drop-in file server for go-bindata

dataserver.go

package main

import (
	"bytes"
	"net/http"
	"os"
)

type file struct {
	name string
	p    []byte
	fi   os.FileInfo
}

type DataServer struct {
	files map[string]file
}

func NewDataServer(names ...string) (*DataServer, error) {
	ds := &DataServer{
		files: make(map[string]file, len(names)),
	}
	for _, name := range names {
		if _, ok := ds.files[name]; ok {
			continue // ignore duplicates
		}
		p, err := Asset(name)
		if err != nil {
			return nil, err
		}
		fi, err := AssetInfo(name)
		if err != nil {
			return nil, err
		}
		ds.files[name] = file{
			name: name,
			p:    p,
			fi:   fi,
		}
	}
	return ds, nil
}

func (ds *DataServer) Serve(w http.ResponseWriter, r *http.Request, name string) {
	f, ok := ds.files[name]
	if !ok {
		http.NotFound(w, r)
		return
	}
	http.ServeContent(w, r, f.name, f.fi.ModTime(), bytes.NewReader(f.p))
}