initial import of NetBSD tree

1 files changed, 104 insertions, 0 deletions

diff --git a/usr.bin/cmp/regular.c b/usr.bin/cmp/regular.c
new file mode 100644
index 00000000000..d1e8ceae8b4
--- /dev/null
+++ b/usr.bin/cmp/regular.c
@@ -0,0 +1,104 @@
+/*      $NetBSD: regular.c,v 1.2 1995/09/08 03:22:59 tls Exp $      */
+
+/*-
+ * Copyright (c) 1991, 1993, 1994
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef lint
+#if 0
+static char sccsid[] = "@(#)regular.c	8.3 (Berkeley) 4/2/94";
+#else
+static char rcsid[] = "$NetBSD: regular.c,v 1.2 1995/09/08 03:22:59 tls Exp $";
+#endif
+#endif /* not lint */
+
+#include <sys/param.h>
+#include <sys/mman.h>
+#include <sys/stat.h>
+
+#include <err.h>
+#include <limits.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+
+#include "extern.h"
+
+void
+c_regular(fd1, file1, skip1, len1, fd2, file2, skip2, len2)
+	int fd1, fd2;
+	char *file1, *file2;
+	off_t skip1, len1, skip2, len2;
+{
+	u_char ch, *p1, *p2;
+	off_t byte, length, line;
+	int dfound;
+
+	if (sflag && len1 != len2)
+		exit(1);
+
+	if (skip1 > len1)
+		eofmsg(file1);
+	len1 -= skip1;
+	if (skip2 > len2)
+		eofmsg(file2);
+	len2 -= skip2;
+
+	length = MIN(len1, len2);
+	if (length > SIZE_T_MAX)
+		return (c_special(fd1, file1, skip1, fd2, file2, skip2));
+
+	if ((p1 = (u_char *)mmap(NULL,
+	    (size_t)length, PROT_READ, 0, fd1, skip1)) == (u_char *)-1)
+		err(ERR_EXIT, "%s", file1);
+	if ((p2 = (u_char *)mmap(NULL,
+	    (size_t)length, PROT_READ, 0, fd2, skip2)) == (u_char *)-1)
+		err(ERR_EXIT, "%s", file2);
+
+	dfound = 0;
+	for (byte = line = 1; length--; ++p1, ++p2, ++byte) {
+		if ((ch = *p1) != *p2)
+			if (lflag) {
+				dfound = 1;
+				(void)printf("%6qd %3o %3o\n", byte, ch, *p2);
+			} else
+				diffmsg(file1, file2, byte, line);
+				/* NOTREACHED */
+		if (ch == '\n')
+			++line;
+	}
+
+	if (len1 != len2)
+		eofmsg (len1 > len2 ? file2 : file1);
+	if (dfound)
+		exit(DIFF_EXIT);
+}