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Bind Vars.

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This commit is contained in:
Alec Thomas
2018-07-06 10:44:09 +10:00
parent 17e855bc47
commit 99ff32a85f
4 changed files with 46 additions and 27 deletions
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_examples/docker/main.go
+31 -16
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@@ -2,24 +2,36 @@
package main
import (
"fmt"
"github.com/alecthomas/kong"
)
type Globals struct {
Config string `help:"Location of client config files" default:"~/.docker" type:"path"`
Debug bool `short:"D" help:"Enable debug mode"`
Host []string `short:"H" help:"Daemon socket(s) to connect to"`
LogLevel string `short:"l" help:"Set the logging level (debug|info|warn|error|fatal)" default:"info"`
TLS bool `help:"Use TLS; implied by --tls-verify"`
TLSCACert string `name:"tls-ca-cert" help:"Trust certs signed only by this CA" default:"~/.docker/ca.pem" type:"path"`
TLSCert string `help:"Path to TLS certificate file" default:"~/.docker/cert.pem" type:"path"`
TLSKey string `help:"Path to TLS key file" default:"~/.docker/key.pem" type:"path"`
TLSVerify bool `help:"Use TLS and verify the remote"`
Config string `help:"Location of client config files" default:"~/.docker" type:"path"`
Debug bool `short:"D" help:"Enable debug mode"`
Host []string `short:"H" help:"Daemon socket(s) to connect to"`
LogLevel string `short:"l" help:"Set the logging level (debug|info|warn|error|fatal)" default:"info"`
TLS bool `help:"Use TLS; implied by --tls-verify"`
TLSCACert string `name:"tls-ca-cert" help:"Trust certs signed only by this CA" default:"~/.docker/ca.pem" type:"path"`
TLSCert string `help:"Path to TLS certificate file" default:"~/.docker/cert.pem" type:"path"`
TLSKey string `help:"Path to TLS key file" default:"~/.docker/key.pem" type:"path"`
TLSVerify bool `help:"Use TLS and verify the remote"`
Version VersionFlag `name:"version" help:"Print version information and quit"`
}
type VersionFlag string
func (v VersionFlag) Decode(ctx *kong.DecodeContext) error { return nil }
func (v VersionFlag) IsBool() bool { return true }
func (v VersionFlag) BeforeHook(app *kong.Kong, vars kong.Vars) error {
fmt.Println(vars["version"])
app.Exit(0)
return nil
}
type CLI struct {
Globals
VersionFlag bool `name:"version" help:"Print version information and quit"`
Attach AttachCmd `cmd help:"Attach local standard input, output, and error streams to a running container"`
Build BuildCmd `cmd help:"Build an image from a Dockerfile"`
@@ -65,7 +77,12 @@ type CLI struct {
}
func main() {
cli := CLI{}
cli := CLI{
Globals: Globals{
Version: VersionFlag("0.1.1"),
},
}
ctx := kong.Parse(&cli,
kong.Name("docker"),
kong.Description("A self-sufficient runtime for containers"),
@@ -73,11 +90,9 @@ func main() {
kong.ConfigureHelp(kong.HelpOptions{
Compact: true,
}),
//
kong.Hook(&cli.VersionFlag, func(ctx *kong.Context, path *kong.Path) error {
ctx.Printf("1.0.0").Exit(0)
return nil
}))
kong.Vars{
"version": "0.0.1",
})
err := ctx.Run(&cli.Globals)
ctx.FatalIfErrorf(err)
}