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Parsing a Hugo markdown file
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| package main | |
| import ( | |
| "bytes" | |
| "fmt" | |
| "io/ioutil" | |
| "os" | |
| "regexp" | |
| "gopkg.in/yaml.v2" | |
| ) | |
| // FrontMatter struct to hold parsed front matter | |
| type FrontMatter struct { | |
| Title string `yaml:"title"` | |
| Description string `yaml:"description"` | |
| Date string `yaml:"date"` | |
| } | |
| // MarkdownFile struct to hold front matter and body content | |
| type MarkdownFile struct { | |
| FrontMatter FrontMatter | |
| Body []byte | |
| } | |
| // Function to parse the markdown file | |
| func parseMarkdownFile(filename string) (*MarkdownFile, error) { | |
| // Read the entire markdown file | |
| content, err := ioutil.ReadFile(filename) | |
| if err != nil { | |
| return nil, err | |
| } | |
| // Regular expression to find the front matter | |
| re := regexp.MustCompile(`(?s)^---\n(.*?)\n---\n(.*)$`) | |
| matches := re.FindStringSubmatch(string(content)) | |
| if len(matches) != 3 { | |
| return nil, fmt.Errorf("front matter not found") | |
| } | |
| // Parse front matter | |
| var frontMatter FrontMatter | |
| err = yaml.Unmarshal([]byte(matches[1]), &frontMatter) | |
| if err != nil { | |
| return nil, err | |
| } | |
| // Body content as a byte array | |
| body := []byte(matches[2]) | |
| return &MarkdownFile{ | |
| FrontMatter: frontMatter, | |
| Body: body, | |
| }, nil | |
| } | |
| func main() { | |
| if len(os.Args) < 2 { | |
| fmt.Println("Usage: go run main.go <markdown-file>") | |
| return | |
| } | |
| filename := os.Args[1] | |
| mdFile, err := parseMarkdownFile(filename) | |
| if err != nil { | |
| fmt.Printf("Error parsing markdown file: %v\n", err) | |
| return | |
| } | |
| // Output the parsed front matter and body | |
| fmt.Printf("Title: %s\n", mdFile.FrontMatter.Title) | |
| fmt.Printf("Description: %s\n", mdFile.FrontMatter.Description) | |
| fmt.Printf("Date: %s\n", mdFile.FrontMatter.Date) | |
| fmt.Printf("Body:\n%s\n", string(mdFile.Body)) | |
| } |
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