hugo-micropub/post.go

127 lines
3.1 KiB
Go

package main
import (
"bytes"
"errors"
"gopkg.in/yaml.v2"
"strings"
)
type Frontmatter struct {
Title string `yaml:"title,omitempty"`
Date string `yaml:"date,omitempty"`
Lastmod string `yaml:"lastmod,omitempty"`
Tags []string `yaml:"tags,omitempty"`
ExternalURL string `yaml:"externalURL,omitempty"`
Indieweb Indieweb `yaml:"indieweb,omitempty"`
}
type Indieweb struct {
Reply Reply `yaml:"reply,omitempty"`
Like Like `yaml:"like,omitempty"`
}
type Reply struct {
Link string `yaml:"link,omitempty"`
Title string `yaml:"title,omitempty"`
}
type Like struct {
Link string `yaml:"link,omitempty"`
Title string `yaml:"title,omitempty"`
}
func writeFrontMatter(entry *Entry) (frontmatter string, err error) {
var buff bytes.Buffer
writeFrontmatter := &Frontmatter{
Title: entry.title,
Date: entry.date,
Lastmod: entry.lastmod,
Tags: entry.tags,
ExternalURL: entry.link,
Indieweb: Indieweb{
Reply: Reply{
Link: entry.replyLink,
Title: entry.replyTitle,
},
Like: Like{
Link: entry.likeLink,
Title: entry.likeTitle,
},
},
}
yamlBytes, err := yaml.Marshal(&writeFrontmatter)
if err != nil {
err = errors.New("failed marshaling frontmatter")
return
}
buff.WriteString("---\n")
buff.Write(yamlBytes)
buff.WriteString("---\n")
frontmatter = buff.String()
return
}
func WriteHugoPost(entry *Entry) (string, error) {
var buff bytes.Buffer
frontmatter, err := writeFrontMatter(entry)
if err != nil {
return "", err
}
buff.WriteString(frontmatter)
if len(entry.content) > 0 {
buff.WriteString(entry.content)
}
return buff.String(), nil
}
func readFrontMatter(frontmatter string, entry *Entry) (err error) {
parsedFrontmatter := &Frontmatter{}
err = yaml.Unmarshal([]byte(frontmatter), &parsedFrontmatter)
if err != nil {
err = errors.New("failed parsing frontmatter")
}
if len(parsedFrontmatter.Title) > 0 {
entry.title = parsedFrontmatter.Title
}
if len(parsedFrontmatter.Date) > 0 {
entry.date = parsedFrontmatter.Date
}
if len(parsedFrontmatter.Lastmod) > 0 {
entry.lastmod = parsedFrontmatter.Lastmod
}
if len(parsedFrontmatter.Tags) > 0 {
entry.tags = parsedFrontmatter.Tags
}
if len(parsedFrontmatter.ExternalURL) > 0 {
entry.link = parsedFrontmatter.ExternalURL
}
if len(parsedFrontmatter.Indieweb.Reply.Link) > 0 {
entry.replyLink = parsedFrontmatter.Indieweb.Reply.Link
}
if len(parsedFrontmatter.Indieweb.Reply.Title) > 0 {
entry.replyTitle = parsedFrontmatter.Indieweb.Reply.Title
}
if len(parsedFrontmatter.Indieweb.Like.Link) > 0 {
entry.replyLink = parsedFrontmatter.Indieweb.Like.Link
}
if len(parsedFrontmatter.Indieweb.Like.Title) > 0 {
entry.replyTitle = parsedFrontmatter.Indieweb.Like.Title
}
return
}
func ReadHugoPost(fileContent string) (entry *Entry, err error) {
parts := strings.Split(fileContent, "---\n")
if len(parts) != 3 {
err = errors.New("empty frontmatter or content")
return
}
entry = new(Entry)
err = readFrontMatter(parts[1], entry)
if err != nil {
return
}
entry.content = strings.TrimSuffix(parts[2], "\n")
return
}