50 lines
1018 B
Go
50 lines
1018 B
Go
// License: GPLv3 Copyright: 2023, Kovid Goyal, <kovid at kovidgoyal.net>
|
|
|
|
package utils
|
|
|
|
import (
|
|
"fmt"
|
|
"os"
|
|
"path/filepath"
|
|
"strings"
|
|
|
|
"golang.org/x/sys/unix"
|
|
)
|
|
|
|
var _ = fmt.Print
|
|
|
|
var DefaultExeSearchPaths = (&Once[[]string]{Run: func() []string {
|
|
candidates := [...]string{"/usr/local/bin", "/opt/bin", "/opt/homebrew/bin", "/usr/bin", "/bin", "/usr/sbin", "/sbin"}
|
|
ans := make([]string, 0, len(candidates))
|
|
for _, x := range candidates {
|
|
if s, err := os.Stat(x); err == nil && s.IsDir() {
|
|
ans = append(ans, x)
|
|
}
|
|
}
|
|
return ans
|
|
}}).Get
|
|
|
|
func Which(cmd string, paths ...string) string {
|
|
if strings.Contains(cmd, string(os.PathSeparator)) {
|
|
return ""
|
|
}
|
|
if len(paths) == 0 {
|
|
path := os.Getenv("PATH")
|
|
if path == "" {
|
|
return ""
|
|
}
|
|
paths = strings.Split(path, string(os.PathListSeparator))
|
|
}
|
|
for _, dir := range paths {
|
|
q := filepath.Join(dir, cmd)
|
|
if unix.Access(q, unix.X_OK) == nil {
|
|
s, err := os.Stat(q)
|
|
if err == nil && !s.IsDir() {
|
|
return q
|
|
}
|
|
}
|
|
|
|
}
|
|
return ""
|
|
}
|