nobufio

func GetTerminalFD ¶

func GetTerminalFD(stream any) (fd int, ok bool)

GetTerminalFD returns the file descriptor of the terminal represented by the given stream. If stream does not represent a terminal, returns (0, false).

func IsTerminal ¶

func IsTerminal(stream any) bool

IsTerminal checks if stream refers to a file descriptor that is a UNIX-like terminal. A refers to a file descriptor if it is of type *os.File.

func ReadLine ¶

func ReadLine(reader io.Reader) (value string, err error)

ReadLine reads the current line from the provided reader. It does not use a buffer, and does not read beyond the end of line marker.

A line is considered to end when one of the following is encountered: '\r\n', '\n' or EOF or '\r' followed by EOF. Note that only a '\r' alone is not considered an end-of-line.

The returned line never contains the end-of-line markers, such as '\n' or '\r\n'. A line may be empty, however when only EOF is read, returns "", EOF.

input := strings.NewReader("line1\nline2\r\n\n\r\nline5")

fmt.Println(ReadLine(input))
fmt.Println(ReadLine(input))
fmt.Println(ReadLine(input))
fmt.Println(ReadLine(input))
fmt.Println(ReadLine(input))
fmt.Println(ReadLine(input))

Output:

line1 <nil>
line2 <nil>
 <nil>
 <nil>
line5 <nil>
 EOF

func ReadPassword ¶

func ReadPassword(reader io.Reader) (value string, err error)

ReadPassword is like ReadLine, except that it turns off terminal echo. When reader is not a terminal, behaves like ReadLine

func ReadPasswordStrict ¶

func ReadPasswordStrict(reader io.Reader) (value string, err error)

ReadPasswordStrict is like ReadPassword, except that when reader is not a terminal, returns ErrNoTerminal.

func ReadRune ¶

func ReadRune(reader io.Reader) (r rune, size int, err error)

ReadRune reads the next rune from r. It does not read from reader beyond the rune.

It returns the rune being read, and its' size in bytes. If no rune can be read, it returns an error.

See io.RuneReader.