NAME Unicode::Util - Unicode-aware versions of built-in Perl functions VERSION This document describes Unicode::Util version 0.04. SYNOPSIS use Unicode::Util qw( graph_length code_length byte_length ); # grapheme cluster ю́: Cyrillic small letter yu + combining acute accent my $grapheme = "\x{44E}\x{301}"; say graph_length($grapheme); # 1 say code_length($grapheme); # 2 say byte_length($grapheme); # 4 DESCRIPTION This module provides additional versions of Perl’s built-in functions, tailored to work on three different units: * graph: Unicode extended grapheme clusters (graphemes) * code: Unicode codepoints * byte: 8-bit bytes (octets) This is an early release and this module is likely to have major revisions. Only the "length"-, "chop"-, and "reverse"-functions are currently implemented. See the "TODO" section for planned future additions. FUNCTIONS length graph_length($string) Returns the length in graphemes of the given string. This is likely the number of “characters” that many people would count on a printed string, plus non-printing characters. code_length($string) Returns the length in codepoints of the given string. This is likely the number of “characters” that many programmers and programming languages would count in a string. byte_length($string) byte_length($string, $encoding) Returns the length in bytes of the given string if it were encoded using the specified encoding or UTF-8 if no encoding is supplied. chop These do not modify the original value, unlike the built-in "chop". graph_chop($string) Returns the given string with the last grapheme chopped off. code_chop($string) Returns the given string with the last codepoint chopped off. reverse graph_reverse($string) Returns the given string value with all graphemes in the opposite order. TODO Evaluate the following core Perl functions and operators for the potential addition to this module. "substr", "index", "rindex", "eq", "ne", "lt", "gt", "le", "ge", "cmp" SEE ALSO String::Multibyte, Perl6::Str, AUTHOR Nick Patch COPYRIGHT AND LICENSE © 2011–2012 Nick Patch This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself.