89 lines
2.1 KiB
Perl
89 lines
2.1 KiB
Perl
# $OpenBSD: LaLoFile.pm,v 1.1 2010/12/05 16:37:50 espie Exp $
|
|
|
|
# Copyright (c) 2007-2010 Steven Mestdagh <steven@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;
|
|
use feature qw(say switch state);
|
|
|
|
package LaLoFile;
|
|
my %file_cache; # which files have been parsed
|
|
my $cache_by_fullname = {};
|
|
my $cache_by_inode = {};
|
|
|
|
# allows special treatment for some keywords
|
|
sub set
|
|
{
|
|
my ($self, $k, $v) = @_;
|
|
|
|
$self->{$k} = $v;
|
|
}
|
|
|
|
sub stringize
|
|
{
|
|
my ($self, $k) = @_;
|
|
if (defined $self->{$k}) {
|
|
return $self->{$k};
|
|
}
|
|
return '';
|
|
}
|
|
|
|
sub read
|
|
{
|
|
my ($class, $filename) = @_;
|
|
my $info = $class->new;
|
|
open(my $fh, '<', $filename) or die "Cannot read $filename: $!\n";
|
|
my $_;
|
|
while (<$fh>) {
|
|
chomp;
|
|
next if /^\#/;
|
|
next if /^\s*$/;
|
|
if (m/^(\S+)\=\'(.*)\'$/) {
|
|
$info->set($1, $2);
|
|
} elsif (m/^(\S+)\=(\S+)$/) {
|
|
$info->set($1, $2);
|
|
}
|
|
}
|
|
return $info;
|
|
}
|
|
|
|
sub parse
|
|
{
|
|
my ($class, $filename) = @_;
|
|
|
|
Trace::debug {"parsing $filename"};
|
|
|
|
if (defined $cache_by_fullname->{$filename}) {
|
|
Trace::debug {" (cached)\n"};
|
|
return $cache_by_fullname->{$filename};
|
|
}
|
|
my $key = join("/", (stat $filename)[0,1]);
|
|
if (defined $cache_by_inode->{$key}) {
|
|
Trace::debug {" (cached)\n"};
|
|
return $cache_by_inode->{$key};
|
|
}
|
|
Trace::debug {"\n"};
|
|
return $cache_by_inode->{$key} = $cache_by_fullname->{$filename} =
|
|
$class->read($filename);
|
|
}
|
|
|
|
sub new
|
|
{
|
|
my $class = shift;
|
|
bless {}, $class;
|
|
}
|
|
|
|
1;
|