Import NetBSD cmp
Change-Id: I0e7f6c69742db475ddba6a9159f167a53d151169
This commit is contained in:
David van Moolenbroek
parent
93d36fc9d8
commit
e7ca52fbf9
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@ -4,7 +4,7 @@
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SUBDIR= add_route arp at backup btrace \
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cawf cdprobe \
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ci cleantmp cmp co \
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ci cleantmp co \
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compress crc cron crontab \
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decomp16 DESCRIBE devmand devsize dhcpd \
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dhrystone diff diskctl \
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@ -1,4 +0,0 @@
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PROG= cmp
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MAN=
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.include <bsd.prog.mk>
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@ -1,129 +0,0 @@
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/* cmp - compare two files Author: Kees J. Bot. */
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#include <sys/types.h>
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#include <fcntl.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <stdio.h>
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#include <string.h>
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#include <errno.h>
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void fatal(char *label);
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int cmp(int fd1, int fd2);
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void Usage(void);
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int main(int argc, char **argv);
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#define BLOCK 4096
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static int loud = 0, silent = 0;
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static char *name1, *name2;
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int main(argc, argv)
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int argc;
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char **argv;
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{
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int fd1, fd2;
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/* Process the '-l' or '-s' option. */
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while (argc > 1 && argv[1][0] == '-' && argv[1][1] != 0) {
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if (argv[1][2] != 0) Usage();
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switch (argv[1][1]) {
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case '-':
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/* '--': no-op option. */
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break;
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case 'l':
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loud = 1;
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break;
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case 's':
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silent = 1;
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break;
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default:
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Usage();
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}
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argc--;
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argv++;
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}
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if (argc != 3) Usage();
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/* Open the first file, '-' means standard input. */
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if (argv[1][0] == '-' && argv[1][1] == 0) {
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name1 = "stdin";
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fd1 = 0;
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} else {
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name1 = argv[1];
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if ((fd1 = open(name1, 0)) < 0) fatal(name1);
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}
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/* Second file likewise. */
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if (argv[2][0] == '-' && argv[2][1] == 0) {
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name2 = "stdin";
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fd2 = 0;
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} else {
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name2 = argv[2];
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if ((fd2 = open(name2, 0)) < 0) fatal(name2);
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}
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exit(cmp(fd1, fd2));
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}
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int cmp(fd1, fd2)
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int fd1, fd2;
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{
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static char buf1[BLOCK], buf2[BLOCK];
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int n1 = 0, n2 = 0, i1 = 0, i2 = 0, c1, c2;
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off_t pos = 0, line = 1;
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int eof = 0, differ = 0;
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for (;;) {
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if (i1 == n1) {
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pos += n1;
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if ((n1 = read(fd1, buf1, sizeof(buf1))) <= 0) {
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if (n1 < 0) fatal(name1);
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eof |= 1;
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}
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i1 = 0;
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}
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if (i2 == n2) {
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if ((n2 = read(fd2, buf2, sizeof(buf2))) <= 0) {
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if (n2 < 0) fatal(name2);
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eof |= 2;
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}
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i2 = 0;
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}
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if (eof != 0) break;
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c1 = buf1[i1++];
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c2 = buf2[i2++];
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if (c1 != c2) {
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if (!loud) {
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if (!silent) {
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printf("%s %s differ: char %d, line %d\n",
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name1, name2, pos + i1, line);
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}
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return(1);
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}
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printf("%10d %3o %3o\n", pos + i1, c1 & 0xFF, c2 & 0xFF);
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differ = 1;
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}
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if (c1 == '\n') line++;
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}
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if (eof == (1 | 2)) return(differ);
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if (!silent) fprintf(stderr, "cmp: EOF on %s\n", eof == 1 ? name1 : name2);
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return(1);
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}
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void fatal(label)
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char *label;
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{
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if (!silent) fprintf(stderr, "cmp: %s: %s\n", label, strerror(errno));
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exit(2);
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}
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void Usage()
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{
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fprintf(stderr, "Usage: cmp [-l | -s] file1 file2\n");
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exit(2);
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}
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@ -1,6 +1,6 @@
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MAN= at.1 \
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bsfilt.1 cawf.1 chgrp.1 \
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cmp.1 compress.1 \
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compress.1 \
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crc.1 crontab.1 \
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dhrystone.1 dosdir.1 dosread.1 doswrite.1 \
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eject.1 \
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@ -1,42 +0,0 @@
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.TH CMP 1
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.SH NAME
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cmp \- compare two files
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.SH SYNOPSIS
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\fBcmp\fR [\fB\-ls\fR] \fIfile1 file2\fR
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.br
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.de FL
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.TP
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\\fB\\$1\\fR
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\\$2
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..
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.de EX
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.TP 20
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\\fB\\$1\\fR
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# \\$2
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..
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.SH OPTIONS
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.TP 5
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.B \-l
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# Loud mode. Print bytes that differ (in octal)
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.TP 5
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.B \-s
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# Silent mode. Print nothing, just return exit status
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.SH EXAMPLES
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.TP 20
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.B cmp file1 file2
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# Tell whether the files are the same
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.TP 20
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.B cmp \-l file1 file2
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# Print all corresponding bytes that differ
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.SH DESCRIPTION
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.PP
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Two files are compared.
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If they are identical, exit status 0 is returned.
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If they differ, exit status 1 is returned.
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If the files cannot be opened, exit status 2 is returned.
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If one of the file arguments is \-, then
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\fIstdin\fR is compared to
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the other file.
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.SH "SEE ALSO"
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.BR comm (1),
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.BR diff (1).
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@ -6,7 +6,7 @@
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SUBDIR= asa \
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banner basename \
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bzip2 bzip2recover cal calendar \
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checknr chpass cksum col colcrt colrm \
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checknr chpass cksum cmp col colcrt colrm \
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column comm csplit ctags cut \
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deroff dirname du \
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env expand \
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@ -0,0 +1,7 @@
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# @(#)Makefile 8.1 (Berkeley) 6/6/93
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# $NetBSD: Makefile,v 1.4 1997/01/09 20:18:26 tls Exp $
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PROG= cmp
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SRCS= cmp.c misc.c regular.c special.c
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.include <bsd.prog.mk>
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@ -0,0 +1,105 @@
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.\" $NetBSD: cmp.1,v 1.9 2003/08/07 11:13:21 agc Exp $
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.\"
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.\" Copyright (c) 1987, 1990, 1993
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.\" The Regents of the University of California. All rights reserved.
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.\"
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.\" This code is derived from software contributed to Berkeley by
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.\" the Institute of Electrical and Electronics Engineers, Inc.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer.
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\" 3. Neither the name of the University nor the names of its contributors
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.\" may be used to endorse or promote products derived from this software
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.\" without specific prior written permission.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
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.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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.\" SUCH DAMAGE.
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.\"
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.\" @(#)cmp.1 8.1 (Berkeley) 6/6/93
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.\"
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.Dd June 6, 1993
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.Dt CMP 1
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.Os
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.Sh NAME
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.Nm cmp
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.Nd compare two files
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.Sh SYNOPSIS
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.Nm
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.Op Fl l | Fl s
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.Ar file1 file2
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.Op Ar skip1 Op Ar skip2
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.Sh DESCRIPTION
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The cmp utility compares two files of any type and writes the results
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to the standard output.
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By default,
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.Nm
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is silent if the files are the same; if they differ, the byte
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and line number at which the first difference occurred is reported.
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.Pp
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Bytes and lines are numbered beginning with one.
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.Pp
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The following options are available:
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.Bl -tag -width flag
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.It Fl l
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Print the byte number (decimal) and the differing
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byte values (octal) for each difference.
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.It Fl s
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Print nothing for differing files; return exit
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status only.
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.El
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.Pp
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The optional arguments
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.Ar skip1
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and
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.Ar skip2
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are the byte offsets from the beginning of
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.Ar file1
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and
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.Ar file2 ,
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respectively, where the comparison will begin.
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The offset is decimal by default, but may be expressed as an hexadecimal
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or octal value by preceding it with a leading ``0x'' or ``0''.
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.Pp
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The
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.Nm
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utility exits with one of the following values:
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.Bl -tag -width 4n
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.It 0
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The files are identical.
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.It 1
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The files are different; this includes the case
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where one file is identical to the first part of
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the other.
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In the latter case, if the
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.Fl s
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option has not been specified,
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.Nm
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writes to standard output that EOF was reached in the shorter
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file (before any differences were found).
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.It \*[Gt]1
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An error occurred.
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.El
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.Sh SEE ALSO
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.Xr diff 1 ,
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.Xr diff3 1
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.Sh STANDARDS
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The
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.Nm
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utility is expected to be
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.St -p1003.2
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compatible.
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@ -0,0 +1,164 @@
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/* $NetBSD: cmp.c,v 1.18 2011/08/29 14:14:11 joerg Exp $ */
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/*
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* Copyright (c) 1987, 1990, 1993, 1994
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
|
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* notice, this list of conditions and the following disclaimer.
|
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* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in the
|
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the University nor the names of its contributors
|
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* may be used to endorse or promote products derived from this software
|
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
||||
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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#ifndef lint
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__COPYRIGHT("@(#) Copyright (c) 1987, 1990, 1993, 1994\
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The Regents of the University of California. All rights reserved.");
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#endif /* not lint */
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#ifndef lint
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#if 0
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static char sccsid[] = "@(#)cmp.c 8.3 (Berkeley) 4/2/94";
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#else
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__RCSID("$NetBSD: cmp.c,v 1.18 2011/08/29 14:14:11 joerg Exp $");
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#endif
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#endif /* not lint */
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <err.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <locale.h>
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#include "extern.h"
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int lflag, sflag;
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__dead static void usage(void);
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int
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main(int argc, char *argv[])
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{
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struct stat sb1, sb2;
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off_t skip1 = 0, skip2 = 0;
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int ch, fd1, fd2, special;
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const char *file1, *file2;
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setlocale(LC_ALL, "");
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while ((ch = getopt(argc, argv, "ls")) != -1)
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switch (ch) {
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case 'l': /* print all differences */
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lflag = 1;
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break;
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case 's': /* silent run */
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sflag = 1;
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break;
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case '?':
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default:
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usage();
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}
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argv += optind;
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argc -= optind;
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if (lflag && sflag)
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errx(ERR_EXIT, "only one of -l and -s may be specified");
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if (argc < 2 || argc > 4)
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usage();
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/* Backward compatibility -- handle "-" meaning stdin. */
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special = 0;
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if (strcmp(file1 = argv[0], "-") == 0) {
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special = 1;
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fd1 = 0;
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file1 = "stdin";
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}
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else if ((fd1 = open(file1, O_RDONLY, 0)) < 0) {
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if (!sflag)
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warn("%s", file1);
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exit(ERR_EXIT);
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}
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if (strcmp(file2 = argv[1], "-") == 0) {
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if (special)
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errx(ERR_EXIT,
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"standard input may only be specified once");
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special = 1;
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fd2 = 0;
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file2 = "stdin";
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}
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else if ((fd2 = open(file2, O_RDONLY, 0)) < 0) {
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if (!sflag)
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warn("%s", file2);
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exit(ERR_EXIT);
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||||
}
|
||||
|
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if (argc > 2) {
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char *ep;
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errno = 0;
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skip1 = strtoq(argv[2], &ep, 0);
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if (errno || ep == argv[2])
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usage();
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if (argc == 4) {
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skip2 = strtoq(argv[3], &ep, 0);
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if (errno || ep == argv[3])
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usage();
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}
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}
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if (!special) {
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if (fstat(fd1, &sb1))
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err(ERR_EXIT, "%s", file1);
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if (!S_ISREG(sb1.st_mode))
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special = 1;
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else {
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if (fstat(fd2, &sb2))
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err(ERR_EXIT, "%s", file2);
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if (!S_ISREG(sb2.st_mode))
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special = 1;
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}
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}
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if (special)
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c_special(fd1, file1, skip1, fd2, file2, skip2);
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else
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c_regular(fd1, file1, skip1, sb1.st_size,
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fd2, file2, skip2, sb2.st_size);
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exit(0);
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}
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static void
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usage(void)
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{
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|
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(void)fprintf(stderr,
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"usage: cmp [-l | -s] file1 file2 [skip1 [skip2]]\n");
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exit(ERR_EXIT);
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}
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|
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@ -0,0 +1,44 @@
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/* $NetBSD: extern.h,v 1.9 2011/08/29 14:14:11 joerg Exp $ */
|
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|
||||
/*-
|
||||
* 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. 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.
|
||||
*
|
||||
* @(#)extern.h 8.3 (Berkeley) 4/2/94
|
||||
*/
|
||||
|
||||
#define OK_EXIT 0
|
||||
#define DIFF_EXIT 1
|
||||
#define ERR_EXIT 2 /* error exit code */
|
||||
|
||||
void c_regular(int, const char *, off_t, off_t, int, const char *, off_t, off_t);
|
||||
void c_special(int, const char *, off_t, int, const char *, off_t);
|
||||
__dead void diffmsg(const char *, const char *, off_t, off_t);
|
||||
__dead void eofmsg(const char *, off_t, off_t);
|
||||
__dead void errmsg(const char *, off_t, off_t);
|
||||
|
||||
extern int lflag, sflag;
|
||||
|
|
@ -0,0 +1,84 @@
|
|||
/* $NetBSD: misc.c,v 1.12 2009/04/11 12:16:12 lukem 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. 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.
|
||||
*/
|
||||
|
||||
#include <sys/cdefs.h>
|
||||
#ifndef lint
|
||||
#if 0
|
||||
static char sccsid[] = "@(#)misc.c 8.3 (Berkeley) 4/2/94";
|
||||
#else
|
||||
__RCSID("$NetBSD: misc.c,v 1.12 2009/04/11 12:16:12 lukem Exp $");
|
||||
#endif
|
||||
#endif /* not lint */
|
||||
|
||||
#include <sys/types.h>
|
||||
|
||||
#include <err.h>
|
||||
#include <stdio.h>
|
||||
#include <stdlib.h>
|
||||
|
||||
#include "extern.h"
|
||||
|
||||
void
|
||||
errmsg(const char *file, off_t byte, off_t line)
|
||||
{
|
||||
if (lflag)
|
||||
err(ERR_EXIT, "%s: char %lld, line %lld", file,
|
||||
(long long)byte, (long long)line);
|
||||
else
|
||||
err(ERR_EXIT, "%s", file);
|
||||
}
|
||||
|
||||
void
|
||||
eofmsg(const char *file, off_t byte, off_t line)
|
||||
{
|
||||
if (!sflag) {
|
||||
if (!lflag)
|
||||
warnx("EOF on %s", file);
|
||||
else {
|
||||
if (line > 0)
|
||||
warnx("EOF on %s: char %lld, line %lld",
|
||||
file, (long long)byte, (long long)line);
|
||||
else
|
||||
warnx("EOF on %s: char %lld",
|
||||
file, (long long)byte);
|
||||
}
|
||||
}
|
||||
exit(DIFF_EXIT);
|
||||
}
|
||||
|
||||
void
|
||||
diffmsg(const char *file1, const char *file2, off_t byte, off_t line)
|
||||
{
|
||||
if (!sflag)
|
||||
(void)printf("%s %s differ: char %lld, line %lld\n",
|
||||
file1, file2, (long long)byte, (long long)line);
|
||||
exit(DIFF_EXIT);
|
||||
}
|
||||
|
|
@ -0,0 +1,118 @@
|
|||
/* $NetBSD: regular.c,v 1.24 2013/11/20 17:19:14 kleink 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. 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.
|
||||
*/
|
||||
|
||||
#include <sys/cdefs.h>
|
||||
#ifndef lint
|
||||
#if 0
|
||||
static char sccsid[] = "@(#)regular.c 8.3 (Berkeley) 4/2/94";
|
||||
#else
|
||||
__RCSID("$NetBSD: regular.c,v 1.24 2013/11/20 17:19:14 kleink 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 <stdint.h>
|
||||
#include <stdio.h>
|
||||
|
||||
#include "extern.h"
|
||||
|
||||
void
|
||||
c_regular(int fd1, const char *file1, off_t skip1, off_t len1,
|
||||
int fd2, const char *file2, off_t skip2, off_t len2)
|
||||
{
|
||||
u_char ch, *p1, *p2;
|
||||
off_t byte, length, line;
|
||||
int dfound;
|
||||
size_t blk_sz, blk_cnt;
|
||||
|
||||
if (sflag && len1 != len2)
|
||||
exit(1);
|
||||
|
||||
if (skip1 > len1)
|
||||
eofmsg(file1, len1 + 1, 0);
|
||||
len1 -= skip1;
|
||||
if (skip2 > len2)
|
||||
eofmsg(file2, len2 + 1, 0);
|
||||
len2 -= skip2;
|
||||
|
||||
byte = line = 1;
|
||||
dfound = 0;
|
||||
length = MIN(len1, len2);
|
||||
for (blk_sz = 1024 * 1024; length != 0; length -= blk_sz) {
|
||||
if ((uintmax_t)blk_sz > (uintmax_t)length)
|
||||
blk_sz = length;
|
||||
p1 = mmap(NULL, blk_sz, PROT_READ, MAP_FILE|MAP_SHARED,
|
||||
fd1, skip1);
|
||||
if (p1 == MAP_FAILED)
|
||||
goto mmap_failed;
|
||||
|
||||
p2 = mmap(NULL, blk_sz, PROT_READ, MAP_FILE|MAP_SHARED,
|
||||
fd2, skip2);
|
||||
if (p2 == MAP_FAILED) {
|
||||
munmap(p1, blk_sz);
|
||||
goto mmap_failed;
|
||||
}
|
||||
|
||||
blk_cnt = blk_sz;
|
||||
for (; blk_cnt--; ++p1, ++p2, ++byte) {
|
||||
if ((ch = *p1) != *p2) {
|
||||
if (!lflag) {
|
||||
diffmsg(file1, file2, byte, line);
|
||||
/* NOTREACHED */
|
||||
}
|
||||
dfound = 1;
|
||||
(void)printf("%6lld %3o %3o\n",
|
||||
(long long)byte, ch, *p2);
|
||||
}
|
||||
if (ch == '\n')
|
||||
++line;
|
||||
}
|
||||
munmap(p1 - blk_sz, blk_sz);
|
||||
munmap(p2 - blk_sz, blk_sz);
|
||||
skip1 += blk_sz;
|
||||
skip2 += blk_sz;
|
||||
}
|
||||
|
||||
if (len1 != len2)
|
||||
eofmsg(len1 > len2 ? file2 : file1, byte, line);
|
||||
if (dfound)
|
||||
exit(DIFF_EXIT);
|
||||
return;
|
||||
|
||||
mmap_failed:
|
||||
c_special(fd1, file1, skip1, fd2, file2, skip2);
|
||||
}
|
||||
|
|
@ -0,0 +1,111 @@
|
|||
/* $NetBSD: special.c,v 1.14 2011/11/28 10:10:10 wiz 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. 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.
|
||||
*/
|
||||
|
||||
#include <sys/cdefs.h>
|
||||
#ifndef lint
|
||||
#if 0
|
||||
static char sccsid[] = "@(#)special.c 8.3 (Berkeley) 4/2/94";
|
||||
#else
|
||||
__RCSID("$NetBSD: special.c,v 1.14 2011/11/28 10:10:10 wiz Exp $");
|
||||
#endif
|
||||
#endif /* not lint */
|
||||
|
||||
#include <sys/types.h>
|
||||
|
||||
#include <err.h>
|
||||
#include <stdlib.h>
|
||||
#include <stdio.h>
|
||||
|
||||
#include "extern.h"
|
||||
|
||||
void
|
||||
c_special(int fd1, const char *file1, off_t skip1, int fd2, const char *file2, off_t skip2)
|
||||
{
|
||||
int ch1, ch2;
|
||||
off_t byte, line;
|
||||
FILE *fp1, *fp2;
|
||||
int dfound;
|
||||
|
||||
dfound = 0;
|
||||
if ((fp1 = fdopen(fd1, "r")) == NULL)
|
||||
err(ERR_EXIT, "%s", file1);
|
||||
if ((fp2 = fdopen(fd2, "r")) == NULL)
|
||||
err(ERR_EXIT, "%s", file2);
|
||||
|
||||
for (byte = line = 1; skip1--; byte++) {
|
||||
ch1 = getc(fp1);
|
||||
if (ch1 == EOF)
|
||||
goto eof;
|
||||
if (ch1 == '\n')
|
||||
line++;
|
||||
}
|
||||
for (byte = line = 1; skip2--; byte++) {
|
||||
ch2 = getc(fp2);
|
||||
if (ch2 == EOF)
|
||||
goto eof;
|
||||
if (ch2 == '\n')
|
||||
line++;
|
||||
}
|
||||
dfound = 0;
|
||||
for (byte = line = 1;; ++byte) {
|
||||
ch1 = getc(fp1);
|
||||
ch2 = getc(fp2);
|
||||
if (ch1 == EOF || ch2 == EOF)
|
||||
break;
|
||||
if (ch1 != ch2) {
|
||||
if (lflag) {
|
||||
dfound = 1;
|
||||
(void)printf("%6lld %3o %3o\n", (long long)byte,
|
||||
ch1, ch2);
|
||||
} else
|
||||
diffmsg(file1, file2, byte, line);
|
||||
/* NOTREACHED */
|
||||
}
|
||||
if (ch1 == '\n')
|
||||
++line;
|
||||
}
|
||||
|
||||
eof:
|
||||
if (ferror(fp1))
|
||||
errmsg(file1, byte, line);
|
||||
if (ferror(fp2))
|
||||
errmsg(file2, byte, line);
|
||||
if (feof(fp1)) {
|
||||
if (!feof(fp2))
|
||||
eofmsg(file1, byte, line);
|
||||
} else
|
||||
if (feof(fp2))
|
||||
eofmsg(file2, byte, line);
|
||||
(void)fclose(fp1);
|
||||
(void)fclose(fp2);
|
||||
if (dfound)
|
||||
exit(DIFF_EXIT);
|
||||
}
|
||||
Loading…
Reference in New Issue