package convert import ( "bytes" "fmt" "html/template" "strings" "gopkg.in/yaml.v3" ) type PageData struct { Title string Icon string Stylesheet string Header template.HTML Content template.HTML NextPost template.HTML PrevPost template.HTML Footer template.HTML } func processWithYaml(f []byte) (Metadata, []byte, error) { // Check if the file has valid metadata if !bytes.HasPrefix(f, []byte("---\n")) { // No valid yaml, so return the entire content return nil, f, nil } // Separate YAML from rest of document split := strings.SplitN(string(f), "---\n", 3) if len(split) < 3 { return nil, nil, fmt.Errorf("Invalid frontmatter format.") } var metadata Metadata // Parse YAML if err := yaml.Unmarshal([]byte(split[1]), &metadata); err != nil { return nil, nil, err } return metadata, []byte(split[2]), nil } func ConvertFile(in string, out string) error { mdPre, err := ReadFile(in) if err != nil { return err } metadata, md, err := processWithYaml(mdPre) if err != nil { return err } title, ok := metadata["title"].(string) if !ok { fmt.Println("No title in page.") } else { fmt.Println("Title found: ", title) } html, err := MdToHTML(md) if err != nil { return err } err = WriteFile(html, out) return err }