podman info: use report.Formatter over Template

Currently the podman command --format output code uses a mix of
report.Formatter and report.Template.

I patched report.Formatter to correctly handle newlines[1]. Since we
cannot fix this with report.Template we have to migrate all users to
report.Formatter. This ensures consistent behavior for all commands.

This change does not change the output.

[1] https://github.com/containers/common/pull/1146

Signed-off-by: Paul Holzinger <pholzing@redhat.com>

cmd/podman/system/info.go

@@ -3,7 +3,6 @@ package system
 import (
 	"fmt"
 	"os"
-	"text/template"
 
 	"github.com/containers/common/pkg/completion"
 	"github.com/containers/common/pkg/report"
@@ -86,14 +85,16 @@ func info(cmd *cobra.Command, args []string) error {
 		}
 		fmt.Println(string(b))
 	case cmd.Flags().Changed("format"):
-		// Cannot use report.New() as it enforces {{range .}} for OriginUser templates
-		tmpl := template.New(cmd.Name()).Funcs(template.FuncMap(report.DefaultFuncs))
-		inFormat = report.NormalizeFormat(inFormat)
-		tmpl, err := tmpl.Parse(inFormat)
+		rpt := report.New(os.Stdout, cmd.Name())
+		defer rpt.Flush()
+
+		// Use OriginUnknown so it does not add an extra range since it
+		// will only be called for a single element and not a slice.
+		rpt, err = rpt.Parse(report.OriginUnknown, inFormat)
 		if err != nil {
 			return err
 		}
-		return tmpl.Execute(os.Stdout, info)
+		return rpt.Execute(info)
 	default:
 		b, err := yaml.Marshal(info)
 		if err != nil {

test/system/610-format.bats

@@ -20,8 +20,6 @@ function teardown() {
 # remove the entire lines, except for pod-inspect, just remove the SKIP
 # but leave "mypod")
 extra_args_table="
-info              | SKIP
-system info       | SKIP
 machine info      | SKIP
 version           | SKIP