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author | Daniel J Walsh <dwalsh@redhat.com> | 2017-12-15 16:58:36 -0500 |
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committer | Atomic Bot <atomic-devel@projectatomic.io> | 2017-12-18 16:46:05 +0000 |
commit | 5770dc2640c216525ab84031e3712fcc46b3b087 (patch) | |
tree | 8a1c5c4e4a6ce6a35a3767247623a62bfd698f77 /cmd/podman/formats/formats.go | |
parent | de3468e120d489d046c08dad72ba2262e222ccb1 (diff) | |
download | podman-5770dc2640c216525ab84031e3712fcc46b3b087.tar.gz podman-5770dc2640c216525ab84031e3712fcc46b3b087.tar.bz2 podman-5770dc2640c216525ab84031e3712fcc46b3b087.zip |
Rename all references to kpod to podman
The decision is in, kpod is going to be named podman.
Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>
Closes: #145
Approved by: umohnani8
Diffstat (limited to 'cmd/podman/formats/formats.go')
-rw-r--r-- | cmd/podman/formats/formats.go | 143 |
1 files changed, 143 insertions, 0 deletions
diff --git a/cmd/podman/formats/formats.go b/cmd/podman/formats/formats.go new file mode 100644 index 000000000..4b6527b30 --- /dev/null +++ b/cmd/podman/formats/formats.go @@ -0,0 +1,143 @@ +package formats + +import ( + "bytes" + "encoding/json" + "fmt" + "os" + "strings" + "text/tabwriter" + "text/template" + + "github.com/ghodss/yaml" + "github.com/pkg/errors" +) + +const ( + // JSONString const to save on duplicate variable names + JSONString = "json" + // IDString const to save on duplicates for Go templates + IDString = "{{.ID}}" +) + +// Writer interface for outputs +type Writer interface { + Out() error +} + +// JSONStructArray for JSON output +type JSONStructArray struct { + Output []interface{} +} + +// StdoutTemplateArray for Go template output +type StdoutTemplateArray struct { + Output []interface{} + Template string + Fields map[string]string +} + +// JSONStruct for JSON output +type JSONStruct struct { + Output interface{} +} + +// StdoutTemplate for Go template output +type StdoutTemplate struct { + Output interface{} + Template string + Fields map[string]string +} + +// YAMLStruct for YAML output +type YAMLStruct struct { + Output interface{} +} + +// Out method for JSON Arrays +func (j JSONStructArray) Out() error { + data, err := json.MarshalIndent(j.Output, "", " ") + if err != nil { + return err + } + + // JSON returns a byte array with a literal null [110 117 108 108] in it + // if it is passed empty data. We used bytes.Compare to see if that is + // the case. + if diff := bytes.Compare(data, []byte("null")); diff == 0 { + data = []byte("[]") + } + + // If the we did get NULL back, we should spit out {} which is + // at least valid JSON for the consumer. + fmt.Printf("%s\n", data) + return nil +} + +// Out method for Go templates +func (t StdoutTemplateArray) Out() error { + w := tabwriter.NewWriter(os.Stdout, 0, 0, 3, ' ', 0) + if strings.HasPrefix(t.Template, "table") { + // replace any spaces with tabs in template so that tabwriter can align it + t.Template = strings.Replace(strings.TrimSpace(t.Template[5:]), " ", "\t", -1) + headerTmpl, err := template.New("header").Funcs(headerFunctions).Parse(t.Template) + if err != nil { + return errors.Wrapf(err, "Template parsing error") + } + err = headerTmpl.Execute(w, t.Fields) + if err != nil { + return err + } + fmt.Fprintln(w, "") + } + t.Template = strings.Replace(t.Template, " ", "\t", -1) + tmpl, err := template.New("image").Funcs(basicFunctions).Parse(t.Template) + if err != nil { + return errors.Wrapf(err, "Template parsing error") + } + for _, img := range t.Output { + basicTmpl := tmpl.Funcs(basicFunctions) + err = basicTmpl.Execute(w, img) + if err != nil { + return err + } + fmt.Fprintln(w, "") + } + return w.Flush() +} + +// Out method for JSON struct +func (j JSONStruct) Out() error { + data, err := json.MarshalIndent(j.Output, "", " ") + if err != nil { + return err + } + fmt.Printf("%s\n", data) + return nil +} + +//Out method for Go templates +func (t StdoutTemplate) Out() error { + tmpl, err := template.New("image").Parse(t.Template) + if err != nil { + return errors.Wrapf(err, "template parsing error") + } + err = tmpl.Execute(os.Stdout, t.Output) + if err != nil { + return err + } + fmt.Println() + return nil +} + +// Out method for YAML +func (y YAMLStruct) Out() error { + var buf []byte + var err error + buf, err = yaml.Marshal(y.Output) + if err != nil { + return err + } + fmt.Println(string(buf)) + return nil +} |