Add shared report format flag

examples/core/main.go

@@ -7,6 +7,7 @@ import (
 	"io"
 	"os"
 	"strconv"
+	"text/template"
 
 	commandkit "go.maximumdirect.net/commandkit"
 )
@@ -20,6 +21,15 @@ type reportInput struct {
 	Scenario string
 }
 
+type greetingReport struct {
+	Count     string `json:"count"`
+	Tags      string `json:"tags"`
+	Entered   string `json:"entered"`
+	Canonical string `json:"canonical"`
+}
+
+var greetingTemplate = template.Must(commandkit.ParseTextTemplate("greeting", "Hello; count={{.Count}}; tags={{.Tags}}; entered={{printf \"%q\" .Entered}}; canonical={{printf \"%q\" .Canonical}}\n", nil))
+
 var (
 	errRecoveredFixture = errors.New("a local read failed and was recovered")
 	errWarningFixture   = errors.New("a local warning has a cause")
@@ -50,10 +60,7 @@ func newApp() (*commandkit.App, error) {
 			if input.Tags.Set {
 				tags = fmt.Sprintf("explicit %v", input.Tags.Value)
 			}
-			_ = reporter.RenderOutput(func(writer io.Writer) error {
-				_, err := fmt.Fprintf(writer, "Hello; count=%s; tags=%s; entered=%q; canonical=%q\n", count, tags, invocation.EnteredPath(), invocation.CanonicalPath())
-				return err
-			})
+			_ = reporter.Report(commandkit.Report{Value: greetingReport{Count: count, Tags: tags, Entered: invocation.EnteredPath(), Canonical: invocation.CanonicalPath()}, TextTemplate: greetingTemplate})
 			return commandkit.Success()
 		},
 	})