mirror of https://github.com/mautrix/go.git
63 lines
1.8 KiB
Go
63 lines
1.8 KiB
Go
// Copyright (c) 2022 Tulir Asokan
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//
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// This Source Code Form is subject to the terms of the Mozilla Public
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// License, v. 2.0. If a copy of the MPL was not distributed with this
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// file, You can obtain one at http://mozilla.org/MPL/2.0/.
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package mdext
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import (
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"github.com/yuin/goldmark"
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"github.com/yuin/goldmark/ast"
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"github.com/yuin/goldmark/parser"
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"github.com/yuin/goldmark/renderer"
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"github.com/yuin/goldmark/text"
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"github.com/yuin/goldmark/util"
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)
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type simpleSpoilerParser struct{}
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var defaultSimpleSpoilerParser = &simpleSpoilerParser{}
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func NewSimpleSpoilerParser() parser.InlineParser {
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return defaultSimpleSpoilerParser
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}
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func (s *simpleSpoilerParser) Trigger() []byte {
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return []byte{'|'}
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}
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func (s *simpleSpoilerParser) Parse(parent ast.Node, block text.Reader, pc parser.Context) ast.Node {
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// This is basically copied from https://github.com/yuin/goldmark/blob/master/extension/strikethrough.go
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before := block.PrecendingCharacter()
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line, segment := block.PeekLine()
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node := parser.ScanDelimiter(line, before, 2, defaultSpoilerDelimiterProcessor)
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if node == nil {
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return nil
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}
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node.Segment = segment.WithStop(segment.Start + node.OriginalLength)
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block.Advance(node.OriginalLength)
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pc.PushDelimiter(node)
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return node
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}
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func (s *simpleSpoilerParser) CloseBlock(parent ast.Node, pc parser.Context) {
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// nothing to do
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}
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type simpleSpoiler struct{}
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// SimpleSpoiler is an extension that allow you to use simple spoiler expression like '||text||' .
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//
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// For spoilers with reasons ('||reason|text||'), use the Spoiler extension.
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var SimpleSpoiler = &simpleSpoiler{}
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func (e *simpleSpoiler) Extend(m goldmark.Markdown) {
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m.Parser().AddOptions(parser.WithInlineParsers(
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util.Prioritized(NewSimpleSpoilerParser(), 500),
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))
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m.Renderer().AddOptions(renderer.WithNodeRenderers(
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util.Prioritized(NewSpoilerHTMLRenderer(), 500),
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))
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}
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