
     sal_uInt64 hashCode64() const SAL_THROW(())
     {
diff --git a/include/rtl/ustring.hxx b/include/rtl/ustring.hxx
index 06ba97b8800e..4a6309a3fd0c 100644
--- a/include/rtl/ustring.hxx
+++ b/include/rtl/ustring.hxx
@@ -1187,6 +1187,21 @@ 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
+
+      @since LibreOffice 4.3
+    */
+    sal_uInt64 hashCode64() const SAL_THROW(())
+    {
+        return rtl_ustr_hashCode64_WithLength( pData->buffer, pData->length );
+    }
+
+    /**
       Returns a hashcode for this string.
 
       @return   a hash code value for this object.
diff --git a/sal/util/sal.map b/sal/util/sal.map
index 73595f240d8c..c052a9335125 100644
--- a/sal/util/sal.map
+++ b/sal/util/sal.map
@@ -221,7 +221,6 @@ UDK_3_0_0 {
         rtl_str_shortenedCompareIgnoreAsciiCase_WithLength;
         rtl_str_hashCode;
         rtl_str_hashCode_WithLength;
-        rtl_str_hashCode64_WithLength;
         rtl_str_indexOfChar;
         rtl_str_indexOfChar_WithLength;
         rtl_str_indexOfStr;
@@ -665,6 +664,12 @@ LIBO_UDK_4.1 { # symbols available in >= LibO 4.1
         rtl_ustr_toUInt64;
 } LIBO_UDK_4.0;
 
+LIBO_UDK_4.3 { #symbols available in >= LibO 4.3
+    global:
+         rtl_str_hashCode64_WithLength;
+         rtl_ustr_hashCode64_WithLength;
+} LIBO_UDK_4.2;
+
 PRIVATE_1.0 {
     global:
         osl_detail_ObjectRegistry_storeAddresses;