func MemFromDir(dir string) VFS {
fs, err := vfs.FS(dir)
if err != nil {
panic(err)
}
mem := vfs.Memory()
if err := vfs.Clone(mem, fs); err != nil {
panic(err)
}
return mem
}
func ArticleHandler(ctx *app.Context) {
slug := ctx.IndexValue(0)
var art *article.Article
articles := getArticles(ctx)
for _, v := range articles {
if v.Slug() == slug {
art = v
break
}
}
if art == nil {
for _, v := range articles {
for _, s := range v.AllSlugs() {
if s == slug {
ctx.MustRedirectReverse(true, ctx.HandlerName(), s)
return
}
}
}
ctx.NotFound("article not found")
return
}
fs := vfs.Memory()
filename := path.Base(art.Filename)
if filename == "" {
filename = "article.html"
}
if err := vfs.WriteFile(fs, filename, art.Text, 0644); err != nil {
panic(err)
}
log.Debugf("loading article %s", articleId(art))
tmpl, err := app.LoadTemplate(ctx.App(), fs, nil, filename)
if err != nil {
panic(err)
}
var buf bytes.Buffer
if err := tmpl.ExecuteTo(&buf, ctx, nil); err != nil {
panic(err)
}
body := buf.String()
data := map[string]interface{}{
"Article": art,
"Title": art.Title(),
"Body": template.HTML(body),
}
ctx.MustExecute("article.html", data)
}
// Bake writes the data for a VFS generated from dir to the given
// io.Writer. The extensions argument can be used to limit the
// files included in the VFS by their extension. If empty, all
// files are included.
func Bake(w io.Writer, dir string, extensions []string) error {
fs, err := vfs.FS(dir)
if err != nil {
return err
}
if len(extensions) > 0 {
// Clone the fs and remove files not matching the extension
exts := make(map[string]bool)
for _, v := range extensions {
if v == "" {
continue
}
if v[0] != '.' {
v = "." + v
}
exts[strings.ToLower(v)] = true
}
mem := vfs.Memory()
if err := vfs.Clone(mem, fs); err != nil {
return err
}
err := vfs.Walk(mem, "/", func(fs vfs.VFS, p string, info os.FileInfo, err error) error {
if err != nil || info.IsDir() {
return err
}
if !exts[strings.ToLower(path.Ext(p))] {
if err := fs.Remove(p); err != nil {
return err
}
}
return nil
})
if err != nil {
return err
}
fs = mem
}
vfs.Walk(fs, "/", func(_ vfs.VFS, p string, info os.FileInfo, err error) error {
if !info.IsDir() {
log.Debugf("baking %s", p)
}
return nil
})
return vfs.WriteTarGzip(w, fs)
}
// NewMemoryCache returns an ephemeral cache in memory
func NewMemoryCache() Cache {
return NewVFSCache(vfs.Memory())
}