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58 lines
1.4 KiB
Go
58 lines
1.4 KiB
Go
// 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 html
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import (
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"bytes"
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"regexp"
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"github.com/blevesearch/bleve/v2/analysis"
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"github.com/blevesearch/bleve/v2/registry"
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)
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const Name = "html"
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var htmlCharFilterRegexp = regexp.MustCompile(`</?[!\w]+((\s+\w+(\s*=\s*(?:".*?"|'.*?'|[^'">\s]+))?)+\s*|\s*)/?>`)
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type CharFilter struct {
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r *regexp.Regexp
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replacement []byte
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}
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func New() *CharFilter {
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return &CharFilter{
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r: htmlCharFilterRegexp,
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replacement: []byte(" "),
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}
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}
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func (s *CharFilter) Filter(input []byte) []byte {
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return s.r.ReplaceAllFunc(
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input, func(in []byte) []byte {
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return bytes.Repeat(s.replacement, len(in))
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})
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}
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func CharFilterConstructor(config map[string]interface{}, cache *registry.Cache) (analysis.CharFilter, error) {
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return New(), nil
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}
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func init() {
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err := registry.RegisterCharFilter(Name, CharFilterConstructor)
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if err != nil {
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panic(err)
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}
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}
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