moby/cli/command/formatter/plugin.go
Yong Tang ea61dac9e6 Allow --format to use different delim in table format
This fix is an attempt to address
https://github.com/docker/docker/pull/28213#issuecomment-273840405

Currently when specify table format with table `--format "table {{.ID}}..."`,
the delimiter in the header section of the table is always `"\t"`.
That is actually different from the content of the table as the delimiter
could be anything (or even contatenated with `.`, for example):
```
$ docker service ps web --format 'table {{.Name}}.{{.ID}}' --no-trunc

NAME                ID
web.1.inyhxhvjcijl0hdbu8lgrwwh7
 \_ web.1.p9m4kx2srjqmfms4igam0uqlb
```

This fix is an attampt to address the skewness of the table when delimiter
is not `"\t"`.

The basic idea is that, when header consists of `table` key, the header section
will be redendered the same way as content section. A map mapping each
placeholder name to the HEADER entry name is used for the context of the header.

Unit tests have been updated and added to cover the changes.

This fix is related to #28313.

Signed-off-by: Yong Tang <yong.tang.github@outlook.com>
2017-02-10 19:34:50 -08:00

95 lines
2.1 KiB
Go

package formatter
import (
"strings"
"github.com/docker/docker/api/types"
"github.com/docker/docker/pkg/stringid"
"github.com/docker/docker/pkg/stringutils"
)
const (
defaultPluginTableFormat = "table {{.ID}}\t{{.Name}}\t{{.Description}}\t{{.Enabled}}"
pluginIDHeader = "ID"
descriptionHeader = "DESCRIPTION"
enabledHeader = "ENABLED"
)
// NewPluginFormat returns a Format for rendering using a plugin Context
func NewPluginFormat(source string, quiet bool) Format {
switch source {
case TableFormatKey:
if quiet {
return defaultQuietFormat
}
return defaultPluginTableFormat
case RawFormatKey:
if quiet {
return `plugin_id: {{.ID}}`
}
return `plugin_id: {{.ID}}\nname: {{.Name}}\ndescription: {{.Description}}\nenabled: {{.Enabled}}\n`
}
return Format(source)
}
// PluginWrite writes the context
func PluginWrite(ctx Context, plugins []*types.Plugin) error {
render := func(format func(subContext subContext) error) error {
for _, plugin := range plugins {
pluginCtx := &pluginContext{trunc: ctx.Trunc, p: *plugin}
if err := format(pluginCtx); err != nil {
return err
}
}
return nil
}
pluginCtx := pluginContext{}
pluginCtx.header = map[string]string{
"ID": pluginIDHeader,
"Name": nameHeader,
"Description": descriptionHeader,
"Enabled": enabledHeader,
"PluginReference": imageHeader,
}
return ctx.Write(&pluginCtx, render)
}
type pluginContext struct {
HeaderContext
trunc bool
p types.Plugin
}
func (c *pluginContext) MarshalJSON() ([]byte, error) {
return marshalJSON(c)
}
func (c *pluginContext) ID() string {
if c.trunc {
return stringid.TruncateID(c.p.ID)
}
return c.p.ID
}
func (c *pluginContext) Name() string {
return c.p.Name
}
func (c *pluginContext) Description() string {
desc := strings.Replace(c.p.Config.Description, "\n", "", -1)
desc = strings.Replace(desc, "\r", "", -1)
if c.trunc {
desc = stringutils.Ellipsis(desc, 45)
}
return desc
}
func (c *pluginContext) Enabled() bool {
return c.p.Enabled
}
func (c *pluginContext) PluginReference() string {
return c.p.PluginReference
}