/
segment-root.go
61 lines (54 loc) · 1.74 KB
/
segment-root.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
// Copyright 2016-2018, psh project Authors.
//
// Licensed to the Apache Software Foundation (ASF) under one or more
// contributor license agreements. See the NOTICE file distributed with this
// work for additional information regarding copyright ownership. The ASF
// licenses this file to you under the Apache License, Version 2.0 (the
// "License"); you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
// License for the specific language governing permissions and limitations
// under the License.
package psh
import (
"bytes"
"fmt"
)
const (
// SegmentRootBackground is the background color to use
SegmentRootBackground = 236 // #303030
)
// SegmentRoot implements the root partial of the prompt.
//
// It renders the special character string "\$".
// In bash this results to character '#' if the effective UID is 0,
// otherwise '$'.
//
// TODO:
// * Change background color if the last command exit status != 0
type SegmentRoot struct {
Data []byte
}
// NewSegmentRoot creates an instace of SegmentRoot type.
func NewSegmentRoot() *SegmentRoot {
segment := &SegmentRoot{}
return segment
}
// Compile collects the data for this segment.
func (s *SegmentRoot) Compile() {
s.Data = []byte("\\$")
}
// Render renders the segment results.
func (s *SegmentRoot) Render() []byte {
var b bytes.Buffer
b.Write(SetBackground(SegmentRootBackground))
fmt.Fprint(&b, " ")
b.Write(s.Data)
fmt.Fprint(&b, " ")
return b.Bytes()
}