diff options
Diffstat (limited to 'cmd/podman/formats/formats.go')
-rw-r--r-- | cmd/podman/formats/formats.go | 171 |
1 files changed, 0 insertions, 171 deletions
diff --git a/cmd/podman/formats/formats.go b/cmd/podman/formats/formats.go deleted file mode 100644 index 37f9b8a20..000000000 --- a/cmd/podman/formats/formats.go +++ /dev/null @@ -1,171 +0,0 @@ -package formats - -import ( - "bytes" - "encoding/json" - "fmt" - "io" - "os" - "strings" - "text/tabwriter" - "text/template" - - "github.com/ghodss/yaml" - "github.com/pkg/errors" - "golang.org/x/crypto/ssh/terminal" -) - -const ( - // JSONString const to save on duplicate variable names - JSONString = "json" - // IDString const to save on duplicates for Go templates - IDString = "{{.ID}}" - - parsingErrorStr = "Template parsing error" -) - -// 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{} -} - -func setJSONFormatEncoder(isTerminal bool, w io.Writer) *json.Encoder { - enc := json.NewEncoder(w) - enc.SetIndent("", " ") - if isTerminal { - enc.SetEscapeHTML(false) - } - return enc -} - -// Out method for JSON Arrays -func (j JSONStructArray) Out() error { - buf := bytes.NewBuffer(nil) - enc := setJSONFormatEncoder(terminal.IsTerminal(int(os.Stdout.Fd())), buf) - if err := enc.Encode(j.Output); err != nil { - return err - } - data := buf.Bytes() - - // 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", data) - humanNewLine() - 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, parsingErrorStr) - } - 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, parsingErrorStr) - } - for i, raw := range t.Output { - basicTmpl := tmpl.Funcs(basicFunctions) - if err := basicTmpl.Execute(w, raw); err != nil { - return errors.Wrapf(err, parsingErrorStr) - } - if i != len(t.Output)-1 { - fmt.Fprintln(w, "") - continue - } - } - 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", data) - humanNewLine() - 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 - } - humanNewLine() - 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.Printf("%s", string(buf)) - humanNewLine() - return nil -} - -// humanNewLine prints a new line at the end of the output only if stdout is the terminal -func humanNewLine() { - if terminal.IsTerminal(int(os.Stdout.Fd())) { - fmt.Println() - } -} |