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html: Support links with image descriptions

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Turns out Org mode supports image links natively and we don't have to go out of
spec!

From https://orgmode.org/manual/Images-in-HTML-export.html:

[...] if the description part of the Org link is itself another link, such as
‘file:’ or ‘http:’ URL pointing to an image, the HTML export back-end in-lines
this image and links to [...]
This commit is contained in:
Niklas Fasching 2020-06-28 21:00:35 +02:00
parent c536adf6e9
commit d85768891c
5 changed files with 33 additions and 10 deletions
Download patch file Download diff file Expand all files Collapse all files

22
org/html_writer.go
View file

@ -341,16 +341,26 @@ func (w *HTMLWriter) WriteRegularLink(l RegularLink) {
if prefix := w.document.Links[l.Protocol]; prefix != "" {
url = html.EscapeString(prefix) + strings.TrimPrefix(url, l.Protocol+":")
}
description := url
if l.Description != nil {
description = w.WriteNodesAsString(l.Description...)
}
switch l.Kind() {
case "image":
w.WriteString(fmt.Sprintf(`<img src="%s" alt="%s" title="%s" />`, url, description, description))
if l.Description == nil {
w.WriteString(fmt.Sprintf(`<img src="%s" alt="%s" title="%s" />`, url, url, url))
} else {
description := strings.TrimPrefix(String(l.Description), "file:")
w.WriteString(fmt.Sprintf(`<a href="%s"><img src="%s" alt="%s" /></a>`, url, description, description))
}
case "video":
w.WriteString(fmt.Sprintf(`<video src="%s" title="%s">%s</video>`, url, description, description))
if l.Description == nil {
w.WriteString(fmt.Sprintf(`<video src="%s" title="%s">%s</video>`, url, url, url))
} else {
description := strings.TrimPrefix(String(l.Description), "file:")
w.WriteString(fmt.Sprintf(`<a href="%s"><video src="%s" title="%s"></video></a>`, url, description, description))
}
default:
description := url
if l.Description != nil {
description = w.WriteNodesAsString(l.Description...)
}
w.WriteString(fmt.Sprintf(`<a href="%s">%s</a>`, url, description))
}
}