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defaults.go
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/
defaults.go
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package prompt
import (
"os"
"os/user"
"github.com/u-root/u-root/cmds/elvish/edit/ui"
"github.com/u-root/u-root/cmds/elvish/eval"
"github.com/u-root/u-root/cmds/elvish/util"
)
var defaultPrompt, defaultRPrompt, defaultStaleTransform eval.Callable
func init() {
user, err := user.Current()
isRoot := err == nil && user.Uid == "0"
prompt := func(fm *eval.Frame) {
out := fm.OutputChan()
out <- string(util.Getwd())
if isRoot {
out <- &ui.Styled{"# ", ui.Styles{"red"}}
} else {
out <- &ui.Styled{"> ", ui.Styles{}}
}
}
defaultPrompt = eval.NewBuiltinFn("default prompt", prompt)
}
func init() {
username := "???"
user, err := user.Current()
if err == nil {
username = user.Username
}
hostname, err := os.Hostname()
if err != nil {
hostname = "???"
}
rpromptStr := username + "@" + hostname
rprompt := func(fm *eval.Frame) {
out := fm.OutputChan()
out <- &ui.Styled{rpromptStr, ui.Styles{"inverse"}}
}
defaultRPrompt = eval.NewBuiltinFn("default rprompt", rprompt)
}
func init() {
staleTransform := func(fm *eval.Frame) {
out := fm.OutputChan()
fm.IterateInputs(func(i interface{}) {
s := i.(*ui.Styled)
out <- &ui.Styled{s.Text, ui.Styles{"inverse"}}
})
}
defaultStaleTransform = eval.NewBuiltinFn("default stale transform", staleTransform)
}