some updates and fixes

directory/editor.go

@@ -42,7 +42,7 @@ func (i *Info) GetEditor() (*Editor, error) {
 	// Handle the content depending on the file extension
 	switch editor.Mode {
 	case "markdown", "asciidoc", "rst":
-		if editor.hasFrontMatterRune(i.Raw) {
+		if HasFrontMatterRune(i.Raw) {
 			// Starts a new buffer and parses the file using Hugo's functions
 			buffer := bytes.NewBuffer(i.Raw)
 			page, err = parser.ReadFrom(buffer)
@@ -64,10 +64,10 @@ func (i *Info) GetEditor() (*Editor, error) {
 		editor.Class = "frontmatter-only"
 
 		// Checks if the file already has the frontmatter rune and parses it
-		if editor.hasFrontMatterRune(i.Raw) {
+		if HasFrontMatterRune(i.Raw) {
 			editor.FrontMatter, _, err = frontmatter.Pretty(i.Raw)
 		} else {
-			editor.FrontMatter, _, err = frontmatter.Pretty(editor.appendFrontMatterRune(i.Raw, editor.Mode))
+			editor.FrontMatter, _, err = frontmatter.Pretty(AppendFrontMatterRune(i.Raw, editor.Mode))
 		}
 
 		// Check if there were any errors
@@ -82,13 +82,15 @@ func (i *Info) GetEditor() (*Editor, error) {
 	return editor, nil
 }
 
-func (e Editor) hasFrontMatterRune(file []byte) bool {
+// HasFrontMatterRune checks if the file has the frontmatter rune
+func HasFrontMatterRune(file []byte) bool {
 	return strings.HasPrefix(string(file), "---") ||
 		strings.HasPrefix(string(file), "+++") ||
 		strings.HasPrefix(string(file), "{")
 }
 
-func (e Editor) appendFrontMatterRune(frontmatter []byte, language string) []byte {
+// AppendFrontMatterRune appends the frontmatter rune to a file
+func AppendFrontMatterRune(frontmatter []byte, language string) []byte {
 	switch language {
 	case "yaml":
 		return []byte("---\n" + string(frontmatter) + "\n---")

directory/update.go

@@ -64,7 +64,22 @@ func (i *Info) Update(w http.ResponseWriter, r *http.Request, c *config.Config)
 
 func parseFrontMatterOnlyFile(data interface{}, filename string) ([]byte, int, error) {
 	frontmatter := strings.TrimPrefix(filepath.Ext(filename), ".")
-	return parseFrontMatter(data, frontmatter)
+	f, code, err := parseFrontMatter(data, frontmatter)
+	fString := string(f)
+
+	// If it's toml or yaml, strip frontmatter identifier
+	if frontmatter == "toml" {
+		fString = strings.TrimSuffix(fString, "+++\n")
+		fString = strings.TrimPrefix(fString, "+++\n")
+	}
+
+	if frontmatter == "yaml" {
+		fString = strings.TrimSuffix(fString, "---\n")
+		fString = strings.TrimPrefix(fString, "---\n")
+	}
+
+	f = []byte(fString)
+	return f, code, err
 }
 
 func parseFrontMatter(data interface{}, frontmatter string) ([]byte, int, error) {
@@ -82,20 +97,6 @@ func parseFrontMatter(data interface{}, frontmatter string) ([]byte, int, error)
 	}
 
 	f, err := parser.InterfaceToFrontMatter(data, mark)
-	fString := string(f)
-
-	// If it's toml or yaml, strip frontmatter identifier
-	if frontmatter == "toml" {
-		fString = strings.TrimSuffix(fString, "+++\n")
-		fString = strings.TrimPrefix(fString, "+++\n")
-	}
-
-	if frontmatter == "yaml" {
-		fString = strings.TrimSuffix(fString, "---\n")
-		fString = strings.TrimPrefix(fString, "---\n")
-	}
-
-	f = []byte(fString)
 
 	if err != nil {
 		return []byte{}, http.StatusInternalServerError, err

frontmatter/frontmatter.go

@@ -26,29 +26,11 @@ var mainTitle = ""
 
 // Pretty creates a new FrontMatter object
 func Pretty(content []byte) (*Content, string, error) {
-	mark := rune(content[0])
+	data, err := Unmarshal(content)
-	var data interface{}
 
-	switch mark {
+	if err != nil {
-	case '-':
-		// If it's YAML
-		if err := yaml.Unmarshal(content, &data); err != nil {
 		return &Content{}, "", err
 	}
-	case '+':
-		// If it's TOML
-		content = bytes.Replace(content, []byte("+"), []byte(""), -1)
-		if _, err := toml.Decode(string(content), &data); err != nil {
-			return &Content{}, "", err
-		}
-	case '{', '[':
-		// If it's JSON
-		if err := json.Unmarshal(content, &data); err != nil {
-			return &Content{}, "", err
-		}
-	default:
-		return &Content{}, "", errors.New("Invalid frontmatter type.")
-	}
 
 	kind := reflect.ValueOf(data).Kind()
 
@@ -65,6 +47,35 @@ func Pretty(content []byte) (*Content, string, error) {
 	return rawToPretty(data, object), mainTitle, nil
 }
 
+// Unmarshal returns the data of the frontmatter
+func Unmarshal(content []byte) (interface{}, error) {
+	mark := rune(content[0])
+	var data interface{}
+
+	switch mark {
+	case '-':
+		// If it's YAML
+		if err := yaml.Unmarshal(content, &data); err != nil {
+			return nil, err
+		}
+	case '+':
+		// If it's TOML
+		content = bytes.Replace(content, []byte("+"), []byte(""), -1)
+		if _, err := toml.Decode(string(content), &data); err != nil {
+			return nil, err
+		}
+	case '{', '[':
+		// If it's JSON
+		if err := json.Unmarshal(content, &data); err != nil {
+			return nil, err
+		}
+	default:
+		return nil, errors.New("Invalid frontmatter type.")
+	}
+
+	return data, nil
+}
+
 // Content is the block content
 type Content struct {
 	Other   interface{}