mirror of
https://github.com/strongdm/comply
synced 2024-11-05 15:35:25 +00:00
51 lines
1.0 KiB
Go
51 lines
1.0 KiB
Go
// Copyright 2016 Canonical Ltd.
|
|
// Licensed under the LGPLv3, see LICENCE file for details.
|
|
|
|
package ansiterm
|
|
|
|
import (
|
|
"fmt"
|
|
"sort"
|
|
"strings"
|
|
)
|
|
|
|
type attribute int
|
|
|
|
const (
|
|
unknownAttribute attribute = -1
|
|
reset attribute = 0
|
|
)
|
|
|
|
// sgr returns the escape sequence for the Select Graphic Rendition
|
|
// for the attribute.
|
|
func (a attribute) sgr() string {
|
|
if a < 0 {
|
|
return ""
|
|
}
|
|
return fmt.Sprintf("\x1b[%dm", a)
|
|
}
|
|
|
|
type attributes []attribute
|
|
|
|
func (a attributes) Len() int { return len(a) }
|
|
func (a attributes) Less(i, j int) bool { return a[i] < a[j] }
|
|
func (a attributes) Swap(i, j int) { a[i], a[j] = a[j], a[i] }
|
|
|
|
// sgr returns the combined escape sequence for the Select Graphic Rendition
|
|
// for the sequence of attributes.
|
|
func (a attributes) sgr() string {
|
|
switch len(a) {
|
|
case 0:
|
|
return ""
|
|
case 1:
|
|
return a[0].sgr()
|
|
default:
|
|
sort.Sort(a)
|
|
var values []string
|
|
for _, attr := range a {
|
|
values = append(values, fmt.Sprint(attr))
|
|
}
|
|
return fmt.Sprintf("\x1b[%sm", strings.Join(values, ";"))
|
|
}
|
|
}
|