File Coverage

blib/lib/Dist/Zilla/Chrome/Term.pm

Criterion	Covered	Total	%
statement	34	101	33.6
branch	3	36	8.3
condition	2	22	9.0
subroutine	9	20	45.0
pod	0	3	0.0
total	48	182	26.3

package Dist::Zilla::Chrome::Term 6.030;
# ABSTRACT: chrome used for terminal-based interaction

use Moose;

use Dist::Zilla::Pragmas;

use Digest::MD5 qw(md5);
use Dist::Zilla::Types qw(OneZero);
use Encode ();
use Log::Dispatchouli 1.102220;

use namespace::autoclean;

#pod =head1 OVERVIEW
#pod
#pod This class provides a L<Dist::Zilla::Chrome> implementation for use in a
#pod terminal environment.  It's the default chrome used by L<Dist::Zilla::App>.
#pod
#pod =cut

sub _str_color {
  my ($str) = @_;

  state %color_for;

  # I know, I know, this is ludicrous, but guess what?  It's my Sunday and I
  # can spend it how I want.
  state $max = ($ENV{COLORTERM}//'') eq 'truecolor' ? 255 : 5;
  state $min = $max == 255 ? 384 : 5;
  state $inc = $max == 255 ?  16 : 1;
  state $fmt = $max == 255 ? 'r%ug%ub%u' : 'rgb%u%u%u';

  return $color_for{$str} //= do {
    my @rgb = map { $_ % $max } unpack 'CCC', md5($str);

    my $i = ($rgb[0] + $rgb[1] + $rgb[2]) % 3;
    while (1) {
      last if $rgb[0] + $rgb[1] + $rgb[2] >= $min;

      my $next = $i++ % 3;

      $rgb[$next] = abs($max - $rgb[$next]);
    }

    sprintf $fmt, @rgb;
  }
}

has logger => (
  is  => 'ro',
  isa => 'Log::Dispatchouli',
  init_arg => undef,
  writer   => '_set_logger',
  lazy => 1,
  builder => '_build_logger',
);

sub _build_logger {
  my $self = shift;
  my $enc = $self->term_enc;

  if ($enc && Encode::resolve_alias($enc)) {
    my $layer = sprintf(":encoding(%s)", $enc);
    binmode( STDOUT, $layer );
    binmode( STDERR, $layer );
  }

  my $logger = Log::Dispatchouli->new({
    ident     => 'Dist::Zilla',
    to_stdout => 1,
    log_pid   => 0,
    to_self   => ($ENV{DZIL_TESTING} ? 1 : 0),
    quiet_fatal => 'stdout',
  });

  my $use_color = $ENV{DZIL_COLOR} // -t *STDOUT;

  if ($use_color) {
    my $stdout = $logger->{dispatcher}->output('stdout');

    $stdout->add_callback(sub {
      require Term::ANSIColor;
      my $message = {@_}->{message};
      return $message unless $message =~ s/\A\[([^\]]+)] //;
      my $prefix = $1;
      return sprintf "[%s] %s",
        Term::ANSIColor::colored([ _str_color($prefix) ], $prefix),
        $message;
    });
  }

  return $logger;
}

has term_ui => (
  is   => 'ro',
  isa  => 'Object',
  lazy => 1,
  default => sub {
    require Term::ReadLine;
    require Term::UI;
    Term::ReadLine->new('dzil')
  },
);

has term_enc => (
  is   => 'ro',
  lazy => 1,
  default => sub {
    require Term::Encoding;
    return Term::Encoding::get_encoding();
  },
);

sub prompt_str {
  my ($self, $prompt, $arg) = @_;
  $arg ||= {};
  my $default = $arg->{default};
  my $check   = $arg->{check};

  require Encode;
  my $term_enc = $self->term_enc;

  my $encode = $term_enc
             ? sub { Encode::encode($term_enc, shift, Encode::FB_CROAK())  }
             : sub { shift };
  my $decode = $term_enc
             ? sub { Encode::decode($term_enc, shift, Encode::FB_CROAK())  }
             : sub { shift };

  if ($arg->{noecho}) {
    require Term::ReadKey;
    Term::ReadKey::ReadMode('noecho');
  }
  my $input_bytes = $self->term_ui->get_reply(
    prompt => $encode->($prompt),
    allow  => $check || sub { length $_[0] },
    (defined $default
      ? (default => $encode->($default))
      : ()
    ),
  );
  if ($arg->{noecho}) {
    Term::ReadKey::ReadMode('normal');
    # The \n ending user input disappears under noecho; this ensures
    # the next output ends up on the next line.
    print "\n";
  }

  my $input = $decode->($input_bytes);
  chomp $input;

  return $input;
}

sub prompt_yn {
  my ($self, $prompt, $arg) = @_;
  $arg ||= {};
  my $default = $arg->{default};

  if (! $self->_isa_tty) {
    if (defined $default) {
      return OneZero->coerce($default);
    }

    $self->logger->log_fatal(
      "want interactive input, but terminal doesn't appear interactive"
    );
  }

  my $input = $self->term_ui->ask_yn(
    prompt  => $prompt,
    (defined $default ? (default => OneZero->coerce($default)) : ()),
  );

  return $input;
}

sub _isa_tty {
  my $isa_tty = -t STDIN && (-t STDOUT || !(-f STDOUT || -c STDOUT));
  return $isa_tty;
}

sub prompt_any_key {
  my ($self, $prompt) = @_;
  $prompt ||= 'press any key to continue';

  my $isa_tty = $self->_isa_tty;

  if ($isa_tty) {
    local $| = 1;
    print $prompt;

    require Term::ReadKey;
    Term::ReadKey::ReadMode('cbreak');
    Term::ReadKey::ReadKey(0);
    Term::ReadKey::ReadMode('normal');
    print "\n";
  }
}

with 'Dist::Zilla::Role::Chrome';

__PACKAGE__->meta->make_immutable;
1;

__END__

=pod

=encoding UTF-8

=head1 NAME

Dist::Zilla::Chrome::Term - chrome used for terminal-based interaction

=head1 VERSION

version 6.030

=head1 OVERVIEW

This class provides a L<Dist::Zilla::Chrome> implementation for use in a
terminal environment.  It's the default chrome used by L<Dist::Zilla::App>.

=head1 PERL VERSION

This module should work on any version of perl still receiving updates from
the Perl 5 Porters.  This means it should work on any version of perl released
in the last two to three years.  (That is, if the most recently released
version is v5.40, then this module should work on both v5.40 and v5.38.)

Although it may work on older versions of perl, no guarantee is made that the
minimum required version will not be increased.  The version may be increased
for any reason, and there is no promise that patches will be accepted to lower
the minimum required perl.

=head1 AUTHOR

Ricardo SIGNES 😏 <[e-mail]>

=head1 COPYRIGHT AND LICENSE

This software is copyright (c) 2023 by Ricardo SIGNES.

This is free software; you can redistribute it and/or modify it under
the same terms as the Perl 5 programming language system itself.

=cut