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
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
|
package mpb
import (
"bytes"
"io"
"github.com/vbauerster/mpb/v5/decor"
)
// BarOption is a function option which changes the default behavior of a bar.
type BarOption func(*bState)
func (s *bState) addDecorators(dest *[]decor.Decorator, decorators ...decor.Decorator) {
type mergeWrapper interface {
MergeUnwrap() []decor.Decorator
}
for _, decorator := range decorators {
if mw, ok := decorator.(mergeWrapper); ok {
*dest = append(*dest, mw.MergeUnwrap()...)
}
*dest = append(*dest, decorator)
}
}
// AppendDecorators let you inject decorators to the bar's right side.
func AppendDecorators(decorators ...decor.Decorator) BarOption {
return func(s *bState) {
s.addDecorators(&s.aDecorators, decorators...)
}
}
// PrependDecorators let you inject decorators to the bar's left side.
func PrependDecorators(decorators ...decor.Decorator) BarOption {
return func(s *bState) {
s.addDecorators(&s.pDecorators, decorators...)
}
}
// BarID sets bar id.
func BarID(id int) BarOption {
return func(s *bState) {
s.id = id
}
}
// BarWidth sets bar width independent of the container.
func BarWidth(width int) BarOption {
return func(s *bState) {
s.reqWidth = width
}
}
// BarQueueAfter queues this (being constructed) bar to relplace
// runningBar after it has been completed.
func BarQueueAfter(runningBar *Bar) BarOption {
if runningBar == nil {
return nil
}
return func(s *bState) {
s.runningBar = runningBar
}
}
// BarRemoveOnComplete removes both bar's filler and its decorators
// on complete event.
func BarRemoveOnComplete() BarOption {
return func(s *bState) {
s.dropOnComplete = true
}
}
// BarFillerClearOnComplete clears bar's filler on complete event.
// It's shortcut for BarFillerOnComplete("").
func BarFillerClearOnComplete() BarOption {
return BarFillerOnComplete("")
}
// BarFillerOnComplete replaces bar's filler with message, on complete event.
func BarFillerOnComplete(message string) BarOption {
return BarFillerMiddleware(func(base BarFiller) BarFiller {
return BarFillerFunc(func(w io.Writer, reqWidth int, st decor.Statistics) {
if st.Completed {
io.WriteString(w, message)
} else {
base.Fill(w, reqWidth, st)
}
})
})
}
// BarFillerMiddleware provides a way to augment default BarFiller.
func BarFillerMiddleware(middle func(BarFiller) BarFiller) BarOption {
return func(s *bState) {
s.middleware = middle
}
}
// BarPriority sets bar's priority. Zero is highest priority, i.e. bar
// will be on top. If `BarReplaceOnComplete` option is supplied, this
// option is ignored.
func BarPriority(priority int) BarOption {
return func(s *bState) {
s.priority = priority
}
}
// BarExtender is an option to extend bar to the next new line, with
// arbitrary output.
func BarExtender(filler BarFiller) BarOption {
if filler == nil {
return nil
}
return func(s *bState) {
s.extender = makeExtFunc(filler)
}
}
func makeExtFunc(filler BarFiller) extFunc {
buf := new(bytes.Buffer)
return func(r io.Reader, reqWidth int, st decor.Statistics) (io.Reader, int) {
filler.Fill(buf, reqWidth, st)
return io.MultiReader(r, buf), bytes.Count(buf.Bytes(), []byte("\n"))
}
}
// TrimSpace trims bar's edge spaces.
func TrimSpace() BarOption {
return func(s *bState) {
s.trimSpace = true
}
}
// BarStyle overrides mpb.DefaultBarStyle which is "[=>-]<+".
// It's ok to pass string containing just 5 runes, for example "╢▌▌░╟",
// if you don't need to override '<' (reverse tip) and '+' (refill rune).
func BarStyle(style string) BarOption {
if style == "" {
return nil
}
type styleSetter interface {
SetStyle(string)
}
return func(s *bState) {
if t, ok := s.filler.(styleSetter); ok {
t.SetStyle(style)
}
}
}
// BarNoPop disables bar pop out of container. Effective when
// PopCompletedMode of container is enabled.
func BarNoPop() BarOption {
return func(s *bState) {
s.noPop = true
}
}
// BarReverse reverse mode, bar will progress from right to left.
func BarReverse() BarOption {
type revSetter interface {
SetReverse(bool)
}
return func(s *bState) {
if t, ok := s.filler.(revSetter); ok {
t.SetReverse(true)
}
}
}
// SpinnerStyle sets custom spinner style.
// Effective when Filler type is spinner.
func SpinnerStyle(frames []string) BarOption {
if len(frames) == 0 {
return nil
}
chk := func(filler BarFiller) (interface{}, bool) {
t, ok := filler.(*spinnerFiller)
return t, ok
}
cb := func(t interface{}) {
t.(*spinnerFiller).frames = frames
}
return MakeFillerTypeSpecificBarOption(chk, cb)
}
// MakeFillerTypeSpecificBarOption makes BarOption specific to Filler's
// actual type. If you implement your own Filler, so most probably
// you'll need this. See BarStyle or SpinnerStyle for example.
func MakeFillerTypeSpecificBarOption(
typeChecker func(BarFiller) (interface{}, bool),
cb func(interface{}),
) BarOption {
return func(s *bState) {
if t, ok := typeChecker(s.filler); ok {
cb(t)
}
}
}
// BarOptOn returns option when condition evaluates to true.
func BarOptOn(option BarOption, condition func() bool) BarOption {
if condition() {
return option
}
return nil
}
|
