bin/prompt.go
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package main
import (
"fmt"
"os"
"os/exec"
"path/filepath"
"strings"
"time"
)
// getRepoRoot returns the full path to the root
// of the closest git dir
func getRepoRoot() string {
var rootPath string
path, err := exec.Command("git", "rev-parse", "--show-toplevel").Output()
if err != nil {
rootPath = "~"
} else {
rootPath = strings.TrimSpace(string(path))
}
return rootPath
}
func resolveEmoji(hostname string) string {
emoji := "💀"
if hostname == "zora" {
emoji = "🍣"
} else if hostname == "nostromo" {
emoji = "🛸"
}
return emoji
}
func main() {
cwd, _ := os.Getwd()
host, _ := os.Hostname()
home := os.Getenv("HOME")
now := time.Now().Format("15:04:05")
emoji := resolveEmoji(host)
fmt.Printf("%s %s ", now, emoji)
gitRoot := getRepoRoot()
var prefix string
if gitRoot == home {
prefix = "~"
} else {
prefix = filepath.Base(gitRoot)
}
suffix := cwd[len(gitRoot):]
fmt.Printf("%s", prefix)
var parts []string
parts = strings.Split(suffix, "/")
for i, part := range parts {
if i == len(parts)-1 {
fmt.Printf("%s", part)
} else {
if len(part) != 0 {
fmt.Printf("%c/", part[0])
} else {
fmt.Printf("/")
}
}
}
}