r56: Improved option processing

[ctsim.git] / src / sdf-2.c

diff --git a/src/sdf-2.c b/src/sdf-2.c
index 89e9bf41f205f693335d8c0ef9324a9a9938fe7e..29ccc34ac570c665c5d59d0060231f5249991434 100644 (file)
--- a/src/sdf-2.c
+++ b/src/sdf-2.c
@@ -2,8 +2,11 @@
 **  This is part of the CTSim program
 **  Copyright (C) 1983-2000 Kevin Rosenberg
 **
-**  $Id: sdf-2.c,v 1.3 2000/05/11 01:06:30 kevin Exp $
+**  $Id: sdf-2.c,v 1.4 2000/05/16 04:33:59 kevin Exp $
 **  $Log: sdf-2.c,v $
+**  Revision 1.4  2000/05/16 04:33:59  kevin
+**  Improved option processing
+**
 **  Revision 1.3  2000/05/11 01:06:30  kevin
 **  Changed sprintf to snprintf
 **
@@ -28,6 +31,7 @@
 **  along with this program; if not, write to the Free Software
 **  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 ******************************************************************************/
+
 /* FILE
  *   sdf-2.c         Generate a SDF file from two input SDF files
  */
@@ -49,9 +53,9 @@ static struct option my_options[] =
 };
 
 void 
-usage (const char *program)
+sdf2_usage (const char *program)
 {
-  fprintf(stdout, "usage: %s infile1 infile2 outfile [OPTIONS]\n", kbasename(program));
+  fprintf(stdout, "sdf2_usage: %s infile1 infile2 outfile [OPTIONS]\n", kbasename(program));
   fprintf(stdout, "Generate an SDF2D file from two input SDF2D files\n");
   fprintf(stdout, "\n");
   fprintf(stdout, "     infile1    Name of first input SDF file\n");
@@ -64,11 +68,10 @@ usage (const char *program)
   fprintf(stdout, "     --verbose  Verbose modem\n");
   fprintf(stdout, "     --version  Print version\n");
   fprintf(stdout, "     --help     Print this help message\n");
-  exit(1);
 }
 
 int 
-main (int argc, char *const argv[])
+sdf2_main (int argc, char *const argv[])
 {
   IMAGE *im_in1;
   IMAGE *im_in2;
@@ -115,18 +118,18 @@ main (int argc, char *const argv[])
          exit(0);
        case O_HELP:
        case '?':
-         usage(argv[0]);
-         exit(0);
+         sdf2_usage(argv[0]);
+         return (0);
        default:
-         usage(argv[0]);
-         exit(1);
+         sdf2_usage(argv[0]);
+         return (1);
        }
     }
 
   if (optind + 3 != argc)
     {
-      usage(argv[0]);
-      exit(1);
+      sdf2_usage(argv[0]);
+      return (1);
     }
   
   in_file1 = argv[optind];
@@ -195,3 +198,12 @@ main (int argc, char *const argv[])
 
   return (0);
 }
+
+#ifndef NO_MAIN
+int 
+main (int argc, char *const argv[])
+{
+  return (sdf2_main(argc, argv));
+}
+#endif
+