NetBSD/lib/libpcap/pcap2netbsd

#!/usr/local/bin/perl
#
#	$NetBSD: pcap2netbsd,v 1.6 2004/09/22 19:35:47 dyoung Exp $
#
#  Perl script to convert a standard distribution directory for am-utils into
#	a NetBSD source tree.
#
#  This is done as a script so that as each distribution is released,
#	only changes from the previous one need to be dealt with as
#	modifications to this script and related files.  This should
#	reduce the cost of updating from a new release of xntp by an
#	order of magnitude (or more?)
#
#  This script requires two environment variables set:
#	SRCDIR - libpcap source directory
#	TARGETDIR - name of the high level directory to make
#
#  Written by Christos Zoulas Oct 2nd, 1997 for libpcap-0.4a3
#
#  Modified by David Young Sep 19th, 2004 for libpcap-0.8.3
#

$version = "0.8.3";

# definitions ...

@subdirs = ("lib/libpcap");



@libpcapf = ("bpf_dump.c", "bpf_image.c", "etherent.c", "fad-getad.c",
	     "gencode.c", "grammar.y", "inet.c", "nametoaddr.c", "optimize.c",
	     "pcap-bpf.c", "pcap.c", "savefile.c", "scanner.l");

@libpcaphf = ("pcap.h", "pcap-namedb.h");
@libpcapmf = ("pcap.3");
@libpcapdf = ("CHANGES", "README", "atmuni31.h", "llc.h", "pcap-bpf.h",
	      "pcap-int.h", "pcap-stdinc.h", "gencode.h", "ethertype.h",
	      "ppp.h", "sunatmpos.h");

# sed edit list: file, sed-program
%sedlist = (
    "lib/libpcap/scanner.l", "'s/tokdefs.h/grammar.h/g'"
);

#
# Utility Subroutines
#

sub makedir {
    system("mkdir -p @_");
}

# &fixrcs (fromfile, tofile);
sub fixrcs
{
    my ($f, $t) = @_;
    my @keywords = ("Author", "Date", "Header", "Id", "Locker", "Log",
		    "Name", "RCSfile", "Revision", "Source", "State");
    my $state = 0;
    my $hdr = 0;

    open(IFILE, "<$f") || die "Cannot open $f";
    open(OFILE, ">$t") || die "Cannot create $t";

    if ($t =~ /.*\.[0-9]$/) {
	print OFILE '.\\" $', 'NetBSD',  '$', "\n.\\", "\n";
    }
    elsif ($t =~ /.*\.[ch]$/) {
	print OFILE "/*\t", '$', 'NetBSD', '$', "\t*/\n\n";
    }
    elsif ($t =~ /.*\.[yl]$/) {
	$hdr = 1;
    }
    else {
	print OFILE '$', 'NetBSD', '$', "\n";
    }
    while (<IFILE>) {
	if ($hdr == 1) {
	    if (/%{/) {
		print OFILE "%{\n/*\t", '$', 'NetBSD', '$', "\t*/\n\n";
		$hdr = 0;
		next;
	    }
	}
	if ($state == 2) {
	    if (/#endif/) {
		print OFILE "#else\n__RCSID(", '"$', 'NetBSD', '$"',
		    ");\n#endif\n";
		$state = 0;
	    }
	}
	if ($state == 1) {
	    print OFILE "#if 0\n";
	    $state = 2;
	}
	if (/#ifndef lint/) {
	    print OFILE "#include <sys/cdefs.h>\n";
	    $state = 1;
	}
	foreach $key (@keywords) {
	    s/\$$key\$/$key/g;
	    s/\$$key:(.*)\$/$key:$1/g;
	}
	print OFILE $_;
    }
    close(IFILE) || die "closing input file";
    close(OFILE) || die "closing output file";
}

# &copyfiles (fromdir, todir, list of files);
sub copyfiles {
    local ($fdir, $tdir, @list) = @_;
    local ($f);

    foreach $f (@list) {
	print "  $fdir/$f --> $tdir/$f\n";
	&fixrcs("$fdir/$f", "$tdir/$f");
    }
}

# &copyfile (fromfile, tofile);
sub copyfile {
    local ($f, $t) = @_;

    print "  $f --> $t\n";
    system ("cp $f $t");
}

sub uniq {
    local (@inlist) = @_;
    local (@outlist);

    @outlist = ($inlist[0]);
    for ( $i=1; $i < @inlist; $i++ ) {
	if ($inlist[$i] ne $inlist[$i-1]) {
	    push (@outlist, $inlist[$i]);
	}
    }

    @outlist;
}

sub dumpsrcs {
    local (@names) = @_;
    local ($count);

    $count = 0;
    while ($f = pop(@names)) {
        print ODATA "$f ";
	if ($count == 5 && @names > 0) {
	    print ODATA "\\\n";
	    $count = 0;
	} else {
	    $count += 1;
	}
    }
    if ($count != 0) {
	print ODATA "\n";
    }
}

#
# Main progarm.
#

$srcdir = $ENV{'SRCDIR'};
$targetdir = $ENV{'TARGETDIR'};
$incdirs = "-I. -I$srcdir/config -I$srcdir";

if (!$srcdir | !targetdir) {
    die "You must define the environment variables SRCDIR and TARGETDIR.\n"
}
print "Making the NetBSD directory tree.\n";
foreach $f (@subdirs) {
    print "   -->$f\n";
    makedir ("$targetdir/$f");
}

print "Populating the lib/libpcap directory.\n";
&copyfiles ("$srcdir", "$targetdir/lib/libpcap", @libpcapf, @libpcaphf, @libpcapdf, @libpcapmf);

#
# Build makefiles
#

$first = "True";
while ($line = <DATA>) {
    chop ($line);
    if (substr($line,0,2) eq "%%") {
	@cmd = split (/ /,$line);
	if ($cmd[1] eq "file") {
	    print "Building $targetdir/$cmd[2]\n";
	    if ($first eq "") {
		close (ODATA);
	    } else {
		$first = "";
	    }
	    open (ODATA, ">$targetdir/$cmd[2]") ||
		die "Could not create $targetdir/$cmd[2]";
	} elsif ($cmd[1] eq "srcs") {
	    print "  Defining SRCS\n";
	    if ($first) {
		die "Data file must start with a %% file!";
	    }
	    print ODATA "SRCS=\t";
	    &dumpsrcs (@libpcapf);
	} elsif ($cmd[1] eq "incs") {
	    print "  Defining INCS\n";
	    if ($first) {
		die "Data file must start with a %% file!";
	    }
	    print ODATA "INCS=\t";
	    &dumpsrcs (@libpcaphf);
	} elsif ($cmd[1] eq "man") {
	    print "  Defining MAN\n";
	    if ($first) {
		die "Data file must start with a %% file!";
	    }
	    print ODATA "MAN=\t";
	    &dumpsrcs (@libpcapmf);
	} elsif ($cmd[1] eq "version") {
	    print "  Defining VERSION\n";
	    print ODATA "char pcap_version[] = \"$version\";";
	} elsif ($cmd[1] eq "NetBSD") {
	    if ($first) {
		die "Data section must start with a %% file!";
	    }
	    print ODATA "$cmd[2]	\$"."NetBSD".": \$	$cmd[3]\n";
	}
    } else {
	if ($first) {
	    die "Data file must start with a %% file!";
	}
	print ODATA "$line\n";
    }
}
close (ODATA);

#
# Sed transformations of files
#
foreach $n (keys(%sedlist)) {
    print "Modifying $n\n";
    system ("cd $targetdir; sed $sedlist{$n} $n > tmp;  mv -f tmp $n");
}

#
# end of the script
#

# what follows is the data for makefiles and other special files
# that need to be created.

__END__
%% file lib/libpcap/Makefile
%% NetBSD #

LIB=	pcap
%% man

LEX=	flex

CFLAGS+=-I. -I${.CURDIR} -DYYBISON
CFLAGS+=-DHAVE_MALLOC_H=1 -DHAVE_SYS_IOCCOM_H=1 -DHAVE_SYS_SOCKIO_H=1
CFLAGS+=-DHAVE_ETHER_HOSTTON=1 -DHAVE_STRERROR=1 -DHAVE_SOCKADDR_SA_LEN=1
CFLAGS+=-DLBL_ALIGN=1
LFLAGS+=-olex.yy.c -Ppcap_
YFLAGS+=-ppcap_
YHEADER=1

%% srcs
SRCS+=	bpf_filter.c version.c

.PATH:	${.CURDIR}/../../sys/net

%% incs
INCSDIR=/usr/include

scanner.c: grammar.h

.include <bsd.lib.mk>
%% file lib/libpcap/shlib_version
major=0
minor=0
%% file lib/libpcap/version.c
%% NetBSD /* */
%% version