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serve.go
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serve.go
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// Copyright 2018 Google Inc. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package main
import (
"log"
"net/http"
"os/exec"
"runtime"
)
// cmdServe is the "claat serve ..." subcommand.
func cmdServe() {
cmdBuild()
http.Handle("/", http.FileServer(http.Dir(".")))
log.Printf("Serving codelabs on %s, opening browser tab now...", *addr)
ch := make(chan error, 1)
go func() {
ch <- http.ListenAndServe(*addr, nil)
}()
openBrowser("http://" + *addr)
fatalf("claat serve: %v", <-ch)
}
// openBrowser tries to open the URL in a browser.
func openBrowser(url string) error {
var args []string
switch runtime.GOOS {
case "darwin":
args = []string{"open"}
case "windows":
args = []string{"cmd", "/c", "start"}
default:
args = []string{"xdg-open"}
}
cmd := exec.Command(args[0], append(args[1:], url)...)
return cmd.Start()
}