mirror of
git://git.sv.gnu.org/coreutils.git
synced 2026-03-03 03:25:26 +02:00
135 lines
3.5 KiB
Perl
135 lines
3.5 KiB
Perl
#!/usr/bin/perl -w
|
|
# Derive #define directives from specially formatted `case ...:' statements.
|
|
|
|
# Copyright (C) 2003, 2005, 2009-2011 Free Software Foundation, Inc.
|
|
|
|
# This program is free software: you can redistribute it and/or modify
|
|
# it under the terms of the GNU General Public License as published by
|
|
# the Free Software Foundation, either version 3 of the License, or
|
|
# (at your option) any later version.
|
|
|
|
# This program is distributed in the hope that it will be useful,
|
|
# but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
# GNU General Public License for more details.
|
|
|
|
# You should have received a copy of the GNU General Public License
|
|
# along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
use strict;
|
|
|
|
use Getopt::Long;
|
|
|
|
(my $VERSION = '$Revision: 1.5 $ ') =~ tr/[0-9].//cd;
|
|
(my $ME = $0) =~ s|.*/||;
|
|
|
|
END
|
|
{
|
|
# Nobody ever checks the status of print()s. That's okay, because
|
|
# if any do fail, we're guaranteed to get an indicator when we close()
|
|
# the filehandle.
|
|
#
|
|
# Close stdout now, and if there were no errors, return happy status.
|
|
# If stdout has already been closed by the script, though, do nothing.
|
|
defined fileno STDOUT
|
|
or return;
|
|
close STDOUT
|
|
and return;
|
|
|
|
# Errors closing stdout. Indicate that, and hope stderr is OK.
|
|
warn "$ME: closing standard output: $!\n";
|
|
|
|
# Don't be so arrogant as to assume that we're the first END handler
|
|
# defined, and thus the last one invoked. There may be others yet
|
|
# to come. $? will be passed on to them, and to the final _exit().
|
|
#
|
|
# If it isn't already an error, make it one (and if it _is_ an error,
|
|
# preserve the value: it might be important).
|
|
$? ||= 1;
|
|
}
|
|
|
|
sub usage ($)
|
|
{
|
|
my ($exit_code) = @_;
|
|
my $STREAM = ($exit_code == 0 ? *STDOUT : *STDERR);
|
|
if ($exit_code != 0)
|
|
{
|
|
print $STREAM "Try `$ME --help' for more information.\n";
|
|
}
|
|
else
|
|
{
|
|
print $STREAM <<EOF;
|
|
Usage: $ME [OPTIONS] FILE
|
|
|
|
FIXME: describe
|
|
|
|
OPTIONS:
|
|
|
|
Derive #define directives from specially formatted `case ...:' statements.
|
|
|
|
--help display this help and exit
|
|
--version output version information and exit
|
|
|
|
EOF
|
|
}
|
|
exit $exit_code;
|
|
}
|
|
|
|
{
|
|
GetOptions
|
|
(
|
|
help => sub { usage 0 },
|
|
version => sub { print "$ME version $VERSION\n"; exit },
|
|
) or usage 1;
|
|
|
|
my $fail = 0;
|
|
|
|
@ARGV < 1
|
|
and (warn "$ME: missing FILE arguments\n"), $fail = 1;
|
|
1 < @ARGV
|
|
and (warn "$ME: too many arguments\n"), $fail = 1;
|
|
$fail
|
|
and usage 1;
|
|
|
|
my $file = $ARGV[0];
|
|
|
|
open FH, $file
|
|
or die "$ME: can't open `$file' for reading: $!\n";
|
|
|
|
# For each line like this:
|
|
# case S_MAGIC_ROMFS: /* 0x7275 */
|
|
# emit one like this:
|
|
# # define S_MAGIC_ROMFS 0x7275
|
|
# Fail if there is a `case S_MAGIC_.*' line without
|
|
# a properly formed comment.
|
|
|
|
print <<EOF;
|
|
/* Define the magic numbers as given by statfs(2).
|
|
Please send additions to bug-coreutils\@gnu.org and meskes\@debian.org.
|
|
This file is generated automatically from $file. */
|
|
|
|
#if defined __linux__
|
|
EOF
|
|
|
|
while (defined (my $line = <FH>))
|
|
{
|
|
$line =~ /^[ \t]+case S_MAGIC_/
|
|
or next;
|
|
$line =~ m!^[ \t]+case (S_MAGIC_\w+): /\* (0x[0-9A-Fa-f]+) \*/$!
|
|
or (warn "$ME:$file:$.: malformed case S_MAGIC_... line"),
|
|
$fail = 1, next;
|
|
my $name = $1;
|
|
my $value = $2;
|
|
print "# define $name $value\n";
|
|
}
|
|
|
|
print <<\EOF;
|
|
#elif defined __GNU__
|
|
# include <hurd/hurd_types.h>
|
|
#endif
|
|
EOF
|
|
close FH;
|
|
|
|
exit $fail;
|
|
}
|