package speakeasy
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import (
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"fmt"
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"io"
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"os"
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"strings"
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)
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// Ask the user to enter a password with input hidden. prompt is a string to
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// display before the user's input. Returns the provided password, or an error
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// if the command failed.
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func Ask(prompt string) (password string, err error) {
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return FAsk(os.Stdout, prompt)
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}
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// FAsk is the same as Ask, except it is possible to specify the file to write
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// the prompt to. If 'nil' is passed as the writer, no prompt will be written.
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func FAsk(wr io.Writer, prompt string) (password string, err error) {
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if wr != nil && prompt != "" {
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fmt.Fprint(wr, prompt) // Display the prompt.
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}
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password, err = getPassword()
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// Carriage return after the user input.
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if wr != nil {
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fmt.Fprintln(wr, "")
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}
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return
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}
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func readline() (value string, err error) {
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var valb []byte
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var n int
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b := make([]byte, 1)
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for {
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// read one byte at a time so we don't accidentally read extra bytes
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n, err = os.Stdin.Read(b)
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if err != nil && err != io.EOF {
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return "", err
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}
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if n == 0 || b[0] == '\n' {
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break
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}
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valb = append(valb, b[0])
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}
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return strings.TrimSuffix(string(valb), "\r"), nil
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}
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