#!/usr/bin/perl

# http://perlmonks.org/?node_id=1084067
# Script by Jim
#use v5.10;
use strict;
use warnings;
use utf8;

use Encode qw( encode_utf8 );
use Unicode::UCD qw( charblock );

binmode STDOUT, ':encoding(UTF-8)';

while (my $word = <DATA>) {
    chomp $word;

    my $length_in_bytes       = length_in_bytes($word);
    my $length_in_code_points = length_in_code_points($word);
    my $length_in_graphemes   = length_in_graphemes($word);
    my $code_points_in_blocks = code_points_in_blocks($word);

    printf "%-12s | Bytes: %2d | Code Points: %2d | Graphemes: %2d | Blocks: %s\n",
        $word,
        $length_in_bytes,
        $length_in_code_points,
        $length_in_graphemes,
        $code_points_in_blocks;
}

exit 0;

sub length_in_bytes {
    my $word = shift;

    my $length = length encode_utf8($word);

    return $length;
}

sub length_in_code_points {
    my $word = shift;

    my $length = length $word;

    return $length;
}

sub length_in_graphemes {
    my $word = shift;

    my $length = () = $word =~ m/\X/g;

    return $length;
}

sub code_points_in_blocks {
    my $word = shift;

    my %total_code_points_by;
    my $blocks = '';

    for my $character (split m//, $word) {
        my $block = charblock(ord $character);

        $total_code_points_by{$block}++;
    }

    for my $block (sort keys %total_code_points_by) {
        my $total = $total_code_points_by{$block};

        $blocks .= sprintf "%s%s (%d)",
                   (length $blocks ? ', ' : ''), $block, $total;
    }

    return $blocks;
}

__DATA__
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