| 1 |
ulpfr |
13 |
# -*- Mode: Cperl -*- |
| 2 |
ulpfr |
10 |
# $Basename: Filter.pm $ |
| 3 |
ulpfr |
19 |
# $Revision: 1.9 $ |
| 4 |
ulpfr |
10 |
# ITIID : $ITI$ $Header $__Header$ |
| 5 |
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# Author : Ulrich Pfeifer |
| 6 |
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# Created On : Thu Aug 15 18:09:51 1996 |
| 7 |
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# Last Modified By: Ulrich Pfeifer |
| 8 |
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# Last Modified On: Sun Nov 22 18:44:46 1998 |
| 9 |
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# Language : CPerl |
| 10 |
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# Update Count : 105 |
| 11 |
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# Status : Unknown, Use with caution! |
| 12 |
ulpfr |
13 |
# |
| 13 |
ulpfr |
10 |
# Copyright (c) 1996-1997, Ulrich Pfeifer |
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ulpfr |
13 |
# |
| 15 |
ulpfr |
10 |
package WAIT::Filter; |
| 16 |
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require WAIT; |
| 17 |
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use strict; |
| 18 |
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use Carp; |
| 19 |
dpavlin |
118 |
use vars qw($VERSION @ISA @EXPORT_OK %STOP $SPLIT $UNAC $ICONV $AUTOLOAD); |
| 20 |
ulpfr |
10 |
use subs qw(grundform); |
| 21 |
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| 22 |
dpavlin |
118 |
use Text::Unaccent; |
| 23 |
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use Text::Iconv; |
| 24 |
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| 25 |
ulpfr |
10 |
require Exporter; |
| 26 |
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@ISA = qw(Exporter); |
| 28 |
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@EXPORT_OK = qw( |
| 29 |
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Stem |
| 30 |
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Soundex |
| 31 |
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Phonix |
| 32 |
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Metaphone |
| 33 |
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isolc disolc |
| 34 |
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isouc disouc |
| 35 |
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isotr disotr |
| 36 |
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stop grundform |
| 37 |
laperla |
32 |
utf8iso |
| 38 |
ulpfr |
10 |
); |
| 39 |
ulpfr |
13 |
# (most implemented in WAIT.xs) |
| 40 |
ulpfr |
10 |
|
| 41 |
ulpfr |
19 |
$VERSION = substr q$Revision: 1.9 $, 10; |
| 42 |
ulpfr |
10 |
|
| 43 |
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sub split { |
| 44 |
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map split(' ', $_), @_; |
| 45 |
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} |
| 46 |
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| 47 |
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$SPLIT = q[ |
| 48 |
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sub splitXXX { |
| 49 |
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grep length($_)>=XXX, map split(' ', $_), @_; |
| 50 |
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} |
| 51 |
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]; |
| 52 |
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|
| 53 |
dpavlin |
118 |
$UNAC = q[ |
| 54 |
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sub unac_CHARSET { |
| 55 |
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map split(' ',unac_string('CHARSET', $_) || $_), @_; |
| 56 |
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} |
| 57 |
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]; |
| 58 |
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| 59 |
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my $iconv; |
| 60 |
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| 61 |
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$ICONV = q[ |
| 62 |
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sub iconv_CHARSETfrom_CHARSETto { |
| 63 |
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my $ic = $iconv->{'CHARSETfrom_CHARSETto'}); |
| 64 |
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$ic ||= $iconv->{'CHARSETfrom_CHARSETto'} = Text::Iconv->new('CHARSETfrom','CHARSETto'); |
| 65 |
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map split(' ',$ic->convert($_) || $_), @_; |
| 66 |
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} |
| 67 |
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]; |
| 68 |
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| 69 |
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| 70 |
ulpfr |
10 |
sub AUTOLOAD { |
| 71 |
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my $func = $AUTOLOAD; $func =~ s/.*:://; |
| 72 |
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| 73 |
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if ($func =~ /split(\d+)/) { |
| 74 |
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my $num = $1; |
| 75 |
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my $split = $SPLIT; |
| 76 |
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| 77 |
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$split =~ s/XXX/$num/g; |
| 78 |
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eval $split; |
| 79 |
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if ($@ eq '') { |
| 80 |
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goto &$AUTOLOAD; |
| 81 |
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} |
| 82 |
|
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} elsif ($func eq 'grundform') { |
| 83 |
|
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eval {require Text::German;}; |
| 84 |
|
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croak "You must have Text::German to use 'grundform'" |
| 85 |
|
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if $@ ne ''; |
| 86 |
|
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*grundform = Text::German->can('reduce'); |
| 87 |
|
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goto &grundform; |
| 88 |
|
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} elsif ($func eq 'date') { |
| 89 |
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eval {require Time::ParseDate;}; |
| 90 |
|
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croak "You must have Time::ParseDate to use 'date'" |
| 91 |
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if $@ ne ''; |
| 92 |
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*date = Time::ParseDate->can('parsedate'); |
| 93 |
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goto \&date; |
| 94 |
|
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} elsif ($func eq 'decode_entities') { |
| 95 |
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eval {require HTML::Entities;}; |
| 96 |
dpavlin |
118 |
croak "You must have HTML::Entities to use 'decode_entities'" |
| 97 |
ulpfr |
10 |
if $@ ne ''; |
| 98 |
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*decode_entities = HTML::Entities->can('decode_entities'); |
| 99 |
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goto &decode_entities; |
| 100 |
ulpfr |
13 |
} elsif ($func =~ /^d?utf8iso$/) { |
| 101 |
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no strict 'refs'; |
| 102 |
laperla |
32 |
*$func = sub { |
| 103 |
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# Courtesy JHI |
| 104 |
laperla |
41 |
my $s = shift; |
| 105 |
|
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$s =~ s{([\xC0-\xDF])([\x80-\xBF])} |
| 106 |
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{chr(ord($1)<<6&0xC0|ord($2)&0x3F)}eg; |
| 107 |
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$s; |
| 108 |
laperla |
32 |
}; |
| 109 |
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goto \&$func; |
| 110 |
dpavlin |
118 |
} elsif ($func =~ /unac_(.+)/) { |
| 111 |
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my $charset = $1; |
| 112 |
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my $unac = $UNAC; |
| 113 |
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$unac =~ s/CHARSET/$charset/g; |
| 114 |
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print "### $unac ###\n"; |
| 115 |
|
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eval $unac; |
| 116 |
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if ($@ eq '') { |
| 117 |
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goto &$func; |
| 118 |
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} |
| 119 |
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} elsif ($func =~ /iconv_([^_]+)_([^_]+)/) { |
| 120 |
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my ($cf,$ct) = ($1,$2); |
| 121 |
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my $iconv = $ICONV; |
| 122 |
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print "### $cf -> $ct\n"; |
| 123 |
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$iconv =~ s/CHARSETfrom/$cf/gs; |
| 124 |
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$iconv =~ s/CHARSETto/$ct/gs; |
| 125 |
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print "### $iconv ###\n"; |
| 126 |
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eval $iconv; |
| 127 |
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if ($@ eq '') { |
| 128 |
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goto &$func; |
| 129 |
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} |
| 130 |
ulpfr |
10 |
} |
| 131 |
ulpfr |
13 |
Carp::confess "Class WAIT::Filter::$func not found"; |
| 132 |
ulpfr |
10 |
} |
| 133 |
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| 134 |
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while (<DATA>) { |
| 135 |
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chomp; |
| 136 |
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last if /__END__/; |
| 137 |
ulpfr |
19 |
next if /^\s*#/; # there's a comment |
| 138 |
ulpfr |
10 |
$STOP{$_}++; |
| 139 |
|
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} |
| 140 |
laperla |
50 |
close DATA; |
| 141 |
ulpfr |
10 |
|
| 142 |
|
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sub stop { |
| 143 |
|
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if (exists $STOP{$_[0]}) { |
| 144 |
|
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'' |
| 145 |
|
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} else { |
| 146 |
|
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$_[0]; |
| 147 |
|
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} |
| 148 |
|
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} |
| 149 |
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| 150 |
|
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sub gdate { |
| 151 |
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my $date = shift; |
| 152 |
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|
| 153 |
|
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$date =~ s:(\d+)\.(\d+)\.(d+):$2/$1/$3:; |
| 154 |
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date($date); |
| 155 |
|
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} |
| 156 |
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| 157 |
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1; |
| 158 |
dpavlin |
109 |
|
| 159 |
ulpfr |
10 |
__DATA__ |
| 160 |
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a |
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about |
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above |
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according |
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across |
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actually |
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adj |
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after |
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afterwards |
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again |
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against |
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all |
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almost |
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alone |
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along |
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already |
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also |
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although |
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always |
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among |
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amongst |
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an |
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and |
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another |
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any |
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anyhow |
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anyone |
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anything |
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anywhere |
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are |
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aren't |
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around |
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as |
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at |
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b |
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be |
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became |
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because |
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become |
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becomes |
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becoming |
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been |
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before |
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beforehand |
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begin |
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beginning |
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behind |
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being |
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below |
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beside |
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besides |
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between |
| 212 |
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beyond |
| 213 |
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billion |
| 214 |
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both |
| 215 |
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but |
| 216 |
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by |
| 217 |
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c |
| 218 |
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can |
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can't |
| 220 |
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cannot |
| 221 |
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caption |
| 222 |
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co |
| 223 |
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co. |
| 224 |
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could |
| 225 |
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couldn't |
| 226 |
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d |
| 227 |
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did |
| 228 |
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didn't |
| 229 |
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do |
| 230 |
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does |
| 231 |
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doesn't |
| 232 |
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don't |
| 233 |
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down |
| 234 |
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during |
| 235 |
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|
e |
| 236 |
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eg |
| 237 |
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eight |
| 238 |
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eighty |
| 239 |
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either |
| 240 |
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else |
| 241 |
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elsewhere |
| 242 |
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end |
| 243 |
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ending |
| 244 |
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enough |
| 245 |
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etc |
| 246 |
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even |
| 247 |
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ever |
| 248 |
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every |
| 249 |
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everyone |
| 250 |
|
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everything |
| 251 |
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everywhere |
| 252 |
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except |
| 253 |
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f |
| 254 |
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few |
| 255 |
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fifty |
| 256 |
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|
first |
| 257 |
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|
five |
| 258 |
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vfor |
| 259 |
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|
former |
| 260 |
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formerly |
| 261 |
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|
forty |
| 262 |
ulpfr |
13 |
found |
| 263 |
ulpfr |
10 |
four |
| 264 |
|
|
from |
| 265 |
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|
further |
| 266 |
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|
g |
| 267 |
|
|
h |
| 268 |
|
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had |
| 269 |
|
|
has |
| 270 |
|
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hasn't |
| 271 |
|
|
have |
| 272 |
|
|
haven't |
| 273 |
|
|
he |
| 274 |
|
|
he'd |
| 275 |
|
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he'll |
| 276 |
|
|
he's |
| 277 |
|
|
hence |
| 278 |
|
|
her |
| 279 |
|
|
here |
| 280 |
|
|
here's |
| 281 |
|
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hereafter |
| 282 |
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hereby |
| 283 |
|
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herein |
| 284 |
|
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hereupon |
| 285 |
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hers |
| 286 |
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herself |
| 287 |
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|
him |
| 288 |
|
|
himself |
| 289 |
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|
his |
| 290 |
|
|
how |
| 291 |
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|
however |
| 292 |
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|
hundred |
| 293 |
|
|
i |
| 294 |
|
|
i'd |
| 295 |
|
|
i'll |
| 296 |
|
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i'm |
| 297 |
|
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i've |
| 298 |
|
|
ie |
| 299 |
|
|
if |
| 300 |
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in |
| 301 |
|
|
inc. |
| 302 |
|
|
indeed |
| 303 |
|
|
instead |
| 304 |
|
|
into |
| 305 |
|
|
is |
| 306 |
|
|
isn't |
| 307 |
|
|
it |
| 308 |
|
|
it's |
| 309 |
|
|
its |
| 310 |
|
|
itself |
| 311 |
|
|
j |
| 312 |
|
|
k |
| 313 |
|
|
l |
| 314 |
|
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last |
| 315 |
|
|
later |
| 316 |
|
|
latter |
| 317 |
|
|
latterly |
| 318 |
|
|
least |
| 319 |
|
|
less |
| 320 |
|
|
let |
| 321 |
|
|
let's |
| 322 |
|
|
like |
| 323 |
|
|
likely |
| 324 |
|
|
ltd |
| 325 |
|
|
m |
| 326 |
|
|
made |
| 327 |
|
|
make |
| 328 |
|
|
makes |
| 329 |
|
|
many |
| 330 |
|
|
maybe |
| 331 |
|
|
me |
| 332 |
|
|
meantime |
| 333 |
|
|
meanwhile |
| 334 |
|
|
might |
| 335 |
|
|
million |
| 336 |
|
|
miss |
| 337 |
|
|
more |
| 338 |
|
|
moreover |
| 339 |
|
|
most |
| 340 |
|
|
mostly |
| 341 |
|
|
mr |
| 342 |
|
|
mrs |
| 343 |
|
|
much |
| 344 |
|
|
must |
| 345 |
|
|
my |
| 346 |
|
|
myself |
| 347 |
|
|
n |
| 348 |
|
|
namely |
| 349 |
|
|
neither |
| 350 |
|
|
never |
| 351 |
|
|
nevertheless |
| 352 |
|
|
next |
| 353 |
|
|
nine |
| 354 |
|
|
ninety |
| 355 |
|
|
no |
| 356 |
|
|
nobody |
| 357 |
|
|
none |
| 358 |
|
|
nonetheless |
| 359 |
|
|
noone |
| 360 |
|
|
nor |
| 361 |
|
|
not |
| 362 |
|
|
nothing |
| 363 |
|
|
now |
| 364 |
|
|
nowhere |
| 365 |
|
|
o |
| 366 |
|
|
of |
| 367 |
|
|
off |
| 368 |
|
|
often |
| 369 |
|
|
on |
| 370 |
|
|
once |
| 371 |
|
|
one |
| 372 |
|
|
one's |
| 373 |
|
|
only |
| 374 |
|
|
onto |
| 375 |
|
|
or |
| 376 |
|
|
other |
| 377 |
|
|
others |
| 378 |
|
|
otherwise |
| 379 |
|
|
our |
| 380 |
|
|
ours |
| 381 |
|
|
ourselves |
| 382 |
|
|
out |
| 383 |
|
|
over |
| 384 |
|
|
overall |
| 385 |
|
|
own |
| 386 |
|
|
p |
| 387 |
|
|
per |
| 388 |
|
|
perhaps |
| 389 |
|
|
q |
| 390 |
|
|
r |
| 391 |
|
|
rather |
| 392 |
|
|
recent |
| 393 |
|
|
recently |
| 394 |
|
|
s |
| 395 |
|
|
same |
| 396 |
|
|
seem |
| 397 |
|
|
seemed |
| 398 |
|
|
seeming |
| 399 |
|
|
seems |
| 400 |
|
|
seven |
| 401 |
|
|
seventy |
| 402 |
|
|
several |
| 403 |
|
|
she |
| 404 |
|
|
she'd |
| 405 |
|
|
she'll |
| 406 |
|
|
she's |
| 407 |
|
|
should |
| 408 |
|
|
shouldn't |
| 409 |
|
|
since |
| 410 |
|
|
six |
| 411 |
|
|
sixty |
| 412 |
|
|
so |
| 413 |
|
|
some |
| 414 |
|
|
somehow |
| 415 |
|
|
someone |
| 416 |
|
|
something |
| 417 |
|
|
sometime |
| 418 |
|
|
sometimes |
| 419 |
|
|
somewhere |
| 420 |
|
|
still |
| 421 |
|
|
stop |
| 422 |
|
|
such |
| 423 |
|
|
t |
| 424 |
|
|
taking |
| 425 |
|
|
ten |
| 426 |
|
|
than |
| 427 |
|
|
that |
| 428 |
|
|
that'll |
| 429 |
|
|
that's |
| 430 |
|
|
that've |
| 431 |
|
|
the |
| 432 |
|
|
their |
| 433 |
|
|
them |
| 434 |
|
|
themselves |
| 435 |
|
|
then |
| 436 |
|
|
thence |
| 437 |
|
|
there |
| 438 |
|
|
there'd |
| 439 |
|
|
there'll |
| 440 |
|
|
there're |
| 441 |
|
|
there's |
| 442 |
|
|
there've |
| 443 |
|
|
thereafter |
| 444 |
|
|
thereby |
| 445 |
|
|
therefore |
| 446 |
|
|
therein |
| 447 |
|
|
thereupon |
| 448 |
|
|
these |
| 449 |
|
|
they |
| 450 |
|
|
they'd |
| 451 |
|
|
they'll |
| 452 |
|
|
they're |
| 453 |
|
|
they've |
| 454 |
|
|
thirty |
| 455 |
|
|
this |
| 456 |
|
|
those |
| 457 |
|
|
though |
| 458 |
|
|
thousand |
| 459 |
|
|
three |
| 460 |
|
|
through |
| 461 |
|
|
throughout |
| 462 |
|
|
thru |
| 463 |
|
|
thus |
| 464 |
|
|
to |
| 465 |
|
|
together |
| 466 |
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|
too |
| 467 |
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toward |
| 468 |
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towards |
| 469 |
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trillion |
| 470 |
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twenty |
| 471 |
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two |
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u |
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under |
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unless |
| 475 |
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unlike |
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unlikely |
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until |
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up |
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upon |
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us |
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used |
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using |
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v |
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very |
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via |
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w |
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was |
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wasn't |
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we |
| 490 |
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we'd |
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we'll |
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we're |
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we've |
| 494 |
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well |
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were |
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weren't |
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what |
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what'll |
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what's |
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what've |
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whatever |
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when |
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whence |
| 504 |
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whenever |
| 505 |
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where |
| 506 |
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where's |
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whereafter |
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whereas |
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whereby |
| 510 |
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wherein |
| 511 |
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whereupon |
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wherever |
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whether |
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which |
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while |
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whither |
| 517 |
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who |
| 518 |
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who'd |
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who'll |
| 520 |
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who's |
| 521 |
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whoever |
| 522 |
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whole |
| 523 |
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whom |
| 524 |
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whomever |
| 525 |
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whose |
| 526 |
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why |
| 527 |
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will |
| 528 |
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with |
| 529 |
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within |
| 530 |
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without |
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won't |
| 532 |
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would |
| 533 |
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wouldn't |
| 534 |
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x |
| 535 |
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y |
| 536 |
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yes |
| 537 |
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yet |
| 538 |
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you |
| 539 |
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you'd |
| 540 |
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you'll |
| 541 |
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you're |
| 542 |
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you've |
| 543 |
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your |
| 544 |
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yours |
| 545 |
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yourself |
| 546 |
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yourselves |
| 547 |
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z |
| 548 |
|
|
# occuring in more than 100 files |
| 549 |
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acc |
| 550 |
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accent |
| 551 |
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accents |
| 552 |
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and |
| 553 |
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are |
| 554 |
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bell |
| 555 |
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can |
| 556 |
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character |
| 557 |
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corrections |
| 558 |
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crt |
| 559 |
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daisy |
| 560 |
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dash |
| 561 |
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date |
| 562 |
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defined |
| 563 |
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definitions |
| 564 |
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description |
| 565 |
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devices |
| 566 |
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diablo |
| 567 |
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dummy |
| 568 |
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factors |
| 569 |
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following |
| 570 |
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font |
| 571 |
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for |
| 572 |
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from |
| 573 |
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fudge |
| 574 |
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give |
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have |
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header |
| 577 |
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holds |
| 578 |
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log |
| 579 |
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logo |
| 580 |
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low |
| 581 |
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lpr |
| 582 |
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mark |
| 583 |
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name |
| 584 |
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nroff |
| 585 |
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out |
| 586 |
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output |
| 587 |
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pitch |
| 588 |
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put |
| 589 |
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rcsfile |
| 590 |
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reference |
| 591 |
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resolution |
| 592 |
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revision |
| 593 |
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see |
| 594 |
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set |
| 595 |
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simple |
| 596 |
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smi |
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some |
| 598 |
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string |
| 599 |
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synopsis |
| 600 |
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system |
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that |
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the |
| 603 |
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this |
| 604 |
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translation |
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troff |
| 606 |
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typewriter |
| 607 |
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ucb |
| 608 |
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unbreakable |
| 609 |
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use |
| 610 |
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used |
| 611 |
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user |
| 612 |
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vroff |
| 613 |
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wheel |
| 614 |
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will |
| 615 |
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with |
| 616 |
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you |
| 617 |
|
|
__END__ |
| 618 |
|
|
|
| 619 |
|
|
=head1 NAME |
| 620 |
|
|
|
| 621 |
|
|
WAIT::Filter - Perl extension providing the basic freeWAIS-sf reduction functions |
| 622 |
|
|
|
| 623 |
|
|
=head1 SYNOPSIS |
| 624 |
|
|
|
| 625 |
ulpfr |
13 |
use WAIT::Filter qw(Stem Soundex Phonix isolc disolc isouc disouc |
| 626 |
laperla |
32 |
isotr disotr stop grundform); |
| 627 |
ulpfr |
10 |
|
| 628 |
ulpfr |
13 |
$stem = Stem($word); |
| 629 |
|
|
$scode = Soundex($word); |
| 630 |
|
|
$pcode = Phonix($word); |
| 631 |
|
|
$lword = isolc($word); |
| 632 |
ulpfr |
10 |
disolc($word); |
| 633 |
ulpfr |
13 |
$uword = isouc($word); |
| 634 |
ulpfr |
10 |
disouc($word); |
| 635 |
ulpfr |
13 |
$trword = isotr($word); |
| 636 |
|
|
disotr($word); |
| 637 |
|
|
$word = stop($word); |
| 638 |
|
|
$word = grundform($word); |
| 639 |
ulpfr |
10 |
|
| 640 |
ulpfr |
13 |
@words = WAIT::Filter::split($word); |
| 641 |
|
|
@words = WAIT::Filter::split2($word); |
| 642 |
|
|
@words = WAIT::Filter::split3($word); |
| 643 |
|
|
@words = WAIT::Filter::split4($word); # arbitrary numbers allowed |
| 644 |
|
|
|
| 645 |
ulpfr |
10 |
=head1 DESCRIPTION |
| 646 |
|
|
|
| 647 |
|
|
This tiny modules gives access to the basic reduction functions build |
| 648 |
|
|
in B<freeWAIS-sf>. |
| 649 |
|
|
|
| 650 |
|
|
=over 5 |
| 651 |
|
|
|
| 652 |
|
|
=item B<Stem>(I<word>) |
| 653 |
|
|
|
| 654 |
|
|
reduces I<word> using the well know Porter algorithm. |
| 655 |
|
|
|
| 656 |
|
|
AU: Porter, M.F. |
| 657 |
|
|
TI: An Algorithm for Suffix Stripping |
| 658 |
|
|
JT: Program |
| 659 |
|
|
VO: 14 |
| 660 |
|
|
PP: 130-137 |
| 661 |
|
|
PY: 1980 |
| 662 |
|
|
PM: JUL |
| 663 |
|
|
|
| 664 |
|
|
=item B<Soundex>(I<word>) |
| 665 |
|
|
|
| 666 |
|
|
|
| 667 |
|
|
computes the 4 byte B<Soundex> code for I<word>. |
| 668 |
|
|
|
| 669 |
|
|
AU: Gadd, T.N. |
| 670 |
|
|
TI: 'Fisching for Werds'. Phonetic Retrieval of written text in |
| 671 |
|
|
Information Retrieval Systems |
| 672 |
|
|
JT: Program |
| 673 |
|
|
VO: 22 |
| 674 |
|
|
NO: 3 |
| 675 |
|
|
PP: 222-237 |
| 676 |
|
|
PY: 1988 |
| 677 |
|
|
|
| 678 |
|
|
|
| 679 |
|
|
=item B<Phonix>(I<word>) |
| 680 |
|
|
|
| 681 |
|
|
computes the 8 byte B<Phonix> code for I<word>. |
| 682 |
|
|
|
| 683 |
|
|
AU: Gadd, T.N. |
| 684 |
|
|
TI: PHONIX: The Algorithm |
| 685 |
|
|
JT: Program |
| 686 |
|
|
VO: 24 |
| 687 |
|
|
NO: 4 |
| 688 |
|
|
PP: 363-366 |
| 689 |
|
|
PY: 1990 |
| 690 |
|
|
PM: OCT |
| 691 |
|
|
|
| 692 |
dpavlin |
109 |
=back |
| 693 |
|
|
|
| 694 |
ulpfr |
10 |
=head1 ISO charcater case functions |
| 695 |
|
|
|
| 696 |
|
|
There are some additional function which transpose some/most ISOlatin1 |
| 697 |
|
|
characters to upper and lower case. To allow for maximum speed there |
| 698 |
|
|
are also I<destructive> versions which change the argument instead of |
| 699 |
|
|
allocating a copy which is returned. For convenience, the destructive |
| 700 |
ulpfr |
13 |
version also B<returns> the argument. So all of the following is |
| 701 |
ulpfr |
10 |
valid and C<$word> will contain the lowercased string. |
| 702 |
|
|
|
| 703 |
ulpfr |
13 |
$word = isolc($word); |
| 704 |
ulpfr |
10 |
$word = disolc($word); |
| 705 |
|
|
disolc($word); |
| 706 |
|
|
|
| 707 |
|
|
Here are the hardcoded characters which are recognized: |
| 708 |
|
|
|
| 709 |
|
|
abcdefghijklmnopqrstuvwxyzàáâãäåæçèéêëìíîïñòóôõöøùúûüýß |
| 710 |
|
|
ABCDEFGHIJKLMNOPQRSTUVWXYZÀÁÂÃÄÅÆÇÈÉÊËÌÍÎÏÑÒÓÔÕÖØÙÚÛÜÝß |
| 711 |
|
|
|
| 712 |
dpavlin |
109 |
=over 5 |
| 713 |
|
|
|
| 714 |
ulpfr |
10 |
=item C<$new = >B<isolc>C<($word)> |
| 715 |
|
|
|
| 716 |
|
|
=item B<disolc>C<($word)> |
| 717 |
|
|
|
| 718 |
|
|
transposes to lower case. |
| 719 |
|
|
|
| 720 |
|
|
=item C<$new = >B<isouc>C<($word)> |
| 721 |
|
|
|
| 722 |
|
|
=item B<disouc>C<($word)> |
| 723 |
|
|
|
| 724 |
|
|
transposes to upper case. |
| 725 |
|
|
|
| 726 |
ulpfr |
13 |
=item C<$new = >B<isotr>C<($word)> |
| 727 |
|
|
|
| 728 |
|
|
=item B<disotr>C<($word)> |
| 729 |
|
|
|
| 730 |
|
|
Remove non-letters according to the above table. |
| 731 |
|
|
|
| 732 |
|
|
=item C<$new = >B<stop>C<($word)> |
| 733 |
|
|
|
| 734 |
|
|
Returns an empty string if $word is a stopword. |
| 735 |
|
|
|
| 736 |
|
|
=item C<$new = >B<grundform>C<($word)> |
| 737 |
|
|
|
| 738 |
|
|
Calls Text::German::reduce |
| 739 |
|
|
|
| 740 |
|
|
=item C<$new = >B<utf8iso>C<($word)> |
| 741 |
|
|
|
| 742 |
laperla |
32 |
Deprecated due to flux in perl versions between 5.005 and 5.8. The |
| 743 |
|
|
function converts UTF8 encoded strings to ISO-8859-1. WAIT is |
| 744 |
|
|
internally still based on the Latin1 character set, so if you process |
| 745 |
ulpfr |
13 |
anything in a different encoding, you should convert to Latin1 as the |
| 746 |
laperla |
32 |
first filter or refrain from using the iso-latin-1 based filter |
| 747 |
|
|
functions. It is recommended that you use your own converter based on |
| 748 |
|
|
the perl version you're using. |
| 749 |
ulpfr |
13 |
|
| 750 |
|
|
=item split, split2, split3, ... |
| 751 |
|
|
|
| 752 |
|
|
The splitN funtions all take a scalar as input and return a list of |
| 753 |
|
|
words. Split acts just like the perl split(' '). Split2 eliminates all |
| 754 |
|
|
words from the list that are shorter than 2 characters (bytes), split3 |
| 755 |
|
|
eliminates those shorter than 3 characters (bytes) and so on. |
| 756 |
|
|
|
| 757 |
dpavlin |
109 |
=back |
| 758 |
|
|
|
| 759 |
ulpfr |
10 |
=head1 AUTHOR |
| 760 |
|
|
|
| 761 |
|
|
Ulrich Pfeifer E<lt>F<pfeifer@ls6.informatik.uni-dortmund.de>E<gt> |
| 762 |
|
|
|
| 763 |
|
|
=head1 SEE ALSO |
| 764 |
|
|
|
| 765 |
|
|
perl(1). |
| 766 |
|
|
|
| 767 |
|
|
=cut |
| 768 |
|
|
|
Parent Directory
| 
Revision Log