38 lines
863 B
Go
38 lines
863 B
Go
package build
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import (
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"context"
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"fmt"
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"os/exec"
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"regexp"
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"strings"
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"github.com/hashicorp/go-version"
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)
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// GetGoVersion obtains version of locally installed Go via "go version"
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func GetGoVersion(ctx context.Context) (*version.Version, error) {
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cmd := exec.CommandContext(ctx, "go", "version")
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out, err := cmd.CombinedOutput()
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if err != nil {
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return nil, fmt.Errorf("unable to build: %w\n%s", err, out)
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}
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output := strings.TrimSpace(string(out))
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// e.g. "go version go1.15"
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re := regexp.MustCompile(`^go version go([0-9.]+)\s+`)
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matches := re.FindStringSubmatch(output)
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if len(matches) != 2 {
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return nil, fmt.Errorf("unexpected go version output: %q", output)
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}
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rawGoVersion := matches[1]
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v, err := version.NewVersion(rawGoVersion)
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if err != nil {
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return nil, fmt.Errorf("unexpected go version output: %w", err)
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}
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return v, nil
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}
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