/
config.go
241 lines (225 loc) · 6.17 KB
/
config.go
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// blorg is a very minimal and broken static site generator. Don't use this. I initially wrote go-org to use Org mode in hugo
// and non crazy people should keep using hugo. I just like the idea of not having dependencies / following 80/20 rule. And blorg gives me what I need
// for a blog in a fraction of the LOC (hugo is a whooping 80k+ excluding dependencies - this will very likely stay <5k).
package blorg
import (
"fmt"
"html/template"
"log"
"net/http"
"os"
"path"
"path/filepath"
"sort"
"strconv"
"strings"
"time"
_ "embed"
"github.com/niklasfasching/go-org/org"
)
type Config struct {
ConfigFile string
ContentDir string
PublicDir string
Address string
BaseUrl string
Template *template.Template
OrgConfig *org.Configuration
}
var DefaultConfigFile = "blorg.org"
//go:embed testdata/blorg.org
var DefaultConfig string
var TemplateFuncs = map[string]interface{}{
"Slugify": slugify,
}
func ReadConfig(configFile string) (*Config, error) {
baseUrl, address, publicDir, contentDir, workingDir := "/", ":3000", "public", "content", filepath.Dir(configFile)
f, err := os.Open(configFile)
if err != nil {
return nil, err
}
orgConfig := org.New()
document := orgConfig.Parse(f, configFile)
if document.Error != nil {
return nil, document.Error
}
m := document.BufferSettings
if !strings.HasSuffix(m["BASE_URL"], "/") {
m["BASE_URL"] += "/"
}
if v, exists := m["AUTO_LINK"]; exists {
orgConfig.AutoLink = v == "true"
delete(m, "AUTO_LINK")
}
if v, exists := m["ADDRESS"]; exists {
address = v
delete(m, "ADDRESS")
}
if _, exists := m["BASE_URL"]; exists {
baseUrl = m["BASE_URL"]
}
if v, exists := m["PUBLIC"]; exists {
publicDir = v
delete(m, "PUBLIC")
}
if v, exists := m["CONTENT"]; exists {
contentDir = v
delete(m, "CONTENT")
}
if v, exists := m["MAX_EMPHASIS_NEW_LINES"]; exists {
i, err := strconv.Atoi(v)
if err != nil {
return nil, fmt.Errorf("MAX_EMPHASIS_NEW_LINES: %v %w", v, err)
}
orgConfig.MaxEmphasisNewLines = i
delete(m, "MAX_EMPHASIS_NEW_LINES")
}
for k, v := range m {
if k == "OPTIONS" {
orgConfig.DefaultSettings[k] = v + " " + orgConfig.DefaultSettings[k]
} else {
orgConfig.DefaultSettings[k] = v
}
}
config := &Config{
ConfigFile: configFile,
ContentDir: filepath.Join(workingDir, contentDir),
PublicDir: filepath.Join(workingDir, publicDir),
Address: address,
BaseUrl: baseUrl,
Template: template.New("_").Funcs(TemplateFuncs),
OrgConfig: orgConfig,
}
for name, node := range document.NamedNodes {
if block, ok := node.(org.Block); ok {
if block.Parameters[0] != "html" {
continue
}
if _, err := config.Template.New(name).Parse(org.String(block.Children...)); err != nil {
return nil, err
}
}
}
return config, nil
}
func (c *Config) Serve() error {
http.Handle("/", http.HandlerFunc(func(res http.ResponseWriter, req *http.Request) {
if strings.HasSuffix(req.URL.Path, ".html") || strings.HasSuffix(req.URL.Path, "/") {
start := time.Now()
if c, err := ReadConfig(c.ConfigFile); err != nil {
log.Fatal(err)
} else {
if err := c.Render(); err != nil {
log.Fatal(err)
}
}
log.Printf("render took %s", time.Since(start))
}
http.ServeFile(res, req, filepath.Join(c.PublicDir, path.Clean(req.URL.Path)))
}))
log.Printf("listening on: %s", c.Address)
return http.ListenAndServe(c.Address, nil)
}
func (c *Config) Render() error {
if err := os.RemoveAll(c.PublicDir); err != nil {
return err
}
if err := os.MkdirAll(c.PublicDir, os.ModePerm); err != nil {
return err
}
pages, err := c.RenderContent()
if err != nil {
return err
}
return c.RenderLists(pages)
}
func (c *Config) RenderContent() ([]*Page, error) {
pages := []*Page{}
err := filepath.Walk(c.ContentDir, func(path string, info os.FileInfo, err error) error {
if err != nil {
return err
}
relPath, err := filepath.Rel(c.ContentDir, path)
if err != nil {
return err
}
publicPath := filepath.Join(c.PublicDir, relPath)
publicInfo, err := os.Stat(publicPath)
if err != nil && !os.IsNotExist(err) {
return err
}
if info.IsDir() {
return os.MkdirAll(publicPath, info.Mode())
}
if filepath.Ext(path) != ".org" && (os.IsNotExist(err) || info.ModTime().After(publicInfo.ModTime())) {
return os.Link(path, publicPath)
}
p, err := NewPage(c, path, info)
if err != nil {
return err
}
pages = append(pages, p)
p.PermaLink = c.BaseUrl + relPath[:len(relPath)-len(".org")] + ".html"
return p.Render(publicPath[:len(publicPath)-len(".org")] + ".html")
})
sort.Slice(pages, func(i, j int) bool { return pages[i].Date.After(pages[j].Date) })
return pages, err
}
func (c *Config) RenderLists(pages []*Page) error {
ms := toMap(c.OrgConfig.DefaultSettings, nil)
ms["Pages"] = pages
lists := map[string]map[string][]interface{}{"": {"": nil}}
for _, p := range pages {
if p.BufferSettings["DRAFT"] != "" {
continue
}
mp := toMap(p.BufferSettings, p)
if p.BufferSettings["DATE"] != "" {
lists[""][""] = append(lists[""][""], mp)
}
for k, v := range p.BufferSettings {
if strings.HasSuffix(k, "[]") {
list := strings.ToLower(k[:len(k)-2])
if lists[list] == nil {
lists[list] = map[string][]interface{}{}
}
for _, sublist := range strings.Fields(v) {
lists[list][sublist] = append(lists[list][strings.ToLower(sublist)], mp)
}
}
}
}
for list, sublists := range lists {
for sublist, pages := range sublists {
ms["Title"] = strings.Title(sublist)
ms["Pages"] = pages
if err := c.RenderList(list, sublist, ms); err != nil {
return err
}
}
}
return nil
}
func (c *Config) RenderList(list, sublist string, m map[string]interface{}) error {
t := c.Template.Lookup(list)
if list == "" {
m["Title"] = c.OrgConfig.DefaultSettings["TITLE"]
t = c.Template.Lookup("index")
}
if t == nil {
t = c.Template.Lookup("list")
}
if t == nil {
return fmt.Errorf("cannot render list: neither template %s nor list", list)
}
path := filepath.Join(c.PublicDir, slugify(list), slugify(sublist))
if err := os.MkdirAll(path, os.ModePerm); err != nil {
return err
}
f, err := os.Create(filepath.Join(path, "index.html"))
if err != nil {
return err
}
defer f.Close()
return t.Execute(f, m)
}