90 lines
2.0 KiB
Go
90 lines
2.0 KiB
Go
package server
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import (
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"bytes"
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"compress/gzip"
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"io/ioutil"
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"net/http"
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"strconv"
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"strings"
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"time"
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)
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var files = []File{
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File{"bundle.js", "text/javascript"},
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File{"bundle.css", "text/css"},
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File{"font/fontello.woff", "application/font-woff"},
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File{"font/fontello.ttf", "application/x-font-ttf"},
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File{"font/fontello.eot", "application/vnd.ms-fontobject"},
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File{"font/fontello.svg", "image/svg+xml"},
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}
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type File struct {
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Path string
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ContentType string
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}
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func serveFiles(w http.ResponseWriter, r *http.Request) {
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if r.URL.Path == "/" {
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serveFile(w, r, "index.html.gz", "text/html")
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return
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}
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for _, file := range files {
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if strings.HasSuffix(r.URL.Path, file.Path) {
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serveFile(w, r, file.Path+".gz", file.ContentType)
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return
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}
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}
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serveFile(w, r, "index.html.gz", "text/html")
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}
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func serveFile(w http.ResponseWriter, r *http.Request, path, contentType string) {
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info, err := AssetInfo(path)
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if err != nil {
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http.Error(w, "", http.StatusInternalServerError)
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return
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}
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if !modifiedSince(w, r, info.ModTime()) {
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return
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}
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data, err := Asset(path)
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if err != nil {
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http.Error(w, "", http.StatusInternalServerError)
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return
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}
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w.Header().Set("Content-Type", contentType)
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if strings.Contains(r.Header.Get("Accept-Encoding"), "gzip") {
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w.Header().Set("Content-Encoding", "gzip")
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w.Header().Set("Content-Length", strconv.Itoa(len(data)))
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w.Write(data)
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} else {
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gzr, err := gzip.NewReader(bytes.NewReader(data))
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buf, err := ioutil.ReadAll(gzr)
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if err != nil {
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http.Error(w, "", http.StatusInternalServerError)
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return
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}
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w.Header().Set("Content-Length", strconv.Itoa(len(buf)))
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w.Write(buf)
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}
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}
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func modifiedSince(w http.ResponseWriter, r *http.Request, modtime time.Time) bool {
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t, err := time.Parse(http.TimeFormat, r.Header.Get("If-Modified-Since"))
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if err == nil && modtime.Before(t.Add(1*time.Second)) {
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w.WriteHeader(http.StatusNotModified)
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return false
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}
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w.Header().Set("Last-Modified", modtime.UTC().Format(http.TimeFormat))
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return true
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}
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