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0f8dc47037
It has been deprecated for a long time, its v1 version is not maintained anymore, and there are many known issues. Goldmark should be a mature replacement by now. Closes #9934
39 lines
1.5 KiB
Go
39 lines
1.5 KiB
Go
// Copyright 2022 The Hugo Authors. All rights reserved.
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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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// 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 blackfriday holds some copmpability functions for the old Blackfriday v1 Markdown engine.
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package blackfriday
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import "unicode"
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// SanitizedAnchorName is how Blackfriday sanitizes anchor names.
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// Implementation borrowed from https://github.com/russross/blackfriday/blob/a477dd1646916742841ed20379f941cfa6c5bb6f/block.go#L1464
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// Note that Hugo removed its Blackfriday support in v0.100.0, but you can still use this strategy for
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// auto ID generation.
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func SanitizedAnchorName(text string) string {
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var anchorName []rune
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futureDash := false
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for _, r := range text {
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switch {
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case unicode.IsLetter(r) || unicode.IsNumber(r):
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if futureDash && len(anchorName) > 0 {
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anchorName = append(anchorName, '-')
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}
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futureDash = false
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anchorName = append(anchorName, unicode.ToLower(r))
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default:
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futureDash = true
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}
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}
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return string(anchorName)
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}
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