Example #1
0
// @router /test/file/download [get]
func (c *TestController) Download() {
	filename := c.GetString("name")
	if filename == "" {
		http.Error(c.Ctx.ResponseWriter, "Not Found", 404)
		return
	}
	filename = fileDir + filename
	_, err := os.Stat(filename)
	if os.IsNotExist(err) {
		http.Error(c.Ctx.ResponseWriter, "Not Found", 404)
		return
	}

	ctype := mime.TypeByExtension(filepath.Ext(filename))
	if ctype == "" {
		ctype = "application/oct-stream"
	}
	en := context.ParseEncoding(c.Ctx.Request)
	if en != "" {
		c.Ctx.ResponseWriter.Header().Set("Content-Encoding", en)
	}
	c.Ctx.ResponseWriter.Header().Set("Content-Type", ctype)

	f, err := os.Open(filename)
	context.WriteFile(en, c.Ctx.ResponseWriter, f)
}
Example #2
0
func openFile(filePath string, fi os.FileInfo, acceptEncoding string) (bool, string, *serveContentHolder, error) {
	mapKey := acceptEncoding + ":" + filePath
	mapLock.RLock()
	mapFile, _ := staticFileMap[mapKey]
	mapLock.RUnlock()
	if isOk(mapFile, fi) {
		return mapFile.encoding != "", mapFile.encoding, mapFile, nil
	}
	mapLock.Lock()
	defer mapLock.Unlock()
	if mapFile, _ = staticFileMap[mapKey]; !isOk(mapFile, fi) {
		file, err := os.Open(filePath)
		if err != nil {
			return false, "", nil, err
		}
		defer file.Close()
		var bufferWriter bytes.Buffer
		_, n, err := context.WriteFile(acceptEncoding, &bufferWriter, file)
		if err != nil {
			return false, "", nil, err
		}
		mapFile = &serveContentHolder{Reader: bytes.NewReader(bufferWriter.Bytes()), modTime: fi.ModTime(), size: int64(bufferWriter.Len()), encoding: n}
		staticFileMap[mapKey] = mapFile
	}

	return mapFile.encoding != "", mapFile.encoding, mapFile, nil
}