#!perl

our $AUTHORITY = 'cpan:PERLANCAR'; # AUTHORITY
our $DATE = '2021-01-08'; # DATE
our $DIST = 'App-SubtitleUtils'; # DIST
our $VERSION = '0.005'; # VERSION

die "Usage: $0 frames FILE\n" unless @ARGV >= 1;
$_ = shift @ARGV;
if (/^[+-]?\d+$/) {
	$frames = $_;
} else {
	die "FATAL: Invalid number of frames `$_'\n";
}

while (<>) {
	next unless /\S/;
	($frame1, $frame2, $text) = /\{(\d+)\}\{(\d+)\}(.*)/ or
		die "FATAL: Invalid entry in line $.: $_\n";
	printf "{%d}{%d}%s\n", $frame1+$frames, $frame2+$frames, $text;
}

# ABSTRACT:
# PODNAME: subshift

__END__

=pod

=encoding UTF-8

=head1 NAME

subshift - # PODNAME: subshift

=head1 VERSION

This document describes version 0.005 of subshift (from Perl distribution App-SubtitleUtils), released on 2021-01-08.

=head1 SYNOPSIS

 % subshift <frames> <FILE>

=head1 HISTORY

2003-04-12 - first written

2021-01-08 - put in CPAN distribution App-SubtitleUtils

=head1 HOMEPAGE

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

=head1 SOURCE

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

=head1 BUGS

Please report any bugs or feature requests on the bugtracker website L<https://github.com/perlancar/perl-App-SubtitleUtils/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, 2020 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
