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
|
//go:build !windows
// +build !windows
package oscommands
import (
"bufio"
"bytes"
"strings"
"unicode/utf8"
"github.com/go-errors/errors"
"github.com/jesseduffield/lazygit/pkg/utils"
"github.com/creack/pty"
)
// RunCommandWithOutputLiveWrapper runs a command and return every word that gets written in stdout
// Output is a function that executes by every word that gets read by bufio
// As return of output you need to give a string that will be written to stdin
// NOTE: If the return data is empty it won't written anything to stdin
func RunCommandWithOutputLiveWrapper(c *OSCommand, cmdObj ICmdObj, output func(string) string) error {
c.Log.WithField("command", cmdObj.ToString()).Info("RunCommand")
c.LogCommand(cmdObj.ToString(), true)
cmd := cmdObj.AddEnvVars("LANG=en_US.UTF-8", "LC_ALL=en_US.UTF-8").GetCmd()
var stderr bytes.Buffer
cmd.Stderr = &stderr
ptmx, err := pty.Start(cmd)
if err != nil {
return err
}
go utils.Safe(func() {
scanner := bufio.NewScanner(ptmx)
scanner.Split(scanWordsWithNewLines)
for scanner.Scan() {
toOutput := strings.Trim(scanner.Text(), " ")
_, _ = ptmx.WriteString(output(toOutput))
}
})
err = cmd.Wait()
ptmx.Close()
if err != nil {
return errors.New(stderr.String())
}
return nil
}
// scanWordsWithNewLines is a copy of bufio.ScanWords but this also captures new lines
// For specific comments about this function take a look at: bufio.ScanWords
func scanWordsWithNewLines(data []byte, atEOF bool) (advance int, token []byte, err error) {
start := 0
for width := 0; start < len(data); start += width {
var r rune
r, width = utf8.DecodeRune(data[start:])
if !isSpace(r) {
break
}
}
for width, i := 0, start; i < len(data); i += width {
var r rune
r, width = utf8.DecodeRune(data[i:])
if isSpace(r) {
return i + width, data[start:i], nil
}
}
if atEOF && len(data) > start {
return len(data), data[start:], nil
}
return start, nil, nil
}
// isSpace is also copied from the bufio package and has been modified to also captures new lines
// For specific comments about this function take a look at: bufio.isSpace
func isSpace(r rune) bool {
if r <= '\u00FF' {
switch r {
case ' ', '\t', '\v', '\f':
return true
case '\u0085', '\u00A0':
return true
}
return false
}
if '\u2000' <= r && r <= '\u200a' {
return true
}
switch r {
case '\u1680', '\u2028', '\u2029', '\u202f', '\u205f', '\u3000':
return true
}
return false
}
|
