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package Perinci::Object::Metadata;
our $DATE = '2021-01-02'; # DATE
our $VERSION = '0.311'; # VERSION
use 5.010;
use strict;
use warnings;
# BEGIN COPY-PASTE FROM String::Trim::More
sub __trim_blank_lines {
local $_ = shift;
return $_ unless defined;
s/\A(?:\n\s*)+//;
s/(?:\n\s*){2,}\z/\n/;
$_;
}
# END COPY-PASTE
sub new {
my ($class, $meta) = @_;
$meta //= {};
my $obj = \$meta;
bless $obj, $class;
}
sub v {
my $self = shift;
${$self}->{v} // 1.0;
}
sub type {
die "BUG: type() must be subclassed";
}
sub as_struct {
my $self = shift;
${$self};
}
sub langprop {
my $self = shift;
my $opts;
if (ref($_[0]) eq 'HASH') {
$opts = shift;
} else {
$opts = {};
}
my $prop = shift;
my $deflang = ${$self}->{default_lang} // "en_US";
my $olang = $opts->{lang} || $ENV{LANGUAGE} || $ENV{LANG} || $deflang;
$olang =~ s/\W.+//; # change "en_US.UTF-8" to "en_US"
$olang = "en_US" if $olang eq 'C';
(my $olang2 = $olang) =~ s/\A([a-z]{2})_[A-Z]{2}\z/$1/; # change "en_US" to "en"
my $mark = $opts->{mark_different_lang} // 1;
#print "deflang=$deflang, olang=$olang, mark_different_lang=$mark\n";
my @k;
if ($olang eq $deflang) {
@k = ([$olang, $prop, 0]);
} else {
@k = (
[$olang, "$prop.alt.lang.$olang", 0],
([$olang2, "$prop.alt.lang.$olang2", 0]) x !!($olang2 ne $olang),
[$deflang, $prop, $mark],
);
}
my $v;
GET:
for my $k (@k) {
#print "k=".join(", ", @$k)."\n";
$v = ${$self}->{$k->[1]};
if (defined $v) {
if ($k->[2]) {
my $has_nl = $v =~ s/\n\z//;
$v = "{$olang|$k->[0] $v}" . ($has_nl ? "\n" : "");
}
$v = __trim_blank_lines($v);
last GET;
}
}
if (@_) {
# set value
${$self}->{$k[0][1]} = $_[0];
}
$v;
}
sub name {
my $self = shift;
my $opts;
if (@_ && ref($_[0]) eq 'HASH') {
$opts = shift;
} else {
$opts = {};
}
$self->langprop($opts, "name", @_);
}
sub caption {
my $self = shift;
my $opts;
if (@_ && ref($_[0]) eq 'HASH') {
$opts = shift;
} else {
$opts = {};
}
$self->langprop($opts, "caption", @_);
}
sub summary {
my $self = shift;
my $opts;
if (@_ && ref($_[0]) eq 'HASH') {
$opts = shift;
} else {
$opts = {};
}
$self->langprop($opts, "summary", @_);
}
sub description {
my $self = shift;
my $opts;
if (@_ && ref($_[0]) eq 'HASH') {
$opts = shift;
} else {
$opts = {};
}
$self->langprop($opts, "description", @_);
}
1;
# ABSTRACT: Base class for Perinci::Object metadata classes
__END__
=pod
=encoding UTF-8
=head1 NAME
Perinci::Object::Metadata - Base class for Perinci::Object metadata classes
=head1 VERSION
This document describes version 0.311 of Perinci::Object::Metadata (from Perl distribution Perinci-Object), released on 2020-01-02.
=head1 METHODS
=head2 new => obj
Constructor.
=head2 v => float
Get version.
=head2 as_struct => hash
Get underlying data structure.
=head2 type => str
Return type (e.g. C<function>, C<package>).
=head2 langprop([ \%opts, ]$prop[, $new_value])
Get or set property value in the specified language (i.e., either in C<prop> or
C<prop.alt.lang.XXX> properties).
Known options:
=over 4
=item * lang => STR
Defaults to metadata's C<default_lang> (which in turns default to C<en_US> if
unspecified).
=item * mark_different_lang => BOOL (defaults to 1)
If set to true, text with different language than the language requested will be
marked, e.g. C<"I love you"> requested in Indonesian language where the value
for that language is unavailable will result in C<"{en_US I love you}"> being
returned.
=back
=head2 name([ $new_value ]) => $value
Get or set C<name> property. Will call C<langprop()>.
=head2 summary([ $new_value ]) => $value
Get or set C<summary> property. Will call C<langprop()>.
=head2 description([ $new_value ]) => $value
Get or set C<description> property. Will call C<langprop()>.
=head2 caption([ $new_value ]) => $value
Get or set C<caption> property. Will call C<langprop()>.
=head1 HOMEPAGE
Please visit the project's homepage at L<https://metacpan.org/release/Perinci-Object>.
=head1 SOURCE
Source repository is at L<https://github.com/perlancar/perl-Perinci-Object>.
=head1 BUGS
Please report any bugs or feature requests on the bugtracker website L<https://github.com/perlancar/perl-Perinci-Object/issues>
When submitting a bug or request, please include a test-file or a
patch to an existing test-file that illustrates the bug or desired
feature.
=head1 AUTHOR
perlancar <perlancar@cpan.org>
=head1 COPYRIGHT AND LICENSE
This software is copyright (c) 2021, 2017, 2016, 2015, 2014, 2013, 2012, 2011 by perlancar@cpan.org.
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
|
