Implement #+LINK

org/document.go

@@ -36,6 +36,7 @@ type Document struct {
 	Path           string // Path of the file containing the parse input - used to resolve relative paths during parsing (e.g. INCLUDE).
 	tokens         []token
 	baseLvl        int
+	Links          map[string]string
 	Nodes          []Node
 	NamedNodes     map[string]Node
 	Outline        Outline           // Outline is a Table Of Contents for the document and contains all sections (headline + content).
@@ -121,6 +122,7 @@ func (c *Configuration) Parse(input io.Reader, path string) (d *Document) {
 		Outline:        Outline{outlineSection, outlineSection, 0},
 		BufferSettings: map[string]string{},
 		NamedNodes:     map[string]Node{},
+		Links:          map[string]string{},
 		Path:           path,
 	}
 	defer func() {

org/html_writer.go

@@ -338,6 +338,9 @@ func (w *HTMLWriter) WriteRegularLink(l RegularLink) {
 	if l.Protocol == "file" {
 		url = url[len("file:"):]
 	}
+	if prefix := w.document.Links[l.Protocol]; prefix != "" {
+		url = html.EscapeString(prefix) + url[len(l.Protocol)+1:]
+	}
 	description := url
 	if l.Description != nil {
 		description = w.WriteNodesAsString(l.Description...)

org/keyword.go

@@ -62,6 +62,11 @@ func (d *Document) parseKeyword(i int, stop stopFn) (int, Node) {
 		return d.loadSetupFile(k)
 	case "INCLUDE":
 		return d.parseInclude(k)
+	case "LINK":
+		if parts := strings.Split(k.Value, " "); len(parts) >= 2 {
+			d.Links[parts[0]] = parts[1]
+		}
+		return 1, k
 	case "CAPTION", "ATTR_HTML":
 		consumed, node := d.parseAffiliated(i, stop)
 		if consumed != 0 {

org/testdata/inline.html

@@ -165,4 +165,9 @@ timestamps
 </li>
 </ul>
 </li>
+<li>
+<p>
+<code class="verbatim">#+LINK</code> based links: <a href="https://www.example.com/foobar">https://www.example.com/foobar</a>
+</p>
+</li>
 </ul>

org/testdata/inline.org

@@ -37,3 +37,5 @@
   - <2019-01-06 Sun 18:00 +1w>
   - <2019-01-06 18:00>
   - <2019-01-06 18:00 +1w>
+- =#+LINK= based links: [[example:foobar]]
+  #+LINK: example https://www.example.com/

org/testdata/inline.pretty_org

@@ -37,3 +37,5 @@
   - <2019-01-06 Sun 18:00 +1w>
   - <2019-01-06 Sun 18:00>
   - <2019-01-06 Sun 18:00 +1w>
+- =#+LINK= based links: [[example:foobar]]
+  #+LINK: example https://www.example.com/