+++ /dev/null
-// Copyright 2020 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-package gocommand
-
-import (
- "context"
- "fmt"
- "strings"
-)
-
-// GoVersion checks the go version by running "go list" with modules off.
-// It returns the X in Go 1.X.
-func GoVersion(ctx context.Context, inv Invocation, r *Runner) (int, error) {
- inv.Verb = "list"
- inv.Args = []string{"-e", "-f", `{{context.ReleaseTags}}`}
- inv.Env = append(append([]string{}, inv.Env...), "GO111MODULE=off")
- // Unset any unneeded flags.
- inv.ModFile = ""
- inv.ModFlag = ""
- stdoutBytes, err := r.Run(ctx, inv)
- if err != nil {
- return 0, err
- }
- stdout := stdoutBytes.String()
- if len(stdout) < 3 {
- return 0, fmt.Errorf("bad ReleaseTags output: %q", stdout)
- }
- // Split up "[go1.1 go1.15]"
- tags := strings.Fields(stdout[1 : len(stdout)-2])
- for i := len(tags) - 1; i >= 0; i-- {
- var version int
- if _, err := fmt.Sscanf(tags[i], "go1.%d", &version); err != nil {
- continue
- }
- return version, nil
- }
- return 0, fmt.Errorf("no parseable ReleaseTags in %v", tags)
-}