freebsd-nq/sys/kern/makedevops.pl
Garrett Wollman a64d49d14f A Perl5 version of makedevops.sh. Fixes a bug in the sh/awk version
which really annoyed me at the time but I don't think bites me any
more.
1998-10-29 01:52:59 +00:00

222 lines
5.8 KiB
Perl

#!/usr/bin/perl -w
#
# Copyright (c) 1992, 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. 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.
#
# From @(#)vnode_if.sh 8.1 (Berkeley) 6/10/93
# From Id: makedevops.sh,v 1.1 1998/06/14 13:53:12 dfr Exp
# $Id$
#
use strict;
use IO::Handle;
use IO::File;
use Getopt::Std;
sub main {
my (%opts) = ('c' => 0, 'h' => 0);
my ($src, $cname, $hname, $tmp, $intname);
getopts('ch', \%opts);
if (!($opts{'c'} or $opts{'h'}) or $#ARGV != 0) {
&usage();
}
$cname = $ARGV[0];
$cname =~ s,^.*/([^/]+)$,$1,;
$hname = $cname;
$cname =~ s/\.m$/.c/;
$hname =~ s/\.m$/.h/;
$src = new IO::File "<$ARGV[0]";
defined($src)
or die "$0: $ARGV[0]: $!\n";
$tmp = IO::File->new_tmpfile();
defined($tmp)
or die "$0: creating temporary file: $!\n";
write_header($tmp, $ARGV[0]);
if ($opts{'c'}) {
print $tmp ("#include <sys/param.h>\n",
"#include <sys/queue.h>\n",
"#include <sys/bus_private.h>\n");
}
line:
while (<$src>) {
chomp;
if (/^\#\s*(if)|(else)|(elif)|(endif)|(include)/) {
if ($opts{'c'}) {
print $tmp ($_, "\n");
}
next line;
}
s/\#.*$//; # strip comments
next line if (/^\s*$/);
if (/^\s*INTERFACE\s+(\w+)\s*$/) {
$intname = $1;
if ($opts{'c'}) {
print $tmp "#include \"$hname\"\n\n";
} else {
print $tmp ("#ifndef _", $intname, "_if_h_\n",
"#define _", $intname, "_if_h_\n\n");
}
next line;
}
if (/^\s*METHOD\s+([a-zA-Z_0-9 *]+)\s+(\w+)\s*\{/) {
my ($ret, $name) = ($1, $2);
my (@args, $mname, $umname);
# Get the function arguments.
@args = ();
arg:
while (<$src>) {
chomp;
s/\#.*$//; # delete comments
last arg if (/^\s*\}\s*;/);
s/^\s+//; # strip leading whitespace
s/\s+$//; # strip trailing whitespace
s/;$//; # strip trailing semicolon
s/\s+/ /g; # squish internal whitespace to a single space
push(@args, $_);
}
$mname = $intname . '_' . $name;
$umname = uc $mname;
# Print out the method declaration
if ($opts{'h'}) {
print $tmp ("extern struct device_op_desc ", $mname,
"_desc;\n",
$ret, ' ', $umname, "(",
join(", ", @args),
");\n");
}
if ($opts{'c'}) {
# Print the method desc
print $tmp ("struct device_op_desc ", $mname, "_desc = {\n",
"\t0,\n",
"\t\"$mname\"\n",
"};\n\n");
# Print out the method typedef
print $tmp ("typedef ", $ret, ' ', $mname, "_t (",
join(", ", @args), ");\n");
# Print out the method itself
print $tmp ($ret, ' ', $umname, " (",
join(", ", @args), ")\n",
"{\n",
"\t", $mname, "_t *m = (", $mname, "_t *)",
"DEVOPMETH(dev, ", $mname, ");\n");
if ($ret eq 'void') {
print $tmp "\tm(";
} else {
print $tmp "\treturn m(";
}
print $tmp join(", ", map {&argname($_)} @args);
print $tmp ");\n}\n\n";
}
next line;
}
# should diagnose unrecognized input here
}
if ($opts{'h'}) {
print $tmp ("\n#endif /* _", $intname, "_if_h_ */\n");
}
compare_and_update($tmp, $opts{'c'} ? $cname : $hname);
exit 0;
}
&main;
sub argname {
my ($arg) = @_;
my (@words) = split(/\s+/, $arg);
my ($name) = pop @words;
$name =~ s/^\*+//;
return $name;
}
sub compare_and_update {
my ($oldfh, $newname) = @_;
my ($data1, $data2, $newfh);
defined($oldfh->seek(0, 0))
or die "$0: seek: $!\n";
$oldfh->input_record_separator(undef);
$data1 = <$oldfh>;
$newfh = new IO::File "<$newname";
if (defined($newfh)) {
$newfh->input_record_separator(undef);
$data2 = <$newfh>;
undef $newfh;
}
if (defined($data2) && $data1 eq $data2) {
printf STDERR "$0: $newname: unchanged\n";
return 0;
}
$newfh = new IO::File ">$newname";
die "$0: $newname: $!\n"
unless(defined $newfh);
print $newfh $data1;
return 0;
}
sub write_header {
my ($out, $in) = @_;
print $out <<EOH;
/*
* This file is produced automatically.
* Do not modify anything in here by hand.
*
* Created from $in with makedevops.pl
*/
EOH
}
sub usage {
print STDERR "$0: usage:\n\t$0 -c infile\n\t$0 -h infile\n";
exit 1;
}