/usr/share/perl5/Petal/Hash.pm is in libpetal-perl 2.23-2.
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 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 | package Petal::Hash;
use strict;
use warnings;
use Carp;
our $MODIFIERS = {};
# import all plugins once
foreach my $include_dir (@INC)
{
my $dir = "$include_dir/Petal/Hash";
if (-e $dir and -d $dir)
{
opendir DD, $dir or do {
warn "Cannot open directory $dir. Reason: $!";
next;
};
my @modules = map { s/\.pm$//; $_ }
grep /\.pm$/,
grep !/^\./,
readdir (DD);
closedir DD;
foreach my $module (@modules)
{
$module =~ /^(\w+)$/;
$module = $1;
eval "use Petal::Hash::$module";
$@ and warn "Cannot import module $module. Reason: $@";
$MODIFIERS->{lc ($module) . ':'} = "Petal::Hash::$module";
}
}
}
# set modifier
$MODIFIERS->{'set:'} = sub {
my $hash = shift;
my $argument = shift;
my @split = split /\s+/, $argument;
my $set = shift (@split) or confess "bad syntax for 'set:': $argument (\$set)";
my $value = $hash->fetch (join ' ', @split);
$hash->{$set} = $value;
delete $hash->{__petal_hash_cache__}->{$set};
return '';
};
$MODIFIERS->{'def:'} = $MODIFIERS->{'set:'};
$MODIFIERS->{'define:'} = $MODIFIERS->{'set:'};
# true modifier
$MODIFIERS->{'true:'} = sub {
my $hash = shift;
my $variable = $hash->fetch (@_);
return unless (defined $variable);
(scalar @{$variable}) ? return 1 : return
if (ref $variable eq 'ARRAY' or (ref $variable and $variable =~ /=ARRAY\(/));
($variable) ? return 1 : return;
};
# false modifier
$MODIFIERS->{'false:'} = sub {
my $hash = shift;
my $variable = join ' ', @_;
return not $hash->fetch ("true:$variable");
};
$MODIFIERS->{'not:'} = $MODIFIERS->{'false:'};
# encode: modifier (deprecated stuff)
$MODIFIERS->{'encode:'} = sub {
warn "Petal modifier encode: is deprecated";
my $hash = shift;
my $argument = shift;
return $hash->fetch ($argument);
};
$MODIFIERS->{'xml:'} = $MODIFIERS->{'encode:'};
$MODIFIERS->{'html:'} = $MODIFIERS->{'encode:'};
$MODIFIERS->{'encode_html:'} = $MODIFIERS->{'encode:'};
# Instanciates a new Petal::Hash object which should
# be tied to a hash.
sub new
{
my $thing = shift;
my $self = (ref $thing) ?
bless { %{$thing} }, ref $thing :
bless { @_ }, $thing;
$self->{__petal_hash_cache__} = {};
return $self;
}
# Gets a value...
sub get
{
my $self = shift;
my $key = shift;
my $fresh = $key =~ s/^\s*fresh\s+//;
delete $self->{__petal_hash_cache__}->{$key} if ($fresh);
exists $self->{__petal_hash_cache__}->{$key} and return $self->{__petal_hash_cache__}->{$key};
my $res = undef;
if ($Petal::HTML_ERRORS)
{
$res = eval { $self->__FETCH ($key) };
$@ and return "[ Cannot fetch $key. <!-- $@ --> ]";
}
else
{
$res = $self->__FETCH ($key);
}
$self->{__petal_hash_cache__}->{$key} = $res;
return $res;
}
sub get_encoded
{
my $self = shift;
my $key = shift;
my $res = $self->get ($key);
return unless (defined $res);
my $no_encode = $key =~ s/^\s*structure\s+//;
unless ($no_encode and $no_encode)
{
$res =~ s/\&/\&/g;
$res =~ s/\</\</g;
$res =~ s/\"/\"/g;
}
return $res;
}
sub delete_cached
{
my $self = shift;
my $regex = shift;
for (keys %{$self->{__petal_hash_cache__}})
{
/$regex/ and delete $self->{__petal_hash_cache__}->{$_};
}
}
sub __FETCH
{
my $self = shift;
my $key = shift;
my $no_encode = $key =~ s/^\s*structure\s+//;
if (defined $no_encode and $no_encode)
{
return $self->fetch ($key);
}
else
{
# can anyone explain why keys beginning with 'text' are not allowed???
$key =~ s/^\s*text\s*//;
return $self->fetch ($key);
}
}
# this method fetches a Petal expression and returns it
# without XML encoding. FETCH is basically a wrapper around
# fetch() which looks for the special keyword 'structure'.
sub fetch
{
my $self = shift;
my $key = shift;
my $mod = $self->_fetch_mod ($key);
$key =~ s/^\Q$mod\E//;
$key =~ s/^\s+//;
my $module = $MODIFIERS->{$mod} || confess "$mod is not a known modifier";
(defined $module and ref $module and ref $module eq 'CODE') and return $module->($self, $key);
$module->process ($self, $key);
}
sub _fetch_mod
{
my $self = shift;
my $key = shift;
my ($mod) = $key =~ /^([A-Za-z0-9_-]+?\:).*/;
defined $mod || return 'var:';
return $mod;
}
1;
__END__
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