_lib.sas

%put NOTE: You have called the macro _LIB, 2007-08-01.;
%put NOTE: Copyright (c) 2001-2007 Rodney Sparapani;
%put;

/*
Author:  Rodney Sparapani <rsparapa@mcw.edu>
Created: 2001-00-00

This file is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option)
any later version.

This file is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this file; see the file COPYING.  If not, write to
the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
*/

/* _LIB Documentation
    Return just the SAS LIBRARY name without the SAS DATASET name
    nor the DATASET option, if any.
            
    POSITIONAL Parameters  
            
    ARG1             SAS DATASET with DATASET option, if any.
*/

%macro _lib(arg1);

%if %index(%scan(&arg1, 1, %str(%()), .) %then %lowcase(%scan(&arg1, 1, .));
%else work;

%mend _lib;

%*VALIDATION TEST STREAM;
/* uncomment to re-validate

%put ATTN: %_lib(_null_);
%put ATTN: %_lib(lib1);
%put ATTN: %_lib(sashelp.voption);
%put ATTN: %_lib(sashelp.voption(obs=1.));
%put ATTN: %_lib(sashelp.option);
%put ATTN: %_lib(work.lib1);
%put ATTN: %_lib(work.lib2);

*/