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