util

func FileExists ¶

func FileExists(filename string) bool

FileExists checks if a file exists and is not a directory before we try using it to prevent further errors.

func IsForegroundProcess ¶ added in v0.0.62

func IsForegroundProcess(fd uintptr) bool

IsForegroundProcess reports whether this process belongs to the foreground process group of the terminal referred to by fd. Reading or reconfiguring a terminal from a background process group suspends the process with SIGTTIN/SIGTTOU — e.g. inside process substitution: `source <(lets completion -s zsh)`.

func IsTerminalWriter ¶ added in v0.0.62

func IsTerminalWriter(w io.Writer) bool

IsTerminalWriter reports whether w is connected to an interactive terminal. Writers that are not backed by a file descriptor (e.g. buffers used in tests, or pipes) are treated as non-terminals.

func LetsUserDir ¶

func LetsUserDir() (string, error)

func LetsUserFile ¶

func LetsUserFile(name string) (string, error)

func OpenEditor ¶ added in v0.0.62

func OpenEditor(path string) error

func OpenURL ¶

func OpenURL(url string) error

func ParseVersion ¶

func ParseVersion(version string) (*semver.Version, error)

func SafeCreateDir ¶

func SafeCreateDir(dirPath string) error

func WriteFileAtomic ¶ added in v0.0.62

func WriteFileAtomic(dst string, data []byte) error

WriteFileAtomic writes data to dst via a sibling temp file and an os.Rename, so dst is never left in a partially-written state if the process is interrupted. The resulting file has 0o644 permissions.