55 lines
1.3 KiB
Go
55 lines
1.3 KiB
Go
package cli
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import (
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"errors"
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"fmt"
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"io"
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"runtime/debug"
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"strings"
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"github.com/spf13/cobra"
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)
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// ErrNoBuildInfo is returned by `sutil info` when the binary carries no
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// Go build information, which only happens for binaries not built with
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// module support.
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var ErrNoBuildInfo = errors.New("sutil: no build information in this binary")
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// newInfoCommand returns `sutil info`, which prints the build version, the
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// Go toolchain version, the module path, and the VCS metadata recorded by
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// the Go toolchain at build time.
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func newInfoCommand(p Params) *cobra.Command {
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return &cobra.Command{
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Use: "info",
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Short: "Print build information",
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Args: cobra.NoArgs,
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RunE: func(cmd *cobra.Command, _ []string) error {
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return writeBuildInfo(cmd.OutOrStdout(), p.Version)
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},
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}
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}
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// writeBuildInfo writes one "key: value" line per fact to w.
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func writeBuildInfo(w io.Writer, version string) error {
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info, ok := debug.ReadBuildInfo()
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if !ok {
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return ErrNoBuildInfo
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}
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lines := []string{
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"version: " + version,
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"go: " + info.GoVersion,
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"module: " + info.Main.Path,
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}
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for _, setting := range info.Settings {
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if strings.HasPrefix(setting.Key, "vcs.") {
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lines = append(lines, setting.Key+": "+setting.Value)
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}
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}
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_, err := fmt.Fprintln(w, strings.Join(lines, "\n"))
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return err
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}
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