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|
package btelegram
import (
"bytes"
"html"
"github.com/russross/blackfriday"
)
type customHTML struct {
blackfriday.Renderer
}
func (options *customHTML) Paragraph(out *bytes.Buffer, text func() bool) {
marker := out.Len()
if !text() {
out.Truncate(marker)
return
}
out.WriteString("\n")
}
func (options *customHTML) BlockCode(out *bytes.Buffer, text []byte, lang string) {
out.WriteString("<pre>")
out.WriteString(html.EscapeString(string(text)))
out.WriteString("</pre>\n")
}
func (options *customHTML) Header(out *bytes.Buffer, text func() bool, level int, id string) {
options.Paragraph(out, text)
}
func (options *customHTML) HRule(out *bytes.Buffer) {
out.WriteByte('\n')
}
func (options *customHTML) BlockQuote(out *bytes.Buffer, text []byte) {
out.WriteString("> ")
out.Write(text)
out.WriteByte('\n')
}
func (options *customHTML) List(out *bytes.Buffer, text func() bool, flags int) {
options.Paragraph(out, text)
}
func (options *customHTML) ListItem(out *bytes.Buffer, text []byte, flags int) {
out.WriteString("- ")
out.Write(text)
out.WriteByte('\n')
}
func makeHTML(input string) string {
extensions := blackfriday.NoIntraEmphasis |
blackfriday.FencedCode |
blackfriday.Autolink |
blackfriday.SpaceHeadings |
blackfriday.HeadingIDs |
blackfriday.BackslashLineBreak |
blackfriday.DefinitionLists
renderer := &customHTML{blackfriday.NewHTMLRenderer(blackfriday.HTMLRendererParameters{
Flags: blackfriday.UseXHTML | blackfriday.SkipImages,
})}
return string(blackfriday.Run([]byte(input), blackfriday.WithExtensions(extensions), blackfriday.WithRenderer(renderer)))
}
|
