From 9917fc0f956c849ec2d52f3f873aa6eaa3f25e72 Mon Sep 17 00:00:00 2001 From: Daniel J Walsh Date: Wed, 29 Jul 2020 14:10:59 -0400 Subject: Don't crash when giving bogus format commands Currently if you give a bogus flag to --format it will crash the formatter. With this change we will get a nice error. podman images --format '{{ bogus }}' Error: template: list:1: function "bogus" not defined versus /bin/podman.old images --format '{{ bogus }}' panic: template: list:1: function "bogus" not defined goroutine 1 [running]: Signed-off-by: Daniel J Walsh --- cmd/podman/images/history.go | 5 ++++- cmd/podman/images/list.go | 6 +++++- 2 files changed, 9 insertions(+), 2 deletions(-) (limited to 'cmd/podman/images') diff --git a/cmd/podman/images/history.go b/cmd/podman/images/history.go index ef5b4be26..f3a41f6b9 100644 --- a/cmd/podman/images/history.go +++ b/cmd/podman/images/history.go @@ -125,7 +125,10 @@ func history(cmd *cobra.Command, args []string) error { } format := hdr + "{{range . }}" + row + "{{end}}" - tmpl := template.Must(template.New("report").Parse(format)) + tmpl, err := template.New("report").Parse(format) + if err != nil { + return err + } w := tabwriter.NewWriter(os.Stdout, 8, 2, 2, ' ', 0) err = tmpl.Execute(w, hr) if err != nil { diff --git a/cmd/podman/images/list.go b/cmd/podman/images/list.go index 4552901f7..ee0f64d99 100644 --- a/cmd/podman/images/list.go +++ b/cmd/podman/images/list.go @@ -168,7 +168,11 @@ func writeTemplate(imgs []imageReporter) error { } } format := hdr + "{{range . }}" + row + "{{end}}" - tmpl := template.Must(template.New("list").Parse(format)) + tmpl, err := template.New("list").Parse(format) + if err != nil { + return err + } + tmpl = template.Must(tmpl, nil) w := tabwriter.NewWriter(os.Stdout, 8, 2, 2, ' ', 0) defer w.Flush() return tmpl.Execute(w, imgs) -- cgit v1.2.3-54-g00ecf