Groups lines from pages in backrefs

backref.go

@@ -66,7 +66,7 @@ func processBackrefs(fp *FilePages) error {
 	return err
 }
 
-func loadBackrefs(fp *FilePages, p string) ([]Backref, error) {
+func loadBackrefs(fp *FilePages, p string) (map[string][]Backref, error) {
 	refs := make(Refs)
 	p = strings.Replace(p, " ", "_", -1)
 
@@ -82,11 +82,15 @@ func loadBackrefs(fp *FilePages, p string) ([]Backref, error) {
 		return nil, err
 	}
 
-	var result []Backref
+	result := make(map[string][]Backref)
 
 	for _, ref := range refs[p] {
 		title := strings.Replace(ref.Name, "_", " ", -1)
-		result = append(result, Backref{
+		if _, e := result[ref.Name]; !e {
+			result[ref.Name] = nil
+		}
+
+		result[ref.Name] = append(result[ref.Name], Backref{
 			Name:  ref.Name,
 			Title: title,
 			Line:  strings.TrimLeft(ref.Link.Line, " *"),

main.go

@@ -47,7 +47,7 @@ type Page struct {
 
 	Content string
 
-	Refs []Backref
+	Refs map[string][]Backref
 }
 
 type DiffPage struct {
@@ -85,7 +85,7 @@ type indexPage struct {
 	Title    string
 	Name     string
 	Content  template.HTML
-	Backrefs []Backref
+	Backrefs map[string][]Backref
 }
 
 type editPage struct {
@@ -94,7 +94,7 @@ type editPage struct {
 	Content  string
 	Name     string
 	Editor   template.HTML
-	Backrefs []Backref
+	Backrefs map[string][]Backref
 }
 
 type historyPage struct {

templates/edit.html

@@ -13,10 +13,12 @@
     <div class="backrefs content">
         <h3>Linked references</h3>
         <ul>
-            {{ range $ref := .Backrefs }}
-                <li><a href="/{{ $ref.Name }}">{{ $ref.Title }}</a>
+            {{ range $name, $refs := .Backrefs }}
+                <li><a href="/{{ $name }}">{{ (index $refs 0).Title }}</a>
                     <ul>
-                        <li>{{ $ref.Line }}</li>
+                        {{ range $ref := $refs }}
+                            <li>{{ $ref.Line }}</li>
+                        {{ end }}
                     </ul>
                 </li>
             {{ end }}

templates/view.html

@@ -7,10 +7,12 @@
     <div class="backrefs content">
         <h3>Backrefs</h3>
         <ul>
-        {{ range $ref := .Backrefs }}
-        <li><a href="/{{ $ref.Name }}">{{ $ref.Title }}</a>
+        {{ range $name, $refs := .Backrefs }}
+        <li><a href="/{{ $name }}">{{ $name }}</a>
             <ul>
-                <li>{{ $ref.Line }}</li>
+                {{ range $ref := $refs }}
+                    <li>{{ $ref.Line }}</li>
+                {{ end }}
             </ul>
         </li>
         {{ end }}