110 lines
2.7 KiB
Go
110 lines
2.7 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 ansi
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import (
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"github.com/blevesearch/bleve/registry"
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"github.com/blevesearch/bleve/search/highlight"
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)
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const Name = "ansi"
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const DefaultAnsiHighlight = BgYellow
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type FragmentFormatter struct {
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color string
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}
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func NewFragmentFormatter(color string) *FragmentFormatter {
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return &FragmentFormatter{
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color: color,
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}
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}
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func (a *FragmentFormatter) Format(f *highlight.Fragment, orderedTermLocations highlight.TermLocations) string {
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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 == nil {
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continue
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}
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// make sure the array positions match
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if !termLocation.ArrayPositions.Equals(f.ArrayPositions) {
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continue
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}
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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.color
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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 += Reset
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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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// ANSI color control escape sequences.
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// Shamelessly copied from https://github.com/sqp/godock/blob/master/libs/log/colors.go
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const (
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Reset = "\x1b[0m"
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Bright = "\x1b[1m"
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Dim = "\x1b[2m"
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Underscore = "\x1b[4m"
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Blink = "\x1b[5m"
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Reverse = "\x1b[7m"
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Hidden = "\x1b[8m"
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FgBlack = "\x1b[30m"
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FgRed = "\x1b[31m"
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FgGreen = "\x1b[32m"
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FgYellow = "\x1b[33m"
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FgBlue = "\x1b[34m"
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FgMagenta = "\x1b[35m"
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FgCyan = "\x1b[36m"
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FgWhite = "\x1b[37m"
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BgBlack = "\x1b[40m"
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BgRed = "\x1b[41m"
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BgGreen = "\x1b[42m"
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BgYellow = "\x1b[43m"
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BgBlue = "\x1b[44m"
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BgMagenta = "\x1b[45m"
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BgCyan = "\x1b[46m"
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BgWhite = "\x1b[47m"
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)
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func Constructor(config map[string]interface{}, cache *registry.Cache) (highlight.FragmentFormatter, error) {
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color := DefaultAnsiHighlight
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colorVal, ok := config["color"].(string)
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if ok {
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color = colorVal
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}
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return NewFragmentFormatter(color), 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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