gopls/cmd/getgo/system.go

1	// Copyright 2017 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	//go:build !plan9
6	// +build !plan9
7
8	package main
9
10	import (
11	"bytes"
12	"context"
13	exec "golang.org/x/sys/execabs"
14	"runtime"
15	"strings"
16	)
17
18	// arch contains either amd64 or 386.
19	var arch = func() string {
20	cmd := exec.Command("uname", "-m") // "x86_64"
21	if runtime.GOOS == "windows" {
22	cmd = exec.Command("powershell", "-command", "(Get-WmiObject -Class Win32_ComputerSystem).SystemType") // "x64-based PC"
23	}
24
25	out, err := cmd.Output()
26	if err != nil {
27	// a sensible default?
28	return "amd64"
29	}
30	if bytes.Contains(out, []byte("64")) {
31	return "amd64"
32	}
33	return "386"
34	}()
35
36	func findGo(ctx context.Context, cmd string) (string, error) {
37	out, err := exec.CommandContext(ctx, cmd, "go").CombinedOutput()
38	return strings.TrimSpace(string(out)), err
39	}
40

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