Add a script that converts K&R-style function definitions to ANSI style.
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Dag-Erling Smørgrav
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@ -8,6 +8,7 @@ the other categories.
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Please make a subdir per program, and add a brief description to this
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file.
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ansify Convert K&R-style function definitions to ANSI style
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ath Tools specific to the Atheros 802.11 support
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backout_commit A tool for reading in a commit message and generating
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a script that will backout the commit.
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6
tools/tools/ansify/Makefile
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6
tools/tools/ansify/Makefile
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@ -0,0 +1,6 @@
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# $FreeBSD$
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SCRIPTS= ansify.pl
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BINDIR?= /usr/local/bin
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.include <bsd.prog.mk>
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140
tools/tools/ansify/ansify.pl
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140
tools/tools/ansify/ansify.pl
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@ -0,0 +1,140 @@
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#!/usr/bin/perl -w
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#-
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# Copyright (c) 2005 Dag-Erling Coïdan Smørgrav
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# 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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# in this position and unchanged.
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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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#
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# THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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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# $FreeBSD$
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#
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use v5.6.0;
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use strict;
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sub ansify($$$) {
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my $ifh = shift;
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my $ofh = shift;
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my $fn = shift;
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my $line = 0;
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OUTER:
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while (<$ifh>) {
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# look for K&R-style function definitions
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if (m/^(\w+)\s*\(([\w,\s]+)\)$/) {
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my @saved = ($_);
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my $func = $1;
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my @args = split(/\s*,\s*/, $2);
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my $arglist = "";
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# capture K&R-style argument list
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while (<$ifh>) {
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push(@saved, $_);
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last if (m/^\{\s*$/);
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$arglist .= $_;
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}
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# remove comments (common in vfs code)
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$arglist =~ s/\/\*([^*]|\*[^\/])*\*\// /gs;
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# identify type of each argument
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my %type;
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foreach (split('\n', $arglist)) {
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s/\s+/ /g;
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if (!/^\s*([\w\s\*]+?)\s*(\w+?);\s*$/) {
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warn("[$fn:$line] $func(): can't parse argument list\n");
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print $ofh @saved;
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$line += @saved;
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next OUTER;
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}
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$type{$2} = $1;
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}
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# construct ANSI-style function definition
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my $repl = "$func(";
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foreach my $arg (@args) {
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# missing arguments in argument list
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if (!exists($type{$arg})) {
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warn("[$fn:$line] $func(): unknown type for '$arg' argument\n");
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print $ofh @saved;
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$line += @saved;
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next OUTER;
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}
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# $type{$arg} = "void *"
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# if $type{$arg} eq "caddr_t";
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$repl .= $type{$arg};
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$repl .= " "
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unless ($type{$arg} =~ m/\*$/);
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$repl .= $arg;
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$repl .= ", "
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unless $arg eq $args[-1];
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delete $type{$arg};
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}
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$repl .= ")";
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# extra arguments in argument list
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if (%type) {
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warn("[$fn:$line] $func(): too many arguments\n");
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print $ofh @saved;
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$line += @saved;
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next OUTER;
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}
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print $ofh "$repl\n";
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++$line;
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# warn about long lines so they can be fixed up manually
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warn("[$fn:$line] $func(): definition exceeds 80 characters\n")
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if length($repl) >= 80;
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print $ofh "{\n";
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++$line;
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} else {
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print $ofh $_;
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++$line;
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}
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}
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}
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sub ansify_file($) {
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my $fn = shift;
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my $tfn = "$fn.ansify";
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local *IN;
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local *OUT;
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if (open(IN, "<", $fn)) {
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if (open(OUT, ">", $tfn)) {
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ansify(*IN{IO}, *OUT{IO}, $fn);
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if (!rename($tfn, $fn)) {
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warn("$fn: $!\n");
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unlink($tfn);
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}
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} else {
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warn("$fn.ansify: $!\n");
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}
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} else {
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warn("$fn: $!\n");
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}
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}
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MAIN:{
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if (@ARGV) {
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foreach (@ARGV) {
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ansify_file($_);
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}
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} else {
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ansify(*STDIN{IO}, *STDOUT{IO}, "(stdin)");
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}
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}
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