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- /* grdcmp.c
- Compare two grades.
-
- Copyright (C) 1992 Ian Lance Taylor
-
- This file is part of the Taylor UUCP uuconf library.
-
- This library is free software; you can redistribute it and/or
- modify it under the terms of the GNU Library General Public License
- as published by the Free Software Foundation; either version 2 of
- the License, or (at your option) any later version.
-
- This library 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
- Library General Public License for more details.
-
- You should have received a copy of the GNU Library General Public
- License along with this library; if not, write to the Free Software
- Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
-
- The author of the program may be contacted at ian@airs.com or
- c/o Cygnus Support, 48 Grove Street, Somerville, MA 02144.
- */
-
- #include "uucnfi.h"
-
- #if USE_RCS_ID
- const char _uuconf_grdcmp_rcsid[] = "$Id: grdcmp.c,v 1.5 1995/06/21 19:22:39 ian Rel $";
- #endif
-
- #include <ctype.h>
-
- /* Compare two grades, returning < 0 if b1 should be executed before
- b2, == 0 if they are the same, or > 0 if b1 should be executed
- after b2. This can not fail, and does not return a standard uuconf
- error code.
-
- This implementation assumes that the upper case letters are in
- sequence, and that the lower case letters are in sequence. */
-
- int
- uuconf_grade_cmp (barg1, barg2)
- int barg1;
- int barg2;
- {
- int b1, b2;
-
- /* Make sure the arguments are unsigned. */
- b1 = (int) BUCHAR (barg1);
- b2 = (int) BUCHAR (barg2);
-
- if (isdigit (b1))
- {
- if (isdigit (b2))
- return b1 - b2;
- else
- return -1;
- }
- else if (isupper (b1))
- {
- if (isdigit (b2))
- return 1;
- else if (isupper (b2))
- return b1 - b2;
- else
- return -1;
- }
- else
- {
- if (! islower (b2))
- return 1;
- else
- return b1 - b2;
- }
- }
-