41 lines
1.2 KiB
Go
41 lines
1.2 KiB
Go
// Copyright (c) 2014 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 regexp_tokenizer
|
|
|
|
import (
|
|
"regexp"
|
|
|
|
"github.com/couchbaselabs/bleve/analysis"
|
|
)
|
|
|
|
type RegexpTokenizer struct {
|
|
r *regexp.Regexp
|
|
}
|
|
|
|
func NewRegexpTokenizer(r *regexp.Regexp) *RegexpTokenizer {
|
|
return &RegexpTokenizer{
|
|
r: r,
|
|
}
|
|
}
|
|
|
|
func (rt *RegexpTokenizer) Tokenize(input []byte) analysis.TokenStream {
|
|
matches := rt.r.FindAllIndex(input, -1)
|
|
rv := make(analysis.TokenStream, len(matches))
|
|
for i, match := range matches {
|
|
token := analysis.Token{
|
|
Term: input[match[0]:match[1]],
|
|
Start: match[0],
|
|
End: match[1],
|
|
Position: i + 1,
|
|
}
|
|
rv[i] = &token
|
|
}
|
|
return rv
|
|
}
|