NetBSD/dist/file/file2netbsd

#!/usr/pkg/bin/perl
#
#	$NetBSD: file2netbsd,v 1.1 2003/02/23 23:46:55 pooka Exp $
#
#  Perl script to convert a standard distribution directory for file 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 file by an
#	order of magnitude (or more?)
#
#  This script requires two environment variables set:
#	SRCDIR - file source directory
#	TARGETDIR - name of the high level directory to make
#
#  Written by Christos Zoulas July 17, 1997 for file-3.26
#

$version = "3.40";

# definitions ...

@subdirs = ("dist/file", "dist/file/magdir");


@filef = ("LEGAL.NOTICE", "MAINT",
	  "README", "apprentice.c", "ascmagic.c",
	  "compress.c", "file.c", "file.h", "fsmagic.c",
	  "is_tar.c", "names.h", "patchlevel.h",
	  "print.c", "readelf.c", "readelf.h", "softmagic.c", "tar.h");
#
# 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 %mansubst = ('__CSECTION__', '1',
                    '__FSECTION__', '5',
                    '__VERSION__', $version,
                    '__MAGIC__', '/usr/share/misc/magic');
    my $state = 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 =~ /magic.mime/) {
	print OFILE "#\t", '$', 'NetBSD', '$', "\n\n";
    }
    else {
	print OFILE '$', 'NetBSD', '$', "\n\n";
    }
    while (<IFILE>) {
	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\slint/) {
	    $state = 1;
	}
	foreach $key (@keywords) {
	    s/\$$key\$/$key/g;
	    s/\$$key:(.*)\$/$key:$1/g;
	}
	while (($from, $to) = each %mansubst) {
	    s/$from/$to/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 --> $t\n";
    &fixrcs("$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);

    print ODATA "SRCS=\t";
    $count = 0;
    while ($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 dist/file directory.\n";
&copyfiles ("$srcdir", "$targetdir/dist/file", @filef);
&copyfile("$srcdir/file.man", "$targetdir/dist/file/file.1");
&copyfile("$srcdir/magic.man", "$targetdir/dist/file/magic.5");
&copyfile("$srcdir/magic.mime", "$targetdir/dist/file/magic.mime");
system("cat $srcdir/Header > $targetdir/dist/file/Header");
system("cat $srcdir/Localstuff > $targetdir/dist/file/Localstuff");

print "Populating the dist/file/magdir directory.\n";
system("cp -rp $srcdir/Magdir/* $targetdir/dist/file/magdir; chmod -R ug+w $targetdir/dist/file/magdir");

#
# Sed transformations of files
#

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