/usr/share/doc/libparse-recdescent-perl/examples/demo_restructure_painful.pl is in libparse-recdescent-perl 1.967009+dfsg-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 | #!/usr/bin/perl -w
# CONVERT FROM ONE EXTERNAL STRUCTURE TO A
# SLIGHTLY DIFFERENT INTERNAL STRUCTURE
#
# RETURNING NESTED LISTS AND THEN MUNGING THEM IS PAINFUL
# SEE demo_restructure_easy.pl FOR A BETTER TECHNIQUE
use strict;
use Parse::RecDescent;
use Data::Dumper;
my $grammar = q(
{
sub consolidate {
my $aref = shift;
my @a = @{$aref};
my %new = ();
foreach my $a (@a) {
my %h = %{$a};
foreach my $k (keys %h) {
if (ref($h{$k})) {
foreach my $k2 (keys %{$h{$k}}) {
$new{$k}->{$k2} = $h{$k}->{$k2};
}
} else {
$new{$k} = $h{$k};
}
}
}
return \%new;
}
}
file: section(s)
{ $return = consolidate($item[1]) }
section: header '{' body '}'
{ $return = { $item[1] => $item[3] } }
header: 'Domain=' /.+/
{ $return = $item[2] }
body: line(s)
{ $return = consolidate($item[1]) }
line: lineA | lineB
{ $return = $item[1] }
lineA: /[^\W_]+/ '=' /.+/
{ $return = { $item[1] => $item[3] } }
lineB: /[^\W_]+/ '_' /[^\W_]+/ '=' /.+/
{ $return = { $item[1] => { $item[3] => $item[5] } } }
);
my $parser = Parse::RecDescent->new($grammar);
my $text;
my @text = <DATA>;
foreach (@text)
{
next if /^\#/; # Strip comments
$text .= $_;
}
my $f = $parser->file($text);
print Dumper ($f);
__DATA__
#
#
Domain=domain1
{
P1_Name=n1
P1_Address=host1:port1
P2_Name=n2
P2_Address=host2:port2
}
Domain=domain2
{
f1=v1
f2=v2a v2b
#comment
}
|