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package Regexp::Chinese::TradSimp; |
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use strict; |
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use Encode::HanConvert; |
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our $VERSION = '0.01'; |
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=encoding utf8 |
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=head1 NAME |
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Regexp::Chinese::TradSimp - Take a string containing Chinese text, and turn it |
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into a traditional-simplified-insensitive regexp. |
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=head1 SYNOPSIS |
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#!/usr/bin/perl -w |
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use strict; |
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use utf8; |
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my $regexp = Regexp::Chinese::TradSimp->make_regexp( "鳳爪" ); |
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my $text = "豉汁蒸凤爪"; |
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if ( $text =~ $regexp ) { |
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print "Chicken feet detected!\n"; |
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} |
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# Alternatively: |
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my $tradsimp = Regexp::Chinese::TradSimp->new; |
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my $regexp = $tradsimp->make_regexp( "鳳爪" ); |
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=head1 DESCRIPTION |
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Given a string containing Chinese text, transforms it into a regexp that can |
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be used to match both the simplified and the traditional version of the |
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text. The distribution also includes a commandline tool, C |
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(Bsensitise Braditional-Bimplified). |
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=head1 METHODS |
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=over |
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=item B |
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# This returns /[凤鳳]爪/. |
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my $regexp = Regexp::Chinese::TradSimp->make_regexp( "鳳爪" ); |
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# This returns /[水虾蝦][饺餃]/ |
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my $regexp = Regexp::Chinese::TradSimp->make_regexp( "[水蝦]餃" ); |
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# This returns /([虾蝦]|[带帶]子)[饺餃]/ |
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my $regexp = Regexp::Chinese::TradSimp->make_regexp( "(虾|带子)饺" ); |
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C attempts to create a regular expression that will match its |
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argument in a traditional-simplified-insensitive way. The argument should |
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be a string of Chinese characters, but you can include certain other aspects |
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of regular expressions such as character classes and bracketed groupings. |
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Arguments of forms other than those shown above are not guaranteed to work. |
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=item B |
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Does exactly the same as C but returns a string instead of a |
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regexp, e.g. "[凤鳳]爪" rather than /[凤鳳]爪/. |
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We are also -ise/-ize agnostic: |
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# These do the same thing. |
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my $regexp = $tradsimp->desensitise( qr/叉燒包/ ); |
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my $regexp = $tradsimp->desensitize( qr/叉燒包/ ); |
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=back |
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=cut |
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sub new { |
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my ( $class, @args ) = @_; |
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my $self = { }; |
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bless $self, $class; |
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return $self; |
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} |
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sub desensitise { |
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my $self = shift; |
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my $text = shift; |
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my ( @characters, $inclass ); |
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foreach my $character ( split //, $text ) { |
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# This is hairy and fragile. |
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if ( $character eq "[" ) { |
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$inclass++; |
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} elsif ( $character eq "]" ) { |
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$inclass--; |
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} |
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my $trad = trad_to_simp( $character ); |
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my $simp = simp_to_trad( $character ); |
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if ( $trad eq $simp ) { |
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push @characters, $character; |
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} elsif ( $inclass ) { |
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push @characters, "$trad$simp"; |
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} else { |
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push @characters, "[$trad$simp]"; |
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} |
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} |
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$text = join( "", @characters ); |
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return $text; |
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} |
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sub desensitize { |
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return desensitise( @_ ); |
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} |
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sub make_regexp { |
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my $text = desensitise( @_ ); |
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return qr/$text/; |
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} |
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=head1 AUTHOR |
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Kake L Pugh |
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=head1 COPYRIGHT |
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Copyright (C) 2010 Kake L Pugh. All Rights Reserved. |
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This is free software; you can redistribute it and/or modify it under |
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the same terms as Perl itself. |
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=cut |
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1; |