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.\" ========================================================================
.\"
.IX Title "Lucy::Analysis::Normalizer 3pm"
.TH Lucy::Analysis::Normalizer 3pm "2015-03-06" "perl v5.20.2" "User Contributed Perl Documentation"
.\" For nroff, turn off justification.  Always turn off hyphenation; it makes
.\" way too many mistakes in technical documents.
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.SH "NAME"
Lucy::Analysis::Normalizer \- Unicode normalization, case folding and accent stripping
.PP
Normalizer is an Analyzer which normalizes
tokens to one of the Unicode normalization forms.
.SH "SYNOPSIS"
.IX Header "SYNOPSIS"
.Vb 1
\&    my $normalizer = Lucy::Analysis::Normalizer\->new;
\&    
\&    my $polyanalyzer = Lucy::Analysis::PolyAnalyzer\->new(
\&        analyzers => [ $normalizer, $tokenizer, $stemmer ],
\&    );
.Ve
.SH "DESCRIPTION"
.IX Header "DESCRIPTION"
Optionally, it
performs Unicode case folding and converts accented characters to their
base character.
.PP
If you use highlighting, Normalizer should be run after tokenization
because it might add or remove characters.
.SH "CONSTRUCTORS"
.IX Header "CONSTRUCTORS"
.SS "new( \fI[labeled params]\fP )"
.IX Subsection "new( [labeled params] )"
.Vb 5
\&    my $normalizer = Lucy::Analysis::Normalizer\->new(
\&        normalization_form => \*(AqNFKC\*(Aq,
\&        case_fold          => 1,
\&        strip_accents      => 0,
\&    );
.Ve
.IP "\(bu" 4
\&\fBnormalization_form\fR \- Unicode normalization form, can be one of
\&'\s-1NFC\s0', '\s-1NFKC\s0', '\s-1NFD\s0', '\s-1NFKD\s0'. Defaults to '\s-1NFKC\s0'.
.IP "\(bu" 4
\&\fBcase_fold\fR \- Perform case folding, default is true.
.IP "\(bu" 4
\&\fBstrip_accents\fR \- Strip accents, default is false.
.SH "INHERITANCE"
.IX Header "INHERITANCE"
Lucy::Analysis::Normalizer isa Lucy::Analysis::Analyzer isa Lucy::Object::Obj.