mirror of
https://github.com/hajimehoshi/ebiten.git
synced 2024-12-25 19:28:57 +01:00
144 lines
3.1 KiB
Go
144 lines
3.1 KiB
Go
// Copyright 2015 Hajime Hoshi
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package main
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import (
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"flag"
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"fmt"
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"io"
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"io/ioutil"
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"log"
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"net/http"
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"net/url"
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"os"
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"os/exec"
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"path/filepath"
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"runtime"
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"strconv"
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"time"
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)
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var port = flag.Int("port", 8000, "port number")
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func init() {
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flag.Parse()
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}
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var rootPath = ""
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func init() {
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_, path, _, _ := runtime.Caller(0)
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rootPath = filepath.Join(filepath.Dir(path), "..")
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}
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var jsDir = ""
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func init() {
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var err error
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jsDir, err = ioutil.TempDir("", "ebiten")
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if err != nil {
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panic(err)
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}
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}
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func createJSIfNeeded(name string) (string, error) {
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out := filepath.Join(jsDir, name, "main.js")
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stat, err := os.Stat(out)
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if err != nil && !os.IsNotExist(err) {
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return "", err
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}
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if (err != nil && os.IsNotExist(err)) || time.Now().Sub(stat.ModTime()) > 10*time.Second {
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target := "github.com/hajimehoshi/ebiten/example/" + name
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if err := exec.Command("gopherjs", "build", "-o", out, target).Run(); err != nil {
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return "", err
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}
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}
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return out, nil
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}
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func serveFile(w http.ResponseWriter, path, mime string) error {
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f, err := os.Open(path)
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if err != nil {
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return err
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}
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defer f.Close()
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w.Header().Set("Content-Type", mime)
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if _, err := io.Copy(w, f); err != nil {
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return err
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}
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return nil
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}
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func appName(r *http.Request) (string, error) {
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u, err := url.Parse(r.Referer())
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if err != nil {
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return "", err
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}
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q := u.RawQuery
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if q == "" {
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q = "blocks"
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}
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return q, nil
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}
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func serveMainJS(w http.ResponseWriter, r *http.Request) {
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name, err := appName(r)
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if err != nil {
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w.WriteHeader(http.StatusBadRequest)
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fmt.Fprint(w, err.Error())
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return
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}
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out, err := createJSIfNeeded(name)
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if err != nil {
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w.WriteHeader(http.StatusInternalServerError)
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fmt.Fprint(w, err.Error())
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return
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}
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if err := serveFile(w, out, "text/javascript"); err != nil {
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w.WriteHeader(http.StatusInternalServerError)
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fmt.Fprint(w, err.Error())
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return
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}
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}
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func serveMainJSMap(w http.ResponseWriter, r *http.Request) {
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name, err := appName(r)
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if err != nil {
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w.WriteHeader(http.StatusBadRequest)
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fmt.Fprint(w, err.Error())
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return
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}
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out, err := createJSIfNeeded(name)
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if err != nil {
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w.WriteHeader(http.StatusInternalServerError)
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fmt.Fprint(w, err.Error())
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return
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}
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out += ".map"
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if err := serveFile(w, out, "application/octet-stream"); err != nil {
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w.WriteHeader(http.StatusInternalServerError)
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fmt.Fprint(w, err.Error())
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return
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}
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}
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func main() {
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http.HandleFunc("/main.js", serveMainJS)
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http.HandleFunc("/main.js.map", serveMainJSMap)
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http.Handle("/", http.FileServer(http.Dir(rootPath)))
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log.Fatal(http.ListenAndServe(":"+strconv.Itoa(*port), nil))
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}
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