Refactor podman image command output

Leverage new report.Formatter allowing better compatibility from
podman command output.

Follow on PR's will cover containers, etc.

See #10974

Signed-off-by: Jhon Honce <jhonce@redhat.com>

5 files changed, 54 insertions, 92 deletions

diff --git a/cmd/podman/images/history.go b/cmd/podman/images/history.go
index cc7b1b4eb..ac693a87b 100644
--- a/cmd/podman/images/history.go
+++ b/cmd/podman/images/history.go
@@ -1,7 +1,6 @@
 package images
 
 import (
-	"context"
 	"fmt"
 	"os"
 	"strings"
@@ -79,7 +78,7 @@ func historyFlags(cmd *cobra.Command) {
 }
 
 func history(cmd *cobra.Command, args []string) error {
-	results, err := registry.ImageEngine().History(context.Background(), args[0], entities.ImageHistoryOptions{})
+	results, err := registry.ImageEngine().History(registry.Context(), args[0], entities.ImageHistoryOptions{})
 	if err != nil {
 		return err
 	}
@@ -111,37 +110,32 @@ func history(cmd *cobra.Command, args []string) error {
 		hr = append(hr, historyReporter{l})
 	}
 
-	hdrs := report.Headers(historyReporter{}, map[string]string{
-		"CreatedBy": "CREATED BY",
-	})
+	rpt := report.New(os.Stdout, cmd.Name())
+	defer rpt.Flush()
 
-	// Defaults
-	row := "{{.ID}}\t{{.Created}}\t{{.CreatedBy}}\t{{.Size}}\t{{.Comment}}\n"
 	switch {
-	case cmd.Flags().Changed("format"):
-		row = report.NormalizeFormat(opts.format)
 	case opts.quiet:
-		row = "{{.ID}}\n"
+		rpt, err = rpt.Parse(report.OriginUser, "{{range .}}{{.ID}}\n{{end -}}")
+	case cmd.Flags().Changed("format"):
+		rpt, err = rpt.Parse(report.OriginUser, cmd.Flag("format").Value.String())
+	default:
+		format := "{{range .}}{{.ID}}\t{{.Created}}\t{{.CreatedBy}}\t{{.Size}}\t{{.Comment}}\n{{end -}}"
+		rpt, err = rpt.Parse(report.OriginPodman, format)
 	}
-	format := report.EnforceRange(row)
-
-	tmpl, err := report.NewTemplate("history").Parse(format)
 	if err != nil {
 		return err
 	}
 
-	w, err := report.NewWriterDefault(os.Stdout)
-	if err != nil {
-		return err
-	}
-	defer w.Flush()
+	if rpt.RenderHeaders {
+		hdrs := report.Headers(historyReporter{}, map[string]string{
+			"CreatedBy": "CREATED BY",
+		})
 
-	if !opts.quiet && !cmd.Flags().Changed("format") {
-		if err := tmpl.Execute(w, hdrs); err != nil {
+		if err := rpt.Execute(hdrs); err != nil {
 			return errors.Wrapf(err, "failed to write report column headers")
 		}
 	}
-	return tmpl.Execute(w, hr)
+	return rpt.Execute(hr)
 }
 
 type historyReporter struct {
diff --git a/cmd/podman/images/list.go b/cmd/podman/images/list.go
index 01286daf2..61514daa7 100644
--- a/cmd/podman/images/list.go
+++ b/cmd/podman/images/list.go
@@ -117,7 +117,7 @@ func images(cmd *cobra.Command, args []string) error {
 		listOptions.Filter = append(listOptions.Filter, "reference="+args[0])
 	}
 
-	if cmd.Flag("sort").Changed && !sortFields.Contains(listFlag.sort) {
+	if cmd.Flags().Changed("sort") && !sortFields.Contains(listFlag.sort) {
 		return fmt.Errorf("\"%s\" is not a valid field for sorting. Choose from: %s",
 			listFlag.sort, sortFields.String())
 	}
@@ -140,7 +140,7 @@ func images(cmd *cobra.Command, args []string) error {
 		if cmd.Flags().Changed("format") && !report.HasTable(listFlag.format) {
 			listFlag.noHeading = true
 		}
-		return writeTemplate(imgs)
+		return writeTemplate(cmd, imgs)
 	}
 }
 
@@ -186,38 +186,31 @@ func writeJSON(images []imageReporter) error {
 	return nil
 }
 
-func writeTemplate(imgs []imageReporter) error {
+func writeTemplate(cmd *cobra.Command, imgs []imageReporter) error {
 	hdrs := report.Headers(imageReporter{}, map[string]string{
 		"ID":       "IMAGE ID",
 		"ReadOnly": "R/O",
 	})
 
-	var format string
-	if listFlag.format == "" {
-		format = lsFormatFromFlags(listFlag)
-	} else {
-		format = report.NormalizeFormat(listFlag.format)
-		format = report.EnforceRange(format)
-	}
+	rpt := report.New(os.Stdout, cmd.Name())
+	defer rpt.Flush()
 
-	tmpl, err := report.NewTemplate("list").Parse(format)
-	if err != nil {
-		return err
+	var err error
+	if cmd.Flags().Changed("format") {
+		rpt, err = rpt.Parse(report.OriginUser, cmd.Flag("format").Value.String())
+	} else {
+		rpt, err = rpt.Parse(report.OriginPodman, lsFormatFromFlags(listFlag))
 	}
-
-	w, err := report.NewWriterDefault(os.Stdout)
 	if err != nil {
 		return err
 	}
-	defer w.Flush()
 
-	if !listFlag.noHeading {
-		if err := tmpl.Execute(w, hdrs); err != nil {
+	if rpt.RenderHeaders && !listFlag.noHeading {
+		if err := rpt.Execute(hdrs); err != nil {
 			return err
 		}
 	}
-
-	return tmpl.Execute(w, imgs)
+	return rpt.Execute(imgs)
 }
 
 func sortImages(imageS []*entities.ImageSummary) ([]imageReporter, error) {
diff --git a/cmd/podman/images/mount.go b/cmd/podman/images/mount.go
index 89c00cb70..cdeb9eecf 100644
--- a/cmd/podman/images/mount.go
+++ b/cmd/podman/images/mount.go
@@ -87,7 +87,7 @@ func mount(cmd *cobra.Command, args []string) error {
 	case report.IsJSON(mountOpts.Format):
 		return printJSON(reports)
 	case mountOpts.Format == "":
-		break // default format
+		break // see default format below
 	default:
 		return errors.Errorf("unknown --format argument: %q", mountOpts.Format)
 	}
@@ -97,19 +97,12 @@ func mount(cmd *cobra.Command, args []string) error {
 		mrs = append(mrs, mountReporter{r})
 	}
 
-	row := "{{range . }}{{.ID}}\t{{.Path}}\n{{end -}}"
-	tmpl, err := report.NewTemplate("mounts").Parse(row)
+	rpt, err := report.New(os.Stdout, cmd.Name()).Parse(report.OriginPodman, "{{range . }}{{.ID}}\t{{.Path}}\n{{end -}}")
 	if err != nil {
 		return err
 	}
-
-	w, err := report.NewWriterDefault(os.Stdout)
-	if err != nil {
-		return err
-	}
-	defer w.Flush()
-
-	return tmpl.Execute(w, mrs)
+	defer rpt.Flush()
+	return rpt.Execute(mrs)
 }
 
 func printJSON(reports []*entities.ImageMountReport) error {
diff --git a/cmd/podman/images/search.go b/cmd/podman/images/search.go
index c9a4793aa..0791ac02c 100644
--- a/cmd/podman/images/search.go
+++ b/cmd/podman/images/search.go
@@ -149,9 +149,9 @@ func imageSearch(cmd *cobra.Command, args []string) error {
 		searchReport[i].Description = d
 	}
 
-	hdrs := report.Headers(entities.ImageSearchReport{}, nil)
-	renderHeaders := true
-	var row string
+	rpt := report.New(os.Stdout, cmd.Name())
+	defer rpt.Flush()
+
 	switch {
 	case searchOptions.ListTags:
 		if len(searchOptions.Filters) != 0 {
@@ -161,39 +161,30 @@ func imageSearch(cmd *cobra.Command, args []string) error {
 			listTagsEntries := buildListTagsJSON(searchReport)
 			return printArbitraryJSON(listTagsEntries)
 		}
-		row = "{{.Name}}\t{{.Tag}}\n"
+		rpt, err = rpt.Parse(report.OriginPodman, "{{range .}}{{.Name}}\t{{.Tag}}\n{{end -}}")
 	case isJSON:
 		return printArbitraryJSON(searchReport)
 	case cmd.Flags().Changed("format"):
-		renderHeaders = report.HasTable(searchOptions.Format)
-		row = report.NormalizeFormat(searchOptions.Format)
+		rpt, err = rpt.Parse(report.OriginUser, searchOptions.Format)
 	default:
-		row = "{{.Name}}\t{{.Description}}"
+		row := "{{.Name}}\t{{.Description}}"
 		if searchOptions.Compatible {
 			row += "\t{{.Stars}}\t{{.Official}}\t{{.Automated}}"
 		}
-		row += "\n"
+		row = "{{range . }}" + row + "\n{{end -}}"
+		rpt, err = rpt.Parse(report.OriginPodman, row)
 	}
-	format := report.EnforceRange(row)
-
-	tmpl, err := report.NewTemplate("search").Parse(format)
 	if err != nil {
 		return err
 	}
 
-	w, err := report.NewWriterDefault(os.Stdout)
-	if err != nil {
-		return err
-	}
-	defer w.Flush()
-
-	if renderHeaders {
-		if err := tmpl.Execute(w, hdrs); err != nil {
-			return errors.Wrapf(err, "failed to write search column headers")
+	if rpt.RenderHeaders {
+		hdrs := report.Headers(entities.ImageSearchReport{}, nil)
+		if err := rpt.Execute(hdrs); err != nil {
+			return errors.Wrapf(err, "failed to write report column headers")
 		}
 	}
-
-	return tmpl.Execute(w, searchReport)
+	return rpt.Execute(searchReport)
 }
 
 func printArbitraryJSON(v interface{}) error {
diff --git a/cmd/podman/images/trust_show.go b/cmd/podman/images/trust_show.go
index c0e56f504..04ea24ca5 100644
--- a/cmd/podman/images/trust_show.go
+++ b/cmd/podman/images/trust_show.go
@@ -48,11 +48,12 @@ func showTrust(cmd *cobra.Command, args []string) error {
 	if err != nil {
 		return err
 	}
-	if showTrustOptions.Raw {
+
+	switch {
+	case showTrustOptions.Raw:
 		fmt.Println(string(trust.Raw))
 		return nil
-	}
-	if showTrustOptions.JSON {
+	case showTrustOptions.JSON:
 		b, err := json.MarshalIndent(trust.Policies, "", "  ")
 		if err != nil {
 			return err
@@ -60,23 +61,13 @@ func showTrust(cmd *cobra.Command, args []string) error {
 		fmt.Println(string(b))
 		return nil
 	}
+	rpt := report.New(os.Stdout, cmd.Name())
+	defer rpt.Flush()
 
-	format := "{{range . }}{{.RepoName}}\t{{.Type}}\t{{.GPGId}}\t{{.SignatureStore}}\n{{end -}}"
-	tmpl, err := report.NewTemplate("list").Parse(format)
-	if err != nil {
-		return err
-	}
-
-	w, err := report.NewWriterDefault(os.Stdout)
+	rpt, err = rpt.Parse(report.OriginPodman,
+		"{{range . }}{{.RepoName}}\t{{.Type}}\t{{.GPGId}}\t{{.SignatureStore}}\n{{end -}}")
 	if err != nil {
 		return err
 	}
-
-	if err := tmpl.Execute(w, trust.Policies); err != nil {
-		return err
-	}
-	if err := w.Flush(); err != nil {
-		return err
-	}
-	return nil
+	return rpt.Execute(trust.Policies)
 }