func (t *thumbnail) Process(ctx goldsmith.Context, f goldsmith.File) error {
defer ctx.DispatchFile(f)
thumbPath, create := t.thumbName(f.Path())
if !create {
return nil
}
var (
fn goldsmith.File
err error
)
if cached(ctx, f.Path(), thumbPath) {
thumbPathDst := filepath.Join(ctx.DstDir(), thumbPath)
fn, err = goldsmith.NewFileFromAsset(thumbPath, thumbPathDst)
if err != nil {
return err
}
} else {
var err error
fn, err = t.thumbnail(f, thumbPath)
if err != nil {
return err
}
}
ctx.DispatchFile(fn)
return nil
}
func cached(ctx goldsmith.Context, srcPath, dstPath string) bool {
srcPathFull := filepath.Join(ctx.SrcDir(), srcPath)
srcStat, err := os.Stat(srcPathFull)
if err != nil {
return false
}
dstPathFull := filepath.Join(ctx.DstDir(), dstPath)
dstStat, err := os.Stat(dstPathFull)
if err != nil {
return false
}
return dstStat.ModTime().Unix() >= srcStat.ModTime().Unix()
}