svn commit: r315051 - in head: . gnu/usr.bin gnu/usr.bin/diff usr.bin usr.bin/diff usr.bin/diff/tests
Baptiste Daroussin
bapt at FreeBSD.org
Sat Mar 11 05:01:32 UTC 2017
Author: bapt
Date: Sat Mar 11 05:01:29 2017
New Revision: 315051
URL: https://svnweb.freebsd.org/changeset/base/315051
Log:
Import diff from OpenBSD and remove GNU diff
Some of the modifications from the previous summer of code has been integrated
Modification for compatibility with GNU diff output has been added
Main difference with OpenBSD:
Implement multiple GNU diff options:
* --ignore-file-name-case
* --no-ignore-file-name-case
* --normal
* --tabsize
* --strip-trailing-cr
Make diff -p compatible with GNU diff
Implement diff -l
Make diff -r compatible with GNU diff
Capsicumize diffing 2 regular files
Add a simple test suite
Approved by: AsiaBSDcon devsummit
Obtained from: OpenBSD, GSoC
Relnotes: yes
Added:
head/usr.bin/diff/
head/usr.bin/diff/Makefile (contents, props changed)
head/usr.bin/diff/TODO (contents, props changed)
head/usr.bin/diff/diff.1 (contents, props changed)
head/usr.bin/diff/diff.c (contents, props changed)
head/usr.bin/diff/diff.h (contents, props changed)
head/usr.bin/diff/diffdir.c (contents, props changed)
head/usr.bin/diff/diffreg.c (contents, props changed)
head/usr.bin/diff/tests/
head/usr.bin/diff/tests/Makefile (contents, props changed)
head/usr.bin/diff/tests/diff.sh (contents, props changed)
head/usr.bin/diff/tests/input1.in (contents, props changed)
head/usr.bin/diff/tests/input2.in (contents, props changed)
head/usr.bin/diff/tests/input_c1.in (contents, props changed)
head/usr.bin/diff/tests/input_c2.in (contents, props changed)
head/usr.bin/diff/tests/simple.out (contents, props changed)
head/usr.bin/diff/tests/simple_b.out (contents, props changed)
head/usr.bin/diff/tests/simple_e.out (contents, props changed)
head/usr.bin/diff/tests/simple_i.out (contents, props changed)
head/usr.bin/diff/tests/simple_n.out (contents, props changed)
head/usr.bin/diff/tests/simple_p.out (contents, props changed)
head/usr.bin/diff/tests/simple_u.out (contents, props changed)
head/usr.bin/diff/tests/simple_w.out (contents, props changed)
head/usr.bin/diff/tests/unified_9999.out (contents, props changed)
head/usr.bin/diff/tests/unified_c9999.out (contents, props changed)
head/usr.bin/diff/tests/unified_p.out (contents, props changed)
head/usr.bin/diff/xmalloc.c (contents, props changed)
head/usr.bin/diff/xmalloc.h (contents, props changed)
Deleted:
head/gnu/usr.bin/diff/
Modified:
head/ObsoleteFiles.inc
head/UPDATING
head/gnu/usr.bin/Makefile
head/usr.bin/Makefile
Modified: head/ObsoleteFiles.inc
==============================================================================
--- head/ObsoleteFiles.inc Sat Mar 11 04:57:52 2017 (r315050)
+++ head/ObsoleteFiles.inc Sat Mar 11 05:01:29 2017 (r315051)
@@ -38,6 +38,8 @@
# xargs -n1 | sort | uniq -d;
# done
+# 20170311: remove GNU diff
+OLD_FILES+=usr/share/man/man7/diff.7.gz
# 20170308: rename some tests
OLD_FILES+=usr/tests/bin/pwait/pwait
OLD_FILES+=usr/tests/usr.bin/timeout/timeout
Modified: head/UPDATING
==============================================================================
--- head/UPDATING Sat Mar 11 04:57:52 2017 (r315050)
+++ head/UPDATING Sat Mar 11 05:01:29 2017 (r315051)
@@ -51,6 +51,11 @@ NOTE TO PEOPLE WHO THINK THAT FreeBSD 12
****************************** SPECIAL WARNING: ******************************
+20170311:
+ GNU diff has been replaced by a BSD licensed diff. Some features of GNU
+ diff has not been implemented, if those are needed a newer version of
+ GNU diff is available via the diffutils package under the gdiff name.
+
20170302:
Clang, llvm, lldb, compiler-rt and libc++ have been upgraded to 4.0.0.
Please see the 20141231 entry below for information about prerequisites
Modified: head/gnu/usr.bin/Makefile
==============================================================================
--- head/gnu/usr.bin/Makefile Sat Mar 11 04:57:52 2017 (r315050)
+++ head/gnu/usr.bin/Makefile Sat Mar 11 05:01:29 2017 (r315051)
@@ -17,7 +17,7 @@ SUBDIR.${MK_GDB}+= gdb
.endif
SUBDIR.${MK_GCC}+= cc
-SUBDIR.${MK_GNU_DIFF}+= diff diff3
+SUBDIR.${MK_GNU_DIFF}+= diff3
SUBDIR.${MK_GNU_GREP}+= grep
SUBDIR.${MK_GPL_DTC}+= dtc
SUBDIR.${MK_TESTS}+= tests
Modified: head/usr.bin/Makefile
==============================================================================
--- head/usr.bin/Makefile Sat Mar 11 04:57:52 2017 (r315050)
+++ head/usr.bin/Makefile Sat Mar 11 05:01:29 2017 (r315051)
@@ -34,6 +34,7 @@ SUBDIR= alias \
csplit \
ctlstat \
cut \
+ diff \
dirname \
du \
elf2aout \
Added: head/usr.bin/diff/Makefile
==============================================================================
--- /dev/null 00:00:00 1970 (empty, because file is newly added)
+++ head/usr.bin/diff/Makefile Sat Mar 11 05:01:29 2017 (r315051)
@@ -0,0 +1,12 @@
+# $FreeBSD$
+
+.include <src.opts.mk>
+
+PROG= diff
+SRCS= diff.c diffdir.c diffreg.c xmalloc.c
+
+.if ${MK_TESTS} != "no"
+SUBDIR+= tests
+.endif
+
+.include <bsd.prog.mk>
Added: head/usr.bin/diff/TODO
==============================================================================
--- /dev/null 00:00:00 1970 (empty, because file is newly added)
+++ head/usr.bin/diff/TODO Sat Mar 11 05:01:29 2017 (r315051)
@@ -0,0 +1,18 @@
+-y:
+ * soc implemented it via calling sdiff directly, but some options are
+ incompatible so it is fragile
+ * just recommend the user to run sdiff directly and do not implement it
+ * make a libsdiff and use that directly to avoid duplicating the code
+
+to be implemented:
+--suppress-common-lines: depends on -y
+--ignore-blank-lines
+--horizon-lines
+--ignore-tab-expansion
+--line-format
+
+Will probably be not implemented:
+--GTYPE-group-format
+--LTYPE-line-format
+--speed-large-file: (Do we need that? only a stub?)
+--help (We have a manpage already)
Added: head/usr.bin/diff/diff.1
==============================================================================
--- /dev/null 00:00:00 1970 (empty, because file is newly added)
+++ head/usr.bin/diff/diff.1 Sat Mar 11 05:01:29 2017 (r315051)
@@ -0,0 +1,506 @@
+.\" $OpenBSD: diff.1,v 1.47 2015/11/24 19:35:41 jmc Exp $
+.\"
+.\" Copyright (c) 1980, 1990, 1993
+.\" 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.
+.\"
+.\" @(#)diff.1 8.1 (Berkeley) 6/30/93
+.\" $FreeBSD$
+.\"
+.Dd Septembr 03, 2017
+.Dt DIFF 1
+.Os
+.Sh NAME
+.Nm diff
+.Nd differential file and directory comparator
+.Sh SYNOPSIS
+.Nm diff
+.Op Fl abdipTtw
+.Oo
+.Fl c | e | f |
+.Fl n | q | u
+.Oc
+.Op Fl -ignore-case
+.Op Fl -no-ignore-case
+.Op Fl -normal
+.Op Fl -strip-trailing-cr
+.Op Fl -tabsize
+.Op Fl I Ar pattern
+.Op Fl L Ar label
+.Ar file1 file2
+.Nm diff
+.Op Fl abdilpTtw
+.Op Fl I Ar pattern
+.Op Fl L Ar label
+.Op Fl -ignore-case
+.Op Fl -no-ignore-case
+.Op Fl -normal
+.Op Fl -strip-trailing-cr
+.Op Fl -tabsize
+.Fl C Ar number
+.Ar file1 file2
+.Nm diff
+.Op Fl abdiltw
+.Op Fl I Ar pattern
+.Op Fl -ignore-case
+.Op Fl -no-ignore-case
+.Op Fl -normal
+.Op Fl -strip-trailing-cr
+.Op Fl -tabsize
+.Fl D Ar string
+.Ar file1 file2
+.Nm diff
+.Op Fl abdilpTtw
+.Op Fl I Ar pattern
+.Op Fl L Ar label
+.Op Fl -ignore-case
+.Op Fl -no-ignore-case
+.Op Fl -normal
+.Op Fl -tabsize
+.Op Fl -strip-trailing-cr
+.Fl U Ar number
+.Ar file1 file2
+.Nm diff
+.Op Fl abdilNPprsTtw
+.Oo
+.Fl c | e | f |
+.Fl n | q | u
+.Oc
+.Op Fl -ignore-case
+.Op Fl -no-ignore-case
+.Op Fl -normal
+.Op Fl -tabsize
+.Op Fl I Ar pattern
+.Bk -words
+.Op Fl L Ar label
+.Op Fl S Ar name
+.Op Fl X Ar file
+.Op Fl x Ar pattern
+.Ek
+.Ar dir1 dir2
+.Sh DESCRIPTION
+The
+.Nm
+utility compares the contents of
+.Ar file1
+and
+.Ar file2
+and writes to the standard output the list of changes necessary to
+convert one file into the other.
+No output is produced if the files are identical.
+.Pp
+Output options (mutually exclusive):
+.Bl -tag -width Ds
+.It Fl C Ar number
+Like
+.Fl c
+but produces a diff with
+.Ar number
+lines of context.
+.It Fl c
+Produces a diff with 3 lines of context.
+With
+.Fl c
+the output format is modified slightly:
+the output begins with identification of the files involved and
+their creation dates and then each change is separated
+by a line with fifteen
+.Li * Ns 's .
+The lines removed from
+.Ar file1
+are marked with
+.Sq \&-\ \& ;
+those added to
+.Ar file2
+are marked
+.Sq \+\ \& .
+Lines which are changed from one file to the other are marked in
+both files with
+.Sq !\ \& .
+Changes which lie within 3 lines of each other are grouped together on
+output.
+.It Fl D Ar string
+Creates a merged version of
+.Ar file1
+and
+.Ar file2
+on the standard output, with C preprocessor controls included so that
+a compilation of the result without defining
+.Ar string
+is equivalent to compiling
+.Ar file1 ,
+while defining
+.Ar string
+will yield
+.Ar file2 .
+.It Fl e
+Produces output in a form suitable as input for the editor utility,
+.Xr ed 1 ,
+which can then be used to convert file1 into file2.
+.Pp
+Extra commands are added to the output when comparing directories with
+.Fl e ,
+so that the result is a
+.Xr sh 1
+script for converting text files which are common to the two directories
+from their state in
+.Ar dir1
+to their state in
+.Ar dir2 .
+.It Fl f
+Identical output to that of the
+.Fl e
+flag, but in reverse order.
+It cannot be digested by
+.Xr ed 1 .
+.It Fl n
+Produces a script similar to that of
+.Fl e ,
+but in the opposite order and with a count of changed lines on each
+insert or delete command.
+This is the form used by
+.Xr rcsdiff 1 .
+.It Fl q
+Just print a line when the files differ.
+Does not output a list of changes.
+.It Fl U Ar number
+Like
+.Fl u
+but produces a diff with
+.Ar number
+lines of context.
+.It Fl u
+Produces a
+.Em unified
+diff with 3 lines of context.
+A unified diff is similar to the context diff produced by the
+.Fl c
+option.
+However, unlike with
+.Fl c ,
+all lines to be changed (added and/or removed) are present in
+a single section.
+.El
+.Pp
+Comparison options:
+.Bl -tag -width Ds
+.It Fl a
+Treat all files as
+.Tn ASCII
+text.
+Normally
+.Nm
+will simply print
+.Dq Binary files ... differ
+if files contain binary characters.
+Use of this option forces
+.Nm
+to produce a diff.
+.It Fl b
+Causes trailing blanks (spaces and tabs) to be ignored, and other
+strings of blanks to compare equal.
+.It Fl d
+Try very hard to produce a diff as small as possible.
+This may consume a lot of processing power and memory when processing
+large files with many changes.
+.It Fl I Ar pattern
+Ignores changes, insertions, and deletions whose lines match the
+extended regular expression
+.Ar pattern .
+Multiple
+.Fl I
+patterns may be specified.
+All lines in the change must match some pattern for the change to be
+ignored.
+See
+.Xr re_format 7
+for more information on regular expression patterns.
+.It Fl i
+Ignores the case of letters.
+E.g.,
+.Dq A
+will compare equal to
+.Dq a .
+.It Fl l
+Pass the output through
+.Xr pr 1
+to paginate it.
+.It Fl L Ar label
+Print
+.Ar label
+instead of the first (and second, if this option is specified twice)
+file name and time in the context or unified diff header.
+.It Fl p
+With unified and context diffs, show with each change
+the first 40 characters of the last line before the context beginning
+with a letter, an underscore or a dollar sign.
+For C source code following standard layout conventions, this will
+show the prototype of the function the change applies to.
+.It Fl T
+Print a tab rather than a space before the rest of the line for the
+normal, context or unified output formats.
+This makes the alignment of tabs in the line consistent.
+.It Fl t
+Will expand tabs in output lines.
+Normal or
+.Fl c
+output adds character(s) to the front of each line which may screw up
+the indentation of the original source lines and make the output listing
+difficult to interpret.
+This option will preserve the original source's indentation.
+.It Fl w
+Is similar to
+.Fl b
+but causes whitespace (blanks and tabs) to be totally ignored.
+E.g.,
+.Dq if (\ \&a == b \&)
+will compare equal to
+.Dq if(a==b) .
+.El
+.Pp
+Directory comparison options:
+.Bl -tag -width Ds
+.It Fl N
+If a file is found in only one directory, act as if it was found in the
+other directory too but was of zero size.
+.It Fl P
+If a file is found only in
+.Ar dir2 ,
+act as if it was found in
+.Ar dir1
+too but was of zero size.
+.It Fl r
+Causes application of
+.Nm
+recursively to common subdirectories encountered.
+.It Fl S Ar name
+Re-starts a directory
+.Nm
+in the middle, beginning with file
+.Ar name .
+.It Fl s
+Causes
+.Nm
+to report files which are the same, which are otherwise not mentioned.
+.It Fl X Ar file
+Exclude files and subdirectories from comparison whose basenames match
+lines in
+.Ar file .
+Multiple
+.Fl X
+options may be specified.
+.It Fl x Ar pattern
+Exclude files and subdirectories from comparison whose basenames match
+.Ar pattern .
+Patterns are matched using shell-style globbing via
+.Xr fnmatch 3 .
+Multiple
+.Fl x
+options may be specified.
+.El
+.Pp
+If both arguments are directories,
+.Nm
+sorts the contents of the directories by name, and then runs the
+regular file
+.Nm
+algorithm, producing a change list,
+on text files which are different.
+Binary files which differ,
+common subdirectories, and files which appear in only one directory
+are described as such.
+In directory mode only regular files and directories are compared.
+If a non-regular file such as a device special file or
+.Tn FIFO
+is encountered, a diagnostic message is printed.
+.Pp
+If only one of
+.Ar file1
+and
+.Ar file2
+is a directory,
+.Nm
+is applied to the non-directory file and the file contained in
+the directory file with a filename that is the same as the
+last component of the non-directory file.
+.Pp
+If either
+.Ar file1
+or
+.Ar file2
+is
+.Sq - ,
+the standard input is
+used in its place.
+.Ss Output Style
+The default (without
+.Fl e ,
+.Fl c ,
+or
+.Fl n
+.\" -C
+options)
+output contains lines of these forms, where
+.Va XX , YY , ZZ , QQ
+are line numbers respective of file order.
+.Pp
+.Bl -tag -width "XX,YYcZZ,QQ" -compact
+.It Li XX Ns Ic a Ns Li YY
+At (the end of) line
+.Va XX
+of
+.Ar file1 ,
+append the contents
+of line
+.Va YY
+of
+.Ar file2
+to make them equal.
+.It Li XX Ns Ic a Ns Li YY,ZZ
+Same as above, but append the range of lines,
+.Va YY
+through
+.Va ZZ
+of
+.Ar file2
+to line
+.Va XX
+of file1.
+.It Li XX Ns Ic d Ns Li YY
+At line
+.Va XX
+delete
+the line.
+The value
+.Va YY
+tells to which line the change would bring
+.Ar file1
+in line with
+.Ar file2 .
+.It Li XX,YY Ns Ic d Ns Li ZZ
+Delete the range of lines
+.Va XX
+through
+.Va YY
+in
+.Ar file1 .
+.It Li XX Ns Ic c Ns Li YY
+Change the line
+.Va XX
+in
+.Ar file1
+to the line
+.Va YY
+in
+.Ar file2 .
+.It Li XX,YY Ns Ic c Ns Li ZZ
+Replace the range of specified lines with the line
+.Va ZZ .
+.It Li XX,YY Ns Ic c Ns Li ZZ,QQ
+Replace the range
+.Va XX , Ns Va YY
+from
+.Ar file1
+with the range
+.Va ZZ , Ns Va QQ
+from
+.Ar file2 .
+.El
+.Pp
+These lines resemble
+.Xr ed 1
+subcommands to convert
+.Ar file1
+into
+.Ar file2 .
+The line numbers before the action letters pertain to
+.Ar file1 ;
+those after pertain to
+.Ar file2 .
+Thus, by exchanging
+.Ic a
+for
+.Ic d
+and reading the line in reverse order, one can also
+determine how to convert
+.Ar file2
+into
+.Ar file1 .
+As in
+.Xr ed 1 ,
+identical
+pairs (where num1 = num2) are abbreviated as a single
+number.
+.Sh FILES
+.Bl -tag -width /tmp/diff.XXXXXXXX -compact
+.It Pa /tmp/diff. Ns Ar XXXXXXXX
+Temporary file used when comparing a device or the standard input.
+Note that the temporary file is unlinked as soon as it is created
+so it will not show up in a directory listing.
+.El
+.Sh EXIT STATUS
+The
+.Nm
+utility exits with one of the following values:
+.Pp
+.Bl -tag -width Ds -offset indent -compact
+.It 0
+No differences were found.
+.It 1
+Differences were found.
+.It >1
+An error occurred.
+.El
+.Sh SEE ALSO
+.Xr cmp 1 ,
+.Xr comm 1 ,
+.Xr diff3 1 ,
+.Xr ed 1 ,
+.Xr patch 1 ,
+.Xr sdiff 1
+.Rs
+.%A James W. Hunt
+.%A M. Douglas McIlroy
+.%T "An Algorithm for Differential File Comparison"
+.%J Computing Science Technical Report
+.%Q Bell Laboratories 41
+.%D June 1976
+.Re
+.Sh STANDARDS
+The
+.Nm
+utility is compliant with the
+.St -p1003.1-2008
+specification.
+.Pp
+The flags
+.Op Fl aDdIiLlNnPpqSsTtwXx
+are extensions to that specification.
+.Sh HISTORY
+A
+.Nm
+command appeared in
+.At v6 .
Added: head/usr.bin/diff/diff.c
==============================================================================
--- /dev/null 00:00:00 1970 (empty, because file is newly added)
+++ head/usr.bin/diff/diff.c Sat Mar 11 05:01:29 2017 (r315051)
@@ -0,0 +1,454 @@
+/* $OpenBSD: diff.c,v 1.65 2015/12/29 19:04:46 gsoares Exp $ */
+
+/*
+ * Copyright (c) 2003 Todd C. Miller <Todd.Miller at courtesan.com>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ *
+ * Sponsored in part by the Defense Advanced Research Projects
+ * Agency (DARPA) and Air Force Research Laboratory, Air Force
+ * Materiel Command, USAF, under agreement number F39502-99-1-0512.
+ */
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include <sys/stat.h>
+
+#include <ctype.h>
+#include <err.h>
+#include <errno.h>
+#include <getopt.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <stdarg.h>
+#include <string.h>
+#include <unistd.h>
+#include <limits.h>
+
+#include "diff.h"
+#include "xmalloc.h"
+
+int lflag, Nflag, Pflag, rflag, sflag, Tflag, cflag;
+int diff_format, diff_context, status, ignore_file_case;
+int tabsize = 8;
+char *start, *ifdefname, *diffargs, *label[2], *ignore_pats;
+struct stat stb1, stb2;
+struct excludes *excludes_list;
+regex_t ignore_re;
+
+#define OPTIONS "0123456789aBbC:cdD:efhI:iL:lnNPpqrS:sTtU:uwX:x:"
+enum {
+ OPT_TSIZE = CHAR_MAX + 1,
+ OPT_STRIPCR,
+ OPT_IGN_FN_CASE,
+ OPT_NO_IGN_FN_CASE,
+ OPT_NORMAL,
+};
+
+static struct option longopts[] = {
+ { "text", no_argument, 0, 'a' },
+ { "ignore-space-change", no_argument, 0, 'b' },
+ { "context", optional_argument, 0, 'C' },
+ { "ifdef", required_argument, 0, 'D' },
+ { "minimal", no_argument, 0, 'd' },
+ { "ed", no_argument, 0, 'e' },
+ { "forward-ed", no_argument, 0, 'f' },
+ { "ignore-matching-lines", required_argument, 0, 'I' },
+ { "ignore-case", no_argument, 0, 'i' },
+ { "paginate", no_argument, NULL, 'l' },
+ { "label", required_argument, 0, 'L' },
+ { "new-file", no_argument, 0, 'N' },
+ { "rcs", no_argument, 0, 'n' },
+ { "unidirectional-new-file", no_argument, 0, 'P' },
+ { "show-c-function", no_argument, 0, 'p' },
+ { "brief", no_argument, 0, 'q' },
+ { "recursive", no_argument, 0, 'r' },
+ { "report-identical-files", no_argument, 0, 's' },
+ { "starting-file", required_argument, 0, 'S' },
+ { "expand-tabs", no_argument, 0, 't' },
+ { "initial-tab", no_argument, 0, 'T' },
+ { "unified", optional_argument, 0, 'U' },
+ { "ignore-all-space", no_argument, 0, 'w' },
+ { "exclude", required_argument, 0, 'x' },
+ { "exclude-from", required_argument, 0, 'X' },
+ { "ignore-file-name-case", no_argument, NULL, OPT_IGN_FN_CASE },
+ { "no-ignore-file-name-case", no_argument, NULL, OPT_NO_IGN_FN_CASE },
+ { "normal", no_argument, NULL, OPT_NORMAL },
+ { "strip-trailing-cr", no_argument, NULL, OPT_STRIPCR },
+ { "tabsize", optional_argument, NULL, OPT_TSIZE },
+ { NULL, 0, 0, '\0'}
+};
+
+void usage(void) __dead2;
+void push_excludes(char *);
+void push_ignore_pats(char *);
+void read_excludes_file(char *file);
+void set_argstr(char **, char **);
+
+int
+main(int argc, char **argv)
+{
+ const char *errstr = NULL;
+ char *ep, **oargv;
+ long l;
+ int ch, dflags, lastch, gotstdin, prevoptind, newarg;
+
+ oargv = argv;
+ gotstdin = 0;
+ dflags = 0;
+ lastch = '\0';
+ prevoptind = 1;
+ newarg = 1;
+ diff_context = 3;
+ diff_format = 0;
+ while ((ch = getopt_long(argc, argv, OPTIONS, longopts, NULL)) != -1) {
+ switch (ch) {
+ case '0': case '1': case '2': case '3': case '4':
+ case '5': case '6': case '7': case '8': case '9':
+ if (newarg)
+ usage(); /* disallow -[0-9]+ */
+ else if (lastch == 'c' || lastch == 'u')
+ diff_context = 0;
+ else if (!isdigit(lastch) || diff_context > INT_MAX / 10)
+ usage();
+ diff_context = (diff_context * 10) + (ch - '0');
+ break;
+ case 'a':
+ dflags |= D_FORCEASCII;
+ break;
+ case 'b':
+ dflags |= D_FOLDBLANKS;
+ break;
+ case 'C':
+ case 'c':
+ cflag = 1;
+ diff_format = D_CONTEXT;
+ if (optarg != NULL) {
+ l = strtol(optarg, &ep, 10);
+ if (*ep != '\0' || l < 0 || l >= INT_MAX)
+ usage();
+ diff_context = (int)l;
+ }
+ break;
+ case 'd':
+ dflags |= D_MINIMAL;
+ break;
+ case 'D':
+ diff_format = D_IFDEF;
+ ifdefname = optarg;
+ break;
+ case 'e':
+ diff_format = D_EDIT;
+ break;
+ case 'f':
+ diff_format = D_REVERSE;
+ break;
+ case 'h':
+ /* silently ignore for backwards compatibility */
+ break;
+ case 'I':
+ push_ignore_pats(optarg);
+ break;
+ case 'i':
+ dflags |= D_IGNORECASE;
+ break;
+ case 'L':
+ if (label[0] == NULL)
+ label[0] = optarg;
+ else if (label[1] == NULL)
+ label[1] = optarg;
+ else
+ usage();
+ break;
+ case 'l':
+ lflag = 1;
+ break;
+ case 'N':
+ Nflag = 1;
+ break;
+ case 'n':
+ diff_format = D_NREVERSE;
+ break;
+ case 'p':
+ if (diff_format == 0)
+ diff_format = D_CONTEXT;
+ dflags |= D_PROTOTYPE;
+ break;
+ case 'P':
+ Pflag = 1;
+ break;
+ case 'r':
+ rflag = 1;
+ break;
+ case 'q':
+ diff_format = D_BRIEF;
+ break;
+ case 'S':
+ start = optarg;
+ break;
+ case 's':
+ sflag = 1;
+ break;
+ case 'T':
+ Tflag = 1;
+ break;
+ case 't':
+ dflags |= D_EXPANDTABS;
+ break;
+ case 'U':
+ case 'u':
+ diff_format = D_UNIFIED;
+ if (optarg != NULL) {
+ l = strtol(optarg, &ep, 10);
+ if (*ep != '\0' || l < 0 || l >= INT_MAX)
+ usage();
+ diff_context = (int)l;
+ }
+ break;
+ case 'w':
+ dflags |= D_IGNOREBLANKS;
+ break;
+ case 'X':
+ read_excludes_file(optarg);
+ break;
+ case 'x':
+ push_excludes(optarg);
+ break;
+ case OPT_IGN_FN_CASE:
+ ignore_file_case = 1;
+ break;
+ case OPT_NO_IGN_FN_CASE:
+ ignore_file_case = 0;
+ break;
+ case OPT_NORMAL:
+ diff_format = D_NORMAL;
+ break;
+ case OPT_TSIZE:
+ tabsize = (int) strtonum(optarg, 1, INT_MAX, &errstr);
+ if (errstr) {
+ warnx("Invalid argument for tabsize");
+ usage();
+ }
+ break;
+ case OPT_STRIPCR:
+ dflags |= D_STRIPCR;
+ break;
+ default:
+ usage();
+ break;
+ }
+ lastch = ch;
+ newarg = optind != prevoptind;
+ prevoptind = optind;
+ }
+ argc -= optind;
+ argv += optind;
+
+#ifdef __OpenBSD__
+ if (pledge("stdio rpath tmppath", NULL) == -1)
+ err(2, "pledge");
+#endif
+
+ /*
+ * Do sanity checks, fill in stb1 and stb2 and call the appropriate
+ * driver routine. Both drivers use the contents of stb1 and stb2.
+ */
+ if (argc != 2)
+ usage();
+ if (ignore_pats != NULL) {
+ char buf[BUFSIZ];
+ int error;
+
+ if ((error = regcomp(&ignore_re, ignore_pats,
+ REG_NEWLINE | REG_EXTENDED)) != 0) {
+ regerror(error, &ignore_re, buf, sizeof(buf));
+ if (*ignore_pats != '\0')
+ errx(2, "%s: %s", ignore_pats, buf);
+ else
+ errx(2, "%s", buf);
+ }
+ }
+ if (strcmp(argv[0], "-") == 0) {
+ fstat(STDIN_FILENO, &stb1);
+ gotstdin = 1;
+ } else if (stat(argv[0], &stb1) != 0)
+ err(2, "%s", argv[0]);
+ if (strcmp(argv[1], "-") == 0) {
+ fstat(STDIN_FILENO, &stb2);
+ gotstdin = 1;
+ } else if (stat(argv[1], &stb2) != 0)
+ err(2, "%s", argv[1]);
+ if (gotstdin && (S_ISDIR(stb1.st_mode) || S_ISDIR(stb2.st_mode)))
+ errx(2, "can't compare - to a directory");
+ set_argstr(oargv, argv);
+ if (S_ISDIR(stb1.st_mode) && S_ISDIR(stb2.st_mode)) {
+ if (diff_format == D_IFDEF)
+ errx(2, "-D option not supported with directories");
+ diffdir(argv[0], argv[1], dflags);
+ } else {
+ if (S_ISDIR(stb1.st_mode)) {
+ argv[0] = splice(argv[0], argv[1]);
+ if (stat(argv[0], &stb1) < 0)
+ err(2, "%s", argv[0]);
+ }
+ if (S_ISDIR(stb2.st_mode)) {
+ argv[1] = splice(argv[1], argv[0]);
+ if (stat(argv[1], &stb2) < 0)
+ err(2, "%s", argv[1]);
+ }
+ print_status(diffreg(argv[0], argv[1], dflags, 1), argv[0],
+ argv[1], "");
+ }
+ exit(status);
+}
+
+void
+set_argstr(char **av, char **ave)
+{
+ size_t argsize;
+ char **ap;
+
+ argsize = 4 + *ave - *av + 1;
+ diffargs = xmalloc(argsize);
+ strlcpy(diffargs, "diff", argsize);
+ for (ap = av + 1; ap < ave; ap++) {
+ if (strcmp(*ap, "--") != 0) {
+ strlcat(diffargs, " ", argsize);
+ strlcat(diffargs, *ap, argsize);
+ }
+ }
+}
+
+/*
+ * Read in an excludes file and push each line.
+ */
+void
+read_excludes_file(char *file)
+{
+ FILE *fp;
+ char *buf, *pattern;
+ size_t len;
+
+ if (strcmp(file, "-") == 0)
+ fp = stdin;
+ else if ((fp = fopen(file, "r")) == NULL)
+ err(2, "%s", file);
+ while ((buf = fgetln(fp, &len)) != NULL) {
+ if (buf[len - 1] == '\n')
+ len--;
+ pattern = xmalloc(len + 1);
+ memcpy(pattern, buf, len);
+ pattern[len] = '\0';
+ push_excludes(pattern);
+ }
+ if (strcmp(file, "-") != 0)
+ fclose(fp);
+}
+
+/*
+ * Push a pattern onto the excludes list.
+ */
+void
+push_excludes(char *pattern)
+{
+ struct excludes *entry;
+
+ entry = xmalloc(sizeof(*entry));
+ entry->pattern = pattern;
+ entry->next = excludes_list;
+ excludes_list = entry;
+}
+
+void
+push_ignore_pats(char *pattern)
+{
+ size_t len;
+
+ if (ignore_pats == NULL)
+ ignore_pats = xstrdup(pattern);
+ else {
+ /* old + "|" + new + NUL */
+ len = strlen(ignore_pats) + strlen(pattern) + 2;
+ ignore_pats = xreallocarray(ignore_pats, 1, len);
+ strlcat(ignore_pats, "|", len);
+ strlcat(ignore_pats, pattern, len);
+ }
+}
+
+void
+print_only(const char *path, size_t dirlen, const char *entry)
+{
+ if (dirlen > 1)
+ dirlen--;
+ printf("Only in %.*s: %s\n", (int)dirlen, path, entry);
+}
+
+void
+print_status(int val, char *path1, char *path2, const char *entry)
+{
+ switch (val) {
+ case D_BINARY:
+ printf("Binary files %s%s and %s%s differ\n",
+ path1, entry, path2, entry);
+ break;
+ case D_DIFFER:
+ if (diff_format == D_BRIEF)
*** DIFF OUTPUT TRUNCATED AT 1000 LINES ***
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