add DBD::mysql::client_version() to have the client version without DB connections

Author: gfx

dbdimp.c

@@ -2031,7 +2031,7 @@ signed_my_ulonglong2str(my_ulonglong val, char *buf, STRLEN *len)
 }
 #endif
 
-static SV*
+SV*
 my_ulonglong2sv(pTHX_ my_ulonglong val)
 {
 #if IVSIZE >= 8

dbdimp.h

@@ -293,3 +293,5 @@ int mysql_st_free_result_sets (SV * sth, imp_sth_t * imp_sth);
 int mysql_db_async_result(SV* h, MYSQL_RES** resp);
 int mysql_db_async_ready(SV* h);
 int mysql_socket_ready(my_socket fd);
+
+SV* my_ulonglong2sv(pTHX_ my_ulonglong val);

mysql.xs

@@ -40,6 +40,12 @@ constant(name, arg)
   OUTPUT:
     RETVAL
 
+SV*
+client_version(pkg)
+  CODE:
+    RETVAL = my_ulonglong2sv(aTHX_ mysql_get_client_version());
+  OUTPUT:
+    RETVAL
 
 MODULE = DBD::mysql	PACKAGE = DBD::mysql::dr
 

t/version.t

@@ -13,4 +13,7 @@ is(
   'VERSION strings should be the same in all .pm files in dist'
 );
 
+diag("mysql_get_client_version: ", DBD::mysql->client_version);
+cmp_ok(DBD::mysql->client_version, ">", 0, "mysql_get_client_version is available as a standalone function");
+
 done_testing;