X-Git-Url: http://git.kpe.io/?a=blobdiff_plain;ds=sidebyside;f=src%2Fsdf-2.c;h=57a8469f739cf2fb0b6429f279b0dadc240cb82b;hb=cb68417f9166da28aa56f8f423bcab56c1c26f1f;hp=89e9bf41f205f693335d8c0ef9324a9a9938fe7e;hpb=c50886476dddf65aa71d519509b42f71303a149a;p=ctsim.git

diff --git a/src/sdf-2.c b/src/sdf-2.c
index 89e9bf4..57a8469 100644
--- a/src/sdf-2.c
+++ b/src/sdf-2.c
@@ -2,8 +2,14 @@
 **  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 1.5 2000/05/24 22:50:04 kevin Exp $
 **  $Log: sdf-2.c,v $
+**  Revision 1.5  2000/05/24 22:50:04  kevin
+**  Added support for new SGP library
+**
+**  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 +34,7 @@
 **  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 +56,9 @@ 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 +71,10 @@ 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 +121,18 @@ 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];
@@ -135,11 +141,21 @@ main (int argc, char *const argv[])
 
   im_in1 = image_load (in_file1);
   im_in2 = image_load (in_file2);
+  if (im_in1 == NULL || im_in2 == NULL) {
+      fprintf(stderr, "Error reading an image");
+      return (1);
+  }
+
   if (im_in1->nx != im_in2->nx || im_in1->ny != im_in2->ny) {
-    fprintf(stderr, "Size of image 1 (%d,%d) and image 2 (%d,%d) do not match\n",
+    fprintf(stderr, "Error: Size of image 1 (%d,%d) and image 2 (%d,%d) do not match\n",
 	    im_in1->nx, im_in1->ny, im_in2->nx, im_in2->ny);
-    exit(1);
+    return(1);
+  }
+  if (im_in1->nx < 0 || im_in1->ny < 0) {
+      fprintf(stderr, "Error: Size of image < 0");
+      return(1);
   }
+
   im_out = image_create (out_file, im_in1->nx, im_in1->ny);
 
   if (opt_add) {
@@ -195,3 +211,12 @@ main (int argc, char *const argv[])
 
   return (0);
 }
+
+#ifndef NO_MAIN
+int 
+main (int argc, char *const argv[])
+{
+  return (sdf2_main(argc, argv));
+}
+#endif
+