#!perl

## no critic: InputOutput::ProhibitInteractiveTest

use 5.010001;
use strict;
use warnings;

our $AUTHORITY = 'cpan:PERLANCAR'; # AUTHORITY
our $DATE = '2022-03-20'; # DATE
our $DIST = 'App-SerializeUtils'; # DIST
our $VERSION = '0.165'; # VERSION

my ($from, $to) = $0 =~ /(\w+)2(\w+)\z/;
$from //= "";
$to   //= "";

my %Opts;

GET_OPTIONS: {
    $Opts{compact} //= (-t STDOUT) ? 0:1;
    $Opts{safe} //= 0;

    my %go_spec = (
        "help|h|?"  => sub {
            print "Please see manpage for more information\n\n";
            exit 0;
        },
        "version|v" => sub {
            no warnings 'once';
            print "serializeutils-convert version ". ($main::VERSION // "dev") .
                ($main::DATE ? " ($main::DATE)" : "") . "\n";
            exit 0;
        },
        "from=s"    => \$from,
        "to=s"      => \$to,
        "color!"    => \$Opts{color},
        "compact!"  => \$Opts{compact},
        "safe!"     => \$Opts{safe},
        "dumper=s"  => \$Opts{dumper},
    );
    require Getopt::Long::Complete;
    my $res = Getopt::Long::Complete::GetOptions(%go_spec);
    die "serializeutils-convert: There are errors in processing options\n"
        unless $res;

    $Opts{color} //= $ENV{COLOR} // (-t STDOUT) //
        ($to eq 'perlcolor' || $to eq 'json' ? 1:0);
    $Opts{dumper} //=
        $Opts{compact} ? 'Data::Dmp' :
        $to eq 'perlcolor' || $Opts{color} ? 'Data::Dump::Color' :
        'Data::Dump';
    #use DD; print "to=$to\n"; dd \%Opts;

} # GET_OPTIONS

my $code_from;
PARSE_INPUT: {
    undef $/;
    if ($from =~ /\A(perl|perlcolor)\z/) {
        if ($Opts{safe}) {
            require Data::Undump;
            $code_from = 'Data::Undump::undump(scalar <>)';
        } else {
            $code_from = 'eval scalar <>';
        }
    } elsif ($from eq 'json') {
        require JSON::MaybeXS;
        $code_from = 'JSON::MaybeXS->new->allow_nonref->decode(scalar <>)';
    } elsif ($from eq 'phpser') {
        require PHP::Serialization;
        $code_from = 'PHP::Serialization::unserialize(scalar <>)';
    } elsif ($from eq 'sereal') {
        require Sereal::Decoder;
        $code_from = 'Sereal::Decoder::decode_sereal(scalar <>)';
    } elsif ($from eq 'sexp') {
        require SExpression::Decode::Marpa;
        $code_from = 'SExpression::Decode::Marpa::from_sexp(scalar <>)';
    } elsif ($from eq 'storable') {
        require Storable;
        $code_from = 'Storable::thaw(scalar <>)';
    } elsif ($from eq 'yaml') {
        no warnings 'once';
        require YAML::Syck; $YAML::Syck::ImplicitTyping = 1;
        $code_from = 'YAML::Syck::Load(scalar <>)';
    } else {
        die "serializeutils-convert: Can't convert from '$from'\n";
    }
} # PARSE_INPUT

my $code_to;
OUTPUT: {
    if ($to =~ /\A(perl|perlcolor)\z/) {
        if ($Opts{dumper} eq 'Data::Dump::Color') {
            require Data::Dump::Color;
            $code_to = "Data::Dump::Color::dump($code_from)";
        } elsif ($Opts{dumper} eq 'Data::Dump') {
            require Data::Dump;
            $code_to = "Data::Dump::dump($code_from)";
        # commented out, not released yet
        #} elsif ($Opts{dumper} eq 'Data::Bahe') {
        #    require Data::Bahe;
        #    $code_to = "Data::Bahe::dump($code_from)";
        } elsif ($Opts{dumper} eq 'Data::Dmp') {
            require Data::Dmp;
            $code_to = "Data::Dmp::dmp($code_from)";
        } elsif ($Opts{dumper} eq 'Data::Dumper::Compact') {
            require Data::Dumper::Compact;
            $code_to = "Data::Dumper::Compact->dump($code_from)";
        } elsif ($Opts{dumper} eq 'Data::Dumper') {
            require Data::Dumper;
            $code_to = "Data::Dumper->new([$code_from], ['data'])->".
                "Purity(1)->Indent(1)->Terse(1)->Dump";
        } else {
            die "serializeutils-convert: Unknown dumper '$Opts{dumper}'\n";
        }
    } elsif ($to eq 'json') {
        if ($Opts{color}) {
            require JSON::Color;
            $code_to = "JSON::Color::encode_json($code_from)";
        } else {
            require JSON::MaybeXS;
            $code_to = "JSON::MaybeXS->new->allow_nonref->encode($code_from)";
        }
    } elsif ($to eq 'phpser') {
        require PHP::Serialization;
        $code_to = "PHP::Serialization::serialize($code_from)";
    } elsif ($to eq 'sereal') {
        require Sereal::Encoder;
        $code_to = "Sereal::Encoder::encode_sereal($code_from)";
    } elsif ($to eq 'sexp') {
        require Data::Dump::SExpression;
        $code_to = "Data::Dump::SExpression::dump_sexp($code_from)";
    } elsif ($to eq 'storable') {
        require Storable;
        $code_to = "Storable::freeze($code_from)";
    } elsif ($to eq 'yaml') {
        if ($Opts{color}) {
            require YAML::Tiny::Color;
            $code_to = "YAML::Tiny::Color::Dump($code_from)";
        } else {
            no warnings 'once';
            require YAML::Syck; $YAML::Syck::ImplicitTyping = 1;
            $code_to = "YAML::Syck::Dump($code_from)";
        }
    } else {
        die "serializeutils-convert: Can't convert to '$to'\n";
    }

    eval "print $code_to"; ## no critic: BuiltinFunctions::ProhibitStringyEval
    die if $@;
} # OUTPUT

# ABSTRACT: Convert between serialization formats
# PODNAME: json2perl

__END__

=pod

=encoding UTF-8

=head1 NAME

json2perl - Convert between serialization formats

=head1 VERSION

This document describes version 0.165 of json2perl (from Perl distribution App-SerializeUtils), released on 2022-03-20.

=head1 SYNOPSIS

Usage:

 % serializeutils-convert [OPTIONS] < INPUT-FILE

For example, when called as C<json2yaml>:

 % script-that-outputs-json | json2yaml

=head1 DESCRIPTION

This script can be called as various names to convert between serialization
formats.

"perl" refers to Perl format, generated using L<Data::Dump> or L<Data::Dumper>
and parsed using Perl's C<eval()> or L<Data::Undump>.

"perlcolor" refers to colored Perl format, generated using L<Data::Dump::Color>.

"json" is of course the popular JavaScript Object Notation described in
L<https://www.json.org>.

"phpser" refers to PHP serialization format. This document describes the format
in more details:
L<http://www.phpinternalsbook.com/classes_objects/serialization.html>. To
serialize/deserialize this format, the script uses L<PHP::Serialization>.

"sereal" refers to the Sereal format, described in
L<https://github.com/Sereal/Sereal/blob/master/sereal_spec.pod>.

"storable" refers to the L<Storable> format.

"yaml" is the Yet Another Markup Language format specified in
L<https://www.yaml.org>.

The script are installed as the following names for convenience:

 perl2perlcolor
 perl2json
 perl2phpser
 perl2sereal
 perl2storable
 perl2yaml

 json2perl
 json2perlcolor
 json2phpser
 json2sereal
 json2storable
 json2yaml

 phpser2perl
 phpser2perlcolor
 phpser2json
 phpser2sereal
 phpser2storable
 phpser2yaml

 sereal2perl
 sereal2perlcolor
 sereal2json
 sereal2phpser
 sereal2storable
 sereal2yaml

 storable2perl
 storable2perlcolor
 storable2json
 storable2phpser
 storable2sereal
 storable2yaml

 yaml2perl
 yaml2perlcolor
 yaml2json
 yaml2phpser
 yaml2sereal
 yaml2storable

=head1 OPTIONS

=over

=item * --(no-)color

Only applies to output formats C<perl>, C<perlcolor>, C<json>, C<yaml>.

Whether to use colors. The default is from the COLOR environment variable, or
1 when script is called interactively.

=item * --(no-)compact

Only applies to output formats C<json>, C<perl>.

Whether to produce compact output. The default is false when outputing
interactively. For format C<perl>, will use L<Data::Dmp> when producing compact
output.

=item * --(no-)safe

Only applies to input format C<perl>.

Whether to parse safely. The default is false, which means parsing using Perl's
C<eval>. When set to true, will parse using L<Data::Undump> but parsing might
fail for more complex input, e.g. recursive data structures.

=item * --dumper=s

Only applies to output format C<perl>.

Set which dumper to use. Can be set to C<Data::Dump> or C<Data::Dump::Color> or
C<Data::Dumper>. The default is C<Data::Dump>.

=back

=head1 COMPLETION

This script has shell tab completion capability with support for several
shells.

=head2 bash

To activate bash completion for this script, put:

 complete -C json2perl json2perl

in your bash startup (e.g. C<~/.bashrc>). Your next shell session will then
recognize tab completion for the command. Or, you can also directly execute the
line above in your shell to activate immediately.

It is recommended, however, that you install modules using L<cpanm-shcompgen>
which can activate shell completion for scripts immediately.

=head2 tcsh

To activate tcsh completion for this script, put:

 complete json2perl 'p/*/`json2perl`/'

in your tcsh startup (e.g. C<~/.tcshrc>). Your next shell session will then
recognize tab completion for the command. Or, you can also directly execute the
line above in your shell to activate immediately.

It is also recommended to install C<shcompgen> (see above).

=head2 other shells

For fish and zsh, install C<shcompgen> as described above.

=head1 ENVIRONMENT

=head2 COLOR

Set the default for C<--color> option.

=head1 HOMEPAGE

Please visit the project's homepage at L<https://metacpan.org/release/App-SerializeUtils>.

=head1 SOURCE

Source repository is at L<https://github.com/perlancar/perl-App-SerializeUtils>.

=head1 SEE ALSO

L<App::SerializeUtils>

=head1 AUTHOR

perlancar <perlancar@cpan.org>

=head1 CONTRIBUTING


To contribute, you can send patches by email/via RT, or send pull requests on
GitHub.

Most of the time, you don't need to build the distribution yourself. You can
simply modify the code, then test via:

 % prove -l

If you want to build the distribution (e.g. to try to install it locally on your
system), you can install L<Dist::Zilla>,
L<Dist::Zilla::PluginBundle::Author::PERLANCAR>, and sometimes one or two other
Dist::Zilla plugin and/or Pod::Weaver::Plugin. Any additional steps required
beyond that are considered a bug and can be reported to me.

=head1 COPYRIGHT AND LICENSE

This software is copyright (c) 2022, 2021, 2020, 2018, 2017, 2015, 2014, 2013, 2011 by perlancar <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.

=head1 BUGS

Please report any bugs or feature requests on the bugtracker website L<https://rt.cpan.org/Public/Dist/Display.html?Name=App-SerializeUtils>

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.

=cut