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`cmd/simplexcalc/` now holds only `main.go`, whose body is one call, `os.Exit(cli.Main(version))`, as the Go style guide requires. The command tree and the `run` and `version` commands moved unchanged into `internal/cli`, with tests for `version` and for an unknown command. Output streams, exit statuses and the `-X main.version` build flag are as before. Disclosure: the comment in `execute` saying cobra has already printed the error is false, since the root command silences cobra's errors; it moved unchanged and is left for a follow-up. Model: opus-5-5
50 lines
1.4 KiB
Go
50 lines
1.4 KiB
Go
package cli
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import (
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"fmt"
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"runtime"
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"github.com/spf13/cobra"
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)
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// rootCmd builds the command tree. Configuration comes from the
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// environment (see internal/config), not from flags: the bot runs in a
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// container, where the environment is the interface, and one source of
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// truth means there is no precedence rule to get wrong.
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func rootCmd(version string) *cobra.Command {
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root := &cobra.Command{
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Use: appname,
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Short: appname + " — a SimpleX Chat bot that answers arithmetic",
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Long: appname + " is a SimpleX Chat bot that answers arithmetic.\n\n" +
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"It runs the simplex-chat command-line client, which must be on\n" +
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"PATH. Configuration is read from the environment and from an\n" +
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"optional .env file in the working directory. See README.md\n" +
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"for the full list of variables.",
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SilenceUsage: true,
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// Without this, cobra prints the error itself and main prints
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// it again.
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SilenceErrors: true,
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}
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root.AddCommand(runCmd(version), versionCmd(version))
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return root
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}
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func versionCmd(version string) *cobra.Command {
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return &cobra.Command{
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Use: "version",
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Short: "print the version and exit",
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Args: cobra.NoArgs,
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RunE: func(cmd *cobra.Command, _ []string) error {
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_, err := fmt.Fprintf(cmd.OutOrStdout(), "%s %s %s/%s\n",
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appname, version, runtime.GOOS, runtime.GOARCH)
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if err != nil {
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return fmt.Errorf("writing version: %w", err)
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}
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return nil
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},
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}
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}
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