2ee7289bc8
this started initially to relocate highlighting into a self contained package, which would then also use the registry however, it turned into a much larger refactor in order to avoid cyclic imports now facets, searchers, scorers and collectors are also broken out into subpackages of search
80 lines
2.2 KiB
Go
80 lines
2.2 KiB
Go
// Copyright (c) 2014 Couchbase, Inc.
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// Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file
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// except in compliance with the License. You may obtain a copy of the License at
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// http://www.apache.org/licenses/LICENSE-2.0
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// Unless required by applicable law or agreed to in writing, software distributed under the
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// License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND,
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// either express or implied. See the License for the specific language governing permissions
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// and limitations under the License.
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package html
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import (
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"github.com/blevesearch/bleve/registry"
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"github.com/blevesearch/bleve/search"
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"github.com/blevesearch/bleve/search/highlight"
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)
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const Name = "html"
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const defaultHtmlHighlightBefore = "<b>"
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const defaultHtmlHighlightAfter = "</b>"
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type HTMLFragmentFormatter struct {
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before string
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after string
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}
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func NewHTMLFragmentFormatter(before, after string) *HTMLFragmentFormatter {
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return &HTMLFragmentFormatter{
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before: before,
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after: after,
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}
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}
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func (a *HTMLFragmentFormatter) Format(f *highlight.Fragment, tlm search.TermLocationMap) string {
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orderedTermLocations := highlight.OrderTermLocations(tlm)
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rv := ""
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curr := f.Start
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for _, termLocation := range orderedTermLocations {
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if termLocation.Start < curr {
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continue
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}
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if termLocation.End > f.End {
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break
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}
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// add the stuff before this location
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rv += string(f.Orig[curr:termLocation.Start])
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// add the color
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rv += a.before
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// add the term itself
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rv += string(f.Orig[termLocation.Start:termLocation.End])
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// reset the color
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rv += a.after
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// update current
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curr = termLocation.End
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}
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// add any remaining text after the last token
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rv += string(f.Orig[curr:f.End])
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return rv
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}
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func Constructor(config map[string]interface{}, cache *registry.Cache) (highlight.FragmentFormatter, error) {
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before := defaultHtmlHighlightBefore
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beforeVal, ok := config["before"].(string)
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if ok {
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before = beforeVal
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}
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after := defaultHtmlHighlightAfter
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afterVal, ok := config["after"].(string)
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if ok {
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after = afterVal
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}
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return NewHTMLFragmentFormatter(before, after), nil
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}
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func init() {
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registry.RegisterFragmentFormatter(Name, Constructor)
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}
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