fix orgmode media link resolving

Author: wxiaoguang

modules/markup/orgmode/orgmode.go

@@ -133,42 +133,50 @@ type Writer struct {
 	Ctx *markup.RenderContext
 }
 
-const mailto = "mailto:"
-
-func (r *Writer) resolveLink(link string) string {
+func (r *Writer) resolveLink(kind string, link string) string {
 	link = strings.TrimPrefix(link, "file:")
-	if len(link) > 0 && !markup.IsLinkStr(link) &&
-		link[0] != '#' && !strings.HasPrefix(link, mailto) {
-		link = util.URLJoin(r.Ctx.Links.ResolveMediaLink(r.Ctx.IsWiki), link)
+	if !strings.HasPrefix(link, "#") && // not a URL fragment
+		!markup.IsLinkStr(link) && // not an absolute URL
+		!strings.HasPrefix(link, "mailto:") {
+		if kind == "regular" {
+			// orgmode reports the link kind as "regular" for "[[ImageLink.svg][The Image Desc]]"
+			// so we need to try to guess the link kind again here
+			kind = org.RegularLink{URL: link}.Kind()
+		}
+		base := r.Ctx.Links.Base
+		if kind == "image" || kind == "video" {
+			base = r.Ctx.Links.ResolveMediaLink(r.Ctx.IsWiki)
+		}
+		link = util.URLJoin(base, link)
 	}
 	return link
 }
 
 // WriteRegularLink renders images, links or videos
 func (r *Writer) WriteRegularLink(l org.RegularLink) {
-	link := r.resolveLink(l.URL)
+	link := r.resolveLink(l.Kind(), l.URL)
 
 	// Inspired by https://github.com/niklasfasching/go-org/blob/6eb20dbda93cb88c3503f7508dc78cbbc639378f/org/html_writer.go#L406-L427
 	switch l.Kind() {
 	case "image":
 		if l.Description == nil {
-			fmt.Fprintf(r, `<img src="%s" alt="%s" />`, link, link)
+			_, _ = fmt.Fprintf(r, `<img src="%s" alt="%s" />`, link, link)
 		} else {
-			imageSrc := r.resolveLink(org.String(l.Description...))
-			fmt.Fprintf(r, `<a href="%s"><img src="%s" alt="%s" /></a>`, link, imageSrc, imageSrc)
+			imageSrc := r.resolveLink(l.Kind(), org.String(l.Description...))
+			_, _ = fmt.Fprintf(r, `<a href="%s"><img src="%s" alt="%s" /></a>`, link, imageSrc, imageSrc)
 		}
 	case "video":
 		if l.Description == nil {
-			fmt.Fprintf(r, `<video src="%s">%s</video>`, link, link)
+			_, _ = fmt.Fprintf(r, `<video src="%s">%s</video>`, link, link)
 		} else {
-			videoSrc := r.resolveLink(org.String(l.Description...))
-			fmt.Fprintf(r, `<a href="%s"><video src="%s">%s</video></a>`, link, videoSrc, videoSrc)
+			videoSrc := r.resolveLink(l.Kind(), org.String(l.Description...))
+			_, _ = fmt.Fprintf(r, `<a href="%s"><video src="%s">%s</video></a>`, link, videoSrc, videoSrc)
 		}
 	default:
 		description := link
 		if l.Description != nil {
 			description = r.WriteNodesAsString(l.Description...)
 		}
-		fmt.Fprintf(r, `<a href="%s">%s</a>`, link, description)
+		_, _ = fmt.Fprintf(r, `<a href="%s">%s</a>`, link, description)
 	}
 }

modules/markup/orgmode/orgmode_test.go

@@ -23,7 +23,8 @@ func TestRender_StandardLinks(t *testing.T) {
 		buffer, err := RenderString(&markup.RenderContext{
 			Ctx: git.DefaultContext,
 			Links: markup.Links{
-				Base: "/relative-path",
+				Base:       "/relative-path",
+				BranchPath: "branch/main",
 			},
 		}, input)
 		assert.NoError(t, err)
@@ -32,9 +33,10 @@ func TestRender_StandardLinks(t *testing.T) {
 
 	test("[[https://google.com/]]",
 		`<p><a href="https://google.com/">https://google.com/</a></p>`)
-
-	test("[[WikiPage][The WikiPage Name]]",
-		`<p><a href="/relative-path/WikiPage">The WikiPage Name</a></p>`)
+	test("[[WikiPage][The WikiPage Desc]]",
+		`<p><a href="/relative-path/WikiPage">The WikiPage Desc</a></p>`)
+	test("[[ImageLink.svg][The Image Desc]]",
+		`<p><a href="/relative-path/media/branch/main/ImageLink.svg">The Image Desc</a></p>`)
 }
 
 func TestRender_Media(t *testing.T) {