forked from TrueCloudLab/lego
73 lines
1.4 KiB
Go
73 lines
1.4 KiB
Go
package cmd
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import (
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"fmt"
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"io"
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"os"
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"strings"
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"text/tabwriter"
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"github.com/urfave/cli"
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)
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func createDNSHelp() cli.Command {
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return cli.Command{
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Name: "dnshelp",
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Usage: "Shows additional help for the '--dns' global option",
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Action: dnsHelp,
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Flags: []cli.Flag{
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cli.StringFlag{
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Name: "code, c",
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Usage: fmt.Sprintf("DNS code: %s", allDNSCodes()),
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},
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},
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}
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}
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func dnsHelp(ctx *cli.Context) error {
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code := ctx.String("code")
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if code == "" {
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w := tabwriter.NewWriter(os.Stdout, 0, 0, 2, ' ', 0)
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ew := &errWriter{w: w}
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ew.writeln(`Credentials for DNS providers must be passed through environment variables.`)
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ew.writeln()
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ew.writeln(`To display the documentation for a DNS providers:`)
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ew.writeln()
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ew.writeln("\t$ lego dnshelp -c code")
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ew.writeln()
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ew.writeln("All DNS codes:")
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ew.writef("\t%s\n", allDNSCodes())
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ew.writeln()
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ew.writeln("More information: https://go-acme.github.io/lego/dns")
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if ew.err != nil {
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return ew.err
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}
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return w.Flush()
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}
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return displayDNSHelp(strings.ToLower(code))
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}
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type errWriter struct {
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w io.Writer
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err error
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}
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func (ew *errWriter) writeln(a ...interface{}) {
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if ew.err != nil {
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return
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}
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_, ew.err = fmt.Fprintln(ew.w, a...)
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}
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func (ew *errWriter) writef(format string, a ...interface{}) {
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if ew.err != nil {
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return
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}
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_, ew.err = fmt.Fprintf(ew.w, format, a...)
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}
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