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// Copyright 2017 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 markup
import (
"bytes"
"fmt"
"html"
"strings"
"code.gitea.io/gitea/modules/log"
"code.gitea.io/gitea/modules/markup"
"code.gitea.io/gitea/modules/util"
"github.com/niklasfasching/go-org/org"
)
func init() {
markup.RegisterParser(Parser{})
}
// Parser implements markup.Parser for orgmode
type Parser struct {
}
// Name implements markup.Parser
func (Parser) Name() string {
return "orgmode"
}
// Extensions implements markup.Parser
func (Parser) Extensions() []string {
return []string{".org"}
}
// Render renders orgmode rawbytes to HTML
func Render(rawBytes []byte, urlPrefix string, metas map[string]string, isWiki bool) []byte {
htmlWriter := org.NewHTMLWriter()
renderer := &Renderer{
HTMLWriter: htmlWriter,
URLPrefix: urlPrefix,
IsWiki: isWiki,
}
htmlWriter.ExtendingWriter = renderer
res, err := org.New().Silent().Parse(bytes.NewReader(rawBytes), "").Write(renderer)
if err != nil {
log.Error("Panic in orgmode.Render: %v Just returning the rawBytes", err)
return rawBytes
}
return []byte(res)
}
// RenderString reners orgmode string to HTML string
func RenderString(rawContent string, urlPrefix string, metas map[string]string, isWiki bool) string {
return string(Render([]byte(rawContent), urlPrefix, metas, isWiki))
}
// Render reners orgmode string to HTML string
func (Parser) Render(rawBytes []byte, urlPrefix string, metas map[string]string, isWiki bool) []byte {
return Render(rawBytes, urlPrefix, metas, isWiki)
}
// Renderer implements org.Writer
type Renderer struct {
*org.HTMLWriter
URLPrefix string
IsWiki bool
}
var byteMailto = []byte("mailto:")
// WriteRegularLink renders images, links or videos
func (r *Renderer) WriteRegularLink(l org.RegularLink) {
link := []byte(html.EscapeString(l.URL))
if l.Protocol == "file" {
link = link[len("file:"):]
}
if len(link) > 0 && !markup.IsLink(link) &&
link[0] != '#' && !bytes.HasPrefix(link, byteMailto) {
lnk := string(link)
if r.IsWiki {
lnk = util.URLJoin("wiki", lnk)
}
link = []byte(util.URLJoin(r.URLPrefix, lnk))
}
description := string(link)
if l.Description != nil {
description = r.WriteNodesAsString(l.Description...)
}
switch l.Kind() {
case "image":
imageSrc := getMediaURL(link)
fmt.Fprintf(r, `<img src="%s" alt="%s" title="%s" />`, imageSrc, description, description)
case "video":
videoSrc := getMediaURL(link)
fmt.Fprintf(r, `<video src="%s" title="%s">%s</video>`, videoSrc, description, description)
default:
fmt.Fprintf(r, `<a href="%s" title="%s">%s</a>`, link, description, description)
}
}
func getMediaURL(l []byte) string {
srcURL := string(l)
// Check if link is valid
if len(srcURL) > 0 && !markup.IsLink(l) {
srcURL = strings.Replace(srcURL, "/src/", "/media/", 1)
}
return srcURL
}
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