func (app *App) importAssets(included *includedApp) error {
im := included.app.assetsManager
if !app.shouldImportAssets() {
im.SetPrefix(included.prefix + im.Prefix())
return nil
}
m := app.assetsManager
prefix := strings.ToLower(included.name)
renames := make(map[string]string)
err := vfs.Walk(im.VFS(), "/", func(fs vfs.VFS, p string, info os.FileInfo, err error) error {
if err != nil || info.IsDir() {
return err
}
if p != "" && p[0] == '/' {
p = p[1:]
}
log.Debugf("will import asset %v from app %s", p, included.name)
src, err := im.Load(p)
if err != nil {
return err
}
defer src.Close()
seeker, err := assets.Seeker(src)
if err != nil {
return err
}
sum := hashutil.Fnv32a(seeker)
nonExt := p[:len(p)-len(path.Ext(p))]
dest := path.Join(prefix, nonExt+".gen."+sum+path.Ext(p))
renames[p] = dest
log.Debugf("importing asset %q as %q", p, dest)
if m.Has(dest) {
return nil
}
f, err := m.Create(dest, true)
if err != nil {
return err
}
defer f.Close()
if _, err := seeker.Seek(0, os.SEEK_SET); err != nil {
return err
}
if _, err := io.Copy(f, seeker); err != nil {
return err
}
return nil
})
if err != nil {
return err
}
included.renames = renames
return nil
}
func Compile(m *Manager, name string, typ Type, opts Options) (string, error) {
ext := path.Ext(name)
compiler := compilers[typ][strings.ToLower(ext)]
if compiler == nil {
return name, nil
}
f, err := m.Load(name)
if err != nil {
return "", err
}
defer f.Close()
seeker, err := Seeker(f)
fnv := hashutil.Fnv32a(seeker)
out := fmt.Sprintf("%s.gen.%s.%s", name, fnv, typ.Ext())
if o, _ := m.Load(out); o != nil {
o.Close()
log.Debugf("%s already compiled to %s", name, out)
return out, nil
}
seeker.Seek(0, 0)
var buf bytes.Buffer
log.Debugf("compiling %s to %s", name, out)
if err := compiler.Compile(&buf, seeker, opts); err != nil {
return "", err
}
w, err := m.Create(out, true)
if err != nil {
return "", err
}
if _, err := io.Copy(w, bytes.NewReader(buf.Bytes())); err != nil {
w.Close()
return "", err
}
if err := w.Close(); err != nil {
return "", err
}
return out, nil
}
