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# ex:ts=8 sw=4:
# $OpenBSD: Mtree.pm,v 1.13 2014/03/18 18:53:29 espie Exp $
#
# Copyright (c) 2004-2005 Marc Espie <espie@openbsd.org>
#
# Permission to use, copy, modify, and distribute this software for any
# purpose with or without fee is hereby granted, provided that the above
# copyright notice and this permission notice appear in all copies.
#
# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
use strict;
use warnings;
package OpenBSD::Mtree;
use File::Spec;
# read an mtree file, and produce the corresponding directory hierarchy
sub parse_fh
{
my ($mtree, $basedir, $fh, $h) = @_;
while(<$fh>) {
chomp;
s/^\s*//o;
next if /^\#/o || /^\//o;
s/\s.*$//o;
next if /^$/o;
if ($_ eq '..') {
$basedir =~ s|/[^/]*$||o;
next;
} elsif (m/^\//) {
$basedir = $_;
} else {
$basedir.="/$_";
}
$_ = $basedir;
while (s|/\./|/|o) {}
if (defined $h) {
$mtree->{File::Spec->canonpath($_)} //= {};
} else {
$mtree->{File::Spec->canonpath($_)} = 1;
}
}
}
sub parse
{
my ($mtree, $basedir, $filename, $h) = @_;
open my $file, '<', $filename or die "can't open $filename: $!";
parse_fh($mtree, $basedir, $file, $h);
close $file;
}
1;
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