/
apostrophe.go
41 lines (33 loc) · 1.13 KB
/
apostrophe.go
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// Copyright (c) 2020 Couchbase, Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package token
import (
"bytes"
"github.com/blugelabs/bluge/analysis"
)
const Apostrophes = string(Apostrophe) + string(RightSingleQuotationMark)
type ApostropheFilter struct{}
func NewApostropheFilter() *ApostropheFilter {
return &ApostropheFilter{}
}
func (s *ApostropheFilter) Filter(input analysis.TokenStream) analysis.TokenStream {
for _, token := range input {
firstApostrophe := bytes.IndexAny(token.Term, Apostrophes)
if firstApostrophe >= 0 {
// found an apostrophe
token.Term = token.Term[0:firstApostrophe]
}
}
return input
}