github.com/clem109/go-ethereum@v1.8.3-0.20180316121352-fe6cf00f480a/cmd/internal/browser/browser.go (about)

     1  // Copyright 2016 The Go Authors. All rights reserved.
     2  // Use of this source code is governed by a BSD-style
     3  // license that can be found in the LICENSE file.
     4  
     5  // Package browser provides utilities for interacting with users' browsers.
     6  package browser
     7  
     8  import (
     9  	"os"
    10  	"os/exec"
    11  	"runtime"
    12  )
    13  
    14  // Commands returns a list of possible commands to use to open a url.
    15  func Commands() [][]string {
    16  	var cmds [][]string
    17  	if exe := os.Getenv("BROWSER"); exe != "" {
    18  		cmds = append(cmds, []string{exe})
    19  	}
    20  	switch runtime.GOOS {
    21  	case "darwin":
    22  		cmds = append(cmds, []string{"/usr/bin/open"})
    23  	case "windows":
    24  		cmds = append(cmds, []string{"cmd", "/c", "start"})
    25  	default:
    26  		cmds = append(cmds, []string{"xdg-open"})
    27  	}
    28  	cmds = append(cmds,
    29  		[]string{"chrome"},
    30  		[]string{"google-chrome"},
    31  		[]string{"chromium"},
    32  		[]string{"firefox"},
    33  	)
    34  	return cmds
    35  }
    36  
    37  // Open tries to open url in a browser and reports whether it succeeded.
    38  func Open(url string) bool {
    39  	for _, args := range Commands() {
    40  		cmd := exec.Command(args[0], append(args[1:], url)...)
    41  		if cmd.Start() == nil {
    42  			return true
    43  		}
    44  	}
    45  	return false
    46  }