46 lines
835 B
Go
46 lines
835 B
Go
//go:build !windows
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// +build !windows
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package fs
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import (
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"fmt"
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"os"
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"os/exec"
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"path/filepath"
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)
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func lookupDirs(extraDirs []string) []string {
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pathVar := os.Getenv("PATH")
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dirs := filepath.SplitList(pathVar)
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for _, ep := range extraDirs {
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dirs = append(dirs, ep)
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}
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return dirs
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}
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func findFile(dirs []string, file string, f fileCheckFunc) (string, error) {
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for _, dir := range dirs {
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if dir == "" {
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// Unix shell semantics: path element "" means "."
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dir = "."
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}
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path := filepath.Join(dir, file)
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if err := f(path); err == nil {
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return path, nil
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}
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}
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return "", fmt.Errorf("%s: %w", file, exec.ErrNotFound)
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}
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func checkExecutable(file string) error {
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d, err := os.Stat(file)
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if err != nil {
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return err
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}
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if m := d.Mode(); !m.IsDir() && m&0111 != 0 {
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return nil
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}
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return os.ErrPermission
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}
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