forked from NYANDEV/forgejo
Search bar for issues/pulls (#530)
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195 changed files with 221830 additions and 60 deletions
94
vendor/github.com/blevesearch/bleve/search/query/regexp.go
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vendored
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94
vendor/github.com/blevesearch/bleve/search/query/regexp.go
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// Copyright (c) 2014 Couchbase, Inc.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package query
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import (
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"regexp"
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"strings"
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"github.com/blevesearch/bleve/index"
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"github.com/blevesearch/bleve/mapping"
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"github.com/blevesearch/bleve/search"
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"github.com/blevesearch/bleve/search/searcher"
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)
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type RegexpQuery struct {
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Regexp string `json:"regexp"`
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FieldVal string `json:"field,omitempty"`
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BoostVal *Boost `json:"boost,omitempty"`
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compiled *regexp.Regexp
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}
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// NewRegexpQuery creates a new Query which finds
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// documents containing terms that match the
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// specified regular expression.
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func NewRegexpQuery(regexp string) *RegexpQuery {
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return &RegexpQuery{
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Regexp: regexp,
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}
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}
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func (q *RegexpQuery) SetBoost(b float64) {
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boost := Boost(b)
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q.BoostVal = &boost
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}
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func (q *RegexpQuery) Boost() float64{
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return q.BoostVal.Value()
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}
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func (q *RegexpQuery) SetField(f string) {
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q.FieldVal = f
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}
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func (q *RegexpQuery) Field() string{
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return q.FieldVal
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}
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func (q *RegexpQuery) Searcher(i index.IndexReader, m mapping.IndexMapping, explain bool) (search.Searcher, error) {
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field := q.FieldVal
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if q.FieldVal == "" {
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field = m.DefaultSearchField()
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}
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err := q.compile()
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if err != nil {
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return nil, err
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}
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return searcher.NewRegexpSearcher(i, q.compiled, field, q.BoostVal.Value(), explain)
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}
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func (q *RegexpQuery) Validate() error {
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return q.compile()
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}
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func (q *RegexpQuery) compile() error {
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if q.compiled == nil {
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// require that pattern be anchored to start and end of term
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actualRegexp := q.Regexp
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if !strings.HasPrefix(actualRegexp, "^") {
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actualRegexp = "^" + actualRegexp
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}
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if !strings.HasSuffix(actualRegexp, "$") {
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actualRegexp = actualRegexp + "$"
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}
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var err error
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q.compiled, err = regexp.Compile(actualRegexp)
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if err != nil {
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return err
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}
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}
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return nil
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}
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