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package main
import (
"encoding/json"
pwl "github.com/justjanne/powerline-go/powerline"
"io/ioutil"
"os"
"path/filepath"
)
type DockerContextConfig struct {
CurrentContext string `json:"currentContext"`
}
func segmentDockerContext(p *powerline) []pwl.Segment {
context := "default"
home, _ := os.LookupEnv("HOME")
contextFolder := filepath.Join(home, ".docker", "contexts")
configFile := filepath.Join(home, ".docker", "config.json")
contextEnvVar := os.Getenv("DOCKER_CONTEXT")
if contextEnvVar != "" {
context = contextEnvVar
} else {
stat, err := os.Stat(contextFolder)
if err == nil && stat.IsDir() {
dockerConfigFile, err := ioutil.ReadFile(configFile)
if err == nil {
var dockerConfig DockerContextConfig
err = json.Unmarshal(dockerConfigFile, &dockerConfig)
if err == nil && dockerConfig.CurrentContext != "" {
context = dockerConfig.CurrentContext
}
}
}
}
// Don’t show the default context
if context == "default" {
return []pwl.Segment{}
}
return []pwl.Segment{{
Name: "docker-context",
Content: "🐳" + context,
Foreground: p.theme.PlEnvFg,
Background: p.theme.PlEnvBg,
}}
}
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