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authorEd Santiago <santiago@redhat.com>2019-03-14 08:47:15 -0600
committerEd Santiago <santiago@redhat.com>2019-03-14 12:15:45 -0600
commit1e124306dbd35a4cfdf3f585119a2c4441ec543d (patch)
tree64a55fc5a8f86b253b30941861c0cb9e160d0f50 /cmd
parent8f82edbcb3f43e39e037327ad39f4e660e11f20e (diff)
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save-load-export: clear cli-parsing default
...in order to silence Cobra's usually-helpful "(default xxx)" message. Initialization is now done in code, by testing for empty string and setting that to /dev/std{in,out} as appropriate; make special note of load.go where there's mild duplication between a local variable and cliconfig. Signed-off-by: Ed Santiago <santiago@redhat.com>
Diffstat (limited to 'cmd')
-rw-r--r--cmd/podman/export.go7
-rw-r--r--cmd/podman/load.go7
-rw-r--r--cmd/podman/save.go8
3 files changed, 13 insertions, 9 deletions
diff --git a/cmd/podman/export.go b/cmd/podman/export.go
index 881215e88..92633facd 100644
--- a/cmd/podman/export.go
+++ b/cmd/podman/export.go
@@ -36,7 +36,7 @@ func init() {
exportCommand.SetHelpTemplate(HelpTemplate())
exportCommand.SetUsageTemplate(UsageTemplate())
flags := exportCommand.Flags()
- flags.StringVarP(&exportCommand.Output, "output", "o", "/dev/stdout", "Write to a file instead of terminal")
+ flags.StringVarP(&exportCommand.Output, "output", "o", "", "Write to a specified file (default: stdout, which must be redirected)")
}
// exportCmd saves a container to a tarball on disk
@@ -60,15 +60,16 @@ func exportCmd(c *cliconfig.ExportValues) error {
}
output := c.Output
- if runtime.Remote && (output == "/dev/stdout" || len(output) == 0) {
+ if runtime.Remote && len(output) == 0 {
return errors.New("remote client usage must specify an output file (-o)")
}
- if output == "/dev/stdout" {
+ if len(output) == 0 {
file := os.Stdout
if logrus.IsTerminal(file) {
return errors.Errorf("refusing to export to terminal. Use -o flag or redirect")
}
+ output = "/dev/stdout"
}
if err := parse.ValidateFileName(output); err != nil {
diff --git a/cmd/podman/load.go b/cmd/podman/load.go
index aedbdd8ac..46add699e 100644
--- a/cmd/podman/load.go
+++ b/cmd/podman/load.go
@@ -34,7 +34,7 @@ func init() {
loadCommand.SetHelpTemplate(HelpTemplate())
loadCommand.SetUsageTemplate(UsageTemplate())
flags := loadCommand.Flags()
- flags.StringVarP(&loadCommand.Input, "input", "i", "/dev/stdin", "Read from archive file instead of from terminal")
+ flags.StringVarP(&loadCommand.Input, "input", "i", "", "Read from specified archive file (default: stdin)")
flags.BoolVarP(&loadCommand.Quiet, "quiet", "q", false, "Suppress the output")
flags.StringVar(&loadCommand.SignaturePolicy, "signature-policy", "", "Pathname of signature policy file (not usually used)")
@@ -64,7 +64,10 @@ func loadCmd(c *cliconfig.LoadValues) error {
if runtime.Remote && len(input) == 0 {
return errors.New("the remote client requires you to load via -i and a tarball")
}
- if input == "/dev/stdin" {
+ if len(input) == 0 {
+ input = "/dev/stdin"
+ c.Input = input
+
fi, err := os.Stdin.Stat()
if err != nil {
return err
diff --git a/cmd/podman/save.go b/cmd/podman/save.go
index 807f8b132..c10679740 100644
--- a/cmd/podman/save.go
+++ b/cmd/podman/save.go
@@ -58,7 +58,7 @@ func init() {
flags := saveCommand.Flags()
flags.BoolVar(&saveCommand.Compress, "compress", false, "Compress tarball image layers when saving to a directory using the 'dir' transport. (default is same compression type as source)")
flags.StringVar(&saveCommand.Format, "format", v2s2Archive, "Save image to oci-archive, oci-dir (directory with oci manifest type), docker-archive, docker-dir (directory with v2s2 manifest type)")
- flags.StringVarP(&saveCommand.Output, "output", "o", "/dev/stdout", "Write to a file instead of terminal")
+ flags.StringVarP(&saveCommand.Output, "output", "o", "", "Write to a specified file (default: stdout, which must be redirected)")
flags.BoolVarP(&saveCommand.Quiet, "quiet", "q", false, "Suppress the output")
}
@@ -79,14 +79,14 @@ func saveCmd(c *cliconfig.SaveValues) error {
return errors.Errorf("--compress can only be set when --format is either 'oci-dir' or 'docker-dir'")
}
- output := c.Output
- if output == "/dev/stdout" {
+ if len(c.Output) == 0 {
fi := os.Stdout
if logrus.IsTerminal(fi) {
return errors.Errorf("refusing to save to terminal. Use -o flag or redirect")
}
+ c.Output = "/dev/stdout"
}
- if err := parse.ValidateFileName(output); err != nil {
+ if err := parse.ValidateFileName(c.Output); err != nil {
return err
}
return runtime.SaveImage(getContext(), c)