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package Data::Printer::Filter::HASH;
use strict;
use warnings;
use Data::Printer::Filter;
use Data::Printer::Common;
use Scalar::Util ();
filter 'HASH' => \&parse;
sub parse {
my ($hash_ref, $ddp) = @_;
my $tied = '';
if ($ddp->show_tied and my $tie = ref tied %$hash_ref) {
$tied = " (tied to $tie)";
}
return $ddp->maybe_colorize('{', 'brackets')
. ' ' . $ddp->maybe_colorize('...', 'hash')
. ' ' . $ddp->maybe_colorize('}', 'brackets')
. $tied
if $ddp->max_depth && $ddp->current_depth >= $ddp->max_depth;
my @src_keys = keys %$hash_ref;
return $ddp->maybe_colorize('{}', 'brackets') . $tied unless @src_keys;
@src_keys = Data::Printer::Common::_nsort(@src_keys) if $ddp->sort_keys;
my $len = 0;
my $align_keys = $ddp->multiline && $ddp->align_hash;
my @i = Data::Printer::Common::_fetch_indexes_for(\@src_keys, 'hash', $ddp);
my %processed_keys;
# first pass, preparing keys and getting largest key size:
foreach my $idx (@i) {
next if ref $idx;
my $raw_key = $src_keys[$idx];
my $colored_key = Data::Printer::Common::_process_string($ddp, $raw_key, 'hash');
my $new_key = Data::Printer::Common::_colorstrip($colored_key);
if (_needs_quote($ddp, $raw_key, $new_key)) {
my $quote_char = $ddp->scalar_quotes;
# foo'bar ==> 'foo\'bar'
if (index($new_key, $quote_char) >= 0) {
$new_key =~ s{$quote_char}{\\$quote_char}g;
$colored_key =~ s{$quote_char}{\\$quote_char}g;
}
$new_key = $quote_char . $new_key . $quote_char;
$colored_key = $ddp->maybe_colorize($quote_char, 'quotes')
. $colored_key
. $ddp->maybe_colorize($quote_char, 'quotes')
;
}
$processed_keys{$idx} = {
raw => $raw_key,
colored => $colored_key,
nocolor => $new_key,
};
if ($align_keys) {
my $l = length $new_key;
$len = $l if $l > $len;
}
}
# second pass, traversing and rendering:
$ddp->indent;
my $total_keys = scalar @i; # yes, counting messages so ',' appear in between.
#keys %processed_keys;
my $string = $ddp->maybe_colorize('{', 'brackets');
foreach my $idx (@i) {
$total_keys--;
# $idx is a message to display, not a real index
if (ref $idx) {
$string .= $ddp->newline . $$idx;
next;
}
my $key = $processed_keys{$idx};
my $original_varname = $ddp->current_name;
# update 'var' to 'var{key}':
$ddp->current_name(
$original_varname
. ($ddp->arrows eq 'all' || ($ddp->arrows eq 'first' && $ddp->current_depth == 1) ? '->' : '')
. '{' . $key->{nocolor} . '}'
);
my $padding = $len - length($key->{nocolor});
$padding = 0 if $padding < 0;
$string .= $ddp->newline
. $key->{colored}
. (' ' x $padding)
. $ddp->maybe_colorize($ddp->hash_separator, 'separator')
;
# scalar references should be re-referenced to gain
# a '\' in front of them.
my $ref = ref $hash_ref->{$key->{raw}};
if ( $ref && $ref eq 'SCALAR' ) {
$string .= $ddp->parse(\$hash_ref->{ $key->{raw} });
}
elsif ( $ref && $ref ne 'REF' ) {
$string .= $ddp->parse( $hash_ref->{ $key->{raw} });
} else {
$string .= $ddp->parse(\$hash_ref->{ $key->{raw} });
}
$string .= $ddp->maybe_colorize($ddp->separator, 'separator')
if $total_keys > 0 || $ddp->end_separator;
# restore var name back to "var"
$ddp->current_name($original_varname);
}
$ddp->outdent;
$string .= $ddp->newline . $ddp->maybe_colorize('}', 'brackets');
return $string . $tied;
};
#######################################
### Private auxiliary helpers below ###
#######################################
sub _needs_quote {
my ($ddp, $raw_key, $new_key) = @_;
my $quote_keys = $ddp->quote_keys;
my $scalar_quotes = $ddp->scalar_quotes;
return 0 unless defined $quote_keys && defined $scalar_quotes;;
if ($quote_keys eq 'auto'
&& $raw_key eq $new_key
&& $new_key !~ /\s|\r|\n|\t|\f/) {
return 0;
}
return 1;
}
1;
|
