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package aec
import (
"fmt"
"strings"
)
const esc = "\x1b["
// Reset resets SGR effect.
const Reset string = "\x1b[0m"
var empty = newAnsi("")
// ANSI represents ANSI escape code.
type ANSI interface {
fmt.Stringer
// With adapts given ANSIs.
With(...ANSI) ANSI
// Apply wraps given string in ANSI.
Apply(string) string
}
type ansiImpl string
func newAnsi(s string) *ansiImpl {
r := ansiImpl(s)
return &r
}
func (a *ansiImpl) With(ansi ...ANSI) ANSI {
return concat(append([]ANSI{a}, ansi...))
}
func (a *ansiImpl) Apply(s string) string {
return a.String() + s + Reset
}
func (a *ansiImpl) String() string {
return string(*a)
}
// Apply wraps given string in ANSIs.
func Apply(s string, ansi ...ANSI) string {
if len(ansi) == 0 {
return s
}
return concat(ansi).Apply(s)
}
func concat(ansi []ANSI) ANSI {
strs := make([]string, 0, len(ansi))
for _, p := range ansi {
strs = append(strs, p.String())
}
return newAnsi(strings.Join(strs, ""))
}
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