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# $Id: TruncateByWord.pm,v 1.3 2008/06/20 06:17:12 oneroad Exp $ |
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# |
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package Koha::Template::Plugin::TruncateByWord; |
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use strict; |
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use warnings; |
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our $VERSION = '0.11'; |
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use Template::Plugin::Filter; |
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use base 'Template::Plugin::Filter'; |
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use Encode; |
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our $FILTER_NAME_DEFAULT = 'truncate_by_word'; |
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our $ORG_ENC_DEFAULT = 'utf8'; |
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sub init { |
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my $self = shift; |
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$self->{_DYNAMIC} = 1; |
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$self->install_filter($self->{_CONFIG}->{name}||$FILTER_NAME_DEFAULT); |
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$self->{_CONFIG}->{enc} ||= $self->{_ARGS}->[0] || $ORG_ENC_DEFAULT; |
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return $self; |
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} |
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sub filter { |
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my($self, $string, $args, $conf) = @_; |
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return '' unless $string; |
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# decode |
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my $org_enc; |
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unless ( utf8::is_utf8($string) ) { |
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$org_enc = $self->{_CONFIG}->{enc}; |
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$string = Encode::decode($org_enc, $string); |
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} |
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my $org_length = CORE::length($string); |
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my $length = $args->[0] || $org_length; |
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return if $length =~ /\D/; |
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$string = CORE::substr($string, 0, $length); |
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my $suffix = $args->[1]||''; |
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# revive encode |
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$string = Encode::encode($org_enc, $string) if $org_enc; |
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return $org_length > $length ? $string.$suffix : $string ; |
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} |
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1; |
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__END__ |
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=head1 NAME |
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Template::Plugin::TruncateByWord - A Template Toolkit filter to truncate not the number of bytes but characters |
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=head1 SYNOPSIS |
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# result is 'ab' |
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[% USE TruncateByWord %] |
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[% 'abcdefg' | truncate_by_word(2) %] |
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# result is 'abc....' |
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[% USE TruncateByWord %] |
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[% FILTER truncate_by_word(3,'....') %] |
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abcdefg |
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[% END %] |
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# default charset = 'utf8'. you can change this. |
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# result is 'abcd' |
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[% USE TruncateByWord 'euc-jp' %] |
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[% FILTER truncate_by_word(4) %] |
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abcdefg |
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[% END %] |
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=head1 DESCRIPTION |
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Template::Plugin::TruncateByWord is a filter plugin for Template Toolkit which truncate text not the number of bytes but the number of characters. |
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=head1 BUGS |
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If found, please Email me. I tested utf8, euc-jp, shiftjis, 7bit-jis, big5, and euc-kr. Please send me more test cases. |
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=head1 SEE ALSO |
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L<Template>, L<Template::Plugin::Filter>, and t/*.t |
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=head1 AUTHOR |
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User & KAWABATA Kazumichi (Higemaru) E<lt>kawabata@cpan.orgE<gt> |
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=head1 COPYRIGHT AND LICENSE |
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Copyright (C) 2008- KAWABATA Kazumichi |
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This library is free software; you can redistribute it and/or modify |
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it under the same terms as Perl itself. |
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=cut |