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
|
//go:build windows
package util
import (
"fmt"
"os"
"os/exec"
"path/filepath"
"regexp"
"strings"
"sync/atomic"
"syscall"
)
type shellType int
const (
shellTypeUnknown shellType = iota
shellTypeCmd
shellTypePowerShell
)
type Executor struct {
shell string
shellType shellType
args []string
shellPath atomic.Value
r *regexp.Regexp
}
func NewExecutor(withShell string) *Executor {
shell := os.Getenv("SHELL")
args := strings.Fields(withShell)
if len(args) > 0 {
shell = args[0]
} else if len(shell) == 0 {
shell = "cmd"
}
var r *regexp.Regexp
shellType := shellTypeUnknown
basename := filepath.Base(shell)
if len(args) > 0 {
args = args[1:]
} else if strings.HasPrefix(basename, "cmd") {
shellType = shellTypeCmd
args = []string{"/v:on/s/c"}
r = regexp.MustCompile(`[&|<>()@^%!]`)
} else if strings.HasPrefix(basename, "pwsh") || strings.HasPrefix(basename, "powershell") {
shellType = shellTypePowerShell
args = []string{"-NoProfile", "-Command"}
} else {
args = []string{"-c"}
}
return &Executor{shell: shell, shellType: shellType, args: args, r: r}
}
// ExecCommand executes the given command with $SHELL
// FIXME: setpgid is unused. We set it in the Unix implementation so that we
// can kill preview process with its child processes at once.
// NOTE: For "powershell", we should ideally set output encoding to UTF8,
// but it is left as is now because no adverse effect has been observed.
func (x *Executor) ExecCommand(command string, setpgid bool) *exec.Cmd {
shell := x.shell
if cached := x.shellPath.Load(); cached != nil {
shell = cached.(string)
} else {
if strings.Contains(shell, "/") {
out, err := exec.Command("cygpath", "-w", shell).Output()
if err == nil {
shell = strings.Trim(string(out), "\n")
}
}
x.shellPath.Store(shell)
}
var cmd *exec.Cmd
if x.shellType == shellTypeCmd {
cmd = exec.Command(shell)
cmd.SysProcAttr = &syscall.SysProcAttr{
HideWindow: false,
CmdLine: fmt.Sprintf(`%s "%s"`, strings.Join(x.args, " "), command),
CreationFlags: 0,
}
} else {
cmd = exec.Command(shell, append(x.args, command)...)
cmd.SysProcAttr = &syscall.SysProcAttr{
HideWindow: false,
CreationFlags: 0,
}
}
return cmd
}
func (x *Executor) Become(stdin *os.File, environ []string, command string) {
cmd := x.ExecCommand(command, false)
cmd.Stdin = stdin
cmd.Stdout = os.Stdout
cmd.Stderr = os.Stderr
cmd.Env = environ
err := cmd.Start()
if err != nil {
fmt.Fprintf(os.Stderr, "fzf (become): %s\n", err.Error())
Exit(127)
}
err = cmd.Wait()
if err != nil {
if exitError, ok := err.(*exec.ExitError); ok {
Exit(exitError.ExitCode())
}
}
Exit(0)
}
func (x *Executor) QuoteEntry(entry string) string {
switch x.shellType {
case shellTypeCmd:
/* Manually tested with the following commands:
fzf --preview "echo {}"
fzf --preview "type {}"
echo .git\refs\| fzf --preview "dir {}"
echo .git\refs\\| fzf --preview "dir {}"
echo .git\refs\\\| fzf --preview "dir {}"
reg query HKCU | fzf --reverse --bind "enter:reload(reg query {})"
fzf --disabled --preview "echo {q}" --query "&|<>()@^^%!"
fd -H --no-ignore -td -d 4 | fzf --preview "dir {}"
fd -H --no-ignore -td -d 4 | fzf --preview "eza {}" --preview-window up
fd -H --no-ignore -td -d 4 | fzf --preview "eza --color=always --tree --level=3 --icons=always {}"
fd -H --no-ignore -td -d 4 | fzf --preview ".\eza.exe --color=always --tree --level=3 --icons=always {}" --with-shell "powershell -NoProfile -Command"
*/
escaped := syscall.EscapeArg(entry)
return x.r.ReplaceAllStringFunc(escaped, func(match string) string {
return "^" + match
})
case shellTypePowerShell:
escaped := strings.Replace(entry, `"`, `\"`, -1)
return "'" + strings.Replace(escaped, "'", "''", -1) + "'"
default:
return "'" + strings.Replace(entry, "'", "'\\''", -1) + "'"
}
}
// KillCommand kills the process for the given command
func KillCommand(cmd *exec.Cmd) error {
return cmd.Process.Kill()
}
// IsWindows returns true on Windows
func IsWindows() bool {
return true
}
// SetNonblock executes syscall.SetNonblock on file descriptor
func SetNonblock(file *os.File, nonblock bool) {
syscall.SetNonblock(syscall.Handle(file.Fd()), nonblock)
}
// Read executes syscall.Read on file descriptor
func Read(fd int, b []byte) (int, error) {
return syscall.Read(syscall.Handle(fd), b)
}
func SetStdin(file *os.File) {
// No-op
}
|