DockerCLI/cli/command/formatter/context.go

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package formatter
const (
// ClientContextTableFormat is the default client context format.
ClientContextTableFormat = "table {{.Name}}{{if .Current}} *{{end}}\t{{.Description}}\t{{.DockerEndpoint}}\t{{.Error}}"
dockerEndpointHeader = "DOCKER ENDPOINT"
quietContextFormat = "{{.Name}}"
maxErrLength = 45
)
// NewClientContextFormat returns a Format for rendering using a Context
func NewClientContextFormat(source string, quiet bool) Format {
if quiet {
return quietContextFormat
}
if source == TableFormatKey {
return ClientContextTableFormat
}
return Format(source)
}
// ClientContext is a context for display
type ClientContext struct {
Name string
Description string
DockerEndpoint string
Current bool
Error string
}
// ClientContextWrite writes formatted contexts using the Context
func ClientContextWrite(ctx Context, contexts []*ClientContext) error {
render := func(format func(subContext SubContext) error) error {
for _, context := range contexts {
if err := format(&clientContextContext{c: context}); err != nil {
return err
}
}
return nil
}
return ctx.Write(newClientContextContext(), render)
}
type clientContextContext struct {
HeaderContext
c *ClientContext
}
func newClientContextContext() *clientContextContext {
ctx := clientContextContext{}
ctx.Header = SubHeaderContext{
"Name": NameHeader,
"Description": DescriptionHeader,
"DockerEndpoint": dockerEndpointHeader,
"Error": ErrorHeader,
}
return &ctx
}
func (c *clientContextContext) MarshalJSON() ([]byte, error) {
return MarshalJSON(c)
}
func (c *clientContextContext) Current() bool {
return c.c.Current
}
func (c *clientContextContext) Name() string {
return c.c.Name
}
func (c *clientContextContext) Description() string {
return c.c.Description
}
func (c *clientContextContext) DockerEndpoint() string {
return c.c.DockerEndpoint
}
// Error returns the truncated error (if any) that occurred when loading the context.
func (c *clientContextContext) Error() string {
// TODO(thaJeztah) add "--no-trunc" option to context ls and set default to 30 cols to match "docker service ps"
return Ellipsis(c.c.Error, maxErrLength)
}