func readFile(f http.File) (chan *FramebufferUpdate, error) {
gzipReader, err := gzip.NewReader(f)
if err != nil {
return nil, err
}
bufioReader := bufio.NewReader(gzipReader)
reader := NewRecordingReader(bufioReader)
output := make(chan *FramebufferUpdate)
go func() {
defer f.Close()
defer close(output)
var err error
for err == nil {
err = readUpdate(reader, output)
}
if err != nil && err != io.EOF {
log.Errorln("error decoding recording:", err)
}
}()
return output, nil
}
// Server returns a handler that serves the files as the response content.
// The files being served are determined using the current URL path and the specified path map.
// For example, if the path map is {"/css": "/www/css", "/js": "/www/js"} and the current URL path
// "/css/main.css", the file "<working dir>/www/css/main.css" will be served.
// If a URL path matches multiple prefixes in the path map, the most specific prefix will take precedence.
// For example, if the path map contains both "/css" and "/css/img", and the URL path is "/css/img/logo.gif",
// then the path mapped by "/css/img" will be used.
//
// import (
// "log"
// "github.com/go-ozzo/ozzo-routing"
// "github.com/go-ozzo/ozzo-routing/file"
// )
//
// r := routing.New()
// r.Get("/*", file.Server(file.PathMap{
// "/css": "/ui/dist/css",
// "/js": "/ui/dist/js",
// }))
func Server(pathMap PathMap, opts ...ServerOptions) routing.Handler {
var options ServerOptions
if len(opts) > 0 {
options = opts[0]
}
if !filepath.IsAbs(options.RootPath) {
options.RootPath = filepath.Join(RootPath, options.RootPath)
}
from, to := parsePathMap(pathMap)
// security measure: limit the files within options.RootPath
dir := http.Dir(options.RootPath)
return func(c *routing.Context) error {
if c.Request.Method != "GET" && c.Request.Method != "HEAD" {
return routing.NewHTTPError(http.StatusMethodNotAllowed)
}
path, found := matchPath(c.Request.URL.Path, from, to)
if !found || options.Allow != nil && !options.Allow(c, path) {
return routing.NewHTTPError(http.StatusNotFound)
}
var (
file http.File
fstat os.FileInfo
err error
)
if file, err = dir.Open(path); err != nil {
if options.CatchAllFile != "" {
return serveFile(c, dir, options.CatchAllFile)
}
return routing.NewHTTPError(http.StatusNotFound, err.Error())
}
defer file.Close()
if fstat, err = file.Stat(); err != nil {
return routing.NewHTTPError(http.StatusNotFound, err.Error())
}
if fstat.IsDir() {
if options.IndexFile == "" {
return routing.NewHTTPError(http.StatusNotFound)
}
return serveFile(c, dir, filepath.Join(path, options.IndexFile))
}
http.ServeContent(c.Response, c.Request, path, fstat.ModTime(), file)
return nil
}
}
func (s *Server) serveGzippedFile(w http.ResponseWriter, r *http.Request, filename string, cache bool) {
dir := http.Dir(s.staticPath)
var err error
var f http.File
gzipped := false
if strings.Contains(r.Header.Get("Accept-Encoding"), "gzip") {
f, err = dir.Open(filename + ".gz")
if err != nil {
f = nil
} else {
gzipped = true
}
}
if f == nil {
f, err = dir.Open(filename)
if err != nil {
http.NotFound(w, r)
return
}
}
defer f.Close()
d, err := f.Stat()
if err != nil {
http.NotFound(w, r)
return
}
name := d.Name()
if gzipped {
name = strings.TrimSuffix(name, ".gz")
w = &gzipResponseWriter{
ResponseWriter: w,
cache: cache,
}
}
http.ServeContent(w, r, name, d.ModTime(), f)
}
// Static returns a handler that serves the files under the specified folder as response content.
// For example, if root is "static" and the handler is handling the URL path "/app/index.html",
// then the content of the file "<working dir>/static/app/index.html" may be served as the response.
func Static(root string, opts ...StaticOptions) Handler {
if !filepath.IsAbs(root) {
root = filepath.Join(RootPath, root)
}
options := StaticOptions{}
if len(opts) > 0 {
options = opts[0]
}
if options.IndexFile == "" {
options.IndexFile = "index.html"
}
// limit the files to be served within the specified folder
dir := http.Dir(root)
return func(c *Context) {
if c.Request.Method != "GET" && c.Request.Method != "HEAD" {
c.Next()
return
}
path := c.Request.URL.Path
if options.Prefix != "" {
if !strings.HasPrefix(path, options.Prefix) {
c.Next()
return
}
path = path[len(options.Prefix):]
if path != "" && path[0] != '/' {
c.Next()
return
}
}
if options.Allow != nil && !options.Allow(c, path) {
return
}
var (
file http.File
fstat os.FileInfo
err error
)
if file, err = dir.Open(path); err != nil {
c.Next()
return
}
defer file.Close()
if fstat, err = file.Stat(); err != nil {
c.Next()
return
}
// if it's a directory, try the index file
if fstat.IsDir() {
path = filepath.Join(path, options.IndexFile)
if file, err = dir.Open(path); err != nil {
c.Next()
return
}
defer file.Close()
if fstat, err = file.Stat(); err != nil || fstat.IsDir() {
c.Next()
return
}
}
http.ServeContent(c.Response, c.Request, path, fstat.ModTime(), file)
}
}