From e9f1786847cf34542c5735dcc9f74835a144341e Mon Sep 17 00:00:00 2001
From: Matthew Fernandez <matthew.fernandez@gmail.com>
Date: Sat, 26 Mar 2022 13:08:17 -0700
Subject: [PATCH] tests: remove unused cdiff.c

---
 ci/clang_format.py |  1 -
 rtest/cdiff.c      | 99 ----------------------------------------------
 2 files changed, 100 deletions(-)
 delete mode 100644 rtest/cdiff.c

diff --git a/ci/clang_format.py b/ci/clang_format.py
index 7201ea2fd..a42aa1e0f 100644
--- a/ci/clang_format.py
+++ b/ci/clang_format.py
@@ -841,7 +841,6 @@ EXCLUDE = (
   "plugin/webp/gvplugin_webp.c",
   "plugin/xlib/gvdevice_xlib.c",
   "plugin/xlib/gvplugin_xlib.c",
-  "rtest/cdiff.c",
   "rtest/check-package-version.c",
   "tclpkg/gdtclft/gdtclft.c",
   "tclpkg/gv/gv.cpp",
diff --git a/rtest/cdiff.c b/rtest/cdiff.c
deleted file mode 100644
index 9743e5edf..000000000
--- a/rtest/cdiff.c
+++ /dev/null
@@ -1,99 +0,0 @@
-/*************************************************************************
- * Copyright (c) 2011 AT&T Intellectual Property 
- * All rights reserved. This program and the accompanying materials
- * are made available under the terms of the Eclipse Public License v1.0
- * which accompanies this distribution, and is available at
- * http://www.eclipse.org/legal/epl-v10.html
- *
- * Contributors: See CVS logs. Details at http://www.graphviz.org/
- *************************************************************************/
-
-#include <errno.h>
-#include <stdio.h>
-#include <unistd.h>
-#include <stdlib.h>
-#include <string.h>
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <fcntl.h>
-
-#include <cgraph/exit.h>
-
-static int openF(char *fname)
-{
-    int fd = open(fname, O_RDONLY);
-
-    if (fd < 0) {
-	fprintf(stderr, "Could not open %s for reading: %s\n\n", fname,
-	        strerror(errno));
-	graphviz_exit(1);
-    }
-    return fd;
-}
-
-static int fileSize(int fd)
-{
-    struct stat sb;
-
-    fstat(fd, &sb);
-    return sb.st_size;
-}
-
-main(int argc, char *argv[])
-{
-    char *p1;
-    char *p2;
-    int i, count;
-    int f1, f2;
-    int l1, l2;
-    int n1, n2, n;
-    int xval, base, len;
-    char buf1[BUFSIZ];
-    char buf2[BUFSIZ];
-
-    if (argc != 3) {
-	fprintf(stderr, "Usage: %s <file1> <file2>\n", argv[0]);
-	graphviz_exit(1);
-    }
-
-    f1 = openF(argv[1]);
-    f2 = openF(argv[2]);
-
-    l1 = fileSize(f1);
-    l2 = fileSize(f2);
-    if (l1 < l2) {
-	len = l1;
-	base = l2;
-	count = l2 - l1;
-    } else {
-	len = l2;
-	base = l1;
-	count = l1 - l2;
-    }
-
-    i = 0;
-    while (i < len) {
-	n1 = read(f1, buf1, BUFSIZ);
-	n2 = read(f2, buf2, BUFSIZ);
-	if (n1 < n2)
-	    n = i + n1;
-	else
-	    n = i + n2;
-	p1 = buf1;
-	p2 = buf2;
-	while (i < n) {
-	    if (*p1++ != *p2++)
-		count++;
-	    i++;
-	}
-    }
-
-    if (count) {
-	printf("%d/%d(%f)\n", count, base, ((double) count) / base);
-	xval = 2;
-    } else
-	xval = 0;
-
-    graphviz_exit(xval);
-
-}
-- 
2.40.0