Change subcommand name: domainlist -> domains

cmd/mailfull/command/domains.go

@@ -0,0 +1,55 @@
+package command
+
+import (
+	"fmt"
+	"sort"
+
+	"github.com/directorz/mailfull-go"
+)
+
+// DomainsCommand represents a DomainsCommand.
+type DomainsCommand struct {
+	Meta
+}
+
+// Synopsis returns a one-line synopsis.
+func (c *DomainsCommand) Synopsis() string {
+	return "Show domains."
+}
+
+// Help returns long-form help text.
+func (c *DomainsCommand) Help() string {
+	txt := fmt.Sprintf(`
+Usage:
+    %s %s
+
+Description:
+    %s
+`,
+		c.CmdName, c.SubCmdName,
+		c.Synopsis())
+
+	return txt[1:]
+}
+
+// Run runs the command and returns the exit status.
+func (c *DomainsCommand) Run(args []string) int {
+	repo, err := mailfull.OpenRepository(".")
+	if err != nil {
+		fmt.Fprintf(c.UI.ErrorWriter, "[ERR] %v\n", err)
+		return 1
+	}
+
+	domains, err := repo.Domains()
+	if err != nil {
+		fmt.Fprintf(c.UI.ErrorWriter, "[ERR] %v\n", err)
+		return 1
+	}
+	sort.Sort(mailfull.DomainSlice(domains))
+
+	for _, domain := range domains {
+		fmt.Fprintf(c.UI.Writer, "%s\n", domain.Name())
+	}
+
+	return 0
+}