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// Copyright 2023 The Gitea Authors. All rights reserved.
// SPDX-License-Identifier: MIT
package asciicast
import (
"fmt"
"io"
"net/url"
"regexp"
"code.gitea.io/gitea/modules/markup"
"code.gitea.io/gitea/modules/setting"
)
func init() {
markup.RegisterRenderer(Renderer{})
}
// Renderer implements markup.Renderer for asciicast files.
// See https://github.com/asciinema/asciinema/blob/develop/doc/asciicast-v2.md
type Renderer struct{}
// Name implements markup.Renderer
func (Renderer) Name() string {
return "asciicast"
}
// Extensions implements markup.Renderer
func (Renderer) Extensions() []string {
return []string{".cast"}
}
const (
playerClassName = "asciinema-player-container"
playerSrcAttr = "data-asciinema-player-src"
)
// SanitizerRules implements markup.Renderer
func (Renderer) SanitizerRules() []setting.MarkupSanitizerRule {
return []setting.MarkupSanitizerRule{
{Element: "div", AllowAttr: "class", Regexp: regexp.MustCompile(playerClassName)},
{Element: "div", AllowAttr: playerSrcAttr},
}
}
// Render implements markup.Renderer
func (Renderer) Render(ctx *markup.RenderContext, _ io.Reader, output io.Writer) error {
rawURL := fmt.Sprintf("%s/%s/%s/raw/%s/%s",
setting.AppSubURL,
url.PathEscape(ctx.Metas["user"]),
url.PathEscape(ctx.Metas["repo"]),
ctx.Metas["BranchNameSubURL"],
url.PathEscape(ctx.RelativePath),
)
_, err := io.WriteString(output, fmt.Sprintf(
`<div class="%s" %s="%s"></div>`,
playerClassName,
playerSrcAttr,
rawURL,
))
return err
}
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