91 lines
2.1 KiB
Go
91 lines
2.1 KiB
Go
// +build ignore
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// This example illustrates a gemtext to HTML converter.
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package main
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import (
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"fmt"
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"html"
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"strings"
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"git.sr.ht/~adnano/go-gemini"
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)
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func main() {
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text := gemini.Text{
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gemini.LineHeading1("Hello, world!"),
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gemini.LineText("This is a gemini text document."),
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}
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html := textToHTML(text)
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fmt.Print(html)
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}
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// textToHTML returns the Gemini text response as HTML.
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func textToHTML(text gemini.Text) string {
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var b strings.Builder
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var pre bool
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var list bool
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for _, l := range text {
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if _, ok := l.(gemini.LineListItem); ok {
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if !list {
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list = true
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fmt.Fprint(&b, "<ul>\n")
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}
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} else if list {
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list = false
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fmt.Fprint(&b, "</ul>\n")
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}
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switch l.(type) {
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case gemini.LineLink:
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link := l.(gemini.LineLink)
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url := html.EscapeString(link.URL)
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name := html.EscapeString(link.Name)
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if name == "" {
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name = url
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}
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fmt.Fprintf(&b, "<p><a href='%s'>%s</a></p>\n", url, name)
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case gemini.LinePreformattingToggle:
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pre = !pre
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if pre {
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fmt.Fprint(&b, "<pre>\n")
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} else {
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fmt.Fprint(&b, "</pre>\n")
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}
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case gemini.LinePreformattedText:
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text := string(l.(gemini.LinePreformattedText))
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fmt.Fprintf(&b, "%s\n", html.EscapeString(text))
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case gemini.LineHeading1:
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text := string(l.(gemini.LineHeading1))
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fmt.Fprintf(&b, "<h1>%s</h1>\n", html.EscapeString(text))
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case gemini.LineHeading2:
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text := string(l.(gemini.LineHeading2))
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fmt.Fprintf(&b, "<h2>%s</h2>\n", html.EscapeString(text))
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case gemini.LineHeading3:
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text := string(l.(gemini.LineHeading3))
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fmt.Fprintf(&b, "<h3>%s</h3>\n", html.EscapeString(text))
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case gemini.LineListItem:
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text := string(l.(gemini.LineListItem))
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fmt.Fprintf(&b, "<li>%s</li>\n", html.EscapeString(text))
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case gemini.LineQuote:
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text := string(l.(gemini.LineQuote))
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fmt.Fprintf(&b, "<blockquote>%s</blockquote>\n", html.EscapeString(text))
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case gemini.LineText:
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text := string(l.(gemini.LineText))
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if text == "" {
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fmt.Fprint(&b, "<br>\n")
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} else {
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fmt.Fprintf(&b, "<p>%s</p>\n", html.EscapeString(text))
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}
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}
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}
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if pre {
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fmt.Fprint(&b, "</pre>\n")
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}
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if list {
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fmt.Fprint(&b, "</ul>\n")
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}
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return b.String()
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}
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