mirror of https://github.com/go-gitea/gitea
109 lines
2.4 KiB
Go
109 lines
2.4 KiB
Go
// Copyright 2022 The Gitea Authors. All rights reserved.
|
|
// Use of this source code is governed by a MIT-style
|
|
// license that can be found in the LICENSE file.
|
|
|
|
package math
|
|
|
|
import (
|
|
"github.com/yuin/goldmark"
|
|
"github.com/yuin/goldmark/parser"
|
|
"github.com/yuin/goldmark/renderer"
|
|
"github.com/yuin/goldmark/util"
|
|
)
|
|
|
|
// Extension is a math extension
|
|
type Extension struct {
|
|
enabled bool
|
|
parseDollarInline bool
|
|
parseDollarBlock bool
|
|
}
|
|
|
|
// Option is the interface Options should implement
|
|
type Option interface {
|
|
SetOption(e *Extension)
|
|
}
|
|
|
|
type extensionFunc func(e *Extension)
|
|
|
|
func (fn extensionFunc) SetOption(e *Extension) {
|
|
fn(e)
|
|
}
|
|
|
|
// Enabled enables or disables this extension
|
|
func Enabled(enable ...bool) Option {
|
|
value := true
|
|
if len(enable) > 0 {
|
|
value = enable[0]
|
|
}
|
|
return extensionFunc(func(e *Extension) {
|
|
e.enabled = value
|
|
})
|
|
}
|
|
|
|
// WithInlineDollarParser enables or disables the parsing of $...$
|
|
func WithInlineDollarParser(enable ...bool) Option {
|
|
value := true
|
|
if len(enable) > 0 {
|
|
value = enable[0]
|
|
}
|
|
return extensionFunc(func(e *Extension) {
|
|
e.parseDollarInline = value
|
|
})
|
|
}
|
|
|
|
// WithBlockDollarParser enables or disables the parsing of $$...$$
|
|
func WithBlockDollarParser(enable ...bool) Option {
|
|
value := true
|
|
if len(enable) > 0 {
|
|
value = enable[0]
|
|
}
|
|
return extensionFunc(func(e *Extension) {
|
|
e.parseDollarBlock = value
|
|
})
|
|
}
|
|
|
|
// Math represents a math extension with default rendered delimiters
|
|
var Math = &Extension{
|
|
enabled: true,
|
|
parseDollarBlock: true,
|
|
parseDollarInline: true,
|
|
}
|
|
|
|
// NewExtension creates a new math extension with the provided options
|
|
func NewExtension(opts ...Option) *Extension {
|
|
r := &Extension{
|
|
enabled: true,
|
|
parseDollarBlock: true,
|
|
parseDollarInline: true,
|
|
}
|
|
|
|
for _, o := range opts {
|
|
o.SetOption(r)
|
|
}
|
|
return r
|
|
}
|
|
|
|
// Extend extends goldmark with our parsers and renderers
|
|
func (e *Extension) Extend(m goldmark.Markdown) {
|
|
if !e.enabled {
|
|
return
|
|
}
|
|
|
|
m.Parser().AddOptions(parser.WithBlockParsers(
|
|
util.Prioritized(NewBlockParser(e.parseDollarBlock), 701),
|
|
))
|
|
|
|
inlines := []util.PrioritizedValue{
|
|
util.Prioritized(NewInlineBracketParser(), 501),
|
|
}
|
|
if e.parseDollarInline {
|
|
inlines = append(inlines, util.Prioritized(NewInlineDollarParser(), 501))
|
|
}
|
|
m.Parser().AddOptions(parser.WithInlineParsers(inlines...))
|
|
|
|
m.Renderer().AddOptions(renderer.WithNodeRenderers(
|
|
util.Prioritized(NewBlockRenderer(), 501),
|
|
util.Prioritized(NewInlineRenderer(), 502),
|
|
))
|
|
}
|